CN107605793B - Vertical shaft pump - Google Patents
Vertical shaft pump Download PDFInfo
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- CN107605793B CN107605793B CN201710922716.0A CN201710922716A CN107605793B CN 107605793 B CN107605793 B CN 107605793B CN 201710922716 A CN201710922716 A CN 201710922716A CN 107605793 B CN107605793 B CN 107605793B
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- bearing
- sliding
- sliding bearing
- vertical shaft
- sleeve
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/0465—Ceramic bearing designs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/047—Bearings hydrostatic; hydrodynamic
- F04D29/0476—Bearings hydrostatic; hydrodynamic for axial pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/02—Sliding-contact bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sliding-Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The present invention vibrates with not losing wear resistance during dry operation and caused by also preventing from because of the destabilization power based on the generations such as frictional force and/or liquid film in the draining operating comprising mud etc..Vertical shaft pump of the invention has metal sleeve (11) in the periphery of rotary shaft (10 (10 ')).The 1st sliding bearing (1) is equipped in the peripheral side of sleeve (11).In addition, being equipped with the 2nd sliding bearing (9) on the outer peripheral surface of the 1st cartridge housing (12).Sleeve shell (15) are fixed on rotary shaft (10 (10 ')).Sleeve (14) are equipped on the inner peripheral surface of sleeve shell (15).
Description
The present patent application be international filing date be on July 24th, 2014, international application no PCT/JP2014/069555,
National application number into National Phase in China is the application for a patent for invention of 201480041832.6, entitled " vertical shaft pump "
Divisional application.
Technical field
The present invention relates to the vertical shaft pumps with sliding bearing, more particularly in advance standby operating pump or in dry conditions into
Pump of row management operating etc., the vertical shaft pump for carrying out operating and draining (water delivery) operating in air.
Background technique
In recent years, due to the development of urbanization, and the reduction in greenery patches and the concrete on road surface and pitch have been deepened
Expansion, thereby produce city hot island phenomenon, the concentration of local heavy rain of referred to as so-called guerrilla warfare heavy rain takes place frequently in urban district.Part
A large amount of rainfall concrete, pitch road surface on, be not absorbed into underground and be directly directed in water channel.Its
It as a result is that a large amount of rainwater is flowed into drainage pumping plant in a short time.
In order to guard against the Quick drainage of the concentrated heavy rainfall as take place frequently the due to a large amount of rainwater of bring, it is being set to draining
In the draining pump of pumping plant, the leading standby operating pre-actuated before rainwater reaches drainage pumping plant is carried out, to avoid producing
It is raw to be lost because soaking caused by start delay.
Fig. 1 is the local skeleton diagram for carrying out the vertical shaft pump of standby operating in advance.It is configured in the sink 100 of drainage pumping plant
Vertical shaft pump 3, vertical shaft pump 3 has impeller 22 in the front end of the axis configured along longitudinal direction, even if due to sucking air together with water
The water level of sink 100 is caused to be that minimum operating water level LWL or less also can continue to operating (leading standby operating) to impeller 22.
In vertical shaft pump 3, through hole 5 is equipped in the side surface part of the water suction bell housing (bell) 27 of 22 entrance side of impeller, and at this
Air hose 6 with the opening 6a contacted with outside air is installed on through hole 5.Make in vertical shaft pump 3 via passing through as a result,
The supply amount for the air that perforation 5 is supplied into vertical shaft pump 3 changes according to water level, to control in minimum operating water level LWL or less
The displacement of vertical shaft pump 3 processed.
Fig. 2 is the figure for illustrating the operating condition of standby operating in advance.Such as used as metropolitan rain-water drainage, with sucking
Water level is unrelated but pre-actuates vertical shaft pump (A: operating in air) based on rainfall data etc..As water level is from the state of low water level
Rise, water level reaches the position of impeller, and vertical shaft pump is from idle running (operating in air) via the operating (B: gas for stirring water by impeller
Water stirring operating), further via while sucking the air supplied from through hole together with water gradually increase water
Operating (C: mixing wastewater with air operating), operates (D: quiet rum) transition to the standard-sized sheet for the discharge for absolutely carrying out water.In addition,
When water level is reduced from high water level, sucked together with water on one side gradually from standard-sized sheet fortune turn away by the air supplied from through hole
Reduce operating (C: mixing wastewater with air operating) transition of water.Water level reach LLWL near when, to do not suck water also without row
Operating (E: gas-tight (air lock) operating) transition of water.By the collectively referred to as standby operating in advance of the operating with this five features.
In addition, pump startup is since the water level LLLWL lower than shell lower end.
Fig. 3 is to indicate the vertical shaft pump 3 whole cross-sectional view shown in FIG. 1 for carrying out standby operating in advance.In addition, shown in Fig. 2
Through hole 5 and air hose 6 be omitted diagram.As shown in figure 3, vertical shaft pump 3 includes the row being fixed on pump setting table top
Elbow 30 out；The shell 29 being connect with the lower end of the discharge elbow 30；It is connect with the lower end of shell 29 and is accommodated in impeller 22
Internal discharge bowl-shaped portion (bowl) 28；With the water suction bell-jar for connecting with the lower end that bowl-shaped portion 28 is discharged and be used to suck water
27。
It is configured on the diametrically substantially central part of the shell 29 of vertical shaft pump 3, discharge bowl-shaped portion 28 and the bell-jar 27 that absorbs water
Pass through the rotary shaft 10,10 ' interconnected of shaft coupling 26.Rotary shaft 10,10 ' via bearing part by being fixed on shell 29
Upper bearing 32 and via bearing part be fixed on discharge bowl-shaped portion 28 on lower bearing 33 support.Rotary shaft 10,
10 ' one end (water suction 27 side of bell-jar) is connected with the impeller 22 for being drawn into water in pump.Rotary shaft 10,10 ' it is another
One end leads to the outside of vertical shaft pump 3 from the hole being located on discharge elbow 30, and with make what impeller 22 rotated (not shown) starting
The connection of the driving machines such as machine or motor.
Floating seal, gland packing are equipped between rotary shaft 10,10 ' and the hole being located on discharge elbow 30
Thus the shaft seals 34 such as (gland packing) or mechanical sealing member prevent water handled by vertical shaft pump 3 from flowing out to vertical shaft pump
3 outside.
Driving machine is located on the ground to be easy to carry out maintenance inspection.The rotation of driving machine be transmitted to rotary shaft 10,
10 ', so as to rotate impeller 22.Water is sucked by the rotation of impeller 22 from water suction bell-jar 27, and from discharge bowl
Shape portion 28, shell 29 pass through to be discharged from discharge elbow 30.
Fig. 4 is the enlarged drawing of the previous bearing arrangement suitable for bearing 32,33 shown in Fig. 3, and Fig. 5 is sliding bearing
Perspective view.As shown in figure 4, previous bearing arrangement has the metal being made of stainless steel etc. in the periphery of rotary shaft 10 (10 ')
The sleeve 11 of system.In the peripheral side of sleeve 11, equipped with shown in fig. 5, hollow cylinder by resin material, ceramics, sintering metal
Or the sliding bearing 1 that the modified metal in surface is constituted is carried out.Inner peripheral surface (the sliding of the outer peripheral surface and sliding bearing 1 of sleeve 11
Face) it is opposite across very narrow clearance, and constituted in a manner of being slided relative to sliding bearing 1.Sliding bearing 1 by by
Metal or the cartridge housing 12 of resin composition are simultaneously fixed on via flange part 12a to connections such as the shells 29 (referring to Fig. 3) of pump
On bearing part 13.
Vertical shaft pump 3 shown in Fig. 3 operates in air in pump startup.That is, bearing 32,33 is in the profit for being not based on liquid
It is operated under sliding drying condition.The environment for referring to the bearing 32,33 in pump operating in this drying condition is to be not based on liquid
Condition in the air of lubrication, and dry operating refers to operating under this condition.In addition, bearing 32,33 shown in Fig. 3 also exists
It is operated under to the drainage condition of bearing water delivery.Here, drainage condition refers to that the environment of the bearing 32,33 in pump operating is to be mixed into
There is the condition in the water of the foreign matters such as sand (mud), and drain the operating for operating and referring under this condition, such as refers to that air water is mixed
Close operating, standard-sized sheet operating etc., gas-tight operating etc..Due to using bearing 32,33 in such a situa-tion, so in bearing 32,33
It is middle that there are following technical tasks.
Although using various materials for sliding bearing 1, the case where the vertical shaft that operating is dried pumps 3
Under, from the viewpoint of reliability when operating from dry sliding property and draining, resin or bearing made of ceramics are used mostly.At this
In the case of, sliding bearing 1 is required as follows: frictional heating when dry operating can be born, and can resisted when draining operates
Because being worn caused by the mud in water.But the most contradiction of the two characteristics, the high bearing material of usual wear resistance have
The high tendency of coefficient of friction.Bearing material is selected if wear resistance when therefore operating draining is preferential, under drying condition
Frictional heating increase, if being arranged to inhibit frictional heating under drying condition and the low bearing material of selected coefficient of friction
The abrasion loss of the bearing material generated by mud when water transport turns increases.
In addition, to sliding bearing 1 and the padded coaming being configured between sliding bearing 1 and cartridge housing 12 using resin or
In the case where the high molecular materials such as rubber, due to having by material and the upper limit of the usable temperature of determination, so because friction produces
Raw fever limit is determined by the property of these materials.
In the sliding bearing 1 with characteristic described above, if managerial and mention in order to improve the maintenance of sliding bearing 1
The wear resistance of high sliding bearing 1, then the coefficient of friction of bearing sliding surface increases.Due to the bearing sliding surface friction and have can
Vibration described below can be generated.
In general, there are following situations: by because rotary body itself is had when operating rotating machinery as vertical shaft pump 3
Imbalance and/or the fluid load of some weight and to rotary body force generate exciting force and lead to rotating machinery vibrating.But
Be, as the vibration cause of other rotating machineries, have due to the whirling of rotary body with the direction of displacement (diameter of rotary body
To) power that generates on orthogonal direction (circumferential direction of rotary body).The power is referred to as destabilization power, has the resistance for eliminating rotary body
The effectiveness of Buddhist nun's effect.As a result, existing and drawing when causing the damping action of rotary body entirety to become negative because of destabilization power
The case where playing diverging vibration (whirling is gradually increased such vibration).
Here, vertical shaft pump 3 starting when etc. air in operating in, in water operate compared with due to not moistening in bearing portion
Slip-stream body, so the coefficient of friction of bearing sliding surface is big.Since the frictional force becomes above-mentioned destabilization power, so using
In the case where the high bearing material of coefficient of friction, destabilization power becomes larger, to above cause and rotation side in rotary shaft 10,10 '
It is vibrated to the diverging of oppositely whirling.In addition, in the case where generating such diverging vibration during dry operation, because of vibration
And the surface pressing of bearing is caused to increase, so that the frictional force generated in bearing sliding surface becomes very big.Therefore, it is possible to by
Bearing is caused to fall into dysfunction in the thermal expansion caused by bearing temperature steeply rises or sintering due to.
On the other hand, in the draining operating of vertical shaft pump 3, liquid film is formed on the sliding surface of sliding bearing 1.Due to this
Liquid film and generate destabilization power, thus exist generate larger vibration the case where.The phenomenon with in the sliding by oil lubrication
The phenomenon that being referred to as oil whip (oil whip) or oil whirl (oil whirl) in bearing, identical mechanism occurred.Work as hair
When the raw phenomenon, rotary shaft 10,10 ' is intensely vibrated, and can not operate normally.
These are vibrated in order to prevent, the rotary shaft for needing to seek the reduction of destabilization power or being paid plus being generated based on damping
10, the raising of 10 ' stability.But the coefficient of friction of the reason of destabilization power when being greatly reduced as dry operating
It is difficult as described above, in addition in the configuration aspects of vertical shaft pump 3, it is difficult to assign adequately damping to rotary shaft 10,10 ' and make
With.
Like this, in carrying out the sliding bearing of the vertical shaft pump of standby operating in advance, it is desirable that wear resistance, resistance to heat generation
The performances such as (low frictional properties), vibration resistance, but be difficult at present with high level while meeting these requirements.In addition, wear resistance is high
Bearing material due to drying condition when coefficient of friction it is high, so not often being available, as a result, in the presence of can not substantially mention
The problem of high bearing life.
In addition, vertical shaft pump 3 needs more bearings according to the length of rotary shaft 10,10 '.In this case, because above-mentioned
Vibration generation so that all bearings is affected and is led to serious wear, so in shorter maintenance span time
All bearings must be just replaced in (maintenance span).
Summary of the invention
The present invention is researched and developed in view of above-mentioned conventional problems, one of its goals is to, with not losing wear resistance,
It can also reduce when dry operating and in the draining operating comprising mud etc. because of the shakiness based on the generations such as frictional force and/or liquid film
Surely it is vibrated caused by change power.
In addition, an other purposes are to reduce the frictional force for being applied to bearing sliding surface.
In addition, another other purposes are to provide a kind of mill of all sliding bearings for integrally reducing and being located on vertical shaft pump
Damage is to integrally extend the effective ways in service life.
To achieve the goals above, the vertical shaft pump of one embodiment of the present invention includes rotary part, has on outer peripheral surface
There is the 1st sliding part and there is the 2nd sliding part on inner peripheral surface, and can be rotated in water and in air；1st sliding bearing,
Pass through above-mentioned 1st sliding part of inner circumferential surface bearing；With the 2nd sliding bearing, pass through above-mentioned 2nd sliding part of periphery surface bearing.
Vertical shaft about other modes of the invention pumps, and the 1st sliding bearing is with can be under drying condition and drainage condition
The mode for supporting above-mentioned 1st sliding part is constituted, and above-mentioned 2nd sliding bearing is with can be on drying condition and drainage condition lower support
The mode for stating the 2nd sliding part is constituted.
Vertical shaft about other modes of the invention pumps, the diameter between above-mentioned 1st sliding part and above-mentioned 1st sliding bearing
The size in gap is 1/1000 or more, the 1/100 of the internal diameter of above-mentioned 1st sliding bearing hereinafter, above-mentioned 2nd sliding part and above-mentioned the
The size of diametric clearance between 2 sliding bearings is 1/1000 or more, the 1/100 or less of the outer diameter of above-mentioned 2nd sliding bearing.
In addition, the size of the diametric clearance between above-mentioned 1st sliding part and above-mentioned 1st sliding bearing refers to the 1st sliding axle
The difference of the outer diameter of the internal diameter and the 1st sliding part that hold, diametric clearance between above-mentioned 2nd sliding part and above-mentioned 2nd sliding bearing
Size refers to the difference of the internal diameter of the 2nd sliding part and the outer diameter of the 2nd sliding bearing.
Vertical shaft about other modes of the invention pumps, the diameter between above-mentioned 2nd sliding part and above-mentioned 2nd sliding bearing
The size in gap is 0.5 relative to the ratio of the size of the diametric clearance between above-mentioned 1st sliding part and above-mentioned 1st sliding bearing
Above, 2.0 or less.
Vertical shaft about other modes of the invention pumps, the diameter between above-mentioned 2nd sliding part and above-mentioned 2nd sliding bearing
The size in gap is 0.7 relative to the ratio of the size of the diametric clearance between above-mentioned 1st sliding part and above-mentioned 1st sliding bearing
Above, 1.3 or less.
Vertical shaft about other modes of the invention pumps, and the outer diameter of above-mentioned 2nd sliding bearing is relative to above-mentioned 1st sliding axle
The ratio of the internal diameter held is 0.2 or more, 2.0 or less.
Vertical shaft about other modes of the invention pumps, and the bearing for the part of above-mentioned rotary part being in water is only by upper
Sliding bearing is stated to carry out.
Vertical shaft about other modes of the invention pumps, and above-mentioned sliding bearing includes resin material, ceramics or metal, wherein
The resin material include PA, PBI, POM, PBT, PET, PPE, PC, UHMW-PE, PTFE, PPS, PI, PEEK, PAR, PSF, PEI,
At least one of PAI, PES and PF.
Vertical shaft about other modes of the invention pumps, and above-mentioned sliding bearing includes to be added to carbon fiber, glass fibre, carbon
The resin material of at least one of particle, glass particle and graphite.
Vertical shaft about other modes of the invention pumps, and being formed with makes water to above-mentioned 1st sliding part and above-mentioned 1st sliding axle
The flow path that the gap between gap and above-mentioned 2nd sliding part and above-mentioned 2nd sliding bearing between holding passes through.
Vertical shaft about other modes of the invention pumps, and is constituted in a manner of it can be set to drainage pumping plant.
Vertical shaft about other modes of the invention pumps, and has strainer on the admission port to above-mentioned flow path water delivery.
Vertical shaft about other modes of the invention pumps, and has the cartridge housing for keeping above-mentioned sliding bearing, above-mentioned cartridge housing
Above-mentioned 1st sliding bearing is kept in inner circumferential surface, and above-mentioned 2nd sliding bearing is kept on its outer peripheral surface.
Vertical shaft about other modes of the invention pumps, and above-mentioned rotary part is rotary shaft, and above-mentioned 2nd sliding part is located at
State the end of rotary shaft.
Vertical shaft about other modes of the invention pumps, and above-mentioned 1st sliding bearing and/or above-mentioned 2nd sliding bearing are along week
To dividedly constituting.
The vertical shaft pump of other modes of the invention is that there is the vertical shaft of multiple bearing arrangements to pump, in above-mentioned bearing arrangement extremely
Few one has above-mentioned 1st sliding bearing and above-mentioned 2nd sliding bearing.
Invention effect
In accordance with the invention it is possible to not losing wear resistance, when during dry operation and the draining comprising mud operates etc.
Also it is vibrated caused by reducing because of the destabilization power based on the generations such as frictional force and/or liquid film.In addition, according to the present invention,
The frictional force for being applied to bearing sliding surface can be reduced, as a result, due to the calorific value that can reduce sliding bearing, so energy
Enough use the higher bearing material of coefficient of friction, the i.e. higher bearing material of wear resistance.
Moreover, at least one set of above-mentioned sliding bearing has the 1st sliding axle in the vertical shaft pump with multiple sliding bearings
The composite structure with above-mentioned 2nd sliding bearing is held, thus, it is possible to provide a kind of integrally reduction vertical shaft pump possessed sliding axle
The abrasion held is to integrally extend the effective ways in service life.
Detailed description of the invention
Fig. 1 is the local skeleton diagram for carrying out the vertical shaft pump of standby operating in advance.
Fig. 2 is the figure for illustrating the operating condition of standby operating in advance.
Fig. 3 is the whole cross-sectional view for indicating to carry out the vertical shaft pump of standby operating in advance.
Fig. 4 is the enlarged drawing of previous bearing arrangement.
Fig. 5 is the perspective view of sliding bearing.
Fig. 6 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of present embodiment.
Fig. 7 is the cross-sectional view in the section XX ' shown in fig. 6.
Fig. 8 is the figure of the movement of bearing arrangement when indicating dry operating.
Fig. 9 is the figure of the movement of bearing arrangement when indicating draining operating.
Figure 10 is the figure for indicating vibration velocity when operating is dried in the vertical shaft pump of present embodiment.
Figure 11 is the figure for indicating bearing temperature when operating is dried in the vertical shaft pump of present embodiment.
Figure 12 is the figure for indicating the vibration velocity when vertical shaft pump of present embodiment carries out draining operating.
Figure 13 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.
Figure 14 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.
Figure 15 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.
Figure 16 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.
Figure 17 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.
Figure 18 is the cross-sectional view in the section XX ' shown in Figure 17.
Figure 19 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.
Figure 20 is the sectional elevation of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.
Figure 21 is the sectional elevation of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.
Figure 22 is the schematic sectional view of the vertical shaft pump of other embodiments.
Figure 23 is used as the sectional elevation of the bearing arrangement of base bearing.
Figure 24 is used as the sectional elevation of other bearing arrangements of base bearing.
Specific embodiment
Illustrate embodiments of the present invention referring to the drawings.In Fig. 6 to Figure 24, same or equivalent structure is wanted
Element marks identical appended drawing reference, and the repetitive description thereof will be omitted.
Fig. 6 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of present embodiment.In addition, present embodiment is vertical
Axis pump replaces the bearing 32,33 of the vertical shaft pump 3 shown in Fig. 3 for carrying out standby operating in advance and has been applicable in bearing dress shown in fig. 6
It sets, is the vertical shaft pump for pumping 3 identical structures with vertical shaft shown in Fig. 3, therefore omitting present embodiment in addition to bearing 32,33
3 whole explanations.
This bearing arrangement is metal with being made of superhard alloy or stainless steel etc. in the periphery of rotary shaft 10 (10 ')
Sleeve 11.In the peripheral side of sleeve 11 equipped with hollow cylinder shown in fig. 5 by resin material, ceramics, sintering metal or progress
The 1st sliding bearing 1 that the modified metal in surface is constituted.The outer peripheral surface (the 1st sliding part 17) and the 1st sliding bearing 1 of sleeve 11
Inner peripheral surface (sliding surface) it is opposite across the 1st very narrow clearance 7, and with sliding relative to the sliding surface of the 1st sliding bearing 1
Dynamic mode is constituted.The peripheral part of 1st sliding bearing 1 is fixed on the inner peripheral surface for the cartridge housing 12 being made of metal or resin,
Cartridge housing 12 is fixed on the shell 29 to vertical shaft pump 3 (referring to figure via flange part 12a and by the fixed mechanisms such as bolt 21b
Etc. 3) on the bearing part 13 of connections.
In addition, on the outer peripheral surface of the 1st cartridge housing 12 equipped with hollow cylinder by resin material, ceramics, sintering metal or
The 2nd sliding bearing 9 that the modified metal in surface is constituted is carried out.It is solid by fixed pin or bolt etc. in rotary shaft 10 (10 ')
Determine mechanism 21a and is fixed with sleeve shell 15.Sleeve shell 15 is to pass through the rotation of rotary shaft 10 (10 ') and rotary shaft 10 (10 ')
The mode similarly rotated is constituted.Sleeve 14 is equipped on the inner peripheral surface of sleeve shell 15.Inner peripheral surface (the 2nd sliding part of sleeve 14
18) opposite across the 2nd very narrow clearance 8 with the outer peripheral surface (sliding surface) of the 2nd sliding bearing 9, and with sliding relative to the 2nd
The mode of the sliding surface sliding of dynamic bearing 9 is constituted.
The admission port 19 for inputting the water comprising mud etc. to the 1st clearance 7 and the 2nd clearance 8 is equipped on sleeve shell 15.Stream
Enter water to admission port 19 from as flow path the 1st clearance 7 and the 2nd clearance 8 pass through.Like this, make water to the 1st due to being formed with
The flow path that clearance 7 and the 2nd clearance 8 pass through, and the 1st clearance 7 and the 2nd clearance 8 are also functioned as flow path, so can arrange
Flow water rapidly to the 1st clearance 7 and the 2nd clearance 8, to rapidly play the
The function of 1 sliding bearing 1 and the 2nd sliding bearing 9.
1st sliding bearing 1 and the 2nd sliding bearing 9 are in vertical shaft 3 starting of pump, bearing sleeve 11 and set in dry conditions
Cylinder 14, and across very thin liquid film bearing sleeve 11 and sleeve 14 under drainage condition.
In order to inhibit the stable state whirling of rotary shaft 10 (10 '), and inhibit to be applied to the 1st sliding axle because of whirling
Hold the load of the 1 and the 2nd sliding bearing 9, diametric clearance size (internal diameter-sleeve 11 of the 1st sliding bearing 1 of preferably the 1st clearance 7
Outer diameter) and the 2nd clearance 8 diametric clearance size (outer diameter of 2 sliding bearing 9 of internal diameter-the of sleeve 14) be respectively the 1st sliding
The internal diameter of bearing 1 1/1000 or more 1/100 or less, the outer diameter of the 2nd sliding bearing 9 1/1000 or more 1/100 or less.?
In the case that the size of 1 clearance 7 and the 2nd clearance 8 is bigger than these ranges, the stable state whirling of rotary shaft 10 (10 ') becomes larger, because
The whirling and the load for being applied to the 1st sliding bearing 1 and the 2nd sliding bearing 9 also becomes larger, thus in the presence of being difficult to steadily transport
The case where turning.In addition, there are the 1st clearance 7 and in the case where the size of the 1st clearance 7 and the 2nd clearance 8 is smaller than these ranges
2 clearances 8 burn viscous situation because of the friction between foreign matter by foreign matters from being blocked or the 1st sliding bearing 1 and the 2nd sliding bearing 9.
It is preferred that the diametric clearance size of the 1st clearance 7 is identical as the diametric clearance size of the 2nd clearance 8, but if the 1st sliding
Bearing 1, the 2nd sliding bearing 9, sleeve 14 or sleeve 11 are formed by resin etc. and these components are made to have elasticity, even if then the 1st
The diametric clearance size of clearance 7 and the diametric clearance size of the 2nd clearance 8, which have differences, can also play function of the invention.At this
In the case of, the diametric clearance size of the 2nd clearance 8 relative to the ratio of the diametric clearance size of the 1st clearance 7 is preferably 0.5 or more,
2.0 hereinafter, more preferably 0.7 or more, 1.3 or less.But in the 1st sliding bearing 1 as described later, the 2nd sliding bearing 9, set
Cylinder 14 or sleeve 11 are further via padded coamings such as rubber and in fixed situation (referring to Fig.1 3), even if because of fender
The deformation of material without in the range of above-mentioned size, the 1st sliding bearing 1 and the 2nd sliding bearing 9 also can simultaneously respectively with sleeve
11 and sleeve 14 contact, and play function of the invention.
Fig. 7 is the cross-sectional view in the section XX ' shown in fig. 6.As illustrated, it is configured to outer peripheral surface, the 1st sliding of sleeve 11
The respective Center-to-Center axis O substantially one of the inner peripheral surface of the inner peripheral surface of bearing 1, the outer peripheral surface of the 2nd sliding bearing 9 and sleeve 14
It causes.In addition, amplifying the size for showing the 1st clearance 7 and the 2nd gap 9 for convenience in Fig. 7.
Fig. 8 is the figure of the movement of bearing arrangement when indicating dry operating.When rotary shaft 10 (10 ') rotation, it is fixed on
Sleeve 11 in rotary shaft 10 (10 ') and the sleeve 14 being fixed on sleeve shell 15 also rotate.In dry conditions, in sleeve 11
Outer peripheral surface and the 1st sliding bearing 1 when being contacted on point A, can to rotary shaft 10 (10 ') generate reaction of bearing FAN.Due to
Reaction of bearing FAN, and frictional force F is generated on the opposite direction of the direction of rotation of rotary shaft 10 (10 ')AF, the frictional force
FAFDestabilization power as the whirling vibration on the opposite direction for causing direction of rotation in rotary shaft 10 (10 ').
On the other hand, sleeve 14 contacts on point B with the 2nd sliding bearing 9, thus generates reaction of bearing FBN, due to
Reaction of bearing FBN, generate and be used as frictional force FAFOpposite direction on power frictional force FBF.To rotary shaft 10 (10 ') body
For system, due to frictional force FAFWith frictional force FBFIt offsets, so rotary shaft 10 (10 ') can be stably rotated.In addition, rotation
The load (reaction of bearing) of shaft 10 (10 ') disperses on point A and point B, is thus applied to the frictional force of sliding bearing
Dispersion.As a result, generating heat caused by reducing because of friction, so that the temperature of bearing when inhibiting dry operating rises.
Fig. 9 is the figure of the movement of bearing arrangement when indicating draining operating.1st clearance 7 and the 2nd clearance 8 are filled with water, and
The water respectively constitutes liquid film 41, liquid film 42, and thus this bearing arrangement is functioned as fluid bearing device.Exist at this time
It upwards pressure in week caused by generating the rotation because of rotary shaft 10 (10 ') on liquid film 41 inhomogenous, as a result, in rotary shaft
Radial direction fluid force F is generated on 10 (10 ')ARWith axial fluid forces FAT.Axial fluid forces FATIt is produced as when draining operating
The destabilization power of raw vibration.In addition, axial fluid forces FATFor the frictional force F generated in above-mentioned dry operatingAFNegative side
Upward power.
In the past, in order to prevent the unstable vibration generated by the liquid film in vertical rotation axis, and by the inner surface of bearing
It is shaped as more circular shapes and not positive round shape.But in the water comprising a large amount of mud, it is made of in use resin
Bearing in the case where, exist due to abrasion cause the inner surface configuration of bearing to lose vibration suppressioning effect close to positive round shape
The case where.
Here, according to this bearing arrangement, in the liquid film 42 in the 2nd clearance 8, caused by generating the rotation because of sleeve 14
It upwards pressure in week inhomogenous, as a result, generating radial direction fluid force F in rotary shaft 10 (10 ')BRAnd axial fluid forces
FBT.At this point, due to axial fluid forces FATWith axial fluid forces FBTMutually opposite direction each other, so because liquid film 41, liquid film 42 generate
Destabilization power offset, caused by generating rotary shaft 10 (10 ') can not because of destabilization power quiveringly steadily
Rotation.
Figure 10 is when indicating that there is the vertical shaft pump 3 of the present embodiment of bearing arrangement shown in fig. 6 operating is dried
The figure of vibration velocity.In order to be compared with vertical shaft pump 3, and show the bearing arrangement with previous structure shown in Fig. 4
Vibration velocity when operating is dried in vertical shaft pump (previous structure).In addition, the bearing arrangement and axis shown in fig. 6 of previous structure
Bearing apparatus uses the identical material that wear resistance is high and coefficient of friction is big as sliding bearing.There is this known to as shown
The vertical shaft of bearing arrangement pumps in 3 (present embodiments), since starting until stopping with it is constant and compared with previous structure it is low
Vibration velocity operating.
Figure 11 is when indicating that there is the vertical shaft pump 3 of the present embodiment of bearing arrangement shown in fig. 6 operating is dried
The figure of bearing temperature.In order to be compared with vertical shaft pump 3, and show the bearing arrangement with previous structure shown in Fig. 4
Bearing temperature when operating is dried in vertical shaft pump (previous structure).In addition, the bearing arrangement and axis shown in fig. 6 of previous structure
Bearing apparatus uses the identical material that wear resistance is high and coefficient of friction is big as sliding bearing.There is this known to as shown
The vertical shaft of bearing arrangement pumps in 3 (present embodiments), keeps constant until stopping since starting and compared with previous structure
Low bearing temperature.
As shown in Figures 10 and 11, in the vertical shaft pump of the bearing arrangement with previous structure, due to being applied to rotary shaft
Frictional force it is big, so generating big vibration, increase as a result, the temperature of bearing rises.On the other hand, there is this bearing
In the vertical shaft pump 3 of device, as illustrated by fig. 8, vibration can be reduced and reduce frictional force, so as to inhibit
The rising of bearing temperature.
Figure 12 is when indicating that there is the vertical shaft pump 3 of the present embodiment of bearing arrangement shown in fig. 6 to carry out draining operating
The figure of vibration velocity.In order to be compared with vertical shaft pump 3, and show the bearing arrangement with previous structure shown in Fig. 4
Vertical shaft pump (previous structure) carries out vibration velocity when draining operating.In addition, the result is that the fortune pumped as vertical shaft shown in Figure 12
Turn condition and operates and measure the result of vibration at this time to be easy to produce the condition of vibration.There is this axis known to as shown
The vertical shaft of bearing apparatus pumps in 3 (present embodiments), since starting until stopping with it is constant and compared with previous structure it is low
Vibration velocity operating.
As mentioned above like that, vertical shaft pump 3 according to the present embodiment, even if during dry operation due to rotary shaft
The whirling of the axis of 10 (10 ') and lead to rotary body (sleeve 11 and sleeve 14) and the 1st sliding bearing 1 and the 2nd sliding bearing 9
Collide, but due to when the collision occurs the direction of frictional force mutually oppositely act on and offset, so being able to suppress rotation
The diverging of the whirling of shaft 10 (10 '), and prevent from vibrating caused by because of destabilization.Further, it is possible to reduce because of the vibration
It rubs caused by dynamic, to inhibit the rising of bearing temperature.
Since the vertical shaft pump 3 of present embodiment has the 1st sliding bearing 1 and the 2nd sliding bearing 9, so being capable of dispersion of dry
The frictional force of bearing sliding surface when dry operating, to inhibit to generate heat caused by the friction because of bearing sliding surface.As a result, with
Toward structure compared to the high bearing material of coefficient of friction, the i.e. high bearing material of wear resistance is able to use, so as to long-term
It is interior steadily to operate.
In addition, in the vertical shaft pump 3 of present embodiment, due to keeping the 1st sliding bearing on the inner peripheral surface of cartridge housing 12
1, the 2nd sliding bearing 9 is kept on its outer peripheral surface, so structure compact in the axial direction of vertical shaft pump 3 can be become.
In addition, in vertical shaft pump 3, the bearing for the part (sleeve 11 and sleeve 14) of rotary shaft 10 (10 ') being in water
Only carried out by sliding bearings such as the 1st sliding bearing 1 and the 2nd sliding bearings 9.That is, carrying out draining operating as pumping 3 in vertical shaft
Rotating machinery in be not suitable for rolling bearing as ball bearing or roller bearing, and this implementation can be played by sliding bearing
The effect of mode.
Next, illustrating the vertical shaft pump of other embodiments.Figure 13 is the axis pumped suitable for the vertical shaft of other embodiments
The longitudinal section view of bearing apparatus.As illustrated, in the bearing arrangement, in the back side (peripheral side) and set of the 1st sliding bearing 1
Padded coaming 20a and padded coaming 20b of the back side (peripheral side) of cylinder 14 configured with rubber etc..
By the way that these padded coamings 20a and padded coaming 20b is arranged, even if using nitrogen to the 1st sliding bearing 1 and sleeve 14
The not impact-resistant material such as SiClx or silicon carbide, it is damaged caused by impact when can also prevent because of operating.In addition, as above-mentioned
Like that, even if the size of the 1st clearance 7 and the 2nd clearance 8 not within the above range, passes through padded coaming 20a and/or padded coaming
The deformation of 20b also can make the 1st sliding bearing 1 and the 2nd sliding bearing 9 while contact respectively with sleeve 11 and sleeve 14, thus
The neutralization effect of above-mentioned destabilization power can fully be obtained.
Although in addition, back side and sleeve 14 of the padded coaming 20a and padded coaming 20b configuration in the 1st sliding bearing 1
Back side, but configure position and be not limited to this.For example, can be in the back side (inner circumferential side) and the 2nd sliding bearing 9 of sleeve 11
Back side (inner circumferential side), the back side of the back side of the back side of sleeve 11 and sleeve 14 or the 1st sliding bearing 1 and the 2nd sliding
Padded coaming 20a and padded coaming 20b is arranged in the back side of bearing 9.
Figure 14 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.As illustrated, at this
In bearing arrangement, metal backing is configured in the back side (peripheral side) for the 1st sliding bearing 1 being made of resin material
(back-metal) 31a is configured with padded coaming 20a in the back side (peripheral side) of backing 31a.Similarly, in sleeve 14
Back side (peripheral side) be configured with metal backing 31b, backing 31b back side (peripheral side) be configured with fender
Expect 20b.Even if being such labyrinth, effect identical with bearing arrangement shown in fig. 6 can be also played.
In addition, although backing 31a and backing 31b configuration is in the back side of the 1st sliding bearing 1 and the back side of sleeve 14,
But configuration position is not limited to this.For example, can be in the back side and the back side of the 2nd sliding bearing 9 of sleeve 11, sleeve 11
The back side of the back side or the 1st sliding bearing 1 of back side and sleeve 14 and the back side of the 2nd sliding bearing 9, with fender
Backing 31a and backing 31b is arranged in material 20a and padded coaming 20b together.
Figure 15 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.In this bearing arrangement,
As the 2nd sliding bearing 9 material and use superhard alloy or stainless steel and other metal materials, as sleeve 14 material and use
Resin material.Like this, even if the material of sliding bearing and sleeve in turn, can also play and bearing arrangement shown in fig. 6
Identical effect.
Figure 16 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.In this bearing arrangement,
Become reversed mode in the axial direction of rotary shaft 10 (10 ') with structure member to configure.Even if being such structure, can also rise
To effect identical with bearing arrangement shown in fig. 6.
Figure 17 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments, and Figure 18 is shown in Figure 17
The cross-sectional view in the section XX '.It is required that vertical shaft pump 3 is easy to be checked or replaced consumables etc. in the state of being set to drainage pumping plant
Maintenance.In addition, assembling when, need according to vertical shaft pump 3 shape make rotary shaft 10 (10 ') out of the 1st sliding bearing 1
Sleeve shell 15 and sleeve 14 are fixed in rotary shaft 10 (10 ') by side again after passing through.
Therefore, in this bearing arrangement, as shown in figure 18, it is configured to sleeve shell 15 and sleeve 14 is divided into two parts and shape
At the sleeve shell 15 of segmentation being be combined with each other by fixing bolt 24, thus, it is possible to be fixed in rotary shaft 10 (10 ').Pass through
Sleeve shell 15 and sleeve 14 are constituted like this, also can be easy to carry out assembling/decomposition in the setting place that vertical shaft pumps 3.
Figure 19 is the longitudinal section view of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.This bearing arrangement is in water supply
Mouth 19 is equipped with the strainer 23 with the opening (mesh width) smaller than the size of the 1st clearance 7 and the size of the 2nd clearance 8.By
This also can prevent the size than the size of the 1st clearance 7 and the 2nd clearance 8 big even if being mixed into the mud such as sand in draining
Slurry compounding to the 1st clearance 7 and the 2nd clearance 8.As a result, included in the water that the 1st clearance 7 and the 2nd clearance 8 pass through
The diameter of mud fully reduce, so as to reduce the sliding surface of the 1st sliding bearing 1 and the sliding surface of the 2nd sliding bearing 9
Abrasion.That is, the size of the 1st clearance 7 and the size of the 2nd clearance 8 are able to maintain that, so as to lasting progress in Fig. 8 and Fig. 9
The destabilization power of explanation offsets.
Furthermore it is preferred that the opening diameter of strainer 23 is less than half of the size of the 1st clearance 7 and the 2nd clearance 8.In addition, excellent
Admission port 19 is selected to be located on sleeve shell 15 at equal intervals along the circumference centered on the central axis of rotary shaft 10 (10 ').
Figure 20 is the sectional elevation of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.In the bearing arrangement,
It has been axially formed on the inner peripheral surface (sliding surface) of the 1st sliding bearing 1 and the outer peripheral surface (sliding surface) of the 2nd sliding bearing 9 more
A slot 35a.Due to the difference of the curvature between sleeve 11 and the inner peripheral surface (sliding surface) of the 1st sliding bearing 1 and the sliding of sleeve 14
The difference of curvature between face and the outer peripheral surface (sliding surface) of the 2nd sliding bearing 9 is minimum, so even if forming slot 35a like this, it is right
What the contact condition between the contact condition and the 2nd sliding bearing 9 and sleeve 14 between the 1st sliding bearing 1 and sleeve 11 generated
Influence is also small, so as to play effect identical with bearing arrangement shown in fig. 6.In addition, by forming slot 35a like this,
And the flow of the water passed through from the 1st clearance 7 and the 2nd clearance 8 can be made to increase.
In addition, slot 35a can also be made only in the one party in the 1st sliding bearing 1 and the 2nd sliding bearing 9.In addition,
Slot 35a can also be located at sleeve side.Slot 35a not only being axially formed along rotary shaft 10 (10 '), can also circumferentially, phase
Axial inclined direction is formed, or is formed as one or more helical form.
Figure 21 is the sectional elevation of the bearing arrangement pumped suitable for the vertical shaft of other embodiments.In the bearing arrangement,
1st sliding bearing 1 and the 2nd sliding bearing 9 are circumferentially divided into multiple portions, and configure in sleeve shell 15 with separating gap 35b
Inner peripheral surface on.Even if being such bearing arrangement, effect identical with bearing arrangement shown in fig. 6 can be also played.
In addition it is also possible to be only to divide the 1st sliding bearing 1 and one party in the 2nd sliding bearing 9 and formed.In addition,
Gap 35b can also be located at sleeve side, that is, can also divide sleeve 11 and/or sleeve 14.
In the bearing arrangement that the vertical shaft of each embodiment described above pumps, the 2nd sliding bearing 9 is in rotary shaft 10
Configuration on (10 ') is there is no limiting, as long as being connecing in rotary shaft 10 (10 ') in liquid portion, i.e. vertical shaft pumps, no matter be located at where
Effect of the invention can be played.In addition, even if not being in vertical shaft pump, but as long as to connect the structure of liquid when drawing water, being, for example,
The configuration of 2nd sliding bearing 9 (is driven into pusher side) outside vertical shaft pump and will be piped with the interior connection of vertical shaft pump and when draining operates
By the water of vertical shaft pump discharge come the structure lubricated, then effect of the invention can be similarly played.
In addition, illustrating to replace progress shown in Fig. 3 standby in advance in the vertical shaft pump of each embodiment described above
The bearing 32 and bearing 33 of the vertical shaft pump 3 of operating, and it is applicable in bearing arrangement shown in Fig. 6,13,14,15,16,17,19 respectively
Bearing, but it is not limited to this, also can replace any of bearing 32 and bearing 33 and is applicable in these bearing arrangements.In the feelings
Under condition, by making vertical shaft pump 3 that there are at least one these bearing arrangement, and the vibration of rotary shaft 10 (10 ') can be reduced significantly
It swings back and turns.As a result, the vibration for being applied to all bearings is reduced and the abrasion of bearing reduction, so as to integrally extend institute
There is the service life of bearing, and is able to extend maintenance time span.
In addition, vertical shaft pump increases the outfit number of bearing arrangement according to the length of rotary shaft 10 (10 '), and there are bearing dresses
It is set to three or more situations.Even if in this case, have and as the bearing arrangement at least one Fig. 6,13,
14, bearing arrangement shown in 15,16,17,19, i.e. at least one set can with can be rotated together with rotary shaft 10 (10 ')
1st sliding bearing 1 of the inner peripheral surface sliding contact of component and can be with the component that can be rotated together with rotary shaft 10 (10 ')
2nd sliding bearing 9 of outer peripheral surface sliding contact, and the whirling of rotary shaft 10 (10 ') can be reduced significantly.Its result
For, the vibration for being applied to all bearings is reduced and the abrasion of bearing is reduced, so as to integrally extend the service life of all bearings,
And it is able to extend maintenance time span.
Figure 22 is the schematic sectional view of the vertical shaft pump of other embodiments.As illustrated in vertical shaft pump 3, rotary shaft
10 ' run through impeller 22, and are equipped with the base bearing 37 that supported portion part 13 supports in its front end.Base bearing 37 and rotary shaft
10 ' opposite side is equipped with the bearing cage 38 for adjusting water flow.
Figure 23 is used as the sectional elevation of the bearing arrangement of the base bearing 37 of the pump of vertical shaft shown in Figure 22 3.As illustrated,
This bearing arrangement is equipped with sleeve 11 in the periphery of rotary shaft 10 ', and the end of rotary shaft 10 ' is formed as concavity.It is concave at this
Sleeve 14 is equipped with via padded coaming 20b in the inner circumferential of end.With sleeve 11 across the 1st clearance 7 and the 1st opposite sliding bearing
1 is configured with padded coaming 20a in its back side (peripheral side), and padded coaming 20a is fixed on cartridge housing 12.In sleeve 14
Inner circumferential side be configured with across the 2nd clearance 8 and the 2nd opposite sliding bearing 9, and with the inner peripheral surface of sleeve 14 and the 2nd sliding axle
The mode for holding 9 outer peripheral surface sliding contact is constituted.2nd sliding bearing 9 is fixed by cartridge housing 16, and cartridge housing 16 passes through bolt
21c and be fixed on bearing part 13.Admission port 19 is equipped on cartridge housing 16, the water inputted from admission port 19 is from the 1st clearance 7
And the 2nd clearance 8 pass through, thus function this bearing arrangement as fluid bearing device.
According to this bearing arrangement, effect identical with bearing arrangement shown in fig. 6 can be played.Herein on basis, lead to
It crosses the end in rotary shaft 10 ' and sleeve 14 is set, and the diameter of the inner peripheral surface (the 2nd sliding surface) of sleeve 14 can be reduced.As a result,
Can reduce the peripheral speed of the inner peripheral surface of sleeve 14, so as to inhibit the friction because of the 2nd sliding bearing 9 caused by send out
Heat.In addition, since the configuration of the 2nd sliding bearing 9 is near the end of rotary shaft 10 ', so can easily be done the 2nd sliding axle
9 installation/replacement is held, so as to easily be applicable in this bearing arrangement to existing vertical shaft pump.Although in addition, do not illustrate,
But it is preferred that substantially hemispherical bearing cage is arranged to avoid the mode of obstruction water flow in the downside (inflow side of water) of cartridge housing 16
38 (referring to Figure 22).In this case, in order to reduce the mud being mixed into water being mixed into the 1st clearance 7 and the 2nd clearance 8, preferably
It is configured to, is setting up admission port with water (flow) direction side at right angle on bearing cage 38, and by the admission port and cartridge housing
16 admission port 19 connects.
Figure 24 is used as the sectional elevation of other bearing arrangements of the base bearing 37 of the pump of vertical shaft shown in Figure 22 3.In this axis
In bearing apparatus, the end of rotary shaft 10 ' is formed as concavity, is equipped in the inner circumferential of the concave end via padded coaming 20b
Sleeve 14.Sleeve 14, from below to pushing, and is fixed in rotary shaft 10 ' by pressing plate 36.In addition, the sleeve 14 is relative to sleeve
11 configurations are on approximately axially identical position.Thereby, it is possible to reduce the setting volume of this bearing arrangement.
Suitable for the bearing arrangement that the vertical shaft of each embodiment described above pumps, preferably the 2nd sliding bearing 9 it is outer
Diameter is 0.2 or more, 2.0 or less relative to the ratio of the internal diameter of the 1st sliding bearing 1.If outer peripheral surface (the sliding of the 2nd sliding bearing 9
Face) diameter ratio be more than the range, then the peripheral speed of sleeve 14 becomes larger, to cause when dry operating because of friction
Fever increase, therefore not preferably.In addition, using different multiple 1st sliding bearing 1 of internal diameter, it is preferable to use
With 0.2 times or more for its most path and be maximum diameter 2.0 times of outer diameters below the 2nd sliding bearing 9.
In addition, suitable for the bearing arrangement that the vertical shaft of each embodiment described above pumps, for for the 1st sliding
The material of bearing 1 and the 2nd sliding bearing 9, in order to be functioned in dry operating and draining operating as bearing during length, and
Low-friction coefficient is required during dry operation, high abrasion resistance is required in the water comprising mud.It is therefore preferable that the 1st sliding axle
It holds the 1 and the 2nd sliding bearing 9 to be formed by the high material of the wear resistance comprising resin material, wherein the resin material includes PA (poly-
Amide), PBI (polybenzimidazoles), POM (polyacetals), PBT (polybutylene terephthalate (PBT)), PET (poly terephthalic acid
Second diester), PPE (polyphenylene oxide), PC (polycarbonate), UHMW-PE (ultra high molecular polyethylene), PTFE (polytetrafluoroethylene (PTFE)), PPS
(polyphenylene sulfide), PI (polyimides), PEEK (polyether-ether-ketone), PAR (polyarylate), PSF (polysulfones), PEI (polyetherimide),
At least one of PAI (polyamidoimide), PES (polyether sulfone) and PF (phenolic resin).
Also, it is preferred that the 1st sliding bearing 1 and the 2nd sliding bearing 9 are added to carbon fiber by being included in above-mentioned resin material
The material of dimension, glass fibre, carbon particle, glass particle or graphite etc., the material that strengthen/be modified formed.In addition, the
1 sliding bearing 1 and the 2nd sliding bearing 9, can also be by including silicon nitride or carbon from needing with from the viewpoint of high abrasion resistance
The ceramics of SiClx etc. or the material of metal are formed.
The specific wear rate of these materials (with the index for the wear resistance that volume/bearing load/travel distance defines of rubbing)
At least 1 × 10-6mm2/ N is hereinafter, be 1 × 10 according to material-7mm2/ N or less.Therefore, although needing to select in previous structure
Select while realizing the material of low frictional properties and wear resistance, but due to having low frictional properties in above-mentioned material, as long as so
Only consider wear resistance.
Sleeve 11 and sleeve 14 can be by including superhard alloy and stainless steel and other metal materials, ceramics or above-mentioned resinous wood
The material of material is formed, preferably the high material of wear resistance.The material of 1st sliding bearing 1 and the 2nd sliding bearing 9 may be phase
Mutually different material.The material of sleeve 11 and sleeve 14 may be mutually different material.The present invention no matter will have how
Coefficient of friction material be used for the 1st sliding bearing 1, the 2nd sliding bearing 9, sleeve 11 and sleeve 14, can reduce unstable
Change power.
The present invention is not limited to the vertical shaft of above-mentioned embodiment pump, the vertical shaft that can be used to have sliding bearing well
Pump, more particularly to well for by leading standby operating each operating condition (operating in air, air water stirring operating,
Operating condition as mixing wastewater with air operating, quiet rum, gas-tight operating) and be applied to the load change of bearing, lead to shakiness
Surely change the vertical shaft pump of power variation.
In addition, the vertical shaft pump of the respective embodiments described above is constituted in a manner of it can be set to drainage pumping plant.Due to collaborating formula
Deng the drainage pumping plant discharge that sewer is drained with rainwater include mud water, so the vertical shaft of the respective embodiments described above
Pump is preferably applied to drainage pumping plant.Especially for big depth type rain-water drainage equipment and be using by setting pot be set to pump discharge
In the drainage pumping plant of the rear sand setting mode of side, due to the draining pump with the preceding sand setting mode that setting pot is arranged before the inflow side of pump
It stands more compared to mud amount, so can be pumped better using the vertical shaft of the respective embodiments described above.
Above-mentioned embodiment is to have the people of the usual knowledge under technical field belonging to the present invention that can implement this
It is recorded for the purpose of invention.As long as the various modifications example of above embodiment is that those skilled in the art can be achieved certainly,
Technical idea of the invention can also be suitable for other embodiments.Therefore, the present invention is not limited to documented embodiment party
Formula is explained in the widest range in accordance with the technical idea being defined by the claims.
Description of symbols
1 the 1st sliding bearing, 3 vertical shafts pump, 5 through holes, 6 air hoses, 6a opening, 7 the 1st clearances, 8 the 2nd clearances, 9 the 2nd are slided
Dynamic bearing, 10 rotary shafts, 10 ' rotary shafts, 11 sleeves, 12 cartridge housings, 12a flange part, 13 bearing parts, 14 sleeves, 15 sleeves
Shell, 16 cartridge housings, 17 the 1st sliding parts, 18 the 2nd sliding parts, 19 admission ports, 20a padded coaming, 20b padded coaming, 21a are fixed
Mechanism, 21b fixed mechanism, 22 impellers, 23 strainers, 24 fixing bolts, 27 water suction bell-jars, 28 discharge bowl-shaped portions, 29 shells, 30
Elbow, 31a backing, 31b backing, 32 upper bearings, 33 lower bearings, 34 shaft seals, 35a slot, the gap 35b, 36 pressures are discharged
Plate, 37 base bearings, 38 bearing cages, 100 sinks.
Claims (19)
1. a kind of vertical shaft pump comprising:
Rotary shaft, has the 2nd sliding part with the 1st sliding part and on inner peripheral surface on outer peripheral surface, and can in water and
It is rotated in air；
Impeller is installed on the rotary shaft；
1st sliding bearing passes through the 1st sliding part described in inner circumferential surface bearing；With
2nd sliding bearing passes through the 2nd sliding part described in the surface bearing of periphery,
The rotary shaft extends through the impeller,
1st sliding bearing and the 2nd sliding bearing are set to lower section compared with the impeller.
2. vertical shaft pump as described in claim 1, which is characterized in that
1st sliding bearing and the 2nd sliding bearing are constituted in a manner of supporting the front end of the rotary shaft.
3. vertical shaft pump as described in claim 1, which is characterized in that
1st sliding part is mounted to the outer peripheral surface of the sleeve of the rotary shaft, and the 2nd sliding part is mounted to sleeve shell
Inner peripheral surface on sleeve inner peripheral surface, wherein the sleeve shell is installed on the rotary shaft.
4. vertical shaft pump as described in claim 1, which is characterized in that
1st sliding part is mounted to the outer peripheral surface of the 1st sleeve of the rotary shaft, and the 2nd sliding part is mounted to institute
State the inner peripheral surface of the 2nd sleeve of rotary shaft.
5. vertical shaft pump as described in claim 1, which is characterized in that
1st sliding bearing can be constituted in a manner of the 1st sliding part described in drying condition and drainage condition lower support,
2nd sliding bearing in a manner of the 2nd sliding part described in drying condition and drainage condition lower support can be constituted.
6. vertical shaft pump as described in claim 1, which is characterized in that
The size of diametric clearance between 1st sliding part and the 1st sliding bearing is the internal diameter of the 1st sliding bearing
1/1000 or more, 1/100 hereinafter,
The size of diametric clearance between 2nd sliding part and the 2nd sliding bearing is the outer diameter of the 2nd sliding bearing
1/1000 or more, 1/100 or less.
7. vertical shaft pump as described in claim 1, which is characterized in that
The size of diametric clearance between 2nd sliding part and the 2nd sliding bearing is relative to the 1st sliding part and institute
The ratio for stating the size of the diametric clearance between the 1st sliding bearing is 0.5 or more, 2.0 or less.
8. vertical shaft pump as claimed in claim 7, which is characterized in that
The size of diametric clearance between 2nd sliding part and the 2nd sliding bearing is relative to the 1st sliding part and institute
The ratio for stating the size of the diametric clearance between the 1st sliding bearing is 0.7 or more, 1.3 or less.
9. vertical shaft pump as described in claim 1, which is characterized in that
The ratio of internal diameter of the outer diameter of 2nd sliding bearing relative to the 1st sliding bearing is 0.2 or more, 2.0 or less.
10. vertical shaft pump as described in claim 1, which is characterized in that
The bearing for the part of the rotary shaft being in water only by the 1st sliding bearing and the 2nd sliding bearing come into
Row.
11. vertical shaft pump as described in claim 1, which is characterized in that
1st sliding bearing and the 2nd sliding bearing include resin material, ceramics or metal, wherein the resin material packet
Containing PA, PBI, POM, PBT, PET, PPE, PC, UHMW-PE, PTFE, PPS, PI, PEEK, PAR, PSF, PEI, PAI, PES and PF
At least one of.
12. vertical shaft pump as claimed in claim 11, which is characterized in that
1st sliding bearing and the 2nd sliding bearing include to be added to carbon fiber, glass fibre, carbon particle, glass particle
And the resin material of at least one of graphite.
13. vertical shaft pump as described in claim 1, which is characterized in that
Be formed with make water between the 1st sliding part and the 1st sliding bearing gap and the 2nd sliding part and institute
State the flow path that the gap between the 2nd sliding bearing passes through.
14. vertical shaft pump as described in claim 1, which is characterized in that
It is constituted in a manner of it can be set to drainage pumping plant.
15. vertical shaft pump as claimed in claim 13, which is characterized in that
There is strainer on the admission port to the flow path water delivery.
16. vertical shaft pump as described in claim 1, which is characterized in that
With the 1st cartridge housing and the 2nd cartridge housing,
1st cartridge housing keeps the 1st sliding bearing on inner peripheral surface, and the 2nd cartridge housing keeps institute on outer peripheral surface
State the 2nd sliding bearing.
17. vertical shaft pump as described in claim 1, which is characterized in that
2nd sliding part is located at the end of the rotary shaft.
18. vertical shaft pump as described in claim 1, which is characterized in that
1st sliding bearing and/or the 2nd sliding bearing are circumferentially dividedly constituted.
19. a kind of vertical shaft pump, has multiple bearing arrangements, which is characterized in that
At least one of described bearing arrangement is sliding with the 1st sliding bearing described in any one of claims 1 to 18 and the 2nd
Dynamic bearing.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-154919 | 2013-07-25 | ||
| JP2013154919 | 2013-07-25 | ||
| JP2014013371 | 2014-01-28 | ||
| JP2014-013371 | 2014-01-28 | ||
| CN201480041832.6A CN105408635B (en) | 2013-07-25 | 2014-07-24 | Vertical shaft pump |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480041832.6A Division CN105408635B (en) | 2013-07-25 | 2014-07-24 | Vertical shaft pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107605793A CN107605793A (en) | 2018-01-19 |
| CN107605793B true CN107605793B (en) | 2019-08-23 |
Family
ID=52393384
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710922716.0A Active CN107605793B (en) | 2013-07-25 | 2014-07-24 | Vertical shaft pump |
| CN201480041832.6A Active CN105408635B (en) | 2013-07-25 | 2014-07-24 | Vertical shaft pump |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480041832.6A Active CN105408635B (en) | 2013-07-25 | 2014-07-24 | Vertical shaft pump |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JP6408990B2 (en) |
| CN (2) | CN107605793B (en) |
| WO (1) | WO2015012350A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6382147B2 (en) * | 2015-04-24 | 2018-08-29 | 株式会社荏原製作所 | Sliding bearing device and pump equipped with the same |
| WO2017212534A1 (en) * | 2016-06-07 | 2017-12-14 | 株式会社荏原製作所 | Vertical shaft pump |
| JP6749393B2 (en) * | 2016-06-07 | 2020-09-02 | 株式会社荏原製作所 | Vertical pump |
| DE102017113437B4 (en) * | 2017-06-19 | 2020-09-03 | Vibracoustic Gmbh | Bearing bush |
| US11644064B2 (en) | 2017-02-24 | 2023-05-09 | Vibracoustic Se | Bearing bush |
| JP6936062B2 (en) * | 2017-07-05 | 2021-09-15 | 株式会社荏原製作所 | Vertical pump |
| CN107365473A (en) * | 2017-09-05 | 2017-11-21 | 北京嘉倍通科技有限公司 | A kind of corrosion resisting bearing material and its preparation method and application |
| JP6994194B2 (en) * | 2017-11-30 | 2022-01-14 | 株式会社荏原製作所 | Plain bearing device and pump equipped with it |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6408990B2 (en) | 2018-10-17 |
| CN105408635B (en) | 2017-10-27 |
| JPWO2015012350A1 (en) | 2017-03-02 |
| JP2019023470A (en) | 2019-02-14 |
| CN105408635A (en) | 2016-03-16 |
| WO2015012350A1 (en) | 2015-01-29 |
| JP6603382B2 (en) | 2019-11-06 |
| CN107605793A (en) | 2018-01-19 |
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