CN205991014U - A kind of liquid rotary compressor - Google Patents

Abstract

A kind of liquid rotary compressor, belongs to liquid rotary compressor technical field.Impeller (13) both sides respectively pass through front distribution plate (11) and rear distribution plate (14) connection drive end bearing bracket (1) and rear end cap (15) it is characterised in that：Described impeller (13) is provided with one, gap between impeller (13) both sides and front distribution plate (11) and rear distribution plate (14) is 0.0005～0.0015 times of impeller (13) diameter, it is respectively equipped with double mechanical seal (23), described front distribution plate (11), rear distribution plate (14) are mounted on automatic pressure regulating device between the inner chamber of drive end bearing bracket (1) and rear end cap (15) and described axle (6).This utility model has isotherm compression, smooth running is reliable, structure is simple, working service is convenient, the features such as large-minded under rated discharge pressure.The flexible exhaust structure of exhaust end is it is ensured that compressor no overcompression phenomenon, and so that compressor is always worked on best efficiency point.

Description

A kind of liquid rotary compressor

Technical field

A kind of liquid rotary compressor, belongs to liquid rotary compressor technical field.

Background technology

Liquid rotary compressor is mainly used in the inflammable of the industries such as chemical industry, petrochemical industry, oil, natural gas, coal, town gas liquefaction The compression of explosion hazard gases, conveying and recovery.The principle of liquid rotary compressor, impeller is eccentrically disposed within the pump housing, and in the pump housing Introduce a certain amount of water or other liquid.When impeller (rotor) rotates and reaches certain rotating speed, due to the effect of centrifugal force, liquid It is thrown out of, form a pendular ring being attached to pump housing inner surface.Form a month teeth cavity, it is some between impeller surface and pendular ring The cell (element volume) that volume does not wait.The volume of each cell of liquid rotary compressor with impeller rotation period expand and contract Little.Suction, air vent are correspondingly offered on the end cap of pump housing both sides.So, impeller rotates a circle, and just can hold in each primitive Air-breathing, compression, aerofluxuss and expansion process that may be present is realized in long-pending.Gas discharge can take a part of liquid out of, thus necessary Supplement a certain amount of new liq in air entry.During liquid rotary compressor work, select the less liquid of viscosity as far as possible.Pendular ring compresses The feature of machine is that structure is simple, and easy to manufacture, easy and simple to handle, quick-wear part is few, and the pulsating nature of aerofluxuss and noise are all less.This Outward, liquid has sufficient cooling effect, and compressed gas finishing temperature is very low, so liquid rotary compressor is applied under compression high temperature easily The gas decomposing, such as acetylene, nitric sulfid, hydrogen sulfide etc..Because compressed media is not directly contacted with the pump housing, liquid rotary compressor is also special It is not applied to the gas (as chlorine) that compression has severe corrosive.Can be selected for one kind in this case not rise with by compressed gas The liquid of effect as sealing fluid, such as compression chlorine when concentrated sulphuric acid.

Content of the invention

Technical problem to be solved in the utility model is：Overcome the deficiencies in the prior art, provide that a kind of structure is simple, fortune Turn steadily reliable, under rated discharge pressure liquid rotary compressor that is large-minded and being easy to maintenance.

This utility model solves its technical problem and be employed technical scheme comprise that：This kind of liquid rotary compressor, including being sleeved on Drive end bearing bracket on axle, the pump housing, impeller and rear end cap, impeller is arranged in the pump housing by eccentric shaft, and drive end bearing bracket and rear end cap divide It is not mounted on an axle by bearing, described impeller both sides pass through front distribution plate respectively and rear distribution plate connects drive end bearing bracket and rear end Lid it is characterised in that：Described impeller is provided with one, and the gap between impeller both sides and front distribution plate and rear distribution plate is leaf 0.0005～0.0015 times of wheel diameter, is respectively equipped with both-end between the inner chamber of described drive end bearing bracket and rear end cap and described axle Face mechanical seal, front distribution plate, rear distribution plate are mounted on automatic pressure regulating device.

This utility model has isotherm compression, smooth running is reliable, structure is simple, working service is convenient, in rated discharge Under pressure large-minded the features such as.Because compressor of the present utility model has and only one of which impeller, on the basis of an impeller, Study through long-time, the gap between optimized choice impeller and front distribution plate and rear distribution plate, both simplified pump body knot Structure, reduces pump housing own vol and weight, and version is simpler, and energy-conservation decreases installation and the maintenance of parts, and can protect The needs of card huge discharge, the appearance simultaneously also reducing fault in running is it is easy to maintenance.

Automatic pressure regulating device preferably employs the pressure regulation valve ball that can automatically adjust pressure at expulsion, by the pressure regulation knot of automatic Regulation Structure forms flexible exhaust mode it is ensured that compressor no overcompression phenomenon in exhaust end, and so that compressor is always worked in On good efficient point.Using outer flushing double mechanical seal it is ensured that the complete No leakage of compressed medium.

The outside of described drive end bearing bracket and rear end cap is respectively equipped with front cooling body and aftercooler structure, described front cooling The two ends of mechanism and aftercooler structure are respectively provided with respective water inlet and outlet.

Cooling body and aftercooler structure before the outside of drive end bearing bracket and rear end cap is respectively equipped with, front cooling body and rear cold But the two ends of mechanism are respectively provided with respective water inlet and outlet such that it is able to before ensureing in cooling body and aftercooler structure Water remain circulation, and then the temperature of the water in cooling body and aftercooler structure before ensureing is relatively low, thus preferably will The heat that bearing produces quickly takes away the heat additionally it is possible to produce bearing by the conduction of front cooling body and aftercooler structure Quickly take away, so that the heat that bearing produces quickly is distributed it is ensured that bearing exists by water cooling on the basis of natural cooling Run in one good environment, improve the performance and used life of bearing, reduce the frequency of maintenance of water ring compressor.

Preferably, drive end bearing bracket and rear end cap all include the air inlet of setting and air vent on end cap body and end cap body, Air inlet is arranged on the surface of end cap body, and air vent is arranged on side in the middle part of end cap body, and end cap body lower part side sets There is working solution import, and for emptying end cap and the emptier of pump body liquid, end cap body outer rim is provided with multiple hanging Ear, arranges multiple installing holes and hole for hoist by hanger.Air inlet is arranged on the surface of end cap body, and air vent is arranged on Side in the middle part of end cap body it is preferred that by the bore of air vent make larger, when going wrong in pump chamber, can pass through Air vent puts in handss and instrument to change easily worn part；It is provided with multiple hangers in end cap body outer rim, and can be arranged by hanger Multiple installing holes and hole for hoist, are firmly assembled with compressor main body by installing hole, realize the whole machine of compressor by hole for hoist Or the lifting of liquid rotary compressor end cap, it is to avoid the deformation causing because of direct lifting end cap internal structure, to the internal junction of compressor It is configured to damage, and then affect compressor performance.

Preferably, the height of the end face of drive end bearing bracket and rear end cap is 350～2000mm, and width is 400～1800mm.Increase The scope of application of drive end bearing bracket and rear end cap, and the range of compressor, realize the use demand of large-scale compressor.

Preferably, emptier includes pump housing evacuation port and end cap evacuation port, and pump housing evacuation port is arranged on end cap body end The positive bottom in face, end cap evacuation port is arranged on pump housing evacuation port side.It is respectively provided with pump housing evacuation port and end cap evacuation port, can be by The liquid of end cap chamber body and pump housing inner chamber is discharged respectively, and during compressor shutdown, in the pump housing, liquid can be emptied by the pump housing Mouth flows out；, on the side of pump housing evacuation port, with gas outlet in the same side, during compressor shutdown, end cap cavity is empty for end cap evacuation port Between liquid can be flowed out by end cap evacuation port, effectively ensure the thorough discharge of the liquid in the pump housing and end cap.

The diameter D of described impeller is 200～1000mm, and the width B of impeller is 60～700mm.

Pressure at expulsion is 0.1～0.9Mpa G, and tolerance is 3～200m³/min.

The hub diameter d of described impeller is 0.4～0.6D, and wheel hub angle, θ is 3～8 °.

Interior arc radius R1 of the blade of described impeller are 0.15～0.2D, and outer arc radius R2 of blade are 0.2～0.3D, The inner arc center of circle place circular diameter D1 of blade is 0.8～0.9D, the outer arc center of circle place circular diameter D2 of blade is 0.75～ 0.85D, the inclination alpha of root of blade is 3～8 °, and blade quantity is 17～23.Optimize impeller profile and aerofluxuss angle, only profit Pressure at expulsion can be reached 0.1～0.9Mpa G with an impeller, realize the demand of huge discharge.

Described bearing is single row roller bearing, and single row roller bearing side is respectively equipped with and is sleeved on axle Oil sealing, oil sealing includes medium ring, inner ring and outerring, and medium ring end face interference is arranged on outer shroud, described internal ring floating mount in Ring and the inside of outer shroud, the outer ring of medium ring and the inner ring of internal ring are respectively equipped with sealing device, and medium ring is provided with refluxing opening, refluxing opening Connection medium ring and the inner space of outer shroud；Sealing device is sealing ring, and the outer ring of medium ring and the inner ring of internal ring are respectively equipped with installation The annular seal groove of sealing ring, the seal groove on the outer ring of medium ring and the inner ring of internal ring is respectively at least provided with one group.

Form inside and outside two-layer sealing ring by medium ring, inner ring and outerring, medium ring forms fixed layer, internal ring with outer shroud in outer layer Floating in inner space between, can follow axle and rotate together, forms internal layer, and, the outer ring of medium ring and internal ring interior Circle is respectively equipped with sealing device, both ensure that the oil in oil sump will not leak, has been avoided that the friction between internal ring and axle again, meets The lubricating condition of thin oil lubricant, meanwhile, ensures sealing effectiveness, it is to avoid friction, the service life of extending shaft again.When equipment runs When, due to bearing rotation the problems such as, the oil of oil sump can be splashed on the oil sealing of water ring compressor, due to medium ring sealing ring and interior The sealing function of ring sealing ring, lubricating oil can be back in oil sump by refluxing opening.Because internal ring is compared by inner ring seal circle Closely it is mounted on an axle, does not have Relative friction and axle between, therefore, will not cause because Relative friction is countershaft to damage.

Described front cooling body includes front cooling chamber, front cooling chamber cap and front water cavity, and front cooling chamber inner face is fixing even Connect the bearing block outside described drive end bearing bracket, outer face cools down chamber cap before being fixed with, and is provided around front cooling inside front cooling chamber The front water cavity of chamber body setting；

Aftercooler structure includes rear cooling chamber and rear water cavity, after cooling interior is provided around rear cooling chamber cavity setting afterwards Water cavity, rear cooling chamber inner face is fixedly connected the bearing block outside described rear end cap, and rear cooling chamber outer face is provided with axially fixed Position mechanism, cooling chamber outer face after being sealed by axial positioning mechanism；

The top of described front water cavity and rear water cavity all disconnects setting, and is respectively provided with the two ends of front water cavity and rear water cavity Respective water inlet and outlet.

Described axial positioning mechanism includes positioning bearing seat, positioning bearing gland, angular contact ball bearing and locking nut, Positioning bearing seat is sleeved on the end of axle, and its inner face is fixedly connected described rear cooling chamber, and its outer face is fixedly connected fixed Position bearing gland, angular contact ball bearing is sleeved on axle by positioning bearing seat and outer end is fastened by locking nut.

It is provided with cooling water in front water cavity and rear water cavity, can be by the heat fast speed belt of the lubricating oil in front oil sump and rear oil sump Walk, but also quickly can be taken away by the heat that bearing is produced by the conduction of front cooling chamber and rear cooling chamber, in natural cooling On the basis of by water cooling make bearing produce heat quickly distribute it is ensured that bearing is transported in a good environment OK, improve the performance and used life of bearing, reduce the frequency of maintenance of water ring compressor；Front water cavity and the top of rear water cavity All disconnect, and water inlet connect with the two ends of front water cavity and rear water cavity respectively with outlet such that it is able to ensure front water cavity and after Water in water cavity remains that the temperature of the water in circulation, and then the front water cavity of guarantee and rear water cavity is relatively low, thus preferably by axle The heat holding generation is quickly taken away.

Described rear cooling interior is provided with the disc being sleeved on axle, and disc is held out against in axle by bearing spacer the inner On, bearing spacer outer end is fixedly connected described angular contact ball bearing.

Compared with prior art, this utility model is had an advantageous effect in that：This utility model has isotherm compression, fortune Turn that steadily reliable, structure is simple, working service is convenient, the features such as large-minded under rated discharge pressure.Specifically, in drive end bearing bracket It is respectively equipped with front cooling body and aftercooler structure with the outside of rear end cap, the two ends of front cooling body and aftercooler structure are respectively Respective water inlet and outlet are set such that it is able to the water in cooling body and aftercooler structure before ensureing remains and follows The temperature of the water in cooling body and aftercooler structure before ring, and then guarantee is relatively low, thus the heat preferably bearing being produced Quickly take away additionally it is possible to quickly be taken away by the heat that bearing is produced by the conduction of forward and backward cooling body, in the base of natural cooling So that the heat that bearing produces quickly is distributed it is ensured that bearing runs in a good environment by water cooling on plinth, carry The high performance and used life of bearing, reduces the frequency of maintenance of water ring compressor.

Automatic pressure regulating device preferably employs the pressure regulation valve ball that can automatically adjust pressure at expulsion, by the pressure regulation knot of automatic Regulation Structure forms flexible exhaust mode it is ensured that compressor no overcompression phenomenon in exhaust end, and so that compressor is always worked in On good efficient point.Using outer flushing double mechanical seal it is ensured that the complete No leakage of compressed medium.Can be widely applied to The compression of the flammable explosive gas of industry, conveying and the recovery such as work, petrochemical industry, oil, natural gas, coal, town gas liquefaction.

Brief description

Fig. 1 is the front view partial schematic sectional view of liquid rotary compressor of the present utility model.

Fig. 2 is the side view schematic diagram of liquid rotary compressor of the present utility model.

Fig. 3 is the cooling body schematic view of the mounting position of Fig. 2.

Fig. 4 is the part A enlarged diagram of Fig. 3.

Fig. 5 is the cross-sectional schematic in B-B direction in Fig. 3.

Fig. 6 is the partial enlarged drawing at C in Fig. 5.

Fig. 7 is blade wheel structure front view schematic diagram.

Fig. 8 is the side view schematic diagram of Fig. 7.

Fig. 9 is oil sealing installation diagram schematic diagram.

Figure 10 is the ring structures side view schematic diagram of oil sealing.

Figure 11 is the D enlarged schematic partial view of Figure 10.

Figure 12 is installation relation schematic diagram in compressor for the oil sealing.

Figure 13 is end cover structure schematic diagram.

Figure 14 is the side view schematic diagram of Figure 13.

Figure 15 is the rearview schematic diagram of Figure 13.

Wherein, 1, drive end bearing bracket 101, air inlet 102, installing hole 103, working solution import 104, air vent 105, pump Body evacuation port 106, end cap evacuation port 107, bearing bracket stand 108, leakage evacuation port 109, lower margin adjustment bolt hole 110, front end Lid body 111, lower margin bearing 2, bearing block 3, front cooling chamber 301, front coolant jacket 4, bearing door 5, front cooling chamber cap 6th, axle 7, hole for hoist 8, permanent position lubricating cup 9, oil sealing 901, medium ring 902, medium ring sealing ring 903, outer shroud 904, internal ring 905th, inner ring seal circle 906, refluxing opening 907, groove 908, sewage draining exit 10, turnbuckle 11, front distribution plate 12, the pump housing 13rd, impeller 131, blade 14, rear distribution plate 15, rear end cap 151, rear end cap body 16, rear cooling chamber 161, rear cooling Set 17, disc 18, bearing spacer 19, positioning bearing seat 20, positioning bearing gland 21, angular contact ball bearing 22, single-row Cylinder roller bearing 23, double mechanical seal 24, the first trip bolt 25, pressure regulation valve ball 26, the second trip bolt 27th, front water cavity 28, rear water cavity 29, locking nut 30, water inlet 31, outlet 32, rear oil sump 33, sealing ring.

Specific embodiment

Fig. 1～15 are most preferred embodiments of the present utility model, and 1～15 pair of this utility model does further below in conjunction with the accompanying drawings Explanation.

Referring to the drawings 1 and 2：A kind of liquid rotary compressor, including the drive end bearing bracket 1 being sleeved on axle 6, the pump housing 12, impeller 13 and Rear end cap 15, impeller 13 is arranged in the pump housing 12 by axle 6 bias, and drive end bearing bracket 1 and rear end cap 15 are installed by bearing respectively On axle 6, the outside of drive end bearing bracket 1 and rear end cap 15 is respectively equipped with front cooling body and aftercooler structure, drive end bearing bracket 1 and rear end cap It is respectively equipped with double mechanical seal 23 between 15 inner chamber and axle 6, pass through between drive end bearing bracket 1 and rear end cap 15 and the pump housing 12 to draw Tight bolt 10 connects, and impeller 13 both sides pass through front distribution plate 11 respectively and rear distribution plate 14 connects drive end bearing bracket 1 and rear end cap 15.Row Atmospheric pressure is 0.1～0.9Mpa G, and tolerance is 3～200m³/min.

Impeller 13 and axle 6 adopt interference fit to connect transmitting torque, and the axially position of impeller 13 is by the angular contact ball of rear end Bearing 21 adjustment positioning.The rotary part of axle 6 and impeller 13 composition is eccentrically mounted in the pump housing 12, and axle 6 two ends are by single-row circle Post roller bearing 22 supports, and two angular contact ball bearings 21 that rear end is installed back-to-back are in order to the axially position of rotary part；Two The axle dynamic sealing at end employs Double End integrated mechanical sealing 23, and integral installation is on axle 6.Mechanical sealing assembly is fastened with first Screw 24 is fastened on axle 6.Front distribution plate 11 and rear distribution plate 14 second trip bolt 26 be fastened on respectively drive end bearing bracket 1, after On end cap 15.Front distribution plate 11, rear distribution plate 14 are mounted on automatic pressure regulating device, and automatic pressure regulating device is to automatically adjust aerofluxuss The pressure regulation valve ball 25 of pressure.Angular contact ball bearing 21 and single row roller bearing 22, by the way of thin oil lubricant, work as bearing When indoor lubrication oil consumption reduces, permanent position lubricating cup 8 can automatic repairing, bearing enclosure employs labyrinth oil seal 9, the hanging of whole machine Dress devises hole for hoist 7.

Referring to the drawings 3～6：Front cooling body includes front cooling chamber 3, front cooling chamber cap 5 and front water cavity 27, front cooling chamber 3 Inner face is fixedly connected the bearing block 2 in drive end bearing bracket 1 outside, and outer face cools down chamber cap 5 before being fixed with, and bearing block 2 inner face is provided with Bearing door 4, is provided around the front water cavity 27 of front cooling chamber 3 cavity setting inside front cooling chamber 3；Aftercooler structure is cold after including But room 16 and rear water cavity 28, is provided around the rear water cavity 28 of rear cooling chamber 16 cavity setting, rear cooling chamber 16 in rear cooling chamber 16 Inner face is fixedly connected the bearing block 2 in rear end cap 15 outside, and rear cooling chamber 16 outer face is provided with axial positioning mechanism, by axial direction Cooling chamber 16 outer face after detent mechanism sealing；The top of front water cavity 27 and rear water cavity 28 all disconnects setting, and in front water cavity 27 It is respectively provided with respective water inlet 30 and outlet 31 with the two ends of rear water cavity 28.It is provided with cooling chamber 16 afterwards and be sleeved on axle 6 Disc 17, disc 17 is held out against on axle 6 by bearing spacer 18 the inner, and bearing spacer 18 outer end is fixedly connected angular contact ball Bearing 21.

It is provided with cooling water in front water cavity 27 and rear water cavity 28, can be by the heat of the lubricating oil in front oil sump and rear oil sump 32 Quickly take away, but also quickly can be taken away by the heat that bearing is produced by the conduction of front cooling chamber 3 and rear cooling chamber 16, The heat that bearing produces is made quickly to distribute it is ensured that bearing is in a good ring by water cooling on the basis of natural cooling Run in border, improve the performance and used life of bearing, reduce the frequency of maintenance of water ring compressor；Front water cavity 27 and Hou Shui The top in chamber 28 all disconnects, and water inlet 30 is connected with the two ends of front water cavity 27 and rear water cavity 28 respectively with outlet 31, thus Ensure that the water in front water cavity 27 and rear water cavity 28 remains circulation, and then ensure the water in front water cavity 27 and rear water cavity 28 Temperature relatively low, thus preferably quickly taking away the heat that bearing produces.

Specifically：As shown in figs. 34：The annular that water cavity 28 disconnects for top afterwards, the water inlet 30 of rear water cavity 28 is arranged On termination on the left of rear water cavity 28, the outlet 31 of rear water cavity 28 is arranged on the termination on rear water cavity 28 right side, due to outlet 31 are arranged on top, and therefore, it is possible to be full of water in water cavity after ensureing 28, water inlet 30 and outlet 31 are arranged at rear water cavity 28 On termination, so that the water in water cavity 28 after entirely is in recurrent state all the time.The outside of water cavity 28 is provided with multiple middle parts afterwards The resigning portion of recessed arc-shaped, thus be the screwed hole resigning for stationary positioned bearing block 19.

The structure of front water cavity 27 is identical with the structure of rear water cavity 28, the annular also disconnecting for top, and front water cavity 27 is intake Mouth 30 and outlet 31 are also set, respectively on two terminations of front water cavity 27, because outlet 31 is arranged on top, therefore can It is full of water, water inlet 30 and outlet 31 are arranged on front water cavity 27 termination in water cavity 27 before enough guarantees, so that before whole Water in water cavity 27 is in recurrent state all the time.The outside of front water cavity 27 is provided with the resigning portion of the arc-shaped of multiple middle parts indent, Thus being the screwed hole resigning for stationary positioned bearing block 19.

As shown in Figure 1：Left end is the front end of the pump housing 12, and right-hand member is the rear end of the pump housing 12.The right side of the pump housing 12 is cold after being provided with But room 16, rear cooling chamber 16 is the rear coolant jacket 161 of annular, and the left end of rear coolant jacket 161 is single-row by rear end cap 15 side Cylinder roller bearing 22 is pressed in the bearing block 2 of rear end cap 15 side, and the right-hand member of rear coolant jacket 161 is led to positioning bearing seat 19 Cross bolt to be fixedly connected.The bottom of coolant jacket 161 is provided with rear oil sump 32 afterwards, and the bottom of this single row roller bearing 22 is immersed in Afterwards in the lubricating oil in oil sump 32, thus being lubricated to it.

The left side of the pump housing 12 is provided with coolant jacket 301 before front cooling chamber 3, and front cooling chamber 3 is coolant jacket 301 before annular, front The single row roller bearing 22 of drive end bearing bracket 1 side is pressed in the bearing block 2 of drive end bearing bracket 1 side the right-hand member of coolant jacket 301, The left end of front coolant jacket 301 is bolted to connection with front cooling chamber cap 5.The bottom of front coolant jacket 301 is provided with front oil sump, front The bottom of the single row roller bearing 22 of end cap 1 side is immersed in the lubricating oil in front oil sump, thus being lubricated to it.

Water cavity 28 is arranged around rear coolant jacket 161 and positioning bearing seat 19 afterwards.The axial length of water cavity 28 bottom is less than afterwards The axial length of middle and upper part, thus step down for rear oil sump 32, on the left of rear water cavity 28 middle and upper part on rear coolant jacket 161 radially Thickness is less than right side thickness radially, and the axial length of the rear water cavity 28 being located on rear coolant jacket 161 is less than rear coolant jacket 161 length vertically.The rear water cavity 28 being arranged on positioning bearing seat 19 thickness radially be arranged on rear coolant jacket 161 The rear water cavity 28 on right side thickness radially is equal.The water inlet 30 of water cavity 28 and outlet 31 are arranged at rear coolant jacket afterwards On 161, and radially middle part connects with rear water cavity 28 water inlet 30 and the lower end of outlet 31.The cooling water on water cavity 28 top afterwards The heat that single row roller bearing 22 is produced is taken away in time by the transmission of rear coolant jacket 161, and the bottom of rear water cavity 28 will The heat of the lubricating oil in oil sump 32 is taken away in time such that it is able to quickly single row roller bearing 22 is carried out with cooling fall afterwards Temperature.

Front water cavity 27 is arranged around front coolant jacket 301 and front cooling chamber cap 5.The axial length of front water cavity 27 bottom is less than upper The axial length in portion, thus stepping down for front oil sump, on the right side of front water cavity 27 middle and upper part on front coolant jacket 301, thickness radially is little In left side thickness radially, and the axial length of the front water cavity 27 being located on front coolant jacket 301 is less than front coolant jacket 301 along axle To length.Cool down the thickness radially of the front water cavity 27 on chamber cap 5 before being arranged on and be arranged on before front coolant jacket 301 left side Water cavity 27 thickness radially is equal.The water inlet 30 of front water cavity 27 and outlet 31 are arranged on front coolant jacket 301, and enter Radially middle part connects with front water cavity 27 with the lower end of outlet 31 at the mouth of a river 30.Fore bearing is produced by the cooling water on front water cavity 27 top Raw heat is taken away in time by the transmission of front coolant jacket 301, and the bottom of front water cavity 27 is by the heat of the lubricating oil in front oil sump Take away in time such that it is able to quickly cool to fore bearing.

Front water cavity 27 and rear water cavity 28 thickness radially is according to front cooling chamber 3 and rear cooling chamber 16 and front cooling chamber cap 5th, the thickness setting of positioning bearing seat 19, that is, do not interfere with front cooling chamber 3 and rear cooling chamber 16 and front cooling chamber cap 5, positioning The intensity of bearing block 19, ensures the volume of front water cavity 27 and rear water cavity 28 again, so that the water in front water cavity 27 and rear water cavity 28 Enough, it is to avoid the water yield is very few to cause water temperature rising too fast, thus affecting to radiate.

As shown in Figure 1：Axial positioning mechanism includes positioning bearing seat 19, positioning bearing gland 20, angular contact ball bearing 21 With locking nut 29, positioning bearing seat 19 is sleeved on the end of axle 6, and its inner face is fixedly connected rear cooling chamber 16, its outer end Face is fixedly connected positioning bearing gland 20, and angular contact ball bearing 21 is sleeved on axle 6 by positioning bearing seat 19 and outer end leads to Cross locking nut 29 to fasten.It is provided with angular contact ball axle afterwards between the axle 6 of coolant jacket 161 and positioning bearing seat 19 and water ring compressor Hold 21, be provided with sealing ring 33 between rear coolant jacket 161 and the outer wall of angular contact ball bearing 21, sealing ring 33 is prevented from rear water In oil sump 32 after water entrance in chamber 28.

Referring to the drawings 7 and 8：Impeller 13 is provided only with one, the axis setting of the axis runout pump housing 12 of impeller 13.Impeller 13 Gap between both sides and front distribution plate 11 and rear distribution plate 14 is 0.0005～0.0015 times of impeller 13 diameter.Impeller 13 Diameter D be 200～1000mm, the width B of impeller 13 is 60～700mm, and hub diameter d is 0.4～0.6D, wheel hub angle, θ For 3～8 °, interior arc radius R1 of the blade 131 of impeller 13 are 0.15～0.2D, outer arc radius R2 of blade 131 are 0.2～ 0.3D, blade 131 inner arc center of circle place circular diameter D1 are 0.8～0.9D, and the outer arc center of circle place circular diameter D2 of blade 131 is 0.75～0.85D, the inclination alpha of blade 131 root is 3～8 °, and blade 131 quantity is 17～23.

Specifically, example one：The diameter D of impeller 13 is 250mm, and the width B of impeller 13 is 75mm, and hub diameter d is 125mm, 0.5D, θ are 4 °, and interior arc radius R1 of blade 131 are 44mm, 0.176D, and outer arc radius R2 of blade 131 are 59mm, 0.236D, the inner arc center of circle place circular diameter D1 of blade 131 is 205mm, 0.82D, the outer arc center of circle place circular diameter of blade 131 D2 is 197.5mm, 0.79D, and the inclination alpha of blade 131 root is 5 °, and blade 131 quantity is 18, between impeller 13 and distribution plate Gap be 0.3mm, 0.0012D, end cap width 413mm, high 420mm.

Example two：The diameter D of impeller 13 is 500mm, and the width B of impeller 13 is 200mm, and hub diameter d is 256mm, 0.512D, θ are 4 °, and interior arc radius R1 of blade 131 are 88mm, 0.176D, and outer arc radius R2 of blade 131 are 118mm, 0.236D, the inner arc center of circle place circular diameter D1 of blade 131 is 410mm, 0.2D, the outer arc center of circle place circular diameter of blade 131 D2 is 395mm, 0.79D, and the inclination alpha of blade 131 root is 5 °, and blade 131 quantity is 18, between impeller 13 and distribution plate Gap is 0.4mm, 0.0008D, end cap width 779.5mm, high 770mm.

Example three：The diameter D of impeller 13 is 760mm, and the width B of impeller 13 is 200mm, and hub diameter d is 382mm, 0.5D, θ are 5 °, and interior arc radius R1 of blade 131 are 133mm, 0.175D, and outer arc radius R2 of blade 131 are 188mm, 0.247D, the inner arc center of circle place circular diameter D1 of blade 131 is 625mm, 0.822D, and the circle that the outer arc center of circle is located of blade 131 is straight Footpath D2 is 600mm, 0.789D, and the inclination alpha of blade 131 root is 5 °, and blade 131 quantity is 20, impeller 13 and distribution plate it Between gap be 0.5mm, 0.00065D, end cap width 1280mm, high 1350mm.

Referring to the drawings 9～12：Bearing is single row roller bearing 22, and single row roller bearing 22 side is respectively equipped with It is sleeved on the oil sealing 9 on axle 6, oil sealing 9 includes medium ring 901, internal ring 904 and outer shroud 903, medium ring 901 end face interference is arranged on On outer shroud 903, internal ring 904 floating mount in the inside of medium ring 901 and outer shroud 903, the outer ring of medium ring 901 and internal ring 904 interior Circle is respectively equipped with sealing device, and medium ring 901 is provided with refluxing opening 906, and refluxing opening 906 connects the inside of medium ring 901 and outer shroud 903 Space；Sealing device is sealing ring, the inner ring of the outer ring of medium ring 901 and internal ring 904 be respectively equipped with install sealing ring annular close Sealing groove, the seal groove on the inner ring of the outer ring of medium ring 901 and internal ring 904 is respectively at least provided with one group.

Internal ring 904 excircle is provided with annular groove 907.Outer shroud 903 middle part side is provided with sewage draining exit 908.During work, such as Shown in figure, it is arranged on single row roller bearing 22 side, is sealed by medium ring sealing ring 902 and inner ring seal circle 905, prevent Oil in oil sump spills in equipment operation.When internal ring 904 rotates with axle 6, the groove 907 on internal ring 904 can be in outer shroud Vane together with being formed in inner space between 903 with medium ring 901, this vane can stop the oil leakage of oil sump.When extraneous miscellaneous When the gap that matter such as oil, water etc. is passed through between outer shroud 903 and axle 6 enters oil sealing 9, impurity can be by outer shroud 903 middle part setting Sewage draining exit 908 is discharged, and prevents foreign object from entering in oil sump.Meanwhile, when equipment runs, due to single row roller bearing 22 Rotation the problems such as, the oil of oil sump can be splashed on the oil sealing 9 of water ring compressor, due to medium ring sealing ring 902 and inner ring seal The dual sealing functions of circle 905, lubricating oil can be back in oil sump again by refluxing opening 906.

Referring to the drawings 13～15:Drive end bearing bracket 1 and rear end cap 15 all include the air inlet of setting on end cap body and end cap body Mouth 101 and air vent 104, air inlet 101 is arranged on drive end bearing bracket body 110 and the surface of rear end cap body 151, air vent 104 are arranged on drive end bearing bracket body 110 and rear end cap body 151 middle part side, under drive end bearing bracket body 110 and rear end cap body 151 Portion side is provided with working solution import 103, and for emptying end cap and the emptier of the pump housing 12 internal liquid, end cap is originally external Edge is provided with multiple hangers, arranges multiple installing holes 102 and hole for hoist 7 by hanger.Emptier includes pump housing evacuation port 105 He End cap evacuation port 106, pump housing evacuation port 105 is arranged on drive end bearing bracket body 110 and the positive bottom of rear end cap body 151 end face, end Lid evacuation port 106 is arranged on pump housing evacuation port 105 side.The height of the end face of drive end bearing bracket 1 and rear end cap 15 be 350～ 2000mm, width is 400～1800mm.

Emptier includes pump housing evacuation port 105 and end cap evacuation port 106, and pump housing evacuation port 105 is arranged on drive end bearing bracket originally Body 110 or the positive bottom of rear end cap body 151 end face, end cap evacuation port 106 is arranged on pump housing evacuation port 105 side.Drive end bearing bracket The outer rim of body 110 and rear end cap body 151 is provided with multiple hangers, arranges multiple installing holes 102 by hanger.Installing hole 102 Annular is distributed on drive end bearing bracket body 110 and rear end cap body 151 outer rim.Drive end bearing bracket body 110 and rear end cap body 151 both sides pair Claim to be provided with two groups of holes for hoist 7.Drive end bearing bracket body 110 and rear end cap body 151 end face are respectively equipped with the bearing bracket stand 107 of evagination, It is provided with leakage evacuation port 108 between bearing bracket stand 107 and end cap body.End cap body bottom portion is provided with lower margin bearing 111, lower margin bearing 111 are provided with lower margin adjustment bolt hole 109.

Wherein air inlet 101 is in the surface of end cap；Air vent 104 in the side of end cap, when going wrong in pump chamber, Handss and instrument can be put in by air vent 104 and change easily worn part；Installing hole 102 is distributed in the surrounding of end cap；Working solution Import 103 is relative with gas outlet in the side of end cap；Pump housing evacuation port 105 is in the middle lower position of end cap, compressor shutdown When, in the pump housing 12, liquid can be flowed out by pump housing evacuation port 105；End cap evacuation port 106 on the side of pump housing evacuation port 105, With air vent 104 in the same side, during compressor shutdown, the liquid of end cap cavity space can be flowed out by end cap evacuation port 106；Hang What dress hole 7 was symmetrical is distributed in air inlet 101 both sides, and whole machine and end cap can be lifted, if direct hoisting axis bolster 107, may cause to damage to the internal structure of compressor because of the deformation of bearing bracket stand 107.This liquid rotary compressor end cap is installed At the two ends of compressor, linked together with distribution plate, the pump housing 12 by turnbuckle 10.

Operation principle of the present utility model is as shown in figure 1, being arranged in the pump housing 12, when impeller 13 up time of impeller 13 bias Pin direction rotates, and liquid is thrown away to surrounding by the effect of centrifugal force, forms rotation pendular ring between the pump housing 12 inwall and impeller 13, Pendular ring inner surface is departed from impeller 13 wheel hub in impeller 13 bottom, is formed many little between the blade 131 of impeller 13 and pendular ring Space, during front half way around (0 °～180 °), this space is gradually increased, reduced pressure, forms suction chamber, and gas is inhaled Enter, blade 131 does work to pendular ring simultaneously, pendular ring kinetic energy increases；During rear half way around (180 °～360 °), boundary in pendular ring Move closer to wheel hub, the space between blade 131 is gradually reduced.Rotation pendular ring compressed gas acting, pressure rise, form compression Chamber, when being compressed to required pressure, gas is discharged in gas-liquid separator in company with partially liq, carries out gas-liquid separation.Leaf Wheel 13 continuously ceaselessly rotates, and compressor is just continuously drawn into and discharges compressed gas.

The above, be only preferred embodiment of the present utility model, is not to make other forms to this utility model Restriction, any those skilled in the art are changed or are modified as being equal to possibly also with the technology contents of the disclosure above The Equivalent embodiments of change.But every without departing from technical solutions of the utility model content, real according to technology of the present utility model Any simple modification, equivalent variations and remodeling that confrontation above example is made, still fall within the guarantor of technical solutions of the utility model Shield scope.

Claims (10)

1. a kind of liquid rotary compressor, including the drive end bearing bracket (1) being sleeved on axle (6), the pump housing (12), impeller (13) and rear end cap (15), impeller (13) passes through eccentric being arranged in the pump housing (12) of axle (6), and drive end bearing bracket (1) and rear end cap (15) pass through axle respectively Hold and be arranged on axle (6), impeller (13) both sides respectively pass through front distribution plate (11) and rear distribution plate (14) connection drive end bearing bracket (1) and Rear end cap (15) it is characterised in that：Described impeller (13) is provided with one, impeller (13) both sides and front distribution plate (11) and rear point Gap between matching board (14) is 0.0005～0.0015 times of impeller (13) diameter, drive end bearing bracket (1) and rear end cap (15) It is respectively equipped with double mechanical seal (23), described front distribution plate (11), rear distribution plate between inner chamber and described axle (6) (14) it is mounted on automatic pressure regulating device.

2. a kind of liquid rotary compressor according to claim 1 it is characterised in that：Described drive end bearing bracket (1) and rear end cap (15) outside is respectively equipped with front cooling body and aftercooler structure, and the two ends of described front cooling body and aftercooler structure are divided Respective water inlet (30) and outlet (31) are not set.

3. a kind of liquid rotary compressor according to claim 1 it is characterised in that：The diameter D of described impeller (13) is 200 ～1000mm, the width B of impeller (13) is 60～700mm.

4. a kind of liquid rotary compressor according to claim 1 it is characterised in that：Pressure at expulsion is 0.1～0.9Mpa G, Tolerance is 3～200m³/min.

5. a kind of liquid rotary compressor according to claim 1 or 3 it is characterised in that：The wheel hub of described impeller (13) is straight Footpath d is 0.4～0.6D, and wheel hub angle, θ is 3～8 °.

6. a kind of liquid rotary compressor according to claim 1 or 3 it is characterised in that：The blade of described impeller (13) (131) interior arc radius R1 are 0.15～0.2D, and outer arc radius R2 of blade (131) are 0.2～0.3D, blade (131) interior Arc center of circle place circular diameter D1 is 0.8～0.9D, and the outer arc center of circle place circular diameter D2 of blade (131) is 0.75～0.85D, leaf The inclination alpha of piece (131) root is 3～8 °, and blade (131) quantity is 17～23.

7. a kind of liquid rotary compressor according to claim 1 it is characterised in that：Described bearing is single-row cylinder roller axle Hold (22), single row roller bearing (22) side is respectively equipped with the oil sealing (9) being sleeved on axle (6), oil sealing (9) includes medium ring (901), internal ring (904) and outer shroud (903), medium ring (901) end face interference is arranged on outer shroud (903), described internal ring (904) Floating mount is respectively equipped with the inside of medium ring (901) and outer shroud (903), the inner ring of the outer ring of medium ring (901) and internal ring (904) Sealing device, medium ring (901) is provided with refluxing opening (906), and refluxing opening (906) connects the inside of medium ring (901) and outer shroud (903) Space；Sealing device is sealing ring, and the inner ring of the outer ring of medium ring (901) and internal ring (904) is respectively equipped with the ring installing sealing ring Shape seal groove, the seal groove on the inner ring of the outer ring of medium ring (901) and internal ring (904) is respectively at least provided with one group.

8. a kind of liquid rotary compressor according to claim 2 it is characterised in that：Described front cooling body includes front cooling Room (3), front cooling chamber cap (5) and front water cavity (27), front cooling chamber (3) inner face is fixedly connected outside described drive end bearing bracket (1) Bearing block (2), outer face be fixed with before cooling chamber cap (5), is provided around front cooling chamber (3) cavity inside front cooling chamber (3) The front water cavity (27) of setting；

Aftercooler structure includes rear cooling chamber (16) and rear water cavity (28), is provided around rear cooling chamber (16) in rear cooling chamber (16) The rear water cavity (28) of cavity setting, rear cooling chamber (16) inner face is fixedly connected the bearing block outside described rear end cap (15) (2), rear cooling chamber (16) outer face is provided with axial positioning mechanism, cooling chamber (16) outer end after being sealed by axial positioning mechanism Face；

The top of described front water cavity (27) and rear water cavity (28) all disconnects setting, and in front water cavity (27) and rear water cavity (28) Two ends are respectively provided with respective water inlet (30) and outlet (31).

9. a kind of liquid rotary compressor according to claim 8 it is characterised in that：Described axial positioning mechanism includes positioning Bearing block (19), positioning bearing gland (20), angular contact ball bearing (21) and locking nut (29), positioning bearing seat (19) is set with In the end of axle (6), and its inner face is fixedly connected described rear cooling chamber (16), and its outer face is fixedly connected locating shaft pressure-bearing Lid (20), angular contact ball bearing (21) is sleeved on axle (6) above by positioning bearing seat (19) and locking nut is passed through in outer end (29) fasten.

10. a kind of liquid rotary compressor according to claim 9 it is characterised in that：It is provided with described rear cooling chamber (16) It is sleeved on the disc (17) on axle (6), disc (17) is held out against on axle (6) by bearing spacer (18) the inner, bearing spacer (18) outer end is fixedly connected described angular contact ball bearing (21).