CN116696728A - Bidirectional non-return diaphragm pump with expansion pressure relief structure and operation method thereof - Google Patents
Bidirectional non-return diaphragm pump with expansion pressure relief structure and operation method thereof Download PDFInfo
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- CN116696728A CN116696728A CN202310710043.8A CN202310710043A CN116696728A CN 116696728 A CN116696728 A CN 116696728A CN 202310710043 A CN202310710043 A CN 202310710043A CN 116696728 A CN116696728 A CN 116696728A
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- pressure
- pressure relief
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000002457 bidirectional effect Effects 0.000 title description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 345
- 238000007789 sealing Methods 0.000 claims abstract description 85
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 238000003860 storage Methods 0.000 claims description 49
- 238000004891 communication Methods 0.000 claims description 26
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 230000009471 action Effects 0.000 claims description 15
- 230000006837 decompression Effects 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 7
- 230000000717 retained effect Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0081—Special features systems, control, safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/06—Venting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a two-way non-return diaphragm pump with an expansion pressure relief structure and an operation method thereof, wherein a liquid return hole opposite to a drainage flow channel and a water inlet cavity is formed on a non-return seat of the diaphragm pump, a liquid return pipe extending into the water inlet cavity is formed on the periphery of the liquid return hole, a pressure relief sleeve sleeved on the liquid return pipe is formed on a lower sealing gasket, the water outlet end of the liquid return pipe is sealed by the pressure relief sleeve, a pressure relief opening is formed on the pressure relief sleeve, and the pressure relief opening is staggered with the water outlet end of the liquid return pipe.
Description
Technical Field
The invention relates to the technical field of diaphragm pumps, in particular to a bidirectional non-return diaphragm pump with an expansion pressure relief structure and an operation method thereof.
Background
The diaphragm pump adopts a diaphragm type structure, realizes common pump types for sucking and discharging liquid by compressing and loosening the diaphragm, has self-priming capability, can convey various mediums such as high concentration, high viscosity, easy volatilization, strong corrosiveness, particulate matters and the like, and is widely applied to various industries such as chemical industry, environmental protection, food, medicine and the like.
The traditional diaphragm pump is often installed in the water outlet channel department and installs the relief valve additional when installing, carry out the pressure release protection, when the water outlet channel is stopped up or can't normally drain because of other reasons, reduce the water pressure of sealing of hydrops in the water outlet channel, avoid sealing the continuous rising of water pressure, protection motor and front end accessory, the produced problem of mode of setting up more than one is at first increased the cost that has increased whole fluid delivery system with the independent relief valve of increasing, under the circumstances of mass application, cause manufacturing cost to increase greatly, secondly, owing to increased the step of installing the relief valve for the installation procedure is consuming time prolonged, the degree of difficulty increases, influence whole fluid delivery system's installation effectiveness, the relief valve still occupation space at last, increase the product volume of configuration.
To this, chinese patent with publication No. CN216008837U, the patent name is "miniature diaphragm pump with pressure release structure" discloses a novel diaphragm pump, its diaphragm pump of describing includes the base, the baffle, upper cover and pipe fitting, be provided with the water cavity between base and the baffle, be provided with inlet tube and outlet pipe on the upper cover, the both ends of pipe fitting respectively with the inner wall butt cooperation of upper cover and baffle, and separate into first lumen and second lumen between pipe fitting and the upper cover, the one end of first lumen and second lumen can communicate outlet pipe and inlet tube respectively, the water cavity is all connected to the other end of first lumen and second lumen, be provided with elastic ring and a plurality of relief holes on the pipe fitting, the relief hole can communicate first lumen and second lumen, and a plurality of relief holes circumference are arranged on the perisporium of pipe fitting, the elastic ring cup joints on the pipe fitting and cover a plurality of relief holes, the pipe fitting includes annular concave part, a plurality of relief holes all set up on annular concave part, the elastic ring cup joints on annular concave part, be provided with first sealing washer between pipe fitting one end and the baffle, be provided with between upper cover and the second sealing washer.
The diaphragm pump of above-mentioned structure utilizes elastic ring suit to cover the relief hole on the pipe fitting, utilize elastic force that elastic ring deformation produced to make the relief hole obtain closely sealed, when the water pressure of sealing water in the outlet pipe exceeded the elastic force that the elastic ring applyed, clearance appears between elastic ring and the relief hole, water in the outlet pipe can be discharged to first lumen and second lumen from the relief hole this moment, realize the pressure release, be different from traditional diaphragm pump is that this diaphragm pump is itself attached relief structure, need not to install extra relief valve and carry out the pressure release, so the product volume of disposition can be littleer, and simplify the relief valve installation flow, and the installation degree of difficulty that produces because of installing the relief valve, but its still exists the problem lie in the elastic ring, the pipe fitting is not the structure that traditional diaphragm pump had, belong to newly-increased the accessory, cause its manufacturing cost to be greater than traditional diaphragm pump, also can cause manufacturing cost's increase by a wide margin when big batch production, and above-mentioned newly-increased accessory makes this diaphragm pump carry out the change by a wide margin on traditional diaphragm pump's structure basis, corresponding change that causes the change of assembly degree of difficulty and obviously causes in traditional diaphragm pump and causes the different degree of complexity of assembly flow.
Disclosure of Invention
Aiming at the situation, in order to overcome the problems that the diaphragm pump with the pressure relief structure is added with a plurality of accessories compared with the traditional diaphragm pump, so that the production cost is higher than that of the traditional diaphragm pump, and the change of the assembly process is caused to be obviously different from that of the traditional diaphragm pump, so that the complexity and difficulty of the assembly process are improved, the invention aims to provide the diaphragm pump with the pressure relief structure on the basis of not adding additional accessories, so that the production cost is greatly optimized, the assembly process is not changed, and the complexity and difficulty of the assembly process are prevented from being increased.
In order to achieve the above object, the technical solution of the present invention is:
the utility model provides a two-way non-return diaphragm pump with inflation pressure release structure, it includes the pump body, drive assembly and motor, the pump body includes the inlet and outlet water lid, go up sealed pad, non-return seat, down sealed pad, the check valve that intakes, go out the water diaphragm, valve body fixing base, go up mount and mount down, drive assembly has the water storage chamber, it locates in mount and the mount down, motor locates mount one side and is connected with drive assembly down, set up inlet water chamber and drainage chamber with the water storage chamber intercommunication on the valve body fixing base, the inlet water check valve, go out the water diaphragm and locate in the inlet water chamber, in the drainage chamber respectively, the inlet water runner and the drainage runner with go up sealed pad, be formed with on the non-return seat and the drainage runner with inlet and the inlet water chamber relative return hole, be formed with the return pipe that extends to in the inlet water chamber in the circumference of return hole, be formed with the pressure release cover on the lower sealed pad, the outlet end of return pipe is closed by the pressure release cover, set up the pressure release mouth with the pressure release mouth on the pressure release cover, the dislocation end of return pipe.
Preferably, the water outlet end of the liquid return pipe is positioned on the side wall of the liquid return pipe, and the pressure relief opening is positioned at the bottom of the pressure relief sleeve.
Preferably, the water inlet and outlet cover is provided with a communication channel which is parallel to and communicated with the water inlet channel, and the communication channel is vertically opposite to the water storage cavity and the water discharge cavity.
Preferably, a pagoda spring is arranged between the communicating channel of the water inlet and outlet cover and the upper sealing gasket.
Preferably, the water inlet and outlet cover is provided with a positioning clamping groove in the communication channel, the upper sealing gasket is provided with a positioning convex column opposite to the positioning clamping groove, one end of the pagoda spring is inserted into the positioning clamping groove, and the other end of the pagoda spring is sleeved on the positioning convex column.
Preferably, the upper sealing gasket is provided with a water sealing groove opposite to the water draining flow passage of the non-return seat, the non-return seat is provided with a lower check ring annularly distributed on the circumference of the water draining flow passage, and the upper sealing gasket is sleeved on the lower check ring through the water sealing groove.
Preferably, an upper check ring is formed in the water sealing groove, and the upper check ring extends into the lower check ring to be in plug-in fit with the lower check ring.
Preferably, the inner diameter of the water sealing groove increases gradually from the closed end to the open end, the inner diameter of the lower check ring increases gradually from one side away from the water sealing groove to the other side, the outer wall of the lower check ring is abutted on the side wall of the water sealing groove, and the upper check ring is abutted on the inner wall of the lower check ring.
Preferably, the driving assembly comprises an eccentric wheel, a needle shaft, a swinging frame and a compression bowl, wherein the eccentric wheel is eccentrically connected with the output end of the motor, the needle shaft is obliquely arranged on the eccentric wheel, the swinging frame is arranged on the needle shaft and connected with a gas drum of the compression bowl, the water storage cavity is formed on the compression bowl and is equidistant with the gas drum, and the compression bowl is arranged on the upper fixing frame.
The operation method of the bidirectional non-return diaphragm pump with the expansion pressure relief structure comprises the following steps:
and (3) water inlet:
the motor is operated to eccentrically rotate the driving assembly, the driving assembly drives each air drum of the compression bowl to sequentially stretch, the corresponding water storage cavity is expanded under the action of the stretching air drum, negative pressure is formed in the water storage cavity, the water inlet one-way valve is moved to enable the water storage cavity to be communicated with the water inlet cavity under the action of the negative pressure, water is pumped in from the water inlet flow channel of the water inlet and outlet cover under the action of the negative pressure, water flowing into the water inlet flow channel of the water inlet and outlet cover flows into the communication channel, the rest of water sequentially passes through the water inlet flow channels on the upper sealing gasket, the non-return seat and the lower sealing gasket to enter the water inlet cavity, the water inlet cavity enters the liquid storage cavity, and the communication channel filled with water enables the pressure on two sides of the water outlet membrane in the water outlet cavity to be equal;
pumping water:
the continuous rotation of the output end of the motor enables each air drum of the driving assembly to drive the compression bowl to retract sequentially, the corresponding water storage cavity is contracted under the action of the retracting air drum, the inner wall of the contracted water storage cavity applies pressure to water in the water storage cavity, the water pressure generated by the water acts on one side of the water outlet diaphragm, along with the increase of the water pressure, when the pressure value exceeds the other side pressure of the water outlet diaphragm, the water outlet diaphragm moves to compress the pagoda spring, the water storage cavity is communicated with the water discharge cavity, water enters the water discharge cavity from the water storage cavity, then sequentially flows through the lower sealing gasket, the upper sealing gasket and the water discharge flow passage on the non-return seat, and finally the water discharge flow passage pump of the water inlet and outlet cover is outward.
And (3) pressure relief protection:
when the drain flow channel of the water inlet and outlet cover is blocked to cause that water cannot be discharged, water pressure generated by water retained in the drain flow channel acts on the position of the lower sealing gasket pressure relief sleeve opposite to the water outlet end of the liquid return pipe, when the pressure value exceeds a certain value, the pressure relief sleeve expands outwards, a gap is generated between the pressure relief sleeve and the liquid return pipe, the water outlet end of the liquid return pipe is communicated with the pressure relief opening through the generated gap, water entering the liquid return pipe is discharged into the water inlet cavity from the pressure relief opening after passing through the water outlet end of the liquid return pipe, and the water pressure acting on the pressure relief sleeve is reduced.
Compared with the prior art, the invention has the advantages that:
the invention can realize pressure relief protection by directly improving the structures of the upper sealing gasket and the non-return seat of the existing diaphragm pump without adding additional accessories, so that the production cost is not increased under the condition of mass production, and during assembly, the integral structure of the diaphragm pump is not greatly changed relative to the traditional diaphragm pump, so that the assembly forming can be realized by the original assembly process, the complexity and the difficulty of the assembly process are effectively avoided, in addition, the pressure relief sleeve is expanded and relieved when the water pressure is increased by utilizing the characteristics of the rubber pressure relief sleeve, and the pressure is re-wrapped on the liquid return pipe by utilizing the elasticity when the pressure is reduced to be smaller than the elasticity of the return deformation of the pressure relief sleeve, so that the communication among the liquid return hole, the liquid return pipe and the water inlet cavity can be automatically switched, and the invention also has the advantage of ingenious design structure.
Drawings
FIG. 1 is a schematic view of the overall structure of a diaphragm pump of the present invention;
FIG. 2 is a schematic view of the overall structure of the inlet and outlet covers of the diaphragm pump of the present invention;
FIG. 3 is a schematic view of the overall structure of the gasket of the diaphragm pump of the present invention;
FIG. 4 is a schematic view of the overall structure of the gasket of the present invention in another view;
FIG. 5 is a schematic view of the overall structure of the check seat of the diaphragm pump of the present invention;
FIG. 6 is a schematic view of the overall structure of the check seat of the diaphragm pump according to the present invention from another perspective;
FIG. 7 is a schematic view of the overall structure of the lower gasket of the diaphragm pump of the present invention;
FIG. 8 is a schematic diagram of the overall structure of the valve body holder of the diaphragm pump of the present invention;
FIG. 9 is a schematic exploded view of the diaphragm pump drive assembly of the present invention;
FIG. 10 is a schematic diagram of the overall structure of the membrane pump after the separation of the water inlet and outlet covers (arrows indicate the flow direction of water in the pressure relief protection);
FIG. 11 is a schematic diagram of the overall structure of the membrane pump according to the present invention from another perspective after separation of the water inlet and outlet cover (arrows indicate the direction of water flow during pressure relief protection);
FIG. 12 is a schematic view of the overall structure of the diaphragm pump after the separation of the water inlet and outlet cover, the upper gasket, the non-return seat and the lower gasket (arrows indicate the flow direction of water in the pressure relief protection);
fig. 13 is a schematic cross-sectional structure of the diaphragm pump of the present invention.
As shown in the figure:
a1, a water inlet flow channel; a2, draining flow passage; 1. a motor; 2. a water inlet and outlet cover; 201. a communication passage; 201a, positioning clamping grooves; 3. an upper gasket; 301. positioning the convex column; 302. a water sealing groove; 303. an upper retainer ring; 4. a non-return seat; 401. a liquid return hole; 402. a liquid return pipe; 403. a lower retainer ring; 5. a lower gasket; 501. a pressure release sleeve; 501a, a pressure relief port; 6. a water inlet one-way valve; 7. a water outlet membrane; 8. a valve body fixing seat; 801. a water inlet cavity; 802. a drainage cavity; 9. an upper fixing frame; 10. a lower fixing frame; 11. a pagoda spring; 12. an eccentric wheel; 13. a needle shaft; 14. a swing frame; 15. a compression bowl; 1501. a water storage chamber; 1502. and (5) air drum.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on directions or positional relationships shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of description, and are not intended to indicate or imply that the directions are necessarily specific directions and specific direction configurations and operations, and thus should not be construed as limiting the present invention.
Here, arrows in fig. 13 indicate the flow direction of the liquid at the time of liquid intake.
As shown in fig. 1 to 13, the present invention firstly relates to a bidirectional non-return diaphragm pump with an expansion and decompression structure, which comprises a pump body, a driving component and a motor 1, wherein the pump body comprises a water inlet and outlet cover 2, an upper sealing gasket 3, a non-return seat 4, a lower sealing gasket 5, a water inlet one-way valve 6, a water outlet diaphragm 7, a valve body fixing seat 8, an upper fixing frame 9, a lower fixing frame 10 and other structures consistent with the existing diaphragm pump, the water inlet and outlet cover 2, the non-return seat 4, the valve body fixing seat 8, the upper fixing frame 9 and the lower fixing frame 10 are sequentially connected from top to bottom, the upper sealing gasket 3 is arranged between the water inlet and outlet cover 2 and the non-return seat 4, the lower sealing gasket 5 is arranged between the non-return seat 4 and the valve body fixing seat 8, the upper sealing gasket 3 and the lower sealing gasket 5 are made of rubber materials, the water inlet one-way valve 6 and the water outlet diaphragm 7 are arranged on the valve body fixing seat 8, the driving component is provided with a water storage cavity 1501 which is arranged in the upper fixing frame 9 and the lower fixing frame 10, the motor 1 is arranged at one side of the lower fixing frame 10, the output end of the motor is connected with a driving component, a water inlet cavity 801 and a water outlet cavity 802 which are communicated with a water storage cavity 1501 are arranged on a valve body fixing seat 8, the water outlet cavity 802 is arranged at the middle position of the valve body fixing seat 8, the water inlet cavity 801 is arranged around the water outlet cavity 802, a water inlet one-way valve 6 is arranged in the communication position of the water inlet cavity 801 and the water storage cavity 1501, an umbrella valve is selected as the water inlet one-way valve 6, a water outlet diaphragm 7 is arranged in the communication position of the water outlet cavity 802 and the water storage cavity 1501, the water outlet diaphragm 7 is also a one-way valve, a water inlet channel a1 and a water outlet channel a2 which are communicated with the water inlet cavity 801 and the water outlet cavity 802 are formed on an upper sealing gasket 3, a non-return seat 4 and a lower sealing gasket 5 are different from the upper sealing gasket 3, the non-return seat 4 and the lower sealing gasket 5, a water inlet pipe and a water outlet pipe are formed on the water inlet cover 2, the water inlet channel a1 and the water outlet channel a2 are formed by the inner pipe sections of the water inlet pipe and the water outlet pipe, the pressure relief sleeve 501 is formed on the lower sealing pad 5, different from the existing diaphragm pump, the pressure relief sleeve 501 is made of the same rubber material as the lower sealing pad 5, the pressure relief sleeve 501 is sleeved on the pressure relief sleeve 402 to seal the water outlet end of the pressure relief sleeve 402, the elasticity of the rubber material is utilized to tightly wrap the outside of the pressure relief sleeve 402 to form interference fit, the communication of the liquid return hole 401, the liquid return pipe 402 and the water inlet cavity 801 is blocked, a pressure relief opening 501a is arranged on the pressure relief sleeve 501, the pressure relief opening 501a is misplaced with the water outlet end of the liquid return pipe 402, namely, the extension positions of the pressure relief opening 501a and the water outlet end of the liquid return pipe 402 are not overlapped, when a water outlet flow passage a2 of the water inlet and outlet cover 2 is blocked to cause water to be unable to be discharged, water which is unable to be pumped outwards is reserved in the water outlet flow passage a2, the accumulated water flows into the liquid return hole 401 under the action of gravity and then enters the liquid return pipe 402, the generated liquid pressure acts on the inner wall of the pressure relief sleeve 501 through the water outlet end of the liquid return pipe 402, when the water pressure exceeds a certain value, the pressure relief sleeve 501 is obviously deformed to be outwards expanded and is generated between the outer wall of the liquid return pipe 402, the interference fit state with the liquid return pipe 402 is relieved, the generated clearance enables the water outlet end of the liquid return pipe 402 and the pressure relief hole to be communicated, and the corresponding water outlet flow passage a2 and the water inlet cavity 801, at this time, the water retained in the drainage flow channel a2 can enter the water inlet cavity 801 through the liquid return hole 401, the liquid return pipe 402 and the pressure relief opening 501a, the water retained in the drainage flow channel a2 is reduced, the pressure in the pump is further reduced, the motor 1 and the front end fittings are protected, the pressure relief protection can be realized by directly improving the structures of the upper sealing gasket 3 and the non-return seat 4 of the existing diaphragm pump, and no additional fittings are needed, so that the production cost is not increased under the condition of mass production, and during assembly, the integral structure of the diaphragm pump is not greatly changed compared with the traditional diaphragm pump, so that the assembly process can be assembled and formed through the original assembly process, the complexity and the difficulty of the assembly process are effectively avoided, in addition, the pressure is relieved by expanding when the pressure of the rubber material pressure relief sleeve 501 is increased, and the pressure is reduced to be smaller than the elastic force of the return deformation of the pressure relief sleeve 501, the communication among the liquid return hole 401, the liquid return pipe 402 and the water inlet cavity 801 can be automatically switched by utilizing the elastic force, and the design structure is ingenious.
Further, the water outlet end of the liquid return pipe 402 is located on the side wall thereof, the pressure relief opening 501a is located at the bottom of the pressure relief sleeve 501, i.e. a L-shaped sealing position is formed between the water outlet end of the pressure relief sleeve 501 and the pressure relief opening 501a, so as to increase the tightness of the pressure relief sleeve 501 when the pressure relief sleeve 501 is sleeved on the liquid return pipe 402, and when the pressure relief sleeve 501 expands to form a gap with the outer wall of the liquid return pipe 402, the liquid accumulated in the drainage flow channel a2 flows downwards after flowing out from the water outlet end of the liquid return pipe 402 upwards until the liquid is discharged into the water inlet cavity 801 through the pressure relief opening 501 a.
Further, the water inlet and outlet cover 2 is provided with a communication channel 201 which is parallel to and penetrates through the water inlet channel a1, the communication channel 201 is vertically opposite to the water storage cavity 1501 and the water outlet cavity 802, when water is fed, part of water flowing into the water inlet channel a1 of the water inlet and outlet cover 2 firstly flows into the communication channel 201, the rest of water sequentially passes through the upper sealing gasket 3, the non-return seat 4 and the water inlet channel a1 on the lower sealing gasket 5 to enter the water inlet cavity 801, and the water inlet cavity 801 enters the liquid storage cavity of the driving assembly, as a whole, the communication channel 201, the water inlet channel a1 and the water storage cavity 1501 below jointly form a U-shaped cavity, two ends of the cavity are provided with the communication channel 201 and the water storage cavity 1501, the cavity can be regarded as an inner pipe of the communicating vessel, when water is fed or stopped, the two sides of the water outlet diaphragm 7 are pressed to be equal, the water outlet diaphragm 7 can not move under the action of the water inlet diaphragm 1501 to communicate the water outlet cavity 802 with the cavity 1501, the principle of the forward non-return is realized, and the water storage cavity is prevented from leaking in a sealed state when the water storage cavity a1 is large or the water storage cavity is prevented from flowing out of the pump.
As shown in fig. 2, 10 and 13, a pagoda spring 11 is arranged between the upper sealing gasket 3 and the communication channel 201 of the water inlet and outlet cover 2, two ends of the pagoda spring 11 are respectively abutted against the inner wall of the communication channel 201 and the upper sealing gasket 3, the elasticity of the pagoda spring 11 directly acts on the upper sealing gasket 3, the pressure of the upper sealing gasket 3 acting on the water outlet diaphragm 7 is increased, the pressure of one side of the water outlet diaphragm 7, which is close to the upper sealing gasket 3, is higher than the pressure of the other side, and further the free movement of the water outlet diaphragm 7 is better avoided when the diaphragm pump is in a non-working state, so that the overall sealing performance is further improved.
As shown in fig. 2, 3, 10 and 13, the water inlet and outlet cover 2 is formed with a positioning slot 201a in the communication channel 201, the upper sealing gasket 3 is formed with a positioning convex column 301 opposite to the positioning slot 201a, one end of the pagoda spring 11 is inserted into the positioning slot 201a, the other end is sleeved on the positioning convex column 301, based on the arrangement, the deformation direction of the pagoda spring 11 can be limited, the pagoda spring 11 is ensured to be deformed along a straight line all the time, the twisting of the pagoda spring 11 is avoided, and the service life of the pagoda spring is prolonged.
As shown in fig. 4, 5, 12 and 13, the upper gasket 3 is formed with a water sealing groove 302 opposite to the water drainage channel a2 of the non-return seat 4, the non-return seat 4 is formed with a lower retainer ring 403 circumferentially distributed on the water drainage channel, the upper gasket 3 is sleeved on the lower retainer ring 403 through the water sealing groove 302, and further is staggered and abutted against the outer wall of the lower retainer ring 403, the water drainage channel a2 of the non-return seat 4 is sealed by the closed end of the lower retainer ring 403, in this state, not only the whole sealing performance is improved, but also the water sealing groove 302 is supported by the outer wall of the lower retainer ring 403, under the condition of frequent liquid pressure for a long time, the possibility of deformation of the water sealing groove 302 of a flexible material is reduced, further good protection of the upper gasket 3 is formed, and the service life of the upper gasket 3 is prolonged.
As shown in fig. 5, 12 and 13, an upper retainer ring 303 is formed in the water sealing groove 302, the upper retainer ring 303 extends into the lower retainer ring 403 to be in plug-in fit with the lower retainer ring, and as a whole, the fit positions among the water sealing groove 302, the lower retainer ring 403 and the upper retainer ring 303 are of a labyrinth-like groove structure, so that the tightness of the upper sealing gasket 3 is further improved, and meanwhile, even if the upper sealing gasket 3 is positioned in the lower retainer ring 403, the upper retainer ring 303 is partially deformed to form a gap with the lower retainer ring 403, liquid can be blocked by the lower retainer ring 403 made of hard materials after passing through the gap, so that the deformation of the water sealing groove 302 caused by the direct action of liquid pressure on the inner wall of the outer water sealing groove 302 is avoided, and double protection is further provided for the upper sealing gasket 3.
As shown in fig. 4, 5, 12 and 13, the inner diameter of the water sealing groove 302 increases gradually from the closed end to the open end, the inner diameter of the lower retainer ring 403 increases gradually from one side away from the water sealing groove 302 to the other side, the outer wall of the lower retainer ring 403 abuts against the side wall of the water sealing groove 302, and the upper retainer ring 303 abuts against the inner wall of the lower retainer ring 403, and it is understood that, due to the above arrangement, the contact surface between the lower retainer ring 403 and the water sealing groove 302 is linear, and a deformable space is left between the upper retainer ring 303 and the inner wall of the water sealing groove 302 when the water pressure acts on the upper retainer ring 303 and the inner wall of the water sealing groove 302, so that the water sealing groove is bonded.
As shown in fig. 9 and 13, the driving assembly includes an eccentric wheel 12, a needle shaft 13, a swing frame 14 and a compression bowl 15, wherein the eccentric wheel 12, the needle shaft 13 and the swing frame 14 are all located in the upper fixing frame 9 and the lower fixing frame 10, the eccentric wheel 12 is eccentrically connected with the output end of the motor 1, the needle shaft 13 is obliquely arranged on the eccentric wheel 12, the swing frame 14 is arranged on the needle shaft 13 and is connected with an air drum 1502 of the compression bowl 15, a water storage cavity 1501 is formed on the compression bowl 15 and is equal to the air drum 1502, the compression bowl 15 is arranged on the upper fixing frame 9, when the motor 1 operates, the output end of the motor drives the eccentric wheel 12 to eccentrically rotate, the eccentric wheel 12 drives the inclined needle shaft 13 to rotate, the needle shaft 13 drives the swing frame 14 to rotate, and the swing frame 14 keeps up and down floating while rotating, so as to further drive the air drum 1502 of the compression bowl 15 to change between stretching and shrinking, and the volume of the water storage cavity 1501 correspondingly expands and contracts, and water sucking and pumping are realized.
The invention also relates to a method for operating a bi-directional non-return diaphragm pump with an expansion relief structure, with reference to fig. 1 to 13, comprising the following steps:
and (3) water inlet:
the motor 1 operates to eccentrically rotate the driving assembly, the driving assembly drives each air drum 1502 of the compression bowl 15 to sequentially stretch, the corresponding water storage cavity 1501 is expanded under the action of the stretching air drum 1502, negative pressure is formed in the water storage cavity 1501, the water inlet check valve 6 moves to enable the water storage cavity 1501 to be communicated with the water inlet cavity 801 under the action of the negative pressure, water is pumped in from the inlet flow channel of the water inlet and outlet cover 2 under the action of the negative pressure, water flowing into the water inlet flow channel a1 of the water inlet and outlet cover 2 flows into the communication channel 201, the rest water sequentially enters the water inlet cavity 801 through the water inlet flow channel a1 on the upper sealing gasket 3, the non-return seat 4 and the lower sealing gasket 5, and enters the liquid storage cavity 801, and the water inlet communication channel 201 filled with water enables the pressure on two sides of the water outlet membrane 7 in the water discharge cavity 802 to be equal;
pumping water:
the continuous rotation of the output end of the motor 1 makes the driving component drive each air drum 1502 of the compression bowl 15 to retract sequentially, the corresponding water storage cavity 1501 is contracted under the action of the retracting air drum 1502, the inner wall of the contracted water storage cavity 1501 applies pressure to water in the water storage cavity, the water pressure generated by the water acts on one side of the water outlet diaphragm 7, along with the increase of the water pressure, when the pressure value exceeds the other side pressure of the water outlet diaphragm 7, the water outlet diaphragm 7 moves to compress the pagoda spring 11, the water storage cavity 1501 is communicated with the water discharge cavity 802, water enters the water discharge cavity 802 from the water storage cavity 1501, sequentially flows through the water discharge flow passage a2 on the lower sealing pad 5, the upper sealing pad 3 and the non-return seat 4, and finally is pumped to the outside through the water discharge flow passage a2 of the water inlet and outlet cover 2.
And (3) pressure relief protection:
when the drain flow channel a2 of the water inlet and outlet cover 2 is blocked to cause that water cannot be discharged, water pressure generated by water retained in the drain flow channel a2 acts on the position of the pressure release sleeve 501 opposite to the water outlet end of the liquid return pipe 402 of the lower sealing gasket 5, when the pressure value exceeds a certain value, the pressure release sleeve 501 expands outwards, a gap is generated between the pressure release sleeve 501 and the liquid return pipe 402, the water outlet end of the liquid return pipe 402 is communicated with the pressure release opening 501a through the generated gap, and water entering the liquid return pipe 402 is discharged into the water inlet cavity 801 from the pressure release opening 501a after passing through the water outlet end of the liquid return pipe 402, so that the water pressure acting on the pressure release sleeve 501 is reduced.
The foregoing embodiments and description have been provided merely to illustrate the principles and best modes of carrying out the invention, and various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a two-way non-return diaphragm pump with inflation pressure release structure, it includes the pump body, actuating assembly and motor (1), the pump body includes water inlet and outlet cover (2), goes up sealed pad (3), non-return seat (4), down sealed pad (5), water inlet check valve (6), water outlet diaphragm (7), valve body fixing base (8), go up mount (9) and mount (10) down, actuating assembly has the water storage chamber, and it locates in mount (9) and mount (10) down, motor (1) are located down mount (10) one side and are connected with actuating assembly, set up water inlet cavity (801) and water outlet cavity (802) with the water storage cavity intercommunication on valve body fixing base (8), water inlet check valve (6), water outlet diaphragm (7) are located in water inlet cavity (801), water outlet cavity (802) respectively, be formed with on water inlet and outlet cover (2), last sealed pad (3), non-return seat (4) and the lower sealed pad (5) with water inlet channel (1) and water outlet cavity (802) intercommunication, water inlet channel (1) and water outlet (2) that water outlet cavity (802) are located, water inlet and water outlet cavity (401) are located with water outlet cavity (2) on the opposite water outlet cover (2), the periphery of return liquid hole (401) is formed with and extends to return liquid pipe (402) in inlet chamber (801), be formed with pressure release cover (501) on covering on return liquid pipe (402) on lower sealed pad (5), the play water end of return liquid pipe (402) is sealed by pressure release cover (501), pressure release mouth (501 a) have been seted up on pressure release cover (501), pressure release mouth (501 a) dislocation with the play water end of return liquid pipe (402).
2. A bi-directional check diaphragm pump with an expansion and pressure relief structure according to claim 1, characterized in that the water outlet end of the return pipe (402) is located on the side wall thereof, and the pressure relief port (501 a) is located at the bottom of the pressure relief sleeve (501).
3. The bi-directional non-return diaphragm pump with the expansion and decompression structure according to claim 1, wherein the water inlet and outlet cover (2) is provided with a communication channel (201) which is parallel to and communicated with the water inlet channel (a 1), and the communication channel (201) is vertically opposite to the water storage cavity and the water discharge cavity (802).
4. A bi-directional check diaphragm pump with an expansion and decompression structure according to claim 3, wherein a pagoda spring (11) is arranged between the communication channel (201) of the water inlet and outlet cover (2) and the upper sealing gasket (3).
5. The bi-directional non-return diaphragm pump with the expansion and decompression structure according to claim 1, wherein a positioning clamping groove (201 a) is formed in the communication channel (201) of the water inlet and outlet cover (2), a positioning convex column (301) opposite to the positioning clamping groove (201 a) is formed on the upper sealing gasket (3), one end of the pagoda spring (11) is inserted into the positioning clamping groove (201 a), and the other end of the pagoda spring is sleeved on the positioning convex column (301).
6. The bi-directional check diaphragm pump with the expansion and decompression structure according to claim 1, wherein the upper sealing gasket (3) is provided with a water sealing groove (302) opposite to the water draining flow passage (a 2) of the check seat (4), the check seat (4) is provided with a lower check ring (403) annularly distributed on the circumferential direction of the water draining flow passage (a 2), and the upper sealing gasket (3) is sleeved on the lower check ring (403) through the water sealing groove (302).
7. The bi-directional check diaphragm pump with the expansion and decompression structure according to claim 6, wherein an upper check ring (303) is formed in the water sealing groove (302), and the upper check ring (303) extends into the lower check ring (403) to be in plug-in fit with the lower check ring.
8. The bi-directional check diaphragm pump with expansion and decompression structure according to claim 7, wherein the inner diameter of the water sealing groove (302) increases gradually from the closed end to the open end, the inner diameter of the lower check ring (403) increases gradually from one side away from the water sealing groove (302) to the other side, the outer wall of the lower check ring (403) is abutted to the side wall of the water sealing groove (302), and the upper check ring (303) is abutted to the inner wall of the lower check ring (403).
9. The bi-directional non-return diaphragm pump with the expansion and decompression structure according to claim 1, wherein the driving assembly comprises an eccentric wheel (12), a needle shaft (13), a swinging frame (14) and a compression bowl (15), the eccentric wheel (12) is eccentrically connected with the output end of the motor (1), the needle shaft (13) is obliquely arranged on the eccentric wheel (12), the swinging frame (14) is arranged on the needle shaft (13) and is connected with a gas drum (1501) of the compression bowl (15), the water storage cavity is formed on the compression bowl (15) and is equal to the gas drum (1501), and the compression bowl (15) is arranged on the upper fixing frame (9) in a supporting manner.
10. A method of operating a bi-directional check diaphragm pump having an expansion relief structure according to any of claims 1 to 9, comprising the steps of:
and (3) water inlet:
the motor (1) operates to enable the driving assembly to eccentrically rotate, the driving assembly drives each air drum (1501) of the compression bowl (15) to sequentially stretch, the corresponding water storage cavity is expanded under the action of the stretching air drums (1501), negative pressure is further formed in the water storage cavity, the water storage cavity and the water inlet cavity (801) are communicated under the action of the negative pressure, water is pumped in from a water inlet channel of the water inlet cover (2) under the action of the negative pressure, water flowing into the water inlet channel (a 1) of the water inlet cover (2) flows into the communication channel (201), the rest of water sequentially passes through the upper sealing gasket (3), the non-return seat (4) and the water inlet channel (a 1) on the lower sealing gasket (5) to enter the water inlet cavity (801), and the water inlet cavity (801) enters the water storage cavity, and the water outlet membrane (7) in the water outlet cavity (802) is pressed strongly at two sides of the water outlet membrane (201) filled with water;
pumping water:
the continuous rotation of the output end of the motor (1) enables the driving assembly to drive each air drum (1501) of the compression bowl (15) to retract in sequence, the corresponding water storage cavity is contracted under the action of the retracted air drums (1501), the inner wall of the contracted water storage cavity applies pressure to water in the corresponding water storage cavity, the water pressure generated by the water acts on one side of the water outlet diaphragm (7), along with the increase of the water pressure, when the pressure value exceeds the other side pressure of the water outlet diaphragm (7), the water outlet diaphragm (7) moves to compress the pagoda spring (11), the water storage cavity is communicated with the water discharge cavity (802), water enters the water discharge cavity (802) from the water storage cavity, then sequentially flows through the water discharge flow passage (a 2) on the lower sealing gasket (5), the upper sealing gasket (3) and the non-return seat (4), and finally the water discharge flow passage (a 2) of the water inlet and outlet cover (2) is pumped to the outside.
And (3) pressure relief protection:
when the drain flow channel (a 2) of the water inlet and outlet cover (2) is blocked to cause that water cannot be discharged, water pressure generated by water retained in the drain flow channel (a 2) acts on the position of the pressure relief sleeve (501) opposite to the water outlet end of the liquid return pipe (402) of the lower sealing gasket (5), when the pressure value exceeds a certain value, the pressure relief sleeve (501) expands outwards, a gap is generated between the pressure relief sleeve (501) and the liquid return pipe (402), the water outlet end of the liquid return pipe (402) is communicated with the pressure relief opening (501 a) through the generated gap, and water entering the liquid return pipe (402) is discharged into the water inlet cavity (801) from the pressure relief opening (501 a) after passing through the water outlet end of the liquid return pipe (402), so that the water pressure acting on the pressure relief sleeve (501) is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310710043.8A CN116696728A (en) | 2023-06-15 | 2023-06-15 | Bidirectional non-return diaphragm pump with expansion pressure relief structure and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310710043.8A CN116696728A (en) | 2023-06-15 | 2023-06-15 | Bidirectional non-return diaphragm pump with expansion pressure relief structure and operation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116696728A true CN116696728A (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310710043.8A Pending CN116696728A (en) | 2023-06-15 | 2023-06-15 | Bidirectional non-return diaphragm pump with expansion pressure relief structure and operation method thereof |
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| CN (1) | CN116696728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823394A (en) * | 2023-12-19 | 2024-04-05 | 宁波钱湖石油设备有限公司 | Energy-saving dense-phase carbon dioxide delivery pump |
-
2023
- 2023-06-15 CN CN202310710043.8A patent/CN116696728A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823394A (en) * | 2023-12-19 | 2024-04-05 | 宁波钱湖石油设备有限公司 | Energy-saving dense-phase carbon dioxide delivery pump |
| CN117823394B (en) * | 2023-12-19 | 2024-05-28 | 宁波钱湖石油设备有限公司 | Energy-saving dense-phase carbon dioxide delivery pump |
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