CN216589036U - Drip-proof diaphragm pump - Google Patents

Abstract

The utility model is suitable for the technical field of pump equipment, and provides an anti-drip diaphragm pump, which comprises: the pump cover is provided with a feeding pipeline and a discharging pipeline; the flow stopping structure is arranged on one side of the discharging pipeline away from the discharging port and is used for preventing the material from leaking; a flow stopping cavity is formed between the flow stopping structure and the discharge end of the diaphragm assembly, and an elastic component for applying pressure to the flow stopping structure is arranged in the flow stopping cavity; and a flow guide pipeline is arranged between the flow stopping cavity and the feeding pipeline and used for guiding the materials in the feeding pipeline into the flow stopping cavity when the diaphragm pump stops working and applying pressure to the flow stopping structure so that the flow stopping structure seals the discharging pipeline. Through set up the structure of only flowing in ejection of compact pipeline department, only flow chamber intercommunication with the feed pipe and this only flow structure and this diaphragm assembly's discharge end between formation, when the pump stop work, the material among the feed pipe gets into only flow chamber, utilizes import material self pressure to only flow, can realize the only flow of any import material height.

Description

Drip-proof diaphragm pump

Technical Field

The utility model belongs to the technical field of pump equipment, and particularly relates to an anti-drip diaphragm pump.

Background

The diaphragm pump is a device for protecting the plunger and the pump cylinder by separating the infused liquid from the plunger and the pump cylinder by means of a film, and can deliver various corrosive liquids, liquids with particles, high-viscosity, volatile, inflammable and extremely toxic liquids to meet the requirements of different users, so that the diaphragm pump gradually invades the market of other pumps since birth and occupies an important part of the market. Such as: diaphragm pumps have taken an absolute leading position in the paint spraying and ceramic industries.

However, the existing diaphragm pump is not provided with a flow stopping valve generally, so that when the diaphragm pump stops working, residual materials in the diaphragm pump can leak out, or even if the flow stopping valve is arranged, when the liquid level of the feeding hole is high and the pressure is high, the flow stopping effect of the flow stopping valve is poor, and the materials cannot be completely prevented from leaking.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anti-drip diaphragm pump, and aims to solve the problem that materials leak out of a diaphragm pump in the prior art.

The utility model is thus realized, an anti-drip diaphragm pump comprising a diaphragm assembly and a drive mechanism, the anti-drip diaphragm pump comprising:

the pump cover is provided with a feeding pipeline and a discharging pipeline;

the flow stopping structure is arranged on one side of the discharge pipeline, which is far away from the discharge port, and is used for preventing the material from leaking;

a flow stopping cavity is formed between the flow stopping structure and the discharge end of the diaphragm assembly, and an elastic component for applying pressure to the flow stopping structure is arranged in the flow stopping cavity;

and a flow guide pipeline is arranged between the flow stopping cavity and the feeding pipeline and used for guiding the materials in the feeding pipeline into the flow stopping cavity and applying pressure to the flow stopping structure when the diaphragm pump stops working so that the flow stopping structure closes the discharging pipeline.

In one embodiment, the flow stopping structure includes:

the flow stopping plate is fixedly assembled with the pump cover;

the flow stopping plate is provided with a first mounting groove, and a flow stopping valve for preventing materials from leaking is arranged in the first mounting groove.

In one embodiment, the baffle plate is provided with a plurality of flow guide holes for guiding the material entering the feed pipe to the membrane assembly.

In one embodiment, the drip resistant diaphragm pump comprises:

and the mounting seat is fixedly assembled with the flow stopping plate, a second mounting groove is formed in the mounting seat, and the flow stopping cavity is formed between the first mounting groove and the second mounting groove.

In one embodiment, the drip resistant diaphragm pump comprises:

and the sealing element is arranged between the mounting seat and the flow stopping plate and used for preventing the materials in the flow stopping cavity from automatically dripping.

In one embodiment, the drip resistant diaphragm pump includes:

the raft plate is fixedly assembled with the flow stopping structure, a groove and a discharge groove are formed in the raft plate, a discharge hole is formed in the discharge groove, and the discharge hole is communicated with the flow stopping cavity;

and a discharging one-way valve is arranged on one side of the discharging groove close to the flow stopping structure.

In one embodiment, the raft plate is further provided with a plurality of feeding grooves, and feeding check valves are arranged in the feeding grooves.

In one embodiment, the diaphragm assembly includes:

the diaphragm piece changes the accommodating volume of the diaphragm cavity through self deformation;

and the transmission assembly is assembled on a power output shaft of the driving device and used for driving the diaphragm piece to reciprocate so as to generate elastic deformation.

In one embodiment, the diaphragm member includes:

a plurality of rubber leather cups, the one end of rubber leather cup respectively with charge-in pipeline and ejection of compact pipeline intercommunication, the other end of rubber leather cup with transmission assembly fixed assembly, with transmission assembly's the driving about down, change self volume, in order to incite somebody to action the material is followed charge-in pipeline gets into, and follows ejection of compact pipeline discharges.

In one embodiment, the resilient member is a spring.

In an embodiment of the present invention, there is provided an anti-drip diaphragm pump, including: the device comprises a diaphragm assembly, a driving device and a pump cover, wherein a feeding pipeline and a discharging pipeline are arranged on the pump cover; the flow stopping structure is arranged on one side of the discharge pipeline, which is far away from the discharge port, and is used for preventing the material from leaking; a flow stopping cavity is formed between the flow stopping structure and the discharge end of the diaphragm assembly, and an elastic component for applying pressure to the flow stopping structure is arranged in the flow stopping cavity; and a flow guide pipeline is arranged between the flow stopping cavity and the feeding pipeline and is used for guiding the materials in the feeding pipeline into the flow stopping cavity and applying pressure to the flow stopping structure when the diaphragm pump stops working so that the flow stopping structure seals the discharging pipeline. According to the utility model, the flow stopping structure is arranged at the discharge pipeline, the flow stopping cavity formed between the flow stopping structure of the feed pipeline and the discharge end of the diaphragm assembly is communicated through the flow guide channel, when the diaphragm pump stops working, materials in the feed pipeline enter the flow stopping cavity, and pressure towards the discharge port is applied to the flow stopping structure together with the elastic component arranged in the flow stopping cavity, so that the pressure of the internal pressure and the external pressure of the flow stopping structure is basically kept balanced, the discharge pipeline is sealed by the flow stopping structure, the flow stopping is realized, and the flow stopping at any inlet material water level height can be realized by utilizing the pressure flow stopping of the inlet materials, so that the diaphragm pump is simple and reliable.

Drawings

FIG. 1 is an exploded view of an anti-drip diaphragm pump according to an embodiment of the present invention;

FIG. 2 is a schematic view of an overall structure of an anti-drip diaphragm pump according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a flow stopping structure provided in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a mounting base according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a raft according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a diaphragm assembly according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a driving device according to an embodiment of the present invention;

FIG. 8 is a schematic illustration of a material flow path provided by an embodiment of the present invention;

wherein, 1, a diaphragm component; 2. a drive mechanism; 3. a pump cover; 4. a flow stopping structure; 5. a flow stopping cavity; 6. A diversion pipeline; 7. a mounting seat; 8. a seal member; 9. a raft plate; 10. a housing; 11. a diaphragm member; 12. a transmission assembly; 111. a rubber cup; 121. a swing rod; 122. an eccentric wheel; 21. a drive motor; 22. mounting blocks; 221. mounting holes; 31. a feed conduit; 32. a discharge pipeline; 41. a flow stopping plate; 42. a flow stop valve; 411. A first mounting groove; 4111. mounting blocks; 412. a flow guide hole; 51. an elastic member; 71. a second mounting groove; 711. an installation position; 91. a discharge chute; 92. a discharge one-way valve; 93. a feed chute; 94. a feeding one-way valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.

Referring to fig. 1 to 8, in an embodiment of the present invention, there is provided an anti-drip diaphragm pump, including: diaphragm subassembly 1 and actuating mechanism 2, antidrip diaphragm pump includes: the pump cover 3, wherein a feeding pipeline 31 and a discharging pipeline 32 are arranged on the pump cover 3; the flow stopping structure 4 is arranged on one side of the discharge pipeline 32 far away from the discharge hole 33 and is used for preventing the leakage of materials; the flow stopping structure 4 forms a flow stopping cavity 5 between the discharge ends of the diaphragm assemblies 1, and an elastic part 51 for applying pressure to the flow stopping structure 4 is arranged in the flow stopping cavity 5; a flow guide pipeline 6 is arranged between the flow stopping cavity 5 and the feeding pipeline 31, and is used for guiding the material in the feeding pipeline 31 into the flow stopping cavity 5 and applying pressure to the flow stopping structure 4 when the diaphragm pump stops working, so that the flow stopping structure 4 closes the discharging pipeline 32. According to the utility model, the flow stopping structure 4 is arranged at the discharging pipeline 32, the flow stopping cavity 5 formed between the feeding pipeline 31 and the flow stopping structure 4 and the discharging end of the diaphragm component 1 is communicated through the flow guide channel 6, when the diaphragm pump stops working, the material in the feeding pipeline 31 enters the flow stopping cavity 5, and the elastic component 51 arranged in the flow stopping cavity 5 applies pressure towards the direction of the discharging port to the flow stopping structure 4 together, so that the pressure of the internal pressure and the external pressure of the flow stopping structure 4 is basically kept balanced, the discharging pipeline is sealed by the flow stopping structure 5, the flow stopping is realized, and the flow stopping at any water level height of the inlet material can be realized by utilizing the self-pressure flow stopping of the inlet material, so that the diaphragm pump is simple and reliable.

When the diaphragm pump works, the flow stopping structure 4 is opened through the flow pressure provided by the diaphragm assembly 1 during the work, and the material in the pump cavity flows to the discharge pipeline 32 through the flow stopping structure 4, so that the normal work of the diaphragm pump is realized.

The elastic member 51 may be a spring, and in other embodiments, the elastic member may also be a spring block, a spring sheet, or the like.

Referring to fig. 1 to 8, in an embodiment of the present invention, the flow stopping structure 4 includes: a flow stopping plate 41 fixedly assembled with the pump cover 3; the flow stopping plate 41 is provided with a first installation groove 411, and a flow stopping valve 42 for preventing materials from leaking is arranged in the first installation groove 411. The stop valve 42 is disposed on a side of the discharging pipe 32 away from the discharging port, so as to seal the discharging pipe 32 and the discharging end of the diaphragm assembly 1 when the diaphragm pump stops working, thereby achieving flow stopping.

Wherein the stop valve 42 may be a resilient stop valve.

The choke plate 41 and the pump cover 3 can be fixed and assembled by locking screws. Simple structure, convenient disassembly and replacement of parts.

In an embodiment of the present invention, the edge of the flow stopping plate 41 is provided with a sealing structure for forming a seal between the pump cover 3 and the flow stopping plate to prevent the material from dropping by itself.

Wherein, the sealing structure can be a plastic sealing ring.

Referring to fig. 1 to 8, in an embodiment of the present invention, a plurality of flow guiding holes 412 are formed on the flow stopping plate 41 to guide the material entering from the feeding pipe 31 to the diaphragm assembly 1. Specifically, the diversion holes 412 may be respectively communicated with the feeding ends of the membrane assemblies 1 to allow the feeding pipe 31 to enter the material wireless membrane assembly 1, so as to realize the normal operation of the membrane assembly 1.

Referring to fig. 1-8, in one embodiment of the present invention, an anti-drip diaphragm pump includes: and the mounting seat 7 is fixedly assembled with the flow stopping plate 41, a second mounting groove 71 is formed in the mounting seat 7, and the flow stopping cavity 5 is formed between the first mounting groove 411 and the second mounting groove 71. Specifically, the edge of first mounting groove 411 is provided with an installation piece 4111, the edge of second mounting groove 71 be provided with one with installation position 711 that installation piece 4111 matches each other, during the assembly, through installation piece 4111 and this installation position 711 joint, realize that current-blocking plate 41 and this mount pad 7 fixed Assembly.

Wherein the flow guiding channel 6 can be arranged on the mounting block 711 to communicate the feeding duct 31 with the flow stopping chamber.

Referring to fig. 1-8, in an embodiment of the present invention, the drip-proof diaphragm pump further includes: and the sealing element 8 is arranged between the mounting seat 7 and the flow stopping plate 41 and is used for preventing the materials in the flow stopping cavity 5 from automatically dripping.

Wherein, this sealing member 8 can be the sealing washer to with the sealed chamber 5 that ends, avoid the material to drip by oneself.

Referring to fig. 1-8, in an embodiment of the present invention, the anti-drip diaphragm pump includes: with raft 9 of stagnant flow structure 4 fixed mounting, be provided with blown down tank 91 on raft 9, be provided with the discharge opening in the blown down tank 91, the discharge opening with stagnant flow chamber 4 switches on to in leading-in to stagnant flow chamber 5 through the discharge opening with diaphragm assembly 1 work exhaust material, open stagnant flow valve 42 through circulation pressure, realize that the material passes through discharge conduit 32 and discharges the pump chamber.

Referring to fig. 1-8, in one embodiment of the present invention, a discharge check valve 92 is disposed on a side of the discharge chute 91 adjacent to the flow stop structure 4 to prevent discharged material from flowing back into the diaphragm chamber.

Referring to fig. 1-8, in an embodiment of the present invention, the raft 9 is further provided with a plurality of feeding troughs 93, the feeding troughs 93 correspond to the diversion holes 412, and the material flowing in from the feeding pipe 31 is guided into the diaphragm chambers through the feeding holes in the feeding troughs 93.

Wherein, in this feed chute 93, all be provided with feeding check valve 94 to avoid the material that gets into in the diaphragm chamber to discharge through the feed port.

Wherein, the discharge one-way valve 92 and the feed one-way valve 94 can be all bevel one-way valves.

Referring to fig. 1-8, in one embodiment of the present invention, the diaphragm assembly 1 includes: a diaphragm member 11 for changing the accommodation volume of the diaphragm chamber by deforming itself; and the transmission component 12 is assembled on a power output shaft of the driving device 2 and is used for driving the diaphragm piece 11 to reciprocate so as to generate elastic deformation. Under the drive of the driving device 2, the transmission assembly 12 drives the diaphragm assembly 11 to reciprocate, so that the diaphragm assembly 11 is elastically deformed, and the suction and discharge of materials are realized.

The transmission assembly 12 includes a swing rod 121 and an eccentric wheel 122, and the eccentric wheel 122 is fixedly assembled with the power output shaft of the driving device 2, so that the eccentric wheel 122 can rotate synchronously with the power output shaft of the driving device 2. The swing rod 121 is installed on the eccentric wheel 122, the diaphragm piece 11 and the swing rod 121 are fixedly assembled, when the eccentric wheel 122 rotates along with the power output shaft, the swing rod 121 can drive the diaphragm piece 11 to reciprocate, the diaphragm piece 11 generates elastic deformation, the volume of a diaphragm cavity is changed, and the diaphragm pump sucks materials.

Referring to fig. 1 to 8, in an embodiment of the present invention, the diaphragm member 11 includes: a plurality of rubber leather cups 111, rubber leather cup 111's one end respectively with charge-in pipeline 31 and ejection of compact pipeline 32 intercommunication, rubber leather cup 111's the other end with transmission assembly 12 fixed mounting, with transmission assembly 12 drives down, changes self volume, in order to incite somebody to action the material is followed charge-in pipeline 31 gets into, and follows ejection of compact pipeline 32 discharges.

Wherein, the number of the rubber cup 111 can be 3.

Referring to fig. 1-8, in one embodiment of the present invention, the driving device 2 includes: a drive motor 21; and the mounting block 22 is assembled on one side of the power output end of the driving motor 21, and the mounting block 22 is provided with a mounting hole 221 for accommodating the power output end of the driving motor 21.

Referring to fig. 1 to 7, in an embodiment of the present invention, the diaphragm pump includes a housing 10, the housing 10 has a receiving cavity therein for receiving the diaphragm assembly 2, and when assembling, the driving device 2 and the side of the housing 10 away from the pump cover 3 are fixedly assembled together.

Wherein, one side of the casing 10 close to the driving device 2 is provided with a strip-shaped groove to realize the communication between the diaphragm member and the outside air.

In the embodiment of the utility model, the pump cover 3, the flow stopping structure 4, the raft 9 and the shell 10 can be fixedly assembled through locking screws, and the shell 10 comprises a first shell and a second shell, and the diaphragm assembly is arranged in a containing cavity formed between the first shell and the second shell.

Wherein, the locking screw can include 3.

In the utility model, the operating principle of the anti-drip diaphragm pump is as follows:

referring to fig. 1-8, a check valve 42 is disposed at a position where the discharge pipe 32 communicates with the pump cover 3, a check chamber 5 is formed at the check valve 42 and a discharge end of the diaphragm assembly 1, an elastic member 51 is disposed in the check chamber 5, and a flow guide pipe 6 is disposed between the check chamber 5 and the feed pipe 31 to communicate the feed pipe 31 with the check chamber 5, so that when the diaphragm pump operates, the check valve 42 is opened by a material flow pressure generated by deformation of the diaphragm assembly 1 to discharge the material, thereby realizing normal operation of the diaphragm pump. When the diaphragm pump stops working, the material in the feeding pipe 31 enters the flow stopping cavity 5 through the flow guiding pipe 6, and assuming that the pressure applied to the flow stopping valve 42 is N1 and the pressure applied to the flow stopping valve 42 by the elastic component 51 is N2 when the material flows, the pressure applied to the flow stopping valve 42 is N1+ N2, and the pressure applied to N1+ N2 is greater than N1, so that no matter how high the material water level in the feeding pipe 31 is, the influence on the flow stopping valve 42 is caused. The flow stopping at any inlet water level height can be realized.

Specifically, referring to fig. 8, when the diaphragm pump stops working, the flow path line of the material flow is a, the material flow loop when the diaphragm pump works is b, when the diaphragm pump stops working, the material remaining in the diaphragm pump still flows through the material flow path line b, when the material flows to the check valve 42, the pressure in the direction toward the check chamber 5 is provided to the check valve 42, and the pressure is N1, while the material in the feeding channel 31 flows into the check chamber 5 through the material flow path line a, and when the material flows, the pressure in the direction opposite to the NI direction is provided to the check valve 42, and the pressure is N1, meanwhile, the elastic member 51 also provides the pressure in the direction opposite to NI to the check valve 42, and the pressure is N2, because the pressure of N1+ N2 is greater than N1, the check valve 42 closes the discharging pipeline 32, the material in the material path line b is closed by the check valve 42, and does not flow into the discharging pipeline 32, can effectively prevent the problem of material water clock, and the self pressure extrusion of the material through charge-in pipeline 31 stops the valve 42, realizes that the valve 42 seals discharge conduit 32, can realize the only of arbitrary import water level height and flow, simple structure, and reliable.

In an embodiment of the present invention, the diaphragm pump may be applied to a tooth washing apparatus as a tooth washing pump.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An anti-drip diaphragm pump, comprising a diaphragm assembly (1) and a driving mechanism (2), the anti-drip diaphragm pump further comprising:

the pump cover (3), wherein a feeding pipeline (31) and a discharging pipeline (32) are arranged on the pump cover (3);

the flow stopping structure (4) is arranged on one side of the discharging pipeline (32) far away from the discharging hole and is used for preventing the leakage of the materials;

a flow stopping cavity (5) is formed between the flow stopping structure (4) and the discharge end of the diaphragm assembly (1), and an elastic component (51) for applying pressure to the flow stopping structure (4) is arranged in the flow stopping cavity (5);

a flow guide pipeline (6) is arranged between the flow stopping cavity (5) and the feeding pipeline (31) and used for guiding the material in the feeding pipeline (31) into the flow stopping cavity (5) and applying pressure to the flow stopping structure (4) when the diaphragm pump stops working so that the flow stopping structure (4) closes the discharging pipeline (32).

2. An anti-drip diaphragm pump according to claim 1, wherein the flow stopping structure (4) comprises:

a flow stopping plate (41) fixedly assembled with the pump cover (3);

the flow stopping plate is provided with a first installation groove (411), and a flow stopping valve (42) for preventing materials from leaking is arranged in the first installation groove (411).

3. An anti-drip membrane pump according to claim 2, characterized in that the flow baffle (41) is provided with a plurality of flow guiding holes (412) for guiding the material entering in the feed pipe (31) towards the membrane module (1).

4. The drip resistant diaphragm pump of claim 2 wherein said drip resistant diaphragm pump comprises:

with current-stopping plate (41) fixed assembly's mount pad (7), be provided with second mounting groove (71) on mount pad (7), first mounting groove (411) with form between second mounting groove (71) stagnant flow chamber (5).

5. The drip resistant diaphragm pump of claim 4 wherein the drip resistant diaphragm pump comprises:

and the sealing element (8) is arranged between the mounting seat (7) and the flow stopping plate (41) and is used for preventing the materials in the flow stopping cavity (5) from automatically dropping.

6. The drip resistant diaphragm pump of claim 1 wherein the drip resistant diaphragm pump comprises:

a raft plate (9) fixedly assembled with the flow stopping structure (4), wherein a discharge chute (91) is arranged on the raft plate (9), a discharge hole is arranged in the discharge chute (91), and the discharge hole is communicated with the flow stopping cavity (5);

and a discharging one-way valve (92) is arranged on one side of the discharging groove (91) close to the flow stopping structure (4).

7. An anti-drip membrane pump according to claim 6, characterized in that the raft (9) is provided with a plurality of feed troughs (93), said feed troughs (93) being provided with feed check valves (94).

8. An anti-drip diaphragm pump according to claim 1, characterized in that the diaphragm assembly (1) comprises:

a diaphragm member (11) which changes the accommodation volume of the diaphragm chamber by deforming itself;

and the transmission component (12) is assembled on a power output shaft of the driving mechanism (2) and is used for driving the diaphragm piece (11) to reciprocate so as to generate elastic deformation.

9. An anti-drip diaphragm pump according to claim 8, characterized in that the diaphragm member (11) comprises:

a plurality of rubber leather cups (111), the one end of rubber leather cup (111) respectively with charge-in pipeline (31) and ejection of compact pipeline (32) intercommunication, the other end of rubber leather cup (111) with transmission assembly (12) fixed assembly, with under the driving of transmission assembly (12), change self volume, in order to with the material is followed charge-in pipeline (31) gets into, and follows ejection of compact pipeline (32) are discharged.

10. An anti-drip diaphragm pump according to any of claims 1-9, characterized in that the elastic member (51) is a spring.

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