CN220487807U

CN220487807U - Double-pump head diaphragm pump structure

Info

Publication number: CN220487807U
Application number: CN202321768257.2U
Authority: CN
Inventors: 陈浩; 余刚
Original assignee: Suzhou Xiaoke Cleaning Technology Co ltd
Current assignee: Suzhou Xiaoke Cleaning Technology Co ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-02-13
Anticipated expiration: 2033-07-07

Abstract

The utility model discloses a double-pump-head diaphragm pump structure, which comprises a pump body and a pair of pump heads arranged on two opposite sides of the pump body, wherein a diaphragm is arranged in the pump heads, an eccentric cam is arranged in the pump body, a guide hole is formed in the pump body, a guide piece is matched in the guide hole, the middle part of the guide piece is matched with the eccentric cam, and two ends of the guide piece are respectively connected with the diaphragms in the pair of pump heads. The eccentric cam acts on the guide piece, the guide piece linearly displaces along the guide hole, and the guide piece drives the diaphragm to periodically bulge and recess. Due to the arrangement of the guide piece and the guide hole, the eccentric cam can not drive the diaphragm to deform leftwards and rightwards, and the service life of the diaphragm is prolonged.

Description

Double-pump head diaphragm pump structure

Technical Field

The present utility model relates to pumps, and in particular to diaphragm pumps.

Background

The hydraulic diaphragm pump with the double pump heads comprises a pump body, and pump heads are arranged on two opposite sides of the pump body. The pump body is connected with the eccentric cam through the main shaft. The pump heads are internally provided with closed cavities of the diaphragms, the main shaft drives the eccentric cams, and the eccentric cams periodically act on the diaphragms in the two pump heads to enable the diaphragms to periodically bulge and dent, and the volume of the closed cavities periodically changes to finish water absorption and drainage actions.

When the eccentric cam acts on the diaphragm, a pressing force is applied to the diaphragm, and meanwhile, a left-direction or right-direction force is applied, so that the diaphragm protrudes and has a left-direction or right-direction deformation trend, and the left-direction or right-direction deformation trend leads to the shortening of the service life of the diaphragm.

Disclosure of Invention

The technical problems solved by the utility model are as follows: how to avoid the left or right deformation of the diaphragm under the action of the eccentric cam.

In order to solve the technical problems, the utility model provides the following technical scheme: the double-pump-head diaphragm pump structure comprises a pump body and a pair of pump heads arranged on two opposite sides of the pump body, wherein a diaphragm is arranged in the pump heads, an eccentric cam is arranged in the pump body, a guide hole is formed in the pump body, a guide piece is matched in the guide hole, the middle part of the guide piece is matched with the eccentric cam, and two ends of the guide piece are respectively connected with the diaphragms in the pair of pump heads.

According to the technical scheme, the eccentric cam acts on the guide piece, the guide piece linearly displaces along the guide hole, and the guide piece drives the diaphragm to periodically bulge and sink.

Due to the arrangement of the guide piece and the guide hole, the eccentric cam can not drive the diaphragm to deform leftwards and rightwards, and the service life of the diaphragm is prolonged.

The middle part of the guide piece is provided with a groove structure, and the eccentric cam is matched in the groove structure.

The diaphragms are fixed to the guide member by means of connectors mounted at the ends of the guide member, i.e. the diaphragms in a pair of pump heads are fixed to the two ends of the guide member, respectively. Under the drive of the eccentric cam, a pair of diaphragms are periodically raised and recessed.

Pump head covers are respectively arranged on two sides of the pump body, the pump head covers and the pump body form a pump head cavity, the diaphragm is positioned in the pump head cavity, and the diaphragm seals the pump cavity.

The pump body is provided with a water inlet channel and a water outlet channel, and the water inlet channel and the water outlet channel are provided with one-way valves. With the aid of the one-way valve, when the diaphragm is sunken, the space formed by the diaphragm and the pump head cover is enlarged, and water is absorbed; when the diaphragm is raised, the space formed by the diaphragm and the pump head cover is reduced, and water is discharged.

Drawings

The utility model is further described with reference to the accompanying drawings:

FIG. 1 is a schematic illustration of a dual-head diaphragm pump configuration;

FIG. 2 is an exploded view of a dual-head diaphragm pump configuration;

FIG. 3 is a cross-sectional view of a dual-head diaphragm pump configuration, wherein the pump body 10 is hidden;

fig. 4 is a schematic diagram of the combined structure of the guide member 40 and the membrane 20.

The symbols in the drawings illustrate:

10. a pump body; 12. a water inlet; 13. a water outlet;

20. a membrane;

30. an eccentric cam; 31. a main shaft;

40. a guide member; 41. a groove structure; 42. a connecting piece;

50. a pump head cover; 51. a pump head chamber;

60. a one-way valve.

Detailed Description

The double-pump-head diaphragm pump structure comprises a pump body 10 and a pair of pump heads arranged on two opposite sides of the pump body, wherein a diaphragm 20 is arranged in the pump heads, an eccentric cam 30 is arranged in the pump body, a guide hole is formed in the pump body, a guide piece 40 is matched in the guide hole, the middle part of the guide piece is matched with the eccentric cam, and two ends of the guide piece are respectively connected with the diaphragms in the pair of pump heads.

In practice, the main shaft 31 extends into the pump cavity, and the eccentric cam 30 is mounted on the main shaft 31. The eccentric cam 30 rotates under the drive of the main shaft, and acts on the guide 40, the guide linearly displaces along the guide hole, and the guide drives the diaphragm 20 to periodically bulge and recess. Due to the arrangement of the guide 40 and the guide hole, the eccentric cam 30 does not drive the diaphragm 20 to deform in the left and right directions.

As shown in fig. 4, the guide 40 is provided at a central portion thereof with a groove structure 41 in which the eccentric cam 30 is fitted. The rotating eccentric cam 30 drives the guide 40 to reciprocate periodically and linearly by acting on both side walls of the groove structure 41.

The diaphragm 20 is secured to the guide member by a connector 42 mounted to the end of the guide member 40. Alternatively, the end of the guide member is provided with a connecting hole, and the diaphragm 20 is pressed against the end surface of the guide member 40 by a connecting member 42 fitted with the connecting hole.

Referring to fig. 1 to 3, pump head covers 50 are respectively mounted on both sides of the pump body 10, and form a pump head cavity 51 with the pump body, in which the diaphragm 20 is located. The guide member 40 and the eccentric cam 30 are positioned in the pump cavity, two ends of the pump cavity are transparent, and diaphragms arranged at two ends of the guide member 40 seal the pump cavity.

The pump body 10 is provided with a water inlet channel and a water outlet channel, the water inlet channel is communicated with the water inlet 12 and the pump head cavity, the water outlet channel is communicated with the water outlet 13 and the pump head cavity, and the water inlet channel and the water outlet channel are provided with one-way valves 60. With the aid of the check valve 60, when the diaphragm 20 is depressed, the space formed by the diaphragm and the pump head cover 50 becomes large, and water is absorbed; when the diaphragm 20 protrudes, the space between the diaphragm 20 and the pump head cover 50 becomes small, and water is discharged.

The foregoing is merely illustrative of the preferred embodiments of the present utility model, and modifications in detail will readily occur to those skilled in the art based on the teachings herein without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a double pump head diaphragm pump structure, includes the pump body (10), sets up a pair of pump head in the opposite both sides of the pump body, is provided with diaphragm (20) in the pump head, is provided with eccentric cam (30) in the pump body, its characterized in that: the pump body is provided with a guide hole, a guide piece (40) is matched in the guide hole, the middle part of the guide piece is matched with the eccentric cam, and two ends of the guide piece are respectively connected with the diaphragms in the pair of pump heads.

2. The dual pump head diaphragm pump structure of claim 1, wherein: the middle part of the guide member (40) is provided with a groove structure (41) in which the eccentric cam (30) is fitted.

3. The dual pump head diaphragm pump structure of claim 1, wherein: the diaphragm (20) is secured to the guide member by a connector (42) mounted to the end of the guide member (40).

4. The dual pump head diaphragm pump structure of claim 1, wherein: pump head covers (50) are respectively arranged on two sides of the pump body (10), the pump head covers and the pump body form a pump head cavity, and the diaphragm (20) is positioned in the pump head cavity.

5. The dual pump head diaphragm pump structure of claim 1, wherein: the pump body (10) is provided with a water inlet channel and a water outlet channel, and the water inlet channel and the water outlet channel are provided with one-way valves (60).