CN219529268U

CN219529268U - Air valve

Info

Publication number: CN219529268U
Application number: CN202320419660.8U
Authority: CN
Inventors: 张�成; 张磊; 朱学巧
Original assignee: Anhui Lebao Pump Co ltd
Current assignee: Anhui Lebao Pump Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-08-15
Anticipated expiration: 2033-03-02

Abstract

The utility model relates to the technical field of pneumatic diaphragm pump accessories, and provides an air valve which comprises a diaphragm pump shell, wherein an air inlet is formed in the diaphragm pump shell, four symmetrical movable rods in the vertical direction are inserted in the diaphragm pump shell in a sliding mode, the bottoms of the four movable rods are fixedly connected with an air valve cover body which is abutted against the inner wall of the diaphragm pump shell and used for blocking the air inlet, the top of each movable rod is detachably and fixedly connected with a limiting block, and a spring used for pushing the corresponding limiting block to move upwards is sleeved on each movable rod. When the spring is weakened and is soft, the limiting block can be detached from the movable rod, and the spring can be directly taken out from the movable rod at the moment, so that the spring can be conveniently replaced with a new spring for use, and the air valve cover body is ensured to effectively seal the air inlet.

Description

Air valve

Technical Field

The utility model relates to the technical field of pneumatic diaphragm pump accessories, in particular to an air valve.

Background

The pneumatic diaphragm pump is a novel conveying machine and is the most novel pump in China. The compressed gas is used as a power source, and various decaying liquids, such as liquid with particles, high-viscosity, easy-to-volatilize, inflammable and extremely toxic liquids, can be pumped and absorbed. The pneumatic diaphragm pump has four materials: plastic, aluminum alloy, cast iron, stainless steel. The pneumatic diaphragm pump adopts nitrile rubber, chloroprene rubber, fluororubber, polytetrafluoroethylene and polytetrahexaethylene according to different liquid media. To meet the needs of different users. Is arranged in various special occasions to pump various media which cannot be pumped by the conventional pump, and satisfactory effects are obtained.

At present, the pneumatic diaphragm pump inputs air into the pump through a pipeline, after air is conveyed, an air inlet is plugged through an air valve, so that the backflow of air in the pump is prevented, the existing air valve is generally composed of a valve seat, a valve cover (valve plate) and a spring, and after the air conveying is stopped in the air inlet, the spring can push the valve cover to plug the air inlet through self elasticity.

After long-time use, the spring is inevitably soft, which leads to poor sealing performance when the valve cover is plugged and air leakage, but because the air valve and the valve cover of the pneumatic diaphragm pump are both arranged in the pump, the operation of replacing a new air valve or the spring is more troublesome, so that the air valve is necessary to be designed to solve the problem.

Disclosure of Invention

The present utility model is directed to an air valve, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an air valve, includes the diaphragm pump shell, has seted up the air inlet on the diaphragm pump shell, and the slip is inserted on the diaphragm pump shell and is equipped with four looks symmetries and is the movable rod of vertical direction, and the common fixedly connected with of bottom of four movable rods is contradicted at the diaphragm pump shell inner wall and is used for the air valve gap body of shutoff air inlet, and the fixedly connected with stopper is all dismantled at the top of every movable rod, has all cup jointed the spring that is used for promoting to correspond the stopper and moves up on every movable rod.

Preferably, the bottom of stopper has seted up the screw thread groove, and the top of movable rod is pegged graft in the screw thread groove through screw thread cooperation, holds the stopper and rotates and can make it separate with the movable rod through the cooperation of screw thread to reach the dismantlement purpose.

Preferably, the diameter of the limiting block is larger than that of the spring, the top of the spring is abutted against the bottom of the limiting block, and the bottom of the spring is abutted against the outer surface of the diaphragm pump shell, so that the spring can always push the limiting block upwards through the elastic action of the spring.

Preferably, the top fixedly connected with silica gel pad of air valve gap body can further improve the leakproofness when air valve gap body shutoff air inlet like this.

Preferably, four symmetrical column-shaped holes are formed in the diaphragm pump shell, and each spring is inserted and connected into the corresponding column-shaped hole.

Preferably, the circumferential surface of every movable rod has all fixedly sleeved with the annular block that is located the spring, and the equal fixedly connected with silica gel sealing washer in bottom of every annular block, and when the air valve gap body was separated with diaphragm pump shell inner wall, silica gel sealing washer can carry out shutoff with the column type hole, avoids the gas in the pump to leak to the external world through the column type hole.

Compared with the prior art, the utility model has the beneficial effects that:

1. when the spring is weakened and is soft, the limiting block can be detached from the movable rod, and the spring can be directly taken out from the movable rod at the moment, so that the spring can be conveniently replaced with a new spring for use, and the air valve cover body is ensured to effectively seal the air inlet.

2. According to the utility model, when the gas is conveyed in the gas inlet so that the gas valve cover body is separated from the inner wall of the diaphragm pump shell, the silica gel sealing gasket on each movable rod can be abutted against the surface of the diaphragm pump shell, and the silica gel sealing gasket can seal the column-shaped hole, so that the gas in the pump is prevented from leaking to the outside through the column-shaped hole, and the tightness in the pneumatic diaphragm pump is ensured.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of another embodiment of the present utility model;

FIG. 3 is an exploded view of the structure of the present utility model;

in the figure: 1. a diaphragm pump housing; 2. an air inlet; 3. a movable rod; 4. an air valve cover body; 5. a limiting block; 6. a spring; 7. a cylindrical hole; 8. a thread groove; 9. an annular block; 10. and a silica gel sealing gasket.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

It will be apparent that numerous specific details are set forth in the following description in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than as described herein, and therefore the present utility model is not limited to the specific embodiments of the present disclosure.

Referring to fig. 1-3, the present utility model provides an air valve: including diaphragm pump shell 1, air inlet 2 has been seted up on the diaphragm pump shell 1, sliding insert on the diaphragm pump shell 1 is equipped with four symmetrical movable rod 3 that are vertical direction, the common fixedly connected with of bottom of four movable rods 3 is contradicted and is used for shutoff air inlet 2's air valve gap body 4 at diaphragm pump shell 1 inner wall, fixedly connected with stopper 5 is all dismantled at the top of every movable rod 3, all cup jointed the spring 6 that is used for promoting to correspond stopper 5 and moves up on every movable rod 3, through such design, when inputting gas in the pump, gas can be with air valve gap body 4 toward the pump internal extrusion, make air valve gap body 4 and diaphragm pump shell 1's inner wall phase separation, and after gas stops inputting, four springs 6 then can be through the effect of self elasticity with stopper 5 promotion up simultaneously, and drive four movable rods 3 and air valve gap body 4 and synchronous motion, make air valve gap body 4 can be contradicted on diaphragm pump shell 1's inner wall and carry out shutoff with air inlet 2, when the elasticity is soft for a long time appearing in spring 6, can dismantle stopper 5 from movable rod 3 from the movable rod 3 down, can take out the air valve gap body 4 directly from the air valve gap body 2, can be used directly to take out the air valve gap body 4 and take out the air gap 2.

Specifically, referring to fig. 3, a threaded groove 8 is formed at the bottom of the limiting block 5, the top of the movable rod 3 is inserted into the threaded groove 8 through threaded engagement, the limiting block 5 is held by hand and rotated to separate the movable rod 3 through threaded engagement, and at this time, the spring 6 can be replaced, and it is required to replace the limiting blocks 5 on the four movable rods 3 in sequence, so that the problem that the air valve cover body 4 falls into the pump due to simultaneous removal of the limiting blocks 5 on the four movable rods 3 is avoided.

Simultaneously, the diameter of stopper 5 is greater than the diameter of spring 6, and the top of spring 6 is contradicted in stopper 5 bottom, and the bottom of spring 6 is contradicted at the surface of diaphragm pump housing 1 for spring 6 can promote stopper 5 up all the time through self elastic action, and the air valve gap body 4 can in time carry out the shutoff to air inlet 2 when guaranteeing to stop in the air inlet 2 to the gas transmission in the pump.

Furthermore, the top of the air valve cover body 4 is fixedly connected with a silica gel pad, and the silica gel pad has better elasticity and plasticity, so that the tightness of the air valve cover body 4 when blocking the air inlet 2 can be further improved.

The specific connection mode between the movable rod 3 and the diaphragm pump shell 1 is as follows, four symmetrical column-shaped holes 7 are formed in the diaphragm pump shell 1, and each spring 6 is respectively inserted and connected in the corresponding column-shaped hole 7, so that the design is more reasonable.

It should be noted that, the annular piece 9 that is located the spring 6 has all been fixedly cup jointed to the circumference surface of every movable rod 3, and the equal fixedly connected with silica gel sealing washer 10 in bottom of every annular piece 9, like this, when the gas is carried in air inlet 2 and is made the air valve gap body 4 and the membrane pump shell 1 inner wall phase separation, silica gel sealing washer 10 on every movable rod 3 can contradict on the surface of membrane pump shell 1, and silica gel sealing washer 10 can block up column type hole 7, avoid the gas in the pump can leak outside through column type hole 7, ensure the leakproofness in the pneumatic membrane pump.

Claims

1. The utility model provides an air valve, includes diaphragm pump shell (1), has seted up air inlet (2) on diaphragm pump shell (1), its characterized in that: four symmetrical movable rods (3) in the vertical direction are inserted in a sliding mode on the diaphragm pump shell (1), the bottoms of the four movable rods (3) are fixedly connected with an air valve cover body (4) which is abutted against the inner wall of the diaphragm pump shell (1) and used for blocking the air inlet (2) in a joint mode, limiting blocks (5) are fixedly connected to the top of each movable rod (3) in a detachable mode, and springs (6) used for pushing the corresponding limiting blocks (5) to move upwards are sleeved on each movable rod (3).

2. A gas valve according to claim 1, wherein: the bottom of the limiting block (5) is provided with a thread groove (8), and the top of the movable rod (3) is inserted into the thread groove (8) through threaded fit.

3. A gas valve according to claim 1, wherein: the diameter of the limiting block (5) is larger than that of the spring (6), the top of the spring (6) is abutted against the bottom of the limiting block (5), and the bottom of the spring (6) is abutted against the outer surface of the diaphragm pump shell (1).

4. A gas valve according to claim 1, wherein: the top of the air valve cover body (4) is fixedly connected with a silica gel pad.

5. A gas valve according to claim 1, wherein: four symmetrical column-shaped holes (7) are formed in the diaphragm pump shell (1), and each spring (6) is respectively inserted and connected into the corresponding column-shaped hole (7).

6. A gas valve according to claim 1, wherein: the circumferential surface of each movable rod (3) is fixedly sleeved with an annular block (9) positioned in the spring (6), and the bottom of each annular block (9) is fixedly connected with a silica gel sealing gasket (10).