Double-layer air bag pump

Abstract

The utility model belongs to the technical field of liquid delivery pumps, and particularly relates to a double-layer air bag pump which comprises air bags and a pump body, a valve plate is arranged in the center of the pump body, the pump body is divided into a left cavity and a right cavity through the valve plate, the air bags are arranged in the left cavity and the right cavity respectively, an air bag is arranged on the outer side of each air bag, and a gap between the two air bags is communicated with a safety hole. According to the air bag pump, a worker can find the damage problem of the air bag in time, pollution is effectively avoided, when the air bag on the inner layer goes wrong, the air bag pump can continue to work, production is not delayed, the purity of conveyed fluid is effectively guaranteed, pollution is avoided, and waste is also avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to liquid delivery pump technical field, concretely relates to a double -deck air bag pump. BACKGROUND

[0002] In the semiconductor industry, a delivery pump such as an air bag pump for delivering strong corrosive liquids such as acid and alkali is usually required. The air bag pump is an indispensable pump body equipment in the semiconductor production industry chain and can also be used to deliver high-purity fluids in other fields. The air bag pump uses compressed air as power and relies on the alternating increase and decrease of the working volume of the variable-volume air bag in the pump cylinder to deliver special liquids. The pump cavity of the air bag is divided into two working chambers, each working chamber is divided into two parts, i.e. a gas phase working chamber and a liquid phase working chamber. After the compressed air enters the gas phase working chamber of the pump, the compressed air bag deforms and moves, and the compressed air is controlled by the reversing valve to enter the two gas phase working chambers in turn. By alternating the liquid absorption and discharge of the liquid phase working chamber, the delivery of the liquid is realized.

[0003] In the prior art, once the air bag is damaged, especially when there is a small crack or small aperture in the air bag, the air bag pump can still work, but the compressed air will leak and contaminate the liquid to be delivered. The staff cannot discover the damage of the air bag in time, which will cause a lot of fluid to be delivered to be contaminated, affecting production and causing waste. SUMMARY

[0004] To solve the above problems, the utility model provides a double-layer air bag pump, which can help the staff discover the problem of air bag damage in time, effectively avoid contamination, and continue to work when the inner air bag has a problem, without affecting production, effectively ensuring the purity of the fluid to be delivered, avoiding contamination and waste.

[0005] The utility model mainly solves the problem that the air bag in the air bag pump has a problem and is not easy to be discovered in time. By setting a double-layer air bag and a safety valve, once the air bag is damaged (leaks air or liquid), the pressure between the two air bags increases, and the safety valve will emit an alarm sound, which is very intuitive and clear, allowing the staff to judge the problem of the air bag in the first time. Moreover, the problem of pausing the air bag pump and affecting production is solved. By cooperating the double-layer air bag, switch and one-way valve, even if the inner air bag has a problem, the air bag pump can still work, without affecting production and contaminating the delivered fluid.

[0006] The technical scheme of the utility model is as follows:

[0007] The utility model discloses a double -deck air bag pump, including air bag and pump body, the valve plate is arranged in the center of pump body, and pump body is divided into left chamber and right chamber by the valve plate, and the air bag is arranged in left chamber and right chamber, the outside of air bag is provided with an air bag again, and the gap between two air bags communicates with the safety hole, and the safety hole is connected with the safety valve.

[0008] The utility model discloses a double -deck air bag pump, including air bag and pump body, the valve plate is arranged in the center of pump body, and pump body is divided into left chamber and right chamber by the valve plate, and the air bag is arranged in left chamber and right chamber, the outside of air bag is provided with an air bag again, and the gap between two air bags communicates with the safety hole, and the safety hole is connected with the safety valve.

[0009] The utility model discloses a double -deck air bag pump, including air bag and pump body, the valve plate is arranged in the center of pump body, and pump body is divided into left chamber and right chamber by the valve plate, and the air bag is arranged in left chamber and right chamber, the outside of air bag is provided with an air bag again, and the gap between two air bags communicates with the safety hole, and the safety hole is connected with the safety valve.

[0010] The utility model discloses a double -deck air bag pump, including air bag and pump body, the valve plate is arranged in the center of pump body, and pump body is divided into left chamber and right chamber by the valve plate, and the air bag is arranged in left chamber and right chamber, the outside of air bag is provided with an air bag again, and the gap between two air bags communicates with the safety hole, and the safety hole is connected with the safety valve.

[0011] The utility model discloses a double -deck air bag pump, including air bag and pump body, the valve plate is arranged in the center of pump body, and pump body is divided into left chamber and right chamber by the valve plate, and the air bag is arranged in left chamber and right chamber, the outside of air bag is provided with an air bag again, and the gap between two air bags communicates with the safety hole, and the safety hole is connected with the safety valve.

[0012] The utility model discloses a double -deck air bag pump, including air bag and pump body, the valve plate is arranged in the center of pump body, and pump body is divided into left chamber and right chamber by the valve plate, and the air bag is arranged in left chamber and right chamber, the outside of air bag is provided with an air bag again, and the gap between two air bags communicates with the safety hole, and the safety hole is connected with the safety valve.

[0013] The utility model discloses a double -deck air bag pump, including air bag and pump body, the valve plate is arranged in the center of pump body, and pump body is divided into left chamber and right chamber by the valve plate, and the air bag is arranged in left chamber and right chamber, the outside of air bag is provided with an air bag again, and the gap between two air bags communicates with the safety hole, and the safety hole is connected with the safety valve.

[0014] The utility model discloses a double -deck air bag pump, including air bag and pump body, the valve plate is arranged in the center of pump body, and pump body is divided into left chamber and right chamber by the valve plate, and the air bag is arranged in left chamber and right chamber, the outside of air bag is provided with an air bag again, and the gap between two air bags communicates with the safety hole, and the safety hole is connected with the safety valve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is Figure 1 The enlarged view of A in the middle;

[0017] In the figure, 1 is a safety hole, 2 is a pipeline, 3 is a safety valve, 4 is a switch, 5 is a branch pipeline, 6 is a one-way valve, 7 is a pump body, 8 is an outer wind bag, 9 is a threaded end pipe, 10 is a second end cover, 11 is a first end cover, 12 is an inner wind bag, 13 is an air outlet hole, and 14 is an air inlet hole. DETAILED DESCRIPTION

[0018] The technical solutions of the embodiments of the application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the embodiments of the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the application.

[0019] As Figures 1-2 indicated, the utility model provides a kind of double-layer wind bag pump, including wind bag and pump body 7, pump body 7 central portion is provided with valve plate, pump body 7 is divided into left chamber and right chamber by valve plate, wind bag is arranged in left chamber and right chamber, the outside of wind bag is additionally provided with a wind bag, the gap between two wind bags is communicated with safety hole 1, safety hole 1 is connected with safety valve 3;Air inlet hole 14 and air outlet hole 13 are communicated with the cavity of inner wind bag 12, compressed air is introduced into wind bag by air inlet hole 14, gas in wind bag is discharged by air outlet hole 13, air inlet hole 14, air outlet hole 13 are correspondingly connected with switch valve, switch valve can use electric valve or magnetically controlled valve, switch valve can be communicated with external air to control air inlet or exhaust of wind bag;By adding a wind bag based on original one wind bag, the operation of wind bag pump is guaranteed by double wind bag, by setting safety valve 3, wind bag pump problem can be found in time, since the guarantee of double-layer wind bag, even if inner wind bag has problem, wind bag pump can continue to work for a period of time, after completing certain work, wind bag is replaced or new wind bag pump is replaced, production is not delayed, the purity of fluid to be transported is effectively guaranteed, pollution is avoided, and waste is avoided.

[0020] Another embodiment, the safety hole 1 is connected to the safety valve 3 through the pipeline 2, the pipeline 2 is connected to the branch pipeline 5, the branch pipeline 5 is provided with the switch 4 and the one-way valve 6. When the safety valve 3 alarms, it can be known that one of the air bags in the air bag pump has a problem. When the air bag pump cannot be stopped under the premise that the inner air bag 12 has a problem, the switch 4 can be opened to make the gas discharge through the switch 4 and the one-way valve 6. After the air bag pump continues to work for a period of time, the air bag pump can be stopped to replace the air bag in the air bag pump that has a problem or replace a new air bag pump.

[0021] Another embodiment, the air inlet hole 14 and the air outlet hole 13 are arranged on the end cover, the end cover includes a first end cover 11 and a second end cover 10, the first end cover 11 is connected with the second end cover 10 through threads, and a clamping connection can also be adopted, as long as the connection is stable and the end of the inner air bag 12 can be fixed and compressed. The second end cover 10 is connected with the threaded end pipe 9 on the pump body 7 through threads; the end of the inner air bag 12 is arranged between the first end cover 11 and the second end cover 10, and the end of the outer air bag 8 is arranged between the second end cover 10 and the threaded end pipe 9. The inner air bag 12 is fixed and compressed through the first end cover 11 and the second end cover 10, and the outer air bag 8 is fixed and compressed through the second end cover 10 and the threaded end pipe 9. The safety hole 1 is arranged on the second end cover 10, and the air inlet hole 14 and the air outlet hole 13 are arranged on the first end cover 11.

[0022] Another embodiment, the safety valve 3 can select the existing safety valve 3 with an alarm sound in the prior art, or the safety valve alarm device with the application number 912217634 or the safety valve pressure relief alarm device with the application number 2018221436194.

[0023] In the actual production process, whether the inner air bag 12 leaks or the outer air bag 8 leaks, the pressure between the two air bags will increase, the safety valve 3 will alarm, and it can be determined that the air bag in the left chamber or the right chamber has a problem. The technician can determine that the air bag has a problem in time. If it is convenient to close the air bag pump at this time, the air bag pump can be closed, the air bag pump can be checked and repaired, a new air bag or an updated air bag pump can be replaced. If it is not convenient to close the air bag pump at this time, the switch 4 on the pipeline 2 can be opened. If only gas is discharged from the one-way valve 6, it can be determined that the inner air bag 12 leaks. At this time, the air bag pump can continue to work. When the work is completed or it is convenient to stop the air bag pump, the air bag pump can be closed, and the air bag or the new air bag pump can be checked and repaired. When the liquid is discharged from the one-way valve 6, it can be determined that the outer air bag 8 has a problem at this time. At this time, the air bag pump needs to be immediately closed, and the air bag or the new air bag pump needs to be checked and repaired.

[0024] The utility model discloses a double -deck air bag pump, through double -deck air bag, safety valve 3 and switch 4 and check valve 6 setting, play the role of double -deck guarantee, can let staff discover the problem of air bag damage in time, avoid the pollution, when the problem of inner air bag 12, air bag pump can continue working, do not delay production, and effectively guarantee the purity of the fluid to be transported, are free from pollution, also avoid waste.

[0025] The utility model provides a double -deck air bag pump passes through double -deck air bag, safety valve 3 and switch 4 and check valve 6 setting, play the role of double -deck guarantee, can let staff discover the problem of air bag damage in time, avoid the pollution, when the problem of inner air bag 12, air bag pump can continue working, do not delay production, and effectively guarantee the purity of the fluid to be transported, are free from pollution, also avoid waste.

Claims

1. A double-layer bellows pump, comprising a bellows and a pump body (7), the pump body (7) being provided with a valve plate in the center, the pump body (7) being divided into a left chamber and a right chamber by the valve plate, and the bellows being arranged in the left chamber and the right chamber, characterized in that: The outer side of the air bag is provided with another air bag, and the gap between the two air bags is communicated with the safety hole (1), and the safety hole (1) is connected with the safety valve (3).

2. A double-layered bellows pump according to claim 1, characterized in that: The safety hole (1) is connected with the safety valve (3) through the pipeline (2).

3. A double-layered bellows pump according to claim 2, characterized in that: The pipeline (2) is connected with the branch pipeline (5), and the switch (4) and the one-way valve (6) are arranged on the branch pipeline (5).

4. A double-layered bellows pump according to claim 1, wherein: The air inlet hole (14) and the air outlet hole (13) are communicated with the cavity of the inner air bag (12).

5. A double-layered bellows pump according to claim 4, characterized in that: The air inlet hole (14) and the air outlet hole (13) are arranged on the end cover.

6. A double-layered bellows pump according to claim 5, characterized in that: The end cover comprises a first end cover (11) and a second end cover (10), the first end cover (11) is connected with the second end cover (10) through threads, and the second end cover (10) is connected with the threaded end pipe (9) on the pump body (7) through threads.

7. A double-layered bellows pump according to claim 6, characterized in that: The end part of the inner air bag (12) is arranged between the first end cover (11) and the second end cover (10), and the end part of the outer air bag (8) is arranged between the second end cover (10) and the threaded end pipe (9).

8. A double-layered bellows pump according to claim 7, characterized in that: The safety hole (1) is arranged on the second end cover (10).

9. A double-layered bellows pump according to claim 7, characterized in that: The air inlet hole (14) and the air outlet hole (13) are arranged on the first end cover (11).

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