High-purity ptfe air bag pump

Abstract

The utility model belongs to the technical field of airbag pumps, and particularly relates to a high-purity ptfe airbag pump which comprises a base, a pump body is installed at the top of the base, a flow guide cavity is formed in the pump body, a shaft rod is installed in a via hole formed in the side wall of the pump body, two outer screw tooth sleeves are arranged on the surface of the shaft rod, the outer screw tooth sleeves are both installed on the pump body, and the outer screw tooth sleeves are connected with the pump body. Air bag pieces are inserted into the two ends of the shaft rod. According to the high-purity ptfe air bag pump, the pump body, the outer screw tooth sleeve, the left pump head, the right pump head, the shaft rod, the base, the valve seat, the one-way valve, the sealing ball, the proximity switch and the air bag piece are arranged, in the using process of the high-purity ptfe air bag pump, most of the air bag pump is made of ptfe, the strong acid and alkali resistance is good, no metal pollution is caused to pure water or chemical liquid medicine, and the service life of the air bag pump is prolonged. And meanwhile, the air bag pump is not provided with a circuit and a motor, so that the heating condition is avoided, and the air bag pump can be suitable for explosion-proof occasions.

Description

Technical Field

[0001] The utility model relates to the technical field of air bag pumps, in particular to a high-purity PTFE air bag pump. Background Art

[0002] The bellows pump uses compressed air as its power. The two bellows in the bellows pump divide the pump chamber into two working chambers. Each working chamber is divided into 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 bellows deform and move. The compressed air is controlled by the reversing valve to enter the two gas phase working chambers in turn to work, and the liquid phase chamber is alternately sucked and discharged to realize the liquid transportation. However, the current bellows pump has poor resistance to strong acid and alkali corrosion during use, and is therefore not suitable for the transportation of high-purity chemicals. Therefore, we proposed a high-purity PTFE bellows pump to solve the above problem. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a high-purity PTFE bellows pump, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A high-purity PTFE air bag pump comprises a base, a pump body is installed on the top of the base, a flow guide cavity is arranged inside the pump body, a shaft is installed inside the through hole opened in the side wall of the pump body, two outer threaded sleeves are arranged on the surface of the shaft, the outer threaded sleeves are installed on the pump body, both ends of the shaft are plugged with air bag parts, two valve seats are fixed inside the flow guide cavity, two one-way valves are threadedly connected inside the flow guide cavity, sealing beads are arranged inside the valve seats and the one-way valves, one end of the pump body is threadedly connected to a left pump head, the other end of the pump body is threadedly connected to a right pump head, and the side walls of the left pump head and the right pump head are each provided with three through holes.

[0008] Furthermore, the internal threads of the guide cavity are connected to two top inspection plugs, and the tops of the top inspection plugs are provided with grooves in a circular array.

[0009] Furthermore, the internal threaded connection of the flow guide cavity is provided with two joints.

[0010] Furthermore, the countersunk holes opened on one side of the left pump head and the right pump head are both threadedly connected with proximity switches.

[0011] Furthermore, the internal threads of the four through holes are connected with end cover plugging heads, and a side wall of the end cover plugging head is provided with a strip groove.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a high-purity PTFE air bag pump, which has the following beneficial effects:

[0014] The utility model, by arranging a pump body, an outer threaded sleeve, a left pump head, a right pump head, a shaft, a base, a valve seat, a one-way valve, a sealing bead, a proximity switch and a wind bag component, uses the high-purity PTFE wind bag pump. Most of the wind bag pump is made of PTFE, which has good strong acid and alkali resistance and will not produce any metal pollution to pure water or chemical liquid, so it can be suitable for the circulation and transportation of high-purity chemicals. At the same time, the wind bag pump has no circuit and motor design and will not generate heat, so it can be suitable for explosion-proof occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is an exploded view of the overall structure of the utility model;

[0017] Figure 3 This is a front sectional view of the overall structure of the utility model;

[0018] Figure 4 It is a side sectional view of the overall structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the valve body structure of the utility model.

[0020] In the figure: 1. Pump body; 2. Outer threaded sleeve; 3. Left pump head; 4. Right pump head; 5. Shaft; 6. Base; 7. Top inspection plug; 8. Valve seat; 9. One-way valve; 10. Sealing bead; 11. Proximity switch; 12. End cover plugging head; 13. Wind bag piece; 14. Connector; 15. Strip groove; 16. Diversion chamber; 17. Through hole; 18. Sink. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a high-purity PTFE air bag pump proposed in an embodiment of the utility model includes a base 6, a pump body 1 is installed on the top of the base 6, a guide chamber 16 is arranged inside the pump body 1, a shaft 5 is installed inside the through hole opened in the side wall of the pump body 1, two outer threaded sleeves 2 are arranged on the surface of the shaft 5, and the outer threaded sleeves 2 are installed on the pump body 1, and air bag parts 13 are inserted at both ends of the shaft 5, two valve seats 8 are fixed inside the guide chamber 16, and two one-way valves 9 are threadedly connected to the inside of the guide chamber 16, and sealing beads 10 are arranged inside the valve seats 8 and the one-way valves 9, one end of the pump body 1 is threadedly connected to the left pump head 3, and the other end of the pump body 1 is threadedly connected to the right pump head 4, and the side walls of the left pump head 3 and the right pump head 4 are opened with three through holes 17. When using this high-purity PTFE air bag pump, this air bag pump does not need to be connected to the power supply when it is used, but is pneumatically driven, which has the advantages of energy saving and environmental protection, and the air bag pump runs stably, almost without noise and vibration, and will not interfere with the environment.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the internal threads of the guide chamber 16 are connected to two top inspection plugs 7, and the tops of the top inspection plugs 7 are provided with sinks 18 in a ring array. The provision of the top inspection plugs 7 facilitates the installation or maintenance of the one-way valve 9 inside the guide chamber 16, and the provision of the sinks 18 facilitates the staff to install the top inspection plugs 7 inside the guide chamber 16 and remove them.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the internal thread connection of the flow guiding cavity 16 is connected with two joints 14, which makes it more convenient to operate when connecting and fixing the pipeline with the port of the flow guiding cavity 16.

[0026] like Figure 3 As shown, in some embodiments, the countersunk holes opened on one side of the left pump head 3 and the right pump head 4 are both threadedly connected with a proximity switch 11. The proximity switch 11 performs detection in a non-contact manner, and has the characteristics of fast response speed, long service life and no effect on the life of the contacts.

[0027] like Figure 1 As shown, in some embodiments, the internal threads of four through holes 17 are connected with end cover plugging heads 12, and a side wall of the end cover plugging head 12 is provided with a strip groove 15. The end cover plugging head 12 can conveniently plug the unused through holes 17, and the strip groove 15 facilitates the installation and disassembly of the end cover plugging head 12.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-purity PTFE bellows pump, comprising a base (6), characterized in that: A pump body (1) is installed on the top of the base (6), a flow guide chamber (16) is arranged inside the pump body (1), a shaft (5) is installed inside a through hole opened in the side wall of the pump body (1), two outer threaded sleeves (2) are arranged on the surface of the shaft (5), and the outer threaded sleeves (2) are both installed on the pump body (1), and wind bag parts (13) are inserted at both ends of the shaft (5), two valve seats (8) are fixed inside the flow guide chamber (16), two one-way valves (9) are threadedly connected inside the flow guide chamber (16), and sealing beads (10) are arranged inside the valve seats (8) and the one-way valves (9), one end of the pump body (1) is threadedly connected to a left pump head (3), and the other end of the pump body (1) is threadedly connected to a right pump head (4), and the side walls of the left pump head (3) and the right pump head (4) are both provided with three through holes (17).

2. The high-purity PTFE bellows pump according to claim 1 is characterized in that: The internal threads of the guide cavity (16) are connected to two top inspection plugs (7), and the tops of the top inspection plugs (7) are provided with sink grooves (18) in a circular array.

3. The high-purity PTFE bellows pump according to claim 1 is characterized in that: The internal thread of the flow guide cavity (16) is connected to two joints (14).

4. The high-purity PTFE bellows pump according to claim 1 is characterized in that: The countersunk holes opened on one side of the left pump head (3) and the right pump head (4) are both threadedly connected with proximity switches (11).

5. The high-purity PTFE bellows pump according to claim 1 is characterized in that: The four through holes (17) are internally threadedly connected to an end cover plugging head (12), and a side wall of the end cover plugging head (12) is provided with a strip groove (15).

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