A wet state PPS spunlace separator cloth air tightness testing device

Abstract

This invention provides a wet PPS spunlace diaphragm fabric airtightness testing device, including a testing frame, a lower cylinder, and an upper cylinder. The upper cylinder is fixedly installed on the top of the testing frame and is located on top of the lower cylinder. This invention relates to the technical field of wet PPS spunlace diaphragm fabric. By setting a positioning mechanism, this invention allows the traction block to be pulled away from the testing frame. The traction block moves the traction rod, movable block, and positioning rod, causing the positioning rod to leave the positioning hole. At this point, the upper cylinder, connecting block, and housing can be moved upwards. The diaphragm fabric bottle is then laid flat on the lower flange. Next, the upper cylinder is moved downwards, clamping the diaphragm fabric between the upper and lower flanges. After releasing the traction block, the spring force pushes the movable block and positioning rod away from the spring, causing the positioning rod to enter the corresponding positioning hole, thus completing the assembly of the diaphragm fabric and effectively improving the testing speed.

Description

Technical Field

[0001] This utility model relates to the field of wet PPS spunlace membrane fabric technology, specifically a wet PPS spunlace membrane fabric air tightness testing device. Background Technology

[0002] Wet PPS spunlace diaphragm fabric is the core material of a water electrolyzer. It is placed between the anode and cathode to prevent the mixing of gases from the anode and cathode sides, ensuring gas purity. To prevent the presence of tiny pores on the diaphragm, an airtightness testing device is typically used to inspect it.

[0003] Publication number "CN218865398U" discloses an airtightness testing device for wet PPS spunlace diaphragm fabric, comprising: an upper cylinder with a lower flange at its lower part and a lower cylinder with an upper flange at its upper part; the bottom of the lower cylinder is closed, and the top of the upper cylinder is open; a water injection hole is provided at the bottom of the lower cylinder, and an air outlet is provided at the upper part of the lower cylinder; a perforated plate disposed within the lower flange; and a pressure gauge connected to the air outlet; during testing, the wet PPS spunlace diaphragm fabric to be tested is disposed between the perforated plate and the upper flange. This utility model can detect unqualified wet PPS spunlace diaphragm fabric in advance, improving work efficiency and offering the advantages of simple, convenient, and quick operation.

[0004] However, the above-mentioned device still has the following problems during implementation:

[0005] In the existing technology and the above-mentioned solutions, the diaphragm cloth is clamped between the upper and lower cylinders, water is injected into the lower cylinder, and the gas in the lower cylinder is squeezed out. If there are air holes in the diaphragm cloth, air bubbles will float out of the water in the upper cylinder. However, considering that the upper and lower cylinders are clamped by the lower flange and the upper flange, and then fixed with fasteners such as bolts, both installation and disassembly are extremely time-consuming and labor-intensive, thus reducing the detection rate. Summary of the Invention

[0006] The purpose of this invention is to provide a wet PPS spunlace membrane air tightness testing device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A wet PPS spunlace diaphragm air tightness testing device includes a testing frame, a lower cylinder, and an upper cylinder. The upper cylinder is fixedly installed on the top of the testing frame and is located on top of the lower cylinder. A water injection pipe is fixedly connected to one side of the lower cylinder. A perforated plate is fixedly installed on the inner wall of the upper cylinder. An upper flange is fixedly connected to the bottom of the upper cylinder. A lower flange that mates with the upper flange is fixedly connected to the top of the lower cylinder. A connecting block is fixedly connected to one side of the upper cylinder. One side of the connecting block extends through to one side of the testing frame and is fixedly connected to a housing. A connecting groove that mates with the connecting block is opened on one side of the testing frame. A positioning mechanism is provided inside the housing. A clamping mechanism is provided on both sides of the lower flange.

[0009] The positioning mechanism includes a movable block disposed inside the housing. Two positioning rods are fixedly connected to one side of the movable block. One end of the positioning rod extends through to one side of the housing. A positioning hole for cooperating with the positioning rod is opened on one side of the detection frame. A traction rod is fixedly connected to the side of the movable block away from the positioning rod. One end of the traction rod extends through to one side of the housing and is fixedly connected to a traction block.

[0010] Preferably, the clamping mechanism includes a positioning block fixedly connected to the circumferential side of the lower flange. The top of the positioning block is provided with a dovetail groove, and a dovetail block is slidably connected inside the dovetail groove. A positioning frame is fixedly connected to the top of the dovetail block, and a threaded rod is threadedly connected to the top of the positioning frame. A clamping block is fixedly connected to the bottom of the threaded rod.

[0011] Preferably, a friction block is fixedly connected to the bottom of the clamping block, and the friction block is made of rubber.

[0012] Preferably, a screwing block is fixedly connected to the top of the threaded rod, and screwing grooves are symmetrically formed on the circumferential side of the screwing block.

[0013] Preferably, the top of the positioning frame is provided with a threaded hole, which is used in conjunction with a threaded rod.

[0014] Preferably, sliding blocks are fixedly connected to both sides of the connecting block, and the inner wall of the connecting groove is provided with a sliding groove that cooperates with the sliding blocks.

[0015] Preferably, two springs are fixedly connected to one side of the movable block, and one end of each spring is fixedly connected to the inner wall of the housing.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model, by setting a positioning mechanism, allows the traction block to be pulled away from the testing frame. The traction block will drive the traction rod, movable block, and positioning rod to move, causing the positioning rod to leave the positioning hole. At this time, the upper cylinder, connecting block, and shell can be moved upward. Then, the diaphragm cloth bottle is laid flat on the lower flange. Next, the upper cylinder is moved downward, so that the upper and lower flanges clamp the diaphragm cloth. After releasing the traction block, the elastic force generated by the spring will push the movable block and positioning rod to move away from the spring, so that the positioning rod enters the corresponding positioning hole, thus completing the assembly of the diaphragm cloth and effectively improving the testing speed.

[0018] This invention, by setting up a clamping mechanism, enables the diaphragm plate to be clamped by the upper and lower flanges. By pushing the positioning frame along the trajectory of the dovetail groove and dovetail block, it moves towards the side closer to the upper flange. After reaching the appropriate position, the turning block is rotated, causing the threaded rod to rotate in the threaded hole. The threaded rod will drive the clamping block and friction block to move downwards and press against the top of the upper flange, improving the tightness of the contact between the upper and lower flanges and preventing gas leakage during the testing process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a rear-view perspective view of the present invention;

[0021] Figure 3 This is a perspective view of the present invention in cross-section;

[0022] Figure 4 This utility model Figure 3 A magnified view of a section at point A in the middle;

[0023] Figure 5 This is a perspective view of the upper cylinder of this utility model;

[0024] Figure 6 This is a perspective view of the clamping mechanism of this utility model.

[0025] In the diagram: 1. Testing frame; 2. Lower cylinder; 3. Upper cylinder; 4. Water injection pipe; 5. Perforated plate; 6. Upper flange; 7. Lower flange; 8. Connecting block; 9. Shell; 10. Connecting groove; 11. Movable block; 12. Positioning rod; 13. Positioning hole; 14. Traction rod; 15. Traction block; 16. Positioning block; 17. Dovetail groove; 18. Dovetail block; 19. Positioning frame; 20. Threaded rod; 21. Clamping block; 22. Friction block; 23. Tightening block; 24. Tightening groove; 25. Threaded hole; 26. Sliding block; 27. Sliding groove; 28. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6 This utility model provides a technical solution:

[0028] Example 1:

[0029] A wet PPS spunlace diaphragm air tightness testing device includes a testing frame 1, a lower cylinder 2 and an upper cylinder 3. The upper cylinder 3 is fixedly installed on the top of the testing frame 1 and is located on top of the lower cylinder 2. A water injection pipe 4 is fixedly connected to one side of the lower cylinder 2. A perforated plate 5 is fixedly installed on the inner wall of the upper cylinder 3. An upper flange 6 is fixedly connected to the bottom of the upper cylinder 3. A lower flange 7 that mates with the upper flange 6 is fixedly connected to the top of the lower cylinder 2. A connecting block 8 is fixedly connected to one side of the upper cylinder 3. One side of the connecting block 8 extends through to one side of the testing frame 1 and is fixedly connected to a housing 9. A connecting groove 10 that mates with the connecting block 8 is opened on one side of the testing frame 1. A positioning mechanism is provided inside the housing 9. A clamping mechanism is provided on both sides of the lower flange 7.

[0030] The positioning mechanism includes a movable block 11 disposed inside the housing 9. Two positioning rods 12 are fixedly connected to one side of the movable block 11. One end of the positioning rod 12 extends through to one side of the housing 9. A positioning hole 13 is provided on one side of the detection frame 1 to cooperate with the positioning rod 12. A traction rod 14 is fixedly connected to the side of the movable block 11 away from the positioning rod 12. One end of the traction rod 14 extends through to one side of the housing 9 and is fixedly connected to a traction block 15.

[0031] In this embodiment, considering that the upper cylinder 3 and the lower cylinder 2 are clamped by the lower flange 7 and the upper flange 6 to hold the diaphragm cloth, and then fixed with fasteners such as bolts, both installation and disassembly are extremely time-consuming and labor-intensive, thus reducing the detection rate. Therefore, by setting a positioning mechanism, the traction block 15 can be pulled away from the detection frame 1. The traction block 15 will drive the traction rod 14, the movable block 11 and the positioning rod 12 to move, so that the positioning rod 12 leaves the inside of the positioning hole 13. At this time, the upper cylinder 3, the connecting block 8 and the shell 9 can be moved upward. Then the diaphragm cloth bottle is laid flat on the lower flange 7. Then the upper cylinder 3 is moved downward so that the upper flange 6 and the lower flange 7 clamp the diaphragm cloth. Then the traction block 15 is released. The elastic force generated by the spring 28 will push the movable block 11 and the positioning rod 12 to move away from the spring 28, so that the positioning rod 12 enters the corresponding positioning hole 13, thus completing the assembly of the diaphragm cloth and effectively improving the detection rate.

[0032] It should be noted that the specific detection principle is common knowledge to those skilled in the art, and therefore will not be elaborated further.

[0033] Sliding blocks 26 are fixedly connected to both sides of the connecting block 8, and a sliding groove 27 is provided on the inner wall of the connecting groove 10 to cooperate with the sliding block 26.

[0034] In this embodiment, by setting the sliding block 26 and the sliding groove 27, the movement trajectory of the connecting block 8, the upper cylinder 3 and the shell 9 can be restricted, so that they can only move up and down along the trajectory of the sliding block 26 and the sliding groove 27, while improving the smoothness of their movement.

[0035] Two springs 28 are fixedly connected to one side of the movable block 11, and one end of the spring 28 is fixedly connected to the inner wall of the housing 9.

[0036] In this embodiment, by setting a spring 28, when the traction block 15 is released, the elastic force generated by the spring 28 can push the movable block 11 and the positioning rod 12 to move, thus achieving the function of resetting.

[0037] Example 2:

[0038] Based on Embodiment 1, the positioning mechanism in this embodiment enables the upper flange 6 and the lower flange 7 to quickly clamp the diaphragm cloth. However, considering that gas is prone to overflow from the edges of the upper flange 6 and the lower flange 7 during the detection process, affecting the accuracy of the detection, the clamping mechanism in this application includes a positioning block 16 fixedly connected to the circumferential side of the lower flange 7. The top of the positioning block 16 is provided with a dovetail groove 17, and a dovetail block 18 is slidably connected inside the dovetail groove 17. The top of the dovetail block 18 is fixedly connected with a positioning frame 19, and the top of the positioning frame 19 is threadedly connected with a threaded rod 20. The bottom of the threaded rod 20 is fixedly connected with a clamping block 21.

[0039] In this embodiment, considering that gas can easily overflow from the edges of the upper flange 6 and lower flange 7 during the testing process, affecting the accuracy of the test, a clamping mechanism is set up. After the diaphragm plate is clamped by the upper flange 6 and lower flange 7, the positioning frame 19 is pushed to move along the trajectory of the dovetail groove 17 and the dovetail block 18 towards the side closer to the upper flange 6. After reaching the appropriate position, the turning block 23 is rotated, which drives the threaded rod 20 to rotate in the threaded hole 25. The threaded rod 20 will drive the clamping block 21 and the friction block 22 to move downward and press on the top of the upper flange 6, improving the tightness of the contact between the upper flange 6 and the lower flange 7 and preventing gas leakage during the test.

[0040] A friction block 22 is fixedly connected to the bottom of the clamping block 21. The friction block 22 is made of rubber.

[0041] In this embodiment, by setting the friction block 22, the friction force when the clamping block 21 contacts the upper flange 6 can be increased, further improving the clamping effect of the clamping block 21, and the upper flange 6 and lower flange 7 are clamped more firmly.

[0042] A screwing block 23 is fixedly connected to the top of the threaded rod 20, and screwing grooves 24 are symmetrically opened on the circumferential side of the screwing block 23.

[0043] In this embodiment, by setting the screwing block 23 and the screwing groove 24, it is easy for the user to rotate the threaded rod 20, providing the user with a point of leverage for gripping.

[0044] The top of the positioning bracket 19 is provided with a threaded hole 25, which is used in conjunction with the threaded rod 20.

[0045] In this embodiment, by providing a threaded hole 25, when the threaded rod 20 rotates, the external thread of the threaded rod 20 engages with the threaded hole 25, causing the threaded rod 20 to drive the pressing block 21 and the friction block 22 to move downward, thus playing a transmission role.

[0046] Working principle: By pulling the traction block 15 away from the test frame 1, the traction block 15 will drive the traction rod 14, the movable block 11 and the positioning rod 12 to move, so that the positioning rod 12 leaves the inside of the positioning hole 13. At this time, the upper cylinder 3, the connecting block 8 and the shell 9 can be moved upward. Then, the diaphragm cloth bottle is laid flat on the lower flange 7. Then, the upper cylinder 3 is moved downward, so that the upper flange 6 and the lower flange 7 clamp the diaphragm cloth. After releasing the traction block 15, the elastic force generated by the spring 28 will push the movable block 11 and the positioning rod 12 to move away from the spring 28, so that the positioning rod 12 enters the corresponding positioning hole 13, thus completing the assembly of the diaphragm cloth and effectively improving the test speed.

[0047] After the diaphragm plate is clamped by the upper flange 6 and the lower flange 7, the positioning frame 19 is pushed to move along the trajectory of the dovetail groove 17 and the dovetail block 18 towards the side closer to the upper flange 6. After reaching the appropriate position, the turning block 23 is rotated, which drives the threaded rod 20 to rotate in the threaded hole 25. The threaded rod 20 will drive the pressing block 21 and the friction block 22 to move downward and press on the top of the upper flange 6, improving the tightness of the contact between the upper flange 6 and the lower flange 7 and preventing gas leakage during the detection process.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wet PPS spunlace diaphragm air tightness testing device, comprising a testing frame (1), a lower cylinder (2) and an upper cylinder (3), wherein the upper cylinder (3) is fixedly installed on the top of the testing frame (1), the upper cylinder (3) is located on top of the lower cylinder (2), a water injection pipe (4) is fixedly connected to one side of the lower cylinder (2), and a perforated plate (5) is fixedly installed on the inner wall of the upper cylinder (3), characterized in that: The bottom of the upper cylinder (3) is fixedly connected to an upper flange (6), the top of the lower cylinder (2) is fixedly connected to a lower flange (7) that cooperates with the upper flange (6), a connecting block (8) is fixedly connected to one side of the upper cylinder (3), one side of the connecting block (8) extends through to one side of the testing frame (1) and is fixedly connected to a housing (9), a connecting groove (10) that cooperates with the connecting block (8) is opened on one side of the testing frame (1), a positioning mechanism is provided inside the housing (9), and a pressing mechanism is provided on both sides of the lower flange (7). The positioning mechanism includes a movable block (11) disposed inside the housing (9). Two positioning rods (12) are fixedly connected to one side of the movable block (11). One end of the positioning rod (12) extends through to one side of the housing (9). A positioning hole (13) is provided on one side of the detection frame (1) to cooperate with the positioning rod (12). A traction rod (14) is fixedly connected to the side of the movable block (11) away from the positioning rod (12). One end of the traction rod (14) extends through to one side of the housing (9) and is fixedly connected to a traction block (15).

2. The wet PPS spunlace membrane air tightness testing device according to claim 1, characterized in that: The clamping mechanism includes a positioning block (16) fixedly connected to the circumferential side of the lower flange (7). The top of the positioning block (16) is provided with a dovetail groove (17). A dovetail block (18) is slidably connected inside the dovetail groove (17). A positioning frame (19) is fixedly connected to the top of the dovetail block (18). A threaded rod (20) is threadedly connected to the top of the positioning frame (19). A clamping block (21) is fixedly connected to the bottom of the threaded rod (20).

3. The wet PPS spunlace membrane air tightness testing device according to claim 2, characterized in that: The bottom of the clamping block (21) is fixedly connected to a friction block (22), which is made of rubber.

4. The wet PPS spunlace membrane air tightness testing device according to claim 2, characterized in that: The top of the threaded rod (20) is fixedly connected to a screwing block (23), and the screwing block (23) has symmetrical screwing grooves (24) on its circumferential side.

5. The wet PPS spunlace membrane air tightness testing device according to claim 2, characterized in that: The top of the positioning frame (19) is provided with a threaded hole (25), which is used in conjunction with the threaded rod (20).

6. The wet PPS spunlace membrane air tightness testing device according to claim 1, characterized in that: Both sides of the connecting block (8) are fixedly connected to sliding blocks (26), and the inner wall of the connecting groove (10) is provided with a sliding groove (27) that cooperates with the sliding block (26).

7. The wet PPS spunlace membrane air tightness testing device according to claim 1, characterized in that: Two springs (28) are fixedly connected to one side of the movable block (11), and one end of the springs (28) is fixedly connected to the inner wall of the housing (9).

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