Diaphragm piece of pneumatic diaphragm valve

Abstract

The utility model relates to the related technical field of pneumatic diaphragm valves, in particular to a diaphragm piece of a pneumatic diaphragm valve, which comprises a piece body, a sealing layer and a connecting block, the outer side surface of the piece body is attached with the sealing layer, the upper surface of the piece body is provided with the connecting block, one side surface of the piece body is provided with a fixing mechanism, and the fixing mechanism is connected with the connecting block. And a buffer mechanism is arranged on the surface of one side of the sheet body. According to the diaphragm piece of the pneumatic diaphragm valve, the mounting mode is simple and convenient, quick and firm mounting can be achieved, the mounting efficiency is improved, time and labor cost is reduced, working stability is ensured, leakage is prevented, the sealing performance of the valve is improved, during working, liquid impacts the protection piece, the protection piece extrudes the second shell to move, damping is generated through the damping ring, and spring buffering is achieved; the double mechanisms effectively disperse pressure, reduce liquid impact damage, prolong the service life and reduce the maintenance cost, the diaphragm piece can keep good performance even in the face of high-pressure and high-speed impact, and normal operation of the pneumatic diaphragm valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field related to pneumatic diaphragm valves, in particular to a diaphragm sheet of a pneumatic diaphragm valve. Background Art

[0002] The diaphragm of a pneumatic diaphragm valve is one of the core components of the valve and plays a vital role. The diaphragm is usually made of special elastic materials, such as rubber, fluororubber, polytetrafluoroethylene, etc. It mainly plays the function of isolation and control in the pneumatic diaphragm valve. On the one hand, the diaphragm completely separates the fluid in the valve body from the pneumatic actuator to prevent the fluid from leaking to the actuator side, ensuring the cleanliness and normal operation of the actuator, while also avoiding the corrosion and damage of the actuator components by the fluid. On the other hand, through the action of the pneumatic actuator, the diaphragm can be flexibly deformed to control the opening and closing of the valve. When the actuator pushes the diaphragm to move upward, the valve opens and the fluid can pass smoothly. When the actuator pulls the diaphragm downward, the valve closes to prevent the fluid from flowing. The material selection of the diaphragm needs to be based on different The pneumatic diaphragm valve is determined by the characteristics of the fluid medium to ensure good corrosion resistance and sealing. Its existence enables the pneumatic diaphragm valve to adapt to a variety of complex working environments and fluid media, and plays an important control role in the chemical, pharmaceutical, food and other industries. The pneumatic diaphragm valve diaphragm plus a convenient fixing mechanism has obvious advantages. On the one hand, it can ensure that the diaphragm is stable and firm during operation and will not shift due to fluid pressure or vibration, thereby ensuring the sealing and normal operation of the valve. On the other hand, the convenient fixing mechanism makes installation and disassembly more convenient, reducing maintenance costs and time. In actual applications, it can improve production efficiency, reduce the risk of failure due to loose diaphragm, and provide strong guarantees for the reliable operation of the pneumatic diaphragm valve under various complex working conditions. It also extends the service life of the diaphragm and the entire valve, and improves the comprehensive performance of the pneumatic diaphragm valve.

[0003] However, the diaphragm of the existing pneumatic diaphragm valve may be offset during use after installation, and the installation and fixing effect is not very good. Moreover, after use, the buffering effect of the diaphragm when encountering the impact of the liquid is not very good. Utility Model Content

[0004] The purpose of the present utility model is to provide a diaphragm for a pneumatic diaphragm valve to solve the problem in the above-mentioned background technology that the diaphragm of the existing pneumatic diaphragm valve may be offset during use after installation, the installation and fixing effect is not very good, and the buffering effect is not very good when encountering the impact of liquid after use.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a diaphragm sheet of a pneumatic diaphragm valve, comprising a sheet body, a sealing layer, and a connecting block, wherein the outer surface of the sheet body is bonded with the sealing layer, the upper surface of the sheet body is mounted with the connecting block, one side surface of the sheet body is provided with a fixing mechanism, and one side surface of the sheet body is provided with a buffer mechanism;

[0006] The fixing mechanism includes a placement groove, a fixing block, a sealing ring, a connecting ring, a clamping block, a bolt and a protective sheet. A placement groove is provided on one side surface of the sheet body, a fixing block is installed on the upper surface of the placement groove, a sealing ring is attached to the inner surface of the placement groove, a connecting ring is provided on one side surface of the placement groove, a clamping block is installed on one side surface of the connecting ring, and a bolt is passed through one side surface of the connecting ring.

[0007] Preferably, a protective sheet is fixedly connected to one side surface of the connecting ring.

[0008] Preferably, the connecting block penetrates the sealing layer and is connected to the sheet body.

[0009] Preferably, the bolt passes through the connecting ring and is connected to the clamping block and the fixing block.

[0010] Preferably, a fixing block is sleeved on one side surface of the clamping block.

[0011] Preferably, the buffer mechanism includes a fixing ring, a first shell, a second shell, a spring and a damping ring. The fixing ring is fixedly connected to one side surface of the sheet body, the first shell is installed on one side surface of the fixing ring, the second shell is sleeved on the inner side surface of the first shell, the spring is fixedly connected to one side surface of the fixing ring, and the damping ring is fixedly connected to the outer side surface of the second shell.

[0012] Preferably, a protective sheet is connected to one end surface of the spring.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the diaphragm of the pneumatic diaphragm valve is fixed by placing the sealing ring in the placement groove, and then the connecting ring drives the clamping block into the placement groove, and the connecting ring is rotated to make the clamping block clamp the fixing block and then fixed with bolts. This installation method is simple and convenient to operate, and can quickly achieve the firm installation of the diaphragm, which not only improves the installation efficiency and reduces the installation time and labor cost, but also ensures the stability of the diaphragm during the operation of the valve. The stable installation structure can effectively prevent leakage and other problems caused by loose installation, improves the sealing performance of the valve, and ensures the normal operation of the pneumatic diaphragm valve. When the plate body is in use, if the liquid inside the pneumatic diaphragm valve impacts the protective plate, the protective plate will squeeze the second shell and move inside the first shell. This design can effectively disperse the pressure caused by the liquid impact. At the same time, the second shell drives the damping ring to generate damping in the first shell, slowing down the effect of the first shell extending. In addition, the protective plate squeezes the spring for the first step of buffering. The double buffering mechanism greatly reduces the damage to the diaphragm caused by liquid impact. This buffering effect extends the service life of the diaphragm and reduces the cost and maintenance workload caused by frequent replacement of the diaphragm. Even in the face of high-pressure and high-speed liquid impact, the diaphragm can maintain good performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a side view of the structure of the utility model;

[0015] Figure 2 This is a partial cross-sectional structural diagram of the main diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the buffer mechanism of the utility model;

[0018] Figure 5 For this utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0019] In the figure: 1. Sheet; 2. Sealing layer; 3. Connecting block; 4. Fixing mechanism; 401. Placement groove; 402. Fixing block; 403. Sealing ring; 404. Connecting ring; 405. Block; 406. Bolt; 407. Protective sheet; 5. Buffering mechanism; 501. Fixing ring; 502. First shell; 503. Second shell; 504. Spring; 505. Damping ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-5 The utility model provides a technical solution: a diaphragm of a pneumatic diaphragm valve, comprising a sheet 1, a sealing layer 2 and a connecting block 3. The outer surface of the sheet 1 is adhered to the sealing layer 2, the upper surface of the sheet 1 is mounted with the connecting block 3, one side surface of the sheet 1 is provided with a fixing mechanism 4, and one side surface of the sheet 1 is provided with a buffer mechanism 5;

[0022] The fixing mechanism 4 includes a placement groove 401, a fixing block 402, a sealing ring 403, a connecting ring 404, a clamping block 405, a bolt 406 and a protective sheet 407. A placement groove 401 is provided on one side surface of the sheet body 1, a fixing block 402 is installed on the upper surface of the placement groove 401, a sealing ring 403 is attached to the inner surface of the placement groove 401, a connecting ring 404 is provided on one side surface of the placement groove 401, a clamping block 405 is installed on one side surface of the connecting ring 404, and a bolt 406 is connected to one side surface of the connecting ring 404. 6. The fixing effect is improved by setting the placement groove 401, the fixing block 402, the sealing ring 403, the connecting ring 404, the clamping block 405, the bolt 406 and the protective sheet 407. First, the sealing ring 403 is placed in the placement groove 401 and fixed. Then, the connecting ring 404 drives the clamping block 405 to be placed in the placement groove 401, and then the connecting ring 404 is rotated. When the connecting ring 404 drives the clamping block 405 to clamp the fixing block 402, the bolt 406 is then fastened on the connecting ring 404 to fix it.

[0023] Furthermore, a protective sheet 407 is fixedly connected to one side surface of the connecting ring 404 , and the protective sheet 407 can be installed through the arrangement of the connecting ring 404 .

[0024] Furthermore, the connecting block 3 penetrates the sealing layer 2 and is connected to the sheet body 1. The provision of the sealing layer improves the sealing effect of the sheet body 1.

[0025] Furthermore, the bolt 406 passes through the connecting ring 404 and is connected to the clamping block 405 and the fixing block 402. The provision of the bolt 406 provides a better fixing effect.

[0026] Furthermore, a fixing block 402 is sleeved on one side surface of the clamping block 405 , and the connection ring 404 can be fixed by the arrangement of the clamping block 405 .

[0027] Furthermore, the buffer mechanism 5 includes a fixing ring 501, a first shell 502, a second shell 503, a spring 504 and a damping ring 505. The fixing ring 501 is fixedly connected to one side surface of the sheet 1, the first shell 502 is installed on one side surface of the fixing ring 501, the second shell 503 is sleeved on the inner side surface of the first shell 502, the spring 504 is fixedly connected to one side surface of the fixing ring 501, and the damping ring 505 is fixedly connected to the outer side surface of the second shell 503. 02. The setting of the second shell 503, the spring 504 and the damping ring 505 makes the buffering effect better. When the sheet body 1 is in use, the liquid inside the pneumatic diaphragm valve hits the protective sheet 407, and then the protective sheet 407 will squeeze the second shell 503 to move inside the first shell 502, and then the second shell 503 drives the damping ring 505 to generate a damping effect in the first shell 502 to slow down the extension of the first shell 502, and then the protective sheet 407 squeezes the spring 504 at the same time to perform the first step of buffering.

[0028] Furthermore, a protective sheet 407 is connected to the surface of one end of the spring 504 through the arrangement of the spring 504 .

[0029] Working principle: first, place the sealing ring 403 into the placement groove 401 and fix it, then drive the connecting ring 404 to drive the clamping block 405 into the placement groove 401, then rotate the connecting ring 404, and then the connecting ring 404 drives the clamping block 405 to clamp the fixing block 402, and then bolt the connecting ring 404 with bolts 406 to fix it. When the sheet body 1 is in use, the liquid inside the pneumatic diaphragm valve hits the protective sheet 407, and then the protective sheet 407 will squeeze the second shell 503 to move inside the first shell 502, and then the second shell 503 drives the damping ring 505 to generate damping in the first shell 502 to slow down the extension of the first shell 502, and then the protective sheet 407 simultaneously squeezes the spring 504 to perform the first step of buffering.

[0030] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A diaphragm sheet for a pneumatic diaphragm valve, comprising a sheet body (1), a sealing layer (2) and a connecting block (3), characterized in that: The outer surface of the sheet (1) is bonded with a sealing layer (2), the upper surface of the sheet (1) is mounted with a connecting block (3), one side surface of the sheet (1) is provided with a fixing mechanism (4), and one side surface of the sheet (1) is provided with a buffer mechanism (5); The fixing mechanism (4) comprises a placement groove (401), a fixing block (402), a sealing ring (403), a connecting ring (404), a clamping block (405), a bolt (406) and a protective sheet (407); a placement groove (401) is provided on one side surface of the sheet body (1); a fixing block (402) is installed on the upper surface of the placement groove (401); a sealing ring (403) is attached to the inner surface of the placement groove (401); a connecting ring (404) is provided on one side surface of the placement groove (401); a clamping block (405) is installed on one side surface of the connecting ring (404); and a bolt (406) is passed through and connected to one side surface of the connecting ring (404).

2. The diaphragm of a pneumatic diaphragm valve according to claim 1, characterized in that: A protective sheet (407) is fixedly connected to one side surface of the connecting ring (404).

3. The diaphragm of a pneumatic diaphragm valve according to claim 1, characterized in that: The connecting block (3) penetrates the sealing layer (2) and is connected to the sheet body (1).

4. The diaphragm of a pneumatic diaphragm valve according to claim 1, characterized in that: The bolt (406) passes through the connecting ring (404) and is connected to the clamping block (405) and the fixing block (402).

5. The diaphragm of a pneumatic diaphragm valve according to claim 4, characterized in that: A fixing block (402) is sleeved on one side surface of the clamping block (405).

6. The diaphragm of a pneumatic diaphragm valve according to claim 1, characterized in that: The buffer mechanism (5) comprises a fixing ring (501), a first shell (502), a second shell (503), a spring (504) and a damping ring (505); one side surface of the sheet body (1) is fixedly connected to the fixing ring (501); one side surface of the fixing ring (501) is mounted with the first shell (502); the inner side surface of the first shell (502) is sleeved with the second shell (503); one side surface of the fixing ring (501) is fixedly connected to the spring (504); and the outer side surface of the second shell (503) is fixedly connected to the damping ring (505).

7. The diaphragm of a pneumatic diaphragm valve according to claim 6, characterized in that: One end surface of the spring (504) is connected to a protective sheet (407).

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