Auxiliary tool for mounting diaphragm capsule of pneumatic valve

Abstract

The utility model discloses an auxiliary tool for mounting a pneumatic valve diaphragm capsule, which relates to the technical field of tools, and comprises two groups of adjustable positioning clamp bodies mounted on the diaphragm capsule, the mounting positions of the two groups of adjustable positioning clamp bodies are positioned on two sides of a push rod in the middle of the diaphragm capsule, and each adjustable positioning clamp body comprises a first clamping plate, a second clamping plate and a locking piece, the first clamping plate and the second clamping plate are connected through a locking piece, and the diaphragm capsule is clamped between the first clamping plate and the second clamping plate. The pneumatic valve diaphragm capsule mounting tool solves the problems that an existing pneumatic valve diaphragm capsule mounting tool is prone to deformation and possibly causes diaphragm capsule deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling, in particular to an auxiliary tooling for installing a pneumatic valve membrane box. Background Art

[0002] Pneumatic valves are widely used in the air separation industry. They consist of a pneumatic actuator and a valve body. Depending on the actuator's moving parts, they can be divided into diaphragm valves and piston valves. Diaphragm valves are further subdivided into several types based on their operating methods. One type of direct-acting diaphragm valve uses a high-elastic spring to support the diaphragm to provide a greater reaction force. A screw threaded through the diaphragm securely connects to the actuator's push rod, which opens and closes the valve.

[0003] To ensure that the valve can achieve its designed function, the sealing of the cylinder must be very reliable, and the contact area between the diaphragm push rod and the diaphragm is the key to achieving sealing performance. To achieve sealing in this area, the valve factory fixes the upper and lower parts of the diaphragm with two smooth diaphragm discs. One side of the push rod is sealed by gradually thickening, while the other side is tightened and sealed using the fixing screw and lock nut on the push rod. When the diaphragm of this type of actuator is disassembled and reinstalled, it is necessary to overcome the spring force to press down the diaphragm to expose the connecting screw before tightening the lock nut. Because the diaphragm disc is a smooth disc and cannot be effectively fixed, it often requires the collaboration of multiple people. Multiple people work together to press the diaphragm disc with their bare hands, while another person tightens the lock nut with a wrench. This process requires a lot of time and manpower, becoming a key step that restricts the disassembly and maintenance of the actuator, and may also cause personal injury and equipment damage.

[0004] Similar installation tools exist in the prior art, but their structures are complex, and their auxiliary fixing structures lack strength, making them prone to deformation during operation, affecting their effectiveness. More importantly, these tools are fixed at the edge of the diaphragm, a layout that can cause stress concentration and deformation of the diaphragm, compromising the cylinder's sealing performance and ultimately affecting the proper functioning of the valve. Utility Model Content

[0005] The utility model aims to provide a pneumatic valve diaphragm box installation auxiliary tooling, which can solve the problem that the existing pneumatic valve diaphragm box installation tooling is easy to deform and may cause the diaphragm box to deform.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is: this pneumatic valve membrane box installation auxiliary tooling includes two groups of adjustable positioning clamps installed on the membrane box, and the installation positions of the two groups of adjustable positioning clamps are located on both sides of the push rod in the middle of the membrane box. The adjustable positioning clamps include a first clamping plate, a second clamping plate and a locking piece. The first clamping plate and the second clamping plate are connected by the locking piece, and the membrane box is clamped between the first clamping plate and the second clamping plate.

[0007] In the above-mentioned technical solution of the auxiliary tooling for installing the pneumatic valve membrane box, a more specific technical solution may also be: protective gaskets are provided between the first clamping plate, the second clamping plate and the membrane box.

[0008] In some possible implementation schemes, the protective gasket is a combined gasket consisting of an elastic gasket and a hard gasket. The elastic gasket is in contact with the membrane box, and the hard gasket is press-connected with the first clamping plate and the second clamping plate.

[0009] In some possible implementation schemes, the elastic gasket is a rubber gasket, and the hard gasket is a metal gasket.

[0010] In some possible embodiments, the locking member is a screw assembly, which includes a screw and a double nut screwed onto the screw, and each adjustable positioning clamp specifically has two screw assemblies; the first clamp and the second clamp are respectively provided with positioning holes for passing the screw.

[0011] In some possible implementation schemes, the first clamping plate and the second clamping plate are both L-shaped angle steel clamping plates.

[0012] In some possible implementation schemes, the first clamping plate and the second clamping plate of each adjustable positioning clamp are arranged in mirror symmetry.

[0013] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0014] This fixture features a simple structure, easy operation, and effective protection against damage. The fixture is easy to install, stable, reliable, and simple to maintain. By providing two adjustable positioning clamps that clamp the center of the diaphragm on either side of the push rod, stress concentration on the diaphragm's edges is avoided, resulting in a uniform distribution of clamping force and stable clamping of the diaphragm. This allows a single person to perform installation and maintenance of pneumatic valve diaphragms, resolving the time-consuming, labor-intensive, and equipment-damaging issues of traditional methods. Compared to existing fixtures, this fixture eliminates unnecessary complexity, with the first and second clamps securely connected by a locking member to prevent deformation during use. The optimized clamping position and distributed stress effectively reduce the risk of deformation during clamping, ensuring the cylinder's seal and the proper functioning of the valve. Furthermore, the adjustable positioning clamps are highly flexible and can be adjusted to the actual size and shape of the diaphragm. This design allows the fixture to be applied to a variety of different diaphragm types, improving both versatility and ease of installation.

[0015] 2. Providing a protective gasket between the clamping plate and the membrane box as a buffer can effectively reduce the direct contact between the clamping plate and the membrane box, thereby avoiding scratches, indentations or other forms of damage to the membrane box surface due to friction or excessive pressure during the clamping process; it can also improve the stability of clamping and prevent clamping failure due to loosening or slipping.

[0016] 3. The protective gasket is equipped with a double protection structure. The elastic gasket is in direct contact with the membrane box. With its elasticity and softness, it can fit the surface of the membrane box well, reduce friction and damage, and provide a certain buffering effect to protect the membrane box from excessive pressure during the clamping process; the hard gasket is pressed against the splint to ensure the stable transmission of the clamping force and prevent deformation or damage caused by the direct action of the splint on the membrane box; the hard gasket also increases the overall strength and durability of the clamping structure.

[0017] 4. As an elastic gasket, the rubber gasket has excellent elasticity and cushioning properties. At the same time, the softness of the rubber gasket can adapt to the slight unevenness of the membrane box surface, ensuring the uniform distribution of the clamping force; the metal gasket as a hard gasket has high strength and durability. It can withstand a large clamping force to ensure the stability and reliability of the clamping structure. It also has good corrosion resistance and wear resistance, and can maintain long-term stable performance in harsh working environments.

[0018] 5. The two clamps tightly clamp the membrane box through two screw assemblies, ensuring the stability of the clamping structure. This design effectively prevents the membrane box from slipping or loosening during the clamping process, ensuring the use effect of the tooling; at the same time, the setting of the screw assembly makes the adjustment process extremely simple, and can easily adapt to membrane boxes of different sizes and shapes, further improving the practicality and flexibility of the tooling.

[0019] 6. The L-shaped angle steel clamp can provide stronger structural support. When clamping the membrane box, this structure can ensure the stability and rigidity of the clamp and prevent deformation or damage caused by external forces. The material is easy to obtain, which can reduce manufacturing costs while ensuring performance and improve the economy of tooling.

[0020] 7. The clamping plates are mirror-symmetrically arranged when clamping the membrane box, ensuring uniform distribution of clamping force. This helps avoid deformation or damage to the membrane box due to uneven force, and improves the stability and reliability of clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the use status of the pneumatic valve diaphragm box installation auxiliary tooling.

[0022] Figure 2 yes Figure 1 Top view of .

[0023] Figure 3 yes Figure 1 Left view of .

[0024] Figure 4 It is a schematic diagram of the specific structure of the adjustable positioning clamp.

[0025] Figure 5 yes Figure 4 Left view of .

[0026] Figure 6 yes Figure 4 Top view of .

[0027] Explanation of the accompanying figures: 1. Adjustable positioning clamp body; 2. Protective gasket; 3. Diaphragm box; 4. Push rod; 5. First clamping plate; 6. Second clamping plate; 7. Screw assembly. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings:

[0029] Figures 1 to 6 The pneumatic valve diaphragm assembly auxiliary tooling shown mainly includes two sets of adjustable positioning clamp bodies 1, which are respectively installed on both sides of the push rod 4 in the middle of the diaphragm 3. Each set of adjustable positioning clamp bodies 1 consists of a first clamping plate 5, a second clamping plate 6 and a locking member.

[0030] In some possible embodiments, the first clamping plate 5 and the second clamping plate 6 are both L-shaped angle steel clamping plates, which are tightly connected by a locking member and jointly clamp the membrane box 3 in the middle to ensure the stability and accuracy of the membrane box 3 during the installation process. The locking member is in the form of a screw assembly 7, and each set of adjustable positioning clamp bodies 1 is equipped with two screw assemblies 7. The screw assembly 7 consists of a screw and a double nut screwed on the screw. This design not only enhances the clamping force, but also provides additional safety. Positioning holes for inserting the screw are respectively provided on the first clamping plate 5 and the second clamping plate 6, which facilitate the accurate insertion and locking of the screw. The screw adopts a high-strength screw, and the angle steel clamp and the high-strength screw can ensure the rigidity of the tooling structure.

[0031] To protect the membrane 3 from direct pressure damage from the clamp, protective gaskets 2 are placed between the first and second clamping plates 5, 6, and the membrane 3. These protective gaskets 2 are composite gaskets, consisting of elastic and hard gaskets. The elastic gaskets, made of rubber, directly contact the membrane 3, effectively dispersing pressure and reducing indentations and damage to the membrane 3 surface. The hard gaskets, made of metal, are pressed against the first and second clamping plates 5, 6, providing stable support and clamping force.

[0032] To use the system, first install the first clamping plate 5 of each adjustable positioning clamp body 1 onto the corresponding two screws, then install a washer and nut on one end of each screw. Next, properly place the protective gasket 2 at the intended clamp installation location in the center of the membrane box 3. Next, place the two first clamping plates 5, already attached to the screws, onto the protective gaskets 2 on either side of the push rod 4 in the center of the membrane box 3. Next, install the two second clamping plates 6, mirror-image-symmetrical to the first clamping plates 5, onto the corresponding screws, also installing nuts and washers on the other ends of each screw. Protective gaskets 2 are also placed between each second clamping plate 6 and the membrane box 3. Adjust the clamping force between the first clamping plate 5 and the second clamping plate 6 by gradually tightening the nuts at each end of the screws. To ensure even clamping pressure and prevent deformation of the membrane box 3, the two screws in each set of adjustable positioning clamp bodies 1 should be screwed in the same number of threads, 3 to 5 threads at a time, in diagonal order, until the membrane box 3 is securely clamped. During the clamping process, continuously check the tightness of the clamps and the securement of the diaphragm 3 to ensure it is securely fixed between the clamps. Ensure that the support plate and the center of the cylinder are securely clamped to prevent deformation or damage during subsequent installation. Once the fixture is stable and the diaphragm 3 is securely clamped, proceed with the installation of the pneumatic valve diaphragm. Maintaining the fixture's stability and the securement of the diaphragm 3 during installation ensures quality and efficiency.

[0033] This pneumatic valve diaphragm box installation auxiliary tooling has a simple design, a stable structure and is easy to operate. It not only significantly improves the installation efficiency and quality, but also effectively reduces the risk of damage to the diaphragm box during the installation process.

Claims

1. A pneumatic valve diaphragm box installation auxiliary tool, characterized by: It includes two groups of adjustable positioning clamps installed on the membrane box, and the installation positions of the two groups of adjustable positioning clamps are located on both sides of the push rod in the middle of the membrane box. The adjustable positioning clamps include a first clamping plate, a second clamping plate and a locking piece. The first clamping plate and the second clamping plate are connected by the locking piece, and the membrane box is clamped between the first clamping plate and the second clamping plate.

2. The auxiliary tool for installing the pneumatic valve membrane box according to claim 1, characterized in that: Protective gaskets are provided between the first clamping plate, the second clamping plate and the membrane box.

3. The auxiliary tool for installing the pneumatic valve membrane box according to claim 2, characterized in that: The protective gasket is a combined gasket consisting of an elastic gasket and a hard gasket. The elastic gasket is in contact with the membrane box, and the hard gasket is press-connected with the first clamping plate and the second clamping plate.

4. The auxiliary tool for installing the pneumatic valve membrane box according to claim 3, characterized in that: The elastic gasket is a rubber gasket, and the hard gasket is a metal gasket.

5. The pneumatic valve membrane box installation auxiliary tool according to any one of claims 1 to 4, characterized in that: The locking member is a screw assembly, which includes a screw and a double nut screwed onto the screw. Each adjustable positioning clamp specifically has two screw assemblies; the first clamping plate and the second clamping plate are respectively provided with positioning holes for passing the screw.

6. The auxiliary tool for installing the pneumatic valve membrane box according to claim 4, characterized in that: The first clamping plate and the second clamping plate are both L-shaped angle steel clamping plates.

7. The auxiliary tool for installing the pneumatic valve membrane box according to claim 5, characterized in that: The first clamping plate and the second clamping plate of each adjustable positioning clamp are arranged in a mirror-symmetrical manner.

Images