Diaphragm valve assembly tool

Abstract

The utility model discloses a diaphragm valve assembly tool, relates to the technical field of valve production equipment, and aims to solve the problem that a cylinder cover of a diaphragm valve is inconvenient to assemble into a cylinder body. The diaphragm valve assembly tool comprises a barrel, a support, a twisting assembly and a plurality of one-way limiting assemblies, a cylinder body used for containing a diaphragm valve is arranged in the barrel, and the support is used for supporting the cylinder body; the twisting assembly is rotationally connected to the barrel, a twisting part of the twisting assembly is used for being connected to a cylinder cover of the diaphragm valve in a limiting mode in the radial direction and the circumferential direction, and the twisting part can axially move relative to the cylinder cover so as to apply twisting force to the cylinder cover and screw the cylinder cover of the diaphragm valve into the cylinder body; the multiple one-way limiting assemblies are arranged on the inner wall of the barrel in the axial direction of the barrel, allow the cylinder cover to axially move in the direction close to the cylinder body and limit the cylinder cover to axially move in the direction away from the cylinder body. The diaphragm valve assembly tool is used for reducing the assembly difficulty and improving the assembly quality of the valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valve production equipment, in particular to a diaphragm valve assembly tooling. Background Art

[0002] The assembly process of semiconductor-grade pneumatic diaphragm valves has relatively high requirements. The assembly process determines the quality of the products, and will affect the sealing characteristics, service life, and product consistency of the products. In the existing assembly process, the spring between the cylinder body and the cylinder head of the pneumatic diaphragm valve needs to be compressed before the cylinder head can be screwed into the cylinder body through threads, and the elastic force of the spring needs to be overcome during this process. In the pneumatic diaphragm valve, the elastic force of the spring of the cylinder body may exceed 1000N, which brings great obstacles to the assembly. Content of the Utility Model

[0003] The purpose of the utility model is to provide a diaphragm valve assembly tooling, which is used to reduce the assembly difficulty and improve the assembly quality of the diaphragm valve during the assembly process.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A diaphragm valve assembly tooling, comprising:

[0006] A cylinder, which is used to accommodate the cylinder body of the diaphragm valve;

[0007] A bracket, which is detachably connected to the lower part of the cylinder, and the bracket is used to support the cylinder body;

[0008] A torque application assembly, which is rotationally connected to the cylinder, and the torque application part of the torque application assembly is used for radially and circumferentially limiting and connecting to the cylinder head of the diaphragm valve, and the torque application part can axially move relative to the cylinder head to apply torque to the cylinder head and screw the cylinder head of the diaphragm valve into the cylinder body;

[0009] A plurality of one-way limiting assemblies, which are arranged along the axial direction of the cylinder on the inner wall of the cylinder. The one-way limiting assembly allows the cylinder head to axially move in the direction close to the cylinder body, and restricts the cylinder head from axially moving in the direction away from the cylinder body.

[0010] Optionally, in the above diaphragm valve assembly tooling, the one-way limiting assembly includes:

[0011] A pressure rod, one end of the pressure rod is hinged to the cylinder, and the pressure rod is used for axially limiting the upper part of the cylinder head in contact;

[0012] An elastic reset member, which is fixedly connected to the lower part of the pressure rod and the cylinder respectively, and is used to apply an elastic reset force away from the cylinder to the pressure rod;

[0013] A limiting block, which is located above the pressure rod and is fixedly connected to the cylinder, and the limiting block is used for contact and limitation with the pressure rod.

[0014] Optionally, in the above diaphragm valve assembly tooling, a plurality of one-way limiting components are arranged on the inner wall of the cylinder body and are spaced along the axial and circumferential directions of the cylinder body.

[0015] Optionally, in the above diaphragm valve assembly tooling, a plurality of one-way limiting components are arranged on the inner wall of the cylinder body and are evenly spaced along the axial and circumferential directions of the cylinder body.

[0016] Optionally, in the above diaphragm valve assembly tooling, the cylinder block is fixedly arranged on the frame, and the diaphragm valve assembly tooling further includes:

[0017] A connecting ring, which is fixedly connected to the bracket;

[0018] At least two second bolts, which pass through the connecting ring and are threadedly connected to the cylinder body, and the second bolts are used to adjust the height of the cylinder body relative to the bracket;

[0019] At least two first bolts, and the frame is fixedly connected to the bracket through the first bolts.

[0020] Optionally, in the above diaphragm valve assembly tooling, the torque application component includes:

[0021] A turntable, which is rotatably connected to the cylinder body, and a plurality of first through holes are formed on the disc surface of the turntable;

[0022] A plurality of limiting rods, which are arranged on the turntable, and the plurality of limiting rods correspond to the second through holes formed on the cylinder cover of the diaphragm valve one by one, and the limiting rods are used to drive the cylinder cover to rotate by passing through the second through holes.

[0023] Optionally, in the above diaphragm valve assembly tooling, the limiting rod includes:

[0024] A torque application rod, which axially passes through the first through hole on the turntable movably, and the torque application rod is used to drive the cylinder cover to rotate by passing through the second through hole;

[0025] An elastic element, which is fixedly connected to the end of the torque application rod far from the cylinder cover and the turntable, and the elastic element is used to apply a force close to the turntable to the end of the torque application rod far from the cylinder cover.

[0026] Optionally, in the above diaphragm valve assembly tooling, the torque application component further includes a handle, and the handle is rotatably connected to the turntable through a ratchet mechanism.

[0027] Optionally, in the above diaphragm valve assembly tooling, a protection structure is arranged at the second through hole, and the protection structure is used to protect the cylinder cover of the diaphragm valve.

[0028] Optionally, in the above diaphragm valve assembly tooling, the protection structure includes a plastic sleeve, and the plastic sleeve is fixedly sleeved in the second through hole.

[0029] Compared with the prior art, in the diaphragm valve assembly tooling provided by the present utility model, the cylinder body is sleeved outside the bracket that supports the cylinder body of the diaphragm valve, and then the cylinder head of the diaphragm valve is pressed down to the threaded connection part with the cylinder body of the diaphragm valve. Due to the existence of the one-way limiting component arranged along the axial direction of the cylinder body, during the process of screwing the cylinder head of the diaphragm valve into the cylinder body of the diaphragm valve, the cylinder head of the diaphragm valve always receives a one-way axial limiting force provided by the one-way limiting component, which resists the upward movement force from the spring. At this time, when rotating the torque application component relative to the cylinder body, since the torque application part of the torque application component is radially and circumferentially limitedly connected with the cylinder head of the diaphragm valve, the cylinder head of the diaphragm valve and the torque application component rotate simultaneously until the cylinder head of the diaphragm valve is completely screwed into the cylinder body of the diaphragm valve. The beneficial effects are as follows: The cylinder body with a one-way limiting component arranged on its inner wall is sleeved outside the cylinder body of the diaphragm valve, and the cylinder body of the diaphragm valve is supported by a bracket, which ensures the stability of the cylinder body of the diaphragm valve and does not reduce the assembly quality due to instability during the assembly process. There is a one-way limiting component arranged inside the cylinder body, so that the cylinder head of the diaphragm valve will not be pushed outwards due to the action of the spring during the assembly process. Only by rotating the torque application component can the diaphragm valve be assembled, which reduces the assembly difficulty and improves the assembly quality of the diaphragm valve. Description of the Drawings

[0030] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0031] Figure 1 It is a schematic diagram of the overall structure during the assembly of a diaphragm valve assembly tooling provided by an embodiment of the present utility model;

[0032] Figure 2 It is a schematic diagram of the overall structure when the assembly of a diaphragm valve assembly tooling provided by an embodiment of the present utility model is completed;

[0033] Figure 3 It is a partial enlarged view of the one-way limiting component of a diaphragm valve assembly tooling provided by an embodiment of the present utility model;

[0034] Figure 4 It is a top view of a diaphragm valve assembly tooling provided by an embodiment of the present utility model.

[0035] Reference numerals: 1 is a cylinder body, 2 is a bracket, 3 is a one-way limit assembly, 301 is a pressure rod, 302 is an elastic reset member, 303 is a limit block, 401 is a turntable, 402 is a torque application rod, 403 is a handle, 404 is a ratchet mechanism, 405 is an elastic element, 5 is a plastic sleeve, 6 is a connecting ring, 7 is a cylinder head, 8 is a cylinder block, 9 is a first through hole, 10 is a second through hole, 11 is a spring, 101 is a first bolt, 102 is a second bolt, and 12 is a frame. Detailed implementation manners

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined. "Several" means one or more unless otherwise specifically defined.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] Please refer to Figure 1 , an assembly tool for a diaphragm valve provided by an embodiment of the present utility model includes: a cylinder body 1, a bracket 2, a torque application assembly, and a plurality of one-way limiting assemblies 3. Among them, the cylinder body 1 is used to accommodate the cylinder block 8 of the diaphragm valve, and the bracket 2 is used to support the cylinder block 8; the torque application assembly is rotatably connected to the cylinder body 1, and the torque application part of the torque application assembly is used for radially and circumferentially limiting the connection to the cylinder head 7 of the diaphragm valve, and the torque application part can axially move relative to the cylinder head 7 to apply torque to the cylinder head 7 and screw the cylinder head 7 of the diaphragm valve into the cylinder block 8; the plurality of one-way limiting assemblies 3 are arranged along the axial direction of the cylinder body 1 on the inner wall of the cylinder body 1, and the one-way limiting assembly 3 allows the cylinder head 7 to axially move in the direction close to the cylinder block 8 and restricts the cylinder head 7 from axially moving in the direction away from the cylinder block 8.

[0042] During specific implementation: The cylinder body 1 is sleeved outside the bracket 2 that supports the cylinder block 8 of the diaphragm valve, and then the cylinder head 7 of the diaphragm valve is pressed down to the threaded connection part with the cylinder block 8 of the diaphragm valve. Due to the presence of the one-way limiting assemblies 3 arranged along the axial direction of the cylinder body 1, during the process of screwing the cylinder head 7 of the diaphragm valve into the cylinder block 8 of the diaphragm valve, the cylinder head 7 of the diaphragm valve always receives a one-way axial limiting force provided by the one-way limiting assembly 3 to resist the upward movement force from the spring 11. At this time, rotate the torque application assembly relative to the cylinder body 1. Since the torque application part of the torque application assembly is radially and circumferentially limited to the connection with the cylinder head 7 of the diaphragm valve, the cylinder head 7 of the diaphragm valve and the torque application assembly rotate simultaneously until the cylinder head 7 of the diaphragm valve is completely screwed into the cylinder block 8 of the diaphragm valve. The beneficial effects are as follows: The cylinder body 1 with the one-way limiting assemblies 3 provided on the inner wall is sleeved outside the cylinder block 8 of the diaphragm valve, and the cylinder block 8 of the diaphragm valve is supported by the bracket 2, ensuring the stability of the cylinder block 8 of the diaphragm valve and not reducing the assembly quality due to instability during the assembly process. The one-way limiting assemblies 3 are provided inside the cylinder body 1, so that the cylinder head 7 of the diaphragm valve will not be pushed outwards due to the action of the spring 11 during the assembly process. Only by rotating the torque application assembly can the assembly of the diaphragm valve be completed, reducing the assembly difficulty and improving the assembly quality of the diaphragm valve.

[0043] As a possible implementation, the one-way limiting component 3 includes a pressing rod 301, an elastic reset member 302, and a limiting block 303. One end of the pressing rod 301 is hinged to the cylinder body 1, and the pressing rod 301 is used to axially limit the upper part of the cylinder head 7 of the diaphragm valve in contact therewith; the elastic reset member 302 is fixedly connected to the lower part of the pressing rod 301 and the cylinder body 1 respectively, and is used to apply an elastic reset force away from the cylinder body 1 to the pressing rod 301; the limiting block 303 is located above the pressing rod 301 and is fixedly connected to the cylinder body 1, and the limiting block 303 is used to contact and limit the pressing rod 301. That is, each one-way limiting component 3 is composed of a connected pressing rod 301 and an elastic reset member 302, and a limiting block 303 that contacts the pressing rod 301 and is fixedly connected to the cylinder body 1. One end of the pressing rod 301 is hinged to the cylinder body 1, and the other end extends towards the axis of the cylinder body 1. And an elastic reset member 302 is fixedly connected to the side of the pressing rod 301 that is inclined towards the cylinder body 1 and close to the inner wall of the cylinder body 1. When assembling the diaphragm valve, the cylinder head 7 of the diaphragm valve is aligned with the assembly part of the cylinder body 8 of the diaphragm valve and pressed into the cylinder body 1. During the process of pressing in the cylinder head 7 of the diaphragm valve, since the radial diameter of the cylinder head 7 of the diaphragm valve is close to and smaller than the diameter of the cylinder body 1, the pressing rod 301 arranged on the inner wall of the cylinder body 1 will be pressed downward by the cylinder head 7 of the diaphragm valve and move closer to the direction of fitting the inner wall of the cylinder body 1. At this time, the elastic reset member 302 is compressed and stores elastic potential energy. When the assembly part of the cylinder head 7 of the diaphragm valve contacts the cylinder body 8 of the diaphragm valve, the upper part of the cylinder head 7 of the diaphragm valve contacts one end of the pressing rod 301. At this time, the limiting block 303 fixedly connected to the cylinder body 1 fits and contacts the upper part of the pressing rod 301, realizing axial limitation of the pressing rod 301, restricting the pressing rod 301 and thus restricting the cylinder head 7 from moving away from the cylinder body 8. Thus, under the action of the one-way limiting component, the upward movement trend of the cylinder head 7 of the diaphragm valve is blocked, and the axial limiting effect on the cylinder head 7 of the diaphragm valve is realized, which helps the smooth progress of the assembly operation.

[0044] As a possible implementation, a plurality of one-way limiting components 3 are arranged at intervals along the axial and circumferential directions of the cylinder body 1 on the inner wall of the cylinder body 1. The number of the one-way limiting components 3 is set to be multiple, and the multiple one-way limiting components 3 are arranged at intervals along the circumferential and axial directions of the cylinder body 1 on the inner wall of the cylinder body 1. Specifically, on each horizontal plane, several one-way limiting components 3 are arranged at intervals around the inner wall of the cylinder body 1 for one week, and there are multiple horizontal planes with such distributed one-way limiting components 3 along the axial direction of the cylinder body 1. For example, four, five, six or more one-way limiting components 3 are arranged at intervals around the inner wall of the cylinder body 1 for one week, ensuring the stability when limiting the cylinder head 7 of the diaphragm valve, increasing the fault tolerance during the use of the tooling, ensuring that during the assembly process, the use of the tooling will not be affected due to the failure of a small number of one-way limiting components 3, and in the case of setting multiple one-way limiting components 3, it is easy to replace the damaged one-way limiting components 3, ensuring the service life of the tooling.

[0045] Further, a plurality of one-way limiting components 3 are uniformly arranged at equal intervals along the axial and circumferential directions of the cylinder body 1 on the inner wall of the cylinder body 1. That is, in the same horizontal plane, the distance between every two one-way limiting components 3 among the plurality of one-way limiting components 3 arranged around the circumference of the cylinder body 1 is equal, and the distance between different horizontal planes provided with the one-way limiting components 3 is also equal, achieving a fully uniform distribution on the horizontal and vertical planes. The purpose of such a setting is that during the process of the cylinder head 7 of the diaphragm valve pressing down, the one-way limiting component 3 used for contacting and limiting the cylinder head 7 of the diaphragm valve provides an upward reaction force to overcome the spring 11. Since the elastic force of the spring 11 that hinders the downward movement of the cylinder head 7 of the diaphragm valve is relatively large, that is, the total upward reaction force provided by the one-way limiting component 3 to the cylinder head 7 of the diaphragm valve is relatively large. When the one-way limiting component 3 limits the cylinder head 7 of the diaphragm valve, the one-way limiting components 3 uniformly arranged on the same horizontal plane apply force to the cylinder head 7 of the diaphragm valve evenly, and the cylinder head 7 of the diaphragm valve is stressed evenly, which is beneficial to the stability during limiting and improves the assembly quality of the diaphragm valve.

[0046] It is worth mentioning that during the assembly process, the elastic force of the spring 11 between the cylinder head 7 and the cylinder body 8 of the diaphragm valve is relatively large, reaching 1000 N. Therefore, in the above embodiment, after ensuring that the cylinder body 8 of the diaphragm valve can be smoothly pressed into the cylinder head 7 of the diaphragm valve, or ensuring that the number of one-way limiting components 3 on the same horizontal plane is as large as possible, so as to achieve the effect of offsetting the elastic force of the spring 11 between the cylinder head 7 and the cylinder body 8 of the diaphragm valve, ensuring that the cylinder head 7 of the diaphragm valve can only move monotonically downward in the cylinder body 1 and cannot move upward, ensuring the stability of the one-way limiting component 3 for limiting, and realizing axial upward limiting of the cylinder head 7 of the diaphragm valve, which is helpful for assembly.

[0047] In some other embodiments, a plurality of spaced-apart limiting rings can be arranged along the axial direction of the cylinder body 1. The limiting rings are arranged obliquely downward. At the same time, a spring 11 is connected to the side of the limiting ring close to the inner wall of the cylinder body 1, and a plurality of springs 11 are connected around the circumference of the side of the limiting ring close to the inner wall of the cylinder body 1. In this way, the monotonic movement of the cylinder head 7 of the diaphragm valve in the cylinder body 1 can also be realized, and axial limiting of the cylinder head 7 of the diaphragm valve can be achieved.

[0048] As a possible implementation method, in this embodiment, as Figure 1 or Figure 4As shown in the figure, the cylinder block 8 is fixedly arranged on the frame 12. The assembly tooling of the diaphragm valve further includes a connecting ring 6, at least two second bolts 102 and at least two first bolts 101. The connecting ring 6 is fixedly connected with the bracket 2. The second bolts 102 pass through the connecting ring 6 and are threadedly connected to the cylinder body 1. The second bolts 102 are used to adjust the height of the cylinder body 1 relative to the bracket 2. The frame is fixedly connected with the bracket 2 through the first bolts 101. During specific implementation, first use the first bolts 101 to fix the bracket 2 and the frame 12 to fix the cylinder block 8 located on the frame 12, then fix the connecting ring 6 and the bracket 2 through the second bolts 102 and threadedly connect them into the cylinder body 1. After that, the cylinder head 7 enters the cylinder body 1 from the upper part of the cylinder body 1 and is screwed into the cylinder block 8 to complete the assembly. It should be noted that the second bolts 102 have a certain extension length in the axial direction of the cylinder body 1, that is, there is a certain height distance between the cylinder body 1 and the bracket 2. The purpose of such a setting is: when pressing the cylinder head 7 to the threaded connection part of the cylinder block 8 located in the cylinder body 1, due to the existence of the spring 11 between the cylinder head 7 and the cylinder block 8, the cylinder head 7 will be applied with an elastic force away from the cylinder block 8. At this time, a downward limiting force needs to be applied to it by the pressing rod 301. With such a setting, the relative position between the one-way limiting component arranged on the cylinder body 1 and the cylinder head 7 can be adjusted by adjusting the second bolts 102, ensuring that when the contact part between the cylinder head 7 and the cylinder block 8 touches, the pressing rod 301 just touches the limiting block 303 and the cylinder head 7, and applies a downward acting force to the cylinder head 7. During disassembly, unscrew the first bolts 101 and the second bolts 102, loosen the connection between the bracket 2 and the cylinder body 1, and take out the assembled diaphragm valve downward along the cylinder body 1 to complete the assembly. The purpose of such a setting is to ensure the stability and rationality of the diaphragm valve during assembly, and it is convenient for assembly and disassembly, which is beneficial to improving the assembly quality of the diaphragm valve.

[0049] Meanwhile, since the threads between the cylinder head 7 and the cylinder block 8 of the diaphragm valve are made of aluminum or aluminum alloy, during assembly, if the relatively large elastic force of the spring 11 between them cannot be offset, there will always be a relatively large upward reaction force on the cylinder head 7 of the diaphragm valve during assembly. This reaction force is borne by the threads between the cylinder head 7 and the cylinder block 8 of the diaphragm valve, so it will cause the failure and damage of the threads. In this embodiment, by adjusting the second bolts 102 to adjust the relative position between the one-way limiting component arranged on the cylinder body 1 and the cylinder head 7, it is ensured that during the process of screwing the cylinder head 7 into the cylinder block 8, the pressing rod 301 can always be in contact with the cylinder head 7 to ensure that a downward limiting force can be applied to the cylinder head 7 at any time. Thus, the relatively large elastic force from the spring 11 is always offset by the pressing rod 301 and the limiting block 303, so the threads are protected.

[0050] It is worth mentioning that the axial distance between every two one-way limiting components 3 is set to be relatively small, that is, the axial distance between multiple pressing rods 301 is relatively small, which can ensure that during the assembly process of the cylinder head 7 of the diaphragm valve, the elastic reaction force of the spring 11 is always offset, ensuring the smooth progress of the assembly operation and improving the assembly quality.

[0051] In some embodiments, the twisting part of the twisting assembly is a plurality of guide rods connected to the disk surface of the turntable 401. A plurality of guide grooves for guiding and cooperating with the guide rods are formed in the outer side wall of the cylinder head 7 of the diaphragm valve. The guide grooves should avoid the one-way limiting assembly 3 so as to insert the guide rods into the guide grooves without movement collision. During specific implementation, align the guide rods with the guide grooves on the outer side wall and insert them. Rotate the turntable 401, and the guide rods can also limit the cylinder head 7 in the circumferential and radial directions. When the turntable 401 is rotated, the guide rods drive the cylinder head 7 to rotate downward into the cylinder body 8 to complete the assembly.

[0052] As a possible implementation manner, the twisting assembly includes a turntable 401 and a plurality of limiting rods. Among them, the turntable 401 is rotatably connected to the cylinder body 1, and a plurality of first through holes 9 are formed in the disk surface of the turntable 401; the plurality of limiting rods are arranged on the turntable 401, and the limiting rods are used to drive the cylinder head 7 of the diaphragm valve to rotate through the second through holes 10. During specific implementation, first press down the cylinder head 7 of the diaphragm valve to a position where it contacts the thread on the cylinder body 8 of the diaphragm valve, and then insert the plurality of limiting rods connected to the turntable 401 into the second through holes 10 located on the cylinder head 7 of the diaphragm valve. At this time, due to the existence of the one-way limiting assembly 3, the cylinder head 7 of the diaphragm valve can only move monotonically downward. Since the plurality of limiting rods are inserted into the second through holes 10, the limiting rods limit the cylinder head 7 of the diaphragm valve in the circumferential and radial directions. When the turntable 401 rotates to drive the limiting rods to rotate, the cylinder head 7 of the diaphragm valve rotates together with the turntable 401, so as to screw the cylinder head 7 of the diaphragm valve into the cylinder body 8 of the diaphragm valve.

[0053] In some embodiments, the limiting rods can be fixedly connected to the disk surface of the turntable 401, that is, one end of the limiting rod is fixedly connected to the disk surface of the turntable 401. During specific implementation, insert the other end of the limiting rod fixedly connected to the turntable 401 into the corresponding second through hole 10 provided on the cylinder head 7, and rotate the turntable 401 to drive the cylinder head 7 to be screwed into the cylinder body 8.

[0054] As a possible implementation, in this embodiment, the limiting rod includes a torque application rod 402 and an elastic element 405. Among them, the torque application rod 402 is axially movably inserted through the first through hole 9 of the turntable 401. The torque application rod 402 is used to drive the cylinder head 7 to rotate by passing through the second through hole 10. The elastic element 405 is fixedly connected to one end of the torque application rod 402 away from the cylinder head 7 and the turntable 401. The elastic element 405 is used to apply a force to the end of the torque application rod 402 away from the cylinder head 7 to approach the turntable 401. When assembling the diaphragm valve, the torque application rod 402 is pressed down until it is inserted into the second through hole 10 of the cylinder head 7 of the diaphragm valve. The elastic element 405 provides a downward pulling force on the torque application rod 402, ensuring that one end of the torque application rod 402 is always in the second through hole 10. Rotate the turntable 401, and the torque application rod 402 drives the cylinder head 7 of the diaphragm valve to rotate until the assembly is completed. Then, overcome the pulling force of the elastic element 405, pull up the torque application rod 402, cancel the fixation of the bracket 2 and the cylinder 1 to the diaphragm valve, disassemble the connection between the bracket 2 and the cylinder 1, lift the cylinder 1 upward, and take out the diaphragm valve to complete the disassembly. The beneficial effect is that by arranging the torque application rod 402 and the elastic element 405 on the cylinder 1 in this way, the elastic element 405 provides a force close to the cylinder head 7 to the torque application rod 402, so that the torque application rod 402 does not come out of the second through hole 10 during the process of realizing its function, that is, during the assembly process, ensuring the stability of the assembly process.

[0055] In some other embodiments, the torque application assembly includes a turntable 401 and a plurality of limiting rods. One ends of the plurality of limiting rods are fixedly connected to the disk surface of the turntable 401. The positions of the limiting rods correspond one by one to the positions of the through holes on the cylinder head 7 of the diaphragm valve. When assembling the diaphragm valve, the limiting rods can be inserted into the through holes on the cylinder head 7 of the diaphragm valve, and the turntable 401 is rotated to screw the cylinder head 7 of the diaphragm valve into the cylinder body 8 of the diaphragm valve.

[0056] As a possible implementation, in this embodiment, as Figures 1 - 4 shown, the torque application assembly further includes a handle 403. The handle 403 is rotatably connected to the turntable 401 through a ratchet mechanism 404. The handle 403 is rotatably connected to the turntable 401 through the ratchet mechanism 404. When the turntable 401 is rotated circumferentially by operating the handle 403 to drive the torque application assembly to screw the cylinder head 7 into the cylinder body 8, due to the existence of the ratchet mechanism 404, only the handle 403 needs to be reciprocally swung to realize the circumferential rotation of the turntable 401 to screw the cylinder head 7 into the cylinder body 8, which is a convenient operation.

[0057] As a possible implementation, in this embodiment, as Figure 3As shown, a protection structure is provided at the second through hole 10, and the protection structure is used to protect the cylinder head 7 of the diaphragm valve. Specifically, a plastic sleeve 5 is fixedly arranged in the second through hole 10 for contacting with the torque application part of the torque application assembly. Since the cylinder head 7 is made of aluminum alloy or aluminum, when a large torque is applied, the part of the cylinder head 7 in contact with the torque application part of the torque application assembly is easily damaged and deviated. Therefore, a plastic sleeve 5 is provided to prevent the cylinder head 7 from being damaged.

[0058] It should be noted that there are no other limitations on the protection structure, as long as it can protect the contact part of the second through hole 10 of the cylinder head 7 with the torque application part of the torque application assembly. For example, a spring sleeve can be provided at the second through hole 10 to achieve buffered contact and prevent the cylinder head 7 from being damaged.

[0059] In the description of the above embodiments, the specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0060] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A diaphragm valve assembly tool, characterized in that: include: A barrel (1), wherein a cylinder (8) of a diaphragm valve is housed in the barrel (1); A bracket (2), the bracket (2) being detachably connected to the lower part of the cylinder (1), and the bracket (2) being used to support the cylinder (8); A torque applying assembly, the torque applying assembly is rotatably connected to the cylinder body (1), the torque applying portion of the torque applying assembly is used to be connected to the cylinder cover (7) of the diaphragm valve in a radial and circumferential limiting manner, and the torque applying portion can move axially relative to the cylinder cover (7) to apply torque to the cylinder cover (7) to screw the cylinder cover (7) of the diaphragm valve into the cylinder body (8); A plurality of one-way limit assemblies (3), wherein the plurality of one-way limit assemblies (3) are arranged on the inner wall of the cylinder body (1) along the axial direction of the cylinder body (1), and the one-way limit assemblies (3) allow the cylinder head (7) to move axially in a direction approaching the cylinder body (8) and limit the cylinder head (7) from moving axially in a direction away from the cylinder body (8).

2. The diaphragm valve assembly tool according to claim 1, characterized in that: The one-way limiting component (3) comprises: A pressure rod (301), one end of which is hinged to the cylinder (1), and the pressure rod (301) is used to contact the upper part of the cylinder cover (7) and limit the axial position; An elastic reset member (302), the elastic reset member (302) being respectively fixed to the lower part of the pressure rod (301) and the cylinder (1), and being used for applying an elastic reset force to the pressure rod (301) away from the cylinder (1); A limit block (303), the limit block (303) is located above the pressure rod (301) and is fixedly connected to the cylinder (1), and the limit block (303) is used to contact and limit the pressure rod (301).

3. The diaphragm valve assembly tool according to claim 1, characterized in that: The multiple one-way limiting components (3) are arranged on the inner wall of the cylinder (1) and are arranged at intervals along the axial direction and the circumferential direction of the cylinder (1).

4. The diaphragm valve assembly tool according to claim 2, characterized in that: The multiple one-way limiting components (3) are arranged on the inner wall of the cylinder (1) and are evenly spaced along the axial direction and circumferential direction of the cylinder (1).

5. The diaphragm valve assembly tool according to claim 1, characterized in that: The cylinder body (8) is fixedly mounted on a frame (12), and the diaphragm valve assembly tool further comprises: A connecting ring (6), wherein the connecting ring (6) is fixedly connected to the bracket (2); at least two second bolts (102), the second bolts (102) passing through the connecting ring (6) and being threadedly connected to the cylinder (1), the second bolts (102) being used to adjust the height of the cylinder (1) relative to the bracket (2); At least two first bolts (101), the frame (12) is fixedly connected to the bracket (2) via the first bolts (101).

6. The diaphragm valve assembly tool according to claim 1, characterized in that: The twisting assembly comprises: A rotating disk (401), the rotating disk (401) is rotatably connected to the cylinder (1), and a plurality of first through holes (9) are formed on a disk surface of the rotating disk (401); A plurality of limit rods are provided on the rotating disk (401), the plurality of limit rods correspond one-to-one to the second through holes (10) provided on the cylinder cover (7) of the diaphragm valve, and the limit rods are used to pass through the second through holes (10) to drive the cylinder cover (7) to rotate.

7. The diaphragm valve assembly tool according to claim 6, characterized in that: The limiting rod comprises: a torsion rod (402), the torsion rod (402) being movably disposed in the first through hole (9) along the axial direction of the rotating disk (401), and the torsion rod (402) being used to pass through the second through hole (10) to drive the cylinder cover (7) to rotate; An elastic element (405), wherein the elastic element (405) is fixedly connected to the end of the torsion rod (402) away from the cylinder cover (7) and the turntable (401), and the elastic element (405) is used to apply a force to the end of the torsion rod (402) away from the cylinder cover (7) to approach the turntable (401).

8. The diaphragm valve assembly tool according to claim 6, characterized in that: The twisting assembly further comprises a handle (403), and the handle (403) is rotationally connected to the rotating disk (401) via a ratchet mechanism (404).

9. The diaphragm valve assembly tool according to claim 6, characterized in that: A protective structure is provided at the second through hole (10), and the protective structure is used to protect the cylinder cover (7) of the diaphragm valve.

10. The diaphragm valve assembly tool according to claim 9, characterized in that: The protective structure comprises a plastic sleeve (5), and the plastic sleeve (5) is fixedly sleeved in the second through hole (10).

Images