Quick-release valve diaphragm connecting structure

Abstract

The utility model discloses a quick detachable valve diaphragm connecting structure, including executive guide mechanism, valve stem, valve body, valve cover and quick detachable diaphragm mechanism, the valve cover is the cylindrical structure, and the upper port fixed connection of valve cover is connected with the executive guide mechanism, and the lower port fixed connection is connected with the valve body, and is equipped with the fluid passage in the valve body, the valve stem is connected in the executive guide mechanism, and the quick detachable diaphragm mechanism is located in the valve cover, and the bottom of quick detachable diaphragm mechanism and valve stem is detachable connection, quick detachable diaphragm mechanism includes radial locking ring cover, diaphragm chucking cover and flexible diaphragm, radial locking ring cover fixed connection is in diaphragm chucking cover top, and flexible diaphragm is connected in diaphragm chucking cover bottom, and valve stem end and radial locking ring cover alignment, and valve stem realizes and unlocks with radial locking ring cover through the plug -in action of locking, and the whole quick detachable diaphragm mechanism is driven to go down with the valve stem through the executive guide mechanism, and makes flexible diaphragm close and seal the fluid passage, this structure can realize the quick detachable between valve body and diaphragm, and effectively improved the dismounting efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of valve equipment technology, and specifically relates to a quick-release valve diaphragm connection structure. Background Technology

[0002] Diaphragm valves primarily rely on a flexible diaphragm to isolate fluids, opening and closing by pressing the diaphragm with a piston rod in the valve body. They are particularly suitable for handling high-viscosity or corrosive media. However, diaphragms are prone to aging during use, requiring timely replacement to maintain effective operation. Traditionally, the piston rod and diaphragm are fixed using threads or an inverted mounting method. This method has drawbacks: replacing the diaphragm requires rotating the piston rod or removing the inverted mounting piece, which is inconvenient, inefficient, and prone to thread stripping or damage due to incorrect installation. This is especially problematic in continuous production plants, leading to prolonged downtime and disrupting production continuity. Furthermore, the cumbersome disassembly process exacerbates issues if internal bolts rust. Regarding sealing, uneven bolt torque during reinstallation can cause leaks. Improper alignment can also affect the diaphragm's lifespan. Therefore, improvements to existing diaphragm valves are necessary. Utility Model Content

[0003] To address the aforementioned problems and technical requirements, this utility model provides a quick-release valve diaphragm connection structure, which enables rapid assembly and disassembly between the valve body and the diaphragm without the need for any tools, effectively improving assembly and disassembly efficiency, simplifying the assembly and disassembly steps, and ensuring high alignment accuracy to guarantee consistent sealing before and after replacement.

[0004] The technical solution of this utility model is as follows: A quick-release valve diaphragm connection structure includes an execution guide mechanism, a valve stem, a valve body, a valve cover, and a quick-release diaphragm mechanism. The valve cover is a cylindrical structure, with the execution guide mechanism fixedly connected to the upper end and the valve body fixedly connected to the lower end. A fluid channel is provided in the valve body. A valve stem is connected inside the execution guide mechanism, extending downward along the central axis of the valve cover. The quick-release diaphragm mechanism is disposed inside the valve cover, and the bottom end of the quick-release diaphragm mechanism is detachably connected to the valve stem. The quick-release diaphragm mechanism includes a radial locking ring, a diaphragm clamping sleeve, and a flexible diaphragm. The radial locking ring is fixedly connected to the top of the diaphragm clamping sleeve, and the flexible diaphragm is fixedly connected to the bottom of the diaphragm clamping sleeve. The end of the valve stem is aligned with the radial locking ring. The valve stem locks and unlocks with the radial locking ring through an insertion and removal action. In the locked state, the execution guide mechanism drives the quick-release diaphragm mechanism downward through the valve stem, causing the flexible diaphragm to close and seal the fluid channel.

[0005] In the above solution, the quick-release diaphragm mechanism and the valve stem are detachably connected. The quick-release diaphragm mechanism can be quickly disassembled and assembled through the insertion and removal action. No special tools are required for disassembly and assembly, the disassembly and assembly efficiency is high, and the action is simple and not prone to errors.

[0006] Furthermore, the diaphragm clamping sleeve is made of metal or engineering plastic. The flexible diaphragm is connected to the bottom of the diaphragm clamping sleeve by embedding or injection molding, and the flexible diaphragm and the diaphragm clamping sleeve are coaxially arranged. By directly injection molding the flexible diaphragm onto the bottom of the diaphragm clamping sleeve, the two become a single unit. During opening and closing operations, the diaphragm clamping sleeve can always evenly transmit the thrust of the valve stem to the flexible diaphragm, keeping the flexible diaphragm stable during opening and closing. When replacing, simply pull the flexible diaphragm downwards to remove the diaphragm clamping sleeve and the flexible diaphragm as a whole, making disassembly and assembly easier and more convenient.

[0007] Furthermore, the radial locking ring sleeve is provided with a ring of claws. The roots of all the claws are connected to the top surface of the diaphragm clamping sleeve around its central axis. The radial locking ring sleeve and the diaphragm clamping sleeve are integrally formed. The ends of all the claws extend upwards and form a ring. The bottom end of the valve stem extends into one of the claws. The ring of claws applies a radial force to the valve stem, locking it in place. The radial locking ring sleeve is then embedded in the diaphragm clamping sleeve, making the radial locking ring sleeve, the diaphragm clamping sleeve, and the flexible diaphragm a single module. This module can be used as an independent functional unit, simplifying operation and improving assembly / disassembly efficiency.

[0008] Furthermore, the valve stem end is provided with a ring of grooves, with the end of each claw recessed inward. The inner side of the ring of claws forms a convex ring that can be correspondingly engaged in the groove of the valve stem, and the outer side of the ring of claws forms a circular groove, within which is provided an elastic clamping ring. The elastic clamping ring can provide a certain radial force, increasing the radial preload of the radial locking ring sleeve, thus improving the locking effect between the valve stem and the radial locking ring sleeve; the concave part of the ring of claws simultaneously engages with the groove at the end of the valve stem, ensuring that the valve stem is evenly compressed, resulting in a better connection effect.

[0009] Furthermore, a positioning groove is provided at the center of the top surface of the diaphragm clamping sleeve. When the valve stem is clamped with the radial locking ring, the bottom end of the valve stem is correspondingly embedded in the positioning groove.

[0010] Furthermore, the fluid channel includes an inlet, an outlet, and a sealing surface. The inlet and outlet are respectively arranged parallel to each other on both sides of the sealing surface. The flexible diaphragm is aligned with the sealing surface. When the flexible diaphragm is closed downwards, it is pressed against the sealing surface to close the fluid channel.

[0011] Furthermore, the actuator guide mechanism includes a housing, an inner cavity, and a guide hole. The housing is threadedly locked to the valve cover. The housing has a guide hole at its center. The inner cavity is located inside the housing. The guide hole and the inner cavity are connected. The upper end of the valve stem is stuck in the inner cavity. The valve stem extends downward through the guide hole and into the valve cover. The valve stem is a pneumatic valve stem. A return spring is connected between the valve stem and the top surface of the inner cavity.

[0012] The beneficial effects of this utility model are as follows: 1) In this valve, the diaphragm clamping sleeve and the flexible diaphragm are pre-assembled into an integral module. The assembly adopts injection molding and inlay for connection, which has a very strong connection effect. This allows the quick-release diaphragm mechanism to be disassembled and assembled as a whole. When replacing, simply pull out the entire old quick-release diaphragm mechanism, insert the new quick-release diaphragm mechanism and lock it. No bolts need to be removed, which greatly shortens the operation time, simplifies the operation steps, and improves the disassembly and assembly efficiency; 2) Since the quick-release diaphragm mechanism is supplied as a whole, factory pre-assembly and testing ensure its sealing quality. The standardized production process ensures that each quick-release diaphragm mechanism has the same locking and sealing performance, and there will be no problem of leakage due to improper installation after replacement. The sealing reliability is higher, and disassembly and assembly can be completed without relying on the professional skills of workers. At the same time, it can greatly reduce the number of spare parts. There is no need to manage the trivial diaphragms, screws, elastic clamping rings and other parts separately, which can simplify the number of parts and save labor. Attached Figure Description

[0013] Figure 1 This is an assembly structure diagram of a quick-release valve diaphragm connection structure according to the present invention;

[0014] Figure 2 This is a diagram showing the clamping structure of the valve stem and quick-release diaphragm mechanism in this utility model;

[0015] Figure 3 This is a structural diagram showing the disengagement of the valve stem and quick-release diaphragm mechanism in this utility model;

[0016] Figure 4 This is an assembly diagram of the various parts of the quick-release diaphragm mechanism in this utility model;

[0017] The components in the diagram are labeled as follows: 1. Actuation guide mechanism; 11. Housing; 12. Inner cavity; 13. Guide hole; 14. Return spring; 2. Valve stem; 21. Slot; 3. Valve body; 31. Fluid passage; 311. Inlet; 312. Outlet; 313. Sealing surface; 4. Valve cover; 5. Quick-release diaphragm mechanism; 51. Radial locking ring; 51. Circular groove; 52. Diaphragm clamping sleeve; 521. Positioning groove; 53. Flexible diaphragm; 54. Elastic clamping ring. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0019] like Figure 1-4 The diagram shows a quick-release valve diaphragm connection structure of this utility model, including an execution guide mechanism 1, a valve stem 2, a valve body 3, a valve cover 4, and a quick-release diaphragm mechanism 5. The valve cover 4 has a cylindrical structure, with the execution guide mechanism 1 fixedly connected to the upper end of the valve cover 4 and the valve body 3 fixedly connected to the lower end. The valve body 3 has a fluid channel 31. The valve stem 2 is connected inside the execution guide mechanism 1 and extends downward along the central axis of the valve cover 4. The quick-release diaphragm mechanism 5 is disposed inside the valve cover 4 and is detachably connected to the bottom end of the valve stem 2.

[0020] The quick-release diaphragm mechanism 5 includes a radial locking ring 51, a diaphragm clamping sleeve 52, and a flexible diaphragm 53. The radial locking ring 51 is fixedly connected to the top of the diaphragm clamping sleeve 52, and the flexible diaphragm 53 is fixedly connected to the bottom of the diaphragm clamping sleeve 52. The end of the valve stem 2 is aligned with the radial locking ring 51. The valve stem 2 locks and unlocks with the radial locking ring 51 through an insertion and removal action. The diaphragm clamping sleeve 52 is made of metal or engineering plastic. The flexible diaphragm 53 is connected to the bottom of the diaphragm clamping sleeve 52 by embedding or injection molding. The flexible diaphragm 53 and the diaphragm clamping sleeve 52 are coaxially arranged.

[0021] The radial locking ring 51 has a ring of claws. The roots of all the claws surround the central axis of the diaphragm clamping sleeve 52 and are connected to its top surface. The radial locking ring and the diaphragm clamping sleeve are integrally formed. The ends of all the claws extend upward and form a ring. The bottom end of the valve stem 2 extends into one of the claws. The ring of claws applies a radial force to the valve stem 2, locking the valve stem 2. The radial locking ring is embedded in the diaphragm clamping sleeve 52, so that the radial locking ring 51, the diaphragm clamping sleeve 52 and the flexible diaphragm 53 form an integral module, which can be operated and used as an independent functional unit, simplifying the operation steps and improving the efficiency of disassembly and assembly.

[0022] The valve stem 2 has a groove 21 at its end, with each claw recessed inward. The inner side of the claws forms a convex ring that can be engaged in the groove 21, and the outer side forms a circular groove 511. An elastic clamping ring 54 is located within the circular groove 511, achieving a seal between the outer side of the valve stem 2 and the inner wall of the valve cover 4. The elastic clamping ring 54 provides a certain radial force, increasing the radial preload of the radial locking ring 51 and improving the locking effect between the valve stem 2 and the radial locking ring 51. The concave portion of the claws also engages with the groove at the end of the valve stem, ensuring uniform pressure on the valve stem 2 and a better connection. A positioning groove 521 is located at the center of the top surface of the diaphragm clamping sleeve 52. When the valve stem 2 is engaged with the radial locking ring 51, the bottom end of the valve stem 2 is embedded in the positioning groove 521.

[0023] The fluid channel 31 includes an inlet 311, an outlet 312, and a sealing surface 313. The inlet 311 and outlet 312 are respectively arranged parallel to each other on both sides of the sealing surface 313. The flexible diaphragm 53 is aligned with the sealing surface 313. When the flexible diaphragm 53 is closed downwards, it presses against the sealing surface 313, thus closing the fluid channel 31. In the locked state, the actuator guide mechanism 1 drives the quick-release diaphragm mechanism 5 downwards via the valve stem 2, causing the flexible diaphragm 53 to close and seal the fluid channel 31.

[0024] The actuator guide mechanism 1 includes a housing 11, an inner cavity 12, and a guide hole 13. The housing 11 is threadedly locked to the valve cover 4. The guide hole 13 is provided in the center of the housing 11. The inner cavity 12 is located inside the housing 11. The guide hole 13 and the inner cavity 12 are connected. The upper end of the valve stem 2 is stuck in the inner cavity 12. The valve stem 2 extends downward through the guide hole 13 out of the housing 11 and into the valve cover 4. The valve stem 2 is a pneumatic valve stem. A return spring 14 is connected between the valve stem 2 and the top surface of the inner cavity.

[0025] The operation process of this utility model is as follows: The valve stem 2 and the quick-release diaphragm mechanism 5 are assembled. The end of the valve stem 2 is inserted into the radial locking ring 51, and the end of the radial locking ring 51 slides into the groove 21 of the valve stem 2. The elastic clamping ring 54 and the radial locking ring 51 together apply a radial clamping force to the groove 21, so that the radial locking ring 51 and the valve stem 2 are locked together. The execution guide mechanism 1 drives the valve stem 2 and the quick-release diaphragm mechanism 5 to move up and down in the valve cover 4. When the quick-release diaphragm mechanism 5 is pressed down, the flexible diaphragm 53 can press the sealing surface 313 of the fluid channel 31, closing the fluid channel 31. When the flexible diaphragm 53 moves upward and disengages from the sealing surface, the fluid channel 31 opens. When it is necessary to replace the old quick-release diaphragm mechanism 5, simply grasp the flexible diaphragm 53 and pull it outward, and the radial locking ring 51 can be disengaged from the valve stem 2. The new quick-release diaphragm mechanism 5 can then be inserted and put into use. The operation time is very short, which can effectively shorten the downtime and improve production efficiency.

[0026] The above descriptions are merely several preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations and substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A quick-release valve diaphragm connection structure, characterized in that: The device includes an actuator guide mechanism, a valve stem, a valve body, a valve cover, and a quick-release diaphragm mechanism. The valve cover has a cylindrical structure, with the actuator guide mechanism fixedly connected to the upper end and the valve body fixedly connected to the lower end. The valve body has a fluid channel. The actuator guide mechanism is connected to a valve stem that extends downward along the central axis of the valve cover. The quick-release diaphragm mechanism is located inside the valve cover and is detachably connected to the bottom end of the valve stem. The quick-release diaphragm mechanism includes a radial locking ring, a diaphragm clamping sleeve, and a flexible diaphragm. The radial locking ring is fixedly connected to the top of the diaphragm clamping sleeve, and the flexible diaphragm is fixedly connected to the bottom of the diaphragm clamping sleeve. The end of the valve stem is aligned with the radial locking ring. The valve stem locks and unlocks with the radial locking ring through an insertion and removal action. In the locked state, the actuator guide mechanism drives the quick-release diaphragm mechanism downward through the valve stem, causing the flexible diaphragm to close and seal the fluid channel.

2. The quick-release valve diaphragm connection structure according to claim 1, characterized in that: The diaphragm clamping sleeve is made of metal or engineering plastic. The flexible diaphragm is connected to the bottom of the diaphragm clamping sleeve by embedding or injection molding. The flexible diaphragm and the diaphragm clamping sleeve are coaxially arranged.

3. The quick-release valve diaphragm connection structure according to claim 1, characterized in that: The radial locking ring sleeve has a ring of claws. The roots of all the claws are connected to the top surface of the diaphragm clamping sleeve around the central axis. The radial locking ring sleeve and the diaphragm clamping sleeve are integrally formed. The ends of all the claws extend upward and form a ring. The bottom end of the valve stem extends into one of the claws. The ring of claws applies a radial force to the valve stem to lock the valve stem.

4. The quick-release valve diaphragm connection structure according to claim 3, characterized in that: The valve stem end is provided with a groove, and the end of each claw is recessed inward. The inner side of the claw is formed with a convex ring that can be locked in the groove of the valve stem, and the outer side of the claw is formed with a circular groove. An elastic clamping ring is provided in the circular groove.

5. The quick-release valve diaphragm connection structure according to claim 4, characterized in that: The diaphragm clamping sleeve has a positioning groove at the center of its top surface. When the valve stem is clamped with the radial locking ring, the bottom end of the valve stem is embedded in the positioning groove.

6. The quick-release valve diaphragm connection structure according to claim 1, characterized in that: The fluid channel includes an inlet, an outlet, and a sealing surface. The inlet and outlet are respectively arranged parallel to each other on both sides of the sealing surface. The flexible diaphragm is aligned with the sealing surface. When the flexible diaphragm is closed downwards, it is pressed against the sealing surface to close the fluid channel.

7. The quick-release valve diaphragm connection structure according to claim 1, characterized in that: The actuator guide mechanism includes a housing, an inner cavity, and a guide hole. The housing and the valve cover are threaded together. The housing has a guide hole at its center. The inner cavity is located inside the housing and is connected to the guide hole. The upper end of the valve stem is locked in the inner cavity. The valve stem extends downward through the guide hole and into the valve cover. The valve stem is a pneumatic valve stem. A return spring is connected between the valve stem and the top surface of the inner cavity.

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