A control valve convenient to disassemble

Abstract

The utility model discloses a control valve convenient to dismount, including valve body, valve cover and valve core module. The installation port of valve body upper end is equipped with the L shape guide groove and locking recess. The valve cover rotatably sits on the installation port, and its lower surface is equipped with the guide pin and radial spring clamping block. The valve core module integrates the valve core, valve rod and sealing element, and can be taken out from the valve body as a whole. When installing, the guide pin of valve cover is put into the straight groove section of L shape guide groove, and then the valve cover is rotated, so that the radial spring clamping block is compressed under the action of the slope, and is popped into the locking recess after rotating in place, realizing quick locking. When dismounting, the radial spring clamping block is pulled out of the recess through the unlocking ring on the valve cover, and reverse operation can be carried out. The utility model realizes the quick, tool-free dismounting of the control valve through the rotary buckle and modular design, and has the advantages of simple structure, convenient operation and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of fluid control technology, and more specifically, to a control valve that is easy to disassemble and assemble. Background Technology

[0002] Control valves are key components in fluid transport systems, used to regulate the flow rate and pressure of the medium. In industrial maintenance, it is often necessary to disassemble, inspect, or replace internal components such as the valve core of the control valve.

[0003] Chinese patent document CN114738508B discloses a hydraulic control valve that is easy to install and disassemble. It uses a complex linkage mechanism comprising components such as a gear telescopic rod, rack, multiple trapezoidal gears, and a toothed retaining plate to achieve valve installation locking and valve core actuation. While this solution allows for quick installation and disassembly, the large number of components in the locking mechanism and the complex transmission chain result in extremely high requirements for machining and assembly precision, leading to high manufacturing costs. Furthermore, under long-term use or harsh operating conditions, multiple moving parts in this mechanism (such as gear meshing points and sliding fits) are prone to wear and jamming, causing the entire locking or actuation function to fail, resulting in low reliability. Therefore, a control valve with a simpler structure, more convenient operation, and higher reliability that is easier to install and disassemble is needed. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a control valve that is simple in structure, easy to operate, highly reliable, and easy to disassemble and assemble.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A control valve that is easy to assemble and disassemble includes a valve body, a valve cover, and a valve core module. The upper end of the valve body has an mounting port, and the periphery of the mounting port has at least one upwardly protruding latch. The inner wall of the latch has an L-shaped guide groove and a locking groove. The L-shaped guide groove is composed of a connected axial straight groove section and a circumferential arc groove section. The locking groove is located at the end of the circumferential arc groove section. The valve cover is detachably fitted onto the mounting port. Guide pins corresponding to the number and position of the latches are fixed on the lower surface of the valve cover. The guide pins are slidably disposed within the L-shaped guide groove. The valve cover is also provided with a radial locking mechanism, which includes a radially movable locking block, a compression spring with an outward popping tendency for the locking block, and an unlocking ring for driving the locking block to retract inward. When the guide pin slides to the end along the circumferential arc groove, the locking block is embedded in the locking groove under the action of the compression spring. The valve core module is located in the inner cavity of the valve body. The upper end of the valve core module is connected to a valve stem. The upper end of the valve stem passes through the valve cover and is connected to an operating handle. The valve cover is pressed against the upper end of the valve core module.

[0006] As an improvement of this utility model, the radial locking mechanism further includes a block receiving cavity opened inside the valve cover, the block and the compression spring are disposed in the block receiving cavity, the unlocking ring is sleeved on the outside of the valve cover and can slide axially, and the inner wall of the unlocking ring is connected to the block through a connecting rod.

[0007] As an improvement of this utility model, a status indicator sleeve is provided on the upper part of the valve cover. The status indicator sleeve is circumferentially fixed to the valve cover and can rotate synchronously. The outer surface of the status indicator sleeve is provided with visual markings for indicating the locking status of the valve cover.

[0008] As an improvement of this utility model, the valve body is provided with a fixed indicator corresponding to the status indicator sleeve.

[0009] As an improvement of this utility model, the upper end of the valve stem has a non-circular cross-section and is inserted into a non-circular sleeve provided in the operating handle. The side wall of the non-circular sleeve has a threaded hole, and a locking screw is screwed into the threaded hole and abuts against the valve stem.

[0010] The yarn feeding and drying device provided by this utility model has the following beneficial effects: This invention achieves initial positioning and guidance of the valve cover through the cooperation of a guide pin and an L-shaped guide groove, and achieves locking through the cooperation of a radial spring block and a locking groove. During installation, simply align and rotate until in place; during disassembly, simply pull up the unlocking ring and rotate in the opposite direction. The entire process requires no tools, is simple, and greatly improves maintenance efficiency.

[0011] This invention integrates the valve core, the lower end of the valve stem, and related sealing components into a single valve core module. When maintenance is required, the entire valve core module can be directly removed from the valve body after opening the valve cover, and a spare module can be installed, thus shortening equipment downtime and reducing the professional skills required for maintenance personnel.

[0012] This invention, by setting a status indicator sleeve linked to the valve cover and a fixed indicator on the valve body, allows the operator to clearly determine whether the valve cover is in the correct locking state, thus avoiding safety hazards caused by improper locking. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of point A; Figure 3 This is a partial schematic diagram of the valve cover.

[0014] List of identifiers in attached diagrams: 1. Valve body; 11. Mounting port; 12. Bayonet; 121. L-shaped guide groove; 121a. Axial straight groove section; 121b. Circumferential arc groove section; 122. Locking groove; 13. Fixed indicator; 2. Valve cover; 21. Guide pin; 22. Locking block; 23. Compression spring; 24. Unlocking ring; 25. Locking block receiving cavity; 26. Connecting rod; 31. Valve stem; 32. Operating handle; 33. Non-circular sleeve; 34. Locking screw; 4. Status indicator sleeve; 41. Visual mark. Detailed Implementation

[0015] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0016] Furthermore, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] As shown in the figure, the present invention provides a control valve that is easy to assemble and disassemble, which mainly consists of three parts: valve body 1, valve cover 2, and valve core module.

[0018] The valve body 1 is the main body of the fluid passage, and its left and right ends are usually provided with flanges for connection to pipelines (not fully shown in the figure). A circular mounting port 11 is opened at the upper end of the valve body 1. In this embodiment, two upwardly protruding bayonet portions 12 are symmetrically arranged around the periphery of the mounting port 11. Each bayonet portion 12 has an L-shaped guide groove 121 and a locking groove 122 machined on its inner sidewall. The L-shaped guide groove 121 is composed of a vertical axial straight groove section 121a and a circumferential arc groove section 121b that communicates with it and is in a clockwise direction. The locking groove 122 is a blind hole, and its position corresponds to the end of the circumferential arc groove section 121b. A fixed indicator 13 is also provided on the outer wall of the valve body 11.

[0019] The valve cover 2 is a disc-shaped component used to close the mounting port 11 of the valve body 1. Two guide pins 21 are fixedly installed on the lower surface of the valve cover 2, corresponding to the positions of the two latches 12 of the valve body 1. The valve cover 2 has an internal radial locking mechanism. This mechanism includes a radially opening latch receiving cavity 25, within which a radially movable latch 22 and a compression spring 23 are disposed. The compression spring 23 always applies an outward elastic force to the latch 22. An unlocking ring 24 is fitted around the outside of the valve cover 2 and can slide up and down along the axial direction of the valve cover 2. The inner wall of the unlocking ring 24 is connected to the inner end of the latch 22 via a connecting rod 26. When the unlocking ring 24 is lifted upwards, the connecting rod 26 overcomes the elastic force of the compression spring 23, pulling the latch 22 back into the latch receiving cavity 25. A status indicator sleeve 4 is also tightly fitted to the upper part of the valve cover 2. This sleeve is circumferentially fixed to the valve cover 2 and can rotate with the valve cover 2. The outer surface of the status indicator sleeve 44 is printed with green "locked" and red "unlocked" as visual markers 41.

[0020] The valve core module is an independent functional unit pre-assembled with the valve core, the lower end of the valve stem 31, and related seals. The upper end of the valve stem 31 passes through a through hole in the center of the valve cover 2, and its top end is machined into a square (or other non-circular cross-section). An operating handle 32 is fitted onto the square end of the valve stem 31 through an internal non-circular sleeve 33 (such as a square-hole sleeve). The side wall of the non-circular sleeve 33 has a threaded hole, into which a locking screw 34 is screwed and pressed against the valve stem 31, thereby achieving a fixed connection between the operating handle 32 and the valve stem 31. When the valve cover 2 is installed in place, its lower surface presses against the upper surface of the valve core module to ensure its stability during operation.

[0021] Specifically, the working principle of this utility model is as follows: During installation, first place the valve core module into the inner cavity of the valve body 11. Then align the two guide pins 21 below the valve cover 2 with the axial straight groove sections 121a inside the two bayonet portions 12 on the valve body 1, and then lower the valve cover 2 until it sits on the mounting port 11. Rotate the valve cover 2 (and the status indicator sleeve 4 fixed thereto) clockwise. The guide pins 21 then move from the axial straight groove section 121aa into the circumferential arc groove section 121b and slide to the end. During this rotation, the head of the locking block 22 will contact and be pressed against the inner wall of the bayonet portion 12, temporarily retracting the compression spring 23.

[0022] When the guide pin 21 reaches the end of the circumferential arc groove section 121b, the locking block 22 is precisely aligned with the locking groove 122. Under the action of the compression spring 23, it quickly pops out and embeds itself into the locking groove 122, accompanied by a clear "click" sound. At this moment, the green "locked" mark on the status indicator sleeve 4 is precisely aligned with the fixed indicator mark 13 on the valve body 1. The valve cover 2 is securely locked, and the installation is complete.

[0023] During disassembly, first lift the unlocking ring 24 upwards, and pull the locking block 22 out of the locking groove 122 via the connecting rod 26, retracting it completely into the locking block receiving cavity 25. Then, rotate the valve cover 2 counterclockwise, causing the guide pin 21 to return along the path of the circumferential arc groove section 121b and the axial straight groove section 121a. Lift the valve cover 2 upwards to remove it from the valve body 1. Subsequently, the entire valve core module can be directly removed from the valve body 1 for replacement or maintenance. The attached drawings merely illustrate the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, various improvements and modifications can be made without departing from the principle of this utility model, and all such improvements and modifications fall within the scope of protection of the claims of this utility model.

Claims

1. A control valve that is easy to assemble and disassemble, comprising a valve body, a valve cover, and a valve core module, characterized in that: The valve body has an installation port at its upper end, and at least one upwardly protruding latch at the periphery of the installation port. The inner wall of the latch has an L-shaped guide groove and a locking groove. The L-shaped guide groove is composed of a connected axial straight groove section and a circumferential arc groove section. The locking groove is located at the end of the circumferential arc groove section. The valve cover is detachably fitted onto the installation port. The lower surface of the valve cover is fixed with guide pins corresponding to the number and position of the latches. The guide pins are slidably disposed in the L-shaped guide groove. The valve cover also has a radial locking mechanism inside. The radial locking mechanism includes a locking block, a compression spring, and an unlocking ring. The valve core module is disposed in the inner cavity of the valve body. The upper end of the valve core module is connected to a valve stem. The upper end of the valve stem passes through the valve cover and is connected to an operating handle. The valve cover is pressed against the upper end of the valve core module.

2. The control valve for easy disassembly and assembly according to claim 1, characterized in that: The radial locking mechanism further includes a block receiving cavity opened inside the valve cover. The block and the compression spring are disposed in the block receiving cavity. The unlocking ring is sleeved on the outside of the valve cover and can slide axially. The inner wall of the unlocking ring is connected to the block through a connecting rod.

3. The control valve for easy disassembly and assembly according to claim 2, characterized in that: A status indicator sleeve is fitted on the upper part of the valve cover. The status indicator sleeve is circumferentially fixed to the valve cover and can rotate synchronously. The outer surface of the status indicator sleeve is provided with visual markings for indicating the locking status of the valve cover.

4. The control valve for easy disassembly and assembly according to claim 3, characterized in that: The valve body is provided with a fixed indicator corresponding to the status indicator sleeve.

5. The control valve for easy disassembly and assembly according to claim 1, characterized in that: The upper end of the valve stem has a non-circular cross-section and is inserted into a non-circular sleeve located inside the operating handle. The side wall of the non-circular sleeve has a threaded hole, and a locking screw is screwed into the threaded hole and abuts against the valve stem.

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