Gate valve position switch mounting structure

Abstract

The utility model discloses a gate valve position switch mounting structure, including valve body, valve cover, valve rod and hand wheel, the valve cover is fixedly connected with L type mounting seat, and L type mounting seat is set with the slide in the direction of own height, one side fixedly connected with trigger rod of valve rod's correspondence slide, and one end of trigger rod is solid -connected with valve rod, and the other end is slidably arranged in the slide, the upper and lower both ends of the correspondence slide on L type mounting seat all are assembled with the limit switch for inductive detection trigger rod. This technical scheme sets up L type mounting seat outside the gate valve and is convenient for the quick installation of valve position switch, the later period maintenance, on -the -spot debugging.

Description

Technical Field

[0001] This utility model relates to a gate valve position switch installation structure. Background Technology

[0002] Gate valves, as commonly used opening and closing devices in pipeline systems, usually require limit switches in automated control scenarios to provide real-time feedback on whether the valve is fully open or fully closed. In existing technologies, limit switches are typically integrated into the valve cover chamber. When the valve stem drives the gate to rise and fall to open or close, the limit switch is triggered through a transmission structure such as a lever to complete the signal feedback. However, due to the limited space in the chamber, this integrated method makes it very inconvenient to disassemble and replace the limit switch. The entire valve cover needs to be removed for inspection and maintenance, which prolongs the time for troubleshooting. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a gate valve position switch installation structure to facilitate the rapid installation, subsequent maintenance and on-site debugging of the valve position switch.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a gate valve position switch installation structure, including a valve body, a valve cover, a valve stem, and a handwheel. An L-shaped mounting base is fixedly connected to the valve cover. The L-shaped mounting base has a slide rail along its height direction. A trigger rod is fixedly connected to one side of the valve stem corresponding to the slide rail. One end of the trigger rod is fixedly connected to the valve stem, and the other end slides through the slide rail. Limit switches for sensing and detecting the trigger rod are installed at both the upper and lower ends of the L-shaped mounting base corresponding to the slide rail.

[0005] As a further improvement of this utility model, the L-shaped mounting base includes a mounting part and a connecting part. The mounting part is used to assemble a limit switch to achieve inductive cooperation with the trigger rod. The connecting part is fixedly connected to the valve cover to avoid structural interference between the handwheel and the mounting part.

[0006] As a further improvement of this utility model, the connecting part is provided with a connecting hole corresponding to the valve cover mounting hole, and the connecting part, valve cover and valve body are connected together by fasteners.

[0007] As a further improvement of this utility model, the end of the trigger rod that is fixedly connected to the valve rod is provided with an adjustment groove, which extends along the length of the trigger rod.

[0008] As a further improvement of this utility model, the L-shaped mounting base is integrally formed.

[0009] The beneficial effects of this utility model are: by setting an L-shaped mounting seat on the outside of the gate valve, it is convenient to quickly install the valve position switch, carry out subsequent maintenance, and conduct on-site debugging. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0011] Reference numerals: 1. Valve body; 2. Valve cover; 3. Valve stem; 4. Handwheel; 5. L-shaped mounting base; 6. Slide rail; 7. Trigger rod; 8. Limit switch; 9. Mounting part; 10. Connecting part; 11. Adjusting groove. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0013] Reference Figure 1-2 As shown, a gate valve position switch mounting structure includes a valve body 1, a valve cover 2, a valve stem 3, and a handwheel 4. An L-shaped mounting base 5 is fixedly connected to the valve cover 2. The L-shaped mounting base 5 has a slide rail 6 along its height direction. A trigger rod 7 is fixedly connected to one side of the valve stem 3 corresponding to the slide rail 6. One end of the trigger rod 7 is fixedly connected to the valve stem 3, and the other end slides through the slide rail 6. Limit switches 8 for sensing and detecting the trigger rod 7 are installed on both the upper and lower ends of the L-shaped mounting base 5 corresponding to the slide rail 6.

[0014] The L-shaped mounting base 5 is fixedly connected to the surface of the valve cover 2, providing a mounting carrier for the slide rail 6 and the limit switch 8. One end of the trigger rod 7 is fixedly connected to the outer circumference of the valve stem 3, with the connection position corresponding to the opening position of the slide rail 6; the other end of the trigger rod 7 extends into the interior of the slide rail 6, forming a sliding fit with the inner wall of the slide rail 6. The slide rail 6 extends along the height direction of the L-shaped mounting base 5, providing guidance and constraint to the movement path of the trigger rod 7 and limiting its offset. When the handwheel 4 receives external force, it drives the valve stem 3 to move up and down axially, and the valve stem 3 simultaneously drives the trigger rod 7 to reciprocate along the extension direction of the slide rail 6. When the trigger rod 7 moves with the valve stem 3 to the corresponding position at the upper end of the slide rail 6, the limit switch 8 located at the upper end of the slide rail 6 senses the position signal of the trigger rod 7, corresponding to the fully open valve position of the gate valve; when the trigger rod 7 moves with the valve stem 3 to the corresponding position at the lower end of the slide rail 6, the limit switch 8 located at the lower end of the slide rail 6 senses the position signal of the trigger rod 7, corresponding to the fully closed valve position of the gate valve. The guiding effect of the slide rail 6 on the trigger rod 7 can improve the stability of the movement of the trigger rod 7, reduce the probability of radial wobble of the trigger rod 7, and thus improve the accuracy of the valve position detection of the limit switch 8. The structure of the L-shaped mounting base 5 can be adapted to the side mounting space of the valve cover 2, making the overall installation quick and convenient, and facilitating on-site debugging and subsequent maintenance.

[0015] The L-shaped mounting base 5 includes a mounting part 9 and a connecting part 10. The mounting part 9 is used to assemble the limit switch 8 to achieve sensing cooperation with the trigger rod 7. The connecting part 10 is fixedly connected to the valve cover 2 to avoid structural interference between the handwheel 4 and the mounting part 9.

[0016] The mounting section 9 and the connecting section 10 are arranged in a vertically bent L-shape, creating a spatial misalignment between the rotation path of the limit switch 8 mounted on the mounting section 9 and the handwheel 4. The slide rail 6 is opened along the height direction of the mounting section 9, and the end of the trigger rod 7 extends into the slide rail 6, forming a sliding fit with the inner wall of the slide rail 6. Two limit switches 8 are respectively mounted on the mounting section 9 at the upper and lower ends of the corresponding slide rail 6, maintaining a preset sensing distance from the trigger rod 7 within the slide rail 6. During the process of the handwheel 4 driving the valve stem 3 to rise and fall, the extended structure of the connecting section 10 allows the mounting section 9 and the limit switches 8 to avoid the rotation range of the handwheel 4, preventing the risk of structural interference between the handwheel 4 and the mounting section 9 and the limit switches 8 during rotation, thus improving the reliability of the structure. The mounting section 9 centrally houses the mounting positions of the slide rail 6 and the limit switches 8, improving the integration of component installation and facilitating overall assembly and subsequent maintenance.

[0017] The connecting part 10 has connecting holes corresponding to the mounting holes of the valve cover 2. The connecting part 10, the valve cover 2, and the valve body 1 are connected together by fasteners. The position and diameter of the connecting holes on the connecting part 10 correspond one-to-one with the original mounting holes of the valve cover 2. After the fasteners pass through the connecting holes of the connecting part 10 and the mounting holes of the valve cover 2 in sequence, they form a tight fit with the corresponding connecting positions on the valve body 1, so that the connecting part 10, the valve cover 2, and the valve body 1 form a synchronous locking connection. This connection method does not require additional machining of new mounting holes on the valve cover 2. The existing fasteners connecting the valve body 1 and the valve cover 2 of the gate valve can be used to achieve synchronous fixing of the L-shaped mounting seat 5, simplifying the installation steps of the mounting seat, reducing the modification of the original valve cover 2 structure, and the connection form of the three fasteners together can improve the connection strength and anti-loosening ability of the L-shaped mounting seat 5.

[0018] The trigger rod 7, fixedly connected to the valve stem 3, has an adjusting groove 11 extending along the length of the trigger rod 7. The trigger rod 7 forms an adjustable fixed connection with the valve stem 3 via the adjusting groove 11. Fasteners pass through the adjusting groove 11 and lock into the corresponding connection position of the valve stem 3, thus achieving relative fixation between the trigger rod 7 and the valve stem 3. The adjusting groove 11 extends along the length of the trigger rod 7; loosening the fasteners allows adjustment of the radial extension length of the trigger rod 7 relative to the valve stem 3. Adjusting the extension length of the trigger rod 7 via the adjusting groove 11 allows for adaptation to different specifications of valve stem 3 and the spacing between them and the L-shaped mounting base 5, improving the applicability of the installation structure.

[0019] The L-shaped mounting base 5 is integrally molded. The L-shaped mounting base 5 is manufactured using an integral molding process. The integral molding structure can improve the structural strength and deformation resistance of the L-shaped mounting base 5, and reduce the possibility of deformation and cracking of the mounting base during long-term use.

[0020] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A gate valve position switch mounting structure, comprising a valve body, a valve cover, a valve stem, and a handwheel, characterized in that, An L-shaped mounting base is fixedly connected to the valve cover. The L-shaped mounting base has a slide rail along its height. A trigger rod is fixedly connected to one side of the valve stem corresponding to the slide rail. One end of the trigger rod is fixedly connected to the valve stem, and the other end slides through the slide rail. Limit switches for sensing and detecting the trigger rod are installed at both the upper and lower ends of the L-shaped mounting base corresponding to the slide rail.

2. The gate valve position switch mounting structure according to claim 1, characterized in that, The L-shaped mounting base includes a mounting part and a connecting part. The mounting part is used to assemble a limit switch to achieve sensing cooperation with the trigger rod. The connecting part is fixedly connected to the valve cover to avoid structural interference between the handwheel and the mounting part.

3. The gate valve position switch mounting structure according to claim 2, characterized in that, The connecting part has a connecting hole corresponding to the valve cover mounting hole, and the connecting part, valve cover and valve body are connected together by fasteners.

4. The gate valve position switch mounting structure according to claim 1, characterized in that, The end of the trigger rod that is fixedly connected to the valve stem is provided with an adjustment groove, which extends along the length of the trigger rod.

5. The gate valve position switch mounting structure according to claim 1, characterized in that, The L-shaped mounting base is integrally molded.

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