Improved valve rod structure

Abstract

The invention relates to the technical field of valve rods, and discloses an improved valve rod structure which comprises a valve rod body and a valve element, an anti-misoperation assembly is arranged outside the valve rod body and comprises a bottom block, a spring and a connecting frame, and the bottom block is connected with a sliding rod through a sliding barrel. When the valve rod body does not need to be used, a worker manually slides a sliding rod into a hole in the surface of the valve rod body, in the process, a fixing block and the sliding rod move to enable a spring to stretch out and draw back, meanwhile, a clamping block is clamped into a clamping groove in the upper surface of a sliding barrel to limit rotation of the valve rod, and when the valve rod body needs to be used, the worker presses a pressing block downwards to press the clamping block out of the clamping groove, and the valve rod body is fixed. The spring extends, the sliding rod moves out of the hole, the valve rod body can be used at the moment, the possibility that the valve body is opened or closed by mistake due to accidental rotation of the valve rod body can be avoided, and safety and stability of a system are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of valve stems, and in particular to an improved valve stem structure. Background Art

[0002] In the modern industrial field, valves are key components for controlling fluid flow, and their performance and reliability directly affect the safety, stability and efficiency of the entire process. As the core transmission component of the valve, the valve stem has the important mission of transmitting the external operating force to the valve core to open, close or adjust the valve.

[0003] After searching, the applicant found that a Chinese patent disclosed "a ball valve with an improved valve stem connection structure", and its publication (announcement) number is "CN212480207U". This patent mainly uses the simple installation process of the valve stem, the easy replacement and maintenance of the fixing cap, and the valve stem is pressed toward the fixing cap by the elastic component. Due to the frustum-shaped channel structure in the fixing cap, the sealing effect between the valve stem and the fixing cap can be guaranteed. However, this patent cannot prevent the valve stem from accidentally rotating. Therefore, in actual use, the valve stem may rotate unexpectedly due to unintentional external touch, equipment vibration or other unforeseen interference factors. For this reason, we propose an improved valve stem structure. Summary of the invention

[0004] The purpose of the present invention is to provide an improved valve stem structure to solve the problem proposed in the above background technology that the valve stem cannot be prevented from accidentally rotating. In actual use, the valve stem may rotate unexpectedly due to unintentional external touch, equipment vibration or other unforeseen interference factors.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an improved valve stem structure, comprising a valve stem body and a valve core, the outside of the valve stem body is provided with an anti-misoperation component, the anti-misoperation component comprises a bottom block, a spring and a connecting frame, the bottom block is connected to a sliding rod through a sliding cylinder, the sliding rod is connected to a clamping block through a fixed block, and the connecting frame is connected to a connecting plate and a pressing block through an elastic member.

[0006] As a preferred solution, the slide cylinder is fixedly installed on the inner wall of the bottom block, the slide rod is slidably connected to the inner wall of the slide cylinder, the fixed block is fixedly connected to the upper surface of the slide rod, and the right end of the clamping block is rotatably connected to the left inner wall of the fixed block.

[0007] As a preferred solution, the left end of the spring is fixedly connected to the right side of the fixed block, and the other end of the spring is fixedly connected to the inner bottom wall of the slide cylinder.

[0008] As a preferred solution, the connection frame is fixedly mounted on the upper surface of the slide cylinder, the connection plate is fixedly connected to the outer wall of the pressing block, and the upper end of the elastic member is fixedly connected to the bottom of the connection plate.

[0009] As a preferred solution, the lower end of the elastic member is fixedly connected to the inner bottom wall of the connecting frame, and the outer wall of the connecting plate is slidably connected to the inner wall of the connecting frame.

[0010] As a preferred solution, a pressing hole adapted to a pressing block is provided on the top of the connecting frame, a card slot adapted to a card block is provided on the upper surface of the sliding cylinder, and a hole is provided at the bottom of the connecting frame for the pressing block to press downward and extend.

[0011] As a preferred solution, a handle assembly is provided on the top of the valve stem body, and the handle assembly includes a connecting block, a screw and a handle, and a threaded groove is provided on the top of the connecting block.

[0012] As a preferred solution, the screw is threadedly connected to the inside of the thread groove, the top of the screw is fixedly connected to a thread block, the top of the thread block is fixedly connected to a fixing rod, and the left end of the handle is rotatably connected to the outer walls of both sides of the fixing rod.

[0013] The technical effects and advantages of the present invention are as follows: through the anti-misoperation component, when the valve stem body is not needed, the staff manually slides the sliding rod into the hole on the surface of the valve stem body. During this process, the fixed block and the sliding rod move to make the spring expand and contract, and the card block is stuck in the card groove on the upper surface of the slide tube to limit the rotation of the valve stem. When the valve stem body needs to be used, the staff presses the pressing block downward to press the card block out of the card groove, the spring expands, and the sliding rod moves out of the hole. At this time, the valve stem body can be used, which can avoid the possibility of the valve body being opened or closed by mistake due to accidental rotation of the valve stem body, ensuring the safety and stability of the system. Through the provided handle component, the staff manually rotates the threaded block, and the handle can be quickly installed and fixed to the top of the valve stem body through the cooperation of the screw and the threaded groove. When the valve stem body needs to be rotated, through the rotational connection relationship between the fixed rod and the handle, even in a narrow space or an area with obstacles, the staff can rotate the handle to an appropriate angle to avoid obstacles, so that the staff can apply force to rotate the valve stem body in a more comfortable and efficient posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of the anti-misoperation component of the present invention;

[0016] Figure 3 This is one of the partial structural schematic diagrams of the anti-misoperation component of the present invention;

[0017] Figure 4 This is the second schematic diagram of the structure of the anti-misoperation component of the present invention;

[0018] Figure 5 It is a schematic diagram of the structure of the handle assembly of the present invention;

[0019] Figure 6 This is one of the partial structural schematic diagrams of the handle assembly of the present invention.

[0020] In the figure: 1. valve stem body; 2. valve core; 3. anti-misoperation assembly; 301. bottom block; 302. slide cylinder; 303. slide rod; 304. fixing block; 305. clamping block; 306. spring; 307. connecting frame; 308. pressing block; 309. elastic member; 310. connecting plate; 4. handle assembly; 401. connecting block; 402. threaded groove; 403. screw; 404. threaded block; 405. fixing rod; 406. handle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1:

[0023] Please see attached Figure 1 - Attachment Figure 4An improved valve stem structure includes a valve stem body 1 and a valve core 2. An anti-misoperation component 3 is arranged outside the valve stem body 1. The anti-misoperation component 3 includes a bottom block 301, a spring 306 and a connecting frame 307. The bottom block 301 is connected to a slide rod 303 through a slide cylinder 302. The slide rod 303 is connected to a clamping block 305 through a fixed block 304. The connecting frame 307 is connected to a connecting plate 310 and a pressing block 308 through an elastic member 309. The slide cylinder 302 is fixedly installed on the inner wall of the bottom block 301. The slide rod 303 is slidably connected to the inner wall of the slide cylinder 302. The fixed block 304 is fixedly connected to the upper surface of the slide rod 303. The right end of the clamping block 305 is rotatably connected to the left inner wall of the fixed block 304. The spring 306 is The left end is fixedly connected to the right side of the fixed block 304, the other end of the spring 306 is fixedly connected to the inner bottom wall of the slide 302, the connecting frame 307 is fixedly installed on the upper surface of the slide 302, the connecting plate 310 is fixedly connected to the outer wall of the pressing block 308, the upper end of the elastic member 309 is fixedly connected to the bottom of the connecting plate 310, the lower end of the elastic member 309 is fixedly connected to the inner bottom wall of the connecting frame 307, the outer wall of the connecting plate 310 is slidably connected to the inner wall of the connecting frame 307, a pressing hole adapted to the pressing block 308 is provided at the top of the connecting frame 307, a card slot adapted to the card block 305 is provided on the upper surface of the slide 302, and a hole is provided at the bottom of the connecting frame 307 for the pressing block 308 to press downward and extend out.

[0024] The valve stem surface is provided with a hole for the slide rod 303 to slide into. After the slide rod 303 slides in, the valve stem body 1 cannot rotate. The bottom of the connecting frame 307 is provided with a hole for the pressing block 308 to press downward and extend out, so as to press the card block 305 out of the card slot.

[0025] Specifically, through the anti-misoperation component 3, when the valve stem body 1 is not needed, the staff manually slides the slide rod 303 into the hole on the surface of the valve stem body 1. During this process, the fixed block 304 and the slide rod 303 move to make the spring 306 expand and contract, and at the same time, the block 305 is inserted into the groove on the upper surface of the slide cylinder 302 to limit the rotation of the valve stem. When the valve stem body 1 needs to be used, the staff presses the pressing block 308 downward to press the block 305 out of the groove, the spring 306 extends, and the slide rod 303 moves out of the hole. At this time, the valve stem body 1 can be used, which can avoid the possibility of the valve stem body 1 being opened or closed by mistake due to accidental rotation of the valve stem body 1, thereby ensuring the safety and stability of the system.

[0026] Embodiment 2:

[0027] Please see attached Figure 1 , Attachment Figure 5 And attached Figure 6, and on the basis of Example 1, it is further obtained that a handle assembly 4 is provided at the top of the valve stem body 1, the handle assembly 4 includes a connecting block 401, a screw 403 and a handle 406, a thread groove 402 is opened at the top of the connecting block 401, the screw 403 is threadedly connected to the inside of the thread groove 402, the top of the screw 403 is fixedly connected to a thread block 404, the top of the thread block 404 is fixedly connected to a fixing rod 405, and the left end of the handle 406 is rotatably connected to the outer walls of both sides of the fixing rod 405.

[0028] The left end of the handle 406 is fixedly connected to a connecting rod, which is rotatably connected to the inner wall of the fixed rod 405. The threaded block 404 is convenient for the staff to manually unscrew the screw 403 from the inside of the connecting block 401. The outside of the threaded block 404 is provided with threads, which can increase the friction with the staff's hand and make it more labor-saving when rotating.

[0029] Specifically, through the provided handle assembly 4, the staff manually rotates the threaded block 404, and through the cooperation of the screw 403 and the threaded groove 402, the handle 406 can be quickly installed and fixed on the top of the valve stem body 1. When the valve stem body 1 needs to be rotated, through the rotational connection between the fixed rod 405 and the handle 406, even in a narrow space or an area with obstacles, the staff can rotate the handle 406 to an appropriate angle to avoid obstacles, so that the staff can apply force to rotate the valve stem body 1 in a more comfortable and efficient posture.

[0030] Working principle of the present invention: The present invention is an improved valve stem structure. When the valve stem body 1 does not need to be operated, the staff first manually pushes the slide rod 303 to slide along the inner wall of the slide cylinder 302 toward the valve stem body 1. During the sliding process of the slide rod 303, the fixed block 304 moves with the slide rod 303. At this time, the spring 306 connected between the right side of the fixed block 304 and the inner bottom wall of the slide cylinder 302 is compressed. When the slide rod 303 slides into the hole pre-opened on the surface of the valve stem body 1, the block 305 is stuck in the groove on the upper surface of the slide cylinder 302. At this time, the valve stem body 1 The valve stem 307 is locked and cannot rotate, which effectively prevents the valve from malfunctioning due to unexpected factors. When the valve stem body 1 needs to be operated, the pressing block 308 is pressed downward, and the pressing block 308 drives the connecting plate 310 fixedly connected to its outer wall to move downward along the inner wall of the connecting frame 307. At this time, the elastic member 309 connected between the bottom of the connecting plate 310 and the inner bottom wall of the connecting frame 307 is compressed. As the pressing block 308 moves downward, the card block 305 is pressed out of the card slot through the hole opened at the bottom of the connecting frame 307, breaking away from the card slot constraint. At this time, the compressed spring 306 releases energy, stretches and pushes the fixing block 304, thereby driving the slide rod 303 to move out of the hole on the surface of the valve stem body 1, and the valve stem body 1 is unlocked. Next, the staff first fixes the connecting block 401 on the top of the valve stem body 1, holds the threaded block 404, aligns the screw 403 with the threaded groove 402 on the top of the connecting block 401, and manually rotates the threaded block 404 to drive the screw 403 to rotate in the threaded groove 402. As the screw 403 is continuously screwed in, the threaded block 404 gradually approaches the connecting block 401 until the handle 406 is firmly installed on the valve stem body 1. At the top of the valve stem body 1, when the valve stem body 1 needs to be rotated, the staff holds the handle 406 according to the actual operating space and the surrounding environment. If there is a narrow area or obstacle in the operating space, the staff can push the handle 406 to rotate around the rotation connection point between it and the fixed rod 405, and rotate the handle 406 to a suitable angle to avoid obstruction. Then, the staff applies a rotational force to the handle 406, and transmits the force to the valve stem body 1 through the handle 406, the fixed rod 405, the threaded block 404, the screw 403 and the connecting block 401, thereby realizing the rotation of the valve stem body 1.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved valve stem structure, comprising a valve stem body (1) and a valve core (2), characterized in that: An anti-misoperation component (3) is arranged on the outside of the valve stem body (1), and the anti-misoperation component (3) includes a bottom block (301), a spring (306) and a connecting frame (307). The bottom block (301) is connected to a sliding rod (303) via a sliding cylinder (302), and the sliding rod (303) is connected to a clamping block (305) via a fixing block (304). The connecting frame (307) is connected to a connecting plate (310) and a pressing block (308) via an elastic member (309).

2. An improved valve stem structure according to claim 1, characterized in that: The slide cylinder (302) is fixedly mounted on the inner wall of the bottom block (301), the slide rod (303) is slidably connected to the inner wall of the slide cylinder (302), the fixed block (304) is fixedly connected to the upper surface of the slide rod (303), and the right end of the clamping block (305) is rotatably connected to the left inner wall of the fixed block (304).

3. An improved valve stem structure according to claim 2, characterized in that: The left end of the spring (306) is fixedly connected to the right side of the fixed block (304), and the other end of the spring (306) is fixedly connected to the inner bottom wall of the slide cylinder (302).

4. An improved valve stem structure according to claim 3, characterized in that: The connecting frame (307) is fixedly mounted on the upper surface of the slide cylinder (302), the connecting plate (310) is fixedly connected to the outer wall of the pressing block (308), and the upper end of the elastic member (309) is fixedly connected to the bottom of the connecting plate (310).

5. An improved valve stem structure according to claim 4, characterized in that: The lower end of the elastic member (309) is fixedly connected to the inner bottom wall of the connection frame (307), and the outer wall of the connection plate (310) is slidably connected to the inner wall of the connection frame (307).

6. An improved valve stem structure according to claim 1, characterized in that: The top of the connection frame (307) is provided with a pressing hole adapted to the pressing block (308), the upper surface of the slide cylinder 302 is provided with a card slot adapted to the card block 305, and the bottom of the connection frame 307 is provided with a hole for the pressing block 308 to press downward and extend.

7. An improved valve stem structure according to claim 6, characterized in that: A handle assembly (4) is provided at the top of the valve stem body (1), and the handle assembly (4) comprises a connecting block (401), a screw (403) and a handle (406), and a threaded groove (402) is provided at the top of the connecting block (401).

8. An improved valve stem structure according to claim 7, characterized in that: The screw (403) is threadedly connected to the inside of the thread groove (402), the top of the screw (403) is fixedly connected to a thread block (404), the top of the thread block (404) is fixedly connected to a fixing rod (405), and the left end of the handle (406) is rotatably connected to the outer walls of both sides of the fixing rod (405).

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