Handle locker for instrument hand valve

By designing a handle locker for instrument hand valves, the clamping arm, limit baffle and limit button are used to solve the problem of unintentional opening of the hand valve handle, improving safety and simplifying operation .

CN222513763UActive Publication Date: 2025-02-21NINGBO HUATAI WEALTHY POLYMER MATERIAL LTD
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Patent Information

Application Number
CN202420177919.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-25
Publication Date
2025-02-21
Estimated Expiration
2034-01-25

AI Technical Summary

Technical Problem

The prior art is difficult to effectively prevent the instrument hand valve handle from being opened inadvertently, resulting in media leakage and safety hazards, and it is inconvenient to disassemble and install the hand valve handle.

Method used

A handle locker for instrument hand valves is designed to securely lock the hand valve handle through clamping arms, limit baffles, limit buttons and other structures, and to achieve convenient disassembly by operating the protrusions and guiding bevels.

Benefits of technology

It effectively prevents the hand valve handle from being opened unintentionally, reduces the risk of medium leakage, improves the safety of the instrument hand valve, and simplifies the disassembly and assembly process of the hand valve handle.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a handle locker for an instrument hand valve, the handle locker is detachably mounted on the instrument hand valve, the instrument hand valve comprises a valve body and a handle rotatably connected to the top surface of the valve body, and the handle comprises a handle part extending towards the side part of the valve body and a connecting part connected with the valve body. The top face of the valve body is further provided with a limiting protrusion protruding upwards at the position close to the connecting portion of the handle, the locker comprises a clamping arm used for being clamped on the periphery of the connecting portion of the handle, and the front portion of the clamping arm is provided with an installation opening allowing the connecting portion of the handle to slide backwards into the inner space of the clamping arm; the limiting baffle is connected to the side, away from the mounting opening of the clamping arm, of the clamping arm, the whole limiting baffle is L-shaped, and the limiting baffle comprises a first limiting plate and a second limiting plate, the first limiting plate horizontally extends and can be attached to the top face of the valve body, and the second limiting plate downwards extends from the rear side of the first limiting plate and can be attached to the rear side face of the valve body; and the limiting convex button is connected to the clamping arm, and the bottom of the limiting convex button is provided with a limiting hole which is matched with the limiting bulge and is used for allowing the limiting bulge to be inserted into the limiting hole from bottom to top. The locking device has the advantages that the handle of the instrument hand valve can be firmly locked through the locking device, and mounting and dismounting are convenient.
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Description

Technical Field

[0001] The utility model relates to the technical field of valve locking tools, in particular to a handle locker for an instrument hand valve, in particular to a handle locker for an instrument hand valve in a field instrument pressure-guiding system. Background Art

[0002] At present, in domestic petrochemical plants, for the measurement of flow, pressure, liquid level, etc. of the medium in the pipeline and container, the throttling original supporting the pressure pipe is mostly used to lead the medium to the on-site instrument detection diaphragm box. In such a pressure-leading system, there are many instrument maintenance hand valves on the pressure-leading pipelines such as upper venting and lower sewage discharge. When the instrument is operating normally, these hand valves are in a closed state. Only when the instrument is operating abnormally, the instrument professional maintenance personnel can open the hand valve to discharge the medium to maintain the instrument after obtaining the consent of the equipment operator and completing various procedures. If the hand valve is opened at will, the medium in the pipeline will be sprayed out. These media are mostly flammable, explosive, toxic and harmful. If they are discharged without measures, it is easy to cause poisoning of personnel or fire and explosion of the device. When the hand valve is closed, its valve handle is generally in a suspended state. Because the hand valve is installed at a low position, the corner of the clothes and trousers of the on-site workers are easy to hook the valve handle when passing by, causing the hand valve to be opened accidentally. Secondly, the handle in the suspended state will gradually open with the vibration of the on-site equipment. Furthermore, when on-site maintenance personnel are maintaining a valve nearby, the handle may easily open the valve due to slipping of the tool.

[0003] Therefore, in response to the above problems, after closing these hand valves, the field instrument maintenance personnel often remove the valve handles of the hand valves and store them, and then install them when needed to prevent the valves from malfunctioning. This brings a lot of inconvenience to the field maintenance personnel, and when removing and installing the handles, the tightening of the locking nut can easily drive the valves to open by mistake. The method of disassembling and installing the hand valve handles does not fundamentally eliminate the safety hazards, and poses a threat to the production safety of petrochemical production equipment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a handle locker for an instrument hand valve, which can reliably lock the handle of the instrument hand valve and is easy to disassemble, in view of the current status of the prior art.

[0005] The utility model solves the above technical problems by adopting the following technical solution: a handle locker for an instrument hand valve, which can be detachably mounted on the instrument hand valve. The instrument hand valve comprises a valve body and a handle rotatably connected to the top surface of the valve body. The handle comprises a grip portion extending toward the side of the valve body and a connecting portion connected to the valve body. The top surface of the valve body is provided with a limit protrusion protruding upward at a position adjacent to the connecting portion of the handle. The locker comprises:

[0006] A clamping arm, used for clamping the outer periphery of the connecting portion of the handle, and having a mounting opening at the front thereof for allowing the connecting portion of the handle to slide backward into the inner space of the clamping arm;

[0007] A limit baffle is connected to the side of the clamping arm away from the mounting opening thereof, the limit baffle is L-shaped as a whole, and includes a first limit plate extending horizontally and being able to fit on the top surface of the valve body, and a second limit plate extending downward from the rear side of the first limit plate and being able to fit on the rear side surface of the valve body;

[0008] The limiting convex button is connected to the clamping arm, and a limiting hole which matches with the limiting protrusion and allows the limiting protrusion to be inserted into the limiting hole from bottom to bottom is formed at the bottom of the limiting convex button.

[0009] In order to form a limiting fit with the handle portion of the handle, the upper part of the side wall on the clamping arm opposite to the installation port has a clearance gap for the handle portion of the handle to pass through, and the clamping arm is also provided with vertical limiting plates extending along the side away from the installation port at the left and right edges of the clearance gap, and the two vertical limiting plates are connected to the top surface of the first limiting plate.

[0010] In order to facilitate the operator to hold and relatively open the installation opening of the clamping arm to a certain extent, the two vertical limit plates are provided with first operating protrusions extending in directions away from each other on two opposite side surfaces.

[0011] In order to prevent the operator from slipping when pushing the first operating protrusion backward, an anti-slip pattern is provided on the side surface of the first operating protrusion facing the clamping arm.

[0012] In order to facilitate the operator to lift the locker upward when removing it, the upper part of the outer peripheral wall of the clamping arm must also have a second operating protrusion extending outward in the area adjacent to its installation opening.

[0013] In order to enable the connection part of the handle to slide more smoothly into the clamping arm when installing the locker, two opposite side edges at the installation opening of the clamping arm are provided with guiding slopes for guiding the connection part of the handle to slide into the inner space of the clamping arm.

[0014] In order to facilitate the installation between the clamping arm of the locker and the connecting plate of the handle, the inner wall surface of the clamping arm is in an arc shape that is compatible with the connecting portion of the handle.

[0015] Compared with the prior art, the utility model has the following advantages: the clamping arm of the locker can be held at the connection part of the handle of the hand valve, and according to the structural characteristics of the valve body of the hand valve, the limit baffle is fitted with the top surface and the rear side surface of the valve body to limit the position, so as to offset a part of the thrust of pushing the handle of the hand valve left and right. On this basis, the limit hole at the bottom of the upper limit convex button of the locker is inserted into the limit convex on the top of the valve body, which can also offset the pulling force generated when the hand valve is closed by mistake, and is used to offset another part of the force of closing the hand valve. In this way, the force that will cause the valve to malfunction is offset by the two forces of thrust and tension, thereby ensuring that the instrument hand valve will not be closed by mistake, and realizing the reliable locking of the handle of the instrument hand valve. When the hand valve is to be opened, the locker can also be easily removed. At this time, just lift the locker as a whole slightly upward to force the limit hole to separate from the limit convex button of the valve body, and then pull the locker outward to make the connection part of the handle come out of the installation opening of the clamping arm of the locker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a handle locker for an instrument hand valve according to an embodiment of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of a handle locker for an instrument hand valve according to an embodiment of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the locking device of the embodiment of the utility model when it is installed on the hand valve;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the hand valve. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0022] Figure 1-Figure 3 A preferred embodiment of the handle locker for the instrument hand valve of the utility model is shown. Figure 4A schematic diagram of the three-dimensional structure of an instrument hand valve is shown, and the hand valve includes a valve body 10 and a handle 13 rotatably connected to the top surface 11 of the valve body 10. The valve body 10 is square in shape as a whole, and its top surface 11 and bottom surface are horizontally extended, while the left side surface, right side surface, front side surface and rear side surface 12 are vertically extended. The left and right side surfaces of the valve body 10 are provided with connection ports 14 for connecting to external pipe fittings. The handle 13 of the hand valve includes a long handle portion 131 and a connection portion 132 (i.e., the root of the handle 13) for connecting to the valve body 10. The handle portion 131 of the handle 13 extends toward the side of the valve body 10 and extends substantially horizontally. The connection portion 132 of the handle 13 is a vertically extending cylindrical structure, and the top surface 11 of the valve body 10 is also provided with an upwardly protruding limiting protrusion 111 at the position adjacent to the connection portion 132 of the handle 13.

[0023] See also Figure 1 and Figure 2 The locker includes a clamping arm 20, a limit baffle, a limit knob 24 and a vertical baffle.

[0024] The clamping arm 20 is annular in shape as a whole, and has an installation opening 21 at the front portion thereof, which allows the connection portion 132 of the handle 13 to slide backward into the internal space of the clamping arm 20. The opening size of the installation opening 21 is smaller than the diameter of the connection portion 132 of the handle 13. After the locking device is installed in place, the clamping arm 20 is clamped on the outer periphery of the connection portion 132 of the handle 13, wherein the inner wall surface of the clamping arm 20 is arc-shaped, which is adapted to the cylindrical arc surface of the connection portion 132 of the handle 13. In order to make the connection portion 132 of the handle 13 slide into the clamping arm 20 more smoothly when installing the locking device, the two opposite side edges of the installation opening 21 of the clamping arm 20 are provided with guide slopes 210 extending in the front-to-back direction, and the two guide slopes 210 can be used to guide the connection portion 132 of the handle 13 to slide into the guide slopes 210 in the internal space of the clamping arm 20.

[0025] The limit baffle is connected to the side of the clamping arm 20 away from the mounting opening 21 thereof, and is arranged relatively lower relative to the clamping arm 20 as a whole. The limit baffle includes a first limit plate 231 extending horizontally and a second limit plate 232 extending downward from the rear side of the first limit plate 231, so that the limit baffle is L-shaped as a whole. After the locker is installed in place, the first limit plate 231 is correspondingly attached to the top surface 11 of the valve body 10, and the second limit plate 232 is correspondingly attached to the rear side surface 12 of the valve body 10. After the limit baffle of this embodiment is attached to the top surface 11 and the rear side surface 12 of the valve body 10, it can be used to offset a part of the thrust of pushing the hand valve handle 13 left and right. The front edge of the first limit baffle also has a semi-lunar groove 2310 that is recessed backward and adapted to the arc surface of the connecting portion 132 of the handle 13.

[0026] The limit knob 24 extends outward from the outer peripheral wall of the clamping arm 20, and the limit knob 24 is arranged above the limit stopper as a whole. The bottom of the limit knob 24 is provided with a limit hole 240 adapted to the limit protrusion 111 for the limit protrusion 111 to be inserted therein from bottom to bottom. After the locking device moves forward and the connecting portion 132 of the handle 13 slides into the clamping arm 20, the locking device is moved downward so that the limit protrusion 111 on the top of the valve body 10 can be inserted into the limit hole 240 of the limit knob 24. The plug-in fit between the limit protrusion 111 of the valve body 10 and the limit hole 240 of the locking device can offset the pulling force generated when the hand valve is closed by mistake.

[0027] The upper part of the side wall on the side opposite to the mounting opening 21 of the clamping arm 20 has a clearance notch 22 for the grip portion 131 of the handle 13 to pass through, and the clamping arm 20 is also provided with vertical limit plates 25 extending along a side away from the mounting opening 21 at the left and right edges of the clearance notch 22, and the two vertical limit plates 25 are connected to the top surface 11 of the first limit plate 231. The two vertical limit plates 25 have first operating protrusions 26 extending in directions away from each other on the two opposite sides. By moving the two first operating protrusions 26 backward, the mounting opening 21 of the clamping arm 20 can be relatively opened, so as to facilitate the connection portion 132 of the handle 13 to slide into the internal space of the clamping arm 20. In order to achieve the purpose of anti-slip, the two first operating protrusions 26 are provided with anti-slip lines 260 on at least one side (i.e., the front side) facing the clamping arm 20. At the same time, the two first operating protrusions 26 and the vertical limit plate 25 also constitute reinforcing ribs connecting the upper and lower parts of the locker (clamping arm 20 and limit stopper) to prevent the upper and lower parts of the locker from breaking under the action of force.

[0028] The upper part of the outer peripheral wall of the clamping arm 20 must also have a second operating protrusion 27 extending outward in the area adjacent to its mounting opening 21. The second operating protrusion 27 can facilitate the operator to lift the locking device upward when removing it.

[0029] When installing the locker, by pushing the two first operating protrusions 26 backward, the installation opening 21 of the clamping arm 20 can be relatively opened, and the connecting portion 132 of the handle 13 can be conveniently slid into the internal space of the clamping arm 20 and held by the clamping arm 20. Then, by moving the locker downward, the limiting protrusion 111 on the top of the valve body 10 can be inserted into the limiting hole 240 of the limiting convex button 24. After the locker is installed in place, the clamping arm 20 of the locker is held at the connecting portion 132 of the handle 13 of the hand valve, and according to the structural characteristics of the valve body 10 of the hand valve, the limiting baffle is fitted with the top surface 11 and the rear side surface 12 of the valve body 10 to limit the position, so as to offset a part of the thrust of pushing the hand valve handle 13 left and right. On this basis, the limiting hole 240 at the bottom of the upper limit convex button 24 of the locker is inserted into the limiting protrusion 111 on the top of the valve body 10, which can offset the pulling force generated when the hand valve is closed by mistake, and is used to offset another part of the force of closing the hand valve. In this way, the force that will cause the valve to malfunction is offset by the two forces of thrust and pulling, thereby ensuring that the instrument hand valve will not be closed by mistake, and realizing the reliable locking of the handle 13 of the instrument hand valve. When the hand valve is to be opened, the locker can also be easily removed. At this time, just lift the locker as a whole slightly upward to force the limiting hole 240 to disengage from the limiting convex button 24 of the valve body 10, and then pull the locker outward to make the connecting portion 132 of the handle 13 disengage from the mounting port 21 of the clamping arm 20 of the locker.

Claims

1. A handle locker for an instrument hand valve, which can be detachably mounted on the instrument hand valve, the instrument hand valve comprising a valve body (10) and a handle (13) rotatably connected to the top surface (11) of the valve body (10), the handle (13) comprising a grip portion (131) extending toward the side of the valve body (10) and a connecting portion (132) connected to the valve body (10), the top surface (11) of the valve body (10) also having an upwardly protruding limit protrusion (111) at a position adjacent to the connecting portion (132) of the handle (13), characterized in that The locking device includes: A clamping arm (20) is used to clamp the outer periphery of the connecting portion (132) of the handle (13), and is provided with a mounting opening (21) at the front portion thereof for allowing the connecting portion (132) of the handle (13) to slide backward into the inner space of the clamping arm (20); a limit baffle connected to a side of the clamping arm (20) away from the mounting opening (21), the limit baffle being L-shaped as a whole and comprising a first limit plate (231) extending horizontally and being able to fit on the top surface (11) of the valve body (10) and a second limit plate (232) extending downward from the rear side of the first limit plate (231) and being able to fit on the rear side surface (12) of the valve body (10); The limiting convex button (24) is connected to the clamping arm (20), and a limiting hole (240) is provided at the bottom thereof, which is matched with the limiting protrusion (111) and allows the limiting protrusion (111) to be inserted therein from bottom to bottom.

2. The handle locker for the instrument hand valve according to claim 1, characterized in that: The upper portion of the side wall on the clamping arm (20) opposite to the mounting opening (21) has a clearance notch (22) for the grip portion (131) of the handle (13) to pass through, and the clamping arm (20) is also provided with vertical limit plates (25) extending along a side away from the mounting opening (21) at the left and right edges of the clearance notch (22), and the two vertical limit plates (25) are connected to the top surface (11) of the first limit plate (231).

3. The handle locker for the instrument hand valve according to claim 2, characterized in that: Two side surfaces of the two vertical limit plates (25) which are away from each other are respectively provided with first operating protrusions (26) extending in directions away from each other.

4. The handle locker for the instrument hand valve according to claim 3, characterized in that: An anti-slip pattern (260) is provided on at least one side of the first operating protrusion (26) facing the clamping arm (20).

5. The handle locker for the instrument hand valve according to claim 1, characterized in that: The upper portion of the outer peripheral wall of the clamping arm (20) must also have a second operating protrusion (27) extending outward in an area adjacent to the mounting opening (21).

6. The handle locker for the instrument hand valve according to claim 1, characterized in that: Two opposite side edges of the mounting opening (21) of the clamping arm (20) are provided with guiding inclined surfaces (210) for guiding the connecting portion (132) of the handle (13) to slide into the internal space of the clamping arm (20).

7. The handle locker for the instrument hand valve according to claim 6, characterized in that: The inner wall surface of the clamping arm (20) is in an arc shape that matches the connecting portion (132) of the handle (13).