Valve with locking function

By setting a stop member and an elastic support member on the valve stem, and locking the valve stem position with the lock, the problem of the valve being easily misoperated is solved, and the safe and reliable operation of the valve is achieved.

CN223294363UActive Publication Date: 2025-09-02LIANFENG STEEL (ZHANGJIAGANG) CO LTD
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Patent Information

Application Number
CN202422633884.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-30
Publication Date
2025-09-02
Estimated Expiration
2034-10-30

AI Technical Summary

Technical Problem

Existing valves are easily opened or closed by mistake, which poses personal safety hazards, especially in high temperature, high pressure, toxic and harmful media pipelines.

Method used

The valve stem structure with a stop member and an elastic support member is designed to prevent axial movement of the valve stem from contacting the stop member and the support, and further lock the valve stem position through the lock to prevent malfunctioning.

Benefits of technology

Effectively prevent the valve from opening or closing by mistake, eliminate erroneous actions, ensure safe operation, and be suitable for valves in high-temperature, high-pressure, toxic and harmful media pipelines.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a valve with a locking function, which relates to the technical field of valves and comprises a valve body and a support connected with the valve body. One end of the valve rod is connected with a valve element in the valve body, and the other end of the valve rod is matched with a lead screw groove formed in a support; the stop component is arranged in an embedding groove formed in the valve rod; and the elastic supporting part is used for applying thrust to the stop part to enable the stop part to move in the radial direction of the valve rod. The stop part is arranged in the valve rod and can be matched with the elastic supporting part to extend out of the caulking groove to abut against the support, so that the valve rod is prevented from moving in the axial direction to switch the state of the valve, and the situation that the valve is opened or closed due to the fact that the valve rod is touched by mistake is prevented; in addition, a lock can be used for locking the stop component, an operator cannot operate the valve without unlocking the valve, the valve has the safety function in the opening state or the closing state, and the possibility of misoperation is eradicated.
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Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve with a locking function. Background Art

[0002] Valves are widely used in manufacturing enterprises, but many personal injury accidents have occurred due to valve misoperation, especially those involving high-temperature, high-pressure, toxic and hazardous media pipelines. For example, misoperation of high-temperature steam valves can cause burns to people; misoperation of gas valves can pose a threat to human life safety.

[0003] To ensure the personal safety of on-site personnel, maintenance operations require that valves on pipelines involving high temperature, high pressure, toxic and hazardous media be cut off, locked and properly signed with operation signs to prevent misoperation by personnel. Wire ropes are generally used on-site to fix and lock them up and down, but there is still room for movement, and misoperation cannot be completely avoided, and hidden dangers still remain. Utility Model Content

[0004] The purpose of the present invention is to provide a valve with a locking function to solve the technical problem in the prior art that valves in the current market are easily opened or closed due to accidental touch.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a valve with a locking function, comprising:

[0006] a valve body and a support connected to the valve body;

[0007] A valve stem having one end connected to the valve core in the valve body, and the other end of the valve stem cooperating with a screw groove provided in the support;

[0008] A stopper component is provided in a groove provided in the valve stem;

[0009] The elastic supporting component is used to apply a thrust to the stop component to move along the radial direction of the valve stem, forcing the stop component to extend out of the embedding groove and conflict with the support, thereby preventing the valve stem from moving along its axial direction to switch the valve state.

[0010] As a preferred technical solution of the present utility model, the valve stem is provided with a handwheel.

[0011] As a preferred technical solution of the present invention, the stopping component includes: a first pressing plate slidably arranged in the embedding groove.

[0012] As a preferred technical solution of the present invention, the elastic support component includes: a first spring, one end of which is arranged in an inner groove opened in the valve stem, and the other end of the first spring is in contact with the first pressure plate.

[0013] As a preferred technical solution of the present invention, a first lock hole is provided on the surface of the first pressing plate, and the first lock hole is used for accommodating a lock.

[0014] As a preferred technical solution of the present invention, the side of the first pressing plate is provided with a beveled edge, and both sides of the first pressing plate are provided with limiting blocks for preventing it from falling out of the embedding groove.

[0015] As a preferred technical solution of the present utility model, the stop member includes:

[0016] The two stoppers are arranged in the embedding groove, and the stoppers include a second pressing plate with an end shaft arranged at one end;

[0017] The other ends of the second pressure plates of the two stoppers are hinged to each other, wherein the end shaft of one of the second pressure plates rotates with the first rotating groove in the embedded groove, and the end shaft of the other second pressure plate slides with the sliding groove in the embedded groove.

[0018] As a preferred technical solution of the present invention, the elastic support component includes: a second spring with one end connected to the slide groove, and the other end of the second spring is connected to the end shaft.

[0019] As a preferred technical solution of the present invention, a positioning plate is provided on the side of the second spring close to the end shaft, the positioning plate is slidably engaged with the slide groove, and the positioning plate is provided with a second groove for inserting the end shaft.

[0020] As a preferred technical solution of the present invention, second lock holes are provided on the outside of the two second pressure plates, and the second lock holes are used to accommodate locks.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The utility model provides a stop component in the valve stem, which can cooperate with the elastic supporting component to extend the stop component out of the embedded groove and abut against the support, thereby preventing the valve stem from moving along its axial direction to switch the valve state, preventing accidental contact with the valve stem to cause the valve to open or close. When the valve stem moves to the required position, the stop component can also be locked with a lock. The operator cannot operate the valve without unlocking the valve, so that the valve has a safety function in both the open and closed states, eliminating the possibility of malfunction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0024] Figure 2 This is a schematic diagram of a half-section structure of a valve stem in the first embodiment of the present utility model;

[0025] Figure 3This is a schematic diagram of a half-section structure of a valve stem in the first embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of a top-sectional structure of a valve stem in the second embodiment of the present utility model;

[0027] Figure 5 This is a schematic diagram of a half-section structure of a valve stem in the second embodiment of the present utility model;

[0028] Figure 6 This is a schematic diagram of a half-section structure of a valve stem in the second embodiment of the present utility model;

[0029] Figure 7 This is a schematic diagram of a half-section structure of the valve stem in the second embodiment of the present utility model.

[0030] In the figure: 1. Valve body; 2. Support; 3. Valve stem; 4. Handwheel; 5. Screw groove; 6. Embedded groove; 7. First pressure plate; 8. Inner groove; 9. First spring; 10. First locking hole; 11. Lock; 12. Limit block; 13. Second pressure plate; 14. End shaft; 15. Slide groove; 16. Second spring; 17. Second locking hole; 18. Positioning plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] See also Figure 1-3 The utility model provides a technical solution: a valve with a locking function, comprising: a valve body 1 and a support 2 connected to the valve body 1; a valve stem 3 connected to the valve core in the valve body 1 at one end, the valve stem 3 being provided with a handwheel 4, the other end of the valve stem 3 being matched with a screw groove 5 provided in the support 2; a stop member being provided in an embedding groove 6 provided in the valve stem 3; an elastic supporting member being used to apply a thrust to the stop member moving in the radial direction of the valve stem 3, forcing the stop member to extend out of the embedding groove 6 and to come into conflict with the support 2, thereby preventing the valve stem 3 from moving in its axial direction to switch the valve state;

[0033] The above technical solution is adopted to prevent the valve from being accidentally opened or closed. When the valve needs to be closed, the operator manually presses the stop component into the embedded groove 6, so that the elastic support component is in a compressed state. At this time, the stop component is not in contact with the upper and lower ends of the support 2, and the lock of the valve stem 3 is released. The operator operates the handwheel 4 to move the valve stem 3 downward along its axial direction, so that the valve stem 3 drives the valve core to block the valve body 1 and close the valve. At this time, the valve stem 3 moves downward, causing the stop component to completely pass through the screw groove 5 in the support 2. Under the elastic force of the elastic support component, the stop component is reset and extends out of the embedded groove 6. The stop component is tightly attached to the lower end of the support 2, restricting the upward movement of the valve stem 3 to prevent the valve from being reopened due to accidental touching of the valve stem 3.

[0034] like Figure 2 and Figure 3 As shown, in this embodiment, the stop member includes: a first pressure plate 7 slidably disposed in the embedded groove 6; the elastic support member includes: a first spring 9, one end of which is disposed in the inner groove 8 opened in the valve stem 3, and the other end of the first spring 9 contacts the first pressure plate 7;

[0035] The above technical solution can be used to self-lock the valve stem 3. When the first pressure plate 7 passes through the screw groove 5, the first spring 9 generates a thrust on the first pressure plate 7, thereby extending the first pressure plate 7 out of the embedding groove 6. When the first pressure plate 7 is in contact with the upper end surface of the support 2, it can prevent the valve stem 3 from being accidentally touched and moved downward, causing the valve to close accidentally; conversely, when the first pressure plate 7 is in contact with the lower end surface of the support 2, it can prevent the valve stem 3 from being accidentally touched and moved upward, causing the valve to open accidentally.

[0036] Further, such as Figure 2 and Figure 3 As shown, in this embodiment, a first locking hole 10 is opened on the surface of the first pressing plate 7, and the first locking hole 10 is used to accommodate a lock 11;

[0037] The above technical solution can further improve the locking effect of the valve stem 3. When the valve stem 3 is moved to the desired position and the first pressure plate 7 is in contact with the support 2, the lock 11 is used to pass through the first lock hole 10 to lock it. After locking, the operation card is hung at the locked position. The operator cannot operate the valve without unlocking it, eliminating the possibility of misoperation.

[0038] like Figure 3 As shown, in this embodiment, the side of the first pressing plate 7 is provided with a beveled edge, and both sides of the first pressing plate 7 are provided with a limit block 12 for preventing it from falling off from the embedding groove 6;

[0039] The above technical solution can be easily operated and used. Since a bevel is provided on the side of the first pressure plate 7, when the first pressure plate 7 moves up and down with the valve stem 3, the bevel will automatically press the first pressure plate 7 into the groove 6 when the first pressure plate 7 encounters the support 2. There is no need for manual pressing, and the operation is easier.

[0040] like Figure 4-Figure 7 As shown, the present invention provides another embodiment of a stop member and an elastic support member: in this embodiment, the stop member includes: two stop members relatively arranged in the embedded groove 6, the stop member includes a second pressure plate 13 with an end shaft 14 provided at one end; the other ends of the second pressure plates 13 of the two stop members are hinged to each other, the end shaft 14 of one second pressure plate 13 is rotatably engaged with the first rotating groove provided in the embedded groove 6, and the end shaft 14 of the other second pressure plate 13 is slidably engaged with the sliding groove 15 provided in the embedded groove 6; the elastic support member includes: a second spring 16 connected to the sliding groove 15 at one end, and the other end of the second spring 16 is connected to the end shaft 14;

[0041] The above technical solution can also lock the movement of the valve stem 3 to prevent the valve from being accidentally opened or closed due to accidental touch. When the valve needs to be closed, the operator manually presses the hinge of the second pressure plate 13, and the angle between the two second pressure plates 13 increases. The end shaft 14 of one of the second pressure plates 13 slides along the slide groove 15, so that the second spring 16 is in a compressed state, thereby pressing the second pressure plate 13 into the embedded groove 6. At this time, the second pressure plate 13 is not in contact with the upper and lower ends of the support 2, and the lock of the valve stem 3 is released. The operator operates the handwheel 4 to move the valve stem 3 downward along its axial direction, so that the valve stem 3 drives the valve core to block the valve body 1 and close the valve. At this time, due to the downward movement of the valve stem 3, the second pressure plate 13 completely passes through the screw groove 5 in the support 2. Under the elastic force of the second spring 16, the second pressure plate 13 is reset and extends out of the embedded groove 6. One side of the second pressure plate 13 is in close contact with the lower end of the support 2, restricting the upward movement of the valve stem 3 and preventing the valve from being reopened due to accidental touch of the valve stem 3.

[0042] Further, such as Figure 7 As shown, in this embodiment, the second spring 16 is provided with a positioning plate 18 on its side close to the end shaft 14. The positioning plate 18 is slidably matched with the slide groove 15. The positioning plate 18 is provided with a second groove for the end shaft 14 to be inserted;

[0043] The above technical solution can reduce the wear between the end shaft 14 and the slide groove 15 and prevent the end shaft 14 from being damaged. In addition, the positioning plate 18 can also play a guiding and limiting role to prevent the end shaft 14 from moving crookedly.

[0044] Further, such as Figure 5 and Figure 6As shown, in this embodiment, the exterior of the two second pressing plates 13 is provided with a second locking hole 17, and the second locking hole 17 is used to accommodate the lock 11;

[0045] The above technical solution can further improve the locking effect of the valve stem 3. When the valve stem 3 is moved to the desired position and the second pressure plate 13 is in contact with the support 2, the lock 11 is used to pass through the second lock hole 17 to lock it. After locking, the operation card is hung at the locked position. The operator cannot operate the valve without unlocking it, eliminating the possibility of misoperation.

[0046] Working principle: When the valve needs to be closed, the operator manually presses the first pressure plate 7 into the embedded groove 6, so that the first spring 9 is in a compressed state. At this time, the first pressure plate 7 is not in contact with the upper and lower ends of the support 2, and the lock of the valve stem 3 is released. The operator operates the handwheel 4 to move the valve stem 3 downward along its axial direction, so that the valve stem 3 drives the valve core to block the valve body 1 and close the valve. At this time, due to the downward movement of the valve stem 3, the first pressure plate 7 completely passes through the screw groove 5 in the support 2. When the first spring 9 is elastic, the valve stem 3 is released. Under the action of force, the first pressure plate 7 is reset and extends out of the embedded groove 6. The first pressure plate 7 is in close contact with the lower end of the support 2, which limits the upward movement of the valve stem 3 to prevent the valve stem 3 from being accidentally touched and causing the valve to reopen. When the valve stem 3 moves to the required position and the first pressure plate 7 is in contact with the support 2, a lock 11 is used to pass through the first lock hole 10 to lock it. After locking, an operation card is hung at the locked position. The operator cannot operate the valve without unlocking it, eliminating the possibility of malfunction. This device is suitable for gate valves or stop valves.

[0047] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. Valves with locking function, including: A valve body (1) and a support (2) connected to the valve body (1); A valve stem (3) having one end connected to the valve core in the valve body (1), and the other end of the valve stem (3) cooperating with a screw groove (5) provided in the support (2); Characterized in that, the valve with locking function also includes: A stopper component is provided in a groove (6) provided in the valve stem (3); An elastic supporting component is used to apply a thrust to the stop component to move in the radial direction of the valve stem (3), forcing the stop component to extend out of the embedding groove (6) and to come into conflict with the support (2), thereby preventing the valve stem (3) from moving in its axial direction to switch the valve state.

2. The valve with locking function according to claim 1, characterized in that: The valve stem (3) is provided with a hand wheel (4).

3. The valve with locking function according to claim 1, characterized in that: The stopping component comprises a first pressing plate (7) slidably arranged in the embedding groove (6).

4. The valve with locking function according to claim 3, characterized in that: The elastic supporting component comprises: a first spring (9), one end of which is arranged in an inner groove (8) opened in the valve stem (3), and the other end of the first spring (9) contacts the first pressure plate (7).

5. The valve with locking function according to claim 4, characterized in that: A first locking hole (10) is provided on the surface of the first pressing plate (7), and the first locking hole (10) is used for accommodating a lock (11).

6. The valve with locking function according to any one of claims 3 to 5, characterized in that: The side of the first pressing plate (7) is provided with a beveled edge, and both sides of the first pressing plate (7) are provided with limiting blocks (12) for preventing the first pressing plate (7) from falling off from the embedding groove (6).

7. The valve with locking function according to claim 1, characterized in that: The stopping component comprises: Two stoppers are arranged in the embedding groove (6) relative to each other, and the stoppers include a second pressing plate (13) with an end shaft (14) arranged at one end; The other ends of the second pressure plates (13) of the two stoppers are hinged to each other, wherein the end shaft (14) of one of the second pressure plates (13) is rotationally engaged with the first rotating groove provided in the embedding groove (6), and the end shaft (14) of the other second pressure plate (13) is slidingly engaged with the sliding groove (15) provided in the embedding groove (6).

8. The valve with locking function according to claim 7, characterized in that: The elastic supporting component comprises: a second spring (16) having one end connected to the slide groove (15), and the other end of the second spring (16) is connected to the end shaft (14).

9. The valve with locking function according to claim 8, characterized in that: The second spring (16) is provided with a positioning plate (18) on a side thereof close to the end shaft (14). The positioning plate (18) is slidably matched with the slide groove (15). The positioning plate (18) is provided with a second groove for inserting the end shaft (14).

10. The valve with locking function according to claim 9, characterized in that: A second locking hole (17) is provided on the outside of the two second pressing plates (13), and the second locking hole (17) is used to accommodate the lock (11).