Gate valve with mechanical lock

Abstract

The utility model relates to the technical field of gate valves, and discloses a gate valve with a mechanical lock, which comprises a gate valve component, a locking component is mounted on the gate valve component, the gate valve component comprises a valve body, two ends of the valve body are fixedly connected with flange plates, the upper end of the valve body is fixedly connected with a valve frame, the middle of the valve frame is in threaded connection with a valve rod, and the lower end of the valve rod is fixedly connected with a valve plate. The locking assembly comprises a clamp A, the upper surface of the clamp A is fixedly connected with a clamp B, the upper end of the clamp B is rotationally connected with a bidirectional lead screw, the outer surface of the bidirectional lead screw is in threaded connection with a sliding block, and the upper surface of the sliding block is fixedly connected with a clamping frame. The Diohm valve rod clamping device is simple in structure, the two-way screw rod is rotated to adjust the distance between the two sets of sliding blocks, the hand wheel is clamped through the clamping frame, meanwhile, the arc-shaped grooves in the clamping blocks are used for further clamping the hand wheel, and the situation that the final quality of products is affected due to misoperation of the Diohm valve rod in daily use is prevented.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and in particular to a gate valve with mechanical locking. Background Technology

[0002] A gate valve is a device that controls the flow of water through opening and closing elements. When controlling the gate valve to open or close, the operator can rotate the handwheel to drive the valve stem, which in turn drives the opening and closing elements to move up or down.

[0003] Most existing gate valves do not have corresponding mechanical locking structures. In some industrial production processes or specific technological processes, the opening and closing status of gate valves needs to be strictly controlled. If the gate valve is misoperated and changes its original opening and closing status, it may cause process disruption, affect product quality, or even cause safety accidents. Utility Model Content

[0004] The purpose of this invention is to address the problem that most existing gate valves do not have a corresponding mechanical locking structure. In some industrial production processes or specific technological flows, the opening and closing state of the gate valve needs to be strictly controlled. If the gate valve is misoperated and changes its original opening and closing state, it may cause process disruption, affect product quality, or even cause safety accidents. Therefore, this invention proposes a gate valve with a mechanical locking mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a gate valve with mechanical locking, including a gate valve assembly, a locking component installed on the gate valve assembly, the gate valve assembly including a valve body, flanges fixedly connected to both ends of the valve body, a valve frame fixedly connected to the upper end of the valve body, a valve stem threadedly connected to the middle of the valve frame, the lower end of the valve stem extending through the valve frame into the valve body, a valve plate fixedly connected to the lower end of the valve stem, the valve plate being disposed inside the valve body, the locking component including clamp A, clamp B fixedly connected to the upper surface of clamp A, clamp A and clamp B being installed on the outer surface of the valve body by bolts, a bidirectional lead screw rotatably connected to the upper end of clamp B, threaded grooves with opposite directions being opened on the outer surfaces of both ends of the bidirectional lead screw, a slider threadedly connected to the outer surface of the bidirectional lead screw, and a clamping frame fixedly connected to the upper surface of the slider.

[0006] Preferably, the flange has a mounting groove, and a sealing ring is provided in the mounting groove. The sealing ring is a component made of rubber.

[0007] Used to increase the sealing between the flange and the connecting pipe, preventing leakage at the flange and pipe connection.

[0008] Preferably, a handwheel is fixedly connected to the upper end of the valve stem, and a clamping block is fixedly connected to the upper end of the clamping frame. An arc-shaped groove is provided on the clamping block, and the handwheel matches the arc-shaped groove.

[0009] Used to clamp the handwheel through the arc groove, preventing the handwheel from rotating during clamping.

[0010] Preferably, both clamp A and clamp B have anti-slip pads fixedly connected to their inner rings, and the anti-slip pads are components made of rubber.

[0011] This is to prevent clamps A and B from directly contacting the valve body and scratching it, and also to prevent wear on the valve body and clamps A and B caused by vibrations during pipeline operation, thus reducing the service life of the valve body.

[0012] Preferably, a turntable is fixedly connected to one end of the bidirectional lead screw;

[0013] This is designed to allow operators to easily rotate a two-way lead screw, controlling the distance between two sets of sliders by rotating it forward or backward, thereby achieving the fixing of the handwheel.

[0014] Preferably, one end of the slider is slidably connected to a guide rod, and the guide rod is fixedly installed on the clamp B.

[0015] It is used to guide the slider, so that the slider moves according to the set motion trajectory.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model proposes a gate valve with a mechanical lock. By setting a locking component, clamps A and B are installed on the valve body with bolts. Then, the distance between the two sets of sliders is adjusted by rotating the bidirectional screw. The handwheel is then clamped by the clamping frame. At the same time, the handwheel is further clamped by the arc groove on the clamping block, which prevents the valve stem from being misoperated during daily use and affecting the final quality of the product. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the locking component of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the valve body of this utility model;

[0021] Figure 4 This is a partial overall structural diagram of the gate valve assembly of this utility model;

[0022] Figure 5 This is a partial overall structural diagram of the locking component of this utility model;

[0023] Legend:

[0024] 1. Gate valve assembly; 11. Valve body; 12. Flange; 121. Mounting groove; 122. Sealing ring; 13. Valve bracket; 14. Valve stem; 141. Handwheel; 15. Valve plate; 2. Locking assembly; 21. Clamp A; 22. Clamp B; 23. Anti-slip pad; 24. Two-way screw; 241. Turntable; 25. Slider; 26. Guide rod; 27. Clamping frame; 271. Clamping block; 272. Arc groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Reference Figures 1-5This utility model provides an embodiment of a gate valve with a mechanical lock, including a gate valve assembly 1, a locking component 2 installed on the gate valve assembly 1, a valve body 11, and flanges 12 fixedly connected to both ends of the valve body 11, so that the gate valve can be conveniently installed on a designated pipeline and can work normally to control the opening or closing of the pipeline. A valve frame 13 is fixedly connected to the upper end of the valve body 11, and a valve stem 14 is threadedly connected to the middle of the valve frame 13. Rotating the valve stem 14 drives the valve plate 15 to rotate, controlling the rotation angle of the valve plate 15, thereby opening or closing the valve body 11. The lower end of the valve stem 14 extends through the valve frame 13 into the valve body 11, and a valve plate 15 is fixedly connected to the lower end of the valve stem 14. The valve plate 15 is disposed inside the valve body 11 to perform sealing or opening operations on the valve body 11.

[0028] Locking assembly 2 includes clamp A21, with clamp B22 fixedly connected to the upper surface of clamp A21. Clamp A21 and clamp B22 are bolted to the outer surface of valve body 11. A bidirectional lead screw 24 is rotatably connected to the upper end of clamp B22. Rotating the bidirectional lead screw 24 adjusts the distance between the two sets of sliders 25. The outer surfaces of both ends of the bidirectional lead screw 24 have threaded grooves in opposite directions. Slider 25 is threadedly connected to the outer surface of the bidirectional lead screw 24. When slider 25 moves, it drives clamping frame 27 to move. Clamping frame 27 is fixedly connected to the upper surface of slider 25 to clamp and lock valve stem 14, preventing operators from misoperating it during daily work and affecting the final quality of the product.

[0029] A mounting groove 121 is provided on the flange 12, and a sealing ring 122 is provided in the mounting groove 121. The sealing ring 122 is a rubber component, which increases the sealing performance of the connection between the flange 12 and the connecting pipe and reduces the risk of leakage at the connection in the future. A handwheel 141 is fixedly connected to the upper end of the valve stem 14. Turning the handwheel 141 can more easily turn the valve stem 14. The valve plate 15 is turned by the valve stem 14, thereby realizing the opening or closing operation of the valve body 11. A clamping block 271 is fixedly connected to the upper end of the clamping frame 27. An arc-shaped groove 272 is provided on the clamping block 271. The handwheel 141 matches the arc-shaped groove 272, so that the handwheel 141 fits the arc-shaped groove 272. The arc-shaped groove 272 further limits the operation of the handwheel 141, preventing the operator from accidentally touching the gate valve during daily operation and causing irreparable damage.

[0030] Both clamps A21 and B22 have anti-slip pads 23 fixedly connected to their inner rings. The anti-slip pads 23 are made of rubber and increase the friction between clamps A21 and B22 and the valve body 11. At the same time, the pipeline will vibrate during transportation. The anti-slip pads 23 can prevent clamps A21 and B22 from directly contacting the valve body 11 and avoid friction between clamps A21 and B22 when the pipeline drives the valve body 11 to vibrate, thereby preventing damage to the valve body 11. One end of the bidirectional screw 24 is fixedly connected to a turntable 241, which allows the operator to rotate the bidirectional screw 24 to adjust the distance between the two sets of sliders 25. One end of the slider 25 is slidably connected to a guide rod 26, which is fixedly installed on clamp B22 and guides the slider 25 to move along the set motion trajectory.

[0031] Working principle: First, the valve body 11 is installed on the designated pipeline. Clamps A21 and B22 are then installed on the valve body 11 using bolts. Next, the double-acting screw 24 is rotated via the turntable 241, thereby adjusting the distance between the two sets of sliders 25. Under the operation of the guide rod 26, the two sets of sliders 25 can only move in a straight line. The movement of the two sets of sliders 25 also drives the clamping frame 27 to move. Finally, the two sets of clamping frames 27 clamp the handwheel 141. Clamping blocks 271 are installed on the clamping frames 27, and arc-shaped grooves 272 are formed on the clamping blocks 271. When the arc-shaped grooves 272 and the handwheel 141 are fully engaged, the arc-shaped grooves 272 further lock the handwheel 141, preventing irreversible damage to production caused by operator error during daily operation.

[0032] When the valve stem 14 needs to be rotated, the double-acting screw 24 is rotated in the opposite direction, causing the two sets of sliders 25 to move the clamping frame 27 away from the handwheel 141, thus canceling the locking operation of the handwheel 141. Then, the handwheel 141 is rotated as required, and the valve stem 14 is rotated through the handwheel 141, ultimately achieving the adjustment operation of the valve plate 15 through the valve stem 14.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gate valve with a mechanical lock, comprising a gate valve assembly (1) and a locking component (2) mounted on the gate valve assembly (1), characterized in that: The gate valve assembly (1) includes a valve body (11), with flanges (12) fixedly connected to both ends of the valve body (11). A valve frame (13) is fixedly connected to the upper end of the valve body (11), and a valve stem (14) is threadedly connected to the middle of the valve frame (13). The lower end of the valve stem (14) extends through the valve frame (13) into the valve body (11), and a valve plate (15) is fixedly connected to the lower end of the valve stem (14). The valve plate (15) is disposed inside the valve body (11). The locking assembly (2) includes... Clamp A (21) is fixedly connected to clamp B (22) on the upper surface of clamp A (21). Clamp A (21) and clamp B (22) are installed on the outer surface of valve body (11) by bolts. A double-acting screw (24) is rotatably connected to the upper end of clamp B (22). The outer surfaces of both ends of the double-acting screw (24) are provided with threaded grooves in opposite directions. A slider (25) is threadedly connected to the outer surface of the double-acting screw (24). A clamping frame (27) is fixedly connected to the upper surface of the slider (25).

2. A gate valve with mechanical locking according to claim 1, characterized in that: The flange (12) is provided with an installation groove (121), and a sealing ring (122) is provided in the installation groove (121). The sealing ring (122) is a component made of rubber.

3. A gate valve with mechanical locking according to claim 1, characterized in that: A handwheel (141) is fixedly connected to the upper end of the valve stem (14), and a clamping block (271) is fixedly connected to the upper end of the clamping frame (27). An arc groove (272) is provided on the clamping block (271), and the handwheel (141) matches the arc groove (272).

4. A gate valve with mechanical locking according to claim 1, characterized in that: Both clamp A (21) and clamp B (22) have anti-slip pads (23) fixedly connected to their inner rings. The anti-slip pads (23) are made of rubber.

5. A gate valve with mechanical locking according to claim 1, characterized in that: One end of the bidirectional lead screw (24) is fixedly connected to a turntable (241).

6. A gate valve with mechanical locking according to claim 1, characterized in that: One end of the slider (25) is slidably connected to a guide rod (26), and the guide rod (26) is fixedly installed on the clamp B (22).

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