Wellhead anti-theft gate valve

Abstract

The utility model relates to the technical field of gate valves, and discloses a wellhead anti-theft gate valve which comprises a valve body, a rotating handle is installed on the top of the valve body, a limiting assembly is arranged on one side of the rotating handle, and a protection box is installed on the outer side of the valve body. The wellhead anti-theft gate valve is provided with a first motor, a first lead screw, a lifting plate, a sliding rod, a movable plate, a moving plate, a positioning rod and a positioning groove, by starting the first motor, the first lead screw can be driven to rotate, meanwhile, the lifting plate is driven to ascend and descend, the lifting plate drives the movable plate to rotate, and the movable plate can be pushed to move by rotating the movable plate; and a positioning rod on one side of the moving plate extends into a positioning groove to fix a rotating handle, the rotating handle cannot rotate, the gate valve cannot be opened by directly rotating the rotating handle, a starting mechanism of a first motor is controlled by a worker, people other than the worker cannot control the first motor, and then the anti-theft effect of the gate valve is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a wellhead anti-theft gate valve. Background Art

[0002] The gate valve is a widely used valve, mainly used to cut off the medium in pipeline engineering. It has the characteristics of simple structure, small size, light weight, low material consumption, small installation size, fast opening and closing, and small driving torque.

[0003] The working principle of the gate valve is: its opening and closing part is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. Therefore, the gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed by the contact between the valve seat and the gate, and the sealing surface is usually welded with metal materials to increase wear resistance.

[0004] However, the gate valve in the prior art may be accidentally touched by the staff during use, causing the handle to rotate and open the valve a little, which in turn causes oil leakage and energy waste. The valve can be opened by directly turning the handle by hand, which is anti-theft. Therefore, we need a wellhead anti-theft gate valve. Utility Model Content

[0005] The purpose of the utility model is to provide a wellhead anti-theft gate valve to solve the problem in the above background technology that the gate valve in the prior art may be accidentally touched by the staff during use, causing the handle to rotate and open the valve a little, which in turn causes oil leakage and energy waste. The valve can be opened by directly turning the handle by hand, which is very anti-theft.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A wellhead anti-theft gate valve comprises a valve body, a rotating handle is mounted on the top of the valve body, and a limit assembly is provided on one side of the rotating handle, a protection box is mounted on the outside of the valve body, and a box door is provided on the front of the protection box, a handle is fixedly connected to one side of the box door, and a locking assembly is installed on the front of the box door;

[0008] The limit assembly includes a first motor, an output end of the first motor is detachably connected to a first screw via a coupling, and an outer surface of the first screw is threadedly connected to a lifting plate, an inner wall of the lifting plate is slidably connected to a sliding rod, one side of the lifting plate is rotatably connected to a movable plate, and a moving plate is installed on one side of the movable plate, one side of the moving plate is fixedly connected to a positioning rod, and a positioning groove is provided on the outer surface of the rotating handle;

[0009] The locking assembly includes a fixed plate, a second motor is installed inside the fixed plate, the output end of the second motor is detachably connected to the second screw rod through a coupling, and the outer surface of the second screw rod is threadedly connected to the limiting rod, the inner wall of the fixed plate is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to a slider, a fixed block is fixedly connected to one side of the protective box, and a limiting groove is provided on one side of the fixed block.

[0010] Preferably, the first motor forms a lifting structure with the lifting plate through the first screw rod, and the external thread of the first screw rod matches the internal thread of the lifting plate, and the threads on both sides of the first screw rod have opposite rotation directions.

[0011] Preferably, the lifting plate forms a movable structure through a movable plate and a moving plate, and the movable plate is arranged between the lifting plate and the moving plate.

[0012] Preferably, the turning handle forms a snap-fit ​​structure with the positioning rod through the positioning groove, and the shape and size of the positioning groove match the shape and size of the positioning rod.

[0013] Preferably, the second motor forms a moving structure through a second screw rod and a limiting rod, and the external thread of the second screw rod matches the internal thread of the limiting rod.

[0014] Preferably, the fixed plate forms a sliding structure with the slider via a sliding groove, and one side of the slider is connected to one side of the limiting rod.

[0015] Preferably, the fixing block forms a snap-fit ​​structure with the limiting rod through the limiting groove, and the shape and size of the limiting groove match the shape and size of the limiting rod, and one end of the limiting rod extends into the inner wall of the limiting groove for connection.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the wellhead anti-theft gate valve,

[0017] First, the utility model is provided with a first motor, a first screw rod, a lifting plate, a sliding rod, a movable plate, a moving plate, a positioning rod and a positioning slot. By starting the first motor, the first screw rod can be driven to rotate and the lifting plate can be driven to lift and lower at the same time, so that the lifting plate drives the movable plate to rotate, and the rotation of the movable plate can push the moving plate to move, so that the positioning rod on one side of the moving plate extends into the positioning slot to fix the turning handle, so that the turning handle cannot rotate, and the gate valve cannot be opened by directly turning the turning handle. The starting mechanism of the first motor is controlled by the staff, and people other than the staff cannot control the first motor, thereby greatly improving the anti-theft effect of the gate valve.

[0018] Second, the utility model is provided with a fixed plate, a second motor, a second screw rod, a limit rod, a slide groove, a slider, a fixed block and a limit groove. By starting the second motor, the second screw rod can be driven to rotate and the limit rod can be driven to move at the same time. In the locked state, the limit rod will extend into the limit groove in the fixed block, and then the box door cannot be opened, so that non-staff cannot open the box door to steal the gate valve inside, thereby further improving the anti-theft effect of the gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the positioning rod and the rotating handle structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the limiting rod and the fixing block of the utility model.

[0023] In the figure: 1. Valve body; 2. Turning handle; 3. Limiting assembly; 301. First motor; 302. First screw rod; 303. Lifting plate; 304. Sliding rod; 305. Movable plate; 306. Moving plate; 307. Positioning rod; 308. Positioning slot; 4. Protective box; 5. Box door; 6. Handle; 7. Locking assembly; 701. Fixed plate; 702. Second motor; 703. Second screw rod; 704. Limiting rod; 705. Sliding slot; 706. Sliding block; 707. Fixed block; 708. Limiting slot. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the wellhead anti-theft gate valve includes a valve body 1, a rotating handle 2 is installed on the top of the valve body 1, and a limit assembly 3 is provided on one side of the rotating handle 2, a protection box 4 is installed on the outside of the valve body 1, and a box door 5 is provided on the front of the protection box 4, a handle 6 is fixedly connected to one side of the box door 5, and a locking assembly 7 is installed on the front of the box door 5;

[0026] The limiting assembly 3 includes a first motor 301, the output end of the first motor 301 is detachably connected to a first screw rod 302 via a coupling, and the outer surface of the first screw rod 302 is threadedly connected to a lifting plate 303, the inner wall of the lifting plate 303 is slidably connected to a sliding rod 304, one side of the lifting plate 303 is rotatably connected to a movable plate 305, and one side of the movable plate 305 is installed with a moving plate 306, one side of the moving plate 306 is fixedly connected to a positioning rod 307, and the outer surface of the rotating handle 2 is provided with a positioning groove 308;

[0027] The locking assembly 7 includes a fixed plate 701, a second motor 702 is installed inside the fixed plate 701, the output end of the second motor 702 is detachably connected to the second screw rod 703 through a coupling, and the outer surface of the second screw rod 703 is threadedly connected to the limiting rod 704, a sliding groove 705 is provided on the inner wall of the fixed plate 701, and a slider 706 is slidably connected to the inner wall of the sliding groove 705, a fixed block 707 is fixedly connected to one side of the protective box 4, and a limiting groove 708 is provided on one side of the fixed block 707.

[0028] Through the above technical solution, by starting the first motor 301, the first screw rod 302 can be driven to rotate and the lifting plate 303 can be driven to rise and fall, so that the lifting plate 303 drives the movable plate 305 to rotate, and the rotation of the movable plate 305 can push the movable plate 306 to move, so that the positioning rod 307 on one side of the movable plate 306 extends into the positioning groove 308 to fix the handle 2, so that the handle 2 cannot rotate, and directly rotating the handle 2 cannot open the gate valve. The starting mechanism of the first motor 301 is controlled by the staff, and people other than the staff cannot control the first motor 301, thereby greatly improving the anti-theft effect of the gate valve.

[0029] Specifically, the first motor 301 forms a lifting structure with the first screw rod 302 and the lifting plate 303 , and the external thread of the first screw rod 302 matches the internal thread of the lifting plate 303 , and the threads on both sides of the first screw rod 302 rotate in opposite directions.

[0030] Through the above technical solution, it is convenient to start the first motor 301 to drive the first screw rod 302 to rotate and drive the lifting plate 303 to lift and lower at the same time. Because the threads on both sides of the first screw rod 302 rotate in opposite directions, and the two lifting plates 303 are symmetrically arranged at both ends of the first screw rod 302, the two lifting plates 303 can be lifted and lowered relative to each other, and under the action of the sliding rod 304, the lifting and lowering of the lifting plates 303 are more stable.

[0031] Specifically, the lifting plate 303 forms a movable structure through the movable plate 305 and the moving plate 306 , and the movable plate 305 is arranged between the lifting plate 303 and the moving plate 306 .

[0032] Through the above technical solution, the lifting plate 303 can drive the two movable plates 305 to rotate relative to each other during the relative lifting process, so that the movable plate 306 can move under the mutual restraint of the two movable plates 305, thereby achieving the effect of moving the movable plate 306.

[0033] Specifically, the handle 2 forms a snap-fit ​​structure with the positioning rod 307 via the positioning groove 308 , and the shape and size of the positioning groove 308 match those of the positioning rod 307 .

[0034] Through the above technical solution, the movable plate 306 can extend the positioning rod 307 into the positioning groove 308 to fix the position of the handle 2 during the movement, so that the handle 2 cannot rotate, thereby achieving the effect of fixing the handle 2, and then making it impossible for non-staff to directly rotate the handle 2 to open the valve, thereby improving the anti-theft effect.

[0035] Specifically, the second motor 702 forms a moving structure through the second screw rod 703 and the limiting rod 704 , and the external thread of the second screw rod 703 matches the internal thread of the limiting rod 704 .

[0036] Through the above technical solution, it is convenient to start the second motor 702 to drive the second screw rod 703 to rotate while driving the limit rod 704 to move, thereby achieving the effect of the limit rod 704 being able to move, and one end of the limit rod 704 can extend out of the fixed plate 701.

[0037] Specifically, the fixed plate 701 forms a sliding structure with the sliding block 706 through the sliding groove 705 , and one side of the sliding block 706 is connected to one side of the limiting rod 704 .

[0038] Through the above technical solution, the limiting rod 704 can slide in the slide groove 705 through the slider 706 to maintain stability during the movement, so that the limiting rod 704 will not rotate with the rotation of the second screw rod 703, thereby achieving the effect of stable movement of the limiting rod 704.

[0039] Specifically, the fixing block 707 forms a snap-fit ​​structure with the limiting rod 704 through the limiting groove 708, and the shape and size of the limiting groove 708 match the shape and size of the limiting rod 704. One end of the limiting rod 704 extends into the inner wall of the limiting groove 708 for connection.

[0040] Through the above technical solution, it is convenient for the limiting rod 704 to extend into the limiting groove 708 and connect with the fixing block 707, so that the fixing plate 701 and the fixing block 707 are fixed, and then the box door 5 cannot be opened, thereby achieving the effect of fixing the box door 5.

[0041] Working principle: When using the wellhead anti-theft gate valve, first, when fixing the rotating handle 2, it is only necessary to start the first motor 301, and the first motor 301 drives the first screw rod 302 to rotate, and the first screw rod 302 drives the lifting plate 303 to lift, so that the two lifting plates 303 are lifted and lowered relative to each other, and then the two lifting plates 303 drive the two movable plates 305 to rotate relative to each other, and then the movable plate 306 is moved under the mutual restraint of the two movable plates 305, so that the movable plate 306 drives the positioning rod 307 to move into the positioning groove 308, so that the positioning rod 307 fixes the position of the rotating handle 2, causing the rotating handle 2 to be unable to rotate to prevent it from not working. The personnel rotates the handle 2. When locking the protective box 4, it is only necessary to start the second motor 702. The second motor 702 drives the second screw rod 703 to rotate, and the second screw rod 703 drives the limiting rod 704 to move forward. During the movement, the limiting rod 704 will slide in the slide groove 705 through the slider 706 to maintain stability. Then the limiting rod 704 can be extended into the limiting groove 708 and connected with the fixed block 707, so that the fixing plate 701 and the fixed block 707 are fixed, and then the box door 5 cannot be opened. This completes all the work. The content not described in detail in this manual belongs to the existing technology known to professional and technical personnel in this field.

[0042] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the appended claims and their equivalents.

Claims

1. A wellhead anti-theft gate valve, comprising a valve body (1), characterized in that: A rotating handle (2) is installed on the top of the valve body (1), and a limit assembly (3) is provided on one side of the rotating handle (2); a protective box (4) is installed on the outside of the valve body (1), and a box door (5) is provided on the front of the protective box (4); a handle (6) is fixedly connected to one side of the box door (5), and a locking assembly (7) is installed on the front of the box door (5); The limiting assembly (3) includes a first motor (301), an output end of the first motor (301) is detachably connected to a first screw rod (302) via a coupling, and an outer surface of the first screw rod (302) is threadedly connected to a lifting plate (303), an inner wall of the lifting plate (303) is slidably connected to a sliding rod (304), one side of the lifting plate (303) is rotatably connected to a movable plate (305), and a moving plate (306) is installed on one side of the movable plate (305), one side of the moving plate (306) is fixedly connected to a positioning rod (307), and a positioning groove (308) is provided on the outer surface of the rotating handle (2); The locking assembly (7) comprises a fixing plate (701), a second motor (702) is installed inside the fixing plate (701), an output end of the second motor (702) is detachably connected to a second screw rod (703) via a coupling, and an outer surface of the second screw rod (703) is threadedly connected to a limiting rod (704), a sliding groove (705) is provided on the inner wall of the fixing plate (701), and a slider (706) is slidably connected to the inner wall of the sliding groove (705), a fixing block (707) is fixedly connected to one side of the protective box (4), and a limiting groove (708) is provided on one side of the fixing block (707).

2. The wellhead anti-theft gate valve according to claim 1, characterized in that: The first motor (301) forms a lifting structure through the first screw rod (302) and the lifting plate (303), and the external thread of the first screw rod (302) matches the internal thread of the lifting plate (303), and the threads on both sides of the first screw rod (302) rotate in opposite directions.

3. The wellhead anti-theft gate valve according to claim 1, characterized in that: The lifting plate (303) forms a movable structure through the movable plate (305) and the moving plate (306), and the movable plate (305) is arranged between the lifting plate (303) and the moving plate (306).

4. The wellhead anti-theft gate valve according to claim 1, characterized in that: The rotating handle (2) forms a snap-fit ​​structure with the positioning rod (307) via the positioning groove (308), and the shape and size of the positioning groove (308) match the shape and size of the positioning rod (307).

5. The wellhead anti-theft gate valve according to claim 1, characterized in that: The second motor (702) forms a moving structure through the second screw rod (703) and the limiting rod (704), and the external thread of the second screw rod (703) matches the internal thread of the limiting rod (704).

6. The wellhead anti-theft gate valve according to claim 1, characterized in that: The fixed plate (701) forms a sliding structure with the sliding block (706) via the sliding groove (705), and one side of the sliding block (706) is connected to one side of the limiting rod (704).

7. The wellhead anti-theft gate valve according to claim 1, characterized in that: The fixing block (707) forms a snap-fit ​​structure with the limiting rod (704) through the limiting groove (708), and the shape and size of the limiting groove (708) match the shape and size of the limiting rod (704). One end of the limiting rod (704) extends into the inner wall of the limiting groove (708) for connection.

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