Anti-misoperation gate valve

Abstract

The utility model provides a kind of anti-misoperation gate valve, including gate valve, the upper end of the gate valve is equipped with T-shaped installation shell, the upper side of the T-shaped installation shell is rotatably matched with rotating sleeve, the outside of the rotating sleeve is fixedly connected with rotating wheel, the lower end of the rotating sleeve is fixedly connected with limit disc, multiple insertion slots are evenly provided in the outside of the limit disc, the inner wall of the rotating sleeve is threadedly matched with the valve core screw rod matched with gate valve. By setting the double locking structure of locking mechanism and limiting mechanism, when the gate valve is in full open or full close state, the locking rod can be inserted into the limit disc slot by rotating knob driving worm gear and cam mechanism, or under the action of spring in installation box, the inclined guide plate is used to push the limit rod to lock, both ways can mechanically lock the rotating sleeve, prevent the gate valve from being misoperated due to staff negligence, emergency misoperation or multiple cooperation failure.

Description

Technical Field

[0001] This utility model relates to the field of gate valve equipment technology, specifically a gate valve designed to prevent misoperation. Background Technology

[0002] In industrial fields such as petrochemicals and water supply and drainage, gate valves, with their excellent sealing performance and large-diameter flow capacity, have become the core components for controlling the flow of media in pipelines. Through the lifting and lowering action of the valve core, gate valves can accurately regulate the flow of media or completely cut off the passage, playing an irreplaceable role in ensuring production processes and maintaining equipment safety.

[0003] However, in actual use, existing gate valves are often misoperated due to operator negligence, misoperation in emergency situations, or poor communication when multiple people are working together, which can lead to media leakage, equipment damage, or even safety accidents. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a gate valve that prevents misoperation and solves the problems mentioned in the background. This utility model has a novel structure. By setting a double locking structure with a locking mechanism and a limiting mechanism, when the gate valve is in the fully open or fully closed state, the locking rod can be locked into the limiting plate slot by rotating the knob to drive the worm gear and cam mechanism, or the limiting rod can be locked by the inclined guide plate under the action of the spring in the mounting box. Both methods can mechanically lock the rotating sleeve and prevent the gate valve from being misoperated due to human negligence, emergency accidental contact, or failure of multiple people to cooperate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gate valve designed to prevent misoperation, comprising a gate valve, a T-shaped mounting shell mounted on the upper end of the gate valve, a rotating sleeve rotatably fitted on the upper side of the T-shaped mounting shell, a rotating wheel fixedly connected to the outer side of the rotating sleeve, a limiting disc fixedly connected to the lower end of the rotating sleeve, multiple slots evenly provided on the outer side of the limiting disc, a valve core screw threadedly fitted to the inner wall of the rotating sleeve and cooperating with the gate valve, a rectangular groove provided on one side of the inner wall of the T-shaped mounting shell, a locking mechanism provided inside the rectangular groove, and a mounting groove provided on the other side of the inner wall of the T-shaped mounting shell, a limiting mechanism provided inside the mounting groove.

[0006] Furthermore, the locking mechanism includes a rotating shaft rotatably fitted on the inner wall of a rectangular groove, a worm gear fixedly connected to the lower end of the rotating shaft, a worm gear meshing with the worm gear rotatably fitted on one side of the inner wall of the rectangular groove, a cam fixedly connected to the rotating shaft, a fixing plate slidably fitted on the inner wall of the rectangular groove, a locking rod slidably fitted on one side of the inner wall of the rectangular groove, a spring sleeved on the locking rod, and a knob fixedly connected to one end of the worm gear extending to the outside of the T-shaped mounting shell.

[0007] Furthermore, the cam engages with one side of the fixed plate, one end of the locking rod is fixedly connected to one side of the fixed plate, both ends of the spring abut against the inner wall of the rectangular groove and one side of the fixed plate respectively, and one end of the locking rod engages with the slot.

[0008] Furthermore, the limiting mechanism includes a mounting box fixedly connected to the lower side of the inner wall of the mounting groove. A pressure rod is slidably and elastically fitted on one side of the inner wall of the mounting box. A mating groove is provided on one side of the pressure rod. An inclined guide plate is fixedly connected to one side of the inner wall of the mating groove. A limiting rod is slidably fitted on one side of the mounting box. A mating inclined groove is provided on the side of the limiting rod near the inclined guide plate.

[0009] Furthermore, the pressure rod is slidably fitted on one side of the T-shaped mounting shell, the inclined guide plate is fitted with the inclined groove, and one end of the limiting plug is engaged with the slot.

[0010] Furthermore, limit grooves are provided on both sides of the inner wall of the rectangular groove, and limit blocks are fixedly connected to both sides of the fixing plate, with the limit blocks slidingly fitted on the inner wall of the limit groove.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model features a dual locking structure consisting of a locking mechanism and a limiting mechanism. When the gate valve is fully open or fully closed, the locking rod can be engaged in the limiting plate slot by rotating the knob to drive the worm gear and cam mechanism. Alternatively, the limiting rod can be locked by the inclined guide plate under the action of the spring in the mounting box. Both methods can mechanically lock the rotating sleeve to prevent the gate valve from being accidentally activated due to human negligence, emergency accidental contact, or errors in the cooperation of multiple people.

[0013] 2. This utility model ensures the stable operation of each component by setting a limiting block and a limiting groove in the locking mechanism and adopting a precise matching structure of an inclined guide plate and a matching inclined groove in the limiting mechanism. The limiting block and the limiting groove restrict the sliding direction of the fixed plate to avoid deviation, and the inclined guide plate and the matching inclined groove ensure the smooth insertion and withdrawal of the limiting rod, reducing component wear. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a gate valve for preventing misoperation according to this utility model;

[0015] Figure 2 This is a schematic diagram of the valve core screw structure of a gate valve designed to prevent misoperation according to this utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the T-shaped mounting shell of a gate valve designed to prevent misoperation according to this utility model.

[0017] Figure 4 This utility model relates to a gate valve designed to prevent misoperation. Figure 3 Enlarged structural diagram at point A in the middle;

[0018] Figure 5 This is a top sectional view of the T-shaped mounting housing of a gate valve designed to prevent misoperation according to this utility model.

[0019] Figure 6 This is a schematic diagram of the limiting mechanism structure of a gate valve designed to prevent misoperation according to this utility model;

[0020] Figure 7 This is a schematic diagram of the separation structure of the limiting mechanism of a gate valve designed to prevent misoperation.

[0021] In the diagram: 1. Gate valve; 2. T-shaped mounting housing; 3. Rotating sleeve; 4. Rotating wheel; 5. Limiting disc; 6. Slot; 7. Valve core screw; 8. Rectangular groove; 9. Locking mechanism; 91. Rotating shaft; 92. Worm gear; 93. Worm; 94. Cam; 95. Fixing plate; 96. Locking rod; 97. Spring; 98. Knob; 10. Mounting groove; 11. Limiting mechanism; 111. Mounting box; 112. Pressure rod; 113. Mating groove; 114. Inclined guide plate; 115. Limiting rod; 116. Mating inclined groove; 12. Limiting groove; 13. Limiting block. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please refer to Figures 1 to 7 This utility model provides a technical solution: a gate valve to prevent misoperation, including a gate valve 1, a T-shaped mounting shell 2 installed at the upper end of the gate valve 1, a rotating sleeve 3 rotatably fitted on the upper side of the T-shaped mounting shell 2, a rotating wheel 4 fixedly connected to the outer side of the rotating sleeve 3, a limiting plate 5 fixedly connected to the lower end of the rotating sleeve 3, a plurality of slots 6 evenly opened on the outer side of the limiting plate 5, a valve core screw 7 that cooperates with the gate valve 1 is threaded on the inner wall of the rotating sleeve 3, a rectangular groove 8 is opened on one side of the inner wall of the T-shaped mounting shell 2, a locking mechanism 9 is provided inside the rectangular groove 8, and an installation groove 10 is opened on the other side of the inner wall of the T-shaped mounting shell 2, a limiting mechanism 11 is provided inside the installation groove 10. Rotating the rotating wheel 4 causes the rotating sleeve 3 to rotate on the upper side of the T-shaped mounting shell 2. Since the inner wall of the rotating sleeve 3 is threadedly engaged with the valve core screw 7, when the rotating sleeve 3 rotates, the valve core screw 7 moves axially, thereby controlling the valve core action of the gate valve 1 and realizing the opening or closing of the gate valve 1. Through the cooperation of the rotating wheel 4, the rotating sleeve 3 and the valve core screw 7, a convenient transmission method is provided for the opening and closing operation of the gate valve 1, enabling the operator to easily control the state of the gate valve 1.

[0024] In this embodiment, the locking mechanism 9 includes a rotating shaft 91 rotatably fitted on the inner wall of a rectangular groove 8. A worm gear 92 is fixedly connected to the lower end of the rotating shaft 91. A worm 93, meshing with the worm gear 92, is rotatably fitted on one side of the inner wall of the rectangular groove 8. A cam 94 is fixedly connected to the rotating shaft 91. A fixing plate 95 is slidably fitted on the inner wall of the rectangular groove 8. A locking rod 96 is slidably fitted on one side of the inner wall of the rectangular groove 8. A spring 97 is sleeved on the locking rod 96. One end of the worm 93 extends to the outside of the T-shaped mounting shell 2 and is fixedly connected to a knob 98. The cam 94 engages with one side of the fixing plate 95. One end of the locking rod 96 is fixedly connected to one side of the fixing plate 95. Both ends of the spring 97 abut against the inner wall of the rectangular groove 8 and one side of the fixing plate 95, respectively. One end of the locking rod 96 engages with the slot 6. Limiting grooves 12 are provided on both sides of the inner wall of the rectangular groove 8. Limiting blocks 13 are fixedly connected to both sides of the fixing plate 95, and the limiting blocks 13 slide in the inner wall of the limiting grooves 12. Rotating the knob 98 drives the worm gear 93 to rotate, and the worm gear 93 meshes with the worm wheel 92, causing the rotating shaft 91 to rotate. The cam 94 on the rotating shaft 91 rotates accordingly. During the rotation of the cam 94, it pushes the fixing plate 95 to slide on the inner wall of the rectangular groove 8. The fixing plate 95 drives the locking rod 96 to move against the elastic force of the spring 97, so that one end of the locking rod 96 is inserted into the slot 6 on the outside of the limiting plate 5. When the knob 98 is rotated in the opposite direction, the cam 94 no longer applies a pushing force to the fixing plate 95, the spring 97 returns to its original position, and the fixing plate 95 and the locking rod 96 move together. The locking rod 96 retracts, causing it to be pulled out of the slot 6. Simultaneously, the limiting blocks 13 on both sides of the fixing plate 95 slide against the inner wall of the limiting groove 12, ensuring the stability of the sliding of the fixing plate 95. Through the transmission of the worm gear 92 and worm 93 and the cam 94, precise control of the locking rod 96 is achieved. When the locking rod 96 is inserted into the slot 6, it can restrict the rotation of the rotating sleeve 3, thereby preventing the gate valve 1 from being misoperated. The cooperation between the limiting blocks 13 and the limiting groove 12 further improves the stability and reliability of the locking mechanism 9.

[0025] In this embodiment, the limiting mechanism 11 includes a mounting box 111 fixedly connected to the lower side of the inner wall of the mounting groove 10. A pressure rod 112 is slidably and elastically fitted on one side of the inner wall of the mounting box 111. A mating groove 113 is formed on one side of the pressure rod 112. An inclined guide plate 114 is fixedly connected to one side of the inner wall of the mating groove 113. A limiting rod 115 is slidably fitted on one side of the mounting box 111. A mating inclined groove 116 is formed on the side of the limiting rod 115 near the inclined guide plate 114. The pressure rod 112 is slidably fitted on one side of the T-shaped mounting shell 2. The inclined guide plate 114 and the mating inclined groove 116 are mated. One end of the limiting rod 115 is engaged with the slot 6. Pressing the pressure rod 112 causes it to slide against the inner wall of the mounting box 111 and compress the elastic component. The inclined guide plate 114 on the pressure rod 112 interacts with the inclined groove 116 of the limiting rod 115, pulling the limiting rod 115 away from the limiting plate 5. After releasing the pressure rod 112, the elastic component returns to its original position, causing the pressure rod 112 and the limiting rod 115 to be pushed out, connecting the limiting rod 115 to the slot 6. The limiting mechanism 11 provides another way to lock the state of the gate valve 1 through the cooperation of the pressure rod 112 and the limiting rod 115. When it is necessary to limit the gate valve 1, it can be achieved by pressing the pressure rod 112. The operation is simple and convenient, and the reliability of preventing misoperation is increased.

[0026] When using the device, if it is necessary to operate the gate valve 1, first ensure that the locking rod 96 of the locking mechanism 9 and the limiting rod 115 of the limiting mechanism 11 are not inserted into the slot 6 of the limiting disc 5 (i.e., in the unlocked state). The limiting mechanism 11 is used for temporary limiting when the equipment is frequently operated, reducing the impact of limiting on the operation of the rotating wheel 4. When the gate valve 1 is used for a long time and does not need adjustment, it is locked by the locking mechanism 9 to increase safety and prevent accidental activation. When the gate valve 1 is in use, rotating the rotating wheel 4 drives the rotating sleeve 3 to rotate. Through the threaded transmission between the rotating sleeve 3 and the valve core screw 7, the valve core of the gate valve 1 is controlled to move, realizing the opening of the gate valve 1. When the gate valve 1 reaches the desired state (fully open or fully closed), the limit rod 115 is inserted into the slot 6 under the action of the elastic element in the mounting box 111, which prevents misoperation. When the gate valve 1 needs to be operated again, press the pressure rod 112 to retract the limit rod 115 and release the locked state, so that the rotary wheel 4 can be rotated again to control the gate valve 1. When the gate valve 1 is not frequently used, turn the knob 98, and use the worm gear 92 and worm 93 transmission and cam 94 mechanism of the locking mechanism 9 to insert the locking rod 96 into the slot 6, restricting the rotation of the rotating sleeve 3, further preventing the gate valve 1 from being misoperated and increasing the safety of the gate valve 1.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A misoperation-proof gate valve comprising a gate valve (1), characterized in that: The gate valve (1) is equipped with a T-shaped mounting shell (2) at its upper end. A rotating sleeve (3) is rotatably fitted on the upper side of the T-shaped mounting shell (2). A rotating wheel (4) is fixedly connected to the outer side of the rotating sleeve (3). A limiting plate (5) is fixedly connected to the lower end of the rotating sleeve (3). Multiple slots (6) are evenly provided on the outer side of the limiting plate (5). A valve core screw (7) that cooperates with the gate valve (1) is threaded on the inner wall of the rotating sleeve (3). A rectangular groove (8) is provided on one side of the inner wall of the T-shaped mounting shell (2). A locking mechanism (9) is provided inside the rectangular groove (8). An installation groove (10) is provided on the other side of the inner wall of the T-shaped mounting shell (2). The internal part of the locking mechanism (9) is provided with a limiting mechanism (11). The locking mechanism (9) includes a rotating shaft (91) that is rotatably engaged with the inner wall of the rectangular groove (8). The lower end of the rotating shaft (91) is fixedly connected to a worm gear (92). A worm (93) that meshes with the worm gear (92) is rotatably engaged with one side of the inner wall of the rectangular groove (8). A cam (94) is fixedly connected to the rotating shaft (91). A fixing plate (95) is slidably engaged with the inner wall of the rectangular groove (8). A locking rod (96) is slidably engaged with one side of the inner wall of the rectangular groove (8). A spring (97) is sleeved on the locking rod (96). One end of the worm (93) extends to the outside of the T-shaped mounting shell (2) and is fixedly connected to a knob (98).

2. A misoperation-proof gate valve according to claim 1, characterized in that: The cam (94) cooperates with one side of the fixed plate (95), one end of the locking rod (96) is fixedly connected to one side of the fixed plate (95), both ends of the spring (97) abut against the inner wall of the rectangular groove (8) and one side of the fixed plate (95) respectively, and one end of the locking rod (96) is engaged with the slot (6).

3. A misoperation-proof gate valve according to claim 1, characterized in that: The limiting mechanism (11) includes a mounting box (111) fixedly connected to the lower side of the inner wall of the mounting groove (10). A pressure rod (112) is slidably and elastically fitted on one side of the inner wall of the mounting box (111). A mating groove (113) is provided on one side of the pressure rod (112). An inclined guide plate (114) is fixedly connected to one side of the inner wall of the mating groove (113). A limiting rod (115) is slidably fitted on one side of the mounting box (111). A mating inclined groove (116) is provided on the side of the limiting rod (115) near the inclined guide plate (114).

4. A misoperation-proof gate valve according to claim 3, characterized in that: The pressure rod (112) is slidably fitted on one side of the T-shaped mounting shell (2), the inclined guide plate (114) is fitted with the inclined groove (116), and one end of the limiting plug (115) is engaged with the slot (6).

5. A misoperation-proof gate valve according to claim 2, characterized in that: Limiting grooves (12) are provided on both sides of the inner wall of the rectangular groove (8), and limiting blocks (13) are fixedly connected to both sides of the fixing plate (95). The limiting blocks (13) slide in fit on the inner wall of the limiting groove (12).

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