Gate valve opening and closing device

Abstract

The utility model belongs to the technical field of valves, and discloses a gate valve opening and closing device which comprises a support, a power mechanism, a rotating shaft and a shifting piece. When the gate valve opening and closing device works, the power mechanism drives the rotating shaft to rotate so as to drive the stirring piece to rotate, the stirring piece can abut against a spoke of a hand wheel switch of the manual gate valve to stir the hand wheel switch to rotate, forward and reverse rotation of the hand wheel switch is achieved by controlling forward and reverse rotation of the power mechanism, and therefore opening and closing of the manual gate valve are achieved. In the opening and closing process of the rising stem manual gate valve, the valve rod ascends or descends along with rotation of the hand wheel switch, the avoiding hole is used for allowing the valve rod to pass through, and interference between the valve rod and the gate valve opening and closing device is avoided. According to the gate valve opening and closing device, opening and closing of the manual gate valve are achieved through power output by the power mechanism, the labor intensity of operators is reduced, and compared with the fact that all pipelines adopt electric gate valves, the investment cost of pipeline equipment is greatly reduced through application of the gate valve opening and closing device.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a gate valve opening and closing device. Background Technology

[0002] During the construction of large-diameter slurry shield tunneling machines, it is necessary to frequently replace or extend the slurry pipes to meet the requirements of continuous tunnel extension. When replacing or extending the slurry pipes, manual operation of the gate valves on the pipes is required. Since the gate valves on the slurry pipes of large-diameter slurry shield tunneling machines are typically large and heavy, manual operation results in high labor intensity for operators and poses certain safety risks.

[0003] The related technology discloses an electric mud gate valve, which includes a frame fixedly connected to the valve body, a working plate, a motor with a reducer, etc. The output end of the motor is connected to a meshing bevel gear, which drives a screw fixedly connected to the valve stem to realize the electric opening and closing of the mud gate valve.

[0004] However, the frame, motor, and bevel gear of this electric mud gate valve are all fixed, and the manufacturing cost of a single gate valve is high. It is suitable for applications with a small number of gate valves. For large-diameter mud shield tunneling machines with multiple large gate valves, the initial investment cost of using this electric mud gate valve is high. Utility Model Content

[0005] The purpose of this utility model is to provide a gate valve opening and closing device that reduces the labor intensity of operators while solving the problem of high initial investment costs when using electric gate valves.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A gate valve opening and closing device, wherein the gate valve opening and closing device includes:

[0008] support;

[0009] A power mechanism, which is fixedly mounted on the bracket;

[0010] A rotating shaft is connected to the output end of the power mechanism, and a clearance hole extending along the axial direction of the rotating shaft is provided on the rotating shaft;

[0011] An actuating element, which is eccentrically connected to the rotating shaft.

[0012] Optionally, the gate valve opening and closing device further includes a turntable, which is coaxially connected to the rotating shaft, and the center of the turntable has a through hole communicating with the clearance hole, and a plurality of the toggle members are arranged circumferentially on the turntable.

[0013] Optionally, the turntable is detachably connected to the rotating shaft.

[0014] Optionally, a plurality of the actuating elements are eccentrically connected along the circumferential direction on the rotating shaft, and the plurality of actuating elements form a plurality of actuating element groups, wherein any actuating element group includes at least two actuating elements spaced apart circumferentially along the rotating shaft.

[0015] Optionally, the actuating member includes a connecting portion and a limiting portion, the connecting portion being eccentrically connected to the rotating shaft, and the limiting portion being connected to the end of the connecting portion away from the rotating shaft.

[0016] Optionally, the power mechanism includes a power source and a right-angle transmission assembly, the right-angle transmission assembly being connected to the output end of the power source, and the rotating shaft being connected to the output end of the right-angle transmission assembly.

[0017] Optionally, the bracket further includes a fixing part, which is disposed on opposite sides of the bracket, and the power mechanism is screwed to the fixing part.

[0018] Optionally, the bottom of the bracket is provided with rollers.

[0019] Optionally, the roller is a self-locking swivel wheel.

[0020] Optionally, an anti-slip pad is fixedly provided on the toggle member.

[0021] The beneficial effects of this utility model are:

[0022] This invention provides a gate valve opening and closing device, particularly suitable for rising stem manual gate valves with a handwheel switch. The device includes a bracket, a power mechanism, a rotating shaft, and an actuating element. The power mechanism is fixedly mounted on the bracket, which provides stable support. The rotating shaft is connected to the output end of the power mechanism, and the actuating element is eccentrically connected to the rotating shaft. When the device is in operation, the power mechanism drives the rotating shaft to rotate, which in turn drives the actuating element to rotate. The actuating element abuts against the spokes of the manual gate valve's handwheel switch, thus rotating the handwheel switch. By controlling the forward and reverse rotation of the power mechanism, the handwheel switch can be rotated in both directions, thereby opening and closing the manual gate valve. During the opening and closing process of the rising stem manual gate valve, the valve stem moves up or down with the rotation of the handwheel switch. An clearance hole allows the valve stem to pass through, preventing interference between the valve stem and the gate valve opening and closing device. The gate valve opening and closing device uses power output from a power mechanism to manually open and close the gate valve, reducing the labor intensity of operators. The entire gate valve opening and closing device can be moved by the operator to open and close different manual gate valves. Multiple manual gate valves can be opened and closed using one gate valve opening and closing device. Compared with the use of electric gate valves throughout the pipeline, the use of this gate valve opening and closing device greatly reduces the initial investment cost of pipeline equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the gate valve opening and closing device according to an embodiment of the present utility model;

[0024] Figure 2 This is a front view of the gate valve opening and closing device without a support frame according to an embodiment of this utility model;

[0025] Figure 3 This is a bottom view of the gate valve opening and closing device without a support according to an embodiment of this utility model;

[0026] Figure 4 This is a top view of the bracket described in an embodiment of the present utility model;

[0027] Figure 5 This is a front view of the bracket described in an embodiment of the present utility model;

[0028] Figure 6 This is a left view of the bracket described in this embodiment of the utility model;

[0029] Figure 7 This is a schematic diagram showing the connection relationship between the rotating shaft, turntable, and actuating component according to an embodiment of this utility model;

[0030] Figure 8 This is a bottom view of the turntable and toggle mechanism described in this embodiment of the utility model.

[0031] In the picture:

[0032] 1. Bracket; 11. Fixing part; 2. Power mechanism; 21. Power source; 22. Reducer; 3. Rotating shaft; 31. Clearance hole; 4. Actuating part; 5. Turntable; 51. Through hole. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] like Figures 1-3 As shown, this utility model provides a gate valve opening and closing device, which is particularly suitable for manual gate valves with a handwheel switch. The gate valve opening and closing device includes a bracket 1, a power mechanism 2, a rotating shaft 3, and an actuating element 4. The power mechanism 2 is fixedly mounted on the bracket 1, and the bracket 1 provides stable support for the power mechanism 2. The rotating shaft 3 is connected to the output end of the power mechanism 2, and an avoidance hole 31 extending axially along the rotating shaft 3 is provided on the rotating shaft 3. The actuating element 4 is eccentrically connected to the rotating shaft 3.

[0038] When the gate valve opening and closing device is working, the power mechanism 2 drives the rotating shaft 3 to rotate, which in turn drives the actuating element 4 to rotate. The actuating element 4 can abut against the spokes of the manual gate valve handwheel switch, thereby turning the handwheel switch. By controlling the forward and reverse rotation of the power mechanism 2, the forward and reverse rotation of the handwheel switch is achieved, thus realizing the opening and closing of the manual gate valve. During the opening and closing process of the rising stem manual gate valve, the valve stem moves up or down with the rotation of the handwheel switch. The clearance hole 31 is used to allow the valve stem to pass through, avoiding interference between the valve stem and the gate valve opening and closing device. This gate valve opening and closing device is also applicable to the non-rising stem manual gate valve with a handwheel switch. The gate valve opening and closing device realizes the opening and closing of the manual gate valve through the power output of the power mechanism 2, reducing the labor intensity of the operator. Moreover, the entire gate valve opening and closing device can be moved by the operator to realize the opening and closing operation of different manual gate valves. Multiple manual gate valves can be opened and closed using one gate valve opening and closing device. Compared with the use of electric gate valves throughout the pipeline, the use of this gate valve opening and closing device greatly reduces the initial investment cost of pipeline equipment.

[0039] Specifically, such as Figures 4-6As shown, bracket 1 is a frame structure. Bracket 1 can be made of materials with certain strength and hardness, such as steel pipes, aluminum alloy profiles, or composite materials. Bracket 1 is equipped with a handle for the operator to grasp the gate valve opening and closing device. The various parts of bracket 1 can be fixedly connected by welding or screwing. Bracket 1 only needs to provide stable support for the power mechanism 2; therefore, its shape, material, and connection method are not specifically limited. The power mechanism 2 can be an electric motor, internal combustion engine, hydraulic motor, or pneumatic motor. Its purpose is to provide power to the actuating element 4 to rotate around the rotating shaft 3. The actuating element 4 can be one or more actuating rods eccentrically connected to the rotating shaft 3, or other structures eccentrically connected to the rotating shaft 3 in other ways, as long as it can rotate the handwheel switch. The rotating shaft 3 and the output end of the power mechanism 2 are connected by a key to maintain coaxial rotation between the rotating shaft 3 and the output end of the power mechanism 2. The control switch for the power mechanism 2 is located on bracket 1 and is used to control the opening, closing, and forward / reverse rotation of the power mechanism 2.

[0040] Furthermore, such as Figure 1 , Figure 5 and Figure 6 As shown, the bracket 1 also includes fixing parts 11 on both sides. Each fixing part 11 has two bolt holes spaced apart in the vertical direction. The power mechanism 2 is fixedly connected to the fixing part 11 by bolts passing through the bolt holes. The fixing part 11 limits the power mechanism 2 and can ensure that the bracket 1 provides stable support for the power mechanism 2.

[0041] Preferably, such as Figure 1 , Figure 3 , Figure 7 and Figure 8 As shown, the gate valve opening and closing device includes a turntable 5, which is coaxially connected to a rotating shaft 3. The turntable 5 has a through hole 51 at its center, communicating with a clearance hole 31. Multiple actuating elements 4 are spaced circumferentially along the side of the turntable 5 away from the rotating shaft 3. By setting the turntable 5, multiple actuating elements 4 can be simultaneously eccentrically connected to the rotating shaft 3. When the manual gate valve is opened and closed, the multiple actuating elements 4 spaced circumferentially along the turntable 5 can simultaneously abut against the spokes of the handwheel switch, improving the stability of the contact between the actuating elements 4 and the handwheel switch, thereby improving the stability of the gate valve opening and closing device. During the opening and closing of the rising stem manual gate valve, the valve stem can enter the clearance hole 31 through the through hole 51 located at the center of the turntable 5, preventing interference between the valve stem and the gate valve opening and closing device. It is understood that the spacing between the multiple actuating elements 4 spaced circumferentially along the turntable 5 should be the same as the circumferential spacing between the spokes of the handwheel switch on that circumference.

[0042] Optionally, such as Figure 7As shown, the turntable 5 and the rotating shaft 3 are detachably connected. In this embodiment, the turntable 5 is screwed to the rotating shaft 3. When the gate valve opening and closing device needs to open and close different models of manual gate valves, the turntable 5 can be replaced to adapt to handwheel switches of different sizes.

[0043] Preferably, multiple actuating elements 4 are eccentrically connected to the rotating shaft 3 along its circumference, and these multiple actuating elements 4 form multiple actuating element groups. Each actuating element group includes at least two actuating elements 4 spaced apart circumferentially along the rotating shaft 3. In this embodiment, each actuating element group includes two actuating elements 4, and the circumferential distance between the two actuating elements 4 along the rotating shaft 3 is slightly greater than the width of the handwheel switch spokes. The actuating element groups ensure that when the gate valve opening and closing device opens or closes the manual gate valve, that is, when the actuating elements 4 rotate forward or backward with the rotating shaft 3, the actuating elements 4 can quickly abut against the spokes of the handwheel switch, thereby improving the working efficiency of the gate valve opening and closing device.

[0044] Preferably, such as Figure 7 and Figure 8 As shown, the actuating element 4 includes a limiting part and a connecting part. The connecting part is eccentrically connected to the rotating shaft 3, and the limiting part is connected to the end of the connecting part away from the rotating shaft 3. In this embodiment, the connecting part extends along the axial direction of the rotating shaft 3 to the side away from the rotating shaft 3, and the limiting part is a hook structure. The hook structure can form a tighter engagement with the spokes, enhancing the connection stability between the actuating element 4 and the handwheel switch spokes. Compared to a flat or simple-shaped contact, the hook structure greatly reduces the possibility of the actuating element 4 slipping off the spokes during rotation. At the same time, the hook structure can effectively resist lateral forces and prevent the actuating element 4 from undergoing lateral displacement.

[0045] Furthermore, taking each toggle assembly as an example, which includes two toggle pieces 4, the limiting parts of both toggle pieces 4 are hook structures, and the hook structures of the two toggle pieces 4 are arranged opposite to each other. When the turntable 5 rotates forward following the rotating shaft 3, the hook structure of one of the toggle pieces 4 in each toggle assembly can abut against the spokes of the handwheel switch. When the turntable 5 rotates in the opposite direction following the rotating shaft 3, the hook structure of the other toggle piece 4 in each toggle assembly can abut against the spokes of the handwheel switch from the opposite direction, thereby enhancing the contact stability between the toggle piece 4 and the spokes of the handwheel switch.

[0046] Furthermore, an anti-slip pad is fixedly provided on the side of the actuating element 4 that abuts against the spokes. The anti-slip pad can be a rubber anti-slip pad or a nylon anti-slip pad, and it can be glued or fixed to the actuating element 4 by a fixing clip, without much limitation here. The anti-slip pad further improves the contact stability between the actuating element 4 and the handwheel switch spokes, thereby improving the stability of the gate valve opening and closing device.

[0047] Preferably, such as Figure 2 and Figure 3As shown, the power mechanism 2 includes a power source 21 and a right-angle transmission assembly. The right-angle transmission assembly is connected to the output end of the power source, and the rotating shaft 3 is connected to the output end of the right-angle transmission assembly. The power source 21 provides power, and the right-angle transmission assembly changes the direction of power transmission from the power source 21. Furthermore, a reducer 22 is provided between the power source 21 and the right-angle transmission assembly. The reducer 22 is connected to the output end of the power source 21 and is used to reduce the rotational speed of the power source 21 and increase its torque to meet the opening and closing requirements of the handwheel switch. In this embodiment, the power source 21 is a motor placed horizontally on the support 1. The output end of the motor is connected to a reducer 22, and the output end of the reducer 22 is connected to a right-angle transmission assembly. The right-angle transmission assembly changes the rotational motion of the motor around the horizontal axis to rotational motion around the vertical axis. A clearance hole 31 is provided on the rotating shaft 3, and the right-angle transmission assembly and the reducer 22 are all provided with channels communicating with the clearance hole. A through hole 51 is provided at the center of the turntable 5. The through hole 51, the clearance hole 31, the right-angle transmission assembly, and the channels on the reducer 22 are all connected to allow the valve stem to pass through, thus avoiding interference between the rising or falling valve stem and the power source 21. It is understood that the right-angle transmission assembly is a bevel gear transmission assembly, planetary gear commutator, or worm gear transmission assembly commonly used in the prior art, and is not specifically limited here. The reducer 22 can also be a reducer with the function of changing the power transmission direction.

[0048] Preferably, the bottom of the bracket 1 is equipped with rollers, so that when the gate valve opening and closing device needs to be moved, the operator can simply push the bracket 1, further reducing the operator's workload. Optionally, the rollers are self-locking universal rollers, which not only satisfy the flexibility of moving the gate valve opening and closing device, but also lock the rollers when the gate valve opening and closing device does not need to be moved, preventing the gate valve opening and closing device from moving arbitrarily and causing injury to the operator or other equipment, further improving the operational safety of the gate valve opening and closing device.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gate valve opening and closing device, characterized in that, The gate valve opening and closing device includes: Scaffold (1); A power mechanism (2) is fixedly mounted on the bracket (1); A rotating shaft (3) is connected to the output end of the power mechanism (2), and a clearance hole (31) extending along the axial direction of the rotating shaft (3) is provided on the rotating shaft (3); A toggle element (4) is eccentrically connected to the rotating shaft (3).

2. The gate valve opening and closing device according to claim 1, characterized in that, The gate valve opening and closing device also includes a turntable (5), which is coaxially connected to the rotating shaft (3), and the center of the turntable (5) is provided with a through hole (51) communicating with the clearance hole (31), and a plurality of the toggle members (4) are arranged circumferentially on the turntable (5).

3. The gate valve opening and closing device according to claim 2, characterized in that, The turntable (5) is detachably connected to the rotating shaft (3).

4. The gate valve opening and closing device according to claim 1, characterized in that, Multiple actuating elements (4) are eccentrically connected along the circumferential direction on the rotating shaft (3), and the multiple actuating elements (4) form multiple actuating element groups. Each actuating element group includes at least two actuating elements (4) arranged circumferentially at intervals along the rotating shaft (3).

5. The gate valve opening and closing device according to claim 1, characterized in that, The actuating member (4) includes a connecting part and a limiting part. The connecting part is eccentrically connected to the rotating shaft (3), and the limiting part is connected to the end of the connecting part away from the rotating shaft (3).

6. The gate valve opening and closing device according to any one of claims 1-5, characterized in that, The power mechanism (2) includes a power source (21) and a right-angle transmission assembly. The right-angle transmission assembly is connected to the output end of the power source (21), and the rotating shaft (3) is connected to the output end of the right-angle transmission assembly.

7. The gate valve opening and closing device according to any one of claims 1-5, characterized in that, The bracket (1) further includes a fixing part (11), which is disposed on opposite sides of the bracket (1), and the power mechanism (2) is screwed to the fixing part (11).

8. The gate valve opening and closing device according to any one of claims 1-5, characterized in that, The bottom of the bracket (1) is provided with rollers.

9. The gate valve opening and closing device according to claim 8, characterized in that, The rollers are self-locking casters.

10. The gate valve opening and closing device according to any one of claims 1-5, characterized in that, An anti-slip pad is fixedly installed on the toggle member (4).

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