Valve plate reset mechanism and glasses valve

Abstract

The utility model relates to the technical field of transmission mechanisms, and particularly discloses a valve plate reset mechanism and a glasses valve. The valve plate reset mechanism comprises a turbine speed reducer and a valve plate reset mechanism, wherein the turbine speed reducer is driven by external force to rotate; and one end of the ejector rod is connected with the turbine speed reducer, the end, away from the turbine speed reducer, of the ejector rod makes contact with the glasses valve plate, and the ejector rod moves under the rotation effect of the turbine speed reducer so that the glasses valve plate can be reset. The glasses valve can effectively adapt to high-pressure and large-differential-pressure working environments, the reliability of the glasses valve is improved, and the glasses valve is simple in structure, high in spare part universality and low in maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of transmission mechanism technology, specifically to a valve plate reset mechanism and an eyeglass valve. Background Technology

[0002] According to the "Safety Regulations for Coal Gas in Industrial Enterprises (GBT6222-2005)," spectacle valves, as a relatively effective isolation device for media, are widely used in process pipelines for various toxic and harmful media. Currently, in blast furnace smelting systems, the purification of blast furnace gas mainly adopts a fully dry bag filter process, and blast furnace gas has significant high-temperature and high-pressure characteristics. As a key shut-off device in gas pipelines, spectacle valves require high reliability in all their mechanisms. However, the existing structural design of spectacle valves cannot adequately meet their reliability requirements under high-temperature and high-pressure conditions. Currently, the valve plate reset mechanism of spectacle valves generally adopts hydraulic cylinder push-open reset and passive push rod cam reset, both of which have limitations. The hydraulic cylinder reset mechanism has a complex structure, resulting in high initial investment and maintenance costs, and is also susceptible to environmental temperature fluctuations. The passive push rod cam reset mechanism, on the other hand, suffers from excessive starting friction, making it difficult to adapt to high-pressure and large differential pressure working environments.

[0003] Therefore, there is still room for improvement in the existing valve plate reset mechanism. Utility Model Content

[0004] The main purpose of this utility model is to provide a valve plate reset mechanism and a spectacle valve, which can effectively adapt to high pressure and large differential pressure working environments, improve the reliability of spectacle valves, and has a simple structure, strong spare parts versatility, and low maintenance cost.

[0005] According to one aspect of the present invention, a valve plate reset mechanism is provided, comprising:

[0006] A worm gear reducer, which is driven to rotate by an external force;

[0007] A push rod, one end of which is connected to the turbine reducer, moves under the rotation of the turbine reducer, so that the end away from the turbine reducer contacts the spectacle valve plate to control the spectacle valve plate to reset.

[0008] According to one embodiment of the present invention, the push rod has an extended position and a retracted position. In the extended position, the push rod contacts the spectacle valve plate and pushes the spectacle valve plate axially to separate it from the spectacle valve seat. In the retracted position, the push rod separates from the spectacle valve plate so that the spectacle valve plate returns to the middle position of the spectacle valve seat.

[0009] According to one embodiment of the present invention, the turbine reducer drives the push rod to move axially back and forth between the extended position and the retracted position by rotation.

[0010] According to one embodiment of the present invention, the valve plate reset mechanism further includes a gearbox, which is connected to the worm gear reducer and is used to drive the worm gear reducer to rotate.

[0011] According to one embodiment of the present invention, the valve plate reset mechanism further includes an electric device, which is connected to the gearbox and is used to provide a power source to the gearbox.

[0012] According to one embodiment of the present invention, the valve plate reset mechanism further includes a connecting rod, and the gearbox is connected to the turbine reducer through the connecting rod, for driving the turbine reducer to rotate under the drive of a power source.

[0013] According to one embodiment of the present invention, the electric device is connected to one or more of the gearboxes, all of which are spaced apart, and each gearbox is connected to one of the connecting rods.

[0014] According to one embodiment of the present invention, one or more of the turbine reducers can be connected at intervals at the end of the connecting rod away from the gearbox, and each of the turbine reducers is connected to one of the push rods.

[0015] According to one embodiment of the present invention, the push rod is movably and fixedly connected to the middle of the turbine reducer.

[0016] According to another aspect of this utility model, a spectacle valve is provided, comprising:

[0017] Low-pressure side valve box; and

[0018] The valve plate reset mechanism as described in any of the preceding claims is mounted on the outer surface of the low-pressure side valve box.

[0019] In the technical solution of this utility model, the valve plate reset mechanism, by combining electric drive and mechanical transmission, completely disengages the spectacle valve plate from the valve seat by driving the push rod to move before the spectacle valve plate moves. This avoids the problem of increased friction between the spectacle valve plate and valve seat under the pressure of the pipeline medium, which could lead to the spectacle valve failing to open or damage to the valve plate seal. This valve plate reset mechanism has a simple structure, highly versatile spare parts, and low maintenance costs. It can effectively adapt to high-pressure and large differential pressure working environments, thus improving the reliability of the spectacle valve. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some implementation examples of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a valve plate reset mechanism according to an embodiment of the present invention is shown;

[0022] Figure 2 Another schematic diagram of the valve plate reset mechanism according to an embodiment of the present invention is shown.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Worm gear reducer; 2. Push rod; 3. Gearbox; 4. Electric actuator; 5. Connecting rod. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 are not intended to 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.

[0027] To address the structural deficiency of existing valve plate reset mechanisms in meeting reliability requirements under high temperature and high pressure environments, this invention proposes an improvement. The improvement is as follows: Figure 1-2 As shown, it specifically includes: a turbine reducer 1, which is driven to rotate by an external force; a push rod 2, one end of which is connected to the turbine reducer 1 and moves under the action of the rotation of the turbine reducer 1, so that the end away from the turbine reducer 1 contacts the spectacle valve plate to control the spectacle valve plate to reset.

[0028] In some embodiments, spectacle valve plate reset refers to adjusting the valve plate back to its initial position after the valve opening and closing operation is completed, i.e., returning from the working state to the standby or closed state. The spectacle valve plate is a moving part, and its movement achieves the cutting off or opening of the medium. The spectacle valve seat is fixed inside the pipeline and is used to support and seal the valve plate.

[0029] In some embodiments, the worm gear reducer 1 is used to further reduce the speed driven by external force and increase the output torque, making the transmission smoother. The worm gear reducer 1 has a high reduction ratio and a self-locking function to ensure the precise movement of the push rod 2. The push rod 2 acts directly on the spectacle valve plate to complete the disengagement or resetting action of the spectacle valve plate. Through its axial reciprocating movement design, the push rod 2 outputs a linear force that pushes the spectacle valve plate, completely separating it from the spectacle valve seat, thereby contacting the sealing friction under back pressure conditions. The worm gear reducer 1 ensures that the push rod 2 will not slip during axial movement, and the movement is precise and reliable. The material of the push rod 2 can be selected from alloys with high temperature resistance and high corrosion resistance.

[0030] According to one embodiment of the present invention, the push rod 2 has an extended position and a retracted position. In the extended position, the push rod 2 contacts the spectacle valve plate and pushes the spectacle valve plate axially to separate it from the spectacle valve seat. In the retracted position, the push rod 2 separates from the spectacle valve plate so that the spectacle valve plate returns to the middle position of the spectacle valve seat.

[0031] According to one embodiment of the present invention, the turbine reducer 1 drives the push rod 2 to move axially back and forth between the extended position and the retracted position by rotation.

[0032] In some embodiments, when the push rod 2 is in the extended position, its head contacts the spectacle valve plate and pushes the valve plate forward, completely separating it from the valve seat. This process overcomes the friction caused by high back pressure, ensuring smooth movement of the valve plate. After the spectacle valve plate moves to the fully separated state, the valve completes the cutting off of the medium or other operations. After the operation is completed, the push rod retracts, returning the valve plate to the valve seat, ensuring valve sealing. Under high back pressure conditions, the valve plate and valve seat can completely separate, avoiding wear or jamming of the sealing surface caused by high-pressure friction. The mechanical transmission control of the push rod 2 movement makes the reset action smoother.

[0033] According to one embodiment of the present invention, a gearbox 3 is also included, which is connected to the worm gear reducer 1 and is used to drive the worm gear reducer 1 to rotate.

[0034] According to one embodiment of the present invention, it further includes an electric device 4, which is connected to the gearbox 3 and is used to provide a power source to the gearbox 3.

[0035] According to one embodiment of the present invention, it further includes a connecting rod 5, and the gearbox 3 is connected to the turbine reducer 1 through the connecting rod 5, for driving the turbine reducer 1 to rotate under the drive of the power source via the connecting rod 5.

[0036] In some embodiments, the electric device 4 provides a power source, converting electrical energy into mechanical energy to drive the entire transmission mechanism, which includes a gearbox 3, a connecting rod 5, and a worm gear reducer 1. The gearbox 3 changes the direction and gear ratio of power transmission, increasing the output torque. The worm gear reducer 1 further reduces the rotational speed and increases the output torque, making the transmission smoother. The connecting rod 5 connects the worm gear reducer 1 and the gearbox 3, transmitting torque and realizing motion conversion.

[0037] In some embodiments, the electric device 4 activates to provide a power source to the gearbox 3, which adjusts the speed and direction of the power output, driving the worm gear reducer 1 to rotate via the connecting rod 5. The worm gear reducer 1 further reduces speed and outputs high torque, driving the push rod to move axially.

[0038] In some embodiments, the link is typically a rigid member capable of withstanding high-intensity force transmission. The material of the link 5 can be an alloy that is highly resistant to high temperatures and corrosion.

[0039] In this invention, the structure is simpler, does not rely on hydraulic oil or hydraulic cylinders, and reduces the impact of ambient temperature on system performance. The gearbox 3, in conjunction with the worm gear reducer 1, provides high torque output, easily handling high-pressure conditions. The mechanical components are made of materials capable of withstanding high-temperature and high-pressure conditions, significantly reducing safety risks caused by high-pressure differentials, ensuring safe equipment operation, and making it suitable for harsh industrial environments. The transmission components are highly versatile, facilitating maintenance and replacement.

[0040] According to one embodiment of the present invention, the electric device 4 is connected to one or more gearboxes 3, all gearboxes 3 are spaced apart, and each gearbox 3 is connected to a connecting rod 5.

[0041] According to one embodiment of the present invention, the end of the connecting rod 5 away from the gearbox 3 can be connected to one or more worm gear reducers 1 at intervals, and each worm gear reducer 1 is connected to a push rod 1.

[0042] According to one embodiment of the present invention, the push rod 2 is movably and fixedly connected to the middle of the turbine reducer 1.

[0043] In the technical solution of this utility model, the valve plate reset mechanism, by combining electric drive and mechanical transmission, completely disengages the spectacle valve plate from the valve seat by driving the push rod to move before the spectacle valve plate moves. This avoids the problem of increased friction between the spectacle valve plate and valve seat under the pressure of the pipeline medium, which could lead to the spectacle valve failing to open or damage to the valve plate seal. This valve plate reset mechanism has a simple structure, highly versatile spare parts, and low maintenance costs. It can effectively adapt to high-pressure and large differential pressure working environments, thus improving the reliability of the spectacle valve.

[0044] According to another aspect of the present invention, a spectacle valve is provided, comprising: a low-pressure side valve box; and a valve plate reset mechanism as described in any of the above, the valve plate reset mechanism being mounted on the outer surface of the low-pressure side valve box.

[0045] In the technical solution of this utility model, the structural design of the spectacle valve can well meet its reliability requirements under high temperature and high pressure conditions. It has low maintenance costs, high long-term operational reliability, and overall economic efficiency superior to existing spectacle valves.

[0046] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the framework of the present invention, technical features of the above embodiments or different embodiments can also be combined, and many other variations of different aspects of the present invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A valve plate reset mechanism, characterized in that, include: The turbine reducer (1) is driven to rotate by an external force; The push rod (2) is connected at one end to the turbine reducer (1) and moves under the rotation of the turbine reducer (1) so that the end away from the turbine reducer (1) contacts the eyeglass valve plate to control the eyeglass valve plate to reset.

2. The valve plate reset mechanism according to claim 1, characterized in that, The push rod (2) has an extended position and a retracted position. In the extended position, the push rod (2) contacts the spectacle valve plate and pushes the spectacle valve plate away from the spectacle valve seat along the axial direction. In the retracted position, the push rod (2) separates from the spectacle valve plate so that the spectacle valve plate returns to the middle position of the spectacle valve seat.

3. The valve plate reset mechanism according to claim 2, characterized in that, The turbine reducer (1) drives the push rod (2) to move axially back and forth between the extended position and the retracted position by rotation.

4. The valve plate reset mechanism according to claim 1, characterized in that, It also includes a gearbox (3), which is connected to the turbine reducer (1) and is used to drive the turbine reducer (1) to rotate.

5. The valve plate reset mechanism according to claim 4, characterized in that, It also includes an electric device (4), which is connected to the gearbox (3) and is used to provide a power source to the gearbox (3).

6. The valve plate reset mechanism according to claim 5, characterized in that, It also includes a connecting rod (5), through which the gearbox (3) is connected to the turbine reducer (1) and is used to drive the turbine reducer (1) to rotate via the connecting rod (5) under the drive of the power source.

7. The valve plate reset mechanism according to claim 6, characterized in that, The electric device (4) is connected to one or more of the gearboxes (3), all of which are spaced apart, and each gearbox (3) is connected to a link (5).

8. The valve plate reset mechanism according to claim 7, characterized in that, One or more of the turbine reducers (1) can be connected at intervals at one end of the connecting rod (5) away from the gearbox (3), and each turbine reducer (1) is connected to one of the push rods (2).

9. The valve plate reset mechanism according to claim 5, characterized in that, The top rod (2) is movably and fixedly connected to the middle of the turbine reducer (1).

10. A spectacle valve, characterized in that, include: Low-pressure side valve box; as well as The valve plate reset mechanism as described in any one of claims 1-9 is mounted on the outer surface of the low-pressure side valve box.

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