Butterfly valve device based on pipeline pressure opening and closing

Abstract

The application discloses a butterfly valve device based on pipeline pressure opening and closing and relates to the field of valve devices.The butterfly valve device based on pipeline pressure opening and closing comprises a pipeline, a rotating shaft rotatably connected to the inner wall of the pipeline at both ends and a valve plate sleeved on the rotating shaft, the rotating shaft drives the valve plate to rotate to connect or cut off the pipeline when rotating, the inner wall of the pipeline is provided with oppositely arranged blocking blocks and elastic limiting mechanisms, the blocking blocks are used for blocking the valve plate cutting off the pipeline from rotating in a first direction, the elastic limiting mechanisms are used for blocking the valve plate cutting off the pipeline from rotating in a second direction and stopping blocking the valve plate when the pressure in the pipeline reaches a preset pressure, the first direction and the second direction are opposite, a torsional spring is sleeved on the rotating shaft, and the torsional spring is used for driving the valve plate to rotate to cut off the pipeline when the rotating shaft rotates.The butterfly valve device based on pipeline pressure opening and closing provided by the application can adjust the opening degree of the valve plate according to the pressure change in the pipeline, and the butterfly valve device is not controlled by external power, so that the butterfly valve device cannot be used due to power failure and the like is avoided.

Description

Technical Field

[0001] This application relates to the field of valve devices, and more specifically, to a butterfly valve device that opens and closes based on pipeline pressure. Background Technology

[0002] Butterfly valves are widely used in industrial fields due to their advantages of low operating torque, small installation space, light weight, durability, and high reliability. The relationship between the opening degree of a butterfly valve and the flow rate is basically linear.

[0003] Currently available butterfly valves typically have an actuator installed on the top, allowing the valve to be opened and closed manually or by using the actuator instead of manual operation. The actuator requires electrical assistance to open and close the valve, and it cannot be effectively started in the event of a power failure.

[0004] Therefore, a butterfly valve that is not electrically driven and opens and closes based on the pressure inside the pipeline is needed to meet the application requirements. Summary of the Invention

[0005] The purpose of this application is to provide a butterfly valve device based on pipeline pressure opening and closing, which can adjust the opening degree of the valve plate according to the pressure change in the pipeline, and does not rely on external power for control, thus avoiding the inability to use due to power failure or other reasons.

[0006] This application is implemented as follows:

[0007] This application provides a butterfly valve device based on pipeline pressure opening and closing, which includes a pipeline, a rotating shaft with both ends rotatably connected to the inner wall of the pipeline, and a valve plate sleeved on the rotating shaft. When the rotating shaft rotates, it drives the valve plate to rotate to connect or disconnect the pipeline. The inner wall of the pipeline is provided with opposing blocking blocks and elastic limiting mechanisms. The blocking blocks are used to prevent the valve plate that disconnects the pipeline from rotating in a first direction; the elastic limiting mechanism is used to prevent the valve plate that disconnects the pipeline from rotating in a second direction, and stops blocking the valve plate when the pressure in the pipeline reaches a preset pressure. The first direction and the second direction are opposite. A torsion spring is sleeved on the rotating shaft, and the torsion spring is used to drive the rotating shaft to rotate the valve plate to disconnect the pipeline.

[0008] In some alternative implementations, the flexible limiting mechanism includes a control tank connected to the outer wall of the pipe, a control chamber communicating with the pipe inside the control tank, a movable slider inside the control chamber, a blocking post for blocking the valve plate connected to one end of the slider facing the pipe, and a control spring between the other end and the inner wall of the control chamber; when the pressure inside the pipe reaches a preset pressure, the slider is pushed to move the blocking post, causing the blocking post to stop blocking the valve plate.

[0009] In some alternative implementations, a spring post is connected to the end of the slider away from the pipe, and a control spring is sleeved on the spring post.

[0010] In some alternative implementations, a baffle is also provided inside the control cavity, through which the spring column slides, and the two ends of the control spring press against the slider and the baffle respectively.

[0011] In some alternative implementations, the control tank has at least one vent hole at the end away from the pipeline that connects to the control chamber.

[0012] In some alternative implementations, the inner wall of the pipe is also connected to fixed posts located on both sides of the valve plate; when the valve plate that cuts off the pipe rotates 90 degrees in the second direction, both ends are blocked by the two fixed posts.

[0013] In some alternative implementations, the fixed column and the valve plate are configured to be magnetically attracted to each other when in contact.

[0014] The beneficial effects of this application are as follows: The butterfly valve device based on pipeline pressure opening and closing provided by this application includes a pipeline, a rotating shaft with both ends rotatably connected to the inner wall of the pipeline, and a valve plate sleeved on the rotating shaft. When the rotating shaft rotates, it drives the valve plate to rotate to connect or disconnect the pipeline. The inner wall of the pipeline is provided with opposing blocking blocks and an elastic limiting mechanism. The blocking blocks are used to prevent the valve plate that disconnects the pipeline from rotating in a first direction; the elastic limiting mechanism is used to prevent the valve plate that disconnects the pipeline from rotating in a second direction, and stops blocking the valve plate when the pressure inside the pipeline reaches a preset pressure. The first direction and the second direction are opposite. A torsion spring is sleeved on the rotating shaft, and the torsion spring is used to drive the rotating shaft to rotate the valve plate to disconnect the pipeline. The butterfly valve device based on pipeline pressure opening and closing provided by this application can adjust the opening degree of the valve plate according to the pressure change inside the pipeline, and does not rely on external power for control, avoiding the inability to use due to power failure or other reasons. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A first-view perspective structural schematic diagram of a butterfly valve device based on pipeline pressure opening and closing provided in an embodiment of this application;

[0017] Figure 2 A cross-sectional view of the butterfly valve device based on pipeline pressure opening and closing provided in an embodiment of this application;

[0018] Figure 3 A third-view cross-sectional structural schematic diagram of a butterfly valve device based on pipeline pressure opening and closing provided in an embodiment of this application;

[0019] Figure 4 for Figure 2 A magnified structural diagram of point A in the middle.

[0020] In the diagram: 100, pipe; 110, shaft; 120, valve plate; 130, blocking block; 140, torsion spring; 150, fixed column; 200, elastic limit mechanism; 210, control tank; 220, control chamber; 230, slider; 240, blocking column; 250, control spring; 260, spring column; 270, baffle; 280, vent. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] In this application, 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 being 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 being 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.

[0028] The features and performance of the butterfly valve device based on pipeline pressure opening and closing of this application will be further described in detail below with reference to embodiments.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this application provides a butterfly valve device based on pipeline pressure for opening and closing. It includes a pipeline 100, a horizontally arranged shaft 110 rotatably connected to both ends of the inner wall of the pipeline 100, and a valve plate 120 vertically arranged and fixedly sleeved on the shaft 110. When the shaft 110 rotates, it drives the valve plate 120 to rotate, connecting or disconnecting the pipeline 100. A blocking block 130 and an elastic limiting mechanism 200 are respectively provided at the top and bottom of the inner wall of the pipeline 100, located on the same side of the valve plate 120. The blocking block 130 is used for… A valve plate 120 that blocks the cutting-off of the pipeline 100 rotates clockwise around the axis of the rotating shaft 110; an elastic limiting mechanism 200 is used to block the valve plate 120 that blocks the cutting-off of the pipeline 100 from rotating counterclockwise around the axis of the rotating shaft 110, and stops blocking the valve plate 120 when the pressure inside the pipeline 100 reaches a preset pressure; a torsion spring 140 is sleeved on the rotating shaft 110, and the two ends of the torsion spring 140 are respectively connected to the pipeline 100 and the rotating shaft 110. The torsion spring 140 is used to drive the rotating shaft 110 to rotate, thereby driving the valve plate 120 to rotate to cut off the pipeline 100. The inner wall of the pipeline 100 is also connected to fixed posts 150 located on both sides of the valve plate 120; when the vertically arranged valve plate 120 rotates 90 degrees counterclockwise around the axis of the rotating shaft 110, its two ends are blocked by the two fixed posts 150 respectively; the fixed posts 150 are made of magnets, and the valve plate 120 is an iron plate. When the valve plate 120 rotates to contact the fixed posts 150, they are connected by magnetic attraction.

[0030] The elastic limiting mechanism 200 includes a control tank 210 connected to the bottom wall of the pipe 100. The control tank 210 has a cylindrical control cavity 220 whose top communicates with the pipe 100. A movable slider 230 is provided within the control cavity 220. A blocking post 240 for blocking the valve plate 120 is connected to one end of the slider 230 facing the pipe 100, and a spring post 260 is connected to the other end of the slider 230 away from the pipe 100. A control spring 250 is sleeved on the spring post 260. The control cavity 220 also includes... There is a baffle 270, and a spring column 260 slides through the baffle 270. The two ends of the control spring 250 press against the slider 230 and the baffle 270 respectively. When the pressure in the pipe 100 increases, it pushes the slider 230 to move away from the pipe 100 along the control cavity 220 and drives the blocking column 240 to move. When the pressure in the pipe 100 reaches the preset pressure, the blocking column 240 stops blocking the valve plate 120. A vent 280 communicating with the control cavity 220 is opened at the end of the control tank 210 away from the pipe 100.

[0031] The working principle of the butterfly valve device based on pipeline pressure opening and closing provided in this application embodiment is as follows: fluid is introduced into the pipeline 100 on the side of the valve plate 120 facing the blocking block 130. When the fluid enters the pipeline 100 and applies pressure to the surface of the valve plate 120, the blocking block 130 connected to the top of the pipeline 100 presses against the top side of the valve plate 120 to prevent the valve plate 120 from rotating clockwise. At this time, the pressure of the fluid applied to the slider 230 in the elastic limiting mechanism 200 on the side facing the pipeline 100 is counteracted by the control spring 250. The pushing force on the side of block 230 away from pipe 100 is equal, causing the blocking post 240 connected to the side of block 230 toward pipe 100 to extend into pipe 100. Thus, the blocking post 240 extending into pipe 100 in the elastic limiting mechanism 200 at the bottom of pipe 100 presses against the bottom side of valve plate 120 to prevent valve plate 120 from rotating counterclockwise. The top and bottom sides of valve plate 120 are blocked by blocking block 130 and blocking post 240 respectively, so that valve plate 120 remains vertically arranged to cut off pipe 100.

[0032] As the pressure of the fluid flowing into pipe 100 gradually increases, the pressure exerted by the fluid on the slider 230 in the elastic limiting mechanism 200 towards pipe 100 is greater than the pushing force of the control spring 250 on the slider 230 away from pipe 100. At this time, the pressure exerted by the fluid pushes the slider 230 along the control chamber 220 away from pipe 100 and moves the blocking column 240 to compress the control spring 250. When the pressure of the fluid flowing into pipe 100 reaches a preset value, the pressure exerted by the fluid pushes the slider 230 to move the blocking column 240 until it stops pressing against valve plate 1. The bottom side of the valve plate 120 causes the pressure exerted by the fluid entering the pipe 100 on the top and bottom of the valve plate 120 to become unbalanced. The fluid pushes the valve plate 120 and the rotating shaft 110 to overcome the tension of the torsion spring 140 and rotate counterclockwise around the axis of the rotating shaft 110 to stop cutting off the pipe 100 and realize the normal transportation of fluid. When the pressure of the fluid entering the pipe 100 continues to increase to push the valve plate 120 to rotate counterclockwise around the axis of the rotating shaft 110 to a horizontal position, the two ends of the valve plate 120 contact the two fixed columns 150 respectively and are connected to each other by magnetic attraction, so that the pipe 100 is in the normally open state.

[0033] When the pressure of the fluid flowing into pipe 100 decreases to below the preset pressure, the pressure exerted by the fluid on the slider 230 in the elastic limiting mechanism 200 towards pipe 100 is less than the pushing force of the control spring 250 on the slider 230 away from pipe 100. At this time, the control spring 250 pushes the slider 230 to move along the control cavity 220 towards pipe 100 and drives the blocking column 240 to move and re-enter pipe 100. At the same time, the magnetic force of the fixed column 150 on the valve plate 120 is less than the force exerted by the torsion spring 140 on the rotating shaft 110. The torsion spring 140 pushes the rotating shaft 110 to rotate, causing the valve plate 120 to disengage from the fixed column 150 and rotate to a vertical arrangement to cut off pipe 100.

[0034] The control chamber 220 is equipped with a baffle 270. A spring post 260 slides through the baffle 270. The two ends of the control spring 250 press against the slider 230 and the baffle 270 respectively. The sliding cooperation between the baffle 270 and the spring post 260 ensures that the fluid pushes the slider 230 to move stably along the control chamber 220, causing the blocking post 240 to move into or out of the pipe 100 to block or stop the blocking valve plate 120. A vent 280 connected to the control chamber 220 is opened at the end of the control tank 210 away from the pipe 100. The vent 280 can balance the pressure difference and prevent device failure due to a sudden increase in pressure difference.

[0035] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A butterfly valve device based on pipeline pressure for opening and closing, comprising a pipeline, a rotating shaft with both ends rotatably connected to the inner wall of the pipeline, and a valve plate sleeved on the rotating shaft, wherein rotating the rotating shaft drives the valve plate to rotate to connect or disconnect the pipeline, characterized in that, The inner wall of the pipeline is provided with opposing blocking blocks and an elastic limiting mechanism. The blocking blocks are used to prevent the valve plate that cuts off the pipeline from rotating in a first direction. The elastic limiting mechanism is used to prevent the valve plate that cuts off the pipeline from rotating in a second direction, and stops blocking the valve plate when the pressure inside the pipeline reaches a preset pressure. The first direction and the second direction are opposite. A torsion spring is sleeved on the rotating shaft. The torsion spring is used to drive the rotating shaft to rotate and drive the valve plate to cut off the pipeline. The elastic limiting mechanism includes a control tank connected to the outer wall of the pipeline. The control tank has a control cavity communicating with the pipeline. The control cavity has a movable slider. One end of the slider facing the pipeline is connected to a blocking post for blocking the valve plate. The other end of the slider is connected to the inner wall of the control cavity with a control spring. When the pressure inside the pipeline reaches the preset pressure, it pushes the slider to drive the blocking post to move, so that the blocking post stops blocking the valve plate.

2. The butterfly valve device based on pipeline pressure opening and closing according to claim 1, characterized in that, The end of the slider away from the pipe is connected to a spring post, and the control spring is sleeved on the spring post.

3. The butterfly valve device based on pipeline pressure opening and closing according to claim 2, characterized in that, The control cavity is also equipped with a baffle, the spring column slides through the baffle, and the two ends of the control spring press against the slider and the baffle respectively.

4. The butterfly valve device based on pipeline pressure opening and closing according to claim 1, characterized in that, The control tank has at least one vent hole at the end away from the pipeline that connects to the control chamber.

5. The butterfly valve device based on pipeline pressure opening and closing according to claim 1, characterized in that, The inner wall of the pipe is also connected to fixed columns located on both sides of the valve plate; when the valve plate that cuts off the pipe rotates 90 degrees along the second direction, both ends are blocked by the two fixed columns.

6. The butterfly valve device based on pipeline pressure opening and closing according to claim 5, characterized in that, The fixed column and the valve plate are configured to be magnetically attracted to each other when in contact.

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