Bidirectional sealing butterfly valve with optimized bidirectional sealing performance

Abstract

The utility model provides a bidirectional sealing butterfly valve with optimized bidirectional sealing performance, and relates to the technical field of bidirectional sealing butterfly valves, the bidirectional sealing butterfly valve comprises a butterfly valve connecting pipeline, a connecting frame is fixedly mounted on the outer side of the butterfly valve connecting pipeline, a valve rod is rotatably mounted on the inner side of the butterfly valve connecting pipeline and the inner side of the connecting frame, and a valve element is fixedly mounted on the outer side of the valve rod; the worm is rotationally mounted on the inner side of the connecting frame, the water inlet and outlet pipelines at the two ends are connected with the butterfly valve connecting pipeline through the connecting flanges through the butterfly valve two-way sealing assembly, and when the water inlet and outlet pipelines supply water to the butterfly valve connecting pipeline, water flows to the buffer disc regardless of the situation that water enters the butterfly valve connecting pipeline. The buffering disc can move in the direction of the connecting disc after being stressed, the buffering disc can extrude the sealing rubber ring after moving, the diameter of the extruded sealing rubber ring can be enlarged, the sealing rubber ring is attached to the inner wall of the butterfly valve connecting pipeline, and the bidirectional sealing effect is good no matter what side water enters.

Description

Technical Field

[0001] This utility model relates to the field of bidirectional sealing butterfly valve technology, and in particular to a bidirectional sealing butterfly valve with optimized bidirectional sealing performance. Background Technology

[0002] A butterfly valve is a type of valve that uses a reciprocating rotating disc-shaped opening and closing element to open, close, or regulate the flow of a medium. Butterfly valves are not only simple in structure, small in size, lightweight, economical in material consumption, small in installation dimensions, low in driving torque, and easy to operate, but they also possess excellent flow regulation and sealing characteristics. They are one of the fastest-growing valve types in the past decade or so. Butterfly valves are also called flap valves. Lined wafer butterfly valves are a type of butterfly valve used for the on / off control of low-pressure pipeline media. A butterfly valve refers to a valve where the closing element is a disc that rotates around the valve shaft to achieve opening and closing. This type of valve is widely used in various pipelines in industries such as water supply, environmental protection, and metallurgy, mainly as an opening and closing device. It is suitable not only for media such as water and gas, but also for pipelines transporting sewage and slag water.

[0003] In use, existing butterfly valves only seal the valve through the outer sealing ring. However, when the water pressure is high, the butterfly valve may twist, causing it to loosen and leak. Therefore, we propose a two-way sealing butterfly valve with optimized two-way sealing performance. Utility Model Content

[0004] In view of this, this application provides a bidirectional sealing butterfly valve with optimized bidirectional sealing performance, which solves the above technical problems to a certain extent.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bidirectional sealing butterfly valve with optimized bidirectional sealing performance includes a butterfly valve connecting pipe, a connecting frame fixedly installed on the outer side of the butterfly valve connecting pipe, a valve stem rotatably installed on the inner side of the butterfly valve connecting pipe and the connecting frame, a valve core fixedly installed on the outer side of the valve stem, a butterfly valve drive closing assembly provided above the butterfly valve connecting pipe, the connecting frame and the valve stem, and a butterfly valve bidirectional sealing assembly provided above the valve core.

[0007] The butterfly valve drive closure assembly includes a worm gear, a worm wheel, a rotating handle, and a connecting flange. The worm gear is rotatably mounted on the inner side of the connecting frame, and the worm wheel is fixedly mounted on the outer side of the valve stem. The worm gear and the worm wheel mesh with each other. The rotating handle is fixedly mounted on the outer side of one end of the worm gear, and the connecting flange is fixedly mounted on the left and right sides of the butterfly valve connecting pipeline.

[0008] By adopting the above technical solution, when water needs to flow, the handle can be turned to drive the worm gear to rotate. After the worm gear rotates, it can mesh with the worm wheel. After the worm wheel is subjected to force, it can drive the valve stem and valve core to rotate. After the valve core rotates, it can change the angle inside the butterfly valve connecting pipe, allowing water to flow to the other side of the pipe. Moreover, the worm gear and worm wheel have a self-locking effect, and the valve core will not loosen or shift when the water pressure is high.

[0009] As a further improvement to the above solution, the butterfly valve bidirectional sealing assembly includes a connecting plate, a buffer gasket, a buffer disc, and a sealing ring. The connecting plate is fixedly installed on the left and right sides of the valve core. The buffer gasket is slidably disposed on the inner side of the connecting plate, the buffer disc is slidably disposed on the outer side of the buffer gasket, and the sealing ring is fixedly installed on one side of the connecting plate.

[0010] By adopting the above technical solution, the inlet and outlet water pipes at both ends are connected to the butterfly valve connecting pipe through connecting flanges. When the inlet and outlet water pipes supply water to the butterfly valve connecting pipe, the water flow will flow towards the buffer plate regardless of which side is inlet. After being subjected to force, the buffer plate can move towards the connecting plate. After moving, the buffer plate can squeeze the sealing ring. The squeezed sealing ring will expand its diameter and fit against the inner wall of the butterfly valve connecting pipe. The bidirectional sealing effect is good regardless of which side is inlet.

[0011] As a further improvement to the above solution, the sealing ring is made of elastic rubber and fits against the inner wall of the butterfly valve connecting pipe.

[0012] By adopting the above technical solution, since the sealing ring is made of elastic rubber, after the valve core rotates, the buffer pad can return the buffer plate to its initial position, which facilitates the rotation of the valve core, thereby allowing the water flow in the inlet and outlet pipes on both sides to pass through, and reducing the resistance of the valve core during rotation.

[0013] As a further improvement to the above solution, a connecting block is provided on one side of the connecting plate and the buffer plate, and an L-shaped slot is provided on one side of the connecting block.

[0014] As a further improvement to the above solution, the buffer pad is C-shaped and is slidably disposed inside the slot.

[0015] As a further improvement to the above solution, a rotating groove is provided at the connection between the butterfly valve connecting pipe and the connecting frame, and the valve stem is rotatably installed inside the rotating groove.

[0016] As a further improvement to the above solution, a sealing ring is provided at the connection between the valve stem and the rotating groove.

[0017] As a further improvement to the above solution, an inlet and outlet water pipe is provided on one side of the connecting flange, a flange plate is provided on the outside of the inlet and outlet water pipe, and multiple threaded holes are opened on one side of the connecting flange and the flange plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] (1) The present invention provides a bidirectional sealing butterfly valve with optimized bidirectional sealing performance. By setting a butterfly valve drive closing component, when water needs to flow, the handle can be controlled to drive the worm to rotate. After the worm rotates, it can mesh with the worm wheel. After the worm wheel is subjected to force, it can drive the valve stem and valve core to rotate. After the valve core rotates, it can change the angle inside the pipe connected to the butterfly valve, allowing water to flow to the pipe on the other side. The worm and worm wheel have a self-locking effect. When the water pressure is high, the valve core will not loosen or shift.

[0020] (2) The present invention provides a bidirectional sealing butterfly valve with optimized bidirectional sealing performance. By setting a bidirectional sealing component for the butterfly valve, the inlet and outlet water pipes at both ends are connected to the butterfly valve connecting pipe through connecting flanges. When the inlet and outlet water pipes supply water to the butterfly valve connecting pipe, the water flow will flow to the buffer plate regardless of which side is inlet. After being subjected to force, the buffer plate can move towards the connecting plate. After moving, the buffer plate can squeeze the sealing ring. The squeezed sealing ring will expand its diameter and fit against the inner wall of the butterfly valve connecting pipe. The bidirectional sealing effect is good regardless of which side is inlet.

[0021] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a bidirectional sealing butterfly valve with optimized bidirectional sealing performance proposed in this utility model.

[0023] Figure 2 This is a schematic diagram showing a three-dimensional cross-sectional view of a bidirectional sealing butterfly valve with optimized bidirectional sealing performance according to an embodiment of this application;

[0024] Figure 3 A schematic diagram of the exploded portion structure of a bidirectional sealing butterfly valve with optimized bidirectional sealing performance according to an embodiment of this application is shown.

[0025] Figure 4 This is a schematic diagram showing a three-dimensional cross-sectional view of a bidirectional sealing butterfly valve with optimized bidirectional sealing performance according to an embodiment of this application.

[0026] Figure label:

[0027] 1. Butterfly valve drive closure assembly; 2. Butterfly valve bidirectional sealing assembly; 3. Butterfly valve connecting pipe; 4. Connecting bracket; 5. Valve stem; 6. Valve core;

[0028] 11. Worm gear; 12. Worm wheel; 13. Turning handle; 14. Connecting flange;

[0029] 21. Connecting plate; 22. Buffer pad; 23. Buffer plate; 24. Sealing ring. Detailed Implementation

[0030] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings;

[0031] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] refer to Figure 1-4 A bidirectional sealing butterfly valve with optimized bidirectional sealing performance includes a butterfly valve connecting pipe 3, a connecting frame 4 fixedly installed on the outside of the butterfly valve connecting pipe 3, a valve stem 5 rotatably installed on the inside of the butterfly valve connecting pipe 3 and the connecting frame 4, a valve core 6 fixedly installed on the outside of the valve stem 5, a butterfly valve drive closing assembly 1 provided above the butterfly valve connecting pipe 3, the connecting frame 4 and the valve stem 5, and a butterfly valve bidirectional sealing assembly 2 provided above the valve core 6.

[0033] The butterfly valve drive closing assembly 1 includes a worm gear 11, a worm wheel 12, a rotating handle 13, and a connecting flange 14. The worm gear 11 is rotatably mounted on the inner side of the connecting frame 4, and the worm wheel 12 is fixedly mounted on the outer side of the valve stem 5. The worm gear 11 and the worm wheel 12 mesh with each other. The rotating handle 13 is fixedly mounted on the outer side of one end of the worm gear 11. The connecting flange 14 is fixedly mounted on the left and right sides of the butterfly valve connecting pipe 3.

[0034] In this embodiment, the butterfly valve bidirectional sealing assembly 2 includes a connecting plate 21, a buffer gasket 22, a buffer plate 23, and a sealing ring 24. The connecting plate 21 is fixedly installed on the left and right sides of the valve core 6. The buffer gasket 22 is slidably disposed on the inner side of the connecting plate 21, the buffer plate 23 is slidably disposed on the outer side of the buffer gasket 22, and the sealing ring 24 is fixedly installed on one side of the connecting plate 21.

[0035] In this embodiment, the sealing ring 24 is made of elastic rubber and is in contact with the inner wall of the butterfly valve connecting pipe 3.

[0036] In this embodiment, a connecting block is provided on one side of the connecting plate 21 and the buffer plate 23, and an L-shaped groove is provided on one side of the connecting block; since the sealing ring 24 is made of elastic rubber, after the valve core 6 is rotated, the buffer pad 22 can return the buffer plate 23 to the initial position, so that the valve core 6 can rotate, thereby allowing the water flow in the inlet and outlet pipes on both sides to circulate, and making the resistance of the valve core 6 small during rotation.

[0037] In this embodiment, the buffer pad 22 is C-shaped and is slidably disposed inside the slot. The slot facilitates the movement of the buffer disc 23 after being impacted by the water flow, so that the buffer pad 22 can be squeezed and fit against the inner wall of the butterfly valve connecting pipe 3, which can make the device have a better bidirectional sealing effect.

[0038] In this embodiment, a rotating groove is provided at the connection between the butterfly valve connecting pipe 3 and the connecting frame 4. The valve stem 5 is rotatably installed inside the rotating groove. The rotating groove facilitates the rotation of the valve stem 5 inside the butterfly valve connecting pipe 3 and the connecting frame 4, and allows the operator to rotate the worm gear 11 by rotating the handle 13. The worm gear 11 can cooperate with the worm wheel 12 to drive the valve stem 5 and the valve core 6 to rotate.

[0039] In this embodiment, a sealing ring is provided at the connection between the valve stem 5 and the rotating groove; the sealing ring prevents water from flowing into the inner side of the connecting pipe 3 of the butterfly valve through the rotating groove and into the inner side of the connecting frame 4, so that water will not enter the connection between the worm gear 11 and the worm wheel 12, keeping it dry and preventing corrosion and rust.

[0040] In this embodiment, an inlet and outlet water pipe is provided on one side of the connecting flange 14, and a flange is provided on the outside of the inlet and outlet water pipe. Multiple threaded holes are opened on one side of the connecting flange 14 and the flange. The inlet and outlet water pipes at both ends are connected to the butterfly valve connecting pipe 3 through the connecting flange 14. When the inlet and outlet water pipes supply water to the butterfly valve connecting pipe 3, the water flow will flow to the buffer plate 23 regardless of which side has water inlet. The flange and the connecting flange 14 can be connected and locked by fixing bolts.

[0041] The specific operation involves connecting the inlet and outlet water pipes at both ends to the butterfly valve connecting pipe 3 via connecting flange 14. When the inlet and outlet water pipes supply water to the butterfly valve connecting pipe 3, regardless of which side receives water, the water flow will be directed towards the buffer plate 23. Under pressure, the buffer plate 23 can move towards the connecting plate 21. After moving, the buffer plate 23 can compress the sealing ring 24. The compressed sealing ring 24 will expand in diameter and fit against the inner wall of the butterfly valve connecting pipe 3, ensuring bidirectional sealing regardless of which side receives water. The sealing effect is good and there will be no leakage. When water needs to flow, the handle 13 can be turned to drive the worm gear 11 to rotate. After the worm gear 11 rotates, it can mesh with the worm wheel 12. After the worm wheel 12 is subjected to force, it can drive the valve stem 5 and the valve core 6 to rotate. After the valve core 6 rotates, it can change the angle inside the butterfly valve connecting pipe 3, allowing water to flow to the other side of the pipe. Moreover, the worm gear 11 and the worm wheel 12 have a self-locking effect, and the valve core 6 will not loosen or shift when the water pressure is high.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bidirectional sealing butterfly valve with optimized bidirectional sealing performance, characterized in that, include: A butterfly valve is connected to a pipe (3). A connecting frame (4) is fixedly installed on the outside of the butterfly valve connecting pipe (3). A valve stem (5) is rotatably installed on the inside of the butterfly valve connecting pipe (3) and the connecting frame (4). A valve core (6) is fixedly installed on the outside of the valve stem (5). A butterfly valve drive closing assembly (1) is provided above the butterfly valve connecting pipe (3), the connecting frame (4) and the valve stem (5). A butterfly valve bidirectional sealing assembly (2) is provided above the valve core (6). The butterfly valve drive closing assembly (1) includes a worm (11), a worm wheel (12), a rotating handle (13), and a connecting flange (14). The worm (11) is rotatably mounted on the inner side of the connecting frame (4), and the worm wheel (12) is fixedly mounted on the outer side of the valve stem (5). The worm (11) and the worm wheel (12) mesh with each other. The rotating handle (13) is fixedly mounted on the outer side of one end of the worm (11), and the connecting flange (14) is fixedly mounted on the left and right sides of the butterfly valve connecting pipe (3). The butterfly valve bidirectional sealing assembly (2) includes a connecting plate (21), a buffer gasket (22), a buffer disc (23), and a sealing ring (24). The connecting plate (21) is fixedly installed on the left and right sides of the valve core (6). The buffer gasket (22) is slidably disposed on the inner side of the connecting plate (21). The buffer disc (23) is slidably disposed on the outer side of the buffer gasket (22). The sealing ring (24) is fixedly installed on one side of the connecting plate (21).

2. The bidirectional sealing butterfly valve with optimized bidirectional sealing performance according to claim 1, characterized in that, The sealing ring (24) is made of elastic rubber and is in contact with the inner wall of the butterfly valve connecting pipe (3).

3. The bidirectional sealing butterfly valve with optimized bidirectional sealing performance according to claim 1, characterized in that, A connecting block is provided on one side of the connecting plate (21) and the buffer plate (23), and an L-shaped slot is provided on one side of the connecting block.

4. The bidirectional sealing butterfly valve with optimized bidirectional sealing performance according to claim 1, characterized in that, The buffer pad (22) is C-shaped and is slidably disposed on the inside of the slot.

5. The bidirectional sealing butterfly valve with optimized bidirectional sealing performance according to claim 1, characterized in that, A rotating groove is provided at the connection between the butterfly valve connecting pipe (3) and the connecting frame (4), and the valve stem (5) is rotatably installed inside the rotating groove.

6. The bidirectional sealing butterfly valve with optimized bidirectional sealing performance according to claim 1, characterized in that, A sealing ring is provided at the connection between the valve stem (5) and the rotating groove.

7. A bidirectional sealing butterfly valve with optimized bidirectional sealing performance according to claim 1, characterized in that, A water inlet and outlet pipe is provided on one side of the connecting flange (14), and a flange plate is provided on the outside of the water inlet and outlet pipe. Multiple threaded holes are provided on one side of the connecting flange (14) and the flange plate.

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