Combined vacuum butterfly valve disc structure

Abstract

The utility model discloses a combined vacuum butterfly valve valve clack structure relates to vacuum butterfly valve technical field, including valve body and sealing assembly, the inside of valve body is provided with valve clack block, and the sealing assembly for increasing sealing effect sets up in the outside of valve clack block, and sealing assembly includes sealing petal, installation slot, annular air bag ring and sealing strip, the side of sealing petal is equipped with installation slot, and the inside of installation slot is equipped with annular air bag ring through pipeline, the outer surface of annular air bag ring is equipped with sealing strip. This one kind combined vacuum butterfly valve valve clack structure is opened and closed with valve clack block synchronous control to complete the opening and closing action through two sealing petals, and installation slot provides annular air bag ring and sealing strip installation space, and installation slot still provides the guiding space of moving for sealing strip, and annular air bag ring is controlled to swell and extrudes sealing strip after sealing petal closes under the air pump, so that sealing strip is in sealing petal and the inner wall of valve body and fully contacts guaranteeing sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of vacuum butterfly valve technology, specifically a combined vacuum butterfly valve disc structure. Background Technology

[0002] A vacuum butterfly valve is a valve device used for regulating or shutting off the flow of gas media. It is mainly used in ventilation and environmental protection pipeline systems in industries such as chemical, building materials, metallurgy, and power. The overall structural design of the core moving parts of the butterfly valve, which are used to control the opening and closing of the valve body channel, isolate or regulate the medium in the vacuum system, and ensure the sealing performance in the vacuum environment, must be adapted to the low leakage requirements of vacuum conditions, the flexibility of opening and closing actions, and the wear resistance for long-term use. It is the key part that determines the sealing level, operating torque, and service life of the vacuum butterfly valve.

[0003] However, the valve disc of existing vacuum butterfly valves is usually made of a single piece of plate during use, which can easily cause wear and tear on the plate during opening and closing, affecting the subsequent sealing effect. Utility Model Content

[0004] The purpose of this invention is to provide a combined vacuum butterfly valve disc structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined vacuum butterfly valve disc structure, including a valve body and a sealing assembly. The valve body has a valve disc block inside, and the sealing assembly for increasing the sealing effect is located on the outside of the valve disc block. The sealing assembly includes a sealing disc, a mounting groove, an annular airbag ring, and a sealing strip. The sealing disc has a mounting groove on its side, and the annular airbag ring is installed inside the mounting groove through a pipe. The outer surface of the annular airbag ring is fitted with a sealing strip.

[0006] Furthermore, the annular airbag ring and the sealing strip are fixedly connected, and two sets of annular airbag rings and sealing strips are provided.

[0007] Furthermore, assembly flanges are installed on the front and rear sides of the valve body, and the valve body and the assembly flanges are an integrated structure.

[0008] Furthermore, an auxiliary end is provided on the right side of the valve body, and a control end is installed on the left side of the valve body.

[0009] Furthermore, a rubber ring is installed on the inner wall of the valve body, and an auxiliary component for auxiliary air extraction detection is provided in the middle of the lower end of the valve body.

[0010] Furthermore, the auxiliary components include an extraction trough and a sealing block, and the sealing block is provided inside the extraction trough.

[0011] Furthermore, the auxiliary components also include an extraction pipe and an electric push rod. The lower end of the sealing block is equipped with an extraction pipe, and the side of the extraction pipe is equipped with an electric push rod.

[0012] Furthermore, the extraction trough and the sealing block are interference fit, and the sealing block and the extraction pipe are fixedly connected.

[0013] This utility model provides a combined vacuum butterfly valve disc structure, which has the following beneficial effects: 1. This utility model completes the opening and closing action by controlling the synchronous opening and closing of two sealing petals with the valve petal block. The mounting groove provides installation space for the annular airbag ring and the sealing strip. The mounting groove also provides a guide space for the movement of the sealing strip. After the sealing petals are closed, the annular airbag ring expands under the control of the air pump and squeezes the sealing strip, so that the sealing strip is in full contact with the sealing petals and the inner wall of the valve body to ensure the sealing effect.

[0014] 2. This utility model uses an assembly flange for valve body installation. A rubber ring cooperates with a sealing flap on the inner wall of the valve body to complete the seal when closed. An extraction groove is used for temporary installation of the extraction pipe. The ends of the sealing block and the extraction pipe retract into the extraction groove when the valve flap closes. The top side opening of the extraction pipe is used for extraction of gas passing through the valve body. During extraction, the electric push rod extends and pushes the sealing block and the extraction pipe upward, exposing the side opening of the extraction pipe into the valve body. The two sealing blocks play a sealing role in the extraction groove when the extraction pipe moves upward and retracts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a combined vacuum butterfly valve disc structure according to the present invention. Figure 2 This is a schematic diagram of the sealing component structure of a combined vacuum butterfly valve disc structure according to this utility model; Figure 3 This is a schematic diagram of the auxiliary component structure of a combined vacuum butterfly valve disc structure according to this utility model.

[0016] In the diagram: 1. Valve body; 2. Valve disc block; 3. Sealing assembly; 301. Sealing disc; 302. Mounting groove; 303. Annular airbag ring; 304. Sealing strip; 4. Assembly flange; 5. Auxiliary end; 6. Control end; 7. Rubber ring; 8. Auxiliary assembly; 801. Extraction tank; 802. Sealing block; 803. Extraction pipe; 804. Electric push rod. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0018] like Figure 1As shown, a combined vacuum butterfly valve disc structure includes a valve body 1 and a sealing assembly 3. A valve disc block 2 is disposed inside the valve body 1. The sealing assembly 3, used to enhance the sealing effect, is disposed outside the valve disc block 2. The sealing assembly 3 includes a sealing disc 301, a mounting groove 302, an annular airbag ring 303, and a sealing strip 304. The mounting groove 302 is formed on the side of the sealing disc 301. The two sealing discs 301 open and close synchronously with the valve disc block 2 to complete the opening and closing action. The mounting groove 302 provides installation space for the annular airbag ring 303 and the sealing strip 304. The annular airbag ring 303 is installed inside the mounting groove 302 through a pipe. The mounting groove 302 also provides space for the sealing strip 304. The annular airbag ring 303 has a guide space for movement. A sealing strip 304 is installed on the outer surface of the annular airbag ring 303. After the sealing flap 301 is closed, the annular airbag ring 303 is expanded by the air pump and squeezes the sealing strip 304, so that the sealing strip 304 is in full contact with the sealing flap 301 and the inner wall of the valve body 1 to ensure the sealing effect. The annular airbag ring 303 and the sealing strip 304 are fixedly connected, and there are two sets of annular airbag ring 303 and sealing strip 304. Assembly flanges 4 are installed on the front and rear sides of the valve body 1 for the installation of the valve body 1. The valve body 1 and the assembly flanges 4 are integrated structures. An auxiliary end 5 is provided on the right side of the valve body 1, and a control end 6 is installed on the left side of the valve body 1.

[0019] like Figure 3 As shown, a rubber ring 7 is installed on the inner wall of the valve body 1. The rubber ring 7, in conjunction with the sealing flap 301, completes the seal when the valve body 1 is closed. An auxiliary component 8 for auxiliary air extraction detection is provided in the middle of the lower end of the valve body 1. The auxiliary component 8 includes an extraction groove 801 and a sealing block 802. The sealing block 802 is installed inside the extraction groove 801. The extraction groove 801 and the sealing block 802 are interference-fitted. The extraction groove 801 is used for temporary installation of the extraction pipe 803. The auxiliary component 8 also includes the extraction pipe 803 and an electric push rod 804. The lower end of the sealing block 802 is equipped with the extraction pipe 803. 3. When the valve disc block 2 is closed, the ends of the sealing block 802 and the extraction pipe 803 retract into the extraction groove 801. The sealing block 802 and the extraction pipe 803 are fixedly connected. The top side of the extraction pipe 803 has an opening for the extraction of gas passing through the valve body 1. When the two sealing blocks 802 move upward and retract the extraction pipe 803, they play a sealing role in the extraction groove 801. An electric push rod 804 is installed on the side of the extraction pipe 803. During extraction, the electric push rod 804 extends and pushes the sealing block 802 and the extraction pipe 803 upward, so that the side opening of the extraction pipe 803 is exposed in the valve body 1.

[0020] In summary, the valve disc structure of this combined vacuum butterfly valve is first based on... Figures 1-3The structure shown illustrates that the valve body 1 is installed on the pipeline via the assembly flange 4. Driven by a motor, the valve stem moves the valve disc 2 inside the valve body 1, opening and closing. The two sealing discs 301 open and close synchronously with the valve disc 2, controlling the opening and closing action. When closed, the annular air bladder 303 expands under the control of an air pump after the sealing disc 301 closes, compressing the sealing strip 304. This ensures full contact between the sealing strip 304 and the rubber ring 7 on the inner wall of the valve body 1, guaranteeing a seal. When opened, the annular air bladder 303 needs to release air and contract, preventing the sealing strip 304 from collapsing. Wear and tear, increasing service life. When valve disc 2 is open, if it is necessary to extract internal gas, the control electric push rod 804 extends to push the sealing block 802 and extraction pipe 803 upward, so that the side opening of extraction pipe 803 is exposed in valve body 1 for gas extraction. When extracting or closing, the ends of sealing block 802 and extraction pipe 803 retract into extraction groove 801 when valve disc 2 is closed. Before and after extraction, the two sealing blocks 802 play a sealing role in extraction groove 801 when extraction pipe 803 moves upward and retracts, respectively, to prevent gas leakage.

[0021] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A combined vacuum butterfly valve disc structure, comprising a valve body (1) and a sealing assembly (3), characterized in that, The valve body (1) is provided with a valve disc block (2) inside. The sealing assembly (3) for increasing the sealing effect is provided on the outside of the valve disc block (2). The sealing assembly (3) includes a sealing disc (301), a mounting groove (302), an annular airbag ring (303) and a sealing strip (304). The sealing disc (301) has a mounting groove (302) on its side. The annular airbag ring (303) is installed inside the mounting groove (302) through a pipe. The sealing strip (304) is installed on the outer surface of the annular airbag ring (303).

2. The combined vacuum butterfly valve disc structure according to claim 1, characterized in that, The annular airbag ring (303) and the sealing strip (304) are fixedly connected, and there are two sets of annular airbag ring (303) and sealing strip (304).

3. The combined vacuum butterfly valve disc structure according to claim 1, characterized in that, The valve body (1) is equipped with assembly flanges (4) on its front and rear sides, and the valve body (1) and assembly flanges (4) are an integrated structure.

4. The combined vacuum butterfly valve disc structure according to claim 1, characterized in that, An auxiliary end (5) is provided on the right side of the valve body (1), and a control end (6) is installed on the left side of the valve body (1).

5. The combined vacuum butterfly valve disc structure according to claim 1, characterized in that, The inner wall of the valve body (1) is fitted with a rubber ring (7), and an auxiliary component (8) for auxiliary air extraction detection is provided in the middle of the lower end of the valve body (1).

6. The combined vacuum butterfly valve disc structure according to claim 5, characterized in that, The auxiliary component (8) includes a extraction tank (801) and a blocking block (802), and the blocking block (802) is provided inside the extraction tank (801).

7. The combined vacuum butterfly valve disc structure according to claim 6, characterized in that, The auxiliary component (8) also includes a sampling pipe (803) and an electric push rod (804). The lower end of the blocking block (802) is equipped with the sampling pipe (803), and the side of the sampling pipe (803) is equipped with the electric push rod (804).

8. The combined vacuum butterfly valve disc structure according to claim 7, characterized in that, The extraction trough (801) and the plugging block (802) are interference fits, and the plugging block (802) and the extraction pipe (803) are fixedly connected.

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