A flexible intercepting device

Abstract

The present invention relates to the technical field of drainage equipment, and in particular to a flexible intercepting device, which includes: an inlet and outlet, an outer shell and a rubber sleeve, wherein the outer shell is arranged outside the rubber sleeve and is sealed and connected to the rubber sleeve, a pressure chamber is formed between the outer shell and the rubber sleeve, the inlet and outlet are connected to the pressure chamber, and a through-flow channel is built into the rubber sleeve; a first sealing member is arranged on the inner wall of the rubber sleeve, and the first sealing member is located at the closed position of the rubber sleeve; a second sealing member is also arranged on the inner wall of the first sealing member, and the second sealing member is located on the first sealing member at the highest convex point of the closed position of the rubber sleeve. The present invention can achieve complete blocking of the flow channel and zero leakage under relatively low pressure (such as air pressure below 2 bar), and the flexible intercepting device can be opened or closed quickly, is safe and reliable, and has a wide range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of drainage equipment, and in particular to a flexible intercepting device. Background Art

[0002] The general structure of the flexible intercepting device in the prior art includes a rubber sleeve and an outer shell. The rubber sleeve has a flow channel for the water supply flow to flow through. A pressure chamber is formed between the rubber sleeve and the outer shell. After the pressurized gas is filled into the pressure chamber, the upper and lower parts or the left and right parts of the rubber sleeve are relatively deformed to close the flow channel, or the upper and lower parts and the left and right parts of the rubber sleeve are relatively deformed to close the flow channel. Under this structure, in order to achieve the complete closure of the rubber sleeve and prevent water from leaking, a gas pressure of more than 4 bar must be filled. If the gas pressure is too high, there is a certain risk during installation and use. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a flexible shut-off device that overcomes the above problems or at least partially solves the above problems.

[0004] The present invention provides a flexible intercepting device, comprising:

[0005] import and export;

[0006] An outer shell and a rubber sleeve, wherein the outer shell is arranged outside the rubber sleeve and is sealed with the rubber sleeve, a pressure chamber is formed between the outer shell and the rubber sleeve, the inlet and outlet are connected with the pressure chamber, and a through-flow channel is built into the rubber sleeve;

[0007] The inner wall of the rubber sleeve is provided with a first seal, and the first seal is located at the closed position of the rubber sleeve; the inner wall of the first seal is provided with a second seal, and the second seal is located on the second seal at the highest convex point of the closed position of the rubber sleeve.

[0008] Preferably, the first sealing member is adhered to the inner surface of the rubber sleeve;

[0009] And / or, the first sealing component is made of rubber, and the hardness of the first sealing component is not greater than the hardness of the rubber sleeve.

[0010] Preferably, the second sealing member is adhered to the inner surface of the first sealing member;

[0011] And / or, the second sealing member is made of rubber, and the hardness of the second sealing member is not higher than the hardness of the rubber sleeve.

[0012] And / or, the second sealing member is made of rubber, and the hardness of the second sealing member is not higher than the hardness of the rubber sleeve.

[0013] Preferably, the first sealing member is a sealing convex ring, and the shape of the sealing convex ring is adapted to the shape of the inner wall of the rubber sleeve.

[0014] Preferably, the end of the rubber sleeve is connected to the end of the outer shell through a flange.

[0015] Preferably, an outer edge is provided at the end of the rubber sleeve, a flange connection portion is provided at the end of the outer shell, and the outer edge is sandwiched between the flange plate and the flange connection portion.

[0016] Preferably, two second sealing members are provided, and the second sealing members are arranged opposite to each other on the inner surface of the first sealing member.

[0017] Preferably, four second seals are provided, and the second seals are circumferentially spaced apart on the inner surface of the first seal.

[0018] Preferably, the rubber sleeve and the first sealing component are vulcanized into an integral structure.

[0019] Preferably, the first sealing component and the second sealing component are vulcanized into an integral structure.

[0020] The present invention utilizes the above structure to charge pressurized gas, liquid or oil-gas mixture into the pressure chamber through the inlet and outlet holes. The rubber sleeve is deformed under the action of pressure. When the rubber sleeve is deformed to the maximum deformation, the first sealing member can be filled between the contact surfaces of the rubber sleeve, and the second sealing member is filled in the gap at the maximum deformation position of the rubber sleeve. It can achieve zero leakage when the flow channel is completely cut off under a relatively low pressure (such as air pressure below 2 bar), and under the action of low air pressure, the flexible intercepting device can be opened or closed at a faster speed, which is safe and reliable and has a wide range of applications.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Also, throughout the accompanying drawings, the same reference figures are used to represent the same components. In the drawings:

[0023] Figure 1 A schematic axial cross-sectional view of the flexible shut-off device in an embodiment of the present invention is shown.

[0024] Figure 2 yes Figure 1 AA cross-sectional view of the second sealing member of the flexible shut-off device arrangement 2.

[0025] Figure 3 yes Figure 1 AA cross-sectional view of the flexible shut-off device setting 4 second seal.

[0026] Figure 4 Bit Figure 1 A partial enlarged view of point B in the middle.

[0027] Among them, 1-outer shell, 10-pressurized chamber, 11-flange connecting part, 12-flange plate, 2-rubber sleeve, 20-circulation channel, 21-first sealing member, 22-second sealing member, 23-outer edge. DETAILED DESCRIPTION

[0028] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0029] The first embodiment of the present invention provides a flexible intercepting device, such as Figure 1 As shown, it includes: an outer shell 1 and a rubber sleeve 2, a through-flow channel 20 is arranged inside the rubber sleeve 2, the flow channel 20 is used for circulating water, an inlet and outlet are arranged on the outer shell 1, the outer shell 1 is arranged outside the rubber sleeve 2, and is sealed and connected with the rubber sleeve 2, a pressure chamber 10 is formed between the inner wall of the outer shell 1 and the inner wall of the rubber sleeve 2, the inlet and outlet are connected with the pressure chamber 10, after the pressure gas is filled into the pressure chamber 10 through the inlet and outlet, the rubber sleeve 2 is deformed under the action of pressure, when the rubber sleeve 2 is deformed to fit the inner wall, the flow channel 20 is cut off, after the pressure gas in the punching chamber 10 is released through the inlet and outlet, the rubber sleeve 2 recovers its deformation, and the flow channel 20 is connected;

[0030] A first sealing member 21 is arranged on the inner wall of the rubber sleeve 2. Figure 4As shown, the first sealing member 21 is at least partially located at the closed position of the rubber sleeve 2. In this embodiment, the closed position of the rubber sleeve 2 refers to the position where the inner wall of the rubber sleeve 2 fits when the flow channel 20 is cut off. The cross-sectional width of the first sealing member 21 at least partially overlaps with the cross-sectional width of the fitting position when the rubber sleeve 2 is closed. If it is necessary to achieve low-pressure sealing of the flexible shut-off device, when the low pressure is filled into the pressure chamber 10 and the shut-off channel 20 is cut off, the closed position of the rubber sleeve 2 is deformed into an arc shape, and there will be gaps between the two arc surfaces or the four arc surfaces for water leakage. In the prior art, if the gap is to be avoided or reduced, it is necessary to fill the pressure chamber 10 with a sufficiently large pressure. In this embodiment, the first sealing member 21 is used to fill the inner wall gap of the rubber sleeve 2, so that the sealing of the rubber sleeve 2 under the action of low pressure can be achieved, with low cost and good sealing effect.

[0031] A second sealing member 22 is also provided on the inner wall of the first sealing member 21. Figure 4 As shown, the second sealing member 22 is located on the first sealing member 21 at the highest convex point of the closed position of the rubber sleeve 2. The highest convex point of the closed position of the rubber sleeve 2 in this embodiment refers to the point where the distance between the rubber sleeve 2 and the outer shell 1 is the largest when the rubber sleeve 2 is fully closed. If the closed position of the rubber sleeve 2 is axially located in the middle of the rubber sleeve 2, the middle part of the rubber sleeve 2 will be deformed in an arc shape when the rubber sleeve 2 is in the closed position. The point with the largest distance between the arc and the outer shell 1 is the highest convex point. There is a gap between the rubber sleeve 1 where the highest convex points of the two arc surfaces or the four arc surfaces are located, and the rubber deformation at the highest position of the closed position of the rubber sleeve 2 is more difficult. Even if a sufficiently large pressure is charged into the pressure chamber 10, the water leakage problem cannot be solved. In the present application, a second sealing member 22 is arranged at the highest convex point of the closed position of the rubber sleeve. The second sealing member 22 fills the gap at the maximum deformation point, and the complete sealing of the rubber sleeve 2 can be achieved without high pressure.

[0032] The present invention utilizes the above structure to achieve zero leakage sealing when the rubber sleeve 2 is closed under the cooperation of the first seal 21 and the second seal 22, and the required pressure is relatively small, so that the installation and use of the flexible shut-off device is safe, the sealing effect is good, and the application range is wider.

[0033] A flexible intercepting device of the present invention will be described in detail below:

[0034] The first seal 21 is a sealing convex ring, and its cross-sectional shape is adapted to the shape of the rubber sleeve 1 in the same cross-sectional shape. Specifically, the rubber sleeve 1 is circular, and the first seal 21 is also circular accordingly. The first seal 21 can be pasted on the inner surface of the rubber sleeve 1, or it can be vulcanized with the rubber sleeve 2 to form an integrated structure by vulcanization. Before the rubber sleeve 2 of the flexible shut-off device is combined with the outer shell 1, the first seal 21 is combined with the rubber sleeve 1 by pasting or vulcanization to form an integrated structure, which has a simple structure and is easy to install. As a deformation, taking the upper and lower sides of the rubber sleeve 2 as an example of deformation and closure, a half-circle sealing convex ring can be set on the inner wall of the lower half or the upper half of the rubber sleeve 2. At this time, the sealing convex ring is adapted to the deformed half side of the rubber sleeve 2.

[0035] The material of the first sealing component 21 is rubber, and the material of the rubber sleeve 1 is also rubber. In this embodiment, the hardness of the rubber material used for the first sealing component 21 is not greater than the hardness of the rubber material used for the rubber sleeve 1. In this way, the first sealing component 21 can deform along with the rubber sleeve 1, and the deformation difficulty of the rubber sleeve 1 can be avoided due to the excessive hardness of the material of the first sealing component 21.

[0036] The second sealing member 22 is a sealing boss, which can be adhered to the inner surface of the first sealing member 21, or can be vulcanized with the first sealing member 21 to form an integral structure. Before the rubber sleeve 2 of the flexible shut-off device is combined with the outer shell 1, the first sealing member 21 is combined with the rubber sleeve 2 to form an integral structure by adhering or vulcanizing. After determining the highest convex point of the closed position of the rubber sleeve 2, the second sealing member 22 is adhered or vulcanized to the corresponding position of the first sealing member 21, which is convenient for positioning and simple to operate.

[0037] The material of the second sealing member 22 is rubber, and the material of the rubber sleeve 1 is also rubber. In this embodiment, the hardness of the rubber material used for the second sealing member 22 is not greater than the hardness of the rubber material used for the rubber sleeve 1. In this way, the second sealing member 22 can be deformed along with the deformation of the rubber sleeve 1, and the deformation difficulty of the rubber sleeve 1 can be avoided due to the excessive hardness of the material of the second sealing member 22. Further preferably, in this embodiment, the hardness of the rubber material of the second sealing member 22 is not greater than the hardness of the rubber material of the first sealing member 21.

[0038] The rubber sleeve 2 is cylindrical, and the outer shell 1 is also cylindrical. The diameter of the sleeve in the middle part of the outer shell 1 is larger than the diameter of the rubber sleeve 2. The inner diameter of the outer shell 1 near the two ends is the same as the outer diameter of the rubber sleeve 2. Therefore, the outer shell 1 is covered outside the rubber sleeve 2, and a section of the outer shell 1 near the end is in contact with the outer wall of the rubber sleeve 2, and the end of the rubber sleeve 2 is connected to the end of the outer shell 1 through a flange 11. The sealed pressure chamber 10 formed by the outer shell 1 and the rubber sleeve 2 is filled with pressurized gas into the pressure chamber 20. The rubber sleeve 2 is deformed inwardly under the action of pressure, closing the circulation channel 20, and the pressure chamber 20 is deflated and depressurized. The rubber sleeve 2 recovers its deformation and the circulation channel 20 is connected.

[0039] Furthermore, in the present invention, an outer edge 23 is provided at the end of the rubber sleeve 21, and a flange connection portion 11 is provided at the end of the outer shell 1. The outer edge 23 is clamped between the flange plate 12 and the flange connection portion 11. The flange plate 12, the outer edge 23 and the flange connection portion 11 are fixed together by bolts. The outer edge 23 and the rubber sleeve 2 are an integral structure, which plays both a connecting role and a sealing role, is easy to install, and has a good sealing effect.

[0040] Further, in the present invention, see Figure 2 As shown, when the circulation channel 2 is closed, the upper and lower sides of the rubber sleeve 2 are deformed and closed, and two second sealing members 22 are provided, which are respectively provided at the highest convex point of the upper rubber sleeve 2 that is deformed downward and the highest convex point of the lower rubber sleeve 2 that is deformed upward. When the rubber sleeve 2 is closed, the two second sealing members 22 fit and fill the gap at the highest convex position; see Figure 3 As shown, when the circulation channel 2 is closed, the four sides of the rubber sleeve 2 are deformed and closed, and four second sealing members 22 are provided, which are respectively provided at the highest convex point of the rubber sleeve 2 at each deformed part. When the rubber sleeve 2 is closed, the four second sealing members 22 fit and fill the gap at the highest convex position. Under the bottom air pressure, the rubber sleeve 2 has good sealing performance when closed and has a simple structure.

[0041] Furthermore, in the present invention, the pressure chamber 10 can be filled with pressurized gas or pressurized liquid.

[0042] Furthermore, in the present invention, the inlet and outlet can be two ports, an inlet and an outlet, provided on the outer shell 1, and a control valve is provided on the pipeline connected to each port to control the punching or pressure relief of the pressure chamber 10; the inlet and outlet can also be provided on a port on the outer shell 1, and a control valve that can control the punching and pressure relief functions is provided on the pipeline connected to the port. Preferably, the inlet and outlet are provided on the outer shell 1, and similarly, the inlet and outlet can also be provided on the rubber sleeve 2, as long as they can be connected to the pressure chamber 10, and the specific setting position can be set according to actual needs.

[0043] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A flexible intercepting device, characterized in that: include: import and export; An outer shell (1) and a rubber sleeve (2), wherein the outer shell (1) is arranged outside the rubber sleeve (2) and is sealedly connected to the rubber sleeve (2), a pressure chamber (10) is formed between the outer shell (1) and the rubber sleeve (2), the inlet and outlet are in communication with the pressure chamber (10), and the rubber sleeve (2) is internally provided with a through-flow channel (20); The inner wall of the rubber sleeve (2) is provided with a first sealing member (21), and the first sealing member (21) is located at the closed position of the rubber sleeve (2); the inner wall of the first sealing member (21) is provided with a second sealing member (22), and the second sealing member (22) is located on the highest convex point of the first sealing member (21) at the closed position of the rubber sleeve (2), and the highest convex point of the closed position of the rubber sleeve (2) refers to the point where the distance between the rubber sleeve (2) and the outer shell (1) is the largest when the rubber sleeve (2) is completely closed; The second sealing member (22) is adhered to the inner surface of the first sealing member (21); the material of the second sealing member (22) is rubber; and the hardness of the second sealing member (22) is not higher than the hardness of the rubber sleeve (2); The first sealing member (21) is a sealing convex ring, the shape of the sealing convex ring being adapted to the shape of the inner wall of the rubber sleeve (2).

2. A flexible shut-off device according to claim 1, characterized in that: The end of the rubber sleeve (2) is connected to the end of the outer shell (1) via a flange (12).

3. A flexible shut-off device as claimed in claim 2, characterized in that: An outer edge (23) is provided at the end of the rubber sleeve (2), a flange connection portion (11) is provided at the end of the outer shell (1), and the outer edge (23) is sandwiched between the flange plate (12) and the flange connection portion (11).

4. A flexible shut-off device according to claim 1, characterized in that: Two second sealing members (22) are provided, and the second sealing members (22) are arranged opposite to each other on the inner surface of the first sealing member (21).

5. A flexible shut-off device as claimed in claim 1, characterized in that: Four second sealing members (22) are provided, and the second sealing members (22) are arranged on the inner surface of the first sealing member (21) at circumferential intervals.

6. A flexible shut-off device according to claim 1, characterized in that: The rubber sleeve (2) and the first sealing component (21) are vulcanized into an integrated structure.

7. A flexible shut-off device according to claim 1, characterized in that: The first sealing component (21) and the second sealing component (22) are vulcanized into an integrated structure.

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