Air bag type flexible cut-off device

Abstract

The air bag type flexible cut-off device comprises a cut-off device body, inner cavities are formed in the two sides of the cut-off device body, connecting flanges are arranged on the opening faces of the two sides of the cut-off device body, and second rubber sleeves are arranged in the inner cavities of the cut-off device body. A first rubber sleeve is arranged above the outer surface of the second rubber sleeve, a second air cavity is formed between the inner surface of the cut-off device body and the outer surface of the first rubber sleeve, and a first air cavity is formed between the inner surface of the first rubber sleeve and the outer surface of the second rubber sleeve. According to the flexible cut-off device, a layer of rubber sleeve is arranged in the flexible cut-off device in the prior art, after the second air cavity is inflated and a gap is formed in the inner surface of the second rubber sleeve, air with certain pressure can be inflated into the second air pipe, so that the second rubber sleeve is deformed to a certain degree, and the gap is filled and leveled up; therefore, complete sealing is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible intercepting devices, in particular to an airbag type flexible intercepting device. Background Art

[0002] The flexible intercepting device comprises an outer shell and a rubber sleeve, a pressurized chamber is formed between the outer shell and the rubber sleeve, and the rubber sleeve has a flow channel for water to flow through. By filling the pressurized chamber with pressurized gas, the rubber sleeve is relatively deformed, the flow channel becomes smaller until the flow channel is cut off, and the flexible intercepting device is closed. After the pressurized chamber is deflated, the rubber sleeve resumes its deformation, the flow channel gradually becomes larger to the flow channel, and the flexible intercepting device is opened.

[0003] However, when the shut-off device of the prior art deforms the rubber sleeve, it often becomes more difficult as it approaches a completely closed state, and requires very strong air pressure to deform again. It is often extremely dangerous when the air pressure is too high. However, if very strong gas pressure is not filled in, there is often a certain gap on the inner wall of the rubber sleeve at the closed position, and complete sealing cannot be achieved. Utility Model Content

[0004] The purpose of the utility model is to provide an airbag type flexible intercepting device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A gas bag type flexible intercepting device comprises an intercepting device body, inner cavities are formed on both sides of the intercepting device body, connecting flanges are provided on the opening surfaces on both sides of the intercepting device body, a second rubber sleeve is provided at the inner cavity of the intercepting device body, two ends of the second rubber sleeve are connected to two ends of the intercepting device body, a first rubber sleeve is provided above the outer surface of the second rubber sleeve, two ends of the first rubber sleeve are connected to two ends of the intercepting device body, a second air cavity is formed between the inner surface of the intercepting device body and the outer surface of the first rubber sleeve, and a first air cavity is formed between the inner surface of the first rubber sleeve and the outer surface of the second rubber sleeve.

[0007] Preferably, support legs are provided at the bottom of the intercepting device body.

[0008] Preferably, a first air pipe is provided at the top front end and the rear end of the intercepting device body, and the first air pipe is communicated with the second air cavity.

[0009] Preferably, a second air pipe is provided on one side of the intercepting device body, and the second air pipe is communicated with the first air cavity.

[0010] Preferably, a plurality of sealing blocks are provided on the inner surface of the first rubber sleeve.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model is an airbag type flexible intercepting device. A layer of rubber sleeve is arranged inside the flexible intercepting device of the prior art. When intercepting, when a certain pressure of gas is filled from the first air pipe, the middle part of the first rubber sleeve and the second rubber sleeve will be deformed together. When a sufficient amount of gas is filled, when the inner surface of the second rubber sleeve still has a certain gap, a certain pressure of gas can be filled into the second air pipe to deform the second rubber sleeve to a certain extent, so that the gap is filled, thereby achieving complete sealing.

[0013] 2. In the utility model, an airbag-type flexible intercepting device is provided with a plurality of sealing blocks on the inner surface of the second rubber sleeve. During the deformation of the second rubber sleeve, the plurality of sealing blocks will contact each other, thereby improving the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0016] In the figure: 1. intercepting device body; 2. first air pipe; 3. supporting leg; 4. connecting flange; 5. sealing block; 6. second air pipe; 7. first air cavity; 8. first rubber sleeve; 9. second air cavity; 10. second rubber sleeve. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figure 1-2 , the utility model provides a technical solution:

[0021] A gas bag type flexible intercepting device comprises an intercepting device body 1, inner cavities are provided on both sides of the intercepting device body 1, connecting flanges 4 are provided on the opening surfaces on both sides of the intercepting device body 1, a second rubber sleeve 10 is provided at the inner cavity of the intercepting device body 1, two ends of the second rubber sleeve 10 are connected to two ends of the intercepting device body 1, a first rubber sleeve 8 is provided above the outer surface of the second rubber sleeve 10, two ends of the first rubber sleeve 8 are connected to two ends of the intercepting device body 1, a second air cavity 9 is provided between the inner surface of the intercepting device body 1 and the outer surface of the first rubber sleeve 8, and a first air cavity 7 is provided between the inner surface of the first rubber sleeve 8 and the outer surface of the second rubber sleeve 10.

[0022] Furthermore, a supporting leg 3 is provided at the bottom of the intercepting device body 1 .

[0023] Furthermore, a first air pipe 2 is provided at the top front end and the rear end of the intercepting device body 1 , and the first air pipe 2 is communicated with the second air cavity 9 .

[0024] Furthermore, a second air pipe 6 is provided on one side of the intercepting device body 1 , and the second air pipe 6 is communicated with the first air cavity 7 .

[0025] Furthermore, a plurality of sealing blocks 5 are disposed on the inner surface of the first rubber sleeve 10 . During the deformation of the second rubber sleeve 10 , the plurality of sealing blocks 5 will come into contact with each other, thereby improving the sealing performance of the device.

[0026] Working principle: The utility model arranges another layer of rubber sleeve inside the flexible intercepting device of the prior art. When intercepting, when gas of a certain pressure is filled into the first air pipe 2, the middle part of the first rubber sleeve 8 and the second rubber sleeve 10 will be deformed together. When a sufficient amount of gas is filled, when the inner surface of the second rubber sleeve 10 still has a certain gap, gas of a certain pressure can be filled into the second air pipe 6 to deform the second rubber sleeve 10 to fill the gap and achieve complete sealing.

[0027] It should be noted that a stop valve is provided at the second air pipe 6 to prevent the gas inside the second rubber sleeve 10 from flowing back. During use, the gas filled from the second air pipe 6 will not be discharged again, and the gas filled from the first air pipe 2 will be discharged from the first air pipe 2 without the need for shutoff.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airbag-type flexible intercepting device, comprising an intercepting device body (1), characterized in that: The intercepting device body (1) is provided with inner cavities on both sides, and connecting flanges (4) are provided on the open surfaces on both sides of the intercepting device body (1). A second rubber sleeve (10) is provided at the inner cavity of the intercepting device body (1), and the two ends of the second rubber sleeve (10) are connected to the two ends of the intercepting device body (1). A first rubber sleeve (8) is provided above the outer surface of the second rubber sleeve (10), and the two ends of the first rubber sleeve (8) are connected to the two ends of the intercepting device body (1). A second air cavity (9) is provided between the inner surface of the intercepting device body (1) and the outer surface of the first rubber sleeve (8), and a first air cavity (7) is provided between the inner surface of the first rubber sleeve (8) and the outer surface of the second rubber sleeve (10).

2. The airbag type flexible intercepting device according to claim 1, characterized in that: The bottom of the intercepting device body (1) is provided with supporting legs (3).

3. The airbag type flexible intercepting device according to claim 1, characterized in that: A first air pipe (2) is provided at the top front end and the rear end of the intercepting device body (1), and the first air pipe (2) is connected to the second air cavity (9).

4. The airbag type flexible intercepting device according to claim 1, characterized in that: A second air pipe (6) is provided on one side of the intercepting device body (1), and the second air pipe (6) is connected to the first air cavity (7).

5. The airbag type flexible intercepting device according to claim 1, characterized in that: The inner surface of the second rubber sleeve (10) is provided with a plurality of sealing blocks (5).

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