Lip type closing device for neck bush of air direct-pressure pinch valve

Abstract

The utility model discloses an air direct pressure pinch valve neck bush lip type closing device which comprises a neck bush body, at least two sections of protruding lip bands are arranged in the middle of the neck bush body, the lip bands are elastic and attached to the inner wall of the neck bush body, the broken portions of the lip bands form lip corner structures, and the lip corner structures are connected with the neck bush body. When the outer side of the neck bush main body is compressed by air to close an inner channel of the neck bush, the inner walls of the lip bands are attached to each other or attached to the inner wall of the neck bush main body to seal the channel; according to the design, a plurality of lip bands are additionally arranged in the channel of the neck bush, and the lip bands of the neck bush have good elasticity, so that the neck bush does not need to be pushed by large air pressure to tightly close the pinch valve through the lip bands, the stress burden of the whole neck bush can be relieved, and the lip angle structure further facilitates the closing effect of the neck bush; the operation condition is improved, the service life is prolonged, the safety of the pinch valve is improved, and driving energy is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pinch valve, specifically relates to an air direct pressure type pinch valve inner bushing lip type tightly closed device. BACKGROUND

[0002] Air direct pressure type pinch valve is a kind of valve for controlling fluid flow, it utilizes compressed air to control the closing and opening of pinch valve.This valve is composed of an external closed valve body and an internal elastic tube called inner bushing, the inner wall of elastic tube is pipeline channel, and the outer wall of elastic tube and valve body form closed air chamber.When the air chamber is filled with compressed air, elastic tube is flattened, and the flow of fluid in pipeline is blocked;When compressed air is removed, elastic tube restores its original shape by its own elasticity, and allows fluid to pass through.

[0003] The unique working principle of air direct pressure type pinch valve makes it highlight good passability and blocking property for gas-solid and liquid-solid fluid medium, and it has the characteristics of rapid blocking and opening, and is widely used in chemical industry, food, pharmaceutical, water treatment and other industries.In addition, air direct pressure type pinch valve has the characteristics of simple structure, convenient operation, good sealing performance, low maintenance cost, and its elastic tube as a consumable part can be replaced, so it can be conveniently repaired or replaced after wear or damage, ensuring long-term use of the valve.

[0004] As shown in Figure 4 The inner surface of the traditional pinch valve inner bushing is flat, and a larger air pressure is needed to completely close the pinch valve inner bushing during the closing process, resulting in large energy consumption and large stress on the inner bushing, which shortens the service life of the inner bushing and reduces safety.

[0005] As shown in Figure 5 And Figure 6 The inner surface of the improved pinch valve inner bushing has a convex sealing strip at the sealing position, which is attached to the inner wall of the inner bushing, so that the pinch valve inner bushing is relatively easier to close, but the folding position is relatively thick, and a larger compression force is still needed to close the inner bushing.

[0006] Therefore, we propose an air direct pressure pinch valve inner bushing lip type tightly closed device. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at providing an air direct pressure pinch valve inner bushing lip type tightly closed device to solve the problems raised in the above background technology.

[0008] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of air direct pressure pinch valve inner bushing lip type tightly closed device, including inner bushing main body, the middle part of the inner bushing main body has at least two protruding lip strips, the lip strip has elasticity, the lip strip is attached to the inner wall of inner bushing main body, the lip strip break point forms lip angle, when the outside of inner bushing main body is compressed by air to make inner bushing internal passage closed, the inner wall of lip strip is attached to each other or with the inner wall of inner bushing main body to realize the sealing of passage.

[0009] Further, the thickness of the interval part of the multi-section sealing strip is less than the thickness of the sealing strip, which plays a role in easy sealing of the lip angle in the sealing state.

[0010] Further, the material of the lip strip includes rubber.

[0011] Further, the lip strip and the inner bushing main body are of an integral structure or the lip strip is fixed to the inner wall of the inner bushing main body by bonding.

[0012] Further, the inner bushing main body is fixedly installed inside the valve body.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The design increases a plurality of lip strips in the inner bushing passage, and the inner bushing lip strip has good elasticity, so that the inner bushing can be tightly closed by the lip strip without being pushed by a large air pressure, the stress burden of the entire inner bushing can be reduced, the break point of the lip strip forms a lip angle structure, which is further conducive to the closing effect of the inner bushing, improves the operating condition, prolongs the service life, improves the safety of the pinch valve, and saves driving energy. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, which is used together with embodiments of the utility model to explain the utility model, and does not constitute a limitation on the utility model.

[0016] Figure 1 It is a sectional view of the utility model;

[0017] Figure 2 It is an open state schematic view of the inner bushing lip type tightly closed device of the utility model;

[0018] Figure 3 It is a closed state schematic view of the inner bushing lip type tightly closed device of the utility model;

[0019] Figure 4 It is a schematic view of a traditional pinch valve inner bushing;

[0020] Figure 5 It is a schematic view of a modified pinch valve inner bushing.

[0021] Figure 6 Improved type of pinch valve inner sleeve front view.

[0022] In the figure: 100, inner sleeve body; 200, lip band; 300, lip angle; 400, valve body; 401, air hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0024] Referring to Figures 1-3 The utility model provides a kind of technical scheme of air direct pressure pinch valve inner sleeve lip type tight closing device, including inner sleeve body (100), it is characterized by: the inside of the inner sleeve body (100) is the passage of pinch valve, the inner sleeve body (100) has at least two protruding lip bands (200), the lip band (200) has elasticity, the lip band (200) is attached to the inner wall of inner sleeve body (100), the lip band (200) is at inner sleeve sealing position, the lip band (200) break position forms lip angle (300), when the outside of inner sleeve body (100) is compressed by air to make inner sleeve internal passage closed, the inner wall of lip band (200) is attached or attached with the inner wall of inner sleeve body (100) to realize the sealing of passage.

[0025] Wherein, the lip angle 300 of pinch valve inner sleeve lip type tight closing device is more easily deformed in the deformation process of lip band 200, so as to guide the deformation direction and position of lip band and make lip angle fold closed, form seal, so that pinch valve inner sleeve lip type tight closing device is easily sealed closed under smaller air pressure.

[0026] The working principle and use process of the utility model:

[0027] Air pump injects compressed air to the inside of valve body 400 through air hole 401, and deforms and closes inner sleeve body 100 using air pressure, and lip band 200 on the inner wall of inner sleeve body 100 is extruded and closes to the middle of valve body 400, and with the increase of compressed air flow, lip band 200 installed on the inner wall of inner sleeve body 100 changes with the change of inner sleeve body 100, and since lip band 200 has elasticity, when compressed air pushes inner sleeve body 100 to close, the part of lip band 200 will close first, and the role of lip angle 300 in this closing process is to guide lip band 200 to fold at lip angle, so that lip band 200 is more easily closed, thereby reducing the stress burden of the whole inner sleeve, improving its operating condition, prolonging service life, improving pinch valve safety, and saving driving energy.

[0028] The above merely describes a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent substitutions or changes within the technical range disclosed by the present application, which should be covered within the scope of protection of the present application.

Claims

1. An air direct pressure pinch valve inner sleeve lip tight shut device, comprising an inner sleeve body (100), characterized in that: The inner side of the inner sleeve body (100) is the passage of the pinch valve, the inner sleeve body (100) has at least two convex lip strips (200), the lip strips (200) have elasticity, the lip strips (200) are attached to the inner wall of the inner sleeve body (100), the lip strips (200) are at the sealing position of the inner sleeve, the disconnected position of the lip strips (200) forms a lip corner (300), when the outer side of the inner sleeve body (100) is compressed by air to close the inner passage of the inner sleeve, the inner wall of the lip strips (200) is attached to the inner wall of the inner sleeve body (100) to achieve sealing of the passage.

2. An air direct pinch valve inner sleeve lip seal device as defined in claim 1 wherein: The thickness of the interval position of the multi-section lip strips (200) is smaller than the thickness of the lip strips (200), which plays an easy sealing role of the lip corner (300) in the sealing state.

3. An air direct pinch valve inner liner lip seal device as defined in claim 1 wherein: The material of the inner sleeve lip strips (200) includes rubber.

4. An air direct pinch clamp valve inner sleeve lip seal device according to claim 1, wherein: The lip strips (200) and the inner sleeve body (100) are an integral structure, or the lip strips (200) are fixed to the inner wall of the inner sleeve body (100) by bonding.

5. An air direct pinch clamp valve inner liner bushing lip seal apparatus as defined in claim 1 wherein: The inner sleeve body (100) is fixedly installed in the valve body (400).

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