Gas film valve

Abstract

The utility model relates to the technical field of valves, and discloses a gas film valve which comprises a valve body, and a stop mechanism is arranged in the valve body. According to the gas film valve, by arranging the cut-off mechanism, when the gas film valve is installed, the hose and the two flange plates are fixedly connected through the two clamps, when materials need to be cut off, gas is injected into the first gas inlet connector, so that the gas pressure in the valve body is increased, the internal pressure intensity of the hose is smaller than the external pressure intensity, the hose shrinks inwards, and material flowing is cut off; the pull rope pulls the movable block to enable the spring to be stretched, gas is injected into the second gas inlet connector, then the annular gas bag expands, the hose is further made to contract inwards, when material circulation needs to be released, the second gas inlet connector and the first gas inlet connector successively deflate, the spring returns, the pull rope assists the hose to restore the original shape, and the materials normally circulate. The compression hose is adopted for sealing, material blocking and material shearing are not prone to being caused, the structure is simple, and repairing is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an air film valve. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of conveyed materials. According to their functions, they can be divided into stop valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems, and have functions such as shutoff, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. There are various types of stop valves, which use different power systems to shut off materials. With the use of valves in daily life, an air film valve has appeared. An air film valve refers to a valve that uses a film or hose as a shutoff component to shut off and release materials.

[0003] After searching, a switch valve in the Chinese utility model with patent number CN217463407U includes: a valve body and a driving structure, the driving structure and the valve body are sealed and connected, a valve stem is movably arranged in the valve body, a gate is arranged at one end of the valve stem, and the gate is suitable for blocking the valve seat under the drive of the valve stem, the driving structure includes a shell and a piston, a cavity is reserved in the shell, the piston is suitable for being movably arranged in the cavity, the piston divides the cavity into a first cavity and a second cavity, a first through hole and a second through hole are arranged on the shell, the first through hole is connected to the first cavity, and the second through hole is connected to the second cavity, the valve stem in the valve body penetrates the cavity, the valve stem is fixedly connected to the piston, and the piston is suitable for driving the valve stem to move, and the driving structure and the valve body are integrated to reduce the connecting parts, and eliminate the valve body and the driving structure. The error of the mechanical connection of the execution structure is reduced, the risk of jamming and vibration is reduced, and the valve body is ensured to be smoother in the operation process. The valve body and the drive structure occupy less space as a whole and can be installed in a space-restricted location. Although the switch valve can reduce the jamming and vibration of the execution structure and the valve body is smoother in the operation process, the switch valve uses the valve stem and the gate to cut off the material, which is easy to cause jamming and shearing, and the sealing is not guaranteed. After long-term use, some materials will enter the switch valve through the gap of the gate. The actuators use multiple valves as accessories, have more structures, and are more troublesome to inspect and maintain. Therefore, it is proposed to have fewer actuators, use a compression hose for sealing, which is not easy to cause jamming and shearing, and has a simple structure and is easy to repair. A gas film valve Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an air film valve, which has the advantages of fewer actuators, using a compression hose for sealing, not prone to material jamming and shearing, and a simple structure that is easy to repair. It solves the problem that the switch valve in the Chinese utility model with patent number CN217463407U uses the cooperation of a valve stem and a gate plate to cut off the material, which is prone to material jamming and shearing, and the sealing is not guaranteed. After long-term use, some materials will enter the inside of the switch valve through the gap of the gate plate, and the actuators use a large number of valves as accessories, with more structures and more troublesome inspection and maintenance.

[0005] In order to achieve the purpose of having fewer actuators, using a compression hose for sealing, not easily causing material jamming and shearing, and having a simple structure and easy repair, the utility model provides the following technical solutions: an air film valve, comprising a valve body, a cut-off mechanism is arranged inside the valve body, two flanges are fixedly installed on the outside of the valve body, a window frame is fixedly installed on the back of the valve body, and a transparent window is fixedly installed on the inner wall of the window frame;

[0006] The cut-off mechanism includes a sealing ring, a clamp, a hose, an air inlet interface 1, an air inlet interface 2, a mounting frame, a spring, a movable block, a pull rope and an annular air bag. The two flanges are fixedly installed with sealing rings inside, the two flanges are fixedly installed with hoses outside, the top of the valve body is fixedly installed with air inlet interface 1 and air inlet interface 2, the valve body is fixedly installed with a mounting frame inside, the mounting frame is provided with a spring inside, the mounting frame is provided with a movable block inside, the movable block is fixedly installed with a pull rope outside, and the valve body is provided with an annular air bag inside.

[0007] Furthermore, a fixing block is fixedly installed inside the valve body, the annular airbag is fixedly connected to the valve body through the fixing block, and the second air inlet interface is communicated with the annular airbag.

[0008] Furthermore, two rubber blocks are fixedly installed inside the hose, the two rubber blocks are symmetrically arranged up and down, and the outer surfaces of the two rubber blocks are arc-shaped.

[0009] Furthermore, the front end of the spring is fixedly connected to the movable block, and the rear end of the spring is fixedly connected to the installation frame.

[0010] Furthermore, a fixing column is fixedly installed inside the installation frame, and a roller is sleeved on the outside of the fixing column.

[0011] Furthermore, a bent pipe is fixedly installed inside the valve body, the bent pipe is connected to the installation frame, and the bent pipe is adapted to the pull rope.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The air film valve is provided with a cut-off mechanism. When the air film valve is installed, the hose is fixedly connected to the two flanges by two clamps. When it is necessary to cut off the material, the air pressure inside the valve body is increased by injecting gas into the air inlet interface 1. The internal pressure of the hose is less than the external pressure, and the hose contracts inwardly to cut off the flow of the material. The pull rope pulls the movable block to stretch the spring, and gas is injected into the air inlet interface 2. Then the annular airbag expands, and the hose further contracts inwardly. When it is necessary to release the material flow, the air inlet interface 2 and the air inlet interface 1 are successively deflated, the spring returns to its original position, and the hose is restored to its original state by the help of the pull rope, so that the material flows normally. The cut-off mechanism has fewer actuators and uses a compressed hose for sealing, which is not easy to cause material jamming and shearing. The structure is simple and easy to repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0015] Figure 2 It is a left side sectional view of the structure of the utility model;

[0016] Figure 3 The utility model structure Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 It is a partial three-dimensional diagram of the structure of the utility model.

[0018] In the figure: 1. valve body; 2. shut-off mechanism; 201. sealing ring; 202. clamp; 203. hose; 204. air inlet interface 1; 205. air inlet interface 2; 206. mounting frame; 207. spring; 208. movable block; 209. pull rope; 2010. annular airbag; 3. flange; 4. window frame; 5. transparent window. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-4 In this embodiment, an air film valve comprises a valve body 1, a cut-off mechanism 2 is arranged inside the valve body 1, two flanges 3 are fixedly installed outside the valve body 1, a window frame 4 is fixedly installed on the back of the valve body 1, and a transparent window 5 is fixedly installed on the inner wall of the window frame 4;

[0021] The cut-off mechanism 2 includes a sealing ring 201, a clamp 202, a hose 203, an air inlet interface 1 204, an air inlet interface 2 205, a mounting frame 206, a spring 207, a movable block 208, a pull rope 209 and an annular airbag 2010. The sealing rings 201 are fixedly installed inside the two flanges 3, the hose 203 is fixedly installed outside the two flanges 3, the air inlet interface 1 204 and the air inlet interface 2 205 are fixedly installed on the top of the valve body 1, the mounting frame 206 is fixedly installed inside the valve body 1, the spring 207 is arranged inside the mounting frame 206, the movable block 208 is arranged inside the mounting frame 206, the pull rope 209 is fixedly installed outside the movable block 208, and the annular airbag 2010 is arranged inside the valve body 1.

[0022] In the case implementation, two rubber blocks are fixedly installed inside the hose 203. The two rubber blocks are symmetrically arranged up and down, and the outer surfaces of the two rubber blocks are arc-shaped. By setting two rubber blocks with arc-shaped outer surfaces, when the hose 203 contracts inwardly, the two rubber blocks can squeeze and separate the materials, which is conducive to timely closing the material flow.

[0023] In the case implementation, a fixed column is fixedly installed inside the installation frame 206, and a roller is sleeved on the outside of the fixed column. By setting the fixed column and the roller, when the pull rope 209 is pulled, the roller can be pulled to rotate, which is beneficial to reduce the wear of the pull rope 209 and facilitate long-term use.

[0024] In the case implementation, a curved pipe is fixedly installed inside the valve body 1, the curved pipe is connected to the installation frame 206, and the curved pipe is adapted to the pull rope 209. By setting the curved pipe, the pull rope 209 can move in the curved pipe.

[0025] When implementing, follow these steps:

[0026] 1) When installing the air film valve, first, fix the two sealing rings 201 on the outside of the two flanges 3, and fix the hose 203 to the two flanges 3 through two clamps 202;

[0027] 2) When the material needs to be cut off, the air pressure inside the valve body 1 is increased by injecting air into the air inlet interface 204, the pressure inside the hose 203 is lower than the external pressure, and the hose 203 contracts inwards;

[0028] 3) Pull the rope 209 to pull the movable block 208 to stretch the spring 207, and the two rubber blocks inside are squeezed relative to each other to cut off the flow of materials, and then inject gas into the second air inlet interface 205;

[0029] 4) Finally, the annular airbag 2010 expands, further causing the hose 203 to contract inward. When the material needs to be released for circulation, the air inlet interface 205 and the air inlet interface 1 204 are successively deflated, the spring 207 returns to its original position, and the pull rope 209 assists the hose 203 to return to its original state, and the material circulates normally.

[0030] To summarize, the air film valve is provided with a cut-off mechanism 2. When the air film valve is installed, the hose 203 is fixedly connected to the two flanges 3 by two clamps 202. When it is necessary to cut off the material, the air pressure inside the valve body 1 is increased by injecting gas into the air inlet interface 1 204. The internal pressure of the hose 203 is less than the external pressure, and the hose 203 contracts inwardly to cut off the flow of material. The pull rope 209 pulls the movable block 208 to stretch the spring 207, and gas is injected into the air inlet interface 205. Then the annular airbag 2010 expands, further causing the hose 203 to contract inwardly. When it is necessary to release the material flow, the air inlet interface 205 and the air inlet interface 1 204 are successively deflated, the spring 207 returns to its original position, and the pull rope 209 assists the hose 203 to return to its original state, so that the material flows normally. The cut-off mechanism 2 has fewer actuators and uses a compressed hose 203 for sealing, which is not easy to cause material jamming and shearing. The structure is simple and easy to repair.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although 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 air film valve, comprising a valve body (1), characterized in that: A cut-off mechanism (2) is arranged inside the valve body (1), two flanges (3) are fixedly mounted on the outside of the valve body (1), a window outer frame (4) is fixedly mounted on the back of the valve body (1), and a transparent window (5) is fixedly mounted on the inner wall of the window outer frame (4); The shut-off mechanism (2) comprises a sealing ring (201), a clamp (202), a hose (203), an air inlet interface 1 (204), an air inlet interface 2 (205), a mounting frame (206), a spring (207), a movable block (208), a pull rope (209) and an annular airbag (2010); the sealing ring (201) is fixedly mounted inside the two flanges (3); the hose (203) is fixedly mounted outside the two flanges (3); and the valve body An air inlet interface 1 (204) and an air inlet interface 2 (205) are fixedly installed on the top of the main body (1); a mounting frame (206) is fixedly installed inside the valve body (1); a spring (207) is arranged inside the mounting frame (206); a movable block (208) is arranged inside the mounting frame (206); a pull rope (209) is fixedly installed outside the movable block (208); and an annular air bag (2010) is arranged inside the valve body (1).

2. The air film valve according to claim 1, characterized in that: A fixing block is fixedly installed inside the valve body (1), the annular airbag (2010) is fixedly connected to the valve body (1) via the fixing block, and the second air inlet interface (205) is in communication with the annular airbag (2010).

3. The air film valve according to claim 1, characterized in that: Two rubber blocks are fixedly installed inside the hose (203), the two rubber blocks are symmetrically arranged up and down, and the outer surfaces of the two rubber blocks are arc-shaped.

4. The air film valve according to claim 1, characterized in that: The front end of the spring (207) is fixedly connected to the movable block (208), and the rear end of the spring (207) is fixedly connected to the installation frame (206).

5. The air film valve according to claim 1, characterized in that: A fixing column is fixedly installed inside the installation frame (206), and a roller is sleeved on the outside of the fixing column.

6. The air film valve according to claim 1, characterized in that: A bent pipe is fixedly installed inside the valve body (1), the bent pipe is connected to the installation frame (206), and the bent pipe is compatible with the pull rope (209).

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