Gas circuit control non-return device

Abstract

The utility model discloses a gas circuit control non-return device, and belongs to the fluid control technology. The device comprises a base and a check valve connected with an air outlet in the base, a gas inlet and a gas outlet are formed in the base, a water cooling structure is arranged outside a gas pipeline from the gas inlet to the gas outlet, the water cooling structure comprises a water inlet and a water return port which are located in the shell, a liquid pipeline is arranged between the water inlet and the water return port, and the liquid pipeline is distributed around the gas pipeline; the check valve comprises a shell and a reverse ball which is arranged in the shell and controls opening and closing of an air channel, and the reverse ball controls opening and closing of the air channel under the action of gravity.

Description

Technical Field

[0001] The utility model belongs to fluid control technology, and in particular relates to an air path control non-return device. Background Art

[0002] The air circuit control check valve is a fluid control technology. Its working principle is based on the principles of fluid mechanics and pressure. For the air pumping check valve, it is set on the air pumping pipeline, including a reverse ball device, which relies on pressure gas as the control power. The reverse ball device on the vacuum equipment pipeline is of great significance. In order to achieve the locking effect of automatic closing, a set of control gas system is set, referred to as the air circuit control check system device. Utility Model Content

[0003] The utility model aims to provide a gas circuit control non-return device to realize the non-return function on the air extraction pipeline, and is realized by adopting the following technical scheme.

[0004] A gas path control non-return device, comprising a base and a non-return valve connected to an air outlet on the base;

[0005] An air inlet and an air outlet are provided on the base, and a water cooling structure is provided outside the gas pipeline from the air inlet to the air outlet, the water cooling structure includes a water inlet and a water return port located on the shell, a liquid pipeline is provided between the water inlet and the water return port, and the liquid pipeline is distributed around the gas pipeline;

[0006] The non-return valve comprises a shell and a check ball inside the shell for controlling the opening and closing of the airway.

[0007] Furthermore, a liquid collecting chamber is provided at the water inlet and the water return port on the base, and the liquid is divided into a plurality of liquid pipelines after entering the liquid collecting chamber; and the plurality of liquid pipelines are fixed by a mounting plate.

[0008] The liquid pipeline on the base is arranged in a spiral shape and is wound around the outside of the gas pipeline, including being fitted with the outside of the gas pipeline.

[0009] The gas line on the base is placed inside the liquid line.

[0010] The gas pipelines communicating between the air inlet and the air outlet of the base include one or more gas pipelines, and the more than one gas pipelines converge at the air inlet and / or the air outlet.

[0011] Furthermore, the check ball in the check valve closes the airway under the action of gravity, and opens the check valve by lifting the check ball under the action of gas pressure.

[0012] The check valve comprises an upper shell and a lower shell, and the connection between the upper shell and the lower shell is sealed by an O-ring.

[0013] Furthermore, the water inlet and the water return port on the base are arranged in a bottom-in and top-out manner.

[0014] Furthermore, the air inlet and the water inlet are provided with a one-way valve.

[0015] Beneficial effects: The utility model consists of a base and a check valve. The base can realize water-gas separation and can cool the gas. As the gas temperature decreases, the exhaust pressure decreases and the valve opening time is delayed. On the other hand, when the exhaust gas contains some organic chemical components, some of the organic chemical components can be converted from gas to liquid through a water cooling jacket, which can effectively reduce the emission of toxic and harmful substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an assembly diagram of the device described in the utility model;

[0017] Figure 2 It is a structural schematic diagram of the base of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the base of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the check valve of the utility model;

[0020] Figure 5 It is a schematic diagram of the internal structure of the check valve of the utility model. DETAILED DESCRIPTION

[0021] In order to explain the technical solution provided by the utility model in detail, a further introduction is given below in conjunction with the accompanying drawings of the specification.

[0022] The utility model provides an air path control check device, which is used in the exhaust pipeline to realize the reverse check function. The structure of the air path control check system usually needs to involve a water-gas separation cooling device (referring to controlling the exhaust temperature of the gas by water cooling), a valve body, a valve cover, a ball, a sealing ring and other parts. When the fluid is afraid to flow downward, the reverse ball is in an open state, and the fluid can pass through the valve body smoothly. When the fluid tries to flow in the reverse direction, the reverse ball will quickly close to prevent the fluid from continuing to flow back.

[0023] Forward flow: When the fluid flows in the direction required by the operation, the fluid enters from the inlet of the valve body, passes through the ball to the open state, and flows smoothly to the outlet. At this time, the reverse ball is in the open state and the ball is pushed open by pressure.

[0024] Reverse Flow: When the pumping pressure decreases or stops, the fluid tries to flow in the reverse direction, and the pressure difference causes the ball to close.

[0025] Combination Figure 1-5As shown, the device described in the utility model includes a base 1 and a check valve 2 connected to the gas outlet on the base 1; the base 1 is provided with an air inlet 101 and an air outlet 102, and the air inlet 101 and the air outlet 102 are connected through a gas pipeline, preferably using a main pipeline, but including the use of a plurality of gas pipelines, thereby realizing the influence of air pressure on the pipe wall during the gas extraction process, and also achieving better cooling, and more accurate control of the pressure during the gas extraction process. A water cooling structure is provided outside the gas pipeline to cool the gas.

[0026] For water cooling structure, the implementation methods include:

[0027] 1. The water inlet 103 is connected to the coolant supply, and water cooling can be adopted. After passing through the water inlet 103, the water reaches the liquid collecting chamber 107. After the inside of the liquid collecting chamber 107 is filled with water, it enters the liquid pipeline 105 at the upper end, and then the heat is taken away by the water flow in the liquid pipeline, including realizing the heat exchange of the internal cold and hot gases through thermal radiation.

[0028] 2. For the liquid pipeline 105, one or more can be provided and fixed by the mounting plate 106. The liquid pipeline 105 is distributed around the gas pipeline, including being provided in close contact with the gas pipeline.

[0029] 3. The liquid pipeline 105 can be made of one piece and wrapped around the outside of the gas pipeline to achieve cooling.

[0030] 4. There is one liquid pipeline 105, which is directly set as the outer shell of the base 1, and the interior is filled with cooling water. Then the gas pipeline is placed in the coolant, thereby achieving gas cooling.

[0031] The water cooling method of the base adopts bottom-in and top-out to improve the cooling effect.

[0032] An air inlet 101 is provided at the lower part of the base 1 for connecting to an air supply device, and then the gas is discharged from the air outlet 102 at the top of the base 1. A check valve 2 is vertically arranged on the air outlet 102. The check valve 2 includes a reverse ball 203 inside the shell. The reverse ball 203 relies on gravity and changing air pressure to realize airway opening and closing control.

[0033] The shell of the check valve 2 is arranged up and down to facilitate installation, maintenance and manufacturing. The shell includes an upper shell 201 and a lower shell 202, which are sealed by an O-ring 204. The interior is a cavity structure for accommodating a reverse ball 203. Under the action of gravity, the reverse ball 203 is sealed by fitting the spherical surface with the interior of the airway. The contact surface can be set on a mirror surface, and a sealing ring is also set.

[0034] The device described in the utility model is a sealed structure, which can realize gas extraction. After connecting the gas outlet channel on the check valve 2, the gas extraction operation is realized, the air pressure on the upper part of the reverse ball 203 becomes smaller, and the opening is realized when the air pressure in the connection inside the base is greater than the gravity of the reverse ball 203, and the closing can be realized after the pressure becomes smaller.

[0035] Finally, it should be noted that the device described in the utility model can be applied to exhaust equipment, and can also be used as an implementation structure of a breathing valve for toxic or other extraction and emission control, that is, the air pressure of the air inlet 101 on the connecting base 1 is greater than the weight of the reverse ball 203, so that pressure relief control can be achieved.

Claims

1. A gas path control non-return device, characterized in that: It comprises a base (1) and a check valve (2) connected to an air outlet on the base (1); The base (1) is provided with an air inlet (101) and an air outlet (102); a water cooling structure is provided outside the gas pipeline from the air inlet (101) to the air outlet (102); the water cooling structure comprises a water inlet (103) and a water return port (104) located on the shell; a liquid pipeline (105) is provided between the water inlet (103) and the water return port (104); the liquid pipeline (105) is distributed around the gas pipeline; The check valve (2) comprises a housing and a check ball (203) inside the housing for controlling the opening and closing of the airway.

2. The gas path control non-return device according to claim 1, characterized in that: A liquid collecting chamber (107) is provided at the water inlet (103) and the water return port (104) on the base (1). After the liquid enters the liquid collecting chamber (107), it is divided into a plurality of liquid pipelines (105).

3. The gas path control non-return device according to claim 1, characterized in that: The liquid pipeline (105) on the base (1) is arranged in a spiral shape, wound around the outside of the gas pipeline, and also arranged to fit the outside of the gas pipeline.

4. The gas path control non-return device according to claim 1, characterized in that: The gas pipeline on the base (1) is placed in the liquid pipeline (105).

5. The gas path control non-return device according to claim 1, characterized in that: The gas pipelines communicating between the gas inlet (101) and the gas outlet (102) of the base (1) are arranged in one or more ways, and the more than one gas pipelines converge at the gas inlet (101) and / or the gas outlet (102).

6. The gas path control non-return device according to claim 1, characterized in that: The reverse ball (203) in the check valve (2) closes the airway under the action of gravity, and opens the airway by lifting the reverse ball (203) under the action of gas pressure.

7. The gas path control non-return device according to claim 1, characterized in that: The check valve (2) comprises an upper shell (201) and a lower shell (202), and the connection between the upper shell (201) and the lower shell (202) is sealed by an O-ring (204).

8. The gas path control non-return device according to claim 1, characterized in that: The water inlet (103) and the water return port (104) on the base (1) are arranged in a bottom-in and top-out manner.

9. The gas path control non-return device according to claim 2, characterized in that: A plurality of liquid pipelines (105) are fixed via a mounting plate (106).

10. The gas path control non-return device according to claim 1, characterized in that: The air inlet (101) and the water inlet (103) are provided with one-way valves.

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