CN111256268A - Air pressure adjustable anti-leakage device - Google Patents

Abstract

The invention discloses an air pressure adjustable anti-leakage device, comprising a box body with an air flow channel inside, a mounting plate arranged on the inner wall of the box, and a filter located in the box and sealed with the mounting plate , an air pressure first adjustment component arranged between the filter and the inner wall of the box, and an air pressure second adjustment component arranged between the bottom of the filter and the bottom end of the box; the air pressure first The adjustment component is connected with the induction control component; its structure is reliable and the adjustment is convenient. Through the cooperation of the air pressure adjustment component and the induction control component, the air pressure state in the air pressure adjustment cavity is ensured, so as to ensure that the air supply must pass through the filter before being sent to the room or Outdoors, improve the cleanliness of the air entering the room or outside.

Description

Air pressure adjustable anti-leakage device

technical field

The invention relates to the technical field of gas leakage prevention, in particular to an air pressure adjustable leakage prevention device.

Background technique

In daily life or production, for some places with serious requirements for indoor and outdoor gas pressure, such as workshops, operating rooms, etc., air supply devices or other equipment are usually used to adjust the air pressure to ensure the production environment. For example, for some patients with infectious diseases, it is necessary to ensure that the operating room is in a negative pressure state during surgery, so as to clean the operating room and avoid the spread of viruses. Usually, measures such as adding an exhaust fan are used to adjust the exhaust air volume and make the operating room clean. From positive pressure to negative pressure. However, the existing air supply mechanism has large air leakage, which cannot reliably adjust and ensure a reasonable air pressure in the room, and during the operation of the air supply mechanism, the air sent out through the air supply mechanism is in a diffused state and is prone to turbulence, which cannot effectively Reliable adjustment of the air pressure is achieved, and the use performance is poor.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an air pressure adjustable anti-leakage device to solve the problem that the existing air supply mechanism cannot reliably adjust the indoor or outdoor air pressure.

The technical solution of the present invention to solve the above technical problems is as follows: an air pressure adjustable anti-leakage device, comprising a box body with an air flow channel inside, a mounting plate arranged on the inner wall of the box, a mounting plate located in the box and connected to the mounting plate a filter connected in a sealed connection, a first air pressure adjustment component disposed between the filter and the inner wall of the box, and a second air pressure adjustment component disposed between the lower part of the filter and the bottom end of the box; The air pressure first regulating component is communicatively connected with an induction control component;

A first air pressure adjustment cavity is formed between the filter, the mounting plate and the inner wall of the box, the air pressure first adjustment component is connected with the air pressure first adjustment cavity; the filter and the air pressure second adjustment component A second air pressure adjustment chamber is formed therebetween, and the air pressure second adjustment chamber is communicated with the air pressure first adjustment chamber through a filter.

Further, the air pressure first regulating assembly includes a regulating tube communicated with the air pressure first regulating chamber and a control valve disposed on the regulating tube, the control valve is connected in communication with the sensing control component, and the regulating The end of the tube away from the air pressure first regulating chamber extends outside the box.

Further, the second air pressure adjustment component includes an adjustment plate located below the filter and arranged along the circumference of the box body, and air flow holes evenly distributed on the adjustment plate, and the air flow holes are connected to the air pressure. The second regulating cavity is communicated with each other.

Further, the induction control assembly includes an air pressure sensor disposed in the box and a controller connected in communication with the air pressure sensor, and the controller is also connected in communication with the control valve.

Further, the end of the adjusting pipe away from the first air pressure adjusting chamber extends to the outside of the box and is connected with an air pipe.

Further, the top of the box body is provided with a joint communicating with the inside of the box body.

Further, the control valve adopts a damping solenoid valve.

Further, a gasket is provided between the mounting plate and the filter.

The present invention has the following beneficial effects: the air pressure adjustable anti-leakage device provided by the present invention has reliable structure and convenient adjustment. The air pressure sensor in the induction control assembly senses the size of the indoor air pressure, and then transmits the induction signal to the controller , through the analysis of the controller and issuing corresponding commands to control the opening and closing of the valve or the size of the valve conduction, so as to achieve reliable control of the indoor air pressure and ensure that the indoor air pressure is always maintained in a positive or negative pressure state. The control process is automatic and operation. Convenient and reliable adjustment; through the cooperation of the air pressure adjustment component and the induction control component, the air pressure state in the air pressure adjustment chamber is ensured, so as to ensure that the supply air must pass through the filter before being sent to the indoor or outdoor, and improve the cleanliness of the air entering the indoor or outdoor Through the setting of the adjusting plate and the air flow hole, the uniformity of the air flow is ensured, the reasonable reliability of the air pressure adjustment is improved, and the disturbance of the air flow and the influence of the air pressure adjustment are avoided.

Description of drawings

1 is a schematic diagram of the structure of the device when it is in a negative pressure state in the present invention;

2 is a schematic diagram of the structure of the device when it is in a positive pressure state in the present invention;

The reference numerals shown in Fig. 1 to Fig. 2 are respectively indicated as: 1-air flow channel, 2-box, 3-installation plate, 4-filter, 5-first regulating component, 6-air pressure second regulating component, 7- Air pressure first adjusting chamber, 8- Air pressure second adjusting chamber, 50- Adjusting pipe, 51- Control valve, 60- Adjusting plate, 61- Air flow hole, 9- Air pipe, 10- Joint, 11- Gasket.

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention.

As shown in Fig. 1 to Fig. 2, the air pressure adjustable anti-leakage device includes a box body 2 with an air flow channel 1 inside, a mounting plate 3 arranged on the inner wall of the box body 2, a mounting plate 3 located in the box body 2 and connected to the mounting plate 3. The air-tightly connected filter 4, the air pressure first regulating component 5 arranged between the filter 4 and the inner wall of the box body 2, and the air pressure second regulating component 6 arranged between the lower part of the filter 4 and the bottom end of the box body 2; The air pressure first regulating component 5 is communicatively connected with the induction control component.

The upper end of the box body 2 has an interface that communicates with the air flow channel 1 inside the box body 2, and is used for connecting external pipes to realize indoor or outdoor air supply. The mounting plate 3 provides a firm and reliable support for the filter 4 to ensure the reliable installation of the filter 4 . The filter 4 adopts a high-efficiency filter, which is mainly used to capture particulate dust above 0.5um and various suspended solids, and has the characteristics of high filtration efficiency, low resistance, and large dust holding capacity. The air pressure first adjustment component 5 and the air pressure second adjustment component 6 are used to reliably adjust the air pressure, and the working state of the air pressure first adjustment component 5 is controlled by the induction control component, so as to ensure that the indoor or indoor is in a negative pressure or positive pressure state, and the whole process Automatic control, reliable and convenient.

A first air pressure adjustment chamber 7 is formed between the filter 4, the mounting plate 3 and the inner wall of the box body 2, and the air pressure first adjustment component 5 is connected with the air pressure first adjustment chamber 7; between the filter 4 and the air pressure second adjustment component 6 A second air pressure adjustment chamber 8 is formed, and the second air pressure adjustment chamber 8 communicates with the air pressure first adjustment chamber 7 through the filter 4 . The device can work in two different modes, namely negative pressure working mode and positive pressure working mode. Negative pressure working mode: When the system is in the air supply mode, the air supply is purified by the filter 4 and then enters the second air pressure adjustment chamber 8, and then the air is sent to the room through the air flow hole 61 after equalizing. In this process, the air pressure first adjustment chamber 7 Under normal pressure or negative pressure, since the inside of the box body 2 and the second air pressure adjustment chamber 8 are positive pressure, the unpurified air will not leak into the room through the gasket 11 due to the pressure difference, so as to ensure unpurified treatment. The air does not enter the interior of the room. Positive pressure working mode: when the system is in the exhaust mode, the exhaust air enters the second air pressure adjustment chamber 8 through the airflow hole 61, and then the air is purified by the filter 4 and then discharged into the room. During this process, the air pressure first adjustment chamber 7 is at normal pressure or In the positive pressure state, since the inside of the box body 2 and the second air pressure adjustment chamber 8 are negative pressure, the unpurified air will not leak into the box body 2 through the sealing gasket 11 due to the pressure difference, so as to ensure the unpurified air Will not be discharged outdoors.

The air pressure first regulating assembly 5 includes a regulating tube 50 communicating with the air pressure first regulating chamber 7 and a control valve 51 arranged on the regulating tube 50. The control valve 51 is connected in communication with the sensing control assembly, and the regulating tube 50 The end away from the air pressure first regulating cavity 7 extends to the outside of the box body 2 . The control valve 51 adopts a damping solenoid valve, and the on-off or opening and closing of the regulating pipe 50 is controlled by the control valve 51, so as to adjust the amount of gas discharged into the air pressure first regulating chamber 7, and realize the positive pressure in the air pressure first regulating chamber 7. Adjustment of pressure or negative pressure state.

The air pressure second adjustment component 6 includes an adjustment plate 60 located under the filter 4 and arranged along the circumferential direction of the box body 2 , and air flow holes 61 evenly distributed on the adjustment plate 60 , and the air flow holes 61 are connected to the air pressure second adjustment cavity 8 . connected. The adjusting plate 60 is arranged on the inner wall of the box body 2, and the air flow hole 61 ensures the uniformity of the air flow and avoids the poor pressure regulation effect caused by the turbulent gas flow.

The induction control assembly includes an air pressure sensor disposed in the box body 2 and a controller connected in communication with the air pressure sensor, and the controller is also connected in communication with the control valve 51 . The controller adopts the single chip microcomputer whose model is STM. According to the needs of use, the air pressure value is predetermined by the controller, and the control valve 51 on the regulating pipe 50 is controlled. When the air pressure sensor detects that the air pressure value is greater than or less than the predetermined value in the controller, the detection signal is transmitted to the controller, through The analysis of the controller sends out corresponding commands to the control valve 51, so as to control the opening and closing state or the conduction size of the control valve 51, so that the actual air pressure value reaches the predetermined air pressure value.

In order to avoid air leakage between the filter 4 and the installation plate 3 resulting in poor air pressure adjustment effect, in the present invention, a gasket 11 is provided between the installation plate 3 and the filter 4 .

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (8)

1. The air pressure adjustable anti-leakage device is characterized by comprising a box body (2) with an air flow channel (1) inside, a mounting plate (3) arranged on the inner wall of the box body (2), a filter (4) which is positioned in the box body (2) and is in sealing connection with the mounting plate (3), an air pressure first adjusting component (5) arranged between the filter (4) and the inner wall of the box body (2) and an air pressure second adjusting component (6) arranged between the lower part of the filter (4) and the bottom end of the box body (2); the air pressure first adjusting assembly (5) is in communication connection with an induction control assembly;

a first air pressure adjusting cavity (7) is formed among the filter (4), the mounting plate (3) and the inner wall of the box body (2), and the first air pressure adjusting component (5) is connected with the first air pressure adjusting cavity (7); an air pressure second adjusting cavity (8) is formed between the filter (4) and the air pressure second adjusting assembly (6), and the air pressure second adjusting cavity (8) is communicated with the air pressure first adjusting cavity (7) through the filter (4).

2. Leakage prevention apparatus with adjustable air pressure according to claim 1, characterized in that the first air pressure adjusting assembly (5) comprises an adjusting pipe (50) communicating with the first air pressure adjusting chamber (7) and a control valve (51) disposed on the adjusting pipe (50), the control valve (51) is in communication connection with the sensing control assembly, and the end of the adjusting pipe (50) away from the first air pressure adjusting chamber (7) extends out of the tank (2).

3. Leakage prevention apparatus with adjustable air pressure according to claim 1, characterized in that said second air pressure adjusting assembly (6) comprises an adjusting plate (60) located under said filter (4) and arranged along the circumference of said box (2) and air flow holes (61) uniformly distributed on said adjusting plate (60), and said air flow holes (61) are communicated with said second air pressure adjusting chamber (8).

4. Leak-proof apparatus adjustable with respect to gas pressure, according to claim 2, characterised in that the inductive control assembly comprises a gas pressure sensor arranged inside the tank (2) and a controller in communication connection with the gas pressure sensor, and in communication connection with the control valve (51).

5. Leakage prevention device with adjustable air pressure according to claim 1, characterized in that the end of the adjusting tube (50) remote from the first adjusting chamber (7) of air pressure extends outside the tank (2) and is connected with an air duct (9).

6. Leak-proof means adjustable in terms of air pressure according to any one of claims 1 to 5, characterised in that the tank (2) is provided at its top end with a joint (10) communicating with the inside of the tank (2).

7. Leak-proof means adjustable with respect to gas pressure, according to claim 6, characterised in that the control valve (51) is a damped solenoid valve.

8. Leak-proof means adjustable with respect to gas pressure, according to claim 6, characterised in that a sealing gasket (11) is arranged between the mounting plate (3) and the filter (4).

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