Air pressure adjustable anti-leakage device

Abstract

The present 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 body, a filter located in the box body and sealed with the mounting plate, a first air pressure regulating component arranged between the filter and the inner wall of the box body, and a second air pressure regulating component arranged between the bottom of the filter and the bottom end of the box body; the first air pressure regulating component is communicatively connected with a sensing control component; the structure is reliable and the adjustment is convenient, and the air pressure state in the air pressure regulating chamber is guaranteed through the cooperation of the air pressure regulating component and the sensing control component, thereby ensuring that the air supply must pass through the filter before being delivered to the indoor or outdoor areas, thereby improving the cleanliness of the air entering the indoor or outdoor areas.

Description

Technical Field

[0001] The invention relates to the technical field of gas leakage prevention, and in particular to a gas pressure adjustable leakage prevention device. Background Art

[0002] In daily life or production, for some places that have strict requirements on 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 exhaust fans are taken to adjust the exhaust volume so that the clean operating room changes from positive pressure to negative pressure. However, the existing air supply mechanism has large air leakage and cannot achieve reliable regulation and ensure reasonable indoor air pressure. In addition, during the operation of the air supply mechanism, the air delivered by the air supply mechanism is in a scattered state and is prone to turbulence, and cannot effectively achieve reliable regulation of air pressure, resulting in poor performance. Summary of the invention

[0003] The object 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.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: an air pressure adjustable anti-leakage device comprises a box body with an air flow channel inside, a mounting plate arranged on the inner wall of the box body, a filter located in the box body and sealedly connected to the mounting plate, a first air pressure regulating component arranged between the filter and the inner wall of the box body, and a second air pressure regulating component arranged between the bottom of the filter and the bottom end of the box body; the first air pressure regulating component is communicatively connected with a sensing control component;

[0005] A first air pressure regulating chamber is formed between the filter, the mounting plate and the inner wall of the box body, and the first air pressure regulating component is connected to the first air pressure regulating chamber; a second air pressure regulating chamber is formed between the filter and the second air pressure regulating component, and the second air pressure regulating chamber is connected to the first air pressure regulating chamber through the filter.

[0006] Furthermore, the first air pressure regulating component includes a regulating tube connected to the first air pressure regulating chamber and a control valve arranged on the regulating tube, the control valve is communicatively connected to the sensing control component, and the regulating tube extends outside the box body away from the end of the first air pressure regulating chamber.

[0007] Furthermore, the second air pressure regulating component includes an regulating plate located below the filter and arranged along the circumference of the box body, and air flow holes evenly distributed on the regulating plate, and the air flow holes are connected to the second air pressure regulating chamber.

[0008] Furthermore, the induction control component includes an air pressure sensor disposed in the box body and a controller communicatively connected to the air pressure sensor, and the controller is also communicatively connected to the control valve.

[0009] Furthermore, the end of the regulating tube away from the first air pressure regulating chamber extends to the outside of the box and is connected to an air duct.

[0010] Furthermore, a joint communicating with the interior of the box is provided at the top of the box.

[0011] Furthermore, the control valve is a damping solenoid valve.

[0012] Furthermore, a sealing gasket is provided between the mounting plate and the filter.

[0013] The present invention has the following beneficial effects: the air pressure adjustable anti-leakage device provided by the present invention has a reliable structure and is convenient to adjust. The air pressure in the room is sensed by the air pressure sensor in the sensing control component, and the sensing signal is then transmitted to the controller. The controller analyzes and issues corresponding instructions to control the opening and closing of the valve or the size of the valve conduction, thereby realizing reliable control of the indoor air pressure and ensuring that the indoor air pressure always remains in a positive or negative pressure state. The control process is automated, convenient to operate, and reliable to adjust. The air pressure state in the air pressure regulating chamber is ensured through the cooperation of the air pressure regulating component and the sensing control component, thereby ensuring that the air supply must pass through the filter before being delivered to the indoor or outdoor environment, thereby improving the cleanliness of the air entering the indoor or outdoor environment. The uniformity of the air flow is ensured through the setting of the adjusting plate and the air flow hole, thereby improving the reasonable reliability of the air pressure regulation and avoiding the air pressure regulation affected by air flow turbulence. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the device in the present invention when it is in a negative pressure state;

[0015] Figure 2 It is a schematic diagram of the structure of the device in the present invention when it is in a positive pressure state;

[0016] Figure 1 to Figure 2 The reference numerals shown in the figure represent respectively: 1-air flow channel, 2-box, 3-mounting plate, 4-filter, 5-first regulating component, 6-second air pressure regulating component, 7-first air pressure regulating chamber, 8-second air pressure regulating chamber, 50-regulating pipe, 51-control valve, 60-adjusting plate, 61-air flow hole, 10-connector, 11-sealing gasket. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0018] like Figure 1 to Figure 2 As shown, 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 filter 4 located in the box body 2 and sealed with the mounting plate 3, a first air pressure regulating component 5 arranged between the filter 4 and the inner wall of the box body 2, and a second air pressure regulating component 6 arranged between the bottom of the filter 4 and the bottom end of the box body 2; the first air pressure regulating component 5 is communicatively connected with an induction control component.

[0019] The upper end of the box body 2 has an interface connected to the air flow channel 1 inside the box body 2, which is used to connect the external pipeline to realize indoor or outdoor air supply. The mounting plate 3 provides a stable 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 dust particles larger than 0.5um and various suspended matter, and has the characteristics of high filtration efficiency, low resistance, and large dust holding capacity. The first air pressure regulating component 5 and the second air pressure regulating component 6 are used to reliably regulate the air pressure. The working state of the first air pressure regulating component 5 is controlled by the induction control component, thereby ensuring that the indoor or indoor is in a negative pressure or positive pressure state, and the whole process is automated and controlled, which is reliable and convenient.

[0020] A first air pressure regulating chamber 7 is formed between the filter 4, the mounting plate 3 and the inner wall of the box body 2, and the first air pressure regulating assembly 5 is connected to the first air pressure regulating chamber 7; a second air pressure regulating chamber 8 is formed between the filter 4 and the second air pressure regulating assembly 6, and the second air pressure regulating chamber 8 is connected to the first air pressure regulating chamber 7 through the filter 4. The present device can realize operation in two different modes, namely, a negative pressure working mode and a positive pressure working mode. Negative pressure working mode: When the system is in air supply mode, the air supply enters the second air pressure regulating chamber 8 after being purified by the filter 4, and then the air flow is sent into the room after being uniformly flowed through the air flow hole 61. During this process, the first air pressure regulating chamber 7 is in a normal pressure or negative pressure state. Since the box body 2 and the second air pressure regulating chamber 8 are positive pressure, the unpurified air will not leak into the room through the sealing pad 11 due to the pressure difference, thereby ensuring that the unpurified air will not enter the room. Positive pressure working mode: When the system is in exhaust mode, the exhaust air enters the second air pressure regulating chamber 8 through the air flow hole 61, and then the air flow is purified by the filter 4 and discharged from the room. During this process, the first air pressure regulating chamber 7 is in a normal pressure or positive pressure state. Since the inside of the box 2 and the second air pressure regulating chamber 8 are at negative pressure, the unpurified air will not leak into the box 2 through the sealing gasket 11 due to the pressure difference, thereby ensuring that the unpurified air will not be discharged to the outside.

[0021] The first air pressure regulating assembly 5 includes a regulating pipe 50 connected to the first air pressure regulating chamber 7 and a control valve 51 arranged on the regulating pipe 50. The control valve 51 is in communication with the induction control assembly, and the end of the regulating pipe 50 away from the first air pressure regulating chamber 7 extends to the outside of the box 2. The control valve 51 adopts a damping solenoid valve, and the on-off or opening and closing size of the regulating pipe 50 is controlled by the control valve 51, so as to adjust the amount of gas discharged in the first air pressure regulating chamber 7, and realize the regulation of the positive pressure or negative pressure state in the first air pressure regulating chamber 7.

[0022] The second air pressure regulating assembly 6 includes an regulating plate 60 located below the filter 4 and arranged along the circumference of the box body 2, and air flow holes 61 evenly distributed on the regulating plate 60, and the air flow holes 61 are connected to the second air pressure regulating chamber 8. The regulating plate 60 is arranged on the inner wall of the box body 2, and the air flow holes 61 ensure the uniformity of the air flow, avoiding the poor pressure regulating effect caused by gas turbulence.

[0023] The induction control component includes an air pressure sensor arranged in the box 2 and a controller connected to the air pressure sensor, and the controller is also connected to the control valve 51. The controller adopts a single chip microcomputer of model STM. According to the use needs, the air pressure value is preset by the controller, and the control valve 51 on the regulating tube 50 is controlled. When the air pressure sensor detects that the air pressure value is greater than or less than the preset value in the controller, the detection signal is transmitted to the controller, and the corresponding command is issued to the control valve 51 through the analysis of the controller, 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 preset air pressure value.

[0024] In order to avoid air leakage between the filter 4 and the mounting plate 3 and thus prevent poor air pressure regulation effect, in the present invention, a sealing gasket 11 is provided between the mounting plate 3 and the filter 4 .

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The air pressure adjustable anti-leakage device is characterized by: The invention comprises a box (2) having an air flow passage (1) therein, a mounting plate (3) arranged on the inner wall of the box (2), a filter (4) located in the box (2) and sealedly connected to the mounting plate (3), a first air pressure regulating component (5) arranged between the filter (4) and the inner wall of the box (2), and a second air pressure regulating component (6) arranged between the bottom of the filter (4) and the bottom end of the box (2); the first air pressure regulating component (5) is communicatively connected to a sensing control component; A first air pressure regulating chamber (7) is formed between the filter (4), the mounting plate (3) and the inner wall of the box body (2), and the first air pressure regulating component (5) is connected to the first air pressure regulating chamber (7); a second air pressure regulating chamber (8) is formed between the filter (4) and the second air pressure regulating component (6), and the second air pressure regulating chamber (8) is connected to the first air pressure regulating chamber (7) through the filter (4); The first air pressure regulating component (5) comprises a regulating tube (50) in communication with the first air pressure regulating chamber (7) and a control valve (51) arranged on the regulating tube (50), the control valve (51) being in communication connection with the induction control component, and the end of the regulating tube (50) away from the first air pressure regulating chamber (7) extending to the outside of the box body (2); The second air pressure regulating assembly (6) comprises an regulating plate (60) located below the filter (4) and arranged along the circumference of the box body (2), and air flow holes (61) evenly distributed on the regulating plate (60), and the air flow holes (61) are connected to the second air pressure regulating chamber (8).

2. The air pressure adjustable anti-leakage device according to claim 1, characterized in that: The induction control component comprises an air pressure sensor arranged in the box (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).

3. The air pressure adjustable anti-leakage device according to claim 1, characterized in that: The end of the regulating tube (50) away from the first air pressure regulating chamber (7) extends to the outside of the box body (2) and is connected to an air duct.

4. The air pressure adjustable anti-leakage device according to any one of claims 1 to 3, characterized in that: The top end of the box body (2) is provided with a joint (10) which is in communication with the interior of the box body (2).

5. The air pressure adjustable anti-leakage device according to claim 1, characterized in that: The control valve (51) is a damping solenoid valve.

6. The air pressure adjustable anti-leakage device according to claim 5, characterized in that: A sealing gasket (11) is provided between the mounting plate (3) and the filter (4).

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