Visual indoor and outdoor pressure difference display alarm device

Abstract

The utility model relates to a visual indoor and outdoor pressure difference display alarm device which comprises a mounting seat mounted on a wall of a clean room, a first mounting hole is formed in the mounting seat, a breather pipe body is mounted in the first mounting hole, the breather pipe body is communicated with the inside and the outside of the clean room, and a first pressure sensor is mounted in the breather pipe body. The end, located outside the cleaning chamber, of the mounting base is provided with an indicating lamp, and the end, located in the cleaning chamber, of the mounting base is provided with a control assembly used for controlling on-off of the indicating lamp. By the adoption of the technical scheme, the pressure difference in the clean room is monitored through the control assembly in the using process, so that lamplight of the indicator lamp is controlled to display the corresponding color, and a worker can conveniently judge the pressure difference in the clean room.

Description

Technical Field

[0001] The present application relates to the technical field of indoor and outdoor pressure difference detection, and in particular to a visual indoor and outdoor pressure difference display alarm device. Background Art

[0002] With the development of electronic factories, lithium batteries and biopharmaceuticals, clean rooms are being used more and more. Usually, there must be a certain positive pressure difference between the clean room and the surrounding space. The positive pressure difference required for clean rooms of different grades is also different.

[0003] In existing laboratories, usually one floor of a room may contain several clean rooms, and several clean rooms need to maintain positive or negative pressure continuously. In order to ensure that the pressure difference in each clean room remains in normal use, staff are usually required to conduct real-time observation and detection. The existing detection method is to install a differential pressure gauge outside each clean room. When the pressure difference needs to be detected, the staff needs to go to the door of the clean room and observe the pointer of the differential pressure gauge to determine whether the clean room is under positive pressure.

[0004] However, in actual use, since the pressure difference of each clean room needs to be judged, the staff needs to go to the corresponding pressure difference meter to observe, especially when there are a large number of clean rooms, it takes a lot of time to observe multiple clean rooms, and the observation is more troublesome. Utility Model Content

[0005] In order to solve the problem that it takes a lot of time to manually observe the pressure difference gauge to judge the pressure difference when there are a large number of clean rooms, the present application provides a visual indoor and outdoor pressure difference display alarm device.

[0006] The present application provides a visual indoor and outdoor pressure difference display alarm device, which adopts the following technical solution:

[0007] A visual indoor and outdoor pressure difference display alarm device includes a mounting base installed on the wall of a clean room, a first mounting hole is opened on the mounting base, a ventilation tube body is installed in the first mounting hole, the ventilation tube body is connected with the inside and outside of the clean room, an indicator light is installed on the end of the mounting base located outside the clean room, and a control component for controlling the indicator light switch is installed on the end of the mounting base located inside the clean room.

[0008] By adopting the above technical solution, the pressure difference in the clean room is monitored through the control component during use. When the pressure in the clean room is greater than the pressure outside the clean room, the control indicator light of the control component displays a green light. When the pressure in the clean room is less than or equal to the pressure outside the clean room, the control indicator light of the control component displays a red light. At this time, the staff can quickly judge whether the pressure difference in the clean room meets the experimental needs by observing the color displayed by the indicator light outside the clean room, thereby improving work efficiency and being simple and convenient to use.

[0009] Preferably, the control component includes a proximity sensor arranged on the mounting seat and a trigger sliding in the first mounting hole. The outer wall of one end of the mounting seat located in the clean room is provided with a through hole, the through hole is connected to the first mounting hole, the proximity sensor is installed in the through hole, and the proximity sensor is electrically connected to the indicator light.

[0010] By adopting the above technical solution, the position of the touch piece is detected by the proximity sensor during use, and the light of the indicator light is controlled in real time to display the corresponding color, that is, when the pressure inside the clean room is equal to or less than the pressure outside the clean room, the touch piece is located directly below the proximity sensor, and the proximity sensor detects the existence of the touch piece, and controls the indicator light to display a red light by transmitting an electrical signal. When the pressure inside the clean room is greater than the pressure outside the clean room, the airflow inside the clean room will flow toward the outside of the clean room along the first mounting hole. Driven by the airflow, the touch piece slides in the direction away from the proximity sensor. After the proximity sensor detects that the touch piece has left the initial position, it transmits an electrical signal to control the indicator light to display a green light.

[0011] Preferably, the trigger is a lightweight ball, which rolls in the first mounting hole, the inner wall of the first mounting hole is inclined from outside the clean room to inside the clean room, and the lowest point of the inner wall of the first mounting hole is located inside the clean room, and a blocking block is provided at one end of the mounting seat located inside the clean room to prevent the lightweight ball from slipping out of the first mounting hole, and a vent hole is provided on the blocking block, the aperture of the vent hole is smaller than the aperture of the first mounting hole, and the vent hole is connected to the first mounting hole.

[0012] By adopting the above technical solution, when in use, the touch piece is set as a lightweight ball to reduce the friction between the side wall of the touch piece and the inner wall of the first mounting hole when the touch piece slides, so that the touch piece can more sensitively sense the pressure difference change in the clean room. There is an inclined surface on the inner wall of the first mounting hole to ensure that the lightweight ball always abuts against the blocking block when not affected by external force, thereby blocking the vent hole, and preventing the lightweight ball from sliding out of the first mounting hole under the action of gravity through the blocking block.

[0013] Preferably, a sealing gasket is provided between the blocking block and the end of the mounting seat.

[0014] By adopting the above technical solution, a sealing gasket is provided during use to increase the sealing performance of the connection between the sealing block and the mounting seat.

[0015] Preferably, a first guiding slope is formed at an opening edge of the vent hole close to one end of the mounting seat.

[0016] By adopting the above technical solution, when in use, the lightweight ball rolls to the end of the mounting seat under the influence of its own gravity, and the outer wall of the lightweight ball abuts against the first guide slope, so that the vent hole is blocked by the lightweight ball to prevent external airflow from flowing into the clean room along the first mounting hole.

[0017] Preferably, a second mounting hole is formed at one end of the mounting seat close to the clean room, the second mounting hole is coaxially arranged with the first mounting hole, the second mounting hole is connected to the first mounting hole, and the aperture of the second mounting hole is smaller than the aperture of the first mounting hole.

[0018] By adopting the above technical solution, the lightweight ball is abutted and limited by the end of the second mounting hole during use, thereby preventing the lightweight ball from sliding out of the first mounting hole under the push of airflow in the clean room, thereby avoiding affecting the normal use of the alarm device.

[0019] Preferably, a second guide slope is formed on the edge of the connection between the inner wall of the second mounting hole and the inner wall of the first mounting hole.

[0020] By adopting the above technical solution, when the lightweight ball rolls to abut against the second guide slope during use, the second mounting hole can be blocked by the abutment between the outer wall of the lightweight ball and the second guide slope, thereby reducing the pressure difference change in the clean room.

[0021] Preferably, a transparent indicator plate is fixedly connected to one end of the mounting base located outside the clean room, and the indicator light is arranged toward the transparent indicator plate.

[0022] By adopting the above technical solution, the light color displayed by the indicator light is projected onto the transparent indicator board during use, which makes it convenient for the staff to observe the light display color of the indicator light, thereby facilitating the staff to promptly inspect the clean room whose pressure difference does not meet the experimental requirements.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When in use, the airflow changes in the clean room are used to control the lightweight ball to roll in the first mounting hole. Under the sensing monitoring of the proximity sensor, the light display of the indicator light is controlled in real time, thereby achieving the purpose of monitoring the pressure difference in the clean room. In addition, the staff can judge whether the pressure difference in the clean room meets the experimental requirements by observing the color of the indicator light. It is simple and convenient to use and saves working time.

[0025] 2. When in use, the first guide bevel and the second guide bevel are used to limit the rolling of the lightweight ball. Under the premise of ensuring that the proximity sensor is not affected, the first mounting hole is blocked by the abutment of the lightweight ball and the first guide bevel and the second guide bevel, so as to avoid the connection between the clean room and the outside, thereby avoiding affecting the pressure difference in the clean room;

[0026] 3. When in use, by installing a transparent indicator board outside the clean room, the light color displayed by the indicator light is more conspicuous, making it easier for staff to observe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view mainly showing the overall structure in the embodiment of the present application;

[0028] Figure 2 It is a cross-sectional view mainly showing the structure of the control component in the embodiment of the present application;

[0029] Figure 3 It is a cross-sectional view mainly showing the structure of the ventilation tube body in the embodiment of the present application;

[0030] Figure 4 It is a cross-sectional view mainly showing the structure of the blocking block in the embodiment of the present application.

[0031] Figure numerals: 1. mounting seat; 2. first mounting hole; 3. ventilation tube body; 4. indicator light; 5. control component; 51. proximity sensor; 52. trigger; 521. lightweight ball; 6. through hole; 7. blocking block; 71. ventilation hole; 72. first guide slope; 8. sealing gasket; 9. second mounting hole; 91. second guide slope; 10. transparent indicator plate; 20. wall. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 4 This application is described in further detail.

[0033] The embodiment of the present application discloses a visual indoor and outdoor pressure difference display alarm device.

[0034] Reference Figure 1 A visual indoor and outdoor pressure difference display alarm device comprises a mounting base 1, the mounting base 1 is fixedly connected to the wall of a clean room, one end of the mounting base 1 is located inside the clean room, and the other end is located outside the clean room, a first mounting hole 2 is opened on the mounting base 1, a ventilation pipe body 3 is arranged in the first mounting hole 2, the ventilation pipe body 3 and the mounting base 1 are fixedly connected, the clean room and the outdoors are connected through the ventilation pipe body 3, an indicator light 4 is installed at one end of the mounting base 1, and a control component 5 is installed at the other end, the control component 5 is used to control the display color of the light of the indicator light 4, the indicator light 4 is located outside the clean room, and the control component 5 is located inside the clean room; when in use, the air flow caused by the pressure difference between inside and outside the clean room makes the control component 5 control the light of the indicator light 4 to display the corresponding color.

[0035] Reference Figure 1 and Figure 2The control component 5 includes a proximity sensor 51 and a touch piece 52. A through hole 6 is provided on the mounting base 1, and the through hole 6 is communicated with the first mounting hole 2. The proximity sensor 51 is installed in the through hole 6, and the sensing head of the proximity sensor 51 is arranged toward the first mounting hole 2. The proximity sensor 51 and the indicator light 4 are electrically connected. The touch piece 52 slides in the first mounting hole 2, and the initial position of the touch piece 52 is located below the proximity sensor 51. When in use, due to the pressure difference between the inside and outside of the clean room, the touch piece 52 slides under the driving force of the airflow, so that the proximity sensor 51 monitors the position of the touch piece 52 in real time, and transmits an electrical signal to the indicator light 4, so as to control the light of the indicator light 4 to display the corresponding color, so as to judge whether the pressure difference in the clean room meets the experimental needs by observing the indicator light 4.

[0036] Reference Figure 1 and Figure 2 In order to improve the overall response sensitivity of the device, the trigger 52 is set as a lightweight ball 521. The material of the lightweight ball 521 is preferably a lightweight metal. The lightweight ball 521 is spherical and rolls in the first mounting hole 2. When in use, the weight of the lightweight ball 521 itself is reduced, and the lightweight ball 521 itself is spherical, so as to reduce the friction between the lightweight ball 521 and the inner wall of the first mounting hole 2. As a result, when the pressure difference in the clean room s changes, the lightweight ball 521 is more easily pushed by the airflow, that is, the influence of the friction on the airflow thrust is reduced, so that the overall device detection response is more sensitive.

[0037] Reference Figure 1 and Figure 3 The inner wall of the first mounting hole 2 is inclined from the inside of the clean room to the outside of the clean room, and the lowest point of the inner wall of the first mounting hole 2 is located in the clean room. In this embodiment, the inclination angle of the inner wall of the first mounting hole 2 is preferably set to 1 degree, so as to ensure that when the pressure inside and outside the clean room is consistent, the lightweight ball 521 is always located below the proximity sensor 51 under the influence of its own gravity. At the same time, in order to prevent the lightweight ball 521 from slipping out of the first mounting hole 2, a blocking block 7 is fixed at the end of the mounting seat 1 located in the clean room, and a sealing gasket 8 is provided at the connecting position of the blocking block 7 and the mounting seat 1. The sealing gasket 8 is used to seal the connecting gap between the blocking block 7 and the mounting seat 1.

[0038] Reference Figure 1 and Figure 4The sealing block 7 is disc-shaped as a whole, and a vent hole 71 is opened on the sealing block 7. The vent hole 71 is connected to the first mounting hole 2, and the aperture of the vent hole 71 is smaller than the ball diameter of the lightweight ball 521. A first guide slope 72 is formed at the edge of the opening end of the vent hole 71 facing the lightweight ball 521; when in use, the first mounting hole 2 is blocked by the blocking block 7 to prevent the lightweight ball 521 from sliding out of the first mounting hole 2. When the outer wall of the lightweight ball 521 abuts against the first guide slope 72, the vent hole 71 can be blocked by the lightweight ball 521, thereby preventing the airflow outside the clean room from entering the clean room through the first mounting hole 2, thereby reducing the influence of the airflow outside the clean room on the pressure difference inside the clean room.

[0039] Reference Figure 1 and Figure 3 In order to prevent the lightweight ball 521 from slipping off from the opening of one end of the first mounting hole 2 located outside the clean room, a second mounting hole 9 is integrally formed on the mounting seat 1, the second mounting hole 9 is connected to the first mounting hole 2, the second mounting hole 9 and the first mounting hole 2 are coaxially arranged, and the aperture of the second mounting hole 9 is smaller than the aperture of the first mounting hole 2, and a second guide bevel 91 is formed at the edge of the connection between the inner wall of the second mounting hole 9 and the inner wall of the first mounting hole 2, and the first mounting hole 2, the second mounting hole 9 and the second guide bevel 91 form a funnel-shaped structure as a whole; when in use, the second guide bevel 91 is used to limit the rolling of the lightweight ball 521, and when the lightweight ball 521 rolls to the outer wall of the lightweight ball 521 and abuts against the second guide bevel 91, the second mounting hole 9 is blocked by the lightweight ball 521, so as to prevent the airflow in the clean room from entering the first mounting hole 2 along the vent 71 and flowing to the outside of the clean room along the second mounting hole 9.

[0040] Reference Figure 1 In order to increase the overall ease of use of the device and facilitate the staff to observe the light changes of the indicator light 4, a transparent indicator plate 10 is fixedly connected to the mounting base 1. The transparent indicator plate 10 is located outside the clean room and is arranged perpendicular to the wall of the clean room. The indicator light 4 is arranged toward the transparent indicator plate 10. When in use, the indicator light 4 projects light onto the transparent indicator plate 10, and the staff can judge the pressure difference inside the clean room by observing the light displayed on the transparent indicator plate 10, which makes observation simpler and more convenient.

[0041] The implementation principle of the embodiment of the present application is as follows: when in use, the device is installed on the wall. When the air pressure in the clean room is greater than that outside the clean room, the gas in the clean room enters the first installation hole 2 along the vent hole 71 and pushes the lightweight ball 521 to roll away from the proximity sensor 51. When the proximity sensor 51 cannot detect the lightweight ball 521, the proximity sensor 51 transmits an electrical signal to the indicator light 4, controls the indicator light 4 to display a green light, and projects the green light onto the transparent indicator plate 10. At this time, the lightweight ball 521 blocks the second installation hole 9 under the driving force of the airflow, and starts to slow down the exhaust of the airflow in the clean room. When the indoor air pressure is less than the outdoor air pressure, the air outside the clean room The body passes through the second mounting hole 9 in the ventilation pipe body 3, and pushes the lightweight ball 521 to roll until it abuts against the first guide slope 72, thereby blocking the ventilation hole 71 to prevent the airflow outside the clean room from entering the clean room. At the same time, after the proximity sensor 51 detects the lightweight ball 521, it transmits an electrical signal to the indicator light 4, controls the indicator light 4 to display a red light, and projects the red light onto the transparent indicator plate 10; when the indoor and outdoor pressures are consistent, the lightweight ball 521 rolls along the inner wall of the first mounting hole 2 under the action of its own gravity until it abuts against the blocking block 7. After the proximity sensor 51 detects the lightweight ball 521, it transmits an electrical signal to the indicator light 4, controls the indicator light 4 to display a red light, and projects the red light onto the transparent indicator plate 10.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A visual indoor and outdoor pressure difference display alarm device, characterized in that: The invention comprises a mounting base (1) mounted on a wall of a clean room, wherein the mounting base (1) is provided with a first mounting hole (2), a ventilation pipe body (3) is mounted in the first mounting hole (2), the ventilation pipe body (3) is connected to the inside and outside of the clean room, an indicator light (4) is mounted on one end of the mounting base (1) located outside the clean room, and a control component (5) for controlling the switch of the indicator light (4) is mounted on the other end of the mounting base (1) located inside the clean room.

2. A visual indoor and outdoor pressure difference display alarm device according to claim 1, characterized in that: The control assembly (5) comprises a proximity sensor (51) arranged on the mounting seat (1) and a trigger (52) sliding in the first mounting hole (2); the mounting seat (1) is located in a clean room and has an outer wall at one end thereof provided with a through hole (6); the through hole (6) is connected to the first mounting hole (2); the proximity sensor (51) is mounted in the through hole (6); and the proximity sensor (51) is electrically connected to the indicator light (4).

3. A visual indoor and outdoor pressure difference display alarm device according to claim 2, characterized in that: The trigger (52) is a lightweight ball (521), and the lightweight ball (521) rolls in the first mounting hole (2). The inner wall of the first mounting hole (2) is arranged to be inclined from outside the clean room to inside the clean room, and the lowest point of the inner wall of the first mounting hole (2) is located at one end of the clean room. The mounting seat (1) is provided with a blocking block (7) at one end located in the clean room for preventing the lightweight ball (521) from slipping out of the first mounting hole (2). The blocking block (7) is provided with a vent hole (71), the aperture of the vent hole (71) is smaller than the aperture of the first mounting hole (2), and the vent hole (71) is connected to the first mounting hole (2).

4. A visual indoor and outdoor pressure difference display alarm device according to claim 3, characterized in that: A sealing gasket (8) is provided between the blocking block (7) and the end of the mounting seat (1).

5. The visual indoor and outdoor pressure difference display alarm device according to claim 3, characterized in that: A first guide slope (72) is formed at the opening edge of the vent hole (71) close to one end of the mounting seat (1).

6. The visual indoor and outdoor pressure difference display alarm device according to claim 1, characterized in that: A second mounting hole (9) is formed at one end of the mounting seat (1) close to the outside of the clean room, the second mounting hole (9) is coaxially arranged with the first mounting hole (2), the second mounting hole (9) and the first mounting hole (2) are connected, and the aperture of the second mounting hole (9) is smaller than the aperture of the first mounting hole (2).

7. A visual indoor and outdoor pressure difference display alarm device according to claim 6, characterized in that: A second guide slope (91) is formed at the edge of the connection between the inner wall of the second mounting hole (9) and the inner wall of the first mounting hole (2).

8. The visual indoor and outdoor pressure difference display alarm device according to claim 1, characterized in that: A transparent indicating plate (10) is fixedly connected to one end of the mounting seat (1) located outside the clean room, and the indicating light (4) is arranged toward the transparent indicating plate (10).

Images