Anti-clogging air filter device

Abstract

The utility model provides an anti -blocking air filter device, including air inlet channel, air inlet channel one end is air inlet, and the other end is air outlet, air inlet channel inside along the air inlet direction has installed first filter screen, second filter screen in proper order, air inlet channel side wall has opened the air supplement mouth, is arranged with third filter screen in air supplement mouth, and the air supplement mouth upper end is hinged with anti -blocking cover plate, the utility model provides an anti -blocking air filter device can compensate the air inlet volume after filter screen is blocked.

Description

Technical Field

[0001] This utility model relates to the field of SVG chamber cooling and filtration devices, and in particular to an anti-clogging air filtration device. Background Technology

[0002] The SVG chamber is air-cooled. To dissipate heat from the SVG modules, air inlets and outlets are installed on the walls of the chamber. A blower is installed at the air inlet, blowing air into the SVG chamber. An exhaust fan is installed at the air outlet, drawing air from the SVG chamber to the outside. The exhaust volume inside the SVG chamber is slightly greater than the intake volume, resulting in a certain negative pressure under normal conditions. Due to this negative pressure difference, air carrying dust and moisture is drawn into the SVG chamber and into the SVG modules through the air inlet. This mixture of moisture and dust forms a layer of sludge that adheres to the circuit boards of the SVG modules over time. If not cleaned regularly, this leads to corrosion and aging of the boards, poor heat dissipation, malfunctions, and damage, seriously threatening the safe and stable operation of the SVG device. Furthermore, the fire alarm system inside the SVG chamber frequently experiences false alarms due to dust accumulation.

[0003] To prevent dust from entering, an air filtration device is currently installed. However, the existing air filtration device has a drawback: because the filter screen filters dust, the dust stays on the filter screen and easily clogs the filter screen after a long time. When the filter screen is clogged, the air intake of the SVG room is insufficient, resulting in poor heat dissipation of the SVG module and easy failure. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an anti-clogging air filter device, which adds an anti-clogging function to the existing air filter device, so as to compensate for the air intake after clogging, remind maintenance personnel to clean the clogged filter in time, and reduce the failure rate of SVG module.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An anti-clogging air filtration device includes an air inlet channel, one end of which is an air inlet and the other end is an air outlet; a first filter screen and a second filter screen are installed sequentially in the air inlet channel along the air inlet direction; an air supply port is opened on the side wall of the air inlet channel, a third filter screen is arranged in the air supply port, and an anti-clogging cover plate is hinged to the upper end of the air supply port.

[0006] The air intake channel includes a frame, and side plates can be detachably installed on the outer side of the frame at the front, back, top, and bottom. A first mounting groove and a second mounting groove are arranged sequentially along the length of the frame. The first filter screen slides into the first mounting groove and is fixed by the side plate. The second filter screen slides into the second mounting groove and is fixed by the side plate.

[0007] Both the first mounting slot and the second mounting slot are U-shaped slots.

[0008] The anti-clogging cover plate is connected to the air inlet channel via a spring at the other end away from the hinge point.

[0009] A limit switch is provided on the outside of the air inlet, directly opposite the anti-clogging cover.

[0010] The air inlet channel is equipped with telescopic support legs on one side of the air outlet.

[0011] The telescopic outrigger includes a fixed sleeve, which is welded to the frame. A movable sleeve is slidably fitted inside the fixed sleeve. A fixed knob is threadedly connected to the fixed sleeve in the radial direction and tightens the movable sleeve.

[0012] The first filter screen is a G4 pre-filter.

[0013] The second filter screen uses an F7 medium-efficiency filter screen.

[0014] The third filter screen is a G4 pre-filter.

[0015] This utility model provides an anti-clogging air filter device, which has the following technical effects: 1) By setting up an air inlet, a third filter, and an anti-clogging cover, the anti-clogging cover can be opened under pressure difference when the first and second filters are clogged, effectively meeting the ventilation and cooling needs of the SVG module when the filters are clogged.

[0016] 2) By setting a position sensor, such as a limit switch or proximity switch, after the position sensor detects the anti-clogging cover opening signal, it will send an alarm signal to the monitoring backend to remind the operation and maintenance personnel that the device is blocked. This will allow for timely cleaning of the filter and reduce the probability of SVG module overheating failure due to insufficient ventilation.

[0017] 3) By setting a first mounting slot and a second mounting slot within the frame, both of which are arranged in pairs, one above the other, the first and second filters can be slidably installed. One end is limited by the frame itself, and the other end is limited by the side plate after installation. When the filters need to be removed later, simply remove one side plate and slide out the first and second filters, which is simple and convenient. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the present invention (first perspective).

[0019] Figure 2 This is a schematic diagram of the structure of the present invention (second perspective).

[0020] Figure 3This is a cross-sectional view of the present invention (the filter is not clogged).

[0021] Figure 4 This is a cross-sectional view of the present invention (filter clogging).

[0022] Figure 5 This is a schematic diagram of the structure of the second filter screen in this utility model (first perspective).

[0023] Figure 6 This is a schematic diagram of the structure of the second filter screen in this utility model (second perspective).

[0024] Figure 7 This is a schematic diagram of the structure of the first filter screen in this utility model.

[0025] Figure 8 This is a schematic diagram of the frame structure in this utility model.

[0026] In the diagram: Frame 1, Hinge 2, First filter 3, Anti-clogging cover 4, Spring 5, Second filter 6, Third filter 7, Position sensor 8, Telescopic leg 9, Fixing knob 10, First mounting slot 1.1, Second mounting slot 1.2, Side plate 1.3, Air inlet 1.4, Air outlet 1.5, Air replenishment port 1.6, Side wall a. Detailed Implementation like Figure 1-4 , Figure 8 As shown, an anti-clogging air filter device includes a frame 1. A first mounting groove 1.1 and a second mounting groove 1.2 are arranged sequentially in the frame 1 along the air inlet direction. Side plates 1.3 are detachably installed on the front, back, top, and bottom of the frame 1 by bolts, so that the front, back, top, and bottom of the frame 1 are blocked. The left and right openings of the frame 1 are an air inlet 1.4 at one end and an air outlet 1.5 at the other end.

[0027] like Figure 3-4 As shown, a first filter screen 3 is installed in the first mounting slot 1.1, and a second filter screen 6 is installed in the second mounting slot 1.2. The first filter screen 3 and the second filter screen 6 can perform two-stage filtration (coarse filtration + fine filtration) on the incoming air.

[0028] The first filter screen 3 uses a G4 pre-filter, and the second filter screen 6 uses an F7 medium-efficiency filter.

[0029] In addition, an air inlet 1.6 is provided above the frame 1. An anti-clogging mechanism is installed at the air inlet 1.6. The anti-clogging mechanism includes an anti-clogging cover plate 4. One side of the anti-clogging cover plate 4 is hinged to the side plate of the air inlet 1.6 via a hinge 2 and can be flipped outward relative to the air inlet 1.6 of the frame 1.

[0030] The anti-clogging cover 4 is connected to the frame 1 at the other end, away from the hinge point, via springs 5. Under normal conditions, the anti-clogging cover 4 is tightly closed at the air inlet 1.6 by its own weight and the clamping force of the springs 5. When the air pressure inside the frame 1 becomes too high, the anti-clogging cover 4 will be pushed open.

[0031] Preferably, a third filter 7 is installed inside the air inlet 1.6. The third filter 7 is a G4 primary filter. The third filter 7 can filter the incoming air.

[0032] Preferably, a position sensor 8 is provided on the outer side of the air inlet 1.6, directly opposite the anti-clogging cover 4. The position sensor 8 can be a proximity switch (non-contact type), and the proximity switch model is Schneider XS6C12A1PAM12. When the anti-clogging cover 4 is opened, its position change causes the proximity switch to change its sensing state, thereby outputting a trigger signal.

[0033] like Figure 2 As shown, preferably, a telescopic support leg 9 is arranged on one side of the air outlet 1.5 of the frame 1. The telescopic support leg 9 includes a fixed sleeve 9.1, which is welded to the frame 1. A movable sleeve 9.2 is slidably sleeved inside the fixed sleeve 9.1. Multiple fixed knobs 10 are arranged along the length of the fixed sleeve 9.1. The fixed knobs 10 are threadedly connected to the fixed sleeve 9.1 radially and tighten the movable sleeve 9.2. The telescopic support leg 9 supports one end of the device as needed.

[0034] Working principle and process: 1) such as Figure 3-4 As shown, this device is installed at the air inlet of the SVG chamber. With side wall a as the boundary, the left side is the external environment, and the right side is the SVG chamber. The blower on the left blows air towards the air inlet 1.4. The air undergoes coarse filtration through the first filter 3 and fine filtration through the second filter 6. The filtered air then enters the SVG chamber. The filtered air contains significantly fewer dust particles, effectively solving the problems of SVG module malfunctions and false smoke alarms caused by dust. Under normal conditions, the anti-clogging cover 4 will be tightly closed onto the air supply port 1.6 by the preload force of the spring 5.

[0035] 2) When the first filter 3 and the second filter 6 become clogged, the air intake of the SVG chamber decreases significantly, while the air output remains constant, resulting in a growing negative pressure difference between the inside and outside of the SVG chamber. When the pressure difference reaches a certain value, the anti-clogging cover 4 opens upwards due to the pressure difference between its upper and lower sections, allowing a large amount of air to enter the SVG chamber through the third filter 7 at the air inlet 1.6 to compensate for the air intake. A small amount of air enters the SVG chamber through the partially clogged first filter 3 and second filter 6.

[0036] Meanwhile, when the anti-clogging cover 4 is opened, the position sensor 8 is triggered. The position sensor 8 converts the position change into an electrical signal and sends it to the PLC controller. The PLC controller feeds back the alarm signal to the monitoring background through the industrial network and triggers an audible and visual alarm to remind the operation and maintenance personnel that the device is blocked and to clean the filter in time.

Claims

1. An anti-clogging air filter device, characterized in that: It includes an air inlet channel, with an air inlet (1.4) at one end and an air outlet (1.5) at the other end; a first filter (3) and a second filter (6) are installed in the air inlet channel along the air inlet direction; an air supply port (1.6) is opened on the side wall of the air inlet channel, and a third filter (7) is arranged in the air supply port (1.6); an anti-clogging cover plate (4) is hinged to the upper end of the air supply port (1.6).

2. The anti-clogging air filter device according to claim 1, characterized in that: The air intake channel includes a frame (1), and side plates (1.3) are detachably installed on the outer side of the frame (1) in all directions. A first mounting groove (1.1) and a second mounting groove (1.2) are arranged sequentially along the length of the frame (1). The first filter screen (3) slides into the first mounting groove (1.1) and is fixed by the side plate (1.3). The second filter screen (6) slides into the second mounting groove (1.2) and is fixed by the side plate (1.3).

3. The anti-clogging air filter device according to claim 2, characterized in that: Both the first mounting slot (1.1) and the second mounting slot (1.2) are U-shaped slots.

4. The anti-clogging air filter device according to claim 1, characterized in that: The anti-clogging cover (4) is connected to the air inlet channel at the other end away from the hinge point via a spring (5).

5. The anti-clogging air filter device according to claim 1, characterized in that: A limit switch (8) is provided on the outside of the air inlet (1.6) and directly opposite the anti-clogging cover plate (4).

6. The anti-clogging air filter device according to claim 1, characterized in that: The air inlet channel is provided with telescopic outriggers (9) on one side of the air outlet (1.5).

7. The anti-clogging air filter device according to claim 6, characterized in that: The telescopic outrigger (9) includes a fixed sleeve (9.1), which is welded to the frame (1). A movable sleeve (9.2) is slidably sleeved inside the fixed sleeve (9.1). A fixed knob (10) is threadedly connected to the fixed sleeve (9.1) in the radial direction and presses against the movable sleeve (9.2).

8. The anti-clogging air filter device according to claim 1, characterized in that: The first filter screen (3) is a G4 primary filter screen.

9. The anti-clogging air filter device according to claim 1, characterized in that: The second filter (6) is an F7 medium-efficiency filter.

10. The anti-clogging air filter device according to claim 1, characterized in that: The third filter (7) is a G4 primary filter.

Images