Multifunctional platform screen door for metro

Abstract

The invention discloses a metro multifunctional shielding door, and relates to the field of metro facilities, the metro multifunctional shielding door comprises two symmetrical fixed doors, sliding doors are slidably connected to the two fixed doors, two symmetrical driving wheels are rotatably connected to the fixed doors, a driving chain is in transmission connection between the two driving wheels, and air cooling mechanisms are arranged on the sliding doors; and a filtering assembly is arranged on the sliding door. When pedestrians stand in front of the sliding door and wait for a subway, the air cooling mechanism on the sliding door is directly used for blowing air to the area in front of the sliding door, the area where the pedestrians stand is cooled, the hot environment of the subway station on the ground is improved, and when the air cooling mechanism conducts wind circulation, the air cooling mechanism drives air of the subway station to pass through the filtering mechanism, and the air is filtered through the filtering mechanism. The filtering mechanism is used for filtering dust in air of the subway station, so that discomfort caused by hot weather when pedestrians wait for the subway at the open type overground subway station in hot summer can be reduced, and meanwhile dust particles in the air of the open type subway station are reduced.

Description

Technical Field

[0001] The present application relates to the field of subway facilities, and in particular to a subway multifunctional shielding door. Background Art

[0002] The subway is a fast, high-capacity, electrically-driven rail transit system built in cities. The subway runs on fully enclosed lines, both underground and above ground. Generally, the lines located in the central urban area are basically set up in underground tunnels, and then part of them will run above ground depending on the actual situation. The basic forms of the subway network include single-line, single-loop, multi-line, and spider web. Each subway line consists of section tunnels, stations, and ancillary buildings.

[0003] A subway station is generally composed of ticket gates, stairs, waiting areas for getting on and off the train, and platform shield doors. The platform shield doors are a safety barrier used to separate the subway tracks from the waiting area. Underground subway stations use fully enclosed platform shield doors, while above-ground subway stations use semi-enclosed platform shield doors. When waiting for the train, passengers usually stand in front of the platform shield doors, waiting for the subway door and the platform shield door to open together after the subway arrives, and then they get on and off the train.

[0004] Metro stations on the ground are generally built in an open style. In the hot summer, when passengers stand in front of semi-enclosed screen doors waiting for the subway, because the space is connected to the outside, the hot weather outside will still affect the waiting passengers, causing them to wait in a relatively hot environment. Summary of the invention

[0005] The purpose of the present application is to solve the problem raised in the above-mentioned background technology that when the weather is hot in summer, when passengers stand in front of a semi-enclosed screen door waiting for the subway, the hot weather outside will still affect the waiting passengers because the space is connected to the outside, causing the passengers to wait in a relatively hot environment. The present application provides a subway multifunctional screen door.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A subway multifunctional shielding door comprises two symmetrical fixed doors, both of which are slidably connected to sliding doors, the fixed doors are rotatably connected to two symmetrical driving wheels, a driving chain is drivingly connected between the two driving wheels, the driving chain is fixedly connected to the sliding doors, an air cooling mechanism is provided on the sliding doors, and a filtering assembly is provided on the sliding doors.

[0007] By adopting the above technical scheme, when pedestrians stand in front of the sliding door waiting for the subway, the air cooling mechanism on the sliding door is directly used to blow air to the area in front of the sliding door, so as to cool down the pedestrian standing area and improve the relatively hot environment of the ground subway station. While the air cooling mechanism performs wind circulation, the air cooling mechanism drives the air of the subway station to pass through the filtering mechanism, and the filtering mechanism filters the dust in the air of the subway station, thereby reducing the discomfort caused by the heat when pedestrians are waiting for the subway in an open ground subway station in hot summer, and at the same time reducing the dust particles in the air of the open subway station and reducing the possibility of dust particles in the air being blown toward pedestrians by the air cooling mechanism.

[0008] Furthermore, the air cooling mechanism includes an air cooling cabin fixed on the sliding door, an air inlet is opened above the air cooling cabin, an air inlet plate is arranged in the air inlet, a plurality of air inlet fans are fixed on the air inlet plate, a plurality of evenly distributed air outlets are opened on the air cooling cabin, a blowing fan is fixed in the air cooling cabin, the blowing fan corresponds to the air outlet, and a refrigeration component is arranged in the air cooling cabin.

[0009] By adopting the above technical solution, the air inlet fan on the air inlet plate draws the outside air into the air cooling cabin, and then the air is cooled by the refrigeration component and blown out from the air outlet by the blower fan to cool the pedestrians standing in front of the sliding door, thereby reducing the discomfort caused by the hot weather when the pedestrians are waiting for the subway.

[0010] Furthermore, the refrigeration component includes a support frame fixed on the air-cooled cabin, the support frame passes through the air-cooled cabin and the sliding door, a support plate is fixed on the support frame, a plurality of refrigeration semiconductors are fixed on the support plate, and a plurality of evenly distributed temperature-conducting fins are fixed on the refrigeration semiconductors.

[0011] By adopting the above technical solution, when the refrigeration plate conductor is working, the temperature of the refrigeration plate conductor and the thermal conductive fins is reduced, and the air is cooled when passing through, so that the air from the outside entering the air-cooled cabin can be cooled, and when the blower blows the air out, the cooling effect on pedestrians is better.

[0012] Furthermore, a condensation water tank is fixed in the air-cooling chamber, the condensation water tank corresponds to the temperature conducting fins, a drain port is opened on one side of the condensation water tank, and the drain port runs through the air-cooling chamber and the sliding door.

[0013] By adopting the above technical solution, the outside air will be cooled and condensed on the cooling semiconductor and the thermal fins. The condensed water will directly drip into the condensation water tank, and then be discharged from the drain port on the condensation water tank to the side of the sliding door close to the subway track, thereby reducing the possibility of condensed water accumulation in the air-cooled cabin.

[0014] Furthermore, a heat sink is fixed on a side of the support plate away from the thermal conductive fins, and a plurality of evenly distributed heat sink fins are fixed on the heat sink.

[0015] By adopting the above technical solution, the area of ​​contact between the heating surface of the refrigeration semiconductor and the air is increased by using heat sinks and heat fins to cool the heating surface of the refrigeration semiconductor, thereby reducing the possibility of damage to the refrigeration semiconductor due to overheating during operation.

[0016] Furthermore, a heat sink is fixed on the support frame, and a plurality of heat sink fans are fixed on the heat sink, and the heat sink fans correspond to the heat sink fins.

[0017] By adopting the above technical solution, the heat dissipation fan on the heat sink is started, and the hot air on the heat sink and the heat dissipation fins is extracted by the heat dissipation fan, thereby improving the heat dissipation effect of the heat sink and the heat dissipation fins, and further reducing the possibility of damage to the refrigeration semiconductor heating surface due to high temperature.

[0018] Furthermore, the filtering mechanism includes a filter frame arranged in the air-cooled cabin, a filter mesh is fixed on the filter frame, a collection box is fixed on one side of the air-cooled cabin, the collection box is connected to the air-cooled cabin, and an oscillation component is arranged between the air-cooled cabin and the filter frame.

[0019] By adopting the above technical solution, when the air intake fan supplies air to the air cooling cabin, the air directly passes through the filter screen on the filter frame, the filter mesh filters the dust particles in the air, and then the filtered air is cooled by the refrigeration semiconductor, thereby reducing the dust particles floating in the air in the subway and reducing the possibility of dust particles being blown toward pedestrians.

[0020] Furthermore, the oscillation component includes an oscillation plate arranged at one end of the filter frame, the oscillation plate is fixedly connected to the air cooling chamber, a shaking shaft is rotatably connected to the oscillation plate, the shaking shaft is fixedly connected to the filter frame, a resistance shaft is arranged at one end of the filter frame away from the shaking shaft, the filter frame is overlapped on the resistance shaft, and a brushless vibration motor is fixed on the filter frame.

[0021] By adopting the above technical solution, the brushless vibration motor drives one end of the filter frame, and the other end of the filter frame is restricted by the shaking shaft, so that the dust particles on the filter mesh are shaken into the collection box, thereby reducing the possibility of dust particles clogging the filter mesh.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. In the present application, when a pedestrian is standing in front of a sliding door waiting for the subway while riding the subway in a relatively hot environment, the air inlet fan on the air inlet plate directly draws outside air into the air cooling cabin, and at the same time starts the refrigeration semiconductor, so that when the refrigeration plate conductor works, the temperature of the refrigeration plate conductor and the thermal conductive fins is reduced, and the air is cooled when passing through, and then the cooled air is blown out from the air outlet by a blower fan to cool the pedestrians standing in front of the sliding door, thereby achieving the purpose of reducing the discomfort caused by the heat when pedestrians are waiting for the subway in an open ground subway station in hot summer.

[0023] 2. In the present application, while the air inlet fan delivers air into the air-cooled cabin, the air directly passes through the filter screen on the filter frame, the filter mesh filters the dust particles in the air, and then the filtered air is cooled by the refrigeration semiconductor, and then the vibration component is started regularly, the oscillation component drives the filter frame and the filter mesh to vibrate, the filter frame and the filter mesh are arranged at an angle, so that the dust particles blocked by the filter mesh enter the collection box, thereby achieving the purpose of reducing the dust particles floating in the air in the subway and reducing the possibility of dust particles being blown toward pedestrians.

[0024] 3. In the present application, when the refrigeration semiconductor is working, the heating surface of the refrigeration semiconductor transfers heat to the heat sink, and then the heat sink transfers the heat to the cooling fins. The heat sink and the cooling fins are used to increase the contact area between the heating surface of the refrigeration semiconductor and the air to cool the heating surface of the refrigeration semiconductor. At the same time, the cooling fan on the heat sink is started, and the hot air on the heat sink and the cooling fins is extracted by the cooling fan, thereby achieving the purpose of reducing the possibility of damage to the heating surface of the refrigeration semiconductor caused by high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first three-dimensional structural schematic diagram of the subway multifunctional screen door in this application; Figure 2 It is a second three-dimensional structural schematic diagram of the subway multifunctional screen door in this application; Figure 3 It is an explosion diagram of the multifunctional subway screen door in this application; Figure 4 It is a partial structural schematic diagram of the subway multifunctional screen door in this application; Figure 5 This application Figure 4 Enlarged schematic diagram at point A in the middle.

[0026] Description of reference numerals: 1. Fixed door; 2. Sliding door; 3. Driving wheel; 4. Driving chain; 5. Air cooling mechanism; 51. Air cooling cabin; 52. Air inlet; 53. Air outlet; 54. Blower fan; 55. Refrigeration component; 551. Support frame; 552. Support plate; 553. Refrigeration semiconductor; 554. Thermal fins; 555. Condensate tank; 556. Heat sink; 557. Heat sink fins; 558. Heat sink; 559. Heat sink fan; 56. Air inlet plate; 57. Air inlet fan; 6. Filter mechanism; 61. Filter frame; 62. Filter mesh; 63. Oscillation component; 64. Collecting box; 631. Oscillation plate; 632. Shaking shaft; 633. Resistance shaft; 634. Brushless vibration motor. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 —5 Provide further details of this application.

[0028] The embodiment of the present application discloses a subway multifunctional platform screen door.

[0029] Reference Figure 1 , Figure 2 and Figure 3 A subway multifunctional shielding door comprises two symmetrical fixed doors 1, both of which are slidably connected to sliding doors 2, two symmetrical driving wheels 3 are rotatably connected to the fixed doors 1, a driving chain 4 is transmission-connected between the two driving wheels 3, the driving chain 4 is fixedly connected to the sliding doors 2, an air cooling mechanism 5 is arranged on the sliding doors 2, and a filtering component is arranged on the sliding doors 2.

[0030] First, fix the corresponding fixed door 1 at the edge of the underground subway station on the ground, so that the sliding door 2 on the fixed door 1 corresponds to the subway door on the subway. After the subway arrives at the station, use the driving wheel 3 to drive the driving chain 4, and let the driving chain 4 drive the sliding door 2 to open and close the sliding door 2. When taking the subway in a relatively hot environment, since the subway station is an open-type subway station on the ground, the hot air from the outside will be connected to the subway platform. When pedestrians stand in front of the sliding door 2 waiting for the subway, the air cooling mechanism 5 on the sliding door 2 is directly used to blow air to the area in front of the sliding door 2 to cool down the pedestrian standing area, thereby improving the relatively hot environment of the underground subway station on the ground. While the air cooling mechanism 5 performs wind circulation At the same time, the air cooling mechanism 5 drives the air of the subway station to pass through the filtering mechanism 6, and the filtering mechanism 6 filters the dust in the air of the subway station, so that the air is blown to the pedestrians after being filtered, and at the same time, the air of the subway station is purified, thereby reducing the possibility of dust particles splashed by the subway passing by and floating in the air of the subway station. By installing the air cooling mechanism 5 on the sliding door 2, the air cooling mechanism 5 is used to blow air to the pedestrians in front of the sliding door 2, and the filtering mechanism 6 filters the air, so as to reduce the discomfort caused by the heat when pedestrians are waiting for the subway in an open ground subway station in hot summer, and at the same time reduce the dust particles in the air of the open subway station, and reduce the possibility of dust particles in the air being blown to pedestrians by the air cooling mechanism 5.

[0031] Reference Figure 3 , Figure 4 and Figure 5 The air cooling mechanism 5 includes an air cooling cabin 51 fixed on the sliding door 2, an air inlet 52 is provided above the air cooling cabin 51, an air inlet plate 56 is provided in the air inlet 52, a plurality of air inlet fans 57 are fixed on the air inlet plate 56, a plurality of evenly distributed air outlets 53 are provided on the air cooling cabin 51, a blowing fan 54 is fixed in the air cooling cabin 51, the blowing fan 54 corresponds to the air outlet 53, and a refrigeration component 55 is provided in the air cooling cabin 51.

[0032] When pedestrians stand in front of the sliding door 2 waiting for the subway and the weather is hot, the air inlet fan 57 on the air inlet plate 56 directly sucks the outside air into the air cooling chamber 51, and then the air is cooled by the refrigeration component 55, and the cooled air is blown out from the air outlet 53 by the blower fan 54, so as to cool the pedestrians standing in front of the sliding door 2. The outside air is brought into the air cooling chamber 51 by the air inlet fan 57, and then cooled by the refrigeration component 55, and then the cooled air is blown to the pedestrians by the blower fan 54, thereby reducing the discomfort caused by the hot weather when pedestrians are waiting for the subway.

[0033] Reference Figure 3 , Figure 4 and Figure 5The refrigeration assembly 55 includes a support frame 551 fixed on the air-cooled chamber 51, the support frame 551 passes through the air-cooled chamber 51 and the sliding door 2, a support plate 552 is fixed on the support frame 551, a plurality of refrigeration semiconductors 553 are fixed on the support plate 552, and a plurality of evenly distributed temperature-conducting fins 554 are fixed on the refrigeration semiconductors 553.

[0034] When outside air enters the air-cooling cabin 51, the cooling side of the refrigeration semiconductor 553 is oriented toward the air-cooling cabin 51. When the refrigeration semiconductor 553 is working, the temperature of the refrigeration plate conductor and the thermal fins 554 is reduced. When the air passes through, the air is cooled. By allowing the air entering the air-cooling cabin 51 to pass through the refrigeration semiconductor 553 and the thermal fins 554 with lower temperatures, the air from the outside entering the air-cooling cabin 51 can be cooled. When the blower fan 54 blows the air out, the cooling effect on pedestrians is better.

[0035] Reference Figure 3 , Figure 4 and Figure 5 A condensation water tank 555 is fixed in the air-cooling chamber 51 , and the condensation water tank 555 corresponds to the temperature-conducting fins 554 . A drainage port is provided on one side of the condensation water tank 555 , and the drainage port runs through the air-cooling chamber 51 and the sliding door 2 .

[0036] When the outside air contacts the cooling surface of the cooling semiconductor 553 and the thermal fins 554, the outside air will generate condensed water on the cooling semiconductor 553 and the thermal fins 554 after being cooled. The condensed water will directly drip into the condensation water tank 555, and then be discharged from the drain port on the condensation water tank 555 to the side of the sliding door 2 close to the subway track. By utilizing the condensation water tank 555 to receive and drain the generated condensed water, the possibility of condensed water accumulating in the air-cooled cabin 51 can be reduced.

[0037] Reference Figure 3 , Figure 4 and Figure 5 A heat sink 556 is fixed to a side of the support plate 552 away from the thermal conductive fins 554 , and a plurality of evenly distributed heat sink fins 557 are fixed to the heat sink 556 .

[0038] When the refrigeration semiconductor 553 is working, the heating surface of the refrigeration semiconductor 553 transfers heat to the heat sink 556, and then the heat sink 556 transfers the heat to the heat dissipation fins 557. The heat sink 556 and the heat dissipation fins 557 are used to increase the contact area between the heating surface of the refrigeration semiconductor 553 and the air, so as to cool the heating surface of the refrigeration semiconductor 553. By using the heat sink 556 and the heat dissipation fins 557 to cool the heating surface of the refrigeration semiconductor 553, the possibility of damage to the refrigeration semiconductor 553 due to overheating when it is working can be reduced.

[0039] Reference Figure 3 , Figure 4 and Figure 5 A heat sink 558 is fixed on the support frame 551 , and a plurality of heat sink fans 559 are fixed on the heat sink 558 , and the heat sink fans 559 correspond to the heat sink fins 557 .

[0040] When the refrigeration semiconductor 553 is working, the heat sink 556 and the heat fins 557 cool down the heating surface of the refrigeration semiconductor 553, and at the same time, the heat dissipation fan 559 on the heat sink 558 is started, and the hot air on the heat sink 556 and the heat fins 557 is extracted by the heat dissipation fan 559. By using the heat dissipation fan 559 on the heat sink 558 to extract the hot air on the heat sink 556 and the heat fins 557, the heat dissipation effect of the heat sink 556 and the heat fins 557 can be improved, and the possibility of damage to the heating surface of the refrigeration semiconductor 553 due to high temperature can be further reduced.

[0041] Reference Figure 3 , Figure 4 and Figure 5 The filtering mechanism 6 includes a filtering frame 61 arranged in the air-cooling cabin 51, a filtering screen 62 is fixed on the filtering frame 61, a collecting box 64 is fixed on one side of the air-cooling cabin 51, the collecting box 64 is connected to the air-cooling cabin 51, and an oscillating component 63 is arranged between the air-cooling cabin 51 and the filtering frame 61.

[0042] When the air intake fan 57 supplies air to the air cooling cabin 51, the air directly passes through the filter screen on the filter frame 61, and the filter screen 62 filters the dust particles in the air. The filtered air is then cooled by the refrigeration semiconductor 553, and then the vibration component is started regularly. The oscillation component 63 drives the filter frame 61 and the filter screen 62 to vibrate. The filter frame 61 and the filter screen are arranged at an angle to allow the dust particles blocked by the filter screen 62 to enter the collection box 64. By allowing the outside air to be sent into the air cooling cabin 51 by the air intake fan 57, the dust particles in the air are filtered by the filter screen 62, thereby reducing the dust particles floating in the air in the subway and reducing the possibility of dust particles being blown toward pedestrians.

[0043] Reference Figure 4 and Figure 5The oscillation component 63 includes an oscillation plate 631 arranged at one end of the filter frame 61, the oscillation plate 631 is fixedly connected to the air cooling chamber 51, a shaking shaft 632 is rotatably connected to the oscillation plate 631, the shaking shaft 632 is fixedly connected to the filter frame 61, a resistance shaft 633 is arranged at one end of the filter frame 61 away from the shaking shaft 632, the filter frame 61 is overlapped on the resistance shaft 633, and a brushless vibration motor 634 is fixed to the filter frame 61. When the dust particles filtered by the filter screen 62 need to be put into the collection box 64, the brushless vibration motor 634 is first started. The brushless vibration motor 634 drives one end of the filter frame 61, and the other end of the filter frame 61 is restricted by the shaking shaft 632. One end of the filter frame 61 drives the filter screen 62 to oscillate, so that the dust particles on the filter screen 62 are shaken and fall into the collection box 64. By using the brushless vibration motor 634 to regularly drive the filter frame 61 to vibrate, the dust particles filtered by the filter screen 62 are allowed to enter the collection box 64, thereby reducing the possibility of dust particles clogging the filter screen 62.

[0044] Working principle: first, fix the corresponding fixed door 1 at the edge of the subway station on the ground, and make the sliding door 2 on the fixed door 1 correspond to the subway door on the subway. After the subway arrives at the station, use the driving wheel 3 to drive the driving chain 4, and let the driving chain 4 drive the sliding door 2 to open and close the sliding door 2. When taking the subway in a relatively hot environment, since the subway station is an open subway station on the ground, the hot air from the outside will be connected to the subway platform. When pedestrians stand in front of the sliding door 2 waiting for the subway, the air intake fan 57 on the air intake plate 56 directly sucks the outside air into the air cooling cabin 51, and at the same time starts the refrigeration semiconductor 553. When the refrigeration semiconductor 553 is working, let the refrigeration plate conductor and The temperature of the heat-conducting fins 554 is reduced, and the air is cooled when passing through it. The cooled air is then blown out from the air outlet 53 by the blower fan 54 to cool the pedestrians standing in front of the sliding door 2. While the air inlet fan 57 supplies air to the air-cooled cabin 51, the air directly passes through the filter screen on the filter frame 61. The filter screen 62 filters the dust particles in the air. The filtered air is then cooled by the refrigeration semiconductor 553. The vibration component is then started regularly, and the oscillation component 63 drives the filter frame 61 and the filter screen 62 to vibrate. The filter frame 61 and the filter screen are arranged at an angle to allow the dust particles blocked by the filter screen 62 to enter the collection box 64.

Claims

1. A multifunctional subway screen door, comprising two symmetrical fixed doors (1), characterized in that: The two fixed doors (1) are both slidably connected to a sliding door (2); the fixed door (1) is rotatably connected to two symmetrical drive wheels (3); a drive chain (4) is transmission-connected between the two drive wheels (3); the drive chain (4) is fixedly connected to the sliding door (2); an air cooling mechanism (5) is provided on the sliding door (2); and a filter assembly is provided on the sliding door (2).

2. The multifunctional subway screen door according to claim 1, characterized in that: The air cooling mechanism (5) comprises an air cooling chamber (51) fixed on the sliding door (2); an air inlet (52) is provided above the air cooling chamber (51); an air inlet plate (56) is provided inside the air inlet (52); a plurality of air inlet fans (57) are fixed on the air inlet plate (56); a plurality of evenly distributed air outlets (53) are provided on the air cooling chamber (51); a blowing fan (54) is fixed inside the air cooling chamber (51); the blowing fan (54) corresponds to the air outlet (53); and a refrigeration component (55) is provided inside the air cooling chamber (51).

3. The multifunctional subway screen door according to claim 2, characterized in that: The refrigeration assembly (55) comprises a support frame (551) fixed on the air-cooling chamber (51), the support frame (551) penetrating the air-cooling chamber (51) and the sliding door (2), a support plate (552) fixed on the support frame (551), a plurality of refrigeration semiconductors (553) fixed on the support plate (552), and a plurality of evenly distributed temperature-conducting fins (554) fixed on the refrigeration semiconductors (553).

4. The multifunctional subway screen door according to claim 3, characterized in that: A condensation water tank (555) is fixed in the air cooling chamber (51), the condensation water tank (555) corresponds to the temperature conducting fin (554), a drainage port is provided on one side of the condensation water tank (555), and the drainage port penetrates the air cooling chamber (51) and the sliding door (2).

5. The multifunctional subway screen door according to claim 3, characterized in that: A heat sink (556) is fixed to a side of the support plate (552) away from the thermal conductive fins (554), and a plurality of evenly distributed heat sink fins (557) are fixed to the heat sink (556).

6. The multifunctional subway screen door according to claim 5, characterized in that: A heat sink (558) is fixed on the support frame (551), and a plurality of heat sink fans (559) are fixed on the heat sink (558), wherein the heat sink fans (559) correspond to the heat sink fins (557).

7. The multifunctional subway screen door according to claim 2, characterized in that: The filtering mechanism (6) comprises a filtering frame (61) arranged in an air-cooling chamber (51), a filtering screen (62) being fixed on the filtering frame (61), a collecting box (64) being fixed on one side of the air-cooling chamber (51), the collecting box (64) being connected to the air-cooling chamber (51), and an oscillating assembly (63) being arranged between the air-cooling chamber (51) and the filtering frame (61).

8. The multifunctional subway screen door according to claim 7, characterized in that: The oscillation component (63) comprises an oscillation plate (631) arranged at one end of the filter frame (61); the oscillation plate (631) is fixedly connected to the air cooling chamber (51); a shaking shaft (632) is rotatably connected to the oscillation plate (631); the shaking shaft (632) is fixedly connected to the filter frame (61); a resistance shaft (633) is arranged at one end of the filter frame (61) away from the shaking shaft (632); the filter frame (61) is overlapped on the resistance shaft (633); and a brushless vibration motor (634) is fixed to the filter frame (61).

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