Dust collection device for subway platform

Abstract

The utility model discloses a dust collection device for a subway platform. The dust collection device comprises a mounting frame, a dust collection unit and a negative pressure pipeline, the dust collection unit comprises a shell, and a filter screen is arranged at the front end of the shell; a dust brushing mechanism is arranged at the front end of the shell; a first motor is arranged outside the front side of the shell, and the output end of the first motor penetrates into the shell to be connected with a sector gear. A fixed block located on the inner side of the filter screen is arranged in the shell, and a movable block is slidably connected to the fixed block; a vertical groove is formed in the side part of the fixed block; convex teeth are arranged on the side portion of the movable block and penetrate out of the vertical groove to be externally meshed with the sector gear. A plurality of impact blocks are arranged at the lower end of the moving block; a limiting block is arranged at the top of the movable block, and a plurality of springs are arranged between the limiting block and the fixed block. Dust attached to the filter screen is removed in a washing and vibrating mode, the dust collection efficiency of the device is guaranteed, and manual operation is reduced.

Description

Technical Field

[0001] This utility model relates to a vacuum cleaner for subway platforms, belonging to the technical field of vacuum cleaners. Background Technology

[0002] For subway platforms without platform screen doors, the concentration of fine particulate pollutants such as PM2.5 and PM10 in the platform space increases sharply in a short period of time when subway trains enter and stop at high speed in the tunnel. The pollution mainly comes from two sources: metal and non-metal particles generated by the friction of train braking, and dust carried by the piston wind as the train passes through the tunnel at high speed. Actual measurement data shows that at the moment a train enters the station, the PM2.5 concentration at such platforms can reach 3-5 times the daily average, and the proportion of metal components in the pollutants is significantly higher than in the outdoor environment, seriously threatening the respiratory health of passengers, especially vulnerable groups such as children and the elderly. To address this, various subway dust collection devices have been designed within the industry. For example, Chinese utility model patent CN205613180U discloses an automatic dust collection device for subway platforms, specifically including a dust collection mechanism installed on the platform screen doors, a dust filtration mechanism connected to the dust collection mechanism via ventilation ducts, and an infrared control mechanism installed at the subway entrance. The dust collection mechanism includes a branch pipe network installed within at least part of the screen door frame, and an air intake on the screen door frame connected to the branch pipe network. The branch pipe network is connected to the ventilation ducts. The dust filtration mechanism includes a fan connected to the ventilation ducts and a dust collector connected to the fan. In practical applications, especially in the high-frequency operation of subways, there is still room for improvement in the cleaning and maintenance of the filters in such dust collection devices. After prolonged use, dust and dirt easily accumulate on the filter screens, affecting dust collection efficiency to some extent. The current maintenance method, which relies on manual disassembly and cleaning on a regular basis, not only requires a high level of manpower but also involves complex procedures and is time-consuming. In the context of continuous and efficient subway operation, the convenience and efficiency of its cleaning and maintenance still need to be further improved. Utility Model Content

[0003] The purpose of this invention is to provide a dust collection device for subway platforms. This invention removes dust adhering to the filter screen through washing and vibration, ensuring the dust collection efficiency of the device and reducing manual operation.

[0004] The technical solution of this utility model is as follows: A vacuuming device for subway platforms includes a mounting frame with multiple vacuuming units on the frame. Each vacuuming unit is connected to a negative pressure pipe, which passes through the mounting frame and is interconnected. Each vacuuming unit includes a housing with a filter screen at its front end. A dust-brushing mechanism is located at the front end of the housing, with its cleaning end contacting the outer side of the filter screen. A first motor is located on the outer front side of the housing, with its output end penetrating the housing and connected to a sector gear located inside the filter screen. The sector gear is situated inside the housing. A fixed block is located inside the filter screen, and a movable block is slidably connected to the fixed block. A vertical groove is located on the side of the fixed block. A tooth is located on the side of the movable block, extending from the vertical groove and meshing with the sector gear. Multiple impact blocks are located at the lower end of the movable block. A limiting block is located at the top of the movable block, and multiple springs are located between the limiting block and the fixed block.

[0005] The aforementioned dust collection device for subway platforms includes a dust brushing mechanism comprising a second motor located on the outside of the left side of the housing. The output end of the second motor is inserted into the housing and connected to a screw. A nut block is connected to the screw. A brush is provided at the end of the nut block facing the filter screen, and the brush is in contact with the filter screen. A guide rail is provided on the inside of the housing, and the guide rail is slidably connected to the nut block.

[0006] The aforementioned vacuum cleaner for subway platforms has symmetrically arranged connecting ears on the upper end of the housing; multiple pairs of connecting plates are provided on the mounting frame, and the connecting plates are rotatably connected to the connecting ears; a rotating seat is provided on the side of the housing; and multiple cylinders are rotatably connected to the mounting frame, with the output end of the cylinders rotatably connected to the rotating seat.

[0007] The aforementioned vacuum cleaner for subway platforms has a mounting groove at the lower rear end of the housing, and a disassembly shell is connected to the mounting groove; grooves are symmetrically arranged on both sides of the mounting groove; and protrusions are provided on the disassembly shell, which cooperate with the grooves.

[0008] The aforementioned vacuum cleaner for subway platforms has multiple through holes on the left and right outer sides of the housing, which are connected to the grooves; the protrusion has multiple threaded holes, which correspond to the through holes.

[0009] The aforementioned vacuum cleaner for subway platforms has mounting blocks symmetrically arranged on the left and right sides of the housing, with gaps between the mounting blocks; the filter screen is placed in the gaps between the mounting blocks; after the housing is removed, the mounting blocks are exposed in the visible space.

[0010] The aforementioned vacuum cleaner for subway platforms has an L-shaped moving block with the bent end extending towards the rear of the housing; the impact block is made of natural rubber.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In this utility model, by connecting a negative pressure pipe to an external negative pressure suction device, the operation of the external negative pressure suction device generates negative pressure within the negative pressure pipe, thereby drawing dust from the dust collection unit. When a large amount of dust on the filter screen of the dust collection unit affects the dust collection efficiency, the negative pressure suction device continues to operate. The dust brushing mechanism brushes off the dust on the outside of the filter screen, which is then sucked away by the negative pressure. Simultaneously, the first motor starts, causing the sector gear to rotate. The sector gear, through its convex teeth, moves the moving block upward. At this time, the spring is stretched until the sector gear separates from the convex teeth. Under the action of the spring, the moving block moves rapidly towards the filter screen, and the impact block strikes the filter screen, causing it to vibrate. This causes the dust attached to the filter screen to fall off and be sucked away by the negative pressure, thus achieving the effect of automatically cleaning the filter screen. Therefore, this utility model achieves the effect of removing dust attached to the filter screen through washing and vibration, ensuring the dust collection efficiency of the device. It has the advantages of simple structure and obvious effect.

[0013] 2. In this utility model, the screw is rotated by the second motor, the screw engages with the screw hole on the nut block, and with the cooperation of the guide rail, the nut block moves along the guide of the screw. By rotating the second motor in both directions, the nut block and its brush move back and forth to wash the outside of the filter screen. Attached Figure Description

[0014] Figure 1 This is an installation diagram of this utility model;

[0015] Figure 2 This is a schematic diagram of the vacuum unit.

[0016] Figure 3 This is a schematic diagram of the structure after removing the disassembly shell;

[0017] Figure 4 This is a structural diagram of the moving block;

[0018] Figure 5 This is a schematic diagram of the rear structure of the vacuum unit;

[0019] Figure 6 This is a structural diagram showing the disassembled shell;

[0020] Figure 7 This is a partial structural diagram of the moving block.

[0021] The labels in the attached diagram are as follows: 1-Mounting frame, 2-Dust suction unit, 3-Negative pressure pipe, 4-Housing shell, 5-Filter screen, 6-Dust brushing mechanism, 7-First motor, 8-Sector gear, 9-Fixing block, 10-Moving block, 11-Vertical groove, 12-Protruding tooth, 13-Impact block, 14-Limiting block, 15-Spring, 16-Connecting ear, 17-Connecting plate, 18-Rotating seat, 19-Cylinder, 20-Mounting groove, 21-Disassembly shell, 22-Groove, 23-Protrusion, 24-Through hole, 25-Threaded hole, 26-Mounting block, 30-Second motor, 31-Screw, 32-Nut block, 33-Brush, 34-Guide rail. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0023] Example: A vacuum cleaner for subway platforms, configured as follows Figure 1-6 As shown, the system includes a mounting frame 1 made of high-strength aluminum alloy, which is lightweight and corrosion-resistant. Multiple suction units 2 are mounted on the mounting frame 1, and negative pressure pipes 3 are connected to each suction unit 2. The negative pressure pipes 3 penetrate the mounting frame 1 and are interconnected. The negative pressure pipes 3 are connected to an external negative pressure suction device. When the external negative pressure suction device operates, it creates negative pressure within the negative pressure pipes 3, thereby drawing dust from the suction units 2. Figure 4 As shown, the vacuuming unit 2 includes a housing 4, with a filter screen 5 at the front end of the housing 4 to prevent larger debris from being sucked in; a dust brushing mechanism 6 is also provided at the front end of the housing 4, with the cleaning end of the dust brushing mechanism 6 contacting the outer side of the filter screen 5; as shown... Figure 5 As shown, a first motor 7 is provided on the front exterior of the housing 4. The output end of the first motor 7 passes through the interior of the housing 4 and is connected to a sector gear 8, which is located inside the filter screen 5. A fixed block 9 is provided inside the housing 4, located inside the filter screen 5. A movable block 10 is slidably connected to the fixed block 9. The movable block 10 is L-shaped and its bent end extends towards the rear of the housing 4. Figure 7As shown, the fixed block 9 has a vertical groove 11 on its side; the movable block 10 has a tooth 12 on its side, which protrudes from the vertical groove 11 and meshes with the sector gear 8; the lower end of the movable block 10 has multiple impact blocks 13, which are made of natural rubber, have good elasticity, and can reduce damage to the filter screen 5 and produce low noise when struck; the top of the movable block 10 has a limiting block 14, and multiple springs 15 are provided between the limiting block 14 and the fixed block 9. When there is a lot of dust on the filter screen 5 of the dust collection unit 2, affecting the dust collection efficiency, the negative pressure suction device continues to work. The dust brushing mechanism 6 brushes off the dust on the outside of the filter screen 5 and it is sucked away by the negative pressure. At the same time, the first motor 7 starts, causing the sector gear 8 to rotate. The sector gear 8 moves the moving block 10 upward through the convex tooth 12. At this time, the spring 15 is stretched until the sector gear 8 separates from the convex tooth 12. Under the action of the spring 15, the moving block 10 moves quickly towards the filter screen 5 and knocks the filter screen 5 with the impact block 13 to make it vibrate, thereby causing the dust attached to the filter screen 5 to fall off and be sucked away by the negative pressure, thus achieving the effect of automatically cleaning the filter screen 5. During the period from 30 seconds before the train arrives at the station to 30 seconds after it departs from the station, the suction power of the negative pressure suction device is turned on to the maximum. During other times, the suction power can be adjusted appropriately to minimize the concentration of pollutants on the platform.

[0024] Preferably, such as Figure 3 and Figure 4 As shown, the dust brushing mechanism 6 includes a second motor 30 located on the outer left side of the housing 4. The output end of the second motor 30 passes through the interior of the housing 4 and is connected to a screw 31. A nut block 32 is connected to the screw 31, and a brush 33 is provided at the end of the nut block 32 facing the filter screen 5, with the brush 33 in contact with the filter screen 5. A guide rail 34 is provided on the inner side of the housing 4, and the guide rail 34 is slidably connected to the nut block 32. The second motor 30 causes the screw 31 to rotate, and the screw 31 engages with the screw hole on the nut block 32. With the cooperation of the guide rail 34, the nut block 32 moves along the guide of the screw 31. The forward and reverse rotation of the second motor 30 causes the nut block 32 and its brush 33 to move back and forth, washing the outer side of the filter screen 5.

[0025] Preferably, such as Figure 2 As shown, the upper end of the housing 4 is symmetrically provided with connecting ears 16; the mounting frame 1 is provided with multiple pairs of connecting plates 17, which are rotatably connected to the connecting ears 16; the side of the housing 4 is provided with a rotating seat 18; multiple cylinders 19 are rotatably connected to the mounting frame 1, and the output end of the cylinders 19 is rotatably connected to the rotating seat 18. The extension and retraction of the cylinders 19 allows the housing 4 to swing within a certain angle range, thereby increasing the effective dust collection area.

[0026] Preferably, such as Figure 3As shown, the lower rear end of the housing 4 is provided with a mounting groove 20, and a disassembly shell 21 is connected to the mounting groove 20; grooves 22 are symmetrically arranged on both sides of the mounting groove 20; the disassembly shell 21 is provided with a protrusion 23, which cooperates with the groove 22. Multiple through holes 24 are provided on the left and right outer sides of the housing 4, and the through holes 24 communicate with the grooves 22; multiple threaded holes 25 are provided on the protrusions 23, and the threaded holes 25 correspond to the through holes 24. Mounting blocks 26 are symmetrically arranged vertically on the left and right sides of the housing 4, with gaps between the mounting blocks 26; the filter screen 5 is placed in the gaps between the mounting blocks 26; after the disassembly shell 21 is removed, the mounting blocks 26 are exposed in the visible space. When the filter screen 5 needs to be replaced, remove the disassembly shell 21, take out the old filter screen 5 from between the mounting blocks 26 and replace it with the new one. Then, align the protrusion 23 of the disassembly shell 21 with the groove 22 and insert it. Screw the bolt into the outside of the through hole 24 and make its threaded end engage with the threaded hole 25, so that the shell 4 and the disassembly shell 21 are fixedly connected.

[0027] Working principle:

[0028] After the external negative pressure equipment is started, negative pressure is formed in each suction unit 2 through the connected negative pressure pipe 3. The air carrying dust in the station is sucked in from the front end of the suction unit 2. When the dust on the filter screen 5 affects the suction efficiency, the automatic cleaning process is started: the second motor 30 drives the screw 31 to rotate, and the nut block 32 screwed with the screw 31 moves back and forth along the screw 31 with the cooperation of the guide rail 34, which drives the brush 33 at its front end to brush the outside of the filter screen back and forth, loosening the dust on the outside of the filter screen 5. The dust brushed off is then sucked away by the negative pressure airflow. At the same time, the first motor 7 drives the sector gear 8 to rotate. The sector gear 8 pushes the moving block 10 to move upward along the vertical groove 11 of the fixed block 9 through the convex tooth 12 and stretches the spring 15. When the sector gear 8 separates from the convex tooth 12, the spring 15 releases elastic potential energy, causing the moving block 10 to quickly strike the filter screen downward. The dust attached deep to the filter screen is shaken off by vibration, and the dust that falls off is also sucked away by the negative pressure. In addition, the cylinder 19 on the mounting frame 1 can drive the housing 4 to rotate around the connecting plate 17 through telescopic movement, adjust the tilt angle of the housing 4, and make the dust collection unit 2 swing within a certain range, thereby expanding the effective dust collection area, covering dust sources in different locations, and realizing the coordinated operation of multi-directional efficient dust collection and automated cleaning.

Claims

1. A subway platform dust suction device, comprising a mounting frame (1), a plurality of dust suction units (2) are arranged on the mounting frame (1), a negative pressure pipeline (3) is connected to the dust suction units (2), and the negative pressure pipelines (3) penetrate into the mounting frame (1) and are in communication with each other; characterized in that: The dust collection unit (2) includes a housing (4), with a filter screen (5) at the front end of the housing (4); a dust brushing mechanism (6) is provided at the front end of the housing (4), with the cleaning end of the dust brushing mechanism (6) contacting the outside of the filter screen (5); a first motor (7) is provided on the outside of the front side of the housing (4), with the output end of the first motor (7) penetrating into the housing (4) and connected to a sector gear (8), the sector gear (8) being located inside the filter screen (5); and a filter screen (5) is located inside the housing (4). A fixed block (9) is attached to the side, and a movable block (10) is slidably connected to the fixed block (9); a vertical groove (11) is provided on the side of the fixed block (9); a protruding tooth (12) is provided on the side of the movable block (10), and the protruding tooth (12) passes through the vertical groove (11) and meshes with the sector gear (8); a plurality of impact blocks (13) are provided at the lower end of the movable block (10); a limiting block (14) is provided at the top of the movable block (10), and a plurality of springs (15) are provided between the limiting block (14) and the fixed block (9).

2. The dust suction device for a subway platform according to claim 1, characterized by: The dust brushing mechanism (6) includes a second motor (30) located on the outside of the left side of the housing (4). The output end of the second motor (30) is inserted into the housing (4) and connected to a screw (31). A nut block (32) is connected to the screw (31). A brush (33) is provided at one end of the nut block (32) facing the filter screen (5). The brush (33) is in contact with the filter screen (5). A guide rail (34) is provided on the inner side of the housing (4). The guide rail (34) is slidably connected to the nut block (32).

3. The dust suction device for a subway platform according to claim 1, characterized by: The upper end of the housing (4) is symmetrically provided with connecting ears (16); the mounting frame (1) is provided with multiple pairs of connecting plates (17), which are rotatably connected to the connecting ears (16); the side of the housing (4) is provided with a rotating seat (18); multiple cylinders (19) are rotatably connected to the mounting frame (1), and the output end of the cylinder (19) is rotatably connected to the rotating seat (18).

4. The dust suction device for a subway platform according to claim 1, characterized by: The lower rear end of the housing (4) is provided with an installation groove (20), and a disassembly housing (21) is connected to the installation groove (20); grooves (22) are symmetrically arranged on both sides of the installation groove (20); a protrusion (23) is provided on the disassembly housing (21), and the protrusion (23) cooperates with the groove (22).

5. The dust suction device for a subway platform according to claim 4, characterized by: The shell (4) has multiple through holes (24) on its left and right outer sides, and the through holes (24) are connected to the groove (22); the protrusion (23) has multiple threaded holes (25), and the threaded holes (25) correspond to the through holes (24).

6. The dust suction device for a subway platform according to claim 4, characterized by: The housing (4) has mounting blocks (26) symmetrically arranged on the left and right sides, with gaps between the mounting blocks (26); the filter screen (5) is placed in the gaps between the mounting blocks (26); after the disassembly housing (21) is removed, the mounting blocks (26) are exposed in the visible space.

7. The dust suction device for a subway platform according to claim 1, characterized by: The moving block (10) is L-shaped and the bent end extends to the rear side of the housing (4); the impact block (13) is made of natural rubber.

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