Louver filter with filter screen convenient to maintain

Abstract

The invention relates to the technical field of shutter filters, in particular to a shutter filter convenient for maintenance of filter screens, which comprises a shutter frame, a rolling box is fixedly connected to the top wall of the shutter frame, a water storage box is fixedly connected to the bottom wall of the shutter frame, rotating shafts are rotatably connected in the rolling box and the water storage box, and the two rotating shafts are sleeved with belt type filter screens. A turnover motor is installed on the winding box, first filtering holes are formed in the belt type filtering net in an array penetrating mode, and a cleaning assembly is arranged in the water storage box. When dust is accumulated in the first filtering holes in the face, facing the air inlet side, of the belt type filtering net, the air quantity penetrating through the first filtering holes in the face is reduced, the air speed sensor senses that the air quantity is reduced, the overturning motor is started to drive the rotating shaft to rotate, and therefore the belt type filtering net on the rotating shaft is driven to rotate to change the face; the outer side face of the belt type filter screen penetrates through the water storage box, dust intercepted on the surface of the belt type filter screen is cleaned through the cleaning assembly, the belt type filter screen does not need to be detached and cleaned, and maintenance is simpler and more intelligent.

Description

Technical Field

[0001] This invention relates to the field of louver filter technology, and more particularly to a louver filter that is easy to maintain. Background Technology

[0002] In locomotive and EMU operating systems, auxiliary transformer cabinets are critical electrical equipment, and their stability directly affects the safety of the entire vehicle. To prevent dust and impurities from entering and causing component wear and short circuits, air inlets need to be equipped with filtration devices. Louvered filters have become the mainstream choice due to their compact structure and good ventilation. The core component of existing louvered filters is the filter screen, which physically intercepts dust. However, locomotives and powertrains operate in complex environments, and when traversing dusty sections, the filter screen easily accumulates dirt quickly. This increases ventilation resistance, reduces the heat dissipation efficiency of the transformer cabinet, and can trigger overheating warnings. Therefore, regular disassembly and cleaning are necessary, and replacement is required when severely damaged. Furthermore, single-layer filter screens have poor dust-proofing performance and cannot achieve multi-stage interception; multi-layer designs further increase the difficulty of disassembly. However, the current filter structure has obvious defects: the filter screen is mostly fixed to the frame by bolts and clips, and disassembly requires tools to loosen and tighten the fasteners, which is a cumbersome process; the filter screen is tightly fitted to the frame, and the gaps are prone to dirt accumulation, which not only increases the difficulty of disassembly, but may also scratch the filter screen and shorten its lifespan; after installation, the position needs to be calibrated to ensure a seal, and the entire maintenance requires 2-3 people to cooperate, which is time-consuming, which not only takes up operation and maintenance time, but also increases labor and consumable costs. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a louvered filter that facilitates filter maintenance. It solves the problems of frequent filter screen disassembly cycles, cumbersome and time-consuming disassembly and cleaning procedures, high disassembly difficulty leading to filter screen damage, and the inability of single-layer filters to achieve multi-stage interception and poor dust prevention. Furthermore, multi-layer designs further increase the difficulty of disassembly. This invention achieves dual dust prevention and interception with a single belt filter screen without the need for disassembly, changing passive disassembly and cleaning to active cleaning and reducing the filter screen replacement cycle.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a louvered filter that facilitates filter maintenance, comprising a louvered frame, a winding box fixedly connected to the top wall of the louvered frame, and a water storage box for cleaning the filter fixedly connected to the bottom wall of the louvered frame. Both the winding box and the water storage box are rotatably connected to shafts, on which belt filters are fitted. A flip motor is installed on the winding box to drive the internal shafts to rotate. The belt filters have an array of through-holes (I) and an array of sliding cavities communicating with the first filter hole. A slider slides within the sliding cavity, and a second filter hole is formed on the slider. Wind speed sensors for monitoring the blockage of the first filter hole are installed at both ends of the inner wall of the louvered frame, and the wind speed sensors are located within the gaps between the layers of the belt filters. A cleaning component for washing and dust removal of the belt filters is installed in the water storage box, and a dust removal component for sweeping and cleaning the belt filters is installed at the bottom of the winding box.

[0005] A further improvement is that the bottom of the winding box and the top of the water storage box are both provided with slots that are compatible with the belt filter screen, the slider is made of elastic metal material, and the diameter of the second filter hole on the slider is smaller than the diameter of the first filter hole.

[0006] A further improvement is that the cleaning assembly includes a brush rotatably connected to a water storage box, a cleaning motor that drives the brush to rotate is installed on the water storage box, a sealing box fitted onto the belt filter is installed at the inner groove of the water storage box, elastic scrapers that fit against the belt filter are fixed to both sides of the bottom of the sealing box, a pressure spring whose end abuts against the elastic scraper is installed obliquely on the inner wall of the sealing box, and a drying unit for drying the cleaned belt filter is provided inside the sealing box.

[0007] A further improvement is that the drying unit includes an air supply plate fixed to the inner walls of both sides of the sealed box, an air outlet blade is provided on the air supply plate, a dryer is installed in the louver frame mounting groove, and an air inlet pipe extending into the air supply plate is installed at the air outlet of the dryer.

[0008] A further improvement is that the air outlet blade is a tapered structure with an inner width and an outer width that is inclined downwards, and a drainage groove extending into the water storage box is provided on the elastic scraper.

[0009] A further improvement is that the dust removal assembly includes a dust removal box installed at the bottom of the take-up box, with multiple long-bristled soft brushes vertically and equidistantly connected inside the dust removal box, an electrostatic adsorption plate installed on the inner wall of the dust removal box, and a dust collection box installed at the bottom of the dust removal box.

[0010] A further improvement is that the dust removal components consist of two sets, which are located on both sides of the belt filter. The dust collection box is fitted to the side and bottom of the belt filter and has an open structure. The long-bristled soft brushes in the two sets of dust removal components are connected by a transmission component.

[0011] A further improvement is that anti-reverse plates are symmetrically and obliquely installed on the inner walls of both sides of the dust collection box.

[0012] By employing the above technical solution, the present invention provides a louvered filter that is easy to maintain, and has at least the following beneficial effects: 1. This invention uses a belt filter to intercept and filter external dust. Each filter hole on the belt filter has a sliding cavity at its bottom, and a slider is installed inside each sliding cavity. Therefore, on the side of the belt filter facing the air inlet, dust is intercepted through the filter hole. On the inner side of the belt filter, under the influence of gravity, the slider in the sliding cavity slides down, overlaps with the filter hole on that side, and blocks it. The smaller filter hole on the slider then achieves the interception and filtration effect. Thus, the belt filter achieves dual interception of external dust through the two filter holes of different diameters, improving the dust interception and filtration efficiency.

[0013] 2. When dust accumulates in the filter holes on the belt filter side facing the air inlet, the airflow through the filter holes decreases. The wind speed sensor detects the decrease in airflow, the flip motor starts, and drives the rotating shaft to rotate. This causes the belt filter on the rotating shaft to rotate and change its surface. During the surface change process, the outer surface of the belt filter passes through the water storage box, and the cleaning component cleans the large amount of dust intercepted on its surface. There is no need to disassemble and clean the belt filter, making maintenance simpler and more intelligent.

[0014] 3. This invention uses an elastic scraper to remove residual water from the surface of the belt filter screen. Then, the dryer is started, and hot air is sent into the air supply plate through the air inlet pipe. The air is then blown out through the inclined air outlet blades on the air supply plate, which are wider inside and narrower outside. This blows the small amount of water remaining on the surface of the belt filter screen downwards and dries it quickly, preventing the water droplets remaining on the surface of the belt filter screen from falling and escaping.

[0015] 4. This invention drives all the long-bristled soft brushes to rotate through the transmission component, sweeping off the dust adhering to the inner side of the belt filter screen. The high-voltage electric field formed by the electrostatic adsorption plate captures and adsorbs the swept dust, preventing dust from spilling out. After the belt filter screen is cleaned and replaced, the power to the electrostatic adsorption plate is stopped, and the dust captured on the surface of the electrostatic adsorption plate is swept off into the dust collection box by the still rotating long-bristled soft brushes. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the independent structure of the belt filter screen of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the side cross-sectional structure at point A in the middle; Figure 5 This is a cross-sectional view of the disassembled structure of the winding box of the present invention; Figure 6 This is a cross-sectional top view of the internal structure of the winding box of the present invention; Figure 7 This is a schematic diagram of the independently disassembled winding box structure of the present invention; Figure 8 This is a cross-sectional view of the internal structure of the water storage box of the present invention; Figure 9 This is a side-section schematic diagram of the internal structure of the sealing box of the present invention; Figure 10 This is a schematic diagram of the internal structure of the sealing box of the present invention, viewed from an independent side section.

[0018] In the diagram: 1. Venetian blind frame; 2. Rewind box; 3. Water tank; 4. Shaft; 5. Belt filter; 6. Tilting motor; 7. Filter hole one; 8. Sliding cavity; 9. Slider; 10. Filter hole two; 11. Wind speed sensor; 12. Cleaning assembly; 121. Brush; 122. Cleaning motor; 123. Sealing box; 124. Elastic scraper; 125. Pressure spring; 126. Drying unit; 1261. Air supply plate; 1262. Air outlet blade; 1263. Dryer; 1264. Air inlet pipe; 13. Dust removal components; 131. Dust collection box; 132. Long-bristled soft brush; 133. Electrostatic adsorption plate; 134. Dust collection box; 135. Transmission components; 136. Anti-reverse plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Addressing the issues of frequent filter screen removal, cumbersome and time-consuming disassembly and cleaning processes, high disassembly difficulty leading to filter screen damage, and the inability of single-layer filters to achieve multi-stage interception and poor dust prevention, while multi-layer designs further increase disassembly difficulty, this embodiment provides a louver filter that facilitates filter screen maintenance. It achieves dual dust prevention through a single belt filter screen without requiring filter screen removal, changing passive disassembly and cleaning to active cleaning, thus reducing the filter screen replacement cycle. Please refer to... Figures 1-10 This easy-to-maintain louvered filter includes a louvered frame 1, a winding box 2 fixed to the top wall of the louvered frame 1, and a water storage box 3 for cleaning the filter screen fixed to the bottom wall of the louvered frame 1. Both the winding box 2 and the water storage box 3 are rotatably connected to shafts 4. A belt filter screen 5 is fitted onto the two shafts 4. A flip motor 6 is installed on the winding box 2 to drive the rotation of its internal shafts 4. The belt filter screen 5 has an array of through-holes 7. The belt filter screen 5 also has an array of through-holes 7. A sliding cavity 8 is provided, which communicates with the filter hole 7. A slider 9 is slidably installed in the sliding cavity 8. A filter hole 10 is opened on the slider 9. Wind speed sensors 11 for monitoring the blockage of filter hole 7 are installed at both ends of the inner wall of the louver frame 1. The wind speed sensors 11 are located in the gap between the layers of the belt filter screen 5. A cleaning component 12 for washing and dust removal of the belt filter screen 5 is provided in the water storage box 3. A dust removal component 13 for sweeping and cleaning dust of the belt filter screen 5 is installed at the bottom of the winding box 2.

[0021] Both the bottom of the winding box 2 and the top of the water storage box 3 have slots adapted to the belt filter 5. The slider 9 is made of elastic metal material, and the diameter of the second filter hole 10 on the slider 9 is smaller than the diameter of the first filter hole 7. The belt filter 5 is used to intercept and filter external dust, and the bottom of the first filter hole 7 on the belt filter 5 is provided with a sliding cavity 8, and the slider 9 is set in the sliding cavity 8. Therefore, the side of the belt filter 5 facing the air inlet intercepts dust through the first filter hole 7, while the inner side of the belt filter 5... In the belt filter 5, under the influence of gravity, the slider 9 inside the sliding cavity 8 slides down, overlaps with the filter hole 7 on that surface, and blocks it. The smaller filter hole 10 on the slider 9 achieves the interception and filtration effect. Thus, the belt filter 5 achieves dual interception of external dust through the filter holes 7 and 10 on both sides with different apertures, improving the dust interception and filtration effect. Furthermore, a wind speed sensor 11 is installed in the interlayer gap of the belt filter 5. When the filter hole 7 on the side of the belt filter 5 facing the air inlet is blocked... When dust accumulates inside, the airflow through the filter hole 7 decreases. The wind speed sensor 11 detects the decrease in airflow and controls the flip motor 6 to start via the external central control unit, which in turn drives the rotating shaft 4 to rotate. This causes the belt filter 5 on the rotating shaft 4 to rotate and change its surface. During the surface change process, the outer surface of the belt filter 5 passes through the water storage box 3 and is cleaned by the cleaning component 12 to remove the large amount of dust intercepted on its surface, ensuring the cleanliness of the surface when it rotates to the inner side. When it rotates to the inner side, the slider moves under the action of gravity. 9 slides out from the sliding cavity 8 and overlaps with the filter hole 7 on the surface. The filter hole 10 on the slider 9 then performs secondary interception of dust. Meanwhile, the inner surface, which is also rotating, is swept and cleaned by the dust removal component 13 to ensure cleanliness when the surface rotates to the outer side. When it rotates to the air inlet side, under the action of gravity, the slider 9 slides back into the sliding cavity 8, allowing the filter hole 7 to leak out and intercept large particles of dust from the outside. This achieves a reciprocating cycle without the need for disassembly and cleaning.

[0022] Specifically, the cleaning assembly 12 includes a brush 121 rotatably connected to the water storage box 3, a cleaning motor 122 for driving the brush 121 to rotate mounted on the water storage box 3, a sealing box 123 fitted onto the belt filter 5 installed at the inner groove of the water storage box 3, elastic scrapers 124 fixed to the bottom sides of the sealing box 123 and attached to the belt filter 5, pressure springs 125 with their ends pressing against the elastic scrapers 124 installed at an angle on the inner wall of the sealing box 123, and a drying unit 126 for drying the cleaned belt filter 5 inside the sealing box 123; when the belt filter 5 When the rotating cleaning begins, the cleaning motor 122 is started synchronously by the main control unit, which drives the brush 121 to rotate, thereby brushing and removing the dust on the surface of the belt filter 5 passing through the water storage box 3. There is no need to disassemble the belt filter 5 for cleaning, making maintenance simpler and more intelligent. When the cleaned belt filter 5 continues to rotate upward, it passes between two elastic scrapers 124. The elastic scrapers 124 scrape away the water remaining on its surface, and the pressure spring 125 continuously provides pre-tension force, forcing the elastic scrapers 124 to always be in close contact with the surface of the belt filter 5, improving its water scraping effect.

[0023] Since the inner side of the belt filter 5 is subject to secondary interception of fine dust through the filter holes 10 on the slider 9, its surface will also be contaminated with dust. Therefore, the device is also equipped with a dust removal component 13. The dust removal component 13 includes a dust removal box 131 installed at the bottom of the winding box 2. Multiple long-bristled soft brushes 132 are vertically and equidistantly connected inside the dust removal box 131. An electrostatic adsorption plate 133 is installed on the inner wall of the dust removal box 131. A dust collection box 134 is installed at the bottom of the dust removal box 131.

[0024] There are two sets of dust removal components 13, located on opposite sides of the belt filter 5. The dust collection box 131 is open at the sides and bottom of the belt filter 5. The long-bristled soft brushes 132 in the two sets of dust removal components 13 are connected by a transmission component 135. When the belt filter 5 starts to rotate, the motor in the transmission component 135 is started by the main control unit, which drives the initial pulley to rotate. The transmission belts connected in series between the pulleys drive all the long-bristled soft brushes 132 to rotate, removing the dust adhering to the inner surface of the belt filter 5. Dust is swept off and captured and adsorbed by the high-voltage electric field formed by the energized electrostatic adsorption plate 133, preventing dust from scattering. After the belt filter 5 is cleaned and replaced, the power supply to the electrostatic adsorption plate 133 is stopped by the central control unit, and the motor in the transmission component 135 stops after a 20-second delay. The long-bristled soft brush 132, which is still rotating, sweeps the dust captured on the surface of the electrostatic adsorption plate 133 into the dust collection box 134, completing the dust collection. The dust collection box 134 can be removed periodically to empty the dust inside.

[0025] To prevent dust swept into the dust collection box 134 from being swept up by the airflow, anti-reverse plates 136 are symmetrically and inclinedly installed on the inner walls of both sides of the dust collection box 134. The swept dust slides along the surface of the anti-reverse plates 136 into the bottom of the dust collection box 134, and the two anti-reverse plates 136 prevent the dust at the bottom of the dust collection box 134 from being swept up and floated up again by the airflow.

[0026] Example 2 To prevent residual moisture from dripping from the surface of the belt filter 5, therefore, based on Example 1, as follows: Figures 1-10 As shown, the device is also equipped with a drying unit 126. The drying unit 126 includes an air supply plate 1261 fixed to the inner walls of both sides of the sealed box 123. An air outlet knife 1262 is provided on the air supply plate 1261. A dryer 1263 is installed in the mounting groove of the louver frame 1. An air inlet pipe 1264 extending into the air supply plate 1261 is installed at the air outlet of the dryer 1263.

[0027] The air outlet 1262 is a tapered structure with a wider inner side and a narrower outer side, set at an angle downwards. The elastic scraper 124 has a drainage groove extending into the water storage box 3. When the dryer 1263 is started, hot air is sent into the air supply plate 1261 through the air inlet pipe 1264 and blown out through the air outlet 1262 on the air supply plate 1261. This quickly dries the small amount of moisture remaining on the surface of the belt filter screen 5. Since the air outlet 1262 is a tapered structure with a wider inner side and a narrower outer side, it can blow the small amount of moisture downwards and let it flow back into the water storage box 3 through the drainage groove, thus preventing residual water from accumulating in the water storage box 3 and affecting the drying effect.

[0028] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A louvered filter with easy-to-maintain filter screen, comprising a louvered frame (1), characterized in that: The top wall of the louver frame (1) is fixed with a winding box (2), and the bottom wall of the louver frame (1) is fixed with a water storage box (3) for cleaning the filter screen. Both the winding box (2) and the water storage box (3) are rotatably connected with a rotating shaft (4). A belt filter screen (5) is sleeved on the two rotating shafts (4). A flip motor (6) is installed on the winding box (2) to drive the internal rotating shafts (4) to rotate. The belt filter screen (5) has a filter hole (7) arranged in an array. The belt filter screen (5) has a sliding hole arranged in an array that communicates with the filter hole (7). The moving cavity (8) and the sliding cavity (8) are equipped with a slider (9). The slider (9) has a filter hole (10). The inner walls of the louver frame (1) are equipped with wind speed sensors (11) to monitor the blockage of filter hole (7). The wind speed sensors (11) are located in the gap between the layers of the belt filter (5). The water storage box (3) is equipped with a cleaning component (12) for washing and dust removal of the belt filter (5). The bottom of the winding box (2) is equipped with a dust removal component (13) for sweeping and cleaning the belt filter (5).

2. The louvered filter with easy-to-maintain filter screen according to claim 1, characterized in that: The bottom of the winding box (2) and the top of the water storage box (3) are both provided with slots that are compatible with the belt filter screen (5). The slider (9) is made of elastic metal material, and the diameter of the second filter hole (10) on the slider (9) is smaller than the diameter of the first filter hole (7).

3. A louvered filter with an easy-to-maintain filter screen according to claim 1, characterized in that: The cleaning assembly (12) includes a brush (121) rotatably connected to a water storage box (3), a cleaning motor (122) for driving the brush (121) to rotate is installed on the water storage box (3), a sealing box (123) fitted onto a belt filter (5) is installed at the inner groove of the water storage box (3), elastic scrapers (124) attached to the belt filter (5) are fixed on both sides of the bottom of the sealing box (123), a pressure spring (125) with its end pressed against the elastic scraper (124) is installed obliquely on the inner wall of the sealing box (123), and a drying unit (126) for drying the cleaned belt filter (5) is provided inside the sealing box (123).

4. A louvered filter with an easy-to-maintain filter screen according to claim 3, characterized in that: The drying unit (126) includes an air supply plate (1261) fixed to the inner walls of both sides of the sealed box (123). An air outlet knife (1262) is provided on the air supply plate (1261). A dryer (1263) is installed in the mounting groove of the louver frame (1). An air inlet pipe (1264) extending into the air supply plate (1261) is installed at the air outlet of the dryer (1263).

5. A louvered filter with an easy-to-maintain filter screen according to claim 4, characterized in that: The air outlet (1262) is a tapered structure with an inner width and an outer width that is inclined downwards, and the elastic scraper (124) has a drainage groove that extends into the water storage box (3).

6. A louvered filter with an easy-to-maintain filter screen according to claim 1, characterized in that: The dust removal assembly (13) includes a dust removal box (131) installed at the bottom of the winding box (2), a number of long-bristled soft brushes (132) are vertically and equidistantly connected inside the dust removal box (131), an electrostatic adsorption plate (133) is installed on the inner wall of the dust removal box (131), and a dust collection box (134) is installed at the bottom of the dust removal box (131).

7. A louvered filter with an easy-to-maintain filter screen according to claim 6, characterized in that: There are two sets of dust removal components (13), and the two sets of dust removal components (13) are located on both sides of the belt filter (5). The dust removal box (131) is attached to the side and bottom of the belt filter (5) and has an open structure. The long-bristled soft brush (132) in the two sets of dust removal components (13) is connected by a transmission component (135).

8. A louvered filter with an easy-to-maintain filter screen according to claim 6, characterized in that: The dust collection box (134) has anti-reverse plates (136) installed symmetrically and obliquely on both sides of its inner wall.

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