Dust filtering device of ventilation pipeline

Abstract

The utility model discloses a dust filtering device of a ventilation pipeline, and relates to the technical field of ventilation pipeline dust filtering, the dust filtering device comprises a pipe body and slide rails arranged on two sides of the inner wall of the pipe body, the slide rails are obliquely arranged in the pipe body, the inner walls of the slide rails are provided with limiting grooves, and the interiors of the slide rails are slidably connected with filter plates; the side, close to the limiting groove, of the top of the filter plate is provided with a boss matched with and slidably connected with the limiting groove, the side, close to the bottom of the filter plate, of the pipe body is provided with a penetrating groove, the bottom of the penetrating groove is covered with the limiting plate slidably connected with the pipe body, and the side, away from the filter plate, of the limiting plate is provided with a limiting clamping block clamped with the pipe body. When the filter plates need to be cleaned, the filter plates can be drawn out along the through grooves through the sliding rails, the filter plates cannot be completely separated from the sliding rails under the action of the bosses, the filter plates are perpendicularly hung on the outer side of the pipe body so that an operator can conveniently clean the filter plates, the overall structure is simple, the pipe body is always kept complete in the cleaning process, and large-range disassembly work does not need to be conducted.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct dust filtration technology, and in particular to a dust filtration device for ventilation ducts. Background Technology

[0002] Ventilation mainly involves absorbing outside air and transporting it through ventilation ducts to deliver fresh air into the indoor environment. However, outside air contains a certain amount of dust, which will enter the ventilation ducts along with the air. Some of this dust will accumulate inside the ducts, while the rest will be discharged directly to the outside, causing indoor environmental pollution.

[0003] Dust filters are typically installed inside ventilation ducts to prevent dust from being expelled with the air. Most existing dust filters consist of multiple components combined into a single unit. During use, they are directly installed into the ventilation duct through both ends. They offer good dust filtration and a long service life. However, after a certain period of use, the dust filter needs to be cleaned to ensure that the dust filtration effect does not decrease and the ventilation effect is not affected. This process requires disassembling the dust filter and sending it to a professional for cleaning. The maintenance cost is high, the cleaning time is long, and the installation and disassembly are quite cumbersome. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the purpose of this utility model is to solve the following problems: most existing dust filtration devices are directly connected to ventilation ducts, requiring professional personnel to participate in maintenance, cleaning, installation, and disassembly. Furthermore, ventilation ducts are disconnected after the dust filtration device is removed, making it impossible to continue ventilation.

[0005] To solve the problems of the prior art, the technical solution of this utility model is as follows: it includes a tube body and slide rails disposed on both sides of the inner wall of the tube body. The slide rails are inclinedly disposed inside the tube body. A limiting groove is opened in the inner wall of the slide rail. A filter plate is slidably connected inside the slide rail. A boss that is adapted to and slidably connected to the limiting groove is provided on the top side of the filter plate near the limiting groove. A through groove is opened on the side of the tube body near the bottom of the filter plate. A limiting plate that is slidably connected to the tube body is covered at the bottom of the through groove. A limiting block that engages with the tube body is provided on the side of the limiting plate away from the filter plate.

[0006] Furthermore, the two ends of the slide rail are located at the top and bottom of the inner wall of the tube, respectively, and the bottom of the slide rail is located at the top of the through groove. The limiting groove on the inner wall of the slide rail is aligned with the vertical direction of the through groove, so that the filter plate can directly pass through the through groove and move to the outside of the through groove via the slide rail.

[0007] Furthermore, the slide rail is tilted towards the exhaust direction of the pipe body, and the tilt angle of the slide rail and the filter plate is greater than 30 degrees and less than 45 degrees, which increases the area of ​​the filter plate inside the pipe body, and the condensate on the surface of the filter plate can slide down along the tilt direction, extending the service life of the filter plate.

[0008] Furthermore, the filter plate includes a rectangular frame around its perimeter and filter media inside the frame. The frame contacts the slide rail and the tube body respectively. An auxiliary handle extending to the outside of the groove is provided at the bottom of the frame. The operator can move the filter plate along the slide rail using the auxiliary handle.

[0009] Furthermore, the limiting plate is connected to the tube body via the rails on both sides of the tube body, and a groove adapted to the auxiliary handle is provided on the side of the limiting plate near the filter plate. After the limiting plate is fixed in position by the limiting block, the groove adapted to the auxiliary handle can limit the position of the auxiliary handle, and the filter plate is prevented from moving under non-human operation by fixing the auxiliary handle.

[0010] Furthermore, the groove has a vertical surface on one side near the filter plate and an inclined surface on the other side. The angle of the inclined surface is the same as the angle of the filter plate, which ensures that the filter plate can move smoothly and can be kept in contact with the inclined surface during the reset process, simplifying the operation steps.

[0011] Compared with the prior art, the advantages of this utility model are as follows:

[0012] This invention features an inclined slide rail inside a tube, with a filter plate positioned inside the slide rail. The inclined filter plate traps and filters dust as air passes through, causing the dust to remain on its surface or inside. The dust on the surface slides off the inclined surface under the influence of subsequent airflow, exposing the filter plate and restoring it to a dust-free state, thus extending its service life. When cleaning is required, the filter plate can be pulled out along the slide rail through a groove. The filter plate is not completely detached from the slide rail due to the presence of a boss, allowing it to hang vertically outside the tube for easy cleaning by the operator. The overall structure is simple, and the tube remains intact during cleaning, eliminating the need for extensive disassembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional view of the tube body of this utility model.

[0015] Figure 3 This is an enlarged schematic diagram of the boss structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the limiting plate structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the filter plate of this utility model in a vertically extended state.

[0018] Reference numerals in the attached drawings: 1. Pipe body; 2. Slide rail; 3. Restriction groove; 4. Filter plate; 5. Boss; 6. Through groove; 7. Restriction plate; 8. Limiting block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] like Figure 1-4 As shown, a dust filtration device for a ventilation duct includes a pipe body 1 and slide rails 2 disposed on both sides of the inner wall of the pipe body 1. The slide rails 2 are inclined inside the pipe body 1, and a limiting groove 3 is provided on the inner wall of the slide rails 2. A filter plate 4 is slidably connected inside the slide rails 2. The inclined direction of the slide rails 2 is towards the exhaust direction of the pipe body 1, and the inclination angle of the slide rails 2 and the filter plate 4 is greater than 30 degrees and less than 45 degrees, which increases the area of ​​the filter plate 4 inside the pipe body 1, and the dust on the surface of the filter plate 4 can slide down along the inclined direction, thus extending the service life of the filter plate 4.

[0021] The top of the filter plate 4 is provided with a boss 5 that is adapted to and slidably connected to the limiting groove 3 on the side near the top of the filter plate 4. The tube body 1 is provided with a through groove 6 on the side near the bottom of the filter plate 4. The through groove 6 is provided with a vertical surface on the side near the filter plate 4 and an inclined surface on the other side. The angle of the inclined surface is the same as the inclination angle of the filter plate 4, which ensures that the filter plate 4 can move smoothly and can be kept in contact with the inclined surface during the reset process, simplifying the operation steps. The filter plate 4 includes a rectangular frame around the perimeter and filter media inside the frame. The frame is in contact with the slide rail 2 and the tube body 1 respectively. An auxiliary handle extending to the outside of the through groove 6 is provided at the bottom of the frame. The operator can move the filter plate 4 along the slide rail 2 through the auxiliary handle.

[0022] The bottom of the groove 6 is covered with a limiting plate 7 that is slidably connected to the tube body 1. The limiting plate 7 is connected to the tube body 1 through the locking rails on both sides of the tube body 1. The limiting plate 7 has a groove that matches the auxiliary handle on the side closer to the filter plate 4. After the limiting plate 7 is fixed in position by locking the tube body 1 through the limiting block 8, the groove that matches the auxiliary handle can limit the position of the auxiliary handle. By fixing the auxiliary handle, the filter plate 4 is prevented from moving under non-human operation. The limiting plate 7 is provided with a limiting block 8 that matches the tube body 1 on the side away from the filter plate 4.

[0023] Working principle description: First, during use, the filter plate 4 is inclinedly set inside the tube body 1 via the slide rail 2. When air passes through the filter plate 4, it blocks and filters the dust. The dust that remains on the surface slides down along the inclined surface of the filter plate 4 under the blowing of subsequent air, exposing the surface of the filter plate 4.

[0024] After prolonged use, the operator can rotate the limit block 8 to disconnect the connection between the limiting plate 7 and the pipe body 1. Then, the operator can slide the limiting plate 7 to expose the through groove 6. The operator can then pull out the filter plate 4 along the through groove 6 using the auxiliary handle at the bottom of the filter plate 4. As the filter plate 4 moves within the slide rail 2, the protrusions 5 on both sides of the top of the filter plate 4 move along with the filter plate 4 within the limiting groove 3 of the slide rail 2 until the protrusions 5 on both sides of the top of the filter plate 4 move to the bottom end of the limiting groove 3. At this point, the filter plate 4 is no longer restricted by the slide rail 2 and is only connected to the slide rail 2 by the protrusions 5 and the limiting groove 3. The operator can rotate the filter plate 4 along the protrusions 5 to make the filter plate 4 perpendicular to the pipe body 1 and can rotate the filter plate 4 within the opening range of the through groove 6 for cleaning.

[0025] After cleaning, push the filter plate 4 to fit the inclined surface of the groove 6, so that the filter plate 4 is tilted to match the angle of the slide rail 2. Then push the filter plate 4 into the slide rail 2. When the filter plate 4 is completely inside the tube body 1, push the limiting plate 7 to reset and rotate the limiting block 8 so that the limiting plate 7 is engaged with the tube body 1 and the position of the limiting plate 7 is fixed. The limiting plate 7 is also abutted against the auxiliary handle at the bottom of the filter plate 4 through the inner wall of the groove to prevent the filter plate 4 from being displaced without human intervention.

[0026] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust filtration device for a ventilation duct, comprising a duct body (1) and slide rails (2) disposed on both sides of the inner wall of the duct body (1), characterized in that: The slide rail (2) is inclined inside the tube body (1). A limiting groove (3) is provided on the inner wall of the slide rail (2). A filter plate (4) is slidably connected inside the slide rail (2). A boss (5) that is adapted to and slidably connected to the limiting groove (3) is provided on the top side of the filter plate (4). A through groove (6) is provided on the side of the tube body (1) near the bottom of the filter plate (4). A limiting plate (7) that is slidably connected to the tube body (1) is covered at the bottom of the through groove (6). A limiting block (8) that is engaged with the tube body (1) is provided on the side of the limiting plate (7) away from the filter plate (4).

2. The dust filtration device for a ventilation duct according to claim 1, characterized in that: The two ends of the slide rail (2) are located at the top and bottom of the inner wall of the tube (1), respectively, and the bottom of the slide rail (2) is located at the top of the through groove (6). The limiting groove (3) of the inner wall of the slide rail (2) is aligned with the through groove (6) in the vertical direction.

3. The dust filtration device for a ventilation duct according to claim 1, characterized in that: The slide rail (2) is tilted in the direction of exhaust towards the pipe body (1), and the tilt angle of the slide rail (2) and the filter plate (4) is greater than 30 degrees and less than 45 degrees.

4. A dust filtration device for a ventilation duct according to claim 1, characterized in that: The filter plate (4) includes a rectangular frame around the perimeter and filter material inside the frame. The frame contacts the slide rail (2) and the tube (1) respectively. An auxiliary handle extending to the outside of the groove (6) is provided at the bottom of the frame.

5. A dust filtration device for a ventilation duct according to claim 4, characterized in that: The limiting plate (7) is connected to the tube body (1) via the rails on both sides of the tube body (1), and the limiting plate (7) has a groove on the side near the filter plate (4) that is adapted to the auxiliary handle.

6. A dust filtration device for a ventilation duct according to claim 1, characterized in that: The groove (6) has a vertical surface on one side near the filter plate (4) and an inclined surface on the other side. The angle of the inclined surface is the same as the angle of the inclined surface of the filter plate (4).

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