A gas filter

Abstract

The application provides a gas filter, which is arranged on a tubular shell and comprises a filter layer, a rotating brush, a first telescopic rod, a first sealing assembly, a second sealing assembly, a discharge pipe and a storage tank, the filter layer is arranged in the tubular shell; the rotating brush is arranged to rotate in the tubular shell and is used for cleaning the air inlet side of the filter layer, the first sealing assembly and the second sealing assembly are arranged in the tubular shell and are located on the two sides of the filter layer respectively and are used for closing or opening the tubular shell, the first telescopic rod is fixedly arranged in the discharge pipe and is coaxial with the tubular shell, and the first telescopic rod is used for driving the first sealing assembly to switch between the closed state and the opened state and enabling the first sealing assembly to slide in the tubular shell. The application solves the problem that the filter layer needs to be frequently replaced after being blocked by impurities, and reduces the working strength of workers.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and more particularly to a gas filter. Background Technology

[0002] A gas filter is a device that uses porous filter materials to capture dust from a gas-solid two-phase flow, purifying the gas. It delivers purified air with low dust content into the room to ensure the process requirements of clean rooms and the air cleanliness of general air-conditioned rooms. In existing technology, the filter layer is generally designed as a removable structure, requiring cleaning or replacement when it fails or its filtration efficiency weakens. When the gas contains a high amount of particulate matter or other impurities, the filter layer becomes rapidly clogged, increasing the frequency of filter replacement and workload. Therefore, optimization of existing gas filters is necessary. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention provides a gas filter that solves the problem that the filter layer of the gas that processes a large amount of particulate matter needs to be replaced frequently after it becomes clogged.

[0004] According to an embodiment of the present invention, a gas filter includes a tubular housing. Inside the tubular housing are disposed a filter layer, a rotating brush, a first telescopic rod, a first sealing assembly, and a second sealing assembly. It also includes a discharge pipe and a storage tank communicating with the tubular housing. The rotating brush is rotatably disposed inside the tubular housing to clean the air inlet side of the filter layer. The first and second sealing assemblies are located on opposite sides of the filter layer and are used to seal or open the tubular housing. The first telescopic rod is fixedly disposed inside the tubular housing and coaxial with it. The first telescopic rod is used to drive the first sealing assembly to switch between closed and open states and to allow the first sealing assembly to slide within the tubular housing. The first telescopic rod is also used to drive the rotating brush to rotate. The discharge pipe is disposed on the tubular housing on the side away from the filter layer from the rotating brush, and a valve is provided on the discharge pipe.

[0005] The technical principle of this invention is as follows: When it is necessary to clean the impurities on the air inlet side of the filter layer, the second sealing component is in a closed state, the first telescopic rod extends to close the first sealing component, and when it continues to extend, it pushes the first sealing component to slide along the tubular shell, and air passes through the filter layer in the opposite direction. At the same time, the rotating brush rotates to brush the impurities off from the side of the filter layer, and the detached impurities are discharged from the discharge pipe, thereby cleaning the impurities blocking the air inlet side of the filter layer and avoiding the need to frequently remove the filter layer.

[0006] Preferably, the first sealing assembly includes a first baffle, a second baffle, a support rod, and a movable rod. The movable rod and the first telescopic rod are coaxially and slidably disposed inside the tubular housing. A sliding hole is provided at the end of the movable rod, and the end of the first telescopic rod is slidably engaged with the sliding hole. Both ends of the support rod are fixedly connected to the inner wall of the tubular housing, and a connecting ring is fixedly disposed in the middle of the support rod. The connecting ring is slidably connected to the movable rod. The first baffle is adapted to and slidably disposed inside the tubular housing. The first baffle is fixedly connected to the movable rod, and the second baffle is fixedly connected to the movable section of the first telescopic rod. Air vents are respectively provided on the first baffle and the second baffle at staggered positions. A gap is provided between the ends of the second baffle and the movable section of the first telescopic rod, and the length of the gap is less than the depth of the sliding hole.

[0007] Preferably, the second sealing assembly includes a second telescopic rod, a third telescopic rod, a first sealing plate, and a second sealing plate. The first and second sealing plates are slidably connected to the two side walls of the tubular housing, respectively, and the sliding direction is perpendicular to the axis of the tubular housing. The second and third telescopic rods are coaxial and fixedly disposed on both sides of the tubular housing. The second and third telescopic rods are used to control the first and second sealing plates to close or open the tubular housing. The tubular housing is provided with a sealing strip for sealing the sliding connection.

[0008] Preferably, a plurality of support rods are provided, and the support rods are provided on both sides of the filter layer.

[0009] Preferably, the rotating brush includes a circular frame, an inner ring, and a plurality of brush strips. The inner ring and the circular frame are disposed inside the circular frame. The brush strips are evenly arranged around the inner ring and are fixedly connected to the inner ring. The brush strips abut against the filter layer. The circular frame is rotatably connected to the inner wall of the tubular shell. The movable rod passes through the inner ring and is threadedly connected to the inner ring.

[0010] Preferably, the end of the discharge pipe and the storage tank are detachably connected.

[0011] Preferably, an arc-shaped groove is provided in the middle of the adjacent side of the first sealing plate and the second sealing plate, and the arc-shaped groove engages with both sides of the movable rod.

[0012] Preferably, a storage box is provided at the end of the discharge pipe, an exhaust port is provided on the side wall of the storage box, and a filter cloth is provided on the exhaust port.

[0013] Preferably, a support frame is provided inside the filter layer.

[0014] Preferably, the movable section of the first telescopic rod is provided with a limiting groove, the end of the limiting groove is in a closed state, and the end of the movable rod is fixedly provided with a limiting member that is slidably connected to the limiting groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention has a simple structure. The extension and retraction of the first telescopic rod causes the gas inside the tubular shell to flow backward. The gas passes through the filter layer in the reverse direction, blowing away some of the impurities stuck on the filter screen. At the same time, the rotating brush rotates to clean the filter screen. The bristles of the rotating brush carry away the impurities remaining on the side of the filter screen, thereby cleaning the impurities that affect the filtration effect of the filter layer, increasing the total time of air filtration by the filter layer, reducing the frequency of filter layer replacement by the staff, and reducing labor intensity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a schematic diagram showing the connection between the first telescopic rod and the movable rod of the present invention.

[0018] Figure 3 This is a schematic diagram of the installation of the first sealing plate and the second sealing plate of the present invention.

[0019] Figure 4 This is a schematic diagram showing the connection between the movable rod and the first telescopic rod of the present invention.

[0020] Figure 5 This is a schematic diagram of the air passage holes on the first and second baffles of the present invention.

[0021] Figure 6 This is a schematic diagram of the rotating brush structure of the present invention.

[0022] In the above figures: 1. Tubular shell; 2. First telescopic rod; 3. Support rod; 4. First baffle; 5. Second baffle; 6. Movable rod; 7. Second telescopic rod; 8. Third telescopic rod; 9. First sealing plate; 10. Second sealing plate; 12. Filter layer; 13. Rotating brush; 14. Discharge pipe; 15. Storage box; 16. Sliding hole; 17. Sealing frame; 18. Bracket; 19. Limiting component; 20. Limiting groove; 21. Circular frame; 22. Brush strip; 23. Air outlet; 24. Inner ring; 25. Connecting ring; 26. Arc-shaped groove. Detailed Implementation

[0023] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 , 2As shown in the figure, an embodiment of the present invention proposes a gas filter, including a tubular housing 1. The tubular housing 1 contains a filter layer 12, a rotating brush 13, a first telescopic rod 2, a first sealing assembly, and a second sealing assembly. It also includes an outlet pipe 14 and a storage tank 15 communicating with the tubular housing 1. The filter layer 12 is fixedly disposed within the tubular housing 1. The rotating brush 13 is rotatably disposed within the tubular housing 1 to clean the air inlet side of the filter layer 12. The bristles of the rotating brush 13 contact the side surface of the filter layer 12. The first sealing assembly and the second sealing assembly are respectively disposed within the tubular housing 1 and located on both sides of the filter layer 12, serving to seal or open the tubular housing 1. The first telescopic rod 2 is fixedly disposed within the tubular housing 1 and coaxial with it. A bracket 18 is provided between the first telescopic rod 2 and the tubular housing 1 for fixed connection, ensuring that the first telescopic rod 2 remains stationary within the tubular housing 1. The first telescopic rod 2 is used to drive the first sealing assembly to switch between closed and open states and to allow the first sealing assembly to slide within the tubular housing 1. The first telescopic rod 2 is also used to drive the rotating brush 13 to rotate. The discharge pipe 14 is located on the tubular housing 1 on the side of the rotating brush 13 away from the filter layer 12, and a valve is provided on the discharge pipe 14. When it is necessary to clean particulate matter on one side of the filter layer 12, the first sealing assembly and the second sealing assembly are in a closed state, and the valve on the discharge pipe 14 is opened.

[0025] like Figure 1 , 2 As shown in Figure 4, preferably, the first sealing assembly includes a first baffle 4, a second baffle 5, a support rod 3, and a movable rod 6. The movable rod 6 and the first telescopic rod 2 are coaxially and slidably disposed inside the tubular housing 1. A sliding hole 16 is provided at the end of the movable rod 6, and the end of the first telescopic rod 2 is slidably engaged with the sliding hole 16. The cross-section of the sliding hole 16 is rectangular. Both ends of the support rod 3 are fixedly connected to the inner wall of the tubular housing 1, and a connecting ring 25 is fixedly disposed in the middle of the support rod 3. The connecting ring 25 is slidably connected to the movable rod 6. The first baffle 4 is adapted to and slidably disposed inside the tubular housing 1. The first baffle 4 and the tubular housing 1 are clearance-fitted. The first baffle 4 and the movable rod 6 are fixedly connected. The second baffle 5 is fixedly connected to the movable section of the first telescopic rod 2. The first baffle 4 and the second baffle 5 are respectively provided with staggered air passages 23. A gap is provided between the end of the movable section of the second baffle 5 and the first telescopic rod 2, and the length of the gap is less than the depth of the sliding hole 16. In this embodiment, the movable rod 6 is a cylindrical structure with an annular groove on its outer wall. The support rod 3 has a sliding through hole, and a limit key is fixedly installed inside the sliding through hole. The limit key and the groove slide together to prevent the movable rod 6 from rotating.

[0026] When the air filter is working normally, the first telescopic rod 2 is in the retracted state. There is a gap between the first baffle 4 and the second baffle 5. After the air passes through the filter layer 12, it passes through the air outlets 23 on the first baffle 4 and the second baffle 5 in sequence. When it is necessary to clean the particles attached to one side of the filter layer 12, the first telescopic rod 2 extends. First, the end of the movable section slides along the sliding hole 16, and the adjacent sides of the first baffle 4 and the second baffle 5 are put together, so that the tubular shell 1 is blocked. Then it continues to extend. When the first baffle 4 and the second baffle 5 slide, they will push the air to pass through the filter layer 12 in the opposite direction, blowing the particles off the filter layer 12 in the opposite direction.

[0027] like Figure 1 , 3 As shown, preferably, the second sealing assembly includes a second telescopic rod 7, a third telescopic rod 8, a first sealing plate 9, and a second sealing plate 10. The first sealing plate 9 and the second sealing plate 10 are both semi-circular plates. The first sealing plate 9 and the second sealing plate 10 are slidably connected to the two side walls of the tubular housing 1, respectively. The second telescopic rod 7 and the third telescopic rod 8 are coaxially and fixedly disposed on both sides of the tubular housing 1. The second telescopic rod 7 and the third telescopic rod 8 are used to control the first sealing plate 9 and the second sealing plate 10 to close or open the tubular housing 1. The tubular housing 1 is provided with a sealing strip for sealing the sliding connection. When the first sealing assembly is in the closed state, the first sealing assembly slides inside the tubular housing 1. To prevent particles from moving in the opposite direction towards the air inlet end of the tubular housing 1, the second telescopic rod 7 and the third telescopic rod 8 respectively drive the first sealing plate 9 and the second sealing plate 10 to close, sealing the tubular housing 1. This allows the first sealing assembly to blow the particles carried by the gas towards the discharge pipe 14, and the valve on the discharge pipe 14 is in the open state. A sealing frame 17 is provided on the tubular housing 1, so that when the first sealing plate 9 and the second sealing plate 10 slide relative to each other to contact, the first sealing plate 9, the second sealing plate 10 and the tubular housing 1 are in a sealed connection state.

[0028] As a preferred option, such as Figure 1 Several support rods 3 are provided, and the support rods 3 are arranged on both sides of the filter layer 12. The support rods 3 support both ends of the movable rod 6 to prevent the movable rod 6 from shifting and affecting the normal movement of the structure.

[0029] like Figure 6As shown, preferably, the rotating brush 13 includes a circular frame 21, an inner ring 24, and several brush strips 22. The inner ring 24 is coaxial with the circular frame 21 and is disposed inside the circular frame 21. The brush strips 22 are evenly arranged around the inner ring 24, and both ends of the brush strips 22 are fixedly connected to the circular frame 21 and the inner ring 24, respectively. The brush strips 22 abut against the filter layer 12, and the circular frame 21 is rotatably connected to the inner wall of the tubular housing 1. The movable rod 6 passes through the inner ring 24 and is threadedly connected to the inner ring 24. The movable rod 6 is provided with an external thread, and the inner ring 24 has a through threaded hole in the middle. The external thread and the threaded hole are adapted to each other. When the movable rod 6 moves, it can drive the rotating brush 13 to rotate. In this embodiment, the inner wall of the tubular housing 1 is provided with a rotating groove for the circular frame 21 to rotate, and the circular frame 21 and the rotating groove are slidably fitted. The brush strips 22 include a rigid fixed rod and a row of bristles fixed on the fixed rod. The movable rod 6 and the fixed rod are threadedly connected at the middle.

[0030] Preferably, the end of the discharge pipe 14 and the storage tank 15 are detachably connected, so that the discharged particles are disposed of after the rotating brush 13 has cleaned several times. This eliminates the need for frequent cleaning of the particles in the storage tank 15.

[0031] As a preferred option, such as Figure 3 The first sealing plate 9 and the second sealing plate 10 each have an arc-shaped groove 26 in the middle of their adjacent sides. The arc-shaped groove 26 engages with both sides of the movable rod 6. When the second sealing assembly approaches the rotating brush 13, to avoid affecting the axial movement of the movable rod 6, the first sealing plate 9 and the second sealing plate 10 are closed, allowing the movable rod 6 to move axially normally, thus ensuring the rotation of the rotating brush 13.

[0032] Preferably, a storage tank 15 is provided at the end of the discharge pipe 14, and an exhaust port is provided on the side wall of the storage tank 15, with a filter cloth provided on the exhaust port. When air carrying particulate matter enters the storage tank 15, the air is discharged through the filter cloth, preventing the air from flowing back into the tubular housing 1.

[0033] Preferably, a support frame is provided inside the filter layer 12 to prevent the filter layer 12 from becoming concave in the middle after long-term use, and to ensure normal contact between the rotating brush 13 and the filter layer 12.

[0034] like Figure 4As shown, preferably, the movable section of the first telescopic rod 2 is provided with a limiting groove 20, the end of the limiting groove 20 is in a closed state, and the end of the movable rod 6 is fixedly provided with a limiting member 19 that is slidably connected to the limiting groove 20. When the movable section of the first telescopic rod 2 begins to retract, the movable section exits from the sliding hole 16, and the limiting member 19 slides along the limiting groove 20. After the limiting member 19 slides to one end of the limiting groove 20, it abuts against the side wall of the limiting groove 20 to prevent the movable section from separating from the movable rod 6. Then, the movable section drives the movable rod 6 to move axially.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A gas filter, characterized in that: The system includes a tubular housing (1), inside which are disposed a filter layer (12), a rotating brush (13), a first telescopic rod (2), a first sealing assembly, and a second sealing assembly. It also includes a discharge pipe (14) and a storage tank (15) communicating with the tubular housing (1). The rotating brush (13) is rotatably disposed inside the tubular housing (1) to clean the air inlet side of the filter layer (12). The first and second sealing assemblies are located on both sides of the filter layer (12) and are used to seal or open the tubular housing (1). The first telescopic rod (2) is fixedly disposed inside the tubular housing (1) and coaxial with it. The first telescopic rod (2) is used to drive the first sealing assembly to switch between closed and open states and to allow the first sealing assembly to slide within the tubular housing (1). The first telescopic rod (2) is also used to drive the rotating brush (13) to rotate. The discharge pipe (14) is disposed on the tubular housing (1) at a position away from the filter layer (12) from the rotating brush (13). On one side, a valve is provided on the discharge pipe (14); the first sealing assembly includes a first baffle (4), a second baffle (5), a support rod (3), and a movable rod (6). The movable rod (6) and the first telescopic rod (2) are coaxially and slidably disposed inside the tubular shell (1). A sliding hole (16) is provided at the end of the movable rod (6), and the end of the first telescopic rod (2) is slidably engaged with the sliding hole (16); both ends of the support rod (3) are fixedly connected to the inner wall of the tubular shell (1). Connecting ring (25) is fixedly provided in the middle of the support rod (3), and the connecting ring (25) and the movable rod (6) are slidably connected; the first baffle (4) and the tubular shell (1) are adapted to and slidably provided inside the tubular shell (1), the first baffle (4) and the movable rod (6) are fixedly connected, the second baffle (5) and the movable section of the first telescopic rod (2) are fixedly connected, and the first baffle (4) and the second baffle (5) are respectively provided with air ports (23) in staggered positions.

2. A gas filter as described in claim 1, characterized in that: The movable ends of the second baffle (5) and the first telescopic rod (2) are provided with a gap, the length of which is less than the depth of the sliding hole (16).

3. A gas filter as described in claim 2, characterized in that: The second sealing assembly includes a second telescopic rod (7), a third telescopic rod (8), a first sealing plate (9), and a second sealing plate (10). The first sealing plate (9) and the second sealing plate (10) are slidably connected to the two side walls of the tubular housing (1), and the sliding direction is perpendicular to the axis of the tubular housing (1). The second telescopic rod (7) and the third telescopic rod (8) are coaxial and fixedly arranged on both sides of the tubular housing (1). The second telescopic rod (7) and the third telescopic rod are used to control the first sealing plate (9) and the second sealing plate (10) to close or open the tubular housing (1). The tubular housing (1) is provided with a sealing strip for sealing the sliding connection.

4. A gas filter as described in claim 3, characterized in that: The support rods (3) are provided in a plurality of manner, and the support rods (3) are provided on both sides of the filter layer (12).

5. A gas filter as described in claim 4, characterized in that: The rotating brush (13) includes a circular frame (21), an inner ring (24), and several brush strips (22). The inner ring (24) and the circular frame (21) are coaxial and disposed inside the circular frame (21). The brush strips (22) are evenly arranged around the inner ring (24). The two ends of the brush strips (22) are fixedly connected to the circular frame (21) and the inner ring (24) respectively. The brush strips (22) abut against the filter layer (12). The circular frame (21) is rotatably connected to the inner wall of the tubular shell (1). The movable rod (6) passes through the inner ring (24) and is threadedly connected to the inner ring (24).

6. A gas filter as described in claim 1, characterized in that: The end of the discharge pipe (14) and the storage box (15) are detachably connected.

7. A gas filter as described in claim 3, characterized in that: The first sealing plate (9) and the second sealing plate (10) are each provided with an arc-shaped groove (26) in the middle of one side of their adjacent sides. The arc-shaped groove (26) engages with both sides of the movable rod (6).

8. A gas filter as described in claim 1, characterized in that: The storage box (15) has an exhaust port on its side wall, and a filter cloth is provided on the exhaust port.

9. A gas filter as described in claim 1, characterized in that: A support frame is provided inside the filter layer (12).

10. A gas filter as described in claim 2, characterized in that: The movable section of the first telescopic rod (2) is provided with a limiting groove (20), the end of the limiting groove (20) is in a closed state, and the end of the movable rod (6) is fixedly provided with a limiting member (19) that is slidably connected to the limiting groove (20).

Images