Dust discharging structure for air cleaner

Abstract

This invention discloses a dust removal structure for an air filter, belonging to the field of air filters. The device includes a guide ring disposed inside a dust removal pipe, which collects dust that needs to be removed from inside the pipe. A slidable blocking cone is disposed inside the guide ring, which can contact the guide ring and block its dust removal channel. However, the surface of the blocking cone has a dust removal groove, allowing dust to slide along the groove towards the dust removal sleeve. After sliding, the dust removal groove contacts the propeller and is discharged along the curvature of the propeller surface. Because the propeller groove is located at the end of the dust removal groove, and its center of curvature is located near the dust removal sleeve, when dust inside the dust removal sleeve moves into the dust removal pipe under the vibration of the motor, it is first blocked by the propeller, making it difficult for the dust to enter the dust removal groove. Even if it does enter the dust removal groove, the curved surface of the blocking cone makes it difficult to push into the dust removal pipe under unstable forces.

Description

Technical Field

[0001] This invention relates to the field of air filters, and particularly to a dust removal structure for air filters. Background Technology

[0002] The air filter is a key component of the engine intake system. Its main function is to filter impurities such as dust, pollen, and sand from the air entering the engine, ensuring that the air entering the combustion chamber is clean.

[0003] The reference patent, titled "Air Filter" (Patent Publication No.: CN112682229B), describes an air filter consisting of a cylindrical body and a cover. The cover is located at the lower end of the cylindrical body and serves to support and position the filter element housed within it. The cylindrical body has an air inlet and an air outlet, while the cover has a dust discharge pipe. The outer end of the dust discharge pipe has a dust discharge sleeve with an opening. Initially, the opening of the dust discharge sleeve is closed. When the dust in the dust discharge sleeve and the dust discharge pipe reaches a predetermined weight, the opening of the dust discharge sleeve is opened to discharge some dust before automatically closing. Simultaneously, a baffle is installed inside the dust discharge pipe to reduce the flow path of the dust and prevent dust discharged into the dust discharge sleeve from returning to the cover under engine vibration, thus affecting the filtration effect.

[0004] However, the following problems exist when implementing the above technical solutions: it is difficult to ensure that dust will not flow back into the dust discharge sleeve when the engine is in use; the above devices restrict the flow path of dust by using baffles, which restricts dust from entering the cover from the dust discharge pipe and also restricts dust from entering the dust discharge sleeve from the cover, which will affect the overall dust discharge channel area of ​​the air filter, thereby prolonging the dust discharge time and reducing the dust discharge efficiency. Moreover, under certain engine vibration, dust inside the dust discharge sleeve may re-enter the cover through the channels on the surface of the baffles.

[0005] Therefore, the present invention proposes a dust removal structure for an air filter. Summary of the Invention

[0006] This invention provides a dust removal structure for an air filter, which can solve the problem in the prior art where baffles are set in the dust removal channel to restrict dust backflow, which affects dust discharge and makes it difficult to avoid dust backflow through the baffles under certain vibrations.

[0007] A dust removal structure for an air filter includes a dust removal cover detachably connected to a cylinder body. The dust removal cover has a one-way mechanism inside, the one-way mechanism comprising: A dust discharge pipe is fixedly installed inside the dust discharge cover, and a dust discharge sleeve is fixedly installed at the end of the dust discharge pipe; A guide ring is fixedly installed inside the dust discharge pipe. A fixing component is provided between the guide ring and the dust discharge pipe. A pushing ring is slidably connected inside the guide ring. A blocking cone is rotatably connected inside the pushing ring. The blocking cone is adapted to the guide ring. Several dust discharge grooves are opened on the surface of the blocking cone. Several propellers are fixedly connected to the surface of the blocking cone. The edges of the propellers are in contact with the edges of the dust discharge grooves, and the cross-sections of the propellers are all arc-shaped, with the center of curvature of the arc located on one side of the dust discharge sleeve.

[0008] Optionally, the depth of the dust discharge groove decreases in the direction from the dust discharge sleeve to the dust discharge cover.

[0009] Optionally, the dust exhaust sleeve includes a connecting pipe and an elastic ring, the connecting pipe and the elastic ring are fixedly connected, the connecting pipe is fixedly installed with the dust exhaust pipe, and the cross-section of the elastic ring is triangular.

[0010] Optionally, the fixing component includes a plurality of fixing rods fixedly disposed on the surface of the guide ring, the plurality of fixing rods being arranged in a circular array on the surface of the guide ring, a connecting ring being fixedly connected to the surface of the dust exhaust pipe, the surface of the connecting ring being provided with a plurality of fixing grooves, the fixing grooves being adapted to the fixing rods; a limit component is provided between the fixing grooves and the fixing rods.

[0011] Optionally, the cross-section of the fixing rod is L-shaped, and the fixing groove includes a rectangular groove and a limiting groove, wherein the cross-section of the limiting groove is L-shaped.

[0012] Optionally, the limiting component includes a limiting rod slidably disposed inside the fixed groove, and a limiting spring is fixedly connected between the limiting rod and the fixed groove; the limiting rod is arc-shaped towards the side facing the fixed rod.

[0013] Optionally, a connecting post is detachably connected to the surface of the guide ring, a connecting shaft is slidably connected inside the connecting post, the connecting shaft is detachably connected to the push ring, and a connecting spring is fixedly connected between the connecting post and the connecting shaft.

[0014] Optionally, both the connecting column and the connecting shaft are fixedly connected to a sliding shaft at their ends, and both the guide ring and the pushing ring have sliding grooves on their surfaces, with the sliding shaft being adapted to the sliding grooves.

[0015] Optionally, the cross-section of the sliding shaft is T-shaped, and the edge of the sliding groove coincides with the edge of the push ring.

[0016] Optionally, guide cones are fixedly connected to the surfaces of both the guide ring and the push ring, and the guide cones are in contact with the dust discharge pipe. The distance between the two guide cones is equal to the distance between the guide ring and the push ring.

[0017] This invention provides a dust removal structure for an air filter, including a guide ring disposed inside a dust removal pipe. The guide ring collects dust that needs to be removed from inside the dust removal pipe. A slidable blocking cone is disposed inside the guide ring, and the blocking cone can contact the guide ring and block its dust removal channel. However, the surface of the blocking cone is provided with a dust removal groove, and the dust can slide along the dust removal groove towards the dust removal sleeve. After sliding, the dust removal groove will contact the propeller and be discharged along the curvature of the propeller surface. Since the propeller groove is located at the end of the dust removal groove, and its center of curvature is located near the dust removal sleeve, when the dust is discharged... When dust inside the dust jacket moves downwards into the dust exhaust pipe under the vibration of the electric motor, it is first blocked by the propeller, making it difficult for the dust to enter the dust exhaust slot. Even if it does enter the dust exhaust slot, the dust exhaust slot has an arc on the surface of the blocking cone, making it difficult to rush into the dust exhaust pipe under the action of unstable force. Furthermore, under the obstruction of the propeller arc and the action of the blocking cone, dust and other impurities in the air entering the engine are difficult to flow back steadily into the dust exhaust pipe under the force of engine vibration, thus avoiding the return of dust and other impurities from affecting the performance of the air filter. Attached Figure Description

[0018] Figure 1 A schematic diagram of a dust removal structure for an air filter provided by the present invention; Figure 2 A three-dimensional structural view of the dust extraction pipe provided by the present invention; Figure 3 A three-dimensional view of the blocking cone provided by the present invention; Figure 4 An exploded view of the three-dimensional structure of the blocking cone provided by the present invention; Figure 5 Provided by the present invention Figure 4 Enlarged view of the local structure at point A in the middle.

[0019] Explanation of reference numerals in the attached figures: 1. Dust extraction cover; 21. Dust exhaust pipe; 22. Guide ring; 23. Pushing ring; 24. Blocking cone; 25. Dust exhaust trough; 26. Propeller; 27. Dust exhaust sleeve; 31. Fixing rod; 32. Connecting ring; 33. Fixing groove; 34. Limiting rod; 35. Limiting spring; 41. Connecting post; 42. Connecting shaft; 43. Connecting spring; 44. Sliding shaft; 45. Sliding groove; 46. Guide cone. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] like Figures 1 to 5As shown in the figure, an embodiment of the present invention provides a dust removal structure for an air filter, including a dust removal cover 1 detachably connected to a cylinder body. The cylinder body carries a filter element inside, and the dust removal cover 1 is provided with a one-way mechanism, the one-way mechanism including: A dust discharge pipe 21 is fixedly installed inside the dust discharge cover 1, and a dust discharge sleeve 27 is fixedly installed at the end of the dust discharge pipe 21; A guide ring 22 is fixedly installed inside the dust discharge pipe 21. A fixing component is provided between the guide ring 22 and the dust discharge pipe 21. A push ring 23 is slidably connected inside the guide ring 22. A blocking cone 24 is rotatably connected inside the push ring 23. The blocking cone 24 is adapted to the guide ring 22. A plurality of dust discharge grooves 25 are opened on the surface of the blocking cone 24. A plurality of propellers 26 are fixedly connected to the surface of the blocking cone 24. The edge of the propeller 26 contacts the edge of the dust discharge groove 25, and the cross-section of the propeller 26 is arc-shaped, with the center of curvature of the arc located on one side of the dust discharge sleeve 27. In summary, the dust removal structure for an air filter provided by this embodiment of the invention includes a guide ring 22 disposed inside a dust removal pipe 21. The guide ring 22 collects the dust that needs to be removed from inside the dust removal pipe 21. A slidable blocking cone 24 is disposed inside the guide ring 22, and the blocking cone 24 can contact the guide ring 22 and block its dust removal channel. However, a dust removal groove 25 is provided on the surface of the blocking cone 24, and the dust can slide along the dust removal groove 25 towards the dust removal sleeve. After sliding, the dust removal groove 25 will contact the propeller 26 and be discharged along the curvature of the surface of the propeller 26. Since the propeller groove is located at the end of the dust removal groove 25, and its center of curvature is located near the end of the dust removal groove 25, the dust removal groove 25 will contact the propeller 26 and be discharged along the curvature of the propeller 26. On one side of the dust exhaust sleeve 27, when the dust inside the dust exhaust sleeve 27 moves downward into the dust exhaust pipe 21 under the vibration of the electric motor, it will first be blocked by the propeller 26, making it difficult for the dust to enter the dust exhaust groove 25. Even if it does enter the dust exhaust groove 25, the dust exhaust groove 25 has an arc on the surface of the blocking cone 24, making it difficult to rush into the dust exhaust pipe 21 under the action of unstable force. Therefore, under the obstruction of the propeller arc and the action of the blocking cone 24, the dust and other impurities in the air entering the engine are difficult to flow back steadily into the dust exhaust pipe 21 under the action of the engine vibration, thus avoiding the return of dust and other impurities from affecting the performance of the air filter. In some specific implementations, the depth of the dust discharge groove 25 decreases continuously in the direction from the dust discharge sleeve 27 to the dust discharge cover 1; when the dust flows to the position near the dust discharge sleeve 27, the dust flow area increases due to the increased depth of the dust discharge groove 25, and the dust can be quickly discharged to the dust discharge sleeve 27; and because the depth of the dust discharge groove 25 decreases near the position of the dust discharge cover 1, there is resistance when the dust flows to the dust discharge cover 1, which further restricts the dust backflow. In some specific implementations, the dust exhaust sleeve 27 includes a connecting pipe and an elastic ring. The connecting pipe and the elastic ring are fixedly connected. The connecting pipe is fixedly installed with the dust exhaust pipe 21. The cross-section of the elastic ring is triangular. In the initial state, the end of the elastic ring is in a contact closed state. The elastic ring can be squeezed under the action of dust and other impurities, so that the elastic ring is in a ring shape and the dust and other impurities are discharged. In some specific implementations, the fixing component includes a plurality of fixing rods 31 fixedly disposed on the surface of the guide ring 22. The plurality of fixing rods 31 are arranged in a circular array on the surface of the guide ring 22. A connecting ring 32 is fixedly connected to the surface of the dust exhaust pipe 21. The surface of the connecting ring 32 is provided with a plurality of fixing grooves 33, which are adapted to the fixing rods 31. A limiting component is provided between the fixing grooves 33 and the fixing rods 31 to limit the position of the fixing rods 31. Through the fixing component, it can be ensured that the guide ring 22 is stably disposed inside the dust exhaust pipe 21 and will not shift due to engine vibration or other reasons during use, thus ensuring the stability and reliability of the entire dust exhaust structure. At the same time, after the position of the guide ring 22 is fixed, the positions of the pushing ring 23 and the blocking cone 24 inside it are also fixed, and they can be stably disposed inside the dust exhaust pipe 21. In a further embodiment, the cross-section of the fixing rod 31 is L-shaped, and the fixing groove 33 includes a rectangular groove and a limiting groove, the cross-section of the limiting groove being L-shaped; the fixing rod 31 is first inserted into the rectangular groove of the fixing groove 33, and then the guide ring 22 is rotated to insert the fixing rod 31 into the limiting groove, thereby restricting the fixing rod 31 from leaving the fixing groove 33, and thus limiting the position of the exhaust pipe and the guide ring 22. In a further embodiment, the limiting component includes a limiting rod 34 slidably disposed inside the fixing groove 33, and a limiting spring 35 is fixedly connected between the limiting rod 34 and the fixing groove 33; the limiting rod 34 is arc-shaped on the side facing the fixing rod 31; when the fixing rod 31 is inserted into the fixing groove 33, the sliding of the fixing rod 31 can push the limiting rod 34 to slide inside the dust discharge pipe 21; after the fixing rod 31 is fully inserted into the limiting groove, the limiting rod 34 will move under the action of the limiting spring 35, limiting the position of the fixing rod 31; In some specific implementations, a connecting post 41 is detachably connected to the surface of the guide ring 22, and a connecting shaft 42 is slidably connected inside the connecting post 41. The connecting shaft 42 is detachably connected to the push ring 23, and a connecting spring 43 is fixedly connected between the connecting post 41 and the connecting shaft 42. When there is a lot of dust on the surface of the blocking cone 24, the dust can push the blocking cone 24 to slide, thereby causing the connecting shaft 42 to slide inside the connecting post 41, causing the end of the connecting spring 43 to move. When the dust is completely removed from the blocking cone 24, the connecting shaft 42 can slide into the connecting post 41 under the action of the connecting spring 43, and block the guide ring 22 again. In a further embodiment, a sliding shaft 44 is fixedly connected to the ends of both the connecting column 41 and the connecting shaft 42. A sliding groove 45 is formed on the surface of both the guide ring 22 and the pushing ring 23, and the sliding shaft 44 is adapted to the sliding groove 45. The sliding shaft 44 has a T-shaped cross-section, and the edge of the sliding groove 45 coincides with the edge of the pushing ring 23. Through the adapted connection of the sliding shaft 44 and the sliding groove 45, the sliding process of the connecting shaft 42 inside the connecting column 41 is ensured to be more stable, avoiding deviation or jamming, thereby ensuring the smooth sliding of the blocking cone 24 under the push of dust and the subsequent automatic reset function. Simultaneously, the T-shaped cross-section of the sliding shaft 44 and the structure where the edge of the sliding groove 45 coincides with the edge of the pushing ring 23 further enhance the stability of the connection, effectively preventing the connecting parts from falling off or being damaged during use, and improving the durability and reliability of the entire dust removal structure. When the guide ring 22 is fixed inside the dust removal pipe 21, the end of the sliding groove 45 is closed, restricting the sliding of the sliding shaft 44. In some specific implementations, guide cones 46 are fixedly connected to the surfaces of both the guide ring 22 and the push ring 23. Each guide cone 46 contacts the dust exhaust pipe 21, and the distance between the two guide cones 46 is equal to the distance between the guide ring 22 and the push ring 23. By providing guide cones 46 that fit against the inner wall of the dust exhaust pipe 21 on the surfaces of the guide ring 22 and the push ring 23, dust and other impurities can be guided smoothly towards the blocking cone 24, preventing the accumulation of dust and other impurities at the edges of the guide ring 22 and the dust exhaust pipe 21. Since the distance between the two guide cones 46 is equal to the distance between the guide ring 22 and the push ring 23, the two guide cones 46 are located on opposite sides of the guide ring 22 and the push ring 23, ensuring that dust and other impurities are not subject to additional obstruction during flow and can smoothly pass through the dust exhaust structure, ensuring dust exhaust efficiency. In practical applications, this design can effectively reduce dust accumulation inside the air filter, extend the filter's service life, and maintain the cleanliness of the engine intake air, thereby improving the overall performance of the engine. Working principle of the invention: When dust and other impurities are thrown out of the air filter, the impurities first enter the dust discharge cover 1 and flow autonomously into the dust discharge pipe 21. The impurities first come into contact with the guide cone 46, and under the action of the guide cone 46, they slide down to the guide ring 22 and come into contact with the blocking cone 24. They then flow along the dust discharge groove 25 to the propeller 26 and are discharged into the dust discharge sleeve 27. After a certain amount of impurities accumulate inside the dust discharge sleeve 27, the dust discharge sleeve 27 is squeezed and the impurities are directly discharged.

[0022] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A dust removal structure for an air filter, characterized in that, Includes a dust discharge cover (1) detachably connected to the cylinder body, wherein the dust discharge cover (1) is provided with a one-way mechanism, the one-way mechanism comprising: A dust discharge pipe (21) is fixedly installed inside the dust discharge cover (1), and a dust discharge sleeve (27) is fixedly installed at the end of the dust discharge pipe (21). A guide ring (22) is fixedly installed inside the dust discharge pipe (21). A fixing component is provided between the guide ring (22) and the dust discharge pipe (21). A push ring (23) is slidably connected inside the guide ring (22). A blocking cone (24) is rotatably connected inside the push ring (23). The blocking cone (24) is adapted to the guide ring (22). Several dust discharge grooves (25) are opened on the surface of the blocking cone (24). Several propellers (26) are fixedly connected to the surface of the blocking cone (24). The edge of the propeller (26) contacts the edge of the dust discharge groove (25), and the cross-section of the propeller (26) is arc-shaped. The curvature center of the arc is located on one side of the dust discharge sleeve (27).

2. The dust removal structure for an air filter as described in claim 1, characterized in that, The depth of the dust discharge groove (25) decreases in the direction from the dust discharge sleeve (27) to the dust discharge cover (1).

3. The dust removal structure for an air filter as described in claim 1, characterized in that, The dust exhaust sleeve (27) includes a connecting pipe and an elastic ring. The connecting pipe and the elastic ring are fixedly connected. The connecting pipe is fixedly installed with the dust exhaust pipe (21). The cross-section of the elastic ring is triangular.

4. The dust removal structure for an air filter as described in claim 1, characterized in that, The fixing component includes several fixing rods (31) fixedly disposed on the surface of the guide ring (22). The fixing rods (31) are arranged in a ring array on the surface of the guide ring (22). A connecting ring (32) is fixedly connected to the surface of the dust exhaust pipe (21). Several fixing grooves (33) are opened on the surface of the connecting ring (32). The fixing grooves (33) are adapted to the fixing rods (31). A limit component is provided between the fixing grooves (33) and the fixing rods (31).

5. The dust removal structure for an air filter as described in claim 4, characterized in that, The cross-section of the fixing rod (31) is L-shaped, and the fixing groove (33) includes a rectangular groove and a limiting groove, the cross-section of the limiting groove being L-shaped.

6. The dust removal structure for an air filter as described in claim 4, characterized in that, The limiting component includes a limiting rod (34) that is slidably disposed inside the fixed groove (33), and a limiting spring (35) is fixedly connected between the limiting rod (34) and the fixed groove (33); the limiting rod (34) is arc-shaped on the side facing the fixed rod (31).

7. The dust removal structure for an air filter as described in claim 1, characterized in that, The guide ring (22) is detachably connected to a connecting post (41), and a connecting shaft (42) is slidably connected inside the connecting post (41). The connecting shaft (42) is detachably connected to the push ring (23), and a connecting spring (43) is fixedly connected between the connecting post (41) and the connecting shaft (42).

8. The dust removal structure for an air filter as described in claim 7, characterized in that, The ends of the connecting column (41) and the connecting shaft (42) are fixedly connected to the sliding shaft (44), and the surfaces of the guide ring (22) and the push ring (23) are provided with sliding grooves (45), and the sliding shaft (44) is adapted to the sliding grooves (45).

9. The dust removal structure for an air filter as described in claim 8, characterized in that, The cross-section of the sliding shaft (44) is T-shaped, and the edge of the end of the sliding groove (45) coincides with the edge of the push ring (23).

10. The dust removal structure for an air filter as described in claim 1, characterized in that, The guide ring (22) and the push ring (23) are both fixedly connected with guide cones (46), and the guide cones (46) are in contact with the dust discharge pipe (21). The distance between the two guide cones (46) is equal to the distance between the guide ring (22) and the push ring (23).

Images