Air filter for small diesel engine

Abstract

The utility model relates to the technical field of filters, in particular to an air filter for a small diesel engine, which comprises a bottom plate and a base, the base is fixedly connected to the upper surface of the bottom plate, and a groove arranged in the base is in clearance fit with the outer wall of a first bump. When air enters the shell, the air blows fan blades and drives the fan blades to rotate, the fan blades drive a rotating rod to rotate, the rotating rod drives an eccentric wheel to rotate, the eccentric wheel drives a first sliding rod to slide, the first sliding rod drives a hemispherical block to move, and the hemispherical block makes contact with a first filter element to knock during movement; the two hemispherical blocks alternately knock the first filter element, the first filter element vibrates, dust and impurities adhering to the inner wall or the outer wall of the first filter element are separated from the first filter element and fall into the first material receiving disc or the second material receiving disc under the action of gravity, the hemispherical blocks knock the first filter element, and cleaning of the first filter element is achieved. Therefore, the filter element does not need to be cleaned frequently, and the cleaning frequency of the filter element is low.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to an air filter for a small diesel engine. Background Technology

[0002] The diesel engine was invented in 1892 by the German inventor Rudolf Diesel. To commemorate this inventor, diesel fuel is named after his surname, Diesel, and the diesel engine is also called the Diesel engine. Diesel engines obtain energy by burning diesel fuel and have the advantages of high power and good economic performance.

[0003] Small diesel engines are widely used in daily life. When using a small diesel engine, an air filter filters the air entering the engine. While filtering dust and impurities from the air entering the engine, the dust and impurities can clog the filter element inside. When the filter element is clogged, it will affect the normal operation of the air filter, so the filter element needs to be cleaned frequently. In addition, traditional air filter bases are connected and fixed to the housing with many bolts. When it is necessary to clean or replace the internal filter element, the base must be disassembled from the housing, which is cumbersome and inconvenient for cleaning or replacing the internal filter element. Utility Model Content

[0004] The purpose of this invention is to solve the problem of high frequency of filter element cleaning, and to propose an air filter for small diesel engines.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design an air filter for a small diesel engine, including a base plate and a base. The base is fixed to the upper surface of the base plate. A groove in the base is clearance-fitted with the outer wall of a first protrusion. The first protrusion is fixed to the lower part of a housing. A striking mechanism is provided inside the housing. A connecting mechanism is provided outside the housing. A second protrusion, a third protrusion, and a fourth protrusion are fixed to the upper surface of the base.

[0007] Preferably, the striking mechanism includes a connecting rod, the upper end of which is fixedly connected to the housing, and the lower end of which is fixedly connected to a first bracket. The interior of the first bracket is rotatably connected to a rotating rod via a bearing. The upper end of the rotating rod is fixedly connected to a fan blade, and the lower end of the rotating rod is fixedly connected to an eccentric wheel. The outer wall of the eccentric wheel is in contact with two first sliding rods, and the outer wall of the first sliding rod is slidably connected to the first bracket. A hemispherical block is fixedly connected to the end of the first sliding rod, and a first spring is sleeved on the outer wall of the first sliding rod. The two ends of the first spring are fixedly connected to the first bracket and the first sliding rod, respectively.

[0008] Preferably, the connecting mechanism includes a vertical rod, the outer wall of the end of the vertical rod is rotatably connected to the housing via a pin, the outer wall of the vertical rod is rotatably connected to the second bracket via a pin, the second bracket is slidably connected to a second slide rod inside, the outer wall of the second slide rod is sleeved with a second spring, the two ends of the second spring are respectively fixedly connected to the second bracket and the second slide rod, the end of the second slide rod is fixedly connected to a U-shaped frame, the U-shaped frame is engaged with a bent rod, and the bent rod is fixed to the outer wall of the base.

[0009] Preferably, the outer wall of the third protrusion is in clearance fit with the groove provided in the first filter element, the outer wall of the fourth protrusion is in clearance fit with the groove provided in the second filter element, the second filter element is disposed outside the first filter element, and the outer wall of the second protrusion is in clearance fit with the groove provided in the first receiving tray.

[0010] Preferably, both the first filter element and the second filter element are fitted with the outer wall of the second receiving tray with a clearance.

[0011] Preferably, both the base plate and the base are fixedly connected to the outer wall of the pipe.

[0012] Preferably, the inner wall of the housing is fixedly connected with a first ring and a second ring, the first ring is disposed outside the second ring, the first ring is attached to the upper end of the second filter element, and the second ring is attached to the upper end of the first filter element.

[0013] Preferably, an umbrella-shaped block is fixed to the top of the housing via a connecting rod.

[0014] The present invention discloses an air filter for a small diesel engine, the advantages of which are as follows: through the cooperation of connecting rod, first bracket, rotating rod, fan blade, eccentric wheel, first sliding rod, hemispherical block and first spring, when air enters the housing, the air blows the fan blade and drives the fan blade to rotate. The fan blade drives the rotating rod to rotate, the rotating rod drives the eccentric wheel to rotate, the eccentric wheel drives the first sliding rod to slide, the first sliding rod drives the hemispherical block to move, and the hemispherical block contacts and strikes the first filter element during movement. The two hemispherical blocks alternately strike the first filter element, and the first filter element itself vibrates. Dust and impurities adhering to the inner or outer wall of the first filter element are separated from the first filter element and fall into the first or second receiving tray under the action of gravity. The hemispherical block strikes the first filter element to clean it, so the filter element does not need to be cleaned frequently, resulting in a low frequency of filter element cleaning.

[0015] By coordinating the vertical rod, the second support, the second slide rod, the second spring, the U-shaped frame, and the bent rod, rotating the vertical rods on both sides drives the second support to move, which in turn drives the second slide rod to move. The slide rod then moves the U-shaped frame, allowing it to be removed from the bent rod. Pulling the housing upwards separates the housing from the base, allowing the first and second filter elements to be removed for cleaning or replacement. The U-shaped frame is then fitted onto the outer wall of the bent rod, and the vertical rod is rotated in the opposite direction, causing the vertical rod to move the second support. The second slide rod slides inside the second support, compressing the second spring. Under the elastic action of the second spring, the second slide rod has an upward force, which in turn causes the U-shaped frame to have an upward force. The U-shaped frame and the bent rod work together to connect the base to the housing, completing the cleaning or replacement of the first and second filter elements. The operation is relatively simple and facilitates the cleaning or replacement of the internal filter elements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the connection between the shell, the first ring, and the second ring in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the connection between the bottom plate, the shell, and the second protrusion in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the second receiving tray in this utility model;

[0021] Figure 6 This is a schematic diagram of the structure at the connection between the connecting rod, the first support, and the fan blade in this utility model;

[0022] Figure 7 This is a schematic diagram of the connection between the vertical rod, the second bracket, and the second sliding rod in this utility model.

[0023] In the diagram: 1. Base plate, 2. Base, 3. Striking mechanism, 301. Connecting rod, 302. First support, 303. Rotating rod, 304. Fan blade, 305. Eccentric wheel, 306. First sliding rod, 307. Hemispherical block, 308. First spring, 4. Connecting mechanism, 401. Vertical rod, 402. Second support, 403. Second sliding rod, 404. Second spring, 405. U-shaped frame, 406. Bent rod, 5. First protrusion, 6. Housing, 7. Second protrusion, 8. Third protrusion, 9. Fourth protrusion, 10. First filter element, 11. Second filter element, 12. First receiving tray, 13. Second receiving tray, 14. Pipe, 15. First ring, 16. Second ring, 17. Umbrella block. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] See attached document Figure 1-7 In this embodiment, an air filter for a small diesel engine includes a base plate 1 and a base 2. The base 2 is fixed to the upper surface of the base plate 1. A groove in the base 2 is clearance-fitted with the outer wall of a first protrusion 5, allowing the first protrusion 5 to be inserted into the groove in the base 2. The first protrusion 5 is fixed to the lower part of a housing 6. A sealing ring is provided at the connection position between the housing 6 and the base 2 to increase the sealing between the housing 6 and the base 2. A striking mechanism 3 is provided inside the housing 6 to strike the first filter element 10, causing the first filter element 10 to vibrate and separate dust and impurities from the first filter element 10, thus cleaning the first filter element 10. A connecting mechanism 4 is provided outside the housing 6 to connect the housing 6 and the base 2. A second protrusion 7, a third protrusion 8, and a fourth protrusion 9 are fixed to the upper surface of the base 2, with two of each of the third protrusion 8 and the fourth protrusion 9.

[0026] The outer wall of the third protrusion 8 is fitted with a groove in the first filter element 10, thus limiting the position of the first filter element 10. The outer wall of the fourth protrusion 9 is fitted with a groove in the second filter element 11, thus limiting the position of the second filter element 11. The second filter element 11 is located outside the first filter element 10, and the size of the holes in the second filter element 11 is smaller than the size of the holes in the first filter element 10. The outer wall of the second protrusion 7 is fitted with a groove in the first receiving tray 12, thus limiting the position of the first receiving tray 12. The outer wall of the first receiving tray 12 is fitted with the first filter element 10. Both filter element 10 and filter element 11 are fitted with the outer wall of the second receiving tray 13 with clearance. The second receiving tray 13 is an annular receiving tray. The base plate 1 and base 2 are fixedly connected to the outer wall of the pipe 14. The pipe 14 facilitates air passage. The inner wall of the housing 6 is fixedly connected with a first ring 15 and a second ring 16. The first ring 15 is located outside the second ring 16. The first ring 15 is in contact with the upper end of the second filter element 11 and squeezes the second filter element 11. The second ring 16 is in contact with the upper end of the first filter element 10 and squeezes the first filter element 10. An umbrella-shaped block 17 is fixedly connected to the top of the housing 6 through a connecting rod. The inside of the housing 6 is provided with a through hole to facilitate air passage. The umbrella-shaped block 17 prevents rainwater from entering the inside of the housing 6 through the through hole provided inside the housing 6.

[0027] The striking mechanism 3 includes a connecting rod 301, a first support 302, a rotating rod 303, a fan blade 304, an eccentric wheel 305, a first sliding rod 306, a hemispherical block 307, and a first spring 308. The upper end of the connecting rod 301 is fixedly connected to the housing 6. Two connecting rods 301 are provided, and the housing 6 supports and fixes the positions of the two connecting rods 301. The lower end of the connecting rod 301 is fixedly connected to the first support 302, which supports and fixes the first support 302. The rotating rod 303 is rotatably connected to the interior of the first support 302 via a bearing. The upper end of the rotating rod 303 is fixedly connected to the fan blade 304, which drives the rotating rod 303 to rotate. When air flows, air blows the fan blade 304 to rotate. The lower end of the rotating rod 303 is fixedly connected to the eccentric wheel 305, which drives the eccentric wheel 306 to rotate. When the eccentric wheel 305 rotates, the outer wall of the eccentric wheel 305 is in contact with the two first slide rods 306. The eccentric wheel 305 drives the two first slide rods 306 to move. The outer wall of the first slide rod 306 is slidably connected to the first support 302. The first slide rod 306 slides inside the first support 302. A hemispherical block 307 is fixedly connected to the end of the first slide rod 306. The first slide rod 306 drives the hemispherical block 307 to move. A first spring 308 is sleeved on the outer wall of the first slide rod 306. Under the elastic action, the first spring 308 can drive the first slide rod 306 to slide. Under the elastic action, the first spring 308 keeps the first slide rod 306 in contact with the outer wall of the eccentric wheel 305. The two ends of the first spring 308 are fixedly connected to the first support 302 and the first slide rod 306 respectively.

[0028] When air enters the interior of the housing 6, it blows the fan blades 304 and drives them to rotate. The fan blades 304 drive the rotating rod 303 to rotate, which in turn drives the eccentric wheel 305 to rotate. The eccentric wheel 305 drives the first sliding rod 306 to slide, and the first sliding rod 306 drives the hemispherical block 307 to move. When the hemispherical block 307 moves, it contacts and strikes the first filter element 10. The two hemispherical blocks 307 alternately strike the first filter element 10, causing the first filter element 10 to vibrate. Dust and impurities adhering to the inner or outer wall of the first filter element 10 are separated from the first filter element 10 and fall into the interior of the first receiving tray 12 or the second receiving tray 13 under the action of gravity. The hemispherical blocks 307 strike the first filter element 10, thus cleaning the first filter element 10. Therefore, the filter element does not need to be cleaned frequently, resulting in a low frequency of filter element cleaning.

[0029] The connecting mechanism 4 includes a vertical rod 401, a second bracket 402, a second slide rod 403, a second spring 404, a U-shaped frame 405, and a bent rod 406. The outer wall of the end of the vertical rod 401 is rotatably connected to the housing 6 via a pin. The outer wall of the vertical rod 401 is rotatably connected to the second bracket 402 via a pin. The vertical rod 401 drives the second bracket 402 to move. The second slide rod 403 is slidably connected inside the second bracket 402. The second slide rod 403 slides inside the second bracket 402, and the second bracket 402 drives the second slide rod 403 to move. A second spring 404 is sleeved on the outer wall of the second slide rod 403. The two ends of the second spring 404 are fixedly connected to the second bracket 402 and the second slide rod 403 respectively. Under the elastic action, the second spring 404 can drive the second slide rod 403 to move. A loop frame 405 is fixedly connected to the end of the second slide rod 403. The second slide rod 403 and the loop frame 405 move together. The loop frame 405 is engaged with the bent rod 406. The engagement of the loop frame 405 and the bent rod 406 connects the base 2 and the housing 6. The bent rod 406 is fixed to the outer wall of the base 2.

[0030] Rotate the vertical rods 401 on both sides. The vertical rods 401 drive the second bracket 402 to move. The second bracket 402 drives the second slide rod 403 to move. The slide rod 403 drives the U-shaped frame 405 to move. Remove the U-shaped frame 405 from the bent rod 406. Pull the housing 6 upward. The housing 6 separates from the base 2. Remove the first filter element 10 and the second filter element 11 for cleaning or replacement. Fit the U-shaped frame 405 onto the outer wall of the bent rod 406. Rotate the vertical rod 401 in the opposite direction. The vertical rod 401 drives the second... When the bracket 402 moves, the second slide rod 403 slides inside the second bracket 402 and compresses the second spring 404. Under the elastic action of the second spring 404, the second slide rod 403 has an upward force, which in turn gives the loop frame 405 an upward force. The loop frame 405 cooperates with the bent rod 406 to connect the base 2 and the housing 6, thus completing the cleaning or replacement of the first filter element 10 and the second filter element 11. The operation is relatively simple and facilitates the cleaning or replacement of the internal filter elements.

[0031] Working principle:

[0032] When using an air filter for a small diesel engine, place the base plate 1 on the small diesel engine at the desired installation position, and use bolts to fix the base plate 1 to the small diesel engine through the through holes inside the base plate 1, thereby fixing the air filter to the small diesel engine.

[0033] Air filter operating stages:

[0034] Outside air enters the interior of housing 6 through the through-holes. The first filter element 10 performs preliminary filtration of dust and impurities, and the second filter element 11 further filters them. The filtered air then enters the small diesel engine through pipe 14 for its use. As the air enters the housing 6, it blows and drives the fan blades 304 to rotate. The fan blades 304 drive the rotating rod 303 to rotate, which in turn drives the eccentric wheel 305 to rotate. The eccentric wheel 305 drives the first sliding rod 306 to slide, which in turn moves the hemispherical block 307. 7. During movement, the two hemispherical blocks 307 alternately strike the first filter element 10, causing the first filter element 10 to vibrate. Dust and impurities adhering to the inner or outer wall of the first filter element 10 are separated from the first filter element 10 and fall into the first receiving tray 12 or the second receiving tray 13 under the action of gravity. The hemispherical blocks 307 strike the first filter element 10 to clean it. Therefore, the filter element does not need to be cleaned frequently, resulting in a low frequency of filter element cleaning. After the air is filtered once, it comes into contact with the second filter element 11. The amount of dust and impurities is already very small, so the second filter element 11 is not easy to become clogged.

[0035] Filter cleaning or replacement stage:

[0036] When the filter element needs cleaning or replacement, rotate the vertical rods 401 on both sides. The vertical rods 401 drive the second bracket 402 to move, the second bracket 402 drives the second slide rod 403 to move, and the slide rod 403 drives the U-shaped frame 405 to move. Remove the U-shaped frame 405 from the bent rod 406, pull the housing 6 upward, and the housing 6 separates from the base 2. Remove the first filter element 10 and the second filter element 11 for cleaning or replacement. (The knocking mechanism 3 has limited cleaning effect on the first filter element 10.) (The disassembly and cleaning of filter element 10 and second filter element 11 are relatively effective). Remove the first receiving tray 12 and second receiving tray 13 to clean the internal dust and impurities. After cleaning, fit the groove in the first receiving tray 12 onto the outer wall of the second protrusion 7. Fit the two grooves in the first filter element 10 onto the outer walls of the corresponding two third protrusions 8. Fit the second receiving tray 13 onto the outer wall of the first filter element 10, ensuring the lower surface of the second receiving tray 13 is flush with the base 2. Then, fit the second... Two grooves inside the filter element 11 are fitted onto the outer walls of the corresponding two fourth protrusions 9. The housing 6 is then fastened above the base 2. The two first protrusions 5 are inserted into the corresponding grooves inside the base 2. The first ring 15 contacts the second filter element 11 to position it. The second ring 16 contacts the first filter element 10 to position it. The loop frame 405 is fitted onto the outer wall of the bent rod 406. The vertical rod 401 is rotated in the opposite direction, causing the second support 402 to move. The second slide rod 403 slides inside the second support 402 and compresses the second spring 404. Under the elastic action of the second spring 404, the second slide rod 403 has an upward force, which in turn causes the loop frame 405 to have an upward force. The loop frame 405 and the bent rod 406 work together to connect the base 2 and the housing 6, completing the cleaning or replacement of the first filter element 10 and the second filter element 11. The operation is relatively simple and facilitates the cleaning or replacement of the internal filter elements.

[0037] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. An air filter for a small diesel engine, comprising a base plate (1) and a base (2), wherein the base (2) is fixedly connected to the upper surface of the base plate (1), characterized in that: The groove provided in the base (2) is clearance-fitted with the outer wall of the first protrusion (5). The first protrusion (5) is fixedly connected to the bottom of the housing (6). The inside of the housing (6) is provided with a striking mechanism (3). The outside of the housing (6) is provided with a connecting mechanism (4). The upper surface of the base (2) is fixedly connected with a second protrusion (7), a third protrusion (8) and a fourth protrusion (9). The striking mechanism (3) includes a connecting rod (301), the upper end of which is fixedly connected to the housing (6), and the lower end of which is fixedly connected to a first bracket (302). The interior of the first bracket (302) is rotatably connected to a rotating rod (303) via a bearing. The upper end of the rotating rod (303) is fixedly connected to a fan blade (304), and the lower end of the rotating rod (303) is fixedly connected to an eccentric wheel (305). The outer wall of the eccentric wheel (305) is in contact with two first sliding rods (306). The outer wall of the first sliding rod (306) is slidably connected to the first bracket (302). The end of the first sliding rod (306) is fixedly connected to a hemispherical block (307), and the outer wall of the first sliding rod (306) is sleeved with a first spring (308). The two ends of the first spring (308) are fixedly connected to the first bracket (302) and the first sliding rod (306) respectively.

2. An air filter for a small diesel engine according to claim 1, characterized in that: The connecting mechanism (4) includes a vertical rod (401). The outer wall of the end of the vertical rod (401) is rotatably connected to the housing (6) by a pin. The outer wall of the vertical rod (401) is rotatably connected to the second bracket (402) by a pin. The second bracket (402) is slidably connected to a second slide rod (403). The outer wall of the second slide rod (403) is fitted with a second spring (404). The two ends of the second spring (404) are fixedly connected to the second bracket (402) and the second slide rod (403) respectively. The end of the second slide rod (403) is fixedly connected to a loop frame (405). The loop frame (405) is engaged with a bent rod (406). The bent rod (406) is fixed to the outer wall of the base (2).

3. An air filter for a small diesel engine according to claim 1, characterized in that: The outer wall of the third protrusion (8) is in clearance fit with the groove provided in the first filter element (10), the outer wall of the fourth protrusion (9) is in clearance fit with the groove provided in the second filter element (11), the second filter element (11) is located outside the first filter element (10), and the outer wall of the second protrusion (7) is in clearance fit with the groove provided in the first receiving tray (12).

4. An air filter for a small diesel engine according to claim 3, characterized in that: The first filter element (10) and the second filter element (11) are both fitted with the outer wall of the second receiving tray (13) with a clearance.

5. An air filter for a small diesel engine according to claim 1, characterized in that: Both the base plate (1) and the base (2) are fixedly connected to the outer wall of the pipe (14).

6. An air filter for a small diesel engine according to claim 1, characterized in that: The inner wall of the housing (6) is fixed with a first ring (15) and a second ring (16). The first ring (15) is disposed outside the second ring (16). The first ring (15) is attached to the upper end of the second filter element (11), and the second ring (16) is attached to the upper end of the first filter element (10).

7. An air filter for a small diesel engine according to claim 1, characterized in that: An umbrella-shaped block (17) is fixed to the top of the housing (6) via a connecting rod.

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