Air inlet device of engine

Abstract

The invention relates to an air inlet device of an engine, which relates to the technical field of engines and comprises a fixing part, a filtering device and a cleaning device, the fixing part is fixed to an air inlet pipe of an engine. The filtering device comprises two supporting frames, the two supporting frames are sequentially arranged in the gas flowing direction, the supporting frames and the fixing part are detachably connected, and filter screens are arranged in the supporting frames; the cleaning device is mounted between the two filter screens and comprises a mounting pipe and a mounting rod, the mounting pipe slides in the vertical direction and is rotationally connected with the fixing part, and the mounting rod penetrates through the mounting pipe and elastically slides along the mounting pipe; a plurality of beating assemblies are arranged on the mounting rod in the long edge direction, each beating assembly comprises an elastic rod and a beating hammer, the two ends of each elastic rod are connected with the corresponding beating hammer and the mounting rod, and the beating hammers abut against the filter screen.

Description

Technical Field

[0001] The present application relates to the technical field of engines, and in particular to an air intake device of an engine. Background Art

[0002] With the continuous development of my country's aviation industry, the engine field has also made great progress. As an important component of modern aircraft, the engine will inhale a large amount of air during operation, cooperate with combustion, and generate a large amount of energy to propel the aircraft to fly and complete corresponding tasks.

[0003] In the related technology, the air intake device of the engine is usually composed of an intake pipe and a diverter pipe. An air filter is provided in the intake pipe. The diverter pipe is connected to each combustion chamber. The gas enters the diverter pipe after passing through the intake pipe, and is diverted by the diverter pipe and enters each combustion chamber to be burned with the fuel, thus realizing the gas intake operation and enabling the engine to work normally.

[0004] With regard to the above-mentioned related technologies, after a period of use, a large amount of dust will accumulate on the surface of the air filter, which will seriously affect the working state of the filter and further affect the air intake effect of the engine. Repeated replacement will increase the cost. Summary of the invention

[0005] In order to clean the filter element in time and ensure the stability of the intake air, the present application provides an intake device for an engine.

[0006] The present application provides an air intake device for an engine, which adopts the following technical solution: An air intake device for an engine comprises a fixing part, a filtering device and a cleaning device; the fixing part is fixed to an air intake pipe of the engine; The filtering device comprises two support frames, the two support frames are arranged in sequence along the axial direction of the engine intake pipe, the support frames and the fixing part are detachably connected, and a filter screen is arranged inside the support frames; The cleaning device is installed between the two filter screens, and comprises a mounting tube and a mounting rod, wherein the mounting tube slides in a vertical direction, and the mounting tube is rotatably connected to the fixing portion, and the mounting rod is passed through the mounting tube and elastically slides along the mounting tube; The installation rod is provided with a plurality of striking components along the long side direction. The striking components include an elastic rod and a striking hammer. Both ends of the elastic rod are connected to the striking hammer and the installation rod. The striking hammer abuts against the filter screen.

[0007] By adopting the above technical solution, the filters set in the two support frames can effectively filter out impurities and particulate matter in the air entering the engine, protecting the engine from damage. The detachable connection design between the support frame and the fixed part allows users to easily remove and replace the filter. The striking assembly can automatically clean the filter through the vertical sliding and rotating connection of the mounting tube and the elastic sliding of the mounting rod along the mounting tube; this design reduces the frequency of manual cleaning and improves the cleaning efficiency. The design of the elastic rod enables the striking hammer to generate a certain impact force when it contacts the filter, effectively removing stubborn impurities and particulate matter attached to the filter, and maintaining the cleanliness and filtration efficiency of the filter. This solution has the advantages of high-efficiency filtration, easy maintenance and replacement, automatic cleaning function, good striking cleaning effect and strong adaptability.

[0008] Optionally, the mounting tube is provided with a mounting block, the mounting block slides in a vertical direction, and the mounting tube and the mounting block are rotatably connected; The support frame is provided with a through slot, and each support frame is equipped with a cross bar, which passes through the through slot, and the cross bar is fixedly connected to the mounting block. Scraping pieces are provided on both sides of the filter, and the scraping pieces abut against the filter and are elastically hinged to the cross bar.

[0009] By adopting the above technical solution, the flexibility of the cleaning device, such as the mounting tube, the mounting rod and the striking assembly, is maintained, and support is provided for the installation of the scraper blade, so that the scraper blade can flexibly adjust its position according to the shape and vibration of the filter screen during the cleaning process, thereby more effectively scraping off impurities and particulate matter attached to the filter screen. The elastic hinged design also allows the scraper blade to automatically adjust its angle when encountering resistance, thereby avoiding excessive wear or damage to the filter screen and extending the service life of the filter screen.

[0010] Optionally, a placement groove is provided at the bottom of the fixed part, the filtering device is provided with a collection box in the placement groove, the support frame is located inside the collection box, and baffles are provided on the end surfaces of the support frame that are away from each other, the baffles are rotatably connected to the fixed part, and the baffles abut against the support frame.

[0011] By adopting the above technical solution, the collection box arranged in the placement groove can effectively collect impurities and particulate matter fallen from the filter, so that the user can easily remove and clean these impurities. The presence of the baffle ensures that the impurities are effectively confined inside the collection box, thereby maintaining the cleanliness and efficient operation of the intake system.

[0012] Optionally, a push rod is provided at the bottom of the cross bar, the push rod abuts against the baffle plate and is used to drive the baffle plate to rotate along the fixed portion.

[0013] By adopting the above technical solution, the design of the push rod can automatically drive the baffle to rotate along the fixed part during the cleaning process, making it easier for it to fall off the filter and fall into the collection box below, while preventing the baffle from rotating to cause impurities in the collection box to overflow.

[0014] Optionally, the inner cavity of the mounting tube is coaxially fixedly connected with a positioning ring, and the positioning ring has tightening members evenly distributed circumferentially, and the tightening members include a guide block and an abutment block, the guide block and the positioning ring are fixedly connected, the abutment block is fixedly connected to the mounting rod, and the abutment block is always in contact with the guide block and / or the positioning ring.

[0015] By adopting the above technical solution, the positioning ring is coaxially fixedly connected to the inner cavity of the mounting tube, providing a stable support point for the mounting rod. The fitting design of the guide block and the abutment block makes the mounting rod slide more smoothly in the mounting tube, reducing friction and resistance, and at the same time drives the mounting rod to slide elastically along the mounting tube, so that the striking hammer can strike different positions of the filter to complete the cleaning operation.

[0016] Optionally, the mounting rod is provided with a second spring, and two ends of the second spring are fixedly connected to the mounting rod and the mounting tube respectively.

[0017] By adopting the above technical solution, the second spring as an elastic element can provide a continuous elastic reset force for the mounting rod, and the connection between the mounting rod and the mounting tube is tighter and more stable, preventing loosening or damage caused by vibration or impact during the cleaning process.

[0018] Optionally, the mounting block is provided with a screw rod, the screw rod is rotatably connected to the fixing portion, and the mounting block is threadedly connected to the screw rod; The cleaning device also includes a gear and a rack, the gear and the mounting tube are coaxially fixedly connected, the rack and the fixing part are fixedly connected, and the gear and the rack are meshed.

[0019] By adopting the above technical solution, through the adjustment of the screw, the user can firmly fix the cleaning device in the desired position. This stability helps to reduce the displacement or shaking caused by vibration or impact during the cleaning process, thereby improving the accuracy and efficiency of cleaning. The setting of the gear rack can make the mounting tube rotate, thereby driving the mounting rod to slide back and forth along the mounting tube to perform dust cleaning operations on different positions of the filter.

[0020] Optionally, the fixed part is provided with a spoiler device on a side close to the front end of the air inlet, the spoiler device includes an adjustment component and a plurality of spoilers, the adjustment component includes a chain, the chain is rotatably connected to the fixed part, the spoilers are arranged sequentially along the vertical direction, one end of the spoiler is rotatably connected to the fixed part, and the other end is connected to the chain.

[0021] By adopting the above technical solution, the presence of the spoiler can effectively change and guide the direction and speed of the airflow, making the airflow entering the air inlet more uniform and stable; this helps to reduce the direct impact of the airflow on the filter, thereby extending the service life of the filter and adapting to different working environments and air intake requirements, while optimizing the airflow distribution and helping to reduce air resistance.

[0022] Optionally, the spoiler is equipped with a support shaft, a support rod and a support tube, one end of the support shaft is fixedly connected to the spoiler, and the other end is rotatably connected to the fixed part, the support rod is rotatably connected to the spoiler, the support tube is sleeved on the support rod and slides along the axial direction of the support rod, and the support tube is rotatably connected to the chain.

[0023] By adopting the above technical solution, one end of the support shaft is fixedly connected to the spoiler, and the other end is rotatably connected to the fixed part. This design allows the spoiler to remain stable during rotation and is not prone to shaking or deformation. The user can change the angle and height of the spoiler by adjusting the position of the chain, thereby driving the position of the support tube on the support rod, thereby adapting to different working environments and air intake requirements.

[0024] Optionally, a sealing ring is sandwiched between the fixing portion and the engine air intake pipe.

[0025] By adopting the above technical solution, the main function of the sealing ring is to ensure that the connection between the fixed part and the engine intake pipe has good sealing, which can prevent external air, dust, moisture and other impurities from entering the intake system through the connection gap, thereby keeping the intake system clean and dry and preventing gas leakage.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up the filtering device and the cleaning device, it has the advantages of high-efficiency filtration, easy maintenance and replacement, automatic cleaning function, good knocking cleaning effect and strong adaptability, which ensures that the filter is in a relatively clean state, which is of great significance for improving engine performance and extending service life; 2. By setting up the placement groove, collection box and baffles on the end surface of the support frame, impurities can be collected and cleaned conveniently, and impurities can be prevented from overflowing, which is convenient for operators to clean regularly; 3. By setting up a spoiler, it is possible to optimize air flow distribution, improve air intake efficiency, reduce air resistance, enhance structural stability, facilitate installation and maintenance, and achieve strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2 is a schematic diagram of the supporting device structure; Figure 3 is a schematic diagram of the cleaning device structure; Figure 4 is a schematic cross-sectional view of an extended assembly; Figure 5 is a schematic diagram of the structure of the spoiler; Figure 6 is a schematic cross-sectional view of a collection box; Figure 7 It is a schematic diagram of the installation pipe cross section.

[0028] 1. Support device; 11. Mounting assembly; 111. Support ring; 112. Adjusting bolt; 113. Abutment plate; 114. Flexible pad; 12. Extension assembly; 121. Fixing tube; 122. Fixing rod; 123. Positioning groove; 124. First spring; 125. Positioning block; 2. Spoiler; 21. Fixing portion; 211. Insertion groove; 212. Locking groove; 213. Placement groove; 214. Fixing groove; 22. Sealing ring; 23. Support groove; 24. Adjusting assembly; 241. First motor; 242. Sprocket; 243. Chain; 25. Spoiler; 26. Connector; 261. Support shaft; 262. Support rod ; 263, support tube; 3, filter device; 31, mounting plate; 311, locking plate; 32, support frame; 33, collection box; 34, baffle; 4, cleaning device; 41, drive assembly; 411, second motor; 412, screw; 413, mounting block; 42, cleaning assembly; 421, gear; 422, rack; 423, mounting tube; 424, mounting rod; 425, second spring; 43, positioning ring; 44, fastening member; 441, guide block; 442, abutment block; 45, striking assembly; 451, elastic rod; 452, striking hammer; 46, scraper assembly; 461, cross bar; 462, scraper sheet; 463, push rod. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-7 This application is described in further detail.

[0030] An embodiment of the present application discloses an air intake device of an engine.

[0031] Reference Figure 1 , Figure 2 and Figure 3 An air intake device of an engine includes a supporting device 1, a spoiler device 2, a filtering device 3 and a cleaning device 4.

[0032] Reference Figure 2 The support device 1 is installed at the intake pipe of the engine. The support device 1 includes two mounting components 11. The two mounting components 11 are symmetrically arranged along the axis direction of the intake pipe of the engine. The mounting component 11 includes a support ring 111. In this embodiment, the support ring 111 is preferably a semicircular ring, and the two support rings 111 together form a circular ring.

[0033] Reference Figure 2 The support ring 111 is evenly distributed with support members along the axial direction, and the support members include an adjusting bolt 112 and an abutment plate 113. The adjusting bolt 112 is arranged along the radial direction of the engine. The adjusting bolt 112 passes through the support ring 111 and is threadedly connected to the support ring 111. The abutment plate 113 is located on the outside of the support ring 111, and the abutment plate 113 is rotatably connected to the adjusting bolt 112 by means of a hinge seat connection. The abutment plate 113 and the adjusting bolt 112 are coaxially arranged.

[0034] Reference Figure 2 A flexible pad 114 is provided on the end surface of the abutment plate 113 away from the adjusting bolt 112 , and the flexible pad 114 is fixedly connected to the abutment plate 113 by screws.

[0035] Reference Figure 2 and Figure 4 Each support ring 111 is equipped with an extension component 12, which includes a fixed tube 121 and a fixed rod 122. The fixed tube 121 is rotatably connected to one end of the support ring 111 close to the engine air intake by means of a ball hinge seat connection. The fixed rod 122 is penetrated into the inner cavity of the fixed tube 121, and the fixed rod 122 can slide along the axial direction of the fixed tube 121. The side wall of the fixed rod 122 is provided with a plurality of positioning grooves 123, and the plurality of positioning grooves 123 are arranged in sequence along the axial direction of the fixed rod 122. The inner cavity of the fixed tube 121 is provided with a first spring 124 and a positioning block 125. In this embodiment, the telescopic direction of the first spring 124 is parallel to the opening direction of the positioning groove 123. The positioning groove 123 is used to accommodate the positioning block 125. The two ends of the first spring 124 are fixedly connected to the fixed tube 121 and the positioning block 125 respectively.

[0036] Reference Figure 1 , the spoiler 2 is located in the air intake of the engine.

[0037] Reference Figure 5The spoiler 2 includes a fixing portion 21. In the present embodiment, the fixing portion 21 is preferably a hollow rectangular frame. The end surface of the fixing portion 21 away from the engine air intake is provided with two connecting holes. The inner cavity of each connecting hole is provided with a connecting ball, and the connecting ball can rotate along the connecting hole. Each connecting ball is fixedly connected to a fixing rod 122. In the present embodiment, the fixing portion 21 is vertically arranged.

[0038] Reference Figure 1 The outer wall of the fixing part 21 is sleeved with a sealing ring 22, which is fixedly connected to the fixing part 21 by screws, and the end surface of the sealing ring 22 away from the fixing part 21 is attached to the inner wall of the engine air intake.

[0039] Reference Figure 5 A supporting groove 23 is provided on the inner wall of the fixing portion 21, and a supporting hole is provided on the top of the supporting groove 23 of the fixing portion 21. In this embodiment, two supporting holes are provided, and the two supporting holes are respectively located on both sides of the fixing portion 21 in the vertical direction, and the supporting groove 23 is connected to the inner cavity of the fixing portion 21.

[0040] Reference Figure 5 The spoiler 2 includes an adjusting component 24, and two adjusting components 24 are provided. The two adjusting components 24 are respectively located in the vertical direction of the fixed part 21. The adjusting component 24 includes a first motor 241, a sprocket 242 and a chain 243. In this embodiment, the first motor 241 is preferably a servo motor, and the first motor 241 is located in the support hole, and the axial direction of the output shaft of the first motor 241 is parallel to the axial direction of the engine intake pipe. The sprocket 242 is provided with two sprockets 242 arranged in sequence along the vertical direction. The upper sprocket 242 is coaxially fixedly connected to the output shaft of the first motor 241 by a key connection, and the lower sprocket 242 is rotatably connected to the fixed part 21 by a bearing connection. The chain 243 is preferably an annular chain, and the chain 243 is sequentially wound around the two sprockets 242, and the chain 243 and the sprocket 242 are meshed.

[0041] Reference Figure 5The spoiler device 2 further includes a plurality of spoilers 25, which are arranged in sequence in the vertical direction. In this embodiment, the spoiler 25 is preferably a rectangular plate, the long side direction of the spoiler 25 is horizontal, and both sides of the long side direction of the spoiler 25 are provided with connecting members 26, the connecting members 26 include a support shaft 261, a support rod 262 and a support tube 263, the support shaft 261 and the support rod 262 are arranged in sequence in the direction opposite to the gas flow direction, and the axial direction of the support shaft 261 is parallel to the long side of the spoiler 25. direction, one end of the support shaft 261 is fixedly connected to the spoiler 25, and the other end is passed through the fixing portion 21 and can rotate along the fixing portion 21, the axial direction of the support rod 262 is perpendicular to the long side direction of the spoiler 25, the support rod 262 and the spoiler 25 are rotatably connected through a ball hinge seat, the support tube 263 is sleeved on the support rod 262 and can be slidably connected along the support tube 263, the support tube 263 and the chain 243 are rotatably connected, and the rotation axis of the support tube 263 is perpendicular to the long side direction of the spoiler 25.

[0042] Reference Figure 2 A plug-in slot 211 is vertically penetrated through the top wall of the fixing portion 21, and the long side direction of the plug-in slot 211 is parallel to the long side direction of the spoiler 25. A locking slot 212 is provided on the side wall of the plug-in slot 211 of the fixing portion 21, and the inner cavity of the locking slot 212 and the plug-in slot 211 are connected.

[0043] Reference Figure 2 and Figure 3 The filter device 3 also includes a mounting plate 31, which is inserted into the plug-in slot 211 and can slide along the opening direction of the plug-in slot 211. A locking plate 311 is provided at the mounting plate 31. In this embodiment, the locking plate 311 is preferably a rectangular bar, and the locking slot 212 is used to accommodate the locking plate 311, and the locking plate 311 is rotatably connected to the mounting plate 31 through a rotating shaft.

[0044] Reference Figure 3 The filtering device 3 also includes two support frames 32, which are arranged in sequence along the axial direction of the engine intake pipe. The support frames 32 are fixedly connected to the mounting plate 31 by screws, and the side walls of the support frames 32 are attached to the inner wall of the fixing portion 21. In this embodiment, the support frame 32 is preferably a hollow rectangular frame, and the inner cavity of the support frame 32 is provided with a filter screen, which is fixedly connected to the support frame 32 by screws.

[0045] Reference Figure 3 and Figure 6The bottom wall of the fixing portion 21 is provided with a placement groove 213 between the two support frames 32. In the present embodiment, the groove width of the placement groove 213 is greater than the end surfaces of the two support frames 32 that are away from each other. The inner cavity of the placement groove 213 is provided with a collection box 33. In the present embodiment, the collection box 33 is preferably a rectangular box in the opening direction, and the collection box 33 can slide along the axial direction of the placement groove 213.

[0046] Reference Figure 3 and Figure 6 Two baffles 34 are provided in the placement groove 213, and the two baffles 34 are conveniently located at the end faces of the two support frames 32 that are away from each other. In this embodiment, the baffle 34 is preferably a hollow rectangular plate, and the baffle 34 is rotatably connected to the fixing portion 21 by a torsion spring connection, wherein the torsion spring is installed on the side of the baffle 34 away from the support frame 32, and the rotation axis of the baffle 34 is horizontal and perpendicular to the direction of travel of the gas. Here, when the baffle 34 is in a horizontal state, it is preferably the initial position of the baffle 34, and the end face of the baffle 34 away from the torsion spring is attached to the side wall of the support frame 32.

[0047] Reference Figure 3 A fixing groove 214 is provided between the two supporting frames 32 of the fixing portion 21 , and the long side direction of the fixing groove 214 is vertically arranged.

[0048] Reference Figure 3 The cleaning device 4 includes a driving assembly 41, and the driving assembly 41 includes a second motor 411, a screw 412 and a mounting block 413. In this embodiment, the second motor 411 is preferably a servo motor. The second motor 411 is vertically arranged, the screw 412 is vertically arranged, and the screw 412 and the output shaft of the second motor 411 are coaxially fixedly connected. The mounting block 413 is penetrated by a through hole in the vertical direction, and the inner cavity of the through hole is provided with a screw nut. The mounting block 413 is threadedly connected to the screw nut and the screw 412 through the screw nut, and the side wall of the mounting block 413 is in contact with the side wall of the fixing groove 214.

[0049] Reference Figure 3 and Figure 7 The cleaning device 4 also includes a cleaning component 42, which includes a gear 421, a rack 422 and a mounting tube 423. The gear 421 is rotatably connected to the mounting block 413 by a bearing connection. The rack 422 is vertically arranged, and the rack 422 is fixedly connected to the fixing portion 21. The gear 421 and the rack 422 are fixedly connected. The mounting tube 423 is penetrated by the mounting block 413 and rotatably connected to the mounting block 413. The mounting tube 423 and the gear 421 are coaxially fixedly connected.

[0050] Reference Figure 3 and Figure 7The cleaning assembly 42 also includes a mounting rod 424 and a second spring 425. The mounting rod 424 is passed through the mounting tube 423 and can slide along the axial direction of the mounting tube 423. The extension and contraction direction of the second spring 425 is parallel to the axial direction of the mounting tube 423, and the two ends of the second spring 425 are fixedly connected to the mounting rod 424 and the mounting tube 423 respectively.

[0051] Reference Figure 7 The inner cavity of the mounting tube 423 is provided with a positioning ring 43 and a plurality of abutting members 44, and the positioning ring 43 and the mounting tube 423 are coaxially fixedly connected. The plurality of abutting members 44 are uniformly distributed circumferentially along the axial direction of the mounting tube 423, and the abutting members 44 include a guide block 441 and a guide block 441. In this embodiment, the guide block 441 is preferably an isosceles right triangle block, and the plurality of guide blocks 441 are arranged in sequence along the same direction, and one hypotenuse of the guide block 441 abuts against the positioning ring 43, and the right-angled side of the guide block 441 is located at the end face of the positioning ring 43 away from the mounting block 413, and the guide block 441 and the mounting tube 423 are fixedly connected; the abutting block 442 is always in contact with the right-angled side of the guide block 441 or the end face of the positioning ring 43 away from the mounting block 413, and the abutting block 442 is fixedly connected to the mounting rod 424 by screw fixing.

[0052] Reference Figure 3 The cleaning assembly 42 also includes a plurality of striking assemblies 45, which are arranged in sequence along the axial direction of the mounting rod 424. The striking assemblies 45 include an elastic rod 451 and a striking hammer 452. In this embodiment, the elastic rod 451 can be extended and retracted along the axial direction, and the axial direction of the elastic rod 451 is consistent with the radial direction of the mounting rod 424. The two ends of the elastic rod 451 are respectively fixedly connected to the striking hammer 452 and the mounting rod 424, and the striking hammer 452 can abut against the surface of the filter.

[0053] Reference Figure 3 The side wall of the support frame 32 is provided with a through groove, which is vertically arranged. The support frame 32 is provided with bristles in the inner cavity of the through groove, and the bristles can close the through groove to a certain extent.

[0054] Reference Figure 3 The cleaning device 4 also includes two scraper assemblies 46. Each support frame 32 is provided with a corresponding scraper assembly 46. The scraper assembly 46 includes a crossbar 461. The crossbar 461 is inserted into the through slot. The axis direction of the crossbar 461 is horizontal and parallel to the flow direction of the gas. Scraper pieces 462 are provided at both ends of the crossbar 461. The long side direction of the scraper piece 462 is horizontal and perpendicular to the flow direction of the gas. One end of the scraper piece 462 is elastically hinged to the crossbar 461, and the other end is attached to the side wall of the filter screen.

[0055] Reference Figure 3Each baffle 34 corresponds to a push rod 463, the push rod 463 is located below the cross bar 461, and the push rod 463 is fixedly connected to the mounting rod 424. The push rod 463 can abut against the baffle 34 and make the baffle 34 rotate.

[0056] The implementation principle of the intake device of an engine in an embodiment of the present application is as follows: the operator first places the support ring 111 at a suitable position of the engine intake pipe, and then rotates the adjusting bolt 112 to fix the abutment plate 113 to the engine intake pipe, and then pushes the fixing portion 21 to the inner cavity of the engine intake pipe along the gas flow direction, so that the positioning block 125 is located in the corresponding positioning groove 123, thereby fixing the position between the fixing rod 122 and the fixing pipe 121.

[0057] When the operator needs to adjust the air intake efficiency, the operator only needs to control the first motor 241 to drive the chain 243 to rotate. At this time, the support rod 262 slides along the support tube 263, thereby causing the spoiler to rotate along the fixing portion 21 to complete the adjustment of the air intake efficiency.

[0058] When the filter becomes dirty after being used for a period of time, the operator drives the screw 412 to rotate, thereby driving the mounting block 413 to slide in the vertical direction. The mounting block 413 drives the gear 421 to slide, and at the same time the gear 421 and the rack 422 engage, so that the mounting tube 423 rotates, and the mounting tube 423 drives the guide block 441 to rotate. The mounting rod 424 realizes reciprocating motion along the mounting tube 423 through the abutment block 442, so that the mounting rod 424 can rotate with the mounting tube 423, and at the same time, the filter is struck and dusted by the striking hammer 452.

[0059] The mounting block 413 drives the cross bar 461 to slide, thereby driving the scraper piece 462 to clean the surface of the filter screen. When the scraper piece 462 is at the bottom, the push rod 463 drives the baffle to rotate, the collection box 33 opens, and the dust falls into the collection box 33.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An air intake device for an engine, characterized in that: It comprises a fixing part (21), a filtering device (3) and a cleaning device (4); the fixing part (21) is fixed to the air intake pipe of the engine; The filtering device (3) comprises two supporting frames (32), the two supporting frames (32) are arranged in sequence along the axial direction of the engine intake pipe, the supporting frames (32) and the fixing portion (21) are detachably connected, and a filter screen is arranged inside the supporting frame (32); The cleaning device (4) is installed between the two filter screens, and comprises a mounting tube (423) and a mounting rod (424); the mounting tube (423) slides in a vertical direction, and the mounting tube (423) and the fixing portion (21) are rotatably connected; the mounting rod (424) is inserted into the mounting tube (423) and elastically slides along the mounting tube (423); The mounting rod (424) is provided with a plurality of striking assemblies (45) along the long side direction, and the striking assemblies (45) include an elastic rod (451) and a striking hammer (452), and both ends of the elastic rod (451) are connected to the striking hammer (452) and the mounting rod (424), and the striking hammer (452) abuts against the filter screen.

2. An air intake device for an engine according to claim 1, characterized in that: The mounting tube (423) is provided with a mounting block (413), the mounting block (413) slides in a vertical direction, and the mounting tube (423) and the mounting block (413) are rotatably connected; The support frame (32) is provided with a through slot, and each of the support frames (32) is equipped with a cross bar (461), the cross bar (461) is inserted into the through slot, the cross bar (461) and the mounting block (413) are fixedly connected, and scraping pieces (462) are provided on both sides of the filter screen, the scraping pieces (462) are in contact with the filter screen, and are elastically hinged to the cross bar (461).

3. An air intake device for an engine according to claim 2, characterized in that: The bottom of the fixed portion (21) is provided with a placement groove (213); the filter device (3) is provided with a collection box (33) in the placement groove (213); the support frame (32) is located inside the collection box (33); the end faces of the support frame (32) that are away from each other are provided with baffles (34); the baffles (34) are rotatably connected to the fixed portion (21), and the baffles (34) abut against the support frame (32).

4. The air intake device of an engine according to claim 3, characterized in that: A push rod (463) is provided at the bottom of the cross bar (461), and the push rod (463) abuts against the baffle plate (34) and is used to drive the baffle plate (34) to rotate along the fixing portion (21).

5. The air intake device of an engine according to claim 2, characterized in that: The inner cavity of the mounting tube (423) is coaxially fixedly connected with a positioning ring (43), and the positioning ring (43) is evenly distributed with abutments (44) in the circumferential direction. The abutments (44) include a guide block (441) and an abutment block (442). The guide block (441) and the positioning ring (43) are fixedly connected, and the abutment block (442) is fixedly connected with the mounting rod (424), and the abutment block (442) is always in contact with the guide block (441) and / or the positioning ring (43).

6. An air intake device for an engine according to claim 5, characterized in that: The installation rod (424) is equipped with a second spring (425), and two ends of the second spring (425) are fixedly connected to the installation rod (424) and the installation pipe (423) respectively.

7. An air intake device for an engine according to claim 6, characterized in that: The mounting block (413) is provided with a screw rod (412), the screw rod (412) and the fixing portion (21) are rotatably connected, and the mounting block (413) and the screw rod (412) are threadedly connected; The cleaning device (4) further comprises a gear (421) and a rack (422); the gear (421) and the mounting tube (423) are coaxially fixedly connected; the rack (422) and the fixing portion (21) are fixedly connected; and the gear (421) and the rack (422) are meshed.

8. The air intake device of an engine according to claim 1, characterized in that: The fixed portion (21) is provided with a spoiler device (2) on one side close to the front end of the air inlet, the spoiler device (2) comprises an adjustment component (24) and a plurality of spoilers (25), the adjustment component (24) comprises a chain (243), the chain (243) is rotatably connected to the fixed portion (21), the spoilers (25) are arranged in sequence along the vertical direction, one end of the spoiler (25) is rotatably connected to the fixed portion (21), and the other end is connected to the chain (243).

9. An air intake device for an engine according to claim 8, characterized in that: The spoiler (25) is provided with a support shaft (261), a support rod (262) and a support tube (263); one end of the support shaft (261) is fixedly connected to the spoiler (25), and the other end is rotatably connected to the fixed portion (21); the support rod (262) is rotatably connected to the spoiler (25); the support tube (263) is sleeved on the support rod (262) and slides along the axial direction of the support rod (262); and the support tube (263) is rotatably connected to the chain (243).

10. The air intake device of an engine according to claim 1, characterized in that: A sealing ring (22) is sandwiched between the fixing portion (21) and the engine air intake pipe.

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