Air intake device of an engine

Abstract

The present application relates to an air intake device of an engine, and relates to the technical field of engines, which includes a fixing part, a filtering device and a cleaning device; the fixing part is fixed to the intake pipe of the engine; the filtering device includes two supporting frames, and the two supporting frames are arranged in sequence along the flow direction of the gas, and the supporting frames and the fixing part are detachably connected, and a filter is provided in the supporting frame; the cleaning device is installed between the two filter screens, and the cleaning device includes a mounting tube and a mounting rod, the mounting tube slides in a vertical direction, and the mounting tube and the fixing part are rotatably connected, the mounting rod is passed through the mounting tube, and elastically slides along the mounting tube; the mounting rod is provided with a plurality of striking components along the long side direction, the striking component includes an elastic rod and a striking hammer, and the two ends of the elastic rod are connected to the striking hammer and the mounting rod, and the striking hammer abuts against the filter. The present application has the effect of being able to clean the filter element in time and ensure the stability of the intake.

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 operations.

[0003] In related technologies, the engine's air intake device is usually composed of an intake pipe and a diverter pipe. An air filter is installed in the intake pipe, and 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 cooperate with the fuel for combustion, finally realizing the gas intake operation and enabling the engine to work normally.

[0004] Regarding 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 condition of the filter and further affect the engine's air intake effect. Repeated replacement will result in increased costs. 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] This application provides an engine air intake device, which adopts the following technical solutions:

[0007] An air intake device for an engine comprises a fixing portion, a filtering device and a cleaning device; the fixing portion is fixed to an air intake pipe of the engine;

[0008] The filtering device includes two support frames, which are arranged in sequence along the axis of the engine intake pipe. The support frames and the fixing portion are detachably connected, and a filter is provided in the support frames.

[0009] The cleaning device is installed between the two filter screens, and includes a mounting tube and a mounting rod. The mounting tube slides in a vertical direction, and the mounting tube is rotatably connected to the fixing portion. The mounting rod is passed through the mounting tube and elastically slides along the mounting tube.

[0010] The mounting 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 mounting rod. The striking hammer abuts against the filter screen.

[0011] By adopting the above technical solution, the filters installed 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. Through the vertical sliding and rotating connection of the mounting tube, and the elastic sliding of the mounting rod along the mounting tube, the striking assembly can automatically clean the filter; this design reduces the frequency of manual cleaning and improves 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, 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.

[0012] 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;

[0013] The support frame is provided with a through slot, and each support frame is equipped with a cross bar, which is passed through the through slot. The cross bar is fixedly connected to the mounting block, and scraping pieces are provided on both sides of the filter screen. The scraping pieces abut against the filter screen and are elastically hinged to the cross bar.

[0014] 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, while 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, avoiding excessive wear or damage to the filter screen and extending the service life of the filter screen.

[0015] Optionally, a placement groove is provided at the bottom of the fixed part, the filter device is provided with a collection box in the placement groove, the support frame is located inside the collection box, and the end faces of the support frame away from each other are provided with baffles, the baffles are rotatably connected to the fixed part, and the baffles abut against the support frame.

[0016] By adopting the above technical solution, the collection box arranged in the placement groove can effectively collect impurities and particulate matter that falls from the filter, allowing users to 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.

[0017] Optionally, a push rod is provided at the bottom of the cross bar, and the push rod abuts against the baffle and is used to drive the baffle to rotate along the fixed portion.

[0018] 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 and causing impurities in the collection box to overflow.

[0019] Optionally, the inner cavity of the mounting tube is coaxially fixedly connected with a positioning ring, and the positioning ring is circumferentially evenly distributed with tightening members, 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.

[0020] 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. At the same time, it 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.

[0021] Optionally, the mounting rod is equipped with a second spring, and both ends of the second spring are fixedly connected to the mounting rod and the mounting tube respectively.

[0022] By adopting the above technical solution, the second spring acts as an elastic element, which 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.

[0023] Optionally, the mounting block is provided with a screw, the screw is rotatably connected to the fixing portion, and the mounting block is threadedly connected to the screw;

[0024] The cleaning device further comprises a gear and a rack, wherein the gear is coaxially fixedly connected to the mounting tube, the rack is fixedly connected to the fixing portion, and the gear is meshed with the rack.

[0025] By adopting the above technical solution, the user can firmly fix the cleaning device in the desired position through the adjustment of the screw. 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.

[0026] 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 in sequence 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.

[0027] 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, adapting to different working environments and air intake requirements, while optimizing the airflow distribution and helping to reduce air resistance.

[0028] 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.

[0029] 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.

[0030] Optionally, a sealing ring is sandwiched between the fixing portion and the engine air intake pipe.

[0031] By adopting the above technical solution, the main function of the sealing ring is to ensure good sealing at the connection between the fixed part and the engine intake pipe, 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.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. The filter and cleaning devices are equipped with high-efficiency filtration, easy maintenance and replacement, automatic cleaning function, good cleaning effect and strong adaptability, ensuring that the filter is kept in a relatively clean state, which is of great significance to improving engine performance and extending service life.

[0034] 2. By setting up the placement groove, collection box and baffles on the end surface of the support frame, impurities are collected and cleaned easily, and impurities are prevented from overflowing, which is convenient for operators to clean regularly;

[0035] 3. By setting up a spoiler device, it is possible to optimize air flow distribution, improve air intake efficiency, reduce air resistance, enhance structural stability, facilitate installation and maintenance, and have strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application;

[0037] Figure 2 is a schematic diagram of the supporting device structure;

[0038] Figure 3 1. It is a schematic diagram of the structure of the cleaning device;

[0039] Figure 4 is a schematic cross-sectional view of the extended assembly;

[0040] Figure 5 1 is a schematic diagram of the structure of the spoiler;

[0041] Figure 6 is a schematic cross-sectional view of a collection box;

[0042] Figure 7 It is a schematic diagram of the installation pipe cross section.

[0043] Figure numerals: 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. Collecting 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. Clamping 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

[0044] The following is combined with Figure 1-7 This application is described in further detail.

[0045] An embodiment of the present application discloses an air intake device for an engine.

[0046] 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.

[0047] Reference Figure 2 The support device 1 is mounted on the engine's intake pipe and includes two mounting assemblies 11 symmetrically arranged along the axis of the engine's intake pipe. The mounting assemblies 11 include support rings 111 . In this embodiment, the support rings 111 are preferably semicircular rings, and the two support rings 111 together form a circular ring.

[0048] Reference Figure 2 The support ring 111 is axially evenly distributed with support members along the axial direction. 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 through a hinge seat connection. The abutment plate 113 and the adjusting bolt 112 are coaxially arranged.

[0049] Reference Figure 2 A flexible pad 114 is provided on the end surface of the abutting plate 113 away from the adjusting bolt 112 , and the flexible pad 114 is fixedly connected to the abutting plate 113 by screws.

[0050] Reference Figure 2 and Figure 4 Each support ring 111 is equipped with an extension component 12, which includes a fixing tube 121 and a fixing rod 122. The fixing tube 121 is rotatably connected to the end of the support ring 111 close to the engine air intake by means of a ball hinge seat. The fixing rod 122 is arranged in the inner cavity of the fixing tube 121, and the fixing rod 122 can slide along the axial direction of the fixing tube 121. The side wall of the fixing 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 fixing rod 122. The inner cavity of the fixing tube 121 is provided with a first spring 124 and a positioning block 125. In this embodiment, the expansion and contraction 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 fixing tube 121 and the positioning block 125 respectively.

[0051] Reference Figure 1 , the spoiler 2 is located in the air intake of the engine.

[0052] Reference Figure 5 The spoiler 2 includes a fixing portion 21. In this 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, which can rotate along the connecting hole. Each connecting ball is fixedly connected to a fixing rod 122. In this embodiment, the fixing portion 21 is vertically arranged.

[0053] Reference Figure 1 The outer wall of the fixing portion 21 is provided with a sealing ring 22, which is fixedly connected to the fixing portion 21 by screws, and the end surface of the sealing ring 22 away from the fixing portion 21 is attached to the inner wall of the engine air intake.

[0054] Reference Figure 5 The inner wall of the fixing portion 21 is provided with a support groove 23, and the fixing portion 21 is provided with a support hole at the top of the support groove 23. In this embodiment, there are two support holes, which are respectively located on both sides of the fixing portion 21 in the vertical direction, and the support groove 23 is connected to the inner cavity of the fixing portion 21.

[0055] Reference Figure 5 The spoiler 2 includes an adjusting component 24, which is provided with two adjusting components 24. 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 is engaged with the sprocket 242.

[0056] Reference Figure 5The spoiler device 2 further includes a plurality of spoilers 25, which are arranged in sequence along the vertical direction. In this embodiment, the spoiler 25 is preferably a rectangular plate, the long side of the spoiler 25 is horizontal, and both sides of the long side of the spoiler 25 are provided with a connecting member 26, the connecting member 26 includes 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 along 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 the 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.

[0057] Reference Figure 2 The top wall of the fixing portion 21 is provided with an insertion groove 211 along the vertical direction, and the long side direction of the insertion groove 211 is parallel to the long side direction of the spoiler 25. The fixing portion 21 is provided with a locking groove 212 on the side wall of the insertion groove 211, and the locking groove 212 is connected to the inner cavity of the insertion groove 211.

[0058] 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.

[0059] 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 fitted 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.

[0060] 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 this embodiment, the groove width of the placement groove 213 is greater than the end faces 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 this 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.

[0061] 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 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.

[0062] Reference Figure 3 The fixing portion 21 is provided with a fixing groove 214 between the two support frames 32 , and the long side direction of the fixing groove 214 is vertically arranged.

[0063] Reference Figure 3 The cleaning device 4 includes a driving assembly 41, which 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 provided with 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 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.

[0064] Reference Figure 3 and Figure 7 The cleaning device 4 also includes a cleaning assembly 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 through 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 passed through the mounting block 413 and rotatably connected to the mounting block 413. The mounting tube 423 and the gear 421 are coaxially fixedly connected.

[0065] 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.

[0066] 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. The positioning ring 43 and the mounting tube 423 are coaxially fixedly connected. The plurality of abutting members 44 are evenly distributed circumferentially along the axial direction of the mounting tube 423. 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. The plurality of guide blocks 441 are arranged in sequence along the same direction. One hypotenuse of the guide block 441 abuts against the positioning ring 43. 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. The guide block 441 and the mounting tube 423 are fixedly connected. The abutting block 442 always fits the right-angled side of the guide block 441 or the end face of the positioning ring 43 away from the mounting block 413. The abutting block 442 is fixedly connected to the mounting rod 424 by screws.

[0067] Reference Figure 3 The cleaning component 42 also includes multiple groups of striking components 45, which are arranged in sequence along the axial direction of the mounting rod 424. The striking components 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. 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 fixedly connected to the striking hammer 452 and the mounting rod 424 respectively, and the striking hammer 452 can abut against the surface of the filter.

[0068] 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.

[0069] Reference Figure 3 The cleaning device 4 also includes two scraper assemblies 46, one for each support frame 32. The scraper assembly 46 includes a crossbar 461 that passes through the through slot. The axis of the crossbar 461 is horizontal and parallel to the direction of gas flow. Scraper blades 462 are provided at both ends of the crossbar 461. The long sides of the scraper blades 462 are horizontal and perpendicular to the direction of gas flow. One end of the scraper blade 462 is elastically hinged to the crossbar 461, and the other end is attached to the side wall of the filter screen.

[0070] 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 rotate the baffle 34.

[0071] 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 on the engine intake pipe, then rotates the adjusting bolt 112 to fix the abutment plate 113 to the engine intake pipe, and then pushes the fixing part 21 into 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 tube 121.

[0072] 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.

[0073] 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, causing the mounting tube 423 to rotate, and the mounting tube 423 drives the guide block 441 to rotate. The mounting rod 424 is able to make 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 dust is removed by the striking hammer 452.

[0074] The mounting block 413 drives the cross bar 461 to slide, thereby driving the scraper 462 to clean the filter surface. When the scraper 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.

[0075] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An air intake device for an engine, characterized in that: The invention comprises a fixing portion (21), a filtering device (3) and a cleaning device (4); the fixing portion (21) is fixed to the 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 intake pipe of the engine, the supporting frames (32) and the fixing portion (21) are detachably connected, and a filter screen is provided in the supporting frame (32); the cleaning device (4) is installed between the two filter screens, the cleaning device (4) 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, and the mounting rod (424) is passed through 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 longitudinal direction, the striking assemblies (45) comprising an elastic rod (451) and a striking hammer (452), the two ends of the elastic rod (451) being connected to the striking hammer (452) and the mounting rod (424), and the striking hammer (452) being in contact with the filter screen; 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 support frame (32) is provided with a cross bar (461), the cross bar (461) is passed through 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) abut against the filter screen and are elastically hinged to the cross bar (461).

2. The air intake device of an engine according to claim 1, characterized in that: A placement groove (213) is provided at the bottom of the fixing portion (21); a collection box (33) is provided in the placement groove (213) of the filter device (3); the support frame (32) is located inside the collection box (33); and baffles (34) are provided on the end faces of the support frame (32) that are away from each other. The baffles (34) are rotatably connected to the fixing portion (21), and the baffles (34) abut against the support frame (32).

3. The air intake device of an engine according to claim 2, 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 (34) and is used to drive the baffle (34) to rotate along the fixed portion (21).

4. The air intake device of an engine according to claim 1, characterized in that: The inner cavity of the mounting tube (423) is coaxially fixedly connected to a positioning ring (43), and the positioning ring (43) is evenly distributed with abutting members (44) in the circumferential direction. The abutting members (44) include a guide block (441) and an abutting block (442). The guide block (441) and the positioning ring (43) are fixedly connected, and the abutting block (442) is fixedly connected to the mounting rod (424), and the abutting block (442) is always in contact with the guide block (441) and / or the positioning ring (43).

5. The air intake device of an engine according to claim 4, characterized in that: The installation rod (424) is equipped with a second spring (425), and the two ends of the second spring (425) are fixedly connected to the installation rod (424) and the installation pipe (423) respectively.

6. The air intake device of an engine according to claim 5, characterized in that: The mounting block (413) is provided with a screw (412), the screw (412) and the fixing portion (21) are rotatably connected, and the mounting block (413) and the screw (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.

7. 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 a side close to the front end of the air inlet. The spoiler device (2) includes an adjustment component (24) and a plurality of spoilers (25). The adjustment component (24) includes 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).

8. The air intake device of an engine according to claim 7, characterized in that: The spoiler (25) is equipped 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 axis direction of the support rod (262). The support tube (263) is rotatably connected to the chain (243).

9. 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.

Images