Gasoline saw engine inlet air pre-filtering device

Abstract

The invention discloses a gasoline saw engine inlet air pre-filtering device, and relates to the field of gasoline saw engine inlet air pre-filtering, the gasoline saw engine inlet air pre-filtering device comprises an inlet air pre-filtering shell, a filtering self-cleaning assembly is arranged in the inlet air pre-filtering shell, and a dust discharging assembly is arranged on one side of the filtering self-cleaning assembly; one side of the air inlet pre-filtering shell is provided with a multi-channel air inlet adjusting assembly, and one side of the multi-channel air inlet adjusting assembly is provided with an air inlet anti-blocking assembly. In actual use, impurities are automatically and respectively classified and cleaned, large-particle impurities are automatically discharged, and dust is collected during multi-stage filtering through the filtering self-cleaning assembly; the problems that an engine air inlet system of a traditional gasoline saw generally adopts a single-stage filtering design and depends on a paper filter element or a simple metal net to intercept particulate matter, but under the high-dust working conditions such as felling and forest region operation, the filtering mode is prone to causing air inlet efficiency reduction and even causing engine power attenuation or abnormal abrasion due to rapid blockage of dust are solved.

Description

Technical Field

[0001] The present invention relates to the field of intake pre - filtration of gasoline saw engines, and more specifically, to an intake pre - filtration device for gasoline saw engines. Background Art

[0002] A chain saw, also known as an oil saw, is a hand - held saw powered by a gasoline engine. It is mainly used for logging and lumbering. Its working principle is that the staggered L - shaped blades on the saw chain move horizontally to perform a shearing action. Chain saws are generally divided into motorized chain saws, non - motorized chain saws, etc. The gasoline saw engine is mainly a two - stroke engine. Different from the four - stroke engines commonly used on tractors, the two - stroke engine used in oil saws has more powerful power. The two - stroke engine can provide a higher power output at the same displacement and is suitable for high - intensity operation requirements. Its working process is as follows: First, the piston moves downward, the intake port opens, and the mixture of gasoline and air is inhaled into the cylinder. Then, the piston moves upward, compressing the mixture, increasing its temperature and pressure. When the compression reaches a certain level, the spark plug generates an electric spark to ignite the mixture. The high - temperature and high - pressure gas generated by combustion pushes the piston downward, driving the crankshaft to rotate through the connecting rod, thereby outputting power. The rotation of the crankshaft drives the saw chain to rotate at high speed, and the teeth on the saw chain interact with the wood to achieve the function of cutting wood.

[0003] The intake systems of traditional gasoline saw engines generally adopt a single - stage filtration design, relying on paper filters or simple metal meshes to intercept particulate matter. However, in high - dust working conditions (such as logging and forest area operations), such filtration methods are prone to a decline in intake efficiency due to rapid dust clogging, and may even cause engine power attenuation or abnormal wear. Summary of the Invention

[0004] In view of the problems in the related art, the present invention proposes an intake pre - filtration device for gasoline saw engines to overcome the above - mentioned technical problems existing in the existing related technologies.

[0005] For this purpose, the specific technical solution adopted by the present invention is as follows:

[0006] An intake pre - filtration device for a gasoline saw engine, comprising an intake pre - filtration housing. A filter self - cleaning assembly is arranged inside the intake pre - filtration housing, a dust discharge assembly is arranged on one side of the filter self - cleaning assembly, a multi - channel intake adjustment assembly is arranged on one side of the intake pre - filtration housing, and an intake anti - clogging assembly is arranged on one side of the multi - channel intake adjustment assembly;

[0007] To achieve the function of filtration and self-cleaning, the filtration self-cleaning component includes an impurity mounting frame, which is installed inside the intake pre-filter housing. The number of impurity mounting frames is three. An impurity coarse filter screen is installed inside the impurity mounting frame. One side of one of the impurity coarse filter screens is provided with an impurity fine filter screen, and one side of the impurity fine filter screen is provided with a dust filter screen. The impurity fine filter screen and the dust filter screen are respectively installed inside the other two impurity mounting frames. A rotating shaft is movably connected inside the impurity mounting frame. One end of the rotating shaft is connected to an intake fan blade, and a cleaning mounting arc plate is connected to the periphery of the rotating shaft. Impurity discharge ports are symmetrically opened on both sides of the intake pre-filter housing, and the number of impurity discharge ports is three. Two of the impurity discharge ports are connected to an impurity discharge housing on the periphery. An impurity sliding groove is provided inside the impurity discharge housing, and a discharge sliding plate is slidably fitted inside the impurity sliding groove. On one side of the discharge sliding plate, discharge electric push rods are symmetrically connected, and the discharge electric push rods are connected to the impurity discharge housing through a discharge fixing frame. A pressure sensor is installed inside the discharge sliding plate. On one side of one of the impurity discharge ports, a dust discharge housing is symmetrically connected.

[0008] Further, a discharge limit plate is slidably fitted to the bottom of the discharge sliding plate, and the discharge limit plate is connected to the intake pre-filter housing.

[0009] Further, a controller is provided on one side of the intake pre-filter housing, and the discharge electric push rods and the pressure sensor are electrically connected to the controller.

[0010] Further, to achieve the function of dust discharge, the dust discharge component includes a dust discharge pipe. The dust discharge pipe is connected to... A dust discharge valve is installed inside the dust discharge pipe. One end of the dust discharge pipe is threadedly connected to a threaded connection sleeve, and a dust removal cloth bag is connected to one side of the threaded connection sleeve.

[0011] Further, to achieve the function of multi-channel intake adjustment, the multi-channel intake adjustment component includes an intake installation square pipe. A sealing baffle is movably installed inside the intake installation square pipe. Limit baffles are symmetrically connected inside the intake installation square pipe, and the limit baffles are fixedly connected to the intake installation square pipe. One side of the sealing baffle is connected to a thrust spring, and the thrust spring is connected to the intake installation square pipe. One side of the sealing baffle is connected to a sliding push plate, and one side of the sliding push plate is connected to a multi-stage electric push rod, and the multi-stage electric push rod is connected to the intake installation square pipe.

[0012] Further, a push rod mounting frame is connected to the periphery of the multi-stage electric push rod, and the push rod mounting frame is connected to the intake installation square pipe. The multi-stage electric push rod is electrically connected to the controller.

[0013] Further, an intake groove is opened on one side of the intake pre-filter housing.

[0014] Further, in order to achieve the effect of preventing air intake blockage, the air intake blockage prevention assembly includes a blockage prevention mounting frame, which is installed above the air intake mounting square pipe. A leaf filter is installed inside the blockage prevention mounting frame, and a cleaning motor is installed in the middle of the blockage prevention mounting frame. One side of the cleaning motor is connected to a cleaning plate.

[0015] Further, the cleaning motor is electrically connected to a controller.

[0016] Further, a storage battery is provided on the periphery of the air intake pre-filter housing, and the controller is electrically connected to the storage battery.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) During the actual use of the present invention, through the filter self-cleaning component, impurities are automatically classified and cleaned respectively during multi-stage filtration. Large particle impurities are automatically discharged, and dust is collected, solving the problem that the engine air intake systems of traditional gasoline saws generally adopt single-stage filtration design, relying on paper filters or simple metal meshes to intercept particulate matter. However, in high-dust working conditions (such as logging and forest area operations), such filtration methods are prone to cause a decrease in air intake efficiency due to rapid dust blockage, and even lead to engine power attenuation or abnormal wear.

[0019] (3) During the actual use of the present invention, when the pressure sensor detects abnormal pressure at the discharge sliding plate, the controller starts the discharge electric push rod to push the discharge sliding plate down along the impurity sliding groove, opening the impurity discharge port. The scraped impurities fall into the outside through the impurity discharge port to complete self-cleaning.

[0020] (2) During the actual use of the present invention, the dust discharge pipe is communicated with the dust discharge housing, and a dust discharge valve is installed inside. The end is fixed to the dust removal cloth bag through a threaded connection sleeve. When the dust filter screen accumulates dust, the controller opens the dust discharge valve, and the airflow guides the dust into the dust removal cloth bag for temporary storage.

[0021] (3) During the actual use of the present invention, the controller controls the telescoping of the multi-stage electric push rod according to the engine working conditions, such as speed and load, and pushes the sealing baffle to adjust the cross-sectional area of the air intake channel to achieve dynamic adjustment of the air intake volume.

[0022] (4) During the actual use of the present invention, the blockage prevention mounting frame is fixed above the air intake mounting square pipe, and a leaf filter is installed inside to intercept large-size foreign objects such as external leaves. The cleaning motor drives the cleaning plate to rotate periodically to sweep away the deposits on the surface of the leaf filter to prevent blockage. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 is a schematic main structure diagram of an intake pre-filtering device for a gasoline saw engine according to an embodiment of the present invention;

[0025] Figure 2 is a perspective view of an intake pre-filtering device for a gasoline saw engine according to an embodiment of the present invention;

[0026] Figure 3 is one of the schematic structure diagrams of a filter self-cleaning component in an intake pre-filtering device for a gasoline saw engine according to an embodiment of the present invention;

[0027] Figure 4 is another schematic structure diagram of a filter self-cleaning component in an intake pre-filtering device for a gasoline saw engine according to an embodiment of the present invention;

[0028] Figure 5 is yet another schematic structure diagram of a filter self-cleaning component in an intake pre-filtering device for a gasoline saw engine according to an embodiment of the present invention;

[0029] Figure 6 is a schematic structure diagram of a dust discharge component in an intake pre-filtering device for a gasoline saw engine according to an embodiment of the present invention;

[0030] Figure 7 is a schematic structure diagram of a multi-channel intake adjustment component in an intake pre-filtering device for a gasoline saw engine according to an embodiment of the present invention;

[0031] Figure 8 is a schematic structure diagram of an intake anti-blocking component in an intake pre-filtering device for a gasoline saw engine according to an embodiment of the present invention.

[0032] In the figure:

[0033] 1. Intake pre-filter housing; 2. Filter self-cleaning assembly; 201. Impurity mounting frame; 202. Coarse impurity filter screen; 203. Fine impurity filter screen; 204. Dust filter screen; 205. Rotating shaft; 206. Intake fan blade; 207. Cleaning mounting arc plate; 208. Impurity discharge port; 209. Impurity discharge housing; 210. Impurity sliding groove; 211. Discharge sliding plate; 212. Discharge electric push rod; 213. Discharge fixing frame; 214. Pressure sensor; 215. Dust discharge housing; 3. Dust discharge assembly; 301. Dust discharge pipe; 302. Dust discharge valve; 303. Threaded connection sleeve; 304. Dust removal cloth bag; 4. Multi-channel intake adjustment assembly; 401. Intake mounting square pipe; 402. Sealing baffle; 403. Limit baffle; 404. Sliding push plate; 405. Multi-stage electric push rod; 406. Thrust spring; 5. Intake anti-blocking assembly; 501. Anti-blocking mounting frame; 502. Leaf filter screen; 503. Cleaning motor; 504. Cleaning plate; 6. Controller; 7. Push rod mounting frame; 8. Intake groove; 9. Battery; 10. Discharge limit plate. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] According to an embodiment of the present invention, there is provided a gasoline saw engine intake pre-filter device, including an intake pre-filter housing 1. Inside the intake pre-filter housing 1, there is a filter self-cleaning assembly 2, and the filter self-cleaning assembly 2 plays a role in filtering and self-cleaning. On one side of the filter self-cleaning assembly 2, there is a dust discharge assembly 3, and the dust discharge assembly 3 plays a role in discharging dust. On one side of the intake pre-filter housing 1, there is a multi-channel intake adjustment assembly 4, and the multi-channel intake adjustment assembly 4 plays a role in multi-channel intake adjustment. On one side of the multi-channel intake adjustment assembly 4, there is an intake anti-blocking assembly 5, and the intake anti-blocking assembly 5 plays a role in preventing intake blockage.

[0036] Example 1

[0037] As Figures 1-5As shown, according to the gasoline saw engine air intake pre-filter device of the embodiment of the present invention, the filtering self-cleaning component 2 includes an impurity mounting frame 201, the impurity mounting frame 201 is installed inside the air intake pre-filter housing 1, the number of the impurity mounting frames 201 is three, and an impurity coarse filter 202 is installed inside the impurity mounting frame 201, one side of the impurity coarse filter 202 is provided with an impurity fine filter 203, and one side of the impurity fine filter 203 is provided with a dust filter 204, the impurity fine filter 203 and the dust filter 204 are respectively installed inside the other two impurity mounting frames 201, and the impurity mounting frame 201 is movably connected with a rotating shaft 205, and the rotating shaft One end of 205 is connected to an air intake fan blade 206, and the periphery of the rotating shaft 205 is connected to a cleaning and installation arc plate 207. Impurity discharge outlets 208 are symmetrically opened on both sides of the air intake pre-filter shell 1. The number of impurity discharge outlets 208 is three, and the peripheries of two impurity discharge outlets 208 are connected to an impurity discharge shell 209. The impurity discharge shell 209 is provided with an impurity sliding groove 210, and the impurity sliding groove 210 is slidably matched with a discharge sliding plate 211. One side of the discharge sliding plate 211 is symmetrically connected to a discharge electric push rod 212, and the discharge electric push rod 212 is connected to the impurity discharge shell 209 through a discharge fixing frame 213. A pressure sensor 214 is installed inside the discharge sliding plate 211, and a dust discharge shell 215 is symmetrically connected to one side of one impurity discharge port 208. A discharge limit plate 10 is slidably matched at the bottom of the discharge sliding plate 211. The discharge limit plate 10 achieves the effect of smooth movement of the discharge sliding plate 211. The discharge limit plate 10 is connected to the air intake pre-filter shell 1. A controller 6 is provided on one side of the air intake pre-filter shell 1. The discharge electric push rod 212 and the pressure sensor 214 are electrically connected to the controller 6.

[0038] Through the above technical solution, three impurity mounting racks 201 are sequentially arranged inside the air intake pre-filter housing 1 along the air intake direction, and the impurity coarse filter 202, the impurity fine filter 203 and the dust filter 204 are respectively installed to form a three-stage filtration. The impurity coarse filter 202 intercepts large particles of impurities, the impurity fine filter 203 filters medium particles, and the dust filter 204 absorbs dust. A rotating shaft 205 is provided in each impurity mounting rack 201, one end of which is connected to the air intake fan blade 206, and the other end is in contact with the filter surface through the cleaning and installation arc plate 207. The rotating shaft 205 is driven to rotate by the airflow, driving the cleaning and installation arc plate 207 to scrape off the attachments on the filter surface. Three impurity discharge ports 208 are symmetrically opened on both sides of the air intake pre-filter housing 1, of which two impurity discharge ports 208 are peripherally connected to the impurity discharge housing 209. An impurity sliding groove 210 is provided inside the impurity discharge housing 209, and a discharge sliding plate 211 is slidably installed in the groove, which is driven to open and close by a discharge electric push rod 212, and a pressure sensor 214 monitors the blocking state of the discharge sliding plate 211 in real time. The third impurity discharge port 208 is connected to the dust discharge housing 215, which is used to discharge extremely fine dust.

[0039] The air flow drives the intake fan blade 206 to drive the rotating shaft 205 to rotate, and the cleaning installation arc plate 207 continuously scrapes the surface of the filter screen to peel off the attached impurities.

[0040] Automatic slag discharge: When the pressure sensor 214 detects abnormal pressure at the discharge sliding plate 211, the controller 6 activates the discharge electric push rod 212 to push the discharge sliding plate 211 to move downward along the impurity sliding groove 210, and opens the impurity discharge port 208. The scraped impurities fall into the outside through the impurity discharge port 208, completing self-cleaning.

[0041] Embodiment 2

[0042] As Figure 6 shown, for the gasoline saw engine intake pre-filtering device according to the embodiment of the present invention, the dust discharge assembly 3 includes a dust discharge pipe 301. The dust discharge pipe 301 is connected to, and a dust discharge valve 302 is installed inside the dust discharge pipe 301. One end of the dust discharge pipe 301 is threadedly connected to a threaded connection sleeve 303, and a dust removal cloth bag 304 is connected to one side of the threaded connection sleeve 303.

[0043] Through the above technical solution, the dust discharge pipe 301 is communicated with the dust discharge housing 215, the dust discharge valve 302 is installed inside, and the dust removal cloth bag 304 is fixed at the end through the threaded connection sleeve 303. When the dust filter screen 204 accumulates dust, the controller 6 opens the dust discharge valve 302, and the air flow guides the dust into the dust removal cloth bag 304 for temporary storage.

[0044] Embodiment 3

[0045] As Figure 7 shown, for the gasoline saw engine intake pre-filtering device according to the embodiment of the present invention, the multi-channel intake adjustment assembly 4 includes an intake installation square pipe 401. A sealing baffle 402 is movably installed inside the intake installation square pipe 401. Limit baffles 403 are symmetrically connected inside the intake installation square pipe 401, and the limit baffles 403 are fixedly connected to the intake installation square pipe 401. One side of the sealing baffle 402 is connected to a thrust spring 406, and the thrust spring 406 is connected to the intake installation square pipe 401. One side of the sealing baffle 402 is connected to a sliding push plate 404, and one side of the sliding push plate 404 is connected to a multi-stage electric push rod 405. The multi-stage electric push rod 405 is connected to the intake installation square pipe 401. The periphery of the multi-stage electric push rod 405 is connected to a push rod installation frame 7, and the push rod installation frame 7 is connected to the intake installation square pipe 401. The multi-stage electric push rod 405 is electrically connected to the controller 6, and an intake groove 8 is opened on one side of the intake pre-filter housing 1.

[0046] Through the above technical solution, a sealing baffle 402 is movably installed in the intake installation square pipe 401, and limiting baffles 403 are provided on both sides to restrict the movement range of the baffle. The sealing baffle 402 is connected to a multi-stage electric push rod 405 through a sliding push plate 404, and a thrust spring 406 provides a restoring force.

[0047] Control logic: The controller 6 controls the telescopic movement of the multi-stage electric push rod 405 according to the engine operating conditions, such as speed and load, and pushes the sealing baffle 402 to adjust the cross-sectional area of the intake passage, so as to realize the dynamic adjustment of the intake air volume.

[0048] Embodiment 4

[0049] As Figure 8 shown, for the gasoline saw engine intake pre-filter device according to the embodiment of the present invention, the intake anti-blocking assembly 5 includes an anti-blocking mounting frame 501, the anti-blocking mounting frame 501 is installed above the intake installation square pipe 401, a leaf filter 502 is installed inside the anti-blocking mounting frame 501, a cleaning motor 503 is installed in the middle of the anti-blocking mounting frame 501, a cleaning plate 504 is connected to one side of the cleaning motor 503, the cleaning motor 503 is electrically connected to the controller 6, and a storage battery 9 is provided outside the intake pre-filter housing 1. The controller 6 is electrically connected to the storage battery 9.

[0050] Through the above technical solution, the anti-blocking mounting frame 501 is fixed above the intake installation square pipe 401, and a leaf filter 502 is installed inside to intercept large-size foreign objects such as external leaves. The cleaning motor 503 drives the cleaning plate 504 to rotate periodically, sweeping away the deposits on the surface of the leaf filter 502 to prevent blockage.

[0051] In order to facilitate the understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0052] To sum up, with the aid of the above technical solution of the present invention, the anti-blocking mounting frame 501 is fixed above the intake installation square pipe 401, and a leaf filter 502 is installed inside to intercept large-size foreign objects such as external leaves. The cleaning motor 503 drives the cleaning plate 504 to rotate periodically, sweeping away the deposits on the surface of the leaf filter 502 to prevent blockage.

[0053] A sealing baffle 402 is movably installed in the intake installation square pipe 401, and limiting baffles 403 are provided on both sides to restrict the movement range of the baffle. The sealing baffle 402 is connected to a multi-stage electric push rod 405 through a sliding push plate 404, and a thrust spring 406 provides a restoring force.

[0054] Control logic: The controller 6 controls the telescopic movement of the multi-stage electric push rod 405 according to the engine operating conditions, such as speed and load, and pushes the sealing baffle 402 to adjust the cross-sectional area of the intake passage, so as to realize the dynamic adjustment of the intake air volume.

[0055] Three impurity mounting racks 201 are sequentially arranged inside the air intake pre-filter housing 1 along the air intake direction, and are respectively installed with a coarse impurity filter 202, a fine impurity filter 203 and a dust filter 204 to form a three-stage filtration. The coarse impurity filter 202 intercepts large particles of impurities, the fine impurity filter 203 filters medium particles, and the dust filter 204 absorbs fine dust. A rotating shaft 205 is provided in each impurity mounting rack 201, one end of which is connected to the air intake fan blade 206, and the other end is in contact with the filter surface through the cleaning and installing arc plate 207. The rotating shaft 205 is driven to rotate by the airflow, driving the cleaning and installing arc plate 207 to scrape off the attachments on the filter surface. Three impurity discharge ports 208 are symmetrically opened on both sides of the air intake pre-filter housing 1, of which two impurity discharge ports 208 are peripherally connected to the impurity discharge housing 209. An impurity sliding groove 210 is provided inside the impurity discharge housing 209, and a discharge sliding plate 211 is slidably installed in the groove, which is driven to open and close by a discharge electric push rod 212, and a pressure sensor 214 monitors the blocking state of the discharge sliding plate 211 in real time. The third impurity discharge port 208 is connected to the dust discharge housing 215, which is used to discharge extremely fine dust.

[0056] The airflow drives the air intake blades 206 to drive the rotating shaft 205 to rotate, and the cleaning and installing arc plate 207 continuously scrapes the surface of the filter screen to remove attached impurities.

[0057] Automatic slag discharge: When the pressure sensor 214 detects abnormal pressure at the discharge sliding plate 211, the controller 6 starts the discharge electric push rod 212, pushes the discharge sliding plate 211 down along the impurity sliding groove 210, and opens the impurity discharge port 208. The scraped impurities fall to the outside through the impurity discharge port 208, completing self-cleaning.

[0058] The dust discharge pipe 301 is connected to the dust discharge housing 215, and a dust discharge valve 302 is installed inside. The end is fixed with a dust bag 304 through a threaded connection sleeve 303. When the dust filter 204 accumulates dust, the controller 6 opens the dust discharge valve 302, and the airflow guides the dust into the dust bag 304 for temporary storage.

[0059] In summary, in actual use, the present invention uses the filtering self-cleaning component 2 to automatically classify and clean impurities during multi-stage filtration, automatically discharge large particles of impurities, and collect dust, thereby solving the problem that the engine intake system of traditional gasoline saws generally adopts a single-stage filtration design, relying on paper filter elements or simple metal meshes to intercept particulate matter. However, under high dust conditions (such as logging and forest operations), this type of filtration method is prone to rapid clogging by dust, resulting in a decrease in intake efficiency, and even causing engine power attenuation or abnormal wear.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gasoline saw engine intake air pre-filter device, characterized in that: It comprises an air intake pre-filter housing (1), a filter self-cleaning assembly (2) is provided inside the air intake pre-filter housing (1), a dust discharge assembly (3) is provided on one side of the filter self-cleaning assembly (2), a multi-channel air intake adjustment assembly (4) is provided on one side of the air intake pre-filter housing (1), and an air intake anti-blocking assembly (5) is provided on one side of the multi-channel air intake adjustment assembly (4); The filtering self-cleaning component (2) comprises an impurity mounting frame (201), wherein the impurity mounting frame (201) is mounted inside the air intake pre-filter housing (1), the number of the impurity mounting frames (201) is three, and an impurity coarse filter (202) is mounted inside the impurity mounting frame (201), one side of the impurity coarse filter (202) is provided with an impurity fine filter (203), and one side of the impurity fine filter (203) is provided with a dust filter (204), the impurity fine filter (203) and the dust filter (204) are respectively mounted inside the other two impurity mounting frames (201), and a rotating shaft (205) is movably connected inside the impurity mounting frame (201), and one end of the rotating shaft (205) is connected to an air intake fan. The blade (206) is connected to the outer periphery of the rotating shaft (205) with a cleaning installation arc plate (207). Impurity discharge ports (208) are symmetrically opened on both sides of the air intake pre-filter housing (1). The number of the impurity discharge ports (208) is three, of which two impurity discharge ports (208) are connected to the outer periphery of an impurity discharge housing (209). An impurity sliding groove (210) is opened inside the impurity discharge housing (209). A discharge sliding plate (211) is slidably matched inside the impurity sliding groove (210). A discharge electric push rod (212) is symmetrically connected to one side of the discharge sliding plate (211). The discharge electric push rod (212) is connected to the impurity discharge housing (209) through a discharge fixing frame (213). A pressure sensor (214) is installed inside the discharge sliding plate (211). A dust discharge housing (215) is symmetrically connected to one side of one impurity discharge port (208).

2. A gasoline saw engine intake air pre-filter device according to claim 1, characterized in that: A discharging limiting plate (10) is slidably matched at the bottom of the discharging sliding plate (211), and the discharging limiting plate (10) is connected to the air intake pre-filter housing (1).

3. A gasoline saw engine intake air pre-filter device according to claim 2, characterized in that: A controller (6) is provided on one side of the air intake pre-filter housing (1), and the discharge electric push rod (212) and the pressure sensor (214) are electrically connected to the controller (6).

4. The gasoline saw engine air intake pre-filter device according to claim 3, characterized in that: The dust discharge assembly (3) comprises a dust discharge pipe (301), the dust discharge pipe (301) and the dust discharge valve (302) are installed inside the dust discharge pipe (301), one end of the dust discharge pipe (301) is threadedly connected to a threaded connection sleeve (303), and one side of the threaded connection sleeve (303) is connected to a dust removal bag (304).

5. The gasoline saw engine air intake pre-filter device according to claim 4, characterized in that: The multi-channel air intake adjustment component (4) comprises an air intake installation square tube (401), a sealing baffle (402) is movably installed inside the air intake installation square tube (401), a limit baffle (403) is symmetrically connected inside the air intake installation square tube (401), the limit baffle (403) is fixedly connected to the air intake installation square tube (401), one side of the sealing baffle (402) is connected to a thrust spring (406), the thrust spring (406) is connected to the air intake installation square tube (401), one side of the sealing baffle (402) is connected to a sliding push plate (404), one side of the sliding push plate (404) is connected to a multi-stage electric push rod (405), and the multi-stage electric push rod (405) is connected to the air intake installation square tube (401).

6. The gasoline saw engine air intake pre-filter device according to claim 5, characterized in that: The multi-stage electric push rod (405) is connected to a push rod mounting frame (7) on its periphery, the push rod mounting frame (7) is connected to the air intake mounting square tube (401), and the multi-stage electric push rod (405) is electrically connected to the controller (6).

7. The gasoline saw engine intake air pre-filter device according to claim 6, characterized in that: An air intake groove (8) is provided on one side of the air intake pre-filter housing (1).

8. The gasoline saw engine intake air pre-filter device according to claim 7, characterized in that: The air intake anti-clogging component (5) comprises an anti-clogging mounting frame (501), the anti-clogging mounting frame (501) is mounted above the air intake mounting square tube (401), a leaf filter (502) is mounted inside the anti-clogging mounting frame (501), a cleaning motor (503) is mounted in the middle of the anti-clogging mounting frame (501), and a cleaning plate (504) is connected to one side of the cleaning motor (503).

9. The gasoline saw engine air intake pre-filter device according to claim 8, characterized in that: The cleaning motor (503) is electrically connected to the controller (6).

10. The gasoline saw engine air intake pre-filter device according to claim 9, characterized in that: A battery (9) is disposed on the periphery of the air intake pre-filter housing (1), and the controller (6) is electrically connected to the battery (9).

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