Engine air intake filter guard

Abstract

The utility model discloses an engine air inlet filtering protection device belongs to automobile engine protection field. The utility model discloses an engine air inlet filtering protection device, including the air inlet cover, the air inlet cover's whole body is passed through and is set up with a plurality of air inlet groove that is circularly distributed, the inside of air inlet cover is provided with the docking assembly, and the docking assembly is used for and the air filter pipe orifice of engine docking. The utility model solves the current engine and adopts the design of installing air filter at the air inlet, and the air inlet pipeline entrance of air filter is not provided with any front protection structure, and all inhaled air is directly filtered into the filter core, resulting in the problem that the filter core bears greater filtering pressure, the utility model adds the dustproof structure at the air inlet position of air filter, can effectively reduce the dust content of the filter core, thereby significantly reduces the filter load of filter core, and the design makes that the large particle dust is intercepted before entering the filter core, avoids its rapid clogging filter material pore.

Description

Technical Field

[0001] This utility model relates to the field of automotive engine protection, specifically an engine air intake filter protection device. Background Technology

[0002] The engine intake filter is a key component installed in the engine intake system. It is mainly used to filter dust, sand, moisture and other impurities in the air to prevent foreign objects from entering the engine and causing wear or damage. Its core includes a multi-layer filter screen. Some designs have waterproof and anti-icing functions to ensure stable engine operation in complex environments. This device can significantly extend engine life and improve fuel efficiency. It is widely used in automobiles, aviation and construction machinery and other fields. Regular maintenance is required to ensure filtration efficiency. Existing engine intake filtration and protection devices typically employ an air filter design installed at the intake, relying on an internal filter element to intercept dust, sand, and other impurities to prevent contaminants from entering the engine. However, this design has certain limitations. Because the air filter's intake duct inlet lacks any pre-protection structure, all intake air directly enters the filter element for filtration, resulting in the filter element experiencing significant filtration pressure. In environments with abundant sand or high dust levels, a large amount of particulate matter rapidly accumulates on the filter element surface, increasing airflow resistance, reducing engine intake efficiency, and accelerating filter element clogging, significantly shortening its lifespan. Consequently, users need to frequently replace the filter element, increasing maintenance costs and impacting the continuous operating efficiency of the equipment.

[0003] In summary, to improve the filtration efficiency of the engine intake system and reduce maintenance costs, it is necessary to address the problem of excessive filter element load and frequent replacement caused by the lack of pre-protection in existing air filters. This would enable the intake device to effectively intercept large particulate pollutants in the initial stage, reduce the burden on the filter element, thereby extending its service life and ensuring the stable operation of the engine. Summary of the Invention

[0004] The purpose of this utility model is to provide an engine air intake filter protection device. By adding a dustproof structure at the air intake of the air filter, the load on the filter element and the replacement frequency are reduced, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an engine air intake filter protection device, including an air intake cover, with multiple circumferentially distributed air intake slots extending through the circumference of the air intake cover. A docking assembly is provided inside the air intake cover for docking with the engine's air filter port. A fixing seat is connected to the air intake cover, with multiple circumferentially distributed through slots on the fixing seat. An installation mechanism is provided on both the fixing seat and the air intake cover for positioning the air intake cover and the fixing seat. A through hole is provided at the center of the fixing seat, with a bracket installed inside the through hole. A bearing seat is fixed on the bracket, and a rotating shaft is connected to the inner side of the bearing seat. A fan blade is fixed on the rotating shaft. An external thread is provided on the outer side of the fixing seat, and a slot is provided on the outer side of the fixing seat. A protective cover is connected to the outer side of the fixing seat via the external thread. A discharge pipe is installed on the outer side of the protective cover corresponding to the slot position. A collection mechanism is connected to the end of the discharge pipe for collecting dust.

[0006] Preferably, the docking assembly includes a connecting pipe fixed inside the air intake shroud and a variable diameter sealing ring installed inside the connecting pipe. The bottom of the connecting pipe extends through the bottom of the air intake shroud, and the connecting pipe is connected to the air filter port of the engine through the variable diameter sealing ring.

[0007] Preferably, the mounting mechanism includes a fixing component and a sealing component. The fixing component is mounted on the fixing base and is used to fix the air intake hood to the fixing base. The sealing component is used to improve the airtightness between the fixing base and the air intake hood.

[0008] Preferably, the fixing assembly includes multiple fixing plates fixed on the air intake hood and fixing bolts connected to the fixing plates. The multiple fixing plates are circumferentially distributed, and the air intake hood and the fixing seat are fixedly connected by the fixing bolts.

[0009] Preferably, the sealing assembly includes a sealing groove formed on the air intake shroud and a sealing ring fixed on the mounting base, the sealing ring being adapted to the sealing groove.

[0010] Preferably, the collection mechanism includes an anti-overflow component and a dust collection component. The anti-overflow component is installed at the end of the discharge pipe, and the dust collection component is connected to the lower side of the anti-overflow component. The anti-overflow component is used to prevent dust from flowing back into the fixed seat, and the dust collection component is used to collect dust.

[0011] Preferably, the overflow prevention assembly includes a guide pipe fixed to the end of the discharge pipe, a guide plate fixed inside the guide pipe, a connecting pipe fixed to the bottom of the guide pipe, and multiple baffles disposed inside the connecting pipe. The guide plate and the baffles are both inclined and the multiple baffles are arranged in an alternating manner.

[0012] Preferably, the dust collection assembly includes a collection box fixed to the bottom of the connecting pipe, a drawer disposed inside the collection box, a sealing plate fixed to the drawer, a pressure relief hole opened on the sealing plate, and a filter screen disposed inside the pressure relief hole. The pressure relief hole penetrates the side wall of the drawer, and the drawer is slidably connected to the collection box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention effectively reduces the amount of dust entering the filter element by adding a dustproof structure at the air inlet of the air filter, thereby significantly reducing the filtration load on the filter element. This design intercepts large dust particles before they enter the filter element, preventing them from quickly clogging the filter media pores. This not only extends the service life of the filter element but also reduces maintenance costs caused by frequent filter element replacements. At the same time, because the front-mounted protective structure shares some of the filtration tasks, the airflow resistance of the filter element increases more slowly, which helps maintain the intake efficiency of the engine, ensures the stability of power output, improves the overall operational reliability of the engine, and reduces the risk of performance degradation caused by filter element clogging. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the fan blade of this utility model; Figure 4 This is a three-dimensional structural diagram of the air intake cover of this utility model; Figure 5 This is a three-dimensional structural diagram of the fixing base of this utility model; Figure 6 This is a schematic diagram of the collection mechanism of this utility model.

[0015] In the diagram: 1. Air intake hood; 2. Air intake slot; 31. Connecting pipe; 32. Variable diameter sealing ring; 4. Fixing base; 5. Through slot; 61. Fixing plate; 62. Fixing bolt; 63. Sealing groove; 7. Through hole; 8. Bracket; 9. Bearing seat; 10. Shaft; 11. Fan blade; 12. External thread; 13. Groove; 14. Protective cover; 15. Discharge pipe; 161. Guide pipe; 162. Guide plate; 163. Connecting pipe; 164. Baffle; 165. Collection box; 166. Drawer; 167. Sealing rubber plate; 168. Filter screen. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments.

[0017] Refer to the instruction manual appendix Figures 1 to 6An engine intake port filter protection device includes an intake shroud 1. Multiple circumferentially distributed intake slots 2 are formed around the shroud 1. A docking assembly is installed inside the intake shroud 1 to connect with the engine's air filter port. A mounting base 4 is connected to the intake shroud 1. Multiple circumferentially distributed through slots 5 are formed on the mounting base 4. An installation mechanism is provided on both the mounting base 4 and the intake shroud 1 to position the intake shroud 1 and the mounting base 4. A through hole 7 is formed at the center of the mounting base 4. A bracket 8 is installed inside the through hole 7. A bearing seat 9 is fixed on the bracket 8. A rotating shaft 10 is connected to the inner side of the bearing seat 9. A fan blade 11 is fixed on the rotating shaft 10. An external thread 12 is provided on the outer side of the mounting base 4. A slot 13 is formed on the outer side of the mounting base 4. A protective cover 14 is connected to the outer side of the mounting base 4 via the external thread 12. A discharge pipe 15 is installed on the outer side of the protective cover 14 corresponding to the slot 13. A collection mechanism is connected to the end of the discharge pipe 15 to collect dust.

[0018] It should be noted that the external dust-laden airflow first enters the device through the air intake slot 2 of the air intake hood 1. The fan blades 11 rotate at high speed under the drive of the airflow, generating a strong centrifugal force that throws the dust particles in the airflow toward the inner wall of the protective cover 14. The dust falls into the discharge pipe 15 through the slot 13 and finally enters the collection mechanism. The clean airflow after the dust is separated converges through the through hole 7 of the fixed seat 4 and flows into the docking assembly through the through hole 7 toward the air filter. This design effectively pre-separates and removes dust before the air enters the air filter element, significantly reducing the burden on the subsequent filter element.

[0019] Refer to the instruction manual appendix Figure 2 The docking assembly includes a docking pipe 31 fixed inside the air intake shroud 1 and a variable diameter sealing ring 32 installed inside the docking pipe 31. The bottom of the docking pipe 31 penetrates the bottom end of the air intake shroud 1, and the docking pipe 31 is connected to the air filter port of the engine through the variable diameter sealing ring 32.

[0020] It should be noted that the connecting pipe 31, as a key channel connecting the main body of the device and the engine air filter, has a through-hole design at the bottom that ensures smooth airflow. The design of the variable diameter sealing ring 32 allows the connecting pipe 31 to be adapted to air filter ports of various diameters, providing good versatility and installation flexibility, and ensuring the sealing of the joint to prevent unfiltered air leakage.

[0021] Refer to the instruction manual appendix Figures 2 to 5 The installation mechanism includes a fixing component and a sealing component. The fixing component is installed on the fixing base 4 and is used to fix the air intake hood 1 to the fixing base 4. The sealing component is used to improve the air tightness between the fixing base 4 and the air intake hood 1.

[0022] It should be noted that the fixing components ensure a stable connection between the air intake hood 1 and the mounting base 4, maintaining the stability of the overall structure of the device. At the same time, the sealing components effectively prevent external dust or moisture from entering the device through the connection gap between the air intake hood 1 and the mounting base 4, ensuring the effectiveness of the pre-filtration process and the cleanliness of the internal airflow.

[0023] Refer to the instruction manual appendix Figures 2 to 5 The fixing assembly includes multiple fixing pieces 61 fixed on the air intake shroud 1 and fixing bolts 62 connected to the fixing pieces 61. The multiple fixing pieces 61 are circumferentially distributed, and the air intake shroud 1 and the fixing seat 4 are fixedly connected by the fixing bolts 62.

[0024] It should be noted that the circumferentially distributed fixing plates 61, together with the fixing bolts 62, provide uniform and reliable fastening force, firmly locking the air intake cover 1 onto the fixing seat 4, ensuring that the device is stably connected under conditions such as engine vibration and will not loosen or fall off.

[0025] Refer to the instruction manual appendix Figures 2 to 5 The sealing assembly includes a sealing groove 63 formed on the air intake shroud 1 and a sealing ring fixed on the mounting base 4, the sealing ring being adapted to the sealing groove 63.

[0026] It should be noted that when the air intake hood 1 and the fixed base 4 are connected and pressed together by the fixing plate 61 and the fixing bolt 62, the sealing rubber ring fixed on the fixed base 4 is tightly pressed into the sealing groove 63 of the air intake hood 1, forming an effective sealing interface, which completely blocks the passage of external pollutants from the joint surface of the two into the internal airflow of the device.

[0027] Refer to the instruction manual appendix Figure 6 The collection mechanism includes an anti-overflow component and a dust collection component. The anti-overflow component is installed at the end of the discharge pipe 15, and the dust collection component is connected to the lower side of the anti-overflow component. The anti-overflow component is used to prevent dust from flowing back into the fixed seat 4, and the dust collection component is used to collect dust.

[0028] It should be noted that the anti-overflow component prevents the dust that has been separated and fallen into the dust collection component from flowing back into the fixed base 4 when the airflow fluctuates. The dust collection component is responsible for storing the separated dust, which is convenient for subsequent cleaning and maintenance.

[0029] Refer to the instruction manual appendix Figure 6 The overflow prevention assembly includes a guide pipe 161 fixed to the end of the discharge pipe 15, a guide plate 162 fixed inside the guide pipe 161, a connecting pipe 163 fixed to the bottom of the guide pipe 161, and multiple baffles 164 disposed inside the connecting pipe 163. The guide plate 162 and the baffles 164 are both inclined, and the multiple baffles 164 are arranged in an alternating manner.

[0030] It should be noted that the guide plate 162 guides the dust flow to the connecting pipe 163. The staggered and inclined baffles 164 inside the connecting pipe 163 form a maze-like path. On the one hand, the dust is allowed to fall smoothly into the dust collection component below under the action of gravity. On the other hand, the inclined baffles 164 effectively block the dust from rising and flowing back when the airflow is reversed, ensuring that the dust can only flow into the dust collection component in one direction.

[0031] Refer to the instruction manual appendix Figure 6 The dust collection assembly includes a collection box 165 fixed to the bottom of the connecting pipe 163, a drawer 166 disposed inside the collection box 165, a sealing plate 167 fixed to the drawer 166, a pressure relief hole opened on the sealing plate 167, and a filter screen 168 disposed inside the pressure relief hole. The pressure relief hole penetrates through the side wall of the drawer 166, and the drawer 166 is slidably connected to the collection box 165.

[0032] It should be noted that the separated dust eventually falls into the drawer 166 inside the collection box 165 for storage. The sealing plate 167 improves the sealing between the drawer 166 and the collection box 165, reducing dust escape. The pressure relief hole and its internal filter 168 allow a small amount of gas falling with the dust to escape from the drawer 166, balancing the internal and external air pressure and preventing air pressure from hindering the dust from falling. At the same time, the filter 168 ensures that the dust will not escape into the environment through the pressure relief hole. The drawer 166 can be easily pulled out to clean the accumulated dust.

[0033] Working principle: When the engine is operating, the external dust-laden airflow first enters the device through the air intake slots 2 around the air intake shroud 1. The airflow drives the fan blades 11 to rotate at high speed around the shaft 10, generating centrifugal force that throws dust particles toward the inner wall of the protective cover 14. The separated dust slides along the inner wall and falls into the discharge pipe 15 through the slot 13 on the outside of the fixing seat 4. Subsequently, it is guided by the guide pipe 161 and the guide plate 162 to the connecting pipe 163. The labyrinth path formed by the baffle 164 inside the connecting pipe 163 ensures that the dust falls unidirectionally into the collection box 1 under the action of gravity. In drawer 166 of 65, backflow is prevented. A small amount of gas is discharged through the filter screen 168 of the pressure relief hole of drawer 166, while dust is sealed and stored by the sealing rubber plate 167. At the same time, the clean airflow after dust removal converges towards the center of the fixed base 4 under centrifugal force, enters the connecting pipe 31 through its through hole 7, and is sent to the air filter port. Throughout the process, the air intake hood 1 and the fixed base 4 are pressed together by the fixing plate 61 and the fixing bolt 62. The sealing rubber ring is embedded in the sealing groove 63 to ensure the airtightness of the device and prevent untreated air from seeping in.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An engine air intake filter protection device, comprising an air intake shroud (1), characterized in that, The air intake hood (1) has multiple circumferentially distributed air intake slots (2) running through its entire body. The air intake hood (1) has a docking assembly inside, which is used to dock with the air filter port of the engine. A mounting base (4) is connected to the air intake hood (1). The mounting base (4) has multiple circumferentially distributed through slots (5). The mounting base (4) and the air intake hood (1) are provided with an installation mechanism, which is used to position the air intake hood (1) and the mounting base (4). A through hole (7) is opened at the center of the mounting base (4). A bracket is installed inside the through hole (7). (8) A bearing seat (9) is fixed on the bracket (8). A rotating shaft (10) is connected to the inner side of the bearing seat (9). A fan blade (11) is fixed on the rotating shaft (10). An external thread (12) is provided on the outer side of the fixed seat (4). A slot (13) is opened on the outer side of the fixed seat (4). A protective cover (14) is connected to the outer side of the fixed seat (4) through the external thread (12). A discharge pipe (15) is installed on the outer side of the protective cover (14) corresponding to the position of the slot (13). A collection mechanism is connected to the end of the discharge pipe (15). The collection mechanism is used to collect dust.

2. The engine air intake filter protection device according to claim 1, characterized in that, The docking assembly includes a connecting pipe (31) fixed inside the air intake shroud (1) and a variable diameter sealing ring (32) installed inside the connecting pipe (31). The bottom of the connecting pipe (31) extends through the bottom of the air intake shroud (1), and the connecting pipe (31) is connected to the air filter port of the engine through the variable diameter sealing ring (32).

3. The engine air intake filter protection device according to claim 1, characterized in that, The mounting mechanism includes a fixing component and a sealing component. The fixing component is mounted on the fixing seat (4) and is used to fix the air intake hood (1) and the fixing seat (4). The sealing component is used to improve the airtightness between the fixing seat (4) and the air intake hood (1).

4. The engine air intake filter protection device according to claim 3, characterized in that, The fixing assembly includes multiple fixing pieces (61) fixed on the air intake hood (1) and fixing bolts (62) connected to the fixing pieces (61). The multiple fixing pieces (61) are distributed in a circle, and the air intake hood (1) and the fixing seat (4) are fixedly connected by the fixing bolts (62).

5. The engine air intake filter protection device according to claim 3, characterized in that, The sealing assembly includes a sealing groove (63) formed on the air intake shroud (1) and a sealing ring fixed on the mounting base (4), the sealing ring being adapted to the sealing groove (63).

6. The engine air intake filter protection device according to claim 1, characterized in that, The collection mechanism includes an anti-overflow component and a dust collection component. The anti-overflow component is installed at the end of the discharge pipe (15), and the dust collection component is connected to the lower side of the anti-overflow component. The anti-overflow component is used to prevent dust from flowing back into the fixed seat (4), and the dust collection component is used to collect dust.

7. The engine air intake filter protection device according to claim 6, characterized in that, The overflow prevention assembly includes a guide pipe (161) fixed at the end of the discharge pipe (15), a guide plate (162) fixed inside the guide pipe (161), a connecting pipe (163) fixed at the bottom of the guide pipe (161), and multiple baffles (164) disposed inside the connecting pipe (163). The guide plate (162) and the baffles (164) are both inclined and the multiple baffles (164) are arranged in an alternating manner.

8. The engine air intake filter protection device according to claim 7, characterized in that, The dust collection assembly includes a collection box (165) fixed to the bottom of the connecting pipe (163), a drawer (166) disposed inside the collection box (165), a sealing plate (167) fixed to the drawer (166), a pressure relief hole opened on the sealing plate (167), and a filter screen (168) disposed inside the pressure relief hole. The pressure relief hole penetrates the side wall of the drawer (166), and the drawer (166) is slidably connected to the collection box (165).

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