A foreign body interception device for the air intake of a turbojet engine

Abstract

The present invention belongs to the technical field of turbojet engines and discloses a foreign body interception device for the air intake of a turbojet engine. The device comprises an interception net, an interception cover of the interception net is arranged at the air intake of the turbojet engine, the interception net comprises a pre-treatment layer and a filter assembly in a layered design, the pre-treatment layer and the filter assembly are arranged along the air intake direction; an interception frame is arranged on a side of the pre-treatment layer away from the air intake, the pre-treatment layer is attached to the inner wall surface of the interception frame, and a starter motor for starting the turbojet engine is installed on the interception frame; a cleaning frame is connected to a cleaning motor installed on the interception frame in a transmission manner, the cleaning frame is adapted to the pre-treatment layer, and the cleaning frame is slidably arranged with the outer side surface of the pre-treatment layer to clean foreign bodies on the surface of the pre-treatment layer. The device has a compact structure and is easy to use. It can effectively intercept foreign bodies from entering the turbojet engine and can clean the intercepted foreign bodies at the same time, thereby avoiding engine performance degradation or even damage caused by foreign bodies and improving the safety of the turbojet engine.

Description

Technical Field

[0001] The invention belongs to the technical field of turbojet engines, and in particular relates to a foreign matter interception device for an air inlet of a turbojet engine. Background Art

[0002] In the aviation industry, turbojet engines serve as the primary power source for aircraft, and their performance and reliability are directly linked to flight safety. The air intake of a turbojet engine is a critical point where air enters the engine. Ingestion of foreign matter (such as birds, dust, and hail) can not only affect engine efficiency but, in severe cases, can also lead to engine damage or even flight accidents.

[0003] In the existing technology, there is no device designed specifically for intercepting foreign objects at the air intake of a turbojet engine. It only uses a metal mesh or grille as a preliminary pretreatment layer to block the entry of foreign objects. Although this method can reduce the entry of large foreign objects, it is not good at intercepting small impurities. Reducing the aperture of the metal mesh or grille will reduce the smoothness of the air intake, making it difficult to balance air permeability and interception efficiency. Too small an aperture can easily lead to increased airflow resistance, affecting engine performance. At the same time, after long-term use, the metal mesh or grille is easy to clog and difficult to clean, and the maintenance cost is high. In addition, for some lightweight, high-speed foreign objects, the interception effect is limited and cannot be achieved.

[0004] Therefore, the present application designs a turbojet engine air intake foreign body interception device to solve the above technical problems. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention proposes a foreign object interception device for the air intake of a turbojet engine to solve the problem that when the turbojet engine is running, foreign objects cover or directly enter the engine air intake, causing damage to the internal components of the engine.

[0006] To achieve the above-mentioned object, the present invention provides a foreign body interception device for an air intake of a turbojet engine, comprising:

[0007] An interception net, wherein the interception net interception cover is arranged at the air inlet of the turbojet engine, and the interception net includes a pretreatment layer and a filter component in a layered design, and the pretreatment layer and the filter component are arranged along the air inlet direction;

[0008] An interceptor frame is provided on a side of the pretreatment layer away from the air inlet, the pretreatment layer is attached to an inner wall surface of the interceptor frame, and a starter motor for starting the turbojet engine is mounted on the interceptor frame;

[0009] A cleaning frame is connected to a cleaning motor installed on the intercepting frame, the cleaning frame is adapted to the pretreatment layer, and the cleaning frame is slidably arranged on the outer side surface of the pretreatment layer to clean foreign matter on the surface of the pretreatment layer.

[0010] Preferably, the pretreatment layer is arranged in an arc shape, and the pretreatment layer bulges away from the air inlet.

[0011] Preferably, the filter assembly includes a main intercepting layer and a filter layer arranged in layers, the main intercepting layer is arranged between the filter layer and the pretreatment layer, and the main intercepting layer and the filter layer are adapted to the pretreatment layer.

[0012] Preferably, a connecting groove is provided on the cleaning rack, a sliding block is slidably arranged in the connecting groove, and the sliding block is transmission-connected to a movable component arranged on the cleaning rack; a plurality of cleaning brushes are provided on the sliding block, and the cleaning brushes are in sliding contact with the surface of the pretreatment layer.

[0013] Preferably, the movable component includes a driving groove provided on the cleaning frame, a rotating block is rotatably connected in the driving groove, the rotating block is connected to an eccentric wheel via a connecting rod, and the eccentric wheel is connected to a force frame embedded in the side wall of the sliding block.

[0014] Preferably, a guide groove is provided on the side wall of the connecting groove, a guide block is slidably connected in the guide groove, the guide block extends out of the guide groove and is fixed to the side wall of the sliding block; a reset spring is provided between the guide block and the bottom end of the guide groove.

[0015] Preferably, a plurality of driving rods are provided in the driving groove, the output end of the driving rod is transmission-connected to the driving block movably provided in the driving groove, the center of the driving block is slidingly connected to a prismatic driving rod, and the top end of the driving rod is transmission-connected to the bottom end of the rotating block.

[0016] Preferably, the side wall of the driving groove is provided with a plurality of spirally arranged torsion grooves, and a torsion block is slidably connected in the torsion groove. The torsion block extends out of the torsion groove and is fixed to the side wall of the driving block.

[0017] Preferably, a connecting frame is provided on the intercepting frame, and the cleaning motor is fixedly mounted on one end of the connecting frame away from the intercepting frame; a control module is provided in the connecting frame, and the control module is electrically connected to the starting motor and the cleaning motor respectively.

[0018] Preferably, an air volume detection sensor is provided in the filter layer, and the air volume detection sensor is electrically connected to the control module.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects: the present invention discloses a device for intercepting foreign matter in the air intake of a turbojet engine. The interception net cover with a multi-layer design is arranged at the air intake position of the turbojet engine, which can effectively intercept foreign matter from the outside and prevent foreign matter from clogging the air intake and affecting the power characteristics of the turbojet engine; the interception net is arranged in layers through a pre-treatment layer and a filter component. Under the premise of not affecting the air intake performance, the multi-layer interception of foreign matter improves the efficiency and success rate of interception, effectively avoids the blockage of the air intake, and is convenient for cleaning; the interception frame is arranged at the air intake position for fixing the interception net, which improves the strength of the interception net and avoids the turbojet engine from being easily damaged when it moves quickly The problem of bad weather is solved, and safety is improved; the starting motor is installed on the intercepting frame and can be used as a power source for starting the turbojet engine, which is convenient for normal use; the output shaft of the cleaning motor on the intercepting frame is connected to the cleaning frame, which can drive the cleaning frame to clean the surface of the pretreatment layer outside the intercepting net. When foreign matter is adhered to the outside of the pretreatment layer and causes the intake volume to change, the control module controls the cleaning motor to start, and drives the cleaning frame to clean the surface of the pretreatment layer to remove the adhered foreign matter, restore the intake volume of the turbojet engine, and ensure that it can provide power normally; after the cleaning is completed, the control module controls the cleaning motor to stop, which reduces power consumption and does not affect the power performance of the turbojet engine.

[0020] The invention has a compact structure and is easy to use. It can effectively intercept foreign matter from outside from entering the turbojet engine and can clean the intercepted foreign matter at the same time, thereby avoiding engine performance degradation or even damage caused by the foreign matter and improving the safety of the turbojet engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0022] Figure 1 This is an axial view of the foreign body interception device for the air inlet of a turbojet engine according to the present invention;

[0023] Figure 2 This is a schematic structural diagram of a foreign body interception device for an air intake of a turbojet engine according to the present invention;

[0024] Figure 3 For the present invention Figure 2 A partial enlarged view of middle A;

[0025] Figure 4 This is a schematic diagram of the structure of the interception net of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the sliding block in the second embodiment of the present invention;

[0027] Figure 6 Figure 1 of the present invention Figure 5 A partial enlarged view of middle B;

[0028] Figure 7 is a schematic diagram of an eccentric frame of the present invention;

[0029] In the figure: 1. interception net; 2. air inlet; 3. pretreatment layer; 4. interception frame; 5. starting motor; 6. cleaning frame; 7. cleaning motor; 8. main interception layer; 9. filter layer; 10. connecting groove; 11. sliding block; 12. cleaning brush; 13. driving groove; 14. rotating block; 15. connecting rod; 16. eccentric wheel; 17. force frame; 18. guide groove; 19. guide block; 20. return spring; 21. driving rod; 22. driving block; 23. transmission rod; 24. transmission hole; 25. guide ring; 26. transmission block; 27. torsion groove; 28. torsion block; 29. connecting frame; 30. control module; 31. air volume detection sensor; 32. speed sensor; 33. signal line; 34. support ring; 35. adapter groove; 36. clutch; 37. connecting block; 38. outer shield. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The TCU of a turbojet engine is a device specifically used to control the working state of the turbojet engine.

[0032] 1. Definition and Function

[0033] The TCU is the core control unit of a turbojet engine. It receives data from various engine sensors, such as temperature, pressure, and speed, and accurately adjusts the engine's operating state based on this data and pre-set control algorithms. Its main functions include but are not limited to:

[0034] Monitor engine parameters: Real-time monitoring of various engine operating parameters to ensure that the engine operates within a safe and stable range.

[0035] Adjust the engine operating status: Based on the monitored data, the TCU will adjust the engine's fuel supply, air flow, etc. to optimize the engine's performance and efficiency.

[0036] Fault diagnosis and protection: The TCU also has a fault diagnosis function that can promptly detect and report potential engine problems, while taking necessary protective measures to prevent the fault from further expanding.

[0037] 2. Structure and Control Method

[0038] The TCU of a turbojet engine typically consists of multiple subsystems and modules, such as sensor interfaces, data processing units, and control algorithm modules. These subsystems and modules work together to achieve precise control of the engine.

[0039] In terms of control, TCUs typically use a closed-loop control system. This system continuously adjusts the control signal based on the deviation between the actual engine operating status and the preset target, achieving precise regulation of the engine's operating state.

[0040] 3. Application and Advantages

[0041] TCU is widely used in turbojet engines, especially in aviation, aerospace, military and other fields. Its advantages are mainly reflected in the following aspects:

[0042] Improve engine performance: By precisely controlling engine parameters such as fuel supply and air flow, the TCU can significantly improve engine power performance and fuel economy.

[0043] Enhanced engine reliability: The TCU has fault diagnosis and protection functions, which can promptly detect and address potential engine problems, thereby improving engine reliability and safety.

[0044] Reduce maintenance costs: By precisely controlling the engine's operating status, the TCU can reduce engine wear and failure rates, thereby reducing maintenance costs and operating costs.

[0045] 4. Development Trends

[0046] With the continuous advancement of technology and the expansion of its applications, the TCU of turbojet engines is also undergoing continuous development and improvement. Future TCUs will be more intelligent, integrated, and modular, with enhanced fault diagnosis capabilities and higher control precision. At the same time, with the continuous development of new energy technologies, TCUs will also face more challenges and opportunities to adapt to the needs of new energy turbojet engines.

[0047] In summary, the TCU of a turbojet engine is one of the core components of the engine control system, and is of great significance in improving engine performance, enhancing reliability, and reducing maintenance costs.

[0048] Regarding the turbojet engine clutch in this application, its specific principles can be referred to the patent disclosed in the title "Turbojet Engine Clutch." It includes a clutch body, a sleeve, a return spring, and an apron. The clutch body is provided with a stepped through-hole and a wedge block. One end of the clutch body is provided with a conical recessed groove for accommodating the apron. The return spring is disposed at the front end of the stepped through-hole. As shown in the accompanying diagram, the sleeve is provided with a through-hole that mates with the wedge block and is inserted into the through-hole. A rubber ring is disposed above the return spring within the conical recessed groove of the clutch body, enclosing the sleeve, wedge block, and return spring. The rubber ring also serves to prevent dust and debris, thereby extending the service life of the turbojet engine clutch.

[0049] The function of the wedge is: when the wedge rotates at high speed, it moves forward under the action of centrifugal force and generates a positive pressure, which causes the rubber ring and the front nut to engage, thereby starting the engine.

[0050] The working principle of this invention is as follows: the turbojet engine clutch assembly is installed on the output shaft of the electric motor. During high-speed rotation, the wedge moves forward under the action of centrifugal force and generates a positive pressure to engage the rubber ring and the front nut to achieve the purpose of starting. After the speed reaches the set value, the electric motor stops under the program control of the turbojet engine ECU controller, and the wedge moves back to its original position under the action of the return spring, completing its function of clutch starting the engine.

[0051] At the same time, another invention discloses another micro-turbojet engine clutch, which is composed of a shaft sleeve, a clutch wheel, a return spring, a pin, a friction sleeve, and a machine screw.

[0052] The sleeve consists of a first sleeve body and a second sleeve body. The top of the second sleeve body is connected to the bottom of the first sleeve body. The first sleeve through-hole in the second sleeve body is connected and coaxially arranged. The outer diameter of the second sleeve body is larger than that of the first sleeve body. An upper step is formed on the outer side of the first sleeve body, and a lower step is formed on the outer side of the second sleeve body. The sleeve is made of high-strength stainless steel and is machined by lathing to a surface finish of less than 0.8 and a tolerance of less than 0.05 mm.

[0053] The clutch wheel consists of a first clutch wheel body and a second clutch wheel body. The top of the second clutch wheel body is connected to the bottom of the first clutch wheel body. The first clutch wheel through-hole therein is connected to the second clutch wheel through-hole and is coaxially arranged. A stopper is provided on the inner wall of the first clutch wheel body, extending toward the center of the first clutch wheel through-hole. The inner wall of the stopper forms a first step. The inner diameter of the first clutch wheel through-hole is smaller than that of the second clutch wheel through-hole. Consequently, the inner wall of the first clutch wheel body forms a second step, and the inner wall of the second clutch wheel body forms a third step. The clutch wheel is made of high-hardness alloy steel, machined by turning and milling, and has a rust-proof surface treatment. The inner wall finish is less than 0.8, and the tolerance is less than 0.05 mm.

[0054] The spiral groove is arranged on the first clutch wheel body, the end of the spiral groove is connected to the flat groove, and the surface finish of the groove is less than 0.8.

[0055] A return spring is installed between the sleeve and the clutch wheel, located between the stopper and the second sleeve body. It features a rust-proof polish. A pin is inserted through the spiral groove, passing through the second sleeve body and flush with the clutch wheel surface. A machine screw is installed through the second sleeve body to hold the pin in place. The friction sleeve is installed through the second clutch wheel body, with its lower surface 2-5 mm higher than the lower surface of the clutch wheel.

[0056] During operation, the sleeve rotates axially, and the pin slides in the spiral groove of the clutch wheel, overcoming the elastic force of the return spring and pushing the clutch wheel forward. After the sleeve stops rotating, the clutch wheel is retracted along the spiral groove of the clutch wheel by the return spring and its own inertia.

[0057] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] Example 1

[0059] Reference Figures 1-4 As shown, this embodiment provides a foreign object interception device for an air inlet of a turbojet engine, comprising:

[0060] The interception net 1, the interception cover of the interception net 1 is arranged at the air inlet 2 of the turbojet engine, and the interception net 1 includes a pre-treatment layer 3 and a filter component in a layered design, and the pre-treatment layer 3 and the filter component are arranged along the air inlet direction;

[0061] An interception frame 4 is provided on a side of the pretreatment layer 3 away from the air inlet 2, the pretreatment layer 3 is attached to the inner wall surface of the interception frame 4, and a starter motor 5 for starting the turbojet engine is installed on the interception frame 4;

[0062] The cleaning frame 6 is connected to the cleaning motor 7 installed on the intercepting frame 4, and the cleaning frame 6 is adapted to the pretreatment layer 3. The cleaning frame 6 is slidably arranged with the outer side surface of the pretreatment layer 3 to clean foreign matter on the surface of the pretreatment layer 3.

[0063] The present invention discloses a device for intercepting foreign matter in the air intake 2 of a turbojet engine. A multi-layer interception net 1 is provided at the air intake 2 of the turbojet engine, which can effectively intercept foreign matter from the outside and prevent the foreign matter from clogging the air intake 2 and affecting the power characteristics of the turbojet engine. The interception net 1 is arranged in layers through a pretreatment layer 3 and a filter assembly. Under the premise of not affecting the air intake performance, the device intercepts foreign matter at multiple levels, improves the efficiency and success rate of interception, effectively avoids clogging of the air intake 2, and is convenient for cleaning. The interception frame 4 is provided at the air intake 2 and is used to fix the interception net 1, thereby improving the strength of the interception net 1, avoiding the problem that the turbojet engine is easily damaged when moving rapidly, and improving safety. The starting electric The machine 5 is installed on the interception frame 4 and can be used as a power source for starting the turbojet engine, which is convenient for normal use. The output shaft of the cleaning motor 7 on the interception frame 4 is connected to the cleaning frame 6, which can drive the cleaning frame 6 to clean the surface of the pre-treatment layer 3 outside the interception net 1. When foreign matter is adhered to the outside of the pre-treatment layer 3 and causes the air intake to change, the control module 30 controls the cleaning motor 7 to start, drives the cleaning frame 6 to clean the surface of the pre-treatment layer 3, removes the adhered foreign matter, restores the air intake of the turbojet engine, and ensures that it can provide power normally. After cleaning is completed, the control module 30 controls the cleaning motor 7 to stop, reduces power consumption, and does not affect the power performance of the turbojet engine. The present invention has a compact structure and is easy to use. It can effectively intercept foreign matter from the outside to enter the turbojet engine. At the same time, it can clean the intercepted foreign matter, avoid engine performance degradation or even damage caused by foreign matter, and improve the safety of the turbojet engine.

[0064] In one embodiment of the present application, a plurality of cleaning brushes 12 are provided on the cleaning rack 6. The cleaning brushes 12 can be used to scrub foreign matter adhered to the surface of the interception net 1. The foreign matter can be processed during use without stopping the machine for processing, which is convenient for continuous use.

[0065] In the same embodiment of the present application, the output shaft of the starter motor 5 extends into the air inlet 2 and is connected to the clutch 36 through transmission. The clutch 36 can be conveniently connected to the starting shaft of the turbojet engine. When working, the starter motor 5 starts and rotates forward, driving the clutch 36 to engage with the starting shaft, and then driving the compressor wheel of the turbojet engine to rotate to realize compressed air intake. When the start is completed, the turbojet engine runs stably, and the starter motor 5 is controlled to stop. At this time, the clutch 36 is separated from the starting shaft, and the starting shaft does not affect the starter motor 5.

[0066] In one embodiment of the present application, the output shaft of the cleaning motor 7 is drivingly connected to a connecting block 37 , and the end of the cleaning frame 6 is fixedly mounted on the connecting block 37 .

[0067] In one embodiment of the present application, the clutch 36 is a conventional component of a turbojet engine, and those skilled in the art are aware of its operating principle and method, which will not be described in detail here.

[0068] In a further optimized solution, the pretreatment layer 3 is arranged in an arc shape, and the pretreatment layer 3 is convex in the direction away from the air inlet 2. The interception net 1 is arranged to be a convex curved surface backward, so that the outer wall of the pretreatment layer 3 is a curved surface, which can intercept most foreign matter and slide it away to avoid the accumulation of foreign matter.

[0069] In one embodiment of the present application, the pretreatment layer 3 is made of high-strength, high-permeability fiber material. After large-volume foreign objects hit the pretreatment layer 3, they are bounced off and diffused around, which is used to initially block larger foreign objects and effectively prevent the accumulation of foreign objects from causing air intake obstruction.

[0070] A further optimized solution is that the filter assembly includes a layered main interception layer 8 and a filter layer 9. The main interception layer 8 is arranged between the filter layer 9 and the pretreatment layer 3, and the main interception layer 8 and the filter layer 9 are adapted to the pretreatment layer 3. The main interception layer 8 and the filter layer 9 are arranged in a close-fitting manner along the air intake direction, and the pore size of the main interception layer 8 and the filter layer 9 gradually decreases to achieve layered interception of foreign matter. The design of the pretreatment layer 3, the main interception layer 8, and the filter layer 9 improves the interception capability of foreign matter without affecting the intake performance of the turbojet engine, improves the cleanliness of the intake air, and facilitates the reusability of the turbojet engine.

[0071] In one embodiment of the present application, the main intercepting layer 8 and the filter layer 9 are both made of existing materials that do not affect the air intake performance. Those skilled in the art can select appropriate materials according to actual needs, which will not be repeated here.

[0072] To further optimize the solution, a connecting frame 29 is provided on the intercepting frame 4, and the cleaning motor 7 is fixedly mounted on the end of the connecting frame 29 away from the intercepting frame 4; a control module 30 is provided in the connecting frame 29, and the control module 30 is electrically connected to the starting motor 5 and the cleaning motor 7 respectively. The connecting frame 29 is installed on the intercepting frame 4, and the connecting frame 29 covers the starting motor 5 to improve the safety of the starting motor 5; the cleaning motor 7 is installed on the end of the connecting frame 29 away from the starting motor 5, and the output shaft of the cleaning motor 7 drives the cleaning frame 6 mounted on the connecting block 37 through the transmission connection connection block 37, so that the cleaning frame 6 can clean the outer wall of the pretreatment layer 3; the control module 30 is provided on the connecting frame 29, and is electrically connected to the starting motor 5 and the cleaning motor 7 through the signal line 33 to control the operation of the equipment.

[0073] As a further optimization, an air volume detection sensor 31 is provided in the filter layer 9 and is electrically connected to the control module 30. The air volume detection sensor 31 in the air inlet 2 is used to detect the air volume of the air inlet 2. After the parameter is fed back to the control module 30, the control module 30 controls the cleaning motor 7 according to the change in the air volume, thereby driving the cleaning frame 6.

[0074] In one embodiment of the present application, the control module 30 is electrically connected to a rotation speed sensor 32 provided in the turbojet engine, which is used in conjunction with the air volume detection sensor 31 to indicate that the air inlet 2 is blocked by an object.

[0075] In one embodiment of the present application, the control module 30 may be a TCU of a turbojet engine. It is only necessary to provide a corresponding logic module on the existing TCU to control the operation of the cleaning motor 7 .

[0076] In one embodiment of the present application, a support ring 34 is provided on the outer shield 38 of the turbojet engine, and the end of the cleaning frame 6 is slidably connected to the support ring 34 through an adaptation groove 35 adapted to the support ring 34, thereby improving the stability of the cleaning frame 6.

[0077] In one embodiment of the present application, the control module 30 is connected to various components in the turbojet engine via a plurality of signal lines 33 to facilitate the control of the operation of the turbojet engine.

[0078] Working process:

[0079] An air volume detection sensor 31 is installed in the air inlet 2 and is used together with the speed sensor 32. When the detected air volume is abnormal, it means that the air inlet 2 is blocked by foreign matter. At this time, the set program is activated, and the control module 30 controls the cleaning motor 7 to drive the cleaning rack 6 to rotate to remove the intercepted foreign matter. During cleaning, the air volume detection sensor 31 monitors in real time. When the air volume is normal, the cleaning motor 7 and the cleaning rack 6 stop working.

[0080] Example 2

[0081] Reference Figure 5-Figure 7 As shown, the only difference between this embodiment and embodiment 1 is that a connecting groove 10 is provided on the cleaning frame 6, and a sliding block 11 is slidably disposed within the connecting groove 10. The sliding block 11 is in transmission connection with a movable assembly disposed on the cleaning frame 6; a plurality of cleaning brushes 12 are disposed on the sliding block 11, and the cleaning brushes 12 are in sliding contact with the surface of the pre-treated layer 3. The cleaning brushes 12 are disposed on the sliding block 11, and the sliding block 11 is driven by the movable assembly to rise and fall within the connecting groove 10, thereby moving the cleaning brushes 12 closer to or further away from the pre-treated layer 3. At the same time, the cleaning force of the cleaning brushes 12 can be adjusted during the cleaning process of the surface of the pre-treated layer 3, further improving cleaning efficiency and cleaning effect.

[0082] Further optimizing the scheme, the movable component includes a driving groove 13 provided on the cleaning frame 6, a rotating block 14 is rotatably connected in the driving groove 13, and the rotating block 14 is connected to the eccentric wheel 16 through the connecting rod 15. The eccentric wheel 16 is connected to the force frame 17 embedded in the side wall of the sliding block 11. The rotating block 14 rotates in the driving groove 13, so that the rotating block 14 can drive the eccentric wheel 16 to rotate within the range of the force frame 17 through the connecting rod 15, and then the sliding block 11 is driven to slide back and forth through the action of the eccentric wheel 16 and the force frame 17, thereby adjusting the cleaning force of the cleaning brush 12.

[0083] A further optimization scheme features a guide groove 18 formed in the sidewall of the connecting groove 10. A guide block 19 is slidably connected within the guide groove 18. The guide block 19 extends out of the guide groove 18 and is fixed to the sidewall of the sliding block 11. A return spring 20 is disposed between the guide block 19 and the bottom end of the guide groove 18. The design of the guide groove 18 and the guide block 19 improves the stability of the sliding block 11 while limiting its position and preventing excessive movement. The return spring 20 between the guide block 19 and the guide groove 18 assists in returning the guide block 19 to its original position and also increases its flexibility within the guide groove 18, preventing it from becoming stuck.

[0084] A further optimized solution is that a plurality of driving rods 21 are provided in the driving groove 13, and the output end of the driving rod 21 is transmission-connected to a driving block 22 movably provided in the driving groove 13, and the center of the driving block 22 is slidingly connected to a prismatic driving rod 23, and the top end of the driving rod 23 is transmission-connected to the bottom end of the rotating block 14; a plurality of spirally arranged torsion grooves 27 are opened on the side wall of the driving groove 13, and a torsion block 28 is slidingly connected in the torsion groove 27, and the torsion block 28 extends out of the torsion groove 27 and is fixed to the side wall of the driving block 22. A transmission block 26 is provided at the top of the driving rod 21, and the transmission block 26 is connected to the guide ring 25 provided at the bottom end of the driving block 22; and the driving block 22 is connected to the driving block 22 by the action of the torsion block 28 and the torsion groove 27 provided on the side wall of the driving groove 13, so that when the driving rod 21 is extended and retracted to drive the driving block 22 to slide, the driving block 22 can rotate; and the prismatic transmission rod 23 passes through the transmission hole 24 on the driving rod 21, which can drive the rotating block 14 to rotate, thereby driving the eccentric wheel 16.

[0085] In one embodiment of the present application, the cross-sections of the transmission rod 23 and the transmission hole 24 are polygonal, so that the transmission rod 23 can rotate together with the driving block 22. The two can slide relative to each other, but cannot rotate relative to each other, thereby ensuring the transmission of power.

[0086] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0087] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A foreign body interception device for the air inlet of a turbojet engine, characterized in that: include: An interception net (1), wherein an interception cover of the interception net (1) is arranged at an air inlet (2) of a turbojet engine, the interception net (1) comprising a pretreatment layer (3) and a filter assembly in a layered design, the pretreatment layer (3) and the filter assembly being arranged along an air inlet direction; An interception frame (4), the interception frame (4) being arranged on a side of the pretreatment layer (3) away from the air inlet (2), the pretreatment layer (3) being attached to an inner wall surface of the interception frame (4), and a starter motor (5) for starting the turbojet engine being mounted on the interception frame (4); A cleaning frame (6), the cleaning frame (6) is in driving connection with a cleaning motor (7) mounted on the intercepting frame (4), the cleaning frame (6) is adapted to the pre-processing layer (3), and the cleaning frame (6) is slidably arranged on the outer side surface of the pre-processing layer (3) to clean foreign matter on the surface of the pre-processing layer (3); The cleaning frame (6) is provided with a connecting groove (10), a sliding block (11) is slidably arranged in the connecting groove (10), and the sliding block (11) is transmission-connected to a movable component arranged on the cleaning frame (6); a plurality of cleaning brushes (12) are arranged on the sliding block (11), and the cleaning brushes (12) are in sliding contact with the surface of the pre-treated layer (3); The movable assembly comprises a driving groove (13) provided on the cleaning frame (6), a rotating block (14) being rotatably connected in the driving groove (13), the rotating block (14) being transmission-connected to an eccentric wheel (16) via a connecting rod (15), and the eccentric wheel (16) being transmission-connected to a force-bearing frame (17) embedded in the side wall of the sliding block (11); A guide groove (18) is provided on the side wall of the connecting groove (10), a guide block (19) is slidably connected in the guide groove (18), the guide block (19) extends out of the guide groove (18) and is fixed to the side wall of the sliding block (11); a return spring (20) is provided between the guide block (19) and the bottom end of the guide groove (18).

2. The turbojet engine air inlet foreign body interception device according to claim 1, characterized in that: The pretreatment layer (3) is arranged in an arc shape, and the pretreatment layer (3) is convex in a direction away from the air inlet (2).

3. The turbojet engine air inlet foreign body interception device according to claim 2, characterized in that: The filter assembly comprises a main interception layer (8) and a filter layer (9) arranged in layers, wherein the main interception layer (8) is arranged between the filter layer (9) and the pretreatment layer (3), and the main interception layer (8) and the filter layer (9) are adapted to the pretreatment layer (3).

4. The turbojet engine air inlet foreign body interception device according to claim 1, characterized in that: A plurality of driving rods (21) are provided in the driving groove (13), the output ends of the driving rods (21) are transmission-connected to a driving block (22) movably provided in the driving groove (13), the center of the driving block (22) is slidably connected to a prismatic driving rod (23), and the top end of the driving rod (23) is transmission-connected to the bottom end of the rotating block (14).

5. The turbojet engine air inlet foreign matter interception device according to claim 4, characterized in that: The side wall of the driving groove (13) is provided with a plurality of spirally arranged torsion grooves (27), wherein a torsion block (28) is slidably connected in the torsion groove (27), and the torsion block (28) extends out of the torsion groove (27) and is fixed to the side wall of the driving block (22).

6. The turbojet engine air inlet foreign body interception device according to claim 3, characterized in that: A connecting frame (29) is provided on the intercepting frame (4), and the cleaning motor (7) is fixedly mounted on one end of the connecting frame (29) away from the intercepting frame (4); a control module (30) is provided in the connecting frame (29), and the control module (30) is electrically connected to the starting motor (5) and the cleaning motor (7), respectively.

7. The turbojet engine air inlet foreign matter interception device according to claim 6, characterized in that: An air volume detection sensor (31) is provided in the filter layer (9), and the air volume detection sensor (31) is electrically connected to the control module (30).

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