A wet front axle assembly brake oil filter device and method of use

Abstract

The application belongs to the technical field of wet front axle assembly, and particularly relates to a brake oil filtering device for a wet front axle assembly and a use method thereof, which comprises a front axle body, a brake oil pipe is arranged on the surface of the front axle body, a filtering mechanism is arranged at the lower end of the brake oil pipe, and the filtering mechanism filters brake oil discharged from the brake oil pipe; a collecting mechanism is arranged in the filtering mechanism. The brake oil filtering device for the wet front axle assembly and the use method thereof are characterized in that the filtering mechanism is arranged on the surface of the brake oil pipe, the filtering screen in the filtering mechanism filters impurities in the brake oil, the fishing net and the surface structure thereof fish the impurities on the surface of the filtering screen, the surface of the filtering screen is prevented from being blocked, the circulation of the brake oil is ensured, the filtering mechanism is flat as a whole, the filtering mechanism is convenient to install in the vehicle body, the heat dissipation area of the brake oil is increased, and therefore the filtering mechanism has the characteristic of being convenient to filter the brake oil.

Description

Technical Field

[0001] This invention relates to the field of wet front axle assembly technology, and in particular to a brake oil filter device for wet front axle assemblies and its usage method. Background Technology

[0002] The wet front axle assembly is a core chassis component that integrates wet braking technology with front axle drive and steering functions. However, during long-term use, due to the wear of the friction pads, steel plates, and other structures inside the brake, the brake fluid contains metal shavings. In addition, the aging of oil seals during long-term use produces rubber particles and other impurities. These impurities enter the gaps between the brake piston and the friction pair, causing jamming or accelerated wear, and even leading to brake damage. When existing filtration mechanisms filter the brake fluid, a large amount of impurities tend to accumulate inside the filtration mechanism, which affects the use of the filtration mechanism and requires frequent maintenance, making it inconvenient to use. Summary of the Invention

[0003] To address the technical problem that existing wet front axle assembly internal filtration mechanisms are not suitable for long-term use, this invention proposes a brake oil filtration device for wet front axle assemblies and its usage method.

[0004] The present invention proposes a brake fluid filtration device for a wet front axle assembly, comprising a front axle body, a brake fluid pipe mounted on the surface of the front axle body, a filtration mechanism mounted on the lower end of the brake fluid pipe, the filtration mechanism filtering the brake fluid discharged from the brake fluid pipe; and a collection mechanism installed inside the filtration mechanism for directional collection of impurities filtered out by the filtration mechanism.

[0005] Preferably, the filtration mechanism includes a filter housing, the upper end of which is fixedly connected to and communicates with the lower end of the brake oil pipe, a filter screen is fixedly connected to the lower inner wall of the filter housing, the filter screen is arc-shaped, and a buffer plate is fixedly connected to the upper inner wall of the filter housing, with the buffer plates on both sides being staggered on the inner wall of the filter housing.

[0006] The above technical solution uses a buffer plate to buffer the brake fluid, reducing the flow rate and impact on the surface of the fishing net, while also facilitating the use of a cooling fan to increase heat dissipation.

[0007] Preferably, a power box is fixedly connected to one side surface of the filter housing, and an mounting plate is fixedly connected to the upper inner wall of the power box. The mounting plate is hollow, and a push block is slidably connected to the inner wall of the mounting plate. The push block is T-shaped, and a sliding roller is fixedly connected to the lower end of the push block. A sliding groove is formed on the lower surface of the mounting plate, and the inner wall of the sliding groove is slidably connected to the surface of the sliding roller. A deflection groove is formed on the upper surface of the mounting plate. The deflection groove is arc-shaped, and the lower end of the deflection groove communicates with the middle of the sliding groove.

[0008] The above technical solution utilizes the flat shape of the push block and its surface structure to increase the diffusion area of ​​brake fluid, thereby increasing the heat dissipation area of ​​brake fluid, and at the same time facilitating the lubrication of the push block and its surface structure by brake fluid.

[0009] Preferably, a fishing net is fixedly connected to the surface of one of the sliding rollers, and slots are provided on the middle surface of the filter box and the middle surface of the power box. The inner wall of the slot is slidably inserted into the surface of the fishing net, and a scraper is fixedly connected to the end of the fishing net. The scraper is made of martensitic stainless steel.

[0010] The above technical solution utilizes the fishing net to push away impurities in the brake fluid, thereby reducing the resistance when the fishing net slides.

[0011] Preferably, the upper end of the push block is rotatably connected to a connecting rod via a rotating shaft, the upper surface of the mounting plate is fixedly connected to a mounting rod, the upper end of the mounting rod is rotatably connected to a driving rod via a rotating shaft, and the lower end of the driving rod is rotatably connected to the lower end of the connecting rod via a rotating shaft.

[0012] The above technical solution utilizes a drive rod to drive the push block via a connecting rod, thereby facilitating the reciprocating sliding of the push block through the rotation of the drive rod.

[0013] Preferably, a transmission mechanism is installed on the outer surface of the filter housing. A cooling fan is fixedly connected to the outer surface of one end of the transmission mechanism. The fan blade shaft of the cooling fan is drivenly connected to one end of the transmission mechanism. The cooling fan is located on the upper outer surface of the filter housing. A drive motor is fixedly connected to the outer surface of the other end of the transmission mechanism. The output shaft of the drive motor is drivenly connected to the shaft at the upper end of the drive rod through the transmission mechanism.

[0014] The above technical solution utilizes a drive motor as a power source and a transmission mechanism to synchronously drive the cooling fan and drive rod, thereby reducing the number of power sources. The transmission mechanism includes a housing, a transmission belt, and two transmission wheels. The two transmission wheels are rotatably connected inside the housing, and the transmission belt is sleeved on the surface of the two transmission wheels.

[0015] Preferably, the collection mechanism includes a collection box, the surface of which is slidably inserted into and sealed with the lower surface of the power box, and a filter groove is provided on the upper surface of the collection box, with an oil drain screen installed on the inner wall of the filter groove.

[0016] The above technical solution utilizes the connection between the upper end of the collection box and the outside via an oil drain screen, which facilitates the collection of excess brake fluid in the box. After being filtered by the oil drain screen, the fluid is discharged into the power box.

[0017] Preferably, the lower side wall surface of the collection box is connected to the lower side wall surface of the filter box, the lower inner wall of the filter box is hinged with a baffle through a pivot, and the upper and lower inner walls of the collection box are both pivotally connected with mounting shafts, and a collection net is fixedly connected to the surface of the mounting shaft.

[0018] The above technical solution utilizes a baffle to control the connection between the collection box and the filter box, thereby facilitating the control of impurities being fed into the collection box.

[0019] Preferably, a telescopic rod is fixedly connected to the inner wall of the collection box, a spring is slidably sleeved on the surface of the telescopic rod, a push rod is fixedly sleeved on the piston end surface of the telescopic rod, and a locking block is fixedly connected to the side wall surface of the push rod, with multiple locking blocks integrally formed with the push rod.

[0020] The above technical solution allows the push rod to push the collection net through the locking block, while simultaneously pushing the baffle through the push rod, thereby controlling the closing of the baffle.

[0021] A method of using a brake fluid filter for a wet front axle assembly is as follows: Step 1, within the front axle body, the brake fluid of the wet brake is discharged into the filter housing through the brake fluid pipe. Impurities in the brake fluid enter the filter housing along with the brake fluid and are slowed down by the buffer plate. After the filter screen filters the brake fluid, the impurities in the brake fluid remain on the surface of the filter screen.

[0022] Step two: Start the drive motor. The drive motor starts the cooling fan through the transmission mechanism. The cooling fan cools the brake oil on the surface of the buffer plate. At the same time, the drive motor drives the drive rod through the transmission mechanism. The drive rod rotates in a circle with the upper shaft as the axis. The lower end of the drive rod pushes the push block through the connecting rod. The push block pushes the fishing net from the power box into the filter box through the sliding roller. One of the sliding rollers slides to the end of the slide groove. The connecting rod continues to push the push block. The push block deflects. The sliding roller drives the fishing net to deflect downward. The scraper pushes the impurities on the surface of the filter screen.

[0023] Step 3: When the scraper slides to the lowest point, it knocks open the baffle and pushes the impurities into the collection box. The drive motor continues to run, and the drive rod drives the pusher to reset through the connecting rod, and drives the fishing net to reset into the power box. When the baffle opens, it deflects into the collection box around the rotation axis of the surface and pushes one end of the push rod. The push rod pushes the telescopic rod and spring to retract. The locking block on the surface of the push rod pushes multiple collection nets, and the multiple collection nets tilt and press against each other.

[0024] Step four: After the scraper returns to its original position along with the filter screen, the spring returns to its original position and pushes the push rod. The push rod pushes the collection screen in the opposite direction through the locking block, and the multiple collection screens separate from each other. Impurities that have entered the collection box are captured by the collection screen, and the brake oil is discharged into the power box through the drain screen, and the above process is repeated.

[0025] The beneficial effects of this invention are as follows:

[0026] 1. By installing a filter mechanism on the surface of the brake fluid line, the filter screen in the filter mechanism filters impurities in the brake fluid, while the fishing net and its surface structure remove impurities from the filter screen surface, preventing the filter screen surface from clogging and ensuring the flow of brake fluid. In addition, the filter mechanism is flat in shape, which makes it easy to install in the vehicle body and increases the heat dissipation area of ​​the brake fluid, thus making the filter mechanism easy to filter brake fluid.

[0027] 2. By installing a collection mechanism inside the power box, the collection box of the collection mechanism can collect impurities in a directional manner. The staggered collection nets prevent impurities from escaping from the collection box. When the baffle is opened and connected to the collection box, the baffle squeezes multiple collection nets through the push rod. The multiple collection nets deflect, further preventing the flow of impurities from the collection box. This facilitates the directional collection of impurities and increases the service life of the equipment's filtration device. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a brake oil filtration device for a wet front axle assembly proposed in this invention.

[0029] Figure 2 This is a cross-sectional view of the filter housing structure of a wet front axle assembly brake oil filter device proposed in this invention.

[0030] Figure 3 This is a perspective view of the mounting plate structure of a brake oil filter device for a wet front axle assembly proposed in this invention.

[0031] Figure 4 This is a cross-sectional view of the mounting plate structure of a brake oil filter device for a wet front axle assembly proposed in this invention.

[0032] Figure 5This is a perspective view of the pusher block structure of a brake oil filter device for a wet front axle assembly proposed in this invention.

[0033] Figure 6 This is a cross-sectional view of the collection box structure of a brake oil filter device for a wet front axle assembly proposed in this invention;

[0034] Figure 7 This is a cross-sectional view of the push rod structure of a brake oil filter device for a wet front axle assembly proposed in this invention;

[0035] Figure 8 This is a cross-sectional view of the transmission mechanism of a brake oil filter device for a wet front axle assembly proposed in this invention.

[0036] In the diagram: 1. Front axle body; 2. Brake oil pipe; 3. Filter box; 31. Filter screen; 32. Buffer plate; 33. Power box; 34. Mounting plate; 35. Push block; 36. Sliding roller; 37. Fishing net; 38. Scraper; 39. Connecting rod; 310. Drive rod; 4. Transmission mechanism; 5. Cooling fan; 6. Drive motor; 7. Collection box; 71. Oil drain screen; 72. Baffle; 73. Mounting shaft; 74. Collection net; 75. Telescopic rod; 76. Spring; 77. Push rod; 78. Locking block. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] Reference Figures 1-8 A wet front axle assembly brake fluid filter includes a front axle body 1, a brake fluid pipe 2 mounted on the surface of the front axle body 1, a filter mechanism mounted on the lower end of the brake fluid pipe 2, the filter mechanism filtering the brake fluid discharged from the brake fluid pipe 2; and a collection mechanism installed inside the filter mechanism, the collection mechanism directionally collecting the impurities filtered out by the filter mechanism.

[0039] To filter the brake fluid, a filter mechanism includes a filter housing 3. The upper end of the filter housing 3 is fixedly connected to and communicates with the lower end of the brake fluid pipe 2. A filter screen 31, which is arc-shaped, is fixedly connected to the inner wall of the lower end of the filter housing 3. A buffer plate 32 is fixedly connected to the inner wall of the upper end of the filter housing 3. The buffer plates 32 are staggered on both sides of the inner wall of the filter housing 3. The buffer plates 32 buffer the brake fluid, reduce the flow rate and the impact on the surface of the fishing net 37, and facilitate the use of the cooling fan 5 to increase the heat dissipation effect. A power box 33 is fixedly connected to one side of the filter housing 3. The upper inner wall of the power box 33... A mounting plate 34 is fixedly connected. The mounting plate 34 is hollow. A push block 35 is slidably connected to the inner wall of the mounting plate 34. The push block 35 is T-shaped. A sliding roller 36 is fixedly connected to the lower end of the push block 35. A sliding groove is opened on the lower surface of the mounting plate 34. The inner wall of the sliding groove is slidably connected to the surface of the sliding roller 36. A deflection groove is opened on the upper surface of the mounting plate 34. The deflection groove is arc-shaped. The lower end of the deflection groove is connected to the middle of the sliding groove. By utilizing the flat shape of the push block 35 and its surface structure, the diffusion area of ​​the brake oil is increased, thereby increasing the heat dissipation area of ​​the brake oil. At the same time, it is convenient to lubricate the push block 35 and its surface structure through the brake oil.

[0040] To clear the surface of the filter screen 31, a catching net 37 is fixedly connected to the surface of one of the sliding rollers 36. Slots are provided on the middle surface of the filter housing 3 and the middle surface of the power box 33. The inner wall of the slot is slidably inserted into the surface of the catching net 37. A scraper 38 is fixedly connected to the end of the catching net 37. The scraper 38 is made of martensitic stainless steel. The catching net 37 pushes only the impurities in the brake oil, thereby reducing the resistance when the catching net 37 slides. The upper end of the push block 35 is rotatably connected to the connecting rod 39 through a rotating shaft. An installation rod is fixedly connected to the upper surface of the mounting plate 34. The upper end of the installation rod is rotatably connected to the drive rod 310 through a rotating shaft. The lower end of the drive rod 310 is rotatably connected to the lower end of the connecting rod 39 through a rotating shaft. The drive rod 310 drives the push block 35 through the connecting rod 39, thereby facilitating the reciprocating sliding of the push block 35 by the rotation of the drive rod 310.

[0041] To dissipate heat from the brake fluid, a transmission mechanism 4 is installed on the outer surface of the filter housing 3. A cooling fan 5 is fixedly connected to one end of the outer surface of the transmission mechanism 4. The fan blade shaft of the cooling fan 5 is connected to one end of the transmission mechanism 4. The cooling fan 5 is located on the upper outer surface of the filter housing 3. A drive motor 6 is fixedly connected to the other end of the outer surface of the transmission mechanism 4. The output shaft of the drive motor 6 is connected to the upper shaft of the drive rod 310 through the transmission mechanism 4. The drive motor 6 is used as a power source, and the cooling fan 5 and the drive rod 310 are driven synchronously through the transmission mechanism 4, reducing the number of power sources. The transmission mechanism 4 includes a housing, a transmission belt, and two transmission wheels. The two transmission wheels are rotatably connected inside the housing, and the transmission belt is sleeved on the surface of the two transmission wheels.

[0042] By installing a filter mechanism on the surface of the brake oil pipe 2, the filter screen 31 in the filter mechanism filters impurities in the brake oil, while the catching net 37 and its surface structure catch the impurities on the surface of the filter screen 31, avoiding clogging of the filter screen 31 and ensuring the flow of brake oil. In addition, the filter mechanism is flat, which makes it easy to install in the vehicle body and increases the heat dissipation area of ​​the brake oil, thus making the filter mechanism easy to filter brake oil.

[0043] To collect impurities, the collection mechanism includes a collection box 7. The surface of the collection box 7 is slidably inserted into and sealed to the lower surface of the power box 33. A filter groove is formed on the upper surface of the collection box 7, and an oil drain screen 71 is installed on the inner wall of the filter groove. The upper end of the collection box 7 is connected to the outside through the oil drain screen 71, so that excess brake oil in the collection box 7 can be discharged into the power box 33 after being filtered by the oil drain screen 71. The lower side wall surface of the collection box 7 is connected to the lower side wall surface of the filter housing 3. A baffle 72 is hinged to the lower inner wall of the filter housing 3 via a pivot. Both the upper and lower inner walls of the collection box 7 are pivotally connected to mounting shafts 73. A collection net 74 is fixedly connected to the surface of the mounting shaft 73. The connection between the collection box 7 and the filter box 3 is controlled by the baffle 72, which facilitates the control of the impurities being sent into the collection box 7. A telescopic rod 75 is fixedly connected to the inner wall of the collection box 7. A spring 76 is slidably sleeved on the surface of the telescopic rod 75. A push rod 77 is fixedly sleeved on the piston end surface of the telescopic rod 75. A locking block 78 is fixedly connected to the side wall surface of the push rod 77. Multiple locking blocks 78 are integrally formed with the push rod 77. While the collection net 74 is pushed by the push rod 77 through the locking blocks 78, the baffle 72 is also pushed by the push rod 77, thereby controlling the closing of the baffle 72.

[0044] By installing a collection mechanism inside the power box 33, the collection box 7 of the collection mechanism is used to collect impurities in a directional manner. The staggered collection nets 74 prevent impurities from escaping from the collection box 7. When the baffle 72 is opened and connected to the collection box 7, the baffle 72 squeezes the multiple collection nets 74 through the push rod 77. The multiple collection nets 74 deflect, further preventing the flow of impurities from the collection box 7. This facilitates the directional collection of impurities and increases the service life of the equipment's filtration device.

[0045] A method of using a brake fluid filter for a wet front axle assembly is as follows: Step 1, in the front axle body 1, the brake fluid of the wet brake is discharged into the filter housing 3 through the brake fluid pipe 2. Impurities in the brake fluid enter the filter housing 3 along with the brake fluid and are slowed down by the buffer plate 32. After the filter screen 31 filters the brake fluid, the impurities in the brake fluid remain on the surface of the filter screen 31.

[0046] Step 2: Start the drive motor 6. The drive motor 6 starts the cooling fan 5 through the transmission mechanism 4. The cooling fan 5 cools the brake oil on the surface of the buffer plate 32. At the same time, the drive motor 6 drives the drive rod 310 through the transmission mechanism 4. The drive rod 310 rotates in a circle with the upper shaft as the axis. The lower end of the drive rod 310 pushes the push block 35 through the connecting rod 39. The push block 35 pushes the fishing net 37 from the power box 33 into the filter box 3 through the sliding roller 36. One of the sliding rollers 36 slides to the end of the chute. The connecting rod 39 continues to push the push block 35. The push block 35 deflects, and the sliding roller 36 drives the fishing net 37 to deflect downward. The scraper 38 pushes the impurities on the surface of the filter screen 31.

[0047] Step 3: When the scraper 38 slides to the lowest point, it knocks open the baffle 72 and pushes the impurities into the collection box 7. The drive motor 6 continues to run. The drive rod 310 drives the pusher 35 to reset through the connecting rod 39 and drives the fishing net 37 to reset into the power box 33. When the baffle 72 is opened, it deflects into the collection box 7 around the rotation axis of the surface and pushes one end of the push rod 77. The push rod 77 pushes the telescopic rod 75 and the spring 76 to retract. The locking block 78 on the surface of the push rod 77 pushes multiple collection nets 74. The multiple collection nets 74 tilt and press against each other.

[0048] Step four: After the scraper block 38 is reset along with the filter screen 31, the spring 76 is reset and pushes the push rod 77. The push rod 77 pushes the collection screen 74 in the opposite direction through the locking block 78. The multiple collection screens 74 are separated from each other. Impurities that have entered the collection box 7 are captured by the collection screen 74. The brake oil is discharged into the power box 33 through the drain screen 71, and the above process is repeated.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wet front axle assembly brake fluid filter, comprising a front axle body (1), wherein a brake fluid pipe (2) is mounted on the surface of the front axle body (1), characterized in that: A filter mechanism is installed at the lower end of the brake oil pipe (2), and the filter mechanism filters the brake oil discharged from the brake oil pipe (2). The filtration mechanism is equipped with a collection mechanism that collects the impurities filtered out by the filtration mechanism in a directional manner. The filtration mechanism includes a filter housing (3), the upper end of which is fixedly connected to and communicates with the lower end of the brake oil pipe (2). A filter screen (31) is fixedly connected to the inner wall of the lower end of the filter housing (3). The filter screen (31) is arc-shaped. A buffer plate (32) is fixedly connected to the inner wall of the upper end of the filter housing (3). The buffer plates (32) on both sides are staggered on the inner wall of the filter housing (3). A power box (33) is fixedly connected to one side surface of the filter housing (3). An installation plate (34) is fixedly connected to the upper inner wall of the power box (33). The installation plate (34) is hollow. A push block (35) is slidably connected to the inner wall of the installation plate (34). The push block (35) is T-shaped. A sliding roller (36) is fixedly connected to the lower end of the push block (35). A sliding groove is opened on the lower surface of the installation plate (34). The inner wall of the sliding groove is slidably connected to the surface of the sliding roller (36). A deflection groove is opened on the upper surface of the installation plate (34). The deflection groove is arc-shaped. The lower end of the deflection groove is connected to the middle of the sliding groove. A fishing net (37) is fixedly connected to the surface of one of the rollers (36). Slots are provided on the middle surface of the filter box (3) and the middle surface of the power box (33). The inner wall of the slot is slidably inserted into the surface of the fishing net (37). A scraper (38) is fixedly connected to the end of the fishing net (37). The scraper (38) is made of martensitic stainless steel. The upper end of the push block (35) is rotatably connected to the connecting rod (39) via a rotating shaft. The upper surface of the mounting plate (34) is fixedly connected to the mounting rod. The upper end of the mounting rod is rotatably connected to the drive rod (310) via a rotating shaft. The lower end of the drive rod (310) is rotatably connected to the lower end of the connecting rod (39) via a rotating shaft. A transmission mechanism (4) is installed on the outer surface of the filter housing (3). A cooling fan (5) is fixedly connected to one end of the outer surface of the transmission mechanism (4). The fan blade shaft of the cooling fan (5) is connected to one end of the transmission mechanism (4). The cooling fan (5) is located on the upper outer surface of the filter housing (3). A drive motor (6) is fixedly connected to the other end of the outer surface of the transmission mechanism (4). The output shaft of the drive motor (6) is connected to the upper shaft of the drive rod (310) through the transmission mechanism (4). The collection mechanism includes a collection box (7), the surface of the collection box (7) is slidably inserted into and sealed with the lower surface of the power box (33), and a filter groove is provided on the upper surface of the collection box (7), and an oil draining screen (71) is installed on the inner wall of the filter groove. The lower side wall surface of the collection box (7) is connected to the lower side wall surface of the filter box (3). The lower inner wall of the filter box (3) is hinged with a baffle (72) by a pivot. The upper inner wall and the lower inner wall of the collection box (7) are both connected with a mounting shaft (73) by a pivot. A collection net (74) is fixedly connected to the surface of the mounting shaft (73). The inner wall of the collection box (7) is fixedly connected to a telescopic rod (75), a spring (76) is slidably sleeved on the surface of the telescopic rod (75), a push rod (77) is fixedly sleeved on the piston end surface of the telescopic rod (75), and a locking block (78) is fixedly connected to the side wall surface of the push rod (77). Multiple locking blocks (78) and push rods (77) are integrally formed.

2. The method of using a brake oil filter device for a wet front axle assembly according to claim 1 is as follows: Step 1, in the front axle body (1), the brake oil of the wet brake is discharged into the filter box (3) through the brake oil pipe (2). Impurities in the brake oil enter the filter box (3) along with the brake oil and are slowed down by the buffer plate (32). After the filter screen (31) filters the brake oil, the impurities in the brake oil remain on the surface of the filter screen (31). Step 2: Start the drive motor (6). The drive motor (6) starts the cooling fan (5) through the transmission mechanism (4). The cooling fan (5) cools the brake oil on the surface of the buffer plate (32). At the same time, the drive motor (6) drives the drive rod (310) through the transmission mechanism (4). The drive rod (310) rotates in a circle with the upper shaft as the axis. The lower end of the drive rod (310) pushes the push block (35) through the connecting rod (39). The push block (35) pushes the fishing net (37) from the power box (33) into the filter box (3) through the sliding roller (36). One of the sliding rollers (36) slides to the end of the chute. The connecting rod (39) continues to push the push block (35). The push block (35) deflects. The sliding roller (36) drives the fishing net (37) to deflect downward. The scraper (38) pushes the impurities on the surface of the filter screen (31). Step 3: When the scraper (38) slides to the lowest point, it knocks open the baffle (72) and pushes the impurities into the collection box (7). The drive motor (6) continues to run, and the drive rod (310) drives the pusher (35) to reset through the connecting rod (39), and drives the fishing net (37) to reset into the power box (33). When the baffle (72) opens, it deflects around the rotation axis of the surface into the collection box (7) and pushes one end of the push rod (77). The push rod (77) pushes the telescopic rod (75) and the spring (76) to retract. The locking block (78) on the surface of the push rod (77) pushes multiple collection nets (74). The multiple collection nets (74) tilt and press against each other. Step four: After the scraper (38) resets along with the filter screen (31), the spring (76) resets and pushes the push rod (77). The push rod (77) pushes the collection screen (74) in the opposite direction through the locking block (78). The multiple collection screens (74) separate from each other. Impurities that enter the collection box (7) are captured by the collection screen (74). The brake oil is discharged into the power box (33) through the drain screen (71) and the above process is repeated.

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