A Compressed Garbage Truck Sewage Tank Filter Assembly

Abstract

This utility model discloses a sewage tank filter assembly for a compression garbage truck, consisting of a sewage tank body, a dual-layer filtration system, and a cleaning mechanism. A first filter screen is installed at the top of the sewage tank to intercept large impurities, and a splash guard is provided above to prevent sewage from splashing. A motor-driven scraper moves along the surface of the filter screen to push the accumulated impurities into the side collection box, achieving manual cleaning. A second fine filter screen is added inside the tank, with a finer mesh to trap small particles and prevent the outlet from clogging. A winch and pulley system drive the second filter screen to rise and fall, facilitating the periodic removal of deposited microparticles. This assembly, through the synergistic design of coarse-fine two-stage filtration and automatic cleaning, not only solves the problems of easy clogging and sewage splashing of traditional filters, but also improves sewage treatment efficiency and reduces maintenance costs. Its modular structure facilitates installation and maintenance, making it particularly suitable for wet waste collection and treatment scenarios.

Description

Technical Field

[0001] This utility model relates to the field of sewage tanks for garbage trucks, specifically to a compressed sewage tank filter assembly for garbage trucks. Background Technology

[0002] The wastewater tank filter assembly of a compressed garbage truck is a key filtration device installed in the wastewater collection system of the garbage truck. It is mainly used to intercept solid debris generated during the garbage compression process, preventing it from entering the wastewater tank or drainage pipes, thereby protecting components such as water pumps and valves, and ensuring smooth wastewater discharge to avoid environmental pollution.

[0003] During the garbage compression process of existing compressed garbage trucks, wastewater directly impacts the filter components of the wastewater tank, causing severe wastewater splashing, polluting surrounding equipment and the environment, and affecting the hygiene of the work site. In addition, after the filter components have finished filtering the wastewater, the solid impurities remaining on their surface require frequent manual maintenance, which not only increases operating costs but also poses a risk of filter clogging if cleaning is not done in time. Even after being treated by the filter components, the wastewater still contains a large number of fine particulate matter. After long-term deposition in the wastewater tank, these substances will gradually clog the drainage pipe system, affecting normal drainage function, accelerating the corrosion of the inner wall of the wastewater tank, and shortening the service life of the equipment. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the aforementioned technologies by proposing a compressed garbage truck sewage tank filter assembly, thereby solving the aforementioned technical problems.

[0005] This utility model provides a filter screen assembly for a compressed garbage truck's sewage tank, including a sewage tank body mounted on a mounting frame, with a water outlet at the bottom of the sewage tank body, and further comprising: First filter screen; The first filter screen is installed at the opening of the sewage tank body and is used to block large impurities from entering the sewage tank; Splash-proof enclosure, which is installed on top of the sewage tank and above the first filter screen; A cleaning component is mounted on a mounting bracket. The output end of the cleaning component abuts against the upper surface of the first filter screen. The cleaning component drives the output end to move along the upper surface of the first filter screen to clean large impurities from the first filter screen. The second filter screen is installed inside the sewage tank. The second filter screen is used to block fine impurities and fine particles in the sewage tank from entering the outlet and thus blocking the outlet. The lifting component is installed on the sewage tank body. The lifting component is used to drive the second filter screen to rise and fall in the vertical direction of the sewage tank body, so as to discharge the fine impurities and fine particles on the second filter screen from the sewage tank body.

[0006] Preferably, the anti-splash enclosure has openings on both opposite side walls, and one of the side walls also has a groove located above the opening. Several springs are fixedly installed in the groove, and one end of each spring is fixedly connected to a blocking plate.

[0007] Preferably, the cross-section of the baffle is a right-angled triangle, and the baffle has an inclined surface facing the opening of the other side wall of the splash-proof enclosure.

[0008] Preferably, the cleaning component includes a motor, which is fixedly mounted on a mounting bracket. A drive shaft is fixedly mounted on the output end of the motor, and the drive shaft passes through the mounting bracket. A gear is fixedly mounted on the outer side of the drive shaft. Two support brackets are fixedly mounted on the side wall of the sewage tank body. A cleaning scraper is slidably mounted on the top surface of the two support brackets. A rack is fixedly mounted on the bottom surface of the cleaning scraper, and the rack meshes with the gear on the outer side of the drive shaft.

[0009] Preferably, a cleaning scraper head is fixedly installed at one end of the cleaning scraper. The cleaning scraper head is triangular in shape and is located in an opening on the other side wall of the splash-proof enclosure.

[0010] Preferably, slide rails are fixedly installed on the two inner walls of the sewage tank body, and slide tracks adapted to the slide rails are opened at the two ends of the second filter screen, so that the second filter screen and the slide rails are slidably installed.

[0011] Preferably, the lifting assembly includes two spiral lifting machines, which are fixedly installed on two opposite outer walls of the sewage tank body. Each of the two opposite outer walls of the sewage tank body has a through hole through which the steel ropes of the two spiral lifting machines extend into the sewage tank body. Two mounting shafts are fixedly installed on the inner wall of the sewage tank body, and pulleys are rotatably installed on the outer sides of each of the two mounting shafts. The steel ropes of the two spiral lifting machines are slidably connected to the two pulleys. One end of each steel rope is fixedly connected to two branch ropes, which are respectively connected to the two opposite ends of the second filter screen.

[0012] Preferably, a collection box is fixedly installed on the side wall of the sewage tank body, and the collection box is used to collect large impurities on the surface of the first filter screen.

[0013] Preferably, the filter holes on the second filter screen are smaller than those on the first filter screen.

[0014] Compared with existing technologies, it has the following beneficial effects: This utility model provides a filter screen assembly for a compressed garbage truck's sewage tank. By adding a splash guard above the first filter screen, it avoids the problem of sewage splashing everywhere and polluting the environment when it impacts the filter screen. After the sewage passes through the first filter screen, a cleaning component is activated to remove the impurities accumulated on the first filter screen, eliminating the trouble of manual cleaning. A second fine filter screen is added inside the sewage tank to filter out fine particles in the sewage and prevent the sewage tank outlet from overflowing. When it is necessary to clean the fine impurities on the second filter screen, a lifting component is used to lift the second filter screen out of the sewage tank for cleaning. The above-mentioned filter assembly prevents sewage from splashing and polluting the environment, avoids filter screen clogging, extends the service life of the sewage tank, and reduces the workload of manual maintenance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a compressed garbage truck sewage tank filter assembly according to the present invention; Figure 2 This is a schematic diagram of the connection relationship of the cleaning components of a sewage tank filter assembly for a compressed garbage truck according to this utility model. Figure 3 Exploded view of the connection relationship between the anti-splash baffle and the blocking plate of a sewage tank filter assembly for a compressed garbage truck according to this utility model; Figure 4 This is a schematic diagram showing the connection relationship between the cleaning scraper and the cleaning scraper head of a sewage tank filter assembly for a compressed garbage truck according to this utility model. Figure 5 This is a schematic diagram showing the connection relationship between the lifting component and the second filter screen of a sewage tank filter screen assembly for a compressed garbage truck according to this utility model. Figure 6 This is an exploded view showing the connection between the slide rail on the second filter screen of a compressed garbage truck sewage tank filter assembly and the slide rail inside the sewage tank body.

[0017] In the diagram, 1. Wastewater tank body; 2. Mounting frame; 3. Outlet; 4. First filter screen; 5. Splash barrier; 6. Second filter screen; 7. Spring; 8. Baffle plate; 9. Motor; 10. Drive shaft; 11. Gear; 12. Support frame; 13. Cleaning scraper; 14. Rack; 15. Cleaning scraper head; 16. Slide rail; 17. Slide track; 18. Roller elevator; 19. Mounting shaft; 20. Pulley; 21. Branch rope; 22. Collection box. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0019] Example 1: like Figures 1 to 6 As shown, this utility model provides a filter screen assembly for a compressed garbage truck's sewage tank, including a sewage tank body 1, which is mounted on a mounting frame 2. The sewage tank body 1 has a water outlet 3 at its bottom, and also includes: First filter screen 4; The first filter screen 4 is set at the opening of the sewage tank body 1, and the first filter screen 4 is used to block large impurities from entering the sewage tank; Splash-proof enclosure 5 is installed on top of the sewage tank and above the first filter screen 4; The cleaning component is mounted on the mounting bracket 2. The output end of the cleaning component abuts against the upper surface of the first filter screen 4. The cleaning component drives the output end to move along the upper surface of the first filter screen 4 to clean large impurities on the first filter screen 4. The second filter 6 is installed inside the sewage tank body 1. The second filter 6 is used to block fine impurities and fine particles in the sewage tank from entering the outlet 3 and thus blocking the outlet 3. The lifting component is installed on the sewage tank body 1. The lifting component is used to drive the second filter screen 6 to rise and fall in the vertical direction of the sewage tank body 1 so as to discharge the fine impurities and fine particles on the second filter screen 6 from the sewage tank body 1.

[0020] In operation, when wastewater falls from above, it first passes through the first filter screen 4, blocking large pieces of debris and preventing them from entering the wastewater tank. Simultaneously, the splash guard 5 installed on top of the wastewater tank prevents water from splashing when the wastewater impacts the filter screen, keeping the surrounding environment clean. After the wastewater has completely fallen, the cleaning component is activated. Its cleaning head moves along the surface of the first filter screen 4, pushing away accumulated large impurities, eliminating the need for manual cleaning. After initial filtration, the wastewater enters the wastewater tank and passes through the second filter screen 6, further filtering out fine particles and preventing these tiny impurities from clogging the bottom outlet 3. When cleaning the second filter screen 6 in the wastewater tank is required, the lifting component raises the second filter screen 6, removing the accumulated fine particles and ensuring the filtration system always maintains good working condition.

[0021] Example 2: like Figures 1 to 6 As shown, in conjunction with the technical solution of Embodiment 1, in this technical solution, openings are provided on both opposite side walls of the anti-splash enclosure 5, and a groove is also provided on one of the side walls. The groove is located above the opening, and several springs 7 are fixedly installed in the groove. One end of each spring 7 is fixedly connected to a baffle plate 8. Sewage falls vertically from the top of the enclosure and is surrounded by baffles around the enclosure to prevent splashing. The openings on both sides of the enclosure facilitate the lateral movement of the cleaning scraper 13. A triangular baffle with a spring 7 is provided above one of the openings. When the cleaning scraper 13 passes through, the baffle is pushed open to push impurities out of the filter screen. When the cleaning scraper 13 returns along the original path, the spring 7 resets the baffle. This ensures that the cleaning components work normally and that sewage does not splash out from the opening.

[0022] Furthermore, the cross-section of the baffle plate 8 is a right-angled triangle, and the baffle plate 8 has an inclined surface, which faces the opening of the other side wall of the splash guard 5. When the cleaning scraper 13 passes through the opening, it will first encounter the inclined surface of the baffle plate. Due to the inclined surface design, the scraper can smoothly push the baffle plate open, pushing the impurities on the filter screen out of the filter screen. When the scraper pushes out the impurities and returns to its original position, the baffle plate automatically returns to its original position by the spring 7, thus completing the blocking of the opening.

[0023] Furthermore, the cleaning assembly includes a motor 9, which is fixedly mounted on the mounting bracket 2. A drive shaft 10 is fixedly mounted on the output end of the motor 9, passing through the mounting bracket 2. A gear 11 is fixedly mounted on the outer side of the drive shaft 10. Two support brackets 12 are fixedly mounted on the side wall of the wastewater tank body 1. A cleaning scraper 13 is slidably mounted on the top surface of the two support brackets 12. A rack 14 is fixedly mounted on the bottom surface of the cleaning scraper 13, and the rack 14 meshes with the gear 11 on the outer side of the drive shaft 10. When the motor 9 starts, it drives the drive shaft 10 to rotate, and the gear 11 on the shaft rotates accordingly. Since the gear 11 and the rack 14 at the bottom of the cleaning scraper 13 are meshed together, the rotation of the gear 11 pushes the rack 14 to drive the entire cleaning scraper 13 to slide back and forth on the support bracket 12. When the scraper moves, the cleaning scraper head 15 on it can scrape the garbage off the surface of the filter screen.

[0024] Furthermore, a cleaning scraper head 15 is fixedly installed at one end of the cleaning scraper 13. The cleaning scraper head 15 is triangular prism in shape and is located in the opening of the other side wall of the splash guard 5. When the motor 9 drives the cleaning scraper 13 to move, the triangular prism-shaped scraper head at the front end will clean and scrape along the surface of the filter screen. Since the scraper head is located at the opening of the guard, it can effectively clean without affecting the splash guard function.

[0025] Furthermore, slide rails 16 are fixedly installed on both inner walls of the sewage tank body 1, and slide tracks 17 adapted to the slide rails 16 are opened at both ends of the second filter screen 6. The second filter screen 6 is slidably installed with the slide rails 16. When the second filter screen 6 needs to be cleaned, the lifting component will pull the second filter screen 6. At this time, the filter screen will rise smoothly along the slide rails 16 on the inner wall of the sewage tank. The cooperation between the slide rails 16 and the slide tracks 17 ensures that the filter screen will not shake or get stuck during the lifting process, and can maintain a stable movement trajectory.

[0026] Furthermore, the lifting assembly includes two winches 18, which are fixedly installed on two opposite outer walls of the sewage tank body 1. Each of the two opposite outer walls of the sewage tank body 1 has a through hole through which the steel ropes of the two winches 18 extend into the sewage tank body 1. Two mounting shafts 19 are fixedly installed on the inner wall of the sewage tank body 1, and pulleys 20 are rotatably mounted on the outer sides of each of the two mounting shafts 19. The steel ropes of the two winches 18 are slidably connected to the two pulleys 20. Two branch ropes 21 are fixedly connected to one end of each steel rope, and the two branch ropes 21 are connected to the opposite ends of the second filter screen 6. When the two winches work simultaneously, the steel ropes are inserted through the through holes in the outer walls. The steel ropes are deflected by the pulleys 20 inside the tank, becoming four branch ropes 21 that evenly pull the four corners of the second filter screen 6. This allows the filter screen to be smoothly lifted from the sewage tank for cleaning. The design of the double winches and pulley 20 sets ensures that the filter screen is evenly stressed and operates smoothly.

[0027] Furthermore, a collection box 22 is fixedly installed on the side wall of the sewage tank body 1. The collection box 22 is used to collect large pieces of impurities on the surface of the first filter screen 4. When the cleaning scraper 13 is working, it will push the large pieces of garbage accumulated on the first filter screen 4 forward. These scraped-off garbage will be pushed directly into the collection box 22 installed on the side wall along the direction of movement of the scraper.

[0028] Furthermore, the filter holes on the second filter screen 6 are smaller than those on the first filter screen 4. Large particles are blocked by the coarse filter screen, and small particles are processed by the fine filter screen, preventing large impurities from entering the wastewater tank and also preventing fine particles from clogging the outlet 3.

[0029] The working principle of a compressed garbage truck sewage tank filter assembly disclosed in this application is as follows: During operation, wastewater first passes through the first filter screen 4, which traps large debris. Simultaneously, the splash guard 5 above prevents wastewater from splashing. After the wastewater has fallen, the motor 9 drives the gear 11 and rack 14 to move the scraper, scraping the debris on the surface of the first filter screen 4 into the collection box 22 on one side. The filtered wastewater then enters the wastewater tank and passes through a second fine filter screen, trapping even smaller particles to prevent clogging of the outlet 3. When the second filter screen 6 needs cleaning, the lifting assembly uses a winch and steel cable to lift it, facilitating the removal of accumulated fine impurities. Through the combination of double-layer filtration and automatic cleaning, wastewater splashing is effectively prevented, filter clogging is avoided, and manual cleaning is reduced.

[0030] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A filter screen assembly for a compressed garbage truck's sewage tank, comprising a sewage tank body (1), the sewage tank body (1) being mounted on a mounting frame (2), and a water outlet (3) being provided at the bottom of the sewage tank body (1), characterized in that, Also includes: First filter screen (4); The first filter screen (4) is located at the opening of the sewage tank body (1) and is used to block large impurities from entering the sewage tank; Splash-proof enclosure (5), the splash-proof enclosure (5) is set on the top of the sewage tank and located above the first filter screen (4); A cleaning component is disposed on the mounting bracket (2). The output end of the cleaning component abuts against the upper surface of the first filter screen (4). The cleaning component drives the output end to move along the upper surface of the first filter screen (4) to clean large impurities on the first filter screen (4). The second filter (6) is installed inside the sewage tank body (1). The second filter (6) is used to block fine impurities and fine particles in the sewage tank from entering the outlet (3) to block the outlet (3). A lifting component is provided on the sewage tank body (1). The lifting component is used to drive the second filter screen (6) to rise and fall along the vertical direction of the sewage tank body (1) so as to discharge the fine impurities and fine particles on the second filter screen (6) from the sewage tank body (1).

2. The filter screen assembly for a compressed garbage truck sewage tank according to claim 1, characterized in that, The anti-splash enclosure (5) has openings on two opposite side walls, and a groove is also provided on one of the side walls. The groove is located above the opening, and several springs (7) are fixedly installed in the groove. One end of each of the springs (7) is fixedly connected to a blocking plate (8).

3. The wastewater tank filter assembly for a compressed garbage truck according to claim 2, characterized in that, The cross-section of the barrier plate (8) is a right triangle, and the barrier plate (8) has an inclined slope, which faces the opening of the other side wall of the splash guard (5).

4. A filter screen assembly for a compressed garbage truck sewage tank according to claim 3, characterized in that, The cleaning assembly includes a motor (9), which is fixedly mounted on the mounting frame (2). A drive shaft (10) is fixedly mounted on the output end of the motor (9). The drive shaft (10) passes through the mounting frame (2). A gear (11) is fixedly mounted on the outside of the drive shaft (10). Two support frames (12) are fixedly mounted on the side wall of the sewage tank body (1). A cleaning scraper (13) is slidably mounted on the top surface of the two support frames (12). A rack (14) is fixedly mounted on the bottom surface of the cleaning scraper (13). The rack (14) meshes with the gear (11) on the outside of the drive shaft (10).

5. A filter screen assembly for a compressed garbage truck sewage tank according to claim 4, characterized in that, A cleaning scraper head (15) is fixedly installed at one end of the cleaning scraper (13). The cleaning scraper head (15) is triangular prism in shape and is located in the opening of the other side wall of the anti-splash enclosure (5).

6. A filter screen assembly for a compressed garbage truck sewage tank according to claim 1, characterized in that, The two inner walls of the sewage tank body (1) are fixedly installed with slide rails (16), and the two ends of the second filter screen (6) are provided with slide tracks (17) that are adapted to the slide rails (16). The second filter screen (6) and the slide rails (16) are slidably installed.

7. A filter screen assembly for a compressed garbage truck sewage tank according to claim 1, characterized in that, The lifting assembly includes two spiral lifting machines (18), which are fixedly installed on two opposite outer walls of the sewage tank body (1). Each of the two opposite outer walls of the sewage tank body (1) has a through hole. The steel ropes on the two spiral lifting machines (18) extend into the sewage tank body (1) through the through hole. Two mounting shafts (19) are fixedly installed on the inner wall of the sewage tank body (1). Pulleys (20) are rotatably installed on the outer side of each of the two mounting shafts (19). The steel ropes on the two spiral lifting machines (18) are slidably connected to the two pulleys (20). One end of each steel rope is fixedly connected to two branch ropes (21). The two branch ropes (21) are connected to the two opposite ends of the second filter screen (6).

8. A filter screen assembly for a compressed garbage truck sewage tank according to claim 5, characterized in that, A collection box (22) is fixedly installed on the side wall of the sewage tank body (1), and the collection box (22) is used to collect large impurities on the surface of the first filter screen (4).

9. A filter screen assembly for a compressed garbage truck sewage tank according to claim 1, characterized in that, The filter holes on the second filter screen (6) are smaller than the filter holes on the first filter screen (4).

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