A manure sucking vehicle with multi-stage cleaning function of pool wall

Abstract

The present application relates to a kind of with pool wall multistage cleaning function's sucking excrement vehicle, it is related to sucking excrement vehicle technical field.The vehicle body is connected with suction tube on the vehicle body, a plurality of fixed rings are fixed on suction tube, a plurality of fixed rings one side is fixedly connected with fixed rod, fixed rod top end is fixedly connected with handlebar, slot is opened in fixed rod one side, and through groove is opened in the top of handlebar, sliding rod is movably arranged in through groove, installation plate is rotatably arranged in the bottom of sliding rod, scraper is fixed on the one side of installation plate, two rotating rods are rotatably arranged on the bottom wall of fixed rod, and connecting block is fixed on the bottom of rotating rod.The present application is combined with fixed rod and pool wall, operator pulls handle and makes sliding rod move up and down in through groove, and cooperates with triangular block to generate lateral pushing force to installation plate, so that installation plate is intermittently inclined at the same time of vertical lifting, drives scraper multidirectional wall scraping, prevents dirt accumulation around pipe opening by cooperating with extrusion assembly and scraper rod etc.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology, specifically to a septic tank cleaning truck with multi-stage pool wall cleaning function. Background Technology

[0002] In patent application CN221682054U, a vehicle body is included. A base plate is fixedly connected to one side of the vehicle body. Four rollers are provided on the bottom of the base plate. A storage tank is fixedly connected to the top of the base plate. A feed pipe is fixedly connected to one end of the storage tank. The inner wall of the feed pipe is connected to the inner wall of the storage tank. By setting metal strips, under the action of a first threaded rod and a second threaded rod, the first threaded rod and the second threaded rod can respectively drive an extension block to move on one side of the auxiliary block. During the movement, the two extension blocks will respectively pull the two ends of the two metal strips, so that the metal strip on the outer wall of the suction pipe is tightened, thereby clamping and fixing the connection between the suction pipe and the feed pipe. This helps to prevent gaps from appearing at the connection between the suction pipe and the feed pipe, and prevents dirt from flowing out from the gaps, which would be inconvenient for subsequent cleaning.

[0003] In the aforementioned patents, when traditional septic tank cleaning trucks clean the tank walls, the scrapers can mostly only move up and down in the vertical direction, with a single movement pattern. This makes it difficult to scrape stubborn dirt from multiple angles, resulting in incomplete cleaning of the tank walls. At the same time, dirt tends to accumulate near the pipe opening, causing blockage of the suction pipe and a significant decrease in suction efficiency. This not only reduces the quality of the cleaning operation but also affects the smoothness of the vehicle's suction and the stability of the equipment's operation. Summary of the Invention

[0004] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a solution that differs significantly from existing technologies. Specifically, the present invention aims to provide a vacuum truck with multi-stage pool wall cleaning capabilities to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a septic tank cleaning truck with multi-stage pool wall cleaning function, comprising a vehicle body, an adsorption pipe connected to the vehicle body, multiple fixing rings fixed on the outer wall of the adsorption pipe near the input end, a fixing rod fixedly connected to one side of the multiple fixing rings, a handle fixedly connected to the top of the fixing rod, a groove formed on the side of the fixing rod away from the fixing rings, a through groove formed on the top of the handle, a sliding rod movably disposed within the through groove, a mounting plate rotatably disposed at the bottom of the sliding rod, a handle fixedly connected to its top, a scraper fixedly disposed on the side of the mounting plate away from the fixing rings, two rotating rods rotatably disposed on the bottom wall of the fixing rod, the rotating rods extending into the fixing rod, a connecting block fixedly disposed at the bottom of the rotating rod, scrapers fixedly connected to opposite ends of the two connecting blocks, the two scrapers fitting together, the two scrapers rotating through a squeezing assembly, multiple sets of tilting assemblies cooperating with the mounting plate provided on the groove surface, and cleaning assemblies provided on both sides of the mounting plate.

[0006] Preferably, the extrusion assembly includes a groove formed on the groove surface, a slider that slides in cooperation with the groove is fixed at the rear end of the slider, an extrusion block is fixed on the back of the slider, the bottom end of the extrusion block is provided with two rotating grooves that cooperate with two rotating rods, the surface of the rotating rod is fixed with a spiral pattern, and a spiral groove that cooperates with the spiral pattern is formed in the rotating groove.

[0007] Preferably, a torsion spring is fixed between the opposite ends of the two connecting blocks and the inner wall of the fixing rod.

[0008] Preferably, the tilting component includes multiple grooves formed on the groove surface, the multiple grooves being formed on both sides of the slide groove, and the grooves on both sides of the slide groove being alternately staggered along the extension direction of the slide groove, so that the grooves on adjacent sides are raised step by step in the same direction and are distributed in a stepped manner as a whole. Each groove is movably provided with a triangular block that cooperates with the mounting plate, and a spring is fixedly connected between the triangular block and the groove.

[0009] Preferably, the cleaning assembly includes two receiving slots located at the rear end of the mounting plate and near the two sides. Rotating rods are rotatably provided at both ends of the mounting plate. One end of the rotating rod is fixedly connected to the cleaning plate, and the other end is connected to the drive assembly. The rotating rod is cross-shaped, and each protrusion has a bevel.

[0010] Preferably, the drive assembly includes two rotating wheels rotatably disposed at the rear end of the mounting plate, with the outer walls of the two rotating wheels abutting against both sides of the fixed rod. A first rotating roller is fixedly disposed at the rear end of the rotating wheels, and a second rotating roller is disposed at the rear end of the mounting plate, with the second rotating roller located on one side of the receiving groove. The second rotating roller is horizontally parallel to the first rotating roller and is connected by belt drive. A first bevel gear is fixedly disposed on the side of the second rotating roller near the mounting plate, and a second bevel gear is disposed on the side of the first bevel gear meshing with it, with the second bevel gear located in the receiving groove. The second bevel gear is fixedly connected to the rotating rod.

[0011] Preferably, the fixing rod has long grooves on both sides, and a rubber strip is fixed in the long groove. The rubber strip protrudes and abuts against and cooperates with the rotating wheel.

[0012] Preferably, the rear end of the mounting plate is fixedly provided with two protective shells, and the two protective shells are respectively covered outside the corresponding drive components.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention involves attaching a fixed rod to the pool wall, allowing the operator to pull a handle to move the sliding rod up and down within the connecting groove, thus moving the mounting plate and scraper along the pool wall. The grooves on both sides of the groove are staggered and gradually raised in a stepped distribution. Triangular blocks within the grooves are elastically supported by springs. When the mounting plate moves up and down, it touches the inclined surface of the triangular blocks, which generate a lateral pushing force on the mounting plate. This causes the mounting plate to intermittently tilt while vertically rising and falling, changing the scraper's action from a single vertical scraping motion to a combined vertical and tilting scraping motion. After the triangular blocks are compressed and retracted, they can continue to work, thus forming a multi-stage cleaning trajectory. This effectively removes stubborn dirt adhering to the pool wall, reduces cleaning dead corners, and improves the cleanliness of the pool wall during suction operations.

[0014] 2. This invention uses a combination of an extrusion assembly and a scraper to prevent the accumulation of dirt near the inlet of the adsorption tube. When the slide bar moves to its lowest point, the slider moves the extrusion block downwards. The rotating groove at the bottom of the extrusion block engages with the two rotating rods. By utilizing the spiral pattern on the surface of the rotating rod and the spiral groove inside the rotating groove, the vertical downward pressure is converted into rotation of the rotating rod, which in turn drives the two connecting blocks and the scraper to rotate 90 degrees. This causes the scraper to separate and move the dirt at the bottom, breaking up the dirt accumulated near the inlet of the adsorption tube, promoting the flow of surrounding sewage, reducing the risk of blockage, and making vacuum suction smoother. When the slide bar moves upwards, the torsion spring drives the scraper to automatically reset, ensuring that the action can be repeated for the next downward movement.

[0015] 3. In this invention, as the mounting plate moves up and down, its two rotating wheels roll along the rubber strips on both sides of the fixed rod. The protruding parts of the rubber strips abut against the rotating wheels, which can prevent jamming and limit the deflection angle of the mounting plate, ensuring smooth scraping action. The rotation of the rotating wheels drives the rotating rod and the cross-shaped cleaning plate to rotate sequentially through the first rotating roller, belt, second rotating roller and bevel gear pair. The inclined surface of the protruding part of the cleaning plate contacts the pool wall, supplementing the scraping of the pool wall after the scraper has scraped, enhancing the overall cleaning effect. At the same time, the protective shell covers the transmission components to prevent sewage and dirt from entering, reduce wear and malfunctions, and extend the service life of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the adsorption tube and the fixing ring of the present invention; Figure 3 This is a three-dimensional structural diagram of the fixing rod and fixing ring of the present invention; Figure 4 This is a three-dimensional structural diagram of the fixing rod and sliding rod of the present invention; Figure 5 This is a schematic diagram of the fixing rod structure of the present invention; Figure 6 This is a schematic diagram of the slide bar structure of the present invention; Figure 7 This is a schematic diagram of the tilting component structure of the present invention; Figure 8 This is a schematic diagram of the extrusion assembly structure of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the scraper rod of the present invention; Figure 10 This is a schematic diagram of the cleaning component structure of the present invention; Figure 11 This is a schematic diagram of the drive component structure of the present invention; Figure 12 This is a schematic diagram of the planar structure of the rotating wheel and the fixed rod of the present invention.

[0017] In the diagram: 10. Vehicle body; 11. Adsorption tube; 20. Fixing ring; 21. Fixing rod; 22. Handle bar; 23. Groove surface; 24. Slide groove; 25. Connecting groove; 26. Slide rod; 27. Handle; 28. Mounting plate; 29. ​​Scraper; 30. Groove; 31. Triangular block; 32. Spring; 33. Long groove; 34. Rubber strip; 40. Rotating wheel; 41. First rotating roller; 42. Second rotating roller; 43. Belt; 44. First bevel gear; 45. Second bevel gear; 46. Rotating rod; 47. Cleaning plate; 48. Receiving groove; 49. Protective shell; 50. Scraper; 51. Connecting block; 52. Rotating rod; 53. Torsion spring; 54. Slider; 55. Extrusion block; 56. Rotating groove. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0019] Please see Figures 1 to 12 This invention provides a technical solution: a septic tank suction truck with multi-stage pool wall cleaning function, comprising a vehicle body 10, an adsorption pipe 11 connected to the vehicle body 10, multiple fixing rings 20 fixed on the outer wall of the adsorption pipe 11 near the input end, a fixing rod 21 fixedly connected to one side of the multiple fixing rings 20, a handle 22 fixedly connected to the top of the fixing rod 21, a groove 23 formed on the side of the fixing rod 21 away from the fixing rings 20, the groove 23 extending axially along the fixing rod 21 but not extending to the top, leaving a section of ungrooved wall at the top of the fixing rod 21, a through groove 25 formed at the top of the handle 22, the through groove 25 extending downward from the top of the handle 22 and passing through... The wall without grooves is connected to the groove surface 23. A sliding rod 26 is movably installed in the groove 25. The bottom end of the sliding rod 26 is rotatably equipped with a mounting plate 28, and the top end of the sliding rod 26 is fixedly connected to a handle 27. A scraper 29 is fixed on the side of the mounting plate 28 away from the fixing ring 20. Two rotating rods 52 are rotatably installed on the bottom wall of the fixing rod 21, and the rotating rods 52 extend into the fixing rod 21. A connecting block 51 is fixed at the bottom end of the rotating rod 52. A scraper 50 is fixedly connected to one end of the two connecting blocks 51. The two scraper 50 are in contact with each other. The two scraper 50 are adjusted to rotate by a squeezing assembly. Multiple sets of tilting assemblies that cooperate with the mounting plate 28 are provided on the groove surface 23. Cleaning assemblies are provided on both sides of the mounting plate 28.

[0020] In practice, before starting work, the fixing rod 21 is inserted into the pool and made to fit against the pool wall. The fixing rod 21 is fixed to the outer wall of the adsorption tube 11 near the input end by multiple fixing rings 20. The adsorption tube 11 is connected to the vehicle body 10. After the vacuum pump is started, the dirt and sewage in the pool are sucked into the vehicle body 10 through the adsorption tube 11. The operator holds the handle 22 with one hand and pulls the handle 27 with the other hand, thereby driving the slide rod 26 to move up and down in the connecting groove 25. The bottom end of the slide rod 26 is rotated to connect to the mounting plate 28. Through the mounting plate 28, the scraper 29 moves up and down along the pool wall to scrape off the dirt attached to the pool wall.

[0021] As a further embodiment of the present invention, the extrusion assembly includes a groove 24 formed on the groove surface 23, a slider 54 that slides in cooperation with the groove 24 is fixed at the rear end of the slider 26, an extrusion block 55 is fixed on the back of the slider 54, and two rotating grooves 56 that cooperate with two rotating rods 52 are formed at the bottom end of the extrusion block 55. The rotating rods 52 are fixed with spiral patterns, and spiral grooves that cooperate with the spiral patterns are formed in the rotating grooves 56.

[0022] In practice, when the mounting plate 28 moves down to the lowest end, the slider 54 fixed to the rear end of the slide bar 26 drives the squeezing block 55 to the lowest position. The two rotating grooves 56 at the bottom of the squeezing block 55 engage with the two rotating rods 52. Since the rotating rod 52 has a spiral pattern on its surface and the rotating groove 56 has a spiral groove, the two work together to make the rotating rod 52 rotate, which in turn drives the two connecting blocks 51 and the scraper 50 to rotate 90 degrees. When the two scrapers 50 separate, they can move the dirt at the bottom.

[0023] As a further embodiment of the present invention, a torsion spring 53 is fixed between the opposite ends of the two connecting blocks 51 and the inner wall of the fixing rod 21.

[0024] In practice, when the squeezing block 55 moves upward with the slide bar 26, the two scraper bars 50 are reset under the action of the torsion spring 53.

[0025] As a further embodiment of the present invention, the tilting component includes a plurality of grooves 30 formed on the groove surface 23. The plurality of grooves 30 are respectively formed on both sides of the slide groove 24, and the grooves 30 on both sides of the slide groove 24 are alternately staggered along the extension direction of the slide groove 24, so that the grooves 30 on adjacent sides are raised step by step in the same direction and are distributed in a stepped manner. Each groove 30 is movably provided with a triangular block 31 that cooperates with the mounting plate 28, and a spring 32 is fixedly connected between the triangular block 31 and the groove 30.

[0026] In practice, during the up-and-down movement of the mounting plate 28, when the mounting plate 28 touches the triangular block 31 in the groove 30, the grooves 30 on both sides of the slide 24 are staggered and gradually raised in a stepped distribution. The inclined surface of the triangular block 31 will generate a lateral pushing force on the mounting plate 28, causing the mounting plate 28 to tilt while moving up and down. The triangular block 31 is elastically installed in the groove 30 by the spring 32. After being pressed, it can retract and reset, thereby realizing the continuous intermittent tilting drive of the mounting plate 28, so that the scraper 29 can scrape the wall at an angle while scraping vertically, forming a multi-level cleaning effect.

[0027] As a further embodiment of the present invention, the cleaning assembly includes two receiving grooves 48 opened at the rear end of the mounting plate 28 and near the two sides. The mounting plate 28 is rotatably provided with rotating rods 46 at both ends. One end of the rotating rod 46 is fixedly connected to the cleaning plate 47, and the other end is connected to the driving assembly. The rotating rod 46 is cross-shaped, and each protrusion is provided with a slope. The slope is used to contact the pool wall and scrape off dirt when the cleaning plate 47 rotates.

[0028] In practice, the rotating rod 46 drives the cross-shaped cleaning plate 47 to rotate and clean the pool wall. The inclined surface on each protruding part of the cleaning plate 47 contacts the pool wall when rotating, scraping away dirt and enhancing the cleaning effect.

[0029] As a further embodiment of the present invention, the driving assembly includes two rotating wheels 40 rotatably disposed at the rear end of the mounting plate 28, and the outer walls of the two rotating wheels 40 are in contact with both sides of the fixed rod 21. A first rotating roller 41 is fixedly disposed at the rear end of the rotating wheels 40, and a second rotating roller 42 is disposed at the rear end of the mounting plate 28. The second rotating roller 42 is located on one side of the receiving groove 48. The second rotating roller 42 is horizontally parallel to the first rotating roller 41 and is connected by a belt 43. A first bevel gear 44 is fixedly disposed on the side of the second rotating roller 42 near the mounting plate 28. A second bevel gear 45 is disposed on one side of the first bevel gear 44 and meshes with it. The second bevel gear 45 is located in the receiving groove 48. The second bevel gear 45 is fixedly connected to the rotating rod 46.

[0030] In practice, the rotating wheel 40 rotates, driving the first rotating roller 41 to rotate, which in turn drives the second rotating roller 42 to rotate via the belt 43. The second rotating roller 42 drives the first bevel gear 44 to rotate, which in turn drives the second bevel gear 45 to rotate. The second bevel gear 45 drives the rotating rod 46 to rotate, thereby driving the cleaning plate 47 to clean the pool wall.

[0031] As a further embodiment of the present invention, the fixing rod 21 has long grooves 33 on both sides, and a rubber strip 34 is fixed in the long grooves 33. The rubber strip 34 protrudes and abuts against and cooperates with the rotating wheel 40.

[0032] In practice, as the mounting plate 28 moves up and down, two rotating wheels 40 located at the rear end of the mounting plate 28 roll along with the mounting plate 28 on the rubber strips 34 on both sides of the fixing rod 21. The protruding part of the rubber strip 34 abuts against the rotating wheels 40, which plays the role of elastic limiting and preventing jamming. At the same time, the two sets of rotating wheels 40 can also limit the deflection angle of the mounting plate 28.

[0033] As a further embodiment of the present invention, two protective shells 49 are fixedly provided at the rear end of the mounting plate 28, and the two protective shells 49 are respectively covered outside the corresponding drive components.

[0034] In practice, the protective shell 49 is installed outside the drive assembly to protect the transmission components such as the first rotating roller 41, the second rotating roller 42, the belt 43, the first bevel gear 44, and the second bevel gear 45.

[0035] Working principle: Before operation, the fixing rod 21 is inserted into the pool and made to fit against the pool wall. The fixing rod 21 is fixed to the outer wall of the adsorption tube 11 near the input end by multiple fixing rings 20. The adsorption tube 11 is connected to the vehicle body 10. After the vacuum pump is started, the dirt and sewage in the pool are sucked into the vehicle body 10 through the adsorption tube 11. The operator holds the handle 22 with one hand and pulls the handle 27 with the other hand, thereby driving the slide rod 26 to move up and down in the connecting groove 25. The bottom end of the slide rod 26 is rotatably connected to the mounting plate 28. Through the mounting plate 28, the scraper 29 moves up and down along the pool wall to scrape off the dirt attached to the pool wall.

[0036] During the up-and-down movement of the mounting plate 28, when the mounting plate 28 touches the triangular block 31 in the groove 30, the grooves 30 on both sides of the slide 24 are staggered and gradually raised in a stepped distribution. The inclined surface of the triangular block 31 will generate a lateral pushing force on the mounting plate 28, causing the mounting plate 28 to tilt while moving up and down. The triangular block 31 is elastically installed in the groove 30 by the spring 32. After being pressed, it can retract and reset, thereby realizing the continuous intermittent tilting drive of the mounting plate 28, so that the scraper 29 can scrape the wall vertically and tilt at the same time, forming a multi-stage cleaning effect.

[0037] As the mounting plate 28 moves up and down, two rotating wheels 40 located at the rear end of the mounting plate 28 roll along with the mounting plate 28 on the rubber strips 34 on both sides of the fixing rod 21. The protruding parts of the rubber strips 34 abut against the rotating wheels 40, which serves to elastically limit and prevent jamming. At the same time, the two sets of rotating wheels 40 can also limit the deflection angle of the mounting plate 28. The rotation of the rotating wheels 40 drives the first rotating roller 41 to rotate, which in turn drives the second rotating roller 42 to rotate via the belt 43. The second rotating roller 42 drives the first bevel gear 44 to rotate, which in turn drives the second bevel gear 45 to rotate. The second bevel gear 45 drives the rotating rod 46 to rotate, which in turn drives the cross-shaped cleaning plate 47 to rotate and clean the pool wall. The inclined surface on each protruding part of the cleaning plate 47 contacts the pool wall when rotating, scraping off dirt and enhancing the cleaning effect. The protective shell 49 is installed outside the drive assembly to protect the transmission components such as the first rotating roller 41, the second rotating roller 42, the belt 43, the first bevel gear 44, and the second bevel gear 45.

[0038] When the mounting plate 28 moves downward to the lowest end, the slider 54 fixed to the rear end of the slide rod 26 drives the squeezing block 55 to the lowest position. The two rotating grooves 56 at the bottom of the squeezing block 55 engage with the two rotating rods 52. Since the rotating rod 52 has a spiral pattern on its surface and the rotating groove 56 has a spiral groove, the two work together to make the rotating rod 52 rotate, which in turn drives the two connecting blocks 51 and the scraper 50 to rotate 90 degrees. When the two scrapers 50 separate, they can move the dirt at the bottom to prevent it from accumulating at the input end of the suction tube 11, and at the same time make the surrounding liquid flow, making the suction smoother. When the squeezing block 55 moves upward with the slide rod 26, the two scrapers 50 return to their original position under the action of the torsion spring 53.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A septic tank suction truck with multi-stage pool wall cleaning function, comprising a vehicle body (10), characterized in that: An adsorption tube (11) is connected to the vehicle body (10). Multiple fixing rings (20) are fixed on the outer wall of the adsorption tube (11) near the input end. A fixing rod (21) is fixedly connected to one side of the multiple fixing rings (20). A handle rod (22) is fixedly connected to the top of the fixing rod (21). A groove (23) is opened on the side of the fixing rod (21) away from the fixing rings (20). A connecting groove (25) is opened through the top of the handle rod (22). A sliding rod (26) is movably arranged in the connecting groove (25). A mounting plate (28) is rotatably provided at the bottom end of the sliding rod (26), and a handle is fixedly connected to its top end. (27) A scraper (29) is fixed on the side of the mounting plate (28) away from the fixing ring (20). Two rotating rods (52) are rotatably provided on the bottom wall of the fixing rod (21), and the rotating rods (52) extend into the fixing rod (21). A connecting block (51) is fixed at the bottom end of the rotating rod (52). A scraper (50) is fixedly connected to one end of the two connecting blocks (51). The two scrapers (50) are in contact with each other. The two scrapers (50) are adjusted to rotate by the squeezing assembly. Multiple sets of tilting assemblies that cooperate with the mounting plate (28) are provided on the groove surface (23). Cleaning assemblies are provided on both sides of the mounting plate (28).

2. The septic tank suction truck with multi-stage pool wall cleaning function according to claim 1, characterized in that: The extrusion assembly includes a groove (24) formed on the groove surface (23). The rear end of the slide rod (26) is fixed with a slider (54) that slides in cooperation with the groove (24). An extrusion block (55) is fixed on the back of the slider (54). The bottom end of the extrusion block (55) is provided with two rotating grooves (56) that cooperate with two rotating rods (52). The surface of the rotating rod (52) is fixed with a spiral pattern. The rotating groove (56) is provided with a spiral groove that cooperates with the spiral pattern.

3. A septic tank suction truck with multi-stage pool wall cleaning function according to claim 2, characterized in that: A torsion spring (53) is fixed between the opposite ends of the two connecting blocks (51) and the inner wall of the fixing rod (21).

4. A septic tank suction truck with multi-stage pool wall cleaning function according to claim 2, characterized in that: The tilting component includes a plurality of grooves (30) formed on the groove surface (23). The plurality of grooves (30) are respectively formed on both sides of the slide groove (24), and the grooves (30) on both sides of the slide groove (24) are alternately staggered along the extension direction of the slide groove (24), so that the grooves (30) on adjacent sides are raised in the same direction in sequence and are distributed in a stepped manner. Each groove (30) is provided with a triangular block (31) that cooperates with the mounting plate (28), and a spring (32) is fixedly connected between the triangular block (31) and the groove (30).

5. A septic tank suction truck with multi-stage pool wall cleaning function according to claim 1, characterized in that: The cleaning assembly includes two receiving slots (48) located at the rear end of the mounting plate (28) and near the two sides. The mounting plate (28) has rotating rods (46) rotatably mounted at both ends. One end of the rotating rod (46) is fixedly connected to the cleaning plate (47), and the other end is connected to the drive assembly. The rotating rod (46) is cross-shaped, and each protrusion has a bevel.

6. A septic tank suction truck with multi-stage pool wall cleaning function according to claim 5, characterized in that: The drive assembly includes two rotating wheels (40) rotatably disposed at the rear end of the mounting plate (28), and the outer walls of the two rotating wheels (40) are in contact with both sides of the fixed rod (21). A first rotating roller (41) is fixedly disposed at the rear end of the rotating wheel (40), and a second rotating roller (42) is disposed at the rear end of the mounting plate (28). The second rotating roller (42) is located on one side of the receiving groove (48). The second rotating roller (42) is horizontally parallel to the first rotating roller (41) and is connected by a belt (43). A first bevel gear (44) is fixedly disposed on the side of the second rotating roller (42) near the mounting plate (28). A second bevel gear (45) is disposed on one side of the first bevel gear (44) and meshes with it. The second bevel gear (45) is located in the receiving groove (48). The second bevel gear (45) is fixedly connected to the rotating rod (46).

7. A septic tank suction truck with multi-stage pool wall cleaning function according to claim 6, characterized in that: The fixing rod (21) has long grooves (33) on both sides, and a rubber strip (34) is fixed in the long groove (33). The rubber strip (34) protrudes and abuts against and cooperates with the rotating wheel (40).

8. A septic tank suction truck with multi-stage pool wall cleaning function according to claim 7, characterized in that: The mounting plate (28) has two protective shells (49) fixedly installed at its rear end, and the two protective shells (49) respectively cover the corresponding drive components.

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