A rectangular negative pressure sewage suction tank pipeline robot for sewage suction trucks

Abstract

The present invention discloses a rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle, comprising a sewage suction tank body, a filter unit and a sealing plate, wherein a sewage suction pipe interface is fixed to one end of the upper surface of the sewage suction tank body, and a vacuum pump interface is reserved at the other end of the upper surface of the sewage suction tank body, and a sewage cleaning pipe head is fixed to the side of the vacuum pump interface, the filter unit is fixed to the bottom of the sewage suction tank body, and the bottom of the filter unit is connected to the upper surface of a discharge plate, and a sewage discharge port is reserved at the end of the discharge plate, a feed pipe port is arranged on the outside of the sewage cleaning pipe head, and a debris removal port is arranged on the outside of the feed pipe port, and a sewage viewing pipe is installed on the outside of the debris removal port. The rectangular negative pressure sewage suction tank pipeline robot for the sewage suction vehicle reduces the difficulty of sewage filtering during use, and is convenient for discharging impurities and sewage after filtering, and can avoid clogging of the filter unit, thereby improving the practicability of the device.

Description

Technical Field

[0001] The invention relates to the technical field of sewage suction sanitation vehicles, and in particular to a rectangular negative pressure sewage suction tank pipeline robot for sewage suction vehicles. Background Art

[0002] Sewage suction trucks are special sanitation vehicles that collect, transfer, clean and transport sludge and sewage to avoid secondary pollution. Sewage suction trucks can self-prime and self-drain, work quickly, have large capacity and are easy to transport. They are suitable for collecting and transporting liquid substances such as feces, mud, and crude oil. Sewage suction trucks use vacuum pumps to achieve suction through large-flow airflow and negative pressure. They are particularly suitable for suction, transportation and discharge of silt in sewers. They can suck mud, silt, gravel, fiber fabrics and other types of dirt in urban sewers. However, existing sewage suction devices have the following problems:

[0003] 1. During the use of the device, the efficiency of filtering debris is low and it does not have a good filtering effect. At the same time, it is difficult to discharge sewage after cleaning, which increases the difficulty of using the device;

[0004] 2. During the use of the device, the filter unit is prone to clogging, and the filter unit cannot be cleaned normally after being clogged.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original sewage suction truck. Summary of the invention

[0006] The purpose of the present invention is to provide a rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle, so as to solve the problem that during the use of the device proposed in the above background technology, it is difficult to filter out debris and it is inconvenient to discharge sewage. At the same time, the filtering unit of the device is prone to blockage when in use, which increases the difficulty of using the device.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle, comprising a sewage suction tank body, a filter unit and a sealing plate, a sewage suction pipe interface is fixed at one end of the upper surface of the sewage suction tank body, and a vacuum pump interface is reserved at the other end of the upper surface of the sewage suction tank body, and a sewage cleaning pipe head is fixed on the side of the vacuum pump interface, the filter unit is fixed to the bottom of the sewage suction tank body, and the bottom of the filter unit is connected to the upper surface of the discharge plate, and a sewage discharge port is reserved at the end of the discharge plate, a feed pipe port is arranged on the outside of the sewage cleaning pipe head, and a debris removal port is arranged on the outside of the feed pipe port, a sewage sight pipe is installed on the outside of the debris removal port, and the end of the sewage sight pipe is connected to the middle position of the sewage suction tank body through a connecting pipe head, a motor is installed on the side of the sewage suction tank body, and a first stirring rod is arranged in the middle position of the motor, a coarse filter cylinder is fixed on the outside of the first stirring rod, and the upper surface of the coarse filter cylinder is connected to the fixed block through the fixed block. The sewage suction tank body is connected to each other, one end of the belt is connected to the end of the first stirring rod, and the other end of the belt is connected to the second stirring rod, and a first gear is fixed to the middle position of the second stirring rod, the outer side of the first gear is connected to the second gear, and a connecting shaft is fixed to the middle position of the second gear, and an extrusion plate is installed at the end of the connecting shaft, a cleaning plate is arranged on the outer side of the extrusion plate, a cleaning brush is fixed to the bottom of the cleaning plate, and a limiting block is fixed to the end of the cleaning plate, a first filter plate is arranged on the outer side of the limiting block, and a limiting groove is provided on the upper surface of the first filter plate, and a first spring is fixed at the end of the limiting groove, the sealing plate is located in the middle position of the sewage suction tank body, and a handle is fixed on the upper surface of the sealing plate, and a sliding groove is provided on the outer side of the sealing plate, a card block is fixed at the end of the sealing plate, and the side of the card block is connected to the sewage suction tank body through the second spring, and a second filter plate is fixed to the bottom of the sewage suction tank body.

[0008] Preferably, the cross section of the discharge plate is arranged in a "U" shape, and the discharge plate and the filter unit are fixedly installed by welding connection.

[0009] Preferably, the first stirring rod is symmetrically arranged about the axis of the coarse filter cylinder, and the first stirring rod and the coarse filter cylinder constitute a rotating installation structure, and the first stirring rod is arranged in a spiral shape.

[0010] Preferably, the coarse filter cylinder is arranged in a honeycomb shape, and the coarse filter cylinder is fixed to the sewage suction tank body through a fixing block.

[0011] Preferably, the first gear and the second stirring rod adopt an integrated mounting structure, and the first gear and the second gear are meshingly connected.

[0012] Preferably, the extrusion plate and the second gear are coaxially arranged, and the extrusion plate is conically arranged.

[0013] Preferably, the extrusion plate and the first filter plate form a mutually rotatable mounting structure, and the end of the extrusion plate fits with the side of the cleaning plate.

[0014] Preferably, two cleaning plates are symmetrically arranged about the axis of the first filter plate, and the cleaning plates and the first filter plate form a sliding mounting structure.

[0015] Preferably, the cleaning plate is engaged with the first filter plate via a limiting block, and the cleaning plate and the first filter plate are arranged perpendicular to each other.

[0016] Preferably, the sealing plate and the sewage suction tank body form a sliding installation structure, and the sealing plate is symmetrically arranged about the axis of the sewage suction tank body.

[0017] Compared with the prior art, the invention has the following beneficial effects: the rectangular negative pressure sewage suction tank pipeline robot for sewage suction vehicles reduces the difficulty of sewage filtering during use, and is convenient for discharging impurities and sewage after filtering, and can avoid clogging of the filter unit, thereby improving the practicability of the device;

[0018] 1. During the operation of the device, the vacuum pump is connected through the vacuum pump interface, and then the debris is sucked into the interior of the suction tank body. After the debris is sucked in, the motor drives the first stirring rod to rotate. After the first stirring rod rotates, the speed of debris filtration can be increased, and the larger debris is retained in the interior of the coarse filter cylinder. Then the sewage is filtered again through the first filter plate and the second filter plate, thereby improving the debris filtration effect. The motor drives the second stirring rod to rotate through the belt, which can push the debris to the sewage outlet, so that sewage can be discharged. The large debris inside the coarse filter cylinder is discharged outward through the debris removal port. After the device is used, the sealing plate can be stretched outward, so that the interior of the device can be cleaned as a whole through the position of the sealing plate;

[0019] 2. During the dirt filtering process, the second stirring rod is driven to rotate by the belt and the motor. Since the first gear is fixed at the middle position of the second stirring rod, when the second stirring rod rotates, the first gear can drive the extrusion plate to rotate through the second gear and the connecting shaft. When the extrusion plate rotates, the cleaning plate can be squeezed outward. The cleaning plate can slide on the first filter plate through the limit block under the influence of pressure, and drive the cleaning brush to clean the first filter plate and the second filter plate to avoid blockage. When the connecting shaft continues to drive the extrusion plate to rotate and the extrusion plate is separated from the cleaning plate at one end, the rebound force of the first spring can drive the cleaning plate to return to its original position. This reciprocating process can improve the filtering effect of the device and improve the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the overall three-dimensional external structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall three-dimensional cross-sectional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall front cross-sectional structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the overall top view structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the connection structure between the sewage suction tank body and the clamping block of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection structure between the extrusion plate and the first filter plate of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the limit block and the first filter plate of the present invention.

[0027] In the figure: 1. Sewage suction tank body; 2. Sewage suction pipe interface; 3. Vacuum pump interface; 4. Sewage cleaning pipe head; 5. Filter unit; 6. Discharge plate; 7. Sewage discharge port; 8. Inlet pipe port; 9. De-impurity port; 10. Sewage viewing pipe; 11. Connecting pipe head; 12. Motor; 13. First stirring rod; 14. Coarse filter cylinder; 15. Fixed block; 16. Belt; 17. Second stirring rod; 18. First gear; 19. Second gear; 20. Connecting shaft; 21. Extrusion plate; 22. Cleaning plate; 23. Cleaning brush; 24. Limiting block; 25. First filter plate; 26. Limiting groove; 27. First spring; 28. Sealing plate; 29. ​​Handle; 30. Slide; 31. Block; 32. Second spring; 33. Second filter plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-7The present invention provides a technical solution: a rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle, comprising a sewage suction tank body 1, a sewage suction pipe interface 2, a vacuum pump interface 3, a sewage cleaning pipe head 4, a filtering unit 5, a discharge plate 6, a sewage discharge port 7, a feed pipe port 8, a debris removal port 9, a sewage viewing pipe 10, a connecting pipe head 11, a motor 12, a first stirring rod 13, a coarse filter cylinder 14, a fixing block 15, a belt 16, a second stirring rod 17, a first gear 18, a second gear 19, a connecting shaft 20, an extrusion plate 21, a cleaning plate 22, a cleaning brush 23, a limit block 24, a first filter plate 25, a limit groove 26, a first spring 27, a sealing plate 28, a handle 29, a slide groove 30, and a card block 31 and a second spring 32, a sewage suction pipe interface 2 is fixed to one end of the upper surface of the sewage suction tank body 1, and a vacuum pump interface 3 is reserved at the other end of the upper surface of the sewage suction tank body 1, and a sewage cleaning pipe head 4 is fixed on the side of the vacuum pump interface 3, the filter unit 5 is fixed to the bottom of the sewage suction tank body 1, and the bottom of the filter unit 5 is connected to the upper surface of the discharge plate 6, and a sewage discharge port 7 is reserved at the end of the discharge plate 6, a feed pipe port 8 is arranged on the outside of the sewage cleaning pipe head 4, and a debris removal port 9 is arranged on the outside of the feed pipe port 8, a visual sewage pipe 10 is installed on the outside of the debris removal port 9, and the end of the visual sewage pipe 10 is connected to the middle position of the sewage suction tank body 1 through a connecting pipe head 11, and the sewage suction tank body A motor 12 is installed on the side of the body 1, and a first stirring rod 13 is arranged in the middle of the motor 12, a coarse filter cylinder 14 is fixed on the outside of the first stirring rod 13, and the upper surface of the coarse filter cylinder 14 is connected to the suction tank body 1 through a fixing block 15, one end of a belt 16 is connected to the end of the first stirring rod 13, and the other end of the belt 16 is connected to the second stirring rod 17, and a first gear 18 is fixed in the middle of the second stirring rod 17, a second gear 19 is connected to the outside of the first gear 18, and a connecting shaft 20 is fixed in the middle of the second gear 19, and an extrusion plate 21 is installed at the end of the connecting shaft 20, and a cleaning plate 21 is arranged on the outside of the extrusion plate 21. A cleaning plate 22 is provided, and a cleaning brush 23 is fixed to the bottom of the cleaning plate 22, and a limiting block 24 is fixed at the end of the cleaning plate 22, a first filter plate 25 is arranged on the outside of the limiting block 24, and a limiting groove 26 is provided on the upper surface of the first filter plate 25, and a first spring 27 is fixed at the end of the limiting groove 26, a sealing plate 28 is located in the middle position of the sewage suction tank body 1, and a handle 29 is fixed on the upper surface of the sealing plate 28, and a sliding groove 30 is provided on the outside of the sealing plate 28, a clamping block 31 is fixed at the end of the sealing plate 28, and the side of the clamping block 31 is connected to the sewage suction tank body 1 through a second spring 32, and a second filter plate 33 is fixed to the bottom of the sewage suction tank body 1;

[0030] The cross section of the discharge plate 6 is set in a "U" shape, and the discharge plate 6 and the filter unit 5 are fixedly installed by welding. When the filtered water falls to the position of the discharge plate 6, the "U" shape can make the sewage quickly converge downward, reducing the difficulty of sewage discharge. The welding connection can improve the stability of the installation between the two and avoid falling during use.

[0031] The first stirring rod 13 is symmetrically arranged about the axis of the coarse filter cylinder 14, and the first stirring rod 13 and the coarse filter cylinder 14 constitute a rotating installation structure, and the first stirring rod 13 is arranged in a spiral shape, when the motor 12 is working, it can drive the first stirring rod 13 to rotate, and the first stirring rod 13 is arranged in a spiral shape so that the dirt can be quickly stirred, which can improve the efficiency of sewage filtration;

[0032] The coarse filter cylinder 14 is arranged in a honeycomb shape, and the coarse filter cylinder 14 is fixed between the fixing block 15 and the suction tank body 1. The coarse filter cylinder 14 arranged in a honeycomb shape can filter large-volume debris, and prevent the debris from falling into the filter unit 5 through the coarse filter cylinder 14 after being filtered, which increases the difficulty of using the device;

[0033] The first gear 18 and the second stirring rod 17 adopt an integrated installation structure, and the first gear 18 and the second gear 19 are meshedly connected. The integrated arrangement can drive the first gear 18 to rotate when the second stirring rod 17 rotates. Since the first gear 18 and the second gear 19 are meshedly connected, when the first gear 18 rotates, the second gear 19 can be driven to rotate;

[0034] The extrusion plate 21 and the second gear 19 are coaxially arranged, and the extrusion plate 21 is conically arranged. The extrusion plate 21 and the second gear 19 are connected by a connecting shaft 20 at the same time. When the second gear 19 rotates, the connecting shaft 20 drives the extrusion plate 21 to rotate. The conical arrangement can cause pressure on the cleaning plate 22 when the extrusion plate 21 rotates, so that the cleaning plate 22 moves outward.

[0035] The extrusion plate 21 and the first filter plate 25 form a mutually rotatable mounting structure, and the end of the extrusion plate 21 is in contact with the side of the cleaning plate 22. The extrusion plate 21 is driven by the connecting shaft 20 to rotate with the first filter plate 25. The extrusion plate 21 is in contact with the side of the cleaning plate 22, so that the extrusion plate 21 can drive the cleaning plate 22 to slide outward after rotating.

[0036] Two cleaning plates 22 are symmetrically arranged about the axis of the first filter plate 25, and the cleaning plates 22 and the first filter plate 25 form a sliding installation structure. When the cleaning plates 22 are pressed and slide on the first filter plate 25, the cleaning plates 22 can drive the cleaning brush 23 to clean the first filter plate 25 and the second filter plate 33, thereby avoiding blockage during the sewage filtration process and improving the filtering effect of the device;

[0037] The cleaning plate 22 is engaged with the first filter plate 25 through the stopper 24, and the cleaning plate 22 and the first filter plate 25 are arranged perpendicular to each other. The engagement connection can prevent the cleaning plate 22 from falling when under pressure, and the perpendicularity can make the cleaning brush 23 fit the first filter plate 25 and the second filter plate 33 after the cleaning plate 22 is installed.

[0038] The sealing plate 28 and the sewage suction tank body 1 form a sliding installation structure, and the sealing plate 28 is symmetrically arranged about the axis of the sewage suction tank body 1. The sealing plate 28 is engaged with the sewage suction tank body 1 through the clamping block 31. When the interior of the sewage suction tank body 1 needs to be cleaned, the sealing plate 28 is manually stretched outward through the handle 29, and then the interior of the sewage suction tank body 1 can be cleaned, which can reduce the difficulty of cleaning the interior of the sewage suction tank body 1. After cleaning, the pulling force on the handle 29 is removed, and the rebound force of the second spring 32 can drive the sealing plate 28 to reset, thereby completing the re-sealing of the sewage suction tank body 1.

[0039] Working principle: When using the rectangular negative pressure sewage suction tank pipeline robot for sewage suction trucks, first Figure 1-4 As shown, first, the vacuum pump is connected to the cleaning pipe head 4 through the vacuum pump interface 3, and then the vacuum pump can transport the debris through the cleaning pipe head 4 to the inside of the suction tank body 1, and at this time, the debris enters the inside of the coarse filter cylinder 14, and then the motor 12 works to drive the first stirring rod 13 to rotate. When the first stirring rod 13 rotates, the debris can be moved, so as to improve the efficiency of debris filtering. After the debris is filtered, small debris and waste liquid fall into the inside of the filter unit 5 through the honeycomb-shaped coarse filter cylinder 14, and the debris is filtered by the filter unit 5 and then falls into the inside of the discharge plate 6. At the same time, when the motor 12 drives the first stirring rod 13 to rotate, the second stirring rod 17 can be driven to rotate through the belt 16. Since the spiral direction of the second stirring rod 17 is opposite to that of the first stirring rod 13, after the waste liquid and small debris fall, they can be driven to the inside of the sewage outlet 7. After the waste liquid and small debris are processed, the impurity removal port 9 can be opened, and the debris inside the coarse filter cylinder 14 can be cleaned;

[0040] according to Figure 3 , 6 and Figure 7As shown, during the filtering process of debris, the second stirring rod 17 rotates to drive the first gear 18 to rotate. Since the first gear 18 is meshed with the second gear 19, and the second gear 19 is coaxially arranged with the extrusion plate 21, when the first gear 18 rotates, the extrusion plate 21 can rotate with it and squeeze the cleaning plate 22. The cleaning plate 22 can slide on the limiting groove 26 through the limiting block 24 under the influence of pressure, and then the cleaning plate 22 drives the cleaning brush 23 to clean the first filter plate 25 and the second filter plate 33, which can avoid clogging during the filtering process. When the extrusion plate 21 is separated from the cleaning plate 22 at one end, the rebound force of the first spring 27 can drive the cleaning plate 22 to reset, and this reciprocating movement can improve the filtering efficiency of the device.

[0041] according to Figure 1 and Figure 3-5 As shown, after the entire device is used, its interior is cleaned, the handle 29 is manually stretched outward, and then the sealing plate 28 moves outward along with the handle 29, and then the interior of the sewage suction tank body 1 can be cleaned. After the interior of the sewage suction tank body 1 is cleaned, the pulling force on the handle 29 is removed, and the rebound force of the second spring 32 drives the sealing plate 28 to seal the sewage suction tank body 1 again.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle, comprising a sewage suction tank body (1), a filter unit (5) and a sealing plate (28), characterized in that: A sewage suction pipe interface (2) is fixed to one end of the upper surface of the sewage suction tank body (1), and a vacuum pump interface (3) is reserved at the other end of the upper surface of the sewage suction tank body (1), and a sewage cleaning pipe head (4) is fixed to the side of the vacuum pump interface (3), the filter unit (5) is fixed to the bottom of the sewage suction tank body (1), and the bottom of the filter unit (5) is connected to the upper surface of the discharge plate (6), and a sewage discharge port (7) is reserved at the end of the discharge plate (6), the outer side of the sewage cleaning pipe head (4) is provided with a feed pipe port (8), and the outer side of the feed pipe port (8) is provided with a debris removal port (9), and the debris removal port (9) A visual sewage pipe (10) is installed on the outside of the visual sewage pipe (10), and the end of the visual sewage pipe (10) is connected to the middle position of the sewage suction tank body (1) through a connecting pipe head (11); a motor (12) is installed on the side of the sewage suction tank body (1), and a first stirring rod (13) is provided in the middle position of the motor (12); a coarse filter cylinder (14) is fixed on the outside of the first stirring rod (13), and the upper surface of the coarse filter cylinder (14) is connected to the sewage suction tank body (1) through a fixing block (15); one end of a belt (16) is connected to the end of the first stirring rod (13), and the other end of the belt (16) is connected to the first stirring rod (13). The two stirring rods (17) are connected to each other, and a first gear (18) is fixed at the middle position of the second stirring rod (17), the outer side of the first gear (18) is connected to the second gear (19), and a connecting shaft (20) is fixed at the middle position of the second gear (19), and an extrusion plate (21) is installed at the end of the connecting shaft (20), a cleaning plate (22) is arranged at the outer side of the extrusion plate (21), and a cleaning brush (23) is fixed at the bottom of the cleaning plate (22), and a limiting block (24) is fixed at the end of the cleaning plate (22), and a first filter plate (24) is arranged at the outer side of the limiting block (24). 25), and a limiting groove (26) is provided on the upper surface of the first filter plate (25), and a first spring (27) is fixed at the end of the limiting groove (26), the sealing plate (28) is located in the middle of the sewage suction tank body (1), and a handle (29) is fixed on the upper surface of the sealing plate (28), and a sliding groove (30) is provided on the outer side of the sealing plate (28), a clamping block (31) is fixed at the end of the sealing plate (28), and the side of the clamping block (31) is connected to the sewage suction tank body (1) through a second spring (32), and a second filter plate (33) is fixed at the bottom of the sewage suction tank body (1).

2. A rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle according to claim 1, characterized in that: The cross section of the discharge plate (6) is arranged in a "U" shape, and the discharge plate (6) and the filter unit (5) are connected by welding to form a fixed installation structure.

3. The rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle according to claim 1, characterized in that: The first stirring rod (13) is symmetrically arranged about the axis of the coarse filter cylinder (14), the first stirring rod (13) and the coarse filter cylinder (14) form a rotating installation structure, and the first stirring rod (13) is arranged in a spiral shape.

4. The rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle according to claim 1, characterized in that: The coarse filter cylinder (14) is arranged in a honeycomb shape, and the coarse filter cylinder (14) is fixed to the sewage suction tank body (1) via a fixing block (15).

5. The rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle according to claim 1, characterized in that: The first gear (18) and the second stirring rod (17) adopt an integrated mounting structure, and the first gear (18) and the second gear (19) are meshingly connected.

6. The rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle according to claim 1, characterized in that: The extrusion plate (21) and the second gear (19) are coaxially arranged, and the extrusion plate (21) is conically arranged.

7. The rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle according to claim 1, characterized in that: The extrusion plate (21) and the first filter plate (25) form a mutually rotatable mounting structure, and the end of the extrusion plate (21) is in contact with the side of the cleaning plate (22).

8. The rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle according to claim 1, characterized in that: Two cleaning plates (22) are symmetrically arranged about the axis of the first filter plate (25), and the cleaning plates (22) and the first filter plate (25) form a sliding installation structure.

9. The rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle according to claim 1, characterized in that: The cleaning plate (22) is engaged with the first filter plate (25) via a limiting block (24), and the cleaning plate (22) and the first filter plate (25) are arranged perpendicular to each other.

10. The rectangular negative pressure sewage suction tank pipeline robot for a sewage suction vehicle according to claim 1, characterized in that: The sealing plate (28) and the sewage suction tank body (1) form a sliding installation structure, and the sealing plate (28) is symmetrically arranged with respect to the axis of the sewage suction tank body (1).

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