Suction-type sewer scavenger provided with self-purification device and use method of suction-type sewer scavenger

Abstract

The invention discloses a sewage suction truck provided with a self-purification device and a using method thereof.The sewage suction truck comprises a carriage shell, a chemical treatment box, a sewage pipe, a first gear, a triangular plate, a stirring mechanism, an adding mechanism, a liquid discharging mechanism and a separating mechanism, the stirring mechanism drives stirring blades to conduct circular motion through the triangular plate and a rotating shaft, and uniform stirring of sewage is achieved; the adding mechanism automatically and quantitatively adds a flocculating agent according to the liquid level of sewage, accurate adding of the flocculating agent is ensured, meanwhile, the stability of the treatment effect is improved, the liquid discharging mechanism achieves automatic discharging of the sewage through an L-shaped pipe and a cylindrical shell according to the siphon principle, the separation mechanism achieves solid-liquid separation of the sewage through a screw rod and separation holes, and the sewage treatment efficiency is improved. The use method comprises the steps of sewage stirring, flocculant adding, liquid discharging and solid-liquid separation, manual intervention is reduced, the maintenance cost is reduced, and the sewage purification effect and the resource recycling rate are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage suction trucks provided with a self-purification device, and in particular to a sewage suction truck provided with a self-purification device and a use method thereof. Background Art

[0002] With the rapid development of my country's economic construction and the advancement of urbanization, the discharge of domestic sewage in urban areas has increased the burden on sewage treatment plants, which can easily cause blockage of sewage pipes and cause sewage to overflow everywhere, affecting the urban sanitary environment. In order to solve this objective situation, vehicles with purification devices are often used to separate and purify dirt and sewage. Existing sewage suction vehicles have many problems in filtration, purification, self-cleaning and resource recovery, which need further improvement and optimization. Therefore, the development of a sewage suction vehicle with a self-purification function can effectively solve the above problems, improve work efficiency, reduce maintenance costs, and reduce environmental pollution, which has important practical significance and application value.

[0003] The existing Chinese patent with publication number CN111807568B includes a carriage shell, a solid waste separator and a solid-liquid separator are installed inside the carriage shell, a chemical treatment tank is installed inside the carriage shell at the rear of the solid waste separator and the solid-liquid separator, a first storage box and a second storage box are arranged inside the carriage shell in front of the solid waste separator and the solid-liquid separator, a hydraulic device is arranged on the first storage box and the second storage box, a plurality of rotating rollers are symmetrically arranged inside the first storage box and the second storage box, a forming box is installed inside the first storage box and the second storage box at the upper end of the rotating roller, an opening and closing bottom plate is arranged inside the two forming boxes, a fixing rod is arranged inside the two forming boxes at the front side of the opening and closing bottom plate, and a fixing spring is arranged on the two fixing rods.

[0004] When the above device is in use, by arranging a forming box body in the first storage box and the second storage box, it is convenient to contain the residue; by arranging a hydraulic device, it is convenient to compress the residue into blocks; by arranging an opening and closing bottom plate and a fixing rod, the block residue can be quickly removed from the forming box body. However, in actual use, since there are many small particles of suspended matter in the sewage, it is impossible to subsequently separate the small particles of suspended matter into solid and liquid, which affects the effect of sewage purification treatment. Therefore, it is difficult to aggregate the small particles of suspended matter in the sewage.

[0005] For this reason, we propose a sewage suction truck provided with a self-purification device and a method for using the same. Summary of the invention

[0006] The object of the present invention is to provide a sewage suction truck equipped with a self-purification device and a method of using the same, which has the advantage of aggregating small suspended particles in sewage and solves the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sewage suction truck provided with a self-purification device and a method for using the same, comprising a carriage shell driven to move by the sewage suction truck, the inner wall of one end of the carriage shell being fixedly connected to a chemical treatment box through an external bracket, a sewage pipe for extracting external sewage into the chemical treatment box being penetrated and fixedly connected to one side of the chemical treatment box near the end, and a first gear being fixedly connected to the end of the chemical treatment box through an external bracket, a triangular plate driven to rotate by a power mechanism being penetrated and fixedly connected to the first gear, and a stirring mechanism for stirring the sewage inside the chemical treatment box being provided on the triangular plate; The stirring mechanism includes a triangular plate with three corners all penetrated by rotating shafts connected to the sewage in a fixed axis, the bottom ends of the three rotating shafts are coaxially fixedly connected with stirring blades for stirring the sewage, and the end of each rotating shaft is coaxially fixedly connected with a second gear meshing with the first gear. The triangular plate is provided with an adding mechanism for adding flocculant to the sewage.

[0008] Preferably, the three corners of the triangular plate are fixedly connected to piston cylinders via external brackets, and an inlet pipe is penetrated and fixedly connected to the outer contour of each piston cylinder near the end, and a cavity for storing flocculants is opened on the triangular plate, and each end of the inlet pipe away from the piston cylinder is penetrated to the inner wall of the cavity and fixedly connected.

[0009] Preferably, the adding mechanism includes a drainage tube that is penetrated and connected to the corresponding position of the piston cylinder on the triangular plate for lifting and movement, a piston plate for extracting and discharging the flocculant inside the cavity is fixedly connected to the outer contour of the end of each drainage tube, and the piston plate is in contact with the inner wall of the piston cylinder and is connected for lifting and movement, a moving block is fixedly connected to the bottom end of each drainage tube, each of the moving blocks is penetrated and movably connected by the rotating shaft on the adjacent side, and a spring is fixedly connected to the end of each moving block close to the rotating shaft and the opposite surface of the triangular plate for guiding the drainage tube to reset, and a floating block is fixedly connected to the bottom of each moving block for driving the drainage tube to move up and down according to the liquid level.

[0010] Preferably, the inner wall of each of the liquid inlet pipes near one end of the piston cylinder is fixedly connected with a one-way liquid inlet valve for quantitatively extracting the flocculant inside the cavity, the inner wall of each of the liquid discharge pipes near the end is fixedly connected with a one-way liquid discharge valve for quantitatively discharging the flocculant inside the piston cylinder, and the outer contour of each of the liquid discharge pipes near one end of the moving block is provided with a plurality of evenly arranged liquid outlet holes.

[0011] Preferably, one end of the inner wall of the carriage shell away from the chemical treatment box is fixedly connected to an arc-shaped shell through an external bracket, a separation cylinder is fixedly connected to the arc surface of the arc-shaped shell, and one end of the separation cylinder away from the arc-shaped shell is penetrated and fixedly connected to a connecting box, and the chemical treatment box is provided with a drainage mechanism for centrally discharging the sewage mixed with the flocculant into the inside of the connecting box.

[0012] Preferably, the drainage mechanism comprises an L-shaped tube penetrating through and fixedly connected to the bottom end of the chemical treatment box, and the inner wall of the chemical treatment box is fixedly connected to a cylindrical shell sleeved on the outer contour of the L-shaped tube through an external bracket.

[0013] Preferably, the separation cylinder is provided with a separation mechanism for solid-liquid separation of sewage inside the connection box, the separation mechanism includes an inner wall of the separation cylinder that is penetrated and fixedly rotatably connected to a spiral rod for quantitatively moving the sewage inside the connection box, and a plurality of evenly arranged separation holes are opened on the outer contour of the bottom side of the separation cylinder away from the connection box, and the bottom of the arc-shaped shell is penetrated and fixedly connected to a drain pipe for discharging the separated water source.

[0014] Preferably, the second conical tooth on the outer contour of the chemical treatment box away from the separation cylinder side is driven by an external bracket to rotate the spiral rod to move the sewage, and the end of the spiral rod away from the separation cylinder is coaxially fixed with the first conical tooth for meshing transmission with the second conical tooth, the end of the second conical tooth is coaxially fixed with the first pulley, and the top of the triangular plate is coaxially fixed with the second pulley at a position corresponding to the first pulley, and the second pulley and the first pulley The outer contour is sleeved with a transmission belt that drives the second conical tooth to rotate on a fixed axis.

[0015] A method for using a sewage suction truck comprises the following steps: S1. Stirring sewage: firstly, the sewage is pumped to the inner wall of the chemical treatment tank through the sewage pipe, and the triangular plate is driven by the motor to rotate with a fixed axis, so that the triangular plate drives the stirring blade to perform a circular motion on the inner wall of the chemical treatment tank, and the stirring blade is meshed with the first gear for transmission, so that the stirring blade can drive the stirring blade to rotate and uniformly stir the sewage inside the chemical treatment tank, so as to facilitate the subsequent uniform mixing of the sewage and the flocculant; S2. Adding flocculants: As the liquid level of the sewage in the chemical treatment tank gradually rises, the floating block can push the piston plate to move toward the end of the piston cylinder, so that the discharge pipe can quantitatively add the flocculant in the piston cylinder to the inside of the chemical treatment tank according to the increase in the water level. The flocculant will make the surface of the particles in the sewage have the same electrical properties, making it easier for them to contact each other and form larger flocs, so as to facilitate the subsequent solid-liquid separation of sewage; S3, drainage operation: when the water level inside the chemical treatment tank is higher than the end of the L-shaped pipe, the sewage inside the chemical treatment tank is discharged to the inside of the connection box through the L-shaped pipe, so that the air pressure inside the chemical treatment tank gradually increases, and according to the siphon principle, the external atmospheric pressure will push more sewage into the L-shaped pipe until the sewage inside the chemical treatment tank is completely discharged; S4, solid-liquid separation operation: along with the fixed-axis rotation of the triangular plate, the transmission belt can drive the second conical tooth to rotate synchronously, and the second conical tooth and the first conical tooth are meshed and transmitted, so that the spiral rod rotates to quantitatively transfer the sewage inside the connection box, and the separation hole opened on the separation cylinder can separate and discharge the treated water source, thereby improving the effect of sewage purification and discharge.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the linkage of the triangular plate and the rotating shaft, efficient and uniform stirring of the sewage inside the chemical treatment box is achieved. The fixed-axis rotation of the triangular plate drives the stirring blade to perform circular motion on the inner wall of the chemical treatment box. At the same time, the meshing transmission with the first gear ensures the stable rotation of the stirring blade, improves the stirring efficiency, and ensures the subsequent sufficient mixing of sewage and flocculant, so that the flocculant can be evenly distributed in the entire sewage, thereby improving the flocculation effect and sewage purification effect, accelerating the aggregation of small particles of suspended matter in the sewage, and creating favorable conditions for the subsequent solid-liquid separation.

[0017] 2. Through the linkage of the float and the piston plate, the flocculant is automatically added quantitatively according to the sewage level. When the sewage level rises, the float pushes the piston plate to move, so that the discharge pipe adds the flocculant quantitatively to the chemical treatment tank. The setting of the one-way inlet valve and the one-way discharge valve ensures the accurate addition of the flocculant and avoids the situation of excessive or insufficient addition. It not only improves the use efficiency of the flocculant, but also reduces the error of manual operation, reduces the operating cost, and ensures the stability of the treatment effect.

[0018] 3. Through the combination of L-shaped tube and cylindrical shell, the automatic discharge of sewage inside the chemical treatment box is realized. When the sewage level is higher than the end of the L-shaped tube, according to the siphon principle, the sewage can be automatically discharged into the connection box, reducing manual intervention and improving the discharge efficiency, ensuring that the sewage inside the chemical treatment box can be discharged quickly and thoroughly, providing convenience for subsequent treatment steps. At the same time, the use of siphon effect also reduces the energy consumption of equipment and improves the energy utilization efficiency of the entire system.

[0019] 4. Through the cooperation of the spiral rod and the separation hole, efficient solid-liquid separation of the sewage inside the connection box is achieved. The rotation of the spiral rod quantitatively moves the sewage, so that the flocculants in the sewage gradually settle in the separation cylinder, and the clean water is discharged through the separation hole, which improves the efficiency of solid-liquid separation and ensures that the clean water after separation can meet the emission standards, reducing pollution to the environment. At the same time, the separated flocculent solid waste can be discharged through one end of the separation cylinder for easy treatment, further improving the treatment efficiency and resource recovery rate of the entire system.

[0020] The coordinated use of the above-mentioned structure solves the problem that in actual use of the existing device, due to the presence of a large number of small suspended particles in the sewage, the small suspended particles cannot be subsequently separated into solid and liquid, thereby affecting the effect of sewage purification treatment, and it is difficult to aggregate the small suspended particles in the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a cross-sectional schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the chemical treatment box of the present invention; Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the separation cylinder of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the part where the triangle plate of the present invention is located; Figure 6 For the present invention Figure 5 Schematic diagram of the structure at A in the middle; Figure 7 It is a schematic cross-sectional view of the three-dimensional structure of the part where the triangle plate of the present invention is located; Figure 8 It is a cross-sectional schematic diagram of the three-dimensional structure of the piston cylinder of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the structure at B in the middle; Fig.10 For the present invention Figure 8 Schematic diagram of the structure at C in the middle; Fig.11 It is a cross-sectional schematic diagram of the three-dimensional structure of the cylindrical shell of the present invention; Fig.12 It is a schematic diagram of the process of using the sewage suction vehicle of the present invention.

[0022] In the figure: 1. carriage shell; 2. chemical treatment box; 3. sewage pipe; 4. first gear; 5. triangular plate; 501. cavity; 6. rotating shaft; 7. stirring blade; 8. second gear; 9. piston cylinder; 10. liquid inlet pipe; 101. one-way liquid inlet valve; 11. piston plate; 12. liquid discharge pipe; 121. one-way liquid discharge valve; 122. liquid outlet hole; 13. moving block; 14. spring; 15. floating block; 16. arc-shaped shell; 17. separation cylinder; 171. separation hole; 18. connecting box; 19. L-shaped tube; 20. cylindrical shell; 21. spiral rod; 22. first conical teeth; 23. second conical teeth; 24. drain pipe; 25. first pulley; 26. second pulley; 27. transmission belt. DETAILED DESCRIPTION

[0023] 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.

[0024] Embodiment 1:

[0025] See also Figures 1 to 12 The present invention provides a technical solution: a sewage suction truck provided with a self-purification device and a method for using the same, comprising a carriage shell 1 driven to move by the sewage suction truck, the inner wall of one end of the carriage shell 1 being fixedly connected to a chemical treatment box 2 through an external bracket, a sewage pipe 3 for extracting external sewage into the chemical treatment box 2 being penetrated and fixedly connected to one side of the chemical treatment box 2 near the end, and a first gear 4 being fixedly connected to the end of the chemical treatment box 2 through an external bracket, a triangular plate 5 driven to rotate by a power mechanism being penetrated and fixedly connected to the first gear 4, and a stirring mechanism for stirring the sewage inside the chemical treatment box 2 being provided on the triangular plate 5; The stirring mechanism includes a triangular plate 5, the three corner positions of which are penetrated and fixedly connected with a rotating shaft 6, the bottom ends of the three rotating shafts 6 are coaxially fixedly connected with stirring blades 7 for stirring the sewage, and the end of each rotating shaft 6 is coaxially fixedly connected with a second gear 8 that meshes with the first gear 4. The triangular plate 5 is provided with an adding mechanism for adding flocculant to the sewage.

[0026] When in use, by setting the carriage shell 1, the carriage shell 1 is driven by the sewage suction truck to move, and the chemical treatment box 2 is fixedly supported on the inner wall of the carriage shell 1 through the chemical treatment box 2 set on the carriage shell 1, and the sewage pipe 3 is set on the chemical treatment box 2, and the sewage pipe 3 is connected with the inner wall of the chemical treatment box 2, so that the sewage pipe 3 can extract sewage to the inner wall of the chemical treatment box 2, and the first gear 4 is set on the chemical treatment box 2, and the first gear 4 is fixedly supported on the chemical treatment box 2, and the triangular plate 5 is set on the first gear 4, and the triangular plate 5 is driven to rotate by the motor, so that the motor can drive the triangular plate 5 to rotate on the first gear 4, and the rotating shaft 6 is set on the triangular plate 5, and the rotating shaft 6 is rotatably supported on the triangular plate 5, so that the triangular plate 5 can drive The rotating shaft 6 performs circular motion on the inner wall of the chemical treatment box 2, and the second gear 8 is arranged on the rotating shaft 6, and the second gear 8 is meshed with the first gear 4 for transmission, accompanied by the triangular plate 5 driving the rotating shaft 6 to perform circular motion, so that the second gear 8 can drive the rotating shaft 6 to perform fixed-axis rotation on the triangular plate 5 under the action of the first gear 4, and the stirring blade 7 arranged on the rotating shaft 6 can make the rotating shaft 6 drive the stirring blade 7 to perform fixed-axis rotation synchronously, so that the stirring blade 7 can evenly stir the sewage inside the chemical treatment box 2, and the adding mechanism arranged on the triangular plate 5, and then the adding mechanism can quantitatively add flocculant according to the increase of the water level inside the chemical treatment box 2, and the sewage inside the chemical treatment box 2 is stirred by the stirring blade 7, thereby further improving the mixing effect of the sewage and the coagulant.

[0027] Embodiment 2:

[0028] On the basis of the first embodiment, further: The three corners of the triangular plate 5 are fixedly connected to piston cylinders 9 through external brackets, and the outer contour of one side of each piston cylinder 9 close to the end is penetrated and fixedly connected with a liquid inlet pipe 10, and a cavity 501 for storing flocculants is opened on the triangular plate 5, and one end of each liquid inlet pipe 10 away from the piston cylinder 9 is penetrated to the inner wall of the cavity 501 and fixedly connected.

[0029] When in use, the piston cylinder 9 arranged on the triangular plate 5 is used to fix the piston cylinder 9 on the triangular plate 5, and the cavity 501 opened on the triangular plate 5 first stores the flocculant inside the cavity 501, and the liquid inlet pipe 10 arranged on the piston cylinder 9 is used to connect the piston cylinder 9 with the inner wall of the cavity 501, so that the flocculant inside the cavity 501 can be quantitatively added to the sewage later.

[0030] Embodiment three:

[0031] On the basis of the second embodiment, further: The adding mechanism includes a drain pipe 12 that is penetrated and connected to the corresponding position of the piston cylinder 9 on the triangular plate 5, and the piston plate 11 for extracting and discharging the flocculant inside the cavity 501 is fixedly connected to the outer contour of the end of each drain pipe 12, and the piston plate 11 is in contact with the inner wall of the piston cylinder 9 and connected to be lifted and moved. The bottom end of each drain pipe 12 is fixedly connected to a moving block 13, and each moving block 13 is penetrated and movably connected by the rotating shaft 6 on the adjacent side. The end of each moving block 13 close to the rotating shaft 6 and the opposite surface of the triangular plate 5 are fixedly connected to a spring 14 for guiding the drain pipe 12 to reset and move, and the bottom of each moving block 13 is fixedly connected to a floating block 15 for driving the drain pipe 12 to move up and down according to the liquid level.

[0032] The inner wall of each of the liquid inlet pipes 10 near the piston cylinder 9 is fixedly connected with a one-way liquid inlet valve 101 for quantitatively extracting the flocculant inside the cavity 501, and the inner wall of each of the liquid discharge pipes 12 near the end is fixedly connected with a one-way liquid discharge valve 121 for quantitatively discharging the flocculant inside the piston cylinder 9, and the outer contour of each of the liquid discharge pipes 12 near the moving block 13 is provided with a plurality of evenly arranged liquid outlet holes 122.

[0033] When in use, the drain pipe 12 arranged on the triangular plate 5 is used to make the drain pipe 12 movable and connected on the triangular plate 5 for lifting and lowering. The piston plate 11 arranged on the drain pipe 12 is used to fix and support the piston plate 11 on the end of the drain pipe 12. The moving block 13 arranged on the drain pipe 12 is fixed and supported on the drain pipe 12. The spring 14 arranged on the moving block 13 and the moving block 13 is penetrated and movably supported by the rotating shaft 6 enable the spring 14 to support the moving block 13 in position, so that the spring 14 can subsequently drive the drain pipe 12 to reset and move.

[0034] By means of the floating block 15 arranged on the moving block 13, and the buoyancy of the floating block 15 is greater than the elastic force of the spring 14, as the water level inside the chemical treatment box 2 gradually rises, the floating block 15 can push the moving block 13 to move in an upward vertical direction, and at the same time, the spring 14 is squeezed and contracted under the action of the moving block 13, and the discharge pipe 12 can synchronously push the piston plate 11 to move toward the end of the piston cylinder 9 along with the moving block 13, so that the internal air pressure near the end of the piston cylinder 9 is in a positive pressure state, and the one-way liquid inlet valve 101 arranged on the liquid inlet pipe 10 and the one-way liquid discharge valve 12 arranged on the discharge pipe 12 are in a positive pressure state. 1. At this time, the one-way liquid inlet valve 101 is in a closed state, the one-way liquid discharge valve 121 is in an open state, and the liquid outlet hole 122 is provided on the liquid discharge pipe 12, so that the liquid discharge pipe 12 can add the flocculant in the piston cylinder 9 to the sewage in the chemical treatment tank 2 through the liquid outlet hole 122, so that the liquid discharge pipe 12 can quantitatively discharge the flocculant as the water level in the chemical treatment tank 2 rises, and the triangular plate 5 can drive the liquid discharge pipe 12 to synchronously perform a circular motion on the inner wall of the chemical treatment tank 2, so that the liquid discharge pipe 12 can evenly add the flocculant to the sewage, thereby improving the mixing effect of the flocculant and the sewage.

[0035] The above-mentioned flocculants will make the surface of the particles have the same electrical properties, making it easier for them to contact each other and form flocs. When the formed flocs are large enough, the particles can be settled into the wastewater, thereby achieving the purpose of purifying the water quality, which facilitates the subsequent solid-liquid separation.

[0036] When the water level inside the chemical treatment box 2 drops, the above-mentioned structure will be reset synchronously in the opposite direction, and the moving block 13 can pull the discharge pipe 12 to be reset synchronously in the downward vertical direction under the elastic force of the spring 14, so that the liquid inlet pipe 10 can quantitatively extract the flocculant inside the cavity 501 into the interior of the piston cylinder 9.

[0037] Embodiment 4:

[0038] On the basis of the third embodiment, further: The end of the inner wall of the carriage shell 1 away from the chemical treatment box 2 is fixedly connected to an arc-shaped shell 16 through an external bracket, and a separation cylinder 17 is fixedly connected to the arc surface of the arc-shaped shell 16. The end of the separation cylinder 17 away from the arc-shaped shell 16 is penetrated and fixedly connected to a connection box 18. The chemical treatment box 2 is provided with a drainage mechanism for centrally discharging the sewage mixed with the flocculant into the connection box 18.

[0039] The drainage mechanism includes a bottom end of a chemical treatment box 2 through which an L-shaped tube 19 is passed and fixedly connected, and an inner wall of the chemical treatment box 2 is fixedly connected to a cylindrical shell 20 sleeved on the outer contour of the L-shaped tube 19 through an external bracket.

[0040] When in use, the arc-shaped shell 16 is provided on the car body shell 1, and the separation cylinder 17 is provided on the arc-shaped shell 16, so that the arc-shaped shell 16 can fix and support the separation cylinder 17 on the inner wall of the car body shell 1, and the connection box 18 is provided on the separation cylinder 17, so that the connection box 18 is connected with the inner wall of the separation cylinder 17, and the L-shaped tube 19 provided on the chemical treatment tank 2 can make the L-shaped tube 19 connect the connection box 18 and the inner wall of the chemical treatment tank 2, and the columnar shell 20 provided on the chemical treatment tank 2 is fixedly supported on the inner wall of the chemical treatment tank 2, and the opening at the bottom end of the columnar shell 20 is out of contact with the bottom of the chemical treatment tank 2, and as the water level of the mixed sewage in the chemical treatment tank 2 gradually increases, The mixed sewage in the chemical treatment tank 2 rises, and at the same time, the mixed sewage in the chemical treatment tank 2 can enter the interior of the cylindrical shell 20 and rise synchronously, and the cylindrical shell 20 is sleeved on the L-shaped tube 19. When the mixed sewage in the cylindrical shell 20 rises to the limit position, the mixed sewage in the cylindrical shell 20 forms a seal on the end of the L-shaped tube 19, and under the action of gravity, the mixed sewage is discharged through the L-shaped tube 19 and the air inside the L-shaped tube 19 is discharged. At this time, the air pressure inside the chemical treatment tank 2 gradually increases until the L-shaped tube 19 completely discharges the mixed sewage inside the chemical treatment tank 2 to the interior of the connecting box 18. When the liquid in the chemical treatment tank 2 is sucked dry, the liquid in the cylindrical shell 20 will flow back due to gravity, and the siphon effect ends.

[0041] Embodiment five:

[0042] On the basis of the fourth embodiment, further: The separation cylinder 17 is provided with a separation mechanism for solid-liquid separation of the sewage inside the connection box 18, and the separation mechanism includes a spiral rod 21 that is penetrated through the inner wall of the separation cylinder 17 and is rotatably connected to it for quantitatively moving the sewage inside the connection box 18, and a plurality of evenly arranged separation holes 171 are opened on the bottom outer contour of the end of the separation cylinder 17 away from the connection box 18, and a drainage pipe 24 that is penetrated through the bottom of the arc-shaped shell 16 and is fixedly connected to it for discharging the separated water source.

[0043] The second conical tooth 23 on the outer contour of the chemical treatment box 2 on the side away from the separation cylinder 17 is driven by the external bracket to rotate the screw rod 21 to move the sewage, and the end of the screw rod 21 away from the separation cylinder 17 is coaxially fixedly connected with the first conical tooth 22 for meshing transmission with the second conical tooth 23, the end of the second conical tooth 23 is coaxially fixedly connected with the first pulley 25, and the top of the triangular plate 5 is coaxially fixedly connected with the second pulley 26 at a position corresponding to the first pulley 25, and the second pulley 26 and the first pulley 25 The outer contour is sleeved with a transmission belt 27 that drives the second conical tooth 23 to rotate on a fixed axis.

[0044] When in use, through the spiral rod 21 arranged on the separation cylinder 17, the spiral rod 21 is rotatably connected to the inner wall of the separation cylinder 17, and the connecting box 18 is communicated with the inner wall of the separation cylinder 17, so that the mixed sewage in the connecting box 18 enters the interior of the separation cylinder 17, and the spiral blades on the spiral rod 21 fit with the inner wall of the separation cylinder 17, so that the spiral blades on the spiral rod 21 can quantitatively hold the mixed sewage in the connecting box 18, through the second conical teeth 23 arranged on the car body shell 1, and the first conical teeth 22 arranged on the spiral rod 21, the first conical teeth 22 and the second conical teeth 23 are meshed and transmitted, through the second pulley 26 arranged on the triangular plate 5, and the first pulley 25 arranged on the second conical teeth 23, the second pulley 26 and the first pulley 25 are coaxially fixedly connected with the triangular plate 5 and the second conical teeth 23 respectively, and the transmission belt 27 arranged on the first pulley 25 and the second pulley 26, the bansuzi and the triangular plate 5 drive the first pulley 26 and the second pulley 25 to be coaxially fixedly connected with the triangular plate 5 and the second conical teeth 23. The second pulley 26 rotates on a fixed axis, so that the first pulley 25 can drive the second conical tooth 23 to rotate on a fixed axis synchronously under the action of the transmission belt 27, so that the first conical tooth 22 can drive the spiral rod 21 to rotate under the action of the second conical tooth 23 to quantitatively collect and transfer the mixed sewage inside the connection box 18, and the separation hole 171 opened on the separation cylinder 17 enables the separation hole 171 to connect the separation cylinder 17 with the interior of the arc-shaped shell 16. When the spiral rod 21 has transported the mixed sewage to the position of the separation cylinder 17, the separation hole 171 can separate the mixed sewage into solid and liquid, and the separated water source can enter the inner wall of the arc-shaped shell 16. The drain pipe 24 set on the arc-shaped shell 16 can discharge the water source inside the arc-shaped shell 16. At the same time, the spiral rod 21 can transfer the separated flocculent solid waste and discharge it through the end of the separation cylinder 17 away from the connection box 18, thereby further improving the sewage purification effect.

[0045] Embodiment six:

[0046] On the basis of the fifth embodiment, further: A method for using a sewage suction truck comprises the following steps: S1. Stirring sewage: firstly, the sewage is pumped to the inner wall of the chemical treatment box 2 through the sewage pipe 3, and the triangular plate 5 is driven by the motor to rotate on a fixed axis, so that the triangular plate 5 drives the stirring blade 7 to perform a circular motion on the inner wall of the chemical treatment box 2, and the stirring blade 7 is meshed with the first gear 4 for transmission, so that the stirring blade 7 can drive the stirring blade 7 to rotate and uniformly stir the sewage inside the chemical treatment box 2, so as to facilitate the subsequent uniform mixing of the sewage and the flocculant; S2. Adding flocculant: As the liquid level of the sewage in the chemical treatment tank 2 gradually rises, the float 15 can push the piston plate 11 to move toward the end of the piston cylinder 9, so that the discharge pipe 12 can quantitatively add the flocculant in the piston cylinder 9 to the inside of the chemical treatment tank 2 according to the increase in the water level. The flocculant will make the surface of the particles in the sewage have the same electrical properties, making it easier for them to contact each other and form larger flocs, so as to facilitate the subsequent solid-liquid separation of the sewage; S3, drainage operation: when the water level inside the chemical treatment box 2 is higher than the end of the L-shaped tube 19, and the sewage inside the chemical treatment box 2 is discharged to the inside of the connection box 18 through the L-shaped tube 19, the air pressure inside the chemical treatment box 2 gradually increases, and the external atmospheric pressure will push more sewage into the L-shaped tube 19 according to the siphon principle until the sewage inside the chemical treatment box 2 is completely discharged; S4, solid-liquid separation operation: along with the fixed-axis rotation of the triangular plate 5, the transmission belt 27 can drive the second conical teeth 23 to rotate synchronously, and the second conical teeth 23 are meshed with the first conical teeth 22 for transmission, so that the spiral rod 21 rotates to quantitatively transfer the sewage inside the connecting box 18, and the separation hole 171 opened on the separation cylinder 17 can separate and discharge the treated water source, thereby improving the effect of sewage purification and discharge.

[0047] Furthermore, the existing device can aggregate small suspended particles in sewage during actual use, thereby improving the sewage purification effect, being easy to use, and being better than traditional products.

[0048] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage suction truck equipped with a self-purification device, characterized in that: The invention comprises a carriage shell (1) driven to move by a sewage suction truck, wherein the inner wall of one end of the carriage shell (1) is fixedly connected to a chemical treatment box (2) via an external bracket, a sewage pipe (3) for extracting external sewage into the chemical treatment box (2) is penetrated and fixedly connected to one side of the chemical treatment box (2) near the end, and a first gear (4) is fixedly connected to the end of the chemical treatment box (2) via an external bracket, and a triangular plate (5) driven to rotate by a power mechanism is penetrated and fixedly connected to the first gear (4), and a stirring mechanism for stirring the sewage inside the chemical treatment box (2) is provided on the triangular plate (5); The stirring mechanism comprises a triangular plate (5) having three corners through which rotating shafts (6) are connected in a fixed rotational manner, the bottom ends of the three rotating shafts (6) are coaxially connected to stirring blades (7) for stirring the sewage, and the end of each rotating shaft (6) is coaxially connected to a second gear (8) that meshes with the first gear (4) for transmission, and the triangular plate (5) is provided with an adding mechanism for adding flocculant to the sewage.

2. A sewage suction truck equipped with a self-purification device according to claim 1, characterized in that: The three corners of the triangular plate (5) are fixedly connected to piston cylinders (9) via external brackets, and a liquid inlet pipe (10) is penetrated and fixedly connected to the outer contour of one side of each piston cylinder (9) near the end, and a cavity (501) for storing flocculants is opened on the triangular plate (5), and the end of each liquid inlet pipe (10) away from the piston cylinder (9) is penetrated to the inner wall of the cavity (501) and fixedly connected.

3. A sewage suction truck equipped with a self-purification device according to claim 2, characterized in that: The adding mechanism comprises a drain pipe (12) which is penetrated and connected to the position corresponding to the piston cylinder (9) on the triangular plate (5), and is lifted and moved. A piston plate (11) for extracting and discharging the flocculant inside the cavity (501) is fixedly connected to the outer contour of the end of each drain pipe (12), and the piston plate (11) is in contact with the inner wall of the piston cylinder (9) and is lifted and moved. A moving block (13) is fixedly connected to the bottom end of each drain pipe (12), and each moving block (13) is penetrated and movably connected by the rotating shaft (6) on the adjacent side. A spring (14) for guiding the drain pipe (12) to reset is fixedly connected to the end of each moving block (13) close to the rotating shaft (6) and on the opposite surface of the triangular plate (5), and a floating block (15) for driving the drain pipe (12) to move up and down according to the liquid level is fixedly connected to the bottom of each moving block (13).

4. A sewage suction truck equipped with a self-purification device according to claim 3, characterized in that: The inner wall of each of the liquid inlet pipes (10) close to one end of the piston cylinder (9) is fixedly connected to a one-way liquid inlet valve (101) for quantitatively extracting the flocculant from the cavity (501); the inner wall of each of the liquid discharge pipes (12) close to the end is fixedly connected to a one-way liquid discharge valve (121) for quantitatively discharging the flocculant from the piston cylinder (9); and the outer contour of each of the liquid discharge pipes (12) close to one end of the moving block (13) is provided with a plurality of evenly arranged liquid outlet holes (122).

5. A sewage suction truck equipped with a self-purification device according to claim 4, characterized in that: An end of the inner wall of the carriage shell (1) away from the chemical treatment box (2) is fixedly connected to an arc-shaped shell (16) via an external bracket, a separation cylinder (17) is fixedly connected within the arc surface of the arc-shaped shell (16), and an end of the separation cylinder (17) away from the arc-shaped shell (16) is penetrated and fixedly connected to a connection box (18), and a drainage mechanism is provided on the chemical treatment box (2) for centrally discharging sewage mixed with a flocculant into the connection box (18).

6. A sewage suction truck equipped with a self-purification device according to claim 5, characterized in that: The liquid discharge mechanism comprises a chemical treatment box (2) having an L-shaped tube (19) passing through and fixedly connected to the bottom end thereof, and an inner wall of the chemical treatment box (2) being fixedly connected to a cylindrical shell (20) sleeved on the outer contour of the L-shaped tube (19) via an external bracket.

7. A sewage suction truck equipped with a self-purification device according to claim 6, characterized in that: The separation cylinder (17) is provided with a separation mechanism for performing solid-liquid separation on the sewage inside the connection box (18), the separation mechanism comprising a spiral rod (21) which is penetrated through the inner wall of the separation cylinder (17) and is rotatably connected thereto for quantitatively transferring the sewage inside the connection box (18), and a plurality of evenly arranged separation holes (171) are formed on the outer contour of the bottom side of the separation cylinder (17) at one end away from the connection box (18), and a drainage pipe (24) which is penetrated through and fixedly connected to the bottom of the arc-shaped shell (16) for discharging the separated water source.

8. The sewage suction truck equipped with a self-purification device according to claim 7, characterized in that: A second conical tooth (23) is provided on the outer contour of the chemical treatment box (2) at a side away from the separation cylinder (17) and is driven by an external bracket to rotate the screw rod (21) to transfer sewage, and one end of the screw rod (21) away from the separation cylinder (17) is coaxially fixedly connected to a first conical tooth (22) for meshing transmission with the second conical tooth (23), and the end of the second conical tooth (23) is coaxially fixedly connected to a first belt pulley (25), and a second belt pulley (26) is coaxially fixedly connected to the top of the triangle plate (5) at a position corresponding to the first belt pulley (25), and a transmission belt (27) is sleeved in a slide groove on the outer contour of the second belt pulley (26) and the first belt pulley (25) and drives the second conical tooth (23) to rotate on a fixed axis.

9. A method for using a sewage suction truck, applied to a sewage suction truck provided with a self-purification device as claimed in any one of claims 1 to 8, comprising the following steps: S1. Stirring sewage: first, the sewage is pumped to the inner wall of the chemical treatment box (2) through the sewage pipe (3), and the triangular plate (5) is driven by the motor to rotate on a fixed axis, so that the triangular plate (5) drives the stirring blade (7) to perform a circular motion on the inner wall of the chemical treatment box (2), and the stirring blade (7) is meshed with the first gear (4) for transmission, so that the stirring blade (7) can drive the stirring blade (7) to rotate and uniformly stir the sewage inside the chemical treatment box (2), so as to facilitate the subsequent uniform mixing of the sewage and the flocculant; S2. Adding flocculants: As the liquid level of the sewage in the chemical treatment tank (2) gradually rises, the float (15) can push the piston plate (11) to move toward the end of the piston cylinder (9), so that the discharge pipe (12) can quantitatively add the flocculant in the piston cylinder (9) to the inside of the chemical treatment tank (2) according to the rise in the water level. The flocculants will make the surface of the particles in the sewage have the same electrical properties, making it easier for them to contact each other and form larger flocs, so as to facilitate the subsequent solid-liquid separation of the sewage; S3, drainage operation: when the water level inside the chemical treatment box (2) is higher than the end of the L-shaped pipe (19), the sewage inside the chemical treatment box (2) is discharged into the interior of the connection box (18) through the L-shaped pipe (19), so that the air pressure inside the chemical treatment box (2) gradually increases. According to the siphon principle, the external atmospheric pressure will push more sewage into the L-shaped pipe (19) until the sewage inside the chemical treatment box (2) is completely discharged; S4, solid-liquid separation operation: As the triangular plate (5) rotates along a fixed axis, the transmission belt (27) can drive the second conical teeth (23) to rotate along a fixed axis synchronously, and the second conical teeth (23) and the first conical teeth (22) are meshed and driven, so that the spiral rod (21) rotates to quantitatively transfer the sewage inside the connection box (18), and the separation hole (171) provided on the separation cylinder (17) can separate and discharge the treated water source, thereby improving the effect of sewage purification and discharge.

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