A car washing circulating water sludge dewatering device and a method of using the same

Abstract

The application provides a car washing circulating water sludge dewatering device and a use method thereof, wherein the car washing circulating water sludge dewatering device comprises a multistage sedimentation tank, a sand drying disc, a sand discharge pipe, a water discharge pipe and a water return pipe, the multistage sedimentation tank comprises first to Nth treatment boxes, a sludge and sand liquid level instrument, a frame, an air tank and air outlet nozzles, the first to Nth treatment boxes are sequentially communicated, the sludge and sand liquid level instrument and the frame are arranged in each of the first to Nth treatment boxes, an air flow channel is arranged in each of the frames, the lower surface of the frame is provided with the air outlet nozzle, the air outlet nozzle is communicated with the air flow channel, the air flow channel in the frame is further communicated with the air tank, the air tank is arranged on the outer side wall of the treatment box, the multistage sedimentation tank effectively improves the sludge sedimentation efficiency through a multistage sedimentation structure, ensures that the sludge in the wastewater is fully deposited at the bottom of the tank, and the setting of the sludge and sand liquid level instrument realizes accurate monitoring of the sludge deposition height and provides a reliable basis for automatic sand discharge.

Description

A car wash circulating water sludge dewatering device and its usage method Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a car wash circulating water sludge dewatering device and its usage method. Background Technology

[0002] In the car wash industry, the treatment of wastewater and sludge is crucial. Currently, traditional car wash wastewater treatment relies heavily on simple sedimentation tanks for preliminary treatment, which can only remove large particles of impurities. For the generated sludge, car washes typically lack dedicated sludge treatment facilities, simply discharging the high-moisture sludge into the municipal sewer system via their own drainage systems, relying on municipal dredging vehicles for periodic removal. Specifically, car washes often simply pile up the sludge or discharge it through drainage, only contacting dredging vehicles to remove it once a certain amount has accumulated. This traditional treatment model is prevalent in all types of car washes (regardless of size), most of which only have simple sedimentation tanks and drainage pipes inside the shop, directly discharging the treated wastewater and sludge outside.

[0003] However, this traditional treatment method has many drawbacks. On the one hand, because the sludge is simply piled up or directly discharged, the high water content of the sludge makes it prone to lingering in drainage pipes and other places for extended periods. Especially when drainage is poor, it is more likely to clog municipal pipe networks and interfere with the normal operation of the city's drainage system. On the other hand, the traditional method does not implement effective drying treatment for the sludge, failing to reduce the amount of sludge at the source. This results in a large volume and weight of sludge, leading to high costs for subsequent municipal dredging vehicles and increasing the difficulty and cost of subsequent sludge disposal.

[0004] In addition, the traditional treatment process mainly relies on manual contact with municipal sludge removal vehicles, lacking automated monitoring and equipment operation control mechanisms. It cannot automatically monitor key parameters such as sludge quantity and moisture content, nor can it automatically control equipment operation, resulting in low treatment efficiency and poor accuracy, relying more on manual experience and operation. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a car wash circulating water sludge dewatering device and its usage method.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A car wash circulating water sludge dewatering device includes:

[0008] A multi-stage sedimentation tank includes a first to Nth treatment tank, a sediment level gauge, a frame, an air tank, and an air outlet nozzle. The first to Nth treatment tanks are connected sequentially. The upper side wall of the first treatment tank has a sedimentation tank inlet. The first to Nth treatment tanks are respectively equipped with a sediment level gauge and a frame. The frame is located at the lower part of the treatment tank. Each frame is equipped with an airflow channel. An air outlet nozzle is provided on the lower surface of the frame and is connected to the airflow channel. The airflow channel in the frame is also connected to the air tank, which is located on the outer side wall of the treatment tank.

[0009] A settling and drying tray is located below the multi-stage sedimentation tank;

[0010] A sand discharge pipe, one end of which is connected to the bottom of the first to Nth treatment tanks, and the other end of which is connected to the top of the sedimentation and drying tray. A sand discharge solenoid valve is installed inside the sand discharge pipe.

[0011] A drain pipe, one end of which is connected to the bottom of the sedimentation and drying tray, and the other end of which is located in the water collection well;

[0012] The return water pipe has one end located inside the water collection well and the other end connected to the sedimentation tank inlet of the multi-stage sedimentation tank.

[0013] Optionally, the multi-stage sedimentation tank further includes at least one opening and closing component, the opening and closing component comprising:

[0014] Multiple rotating components, which are rotatably mounted on the frame;

[0015] Multiple sealing blocks are disposed on the rotating component.

[0016] A baffle plate is rotatably mounted on the frame, and the baffle plate is provided with anti-turbulence grooves, which are respectively adapted to the rotating component and the sealing block;

[0017] The baffle plate can be reversibly rotated from a horizontal state to a vertical state. In the horizontal state, the rotating component and the sealing block are embedded in the anti-turbulence groove.

[0018] Optionally, the multi-stage sedimentation tank further includes a propulsion component disposed within the frame 130, the propulsion component comprising:

[0019] Gear, a gear is sleeved on the pin of the blocking plate;

[0020] A rack, which meshes with the gear;

[0021] An electric push rod, which is connected to the rack and pinion drive.

[0022] Optionally, a gear is sleeved on the rotating component, and the gear sleeved on the rotating component meshes with the rack.

[0023] Optionally, the framework includes:

[0024] Two side plates are arranged opposite each other. The two ends of the rotating member pass through the interior of the two side plates and are respectively connected to the gears. The pins at both ends of the blocking plate pass through the interior of the two side plates and are respectively connected to the gears. Each side plate is provided with a rack.

[0025] A front side plate, which is connected to two side plates, and an electric push rod is provided inside the front side plate. The electric push rod is connected to a rack inside the two side plates through a connecting rod.

[0026] The rear side panel is connected to the two side panels.

[0027] Optionally, the actuating component further includes:

[0028] A telescopic sleeve rod is disposed inside the front side plate and connected to the connecting rod.

[0029] Optionally, the multi-stage sedimentation tank further includes limiting components, the number of which is equal to the number of baffles, and the limiting components include:

[0030] A slide groove is formed on the inner side of the side plate of the frame;

[0031] The pressing rod slides within the groove and is connected to the rack. The pressing rod moves with the rack and can press against the horizontally positioned blocking plate.

[0032] Optionally, the multi-stage sedimentation tank further includes a driving component, the driving component comprising:

[0033] A reciprocating screw is rotatably mounted inside a housing, which is fixed to the inner wall of the first processing box. One end of the housing along its length is connected to the gas tank via an air pipe, and the output shaft of the reciprocating screw extends out from the other end of the housing along its length.

[0034] The fan blade is located inside the first processing tank and opposite to the inlet of the sedimentation tank. The fan blade is connected to the output shaft of the reciprocating screw.

[0035] A piston is located inside the housing and is limited by a limiting strip inside the housing, allowing it to move along the length of the housing. The piston is screwed to the reciprocating screw.

[0036] Optionally, it also includes:

[0037] The multi-stage sedimentation tank is located inside the tank body;

[0038] A solar power generation device is installed on the top of the housing and provides power for the operation of the multi-stage sedimentation tank and the sedimentation drying tray.

[0039] The present invention also provides a method for using a car wash circulating water sludge dewatering device, comprising the following steps:

[0040] The wastewater from the car wash in the collection well is directed to a multi-stage sedimentation tank via a return water pipe. The wastewater passes through the first to Nth treatment tanks in the multi-stage sedimentation tank in sequence to settle the sludge in the wastewater to the bottom of the first to Nth treatment tanks respectively.

[0041] When the sludge level gauge in the first to Nth treatment tanks detects that the sludge in the first to Nth treatment tanks has reached the specified height, the solenoid valve on the sand discharge pipe is opened so that the sludge in the first to Nth treatment tanks can be discharged to the settling and drying tray through the sand pipe.

[0042] The settling and drying tray dewaters the sludge inside the settling and drying tray.

[0043] The separated water is led to the collection well through the drain pipe.

[0044] Compared with existing technologies, this technical solution has the following advantages:

[0045] 1. Source reduction

[0046] The car wash circulating water sludge dewatering device significantly reduces the volume and weight of car wash sludge by promptly discharging and drying it. This not only reduces the storage space required for sludge but also lowers subsequent transportation and treatment costs, achieving the goal of reducing sludge treatment volume at the source.

[0047] 2. Cost savings

[0048] This reduced the frequency with which car washes contacted municipal dredging vehicles, saving on sludge removal costs.

[0049] 3. Reduced energy costs

[0050] Equipped with a solar power generation device, the equipment is powered by solar energy, which reduces the energy consumption cost of equipment operation.

[0051] 4. Significant environmental benefits

[0052] This eliminated the problem of sludge becoming foul-smelling and polluting the environment after prolonged soaking, thus protecting the surrounding ecosystem. It also mitigated the risk of sludge clogging municipal pipe networks and ensured the smooth operation of the city's drainage system.

[0053] 5. Water resource recycling

[0054] It has enabled the recycling of water resources, improved the efficiency of water resource utilization, and contributed to the construction of water-saving cities.

[0055] 6. High Degree of Automation: The car wash circulating water sludge dewatering device is equipped with multiple sensors, including a sludge level gauge, a humidity gauge, and a sludge weighing instrument, enabling real-time tracking of relevant parameters. Based on the data collected by the sensors, it automatically controls the operation of equipment such as the sand discharge solenoid valve, the air tank solenoid valve, and the dewatering fan, achieving fully automated processing. This not only reduces manual operation and minimizes the impact of human factors on the processing effect but also improves processing efficiency and ensures the stable operation of the device. Attached Figure Description

[0056] Figure 1 is a schematic diagram of the structure of the car wash circulating water sludge dewatering device of the present invention;

[0057] Figure 2 is a schematic diagram of the structure of the multi-stage sedimentation tank of the present invention;

[0058] Figure 3 is a bottom view of the multi-stage sedimentation tank described in this invention;

[0059] Figure 4 is a schematic diagram of the frame structure in the multi-stage sedimentation tank of the present invention.

[0060] Figure 5 is a schematic diagram of the vertical state of the blocking plate described in this invention;

[0061] Figure 6 is a schematic diagram of the horizontal state of the barrier plate described in this invention;

[0062] Figure 7 is a schematic diagram of the internal structure of the frame described in this invention;

[0063] Figure 8 is a schematic diagram of the structure of the pushing component of the present invention;

[0064] Figure 9 is a schematic diagram of the structure of the driving component of the present invention;

[0065] Figure 10 is an enlarged schematic diagram of A in Figure 2.

[0066] In the diagram: 100+ stage sedimentation tanks, 110a first treatment tank, 110a1 sedimentation tank inlet, 110a2 first intermediate pipe, 110a3 second intermediate pipe, 110b second treatment tank, 110c third treatment tank, 111 shell, 111a air pipe, 120 sediment level gauge, 130 frame, 130a notch, 131 side plate, 132 front side plate, 133 rear side plate, 140 air tank, 150 air outlet nozzle, 160 drive assembly, 161 reciprocating screw, 162 fan blade, 163 piston. 170 Opening and closing assembly, 171 Rotating component, 172 Sealing block, 173 Baffle plate, 173a Anti-turbulence channel, 180 Pushing assembly, 181 Gear, 182 Rack, 183 Electric push rod, 184 Telescopic sleeve rod, 185 Connecting rod, 190 Limiting assembly, 191 Slide groove, 192 Pressing rod, 200 Sediment drying tray, 300 Drainage pipe, 400 Return water pipe, 500 Sand discharge pipe, 510 Sand discharge solenoid valve, 520 Sand discharge inclined pipe, 600 Water collection well, 700 Box body, 800 Solar power generation device. Detailed Implementation

[0067] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0068] First Embodiment

[0069] As shown in Figures 1, 2, and 6, the car wash circulating water sludge dewatering device includes:

[0070] A multi-stage sedimentation tank 100 includes first to Nth treatment tanks 110a, 110b, and 110c, a sediment level gauge 120, a frame 130, an air tank 140, and an air outlet nozzle 150. The first to Nth treatment tanks 110a, 110b, and 110c are connected sequentially. A sedimentation tank inlet 110a1 is opened on the upper part of the side wall of the first treatment tank 110a. Sediment liquid is respectively placed in the first to Nth treatment tanks 110a, 110b, and 110c. The positioner 120 and the frame 130 are located at the lower part of the processing boxes 110a, 110b, and 110c. Each frame 130 has an airflow channel. An air outlet nozzle 150 is provided on the lower surface of the frame 130 and communicates with the airflow channel. The airflow channel in the frame 130 also communicates with the gas tank 140, which is located on the outer wall of the processing boxes 110a, 110b, and 110c.

[0071] A sedimentation drying tray 200 is located below the multi-stage sedimentation tank 100;

[0072] A sand discharge pipe 500 is provided, one end of which is connected to the bottom of the first to Nth treatment boxes 110a, 110b, 110c, and the other end of which is connected to the top of the sedimentation drying tray 200. A sand discharge solenoid valve 510 is provided inside the sand discharge pipe 500.

[0073] A drain pipe 300, one end of which is connected to the bottom of the sedimentation and drying tray 200, and the other end of which is located inside the water collection well 600;

[0074] The return water pipe 400 has one end located inside the water collection well 600 and the other end connected to the sedimentation tank inlet 110a1 of the multi-stage sedimentation tank 100.

[0075] The collection well 600 is used to contain car wash wastewater. The wastewater is introduced into the multi-stage sedimentation tank 100 through the return water pipe 400 and settles sequentially in the first to Nth treatment tanks 110a, 110b, and 110c, so that sludge in the wastewater settles at the bottom of the multi-stage sedimentation tank 100. When the sludge level gauge 120 in the multi-stage sedimentation tank 100 detects that the sludge has settled to a specified height, it controls the opening of the sand discharge solenoid valve 510 on the sand discharge pipe 500, so that the sludge in the multi-stage sedimentation tank 100 is discharged through the sand pipe 500 to the sand drying tray 200. The sand drying tray 200 dewaters the sludge, and the separated water is led to the collection well 600 through the drain pipe 300 for recycling. The dewatered and dried sludge remains in the sand drying tray 200 for further processing. The dewatered sludge has a significantly reduced moisture content, preventing high-moisture sludge from directly entering drainage pipes and effectively preventing sludge from remaining in drainage pipes for extended periods. This reduces the risk of clogging municipal pipe networks and ensures the normal operation of urban drainage systems. It not only reduces the cost of municipal dredging vehicles but also alleviates the difficulty and cost of subsequent sludge disposal, improving the overall efficiency of sludge treatment.

[0076] In addition, the gas tank 140 and the gas nozzle 150 are used together, and the gas nozzle 150 is set on the lower surface of the frame 130. In this way, the gas sprayed from the gas nozzle 150 can disturb the sludge deposited at the bottom of the multi-stage sedimentation tank 100, prevent the sludge from adhering, and promote the complete discharge of the sludge.

[0077] As shown in Figure 2, there are multiple processing boxes 110a, 110b, and 110c, corresponding to the first processing box 110a, the second processing box 110b, and the third processing box 110c, respectively. The first processing box 110a, the second processing box 110b, and the third processing box 110c are arranged in a row. Of course, the number of processing boxes 110a, 110b, and 110c can be three or more, and they can be arranged in an S-shape, etc.

[0078] A sedimentation tank inlet 110a1 is provided on the upper part of the left side wall of the first treatment tank 110a, and the sedimentation tank inlet 110a1 is connected to the return water pipe 400. The right side wall of the first treatment tank 110a is connected to the second treatment tank 110b through a first intermediate pipe 110a2, which is located at the upper part of both the first treatment tank 110a and the second treatment tank 110b. In this way, the car wash wastewater introduced through the return water pipe 400 first enters the first treatment tank 110a through the sedimentation tank inlet 110a1, where sludge sedimentation occurs. When the car wash wastewater in the first treatment tank 110a reaches the height of the first intermediate pipe 110a2, it enters the second treatment tank 110b through the first intermediate pipe 110a2, where sludge sedimentation occurs. Similarly, the right side wall of the second treatment tank 110b and the left side wall of the third treatment tank 110c are connected by a second intermediate pipe 110a3, which is located at the upper part of both the second treatment tank 110b and the third treatment tank 110c. That is, when the car wash wastewater in the second treatment tank 110b reaches the height of the second intermediate pipe 110a3, the wastewater enters the third treatment tank 110c through the second intermediate pipe 110a3, where sludge sedimentation occurs. This process allows the car wash wastewater to undergo sludge sedimentation sequentially in the first treatment tank 110a, the second treatment tank 110b, and the third treatment tank 110c.

[0079] As shown in Figures 2 and 3, the lower parts of the first to Nth treatment tanks 110a, 110b, and 110c are respectively inverted pyramidal shapes, and the bottoms of the first to Nth treatment tanks 110a, 110b, and 110c are connected to the sand discharge pipe 500, so that the sludge converges along the side of the inverted pyramidal shape to the bottom of the first to Nth treatment tanks 110a, 110b, and 110c, and is discharged through the sand discharge pipe 500.

[0080] The upper portions of the first processing box 110a, the second processing box 110b, and the third processing box 110c may be cuboids, and the first processing box 110a, the second processing box 110b, and the third processing box 110c are arranged in the width direction. Of course, the first processing box 110a, the second processing box 110b, and the third processing box 110c may also be in other shapes.

[0081] Referring to Figure 3, the bottom of the second treatment tank 110b is directly connected to the sand discharge pipe 500, and the bottoms of the first treatment tank 110a and the third treatment tank 110c are respectively connected to the sand discharge inclined pipe 520, which is connected to the sand discharge pipe 500. In this way, the sludge in the first treatment tank 110a and the third treatment tank 110c flows through the sand discharge inclined pipe 520 into the sand discharge pipe 500, and is then collected and discharged by the sand discharge pipe 500.

[0082] Taking the first processing tank 110a as an example, the sediment level gauge 120 is vertically installed on the inner side wall of the first processing tank 110a. Referring to Figure 4, the frame 130 has a notch 130a through which the sediment level gauge 120 passes.

[0083] As shown in Figures 2 and 4, the frame 130 is disposed at the lower part of the first processing box 110a, specifically located between the upper and lower parts of the first processing box 110a. The frame 130 is adapted to the shape of the upper part of the first processing box 110a, that is, the frame 130 is rectangular. The frame 130 includes two side plates 131, a front side plate 132, and a rear side plate 133, with the front side plate 132 and the rear side plate 133 respectively connected between the two side plates 131.

[0084] Referring again to Figure 6, an air outlet nozzle 150 is provided on the lower surface of the frame 130, and the air outlet nozzles 150 are respectively provided on the lower surfaces of the side plate 131, the front side plate 132, and the rear side plate 133. It can be seen that a plurality of air outlet nozzles 150 are evenly arranged on the lower surface of the frame 130.

[0085] As shown in Figures 5 to 7, the multi-stage sedimentation tank 100 further includes at least one opening / closing component 170, the opening / closing component 170 comprising:

[0086] Multiple rotating members 171 are rotatably mounted on the frame 130;

[0087] Multiple sealing blocks 172 are disposed on the rotating member 171.

[0088] A baffle plate 173 is rotatably mounted on the frame 130. The baffle plate 173 is provided with an anti-turbulence groove 173a, which is adapted to the rotating member 171 and the sealing block 172 respectively.

[0089] The baffle plate 173 can be reversibly rotated from a horizontal state to a vertical state. In the horizontal state, the rotating member 171 and the sealing block 172 are embedded in the anti-turbulence groove 173a.

[0090] In the horizontal state of the baffle plate 173, the upper and lower spaces of the first treatment tank 110a are separated by the horizontal baffle plate 173, so that the car wash wastewater located in the upper space of the first treatment tank 110a cannot enter the lower space of the first treatment tank 110a. At this time, the air nozzle 150 can blow high-pressure airflow to disturb the sludge, and when the mud level gauge 120 detects that the sludge has settled to a specified height, the solenoid valve 510 on the sand discharge pipe 500 is controlled to open, and the sludge is discharged to the settling and drying tray 200.

[0091] After the dredging is completed, the baffle plate 173 is rotated to a vertical position, so that the car wash wastewater passes through the gap between the rotating parts 171, etc., and continues to settle sludge in the lower part of the first treatment tank 110a.

[0092] To further explain, when the baffle plate 173 is in a horizontal state, the sealing block 172 and the anti-turbulence groove 173a are tightly closed to form a sealed space. At this time, the air outlet nozzle 150 on the lower surface of the frame 130 blows out a high-pressure airflow to impact the deposited sediment. The tight closure of the sealing block 172 and the baffle plate 173 prevents airflow leakage, making the impact force of the high-pressure airflow stronger and ensuring that the sediment is directed into the discharge pipe 500.

[0093] To further explain, the air nozzle 150 has two functions. First, by spraying air, it agitates the sludge below, allowing it to reach a cement-mixed state before discharge, thus preventing the settled dry sludge from adhering firmly to the wall surface and making direct discharge difficult. Second, the exhaust system pressurizes the lower part of the frame 130, allowing the cement-mixed sludge to be discharged more forcefully under positive pressure.

[0094] Referring to Figure 4, each frame 130 has multiple opening and closing components 170 arranged along the length of the frame 130. The rotating member 171 of each opening and closing component 170 is located in front of the baffle plate 173. When the rotating member 171, which is in a vertical position, rotates forward by 90°, it reaches a horizontal position. At this point, the rotating member 171 and its sealing block 172 are embedded within the anti-turbulence groove 173a on the rotating member 171. When the rotating member 171, which is in a horizontal position, rotates backward by 90°, it disengages from the anti-turbulence groove 173a, and the rotating member 171 returns to a vertical position.

[0095] As shown in Figures 7 and 8, the multi-stage sedimentation tank 100 further includes a driving component 180, which is disposed inside the frame 130. The driving component 180 includes:

[0096] Gear 181, gear 181 is respectively sleeved on the pin shaft of the rotating part 171 and the blocking plate 173;

[0097] Rack 182, which meshes with gear 181;

[0098] An electric push rod 183 is connected to the rack 182 via a transmission connection.

[0099] Each frame 130 is provided with a pushing component 180, which can simultaneously drive multiple rotating parts 171 on the frame 130 to rotate. The electric push rod 183 drives the rack 182 to move, which in turn drives the gear 181 to rotate, and the gear 181 drives the rotating parts 171 and the blocking plate 173 connected to it to rotate.

[0100] Referring to Figure 5, the sealing block 172 has a plate-like structure and is sleeved on the rotating member 171. Multiple sealing blocks 172 are arranged at intervals along the length of the rotating member 171. When the rotating member 171 is in a vertical position, the sealing blocks 172 are arranged vertically, allowing for greater downward movement space for sludge sedimentation. When the rotating member 171 is in a horizontal position, the sealing blocks 172 are arranged horizontally, with their inner lines within the anti-turbulence groove 173a.

[0101] Before rotation, the top and bottom of the sealing block 172 rotate to become horizontal circumferential sidewalls. During the water sedimentation process, some sludge may settle to the top of the sealing block 172. However, after the sealing block 172 rotates, the rotation of the sealing block 172 and the switching of the end face will cause the small amount of sludge settled on it to detach from the end face and be converted into a horizontal circumferential sidewall. Through this conversion action, the circumferential sidewall removes the settled sludge and has a good sealing environment.

[0102] Since the rotating component 171 and the baffle plate 173 rotate synchronously, when the rotating component 171 rotates from a horizontal state to a vertical state, the sealing block 172 also rotates from a horizontal arrangement to a vertical arrangement, so that the separation action of the sealing block 172 on the rotating component 171 and the anti-turbulence groove 173a is precisely synchronized.

[0103] As shown in Figure 7, gears 181 are connected to both ends of the rotating component 171, and pins are connected to both ends of the blocking plate 173, with gears 181 connected to the pins at both ends of the blocking plate 173. Racks 182 are correspondingly provided at both ends of the rotating component 171 and the blocking plate 173, and the racks 182 mesh with the gears 181 on the same side. The electric push rod 183 is connected to the racks 182 at both ends of the rotating component 171 via a connecting rod 185. Thus, the electric push rod 183 pushes and pulls the connecting rod 185, causing the two racks 182 to move, which in turn causes the meshing gears 181 to rotate, thereby causing the rotating component 171 and the blocking plate 173 to rotate. By connecting gears 181 to both ends of the rotating component 171 and the blocking plate 173, the smoothness of the rotation of the rotating component 171 and the blocking plate 173 is improved.

[0104] Referring to Figure 7, the pushing assembly 180 also includes a telescopic sleeve 184, which is connected to the connecting rod 185. Simultaneously, both the telescopic sleeve 184 and the electric push rod 183 are connected to the connecting rod 185. Through this structural design, when the electric push rod 183 drives the connecting rod 185, the telescopic sleeve 184 can work in concert to effectively improve the stability of the rotation of the rotating component 171 and the blocking plate 173, ensuring that the opening and closing assembly 170 operates smoothly and reliably during operation.

[0105] Referring again to Figure 7, the two ends of the rotating component 171 pass through the interiors of the two side plates 131 and are respectively connected to the gears 181. The pins at both ends of the blocking plate 173 pass through the interiors of the two side plates 131 and are respectively connected to the gears 181. That is, the gears 181 and rack 182 are arranged inside the side plates 131. The electric push rod 183, telescopic sleeve rod 184, and connecting rod 185 are arranged inside the front side plate 132.

[0106] As shown in Figures 5 and 10, the multi-stage sedimentation tank 100 further includes a limiting component 190, the number of which is equal to the number of baffles 173, and the limiting component 190 includes:

[0107] The slide 191 is formed on the inner side of the side plate 131 of the frame 130;

[0108] Pressing rod 192 slides within the groove 191 and is connected to the rack 182. The pressing rod 192 moves with the rack 182 and can press against the horizontally positioned blocking plate 173.

[0109] The pressing rod 192 is mounted on the rack 182, and therefore moves with the rack 182. The groove 191 allows the pressing rod 192 to pass through. When the baffle plate 173 is in a horizontal state, the pressing rod 192 is positioned directly above the horizontal baffle plate 173 and applies a clamping force to the baffle plate 173, ensuring that the baffle plate 173 is completely closed. At this time, the outer edge of the baffle plate 173 remains tightly fitted to the frame 130, effectively preventing sediment leakage and loosening of the baffle plate 173, and ensuring reliable isolation of the internal space of the multi-stage sedimentation tank 100. When the baffle plate 173 rotates from a horizontal state to a vertical state, the pressing rod 192 will retract along the groove 191, releasing the clamping state on the baffle plate 173 and providing space for the rotation of the baffle plate 173.

[0110] To prevent mud and sand from obstructing the mechanical running area within the chute 191, a flexible sealing barrier is preferably provided in the chute 191.

[0111] As shown in Figures 2 to 4, the gas tank 140 is arranged outside the first processing box 110a, the second processing box 110b and the third processing box 110c, specifically in front of the first processing box 110a, the second processing box 110b and the third processing box 110c.

[0112] The gas tank 140 is equipped with three gas outlets, which are respectively connected to the airflow channels inside the first processing box 110a, the second processing box 110b, and the third processing box 110c. The high-pressure gas stored in the gas tank 140 is delivered to the corresponding processing box through the three gas outlets via a compressor. Furthermore, a gas tank solenoid valve is installed at each gas outlet. The main function of the gas tank solenoid valve is to control the opening and closing of the airflow to achieve precise regulation of gas delivery.

[0113] During the dredging process, the solenoid valve of the gas tank ensures, through control logic, that the airflow can only flow unidirectionally from the gas tank 140 to the airflow channels in each treatment box, effectively preventing backflow of mud and sand caused by airflow reversal.

[0114] The solenoid valves of the three gas outlets can be individually controlled to open and close each gas outlet based on the detection data of the sediment level gauge 120.

[0115] As shown in Figures 2 and 9, the multi-stage sedimentation tank 100 further includes a drive assembly 160, which includes:

[0116] A reciprocating screw 161 is rotatably mounted inside a housing 111, which is fixed to the inner wall of the first processing box 110a. One end of the housing 111 in the longitudinal direction is connected to the air tank 140 via an air pipe 111a. The output shaft of the reciprocating screw 161 extends out from the other end of the housing 111 in the longitudinal direction. A one-way valve is provided on the air pipe 111a.

[0117] Fan blade 162 is located inside the first processing tank 110a and is opposite to the sedimentation tank inlet 110a1. Fan blade 162 is connected to the output shaft of the reciprocating screw 161.

[0118] Piston 163 is located inside the housing 111 and is limited by a limiting strip inside the housing 111, allowing it to move along the length of the housing 111. Piston 163 is screwed to the reciprocating screw 161.

[0119] When car wash wastewater flows from the sedimentation tank inlet 110a1 into the first treatment tank 110a, the flow of wastewater drives the fan blade 162 to rotate. During the rotation of the fan blade 162, through its connection with the output shaft of the reciprocating screw 161, it drives the piston 163 to move along the length of the housing 111. During the movement of the piston 163, external air is compressed into the air tank 140 for storage by means of a one-way valve. Because the direction and magnitude of the force exerted by the car wash wastewater on the fan blade 162 change, the fan blade 162 rotates in both directions, which in turn drives the piston 163 to reciprocate along the length of the housing 111, realizing a continuous gas compression and storage process, providing air source support for subsequent sludge removal and other operations in the multi-stage sedimentation tank 100.

[0120] It should be noted that the housing 111 is also provided with an air inlet, which communicates with the outside. During a certain phase of the piston 163's movement, it moves away from the air inlet, causing the internal space of the housing 111 to increase and the air pressure to decrease. At this time, outside air, under atmospheric pressure, smoothly enters the housing 111 through the air inlet. As the piston 163 moves in the opposite direction, i.e., towards the air inlet, the internal space of the housing 111 gradually decreases, the air is continuously compressed, and the air pressure increases accordingly. When the compressed air pressure reaches a certain level, it enters the air tank 140 for storage through the air pipe 111a connected to the housing 111.

[0121] As shown in Figure 1, the car wash circulating water sludge dewatering device further includes:

[0122] The multi-stage sedimentation tank 100 is disposed inside the housing 700;

[0123] A solar power generation device 800 is installed on the top of the housing 700 and provides power for the operation of the multi-stage sedimentation tank 100 and the sedimentation drying tray 200.

[0124] Taking the multi-stage sedimentation tank 100 as an example, the solar power generation device 800 supplies power to the electric push rod 183, compressor, etc. When the battery power corresponding to the solar power generation device 800 is lower than 20%, it automatically switches to mains power supply. Therefore, this application can achieve closed-loop operation of the entire process from wastewater sedimentation, sludge discharge, drying and dewatering to water resource reuse.

[0125] In summary, the multi-stage sedimentation tank 100, through its multi-stage sedimentation structure, effectively improves sludge settling efficiency, ensuring that sludge in the wastewater is fully deposited at the bottom of the tank. The sludge level gauge 120 enables precise monitoring of sludge deposition height, providing a reliable basis for automated sludge removal. The rapid response of the sludge removal solenoid valve 510 ensures the timeliness and accuracy of the sludge removal process, preventing excessive sludge accumulation within the tank. The air tank 140 works in conjunction with the air nozzle 150, which is located on the lower surface of the frame 130. The gas ejected from the air nozzle 150 agitates the sludge deposited at the bottom of the multi-stage sedimentation tank 100. This agitation helps break up the agglomeration of sludge particles, promoting further settling and improving sedimentation efficiency.

[0126] Second Embodiment

[0127] The present invention also provides a method for using the car wash circulating water sludge dewatering device of the first embodiment, including the following steps:

[0128] Step 1, Wastewater Collection and Sedimentation. The wastewater from the car wash in the collection well 600 is directed to the multi-stage sedimentation tank 100 via the return water pipe 400. The wastewater sequentially passes through the first to Nth treatment tanks 110a, 110b, and 110c within the multi-stage sedimentation tank 100 for sedimentation, allowing the sludge in the wastewater to settle to the bottom of each of the first to Nth treatment tanks 110a, 110b, and 110c.

[0129] Step 2, sludge discharge. When the sludge level gauges 120 in the first to Nth treatment tanks 110a, 110b, and 110c detect that the sludge in the first to Nth treatment tanks 110a, 110b, and 110c has reached the specified height, the solenoid valve 510 on the sand discharge pipe 500 is opened to allow the sludge in the first to Nth treatment tanks 110a, 110b, and 110c to be discharged through the sand pipe 500 to the settling and drying tray 200.

[0130] Step 3, sludge drying. The settling and drying tray 200 dewaters the sludge within it.

[0131] Step four, water treatment. The separated water is led to the collection well 600 through the drain pipe 300.

[0132] In step one, the baffle plate 173 is in a vertical state. The car wash wastewater located in the upper part of the space of the first to Nth treatment tanks 110a, 110b, 110c can enter the lower part of the space of the first to Nth treatment tanks 110a, 110b, 110c through the gap between the rotating parts 171 and undergo sludge settling, while the clean water can be discharged from the upper part of the first to Nth treatment tanks 110a, 110b, 110c.

[0133] In step two, the pushing component 180 drives the baffle plate 173 to rotate to a horizontal state. At this time, the air nozzle 150 blows high-pressure airflow to disturb the sludge. When the sludge level gauge 120 detects that the sludge has settled to a specified height, the solenoid valve 510 on the sand discharge pipe 500 is opened to discharge the sludge to the settling and drying tray 200.

[0134] In step three, the humidity meter inside the sedimentation drying tray 200 monitors the sludge humidity in real time, and the dewatering blower automatically adjusts its working state according to the data fed back by the humidity meter to dewater the sludge. During the dewatering process, the sludge weighing instrument measures the weight of the sludge in the drying tray in real time. When the sludge weight no longer changes significantly and reaches the preset drying standard (such as the sludge moisture content decreasing to a certain value), it indicates that the sludge drying is complete.

[0135] In step four, the water separated by the sedimentation and drying plate 200 flows back to the collection well 600 through the drain pipe 300 and can be reused for car washing or other suitable purposes, thus realizing the recycling of water resources.

[0136] Following step four, the method further includes:

[0137] Step 5, sludge drying treatment. The volume of the dried sludge is greatly reduced. At this time, the dried sludge can be manually or with the help of simple equipment to be cleaned out of the settling and drying pan 200 for subsequent disposal, such as landfill, incineration or as raw material for building materials.

[0138] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A car wash circulating water sludge dewatering device, characterized in that, include: A multi-stage sedimentation tank (100) includes a first to Nth treatment tank (110a, 110b, 110c), a sediment level gauge (120), a frame (130), an air tank (140), and an air outlet nozzle (150). The first to Nth treatment tanks (110a, 110b, 110c) are connected sequentially. A sedimentation tank inlet (110a) is provided on the upper side wall of the first treatment tank (110a). 0a1), the first to the Nth treatment tanks (110a, 110b, 110c) are respectively equipped with a sediment level gauge (120) and a frame (130). The frame (130) is located at the bottom of the treatment tanks (110a, 110b, 110c). Each frame (130) is provided with an airflow channel. The lower surface of the frame (130) is provided with an air outlet nozzle (150). The airflow channel within the frame (130) is connected to the air tank (140), which is located on the outer wall of the treatment tanks (110a, 110b, 110c); a sedimentation drying tray (200) is located below the multi-stage sedimentation tank (100); and a sand discharge pipe (500) is connected at one end to the first to Nth... The bottom of the treatment tanks (110a, 110b, 110c) is connected, and the other end of the sand discharge pipe (500) is connected to the top of the sedimentation drying tray (200). A sand discharge solenoid valve (510) is installed inside the sand discharge pipe (500); a drain pipe (300) is connected, one end of which is connected to the bottom of the sedimentation drying tray (200), and the other end of which is located inside the water collection well (600); A return water pipe (400) is provided, one end of which is located inside the collection well (600), and the other end of which is connected to the sedimentation tank inlet (110a1) of the multi-stage sedimentation tank (100). The multi-stage sedimentation tank (100) further includes at least one opening and closing assembly (170), which includes: multiple rotating parts (171) rotatably mounted on the frame (130); multiple sealing blocks (172) mounted on the rotating parts (171); and a baffle plate (173) rotatably mounted on the frame (130). The baffle plate (173) is provided with anti-turbulence grooves (173a), which are adapted to the rotating member (171) and the sealing block (172) respectively. The baffle plate (173) can be reversibly rotated from a horizontal state to a vertical state. In the horizontal state, the rotating member (171) and the sealing block (172) are embedded in the anti-turbulence grooves (173a), so that the treatment tanks (110a, 110b, 110c) are divided into upper and lower parts that are not connected to each other. In the vertical state, the car wash wastewater can flow into the lower part of the treatment tanks (110a, 110b, 110c) through the gap between the rotating members (171).

2. The car wash circulating water sludge dewatering device according to claim 1, characterized in that, The multi-stage sedimentation tank (100) further includes a driving assembly (180), which is disposed inside the frame (130). The driving assembly (180) includes: a gear (181), which is sleeved on the pin shaft of the baffle plate (173); a rack (182), which meshes with the gear (181); and an electric push rod (183), which is connected to the rack (182) in a transmission manner.

3. The car wash circulating water sludge dewatering device according to claim 2, characterized in that, A gear (181) is sleeved on the rotating part (171), and the gear (181) sleeved on the rotating part (171) meshes with the rack (182).

4. The car wash circulating water sludge dewatering device according to claim 3, characterized in that, The frame (130) includes: two side plates (131) arranged opposite to each other, the two ends of the rotating member (171) passing through the interior of the two side plates (131) respectively and connected to the gears (181) respectively, the pins at both ends of the blocking plate (173) passing through the interior of the two side plates (131) respectively and connected to the gears (181) respectively, and a rack (182) is provided in each side plate (131); a front side plate (132) connected to the two side plates (131), the electric push rod (183) is provided in the front side plate (132), and the electric push rod (183) is connected to the racks (182) in the two side plates (131) through a connecting rod (185); and a rear side plate (133) connected to the two side plates (131).

5. The car wash circulating water sludge dewatering device according to claim 4, characterized in that, The push assembly (180) further includes a telescopic sleeve (184), which is disposed within the front side plate (132) and connected to the connecting rod (185).

6. The car wash circulating water sludge dewatering device according to claim 2, characterized in that, The multi-stage sedimentation tank (100) further includes a limiting component (190), the number of which is equal to the number of the baffles (173). The limiting component (190) includes: a chute (191) which is formed on the inner side of the side plate (131) of the frame (130); and a pressing rod (192) which slides in the chute (191) and is connected to the rack (182). The pressing rod (192) moves with the rack (182) and can press against the baffles (173) which are in a horizontal state.

7. The car wash circulating water sludge dewatering device according to claim 1, characterized in that, The multi-stage sedimentation tank (100) further includes a drive assembly (160), which includes a reciprocating screw (161) rotatably disposed within a housing (111). The housing (111) is fixed to the inner wall of the first treatment tank (110a). One end of the housing (111) along its length is connected to the gas tank (140) via a gas pipe (111a). The output shaft of the reciprocating screw (161) extends from the other end of the housing (111) along its length. Through; fan blade (162), the fan blade (162) is located inside the first processing box (110a) and opposite to the sedimentation tank inlet (110a1), the fan blade (162) is connected to the output shaft of the reciprocating screw (161); piston (163), the piston (163) is located inside the housing (111) and is limited by the limiting strip inside the housing (111) and can move along the length direction of the housing (111), the piston (163) is screwed to the reciprocating screw (161).

8. The car wash circulating water sludge dewatering device according to claim 1, characterized in that, Also includes: The box body (700) is provided inside the multi-stage sedimentation tank (100); A solar power generation device (800) is installed on top of the housing (700) and provides electrical energy for the operation of the multi-stage sedimentation tank (100) and the sedimentation drying tray (200).

9. A method of using the car wash circulating water sludge dewatering device as described in any one of claims 1 to 8, characterized in that, Includes the following steps: The wastewater from the car wash in the collection well (600) is diverted to the multi-stage sedimentation tank (100) via the return water pipe (400). The wastewater passes sequentially through the first to Nth treatment tanks (110a, 110b, 110c) in the multi-stage sedimentation tank (100) to settle, so that the sludge in the wastewater settles to the bottom of the first to Nth treatment tanks (110a, 110b, 110c). When the sludge level gauge (120) in the first to Nth treatment tanks (110a, 110b, 110c) detects the first... When the sludge in the first to Nth treatment tanks (110a, 110b, 110c) reaches a specified height, the solenoid valve (510) on the sand discharge pipe (500) is opened so that the sludge in the first to Nth treatment tanks (110a, 110b, 110c) is discharged through the sand discharge pipe (500) to the sand settling and drying tray (200); the sand settling and drying tray (200) dewaters the sludge in the sand settling and drying tray (200); the separated water is led to the water collection well (600) through the drain pipe (300).

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