Car washing circulating water sludge dewatering device and using method thereof

Abstract

The invention provides a car washing circulating water sludge dewatering device and a using method thereof.The car washing circulating water sludge dewatering device comprises a multi-stage sedimentation tank, a desilting and drying disc, a desilting pipe, a drainage pipe and a water return pipe, and the multi-stage sedimentation tank comprises treatment boxes from the first treatment box to the Nth treatment box, a silt liquid level instrument, a frame, an air tank and an air outlet spray head; the first to Nth treatment boxes are communicated in sequence, silt liquid level instruments and frames are respectively arranged in the first to Nth treatment boxes, an airflow channel is respectively arranged in each frame, an air outlet nozzle is arranged on the lower surface of each frame, the air outlet nozzles are communicated with the airflow channels, and the airflow channels in the frames are further communicated with the air tank; the air tank is arranged on the outer side wall of the treatment box, the multi-stage sedimentation tank effectively improves the sludge sedimentation efficiency through a multi-stage sedimentation structure, it is ensured that sludge in wastewater is fully deposited at the bottom of the tank, accurate monitoring of the sludge deposition height is achieved through the arrangement of the sediment liquid level instrument, and a reliable basis is provided for automatic sediment discharge.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a car wash circulating water sludge dewatering device and a use method thereof. Background Art

[0002] In the car wash industry, the treatment of wastewater and sludge is crucial. Currently, traditional car wash wastewater treatment relies on simple sedimentation tanks for initial treatment, which only removes large particles of impurities from the wastewater. Car washes often lack dedicated sludge treatment equipment for the sludge they generate. Instead, they simply discharge the high-water content sludge into the municipal pipe network through their own drainage systems, relying on municipal silt removal vehicles for regular removal. Specifically, car washes typically simply accumulate the sludge or discharge it through drainage, then contact silt removal vehicles for removal once a sufficient amount has accumulated. This traditional treatment model is prevalent in car washes of all sizes. Most of these car washes only have simple sedimentation tanks and drainage pipes within the premises, discharging the treated wastewater and sludge directly outside.

[0003] However, this traditional treatment method has numerous drawbacks. Firstly, because sludge is simply accumulated or discharged directly, it can easily remain in drainage pipes and other places for extended periods of time. This can easily clog municipal pipes, disrupting the proper functioning of urban drainage systems, especially when drainage is poor. Secondly, traditional methods fail to effectively dry the sludge, failing to reduce sludge volume at the source. This results in a large volume and weight, making subsequent removal by municipal desilting vehicles expensive and increasing the difficulty and cost of subsequent sludge disposal.

[0004] In addition, the traditional treatment process mainly relies on manpower to contact municipal dredging vehicles, lacks automated monitoring and equipment operation control mechanisms, cannot automatically monitor key parameters such as sludge volume and water content, and cannot automatically control equipment operation, resulting in low treatment efficiency and poor accuracy, and more reliance on manual experience and operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a car wash circulating water sludge dewatering device and a method of using the same in order to address the deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A car wash circulating water sludge dewatering device, comprising: A multi-stage sedimentation tank, comprising first to Nth treatment boxes, a sediment level meter, a frame, a gas tank, and an air outlet nozzle. The first to Nth treatment boxes are sequentially connected, a sedimentation tank inlet is provided on the upper side wall of the first treatment box, and a sediment level meter and a frame are respectively provided in the first to Nth treatment boxes. The frame is provided at the lower part of the treatment box, and each of the frames is provided with an air flow channel. An air outlet nozzle is provided on the lower surface of the frame, and the air outlet nozzle is connected to the air flow channel. The air flow channel in the frame is also connected to the gas tank, and the gas tank is provided on the outer side wall of the treatment box; A sand settling and drying tray, the sand settling and drying tray is located below the multi-stage sedimentation tank; A sand discharge pipe, one end of which is connected to the bottom of the first to Nth processing boxes, and the other end of which is connected to the top of the sand drying tray, and a sand discharge solenoid valve is provided in the sand discharge pipe; a drainage 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; A return pipe, one end of which is located in the water collection well, and the other end of which is connected to the sedimentation tank inlet of the multi-stage sedimentation tank.

[0007] Optionally, the multi-stage sedimentation tank further includes at least one opening and closing component, and the opening and closing component includes: a plurality of rotating members, wherein the rotating members are rotatably arranged on the frame; A plurality of sealing blocks, wherein the sealing blocks are arranged on the rotating member, a blocking plate rotatably mounted on the frame, the blocking plate being provided with anti-disturbance flow grooves, the anti-disturbance flow grooves being adapted to the rotating member and the sealing block respectively; The blocking plate can be reversibly rotated from a horizontal state to a vertical state. In the horizontal state, the rotating member and the sealing block are embedded in the anti-turbation flow groove.

[0008] Optionally, the multi-stage sedimentation tank further includes a pushing assembly, which is disposed inside the frame 130 and includes: Gear, the pin shaft of the blocking plate is sleeved with a gear; a rack meshing with the gear; An electric push rod is transmission-connected to the rack.

[0009] Optionally, a gear is sleeved on the rotating member, and the gear sleeved on the rotating member is engaged with the rack.

[0010] Optionally, the framework includes: Two side plates, the two side plates are arranged opposite to each other, the two ends of the rotating member are respectively passed through the inside of the two side plates and are respectively connected to the gears, the pins at the two ends of the blocking plate are respectively passed through the inside of the two side plates and are respectively connected to the gears, and a rack is respectively provided in each side plate; A front side plate, the front side plate is connected to the two side plates, the electric push rod is arranged in the front side plate, and the electric push rod is connected to the racks in the two side plates through a connecting rod; A rear side panel is connected to the two side panels.

[0011] Optionally, the pushing component further includes: A telescopic sleeve rod is arranged in the front side plate and connected to the connecting rod.

[0012] Optionally, the multi-stage sedimentation tank further includes a limiting assembly, the number of the limiting assemblies is equal to the number of the blocking plates, and the limiting assembly includes: A chute, the chute being provided on the inner side of the side plate of the frame; A pressing rod slides in the sliding groove and is connected to the rack. The pressing rod moves along with the rack and can be pressed against the top of the blocking plate in a horizontal state.

[0013] Optionally, the multi-stage sedimentation tank further includes a drive assembly, and the drive assembly includes: a reciprocating screw, the reciprocating screw being rotatably disposed within a housing fixed to an inner wall of the first processing box, one end of the housing in a lengthwise direction being connected to the gas tank via an air pipe, and an output shaft of the reciprocating screw extending from the other end of the housing in a lengthwise direction; a fan blade, the fan blade being located inside the first processing box and opposite to the inlet of the sedimentation tank, and the fan blade being connected to the output shaft of the reciprocating screw; The piston is located in the housing and is limited by a limit bar in the housing so as to be movable along the length direction of the housing. The piston is threadedly connected to the reciprocating screw.

[0014] Optionally, it also includes: A box body, wherein the multi-stage sedimentation tank is arranged inside the box body; A solar power generation device is arranged on the top of the box and provides electric energy for the operation of the multi-stage sedimentation tank and the sand drying tray.

[0015] The present invention also provides a method for using a car wash circulating water sludge dewatering device, comprising the following steps: The car wash sewage in the water collection well is led to the multi-stage sedimentation tank by using a return pipe, and the car wash sewage is sequentially passed through the first to Nth treatment tanks in the multi-stage sedimentation tank to settle, so that the sludge in the car wash sewage is respectively settled to the bottom of the first to Nth treatment tanks; When the sediment level meter in the first to Nth treatment tank detects that the sludge in the first to Nth treatment tank reaches the specified height, the sand discharge solenoid valve on the sand discharge pipe is controlled to open, so that the sludge in the first to Nth treatment tank is discharged to the sand drying tray through the sand pipe; The desilting and drying tray dehydrates the sludge in the desilting and drying tray; The separated water is led to the water collection well through the drainage pipe.

[0016] Compared with the existing technology, this technical solution has the following advantages: 1. Source reduction The car wash circulating water sludge dewatering system 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 the costs of subsequent transportation and disposal, achieving the goal of reducing sludge handling volume at the source.

[0017] 2. Cost savings It reduces the frequency of car washes contacting municipal desilting vehicles, saving expenses on sludge cleaning.

[0018] 3. Reduced energy consumption costs Equipped with a solar power generation device, which uses solar energy to power the equipment, reducing the energy consumption cost of equipment operation.

[0019] 4. Significant environmental benefits This eliminates the problem of sludge stinking and polluting the environment over time, protects the surrounding ecological environment, alleviates the risk of sludge clogging the municipal pipe network, and ensures the smooth operation of the urban drainage system.

[0020] 5. Water resource recycling It realizes the recycling of water resources, improves the efficiency of water resource utilization, and helps build a water-saving city.

[0021] 6. High degree of automation: The car wash circulating water sludge dewatering system is equipped with multiple sensors, including a sediment level meter, humidity meter, and sediment weighing instrument, capable of real-time tracking of relevant parameters. Based on the data collected by the sensors, the system automatically controls the operation of equipment such as the sand discharge solenoid valve, gas tank solenoid valve, and dewatering fan, achieving fully automated processing. This not only reduces manual operation and the impact of human factors on treatment results, but also improves treatment efficiency and ensures stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a schematic structural diagram of the car wash circulating water sludge dewatering device of the present invention; Figure 2 It is a structural schematic diagram of the multi-stage sedimentation tank of the present invention; Figure 3 A bottom view of the multi-stage sedimentation tank of the present invention; Figure 4 This is a schematic diagram of the structure of the frame in the multi-stage sedimentation tank of the present invention. Figure 5 This is a schematic diagram of the vertical state of the baffle plate of the present invention; Figure 6 This is a schematic diagram of the horizontal state of the baffle plate of the present invention; Figure 7 This is a schematic diagram of the structure inside the frame of the present invention; Figure 8 This is a schematic structural diagram of the pushing assembly of the present invention; Figure 9 This is a schematic structural diagram of the drive assembly of the present invention; Figure 10 for Figure 2 A is an enlarged schematic diagram.

[0023] In the figure: 100 multi-stage sedimentation tank, 110a first treatment box, 110a1 sedimentation tank inlet, 110a2 first intermediate pipe, 110a3 second intermediate pipe, 110b second treatment box, 110c third treatment box, 111 shell, 111a air pipe, 120 sediment level meter, 130 frame, 130a notch, 131 side plate, 132 front side plate, 133 rear side plate, 140 gas tank, 150 air outlet nozzle, 160 drive assembly, 161 reciprocating screw, 162 fan blade, 163 piston, 170 opening and closing assembly, 171 rotating part, 172 sealing block, 173 blocking plate, 173a anti-disturbance flow channel, 180 pushing assembly, 181 gear, 182 rack, 183 electric push rod, 184 telescopic sleeve, 185 connecting rod, 190 limiting assembly, 191 slide, 192 pressing rod, 200 sand settling and drying plate, 300 drainage pipe, 400 return pipe, 500 sand discharge pipe, 510 sand discharge solenoid valve, 520 sand discharge inclined pipe, 600 water collection well, 700 box, 800 solar power generation device. DETAILED DESCRIPTION

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0025] First embodiment like Figure 1 and Figure 2 、 Figure 6 As shown, the car wash circulating water sludge dewatering device includes: The multi-stage sedimentation tank 100 includes the first to Nth processing boxes 110a, 110b, 110c, a sediment level meter 120, a frame 130, a gas tank 140, and an air outlet nozzle 150. The first to Nth processing boxes 110a, 110b, and 110c are connected in sequence. The upper part of the side wall of the first processing box 110a is provided with a sedimentation tank inlet 110a1. The first to Nth processing boxes 110a, 110b, and 110c are respectively provided with sediment level meters 120, a frame 130, a gas tank 140, and an air outlet nozzle 150. A level meter 120 and a frame 130, the frame 130 being disposed at the lower portion of the processing boxes 110a, 110b, and 110c. An air flow channel is disposed in each of the frames 130. A gas outlet nozzle 150 is disposed on the lower surface of the frame 130. The gas outlet nozzle 150 is communicated with the air flow channel. The air flow channel in the frame 130 is also communicated with the gas tank 140, which is disposed on the outer side wall of the processing boxes 110a, 110b, and 110c. A sand settling and drying tray 200, the sand settling and drying tray 200 is located below the multi-stage sedimentation tank 100; A sand discharge pipe 500, one end of which is connected to the bottom of the first to Nth processing boxes 110a, 110b, and 110c, and the other end of which is connected to the top of the sand settling and drying tray 200. A sand discharge solenoid valve 510 is provided in the sand discharge pipe 500; A drainage pipe 300, one end of which is connected to the bottom of the sand settling and drying tray 200, and the other end of which is located in the water collection well 600; A water return pipe 400 , one end of which is located in the water collection well 600 , and the other end of which is connected to the sedimentation tank inlet 110 a 1 of the multi-stage sedimentation tank 100 .

[0026] The sump 600 is used to hold car wash wastewater. This wastewater is introduced into the multi-stage sedimentation tank 100 through the return pipe 400 and subsequently precipitated in the first to Nth treatment tanks 110a, 110b, and 110c, allowing the sludge in the wastewater to settle at the bottom of the multi-stage sedimentation tank 100. When the sediment level meter 120 within the multi-stage sedimentation tank 100 detects that the sludge has accumulated to a specified height, the sludge discharge solenoid valve 510 on the sludge discharge pipe 500 is controlled to open, allowing the sludge in the multi-stage sedimentation tank 100 to be discharged through the sludge pipe 500 to the sludge settling and drying tray 200. The sludge is dehydrated by the sludge settling and drying tray 200, and the separated water is then channeled into the sump 600 through the drain pipe 300 for recycling. The dehydrated, dried sludge remains in the sludge settling and drying tray 200 awaiting further processing. The dewatered sludge significantly reduces its moisture content, preventing high-moisture sludge from entering drainage pipes and effectively preventing prolonged sludge retention in drainage pipes and other locations. This reduces the risk of clogging municipal pipe networks and ensures the normal operation of urban drainage systems. This not only reduces the cost of municipal desilting vehicles, but also eases the difficulty and cost of subsequent sludge disposal, thereby improving the overall benefits of sludge treatment.

[0027] In addition, the gas tank 140 and the gas outlet nozzle 150 are coordinated, and the gas outlet nozzle 150 is set on the lower surface of the frame 130, so that the gas ejected from the gas outlet nozzle 150 can disturb the sludge deposited at the bottom of the multi-stage sedimentation tank 100, avoid sludge adhesion, and promote the complete discharge of sludge.

[0028] like Figure 2 As shown, the number of the processing boxes 110a, 110b, and 110c is multiple, that is, corresponding to the first processing box 110a, the second processing box 110b, and the third processing box 110c, respectively, and 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 the processing boxes 110a, 110b, and 110c can be three or more, and they can be arranged in an S shape, etc.

[0029] A sedimentation tank inlet 110a1 is defined at the upper portion of the left side wall of the first treatment tank 110a, which is connected to the return pipe 400. The right side wall of the first treatment tank 110a is connected to the second treatment tank 110b via a first intermediate pipe 110a2, which is located above each of the first and second treatment tanks 110a, 110b. Thus, car wash wastewater introduced through the return pipe 400 first enters the first treatment tank 110a through the sedimentation tank inlet 110a1, where sludge is first precipitated. 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 is subsequently precipitated. 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 above the second and third treatment tanks 110b, 110c, respectively. Specifically, when the car wash wastewater in the second treatment tank 110b reaches the height of the second intermediate pipe 110a3, the car wash wastewater in the second treatment tank 110b flows through the second intermediate pipe 110a3 into the third treatment tank 110c, where sludge sedimentation occurs. In this manner, sludge sedimentation occurs sequentially in the first, second, and third treatment tanks 110a, 110b, and 110c.

[0030] like Figure 2 and Figure 3 As shown, the lower parts of the first to Nth treatment boxes 110a, 110b, and 110c are respectively in the form of inverted pyramids, and the bottoms of the first to Nth treatment boxes 110a, 110b, and 110c are connected to the sand discharge pipe 500, so that the sludge converges along the side surfaces of the inverted pyramids to the bottoms of the first to Nth treatment boxes 110a, 110b, and 110c, and is discharged through the sand discharge pipe 500.

[0031] The upper portions of the first, second, and third processing boxes 110a, 110b, and 110c may be rectangular parallelepipeds, and the first, second, and third processing boxes 110a, 110b, and 110c are arranged in the width direction. Of course, the first, second, and third processing boxes 110a, 110b, and 110c may also be in other shapes.

[0032] refer to Figure 3The bottom of the second treatment box 110b is directly connected to the sand discharge pipe 500, and the bottoms of the first treatment box 110a and the third treatment box 110c are respectively connected to the sand discharge inclined pipe 520, and the sand discharge inclined pipe 520 is connected to the sand discharge pipe 500. In this way, the sludge in the first treatment box 110a and the third treatment box 110c flows into the sand discharge pipe 500 through the sand discharge inclined pipe 520 and is discharged from the sand discharge pipe 500.

[0033] Taking the first processing box 110a as an example, the sediment level meter 120 is vertically arranged on the inner wall of the first processing box 110a. Figure 4 The frame 130 is provided with a notch 130 a through which the sediment level meter 120 passes.

[0034] like Figure 2 and Figure 4 As shown, the frame 130 is disposed at the bottom of the first processing box 110a, specifically between the upper and lower portions of the first processing box 110a. The frame 130 matches the shape of the upper portion of the first processing box 110a, i.e., the frame 130 is rectangular. The frame 130 includes two side panels 131, a front panel 132, and a rear panel 133. The front panel 132 and the rear panel 133 are respectively connected between the two side panels 131.

[0035] Continue to refer Figure 6 The lower surface of the frame 130 is provided with an air outlet nozzle 150, and the lower surfaces of the side panels 131, the front side panels 132 and the rear side panels 133 are respectively provided with the air outlet nozzles 150. It can be seen that the lower surface of the frame 130 is evenly arranged with a plurality of the air outlet nozzles 150.

[0036] like Figures 5 to 7 As shown, the multi-stage sedimentation tank 100 further includes at least one opening and closing component 170, and the opening and closing component 170 includes: a plurality of rotating members 171 , wherein the rotating members 171 are rotatably disposed on the frame 130 ; A plurality of sealing blocks 172 are provided on the rotating member 171. a blocking plate 173 rotatably mounted on the frame 130 , with an anti-disturbance flow groove 173 a defined thereon, the anti-disturbance flow groove 173 a being adapted to the rotating member 171 and the sealing block 172 ; The blocking 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-turbine flow groove 173 a.

[0037] When the blocking plate 173 is in a horizontal state, the upper and lower spaces of the first treatment box 110a are separated by the horizontal blocking plate 173, so that the car wash wastewater in the upper space of the first treatment box 110a cannot enter the lower space of the first treatment box 110a. At this time, the air outlet nozzle 150 can blow high-pressure airflow to disturb the sludge, and when the sediment level meter 120 detects that the sludge has deposited to a specified height, the sand discharge solenoid valve 510 on the sand discharge pipe 500 is controlled to open to discharge the sludge to the sand settling and drying tray 200.

[0038] After the dredging is completed, the blocking plate 173 is rotated to a vertical state, so that the car wash wastewater passes through the gap between the rotating parts 171 and other components, and continues to precipitate sludge in the lower space of the first processing box 110a.

[0039] To further illustrate, when baffle plate 173 is horizontal, sealing block 172 and anti-disturbance groove 173a tightly close together, forming a sealed space. At this point, air outlet nozzles 150 on the lower surface of frame 130 release a high-pressure airflow to impact the deposited sediment. The tight closure between sealing block 172 and baffle plate 173 prevents air leakage, enhancing the impact of the high-pressure airflow and ensuring that sediment is directed into the sand discharge pipe 500.

[0040] To further explain, the air outlet nozzle 150 has two functions. First, it uses air jets to disturb the sludge below, allowing it to reach a cement-mixed state before discharge. This prevents the settled dry sludge from firmly adhering to the wall and making it difficult to discharge directly. Second, the exhaust device can increase the pressure at the bottom of the frame 130. Under the action of positive pressure, the cement-mixed sludge can be discharged more effectively.

[0041] refer to Figure 4 Each frame 130 includes a plurality of opening and closing assemblies 170, which are arranged along the length of the frame 130. The rotating member 171 in the opening and closing assembly 170 is located in front of the blocking plate 173. When the rotating member 171, which is in a vertical position, is rotated 90° forward, it rotates to a horizontal position. At this point, the rotating member 171 and its sealing block 172 are embedded in the anti-tampering flow groove 173a on the rotating member 171. When the rotating member 171, which is in a horizontal position, is rotated 90° backward, the rotating member 171 and its sealing block 172 are disengaged from the anti-tampering flow groove 173a, and the rotating member 171 is in a vertical position.

[0042] like Figure 7 and Figure 8As shown, the multi-stage sedimentation tank 100 further includes a pushing assembly 180, which is disposed inside the frame 130 and includes: Gear 181, the pins of the rotating member 171 and the blocking plate 173 are respectively sleeved with gears 181; a rack 182 , the rack 182 being engaged with the gear 181 ; The electric push rod 183 is transmission-connected to the rack 182 .

[0043] Each frame 130 is provided with a pushing assembly 180, which can simultaneously drive the rotation of multiple rotating members 171 on the frame 130. The electric push rod 183 drives the rack 182 to move, thereby driving the gear 181 to rotate. The gear 181 drives the rotating member 171 and the blocking plate 173 connected thereto to rotate.

[0044] refer to Figure 5 The sealing block 172 is a plate-like structure that is sleeved onto the rotating member 171. Multiple sealing blocks 172 are spaced apart 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, creating more space for sludge to settle downward. When the rotating member 171 is in a horizontal position, the sealing blocks 172 are arranged horizontally, and in this case, the sealing blocks 172 are arranged horizontally within the anti-turbine flow groove 173a.

[0045] Before rotation, the top and bottom of the sealing block 172 are rotated into horizontal circumferential side walls. During the water sedimentation process, some sludge may settle to the top of the sealing block 172. However, after the sealing block 172 is rotated, 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 separate from the end face and be converted into a horizontal circumferential side wall. Through this conversion action, the circumferential side wall removes the settled sludge and has a good sealing and matching environment.

[0046] Since the rotating member 171 and the blocking plate 173 rotate synchronously, when the rotating member 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 sealing block 172 on the rotating workpiece 171 and the anti-disturbance flow groove 173a can separate in precise synchronization.

[0047] like Figure 7As shown, the rotating member 171 is connected to gears 181 at both ends, and the blocking plate 173 is connected to pins at both ends. The pins at both ends of the blocking plate 173 are connected to gears 181. Furthermore, racks 182 are provided at both ends of the rotating member 171 and the blocking plate 173, respectively. These 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 member 171 via a connecting rod 185. When the electric push rod 183 pushes and pulls the connecting rod 185, the connecting rod drives the two racks 182 to move, thereby rotating the meshed gears 181, which in turn drives the rotating member 171 and the blocking plate 173. By connecting the gears 181 and other components at both ends of the rotating member 171 and the blocking plate 173, the rotational stability of the rotating member 171 and the blocking plate 173 is improved.

[0048] refer to Figure 7 The push assembly 180 further includes a telescopic sleeve 184, which is connected to the connecting rod 185. Both the telescopic sleeve 184 and the electric push rod 183 are connected to the connecting rod 185. This structural design allows the telescopic sleeve 184 to work in tandem with the electric push rod 183 when the connecting rod 185 is driven. This effectively improves the stability of the rotation of the rotating member 171 and the blocking plate 173, ensuring smooth and reliable operation of the opening and closing assembly 170.

[0049] Continue to refer Figure 7 The two ends of the rotating member 171 are respectively inserted into the two side plates 131 and connected to the gear 181. The pins at both ends of the blocking plate 173 are respectively inserted into the two side plates 131 and connected to the gear 181. That is, the gear 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.

[0050] like Figure 5 and 10 As shown, the multi-stage sedimentation tank 100 further includes a limiting assembly 190, the number of the limiting assembly 190 is equal to the number of the blocking plates 173, and the limiting assembly 190 includes: A chute 191 is provided on the inner side of the side plate 131 of the frame 130 ; The pressing rod 192 slides in the sliding groove 191 and is connected to the rack 182. The pressing rod 192 moves with the rack 182 and can be pressed against the top of the blocking plate 173 in a horizontal state.

[0051] The pressing rod 192 is arranged on the rack 182, so the pressing rod 192 moves along with the rack 182. The chute 191 is used for the pressing rod 192 to pass through. When the blocking plate 173 is in a horizontal state, the pressing rod 192 is just above the blocking plate 173 in a horizontal state, and applies a pressing force to the blocking plate 173, thereby ensuring that the blocking plate 173 is completely closed. At this time, the outer edge of the blocking plate 173 is kept in close contact with the frame 130, effectively preventing the leakage of sediment and the loosening of the blocking plate 173, and ensuring the reliable partition of the internal space of the multi-stage sedimentation tank 100. When the blocking plate 173 rotates from a horizontal state to a vertical state, the pressing rod 192 will withdraw backward along the chute 191, releasing the pressing state of the blocking plate 173 and providing space for the rotation of the blocking plate 173.

[0052] In order to avoid mud and sand obstruction in the mechanical operating area within the chute 191 , a flexible sealing barrier is preferably provided in the chute 191 .

[0053] like Figures 2 to 4 As shown, the gas tank 140 is arranged outside the first processing box 110a, the second processing box 110b and the third processing box 110c, specifically at the front side of the first processing box 110a, the second processing box 110b and the third processing box 110c.

[0054] Gas tank 140 is equipped with three outlets, which are connected to the airflow channels within the first, second, and third processing boxes 110a, 110b, and 110c, respectively. High-pressure gas stored in gas tank 140 is delivered to the corresponding processing boxes through the three outlets via a compressor. Furthermore, a solenoid valve is installed at each outlet. Its primary function is to control the flow of gas, enabling precise regulation of gas delivery.

[0055] During the dredging process, the gas tank solenoid valve ensures that the airflow can only flow one-way from the gas tank 140 to the air flow channels in each processing box through control logic, effectively preventing the backflow of sediment caused by reverse flow of airflow.

[0056] The solenoid valves of the gas tanks at the three gas outlet ends can individually control the opening and closing of each gas outlet end according to the detection data of the sediment level meter 120.

[0057] like Figure 2 、 Figure 9 As shown, the multi-stage sedimentation tank 100 further includes a drive assembly 160, and the drive assembly 160 includes: A reciprocating screw 161 is rotatably disposed within a housing 111, which is fixed to the inner wall of the first processing box 110a. One end of the housing 111 is connected to the gas tank 140 via an air pipe 111a. The output shaft of the reciprocating screw 161 extends from the other end of the housing 111. A one-way valve is provided on the air pipe 111a. 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; The piston 163 is located in the housing 111 and is limited by a limit bar in the housing 111 so as to be movable along the length direction of the housing 111 . The piston 163 is threadedly connected to the reciprocating screw 161 .

[0058] When the car wash wastewater flows into the first treatment box 110a from the sedimentation tank inlet 110a1, the flow of wastewater will drive the fan blades 162 to rotate. During the rotation of the fan blades 162, through the connection with the output shaft of the reciprocating screw 161, the piston 163 is driven to move along the length direction of the shell 111. During the movement of the piston 163, with the help of the one-way valve, the external air is compressed into the gas tank 140 for storage. Since the direction and magnitude of the force exerted by the car wash wastewater on the fan 162 will change, the fan blades 162 will produce forward and reverse rotation, thereby driving the piston 163 to reciprocate in the length direction of the shell 111, realizing a continuous gas compression and storage process, and providing air source support for subsequent dredging operations of the multi-stage sedimentation tank 100.

[0059] It should be noted that the housing 111 is also provided with an air inlet, communicating with the outside world. At a certain stage in the movement of the piston 163, it moves away from the air inlet, causing the internal space of the housing 111 to expand and the air pressure to decrease. At this point, under the influence of atmospheric pressure, the outside air smoothly enters the housing 111 through the air inlet. As the piston 163 reverses its motion, moving closer to the air inlet, the internal space of the housing 111 gradually decreases, the air is continuously compressed, and the air pressure subsequently increases. When the compressed air reaches a certain pressure, it enters the gas tank 140 through the air pipe 111a connected to the housing 111 for storage.

[0060] like Figure 1 As shown, the car wash circulating water sludge dewatering device also includes: Box 700, the multi-stage sedimentation tank 100 is arranged inside the box 700; A solar power generation device 800 is provided on the top of the housing 700 and provides electrical energy for the multi-stage sedimentation tank 100 and the sand drying tray 200 .

[0061] Taking the multi-stage sedimentation tank 100 as an example, the solar power generation device 800 provides power to the electric push rod 183, the compressor, etc. When the battery power level of the solar power generation device 800 drops below 20%, it automatically switches to mains power supply. Therefore, this application can achieve a closed-loop operation of the entire process from wastewater sedimentation, sludge discharge, drying and dehydration to water resource reuse.

[0062] 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 tank bottom. The installation of the sediment level meter 120 enables precise monitoring of sludge deposition height, providing a reliable basis for automated sediment removal. The rapid response of the sediment removal solenoid valve 510 ensures timely and accurate sediment removal, preventing excessive sludge accumulation within the tank. The gas tank 140 is used in conjunction with the gas outlet nozzle 150, which is mounted on the lower surface of the frame 130. The gas ejected from the gas outlet nozzle 150 disturbs the sludge deposited at the bottom of the multi-stage sedimentation tank 100. This disturbance helps break up agglomerates between sludge particles, promoting further sedimentation and improving sedimentation efficiency.

[0063] Second embodiment The present invention also provides a method for using the car wash circulating water sludge dewatering device of the first embodiment, comprising the following steps: Step 1: Wastewater Collection and Sedimentation. The car wash wastewater in the water collection well 600 is led to the multi-stage sedimentation tank 100 via the return pipe 400. The car wash wastewater is sequentially passed through the first to Nth treatment tanks 110a, 110b, and 110c in the multi-stage sedimentation tank 100 for sedimentation, so that the sludge in the car wash wastewater settles to the bottom of the first to Nth treatment tanks 110a, 110b, and 110c, respectively. Step 2: Sludge discharge. When the sediment level meter 120 in each of the first to Nth processing boxes 110a, 110b, and 110c detects that the sludge in each of the first to Nth processing boxes 110a, 110b, and 110c has reached a specified height, the sand discharge solenoid valve 510 on the sand discharge pipe 500 is controlled to open, allowing the sludge in each of the first to Nth processing boxes 110a, 110b, and 110c to be discharged through the sand pipe 500 to the sand drying tray 200. Step 3: Sludge drying: The sand settling and drying tray 200 dehydrates the sludge in the sand settling and drying tray 200 .

[0064] Step 4: Water treatment: The separated water is led to the water collection well 600 through the drainage pipe 300.

[0065] In step one, the blocking plate 173 is in a vertical state, and the car wash wastewater located in the upper space of the first to Nth treatment boxes 110a, 110b, and 110c can enter the lower space of the first to Nth treatment boxes 110a, 110b, and 110c through the gap between the rotating parts 171 and undergo sludge sedimentation, while the clean water can be discharged from the upper part of the first to Nth treatment boxes 110a, 110b, and 110c.

[0066] In step 2, the pushing assembly 180 is used to drive the blocking plate 173 to rotate to a horizontal state. At this time, the air outlet nozzle 150 blows high-pressure air to disturb the sludge. When the sediment level meter 120 detects that the sludge has deposited to a specified height, the sand discharge solenoid valve 510 on the sand discharge pipe 500 is controlled to open and discharge the sludge to the sand settling and drying tray 200.

[0067] In step three, the humidity meter in the sedimentation and drying tray 200 monitors the sludge humidity in real time, and the dehydration fan automatically adjusts its working state according to the data fed back by the humidity meter to dehydrate the sludge. During the dehydration process, the sediment 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 is reduced to a certain value), it indicates that the sludge drying is completed.

[0068] In step 4, the water separated by the sand settling and drying tray 200 flows back to the water collection well 600 through the drainage pipe 300 and can be used again for car washing or other suitable purposes, thereby realizing the recycling of water resources.

[0069] After step 4, the method further includes: Step 5: Drying sludge treatment. After drying, the volume of the sludge is greatly reduced. At this time, the dried sludge can be cleaned out from the sand settling and drying tray 200 manually or with the help of simple equipment for subsequent disposal, such as landfill, incineration, or as raw material for construction materials.

[0070] 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 contents of the present invention and implement them accordingly. The scope of the patent application of the present invention cannot be limited by these embodiments alone. That is, any equivalent changes or modifications made according to the spirit disclosed by 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), comprising first to Nth treatment boxes (110a, 110b, 110c), a sediment level meter (120), a frame (130), a gas tank (140), and an air outlet nozzle (150), wherein the first to Nth treatment boxes (110a, 110b, 110c) are sequentially connected, a sedimentation tank inlet (110a1) is provided on the upper portion of the side wall of the first treatment box (110a), and sediment level meters (120) are provided in the first to Nth treatment boxes (110a, 110b, 110c). An instrument (120) and a frame (130), wherein the frame (130) is arranged at the lower part of the processing box (110a, 110b, 110c), an air flow channel is respectively arranged in each of the frames (130), an air outlet nozzle (150) is arranged on the lower surface of the frame (130), the air outlet nozzle (150) is communicated with the air flow channel, and the air flow channel in the frame (130) is also communicated with the gas tank (140), and the gas tank (140) is arranged on the outer wall of the processing box (110a, 110b, 110c); A sand settling and drying tray (200), the sand settling and drying tray (200) being located below the multi-stage sedimentation tank (100); a sand discharge pipe (500), one end of the sand discharge pipe (500) being in communication with the bottoms of the first to Nth processing boxes (110a, 110b, 110c), the other end of the sand discharge pipe (500) being in communication with the top of the sand settling and drying tray (200), and a sand discharge solenoid valve (510) being provided in the sand discharge pipe (500); a drainage pipe (300), one end of the drainage pipe (300) being in communication with the bottom of the sedimentation and drying tray (200), and the other end of the drainage pipe (300) being located in the water collection well (600); A water return pipe (400), one end of which is located in the water collection well (600), and the other end of which is connected to the sedimentation tank inlet (110a1) of the multi-stage sedimentation tank (100).

2. The car wash circulating water sludge dehydration device according to claim 1, characterized in that: The multi-stage sedimentation tank (100) further comprises at least one opening and closing component (170), wherein the opening and closing component (170) comprises: a plurality of rotating members (171), wherein the rotating members (171) are rotatably disposed on the frame (130); a plurality of sealing blocks (172), wherein the sealing blocks (172) are arranged on the rotating member (171); a blocking plate (173), the blocking plate (173) being rotatably disposed on the frame (130); an anti-disturbance flow groove (173a) being formed on the blocking plate (173), the anti-disturbance flow groove (173a) being respectively adapted to the rotating member (171) and the sealing block (172); The blocking 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-turbine flow groove (173a).

3. The car wash circulating water sludge dehydration device according to claim 2, characterized in that: The multi-stage sedimentation tank (100) further includes a pushing assembly (180), wherein the pushing assembly (180) is arranged inside the frame (130), and the pushing assembly (180) includes: A gear (181), wherein the pin of the blocking plate (173) is sleeved with the gear (181); a rack (182), the rack (182) being meshed with the gear (181); An electric push rod (183), the electric push rod (183) is transmission-connected to the rack (182).

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

5. The car wash circulating water sludge dewatering device according to claim 4, characterized in that: The framework (130) comprises: Two side plates (131), the two side plates (131) are arranged opposite to each other, the two ends of the rotating member (171) are respectively passed through the inside of the two side plates (131) and are respectively connected to the gears (181), the pins at the two ends of the blocking plate (173) are respectively passed through the inside of the two side plates (131) and are respectively connected to the gears (181), and a rack (182) is respectively provided in each side plate (131); A front side plate (132), the front side plate (132) being connected to the two side plates (131), the electric push rod (183) being provided in the front side plate (132), the electric push rod (183) being connected to the racks (182) in the two side plates (131) via a connecting rod (185); A rear side plate (133), wherein the rear side plate (133) is connected to the two side plates (131).

6. The car wash circulating water sludge dewatering device according to claim 5, characterized in that: The pushing assembly (180) further includes: A telescopic sleeve rod (184), the telescopic sleeve rod (184) is arranged in the front side plate (132) and connected to the connecting rod (185).

7. 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 assembly (190), the number of the limiting assemblies (190) being equal to the number of the blocking plates (173), and the limiting assembly (190) including: A chute (191), the chute (191) being provided on the inner side of the side plate (131) of the frame (130); A pressing rod (192) slides in the sliding groove (191) and is connected to the rack (182). The pressing rod (192) moves along with the rack (182) and can be pressed against the top of the blocking plate (173) in a horizontal state.

8. 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), wherein the drive assembly (160) includes: a reciprocating screw (161), the reciprocating screw (161) being rotatably disposed within a housing (111), the housing (111) being fixed to the inner wall of the first processing box (110a), one end of the housing (111) being connected to the gas tank (140) via an air pipe (111a), and an output shaft of the reciprocating screw (161) passing through the other end of the housing (111) in the longitudinal direction; a fan blade (162), the fan blade (162) being located inside the first processing box (110a) and opposite to the sedimentation tank inlet (110a1), and the fan blade (162) being connected to the output shaft of the reciprocating screw (161); A piston (163) is located in the housing (111) and is limited by a limit bar in the housing (111) so as to be movable along the length direction of the housing (111). The piston (163) is screwed to the reciprocating screw (161).

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

10. A method for using the car wash circulating water sludge dewatering device according to any one of claims 1 to 9, characterized in that: The following steps are involved: The car wash sewage in the water collection well (600) is led to the multi-stage sedimentation tank (100) by using a return pipe (400), and the car wash sewage is sequentially passed through the first to Nth treatment tanks (110a, 110b, 110c) in the multi-stage sedimentation tank (100) for sedimentation, so that the sludge in the car wash sewage settles to the bottom of the first to Nth treatment tanks (110a, 110b, 110c) respectively; When the sediment level meter (120) in the first to Nth processing boxes (110a, 110b, 110c) detects that the sludge in the first to Nth processing boxes (110a, 110b, 110c) reaches a specified height, the sand discharge solenoid valve (510) on the sand discharge pipe (500) is controlled to open, so that the sludge in the first to Nth processing boxes (110a, 110b, 110c) is discharged to the sand settling and drying tray (200) through the sand pipe (500); The desilting and drying tray (200) performs dehydration treatment on the sludge in the desilting and drying tray (200); The separated water is led to the water collection well (600) through the drainage pipe (300).

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