A car washing water treatment device

Abstract

This invention relates to the field of car wash water treatment technology. The invention provides a car wash water treatment device, comprising a wash bay, a sedimentation tank, a wastewater tank, a cyclone separator, and a clear water tank. The wash bay is used to accommodate cars, wash and clean them, and collect the wash water. The sedimentation tank is connected to the wash bay and is used to accommodate the wash water discharged from the wash bay and to settle impurities in the wash water. The sedimentation tank has an overflow outlet. The wastewater tank is connected to the overflow outlet of the sedimentation tank and can accommodate the wash water overflowing from the overflow outlet. The cyclone separator is connected between the wastewater tank and the clear water tank, and can separate the wash water in the wastewater tank into clear water and transport the clear water to the clear water tank. This technical solution solves the technical problems of poor water purification effect and high energy consumption in the sedimentation process of related car wash water treatment devices.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of car wash water treatment technology, specifically, to a car wash water treatment device. Background Technology

[0002] Currently, with the increasing awareness of environmental protection, many industrial enterprises, especially steel companies, have placed higher demands on the environmental management of their factory areas. Unwashed vehicles are strictly prohibited from driving on roads within and outside the factory area to prevent secondary pollution.

[0003] However, the water treatment processes used by most steel mills for car washes are still relatively outdated: wastewater is simply settled in a horizontal flow tank before being recycled, which makes it difficult to effectively purify the water quality, resulting in unsatisfactory cleaning results. The problem of vehicles carrying mud onto the road still exists, which in turn causes road dust and environmental pollution.

[0004] At the same time, the demand for water for car washing is increasing from various factories, and the requirements for water quality are becoming more stringent. In order to control costs, some companies even adopt arbitrary discharge methods, which not only fail to meet national and local emission standards, but also violate environmental protection policies. At the same time, they still need to replenish large amounts of fresh water, resulting in serious waste of water resources. Summary of the Invention

[0005] To overcome the above-mentioned defects, embodiments of the present invention provide a car wash water treatment device, which solves the technical problems of poor water purification effect and high energy consumption in the sludge removal process of related art car wash water treatment devices.

[0006] According to one aspect, at least one embodiment of the present invention provides a car wash water treatment device, comprising:

[0007] A car wash is a facility used to house cars, wash and clean them, and collect the wash water.

[0008] A sedimentation tank, connected to the car wash workshop, is used to contain the car wash water discharged from the car wash workshop and to settle the impurities in the car wash water. The sedimentation tank has an overflow outlet.

[0009] The sewage tank is connected to the overflow outlet of the sedimentation tank, and the sewage tank is capable of accommodating the car wash water overflowing from the overflow outlet.

[0010] A cyclone grit chamber is connected between the sewage tank and the clear water tank. The cyclone grit chamber can separate the car wash water in the sewage tank into clear water and transport the clear water to the clear water tank.

[0011] For example, at least one embodiment of this disclosure provides a car wash water treatment device.

[0012] The sedimentation tank is connected to the washing workshop through a conveying pipe. The conveying pipe has an input end and an output end. The output end extends to the center of the bottom of the sedimentation tank and is used to convey car wash water into the sedimentation tank and cause impurities to move towards the bottom edge of the sedimentation tank under the action of the water flow.

[0013] For example, at least one embodiment of this disclosure provides a car wash water treatment device.

[0014] The conveying pipe is equipped with a swing opening and closing assembly, which is configured to swing open after a preset amount of car wash water has accumulated in the conveying pipe, and swing close after the accumulated car wash water has been discharged.

[0015] For example, at least one embodiment of this disclosure provides a car wash water treatment device, wherein the swing opening and closing assembly includes:

[0016] A swing shaft is rotatably disposed inside the conveying pipe and extends horizontally. The upper and lower sides of the swing shaft are respectively provided with a first magnetic attractor and a swing plate. The top wall of the conveying pipe is provided with a second magnetic attractor that can be attracted to the first magnetic attractor.

[0017] The conveying pipeline is arranged horizontally or inclined. The swing opening and closing assembly has an open state and a closed state. When the swing opening and closing assembly is in the open state, the first magnetic suction member and the second magnetic suction member are separated and the swing plate is in an inclined state. When the swing opening and closing assembly is in the closed state, the first magnetic suction member and the second magnetic suction member are attracted together and the swing plate is in a vertical state.

[0018] For example, at least one embodiment of this disclosure provides a car wash water treatment device.

[0019] The bottom of the sedimentation tank has an inclined left guide plane and a right guide plane. The left guide plane and the right guide plane are symmetrical and have an intersection line. The intersection of the left guide plane and the right guide plane bulges upward. The output end is located above the intersection line of the left guide plane and the right guide plane.

[0020] For example, at least one embodiment of this disclosure provides a car wash water treatment device.

[0021] The output end has a rectangular cross-section, with the long side of the rectangle extending along the intersection of the left and right guide planes.

[0022] For example, at least one embodiment of this disclosure provides a car wash water treatment device.

[0023] The cross-sectional area of ​​the output end is smaller than that of the other parts of the conveying pipe, so as to increase the flow rate of the car wash water when it passes through the output end.

[0024] For example, at least one embodiment of this disclosure provides a car wash water treatment device.

[0025] The intersection of the left guide plane and the right guide plane is upstream, and the area away from the intersection is downstream;

[0026] The bottom of the sedimentation tank has impurity collection troughs located downstream of both the left and right guide planes.

[0027] For example, a car wash water treatment device provided in at least one embodiment of this disclosure further includes:

[0028] A slag-pushing assembly is disposed within the slag tank. The slag-pushing assembly is used to push impurities located on the left guide plane and the right guide plane into the impurity collection tank.

[0029] For example, at least one embodiment of this disclosure provides a car wash water treatment device, wherein the sludge pushing assembly includes:

[0030] A floating plate is slidably installed in the sedimentation tank. The floating plate floats on the water surface and can move up and down with the rise and fall of the water surface.

[0031] A push rod is hinged at its upper end to the float plate and connected to a push plate at its lower end. There are two push rods and two push plates, which are arranged in a one-to-one correspondence. The two push plates are located on the left guide plane and the right guide plane, respectively. The push rod can drive the push plate to move along the left guide plane or the right guide plane under the sliding action of the float plate to push impurities into the impurity collection tank.

[0032] The beneficial effects of the embodiments of the present invention are as follows:

[0033] In this invention, the car wash workshop collects car wash water and transports it to a settling tank via a drainage channel. The settling tank settles lumpy or flaky impurities (such as iron oxide scale) in the car wash water, providing initial purification and reducing the load on subsequent treatment processes. An overflow outlet in the settling tank allows the pre-sedimented car wash water to overflow into a wastewater tank, preventing insufficiently settled impurities from entering subsequent treatment stages. The wastewater tank contains the car wash water overflowing from the settling tank and pumps it to a hydrocyclone separator. The hydrocyclone separator uses centrifugal force to efficiently separate fine sand particles and other impurities from the car wash water, further purifying the water. A clear water tank collects the clear water separated by the hydrocyclone separator and recycles it for car washing in the car wash workshop, achieving water recycling, reducing the need for fresh water replenishment, and conserving water resources.

[0034] The grading process using a sedimentation tank and a cyclone grit chamber first removes lumpy or flaky impurities, then separates fine sand particles, improving the purification effect of car wash water. This ensures that the water quality after washing meets car wash requirements, preventing vehicles from carrying mud onto the road and reducing road dust and environmental pollution. The various components are rationally connected through pipelines to form a complete car wash water treatment system, automating the collection, sedimentation, separation, and recycling of car wash water, improving treatment efficiency and reducing manual operation costs. Simultaneously, this device avoids the problem of indiscriminate discharge of car wash water, meeting national and local emission standards and complying with environmental protection policies. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0036] Figure 1 This is a schematic diagram of the planar structure of a car wash water treatment device according to one embodiment of the present invention;

[0037] Figure 2 for Figure 1 A three-dimensional structural diagram of the sedimentation tank in the embodiment;

[0038] Figure 3 for Figure 2 A top view of the structure in the embodiment;

[0039] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of AA;

[0040] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of BB;

[0041] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point C.

[0042] In the diagram: 1-washing workshop, 2-sludge tank, 21-conveying pipeline, 211-input end, 212-output end, 22-swing opening and closing assembly, 221-swing shaft, 222-first magnetic suction component, 223-second magnetic suction component, 224-swing plate, 23-left guide plane, 24-right guide plane, 3-sewage tank, 4-clear water tank, 5-cyclone grit chamber, 6-impurity collection tank, 7-sludge pushing assembly, 71-float plate, 72-push rod, 73-push plate. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0044] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0045] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0048] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] like Figures 1-6The diagram illustrates a car wash water treatment device according to an embodiment of the present invention, comprising a wash bay 1, a sedimentation tank 2, a wastewater tank 3, a cyclone separator 5, and a clean water tank 4. The wash bay 1 (containing a spray system, such as nozzles) is used to wash and clean cars and collect wash water. A drainage channel is provided at its bottom, which connects to the sedimentation tank 2, allowing wash water to flow into the sedimentation tank 2 when cars are washed in the wash bay 1. The sedimentation tank 2 has an overflow outlet connected to the wastewater tank 3. When the wash water in the sedimentation tank 2 reaches a certain level, it overflows into the wastewater tank 3 through the overflow outlet. The wastewater inlet of the cyclone separator 5 is connected to the wastewater tank 3 via a pipe, and the clean water outlet is connected to the clean water tank 4 via a pipe. This allows for the separation of the wash water in the wastewater tank 3, with the separated clean water being transported to the clean water tank 4, while the separated impurities are periodically discharged.

[0050] The floor of the car wash workshop 1 is equipped with a sloping guide surface, the lowest point of which connects to the inlet of the drainage channel to ensure smooth flow of car wash water. The outlet of the drainage channel of the sedimentation tank 2 is located at the top of the sedimentation tank 2, with the overflow outlet situated on the upper side wall of the sedimentation tank 2, higher than the area within the sedimentation tank 2 used for settling lumpy or flaky impurities. This ensures that the car wash water, after initial settling, can flow into the sewage tank 3 through the overflow outlet. A water pump is installed on the pipe between the sewage tank 3 and the cyclone separator 5 to transport the car wash water from the sewage tank 3 to the cyclone separator 5. The cyclone separator 5 uses centrifugal force to separate the car wash water. Denser sand particles and other impurities are thrown against the wall and move downwards, exiting through the sand outlet, while less dense clean water flows out from the clean water outlet and enters the clean water tank 4. The clean water tank 4 is connected to the car wash workshop 1 via a pipe, and the clean water in the clean water tank 4 can be recycled for car washing.

[0051] In this embodiment, the car wash water treatment device collects car wash water in the wash workshop 1 and transports it to the sedimentation tank 2 through a drainage channel. The sedimentation tank 2 settles lumpy or flaky impurities (such as iron oxide scale) in the car wash water, initially purifying the water and reducing the load on subsequent treatment. The overflow port of the sedimentation tank 2 allows the car wash water that has undergone initial sedimentation to overflow into the sewage tank 3, preventing insufficiently settled impurities from entering the subsequent treatment stages. The sewage tank 3 contains the car wash water overflowing from the sedimentation tank 2 and pumps it to the cyclone separator 5. The cyclone separator 5 uses centrifugal force to efficiently separate the car wash water, separating fine sand particles and other impurities from the water, further purifying the water quality. The clear water tank 4 collects the clear water separated by the cyclone separator 5 and recycles it for car washing in the wash workshop 1, realizing the recycling of car wash water, reducing the need for fresh water replenishment, and saving water resources.

[0052] The grading process of sedimentation tank 2 and cyclone sand separator 5 first removes lumpy or flaky impurities, then separates fine sand particles, improving the purification effect of car wash water. This ensures that the water quality after washing meets car wash requirements, preventing vehicles from carrying mud onto the road and reducing road dust and environmental pollution. The various components are rationally connected by pipelines to form a complete car wash water treatment system, realizing an automated process for the collection, sedimentation, separation, and recycling of car wash water, improving treatment efficiency and reducing manual operation costs. At the same time, this device avoids the problem of indiscriminate discharge of car wash water, meeting national and local emission standards and complying with environmental protection policies.

[0053] Furthermore, such as Figure 2 As shown, the sedimentation tank 2 is equipped with a conveying pipe 21, the inlet end 211 of which is connected to the drainage channel at the bottom of the washing workshop 1, and the outlet end 212 is inclined downwards towards the middle of the bottom of the sedimentation tank 2, and the height of the outlet end 212 is lower than that of the inlet end 211. When the car wash water is discharged from the outlet end 212 through the conveying pipe 21, the water flow direction forms an impact angle with the bottom of the tank, generating a scouring force that spreads outwards in the middle of the bottom of the tank, causing blocky or flaky impurities to move towards the edge of the bottom of the tank.

[0054] In this embodiment, the design of the output end 212 facing the middle of the pool bottom allows the car wash water to form a directional flushing flow when entering the sedimentation tank 2. The water flow propels blocky or flaky impurities to migrate towards the edge of the pool bottom, preventing impurities from accumulating in the middle of the pool bottom, improving the impurity settling efficiency of the sedimentation tank 2, and facilitating subsequent manual cleaning operations.

[0055] Furthermore, refer to Figure 5 and Figure 6As shown, a swing opening and closing assembly 22 (located above the overflow port) is installed inside the conveying pipe 21. This assembly includes a horizontally rotatable swing shaft 221 (both ends of the swing shaft 221 are rotatably connected to the inner wall of the conveying pipe 21), a first magnetic suction member 222 is fixed on the upper side of the swing shaft 221, a second magnetic suction member 223 is correspondingly provided on the top wall of the conveying pipe 21, and a swing plate 224 is connected to the lower side of the swing shaft 221 (the swing plate 224 is fixedly installed on the swing shaft 221, and the swing of the swing plate 224 can drive the swing shaft 221 to rotate, and realize the first magnetic suction member 222 to swing accordingly). When the car wash water discharged from the car wash workshop 1 accumulates in the conveying pipe 21 to a set level (which can be determined based on the attraction of the first magnetic component 222 and the second magnetic component 223 or the distance from the first magnetic component to the swing shaft 221), the force of the water flow on the swing plate 224 (the resultant force of the impact force generated by the water flow and the pushing force generated by the water flow accumulated on the upstream side of the swing plate 224) overcomes the attraction force of the first magnetic component 222 and the second magnetic component 223, causing the swing plate 224 to rotate around the swing shaft 221 to an inclined state. The conveying pipe 21 is then opened and the car wash water is quickly discharged. When the car wash water is discharged and the water level drops, the first magnetic component 222 and the second magnetic component 223 re-attract each other, the swing plate 224 returns to a vertical state, and the conveying pipe 21 is closed.

[0056] In this embodiment, the swing-opening and closing component 22 automatically opens and closes the conveying pipe 21 via liquid level triggering, allowing the car wash water to enter the sedimentation tank 2 intermittently. After accumulating a certain amount of car wash water, it is discharged in a concentrated manner, forming a powerful water flow that effectively flushes the bottom of the tank, improving the migration effect of impurities. After discharge, it automatically closes to ensure that there is sufficient time for impurities to settle in the sedimentation tank 2, avoiding continuous water intake from affecting the settling efficiency and achieving a dynamic balance between flushing and settling processes.

[0057] Furthermore, refer to Figure 5 and Figure 6 As shown, the conveying pipe 21 is arranged horizontally or inclined, and the swing opening and closing assembly 22 has two working states: when the swing plate 224 is in the vertical state, the first magnetic attractor 222 and the second magnetic attractor 223 are attracted, the conveying pipe 21 is closed, and the car wash water flow is prevented; when the car wash water accumulates to the set level, the swing plate 224 is impacted by the water flow and rotates around the swing axis 221 to the inclined state, the conveying pipe 21 is opened, and the car wash water is discharged at high speed through the output end 212. The inclined conveying pipe 21 can enhance the impact force of the water flow on the swing plate 224, ensuring reliable triggering of the opening and closing action.

[0058] In this embodiment, the magnetic attraction structure and the swing plate 224 work together to achieve stable switching between the open and closed states of the conveying pipe 21. The magnetic fixation in the vertical state prevents dripping or low-flow leakage of the wash water, ensuring the settling effect of the sedimentation tank 2 during non-discharge periods; the high-flow discharge in the tilted open state creates a powerful flush, improving the efficiency of impurity removal. This structure requires no additional power drive, relying solely on the energy of the water flow itself for automatic control, reducing energy consumption and maintenance costs.

[0059] Furthermore, refer to Figure 3 and Figure 4 As shown, the bottom of sedimentation tank 2 consists of a left guide plane 23 and a right guide plane 24, which are symmetrically arranged along the center line of the tank. The intersection point protrudes upward to form a guide ridge, and the output end 212 is located directly above the guide ridge. The left guide plane 23 and the right guide plane 24 are inclined towards the two side walls of the tank, forming a "V"-shaped guide structure. After the washing water is discharged from the output end 212, it diffuses along the guide ridge towards the two guide planes, carrying blocky or flaky impurities along the inclined planes towards the bottom edge of the tank.

[0060] In this embodiment, the inclined intersection design of the left guide plane 23 and the right guide plane 24, combined with the central impact position of the output end 212, causes the car wash water to form a bidirectional diffusion flow at the bottom of the pool, guiding impurities to move towards the two sides along the guide planes. This structure utilizes the synergistic effect of gravity and water flow to automatically guide impurities to the edge area of ​​the pool bottom, preventing impurities from lingering in the middle of the pool bottom, significantly improving the sedimentation and collection efficiency of impurities in the sedimentation tank 2, and creating conditions for subsequent centralized treatment of impurities.

[0061] Furthermore, refer to Figure 5 As shown, the output end 212 is designed as a strip-shaped opening, and its length direction is consistent with the guide ridge of the intersection of the left guide plane 23 and the right guide plane 24. The strip-shaped output end 212 is arranged along the entire length of the guide ridge, so that when the car wash water is discharged from the output end 212, it forms a uniform water curtain that covers the entire guide ridge area, ensuring that the water flow thoroughly washes the bottom guide plane of the pool.

[0062] In this embodiment, the design of the strip-shaped output end 212 expands the scouring range of the water flow, allowing the car wash water to act evenly on the entire guiding area of ​​the left guiding plane 23 and the right guiding plane 24, avoiding localized scouring blind spots. The water flow direction arranged along the guiding ridge is consistent with the inclination direction of the guiding plane, enhancing the water flow's ability to carry impurities, enabling impurities to move more efficiently to both sides along the guiding plane, further improving the uniformity of impurity distribution and collection effect in the sedimentation tank 2.

[0063] Furthermore, the cross-sectional area of ​​the output end 212 is smaller than that of the main body of the conveying pipe 21, forming a constricted structure. When the car wash water passes through the output end 212, the flow velocity increases significantly due to the reduced cross-sectional area, forming a high-speed jet and enhancing the scouring force on the bottom of the sedimentation tank 2.

[0064] In this embodiment, the constricted-mouth design of the output end 212 increases the water flow velocity through changes in the fluid cross-sectional area, causing the car wash water to impact the bottom of the pool in the form of a high-speed jet. This effectively removes blocky or flaky impurities attached to the bottom of the pool and enhances the ability to move impurities. The kinetic energy generated by the high-speed water flow is converted into the power to propel the impurities to migrate. Combined with the inclined structure of the flow guide plane at the bottom of the pool, this creates a stronger impurity transport effect, ensuring that impurities in the sedimentation tank 2 can move quickly and thoroughly to the edge, thus improving the impurity removal efficiency in the pretreatment stage.

[0065] Furthermore, refer to Figure 4 As shown, the higher part of the left guide plane 23 and the right guide plane 24 is the upstream side near the guide ridge, and the lower part is the downstream side near the pool wall. At the lowest point of the downstream, impurity collection tanks 6 are respectively set (with removable containers inside for easy removal and cleaning of blocky or flaky impurities). The impurity collection tanks 6 are arranged longitudinally along the side wall of the pool, and the opening of the tank is flush with the lower edge of the guide plane, so that blocky or flaky impurities can slide into the tank along the guide plane with the water flow.

[0066] In this embodiment, the impurity collection tank 6 provides a centralized collection area for settled impurities. Utilizing the inclined slope of the guide plane, impurities automatically fall into the collection tank 6 under the combined action of water flow and gravity, preventing accumulation at the bottom edge of the tank. This structure facilitates subsequent periodic cleaning of impurities, reducing the frequency of manual intervention. Simultaneously, it ensures unobstructed water flow within the sedimentation tank 2, maintaining stable sedimentation and flow guidance effects, thus guaranteeing the long-term reliable operation of the entire car wash water treatment system.

[0067] Furthermore, refer to Figure 4 As shown, a sludge-pushing assembly 7 is installed inside the sedimentation tank 2. This assembly includes a float 71, which is slidably mounted on the inner wall of the sedimentation tank 2 via a vertical slide rail. The float 71 moves synchronously with the rise and fall of the water level in the tank (it may also slide up and down when there are waves on the water surface). Two push rods 72 are hinged to the lower surface of the float 71, and the other end of the push rods 72 is connected to a push plate 73. The push plate 73 is in contact with the surfaces of the left guide plane 23 and the right guide plane 24. When the water level drops, the float 71 drives the push rods 72 to move towards the bottom of the tank, and the push plate 73 pushes the impurities downstream to the impurity collection tank 6 along the guide plane. When the water level rises, the float 71 rises, and the push rods 72 drive the push plate 73 to reset, waiting for the next sludge-pushing action.

[0068] In this embodiment, the sludge pushing component 7 utilizes the potential energy of water level changes in the sedimentation tank 2 as its power source (combined with the swing opening and closing component 22 to allow car wash water to enter the sedimentation tank 2 intermittently. After accumulating a certain amount of car wash water, it is discharged in a concentrated manner, which can effectively change the level of water level changes and facilitate the up-and-down sliding of the float 71). No additional drive device is required; the rising and falling of the float 71 drives the pusher 73 to automatically push away impurities. The close fit design between the pusher 73 and the guide plane ensures that impurities can be effectively pushed to the impurity collection tank 6, especially for long-deposited or heavy blocky impurities, compensating for the shortcomings of simply relying on water flow rinsing. This structure achieves automated collection of impurities in the sedimentation tank 2, reduces manual sludge cleaning costs, and improves the overall intelligence level of the treatment device.

[0069] Furthermore, refer to Figure 4 As shown, the two push rods 72 of the sludge pushing assembly 7 correspond to the left guide plane 23 and the right guide plane 24, respectively. The shape of the push plate 73 matches the inclination angle of the guide plane, ensuring that the push plate 73 always fits against the surface of the guide plane during movement. The area of ​​the float plate 71 is greater than 1 / 2 of the cross-sectional area of ​​the water surface of the sludge tank 2 to ensure sufficient buoyancy to drive the push rods 72 and the push plate 73. The hinge point between the push rod 72 and the float plate 71 is located in the middle of the float plate 71, so that the thrust of the push plates 73 on both sides is evenly distributed.

[0070] In this embodiment, the symmetrically arranged push rods 72 and push plates 73 can simultaneously push impurities on the left and right guide planes, ensuring that impurities on both sides are collected synchronously and avoiding accumulation on one side. The close fit design between the push plate 73 and the guide plane eliminates gaps during the pushing process, preventing impurities from being missed. The buoyancy drive of the float plate 71 automatically matches the sludge pushing action with the water level change cycle of the sedimentation tank 2, eliminating the need for a complex control system and making the structure simple and reliable.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A car wash water treatment device, characterized in that, include: The car wash workshop (1) is used to accommodate cars, wash and clean them, and collect the car wash water. The sedimentation tank (2) is connected to the car wash workshop (1) and is used to contain the car wash water discharged from the car wash workshop (1) and to settle the impurities in the car wash water. The sedimentation tank (2) has an overflow outlet. The sewage tank (3) is connected to the overflow outlet of the sedimentation tank (2), and the sewage tank (3) can accommodate the car wash water overflowing from the overflow outlet; A cyclone grit chamber (5) is connected between the sewage tank (3) and the clear water tank (4). The cyclone grit chamber (5) can separate the car wash water in the sewage tank (3) into clear water and transport the clear water to the clear water tank (4). The sedimentation tank (2) is connected to the washing workshop (1) through a conveying pipe (21). The conveying pipe (21) has an input end (211) and an output end (212). The output end (212) extends to the center of the bottom of the sedimentation tank (2) and is used to convey car wash water into the sedimentation tank (2) and cause impurities to move towards the bottom edge of the sedimentation tank (2) under the influence of water flow. A swing opening and closing assembly (22) is provided inside the conveying pipe (21). The swing opening and closing assembly (22) is configured to swing open after a preset amount of car wash water has accumulated inside the conveying pipe (21) and swing close after the accumulated car wash water has been discharged. The swing opening and closing assembly (22) includes: A swing shaft (221) is rotatably disposed inside the conveying pipe (21) and extends in the horizontal direction. The upper and lower sides of the swing shaft (221) are respectively provided with a first magnetic suction member (222) and a swing plate (224). The top wall of the conveying pipe (21) is provided with a second magnetic suction member (223) that can be attracted to the first magnetic suction member (222). The conveying pipe (21) is set horizontally or inclined. The swing opening and closing assembly (22) has an open state and a closed state. When the swing opening and closing assembly (22) is in the open state, the first magnetic suction member (222) is separated from the second magnetic suction member (223) and the swing plate (224) is in an inclined state. When the swing opening and closing assembly (22) is in the closed state, the first magnetic suction member (222) is attracted to the second magnetic suction member (223) and the swing plate (224) is in a vertical state.

2. The car wash water treatment device according to claim 1, characterized in that, The sedimentation tank (2) has an inclined left guide plane (23) and a right guide plane (24) at the bottom. The left guide plane (23) and the right guide plane (24) are symmetrical and have an intersection line. The intersection of the left guide plane (23) and the right guide plane (24) protrudes upward. The output end (212) is located above the intersection line of the left guide plane (23) and the right guide plane (24).

3. The car wash water treatment device according to claim 2, characterized in that, The output terminal (212) has a rectangular cross-section, with the long side of the rectangle extending along the line of intersection of the left guide plane (23) and the right guide plane (24).

4. The car wash water treatment device according to claim 1, characterized in that, The cross-sectional area of ​​the output end (212) is smaller than the cross-sectional area of ​​the other parts of the conveying pipe (21) so as to increase the flow rate of the car wash water when it passes through the output end (212).

5. A car wash water treatment device according to claim 2, characterized in that, The intersection of the left guide plane (23) and the right guide plane (24) is upstream, and the point away from the intersection is downstream; The sedimentation tank (2) has impurity collection troughs (6) located at the bottom of the tank downstream of the left guide plane (23) and the right guide plane (24).

6. A car wash water treatment device according to claim 5, characterized in that, Also includes: Sludge pushing assembly (7) is disposed in the sedimentation tank (2). The sludge pushing assembly (7) is used to push impurities located on the left guide plane (23) and the right guide plane (24) into the impurity collection tank (6).

7. A car wash water treatment device according to claim 6, characterized in that, The slag pusher assembly (7) includes: A floating plate (71) is slidably disposed in the sedimentation tank (2). The floating plate (71) floats on the water surface and can move up and down with the rise and fall of the water surface. The push rod (72) is hinged at the upper end to the float (71) and connected to the push plate (73) at the lower end. There are two push rods (72) and two push plates (73) respectively. The two push plates (73) are located on the left guide plane (23) and the right guide plane (24). The push rod (72) can drive the push plate (73) to move along the left guide plane (23) or the right guide plane (24) under the sliding action of the float (71) to push impurities into the impurity collection tank (6).

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