A fully automatic car wash wastewater circulation equipment

Abstract

The present invention discloses a fully automatic car wash wastewater circulation device, which relates to wastewater recycling equipment and is mainly intended to solve the problem of insufficient flocculation and sedimentation of existing equipment; the device comprises a first sedimentation tank, a second sedimentation tank and a purification tank which are connected in sequence, the upper part of one side wall of the first sedimentation tank is connected with a water inlet pipe, the bottom of the purification tank is connected with a water outlet pipe, the second sedimentation tank is provided with a flocculation unit, the flocculation unit comprises a rotating shaft, a driving mechanism for driving the rotating shaft to rotate, a stirring rod and a supply assembly for supplying a flocculant, the supply assembly comprises a cylinder body, a piston, a piston rod and a power mechanism for driving the piston rod to move back and forth, a filter assembly is provided at the pipe mouth of the water inlet pipe on the first sedimentation tank, a flocculation unit is provided, the flocculant is alternately fed in and aeration is performed, which helps to fully and evenly mix the flocculant and the wastewater and improves the sedimentation efficiency; a filter assembly is provided for filtering impurities in the wastewater.

Description

Technical Field

[0001] The invention relates to wastewater recycling equipment, in particular to full-automatic car washing wastewater recycling equipment. Background Art

[0002] Wastewater refers to the collective term for water discharged during residential activities and runoff rainwater. It includes domestic sewage, industrial wastewater, and other unused water such as initial rainwater runoff into drainage pipes.

[0003] During the car washing process, a large amount of wastewater is generated. If it is not utilized, it will cause serious waste of water resources. Existing car washing wastewater circulation equipment generally adds flocculants for precipitation. However, due to the insufficient and uniform mixing of flocculants and water, the flocculation and precipitation effect is reduced. Summary of the Invention

[0004] The object of the present invention is to provide a fully automatic car wash wastewater circulation device to solve the above problems.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A fully automatic car wash wastewater circulation device includes a first sedimentation tank, a second sedimentation tank and a purification tank connected in sequence, a first connecting pipe connecting the middle of the first sedimentation tank with the top of the second sedimentation tank, a second connecting pipe connecting the middle of the second sedimentation tank with the middle of the purification tank, a booster pump is installed on the first connecting pipe and the second connecting pipe, an upper part of a side wall of the first sedimentation tank is connected to a water inlet pipe, and a bottom of the purification tank is connected to a water outlet pipe, a flocculation unit is installed on the second sedimentation tank, and the flocculation unit includes a rotating shaft, a driving mechanism for driving the rotating shaft to rotate, a stirring rod and a supply component for supplying flocculant, The rotating shaft is vertically rotatably installed on the second sedimentation tank, and the top of the rotating shaft passes through the top of the second sedimentation tank and extends above the second sedimentation tank. The driving mechanism is located at the top of the second sedimentation tank and drives the connecting rotating shaft. The rotating shaft is located on the shaft section in the second sedimentation tank and multiple stirring rods are fixed from top to bottom. The rotating shaft and the stirring rod are both hollow inside and the inner cavities of the two are connected. A plurality of through holes are evenly opened on the stirring rod. The outlet of the supply component is connected to the rotating shaft through a supply pipe. One end of the supply pipe penetrates from the top of the rotating shaft and is rotatably connected to the rotating shaft. The supply component includes a cylinder, a piston, a piston rod and a device for driving The power mechanism of the reciprocating motion of the piston rod, the cylinder body is fixed to the top of the second sedimentation tank, a piston is arranged in the cylinder body, a piston rod is fixed to one side of the piston, the other end of the piston rod is movable through the guide hole on the side wall of the cylinder body and extends to the outside of the cylinder body, the power mechanism drives the connection piston rod at one end outside the cylinder body, the outlets at both ends of the top of the cylinder body are connected to pipes, the two pipes are connected to the supply pipe, the two ends of the bottom of the cylinder body are respectively connected to the suction pipe and the liquid suction pipe, the suction pipe is connected to the atmosphere, and the other end of the liquid suction pipe is connected to the bottom of the flocculant box, the pipe, the liquid suction pipe and the suction pipe are all equipped with one-way Valve, the inner cavity of the purification tank is detachably installed with a flat ceramic membrane and an activated carbon plate, there are two flat ceramic membranes and they are located above the activated carbon plate; a check assembly is provided at the bottom of the second sedimentation tank, the check assembly includes a funnel plate, a check plate and an auger blade, the funnel plate is fixedly installed at the lower part of the inner cavity of the second sedimentation tank, the bottom end of the rotating shaft passes through the funnel mouth of the funnel plate and extends to the bottom of the funnel plate, a check plate is fixed to the bottom end of the rotating shaft, the check plate is umbrella-shaped and its size is larger than the funnel mouth of the funnel plate, and the shaft section of the rotating shaft above the funnel mouth is fixedly installed with an auger blade for transporting the sludge downward.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: the bottoms of the first sedimentation tank and the second sedimentation tank are both provided with sewage outlets, valves are installed on the sewage outlets, and the bottoms of the first sedimentation tank and the second sedimentation tank are both inclined toward the sewage outlets.

[0009] In an optional solution: the driving mechanism includes a first motor and a gear pair, the first motor is fixedly mounted on the top of the second sedimentation tank, the first motor is driven and connected to the rotating shaft through the gear pair, and the gear pair includes a driving spur gear fixedly mounted on the output shaft of the first motor and a driven spur gear fixedly mounted on the rotating shaft.

[0010] In an optional solution: the power mechanism includes a second motor, a turntable and a movable rod, the second motor is fixedly installed on the top of the second sedimentation tank, the turntable is fixedly installed on the output shaft of the second motor, the turntable is cooperatively connected with the movable rod, the movable rod is fixedly connected with the piston rod, a cylindrical pin is fixed on the outer ring of the front end face of the turntable, and a through groove is opened on the movable rod for the cylindrical pin to pass through and move.

[0011] In an optional solution: a limiting nail is pierced through the end of the cylindrical pin away from the turntable.

[0012] In an optional solution: the flocculant box is fixedly installed on the top of the first sedimentation tank, and a liquid addition port is provided on the top of the flocculant box.

[0013] In an optional scheme: a filter assembly is installed on the first sedimentation tank at the mouth of the water inlet pipe, and the filter assembly includes a third motor, a screen frame, a screen plate and a collection frame. The third motor is fixedly installed on the side wall of the first sedimentation tank and is located above the water inlet pipe. The output shaft of the third motor extends into the first sedimentation tank and is fixedly connected to the screen frame. The top of the screen frame extends to above the first sedimentation tank. The screen frame is cylindrical. The screen frame is open at one end close to the water inlet pipe. The mouth of the water inlet pipe extends into the screen frame. A plurality of screen plates are fixed on the inner side wall of the screen frame at equal intervals. The screen plates are arranged at an angle. A collection frame for collecting debris is placed on the top of the first sedimentation tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. A flocculation unit is provided, which includes a rotating shaft, a driving mechanism for driving the rotating shaft to rotate, a stirring rod, and a supply assembly for supplying flocculant. The rotating shaft and the stirring rod are driven to rotate by the driving mechanism, and then a second motor drives a turntable to rotate. The turntable drives a movable rod to reciprocate through a cylindrical pin, and the movable rod drives a piston to reciprocate through a piston rod. When the piston reciprocates, air and flocculant are alternately sucked into the cylinder body, and then the flocculant and air are alternately sent into the supply pipe, and then enter the rotating shaft and are ejected from the through hole on the stirring rod. The alternating feeding of flocculant and aeration further helps to fully and evenly mix the flocculant and wastewater, thereby improving the sedimentation efficiency;

[0016] 2. A check assembly is provided, which includes a funnel plate, a check plate and an auger blade, which helps the sedimentation of sludge, reduces the impact of stirring and prevents sludge from flowing back;

[0017] 3. A filter assembly is provided for filtering debris in the wastewater. The filter assembly includes a third motor, a screen frame, a screen plate and a collection frame. Water from the water inlet pipe is discharged from the pipe port and then filtered through the screen frame. The third motor drives the screen frame to rotate, and the screen plate rotates with the screen frame. The screen plate lifts the debris upward, and the debris follows the screen plate to move above the first sedimentation tank, and then slides into the collection frame for automatic collection, thereby improving the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 1 is a schematic structural diagram of the first embodiment of the present invention.

[0019] Figure 2 2 is a schematic structural diagram of a second embodiment of the present invention.

[0020] Figure 3 Schematic diagram of the structure of the filter assembly in the second embodiment of the present invention.

[0021] Figure 4 Schematic diagram of the structure of the screen frame of the filter assembly in the second embodiment of the present invention.

[0022] Notes on figure numbers: 1-first sedimentation tank, 2-water inlet pipe, 3-screen frame, 4-screen plate, 5-third motor, 6-collecting frame, 7-flocculant box, 8-turntable, 9-first motor, 10-movable rod, 11-cylindrical pin, 12-piston rod, 13-piston, 14-cylinder body, 15-supply pipe, 16-driving mechanism, 17-stirring rod, 18-auger blade, 19-funnel plate, 20-check plate, 21-sewage outlet, 22-second sedimentation tank, 23-first connecting pipe, 24-second connecting pipe, 25-purification tank, 26-flat ceramic membrane, 27-activated carbon plate, 28-water outlet pipe, 29-liquid suction pipe, 30-air suction pipe. DETAILED DESCRIPTION

[0023] The following embodiments will be described in detail with reference to the accompanying drawings. Similar or identical parts are denoted by the same reference numerals in the drawings or description. In actual applications, the shape, thickness, or height of each component may be enlarged or reduced. The various embodiments listed in the present invention are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention. Example 1

[0024] See also Figure 1In an embodiment of the present invention, a fully automatic car washing wastewater circulation device includes a first sedimentation tank 1, a second sedimentation tank 22 and a purification tank 25 that are connected in sequence. In this embodiment, a first connecting pipe 23 is connected between the middle of the first sedimentation tank 1 and the top of the second sedimentation tank 22, and a second connecting pipe 24 is connected between the middle of the second sedimentation tank 22 and the middle of the purification tank 25. A booster pump is installed on the first connecting pipe 23 and the second connecting pipe 24. The upper part of one side wall of the first sedimentation tank 1 is connected to the water inlet pipe 2, and the bottom of the purification tank 25 is connected to the water outlet pipe 28. The bottom of the first sedimentation tank 1 and the second sedimentation tank 22 are both provided with a sewage outlet 21, and a valve is installed on the sewage outlet 21. The bottom of the first sedimentation tank 1 and the second sedimentation tank 22 are both inclined toward the sewage outlet 21 to facilitate the discharge of sludge. A flocculation unit is installed on the second sedimentation tank 22, and the flocculation unit includes a rotating shaft, a driving mechanism 16 for driving the rotating shaft to rotate, a stirring rod 17 and a supply assembly for supplying flocculant. The rotating shaft is vertically rotatably installed on the second sedimentation tank 22, and the top of the rotating shaft passes through the top of the second sedimentation tank 22 and extends above the second sedimentation tank 22. The driving mechanism 16 is located at the top of the second sedimentation tank 22 and drives the connecting rotating shaft. In this embodiment, the driving mechanism 16 includes a first motor 9 and a gear pair. The first motor 9 is fixedly installed on the top of the second sedimentation tank 22. The first motor 9 is driven to connect the rotating shaft through the gear pair. The gear pair includes a driving spur gear fixedly installed on the output shaft of the first motor 9 and a driven spur gear fixedly installed on the rotating shaft. The rotating shaft is located in the second sedimentation tank 2 2 is fixed with multiple stirring rods 17 from top to bottom. Furthermore, the rotating shaft and the stirring rod 17 are hollow inside and the inner cavities of the two are connected. A plurality of through holes are evenly opened on the stirring rod 17. The outlet of the supply assembly is connected to the rotating shaft through the supply pipe 15. One end of the supply pipe 15 penetrates from the top of the rotating shaft and is rotatably connected to the rotating shaft. The supply assembly includes a cylinder body 14, a piston 13, a piston rod 12 and a power mechanism for driving the piston rod 12 to reciprocate. The cylinder body 14 is fixed to the top of the second sedimentation tank 22. A piston 13 is provided in the cylinder body 14. A piston rod 12 is fixed to one side of the piston 13. The other end of the piston rod 12 is movable through the guide hole on the side wall of the cylinder body 14 and extends to the outside of the cylinder body 14. The power mechanism drives the piston rod 12 to be connected to the cylinder body. 14 outer end, in this embodiment, the power mechanism includes a second motor, a turntable 8 and a movable rod 10, the second motor is fixedly installed on the top of the second sedimentation tank 22, the turntable 8 is fixedly installed on the output shaft of the second motor, the turntable 8 is connected with the movable rod 10, and the movable rod 10 is fixedly connected with the piston rod 12, a cylindrical pin 11 is fixed to the outer ring of the front end surface of the turntable 8, and a through groove for the cylindrical pin 11 to pass through and move is opened on the movable rod 10, and a limiting nail is pierced at the end of the cylindrical pin 11 away from the turntable 8 to prevent the cylindrical pin 11 from being separated from the movable rod 10, the outlets at both ends of the top of the cylinder body 14 are connected to pipes, and the two pipes are connected to the supply pipe 15, and the two ends of the bottom of the cylinder body 14 are respectively connected to the suction pipe 30 and the liquid suction pipe 29.The suction pipe 30 is connected to the atmosphere, and the other end of the suction pipe 29 is connected to the bottom of the flocculant box 7. In this embodiment, the flocculant box 7 is fixedly installed on the top of the first sedimentation tank 1. A liquid filling port is provided on the top of the flocculant box 7. A one-way valve is installed on the pipeline, the suction pipe 29 and the suction pipe 30. When working, the driving mechanism 16 drives the rotating shaft and the stirring rod 17 to rotate, and then the second motor drives the turntable 8 to rotate. The turntable 8 drives the movable rod 10 to reciprocate through the cylindrical pin 11. The movable rod 10 drives the piston 13 to reciprocate through the piston rod 12. When the piston 13 reciprocates, air and flocculant are alternately sucked into the cylinder 14, and then the flocculant and air are alternately sent into the supply pipe 15, and then enter the rotating shaft and are discharged by the passage on the stirring rod 17. The holes are sprayed out, and flocculants are alternately fed in and aeration is performed, which further contributes to the full and uniform mixing of the flocculant and the wastewater, thereby improving the sedimentation efficiency. A check assembly is provided below the second sedimentation tank 22, and the check assembly includes a funnel plate 19, a check plate 20 and an auger blade 18. The funnel plate 19 is fixedly installed at the lower part of the inner cavity of the second sedimentation tank 22, and the bottom end of the rotating shaft passes through the funnel mouth of the funnel plate 19 and extends to the bottom of the funnel plate 19. A check plate 20 is fixed to the bottom end of the rotating shaft. The check plate 20 is umbrella-shaped and has a size larger than the funnel mouth of the funnel plate 19. The auger blade 18 for conveying the sludge downward is fixedly installed on the shaft section of the rotating shaft above the funnel mouth, which contributes to the sedimentation of the sludge, reduces the impact of stirring, and prevents the sludge from flowing back.

[0025] Furthermore, a flat ceramic membrane 26 and an activated carbon plate 27 are detachably installed in the inner cavity of the purification tank 25 . There are two flat ceramic membranes 26 and they are located above the activated carbon plate 27 . Example 2

[0026] See also Figures 2-4 The difference between the embodiment of the present invention and embodiment 1 is that a filter assembly is installed at the mouth of the water inlet pipe 2 on the first sedimentation tank 1 to filter impurities in the wastewater. The filter assembly includes a third motor 5, a screen frame 3, a screen plate 4 and a collection frame 6. The third motor 5 is fixedly installed on the side wall of the first sedimentation tank 1 and is located above the water inlet pipe 2. The output shaft of the third motor 5 extends into the first sedimentation tank 1 and is fixedly connected to the screen frame 3. The top of the screen frame 3 extends above the first sedimentation tank 1. The screen frame 3 is cylindrical and close to the water inlet pipe 2. One end is open, and the nozzle of the water inlet pipe 2 extends into the mesh frame 3. A plurality of mesh plates 4 are fixed on the inner side wall of the mesh frame 3 at equal intervals in a circular direction. The mesh plates 4 are arranged tilted. A collection frame 6 for collecting debris is placed on the top of the first sedimentation tank 1. The water from the water inlet pipe 2 is discharged from the nozzle and then filtered through the mesh frame 3. The third motor 5 drives the mesh frame 3 to rotate, and the mesh plate 4 rotates with the mesh frame 3. The mesh plate 4 lifts the debris upward, and the debris follows the mesh plate 4 to move above the first sedimentation tank 1, and then slides into the collection frame 6 for automatic collection, thereby improving the filtration efficiency.

[0027] The working principle of the present invention is: when working, the water in the water inlet pipe 2 is discharged from the pipe mouth and then filtered through the screen frame 3, the third motor 5 drives the screen frame 3 to rotate, and the screen plate 4 follows the screen frame 3 to rotate. The screen plate 4 lifts the debris upward, and the debris follows the screen plate 4 to move above the first sedimentation tank 1, and then slides into the collection frame 6 for automatic collection, thereby improving the filtration efficiency. The water in the first sedimentation tank 1 enters the second sedimentation tank 22 through the first connecting pipe 23, and the rotating shaft and the stirring rod 17 are driven to rotate by the driving mechanism 16, and then the second motor drives the turntable 8 to rotate, and the turntable 8 drives the movable rod 10 to reciprocate through the cylindrical pin 11, and the movable rod 10 drives the piston 13 to reciprocate through the piston rod 12. When the piston 13 reciprocates, air and flocculant are alternately sucked into the cylinder 14, and then the flocculant and air are alternately sent into the supply pipe 15, and then enter the rotating shaft and are sprayed out from the through hole on the stirring rod 17, and are alternately sent to the flocculation. The flocculant is mixed with the wastewater and aeration is carried out, which further contributes to the full and uniform mixing of the flocculant and the wastewater, thereby improving the sedimentation efficiency. A check assembly is provided under the second sedimentation tank 22, and the check assembly includes a funnel plate 19, a check plate 20 and an auger blade 18. The funnel plate 19 is fixedly installed at the lower part of the inner cavity of the second sedimentation tank 22, and the bottom end of the rotating shaft passes through the funnel mouth of the funnel plate 19 and extends to the bottom of the funnel plate 19. A check plate 20 is fixed to the bottom end of the rotating shaft. The check plate 20 is umbrella-shaped and has a size larger than the funnel mouth of the funnel plate 19. The auger blade 18 for conveying the sludge downward is fixedly installed on the shaft section of the rotating shaft above the funnel mouth, which contributes to the sedimentation of the sludge and prevents the sludge from flowing back. The water in the second sedimentation tank 22 enters the purification tank 25 through the second connecting pipe 24, and is filtered and purified by the flat ceramic membrane 26 and the activated carbon plate 27 in the purification tank 25, and then discharged from the discharge pipe to the car washing equipment for recycling.

[0028] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A fully automatic car wash wastewater circulation device, comprising a first sedimentation tank (1), a second sedimentation tank (22) and a purification tank (25) connected in sequence, wherein a first connecting pipe (23) is connected between the middle of the first sedimentation tank (1) and the top of the second sedimentation tank (22), a second connecting pipe (24) is connected between the middle of the second sedimentation tank (22) and the middle of the purification tank (25), a booster pump is installed on the first connecting pipe (23) and the second connecting pipe (24), an upper part of a side wall of the first sedimentation tank (1) is connected to a water inlet pipe (2), and a bottom of the purification tank (25) is connected to a water outlet pipe (28), characterized in that: A flocculation unit is installed on the second sedimentation tank (22), and the flocculation unit includes a rotating shaft, a driving mechanism (16) for driving the rotating shaft to rotate, a stirring rod (17) and a supply assembly for supplying flocculant. The rotating shaft is vertically rotatably installed on the second sedimentation tank (22), and the top end of the rotating shaft passes through the top of the second sedimentation tank (22) and extends above the second sedimentation tank (22). The driving mechanism (16) is located at the top of the second sedimentation tank (22) and drives the connecting rotating shaft. A plurality of stirring rods (17) are fixed from top to bottom on the shaft section of the rotating shaft located in the second sedimentation tank (22). The rotating shaft and the stirring rod (17) are both hollow inside and the inner cavities of the two are connected. A plurality of through holes are evenly opened on the stirring rod (17); A check assembly is provided below the second sedimentation tank (22), the check assembly comprising a funnel plate (19), a check plate (20) and an auger blade (18), the funnel plate (19) being fixedly mounted at the lower portion of the inner cavity of the second sedimentation tank (22), the bottom end of the rotating shaft passing through the funnel opening of the funnel plate (19) and extending to the bottom of the funnel plate (19), the check plate (20) being fixed at the bottom end of the rotating shaft, the check plate (20) being umbrella-shaped and having a size larger than the funnel opening of the funnel plate (19), the auger blade (18) for conveying sludge downward being fixedly mounted on the shaft section of the rotating shaft located above the funnel opening; A filter assembly is installed on the first sedimentation tank (1) at the mouth of the water inlet pipe (2), and the filter assembly includes a third motor (5), a screen frame (3), a screen plate (4) and a collection frame (6). The third motor (5) is fixedly installed on the side wall of the first sedimentation tank (1) and is located above the water inlet pipe (2). The output shaft of the third motor (5) extends into the first sedimentation tank (1) and is fixedly connected to the screen frame (3). The top of the screen frame (3) extends above the first sedimentation tank (1). The screen frame (3) is cylindrical. One end of the screen frame (3) is open near the water inlet pipe (2). The mouth of the water inlet pipe (2) extends into the screen frame (3). A plurality of screen plates (4) are fixed circumferentially and equidistantly on the inner side wall of the screen frame (3). The screen plates (4) are tilted. A collection frame (6) for collecting debris is placed on the top of the first sedimentation tank (1). The screen plate (4) lifts the debris upwards, and the debris follows the screen plate (4) to move above the first sedimentation tank (1), and then slides into the collection frame (6) and is automatically collected.

2. The fully automatic car wash wastewater circulation equipment according to claim 1 is characterized in that: The outlet of the supply assembly is connected to the rotating shaft through a supply pipe (15). One end of the supply pipe (15) penetrates the top of the rotating shaft and is rotatably connected to the rotating shaft. The supply assembly includes a cylinder (14), a piston (13), a piston rod (12) and a power mechanism for driving the piston rod (12) to reciprocate. The cylinder (14) is fixed to the top of the second sedimentation tank (22). A piston (13) is provided in the cylinder (14). A piston rod (12) is fixed to one side of the piston (13). The other end of the piston rod (12) is movable through the side wall of the cylinder (14). The guide hole extends to the outside of the cylinder body (14), and the power mechanism drives the connecting piston rod (12) to be located at one end outside the cylinder body (14). The outlets at both ends of the top of the cylinder body (14) are connected to pipes, and the two pipes are connected to the supply pipe (15). The two ends of the bottom of the cylinder body (14) are respectively connected to the suction pipe (30) and the liquid suction pipe (29). The suction pipe (30) is connected to the atmosphere, and the other end of the liquid suction pipe (29) is connected to the bottom of the flocculant tank (7). One-way valves are installed on the pipe, the liquid suction pipe (29) and the suction pipe (30).

3. The fully automatic car wash wastewater circulation equipment according to claim 1 is characterized in that: A flat ceramic membrane (26) and an activated carbon plate (27) are detachably mounted in the inner cavity of the purification tank (25). There are two flat ceramic membranes (26) and the two are located above the activated carbon plate (27).

4. The fully automatic car wash wastewater circulation equipment according to claim 1 is characterized in that: The bottoms of the first sedimentation tank (1) and the second sedimentation tank (22) are both provided with a sewage outlet (21), a valve is installed on the sewage outlet (21), and the bottoms of the first sedimentation tank (1) and the second sedimentation tank (22) are both inclined toward the sewage outlet (21).

5. The fully automatic car wash wastewater circulation equipment according to claim 1 is characterized in that: The driving mechanism (16) includes a first motor (9) and a gear pair. The first motor (9) is fixedly mounted on the top of the second sedimentation tank (22). The first motor (9) is connected to the rotating shaft through the gear pair. The gear pair includes a driving spur gear fixedly mounted on the output shaft of the first motor (9) and a driven spur gear fixedly mounted on the rotating shaft.

6. The fully automatic car wash wastewater circulation equipment according to claim 2 is characterized in that: The power mechanism includes a second motor, a turntable (8) and a movable rod (10), wherein the second motor is fixedly mounted on the top of the second sedimentation tank (22), the turntable (8) is fixedly mounted on the output shaft of the second motor, the turntable (8) is cooperatively connected with the movable rod (10), the movable rod (10) is fixedly connected with the piston rod (12), a cylindrical pin (11) is fixed to the outer ring of the front end surface of the turntable (8), and a through slot for the cylindrical pin (11) to penetrate and move is opened on the movable rod (10).

7. The fully automatic car wash wastewater circulation equipment according to claim 6 is characterized in that: A limiting pin is provided on the end of the cylindrical pin (11) away from the turntable (8).

8. The fully automatic car wash wastewater circulation equipment according to claim 1 is characterized in that: The flocculant box (7) is fixedly installed on the top of the first sedimentation tank (1), and a liquid addition port is provided on the top of the flocculant box (7).

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