A road maintenance pavement washing sewage treatment equipment

Abstract

The present invention relates to the technical field of sewage treatment equipment, and specifically to a road maintenance pavement flushing sewage treatment equipment, wherein the main body unit comprises a tank body, the bottom of the tank body is fixedly connected to a cross frame, the middle of the cross frame is fixedly connected to a motor, the output shaft of the motor faces the top of the tank body, a lifting rod is fixedly connected to the output shaft of the motor, a sleeve is provided above the lifting rod, the sleeve and the lifting rod are slidably connected, an adsorption unit for cleaning impurities on the surface of the sewage water is provided at the upper end of the lifting rod, a cleaning unit for unblocking the adsorption unit is provided above the adsorption unit, and an air flotation unit for breaking up bubbles is provided at the lower end of the lifting rod. In the present invention, the exhaust hole is driven to rotate by the rotation of the sealing ring, and the bubbles generated by the exhaust hole during exhaust will be cut by the hole edge of the exhaust hole to form a plurality of bubbles, so that the same volume of air generates more bubbles, so that the total surface area of ​​the bubbles is larger, the effect of adsorbing grease in the sewage is better, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, in particular to a sewage treatment equipment for road maintenance and pavement flushing. Background Art

[0002] Road washing wastewater mainly comes from the washing and cleaning process of urban roads. These wastewaters contain a variety of pollutants. If they are discharged directly without treatment, they will cause serious pollution to the water environment. This wastewater is mainly composed of wastewater containing various pollutants brought by vehicle flow and rainwater drift, especially harmful substances such as petroleum.

[0003] Traditional sewage treatment equipment generally uses flotation to remove grease from sewage. During the process of bubbles floating upward in the sewage, they come into contact with the grease, causing the grease to be adsorbed on the surface of the bubbles. The bubbles then float and bring the grease to the surface of the sewage to form aggregates, which are then cleaned up using cleaning equipment. The number, density, and distribution of bubbles will affect the efficiency of the entire sewage treatment. Traditional equipment has not made effective improvements in this regard, resulting in low sewage treatment efficiency.

[0004] In view of this, the present invention proposes a road maintenance pavement washing sewage treatment equipment to solve the above technical problems. Summary of the invention

[0005] In order to solve the above technical problems existing in the prior art, the present invention provides a road maintenance pavement washing sewage treatment equipment.

[0006] The present invention provides a road maintenance pavement flushing sewage treatment equipment, comprising a main body unit, the main body unit comprising a tank body, the bottom of the tank body is fixedly connected to a cross frame, the middle of the cross frame is fixedly connected to a motor, the output shaft of the motor faces the top of the tank body, the output shaft of the motor is fixedly connected to a lifting rod, a sleeve is provided above the lifting rod, the sleeve and the lifting rod are slidably connected, an adsorption unit for cleaning impurities on the sewage water surface is provided at the upper end of the lifting rod, a cleaning unit for unblocking the adsorption unit is provided above the adsorption unit, and an air flotation unit for breaking up bubbles is provided at the lower end of the lifting rod;

[0007] The flotation unit includes a sealing ring, which is fixedly connected to the upper end surface of the sleeve, and the sealing ring seals the upper end of the sleeve and the outer wall of the lifting rod. A plurality of exhaust holes are provided on the sealing ring, and the sealing ring and the lifting rod are slidably connected. The sleeve and the lifting rod form a sealed space, and an air guide pipe is provided in the middle of the lifting rod. The air guide pipe is connected to the sealed space, and the upper end of the air guide pipe is fixedly connected and connected to an air inlet pipe. The air inlet pipe extends out of the tank body at one end away from the air guide pipe and is connected to an external air supply device.

[0008] Furthermore, the upper end of the tank body is detachably connected to an upper cover plate, to which a lifting ear for convenient lifting is fixedly connected, one side of the lower end of the tank body is fixedly connected to a water inlet pipe, and the bottom of the tank body is fixedly connected to a water outlet pipe.

[0009] Furthermore, the adsorption unit also includes a rotating column, which is fixedly connected to the center of the bottom of the sleeve. The upper end of the rotating column is fixedly connected to an inclined disc, which is inclined. A top ball is provided above the inclined disc, which is fixedly connected to the lower end of the lifting rod, and the top ball and the surface of the inclined disc are in sliding contact.

[0010] Furthermore, the upper end of the lifting rod is fixedly connected with a collecting pipe, and both sides of the bottom of the collecting pipe are fixedly connected with discharge pipes, and the discharge pipe extends out of the tank body at one side away from the collecting pipe.

[0011] Furthermore, a protrusion is fixedly provided at the bottom center of the collecting pipe to facilitate the flow of sewage.

[0012] Furthermore, the upper end of the collecting tube is provided with a plurality of openings for impurities to enter.

[0013] Furthermore, the lifting rod and the collecting pipe are movably connected to the axis of the tank body through a second bracket and a first bracket respectively.

[0014] Furthermore, the cleaning unit includes an arc-shaped plate, which is slidably inserted in the opening, and a fixed plate is fixed to the upper end of the arc-shaped plate, and the fixed plate is fixedly connected to the first bracket by an L-shaped bracket.

[0015] Furthermore, the arc surface of the arc plate is opened on a side of the arc plate away from the axis of the collecting pipe.

[0016] Furthermore, the exhaust hole is inclined toward a side away from the axis of the lifting rod.

[0017] Beneficial effects of the present invention:

[0018] In the present invention, the exhaust hole is driven to rotate by the rotation of the sealing ring, and the bubbles generated by the exhaust hole during exhaust will be cut by the edge of the exhaust hole to form multiple bubbles, so that the same volume of air produces more bubbles, and thus the total surface area of ​​the bubbles is larger, and the effect of adsorbing grease in sewage is better, thereby improving the effect and efficiency of sewage treatment; at the same time, when the lifting rod slides up and down, it drives the collecting pipe on the top to slide up and down, and then drives the opening to move up and down, continuously absorbing the grease on the surface of the sewage near it, so that the grease around the collecting pipe is continuously gathered and absorbed by the opening, and the grease in the sewage can be removed in this reciprocating manner, further improving the efficiency of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0020] Figure 1 This is a schematic diagram of the overall structure of a road maintenance pavement washing sewage treatment equipment;

[0021] Figure 2 This is a schematic diagram of the internal structure of a tank in a road maintenance pavement washing sewage treatment device;

[0022] Figure 3 for Figure 2 A magnified schematic diagram of the connection structure at center A;

[0023] Figure 4 for Figure 2 An enlarged schematic diagram of the cleaning unit at B in the middle;

[0024] Figure 5 This is a schematic diagram of the connection structure of an adsorption unit and an air flotation unit in a road maintenance pavement washing sewage treatment device;

[0025] Figure 6 for Figure 5 An enlarged schematic diagram of the connection structure at C in the middle;

[0026] Figure 7 for Figure 5 A schematic diagram of the cross section of the cleaning unit at B in the middle;

[0027] Figure 8 This is a schematic diagram of the connection structure of a cleaning unit and an adsorption unit in a road maintenance pavement washing sewage treatment device;

[0028] Fig. 9 for Figure 8 The cleaning unit at B in the middle is leaving the opening state diagram;

[0029] In the figure:

[0030] 1. Main unit; 11. Tank body; 12. Upper cover plate; 13. Lifting ears; 14. Water inlet pipe; 15. Water outlet pipe;

[0031] 2. Adsorption unit; 21. Lifting rod; 22. Sleeve; 23. Motor; 24. Horizontal frame; 25. Rotating column; 26. Inclined disc; 27. Top ball; 28. Collecting pipe; 29. ​​Protrusion; 210. Discharge pipe; 211. No. 1 bracket; 212. Opening; 213. No. 2 bracket;

[0032] 3. Cleaning unit; 31. Arc plate; 32. Fixing plate; 33. L-shaped bracket;

[0033] 4. Air flotation unit; 41. Sealing ring; 42. Exhaust hole; 43. Air guide pipe; 44. Air inlet pipe. DETAILED DESCRIPTION

[0034] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a road maintenance pavement flushing sewage treatment equipment comprises a main body unit 1, the main body unit 1 comprises a tank body 11, a cross frame 24 is fixedly connected to the bottom of the tank body 11, a motor 23 is fixedly connected to the middle of the cross frame 24, the output shaft of the motor 23 faces the top of the tank body 11, a lifting rod 21 is fixedly connected to the output shaft of the motor 23, a sleeve 22 is arranged above the lifting rod 21, the sleeve 22 and the lifting rod 21 are slidably connected, an adsorption unit 2 for cleaning impurities on the surface of sewage is arranged at the upper end of the lifting rod 21, a cleaning unit 3 for unblocking the adsorption unit 2 is arranged above the adsorption unit 2, and an air flotation unit 4 for breaking up bubbles is arranged at the lower end of the lifting rod 21;

[0037] The air flotation unit 4 includes a sealing ring 41, which is fixedly connected to the upper end surface of the sleeve 22. The sealing ring 41 seals the upper end of the sleeve 22 and the outer wall of the lifting rod 21. A plurality of exhaust holes 42 are provided on the sealing ring 41. The sealing ring 41 and the lifting rod 21 are slidably connected. The sleeve 22 and the lifting rod 21 form a sealed space. An air guide pipe 43 is provided in the middle of the lifting rod 21. The air guide pipe 43 is connected to the sealed space. The upper end of the air guide pipe 43 is fixedly connected and connected to an air inlet pipe 44. The end of the air inlet pipe 44 away from the air guide pipe 43 extends out of the tank body 11 and is connected to an external air supply device.

[0038] The upper end of the tank body 11 is detachably connected to an upper cover plate 12, to which a lifting ear 13 is fixedly connected for easy lifting; a water inlet pipe 14 is fixedly connected to one side of the lower end of the tank body 11, and a water outlet pipe 15 is fixedly connected to the bottom of the tank body 11.

[0039] In this embodiment, the grease contained in the exhaust gas produced by vehicles burning petroleum on the road will adhere to the road surface, and the sewage after maintenance and flushing will contain grease. The road flushing sewage and other types of sewage are diverted through underground pipelines and collected and classified for targeted treatment.

[0040] The external sewage pretreatment equipment is connected to the water inlet pipe 14 of the present invention, and the water outlet pipe 15 is kept in a closed state. The sewage is then pretreated by the external sewage pretreatment equipment and passed into the tank body 11 from the water inlet pipe 14. The water level in the tank body 11 rises. When the water level reaches a preset position below the opening 212 in the collecting pipe 28 (a water level sensing device is provided inside the tank body 11, which is a prior art and will not be described in detail here), the external sewage pretreatment equipment stops supplying water, and then the motor 23 is started to work. When the motor 23 rotates, it drives the sleeve 22 to rotate. When the sleeve 22 rotates, it drives the sealing ring 41 to rotate. Because external air is introduced into the air inlet pipe 44, the air inlet pipe 44 passes air into the air guide pipe 43, and the air guide pipe 43 passes air into the sleeve 22. Then the air is discharged from the exhaust hole 42. Bubbles are formed after the air and sewage come into contact. During the floating process, the surface of the bubbles will absorb the grease floating in the sewage, and then the bubbles float to the water surface attached with the grease.

[0041] It should be noted that because the sealing ring 41 rotates, the exhaust hole 42 also rotates with it, so the bubbles generated by the exhaust hole 42 during exhaust will be cut by the edge of the exhaust hole 42 to form multiple bubbles. For example, when the bubbles generated by the exhaust hole 42 have not yet detached, the bubbles have not yet reached the maximum, but the exhaust hole 42 rotates along the axis of the sealing ring 41, causing the bubbles to detach from the exhaust hole 42 in advance, and the bubbles formed are smaller. Finally, when the exhaust hole 42 rotates along the axis of the sealing ring 41, more bubbles are generated from the same volume of air, so that the total surface area of ​​the bubbles is larger, the effect of adsorbing grease in sewage is better, and the effect and efficiency of sewage treatment are improved.

[0042] Furthermore, the exhaust hole 42 is inclined toward a side away from the axis of the lifting rod 21 .

[0043] The exhaust hole 42 is set at an angle. When the sealing ring 41 rotates, the bubbles in the exhaust hole 42 are thrown out at an inclined angle, thereby entering different positions of the sewage and then floating up, which increases the probability of the bubbles combining with the oil in the sewage, further improving the efficiency of sewage treatment.

[0044] like Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, the adsorption unit 2 further includes a rotating column 25, which is fixedly connected to the center of the bottom of the sleeve 22, and an inclined disc 26 is fixedly connected to the upper end of the rotating column 25, and the inclined disc 26 is inclined. A top ball 27 is provided above the inclined disc 26, and the top ball 27 is fixedly connected to the lower end of the lifting rod 21, and the top ball 27 and the surface of the inclined disc 26 are in sliding contact;

[0045] The upper end of the lifting rod 21 is fixedly connected to a collecting pipe 28, and both sides of the bottom of the collecting pipe 28 are fixedly connected to discharge pipes 210, and the discharge pipe 210 extends out of the tank body 11 away from the collecting pipe 28;

[0046] A protrusion 29 is fixedly provided at the bottom center of the collecting pipe 28 to facilitate the flow of sewage;

[0047] The upper end of the collecting pipe 28 is provided with a plurality of openings 212 for impurities to enter;

[0048] The lifting rod 21 and the collecting pipe 28 are movably connected to the axis of the tank body 11 through the second bracket 213 and the first bracket 211 respectively.

[0049] In this embodiment, after the motor 23 is started, it drives the sleeve 22 to rotate. After the sleeve 22 rotates, it drives the rotating column 25 to rotate. The rotating column 25 drives the inclined disc 26 to rotate. When the inclined disc 26 rotates, it will apply an upward thrust to the top ball 27. At the same time, under the gravity of the lifting rod 21, the lifting rod 21 will slide up and down (the lifting rod 21 is limited by the second bracket 213 and can only slide up and down). When the lifting rod 21 slides up and down, it drives the collection pipe 28 at its top to slide up and down. Because the sewage water surface is below the opening 212, when the collection pipe 28 slides downward, it will drive the opening 212 to enter below the sewage water surface, so that the bubble surface of the sewage water surface The grease and sewage enter the collecting pipe 28 through the opening 212. After the opening 212 cleans the grease on the surface of the sewage nearby, the collecting pipe 28 slides upward, driving the opening 212 to enter the sewage surface. At this time, the grease around the collecting pipe 28 begins to gather again (because after the grease around the collecting pipe 28 is cleaned, the grease in other areas will flow over). As the collecting pipe 28 drives the opening 212 downward to enter below the sewage surface, the opening 212 is used again to clean the grease on the surface of the sewage nearby. The grease in the sewage can be removed by repeating this process. The water level sensing device will replenish sewage into the tank 11 in time to ensure the operation of the equipment.

[0050] After entering the collecting pipe 28 , the grease and sewage are gathered at the bottom of the collecting pipe 28 , and then discharged from the tank body 11 through the discharge pipe 210 , while the protrusions 29 guide the grease and sewage to both sides.

[0051] It should be noted that the collection pipe 28 drives the discharge pipe 210 to move up and down while moving up and down. The up and down movement of the discharge pipe 210 can make the grease and sewage inside it wriggle, thereby improving the discharge efficiency.

[0052] like Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9 As shown, the cleaning unit 3 includes an arc-shaped plate 31, which is slidably inserted into the opening 212, and a fixed plate 32 is fixed to the upper end of the arc-shaped plate 31, and the fixed plate 32 is fixedly connected to the first bracket 211 by an L-shaped bracket 33;

[0053] The arc surface of the arc plate 31 is opened on a side of the arc plate 31 away from the axis of the collecting pipe 28 .

[0054] In this embodiment, when the collecting pipe 28 moves upward (when the collecting pipe 28 drives the opening 212 to reach the water surface), the arc plate 31 will enter the opening 212, and the bottom of the arc plate 31 will reach the bottom of the opening 212. When grease and sewage enter the opening 212, they will bring in some floating objects that have not been filtered out, causing the floating objects to be stuck in the opening 212, resulting in blockage in the opening 212 so that grease and sewage cannot pass through, thereby reducing the efficiency of sewage treatment. After the arc plate 31 is inserted into the opening 212, the arc surface of the arc plate 31 will squeeze the floating objects out of the opening 212, thereby unblocking the opening 212 and improving the efficiency of sewage treatment.

[0055] The workflow is as follows:

[0056] First, connect the external sewage pretreatment equipment to the water inlet pipe 14 of the present invention, and keep the water outlet pipe 15 in a closed state, then pass the pretreated sewage through the external sewage pretreatment equipment through the water inlet pipe 14 into the tank body 11, the water level in the tank body 11 rises, and when the water level reaches the preset position below the opening 212 in the collecting pipe 28, the external sewage pretreatment equipment stops supplying water, and then starts the motor 23 to work. When the motor 23 rotates, it drives the sleeve 22 to rotate, and when the sleeve 22 rotates, it drives the sealing ring 41 to rotate. Because external air is introduced into the air inlet pipe 44, the air inlet pipe 44 passes air into the air guide pipe 43, and the air guide pipe 43 passes air into the sleeve 22. Because the sealing ring 41 rotates, the exhaust The hole 42 also rotates with it, so the bubbles generated by the exhaust hole 42 during exhaust will be cut by the edge of the exhaust hole 42 to form multiple bubbles. For example, when the bubbles generated by the exhaust hole 42 have not yet detached, the bubbles have not yet reached their maximum size, but the exhaust hole 42 rotates along the axis of the sealing ring 41, causing the bubbles to detach from the exhaust hole 42 in advance, and the bubbles formed are smaller. Finally, when the exhaust hole 42 rotates along the axis of the sealing ring 41, more bubbles are generated from the same volume of air, making the total surface area of ​​the bubbles larger. Then the air is discharged from the exhaust hole 42, and bubbles are formed after the air and sewage come into contact. During the floating process, the surface of the bubbles will absorb the grease floating in the sewage, and then the bubbles float to the water surface attached to the grease. At the same time, the rotation of the sleeve 22 drives the rotating column 25 to rotate, and the rotation of the rotating column 25 drives the inclined disk 26 to rotate. When the inclined disk 26 rotates, it will apply an upward thrust to the top ball 27. At the same time, under the gravity of the lifting rod 21, the lifting rod 21 will slide up and down. When the lifting rod 21 slides up and down, it drives the collecting pipe 28 on its top to slide up and down. Because the sewage water surface is below the opening 212, when the collecting pipe 28 slides downward, it will drive the opening 212 to enter below the sewage water surface, so that the grease and sewage on the bubble surface of the sewage water surface enter the collecting pipe 28 through the opening 212. After the opening 212 cleans the grease on the nearby sewage surface, the collecting pipe 28 slides upward, driving the opening 212 to enter the sewage water surface. At this time, the grease around the collecting pipe 28 begins to gather again. As the collecting pipe 28 drives the opening 212 downward to enter below the sewage water surface, the opening 212 is used again to clean the grease on the nearby sewage surface. The grease in the sewage can be removed by repeating this process. At the same time, when the collecting pipe 28 moves upward, the arc plate 31 will enter the opening 212, and the bottom of the arc plate 31 will reach the bottom of the opening 212. When grease and sewage enter the opening 212, they will bring in some floating objects that have not been filtered out, causing the floating objects to be stuck in the opening 212, resulting in blockage in the opening 212 so that grease and sewage cannot pass through, thereby reducing the efficiency of sewage treatment. After the arc plate 31 is inserted into the opening 212, the arc surface of the arc plate 31 will squeeze the floating objects out of the opening 212, thereby unblocking the opening 212 and improving the efficiency of sewage treatment.Finally, the grease and sewage enter the collecting pipe 28 and gather at the bottom of the collecting pipe 28 , and then are discharged from the tank body 11 through the discharge pipe 210 .

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A road maintenance pavement washing sewage treatment device, comprising a main unit (1), characterized in that: The main body unit (1) comprises a tank body (11), a cross frame (24) is fixedly connected to the bottom of the tank body (11), a motor (23) is fixedly connected to the middle of the cross frame (24), an output shaft of the motor (23) faces upwards of the tank body (11), a lifting rod (21) is fixedly connected to the output shaft of the motor (23), a sleeve (22) is provided above the lifting rod (21), the sleeve (22) and the lifting rod (21) are slidably connected, an adsorption unit (2) for cleaning impurities on the surface of sewage is provided at the upper end of the lifting rod (21), a cleaning unit (3) for unblocking the adsorption unit (2) is provided above the adsorption unit (2), and an air flotation unit (4) for breaking up bubbles is provided at the lower end of the lifting rod (21); The air flotation unit (4) comprises a sealing ring (41), the sealing ring (41) being fixedly connected to the upper end surface of the sleeve (22), the sealing ring (41) sealing the upper end of the sleeve (22) and the outer wall of the lifting rod (21), the sealing ring (41) being provided with a plurality of exhaust holes (42), the sealing ring (41) being slidably connected to the lifting rod (21), the sleeve (22) and the lifting rod (21) forming a sealed space, an air guide pipe (43) being provided in the middle of the lifting rod (21), the air guide pipe (43) being connected to the sealed space, the upper end of the air guide pipe (43) being fixedly connected and connected to an air inlet pipe (44), the air inlet pipe (44) extending out of the tank body (11) at one end away from the air guide pipe (43) and connected to an external air supply device; The upper end of the lifting rod (21) is fixedly connected to a collecting pipe (28), and discharge pipes (210) are fixedly connected to both sides of the bottom of the collecting pipe (28), and the discharge pipe (210) extends out of the tank body (11) at a side away from the collecting pipe (28); A protrusion (29) is fixedly provided at the center of the bottom of the collecting pipe (28) for guiding the flow of sewage; The upper end of the collecting pipe (28) is provided with a plurality of openings (212) for impurities to enter; The exhaust hole (42) is inclined toward a side away from the axis of the lifting rod (21); The adsorption unit (2) further comprises a rotating column (25), wherein the rotating column (25) is fixedly connected to the center of the bottom of the sleeve (22), and an inclined disc (26) is fixedly connected to the upper end of the rotating column (25), wherein the inclined disc (26) is arranged in an inclined manner, and a top ball (27) is provided above the inclined disc (26), wherein the top ball (27) is fixedly connected to the lower end of the lifting rod (21), and the top ball (27) and the surface of the inclined disc (26) are in sliding contact.

2. The road maintenance pavement washing sewage treatment equipment according to claim 1, characterized in that: The upper end of the tank body (11) is detachably connected to an upper cover plate (12), a lifting lug (13) is fixedly connected to the upper cover plate (12), a water inlet pipe (14) is fixedly connected to one side of the lower end of the tank body (11), and a water outlet pipe (15) is fixedly connected to the bottom of the tank body (11).

3. The road maintenance pavement washing sewage treatment equipment according to claim 1, characterized in that: The lifting rod (21) and the collecting pipe (28) are movably connected to the axis of the tank body (11) via a second bracket (213) and a first bracket (211), respectively.

4. The road maintenance pavement washing sewage treatment equipment as claimed in claim 3, characterized in that: The cleaning unit (3) comprises an arc-shaped plate (31), the arc-shaped plate (31) being slidably inserted into the opening (212), a fixing plate (32) being fixed to the upper end of the arc-shaped plate (31), and the fixing plate (32) being fixedly connected to the first bracket (211) by an L-shaped bracket (33).

5. The road maintenance pavement washing sewage treatment equipment as claimed in claim 4, characterized in that: The arc surface of the arc plate (31) is opened on a side of the arc plate (31) away from the axis of the collecting pipe (28).

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