Construction site water recycling system and recycling method thereof

Abstract

The application relates to the technical field of water recycling in construction sites, and particularly discloses a water recycling system for construction sites, which comprises a water collecting mechanism and a filtering mechanism. The water collecting mechanism comprises a water collecting pipeline assembly, a sewage discharging assembly arranged in the middle of the water collecting pipeline assembly and a conveying pipeline assembly arranged at the lower end of the water collecting pipeline assembly. The filtering mechanism comprises a water inlet pipe fixedly connected to the side of the conveying pipeline assembly, a filtering pool assembly fixedly connected to the side of the water inlet pipe and a sludge discharging assembly arranged on the side of the filtering pool assembly. In the application, the sewage discharging plate is driven by the driving motor, the traction rope I and the traction rope II to rapidly convey the wastewater in the water collecting pipe into the conveying pipe, so that the sludge in the wastewater is conveyed into the conveying pipeline assembly together with sundries, and the wastewater conveying channel is prevented from being blocked. The water recycling system can introduce various wastewater generated in the construction site into the water collecting tank for synchronous wastewater recycling treatment, thereby improving the wastewater treatment capacity and the wastewater treatment efficiency.

Description

Technical Field

[0001] This invention relates to the field of water recycling technology at construction sites, specifically to a water recycling system and recycling method for construction sites. Background Technology

[0002] Construction sites generate a large amount of wastewater, which includes construction water, rainwater runoff, and domestic wastewater. If this wastewater is not properly treated, it can cause significant pollution. To address this issue, existing technologies employ construction water recycling facilities to recycle and reuse construction wastewater. For example, patent number CN108946832A discloses a device for recycling rainwater and wastewater from building construction, relating to the field of wastewater recycling technology. The device includes a water collection plate and a filter chamber. One end of a water supply pipe is fixedly installed in the middle of the water collection plate, and one side of the water supply pipe is fixedly connected to one end of a wastewater pipe. A first support plate is fixedly installed at the bottom of the filter chamber, and a purification chamber is located above the first support plate. First pulleys are movably connected to both sides of the lower surface of the purification chamber, and both first pulleys are in contact with the upper surface of the first support plate. This building construction rainwater and wastewater recycling equipment works in two ways. First, it collects rainwater through a ring-shaped collection plate for easy collection. Second, it transports the rainwater to a filtration chamber via a water pipe. A wastewater pipe is fixedly connected to one side of the water pipe, allowing wastewater to enter the filtration chamber. While this equipment has certain advantages, it still has the following drawbacks in actual use:

[0003] 1. In existing construction site water recycling facilities, the wastewater generated at construction sites is relatively mixed. During recycling, the silt and debris in the wastewater will settle in the conveying channel, causing blockage of the wastewater conveying channel, requiring frequent cleaning and increasing cleaning and maintenance costs.

[0004] 2. Existing construction site water recycling facilities cannot simultaneously handle wastewater generated from multiple construction sites, resulting in limited wastewater treatment capacity. Summary of the Invention

[0005] The purpose of this invention is to provide a water recycling system for construction sites to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a water recycling system for construction sites, comprising a water collection mechanism and a filtration mechanism. The water collection mechanism includes a water collection pipe assembly, a sewage discharge assembly disposed in the middle of the water collection pipe assembly, and a conveying pipe assembly disposed at the lower end of the water collection pipe assembly. The filtration mechanism includes an inlet pipe fixedly connected to the side of the conveying pipe assembly, a filter pool assembly fixedly connected to the side of the inlet pipe, and a sludge discharge assembly disposed on the side of the filter pool assembly.

[0007] Preferably, the water collection pipe assembly includes a square-shaped tubular water collection pipe, and a V-shaped groove structure water collection trough is provided at the top of the water collection pipe. A water drain plate is attached to the upper end of the water collection trough, and water passage holes I are evenly distributed on the wall of the water drain plate.

[0008] Preferably, corner sealing plates are fixedly fastened at the four corners of the water collection pipe and at the upper end of the water collection trough, and guide grooves are symmetrically opened on the left and right sides of the water collection pipe wall.

[0009] Preferably, the sewage discharge assembly includes guide columns fixedly installed at the lower end of the corner sealing plate and located at the three included angle positions of the water collection pipe, and a drive motor fixedly installed at the upper end of the corner sealing plate at the remaining included angle positions of the water collection pipe. The lower end of the drive motor main shaft is fixedly connected to the middle of the water collection pipe, and the lower end of the rotating shaft is fixedly connected to a traction column. Spacing baffles are evenly distributed from top to bottom on the outer circle of the traction column.

[0010] Preferably, a drain plate is slidably fitted in the middle of the water collection pipe, and sliders that are slidably fitted with guide grooves are fixed on both sides of the drain plate. Rope holes are symmetrically opened on the upper and lower sides of the middle of the drain plate. Limiting pipes are fixedly connected to the front and rear ends of the rope holes, and adjusting screws are screwed on the upper and lower sides of the limiting pipes.

[0011] A traction rope I is threaded through the middle of the rope hole at the upper end of the sewage discharge plate, and a traction rope II is threaded through the middle of the rope hole at the lower end of the sewage discharge plate. One end of the traction rope I is fixedly wound around the upper end of the traction column, and one end of the traction rope II is fixedly wound around the lower end of the traction column. The winding directions of the traction rope II and the traction rope I on the outer circle of the traction column are opposite.

[0012] Preferably, the conveying pipeline assembly includes a lower conveying pipe fixedly connected to the bottom of the four corners of the water collection pipe, a branch water collection pipe fixedly connected to the bottom of the lower conveying pipe, a main water collection pipe fixedly connected to the end of the branch water collection pipe, and a sewage pump fixedly installed in the middle of the main water collection pipe. The inlet pipe is fixedly connected to the outer port of the main water collection pipe.

[0013] Preferably, the filter tank assembly includes a filter box with a tank structure that is fixedly connected to the other end of the water inlet pipe. The lower middle end of the tank of the filter box is fixedly provided with an inclined filter support plate, and water passage holes II are evenly distributed on the wall of the filter support plate. The upper end of the filter support plate is provided with a percolation plate, and a pressure plate is pressed on the upper end of the percolation plate. The upper end of the pressure plate at the four corners is fixedly connected with a lifting adjustment seat. The upper corner of the filter box is fixedly provided with an adjustment support seat, and an adjustment screw is screwed into the middle of the adjustment support seat. The lower end of the adjustment screw is fitted with the upper end of the lifting adjustment seat.

[0014] A tilting support plate is horizontally fixed to one side of the upper end of the filter box, and a mud discharge port is opened below the tilting support plate and on the side wall of the filter box.

[0015] A drain pipe is fixedly connected to the wall of the filter box and to the lower end of the filter support plate, and a water valve is fixedly installed at the outer port of the drain pipe.

[0016] Preferably, the sludge discharge assembly includes a sealing plate hinged to the upper part of the outer port of the sludge discharge port, and a protrusion on the side of the sealing plate that engages with the sludge discharge port is provided. Hinge seats I are symmetrically provided on the outer side of the sealing plate. Hinge seats II are symmetrically provided on the left and right sides of the lower end face of the flip support plate. A telescopic arm is connected between the hinge seats I and the hinge seats II. The upper and lower ends of the telescopic arm are respectively hinged to the hinge seats I and the hinge seats II.

[0017] Preferably, the present invention also relates to a method for water recycling at a construction site, the process specifically including the following steps:

[0018] Step 1: Guide the water collection, introduce the building production water, alluvial rainwater and domestic water into the water collection tank, and then the water flows along the water passage hole I on the drain plate into the water collection pipe;

[0019] Step 2: Traction and diversion. Start the drive motor so that its main shaft drives the rotating shaft and traction column to rotate alternately in the forward and reverse directions. During the rotation, the rotation of the traction column drives the traction rope I and traction rope II to rotate, so that one rope is in the release state and the other rope is in the winding state. Then, the sewage discharge plate is pulled to move back and forth along the guide groove in the water collection pipe, so that the wastewater in the water collection pipe moves quickly to the lower conveying pipe at the end corner of the water collection pipe, so that the wastewater quickly flows into the lower conveying pipe.

[0020] Step 3: Guiding and conveying. The wastewater flowing into the lower conveying pipe is followed by the branch collection pipe and then collected at the main collection pipe.

[0021] Step 4: Centralized transport. Start the sewage pump to transport the wastewater from the collection pipe to the inlet pipe, and then along the inlet pipe into the filter box.

[0022] Step 5: Sedimentation and filtration. After the wastewater enters the filter box, it passes through the pressure plate and the permeate plate. The filtered clean water flows through the water passage II on the filter support plate into the clean water tank below the filter support plate.

[0023] Step 6: Recycling and storage. Connect the water valve to the external water pump through a water pipe, open the water valve, start the external water pump, and transport the clean water in the clean water tank to the clean water storage facility through the drain pipe to complete the recycling and filtration of wastewater.

[0024] Step 7: Remove sludge. After the wastewater filtration is completed, start the telescopic arm to retract, which will open the sealing plate from the outside of the sludge discharge port. Then, use the sludge scraper to clean the sludge on the pressure plate. The cleaned sludge will be discharged from the sludge discharge port to the outside of the filter box. After cleaning, start the telescopic arm to extend, so that the sealing plate is snapped back into the sludge discharge port.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a reasonable structural design and strong functionality, and has the following advantages:

[0026] 1. In this invention, the drive motor drives the rotating shaft and the traction column to connect the traction rope I and the traction rope II to drive the sewage discharge plate to quickly transport the wastewater in the collection pipe into the downward conveying pipe, so that the sludge and debris in the wastewater are transported together into the conveying pipe assembly. Therefore, blockage in the collection pipe is avoided, maintenance and cleaning costs are reduced, and sewage discharge efficiency is improved.

[0027] 2. In this invention, various types of wastewater generated at the construction site can be introduced into a collection tank for simultaneous wastewater recycling and treatment, thereby increasing the wastewater treatment capacity and efficiency. Attached Figure Description

[0028] Figure 1 This is an isometric view of the overall structure of the present invention;

[0029] Figure 2 Front view of the overall structure of the invention;

[0030] Figure 3 for Figure 2 Axonometric view of the cross-sectional structure at point AA;

[0031] Figure 4 for Figure 3 Enlarged schematic diagram of the local structure at point E in the middle;

[0032] Figure 5 for Figure 3 Enlarged schematic diagram of the local structure at point F;

[0033] Figure 6 for Figure 3 Enlarged schematic diagram of the local structure at point G;

[0034] Figure 7 for Figure 2 Axonometric view of the cross-sectional structure at point BB;

[0035] Figure 8 for Figure 2 Axonometric view of the cross-sectional structure at point CC;

[0036] Figure 9 for Figure 8 Enlarged schematic diagram of the local structure at point H;

[0037] Figure 10 This is a left view of the overall structure of the present invention;

[0038] Figure 11 for Figure 10 Axonometric view of the cross-sectional structure at point DD;

[0039] Figure 12 for Figure 11 Enlarged schematic diagram of the local structure at point I;

[0040] Figure 13 for Figure 11 Enlarged schematic diagram of the local structure at point J.

[0041] In the diagram: 1. Water collection pipe assembly; 2. Sewage discharge assembly; 3. Conveying pipe assembly; 4. Inlet pipe; 5. Filter tank assembly; 6. Sludge discharge assembly; 101. Water collection pipe; 102. Water collection trough; 103. Drain plate; 104. Water passage hole I; 105. Guide groove; 106. Corner sealing plate; 201. Guide column; 202. Drive motor; 203. Rotating shaft; 204. Traction column; 205. Spacer baffle; 206. Sewage discharge plate; 207. Sliding block; 208. Rope threading hole; 209. Limiting tube; 210. Adjusting screw; 211. Traction rope 1; 212, Traction Rope II; 301, Lower Conveying Pipe; 302, Branch Water Collection Pipe; 303, Main Water Collection Pipe; 304, Sewage Pump; 501, Filter Box; 502, Filter Support Plate; 503, Water Passage Hole II; 504, Percolation Plate; 505, Pressure Plate; 506, Lifting Adjustment Seat; 507, Adjustment Support Seat; 508, Adjustment Screw; 509, Sludge Discharge Port; 510, Tilting Support Plate; 511, Drainage Pipe; 512, Water Valve; 601, Sealing Plate; 602, Hinge Seat I; 603, Hinge Seat II; 604, Telescopic Arm. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1 to 13 This invention provides a technical solution: a water recycling system for construction sites, comprising a water collection mechanism and a filtration mechanism. The water collection mechanism includes a water collection pipe assembly 1, a sewage discharge assembly 2 disposed in the middle of the water collection pipe assembly 1, and a conveying pipe assembly 3 disposed at the lower end of the water collection pipe assembly 1. The filtration mechanism includes an inlet pipe 4 fixedly connected to the side of the conveying pipe assembly 3, a filter pool assembly 5 fixedly connected to the side of the inlet pipe 4, and a sludge discharge assembly 6 disposed on the side of the filter pool assembly 5. The water collection pipe assembly 1 collects wastewater generated from construction water use, the sewage discharge assembly 2 rapidly conveys wastewater flowing into the water collection pipe assembly 1, and the conveying pipe assembly 3 collects and conveys wastewater from the water collection pipe assembly 1 into the filter pool assembly 5. The filter pool assembly 5 performs sedimentation filtration on the wastewater input from the inlet pipe 4, filtering clean water from the lower end of the filter pool assembly 5. The sludge discharge assembly 6 facilitates the cleaning of sludge generated by the filter pool assembly 5 during wastewater filtration.

[0044] Furthermore, the water collection pipe assembly 1 includes a square-shaped tubular water collection pipe 101, and a V-shaped groove structure water collection trough 102 is provided at the top of the water collection pipe 101. A drain plate 103 is attached to the upper end of the water collection trough 102, and water passage holes I 104 are evenly distributed on the wall of the drain plate 103. The water collection trough 102 serves as a wastewater collection point, the drain plate 103 serves as a support and protection point, and the water passage holes I 104 serve as a wastewater discharge point. During operation, wastewater is introduced into the water collection trough 102 through a ditch or pipe. After entering the water collection trough 102, the wastewater flows down into the water collection pipe 101 through the water passage holes I 104 on the drain plate 103.

[0045] Furthermore, corner sealing plates 106 are fixedly fastened at the four corners of the water collection pipe 101 and at the upper end of the water collection trough 102. Guide grooves 105 are symmetrically opened on the left and right sides of the pipe wall of the water collection pipe 101. The corner sealing plates 106 provide a fixed support for the guide post 201 and the drive motor 202, and the guide grooves 105 provide a guiding function for the drain plate 206.

[0046] Furthermore, the sewage discharge assembly 2 includes guide posts 201 fixedly installed at the lower end of the corner sealing plate 106 and located at the three included angle positions of the water collection pipe 101. A drive motor 202 is fixedly installed at the upper end of the corner sealing plate 106 at the remaining included angle positions of the water collection pipe 101. The lower end of the main shaft of the drive motor 202 is fixedly connected to the middle of the water collection pipe 101 with a rotating shaft 203. The lower end of the rotating shaft 203 is fixedly connected to a traction post 204. Spacer baffles 205 are evenly distributed from top to bottom on the outer circle of the traction post 204. The guide posts 201 provide support and guidance for the traction ropes I 211 and II 212, facilitating the traction movement of the traction ropes II 212 and I 211 within the water collection pipe 101. The drive motor 202 provides a driving function relative to the rotating shaft 203 and the traction post 204. The spacer baffles 205 hold the traction ropes I 211 and II 212 in place. 212 maintains a stable winding direction during the winding process to prevent it from slipping off the traction column 204.

[0047] Furthermore, a drain plate 206 is slidably mounted in the middle of the water collection pipe 101. Sliding blocks 207 that are slidably mounted on both sides of the drain plate 206 are fixedly mounted to the guide groove 105. Rope holes 208 are symmetrically opened on the upper and lower sides of the middle of the drain plate 206. The front and rear ends of the rope holes 208 are fixedly connected to the limit tubes 209, and adjusting screws 210 are screwed on the upper and lower sides of the limit tubes 209.

[0048] A traction rope I 211 is threaded through the upper end of the drain plate 206 and the middle of the rope hole 208. A traction rope II 212 is threaded through the lower end of the drain plate 206 and the middle of the rope hole 208. One end of the traction rope I 211 is fixedly wound around the upper end of the traction post 204, and one end of the traction rope II 212 is fixedly wound around the lower end of the traction post 204. The winding direction of the traction rope II 212 on the outer circle of the traction post 204 is opposite to that of the traction rope I 211. The rope hole 208 and the limiting tube 209 serve as guides for the traction rope I 211 and the traction rope II 212, while the adjusting screw 210 crimps and fixes the traction rope I 211 and the traction rope II 212 within the limiting tube 209, thus securing the traction ropes I 211 and II 212. 212 is fixed together with the drain plate 206. During operation, the drive motor 202 is started to drive the rotating shaft 203 and the traction column 204 to rotate, thereby causing the traction column 204 to pull the traction rope I 211 and the traction rope II 212 to rotate synchronously around the traction column 204. One of the traction ropes I 211 and II 212 is unwound while the other is wound up. This causes the traction ropes I 211 and II 212 to pull the drain plate 206 along the guide groove 105 and guide it into the water collection pipe 101, pushing the wastewater to the upper port of the lower conveying pipe 301 at the end corner of the water collection pipe 101. This allows the wastewater to enter the lower conveying pipe 301 as quickly as possible. During this process, the sediment in the wastewater will be scraped into the lower conveying pipe 301 by the drain plate 206, thereby preventing the sediment in the wastewater from accumulating in the water collection pipe 101 and causing blockage of the wastewater conveyance.

[0049] Furthermore, the conveying pipeline assembly 3 includes a lower conveying pipe 301 fixedly connected to the bottom of the four corners of the water collection pipe 101. The bottom of the lower conveying pipe 301 is horizontally fixedly connected to a branch water collection pipe 302. The end of the branch water collection pipe 302 is fixedly connected to a main water collection pipe 303. A sewage pump 304 is fixedly installed in the middle of the main water collection pipe 303. The inlet pipe 4 is fixedly connected to the outer port of the main water collection pipe 303. The lower conveying pipe 301, the branch water collection pipe 302 and the main water collection pipe 303 play a role in collecting and conveying wastewater. The sewage pump 304 conveys the wastewater that flows into the main water collection pipe 303 to the inlet pipe 4.

[0050] Furthermore, the filter tank assembly 5 includes a filter box 501 with a tank structure that is fixedly connected to the other end of the water inlet pipe 4. The lower middle end of the tank of the filter box 501 is fixedly provided with an inclined filter support plate 502, and water passage holes II 503 are evenly distributed on the wall of the filter support plate 502. The upper end of the filter support plate 502 is provided with a permeation plate 504, and a pressure plate 505 is pressed on the upper end of the permeation plate 504. The upper end of the pressure plate 505 at the four corners is fixedly connected with a lifting adjustment seat 506. The upper end of the filter box 501 is fixedly provided with an adjustment support seat 507 at the four corners, and an adjustment screw 508 is screwed into the middle of the adjustment support seat 507. The lower end of the adjustment screw 508 is fitted with the upper end of the lifting adjustment seat 506.

[0051] A flip support plate 510 is horizontally fixedly connected to one side of the upper end of the filter box 501, and a mud discharge port 509 is opened below the flip support plate 510 and on the side wall of the filter box 501.

[0052] A drain pipe 511 is fixedly connected to the wall of the filter box 501 and to the lower end of the filter support plate 502. A water valve 512 is fixedly installed at the outer port of the drain pipe 511. The filter support plate 502 at the lower end of the filter box 501 divides the filter box 501 into upper and lower tanks. The tank at the upper end of the filter support plate 502 is a wastewater settling tank, responsible for the settling and filtration of wastewater. The tank at the lower end of the filter support plate 502 is a clear water tank. After the wastewater in the wastewater settling tank is filtered by the pressure plate 505 and the permeate plate 504, the sludge is retained at the upper end of the pressure plate 505, while the filtered clear water passes through the water passage II. 503 enters the clear water tank. Water valve 512 is connected to the external water pump through a water pipe. When working, the external water pump is started so that the clear water in the clear water tank at the lower end of the filter support plate 502 is transported to the clear water storage facility through the drain pipe 511, completing the filtration and recycling of construction wastewater. The recycled clear water can be reused as construction water, realizing the recycling of construction water.

[0053] Furthermore, the sludge discharge assembly 6 includes a sealing plate 601 hinged to the upper part of the outer port of the sludge discharge port 509, and a boss that engages with the sludge discharge port 509 is provided on the side of the sealing plate 601. Hinge seats I 602 are symmetrically provided on the outer side of the sealing plate 601, and hinge seats II 603 are symmetrically provided on the left and right sides of the lower end face of the flip support plate 510. A telescopic arm 604 is connected between the hinge seats I 602 and the hinge seats II 603. The upper and lower ends of the telescopic arm 604 are hinged to the hinge seats I 602 and the hinge seats II 603, respectively. The sludge discharge port 509 facilitates the discharge of sludge retained on the pressure plate 505, and the opening and closing of the sealing plate 601 outside the sludge discharge port 509 is controlled by the extension and retraction of the telescopic arm 604.

[0054] Furthermore, the present invention also relates to a method for water recycling at a construction site, the process specifically including the following steps:

[0055] Step 1: Guide the water collection, introduce the building production water, alluvial rainwater and domestic water into the water collection tank, and then the water flows along the water passage hole I on the drain plate into the water collection pipe;

[0056] Step 2: Traction and diversion. Start the drive motor so that its main shaft drives the rotating shaft and traction column to rotate alternately in the forward and reverse directions. During the rotation, the rotation of the traction column drives the traction rope I and traction rope II to rotate, so that one rope is in the release state and the other rope is in the winding state. Then, the sewage discharge plate is pulled to move back and forth along the guide groove in the water collection pipe, so that the wastewater in the water collection pipe moves quickly to the lower conveying pipe at the end corner of the water collection pipe, so that the wastewater quickly flows into the lower conveying pipe.

[0057] Step 3: Guiding and conveying. The wastewater flowing into the lower conveying pipe is followed by the branch collection pipe and then collected at the main collection pipe.

[0058] Step 4: Centralized transport. Start the sewage pump to transport the wastewater from the collection pipe to the inlet pipe, and then along the inlet pipe into the filter box.

[0059] Step 5: Sedimentation and filtration. After the wastewater enters the filter box, it passes through the pressure plate and the permeate plate. The filtered clean water flows through the water passage II on the filter support plate into the clean water tank below the filter support plate.

[0060] Step 6: Recycling and storage. Connect the water valve to the external water pump through a water pipe, open the water valve, start the external water pump, and transport the clean water in the clean water tank to the clean water storage facility through the drain pipe to complete the recycling and filtration of wastewater.

[0061] Step 7: Remove sludge. After the wastewater filtration is completed, start the telescopic arm to retract, which will open the sealing plate from the outside of the sludge discharge port. Then, use the sludge scraper to clean the sludge on the pressure plate. The cleaned sludge will be discharged from the sludge discharge port to the outside of the filter box. After cleaning, start the telescopic arm to extend, so that the sealing plate is snapped back into the sludge discharge port.

[0062] In this invention, wastewater generated from construction water use is collected through water collection pipe assembly 1, and this wastewater is quickly transported to conveying pipe assembly 3 through sewage discharge assembly 2. The wastewater collected at the collection pipe 303 is then transported to the inlet pipe 4 through sewage discharge pump 304. The wastewater in the inlet pipe 4 enters the filter box 501 and is filtered by pressure plate 505 and permeate plate 504. The resulting clean water flows through water passage II 503 into the clean water tank at the lower end of filter support plate 502. Then, the clean water is transported from the clean water tank to the clean water storage facility through an external water pump connected to water valve 512. This recycled and stored clean water can be reused for construction water use, realizing the recycling of construction water.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water recycling system for construction sites, characterized in that: It includes a water collection mechanism and a filtration mechanism. The water collection mechanism includes a water collection pipe assembly (1), a sewage discharge assembly (2) provided in the middle of the water collection pipe assembly (1), and a conveying pipe assembly (3) provided at the lower end of the water collection pipe assembly (1). The filtration mechanism includes an inlet pipe (4) fixedly connected to the side of the conveying pipe assembly (3), a filter pool assembly (5) fixedly connected to the side of the inlet pipe (4), and a sludge discharge assembly (6) provided on the side of the filter pool assembly (5). The water collection pipe assembly (1) includes a square-shaped tubular water collection pipe (101), and a V-shaped groove structure water collection trough (102) is provided on the top of the water collection pipe (101). A water collection plate (103) is attached to the upper end of the water collection trough (102), and water passage holes I (104) are evenly distributed on the wall of the water collection plate (103). Corner sealing plates (106) are fixedly fastened at the four corners of the water collection pipe (101) and at the upper end of the water collection tank (102). Guide grooves (105) are symmetrically opened on the left and right sides of the pipe wall of the water collection pipe (101). The sewage discharge assembly (2) includes guide posts (201) fixedly installed at the lower end of the corner sealing plate (106) and at the three included angle positions of the water collection pipe (101), and a drive motor (202) fixedly installed at the upper end of the corner sealing plate (106) at the remaining included angle positions of the water collection pipe (101). The lower end of the main shaft of the drive motor (202) is fixedly connected to the middle of the water collection pipe (101) with a rotating shaft (203). The lower end of the rotating shaft (203) is fixedly connected to a traction column (204), and spacer baffles (205) are evenly distributed from top to bottom on the outer circle of the traction column (204). The water collection pipe (101) has a drain plate (206) slidingly mounted in the middle. The drain plate (206) has sliders (207) fixed on both sides that slide with the guide groove (105). The drain plate (206) has rope holes (208) symmetrically opened on the upper and lower sides in the middle. The front and rear ends of the rope holes (208) are fixedly connected to the limit tubes (209), and the limit tubes (209) are screwed with adjusting screws (210) on the upper and lower sides. A traction rope I (211) is threaded through the upper end of the drain plate (206) and in the middle of the rope hole (208). A traction rope II (212) is threaded through the lower end of the drain plate (206) and in the middle of the rope hole (208). One end of the traction rope I (211) is fixedly wound around the upper end of the traction column (204), and one end of the traction rope II (212) is fixedly wound around the lower end of the traction column (204). The winding directions of the traction rope II (212) and the traction rope I (211) on the outer circle of the traction column (204) are opposite.

2. The water recycling system for construction sites according to claim 1, characterized in that: The conveying pipeline assembly (3) includes a lower conveying pipe (301) with the bottom of the water collection pipe (101) fixedly connected downwards at the four corners. The bottom of the lower conveying pipe (301) is horizontally fixedly connected to a branch water collection pipe (302). The end of the branch water collection pipe (302) is fixedly connected to a main water collection pipe (303). A sewage pump (304) is fixedly installed in the middle of the main water collection pipe (303). The inlet pipe (4) is fixedly connected to the outer port of the main water collection pipe (303).

3. A water recycling system for construction sites according to claim 2, characterized in that: The filter tank assembly (5) includes a filter box (501) with a tank structure that is fixedly connected to the other end of the water inlet pipe (4). The lower middle end of the tank of the filter box (501) is fixedly provided with an inclined filter support plate (502), and water passage holes II (503) are evenly distributed on the wall of the filter support plate (502). The upper end of the filter support plate (502) is provided with a percolation plate (504), and a pressure plate (505) is pressed on the upper end of the percolation plate (504). The upper end of the pressure plate (505) is fixedly connected with a lifting adjustment seat (506) at the four corners. The upper end of the filter box (501) is fixedly provided with an adjustment support seat (507), and an adjustment screw is screwed in the middle of the adjustment support seat (507). The lower end of the adjustment screw is fitted with the upper end of the lifting adjustment seat (506). A flip support plate (510) is horizontally fixedly connected to one side of the upper end of the filter box (501), and a mud discharge port (509) is opened below the flip support plate (510) and on the side wall of the filter box (501). A drain pipe (511) is fixedly connected to the wall of the filter box (501) and to the lower end of the filter support plate (502), and a water valve (512) is fixedly installed at the outer port of the drain pipe (511).

4. A water recycling system for construction sites according to claim 3, characterized in that: The sludge discharge assembly (6) includes a sealing plate (601) hinged to the upper part of the outer port of the sludge discharge port (509), and a boss that is engaged with the sludge discharge port (509) is provided on the side of the sealing plate (601). The outer side of the sealing plate (601) is symmetrically provided with hinge seats I (602). The lower end face of the flip support plate (510) is symmetrically provided with hinge seats II (603) on the left and right sides. A telescopic arm (604) is connected between the hinge seats I (602) and the hinge seats II (603). The upper and lower ends of the telescopic arm (604) are respectively hinged to the hinge seats I (602) and the hinge seats II (603).

5. The method of using a water recycling system at a construction site according to claim 4, characterized in that: The method specifically includes the following steps: Step 1: Guide the water collection, introduce the building production water, alluvial rainwater and domestic water into the water collection tank, and then the water flows along the water passage hole I on the drain plate into the water collection pipe; Step 2: Traction and diversion. Start the drive motor so that its main shaft drives the rotating shaft and traction column to rotate alternately in the forward and reverse directions. During the rotation, the rotation of the traction column drives the traction rope I and traction rope II to rotate, so that one rope is in a relaxed state and the other rope is in a wound state. Then, the sewage discharge plate is pulled to move back and forth along the guide groove in the water collection pipe, so that the wastewater in the water collection pipe moves quickly to the lower conveying pipe at the end corner of the water collection pipe, so that the wastewater quickly flows into the lower conveying pipe. Step 3: Guided transport. The wastewater flowing into the lower transport pipe is followed by the branch collection pipe and then collected at the main collection pipe. Step 4: Centralized transport. Start the sewage pump to transport the wastewater from the collection pipe to the inlet pipe, and then along the inlet pipe into the filter box. Step 5: Sedimentation and filtration. After the wastewater enters the filter box, it passes through the pressure plate and the permeate plate. The filtered clean water flows through the water passage II on the filter support plate into the clean water tank below the filter support plate. Step 6: Recycling and storage. Connect the water valve to the external water pump through a water pipe, open the water valve, start the external water pump, and transport the clean water in the clean water tank to the clean water storage facility through the drain pipe to complete the recycling and filtration of wastewater. Step 7: Remove sludge. After the wastewater filtration is completed, start the telescopic arm to retract, which will open the sealing plate from the outside of the sludge discharge port. Then, use the sludge scraper to clean the sludge on the pressure plate. The cleaned sludge will be discharged from the sludge discharge port to the outside of the filter box. After cleaning, start the telescopic arm to extend, so that the sealing plate is snapped back into the sludge discharge port.

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