Drainage device for construction engineering

Abstract

The invention discloses a drainage device for construction engineering, and relates to the field of water supply and drainage, the drainage device comprises a drainage tank, a sludge tank located on one side, a treatment mechanism located in the drainage cavity, an inclined plate in lap joint with the inner top of the drainage tank, and a through groove formed in the position, located in the drainage cavity, of the inclined plate; the top end of the partition plate is fixedly connected with the lower surface of the inclined plate, a filter screen is installed on the partition plate close to the inclined plate, a collecting box is arranged in the sludge box, and inner channel teeth are arranged on the outer wall of one face of the collecting box; the treatment mechanism is composed of a reverse cleaning assembly, a transmission assembly and a supporting plate, by arranging the deposition cavity, sludge in sewage can be precipitated at the bottom of the cavity, the possibility of blockage of a follow-up drainage pipeline is greatly reduced, upper-layer sewage enters the discharge cavity through the filter screen, preliminary filtration and purification of the sewage are achieved, and the sewage treatment efficiency is improved. The difficulty and load of subsequent sewage treatment are reduced, and blockage of the filter screen caused by impurities is reduced.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of water supply and drainage, and specifically to a drainage device for construction engineering. Background Art

[0002] Drainage devices for construction projects refer to equipment used to collect, transport, treat and discharge rainwater, sewage and other wastewater in various types of construction projects. They play an important role in construction projects and can effectively remove accumulated water and prevent water disasters from damaging buildings and construction sites. They also contribute to the rational use of water resources and environmental protection.

[0003] A drainage device for construction projects described in the prior art includes a sunken drainage box, a water inlet pipe, a large drainage pipe, a solenoid valve, a water collecting box, a filter screen, a control mechanism, an anti-backflow structure and a drainage-aiding mechanism. A plurality of water inlet pipes are evenly spaced and connected to the sunken drainage box, and the water inlet pipes are connected to other drainage pipes. A water collecting box is connected to the sunken drainage box, and a large drainage pipe is connected to the bottom of the sunken drainage box. A solenoid valve is provided in the large drainage pipe. A filter screen is embedded in the lower left side of the water collecting box, and a control mechanism for controlling the opening and closing of the solenoid valve is provided in the water collecting box.

[0004] Although the above technology can block the water inlet pipe through the baffle plate to prevent water from flowing back to the water inlet pipe when water accumulates inside the sunken drainage box, and then flowing back to the sewage drainage pipe to prevent sewage backflow, it contains a large number of large particles, fibrous substances or other impurities that are easy to entangle and accumulate, which is more likely to cause the filter to be blocked. In addition, the increase of sewage in the water collection tank will also lead to sludge deposition, causing the drainage pipe to be blocked, resulting in poor drainage and affecting drainage efficiency. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a drainage device for construction projects to solve the technical problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A drainage device for construction engineering, comprising a drainage box, a sludge box located on one side, the interior of the drainage box is divided into a sedimentation chamber and a drainage chamber by a partition, a processing mechanism is located in the drainage chamber, the inner top of the drainage box is overlapped with an inclined plate, the inclined plate is provided with a through groove at the drainage chamber, the top of the partition is fixedly connected to the lower surface of the inclined plate, a filter screen is installed on the partition near the inclined plate, a collection box is provided inside the sludge box, and an outer wall of one side of the collection box is provided with an inner track tooth; The processing mechanism consists of a reverse cleaning component, a transmission component, and a support plate. The reverse cleaning component is located below the through groove. The reverse cleaning component is connected to the inner channel teeth through the transmission component. The reverse cleaning component is used to collect rainwater, and the reverse cleaning component follows the lifting of the collection box through the transmission component to clean the filter screen. This design effectively solves the problem of poor drainage caused by filter screen blockage and sludge deposition. Through the combination of the sedimentation chamber and the filter screen, the preliminary treatment of sewage is realized, and the drainage efficiency is improved.

[0007] Specifically, in this technical solution, the reverse cleaning component includes a water storage tank with an open top. The water storage tank is connected to a downward-sloping square flushing pipe near the outer wall of the filter screen, and the outlet of the square flushing pipe is located above the filter screen. The reverse cleaning component uses the rainwater collected in the water storage tank to flush the filter screen in the reverse direction, which not only saves water resources but also realizes the recycling of water resources and reduces the dependence on municipal water supply.

[0008] Specifically, in this technical solution, a push plate is provided inside the water storage tank. A square sleeve is fixed to the bottom of the push plate. The square sleeve penetrates the bottom wall of the water storage tank, and a lead screw is provided in the square sleeve. The bottom end of the lead screw is rotatably connected to the inner bottom wall of the drainage chamber. Through the cooperation of the push plate and the lead screw, the orderly movement of the water in the water storage tank is realized, providing a stable pressure and flow rate for reverse flushing and improving the flushing effect.

[0009] Specifically, in this technical solution, the support plate is located on one side of the square sleeve. The outer wall of the support plate is fixedly connected to the inner wall of the drainage chamber and the bottom wall of the water storage tank respectively. The design of the support plate improves the stability of the entire reverse cleaning component, ensures the stable operation of each component during the flushing process, and extends the service life of the equipment.

[0010] Specifically, in this technical solution, through grooves communicating with each other are provided on the outer walls of the drainage tank and the sludge tank. The inner channel teeth are located at the through grooves. Pull rods are symmetrically fixed to the top of the collection box, and the top ends of the two pull rods are fixedly connected to the sealing plate located on the top of the sludge tank by screws. The design of the through grooves and the pull rods makes the lifting operation of the collection box more convenient, realizes the centralized collection and treatment of sludge, and reduces the environmental pollution caused by sludge.

[0011] Specifically, in this technical solution, the transmission component includes a first gear rotatably installed in the through groove. The tooth surface of the first gear located inside the drainage chamber is meshed with a second gear. A shaft rod is fixedly penetrated through the second gear. A rotating shaft is provided parallel to the lower part of the shaft rod. A worm is fixedly installed at the middle end of the rotating shaft. One side of the worm is meshed with a worm gear. The worm gear is fixedly sleeved on the bottom of the lead screw provided in the reverse cleaning component. The transmission component converts the lifting movement of the collection box into the action of the reverse cleaning component through the cooperation of gears and worm gears, realizes automatic cleaning, and reduces manual intervention.

[0012] Specifically, both ends of the shaft rod and the rotating shaft are rotatably connected to the inner wall of the drainage cavity. Sprockets are fixedly sleeved on both the shaft rod and the rotating shaft, and the two sprockets are connected by a transmission chain. The design of the sprockets and the transmission chain improves the stability and efficiency of the transmission, ensures the synchronous operation of the entire transmission system, and enhances the reliability of the equipment.

[0013] Specifically, a plurality of sewage pipes are provided on one side of the drainage tank, and the plurality of sewage pipes are all communicated with the sedimentation cavity. A drain pipe is provided below the drainage tank, one end of the drain pipe is communicated with the bottom of the drainage cavity, a grid-shaped cover plate is lapped on the top of the drainage tank, and a guiding plate is fixed on one side of the partition plate located in the drainage cavity, and the guiding plate is located below the filter screen. The design of the plurality of sewage pipes improves the sewage inlet efficiency, and the settings of the grid-shaped cover plate and the guiding plate effectively prevent large sundries from entering the drainage tank and protect the normal operation of the equipment.

[0014] Specifically, a capacitive liquid level gauge is provided below the inclined plate in the sedimentation cavity, a sludge pump is provided on one side of the capacitive liquid level gauge close to the partition plate, the sludge pump is connected to the suction port of the sludge pump on the lower surface of the inclined plate through a mounting seat, and the port of the sludge suction pipe is spaced 5 cm from the bottom wall of the sedimentation cavity. The cooperation of the capacitive liquid level gauge and the sludge pump realizes the automatic monitoring and extraction of the sludge liquid level, timely clears the sludge in the sedimentation cavity, prevents blockage, and improves the drainage efficiency.

[0015] Specifically, a sewage discharge pipe is provided above the inclined plate. One end of the sewage discharge pipe sequentially penetrates through the drainage tank and the sludge tank, and the other end of the sewage discharge pipe penetrates through the inclined plate and the mounting seat and is connected to the output port of the sludge pump. The design of the sewage discharge pipe ensures that the sludge can be smoothly transported into the collection box in the sludge tank, realizes the centralized treatment of the sludge, and reduces environmental pollution.

[0016] In summary, the present invention mainly has the following beneficial effects: By setting the sedimentation cavity, the sludge in the sewage can precipitate at the bottom of the cavity, greatly reducing the possibility of subsequent drainage pipe blockage. The upper-layer sewage enters the discharge cavity through the filter screen, realizing the preliminary filtration and purification of the sewage, reducing the difficulty and load of subsequent sewage treatment, and reducing the blockage of the filter screen caused by impurities; In rainy days, rainwater is guided by the inclined plate and the through groove, and part of the rainwater is collected by the water storage tank, effectively relieving the pressure on the drainage system. The height of the sludge is monitored by a capacitive liquid level gauge. The sludge pump pumps the sludge out from the bottom of the precipitation chamber through the sewage suction pipe, and then it is transported to the collection box in the sludge tank through the sewage discharge pipe. With the regular lifting and cleaning of the collection box, the inner channel teeth are engaged with the first gear in the transmission component, thereby driving the second gear, the shaft rod, the rotating shaft, the worm and the worm wheel to rotate. Finally, the lead screw rotates, driving the push plate to move in the water storage tank, and the stored rainwater flows out through the square flushing pipe to reversely clean the filter screen, ensuring the smoothness of the filter screen and guaranteeing the drainage efficiency. By making use of natural rainfall, it not only saves water resources but also improves the self-cleaning ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall structure of the device of the present invention; Figure 2 Schematic diagram of the front shaft measurement structure of the cross-section of the drainage tank and the sludge tank of the present invention; Figure 3 Schematic diagram of the oblique shaft measurement structure of the cross-section of the drainage tank and the sludge tank of the present invention; Figure 4 For the present invention Figure 3 Front view structure schematic diagram; Figure 5 Schematic diagram of the position of the through groove of the present invention; Figure 6 Schematic diagram of the position of the inner channel teeth of the present invention; Figure 7 Schematic diagram of the structure of the reverse cleaning component and the transmission component of the present invention.

[0018] BRIEF DESCRIPTION OF THE DRAWINGS: 1. Drainage tank; 101. Inclined plate; 1011. Through groove; 102. Sewage pipe; 103. Partition board; 1031. Filter screen; 1032. Guide plate; 104. Through slot; 105. Capacitive liquid level gauge; 106. Drain pipe; 2. Sludge tank; 201. Collection box; 2011. Inner channel teeth; 202. Pull rod; 3. Sludge pump; 301. Sewage suction pipe; 302. Sewage discharge pipe; 4. Treatment mechanism; 5. Reverse cleaning component; 501. Water storage tank; 502. Square flushing pipe; 503. Push plate; 504. Square sleeve; 505. Lead screw; 6. Transmission component; 601. First gear; 602. Second gear; 6021. Shaft rod; 603. Rotating shaft; 604. Worm; 605. Worm wheel; 606. Sprocket; 6061. Transmission chain; 7. Support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.

[0020] Next, according to the overall structure of the present invention, its embodiments will be described. Embodiment

[0021] The present invention adopts a solar power supply system. In an open area nearby, solar panels are used to convert light energy into electrical energy, and a controller and a storage battery are used to provide stable power for the device, which has the advantages of environmental protection, energy conservation, and no pollution.

[0022] Please refer to Figures 1-6 As shown, a drainage device for construction projects includes a drainage tank 1, a sludge tank 2 located on one side, the interior of the drainage tank 1 is divided into a sedimentation chamber and a drainage chamber by a partition 103, a treatment mechanism 4 located in the drainage chamber, an inclined plate 101 is lapped on the inner top of the drainage tank 1, a through groove 1011 is provided at the inclined plate 101 in the drainage chamber, the top end of the partition 103 is fixedly connected to the lower surface of the inclined plate 101, a filter screen 1031 is installed on the partition 103 near the inclined plate 101, a collection box 201 is provided inside the sludge tank 2, an inner channel tooth 2011 is provided on one outer wall of the collection box 201, through grooves 104 are provided on the outer walls of both the drainage tank 1 and the sludge tank 2, the inner channel tooth 2011 is located at the through groove 104, and pull rods 202 are symmetrically fixed at the top of the collection box 201, and the top ends of the two pull rods 202 are fixedly screwed to a sealing plate located at the top of the sludge tank 2; A plurality of sewage pipes 102 are provided on one side of the drainage tank 1, and the plurality of sewage pipes 102 are all communicated with the sedimentation chamber. A drain pipe 106 is provided below the drainage tank 1, one end of the drain pipe 106 is communicated with the bottom of the drainage chamber, a grid-shaped cover plate is lapped on the top of the drainage tank 1, a guiding plate 1032 is fixed on one side of the partition 103 in the drainage chamber, and the guiding plate 1032 is located below the filter screen 1031; when maintenance is required for the sludge pump 3 and the capacitive liquid level gauge 105, the staff only needs to open the cover plate and then lift the inclined plate 101 to easily access the sludge pump 3 and the capacitive liquid level gauge 105, which is convenient for daily inspection and maintenance and ensures the long-term stable operation of the device.

[0023] The treatment mechanism 4 is composed of a reverse cleaning assembly 5, a transmission assembly 6, and a support plate 7. The reverse cleaning assembly 5 is located below the through groove 1011. The reverse cleaning assembly 5 is connected to the inner channel tooth 2011 through the transmission assembly 6. The reverse cleaning assembly 5 is used for collecting rainwater, and the reverse cleaning assembly 5 cleans the filter screen 1031 by following the lifting of the collection box 201 through the transmission assembly 6.

[0024] The drainage tank 1 and the sludge tank 2 are buried underground. The sewage pipe 102 is connected to the municipal drainage system, and the drain pipe 106 is connected to the underground drainage network. Sewage enters the sedimentation cavity through the sewage pipe 102. Large particulate impurities and sludge in the sewage begin to settle to the bottom of the cavity due to gravity. This process is achieved by gravitational sedimentation and does not require additional power equipment. As the amount of sewage increases, the sediment gradually accumulates. The sewage located in the upper layer enters the drainage cavity through the filter screen 1031. The filter screen 1031 further intercepts fine impurities to ensure the purification of the water quality in the drainage cavity. The purified water is discharged through the drain pipe 106. Thus, by setting up the sedimentation cavity, the sludge in the sewage can settle at the bottom of the cavity, greatly reducing the possibility of blockage of the subsequent drain pipe 106. The upper-layer sewage enters the discharge cavity through the filter screen 1031, achieving the preliminary filtration and purification of the sewage, reducing the difficulty and load of subsequent sewage treatment, and reducing the blockage caused by impurities to the filter screen 1031. As the sludge increases, it will be discharged into the collection box 201 for convenient unified treatment, avoiding environmental pollution caused by the random discharge of sludge. When the sludge in the collection box 201 reaches a certain amount, the staff lifts the top cover through the lifting device and lifts the collection box 201 through the pull rod 202, and the sludge is taken out accordingly. When the collection box 201 rises, it will drive the transmission component 6 through the inner channel teeth 2011, and the transmission component 6 drives the reverse cleaning component 5. When it rains, the rainwater flows through the inclined plate 101 to the through groove 1011 and converges to the reverse cleaning component 5. At this time, the reverse cleaning component 5 can push out the collected rainwater to conduct reverse flushing on the filter screen 1031, effectively removing the residual impurities on the filter screen 1031, reducing the wear of the impurities on the filter screen 1031, ensuring the continuous high efficiency of the filtering effect, and extending the service life. The design of the reverse cleaning component 5 utilizes natural rainfall, saving water resources and enhancing the self-cleaning ability.

[0025] Please refer to Figure 3 and Figure 4 As shown, a capacitive liquid level gauge 105 is provided below the inclined plate 101 in the sedimentation cavity. A sludge pump 3 is provided on one side of the capacitive liquid level gauge 105 close to the partition plate 103. The sludge pump 3 is connected to the suction port of the sludge pump 3 on the lower surface of the inclined plate 101 through a mounting seat by a sewage suction pipe 301. The port of the sewage suction pipe 301 is spaced 5 cm from the bottom wall of the sedimentation cavity. A sewage discharge pipe 302 is provided above the inclined plate 101. One end of the sewage discharge pipe 302 sequentially penetrates through the drainage tank 1 and the sludge tank 2, and the other end of the sewage discharge pipe 302 penetrates through the inclined plate 101 and the mounting seat and is connected to the output port of the sludge pump 3.

[0026] The capacitive level meter 105 measures the sludge deposition height based on the capacitance principle. When the sludge deposition height changes, the capacitance of the capacitive level meter 105 will also change accordingly. The position of the sludge interface is determined by detecting the change in capacitance, and the detected data is sent to the controller in real time for comparison with the set value. Once the set range is exceeded, the controller starts the sludge pump 3. The sludge pump 3 works to extract the sludge at the bottom of the sedimentation chamber through the sewage pipe 301, and transports it to the collection box 201 in the sludge box 2 through the sewage pipe 302. The entire process is automatically controlled to avoid frequent manual intervention.

[0027] See also Figure 4 and Figure 7 As shown, the reverse cleaning assembly 5 includes a water tank 501 with an opening on the top, and the water tank 501 is connected to a downwardly inclined square flushing pipe 502 near the outer wall of the filter 1031, and the water outlet of the square flushing pipe 502 is located above the filter 1031. A push plate 503 is provided inside the water tank 501, and a square sleeve 504 is fixed to the bottom of the push plate 503. The square sleeve 504 penetrates the bottom wall of the water tank 501, and a screw rod 505 is provided in the square sleeve 504. The bottom end of the screw rod 505 is rotatably connected to the bottom wall of the drainage cavity. The support plate 7 is located on one side of the square sleeve 504, and the outer wall of the support plate 7 is fixedly connected to the inner wall of the drainage cavity and the bottom wall of the water tank 501 respectively. The transmission assembly 6 includes a first gear 601 rotatably mounted in the through groove 104, the first gear 601 is meshingly connected with a second gear 602 on its tooth surface located in the drainage chamber, a shaft 6021 is fixedly penetrated in the second gear 602, a rotating shaft 603 is arranged parallel to the lower side of the shaft 6021, a worm 604 is fixedly mounted on the middle end of the rotating shaft 603, a worm wheel 605 is meshingly connected to one side of the worm 604, the worm wheel 605 is fixedly sleeved on the bottom of the lead screw 505 arranged in the reverse cleaning assembly 5, both ends of the shaft 6021 and the rotating shaft 603 are rotatably connected to the inner wall of the drainage chamber, a sprocket 606 is fixedly sleeved on the shaft 6021 and the rotating shaft 603, and the two sprockets 606 are connected by a transmission chain 6061.

[0028] When the sludge in the collection box 201 is regularly cleaned, the staff lifts the top cover through the lifting device. The top cover lifts the collection box 201 through the pull rod 202, and the sludge is taken out accordingly. When the collection box 201 rises, it drives the meshing first gear 601 to rotate through the inner channel teeth 2011. The first gear 601 drives the second gear 602 to rotate, and then drives the shaft rod 6021 to rotate. The shaft rod 6021 drives the rotating shaft 603 to rotate through the sprocket 606 and the transmission chain 6061, causing the worm 604 to rotate. The worm gear 605 rotates accordingly, driving the lead screw 505 to rotate. The square sleeve 504 moves upward following the rotation of the lead screw 505, and the push plate 503 rises accordingly, pushing the water in the water storage tank 501 upward. The water is sprayed out through the square flushing pipe 502 to reversely flush the filter screen 1031, effectively removing the attachments, ensuring the filtering effect, and guaranteeing the drainage efficiency.

[0029] The working principle of the present invention is as follows: The drainage box 1 and the sludge box 2 are buried underground, and the sewage pipe 102 is connected to the municipal drainage system. The drain pipe 106 is connected to the underground drainage network. Sewage enters the sedimentation cavity through the sewage pipe 102. Large particle impurities and sludge in the sewage start to settle to the bottom of the cavity due to gravity. As the amount of sewage increases, the sediment gradually accumulates. The sewage located in the upper layer enters the drainage cavity through the filter screen 1031. The filter screen 1031 further intercepts fine impurities to ensure the purification of the water quality in the drainage cavity. The purified water is discharged through the drain pipe 106. Thus, by setting the sedimentation cavity, the sludge in the sewage can settle at the bottom of the cavity, greatly reducing the possibility of subsequent blockage of the drain pipe 106. The upper layer of sewage enters the discharge cavity through the filter screen 1031, realizing the preliminary filtration and purification of the sewage, reducing the difficulty and load of subsequent sewage treatment, and reducing the blockage of the filter screen 1031 caused by impurities. As the sludge increases, the capacitive liquid level gauge 105 detects the liquid level change and sends the detected data to the controller for comparison with the set value. When the liquid level exceeds the set value, the controller starts the sludge pump 3. The sludge pump 3 works to pump out the sludge at the bottom of the sedimentation cavity through the sewage suction pipe 301 and transports it to the collection box 201 in the sludge box 2 through the sewage discharge pipe 302. After the sludge in the collection box 201 accumulates to a certain extent, the sludge in the collection box 201 is regularly cleaned. The staff lifts the top cover through the lifting device. The top cover lifts the collection box 201 through the pull rod 202, and the sludge is taken out accordingly. When the collection box 201 rises, it drives the meshing first gear 601 to rotate through the inner channel teeth 2011. The first gear 601 drives the second gear 602 to rotate, and then drives the shaft rod 6021 to rotate. The shaft rod 6021 drives the rotating shaft 603 to rotate through the sprocket 606 and the transmission chain 6061, causing the worm 604 to rotate. The worm gear 605 rotates accordingly, driving the lead screw 505 to rotate. The square sleeve 504 moves upward following the rotation of the lead screw 505, and the push plate 503 rises accordingly, pushing the water in the water storage tank 501 upward. The water is sprayed out through the square flushing pipe 502 to perform reverse flushing on the filter screen 1031. After the collection box 201 is removed from the sludge box 2, the collected sludge is dumped into the designated treatment area to complete the sludge cleaning work.

[0030] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and not limitations thereof. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions, and variations that do not contribute creatively to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A drainage device for construction engineering, comprising a drainage box (1), a sludge box (2) located on one side, the interior of the drainage box (1) being divided into a sedimentation chamber and a drainage chamber by a partition (103), and a treatment mechanism (4) located in the drainage chamber, characterized in that: The inner top of the drainage box (1) is overlapped with an inclined plate (101), the inclined plate (101) is provided with a through groove (1011) at the drainage cavity, the top of the partition (103) is fixedly connected to the lower surface of the inclined plate (101), a filter screen (1031) is installed on the partition (103) near the inclined plate (101), the interior of the sludge box (2) is provided with a collecting box (201), and one outer wall of the collecting box (201) is provided with an inner tooth (2011); The processing mechanism (4) is composed of a reverse cleaning component (5), a transmission component (6) and a support plate (7); the reverse cleaning component (5) is located below the through slot (1011); the reverse cleaning component (5) is connected to the inner track teeth (2011) via the transmission component (6); the reverse cleaning component (5) is used to collect rainwater; and the reverse cleaning component (5) cleans the filter screen (1031) by following the lifting of the collection box (201) via the transmission component (6).

2. A drainage device for construction engineering according to claim 1, characterized in that: The reverse cleaning assembly (5) comprises a water storage tank (501) with an opening at the top, the water storage tank (501) being connected to a downwardly inclined square flushing pipe (502) near the outer wall of the filter screen (1031), the water outlet of the square flushing pipe (502) being located above the filter screen (1031).

3. A drainage device for construction engineering according to claim 2, characterized in that: A push plate (503) is provided inside the water storage tank (501), a square sleeve (504) is fixed to the bottom of the push plate (503), the square sleeve (504) penetrates the bottom wall of the water storage tank (501), and a screw rod (505) is provided in the square sleeve (504), the bottom end of the screw rod (505) is rotatably connected to the bottom wall of the drainage cavity.

4. A drainage device for construction engineering according to claim 2, characterized in that: The support plate (7) is located on one side of the square sleeve (504), and the outer wall of the support plate (7) is fixedly connected to the inner wall of the drainage cavity and the bottom wall of the water storage tank (501) respectively.

5. A drainage device for construction engineering according to claim 1, characterized in that: The outer walls of the drainage box (1) and the sludge box (2) are both provided with interconnected through grooves (104), the inner teeth (2011) are located at the through grooves (104), and pull rods (202) are symmetrically fixed to the top of the collection box (201), and the top ends of the two pull rods (202) are fixed to the sealing screws located at the top of the sludge box (2).

6. A drainage device for construction engineering according to claim 5, characterized in that: The transmission assembly (6) comprises a first gear (601) rotatably mounted in the through groove (104); the tooth surface of the first gear (601) located in the drainage chamber is meshingly connected with a second gear (602); a shaft (6021) is fixedly passed through the second gear (602); a rotating shaft (603) is parallelly arranged below the shaft (6021); a worm (604) is fixedly mounted at the middle end of the rotating shaft (603); a worm wheel (605) is meshingly connected to one side of the worm (604); and the worm wheel (605) is fixedly sleeved on the bottom of a screw rod (505) arranged in the reverse cleaning assembly (5).

7. A drainage device for construction engineering according to claim 6, characterized in that: Both ends of the shaft (6021) and the rotating shaft (603) are rotatably connected to the inner wall of the drainage cavity. Sprockets (606) are fixedly sleeved on the shaft (6021) and the rotating shaft (603). The two sprockets (606) are connected in transmission via a transmission chain (6061).

8. A drainage device for construction engineering according to claim 1, characterized in that: A plurality of sewage pipes (102) are provided on one side of the drainage box (1), and the plurality of sewage pipes (102) are all connected to the sedimentation chamber. A drainage pipe (106) is provided below the drainage box (1), and one end of the drainage pipe (106) is connected to the bottom of the drainage chamber. A grid-shaped cover plate is overlapped on the top of the drainage box (1). A guide plate (1032) is fixed on one side of the partition plate (103) located in the drainage chamber, and the guide plate (1032) is located below the filter screen (1031).

9. A drainage device for construction engineering according to claim 1, characterized in that: The inclined plate (101) is provided with a capacitive liquid level gauge (105) located below the sedimentation chamber, and a sludge pump (3) is provided on a side of the capacitive liquid level gauge (105) close to the partition plate (103). The sludge pump (3) is connected to a sewage suction pipe (301) through a mounting seat and a suction port of the sludge pump (3) on the lower surface of the inclined plate (101), and the port of the sewage suction pipe (301) is spaced 5 cm from the bottom wall of the sedimentation chamber.

10. A drainage device for construction engineering according to claim 9, characterized in that: A sewage pipe (302) is provided above the inclined plate (101), one end of the sewage pipe (302) passes through the drainage box (1) and the sludge box (2) in sequence, and the other end of the sewage pipe (302) passes through the inclined plate (101) and the mounting seat and is connected to the output port of the sludge pump (3).

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