Sewage drainage device for building construction and drainage method thereof

Abstract

The application relates to the technical field of sewage drainage, and discloses a sewage drainage device for building construction and a drainage method thereof. The device comprises a suction pipe, a screening assembly and a monitoring assembly. The suction pipe is a horizontal straight pipe, one end of which is connected with one end of a hose through a first connecting ring, and the other end of the hose is connected with a suction head. The sewage suction process temporarily retains the obvious large garbage in the sewage, avoids a large amount of garbage from entering the sedimentation tank, and realizes the synchronous pretreatment of the sewage during the suction process. After the sewage suction is completed, there is no flowing sewage in the flow guide pipe. At this time, the monitoring assembly sends a signal to an external controller, the external controller controls the suction pump to stop suction, and the driving source drives the shaft body to rotate once and stop.

Description

Technical Field

[0001] This invention relates to the field of wastewater drainage technology, specifically to a wastewater drainage device and drainage method for building construction. Background Technology

[0002] With the acceleration of urbanization and the continuous expansion of construction projects, the amount of wastewater generated during construction has increased dramatically. This wastewater is complex in composition and has a high concentration of pollutants, mainly including wastewater from washing machinery and equipment (containing silt and lubricating oil), alkaline wastewater from concrete curing, muddy water carried by foundation pit dewatering, and oily wastewater from canteens in residential areas. If this type of wastewater is discharged directly without effective treatment, it will not only cause blockages in municipal pipe networks and siltation in waterways, but may also pollute groundwater due to oil seepage, leading to serious environmental problems.

[0003] Several existing technologies exist for treating construction wastewater before discharge. For example, patent publication number CN119143268B describes a method where construction wastewater is pumped from the site into a treatment tank. A spraying device, driven by a pump, moves diagonally from one side of the tank's top surface to the other, spraying flocculant into the tank. Analysis reveals several drawbacks: wastewater is directly pumped into the tank without treatment during extraction; larger impurities entering the sedimentation tank reduce sedimentation efficiency; and the high impurity content increases the load on the sedimentation tank, shortening the lifespan of its purification components. Therefore, this invention provides a construction wastewater drainage device and method that pre-treats wastewater during extraction. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a wastewater drainage device and method for construction, thereby solving the technical problem of the inability to pre-treat wastewater during extraction.

[0005] The objective of this invention can be achieved through the following technical solutions: A construction wastewater drainage device, comprising: The inlet pipe is a horizontally laid straight pipe, with one end connected to one end of a flexible tube via a first docking ring. The other end of the flexible tube is connected to a suction head, which is equipped with a suction pump. The other end of the inlet pipe is connected to a processing pipe, which is a bent pipe. The two ends of the processing pipe are respectively connected to the input end of the settling component and one end of the guide pipe. The guide pipe is an L-shaped pipe, with its vertical inlet end connected to the processing pipe and its horizontal outlet end connected to one end of a connecting pipe via a second docking ring. The other end of the connecting pipe is connected to the sedimentation tank. A screening assembly is mounted on a shaft, which is rotatably mounted inside a processing tube. The shaft is driven to rotate by a drive source. A baffle is fixedly connected to the shaft, and the edge of the baffle is in contact with the inner wall of the processing tube. An angle exists between the screening assembly and the baffle, and the connection point between the inlet tube and the processing tube is located between the screening assembly and the baffle. When the baffle stops inside the processing tube, the screening assembly stops at the connection point between the processing tube and the guide tube, blocking the flow channel between them. The monitoring component is located in the horizontal section of the guide pipe and is connected to both the drive source and the suction pump. When there is no flowing sewage in the guide pipe, the monitoring component sends a signal, the suction pump stops suction, the drive source drives the shaft to rotate once and then stops, the screening component rotates to the vertical position, and the baffle rotates into the settling component. The impurities retained on the screening component are poured into the settling component. Then the drive source drives the shaft to rotate in the opposite direction once and then stops to the initial position.

[0006] Preferably, the stationary component includes: A settling box is fixed to the outer wall of the guide pipe, and its top is provided with a round hole for connecting to the treatment pipe. The diameter of the round hole is not less than the diameter of the baffle. A sieve, fixed inside a settling chamber, with its edges flush against the inner wall of the chamber; and Multiple liquid extraction tubes are connected to the side wall of the settling box below the screen, and the multiple liquid extraction tubes are at different heights.

[0007] Preferably, the two sides of the first docking ring are threaded to the installation end of the hose and the inlet end of the injection tube, respectively, and the two ends of the second docking ring are threaded to the outlet end of the horizontal section of the guide tube and the inlet end of the connecting tube, respectively. The bottom of both the first docking ring and the second docking ring is provided with a positioning rod, and the height of the first docking ring is higher than the height of the second docking ring.

[0008] Preferably, the screening assembly includes an annular frame whose sidewall is connected to the shaft, and the outer diameter of the annular frame is equal to the diameter of the baffle. The inner diameter of each region of the processing tube is equal. A filter screen is fixed to the inner wall of the annular frame, and the filter screen blocks the central hole of the annular frame.

[0009] Preferably, the screening assembly further includes a cavity formed within the shaft body, the annular frame sealing the opening of the cavity, the annular frame being fixedly connected to one end of the rotating plate, and the other end of the rotating plate being rotatably mounted within the cavity, the rotation axis of the rotating plate being collinear with the central axis of the shaft body, an elastic element being fixed within the cavity and connected to the rotating plate, a limit switch being provided at the connection between the guide pipe and the processing pipe, and the position of the limit switch interfering with the movement path of the annular frame, the limit switch drive source and the suction pump being both connected.

[0010] Preferably, the monitoring component includes: The box body is fixed to the bottom of the horizontal section of the guide pipe, and a lifting plate is movably installed at the connection between the two. The edge of the lifting plate is connected to the bottom wall of the guide pipe through an elastic sealing ring, and the elastic sealing ring seals the connection between the box body and the guide pipe. When sewage flows in the guide pipe, the impact force of the water flow causes the lifting plate to be pressed down until it is flush with the bottom wall of the guide pipe, at which point the elastic sealing ring contracts. A distance sensor, installed inside the housing, is used to monitor the distance between the lifting plate and the bottom wall of the guide tube. The distance sensor is connected to both the drive source and the suction pump.

[0011] Preferably, a scraper rod is rotatably mounted inside the second docking ring, and the scraper rod is in contact with the inner wall of the connecting pipe. The shaft is connected to the scraper rod through a transmission assembly.

[0012] Preferably, the transmission assembly includes: The main shaft is coaxially and fixedly connected to the shaft body, and is connected to the secondary shaft via a belt. The secondary shaft is rotatably mounted on the outer wall of the second docking ring. A differential gearbox, fixed to the outer wall of the second mating ring, with its input end coaxially and fixedly connected to the countershaft, and its output end coaxially and fixedly connected to the gear; and A gear ring is rotatably connected to a second mating ring on the same axis. The top of the second mating ring has an opening, and the gear meshes with the gear ring at the opening. The inner wall of the gear ring is connected to the oil scraper rod via a connecting rod.

[0013] Preferably, the bottom of the oil scraper is an arc surface that fits against the inner wall of the connecting pipe, and an inclined surface is provided on it. An oil inlet is provided on the inclined surface, and a sliding plate is slidably installed at the oil inlet. The sliding plate is connected to the inner wall of the oil scraper through a reset component. Oil-absorbing cotton is provided on the inner wall of the oil scraper.

[0014] A drainage method for a construction wastewater drainage device, the method being applied to the construction wastewater drainage device as described above, the method comprising the following steps: Step S1: Thread the hose to the first mating ring, and simultaneously thread the first mating ring to the treatment tube, and adjust the treatment tube to a horizontal position; Step S2: Thread the guide tube to the second mating ring, and thread the second mating ring to the connecting pipe. Adjust the horizontal section of the guide tube and the connecting pipe to be horizontal, and the vertical section of the guide tube to be vertical. Step S3: Adjust the baffle to stop inside the processing tube, and stop the screening component at the connection between the processing tube and the guide tube, and fix the first docking ring and the second docking ring; Step S4: Turn on the suction pump to draw sewage through the suction head. The sewage will then enter the treatment pipe through the hose. At this time, the flow channel between the treatment pipe and the input end of the settling component is blocked by the baffle. All the sewage will pass through the screening component. The screening component will retain garbage and impurities. The screened sewage will enter the connecting pipe through the guide pipe and finally enter the sedimentation tank for sedimentation treatment. Step S5: After the sewage is pumped out, there is no flowing sewage in the guide pipe. At this time, the monitoring component sends a signal, the pump stops pumping, and the drive shaft rotates once and stops, so that the screening component turns to a vertical position and the baffle moves into the settling component. The impurities retained on the screening component are poured into the settling component. Then the drive shaft rotates in the opposite direction once and stops to the initial position.

[0015] The beneficial effects of this invention are: (1) In this invention, sewage is drawn through a suction head, and then enters the treatment pipe through a flexible hose. At this time, the flow channel between the treatment pipe and the input end of the settling component is blocked by a baffle, so all the sewage passes through the screening component. The screening component retains garbage and impurities, and the screened sewage enters the connecting pipe through the guide pipe, and finally enters the sedimentation tank for sedimentation treatment. In this way, the sewage suction process can be completed, and the obviously larger garbage in the sewage can be temporarily retained, avoiding a large amount of garbage from entering the sedimentation tank. This achieves simultaneous pretreatment of sewage during the suction process. After suction is completed, there is no flowing sewage in the guide pipe. At this time, the monitoring component sends a signal to the external controller, which then controls the suction pump to stop suction. The drive source drives the shaft to rotate once and then stops. In actual use, the motor and encoder work together to make the shaft rotate 90 degrees in one go and then stop. That is, the screening component rotates from a horizontal state to a vertical state and then stops. At this time, the baffle moves into the settling component, and the impurities retained on the screening component are poured into the settling component. Then the drive source drives the shaft to rotate in the opposite direction once and then stops to the initial state. (2) In this invention, when the weight of the garbage retained on the filter screen reaches the threshold, that is, the ring frame flips down to trigger the limit switch, the limit switch sends a signal to the external controller, the external controller controls the suction pump to stop suction, and after all the sewage in the pipe flows into the sedimentation tank, the drive source is started to drive the shaft to rotate once and then stop, and then rotates in the opposite direction to the initial state, that is, the second type of dumping trigger point is set, that is, when the screening component is fully loaded, it may affect the subsequent screening, the sewage suction is paused, the dumping is completed and the sewage suction continues, thereby avoiding the problem of the pretreatment process increasing the load of the pipeline water flow and reducing the sewage treatment efficiency; (3) In this invention, when the oil scraper removes a large amount of oil, the oil on its inclined surface accumulates and pushes the sliding plate towards the inner cavity of the oil scraper. At this time, the reset member contracts, and some of the oil can enter the inner cavity of the oil scraper and be absorbed by the oil-absorbing cotton. This enables the intermittent scraping and intermittent treatment of oil, thereby ensuring the cleanliness of the inner wall of the connecting pipe of the sewage treatment tank and reducing the problem of oil adhesion affecting the oil treatment efficiency. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the processing tube in this invention; Figure 3 This is a schematic diagram of the baffle structure in this invention; Figure 4 In this invention Figure 2 A magnified schematic diagram of the structure at point A; Figure 5 This is a schematic diagram of the flow guide tube in this invention; Figure 6 This is a schematic diagram of the screening component in this invention; Figure 7 This is a schematic diagram of the monitoring component in this invention; Figure 8 In this invention Figure 7 A magnified schematic diagram of the structure at point B; Figure 9 This is a schematic diagram of the oil scraper rod in this invention; Figure 10 This is a schematic diagram of the skateboard structure in this invention.

[0018] In the diagram: 1. Inlet pipe; 2. Suction head; 3. Flexible hose; 4. Processing pipe; 5. Guide pipe; 6. Connecting pipe; 7. Sedimentation tank; 8. Settling assembly; 801. Settling tank; 802. Screen; 803. Suction pipe; 9. First docking ring; 10. Second docking ring; 11. Sieving assembly; 1101. Annular frame; 1102. Filter screen; 1103. Rotating plate; 1104. Cavity; 1105. Elastic element; 12. Shaft; 13. Baffle; 14. Monitor Measurement components; 1401, housing; 1402, lifting plate; 1403, elastic sealing ring; 1404, distance sensor; 15, transmission components; 1501, main shaft; 1502, countershaft; 1503, belt; 1504, differential gearbox; 1505, gear; 1506, gear ring; 1507, connecting rod; 16, oil scraper; 17, limit switch; 18, oil inlet; 19, slide plate; 20, reset component; 21, oil-absorbing cotton; 22, positioning rod. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-7 As shown, the present invention is a wastewater drainage device for building construction, comprising: The inlet pipe 1 is a horizontally laid straight pipe, and one end of it is connected to one end of the hose 3 through the first docking ring 9. The other end of the hose 3 is connected to the suction head 2, and a suction pump is connected to the suction head 2. The other end of the inlet pipe 1 is connected to the processing pipe 4, and the processing pipe 4 is a bent pipe. The two ends of the processing pipe 4 are respectively connected to the input end of the settling component 8 and one end of the guide pipe 5. The guide pipe 5 is an L-shaped pipe, and the inlet end of its vertical section is connected to the processing pipe 4. The outlet end of its horizontal section is connected to one end of the connecting pipe 6 through the second docking ring 10. The other end of the connecting pipe 6 is connected to the sedimentation tank 7. A screening assembly 11 is mounted on a shaft 12, which is rotatably mounted inside a processing tube 4. The shaft 12 is driven to rotate by a drive source. A baffle 13 is fixedly connected to the shaft 12, and the edge of the baffle 13 is in contact with the inner wall of the processing tube 4. There is an angle between the screening assembly 11 and the baffle 13, and the connection between the inlet tube 1 and the processing tube 4 is located between the screening assembly 11 and the baffle 13. When the baffle 13 stops inside the processing tube 4, the screening assembly 11 stops at the connection between the processing tube 4 and the guide tube 5, blocking the flow channel between them. The monitoring component 14 is located in the horizontal section of the guide pipe 5 and is connected to both the drive source and the suction pump. When there is no flowing sewage in the guide pipe 5, the monitoring component 14 sends a signal, the suction pump stops suction, the drive shaft 12 of the drive source rotates once and stops, the screening component 11 rotates to the vertical position, and the baffle 13 rotates into the settling component 8. The impurities retained on the screening component 11 are poured into the settling component 8. Then the drive shaft 12 of the drive source rotates in the opposite direction once and stops to the initial state.

[0021] In one embodiment, the driving source can be a motor assembly, a gear assembly or a pulley assembly driven by a motor, as long as it can make the shaft 12 rotate. This embodiment does not make specific limitations here. The driving source, suction pump, monitoring component 14 and other electrical components are all connected to an external controller. The driving source, suction pump and external controller are all prior art. This application has not improved them. Therefore, it is not necessary to disclose their specific mechanical structure and circuit structure, and it does not affect the integrity of this application.

[0022] It should be noted that the connecting pipe 6 is the input pipe of the sedimentation tank 7. In actual use, it can also be the input pipe of other sewage purification equipment, which will not be elaborated here.

[0023] Baffle 13 is arranged at an angle, such as Figure 3 As shown, in the initial state, the screening component 11 is horizontal, and the angle between the baffle 13 and the screening component 11 is obtuse, and the baffle 13 can block the flow channel between itself and the input end of the settling component 8; when the baffle 13 rotates into the settling component 8 and stops, as... Figure 5 As shown, at this time, the screening component 11 is rotated to a vertical position, and there is a gap between the baffle 13 and the input end of the settling component 8, so that the waste poured out by the screening component 11 can pass through the input end of the settling component 8.

[0024] Compared to pumping sewage and then discharging it into a separately installed screening box, the device provided in this application focuses on automatically pre-treating the sewage during pumping, which can speed up the sewage treatment process, reduce the damage to the pipes caused by impurities in the sewage, and take into account that the pumping pipes have many bends. This method can prevent impurities and garbage from accumulating in the pumping pipes.

[0025] In practical application, the hose 3 is connected to the first docking ring 9, and the first docking ring 9 is connected to the treatment pipe 4. The treatment pipe 4 is adjusted to be horizontal. The guide pipe 5 is connected to the second docking ring 10, and the second docking ring 10 is connected to the connecting pipe 6. The horizontal section of the guide pipe 5 and the connecting pipe 6 are both adjusted to be horizontal, while the vertical section of the guide pipe 5 is vertical. The baffle 13 is then positioned inside the treatment pipe 4, and the screening component 11 is positioned at the connection between the treatment pipe 4 and the guide pipe 5. The first docking ring 9 and the second docking ring 10 are then fixed. At this point, the device is assembled and in its initial state. The suction pump is turned on to draw sewage through the suction head 2. The sewage then enters the treatment pipe 4 through the hose 3. At this point, the flow channel between the treatment pipe 4 and the input end of the settling component 8 is blocked by the baffle 13. All the sewage passes through the screening component 11, and the waste and debris are retained at the screening component 11. After screening, the wastewater enters the connecting pipe 6 through the guide pipe 5 and finally enters the sedimentation tank 7 for sedimentation treatment. This process can temporarily retain larger waste in the wastewater, preventing a large amount of waste from entering the sedimentation tank 7. This achieves simultaneous pretreatment of wastewater during the suction process. When the wastewater suction is completed, there is no flowing wastewater in the guide pipe 5. At this time, the monitoring component 14 sends a signal to the external controller, which then controls the suction pump to stop suction. The drive source drives the shaft 12 to rotate once and stop. In actual use, the motor and encoder work together to make the shaft 12 rotate 90 degrees in one go and then stop. That is, the screening component 11 rotates from a horizontal state to a vertical state and then stops. At this time, the baffle 13 rotates into the settling component 8, and the impurities retained on the screening component 11 are poured into the settling component 8. Then the drive source drives the shaft 12 to rotate in the opposite direction once and stop to the initial state.

[0026] like Figures 1-5 As shown, in a preferred embodiment of the present invention, the stationary component 8 includes: The settling box 801 is fixed on the outer wall of the guide pipe 5, and its top is provided with a round hole that connects to the treatment pipe 4. The diameter of the round hole is not less than the diameter of the baffle 13. Screen 802 is fixed inside settling box 801, and its edges are fitted against the inner wall of settling box 801; and Multiple liquid extraction tubes 803 are connected to the side wall of the settling box 801 below the screen 802, and the multiple liquid extraction tubes 803 are at different heights.

[0027] In one embodiment, the circular hole is the input end of the stationary component 8.

[0028] In practical application, when the baffle 13 moves into the settling component 8 and stops, the impurities retained on the screening component 11 are poured out through the round hole into the settling box 801 and are retained on the screen 802 for drainage. The sewage at the bottom of the settling box 801 can be extracted through the suction pipe 803 for testing or further purification. The suction pipes 803 at different heights facilitate the extraction of the stratified sewage after settling.

[0029] like Figures 1-8 As shown, in a preferred embodiment of the present invention, the two sides of the first docking ring 9 are threadedly connected to the mounting end of the hose 3 and the inlet end of the inlet tube 1, respectively. The two ends of the second docking ring 10 are threadedly connected to the outlet end of the horizontal section of the guide tube 5 and the inlet end of the connecting tube 6, respectively. The bottom of both the first docking ring 9 and the second docking ring 10 are provided with positioning rods 22, and the height of the first docking ring 9 is higher than the height of the second docking ring 10.

[0030] In one embodiment, the positioning rod 22 includes a telescopic rod and a positioning tooth. The telescopic rod is a structure composed of nested multi-stage tubular components. In practical applications, a gear and rack structure or an electric telescopic rod structure can also be used. This embodiment does not impose specific limitations here. The positioning tooth can be inserted into the ground to fix the device.

[0031] like Figures 2-6 As shown, in a preferred embodiment of the present invention, the screening assembly 11 includes an annular frame 1101 whose sidewall is connected to the shaft 12, and the outer diameter of the annular frame 1101 is equal to the diameter of the baffle 13. The inner diameter of each region of the processing tube 4 is equal. A filter screen 1102 is fixed on the inner wall of the annular frame 1101, and the filter screen 1102 blocks the central hole of the annular frame 1101.

[0032] In practical application, the outer walls of the annular frame 1101 and the baffle 13 are both in contact with the inner wall of the treatment pipe 4 to guide the sewage. In the initial state, the annular frame 1101 is horizontal. At this time, the flow channel between the treatment pipe 4 and the input end of the settling component 8 is blocked by the baffle 13. Then all the sewage flows down after passing through the filter screen 1102 and enters the connecting pipe 6 through the guide pipe 5.

[0033] like Figures 2-6As shown, in a preferred embodiment of the present invention, the screening assembly 11 further includes a cavity 1104 opened in the shaft 12, an annular frame 1101 blocking the opening of the cavity 1104, the annular frame 1101 being fixedly connected to one end of the rotating plate 1103, and the other end of the rotating plate 1103 being rotatably installed in the cavity 1104, the rotation axis of the rotating plate 1103 being collinear with the central axis of the shaft 12, an elastic element 1105 being fixed in the cavity 1104, and the elastic element 1105 being connected to the rotating plate 1103, a limit switch 17 being provided at the connection between the guide pipe 5 and the processing pipe 4, and the position of the limit switch 17 interfering with the movement path of the annular frame 1101, and the drive source of the limit switch 17 and the suction pump being connected.

[0034] In one embodiment, the elastic element 1105 can be a spring or other elastic components, such as silicone pillars or spring sheets. No specific limitation is made in this embodiment. The limit switch 17 is connected to an external controller. The limit switch 17 is prior art and has not been improved in this application. Therefore, it is not necessary to disclose its specific mechanical structure and circuit structure, and it does not affect the integrity of this application.

[0035] In practical application, when the elastic element 1105 is in a free state, both the rotating plate 1103 and the annular frame 1101 are in a horizontal state. At this time, there is a gap between the annular frame 1101 and the limit switch 17. When the weight of the garbage retained on the filter screen 1102 reaches the threshold, that is, the annular frame 1101 flips downward to trigger the limit switch 17. Then the limit switch 17 sends a signal to the external controller. The external controller controls the suction pump to stop suction. After all the sewage in the pipe flows into the sedimentation tank 7, the drive source is started to drive the shaft 12 to rotate once and then stop. Then it rotates in the opposite direction to the initial state, that is, the second type of dumping trigger point is set. That is, when the screening component 11 is fully loaded, it may affect the subsequent screening. The sewage suction is paused, and the sewage suction is resumed after the dumping is completed. This avoids the problem of the pretreatment process increasing the load of the pipeline water and reducing the sewage treatment efficiency.

[0036] like Figures 1-8 As shown, in a preferred embodiment of the present invention, the monitoring component 14 includes: The box body 1401 is fixed to the bottom of the horizontal section of the guide pipe 5, and a lifting plate 1402 is movably installed at the connection between the two. The edge of the lifting plate 1402 is connected to the bottom wall of the guide pipe 5 through an elastic sealing ring 1403, and the elastic sealing ring 1403 seals the connection between the box body 1401 and the guide pipe 5. When there is sewage flowing in the guide pipe 5, the impact force of the water flow causes the lifting plate 1402 to be pressed down to be flush with the bottom wall of the guide pipe 5. At this time, the elastic sealing ring 1403 contracts. Distance sensor 1404 is installed inside housing 1401 and is used to monitor the distance between lifting plate 1402 and bottom wall of guide pipe 5. Distance sensor 1404 is connected to drive source and suction pump.

[0037] In one embodiment, a guide rod is fixed to the bottom of the lifting plate 1402, and the guide rod slides in cooperation with a guide groove formed on the inner wall of the box 1401. The cooperation between the guide rod and the guide groove enables the lifting plate 1402 to perform linear lifting motion, and the lifting displacement is always within a threshold value. The elastic sealing ring 1403 can be a rubber ring or other elastic structures that can achieve sealing, which will not be described in detail here. The distance sensor 1404 is connected to an external controller, and the distance sensor 1404 is prior art. This application has not improved it. Therefore, it is not necessary to disclose its specific mechanical structure and circuit structure, and it does not affect the integrity of this application.

[0038] In practical applications, when the elastic sealing ring 1403 is in a free state, as in this embodiment... Figure 7 As shown, at this time, the lifting plate 1402 is located above the bottom wall of the guide pipe 5, and there is a gap between the two. When the guide pipe 5 guides sewage, the sewage flowing from the vertical section into the horizontal section has an impact force, which will first impact the side of the elastic sealing ring 1403 and collapse it. Then, this side of the lifting plate 1402 will descend. Under the action of the sewage impact force, the entire lifting plate 1402 will be pressed down to be flush with the bottom wall of the guide pipe 5. The distance sensor 1404 monitors the distance between the lifting plate 1402 and the bottom wall of the guide pipe 5 in real time. When the distance between the two returns to its maximum value, it is determined that the sewage suction is completed. Then, the external controller controls the suction pump to stop suction, and the drive source drive shaft 12 rotates once and stops. Figure 2 Taking the direction shown as an example, the rotation at this time is the rotation of shaft 12 counterclockwise by 90 degrees.

[0039] like Figures 1-10 As shown, in a preferred embodiment of the present invention, an oil scraper 16 is rotatably mounted inside the second docking ring 10, and the oil scraper 16 is in contact with the inner wall of the connecting pipe 6. The shaft 12 is connected to the oil scraper 16 through the transmission assembly 15.

[0040] In one embodiment, the transmission assembly 15 includes: The main shaft 1501 is coaxially and fixedly connected to the shaft body 12, and is connected to the auxiliary shaft 1502 via the belt 1503. The auxiliary shaft 1502 is rotatably mounted on the outer wall of the second docking ring 10. The differential 1504 is fixed to the outer wall of the second mating ring 10, and its input end is coaxially and fixedly connected to the countershaft 1502. The output end of the differential 1504 is coaxially and fixedly connected to the gear 1505. The gear ring 1506 is rotatably connected to the second docking ring 10 on the same axis. The top of the second docking ring 10 is provided with an opening, and the gear 1505 meshes with the gear ring 1506 at the opening. The inner wall of the gear ring 1506 is connected to the oil scraper 16 through the connecting rod 1507.

[0041] It should be noted that the differential box 1504 is equipped with a differential assembly, which can coordinate the rotational speed of the countershaft 1502 and the gear 1505, so that when the shaft 12 rotates once, that is, 90 degrees, the gear 1505 can drive the gear ring 1506 to rotate once. The differential assembly is prior art, and this application has not improved it. Therefore, it is not necessary to disclose its specific mechanical structure and circuit structure, and it does not affect the integrity of this application.

[0042] In practical application, when the shaft 12 rotates, the secondary shaft 1502 rotates synchronously through the belt 1503. By adjusting the differential box 1504, the gear 1505 can drive the gear ring 1506 to rotate one revolution once when the shaft 12 rotates once. Then the oil scraper 16 can slide one revolution on the inner wall of the connecting pipe 6 to scrape the oil in the sewage away from the inner wall of the connecting pipe 6.

[0043] It should be noted that when the shaft 12 is reset and rotates in the opposite direction, the oil scraper 16 rotates in the opposite direction, which can scrape the oil stains off the inner wall of the connecting pipe 6 again through its other surface. The oil stains will be concentrated and pushed to the initial position of the oil scraper 16. When sewage flows again in the future, the concentrated oil stains are more likely to be flushed into the sedimentation tank 7, thereby reducing the problem of oil stains in sewage adhering to the inner wall of the connecting pipe 6.

[0044] like Figures 9-10 As shown, in a preferred embodiment of the present invention, the bottom of the oil scraper 16 is an arc surface that fits against the inner wall of the connecting pipe 6, and an inclined surface is provided thereon. An oil inlet 18 is provided on the inclined surface, and a sliding plate 19 is slidably installed at the oil inlet 18. The sliding plate 19 is driven to connect with the inner wall of the oil scraper 16 through the reset member 20. An oil-absorbing cotton 21 is provided on the inner wall of the oil scraper 16.

[0045] In one embodiment, the reset member 20 can be a silicone pillar, or other elastic components such as springs or sheet metal can be used instead. No specific limitation is made in this embodiment. The oil-absorbing cotton 21 is prior art, and this application has not improved it. Therefore, it is not necessary to disclose its specific mechanical structure and circuit structure, and it does not affect the integrity of this application.

[0046] In practical applications, this embodiment takes into account that the oil-absorbing cotton 21 achieves the characteristic of "absorbing oil but not water" through its ultra-fine fiber structure, which has high adsorption efficiency for floating oil or non-water-soluble oil stains on the water surface. However, if it is soaked in sewage for a long time, its surface may be covered by impurities in the water, resulting in a decrease in oil absorption capacity. Therefore, the oil-absorbing cotton 21 is designed to be pasted on the inner wall of the oil scraper 16. In the initial state, the reset member 20 is in a free state, and the sliding plate 19 blocks the oil inlet 18. When the oil scraper 16 scrapes off a large amount of oil stains, the oil stains on its inclined surface accumulate and push the sliding plate 19 to move into the inner cavity of the oil scraper 16. At this time, the reset member 20 contracts, and some oil stains can enter the inner cavity of the oil scraper 16 and be absorbed by the oil-absorbing cotton 21. In this way, the oil stains can be scraped off intermittently and treated intermittently, thereby ensuring the cleanliness of the inner wall of the connecting pipe of the sewage treatment tank and reducing the problem of oil stains adhering and affecting the oil stain treatment efficiency.

[0047] Please see Figures 1-10 As shown, the present invention provides a drainage method for a construction wastewater drainage device. The method is applied to the construction wastewater drainage device as described in the above embodiment, and includes the following steps: Step S1: Thread the hose 3 to the first docking ring 9, and at the same time thread the first docking ring 9 to the treatment tube 4, and adjust the treatment tube 4 to a horizontal position; Step S2: Thread the guide tube 5 to the second docking ring 10, and thread the second docking ring 10 to the connecting tube 6. Adjust the horizontal section of the guide tube 5 and the connecting tube 6 to be horizontal, and the vertical section of the guide tube 5 to be vertical. Step S3: Adjust the baffle 13 to stop inside the processing tube 4, and the screening component 11 to stop at the connection between the processing tube 4 and the guide tube 5, and fix the first docking ring 9 and the second docking ring 10. Step S4: Turn on the suction pump to suck up the sewage through the suction head 2. The sewage then enters the treatment pipe 4 through the hose 3. At this time, the flow channel between the treatment pipe 4 and the input end of the settling component 8 is blocked by the baffle 13. All the sewage passes through the screening component 11. The screening component 11 retains garbage and impurities. The screened sewage enters the connecting pipe 6 through the guide pipe 5 and finally enters the sedimentation tank 7 for sedimentation treatment. Step S5: After the sewage is pumped out, there is no flowing sewage in the guide pipe 5. At this time, the monitoring component 14 sends a signal, the pump stops pumping, and the drive shaft 12 of the drive source rotates once and stops, so that the screening component 11 turns to the vertical position, and the baffle 13 turns into the settling component 8. The impurities retained on the screening component 11 are poured into the settling component 8. Then the drive shaft 12 of the drive source rotates in the opposite direction once and stops to the initial state.

[0048] Working principle of the invention: The above embodiments of the invention provide a sewage drainage device and method for construction. Sewage is drawn by the suction head 2, and then enters the treatment pipe 4 through the hose 3. At this time, the flow channel between the treatment pipe 4 and the input end of the settling component 8 is blocked by the baffle 13, so all the sewage passes through the screening component 11. The screening component 11 retains garbage and impurities. The screened sewage enters the connecting pipe 6 through the guide pipe 5, and finally enters the sedimentation tank 7 for sedimentation treatment. In this way, the sewage suction process can be completed, and obviously larger garbage in the sewage can be temporarily retained, avoiding a large amount of garbage entering the sedimentation tank 7, thus realizing the suction process. Simultaneously, the sewage is pretreated. After the sewage is pumped out, there is no flowing sewage in the guide pipe 5. At this time, the monitoring component 14 sends a signal to the external controller, and the external controller controls the suction pump to stop pumping. The drive source drives the shaft 12 to rotate once and stop. In actual use, the motor and encoder work together to make the shaft 12 rotate 90 degrees once and then stop. That is, the screening component 11 rotates from the horizontal state to the vertical state and then stops. At this time, the baffle 13 moves into the settling component 8, and the impurities retained on the screening component 11 are poured into the settling component 8. Then the drive source drives the shaft 12 to rotate in the opposite direction once and stop to the initial state.

[0049] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A wastewater drainage device for building construction, characterized in that, include: The inlet pipe (1) is a straight pipe laid horizontally, and one end of it is connected to one end of the hose (3) through the first docking ring (9). The other end of the hose (3) is connected to the suction head (2). The suction head (2) is connected to a suction pump. The other end of the inlet pipe (1) is connected to the processing pipe (4). The processing pipe (4) is a bent pipe. The two ends of the processing pipe (4) are respectively connected to the input end of the settling component (8) and one end of the guide pipe (5). The guide pipe (5) is an L-shaped pipe. The inlet end of its vertical section is connected to the processing pipe (4). The outlet end of its horizontal section is connected to one end of the connecting pipe (6) through the second docking ring (10). The other end of the connecting pipe (6) is connected to the sedimentation tank (7). A screening assembly (11) is mounted on a shaft (12), which is rotatably mounted inside a processing tube (4). The shaft (12) is driven to rotate by a drive source. A baffle (13) is fixedly connected to the shaft (12), and the edge of the baffle (13) is in contact with the inner wall of the processing tube (4). The screening assembly (11) and the baffle (13) have an angle between them, and the connection between the inlet tube (1) and the processing tube (4) is located between the screening assembly (11) and the baffle (13). When the baffle (13) stops inside the processing tube (4), the screening assembly (11) stops at the connection between the processing tube (4) and the guide tube (5), and blocks the flow channel between them. The monitoring component (14) is located in the horizontal section of the guide pipe (5) and is connected to both the drive source and the suction pump. When there is no flowing sewage in the guide pipe (5), the monitoring component (14) sends a signal, the suction pump stops suction, the drive shaft (12) of the drive source rotates once and stops, the screening component (11) rotates to the vertical position, and the baffle (13) rotates into the settling component (8). The impurities retained on the screening component (11) are poured into the settling component (8), and then the drive shaft (12) of the drive source rotates in the opposite direction once and stops to the initial state.

2. The wastewater drainage device for building construction according to claim 1, characterized in that, The stationary component (8) includes: The settling box (801) is fixed on the outer wall of the guide pipe (5) and has a round hole at its top that connects to the treatment pipe (4). The diameter of the round hole is not less than the diameter of the baffle (13). A sieve (802) is fixed inside a settling box (801), and its edges are fitted against the inner wall of the settling box (801); and The liquid extraction tube (803) is connected to a plurality of liquid extraction tubes (803) on the side wall of the settling box (801) below the screen (802), and the plurality of liquid extraction tubes (803) are at different heights.

3. A wastewater drainage device for building construction according to claim 1, characterized in that, The first docking ring (9) is threaded to the installation end of the hose (3) and the inlet end of the inlet tube (1) on both sides respectively. The second docking ring (10) is threaded to the outlet end of the horizontal section of the guide tube (5) and the inlet end of the connecting tube (6) on both ends respectively. The bottom of the first docking ring (9) and the second docking ring (10) are both provided with positioning rods (22), and the height of the first docking ring (9) is higher than the height of the second docking ring (10).

4. A construction wastewater drainage device according to claim 3, characterized in that, The screening assembly (11) includes an annular frame (1101) whose sidewall is connected to the shaft (12), and the outer diameter of the annular frame (1101) is equal to the diameter of the baffle (13). The inner diameter of each region of the processing tube (4) is equal. A filter screen (1102) is fixed on the inner wall of the annular frame (1101), and the filter screen (1102) blocks the central hole of the annular frame (1101).

5. A construction wastewater drainage device according to claim 4, characterized in that, The screening assembly (11) also includes a cavity (1104) opened in the shaft (12). The annular frame (1101) blocks the opening of the cavity (1104). The annular frame (1101) is fixedly connected to one end of the rotating plate (1103), and the other end of the rotating plate (1103) is rotatably installed in the cavity (1104). The rotation axis of the rotating plate (1103) is collinear with the central axis of the shaft (12). An elastic element (1105) is fixed in the cavity (1104), and the elastic element (1105) is connected to the rotating plate (1103). A limit switch (17) is provided at the connection between the guide pipe (5) and the processing pipe (4), and the position of the limit switch (17) interferes with the movement path of the annular frame (1101). The limit switch (17) is connected to both the drive source and the suction pump.

6. A construction wastewater drainage device according to claim 4, characterized in that, The monitoring component (14) includes: A box body (1401) is fixed to the bottom of the horizontal section of the guide pipe (5), and a lifting plate (1402) is movably installed at the connection between the two. The edge of the lifting plate (1402) is connected to the bottom wall of the guide pipe (5) through an elastic sealing ring (1403), and the elastic sealing ring (1403) seals the connection between the box body (1401) and the guide pipe (5). When there is sewage flowing in the guide pipe (5), the impact force of the water flow causes the lifting plate (1402) to be pressed down to be flush with the bottom wall of the guide pipe (5), at which time the elastic sealing ring (1403) contracts. A distance sensor (1404) is installed inside the housing (1401) to monitor the distance between the lifting plate (1402) and the bottom wall of the guide pipe (5). The distance sensor (1404) is connected to both the drive source and the suction pump.

7. A construction wastewater drainage device according to claim 4, characterized in that, The second docking ring (10) is rotatably mounted with an oil scraper (16), and the oil scraper (16) is in contact with the inner wall of the connecting pipe (6). The shaft (12) is connected to the oil scraper (16) through the transmission assembly (15).

8. A wastewater drainage device for building construction according to claim 7, characterized in that, The transmission assembly (15) includes: The main shaft (1501) is coaxially fixedly connected to the shaft body (12) and is connected to the secondary shaft (1502) via a belt (1503). The secondary shaft (1502) is rotatably mounted on the outer wall of the second docking ring (10). A differential (1504) is fixed to the outer wall of the second mating ring (10), and its input end is coaxially fixedly connected to the countershaft (1502). The output end of the differential (1504) is coaxially fixedly connected to the gear (1505). A gear ring (1506) is rotatably connected to a second docking ring (10) on the same axis. The top of the second docking ring (10) is provided with an opening, and the gear (1505) meshes with the gear ring (1506) at the opening. The inner wall of the gear ring (1506) is connected to the oil scraper rod (16) through a connecting rod (1507).

9. A wastewater drainage device for building construction according to claim 8, characterized in that, The bottom of the oil scraper (16) is an arc surface that fits against the inner wall of the connecting pipe (6), and there is a slope on it. An oil inlet (18) is opened on the slope, and a sliding plate (19) is slidably installed at the oil inlet (18). The sliding plate (19) is driven to connect with the inner wall of the oil scraper (16) through the reset member (20). Oil-absorbing cotton (21) is provided on the inner wall of the oil scraper (16).

10. A drainage method for a wastewater drainage device used in building construction, characterized in that, The method is applied to a construction wastewater drainage device as described in any one of claims 1-9 above, and the method includes the following steps: Step S1: Thread the hose (3) to the first docking ring (9), and at the same time thread the first docking ring (9) to the treatment tube (4), and adjust the treatment tube (4) to a horizontal position; Step S2: Thread the guide tube (5) to the second docking ring (10), and thread the second docking ring (10) to the connecting tube (6). Adjust the horizontal section of the guide tube (5) and the connecting tube (6) to be horizontal, and the vertical section of the guide tube (5) to be vertical. Step S3: Adjust the baffle (13) to stop inside the processing tube (4), and the screening component (11) to stop at the connection between the processing tube (4) and the guide tube (5), and fix the first docking ring (9) and the second docking ring (10); Step S4: Turn on the suction pump to suck up the sewage through the suction head (2). The sewage will then enter the treatment pipe (4) through the hose (3). At this time, the flow channel between the treatment pipe (4) and the input end of the settling component (8) is blocked by the baffle (13). All the sewage will pass through the screening component (11). The screening component (11) will retain garbage and impurities. The screened sewage will enter the connecting pipe (6) through the guide pipe (5) and finally enter the sedimentation tank (7) for sedimentation treatment. Step S5: After the sewage is pumped out, there is no sewage flowing in the guide pipe (5). At this time, the monitoring component (14) sends a signal, the pump stops pumping, and the drive shaft (12) of the drive source rotates once and stops, so that the screening component (11) turns to the vertical state, and the baffle (13) turns into the settling component (8). The impurities retained on the screening component (11) are poured into the settling component (8). Then the drive shaft (12) of the drive source rotates in the opposite direction once and stops to the initial state.

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