Rainfall drainage sediment filtering device for building construction

Abstract

The invention relates to the technical field of drainage structures, in particular to a rainfall drainage silt filtering device for building construction, which comprises a filter barrel, a filter disc is mounted in the filter barrel, a discharge port is formed in the filter disc, an opening and closing unit is arranged at the discharge port, and the discharge port is communicated with a sand storage barrel; a motor is mounted on the filter barrel, and a sand scraping unit is in sliding fit with an output shaft of the motor; a buoyancy unit and a first guide wheel are arranged in the filter barrel, the buoyancy unit is connected to the filter barrel through a second spring, the buoyancy unit is connected with a pressing ring through a first pull rope, and the pressing ring is connected to the filter barrel through an elastic telescopic rod; when filter holes in the filter disc are blocked by silt, the liquid level in the filter barrel is gradually raised, the buoyancy unit gradually floats upwards, the elastic telescopic rod recovers to a natural state, the sand scraping unit is pressed downwards by the pressing ring, and the sand scraping unit is pressed downwards on the upper surface of the filter disc, so that the silt on the filter disc is automatically cleaned. According to the device, accumulated water can be continuously filtered for a long time, so that the filtering efficiency of the accumulated water is improved.

Description

Technical Field

[0001] The present application relates to the technical field of drainage structures, and particularly relates to a rainfall drainage and sediment filtration device for building construction. Background Art

[0002] In the building construction area, a large amount of sediment often falls on the road surface. Once it rains, the rainwater will wash the sediment on the road surface to the low-lying areas of the road surface, resulting in more sediment in the accumulated water in the low-lying areas of the road surface. If this part of the accumulated water is directly discharged into the sewer through a sludge pump, the sediment will accumulate in the sewer, thus easily causing the sewer to be blocked.

[0003] Through retrieval, Chinese Patent Publication No. CN119392797A discloses a building construction rainfall drainage structure, including a box body and a filtration chamber provided in the box body. An outlet pipe communicating with the filtration chamber is provided at the lower end of the box body. A notch communicating with the filtration chamber is provided on one side wall of the box body. An installation plate is provided at the notch. A filter plate with one end passing through the notch and extending into the filtration chamber is provided on the installation plate. A plurality of filtration holes are formed on the filter plate. A material pushing component is provided on the filter plate. A box body is provided on one side wall of the box body. A cavity is provided in the box body. A disassembly and assembly component is provided in the cavity. Fixing components are provided on the opposite side walls of the box body. A pumping component for pumping water is provided at the upper end of the box body. Through the above structure, the sediment accumulated on the filtration holes can be pushed by the material pushing component, so as to avoid the blockage of the filtration holes by the sediment and affect the actual use of the filter plate.

[0004] The above related technology has the following defects: By pushing the sediment on the filter plate with a push plate, the sediment can only be temporarily prevented from blocking the filtration holes. As the accumulated water continues to enter, the sediment on the filter plate will still block the filtration holes again; as the sediment on the filter plate increases, the dredging effect of the push plate on the filtration holes will no longer be obvious, affecting the filtration efficiency of the filter plate for the accumulated water; if the filtration of the accumulated water is paused and the filter plate is removed for cleaning, the discharge of the accumulated water will be temporarily interrupted, further affecting the filtration efficiency of the accumulated water. Therefore, improvement is needed. Summary of the Invention

[0005] In order to be able to continuously filter the accumulated water for a long time and thus improve the filtration efficiency of the accumulated water, the present application provides a rainfall drainage and sediment filtration device for building construction.

[0006] A rainfall drainage and sediment filtration device for building construction provided by the present application adopts the following technical solution: A rainfall drainage and sediment filtration device for building construction includes a filter barrel having an inlet pipe and an outlet pipe. A horizontally arranged filter disc is installed in the filter barrel. The inlet pipe is located above the filter disc, and the outlet pipe is located below the filter disc. A discharge port is provided on the filter disc. An opening and closing unit is provided at the discharge port, and a sand storage barrel is communicated with the discharge port;

[0007] A motor is installed on the filter barrel, and the output shaft of the motor is coaxially arranged with the filter disc and rotatably penetrates the center of the filter disc. A sand scraping unit is slidably matched with the output shaft of the motor in the vertical direction, and the sand scraping unit is connected to the output shaft of the motor through a first spring;

[0008] A buoyancy unit and a first guide wheel are provided in the filter barrel, the buoyancy unit is connected to the filter barrel through a second spring, and the buoyancy unit is connected to a pressure ring through a first pull rope, the pressure ring is connected to the filter barrel through an elastic telescopic rod, and the middle part of the first pull rope passes around the first guide wheel;

[0009] When the second spring is in a natural state, the elastic telescopic rod will be in a deformed state, the first spring will be in a natural state, the pressure ring will be located above the sand scraping unit and will not be pressed against the sand scraping unit, and the sand scraping unit and the filter disc will be set with a gap;

[0010] When the buoyancy unit floats up when encountering water, the elastic telescopic rod will return to its natural state and make the pressure ring press down the sand scraping unit, and the sand scraping unit will be pressed downward tightly against the upper surface of the filter disc.

[0011] Optionally, the opening and closing unit is slidably inserted in the discharge port and slidably penetrates the sand storage bucket, the opening and closing unit is connected to the sand storage bucket via a third spring, and the opening and closing unit is connected to the buoyancy unit via a second pull rope, and a second guide wheel for the second pull rope to pass around is provided on both the filter barrel and the sand storage bucket;

[0012] When the second spring is in the natural state, the third spring will be in the natural state, and the opening and closing unit will be closed at the discharge port;

[0013] When the buoyancy unit floats up upon encountering water, the buoyancy unit will pull the opening and closing unit through the second pull rope to move away from the discharge port.

[0014] Optionally, a through hole is provided at the center of the filter disc, a magnetic ring is provided in the through hole, the magnetic ring is used to adsorb the sand scraping unit that descends and abuts against the filter disc, and the output shaft of the motor rotates and penetrates the inner side of the magnetic ring;

[0015] A lifting unit for lifting the sand scraping unit away from the magnetic ring is arranged below the filter disc.

[0016] Optionally, the upper unit comprises a water storage box arranged in the filter barrel, the bottom of the water storage box is provided with a plurality of water permeable holes, a floating ring is placed in the water storage box, a top rod is arranged on the floating ring, and a through hole for the top rod to slide through in a vertical direction is arranged on the magnetic ring;

[0017] When the drainage speed of the water permeable hole is lower than the water receiving speed of the water storage box, the floating ring will float up and push the sand scraping unit up and away from the magnetic ring through the push rod.

[0018] Optionally, the bottom of the sand storage bucket is connected to the bottom of the filter bucket through a water guide channel, and a water-permeable plate is installed at the connection point between the water guide channel and the sand storage bucket.

[0019] Optionally, the upper surface of the filter disc is divided into a flattening area and a discharging area which are arranged inside and outside. The height of the flattening area gradually decreases from the center of the filter disc to the edge of the filter disc, and the height of the discharging area gradually increases from the center of the filter disc to the edge of the filter disc. The discharge port is located in the discharging area.

[0020] Optionally, the sand scraping unit includes a collar and a scraper arranged in a "V" shape. The collar is slidably fitted on the output shaft of the motor in the vertical direction. The scraper is arranged on the collar, and the scraper can descend and abut against the flattening area and the discharging area. Both ends of the scraper are connected by a reinforcing plate, and the scraper and the reinforcing plate together form a triangular structure.

[0021] Optionally, the buoyancy unit includes a floating plate and a lifting plate respectively arranged on the inner and outer sides of the filter barrel. The floating plate and the lifting plate are connected by a limiting rod, and the limiting rod is slidably penetrated through the filter barrel in the vertical direction; the floating plate is connected to the pressing ring through the first pulling rope, and the floating plate is connected to the filter barrel through the second spring. The lifting plate is connected to the opening and closing unit through the second pulling rope.

[0022] Optionally, the opening and closing unit includes a first opening and closing door and a mounting plate respectively arranged on the inner and outer sides of the sand storage barrel. The first opening and closing plate is inserted into the discharge port. The first opening and closing door is connected to the mounting plate through at least two sliding rods. The sliding rods are slidably penetrated through the sand storage barrel along the sliding direction of the first opening and closing door in the discharge port. The mounting plate is connected to the sand storage barrel through the third spring, and the mounting plate is connected to the lifting plate through the second pulling rope.

[0023] Optionally, a second opening and closing door that can be opened and closed is provided at the bottom of the sand storage barrel.

[0024] In summary, the present application includes the following beneficial technical effects:

[0025] 1. When the filter disc is blocked by sediment, the liquid level in the filter barrel will rise, the floating plate will float upward, the elastic telescopic rod will cause the pressing ring to press down the collar, and the collar will drive the scraper to descend and contact the upper surface of the filter disc, causing the scraper to rotate and scrape off all the sediment on the filter disc; the floating plate also drives the lifting plate to rise through the limiting rod, and the lifting plate will pull the first opening and closing door to move away from the discharge port through the second pull rope. The sediment pushed by the scraper will flow into the sand storage barrel through the discharge port along with the water body; after the sediment on the filter disc is basically cleared, the liquid level in the water storage box has risen to the specified height, and the floating plate will push up the collar through the top rod, causing the collar to rise and disengage from the magnetic ring. The first spring, the second spring, the third spring, and the elastic telescopic rod will return to their natural states. The scraper will rise and reset and disengage from the filter disc, the floating plate and the lifting plate will descend and reset, and the first opening and closing door will move back to its position and re-close the discharge port, enabling the filter disc to continue filtering the sediment in the accumulated water. The water body in the sand storage barrel can slowly pass through the water permeable plate and flow out into the filter barrel through the water guiding channel, and the water body in the filter barrel will be discharged into the sewer through the water outlet pipe. This application can continuously filter the accumulated water for a long time, thereby improving the filtering efficiency of the accumulated water;

[0026] 2. When the scraper descends and contacts the upper surface of the filter disc, the magnetic ring will adsorb the collar. Therefore, even if the liquid level in the filter barrel gradually drops below the floating plate, the collar will remain at the current height, enabling the scraper to continuously contact the upper surface of the filter disc so that the scraper can thoroughly clean the sediment on the filter disc; at the same time, the collar will tighten the floating plate through the first pull rope, causing the floating plate to also remain at the current height. The floating plate will cause the lifting plate to remain at the current height through the limiting rod, and the lifting plate will cause the first opening and closing door to remain stationary through the second pull rope. At this time, the discharge port will be continuously exposed, so that the sediment on the filter disc can be discharged into the sand storage barrel through the discharge port;

[0027] 3. The height of the leveling area gradually decreases from the center of the filter disc to the edge of the filter disc. The sediment pushed by the scraper will slide towards the lower part of the leveling area under the action of its own centrifugal force and gravity, so that the scraper can level the sediment on the upper surface of the filter disc; the height of the discharge area gradually increases from the center of the filter disc to the edge of the filter disc, so that too much sediment will not accumulate at the discharge port, preventing the exposed discharge port from being blocked by excessive sediment accumulation and ensuring the smoothness of the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0029] Figure 2 is the overall sectional structural schematic diagram of the embodiment of the present application;

[0030] Figure 3 is the sectional structural schematic diagram of the filter barrel of the embodiment of the present application;

[0031] Figure 4 is Figure 3 A partial enlarged schematic view of the position A in it;

[0032] Figure 5 is Figure 3 A partial enlarged schematic view of the position B in it;

[0033] Figure 6 is a schematic cross-sectional structure view of the filter barrel and the sand storage barrel of the embodiment of the present application.

[0034] Reference numerals: 1, filter barrel; 11, water inlet pipe; 12, water outlet pipe; 13, filter disc; 131, discharge port; 132, through hole; 133, flattening area; 134, discharging area; 14, motor; 141, limiting groove; 15, first guide wheel; 16, magnetic ring; 161, through hole; 2, sand scraping unit; 21, collar; 211, limiting block; 212, first spring; 22, scraper; 23, reinforcing plate; 3, buoyancy unit; 31, floating plate; 32, lifting plate; 33, limiting rod; 34, first pulling rope; 35, pressing ring; 36, second spring; 37, elastic telescopic rod; 4, sand storage barrel; 41, second guide wheel; 42, water guiding channel; 43, water permeable plate; 44, second opening and closing door; 5, opening and closing unit; 51, first opening and closing door; 52, mounting plate; 53, sliding rod; 54, third spring; 55, second pulling rope; 6, upward pushing unit; 61, water storage box; 611, support rod; 612, water permeable hole; 62, floating ring; 63, ejector rod; 64, connecting rod; 65, limiting ring. Detailed implementation manners

[0035] The following will further describe the present application in detail Figures 1-6 with reference to the accompanying drawings.

[0036] The embodiment of the present application discloses a rainfall drainage and sediment filtration device for building construction. As Figure 1 and Figure 2 shown, a rainfall drainage and sediment filtration device for building construction includes a vertically arranged filter barrel 1. The top of the filter barrel 1 is communicated with a water inlet pipe 11. The bottom of the filter barrel 1 is funnel-shaped and communicated with a water outlet pipe 12. A horizontally arranged filter disc 13 is installed in the filter barrel 1. The water inlet pipe 11 is located above the filter disc 13, and the water outlet pipe 12 is located below the filter disc 13.

[0037] During the process of pumping accumulated water, the inlet pipe of the sludge pump will be inserted into the accumulated water. The outlet pipe of the sludge pump will be communicated with the water inlet pipe 11. The water outlet pipe 12 will be located directly above the sewer. Then the sludge pump will pump the accumulated water. The filter disc 13 will filter the accumulated water. The sediment will accumulate on the upper surface of the filter disc 13. The water body will pass through the filter disc 13 and be discharged into the sewer through the water outlet pipe 12.

[0038] A motor 14 is installed at the bottom of the filter barrel 1. The output shaft of the motor 14 is coaxially arranged with the filter disc 13 and rotatably penetrates through the center of the filter disc 13. The water inlet pipe 11 is located directly above the eccentric position of the filter disc 13, so that the sediment entering the filter barrel 1 will not directly fall onto the output shaft of the motor 14.

[0039] As Figures 2 to 4 shown, a sand scraping unit 2 is slidably fitted on the output shaft of the motor 14 in the vertical direction. The sand scraping unit 2 includes a collar 21 and a scraper 22. The collar 21 is slidably sleeved on the output shaft of the motor 14 in the vertical direction. A limiting block 211 is installed on the inner wall of the collar 21. A limiting groove 141 extending in the vertical direction is provided on the output shaft of the motor 14. The limiting block 211 is slidably embedded in the limiting groove 141, realizing the sliding fit between the collar 21 and the output shaft of the motor 14; the limiting block 211 is connected to the groove wall of the limiting groove 141 through a first spring 212, and the scraper 22 is installed and welded on the outer wall of the collar 21.

[0040] When the accumulated water just enters the filter barrel 1, the first spring 212 will be in a natural state. At this time, the scraper 22 will be arranged at a gap with the filter disc 13. The motor 14 will drive the scraper 22 to rotate through the collar 21. The scraper 22 will flatten the sediment falling on the upper surface of the filter disc 13. The sediment will be simultaneously subjected to the thrust of the scraper 22 and its own centrifugal force, so that the sediment can be evenly spread on the upper surface of the filter disc 13. The thickness of the sediment layer is about 1 cm. At this time, each area of the filter disc 13 can still filter water, but the water filtration speed is slow to prevent a certain area of the filter disc 13 from being completely blocked due to excessive accumulation of sediment; after the sediment is evenly spread on the upper surface of the filter disc 13, the water inlet speed of the accumulated water through the water inlet pipe 11 will be greater than the water filtration speed of the filter disc 13. At this time, the liquid level in the filter barrel 1 will gradually rise.

[0041] As Figure 6 shown, a buoyancy unit 3 and a first guide wheel 15 are provided in the filter barrel 1 above the filter disc 13. The buoyancy unit 3 includes a floating plate 31 and a lifting plate 32 respectively arranged on the inner and outer sides of the filter barrel 1. The floating plate 31 and the lifting plate 32 are connected by two limiting rods 33. The limiting rods 33 are vertically arranged and slidably penetrate through the filter barrel 1 in the vertical direction, so that the floating plate 31 and the lifting plate 32 can only perform lifting movements; the floating plate 31 is connected with a pressing ring 35 through a first pull rope 34. The first pull rope 34 is arranged in an inverted "U" shape. One end of the first pull rope 34 is fixedly connected to the upper surface of the floating plate 31, and the other end of the first pull rope 34 is fixedly connected to the upper surface of the pressing ring 35. The middle part of the first pull rope 34 bypasses the first guide wheel 15, and the first guide wheel 15 is rotatably connected to the filter barrel 1 around its own axis.

[0042] The floating plate 31 is connected to the filter barrel 1 through a second spring 36. There are two second springs 36 in total and they correspond one to one with the limit rod 33. One end of the second spring 36 is fixedly connected to the upper surface of the floating plate 31, and the other end of the second spring 36 is fixedly connected to the inner top wall of the filter barrel 1; the pressure ring 35 is connected to the filter barrel 1 through an elastic telescopic rod 37. The elastic telescopic rod 37 consists of a square rod, a square tube and a spring, that is, one end of the square rod is slidably embedded in the square tube, and this end of the square rod is connected to the square tube through a spring, one end of the elastic telescopic rod 37 is connected to the pressure ring 35, and the other end of the elastic telescopic rod 37 is fixedly connected to the inner top wall of the filter barrel 1.

[0043] When the accumulated water just enters the filter barrel 1, the first spring 212 and the second spring 36 will be in a natural state, the elastic telescopic rod 37 will be in a compressed deformation state, the floating plate 31 will be slightly higher than the scraper 22, the pressure ring 35 will be located above the sleeve ring 21 and not pressed against the sleeve ring 21, and the scraper 22 will flatten the mud and sand on the filter disc 13.

[0044] When the liquid level in the filter barrel 1 gradually rises and the float plate 31 floats up, the second spring 36 will be compressed, the first pull rope 34 will relax, the elastic telescopic rod 37 will return to its natural state and the pressure ring 35 will press down the collar 21, and the collar 21 will drive the scraper 22 to descend and contact the upper surface of the filter disc 13, so that the scraper 22 rotates to push the mud and sand on the filter disc 13 to move, and the mud and sand will gather in front of the scraper 22 in the rotation direction.

[0045] It is worth noting that the floating plate 31 gradually rises, so the pressure ring 35 and the scraper 22 also gradually descend, so that the scraper 22 can scrape the mud and sand layer by layer to ensure that the scraper 22 can smoothly descend to contact the upper surface of the filter disc 13.

[0046] The filter plate 13 is provided with a discharge port 131, the discharge port 131 is connected to the sand storage bucket 4, and an opening and closing unit 5 is provided at the discharge port 131, the opening and closing unit 5 includes a first opening and closing door 51 and a mounting plate 52 which are respectively arranged at the inner and outer sides of the sand storage bucket 4, the first opening and closing plate is inserted into the discharge port 131, the first opening and closing door 51 is connected to the mounting plate 52 through at least two sliding rods 53, and the sliding rod 53 is slidably arranged in the sand storage bucket 4 along the sliding direction of the first opening and closing door 51 in the discharge port 131; the mounting plate 52 is connected to the sand storage bucket 4 through a third spring 54. Bucket 4, there are two third springs 54 and they correspond to the slide bar 53 one by one, one end of the third spring 54 is fixedly connected to the mounting plate 52, and the other end of the third spring 54 is fixedly connected to the sand storage bucket 4; the mounting plate 52 is connected to the lifting plate 32 through a second pull rope 55, one end of the second pull rope 55 is connected to the mounting plate 52, and the other end of the second pull rope 55 is connected to the lower surface of the lifting plate 32; the filter barrel 1 and the sand storage bucket 4 are both rotatably connected with the second guide wheel 41; the middle part of the second pull rope 55 passes around each second guide wheel 41 in turn.

[0047] When water just enters the filter barrel 1, the first spring 212, the second spring 36 and the third spring 54 will be in a natural state. The first opening and closing door 51 will be inserted into the discharge port 131, so that the discharge port 131 is closed. When the liquid level in the filter barrel 1 gradually rises and the floating plate 31 floats up, the floating plate 31 will drive the lifting plate 32 to rise through the limiting rod 33. The lifting plate 32 will pull the first opening and closing door 51 to move away from the discharge port 131 through the second pull rope 55. At this time, the discharge port 131 will be exposed, and the sediment pushed by the scraper 22 will flow into the sand storage barrel 4 together with the water body through the discharge port 131, thus realizing the automatic cleaning of the sediment on the upper surface of the filter disc 13 and making the liquid level in the filter barrel 1 gradually drop.

[0048] As Figures 3 to 5 shown, a through hole 132 is provided at the center of the filter disc 13. A magnetic ring 16 is fixedly embedded in the through hole 132. The output shaft of the motor 14 rotates and passes through the inner side of the magnetic ring 16. The collar 21 is made of iron. When the scraper 22 descends and touches the upper surface of the filter disc 13, the magnetic ring 16 will adsorb the collar 21. Therefore, even if the liquid level in the filter barrel 1 gradually drops below the floating plate 31, the collar 21 will remain at the current height, so that the scraper 22 can still continuously touch the upper surface of the filter disc 13 to thoroughly clean the sediment on the filter disc 13. At the same time, the collar 21 will tighten the floating plate 31 through the first pull rope 34, so that the floating plate 31 also remains at the current height. The floating plate 31 will keep the lifting plate 32 at the current height through the limiting rod 33. The lifting plate 32 will keep the first opening and closing door 51 stationary through the second pull rope 55. At this time, the discharge port 131 will continue to be exposed, so that the sediment on the filter disc 13 can be discharged into the sand storage barrel 4 through the discharge port 131.

[0049] An upper pushing unit 6 is provided below the filter disc 13. The upper pushing unit 6 includes a water storage box 61 arranged in the filter barrel 1. The bottom of the water storage box 61 is fixed on the inner bottom wall of the filter barrel 1 through a plurality of support rods 611. A plurality of water permeable holes 612 are provided at the bottom of the water storage box 61. A floating ring 62 is placed in the water storage box 61. Two top rods 63 are installed on the upper surface of the floating ring 62. The top rods 63 are arranged vertically. Two limiting rings 65 are connected inside the water storage box 61 through a connecting rod 64. The top rods 63 correspond to the limiting rings 65 one by one, and the top rods 63 are slidably embedded in the limiting rings 65 in the vertical direction, so that the floating ring 62 can only move up and down. Two through holes 161 for the top rods 63 to slide through in the vertical direction are provided on the magnetic ring 16.

[0050] When there is a large amount of sediment accumulated on the filter disc 13, the water filtration speed of the filter disc 13 will decrease, the amount of water filtered by the filter disc 13 per unit time will decrease, and the inflow speed of the water passing through the filter disc 13 into the water storage box 61 will be less than the outflow speed of the water in the water storage box 61 passing through the water permeable holes 612. Therefore, the liquid level in the water storage box 61 will gradually decrease until the water in the water storage box 61 is emptied. At this time, the ejector rod 63 will be located below the magnetic ring 16.

[0051] After most of the sediment on the filter disc 13 is discharged through the discharge port 131 into the sand storage bucket 4, the water filtration speed of the filter disc 13 will increase, the amount of water filtered by the filter disc 13 per unit time will increase, and the inflow speed of the water passing through the filter disc 13 into the water storage box 61 will be greater than the outflow speed of the water in the water storage box 61 passing through the water permeable holes 612. Therefore, the liquid level in the water storage box 61 will gradually rise, and the floating ring 62 and the ejector rod 63 will gradually rise. After the sediment on the filter disc 13 is basically cleaned, the liquid level in the water storage box 61 has risen to the designated height. The floating plate 31 will drive the ejector rod 63 to pass through the through hole 161. The ejector rod 63 will upwardly push the lower surface of the collar 21, causing the collar 21 to rise and disengage from the magnetic ring 16. After the collar 21 loses the magnetic attraction of the magnetic ring 16, the first spring 212, the second spring 36, the third spring 54, and the elastic telescopic rod 37 will return to their natural states. The scraper 22 will rise and reset and disengage from the filter disc 13. The floating plate 31 and the lifting plate 32 will descend and reset. The first opening and closing door 51 will move and reset and re-close the discharge port 131, enabling the filter disc 13 to continue filtering the sediment in the accumulated water.

[0052] As Figure 3 shown, it is worth noting that the upper surface of the filter disc 13 is divided into a flattening area 133 and a discharge area 134 which are arranged inside and outside. The scraper 22 is arranged in a "V" shape and can descend and contact the flattening area 133 and the discharge area 134. The height of the flattening area 133 gradually decreases from the center of the filter disc 13 to the edge of the filter disc 13. The water inlet pipe 11 is located directly above the highest point of the flattening area 133. During the rotation of the scraper 22, the sediment pushed by the scraper 22 will slide towards the lower part of the flattening area 133 under the action of its own centrifugal force and gravity, so that the scraper 22 can flatten the sediment on the upper surface of the filter disc 13. The height of the discharge area 134 gradually increases from the center of the filter disc 13 to the edge of the filter disc 13. The discharge port 131 is located in the discharge area 134, so that too much sediment will not accumulate at the discharge port 131, preventing the exposed discharge port 131 from being blocked by excessive sediment accumulation and ensuring the smoothness of the discharge port 131.

[0053] Both ends of the scraper 22 are connected by a reinforcement plate 23. The scraper 22 and the reinforcement plate 23 together form a triangular structure, thus improving the structural strength of the sand scraping unit 2.

[0054] As Figure 6As shown, the bottom of the sand storage bucket 4 is connected to the bottom of the filter bucket 1 through a water guide channel 42, and a water permeable plate 43 is installed at the connection between the water guide channel 42 and the sand storage bucket 4. When the discharge port 131 is closed by the first opening and closing door 51, the water in the sand storage bucket 4 can slowly pass through the water permeable plate 43 and flow out into the filter bucket 1 through the water guide channel 42, so that the water in the sediment can be discharged into the sewer through the water outlet pipe 12.

[0055] A second opening and closing door 44 that can be opened and closed is provided at the bottom of the sand storage bucket 4. One end of the second opening and closing door 44 is rotatably connected to the sand storage bucket 4, and the other end of the second opening and closing door 44 is locked and fixed to the sand storage bucket 4 through a buckle or a screw. By opening the second opening and closing door 44, workers can clean the sediment in the sand storage bucket 4.

[0056] The implementation principle of a rainfall drainage sediment filtration device for building construction in an embodiment of the present application is as follows: During the water accumulation filtration process, the inlet pipe of the sludge pump will be inserted into the water accumulation, the outlet pipe of the sludge pump will be connected to the water inlet pipe 11, and the water outlet pipe 12 will be located directly above the sewer; then the sludge pump will pump the water accumulation into the filter bucket 1, the filter disc 13 will filter the water accumulation, the sediment will accumulate on the upper surface of the filter disc 13, and the water body will pass through the filter disc 13 and be discharged into the sewer through the water outlet pipe 12; at the same time, the motor 14 will drive the scraper 22 to rotate through the collar 21, and the scraper 22 will spread the sediment that has fallen onto the upper surface of the filter disc 13, so that the sediment is evenly spread on the upper surface of the filter disc 13, and the thickness of the sediment layer is about 1 cm. At this time, each area of the filter disc 13 can still continue to filter water to prevent a certain area of the filter disc 13 from being completely blocked due to excessive accumulation of sediment.

[0057] When the sediment on the upper surface of the filter disc 13 gradually increases and causes the liquid level in the filter bucket 1 to rise, the floating plate 31 will float upward when encountering water, the first pull rope 34 will become slack, the elastic telescopic rod 37 will return to its natural state and cause the pressing ring 35 to press down on the collar 21, and the collar 21 will drive the scraper 22 to descend and abut against the upper surface of the filter disc 13. The magnetic ring 16 will stably adsorb the collar 21, so that the scraper 22 can scrape all the sediment on the filter disc 13; at the same time, the floating plate 31 will drive the lifting plate 32 to rise through the limiting rod 33, and the lifting plate 32 will pull the first opening and closing door 51 to move away from the discharge port 131 through the second pull rope 55. At this time, the discharge port 131 will be exposed, and the sediment pushed by the scraper 22 will flow into the sand storage bucket 4 together with the water body through the discharge port 131.

[0058] After most of the sediment on the filter disc 13 is discharged into the sand storage bucket 4 through the discharge port 131, the inflow rate of the water passing through the filter disc 13 into the water storage box 61 will be greater than the outflow rate of the water in the water storage box 61 through the water permeable holes 612. Therefore, the liquid level in the water storage box 61 will gradually rise, and the floating ring 62 and the ejector rod 63 will gradually rise. After the sediment on the filter disc 13 is basically cleaned, the liquid level in the water storage box 61 has risen to the specified height. The floating plate 31 will drive the ejector rod 63 to pass through the through hole 161. The ejector rod 63 will upwardly push the lower surface of the collar 21, causing the collar 21 to rise and disengage from the magnetic ring 16. The first spring 212, the second spring 36, the third spring 54, and the elastic telescopic rod 37 will return to their natural states. The scraper 22 will rise and reset and disengage from the filter disc 13. The floating plate 31 and the lifting plate 32 will descend and reset. The first opening and closing door 51 will move and reset and re-close the discharge port 131, enabling the filter disc 13 to continue filtering the sediment in the accumulated water. The water in the sand storage bucket 4 can slowly pass through the water permeable plate 43 and flow out through the water guiding channel 42 into the filter barrel 1, so that the water in the sediment can be discharged into the sewer through the water outlet pipe 12.

[0059] In summary, the present application can complete the automatic cleaning of the sediment on the upper surface of the filter disc 13, and there is no need to pause the filtration of the accumulated water during the cleaning process of the sediment. That is, the present application can continuously filter the accumulated water for a long time, thereby improving the filtration efficiency of the accumulated water.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rainwater drainage sediment filtering device for construction, characterized in that: The invention comprises a filter barrel (1) having a water inlet pipe (11) and a water outlet pipe (12), wherein a filter disc (13) arranged horizontally is installed in the filter barrel (1), the water inlet pipe (11) is located above the filter disc (13), the water outlet pipe (12) is located below the filter disc (13), a discharge port (131) is provided on the filter disc (13), an opening and closing unit (5) is provided at the discharge port (131), and the discharge port (131) is connected to a sand storage bucket (4); A motor (14) is installed on the filter barrel (1), the output shaft of the motor (14) is coaxially arranged with the filter disc (13) and rotatably penetrates the center of the filter disc (13), and a sand scraping unit (2) is slidably matched with the output shaft of the motor (14) in a vertical direction, and the sand scraping unit (2) is connected to the output shaft of the motor (14) via a first spring (212); A buoyancy unit (3) and a first guide wheel (15) are provided in the filter barrel (1) and are located above the filter disc (13). The buoyancy unit (3) is connected to the filter barrel (1) via a second spring (36), and the buoyancy unit (3) is connected to a pressure ring (35) via a first pull rope (34). The pressure ring (35) is connected to the filter barrel (1) via an elastic telescopic rod (37), and the middle part of the first pull rope (34) passes around the first guide wheel (15). When the second spring (36) is in a natural state, the elastic telescopic rod (37) will be in a deformed state, the first spring (212) will be in a natural state, the pressure ring (35) will be located above the sand scraping unit (2) and will not be pressed against the sand scraping unit (2), and the sand scraping unit (2) and the filter disc (13) will be arranged with a gap; When the buoyancy unit (3) floats up upon contact with water, the elastic telescopic rod (37) will return to a natural state and cause the pressing ring (35) to press down the sand scraping unit (2), and the sand scraping unit (2) will be pressed downwardly against the upper surface of the filter disc (13).

2. A rainwater drainage sediment filtering device for construction according to claim 1, characterized in that: The opening and closing unit (5) is slidably inserted into the discharge port (131) and slidably penetrates the sand storage bucket (4); the opening and closing unit (5) is connected to the sand storage bucket (4) via a third spring (54); and the opening and closing unit (5) is connected to the buoyancy unit (3) via a second pull rope (55); and a second guide wheel (41) for the second pull rope (55) to pass around is provided on both the filter barrel (1) and the sand storage bucket (4); When the second spring (36) is in a natural state, the third spring (54) will be in a natural state, and the opening and closing unit (5) will be closed at the discharge port (131); When the buoyancy unit (3) floats up upon encountering water, the buoyancy unit (3) will pull the opening and closing unit (5) through the second pull rope (55) to move away from the discharge port (131).

3. A rainwater drainage mud and sand filtering device for construction according to claim 2, characterized in that: A through hole (132) is provided at the center of the filter disc (13), a magnetic ring (16) is provided in the through hole (132), the magnetic ring (16) is used to absorb the sand scraping unit (2) that descends and abuts against the filter disc (13), and the output shaft of the motor (14) is rotatably provided to penetrate the inner side of the magnetic ring (16); A lifting unit (6) for lifting the sand scraping unit (2) and separating it from the magnetic ring (16) is provided below the filter disc (13).

4. A rainwater drainage mud and sand filtering device for construction according to claim 3, characterized in that: The upper lift unit (6) comprises a water storage box (61) arranged in the filter barrel (1), a plurality of water permeable holes (612) are arranged at the bottom of the water storage box (61), a floating ring (62) is placed in the water storage box (61), a push rod (63) is arranged on the floating ring (62), and a penetration hole (161) is arranged on the magnetic ring (16) for the push rod (63) to slide and penetrate in a vertical direction; When the drainage speed of the water permeable hole (612) is lower than the water receiving speed of the water storage box (61), the floating ring (62) will float up and push the sand scraping unit (2) up and away from the magnetic ring (16) through the push rod (63).

5. A rainwater drainage mud and sand filtering device for construction according to claim 4, characterized in that: The bottom of the sand storage bucket (4) is connected to the bottom of the filter bucket (1) through a water guide channel (42), and a water permeable plate (43) is installed at the connection point between the water guide channel (42) and the sand storage bucket (4).

6. A rainwater drainage mud and sand filtering device for construction according to any one of claims 1 to 5, characterized in that: The upper surface of the filter disc (13) is divided into a flattening area (133) and a discharge area (134) arranged inside and outside, the height of the flattening area (133) gradually decreases from the center of the filter disc (13) to the edge of the filter disc (13), the height of the discharge area (134) gradually increases from the center of the filter disc (13) to the edge of the filter disc (13), and the discharge port (131) is located in the discharge area (134).

7. A rainwater drainage mud and sand filtering device for construction according to claim 6, characterized in that: The sand scraping unit (2) comprises a sleeve ring (21) and a scraper (22) arranged in a "V" shape. The sleeve ring (21) is slidably matched with the output shaft of the motor (14) in the vertical direction. The scraper (22) is arranged on the sleeve ring (21), and the scraper (22) can be lowered to contact the flattening area (133) and the discharge area (134). The two ends of the scraper (22) are connected by a reinforcing plate (23), and the scraper (22) and the reinforcing plate (23) together form a triangular structure.

8. The rainwater drainage mud and sand filtering device for construction according to claim 2, characterized in that: The buoyancy unit (3) comprises a floating plate (31) and a lifting plate (32) respectively arranged on the inner and outer sides of the filter barrel (1); the floating plate (31) and the lifting plate (32) are connected via a limiting rod (33); the limiting rod (33) is slidably arranged in the filter barrel (1) along the vertical direction; the floating plate (31) is connected to the pressure ring (35) via the first pull rope (34), and the floating plate (31) is connected to the filter barrel (1) via the second spring (36); the lifting plate (32) is connected to the opening and closing unit (5) via the second pull rope (55).

9. The rainwater drainage mud and sand filtering device for construction according to claim 3, characterized in that: The opening and closing unit (5) comprises a first opening and closing door (51) and a mounting plate (52) respectively arranged on both sides of the inside and outside of the sand storage bucket (4); the first opening and closing plate is inserted into the discharge port (131); the first opening and closing door (51) is connected to the mounting plate (52) through at least two sliding rods (53); the sliding rods (53) are slidably arranged in the sand storage bucket (4) along the sliding direction of the first opening and closing door (51) in the discharge port (131); the mounting plate (52) is connected to the sand storage bucket (4) through the third spring (54); and the mounting plate (52) is connected to the lifting plate (32) through the second pull rope (55).

10. The rainwater drainage mud and sand filtering device for construction according to claim 1, characterized in that: A second opening and closing door (44) is provided at the bottom of the sand storage bucket (4).

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