A sewage filtration device for water conservancy projects

Abstract

This invention relates to the field of water conservancy engineering technology, and in particular to a sewage filtration device for water conservancy projects. The device includes a filter tank with an inlet pipe connected to one side. A filter plate is installed inside the inlet pipe. A T-shaped cylinder is installed at the top of the filter tank. A water-guiding plate is installed on the inner wall of the filter tank. A cleaning mechanism is provided at the top of the filter plate. The cleaning mechanism includes a rotating shaft A that rotates inside the T-shaped cylinder. A fan blade is fitted onto the outer wall of the rotating shaft A. This invention uses a pusher plate that moves along the axis of a scraper, and a slider that slides along the bottom groove of the scraper to increase the angle between the two sets of pushers. The end of the pusher plate approaches the inner wall of the filter tank, creating a pushing force on the sediment and other impurities accumulated on the surface of the filter plate. This achieves active cleaning to avoid pore blockage, ensuring stable sewage filtration efficiency. It eliminates the need for manual intervention, reducing downtime for cleaning, lowering maintenance intensity, and improving the continuous operation capability of the device.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, and in particular to a sewage filtration device for water conservancy projects. Background Technology

[0002] As a core component of my country's infrastructure construction, water conservancy projects generate a large amount of wastewater during construction and operation, mainly including construction vehicle washing water, concrete wastewater, and machinery operation wastewater. This type of wastewater generally contains high concentrations of silt, suspended particulate matter, colloidal substances, and small amounts of chemical pollutants. If discharged directly without effective treatment, it will not only cause turbidity in surrounding water bodies and sediment deposition, disrupting the balance of the aquatic ecosystem, but may also affect groundwater quality, thereby threatening residents' lives and regional ecological security. Currently, the most widely used wastewater purification method in the field of water conservancy projects is still based on filter screen interception technology, which uses the porous structure of filter media to block solid impurities in wastewater, thereby achieving preliminary water purification.

[0003] However, in existing technologies, silt and sand in sewage are generally intercepted by filters. When the filters become clogged, the machine must be stopped and the equipment must be disassembled and the impurities removed manually. The entire cleaning process is not only time-consuming and labor-intensive, but also inefficient and interrupts the sewage treatment process. Especially during peak construction periods with large sewage discharge, frequent shutdowns for cleaning will seriously affect the progress of the project.

[0004] In view of this, this paper studies and improves upon existing problems, and provides a sewage filtration device for water conservancy projects. The aim is to solve the problems and improve the practical value through this technology. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a sewage filtration device for water conservancy projects.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sewage filtration device for water conservancy projects, comprising a filter tank, an inlet pipe connected to one side of the filter tank, a filter plate installed inside the inlet pipe, a T-shaped cylinder installed at the top of the filter tank, a water guide plate installed on the inner wall of the filter tank, and a purification box connected to the bottom of the filter tank. The top of the filter plate is provided with a cleaning mechanism, which includes a rotating shaft A that rotates inside the T-shaped cylinder. The outer wall of the rotating shaft A is fitted with fan blades. The bottom end of the rotating shaft A is connected to a rotating shaft B via a magnetic coupler. Multiple sets of scrapers are installed on the outer wall of the bottom end of the rotating shaft B. The bottom end of the scrapers is provided with a sliding groove. A slider slides inside the sliding groove. The bottom end of the slider is provided with two sets of symmetrical push plates. One end of the push plate is hinged to a hinge seat. The top end of the hinge seat is equipped with a magnetic block A. The outer wall of the filter tank is equipped with a magnetic block B that is at the same horizontal line as the magnetic block A. A piston slides inside the rotating shaft B. A pull rope is fixed between the side wall of the magnetic block B and the bottom end of the piston. A spring A is installed at the bottom end of the piston. The filter plate is provided with an auxiliary mechanism at its bottom end, and the T-shaped cylinder is provided with an adjustment mechanism inside.

[0007] Preferably, the scraper has a scraper blade at its bottom end, and the scraper blade is made of rubber material.

[0008] Preferably, the two sets of push plates are connected by a flexible sheet, and the magnetic surfaces of magnetic block A and magnetic block B have the same magnetism.

[0009] Preferably, the auxiliary mechanism includes a sliding rod that slides inside the rotating shaft B, a base is fixed to the bottom end of the sliding rod, a fixing frame is fixed to the side wall of the base, a plurality of equally spaced nozzles are embedded in the surface of the fixing frame, a connecting pipe is connected between the bottom of the nozzle and the bottom of the base, and the jet end of the nozzle is aligned with the filter holes on the surface of the filter plate.

[0010] Preferably, a spring B is sleeved on the outer wall of the sliding rod, the top end of the spring B is fixed to the bottom end of the filter plate, and the bottom end of the spring B is fixed to the top end of the base.

[0011] Preferably, the side wall of the rotating shaft B is connected to an air intake pipe that extends through the filter tank, and an exhaust pipe is connected between the rotating shaft B and the base. The base has a hollow structure.

[0012] Preferably, a one-way intake valve is installed inside the intake pipe, and a one-way exhaust valve is installed inside the exhaust pipe.

[0013] Preferably, the control mechanism includes a turntable that rotates in the inner cavity of the top end of the T-shaped cylinder. The bottom end of the turntable is fixedly connected to the top end of the rotating shaft A. The side wall of the rotating shaft A is provided with an installation groove. A centrifugal block slides inside the installation groove. An elastic plate is installed in the inner cavity of the top end of the T-shaped cylinder. A sleeve is installed in the side wall of the T-shaped cylinder. A friction block is sleeved in the side wall of the rotating shaft B. A push rod that penetrates into the interior of the T-shaped cylinder slides inside the sleeve. A friction plate is installed at one end of the push rod.

[0014] Preferably, a spring C is installed inside the mounting groove, one end of the spring C is fixedly connected to the inner wall of the mounting groove, and the other end of the spring C is fixedly connected to one end of the centrifugal block. A spring D is provided inside the sleeve, and the spring D is sleeved on the outer wall of the push rod.

[0015] Preferably, the filter tank has a drain outlet on its side wall, and a collection box connected to the drain outlet is welded to the side wall of the filter tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes the rotation of fan blades under the thrust of water flow to drive the rotation of shaft A. Shaft A drives shaft B to rotate synchronously via a magnetic coupler, causing the scraper to move in a circular motion along the surface of the filter plate. The scraper drives the hinge seat and the top magnetic block A to rotate. When magnetic block A and the corresponding magnetic block B are attracted by magnetic force, the hinge seat is pulled to move and pushes the pusher plate to move along the scraper axis. The slider slides along the bottom groove of the scraper, increasing the angle between the two sets of pushers. The end of the pusher plate approaches the inner wall of the filter tank, creating a thrust on the sediment and other impurities accumulated on the surface of the filter plate, thus achieving active cleaning. To avoid pore blockage and ensure stable wastewater filtration efficiency, the system eliminates the need for manual intervention and shutdown cleaning, reducing maintenance intensity and improving continuous operation capability. Simultaneously, when the slider reaches the end of the chute, the pusher plate angle reaches its maximum value, covering the area from the filter plate surface to the inner wall of the filter tank. The pusher plate's squeezing force extrudes the wastewater trapped in the sludge, forming a low-moisture-content solid sludge. The extruded wastewater can then re-enter the filtration process, improving wastewater treatment efficiency while preventing secondary pollution, ensuring a highly efficient and environmentally friendly filtration and cleaning process.

[0017] 2. This invention utilizes the piston's downward movement to contact and push the sliding rod downwards synchronously. This, in turn, causes multiple nozzles to move downwards via the base and sidewall mounting bracket. Spring B, fitted onto the outer wall of the sliding rod, is stretched and accumulates elastic potential energy. When the piston moves upwards, spring B releases this elastic potential energy, propelling the base and nozzles upwards rapidly. The nozzles strike the bottom of the filter plate, generating high-frequency micro-vibrations that disrupt the adhesion between impurities like silt and the filter plate, reducing adhesion and improving the thoroughness of scraping by the scraper, thus preventing impurity residue. Simultaneously, the downward movement of the piston creates negative pressure inside the rotating shaft B, drawing in outside air through the suction pipe. The upward movement of the piston compresses the internal gas, and the high-pressure gas is delivered to the nozzles through the exhaust pipe, base, and connecting pipe. The nozzle's jet nozzle aligns with the filter holes of the filter plate, creating a high-speed airflow that counter-sweeps, complementing the scraping action of the scraper. This blows away fine impurities from the filter holes, solving the problem of pore blockage, preventing increased filtration resistance and pump load, and ensuring smooth wastewater filtration.

[0018] 3. This invention utilizes the fact that as the volume of sewage increases, the sewage flow rate inside the T-shaped cylinder also increases synchronously. The increased impact force of the water flow on the fan blades causes the fan blades and the fixedly connected rotating shaft A to rotate faster, driving the turntable to rotate at high speed in the inner cavity at the top of the T-shaped cylinder. The increased rotation speed of the turntable causes the centrifugal block to move outward along the mounting groove on the side wall of the rotating shaft A under the action of centrifugal force, squeezing the elastic sheet in the inner cavity at the top of the T-shaped cylinder and deforming it. The deformation of the elastic sheet compresses the surrounding gas, causing the regional air pressure to rise. The resulting thrust pushes the push rod inside the sleeve to move outward, causing the end friction plate to adhere to the side of the friction block. The frictional force hinders the rotation of the rotating shaft B, effectively reducing the rotation speed of the rotating shaft B, avoiding excessive scraping and damage to the filter plate by the scraper, extending the service life of the filter plate, and preventing the accumulation of impurities and blockage that affects the filtration efficiency, thus ensuring the stable filtration performance of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the filter tank of the present invention; Figure 3 This is one of the cross-sectional structural diagrams of the filter tank of the present invention; Figure 4 This is a second cross-sectional structural diagram of the filter tank of the present invention; Figure 5 This is a three-dimensional structural diagram of the cleaning mechanism of the present invention; Figure 6 This is a partial structural schematic diagram of the present invention; Figure 7 This is a three-dimensional structural diagram of the auxiliary mechanism of the present invention; Figure 8 This is a three-dimensional structural diagram of the control mechanism of the present invention.

[0020] Legend: 1. Filter tank; 2. Inlet pipe; 3. Filter plate; 4. T-shaped cylinder; 51. Shaft A; 52. Fan blade; 53. Shaft B; 54. Scraper; 55. Slide groove; 56. Slider; 57. Push plate; 58. Hinge seat; 59. Magnetic block A; 510. Magnetic block B; 511. Piston; 512. Spring A; 513. Pull rope; 61. Sliding rod; 62. Base; 63. Fixing frame; 64. Nozzle; 65. Connecting pipe; 66. Spring B; 67. Intake pipe; 68. Exhaust pipe; 71. Turntable; 72. Mounting groove; 73. Centrifugal block; 74. Spring C; 75. Elastic plate; 76. Sleeve; 77. Push rod; 78. Friction plate; 79. Friction block; 710. Spring D; 8. Water inlet plate; 9. Collection box; 10. Purification box. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] See Figures 1 to 8 As shown, the present invention provides a sewage filtration device for water conservancy projects, including a filter tank 1, an inlet pipe 2 connected to one side of the filter tank 1, a filter plate 3 installed inside the inlet pipe 2, a T-shaped cylinder 4 installed at the top of the filter tank 1, a water guide plate 8 installed on the inner wall of the filter tank 1, and a purification box 10 connected to the bottom of the filter tank 1. The top of the filter plate 3 is equipped with a cleaning mechanism, which includes a rotating shaft A51 that rotates inside the T-shaped cylinder 4. The outer wall of the rotating shaft A51 is fitted with a fan blade 52. The bottom end of the rotating shaft A51 is equipped with a rotating shaft B53 through a magnetic coupler. Multiple scraper blades 54 are installed on the outer wall of the bottom end of the rotating shaft B53. The bottom end of the scraper blade 54 is provided with a groove 55. A slider 56 slides inside the groove 55. The bottom end of the slider 56 is provided with two sets of symmetrical push plates 57. One end of the push plate 57 is hinged to a hinge seat 58. A magnetic block A59 is installed at the top of the hinge seat 58. A magnetic block B510 is installed on the outer wall of the filter tank 1, which is at the same horizontal line as the magnetic block A59. A piston 511 slides inside the rotating shaft B53. A pull rope 513 is fixed between the side wall of the magnetic block B510 and the bottom end of the piston 511. A spring A512 is installed at the bottom end of the piston 511. It should be noted that when sewage filtration is required, the external pump is started first. The pump, as a power source, transports the sewage to be treated through the inlet pipe 2 into the T-shaped cylinder 4 of the device. The sewage entering the T-shaped cylinder 4 falls down the cylinder wall and onto the surface of the water guide plate 8. It then falls down along its inclined surface onto the surface of the filter plate 3 inside the filter tank 1. The filter plate 3 is used to filter solid impurities in the sewage, thus achieving basic sewage purification treatment. As a large amount of sewage flows through the T-shaped cylinder 4, the flowing sewage directly impacts the fan blades 52 inside the T-shaped cylinder 4. Under the thrust of the water flow, the fan blades 52 begin to rotate, which in turn drives the rotating shaft A51, which is fixedly connected to it, to rotate synchronously. Since the bottom end of the rotating shaft A51 is connected to the rotating shaft B53 through a magnetic coupler, the rotation of the rotating shaft A51 directly drives the rotating shaft B53 to rotate as well. The multiple sets of scrapers 54 installed on the outer wall of the bottom end of the rotating shaft B53 then rotate along with it. Driven by 53, the scraper 54 moves in a circular motion along the surface of the filter plate 3. At the same time, the scraper 54 drives the hinge seat 58 and the magnetic block A59 at its top to rotate together via the push plate 57. As the magnetic block A59 rotates with the scraper 54, whenever the magnetic block A59 moves to a position relative to the magnetic block B510, the magnetic attraction between the magnetic block A59 and the magnetic block B510 will pull the magnetic block A59 closer to the side of the magnetic block B510. The movement of the magnetic block A59 directly drives the hinge seat 58. When displacement occurs, the hinge seat 58 further pushes the push plate 57, which is hinged to it, to move along the axis of the scraper 54. The movement of the push plate 57 will drive the slider 56 at its top to slide along the groove 55 at the bottom of the scraper 54. As the slider 56 slides, the included angle between the two sets of opposing push plates 57 gradually increases, and the end of the push plate 57 gradually approaches the inner wall of the filter tank 1. During this process, the surface of the push plate 57 will exert a pushing force on the mud and sand and other impurities accumulated on the surface of the filter plate 3, thereby achieving active cleaning of the surface of the filter plate 3. This avoids the problem of pore blockage of the filter plate 3 caused by long-term accumulation of impurities, ensuring that the filtration channel is always unobstructed, and thus ensuring that the sewage filtration efficiency is maintained at a stable level. This solves the drawback of traditional filtration devices that require frequent shutdowns for cleaning due to blockage. At the same time, no manual intervention is required for cleaning, which not only saves the tedious process of manual cleaning and reduces the labor intensity of maintenance personnel, but also improves the continuous operation capability and overall work efficiency of the device. When the magnetic block A59 moves toward the inner wall of the filter tank 1, the magnetic block A59 drives the piston 511 to move downward along the inside of the rotating shaft B53 via the pull rope 513. At this time, the spring A512 is compressed and accumulates elastic potential energy. When the magnetic block A59 disengages from the opposite side of the magnetic block B510, the spring A512 releases the elastic potential energy, causing the push plate 57 to quickly reset, thus facilitating the next cleaning. When the slider 56 slides to the end of the chute 55, the included angle between the two sets of push plates 57 reaches its maximum value. At this time, the cleaning range of the push plate 57 covers the area from the surface of the filter plate 3 to the inner wall of the filter tank 1, which can push the mud and sand on the filter plate 3 to the inner wall of the filter tank 1. At the same time, the squeezing force generated by the push plate 57 during the pushing process will squeeze out the sewage wrapped inside the mud and sand, so that the mud and sand form a solid slag with low water content. This squeezed-out sewage can re-enter the filtration process, which not only improves the sewage treatment efficiency, but also avoids secondary pollution caused by the mud and sand carrying a large amount of sewage, ensuring the efficiency and environmental protection of the entire filtration and cleaning process.

[0023] The bottom of the filter plate 3 is equipped with an auxiliary mechanism, and the inside of the T-shaped cylinder 4 is equipped with an adjustment mechanism.

[0024] In an optional embodiment: the bottom end of the scraper 54 is provided with a scraper blade, which is made of rubber material. The rubber scraper blade is flexible and can form a tight fit when in contact with the surface of the filter plate 3, which can efficiently scrape off mud and sand impurities on the plate, and will not cause hard scratch damage to the surface of the filter plate 3 due to its own elasticity.

[0025] In an optional embodiment: the two sets of push plates 57 are connected by a flexible sheet. The magnetic blocks A59 and B510 have the same magnetic properties on their opposite surfaces. The flexible sheet can form a continuous shielding surface when the push plates 57 are opened and closed, preventing impurities from leaking through the gaps between the push plates 57. The repulsive force generated by the magnetic blocks A59 and B510 having the same magnetic properties on their opposite surfaces can provide stable power for the push plates 57 to unfold, enabling the push plates 57 to push impurities to the inner wall of the filter tank 1 more efficiently.

[0026] In an optional embodiment: the auxiliary mechanism includes a sliding rod 61 that slides inside the rotating shaft B53, a base 62 is fixed to the bottom end of the sliding rod 61, a fixing frame 63 is fixed to the side wall of the base 62, a plurality of equally spaced nozzles 64 are embedded in the surface of the fixing frame 63, a connecting pipe 65 is connected between the bottom of the nozzles 64 and the bottom of the base 62, and the jet end of the nozzles 64 is aligned with the filter holes on the surface of the filter plate 3.

[0027] In an optional embodiment: a spring B66 is sleeved on the outer wall of the sliding rod 61, the top end of the spring B66 is fixed to the bottom end of the filter plate 3, and the bottom end of the spring B66 is fixed to the top end of the base 62.

[0028] In an optional embodiment: the side wall of the rotating shaft B53 is connected to an air intake pipe 67 that extends through the filter tank 1, and an exhaust pipe 68 is connected between the rotating shaft B53 and the base 62. The base 62 has a hollow structure.

[0029] In an optional embodiment: a one-way intake valve is installed inside the intake pipe 67, and a one-way exhaust valve is installed inside the exhaust pipe 68. The one-way intake valve only allows outside air to enter the shaft B53 from the intake pipe 67, and the one-way exhaust valve only allows gas inside the shaft B53 to be forced out from the exhaust pipe 68 to the base 62.

[0030] It should be noted that when the piston 511 moves downward, its bottom end will contact the sliding rod 61 and push the sliding rod 61 to slide downward synchronously. The downward movement of the sliding rod 61 will drive the base 62 to move downward together. The base 62 will drive multiple sets of nozzles 64 to move downward synchronously through the fixing bracket 63 on the side wall. During this process, the spring B66 sleeved on the outer wall of the sliding rod 61 will be stretched, thereby accumulating elastic potential energy. When the piston 511 moves upward, the spring B66 will release the accumulated elastic potential energy and generate a restoring force, pushing the base 62 to move upward. The base 62 will drive the nozzles 64 to move upward quickly until the nozzles 64 hit the bottom end of the filter plate 3. The impact force will cause the filter plate 3 to generate high-frequency micro-vibration. This vibration can effectively destroy the bonding structure between impurities such as mud and sand and the surface of the filter plate 3, reduce the bonding force between impurities and the filter plate 3, make the scraper 54 surface scraped more thoroughly, and avoid impurities remaining due to strong adhesion. Simultaneously, as piston 511 moves downward, the space inside shaft B53 expands due to the downward movement of piston 511, creating a negative pressure environment. Outside air is drawn into shaft B53 through the suction pipe 67, which connects to the side wall of shaft B53, under the influence of the pressure difference. When piston 511 moves upward, it compresses the space inside shaft B53, increasing the internal pressure. The compressed gas is then forced into base 62 through exhaust pipe 68, which connects shaft B53 and base 62. Subsequently, the gas is transported through base 62 to the connecting pipe 65, and finally through the fixed... Multiple sets of nozzles 64 embedded in the frame 63 spray out at high speed. Since the jet end of the nozzle 64 is precisely aligned with the filter holes on the surface of the filter plate 3, the high-speed airflow can directly act on the inside of the filter holes, forming a strong reverse blowing effect. This effectively complements the surface scraping of the cleaning mechanism. The airflow sprayed by the nozzle 64 can directly blow away the fine impurities blocked in the filter holes, solving the problem of pore blockage that is difficult to reach by the mechanical scraping of the scraper 54. This avoids the problem of increased filtration resistance and increased pump load caused by pore blockage, ensuring the smoothness of sewage filtration.

[0031] In an optional embodiment: the control mechanism includes a turntable 71 that rotates in the inner cavity of the top end of the T-shaped cylinder 4. The bottom end of the turntable 71 is fixedly connected to the top end of the rotating shaft A51. The side wall of the rotating shaft A51 is provided with a mounting groove 72. A centrifugal block 73 slides inside the mounting groove 72. An elastic plate 75 is installed in the inner cavity of the top end of the T-shaped cylinder 4. A sleeve 76 is installed in the side wall of the T-shaped cylinder 4. A friction block 79 is sleeved in the side wall of the rotating shaft B53. A push rod 77 that penetrates into the interior of the T-shaped cylinder 4 slides inside the sleeve 76. A friction plate 78 is installed at one end of the push rod 77.

[0032] In an optional embodiment: a spring C74 is installed inside the mounting groove 72, one end of the spring C74 is fixedly connected to the inner wall of the mounting groove 72, and the other end of the spring C74 is fixedly connected to one end of the centrifugal block 73. A spring D710 is provided inside the sleeve 76, and the spring D710 is sleeved on the outer wall of the push rod 77.

[0033] It should be noted that when the wastewater volume increases during the wastewater filtration process, the wastewater flow rate entering the T-shaped cylinder 4 increases synchronously, and the impact force of the water flow on the fan blade 52 increases accordingly. This increased impact force directly causes the fan blade 52 to rotate faster, which in turn drives the rotating shaft A51, which is fixedly connected to it, to rotate faster. The high-speed rotation of the rotating shaft A51 will cause the turntable 71 to rotate synchronously at high speed in the inner cavity at the top of the T-shaped cylinder 4. The increase in the rotation speed of the turntable 71 will increase the centrifugal force it generates. Under the action of centrifugal force, the centrifugal block 73 moves outward along the mounting groove 72 on the side wall of the rotating shaft A51. During the movement, the centrifugal block 73 will squeeze the elastic plate 75 in the inner cavity at the top of the T-shaped cylinder 4, causing the elastic plate 75 to deform. The deformation of the elastic plate 75 will squeeze the surrounding T-shaped cylinder 4. The gas inside the top of the cylinder 4 increases the air pressure in that area. The increased air pressure creates a thrust that acts on the push rod 77 inside the sleeve 76, pushing the push rod 77 to move to one end of the sleeve 76. As the push rod 77 moves, it drives the friction plate 78 at its end to move synchronously until the friction plate 78 is tightly attached to the side of the friction block 79. The friction between the friction plate 78 and the friction block 79 will hinder the rotation of the rotating shaft B53. At the same time, under the force transmission adjustment of the magnetic coupler, the rotation speed of the rotating shaft B53 is effectively reduced, thereby reducing the excessive scraping damage of the scraper 54 to the filter plate 3, extending the service life of the filter plate 3, avoiding the filter plate 3 from being blocked by impurities and affecting the filtration efficiency, and ensuring that the filtration performance of the device remains stable.

[0034] In an optional embodiment: the side wall of the filter tank 1 is provided with a drain port, and a collection box 9 connected to the drain port is welded to the side wall of the filter tank 1. The mud and sand and other impurities pushed by the scraper 54 and the pusher 57 can directly enter the collection box 9 through the drain port, so as to realize the centralized collection and storage of impurities.

[0035] Working principle: When sewage filtration is required, the external pump is started first. The pump, as the power source, transports the sewage to be treated through the inlet pipe 2 to the T-shaped cylinder 4 of the device. The sewage entering the T-shaped cylinder 4 falls down the cylinder wall and onto the surface of the water guide plate 8. It then falls down along its inclined surface to the surface of the filter plate 3 inside the filter tank 1. The filter plate 3 is used to filter solid impurities in the sewage, thus achieving basic sewage purification treatment. As a large amount of sewage flows through the T-shaped cylinder 4, the flowing sewage directly impacts the fan blades 52 inside the T-shaped cylinder 4. Under the thrust of the water flow, the fan blades 52 begin to rotate, which in turn drives the rotating shaft A51, which is fixedly connected to it, to rotate synchronously. Since the bottom end of the rotating shaft A51 is connected to the rotating shaft B53 through a magnetic coupler, the rotation of the rotating shaft A51 directly drives the rotating shaft B53 to rotate as well. The multiple scrapers 54 installed on the outer wall of the bottom end of the rotating shaft B53 then move in a circular motion along the surface of the filter plate 3 under the drive of the rotating shaft B53. At the same time, the scrapers 54 drive the hinge seat 58 and the magnetic block A59 at its top to rotate together through the push plate 57. As the magnetic block A59 rotates with the scraper 54, whenever the magnetic block A59 moves to the position of the magnetic block B53, the magnetic block B53 rotates. When the relative positions of 510 are such that the magnetic attraction between magnetic block A59 and magnetic block B510 pulls magnetic block A59 closer to magnetic block B510, the movement of magnetic block A59 directly causes the hinge seat 58 to move, and the hinge seat 58 further pushes the push plate 57 hinged to it to move along the axis of scraper 54. The movement of push plate 57 will cause the slider 56 at its top to slide along the groove 55 opened at the bottom of scraper 54. As the slider 56 slides, the included angle between the two sets of push plates 57 gradually increases, and the end of push plate 57 gradually moves closer to the inner wall of filter tank 1. During this process, the plate surface of push plate 57 will exert a pushing force on the mud and sand and other impurities accumulated on the surface of filter plate 3, thereby achieving active cleaning of the surface of filter plate 3. When the magnetic block A59 moves toward the inner wall of the filter tank 1, the magnetic block A59 drives the piston 511 to move downward along the inside of the rotating shaft B53 via the pull rope 513. At this time, the spring A512 is compressed and accumulates elastic potential energy. When the magnetic block A59 disengages from the opposite side of the magnetic block B510, the spring A512 releases the elastic potential energy, causing the push plate 57 to quickly reset, thus facilitating the next cleaning. When the slider 56 slides to the end of the groove 55, the included angle between the two sets of push plates 57 reaches its maximum value. At this time, the cleaning range of the push plate 57 covers the area from the surface of the filter plate 3 to the inner wall of the filter tank 1, which can push the mud and sand on the filter plate 3 to the inner wall of the filter tank 1. At the same time, the squeezing force generated by the push plate 57 during the pushing process will squeeze out the sewage wrapped inside the mud and sand. When piston 511 moves downward, its bottom end contacts sliding rod 61 and pushes sliding rod 61 to slide downward synchronously. The downward movement of sliding rod 61 causes base 62 to move downward together. Base 62 then drives multiple sets of nozzles 64 to move downward synchronously through the fixing bracket 63 on the side wall. During this process, spring B66 sleeved on the outer wall of sliding rod 61 is stretched, thereby accumulating elastic potential energy. When piston 511 moves upward, spring B66 releases the accumulated elastic potential energy and generates a restoring force, pushing base 62 to move upward. Base 62 drives nozzle 64 to move upward rapidly until nozzle 64 hits the bottom end of filter plate 3. The impact force causes filter plate 3 to generate high-frequency micro-vibration. Meanwhile, when piston 511 moves downward, the space inside shaft B53 expands due to the downward movement of piston 511, forming a negative pressure environment. Under the action of air pressure difference, outside air is drawn into the interior of shaft B53 through the air intake pipe 67 connected to the side wall of shaft B53. When piston 511 moves upward, it compresses the interior space of shaft B53, causing the internal air pressure to rise. The compressed gas is forced into the base 62 through the exhaust pipe 68 connected between shaft B53 and base 62. Then the gas is transported to the interior of connecting pipe 65 through base 62, and finally ejected at high speed through multiple sets of nozzles 64 embedded in the fixing frame 63. Since the jet end of nozzle 64 is precisely aligned with the filter hole on the surface of filter plate 3, the high-speed airflow can directly act on the interior of filter hole, forming a strong reverse blowing effect. When the wastewater volume increases during the wastewater filtration process, the wastewater flow rate entering the T-shaped cylinder 4 increases synchronously, and the impact force of the water flow on the fan blades 52 increases accordingly. This increased impact force directly causes the fan blades 52 to rotate faster, which in turn drives the rotating shaft A51, which is fixedly connected to it, to rotate faster. The high-speed rotation of the rotating shaft A51 will drive the turntable 71 to rotate synchronously at high speed in the inner cavity at the top of the T-shaped cylinder 4. The increased rotation speed of the turntable 71 increases the centrifugal force it generates. Under the action of centrifugal force, the centrifugal block 73 moves outward along the mounting groove 72 on the side wall of the rotating shaft A51. During the movement, the centrifugal block 73 will exert force on the elastic sheet 75 in the inner cavity at the top of the T-shaped cylinder 4. The compression causes the elastic plate 75 to deform. The deformation of the elastic plate 75 compresses the gas inside the top of the T-shaped cylinder 4 around it, causing the air pressure in that area to rise. The increased air pressure creates a thrust that acts on the push rod 77 inside the sleeve 76, pushing the push rod 77 to move to one end of the sleeve 76. As the push rod 77 moves, it drives the friction plate 78 at its end to move synchronously until the friction plate 78 is tightly attached to the side of the friction block 79. The friction force generated between the friction plate 78 and the friction block 79 will hinder the rotation of the rotating shaft B53. At the same time, under the force transmission adjustment of the magnetic coupler, the rotation speed of the rotating shaft B53 is effectively reduced.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wastewater filtration device for water conservancy projects, comprising a filter tank (1), characterized in that: The filter tank (1) is connected to a water inlet pipe (2) on one side. A filter plate (3) is installed inside the water inlet pipe (2). A T-shaped cylinder (4) is installed at the top of the filter tank (1). A water guide plate (8) is installed on the inner wall of the filter tank (1). A purification box (10) is connected to the bottom of the filter tank (1). The top of the filter plate (3) is provided with a cleaning mechanism, which includes a rotating shaft A (51) that rotates inside the T-shaped cylinder (4). The outer wall of the rotating shaft A (51) is fitted with fan blades (52). The bottom end of the rotating shaft A (51) is fitted with a rotating shaft B (53) via a magnetic coupler. The bottom outer wall of the rotating shaft B (53) is fitted with multiple sets of scrapers (54). The bottom end of the scraper (54) is provided with a groove (55). A slider (56) slides inside the groove (55). The bottom end of the slider (56) is rotatably equipped with a... Two sets of symmetrical push plates (57), one end of the push plate (57) is hinged to a hinge seat (58), the top of the hinge seat (58) is equipped with a magnetic block A (59), the outer wall of the filter tank (1) is equipped with a magnetic block B (510) at the same horizontal line as the magnetic block A (59), a piston (511) slides inside the rotating shaft B (53), a pull rope (513) is fixed between the side wall of the magnetic block B (510) and the bottom end of the piston (511), and a spring A (512) is installed at the bottom end of the piston (511). The bottom of the filter plate (3) is provided with an auxiliary mechanism, and the inside of the T-shaped cylinder (4) is provided with an adjustment mechanism.

2. The sewage filtration device for water conservancy projects according to claim 1, characterized in that: The scraper (54) has a scraper blade at its bottom end, and the scraper blade is made of rubber material.

3. A sewage filtration device for water conservancy projects according to claim 1, characterized in that: The two sets of push plates (57) are connected by a flexible sheet, and the magnetic blocks A (59) and B (510) have the same magnetic properties on opposite sides.

4. A sewage filtration device for water conservancy projects according to claim 1, characterized in that: The auxiliary mechanism includes a sliding rod (61) that slides inside the rotating shaft B (53). The bottom end of the sliding rod (61) is fixed with a base (62). The side wall of the base (62) is fixed with a fixing frame (63). The surface of the fixing frame (63) is embedded with multiple sets of equally spaced nozzles (64). The bottom of the nozzle (64) is connected to the bottom of the base (62) by a connecting pipe (65). The jet end of the nozzle (64) is aligned with the filter hole on the surface of the filter plate (3).

5. A sewage filtration device for water conservancy projects according to claim 4, characterized in that: The outer wall of the sliding rod (61) is fitted with a spring B (66), the top end of the spring B (66) is fixed to the bottom end of the filter plate (3), and the bottom end of the spring B (66) is fixed to the top end of the base (62).

6. A sewage filtration device for water conservancy projects according to claim 4, characterized in that: The side wall of the rotating shaft B (53) is connected to an air intake pipe (67) that passes through the filter tank (1). An exhaust pipe (68) is connected between the rotating shaft B (53) and the base (62). The base (62) has a hollow structure.

7. A sewage filtration device for water conservancy projects according to claim 6, characterized in that: The intake pipe (67) is equipped with a one-way intake valve, and the exhaust pipe (68) is equipped with a one-way exhaust valve.

8. A sewage filtration device for water conservancy projects according to claim 1, characterized in that: The control mechanism includes a turntable (71) that rotates in the inner cavity of the top of the T-shaped cylinder (4). The bottom end of the turntable (71) is fixedly connected to the top end of the rotating shaft A (51). The side wall of the rotating shaft A (51) is provided with an installation groove (72). A centrifugal block (73) slides inside the installation groove (72). An elastic plate (75) is installed in the inner cavity of the top of the T-shaped cylinder (4). A sleeve (76) is installed on the side wall of the T-shaped cylinder (4). A friction block (79) is sleeved on the side wall of the rotating shaft B (53). A push rod (77) that penetrates into the T-shaped cylinder (4) slides inside the sleeve (76). A friction plate (78) is installed at one end of the push rod (77).

9. A sewage filtration device for water conservancy projects according to claim 8, characterized in that: A spring C (74) is installed inside the mounting groove (72). One end of the spring C (74) is fixedly connected to the inner wall of the mounting groove (72), and the other end of the spring C (74) is fixedly connected to one end of the centrifugal block (73). A spring D (710) is provided inside the sleeve (76), and the spring D (710) is sleeved on the outer wall of the push rod (77).

10. A sewage filtration device for water conservancy projects according to claim 1, characterized in that: The filter tank (1) has a drain outlet on its side wall, and a collection box (9) connected to the drain outlet is welded to the side wall of the filter tank (1).

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