Environment-friendly sewage treatment device for water conservancy project

Abstract

The invention relates to the technical field of sewage treatment, and discloses an environment-friendly sewage treatment device for hydraulic engineering, which comprises a filter tank, a water inlet pipe is arranged at the upper part of the filter tank, the side edge of the filter tank is connected with a purification tank through a pipeline, and a filter assembly is arranged in the filter tank. An adsorption assembly is arranged in the middle of the filtering box, a removing assembly is arranged on the side edge of the adsorption assembly, a collecting assembly is arranged on the side edge of the filtering box, the filtering assembly comprises an inner ring fixedly connected to the inner wall of the filtering box, and a filtering cylinder is fixedly connected to the middle of the upper surface of the inner ring. The adsorption assembly is driven to operate through impact force of sewage flowing, meanwhile, metal objects in sewage can be selected and adsorbed, rotation is achieved through the impact force, the objects are transferred to the removing assembly, the metal objects are removed under the limiting effect of bevel gears, and finally the metal objects are collected through cooperation with the collecting assembly. And the purpose of centralized recovery treatment of the metal objects is achieved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an environmentally friendly wastewater treatment device for water conservancy projects. Background Technology

[0002] Water conservancy projects are engineering facilities built to regulate surface water and groundwater and to rationally develop and utilize water resources. They are important infrastructures for ensuring social and economic development and ecological security. In water conservancy projects, the filtration and treatment of sewage is an important step and the first step in sewage treatment. Solid-liquid separation equipment is usually used for filtration.

[0003] In the prior art, Chinese patent document CN119977249A discloses an activated sludge wastewater treatment device for water conservancy projects, including a shell; a ladder fixedly connected to the outside of the shell; a ladder fixedly connected to the top of the shell; a motor fixedly connected to the top of the fixed frame; and a rotating shaft rotatably connected to the inside of the fixed frame. This device can accelerate the reaction speed between wastewater and activated sludge, improve work efficiency, pre-treat wastewater, reduce the possibility of pipe blockage, clean the filter plate, ensure filtration effect, and accelerate the reaction speed between chemicals and water.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: sewage inevitably carries a large amount of debris and garbage, so the first step in sewage treatment is usually filtration to remove garbage from the sewage. However, since the garbage in sewage may contain metal, and metal substances have both recycling value and equipment damage risk, if they are mixed with other garbage, it will not only waste recyclable resources, but also, because metal is hard, it is easy to cause wear and jamming of metal parts of equipment such as screens and pumps under the influence of water flow, and even cause mechanical failure, increasing equipment maintenance costs and downtime risks. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that in the process of sewage filtration, the metal in the garbage has both recycling value and equipment damage risk. Mixed treatment is wasteful of resources and easy to cause equipment failure, increasing costs and downtime risk. To this end, we propose an environmentally friendly sewage treatment device for water conservancy projects.

[0006] To achieve the above objectives, this application adopts the following technical solution: an environmentally friendly sewage treatment device for water conservancy projects, including a filter box, an inlet pipe at the top of the filter box, a purification box connected to the side of the filter box via a pipe, a filter assembly inside the filter box, an adsorption assembly in the middle of the filter box, a removal assembly on the side of the adsorption assembly, and a collection assembly on the side of the filter box.

[0007] The filter assembly includes an inner ring fixedly connected to the inner wall of the filter box, and a filter cylinder is fixedly connected to the middle of the upper surface of the inner ring.

[0008] The adsorption assembly includes an active rod that is movably inserted into the middle of the top of the filter box. The outer surface of the active rod is arranged in a ring array with inclined flow wheel plates. A shaft is movably inserted into the bottom side of the inclined flow wheel plates. A rotating cylinder is fixedly sleeved on the outer surface of the shaft. A magnet is embedded in the outer surface of the rotating cylinder.

[0009] Preferably, the filter cartridge adopts a frustum structure with a smaller top and a larger bottom. A collar is fixedly sleeved on the outer surface of the active rod, and a scraper is fixedly connected to the lower surface of the collar. The scraper has an arc-shaped design and fits against the outer surface of the filter cartridge.

[0010] Preferably, the outer surface of the active rod is provided with annular array of extension rods, the inclined flow wheel is fixedly connected to the end of the extension rod away from the active rod, and the outer surface of the shaft is fitted with a torsion spring, the end of the torsion spring away from the shaft is fixedly connected to the side of the inclined flow wheel.

[0011] Preferably, the rejection assembly includes a driven rod that is movably inserted into the top of the filter box. A fan plate is hinged to the outer surface of the driven rod, and a damping spring telescopic rod is hinged to the lower surface of the fan plate. The end of the damping spring telescopic rod away from the fan plate is hinged to the outer surface of the driven rod. The driving rod and the driven rod are connected by a pulley transmission component.

[0012] Preferably, a bevel gear one is fixedly sleeved on the outer surface of the drive rod, and a bevel gear two is fixedly connected to the outer surface of the shaft rod, with the bevel gear two meshing with the bevel gear one.

[0013] Preferably, the collecting assembly includes a turntable fixedly sleeved on the outer surface of the driven rod. The turntable is I-shaped and has a folded groove inside. A support is fixedly connected to the top of the filter box. A slide rod is movably inserted through the outer surface of the support, and the end of the slide rod is movably engaged in the folded groove.

[0014] Preferably, a collection box is provided on the side of the filter box, and a vertical rod is movably inserted into the top of the collection box. A hollow plate is fixedly connected to the top of the vertical rod, and a sliding groove is provided through the side of the hollow plate. The end of the sliding rod away from the turntable is engaged inside the sliding groove.

[0015] Preferably, an activated carbon adsorption plate is provided below the filter assembly, and a sewage discharge assembly is provided on the side of the inner ring.

[0016] Preferably, the sewage discharge assembly includes a spur gear fixedly connected to the bottom end of the driven rod, and a toothed ring is rotatably connected to the inner wall of the filter box, the toothed ring meshing with the spur gear.

[0017] Preferably, a connecting rod is fixedly connected to the lower surface of the toothed ring, and a push plate is fixedly connected to the end of the connecting rod away from the toothed ring. The push plate is configured as a triangular structure, and a discharge pipe is fixedly connected to the side of the filter box.

[0018] The technical effects and advantages of this invention are as follows:

[0019] In this invention, the impact force of the sewage flow is used to drive the adsorption component to operate, while simultaneously selecting and adsorbing metal items in the sewage. The impact force is used to rotate the component and move the items to the rejection component. Under the limiting action of the bevel gear, the metal items are rejected. Finally, in conjunction with the collection component, the purpose of centralized recycling of the metal items is achieved.

[0020] In this invention, a frustum-shaped filter cylinder is used to block garbage while ensuring the filtration effect. With the help of a scraper, the outer surface of the filter cylinder is scraped off during rotation, causing the garbage adhering to the outer surface of the filter cylinder to fall onto the inner ring. In addition, the sewage discharge component is used to guide and push the garbage, allowing it to slide into the discharge pipe, achieving the effect of timely garbage removal and avoiding the reduction of sewage filtration effect caused by garbage retention, thus ensuring high-efficiency sewage filtration. Attached Figure Description

[0021] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the filter box of the present invention;

[0024] Figure 3 This is a schematic cross-sectional view of the filter box structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the adsorption component structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the oblique flow impeller structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the rejection component structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the collection component structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the linkage structure of the sewage discharge component of the present invention;

[0030] Figure 9 This is a schematic diagram of the sewage discharge component structure of the present invention.

[0031] Legend: 1. Filter box; 2. Inlet pipe; 3. Purification box; 4. Filter assembly; 41. Inner ring; 42. Filter cylinder; 43. Collar ring; 44. Scraper; 5. Activated carbon adsorption plate; 6. Adsorption assembly; 61. Driving rod; 62. Extension rod; 63. Inclined flow wheel; 64. Shaft; 65. Rotary drum; 66. Magnet; 67. Torsion spring; 7. Removal assembly; 71. Driven rod; 72. Fan plate; 73. Damping spring telescopic rod; 74. Bevel gear one; 75. Bevel gear two; 76. Pulley drive component; 8. Collection assembly; 81. Turntable; 82. Folded groove; 83. Support; 84. Slide rod; 85. Vertical pole; 86. Hollow plate; 87. Slide groove; 88. Collection box; 9. Sewage discharge assembly; 91. Gear ring; 92. Spur gear; 93. Connecting rod; 94. Push plate; 95. Discharge pipe. Detailed Implementation

[0032] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0033] Reference Figures 1 to 9 As shown, the present invention provides a technical solution: an environmentally friendly sewage treatment device for water conservancy projects, including a filter box 1, an inlet pipe 2 provided at the top of the filter box 1, a purification box 3 connected to the side of the filter box 1 by a pipe, a filter assembly 4 provided inside the filter box 1, an adsorption assembly 6 provided in the middle of the filter box 1, a removal assembly 7 provided on the side of the adsorption assembly 6, and a collection assembly 8 provided on the side of the filter box 1.

[0034] An activated carbon adsorption plate 5 is provided below the filter assembly 4, and a sewage discharge assembly 9 is provided on the side of the inner ring 41.

[0035] After collection, the wastewater is discharged into the treatment equipment. It first passes through the filter box 1 to filter solid waste. The filter component 4 has the advantage of good anti-clogging performance. After filtration, it passes through the activated carbon adsorption plate 5 and then enters the purification box. After a series of disinfection and purification steps, it is discharged after meeting the discharge standards. The adsorption component 6 can select and adsorb metal items in the wastewater. With the cooperation of the removal component 7 and the collection component 8, the metal items can be collected in a centralized manner.

[0036] Reference Figure 2 , Figure 3 , Figure 8 and Figure 9 As shown, the filter assembly 4 includes an inner ring 41 fixedly connected to the inner wall of the filter box 1. A filter cylinder 42 is fixedly connected to the middle of the upper surface of the inner ring 41. The filter cylinder 42 adopts a frustum structure with a smaller upper part and a larger lower part. A collar 43 is fixedly sleeved on the outer surface of the active rod 61. A scraper 44 is fixedly connected to the lower surface of the collar 43. The scraper 44 has an arc-shaped design and fits against the outer surface of the filter cylinder 42.

[0037] Wastewater enters the inner ring 41, and garbage is blocked by the filter cylinder 42. The bottom surface of the connection between the discharge pipe 95 and the filter box 1 is one-third below the push plate 94. Wastewater flows into the lower part of the filter box 1 through the holes of the filter cylinder 42. While blocking garbage, the filtration effect of the filter cylinder 42 is ensured. Compared with traditional flat plate filters, the possibility of clogging is greatly reduced. During the rotation of the active rod 61, the collar 43 and scraper 44 will rotate. The scraper 44 is attached to the outer surface of the filter cylinder 42, and during the rotation, it will scrape off the outer surface of the filter cylinder 42, so that the garbage attached to the outer surface of the filter cylinder 42 falls onto the inner ring 41.

[0038] Reference Figures 2 to 6 As shown, the adsorption assembly 6 includes an active rod 61 that is movably inserted into the middle of the top of the filter box 1. The outer surface of the active rod 61 is arranged in a ring array with inclined flow wheel plates 63. The bottom side of the inclined flow wheel plates 63 is movably inserted with a shaft 64. The outer surface of the shaft 64 is fixedly sleeved with a rotating cylinder 65. The outer surface of the rotating cylinder 65 is embedded with a magnet 66. The outer surface of the active rod 61 is arranged in a ring array with extension rods 62. The inclined flow wheel plates 63 are fixedly connected to the end of the extension rods 62 away from the active rod 61. The outer surface of the shaft 64 is sleeved with a torsion spring 67. The end of the torsion spring 67 away from the shaft 64 is fixedly connected to the side of the inclined flow wheel plates 63.

[0039] The rejection assembly 7 includes a driven rod 71 that is movably inserted into the top of the filter box 1. A fan plate 72 is hinged to the outer surface of the driven rod 71. A damping spring telescopic rod 73 is hinged to the lower surface of the fan plate 72. The end of the damping spring telescopic rod 73 away from the fan plate 72 is hinged to the outer surface of the driven rod 71. The driving rod 61 and the driven rod 71 are connected by a pulley transmission component 76. A bevel gear 74 is fixedly sleeved on the outer surface of the driving rod 61. A bevel gear 75 is fixedly connected to the outer surface of the shaft 64. The bevel gear 75 meshes with the bevel gear 74.

[0040] After the wastewater enters the filter box 1 through the inlet pipe 2, it directly impacts the outer surface of the inclined flow impeller 63 at a certain flow rate. The inclined flow impeller 63 adopts an arc-shaped curved surface design, and its streamlined contour can efficiently convert the impact force of the water flow into mechanical kinetic energy, driving the inclined flow impeller 63 to rotate around the axis of the drive rod 61. Solid waste carried in the wastewater, after impacting the inclined flow impeller 63, is guided by the curved surface and naturally slides down along the outer surface of the inclined flow impeller 63, entering the subsequent waste collection channel. Meanwhile, the metallic impurities mixed in are attracted by the magnets 66 embedded on the outer surface of the synchronously rotating drum 65, achieving the initial separation of metallic and non-metallic waste. At the same time, the rotational power of the drive rod 61 is transmitted through the belt The transmission component 76 transmits power to the driven rod 71, keeping the driven rod 71 rotating synchronously with the driving rod 61. When the inclined flow wheel 63 rotates with the driving rod 61 to a specific position close to the driven rod 71, the second bevel gear 75 at the end of the shaft 64 precisely meshes with the first bevel gear 74 fixed on the driven rod 71. Through gear transmission, the shaft 64 drives the rotating drum 65 to generate additional rotational motion. The rotation of the rotating drum 65 causes the magnet 66 that adsorbs metal to gradually move to the other side of the inclined flow wheel 63. At this time, the edge of the inclined flow wheel 63 forms relative motion with the surface of the rotating drum 65, forcibly removing the metal impurities adsorbed by the magnet 66, thus completing the fully automated mechanical process of metal separation.

[0041] Reference Figure 2 , Figure 3 and Figure 7 As shown, the collection assembly 8 includes a turntable 81 fixedly sleeved on the outer surface of the driven rod 71. The turntable 81 is I-shaped, and a folded groove 82 is opened inside the turntable 81. A support 83 is fixedly connected to the top of the filter box 1. A slide rod 84 is movably inserted through the outer surface of the support 83. The end of the slide rod 84 is movably engaged in the folded groove 82. A collection box 88 is provided on the side of the filter box 1. A vertical rod 85 is movably inserted through the top of the collection box 88. A hollow plate 86 is fixedly connected to the top of the vertical rod 85. A sliding groove 87 is opened through the side of the hollow plate 86. The end of the slide rod 84 away from the turntable 81 is engaged in the interior of the sliding groove 87.

[0042] During rotation, the driven rod 71 synchronously drives the turntable 81, which is fixed to its outer surface, to rotate coaxially. The turntable 81 has a pre-set folded guide groove inside, and the slide rod 84, fitted within the groove, can slide along the groove's trajectory. The other end of the slide rod 84 passes through a linear limiting hole in the support 83, forming a constraint guide structure. As the turntable 81 continues to rotate, the curved contour of the folded groove 82 forces the slide rod 84 to perform periodic linear reciprocating motion within the support 83. The end of the slide rod 84 is engaged with an inclined groove 87 on the outer surface of the hollow plate 86 via a flange. The inclined design of the groove 87 allows the slide rod 84 to move towards the hollow plate 86. At this time, its end slides obliquely in the inclined chute 87, and the hollow plate 86 and the connected upright 85 are driven to slide downward in the vertical direction by the thrust of the chute wall. During the downward movement of the upright 85, pressure is applied to the fan plate 72, forcing the fan plate 72 to flip downward around the axis. At the same time, the damping spring telescopic rod 73 at its bottom is compressed to buffer the impact force. After the fan plate 72 flips, the metal impurities placed on its surface are separated from the fan plate 72 under the action of the component of gravity and slide down the inclined surface into the collection box 88 below, completing the automated centralized recycling of metal impurities. The whole process realizes the power closed loop through pure mechanical transmission.

[0043] Reference Figure 2 , Figure 3 , Figure 8 and Figure 9 As shown, the sewage discharge assembly 9 includes a spur gear 92 fixedly connected to the bottom of the driven rod 71, a gear ring 91 rotatably connected to the inner wall of the filter box 1, the gear ring 91 meshing with the spur gear 92, a connecting rod 93 fixedly connected to the lower surface of the gear ring 91, a push plate 94 fixedly connected to the end of the connecting rod 93 away from the gear ring 91, the push plate 94 being configured as a triangular structure, and a discharge pipe 95 fixedly connected to the side of the filter box 1.

[0044] As the driven rod 71 rotates, it drives the spur gear 92 at its bottom to rotate, which in turn drives the sliding gear ring 91 embedded in the inner wall of the filter box 1 to rotate. The gear ring 91 is connected to the push plate 94 through the connecting rod 93. Therefore, as the gear ring 91 rotates, it drives the push plate 94 to move on the upper surface of the inner ring 41. With the triangular design of the push plate 94, the garbage can be gathered and guided, so that the garbage slides into the discharge pipe 95, achieving the effect of timely cleaning of garbage and avoiding the reduction of sewage filtration effect caused by garbage retention, thus ensuring high-efficiency sewage filtration.

[0045] Working principle: In the process of treating sewage in water conservancy projects, sewage is collected and discharged into the treatment equipment. It first passes through the filter box 1 to filter solid waste, and then enters the purification box after being adsorbed by the activated carbon adsorption plate 5. After a series of disinfection and purification steps, it is discharged after meeting the discharge standards. The specific steps of sewage treatment and the designed equipment are existing technologies well known to those skilled in the art, and will not be elaborated on here.

[0046] Wastewater is transported to the filter box 1 through the inlet pipe 2. The filter box 1 has an active rod 61 and a series of inclined flow impellers 63 arranged in an array around the active rod 61 in the middle. The center of the inclined flow impellers 63 is located directly below the inlet pipe 2. After the wastewater enters the filter box 1 through the inlet pipe 2, it directly impacts the outer surface of the inclined flow impellers 63. Due to the arc-shaped design of the inclined flow impellers 63, the impact force of the water flow can drive the inclined flow impellers 63 to move, which in turn drives the active rod 61 to rotate. A shaft 64 and a rotating cylinder 65 are movably inserted at the bottom end of the inclined flow impellers 63. Debris in the wastewater slides off the outer surface of the inclined flow impellers 63 after impacting them. The metal in the waste is attracted by the magnets 66 embedded in the outer surface of the rotating drum 65, thus effectively picking out metal from the waste. The power of the rotating drive rod 61, after being transmitted through the pulley drive 76, drives the driven rod 71 to rotate. As the inclined flow wheel 63 rotates around the drive rod 61, it approaches the driven rod 71, and the bevel gear 75 at the end of the shaft 64 meshes with the bevel gear 74, driving the shaft 64 to rotate the rotating drum 65. During the rotation of the rotating drum 65, the magnets 66 gradually move to the other side of the inclined flow wheel 63. During the rotation of the rotating drum 65, the shaft 64 compresses the torsion spring 67, and the metal on the outer surface of the magnets 66 is attracted by the inclined flow wheel. The piece 63 is removed and falls onto the upper surface of the fan plate 72, achieving the effect of removing metal. After the rotating drum 65 passes the driven rod 71, the torsion spring 67 rebounds and drives the rotating drum 65 to reset. The fan plate 72 is supported by the damping spring telescopic rod 73. The metal in the sewage is mostly small metal, and the gravity is insufficient to compress the damping spring telescopic rod 73 to retract, ensuring the stability of the fan plate 72. During the rotation of the driven rod 71, it will drive the turntable 81 on its outer surface to rotate. The turntable 81 has a folded groove 82 inside, and a sliding rod 84 slides in the folded groove 82. Therefore, the rotation of the turntable 81 will cause the turntable to rotate. The movable slide bar 84 reciprocates linearly inside the support 83. The other end of the slide bar 84 is engaged in the groove 87 on the outer surface of the hollow plate 86. The groove 87 is inclined. When the slide bar 84 moves toward the hollow plate 86, it slides inside the groove 87 and pushes the hollow plate 86 and the upright 85 downward. The downward movement of the upright 85 pushes the fan plate 72, forcing the fan plate 72 to flip downward and compress the damping spring telescopic rod 73. After the fan plate 72 flips and tilts, the metal will slide into the collection box 88 under its own gravity, which achieves the purpose of centralized recycling of metal. From selection to rejection to collection, a complete recycling path is formed.

[0047] An inner ring 41 and a filter cylinder 42 are arranged in the middle of the filter box 1. The filter cylinder 42 adopts a frustum structure design with a smaller top and a larger bottom, and is fixedly installed on the upper surface of the inner ring 41. Sewage enters the inner ring 41, and garbage is blocked by the filter cylinder 42. At the connection between the discharge pipe 95 and the filter box 1, the bottom surface is one-third below the push plate 94. Sewage flows into the lower part of the filter box 1 from the holes of the filter cylinder 42. While blocking garbage, the filtration effect of the filter cylinder 42 is ensured. Compared with traditional flat plate filters, the possibility of clogging is greatly reduced. During the rotation of the active rod 61, the collar 43 and scraper 44 will rotate. The scraper 44 is in contact with the outer surface of the filter cylinder 42, and during the rotation, it will scrape the outer surface of the filter cylinder 42, so that it is in contact with the filter cylinder 42. The debris on the outer surface of the filter cartridge 42 falls onto the inner ring 41. As the driven rod 71 rotates, it drives the spur gear 92 at its bottom to rotate, which in turn drives the sliding gear ring 91 embedded in the inner wall of the filter box 1 to rotate. The gear ring 91 is connected to the push plate 94 through the connecting rod 93. Therefore, as the gear ring 91 rotates, it drives the push plate 94 to move on the upper surface of the inner ring 41. With the triangular design of the push plate 94, the debris can be gathered and guided, allowing the debris to slide into the discharge pipe 95. The lower bottom surface of the connection between the discharge pipe 95 and the filter box 1 is one-third of the way down from the push plate 94. This ensures that the debris is pushed while reducing the amount of sewage entering, achieving the effect of timely cleaning of the debris and avoiding the situation where the sewage filtration effect is reduced due to the accumulation of debris, thus ensuring high-efficiency filtration of sewage.

[0048] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An environmentally friendly wastewater treatment device for water conservancy projects, characterized in that, include: A filter box (1) is provided with an inlet pipe (2) at the top of the filter box (1), a purification box (3) is connected to the side of the filter box (1) through a pipe, a filter assembly (4) is provided inside the filter box (1), an adsorption assembly (6) is provided in the middle of the filter box (1), a removal assembly (7) is provided on the side of the adsorption assembly (6), and a collection assembly (8) is provided on the side of the filter box (1). The filter assembly (4) includes an inner ring (41) fixedly connected to the inner wall of the filter box (1), and a filter cylinder (42) is fixedly connected to the middle of the upper surface of the inner ring (41). The adsorption component (6) includes an active rod (61) that is movably inserted into the middle of the top of the filter box (1). The outer surface of the active rod (61) is arranged in a ring array with inclined flow wheel plates (63). The bottom side of the inclined flow wheel plates (63) is movably inserted with a shaft (64). The outer surface of the shaft (64) is fixedly fitted with a rotating cylinder (65). The outer surface of the rotating cylinder (65) is embedded with a magnet (66).

2. The environmentally friendly sewage treatment device for water conservancy projects according to claim 1, characterized in that: The filter cylinder (42) adopts a frustum structure with a smaller top and a larger bottom. A collar (43) is fixedly sleeved on the outer surface of the active rod (61). A scraper (44) is fixedly connected to the lower surface of the collar (43). The scraper (44) has an arc-shaped design and fits on the outer surface of the filter cylinder (42).

3. The environmentally friendly sewage treatment device for water conservancy projects according to claim 1, characterized in that: The outer surface of the active rod (61) is arranged in a ring array with extension rods (62). The inclined flow wheel (63) is fixedly connected to the end of the extension rod (62) away from the active rod (61). The outer surface of the shaft (64) is fitted with a torsion spring (67). The end of the torsion spring (67) away from the shaft (64) is fixedly connected to the side of the inclined flow wheel (63).

4. The environmentally friendly sewage treatment device for water conservancy projects according to claim 1, characterized in that: The rejection assembly (7) includes a driven rod (71) that is movably inserted into the top of the filter box (1). A fan plate (72) is hinged to the outer surface of the driven rod (71). A damping spring telescopic rod (73) is hinged to the lower surface of the fan plate (72). One end of the damping spring telescopic rod (73) away from the fan plate (72) is hinged to the outer surface of the driven rod (71). The driving rod (61) and the driven rod (71) are connected by a pulley transmission component (76).

5. The environmentally friendly sewage treatment device for water conservancy projects according to claim 4, characterized in that: The outer surface of the active rod (61) is fixedly fitted with a bevel gear one (74), and the outer surface of the shaft (64) is fixedly connected with a bevel gear two (75), which meshes with the bevel gear one (74).

6. The environmentally friendly sewage treatment device for water conservancy projects according to claim 4, characterized in that: The collection assembly (8) includes a turntable (81) fixedly sleeved on the outer surface of the driven rod (71). The turntable (81) is configured as an I-shaped plate. A folded groove (82) is opened inside the turntable (81). A support (83) is fixedly connected to the top of the filter box (1). A slide rod (84) is movably inserted through the outer surface of the support (83). The end of the slide rod (84) is movably engaged in the folded groove (82).

7. The environmentally friendly sewage treatment device for water conservancy projects according to claim 6, characterized in that: The filter box (1) is provided with a collection box (88) on its side. A vertical rod (85) is movably inserted into the top of the collection box (88). A hollow plate (86) is fixedly connected to the top of the vertical rod (85). A sliding groove (87) is provided through the side of the hollow plate (86). The end of the sliding rod (84) away from the turntable (81) is engaged in the interior of the sliding groove (87).

8. The environmentally friendly sewage treatment device for water conservancy projects according to claim 1, characterized in that: An activated carbon adsorption plate (5) is provided below the filter assembly (4), and a sewage discharge assembly (9) is provided on the side of the inner ring (41).

9. The environmentally friendly sewage treatment device for water conservancy projects according to claim 8, characterized in that: The sewage discharge assembly (9) includes a spur gear (92) fixedly connected to the bottom end of the driven rod (71), and a toothed ring (91) is rotatably connected to the inner wall of the filter box (1), and the toothed ring (91) meshes with the spur gear (92).

10. The environmentally friendly sewage treatment device for water conservancy projects according to claim 9, characterized in that: A connecting rod (93) is fixedly connected to the lower surface of the toothed ring (91). A push plate (94) is fixedly connected to the end of the connecting rod (93) away from the toothed ring (91). The push plate (94) is configured as a triangular structure. A discharge pipe (95) is fixedly connected to the side of the filter box (1).

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