A sand removal device for a cyclone grit chamber of a sewage treatment plant

Abstract

The present application provides a kind of sewage treatment plant cyclone grit removal device, it is related to grit removal technical field, including cyclone grit bucket and sand water separation hopper, the cyclone grit bucket includes bucket shell, the inside fixed connection of bucket shell has receiving bottom plate, the middle bottom of receiving bottom plate is fixedly connected with bottom leakage pipeline.The synergistic technology of cyclone stirring flow, integrated filtration direct discharge, single gate flow regulation is used to form directional cyclone quickly after sewage is introduced into separation cavity, the separation of water body and solid particles is accelerated by centrifugal force, and the sand-water liquid-solid separation and liquid discharge process are completed synchronously through the filtering structure, which greatly improves the sand-water sand removal efficiency, and a simple gate flow regulation mode is used to replace the traditional complex pipeline and pump valve control process, which simplifies the overall operation process, avoids the problem of sand particle jamming and pipeline blockage during the operation of sand suction pump from the root source, and completely solves the industry pain points of high maintenance frequency and high operation and maintenance cost caused by frequent failures of sand suction pump.

Description

Technical Field

[0001] This invention relates to the technical field of grit removal in sedimentation tanks, specifically to a grit removal device for a cyclone sedimentation tank in a wastewater treatment plant. Background Technology

[0002] The cyclone grit chamber in a wastewater treatment plant is a core supporting equipment in the pretreatment stage of wastewater treatment. It is mainly used to separate and collect impurities such as sand and solid particles in wastewater, remove inorganic particles with high density in wastewater, reduce wear on subsequent treatment equipment, ensure the stable operation of the wastewater treatment system, and meet the needs of continuous and efficient grit removal operations in wastewater treatment plants, thereby improving the overall efficiency of wastewater treatment and the service life of the system. According to the public announcement (CN114405079B), a lift-type cyclone sand separator is disclosed. This technology discloses that it includes a sedimentation tank and a lift-up device. The sedimentation tank has a sand collection hopper at its lower end, and a hollow shaft extending vertically is placed inside the sedimentation tank. A paddle is fixed to the lower end of the hollow shaft at the upper opening of the sand collection hopper. A drive device is fixed to the upper end of the sedimentation tank and connected to the upper end of the hollow shaft. The lift-up device includes a lift tank, a lift pipe, an air flushing pipe, and a sand discharge pipe. The lift tank is housed within the sand collection hopper and connected to... The technical solutions include connecting the sand collection hopper, the air lift pipe passing through the hollow shaft and connecting to the air lift tank, the air flushing pipe passing through the hollow shaft and connecting to the sand collection hopper, and the sand discharge pipe passing through the hollow shaft and connecting to the air lift tank. These solutions feature paddles that can accelerate the rotation speed of the water flow in the sedimentation tank, allowing the sand to settle better. The settled sand is concentrated in the sand discharge hopper. The air lift pipe drives the water flow through the air tank and into the sand discharge pipe. The air flushing pipe blows the sand in the sand collection hopper, allowing the blown sand to enter the sand discharge pipe with the water flow, resulting in good sand discharge effect. However, in the aforementioned comparative documents, traditional sand-water separation methods mostly rely on sand suction pumps combined with multi-stage separation tanks for step-by-step processing. The core defect stems from inherent deficiencies in structural design and operating mechanism. As the core suction equipment, the sand suction pump is prone to solid sand particles getting stuck in the pump impeller and clogging pipe bends when treating sand-containing wastewater. In addition, fluctuations in sand-water concentration can directly lead to an imbalance in negative pressure in the pump body, resulting in frequent blockages and shutdowns of the sand suction pump. This not only interrupts the sand-water separation process but also requires frequent disassembly, maintenance, and pipe dredging, directly causing a high frequency of equipment maintenance and a surge in maintenance manpower and time costs. Furthermore, the method of directly relying on natural sedimentation after the vortex flow structure to achieve liquid-solid separation results in slow separation speed and extremely low sand removal efficiency.

[0003] Therefore, the present invention provides a sand removal device for a vortex grit chamber in a sewage treatment plant. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a sand removal device for a vortex grit chamber in a sewage treatment plant.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cyclone grit removal device for a wastewater treatment plant, comprising a cyclone grit chamber and a sand-water separation hopper. The cyclone grit chamber includes a shell, a receiving base plate is fixedly connected inside the shell, a bottom drain pipe is fixedly connected to the bottom center of the receiving base plate, a first motor is fixedly connected to the upper end of the shell, a stirring roller is fixedly connected to the output end of the first motor, stirring blades are fixedly connected to the surface of the stirring roller, a feed pipe is fixedly connected to the surface of the shell, a first outlet pipe is fixedly connected to the surface of the shell, and a filtration mechanism is provided at the lower end of the cyclone grit chamber; the filtration mechanism includes a filter barrel located at the lower end of the bottom drain pipe, and the lower end of the filter barrel is connected to the sand-water separation hopper.

[0006] In a preferred embodiment, a conical helical blade is fixedly connected to the surface of the stirring roller, and a first helical blade is fixedly connected to the surface of the stirring roller.

[0007] The technical effect of adopting the above-mentioned further solution is that while the stirring blade rotates and stirs, it drives the conical spiral blade and the first spiral blade to rotate synchronously, providing downward transport pressure for the sand and water. While assisting in accelerating the sand and water to be squeezed and drained through the filter bucket, it avoids slurry blockage at this point and improves the applicability of the device.

[0008] In a preferred embodiment, the sand-water separation bucket includes a bucket shell, a conveying pipe is fixedly connected to the side end of the bucket shell, a sand receiving pipe is fixedly connected to the upper end of the conveying pipe, and the upper surface of the sand receiving pipe is threadedly connected to the filter bucket.

[0009] The technical effect of adopting the above-mentioned further solution is that the filtered sand and water can be introduced into the sand and water separation hopper for further separation through the sand inlet pipe.

[0010] In a preferred embodiment, a second motor is fixedly connected to the surface of the conveying pipe, a second spiral blade is fixedly connected to the output end of the second motor, and a sand unloading pipe is fixedly connected to the lower surface of the conveying pipe.

[0011] The technical effect of adopting the above-mentioned further solution is that the sand and gravel settled at the bottom are transported to the sand discharge pipe for discharge by the second spiral blade.

[0012] In a preferred embodiment, a baffle is fixedly connected to the inside of the bucket shell, and a second water outlet pipe is fixedly connected to the surface of the bucket shell.

[0013] The technical effect of adopting the above-mentioned further solution is that the baffle prevents sand and water from being discharged directly from the second outlet pipe without sedimentation, thereby improving the sand and water separation efficiency.

[0014] In a preferred embodiment, a conical bottom plate is fixedly connected to the bottom of the barrel shell, a receiving ring is rotatably connected to the lower end of the bottom leakage pipe, the lower end of the stirring roller is fixedly connected to the receiving ring, a bottom pipe is rotatably connected to the lower end of the receiving ring, and a third water outlet pipe is fixedly connected to the side end of the barrel shell.

[0015] The technical effect of adopting the above-mentioned further solution is that the conical bottom plate design makes the liquid separated from the filter bucket flow to the edge of the conical bottom plate, which is more conducive to the discharge of small particles precipitated in the liquid.

[0016] In a preferred embodiment, the interior of the vortex sedimentation tank is provided with a cleaning mechanism, which includes a scraper slidably connected to the surface of the conical bottom plate.

[0017] The technical effect of adopting the above-mentioned further solution is that the particles deposited on the surface of the conical base plate are concentrated and discharged by the scraper that scrapes on the conical base plate.

[0018] In a preferred embodiment, a toothed ring is fixedly connected to the surface of the receiving ring, a transmission gear is rotatably connected to the lower end of the receiving base plate, the surface of the toothed ring meshes with the transmission gear, an inner ring is rotatably connected to the lower end of the receiving base plate, the inner wall of the inner ring meshes with the transmission gear, the outer wall of the inner ring is fixedly connected to a scraper, and a funnel is fixedly connected to the lower end of the conical base plate, the lower end of the funnel being connected to a sand receiving pipe.

[0019] The technical effect of adopting the above-mentioned further solution is that when the stirring roller drives the toothed ring to rotate through the receiving ring, it indirectly drives the inner ring to rotate through the transmission gear, so that the scraper scrapes the deposits on the surface of the conical bottom plate into the funnel when the bottom valve is opened and discharged. Moreover, the scraper only rotates once after the stirring roller rotates several times, which reduces the cleaning frequency due to the small amount of deposits and improves the service life of the device.

[0020] This invention provides a grit removal device for a vortex grit chamber in a wastewater treatment plant. It has the following beneficial effects: By employing a synergistic technology of swirling agitation to generate flow, integrated filtration and direct discharge, and single-gate flow control, a directional swirling flow is rapidly formed after the wastewater is introduced into the separation chamber. Centrifugal force is used to accelerate the separation of water and solid particles. Simultaneously, the filtration structure completes the sand-water liquid-solid separation and discharge process, significantly improving the efficiency of sand removal. Furthermore, a simplified gate flow control mode replaces the traditional complex pipeline and pump valve control process, simplifying the overall operation. At the same time, it avoids the problems of sand particle jamming and pipeline blockage during sand suction pump operation from the structural source, completely solving the industry pain points of high maintenance frequency and high operation and maintenance costs caused by frequent sand suction pump failures.

[0021] Relying on the transmission technology of the coaxial linkage downward conveying component of the mixing main shaft, while realizing swirling mixing and separation, it provides continuous downward directional conveying pressure for sand and water. This not only helps to accelerate the sand and water to complete the squeezing and dewatering through the filtration structure, further improving the liquid-solid separation speed, but also eliminates the hidden dangers of slurry accumulation and agglomeration through downward thrust, preventing slurry blockage in the filtration section. This allows the device to be adapted to sand and water treatment scenarios with different concentrations and properties, greatly improving the overall applicability of the equipment.

[0022] Combining a conical guide base, a deceleration meshing transmission, and an automatic scraping and cleaning technology, the conical base guides the separated liquid to the edge, facilitating the collection of fine sediment particles. The deceleration meshing transmission enables the scraping component to operate at low speed, which can accurately scrape away fine particulate impurities deposited on the base surface, ensuring thorough and complete slag removal. The low-speed operation also significantly reduces the accumulation rate of sediment, reducing the frequency of equipment cleaning. This optimizes the durability of the equipment from a structural perspective and effectively extends the overall service life of the device. Attached Figure Description

[0023] Figure 1 A three-dimensional structural schematic diagram of a sand removal device for a cyclone grit chamber in a wastewater treatment plant, provided by the present invention; Figure 2 A schematic diagram of the cyclone grit chamber and related structures of a cyclone grit removal device for a wastewater treatment plant is provided by the present invention. Figure 3 A schematic diagram of the filter barrel and related structures of a sand removal device for a cyclone grit chamber in a wastewater treatment plant, provided by the present invention; Figure 4 The present invention provides a sand removal device for a vortex grit chamber in a wastewater treatment plant. Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 A schematic diagram of a toothed ring and related structures of a vortex grit removal device for a wastewater treatment plant provided by the present invention; Figure 6 A schematic diagram of a sand-water separation hopper and related structures of a cyclone grit chamber removal device for a wastewater treatment plant, provided by the present invention; Figure 7 A schematic diagram of the stirring roller and related structures of a sand removal device for a cyclone grit chamber in a wastewater treatment plant, provided by the present invention; Figure 8 The present invention provides a sand removal device for a vortex grit chamber in a wastewater treatment plant. Figure 7 Enlarged structural diagram at point B.

[0024] Legend: 1. Cyclone sedimentation tank; 101. Tank shell; 102. Supporting bottom plate; 103. Bottom drain pipe; 104. First motor; 105. Agitator roller; 106. Agitator blade; 107. Feed pipe; 108. First water outlet pipe; 2. Sand-water separation hopper; 201. Hopper shell; 202. Conveying pipeline; 203. Sand receiving pipe; 204. Second motor; 205. Second spiral blade; 206. Sand unloading pipeline; 207. Baffle; 208. Second water outlet pipeline; 3. Filtration mechanism; 301. Filter barrel; 302. Conical spiral blades; 303. First spiral blades; 304. Conical base plate; 305. Receiving ring; 306. Bottom pipe; 307. Third outlet pipe; 4. Cleaning mechanism; 401. Scraper; 402. Toothless ring; 403. Transmission gear; 404. Inner ring; 405. Funnel. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1 - Figure 8As shown, this embodiment provides a technical solution: a cyclone grit removal device for a wastewater treatment plant, including a cyclone grit chamber 1 and a sand-water separation hopper 2. The cyclone grit chamber 1 includes a shell 101, and a receiving base plate 102 is fixedly connected inside the shell 101. The receiving base plate 102 is configured as an inverted cone shape. When the grit in the wastewater settles, the grit will slide down the inner wall of the inverted cone and collect downwards when it comes into contact with the inner wall. A bottom drain pipe 103 is fixedly connected to the bottom center of the receiving base plate 102. The grit accumulates here after sliding down the wall, so that the sand-water is discharged through the bottom drain pipe 103. A first motor 104 is fixedly connected to the upper end, and a stirring roller 105 is fixedly connected to the output end of the first motor 104. The first motor 104 drives the stirring roller 105 to rotate. A stirring blade 106 is fixedly connected to the surface of the stirring roller 105. The stirring blade 106 driven by the first motor 104 stirs the sewage in the tank. A feed pipe 107 is fixedly connected to the surface of the tank shell 101, and a first water outlet pipe 108 is fixedly connected to the surface of the tank shell 101. Sewage enters from the feed pipe 107, is initially separated, and is discharged from the first water outlet pipe 108. A filter mechanism 3 is provided at the lower end of the cyclone sedimentation tank 1. The filter mechanism 3 includes a bottom drain. The filter bucket 301 at the lower end of pipe 103 performs secondary treatment. When sand and water pass through, the liquid is squeezed and flows out through the gaps and holes, thereby reducing the liquid content in the sand and water. The lower end of filter bucket 301 is connected to sand-water separation hopper 2. The sand and water after secondary treatment is introduced into sand-water separation hopper 2 for sedimentation treatment. When the wastewater is introduced into the bucket shell 101 through feed pipe 107, the stirring blades 106 create a vortex inside the bucket, thereby accelerating the separation of water particles from water. The liquid in the sand and water is then filtered out through filter bucket 301, improving the sand removal efficiency, and the filtered water is directly introduced into the sand-water separation hopper. In section 2, the sand-water flow rate is adjusted only by a gate, simplifying the operation process and avoiding frequent blockages of the sand suction pump, which leads to high maintenance frequency. Through the synergistic technology of swirling agitation and flow generation, integrated filtration and direct discharge, and single-gate flow control, a directional swirling flow is quickly formed after the sewage is introduced into the separation chamber. Centrifugal force is used to accelerate the separation of water and solid particles. Simultaneously, the sand-water liquid-solid separation and drainage process are completed through the filtration structure, which greatly improves the sand removal efficiency. At the same time, it avoids the problems of sand particle jamming and pipeline blockage during the operation of the sand suction pump from the structural source, and completely solves the industry pain point of high maintenance frequency and high operation and maintenance costs caused by frequent failures of sand suction pumps.

[0027] like Figure 3 , Figure 7 and Figure 8As shown: A conical spiral blade 302 is fixedly connected to the surface of the stirring roller 105, and a first spiral blade 303 is fixedly connected to the surface of the stirring roller 105. The stirring roller 105 simultaneously drives the conical spiral blade 302 and the first spiral blade 303 to rotate. While the stirring blade 106 rotates and stirs, it drives the conical spiral blade 302 and the first spiral blade 303 to rotate synchronously, providing downward conveying pressure for the sand and water. This helps to accelerate the sand and water through the filter bucket 301 to squeeze out water, while preventing slurry blockage at this point, thus improving the applicability of the device. Relying on the transmission technology of the coaxial linkage downward conveying component of the stirring main shaft, while realizing swirling stirring and separation, it provides continuous downward directional conveying pressure for the sand and water. This not only helps to accelerate the sand and water through the filter structure to complete the squeeze dewatering, further improving the liquid-solid separation speed, but also breaks up the hidden dangers of slurry accumulation and agglomeration through downward thrust, eliminating the problem of slurry blockage in the filter section. This allows the device to be adapted to sand and water treatment scenarios with different concentrations and properties, greatly improving the overall applicability of the equipment.

[0028] like Figure 1 and Figure 6 As shown: The sand-water separation hopper 2 includes a hopper shell 201, where sand and gravel settle at the bottom. A conveying pipe 202 is fixedly connected to the side end of the hopper shell 201. The bottom end of the conveying pipe 202 is connected to the bottom of the hopper shell 201. A sand receiving pipe 203 is fixedly connected to the upper end of the conveying pipe 202. A valve is provided on the surface of the sand receiving pipe 203. Sand and water are introduced into the sand-water separation hopper 2 through the sand receiving pipe 203. The upper surface of the sand receiving pipe 203 is threadedly connected to the filter bucket 301. The sand receiving pipe 203 allows the separated and filtered sand and water to be introduced into the sand-water separation hopper 2 for further separation.

[0029] like Figure 6 As shown: A second motor 204 is fixedly connected to the surface of the conveying pipe 202. A second spiral blade 205 is fixedly connected to the output end of the second motor 204. The second spiral blade 205 is driven to rotate by the second motor 204. A sand discharge pipe 206 is fixedly connected to the lower surface of the conveying pipe 202. The sand and gravel settled at the bottom are transported to the sand discharge pipe 206 for discharge by the second spiral blade 205.

[0030] like Figure 6 As shown: A baffle 207 is fixedly connected inside the hopper shell 201. When sand and water are introduced into the hopper shell 201 from the sand receiving pipe 203, they will be blocked by the baffle 207. The baffle 207 is set as an arc-shaped shield to reduce the impact of sand and water, increase the retention time, and improve the sedimentation efficiency. A second water outlet pipe 208 is fixedly connected to the surface of the hopper shell 201. The baffle 207 prevents sand and water from being discharged directly from the second water outlet pipe 208 without sedimentation, thereby improving the sand and water separation efficiency.

[0031] like Figure 2 - Figure 3As shown: A conical bottom plate 304 is fixedly connected to the bottom of the barrel shell 101. The conical bottom plate 304 is an arc-shaped plate with the cone tip pointing upwards. When the slurry flows out of the filter barrel 301, it will flow along the inclined wall of the conical bottom plate 304 to the bottom, where it will settle. The lower end of the bottom drain pipe 103 is rotatably connected to a receiving ring 305. The lower end of the stirring roller 105 is fixedly connected to the receiving ring 305. The lower end of the receiving ring 305 is rotatably connected to a bottom pipe 306. A third water outlet pipe 307 is fixedly connected to the side end of the barrel shell 101. The conical bottom plate 304 is designed so that the liquid separated from the filter barrel 301 will flow to the edge of the conical bottom plate 304, which is more conducive to the discharge of small particles settled in the liquid.

[0032] like Figure 3 As shown: The cyclone sedimentation tank 1 is equipped with a cleaning mechanism 4 inside. The cleaning mechanism 4 includes a scraper 401 that is slidably connected to the surface of the conical bottom plate 304. The surface of the scraper 401 is in contact with the conical bottom plate 304. The particles settled on the surface of the conical bottom plate 304 are concentrated and discharged by the scraper 401 that scrapes on the conical bottom plate 304.

[0033] like Figure 4 - Figure 5 As shown: A toothed ring 402 is fixedly connected to the surface of the receiving ring 305. A transmission gear 403 is rotatably connected to the lower end of the receiving base plate 102. The receiving base plate 102 and the transmission gear 403 are compatible. The surface of the toothed ring 402 meshes with the transmission gear 403. The toothed ring 402 and the transmission gear 403 are compatible. An inner ring 404 is rotatably connected to the lower end of the receiving base plate 102. The receiving base plate 102 and the inner ring 404 are compatible. The inner wall of the inner ring 404 meshes with the transmission gear 403. The outer wall of the inner ring 404 is fixedly connected to the scraper 401. A funnel 405 is fixedly connected to the lower end of the conical base plate 304. The lower end of the funnel 405 is connected to the sand receiving pipe 203. When the stirring roller 105 drives the toothed ring 402 to rotate through the receiving ring 305, it simultaneously... The transmission gear 403 indirectly drives the inner ring 404 to rotate, causing the scraper 401 to scrape the deposits on the surface of the conical bottom plate 304 into the funnel 405 when the bottom valve is opened for discharge. The scraper 401 only rotates once after the stirring roller 105 rotates several times, which reduces the cleaning frequency due to the small amount of deposits and improves the service life of the device. Combined with the combination technology of the positive conical guide base, deceleration meshing transmission, and automatic scraping cleaning, the positive conical base can guide the separated liquid to the edge, which is convenient for the collection of fine sediment particles. The deceleration meshing transmission enables the scraping component to operate at low speed, which can accurately scrape the fine particle impurities deposited on the surface of the base, ensuring thorough slag discharge without dead corners. The low speed operation also greatly reduces the accumulation rate of deposits, reduces the frequency of equipment cleaning, optimizes the durability of the equipment from the structural level, and effectively extends the overall service life of the device.

[0034] Working principle: like Figure 1 - Figure 8 As shown: In use: First, wastewater is poured into the inner cavity of the shell 101 of the cyclone grit chamber 1 through the feed pipe 107. The first motor 104 starts and drives the stirring roller 105 to rotate continuously, synchronously driving the stirring blade 106, the conical spiral blade 302 and the first spiral blade 303 to rotate, quickly forming a directional vortex inside the tank. Relying on the principle of centrifugal force, the separation of solid sand and gravel in the wastewater from the water is accelerated. The separated qualified clear liquid is directly discharged from the tank through the first outlet pipe 108, while the separated sand-water mixture flows along the inverted conical receiving bottom. Plate 102 converges towards the center and flows into the filter bucket 301 of the filtration mechanism 3 through the bottom drain pipe 103. The coaxially rotating conical spiral blades 302 and the first spiral blade 303 continuously provide downward directional conveying pressure for the sand and water, which not only assists the sand and water in quickly completing liquid-solid compression filtration and discharging the separated liquid in the filter bucket 301, but also breaks up the hidden danger of mortar sludge accumulation and avoids blockage. The filtered and separated sand and water is introduced into the inner cavity of the bucket shell 201 of the sand and water separation bucket 2 through the sand receiving pipe 203. The arc-shaped baffle 207 effectively reduces the impact force of the sand and water. Extending the sedimentation time of sand and water prevents direct discharge of unsedimented sand and water. The clear liquid after secondary separation is discharged through the second outlet pipe 208. The sand and gravel that have settled to the bottom of the hopper shell 201 are transported by the second spiral blades 205 in the conveying pipe 202 driven by the second motor 204, and finally discharged through the sand unloading pipe 206. At the same time, the stirring roller 105 drives the receiving ring 305 to rotate synchronously. The toothed ring 402 on the receiving ring 305 drives the inner ring 404 to rotate at low speed through the meshing transmission gear 403, thereby driving the inner ring 404 to rotate at low speed. The scraper 401 of the dynamic cleaning mechanism 4 scrapes against the surface of the conical bottom plate 304, scraping the fine particles deposited on the conical bottom plate 304 into the bottom funnel 405 for centralized discharge, and then guiding them into the sand receiving pipe 203 to enter the sand-water separation hopper 2. The entire process only requires the sand and water flow rate to be controlled by valves. Relying on the synergistic technology of swirling agitation to create flow, integrated filtration and direct discharge, and deceleration meshing scraping, it not only greatly improves the sand and water removal and separation efficiency, but also avoids sand suction pump blockage and sand particle jamming failures from the structural root, reducing the frequency of equipment maintenance and operation and maintenance costs.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grit removal device for a cyclone grit chamber in a wastewater treatment plant, comprising a cyclone grit chamber (1) and a grit-water separation hopper (2), characterized in that: The cyclone sedimentation tank (1) includes a tank shell (101), a receiving base plate (102) is fixedly connected inside the tank shell (101), a bottom drain pipe (103) is fixedly connected to the bottom middle of the receiving base plate (102), a first motor (104) is fixedly connected to the upper end of the tank shell (101), a stirring roller (105) is fixedly connected to the output end of the first motor (104), a stirring blade (106) is fixedly connected to the surface of the stirring roller (105), a feed pipe (107) is fixedly connected to the surface of the tank shell (101), a first water outlet pipe (108) is fixedly connected to the surface of the tank shell (101), and a filter mechanism (3) is provided at the lower end of the cyclone sedimentation tank (1). The filtration mechanism (3) includes a filter bucket (301) located at the lower end of the bottom drain pipe (103).

2. The grit removal device for a cyclone grit chamber in a wastewater treatment plant according to claim 1, characterized in that: A conical spiral blade (302) is fixedly connected to the surface of the stirring roller (105), and a first spiral blade (303) is fixedly connected to the surface of the stirring roller (105).

3. The grit removal device for a cyclone grit chamber in a wastewater treatment plant according to claim 1, characterized in that: The sand-water separation bucket (2) includes a bucket shell (201), a conveying pipe (202) is fixedly connected to the side end of the bucket shell (201), a sand receiving pipe (203) is fixedly connected to the upper end of the conveying pipe (202), and the upper surface of the sand receiving pipe (203) is threadedly connected to the filter bucket (301).

4. The grit removal device for a vortex grit chamber in a wastewater treatment plant according to claim 3, characterized in that: A second motor (204) is fixedly connected to the surface of the conveying pipe (202), a second spiral blade (205) is fixedly connected to the output end of the second motor (204), and a sand unloading pipe (206) is fixedly connected to the lower surface of the conveying pipe (202).

5. The grit removal device for a cyclone grit chamber in a wastewater treatment plant according to claim 3, characterized in that: A baffle (207) is fixedly connected inside the hopper shell (201), and a second water outlet pipe (208) is fixedly connected to the surface of the hopper shell (201).

6. The grit removal device for a cyclone grit chamber in a wastewater treatment plant according to claim 5, characterized in that: A conical bottom plate (304) is fixedly connected to the bottom of the barrel shell (101), a receiving ring (305) is rotatably connected to the lower end of the bottom drain pipe (103), the lower end of the stirring roller (105) is fixedly connected to the receiving ring (305), a bottom pipe (306) is rotatably connected to the lower end of the receiving ring (305), and a third water outlet pipe (307) is fixedly connected to the side end of the barrel shell (101).

7. The grit removal device for a cyclone grit chamber in a wastewater treatment plant according to claim 6, characterized in that: The vortex sedimentation tank (1) is equipped with a cleaning mechanism (4), which includes a scraper (401) that is slidably connected to the surface of the conical bottom plate (304).

8. The grit removal device for a cyclone grit chamber in a wastewater treatment plant according to claim 6, characterized in that: A toothed ring (402) is fixedly connected to the surface of the receiving ring (305). A transmission gear (403) is rotatably connected to the lower end of the receiving base plate (102). The surface of the toothed ring (402) meshes with the transmission gear (403). An inner ring (404) is rotatably connected to the lower end of the receiving base plate (102). The inner wall of the inner ring (404) meshes with the transmission gear (403). The outer wall of the inner ring (404) is fixedly connected to the scraper (401). A funnel (405) is fixedly connected to the lower end of the conical base plate (304). The lower end of the funnel (405) is connected to the sand receiving pipe (203).

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