Distributed sewage treatment and recycling device and treatment method thereof

Abstract

The invention provides a decentralized sewage treatment and reuse device and a treatment method thereof.The decentralized sewage treatment and reuse device comprises a treatment pond, the treatment pond is internally provided with a first filter cavity, an overflow cavity and a second filter cavity, the decentralized sewage treatment and reuse device further comprises a second filter part, a pump suction assembly and a drainage assembly, the second filter part is arranged in the second filter cavity and comprises two fan-shaped filter bodies and an overturning body, and the overturning body is arranged in the second filter cavity; and the overturning body is arranged in the second filtering cavity. In the whole filtering process, in the second-stage filtering process, the two fan-shaped filtering bodies can be replaced for use, and in the process that one fan-shaped filtering body is located in water for filtering, water subjected to second-stage filtering is drained into the other fan-shaped filtering body outside the water, so that the filtering effect is greatly improved. The other fan-shaped filter body outside water is subjected to backwashing treatment, shutdown cleaning is not needed, and the two fan-shaped filter bodies capable of being automatically cleaned are replaced for use, so that the duration of secondary filtration is prolonged, and the filtration process is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment, and in particular relates to a decentralized wastewater treatment and reuse device and its treatment method. Background Technology

[0002] Decentralized wastewater treatment equipment refers to small-scale, modular wastewater treatment systems, typically used in areas where access to centralized wastewater treatment networks is not possible. These systems are capable of independent operation, treating wastewater on-site in specific areas or locations, and serve as an important supplement to centralized wastewater treatment systems.

[0003] Decentralized wastewater treatment equipment typically first filters large impurities in the wastewater through a filter screen, then performs sedimentation treatment, and finally performs secondary filtration. In the secondary filtration, static filter media is usually used. However, during the secondary filtration process, small particles of impurities can easily clog the static filter media, requiring frequent shutdowns for cleaning or replacement, which affects the filtration process. Summary of the Invention

[0004] In view of this, the present invention aims to propose a decentralized wastewater treatment and reuse device and its treatment method to solve the technical problem that decentralized wastewater treatment equipment usually filters large impurities in wastewater through a filter screen first, then performs sedimentation treatment, and then performs secondary filtration. In the secondary filtration, a static filter body is usually used for filtration. However, during the secondary filtration process, small particles of impurities easily clog the static filter body, requiring frequent shutdowns for cleaning, which affects the filtration process.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows: In a first aspect, a decentralized wastewater treatment and reuse device is proposed, comprising a treatment tank having a first filtration chamber, an overflow chamber, and a second filtration chamber, and further comprising a second filter element, a pump suction assembly, and a diversion assembly. The second filter element is disposed within the second filtration chamber and includes two fan-shaped filter bodies and a tilting body. The tilting body is disposed inside the second filtration chamber. The two fan-shaped filter bodies are respectively installed at the top and bottom of the tilting body, with the lower fan-shaped filter body located in the water and the upper half-fan-shaped filter body located above the water. The pump suction assembly is located at the first end of the tilting body and pumps out the water filtered by the lower fan-shaped filter body. The diversion assembly is located at the second end of the tilting body and is used to divert the pumped water through the upper fan-shaped filter body, forming a countercurrent cleaning of the fan-shaped filter body.

[0006] Furthermore, the fan-shaped filter body includes a fan-shaped mounting shell. A first arc-shaped mounting opening is formed on the outer arc-shaped surface at the top of the fan-shaped mounting shell, and a second arc-shaped mounting opening is formed on the inner arc-shaped surface of the fan-shaped mounting shell. A first arc-shaped filter screen is fixedly connected to the first arc-shaped mounting opening, and a second arc-shaped filter screen is fixedly connected to the second arc-shaped mounting opening. The first arc-shaped filter screen, the second arc-shaped filter screen, and the fan-shaped mounting shell together form a filling cavity, which is filled with activated carbon. An arc-shaped drainage cavity is formed at the inner arc-shaped surface of the fan-shaped mounting shell, and the arc-shaped drainage cavity communicates with the second arc-shaped mounting opening.

[0007] Furthermore, the flipping body includes a cylindrical shell, with arc-shaped drainage ports at both the top and bottom of the cylindrical shell. A partition plate is fixedly connected inside the cylindrical shell, and two first openings are opened at both ends of the cylindrical shell. The two first openings communicate with the space above and below the partition plate, respectively. Connecting plates are fixedly connected to both sides of the cylindrical shell, and two fan-shaped filter bodies are respectively disposed at the top and bottom of the connecting plates. The two arc-shaped drainage cavities are respectively connected to the two arc-shaped drainage ports.

[0008] Furthermore, both ends of the cylindrical shell are fixedly connected to plug shafts, and slide blocks are inserted into the surfaces of the two plug shafts. The inner walls of the second filter chamber are provided with docking grooves on both sides, and the two slide blocks are slidably connected in the two docking grooves respectively.

[0009] Furthermore, the pump suction assembly includes a first cover, which is slidably sleeved on the surface of one of the plug-in shafts. The end face of the first cover has a first mating cavity, which is sleeved on one end of the cylindrical shell. A first pair of interfaces is provided in the first mating cavity. The first pair of interfaces is connected to a first through-hole at the lower end of the cylindrical shell. A first pump suction pipe is fixedly connected to the outer port of the first pair of interfaces. A second pump suction pipe is connected to the flange at the end of the first pump suction pipe away from the first pair of interfaces. A water pump is fixedly connected to the bottom end of the second pump suction pipe.

[0010] Furthermore, the drainage assembly includes a second cover, which is slidably sleeved on the surface of one of the plug shafts. The end face of the second cover has a second mating cavity, which is sleeved on the end of the cylindrical shell away from the first cover. A second pair of interfaces is provided in the second mating cavity. The second pair of interfaces is connected to a first through-hole at the upper part of the end of the cylindrical shell. A first return pipe is fixedly connected to the outer port of the second pair of interfaces. A diversion pipe is connected to the end of the first return pipe away from the second pair of interfaces. The diversion pipe includes a first pipe and a second pipe. The first pipe is connected to the flange of the first return pipe. The second pipe is fixedly connected to the drain port of the water pump. The first pipe and the second pipe are fixedly connected. A first solenoid valve and a second solenoid valve are fixedly connected to the surface of the first pipe. The first solenoid valve and the second solenoid valve are located above and below the connection point of the first pipe and the second pipe, respectively.

[0011] Furthermore, each of the two slides has a clearance opening at its top, and a sleeve is rotatably connected within the clearance opening. A follower gear is fixedly connected to the surface of the sleeve. Both ends of the sleeve penetrate the slide and extend to the outside of the slide. Motors are fixedly installed on both sides of the treatment pool. The output end of the motor penetrates the treatment pool and extends into the docking groove. A drive gear is fixedly connected to the output end of the motor. The drive gear meshes with the bottom end of the follower gear. An insertion groove is formed on the surface of the insertion shaft. A docking slider is slidably arranged in the insertion groove. The docking slider is fixedly connected to the inner wall of the sleeve. A threaded surface is formed on the surface of the insertion shaft. A fastening nut is threaded onto the threaded surface. An insertion interface is formed on the end face of each of the two slides. A pressure-regulating column is inserted into the insertion interface. The two pressure-regulating columns are fixedly connected to the surfaces of the first cover and the second cover, respectively.

[0012] Furthermore, the top and bottom of the connecting plate are provided with connecting rails, and plug-in seats are slidably arranged in the connecting rails. The two fan-shaped mounting shells are distributed on the top and bottom of the connecting plate and are fixedly connected to the plug-in seats in the connecting rails respectively. The two ends of the fan-shaped mounting shells are respectively attached to the first cover and the second cover. Arc-shaped docking plates are fixedly connected to both ends of the fan-shaped mounting shells. The end faces of the first cover and the second cover are provided with annular grooves, and the annular grooves dock with the surface of the arc-shaped docking plates.

[0013] Furthermore, a clearance groove is provided on the end face of the connector, and the fastening nut is located in the clearance groove.

[0014] Secondly, a decentralized wastewater treatment method is proposed, including the following steps: Step 1, Water Injection: Sewage is injected into the first filter chamber. The sewage will be filtered through the first filter element in the first filter chamber to achieve primary filtration. The water filtered by the first filter element enters the second filter chamber from the top of the overflow chamber after being guided through the overflow chamber. The fan-shaped filter body performs secondary filtration. The pump suction assembly sucks out the water filtered by the fan-shaped filter body located below, thereby sucking out the water after two stages of filtration and completing the sewage treatment. Step 2: Adjust the position of the fan-shaped filter element: Rotate the flip body to exchange the positions of the fan-shaped filter elements at the top and bottom. Use the pump suction component to draw out the water filtered by the lower fan-shaped filter element. During the process of drawing out the water after two stages of filtration, the water drawn out by the pump is guided into the upper fan-shaped filter element by the diversion component, forming a countercurrent cleaning of the fan-shaped filter element. After cleaning, cancel the diversion component. Step 3: Readjust the position of the fan-shaped filter element: Rotate the flip body to exchange the positions of the fan-shaped filter elements at the top and bottom. Adjust the backwashed fan-shaped filter element into the water. This allows one fan-shaped filter element to automatically clean the other during the filtration process, and after cleaning, adjust the cleaned fan-shaped filter element into the water.

[0015] Compared with existing technologies, the decentralized wastewater treatment and reuse device and its treatment method described in this invention have the following advantages: (1) In the entire filtration process described in this invention, during the secondary filtration process, two fan-shaped filter bodies can be replaced and used. While one of the fan-shaped filter bodies is in the water for filtration, the water after secondary filtration is diverted to the other fan-shaped filter body outside the water for backwashing. No need to stop the machine for cleaning. Furthermore, by replacing the two fan-shaped filter bodies that can be automatically cleaned, it is beneficial to extend the duration of secondary filtration and ensure the filtration process.

[0016] (2) When one of the fan-shaped filter bodies has a problem and needs maintenance, the slide can be removed from the docking groove, and then the fastening nut can be rotated off the threaded surface to remove the limit. Then the slide can be removed from the plug shaft to remove the limit on the pressure column. The first cover and the second cover can be removed from the two plug shafts to maintain the fan-shaped filter body separately. This realizes the detachability of the fan-shaped filter body and makes it convenient for staff to perform maintenance.

[0017] When one of the sector filters needs maintenance, the slide can be removed from the docking groove, and the fastening nut can be rotated off the threaded surface to remove the limit. Then, the slide can be removed from the plug shaft to remove the limit on the pressure column. The first and second covers can be removed from the two plug shafts. Then, the sector filter that needs maintenance can be pulled to disengage the plug on the sector mounting shell from the connecting rail. The sector filter that needs maintenance can be replaced as needed without replacing the whole filter, thus reducing maintenance costs. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a flowchart of a decentralized wastewater treatment method according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 4 for Figure 3 Enlarged view of section A in the middle; Figure 5 This is a first exploded view of the tilting body, diversion assembly, and pump suction assembly of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 6 This is a second exploded view of the tilting body, diversion assembly, and pump suction assembly of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the plug shaft and fastening nut of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the first structure of the slide of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the second structure of the slide of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the limiting plate of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 11 This is a cross-sectional view of the treatment tank of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 12This is a schematic diagram of the structure of a fan-shaped filter element in a decentralized wastewater treatment and reuse device according to an embodiment of the present invention; Figure 13 This is a cross-sectional view of the fan-shaped filter element of a decentralized wastewater treatment and reuse device according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1-Treatment tank; 101-First filtration chamber; 102-Overflow chamber; 103-Second filtration chamber; 2-First filter element; 3-Fan-shaped filter body; 301-Fan-shaped mounting shell; 302-First arc-shaped mounting port; 303-Second arc-shaped mounting port; 304-First arc-shaped filter screen; 305-Second arc-shaped filter screen; 306-Arc-shaped drainage chamber; 4-Flipping body; 401-Cylindrical shell; 402-Divider plate; 403-First through-hole; 404-Connecting plate; 405-Arc-shaped drainage port; 5-Plug-in shaft; 6-Slide seat; 7-Mating groove; 8-First cover; 9-First mating chamber; 10-First mating interface; 11-First pump suction pipe; 12-Second pump suction pipe; 13-Water pump; 14-Second cover ; 15-Second docking cavity; 16-Second docking interface; 17-First return pipe; 18-Diverter pipe; 1801-First pipe; 1802-Second pipe; 19-First solenoid valve; 20-Second solenoid valve; 21-Leaning port; 22-Sleeve pipe; 23-Follower gear; 24-Motor; 25-Drive gear; 26-Threaded surface; 27-Fastening nut; 28-Plug groove; 29-Dating slider; 30-Plug interface; 31-Pressure column; 32-Plug seat; 33-Connecting rail; 34-Leaning groove; 35-Lifting bracket; 36-Limiting plate; 37-Overlap groove; 38-Water injection pipe; 39-First partition; 40-Second partition; 41-Drainage pipe; 42-Arc-shaped docking plate; 43-Annular groove. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 13 As shown, in one embodiment, a decentralized wastewater treatment and reuse device includes a treatment tank 1. The treatment tank 1 has a first filtration chamber 101, an overflow chamber 102, and a second filtration chamber 103. A first filter element 2 is disposed in the first filtration chamber 101. The device also includes a second filter element, a pump suction assembly, and a diversion assembly. The second filter element is disposed in the second filtration chamber 103 and includes two fan-shaped filter bodies 3 and a tilting body 4. The tilting body 4 is disposed inside the second filtration chamber 103, and the two fan-shaped filter bodies 3 are respectively installed at the top and bottom of the tilting body 4. The lower fan-shaped filter body 3 is located in the water, and the upper half-fan-shaped filter body 3 is located above the water. The pump suction assembly is located at one end of the inverting body 4. The pump suction assembly pumps out the water filtered by the lower fan-shaped filter body 3. The diversion assembly is located at the other end of the inverting body 4. The diversion assembly is used to divert the water pumped out through the upper fan-shaped filter body 3 to form a countercurrent cleaning of the fan-shaped filter body 3. Specifically, the bottom end of the overflow chamber 102 is connected to the first filter chamber 101, and the top end of the overflow chamber 102 is connected to the second filter chamber 103.

[0025] The fan-shaped filter body 3 includes a fan-shaped mounting shell 301. A first arc-shaped mounting port 302 is provided on the outer arc-shaped surface at the top of the fan-shaped mounting shell 301, and a second arc-shaped mounting port 303 is provided on the inner arc-shaped surface of the fan-shaped mounting shell 301. A first arc-shaped filter screen 304 is fixedly connected to the first arc-shaped mounting port 302, and a second arc-shaped filter screen 305 is fixedly connected to the second arc-shaped mounting port 303. The first arc-shaped filter screen 304, the second arc-shaped filter screen 305, and the fan-shaped mounting shell 301 surround a filling cavity, which is filled with activated carbon. An arc-shaped drainage cavity 306 is provided on the inner arc-shaped surface of the fan-shaped mounting shell 301, and the arc-shaped drainage cavity 306 communicates with the second arc-shaped mounting port 303.

[0026] The flipping body 4 includes a cylindrical shell 401, with arc-shaped drainage ports 405 at both the top and bottom of the cylindrical shell 401. A partition plate 402 is fixedly connected inside the cylindrical shell 401. Two first openings 403 are opened at both ends of the cylindrical shell 401, and the two first openings 403 are respectively connected to the space above and below the partition plate 402. A connecting plate 404 is fixedly connected to both sides of the cylindrical shell 401. Two fan-shaped filter bodies 3 are respectively arranged at the top and bottom of the connecting plate 404, and two arc-shaped drainage cavities 306 are respectively connected to the two arc-shaped drainage ports 405.

[0027] Both ends of the cylindrical shell 401 are fixedly connected to insertion shafts 5, and slide blocks 6 are inserted into the surfaces of both insertion shafts 5. Both sides of the inner wall of the second filter chamber 103 are provided with docking grooves 7, and the two slide blocks 6 are slidably connected within the two docking grooves 7 respectively. It should be understood that, supported by the insertion shafts 5 and the slide blocks 6, the flipping body 4 can be flipped within the second filter chamber 103, and when the fan-shaped filter body 3 needs to be removed, the slide blocks 6 can be removed from the docking grooves 7.

[0028] The pump suction assembly includes a first cover 8, which is slidably sleeved on the surface of one of the plug-in shafts 5. The end face of the first cover 8 has a first mating cavity 9, which is sleeved on one end of the cylindrical shell 401. A first pair of interfaces 10 is provided in the first mating cavity 9. The first pair of interfaces 10 is connected to the first through port 403 at the lower end of the cylindrical shell 401. A first pump suction pipe 11 is fixedly connected to the outer port of the first pair of interfaces 10. A second pump suction pipe 12 is connected to the flange at the end of the first pump suction pipe 11 away from the first pair of interfaces 10. A water pump 13 is fixedly connected to the bottom end of the second pump suction pipe 12. It should be understood that during the filtration process, when the water pump 13 is started, the water pump 13 will pump the first pair of interfaces 10 through the connection of the second pump suction pipe 12 and the first pump suction pipe 11. Under the connection of the first port 403, the water filtered inside the cylindrical shell 401 will be pumped, so that the water below the partition plate 402 will be pumped. The water in the second filter chamber 103 will pass through the first arc-shaped filter screen 304, and then be filtered by activated carbon between the first arc-shaped filter screen 304 and the second arc-shaped filter screen 305. The water filtered by activated carbon will pass through the second arc-shaped filter screen 305 and enter the arc-shaped drainage chamber 306. Under the guidance of the arc-shaped drainage port 405, it will enter the interior of the cylindrical shell 401 and finally be pumped away, thus achieving the treatment of sewage.

[0029] The drainage assembly includes a second cover 14, which is slidably sleeved on the surface of one of the insertion shafts 5. The end face of the second cover 14 has a second mating cavity 15, which is sleeved on the end of the cylindrical shell 401 away from the first cover 8. A second pair of interfaces 16 is provided in the second mating cavity 15, which is mated and connected to the first through-hole 403 at the upper end of the cylindrical shell 401. The outer port of the second pair of interfaces 16 is fixedly connected to a first return pipe 17, and the end of the first return pipe 17 away from the second pair of interfaces 16 is connected to... A diversion pipe 18 is provided, which includes a first pipe 1801 and a second pipe 1802. The first pipe 1801 is connected to the flange of the first return pipe 17, and the second pipe 1802 is fixedly connected to the drain outlet of the water pump 13. The first pipe 1801 and the second pipe 1802 are fixedly connected. A first solenoid valve 19 and a second solenoid valve 20 are fixedly connected on the surface of the first pipe 1801. The first solenoid valve 19 and the second solenoid valve 20 are located above and below the connection point of the first pipe 1801 and the second pipe 1802, respectively. It should be understood that during the process of the filtered water being drawn away by the pump, in order to backwash the fan-shaped filter body 3 located above the water, the first solenoid valve 19 is opened and the second solenoid valve 20 is closed, so that the pumped water enters the first pipe 1801 through the second pipe 1802, and then enters the first return pipe 17 through the first pipe 1801. The water passing through the first return pipe 17 will pass through the second connection port 16, the first inlet 403, the arc-shaped drainage cavity 306 located above the partition plate 402, the second arc-shaped filter body 305, the activated carbon, and the first arc-shaped filter body 304 in sequence, thereby realizing the backwashing cleaning method for the fan-shaped filter body 3 located above the water. Specifically, the first filter element 2 is a filter screen plate, which realizes the primary filtration of sewage. A water injection pipe 38 is fixedly installed at the top of the first filter chamber 101, which can inject sewage into the treatment tank 1 from the top of the first filter chamber 101.

[0030] A first partition 39 and a second partition 40 are fixedly connected to the inner wall of the treatment tank 1. There is a gap between the first partition 39 and the bottom surface of the treatment tank 1. A first filter chamber 101 is formed between the first partition 39 and the inner wall of the treatment tank 1. An overflow chamber 102 is formed between the first partition 39 and the second partition 40. A drain pipe 41 is fixedly connected to the top of the second partition 40. The water overflowing from the drain pipe 41 is drained to the surface of the fan-shaped filter body 3 located above the flipping body 4 to achieve rinsing.

[0031] The bottom of the first filter chamber 101 settles the water after primary filtration, reducing impurities in the water and lowering the filtration difficulty of the fan-shaped filter body 3 in the second filter chamber 103.

[0032] like Figure 1 As shown, a decentralized wastewater treatment method using a decentralized wastewater treatment and reuse device includes the following steps: Step 1, Water Injection: Sewage is injected into the first filter chamber 101. The sewage will be filtered through the first filter element 2 in the first filter chamber 101 to achieve primary filtration. The water filtered by the first filter element 2 flows through the overflow chamber 102 and enters the second filter chamber 103 from the top of the overflow chamber 102. The fan-shaped filter body 3 performs secondary filtration. The pump suction assembly sucks out the water filtered by the fan-shaped filter body 3 located below, thus removing the water after two stages of filtration and completing the sewage treatment. It should be understood that sewage is injected into the first filter chamber 101 through the water injection pipe 38. Step 2: Adjust the position of the fan-shaped filter body 3: Rotate the flip body 4 to exchange the positions of the fan-shaped filter bodies 3 at the top and bottom of the flip body 4. The pump suction assembly draws out the water filtered by the lower fan-shaped filter body 3, achieving the process of drawing out the water after two stages of filtration. During this process, the water drawn out by the pump is guided into the upper fan-shaped filter body 3 by the diversion assembly, forming a counter-current cleaning of the fan-shaped filter body 3. After cleaning, the diversion assembly is deactivated. It should be understood that: when the water pump 13 is started, the water pump 13 will pump water through the connection between the second pump suction pipe 12 and the first pump suction pipe 11 to the first pair of interfaces 10. Under the connection of the first port 403, the water filtered inside the cylindrical shell 401 is pumped out, causing the water below the partition plate 402 to be pumped out. The water in the second filter chamber 103 passes through the first arc-shaped filter screen 304, and then receives activated carbon filtration between the first arc-shaped filter screen 304 and the first arc-shaped filter screen 305. The water filtered by the activated carbon then passes through the first arc-shaped filter screen... After entering the arc-shaped drainage cavity 306, the water flows into the cylindrical shell 401 under the guidance of the arc-shaped drainage port 405, and is finally sucked away by the pump to treat the sewage. During the process of the filtered water being sucked away by the pump, in order to backwash the fan-shaped filter body 3 located above the water, the first solenoid valve 19 is opened and the second solenoid valve 20 is closed, so that the pumped water enters the first pipe 1801 through the second pipe 1802, and then enters the first return pipe 17 through the first pipe 1801. The water through the first return pipe 17 will pass through the second interface 16, the first port 403, the arc-shaped drainage cavity 306 located above the partition plate 402, the second arc-shaped filter body 305, activated carbon and the first arc-shaped filter body 304 in sequence, thereby realizing the backwashing cleaning method of the fan-shaped filter body 3 located above the water. After the backwashing is completed, the first solenoid valve 19 is closed and the second solenoid valve 20 is opened, and the pumped water is diverted away through the first pipe 1801 for recycling. Step 3: readjust the position of the fan-shaped filter element 3: rotate the flip body 4 to exchange the positions of the fan-shaped filter elements 3 at the top and bottom of the flip body 4, and adjust the backwashed fan-shaped filter element 3 into the water. This allows one fan-shaped filter element 3 to automatically clean the other fan-shaped filter element 3 during the filtration process, and after cleaning, adjust the cleaned fan-shaped filter element 3 into the water.

[0033] Throughout the filtration process, during the secondary filtration stage, two fan-shaped filter elements 3 can be replaced. While one fan-shaped filter element 3 is in the water for filtration, the filtered water is diverted to the other fan-shaped filter element 3 outside the water for backwashing. This eliminates the need to stop the machine for cleaning. Furthermore, the replacement of the two automatically cleaning fan-shaped filter elements 3 helps extend the duration of the secondary filtration and ensures the filtration process is completed.

[0034] like Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, in one embodiment, each of the two slide blocks 6 has a clearance opening 21 at its top. A sleeve 22 is rotatably connected inside the clearance opening 21. A follower gear 23 is fixedly connected to the surface of the sleeve 22. Both ends of the sleeve 22 penetrate the slide block 6 and extend to the outside of the slide block 6. Motors 24 are fixedly installed on both sides of the processing pool 1. The output end of the motor 24 penetrates the processing pool 1 and extends into the docking groove 7. A drive gear 25 is fixedly connected to the output end of the motor 24. The drive gear 25 and the follower gear 23 are connected to the follower gear 23. The bottom end of the moving gear 23 is engaged. A groove 28 is provided on the surface of the insertion shaft 5. A docking slider 29 is slidably arranged in the groove 28. The docking slider 29 is fixedly connected to the inner wall of the sleeve tube 22. A threaded surface 26 is provided on the surface of the insertion shaft 5. A fastening nut 27 is threadedly connected to the threaded surface 26. An insertion interface 30 is provided on the end face of each of the two slide blocks 6. A pressure-regulating column 31 is inserted into the insertion interface 30. The two pressure-regulating columns 31 are fixedly connected to the surfaces of the first cover 8 and the second cover 14, respectively. It should be understood that by supporting the insertion shaft 5 with the sleeve 22, the insertion shaft 5 is rotatably mounted on the slide 6. Then, when it is necessary to drive the rotating body 4 to rotate, the motor 24 is started. The motor 24 drives the drive gear 25 to rotate, the drive gear 25 drives the follower gear 23 to rotate, the follower gear 23 synchronously drives the sleeve 22 to rotate, the sleeve 22 synchronously drives the insertion shaft 5 to rotate, thereby driving the cylindrical shell 401 to rotate, thereby driving the entire rotating body 4 to rotate, realizing the exchange of positions between the two fan-shaped filter bodies 3. Furthermore, by driving the entire fan-shaped filter body 3 to rotate, the impurities on the surface of the fan-shaped filter body 3 can be shaken and cleaned. When one of the sector-shaped filter elements 3 malfunctions and requires maintenance, the slide block 6 can be removed from the docking groove 7, and then the fastening nut 27 can be rotated off the threaded surface 26 to remove the limit. Then, the slide block 6 can be removed from the plug shaft 5 to remove the limit on the pressure column 31. The first cover 8 and the second cover 14 can be removed from the two plug shafts 5 to maintain the sector-shaped filter element 3 separately. This makes the sector-shaped filter element 3 detachable and convenient for maintenance personnel.

[0035] like Figure 5 , Figure 6 , Figure 12 and Figure 13 As shown, in one embodiment, the top and bottom of the connecting plate 404 are provided with connecting rails 33, and the connecting rails 33 are slidably provided with plug seats 32. Two fan-shaped mounting shells 301 are distributed on the top and bottom of the connecting plate 404 and are fixedly connected to the plug seats 32 in the connecting rails 33 respectively. The two ends of the fan-shaped mounting shells 301 are respectively attached to the first cover 8 and the second cover 14. The two ends of the fan-shaped mounting shells 301 are fixedly connected with arc-shaped docking plates 42. The end faces of the first cover 8 and the second cover 14 are provided with annular grooves 43, and the annular grooves 43 dock with the surface of the arc-shaped docking plates 42. It should be understood that when one of the sector-shaped filter elements 3 malfunctions and requires maintenance, the slide block 6 can be removed from the docking groove 7, and then the fastening nut 27 can be rotated off the threaded surface 26 to remove the limit. Then, the slide block 6 can be removed from the plug shaft 5 to remove the limit on the pressure column 31. The first cover 8 and the second cover 14 can be removed from the two plug shafts 5. Then, the sector-shaped filter element 3 that needs maintenance can be pulled to disengage the plug seat 32 on the sector-shaped mounting shell 301 from the connecting rail 33. The sector-shaped filter element 3 that needs maintenance can be replaced as needed without replacing the entire filter, thus reducing maintenance costs.

[0036] A relief groove 34 is provided on the end face of the plug-in 32, and the fastening nut 27 is located in the relief groove 34. It should be understood that by providing the relief groove 34, space is provided for the fastening nut 27, so as to prevent the fastening nut 27 from being exposed and obstructing the movement of the slide block 6 in the mating slide groove 7.

[0037] like Figure 3 , Figure 4 , Figure 8 , Figure 9 and Figure 11 As shown, specifically, a lifting frame 35 is rotatably connected between the two sides of the slide block 6, and a limiting plate 36 is slidably connected to both sides of the top of the treatment pool 1. The two limiting plates 36 are respectively placed on the top of the two lifting frames 35 to limit the lifting frames 35, thereby maintaining the state of the slide block 6 in the docking groove 7. Both sides of the docking slide 7 are provided with overlapping grooves 37. The lifting frame 35 is slidably disposed in the two overlapping grooves 37, and the bottom end of the lifting frame 35 is attached to the bottom end of the overlapping groove 37. By setting the overlapping grooves 37, the lifting frame 35 is supported, thereby supporting the slide 6 and the fan-shaped filter body 3 as a whole.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 decentralized wastewater treatment and reuse device, comprising a treatment tank (1), wherein the treatment tank (1) has a first filter chamber (101), an overflow chamber (102), and a second filter chamber (103), characterized in that: It also includes a second filter element, a pump suction assembly, and a diversion assembly. The second filter element is disposed in the second filter chamber (103). The second filter element includes two fan-shaped filter bodies (3) and a flipping body (4). The flipping body (4) is disposed inside the second filter chamber (103). The two fan-shaped filter bodies (3) are respectively installed at the top and bottom of the flipping body (4). The lower fan-shaped filter body (3) is located in the water, and the upper fan-shaped filter body (3) is located above the water. The pump suction assembly is located at the first end of the flipping body (4). The pump suction assembly pumps out the water filtered by the lower fan-shaped filter body (3). The diversion assembly is located at the second end of the flipping body (4). The diversion assembly is used to divert the water pumped out through the upper fan-shaped filter body (3) to form a countercurrent cleaning of the fan-shaped filter body (3).

2. The decentralized wastewater treatment and reuse device according to claim 1, characterized in that: The fan-shaped filter body (3) includes a fan-shaped mounting shell (301). A first arc-shaped mounting port (302) is provided on the outer arc surface of the top of the fan-shaped mounting shell (301). A second arc-shaped mounting port (303) is provided on the inner arc surface of the fan-shaped mounting shell (301). A first arc-shaped filter screen (304) is fixedly connected in the first arc-shaped mounting port (302). A second arc-shaped filter screen (305) is fixedly connected in the second arc-shaped mounting port (303). A filling cavity is formed by the first arc-shaped filter screen (304), the second arc-shaped filter screen (305), and the fan-shaped mounting shell (301). Activated carbon is filled in the filling cavity. An arc-shaped drainage cavity (306) is provided on the inner arc surface of the fan-shaped mounting shell (301). The arc-shaped drainage cavity (306) is connected to the second arc-shaped mounting port (303).

3. A decentralized wastewater treatment and reuse device according to claim 2, characterized in that: The flipping body (4) includes a cylindrical shell (401), with arc-shaped drainage ports (405) at both the top and bottom of the cylindrical shell (401). A partition plate (402) is fixedly connected inside the cylindrical shell (401). Two first openings (403) are opened at both ends of the cylindrical shell (401). The two first openings (403) are respectively connected to the space above and below the partition plate (402). A connecting plate (404) is fixedly connected to both sides of the cylindrical shell (401). Two fan-shaped filter bodies (3) are respectively set at the top and bottom of the connecting plate (404), and the two arc-shaped drainage cavities (306) are respectively connected to the two arc-shaped drainage ports (405).

4. A decentralized wastewater treatment and reuse device according to claim 3, characterized in that: Both ends of the cylindrical shell (401) are fixedly connected to the plug shaft (5), and the surfaces of the two plug shafts (5) are each plugged with a slide block (6). The inner walls of the second filter chamber (103) are provided with docking grooves (7) on both sides, and the two slide blocks (6) are respectively slidably connected in the two docking grooves (7).

5. A decentralized wastewater treatment and reuse device according to claim 4, characterized in that: The pump suction assembly includes a first cover (8), which is slidably sleeved on the surface of one of the plug shafts (5). The end face of the first cover (8) has a first docking cavity (9), which is sleeved on one end of the cylindrical shell (401). A first pair of interfaces (10) is provided in the first docking cavity (9). The first pair of interfaces (10) is connected to the first through-hole (403) at the lower end of the cylindrical shell (401). The outer port of the first pair of interfaces (10) is fixedly connected to a first pump suction pipe (11). The flange of the end of the first pump suction pipe (11) away from the first pair of interfaces (10) is connected to a second pump suction pipe (12). The bottom end of the second pump suction pipe (12) is fixedly connected to a water pump (13).

6. A decentralized wastewater treatment and reuse device according to claim 4, characterized in that: The drainage assembly includes a second cover (14), which is slidably sleeved on the surface of one of the plug shafts (5). The end face of the second cover (14) has a second mating cavity (15), which is sleeved on the end of the cylindrical shell (401) away from the first cover (8). A second pair of interfaces (16) is provided inside the second mating cavity (15). The second pair of interfaces (16) is connected to a first through-hole (403) at the upper end of the cylindrical shell (401). A first return pipe (17) is fixedly connected to the outer port of the second pair of interfaces (16). The first return pipe (17) is located away from the second pair of interfaces (16). One end is connected to a diversion pipe (18), which includes a first pipe (1801) and a second pipe (1802). The first pipe (1801) is flange-connected to the first return pipe (17), and the second pipe (1802) is fixedly connected to the drain outlet of the water pump (13). The first pipe (1801) and the second pipe (1802) are fixedly connected. A first solenoid valve (19) and a second solenoid valve (20) are fixedly connected on the surface of the first pipe (1801). The first solenoid valve (19) and the second solenoid valve (20) are located above and below the connection point of the first pipe (1801) and the second pipe (1802).

7. A decentralized wastewater treatment and reuse device according to claim 4, characterized in that: Both slides (6) have clearance openings (21) at their top ends. A sleeve (22) is rotatably connected inside the clearance opening (21). A follower gear (23) is fixedly connected to the surface of the sleeve (22). Both ends of the sleeve (22) pass through the slide (6) and extend to the outside of the slide (6). Motors (24) are fixedly installed on both sides of the treatment pool (1). The output end of the motor (24) passes through the treatment pool (1) and extends into the docking groove (7). A drive gear (25) is fixedly connected to the output end of the motor (24). The drive gear (25) and the follower gear (23) are connected together. The bottom end is engaged, and a plug groove (28) is provided on the surface of the plug shaft (5). A docking slider (29) is slidably arranged in the plug groove (28). The docking slider (29) is fixedly connected to the inner wall of the sleeve (22). A threaded surface (26) is provided on the surface of the plug shaft (5). A fastening nut (27) is threaded on the threaded surface (26). A plug interface (30) is provided on the end face of both slides (6). A pressure-regulating column (31) is inserted into the plug interface (30). The two pressure-regulating columns (31) are fixedly connected to the surfaces of the first cover (8) and the second cover (14) respectively.

8. A decentralized wastewater treatment and reuse device according to claim 7, characterized in that: The top and bottom of the connecting plate (404) are provided with connecting rails (33), and a plug seat (32) is slidably arranged in the connecting rail (33). Two fan-shaped mounting shells (301) are distributed on the top and bottom of the connecting plate (404) and are fixedly connected to the plug seat (32) in the connecting rail (33). The two ends of the fan-shaped mounting shell (301) are respectively attached to the first cover (8) and the second cover (14). Both ends of the fan-shaped mounting shell (301) are fixedly connected with arc-shaped docking plates (42). The end faces of the first cover (8) and the second cover (14) are provided with annular grooves (43), and the annular grooves (43) are docked on the surface of the arc-shaped docking plates (42).

9. A decentralized wastewater treatment and reuse device according to claim 7, characterized in that: The end face of the plug (32) is provided with a relief groove (34), and the fastening nut (27) is located in the relief groove (34).

10. A decentralized wastewater treatment method, applicable to the decentralized wastewater treatment and reuse device described in claim 1, characterized in that: Includes the following steps: Step 1, Water Injection: Sewage is injected into the first filter chamber (101). The sewage will be filtered through the first filter element (2) in the first filter chamber (101) to achieve primary filtration. The water filtered by the first filter element (2) is then guided through the overflow chamber (102) and enters the second filter chamber (103) from the top of the overflow chamber (102). The fan-shaped filter body (3) performs secondary filtration. The pump suction assembly sucks out the water filtered by the fan-shaped filter body (3) located below, thus achieving the extraction of water after two stages of filtration and completing the sewage treatment. Step 2: Adjust the position of the fan-shaped filter (3): Rotate the flip body (4) to exchange the positions of the fan-shaped filter (3) at the top and bottom of the flip body (4). Use the pump suction assembly to suck out the water filtered by the lower fan-shaped filter (3). In the process of sucking out the water after two stages of filtration, the water sucked out by the pump is guided into the upper fan-shaped filter (3) by the diversion assembly to form a countercurrent cleaning of the fan-shaped filter (3). After cleaning, cancel the diversion assembly. Step 3: Adjust the position of the fan-shaped filter body (3) again: Rotate the flip body (4) to exchange the positions of the fan-shaped filter body (3) at the top and bottom of the flip body (4), and adjust the backwashed fan-shaped filter body (3) into the water. This allows one fan-shaped filter body (3) to automatically clean the other fan-shaped filter body (3) during the filtration process, and after cleaning, adjust the cleaned fan-shaped filter body (3) into the water.

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