Efficient multi-stage sewage treatment device

Abstract

The invention relates to the technical field of sewage treatment, in particular to an efficient multi-stage sewage treatment device which comprises a treatment tank body, a first reaction zone and a second reaction zone, one end of the treatment tank body is communicated with a filter tank, and microorganism placing frames are arranged on the inner wall of the treatment tank body at equal intervals; a blocking frame is arranged on the inner wall of the treatment tank body, the interior of the treatment tank body is divided into a first reaction area and a second reaction area by the blocking frame, and an arc-shaped slot is formed in the inner side of the filter tank. The barrier frame divides the treatment tank into a first reaction area and a second reaction area, the microorganism placing frame is filled with a proper filter material, and microorganisms form a biological membrane on the surface of the filter material to decompose organic matters in sewage. The different reaction areas are clear in work division, sewage flows in the areas in order, is filtered from the filter tank, is subjected to biological treatment in the second reaction area and then is further treated in the first reaction area, and the sewage treatment efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to an efficient multi-stage sewage treatment device. Background Art

[0002] With the acceleration of the industrialization process and the continuous growth of the urban population, the amount of sewage generated is increasing day by day. The components in sewage are complex, including a large amount of organic matter, grease, suspended solids, and various pollutants. If directly discharged without effective treatment, it will cause serious pollution to the ecological environment and threaten the water resource safety and ecological balance.

[0003] In the treatment process of the reaction zone, traditional multi-stage sewage treatment systems are usually simply composed of multiple independent treatment units connected in series. There is a lack of effective coordination and optimization between the units, and the stirring and mixing effect on sewage is not good, resulting in the treatment agent not being able to fully contact and react with the sewage. Especially in the biological treatment stage, the fluidity of the sewage is insufficient, and microorganisms cannot fully decompose the organic matter in the sewage, making it difficult for the treated water quality to meet the discharge standard. At the same time, the connection between different reaction zones is unreasonable, and the flow of sewage between regions is not smooth, affecting the overall treatment efficiency. Moreover, the treatment process is cumbersome, increasing the sewage treatment cost and time cost. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an efficient multi-stage sewage treatment device to solve the problems existing in the above background art.

[0005] An efficient multi-stage sewage treatment device includes a treatment tank body, a first reaction zone, and a second reaction zone. One end of the treatment tank body is connected with a filter tank in a communicating manner. The inner wall of the treatment tank body is equidistantly provided with microbial placement frames. The inner wall of the treatment tank body is provided with a barrier frame. The barrier frame divides the interior of the treatment tank body into a first reaction zone and a second reaction zone. An arc-shaped slot is opened on the inner side of the filter tank. An arc-shaped baffle is movably connected to the inner wall of the arc-shaped slot. A motor frame is arranged on the top of the filter tank. A driving motor is arranged on the top of the motor frame. A square opening is opened on the outer side of the filter tank. A water inlet pipe is arranged on the outer side of the filter tank. One end of the water inlet pipe is provided with a discharge elbow. A spiral filtering component is arranged on the inner side wall of the filter tank. The output end of the driving motor is connected with a stirring component, and the stirring component is arranged inside the spiral filtering component. A driving component is arranged inside the barrier frame, where the barrier frame is located in front of the microbial placement frames. A discharge valve is arranged at the other end of the treatment tank body, and the discharge valve is communicated with the treatment tank body.

[0006] The driving component includes a water inlet, a diversion plate, a limiting hole, a diversion opening, and a driving part. A cavity is formed in the middle of the barrier frame. The water inlet is opened on one side surface of the barrier frame. The diversion plate is fixedly arranged on the inner side wall of the cavity and is flush with the lower opening of the water inlet. The limiting hole is opened on the other side surface of the barrier frame. The diversion opening is opened on the other side surface of the barrier frame. The water inlet is located below the top end of the limiting hole and above the diversion opening. The driving part is movably installed in the cavity of the barrier frame and a part of the driving part penetrates through the limiting hole.

[0007] The driving part includes a shaft sleeve, a rotating striking plate, a water wheel, a support seat, and a floating block. The floating block is movably arranged in the cavity inside the barrier frame. The support seats are symmetrically and fixedly arranged on the top surface of the floating block. The water wheel is rotatably installed inside the two support seats. The shaft sleeve is rotatably sleeved on the outer surface of the central shaft of the water wheel. One end of the rotating striking plate is fixedly installed at the shaft end of the central shaft of the water wheel.

[0008] The end face of the shaft sleeve is parallel to one side of the barrier frame. The shaft end of the central shaft of the water wheel passes through the limiting hole. The water wheel and the shaft sleeve are respectively arranged inside and outside the barrier frame. The initial position of the central shaft of the water wheel is at the bottommost end of the limiting hole.

[0009] The stirring component includes a rotating shaft and stirring blades. The rotating shaft is fixedly installed at the output end of the driving motor. The rotating shaft movably penetrates through the motor frame. The stirring blades are fixedly installed on the outer side of the rotating shaft. The rotating shaft is located at the central position of the spiral filtering component. The stirring radius of the stirring blades is smaller than the inner diameter of the spiral filtering component.

[0010] A water pump assembly is arranged on the outer side of the arc-shaped baffle. The water pump assembly consists of a liquid extraction pump and a long pipe. The water inlet end of the liquid extraction pump is connected to one end of the long pipe. The other end of the long pipe passes through the arc-shaped baffle and extends to the inside of the filter tank. The water drainage end of the liquid extraction pump faces the inside of the second reaction zone. A push-pull handle is arranged at the top of the arc-shaped baffle. Sealing rubber strips are arranged on the end faces of the arc-shaped baffle. A hydraulic lifting rod is arranged on the outer side of the filter tank. The output end of the hydraulic lifting rod is fixedly connected to the driving motor.

[0011] The spiral filtering component includes a spiral diversion plate, a spiral filter element, a spiral groove, and a buckle. The spiral diversion plate is fixedly installed on the inner side wall of the filter tank. The spiral groove is opened on the top surface of the spiral diversion plate. The spiral filter element is inserted into the inner wall of the spiral groove. The bottom surface of the spiral filter element is parallel to the inner bottom wall of the spiral groove. The buckle is movably clamped at the upper end of the spiral diversion plate. The spiral diversion plate surrounds the stirring component.

[0012] Both ends of the spiral deflector are open, the upper spiral end of the spiral filter element is closed, and the lower spiral end is open. A spiral chute is provided on the bottom surface of the spiral deflector. One end of the buckle is fixedly installed with a spiral bar, and the spiral bar is movably installed on the inner wall of the spiral chute. The spiral bar can drive the spiral filter element to rotate and slide along the inner wall of the spiral chute.

[0013] The bottom surface of the spiral bar is fixedly installed with a right-angle connecting rod. The horizontal end of the right-angle connecting rod is fixedly installed with a movable sleeve disc, and the movable sleeve disc is rotatably arranged on the inner bottom wall of the filter tank. The movable sleeve disc can be linked with the stirring assembly, and the vertical end of the right-angle connecting rod is a telescopic structure.

[0014] A circular hole is provided in the middle of the movable sleeve disc. Electromagnetic blocks are equidistantly arranged inside the circular hole of the movable sleeve disc. A magnetic attraction block is arranged on the outer side of the rotating shaft, and the magnetic attraction block and the electromagnetic block can be magnetically connected.

[0015] The beneficial effects of the present invention compared with the prior art are as follows: This device filters sewage by using a spiral filter element, such as a polypropylene PP meltblown filter element. Its unique fiber structure is loose and has a high porosity, which can effectively intercept oils and suspended solids in the sewage. The sewage enters from the top of the spiral deflector and is filtered in a spiral shape along the contour of the spiral filter element, increasing the filtration area and contact time, and significantly improving the filtration effect. Compared with the traditional simple filter screen filtration, it can remove impurities more thoroughly and reduce the burden on the subsequent treatment unit.

[0016] This device can fully stir and mix: The driving assembly ensures the full mixing of sewage and treatment agents. In the first reaction zone, the driving assembly uses the gravity of the sewage to impact the water wheel, driving the rotating impact plate to stir the incoming sewage. As the water level rises, it can also stir the upper layer of the sewage to ensure the full mixing of the treatment agents falling on the sewage surface. In the filter tank, the stirring assembly stirs the sewage filtered by the spiral filtration assembly and conducts oxidation treatment.

[0017] This device optimizes the reaction process: The barrier frame divides the treatment tank into a first reaction zone and a second reaction zone. The microbial placement frame is filled with suitable filter materials, and microorganisms form a biofilm on the surface of the filter materials to decompose the organic matter in the sewage. Different reaction zones have clear division of labor, and the sewage flows orderly between each region, from filtration in the filter tank, to biological treatment in the second reaction zone, and then to further treatment in the first reaction zone, improving the efficiency and quality of sewage treatment.

[0018] Convenient filter element replacement: Through the cooperation of components such as a movable turntable, a right-angle connecting rod, and a spiral strip, when the spiral filter element needs to be replaced, only need to control the driving motor to drive the rotating shaft to rotate, then the spiral filter element can be screwed out from the spiral groove. The operation is simple, without the need to disassemble a large number of equipment components, reducing the filter element replacement time, ensuring the continuity of sewage treatment work, and reducing the maintenance cost.

[0019] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of the present invention; Figure 2 is a schematic diagram of the overall structure of the present invention (first perspective); Figure 3 is a schematic diagram of a partial structure of the present invention Figure 1 (sectional view); Figure 4 is a schematic diagram of a partial structure of the present invention Figure 2 (sectional view); Figure 5 is a schematic diagram of a partial structure of the present invention Figure 3 (sectional view); Figure 6 is a schematic diagram of a partial structure of the present invention Figure 4 (sectional view); Figure 7 is a schematic diagram of a partial structure of the present invention Figure 5 ; Figure 8 is of the present invention Figure 7 a partially enlarged schematic diagram at position A; Figure 9 is a schematic diagram of a partial structure of the present invention Figure 6 ; Figure 10 is a schematic diagram of a partial structure of the present invention Figure 7 ; Figure 11 is a schematic diagram of the arc-shaped baffle structure of the present invention; Figure 12 is a schematic diagram of a partial structure of the present invention Figure 8 ; Figure 13 is a schematic diagram of the overall structure of the present invention (second perspective); Figure 14 is a schematic diagram of a partial structure of the present invention Figure 9 ; Figure 15 is a schematic diagram of a partial structure of the present invention Figure 10 ; Figure 16 is a schematic diagram of a partial structure of the present invention Figure 10 I (sectional view).

[0021] In the figure, 1 is the main body of the treatment tank; 2 is the first reaction zone; 3 is the barrier frame; 4 is the second reaction zone; 5 is the microbial placement frame; 6 is the filter tank; 7 is the water pump assembly; 8 is the arc-shaped baffle; 9 is the driving motor; 10 is the motor frame; 11 is the square opening; 12 is the water inlet pipe; 13 is the spiral filter element; 14 is the spiral guide plate; 15 is the rotating shaft; 16 is the stirring blade; 17 is the movable sleeve plate; 18 is the arc-shaped slot; 19 is the aeration head; 20 is the diversion port; 21 is the right-angle connecting rod; 22 is the discharge elbow; 23 is the rotating striking plate; 24 is the buckle; 25 is the spiral groove; 26 is the bushing; 27 is the water wheel; 28 is the support seat; 29 is the floating block; 30 is the water inlet; 31 is the diversion plate; 32 is the limiting hole; 33 is the electromagnet; 34 is the magnetic attraction block; 35 is the hydraulic lifting rod; 36 is the V-shaped spring buckle; 37 is the guide post; 38 is the compression spring; 39 is the microbial block. Specific embodiments

[0022] The following further describes the present invention with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the drawings is for better explanation. The structure of the present invention necessarily goes beyond these limited embodiments, and for some equivalent replacement schemes or common means, no detailed description is given herein, but they still fall within the protection scope of this application.

[0023] Figures 1 - 16 This is the best embodiment of the present invention. The following further describes the present invention with reference to the attached Figures 1 - 16 drawings.

[0024] An embodiment of the present invention provides a technical solution: a high-efficiency multi-stage sewage treatment device, including the main body 1 of the treatment tank, the first reaction zone 2 and the second reaction zone 4. One end of the main body 1 of the treatment tank is connected and provided with a filter tank 6. The inner wall of the main body 1 of the treatment tank is equidistantly provided with microbial placement frames 5. The inner wall of the main body 1 of the treatment tank is provided with a barrier frame 3. The barrier frame 3 divides the interior of the main body 1 of the treatment tank into a first reaction zone 2 and a second reaction zone 4. An arc-shaped slot 18 is opened on the inner side of the filter tank 6. The inner wall of the arc-shaped slot 18 is movably connected with an arc-shaped baffle 8. The top of the filter tank 6 is provided with a motor frame 10. The top of the motor frame 10 is provided with a driving motor 9. A square opening 11 is opened on the outer side of the filter tank 6. A water inlet pipe 12 is provided on the outer side of the filter tank 6. One end of the water inlet pipe 12 is provided with a discharge elbow 22. The inner side wall of the filter tank 6 is provided with a spiral filtering component. The output end of the driving motor 9 is connected with a stirring component. The stirring component is arranged inside the spiral filtering component. A driving component is arranged inside the barrier frame 3. Among them, the barrier frame 3 is located in front of the microbial placement frame 5. The other end of the main body 1 of the treatment tank is provided with a discharge valve, and the discharge valve is communicated with the main body 1 of the treatment tank. The discharge valve is used to discharge the treated and purified sewage.

[0025] When the device is in use, preferably, the sewage can be first conveyed to the spiral filtration component through the discharge elbow 22 for filtration. The filtered sewage is stored in the filter tank 6 where a sealed environment is formed after the arc-shaped baffle 8 is inserted into the arc-shaped slot 18. After oxidation treatment, it is pumped by the water pump assembly 7 and enters the second reaction zone 4 for subsequent treatment.

[0026] The insertion of the arc-shaped baffle 8 into the arc-shaped slot 18 can form a sealed filter tank 6 for oxidizing the sewage. When oxidation treatment is not required, the arc-shaped baffle 8 can be directly opened to allow the sewage filtered by the spiral filtration component to directly enter the second reaction zone 4.

[0027] Specifically, the driving component includes a water inlet 30, a diversion plate 31, a limiting hole 32, a diversion port 20, and a driving part. A cavity is formed in the middle of the barrier frame 3. The water inlet 30 is opened on one surface of the barrier frame 3. The diversion plate 31 is fixedly arranged on the inner side wall of the cavity and is flush with the lower opening of the water inlet 30. The limiting hole 32 is opened on the other surface of the barrier frame 3. As Figure 12 shown, the diversion port 20 is opened on the other surface of the barrier frame 3. The water inlet 30 is located below the top of the limiting hole 32 and above the diversion port 20. The driving part is movably installed in the cavity of the barrier frame 3 and a part of the driving part penetrates through the limiting hole 32.

[0028] The driving part includes a bushing 26, a rotating striker plate 23, a water wheel 27, a support seat 28, and a floating block 29. The floating block 29 is movably arranged in the cavity inside the barrier frame 3. Two support seats 28 are symmetrically and fixedly arranged on the top surface of the floating block 29. The water wheel 27 is rotatably installed inside the two support seats 28. An activity hole for installing the water wheel 27 is opened on the surface of the support seat 28. The bushing 26 is sleeved on the outer surface of the central shaft of the water wheel 27. The rotating striker plate 23 is fixedly installed at the shaft end of the central shaft of the water wheel 27. The end face of the bushing 26 is parallel to one side of the barrier frame 3. The structure of the bushing 26 is a hollow cylinder. The central shaft of the water wheel 27 passes through the bushing 26. The shaft end of the central shaft of the water wheel 27 passes through the limiting hole 32. The water wheel 27 and the bushing 26 are respectively arranged inside and outside the barrier frame 3. The initial position of the central shaft of the water wheel 27 is at the bottommost end of the limiting hole 32.

[0029] In this embodiment, a driving component is provided to stir the sewage accumulated in the first reaction zone 2 and subjected to biological treatment to keep it in a flowing state at all times, ensuring the full mixing of subsequent treatment agents. The water inlet 30 opened on one side of the barrier frame 3 is used to discharge the overflowing sewage. The sewage discharged through the water inlet 30 is discharged into the interior of the first reaction zone 2 through the diversion port 20. The sewage is discharged downward under the guiding action of the guiding plate 31. Due to the gravitational force of the sewage, the water wheel 27 will be impacted. At this time, the water wheel 27 will rotate self - rotatably, driving the rotating impact plate 23 to rotate. The rotating impact plate 23 stirs the sewage flowing into the interior of the first reaction zone 2. Among the optional treatment methods, the sewage in the first reaction zone 2 undergoes a neutralization reaction with the treatment agent. The sewage is neutralized by adding neutralizing reagents such as liquid caustic soda to the first reaction zone 2.

[0030] Since one side of the barrier frame 3 is connected to the first reaction zone 2 and the other side is in a closed state, as more and more water flows into the first reaction zone 2, the water level inside the first reaction zone 2 gradually rises. At this time, the water level in the cavity opened in the middle of the barrier frame 3 also gradually rises. The sleeve 26 drives the water wheel 27 and the rotating impact plate 23 to move upward under the action of buoyancy, thereby realizing the stirring of the uppermost layer of the sewage and ensuring the full mixing of the treatment agent falling on the sewage surface. The rotating impact plate 23 is rectangular and made of corrosion - resistant plastic.

[0031] Specifically, the stirring component includes a rotating shaft 15 and stirring blades 16. The rotating shaft 15 is fixedly installed at the output end of the driving motor 9. The rotating shaft 15 movably penetrates the motor frame 10. The stirring blades 16 are fixedly installed on the outside of the rotating shaft 15. The rotating shaft 15 is located at the center of the spiral filtering component, and the stirring radius of the stirring blades 16 is smaller than the inner diameter of the spiral filtering component.

[0032] In this embodiment, a stirring component is provided to stir the sewage filtered by the spiral filtering component to ensure the fluidity of the sewage. Preferably, the arc - shaped baffle 8 can be inserted into the arc - shaped slot 18 to partition a part of the filter tank 6 to form a closed environment, and an oxidation reagent is added to the sewage filtered by the spiral filtering component. Taking the addition of Fenton reagent as an example, it can effectively treat highly toxic substances such as cyanide and phenol substances. The stirring component plays a role in stirring the oxidation reagent and the sewage.

[0033] It is drawn by the water pump assembly 7 and flows into the second reaction zone 4. The microbial placement frame 5 is filled with filter media or microbial blocks 39. The microbial block 39 is a plastic frame filled with filter media. The inner bottom wall of the microbial placement frame 5 is fixedly installed with a guide post 37. The microbial block 39 is sleeved on the guide post 37 through the guide block on the side. A compression spring 38 is sleeved outside the guide post 37. The top of the compression spring 38 is fixedly connected to the bottom of the guide block. By pressing the microbial block 39, it moves downward along the outside of the guide post 37 and compresses the compression spring 38. The microbial block 39 is inserted into the interior of the microbial placement frame 5 and is clamped with the filter holes opened on the outside of the microbial placement frame 5 through the V-shaped spring buckle 36 arranged on the outside of the microbial block 39, realizing the fixation of the microbial block 39. The V-shaped spring buckle 36 is composed of a spring piece and a movable strip. The movable strip is used to clamp with the filter hole. When it is necessary to take out the microbial block 39 from the microbial placement frame 5, by synchronously pressing the movable strip, it is separated from the filter hole, so that the microbial block 39 pops up upward under the action of the elastic potential energy of the compression spring 38, realizing the replacement, taking and placing of the microbial block 39. The surface of the microbial placement frame 5 is equidistantly provided with filter holes. The filter media in the filter media and the microbial block 39 can adopt any one of gravel, pebble, cinder, coke, and plastic filter media. For example, when gravel is used as the filter media, its particle size is generally 3 to 5 cm, having certain mechanical strength and chemical stability; For example, the plastic filter media can adopt corrugated plates, honeycomb-shaped or spherical filter media made of polyvinyl chloride, polypropylene, etc. Its unique shape and structure are beneficial to the attachment of microorganisms and the penetration of sewage. Microorganisms form a biofilm on the surface of the filter media and decompose the organic matter in the sewage. As sewage continuously flows into the second reaction zone 4, the treated sewage is discharged through the water inlet 30 into the cavity inside the barrier frame 3 and converges into the first reaction zone 2 through the diversion port 20.

[0034] An aeration head 19 is also arranged in the second reaction zone 4 for performing air flotation operation when necessary.

[0035] Specifically, a water pump assembly 7 is arranged on the outer side of the arc-shaped baffle 8. The water pump assembly 7 is composed of a liquid extraction pump and a long pipe. The water inlet end of the liquid extraction pump is connected to one end of the long pipe, and the other end of the long pipe passes through the arc-shaped baffle 8 and extends into the inside of the filter tank 6. The drainage end of the liquid extraction pump faces the inside of the second reaction zone 4. A push-pull handle is arranged on the top of the arc-shaped baffle 8, and sealing rubber strips are arranged on the end faces of the arc-shaped baffle 8. A hydraulic lifting rod 35 is arranged on the outer side of the filter tank 6. The output end of the hydraulic lifting rod 35 is fixedly connected to the driving motor 9. By controlling the telescopic state of the hydraulic lifting rod 35, the rotating shaft 15 and the driving motor 9 are driven to be lifted integrally to change the stirring position. When the rotating shaft 15 descends to the maximum position, the rotating shaft 15 is butted against the movable sleeve plate 17, so that the rotating shaft 15 and the movable sleeve plate 17 are connected as a whole. The hydraulic lifting rod 35 is a prior art and can be connected to the driving motor 9 in this device through a connecting base to adjust the distance between the rotating shaft 15 and the inner bottom wall of the filter tank 6. The specific structure thereof will not be elaborated here.

[0036] In this implementation scheme, in combination with Figure 2 and Figure 11 , since the other end of the long pipe passes through the arc-shaped baffle 8 and the drainage end of the liquid extraction pump is higher than the height of the arc-shaped baffle 8, and the drainage end of the liquid extraction pump faces the inside of the second reaction zone 4, a water pump assembly 7 is arranged on the outer side of the arc-shaped baffle 8 to extract the sewage in the filter tank 6 and make it enter the second reaction zone 4 for a biological reaction to decompose the organic matter in the water. The push-pull handle arranged on the top of the arc-shaped baffle 8 is used to drive the arc-shaped baffle 8. The driving is mainly carried out by an external force push, which can be manually pushed by using tools to make it buckle with the arc-shaped slot 18 to form a closed area.

[0037] Specifically, the spiral filtering assembly includes a spiral guide plate 14, a spiral filter element 13, a spiral groove 25, and a buckle 24. The spiral guide plate 14 is fixedly installed on the inner side wall of the filter tank 6. The spiral groove 25 is opened on the top surface of the spiral guide plate 14. The spiral filter element 13 is inserted into the inner wall of the spiral groove 25. The bottom surface of the spiral filter element 13 is parallel to the inner bottom wall of the spiral groove 25 and has a certain gap. The buckle 24 is movably clamped at the upper end of the spiral guide plate 14. The spiral guide plate 14 surrounds the stirring assembly. Such as Figure 15As shown, both ends of the spiral deflector 14 are open. The upper spiral end of the spiral filter element 13 is in a closed state, and the lower spiral end is in an open state. A spiral chute is provided on the bottom surface of the spiral deflector 14. The buckle 24 is clamped at one end of the spiral deflector 14, and one end of the buckle 24 is detachably connected to the spiral filter element 13. A spiral bar is fixedly installed at one end of the buckle 24, and the spiral bar is movably installed on the inner wall of the spiral chute. Therefore, when the spiral bar makes a spiral movement on the inner wall of the spiral chute (when the spiral bar rotates counterclockwise, the spiral bar protrudes outward relative to one end of the spiral deflector 14, thereby driving the buckle 24 to separate from one end of the spiral deflector 14, thus driving the spiral filter element 13 to separate from the open end at the upper end of the spiral deflector 14 and discharging from the square opening 11), it can drive the spiral filter element 13 to move along the inner side of the spiral deflector 14. A right-angle connecting rod 21 is fixedly installed on the bottom surface of the spiral bar. A movable sleeve disc 17 is fixedly installed at the horizontal end of the right-angle connecting rod 21, and the movable sleeve disc 17 is linked with the stirring assembly. It should be noted that the vertical end of the right-angle connecting rod 21 is composed of telescopic connecting rods. When the right-angle connecting rod 21 rotates, the spiral bar will generate a vertical displacement under the action of the spiral chute. Therefore, the right-angle connecting rod 21 will expand and contract following the movement track.

[0038] In this embodiment, the spiral deflector 14 is provided for installing the spiral filter element 13. The spiral deflector 14 is spiral-shaped. The spiral filter element 13 is used to filter the sewage discharged by the discharge elbow 22. The spiral filter element 13 is spirally arranged on the inner wall of the spiral groove 25. Preferably, the spiral filter element 13 can be made of polypropylene PP melt-blown filter element. Its fiber structure is loose, has a high porosity, can accommodate more grease, has a good interception effect on grease and suspended solids, and the structure of the spiral filter element 13 is flexible and has a certain elastic deformation ability. The spiral filter element 13 can be produced into a shape adapted to the spiral deflector 14. The sewage discharged through the discharge elbow 22 is discharged from the top end of the spiral deflector 14. As the filtration progresses, the sewage will gradually flow spirally along the contour of the spiral filter element 13 and be filtered, as Figure 15 shown. The cross-section of the spiral filter element 13 is U-shaped. The sewage is filtered along the two parallel spiral filter elements 13 on both sides. The filtered sewage passes through the spiral groove 25 and is discharged to the closed area through the end of the spiral deflector 14.

[0039] By arranging a spiral strip at the bottom end of the spiral deflector 14 to drive the spiral filter element 13 to rotate out along the inner wall of the spiral deflector 14. Specifically, when the spiral strip rotates driven by the right-angle connecting rod 21, the upper end of the spiral strip protrudes outward from the upper opening of the spiral deflector 14, thereby driving the buckle 24 to separate from the upper end of the spiral deflector 14, and then driving the spiral filter element 13 to separate from the upper opening of the spiral deflector 14. And a small part of the spiral filter element 13 extends outward from the square opening 11, which is convenient for personnel to detach and separate the spiral filter element 13 and the buckle 24 outside and pull it out. It should be noted that this operation is only carried out when the spiral filter element 13 needs to be replaced; when the rotating shaft 15 and the movable sleeve plate 17 are adsorbed together due to magnetic action (for the specific adsorption method, please refer to the following text), the rotating shaft 15 drives the movable sleeve plate 17 to rotate. At this time, the movable sleeve plate 17 will drive the right-angle connecting rod 21 to rotate. Since the vertical part of the right-angle connecting rod 21 is fixedly connected to the spiral strip, when the right-angle connecting rod 21 makes a circular motion, it will drive the spiral strip to rotate along the inner wall of the spiral chute. The rotation of the right-angle connecting rod 21 can drive the spiral filter element 13, making it rotate from inside the spiral chute 25 and spin out from the square opening 11. After one end of the spiral filter element 13 spins out, the rotating shaft 15 and the movable sleeve plate 17 are separated, and one end of the spiral filter element 13 is pulled out from inside the spiral chute 25. Then, a new spiral filter element 13 is inserted into the spiral chute 25 from the upper opening of the spiral deflector 14 and makes it move along the inner wall of the spiral chute 25. Then, the rotating shaft 15 and the movable sleeve plate 17 are rotated in the reverse direction. After the spiral filter element 13 is completely filled into the spiral chute 25, the rotating shaft 15 and the movable sleeve plate 17 are separated. The rotation direction of the rotating shaft 15 can be controlled by controlling the rotation direction of the driving motor 9. Specifically, an external commutator can be used to control the driving motor 9. The commutator is a prior art and can be used in cooperation with the driving motor 9 in this device. The specific control principle and model are not elaborated here.

[0040] Specifically, the movable sleeve plate 17 is rotatably arranged on the inner bottom wall of the filter tank 6. A circular hole is opened in the middle of the movable sleeve plate 17. A plurality of electromagnetic blocks 33 are equidistantly arranged on the inner bottom wall of the circular hole of the movable sleeve plate 17. A magnetic attraction block 34 is arranged on the outer side of the rotating shaft 15. The initial state of the magnetic attraction block 34 and the electromagnetic blocks 33 is a separated state.

[0041] In this implementation scheme, a magnetic attraction block 34 is arranged on the surface of the rotating shaft 15 and near the bottom end, which is used in cooperation with the electromagnetic block 33 arranged on the inner bottom wall of the round hole to achieve adsorption. The magnetic attraction block 34 controls its distance from the annular electromagnetic block 33 through the drive of the rotating shaft 15. When the magnetic attraction block 34 is in contact with the electromagnetic block 33, adsorption connection is achieved. It should be noted that the electromagnetic block 33 is powered by an external power supply, and its on-off state is controlled to realize the switching of the working state of the electromagnetic block 33. When the magnetic attraction block 34 and the electromagnetic block 33 are adsorbed, the electromagnetic block 33 is in the energized state. When it is necessary to separate the magnetic attraction block 34 from the electromagnetic block 33, only the electromagnetic block 33 needs to be powered off. The energized electromagnetic block 33 connects the rotating shaft 15 and the movable sleeve plate 17 into one body, and then drives the right-angle connecting rod 21 to make a circular motion to drive the spiral strip to move along the spiral chute at the bottom of the spiral guide plate 14. The lengths of the two groups of right-angle connecting rods 21 are different, and one group is shorter than the other group and is adapted to the spiral strip; Under the action of the hydraulic lifting rod 35, when the rotating shaft 15 descends to the maximum position, the rotating shaft 15 and the movable sleeve plate 17 are adsorbed and connected into one body, so that the rotating shaft 15 and the movable sleeve plate 17 are connected into one body through the magnetic attraction block 34. Therefore, when the rotating shaft 15 rotates, the movable sleeve plate 17 can be driven to rotate, and by controlling the rotation direction of the drive motor 9, the replacement of the spiral filter element 13 can be realized as described above.

[0042] The above is only a preferred embodiment of the present invention, and it does not limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A high-efficiency multi-stage sewage treatment device, comprising a treatment tank body (1), a first reaction zone (2) and a second reaction zone (4), characterized in that: One end of the treatment tank body (1) is connected to a filter tank (6), the inner wall of the treatment tank body (1) is equidistantly provided with microorganism placement frames (5), the inner wall of the treatment tank body (1) is provided with a barrier frame (3), the barrier frame (3) divides the interior of the treatment tank body (1) into a first reaction zone (2) and a second reaction zone (4), the inner side of the filter tank (6) is provided with an arc-shaped slot (18), the inner wall of the arc-shaped slot (18) is movably connected with an arc-shaped baffle (8), the top of the filter tank (6) is provided with a motor frame (10), and the top of the motor frame (10) is provided with a drive motor ( 9), a square opening (11) is provided on the outside of the filter tank (6), a water inlet pipe (12) is provided on the outside of the filter tank (6), a discharge elbow (22) is provided at one end of the water inlet pipe (12), a spiral filter assembly is provided on the inner wall of the filter tank (6), an output end of the drive motor (9) is connected to a stirring assembly, the stirring assembly is provided on the inner side of the spiral filter assembly, a drive assembly is provided on the inner side of the barrier frame (3), wherein the barrier frame (3) is located in front of the microorganism placement frame (5), and a discharge valve is provided at the other end of the treatment tank body (1), and the discharge valve is connected to the treatment tank body (1).

2. A high-efficiency multi-stage sewage treatment device according to claim 1, characterized in that: The driving assembly comprises a water inlet (30), a guide plate (31), a limiting hole (32), a guide port (20) and a driving unit. A cavity is provided in the middle of the barrier frame (3). The water inlet (30) is provided on one side surface of the barrier frame (3). The guide plate (31) is fixedly arranged on the inner side wall of the cavity and is flush with the lower opening of the water inlet (30). The limiting hole (32) is provided on the other side surface of the barrier frame (3). The guide port (20) is provided on the other side surface of the barrier frame (3). The water inlet (30) is located below the top end of the limiting hole (32). The water inlet (30) is located above the guide port (20). The driving unit is movably mounted in the cavity of the barrier frame (3) and a part of the driving unit is arranged to pass through the limiting hole (32).

3. A high-efficiency multi-stage sewage treatment device according to claim 2, characterized in that: The driving part comprises a shaft sleeve (26), a rotating striking plate (23), a water wheel (27), a support seat (28), and a floating block (29); the floating block (29) is movably arranged in a cavity inside the blocking frame (3); the support seat (28) is symmetrically fixedly arranged on the top surface of the floating block (29); the water wheel (27) is rotatably mounted on the inner sides of two supporting seats (28); the shaft sleeve (26) is rotatably sleeved on the outer surface of the central axis of the water wheel (27); and one end of the rotating striking plate (23) is fixedly mounted on the shaft end of the central axis of the water wheel (27).

4. The high-efficiency multi-stage sewage treatment device according to claim 3 is characterized in that: The end surface of the shaft sleeve (26) is arranged parallel to one side of the blocking frame (3); the shaft end of the central axis of the water wheel (27) passes through the limiting hole (32); the water wheel (27) and the shaft sleeve (26) are arranged inside and outside the blocking frame (3), respectively; the initial position of the central axis of the water wheel (27) is located at the bottom end of the limiting hole (32).

5. The high-efficiency multi-stage sewage treatment device according to claim 1, characterized in that: The stirring assembly comprises a rotating shaft (15) and a stirring blade (16); the rotating shaft (15) is fixedly mounted on the output end of the driving motor (9); the rotating shaft (15) movably penetrates the motor frame (10); the stirring blade (16) is fixedly mounted on the outside of the rotating shaft (15); the rotating shaft (15) is located at the center of the spiral filter assembly; and the stirring radius of the stirring blade (16) is smaller than the inner diameter of the spiral filter assembly.

6. A high-efficiency multi-stage sewage treatment device according to claim 5, characterized in that: A water pump assembly (7) is arranged on the outside of the arc-shaped baffle (8), and the water pump assembly (7) is composed of a liquid pump and a long tube. The water inlet end of the liquid pump is connected to one end of the long tube, and the other end of the long tube passes through the arc-shaped baffle (8) and extends to the inside of the filter tank (6). The discharge end of the liquid pump faces the inside of the second reaction zone (4), wherein a push-pull handle is arranged on the top of the arc-shaped baffle (8), and sealing rubber strips are arranged on the end faces of the arc-shaped baffle (8). A hydraulic lifting rod (35) is arranged on the outside of the filter tank (6), and the output end of the hydraulic lifting rod (35) is fixedly connected to the drive motor (9).

7. The high-efficiency multi-stage sewage treatment device according to claim 6, characterized in that: The spiral filter assembly comprises a spiral guide plate (14), a spiral filter element (13), a spiral groove (25), and a buckle (24), wherein the spiral guide plate (14) is fixedly mounted on the inner side wall of the filter tank (6), the spiral groove (25) is formed on the top surface of the spiral guide plate (14), the spiral filter element (13) is plugged into the inner wall of the spiral groove (25), wherein the bottom surface of the spiral filter element (13) is parallel to the inner bottom wall of the spiral groove (25), and the buckle (24) is movably snap-fitted to the upper end of the spiral guide plate (14), wherein the spiral guide plate (14) surrounds the stirring assembly.

8. The high-efficiency multi-stage sewage treatment device according to claim 7, characterized in that: Both ends of the spiral guide plate (14) are open, the upper spiral end of the spiral filter element (13) is in a closed state, and the lower spiral end is in an open state. A spiral groove is provided on the bottom surface of the spiral guide plate (14), and a spiral strip is fixedly mounted on one end of the buckle (24). The spiral strip is movably mounted on the inner wall of the spiral groove, and the spiral strip can drive the spiral filter element (13) to rotate and slide along the inner wall of the spiral groove (25).

9. The high-efficiency multi-stage sewage treatment device according to claim 8, characterized in that: A right-angle connecting rod (21) is fixedly mounted on the bottom surface of the spiral strip, a movable sleeve disc (17) is fixedly mounted on the horizontal end of the right-angle connecting rod (21), the movable sleeve disc (17) is rotatably arranged on the inner bottom wall of the filter tank (6), the movable sleeve disc (17) can be linked with the stirring assembly, and the vertical end of the right-angle connecting rod (21) is a retractable structure.

10. The high-efficiency multi-stage sewage treatment device according to claim 9, characterized in that: A circular hole is provided in the middle of the movable sleeve disc (17), and electromagnetic blocks (33) are equidistantly provided inside the circular hole of the movable sleeve disc (17). A magnetic attraction block (34) is provided outside the rotating shaft (15), and the magnetic attraction block (34) and the electromagnetic block (33) can be magnetically connected.

Images