A water treatment device for wetland water

Abstract

The present application relates to a kind of water treatment device for wetland water area, including at least one detachable treatment pool, treatment pool is arranged in the water inlet position of wetland water source, for carrying out denitrification to the water body entering wetland;Several biological fillers cages are equipped in the treatment pool, biological fillers cage is parallel to the water flow direction in the treatment pool, and biological fillers cage is filled with denitrification filler;Biological fillers cage includes upper and lower two parts, and the partition is arranged between upper part and lower part, and the partition is parallel to the water flow direction in the treatment pool, and the end of upper part is communicated with the beginning of lower part, and the end of lower part is communicated with the beginning of upper part, so that denitrification filler flows in upper and lower two parts;Denitrification filler in upper part moves along the water flow direction, and denitrification filler in lower part moves against the water flow direction;Rotary device is equipped in upper part, for turning over the filler in cage;Conveying device is equipped in lower part, for pushing denitrification filler to move against water flow.

Description

Technical Field

[0001] This invention belongs to the field of wetland water treatment technology, and specifically relates to a water treatment device for wetland water areas. Background Technology

[0002] my country has a vast area of ​​wetlands, which serve as transitional zones between land and water. These wetlands are areas where the water level is close to the surface or covered by shallow water, typically less than 6 meters deep. There are many types of wetlands, including marshes, peatlands, lakes, rivers, coastal mudflats, paddy fields, reservoirs, and ponds. Wetlands contain both flowing and still water bodies; some are directly connected, while others are blocked by shallow waterways. Therefore, due to these characteristics, the methods and equipment for wetland water treatment differ somewhat from those used in conventional wastewater treatment plants. Summary of the Invention

[0003] The present invention provides a water treatment device for wetland water areas, including at least one detachable treatment tank, which is located at the water inlet of the wetland water source and is used to denitrify the water entering the wetland; the treatment tank is provided with a number of biological packing cages, which are parallel to the water flow direction in the treatment tank, and the biological packing cages are filled with denitrification packing.

[0004] The biological packing cage consists of two parts, an upper and a lower, with a partition between them. The partition is parallel to the water flow direction in the treatment tank. The end of the upper part connects to the beginning of the lower part, and the end of the lower part connects to the beginning of the upper part, allowing the denitrification packing to circulate between the two parts. The denitrification packing in the upper part moves with the water flow direction, while the denitrification packing in the lower part moves against the water flow direction. The upper part is equipped with a rotating device for turning the packing inside the cage, and the lower part is equipped with a conveying device for pushing the denitrification packing against the water flow.

[0005] This invention locates the water treatment at the wetland's water inlet. Due to the complex aquatic environment within wetlands—some areas are disconnected, others have stagnant water—water treatment within the wetland itself cannot treat all the water. Furthermore, some wetlands connect to the ocean, resulting in a vast area from which water cannot be treated. Wetland water sources are often rivers, with relatively concentrated inlet locations, facilitating centralized collection and treatment. This invention establishes a treatment pond at the wetland's water inlet for centralized treatment. After entering the wetland system, the water is purified and regulated by the wetland's own microorganisms, eliminating the need for further specialized treatment.

[0006] Optionally, the treatment tank is square, with the inlet facing the wetland water source and the outlet facing the interior of the wetland. The water flow direction in the treatment tank is parallel to the long side of the treatment tank and points from the inlet to the outlet.

[0007] Optionally, the biological packing cage is cylindrical, with its central axis parallel to the long side of the treatment tank, and several biological packing cages are evenly distributed in a matrix within the treatment tank; the outer wall of the biological packing cage is a mesh with evenly distributed mesh holes.

[0008] The partition is a horizontally arranged rectangle, with the central axis of the partition along its length coinciding with the central axis of the biological packing cage. The two wide sides of the partition are connected to the two circular end faces of the biological packing cage, and the two long sides of the partition are connected to the inner wall of the biological packing cage.

[0009] The upper part begins near the inlet of the treatment tank and ends near the outlet of the treatment tank; the lower part begins near the outlet of the treatment tank and ends near the inlet of the treatment tank.

[0010] Further optionally, the rotating device includes a motor, a rotating shaft, and a plurality of material turning components on the rotating shaft. The motor is located outside one end of the biological packing cage, the output shaft of the motor is connected to one end of the rotating shaft, and the other end of the rotating shaft is rotatably connected to the other end of the biological packing cage.

[0011] The rotating shaft is parallel to the central axis of the biological packing cage and is located in the middle of the upper part; several turning parts are evenly arranged along the length of the rotating shaft.

[0012] Optionally, the turning component is shuttle-shaped, with the diameter of the middle part of the turning component being larger than the diameter of its two tips, and a rotating shaft passing through the two tips of the turning component.

[0013] Further optionally, the partition plate is provided with a number of hollow positions, each hollow position is located between two adjacent turning parts, and the second rotating shaft passes through the middle of all the hollow positions and is parallel to the first rotating shaft;

[0014] A material-forming component is provided on the rotating shaft 2 for each hollow position. The material-forming component includes a semi-circular base and several material-forming plates on the base. One end of the rotating shaft 2 is connected to the output end of the motor 2, which is used to drive each material-forming component to rotate through the rotating shaft 2.

[0015] Optionally, the conveying device is a auger mechanism, which is parallel to the rotating shaft.

[0016] Optionally, the outside of the biological packing cage is provided with several curved guide nets, which are evenly distributed along the circumference of the biological packing cage to intercept sludge on both sides of the guide nets and packing residue flowing out of the biological packing cage; the guide nets protrude outward from the biological packing cage, so that the distance between the two sides of the guide nets and the biological packing cage is smaller than the distance between the middle of the guide nets and the biological packing cage, and there is a gap between the sides of adjacent guide nets to form a water outlet; the guide nets are mesh plates with evenly distributed mesh holes.

[0017] Further optionally, the length direction of the guide net is parallel to the long side of the treatment tank, the guide nets around the same biological packing cage have the same length and width, and the ratio of the distance between the sides of adjacent guide nets (i.e. the width of the water outlet) to the width of the guide net is 1:(3-6).

[0018] Optionally, four adjacent biological packing cages are grouped together, and a rotating shaft is set in the center of each group of biological packing cages. The rotating shaft is parallel to the biological packing cage, with one end of the rotating shaft suspended in the air and the other end connected to a drive motor to drive the rotating shaft to rotate. Several stirring blades are evenly arranged around the rotating shaft. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the water treatment device for wetland water areas;

[0020] Figure 2 This is a schematic diagram of the structure of a biological packing cage;

[0021] Figure 3 This is a side view of the integral component;

[0022] Figure 4 This is a schematic diagram showing the combination of the biological packing cage and the flow guiding net.

[0023] In the attached diagram, 1-treatment tank, 2-biological packing cage, 3-upper part, 4-lower part, 5-partition, 6-rotating device, 7-dragon mechanism, 8-rotating shaft one, 9-rotating shaft two, 10-rotating shaft three, 11-material turning component, 12-water outlet, 13-material balancing component, 14-base, 15-material balancing plate, 16-guide net. Detailed Implementation

[0024] This embodiment provides a water treatment device for wetland water areas, such as... Figures 1-4 As shown, it includes at least one detachable treatment tank 1, which is located at the water inlet of the wetland water source and is used to denitrify the water entering the wetland; the treatment tank 1 is equipped with several biological packing cages 2, which are parallel to the water flow direction in the treatment tank 1 and are filled with denitrification packing.

[0025] The biological packing cage 2 consists of two parts, an upper part 3 and a lower part 4. A partition 5 is provided between the upper part 3 and the lower part 4. The partition 5 is parallel to the water flow direction in the treatment tank 1. The end of the upper part 3 is connected to the beginning of the lower part 4, and the end of the lower part 4 is connected to the beginning of the upper part 3, so that the denitrification packing can circulate between the upper and lower parts. The denitrification packing in the upper part 3 moves with the water flow direction, and the denitrification packing in the lower part 4 moves against the water flow direction. A rotating device 6 is provided in the upper part 3 for turning the packing in the cage. A conveying device is provided in the lower part 4 for pushing the denitrification packing to move against the water flow.

[0026] Optionally, the treatment tank 1 is square, with the inlet of the treatment tank 1 facing the wetland water source and the outlet facing the interior of the wetland. The water flow direction in the treatment tank 1 is parallel to the long side of the treatment tank 1 and points from the inlet to the outlet.

[0027] The bottom of treatment pond 1 can utilize the natural water surface at the junction of the river and the wetland, eliminating the need for additional bottom construction. Treatment pond 1 includes four side walls connected end to end. When the water quality of the wetland's inflow is good, treatment pond 1 can be removed to avoid restricting the wetland's inflow. When the water quality deteriorates, treatment pond 1 can be constructed to treat the inflow.

[0028] The amount of denitrifying packing material in the biological packing cage 2 is adjusted according to the influent water quality. The water flow in treatment tank 1 is unidirectional. Under the influence of this unidirectional flow, the denitrifying packing material in the biological packing cage 2 will continuously accumulate towards one end of the cage. During this accumulation process, dead zones and channeling can easily occur, leading to insufficient contact between the water and the denitrifying packing material, resulting in decreased treatment efficiency. Furthermore, if the packing material in the cage is piled up too compactly under the influence of water flow, the internal resistance of the packing material will be high, and the water will preferentially flow through the outside of the cage, resulting in low utilization of the packing material. Additionally, river water generally contains river mud, and there is also river mud inside treatment tank 1. Some of this river mud enters the biological packing cage 2 and is filtered by the packing material on the outside of the cage, easily causing clogging of that portion of the packing material. To address these problems, this invention proposes dividing the biological packing cage 2 into upper and lower parts, allowing the denitrifying packing material to circulate within both parts.

[0029] Optionally, the biological packing cage 2 is cylindrical, with its central axis parallel to the long side of the treatment tank 1, and several biological packing cages 2 are evenly distributed in a matrix within the treatment tank 1; the outer walls of the biological packing cages 2 are all mesh sheets with evenly distributed mesh holes to prevent the loss of the denitrification packing inside.

[0030] The partition 5 is a horizontally arranged rectangle. The central axis of the partition 5 in the length direction coincides with the central axis of the biological packing cage 2. The two wide sides of the partition 5 are connected to the two circular end faces of the biological packing cage 2, and the two long sides of the partition 5 are connected to the inner wall of the biological packing cage 2.

[0031] The beginning of the upper part 3 is close to the inlet of the treatment tank 1, and the end is close to the outlet of the treatment tank 1; the beginning of the lower part 4 is close to the outlet of the treatment tank 1, and the end is close to the inlet of the treatment tank 1.

[0032] Further optionally, the rotating device 6 includes a motor, a rotating shaft 8, and a plurality of material turning parts 11 on the rotating shaft 8. The motor is located outside one end of the biological packing cage 2. The output shaft of the motor is connected to one end of the rotating shaft 8, and the other end of the rotating shaft 8 is rotatably connected to the other end of the biological packing cage 2.

[0033] The rotating shaft 8 is parallel to the central axis of the biological packing cage 2 and is located in the middle of the upper part 3; several turning parts 11 are evenly arranged along the length of the rotating shaft 8.

[0034] Optionally, the turning component 11 is spindle-shaped, with the diameter of the middle part of the turning component 11 being larger than the diameter of its two tips, and the rotating shaft 8 passing through the two tips of the turning component 11.

[0035] Further optionally, the partition plate 5 is provided with a number of hollow positions, each hollow position is located between two adjacent turning parts 11, and the second rotating shaft 9 passes through the middle of all hollow positions and is parallel to the first rotating shaft 8.

[0036] A material-forming component 13 is provided on the rotating shaft 9 at the position corresponding to each hollowed-out position. The material-forming component 13 includes a semi-circular base 14 and several material-forming plates 15 on the base 14. One end of the rotating shaft 9 is connected to the output end of the motor 2, which is used to drive each material-forming component 13 to rotate. The motor 2 and the motor 1 are respectively located at both ends of the biological packing cage 2, and the two do not interfere with each other. The rotating shaft 9 passes through the interior of the partition 5.

[0037] Alternatively, several material plates 15 are evenly distributed along the circumference of the base 14, with two adjacent material plates 15 having different lengths, and a shorter material plate 15 is placed between two longer material plates 15; the material-forming component 13 can rotate back and forth between the upper part 3 and the lower part 4 of the biological packing cage 2 under the drive of the rotating shaft 2 9.

[0038] Optionally, the conveying device is a auger mechanism 7, which is parallel to the rotating shaft 8. The edge of the spiral blades of the auger mechanism 7 can contact the lowest point of the bottom surface of the lower part 4 of the biological packing cage 2, and the edge of the spiral blades of the auger mechanism 7 does not bump against the lower surface of the partition 5. The drive motor of the auger mechanism 7 can be equipped with a separate electrode 3, or it can share a motor 1 with the rotating shaft 8. For example, a drive gear can be provided near the end of the rotating shaft 8, and a driven gear can be provided at the end of the main shaft of the auger mechanism 7. The drive gear meshes with the drive gear, so that the motor 1 drives the rotating shaft 8 and the auger mechanism 7 to rotate together.

[0039] Optionally, brushes are evenly distributed on the inner wall of the biological packing cage 2 and on the upper and lower surfaces of the partition 5, with the brushes facing the inside of the biological packing cage 2, for cleaning the packing material near the inner wall of the biological packing cage 2 and the partition 5.

[0040] This invention divides the biological packing cage 2 into upper and lower parts, with the two ends connected to each other. The denitrification packing material in the upper part 3 flows with the water from the inlet to the outlet. As the packing material moves closer to the outlet, it enters the lower part 4, where, under the action of the auger mechanism 7, it comes into counter-current contact with the water flow. The denitrification packing material then moves from the outlet to the inlet, and as it moves closer to the inlet, it re-enters the upper part 3, flowing with the water flow once more. In this way, the denitrification packing material within the biological packing cage 2 forms a form similar to a moving bed, ensuring full contact with the water and improving water treatment efficiency.

[0041] In the upper part 3, the utilization rate of the packing material near the cage wall and far from the cage wall differs under natural flow conditions. The rotating device 6, in conjunction with the material-forming component 13, flips the packing material inside the upper part 3 to the outside. Then, after being disordered by the material-forming component 13, the packing material returns to the upper part 3. Specifically, the water flow carries the denitrification packing material to a turning component 11. The diameter of the turning component 11 first increases and then decreases, causing the packing material to move along the gradually increasing wall of the turning component 11 towards the inner wall of the upper part 3 and the upper surface of the partition 5. This allows the packing material closer to the inside of the upper part 3 to move outwards. After passing the point of maximum diameter of the turning component 11, the packing material begins to converge inwards again. At this time, the material-forming component 13 rotates under the drive of the rotating shaft 9, and the base 14 drives several material-forming plates 15 to rotate, preferably alternating between forward and reverse rotation. The material-forming plates 15 of varying lengths disturb the packing material that is about to converge inwards, disrupting the original outer-inner order of the packing material, i.e., homogenizing it. Then, the packing material moves inwards along the gradually contracting wall of the turning component 11 towards the upper part 3, achieving a reverse inversion and homogenization of the packing material in the upper part 3. During the turning process, the packing material can be cleaned by the brushes on the upper surface of the partition 5 and the inner wall of the cage, and broken packing debris can also flow out of the biological packing cage 2.

[0042] When the deammonia removal packing moves counter-currently in the lower part 4, under the action of gravity, most of the packing may be close to the lower middle part of the lower part 4 of the biological packing cage 2, thus being driven by the auger mechanism 7. At the same time, it can also realize the reversal of the inner and outer packing, and be cleaned by the brushes on the lower surface of the partition plate 5 and the inner wall of the cage. Broken packing debris can also flow out of the biological packing cage 2. When the material-forming plate 15 on the base 14 rotates, it can rotate between the upper part 3 and the lower part 4 through the hollowed-out position. When the material-forming component 13 rotates, it may drive a small amount of packing back and forth between the upper and lower parts 4. However, due to the obstruction effect of the material-forming plate 15 and the effects of water flow and buoyancy, the amount of packing in this series is not large. It is also necessary to control the forward and reverse rotation of the motor 2 to prevent the material-forming plate 15 from rotating completely into the lower part 4 and touching the spiral blades of the auger mechanism 7.

[0043] Optionally, the outside of the biological packing cage 2 is provided with several curved guide nets 16. The several guide nets 16 are evenly distributed along the circumference of the biological packing cage 2 to intercept the sludge on both sides of the guide nets 16 and the packing residue flowing out of the biological packing cage 2. The guide nets 16 protrude outward from the biological packing cage 2, so that the distance between the two sides of the guide nets 16 and the biological packing cage 2 is smaller than the distance between the middle of the guide nets 16 and the biological packing cage 2. There is a gap between the sides of adjacent guide nets 16 to form a water outlet. The guide nets 16 are mesh plates with evenly distributed mesh holes.

[0044] Further optionally, the length direction of the guide net 16 is parallel to the long side of the treatment tank 1, the guide nets 16 around the same biological packing cage 2 have the same length and width, and the ratio of the distance between the sides of adjacent guide nets 16 (i.e. the width of the water outlet) to the width of the guide net 16 is 1:(3-6).

[0045] The length of the flow guide net 16 can be equal to or less than the length of the corresponding biological packing cage 2. This is equivalent to arranging several flow guide nets 16 along the length direction of the biological packing cage 2. Adjacent flow guide nets 16 can have a certain interval along the length direction of the biological packing cage 2.

[0046] Optionally, four adjacent biological packing cages 2 are grouped together. A rotating shaft 3 10 is set in the center of each group of biological packing cages 2. The rotating shaft 3 10 is parallel to the biological packing cage 2. One end of the rotating shaft 3 10 is suspended in the air, and the other end is connected to a drive motor to drive the rotating shaft 3 10 to rotate. Several stirring blades are evenly arranged around the rotating shaft 3 10.

[0047] The drive motor can be located inside or outside the treatment tank 1. The number, size, and shape of the stirring blades are adjusted according to the diameter and spacing of the biological packing cages 2 in the same group and the dimensions of the treatment tank 1. For biological packing cages 2 located near the sides and bottom of the treatment tank 1, the side facing the side or bottom of the treatment tank 1 does not have a rotating shaft 10.

[0048] In water treatment applications, the denitrification packing material generates some packing debris due to impact and wear. As the rotating device 6 rotates and the water flow washes over it, the packing debris flows out of the biological packing cage 2. In addition, fine river mud in the water also flows back and forth inside and outside the biological packing cage 2. The rotating shaft 10 described in this invention is located in the center of the area between the four biological packing cages 2, playing a stirring role. At the same time, the river water in this area is diffused to the surrounding guide nets 16 under the action of centrifugal force generated by stirring. Due to the obstruction effect of the guide nets 16, the river water thrown out mainly enters the biological packing cage 2 through the water outlet. Moreover, due to the special shape and arrangement of the guide nets 16, the space formed by the two adjacent guide nets 16 at the water outlet is wider at the outside and narrower at the inside. The flow velocity of the river water through the water outlet also gradually increases, which can counteract the outward flow of the river water inside the biological packing cage 2 and the guide nets 16. This allows the river water inside the biological packing cage 2 and the guide nets 16 to carry packing debris and river mud through the guide nets 16 for filtration and then flow outward. The packing debris and river mud are intercepted by the guide nets 16, thus forming the water flow pattern inside and outside the biological packing cage 2.

[0049] Using the guide net 16 as a carrier and packing debris as a core, flocculent river mud gradually envelops the core under the action of water flow, growing larger to form granular biological carrier embryos. When the biological carrier embryos are large enough, they can detach from the guide net 16 under their own weight, flow with the water flow, and continue to carry river mud and grow. By designing the mesh size of the sidewall of the biological packing cage 2, large-particle mature biological carrier embryos are prevented from entering the biological packing cage 2. These biological carrier embryos will eventually flow with the water flow to the outlet, where they can be collected by filtration and used for microbial cultivation and biofilm formation, becoming biological carriers for the biological treatment of other wastewater. Alternatively, microbial inoculum (such as aerobic microorganisms) can be added to the treatment tank 1 to cultivate biological carriers in situ. The biological carriers are then retained at the outlet and added back to the vicinity of the inlet for biological treatment of the water.

[0050] The denitrification packing is a conventional autotrophic denitrification packing, such as the autotrophic denitrification packing particles provided in patent CN202311277231.2.

Claims

1. A water treatment device for use in wetland water areas, characterized in that The application relates to a denitrification device for wetland water source, which comprises at least one detachable treatment pool arranged at the water inlet position of the wetland water source and used for denitrification treatment of water entering the wetland; a plurality of biological filler cages are arranged in the treatment pool and parallel to the water flow direction in the treatment pool; and denitrification fillers are filled in the biological filler cages. The biological filler cage comprises upper and lower parts, a partition plate is arranged between the upper and lower parts and parallel to the water flow direction in the treatment pool, the end of the upper part is communicated with the beginning of the lower part, the end of the lower part is communicated with the beginning of the upper part, so that the denitrification fillers flow in the upper and lower parts; the denitrification fillers in the upper part move along the water flow direction, and the denitrification fillers in the lower part move against the water flow direction; a rotating device is arranged in the upper part and used for turning over the fillers in the cage; and a conveying device is arranged in the lower part and used for pushing the denitrification fillers to move against the water flow. The rotating device comprises a motor, a rotating shaft and a plurality of turning-over components on the rotating shaft; the motor is arranged outside one end of the biological filler cage; the output shaft of the motor is connected with one end of the rotating shaft; and the other end of the rotating shaft is rotationally connected with the other end of the biological filler cage. The rotating shaft is parallel to the central shaft of the biological filler cage and located in the middle of the upper part; and the plurality of turning-over components are uniformly arranged along the length direction of the rotating shaft. The turning-over component is shuttle-shaped, the diameter of the middle part of the turning-over component is larger than the diameter of the two pointed ends, and the rotating shaft penetrates through the two pointed ends of the turning-over component. A plurality of hollowed-out positions are arranged on the partition plate, each hollowed-out position is between two adjacent turning-over components, a rotating shaft penetrates through the middle parts of all the hollowed-out positions and is parallel to the rotating shaft. An integral component is arranged on the rotating shaft corresponding to each hollowed-out position, the integral component comprises a semicircular base and a plurality of integral plates on the base, one end of the rotating shaft is connected with the output end of a motor, and the rotating shaft is used for driving the integral components to rotate.

2. The water treatment device for wetland water areas as claimed in claim 1, characterized in that, The treatment pool is square, the water inlet of the treatment pool faces the wetland water source, the water outlet faces the inside of the wetland, the water flow direction in the treatment pool is parallel to the long side of the treatment pool and points from the water inlet to the water outlet.

3. The water treatment device for wetland water areas as claimed in claim 2, characterized in that The biological filler cage is cylindrical, the central shaft is parallel to the long side of the treatment pool, and a plurality of biological filler cages are uniformly distributed in the treatment pool in a matrix form; the outer wall of the biological filler cage is a mesh, and the mesh is uniformly and densely provided with mesh holes. The partition plate is horizontally arranged and rectangular, the central shaft of the length direction of the partition plate is coincident with the central shaft of the biological filler cage, the two wide sides of the partition plate are connected with the two circular end faces of the biological filler cage, and the two long sides of the partition plate are connected with the inner wall of the biological filler cage. The beginning of the upper part is close to the water inlet of the treatment pool, and the end is close to the water outlet of the treatment pool; the beginning of the lower part is close to the water outlet of the treatment pool, and the end is close to the water inlet of the treatment pool.

4. The water treatment device for wetland water bodies of claim 1, wherein, The conveying device is a dragon mechanism, and the dragon mechanism is parallel to the rotating shaft.

5. The water treatment device for wetland water bodies of claim 1, wherein, The outer part of the biological filler cage is provided with several flow guide nets with curvature, which are uniformly distributed along the circumference of the biological filler cage and used for intercepting sludge on both sides of the flow guide nets and filler residues flowing out of the biological filler cage; the flow guide nets protrude towards the outside of the biological filler cage, so that the distance between the flow guide nets on both sides and the biological filler cage is smaller than the distance between the middle part of the flow guide nets and the biological filler cage, and the side edges of adjacent flow guide nets have a distance to form a water passage; the flow guide nets are net plates and are uniformly covered with mesh holes.

6. The water treatment device for wetland water areas as claimed in claim 5, characterized in that The length direction of the flow guide nets is parallel to the long side of the treatment tank, the length and width of the flow guide nets around the same biological filler cage are the same, and the ratio of the distance between the side edges of adjacent flow guide nets and the width of the flow guide nets is 1:(3-6).

7. The water treatment device for wetland water areas as claimed in claim 6, characterized in that Four adjacent biological filler cages form a group, a rotating shaft three is arranged at the center of each group of biological filler cages, the rotating shaft three is parallel to the biological filler cage, one end of the rotating shaft three is suspended, the other end is connected with a driving motor to drive the rotating shaft three to rotate, and several stirring blades are uniformly arranged around the rotating shaft three.

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