A sewage purification treatment device

Abstract

The present application belongs to the technical field of sewage purification treatment, and relates to a sewage purification treatment equipment. The present application comprises a pool body, a filtering mechanism comprising a fixed spiral shell and a movable spiral shell fixed in the pool body, the fixed spiral shell and the movable spiral shell having the same structure, and the fixed spiral shell and the movable spiral shell being both filled with filter material. In the sewage treatment state, the movable spiral shell is superimposed with the fixed spiral shell, and sewage flows through the filter material to achieve purification. In the flushing state, the movable spiral shell is moved to above the fixed spiral shell and is butted with the fixed spiral shell to form a continuous spiral line body, a spiral cleaner is embedded in the spiral gap, clean water is sprayed on the filter material through the spiral cleaner, and dirty water after flushing is discharged along a spiral path for a short distance through a dirty water spiral channel. The present application solves the problems of attenuation of flushing force with filter layer thickness and long migration path of pollutants in traditional backwashing, and has the advantages of uniform flushing, water saving and high cleaning efficiency.

Description

Technical Field

[0001] This invention belongs to the field of wastewater purification and treatment technology, and relates to a wastewater purification and treatment device. Background Technology

[0002] An aerated biological filter is a device that uses biological processes to treat wastewater. During operation, wastewater flows through a biological filter media layer. The aerobic biofilm attached to the surface of the filter media biodegrades organic matter, while the filter media and its biofilm remove suspended solids through interception and adsorption, thus purifying the wastewater.

[0003] In practical engineering, suitable filter media should increase the contact efficiency between the biofilm and wastewater, thus promoting biofilm formation. To ensure treatment effectiveness, the biological filter media layer is usually set relatively thick to increase the total amount of biofilm and contact efficiency, thereby improving purification capacity. However, after long-term operation, suspended solids are trapped, and aged biofilm detaches and clogs the gaps in the filter media, leading to a decrease in the filter's water flow capacity or even blockage. Wastewater and oxygen cannot pass through smoothly, at which point the biological filter media needs to be backwashed to restore its treatment capacity.

[0004] When backwashing biological filter media using water flushing, the scouring force of the water flow gradually weakens as the filter layer thickness increases. This results in the bottom layer of biological filter media experiencing the least scouring disturbance, leading to a significantly lower cleaning effect compared to the upper layers and poor overall cleaning and regeneration of the filter layer. During backwashing, impurities washed off from the filter media gradually move downwards with the water flow. Due to the thickness of the filter layer, pollutants released from the top layer must travel through the entire filter layer to be discharged, resulting in a long migration path. Therefore, a large amount of backwash water and a long backwashing time are required to clean the entire filter layer, leading to water waste and low cleaning efficiency.

[0005] To address the above problems, this invention proposes a wastewater purification and treatment device. Summary of the Invention

[0006] To address the problems existing in the background art, the present invention proposes a wastewater purification and treatment device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a sewage purification treatment device, comprising a tank body, wherein a filtration mechanism and a flushing mechanism are provided in the tank body, the filtration mechanism comprising a fixed spiral shell and a movable spiral shell fixed in the tank body, both the fixed spiral shell and the movable spiral shell being filled with filter media; a first driving component is provided in the tank body to drive the movable spiral shell to move and rotate;

[0008] The rinsing mechanism includes a spiral cleaner, and a second drive assembly for driving the spiral cleaner to move and rotate is installed in the pool body;

[0009] The filtration mechanism has a wastewater treatment state and a flushing state:

[0010] In the wastewater treatment state, the movable spiral shell is embedded in the spiral gap of the fixed spiral shell;

[0011] In the rinsing state, the movable spiral shell moves out of the fixed spiral shell, and the end of the movable spiral shell aligns with the end of the fixed spiral shell, so that the movable spiral shell and the fixed spiral shell form a continuous spiral body; the second drive assembly drives the spiral cleaner to move spirally and embed into the spiral gap of the spiral body, and the clean water in the spiral cleaner flows out and passes through the filter mechanism to rinse the filter media.

[0012] Furthermore, the spiral cleaner includes a second spiral side plate, a spiral water distribution plate, and a spiral partition plate, wherein the second spiral side plate, the spiral water distribution plate, and the spiral partition plate together form a clean water spiral channel; the spiral water distribution plate and the spiral partition plate are fixedly connected between the two second spiral side plates.

[0013] Furthermore, in the rinsing state, the spiral baffle, the second spiral side plate, and the filter mechanism together form a dirty water spiral channel, and the dirty water after rinsing enters the dirty water spiral channel.

[0014] Furthermore, the movable spiral shell includes two first spiral side plates and two spiral filter media baffles. The two first spiral side plates and the two spiral filter media baffles together form a spiral cavity for accommodating the filter media. The mesh size of the spiral filter media baffles is smaller than the particle size of the filter media.

[0015] Furthermore, the first drive assembly includes a first electrically controlled slide rail, a first annular slide block, and a first electric rotating drum. The first electrically controlled slide rail is disposed in the pool body, the first annular slide block is slidably mounted on the first electrically controlled slide rail, the first electric rotating drum is rotatably mounted on the first annular slide block, and the movable spiral shell is fixedly connected to the first electric rotating drum.

[0016] Furthermore, the second drive assembly includes a second electrically controlled slide rail, a second annular slide block, and a second electric rotating drum. The second electrically controlled slide rail is disposed in the pool body, the second annular slide block is slidably mounted on the second electrically controlled slide rail, the second electric rotating drum is rotatably mounted on the second annular slide block, and the spiral cleaner is fixedly connected to the second electric rotating drum.

[0017] Furthermore, the rinsing mechanism also includes a piping assembly for supplying water to the spiral cleaner. The piping assembly includes a first annular pipe, a second annular pipe, an arc-shaped connecting pipe connecting the first annular pipe and the spiral cleaner, and a water pipe connected to the second annular pipe. The second annular pipe is connected to the first annular pipe. The second annular pipe is slidably disposed in the pool body, and the first annular pipe and the second annular pipe are rotatably connected.

[0018] Furthermore, a backwash drain pipe is connected to the bottom of the pool, and a valve is installed on the backwash drain pipe.

[0019] Furthermore, a water distributor is installed on the inner bottom side of the pool.

[0020] Compared with existing technologies, the present invention has the following advantages: During rinsing, the movable spiral shell and the fixed spiral shell form a spiral body, and the spiral cleaner is embedded in the spiral gap of the spiral body, distributing water evenly along the entire spiral path. Regardless of the height of the filter media, the water flow scouring force is the same, avoiding the problem of the scouring force decreasing with the increase of filter layer thickness in traditional backwashing, and solving the defect that the cleaning effect of the bottom filter media is lower than that of the upper layer.

[0021] When the spiral cleaner is embedded in the spiral gap of the spiral body, a dirty water spiral channel is formed between it and the spiral body. Dirty water discharged from each layer of the spiral body can enter the dirty water spiral channel nearby and be discharged along the dirty water spiral channel, without the dirty water needing to pass through the entire filtration mechanism. The migration path of the dirty water discharged from each layer of the spiral body is the same and short, reducing the amount of water and time required for backwashing, thus achieving the dual purpose of water conservation and improved cleaning efficiency. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the invention in the first position when it is in the sewage treatment state;

[0023] Figure 2 This is a cross-sectional view of the invention in a second position when it is in the wastewater treatment state;

[0024] Figure 3 This is a schematic diagram of the internal structure of the tank when the present invention is in the sewage treatment state;

[0025] Figure 4 This is a schematic diagram of the structure of the fixing rod in this invention;

[0026] Figure 5 This is a schematic diagram of the filtration mechanism in the wastewater treatment state of the present invention from a first-view perspective;

[0027] Figure 6 This is a schematic diagram of the filtration mechanism in the wastewater treatment state of the present invention from a second perspective.

[0028] Figure 7 This is a schematic diagram of the structure for fixing the top of the spiral shell in this invention;

[0029] Figure 8 This is a schematic diagram of the structure for fixing the bottom of the spiral shell in this invention;

[0030] Figure 9 This is a schematic diagram of the structure of the top of the movable spiral shell in this invention;

[0031] Figure 10 This is a schematic diagram of the structure of the bottom of the movable spiral shell in this invention;

[0032] Figure 11 This is a cross-sectional schematic diagram of the fixed spiral shell and the movable spiral shell in this invention;

[0033] Figure 12 This is a schematic diagram of the top structure of the rinsing mechanism in this invention;

[0034] Figure 13 This is a schematic diagram of the bottom structure of the rinsing mechanism in this invention;

[0035] Figure 14 This is a schematic diagram of the structure of the top of the spiral cleaner in this invention;

[0036] Figure 15 This is a schematic diagram of the bottom structure of the spiral cleaner in this invention;

[0037] Figure 16 This is a cross-sectional view of the spiral cleaner in this invention;

[0038] Figure 17 This is a cross-sectional view of the spiral cleaner in this invention;

[0039] Figure 18 This is a schematic diagram showing the state of the movable spiral shell moving out of the fixed spiral shell in this invention;

[0040] Figure 19 This is a schematic diagram of the internal structure of the pool body when the movable spiral shell and the fixed spiral shell of the present invention form a spiral body;

[0041] Figure 20 This is a schematic diagram of the filter mechanism when the movable spiral shell and the fixed spiral shell of the present invention form a spiral body;

[0042] Figure 21 This is a schematic diagram of the structure of the present invention in the rinsing state;

[0043] Figure 22 This is a schematic diagram showing the spiral cleaner embedded in the spiral body when the present invention is in the rinsing state;

[0044] Figure 23This is a schematic diagram showing the interaction between the spiral cleaner and the fixed spiral shell when the present invention is in the rinsing state;

[0045] Figure 24 This is a cross-sectional view of the spiral cleaner and filter mechanism of the present invention in the rinsing state.

[0046] In the diagram: 1. Tank body; 2. Backwash drain pipe; 3. Valve; 4. Outlet pipe; 5. Water distributor; 6. Aerator; 7. Fixed spiral shell; 8. Movable spiral shell; 801. First spiral side plate; 802. Spiral filter media baffle; 9. First electric rotating drum; 10. Filter media; 11. Fixed rod; 12. First electrically controlled slide rail; 13. First annular slide block; 14. Second electrically controlled slide rail; 15. Second annular slide block; 16. Second electric rotating drum; 17. Spiral cleaner; 1701. Second spiral side plate; 1702. Spiral water distribution plate; 1703. Spiral baffle; 18. Arc-shaped connecting pipe; 19. First annular pipe; 20. Second annular pipe; 21. Vertical chute; 22. Water pipe; 23. Clean water spiral channel; 24. Dirty water spiral channel. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Example 1: As Figures 1-24 As shown, the technical solution adopted by the present invention is as follows: a sewage purification treatment device includes a pool body 1, a filtration mechanism and a flushing mechanism disposed in the pool body 1.

[0049] like Figure 1 As shown, a water distributor 5 and an aerator 6 are fixedly connected to the bottom of the tank body 1. The water distributor 5 is used to evenly inject the sewage to be treated into the tank body 1, and the aerator 6 is used to introduce air into the tank body 1.

[0050] A water outlet pipe 4 is fixedly connected to the pool body 1, which is used to discharge purified water during sewage treatment.

[0051] A backwash drain pipe 2 is fixedly connected to the bottom of the pool body 1. A valve 3 is installed inside the backwash drain pipe 2 to discharge the dirty water after backwashing.

[0052] The filtration mechanism includes a fixed spiral shell 7 and a movable spiral shell 8. The fixed spiral shell 7 is fixedly connected to the inner wall of the tank body 1. The movable spiral shell 8 has the same structure as the fixed spiral shell 7, and the spiral parameters of both are the same.

[0053] like Figure 11 As shown, both the fixed spiral shell 7 and the movable spiral shell 8 are formed by two first spiral side plates 801 and two spiral filter media baffles 802 fixedly connected to each other. The two first spiral side plates 801 and the two spiral filter media baffles 802 together form a spiral cavity. End baffles (not shown in the figure) are fixedly connected to both ends of this spiral cavity. The spiral cavity is filled with filter media 10. The two first spiral side plates 801 and the two end baffles are solid plates. The mesh size of the spiral filter media baffles 802 is smaller than the particle size of the filter media 10, thus allowing water to pass through but preventing the filter media 10 from leaking out. In this embodiment, the filter media 10 is biological filter media.

[0054] Specifically, the filter media 10 can be one or more of the following: ceramsite, zeolite, activated carbon, volcanic rock, and quartz sand. It can also be a hollow spherical or cylindrical suspended packing material made of polyethylene or polypropylene. A highly active aerobic biofilm is attached to the surface of the filter media 10.

[0055] A fixing rod 11 is vertically installed inside the pool body 1. The fixing rod 11 extends along the central axis of the pool body 1, and the bottom end of the fixing rod 11 is fixedly connected to the bottom of the pool body 1.

[0056] A first drive assembly is provided inside the pool body 1. The first drive assembly is used to drive the movable spiral shell 8 to move and rotate along the fixed rod 11.

[0057] Specifically, the first drive assembly includes a first electrically controlled slide rail 12, a first annular slide block 13, and a first electrically driven rotary drum 9.

[0058] The first electrically controlled slide rail 12 is mounted on the fixed rod 11, and the first annular slide block 13 is slidably mounted on the first electrically controlled slide rail 12. The first electrically controlled slide rail 12 drives the first annular slide block 13 to move up and down along the fixed rod 11. The first electric rotary drum 9 is rotatably mounted on the first annular slide block 13. The movable spiral shell 8 is fixedly connected to the first electric rotary drum 9.

[0059] When the first electrically controlled slide rail 12 drives the first annular slide block 13 to slide up and down along the fixed rod 11, and at the same time the first electric rotary drum 9 drives the movable spiral shell 8 to rotate around the fixed rod 11, the movable spiral shell 8 can move along the spiral trajectory. This allows the movable spiral shell 8 to pass through the spiral gap of the fixed spiral shell 7 without interference.

[0060] It should be noted that the first electric rotating drum 9 has a certain axial length, which is greater than the length of the first electrically controlled slide rail 12. This ensures that as the first electric rotating drum 9 and the first annular slide block 13 move up and down along the fixed rod 11, the first electric rotating drum 9 always covers the outside of the first electrically controlled slide rail 12, thereby preventing the first electrically controlled slide rail 12 from contacting the sewage in the tank 1, effectively protecting the first electrically controlled slide rail 12 and extending its service life.

[0061] In this embodiment, the rotation drive method of the first electric rotary drum 9 is as follows: a first gear ring is fixedly connected to the inner side of the first electric rotary drum 9, a first drive motor is fixedly connected to the first electrically controlled slide rail 12, and a first drive gear is fixedly connected to the output shaft of the first drive motor. The first drive gear meshes with the first gear ring. When the first drive motor is started, the first drive gear drives the first gear ring to rotate, and the first gear ring drives the first electric rotary drum 9 to rotate relative to the first electrically controlled slide rail 12.

[0062] The filtration system has two states: wastewater treatment and flushing.

[0063] In the state of wastewater treatment, such as Figures 1 to 3 As shown, the movable spiral shell 8 is located within the spiral gap of the fixed spiral shell 7 and overlaps with the fixed spiral shell 7 vertically. Specifically, as... Figure 5 As shown, the fixed spiral shell 7 and the movable spiral shell 8 form a columnar body. In this state, the wastewater to be treated is discharged into the tank 1 through the distributor 5, while the aerator 6 is turned on for aeration. The wastewater flows from bottom to top through the filter media 10 inside the fixed spiral shell 7 and the movable spiral shell 8. The highly active biofilm attached to the surface of the filter media 10 aerobically decomposes the organic matter in the wastewater under the oxygen supply of the aerator 6. At the same time, the filter media 10 and its biofilm remove suspended solids from the wastewater through mechanical interception and adsorption. The purified water after being treated by the filter media 10 is discharged from the outlet pipe 4.

[0064] When the gaps between the filter media 10 are blocked by trapped particles and detached biofilm, and backwashing of the filter media 10 is required, the filtration mechanism is switched from the sewage treatment state to the flushing state.

[0065] When switching to the flushing state, first stop the water supply to the distributor 5, close the aerator 6, and open the valve 3. Then, start the first drive assembly, causing the movable spiral shell 8 to move upward along the spiral trajectory within the spiral gap of the fixed spiral shell 7. Specifically, the first electrically controlled slide rail 12 drives the first annular slide block 13 to move the first electric rotating drum 9 and the movable spiral shell 8 upward along the fixed rod 11. At the same time, the first electric rotating drum 9 drives the movable spiral shell 8 to rotate around the fixed rod 11, causing the movable spiral shell 8 to rise along the spiral trajectory. When the bottom end of the movable spiral shell 8 rises to the same horizontal plane as the top end of the fixed spiral shell 7, close the first electrically controlled slide rail 12. At this time, the movable spiral shell 8 has completely moved out of the spiral gap of the fixed spiral shell 7 and is located directly above the fixed spiral shell 7. Figure 18 As shown.

[0066] Next, the first electric rotating drum 9 is controlled to drive the movable spiral shell 8 to rotate in the opposite direction around the fixed rod 11 until the bottom end of the movable spiral shell 8 and the top end of the fixed spiral shell 7 are aligned and in contact in the circumferential position, forming a head-to-tail connection. At this time, as... Figure 19 and Figure 20 As shown, the movable spiral shell 8 and the fixed spiral shell 7 together form a continuous spiral body. At this point, the filter mechanism enters the rinsing state.

[0067] The rinsing mechanism includes a spiral cleaner 17. The spiral diameter, pitch, helix angle, and direction of rotation of the spiral cleaner 17 are the same as those of the fixed spiral housing 7 (and the movable spiral housing 8). The number of spiral turns of the spiral cleaner 17 is equal to the sum of the number of spiral turns of the fixed spiral housing 7 and the movable spiral housing 8. The starting end of the spiral cleaner 17 matches the starting position of the spiral gap of the continuous spiral body formed by the fixed spiral housing 7 and the movable spiral housing 8.

[0068] like Figure 17 As shown, the spiral cleaner 17 includes two second spiral side plates 1701, a spiral water distribution plate 1702, and a spiral partition 1703. The spiral water distribution plate 1702 and the spiral partition 1703 are fixedly connected between the two second spiral side plates 1701. Both second spiral side plates 1701 are spiral-shaped solid plates, arranged opposite each other, located on both sides of the spiral cleaner 17 in the width direction. The two second spiral side plates 1701 extend parallel to the spiral path. Since both second spiral side plates 1701 are solid plates, their function is to seal the clean water spiral channel 23 from both sides, preventing clean water from leaking from the sides.

[0069] The spiral water distribution plate 1702 is fixedly connected between the bottoms of the two second spiral side plates 1701 and extends continuously along the spiral path. The spiral water distribution plate 1702 is located on the bottom surface of the spiral cleaner 17, and its width is equal to the distance between the two second spiral side plates 1701. The spiral water distribution plate 1702 has multiple water distribution holes evenly distributed on it, or it can be made of a porous permeable material (such as a porous ceramic plate, sintered metal plate, or filter screen plate) to allow water to pass through.

[0070] The spiral baffle 1703 is a solid spiral plate, fixedly connected between the two second spiral side plates 1701, and located above the spiral water distribution plate 1702. The spiral baffle 1703 also extends continuously along the spiral path, and its width is equal to the distance between the two second spiral side plates 1701.

[0071] Two second spiral side plates 1701, a spiral water distribution plate 1702, and a spiral partition 1703 together form a clear water spiral channel 23. After external clear water enters the clear water spiral channel 23, it flows along the spiral path and fills the entire clear water spiral channel 23, and flows out through the spiral water distribution plate 1702 under pressure.

[0072] The top of the second spiral side plate 1701 is higher than the spiral partition 1703, so that the upper surface of the spiral partition 1703 and the second spiral side plate 1701 form a dirty water spiral channel 24.

[0073] A second drive assembly is installed inside the pool body 1. The second drive assembly drives the spiral cleaner 17 to move along the fixed rod 11 while rotating, thus performing spiral motion.

[0074] The second drive assembly includes a second electrically controlled slide rail 14, a second annular slide block 15, and a second electrically driven drum 16. The second electrically controlled slide rail 14 is mounted on the upper part of the fixed rod 11 and is arranged along the axial direction of the fixed rod 11. Its length is determined according to the required vertical travel of the spiral cleaner 17. The second annular slide block 15 is slidably mounted on the fixed rod 11, and the second electrically controlled slide rail 14 drives the second annular slide block 15 to reciprocate. The second electrically driven drum 16 is rotatably mounted on the second annular slide block 15. The second electrically driven drum 16 has a cylindrical structure, is sleeved on the outside of the fixed rod 11, and can rotate relative to the second annular slide block 15 about the axis of the fixed rod 11.

[0075] The spiral cleaner 17 is fixedly connected to the second electric rotating drum 16. Specifically, the upper inner edge of the spiral cleaner 17 is fixedly connected to the outer wall of the second electric rotating drum 16. When the second electric rotating drum 16 rotates, the spiral cleaner 17 rotates synchronously. When the second annular slide 15 slides up and down along the second electrically controlled slide rail 14, the second electric rotating drum 16 and the spiral cleaner 17 move up and down synchronously.

[0076] The rotation drive method of the second electric rotary drum 16 is as follows: a second gear ring is fixedly connected to the inner side of the second electric rotary drum 16, a second drive motor is fixedly connected to the second annular slide 15, and a second drive gear is fixedly connected to the output shaft of the second drive motor. The second drive gear meshes with the second gear ring. When the second drive motor is started, the second drive gear drives the second gear ring to rotate, and the second gear ring drives the second electric rotary drum 16 to rotate relative to the second annular slide 15.

[0077] Driven by the second electrically controlled slide rail 14, the second annular slide block 15 moves vertically along the axis of the fixed rod 11. Simultaneously, the second electric rotary drum 16 drives the spiral cleaner 17 to rotate around the axis of the fixed rod 11, making the movement trajectory of the spiral cleaner 17 a spiral. By controlling the moving speed of the second annular slide block 15 and the rotation speed of the second electric rotary drum 16, it can be ensured that the spiral cleaner 17 can move without interference along the spiral gap between the fixed spiral shell 7 and the movable spiral shell 8, thereby allowing the spiral cleaner 17 to enter the spiral gap between the fixed spiral shell 7 and the movable spiral shell 8 to rinse the fixed spiral shell 7 and the movable spiral shell 8.

[0078] In this embodiment, the second electrically controlled slide rail 14 and the second electric rotating drum 16 are both electrically connected to an external controller (not shown in the figure). The external controller is used to send control commands to the second electrically controlled slide rail 14 and the second electric rotating drum 16 according to a preset control program, so as to control the linear movement speed of the second annular slide block 15 and the rotation speed of the second electric rotating drum 16, so that the two move synchronously at the set speed, thereby realizing the movement of the spiral cleaner 17 along a predetermined spiral trajectory.

[0079] Working principle: In the initial state, such as Figures 1 to 3 As shown, the filtration mechanism is in wastewater treatment mode. The movable spiral shell 8 is embedded in the spiral gap of the fixed spiral shell 7 and overlaps with the fixed spiral shell 7 vertically, forming a columnar body. The spiral cavities of both the fixed spiral shell 7 and the movable spiral shell 8 are filled with filter media 10. The spiral cleaner 17 is located above the filtration mechanism of the tank body 1.

[0080] In this state, valve 3 remains closed. The wastewater to be treated is discharged into the tank 1 through the distributor 5, while the aerator 6 is turned on to introduce air into the tank 1 for aeration. The wastewater flows upward through the filter media 10 inside the fixed spiral shell 7 and the movable spiral shell 8. The highly active biofilm attached to the surface of the filter media 10 aerobically decomposes the organic matter in the wastewater. At the same time, the filter media 10 and its biofilm effectively remove suspended solids from the wastewater through mechanical interception and adsorption. The purified water after treatment by the filter media 10 is discharged from the outlet pipe 4 at the top of the tank 1, completing the wastewater treatment process.

[0081] When the gaps between the filter media 10 become clogged by trapped particles and detached biofilm after long-term operation, resulting in a gradual decrease in water flow or even blockage, it is necessary to backwash the filter media 10. At this time, the filtration mechanism is switched from the sewage treatment state to the flushing state.

[0082] Specifically, first stop the water distributor 5 from injecting sewage into the tank 1, close the aerator 6, and open the valve 3 to prepare for backwashing and drainage.

[0083] The first drive assembly is activated. The first electrically controlled slide rail 12 drives the first annular slide block 13, which in turn moves the first electric rotary drum 9 and the movable spiral shell 8 upward along the fixed rod 11. At the same time, the first electric rotary drum 9 drives the movable spiral shell 8 to rotate around the fixed rod 11. The movable spiral shell 8 gradually moves out of the fixed spiral shell 7.

[0084] When the bottom end of the movable spiral shell 8 rises to the same horizontal plane as the top end of the fixed spiral shell 7, the first electrically controlled slide rail 12 and the first electric rotating drum 9 are closed, and the movement stops. The state at this time is as follows: Figure 18 As shown, the movable spiral shell 8 has been completely removed from the spiral gap of the fixed spiral shell 7 and is located directly above the fixed spiral shell 7.

[0085] The first electric rotary drum 9 drives the movable spiral shell 8 to rotate in the opposite direction around the fixed rod 11 until the bottom end of the movable spiral shell 8 and the top end of the fixed spiral shell 7 are aligned and in contact in the circumferential position, forming a head-to-tail connection. At this point... Figure 19 and Figure 20 As shown, the movable spiral shell 8 and the fixed spiral shell 7 together form a continuous spiral body. At this point, the filter mechanism has entered the rinsing state.

[0086] The second drive assembly is activated. The second electrically controlled slide rail 14 drives the second annular slide block 15, which in turn moves the second electric rotary drum 16 and the spiral cleaner 17 downward along the fixed rod 11. At the same time, the second electric rotary drum 16 drives the spiral cleaner 17 to rotate around the fixed rod 11. The spiral cleaner 17 gradually embeds itself into the spiral gap of the continuous spiral body formed by the fixed spiral shell 7 and the movable spiral shell 8.

[0087] Once the spiral cleaner 17 has reached its designated position, the second electrically controlled slide rail 14 and the second electric rotary drum 16 are shut off. At this time, as... Figures 21 to 24 As shown, the spiral cleaner 17 is fully embedded in the spiral gap of the continuous spiral body. The top end of the spiral cleaner 17 is flush with the top end of the movable spiral shell 8, and the bottom end of the spiral cleaner 17 is flush with the bottom end of the fixed spiral shell 7.

[0088] In this state, the two second spiral side plates 1701 and the spiral partition 1703 of the spiral cleaner 17 together with the bottom surface of the spiral body located thereon form a dirty water spiral channel 24, and the top and bottom of the dirty water spiral channel 24 are both open.

[0089] In the rinsing state, clean water is injected into the clean water spiral channel 23. The clean water flows out through the spiral water distribution plate 1702. The flowing clean water flows downward into the filter media 10 to backwash the filter media 10.

[0090] Since the spiral cleaner 17 is completely embedded in the spiral gap of the entire spiral body, the spiral cleaner 17 washes the filter media 10 of each layer of the spiral body separately. Therefore, the water flow scouring force is more uniform regardless of the height of the filter media 10, ensuring the consistency of the cleaning effect of each layer of filter media 10.

[0091] The dirty water after rinsing each layer of filter media 10 flows downward under the action of gravity and directly enters the adjacent dirty water spiral channel 24 below. The dirty water flows downward in the dirty water spiral channel 24 and finally flows into the tank body 1 from the bottom opening of the dirty water spiral channel 24, and is discharged from the tank body 1 through the backwash drain pipe 2.

[0092] After rinsing, the filter mechanism is restored to the sewage treatment state to continue purifying the sewage.

[0093] Specifically, firstly, the second drive component is controlled to reverse its movement, causing the spiral cleaner 17 to move upwards along the spiral line, completely exiting the spiral gap of the continuous spiral body and returning to its initial position. Then, the first drive component is controlled to return the movable spiral shell 8 from above the fixed spiral shell 7 back into the spiral gap of the fixed spiral shell 7, re-overlapping with the fixed spiral shell 7 and restoring the wastewater treatment state. Finally, valve 3 is closed, aerator 6 is reopened, and wastewater is injected into the tank 1 through water distributor 5 to continue wastewater treatment.

[0094] Example 2: The flushing mechanism also includes a piping assembly for supplying water to the spiral cleaner 17. For example... Figure 1 , Figure 2 and Figure 3 As shown, the piping assembly includes an arc-shaped connecting pipe 18, a first annular pipe 19, a second annular pipe 20, and a water pipe 22.

[0095] The second annular pipe 20 is slidably connected to the inner wall of the pool body 1, and a vertical groove 21 is provided on the inner wall of the pool body 1. A protrusion is slidably provided in the vertical groove 21, and the protrusion is fixedly connected to the second annular pipe 20. The water pipe 22 is connected to the second annular pipe 20, and the water pipe 22 injects clean water into the second annular pipe 20.

[0096] The first annular tube 19 and the second annular tube 20 are rotatably connected. The first annular tube 19 and the second annular tube 20 are in communication.

[0097] One end of the arc-shaped connecting pipe 18 is fixedly connected to the first annular pipe 19, and the other end is connected to the clean water spiral channel 23 inside the spiral cleaner 17. The first annular pipe 19 rotates synchronously with the spiral cleaner 17, while the second annular pipe 20 does not rotate but slides up and down with the change of the vertical position of the spiral cleaner 17, thereby realizing dynamic water supply.

[0098] In the flushing state, after the spiral cleaner 17 is inserted into the spiral gap between the fixed spiral shell 7 and the movable spiral shell 8, the external pump is activated, pumping clean water into the second annular pipe 20 through the water pipe 22. Since the second annular pipe 20 is connected to the first annular pipe 19, after the clean water enters the first annular pipe 19, it enters the clean water spiral channel 23 of the spiral cleaner 17 through the arc-shaped connecting pipe 18. The clean water flows along the spiral path in the clean water spiral channel 23 and flows out through the spiral water distribution plate 1702 under pressure, backwashing the filter media 10.

[0099] Example 3: In order to protect the second electrically controlled slide rail 14 from corrosion and pollution by the sewage in the pool 1, soft rubber telescopic sleeves (not shown in the figure) are fixedly connected to both the upper and lower ends of the second annular slide block 15.

[0100] The soft rubber telescopic sleeve at the upper end of the second annular slide block 15 is fixedly connected to the top of the fixing rod 11. The soft rubber telescopic sleeve at the lower end of the second annular slide block 15 is rotatably connected to the top of the first electric rotary drum 9. Specifically, the soft rubber telescopic sleeve has a corrugated tubular structure and is made of corrosion-resistant rubber or silicone material, which can expand and contract axially. When the second annular slide block 15 slides up and down along the second electrically controlled slide rail 14, the two soft rubber telescopic sleeves expand and contract synchronously, always sealing and wrapping the second electrically controlled slide rail 14 inside, thereby preventing the sewage in the pool 1 from contacting the second electrically controlled slide rail 14.

[0101] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 wastewater purification and treatment device, comprising a tank (1), characterized in that: The pool body (1) is provided with a filtration mechanism and a rinsing mechanism. The filtration mechanism includes a fixed spiral shell (7) and a movable spiral shell (8) fixed in the pool body (1). Both the fixed spiral shell (7) and the movable spiral shell (8) are filled with filter media (10). The pool body (1) is provided with a first driving component that drives the movable spiral shell (8) to move and rotate. The rinsing mechanism includes a spiral cleaner (17), and a second drive assembly is installed inside the pool body (1) to drive the spiral cleaner (17) to move and rotate. The filtration mechanism has a wastewater treatment state and a flushing state: In the sewage treatment state, the movable spiral shell (8) is embedded in the spiral gap of the fixed spiral shell (7); In the rinsing state, the movable spiral shell (8) moves out of the fixed spiral shell (7), and the end of the movable spiral shell (8) is connected to the end of the fixed spiral shell (7), so that the movable spiral shell (8) and the fixed spiral shell (7) form a continuous spiral body; the second drive assembly drives the spiral cleaner (17) to move spirally and embed into the spiral gap of the spiral body, and the clean water in the spiral cleaner (17) flows out and passes through the filter mechanism to rinse the filter material (10).

2. The wastewater purification treatment equipment according to claim 1, characterized in that: The spiral cleaner (17) includes a second spiral side plate (1701), a spiral water distribution plate (1702), and a spiral partition (1703). The second spiral side plate (1701), the spiral water distribution plate (1702), and the spiral partition (1703) together form a clean water spiral channel (23). The spiral water distribution plate (1702) and the spiral partition (1703) are fixedly connected between the two second spiral side plates (1701).

3. The wastewater purification treatment equipment according to claim 2, characterized in that: In the rinsing state, the spiral baffle (1703), the second spiral side plate (1701) and the filter mechanism together form a dirty water spiral channel (24), and the dirty water after rinsing enters the dirty water spiral channel (24).

4. The wastewater purification treatment equipment according to claim 1, characterized in that: The movable spiral shell (8) includes two first spiral side plates (801) and two spiral filter media baffles (802). The two first spiral side plates (801) and the two spiral filter media baffles (802) together form a spiral cavity for accommodating the filter media (10). The mesh size of the spiral filter media baffles (802) is smaller than the particle size of the filter media (10).

5. The wastewater purification treatment equipment according to claim 1, characterized in that: The first drive assembly includes a first electrically controlled slide rail (12), a first annular slide block (13), and a first electric rotary drum (9). The first electrically controlled slide rail (12) is disposed inside the pool body (1). The first annular slide block (13) is slidably mounted on the first electrically controlled slide rail (12). The first electric rotary drum (9) is rotatably mounted on the first annular slide block (13). The movable spiral shell (8) is fixedly connected to the first electric rotary drum (9).

6. The wastewater purification treatment equipment according to claim 1, characterized in that: The second drive assembly includes a second electrically controlled slide rail (14), a second annular slide block (15), and a second electric rotary drum (16). The second electrically controlled slide rail (14) is disposed inside the pool body (1). The second annular slide block (15) is slidably mounted on the second electrically controlled slide rail (14). The second electric rotary drum (16) is rotatably mounted on the second annular slide block (15). The spiral cleaner (17) is fixedly connected to the second electric rotary drum (16).

7. The wastewater purification treatment equipment according to claim 1, characterized in that: The flushing mechanism also includes a piping assembly for supplying water to the spiral cleaner (17). The piping assembly includes a first annular pipe (19), a second annular pipe (20), an arc-shaped connecting pipe (18) connecting the first annular pipe (19) and the spiral cleaner (17), and a water pipe (22) connected to the second annular pipe (20). The second annular pipe (20) is connected to the first annular pipe (19). The second annular pipe (20) is slidably disposed in the pool body (1), and the first annular pipe (19) and the second annular pipe (20) are rotatably connected.

8. The wastewater purification treatment equipment according to claim 1, characterized in that: The bottom of the pool (1) is connected to a backwash drain pipe (2), and a valve (3) is installed on the backwash drain pipe (2).

9. The wastewater purification treatment equipment according to claim 1, characterized in that: A water distributor (5) is installed on the inner bottom side of the pool body (1).

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