Water purifying device for water pollution treatment

Abstract

The present application relates to sewage treatment related technical field, specifically to a kind of water purifying device for water pollution treatment, including first processing cylinder and second processing cylinder are connected.The first processing cylinder is equipped with containing cylinder, and first elastic net cylinder filled with first filter ball is installed in containing cylinder, and drain pipe is connected with filtering assembly again;Second processing cylinder is equipped with sedimentation cylinder and bell jar cylinder, and the top of bell jar cylinder is equipped with exhaust pipe with air valve, and bottom is connected with blow-off pipe.Rotary rod is arranged through, and its bottom is equipped with vane in blow-off pipe, and its top is equipped with stirring rod in first elastic net cylinder.The water flow of the present application is impacted vane when siphon mud is discharged in bell jar cylinder, drives rotary rod to rotate, drives stirring rod to disturb first filter ball to prevent blockage;While sewage flow generates negative pressure in hollow rod, so that cleaning frame rotates and adsorbs annular filter screen disc impurities and is discharged together.The present application realizes the zero energy consumption linkage of filter layer self-cleaning and sludge smooth discharge, solves the problem of filter layer easy to block and sludge unsmooth.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically a water purification device for water pollution treatment. Background Technology

[0002] With the acceleration of industrialization and the continuous improvement of urbanization, water pollution has become increasingly serious, posing a severe threat to the ecological environment and human health. In the field of water pollution control, physical treatment methods are widely used due to their advantages such as relatively controllable costs and no risk of secondary pollution from chemical agents. Especially for water bodies containing suspended particulate matter, colloids, and some organic pollutants, a combined process of "filtration + sedimentation" is typically used for purification. Common water purification devices use multiple layers of filter media to trap impurities and utilize the principle of gravity sedimentation to achieve mud-water separation. Finally, the concentrated sludge is discharged periodically or through backwashing to restore the device's water purification capacity.

[0003] However, in practical engineering applications, the existing integrated "filtration + sedimentation" water purification devices have been found to have the following main technical defects during long-term operation: First, the contradiction between filter layer clogging and poor sludge discharge. Traditional devices often use single-stage filter media with larger particle sizes to extend the filtration cycle, causing fine suspended solids to penetrate the filter layer and enter the sedimentation zone, increasing the subsequent sedimentation load. If fine filter media is used, although the filtration accuracy is improved, the filter media layer is easily clogged by impurities, and these impurities tend to cake on the filter layer surface. Conventional backwashing or static sludge discharge methods are insufficient to effectively remove and discharge the sticky impurities accumulated deep within the filter media. Second, the problem of insufficient power for sludge concentration and discharge at the bottom of the sedimentation zone. Existing devices usually rely on hydrostatic pressure or the opening of bottom valves for sludge discharge. However, the concentrated sludge formed at the bottom of the sedimentation zone is often dense and has poor fluidity. Relying solely on gravity for sludge discharge easily leads to short-circuiting or clogging of the discharge pipe, resulting in a large amount of sludge accumulating at the bottom of the device and undergoing anaerobic fermentation. This not only reduces the effective sedimentation volume but may also generate bubbles that rise and agitate the sedimentation layer, leading to deterioration of the effluent quality. Third, low energy utilization efficiency. Existing filter media cleaning or auxiliary agitation mechanisms often require external electrical drive (such as a motor-driven scraper or agitator). This not only increases the equipment's operating energy consumption and maintenance costs, but also results in the waste of energy due to the ineffective recovery and utilization of the fluid kinetic energy generated during sludge discharge. Therefore, there is an urgent need to develop a new type of water purification device that can effectively alleviate filter layer clogging, enhance the smooth discharge of bottom sludge, and efficiently utilize the fluid's own kinetic energy. Summary of the Invention

[0004] The purpose of this invention is to provide a water purification device for water pollution treatment, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A water purification device for water pollution treatment includes a first treatment cylinder and a second treatment cylinder. A top cover plate is detachably installed on the top of the first treatment cylinder, and a water inlet pipe is installed in the center of the top cover plate. A sewage discharge pipe is installed in the center of the bottom of the second treatment cylinder. The bottom of the first treatment cylinder is detachably installed on the top of the second treatment cylinder, and the bottom inner cavity of the first treatment cylinder is connected to the top inner cavity of the second treatment cylinder.

[0007] A receiving cylinder is installed in the lower part of the inner cavity of the first processing cylinder. An annular disinfection lamp plate is installed on the inner wall of the receiving cylinder. A first elastic mesh cylinder is installed in the inner cavity of the receiving cylinder. A first filter ball is filled in the first elastic mesh cylinder. An annular groove is provided on the inner bottom surface of the receiving cylinder. Several drain pipes are evenly distributed around the bottom circumference of the annular groove. A control valve is installed at the top of the inner cavity of the drain pipe.

[0008] A re-filtration assembly is installed in the upper part of the inner cavity of the second treatment cylinder. The bottom end of the drain pipe extends into the inner cavity of the re-filtration assembly. A sedimentation cylinder is installed at the bottom of the inner cavity of the second treatment cylinder. The inner diameter of the sedimentation cylinder gradually decreases from top to bottom. A bell-shaped cylinder is installed in the upper part of the inner cavity of the sedimentation cylinder. An exhaust pipe is installed on one side of the top of the bell-shaped cylinder. One end of the exhaust pipe extends to the outside of the second treatment cylinder and is equipped with an air valve. There is a distance between the bottom end of the bell-shaped cylinder and the inner bottom surface of the sedimentation cylinder. The top end of the sewage pipe extends to the middle of the inner cavity of the bell-shaped cylinder. A water outlet pipe is installed on one side of the middle of the second treatment cylinder. An exhaust pipe is installed above the water outlet pipe.

[0009] A rotating rod is mounted on the central axis of the inner cavity of the second processing cylinder via a mounting bracket. The bottom end of the rotating rod extends to the upper part of the inner cavity of the sewage pipe, and several blades are installed on the outer wall of this end. The top end of the rotating rod extends into the first elastic mesh cylinder, and several stirring rods are installed on the outer wall of this end. A first sealing bearing sleeve and a second sealing bearing sleeve are respectively installed at the center of the top end of the bell jar cylinder and the center of the bottom end of the receiving cylinder. The lower and upper parts of the rotating rod are respectively rotatably fitted into the first sealing bearing sleeve and the second sealing bearing sleeve.

[0010] As a further embodiment of the present invention: a distance is left between the outer wall of the first elastic mesh cylinder and the inner wall of the receiving cylinder, and a second elastic mesh cylinder is also installed inside the receiving cylinder. The outer wall of the second elastic mesh cylinder is in contact with the inner wall of the receiving cylinder, and a second filter ball is filled between the inner wall of the second elastic mesh cylinder and the outer wall of the first elastic mesh cylinder. The diameter and filter hole size of the second filter ball are both smaller than those of the first filter ball.

[0011] As a further embodiment of the present invention: an annular edge layer is connected to the top edge of the first elastic mesh cylinder, and a circular ring plate is connected to the center of the bottom end of the first elastic mesh cylinder. The inner wall of the circular ring plate is slidably attached to the outer wall of the rotating rod. The second elastic mesh cylinder adopts the same structure as the first elastic mesh cylinder.

[0012] As a further embodiment of the present invention: a clamping assembly is installed at the top of the receiving cylinder. The clamping assembly includes an annular base installed at the top of the receiving cylinder, a first clamping plate detachably installed at the top of the annular base, and a second clamping plate detachably installed at the top of the first clamping plate. A first clamping groove is provided on the inner circumference of the top of the annular base, and a second clamping groove is provided on the inner circumference of the top of the first clamping plate. An anti-slip layer is provided on the inner bottom surface of the first clamping groove, the bottom end of the first clamping plate, the inner bottom surface of the second clamping groove, and the bottom end of the second clamping plate. The top edge of the first elastic mesh cylinder is clamped in the second clamping groove, and the top edge of the second elastic mesh cylinder is clamped in the first clamping groove.

[0013] As a further embodiment of the present invention: the re-filtration assembly includes a first cylindrical tube disposed on the outer periphery of the middle part of the rotating rod, a second cylindrical tube disposed on the outer periphery of the first cylindrical tube, and an annular filter screen disk installed between the outer wall of the first cylindrical tube and the inner wall of the second cylindrical tube. The bottom end of the drain pipe extends to the space between the outer wall of the first cylindrical tube and the inner wall of the second cylindrical tube, and is located above the annular filter screen disk.

[0014] As a further embodiment of the present invention: the lower half of the rotating rod is a hollow rod, and a right-angle tube is detachably installed on the top outer wall of the hollow rod. The lower part of the right-angle tube extends between the outer wall of the first cylindrical tube and the inner wall of the second cylindrical tube. A cleaning frame is installed at the bottom end of the right-angle tube. The length of the cleaning frame corresponds to the ring width of the annular filter screen. The bottom end of the cleaning frame slides against the top end of the annular filter screen. The inner cavity of the cleaning frame is connected to the inner cavity of the hollow rod through the right-angle tube.

[0015] As a further embodiment of the present invention: a support block is installed on the upper inner wall of the inner cavity of the first processing cylinder, and a conical ring plate is placed on the support block. The inner circumference of the bottom end of the conical ring plate is connected to the outer circumference of the bottom end of the conical filter plate.

[0016] As a further embodiment of the present invention: a disc is installed at the top of the conical filter plate, and a diffusion cone is installed at the center of the top of the disc, the diffusion cone being located directly below the bottom of the water inlet pipe.

[0017] As a further embodiment of the present invention, it also includes a support cylinder, wherein a plurality of legs are evenly distributed around the bottom circumference of the support cylinder, and the bottom of the legs are equipped with wheels, and the bottom of the second processing cylinder is placed in the inner cavity of the support cylinder.

[0018] The present invention has the following advantages:

[0019] 1. By setting up a linkage structure of a first elastic screen cylinder, a second elastic screen cylinder, and a stirring rod, the problems of easy clogging of the filter layer and difficulty in impurity precipitation in the prior art are effectively solved. In this solution, a first elastic screen cylinder filled with first filter balls is installed inside the receiving cylinder. When the rotating rod rotates under the drive of the siphon sewage flow, the stirring rod on the outer wall of the top of the rotating rod can stir the first filter balls inside the first elastic screen cylinder in real time. This dynamic disturbance mechanism can effectively prevent suspended impurities from statically accumulating and hardening on the surface and gaps of the first filter balls, and promote the removal and precipitation of the trapped impurities under the deformation and compression of the elastic screen cylinder and the collision and friction between the filter balls, thereby significantly extending the effective operating cycle of the filter assembly and ensuring the long-term stability of the filtration flow rate. Furthermore, by filling the space between the outer wall of the first elastic screen cylinder and the inner wall of the receiving cylinder with a second filter ball with a smaller diameter and finer pores, a gradient filtration structure is formed, which not only ensures a large dirt holding capacity, but also improves the effluent accuracy, solving the contradiction of "coarse filtration penetration and fine filtration clogging" in traditional single-particle-size filter media.

[0020] 2. Through the combined design of the bell-shaped jar, exhaust pipe, air valve, and drain pipe, a powerful sludge removal effect based on the siphon principle is achieved, overcoming the shortcomings of existing sedimentation tanks where insufficient discharge power and easy short-flow blockage are common after sludge concentration at the bottom. In this design, the inner diameter of the sedimentation tank gradually decreases from top to bottom to facilitate sludge collection, and a bell-shaped jar is installed in the upper part of the sedimentation tank's inner cavity. During normal filtration, the air valve on the exhaust pipe is closed, and the bell-shaped jar is filled with air to form an air seal, allowing clean water to be discharged from the outlet pipe. When the air valve is opened, the gas inside the bell-shaped jar is rapidly discharged through the exhaust pipe, and the water pressure at the bottom of the sedimentation tank pushes the wastewater to rush into the bell-shaped jar and fill the drain pipe, triggering the siphon effect. The powerful siphon suction force can smoothly discharge the concentrated sludge with high density and poor fluidity at the bottom of the sedimentation tank, along with the sewage, through the inner cavity of the bell-shaped cylinder and the sewage pipe. This avoids the common "short-flow" phenomenon at the pipe opening (i.e., only clear water is discharged and no sludge is discharged) and the problem of sludge accumulating at the bottom of the sedimentation tank for a long time, leading to anaerobic fermentation and the generation of bubbles that disturb the water quality.

[0021] 3. By installing blades inside the sewage pipe and linking them with the rotating rod and hollow cleaning frame structure, this design achieves efficient recovery and utilization of hydraulic energy and synchronous self-cleaning of the filter components, solving the problems of wasted sludge discharge kinetic energy and the need for external power in existing devices. During the siphon discharge process, the high-speed flowing sewage in the sewage pipe impacts the blades at the bottom of the rotating rod, driving the rotating rod to rotate. This design cleverly converts the fluid kinetic energy that would otherwise be directly dissipated in the pipe into mechanical energy, synchronously driving the top stirring rod to agitate the first filter ball without the need for an additional motor or reducer. More importantly, when the lower half of the rotating rod is set as a hollow rod and connected to a right-angle pipe with a cleaning frame, the negative pressure suction force generated by the water flow in the sewage pipe can be transmitted to the inner cavity of the cleaning frame through the hollow rod. As the cleaning frame rotates and scrapes along the surface of the annular filter screen with the rotating rod, the negative pressure draws in the scraped fine impurities in real time and discharges them through the hollow rod into the sewage pipe. Thus, while siphoning the bottom sludge, the automatic cleaning and discharge of the annular filter screen in the re-filtration component is completed simultaneously. This linkage mechanism not only achieves zero-energy mechanical disturbance and filter cleaning, but also significantly improves the automation level of the device operation and the ease of maintenance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall external structure of an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the overall internal structure of an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the rotating rod in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the receiving cylinder in an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the first elastic mesh cylinder in an embodiment of the present invention.

[0027] Figure 6 This is an exploded view of the clamping assembly in an embodiment of the present invention.

[0028] Figure 7 for Figure 2 Enlarged diagram of part A in the image.

[0029] In the diagram: 1. Support cylinder; 101. Support leg; 102. Caster wheel; 2. First treatment cylinder; 201. Top cover plate; 202. Inlet pipe; 203. Support block; 204. Conical ring plate; 205. Conical filter plate; 206. Diffuser cone; 207. Disc; 3. Second treatment cylinder; 301. Sedimentation cylinder; 302. Bell jar cylinder; 303. Sewage pipe; 304. Outlet pipe; 305. First sealing bearing sleeve; 306. Exhaust pipe; 307. Air valve; 308. Exhaust pipe; 4. Receiving cylinder; 401. Annular disinfection lamp plate; 402. Control box; 403. Annular groove; 404. Drain pipe; 405. Second sealing bearing sleeve; 4 06. Control valve; 5. Re-filtration assembly; 501. First cylindrical cylinder; 502. Second cylindrical cylinder; 503. Annular filter screen; 6. Rotating rod; 601. Stirring rod; 602. Hollow rod; 603. Blade; 604. Right-angle tube; 605. Cleaning frame; 606. Support plate; 7. Clamping assembly; 701. Annular base; 702. First clamping plate; 703. Second clamping plate; 704. First clamping groove; 705. Second clamping groove; 706. Anti-slip layer; 8. First elastic screen cylinder; 801. Annular edge layer; 802. Circular ring plate; 9. Second elastic screen cylinder; 10. First filter ball; 11. Second filter ball; 12. Mounting frame. Detailed Implementation

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0032] Example 1: Please refer to Figures 1 to 7 A water purification device for water pollution treatment includes a first treatment cylinder 2 and a second treatment cylinder 3. The first treatment cylinder 2 has a detachable top cover plate 201 installed at its top, with an inlet pipe 202 installed in the center of the top cover plate 201. The second treatment cylinder 3 has a drain pipe 303 installed in the center of its bottom end. The bottom end of the first treatment cylinder 2 is detachably installed on the top end of the second treatment cylinder 3. Specifically, both the bottom end of the first treatment cylinder 2 and the top end of the second treatment cylinder 3 are provided with mounting plate structures for combined installation. The two mounting plate structures are fixedly connected by bolts and fasteners, and a sealing gasket can be sandwiched between their contact surfaces to ensure sealing. The bottom inner cavity of the first treatment cylinder 2 is connected to the top inner cavity of the second treatment cylinder 3.

[0033] A receiving cylinder 4 is installed in the lower part of the inner cavity of the first treatment cylinder 2. The outer wall of the receiving cylinder 4 is fixedly connected to the inner wall of the first treatment cylinder 2 by welding or a bracket. An annular disinfection lamp plate 401 is installed on the inner wall of the receiving cylinder 4. The annular disinfection lamp plate 401 is an annular light strip composed of an ultraviolet LED lamp plate or an ultraviolet lamp tube, used to disinfect the water during the filtration process. A first elastic mesh cylinder 8 is installed in the inner cavity of the receiving cylinder 4. The first elastic mesh cylinder 8 is filled with a first filter ball 10. The first filter ball 10 can be made of activated carbon particles, ceramic particles, or polymer filter media particles, which have good adsorption and... The ability to intercept suspended solids is provided by an annular groove 403 on the inner bottom surface of the receiving cylinder 4. Several drain pipes 404 are evenly distributed around the bottom circumference of the annular groove 403. The annular groove 403 facilitates the collection of water filtered by the first filter ball 10 and the second filter ball 11. A control valve 406 is installed at the top of the inner cavity of the drain pipe 404. The control valve 406 is a solenoid valve or a manual ball valve, which is used to control the independent opening and closing of each drain pipe 404 to facilitate the maintenance or adjustment of the uniformity of water distribution. A control box 402 for connecting and controlling various electrical components is installed on the outer wall of the first treatment cylinder 2.

[0034] A re-filtration assembly 5 is installed in the upper part of the inner cavity of the second treatment cylinder 3. The bottom end of the drain pipe 404 extends into the inner cavity of the re-filtration assembly 5. A sedimentation cylinder 301 is installed at the bottom of the inner cavity of the second treatment cylinder 3. The inner diameter of the sedimentation cylinder 301 gradually decreases from top to bottom, forming an inverted frustum shape to facilitate the sludge to collect towards the center bottom. A bell-shaped cylinder 302 is installed in the upper part of the inner cavity of the sedimentation cylinder 301. The bell-shaped cylinder 302 is a cylindrical structure with a closed top and an open bottom. Its outer wall is fixedly connected to the inner wall of the sedimentation cylinder 301 by several support rods. An exhaust pipe 306 is installed on one side of the top of the bell-shaped cylinder 302. One end of the exhaust pipe 306 extends outside the second treatment cylinder 3 and... An air valve 307 is installed, preferably a solenoid valve, to facilitate automatic control. A distance is left between the bottom end of the bell jar 302 and the inner bottom surface of the sedimentation tank 301. The top end of the drain pipe 303 extends to the middle of the inner cavity of the bell jar 302. The height of the top inlet of the drain pipe 303 is higher than the height of the bottom opening of the bell jar 302 to ensure that enough air can be retained in the bell jar 302 to form an air seal before siphon formation. A water outlet pipe 304 is installed on one side of the middle of the second treatment tank 3. An exhaust pipe 308 is provided above the water outlet pipe 304. The exhaust pipe 308 is used to maintain the air pressure in the upper part of the inner cavity of the second treatment tank 3 in balance with the outside, ensuring smooth water discharge from the water outlet pipe 304.

[0035] A rotating rod 6 is mounted on the central axis of the inner cavity of the second processing cylinder 3 via a mounting bracket 12. The mounting bracket 12 is a cross-shaped support structure with a bearing seat at its center for the rotating rod 6 to pass through and rotate. The bottom end of the rotating rod 6 extends to the upper part of the inner cavity of the sewage pipe 303, and several blades 603 are mounted on the outer wall of this end. The blades 603 are propeller-type blades or turbine-type blades, and their inclination direction is adapted to the water flow direction in the sewage pipe 303 to maximize the fluid kinetic energy conversion efficiency. The top end of the rotating rod 6 extends into the first elastic mesh cylinder 8, and several blades are detachably mounted on the outer wall of this end. The stirring rod 601 is a rod-shaped structure extending radially along the rotating rod 6. Its surface may be provided with several protrusions or branches to enhance the stirring effect on the first filter ball 10. The first sealing bearing sleeve 305 and the second sealing bearing sleeve 405 are respectively installed at the center of the top end of the bell jar cylinder 302 and the center of the bottom end of the receiving cylinder 4. The first sealing bearing sleeve 305 and the second sealing bearing sleeve 405 are both provided with corrosion-resistant sealing rings and rolling bearings. The lower and upper parts of the rotating rod 6 are respectively rotatably fitted inside the first sealing bearing sleeve 305 and the second sealing bearing sleeve 405.

[0036] The exhaust pipe 306 is used to discharge the gas in the sedimentation tank 301. After the sewage is filtered by the first filter ball 10 and the re-filtration assembly 5, it falls into the sedimentation tank 301 for sedimentation. The water level in the sedimentation tank 301 rises until the upper layer of clear water is discharged from the outlet pipe 304, and the lower layer of water settles. When the air valve 307 is closed, the bell jar 302 is filled with air. After a period of time, the air valve 307 is opened, the gas in the bell jar 302 is discharged, and the water at the bottom of the sedimentation tank 301 enters the bell jar 302, creating a siphon effect. The dirt at the bottom of the sedimentation tank 301 is discharged through the drain pipe 303. When the drain pipe 303 drains water, it impacts the blades 603, which in turn drives the rotating rod 6 to rotate. The rotating rod 6 drives the stirring rod 601 to rotate and stir the first filter ball 10, causing the impurities accumulated in the container 4 to precipitate out.

[0037] Furthermore, a distance is left between the outer wall of the first elastic mesh cylinder 8 and the inner wall of the receiving cylinder 4. A second elastic mesh cylinder 9 is also installed inside the receiving cylinder 4. The outer wall of the second elastic mesh cylinder 9 is in contact with the inner wall of the receiving cylinder 4. A second filter ball 11 is filled between the inner wall of the second elastic mesh cylinder 9 and the outer wall of the first elastic mesh cylinder 8. The diameter and filter hole size of the second filter ball 11 are smaller than those of the first filter ball 10, thus forming a two-stage gradient filtration structure from coarse to fine. The first filter ball 10 is mainly used to intercept larger particulate impurities and extend the dirt holding cycle. The second filter ball 11 is used for fine filtration to improve the quality of the effluent. A support plate 606 is installed on the upper part of the rotating rod 6. The support plate 606 is used to support the center position of the bottom of the first elastic mesh cylinder 8 to prevent the bottom of the first elastic mesh cylinder 8 from collapsing.

[0038] Furthermore, an annular edge layer 801 is connected to the top edge of the first elastic mesh cylinder 8. The annular edge layer 801 is a non-elastic, dense annular fabric or flexible plastic sheet, so as to be firmly clamped by the clamping assembly 7. A circular ring plate 802 is connected to the center of the bottom end of the first elastic mesh cylinder 8. The inner wall of the circular ring plate 802 slides against the outer wall of the rotating rod 6. The circular ring plate 802 ensures that the rotating rod 6 can rotate freely and prevents the first filter ball 10 from leaking out from the bottom. The second elastic mesh cylinder 9 adopts the same structure as the first elastic mesh cylinder 8.

[0039] Furthermore, a clamping assembly 7 is installed at the top of the receiving cylinder 4. The clamping assembly 7 includes an annular base 701 installed at the top of the receiving cylinder 4, a first clamping plate 702 detachably installed at the top of the annular base 701, and a second clamping plate 703 detachably installed at the top of the first clamping plate 702. The annular base 701, the first clamping plate 702, and the second clamping plate 703 are all detachably fastened together by bolts. The top inner circumference of the annular base 701 is provided with a first... The clamping groove 704 is provided with a second clamping groove 705 on the top inner circumference of the first clamping plate 702. The inner bottom surface of the first clamping groove 704, the bottom end of the first clamping plate 702, the inner bottom surface of the second clamping groove 705, and the bottom end of the second clamping plate 703 are all provided with an anti-slip layer 706. The anti-slip layer 706 is made of rubber or silicone. The top edge of the second elastic mesh cylinder 9 is clamped in the first clamping groove 704, and the top edge of the first elastic mesh cylinder 8 is clamped in the second clamping groove 705.

[0040] Furthermore, the re-filtration assembly 5 includes a first cylindrical tube 501 disposed on the outer periphery of the middle part of the rotating rod 6, a second cylindrical tube 502 disposed on the outer periphery of the first cylindrical tube 501, and an annular filter screen 503 installed between the outer wall of the first cylindrical tube 501 and the inner wall of the second cylindrical tube 502. The first cylindrical tube 501 and the second cylindrical tube 502 are installed and fixed to the inner wall of the second processing tube 3 or the mounting bracket 12 by a support rod. The edge of the annular filter screen 503 rests on the annular step on the inner wall of the second cylindrical tube 502, and its inner edge is sealed and fitted to the outer wall of the first cylindrical tube 501. The bottom end of the drain pipe 404 extends to the space between the outer wall of the first cylindrical tube 501 and the inner wall of the second cylindrical tube 502, and is located above the annular filter screen 503.

[0041] Furthermore, the lower half of the rotating rod 6 is a hollow rod 602. The bottom opening of the hollow rod 602 is located below the blade 603 and communicates with the inner cavity of the drain pipe 303. A right-angle tube 604 is detachably installed on the top outer wall of the hollow rod 602. The right-angle tube 604 is connected to the hollow rod 602 by a threaded joint or clamp. The lower part of the right-angle tube 604 extends between the outer wall of the first cylindrical tube 501 and the inner wall of the second cylindrical tube 502. A cleaning frame 605 is installed at the bottom end of the right-angle tube 604. The length of the cleaning frame 605 corresponds to the circumferential width of the annular filter disc 503. The bottom end of the cleaning frame 605 slides and fits against the top end of the annular filter disc 503. The inner cavity of the cleaning frame 605 is connected to the inner cavity of the hollow rod 602 through the right-angle tube 604. Bristles are installed on the inner top surface and / or inner sidewall of the cleaning frame 605, and the bottom ends of the bristles contact the top end of the annular filter disc 503 to improve the cleaning effect. When the drain pipe 303 discharges sewage under the siphon effect, the water flow in the drain pipe 303 will generate negative pressure at the bottom end of the hollow rod 602, thereby causing the hollow rod 602 to produce an adsorption effect. In conjunction with the rotating rod 6, the cleaning frame 605 is rotated, so that the cleaning frame 605 can suck in the impurities on the annular filter disc 503 and then discharge them through the drain pipe 303.

[0042] Example 2: See Figure 1 , Figure 2 Based on Embodiment 1, a support block 203 is installed on the upper inner wall of the inner cavity of the first processing cylinder 2. A conical annular plate 204 is placed on the support block 203. The conical annular plate 204 is a funnel-shaped structure with its wider end facing upwards. The inner circumference of the bottom end of the conical annular plate 204 is connected to the outer circumference of the bottom end of the conical filter plate 205. The conical filter plate 205 is a funnel-shaped structure with its wider end facing downwards. An annular groove is formed at the connection between the two to temporarily store large particulate impurities that are intercepted. A disc 207 is installed at the top of the conical filter plate 205. A diffusion cone 206 is installed at the center of the top of the disc 207. The diffusion cone 206 is located directly below the bottom end of the water inlet pipe 202. Wastewater first impacts the diffusion cone 206 for diffusion, then falls onto the conical ring plate 204, and finally falls into the receiving cylinder 4. The conical filter plate 205 can intercept larger impurities, preventing large particles from falling directly into the receiving cylinder 4 and causing the first elastic screen cylinder 8 to become clogged too quickly.

[0043] Furthermore, it also includes a support cylinder 1, on which several legs 101 are evenly distributed around the bottom circumference. The bottom of the legs 101 is equipped with casters 102, which are universal casters with braking function to facilitate the movement and fixation of the device. The bottom of the second processing cylinder 3 is placed in the inner cavity of the support cylinder 1.

[0044] The detailed working principle of the water purification device for water pollution treatment according to the present invention is as follows:

[0045] I. Water Inlet and Primary Filtration Stage

[0046] The wastewater to be treated enters the upper part of the inner cavity of the first treatment cylinder 2 through the inlet pipe 202. The water flow first impacts the tip of the diffusion cone 206 and spreads evenly in all directions, then falls onto the funnel-shaped inner wall of the conical annular plate 204. As the water flows downward along the surface of the conical annular plate 204, large suspended particles and floating impurities are intercepted by the conical filter screen plate 205 and temporarily stored in the annular groove at the connection between the conical annular plate 204 and the conical filter screen plate 205, completing the initial coarse filtration. The wastewater that has undergone the initial coarse filtration continues to flow downward into the receiving cylinder 4.

[0047] After entering the receiving cylinder 4, the wastewater flows sequentially through the first elastic mesh cylinder 8 filled with the first filter balls 10 and the second elastic mesh cylinder 9 filled with the second filter balls 11 under the action of gravity. Because the first filter balls 10 have a larger diameter and pore size, their internal gaps can trap larger suspended particles and provide a larger dirt-holding space. As the water continues to flow outward through the second filter balls 11, the smaller diameter and finer pores of the second filter balls further trap finer particles, achieving two-stage gradient filtration. During this process, the annular disinfection lamp plate 401 installed on the inner wall of the receiving cylinder 4 emits ultraviolet light to continuously disinfect the flowing water. The water after two-stage filtration collects in the annular groove 403 at the bottom of the receiving cylinder 4 and is discharged downwards into the re-filtration assembly 5 via several drain pipes 404 and an open control valve 406.

[0048] II. Re-filtration and sedimentation clarification stage

[0049] Water from drain pipe 404 enters the area between the outer wall of the first cylindrical tube 501 and the inner wall of the second cylindrical tube 502 in the re-filtration assembly 5. The water flows from top to bottom through the annular filter screen 503 for a final fine filtration treatment to remove any small particles it may be carrying. The clean water filtered by the annular filter screen 503 continues to fall into the sedimentation tank 301.

[0050] After water enters the sedimentation tank 301, the water flow velocity gradually decreases as the inner diameter of the sedimentation tank 301 gradually decreases from top to bottom. The extremely fine particles remaining in the water naturally settle under gravity, sliding down the inner wall of the sedimentation tank 301 and collecting in the bottom center area. As the filtration process continues, the water level in the sedimentation tank 301 rises continuously. The upper layer of clear water, after sufficient sedimentation, flows upward through the annular water passage between the outer wall of the sedimentation tank 301 and the inner wall of the second treatment tank 3, and is finally discharged smoothly through the outlet pipe 304 located in the middle of the second treatment tank 3, completing the entire water purification process. During this stage, the air valve 307 at the top of the bell-shaped tank 302 is closed, and the bell-shaped tank 302 is filled with air to form an air seal. The water level in the sedimentation tank 301 is lower than the top of the bell-shaped tank 302, preventing wastewater from entering the bell-shaped tank 302.

[0051] III. Siphon Sludge Removal and Self-Cleaning Linkage Stage

[0052] As the device operates for an extended period, the sludge accumulated at the bottom of the sedimentation tank 301 gradually increases in volume and thickness, and the impurities trapped on the surface and in the gaps of the first filter balls 10 inside the first elastic mesh cylinder 8 gradually become saturated. At this point, the control system or operator opens the air valve 307, and the air sealed inside the bell-shaped cylinder 302 is rapidly discharged through the exhaust pipe 306. After the air pressure inside the bell-shaped cylinder 302 decreases, under the hydrostatic pressure of the water in the sedimentation tank 301, the sewage and concentrated sludge at the bottom rapidly rush into the bell-shaped cylinder 302 and fill its inner cavity, then enter the top inlet of the drain pipe 303, instantly triggering a siphon effect. The powerful siphon suction continuously draws the high-concentration sludge mixture from the bottom of the sedimentation tank 301 into the bell-shaped cylinder 302 and discharges it out at high speed through the drain pipe 303.

[0053] The high-speed flowing sewage inside the drain pipe 303 impacts the blades 603 at the bottom of the rotating rod 6, driving the rotating rod 6 to rotate around its axis. The rotational motion of the rotating rod 6 simultaneously generates two self-cleaning actions:

[0054] The first cleaning action—filter ball agitation: Several agitating rods 601 at the top of the rotating rod 6 rotate and agitate the first filter balls 10 inside the first elastic mesh cylinder 8. The agitation of the agitating rods 601 causes relative displacement, collision, and friction between the first filter balls 10, which promotes the peeling and precipitation of impurities attached to the surface of the first filter balls 10 and accumulated in the gaps, restores the filtration flux of the first filter balls 10, and effectively prevents the filter layer from caking.

[0055] The second cleaning action – filter cleaning: When the water in the drain pipe 303 flows at high speed through the opening at the bottom of the hollow rod 602, a negative pressure is generated in the inner cavity of the hollow rod 602 based on the Venturi effect. This negative pressure is transmitted to the inner cavity of the cleaning frame 605 through the inner cavity of the hollow rod 602 and the right-angle tube 604. At the same time, the rotating rod 6 drives the cleaning frame 605 to make a circular motion along the surface of the annular filter screen 503. The bristles at the bottom of the cleaning frame 605 brush up the impurities trapped on the annular filter screen 503. The negative pressure in the inner cavity of the cleaning frame 605 draws in the brushed impurities in real time. The impurities enter the hollow rod 602 along with the airflow or residual liquid flow along the right-angle tube 604, and finally flow into the drain pipe 303 and are discharged outside the device.

[0056] When the water level in the sedimentation tank 301 drops below the bottom opening of the bell jar 302, air enters the bell jar 302, and the siphon effect automatically terminates. The air valve 307 is closed, and the device returns to the normal filtration and sedimentation stage, awaiting the next siphon sludge discharge cycle. This cycle repeats continuously, achieving fully automatic, zero-energy-consumption, interconnected operation of filtration, sedimentation, sludge discharge, and self-cleaning.

[0057] All components of this invention are general standard parts or parts known to those skilled in the art. Their structure and principles are readily known to those skilled in the art through technical manuals or conventional experimental methods. It is obvious to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this invention is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water purification device for water pollution treatment, comprising a first treatment cylinder (2) and a second treatment cylinder (3), characterized in that, The top of the first processing cylinder (2) is detachably fitted with a top cover plate (201), and a water inlet pipe (202) is installed in the center of the top cover plate (201). The bottom of the second processing cylinder (3) is fitted with a sewage pipe (303). The bottom of the first processing cylinder (2) is detachably fitted with the top of the second processing cylinder (3). The bottom inner cavity of the first processing cylinder (2) is connected to the top inner cavity of the second processing cylinder (3). The lower part of the inner cavity of the first processing cylinder (2) is equipped with a receiving cylinder (4), the inner wall of the receiving cylinder (4) is equipped with an annular disinfection lamp plate (401), the inner cavity of the receiving cylinder (4) is equipped with a first elastic mesh cylinder (8), the first elastic mesh cylinder (8) is filled with a first filter ball (10), the inner bottom surface of the receiving cylinder (4) is provided with an annular groove (403), and a number of drain pipes (404) are evenly distributed around the bottom circumference of the annular groove (403). A control valve (406) is installed at the top of the inner cavity of the drain pipe (404). A re-filtration assembly (5) is installed in the upper part of the inner cavity of the second processing cylinder (3). The bottom end of the drain pipe (404) extends into the inner cavity of the re-filtration assembly (5). A sedimentation cylinder (301) is installed at the bottom of the inner cavity of the second processing cylinder (3). The inner diameter of the sedimentation cylinder (301) gradually decreases from top to bottom. A bell jar cylinder (302) is installed in the upper part of the inner cavity of the sedimentation cylinder (301). An exhaust pipe (304) is installed on one side of the top of the bell jar cylinder (302). 06), one end of the exhaust pipe (306) extends to the outside of the second processing cylinder (3) and is equipped with an air valve (307). There is a distance between the bottom end of the bell cylinder (302) and the inner bottom surface of the sedimentation cylinder (301). The top end of the sewage pipe (303) extends to the middle of the inner cavity of the bell cylinder (302). A water outlet pipe (304) is installed on one side of the middle part of the second processing cylinder (3). An exhaust pipe (308) is provided above the water outlet pipe (304). A rotating rod (6) is mounted on the center axis of the inner cavity of the second processing cylinder (3) via a mounting bracket (12). The bottom end of the rotating rod (6) extends to the upper part of the inner cavity of the sewage pipe (303) and a number of blades (603) are installed on the outer wall of the end. The top end of the rotating rod (6) extends into the first elastic mesh cylinder (8) and a number of stirring rods (601) are installed on the outer wall of the end. A first sealing bearing sleeve (305) and a second sealing bearing sleeve (405) are respectively installed at the center of the top end of the bell jar cylinder (302) and the center of the bottom end of the receiving cylinder (4). The lower and upper parts of the rotating rod (6) are respectively rotatably fitted inside the first sealing bearing sleeve (305) and the second sealing bearing sleeve (405).

2. The water purification device for water pollution treatment according to claim 1, characterized in that, There is a distance between the outer wall of the first elastic mesh cylinder (8) and the inner wall of the receiving cylinder (4). A second elastic mesh cylinder (9) is also installed inside the receiving cylinder (4). The outer wall of the second elastic mesh cylinder (9) is in contact with the inner wall of the receiving cylinder (4). A second filter ball (11) is filled between the inner wall of the second elastic mesh cylinder (9) and the outer wall of the first elastic mesh cylinder (8). The diameter and filter hole size of the second filter ball (11) are smaller than those of the first filter ball (10).

3. A water purification device for water pollution treatment according to claim 2, characterized in that, The first elastic mesh cylinder (8) has an annular edge layer (801) connected to the top edge, and a circular ring plate (802) connected to the bottom center of the first elastic mesh cylinder (8). The inner wall of the circular ring plate (802) slides against the outer wall of the rotating rod (6). The second elastic mesh cylinder (9) adopts the same structure as the first elastic mesh cylinder (8).

4. A water purification device for water pollution treatment according to claim 3, characterized in that, The top of the receiving cylinder (4) is equipped with a clamping assembly (7). The clamping assembly (7) includes an annular base (701) installed at the top of the receiving cylinder (4), a first clamping plate (702) detachably installed at the top of the annular base (701), and a second clamping plate (703) detachably installed at the top of the first clamping plate (702). The top inner circumference of the annular base (701) is provided with a first clamping groove (704), and the top inner circumference of the first clamping plate (702) is provided with a second clamping groove (705). The inner bottom surface of the first clamping groove (704), the bottom end of the first clamping plate (702), the inner bottom surface of the second clamping groove (705), and the bottom end of the second clamping plate (703) are all provided with an anti-slip layer (706). The top edge of the first elastic mesh cylinder (8) is clamped in the second clamping groove (705), and the top edge of the second elastic mesh cylinder (9) is clamped in the first clamping groove (704).

5. A water purification device for water pollution treatment according to claim 1, characterized in that, The re-filtration assembly (5) includes a first cylindrical tube (501) disposed on the outer periphery of the middle part of the rotating rod (6), a second cylindrical tube (502) disposed on the outer periphery of the first cylindrical tube (501), and an annular filter screen (503) installed between the outer wall of the first cylindrical tube (501) and the inner wall of the second cylindrical tube (502). The bottom end of the drain pipe (404) extends between the outer wall of the first cylindrical tube (501) and the inner wall of the second cylindrical tube (502), and is located above the annular filter screen (503).

6. A water purification device for water pollution treatment according to claim 5, characterized in that, The lower half of the rotating rod (6) is a hollow rod (602). A right-angle tube (604) is detachably installed on the top outer wall of the hollow rod (602). The lower part of the right-angle tube (604) extends to the space between the outer wall of the first cylindrical tube (501) and the inner wall of the second cylindrical tube (502). A cleaning frame (605) is installed at the bottom end of the right-angle tube (604). The length of the cleaning frame (605) corresponds to the ring width of the annular filter disc (503). The bottom end of the cleaning frame (605) slides against the top end of the annular filter disc (503). The inner cavity of the cleaning frame (605) is connected to the inner cavity of the hollow rod (602) through the right-angle tube (604).

7. A water purification device for water pollution treatment according to claim 1, characterized in that, A support block (203) is installed on the upper inner wall of the inner cavity of the first processing cylinder (2). A conical ring plate (204) is placed on the support block (203). The inner circumference of the bottom end of the conical ring plate (204) is connected to the outer circumference of the bottom end of the conical filter plate (205).

8. A water purification device for water pollution treatment according to claim 7, characterized in that, A disc (207) is installed at the top of the conical filter plate (205), and a diffuser cone (206) is installed at the center of the top of the disc (207). The diffuser cone (206) is located directly below the bottom of the water inlet pipe (202).

9. A water purification device for water pollution treatment according to claim 1, characterized in that, It also includes a support cylinder (1), on which a number of legs (101) are evenly distributed around the bottom circumference, and a driving wheel (102) is installed at the bottom of the legs (101). The bottom of the second processing cylinder (3) is placed in the inner cavity of the support cylinder (1).

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