A groundwater filtration and purification device and method

Abstract

The present application provides a kind of groundwater filtering and purifying device, including the fixed pipeline of horizontal arrangement and the rotating pipeline being communicated with fixed pipeline, fixed pipeline has water inlet, rotating pipeline has filter hole, rotating pipeline outside is equipped with backflushing component, backflushing component is used to utilize filter water and carry out from outside to inside washing to the filter hole of rotating pipeline surface, backflushing component has the drain outlet for the discharge of dirt in rotating pipeline.The present application also provides a kind of groundwater filtering and purifying method, uses the purifying device as above, realizes the cleaning of filter hole by backflushing component, along with the filtered water of groundwater being filtered, the filtered water can flow along the surface of rotating pipeline, in this process, filter water passes through filter hole to achieve the effect of backwashing, greatly reduces the probability of filter hole blockage, and along with the rotation of rotating pipeline relative to fixed pipeline, more effectively washes away the pollutant adhered in filter hole, guarantees filtering effect, while prolongs service life.

Description

Technical Field

[0001] This invention relates to the field of groundwater filtration technology, specifically to a groundwater filtration and purification device and method. Background Technology

[0002] Currently, most rural residents still rely on groundwater extraction for water use. However, when using heavily polluted groundwater, rural residents are easily susceptible to illnesses caused by harmful substances in the water. Furthermore, the filter media in some devices has a short lifespan and is prone to clogging, leading to a rapid decline in filtration efficiency and requiring frequent replacement or cleaning, which increases operating and maintenance costs.

[0003] The currently disclosed Chinese patent CN214990715U discloses a filtration device for groundwater purification, comprising a housing. An electrical control mechanism is fixedly connected to the outer wall of one end of the housing. A motor is fixedly connected to the top of the housing. A rotating shaft is rotatably connected to the inner wall of the housing. The top of the rotating shaft is fixedly connected to the motor. A third filter plate is rotatably connected to the outer wall of the rotating shaft. The outer wall of the third filter plate is fixedly connected to the inner wall of the housing. A liquid inlet mechanism is provided at the top of the third filter plate, and a liquid collection plate is provided at the bottom of the third filter plate. The liquid collection plate is rotatably connected to... The treatment tube has a top fixed connection to a rotating shaft, a filter screen fixedly connected to the top of its outer wall, a rotating filter mechanism on its inner wall, an activated carbon core at the bottom of the rotating filter mechanism, a sealing cap at the bottom of the treatment tube, bolts threaded to the outer walls of both ends of the sealing cap, a second outlet pipe fixedly connected to the outer walls of both ends of the sealing cap, multiple RO reverse osmosis membranes fixedly connected to the inner walls of the second outlet pipe, a collection tank fixedly connected to the bottom of the tank, and a first outlet pipe fixedly connected to the bottom of the collection tank.

[0004] According to the aforementioned patent, the patent introduces groundwater into the tank through an inlet mechanism, performs primary filtration of the groundwater through a third filter plate, guides the groundwater into the treatment pipe through a collection plate, further filters the groundwater through a rotating filter mechanism and activated carbon core within the treatment pipe, and finally filters the groundwater through multiple RO reverse osmosis membranes within a second outlet pipe. However, the patent does not clearly explain how to effectively prevent the clogging and aging of the filter material. The filtration efficiency may gradually decrease over time, requiring frequent maintenance and replacement of filter elements. Therefore, a clogging-resistant filtration structure is needed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a water quality monitoring device and method for water treatment aeration tanks. The device achieves automatic cleaning of filter holes through a backwashing component. As groundwater is filtered through the filter holes, the filtered water flows along the surface of a rotating pipe. During this process, the filtered water passes through the filter holes, achieving a backwashing effect, significantly reducing the probability of filter hole clogging. Furthermore, the rotation of the rotating pipe relative to the fixed pipe more effectively flushes away contaminants adhering to the filter holes, ensuring filtration efficiency while extending the equipment's service life. To achieve the above objectives, this invention adopts the following technical solution: A groundwater filtration and purification device includes a horizontally arranged fixed pipe and a rotating pipe connected to the fixed pipe. The fixed pipe has a water inlet, the rotating pipe has filter holes, and a backwashing assembly is provided on the outside of the rotating pipe. The backwashing assembly is used to flush the filter holes on the surface of the rotating pipe from the outside to the inside using filtered water. The backwashing assembly has a drain outlet for discharging dirt from the rotating pipe.

[0006] Preferably, the backwash assembly is provided with a water filter pipe for backwashing the filter holes by the flow of filtered water. A storage space for temporarily storing filtered water is formed between the water filter pipe and the rotating pipe. The bottom of the water filter pipe has an outlet. One end of the water filter pipe has a ring sleeve that is fixedly connected to the fixed pipe. The other end of the water filter pipe has an end sleeve that is rotatably connected to the rotating pipe. The backwash assembly has a drain port that is opened at the lower end of the end sleeve and communicates with the rotating pipe.

[0007] Preferably, the end sleeve is also provided with a first backflush port that communicates with the drain outlet and the filter pipe. The direction of the filter water discharged from the first backflush port is parallel to the axial direction of the rotating pipe. When the filter water is discharged through the first backflush port, the filter water is in a state of flowing along the surface of the rotating pipe.

[0008] Preferably, the filter holes on the rotating pipe are located in the rear half away from the fixed pipe, and the outer surface of the rotating pipe with filter holes is an inclined surface, which gradually increases in elevation from a position away from the first backflush port to a position close to the first backflush port.

[0009] Preferably, a second backflush port is provided at the top of the water filter pipe and directly opposite the filter hole, and a number of fan blades are evenly provided around the rotating pipe. The fan blades can drive the rotating pipe to rotate through the water flow sprayed from the second backflush port.

[0010] Preferably, a pressure device is provided on the outside of the rotating pipe in the storage space. The pressure device is used to enhance the filtration force through the filter holes. The pressure device has a ring structure and is sleeved on the rotating pipe. The outside of the pressure device slides in contact with the inner wall of the water filtration pipe. A compression spring is fixedly connected between the pressure device and the ring.

[0011] Preferably, a spiral extrusion rod is coaxially provided in the rotating pipe. One end of the spiral extrusion rod is rotatably connected to the end sleeve, and the other end of the spiral extrusion rod extends toward the fixed pipe. The spiral blades on the spiral extrusion rod contact the inner wall of the rotating pipe.

[0012] Preferably, the screw extruder has a dosing channel that extends through both ends, the dosing channel being used to inject water purification agent into a fixed pipeline.

[0013] Preferably, a swirl vane is fixed at the end of the screw extruder near the fixed pipe, and the screw extruder is rotating when the groundwater passes through the swirl vane.

[0014] Preferably, a rod extending toward the spiral extrusion rod is fixed in the fixed pipe, the extended end of the rod having an outer cover that covers the end of the spiral extrusion rod, and the end of the spiral extrusion rod having a support block that slides in contact with the inner wall of the outer cover.

[0015] The present invention also provides a technical solution: A groundwater filtration and purification method, using the purification device described above, includes the following steps: Groundwater is introduced into the rotating pipe through an inlet on a fixed pipe. The groundwater flows from the fixed pipe to the rotating pipe and is filtered through filter holes on the surface of the rotating pipe. The filter holes can block and capture particulate matter and impurities in the groundwater. When backwashing is required on the filter holes of the rotating pipe, both the inlet and outlet are closed, and water enters through the second backwash port until the filter water in the storage space reaches saturation. This is when the pressure device is squeezed and triggers the contact switch. At this point, the first backwash port is opened, the second backwash port remains in the inlet state, and the first backwash port remains in the outlet state. This achieves the backwashing effect on the filter holes as the filter water is discharged through the inclined surface on the rotating pipe. At the same time, the filter water entering through the second backwash port also achieves the backwashing effect on the filter holes. Under the action of the fan blades, the rotating pipe is rotated, achieving the effect of rinsing each filter hole. As the water pressure entering through the second backwash port gradually decreases, the compression spring gradually returns to its unforced state. At this time, the filter water in the storage space increases the impact pressure under the pressure of the pressure device, making the filter water more effectively impact the filter holes when passing through the inclined surface. This continues until the second backwash port closes, completing the rinsing process. Some of the backwashed filter water and contaminants are discharged from the drain port together, achieving effective rinsing from the outside to the inside and removing impurities from the filter holes. During the backwashing process, when the water flow drives the spiral extrusion rod to rotate through the swirl blades on the spiral extrusion rod, the controller keeps the rotating pipe stationary. The spiral blades on the spiral extrusion rod contact the inner wall of the rotating pipe, which can actively push solid particles or suspended matter in the groundwater toward the discharge outlet, ensuring a normal material pushing process. When the rotating pipe needs to rotate, that is, when the water sprayed from the second backwash port acts on the surface of the rotating pipe, the controller releases the fixed state of the rotating pipe. The rotation action can make the water flow more evenly distributed on the surface of the rotating pipe, especially around the filter holes, thereby achieving all-round and more effective filter hole flushing from the outside to the inside. After backwashing, the dirt flushed out of the filter holes enters the rotating pipe and is eventually discharged through the drain port of the backwash unit, keeping it clean.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention achieves automatic cleaning of filter holes through a backwashing component. As groundwater is filtered through the filter holes, the filtered water flows along the surface of the rotating pipe. During this process, the filtered water achieves a backwashing effect through the filter holes, greatly reducing the probability of filter hole clogging. Furthermore, as the rotating pipe rotates relative to the fixed pipe, it more effectively flushes away pollutants attached to the filter holes, ensuring the filtration effect while extending the service life of the equipment.

[0017] 2. By rationally adjusting the water flow rate, this invention can ensure the normal discharge of filtered clean water from the outlet, while also allowing some filtered water to be discharged through the first backwash port to backwash the filter holes on the rotating pipe. Since the filtered water flows parallel to the axis of the rotating pipe, it can fully and evenly flush each filter hole, effectively removing particles and impurities inside the filter holes, keeping the filter holes unobstructed, effectively solving the problem of filter hole blockage, and eliminating the need for additional water sources for flushing, thus reducing the consumption of flushing water.

[0018] 3. The present invention designs an inclined surface on the filter hole section of the rotating pipe, so that when the filtered water flows along the outer wall of the rotating pipe through the first backflushing port, the filtered water can gain additional potential energy. By impacting the filter hole with the inclined surface, the impact force on the filter hole is increased, thereby achieving efficient rinsing of the filter hole from the outside to the inside, effectively removing particulate matter and impurities attached to the inside of the filter hole.

[0019] 4. This invention designs a second backwash port at the top of the water filter pipe, directly opposite the filter holes. Filtered water is then used to flush the filter holes. The water flow directly impacts the fan blades and the outer surface of the rotating pipe, causing the rotating pipe to rotate while impacting the filter holes. This promotes the flow of water from the outside of the filter holes to the inside, achieving a backwashing effect, improving the cleaning efficiency of the filter holes, and effectively preventing filter hole blockage. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural schematic diagram of the purification device according to an embodiment of the present invention; Figure 2 This is a partial three-dimensional structural cross-sectional view of the purification device according to an embodiment of the present invention; Figure 3 This is a planar sectional view of the purification device according to an embodiment of the present invention; Figure 4 yes Figure 3 Enlarged view of point A; Figure 5 yes Figure 3 Enlarged view of point B; Figure 6 This is a three-dimensional structural diagram of the purification device without the filter pipe in an embodiment of the present invention; Figure 7 This is an exploded three-dimensional structural diagram of the purification device of the present invention, excluding the water filter pipe. Figure 8 This is a top view of the purification device of the present invention, excluding the water filter pipe; Figure 9 yes Figure 8 A planar sectional view at point CC; Figure 10 yes Figure 8 A three-dimensional structural cross-sectional view at point CC.

[0021] In the above figures: 1. Fixed pipe; 11. Inlet; 12. Rod; 121. Outer cover; 122. Support block; 2. Rotating pipe; 21. Filter hole; 22. Inclined surface; 221. Fan blade; 3. Backflush assembly; 31. Filter pipe; 311. Ring; 312. End sleeve; 3121. Drain outlet; 32. Storage space; 33. Outlet; 34. First backflush port; 35. Second backflush port; 4. Pressure device; 41. Compression spring; 42. Contact switch; 5. Spiral extrusion rod; 51. Additive channel; 52. Quality detector; 6. Swirl blade. Detailed Implementation

[0022] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See Figures 1-4As shown, a groundwater filtration and purification device includes a horizontally arranged fixed pipe 1 and a rotating pipe 2 connected to the fixed pipe 1. The fixed pipe 1 has a water inlet 11, and the rotating pipe 2 has filter holes 21. A backwash assembly 3 is provided on the outside of the rotating pipe 2. The backwash assembly 3 is used to flush the filter holes 21 on the surface of the rotating pipe 2 from the outside to the inside using filtered water. The backwash assembly 3 has a drain outlet 3121 for discharging dirt from the rotating pipe 2.

[0024] In the groundwater treatment process, groundwater is first introduced into the fixed pipe 1 through the inlet 11. The groundwater flows from the fixed pipe 1 to the rotating pipe 2 and is filtered through the filter holes 21 on the surface of the rotating pipe 2. The filter holes 21 can block and capture particulate matter and impurities in the groundwater. The rotating pipe 2 rotates continuously during operation, using centrifugal force and water flow to help improve filtration efficiency and prevent the filter holes 21 from clogging. The backwash component 3 plays a key role in the filtration process. When it is necessary to clean the filter holes 21, the filtered clean water is used to apply a reverse water flow to the filter holes 21 on the surface of the rotating pipe 2 through the backwash component 3. This reverse water flow impacts from the outside to the inside of the filter holes 21, washing away the dirt attached to the inside of the filter holes 21 and removing it from the filter holes 21, thereby realizing the automatic cleaning function of the filter holes 21. After backwashing, the dirt washed off from the filter holes 21 will enter the rotating pipe 2 and finally be discharged through the drain port 3121 of the backwash component 3, keeping it clean.

[0025] See Figures 2-4 As shown, the backwash assembly 3 is provided with a water filter pipe 31 for backwashing the filter holes 21 by the flow of filtered water. A storage space 32 for temporarily storing filtered water is formed between the water filter pipe 31 and the rotating pipe 2. The bottom of the water filter pipe 31 has a water outlet 33. One end of the water filter pipe 31 has a ring sleeve 311 that is fixedly connected to the fixed pipe 1. The other end of the water filter pipe 31 has an end sleeve 312 that is rotatably connected to the rotating pipe 2. The backwash assembly 3 has a drain port 3121 that is opened at the lower end of the end sleeve 312 and communicates with the rotating pipe 2.

[0026] During the filtration process, groundwater enters the filter pipe 31 through the filter hole 21. The filtered water flows in the storage space 32 formed between the filter pipe 31 and the rotating pipe 2, and is discharged at the outlet 33 at the bottom of the filter pipe 31. The filtered clean water is discharged from the outlet 33. After filtration for a period of time, the dirt inside the rotating pipe 2 is discharged from the drain outlet 3121 along with some of the water flow, thus realizing the normal discharge of filtered water and the effective discharge of dirt.

[0027] See Figures 2-4As shown, the end sleeve 312 is also provided with a first backflush port 34 that communicates with the drain port 3121 and the filter pipe 31. The direction of the filter water discharged by the first backflush port 34 is parallel to the axis of the rotating pipe 2. When the filter water is discharged through the first backflush port 34, the filter water is in a state of flowing along the surface of the rotating pipe 2.

[0028] When backwashing is required on the filter holes 21 of the rotating pipe 2, the drain port 3121 is connected to the drain pump. Since the first backwash port 34 and the drain port 3121 are connected, the outlet 33 is closed, and some of the filtered clean water is temporarily stored in the storage space 32. Opening the drain port 3121 allows the filtered water to enter the drain port 3121 from the first backwash port 34 and be discharged along with the contaminants. The filtered water flows along the outer wall of the rotating pipe 2 and reaches the first backwash port 34. The filtered water is discharged from the first backwash port 34 in a direction parallel to the axis of the rotating pipe 2. At this time, the flow of the filtered water along the outer wall of the rotating pipe 2 causes the blockage in the filter holes 21 to be squeezed inward. Since the filtered water is flushing from the outside to the inside of the filter holes 21, an effective backwashing effect is formed on the filter holes 21 of the rotating pipe 2. Because the filtered water flows in a direction parallel to the axis of the rotating pipe 2, it can fully and evenly backwash the filter holes 21. The backwashing process evenly flushes each filter hole 21 on the outer wall of the rotating pipe 2, effectively removing particles and impurities accumulated inside the filter holes 21 and maintaining the filtration efficiency of the filter holes 21. Through the backwashing design, the outlet 33 can discharge filtered water normally without stopping the filtration operation, while a portion of the filtered water is discharged from the first backwash port 34. Some of the filtered water flows along the surface of the rotating pipe 2, which can achieve a backwashing effect on the clogged filter holes 21. Alternatively, when the filtration operation is stopped, the outlet 33 stops discharging filtered water, and a portion of the filtered water temporarily stored in the storage space 32 is discharged from the first backwash port 34. The filtered water flows along the surface of the rotating pipe 2, which can also achieve a backwashing effect on the clogged filter holes 21, thus preventing the filter holes 21 from becoming clogged. The backwashing method can maximize the use of the flushing force of the filtered water, improve the utilization efficiency of water resources, and reduce the consumption of additional flushing water.

[0029] See Figures 2-4 As shown, the filter holes 21 on the rotating pipe 2 are located in the rear half away from the fixed pipe 1. The outer surface of the rotating pipe 2 with filter holes 21 is an inclined surface 22. The inclined surface 22 gradually rises from a position away from the first backflush port 34 to a position close to the first backflush port 34.

[0030] When the first backwash port 34 discharges filtered water, the inclined surface 22 of the rotating pipe 2 with filter holes 21 is designed so that when the filtered water impacts the filter holes 21, it can utilize the impact force of the water flow and gravity. When the filtered water passes through the inclined surface 22, it impacts the outer wall of the rotating pipe 2 with greater force. Specifically, when the filtered water passes through the inclined surface 22, the water flow will gain additional potential energy due to the presence of the inclined surface 22. When the water flow impacts the filter holes 21, its impact force is greatly enhanced compared to the planar structure. This allows the filtered water to flush the inside of the filter holes 21 more deeply and powerfully, achieving an effective flushing effect from the outside to the inside of the filter holes 21. This greatly improves the cleaning effect of the filter holes 21 and reduces the possibility of clogging of the filter holes 21.

[0031] See Figures 2-4 and Figures 6-10 As shown, a second backflush port 35 is provided at the top of the water filter pipe 31 and directly opposite the filter hole 21. Several fan blades 221 are evenly arranged around the rotating pipe 2. The fan blades 221 can drive the rotating pipe 2 to rotate through the water flow sprayed from the second backflush port 35.

[0032] The fan blades 221 are positioned to avoid the filter holes 21. Both ends of the rotating pipe 2 are connected to the fixed pipe 1 and the end sleeve 312 via ball bearings. When backwashing is required, water is sprayed inward through the second backwash port 35 located at the top of the filter pipe 31, directly opposite the filter holes 21. This water is filtered water, which is recycled. The water flow directly impacts the outer surface of the rotating pipe 2 and the fan blades 221 evenly distributed around the rotating pipe 2. The fan blades 221 begin to rotate under the impact of the water flow, thereby driving the entire rotating pipe 2 to rotate around its axis. Due to the connection between the rotating pipe 2 and the fixed pipe 1 and the end sleeve 312... The use of ball bearings ensures that the rotating pipe 2 rotates smoothly and without obstruction, reducing friction loss. Furthermore, since the fan blades 221 are designed to avoid the filter holes 21, the filter holes 21 can effectively filter groundwater. The water flows along the surface of the fan blades 221 towards the filter holes 21 and impacts them. The rotation of the fan blades 221 also drives the water around the filter holes 21 to flow, forming a vortex-like water flow. This helps to dynamically flush the filter holes 21 from the outside in, effectively preventing the filter holes 21 from clogging and improving the cleanliness and filtration efficiency of the filter holes 21.

[0033] See Figure 2 , Figure 3 and Figure 5As shown, a pressure device 4 is provided on the outside of the rotating pipe 2 in the storage space 32. The pressure device 4 is used to enhance the filtration force through the filter hole 21. The pressure device 4 has a ring structure. The pressure device 4 is sleeved on the rotating pipe 2 and the outside of the pressure device 4 slides in contact with the inner wall of the water filtration pipe 31. A compression spring 41 is fixedly connected between the pressure device 4 and the ring 311. The ring 311 is also equipped with a contact switch 42 for controlling the opening and closing of the first backwash port 34. During groundwater filtration and purification, when it is necessary to increase the force of the filtered water passing through the filter holes 21, the pressure device 4 applies additional pressure to the filtered water through the compression spring 41, so that the filtered water has greater penetrating force when passing through the filter holes 21 from the outside to the inside, thereby improving the filtration efficiency and the cleaning effect on the filter holes 21. The contact switch 42 on the ring 311 can control the opening and closing of the first backwash port 34. When backwashing is required, both the inlet 11 and the outlet 33 are closed, and water enters the second backwash port 35 until the filtered water in the storage space 32 reaches saturation, that is, when the pressure device 4 is squeezed and triggers the contact switch 42, the first backwash port 34 is opened, and the second backwash port 35 remains in the water-entering state. Maintaining the water outlet state ensures that the filtered water, during its discharge, achieves a backwashing effect on the filter holes 21 via the inclined surface 22 on the rotating pipe 2. Simultaneously, the filtered water entering through the second backwash port 35 also achieves a backwashing effect on the filter holes 21. Under the action of the fan blades 221, the rotating pipe 2 rotates, achieving the effect of rinsing each filter hole 21. As the inlet water pressure of the second backwash port 35 gradually decreases, the compression spring 41 gradually returns to its unforced state. At this time, the filtered water in the storage space 32 increases the impact pressure under the pressure of the pressure device 4, making the filtered water more effectively impact the filter holes 21 when passing through the inclined surface 22, until the second backwash port 35 closes, completing the rinsing process. Some of the backwashed filtered water and contaminants are discharged together from the drain port 3121, achieving effective rinsing from the outside to the inside and removing impurities from the filter holes 21.

[0034] See Figure 2 , Figure 3 , Figure 9 and Figure 10 As shown, a spiral extrusion rod 5 is coaxially provided in the rotating pipe 2. One end of the spiral extrusion rod 5 is rotatably connected to the end sleeve 312, and the other end of the spiral extrusion rod 5 extends toward the fixed pipe 1. The spiral blades on the spiral extrusion rod 5 are in contact with the inner wall of the rotating pipe 2.

[0035] A controller is provided between the end sleeve 312 and the rotating pipe 2 to control the movement of the rotating pipe 2. The controller is not shown in the figure. When the screw extrusion rod 5 rotates, the controller controls the rotating pipe 2 to be stationary. The screw blades on the screw extrusion rod 5 contact the inner wall of the rotating pipe 2, which can actively push solid particles or suspended matter in the groundwater toward the discharge port 3121 to ensure the normal feeding process. When the rotating pipe 2 needs to rotate, that is, when the water sprayed from the second backflushing port 35 acts on the surface of the rotating pipe 2, the controller releases the fixed state of the rotating pipe 2. The rotation action can make the water flow more evenly distributed on the surface of the rotating pipe 2, especially around the filter holes 21, thereby realizing all-round and more effective flushing of the filter holes 21 from the outside to the inside, reducing the clogging of the filter holes 21, and improving the cleanliness and filtration efficiency of the filter holes 21.

[0036] See Figure 2 and Figure 3 As shown, the spiral extruder 5 has an additive channel 51 that runs through both ends, and the additive channel 51 is used to inject water purification agent into the fixed pipe 1.

[0037] A mass detector 52 is installed at the bottom of the fixed pipe 1 at the position corresponding to the water inlet 11. The mass detector 52 is used to detect the concentration of pollutants in the groundwater. The addition channel 51 with both ends of the spiral extrusion rod 5 is designed so that the water purification agent can be directly injected into the fixed pipe 1 through this channel to achieve precise mixing with the groundwater. Based on the concentration of pollutants in the groundwater detected by the mass detector 52 at the water inlet 11 at the bottom of the fixed pipe 1, the appropriate amount of water purification agent can be accurately calculated and controlled to achieve the best purification effect.

[0038] See Figure 2 and Figure 3 As shown, a swirl vane 6 is fixed at the end of the spiral extrusion rod 5 near the fixed pipe 1. When the groundwater passes through the swirl vane 6, the spiral extrusion rod 5 is in a rotating state.

[0039] When groundwater passes through the swirl blades 6 fixed at the end of the spiral extrusion rod 5, the spiral extrusion rod 5 is driven to rotate by the kinetic energy of the water flow itself, rather than by an additional power source, thus reducing the energy consumption of operation.

[0040] See Figure 2 and Figure 3 As shown, a rod 12 extending toward the spiral extrusion rod 5 is fixed in the fixed pipe 1. The extended end of the rod 12 has an outer cover 121 that covers the end of the spiral extrusion rod 5. The end of the spiral extrusion rod 5 has a support block 122 that slides in contact with the inner wall of the outer cover 121.

[0041] The support block 122 at the end of the spiral extrusion rod 5 slides in contact with the inner wall of the outer cover 121, making the rotation process of the spiral extrusion rod 5 more stable, preventing the spiral extrusion rod 5 from vibrating, and ensuring the smooth pushing of impurities.

[0042] The present invention also provides a technical solution: A groundwater filtration and purification method, see [link to relevant documentation] Figures 1-10 As shown, using the purification device described above includes the following steps: Groundwater is introduced into the fixed pipe 1 through the inlet 11. The groundwater flows from the fixed pipe 1 to the rotating pipe 2 and is filtered through the filter holes 21 on the surface of the rotating pipe 2. The filter holes 21 can block and capture particulate matter and impurities in the groundwater. When backwashing is required on the filter holes 21 of the rotating pipe 2, both the inlet 11 and outlet 33 are closed, and water enters through the second backwash port 35 until the filtered water in the storage space 32 reaches saturation. This occurs when the pressure device 4 is squeezed, triggering the contact switch 42. At this point, the first backwash port 34 is opened, the second backwash port 35 remains in the inlet state, and the first backwash port 34 remains in the outlet state. This ensures that the filtered water, during its discharge, passes through the inclined surface 22 on the rotating pipe 2 to achieve a backwashing effect on the filter holes 21. Simultaneously, the filtered water entering through the second backwash port 35 also achieves a backwashing effect on the filter holes 21. The fan blades 221 drive the rotating pipe 2 to rotate, achieving the effect of rinsing each filter hole 21. As the water pressure at the second backwash port 35 gradually decreases, the compression spring 41 gradually returns to a state without external force. At this time, the filter water in the storage space 32 increases the impact pressure under the pressure of the pressure device 4, making the filter water more effective in impacting the filter holes 21 when passing through the inclined surface 22, until the second backwash port 35 closes, completing the rinsing process. Some of the backwashed filter water and contaminants are discharged together from the drain port 3121, achieving effective rinsing from the outside to the inside and removing impurities from the filter holes 21. During the backwashing process, when the water flow drives the spiral extrusion rod 5 to rotate through the swirl blades 6 on the spiral extrusion rod 5, the controller controls the rotating pipe 2 to remain stationary. The spiral blades on the spiral extrusion rod 5 contact the inner wall of the rotating pipe 2, which can actively push solid particles or suspended matter in the groundwater toward the discharge port 3121 to ensure the normal material pushing process. When the rotating pipe 2 needs to rotate, that is, when the water sprayed from the second backwash port 35 acts on the surface of the rotating pipe 2, the controller releases the fixed state of the rotating pipe 2. The rotation action can make the water flow more evenly distributed on the surface of the rotating pipe 2, especially around the filter holes 21, thereby achieving all-round and more effective flushing of the filter holes 21 from the outside to the inside. After backwashing, the dirt flushed down from the filter holes 21 will enter the rotating pipe 2 and eventually be discharged through the drain port 3121 of the backwash assembly 3, keeping it clean.

[0043] This invention achieves automatic cleaning of the filter holes 21 through the backwash component 3. As groundwater is filtered by the filter holes 21, the filtered water can be discharged along the surface of the rotating pipe 2. In this process, the filtered water achieves the backwashing effect through the filter holes 21, which greatly reduces the probability of the filter holes 21 becoming clogged. As the rotating pipe 2 rotates relative to the fixed pipe 1, it more effectively washes away the pollutants attached to the filter holes 21, ensuring the filtration effect while extending the service life of the equipment.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A groundwater filtration and purification device, characterized in that, It includes a fixed pipe (1) arranged horizontally and a rotating pipe (2) connected to the fixed pipe (1); The fixed pipe (1) has an inlet (11); The outer wall of the rotating pipe (2) has filter holes (21); A backwash assembly (3) is provided on the outside of the rotating pipe (2). The backwash assembly (3) is used to flush the filter holes (21) on the surface of the rotating pipe (2) from the outside to the inside using filtered water. The backflush assembly (3) has a drain outlet (3121) for discharging contaminants from the rotating pipe (2). The backwash assembly (3) is provided with a water filter pipe (31) for backwashing the filter holes (21) by the flow of filtered water. A storage space (32) for temporarily storing filtered water is formed between the water filter pipe (31) and the rotating pipe (2). The bottom of the water filter pipe (31) has an outlet (33). One end of the water filter pipe (31) has a ring sleeve (311) that is fixedly connected to the fixed pipe (1). The other end of the water filter pipe (31) has an end sleeve (312) that is rotatably connected to the rotating pipe (2). The backwash assembly (3) has a drain outlet (3121) that is opened at the lower end of the end sleeve (312) and is connected to the rotating pipe (2). The end sleeve (312) is also provided with a first backflush port (34) that communicates with the drain port (3121) and the filter pipe (31). The direction of the filter water discharged by the first backflush port (34) is parallel to the axis of the rotating pipe (2). When the filter water is discharged through the first backflush port (34), the filter water is in a state of flowing along the surface of the rotating pipe (2). A second backflush port (35) is provided at the top of the water filter pipe (31) and directly opposite the filter hole (21). A pressure device (4) is provided on the outside of the rotating pipe (2) in the storage space (32). The pressure device (4) is used to enhance the filtering force to pass through the filter hole (21). The pressure device (4) has a ring structure. The pressure device (4) is sleeved on the rotating pipe (2) and the outside of the pressure device (4) slides in contact with the inner wall of the water filtering pipe (31). A compression spring (41) is fixedly connected between the pressure device (4) and the ring (311). The ring (311) is also provided with a contact switch (42) for controlling the opening and closing of the first backwash port (34). The contact switch (42) provided on the ring (311) can control the opening and closing of the first backwash port (34). When backwashing is required, the inlet (11) and outlet (33) are both closed, and the second backwash port (35) is filled with water until the filtered water in the storage space (32) reaches saturation. That is, when the pressure device (4) is squeezed and triggers the contact switch (42), the first backwash port (34) is opened, the second backwash port (35) remains in the inlet state, and the first backwash port (34) remains in the outlet state.

2. The groundwater filtration and purification device according to claim 1, characterized in that, The filter holes (21) on the rotating pipe (2) are located in the rear half away from the fixed pipe (1). The outer surface of the rotating pipe (2) with filter holes (21) is an inclined surface (22). The inclined surface (22) gradually rises from a position away from the first backflush port (34) to a position close to the first backflush port (34).

3. The groundwater filtration and purification device according to claim 2, characterized in that, The rotating pipe (2) is evenly provided with several fan blades (221) around its body. The fan blades (221) can drive the rotating pipe (2) to rotate through the water flow sprayed from the second backflow port (35).

4. The groundwater filtration and purification device according to claim 3, characterized in that, A spiral extrusion rod (5) is coaxially provided in the rotating pipe (2). One end of the spiral extrusion rod (5) is rotatably connected to the end sleeve (312), and the other end of the spiral extrusion rod (5) extends toward the fixed pipe (1). The spiral blades on the spiral extrusion rod (5) are in contact with the inner wall of the rotating pipe (2).

5. The groundwater filtration and purification device according to claim 4, characterized in that, The screw extruder (5) has an additive channel (51) that runs through both ends. The additive channel (51) is used to inject water purification agent into the fixed pipe (1). A swirl vane (6) is fixed at the end of the screw extruder (5) near the fixed pipe (1). When the groundwater passes through the swirl vane (6), the screw extruder (5) is in a rotating state.

6. The groundwater filtration and purification device according to claim 5, characterized in that, A rod (12) extending toward a spiral extrusion rod (5) is fixed in a fixed pipe (1). The extended end of the rod (12) has an outer cover (121) that covers the end of the spiral extrusion rod (5). The end of the spiral extrusion rod (5) has a support block (122) that slides in contact with the inner wall of the outer cover (121).

7. A method for filtering and purifying groundwater, characterized in that, Using the purification device as described in claim 6 includes the following steps: Groundwater is introduced into the fixed pipe (1) through the inlet (11). The groundwater flows from the fixed pipe (1) to the rotating pipe (2) and is filtered through the filter holes (21) on the surface of the rotating pipe (2). The filter holes (21) can block and capture particulate matter and impurities in the groundwater. When backwashing is required on the filter holes (21) on the rotating pipe (2), both the inlet (11) and outlet (33) are closed, and water enters through the second backwash port (35) until the filtered water in the storage space (32) reaches saturation. That is, when the pressure device (4) is squeezed and triggers the contact switch (42), the first backwash port (34) is opened, the second backwash port (35) remains in the inlet state, and the first backwash port (34) remains in the outlet state. This achieves the backwashing effect on the filter holes (21) through the inclined surface (22) on the rotating pipe (2) during the discharge process, and at the same time, the filtered water entering through the second backwash port (35) also achieves backwashing on the filter holes (21). The effect is that the rotating pipe (2) is driven to rotate under the action of the fan blade (221), so that each filter hole (21) can be flushed. As the water pressure of the second backflushing port (35) gradually decreases, the compression spring (41) gradually returns to the state of not being subjected to external force. At this time, the filter water in the storage space (32) increases the impact pressure under the squeezing of the pressure device (4), so that the filter water can more effectively impact the filter hole (21) when passing through the inclined surface (22) until the second backflushing port (35) is closed, and the flushing process is completed. Some of the backflushing filter water and pollutants are discharged from the drain port (3121) together, realizing effective flushing from the outside to the inside and removing impurities in the filter hole (21). During the backwashing process, when the water flow drives the spiral extrusion rod (5) to rotate through the swirl blades (6) on the spiral extrusion rod (5), the controller controls the rotating pipe (2) to be stationary. The spiral blades on the spiral extrusion rod (5) contact the inner wall of the rotating pipe (2), which can actively push the solid particles or suspended matter in the groundwater toward the discharge port (3121) to ensure the normal feeding process. When the rotating pipe (2) needs to rotate, that is, when the water sprayed from the second backwash port (35) acts on the surface of the rotating pipe (2), the controller releases the fixed state of the rotating pipe (2). The rotation action can make the water flow more evenly distributed on the surface of the rotating pipe (2), thereby achieving all-round and more effective flushing of the filter holes (21) from the outside to the inside. After backwashing, the dirt flushed down from the filter holes (21) will enter the rotating pipe (2) and eventually be discharged through the drain port (3121) of the backwash assembly (3) to keep it clean.

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