A V-shaped filter tank capable of automatic cleaning and a cleaning method thereof

Abstract

The application discloses a V-shaped filter tank capable of being automatically cleaned and a cleaning method thereof, and relates to the field of V-shaped filter tanks. In the prior art, the impurities falling off in the filter material layer move upward to the water surface, the surface sweeps water to discharge the impurities into a drain groove, and the cleaning water continuously sweeps the water surface in the whole cleaning process, which wastes a large amount of cleaning water. The upper end of the V-shaped filter tank body is provided with a moving driving mechanism, the moving driving mechanism comprises fixed vertical plates, a first rotating rod body is arranged at the rear end between the two fixed vertical plates, a second threaded portion is arranged on one side of the outer side surface of the first rotating rod body, a second rotating rod body is arranged at the front end between the two fixed vertical plates, a first threaded portion is arranged on the other side of the outer side surface of the second rotating rod body, and a second driving motor is mounted on the outer side of one of the fixed vertical plates and located at one end of the first rotating rod body.

Description

Technical Field

[0001] This invention relates to the field of V-type filters, specifically to an automatically cleanable V-type filter and its cleaning method. Background Technology

[0002] V-type filters are a type of rapid air-water backwashing filter. The combination of air and water backwashing, along with constant lateral surface sweeping, results in excellent rinsing performance and significantly reduced water volume. The most distinctive feature of V-type filters is the introduction of air washing during the rinsing process. The entire rinsing process is carried out in three steps: ① Single air washing: Loosens the entire filter bed, allowing contaminants that are difficult to remove during water rinsing to be removed under the high shear force of rapidly rising air bubbles; ② Combined air-water rinsing: Air rinsing intensifies the collision and friction between filter media particles, and the shearing effect on the surface of the filter media particles is also fully utilized during water rinsing, enhancing the water rinsing efficiency; ③ Water rinsing: Single water rinsing carries away the detached impurities from the filter media.

[0003] For example, the Chinese authorized patent (V-type filter) with publication number CN 205127534 U includes a filter body, a water inlet device, and a drainage device. The water inlet device is equipped with an inlet valve, and the drainage device is equipped with a drain valve. The inlet valve and the drain valve are either gate valves or butterfly valves. This utility model eliminates the sweeping water inlet hole of the existing structure and directly uses the opening of the gate valve or butterfly valve to adjust the surface sweeping water volume. The adjustment process can be automatically controlled. Gate valves and butterfly valves are commonly used valves in the water industry. They have many accessories, are easy to maintain, and have low cost. Gate valves or butterfly valves can directly adjust the water flow rate, making them convenient and easy to control.

[0004] Although the aforementioned existing technology has the function of adjusting the surface sweeping water by using the valve opening, the impurities that fall off in the filter media layer move upward to the water surface, and the surface sweeping water discharges the impurities into the drainage trough. During the entire cleaning process, the sweeping water continuously washes the water surface, which wastes a lot of sweeping water. Summary of the Invention

[0005] The purpose of this invention is to provide an automatically cleanable V-shaped filter and its cleaning method, in order to solve the problem mentioned in the background art where impurities falling off the filter media layer move upward to the water surface, and the surface sweeping water discharges the impurities into the drainage trough. During the entire cleaning process, the sweeping water continuously washes the water surface, which wastes a lot of sweeping water.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatically cleanable V-shaped filter, comprising a V-shaped filter body, a moving drive mechanism at the upper end of the V-shaped filter body, the moving drive mechanism comprising fixed plates, a first rotating rod at the rear end between two fixed plates, a second threaded portion on one side of the outer surface of the first rotating rod, a second rotating rod at the front end between the two fixed plates, a first threaded portion on the other side of the outer surface of the second rotating rod, a second drive motor mounted on one side of the outer side of one fixed plate along one end of the first rotating rod, and a first drive motor mounted on the other side of the outer side of the fixed plate along one end of the second rotating rod, sliding blocks on both sides of the outer surfaces of the first and second rotating rods, one sliding block being slidably connected to the second rotating rod, and the other sliding block being threadedly connected to the second threaded portion. On the other side, the sliding block is slidably connected to the first rotating rod body, and on the other side, the sliding block is threadedly connected to the first threaded part. A first driving cylinder is installed at the lower end of the sliding block. An automatic cleaning mechanism is provided at the output rod end of the first driving cylinder. The automatic cleaning mechanism includes a fixed plate, which is fixed to the output rod end of the first driving cylinder. A cleaning push plate is provided on the inner side of the lower end of the fixed plate. The fixed plate and the cleaning push plate are rotatably connected through a first rotating component. A second driving cylinder is installed on the outer side of the lower end of the fixed plate. The second driving cylinder and the fixed plate, as well as the output rod end of the second driving cylinder and the cleaning push plate, are rotatably connected through a second rotating component. A first fixed inclined plate is welded and fixed to the lower end of the inner side of the cleaning push plate. A water leakage groove is arrayed on the first fixed inclined plate, and the water leakage groove penetrates the first fixed inclined plate. A second fixed inclined plate is welded and fixed to the side of the first fixed inclined plate away from the cleaning push plate.

[0007] Preferably, an inlet trough is provided at the upper end of both sides inside the V-shaped filter body, and an air jet main pipe is installed at the rear end of the V-shaped filter body along the rear end of the inlet trough. Air jet branch pipes are arrayed inside the inlet trough and are connected to the air jet main pipe through a pipe. An air jet nozzle is installed at the other end of the air jet branch pipe.

[0008] Preferably, a vertical sliding plate is provided on the outer side of the cleaning push plate, and vertical grooves are provided at both ends of the outer side of the cleaning push plate. A vertical sliding part is provided at the corresponding position of the vertical sliding plate and the vertical groove. The cleaning push plate is slidably connected to the vertical sliding plate. A rectangular groove is provided in the middle of the outer side of the cleaning push plate. A meshing tooth is provided in the rectangular groove. Bearing seats are provided at both ends of the upper part of the vertical sliding plate. A drive gear is installed between the two bearing seats. The drive gear meshes with the meshing tooth. A third drive motor is installed at the rear end of the rear bearing seat along the rear end of the drive gear. An air intake manifold is arrayed at the upper end of the outer side of the vertical sliding plate. The other end of the air intake manifold is connected to the main air intake manifold through a pipe. An exhaust pipe is arrayed at the lower end of the outer side of the vertical sliding plate. A one-way flow valve is installed on the exhaust pipe. A flow channel is provided inside the vertical sliding plate between the exhaust pipe and the air intake manifold. A through groove is provided on the outer side of the vertical sliding plate between the upper and lower rows of exhaust pipes. The lower end face of the through groove is an inclined part.

[0009] Preferably, the V-shaped filter body has vertical partition walls integrally connected to the two sides in the middle of the interior. The upper part of the V-shaped filter body along the outer side of the vertical partition walls is provided with a filter media layer and a filter plate. The filter media layer is located at the upper end of the filter plate. The lower part of the V-shaped filter body along the outer side of the vertical partition walls is provided with an air-water distribution chamber. A long-handled filter head is installed on the filter plate. The long-handled filter head connects the filter media layer and the air-water distribution chamber.

[0010] Preferably, the long-handled filter head includes a filter head, which includes an inner filter head and an outer filter head. The space between the inner filter head and the outer filter head is a mixing chamber. The outer surface of the inner filter head has water distribution holes, and the outer surface of the outer filter head has air distribution holes. The lower end of the outer filter head is integrally connected to an outer tube body. The upper end of the outer tube body is provided with a connecting part. The lower end of the inner filter head is integrally connected to an inner tube body. The lower end of the inner tube body extends to the outside of the outer tube body. The interior of the inner filter head and the inner tube body is configured as a water chamber. The interior of the outer tube body is configured as an air chamber along the outside of the inner tube body. The middle of the lower end face of the inner tube body is configured as a water inlet hole. The outer tube body is provided with an air inlet hole. A partition ring is provided between the mixing chamber and the air chamber. A one-way flow pipe is installed in the partition ring. The medium in the one-way flow pipe flows from the air chamber to the mixing chamber.

[0011] Preferably, a clean water discharge pipe is installed at the lower end of the front end of the air-water distribution chamber, and a backwash water pipe is installed on the clean water discharge pipe through a T-connector. A backwash air pipe is installed at the upper end of the front end of the air-water distribution chamber. Ventilation holes are arrayed along the upper end of the air-water distribution chamber and the air-water distribution chamber support on the vertical partition wall, and water passage holes are arrayed along the lower end of the air-water distribution chamber and the air-water distribution chamber support on the vertical partition wall.

[0012] Preferably, an inclined feeding plate is provided in the middle between the two vertical partition walls, an impurity discharge chamber is provided between the two vertical partition walls along the upper end of the inclined feeding plate, an air-water distribution chamber is provided between the two vertical partition walls along the lower end of the inclined feeding plate, a waste discharge pipe is installed at the rear end of the impurity discharge chamber, a waste storage box is provided at the lower end of the rear end of the V-shaped filter body, and the other end of the waste discharge pipe extends into the interior of the waste storage box.

[0013] Preferably, the rear end of the water inlet tank is connected to a main water inlet pipe via a water inlet branch pipe, and control valves are installed on the main air jet pipe, the main water inlet pipe, the clean water discharge pipe, the backwash water pipe, the backwash air pipe, and the waste discharge pipe.

[0014] A cleaning method includes the following steps:

[0015] Step 1: Open the control valve on the main water inlet pipe. The water flows through the main water inlet pipe into the water inlet tank, and then flows down into the filter media layer. The filter media layer filters the water. After filtration, the water enters the air-water distribution chamber through the long-handled filter head, then flows into the air-water distribution chamber, and finally flows out through the clean water discharge pipe.

[0016] Step Two: Air Washing. Gas enters the air-water distribution chamber through a pump and backwash pipe, then flows into the air-water distribution room through the vent, and overflows upwards into the filter media layer through the long-handled filter head. The output rod of the first drive cylinder extends, driving the first fixed inclined plate into the water body. The third drive motor drives the drive gear to rotate, causing the vertical sliding plate to move downwards along the cleaning push plate into the filter media layer. Gas enters the vertical sliding plate through a pump and the main air inlet pipe and branch air inlet pipe, and then is ejected horizontally through the exhaust pipe. The first drive motor and the second drive motor drive the first rotating rod and the second rotating rod to rotate respectively, causing the sliding block to slide towards the middle position, and the filter media to move through the through groove.

[0017] Step 3: Combined air and water flushing. While air washing is being done in step 2, water washing is introduced. The control valve on the clean water discharge pipe is closed, and the control valve on the backwash water pipe is opened. The backwash water enters the air and water distribution chamber through the pump and the backwash water pipe. It enters the air and water distribution chamber through the water inlet and overflows upward through the long-handled filter head into the filter media layer for water flushing.

[0018] Step 4: Water flushing. Only introduce water flow, close the control valve on the clean water discharge pipe, open the control valve on the backwash water pipe, and the backwash water enters the air-water distribution chamber through the pump and the backwash water pipe. It then enters the air-water distribution chamber through the water inlet and overflows upwards into the filter media layer through the long-handled filter head for water flushing.

[0019] Step 5: During Step 2 and Step 3, as the sliding block slides towards the center position, it drives the first fixed inclined plate and the second fixed inclined plate to move and sweep away the impurities brought out.

[0020] Step Six: During Step Four, the output rod of the first drive cylinder is always extended, keeping the fixed inclined plate in the water body. The third drive motor drives the drive gear to rotate, causing the vertical sliding plate to move upward along the cleaning push plate to the top. The first drive motor and the second drive motor drive the first rotating rod and the second rotating rod to rotate respectively, and the sliding block slides to the middle position, driving the first fixed inclined plate and the second fixed inclined plate to move and clean the impurities brought out by the air washing.

[0021] Step 7: When Step 5 and Step 6 are working, after the sliding block moves to the middle position, the output rod of the first drive cylinder retracts, and the first and second fixed inclined plates move away from the water body; the output rod of the second drive cylinder retracts, and the tilting of the cleaning push plate causes the first and second fixed inclined plates to tilt. The external equipment sprays gas through the jet main pipe, jet branch pipe and jet nozzle. The gas blows the impurities into the impurity discharge chamber through the water leakage tank.

[0022] Step 8: Impurities are discharged at an angle through the inclined feeding plate and enter the impurity storage box through the impurity discharge pipe.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. In this invention, the first drive motor and the second drive motor respectively drive the first rotating rod and the second rotating rod to rotate. The sliding block slides to the middle position. While the sliding block slides to the middle position, it drives the first fixed inclined plate and the second fixed inclined plate to move and sweep away the impurities. After the sliding block moves to the middle position, the output rod of the first drive cylinder retracts, and the first fixed inclined plate and the second fixed inclined plate move away from the water body. The output rod of the second drive cylinder retracts, and the tilting of the cleaning push plate causes the first fixed inclined plate and the second fixed inclined plate to tilt. The external equipment sprays gas through the jet main pipe, jet branch pipe and jet nozzle. The gas blows the impurities to the impurity discharge chamber through the water leakage channel. That is, the traditional cleaning water outlet is removed, and a ventilation structure is set at the upper end of this position. The movement of the structure is used to clean the impurities, and the pressure of the sprayed airflow is used to remove the impurities and some water. Since no cleaning water is introduced, the waste of cleaning water is avoided. This solves the problem that in the current method, impurities that fall off the filter layer move upward to the water surface, and the surface sweeping water discharges the impurities into the drainage channel. During the entire cleaning process, the cleaning water continuously sweeps the water surface, which wastes a lot of cleaning water.

[0025] 2. In this invention, during air washing and combined air-water rinsing, in addition to the lower air intake rinsing in the prior art, an auxiliary air washing structure is also provided; the output rod of the first drive cylinder extends to drive the first fixed inclined plate into the water body, and the third drive motor drives the drive gear to rotate, so that the vertical sliding plate moves downward along the cleaning push plate into the filter media layer. The gas enters the vertical sliding plate through the pumping action and the main air intake pipe and the branch air intake pipe, and then is sprayed out horizontally through the exhaust pipe. That is, the horizontal gas is provided, which can make up for the blind spots of vertical flow gas rinsing, and the collision between the horizontal and vertical gas will cause it to flow to the outside at a faster speed, resulting in a better air washing effect.

[0026] 3. In this invention, during the air washing process, the first drive motor and the second drive motor drive the first rotating rod and the second rotating rod to rotate respectively, the sliding block slides to the middle position, and the filter material moves through the through groove, which drives the filter material to move, increases the contact area between the gas and the filter material, and the movement of the filter material will also cause some impurities adhering to its surface to be removed by friction, thereby improving the working efficiency of air washing.

[0027] 4. In this invention, the air chamber and water chamber of the long-handled filter head are separated. During filtration, water enters the air distribution hole and then the mixing chamber. Blocked by the separating ring and the one-way flow pipe, the water flows out through the water distribution hole and the water chamber. During air washing, combined air-water rinsing, and water flushing, gas enters the air chamber through the air inlet, then exits into the mixing chamber through the one-way flow pipe, and finally exits through the air distribution hole. Water enters the water chamber through the water inlet, then enters the mixing chamber through the water distribution hole, and finally exits through the air distribution hole. Throughout the entire process, water cannot enter the air chamber, and gas cannot enter the water chamber, thus increasing the speed of water and air intake and avoiding the simultaneous influence of the internal filter media on both water and gas. Attached Figure Description

[0028] Figure 1 This is a vertical cross-sectional view of an automatically cleanable V-shaped filter according to the present invention.

[0029] Figure 2 This is a longitudinal sectional view of a self-cleaning V-shaped filter according to the present invention.

[0030] Figure 3 This is a cross-sectional view of a long-handled filter head for an automatically cleanable V-shaped filter bed according to the present invention.

[0031] Figure 4 This is a three-dimensional structural diagram of a moving drive mechanism for an automatically cleanable V-shaped filter according to the present invention.

[0032] Figure 5 This is a front view of an automatic cleaning mechanism for a V-shaped filter bed that can be automatically cleaned according to the present invention.

[0033] Figure 6This is a schematic diagram of the connection structure between the cleaning push plate and the vertical sliding plate of an automatically cleanable V-shaped filter according to the present invention.

[0034] Figure 7 This is a schematic diagram of the connection structure of a cleaning push plate, a first fixed inclined plate, and a second fixed inclined plate in a V-shaped filter bed that can be automatically cleaned according to the present invention.

[0035] In the diagram: 1. V-shaped filter body; 2. Moving drive mechanism; 3. Fixed vertical plate; 4. First rotating rod; 5. Second rotating rod; 6. First threaded part; 7. Second threaded part; 8. First drive motor; 9. Second drive motor; 10. Sliding block; 11. First drive cylinder; 12. Automatic cleaning mechanism; 13. Fixed plate; 14. Cleaning push plate; 15. First rotating component; 16. Vertical sliding plate; 17. Second drive cylinder; 18. Second rotating component; 19. Rectangular groove; 20. Meshing teeth; 21. Drive gear; 22. Third drive motor; 23. Bearing seat; 24. Vertical slide groove; 25. Vertical sliding part; 26. Main air inlet pipe; 27. Branch air inlet pipe; 28. Exhaust pipe; 29. ​​One-way flow valve; 30. Through groove; 31. Inclined part; 32. First fixed inclined plate; 33. 34. Second fixed inclined plate; 35. Water leakage trough; 36. Air jet main pipe; 37. Air jet branch pipe; 38. Air jet nozzle; 39. Water inlet main pipe; 40. Water inlet trough; 41. Filter media layer; 42. Filter plate; 43. Air-water distribution chamber; 44. Long-handled filter head; 45. Vertical partition wall; 46. Inclined discharge plate; 47. Air-water distribution cavity; 48. Impurity discharge cavity; 49. Clean water discharge pipe; 50. Backwash water pipe; 51. Backwash air pipe; 52. Vent hole; 53. Water inlet hole; 54. Waste discharge pipe; 55. Waste storage box; 56. Filter head; 57. Connecting part; 58. Outer pipe body; 59. Inner pipe body; 60. Water inlet hole; 61. Air chamber; 62. Water chamber; 63. Inner filter head; 64. Outer filter head; 65. Water distribution hole; 66. Air distribution hole; 67. Mixing chamber; 68. Separating ring; 69. One-way flow pipe. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] Please see Figure 1-7This invention provides an embodiment of an automatically cleanable V-shaped filter, comprising a V-shaped filter body 1. Two V-shaped filter bodies 1 are shown in the figure, designed so that one can continue filtering water while the other is being cleaned. One body is sufficient if continuous filtration is not required; however, multiple bodies are needed for large-scale filtration projects, and each body is cleaned sequentially. A moving drive mechanism 2 is provided at the upper end of the V-shaped filter body 1. The moving drive mechanism 2 includes fixed vertical plates 3. A first rotating rod 4 is located at the rear end between the two fixed vertical plates 3. A second threaded portion 7 is provided on one side of the outer surface of the first rotating rod 4. A second rotating rod 5 is located at the front end between the two fixed vertical plates 3. A first threaded portion 6 is provided on the other side of the outer surface of the second rotating rod 5. A second drive motor 9 is installed along one end of the first rotating rod 4 on the outer side of one fixed vertical plate 3, and a first drive motor 8 is installed along one end of the second rotating rod 5 on the outer side of the other fixed vertical plate 3. The outer sides of the first rotating rod 4 and the second rotating rod 5 are... A sliding block 10 is provided. One side of the sliding block 10 is slidably connected to the second rotating rod body 5 and is threadedly connected to the second threaded part 7. The other side of the sliding block 10 is slidably connected to the first rotating rod body 4 and is threadedly connected to the first threaded part 6. A first driving cylinder 11 is installed at the lower end of the sliding block 10. An automatic cleaning mechanism 12 is provided at the output rod end of the first driving cylinder 11. The automatic cleaning mechanism 12 includes a fixing plate 13, which is fixed to the output rod end of the first driving cylinder 11. A cleaning push plate 14 is provided on the inner side of the lower end of the fixing plate 13. The fixing plate 13 and the cleaning push plate 14 are connected by a first rotating rod body 5 and a second rotating rod body 6. The component 15 is rotatably connected. A second drive cylinder 17 is installed on the outer side of the lower end of the fixed plate 13. The second drive cylinder 17 and the fixed plate 13, as well as the output rod end of the second drive cylinder 17 and the cleaning push plate 14, are rotatably connected through a second rotating component 18. A first fixed inclined plate 32 is welded and fixed to the lower end of the inner side of the cleaning push plate 14. A water leakage groove 34 is arrayed on the first fixed inclined plate 32, and the water leakage groove 34 penetrates the first fixed inclined plate 32. A second fixed inclined plate 33 is welded and fixed to the side of the first fixed inclined plate 32 away from the cleaning push plate 14. A water inlet groove 39 is provided at the upper end of both sides inside the V-shaped filter body 1. The rear end of the V-shaped filter body 1 is connected along the water inlet groove 39. A jet manifold 35 is installed at the rear end, and jet branch pipes 36 are arrayed inside the water inlet tank 39. The jet branch pipes 36 are connected to the jet manifold 35 through a pipe. A jet nozzle 37 is installed at the other end of the jet branch pipe 36. Vertical partition walls 44 are integrally connected on both sides of the middle of the V-shaped filter body 1. A filter media layer 40 and a filter plate 41 are set at the upper end of the outer side of the vertical partition wall 44 inside the V-shaped filter body 1. The filter media layer 40 is located at the upper end of the filter plate 41. An air-water distribution chamber 42 is set at the lower end of the outer side of the vertical partition wall 44 inside the V-shaped filter body 1. A long-handled filter head 43 is installed on the filter plate 41. The long-handled filter head 43 connects the filter media layer 40 and the air-water distribution chamber 42.A clean water discharge pipe 48 is installed at the lower end of the front end of the air-water distribution chamber 46. A backwash water pipe 49 is installed on the clean water discharge pipe 48 via a T-connector. A backwash air pipe 50 is installed at the upper end of the front end of the air-water distribution chamber 46. Ventilation holes 51 are arrayed along the upper end of the support of the air-water distribution chamber 42 and the air-water distribution chamber 46 on the vertical partition wall 44. Water passage holes 52 are arrayed along the lower end of the support of the air-water distribution chamber 42 and the air-water distribution chamber 46 on the vertical partition wall 44. The middle section between the two vertical partition walls 44... An inclined discharge plate 45 is provided between two vertical partition walls 44, with an impurity discharge chamber 47 located at the upper end of the inclined discharge plate 45. An air-water distribution chamber 46 is located between the two vertical partition walls 44, with a waste discharge pipe 53 installed at the rear end of the impurity discharge chamber 47. A waste storage tank 54 is located at the lower rear end of the V-shaped filter body 1. The other end of the waste discharge pipe 53 extends into the waste storage tank 54. The rear end of the water inlet trough 39 is connected to a main water inlet pipe 38 via a water inlet pipe.

[0038] Control valves are installed on the jet manifold 35, water inlet manifold 38, clean water outlet manifold 48, backwash water manifold 49, backwash air manifold 50, and waste discharge manifold 53.

[0039] Please see Figure 1 and Figure 6A vertical sliding plate 16 is provided on the outer side of the cleaning push plate 14. Vertical grooves 24 are provided at both the front and rear ends of the outer side of the cleaning push plate 14. Vertical sliding parts 25 are provided at corresponding positions of the vertical sliding plate 16 and the vertical grooves 24. The cleaning push plate 14 and the vertical sliding plate 16 are slidably connected. A rectangular groove 19 is provided in the middle of the outer side of the cleaning push plate 14. A meshing tooth part 20 is provided in the rectangular groove 19. Bearing seats 23 are provided at both the front and rear ends of the upper end of the vertical sliding plate 16. A drive gear 21 is installed between the two bearing seats 23. The drive gear 21 meshes with the meshing gear 20. A third drive motor 22 is mounted on the rear end of the rear bearing housing 23 along the rear end of the drive gear 21. An air intake manifold 27 is arrayed on the upper outer side of the vertical sliding plate 16. The other end of the air intake manifold 27 is connected to the main air intake pipe 26 through a pipe. An exhaust pipe 28 is arrayed on the lower outer side of the vertical sliding plate 16. A one-way flow valve 29 is installed on the exhaust pipe 28. A flow channel is provided inside the vertical sliding plate 16 between the exhaust pipe 28 and the air intake manifold 27, for air washing and air-water washing. During combined rinsing, the output rod of the first drive cylinder 11 extends, driving the first fixed inclined plate 32 into the water body. The third drive motor 22 drives the drive gear 21 to rotate, causing the vertical sliding plate 16 to move downward along the cleaning push plate 14 into the filter media layer 40. Gas enters the vertical sliding plate 16 through pumping and is then sprayed out laterally through the exhaust pipe 28. This provides lateral gas flow, which can fill the blind spots of vertical gas flow rinsing. Furthermore, the collision between lateral and vertical gas causes it to flow outward at a faster speed, resulting in better air washing. A through groove 30 is provided on the outer side of the vertical sliding plate 16 between the upper and lower rows of exhaust pipes 28. The lower end face of the through groove 30 is an inclined part 31. During air washing, the first drive motor 8 and the second drive motor 9 drive the first rotating rod 4 and the second rotating rod 5 to rotate, respectively. The sliding block 10 slides towards the middle position, and the filter media moves through the through groove 30, thereby increasing the contact area between the gas and the filter media. The movement of the filter media also causes some impurities adhering to its surface to be removed by friction, improving the working efficiency of air washing.

[0040] 1. Perform normal water filtration.

[0041] Open the control valve on the main water inlet pipe 38, and the water flows through the main water inlet pipe 38 into the water inlet tank 39. It then flows downward through the water inlet tank 39 into the filter media layer 40, where the filter media layer 40 filters the water. After filtration, the water enters the air-water distribution chamber 42 through the long-handled filter head 43, then flows into the air-water distribution cavity 46, and finally flows out through the clean water discharge pipe 48.

[0042] 2. Backwashing

[0043] 2-1. Air washing loosens the entire filter bed, allowing stubborn dirt to be removed under the high shear force of rapidly rising air bubbles.

[0044] Gas enters the gas-water distribution chamber 46 through a pump and backwash pipe 50, then enters the gas-water distribution chamber 42 through vent 51, and overflows upwards into the filter media layer 40 through the long-handled filter head 43. The output rod of the first drive cylinder 11 extends, driving the first fixed inclined plate 32 into the water body. The third drive motor 22 drives the drive gear 21 to rotate, causing the vertical sliding plate 16 to move downwards along the cleaning push plate 14 into the filter media layer 40. Gas enters the vertical sliding plate 16 through a pump and the main air inlet pipe 26 and the branch air inlet pipe 27, and then is ejected laterally through the exhaust pipe 28. The first drive motor 8 and the second drive motor 9 drive the first rotating rod 4 and the second rotating rod 5 to rotate, and the sliding block 10 slides towards the middle position, allowing the filter media to move through the through groove 30.

[0045] As the sliding block 10 slides toward the middle position, it drives the first fixed inclined plate 32 and the second fixed inclined plate 33 to move and sweep away the impurities brought out.

[0046] After the sliding block 10 moves to the middle position, the output rod of the first drive cylinder 11 retracts, and the first fixed inclined plate 32 and the second fixed inclined plate 33 move away from the water body; the output rod of the second drive cylinder 17 retracts, and the tilt of the cleaning push plate 14 causes the first fixed inclined plate 32 and the second fixed inclined plate 33 to tilt. The external equipment sprays gas through the jet main pipe 35, the jet branch pipe 36 and the jet nozzle 37. The gas blows the impurities to the impurity discharge chamber 47 through the water leakage trough 34.

[0047] Impurities are discharged at an angle through the inclined feeding plate 45 and enter the impurity storage box 54 through the impurity discharge pipe 53;

[0048] The first drive motor 8 and the second drive motor 9 drive the first rotating rod 4 and the second rotating rod 5 to rotate respectively. The sliding block 10 slides outward. At this time, the output rod of the second drive cylinder 17 gradually extends, while the output rod of the first drive cylinder 11 remains in a retracted state. After moving to the outermost position, the operation of the first rotating rod 4, the second rotating rod 5, the first threaded part 6, the second threaded part 7, the first drive motor 8, the second drive motor 9, the sliding block 10, the first drive cylinder 11, and the automatic cleaning mechanism 12 is repeated, performing air separation cleaning and surface cleaning while the main air washing is being performed.

[0049] 2-2. Combined air and water flushing: Air flushing intensifies the collision and friction between filter media particles, while water flushing fully utilizes the shearing effect on the surface of the filter media particles, thus enhancing the flushing efficiency.

[0050] While air washing is being performed, water washing is introduced. The control valve on the clean water discharge pipe 48 is closed, and the control valve on the backwash water pipe 49 is opened. The backwash water enters the air-water distribution chamber 46 through the pump and the backwash water pipe 49, enters the air-water distribution chamber 42 through the water passage 52, and overflows upwards into the filter media layer 40 through the long-handled filter head 43 for water washing.

[0051] As the sliding block 10 slides toward the middle position, it drives the first fixed inclined plate 32 and the second fixed inclined plate 33 to move and sweep away the impurities brought out.

[0052] After the sliding block 10 moves to the middle position, the output rod of the first drive cylinder 11 retracts, and the first fixed inclined plate 32 and the second fixed inclined plate 33 move away from the water body; the output rod of the second drive cylinder 17 retracts, and the tilt of the cleaning push plate 14 causes the first fixed inclined plate 32 and the second fixed inclined plate 33 to tilt. The external equipment sprays gas through the jet main pipe 35, the jet branch pipe 36 and the jet nozzle 37. The gas blows the impurities to the impurity discharge chamber 47 through the water leakage trough 34.

[0053] Impurities are discharged at an angle through the inclined feeding plate 45 and enter the impurity storage box 54 through the impurity discharge pipe 53;

[0054] The first drive motor 8 and the second drive motor 9 drive the first rotating rod 4 and the second rotating rod 5 to rotate respectively. The sliding block 10 slides outward. At this time, the output rod of the second drive cylinder 17 gradually extends, while the output rod of the first drive cylinder 11 remains in a retracted state. After moving to the outermost position, the operation of the first rotating rod 4, the second rotating rod 5, the first threaded part 6, the second threaded part 7, the first drive motor 8, the second drive motor 9, the sliding block 10, the first drive cylinder 11, and the automatic cleaning mechanism 12 is repeated. During the main air wash and main water wash, the air separation wash and surface cleaning are performed simultaneously.

[0055] 2-3. Water rinsing: Water rinsing alone carries away the loosened impurities from the filter media.

[0056] Only water flow is introduced, the control valve on the clean water discharge pipe 48 is closed, and the control valve on the backwash water pipe 49 is opened. The backwash water enters the air-water distribution chamber 46 through the pump and the backwash water pipe 49, enters the air-water distribution chamber 42 through the water passage 52, and overflows upward into the filter media layer 40 through the long-handled filter head 43 for water rinsing.

[0057] The first drive motor 8 and the second drive motor 9 respectively drive the first rotating rod 4 and the second rotating rod 5 to rotate. The sliding block 10 slides to the middle position. While the sliding block 10 slides to the middle position, it drives the first fixed inclined plate 32 and the second fixed inclined plate 33 to move and clean up the impurities brought out.

[0058] After the sliding block 10 moves to the middle position, the output rod of the first drive cylinder 11 retracts, and the first fixed inclined plate 32 and the second fixed inclined plate 33 move away from the water body; the output rod of the second drive cylinder 17 retracts, and the tilt of the cleaning push plate 14 causes the first fixed inclined plate 32 and the second fixed inclined plate 33 to tilt. The external equipment sprays gas through the jet main pipe 35, the jet branch pipe 36 and the jet nozzle 37. The gas blows the impurities to the impurity discharge chamber 47 through the water leakage trough 34.

[0059] Impurities are discharged at an angle through the inclined feeding plate 45 and enter the impurity storage box 54 through the impurity discharge pipe 53;

[0060] The first drive motor 8 and the second drive motor 9 drive the first rotating rod 4 and the second rotating rod 5 to rotate respectively. The sliding block 10 slides outward. At this time, the output rod of the second drive cylinder 17 gradually extends, while the output rod of the first drive cylinder 11 remains in a retracted state. After moving to the outermost position, the operation of the first rotating rod 4, the second rotating rod 5, the first threaded part 6, the second threaded part 7, the first drive motor 8, the second drive motor 9, the sliding block 10, the first drive cylinder 11, and the automatic cleaning mechanism 12 is repeated to perform surface cleaning while the main water wash is being performed.

[0061] Please see Figure 3 The long-handled filter head 43 includes a filter head 55, which includes an inner filter head 63 and an outer filter head 64. The space between the inner filter head 63 and the outer filter head 64 is a mixing chamber 67. The outer surface of the inner filter head 63 has water distribution holes 65, and the outer surface of the outer filter head 64 has air distribution holes 66. The lower end of the outer filter head 64 is integrally connected to an outer tube body 57, and the upper end of the outer tube body 57 is provided with a connecting part 56. The lower end of the inner filter head 63 is integrally connected to an inner tube body 58, and the lower end of the inner tube body 58... Extending to the outside of the outer tube 57, the inner filter head 63 and the inside of the inner tube 58 are configured as a water chamber 62, the inside of the outer tube 57 along the outside of the inner tube 58 is configured as an air chamber 61, the middle of the lower end face of the inner tube 58 is configured as a water inlet 59, and an air inlet 60 is opened on the outer tube 57. A partition ring 68 is provided between the mixing chamber 67 and the air chamber 61, and a one-way flow pipe 69 is installed in the partition ring 68. The medium in the one-way flow pipe 69 flows from the air chamber 61 to the mixing chamber 67.

[0062] The air chamber 61 and water chamber 62 of the long-handled filter head 43 are separate. During filtration, water enters the air distribution hole 66 and then the mixing chamber 67. Blocked by the partition ring 68 and the one-way flow pipe 69, the water flows out through the water distribution hole 65 and the water chamber 62. During air washing, combined air-water rinsing, and water flushing, gas enters the air chamber 61 through the air inlet 60, then exits into the mixing chamber 67 through the one-way flow pipe 69, and finally exits through the air distribution hole 66. Water enters the water chamber 62 through the water inlet 59, enters the mixing chamber 67 through the water distribution hole 65, and finally exits through the air distribution hole 66. Throughout the process, water cannot enter the air chamber 61, and gas cannot enter the water chamber 62, increasing the speed of water and air intake and preventing the internal filter media from simultaneously affecting both water and gas.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A self-cleaning V-type filter tank comprising a V-type filter tank body (1), characterized in that: The upper end of the V-shaped filter tank body (1) is provided with a moving driving mechanism (2), the moving driving mechanism (2) comprises fixed vertical plates (3), the rear end between the two fixed vertical plates (3) is provided with a first rotating rod body (4), one side of the outer side of the first rotating rod body (4) is provided with a second threaded part (7), the front end between the two fixed vertical plates (3) is provided with a second rotating rod body (5), the other side of the outer side of the second rotating rod body (5) is provided with a first threaded part (6), the outer side of one side of the fixed vertical plate (3) is provided with a second driving motor (9) along one end of the first rotating rod body (4), the outer side of the other side of the fixed vertical plate (3) is provided with a first driving motor (8) along one end of the second rotating rod body (5), the outer sides of the first rotating rod body (4) and the second rotating rod body (5) are provided with sliding blocks (10), one side of the sliding block (10) is in sliding connection with the second rotating rod body (5), one side of the sliding block (10) is in threaded connection with the second threaded part (7), the other side of the sliding block (10) is in sliding connection with the first rotating rod body (4), and the other side of the sliding block (10) is in threaded connection with the first threaded part (6), the lower end of the sliding block (10) is provided with a first driving air cylinder (11), the output rod end of the first driving air cylinder (11) is provided with an automatic cleaning mechanism (12), the automatic cleaning mechanism (12) comprises a fixed plate (13), the fixed plate (13) is fixed with the output rod end of the first driving air cylinder (11), the inner side of the lower end of the fixed plate (13) is provided with a cleaning push plate (14), the fixed plate (13) is in rotary connection with the cleaning push plate (14) through a first rotating piece (15), the outer side of the lower end of the fixed plate (13) is provided with a second driving air cylinder (17), the fixed plate (13) and the output rod end of the second driving air cylinder (17) are in rotary connection with the cleaning push plate (14) through a second rotating piece (18), the lower end of the inner side of the cleaning push plate (14) is welded and fixed with a first fixed inclined plate (32), a plurality of water leakage grooves (34) are arranged on the first fixed inclined plate (32) and penetrate the first fixed inclined plate (32), and a second fixed inclined plate (33) is welded and fixed on the side, away from the cleaning push plate (14), of the first fixed inclined plate (32); the upper end of the inner side of the V-shaped filter tank body (1) is provided with a water inlet groove (39), a gas injection main pipe (35) is arranged at the rear end of the water inlet groove (39) of the rear end of the V-shaped filter tank body (1), a plurality of gas injection branch pipes (36) are arranged in the water inlet groove (39) in an array, the gas injection branch pipes (36) are in communication with the gas injection main pipe (35) through pipelines, and a gas injection nozzle (37) is arranged at the other end of the gas injection branch pipe (36).The outer side of the cleaning push plate (14) is provided with a vertical sliding plate (16), vertical sliding grooves (24) are formed in the front and rear ends of the outer side of the cleaning push plate (14), the vertical sliding plate (16) is provided with vertical sliding parts (25) at positions corresponding to the vertical sliding grooves (24), the cleaning push plate (14) is in sliding connection with the vertical sliding plate (16), a rectangular groove (19) is formed in the middle of the outer side of the cleaning push plate (14), the rectangular groove (19) is provided with meshing tooth parts (20), bearing seats (23) are arranged at the front and rear ends of the upper end of the vertical sliding plate (16), a drive gear (21) is arranged between the two bearing seats (23), the drive gear (21) is in engagement with the meshing tooth parts (20), a third drive motor (22) is arranged at the rear end of the rear end of the bearing seat (23) along the rear end of the drive gear (21), air inlet branch pipes (27) are arranged in an array at the upper end of the outer side of the vertical sliding plate (16), the other ends of the air inlet branch pipes (27) are connected with an air inlet main pipe (26) through pipes, air outlet pipes (28) are arranged in an array at the lower end of the outer side of the vertical sliding plate (16), one-way flow valves (29) are arranged on the air outlet pipes (28), a flow passage is arranged inside the vertical sliding plate (16) between the air outlet pipes (28) and the air inlet branch pipes (27), through grooves (30) are formed in the outer side of the vertical sliding plate (16) between the air outlet pipes (28) arranged in two rows in the upper and lower positions, the lower end surface of the through groove (30) is an inclined part (31); vertical partition walls (44) are integrally connected to the two sides of the middle of the inside of the V-shaped filter tank main body (1), a filter material layer (40) and a filter plate (41) are arranged inside the V-shaped filter tank main body (1) along the upper end of the outer side of the vertical partition wall (44), the filter material layer (40) is located at the upper end of the filter plate (41); when air washing and air-water combined flushing are carried out, the output rod of the first drive cylinder (11) is elongated to drive the first fixed inclined plate (32) to enter the water body, the third drive motor (22) drives the drive gear (21) to rotate, so that the vertical sliding plate (16) moves downward along the cleaning push plate (14) to enter the filter material layer (40), and gas enters the vertical sliding plate (16) through the pumping action and the air inlet main pipe (26) and the air inlet branch pipes (27), and is then transversely sprayed out through the air outlet pipes (28).

2. An automatically cleanable V-type filter tank according to claim 1, characterized in that: The V-shaped filter tank body (1) is provided with a gas-water distribution chamber (42) at the lower end of the outer side of the vertical partition wall (44) inside, the filter plate (41) is provided with a long handle filter head (43), and the long handle filter head (43) is communicated with the filter material layer (40) and the gas-water distribution chamber (42).

3. An automatically cleanable V-type filter tank according to claim 2, characterized in that: The long handle filter head (43) comprises a filter head (55), the filter head (55) comprises an inner filter head (63) and an outer filter head (64), the space between the inner filter head (63) and the outer filter head (64) is a mixing cavity (67), the outer surface of the inner filter head (63) is provided with a water distribution hole (65), the outer surface of the outer filter head (64) is provided with a gas distribution hole (66), the lower end of the outer filter head (64) is integrally connected with an outer pipe body (57), the upper end of the outer surface of the outer pipe body (57) is provided with a connecting part (56), the lower end of the inner filter head (63) is integrally connected with an inner pipe body (58), the lower end of the inner pipe body (58) extends to the outer surface of the outer pipe body (57), the inner filter head (63) and the inner pipe body (58) are provided with a water cavity (62) inside, the outer surface of the inner pipe body (58) is provided with a gas cavity (61) inside, the middle of the lower end surface of the inner pipe body (58) is provided with a water inlet hole (59), the outer pipe body (57) is provided with an air inlet hole (60), the mixing cavity (67) and the gas cavity (61) are provided with a separation ring (68), the separation ring (68) is provided with a one-way flow pipe (69), and the medium in the one-way flow pipe (69) flows from the gas cavity (61) to the mixing cavity (67).

4. An automatically cleanable V-type filter tank according to claim 2, characterized in that: The middle of the two vertical partition walls (44) is provided with an inclined discharging plate (45), the lower end of the inclined discharging plate (45) between the two vertical partition walls (44) is provided with a gas-water distribution cavity (46), the lower end of the front end of the gas-water distribution cavity (46) is provided with a clean water discharge pipe (48), the clean water discharge pipe (48) is provided with a backwashing water pipe (49) through a three-way pipe, the front end of the gas-water distribution cavity (46) is provided with a backwashing gas pipe (50), the upper end of the vertical partition wall (44) is provided with a ventilation hole (51) in an array along the gas-water distribution chamber (42) and the gas-water distribution cavity (46) support, and the lower end of the vertical partition wall (44) is provided with a water hole (52) in an array along the gas-water distribution chamber (42) and the gas-water distribution cavity (46) support.

5. An automatically cleanable V-type filter tank according to claim 4, characterized in that: The upper end of the inclined discharging plate (45) between the two vertical partition walls (44) is provided with a impurity discharge cavity (47), the rear end of the impurity discharge cavity (47) is provided with a impurity discharge pipe (53), and the lower end of the rear end of the V-shaped filter tank body (1) is provided with a impurity storage box (54), and the other end of the impurity discharge pipe (53) extends to the inside of the impurity storage box (54).

6. An automatically cleanable V-type filter tank according to claim 5, characterized in that: The rear end of the water inlet groove (39) is connected with a water inlet main pipe (38) through a water inlet branch pipe, and the air injection main pipe (35), the water inlet main pipe (38), the clean water discharge pipe (48), the backwashing water pipe (49), the backwashing gas pipe (50) and the impurity discharge pipe (53) are all provided with control valves.

7. A cleaning method, implemented based on an automatically cleanable V-type filter tank according to claim 6, characterized in that, The method comprises the following steps: Step one: open the control valve on the water inlet pipe (38), water flows into the water inlet tank (39) through the water inlet pipe (38), and then flows downward into the filter layer (40) through the water inlet tank (39), the filter layer (40) filters the water, and the filtered water enters the air-water distribution chamber (42) through the long handle filter head (43), and then flows into the air-water distribution cavity (46), and finally flows out through the clean water discharge pipe (48); Step two: gas washing, gas enters the air-water distribution cavity (46) through pumping and backwashing gas pipe (50), enters the air-water distribution chamber (42) through the air hole (51), and overflows upward to the filter layer (40) through the long handle filter head (43); the output rod of the first driving cylinder (11) is elongated to drive the first fixed inclined plate (32) into the water, the third driving motor (22) drives the driving gear (21) to rotate, so that the vertical sliding plate (16) moves downward along the cleaning push plate (14) into the filter layer (40), and the gas enters the vertical sliding plate (16) through pumping and inlet pipe (26) and inlet pipe (27), and then is sprayed laterally through the exhaust pipe (28); the first driving motor (8) and the second driving motor (9) drive the first rotating rod body (4) and the second rotating rod body (5) to rotate respectively, the sliding block (10) slides to the middle position, and the filter material moves through the through slot (30); Step three: air-water combined flushing, water washing is introduced at the same time as step two gas washing, the control valve on the clean water discharge pipe (48) is closed, the control valve on the backwashing water pipe (49) is opened, the backwashing water enters the air-water distribution cavity (46) through pumping and backwashing water pipe (49), enters the air-water distribution chamber (42) through the water hole (52), and overflows upward to the filter layer (40) through the long handle filter head (43), and then is washed by water; Step four: water flushing, only water flow is introduced, the control valve on the clean water discharge pipe (48) is closed, the control valve on the backwashing water pipe (49) is opened, the backwashing water enters the air-water distribution cavity (46) through pumping and backwashing water pipe (49), enters the air-water distribution chamber (42) through the water hole (52), and overflows upward to the filter layer (40) through the long handle filter head (43), and then is washed by water; Step five: when steps two and three are working, the sliding block (10) slides to the middle position at the same time, driving the first fixed inclined plate (32) and the second fixed inclined plate (33) to move to clean the impurities brought out; Step six: when step four is working, the output rod of the first driving cylinder (11) is always elongated to keep the first fixed inclined plate (32) in the water, the third driving motor (22) drives the driving gear (21) to rotate, so that the vertical sliding plate (16) moves upward along the cleaning push plate (14) to the uppermost end, the first driving motor (8) and the second driving motor (9) drive the first rotating rod body (4) and the second rotating rod body (5) to rotate respectively, the sliding block (10) slides to the middle position, driving the first fixed inclined plate (32) and the second fixed inclined plate (33) to move to clean the impurities brought out by gas washing; Step seven: when the sliding block (10) moves to the middle position, the output rod of the first driving cylinder (11) retracts, the first fixed inclined plate (32) and the second fixed inclined plate (33) move away from the water body; the output rod of the second driving cylinder (17) retracts, the inclination of the cleaning push plate (14) drives the first fixed inclined plate (32) and the second fixed inclined plate (33) to incline, and the external equipment sprays gas through the gas injection main pipe (35), the gas injection branch pipe (36) and the gas injection nozzle (37); the gas blows the impurities to the impurity discharge cavity (47) through the water leakage groove (34); Step eight: the impurities are inclinedly discharged through the inclined inclined discharge plate (45) and enter the impurity storage box (54) through the impurity discharge pipe (53).

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