A circulating water purification treatment device

Abstract

The present invention relates to the technical field of water purification, and discloses a circulating purification treatment device for flowing water, including a mounting base, a drainage pipe is fixedly mounted on the upper side of the mounting base, the tail of the drainage pipe is fixed to the mounting base and is in a blocked state, a first discharge pipe, a second discharge pipe and a filtrate pipe are respectively fixedly mounted on the tail end of the mounting base, a drainage port is provided on the inner wall of the drainage pipe, and the drainage pipe is connected to the first discharge pipe through the drainage port. By arranging a rotatable filter disc in the drainage pipe, since a vortex-shaped baffle is arranged at the end of the filter disc, when the vortex-shaped baffle rotates and is pushed by the water flow in the drainage pipe, the impurities intercepted by the filter disc can be pushed from the intermittently conducted overflow window to the central pipe to discharge the impurities, so that the filter disc has an automatic cleaning function, can circulate and filter sewage, achieve the effect of not being easy to be blocked, reduce maintenance costs, and be more economical and reliable to use.

Description

Technical Field

[0001] The invention relates to the technical field of water purification, and in particular to a circulating purification treatment device for flowing water. Background Art

[0002] The new situation of agricultural planting emphasizes the principle of recycling and maximizes the utilization rate of water resources. Therefore, it is particularly important to purify and filter water resources. The purified water can be used again for agricultural irrigation or as other domestic water. In the prior art, the patent document with the announcement number CN2100150838U discloses a circulating agricultural water purification device, including a purification tank body, a water quality detector and an atomization device. The upper end of the inner wall of the purification tank body is fixedly connected with a water baffle, and a limit ring is set in the middle of the water baffle. A filter layer is clamped on the middle end of the inner wall of the tank body, and the filter layer divides the middle and lower part of the purification tank body into a purification chamber and a water inspection chamber. A motor is fixedly installed on the top outer wall of the purification tank body, and a rotating rod is fixedly connected to the output end of the motor, and an impeller is fixedly installed on the bottom end of the rotating rod. One end of the water inlet pipe passes through the middle end of the purification tank body and extends into the purification chamber. One end of the water inlet pipe extending into the purification chamber is threadedly connected with a nozzle, and the bottom of the nozzle is fixedly connected to the atomization device. The atomization device makes the water filtering more sufficient. At the same time, the circulating filtration detection function is adopted to effectively purify the water.

[0003] In actual application, especially when the water source is turbid or contains more impurities, the purified water is not easy to be blocked when using a sprinkler for irrigation, and can also be used as domestic water. However, the existing purification devices, whether filtering through filter materials or filters, have the problem of easy clogging and difficult cleaning, and are difficult to maintain in the later stage, with high costs and not economical to use. Based on this, optimization and improvement are carried out to address the defect of easy clogging of the existing purification devices. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a circulating purification treatment device for flowing water.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a circulating purification treatment device for a flowing water body, comprising a mounting base, a drainage pipe is fixedly mounted on the upper side of the mounting base, the tail of the drainage pipe is fixed to the mounting base and is in a plugged shape, a first discharge pipe, a second discharge pipe and a filtrate pipe are respectively fixedly mounted on the tail end of the mounting base, a drainage port is opened on the inner wall of the drainage pipe, the drainage pipe is connected with the first discharge pipe through the drainage port, the inlet end of the filtrate pipe extends into the inner cavity of the tail of the drainage pipe, a central pipe is fixedly mounted inside the drainage pipe, the front end of the central pipe is in a plugged shape, a first flow channel port is opened on the surface of the central pipe, and the tail end of the central pipe is connected with the second discharge pipe;

[0006] A rotating sleeve is rotatably mounted on the surface of the central tube, a driving assembly is fixedly mounted on the surface of the rotating sleeve, the driving assembly drives the rotating sleeve to rotate, and a second flow channel opening is opened on the surface of the rotating sleeve;

[0007] An adjustable connecting sleeve is slidably installed on the surface of the rotating sleeve, and the connecting sleeve can rotate together with the rotating sleeve, a third flow channel opening is opened on the surface of the connecting sleeve, a filter disc is fixedly installed on the surface of the connecting sleeve, and a vortex-shaped baffle is fixedly installed on the end face of the filter disc, when the first flow channel opening, the second flow channel opening and the third flow channel opening overlap, an intermittently conductive overflow window is formed, and the water flow outside the central tube can enter the inner cavity of the central tube from the intermittently conductive overflow window, so that the impurities intercepted by the filter disc are pushed into the central tube from the intermittently conductive overflow window to discharge the impurities, so that the filter disc has the function of automatic cleaning.

[0008] Preferably, a filter material conveying pipe is fixedly installed on the upper side of the drainage pipe, a material distribution hole is opened between the filter material conveying pipe and the drainage pipe, a spiral conveying blade is rotatably installed inside the filter material conveying pipe, a servo motor is fixedly installed at the end of the filter material conveying pipe, the servo motor drives the spiral conveying blade to rotate, the filter material conveying pipe is filled with filter material particles, the spiral conveying blade pushes the filter material particles into the drainage pipe from the material distribution hole, the filter material particles flow with the water flow and fall into the gap of the vortex baffle, the sewage impurities are mixed with the attached layer of the filter material particles, the filter material particle layer is discharged into the central pipe with the water flow, the sewage impurities can be discharged together, the probability of direct contact between the sewage impurities and the filter disc is reduced, and the impurities cleaning is made easier.

[0009] Preferably, the driving assembly includes a plurality of hydraulic impellers, which are fixedly mounted at the end of the rotating sleeve, and the outer contour ring of the hydraulic impeller is in sliding contact with the inner wall of the drainage pipe. There are two first discharge pipes, and the inlet ends of the two first discharge pipes extend into the mounting base. The outlet ends of the two first discharge pipes are fixedly mounted with control valves, and the sewage flow rate can be controlled by adjusting the opening size of the control valve, that is, the rotation speed of the hydraulic impeller can be adjusted.

[0010] Preferably, a sliding rail is fixedly installed on the surface of the rotating sleeve, a guide slot is opened inside the connecting sleeve, the guide slot is slidably sleeved on the surface of the sliding rail, a reset spring is sleeved on the surface of the rotating sleeve, and the end of the reset spring presses against the filter plate.

[0011] The third flow channel opening is in a rectangular structure, and the second flow channel opening and the first flow channel opening are both in a triangular structure. During the rotation of the rotating sleeve on the surface of the central tube, the second flow channel opening and the first flow channel opening are intermittently overlapped and connected.

[0012] The third flow channel opening is a rectangular structure, and the second flow channel opening and the first flow channel opening are both triangular structures. During the rotation process of the rotating sleeve on the surface of the central tube, the second flow channel opening and the first flow channel opening are intermittently overlapped and connected, thereby realizing the intermittent conduction overflow window related functions.

[0013] Preferably, a filter cartridge is fixedly installed inside the filter material delivery pipe, a guide hole is opened inside the mounting base, the lower end of the guide hole is connected with the center pipe, the upper end of the guide hole is connected with the inner cavity of the filter cartridge, the second discharge pipe is connected with the rear inner cavity of the filter material delivery pipe, the material of the filter material particles is quartz sand, the particle size of the filter material particles is larger than the filter hole size of the filter disc and the filter material cartridge, the end of the spiral delivery blade extends into the filter material cartridge to realize the recycling and reuse of the filter material particles.

[0014] The present invention has the following beneficial effects:

[0015] 1. The purification treatment device is provided with a rotatable filter disc in the drainage pipe. Since a vortex-shaped baffle is provided at the end of the filter disc, when the vortex-shaped baffle rotates and the water flow in the drainage pipe pushes the impurities intercepted by the filter disc to be pushed from the intermittently connected overflow window into the central tube to discharge the impurities, so that the filter disc has an automatic cleaning function, can circulate and filter sewage, achieves an effect of not being easy to be blocked, reduces maintenance costs, and is more economical and reliable to use.

[0016] 2. The purification treatment device fills the filter material conveying pipe with filter material particles, and the spiral conveying blades push the filter material particles from the cloth holes into the drainage pipe, and continuously convey the filter material particles to the gap between the vortex-shaped baffles. A filter material particle attachment layer is formed on the surface of the filter disk. The filter material particle attachment layer has many pores and has good interception and filtering effects. It can also reduce the probability of direct contact between sewage impurities and the filter disk, and avoid clogging the filter holes of the filter disk. At the same time, the sewage impurities are mixed with the filter material particle attachment layer, and the filter material particle layer is discharged into the central tube with the water flow, and can be discharged together with the sewage and impurities, which greatly improves the efficiency of automatic impurity removal and blockage clearing.

[0017] 3. The purification treatment device is provided with a connecting sleeve that can slide back and forth along the surface of the rotating sleeve, so that the impurity discharge capacity of the intermittently conductive overflow window is positively correlated with the impurity content of the sewage in the drainage pipe, so that the purification treatment device can automatically adjust the clearing frequency when the water quality changes, meet the use requirements of purification treatment of agricultural water bodies with complex water quality, and ensure the stability of equipment operation;

[0018] Specifically, during normal use, the resistance of the sewage to the filter disc and the elastic force of the return spring are in a balanced state;

[0019] When there are too many impurities in the sewage, the filter disc quickly intercepts more impurities. At this time, the resistance of the filter disc to the sewage increases, compressing the reset spring, causing the connecting sleeve and the rotating sleeve to have a relative displacement, that is, the conduction area of ​​the second flow channel opening and the third flow channel opening increases, which can accelerate the discharge of sewage impurities or the attached layer of filter material particles from the intermittently conducted overflow window, improve the efficiency of the filter disc in automatically cleaning impurities, reduce the load of the filter disc, and extend its service life;

[0020] When there are fewer impurities in sewage, the amount of impurities intercepted by the filter disc is small, and the filter disc's resistance to sewage is relatively small. The reset spring pushes the connecting sleeve to move upstream, that is, the conduction area between the second flow channel opening and the third flow channel opening is reduced, reducing the discharge amount of sewage impurities or the attachment layer of filter material particles from the intermittently conductive overflow window, increasing the thickness of the attachment layer of filter material particles on the surface of the filter disc, making the filtration more thorough, and reducing the loss of filter material particles, which is beneficial to the shutdown of the servo motor and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of the purification treatment device proposed by the present invention (I);

[0022] Figure 2 A schematic diagram of the three-dimensional structure of the purification treatment device proposed by the present invention (II);

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the central tube and its surface components proposed by the present invention;

[0024] Figure 4 for Figure 3 Explosion diagram of

[0025] Figure 5 This is a schematic diagram of the front cross-section structure of the purification treatment device proposed by the present invention (I);

[0026] Figure 6 This is a schematic diagram of the front cross-section structure of the purification treatment device proposed by the present invention (II);

[0027] Figure 7 This is a schematic diagram of the front cross-sectional structure of the filter disc proposed by the present invention;

[0028] Figure 8 This is a schematic diagram of the side structure of the filter disc proposed by the present invention.

[0029] In the figure: 1 mounting base, 2 drainage pipe, 3 first discharge pipe, 4 second discharge pipe, 5 filtrate pipe, 6 drainage port, 7 center pipe, 8 first flow channel port, 9 rotating sleeve, 10 second flow channel port, 11 connecting sleeve, 12 third flow channel port, 13 filter disc, 14 vortex baffle, 15 filter material conveying pipe, 16 material distribution hole, 17 spiral conveying blade, 18 servo motor, 19 filter material particles, 20 hydraulic impeller, 21 return spring, 22 filter material filter cartridge, 23 guide hole, 24 control valve, 25 intermittent overflow window, 26 first path, 27 second path, 28 third path, 29 return path. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Reference Figure 1-8 A circulating purification treatment device for a flowing water body comprises a mounting base 1, a drainage pipe 2 is fixedly mounted on the upper side of the mounting base 1, the tail of the drainage pipe 2 is fixed to the mounting base 1 and is in a blocked state, a first discharge pipe 3, a second discharge pipe 4 and a filtrate pipe 5 are fixedly mounted on the tail end of the mounting base 1 respectively, a drainage port 6 is provided on the inner wall of the drainage pipe 2, the drainage pipe 2 is communicated with the first discharge pipe 3 through the drainage port 6, the inlet end of the filtrate pipe 5 extends to the inner cavity of the tail of the drainage pipe 2, a central pipe 7 is fixedly mounted inside the drainage pipe 2, the front end of the central pipe 7 is in a blocked state, a first flow channel port 8 is provided on the surface of the central pipe 7, and the tail end of the central pipe 7 is communicated with the second discharge pipe 4.

[0033] Among them, the driving component includes a plurality of hydraulic impellers 20, and the plurality of hydraulic impellers 20 are fixedly installed at the end of the rotating sleeve 9. The outer contour ring of the hydraulic impeller 20 is in sliding contact with the inner wall of the drainage pipe 2. There are two first discharge pipes 3, and the inlet ends of the two first discharge pipes 3 extend into the mounting base 1. The outlet ends of the two first discharge pipes 3 are fixedly installed with control valves 24. The sewage flows into the first discharge pipe 3 from the drainage pipe 2, pushing the hydraulic impeller 20 to rotate. The sewage flow rate can be controlled by adjusting the opening size of the control valve 24.

[0034] A rotating sleeve 9 is rotatably mounted on the surface of the central tube 7 . A driving assembly is fixedly mounted on the surface of the rotating sleeve 9 . The driving assembly drives the rotating sleeve 9 to rotate. A second flow channel opening 10 is opened on the surface of the rotating sleeve 9 .

[0035] An adjustable connecting sleeve 11 is slidably installed on the surface of the rotating sleeve 9, and the connecting sleeve 11 can rotate together with the rotating sleeve 9, wherein a sliding rail is fixedly installed on the surface of the rotating sleeve 9, a guide slide groove is opened inside the connecting sleeve 11, and the guide slide groove is slidably sleeved on the surface of the sliding rail, and a reset spring 21 is sleeved on the surface of the rotating sleeve 9, and the end of the reset spring 21 presses against the filter plate 13.

[0036] The surface of the connecting sleeve 11 is provided with a third flow channel opening 12, a filter disc 13 is fixedly mounted on the surface of the connecting sleeve 11, and a vortex-shaped baffle 14 is fixedly mounted on the end surface of the filter disc 13. When the first flow channel opening 8, the second flow channel opening 10 and the third flow channel opening 12 overlap, an intermittently conductive overflow window 25 is formed. Figure 3 , Figure 4 The water flow outside the central tube 7 can enter the inner cavity of the central tube 7 through the intermittently conductive overflow window 25.

[0037] Specifically, refer to Figure 4 The third flow channel opening 12 is a rectangular structure, the second flow channel opening 10 and the first flow channel opening 8 are both triangular structures, and during the rotation process of the rotating sleeve 9 on the surface of the central tube 7, the second flow channel opening 10 and the first flow channel opening 8 are intermittently overlapped and connected.

[0038] The filter disc 13 slides under the force of the water flow and compresses the reset spring 21. As the water flow resistance of the filter disc 13 changes (the resistance of the filter disc 13 varies with the amount of impurities intercepted), the filter disc 13 pushes the connecting sleeve 11 to slide back and forth, so that the overlapping area of ​​the second flow channel opening 10 and the third flow channel opening 12 changes accordingly, and the overflow window 25 that is intermittently connected has the function of connecting the inside and outside of the central tube 7.

[0039] By arranging a rotatable filter disc 13 in the drainage tube 2, since a vortex-shaped baffle 14 is arranged at the end of the filter disc 13, when the vortex-shaped baffle 14 rotates and is pushed by the water flow in the drainage tube 2, the filter disc 13 is rotated. Figure 8 The impurities intercepted by the filter disc 13 can be pushed into the central tube 7 from the intermittently conductive overflow window 25 to discharge the impurities, so that the filter disc 13 has the function of automatic cleaning, can circulate and filter sewage, achieve the effect of not being easy to be blocked, reduce maintenance costs, and use more economical and reliable.

[0040] In this embodiment, a filter material conveying pipe 15 is fixedly installed on the upper side of the drainage pipe 2, a material distribution hole 16 is opened between the filter material conveying pipe 15 and the drainage pipe 2, a spiral conveying blade 17 is rotatably installed inside the filter material conveying pipe 15, a servo motor 18 is fixedly installed at the end of the filter material conveying pipe 15, the servo motor 18 drives the spiral conveying blade 17 to rotate, the filter material conveying pipe 15 is filled with filter material particles 19, the spiral conveying blade 17 pushes the filter material particles 19 from the material distribution hole 16 into the drainage pipe 2, and the filter material particles 19 flow with the water flow and fall into the gap of the vortex baffle 14, as shown in FIG. Figure 7 shown.

[0041] A filter cartridge 22 is fixedly installed inside the filter material conveying pipe 15, and a guide hole 23 is opened inside the mounting base 1. The lower end of the guide hole 23 is connected to the center pipe 7, and the upper end of the guide hole 23 is connected to the inner cavity of the filter material filter cartridge 22. The second discharge pipe 4 is connected to the rear inner cavity of the filter material conveying pipe 15.

[0042] The material of the filter particles 19 is quartz sand. The particle size of the filter particles 19 is larger than the filter hole diameter of the filter disc 13 and the filter filter cartridge 22. The filter particles 19 and sewage impurities enter the filter cartridge 22 at the same time, and the filter particles 19 are intercepted in the filter cartridge 22. The sewage and impurities pass through the filter cartridge 22 and are discharged from the second discharge pipe 4. The end of the spiral conveying blade 17 extends into the filter cartridge 22, and the spiral conveying blade 17 rotates to collect the filter particles 19 in the filter conveying pipe 15. It should be noted that during installation, the inlet of the drainage pipe 2 maintains a certain elevation angle upward, which is conducive to the discharge of sewage from the second discharge pipe 4, and the filter conveying pipe 15 contains more filter particles 19, and the resistance is relatively large, which can prevent the sewage from directly returning to the drainage pipe 2 from the cloth hole 16.

[0043] The purification treatment device is characterized in that filter material particles 19 are filled in the filter material conveying pipe 15, and the spiral conveying blades 17 push the filter material particles 19 into the drainage pipe 2 from the material distribution holes 16, and continuously convey the filter material particles 19 to the gaps of the vortex-shaped baffle 14, so that a filter material particle 19 attachment layer is formed on the surface of the filter disc 13. The filter material particle 19 attachment layer has many pores and has a good interception and filtering effect, and can reduce the probability of sewage impurities directly contacting the filter disc 13, thereby preventing the filter holes of the filter disc 13 from being blocked. At the same time, sewage impurities (such as Figure 7 The filter material particles 19 are mixed with the attached layer of the filter material particles 19, and the filter material particles 19 are discharged into the central tube 7 along with the water flow, and can be discharged together with the sewage and impurities, which greatly improves the efficiency of automatic impurity removal and blockage clearing.

[0044] Working principle: Figure 5 , Figure 6As shown, after the sewage enters the drainage pipe 2, it is discharged in three ways, namely the first path 26, the second path 27, and the third path 28. The sewage directly enters the first discharge pipe 3 and is discharged according to the first path 26, and drives the hydraulic impeller 20 to rotate; the mixed liquid of sewage, impurities and the attached layer of filter material particles 19 enters the central pipe 7 through the intermittently conductive overflow window 25 and is discharged according to the second path 27; the sewage is filtered by the filter disc 13 and the attached layer of filter material particles 19 to produce a filtrate that is discharged according to the third path 28 and can be used. At the same time, the filter material particles 19 enter the filter material filter cartridge 22 according to the second path 27, the spiral conveying blade 17 rotates, and the filter material particles 19 are pushed to the distribution hole 16 by the spiral conveying blade 17, and then enter the drainage pipe 2, as shown in FIG. Figure 5 As shown in the return flow path 29, the filter particles 19 flow with the water flow and fall into the gap of the vortex baffle 14 to replenish the filter particles 19 lost upstream of the filter disc 13, as shown in FIG. Figure 7 As shown, the filter material particles 19 are recycled and reused.

[0045] During normal use, the resistance of the sewage to the filter disc 13 and the elastic force of the return spring 21 are in a balanced state. Figure 6 As shown;

[0046] When there are too many impurities in the sewage, the filter disc 13 quickly intercepts more impurities. At this time, the resistance of the filter disc 13 to the sewage increases, compressing the reset spring 21, so that the connecting sleeve 11 and the rotating sleeve 9 are relatively displaced, that is, the conductive area of ​​the second flow channel opening 10 and the third flow channel opening 12 is increased, which can accelerate the discharge of sewage impurities or the attached layer of filter material particles 19 from the intermittently conductive overflow window 25, improve the efficiency of the filter disc 13 in automatically cleaning impurities, reduce the load of the filter disc 13, and extend its service life;

[0047] When there are fewer impurities in the sewage, the amount of impurities intercepted by the filter disc 13 is small, and the resistance of the filter disc 13 to the sewage is relatively small. The reset spring 21 pushes the connecting sleeve 11 to move upstream, that is, the conduction area between the second flow channel opening 10 and the third flow channel opening 12 is reduced, thereby reducing the discharge amount of sewage impurities or the attached layer of filter particles 19 from the intermittently conductive overflow window 25, and increasing the thickness of the attached layer of filter particles 19 on the surface of the filter disc 13, making the filtration more thorough, and reducing the loss of filter particles 19, which is beneficial to the shutdown of the servo motor 18 and reducing energy consumption.

[0048] The purification treatment device is provided with a connecting sleeve 11 that can slide back and forth along the surface of the rotating sleeve 9, and an intermittently conductive overflow window 25 composed of a first flow channel opening 8, a second flow channel opening 10 and a third flow channel opening 12. The impurity discharge capacity of the intermittently conductive overflow window 25 is positively correlated with the impurity content of the sewage in the drainage pipe 2, so that the purification treatment device can automatically adjust the clearing frequency when the water quality changes, meet the use requirements of purification treatment of agricultural water bodies with complex water quality, and ensure the stability of equipment operation.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A circulating water purification treatment device, comprising a mounting base (1), characterized in that: A drainage tube (2) is fixedly mounted on the upper side of the mounting base (1); the tail of the drainage tube (2) is fixed to the mounting base (1) and is in a blocked state; a first discharge tube (3), a second discharge tube (4) and a filtrate tube (5) are respectively fixedly mounted on the tail end of the mounting base (1); a drainage port (6) is provided on the inner wall of the drainage tube (2); the drainage tube (2) is connected to the first discharge tube (3) through the drainage port (6); the inlet end of the filtrate tube (5) extends into the inner cavity of the tail of the drainage tube (2); a central tube (7) is fixedly mounted inside the drainage tube (2); the front end of the central tube (7) is in a blocked state; a first flow channel port (8) is provided on the surface of the central tube (7); and the tail end of the central tube (7) is connected to the second discharge tube (4); A rotating sleeve (9) is rotatably mounted on the surface of the central tube (7), a driving assembly is fixedly mounted on the surface of the rotating sleeve (9), the driving assembly drives the rotating sleeve (9) to rotate, and a second flow channel opening (10) is opened on the surface of the rotating sleeve (9); An adjustable connecting sleeve (11) is slidably mounted on the surface of the rotating sleeve (9), and the connecting sleeve (11) can rotate together with the rotating sleeve (9); a third flow channel opening (12) is provided on the surface of the connecting sleeve (11); a filter disc (13) is fixedly mounted on the surface of the connecting sleeve (11); and a vortex-shaped baffle (14) is fixedly mounted on the end surface of the filter disc (13); A sliding rail is fixedly mounted on the surface of the rotating sleeve (9), a guide slide groove is provided inside the connecting sleeve (11), and the guide slide groove is slidingly sleeved on the surface of the sliding rail. A return spring (21) is sleeved on the surface of the rotating sleeve (9), and the end of the return spring (21) is pressed against the filter plate (13). When the first flow channel opening (8), the second flow channel opening (10) and the third flow channel opening (12) overlap, an intermittently conductive overflow window (25) is formed, and water flow outside the central tube (7) can enter the inner cavity of the central tube (7) through the intermittently conductive overflow window (25).

2. A circulating water purification treatment device according to claim 1, characterized in that: A filter material conveying pipe (15) is fixedly mounted on the upper side of the drainage pipe (2); a material distribution hole (16) is provided between the filter material conveying pipe (15) and the drainage pipe (2); a spiral conveying blade (17) is rotatably mounted inside the filter material conveying pipe (15); a servo motor (18) is fixedly mounted at the end of the filter material conveying pipe (15); the servo motor (18) drives the spiral conveying blade (17) to rotate; the filter material conveying pipe (15) is filled with filter material particles (19); the spiral conveying blade (17) pushes the filter material particles (19) into the drainage pipe (2) from the material distribution hole (16); and the filter material particles (19) flow along with the water flow and fall into the gap of the vortex-shaped baffle (14).

3. A circulating water purification treatment device according to claim 2, characterized in that: The driving assembly comprises a plurality of hydraulic impellers (20), wherein the plurality of hydraulic impellers (20) are fixedly mounted on the end of the rotating sleeve (9), and the outer contour ring of the hydraulic impeller (20) is in sliding contact with the inner wall of the drainage pipe (2).

4. A circulating water purification treatment device according to claim 3, characterized in that: The third flow channel opening (12) is in a rectangular structure, and the second flow channel opening (10) and the first flow channel opening (8) are both in a triangular structure. When the rotating sleeve (9) rotates on the surface of the central tube (7), the second flow channel opening (10) and the first flow channel opening (8) are intermittently overlapped and connected.

5. A circulating water purification treatment device according to claim 4, characterized in that: The filter disc (13) slides under the force of the water flow and compresses the return spring (21); as the water flow resistance of the filter disc (13) changes, the filter disc (13) pushes the connecting sleeve (11) to slide back and forth, causing the overlapping area of ​​the second flow channel opening (10) and the third flow channel opening (12) to change accordingly.

6. A circulating water purification treatment device according to claim 5, characterized in that: A filter cartridge (22) is fixedly mounted inside the filter material delivery pipe (15), a flow guide hole (23) is opened inside the mounting base (1), the lower end of the flow guide hole (23) is connected to the central pipe (7), the upper end of the flow guide hole (23) is connected to the inner cavity of the filter material filter cartridge (22), and the second discharge pipe (4) is connected to the inner cavity of the tail of the filter material delivery pipe (15).

7. A circulating water purification treatment device according to claim 6, characterized in that: The material of the filter material particles (19) is quartz sand, the particle size of the filter material particles (19) is larger than the filter hole diameter of the filter disc (13) and the filter material filter cartridge (22), and the end of the spiral conveying blade (17) extends into the filter material filter cartridge (22).

8. A circulating water purification treatment device according to any one of claims 1 to 7, characterized in that: There are two first discharge pipes (3), the inlet ends of the two first discharge pipes (3) extend into the mounting base (1), and the outlet ends of the two first discharge pipes (3) are fixedly mounted with control valves (24).

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