Dirt cleaning and distributing device for agricultural non-point source pollution prevention and control

Abstract

The utility model relates to a decontamination shunting device for agricultural non-point source pollution control, which comprises a shunting box, a water inlet pipe and a water outlet pipe, a filter pipe is arranged on the side wall of the shunting box, one end of the filter pipe is fixedly connected with the side wall of the shunting box, and the other end of the filter pipe inclines towards the bottom of the shunting box. A filtering spiral is arranged in the filtering pipe, filtering holes are distributed in a spiral blade of the filtering spiral in an array mode, a shielding piece used for preventing filter residues from being discharged out of the filtering pipe is arranged at the end, close to the bottom of the flow dividing box, of the spiral blade, and a first driving part used for driving the filtering spiral to rotate reversely and slide in the filtering pipe is further arranged on the outer side wall of the flow dividing box. And the first driving part is connected with a winding shaft of the filtering spiral. According to the scheme, filter residues generated in the water filtering process can be discharged out of the device, shutdown cleaning of the filter residues is not needed, the device can continuously work, and the working efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural non-point source pollution prevention and control, and in particular to a pollution cleaning and diversion device for agricultural non-point source pollution prevention and control. Background Art

[0002] Agricultural non-point source pollution refers to the process in which pollutants such as nitrogen, phosphorus, and pesticides migrate and diffuse into water bodies in a dispersed, trace, and wide-area form during agricultural production activities. It has the characteristics of randomness, dispersion, and complexity. Excessive amounts of agricultural non-point source pollution such as nitrogen, phosphorus, and pesticides entering water bodies will not only damage the agricultural ecosystem, but also have serious harm to the aquatic ecological environment and human health.

[0003] The main means of preventing and controlling agricultural non-point source pollution is to divert water bodies to reduce the total amount of pollutants in the water body. The non-point source pollution diversion device in the prior art mainly stores sludge and other sediments through a sedimentation tank after filtration. When the sedimentation tank is full, the sedimentation tank is shut down for cleaning and then put into use again after cleaning. However, since the water body contains a large amount of pollutants such as feces and sludge, when filtering the water body, the sedimentation tank needs to be cleaned frequently, affecting the working efficiency of the device. Utility Model Content

[0004] The utility model provides a pollution-free diversion device for agricultural non-point source pollution prevention and control to solve the problem that the non-point source pollution-free diversion device in the above-mentioned prior art solution needs to be frequently stopped to clean the sedimentation box storing sludge and other sediments when filtering water bodies, which affects the filtering efficiency. The pollution-free diversion device in this solution can discharge filter residues such as sludge during the filtering process to prevent the filter residues from entering the device without stopping for cleaning.

[0005] The technical solution adopted by the utility model is: a pollution cleaning and diversion device for the prevention and control of agricultural non-point source pollution, comprising a diversion box, an inlet pipe located at the top of the diversion box and an outlet pipe located at the bottom of the side wall of the diversion box, a filter tube located in the inner cavity of the diversion box and connected to the outside is provided on the side wall of the diversion box, one end of the filter tube is fixedly connected to the side wall of the diversion box, and the other end is inclined toward the bottom of the diversion box, the inlet pipe passes through the top of the diversion box and is connected to the filter tube, a filter spiral is provided in the filter tube, filter holes are arranged in an array on the spiral blades of the filter spiral, a shielding piece for preventing filter residue from being discharged from the filter tube is provided on the end of the spiral blade close to the bottom of the diversion box, and a first driving part for driving the filter spiral to rotate in the opposite direction and slide in the filter tube is also provided on the outer wall of the diversion box, and the first driving part is connected to the winding shaft of the filter spiral.

[0006] The filter spiral in the filter tube rotates in the opposite direction under the drive of the first drive unit and slides back and forth in the filter tube toward the outside of the diversion box. When the first drive unit drives the filter spiral to slide, the bottom of the filter spiral is always located between the connection between the filter tube and the water inlet pipe and the end face close to the bottom of the diversion box. When the device is working, the water body polluted by the non-point source enters the filter tube along the water inlet pipe. After the water body enters the filter tube, the water flows through the filter holes on the spiral blades and flows into the inner cavity of the diversion box along the filter tube. The filter residue cannot pass through the filter holes on the spiral blades and is trapped on the spiral blades. Since the winding shaft drives the spiral blades to rotate in the opposite direction under the drive of the first drive unit, it is difficult for the filter residue on the spiral blades to move to the end of the filter spiral close to the bottom of the diversion box due to its own gravity. The shielding piece can prevent the filter residue moving to the end of the filter spiral close to the bottom of the diversion box from entering the inner cavity of the diversion box. The end of the filter spiral close to the bottom of the diversion box is the bottom of the filter spiral. When the first driving unit drives the filter spiral to slide out of the filter tube, the filter residue on the spiral blade is taken out of the filter tube. At this time, the filter spiral is still rotating, and the rotating filter spiral throws out the filter residue on the spiral blade to prevent the filter residue from clogging the filter hole and affecting the filtering effect. The water flow that has been filtered by the filter spiral flows into the inner cavity of the diversion box and then flows out of the diversion box along the outlet pipe to proceed to the next water treatment process.

[0007] The surface source pollution diversion device in this scheme can discharge the filter residue generated in the process of filtering the water body from the device without stopping the device to clean the filter residue, so that the device can continue to work and improve the working efficiency of the device.

[0008] Preferably, the first driving unit includes a first guide seat fixedly connected to the outer side wall of the shunt box, a first linear motor fixedly connected to the first guide seat, a first connecting block fixedly connected to the driving end of the first linear motor, and a first rotating motor located on the first connecting block, the axial direction of the first linear motor is the same as the axial direction of the filter tube, and the driving end of the first rotating motor is fixedly connected to the winding shaft of the filter spiral. The first driving unit drives the filter spiral to slide in the filter tube through the first linear motor, and drives the filter spiral to rotate through the first rotating motor.

[0009] Preferably, a side plate for intercepting filter residue is provided on the end of the spiral blade away from the winding axis, the side plate is fixedly connected to the spiral blade, and the side plate is also provided with filter holes arranged in an array. The provision of the side plate can block the filter residue thrown from the spiral blade onto the inner wall of the filter tube. When the filter spiral slides out of the filter tube, the groove formed by the side plate and the spiral blade during the rotation of the filter spiral will reverse, and the filter residue on the filter spiral after the reversal will fall off the filter spiral due to its own gravity. After the filter holes are provided on the side plate, the water flowing through the filter spiral can also flow out from the filter holes on the side plate, thereby increasing the flow rate of the water flow.

[0010] Preferably, the distance between the connection point between the filter tube and the water inlet pipe and the connection point between the filter tube and the side wall of the diversion box is 1 / 4-1 / 2 of the length of the filter tube. Studies have shown that when the distance between the connection point between the filter tube and the water inlet pipe and the connection point between the filter tube and the side wall of the diversion box is 1 / 4-1 / 2 of the length of the filter tube, the filtering effect of the filter spiral is the best. At this time, the end of the filter spiral will not be blocked due to the long filtering distance of the water body, nor will the filtering effect be poor due to the short filtering distance of the water body.

[0011] Preferably, a slag discharge pipe located in the inner cavity of the diverter box and connected to the outside is also provided on the side wall of the diverter box, one end of the slag discharge pipe is fixedly connected to the side wall of the diverter box, and the other end is close to the bottom of the diverter box. A slag discharge spiral is provided in the slag discharge pipe, and the rotating blades of the slag discharge spiral are used to discharge the filter residue at the bottom of the diverter box. A second driving part for driving the slag discharge spiral to rotate in the opposite direction and slide in the filter tube is also provided on the outer side wall of the diverter box, and the second driving part is connected to the rotating shaft of the filter spiral. The slag discharge spiral can discharge the filter residue accumulated at the bottom of the diverter box from the diverter box along the slag discharge pipe by rotating, so as to avoid the filter residue that falls into the bottom of the diverter box and accumulates and blocks the water outlet pipe. At the same time, the slag discharge spiral can also slide out of the slag discharge pipe, and throw the filter residue on the slag discharge spiral out of the slag discharge pipe.

[0012] Preferably, the second driving unit includes a second guide seat fixedly connected to the outer side wall of the diverter box, a second linear motor fixedly connected to the second guide seat, a second connecting block fixedly connected to the driving end of the second linear motor, and a second rotating motor located on the second connecting block, the axial direction of the second linear motor is the same as the axial direction of the slag discharge pipe, and the driving end of the second rotating motor is fixedly connected to the rotating shaft. The second driving unit drives the slag discharge spiral to slide in the slag discharge pipe through the second linear motor, and drives the slag discharge spiral to rotate through the second rotating motor.

[0013] Preferably, a baffle for intercepting filter residue is provided on one end of the rotating blade away from the rotating shaft, and the baffle is fixedly connected to the rotating blade. The angle range of the acute angle between the axis of the slag discharge pipe and the bottom surface of the diverter box is 20°-50°. The setting of the baffle can block the filter residue thrown from the rotating blade to the inner wall of the slag discharge pipe. Experiments have shown that when the angle range of the acute angle between the axis of the slag discharge pipe and the bottom surface of the diverter box is 20°-50°, the filter residue accumulated at the bottom of the diverter box can be smoothly discharged through the slag discharge spiral.

[0014] Preferably, the line connecting one end of the slag discharge pipe near the bottom of the diverter box and one end of the filter tube near the bottom of the diverter box is perpendicular to the bottom plane of the diverter box. The bottom of the inner cavity of the diverter box is also provided with a partition for intercepting the filter residue from entering the outlet pipe. The outlet pipe is located on one side of the partition, and one end of the slag discharge pipe near the bottom of the diverter box is located on the other side of the partition. The line connecting one end of the slag discharge pipe near the bottom of the diverter box and one end of the filter tube near the bottom of the diverter box is perpendicular to the bottom plane of the diverter box, so that the end of the filter tube is located directly above the end of the slag discharge pipe, and the filter residue falling out of the filter tube is closer to the end of the slag discharge pipe when falling, which is more convenient for the slag discharge spiral to discharge the filter residue. The setting of the partition can separate the filter residue and the outlet pipe to prevent the filter residue from clogging the outlet pipe. After overflowing the partition, the water flow enters the other end of the partition and is then discharged from the outlet pipe. The filter residue is discharged along the slag discharge pipe by the slag discharge spiral before overflowing the partition.

[0015] Compared with the prior art, the beneficial effect of the utility model is that the surface source pollution diversion device in this scheme can discharge the filter residue generated in the process of filtering the water body from the device, without the need to shut down the device to clean the filter residue, so that the device can continue to work and improve the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a sewage cleaning and diversion device for preventing and controlling agricultural non-point source pollution of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a filtering spiral of a sewage cleaning and diversion device for preventing and controlling agricultural non-point source pollution of the utility model;

[0018] Figure 3 The utility model is a sewage diversion device for preventing and controlling agricultural non-point source pollution. Figure 2 A magnified view of part A in FIG.

[0019] Figure 4 The utility model is a structural schematic diagram of a slag discharge spiral of a sewage cleaning and diversion device for preventing and controlling agricultural non-point source pollution. DETAILED DESCRIPTION

[0020] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0021] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they 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 direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0023] Example 1

[0024] like Figure 1-Figure 3 The figure shows an embodiment 1 of a sewage diversion device for preventing and controlling agricultural non-point source pollution, comprising a diversion box 1, an inlet pipe 2 located at the top of the diversion box 1 and an outlet pipe 3 located at the bottom of the side wall of the diversion box 1, a filter tube 4 located in the inner cavity of the diversion box 1 and connected to the outside is provided on the side wall of the diversion box 1, one end of the filter tube 4 is fixedly connected to the side wall of the diversion box 1, and the other end is inclined toward the bottom of the diversion box 1, the inlet pipe 2 passes through the top of the diversion box 1 and is connected to the filter tube 4, a filter spiral 5 is provided in the filter tube 4, and filter holes 6 are arranged in an array on the spiral blades 501 of the filter spiral 5, and a shielding piece 503 is provided on the end of the spiral blades 501 close to the bottom of the diversion box 1 for preventing filter residue from being discharged from the filter tube 4, and a first driving part 7 for driving the filter spiral 5 to rotate in the opposite direction and slide in the filter tube 4 is also provided on the outer wall of the diversion box 1, and the first driving part 7 is connected to the winding shaft 502 of the filter spiral 5.

[0025] The working principle or working process of this embodiment is as follows: the filter spiral 5 in the filter tube 4 rotates in the opposite direction under the drive of the first driving unit 7 and slides back and forth in the filter tube 4 toward the outside of the diverter box 1. When the first driving unit 7 drives the filter spiral 5 to slide, the bottom of the filter spiral 5 is always located between the connection between the filter tube 4 and the water inlet pipe 2 and the end surface close to the bottom of the diverter box 1. When the device is working, the water body polluted by the non-point source enters the filter tube 4 along the water inlet pipe 2. After the water body enters the filter tube 4, the water flows through the filter hole 6 on the spiral blade 501 and flows into the inner cavity of the diversion box 1 along the filter tube 4. The filter residue cannot pass through the filter hole 6 on the spiral blade 501 and is trapped on the spiral blade 501. Because the winding shaft 502 drives the spiral blade 501 to rotate in the opposite direction under the drive of the first driving unit 7, it is difficult for the filter residue on the spiral blade 501 to move toward the filter spiral 5 due to its own gravity. The shielding piece 503 can prevent the filter residue that moves to the end of the filter spiral 5 near the bottom of the diversion box 1 from entering the inner cavity of the diversion box 1. The end of the filter spiral 5 near the bottom of the diversion box 1 is the bottom of the filter spiral 5. When the first driving unit 7 drives the filter spiral 5 to slide out of the filter tube 4, the filter residue on the spiral blade 501 is taken out of the filter tube 4. At this time, the filter spiral 5 is still rotating. The rotating filter spiral 5 throws out the filter residue on the spiral blade 501 to prevent the filter residue pile from blocking the filter hole 6 and affecting the filtering effect. The water flow that has been filtered by the filter spiral 5 flows into the inner cavity of the diverter box 1 and then flows out of the diverter box 1 along the outlet pipe 3 to proceed to the next water treatment process.

[0026] Beneficial effects of this embodiment: The surface source pollution diversion device in this scheme can discharge the filter residue generated in the process of filtering the water body from the device without stopping the device to clean the filter residue, so that the device can continue to work and improve the working efficiency of the device.

[0027] Example 2

[0028] Embodiment 2 of a sewage diversion device for preventing and controlling agricultural non-point source pollution, as shown in Figure 1-Figure 3 As shown, based on Example 1, the structures of the filter spiral 5 and the filter tube 4 are further limited.

[0029] Specifically, the first driving unit 7 includes a first guide seat fixedly connected to the outer wall of the diversion box 1, a first linear motor 701 fixedly connected to the first guide seat, a first connecting block 702 fixedly connected to the driving end of the first linear motor 701, and a first rotating motor 703 located on the first connecting block 702. The axial direction of the first linear motor 701 is the same as the axial direction of the filter tube 4, and the driving end of the first rotating motor 703 is fixedly connected to the winding shaft 502 of the filter spiral 5.

[0030] Specifically, a side plate 504 for intercepting filter residue is provided at one end of the spiral blade 501 away from the winding shaft 502, and the side plate 504 is fixedly connected to the spiral blade 501. The side plate 504 is also provided with array-arranged filter holes 6. The distance from the connection point of the filter tube 4 with the water inlet pipe 2 to the connection point of the filter tube 4 with the side wall of the diversion box 1 is 1 / 2 of the length of the filter tube 4.

[0031] The working principle or working process of this embodiment is as follows: when the filter spiral 5 slides out of the filter tube 4, the groove formed by the side plate 504 and the spiral blade 501 of the filter spiral 5 will reverse during the rotation. After the reverse rotation, the filter residue on the filter spiral 5 will fall off the filter spiral 5 due to its own gravity.

[0032] Beneficial effects of this embodiment: the first driving unit 7 drives the filter spiral 5 to slide in the filter tube 4 through the first linear motor 701, and drives the filter spiral 5 to rotate through the first rotary motor 703. The setting of the side plate 504 can block the filter residue thrown from the spiral blade 501 to the inner wall of the filter tube 4. After the filter hole 6 is set on the side plate 504, the water flowing through the filter spiral 5 can also flow out from the filter hole 6 on the side plate 504, increasing the flow rate of the water flow. When the distance from the connection between the filter tube 4 and the water inlet pipe 2 to the connection between the filter tube 4 and the side wall of the diversion box 1 is too long, it is 1 / 4-1 / 2 of the length of the filter tube 4, and the filtering effect of the filter spiral 5 is the best at this time.

[0033] Example 3

[0034] Embodiment 3 of a sewage diversion device for preventing and controlling agricultural non-point source pollution, as shown in Figure 1-Figure 4 As shown, based on Example 1 or Example 2, other structures of the device are further limited.

[0035] Specifically, a slag discharge pipe 8 is provided on the side wall of the diverter box 1, which is located in the inner cavity of the diverter box 1 and connected to the outside. One end of the slag discharge pipe 8 is fixedly connected to the side wall of the diverter box 1, and the other end is close to the bottom of the diverter box 1. A slag discharge spiral 9 is provided in the slag discharge pipe 8. The rotating blades 901 of the slag discharge spiral 9 are used to discharge the filter residue at the bottom of the diverter box 1. A second driving part 10 is also provided on the outer side wall of the diverter box 1 to drive the slag discharge spiral 9 to rotate in reverse and slide in the filter tube 4. The second driving part 10 is connected to the rotating shaft 902 of the filter spiral 5.

[0036] Specifically, the second driving unit 10 includes a second guide seat fixedly connected to the outer wall of the diversion box 1, a second linear motor 1001 fixedly connected to the second guide seat, a second connecting block 1002 fixedly connected to the driving end of the second linear motor 1001, and a second rotating motor 1003 located on the second connecting block 1002. The axial direction of the second linear motor 1001 is the same as the axial direction of the slag discharge pipe 8, and the driving end of the second rotating motor 1003 is fixedly connected to the rotating shaft 902.

[0037] Specifically, a baffle 903 for intercepting filter residue is provided at one end of the rotating blade 901 away from the rotating shaft 902, and the baffle 903 is fixedly connected to the rotating blade 901. The acute angle between the axis of the slag discharge pipe 8 and the bottom surface of the diverter box 1 is in the range of 30°.

[0038] Specifically, the line connecting one end of the slag discharge pipe 8 near the bottom of the diverter box 1 and one end of the filter tube 4 near the bottom of the diverter box 1 is perpendicular to the bottom plane of the diverter box 1. A partition 11 is also provided at the bottom of the inner cavity of the diverter box 1 to intercept the filter residue from entering the water outlet pipe 3. The water outlet pipe 3 is located on one side of the partition 11, and one end of the slag discharge pipe 8 near the bottom of the diverter box 1 is located on the other side of the partition 11.

[0039] The working principle or working process of this embodiment:

[0040] Beneficial effects of this embodiment: the slag discharge screw 9 can discharge the filter residue accumulated at the bottom of the diverter box 1 from the diverter box 1 along the slag discharge pipe 8 by rotating, so as to prevent the filter residue that falls into the bottom of the diverter box 1 from clogging the water outlet pipe 3 after accumulation. At the same time, the slag discharge screw 9 can also slide out of the slag discharge pipe 8, and throw the filter residue on the slag discharge screw 9 out of the slag discharge pipe 8. The second driving unit 10 drives the slag discharge screw 9 to slide in the slag discharge pipe 8 through the second linear motor 1001, and drives the slag discharge screw 9 to rotate through the second rotating motor 1003. The setting of the baffle 903 can block the filter residue thrown from the rotating blade 901 to the inner wall of the slag discharge pipe 8. When the angle range of the acute angle between the axis of the slag discharge pipe 8 and the bottom surface of the diverter box 1 is 30°, the filter residue accumulated at the bottom of the diverter box 1 can be smoothly discharged through the slag discharge screw 9. The line connecting one end of the slag discharge pipe 8 near the bottom of the diverter box 1 and one end of the filter pipe 4 near the bottom of the diverter box 1 is perpendicular to the bottom plane of the diverter box 1, so that the end of the filter pipe 4 is located directly above the end of the slag discharge pipe 8, and the filter residue falling out of the filter pipe 4 is closer to the end of the slag discharge pipe 8 when falling, which is more convenient for the slag discharge spiral 9 to discharge the filter residue. The setting of the partition 11 can separate the filter residue from the water outlet pipe 3 to prevent the filter residue from clogging the water outlet pipe 3.

[0041] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A sewage diversion device for preventing and controlling agricultural non-point source pollution, characterized in that: The invention comprises a diverter box (1), a water inlet pipe (2) located at the top of the diverter box (1), and a water outlet pipe (3) located at the bottom of the side wall of the diverter box (1); a filter pipe (4) located in the inner cavity of the diverter box (1) and connected to the outside is provided on the side wall of the diverter box (1); one end of the filter pipe (4) is fixedly connected to the side wall of the diverter box (1), and the other end is inclined toward the bottom of the diverter box (1); the water inlet pipe (2) passes through the top of the diverter box (1) and is connected to the filter pipe (4); A filter spiral (5) is provided in the filter tube (4); filter holes (6) are arranged in an array on the spiral blades (501) of the filter spiral (5); a shielding sheet (503) is provided at one end of the spiral blades (501) close to the bottom of the diverter box (1) for preventing filter residue from being discharged from the filter tube (4); a first driving part (7) is also provided on the outer wall of the diverter box (1) for driving the filter spiral (5) to rotate in the opposite direction and slide in the filter tube (4); the first driving part (7) is connected to the winding shaft (502) of the filter spiral (5).

2. A sewage cleaning and diversion device for preventing and controlling agricultural non-point source pollution according to claim 1, characterized in that: The first driving part (7) comprises a first guide seat fixedly connected to the outer wall of the diverter box (1), a first linear motor (701) fixedly connected to the first guide seat, a first connecting block (702) fixedly connected to the driving end of the first linear motor (701), and a first rotating motor (703) located on the first connecting block (702), wherein the axial direction of the first linear motor (701) is the same as the axial direction of the filter tube (4), and the driving end of the first rotating motor (703) is fixedly connected to the winding shaft (502) of the filter spiral (5).

3. The device for separating agricultural non-point source pollution according to claim 1, characterized in that: A side plate (504) for intercepting filter residue is provided at one end of the spiral blade (501) away from the winding shaft (502); the side plate (504) is fixedly connected to the spiral blade (501); and the side plate (504) is also provided with filter holes (6) arranged in an array.

4. The cleaning and sewage diversion device for preventing and controlling agricultural non-point source pollution according to claim 1 is characterized in that: The distance between the connection point of the filter tube (4) with the water inlet pipe (2) and the connection point of the filter tube (4) with the side wall of the diversion box (1) is 1 / 4-1 / 2 of the length of the filter tube (4).

5. The device for separating clean and polluted water for preventing and controlling agricultural non-point source pollution according to claim 1, characterized in that: The side wall of the diverter box (1) is also provided with a slag discharge pipe (8) located in the inner cavity of the diverter box (1) and connected to the outside. One end of the slag discharge pipe (8) is fixedly connected to the side wall of the diverter box (1), and the other end is close to the bottom of the diverter box (1). A slag discharge spiral (9) is provided in the slag discharge pipe (8). The rotating blades (901) of the slag discharge spiral (9) are used to discharge the filter residue at the bottom of the diverter box (1). The outer wall of the diverter box (1) is also provided with a second driving part (10) for driving the slag discharge spiral (9) to rotate in the opposite direction and slide in the filter tube (4). The second driving part (10) is connected to the rotating shaft (902) of the filter spiral (5).

6. A clean and polluted flow diversion device for preventing and controlling agricultural non-point source pollution according to claim 5, characterized in that: The second driving part (10) comprises a second guide seat fixedly connected to the outer wall of the diverter box (1), a second linear motor (1001) fixedly connected to the second guide seat, a second connecting block (1002) fixedly connected to the driving end of the second linear motor (1001), and a second rotating motor (1003) located on the second connecting block (1002), the axial direction of the second linear motor (1001) is the same as the axial direction of the slag discharge pipe (8), and the driving end of the second rotating motor (1003) is fixedly connected to the rotating shaft (902).

7. The device for separating clean and polluted water for preventing and controlling agricultural non-point source pollution according to claim 5, characterized in that: A baffle (903) for intercepting filter residue is provided on one end of the rotating blade (901) away from the rotating shaft (902), and the baffle (903) is fixedly connected to the rotating blade (901).

8. The clean-up and pollution diversion device for preventing and controlling agricultural non-point source pollution according to claim 5, characterized in that: The acute angle formed by the axis of the slag discharge pipe (8) and the bottom surface of the diversion box (1) is in the range of 20°-50°.

9. The device for separating clean and polluted water for preventing and controlling agricultural non-point source pollution according to claim 5, characterized in that: A line connecting one end of the slag discharge pipe (8) close to the bottom of the diverter box (1) and one end of the filter pipe (4) close to the bottom of the diverter box (1) is perpendicular to the bottom plane of the diverter box (1).

10. A clean and polluted flow diversion device for preventing and controlling agricultural non-point source pollution according to claim 9, characterized in that: A partition (11) is also provided at the bottom of the inner cavity of the diverter box (1) for intercepting filter residue from entering the water outlet pipe (3); the water outlet pipe (3) is located on one side of the partition (11); and one end of the slag discharge pipe (8) close to the bottom of the diverter box (1) is located on the other side of the partition (11).

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