A river water interception and purification station

Abstract

This invention discloses a river water interception and purification station, comprising a ground base station and an interception dam. The ground base station includes a control cabinet, a micro-nano bubble generator, a sludge pump, and a sludge collection pool, all installed along the riverbank. The control cabinet controls and powers all electrical components. The interception dam comprises an upstream dam and a downstream dam, distributed along the river's flow direction. The upstream dam spans the river channel, while the downstream dam is located at a predetermined distance from the upstream dam on one side. An overflow channel is formed between the upstream and downstream dams. This interception effectively purifies the river water, promoting a healthy cycle of the aquatic ecosystem. Simultaneously, it collects floating debris and bottom sludge, preventing the accumulation of sediment, plastic bags, and silt, thus preventing further water pollution.

Description

Technical Field

[0001] This invention relates to the field of river interception and purification technology, and in particular to a river water quality interception and purification station. Background Technology

[0002] my country is crisscrossed by rivers, many of which flow downstream and converge into lakes.

[0003] The inventors believe that as rivers flow downstream, they accumulate a lot of silt, which causes sediment buildup in riverbeds. Furthermore, rivers pass through cities and farmland, and the volume of wastewater discharged from urban areas causes river levels to exceed the environment's self-purification capacity. Unabsorbed fertilizers from crops are carried into rivers by rainwater, leading to increased nitrogen and phosphorus levels in the river water and resulting in eutrophication.

[0004] The above situations all lead to increasingly serious water pollution. Based on this, the present invention proposes a river water quality interception and purification station. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a river water interception and purification station that intercepts river water, effectively purifies the water quality to promote the healthy development and circulation of the aquatic ecosystem, and collects floating debris on the water surface and silt at the bottom of the water, thereby preventing the sedimentation and accumulation of mud, plastic bags and silt, and thus preventing the water quality from being further polluted.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a river water quality interception and purification station, including a ground base station and an interception dam. The ground base station includes a control cabinet, a micro-nano bubble generator, a sludge pump and a sludge collection pool installed along the riverbank. The control cabinet is used for controlling and connecting the power supply of all electrical components.

[0007] The interception dam includes an upstream dam body and a downstream dam body, which are distributed along the river flow direction. The upstream dam body is set across the river channel, and the downstream dam body is set at a predetermined distance from the upstream dam body on one side of the upstream dam body. An overflow channel is formed between the upstream dam body and the downstream dam body. The upstream dam body has a sluice gate located underwater, which allows water to flow from the upstream into the overflow channel. A filter screen is installed in the sluice gate. The overflow channel is provided with support columns that are evenly distributed and connected between the upstream dam body and the downstream dam body and are arranged horizontally. Each support column is equipped with a purification unit that is evenly distributed on its top.

[0008] The upstream dam is equipped with a mobile mechanism that can travel long distances back and forth. Below the mobile mechanism is a shovel for cleaning floating objects on the river surface. A suction pipe for absorbing silt is installed in the middle of the shovel. The suction pipe draws out the silt and discharges it into a silt collection pool.

[0009] As a preferred embodiment of the present invention, the purification unit includes a grid box mounted on a support column. The grid box is filled with a gravel structure, and biological bags are filled in the gaps of the gravel structure. Several planting tubes are installed on the top of the grid box. The planting tubes are filled with an ecological floating bed and planted with aquatic plants. The ecological floating bed is a woven bag filled with an artificial substrate layer. The biological bags include zeolite particles, and microorganisms and nutrients are placed in the gaps of the zeolite particles. The roots of the aquatic plants penetrate the ecological floating bed and extend into the gravel structure.

[0010] As a preferred embodiment of the present invention, the output end of the micro-nano bubble generator is equipped with a diffusion pipe, the diffusion pipe extends into the overflow channel and a connector is installed on its outer wall, one end of the connector is rotatably provided with an aeration head, an air outlet pipe is connected to the outer wall of the aeration head, the air outlet pipe is bent, and the inner wall of the aeration head is provided with spiral cutting serrations.

[0011] As a preferred embodiment of the present invention, the moving mechanism includes a frame, a plurality of mounting plates are fixedly connected to the top of the frame, the frame is mounted on the upstream dam body through the mounting plates, a moving vehicle is arranged inside the frame, a motor A is fixedly installed at one end of the frame, a traction wheel is installed at the output end of the motor A, a guide wheel is fixedly installed at the other end of the frame, a steel wire rope is fixedly connected to one side of the moving vehicle, and the other end of the steel wire rope passes around the traction wheel and the guide wheel and is fixed to the other side of the moving vehicle.

[0012] As a preferred embodiment of the present invention, a guide rod is fixedly connected to the inner side of the frame, and a guide pulley is fixedly installed on the top of the mobile vehicle. The guide pulley contacts the guide rod and moves along the guide rod. A starting end position detection switch and a terminal position detection switch facing the starting end and the terminal end of the guide rod, respectively, are installed on the inner side of the frame.

[0013] As a preferred embodiment of the present invention, the shovel is fixedly installed on the bottom of the mobile vehicle, and a collection trough is provided on the riverbank at both ends of the upstream dam. The mobile vehicle drives the shovel to move across the river and push the floating objects on the river surface into the collection trough. A shovel is installed in the collection trough to retrieve the floating objects from the collection trough.

[0014] In a preferred embodiment of the present invention, the suction pipe is fixedly installed inside the dredging shovel. A drive shaft is installed inside the suction pipe, and a motor B is installed at the top of the suction pipe. The output end of the motor B passes through and extends into the suction pipe and is fixedly connected to the top end of the drive shaft. A mud roller fan, several cutting blades, and a spiral lifting auger are fixedly sleeved on the outer wall of the drive shaft from bottom to top. A connecting pipe is installed on the outer wall of the suction pipe. One end of the connecting pipe passes through the dredging shovel and is connected to a telescopic corrugated pipe. One end of the telescopic corrugated pipe is connected to the mud pump, and the mud pump discharges the pumped sludge into a sludge collection tank.

[0015] As a preferred embodiment of the present invention, a plurality of auxiliary plates are fixedly connected to the inner wall of the suction pipe, the drive shaft passes through the auxiliary plates and is rotatable between the auxiliary plates, and a cleaning brush is fixedly installed on the outer wall of the suction pipe, the cleaning brush contacting the surface of the filter screen.

[0016] As a preferred embodiment of the present invention, a steel cable is provided across the river channel on the front side of the upstream dam body, the steel cable passes through the cleaning brush, and the steel cable guides the cleaning brush.

[0017] As a preferred embodiment of the present invention, the height of the upstream dam is higher than that of the river channel, and the height of the downstream dam is lower than that of the river channel, forming a height difference between the upstream dam and the downstream dam.

[0018] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0019] By intercepting the upstream dam, the river water enters the overflow channel through the sluice gate and rises from bottom to top. Aquatic plants and microorganisms purify the water, while micro-nano bubble generators produce high-speed flowing micro-nano bubbles that enter the water body, effectively purifying the water quality. This not only results in a significant improvement in water quality but also promotes the healthy development and cycle of the aquatic ecosystem.

[0020] 2. The upstream dam and filter screen intercept silt, plastic bags, and other debris in the water. A mobile mechanism drives a mobile vehicle to move back and forth across the river. The mobile vehicle moves a shovel and a suction pipe to collect floating objects on the water surface and silt at the bottom of the water. This prevents silt, plastic bags, and other debris from settling and accumulating, thereby preventing further water pollution. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the planar structure of the present invention;

[0023] Figure 3This is a schematic diagram of the moving mechanism structure of the present invention;

[0024] Figure 4 This is a bottom view schematic diagram of the moving mechanism of the present invention;

[0025] Figure 5 This is a schematic diagram of the planar structure of the purification unit of the present invention;

[0026] Figure 6 This is a schematic diagram of the suction tube structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the suction tube of the present invention;

[0028] Figure 8 This is a schematic diagram showing the connection between the micro / nano bubble generator and the diffusion channel of the present invention;

[0029] Figure 9 This is a schematic diagram showing the connection between the connector and the aeration head of the present invention;

[0030] Figure 10 This is a schematic diagram of the aeration head structure from below according to the present invention;

[0031] Figure 11 For the present invention Figure 1 Enlarged structural diagram at point A in the middle.

[0032] The components include: 100, Ground base station; 110, Control cabinet; 120, Micro-nano bubble generator; 121, Diffusion pipe; 122, Connector; 123, Aeration head; 124, Air outlet pipe; 125, Spiral cutting serrations; 130, Sludge pump; 140, Sludge collection tank; 200, Interception dam; 210, Upstream dam body; 220, Downstream dam body; 230, Overflow channel; 240, Water gate; 250, Filter screen; 260, Support column; 300, Purification unit; 310, Grid box; 320, Gravel structure; 330, Bio-packet; 340, Planting tube; 350, Ecological floating bed; 360, Aquatic plants; 370, Zeolite particles; 400 410. Moving mechanism; 420. Frame; 430. Mounting plate; 431. Moving vehicle; 432. Guide rod; 433. Guide pulley; 440. Motor A; 450. Traction wheel; 460. Guide wheel; 470. Steel wire rope; 480. Starting position detection switch; 490. End position detection switch; 500. Salvage shovel; 600. Suction pipe; 610. Drive shaft; 620. Motor B; 630. Mud roller; 640. Cutting blade; 650. Spiral lifting auger; 660. Connecting pipe; 670. Telescopic corrugated pipe; 680. Auxiliary plate; 690. Cleaning brush; 700. Steel cable; 800. Collection trough; 900. Salvage device. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention. Example

[0034] like Figure 1 - Figure 11 As shown, this embodiment proposes a river water quality interception and purification station, including a ground base station 100 and an interception dam 200. The ground base station 100 includes a control cabinet 110, a micro-nano bubble generator 120, a sludge pump 130 and a sludge collection pool 140 set along the riverbank. The control cabinet 110 is used for the control and power supply of all electrical components.

[0035] The interception dam 200 includes an upstream dam body 210 and a downstream dam body 220, which are distributed along the river flow direction. The upstream dam body 210 is set across the river channel, and the downstream dam body 220 is set at a predetermined distance from the upstream dam body 210 on one side of the upstream dam body 210. An overflow channel 230 is formed between the upstream dam body 210 and the downstream dam body 220. A sluice gate 240 is opened on the upstream dam body 210, which is located underwater and allows water to flow from the upstream into the overflow channel 230. A filter screen 250 is installed in the sluice gate 240. Support columns 260 are evenly distributed and connected between the upstream dam body 210 and the downstream dam body 220 and are arranged laterally. A purification unit 300 is evenly distributed on the top of each support column 260.

[0036] Among them, a mobile mechanism 400 capable of long-distance reciprocating is built on the upstream dam body 210. Below the mobile mechanism 400, a shovel 500 for cleaning floating objects on the river surface is installed. A suction pipe 600 for absorbing silt is installed in the middle of the shovel 500. The suction pipe 600 draws out the silt and discharges it into the silt collection pool 140.

[0037] As a preferred embodiment of the present invention, the purification unit 300 includes a grid box 310, which is mounted on a support column 260. The grid box 310 is filled with a gravel structure 320, and the gaps in the gravel structure 320 are filled with bio-bags 330. Several planting tubes 340 are installed on the top of the grid box 310. The planting tubes 340 are filled with an ecological floating bed 350 and planted with aquatic plants 360. The ecological floating bed 350 is a woven bag filled with an artificial substrate layer. The bio-bags 330 include zeolite particles 370, and microorganisms and nutrients are placed in the gaps of the zeolite particles 370. The roots of the aquatic plants 360 pass through the ecological floating bed 350 and extend into the gravel structure 320.

[0038] Specifically, depending on the installation location of the grid box 310, the planted aquatic plants 360 are divided into submerged plants and emergent plants. During their growth, the aquatic plants 360 absorb and utilize essential plant elements such as nitrogen and phosphorus in the water, and the roots of the aquatic plants 360 and the ecological floating bed 350 adsorb suspended solids in the water, enriching harmful substances in the water. Furthermore, the roots of the aquatic plants 360 release a large amount of secretions that can degrade organic matter, thereby accelerating the decomposition of organic pollutants. With the improvement of some water quality indicators, especially the significant increase in dissolved oxygen, conditions are created for the large-scale reproduction of microorganisms. Furthermore, the microorganisms and nutrients within the bio-pack 330 are adsorbed onto the zeolite particles 370. The nutrients provide nourishment for the growth of microorganisms, and the pores of the zeolite particles 370 can serve as a carrier for the reproduction of microorganisms. The roots of the aquatic plants 360 can also provide a carrier for the growth of microorganisms in the water. Therefore, microorganisms can reproduce in large numbers. Through the purification of the water by microorganisms, nitrogen removal, removal of high concentrations of organic matter, and removal of substances that are difficult to biodegrade, the natural purification capacity of the water body is greatly enhanced. This not only results in a significant improvement in water quality but also promotes the benign development and cycle of the aquatic ecosystem.

[0039] As a preferred technical solution of the present invention, the output end of the micro-nano bubble generator 120 is equipped with a diffusion pipe 121, the diffusion pipe 121 extends into the overflow channel 230 and a connector 122 is installed on its outer wall, one end of the connector 122 is rotatably provided with an aeration head 123, an air outlet pipe 124 is connected to the outer wall of the aeration head 123, the air outlet pipe 124 is bent, and the inner wall of the aeration head 123 is provided with spiral cutting serrations 125.

[0040] Specifically, the micro-nano bubble generator 120 generates high-speed flowing micro-nano bubbles, which flow through the diffusion pipe 121, then through the connector 122 and the aeration head 123 before being ejected from the outlet pipe 124. When the high-speed flowing micro-nano bubbles enter the aeration head 123, they first pass through the spiral cutting serrations 125 inside the aeration head 123. The spiral cutting serrations 125 further increase the centrifugal speed of the micro-nano bubbles and cut them, making the bubbles smaller and further improving the dissolved oxygen efficiency. When the micro-nano bubbles are ejected from the outlet pipe 124, the high-speed flowing micro-nano bubbles impact the water. Due to the bend in the outlet pipe 124, the aeration head 123 can be rotated, thus realizing the rotational ejection of micro-nano bubbles in the water, further increasing the mixing range between micro-nano bubbles and water, and providing sufficient oxygen for the metabolism of aerobic organisms in the water. Micro-nano bubbles have special physicochemical properties such as long survival time, large specific surface area, high interfacial activity, and the ability to carry electricity, effectively purifying water quality.

[0041] As a preferred embodiment of the present invention, the moving mechanism 400 includes a frame 410, with a plurality of mounting plates 420 fixedly connected to the top of the frame 410. The frame 410 is mounted on the upstream dam body 210 via the mounting plates 420. A moving vehicle 430 is provided on the inner side of the frame 410. A motor A440 is fixedly mounted on one end of the frame 410, and a traction wheel 450 is mounted on the output end of the motor A440. A guide wheel 460 is fixedly mounted on the other end of the frame 410. A moving vehicle 430 is fixedly connected to one side of the moving vehicle 430. A steel wire rope 470 is provided, with its other end passing over a traction wheel 450 and a guide wheel 460 and then fixed to the other side of a mobile vehicle 430. A guide rod 431 is fixedly connected to the inner side of a frame 410. A guide pulley 432 is fixedly installed on the top of the mobile vehicle 430. The guide pulley 432 contacts the guide rod 431 and moves along the guide rod 431. A starting position detection switch 480 and a terminal position detection switch 490, respectively facing the starting end and the terminal end of the guide rod 431, are installed on the inner side of the frame 410.

[0042] Specifically, control cabinet 110 controls motor A440, which can be directly connected to or connected to traction wheel 450 via a reducer. Traction wheel 450 pulls moving vehicle 430 via steel wire rope 470 and guide wheel 460. Moving vehicle 430 drives guide pulley 432 to move along guide rod 431. When moving vehicle 430 moves, the position of moving vehicle 430 and the start and stop of motor A440 are detected by starting position detection switch 480 and ending position detection switch 490. After moving vehicle 430 moves from the starting section to the ending position, motor A440 reverses and pulls moving vehicle 430 back to the starting section, realizing the reciprocating movement of moving vehicle 430 across the river.

[0043] As a preferred technical solution of the present invention, the shovel 500 is fixedly installed at the bottom of the mobile vehicle 430. A collection trough 800 is provided on the riverbank at both ends of the upstream dam (210). The mobile vehicle 430 drives the shovel 500 to move across the river and push the floating objects on the river surface into the collection trough 800. A shovel 900 for scooping out the floating objects in the collection trough 800 is installed in the collection trough 800.

[0044] Specifically, when the mobile mechanism 400 drives the mobile vehicle 430 to move back and forth, the shovel 500 pushes the floating objects intercepted by the upstream dam 210 and floating on the water surface to the collection tank 800. The retrieval device 900 in the collection tank 800 picks up the floating objects for further processing. The retrieval device 900 adopts existing publicly available technology, which will not be described in detail here.

[0045] In a preferred embodiment of the present invention, a suction pipe 600 is fixedly installed inside the dredging shovel 500. A drive shaft 610 is installed inside the suction pipe 600. A motor B620 is installed at the top of the suction pipe 600. The output end of the motor B620 passes through and extends into the suction pipe 600 and is fixedly connected to the top end of the drive shaft 610. A mud-rolling fan 630, several cutting blades 640, and a spiral lifting auger 650 are fixedly sleeved on the outer wall of the drive shaft 610 from bottom to top. A connecting device is installed on the outer wall of the suction pipe 600. A connecting pipe 660 is provided, one end of which passes through the dredging shovel 500 and is connected to a telescopic corrugated pipe 670. One end of the telescopic corrugated pipe 670 is connected to a sludge pump 130. The sludge pump 130 discharges the pumped sludge into the sludge collection tank 140. Several auxiliary plates 680 are fixedly connected to the inner wall of the suction pipe 600. A drive shaft 610 passes through the auxiliary plates 680 and can rotate between the auxiliary plates 680. A cleaning brush 690 is fixedly installed on the outer wall of the suction pipe 600. The cleaning brush 690 contacts the surface of the filter screen 250.

[0046] Specifically, when the mobile mechanism 400 drives the mobile vehicle 430 to move back and forth, it can also drive the suction pipe 600 to move back and forth. By turning on the sludge pump 130 and the motor B620, the motor B620 can be directly connected to or connected to the drive shaft 610 through a reducer. The drive shaft 610 rotates stably under the support of the auxiliary plate 680. The drive shaft 610 drives the mud roller 630, the cutting blade 640 and the spiral lifting auger 650 to rotate. The mud roller 630 rolls up the sludge and pushes it towards the suction pipe 600. With the help of the sludge pump 130, the sludge is fed into the suction pipe 600. Then the rotating cutting blade 640 cuts the sludge to form mud. Subsequently, the spiral lifting auger 650, together with the sludge pump 130, sucks the mud into the sludge collection pool 140 through the connecting pipe 660 and the telescopic corrugated pipe 670, thus realizing the dredging work in the river.

[0047] Therefore, it can be seen that the river water quality interception and purification station provided by the present invention can intercept and purify the river that flows from upstream to downstream into the lake.

[0048] First, the river flowing from upstream to downstream into the lake is intercepted by the upstream dam 210. The river water enters the overflow channel 230 through the sluice gate 240. As the water passes through the sluice gate 240, it is filtered by the filter screen 250. The water can rise from bottom to top in the overflow channel 230. During this process, the water continuously comes into contact with the purification unit 300, where aquatic plants 360 and microorganisms purify the water, removing nitrogen and high concentrations of organic matter, as well as substances that are difficult to biodegrade, thus greatly enhancing the natural purification capacity of the water. At the same time, the micro-nano bubble generator 120 generates high-speed flowing micro-nano bubbles, which flow through the diffusion pipe 121 and then through the connector 122 and aeration head 123 before being sprayed into the water body through the air outlet pipe 124. This provides sufficient oxygen for the metabolism of aerobic organisms in the water. Micro-nano bubbles have special physicochemical properties such as long survival time, large specific surface area, high interfacial activity, and the ability to carry electricity, which effectively purify water quality. This not only shows a significant improvement in water quality but also promotes the healthy development and cycle of the aquatic ecosystem.

[0049] Secondly, the upstream dam 210 and filter screen 250 intercept sediment and plastic bags in the water. A mobile mechanism 400 drives a mobile vehicle 430 to move back and forth across the river channel. The mobile vehicle 430, along with a shovel 500, pushes the floating debris intercepted by the upstream dam 210 onto the collection tank 800. The shovel 900 in the collection tank 800 retrieves the floating debris for further processing. The mobile vehicle 430 also drives the suction pipe 600 to move back and forth, and a sludge pump 130, through a connecting pipe 660 and a telescopic corrugated pipe 670, sucks the sludge into the sludge collection pond 140, thus achieving river dredging and preventing the accumulation of sediment, plastic bags, and sludge, thereby preventing further water pollution.

[0050] Finally, as the water level rises in the overflow channel 230, it overflows from the downstream dam 220. The purified water flows into the lake via the river. The difference in height between the upstream dam 210 and the downstream dam 220 allows the overflowing water to form a small waterfall in the downstream dam 220, thus creating a scenic view.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A river water quality interception and purification station, comprising a ground base station (100) and an interception dam (200), characterized in that: The ground base station (100) includes a control cabinet (110), a micro-nano bubble generator (120), a sludge pump (130), and a sludge collection tank (140) set along the riverbank. The control cabinet (110) is used for the control and power supply of all electrical components. The output end of the micro-nano bubble generator (120) is equipped with a diffusion pipe (121). The diffusion pipe (121) extends into the overflow channel (230) and has a connector (122) installed on its outer wall. One end of the connector (122) is rotatably equipped with an aeration head (123). An air outlet pipe (124) is connected to the outer wall of the aeration head (123). The air outlet pipe (124) is bent. The inner wall of the aeration head (123) is provided with spiral cutting serrations (125). The intercepting dam (200) includes an upstream dam body (210) and a downstream dam body (220), which are distributed along the river flow direction. The upstream dam body (210) is set across the river channel, and the downstream dam body (220) is set at a predetermined distance from the upstream dam body (210) on one side of the upstream dam body (210). An overflow channel (230) is formed between the upstream dam body (210) and the downstream dam body (220). The upstream dam body (210) is provided with a water gate (240) located underwater, which allows water to flow from the upstream into the overflow channel (230). A filter screen (250) is installed in the water gate (240). The overflow channel (230) is provided with support columns (260) that are evenly distributed and connected between the upstream dam body (210) and the downstream dam body (220) and are arranged horizontally. Each support column (260) is provided with a purification unit (300) that is evenly distributed on its top. The upstream dam (210) is equipped with a mobile mechanism (400) capable of long-distance reciprocating motion. Below the mobile mechanism (400) is a shovel (500) for cleaning floating debris from the river surface. A suction pipe (600) for absorbing silt is installed in the middle of the shovel (500). The suction pipe (600) extracts the silt and discharges it into a silt collection pool (140). The mobile mechanism (400) includes a frame (410). Several mounting plates (420) are fixedly connected to the top of the frame (410). The frame (410) is mounted on the upstream dam (210) via the mounting plates (420). A mobile vehicle (430) is installed inside the frame (410). A motor A (440) is fixedly installed at one end of the frame (410). A traction wheel (450) is installed at the output end of the frame (410), and a guide wheel (460) is fixedly installed at the other end of the frame (410). A steel wire rope (470) is fixedly connected to one side of the mobile vehicle (430), and the other end of the steel wire rope (470) passes around the traction wheel (450) and the guide wheel (460) and is fixed to the other side of the mobile vehicle (430). A guide rod (431) is fixedly connected to the inner side of the frame (410), and a guide pulley (432) is fixedly installed on the top of the mobile vehicle (430). The guide pulley (432) contacts the guide rod (431) and moves along the guide rod (431). A starting position detection switch (480) and a terminal position detection switch (490) facing the starting end and the terminal end of the guide rod (431) respectively are installed on the inner side of the frame (410).

2. The river water quality interception and purification station according to claim 1, characterized in that: The purification unit (300) includes a grid box (310), which is installed on a support column (260). The grid box (310) is filled with a gravel structure (320), and the gaps in the gravel structure (320) are filled with bio-bags (330). Several planting tubes (340) are installed on the top of the grid box (310). The planting tubes (340) are filled with an ecological floating bed (350) and planted with aquatic plants (360). The ecological floating bed (350) is a woven bag filled with an artificial substrate layer. The biological package (330) includes zeolite particles (370), and microorganisms and nutrients are placed in the gaps of the zeolite particles (370). The roots of the aquatic plants (360) pass through the ecological floating bed (350) and extend into the gravel structure (320).

3. The river water quality interception and purification station according to claim 1, characterized in that: The salvage shovel (500) is fixedly installed at the bottom of the mobile vehicle (430). A collection trough (800) is set on the riverbank at both ends of the upstream dam (210). The mobile vehicle (430) drives the salvage shovel (500) to move across the river and push the floating objects on the river surface into the collection trough (800). A salvage device (900) for scooping out the floating objects in the collection trough (800) is installed in the collection trough (800).

4. A river water quality interception and purification station according to claim 1, characterized in that: The suction pipe (600) is fixedly installed inside the dredging shovel (500). A drive shaft (610) is installed inside the suction pipe (600). A motor B (620) is installed at the top of the suction pipe (600). The output end of the motor B (620) extends through and into the suction pipe (600) and is fixedly connected to the top end of the drive shaft (610). Mud rollers are fixedly sleeved on the outer wall of the drive shaft (610) from bottom to top. 630), several cutting blades (640), and a spiral lifting auger (650). A connecting pipe (660) is installed on the outer wall of the suction pipe (600). One end of the connecting pipe (660) passes through the dredging shovel (500) and is connected to a telescopic corrugated pipe (670). One end of the telescopic corrugated pipe (670) is connected to the mud pump (130). The mud pump (130) discharges the pumped sludge into the sludge collection pool (140).

5. A river water quality interception and purification station according to claim 4, characterized in that: A number of auxiliary plates (680) are fixedly connected to the inner wall of the suction pipe (600). The drive shaft (610) passes through the auxiliary plates (680) and is rotatable between the auxiliary plates (680). A cleaning brush (690) is fixedly installed on the outer wall of the suction pipe (600). The cleaning brush (690) contacts the surface of the filter screen (250).

6. A river water quality interception and purification station according to claim 5, characterized in that: A steel cable (700) is installed across the river channel on the front side of the upstream dam body (210). The steel cable (700) passes through the cleaning brush (690) and guides the cleaning brush (690).

7. A river water quality interception and purification station according to claim 1, characterized in that: The height of the upstream dam (210) is higher than the river channel, and the height of the downstream dam (220) is lower than the river channel, forming a height difference between the upstream dam (210) and the downstream dam (220).

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