River channel water taking device and water taking method

Abstract

The invention relates to the technical field of riverway water taking, in particular to a riverway water taking device which comprises a base and a horizontal water taking arm, a rotating motor is arranged in the base, the rotating motor is in transmission connection with a transmission shaft, and the horizontal water taking arm is arranged on the upper surface of the base and fixedly connected to the transmission shaft in a sleeving mode; the horizontal water taking arm is divided into a short arm and a long arm through a transmission shaft, the end of the short arm is flush with the side face of the base, the end of the long arm extends outwards, and an ultrasonic liquid level meter is arranged on the bottom face of the end of the long arm. A lifting device is further arranged at the end of the long arm. When the riverway water taking device is used, the long arm is rotated to the position above the water surface where water needs to be taken by controlling the rotating motor, the water pumping pipe and the water taking hose are driven by the lifting device to move downwards to the position below the water surface for water pumping and sampling, water at multiple positions can be taken according to needs by using the device, and use is convenient and flexible.

Description

Technical Field

[0001] The present invention relates to the technical field of river water intake, and in particular to a river water intake device and a water intake method. Background Art

[0002] With the rapid development of urban ecology and industrial production, sewage discharge and toxic gases are increasing. As a result, many ecological rivers are severely polluted, affecting people's normal lives. In order to monitor and manage river water quality, control pollutant emissions, improve river water quality, and promote the protection and treatment of the aquatic environment, river water sampling and testing is necessary.

[0003] In existing technologies, water extraction from rivers is mostly done manually. Due to limited manpower, in wider rivers, water cannot be collected from locations far from the riverbank. Only water at the riverbank can be collected. The water sampling location is single, so the data obtained from the test may be inaccurate, and manual water extraction is inefficient. Summary of the Invention

[0004] The present invention provides a river water intake device and a water intake method to achieve the purpose of automatically extracting river water from multiple positions in the river, with efficient water intake and flexible use.

[0005] To achieve the above-mentioned object, the technical solution of the present invention is as follows: a river water intake device is provided, the innovation of which is that it comprises a base and a horizontal water intake arm, a rotating motor is provided in the base, the rotating motor is connected to a transmission shaft, the horizontal water intake arm is placed on the upper surface of the base and fixedly sleeved on the transmission shaft; the horizontal water intake arm is divided into a short arm and a long arm by the transmission shaft, the end of the short arm is flush with the side of the base, the end of the long arm extends outward, and the bottom surface of the long arm end is provided with an ultrasonic liquid level gauge; the end of the long arm is also provided with a lifting device; It also includes a water intake hose, a water intake platform is provided on the front side of the base, a water intake bucket and a water pump are provided on the water intake platform, the water inlet end of the water pump is connected to one end of the water intake hose, and the water outlet end is connected to the water intake bucket, a connecting plate is provided at the bottom of the lifting device, the other end of the water intake hose is connected to a water pump, the water pump thread is passed through the connecting plate, and a water immersion sensor is provided on the side of the connecting plate; The long arm is rotated to the top of the river channel by a rotary motor, and the pumping pipe is driven down to the surface of the river channel by a lifting device. The pumping pump is started to extract river water. The river water passes through the pumping pipe, water intake hose and pumping pump in turn into the water collection bucket.

[0006] Furthermore, the lifting device includes a lifting motor and a lifting plate. The lifting motor is arranged on the upper surface of the long arm. The lifting motor is connected to an output shaft. A driving gear is fixed on the output shaft. A lifting hole is provided at the end of the long arm for the lifting plate to pass through. Small teeth are evenly provided on the side of the lifting plate close to the driving gear. The lifting plate is engaged with the driving gear through the small teeth; the connecting plate is provided at the bottom end of the lifting plate.

[0007] Furthermore, the top and bottom of any side surface of the lifting plate without small teeth are respectively extended outward with support plates, a limit rod is connected between the two support plates, and a limit sleeve is provided on the inner side surface of the lifting hole corresponding to the limit rod, and the limit rod is slidably sleeved in the limit sleeve.

[0008] Furthermore, it also includes a telescopic rod, the top end of which is fixed to the bottom of the long arm, the bottom end of which is fixed to the connecting plate, and the rod is located between the water pumping pipe and the lifting plate; Two U-shaped fixing pieces are provided at the bottom of the long arm, and the water intake hose is respectively passed through the two fixing pieces.

[0009] Furthermore, the long arm includes a long outer frame and a long inner wall, the long inner wall is slidably arranged in the long outer frame, and the open ends of the two fixing parts are respectively fixed to the bottom of the long inner wall and the long outer frame; the fixing part located on the long inner wall is arranged close to the telescopic rod; and it also includes a cylinder, which is arranged on the fixing part on the long outer frame, and the telescopic end is connected to the fixing part of the long inner wall.

[0010] Furthermore, the structure in which the long inner wall slides in the long outer frame is as follows: a slide groove for the long inner wall to slide is provided in the long outer frame, and a limiting slider is provided at the end of the long inner wall located in the long outer frame, and the outer diameter of the limiting slider is larger than the outer diameter of the long inner wall and is adapted to the slide groove; a limiting ring block is provided inwardly at the end of the slide groove close to the lifting device, and the limiting ring block is adapted to the long inner wall, and the inner diameter is smaller than the outer diameter of the limiting slider.

[0011] Furthermore, the water-drawing platform has an L-shaped cross-section, the water bucket is arranged on the horizontal part of the water-drawing platform, and the water pump is arranged at the vertical upper end of the water-drawing platform; the water bucket is provided with scale lines, and a bucket cover is provided on the top of the water bucket, the bucket cover is provided with a water inlet hole, and the water outlet end of the water pump is located above the water inlet hole; the bucket cover is also provided with a float liquid level switch, and the float liquid level switch extends into the water bucket.

[0012] Furthermore, it also includes a limiting member with an inverted L-shaped cross-section, the vertical portion of the limiting member is fixed on the side of the base flush with the end of the short arm, and the horizontal portion is arranged above the short arm.

[0013] Furthermore, it also includes a controller and a display, which are both arranged on the base, and the ultrasonic level meter, rotating motor, lifting motor, cylinder, water pump, water immersion sensor, float level switch and display are all communicatively connected to the controller.

[0014] To achieve the above object, the present invention further provides a river water intake method, the innovation of which is that the method is implemented by the above water intake device, and the specific steps include: S1. Prepare for Water Intake: Thread the water intake hose through the two fixtures. Connect one end to the water inlet of the pump. Connect the water intake pipe connected to the other end of the hose to the connecting plate. Start the rotary motor and rotate the horizontal water intake arm until the short arm is below the stopper and the long arm is above the river surface. S2. Water Depth Detection: An ultrasonic level meter measures the river depth below the end of the long arm and transmits the measurement data to the controller, which displays it on a display. The controller calculates the distance from the water intake point to the water surface based on the water depth and, based on the diameter of the drive gear, calculates the number of revolutions (n) the motor needs to rotate to move the lifting plate from the water surface to the water intake point. S3. Lowering the lifting device: Start the lifting motor, driving the lifting plate to descend, which in turn drives the water pump to pull the water hose downward. When the water level sensor touches the river surface, the controller controls the motor to rotate n revolutions according to the calculated number of revolutions n and then stops. At this time, the water pump reaches the desired pumping position; S4. Pumping water: The controller starts the pump to pump water. The river water passes through the pumping pipe, the water hose and the pump, and finally enters the water bucket. When the liquid level in the bucket reaches the required position, the float level switch communicates with the controller, and the controller stops the pump. S5. Lifting device rises: The controller controls the lifting motor to reverse, driving the lifting plate to rise, indirectly driving the water pump and water hose to rise; S6. Rotation of horizontal water intake arm: Start the rotary motor to drive the horizontal water intake arm to rotate, and rotate the long arm to be parallel to the river channel to complete water intake.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) When a river water intake device of the present invention is used, the long arm is rotated to above the water surface where water needs to be taken by controlling the rotary motor, and the water pumping pipe and the water intake hose are driven down to below the water surface by the lifting device to pump water and take samples. The device can be used to take water from multiple locations as needed, and is convenient and flexible to use.

[0016] (2) A river water intake method of the present invention achieves efficient water extraction through the coordinated use of a rotating motor, a horizontal water intake arm, a lifting device, a telescopic rod, a water intake hose and a water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a river water intake device of the present invention.

[0019] Figure 2 For the present invention Figure 1 Cross-sectional view of the connection between the lifting plate and the lifting hole.

[0020] Figure 3 This is a structural schematic diagram of Example 5 of a river water intake device of the present invention.

[0021] Figure 4 This is a cross-sectional view of a river water intake device of the present invention extending below the river surface. Figure 5 For the present invention Figure 4 A in the enlarged view.

[0022] Figure 6 The present invention is a flow chart of a method for taking water from a river.

[0023] Among them, 1. Base; 2. Horizontal water intake arm; 21. Short arm; 22. Long arm; 221. Long outer frame; 222. Long inner wall; 223. Cylinder; 224. Slide; 225. Limit slider; 226. Limit ring block; 3. Rotating motor; 4. Transmission shaft; 5. Ultrasonic level gauge; 6. Lifting device; 61. Lifting motor; 62. Lifting plate; 63. Output shaft; 64. Drive gear; 65. Lifting hole ; 66. Small teeth; 67. Support plate; 68. Limit rod; 69. Limit sleeve; 7. Water intake hose; 8. Water intake platform; 9. Water intake bucket; 10. Water pump; 11. Connecting plate; 12. Water suction pipe; 13. Water immersion sensor; 14. Telescopic rod; 15. Fixing part; 16. Scale line; 17. Bucket cover; 18. Water inlet hole; 19. Float level switch; 30. Limit part; 31. Controller; 32. Display. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The directional words such as "front side" involved in the present invention are only used to describe the drawings in the present invention, and are not limitations on the device of the present invention in actual use. In actual use, the orientation of the device shall be based on actual use.

[0026] Example 1: This example provides a river water intake device, such as Figure 1 As shown, it includes a base 1 and a horizontal water intake arm 2. A rotating motor 3 is provided in the base 1. The rotating motor 3 is connected to a transmission shaft 4. The horizontal water intake arm 2 is placed on the upper surface of the base 1 and is fixedly sleeved on the transmission shaft 4. The horizontal water intake arm 2 is divided into a short arm 21 and a long arm 22 through the transmission shaft 4. The end of the short arm 21 is flush with the side of the base 1, and the end of the long arm 22 extends outward. An ultrasonic liquid level meter 5 is provided on the bottom surface of the end of the long arm 22; a lifting device 6 is also provided at the end of the long arm 22.

[0027] This embodiment also includes a water intake hose 7, a water intake platform 8 is provided on the front side of the base 1, a water intake bucket 9 and a water pump 10 are provided on the water intake platform 8, the water inlet end of the water pump 10 is connected to one end of the water intake hose 7, and the water outlet end is connected to the water intake bucket 9, a connecting plate 11 is provided at the bottom of the lifting device 6, the other end of the water intake hose 7 is connected to a water suction pipe 12, the water suction pipe 12 is threaded through the connecting plate 11, and a water immersion sensor 13 is provided on the side of the connecting plate 11.

[0028] When using the river water intake device of this embodiment, the rotary motor 3 is controlled to rotate the long arm 22 to above the water surface where water is to be taken, and the lifting device 6 drives the water pump 12 and the water intake hose 7 to move below the water surface. The water pump 10 is started to pump river water. The river water passes through the water pump 12, the water intake hose 7 and the water pump 10 in sequence and enters the water intake bucket 9. The device can be used to collect water from multiple locations as needed, and is convenient and flexible to use.

[0029] Example 2. Based on the above example, the lifting device 6 of this example includes a lifting motor 61 and a lifting plate 62. The lifting motor 61 is arranged on the upper surface of the long arm 22. The lifting motor 61 is connected to the output shaft 63 in a transmission manner. A driving gear 64 is fixed on the output shaft 63. A lifting hole 65 is provided at the end of the long arm 22 for the lifting plate 62 to pass through. Small teeth 66 are evenly provided on the side of the lifting plate 62 close to the driving gear 64. The lifting plate 62 is engaged with the driving gear 64 through the small teeth 66; the connecting plate 11 is provided at the bottom end of the lifting plate 62.

[0030] The lifting device 6 of this embodiment drives the lifting plate 62 to move up and down by rotating the lifting motor 61 and engaging the driving gear 64 with the small teeth 66 on the lifting plate 62, thereby driving the water pumping pipe 12 connected to the bottom end of the connecting plate 11 and the lifting plate 62 to move up and down.

[0031] Example 3, based on the above embodiment, in this embodiment, the top and bottom of any side of the lifting plate 62 without the small teeth 66 are respectively extended outwards to form a support plate 67, such as Figure 2 As shown, a limiting rod 68 is connected between the two support plates 67 , and a limiting sleeve 69 is provided on the inner side of the lifting hole 65 corresponding to the limiting rod 68 , and the limiting rod 68 is slidably sleeved in the limiting sleeve 69 .

[0032] In this embodiment, the lifting plate 62 is connected to the limiting sleeve 69 in the lifting hole 65 via the limiting rod 68, which can guide the lifting plate 62 to ensure its vertical movement. In this embodiment, the top or bottom support plate 67 can be configured to be detachably connected to the limiting rod 68. When the lifting device 6 is not in use, the lifting plate 62 can be removed from the long arm 22 to avoid its height occupying space.

[0033] Embodiment 4, based on the above embodiment, this embodiment further includes a telescopic rod 14, the top end of which is fixed to the bottom of the long arm 22, and the bottom end of which is fixed to the connecting plate 11, and is located between the water pumping pipe 12 and the lifting plate 62; Two U-shaped fixing members 15 are provided at the bottom of the long arm 22 , and the water intake hose 7 passes through the two fixing members 15 respectively.

[0034] The telescopic rod 14 in this embodiment has a dual function of supporting and guiding the lifting plate 62, preventing the lifting plate 62 from being disengaged from the driving gear 64 due to gravity or other external forces, thereby ensuring the stability of the lifting plate 62 driven by the lifting motor 61.

[0035] The setting of the fixing member 15 of this embodiment can guide and support the water intake hose 7, so as to prevent it from falling into the water when pumping water without support or from causing an unstable connection with the water pump 10 due to gravity.

[0036] Example 5, based on the above embodiment, the long arm 22 of this embodiment includes a long outer frame 221 and a long inner wall 222, as shown in FIG. Figure 3 and 4 As shown, the long inner wall 222 is slidably arranged in the long outer frame 221, and the open ends of the two fixing members 15 are respectively fixed to the bottom of the long inner wall 222 and the long outer frame 221; the fixing member 15 located on the long inner wall 222 is arranged close to the telescopic rod 14; and it also includes a cylinder 223, which is arranged on the fixing member 15 on the long outer frame 221, and the telescopic end is connected to the fixing member 15 of the long inner wall 222.

[0037] The structure of the long arm 22 of this embodiment is designed for a wider river channel. The length of the long arm 22 can be adjusted according to the river width and the location where water needs to be taken in, and it is flexible to use. Figure 3 and 4As shown, the cylinder 223 is connected to the lower side surfaces of the two fixing members 15 to control the extension and contraction of the long inner wall 222 to control the length of the long arm 22 .

[0038] Example 6: Based on the above embodiment, the structure of the long inner wall 222 of this embodiment is slidably arranged in the long outer frame 221 as shown in FIG. Figure 5 As shown, a slide groove 224 is provided in the long outer frame 221 for the long inner wall 222 to slide, and a limiting slider 225 is provided at the end of the long inner wall 222 located in the long outer frame 221. The outer diameter of the limiting slider 225 is larger than the outer diameter of the long inner wall 222 and is adapted to the slide groove 224; a limiting ring block 226 is provided inwardly at the end of the slide groove 224 close to the lifting device 6. The limiting ring block 226 is adapted to the long inner wall 222, and the inner diameter is smaller than the outer diameter of the limiting slider 225.

[0039] The connection structure between the long inner wall 222 and the long outer frame 221 in this embodiment increases the stability of the connection between the long inner wall 222 and the long outer frame 221 and the stability of the expansion and contraction of the long inner wall 222 .

[0040] Example 7. Based on the above examples, the water-drawing platform 8 of this example has an L-shaped cross-section, the water-drawing bucket 9 is arranged on the horizontal part of the water-drawing platform 8, and the water pump 10 is arranged at the vertical upper end of the water-drawing platform 8; a scale line 16 is provided on the water-drawing bucket 9, a bucket cover 17 is provided on the top of the water-drawing bucket 9, a water inlet hole 18 is provided on the bucket cover 17, and the water outlet end of the water pump 10 is located above the water inlet hole 18; a float liquid level switch 19 is also provided on the bucket cover 17, and the float liquid level switch 19 extends into the water-drawing bucket 9.

[0041] In this embodiment, a float liquid level switch 19 is provided on the water intake bucket 9, and the water intake amount can be controlled to the required water intake amount through the float liquid level switch 19, which has high automation and is convenient and accurate in water intake.

[0042] Example 8: Based on the above examples, this example further includes a limit member 30 with an inverted L-shaped cross-section. The vertical portion of the limit member 30 is fixed on the side of the base 1 flush with the end of the short arm 21, and the horizontal portion is located above the short arm 21.

[0043] The limiting member 30 of this embodiment can guide the water intake hose 7 to descend during the water intake process through the lifting device 6 on the long arm 22, and indirectly limit the long arm 22 by limiting the support of the short arm 21, thereby ensuring the overall stability of the device.

[0044] In order to facilitate movement, moving wheels can be provided at the bottom of the base and the water collection platform.

[0045] Example 9. Based on the above examples, this example further includes a controller 31 and a display 32. The controller 31 and the display 32 are both arranged on the base 1. The ultrasonic level meter 5, the rotating motor 3, the lifting motor 61, the cylinder 223, the water pump 10, the water immersion sensor 13, the float level switch 19 and the display 32 are all communicatively connected to the controller 31.

[0046] The controller 31 in this embodiment can be a Siemens S7-1200 series controller 31 or a Siemens KTP700 Basic series controller 31. The controller 31 transmits information to the ultrasonic liquid level sensor, the water immersion sensor 13, the float liquid level switch 19, and the display 32, and controls the rotation motor 3, the lifting motor 61, the cylinder 223, and the water pump 10. Example 10: This example provides a method for taking water from a river. The method is implemented by the water taking device of the above example. The specific steps are as follows: Figure 6 As shown: S1. Water intake preparation: After the water intake hose 7 passes through the two fixings 15, one end is connected to the water inlet end of the water pump 10. The water intake pipe 12 connected to the other end of the water intake hose 7 is connected through the connecting plate 11. Start the rotary motor 3 and rotate the horizontal water intake arm 2 until the short arm 21 is located below the limit member 30 and the long arm 22 is located above the river surface; S2. Water depth detection: The water depth of the river water below the end of the long arm 22 is measured by the ultrasonic level meter 5, and the measurement data is transmitted to the controller 31 and displayed on the display 32; the controller 31 calculates the distance from the water intake position to the water surface according to the water depth, and calculates the number of revolutions n that the motor needs to rotate from the water surface to the water intake position of the lifting plate 62 according to the diameter of the driving gear 64; for example, the depth of the preset water intake position is 2 / 3 of the water depth. If the water depth is 3m, the depth of the water intake position is 2m, then the controller 31 calculates the number of revolutions n that the motor needs to rotate at a height of 2m according to the diameter of the driving gear 64.

[0047] S3. The lifting device is lowered: the lifting motor 61 is started, driving the lifting plate 62 to descend, thereby driving the pumping pipe 12 to pull the water hose 7 downward. When the water sensor 13 contacts the river water surface, the controller 31 controls the motor to rotate n revolutions according to the calculated number of revolutions n and then stops. At this time, the pumping pipe 12 reaches the desired pumping position; S4. Pumping water: The controller 31 controls the start of the pump 10 to pump water. The river water passes through the pumping pipe 12, the water hose 7 and the pump 10, and eventually enters the water bucket 9. When the liquid level in the water bucket 9 reaches the desired position, the float level switch 19 communicates with the controller 31, and the controller 31 controls the stop of the pump 10; S5 lifting device rises: the controller 31 controls the lifting motor 61 to reverse, driving the lifting plate 62 to rise, indirectly driving the pumping pipe 12 and the water hose 7 to rise; S6. Rotation of the horizontal water intake arm: Start the rotary motor 3 to drive the horizontal water intake arm 2 to rotate, and rotate the long arm 22 to be parallel to the river channel to complete water intake.

[0048] Example 11: Based on the above embodiment, this embodiment is aimed at taking water from a wider river channel, and the long arm 22 of this embodiment includes a long inner wall 222 and a long outer frame 221. The specific steps of the water taking method of this embodiment are as follows: S1. Water intake preparation: After the water intake hose 7 passes through the two fixings 15, one end is connected to the water inlet end of the water pump 10. The water intake pipe 12 connected to the other end of the water intake hose 7 is connected through the connecting plate 11. Start the rotary motor 3 and rotate the horizontal water intake arm 2 until the short arm 21 is located below the limit member 30 and the long arm 22 is located above the river surface; The cylinder 223 is started to extend to control the expansion and contraction of the long inner wall 222, so that the water pumping pipe 12 moves with the long inner wall 222 and is located above the water surface at the position where water needs to be taken.

[0049] S2. Water depth detection: The ultrasonic level meter 5 measures the depth of the river water below the end of the long arm 22 and transmits the measurement data to the controller 31 and displays it on the display 32; the controller 31 calculates the distance from the water intake position to the water surface based on the water depth and calculates the number of revolutions n required for the motor to rotate the lifting plate 62 from the water surface to the water intake position based on the diameter of the drive gear 64; S3. The lifting device is lowered: the lifting motor 61 is started, driving the lifting plate 62 to descend, thereby driving the pumping pipe 12 to pull the water hose 7 downward. When the water sensor 13 contacts the river water surface, the controller 31 controls the motor to rotate n revolutions according to the calculated number of revolutions n and then stops. At this time, the pumping pipe 12 reaches the desired pumping position; S4. Pumping water: The controller 31 controls the start of the pump 10 to pump water. The river water passes through the pumping pipe 12, the water hose 7 and the pump 10, and eventually enters the water bucket 9. When the liquid level in the water bucket 9 reaches the desired position, the float level switch 19 communicates with the controller 31, and the controller 31 controls the stop of the pump 10; S5 lifting device rises: the controller 31 controls the lifting motor 61 to reverse, driving the lifting plate 62 to rise, indirectly driving the pumping pipe 12 and the water hose 7 to rise; and through the cylinder 223 to retract the long inner wall 222 into the long outer frame 221; S6. Rotation of the horizontal water intake arm: Start the rotary motor 3 to drive the horizontal water intake arm 2 to rotate, and rotate the long arm 22 to be parallel to the river channel to complete water intake.

[0050] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary engineering technicians in this field should fall within the scope of protection of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A river water intake device, characterized by: It includes a base and a horizontal water intake arm. A rotating motor is provided in the base. The rotating motor is connected to a transmission shaft. The horizontal water intake arm is placed on the upper surface of the base and is fixedly sleeved on the transmission shaft. The horizontal water intake arm is divided into a short arm and a long arm by the transmission shaft. The end of the short arm is flush with the side of the base, and the end of the long arm extends outward. An ultrasonic liquid level meter is provided on the bottom surface of the long arm. The end of the long arm is also provided with a lifting device. It also includes a water intake hose, a water intake platform is provided on the front side of the base, a water intake bucket and a water pump are provided on the water intake platform, the water inlet end of the water pump is connected to one end of the water intake hose, and the water outlet end is connected to the water intake bucket, a connecting plate is provided at the bottom of the lifting device, the other end of the water intake hose is connected to a water pump, the water pump thread is passed through the connecting plate, and a water immersion sensor is provided on the side of the connecting plate; The long arm is rotated to the top of the river channel by a rotary motor, and the pumping pipe is driven down to the surface of the river channel by a lifting device. The pumping pump is started to extract river water. The river water passes through the pumping pipe, water intake hose and pumping pump in turn into the water collection bucket.

2. A river water intake device according to claim 1, characterized in that: The lifting device includes a lifting motor and a lifting plate. The lifting motor is arranged on the upper surface of the long arm. The lifting motor is connected to the output shaft. A driving gear is fixed on the output shaft. A lifting hole is provided at the end of the long arm for the lifting plate to pass through. Small teeth are evenly provided on the side of the lifting plate close to the driving gear. The lifting plate is engaged with the driving gear through the small teeth; the connecting plate is provided at the bottom end of the lifting plate.

3. A river water intake device according to claim 2, characterized in that: The top and bottom of any side of the lifting plate without small teeth are respectively extended outward with a support plate, a limit rod is connected between the two support plates, and a limit sleeve is provided on the inner side of the lifting hole corresponding to the limit rod, and the limit rod is slidably sleeved in the limit sleeve.

4. A river water intake device according to claim 2 or 3, characterized in that: It also includes a telescopic rod, the top end of which is fixed to the bottom of the long arm, the bottom end of which is fixed to the connecting plate, and the rod is located between the water pumping pipe and the lifting plate; Two U-shaped fixing pieces are provided at the bottom of the long arm, and the water intake hose is respectively passed through the two fixing pieces.

5. A river water intake device according to claim 4, characterized in that: The long arm includes a long outer frame and a long inner wall, the long inner wall is slidably arranged in the long outer frame, and the open ends of two fixing parts are respectively fixed to the long inner wall and the bottom of the long outer frame; the fixing part located on the long inner wall is arranged close to the telescopic rod; and it also includes a cylinder, which is arranged on the fixing part on the long outer frame, and the telescopic end is connected to the fixing part of the long inner wall.

6. A river water intake device according to claim 5, characterized in that: The structure in which the long inner wall slides in the long outer frame is as follows: a sliding groove for the long inner wall to slide is provided in the long outer frame, and a limiting slider is provided at the end of the long inner wall located in the long outer frame, and the outer diameter of the limiting slider is larger than the outer diameter of the long inner wall and is adapted to the sliding groove; a limiting ring block is provided inwardly at the end of the sliding groove close to the lifting device, and the limiting ring block is adapted to the long inner wall, and the inner diameter is smaller than the outer diameter of the limiting slider.

7. A river water intake device according to claim 6, characterized in that: The water-drawing platform has an L-shaped cross-section, a water bucket is arranged on the horizontal part of the water-drawing platform, and a water pump is arranged at the vertical upper end of the water-drawing platform; the water bucket is provided with scale lines, and a bucket cover is provided on the top of the water bucket, the bucket cover is provided with a water inlet hole, and the water outlet end of the water pump is located above the water inlet hole; the bucket cover is also provided with a float liquid level switch, and the float liquid level switch extends into the water bucket.

8. A river water intake device according to claim 7, characterized in that: It also includes a limiting member with an inverted L-shaped cross section, wherein the vertical portion of the limiting member is fixed on the side of the base flush with the end of the short arm, and the horizontal portion is arranged above the short arm.

9. The river water intake device according to claim 8, characterized in that: It also includes a controller and a display, which are both arranged on the base, and the ultrasonic level meter, rotating motor, lifting motor, cylinder, water pump, water immersion sensor, float level switch and display are all communicatively connected to the controller.

10. A method for taking water from a river, characterized by: The method is implemented by the water intake device according to any one of claims 1 to 9, and the specific steps include: S1. Prepare for Water Intake: Thread the water intake hose through the two fixtures. Connect one end to the water inlet of the pump. Connect the water intake pipe connected to the other end of the hose to the connecting plate. Start the rotary motor and rotate the horizontal water intake arm until the short arm is below the stopper and the long arm is above the river surface. S2. Water Depth Detection: An ultrasonic level meter measures the river depth below the end of the long arm and transmits the measurement data to the controller, which displays it on a display. The controller calculates the distance from the water intake point to the water surface based on the water depth and, based on the diameter of the drive gear, calculates the number of revolutions (n) the motor needs to rotate to move the lifting plate from the water surface to the water intake point. S3. Lowering the lifting device: Start the lifting motor, driving the lifting plate to descend, which in turn drives the water pump to pull the water hose downward. When the water level sensor touches the river surface, the controller controls the motor to rotate n revolutions according to the calculated number of revolutions n and then stops. At this time, the water pump reaches the desired pumping position; S4. Pumping water: The controller starts the pump to pump water. The river water passes through the pumping pipe, the water hose and the pump, and finally enters the water bucket. When the liquid level in the bucket reaches the required position, the float level switch communicates with the controller, and the controller stops the pump. S5. Lifting device rises: The controller controls the lifting motor to reverse, driving the lifting plate to rise, indirectly driving the water pump and water hose to rise; S6. Rotation of horizontal water intake arm: Start the rotary motor to drive the horizontal water intake arm to rotate, and rotate the long arm to be parallel to the river channel to complete water intake.

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