River ecological restoration device

Abstract

The invention discloses a river channel ecological restoration device which comprises a first supporting frame and is characterized in that lifting devices are arranged at the left end and the right end of the first supporting frame correspondingly, a second supporting frame is arranged between the two lifting devices, a cylindrical negative-pressure shell is arranged at the lower end of the second supporting frame, and the lower end of the cylindrical negative-pressure shell communicates with an L-shaped water inlet pipe; a first impeller is rotatably connected to the interior of the cylindrical negative-pressure shell, an L-shaped aeration pipe is communicated with the outer side of the cylindrical negative-pressure shell, a second impeller is rotatably connected to one end of the L-shaped aeration pipe, a piston sleeve rod is rotatably connected to the interior of the first supporting frame, a piston block is slidably connected to the interior of the piston sleeve rod, and a piston rod is arranged at the lower end of the piston block; a speed change mechanism is arranged at the upper end of the piston sleeve rod. A transmission device is arranged between the piston rod and the first rotating shaft. According to the device, the aeration range can be conveniently adjusted according to the depth of a river channel, the aeration effect is improved, and a medicament can be better added into the river channel, so that the restoration effect on the river channel is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of river ecological restoration, and particularly relates to a river ecological restoration device. Background Art

[0002] River restoration refers to the process of restoring the natural functions, ecological structures, and landscape values of damaged rivers through a series of engineering, ecological, and management measures, so that they reach or approach the natural state, improve the self-purification ability of water bodies, improve the water environment quality, and at the same time meet the social and economic needs such as flood control, water supply, and irrigation. A healthy river ecosystem is an important habitat for biodiversity and can provide breeding, foraging, and shelter places for many aquatic organisms. In the prior art, when restoring rivers, aeration equipment is usually used to improve the dissolved oxygen content in the water body by injecting air or pure oxygen into the water body, so that the dissolved oxygen reacts with the pollutants in the water body, thereby improving the water quality. However, when the existing aeration equipment is in use, it cannot adjust the aeration range according to the depth of the river, which easily affects the river restoration efficiency. In addition, the existing aeration equipment has a single function and only relies on aeration to repair the water body, and the repair effect is not ideal. Summary of the Invention

[0003] The purpose of the present invention is to provide a river ecological restoration device that can conveniently adjust the aeration range according to the depth of the river, improve the aeration effect, and can better add medicaments into the river, thereby improving the restoration effect on the river.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: A river ecological restoration device includes a first support frame. Lifting devices are arranged at both the left and right ends of the first support frame. A second support frame is arranged between the ends of the two lifting devices away from the first support frame. A plurality of cylindrical negative pressure shells are equidistantly arranged at the lower end of the second support frame. An L-shaped water inlet pipe is communicated with the lower end of each cylindrical negative pressure shell. A first impeller is rotatably connected inside each cylindrical negative pressure shell. A first rotating shaft rotatably connected to the corresponding cylindrical negative pressure shell is vertically arranged at the upper end of each first impeller. An L-shaped aeration pipe is communicated with the outside of each cylindrical negative pressure shell. A second impeller is rotatably connected to the upper end of the outside of each L-shaped aeration pipe. A telescopic air guide pipe communicated with each L-shaped aeration pipe is arranged between the first support frame and the second support frame; A piston sleeve rod vertically arranged is rotatably connected inside the first support frame. A piston block is slidably connected inside the piston sleeve rod. Limiting strips are arranged on the inner sides of the piston sleeve rod. Limiting openings slidably connected to the limiting strips are formed on the outer sides of the piston block. A piston rod vertically arranged at the lower end of the piston block and slidably connected to the piston sleeve rod and rotatably connected to the second support frame is provided. A speed-changing mechanism is arranged at the upper end of the piston sleeve rod. A transmission device for driving the first impeller to rotate is arranged between the piston rod and the first rotating shaft. A chemical adding tank is arranged inside the first support frame. A stirring device is rotatably connected inside the chemical adding tank. A medicine guiding pipe communicating with each L-shaped aeration pipe is connected to the lower end of the chemical adding tank. A driving device for driving the speed-changing mechanism and the stirring device is arranged inside the first support frame; The speed-changing mechanism includes a plurality of horizontally arranged limiting sleeve rods communicated with the upper ends outside the piston sleeve rod, limiting sliders slidably connected inside each limiting sleeve rod, limiting rods horizontally arranged at the ends of each limiting slider away from the piston sleeve rod and slidably connected to the corresponding limiting sleeve rods, first springs arranged on the outer sides of each limiting rod between the corresponding limiting sliders and the corresponding limiting sleeve rods, and arc-shaped strips arranged at the ends of each limiting rod away from the corresponding limiting sliders and passing through the corresponding limiting sleeve rods.

[0005] By adopting the above technical solution, during use, it is fixed to both banks of the river through the first support frame. The lifting device is adjusted to place the second support frame into the river. The position of the second support frame is adjusted according to the river depth. After the medicament is blended, it is added to the medicine adding tank. Then the driving device is started. The driving device drives the stirring device, and the stirring device stirs the medicament in the medicine adding tank to prevent precipitation. At the same time, the driving device drives the speed change mechanism to rotate, and the speed change mechanism drives the piston sleeve to rotate. Due to the limiting effect of the limiting strip and the limit, the piston sleeve rod drives the piston block to rotate, and the piston block drives the piston rod to rotate. The piston rod drives the first rotating shaft and the second impeller to rotate through the transmission mechanism. The first rotating shaft drives the first impeller to rotate, generating negative pressure in the cylindrical negative pressure shell. The water body is extracted through the L-shaped water inlet pipe. At the same time, the medicament in the medicine adding tank is extracted into the cylindrical negative pressure shell through the medicine guiding pipe and mixed with the water body. The telescopic air guide pipe extracts air. After the air, water body, and medicament are mixed, the water body with medicament and bubbles is discharged through the L-shaped aeration pipe. At the same time, the second impeller rotates, driving the water body with bubbles and medicament to spiral upward, thereby increasing the range of the water body in the river that can come into contact with the bubbles and medicament, and increasing the river restoration efficiency. When adjusting the depth of the second support frame through the lifting device, the second support frame drives the piston rod to move relative to the piston sleeve rod, and the piston rod drives the piston block to move relative to the piston sleeve rod, thereby changing the compression degree of the gas in the piston sleeve rod and changing the amount of gas entering the limit sleeve rod. Thus, under the interaction with the first spring, it drives the limit slider to slide relative to the limit sleeve rod, the limit slider drives the limit rod to slide relative to the limit sleeve rod, and the limit sleeve rod drives the arc-shaped strip to slide, changing the size of the circle formed by the arc-shaped strips, thereby changing the size of the speed change mechanism, changing the transmission ratio between the driving device and the speed change mechanism, changing the rotation speeds of the first impeller and the second impeller, changing the negative pressure generated inside the cylindrical negative pressure shell, changing the diffusion range of the bubbles and medicament driven by the second impeller, and thus changing the aeration volume and aeration range.

[0006] Preferably, the lifting device includes scissor lifts arranged between the left and right ends of the first support frame and the left and right ends of the second support frame, and air cylinders arranged on both sides of the lower end inside the first support frame for driving the corresponding scissor lifts.

[0007] Preferably, the telescopic air guide pipe includes an air inlet pipe vertically arranged inside the first support frame, and an L-shaped air guide pipe arranged at the upper end of the second support frame, which is slidably connected to the air inlet pipe and communicates with each L-shaped aeration pipe.

[0008] Preferably, the transmission device includes a first toothed belt pulley arranged at the upper end of each first rotating shaft and passing through the corresponding cylindrical negative pressure housing, a second toothed belt pulley arranged at the lower end of each second impeller and rotatably communicating with the corresponding cylindrical negative pressure housing, a toothed transmission belt arranged between the first toothed belt pulley and the second toothed belt pulley for transmission, and a driving toothed belt pulley arranged at the lower end outside the piston rod and meshing with the toothed transmission belt. The gear transmission belt meshes with each first toothed belt pulley, and the toothed transmission belt meshes with each second toothed belt pulley.

[0009] Preferably, the stirring device includes a vertically arranged stirring shaft rotatably connected inside the chemical addition tank, and a plurality of horizontally arranged stirring rods arranged at equal intervals outside the stirring shaft.

[0010] Preferably, the driving device includes a first pulley rotatably connected inside the first support frame near the speed change mechanism, a first transmission belt arranged between the first pulley and the speed change mechanism for transmission, a motor installed inside the first support frame for driving the first pulley to rotate, a second rotating shaft vertically arranged at the lower end of the first pulley and passing through and rotatably connected to the first support frame, a second pulley arranged at one end of the second rotating shaft passing through the first support frame, a third pulley arranged at the lower end of the stirring device passing through the chemical addition tank and passing through the first support frame, and a second transmission belt arranged between the second pulley and the third pulley for transmission.

[0011] Preferably, a support slide rod is horizontally arranged near the first transmission belt at the lower end of the first support frame. Limiting chutes are provided at both the front and rear ends outside the support slide rod. Limiting sleeves slidably connected to the corresponding limiting chutes are slidably connected to both the front and rear ends outside the support slide rod. A limiting block slidably connected to the corresponding limiting chute is provided inside each limiting sleeve. A second spring is arranged between each limiting sleeve and the first support frame outside the support slide rod. A limiting pulley slidably connected to the first transmission belt is rotatably connected to the upper end of each limiting sleeve.

[0012] Preferably, a control console is arranged at one end of the first support frame, and a storage battery for connecting a power supply to provide power is arranged at one end of the control console.

[0013] Compared with the prior art, the present invention has the following beneficial effects: First, it can conveniently adjust the aeration volume and aeration range according to the depth of the river channel, improve the river channel restoration effect. Through the scissor lift, it can drive the second support frame to move, adjust the position of the second support frame according to the river channel depth, and at the same time drive the piston rod to slide relative to the piston sleeve rod. The piston rod drives the piston block to slide relative to the piston sleeve rod, changing the amount of gas entering the limit sleeve rod in the piston sleeve rod. Under the combined action with the first spring, it drives the limit slider to move relative to the limit sleeve rod, thereby changing the size of the circle formed by the arc-shaped strips, changing the transmission ratio with the first pulley, and further changing the rotation speed when driving the speed change mechanism to rotate, thus changing the rotation speeds of the first impeller and the second impeller. When the rotation speed of the first impeller changes, the negative pressure generated in the cylindrical negative pressure shell changes, and the aeration volume changes. When the rotation speed of the second impeller changes, the range of the water body with bubbles rising in a spiral manner changes, so as to conveniently adjust the aeration volume and aeration range according to the depth of the water body; Second, it can conveniently add medicaments to the water body to improve the restoration effect. Through the stirring device, it can conveniently stir the medicaments in the medicine adding tank, prevent precipitation of the medicaments in the medicine adding tank, and at the same time fully dissolve the medicaments. When the first impeller rotates, a negative pressure is formed in the cylindrical negative pressure shell. Through the medicine guiding pipe, the liquid medicine in the medicine adding tank can be extracted, mixed with the water body in the cylindrical negative pressure cavity, and at the same time change the rotation speed of the first impeller. When the negative pressure of the cylindrical negative pressure shell changes, the extraction amount of the liquid medicine changes accordingly, facilitating the adjustment of the medicine adding amount according to the water body depth. Brief Description of the Drawings

[0014] Figure 1 is the overall structure schematic diagram of the present invention; Figure 2 is a partial cross-sectional view of the present invention; Figure 3 shows the transmission device of the present invention; Figure 4 shows the connection relationship of the L-shaped water inlet pipe, cylindrical negative pressure shell, L-shaped aeration pipe, L-shaped air guide pipe, and medicine guiding pipe of the present invention; Figure 5 shows the relationship between the limit sliding groove and the limit clamping block of the present invention; Figure 6 shows the speed change mechanism of the present invention.

[0015] In the figure: 1. First support frame; 2. Scissor lift; 3. Second support frame; 4. Cylinder; 5. Cylindrical negative pressure shell; 6. First impeller; 7. First rotating shaft; 8. First toothed belt pulley; 9. L-shaped water inlet pipe; 10. L-shaped aeration pipe; 11. Second impeller; 12. Second toothed belt pulley; 13. Gear transmission belt; 14. L-shaped air guide pipe; 15. Air inlet pipe; 16. Piston sleeve rod; 17. Limit strip; 18. Piston block; 19. Limit port; 20. Piston rod; 21. Driving toothed belt pulley; 22. Limit sleeve rod; 23. Limit sliding block; 24. Limit rod; 25. First spring; 26. Arc-shaped strip; 27. Motor; 28. First belt pulley; 29. First transmission belt; 30. Second rotating shaft; 31. Second belt pulley; 32. Chemical dosing tank; 33. Stirring shaft; 34. Stirring rod; 35. Third belt pulley; 36. Second transmission belt; 37. Medicine guiding pipe; 38. Support sliding rod; 39. Limit sliding groove; 40. Limit sliding sleeve; 41. Limit clamping block; 42. Second spring; 43. Limit belt pulley; 44. Control console; 45. Storage battery. Specific embodiments

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0018] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0019] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example, refer to Figures 1-6, A river ecological restoration device, including a first support frame 1. On the left and right sides of the lower end of the first support frame 1, there is a lifting device respectively. Between the lower ends of the two lifting devices, there is a second support frame 3. On the right end of the first support frame 1, there is a control console 44. At the rear end of the control console 44, there is a storage battery 45 for connecting to a power source to provide electricity.

[0021] The lifting device includes a scissor lift 2 arranged between the left and right sides of the lower end of the first support frame 1 and the left and right sides of the upper end of the second support frame 3. At the left and right ends of the lower part inside the first support frame 1, there is a cylinder 4 for driving the corresponding scissor lift 2, which can conveniently adjust the depth of the second support frame 3, so as to adjust the aeration depth according to the river depth.

[0022] At the rear side of the lower end of the second support frame 3, a number of cylindrical negative pressure shells 5 are arranged at equal intervals. In the middle of the upper end of each negative pressure cylinder, there is a vertically arranged first rotating shaft 7 rotatably connected. At the lower end of each first rotating shaft 7, there is a first impeller 6. At the lower end of each cylindrical negative pressure outer shell, there is an L-shaped water inlet pipe 9 connected. At the front end of the outside of each cylindrical negative pressure shell 5, there is an L-shaped aeration pipe 10 connected. At the upper end of the outside of each L-shaped aeration pipe 10, there is a second impeller 11 rotatably connected. Between the first support frame 1 and the second support frame, there is a telescopic air guide pipe connected to each L-shaped aeration pipe 10, including an air inlet pipe 15 vertically arranged on the right side inside the first support frame 1. In the middle of the upper end of the second support frame 3, there is an L-shaped air guide pipe 14 slidably connected to the air inlet pipe 15 and connected to each L-shaped aeration pipe 10.

[0023] On the left side of the lower end of the first support frame 1, there is a vertically arranged piston sleeve rod 16 rotatably connected. At the upper end of the piston sleeve rod 16, there is a speed change mechanism, including five horizontally arranged limiting sleeve rods 22 arranged at equal intervals and connected to the outside of the upper end of the piston sleeve rod 16. Inside each limiting sleeve rod 22, there is a limiting block slidably connected. At one end of each limiting block away from the limiting sleeve rod 22, there is a limiting rod 24 horizontally arranged and slidably connected to the corresponding limiting sleeve rod 22. Between the outside of each limiting rod 24 and the corresponding limiting block and the corresponding limiting sleeve rod 22, there is a first spring 25. At one end of each limiting rod 24 away from the corresponding piston sleeve, there is an arc-shaped strip 26 passing through the corresponding limiting sleeve rod 22, which can conveniently adjust the rotation speed according to the depth of the river.

[0024] A piston block 18 is slidably connected inside the piston sleeve rod 16. A piston rod 20 is vertically arranged at the lower end of the piston block 18. The piston rod 20 is slidably connected with the piston sleeve rod 16 and rotatably connected with the second support frame 3. A transmission device for driving the first impeller 6 to rotate is arranged between the piston rod 20 and the first rotating shaft 7. The transmission device includes a first toothed belt pulley 8 arranged at the upper end of each rotating shaft and passing through the corresponding cylindrical negative pressure shell 5 and the second support frame 3. A second toothed belt pulley 12 rotatably connected with the corresponding L-shaped aeration pipe 10 is arranged at the lower end of each first impeller 6. A toothed transmission belt is arranged between the first toothed belt pulley 8 and the second toothed belt pulley 12. The toothed transmission belt is meshed with each toothed belt pulley and also meshed with each second toothed belt pulley 1-. A driving toothed belt pulley 21 meshed with the toothed transmission belt is arranged at the lower end outside the piston rod 20.

[0025] A chemical dosing tank 32 is arranged at the upper end of the first support frame 1. A stirring device is rotatably connected inside the chemical dosing tank 32. The stirring device includes a vertically arranged stirring shaft 33 rotatably connected to the middle of the lower end inside the chemical dosing tank 32. A number of stirring rods 34 arranged at equal intervals are rotatably connected to the outside of the stirring shaft 33. A guiding medicine pipe 37 communicating with each L-shaped water inlet pipe 9 is connected to the lower end of the chemical dosing tank 3-. This can facilitate adding medicine to the water body.

[0026] A driving device for driving the speed change mechanism and the stirring device is arranged inside the first support frame 1. The driving device includes a first belt pulley 28 rotatably connected between the chemical dosing tank 32 and the speed change mechanism at the lower end inside the first support frame 1. A first transmission belt 29 for transmission is arranged between the first belt pulley 28 and the speed change mechanism. A motor 27 for driving the first belt pulley 28 to rotate is installed inside the first support frame 1. A support sliding rod 38 is horizontally arranged below the first transmission belt 29 at the lower end of the first support frame 1. A limiting sliding sleeve 40 is slidably connected to both the front and rear ends of the support sliding rod 38. A limiting sliding groove 39 is formed at both the front and rear ends outside the support sliding rod 38. A limiting clamping block 41 slidably connected to the corresponding limiting sliding groove 39 is arranged inside each limiting sliding groove 39. A second spring 42 is arranged between each limiting sliding sleeve 40 and the first support frame 1 on the outside of the support sliding rod 38. This can keep the first belt pulley 28 in a pulled state all the time and prevent slipping.

[0027] A second rotating shaft 30 vertically arranged at the lower end of the first belt pulley 28 passes through the first support frame 1 and is rotatably connected with it. A second belt pulley 31 is arranged at the lower end of the second rotating shaft 30 passing through the first support frame 1. A third belt pulley 35 is arranged at the lower end of the stirring shaft 33 passing through the chemical dosing tank 32 and the second support frame 3. A second transmission belt 36 for transmission is arranged between the second belt pulley 31 and the third belt pulley 35.

[0028] Usage method: During use, fix the support column to the first support frame 1 on the river embankments on both banks of the river channel, thereby fixing the first support frame 1 between the two banks. Provide power through the storage battery 45. The control console 44 controls the cylinder 4. The cylinder 4 drives the scissor lift 2 to rise and fall, and put the second support frame 3 into the river channel. Adjust the position of the second support frame 3 according to the depth of the river channel. After mixing the medicament, add it to the chemical dosing tank 32. Then start the motor 27. The motor 27 drives the first pulley 28 to rotate. The first pulley 28 drives the second rotating shaft 30 to rotate. The second rotating shaft 30 drives the second pulley 31 to rotate. The second pulley 31 drives the third pulley 35 to rotate through the second transmission belt 36. The third pulley 35 drives the stirring shaft 33 to rotate. The stirring shaft 33 drives the stirring rod 34 to rotate, stirring the medicament in the chemical dosing tank 32 to prevent it from precipitating. At the same time, the first pulley 28 drives the speed change mechanism to rotate through the first transmission belt 29. The speed change mechanism drives the piston sleeve to rotate. Due to the limiting effect of the limiting strip 17 and the limiting port 19, the piston sleeve rod 16 drives the piston block 18 to rotate. The piston block 18 drives the piston rod 20 to rotate. The piston rod 20 drives the driving toothed belt pulley 21 to rotate. The driving toothed belt pulley 21 drives the first toothed belt pulley 8 and the second toothed belt pulley 12 to rotate through the toothed transmission belt, thereby driving the first rotating shaft 7 and the second impeller 11 to rotate. The first rotating shaft 7 drives the first impeller 6 to rotate, generating negative pressure in the cylindrical negative pressure shell 5. Extract the water body through the L-shaped water inlet pipe 9. At the same time, the medicament in the chemical dosing tank 32 enters the cylindrical negative pressure shell 5 through the medicine guide pipe 37 and is mixed with the water body. The L-shaped air guide pipe 14 and the air inlet pipe 15 extract air. After the air, water body and medicament are mixed, the water body with medicament and bubbles is discharged through the L-shaped aeration pipe 10. At the same time, the second impeller 11 rotates, driving the water body with bubbles and medicament to spiral upward, thereby increasing the range of the water body in the river channel that can come into contact with the bubbles and medicament, and increasing the restoration efficiency of the river channel.

[0029] When adjusting the depth of the second support frame 3 through the lifting device, the second support frame 3 drives the piston rod 20 to move relative to the piston sleeve rod 16, and the piston rod 20 drives the piston block 18 to move relative to the piston sleeve rod 16, thereby changing the compression degree of the gas in the piston sleeve rod 16 and changing the amount of gas entering the limit sleeve rod 22. Thus, under the interaction with the first spring 25, it drives the limit slider 23 to slide relative to the limit sleeve rod 22, the limit slider 23 drives the limit rod 24 to slide relative to the limit sleeve rod 22, the limit sleeve rod 22 drives the arc-shaped strip 26 to slide, changing the size of the circle formed by the arc-shaped strip 26, thereby changing the size of the speed change mechanism, changing the transmission ratio between the first pulley 28 and the speed change mechanism, thereby changing the rotation speeds of the first impeller 6 and the second impeller 11, changing the negative pressure generated inside the cylindrical negative pressure shell 5, changing the diffusion range of the bubbles and the medicament driven by the second impeller 11, thereby changing the aeration volume and the aeration range. During the change of the speed change mechanism, the first transmission belt 29 drives the limit pulley 43 to move, the limit pulley 43 drives the limit fixing sleeve to slide relative to the support slide rod 38, driving the limit block 41 to slide relative to the limit chute 39, changing the compression amount of the second spring 42, so that the first transmission belt 29 can be kept in a tightened state to prevent slipping.

[0030] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. An ecological restoration device for a river channel, comprising a first support frame (1), characterized in that: The left and right ends of the first support frame (1) are both provided with lifting devices, and a second support frame (3) is provided between the ends of the two lifting devices away from the first support frame (1). A plurality of cylindrical negative pressure shells (5) are provided at equal intervals at the lower end of the second support frame (3), and the lower end of each cylindrical negative pressure shell (5) is connected to an L-shaped water inlet pipe (9). The interior of each cylindrical negative pressure shell (5) is rotatably connected to a first impeller (6), and the upper end of each first impeller (6) is vertically provided with a first rotating shaft (7) rotatably connected to the corresponding cylindrical negative pressure shell (5). The outer side of each cylindrical negative pressure shell (5) is connected to an L-shaped aeration pipe (10), and the upper end of the outer side of each L-shaped aeration pipe (10) is rotatably connected to a second impeller (11). A telescopic air guide pipe connected to each L-shaped aeration pipe (10) is provided between the first support frame (1) and the second support frame (3); The first support frame (1) is internally rotatably connected to a piston sleeve (16) arranged vertically, and the piston sleeve (16) is internally slidably connected to a piston block (18). A limit strip (17) is provided on the inner side of the piston sleeve (16), and a limit opening (19) is provided on the outer side of the piston block (18) and is slidably connected to the limit strip (17). A piston rod (20) is vertically provided at the lower end of the piston block (18) and is slidably connected to the piston sleeve (16) and rotatably connected to the second support frame (3). The piston sleeve The upper end of the (16) is provided with a speed change mechanism, a transmission device for driving the first impeller (6) to rotate is provided between the piston rod (20) and the first rotating shaft (7), a medicine adding box (32) is provided inside the first support frame (1), the internal rotation of the medicine adding box (32) is connected to a stirring device, the lower end of the medicine adding box (32) is connected to a medicine guide tube (37) connected to each L-shaped aeration pipe (10), and a driving device for driving the speed change mechanism and the stirring device is provided inside the first support frame (1); The speed change mechanism includes a plurality of horizontally arranged limit rods (22) connected to the upper end of the outer side of the piston sleeve (16), a limit slider (23) slidably connected inside each limit rod (22), a limit rod (24) horizontally arranged at one end of each limit slider (23) away from the piston sleeve (16) and slidably connected to the corresponding limit rod (22), a first spring (25) arranged on the outer side of each limit rod (24) between the corresponding limit slider (23) and the corresponding limit rod (22), and an arc-shaped strip (26) arranged at one end of each limit rod (24) away from the corresponding limit slider (23) and extending through the corresponding limit rod (22).

2. The river ecological restoration device according to claim 1, characterized in that: The lifting device comprises scissor-type lifting frames (2) arranged between the left and right ends of the first support frame (1) and the left and right ends of the second support frame (3), and cylinders (4) arranged on the left and right sides of the lower end inside the first support frame (1) for driving the corresponding scissor-type lifting frames (2).

3. An ecological restoration device for a river course according to claim 1, characterized in that: The telescopic air duct includes an air inlet pipe (15) vertically arranged inside the first support frame (1), and an L-shaped air duct (14) arranged at the upper end of the second support frame (3), which is slidably connected to the air inlet pipe (15) and communicates with each L-shaped aeration pipe (10).

4. The river ecological restoration device according to claim 1, characterized in that: The transmission device includes a first toothed belt pulley (8) provided at the upper end of each first rotating shaft (7) and passing through the corresponding cylindrical negative pressure housing (5), a second toothed belt pulley (12) provided at the lower end of each second impeller (11) and rotatably communicating with the corresponding cylindrical negative pressure housing (5), a toothed transmission belt (13) provided between the first toothed belt pulley (8) and the second toothed belt pulley (12) for transmission, and a driving toothed belt pulley (21) provided at the lower end outside the piston rod (20) and meshing with the toothed transmission belt. The toothed transmission belt (13) meshes with each first toothed belt pulley (8), and the toothed transmission belt (13) meshes with each second toothed belt pulley (12).

5. An ecological restoration device for a river course according to claim 1, characterized in that: The stirring device includes a stirring shaft (33) vertically arranged and rotatably connected inside the chemical addition tank (32), and a plurality of horizontally arranged stirring rods (34) equidistantly arranged outside the stirring shaft (33).

6. The river ecological restoration device according to claim 1, characterized in that: The driving device includes a first belt pulley (28) rotatably connected inside the first support frame (1) near the speed change mechanism, a first transmission belt (29) provided between the first belt pulley (28) and the speed change mechanism for transmission, a motor (27) installed inside the first support frame (1) for driving the first belt pulley (28) to rotate, a second rotating shaft (30) vertically arranged at the lower end of the first belt pulley (28) and passing through and rotatably connected to the first support frame (1), a second belt pulley (31) provided at one end of the second rotating shaft (30) passing through the first support frame (1), a third belt pulley (35) provided at the lower end of the stirring device and passing through the chemical addition tank (32) and the first support frame (1), and a second transmission belt (36) provided between the second belt pulley (31) and the third belt pulley (35) for transmission.

7. An ecological restoration device for a river channel according to claim 6, characterized in that: A support sliding rod (38) is horizontally arranged near the first transmission belt (29) at the lower end of the first support frame (1). Limiting sliding grooves (39) are provided at the front and rear ends outside the support sliding rod (38). Limiting sliding sleeves (40) slidably connected to the corresponding limiting sliding grooves (39) are slidably connected to the front and rear ends outside the support sliding rod (38). A limiting clamping block (41) slidably connected to the corresponding limiting sliding groove (39) is provided inside each limiting sliding sleeve (40). A second spring (42) is provided between each limiting sliding sleeve (40) and the first support frame (1) on the outside of the support sliding rod (38). A limiting belt pulley (43) rotatably connected to the upper end of each limiting sliding sleeve (40) and slidably connected to the first transmission belt (29) is provided.

8. The river ecological restoration device according to claim 1, characterized in that: One end of the first support frame (1) is provided with a control console (44), and one end of the control console (44) is provided with a storage battery (45) for connecting a power supply to provide power.

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