River sludge treatment device for hydraulic engineering

Abstract

The invention relates to the technical field of riverway sludge treatment in water conservancy projects, in particular to a riverway sludge treatment device for water conservancy projects, which comprises trolleys positioned on two sides of a riverway, the trolleys are provided with first recycling boxes, a sliding rail is mounted between the two first recycling boxes, and the sliding rail is slidably provided with a telescopic rod; the first recycling box is provided with a driving mechanism, the driving mechanism is used for driving the telescopic rod to slide in the length direction of the sliding rail, the bottom end of the telescopic rod is fixedly provided with a cutter suction pump, the cutter suction pump is connected with a first sludge discharging pipe, and the first sludge discharging pipe is used for discharging sludge to the first recycling box. The method has the effect of reducing safety accidents.

Description

Technical Field

[0001] The present application relates to the technical field of river channel silt treatment in water conservancy projects, and in particular to a river channel silt treatment device for water conservancy projects. Background Art

[0002] River silt treatment is an important task in water conservancy projects. With the acceleration of urbanization, river pollution is becoming increasingly serious. Silt accumulation not only affects the smooth flow of water, but may also cause floods.

[0003] At present, common solutions for river silt treatment mainly include the following: one is to use a suction pump to perform suction operations, and the suction pump transports the silt to the recovery box on the shore through a pipe; the other is to use a grab dredging machine to directly scoop the silt out of the water through the grab bucket and then transport it to the designated location.

[0004] Among the above methods, the cutter suction pump is one of the most commonly used dredging tools. The cutter suction pump is connected to a trolley through a mechanical arm. In actual operation, due to the limited sludge suction range of the cutter suction pump, it can usually only cover a part of the width of the river. Therefore, the trolley is required to drive the cutter suction pump from one end of the river to the other end, adjust the position of the cutter suction pump, and then move the trolley from one end of the river to the other end. This kind of repeated movement back and forth along the river requires the driver of the trolley to drive for a long time, and the driver is prone to fatigue, which may lead to safety accidents. Summary of the invention

[0005] In order to reduce the occurrence of safety accidents, the present application provides a river silt treatment device for water conservancy projects.

[0006] The present application provides a river silt treatment device for water conservancy projects, which adopts the following technical solution: A river silt treatment device for a water conservancy project comprises a trolley located on both sides of the river channel, the trolley being equipped with a first recovery box, a slide rail being installed between the two first recovery boxes, a telescopic rod being slidably installed on the slide rail, the first recovery box being equipped with a driving mechanism, the driving mechanism being used to drive the telescopic rod to slide along the length direction of the slide rail, a suction pump being fixedly installed on the bottom end of the telescopic rod, the suction pump being connected to a first mud discharge pipe, and the first mud discharge pipe being used to discharge silt into the first recovery box.

[0007] By adopting the above technical solution, the length of the telescopic rod is adjusted to allow the cutter suction pump to descend to the river bottom. Then the cutter suction pump is started, the cutter suction pump breaks up and extracts the sludge, and then sends the sludge into the first recovery box through the first mud discharge pipe. In the process of starting the cutter suction pump, the driving mechanism drives the telescopic rod to move along the width direction of the river channel, and the telescopic rod drives the cutter suction pump to move along the width direction of the river channel, thereby facilitating the cleaning of the sludge inside the river channel.

[0008] After the cutter suction pump cleans an area along the width of the river, the driver drives the car to move along the river for a while, allowing the cutter suction pump to move to another area for cleaning. The driver drives the car for a short distance each time, and then the driver can rest while the cutter suction pump is extracting silt, thereby delaying the driver's fatigue when driving the car, thereby reducing the occurrence of safety accidents.

[0009] Optionally, the driving mechanism includes a rotating rod, a connecting rod, a second recovery box, a winding disk and a traction rope, the rotating rod is rotatably installed on the first recovery box, the winding disk is fixedly sleeved on the rotating rod, and the traction rope is fixedly installed between the winding disk and the top of the telescopic rod, there are multiple connecting rods and second recovery boxes, and the connecting rods and second recovery boxes are arranged in a one-to-one correspondence, one end of the connecting rod is fixedly connected to the rod body of the rotating rod, and the other end of the connecting rod is fixedly connected to the side wall of the second recovery box, and multiple second recovery boxes are arranged around the rotating rod, and the first mud discharge pipe is used to discharge sludge to the second recovery box.

[0010] By adopting the above technical solution, the first mud discharge pipe sprays the sludge toward the second recovery box on a vehicle body, and the weight of the sludge drives the rotating rod to rotate. The rotating rod drives the winding traction rope, and the traction rope pulls the telescopic rod to slide along the slide rail. After the telescopic rod moves to the end of the slide rail, the first mud discharge is moved to the second recovery box on another trolley for spraying the sludge, so that the telescopic rod slides along the slide rail to the other end, thereby facilitating the telescopic rod to slide, and then facilitating the drive of the suction pump to move along the width direction of the river channel.

[0011] Optionally, the angle between the connecting rod and the side wall of the second recovery box is an acute angle.

[0012] By adopting the above technical solution, when the rotating rod drives the second recovery box to move to the lower part of the side close to the first mud discharge pipe, the second recovery box has already begun to dump the sludge into the first recovery box. Afterwards, when the rotating rod drives the second recovery box to move to the side away from the first mud discharge pipe, the sludge inside the second recovery box has already been dumped, thereby reducing the resistance to the rotation of the second recovery box driven by the rotating rod.

[0013] Optionally, support sleeves are rotatably sleeved on both ends of the rotating rod, and first slots for the support sleeves to enter are formed at both ends of the rotating rod, and a support rod is fixedly installed on the outer wall of the support sleeve, and clamping blocks are fixedly installed on both ends of the slide rail and the support rod, and a clamping groove for the top side of a first recycling box to enter is formed on the bottom side of the clamping block, and a second slot for the top side of the first recycling box to enter is formed on the top side of the clamping block.

[0014] By adopting the above technical solution, the clamp block is inserted into the top side of the first recycling box through the clamp groove, so that the slide rail and the support rod are conveniently installed on the first recycling box. The support sleeve is passed through by the rotating rod, so that the rotating rod can be rotated conveniently. The first clamping groove and the second clamping groove both play a limiting role, thereby reducing the sliding of the support sleeve along the rotating rod and the sliding of the clamp block on the top side of the first recycling box.

[0015] Optionally, elastic blocks are fixedly mounted on both inner side walls of the clamping groove, and the elastic blocks are pressed against the side walls of the first recycling box.

[0016] By adopting the above technical solution, when the two trolleys move along the length of the river, there may be deviations in the distance and direction of movement of the two trolleys. The elastic block is used to move the clamping block, thereby reducing the situation where the two trolleys pull the slide rail when there is a deviation in the movement of the two trolleys.

[0017] Optionally, the slide rail is fixedly installed with a first connecting pipe and a second connecting pipe, the first connecting pipe is vertically arranged, the second connecting pipe is horizontally arranged, one end of the first connecting pipe is fixedly connected to the pipe body of the second connecting pipe, the other end of the first connecting pipe is fixedly connected to an end of the first mud discharge pipe away from the suction pump, both ends of the second connecting pipe are fixedly connected with the second mud discharge pipe, and the end of the second mud discharge pipe away from the second connecting pipe is bent toward the second recovery box.

[0018] By adopting the above technical solution, the first mud discharge pipe is sent into the second mud discharge pipe through the first connecting pipe and the second connecting pipe, and then the sludge is discharged into the second recovery box through the second mud discharge pipe. After blocking one second mud discharge pipe, the other mud discharge pipe will spray sludge to the second recovery box on one side of the river channel. After blocking the other second mud discharge pipe, one mud discharge pipe will spray sludge to the second recovery box on the other side of the river channel, thereby facilitating the change of the sludge spraying position.

[0019] Optionally, two limiting rings are fixedly installed inside the second connecting tube, the connection between the first connecting tube and the second connecting tube is located between the two limiting rings, a baffle plate is arranged between the two limiting rings, and the baffle plate is installed with a switching mechanism, and the switching mechanism is used to drive the baffle plate to slide along the length direction of the second connecting tube.

[0020] By adopting the above technical solution, the switching mechanism drives the shielding plate to move, so that the shielding plate abuts against a limiting ring, thereby blocking one end of the second connecting pipe. The switching mechanism drives the shielding plate to move, so that the shielding plate abuts against another limiting ring, thereby blocking the other end of the second connecting pipe, thereby facilitating the change of the sludge spraying position.

[0021] Optionally, the drive switch includes a first drive rod, a second drive rod and a drive block, one end of the first drive rod is fixedly connected to the bottom side of the baffle plate, the other end of the first drive rod is fixedly connected to the rod body of the second drive rod, both ends of the second drive block slide through the tube wall of the first connecting tube, there are two drive blocks, and the drive blocks are fixedly installed on the end of the second drive rod. The drive blocks are located on the bottom side of the slide rail for extrusion of the telescopic rod.

[0022] By adopting the above technical solution, after the telescopic rod moves to one end of the slide rail, the telescopic rod is squeezed with the driving block at one end of the slide rail, thereby driving the driving block to move. The driving block drives the second driving rod to move, and the second driving rod drives the blocking plate to move through the first driving rod, so that the blocking plate is pressed against the limiting ring on the side where the telescopic rod is located, thereby blocking the second mud discharge pipe on the side where the telescopic rod is located.

[0023] After the second mud discharge pipe on the side of the telescopic rod is blocked, the mud is discharged into the second recovery box from the second mud discharge pipe away from the telescopic rod. Then the telescopic rod moves to the other end along the slide rod, and the telescopic rod squeezes the driving block at the other end of the slide rod, thereby changing the spraying position of the mud again.

[0024] Optionally, the shielding plate is tilted toward both sides of the trolley, and the limiting ring is tilted toward one side of the shielding plate for the shielding plate to fit.

[0025] By adopting the above technical solution, when the sludge flows from the first connecting pipe to the second connecting pipe, the sludge impacts the inclined side of the shielding plate, thereby facilitating the shielding plate to press the limiting ring.

[0026] Optionally, a partition is fixedly installed inside the first recovery box, and a first overflow port is opened on the top side of the partition. The partition divides the interior of the first recovery box into a sedimentation tank and a recovery tank. The first mud discharge pipe is used to discharge sludge to the recovery tank, and a second overflow port is opened on the side wall of the sedimentation tank facing the river channel.

[0027] By adopting the above technical solution, the water in the recovery tank enters the sedimentation tank from the first overflow port, and then the water inside the sedimentation tank is discharged back to the river channel from the second overflow port, thereby facilitating the discharge of the water extracted by the suction pump back to the river channel.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up the vehicle body on both sides of the river and equipping it with slide rails and telescopic rods, the cutter suction pump can slide freely on the slide rails, which significantly expands the operating range of the cutter suction pump and reduces the number of round trips of the vehicle, thereby delaying the driver's fatigue in driving the vehicle and reducing the occurrence of safety accidents; 2. The second row of mud pumps sprays sludge alternately to the second recovery boxes on both sides of the river channel, so that the rotating rod drives the reel to reel in the traction rope, thereby facilitating the telescopic rod to move along the slide rail, and the telescopic rod drives the cutter suction pump to move along the width direction of the river channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the river channel silt treatment device and the river channel in Example 1 of the present application; Figure 2 yes Figure 1 A magnified view at point A; Figure 3 is an exploded view between the rotating rod and the supporting sleeve of an embodiment of the present application; Figure 4 It is a partial structural schematic diagram of an embodiment of the present application; Figure 5 It is a structural schematic diagram of the first connecting pipe, the second connecting pipe and the switching mechanism in an embodiment of the present application.

[0030] Figure 6 yes Figure 5 Section view at AA.

[0031] Explanation of the reference numerals: 1. trolley; 2. first recovery box; 3. slide rail; 4. telescopic rod; 5. suction pump; 6. first mud discharge pipe; 7. second mud discharge pipe; 8. first connecting pipe; 9. second connecting pipe; 10. driving mechanism; 101. rotating rod; 102. connecting rod; 103. second recovery box; 104. winding drum; 105. traction rope; 11. supporting sleeve; 12. first slot; 13. second slot; 14. supporting rod; 15. clamping block; 16. clamping slot; 17. elastic block; 18. limiting ring; 19. shielding plate; 20. switching mechanism; 201. first driving rod; 202. second driving rod; 203. driving block; 21. partition; 22. first overflow port; 23. second overflow port. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-6 This application is described in further detail.

[0033] The embodiment of the present application discloses a river silt treatment device for water conservancy projects.

[0034] Reference Figure 1, a river silt treatment device for water conservancy projects, including a trolley 1 located on both sides of the river. In the embodiment of the present application, one trolley 1 is located on the left side, and the other trolley 1 is located on the right side. The trolley 1 is fixedly installed with a first recycling box 2, and a slide rail 3 is installed between the first recycling boxes 2 on the left and right sides. The slide rail 3 is slidably installed with a telescopic rod 4, and a suction pump 5 is fixedly installed at the bottom end of the telescopic rod 4. Adjust the length of the telescopic rod 4 to move the suction pump 5 to the bottom side of the river, so as to facilitate the suction pump 5 to extract silt.

[0035] Reference Figure 1 , Figure 2 , the cutter suction pump 5 is connected to the first mud discharge pipe 6, and the middle of the side wall of the slide rail 3 is fixedly installed with a first connecting pipe 8 and a second connecting pipe 9. The first connecting pipe 8 is arranged vertically, and the second connecting pipe 9 is arranged horizontally. One end of the first connecting pipe 8 is fixedly connected to the middle of the pipe body of the second connecting pipe 9, and the other end of the first connecting pipe 8 is fixedly connected to the end of the first mud discharge pipe 6 away from the cutter suction pump 5. Both ends of the second connecting pipe 9 are fixedly connected to the second mud discharge pipe 7.

[0036] The sludge extracted by the cutter suction pump 5 enters the first sludge discharge pipe 6, and then the sludge inside the first sludge discharge pipe 6 enters the second sludge discharge pipe 7 through the first connecting pipe 8 and the second connecting pipe 9. The sludge is then discharged from the second sludge discharge pipe 7 to the inside of the first recovery box 2, thereby facilitating the recovery of the sludge.

[0037] Reference Figure 2 , Figure 3 , the first recycling box 2 is equipped with a driving mechanism 10, including a rotating rod 101. Support sleeves 11 are rotatably sleeved at both ends of the rotating rod 101, and first clamping grooves 12 for the support sleeve 11 to enter are provided at both ends of the rotating rod 101, and the first clamping grooves 12 are used to limit the support sleeve 11 from sliding along the length direction of the rotating rod 101. A support rod 14 is fixedly installed on the outer wall of the support sleeve 11, and a clamping block 15 is fixedly installed at both ends of the slide rail 3 and the support rod 14. A clamping groove 16 is provided on the bottom side of the clamping block 15 for the top side of the first recycling box 2 to enter, and a second clamping groove 13 is provided on the top side of the first recycling box 2 for the top side of the clamping block 15 to enter. The clamping block 15 is clamped on the top side of the first recycling box 2 through the clamping groove 16, so as to facilitate the installation of the slide rail 3 and the support rod 14 on the first recycling box 2. The second clamping groove 13 is used to limit the clamping block 15, so as to reduce the occurrence of the clamping block 15 sliding on the top side of the first recycling box 2.

[0038] Both inner side walls of the clamping groove 16 are fixedly mounted with elastic blocks 17, which are pressed against the side walls of the first recycling box 2. The two trolleys 1 move synchronously on both sides of the river channel. There may be deviations in the moving speed and direction of the two trolleys 1. The elastic blocks 17 are compressed and contracted to avoid the deviation, thereby reducing the situation where the two trolleys 1 pull the slide rail 3. In another embodiment, the two trolleys 1 can be linked by a control system, so that after a driver drives a trolley 1, the control system controls the other trolley 1 to follow and move, thereby reducing the deviation of the movement of the two trolleys 1.

[0039] Reference Figure 3 , Figure 4 The driving mechanism 10 also includes a connecting rod 102, a second recovery box 103, a winding disc 104 and a traction rope 105. The winding disc 104 is fixedly sleeved on the rotating rod 101, and the traction rope 105 is fixedly installed between the winding disc 104 and the top of the telescopic rod 4. There are multiple connecting rods 102 and multiple second recovery boxes 103, and the connecting rods 102 and the second recovery boxes 103 are arranged one by one. One end of the connecting rod 102 is fixedly connected to the rod body of the rotating rod 101, and the other end of the connecting rod 102 is fixedly connected to the side wall of the second recovery box 103. Multiple second recovery boxes 103 are arranged around the rotating rod 101, and the angle between the connecting rod 102 and the side wall of the second recovery box 103 is an acute angle. The sludge discharged from the second mud discharge pipe 7 to the first recovery box 2 first falls into the second recovery box 103, and then as the rotating rod 101 rotates, the sludge falls from the second recovery box 103 into the inside of the first recovery box 2.

[0040] In another embodiment, the driving mechanism 10 is a winch that reels in and out to drive the telescopic rod 4 to move.

[0041] After the second mud discharge pipe 7 on the left is blocked, the mud is sprayed from the second mud discharge pipe 7 on the right into the second recovery box 103. The second recovery box 103 on the right drives the rotating rod 101 to rotate under the action of gravity, and the rotating rod 101 drives the winding disk 104 to wind up the traction rope 105, so that the telescopic rod 4 drives the suction pump 5 to move to the right.

[0042] After the telescopic rod 4 moves to the right end of the slide rail 3, the second mud discharge pipe 7 on the left is opened, and the mud discharge pipe on the right is blocked, and the sludge is sprayed from the second mud discharge pipe 7 on the left to the inside of the second recovery box 103. Then the rotating rod 101 on the left drives the winding disk 104 to wind up the traction rope 105, so that the telescopic rod 4 drives the cutter suction pump 5 to move to the left. By alternately blocking the two second mud discharge pipes 7, it is convenient to control the cutter suction pump 5 to move back and forth along the width direction of the river channel.

[0043] Reference Figure 1 , Figure 5 , Figure 6Two limiting rings 18 are fixedly installed inside the second connecting pipe 9, and the connection between the first connecting pipe 8 and the second connecting pipe 9 is located between the two limiting rings 18. A shielding plate 19 is arranged between the two limiting rings 18, and a switching mechanism 20 is installed on the shielding plate 19.

[0044] The switching mechanism 20 includes a first driving rod 201, a second driving rod 202 and a driving block 203. One end of the first driving rod 201 is fixedly connected to the bottom side of the shielding plate 19, and the other end of the first driving rod 201 is fixedly connected to the rod body of the second driving rod 202. Both ends of the second driving block 203 slide through the tube wall of the first connecting tube 8, and there are two driving blocks 203, which are fixedly installed at the ends of the second driving rod 202. The driving block 203 is located at the bottom side of the slide rail 3 for the telescopic rod 4 to squeeze.

[0045] When the telescopic rod 4 moves to the right end of the slide rail 3, the telescopic rod 4 squeezes the driving block 203 on the right side, and the driving block 203 drives the baffle plate 19 to squeeze the limiting ring 18 on the right side through the first driving rod 201 and the second driving rod 202, thereby facilitating the blocking of the second mud discharge pipe 7 on the right side.

[0046] When the telescopic rod 4 moves to the left end of the slide rail 3, the telescopic rod 4 squeezes the driving block 203 on the left, and the driving block 203 drives the baffle plate 19 to squeeze the limiting ring 18 on the left through the first driving rod 201 and the second driving rod 202, thereby facilitating the blocking of the second mud discharge pipe 7 on the left.

[0047] The shielding plate 19 is tilted toward both sides of the trolley 1, and the limiting ring 18 is tilted near the shielding plate 19 for the shielding plate 19 to fit. When the sludge enters the second connecting pipe 9 from the first connecting pipe 8, the sludge impacts the tilted side of the blocking plate, thereby facilitating the blocking plate to press the limiting ring 18.

[0048] Reference Figure 4 A partition 21 is fixedly installed inside the first recovery box 2, and a first overflow port 22 is opened on the top side of the partition 21. The partition 21 divides the inside of the first recovery box 2 into a sedimentation tank and a recovery tank. The second recovery box 103 is located inside the recovery tank, and a second overflow port 23 is opened on the side wall of the sedimentation tank facing the river channel.

[0049] When the cutter suction pump 5 extracts the sludge, the water in the river channel is also extracted. After the water inside the first recovery box 2 flows from the first overflow port 22 to the sedimentation tank for sedimentation, the water is discharged back to the river channel from the second overflow port 23, thereby reducing the water content of the sludge inside the first recovery box 2.

[0050] The implementation principle of a river channel silt treatment device for a water conservancy project in an embodiment of the present application is as follows: the driving mechanism 10 drives the telescopic rod 4 to move along the width direction of the river channel, thereby causing the suction pump 5 to move along the width direction of the river channel. The suction pump 5 moves along the width direction of the river channel, so that it is convenient for the driver to drive the car 1 from one end of the river channel to the other end. The suction pump 5 can cover the entire river channel, thereby reducing the number of times the driver drives the car 1 back and forth along the river channel. At the same time, after the driver drives the car 1 to move a certain distance, he needs to stop and wait for the suction pump 5 to work. The driver can rest while the suction pump 5 is working, thereby reducing the driver's driving fatigue and thus reducing the occurrence of safety accidents.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A river silt treatment device for water conservancy projects, characterized in that: The invention comprises a trolley (1) located on both sides of a river channel, wherein the trolley (1) is provided with a first recovery box (2), a slide rail (3) is provided between the two first recovery boxes (2), a telescopic rod (4) is slidably provided on the slide rail (3), the first recovery box (2) is provided with a driving mechanism (10), the driving mechanism (10) is used to drive the telescopic rod (4) to slide along the length direction of the slide rail (3), a suction pump (5) is fixedly provided at the bottom end of the telescopic rod (4), the suction pump (5) is connected with a first mud discharge pipe (6), and the first mud discharge pipe (6) is used to discharge mud into the first recovery box (2).

2. A river silt treatment device for water conservancy projects according to claim 1, characterized in that: The driving mechanism (10) comprises a rotating rod (101), a connecting rod (102), a second recovery box (103), a winding drum (104) and a traction rope (105); the rotating rod (101) is rotatably mounted on the first recovery box (2); the winding drum (104) is fixedly sleeved on the rotating rod (101); the traction rope (105) is fixedly mounted between the winding drum (104) and the top end of the telescopic rod (4); there are a plurality of connecting rods (102) and a plurality of second recovery boxes (103); the connecting rods (102) and the second recovery boxes (103) are arranged in a one-to-one correspondence; one end of the connecting rod (102) is fixedly connected to the rod body of the rotating rod (101); the other end of the connecting rod (102) is fixedly connected to the side wall of the second recovery box (103); a plurality of the second recovery boxes (103) are arranged around the rotating rod (101); and the first mud discharge pipe (6) is used to discharge mud into the second recovery box (103).

3. A river silt treatment device for water conservancy projects according to claim 2, characterized in that: The angle between the connecting rod (102) and the side wall of the second recovery box (103) is an acute angle.

4. A river silt treatment device for water conservancy projects according to claim 2, characterized in that: Support sleeves (11) are rotatably sleeved on both ends of the rotating rod (101), first clamping grooves (12) for the support sleeves (11) to enter are formed on both ends of the rotating rod (101), a support rod (14) is fixedly mounted on the outer wall of the support sleeve (11), a clamping block (15) is fixedly mounted on both ends of the slide rail (3) and the support rod (14), a clamping groove (16) is formed on the bottom side of the clamping block (15) for the top side of the first recovery box (2) to enter is formed, and a second clamping groove (13) is formed on the top side of the first recovery box (2) for the top side of the clamping block (15) to enter is formed.

5. A river silt treatment device for water conservancy projects according to claim 4, characterized in that: Elastic blocks (17) are fixedly mounted on both inner side walls of the clamping groove (16), and the elastic blocks (17) are in contact with the side walls of the first recovery box (2).

6. A river silt treatment device for water conservancy projects according to claim 2, characterized in that: The slide rail (3) is fixedly mounted with a first connecting pipe (8) and a second connecting pipe (9); the first connecting pipe (8) is arranged vertically, and the second connecting pipe (9) is arranged horizontally; one end of the first connecting pipe (8) is fixedly connected to the pipe body of the second connecting pipe (9); the other end of the first connecting pipe (8) is fixedly connected to an end of the first mud discharge pipe (6) away from the suction pump (5); both ends of the second mud discharge pipe (9) are fixedly connected to the second mud discharge pipe (7); and the end of the second mud discharge pipe (7) away from the second connecting pipe (9) is bent and arranged toward the second recovery box (103).

7. A river silt treatment device for water conservancy projects according to claim 6, characterized in that: Two limiting rings (18) are fixedly installed inside the second connecting tube (9); the connection between the first connecting tube (8) and the second connecting tube (9) is located between the two limiting rings (18); a shielding plate (19) is arranged between the two limiting rings (18); the shielding plate (19) is installed with a switching mechanism (20); the switching mechanism (20) is used to drive the shielding plate (19) to slide along the length direction of the second connecting tube (9).

8. A river silt treatment device for water conservancy projects according to claim 7, characterized in that: The switching mechanism (20) comprises a first driving rod (201), a second driving rod (202) and a driving block (203); one end of the first driving rod (201) is fixedly connected to the bottom side of the baffle plate (19); the other end of the first driving rod (201) is fixedly connected to the rod body of the second driving rod (202); both ends of the second driving block (203) slide through the tube wall of the first connecting tube (8); there are two driving blocks (203); the driving blocks (203) are fixedly mounted on the ends of the second driving rod (202); and the driving blocks (203) are located on the bottom side of the slide rail (3) for the telescopic rod (4) to squeeze.

9. A river silt treatment device for water conservancy projects according to claim 7, characterized in that: The shielding plate (19) is tilted towards both sides of the trolley (1), and the limiting ring (18) is tilted on one side close to the shielding plate (19) so that the shielding plate (19) fits closely.

10. The river silt treatment device for water conservancy engineering according to claim 1, characterized in that: A partition (21) is fixedly installed inside the first recovery box (2), and a first overflow port (22) is provided on the top side of the partition (21). The partition (21) divides the inside of the first recovery box (2) into a sedimentation tank and a recovery tank. The first mud discharge pipe (6) is used to discharge mud to the recovery tank. A second overflow port (23) is provided on the side wall of the sedimentation tank facing the river channel.

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