River dredging device for water conservancy harnessing project and use method

Abstract

The application belongs to the technical field of cleaning silt, and particularly relates to a river dredging device for water conservancy treatment engineering and a use method thereof, which comprises a digging bucket, one side of the digging bucket is fixedly connected with a mounting head, an opening is arranged on the side of the digging bucket away from the mounting head, the top surface of the digging bucket is fixedly connected with a connecting pipe, and the bottom end of the connecting pipe extends into the digging bucket. The silt in the river is dug out by means of the excavator controlling the digging bucket. After the silt enters the digging bucket, the motor drives the gear to rotate, the gear drives the first sealing plate to move downwards, so that the port of the digging bucket is sealed. At this time, the silt in the digging bucket cannot flow out, so that the number of times of digging silt is reduced. Meanwhile, the silt in the digging bucket is directly sucked to the top of the dump truck through the silt suction pump through the connecting pipe, so that the silt is quickly loaded into the dump truck, and the efficiency of river dredging is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of silt removal technology, specifically a river dredging device and its usage method for water conservancy projects. Background Technology

[0002] Some existing dikes and structures have been in disrepair for years, the river channels are silted up, the dikes have subsided, and the flood discharge capacity has been reduced, which can not meet the design and verification flood discharge capacity requirements determined by the "Haihe River Basin Flood Control Plan". In order to improve the flood discharge capacity of the river channels and improve the flood control system of the basin, it is necessary to dredge the river channels. The dredging of the river channels is carried out by using long-arm excavators to excavate, and the silt is dug into dump trucks and transported to the borrow pit.

[0003] However, the above-mentioned technologies often have the following drawbacks: When the excavator bucket digs out silt, some silt will flow out of the bucket, requiring it to be dug out again. At the same time, after the silt is dug into the bucket, the bucket needs to be moved above the dump truck before the silt is poured into the dump truck. This process requires the silt in the bucket to be transferred, which reduces the efficiency of silt dredging. Therefore, the present invention provides a river dredging device and method for water conservancy projects. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A river dredging device for water conservancy projects, comprising a bucket; an installation head is fixedly connected to one side of the bucket; an opening is provided on the side of the bucket away from the installation head; a connecting pipe is fixedly connected to the top surface of the bucket; the bottom end of the connecting pipe extends into the bucket; a first sealing plate is slidably connected to the top surface of the bucket near the opening end; a set of drive grooves is provided on the side of the first sealing plate near the connecting pipe; a motor is fixedly connected to the top surface of the bucket via a bracket; and a gear meshing with the drive grooves is fixedly connected to the output end of the motor. In the prior art, when an excavator bucket dredges silt, silt flows out of the bucket. After the silt is dredged into the bucket, it is necessary to move the bucket above a dump truck before dumping the silt into the truck. This process requires cleaning the silt in the bucket. The previous method of transferring silt resulted in reduced efficiency in dredging. This invention addresses this by installing a bucket on the excavator's arm and connecting a pipe to a suction pump. The output end of the pipe connected to the suction pump is positioned above a dump truck. The excavator can then control the bucket to dredge the silt in the riverbed. Once the silt enters the bucket, a motor drives a gear to rotate, causing the gear to move the first sealing plate downwards, sealing the bucket's opening. This prevents the silt from flowing out, reducing the need for repeated dredging. Simultaneously, the suction pump draws the silt directly from the bucket to the top of the dump truck through the connecting pipe, quickly loading the silt into the truck and significantly improving river dredging efficiency. After the silt in the bucket is drained, the gear drives the first sealing plate to slide upwards, allowing the bucket to continue dredging.

[0006] Preferably, the bucket has an installation groove on the side near the mounting head, and a first filter screen is fixedly connected in the installation groove. A pair of connecting plates are fixedly connected on the side of the bucket near the first filter screen. A second sealing plate that seals the installation groove is connected between the connecting plates by a torsion spring. A drive mechanism that drives the second sealing plate to rotate is provided inside the bucket. Since the silt contains a lot of stones, some of the larger stones may block the river channel and affect the smooth flow of water. At this time, the above mechanism can be used to allow the second sealing plate to stop sealing the installation groove after the bucket has been working for a period of time (the opening of the bucket should not be tilted downward as much as possible during operation, so that the stones remain in the bucket). Then, the bucket opening is tilted upward with the help of the excavator arm. At this time, the smaller stones will pass through the mesh of the first filter screen and fall directly, while the larger stones remain in the bucket. Afterwards, the stones in the bucket can be poured into a designated transport vehicle with the help of the excavator arm, thereby further improving the dredging effect of the river channel.

[0007] Preferably, the driving mechanism includes a hollow elastic block fixed to the top surface of the inner wall of the bucket. A hollow cylinder is fixedly connected to the inner wall of the bucket near the mounting groove. A push rod is slidably connected to the cylinder near the second sealing plate. A return spring (not shown in the figure) is fixedly connected between the push rod away from the second sealing plate and the inner wall of the cylinder. The push rod passes through the side wall of the bucket. A conduit connects the elastic block and the cylinder. A pressure plate aligned with the elastic block is fixedly connected to the first sealing plate near the connecting pipe. When the second sealing plate needs to be opened, the first sealing plate is moved upward by a motor-driven gear until it reaches the point where the pressure plate squeezes the elastic block. At this time, the gas in the elastic block enters the cylinder through the conduit and pushes the push rod, causing the push rod to rotate and open the second sealing plate. At this time, the stones in the bucket can be discharged normally. The above mechanism achieves the effect of automatically opening the second sealing plate.

[0008] Preferably, multiple sets of unclogging rods are fixedly connected to the side of the second sealing plate near the mounting groove, and the unclogging rods correspond to the mesh of the first filter screen. Since the shape of the stones is not fixed, some stones are easily stuck in the mesh of the first filter screen and are difficult to fall off. The above mechanism can control the up and down movement of the first sealing plate, so that the elastic block is squeezed back and forth. At this time, the top rod will repeatedly push the second sealing plate, causing the second sealing plate to swing. At this time, the unclogging rod can impact the stones stuck in the mesh of the first filter screen, thereby knocking the stones off, thus achieving the effect of unclogging the first filter screen.

[0009] Preferably, an adjusting pipe is slidably connected to the bottom end of the connecting pipe, and a connecting line is fixedly connected to the surface of the adjusting pipe. The other end of the connecting line is fixedly connected to the first sealing plate. Since stones can easily impact the connecting pipe when sliding out of the bucket, potentially damaging it, the first sealing plate can be raised during stone discharge. This pulls the connecting line, causing it to move the adjusting pipe upwards, creating a large gap between the adjusting pipe and the bottom of the bucket's inner wall, allowing stones to pass through. When sludge needs to be removed from the bucket, the first sealing plate seals the bucket. The adjusting pipe then moves downwards to its lowest point due to gravity, but a gap remains between it and the bottom of the bucket. The sludge can then pass through the adjusting pipe and connecting pipe and be sucked away by the sludge pump. This mechanism protects the connecting pipe and extends its service life.

[0010] Preferably, a circular sleeve is fixedly connected to the bottom end of the regulating pipe, and a second filter screen (not shown in the figure) is fixedly connected to the inner wall of the circular sleeve. Since the regulating pipe easily sucks up impurities such as stones and branches mixed in the sludge when it is suctioning sludge, these impurities can easily damage the inner wall of the pipe and also cause sludge suction pump failure. At this time, the second filter screen can filter out impurities such as branches and stones in the sludge, thereby achieving the effect of protecting the pipe and sludge suction pump.

[0011] Preferably, a rotating ring is rotatably connected to the surface of the circular sleeve, and a U-shaped cleaning plate is fixedly connected to the side wall of the rotating ring. The bottom surface of the cleaning plate is located below the regulating pipe, and a spiral blade is fixedly connected to the top surface of the rotating ring. A round rod for pushing the spiral blade is fixedly connected to the side wall of the connecting pipe through a bracket. Since the branches filtered by the second filter screen can easily get tangled on the regulating pipe, thus affecting the sludge suction effect of the regulating pipe, the round rod can be used to push the spiral blade when the regulating pipe moves upward with the first sealing plate. This causes the spiral blade to rotate the rotating ring, and the cleaning plate will sweep away the branches tangled at the bottom of the regulating pipe, so that the branches no longer affect the use of the regulating pipe, thereby improving the sludge suction effect of the regulating pipe.

[0012] Preferably, the bottom surface of the first sealing plate is provided with a set of sliding grooves, and a push rod is slidably connected to the inner wall of the sliding grooves. A drive spring is fixedly connected between the top surface of the push rod and the top surface of the inner wall of the sliding grooves, and the bottom end of the push rod is domed. Since there may be stones below the first sealing plate when the first sealing plate moves downward to seal the bucket, the stones will hinder the closing of the first sealing plate. With the above mechanism, during the process of the first sealing plate moving downward to close, the domed end of the push rod can push the stones located below the first sealing plate, so that the stones are pushed away from under the first sealing plate by the push rod. At this time, the first sealing plate can close normally, achieving the effect of allowing the first sealing plate to close normally.

[0013] Preferably, the bottom surface of the inner wall of the bucket is fixedly connected to an elastic hollow block aligned with the first sealing plate, and the top surface of the hollow block is arc-shaped. Since the shape of the stone is not fixed, some stones may have multiple sides in contact with the bottom surface of the inner wall of the bucket. It is difficult to push such stones with a push rod. In this case, the arc-shaped surface of the hollow block can be used to guide the stone, so that the stone does not remain under the first sealing plate as much as possible. If a stone remains on the hollow block, it can also be pushed with a push rod. At this time, the hollow block will be deformed by the squeezing force, causing the position of the stone to shift, thereby pushing the stone away from under the first sealing plate, improving the effect of pushing and cleaning the stones under the first sealing plate.

[0014] A method for using a river dredging device in a water conservancy project, the method comprising the following steps:

[0015] S1: By installing the bucket onto the excavator's boom, and then connecting the pipe connected to the sludge suction pump to the connecting pipe, the output end of the pipe connected to the sludge suction pump is located above the dump truck.

[0016] S2: Using an excavator to control the bucket to remove silt from the river channel, after the silt enters the bucket, the motor drives the gear to rotate, causing the gear to move the first sealing plate downward to seal the end of the bucket.

[0017] S3: The sludge suction pump allows the sludge in the bucket to be directly sucked from the connecting pipe to the top of the dump truck. After the dump truck is full of sludge, it is used to transport the sludge to the spoil disposal site.

[0018] The above method can be used to quickly remove silt with the help of the bucket 1, thereby improving the dredging efficiency of the river.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. This invention utilizes an excavator to control the bucket to remove silt from riverbeds. After the silt enters the bucket, a motor drives a gear to rotate, causing the gear to move the first sealing plate downwards, thus sealing the bucket's port. This prevents the silt from flowing out, reducing the need for repeated silt removal. Simultaneously, a silt suction pump draws the silt from the bucket directly onto a dump truck via a connecting pipe, quickly loading the silt into the truck and significantly improving the efficiency of river dredging.

[0021] 2. This invention uses a drive mechanism to drive the second sealing plate to stop sealing the mounting groove, and then uses the excavator arm to tilt the opening end of the bucket upward. At this time, smaller stones will pass through the mesh of the first filter screen and fall directly, while larger stones remain in the bucket. Afterward, the excavator arm can be used to pour the stones in the bucket into a designated transport vehicle, thereby further improving the effect of river dredging. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 yes Figure 1 Side view;

[0025] Figure 3 This is a schematic diagram of the internal structure of the bucket in this invention;

[0026] Figure 4 yes Figure 3 Enlarged view of point A;

[0027] Figure 5 yes Figure 3 Enlarged view of point B;

[0028] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0029] Figure 7 This is a flowchart of the method of the present invention.

[0030] In the diagram: 1. Bucket; 2. Connecting pipe; 3. Motor; 4. Gear; 5. First sealing plate; 6. Drive groove; 7. Mounting head; 8. Mounting groove; 9. First filter screen; 10. Second sealing plate; 11. Connecting plate; 12. Elastic block; 13. Pressure plate; 14. Guide tube; 15. Cylinder; 16. Top rod; 17. Unblocking rod; 18. Adjusting pipe; 19. Connecting line; 20. Circular sleeve; 21. Rotary ring; 22. Spiral blade; 23. Cleaning plate; 24. Round rod; 25. Push rod; 26. Drive spring; 27. Hollow block. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] Example 1: As Figures 1 to 5 As shown in the figure, a river dredging device for water conservancy management engineering according to an embodiment of the present invention includes a bucket 1; an installation head 7 is fixedly connected to one side of the bucket 1, the bucket 1 has an opening on the side away from the installation head 7, a connecting pipe 2 is fixedly connected to the top surface of the bucket 1, the bottom end of the connecting pipe 2 extends into the bucket 1, a first sealing plate 5 is slidably connected to the top surface of the bucket 1 near the opening end, a set of drive grooves 6 are opened on the side of the first sealing plate 5 near the connecting pipe 2, a motor 3 is fixedly connected to the top surface of the bucket 1 through a bracket, and a gear 4 that meshes with the drive grooves 6 is fixedly connected to the output end of the motor 3;

[0033] In the current technology, when the excavator bucket 1 is dredging silt, some silt will flow out from the bucket 1. At the same time, after the silt is dredged into the bucket 1, it is necessary to move the bucket 1 above the dump truck and then dump the silt into the dump truck. This process requires the silt in the bucket 1 to be transferred, which reduces the efficiency of dredging silt.

[0034] This invention involves mounting the bucket 1 onto the arm of an excavator, and then connecting a pipe to a suction pump to a connecting pipe 2. The output end of the pipe connected to the suction pump is located above a dump truck. The excavator can then control the bucket 1 to remove silt from the riverbed. After the silt enters the bucket 1, a motor 3 drives a gear 4 to rotate, causing the gear 4 to move the first sealing plate 5 downwards, thus sealing the end of the bucket 1. This prevents the silt from flowing out, reducing the need for repeated silt removal. Simultaneously, the suction pump allows the silt in the bucket 1 to be directly sucked from the connecting pipe 2 onto the dump truck, achieving a rapid loading of the silt into the truck and significantly improving the efficiency of river dredging. After the silt in the bucket 1 is completely removed, the gear 4 drives the first sealing plate 5 to slide upwards, allowing the bucket 1 to continue dredging silt.

[0035] The bucket 1 has an installation groove 8 on the side near the mounting head 7. A first filter screen 9 is fixedly connected in the installation groove 8. A pair of connecting plates 11 are fixedly connected on the side of the bucket 1 near the first filter screen 9. A second sealing plate 10, which seals the installation groove 8, is connected between the connecting plates 11 by a torsion spring. The bucket 1 is equipped with a drive mechanism to drive the second sealing plate 10 to rotate. Since the silt contains a lot of stones, some of the larger stones may block the river channel and affect the smooth flow of water. At this time, the above mechanism can be used to drive the second sealing plate 10 to stop sealing the installation groove 8 after the bucket 1 has been working for a period of time (the opening of the bucket 1 should not be tilted downward as much as possible to keep the stones in the bucket 1). Then, the bucket 1 is tilted upward with the help of the excavator arm. At this time, the smaller stones will pass through the mesh of the first filter screen 9 and fall directly, while the larger stones remain in the bucket 1. Afterward, the stones in the bucket 1 can be poured into a designated transport vehicle with the help of the excavator arm, thereby further improving the dredging effect of the river channel.

[0036] The driving mechanism includes a hollow elastic block 12 fixed to the top surface of the inner wall of the bucket 1. A hollow cylinder 15 is fixedly connected to the inner wall of the bucket 1 near the mounting groove 8. A push rod 16 is slidably connected to the cylinder 15 near the second sealing plate 10. A return spring (not shown in the figure) is fixedly connected between the push rod 16 away from the second sealing plate 10 and the inner wall of the cylinder 15. The push rod 16 passes through the side wall of the bucket 1. A conduit 14 communicates between the elastic block 12 and the cylinder 15. A pressure plate 13 aligned with the elastic block 12 is fixedly connected to the first sealing plate 5 near the connecting pipe 2.

[0037] When the second sealing plate 10 needs to be opened, the motor 3 drives the gear 4 to move the first sealing plate 5 upward until it moves to the pressure plate 13 to squeeze the elastic block 12. At this time, the gas in the elastic block 12 will enter the cylinder 15 through the conduit 14 to push the push rod 16, so that the push rod 16 pushes the second sealing plate 10 to rotate and open. At this time, the stones in the bucket 1 can be discharged normally. The above mechanism achieves the effect of automatically opening the second sealing plate 10.

[0038] Multiple sets of unblocking rods 17 are fixedly connected to the side of the second sealing plate 10 near the mounting groove 8. The unblocking rods 17 correspond to the mesh of the first filter screen 9. Since the shape of the stones is not fixed, some stones are easily stuck in the mesh of the first filter screen 9 and are difficult to fall off. The above mechanism can control the first sealing plate 5 to move up and down, so that the elastic block 12 is squeezed back and forth. At this time, the top rod 16 will repeatedly push the second sealing plate 10, causing the second sealing plate 10 to swing. At this time, the unblocking rods 17 can hit the stones stuck in the mesh of the first filter screen 9, thereby knocking the stones off, thus achieving the effect of unblocking the first filter screen 9.

[0039] The bottom end of the connecting pipe 2 is slidably connected to an adjusting pipe 18, and a connecting line 19 is fixedly connected to the surface of the adjusting pipe 18. The other end of the connecting line 19 is fixedly connected to the first sealing plate 5. When stones slide out of the bucket 1, they are prone to impacting the connecting pipe 2, which could damage it. In this case, when stones are discharged from the bucket 1, the first sealing plate 5 can be raised. The first sealing plate 5 will pull the connecting line 19, causing the connecting line 19 to drive the adjusting pipe 18 upward, thereby creating a large gap between the adjusting pipe 18 and the bottom surface of the inner wall of the bucket 1 to allow stones to pass through. When it is necessary to suck away the silt in the bucket 1, the first sealing plate 5 will be in a sealed state. At this time, the adjusting pipe 18 will move downward to the lowest point due to gravity, but there will be a certain gap between it and the bottom surface of the bucket 1. The silt can then pass through the adjusting pipe 18 and the connecting pipe 2 and be sucked away by the silt pump. The above mechanism achieves the function of protecting the connecting pipe 2 and improving its service life.

[0040] A circular sleeve 20 is fixedly connected to the bottom end of the regulating pipe 18, and a second filter screen (not shown in the figure) is fixedly connected to the inner wall of the circular sleeve 20. When the regulating pipe 18 is suctioning sludge, it easily sucks up impurities such as stones and branches mixed in the sludge. These impurities can easily damage the inner wall of the pipe and also easily cause the sludge suction pump to malfunction. At this time, the second filter screen can filter out impurities such as branches and stones in the sludge, thereby achieving the effect of protecting the pipe and the sludge suction pump.

[0041] A rotating ring 21 is rotatably connected to the surface of the circular sleeve 20. A U-shaped cleaning plate 23 is fixedly connected to the side wall of the rotating ring 21. The bottom surface of the cleaning plate 23 is located below the regulating pipe 18. A spiral blade 22 is fixedly connected to the top surface of the rotating ring 21. A round rod 24 for pushing the spiral blade 22 is fixedly connected to the side wall of the connecting pipe 2 via a bracket. Since the branches filtered by the second filter screen can easily get tangled on the regulating pipe 18, thus affecting the sludge suction effect of the regulating pipe 18, the round rod 24 can be used to push the spiral blade 22 when the regulating pipe 18 moves upward with the first sealing plate 5. This causes the spiral blade 22 to drive the rotating ring 21 to rotate. At this time, the cleaning plate 23 will sweep away the branches tangled at the bottom of the regulating pipe 18, so that the branches no longer affect the use of the regulating pipe 18, thereby improving the sludge suction effect of the regulating pipe 18.

[0042] Example 2: Figure 6 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a set of sliding grooves are provided on the bottom surface of the first sealing plate 5, and a push rod 25 is slidably connected to the inner wall of the sliding groove. A drive spring 26 is fixedly connected between the top surface of the push rod 25 and the top surface of the inner wall of the sliding groove. The bottom end of the push rod 25 is domed. Since there may be stones below the first sealing plate 5 when the first sealing plate 5 moves downward to seal the bucket 1, the stones will hinder the closing of the first sealing plate 5. Through the above mechanism, during the process of the first sealing plate 5 moving downward to close, the domed end of the push rod 25 can push the stones located below the first sealing plate 5, so that the stones are pushed away from below the first sealing plate 5 by the push rod 25. At this time, the first sealing plate 5 can close normally, achieving the effect of allowing the first sealing plate 5 to close normally.

[0043] The bottom inner wall of the bucket 1 is fixedly connected to an elastic hollow block 27 aligned with the first sealing plate 5. The top surface of the hollow block 27 is arc-shaped. Since the shape of the stone is not fixed, some stones may have multiple surfaces in contact with the bottom inner wall of the bucket 1. It is difficult for the push rod 25 to push such stones. In this case, the arc-shaped surface of the hollow block 27 can be used to guide the stone, so that the stone does not remain under the first sealing plate 5 as much as possible. If a stone remains on the hollow block 27, the push rod 25 can be used to push the stone. At this time, the hollow block 27 will be deformed by the squeezing force, causing the position of the stone to shift, thereby pushing the stone away from under the first sealing plate 5, improving the effect of pushing and cleaning the stones under the first sealing plate 5.

[0044] like Figure 7 As shown, a method for using a river dredging device in a water conservancy project is described. The method employs the aforementioned river dredging device and includes the following steps:

[0045] S1: By installing bucket 1 onto the arm of the excavator, and then connecting the pipe connected to the suction pump to the connecting pipe 2, the output end of the pipe connected to the suction pump is located above the dump truck.

[0046] S2: Using an excavator to control the bucket 1 to remove silt from the river channel, after the silt enters the bucket 1, the motor 3 drives the gear 4 to rotate, so that the gear 4 drives the first sealing plate 5 to move downward and seal the port of the bucket 1.

[0047] S3: The sludge suction pump allows the sludge in the bucket 1 to be directly sucked from the connecting pipe 2 to the top of the dump truck. After the dump truck is full of sludge, it is used to transport the sludge to the spoil disposal site.

[0048] The above method can be used to quickly remove silt with the help of the bucket 1, thereby improving the dredging efficiency of the river.

[0049] Working principle: By installing bucket 1 onto the excavator's boom, and then connecting the pipe to the suction pump to the connecting pipe 2, with the output end of the pipe connected to the suction pump positioned above the dump truck, the excavator can control the bucket to dredge the silt in the riverbed. Once the silt enters bucket 1, motor 3 drives gear 4 to rotate, causing gear 4 to move the first sealing plate 5 downwards, thus sealing the end of bucket 1. This prevents the silt from flowing out of bucket 1, reducing the need for repeated dredging. Simultaneously, the suction pump draws the silt from bucket 1 directly from the connecting pipe 2 to the top of the dump truck, achieving a rapid loading of the silt into the truck. This greatly improves the efficiency of river dredging. After the silt in the bucket 1 is sucked out, the gear 4 drives the first sealing plate 5 to slide upward, and then the bucket 1 can continue to dredge the silt. After the bucket has been working for a period of time (the opening of the bucket should not be tilted downward as much as possible, so that the stones remain in the bucket), the drive mechanism drives the second sealing plate 10 to stop sealing the mounting groove 8. Then, the excavator arm tilts the opening of the bucket 1 upward. At this time, smaller stones will pass through the mesh of the first filter screen 9 and fall directly, leaving larger stones in the bucket 1. Afterward, the excavator arm can be used to pour the stones in the bucket into the designated transport vehicle, thereby further improving the effect of river dredging.

[0050] When the second sealing plate 10 needs to be opened, the motor 3 drives the gear 4 to move the first sealing plate 5 upward until it reaches the pressure plate 13 to squeeze the elastic block 12. At this time, the gas in the elastic block 12 will enter the cylinder 15 through the conduit 14 to push the push rod 16, so that the push rod 16 pushes the second sealing plate 10 to rotate and open. At this time, the stones in the bucket 1 can be discharged normally. The above mechanism achieves the effect of automatically opening the second sealing plate 10. Since the shape of the stones is not fixed, some stones are easy to get stuck in the mesh of the first filter screen 9 and are difficult to fall off. The above mechanism can control the first sealing plate 5 to move up and down, so that the elastic block 12 is squeezed back and forth. At this time, the push rod 16 will repeatedly push the second sealing plate 10, so that the second sealing plate 10 swings. At this time, the unblocking rod 17 can hit the stones stuck in the mesh of the first filter screen 9, thereby knocking the stones off, thus achieving the effect of unblocking the first filter screen 9.

[0051] Because stones can easily impact and damage connecting pipe 2 when sliding out of bucket 1, the first sealing plate 5 can be raised during stone discharge. This pulls connecting line 19, causing adjusting pipe 18 to move upward, creating a large gap between adjusting pipe 18 and the bottom of the inner wall of bucket 1, allowing stones to pass through. When sludge needs to be removed from bucket 1, the first sealing plate 5 seals the bucket, and adjusting pipe 18 moves downward to its lowest point due to gravity, but a gap remains between it and the bottom of bucket 1. Sludge can then pass through adjusting pipe 18 and connecting pipe 2 and be sucked away by the sludge pump. This mechanism protects connecting pipe 2 and improves its usability. Lifespan; When the regulating pipe 18 is suctioning sludge, it easily sucks up impurities such as stones and branches mixed in the sludge. These impurities can easily damage the inner wall of the pipe and also cause sludge suction pump failure. At this time, the second filter screen can filter out impurities such as branches and stones in the sludge, thereby achieving the effect of protecting the pipe and sludge suction pump. Since the branches filtered by the second filter screen can easily get tangled on the regulating pipe 18, thus affecting the sludge suction effect of the regulating pipe 18, when the regulating pipe 18 moves upward with the first sealing plate 5, the round rod 24 pushes the spiral blade 22, so that the spiral blade 22 drives the rotating ring 21 to rotate. At this time, the cleaning plate 23 will sweep away the branches tangled at the bottom of the regulating pipe 18, so that the branches no longer affect the use of the regulating pipe 18, thereby improving the sludge suction effect of the regulating pipe 18.

[0052] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0053] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A river dredging device for water conservancy projects, characterized in that: Includes a bucket (1); a mounting head (7) is fixedly connected to one side of the bucket (1), and the bucket (1) is open on the side away from the mounting head (7). A connecting pipe (2) is fixedly connected to the top surface of the bucket (1), and the bottom end of the connecting pipe (2) extends into the bucket (1). A first sealing plate (5) is slidably connected to the top surface of the bucket (1) near the opening end. A set of drive grooves (6) is opened on the side of the first sealing plate (5) near the connecting pipe (2). A motor (3) is fixedly connected to the top surface of the bucket (1) through a bracket. A gear (4) that meshes with the drive groove (6) is fixedly connected to the output end of the motor (3). The bucket (1) has an installation groove (8) on the side near the installation head (7). A first filter screen (9) is fixedly connected in the installation groove (8). A pair of connecting plates (11) are fixedly connected on the side of the bucket (1) near the first filter screen (9). A second sealing plate (10) that seals the installation groove (8) is twisted between the connecting plates (11) by a torsion spring. A drive mechanism that drives the second sealing plate (10) to rotate is provided in the bucket (1). The driving mechanism includes a hollow elastic block (12) fixed to the top surface of the inner wall of the bucket (1). A hollow cylinder (15) is fixedly connected to the inner wall of the bucket (1) near the mounting groove (8). A push rod (16) is slidably connected to the side of the cylinder (15) near the second sealing plate (10). A return spring is fixedly connected between the side of the push rod (16) away from the second sealing plate (10) and the inner wall of the cylinder (15). The push rod (16) passes through the side wall of the bucket (1). A conduit (14) communicates between the elastic block (12) and the cylinder (15). A pressure plate (13) aligned with the elastic block (12) is fixedly connected to the side of the first sealing plate (5) near the connecting pipe (2). The second sealing plate (10) is fixedly connected to a plurality of unblocking rods (17) on the side near the mounting groove (8), and the unblocking rods (17) correspond to the mesh of the first filter screen (9); The bottom end of the connecting pipe (2) is slidably connected to an adjusting pipe (18), and a connecting line (19) is fixedly connected to the surface of the adjusting pipe (18). The other end of the connecting line (19) is fixedly connected to the first sealing plate (5). The bottom end of the regulating tube (18) is fixedly connected to a round sleeve (20), and the inner wall of the round sleeve (20) is fixedly connected to a second filter screen; The surface of the circular sleeve (20) is rotatably connected to a rotating ring (21), and a "U"-shaped cleaning plate (23) is fixedly connected to the side wall of the rotating ring (21). The bottom surface of the cleaning plate (23) is located below the adjusting pipe (18), and a spiral blade (22) is fixedly connected to the top surface of the rotating ring (21). A round rod (24) for pushing the spiral blade (22) is fixedly connected to the side wall of the connecting pipe (2) through a bracket.

2. The river dredging device for water conservancy projects according to claim 1, characterized in that: The bottom surface of the first sealing plate (5) is provided with a set of sliding grooves, and a push rod (25) is slidably connected to the inner wall of the sliding groove. A drive spring (26) is fixedly connected between the top surface of the push rod (25) and the top surface of the inner wall of the sliding groove. The bottom end of the push rod (25) is domed.

3. A river dredging device for water conservancy projects according to claim 2, characterized in that: The bottom surface of the inner wall of the bucket (1) is fixedly connected to an elastic hollow block (27) aligned with the first sealing plate (5), and the top surface of the hollow block (27) is arc-shaped.

4. A method for using a river dredging device in a water conservancy project, wherein the method employs the river dredging device for a water conservancy project as described in claim 3, characterized in that: The method includes the following steps: S1: By installing the bucket onto the excavator arm and then connecting the pipe connected to the suction pump to the connecting pipe (2), the output end of the pipe connected to the suction pump is located above the dump truck. S2: The excavator controls the bucket to remove the silt in the river. After the silt enters the bucket, the motor (3) drives the gear (4) to rotate, so that the gear (4) drives the first sealing plate (5) to move downward and seal the port of the bucket. S3: The sludge pump allows the sludge in the bucket to be directly sucked from the connecting pipe (2) to the top of the dump truck. After the dump truck is filled with sludge, it is used to transport the sludge to the spoil disposal site.

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