A device for dredging river bottom sediment

Abstract

The present invention discloses a device for dredging river bottom sludge, which includes an electric lifting frame arranged on a hull. The receiving end of the electric lifting frame is connected with a placement box, and a sludge pump is connected inside the placement box. The sludge pump is electrically connected to the hull power supply. An outlet pipe is arranged at the top end of the sludge pump, and an inlet pipe is arranged at the bottom end of the sludge pump. It includes a rotation mechanism, a closing and opening mechanism, and an external stirring mechanism. When the sludge pump is started, the river bottom sludge will first pass through the filtration of the external stirring mechanism, so that hard impurities and gravel are isolated outside. Then, the sludge passes through the external stirring mechanism, enters the rotation mechanism, and finally enters the inlet pipe and is pumped into a collection box by the sludge pump through the outlet pipe, completing the cleaning of the river bottom sludge. The rotation mechanism can be used to adjust the rotation. When one channel of the rotation mechanism is blocked, the closing and opening mechanism will open another channel to continue the sludge pumping work, thereby ensuring the continuity of the sludge pumping work.

Description

Technical Field

[0001] The present invention relates to river cleaning. Background Art

[0002] In the process of pollution control of small rivers and lakes, because the water in small rivers and lakes usually has low fluidity, the bottom sludge cannot be diluted to other places and cannot be purified by the rivers and lakes themselves, resulting in bottom sediment pollution easily concentrated in the bottom sludge of small rivers. There is a dynamic balance of absorption and release between the water body and the bottom sediment. When the water body is seriously polluted, some pollutants can enter the bottom sediment through sedimentation and other effects, resulting in the bottom sediment having to be removed to reduce the pollutant content.

[0003] In the existing bottom mud cleaning technology, a transport ship is generally equipped with a dredge pump, which is used to pump the bottom mud into a collection box on the transport ship. The bottom mud is then transported out for treatment. However, when the dredge pump is extracting the riverbed mud, the bottom mud has strong adhesion and is easily adhered to the inner wall of the transport pipe. During the long adsorption process, the inner wall of the transport pipe will be blocked, resulting in the dredge pump being unable to suck the sludge through the transport pipe. In order to reopen the transport pipe, the dredge pump needs to suspend its dredge suction work, which affects the efficiency of bottom mud desilting. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for desilting riverbed mud, so as to overcome the defect that mud blocks a transport pipe and causes a mud pump to be unable to work continuously.

[0005] The technical solution for achieving the above-mentioned object is: a device for desilting riverbed silt, comprising an electric lifting frame arranged on a hull, a receiving end of the electric lifting frame being connected to a placement box, a dredge pump being connected within the placement box, the dredge pump being electrically connected to a power supply of the hull, an outlet pipe being arranged at the top end of the dredge pump, an inlet pipe being arranged at the bottom end of the dredge pump, a rotation mechanism, an opening and closing mechanism, and an external stirring mechanism;

[0006] A rotation mechanism, which is used to adjust the state of the inlet pipe and the mud pumping, and is arranged on the inlet pipe and the placement box;

[0007] An opening and closing mechanism, which is used to control the operation of the rotation mechanism and is arranged at the bottom end of the inlet pipe;

[0008] The external stirring mechanism is used to separate external hard impurities and is arranged at the bottom of the rotation mechanism.

[0009] Preferably, the rotation mechanism includes a push rod motor, a push rod, a main through pipe, a secondary through pipe, a push block, and an electric valve. The outer wall of the inlet pipe is connected to the main through pipe and the secondary through pipe. The main through pipe and the secondary through pipe are symmetrically distributed with respect to the inlet pipe. The inner walls of the main through pipe and the secondary through pipe are both slidably connected to a push block. The upper end of the push block is connected to a push rod. Sealing blocks are provided at the upper ends of the main through pipe and the secondary through pipe. The outer wall of the push rod penetrates through the sealing block. The push rod is connected to the output end of the push rod motor. The push rod motor is connected to the bottom end of the placement box. The push rod motor is electrically connected to the hull power supply.

[0010] Preferably, the opening and closing mechanism includes a round box, a first switch, a second switch a, a second switch b, a spring, a baffle, a first pressing rod, and a second pressing rod. The bottom end of the inlet pipe is connected to a round box. The bottom end of the inner wall of the round box is connected to a first switch and a second switch a. The bottom end of the inner wall of the inlet pipe is connected to a sealing cover. The bottom end of the sealing cover is connected to a second switch b. The outer wall of the baffle penetrates through the sealing cover. One side wall of the baffle is in contact with the port of the secondary through pipe. The bottom end of the baffle is connected to a first pressing rod and a second pressing rod. The first pressing rod is directly above the first switch. The bottom end of the second pressing rod is above the second switch a. The upper end of the second pressing rod is below the second switch b. The second switch a is electrically connected to the electric valve. The first switch is electrically connected to the push rod motor directly above the main through pipe. The second switch b is electrically connected to the push rod motor directly above the secondary through pipe. The first switch is electrically connected to the hull power supply. The second switch a is electrically connected to the hull power supply. The second switch b is electrically connected to the hull power supply.

[0011] Preferably, the external stirring mechanism includes a transfer box, a support plate, a filter plate, a square box, a drive motor, a rotating shaft, a drive gear, a first stirring blade, a secondary shaft, a driven gear, and a second stirring blade. The bottom ends of the main through pipe and the secondary through pipe are connected and communicated with a transfer box. The bottom end of the transfer box is connected to a support plate. A filter plate is provided at the bottom end of the transfer box. The outer wall of the support plate is connected to a square box. The inner wall of the square box is connected to a drive motor. The output end of the drive motor is connected to a rotating shaft. The outer wall of the rotating shaft is connected to a drive gear. The outer wall of the rotating shaft penetrates through the support plate. The outer wall of the rotating shaft is connected to a plurality of first stirring blades. The outer wall of the support plate is rotatably connected to a secondary shaft. One end of the secondary shaft is connected to a driven gear. The drive gear meshes with the driven gear. The outer wall of the secondary shaft is connected to a plurality of second stirring blades.

[0012] Preferably, a protective housing is provided on the outer wall of the push rod motor.

[0013] Preferably, both the main through pipe and the secondary through pipe are T-shaped pipes.

[0014] Preferably, the second pressing rod is U-shaped, and arc-shaped plates are connected to both the top end and the bottom end of the baffle.

[0015] Preferably, the first stirring blades and the second stirring blades are staggeredly distributed.

[0016] Preferably, a trapezoidal block is connected to the bottom end of the support plate.

[0017] Preferably, the end of the outlet pipe far from the sludge pump is communicated with the hull collection box.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. Start the sludge pump. The sludge at the bottom of the river will first pass through the filtration of the external stirring mechanism, so that hard impurities and gravel are isolated outside. Then, the sludge passes through the external stirring mechanism, enters the rotation mechanism, and finally enters the inlet pipe and is pumped into the collection box by the sludge pump through the outlet pipe, completing the cleaning of the sludge at the bottom of the river. The rotation mechanism can be adjusted. When one channel of the rotation mechanism is blocked, the opening and closing mechanism will open another channel to continue the sludge pumping work, thus ensuring the continuity of the sludge pumping work.

[0020] 2. The opening and closing mechanism opens the auxiliary pipe and turns on the push rod motor located directly above the main pipe, so that the sludge can enter the inlet pipe from the auxiliary pipe. The push rod motor drives the push block to move downward through the push rod, so that the push block pushes out the sludge adhering and blocking the inner wall of the main pipe, and the main pipe is unblocked. Since the main pipe is a T-shaped pipe, the push block can move to the upper end of the main pipe without hindering the flow of sludge and water in the main pipe. The sludge and water will impact the opening and closing mechanism, causing the opening and closing mechanism to turn on the push rod motor located directly above the auxiliary pipe, and the sludge in the auxiliary pipe is pushed out for subsequent use.

[0021] 3. The sludge and water will impact the closing cover of the baffle, causing the baffle to block the auxiliary pipe and drive the second pressing rod to squeeze the second switch b, so that the push rod motor located directly above the auxiliary pipe operates to scrape and clean the inner wall of the auxiliary pipe for use in the next rotation. When the inner wall of the main pipe adheres to a large amount of sludge and is blocked, the impact of the sludge and water on the baffle becomes smaller, and the baffle is pulled down by the spring, so that one end of the auxiliary pipe is opened. At the same time, the baffle drives the first pressing rod and the second pressing rod to move downward and squeeze, so that the push rod motor located above the main pipe operates and the electric valve opens, so that the auxiliary pipe is completely opened to replace the main pipe to receive the entry of sludge and water. After the push block in the main pipe pushes away the blocked sludge, the baffle is impacted by the sludge and water and moves up again, thus closing the auxiliary pipe and allowing the main pipe to continue operating, so as to ensure the continuous operation of the sludge pumping work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic upward view structure of the present invention;

[0024] Figure 3 It is a schematic cross-sectional top view structure of the present invention;

[0025] Figure 4 It is a schematic cross-sectional front view structure of the present invention;

[0026] Figure 5 It is a schematic cross-sectional right view structure of the present invention;

[0027] Figure 6 It is Figure 3 an enlarged schematic structure diagram of part A in

[0028] Figure 7 It is Figure 4 an enlarged schematic structure diagram of part B in

[0029] Figure 8 It is Figure 5 an enlarged schematic structure diagram of part C in

[0030] 1. Electric lifting frame; 2. Placing box; 3. Mud suction pump; 4. Outlet pipe; 5. Inlet pipe; 6. Rotation mechanism; 601. Push rod motor; 602. Push rod; 603. Main through pipe; 604. Sub through pipe; 605. Push block; 606. Electric valve; 7. Opening and closing mechanism; 701. Round box; 702. First switch; 703. Second switch a; 704. Second switch b; 705. Spring; 706. Baffle; 707. First pressure rod; 708. Second pressure rod; 8. External stirring mechanism; 801. Transfer box; 802. Support plate; 803. Filter plate; 804. Square box; 805. Driving motor; 806. Rotating shaft; 807. Driving gear; 808. First stirring blade; 809. Slave shaft; 810. Driven gear; 811. Second stirring blade. Detailed implementation manners

[0031] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It 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 to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] Next, the present invention will be further described in conjunction with the accompanying drawings.

[0033] Reference appendix Figures 1-8 A device for dredging river bottom sediment, comprising an electric lifting frame 1 arranged on a hull. The receiving end of the electric lifting frame 1 is connected with a placement box 2. A sludge pump 3 is connected inside the placement box 2. The sludge pump 3 is electrically connected to the hull power supply. An outlet pipe 4 is arranged at the top end of the sludge pump 3. One end of the outlet pipe 4 far from the sludge pump 3 is communicated with the hull collection box. An inlet pipe 5 is arranged at the bottom end of the sludge pump 3, including a rotation mechanism 6, a switching mechanism 7 and an external stirring mechanism 8;

[0034] The rotation mechanism 6 is used to adjust the sludge pumping state of the inlet pipe 5. The rotation mechanism 6 is arranged on the inlet pipe 5 and the placement box 2;

[0035] The switching mechanism 7 is used to control the operation of the rotation mechanism 6. The switching mechanism 7 is arranged at the bottom end of the inlet pipe 5;

[0036] The external stirring mechanism 8 is used to separate external hard impurities. The external stirring mechanism 8 is arranged at the bottom of the rotation mechanism 6.

[0037] Start the electric lifting frame 1, put the placement box 2 and the sludge pump 3 into the water, start the sludge pump 3. The river bottom sludge will first pass through the filtration of the external stirring mechanism 8, so that hard impurities and gravel are isolated outside. Then, the sludge passes through the external stirring mechanism 8, enters the rotation mechanism 6, and finally enters the inlet pipe 5 and is pumped into the collection box by the sludge pump 3 through the outlet pipe 4, completing the cleaning of the river bottom sludge. The rotation mechanism 6 can be adjusted for rotation. When one channel of the rotation mechanism 6 is blocked, the switching mechanism 7 will open another channel to continue the sludge pumping work, thus ensuring the continuity of the sludge pumping work.

[0038] Reference appendix Figures 1-6 The rotation mechanism 6 includes a push rod motor 601, a push rod 602, a main through pipe 603, a secondary through pipe 604, a push block 605 and an electric valve 606. The outer wall of the inlet pipe 5 is connected with the main through pipe 603 and the secondary through pipe 604. The main through pipe 603 and the secondary through pipe 604 are symmetrically distributed about the inlet pipe 5. The inner walls of the main through pipe 603 and the secondary through pipe 604 are both slidably connected with the push block 605. The upper end of the push block 605 is connected with the push rod 602. Sealing blocks are arranged at the upper ends of the main through pipe 603 and the secondary through pipe 604. The outer wall of the push rod 602 penetrates through the sealing blocks. The push rod 602 is connected with the output end of the push rod motor 601. A protective shell is arranged on the outer wall of the push rod motor 601. The push rod motor 601 is connected with the bottom end of the placement box 2. The push rod motor 601 is electrically connected to the hull power supply. The main through pipe 603 and the secondary through pipe 604 are both T-shaped pipes.

[0039] Start the sludge pump 3. The sludge at the bottom of the river will first pass through the filtration of the external stirring mechanism 8, so that hard impurities and gravel are isolated outside. Then, the sludge enters the main through pipe 603 through the external stirring mechanism 8 and then enters the inlet pipe 5. When the main through pipe 603 is blocked, the opening and closing mechanism 7 opens the auxiliary through pipe 604 and turns on the push rod motor 601 located directly above the main through pipe 603, so that the sludge can enter the inlet pipe 5 from the auxiliary through pipe 604. The push rod motor 601 drives the push block 605 to move downward through the push rod 602, so that the push block 605 pushes out the sludge adhering to and blocking the inner wall of the main through pipe 603, and the main through pipe 603 is unblocked. Using the main through pipe 603 as a T-shaped pipe, the push block 605 can move to the upper end of the main through pipe 603 without hindering the flow of sludge and water in the main through pipe 603. The sludge and water will impact the opening and closing mechanism 7, causing the opening and closing mechanism 7 to turn on the push rod motor 601 located directly above the auxiliary through pipe 604, so that the sludge in the auxiliary through pipe 604 is pushed out for convenient subsequent use.

[0040] Reference appendix Figure 8 The opening and closing mechanism 7 includes a round box 701, a first switch 702, a second switch a703, a second switch b704, a spring 705, a baffle 706, a first push rod 707 and a second push rod 708. The bottom end of the inlet pipe 5 is connected to the round box 701. The bottom end of the inner wall of the round box 701 is connected to the first switch 702 and the second switch a703. The bottom end of the inner wall of the inlet pipe 5 is connected to a sealing cover, and the bottom end of the sealing cover is connected to the second switch b704. The outer wall of the baffle 706 penetrates through the sealing cover, and one side wall of the baffle 706 is attached to the port of the auxiliary through pipe 604. The bottom end of the baffle 706 is connected to the first push rod 707 and the second push rod 708. The shape of the second push rod 708 is U-shaped. The top and bottom ends of the baffle 706 are both connected with arc-shaped plates. The first push rod 707 is located directly above the first switch 702. The bottom end of the second push rod 708 is located above the second switch a703, and the upper end of the second push rod 708 is located below the second switch b704. The second switch a703 is electrically connected to the electric valve 606. The first switch 702 is electrically connected to the push rod motor 601 located directly above the main through pipe 603. The second switch b704 is electrically connected to the push rod motor 601 located directly above the auxiliary through pipe 604. The first switch 702 is electrically connected to the hull power supply. The second switch a703 is electrically connected to the hull power supply. The second switch b704 is electrically connected to the hull power supply.

[0041] When the silt and water in the main pipe 603 normally enter the inlet pipe 5, the silt and water will impact the sealing cover of the baffle plate 706, causing the baffle plate 706 to block the auxiliary pipe 604 and driving the second pressure rod 708 to squeeze the second switch b704, so that the push rod motor 601 located directly above the auxiliary pipe 604 operates to scrape and clean the inner wall of the auxiliary pipe 604 for the next rotation and use. When the inner wall of the main pipe 603 adheres to a large amount of silt and becomes blocked, the impact of the silt and water on the baffle plate 706 becomes smaller, and the baffle plate 706 is pulled down by the spring 705, opening one end of the auxiliary pipe 604. At the same time, the baffle plate 706 drives the first pressure rod 707 and the second pressure rod 708 to squeeze downward, causing the push rod motor 601 located above the main pipe 603 to operate and the electric valve 606 to open, completely opening the auxiliary pipe 604 to replace the main pipe 603 to receive the entry of silt and water. After the push block 605 in the main pipe 603 pushes away the blocked silt, the baffle plate 706 is impacted upward by the silt and water again, thereby closing the auxiliary pipe 604 and enabling the main pipe 603 to continue operating, thus ensuring the continuous operation of the mud pumping work.

[0042] Reference appendix Figures 3-7 As shown in the figure, the external stirring mechanism 8 includes a transfer box 801, a support plate 802, a filter plate 803, a square box 804, a drive motor 805, a rotating shaft 806, a drive gear 807, a first stirring blade 808, a secondary shaft 809, a driven gear 810, and a second stirring blade 811. The bottom ends of the main pipe 603 and the auxiliary pipe 604 are connected and communicated with a transfer box 801. The bottom end of the transfer box 801 is connected with a support plate 802. The bottom end of the support plate 802 is connected with a trapezoidal block. A filter plate 803 is arranged at the bottom end of the transfer box 801. The outer wall of the support plate 802 is connected with a square box 804. The inner wall of the square box 804 is connected with a drive motor 805. The output end of the drive motor 805 is connected with a rotating shaft 806. The outer wall of the rotating shaft 806 is connected with a drive gear 807. The outer wall of the rotating shaft 806 penetrates through the support plate 802. The outer wall of the rotating shaft 806 is connected with a plurality of first stirring blades 808. The outer wall of the support plate 802 is rotatably connected with a secondary shaft 809. One end of the secondary shaft 809 is connected with a driven gear 810. The drive gear 807 meshes with the driven gear 810. The outer wall of the secondary shaft 809 is connected with a plurality of second stirring blades 811. The first stirring blades 808 and the second stirring blades 811 are staggered.

[0043] Place the support plate 802 at the bottom of the river channel, so that there is a gap between the bottom of the river channel and the filter plate 803. The main through pipe 603 or the auxiliary through pipe 604 sucks inward, so that the silt and water pass through the filtration of the filter plate 803 and enter the transfer box 801, and then enter the main through pipe 603 or the auxiliary through pipe 604. Before the support plate 802 enters the water, start the drive motor 805. The drive motor 805 drives the rotating shaft 806 to rotate. The rotating shaft 806 drives the first stirring blade 808 and the drive gear 807 to rotate. The drive gear 807 drives the driven shaft 809 to rotate through the driven gear 810. The driven shaft 809 drives the second stirring blade 811 to rotate. The first stirring blade 808 and the second stirring blade 811 stir around the filter plate 803 to push away hard impurities and gravel, so as to avoid being sucked into the sludge pump 3.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for dredging river bottom sludge, comprising an electric lifting frame (1) arranged on a hull, a placement box (2) is connected to the receiving end of the electric lifting frame (1), a sludge pump (3) is connected inside the placement box (2), the sludge pump (3) is electrically connected to the hull power supply, an outlet pipe (4) is arranged at the top end of the sludge pump (3), and an inlet pipe (5) is arranged at the bottom end of the sludge pump (3), characterized in that, It includes a rotation mechanism (6), an opening and closing mechanism (7), and an external stirring mechanism (8); The rotation mechanism (6) is used to adjust the sludge pumping state of the inlet pipe (5), and the rotation mechanism (6) is arranged on the inlet pipe (5) and the placement box (2); The opening and closing mechanism (7) is used to control the operation of the rotation mechanism (6), and the opening and closing mechanism (7) is arranged at the bottom end of the inlet pipe (5); The external stirring mechanism (8) is used to separate external hard impurities, and the external stirring mechanism (8) is arranged at the bottom of the rotation mechanism (6); The rotation mechanism (6) includes a push rod motor (601), a main through pipe (603), a secondary through pipe (604), and an electric valve (606), The opening and closing mechanism (7) includes a round box (701), a first switch (702), a second switch a (703), a second switch b (704), a spring (705), a baffle (706), a first pressure rod (707), and a second pressure rod (708). The bottom end of the inlet pipe (5) is connected to a round box (701). The bottom end of the inner wall of the round box (701) is connected to a first switch (702) and a second switch a (703). The bottom end of the inner wall of the inlet pipe (5) is connected to a sealing cover. The bottom end of the sealing cover is connected to a second switch b (704). The outer wall of the baffle (706) penetrates through the sealing cover. One side wall of the baffle (706) is in contact with the port of the secondary through pipe (604). The bottom end of the baffle (706) is connected to a first pressure rod (707) and a second pressure rod (708). The first pressure rod (707) is directly above the first switch (702). The bottom end of the second pressure rod (708) is above the second switch a (703). The upper end of the second pressure rod (708) is below the second switch b (704). The second switch a (703) is electrically connected to the electric valve (606). The first switch (702) is electrically connected to the push rod motor (601) directly above the main through pipe (603). The second switch b (704) is electrically connected to the push rod motor (601) directly above the secondary through pipe (604). The first switch (702) is electrically connected to the hull power supply. The second switch a (703) is electrically connected to the hull power supply. The second switch b (704) is electrically connected to the hull power supply.

2. The device for dredging river bottom sediment according to claim 1, characterized in that, The rotation mechanism (6) includes a push rod (602) and a push block (605). The outer wall of the inlet pipe (5) is connected with a main through pipe (603) and a sub-through pipe (604). The main through pipe (603) and the sub-through pipe (604) are symmetrically distributed with respect to the inlet pipe (5). The inner walls of the main through pipe (603) and the sub-through pipe (604) are both slidably connected with a push block (605). The upper end of the push block (605) is connected with a push rod (602). Sealing blocks are arranged at the upper ends of the main through pipe (603) and the sub-through pipe (604). The outer wall of the push rod (602) penetrates through the sealing block. The push rod (602) is connected with the output end of a push rod motor (601). The push rod motor (601) is connected with the bottom end of the placement box (2). The push rod motor (601) is electrically connected with the hull power supply.

3. The device for dredging river bottom sediment according to claim 1, characterized in that, The external stirring mechanism (8) includes a transfer box (801), a support plate (802), a filter plate (803), a square box (804), a drive motor (805), a rotating shaft (806), a drive gear (807), a first stirring blade (808), a secondary shaft (809), a driven gear (810), and a second stirring blade (811). The bottom ends of the main through pipe (603) and the sub-through pipe (604) are connected and communicated with a transfer box (801). The bottom end of the transfer box (801) is connected with a support plate (802). A filter plate (803) is arranged at the bottom end of the transfer box (801). The outer wall of the support plate (802) is connected with a square box (804). The inner wall of the square box (804) is connected with a drive motor (805). The output end of the drive motor (805) is connected with a rotating shaft (806). A drive gear (807) is connected to the outer wall of the rotating shaft (806). The outer wall of the rotating shaft (806) penetrates through the support plate (802). A plurality of first stirring blades (808) are connected to the outer wall of the rotating shaft (806). A secondary shaft (809) is rotatably connected to the outer wall of the support plate (802). One end of the secondary shaft (809) is connected with a driven gear (810). The drive gear (807) meshes with the driven gear (810). A plurality of second stirring blades (811) are connected to the outer wall of the secondary shaft (809).

4. The device for dredging river bottom sludge according to claim 2, characterized in that, A protective housing is arranged on the outer wall of the push rod motor (601).

5. The device for river sediment dredging according to claim 2, characterized in that, Both the main through pipe (603) and the sub-through pipe (604) are T-shaped pipes.

6. The device for dredging river bottom sludge according to claim 1, characterized in that, The shape of the second pressure rod (708) is U-shaped. Arc-shaped plates are connected to both the top end and the bottom end of the baffle (706).

7. The device for dredging river bottom sediment according to claim 3, characterized in that, The first stirring blades (808) and the second stirring blades (811) are staggeredly distributed.

8. A device for dredging river bottom sediment according to claim 3, characterized in that, A trapezoidal block is connected to the bottom end of the support plate (802).

9. The device for river sediment dredging according to claim 3, wherein, One end of the outlet pipe (4) far away from the sludge pump (3) is communicated with the hull collection box.

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