A dredging device for water conservancy projects

Abstract

The present invention provides a dredging device for water conservancy projects, comprising a cover body, one side of the cover body is provided with an opening for gathering sludge, the other side is provided with a sludge suction mechanism, and the side of the cover body corresponding to the opening is provided with a stirring mechanism; the sludge suction mechanism comprises a sludge suction pipe provided on the cover body, and the sludge suction pipe is connected with the cover body; the stirring mechanism comprises a rotating shaft provided on the cover body, and a cutting blade provided on the rotating shaft, at least two cutting blades are provided at intervals along the length direction of the rotating shaft, a mounting seat for installing the cutting blade is provided on the rotating shaft, and a driving assembly for driving the rotating shaft to rotate is provided on the cover body. The present invention has a simple structure and is convenient for maintenance and use. By providing a cutting blade on the rotating shaft, the bottom sludge can be crushed and stirred, and the sludge suction pipe is convenient for quickly extracting the bottom sludge, which is conducive to improving the dredging effect and dredging efficiency of the dredging device.

Description

Technical Field

[0001] The invention belongs to the field of water conservancy projects, and in particular relates to a silt removal device for water conservancy projects. Background Art

[0002] The starting point of the middle line of the South-to-North Water Diversion Project is located at the Danjiangkou Reservoir in the middle and upper reaches of the Han River. The water receiving areas are Henan, Hebei, Beijing, and Tianjin, which greatly meets the water demand of the above provinces and cities. However, due to the long water diversion distance, some impurities such as silt, algae, and microorganisms will be mixed in the water during the water transfer process. Therefore, the water receiving area needs to settle the water before it can be used. The sedimentation tank sedimentation method is generally used to precipitate the sludge in the water body. Since the water body is continuously replenished into the sedimentation tank, the sedimentation tank needs to be frequently desilted to ensure that there is enough volume in the sedimentation tank for storing the precipitated water. The existing dredging device generally uses the crushing and extraction method for dredging, but the stirring mechanism of the existing dredging device is generally complex in structure, which is not conducive to maintenance, and the stirring and crushing effect of the sludge is not good, which affects the dredging effect and dredging efficiency of the dredging device. Summary of the invention

[0003] In view of this, the present invention aims to provide a silt removal device for water conservancy projects to solve the problem of poor silt removal effect of existing silt removal devices.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A silt removal device for water conservancy projects, comprising a cover body, one side of the cover body is provided with an opening for collecting silt, the other side of the cover body is provided with a sludge suction mechanism, and the side of the cover body corresponding to the opening is provided with a stirring mechanism;

[0006] The mud suction mechanism comprises a mud suction pipe arranged on the cover body, and the mud suction pipe is connected with the cover body;

[0007] The stirring mechanism includes a rotating shaft arranged on the cover body, and a cutting blade arranged on the rotating shaft, at least two cutting blades are arranged at intervals along the length direction of the rotating shaft, the rotating shaft is provided with a mounting seat for installing the cutting blade, and the cover body is provided with a driving component for driving the rotating shaft to rotate; the cutting blade is provided with a connecting piece that cooperates with the mounting seat, and one end of the connecting piece facing the mounting seat is provided with an assembly groove that cooperates with the mounting seat, and the other end is connected to the cutting blade; a fixing bolt is provided at a position corresponding to the assembly groove on the connecting piece, and a bolt hole that cooperates with the fixing bolt is provided on the mounting seat.

[0008] Furthermore, an insert block is provided on the connecting member at a position corresponding to the assembly groove, and a slot matching the insert block is provided on the mounting seat. One end of the insert block is arranged on the connecting member, and the other end extends into the slot.

[0009] Furthermore, the cutting blade is connected to the connecting piece via a reinforcing plate.

[0010] Furthermore, a plurality of cutting blades are spirally arranged, and the mounting seat is spirally arranged on the rotating shaft corresponding to the cutting blades.

[0011] Furthermore, the mounting seats are connected via guide plates, and the mud suction pipe is arranged corresponding to the guide plates.

[0012] Furthermore, one end of the cutting blade is mounted on the mounting seat via a connecting piece, and the other end is provided with a bending portion.

[0013] Compared with the prior art, the silt removal device for water conservancy projects described in the present invention has the following advantages:

[0014] The present invention has a simple structure and is easy to maintain and use. By arranging a cutting blade on the rotating shaft, the underwater sludge can be crushed and stirred, which is convenient for the sludge suction pipe to quickly extract the underwater sludge, which is beneficial to improving the dredging effect and dredging efficiency of the dredging device. By arranging the cutting blade and the mounting seat in a spiral shape and connecting each mounting seat through a guide plate, a spiral conveying structure can be formed on the rotating shaft. When the rotating shaft rotates, the crushed sludge can be driven to move toward the sludge suction pipe, which is convenient for the sludge suction pipe to quickly extract the sludge in front of the cover body. By using a connecting piece to install and fix the cutting blade, not only the stability of the cutting blade on the mounting seat can be improved, but also the disassembly of the cutting blade is convenient, which reduces the difficulty of use and maintenance of the dredging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic structural diagram of a silt removal device for a water conservancy project according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic structural diagram of a rotating shaft in a silt removal device for a water conservancy project according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic structural diagram of a cutting blade in a silt removal device for a water conservancy project according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic structural diagram of a sealing gasket installed in a connecting piece of a silt removal device for a water conservancy project according to an embodiment of the present invention;

[0020] Figure 5 It is a schematic structural diagram of a connecting piece in a dredging device for a water conservancy project according to an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1. Cover body; 2. Suction pipe; 3. Rotating shaft; 4. Cutting disc; 5. Mounting seat; 6. Driving assembly; 7. Guide plate; 8. Reinforcement plate; 9. Fixing bolt; 10. Bending part; 11. Connecting piece; 12. Bolt hole; 13. Positioning ring; 14. Slot; 15. Sealing gasket; 16. Mounting hole; 17. Through hole; 18. Locking nut; 19. Insert block; 20. Assembly groove; 21. Annular groove. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] A silt removal device for water conservancy projects, such as Figures 1 to 5 As shown, it comprises a cover body 1, one side of the cover body 1 is provided with an opening for collecting sludge, the other side is provided with a sludge suction mechanism, and the side of the cover body 1 corresponding to the opening is provided with a stirring mechanism.

[0028] The above-mentioned mud suction mechanism includes a mud suction pipe 2 arranged on the cover body 1, and the mud suction pipe 2 is connected to the cover body 1. The mud suction pipe 2 can be fixed on the cover body 1 through a flange. In practical applications, the cover body 1 can be installed and fixed on a ship, and the ship is used to drive the cover body 1 to move, so as to achieve comprehensive cleaning of sludge in the river or pool. The mud suction pipe 2 can also be connected to a mud pump on board or on land to achieve continuous extraction of sludge.

[0029] Optionally, to improve the sludge suction efficiency, a plurality of sludge suction pipes 2 can be arranged at intervals along the length direction of the rotating shaft 3, and a recessed portion for sludge gathering can also be provided at the position corresponding to the sludge suction pipe 2 on the cover body 1, and the cover body 1 can also be designed as a trumpet-shaped structure to better gather sludge and accelerate the conduction of sludge to the sludge suction pipe 2, so as to facilitate the sludge suction pipe 2 to efficiently extract sludge; for example, two sludge suction pipes 2 can be arranged at intervals. Compared with setting one sludge suction pipe 2, the two sludge suction pipes 2 can extract a larger amount of sludge per unit time. Under the convergence effect of the cover body 1, the sludge can be crushed by the stirring mechanism and then quickly extracted by the two sludge suction pipes 2, which is beneficial to improving the dredging efficiency and dredging effect of this device.

[0030] The above-mentioned stirring mechanism includes a rotating shaft 3 arranged on the cover body 1, and a cutting blade 4 arranged on the rotating shaft 3, at least two cutting blades 4 are arranged at intervals along the length direction of the rotating shaft 3, the rotating shaft 3 is provided with a mounting seat 5 for installing the cutting blade 4, and the cover body 1 is provided with a driving component 6 for driving the rotating shaft 3 to rotate; the cutting blade 4 is provided with a connecting piece 11 that cooperates with the mounting seat 5, and the connecting piece 11 is provided with an assembly groove 20 that cooperates with the mounting seat 5 at one end facing the mounting seat 5, and the other end is connected to the cutting blade 4; a fixing bolt 9 is provided at a position corresponding to the mounting seat 5 on the connecting piece 11, and a bolt hole 12 that cooperates with the fixing bolt 9 is provided on the mounting seat 5.

[0031] Optionally, the mounting seat 5 can be welded and fixed on the rotating shaft 3, and a through hole 17 for installing a fixing bolt 9 can be provided on the connecting piece 11. One end of the fixing bolt 9 passing through the through hole 17 can be fixed by installing a locking nut 18 to achieve limited fixation of the fixing nut; by arranging a detachable cutting blade 4 on the mounting seat 5, not only the maintenance and use difficulty of the dredging device is reduced, but also by arranging a plurality of cutting blades 4 at intervals along the rotating shaft 3, efficient crushing and stirring of the underwater sludge can be achieved, which facilitates the sludge suction pipe 2 to quickly extract the sludge, which is beneficial to improving the dredging effect and dredging efficiency of the dredging device.

[0032] During the actual operation of the dredging device, the underwater sludge is complicated and may be mixed with sand, gravel and sludge. After the dredging device has been used for a certain period of time, the cutting blade is easily damaged by bumps or wear. Even if the cutting blade is not damaged, due to long-term underwater use, the cutting blade will cause the anti-rust paint to fall off and then rust due to wear, affecting the service life of the cutting blade and the stirring effect of the sludge. Therefore, it is necessary to maintain or replace the cutting blade according to the use of the dredging device, such as spraying anti-rust paint on the cutting blade after use, or directly replacing the cutting blade to ensure that the stirring mechanism can better stir and crush the sludge. However, the existing cutting blades are generally directly mounted and fixed on the corresponding assembly seat with bolts, and the assembly seat is provided with a slot for installing the cutting blade. In actual use, foreign matter such as mud and sand can easily enter and block the slot, making it inconvenient to disassemble the cutting blade, which increases the difficulty of maintaining the cutting blade.

[0033] In this embodiment, the cutting blade 4 can be fixed on the mounting seat 5 by the connecting member 11, and the cutting blade 4 can be fixed on the connecting member 11 by welding. The installation of the cutting blade 4 is realized by using the connecting member 11 in cooperation with the mounting seat 5, which is more convenient to operate, stable and reliable, and is conducive to improving the stability of the cutting blade 4 on the mounting seat 5. When the cutting blade 4 needs to be assembled, the assembly groove 20 on the connecting member 11 can be aligned and inserted into the mounting seat 5, and then the fixing bolts 9 are sequentially passed through the bolt holes 12 to realize the installation and fixing of the connecting member 11; the connecting member 11 can also cover the mounting seat 5 to prevent foreign objects from clogging the mounting seat 5, which is convenient for the removal and replacement of the cutting blade 4. When the operator removes the cutting blade 4, the operator only needs to remove the fixing screws and use tools to take the connecting member 11 away from the mounting seat 5, which is more convenient to operate and improves the convenience of replacing the cutting blade.

[0034] The cutting blade 4 is connected to the connecting piece 11 via a reinforcing plate 8. Four reinforcing plates can be evenly arranged along the circumference of the cutting blade to improve the structural strength and stability of the cutting blade on the connecting piece. For example, one end of the reinforcing plate 8 can be welded and fixed to the connecting piece 11, and the other end can be welded and fixed to the connecting piece 11. The reinforcing plate 8 can further improve the structural strength of the connection between the cutting blade 4 and the connecting piece 11, thereby helping to improve the service life of the cutting blade 4 and ensure that the cutting blade 4 can always stably crush the sludge.

[0035] A slot 14 is provided on the mounting seat 5 at a position corresponding to the cutting blade 4, and an insert block 19 is provided on the connecting member 11 to cooperate with the slot 14; the insert block 19 can be integrally formed with the connecting member 11, and the insert block 19 cooperates with the slot 14 to further improve the structural strength of the connection between the connecting member 11 and the mounting seat 5, and realize multi-point connection between the connecting member 11 and the mounting seat 5, thereby improving the stability of the connecting member 11 and the cutting blade 4 on the mounting seat 5. At the same time, the connecting member 11 can also play a good shielding role on the slot 14 to prevent foreign matter from entering the slot 14, thereby facilitating the subsequent assembly and replacement of the cutting blade 4 and the connecting member 11.

[0036] Optionally, the cutting blade 4 and the reinforcing plate 8 can also be integrally formed with the connecting piece 11 to improve the overall structural strength of the cutting blade 4. A through hole for the fixing bolt 9 to pass through can also be provided on the plug block 19 to achieve multi-point connection between the connecting piece 11 and the mounting seat 5, thereby improving the structural strength of the connection between the connecting piece 11 and the mounting seat 5. The connecting piece 11 and the cutting blade 4 can be installed and fixed using only one fixing bolt 9, which is easy to operate.

[0037] Optionally, multiple cutting blades 4 are spirally arranged, and the mounting seat 5 is spirally arranged on the rotating shaft 3 corresponding to the cutting blade 4; compared with cutting blades 4 of other shapes, the spirally arranged cutting blade 4 is conducive to driving the sludge to one side of the sludge suction pipe 2, which is conducive to the sludge suction pipe 2 to absorb the sludge faster and improve the sludge extraction efficiency.

[0038] The above-mentioned mounting seats 5 are connected by guide plates 7, and the mud suction pipe 2 is set corresponding to the guide plates 7. Both ends of the guide plates 7 can be welded and fixed on the mounting seats 5. The guide plates 7 can also be set in a spiral shape and welded and fixed to the rotating shaft. The various mounting seats 5 are connected by using the guide plates 7. A structure similar to a conveying screw can be formed on the entire rotating shaft 3 to realize the transportation and transmission of sludge and accelerate the movement of sludge to the mud suction pipe 2. By setting the mud suction pipe corresponding to the guide plates, it is beneficial to further improve the sludge extraction effect and extraction efficiency of the mud suction pipe 2.

[0039] One end of the cutting blade 4 is mounted on the mounting seat 5 via a connector 11, and the other end is provided with a bent portion 10. During the rotation of the rotating shaft 3, the cutting blade 4 can crush the sludge to facilitate the extraction of the sludge by the sludge suction pipe 2, and the bent portion 10 can shovel up the sludge on the bottom of the water, which is beneficial to improve the stirring effect of the cutting blade 4 on the sludge, ensuring that most of the sludge on the bottom of the water can be crushed and then extracted through the sludge suction pipe, thereby improving the dredging effect of the dredging device.

[0040] The driving assembly 6 includes a driving motor disposed on the cover body 1 , and the output end of the driving motor can be directly connected to the rotating shaft 3 , or can be connected to the rotating shaft 3 through a transmission mechanism, so as to drive the rotating shaft 3 to rotate.

[0041] Optionally, a transmission box for installing a transmission mechanism can be provided on the cover body 1, and a transmission shaft is rotatably installed in the transmission box. One end of the transmission shaft is connected to the output end of the driving motor to realize rotation, and the other end is provided with a driving gear. The rotating shaft 3 is rotatably installed on the transmission box through a bearing, and one end of the rotating shaft 3 extending into the transmission box is provided with a driven gear that cooperates with the driving gear. The driving gear and the driven gear cooperate to realize the driving rotation of the rotating shaft 3 by the transmission shaft. Those skilled in the art can also choose other driving methods according to actual needs, as long as the driving component can drive the rotating shaft 3 to rotate, which will not be repeated here.

[0042] In an optional embodiment, a sealing gasket 15 can be arranged in the assembly groove 20, with one side of the sealing gasket 15 supporting the connecting piece 11 and the other side supporting the mounting seat 5. A mounting hole 16 cooperating with the fixing bolt 9 is provided on the sealing gasket 15 at a position corresponding to the fixing bolt 9; an annular groove 21 for assembling the sealing gasket 15 can be provided at a position corresponding to the assembly groove 20 on the connecting piece 11, and the annular groove 21 is connected to the assembly groove 20. A positioning ring 13 for limiting the movement of the sealing gasket 15 can also be provided at a position below the bolt hole 12 on the mounting seat 5. The positioning ring 13 can be welded and fixed on the mounting seat. The limiting effect of the annular groove 21 and the positioning ring 13 on the sealing gasket 15, and the cooperation effect of the fixing bolt 9 and the mounting hole 16 can ensure that the sealing gasket 15 plays a certain sealing role at the connection between the connecting piece 11 and the mounting seat 5, reduce the entry of sludge, prevent sludge and other foreign matter from clogging the assembly groove and affecting the disassembly of the connecting piece, and ensure that the cutting blade of this dredging device can be replaced conveniently and quickly.

[0043] Optionally, the sealing gasket 15 can be made of rubber material, and the mounting hole 16 can be interference fit with the fixing bolt 9. The elastic deformation of the sealing gasket 15 can play a certain sealing role on the fitting point between the threaded hole and the fixing bolt 9, thereby preventing water from entering the bolt hole from the through hole of the connecting piece and reducing the possibility of rusting of the fixing bolt 9; in the actual assembly process, the operator can first install and fix the sealing gasket 15 on the connecting piece 11 through the fixing bolt 9, and then install and fix the connecting piece 11 on the mounting seat 5, and use the sealing gasket 15 to seal the gap between the connecting piece 11 and the mounting seat 5, and between the fixing bolt 9 and the bolt hole 12, to prevent water from entering the above-mentioned gaps, thereby reducing the possibility of rusting of the fixing bolt 9 and the bolt hole 12, and further reducing the difficulty of maintenance and replacement of the cutting blade after use.

[0044] The present invention has a simple structure and is easy to maintain and use. By arranging a cutting blade on the rotating shaft, the underwater sludge can be crushed and stirred, which is convenient for the sludge suction pipe to quickly extract the underwater sludge, which is beneficial to improving the dredging effect and dredging efficiency of the dredging device. By arranging the cutting blade and the mounting seat in a spiral shape and connecting each mounting seat through a guide plate, a spiral conveying structure can be formed on the rotating shaft. When the rotating shaft rotates, the crushed sludge can be driven to move toward the sludge suction pipe, which is convenient for the sludge suction pipe to quickly extract the sludge in front of the cover body. By using a connecting piece to install and fix the cutting blade, not only the stability of the cutting blade on the mounting seat can be improved, but also the disassembly of the cutting blade is convenient, which reduces the difficulty of use and maintenance of the dredging device.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dredging device for water conservancy projects, characterized in that: It comprises a cover body (1), one side of the cover body (1) is provided with an opening for collecting sludge, the other side is provided with a sludge suction mechanism, and the side of the cover body (1) corresponding to the opening is provided with a stirring mechanism; The mud suction mechanism comprises a mud suction pipe (2) arranged on the cover body (1), and the mud suction pipe (2) is connected to the cover body (1); The stirring mechanism comprises a rotating shaft (3) arranged on the cover body (1), and a cutting blade (4) arranged on the rotating shaft (3); at least two cutting blades (4) are arranged at intervals along the length direction of the rotating shaft (3); a mounting seat (5) for mounting the cutting blade (4) is arranged on the rotating shaft (3); and a driving assembly (6) for driving the rotating shaft (3) to rotate is arranged on the cover body (1); a connecting piece (11) matching with the mounting seat (5) is arranged on the cutting blade (4); and an end of the connecting piece (11) facing the mounting seat (5) is provided with a mounting groove (11) matching with the mounting seat (5). 20), the other end of which is connected to the cutting blade (4); a fixing bolt (9) is provided at a position corresponding to the assembly groove (20) on the connecting member (11), and a bolt hole (12) matching the fixing bolt (9) is provided on the mounting seat (5); the cutting blade (4) is provided with a plurality of spirals, the mounting seat (5) is provided on the rotating shaft (3) in a spiral shape corresponding to the cutting blade (4), the mounting seats (5) are connected via a spiral guide plate (7), and the mud suction pipe (2) is provided in correspondence with the guide plate (7); a fixing bolt (9) is provided at a position corresponding to the assembly groove (20) on the connecting member (11), and a bolt hole (12) matching the fixing bolt (9) is provided on the mounting seat (5); a plurality of spirals are provided on the cutting blade (4), the mounting seat (5) is provided on the rotating shaft (3) in a spiral shape corresponding to the cutting blade (4), the mounting seats (5) are connected via a spiral guide plate (7), and the mud suction pipe (2) is provided in correspondence with the guide plate (7); a fixing bolt (9) is provided at a position corresponding to the assembly groove (20) on the connecting member (11), and a fixing bolt (9) is provided on the mounting seat (5); The plug block (19) is provided on the mounting seat (5) with a slot (14) matching with the plug block (19); one end of the plug block (19) is arranged on the connecting member (11) and the other end extends into the slot (14); a sealing gasket (15) is arranged in the assembly groove (20); one side of the sealing gasket (15) supports the connecting member (11) and the other side supports the mounting seat (5); a mounting hole (16) matching with the fixing bolt (9) is provided on the sealing gasket (15) at a position corresponding to the fixing bolt (9); a hole for assembling the sealing gasket is provided at a position corresponding to the assembly groove (20) on the connecting member (11). The annular groove (21) of the mounting seat (15) is connected to the mounting groove (20). A positioning ring (13) for limiting the movement of the sealing gasket (15) is provided below the bolt hole (12) on the mounting seat (5). The positioning ring (13) is fixed on the mounting seat. The annular groove (21) and the positioning ring (13) limit the position of the sealing gasket (15), and the fixing bolt (9) cooperates with the mounting hole (16) to ensure that the sealing gasket (15) seals the connection between the connecting piece (11) and the mounting seat (5) to reduce the entry of sludge.

2. A silt removal device for water conservancy projects according to claim 1, characterized in that: The cutting blade (4) is connected to the connecting piece (11) via a reinforcing plate (8).

3. A silt removal device for water conservancy projects according to claim 1, characterized in that: One end of the cutting blade (4) is connected to a connecting piece (11), and the other end is provided with a bending portion (10).

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