An efficient dredging device for water conservancy projects

Abstract

The present invention relates to the technical field of water conservancy projects, and discloses an efficient silt removal device for water conservancy projects, including: a hand cylinder and a parts protective shell. Both sides of the parts protective shell are fixedly connected with side plates. One side of the side plate away from the parts protective shell is fixedly connected with a diversion shell. The outer wall of the parts protective shell is fixedly connected with a mud scraping shovel. One side of the parts protective shell away from the mud scraping shovel is fixedly connected with a confluence bin. This efficient silt removal device for water conservancy projects can provide power through the first motor, drive the centrifugal fan to rotate inside the diversion shell by the transmission of the driving bevel gear and the driven bevel gear, suck the external silt into the diversion shell and push it to the confluence bin by the rotation of the main centrifugal fan blades, and push out the silt by the spiral blades, which is convenient for silt removal in relatively remote locations or hydraulic structures with relatively narrow construction environments. It has a relatively small volume, is convenient for transportation, has relatively high convenience, and improves the silt removal efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and specifically to an efficient silt removal device for water conservancy projects. Background Technique

[0002] Water conservancy projects mainly study the basic knowledge and skills in aspects such as engineering hydrology, water conservancy project surveying, hydraulic reinforced concrete, hydraulic structures, engineering drawing, etc., and carry out engineering planning and design, on-site construction, engineering budget, and maintenance of water conservancy equipment in the field of water conservancy projects. For example: building different types of hydraulic structures such as dams, dikes, spillways, sluice gates, channels, aqueducts, raft channels, fishways, etc.

[0003] When carrying out the construction or maintenance of water conservancy projects, it is necessary to remove silt from hydraulic structures such as aqueducts or channels. Most general efficient silt removal devices are large mechanical devices. The use environment of these large mechanical devices is relatively harsh, requiring a relatively wide construction environment and a relatively smooth transportation path, and they cannot remove silt from hydraulic structures located in relatively remote locations or with relatively narrow construction environments. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an efficient silt removal device for water conservancy projects, which solves the problems mentioned in the above background.

[0005] The present invention provides the following technical solutions: An efficient silt removal device for water conservancy projects, comprising: a hand tube and a parts protective shell. Both sides of the parts protective shell are fixedly connected with side plates. One side of the side plate away from the parts protective shell is fixedly connected with a diversion shell. The outer wall of the parts protective shell is fixedly connected with a mud scraping shovel. One side of the parts protective shell away from the mud scraping shovel is fixedly connected with a confluence bin. The inner wall of the side plate is movably connected with a driven shaft. The outer wall of the driven shaft is fixedly sleeved with a driven bevel gear. One side of the side plate away from the diversion shell is fixedly connected with a first motor connecting frame. The inner wall of the first motor connecting frame is fixedly connected with a first motor. The output end of the first motor is fixedly connected with a driving shaft through a coupling. The outer wall of the driving shaft is fixedly sleeved with a driving bevel gear. The outer wall of the driven shaft is fixedly connected with a counterweight flywheel. One side of the side plate close to the counterweight flywheel is fixedly connected with a water distribution bin. One end of the driven shaft away from the driven bevel gear is fixedly connected with a centrifugal fan. One side of the side plate away from the diversion shell is fixedly connected with a second motor connecting frame. The inner wall of the second motor connecting frame is fixedly connected with a second motor. The outer wall of the water distribution bin is fixedly connected with a three-way water guiding pipeline. The output end of the second motor is fixedly connected with a transmission shaft through a coupling. The outer wall of the transmission shaft is fixedly connected with a spiral blade.

[0006] Preferably, rotary seals are provided on the outer walls of the driven shaft and the transmission shaft. The transmission shaft is rotationally connected to the confluence bin through the rotary seal, and the driven shaft is rotationally connected to the side plate through the rotary seal. There are two driven bevel gears, and both driven bevel gears are meshed with the driving bevel gear and are distributed oppositely.

[0007] Preferably, mounting holes are perforated through both sides of the side plate. An inner extension pipe is provided on the side of the flow guide shell away from the counterweight flywheel, and the outer wall of the mounting hole is fixedly connected to the outer wall of the inner extension pipe.

[0008] Preferably, a mud guard is provided on the outer wall of the centrifugal fan. The mud guard is located on one side of the mounting hole. A secondary centrifugal fan blade is integrally connected to the side of the mud guard close to the side plate. A primary centrifugal fan blade is integrally connected to the outer wall of the centrifugal fan, and a reinforcement connection ring is integrally connected to the side of the primary centrifugal fan blade close to the mud guard.

[0009] Preferably, the number of side plates and the number of flow guide shells are both two. Protective filter residue nets are fixedly connected to the inner walls of both flow guide shells. Each side plate, each flow guide shell, and each protective filter residue net form a group, and two groups of side plates, flow guide shells, and protective filter residue nets are distributed oppositely.

[0010] Preferably, scraping teeth are provided on one side of the mud scraper. A mud baffle is provided on the side of the mud scraper away from the scraping teeth, and one side of the mud baffle is fixedly connected to the outer wall of the flow guide shell.

[0011] Preferably, a confluence cover is fixedly sleeved on the outer wall of the confluence bin. A mud guiding port is provided on the surface of the confluence cover, and one end of the confluence cover away from the confluence bin is fixedly connected to one end of the hand tube.

[0012] Preferably, a connection tube is fixedly connected to one end of the hand tube away from the confluence cover. A sludge delivery pipe is installed on the inner wall of the connection tube. An external water pipe is installed at one end of the three-way water guiding pipeline. A limiting ring is fixedly connected to the outer wall of the hand tube. The inner wall of the limiting ring is fixedly connected to the outer wall of the three-way water guiding pipeline. One end of the three-way water guiding pipeline penetrates through the inner wall of the component protection shell and extends to the outer wall of the hand tube.

[0013] Preferably, a holding frame is integrally connected to the outer wall of the hand tube. Receiving holes are perforated through both sides of the holding frame. A flashlight is installed on the inner wall of the receiving hole. An anti-slip sleeve is fixedly sleeved on the outer wall of the holding frame.

[0014] Preferably, a fixed disk is integrally connected to the inner wall of the hand tube. Feeding ports are perforated through both sides of the fixed disk. The end of the transmission shaft away from the second motor is rotationally connected to the inner wall of the fixed disk.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The efficient dredging device for water conservancy projects, through the set hand cylinder, parts protective shell, side plate, diversion shell, mud scraping shovel, confluence bin, driven shaft, driven bevel gear, first motor connecting frame, first motor, driving shaft, driving bevel gear, counterweight flywheel, water diversion bin, centrifugal fan, second motor connecting frame, second motor, three-way water guiding pipe, transmission shaft, spiral blade, main centrifugal fan blade and reinforcement connecting ring, can provide power through the first motor, drive the centrifugal fan to rotate inside the diversion shell by the transmission of the driving bevel gear and the driven bevel gear, suck the external silt into the diversion shell and push it to the confluence bin by the rotation of the main centrifugal fan blade, and push out the silt by the spiral blade, which is convenient for dredging in relatively remote locations or hydraulic structures with relatively narrow construction environments. It is relatively small in volume, convenient for transportation, and has relatively high convenience, improving the dredging efficiency.

[0017] 2. The efficient dredging device for water conservancy projects, through the set counterweight flywheel, water diversion bin, centrifugal fan, three-way water guiding pipe, mud guard plate and auxiliary centrifugal fan blade, can introduce a small amount of tap water to dilute the silt to the side of the centrifugal fan when the centrifugal fan rotates to push some silt with less water and poor fluidity, so as to improve the fluidity of the silt. At the same time, use the counterweight flywheel to increase the mass of the centrifugal fan and improve the inertia of the centrifugal fan, thereby improving the smoothness when the centrifugal fan rotates.

[0018] 3. The efficient dredging device for water conservancy projects, through the set mud scraping shovel, scraping teeth and flashlight, is convenient for scraping and removing the residual silt at the bottom of the hydraulic structure by the mud scraping shovel. At the same time, when scraping some silt with poor fluidity, it can be scraped and guided by the mud scraping shovel, which is convenient for controlling the single - time mud intake amount, and can use the flashlight to illuminate some narrow and low - light spaces, which is convenient for assisting in dredging silt. Description of the Drawings

[0019] Figure 1 is the structural schematic diagram of the present invention;

[0020] Figure 2 is the exploded structural schematic diagram of the present invention;

[0021] Figure 3 is the structural schematic diagram of the connection between the driving bevel gear and the driven bevel gear of the present invention;

[0022] Figure 4 is the exploded structural schematic diagram inside the confluence bin of the present invention;

[0023] Figure 5 is the structural schematic diagram at the position of the auxiliary centrifugal fan blade of the present invention;

[0024] Figure 6 is the side sectional view of the present invention;

[0025] Figure 7This is the upward sectional view of the present invention;

[0026] Figure 8 This is the present invention Figure 7 The enlarged view of part A in the present invention.

[0027] In the figure: 1. Hand tube; 2. Protective shell for components; 3. Side plate; 4. Flow guiding shell; 5. Mud scraping shovel; 6. Confluence bin; 7. Driven shaft; 8. Driven bevel gear; 9. First motor connecting frame; 10. First motor; 11. Driving shaft; 12. Driving bevel gear; 13. Counterweight flywheel; 14. Water distribution bin; 15. Centrifugal fan; 16. Second motor connecting frame; 17. Second motor; 18. Three-way water guiding pipe; 19. Transmission shaft; 20. Screw blade; 21. Mounting hole; 22. Inner extension pipe; 23. Mud guard plate; 24. Sub-centrifugal fan blade; 25. Main centrifugal fan blade; 26. Reinforcing connection ring; 27. Protective filter residue net; 28. Scraping teeth; 29. Confluence cover; 30. Mud guiding port; 31. Connecting tube; 32. Mud conveying pipe; 33. External water pipe; 34. Limit ring; 35. Holding frame; 36. Storage hole; 37. Flashlight; 38. Anti-slip sleeve; 39. Fixed plate. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-8, An efficient dredging device for water conservancy projects, comprising: a hand tube 1 and a component protection shell 2. Both sides of the component protection shell 2 are fixedly connected with side plates 3. One side of the side plate 3 away from the component protection shell 2 is fixedly connected with a diversion shell 4. The outer wall of the component protection shell 2 is fixedly connected with a mud scraping shovel 5. One side of the component protection shell 2 away from the mud scraping shovel 5 is fixedly connected with a confluence bin 6. The inner wall of the side plate 3 is movably connected with a driven shaft 7. The outer wall of the driven shaft 7 is fixedly sleeved with a driven bevel gear 8. One side of the side plate 3 away from the diversion shell 4 is fixedly connected with a first motor connection bracket 9. The inner wall of the first motor connection bracket 9 is fixedly connected with a first motor 10. The output end of the first motor 10 is fixedly connected with a driving shaft 11 through a coupling. The outer wall of the driving shaft 11 is fixedly sleeved with a driving bevel gear 12. The outer wall of the driven shaft 7 is fixedly connected with a counterweight flywheel 13. By using the counterweight flywheel 13 to increase the mass of the centrifugal fan 15 and improve the inertia of the centrifugal fan 15, the smoothness of the centrifugal fan 15 during rotation is improved. One side of the side plate 3 close to the counterweight flywheel 13 is fixedly connected with a water diversion bin 14. One end of the driven shaft 7 away from the driven bevel gear 8 is fixedly connected with a centrifugal fan 15. One side of the side plate 3 away from the diversion shell 4 is fixedly connected with a second motor connection bracket 16. The inner wall of the second motor connection bracket 16 is fixedly connected with a second motor 17. The outer wall of the water diversion bin 14 is fixedly connected with a three-way water guiding pipe 18. The output end of the second motor 17 is fixedly connected with a transmission shaft 19 through a coupling. The outer wall of the transmission shaft 19 is fixedly connected with a spiral blade 20. By setting the hand tube 1, the component protection shell 2, the side plate 3, the diversion shell 4, the mud scraping shovel 5, the confluence bin 6, the driven shaft 7, the driven bevel gear 8, the first motor connection bracket 9, the first motor 10, the driving shaft 11, the driving bevel gear 12, the counterweight flywheel 13, the water diversion bin 14, the centrifugal fan 15, the second motor connection bracket 16, the second motor 17, the three-way water guiding pipe 18, the transmission shaft 19, the spiral blade 20, the main centrifugal fan blade 25 and the reinforcement connection ring 26, power can be provided by the first motor 10, and the centrifugal fan 15 can be driven to rotate inside the diversion shell 4 by the transmission of the driving bevel gear 12 and the driven bevel gear 8. The external silt can be sucked into the diversion shell 4 and pushed to the confluence bin 6 by the rotation of the main centrifugal fan blade 25, and the silt can be pushed out by the spiral blade 20, which is convenient for dredging in relatively remote locations or hydraulic structures with relatively narrow construction environments. It has a relatively small volume, is convenient for transportation, and has relatively high convenience.

[0030] Wherein; rotating seals are provided on the outer walls of the driven shaft 7 and the transmission shaft 19, and the transmission shaft 19 is rotationally connected to the confluence bin 6 through the rotating seal, and the driven shaft 7 is rotationally connected to the side plate 3 through the rotating seal. The number of the driven bevel gears 8 is two, and both of the two driven bevel gears 8 are meshed with the driving bevel gear 12, and the two driven bevel gears 8 are distributed oppositely for convenient transmission.

[0031] Among them; mounting holes 21 are penetrated and opened on both sides of the side plate 3, and an inner extension pipe 22 is provided on one side of the diversion shell 4 away from the counterweight flywheel 13, and the outer wall of the mounting hole 21 is fixedly connected to the outer wall of the inner extension pipe 22, so as to introduce water flow into the diversion shell 4 when absorbing silt.

[0032] Among them; a mud guard 23 is provided on the outer wall of the centrifugal fan 15, and the mud guard 23 is located on one side of the mounting hole 21. A secondary centrifugal fan blade 24 is integrally connected to the side of the mud guard 23 close to the side plate 3, and a main centrifugal fan blade 25 is integrally connected to the outer wall of the centrifugal fan 15. A reinforcing connection ring 26 is integrally connected to the side of the main centrifugal fan blade 25 close to the mud guard 23, and the diameter of the secondary centrifugal fan blade 24 is smaller than that of the main centrifugal fan blade 25. By providing the water diversion bin 14, the centrifugal fan 15, the three-way water diversion pipeline 18, the mud guard 23, and the secondary centrifugal fan blade 24, when the centrifugal fan 15 rotates to push some silt with less water content and poor fluidity, a small amount of tap water can be introduced to the side of the centrifugal fan 15 through the three-way water diversion pipeline 18 to dilute the silt, thereby improving the fluidity of the silt.

[0033] Among them; the number of the side plates 3 and the number of the diversion shells 4 are both two, and a protective slag filter net 27 is fixedly connected to the inner walls of the two diversion shells 4. Each side plate 3, each diversion shell 4, and each protective slag filter net 27 form a group, and the two groups of side plates 3, diversion shells 4, and protective slag filter nets 27 are distributed oppositely, so as to respectively arrange two mud suction chambers on both sides of the device to ensure the balance of the device.

[0034] Among them; a scraping tooth 28 is provided on one side of the mud scraping shovel 5, and a mud baffle is provided on the side of the mud scraping shovel 5 away from the scraping tooth 28, and one side of the mud baffle is fixedly connected to the outer wall of the diversion shell 4. By providing the mud scraping shovel 5 and the scraping tooth 28, it is convenient to use the mud scraping shovel 5 to scrape and remove the silt remaining at the bottom of the hydraulic structure, and at the same time, when scraping some silt with poor fluidity, the mud scraping shovel 5 can be used for scraping and diversion to facilitate the control of the single - time mud intake.

[0035] Among them; a confluence cover 29 is fixedly sleeved on the outer wall of the confluence bin 6, a mud guiding port 30 is opened on the surface of the confluence cover 29, and one end of the confluence cover 29 away from the confluence bin 6 is fixedly connected to one end of the hand tube 1, so as to confluence the silt in the two mud suction chambers for convenient pushing together.

[0036] Among them; one end of the hand tube 1 away from the confluence cover 29 is fixedly connected with a connecting tube 31, and a sludge conveying pipe 32 is installed on the inner wall of the connecting tube 31. One end of the three-way water guiding pipe 18 is installed with an external water pipe 33, and a limiting ring 34 is fixedly connected to the outer wall of the hand tube 1. The inner wall of the limiting ring 34 is fixedly connected to the outer wall of the three-way water guiding pipe 18. One end of the three-way water guiding pipe 18 penetrates through the inner wall of the component protective shell 2 and extends to the outer wall of the hand tube 1, so as to use the three-way water guiding pipe 18 to convey tap water to dilute the sludge and improve the smoothness when the centrifugal fan 15 rotates.

[0037] Among them; the outer wall of the hand tube 1 is integrally connected with a holding frame 35, and receiving holes 36 are formed through both sides of the holding frame 35. A flashlight 37 is installed on the inner wall of the receiving hole 36, and an anti-slip sleeve 38 is fixedly sleeved on the outer wall of the holding frame 35, which can use the flashlight 37 to illuminate some narrow and low-brightness spaces and facilitate the auxiliary cleaning of sludge.

[0038] Among them; a fixed disk 39 is integrally connected to the inner wall of the hand tube 1, and feeding ports are formed through both sides of the fixed disk 39. One end of the transmission shaft 19 away from the second motor 17 is rotatably connected to the inner wall of the fixed disk 39, so as to facilitate holding and improve the flexibility of the device.

[0039] Working principle: When in use, connect the input end of the external water pipe 33 to tap water or other water sources, start the first motor 10 and the second motor 17. The first motor 10 drives the driving shaft 11 to rotate, the driving shaft 11 drives the driving bevel gear 12 to rotate synchronously, the driving bevel gear 12 drives the driven bevel gear 8 to rotate, the driven bevel gear 8 drives the driven shaft 7 to rotate synchronously. When the driven shaft 7 rotates, it drives the centrifugal fan 15 to rotate, and at the same time drives the counterweight flywheel 13 to rotate. When the centrifugal fan 15 rotates, the fluid flow rate around the secondary centrifugal fan blades 24 and the main centrifugal fan blades 25 increases, and the pressure decreases. When the centrifugal fan 15 can rotate stably, place the device into the sludge or use the sludge scraping shovel 5 to scrape the sludge to control the mud intake. The main centrifugal fan blades 25 continuously suck the sludge into the diversion shell 4, and the secondary centrifugal fan blades 24 suck the tap water into the diversion shell 4. Due to the centrifugal force, the main centrifugal fan blades 25 and the secondary centrifugal fan blades 24 respectively throw the sludge and tap water to the surroundings. Since the diameter of the secondary centrifugal fan blades 24 is smaller than that of the main centrifugal fan blades 25, the tap water is thrown by the secondary centrifugal fan blades 24 and then mixed with the sludge by the throwing of the main centrifugal fan blades 25, so that the moisture content of the sludge increases and the fluidity is enhanced. Then the sludge enters the confluence chamber 6 for confluence. At the same time, the second motor 17 drives the transmission shaft 19 to rotate, the transmission shaft 19 drives the spiral blades 20 to rotate, and the spiral blades 20 rotate to push the confluent sludge inside the confluence chamber 6, and push the sludge into the sludge conveying pipe 32 and finally discharge it.

[0040] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient dredging device for water conservancy projects, characterized in that, Including: A flashlight tube (1) and a protective shell for components (2). Both sides of the protective shell for components (2) are fixedly connected with side plates (3). One side of the side plate (3) far away from the protective shell for components (2) is fixedly connected with a diversion shell (4). The outer wall of the protective shell for components (2) is fixedly connected with a mud scraping shovel (5). One side of the protective shell for components (2) far away from the mud scraping shovel (5) is fixedly connected with a confluence bin (6). The inner wall of the side plate (3) is movably connected with a driven shaft (7). The outer wall of the driven shaft (7) is fixedly sleeved with a driven bevel gear (8). One side of the side plate (3) far away from the diversion shell (4) is fixedly connected with a first motor connecting frame (9). The inner wall of the first motor connecting frame (9) is fixedly connected with a first motor (10). The output end of the first motor (10) is fixedly connected with a driving shaft (11) through a coupling. The outer wall of the driving shaft (11) is fixedly sleeved with a driving bevel gear (12). The outer wall of the driven shaft (7) is fixedly connected with a counterweight flywheel (13). One side of the side plate (3) close to the counterweight flywheel (13) is fixedly connected with a water distribution bin (14). One end of the driven shaft (7) far away from the driven bevel gear (8) is fixedly connected with a centrifugal fan (15). One side of the side plate (3) far away from the diversion shell (4) is fixedly connected with a second motor connecting frame (16). The inner wall of the second motor connecting frame (16) is fixedly connected with a second motor (17). The outer wall of the water distribution bin (14) is fixedly connected with a three-way water guiding pipeline (18). The output end of the second motor (17) is fixedly connected with a transmission shaft (19) through a coupling. The outer wall of the transmission shaft (19) is fixedly connected with a spiral blade (20); A mud blocking plate (23) is arranged on the outer wall of the centrifugal fan (15), and the mud blocking plate (23) is located on one side of the mounting hole (21). One side of the mud blocking plate (23) close to the side plate (3) is integrally connected with a secondary centrifugal fan blade (24). The outer wall of the centrifugal fan (15) is integrally connected with a main centrifugal fan blade (25). One side of the main centrifugal fan blade (25) close to the mud blocking plate (23) is integrally connected with a reinforcement connecting ring (26); One side of the mud scraping shovel (5) is provided with scraping teeth (28). One side of the mud scraping shovel (5) far away from the scraping teeth (28) is provided with a mud blocking plate, and one side of the mud blocking plate is fixedly connected with the outer wall of the diversion shell (4); One end of the flashlight tube (1) far away from the confluence cover (29) is fixedly connected with a connecting tube (31). A mud conveying pipe (32) is installed on the inner wall of the connecting tube (31). One end of the three-way water guiding pipeline (18) is installed with an external water pipe (33). The outer wall of the flashlight tube (1) is fixedly connected with a limiting ring (34). The inner wall of the limiting ring (34) is fixedly connected with the outer wall of the three-way water guiding pipeline (18). One end of the three-way water guiding pipeline (18) penetrates through the inner wall of the protective shell for components (2) and extends to the outer wall of the flashlight tube (1).

2. An efficient dredging device for water conservancy projects according to claim 1, characterized in that, The outer walls of the driven shaft (7) and the transmission shaft (19) are both provided with rotary seals, and the transmission shaft (19) is rotationally connected to the confluence bin (6) through the rotary seal, and the driven shaft (7) is rotationally connected to the side plate (3) through the rotary seal. The number of the driven bevel gears (8) is two, and both of the two driven bevel gears (8) are meshed with the driving bevel gear (12), and the two driven bevel gears (8) are distributed oppositely.

3. An efficient dredging device for water conservancy projects according to claim 1, characterized in that, Installation holes (21) are penetrated through both sides of the side plate (3). An inner extension pipe (22) is provided on one side of the diversion shell (4) away from the counterweight flywheel (13), and the outer wall of the installation hole (21) is fixedly connected to the outer wall of the inner extension pipe (22).

4. An efficient dredging device for water conservancy projects according to claim 1, characterized in that, The number of the side plates (3) and the number of the diversion shells (4) are both two. Protective filter residue nets (27) are fixedly connected to the inner walls of both of the two diversion shells (4). Each side plate (3), each diversion shell (4) and each protective filter residue net (27) form a group, and the two groups of side plates (3), diversion shells (4) and protective filter residue nets (27) are distributed oppositely.

5. An efficient dredging device for water conservancy projects according to claim 1, characterized in that, A confluence cover (29) is fixedly sleeved on the outer wall of the confluence bin (6). A mud guiding port (30) is formed on the surface of the confluence cover (29), and one end of the hand tube (1) is fixedly connected to the side of the confluence cover (29) away from the confluence bin (6).

6. An efficient dredging device for water conservancy projects according to claim 1, characterized in that, A holding frame (35) is integrally connected to the outer wall of the hand tube (1). Storage holes (36) are penetrated through both sides of the holding frame (35). A flashlight (37) is installed on the inner wall of the storage hole (36), and an anti-slip sleeve (38) is fixedly sleeved on the outer wall of the holding frame (35).

7. An efficient dredging device for water conservancy projects according to claim 1, characterized in that, A fixed disk (39) is integrally connected to the inner wall of the hand tube (1). Feeding ports are penetrated through both sides of the fixed disk (39). One end of the transmission shaft (19) away from the second motor (17) is rotationally connected to the inner wall of the fixed disk (39).

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