Hydraulic engineering desilting device

Abstract

The invention relates to the technical field of desilting devices, and discloses a hydraulic engineering desilting device which comprises a desilting unit, the desilting unit comprises a desilting machine, and the desilting machine is provided with a silt input end and a silt output end; the unblocking unit comprises a sludge pipe installed at the sludge input end, and a blocking mechanism is arranged in the sludge pipe; the blocking mechanism comprises a bearing frame arranged in the sludge pipe, a bearing on the bearing frame is connected with a second connecting shaft, and the second connecting shaft is rotationally connected with multiple sets of blocking arms through rotating shafts. The blocking arm is obliquely arranged, so that the contact area with sludge and the interception probability can be increased, and the sludge is prevented from entering a subsequent pipeline to cause blockage; in addition, when a large amount of high-compactness sludge is accumulated and blocked at the inlet of the sludge pipe, the blocking arm can be pushed out of the sludge pipe, the situation that the sludge further flows into the pipe to cause more serious blockage is avoided, and the capacity of the desilting device for coping with complex blockage conditions is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of silt clearing devices, and more specifically, to a silt clearing device for a water conservancy project. Background Art

[0002] As a key part of infrastructure construction, water conservancy projects play an irreplaceable role in many fields such as flood control, irrigation, water supply and shipping. Water conservancy facilities such as rivers, lakes and reservoirs are not only the key carriers for water resource storage and allocation, but also an important guarantee for maintaining regional ecological balance. At present, with the passage of time and changes in the natural environment, various water conservancy facilities are generally facing siltation. In the existing dredging process of water conservancy projects, silt suction equipment plays a key role. When using this type of equipment to extract silt, in order to reduce the viscosity of the silt and improve the extraction efficiency, it is usually necessary to inject water into the silt to enhance its fluidity.

[0003] However, in actual operations, the problem of uneven water injection distribution often occurs, making it difficult to fully cover large areas of silt, resulting in some silt areas being unable to be adequately injected with water, causing the silt that has not been sufficiently diluted by water injection to still maintain a relatively high density.

[0004] Specifically, when the extraction nozzle of the sludge suction equipment is close to these areas, the denser sludge will flow into the nozzle, causing blockage. In some cases, if the sludge is mixed with larger lumps, or if some sludge is condensed into lumps due to uneven water injection, these large lumps of sludge will easily get stuck in the extraction nozzle under the influence of water flow, seriously affecting the normal extraction work and greatly reducing the dredging efficiency. Summary of the invention

[0005] The present invention provides a silt removal device for a water conservancy project, which solves the technical problem in the related art that dense silt and large silt are easily blocked at an extraction pipe opening, seriously affecting the normal extraction work and greatly reducing the silt removal efficiency.

[0006] The present invention provides a dredging device for a water conservancy project, comprising a dredging unit, wherein the dredging unit comprises a dredging machine, and the dredging machine is provided with a sludge input end and a sludge output end; a blockage clearing unit, wherein the blockage clearing unit comprises a sludge pipe installed on the sludge input end, and a blocking mechanism is provided in the sludge pipe; the blocking mechanism comprises a supporting frame arranged in the sludge pipe, a bearing on the supporting frame is connected to a second connecting shaft, and a plurality of groups of blocking arms are rotatably connected to the second connecting shaft through a rotating shaft, a plurality of the blocking arms are distributed in a ring shape on the outside of the second connecting shaft, and the initial state of the blocking arms is an inclined setting, and the blocking arms are used to intercept high-density sludge to avoid blockage.

[0007] As a further optimization scheme of the present invention, a connecting frame is installed on the sludge pipe, and a grinding mechanism is arranged around the connecting frame, the grinding mechanism includes a first connecting shaft connected to the connecting frame around a bearing, and a stirring blade is installed on the first connecting shaft. When the stirring blade rotates, the agglomerated sludge is stirred and crushed by the stirring blade, so that the sludge and water are evenly mixed.

[0008] As a further optimization scheme of the present invention, a hydraulic bin is installed around the connecting frame, and a hydraulic inlet and a hydraulic outlet are provided on the hydraulic bin. An impeller is also provided in the hydraulic bin, and the impeller is fixedly connected to the first connecting shaft. The hydraulic inlet and the hydraulic outlet are connected to an external hydraulic pump. When the hydraulic pump is working, the hydraulic oil is controlled to enter from the hydraulic inlet and then be discharged from the hydraulic outlet. When the hydraulic oil enters, the impeller is pushed to drive the stirring blades to rotate.

[0009] As a further optimization scheme of the present invention, the supporting frame is provided with a first bevel gear, a second bevel gear and a third bevel gear, the first bevel gear, the second bevel gear and the third bevel gear are meshingly connected, the first bevel gear is connected to the second connecting shaft, the second bevel gear is installed with a third connecting shaft, the third bevel gear is installed with a fourth connecting shaft, the fourth connecting shaft passes through the supporting frame and extends to the outer surface of the sludge pipe, a motor is provided above the sludge pipe, the output shaft of the motor and the fourth connecting shaft are both installed with a first gear, and the two groups of the first gears are meshingly connected.

[0010] As a further optimization scheme of the present invention, a first crushing blade and two groups of second crushing blades are also provided in the sludge pipe, the first crushing blade is fixedly connected to the fourth connecting shaft, and the two groups of the second crushing blades are fixedly connected to both ends of the third connecting shaft.

[0011] As a further optimization solution of the present invention, a plurality of sliding grooves are further provided in the sludge pipe, and a sliding frame is slidably connected in the sliding groove, and the sliding frame is fixedly connected to the supporting frame.

[0012] As a further optimization solution of the present invention, scrapers are installed at both ends of the sliding frame located in the sliding groove, and the scrapers are arranged at an angle.

[0013] As a further optimization scheme of the present invention, a telescopic mechanism is provided above the sludge pipe, and the telescopic mechanism includes a connecting plate arranged above the sludge pipe, and connecting columns are installed around the connecting plate. A movable plate is also provided on the connecting plate, and the movable plate is slidably connected to the outside of the connecting column. A first hydraulic cylinder is installed on the connecting plate, and the telescopic end of the first hydraulic cylinder is fixedly connected to the movable plate.

[0014] As a further optimization scheme of the present invention, a second hydraulic cylinder is installed on the movable plate, and a sliding shaft is installed at the telescopic end of the second hydraulic cylinder, and the sliding shaft is slidably connected to the inside of the fourth connecting shaft. The sliding shaft passes through the fourth connecting shaft and is installed with a rack column, and the rack column is slidably connected to the inside of the second connecting shaft, and a second gear is installed at one end of the blocking arm close to the second connecting shaft, and the second gear is meshingly connected to the rack column.

[0015] As a further optimization scheme of the present invention, a moving channel for the rack column to slide is opened on the second connecting shaft, and a top plate is installed on the end of the rack column away from the sliding shaft. When the rack column moves up and down in the moving channel, the top plate telescopes with the movement of the rack column to eject the sludge.

[0016] The beneficial effects of the present invention are as follows: the present invention can increase the contact area and interception probability with the sludge by setting the barrier arm at an angle, forming an inclined barrier, making it difficult for high-density sludge to pass directly, thereby intercepting it at the barrier arm to prevent it from entering the subsequent pipeline and causing blockage; in addition, when a large amount of high-density sludge accumulates and blocks the entrance of the sludge pipe, the barrier arm can be pushed out of the sludge pipe to pre-treat the accumulated sludge, thereby preventing the sludge from further pouring into the pipe and causing more serious blockage, greatly improving the ability of the dredging device to cope with complex blockage situations. Secondly, by controlling the barrier arm to swing, the barrier arm is released from contact with the high-density sludge, so that the sludge is separated from the sludge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the blockage clearing unit of the present invention;

[0020] Figure 4 It is a schematic cross-sectional structural diagram of the mincing mechanism of the present invention;

[0021] Figure 5 It is a schematic diagram of a three-dimensional cross-sectional structure of a blockage clearing unit of the present invention;

[0022] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the telescopic mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of a partial three-dimensional structure of the barrier mechanism of the present invention;

[0024] Figure 8 It is a schematic diagram of the structural relationship between the blocking mechanism and the sludge pipe of the present invention;

[0025] Fig. 9 It is a schematic diagram of a three-dimensional cross-sectional structure of the barrier mechanism of the present invention;

[0026] Fig.10 It is a schematic diagram of the partial three-dimensional structure of the sliding shaft, rack column, through groove and third connecting shaft of the present invention.

[0027] In the figure: 100, dredging unit; 110, base; 120, bracket; 130, dredging machine; 140, winding machine; 150, traction rope; 200, clearing unit; 210, sludge pipe; 220, connecting frame; 230, shredder mechanism; 231, first connecting shaft; 232, stirring blade; 233, hydraulic chamber; 234, hydraulic inlet; 235, hydraulic outlet; 236, impeller; 240, blocking mechanism; 241, bearing frame; 242, second connecting shaft; 243, blocking arm; 244, first bevel gear; 24 5. second bevel gear; 246. third connecting shaft; 247. third bevel gear; 248. fourth connecting shaft; 249. motor; 2410. first gear; 2411. first crushing blade; 2412. second crushing blade; 2413. sliding groove; 2414. sliding frame; 250. telescopic mechanism; 251. connecting plate; 252. connecting column; 253. movable plate; 254. first hydraulic cylinder; 255. second hydraulic cylinder; 256. sliding shaft; 257. rack column; 258. second gear; 259. through groove. DETAILED DESCRIPTION

[0028] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0029] according to Figure 1 and Figure 2 As shown, a water conservancy project dredging device comprises:

[0030] The dredging unit 100 includes a base 110, a bracket 120 is installed on the base 110, and a pulley assembly is installed on the bracket 120; the dredging unit 100 also includes a dredging machine 130, the dredging machine 130 is located above the base 110, an opening is opened in the base 110 for the dredging machine 130 to pass through, and a sludge input end and a sludge output end are provided on the dredging machine 130; a winder 140 is installed on the base 110, and a traction rope 150 is wound around the winder 140, one end of the traction rope 150 passes through the pulley assembly and is connected to the dredging machine 130, and the other end of the traction rope 150 is fixedly connected to the roller of the winder 140.

[0031] Among them, the winding machine 140 on the base 110 and the pulley assembly on the bracket 120 cooperate, and the traction rope 150 is used to control the position of the dredging machine 130, so that the dredging machine 130 can perform dredging operations at different water depths and positions, thereby improving the coverage of dredging. For example, in some irregularly shaped rivers or lakes, the dredging machine 130 can be accurately moved to the area that needs dredging according to the actual situation, and its operation flexibility is greatly enhanced compared with the traditional fixed-position dredging equipment.

[0032] It should be understood that the winding machine 140 can achieve precise control over the retracting and releasing operation of the traction rope 150, ensuring that the dredging machine 130 remains stable during the lifting or lowering process, effectively avoiding the problem of reduced dredging efficiency due to equipment shaking, and ensuring high-quality dredging operations. During the dredging process, the dredging machine 130 can be stably located at the target position, efficiently clean the silt, and reduce repeated operations.

[0033] In addition, the opening in the base 110 for the dredging machine 130 to pass through provides great convenience for the installation and operation of the dredging machine 130. The dredging machine 130 can smoothly pass through the opening to reach a suitable dredging position, and during the operation, the opening will not hinder the normal operation of the dredging machine 130.

[0034] according to Figure 2 , Figure 3 and Figure 4 As shown, the blockage clearing unit 200 is arranged on the sludge input end. The blockage clearing unit 200 includes a sludge pipe 210 installed on the sludge input end, a connecting frame 220 is installed on the sludge pipe 210, and a mincing mechanism 230 is arranged around the connecting frame 220; the mincing mechanism 230 includes a first connecting shaft 231 connected to the connecting frame 220 by bearings, and a stirring blade 232 is installed on the first connecting shaft 231. When the stirring blade 232 rotates, the agglomerated sludge is stirred and crushed by the stirring blade 232, so that the sludge and water are evenly mixed.

[0035] It should be noted that the use of hydraulically driven stirring blades 232 to stir and crush the agglomerated sludge can break up the denser sludge blocks, mix the sludge and water more evenly, reduce the overall density and viscosity of the sludge, improve the fluidity of the sludge, facilitate subsequent extraction and transportation, and reduce the possibility of sludge clogging in the pipeline.

[0036] During operation, for sludge with severe agglomeration and high density, the rotation speed and strength of the stirring blades 232 can be increased to ensure effective crushing; for relatively loose sludge, the rotation speed and strength can be appropriately reduced to achieve energy saving while ensuring the dredging effect. This adjustability improves the adaptability of the dredging device to different working conditions and expands its scope of application.

[0037] Specifically, according to Figure 4 As shown, a hydraulic bin 233 is installed around the connecting frame 220, and a hydraulic inlet 234 and a hydraulic outlet 235 are provided on the hydraulic bin 233. An impeller 236 is also provided in the hydraulic bin 233, and the impeller 236 is fixedly connected to the first connecting shaft 231. The hydraulic inlet 234 and the hydraulic outlet 235 are connected to an external hydraulic pump; when the hydraulic pump is working, the hydraulic oil is controlled to enter from the hydraulic inlet 234 and then be discharged from the hydraulic outlet 235; when the hydraulic oil enters, the impeller 236 is pushed to drive the stirring blade 232 to rotate.

[0038] In this embodiment, the hydraulic oil is controlled by an external hydraulic pump to enter the hydraulic chamber 233 from the hydraulic inlet 234, so as to drive the impeller 236 to rotate, thereby driving the first connecting shaft 231 and the stirring blade 232 fixedly connected to the impeller 236 to rotate. This hydraulic drive method realizes efficient energy conversion, and the hydraulic energy can be accurately converted into mechanical energy, providing a stable and strong rotational power for the stirring blade 232. The hydraulic drive has little energy loss in the process of transmitting power, and can more effectively transmit power to the stirring blade 232, ensuring that the stirring blade 232 fully stirs and crushes the agglomerated sludge.

[0039] Among them, by adjusting the flow rate and pressure of the external hydraulic pump, the flow rate and pressure of the hydraulic oil entering the hydraulic chamber 233 can be conveniently controlled, thereby realizing flexible adjustment of the rotation speed of the impeller 236 and the stirring blade 232. When facing sludge of different properties and agglomeration degrees, the rotation speed of the stirring blade 232 can be adjusted according to the actual situation. For loose sludge, the rotation speed can be appropriately reduced to reduce energy consumption; while for sludge with severe agglomeration and high density, the rotation speed can be increased to enhance the crushing effect and improve the dredging efficiency.

[0040] In addition, in different water conservancy project dredging scenarios, the characteristics and distribution of silt may vary greatly. The hydraulically driven stirring blades 232 can be quickly adjusted according to the actual working environment. For example, in some waters with fast water flow or large depth changes, by adjusting the hydraulic parameters, the stirring blades 232 can work normally under different water flow and pressure conditions, ensuring the smooth progress of the dredging operation.

[0041] according to Figure 5 and Figure 7 As shown, a blocking mechanism 240 is provided in the sludge pipe 210, and the blocking mechanism 240 includes a supporting frame 241 arranged in the sludge pipe 210, a second connecting shaft 242 is connected to a bearing on the supporting frame 241, and a plurality of blocking arms 243 are rotatably connected to the second connecting shaft 242 through a rotating shaft, and the plurality of blocking arms 243 are distributed in a ring shape on the outside of the second connecting shaft 242, and the initial state of the blocking arms 243 is an inclined setting, and the blocking arms 243 are used to intercept high-density sludge to avoid blockage.

[0042] Among them, when high-density silt enters the silt pipe 210 with the water flow, the inclined barrier arm 243 can increase the contact area and interception probability with the silt, becoming an inclined barrier, making it difficult for the high-density silt to pass directly, thereby intercepting it at the barrier arm 243, preventing it from entering the subsequent pipeline and causing blockage, thereby ensuring the normal operation of the dredging device and the continuity of the dredging work.

[0043] Specifically, according to Figure 8 , Fig. 9 and Fig.10 As shown, a first bevel gear 244 is provided in the supporting frame 241, and the first bevel gear 244 is fixedly connected to the second connecting shaft 242, the first bevel gear 244 is meshedly connected with the second bevel gear 245, and the third connecting shaft 246 is installed on the second bevel gear 245, the third connecting shaft 246 is connected to the supporting frame 241 by a bearing, the second bevel gear 245 is meshedly connected with the third bevel gear 247, and the fourth connecting shaft 248 is installed on the third bevel gear 247, the fourth connecting shaft 248 passes through the supporting frame 241 and extends to the outer surface of the sludge pipe 210, a motor 249 is provided above the sludge pipe 210, and the output shaft of the motor 249 and the fourth connecting shaft 248 are both installed with a first gear 2410, and the two groups of first gears 2410 are meshedly connected.

[0044] Furthermore, a first crushing blade 2411 and two sets of second crushing blades 2412 are also provided in the sludge pipe 210. The first crushing blade 2411 is fixedly connected to the fourth connecting shaft 248, and the two sets of second crushing blades 2412 are fixedly connected to both ends of the third connecting shaft 246. In this embodiment, the sludge can be crushed by rotating the first crushing blade 2411 and the second crushing blade 2412, so that multiple sets of blades can work simultaneously, and the sludge passing through the blocking arm 243 can be crushed in multiple stages, and larger sludge blocks can be crushed into smaller particles, further refining the sludge, reducing the possibility of sludge deposition and clogging in the pipeline, and improving the dredging efficiency. At the same time, smaller sludge particles are also more convenient for subsequent processing and utilization.

[0045] During operation, the driving motor 249 rotates, so that the two groups of first gears 2410 are meshed and connected, thereby controlling the fourth connecting shaft 248 to rotate; when the fourth connecting shaft 248 rotates, the first crushing blade 2411 is controlled to rotate to crush the sludge; and, while the fourth connecting shaft 248 rotates, the first bevel gear 244, the second bevel gear 245 and the third bevel gear 247 are meshed and connected, thereby driving the second connecting shaft 242 and the third connecting shaft 246 to rotate synchronously, so that the second crushing blade 2412 performs secondary crushing on the sludge in the sludge pipe 210; in addition, the blocking arm 243 rotates synchronously to separate the sludge blocked in the sludge pipe 210, thereby facilitating the discharge of the sludge to the outside, keeping the inner wall of the sludge pipe 210 clean, preventing pipeline blockage, extending the service life of the sludge pipe 210, and reducing maintenance costs.

[0046] It should be understood that a plurality of sliding grooves 2413 are provided in the sludge pipe 210, and a sliding frame 2414 is slidably connected in the sliding groove 2413, and the sliding frame 2414 is fixedly connected to the supporting frame 241, and scrapers are installed at both ends of the sliding frame 2414 located in the sliding groove 2413, and the scrapers are arranged at an angle. When the supporting frame 241 moves in the sludge pipe 210 along with the entire blocking mechanism 240, the sliding frame 2414 will also slide in the sliding groove 2413. The scrapers installed at both ends of the sliding frame 2414 in the sliding groove 2413 can clean the inner wall of the sliding groove 2413 during the sliding process, and effectively scrape off the sludge attached to the inner wall of the sliding groove 2413.

[0047] according to Figure 6 and Fig.10As shown, a telescopic mechanism 250 is provided above the sludge pipe 210, and the telescopic mechanism 250 includes a connecting plate 251 arranged above the sludge pipe 210, and connecting columns 252 are installed around the connecting plate 251, and the connecting column 252 is fixedly connected to the connecting frame 220. A movable plate 253 is also provided on the connecting plate 251, and the movable plate 253 is slidably connected to the outside of the connecting column 252. The movable plate 253 is rotatably connected to the fourth connecting shaft 248 through a bearing, and the motor 249 is installed on the movable plate 253. A first hydraulic cylinder 254 is installed on the connecting plate 251, and the telescopic end of the first hydraulic cylinder 254 is fixedly connected to the movable plate 253.

[0048] It should be understood that when the first hydraulic cylinder 254 is controlled to perform telescopic movement, the movable plate 253 moves up and down, thereby driving the fourth connecting shaft 248 to move up and down, so that the fourth connecting shaft 248 drives the support frame 241 to move up and down inside the sludge pipe 210, thereby pushing the blocking arm 243 out of the sludge pipe 210, thereby facilitating the discharge of blocked sludge.

[0049] Among them, when a large amount of high-density silt accumulates and blocks the entrance of the silt pipe 210, the blocking arm 243 can be pushed out of the silt pipe 210 to pre-treat the accumulated silt to prevent the silt from further flowing into the pipe and causing more serious blockage, which greatly improves the ability of the dredging device to cope with complex blockage situations.

[0050] Specifically, a second hydraulic cylinder 255 is installed on the movable plate 253, and a sliding shaft 256 is installed at the telescopic end of the second hydraulic cylinder 255. The sliding shaft 256 is slidably connected to the inside of the fourth connecting shaft 248. The sliding shaft 256 passes through the fourth connecting shaft 248 and is installed with a rack column 257, and the rack column 257 is slidably connected to the inside of the second connecting shaft 242. A second gear 258 is installed at one end of the blocking arm 243 close to the second connecting shaft 242, and the second gear 258 is meshingly connected to the rack column 257.

[0051] During operation, when the blocking arm 243 is pushed out of the sludge pipe 210, the second hydraulic cylinder 255 is controlled to drive the sliding shaft 256 to move up and down inside the fourth connecting shaft 248, thereby controlling the rack column 257 to move up and down synchronously. The rack column 257 is meshed with the second gear 258 to control the blocking arm 243 to swing, thereby releasing the contact between the blocking arm 243 and the high-density sludge, and separating the sludge from the sludge pipe 210.

[0052] Furthermore, a through slot 259 adapted to the third connecting shaft 246 is provided inside the sliding shaft 256 . The through slot 259 facilitates the sliding shaft 256 to move up and down, thereby avoiding affecting the rotation of the third connecting shaft 246 .

[0053] In other embodiments, a moving channel for the rack column 257 to slide is provided on the second connecting shaft 242, and a top plate is installed at one end of the rack column 257 away from the sliding shaft 256. When the rack column 257 moves up and down in the moving channel, the top plate moves telescopically with the movement of the rack column 257 to eject the sludge. The action of the top plate can eject the sludge accumulated near the blocking arm 243 or in the sludge pipe 210 to avoid excessive accumulation of sludge in some areas. For some stubborn sludge attached to the inner wall of the blocking arm 243 and the sludge pipe 210, the ejection action of the top plate can loosen and discharge it, effectively solving the sludge blockage problem.

[0054] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A dredging device for a water conservancy project, characterized in that: include: A silt removal unit (100), the silt removal unit (100) comprising a silt removal machine (130), the silt removal machine (130) being provided with a silt input end and a silt output end; A blockage clearing unit (200), the blockage clearing unit (200) comprising a sludge pipe (210) installed on a sludge input end, a blocking mechanism (240) being provided in the sludge pipe (210); The blocking mechanism (240) comprises a support frame (241) arranged in the sludge pipe (210); a second connecting shaft (242) is connected to the support frame (241) via a bearing; and a plurality of groups of blocking arms (243) are rotatably connected to the second connecting shaft (242) via a rotating shaft; the plurality of blocking arms (243) are distributed in a ring shape outside the second connecting shaft (242); and the initial state of the blocking arms (243) is an inclined setting; the blocking arms (243) are used to intercept high-density sludge to avoid clogging.

2. A water conservancy project dredging device according to claim 1, characterized in that: A connecting frame (220) is installed on the sludge pipe (210), and a shredding mechanism (230) is arranged around the connecting frame (220). The shredding mechanism (230) comprises a first connecting shaft (231) connected to the connecting frame (220) around the connecting frame by bearings, and a stirring blade (232) is installed on the first connecting shaft (231). When the stirring blade (232) rotates, the agglomerated sludge is stirred and crushed by the stirring blade (232), so that the sludge and water are evenly mixed.

3. A water conservancy project dredging device according to claim 2, characterized in that: A hydraulic chamber (233) is installed around the connecting frame (220), and a hydraulic inlet (234) and a hydraulic outlet (235) are provided on the hydraulic chamber (233). An impeller (236) is also provided in the hydraulic chamber (233), and the impeller (236) is fixedly connected to the first connecting shaft (231). The hydraulic inlet (234) and the hydraulic outlet (235) are connected to an external hydraulic pump. When the hydraulic pump is working, hydraulic oil is controlled to enter from the hydraulic inlet (234) and then be discharged from the hydraulic outlet (235). When the hydraulic oil enters, the impeller (236) is pushed, and the stirring blade (232) is driven to rotate.

4. A water conservancy project dredging device according to claim 1, characterized in that: The support frame (241) is provided with a first bevel gear (244), a second bevel gear (245) and a third bevel gear (247); the first bevel gear (244), the second bevel gear (245) and the third bevel gear (247) are meshingly connected; the first bevel gear (244) is connected to the second connecting shaft (242); the third connecting shaft (246) is mounted on the second bevel gear (245); the fourth connecting shaft (248) is mounted on the third bevel gear (247); the fourth connecting shaft (248) passes through the support frame (241) and extends to the outer surface of the sludge pipe (210); a motor (249) is provided above the sludge pipe (210); the output shaft of the motor (249) and the fourth connecting shaft (248) are both mounted with a first gear (2410); and the two groups of the first gears (2410) are meshingly connected.

5. A water conservancy project dredging device according to claim 4, characterized in that: A first crushing blade (2411) and two groups of second crushing blades (2412) are also provided in the sludge pipe (210); the first crushing blade (2411) is fixedly connected to the fourth connecting shaft (248), and the two groups of the second crushing blades (2412) are fixedly connected to both ends of the third connecting shaft (246).

6. A water conservancy project dredging device according to claim 4, characterized in that: A plurality of sliding grooves (2413) are also provided in the sludge pipe (210), and a sliding frame (2414) is slidably connected in the sliding groove (2413), and the sliding frame (2414) is fixedly connected to the supporting frame (241).

7. A hydraulic engineering dredging device according to claim 6, characterized in that: Scrapers are installed at both ends of the sliding frame (2414) located in the sliding groove (2413), and the scrapers are arranged in an inclined manner.

8. A water conservancy project dredging device according to claim 4, characterized in that: A telescopic mechanism (250) is provided above the sludge pipe (210), and the telescopic mechanism (250) comprises a connecting plate (251) arranged above the sludge pipe (210), and connecting columns (252) are installed around the connecting plate (251), and a movable plate (253) is also provided on the connecting plate (251), and the movable plate (253) is slidably connected to the outside of the connecting column (252), and a first hydraulic cylinder (254) is installed on the connecting plate (251), and the telescopic end of the first hydraulic cylinder (254) is fixedly connected to the movable plate (253).

9. A hydraulic engineering silt removal device according to claim 8, characterized in that: A second hydraulic cylinder (255) is installed on the movable plate (253), and a sliding shaft (256) is installed at the telescopic end of the second hydraulic cylinder (255), and the sliding shaft (256) is slidably connected to the inside of the fourth connecting shaft (248), and the sliding shaft (256) passes through the fourth connecting shaft (248) and is installed with a rack column (257), and the rack column (257) is slidably connected to the inside of the second connecting shaft (242), and a second gear (258) is installed at one end of the blocking arm (243) close to the second connecting shaft (242), and the second gear (258) is meshingly connected with the rack column (257).

10. A water conservancy project dredging device according to claim 9, characterized in that: The second connecting shaft (242) is provided with a moving channel for the rack column (257) to slide, and a top plate is installed at one end of the rack column (257) away from the sliding shaft (256). When the rack column (257) moves up and down in the moving channel, the top plate moves telescopically along with the movement of the rack column (257) to eject the sludge.

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