Hydropower station reservoir area dredging device and dredging equipment

Abstract

The application relates to a water power station reservoir area dredging device and a dredging equipment. The device comprises a support, a silt crushing assembly and a sand discharging assembly. The silt crushing assembly comprises a first driving element and a supporting cylinder, the supporting cylinder is provided with a containing cavity, the cylinder wall of the supporting cylinder is provided with a sand inlet hole, the sand inlet hole is communicated with the containing cavity, the outer wall of the supporting cylinder is provided with a silt crushing element, and the supporting cylinder drives the silt crushing element to rotate under the drive of the first driving element. The sand discharging assembly comprises a suction head and a sand discharging element, the suction head is contained in the containing cavity, the sand discharging element is communicated with the suction head, and the suction head sucks the sand entering through the sand inlet hole under the drive of the sand discharging element. The cylinder wall of the supporting cylinder is provided with a sand inlet hole, the sand inlet hole can intercept the sand with relatively large particles, the particle size of the sand sucked by the suction head is reduced, in addition, the suction head is contained in the containing cavity, so that the suction head is in the center of the stirred silt, the concentration of the sand in the silt water sucked by the suction head is higher, the sand sucking efficiency of the sand discharging element is improved, and the dredging efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, and in particular to dredging devices and equipment for hydropower station reservoirs. Background Technology

[0002] Hydropower stations typically consist of an upper reservoir, a powerhouse, and a lower reservoir. If the water flow environment is predominantly sediment-laden, siltation is a common problem in the reservoir area after a period of operation. Current technology often uses dredging equipment to remove silt from the reservoir; however, existing dredging equipment for hydropower stations suffers from low efficiency, affecting the safe and stable operation of the power station. Summary of the Invention

[0003] Therefore, it is necessary to address the technical problem that existing dredging devices have low dredging efficiency when treating silt in hydropower station reservoirs, which affects the safe and stable operation of hydropower stations, and to provide a dredging device for hydropower station reservoirs.

[0004] A dredging device for a hydropower station reservoir, comprising:

[0005] support;

[0006] The silt-crushing assembly includes a first driving member and a support cylinder. The first driving member is connected to the support cylinder and the bracket. The support cylinder has a receiving cavity. The cylinder wall of the support cylinder is provided with a sand inlet hole, which communicates with the receiving cavity. The outer wall of the support cylinder is provided with a silt-crushing component. The support cylinder is configured to drive the silt-crushing component to rotate under the drive of the first driving member, so as to crush the silt.

[0007] The sand discharge assembly includes a suction head and a sand discharge component. The suction head is housed in the receiving cavity, and the sand discharge component is connected to the bracket. The sand discharge component extends partially into the receiving cavity and communicates with the suction head. The suction head is configured to suction sand entering through the sand inlet hole under the drive of the sand discharge component.

[0008] In one embodiment, there are multiple sand inlet holes, which are spaced apart circumferentially around the support cylinder.

[0009] In one embodiment, the support cylinder includes a plurality of grid bars, each of which is evenly spaced around the circumference of the support cylinder, each of which forms part of the cavity wall of the receiving cavity, and the sand inlet hole is formed between adjacent grid bars.

[0010] In one embodiment, the suction head is provided with a plurality of spaced-apart filter holes, the size of which is smaller than the size of the sand inlet hole.

[0011] In one embodiment, the suction head is spherical.

[0012] In one embodiment, the hydropower station reservoir dredging device further includes a jet assembly, which includes a jet element and a nozzle. The jet element is used to generate jet fluid, and the nozzle is disposed on one side of the support cylinder and connected to the outlet of the jet element, and is used to spray the jet fluid generated by the jet element through the nozzle.

[0013] In one embodiment, the nozzle outlet faces the sand inlet.

[0014] In one embodiment, the jet assembly further includes a connecting rod and a second driving member, the second driving member being connected to the bracket, the connecting rod being connected to the second driving member and to the nozzle, the second driving member being used to drive the connecting rod to move so as to move the nozzle closer to or further away from the support cylinder.

[0015] In one embodiment, the sludge-breaking assembly further includes a first bevel gear and a second bevel gear. The first bevel gear is connected to the first driving member, and the second bevel gear is connected to the end of the support cylinder away from the sludge-breaking assembly and meshes with the first bevel gear. The first driving member is used to drive the first bevel gear to rotate, so as to drive the second bevel gear to drive the support cylinder to rotate.

[0016] The present invention also provides a dredging device that can solve at least one of the above-mentioned technical problems.

[0017] A dredging device includes the above-mentioned hydropower station reservoir dredging device, wherein there are multiple hydropower station reservoir dredging devices, and the multiple hydropower station reservoir dredging devices are arranged at intervals.

[0018] Beneficial effects:

[0019] The hydropower station reservoir dredging device provided in this embodiment of the invention includes a support frame, a silt-breaking component, and a sand-discharging component. The silt-breaking component includes a first driving member and a support cylinder. The first driving member is connected to the support cylinder and the support frame. The support cylinder has a receiving cavity. The cylinder wall of the support cylinder is provided with a sand inlet hole, which communicates with the receiving cavity. The outer wall of the support cylinder is provided with silt-breaking components. The support cylinder is configured to drive the silt-breaking components to rotate under the drive of the first driving member, so as to break up the silt. The sand-discharging component includes a suction head and a sand-discharging component. The suction head is housed in the receiving cavity. The sand-discharging component is connected to the support frame, and part of the sand-discharging component extends into the receiving cavity and communicates with the suction head. The suction head is configured to suction the silt entering through the sand inlet hole under the drive of the sand-discharging component. In this application, the first driving component drives the support cylinder to rotate, which in turn drives the silt-breaking component to rotate, thereby breaking up the silt at the bottom of the water. Under the action of water flow, the broken silt is stirred up. The support cylinder has sand inlet holes on its wall, which can intercept larger particles of silt, thereby reducing the particle size of the silt sucked by the suction head and improving the efficiency of the sand-discharging component in sucking up silt. In addition, the suction head is housed in the receiving cavity, which places the suction head in the center of the stirred-up silt, thereby increasing the concentration of silt in the mud water sucked up by the suction head, further improving the efficiency of the sand-discharging component in sucking up silt and improving the dredging efficiency.

[0020] The present invention also provides a dredging device, including the aforementioned hydropower station reservoir dredging device, wherein there are multiple hydropower station reservoir dredging devices, and each hydropower station reservoir dredging device is arranged at intervals. This dredging device can achieve at least one of the aforementioned technical effects. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a hydropower station reservoir dredging device provided in an embodiment of the present invention.

[0022] Figure 2 This is a front view of a hydropower station reservoir dredging device provided in an embodiment of the present invention.

[0023] Figure 3 This is a partial schematic diagram of a dredging device provided in an embodiment of the present invention.

[0024] Figure 4 for Figure 3 Enlarged view in the image.

[0025] Figure 5 This is a partial schematic diagram of the silt-breaking component in a hydropower station reservoir dredging device provided in an embodiment of the present invention.

[0026] Icon labels:

[0027] 100-Bracket; 200-Silt-breaking assembly; 210-First drive component; 220-Support cylinder; 221-Receiving cavity; 222-Sand inlet hole; 223-Grid bar; 224-Base plate; 225-Connecting ring; 230-Silt-breaking component; 231-Drilling blade; 232-Silt-breaking blade; 240-First bevel gear; 250-Second bevel gear; 260-Bearing; 300-Sand discharge assembly; 310-Suction head; 311-Filter hole; 320-Sand discharge component; 321-Sand discharge pump; 322-First sand discharge pipe; 323-Second sand discharge pipe; 400-Jet assembly; 410-Jet component; 411-Jet pump; 412-Jet pipe; 413-Water inlet pipe; 420-Nozzle; 430-Connecting rod; 440-Second drive component. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a hydropower station reservoir dredging device provided in an embodiment of the present invention. Figure 2This is a front view of a hydropower station reservoir dredging device according to an embodiment of the present invention. The hydropower station reservoir dredging device provided in this embodiment includes a support 100, a silt-breaking component 200, and a sand-discharging component 300. The silt-breaking component 200 includes a first driving member 210 and a support cylinder 220. The first driving member 210 is connected to the support cylinder 220 and the support 100. The support cylinder 220 has a receiving cavity 221, and the cylinder wall of the support cylinder 220 has a sand inlet hole 222 communicating with the receiving cavity 221. The outer wall of the support cylinder 220 is provided with silt-breaking components 200. 30. The support cylinder 220 is configured to drive the crushing component 230 to rotate under the drive of the first driving component 210, so as to crush the silt; the sand discharge assembly 300 includes a suction head 310 and a sand discharge component 320. The suction head 310 is housed in the receiving cavity 221, and the sand discharge component 320 is connected to the bracket 100. The sand discharge component 320 extends into the receiving cavity 221 and communicates with the suction head 310. The suction head 310 is configured to suck up the mud and sand entering through the sand inlet hole 222 under the drive of the sand discharge component 320.

[0035] Specifically, the hydropower station reservoir dredging device in this application is used to clean the silt in the hydropower station reservoir area. In this application, the first driving member 210 drives the support cylinder 220 to rotate around the axial direction, so that the support cylinder 220 drives the silt crushing member 230 to rotate, thereby breaking up the silt at the bottom of the water. Under the action of water flow, the crushed silt is stirred up. The support cylinder 220 has sand inlet holes 222 on its cylinder wall, which can intercept larger particles of silt, thereby reducing the particle size of the silt sucked by the suction head 310 and improving the efficiency of the sand discharge member 320 in sucking up silt. In addition, the suction head 310 is housed in the receiving cavity 221, so that the suction head 310 is in the center of the stirred-up silt, thereby making the concentration of silt in the mud water sucked by the suction head 310 higher, and further improving the efficiency of the sand discharge member 320 in sucking up silt, thus improving the dredging efficiency.

[0036] It should be noted that during the dredging process of the hydropower station reservoir, the silt-breaking component 230, during its rotation, can break up the silt and carry it up under the action of the water flow. This results in the water flow near the support cylinder 220 being mixed with a large amount of silt, i.e., muddy water. Then, under the action of the sand-discharging component 320, the suction head 310 sucks up the muddy water mixed with a large amount of silt, thereby achieving dredging. In this embodiment, the silt accumulated in the reservoir area is being cleaned.

[0037] Furthermore, the sand discharge component 320 includes a first sand discharge pipe 322, a second sand discharge pipe 323, and a sand discharge pump 321. Both the first sand discharge pipe 322 and the second sand discharge pipe 323 are connected to the sand discharge pump 321. The end of the first sand discharge pipe 322 away from the sand discharge pump 321 extends into the receiving cavity 221 and is connected to the suction head 310. The sand discharge pump 321 is used to draw mud and water through the first sand discharge pipe 322 and the suction head 310, and spray the mud and sand onto the bank through the second sand discharge pipe 323 for discharge and cleaning, thereby achieving dredging.

[0038] See Figure 1 and Figure 2 In one embodiment, there are multiple sand inlet holes 222, which are spaced apart around the circumference of the support cylinder 220. This improves the efficiency of the mud and sand crushed by the silt-breaking component 230 entering the receiving cavity 221 under the action of water flow, ensuring the mud and sand content in the mud and water sucked by the suction head 310, thereby improving the dredging efficiency.

[0039] See Figure 1 and Figure 2 In one embodiment, the support cylinder 220 includes a plurality of grid bars 223, each grid bar 223 being evenly spaced around the circumference of the support cylinder 220. Each grid bar 223 forms part of the cavity wall of the receiving cavity 221, and sand inlet holes 222 are formed between adjacent grid bars 223. Each grid bar 223 extends axially along the support cylinder 220, and each sand inlet hole 222 is an elongated hole, evenly spaced around the axial direction of the support cylinder 220.

[0040] See Figure 1 and Figure 2 In one embodiment, the silt-breaking component 230 includes a drilling blade 231, which protrudes from one side of the support cylinder 220 along its axial direction and is used to drill into the silt.

[0041] Specifically, the support cylinder 220 also includes a base plate 224. The side of each grid bar 223 furthest from the first driving member 210 is connected to the base plate 224. The base plate 224 forms part of the cavity wall of the receiving cavity 221. The drilling blade 231 is mounted on the base plate 224 and extends away from the base plate 224, allowing it to penetrate into the silt. During the axial rotation of the support cylinder 220 driven by the first driving member 210, the support cylinder 220 can drive the drilling blade 231 to rotate, stirring up the silt. Furthermore, there are multiple drilling blades 231, evenly spaced around the axial direction of the support cylinder 220. The drilling blades 231 are made of stainless steel.

[0042] See Figure 1 and Figure 2In one embodiment, the silt-breaking component 230 further includes a silt-breaking blade 232, which protrudes from the side wall of the support cylinder 220 to break up larger particles of mud and sand after the drilling blade 231 stirs up the silt, thereby facilitating the suction head 310 to draw in the mud and improving the efficiency of the sand-discharging component 320 in drawing in mud and sand.

[0043] Furthermore, there are multiple silt-breaking blades 232, which are mounted on the grid bars 223, and each grid bar 223 is equipped with multiple silt-breaking blades 232 spaced apart along the axial direction of the support cylinder 220. The blades 232 are made of high-strength stainless steel and have a hydraulically streamlined blade shape.

[0044] See Figure 1 and Figure 2 In one embodiment, the suction head 310 is provided with a plurality of spaced-apart filter holes 311. The size of the filter holes 311 is smaller than the size of the sand inlet holes 222. That is, each sand inlet hole 222 on the support cylinder 220 acts as a primary filter for larger mud particles, and each filter hole 311 acts as a secondary filter for larger mud particles. This further reduces the size of the mud and sand sucked in by the suction head 310 and ensures that large stones do not enter the sand discharge pump 321, thereby improving the sand discharge efficiency of the sand discharge pump 321. Preferably, the diameter of the filter holes 311 is 10mm-15mm.

[0045] See Figure 1 and Figure 2 In one embodiment, the suction head 310 is spherical, thereby increasing the contact area between the suction head 310 and the sediment, and increasing the number of filter holes 311, thereby increasing the efficiency of the suction head 310 in suctioning sediment.

[0046] See Figure 1 , Figure 2 , Figure 3 class Figure 4 , Figure 3 This is a partial schematic diagram of a dredging device provided in an embodiment of the present invention. Figure 4 for Figure 3 Enlarged view in the figure. In one embodiment, the hydropower station reservoir dredging device further includes a jet assembly 400, which includes a jet element 410 and a nozzle 420. The jet element 410 is used to generate jet fluid, and the nozzle 420 is disposed on one side of the support cylinder 220 and connected to the outlet of the jet element 410, and is used to spray the jet fluid generated by the jet element 410 through the nozzle 420.

[0047] Specifically, the jetting component 410 enables the nozzle 420 to spray jet fluid, thereby breaking up the mud lumps stirred up by the silt-breaking component 230, reducing the size of the mud lumps, making it easier for the suction head 310 to suck up the mud and sand. At the same time, it can also stir the water flow, making it easier to stir up the mud and sand, thereby increasing the mud and sand content in the mud and water and improving the dredging efficiency.

[0048] See Figure 3 and Figure 4 In one embodiment, the nozzle 420 outlet faces the sand inlet 222, thereby reducing the size of the mud block to be sucked into the receiving cavity 221 and cleaning the sand inlet 222 and the filter hole 311, preventing the sand inlet 222 and the filter hole 311 from becoming clogged, and improving the sand discharge efficiency of the sand discharge pump 321.

[0049] Furthermore, the jetting component 410 includes an inlet pipe 413, a jetting pipe 412, and a jetting pump 411. Both the inlet pipe 413 and the jetting pipe 412 are connected to the jetting pump 411. The end of the jetting pipe 412 away from the jetting pump 411 is connected to the nozzle 420. The inlet pipe 413 is located on the side away from the support cylinder 220, which facilitates the inlet pipe 413 to draw in muddy water with a low mud and sand content for spraying out from the nozzle 420.

[0050] See Figure 3 and Figure 4 In one embodiment, the jet assembly 400 further includes a connecting rod 430 and a second driving member 440. The second driving member 440 is connected to the bracket 100, and the connecting rod 430 is connected to the second driving member 440 and to the nozzle 420. The second driving member 440 is used to drive the connecting rod 430 to move, so as to drive the nozzle 420 to move closer to or further away from the support cylinder 220, thereby adjusting the range and intensity of the high-pressure fluid sprayed by the nozzle 420 and improving the adaptability of the hydropower station reservoir dredging device.

[0051] Furthermore, the second drive member 440 can be a combination of a motor and a lead screw assembly. In other embodiments, the second drive member 440 can also be other components, as long as it can enable the connecting rod 430 to drive the nozzle 420 to move closer to or further away from the support cylinder 220.

[0052] See Figure 1 , Figure 4 and Figure 5 , Figure 5This is a partial schematic diagram of a silt-breaking component in a hydropower station reservoir dredging device according to an embodiment of the present invention. In one embodiment, the silt-breaking component 200 further includes a first bevel gear 240 and a second bevel gear 250. The first bevel gear 240 is connected to a first driving member 210, and the second bevel gear 250 is connected to the end of the support cylinder 220 away from the silt-breaking component 230 and meshes with the first bevel gear 240. The first driving member 210 is used to drive the first bevel gear 240 to rotate, so as to drive the second bevel gear 250 to drive the support cylinder 220 to rotate.

[0053] Specifically, the axis of the second bevel gear 250 coincides with the axis of the support cylinder 220, the first sand-passing pipe 322 passes through the second bevel gear 250, and the axis of the first bevel gear 240 is perpendicular to the axis of the second bevel gear 250. Thus, the first drive member 210 drives the first bevel gear 240 to rotate, which in turn drives the second bevel gear 250 to rotate the support cylinder 220 around its own axis, thereby enabling the silt-crushing component 230 to break up the silt. The arrangement of the first bevel gear 240 and the second bevel gear 250 allows the first drive member 210 to be positioned freely and avoid obstacles such as the support cylinder 220 and the first sand-passing pipe 322, improving the adaptability of the dredging equipment. Preferably, the first drive member 210 is a motor.

[0054] Furthermore, the support cylinder 220 also includes a connecting ring 225, one end of which is connected to the second bevel gear 250, and the other end is connected to the end of each grid bar 223 away from the base plate 224. The first row of sand pipes 322 passes through the connecting ring 225 and the second bevel gear 250, and is rotatably connected to the second bevel gear 250 through a bearing 260. Preferably, the first row of sand pipes 322 is a bent pipe.

[0055] This invention also includes a dredging device, comprising the aforementioned hydropower station reservoir dredging device. The number of hydropower station reservoir dredging devices is multiple, and each hydropower station reservoir dredging device is arranged at intervals.

[0056] Specifically, in this application, the first driving component 210 drives the support cylinder 220 to rotate, which in turn drives the silt-crushing component 230 to rotate. This allows the silt at the bottom of the water to be crushed, and the crushed silt is stirred up by the water flow. The support cylinder 220 has a sand inlet hole 222 on its wall, which can intercept larger particles of silt, thereby reducing the particle size of the silt sucked by the suction head 310 and improving the efficiency of the sand discharge component 320 in sucking up silt. In addition, the suction head 310 is housed in the receiving cavity 221, which places the suction head 310 in the center of the stirred-up silt, resulting in a higher concentration of silt in the mud water sucked up by the suction head 310. This further improves the efficiency of the sand discharge component 320 in sucking up silt and enhances the dredging efficiency of the dredging equipment.

[0057] Furthermore, the dredging equipment also includes an outer shell with an internal mounting cavity. The outer shell is constructed as a support 100, and the dredging devices for each hydropower station reservoir are housed in the mounting cavity. The dredging fragments 230 and the nozzles 420 extend out of the mounting cavity and are located at the bottom of the outer shell.

[0058] Furthermore, the dredging devices for each hydropower station reservoir are evenly spaced along the extension direction of the outer casing. The jet pipe 412 extends along the same direction, and the nozzles 420 of each dredging device are connected to the jet pipe 412. This means that each dredging device shares a single jet pump 411 and jet pipe 412. The connecting rod 430 extends along the outer casing and connects to each nozzle 420; thus, each dredging device shares a single connecting rod 430, reducing the cost of the dredging equipment and simplifying its structure. Additionally, the dredging equipment is equipped with a position measuring instrument, which can intelligently test the depth and location of sediment accumulation at the bottom of the water, facilitating dredging operations.

[0059] When the dredging equipment operates in the siltation area, the support cylinder 220 drills into the silt layer. The silt-breaking components 230 around the support cylinder 220 crush the silt clumps, which, under the powerful suction of the sand discharge pump 321, enter the receiving cavity 221 through the sand inlet 222 and are then pumped out by the sand discharge pump 321. Simultaneously, the jet pump 411 draws in water with low silt content from the upper layer of the reservoir and sprays a high-speed water jet into the support cylinder 220, breaking up large silt clumps in the receiving cavity 221 and ensuring a flowing water flow around the support cylinder 220. The sand inlet 222 and the filter holes 311 on the suction head 310 effectively prevent large stones and large silt particles from entering the sand discharge pump 321. The positioning instrument installed on the dredging equipment can intelligently test the siltation depth and location within the reservoir. The sand discharge pump 321 sprays the sucked-in slurry onto the bank, achieving dredging of the reservoir area. This invention patent has a simple structure, reliable technology, is easy to implement, has broad application prospects, and great economic benefits.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A dredging device for a hydropower station reservoir, characterized in that, The hydropower station reservoir dredging device includes: support; The silt-crushing assembly includes a first driving member and a support cylinder. The first driving member is connected to the support cylinder and the bracket. The support cylinder has a receiving cavity. The cylinder wall of the support cylinder is provided with a sand inlet hole, which communicates with the receiving cavity. The outer wall of the support cylinder is provided with a silt-crushing component. The support cylinder is configured to drive the silt-crushing component to rotate under the drive of the first driving member, so as to crush the silt. A sand discharge assembly includes a suction head and a sand discharge component. The suction head is housed in the receiving cavity, and the sand discharge component is connected to the bracket. The sand discharge component extends partially into the receiving cavity and communicates with the suction head. The suction head is configured to suction sand entering through the sand inlet hole under the drive of the sand discharge component. The hydropower station reservoir dredging device also includes a jet assembly, which includes a jet element and a nozzle. The jet element is used to generate jet fluid, and the nozzle is located on one side of the support cylinder and connected to the outlet of the jet element, and is used to spray the jet fluid generated by the jet element through the nozzle; the outlet of the nozzle faces the sand inlet hole. The jet assembly further includes a connecting rod and a second driving member. The second driving member is connected to the bracket, and the connecting rod is connected to the second driving member and to the nozzle. The second driving member is used to drive the connecting rod to move so as to move the nozzle closer to or further away from the support cylinder. The support cylinder includes multiple grid bars, each grid bar being evenly spaced around the circumference of the support cylinder. Each grid bar forms part of the cavity wall of the receiving cavity, and the sand inlet hole is formed between adjacent grid bars. The suction head is provided with multiple spaced filter holes, the size of which is smaller than the size of the sand inlet hole.

2. The hydropower station reservoir dredging device according to claim 1, characterized in that, The number of sand inlet holes is multiple, and they are spaced apart around the circumference of the support cylinder.

3. The hydropower station reservoir dredging device according to claim 1, characterized in that, The suction head is spherical.

4. The hydropower station reservoir dredging device according to any one of claims 1-3, characterized in that, The silt-breaking assembly further includes a first bevel gear and a second bevel gear. The first bevel gear is connected to the first driving member, and the second bevel gear is connected to the end of the support cylinder away from the silt-breaking assembly and meshes with the first bevel gear. The first driving member is used to drive the first bevel gear to rotate, so as to drive the second bevel gear to drive the support cylinder to rotate.

5. A dredging device, characterized in that, The device includes the dredging device for the reservoir area of ​​a hydropower station as described in any one of claims 1-4, wherein there are multiple dredging devices for the reservoir area of ​​the hydropower station, and the dredging devices for the reservoir area of ​​the hydropower station are arranged at intervals.

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