Desilting device for power station dam corridor

Abstract

An embodiment of the present invention proposes a dredging device for a dam gallery of a power station. The dredging device includes a vehicle body, a bucket, a conveying member, and a separation mechanism. The bucket can be flipped on the vehicle body so that the gallery silt can be flipped onto the conveying member by flipping the bucket; the separation mechanism is arranged at one end of the conveying member opposite to the bucket, and the separation mechanism includes a separator, a stirring member, and a flushing member. The separator is used to collect gallery silt, and the stirring member and the flushing member can separate gallery silt. This allows people to separate the gravel and mud in the silt during the process of cleaning the silt in the dam gallery, and it is no longer necessary to transport the cleaned silt to the outside of the river channel for manual separation, which effectively reduces the workload of people in the subsequent processing of the cleaned silt. Therefore, the dredging device has the advantages of high automation and work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of silting in hydropower stations, and in particular to a silting device for a dam gallery of a power station. Background Art

[0002] A hydropower station is a power station that uses the kinetic energy of the strong water flow generated by the water level difference to generate electricity. However, in order to facilitate the staff to repair the inside of the dam, a hydropower station dam corridor is usually set up when building a hydropower station. By providing a passage for the staff to enter the inside of the dam, it is convenient to conduct regular inspections of the main structure of the dam and check whether the dam concrete has cracks, erosion and other damage. However, during the operation of the dam, the water flow will carry fine particles such as silt into the corridor through various gaps and drainage holes, or over time, the concrete or other filling materials inside the dam may peel off due to aging, erosion, etc. These peeled fragments will accumulate in the corridor to form siltation. When there is a lot of silt, it will have a certain impact on the drainage system of the hydropower station and interfere with the maintenance and inspection work of the staff. Therefore, people need to regularly clean the silt in the dam corridor.

[0003] However, in real life, we know that the silt is mainly composed of gravel and mud, but people are unable to separate the gravel and mud in the process of cleaning the silt in the corridor, which will cause troubles in the subsequent treatment of the cleaned silt. In addition, in the process of cleaning the silt, the staff are required to manually load the silt, which greatly increases the workload of the staff and leads to low working efficiency. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a dredging device for a dam gallery of a power station. The dredging device has the advantages of high automation and high working efficiency.

[0005] The desilting device for a power station dam gallery according to an embodiment of the present invention comprises a vehicle body, a bucket, a conveying member and a separation mechanism.

[0006] The bucket is flippably arranged on the vehicle body so that the corridor silt can be turned over to the conveying member by flipping the bucket; the separation mechanism is arranged at one end of the conveying member opposite to the bucket, and the separation mechanism includes a separator box, a stirring member and a flushing member, the separator box is used to collect the corridor silt, and the stirring member and the flushing member can separate the corridor silt.

[0007] The desilting device for the dam corridor of the power station of the embodiment of the present invention cleans the dam corridor by setting a bucket and a conveying member in cooperation, so as to remove the silt in the corridor to the conveying member, and the silt is transported to the separation box by the conveying member for separation by the flushing member. In the process of cleaning the silt in the dam corridor, the broken stones and mud in the silt are separated, and it is no longer necessary to transport the cleaned silt to the outside of the river for manual separation, which effectively reduces the workload of people in the subsequent treatment of the cleaned silt. Therefore, the desilting device has the advantage of high degree of automation.

[0008] The silt-clearing device for the power station dam gallery according to the embodiment of the present invention has the advantages of high automation and working efficiency.

[0009] In some embodiments, the sorting box has a filter plate and a liquid outlet, the liquid outlet is arranged in an area near the bottom of the sorting box, the filter plate is arranged in the sorting box so that the filtered particles are deposited on the filter plate, and there is a gap between the filter plate and the bottom surface of the sorting box so as to divide the sorting box into a sewage drainage chamber and a particle filtration area so that the filtered particles are deposited on the filter plate.

[0010] In some embodiments, the filter plate is tilted so that filtered particles settle on a lower end.

[0011] In some embodiments, the stirring member includes a stirring rod and a plurality of stirring blades disposed on the stirring rod, the stirring rod is rotatably disposed on the sorting box, and the plurality of stirring blades are disposed on the stirring rod at intervals along the circumference of the stirring rod.

[0012] In some embodiments, the separation mechanism further comprises a floating object scraper, wherein the floating object scraper is arranged beside the sorting box, and the floating object scraper has a swingable hook shovel.

[0013] In some embodiments, the stirring member includes a first stirring member and a second stirring member arranged in parallel, the stirring blades of the first stirring member and the stirring blades of the second stirring member are staggered, and the stirring rod of the first stirring member and the stirring rod of the second stirring member rotate in opposite directions.

[0014] In some embodiments, the flushing member is movably disposed on the distribution box along the width direction of the vehicle body.

[0015] In some embodiments, the flushing part includes a screw, a sleeve and a flushing pipe, the flushing pipe is connected to the sleeve, both ends of the screw are fixed on the sorting box, the sleeve cooperates with the screw thread to drive the flushing pipe to move along the width direction of the vehicle body through the rotation of the screw.

[0016] In some embodiments, the flushing pipe is L-shaped, a portion of the flushing pipe extends above the sorting box, and a portion of the flushing pipe extends along the height direction of the sorting box and is connected to the screw sleeve.

[0017] In some embodiments, the conveying member includes a driving motor, an active roller, a driven roller and a scraper belt. The driving motor and the active roller are connected by a first belt transmission. The scraper belt is sleeved outside the active roller and the driven roller and drives the scraper belt and the driven roller to rotate by the rotation of the active roller.

[0018] In some embodiments, the active roller and the stirring rod of the stirring member are connected via a second belt transmission, and the stirring rod of the stirring member and the screw of the flushing member are connected via a third belt transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic view from the front direction of the silt removal device for the power station dam gallery according to an embodiment of the present invention.

[0020] Figure 2 It is a stereoscopic view from the side of the silt removal device for the power station dam gallery according to an embodiment of the present invention.

[0021] Figure 3 It is a three-dimensional view from the rear direction of the silt removal device for the power station dam gallery according to an embodiment of the present invention.

[0022] Figure 4 It is a three-dimensional diagram of a vehicle body, a bucket, and a conveying member according to an embodiment of the present invention.

[0023] Figure 5 4 is a perspective view of a separation mechanism according to an embodiment of the present invention.

[0024] Figure 6 is another stereoscopic diagram of the separation mechanism according to an embodiment of the present invention.

[0025] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0026] Reference numerals:

[0027] Car body 1;

[0028] Bucket 2;

[0029] Conveying member 3; driving motor 31; driving roller 32; driven roller 33; scraper belt 34;

[0030] Separation mechanism 4; impurity separation box 41; filter plate 411; liquid outlet 412;

[0031] Stirring member 42; Stirring rod 421; Stirring blade 422;

[0032] Flushing member 43; screw rod 431; screw sleeve 432; flushing pipe 433;

[0033] External water pipe 5;

[0034] Gear shaft 6. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] Reference below Figure 1-Figure 7 The present invention is described in detail with reference to a silt-clearing device for a dam gallery of a power station according to an embodiment of the present invention.

[0037] The desilting device for a power station dam gallery according to an embodiment of the present invention comprises a vehicle body 1 , a bucket 2 , a conveying member 3 and a separation mechanism 4 .

[0038] The bucket 2 is flippably arranged on the vehicle body 1 so that the corridor silt can be flipped onto the conveying member 3 by flipping the bucket 2; the separation mechanism 4 is arranged at one end of the conveying member 3 opposite to the bucket 2, and the separation mechanism 4 includes a separator box 41, a stirring member 42 and a flushing member 43. The separator box 41 is used to collect the corridor silt, and the stirring member 42 and the flushing member 43 can separate the corridor silt.

[0039] The desilting device for the corridor of the power station dam of the embodiment of the present invention cleans the corridor of the dam by setting a bucket 2 and a conveying member 3 in cooperation, so as to remove the sediment in the corridor to the conveying member 3, and the sediment is transferred to the separation box 41 by the conveying member 3 for separation by the flushing member 43. In the process of cleaning the sediment in the corridor of the dam, the broken stones and mud in the sediment are separated, and it is no longer necessary to transport the sediment out of the river channel for manual separation, which effectively reduces the workload of people in the subsequent treatment of the sediment cleaned out. Therefore, the desilting device has the advantage of high degree of automation.

[0040] The silt-clearing device for the power station dam gallery according to the embodiment of the present invention has the advantage of high automation.

[0041] like Figure 1 and Figure 5As shown, the sorting box 41 has a filter plate 411 and a liquid outlet 412. The liquid outlet 412 is arranged in the area near the bottom of the sorting box 41. The filter plate 411 is arranged in the sorting box 41 so that the filtered particles are deposited on the filter plate 411. There is a gap between the filter plate 411 and the bottom surface of the sorting box 41 so as to divide the sorting box 41 into a sewage drainage chamber and a particle filtration area so that the filtered particles are deposited on the filter plate 411.

[0042] The desilting device for the corridor of the power station dam of the embodiment of the present invention is provided with a filter plate 411 and a liquid outlet 412 in the separation box 41. The filter plate 411 is provided so as to divide the separation box 41 into a sewage discharge chamber and a particle filtering area, so that the separated filtered particles can be deposited on the filter plate 411, thereby realizing the separation of sludge, gravel and mud in the corridor sediment, thereby realizing the thoroughness of the separation of sludge, gravel and mud.

[0043] Furthermore, a discharge pipe is provided on the liquid outlet 412. The diluted mud can be discharged through the discharge pipe, and the discharged mud can be collected and settled in the collection well to separate the mud and water. Among them, water can also be passed into the flushing part 43 to flush the mud again to realize the recycling of water resources.

[0044] The filter plate 411 is tilted to allow the filtered particles to settle on the lower end, thereby making it easy to clean out the broken stones.

[0045] like Figure 1 and Figure 5 As shown, the stirring member 42 includes a stirring rod 421 and a plurality of stirring blades 422 arranged on the stirring rod 421 . The stirring rod 421 is rotatably penetrated on the sorting box 41 , and the plurality of stirring blades 422 are arranged on the stirring rod 421 at intervals along the circumference of the stirring rod 421 .

[0046] The desilting device for the corridor of the power station dam of the embodiment of the present invention is provided by rotatably inserting the stirring rod 421 on the separator box 41, and the plurality of stirring blades 422 are provided on the stirring rod 421 at intervals along the circumference of the stirring rod 421. Thus, the desilting device for the corridor of the power station dam of the embodiment of the present invention can improve the rapidity of removing the mud adhering to the filtered particulate matter.

[0047] like Figure 1 and Figure 5 As shown, the stirring member 42 includes a first stirring member 42 and a second stirring member 42 arranged in parallel, the stirring blades 422 of the first stirring member 42 and the stirring blades 422 of the second stirring member 42 are arranged alternately, and the stirring rod 421 of the first stirring member 42 and the stirring rod 421 of the second stirring member 42 rotate in opposite directions.

[0048] The desilting device for the dam gallery of the power station of the embodiment of the present invention is provided with a plurality of stirring members 42, wherein the stirring rods 421 of the plurality of stirring members 42 are arranged in parallel, and the stirring blades 422 of the plurality of stirring members 42 are arranged in a staggered manner. When the stirring rod 421 of the first stirring member 42 and the stirring rod 421 of the second stirring member 42 rotate in opposite directions, the mud and the gravel are fully stirred. Thus, the desilting device helps to achieve thorough separation of the mud and the gravel.

[0049] In addition, the stirring blades 422 of the first stirring member 42 and the stirring blades 422 of the second stirring member 42 are arranged alternately. The stirring force can be increased, and a stirring dead angle between the first stirring member 42 and the second stirring member 42 can be prevented, thereby avoiding the problem of poor mud clearing effect due to uneven stirring. Thus, the silt clearing device helps to further achieve the thoroughness of mud and gravel separation.

[0050] Specifically, both ends of the stirring rod 421 of the first stirring member 42 and the stirring rod 421 of the second stirring member 42 are arranged in an area near the middle of the sorting box 41, and the stirring blade 422 of the first stirring member 42 and the stirring blade 422 of the second stirring member 42 have no contact with the filter plate 411 so as to hinder the rotation of the stirring member 42.

[0051] The separation mechanism 4 also includes a floating object scraper, which is arranged next to the debris separation box 41 and has a swingable hook shovel. The floating object scraper can separate floating objects, silt and particulate matter. Therefore, the desilting device for the dam gallery of the power station according to the embodiment of the present invention has the advantage of good separation effect of debris.

[0052] For example, the floating object scraper may be a reciprocating hook shovel.

[0053] like Figure 1 and Figure 5 As shown, the flushing member 43 is movably arranged on the sorting box 41 along the width direction of the vehicle body 1. Then, the particles at multiple positions in the sorting box 41 are cleaned by the movement of the flushing member 43, and the mud is washed off the gravel, thereby separating the mud and the gravel. Therefore, the desilting device for the dam gallery of the power station according to the embodiment of the present invention has the advantage of good separation effect.

[0054] like Figure 1 and Figure 5 As shown, the flushing member 43 includes a screw 431, a sleeve 432 and a flushing pipe 433. The flushing pipe 433 is connected to the sleeve 432. Both ends of the screw 431 are fixed on the sorting box 41. The sleeve 432 and the screw 431 are threadedly matched to drive the flushing pipe 433 to move along the width direction of the vehicle body 1 through the rotation of the screw 431.

[0055] The desilting device for the corridor of the power station dam of the embodiment of the present invention is characterized in that the flushing member 43 is divided into a screw 431, a screw sleeve 432 and a flushing pipe 433, and the screw sleeve 432 is threadedly matched with the screw 431 to drive the flushing pipe 433 to move along the width direction of the vehicle body 1 through the rotation of the screw 431. Therefore, the transmission structure of the screw 431 and the screw sleeve 432 has the advantage of good transmission effect.

[0056] Optionally, the flushing pipe 433 is connected to the external water pipe 5 so that water can be sprayed out from the spray head of the flushing pipe 433 .

[0057] like Figure 1 and Figure 5 As shown, the flushing pipe 433 is L-shaped, a portion of the flushing pipe 433 extends to the top of the sorting box 41 , and a portion of the flushing pipe 433 extends along the height direction of the sorting box 41 and is connected to the screw sleeve 432 .

[0058] The desilting device for the dam gallery of the power station according to the embodiment of the present invention is configured such that the flushing pipe 433 is L-shaped, and a portion of the flushing pipe 433 extends above the separator box 41. Therefore, the desilting device has the advantage of good structural stability.

[0059] The outer surface of the screw 431 is threadedly connected with a screw sleeve 432. As the screw 431 rotates, the screw sleeve 432 can be driven to reciprocate on the outer surface of the screw 431. The outer surface of the screw sleeve 432 is fixedly connected with an L-shaped flushing pipe 433. The L-shaped flushing pipe 433 is connected to an external booster water pump through a slender hose. By starting the water pump, the outer surface of the L-shaped flushing pipe 433 is fixedly connected with a group of nozzles. The water in the L-shaped flushing pipe 433 can be sprayed out through the nozzles, thereby diluting the mud, so that it can quickly fall from the filter plate 411 in the sorting box 41, and can also flush the stubborn mud adhered to the gravel, so that the mud and the gravel are separated more thoroughly.

[0060] Furthermore, a portion of the flushing pipe 433 extends in the length direction of the sorting box 41 , a portion of the flushing pipe 433 is disposed above the stirring member 42 , and a nozzle of the flushing pipe 433 is disposed toward the inside of the sorting box 41 .

[0061] Furthermore, the screw sleeve 432 can be connected to the outer wall surface of the sorting box 41 through two connecting plates.

[0062] like Figures 1 to 3 as well as Figure 5 As shown, the conveying member 3 includes a driving motor 31, an active roller 32, a driven roller 33 and a scraper belt 34. The driving motor 31 and the active roller 32 are connected by a first belt transmission. The scraper belt 34 is sleeved outside the active roller 32 and the driven roller 33, and the rotation of the scraper belt 34 and the driven roller 33 is driven by the rotation of the active roller 32.

[0063] The desilting device for the dam gallery of the power station according to the embodiment of the present invention divides the conveying member 3 into a driving motor 31, an active roller 32, a driven roller 33 and a scraper belt 34. The scraper belt 34 can not only transport the silt but also prevent the silt from falling everywhere.

[0064] like Figures 1 to 3 and Figure 5 As shown, the active roller 32 and the stirring rod 421 of the stirring member 42 are connected by a second belt transmission, and the stirring rod 421 of the stirring member 42 and the screw 431 of the flushing member 43 are connected by a third belt transmission. Therefore, the silting device has the advantage of good transmission connectivity.

[0065] Specifically, the driving motor 31 has a first transmission wheel, the active roller 32 has a second transmission wheel and a third transmission wheel, and the first transmission wheel and the second transmission wheel are driven by a first belt. The stirring rod 421 of the first stirring member 42 has a fourth transmission wheel, and the stirring rod 421 of the second stirring member 42 has a fifth transmission wheel, and the third transmission wheel and the fourth transmission wheel are driven by a second belt, and the fourth transmission wheel and the fifth transmission wheel are also driven by a belt. The fifth transmission wheel is also provided with a gear, and a gear shaft can be set to pass through the sorting box 41 during the transmission process, and the gear shaft 6 is set parallel to the stirring rod 421 of the first stirring member 42. For example, Figure 7 As shown, the gear of the gear shaft 6 meshes with the gear on the fifth transmission wheel. A sixth transmission wheel is also provided on the other end of the gear shaft, and a seventh transmission wheel is provided on the screw rod 431. The sixth transmission wheel and the seventh transmission wheel on the screw rod 431 are driven by a third belt.

[0066] Working principle: first, place the device at a suitable position in the corridor of the dam, then start the body 1 and the fuel motor, as the body 1 moves, the silt accumulated in the corridor can be collected into the collecting tank in the body 1 under the action of the bucket 2, at this time, the driving motor 31 and the active roller 32 of the conveying member 3 will rotate under the drive of the first belt, and under the action of the conveyor belt, the silt collected by the bucket 2 in the body 1 can be transported to the sorting box 41, and the silt can be stirred in the sorting box 41 under the rotation of the stirring member 42, and at the same time, as the screw 431 rotates, the screw sleeve 432 can be driven to move back and forth, and the gravel contained in the silt in the sorting box 41 can be cleaned under the action of the L-shaped flushing pipe 433 and the nozzle, and the diluted mud can fall from the filter screen in the sorting box 41, thereby realizing the separation of gravel and mud contained in the silt, reducing the trouble caused by people in the subsequent treatment of the cleaned silt.

[0067] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0071] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0072] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A dredging device for a power station dam gallery, characterized in that: include: A vehicle body, a bucket and a conveying member, wherein the bucket is flippably arranged on the vehicle body so that the corridor sediment can be flipped onto the conveying member by flipping the bucket; The separation mechanism is arranged at one end of the conveying member opposite to the bucket, and the separation mechanism includes a separator box, a stirring member and a flushing member. The separator box is used to collect corridor sediments, and the stirring member and the flushing member can separate corridor sediments.

2. The dredging device for the dam gallery of a power station according to claim 1, characterized in that: The separator box has a filter plate and a liquid outlet, wherein the liquid outlet is arranged in an area near the bottom of the separator box, the filter plate is arranged in the separator box so that the filtered particles are deposited on the filter plate, and there is a gap between the filter plate and the bottom surface of the separator box so as to divide the separator box into a sewage drainage chamber and a particle filtration area so that the filtered particles are deposited on the filter plate.

3. The dredging device for the dam gallery of a power station according to claim 2, characterized in that: The filter plate is arranged obliquely on the filter plate so that filtered particles settle on the lower end.

4. The desilting device for a power station dam gallery according to claim 1, characterized in that: The stirring member comprises a stirring rod and a plurality of stirring blades arranged on the stirring rod, wherein the stirring rod is rotatably arranged on the mixing box, and the plurality of stirring blades are arranged on the stirring rod at intervals along the circumference of the stirring rod; And / or, the separation mechanism further comprises a floating object scraper, the floating object scraper is arranged beside the debris separation box, and the floating object scraper has a swingably arranged hook shovel.

5. The desilting device for the dam gallery of a power station according to claim 4, characterized in that: The stirring member comprises a first stirring member and a second stirring member which are arranged in parallel, the stirring blades of the first stirring member and the stirring blades of the second stirring member are arranged alternately, and the stirring rod of the first stirring member and the stirring rod of the second stirring member rotate in opposite directions.

6. The desilting device for the dam gallery of a power station according to claim 4, characterized in that: The flushing member is movably arranged on the sorting box along the width direction of the vehicle body.

7. The desilting device for the dam gallery of a power station according to claim 6, characterized in that: The flushing part includes a screw, a screw sleeve and a flushing pipe, the flushing pipe is connected to the screw sleeve, both ends of the screw are fixed on the sorting box, the screw sleeve cooperates with the screw thread to drive the flushing pipe to move along the width direction of the vehicle body through the rotation of the screw.

8. The desilting device for the dam gallery of a power station according to claim 7, characterized in that: The flushing pipe is L-shaped, a portion of which extends to the top of the sorting box, and a nozzle of the flushing pipe is arranged toward the inside of the sorting box. A portion of the flushing pipe extends along the height direction of the sorting box and is connected to the screw sleeve.

9. The desilting device for the dam gallery of a power station according to claim 7, characterized in that: The conveying member includes a driving motor, an active roller, a driven roller and a scraper belt. The driving motor and the active roller are connected through a first belt transmission. The scraper belt is sleeved outside the active roller and the driven roller and drives the scraper belt and the driven roller to rotate by the rotation of the active roller.

10. The desilting device for the dam gallery of a power station according to claim 9, characterized in that: The active roller and the stirring rod of the stirring member are connected via a second belt transmission, and the stirring rod of the stirring member and the screw of the flushing member are connected via a third belt transmission.

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