A river sediment collection device for water conservancy projects

Abstract

The present application relates to a river sediment collection device for water conservancy projects, and relates to the technical field of river sediment prevention and control, which includes a sand retaining plate and a collection assembly, the collection assembly includes a first collection part and a sand discharge part, the first collection part includes a first collection plate, the sand discharge part includes a first sand discharge pipe, a first spiral conveying rod, a second sand discharge pipe and a second spiral conveying rod, a plurality of first sand filter holes are provided on the sand retaining plate, the first sand discharge pipe is penetrated on the sand retaining plate, and a first sand inlet hole is provided, the first collection plate is arranged on the first sand discharge pipe, and is used to close the first sand inlet hole under the action of buoyancy, the first spiral conveying rod is arranged in the first sand discharge pipe, the second sand discharge pipe is arranged on the sand retaining plate, and is connected with the first sand discharge pipe, the second spiral conveying rod is arranged in the second sand discharge pipe, the first collection plate, the first sand discharge pipe and the second sand discharge pipe cooperate to continuously and synchronously collect and discharge sediment in the river. The present application has the effect of enabling sediment in the river to be continuously collected.

Description

Technical Field

[0001] The present application relates to the technical field of river sediment prevention and control, and in particular to a river sediment collection device for water conservancy projects. Background Art

[0002] Water conservancy projects are projects built to control and allocate natural surface water and groundwater to achieve the purpose of eliminating harm and promoting benefits. Water conservancy projects are needed to prevent and control the rise of riverbeds caused by soil erosion.

[0003] The Chinese patent with the publication number CN113175020B discloses a river sediment collection device for water conservancy projects, which is provided with an inner cylinder, a rotating cylinder and an hourglass plate, the rotating cylinder is rotatably sleeved on the inner cylinder, a through slot B for connecting with the through slot A provided on the inner cylinder is provided on the rotating cylinder, the rotating cylinder is connected with a fan impeller for driving the rotation of itself, the hourglass plate is fixedly connected to the rotating cylinder, and a sand storage hopper is fixedly provided on the plate surface. When in use, the hourglass plate intercepts the sediment into the sand storage hopper, the fan impeller drives the rotating cylinder to rotate under the drive of the water flow until the through slot B is connected with the through slot A, and the sediment in the sand storage hopper moves along the hourglass plate into the inner cylinder to realize the collection of sediment in the river.

[0004] In the above technical solution, when the sand storage hopper is discharging sand, the sand-blocking glass plate and the sand storage hopper are difficult to collect the silt in the river, making it difficult to continuously collect the silt in the river, thereby reducing the amount of silt collected. Summary of the invention

[0005] In order to enable continuous collection of sediment in a river and to increase the amount of sediment collected, the present application provides a river sediment collection device for water conservancy projects.

[0006] The present application provides a river sediment collection device for water conservancy projects, which adopts the following technical solution:

[0007] A river sediment collection device for water conservancy projects, comprising a sand retaining plate and a collection assembly, the collection assembly comprising a first collection part and a sand discharge part, the first collection part comprising a first collection plate, the sand discharge part comprising a first sand discharge pipe, a first spiral conveying rod, a second sand discharge pipe and a second spiral conveying rod;

[0008] A plurality of first sand filtering holes are provided on the sand retaining plate;

[0009] One end of the first sand discharge pipe is sealed, and the other end is open. A plurality of first sand discharge pipes are provided, and all of them are fixedly installed on the sand baffle plate from one side of the sand baffle plate with the sealed end. A first sand inlet hole is provided at the bottom of the first sand discharge pipe located on one side of the sand baffle plate.

[0010] A plurality of first collecting plates are provided, and correspond to the first sand discharge pipes one by one. One side of the first collecting plate is hinged to the sand retaining plate through a first hinge shaft. The portion of the first collecting plate close to the first hinge shaft is bent into an arc shape and covers the first sand inlet hole. The density of the first collecting plate is less than the density of the river water.

[0011] A plurality of first spiral conveying rods are provided, and correspond to the first sand discharge pipes one by one. The first spiral conveying rods are rotatably provided in the first sand discharge pipe. A rotating cylinder is coaxially fixedly connected to one end of the first spiral conveying rod close to the opening of the first sand discharge pipe. The rotating cylinder is rotatably connected to the first sand discharge pipe. A plurality of first blades are fixedly provided around the axis of the rotating cylinder. A first clearance hole for the first blade to rotate is provided on the sand baffle plate. A plurality of first baffles corresponding to the first sand discharge pipes one by one are fixedly provided on one side of the sand baffle plate close to the first collecting plate. The first baffle is directly opposite to the first blade and is located on one side of the axis of the first sand discharge pipe.

[0012] Both ends of the second sand discharge pipe are sealed and fixed on the side of the sand retaining plate close to the rotating cylinder. The second sand discharge pipe is connected with all the first sand discharge pipes through the rotating cylinder and is rotatably connected with all the rotating cylinders.

[0013] The second spiral conveying rod is rotatably arranged in the second sand discharge pipe, the bottom end of the second spiral conveying rod passes through the bottom end of the second sand discharge pipe, and a plurality of second blades are fixedly arranged around the axis direction, and a second baffle plate is fixedly connected to a side of the second sand discharge pipe close to the first collecting plate, the second baffle plate is opposite to the second blade, and is located on one side of the axis of the second sand discharge pipe;

[0014] The top end of the second sand discharge pipe is connected to a sand guide pipe, which is used to guide the silt to the river bank.

[0015] By adopting the above technical solution, a sand retaining plate is placed in the river channel, and the first collecting plate closes the first sand inlet hole under the action of buoyancy. The first sand filter hole filters the silt in the sand collecting area formed between the first collecting plate, the first sand discharge pipe and the sand retaining plate, so that the silt is not easy to move with the river. The silt is deposited in the sand collecting area. When the weight of the deposited silt is greater than the preset deposition weight, the silt relies on gravity to drive the first collecting plate to rotate, and the first sand inlet hole is opened. The silt at the bottom of the sand collecting area flows from the first sand inlet hole into the first sand discharge pipe until the weight of the deposited silt is no more than the preset deposition weight. The first collecting plate closes the first sand inlet hole again, so that the silt can automatically flow into the first sand discharge pipe when it is deposited to the preset deposition weight.

[0016] The first baffle plate forms a unilateral flow block for all the first blades as a whole, and the second baffle plate forms a unilateral flow block for all the second blades as a whole, so that the water flow can drive the first blades and the second blades to rotate, the first blades drive the first spiral conveying rod to rotate through the rotating cylinder, and the second blades drive the second spiral conveying rod to rotate, the first spiral conveying rod conveys the sediment in the first sand discharge pipe into the second sand discharge pipe, and the second spiral conveying rod conveys the sediment in the second sand discharge pipe into the sand guide pipe, and the sand guide pipe guides the sediment to the river bank, so that the collection and discharge of sediment in the river can be carried out synchronously and continuously, thereby increasing the amount of sediment collected.

[0017] Optionally, the collecting assembly also includes a second collecting part, the second collecting part includes a second collecting plate, a plurality of second collecting plates are provided, and they correspond one to one with the first sand discharge pipe, a second sand inlet hole is opened at the bottom of the first sand discharge pipe away from the first collecting plate, one side of the second collecting plate is hinged to the sand retaining plate through a second hinge shaft, a portion of the second collecting plate close to the second hinge shaft is bent in an arc shape, and a cover is provided at the second sand inlet hole, a density of the second collecting plate is less than a density of river water, a middle part of the second collecting plate is bent, and a side away from the second hinge shaft is used to abut against the sand retaining plate, a plurality of second sand filtering holes are opened on the second collecting plate, and a size of the second sand filtering hole is smaller than that of the first sand filtering hole.

[0018] By adopting the above technical solution, the second collecting plate performs secondary filtration on the river water through the second sand filter holes, thereby improving the sediment collection effect; through the buoyancy of the river water and the gravity of the deposited sediment, the sediment deposited between the second collecting plate, the first sand discharge pipe and the sand retaining plate can be continuously deposited and intermittently flow into the first sand discharge pipe, so that the sediment collected by the second collecting plate can also be collected and discharged synchronously and continuously.

[0019] Optionally, the first collecting plate is fixedly connected to a first sand pushing plate via a first connecting rod, the first sand pushing plate is arranged close to the first sand discharge pipe, and the second collecting plate is fixedly connected to a second sand pushing plate via a second connecting rod, the second sand pushing plate is arranged close to the first sand discharge pipe.

[0020] By adopting the above technical solution, the first sand pushing plate can push the sediment into the first sand discharge pipe when the first collecting plate opens the first sand inlet hole, and the second sand pushing plate can push the sediment into the first sand discharge pipe when the second collecting plate opens the second sand inlet hole, so that the deposited sediment can easily flow into the first sand discharge pipe.

[0021] Optionally, an auxiliary rotation assembly is provided on the side of the sand retaining plate away from the second sand discharge pipe, the auxiliary rotation assembly includes an auxiliary rotation frame, a collecting gear and an auxiliary drive part, a side wall of the auxiliary rotation frame is fixedly connected to the sand retaining plate, a plurality of collecting gears and auxiliary drive parts are provided, and each of them corresponds to the first sand discharge pipe one by one, and the collecting gear and the auxiliary drive part are both provided in the auxiliary rotation frame;

[0022] The first hinge shaft is fixedly connected to the first collecting plate, and one end of the first hinge shaft close to the auxiliary rotating frame rotates and penetrates into the auxiliary rotating frame. The collecting gear is coaxially fixedly connected to the first hinge shaft, and the auxiliary drive part is connected to the auxiliary rotating frame and is used to intermittently drive the collecting gear to rotate when the river flow rate is greater than the preset flow rate.

[0023] By adopting the above technical solution, when the river is flowing rapidly, the flow rate of the river will be greater than the preset flow rate. At this time, the auxiliary drive unit can intermittently drive the collecting gear to rotate, so that the first hinge shaft can be intermittently driven to rotate by the water flow. Therefore, when the rapid flow squeezes the first collecting plate, the first collecting plate can open the first sand inlet hole with the assistance of the intermittent drive of the auxiliary drive unit, so that the first collecting plate can stably and continuously collect sediment even when the river is flowing rapidly.

[0024] Optionally, the auxiliary drive part includes an auxiliary drive gear, a telescopic rod and a lifting plate, the auxiliary drive gear is an incomplete gear and is coaxially fixed with a rotating shaft, both ends of the rotating shaft are slidably arranged in a slide groove provided on the inner side wall of the auxiliary rotating frame, and the rotating shaft is rotatably connected with the auxiliary rotating frame around its own axis direction;

[0025] The movable end of the telescopic rod is rotatably connected to the rotating shaft, the telescopic rod is fixedly connected to the rotating rod, both ends of the rotating rod are rotatably connected to the auxiliary rotating frame, one end of the lifting plate is fixedly connected to the rotating rod, when the river flow rate is greater than the preset flow rate, the lifting plate drives the telescopic rod to make the rotating shaft slide to the top of the slide slot, and the auxiliary drive gear can mesh with the collection gear;

[0026] A plurality of third blades are fixedly arranged around the axis of the rotating shaft. A third baffle is arranged on one side of the rotating shaft close to the first collecting plate. The third baffle is opposite to the third blade and is located on one side of the axis of the rotating shaft. The third baffle is fixedly connected to the auxiliary rotating frame.

[0027] By adopting the above technical solution, when the river flow rate is not greater than the preset flow rate, the auxiliary drive gear and the rotating shaft can slide down due to gravity, so that the auxiliary drive gear is disengaged from the collecting gear, so that the first collecting plate can open and close the first sand inlet hole by relying on its own buoyancy and the gravity of the sediment; when the river flow rate is greater than the preset flow rate, the water flow can drive the lifting plate to rotate, and can drive the auxiliary drive gear to rotate through the third baffle plate and the third blade, the lifting plate drives the telescopic rod to swing through the rotating rod, the telescopic rod drives the rotating shaft to slide to the top of the slide slot, so that the auxiliary drive gear can engage with the collecting gear, and the auxiliary drive gear intermittently drives the collecting gear to rotate, so that the first collecting plate is convenient to intermittently open the first sand inlet hole under the state of rapids squeezing.

[0028] Optionally, the sand barrier is connected with an anti-debris component, which includes an anti-debris roller and a belt. Three anti-debris rollers are provided, one of which is located at the top of the sand barrier, and the other two anti-debris rollers are respectively located on both sides of the sand barrier, and are both arranged close to the bottom of the sand barrier. The anti-debris roller is parallel to the first sand discharge pipe and is rotatably connected to the sand barrier;

[0029] A plurality of belts are provided, and all are mounted on three anti-debris rollers, and the plurality of belts are arranged along the axial direction of the anti-debris roller; a plurality of fourth blades are fixedly provided around the axial direction at both ends of the anti-debris roller close to the first collecting plate and located at the bottom end of the sand baffle plate, and a fourth baffle plate is provided on the side of the anti-debris roller away from the sand baffle plate, the fourth baffle plate is opposite to the fourth blade and is located on one side of the axial direction of the anti-debris roller, and the fourth baffle plate is fixedly connected to the sand baffle plate.

[0030] By adopting the above technical solution, the water flow drives the anti-debris roller to rotate through the fourth baffle plate and the fourth blade, and the anti-debris roller drives the belt to rotate. When aquatic plants and debris in the river flow to the belt, the rotating belt carries the aquatic plants and debris to move, so that the aquatic plants and debris can pass over the sand baffle, making it difficult for the aquatic plants and debris in the river to block the first sand filter hole.

[0031] Optionally, a plurality of conveying needles are fixedly provided on the outer surface of the belt along its extension direction.

[0032] By adopting the above technical solution, the conveying needle can penetrate into the aquatic plants and debris, and the belt conveys the aquatic plants and debris through the conveying needle, thereby improving the conveying capacity of the belt.

[0033] Optionally, a plurality of knocking ropes are fixedly connected to the anti-debris roller at the top of the sand guard plate in the circumferential and axial directions, the plurality of knocking ropes along the axial direction of the anti-debris roller are respectively located between two adjacent belts, a knocking block is fixedly connected to the end of the knocking rope away from the anti-debris roller, and a second makeshift hole for the rotation of the knocking rope and the knocking block is opened at the top of the sand guard plate.

[0034] By adopting the above technical solution, the anti-debris roller on the top of the sand retaining plate can drive the knocking block to rotate through the knocking rope, so that the knocking block can cyclically knock on the sand retaining plate during rotation, so that the sand retaining plate can be subjected to knocking vibration, thereby making the first sand filter hole less likely to be blocked and making the deposition of mud and sand more compact.

[0035] Optionally, the auxiliary rotating frame is connected with an opening and closing assembly, which includes a closing plate, a closing gear and a closing rack. The closing plate cover is arranged on a side of the auxiliary rotating frame close to the first collecting plate. A side of the closing plate close to the sand retaining plate is hinged to the auxiliary rotating frame through a rotating shaft, and the closing plate is fixedly connected to the rotating shaft.

[0036] The closed gear is coaxially fixed to the bottom end of the rotating shaft, the closed gear is meshed with the closed rack, the closed rack is slidingly connected to the sand retaining plate in a direction perpendicular to the surface of the sand retaining plate, and the end of the closed rack away from the closed gear is connected to the anti-debris roller with the fourth blade. When the river flow rate is greater than the preset flow rate, the anti-debris roller opens the closing plate through the closed rack and the closed gear.

[0037] By adopting the above technical solution, when the river flow rate is not greater than the preset flow rate, the closing plate closes the side of the auxiliary rotating frame so that the water flow is difficult to affect the rotation of the first collecting plate; when the river is turbulent, that is, the river flow rate is greater than the preset flow rate, the anti-debris roller will accelerate the rotation, and drive the rotating shaft to rotate through the closing rack and the closing gear to open the closing plate, so that the opening and closing of the closing plate can be automatically controlled according to the water flow.

[0038] Optionally, the opening and closing assembly further comprises an inertia wheel, a magnetic sheet and an iron sheet, and the inertia wheel is coaxially fixed to an end of the anti-trash roller on which the fourth blade is arranged, close to the auxiliary rotating frame;

[0039] There are more than three magnetic sheets, and they are all slidably arranged on the side of the inertia wheel away from the anti-trash roller. All the magnetic sheets form a regular polygon. The sliding direction of the magnetic sheets is the direction close to or away from the center of the inertia wheel. The polarities of the sides of two adjacent magnetic sheets close to each other are opposite.

[0040] The iron sheet is located in the regular polygon area surrounded by all the magnetic sheets. The iron sheet is bent into an arc shape, and its diameter is equal to the diameter of the inscribed circle of the regular polygon surrounded by all the magnetic sheets. The iron sheet is located on the side of the regular polygon surrounded by all the magnetic sheets close to the sand baffle. The iron sheet abuts against some of the magnetic sheets and is magnetically connected. The iron sheet is fixedly connected to the end of the closed rack away from the closed gear.

[0041] By adopting the above technical scheme, when the river flow velocity is not greater than the preset flow velocity, the rotation speed of the anti-debris roller is low, and under the action of the magnetic attraction force, all the magnetic sheets are magnetically attracted to each other and abutted, so that the iron sheet is located at the position closest to the center of the inertia wheel, and the closing plate closes the side of the auxiliary rotating frame; when the river flow velocity is greater than the preset flow velocity, the inertia wheel accelerates the rotation, which increases the centrifugal force on the magnetic sheet, causing the magnetic sheet to slide away from the center of the inertia wheel, and the magnetic sheet absorbs the iron sheet during the sliding process and slides away from the center of the inertia wheel together, and the iron sheet drives the closed rack to slide, the closed rack drives the closed gear to rotate, the closed gear drives the rotating shaft to rotate, and the rotating shaft drives the closing plate to rotate to open the closing plate, so that the opening and closing of the closing plate can be automatically controlled by the rotation speed of the inertia wheel.

[0042] In summary, the present application includes at least one of the following beneficial technical effects:

[0043] 1. By arranging the sand retaining plate, the first collecting plate, the second collecting plate, the first sand discharge pipe, the first spiral conveying rod, the second sand discharge pipe and the second spiral conveying rod, the collection and discharge of the silt in the river can be carried out continuously and synchronously, thereby increasing the amount of silt collected;

[0044] 2. By arranging a lifting plate, a rotating rod, a telescopic rod, a rotating shaft and an auxiliary drive gear, the first collecting plate can intermittently open the first sand inlet hole under the squeezing of the rapid flow;

[0045] 3. By setting up anti-debris rollers and belts, aquatic plants and debris in the river are not easy to block the first sand filter hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0047] Figure 2 is a cross-sectional view of a first screw conveying rod and a second screw conveying rod;

[0048] Figure 3 yes Figure 1 Magnified view at A in the middle;

[0049] Figure 4 is a cross-sectional view of a first collecting portion and a second collecting portion;

[0050] Figure 5 is a schematic diagram of the structure of the second collecting part and the auxiliary rotating assembly;

[0051] Figure 6 It is a structural schematic diagram of the auxiliary drive unit;

[0052] Figure 7 It is a structural diagram of the switch component.

[0053] Description of reference numerals:

[0054] 1. sand baffle; 11. first sand filter hole; 12. first clearance hole; 13. second clearance hole; 14. support rod; 2. collection assembly; 21. first collection part; 211. first collection plate; 2111. first hinge shaft; 2112. first connecting rod; 212. first sand push plate; 22. sand discharge part; 221. first sand discharge pipe; 2211. first sand inlet hole; 2212. second sand inlet hole; 222. first spiral conveying rod; 2221. rotating cylinder; 2222. first blade; 2223. first baffle plate; 223. second sand discharge pipe; 2231. sand guide pipe; 2232. drainage hole; 224. second spiral conveying rod; 2241. second blade; 2242. second baffle plate; 23. second collection part; 231. second collection plate; 23 11. second hinge shaft; 2312. second sand filter hole; 2313. second connecting rod; 232. second sand push plate; 3. auxiliary rotation assembly; 31. auxiliary rotation frame; 311. slideway; 32. collecting gear; 33. auxiliary drive unit; 331. auxiliary drive gear; 3311. rotating shaft; 3312. third blade; 3313. third baffle plate; 332. telescopic rod; 3321. rotating rod; 333. lifting plate; 4. anti-debris assembly; 41. anti-debris roller; 411. fourth blade; 4111. fourth baffle plate; 412. knocking rope; 413. knocking block; 42. belt; 421. conveying needle; 5. opening and closing assembly; 51. closing plate; 511. rotating shaft; 52. closing gear; 53. closing rack; 54. inertia wheel; 55. magnetic sheet; 56. iron sheet. DETAILED DESCRIPTION

[0055] The following is combined with Figure 1-7 This application is described in further detail.

[0056] The present application embodiment discloses a river sediment collection device for water conservancy projects. Figure 1 A river sediment collection device for a water conservancy project includes a sand retaining plate 1 and a collection assembly 2, the collection assembly 2 includes a first collection portion 21, a sand discharge portion 22 and a second collection portion 23, a plurality of first sand filtering holes 11 are opened on the sand retaining plate 1, the sand discharge portion 22 is arranged on the sand retaining plate 1, the first collection portion 21 and the second collection portion 23 are respectively located on both sides of the sand retaining plate 1, and are both arranged on the sand discharge portion 22, the first collection portion 21 and the second collection portion 23 are both used to continuously collect sediment in the river, and are both used to transport the collected sediment to the sand discharge portion 22, and the sand discharge portion 22 is used to continuously discharge sediment to the river bank.

[0057] When in use, the sand retaining plate 1 is placed in the river, the first sand filtering hole 11 blocks the silt from moving with the river, the first collecting part 21 and the second collecting part 23 both continuously collect the silt, and both transport the collected silt to the sand discharge part 22, and the sand discharge part 22 continuously discharges the sand to the river bank, so that the collection and discharge of silt in the river can be carried out continuously and synchronously, thereby increasing the amount of silt collected.

[0058] Reference Figure 1 The sand barrier 1 is in the shape of a rectangular plate and is arranged vertically. Two support rods 14 are fixedly connected to both ends of the top of the sand barrier 1. The two support rods 14 at each end of the sand barrier 1 are respectively located on both sides of the sand barrier 1. The support rods 14 are used to support the sand barrier 1 with the river bank as a supporting point. The first sand filter hole 11 is circular and runs through the thickness of the sand barrier 1. Multiple first sand filter holes 11 are arranged in a rectangular array.

[0059] Reference Figure 2 The sand discharge part 22 includes a first sand discharge pipe 221 , a first spiral conveying rod 222 , a second sand discharge pipe 223 and a second spiral conveying rod 224 .

[0060] Reference Figure 1 The first sand discharge pipe 221 is in a circular tube shape, one end of the first sand discharge pipe 221 is sealed, and the other end is open. A plurality of first sand discharge pipes 221 are evenly arranged along the vertical direction and are all arranged horizontally. The first sand discharge pipe 221 is fixedly penetrated on the sand retaining plate 1 from one side of the sand retaining plate 1 in the vertical direction with the sealed end.

[0061] Reference Figure 2There are multiple first spiral conveying rods 222, which correspond to the first sand discharge pipes 221 one by one. The first spiral conveying rods 222 are coaxially rotatably arranged in the first sand discharge pipe 221. A rotating cylinder 2221 is fixedly connected to one end of the first spiral conveying rod 222 close to the opening of the first sand discharge pipe 221. The rotating cylinder 2221 is in a circular cylindrical shape and is coaxially arranged with the first spiral conveying rod 222. The rotating cylinder 2221 is sleeved on the open end of the first sand discharge pipe 221 and is rotatably connected to the first sand discharge pipe 221. A plurality of first blades 2222 are fixedly arranged on the outer wall of the rotating cylinder 2221 around the axial direction. The first blades 2222 are in a rectangular sheet shape. A first clearance hole 12 for the first blade 2222 to rotate is opened on the sand retaining plate 1. The first clearance hole 12 is rectangular and runs through the thickness of the sand retaining plate 1.

[0062] Reference Figure 1 The second sand discharge pipe 223 is in a circular tubular shape, and both ends in the axial direction are sealed. The second sand discharge pipe 223 is vertically fixed on one side of the sand retaining plate 1 close to the rotating cylinder 2221. The second sand discharge pipe 223 is connected to all the rotating cylinders 2221 and is rotatably connected to all the rotating cylinders 2221. The second sand discharge pipe 223 is connected to all the first sand discharge pipes 221 through the rotating cylinder 2221.

[0063] Reference Figure 1 and Figure 2 The second spiral conveying rod 224 is coaxially rotatably arranged in the second sand discharge pipe 223, the bottom end of the second spiral conveying rod 224 passes through the bottom end of the second sand discharge pipe 223, and the bottom end of the second spiral conveying rod 224 is fixed with a plurality of second blades 2241 around the axis direction, and the second blades 2241 are rectangular sheets.

[0064] Reference Figure 1 and Figure 3 The top of the second sand discharge pipe 223 is connected to a sand guide pipe 2231, which is in a circular tubular shape and is used to guide the silt to the river bank. A plurality of circular drainage holes 2232 are provided on the side wall of the sand guide pipe 2231 near one end of the second sand discharge pipe 223 in the circumferential and axial directions.

[0065] Reference Figure 4 A first sand inlet hole 2211 is opened at the bottom of the first sand discharge pipe 221 close to the first collecting part 21, and a second sand inlet hole 2212 is opened at the bottom of the first sand discharge pipe 221 close to the second collecting part 23. The first sand inlet hole 2211 and the second sand inlet hole 2212 are both rectangular, and their length directions are parallel to the axial direction of the first sand discharge pipe 221.

[0066] The first collecting part 21 includes a first collecting plate 211 and a first sand pushing plate 212. There are multiple first collecting plates 211 and first sand pushing plates 212, and each corresponds to the first sand discharge pipe 221. The first collecting plate 211 is in the shape of a rectangular plate. One side of the first collecting plate 211 in the length direction is hinged to the sand retaining plate 1 through a first hinge shaft 2111. The first hinge shaft 2111 is fixedly connected to the first collecting plate 211 and is rotatably connected to the sand retaining plate 1. The part of the first collecting plate 211 close to the first hinge shaft 2111 is bent in an arc shape and covered at the first sand inlet hole 2211. Both ends of the first collecting plate 211 in the length direction extend toward the direction close to the sand retaining plate 1. The density of the first collecting plate 211 is less than the density of river water.

[0067] The first collecting plate 211 is fixedly connected to the first sand pushing plate 212 through two first connecting rods 2112. The two first connecting rods 2112 are respectively located at both ends of the length direction of the first collecting plate 211. The first sand pushing plate 212 is in the shape of a rectangular plate and is arranged close to the first sand discharge pipe 221. When the first collecting plate 211 closes the first sand inlet hole 2211, the first sand pushing plate 212 abuts against the sand blocking plate 1.

[0068] The second collecting portion 23 includes a second collecting plate 231 and a second sand pushing plate 232. The second collecting plate 231 and the second sand pushing plate 232 are both provided with a plurality of them, and each of them corresponds to the first sand discharge pipe 221 one by one. The second collecting plate 231 is in the shape of a rectangular plate. One side of the second collecting plate 231 in the length direction is hinged to the sand shielding plate 1 through a second hinge shaft 2311. The second hinge shaft 2311 is fixedly connected to the second collecting plate 231 and is rotatably connected to the sand shielding plate 1. The second collecting plate 231 is close to the second hinge shaft 2 The portion 311 is bent in an arc shape and covers the second sand inlet hole 2212. The density of the second collecting plate 231 is less than the density of river water. The middle part of the second collecting plate 231 is bent, and the side away from the second hinge shaft 2311 is used to abut against the sand retaining plate 1. Both ends of the second collecting plate 231 in the length direction extend toward the direction close to the sand retaining plate 1. A plurality of second sand filtering holes 2312 are provided on the second collecting plate 231. The size of the second sand filtering hole 2312 is smaller than the size of the first sand filtering hole 11.

[0069] Reference Figure 1A plurality of first baffles 2223 corresponding to the first sand discharge pipe 221 are fixedly connected to the side of the sand baffle plate 1 close to the first collecting plate 211. The first baffles 2223 are rectangular plate-shaped and bent into a quarter arc shape. The first baffles 2223 are directly opposite to the first blades 2222 and are located on one side of the axis of the first sand discharge pipe 221. A second baffle 2242 is fixedly connected to the side of the second sand discharge pipe 223 close to the first collecting plate 211. The second baffle 2242 is rectangular plate-shaped and bent into a quarter arc shape. The second baffle 2242 is directly opposite to the second blades 2241 and is located on one side of the axis of the second sand discharge pipe 223.

[0070] When in use, the support rod 14 supports the sand barrier 1 in the river so that the side of the sand barrier 1 close to the first collecting plate 211 is facing the flow direction of the river. The first sand filter hole 11 filters the silt and causes the silt to slowly deposit between the first collecting plate 211, the first sand discharge pipe 221 and the sand barrier 1. The second sand filter hole 2312 performs secondary filtering on the silt and causes the silt to deposit between the second collecting plate 231, the first sand discharge pipe 221 and the sand barrier 1.

[0071] When the weight of the deposited sediment is greater than the preset sedimentation weight, the sediment drives the first collecting plate 211 and the second collecting plate 231 to rotate, so that the first sand inlet hole 2211 and the second sand inlet hole 2212 are opened, and the sediment flows into the first sand discharge pipe 221 from the first sand inlet hole 2211 and the second sand inlet hole 2212 under the push of the first sand pushing plate 212 and the second sand pushing plate 232. Under the action of the first baffle plate 2223 and the second baffle plate 2242, the water flow drives the first blade 2222 and the second blade 2241 to rotate, and the first blade 2222 rotates to open the first sand inlet hole 2211 and the second sand inlet hole 2212. The cylinder 2221 drives the first spiral conveying rod 222 to rotate, and the second blade 2241 drives the second spiral conveying rod 224 to rotate. The first spiral conveying rod 222 conveys the silt in the first sand discharge pipe 221 to flow into the second sand discharge pipe 223, and the second spiral conveying rod 224 conveys the silt in the second sand discharge pipe 223 to flow into the sand guide pipe 2231. The moisture in the silt is discharged from the drainage hole 2232, and the silt flows along the sand guide pipe 2231 to the river bank, so that the collection and discharge of silt in the river can be carried out continuously and synchronously, thereby increasing the amount of silt collected.

[0072] Reference Figure 5 and Figure 6An auxiliary rotation assembly 3 is provided on the side of the sand retaining plate 1 away from the second sand discharge pipe 223. The auxiliary rotation assembly 3 includes an auxiliary rotation frame 31, a collecting gear 32 and an auxiliary drive part 33. The auxiliary rotation frame 31 is in the shape of a rectangular frame and is vertically arranged. A side wall of the auxiliary rotation frame 31 in the length direction is fixedly connected to the sand retaining plate 1. A plurality of collecting gears 32 are provided, and they correspond one to one with the first hinge shaft 2111. The collecting gear 32 is located in the auxiliary rotation frame 31. One end of the first hinge shaft 2111 close to the auxiliary rotation frame 31 rotates and penetrates into the auxiliary rotation frame 31. The collecting gear 32 is coaxially fixedly connected to the first hinge shaft 2111.

[0073] Reference Figure 6 There are multiple auxiliary drive parts 33, and they correspond one to one with the collecting gears 32. The auxiliary drive parts 33 are arranged in the auxiliary rotating frame 31. The auxiliary drive parts 33 include auxiliary drive gears 331, telescopic rods 332 and lifting plates 333. The auxiliary drive gear 331 is an incomplete gear and is coaxially fixed with a rotating shaft 3311. The axial direction of the rotating shaft 3311 is parallel to the axial direction of the first hinge shaft 2111. Both ends of the axial direction of the rotating shaft 3311 are slidably arranged in the sliding groove 311 opened on the inner wall of the auxiliary rotating frame 31. The sliding direction of the rotating shaft 3311 is the vertical direction. The rotating shaft 3311 is rotatably connected with the auxiliary rotating frame 31 around its own axial direction.

[0074] A plurality of third blades 3312 are fixedly provided around the axis direction of the rotating shaft 3311. The third blades 3312 are in the shape of rectangular sheets. A third baffle plate 3313 is provided on the side of the rotating shaft 3311 close to the first collecting plate 211. The third baffle plate 3313 is in the shape of a rectangular plate and is bent into a quarter arc shape. The third baffle plate 3313 is opposite to the third blade 3312 and is located on one side of the axis of the rotating shaft 3311. The third baffle plate 3313 is fixedly connected to the auxiliary rotating frame 31.

[0075] The movable end of the telescopic rod 332 is rotatably connected to the rotating shaft 3311. The telescopic rod 332 is fixedly connected to the rotating rod 3321. The rotating rod 3321 is in a round rod shape, and both ends of the axis direction are rotatably connected to the auxiliary rotating frame 31. The axis direction of the rotating rod 3321 is parallel to the axis direction of the rotating shaft 3311.

[0076] The lifting plate 333 is in the shape of a rectangular plate, and one end in the length direction is fixedly connected to the rotating rod 3321, and the lifting plate 333 is set at an angle with the telescopic rod 332. When the river flow rate is greater than the preset flow rate, the lifting plate 333 drives the telescopic rod 332 to make the rotating shaft 3311 slide to the top of the slide slot 311, and the auxiliary drive gear 331 can mesh with the collection gear 32.

[0077] When in use, when the river flow rate is not greater than the preset flow rate, the auxiliary drive gear 331 and the rotating shaft 3311 slide down by their own gravity, so that the first collecting plate 211 is opened only under the gravity of the deposited silt; when the river flow rate is greater than the preset flow rate, the water flow drives the lifting plate 333 to swing, and the lifting plate 333 drives the telescopic rod 332 to swing with the rotating rod 3321 as the rotation axis, and the telescopic rod 332 drives the rotating shaft 3311 to slide up to the top of the slide groove 311, so that the auxiliary drive gear 331 and the collecting gear 32 are in a meshing state, and the water flow drives the third blade 3312 to rotate under the action of the third baffle plate 3313, and the third blade 3312 drives the auxiliary drive gear 331 to rotate, and the auxiliary drive gear 331 intermittently drives the collecting gear 32 to rotate, so that the first collecting plate 211 can intermittently open the first sand inlet hole 2211 with the assistance of the collecting gear 32, so that the first collecting plate 211 is not easy to open the first sand inlet hole 2211 due to the squeezing of the rapids.

[0078] Reference Figure 1 The sand guard plate 1 is connected to an anti-debris component 4, which includes an anti-debris roller 41 and a belt 42. Three anti-debris rollers 41 are provided, one of which is located at the top of the sand guard plate 1, and the other two anti-debris rollers 41 are respectively located on both sides of the sand guard plate 1, and are both arranged close to the bottom of the sand guard plate 1. The axial direction of the anti-debris roller 41 is parallel to the axial direction of the first sand discharge pipe 221, and the anti-debris roller 41 is rotatably connected to the sand guard plate 1.

[0079] The belt 42 is ring-shaped, and its cross-section along the extension direction is rectangular. There are multiple belts 42, and they are all mounted on three anti-trash rollers 41. The belt 42 is in a tensioned state. The multiple belts 42 are arranged along the axial direction of the anti-trash roller 41. The outer surface of the belt 42 is evenly fixed with multiple conveying needles 421 along its own extension direction. The conveying needles 421 are needle-shaped.

[0080] Both ends of the debris-proof roller 41 which is close to the first collecting plate 211 and located at the bottom end of the sand baffle 1 are fixed with a plurality of fourth blades 411 around the axial direction. The fourth blades 411 are in the shape of rectangular sheets. A fourth baffle plate 4111 is provided on the side of the debris-proof roller 41 away from the sand baffle 1. The fourth baffle plate 4111 is in the shape of a rectangular plate and is bent in the shape of a quarter circle. The fourth baffle plate 4111 is opposite to the fourth blade 411 and is located on one side of the axis of the debris-proof roller 41. The fourth baffle plate 4111 is fixedly connected to the sand baffle 1.

[0081] Reference Figure 3A plurality of knocking ropes 412 are fixedly connected to the anti-trash roller 41 at the top of the sand retaining plate 1 in the circumferential and axial directions. The plurality of knocking ropes 412 along the axial direction of the anti-trash roller 41 are respectively located between two adjacent belts 42. A knocking block 413 is fixedly connected to the end of the knocking rope 412 away from the anti-trash roller 41. The knocking block 413 is spherical. A second clearance hole 13 for the rotation of the knocking rope 412 and the knocking block 413 is provided at the top of the sand retaining plate 1. The second clearance hole 13 is rectangular, and its width is greater than the diameter of the knocking block 413.

[0082] When in use, the water flow drives the fourth blade 411 to rotate under the action of the fourth baffle plate 4111, the fourth blade 411 drives the anti-debris roller 41 to rotate, the anti-debris roller 41 drives the belt 42 to rotate, and the conveying needle 421 rotates following the belt 42. When aquatic plants and debris move to the belt 42, the belt 42 carries the aquatic plants and debris through the conveying needle 421, so that the aquatic plants and debris pass over the sand baffle 1, making it difficult for the aquatic plants and debris to block the first sand filter hole 11.

[0083] The debris prevention roller 41 located at the top of the sand retaining plate 1 can drive the knocking rope 412 and the knocking block 413 to rotate when rotating. The knocking block 413 cyclically knocks on the sand retaining plate 1 during the rotation process to apply knocking vibration to the sand retaining plate 1, so that the first sand filter hole 11 is not easily blocked and the deposited sand is easy to be compacted.

[0084] Reference Figure 7 The auxiliary rotating frame 31 is connected to the opening and closing assembly 5, and the opening and closing assembly 5 includes a closing plate 51, a closing gear 52, a closing rack 53, an inertia wheel 54, a magnetic sheet 55 and an iron sheet 56. The closing plate 51 is in the shape of a rectangular plate, and the adapter cover is arranged on the side of the auxiliary rotating frame 31 close to the fourth blade 411. The side of the closing plate 51 close to the sand retaining plate 1 is hinged to the auxiliary rotating frame 31 through a rotating shaft 511. The closing plate 51 is fixedly connected to the rotating shaft 511, and the rotating shaft 511 is rotatably connected to the auxiliary rotating frame 31.

[0085] The closed gear 52 is coaxially fixed to the bottom end of the rotating shaft 511 , and the closed gear 52 is meshed with the closed rack 53 . The closed rack 53 is slidably connected to the sand baffle 1 , and the sliding direction is perpendicular to the board surface of the sand baffle 1 .

[0086] The inertia wheel 54 is located at one end of the anti-trash roller 41 where the fourth blade 411 is provided, and at one end of the anti-trash roller 41 close to the auxiliary rotating frame 31 . The inertia wheel 54 is coaxially fixedly connected to the anti-trash roller 41 .

[0087] The magnetic sheet 55 is in the shape of a rectangular sheet. There are six magnetic sheets 55, and they are all slidably arranged on the side of the inertia wheel 54 away from the anti-trash roller 41. All the magnetic sheets 55 form a regular hexagon, and the center of the regular hexagon coincides with the center of the inertia wheel 54. The sliding direction of the magnetic sheet 55 is the direction approaching or moving away from the center of the inertia wheel 54, and the polarities of the sides of two adjacent magnetic sheets 55 that are close to each other are opposite.

[0088] The iron sheet 56 is in the shape of a rectangular sheet and is located in the regular hexagonal area surrounded by all the magnetic sheets 55. The iron sheet 56 is bent into an arc shape and its diameter is equal to the diameter of the inscribed circle of the regular hexagon surrounded by all the magnetic sheets 55. The iron sheet 56 is located on the side of the regular hexagon surrounded by all the magnetic sheets 55 close to the sand guard plate 1. The iron sheet 56 abuts against and is magnetically connected to part of the magnetic sheets 55 close to the sand guard plate 1. The iron sheet 56 is fixedly connected to the end of the closed rack 53 away from the closed gear 52.

[0089] When the river flow rate is greater than the preset flow rate, the inertia wheel 54 drives the magnetic sheet 55 to slide away from its own center, and the magnetic sheet 55 drives the iron sheet 56 to slide away from the center of the inertia wheel 54 , and the iron sheet 56 opens the closing plate 51 through the closing rack 53 and the closing gear 52 .

[0090] During use, when the river flow rate is greater than the preset flow rate, the water flow drives the fourth blade 411 to rotate faster, so that the anti-debris roller 41 rotates faster, and the anti-debris roller 41 drives the inertia wheel 54 to rotate faster, so as to increase the centrifugal force on the magnetic sheet 55. After the centrifugal force increases, the magnetic sheet 55 slides away from the center of the inertia wheel 54, and the magnetic sheet 55 magnetically drives the iron sheet 56 to slide away from the center of the inertia wheel 54, and the iron sheet 56 drives the closed rack 53 to slide close to the sand retaining plate 1, and the closed rack 53 drives the closed gear 52 to rotate, and the closed gear 52 drives the rotating shaft 511 to rotate, and the rotating shaft 511 drives the closing plate 51 to swing, so as to open the side of the auxiliary rotating frame 31, so that the lifting plate 333 can be driven by the water flow to swing, so that the opening and closing of the closing plate 51 can be automatically controlled according to the water flow.

[0091] The implementation principle of the river sediment collection device for water conservancy projects in the embodiment of the present application is as follows: when in use, the sand retaining plate 1 is placed in the river, and the first sand filter hole 11 and the second sand filter hole 2312 filter the sediment, so that the sediment is deposited between the first collecting plate 211, the first sand discharge pipe 221 and the second collecting plate 231. When the weight of the deposited sediment is greater than the preset deposition weight, the first collecting plate 211 opens the first sand inlet hole 2211, and the second collecting plate 231 opens the second sand inlet hole 2212, so that the sediment can be discharged from the first sand inlet hole 2211. 211 and the second sand inlet hole 2212 flow into the first sand discharge pipe 221, the water flow drives the first spiral conveying rod 222 to rotate through the first blade 2222, and drives the second spiral conveying rod 224 to rotate through the second blade 2241. Under the transportation of the first spiral conveying rod 222 and the second spiral conveying rod 224, the silt is discharged from the first sand discharge pipe 221, the second sand discharge pipe 223 and the sand guide pipe 2231 to the river bank, so that the collection and discharge of silt in the river can be carried out continuously and synchronously, thereby increasing the amount of silt collected.

[0092] When the river flow rate is greater than the preset flow rate, the water flow drives the lifting plate 333 to swing and drives the third blade 3312 to rotate. The lifting plate 333 enables the auxiliary drive gear 331 to engage with the collecting gear 32 through the telescopic rod 332 and the rotating shaft 3311, so that the first collecting plate 211 can intermittently open the first sand inlet hole 2211 under the squeeze of the rapids.

[0093] The water flow drives the fourth blade 411 to rotate, and the fourth blade 411 drives the anti-debris roller 41 to rotate, so that the belt 42 can rotate, and the belt 42 transports water plants and debris to cross the sand retaining plate 1, so that the first sand filtering hole 11 is not easily blocked.

[0094] The debris-proof roller 41 drives the knocking block 413 to knock on the sand retaining plate 1 cyclically, so that the sand retaining plate 1 is subjected to knocking vibration. The debris-proof roller 41 can open the closing plate 51 in a rapid flow through the magnetic sheet 55, the iron sheet 56, the closing rack 53 and the closing gear 52, so that the opening and closing of the closing plate 51 can be automatically controlled according to the water flow.

[0095] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A river sediment collection device for water conservancy projects, characterized in that: The invention comprises a sand retaining plate (1) and a collecting assembly (2), wherein the collecting assembly (2) comprises a first collecting portion (21) and a sand discharging portion (22), wherein the first collecting portion (21) comprises a first collecting plate (211), and the sand discharging portion (22) comprises a first sand discharging pipe (221), a first spiral conveying rod (222), a second sand discharging pipe (223) and a second spiral conveying rod (224); A plurality of first sand filtering holes (11) are provided on the sand retaining plate (1); One end of the first sand discharge pipe (221) is sealed, and the other end is open. A plurality of first sand discharge pipes (221) are provided. The first sand discharge pipes (221) are fixedly penetrated on the sand retaining plate (1), and the axis of the first sand discharge pipe (221) is located in the plane where the sand retaining plate (1) is located. A first sand inlet hole (2211) is provided at the bottom of the pipe wall of the first sand discharge pipe (221) protruding from the water-facing surface of the sand retaining plate (1); A plurality of first collecting plates (211) are provided, and correspond one to one with the first sand discharge pipes (221); one side of the first collecting plate (211) is hinged to the sand retaining plate (1) via a first hinge shaft (2111); a portion of the first collecting plate (211) close to the first hinge shaft (2111) is bent in an arc shape and covers the first sand inlet hole (2211); and a density of the first collecting plate (211) is less than a density of river water; A plurality of first spiral conveying rods (222) are provided, and correspond one to one with the first sand discharge pipes (221). The first spiral conveying rods (222) are rotatably provided in the first sand discharge pipe (221). One end of the first spiral conveying rod (222) close to the opening of the first sand discharge pipe (221) is coaxially fixedly connected with a rotating cylinder (2221). The rotating cylinder (2221) is rotatably connected with the first sand discharge pipe (221). A plurality of first blades (2222) are fixedly provided on the rotating cylinder (2221) around the axis direction. A first clearance hole (12) for the first blades (2222) to rotate is provided on the sand baffle plate (1). A plurality of first baffle plates (2223) corresponding one to one with the first sand discharge pipes (221) are fixedly provided on one side of the sand baffle plate (1) close to the first collecting plate (211). The first baffle plates (2223) are directly opposite to the first blades (2222) and are located on one side of the axis of the first sand discharge pipe (221). Both ends of the second sand discharge pipe (223) are sealed and fixedly arranged on a side of the sand retaining plate (1) close to the rotating cylinder (2221). The second sand discharge pipe (223) is connected to all the first sand discharge pipes (221) through the rotating cylinder (2221) and is rotationally connected to all the rotating cylinders (2221); The second spiral conveying rod (224) is rotatably disposed in the second sand discharge pipe (223), the bottom end of the second spiral conveying rod (224) passes through the bottom end of the second sand discharge pipe (223), and a plurality of second blades (2241) are fixedly disposed around the axis direction, and a second baffle plate (2242) is fixedly connected to a side of the second sand discharge pipe (223) close to the first collecting plate (211), the second baffle plate (2242) is directly opposite to the second blade (2241), and is located on one side of the axis of the second sand discharge pipe (223); The top end of the second sand discharge pipe (223) is connected to a sand guide pipe (2231), and the sand guide pipe (2231) is used to guide the silt to the river bank; The first collecting plate (211) is fixedly connected to a first sand pushing plate (212) via a first connecting rod (2112), and the first sand pushing plate (212) is arranged close to the first sand discharge pipe (221).

2. A river sediment collection device for water conservancy projects according to claim 1, characterized in that: The collecting assembly (2) further comprises a second collecting portion (23), the second collecting portion (23) comprising a second collecting plate (231), a plurality of second collecting plates (231) are provided, and the second collecting plates (231) correspond one to one with the first sand discharge pipes (221), a second sand inlet hole (2212) is provided at the bottom of the first sand discharge pipe (221) away from the first collecting plate (211), one side of the second collecting plate (231) is hinged to the sand retaining plate (1) via a second hinge shaft (2311), and the second collecting plate (231) is provided with a plurality of second collecting plates (231) and a second sand discharge pipe (221) and a second sand discharge pipe (221) are provided with a second sand inlet hole (2212) at the bottom of the first sand discharge pipe (221) away from the first collecting plate (211), and a second collecting plate (231) is hinged to the sand retaining plate (1) via a second hinge shaft (2311). 1) The portion close to the second hinge shaft (2311) is bent in an arc shape and is covered at the second sand inlet hole (2212); the density of the second collecting plate (231) is less than the density of river water; the middle portion of the second collecting plate (231) is bent, and the side away from the second hinge shaft (2311) is used to abut against the sand retaining plate (1); the second collecting plate (231) is provided with a plurality of second sand filtering holes (2312); the size of the second sand filtering holes (2312) is smaller than the size of the first sand filtering holes (11).

3. A river sediment collection device for water conservancy projects according to claim 2, characterized in that: The second collecting plate (231) is fixedly connected to a second sand pushing plate (232) via a second connecting rod (2313), and the second sand pushing plate (232) is arranged close to the first sand discharge pipe (221).

4. A river sediment collection device for water conservancy projects according to claim 1, characterized in that: An auxiliary rotation assembly (3) is arranged on a side of the sand shield (1) away from the second sand discharge pipe (223), the auxiliary rotation assembly (3) comprising an auxiliary rotation frame (31), a collecting gear (32) and an auxiliary drive part (33), a side wall of the auxiliary rotation frame (31) is fixedly connected to the sand shield (1), a plurality of the collecting gear (32) and the auxiliary drive part (33) are arranged, and each of the collecting gear (32) and the auxiliary drive part (33) are arranged in the auxiliary rotation frame (31); The first hinge shaft (2111) is fixedly connected to the first collecting plate (211); one end of the first hinge shaft (2111) close to the auxiliary rotating frame (31) rotates and penetrates into the auxiliary rotating frame (31); the collecting gear (32) is coaxially fixedly connected to the first hinge shaft (2111); the auxiliary driving part (33) is connected to the auxiliary rotating frame (31) and is used to intermittently drive the collecting gear (32) to rotate when the flow rate of the river is greater than a preset flow rate.

5. A river sediment collection device for water conservancy projects according to claim 4, characterized in that: The auxiliary drive part (33) comprises an auxiliary drive gear (331), a telescopic rod (332) and a lifting plate (333); the auxiliary drive gear (331) is an incomplete gear and is coaxially fixedly connected with a rotating shaft (3311); both ends of the rotating shaft (3311) are slidably arranged in a sliding groove (311) provided on the inner wall of the auxiliary rotating frame (31); the rotating shaft (3311) is rotatably connected to the auxiliary rotating frame (31) around its own axis direction; The movable end of the telescopic rod (332) is rotatably connected to the rotating shaft (3311), the telescopic rod (332) is fixedly connected to the rotating rod (3321), both ends of the rotating rod (3321) are rotatably connected to the auxiliary rotating frame (31), one end of the lifting plate (333) is fixedly connected to the rotating rod (3321), when the river flow rate is greater than the preset flow rate, the lifting plate (333) drives the telescopic rod (332) to make the rotating shaft (3311) slide to the top of the sliding groove (311), and the auxiliary driving gear (331) can mesh with the collecting gear (32); A plurality of third blades (3312) are fixedly arranged around the axis direction of the rotating shaft (3311); a third baffle plate (3313) is arranged on a side of the rotating shaft (3311) close to the first collecting plate (211); the third baffle plate (3313) is directly opposite to the third blades (3312) and is located on one side of the axis of the rotating shaft (3311); and the third baffle plate (3313) is fixedly connected to the auxiliary rotating frame (31).

6. A river sediment collection device for water conservancy projects according to claim 4, characterized in that: The sand shield (1) is connected to an anti-debris component (4), the anti-debris component (4) comprising an anti-debris roller (41) and a belt (42), three anti-debris rollers (41) are provided, one of the anti-debris rollers (41) is located at the top of the sand shield (1), and the other two anti-debris rollers (41) are respectively located on both sides of the sand shield (1), and are both arranged close to the bottom of the sand shield (1), the anti-debris rollers (41) are parallel to the first sand discharge pipe (221), and are rotatably connected to the sand shield (1); A plurality of belts (42) are provided, and all are sleeved on three anti-trash rollers (41), and the plurality of belts (42) are arranged along the axial direction of the anti-trash roller (41); both ends of the anti-trash roller (41) close to the first collecting plate (211) and located at the bottom end of the sand baffle (1) are fixedly provided with a plurality of fourth blades (411) around the axial direction; a fourth baffle plate (4111) is provided on the side of the anti-trash roller (41) away from the sand baffle (1); the fourth baffle plate (4111) is directly opposite to the fourth blade (411) and is located on one side of the axial line of the anti-trash roller (41); and the fourth baffle plate (4111) is fixedly connected to the sand baffle (1).

7. A river sediment collection device for water conservancy projects according to claim 6, characterized in that: The outer surface of the belt (42) is fixedly provided with a plurality of conveying needles (421) along its extension direction.

8. A river sediment collection device for water conservancy projects according to claim 6, characterized in that: A plurality of knocking ropes (412) are fixedly connected to the anti-trash roller (41) at the top end of the sand deflector (1) in both the circumferential and axial directions. The plurality of knocking ropes (412) along the axial direction of the anti-trash roller (41) are respectively located between two adjacent belts (42). A knocking block (413) is fixedly connected to one end of the knocking rope (412) away from the anti-trash roller (41). A second clearance hole (13) for the knocking rope (412) and the knocking block (413) to rotate is provided at the top end of the sand deflector (1).

9. A river sediment collection device for water conservancy projects according to claim 6, characterized in that: The auxiliary rotating frame (31) is connected to an opening and closing assembly (5), the opening and closing assembly (5) comprising a closing plate (51), a closing gear (52) and a closing rack (53), the closing plate (51) is covered on a side of the auxiliary rotating frame (31) close to the first collecting plate (211), the side of the closing plate (51) close to the sand retaining plate (1) is hinged to the auxiliary rotating frame (31) through a rotating shaft (511), and the closing plate (51) is fixedly connected to the rotating shaft (511); The closed gear (52) is coaxially fixed to the bottom end of the rotating shaft (511), the closed gear (52) is meshed with the closed rack (53), the closed rack (53) is slidably connected to the sand retaining plate (1) in a direction perpendicular to the plate surface of the sand retaining plate (1), and one end of the closed rack (53) away from the closed gear (52) is connected to an anti-trash roller (41) provided with a fourth blade (411), and when the flow rate of the river is greater than a preset flow rate, the anti-trash roller (41) opens the closed plate (51) through the closed rack (53) and the closed gear (52).

10. A river sediment collection device for water conservancy projects according to claim 9, characterized in that: The opening and closing assembly (5) further comprises an inertia wheel (54), a magnetic sheet (55) and an iron sheet (56); the inertia wheel (54) is coaxially fixed to an end of the anti-trash roller (41) provided with the fourth blade (411) close to the auxiliary rotating frame (31); There are more than three magnetic sheets (55), and all of them are slidably arranged on a side of the inertia wheel (54) away from the anti-trash roller (41), all of the magnetic sheets (55) form a regular polygon, the sliding direction of the magnetic sheets (55) is the direction approaching or away from the center of the inertia wheel (54), and the polarities of the sides of two adjacent magnetic sheets (55) close to each other are opposite; The iron sheet (56) is located in a regular polygonal area surrounded by all the magnetic sheets (55), the iron sheet (56) is bent into an arc shape, and the diameter is equal to the diameter of the inscribed circle of the regular polygon surrounded by all the magnetic sheets (55), the iron sheet (56) is located on one side of the regular polygon surrounded by all the magnetic sheets (55) close to the sand baffle (1), the iron sheet (56) abuts against and is magnetically connected to some of the magnetic sheets (55), and the iron sheet (56) is fixedly connected to one end of the closed rack (53) away from the closed gear (52).

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