River surface trash holding device for water conservancy project

Abstract

The invention belongs to the technical field of trash holding devices, and particularly relates to a river trash holding device for hydraulic engineering, which comprises a left dam and a right dam, the right dam is located on one side of the left dam, a trash holding plate is fixedly connected to one side wall of the right dam, and a multi-stage trash rack is obliquely and fixedly connected to one side wall of the left dam. The other side wall of the multi-stage trash rack is fixedly connected with the trash blocking plate in an inclined mode, the right dam is connected with a trash cleaning assembly, and the top wall of the multi-stage trash rack is connected with a trash stirring assembly. The inclined multi-stage trash rack is adopted, classified blocking and guiding of trash are achieved, power is synchronously provided for a trash stirring assembly and a trash cleaning assembly through water flow impact, a sliding block is used for driving a trash stirring plate to stir the blocked trash to a trash blocking plate, a reciprocating lead screw is used for driving a trash cleaning rake to reciprocate, and the collected trash is continuously fished. And the garbage is overturned and dumped into the garbage collection box.

Description

Technical Field

[0001] The invention belongs to the technical field of pollution interception devices, and in particular relates to a river surface pollution interception device for water conservancy projects. Background Art

[0002] Water environment and environmental protection projects usually use pollution-blocking devices to block garbage in the water. Traditional pollution-blocking devices only set up a layer of trash racks to block garbage. The intercepted garbage accumulates on the river surface and blocks the trash racks, reducing the flow rate of the water. When cleaning, a garbage rake is usually used to salvage the garbage blocked by the trash rack. However, this method can only clean the garbage within its own salvage range, and cannot salvage garbage outside the range. After the garbage is fished out of the river, it cannot be dumped directly on the shore. The garbage salvaged by the garbage rake needs to be removed before it can be salvaged again, and the garbage cannot be salvaged in real time.

[0003] Therefore, a river surface pollution intercepting device for water conservancy projects is needed to solve the technical problems in the prior art that garbage outside the range of the garbage cleaning rake cannot be salvaged and the garbage needs to be removed before it can be salvaged again. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a river surface garbage intercepting device for water conservancy projects, which utilizes obliquely placed multi-stage garbage racks to classify and intercept garbage, and utilizes the impact of water flow to gradually move the garbage closer to the garbage blocking board on the inclined multi-stage garbage rack, and continuously move the garbage. When the garbage is moved to the garbage blocking board, a garbage cleaning rake salvages the garbage, thereby solving the technical problem in the prior art that garbage outside the range of the garbage cleaning rake cannot be salvaged. The collected garbage is salvaged while the garbage is moved. During the salvaging process, the garbage is turned over and dumped, and preparation is made for the next salvage, thereby solving the technical problem in the prior art that the garbage must be removed before it can be salvaged again.

[0005] The technical solution adopted by the present invention is as follows: a river surface pollution blocking device for water conservancy projects, comprising a left dam and a right dam, the right dam being located on one side of the left dam, a pollution blocking plate being fixedly connected to one side wall of the right dam, a multi-stage trash rack being obliquely fixedly connected to one side wall of the left dam, the other side wall of the multi-stage trash rack being obliquely fixedly connected to the pollution blocking plate, a pollution cleaning assembly being connected to the right dam, a garbage shifting assembly being connected to the top wall of the multi-stage trash rack, a power assembly being fixedly connected to the side walls of the left and right dams, and the garbage shifting assembly and the pollution cleaning assembly being respectively transmission-connected to the power assembly.

[0006] Furthermore, a narrow limiting hole and a wide limiting hole are penetrated through the side wall of the dirt retaining plate, the narrow limiting hole is connected to the lower end of the wide limiting hole, and the narrow limiting hole and the wide limiting hole have a smooth transition.

[0007] Furthermore, the cleaning assembly includes a reciprocating screw and a connecting rod. The bottom end of the reciprocating screw is rotatably connected to the right dam side wall. A sliding locking block is threadedly sleeved on the reciprocating screw. The sliding locking block is longitudinally slidably connected to the right dam. One end of the connecting rod rotates through the sliding locking block, and the other end of the connecting rod is longitudinally slidably connected to the right dam side wall.

[0008] Furthermore, the connecting rod is fixedly connected with a limit block in a linear array. When the limit block is located in a narrow limit hole, the two side walls of the limit block are slidably engaged with the inner wall of the narrow limit hole. When the limit block is located in a wide limit hole, the limit block is movably arranged. The connecting rod is fixedly connected with a cleaning rake in a linear array. The cleaning rake and the dirt blocking plate are arranged alternately. A flip gear is coaxially fixedly connected to the connecting rod, and a rack is fixedly connected to one side wall of the right dam.

[0009] Furthermore, the garbage moving assembly includes a guide rail and a transmission rod, the guide rail is fixedly connected to the top wall of the multi-stage trash rack, a synchronous gear is rotatably provided on one side wall inside the guide rail, and a synchronous driven gear is rotatably provided on the other side wall inside the guide rail, the transmission rod and the synchronous gear are coaxially penetrated and fixedly connected, one end of the transmission rod is coaxially fixedly connected to the moving plate input bevel gear, and a synchronous toothed belt is sleeved on the synchronous gear and the synchronous driven gear.

[0010] Furthermore, a slider is connected to the guide rail, and the slider slides along the guide rail track. The slider is fixedly connected to the outer wall of the synchronous toothed belt, and a garbage moving plate is hingedly connected to the slider. The side edge of the top wall of the multi-stage trash rack is laterally slidably connected to a limit bar, and the garbage moving plate is longitudinally slidably connected to the limit bar.

[0011] Furthermore, the power assembly includes a chassis, a propeller and a water flow guide shell, the chassis is fixedly connected to the side walls of the left dam and the right dam, the water flow guide shell is fixedly connected to the bottom wall inside the chassis, the propeller is rotatably connected to one side of the water flow guide shell, and a first transmission bevel gear is rotatably connected inside the water flow guide shell, and the first transmission bevel gear is coaxially fixedly connected to the propeller.

[0012] Furthermore, the chassis is connected with a first hydraulic transmission shaft and a first power output shaft, one end of the first hydraulic transmission shaft rotates and passes through the chassis and the water flow guide shell, the first driven bevel gear is coaxially fixedly connected at both ends of the first hydraulic transmission shaft, the first driven bevel gear at the bottom end is meshed with the first transmission bevel gear, one end of the first power output shaft is rotatably connected to the top wall of the box body, the other end of the first power output shaft is rotatably connected to the top wall of the left dam, the second driven bevel gear is coaxially fixedly connected at both ends of the first power output shaft, the second driven bevel gear at one end is meshed with the first driven bevel gear at the top, and the second driven bevel gear at the other end is meshed with the input bevel gear of the toggle plate.

[0013] Furthermore, the power assembly also includes a driving pulley, a driven pulley and a synchronous belt. The driving pulley is coaxially fixedly connected to the first driven bevel gear at the top, the driven pulley is coaxially fixedly connected to the reciprocating screw, and the synchronous belt is sleeved on the driving pulley and the driven pulley.

[0014] After adopting the above structure, the beneficial effects of the present invention are as follows: 1. The inclined multi-stage trash rack is used to achieve classified interception of garbage. Under the impact of water flow, the garbage moves along the multi-stage trash rack to the trash plate. The water flow impacts the propeller to rotate, providing power for the garbage moving component and the garbage cleaning component respectively. The slider drives the garbage moving plate to continuously move the blocked garbage to the trash plate. At the same time, the garbage collected by the wave is salvaged and turned over and dumped into the garbage collection box; 2. The water flow impacts the propeller to rotate, and the water flow is used to provide power for the garbage moving component and the pollution cleaning component respectively; 3. The second driven bevel gear is used to drive the input bevel gear of the toggle plate to rotate, and finally the synchronous toothed belt drives the slider to slide along the guide track. The slider drives the garbage toggle plate to move the garbage to the garbage blocking plate. The garbage toggle plate rotates on the slider. The garbage toggle plate cooperates with the limit bar to make the garbage toggle plate vertically downward, so as to achieve the beneficial effect of continuously moving the garbage and prevent the garbage toggle plate from hindering the operation of the garbage cleaning component. 4. Use synchronous transmission to provide power for the rotation of the reciprocating screw rod, use the reciprocating screw rod to drive the cleaning rake to move back and forth, continuously salvage the garbage at the garbage blocking plate, and use the meshing action of the flip gear and the rack to realize the rotation of the cleaning rake during the movement. When the garbage is salvaged and moves upward, the cleaning rake flips and dumps the garbage into the garbage collection box. When moving downward, the cleaning rake flips in the opposite direction and returns to a horizontal state. Use a narrow limit hole to limit the rotation of the limit block to ensure that the cleaning rake remains in a horizontal state during the movement to prevent the garbage from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present solution and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention.

[0016] Figure 1 This is a schematic diagram of the overall structure of a river surface pollution interception device for water conservancy projects proposed by the present invention; Figure 2 This is a schematic diagram of the overall structure of a river surface pollution interception device for water conservancy projects proposed by the present invention from another perspective; Figure 3 This is a rear view overall structural diagram of a river surface pollution interception device for water conservancy projects proposed by the present invention; Figure 4This is a schematic diagram of the overall structure of a river surface pollution interception device for water conservancy projects proposed by the present invention; Figure 5 This is a schematic diagram of the connection structure of the pollution-clearing components of a river surface pollution-blocking device for water conservancy projects proposed by the present invention; Figure 6 A schematic diagram of the connection structure of the pollution-clearing components of a river surface pollution-blocking device for a water conservancy project proposed by the present invention from another perspective; Figure 7 A schematic diagram of the connection structure of a garbage moving assembly of a river surface garbage interception device for a water conservancy project proposed by the present invention; Figure 8 This is a schematic cross-sectional structure diagram of a power assembly of a river surface pollution interception device for water conservancy projects proposed by the present invention; Figure 9 The present invention is a schematic diagram of the chassis connection structure of a river surface pollution interception device for water conservancy projects.

[0017] In the attached drawings: 1, left dam, 2, right dam, 3, multi-stage trash rack, 4, trash cleaning assembly, 5, power assembly, 6, trash moving assembly, 7, trash collecting box, 8, trash blocking plate, 403, reciprocating screw, 405, sliding locking block, 408, connecting rod, 409, trash cleaning rake, 410, limit block, 412, flip gear, 413, rack, 501, chassis, 502, driving pulley, 503, driven pulley, 504, synchronous belt, 505, first transmission bevel gear, 507, the first hydraulic transmission shaft, 509, the first driven bevel gear, 512, the first power output shaft, 513, the second driven bevel gear, 514, the water flow guide shell, 524, the propeller, 601, the guide rail, 602, the synchronous gear, 603, the synchronous driven gear, 604, the transmission rod, 605, the toggle plate input bevel gear, 606, the synchronous toothed belt, 607, the slider, 608, the garbage toggle plate, 609, the limit strip, 801, the narrow limit hole, 802, the wide limit hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0020] Embodiment 1, as Figures 1-9 As shown, a river surface pollution blocking device for water conservancy projects includes a left dam 1 and a right dam 2, the right dam 2 is located on one side of the left dam 1, and a pollution blocking plate 8 is fixedly connected to one side wall of the right dam 2, a multi-stage trash rack 3 is obliquely fixedly connected to one side wall of the left dam 1, and the other side wall of the multi-stage trash rack 3 is obliquely fixedly connected to the pollution blocking plate 8, a pollution cleaning component 4 is connected to the right dam 2, and a garbage moving component 6 is connected to the top wall of the multi-stage trash rack 3, and a power component 5 is fixedly connected to the side walls of the left dam 1 and the right dam 2, and the garbage moving component 6 and the pollution cleaning component 4 are respectively connected to the power component 5 in transmission connection.

[0021] like Figures 1-4 and Figure 6 As shown, a narrow limiting hole 801 and a wide limiting hole 802 are penetrated through the side wall of the dirt retaining plate 8, the narrow limiting hole 801 is connected to the lower end of the wide limiting hole 802, and the narrow limiting hole 801 and the wide limiting hole 802 have a smooth transition.

[0022] like Figures 1-6 As shown, the cleaning assembly 4 includes a reciprocating screw rod 403 and a connecting rod 408. The bottom end of the reciprocating screw rod 403 is rotatably connected to the side wall of the right dam 2. A sliding locking block 405 is threadedly sleeved on the reciprocating screw rod 403. The sliding locking block 405 is longitudinally slidably connected to the right dam 2. One end of the connecting rod 408 rotates through the sliding locking block 405, and the other end of the connecting rod 408 is longitudinally slidably connected to the side wall of the right dam 2.

[0023] like Figures 1-6As shown, the connecting rod 408 is fixedly connected with a limit block 410 in a linear array. When the limit block 410 is located in the narrow limit hole 801, the two side walls of the limit block 410 are slidably engaged with the inner wall of the narrow limit hole 801. When the limit block 410 is located in the wide limit hole 802, the limit block 410 is movably arranged. The connecting rod 408 is fixedly connected with a cleaning rake 409 in a linear array. The cleaning rake 409 is staggered with the dirt blocking plate 8. The connecting rod 408 is coaxially fixedly connected with a flip gear 412. A rack 413 is fixedly connected to one side wall of the right dam 2. The bottom end of the rack 413 and the bottom end of the wide limit hole 802 are arranged at the same height. The flip gear 412 is meshed with the rack 413 during the vertical movement.

[0024] like Figures 1-4 , Figure 7 and Figure 9 As shown, the garbage moving assembly 6 includes a guide rail 601 and a transmission rod 604, the guide rail 601 is fixedly connected to the top wall of the multi-stage trash rack 3, a synchronous gear 602 is rotatably provided on one side wall of the guide rail 601, and a synchronous driven gear 603 is rotatably provided on the other side wall of the guide rail 601, the transmission rod 604 is coaxially penetrated and fixedly connected with the synchronous gear 602, one end of the transmission rod 604 is coaxially fixedly connected with a moving plate input bevel gear 605, and a synchronous toothed belt 606 is sleeved on the synchronous gear 602 and the synchronous driven gear 603.

[0025] like Figures 1-4 and Figure 7 As shown, the guide rail 601 is connected with a slider 607, and the slider 607 slides along the track of the guide rail 601. The slider 607 is fixedly connected to the outer wall of the synchronous toothed belt 606. The slider 607 is hingedly connected with a garbage shifting plate 608. The side edge of the top wall of the multi-stage trash rack 3 is laterally slidably connected to a limit bar 609, and the garbage shifting plate 608 is longitudinally slidably connected to the limit bar 609. When the slider 607 drives the garbage shifting plate 608 to slide along the track of the guide rail 601, the garbage shifting plate 608 moves vertically downward to prevent the garbage shifting plate 608 from obstructing the operation of the cleaning component 4.

[0026] like Figures 1-4 and Figures 8-9 As shown, the power assembly 5 includes a chassis 501, a propeller 524 and a water flow guide shell 514, the chassis 501 is fixedly connected to the side walls of the left dam 1 and the right dam 2, the water flow guide shell 514 is fixedly connected to the inner bottom wall of the chassis 501, the propeller 524 is rotatably connected to one side of the water flow guide shell 514, and a first transmission bevel gear 505 is rotatably connected inside the water flow guide shell 514, and the first transmission bevel gear 505 is coaxially fixedly connected to the propeller 524.

[0027] like Figures 1-4 andFigures 8-9 As shown, a first hydraulic transmission shaft 507 and a first power output shaft 512 are connected to the chassis 501. One end of the first hydraulic transmission shaft 507 rotatably penetrates through the chassis 501 and into the water flow guiding housing 514. First driven bevel gears 509 are coaxially and fixedly connected to both ends of the first hydraulic transmission shaft 507. The first driven bevel gear 509 at the bottom end meshes with a first driving bevel gear 505. One end of the first power output shaft 512 is rotatably connected to the top wall of the housing 501, and the other end of the first power output shaft 512 is rotatably connected to the top wall of the left dam 1. Second driven bevel gears 513 are coaxially and fixedly connected to both ends of the first power output shaft 512. The second driven bevel gear 513 at one end meshes with the first driven bevel gear 509 at the top end, and the second driven bevel gear 51 at the other end meshes with a toggle plate input bevel gear 605 to provide power for the garbage toggling assembly 6.

[0028] As Figures 1-4 and Figures 8-9 shown, the power assembly 5 further includes a driving pulley 502, a driven pulley 503, and a timing belt 504. The driving pulley 502 is coaxially and fixedly connected to the first driven bevel gear 509 at the top end. The driven pulley 503 is coaxially and fixedly connected to the reciprocating lead screw 403. The timing belt 504 is sleeved on the driving pulley 502 and the driven pulley 503 to provide power for the dirt cleaning assembly 4.

[0029] During specific use, the garbage flows towards the obliquely arranged multi - stage trash racks 3. The multi - stage trash racks 3 conduct multi - stage interception of the garbage. The water flow impacts the garbage intercepted by the multi - stage trash racks 3, and the garbage is guided along the multi - stage trash racks 3 towards the position of the trash retaining plate 8. The water flow passes through the multi - stage trash racks 3 and flows towards the chassis 501. The water flow guiding housing 514 guides the water flow, and the water flow impacts the propeller 524 to rotate. The propeller 524 drives the first driving bevel gear 505 to rotate. The first driving bevel gear 505 drives the first hydraulic transmission shaft 507 to rotate through the first driven bevel gear 509 at the bottom end. The first driven bevel gear 509 at the top end drives the second driven bevel gear 513 at one end and the driving pulley 502 to rotate; To move the garbage: the second driven bevel gear 513 at one end drives the first power output shaft 512 to rotate, the second driven bevel gear 513 at the other end drives the toggle plate input bevel gear 605 to rotate, the toggle plate input bevel gear 605 drives the transmission rod 604 and the synchronous gear 602 to rotate, the synchronous gear 602 drives the synchronous toothed belt 606 and the synchronous driven gear 603 to rotate, the synchronous toothed belt 606 drives the slider 607 to slide on the guide rail 601 along the track of the guide rail 601, the slider 607 drives the garbage toggle plate 608 to move, and the garbage The toggle plate 608 drives the limit bar 609 to move, and the garbage toggle plate 608 to toggle the blocked garbage to the trash blocking plate 8. When the garbage toggle plate 608 is close to the trash blocking plate 8, the slider 607 gradually moves to the upper side of the track of the guide rail 601. At the same time, the garbage toggle plate 608 moves on the limit bar 609, and the garbage toggle plate 608 is in a vertical state, blocking the garbage toggle plate 608 from moving toward the trash blocking plate 8. The slider 607 drives the garbage toggle plate 608 to move to the initial position, and the slider 607 drives the garbage toggle plate 608 to continuously toggle the garbage. Garbage salvage and transportation: The driving pulley 502 drives the driven pulley 503 to rotate through the synchronous belt 504, and the driven pulley 503 drives the reciprocating screw 403 to rotate, and the reciprocating screw 403 drives the sliding locking block 405 to move, and the sliding locking block 405 moves upward from the lower end of the reciprocating screw 403, and the sliding locking block 405 drives the connecting rod 408 to move upward, and the cleaning rake 409 moves upward with the connecting rod 408, and the garbage salvage toggle plate 608 is moved to the garbage at the garbage blocking plate 8, and the limit block 410 moves in the narrow limit hole 801, and the limit block 410 is affected by The narrow limit hole 801 limits the connection rod 408, and the cleaning rake 409 is in a horizontal state during the process of salvaging garbage. When the limit block 410 moves to the wide limit hole 802, the flip gear 412 meshes with the rack 413, and the flip gear 412 rotates, driving the connection rod 408 to rotate. The limit block 410 is not limited by the wide limit hole 802, and the connection rod 408 drives the limit block 410 to rotate in the wide limit hole 802. The connection rod 408 drives the cleaning rake 409 to rotate, and the sliding locking block 405 moves to the upper end of the reciprocating screw rod 403. , stops moving upward, the cleaning rake 409 rotates to a vertical state, dumps the garbage into the garbage collection box 7, completes the garbage salvage and transports it to the shore, the reciprocating screw 403 continues to rotate, the sliding locking block 405 moves in the opposite direction, drives the connecting rod 408 to move downward, the flip gear 412 rotates in the opposite direction, drives the connecting rod 408 to rotate in the opposite direction, the connecting rod 408 drives the cleaning rake 409 to rotate in the opposite direction, and when the limit block 410 moves to the narrow limit hole 801, the flip gear 412 leaves the rack 413, the flip gear 412 stops rotating, and the limit block 410 moves The cleaning rake 409 then moves to the narrow limit hole 801, and the narrow limit hole 801 limits the rotation of the limit block 410, and the connecting rod 408 stops rotating, thereby stopping the rotation of the cleaning rake 409. At this time, the cleaning rake 409 returns to a horizontal state, and the sliding locking block 405 moves to the lower end of the reciprocating screw rod 403, and the limit block 410 moves to the lower end of the narrow limit hole 801. The sliding locking block 405 moves in the opposite direction, driving the connecting rod 408 to move upward, and the connecting rod 408 drives the cleaning rake 409 to move upward, and the garbage that is moved by the garbage moving plate 608 to the garbage blocking plate 8 is salvaged and transported for the next time.

[0030] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural modes and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the scope of protection of the present invention.

Claims

1. A river surface pollution interception device for a water conservancy project, comprising a left dam (1) and a right dam (2), wherein the right dam (2) is located on one side of the left dam (1), and is characterized in that: A trash plate (8) is fixedly connected to one side wall of the right dam (2), a multi-stage trash rack (3) is obliquely fixedly connected to one side wall of the left dam (1), the other side wall of the multi-stage trash rack (3) is obliquely fixedly connected to the trash plate (8), a trash cleaning assembly (4) is connected to the top of the right dam (2), a trash moving assembly (6) is connected to the top wall of the multi-stage trash rack (3), a power assembly (5) is fixedly connected to the side wall of the left dam (1) and the side wall of the right dam (2), and the trash moving assembly (6) and the trash cleaning assembly (4) are respectively connected to the power assembly (5) in transmission connection.

2. A river surface pollution interception device for water conservancy projects according to claim 1, characterized in that: A narrow limiting hole (801) and a wide limiting hole (802) are provided through the side wall of the trash retaining plate (8); the narrow limiting hole (801) is connected to the lower end of the wide limiting hole (802); and the narrow limiting hole (801) and the wide limiting hole (802) are smoothly transitioned.

3. A river surface pollution interception device for water conservancy projects according to claim 2, characterized in that: The cleaning assembly (4) comprises a reciprocating screw (403) and a connecting rod (408); the bottom end of the reciprocating screw (403) is rotatably connected to the side wall of the right dam (2); the reciprocating screw (403) is arranged in a transmission arrangement with a power assembly (5); a sliding locking block (405) is threadedly sleeved on the reciprocating screw (403); the sliding locking block (405) is longitudinally slidably connected to the right dam (2); one end of the connecting rod (408) rotates through the sliding locking block (405); and the other end of the connecting rod (408) is longitudinally slidably connected to the side wall of the right dam (2).

4. A river surface pollution interception device for water conservancy projects according to claim 3, characterized in that: The connection rod (408) is fixedly connected to a limiting block (410) in a linear array. When the limiting block (410) is located in the narrow limiting hole (801), the two side walls of the limiting block (410) are slidably engaged with the inner wall of the narrow limiting hole (801). When the limiting block (410) is located in the wide limiting hole (802), the limiting block (410) is movably arranged.

5. A river surface pollution interception device for water conservancy projects according to claim 4, characterized in that: The trash moving assembly (6) comprises a guide rail (601), the guide rail (601) being fixedly connected to the top wall of the multi-stage trash rack (3), a slider (607) being connected to the guide rail (601), the slider (607) sliding along the track of the guide rail (601), and the slider (607) being arranged in transmission with the power assembly (5).

6. A river surface pollution interception device for water conservancy projects according to claim 5, characterized in that: A trash moving plate (608) is hingedly connected to the slider (607); the top wall side of the multi-stage trash rack (3) is slidably connected to the limit strip (609) in a transverse manner; and the trash moving plate (608) is slidably connected to the limit strip (609) in a longitudinal manner.

7. A river surface pollution interception device for water conservancy projects according to claim 4, characterized in that: The connecting rods (408) are fixedly connected to dirt cleaning rakes (409) in a linear array, and the dirt cleaning rakes (409) and the dirt blocking plates (8) are arranged in a staggered manner.

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