CN221030389U - A dredging device for water conservancy project construction - Google Patents

Abstract

The utility model relates to the technical field of hydraulic engineering construction and discloses a dredging device for hydraulic engineering construction, which comprises a filter box, wherein a filter plate is arranged in the filter box, one side of the lower end of the filter box is communicated with a drain pipe lower than the filter plate, one end of the filter box is provided with a mud outlet, a mud inlet unit is arranged on the filter box, a driving unit is arranged in the filter box, an extrusion mud cleaning unit is driven on the driving unit, and the driving unit drives the extrusion mud cleaning unit to reciprocate in the filter box; according to the utility model, the drive unit is used for driving the extrusion mud cleaning unit to move, the extrusion mud cleaning unit can extrude the mud conveyed into the filter box by the mud inlet unit in the moving process and push out the filter box from the mud outlet, so that the water in the mud is separated and filtered by the filter plate to fall into the filter box, the whole structure is simple, the water in the mud can be efficiently treated, and the river dredging efficiency in hydraulic engineering construction is improved.

Description

Dredging device for hydraulic engineering construction

Technical Field

The utility model relates to the technical field of hydraulic engineering construction, in particular to a dredging device for hydraulic engineering construction.

Background

River dredging, namely, treating sludge deposited at the bottom of a river, wherein the river is used as a carrier for conveying, soil migration is caused in the running process, the deposition of the soil is a main cause of river siltation, the daily accumulated sludge in the river affects the normal operation of various functions of river flood control, drainage, irrigation, water supply, navigation and the like, at present, the river dredging mostly adopts a ship body to bear a dredging pump, then the sludge on a river bed is adsorbed, temporary storage is carried out on the ship body, and finally centralized treatment is carried out.

Prior art is as the river course dredging equipment of publication No. CN218687232U discloses a hydraulic engineering construction, including the header tank, header tank top one side fixedly connected with water tank, water tank top fixedly connected with cartridge filter, cartridge filter top left side fixedly connected with import, cartridge filter bottom right side fixedly connected with export, cartridge filter downside is provided with a plurality of drainage holes, the cartridge filter is inside to be provided with the pivot, pivot outside fixedly connected with auger, pivot left end swivelling joint is in the cartridge filter left side, cartridge filter left side fixedly connected with rotating electrical machines. According to the utility model, sludge is pushed into the sludge tank through the cooperation of the filter cylinder, the rotating shaft, the auger, the rotating motor, the push plate, the compression spring, the pushing-down stick, the hydraulic cylinder III and the valve, so that the collection and temporary storage are completed, the separation treatment process of the sludge and water is automatically realized, and the dredging efficiency of a river channel is improved.

The prior art has obvious beneficial effects, but has the following defects:

According to the hydraulic engineering dredging device, the two squeeze plates are driven by the hydraulic cylinder to squeeze sludge, so that water in the sludge is separated, the push plate is driven by the hydraulic cylinder II to push the sludge, and the hydraulic cylinder III is started to enable the valve to rise to drain the sludge into the sludge tank to collect the sludge, but the hydraulic engineering dredging device is complex in structure, multiple in driving equipment, high in use cost and low in efficiency, if the sludge is more, the phenomenon that the sludge is squeezed out of the two squeeze plates can be caused, and the phenomenon of overflow pollution of the sludge is caused.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides the dredging device for the hydraulic engineering construction, which is convenient for efficiently separating the water in the river sludge and treating the sludge.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a dredging device for hydraulic engineering construction, includes the rose box, install the filter in the rose box, lower extreme one side intercommunication of rose box has the drain pipe that is less than the filter, the mud mouth has been seted up to the one end of rose box, install into mud unit on the rose box, install drive unit in the rose box, drive has the clear mud unit of extrusion on the drive unit, drive unit drive clear mud unit of extrusion in reciprocating motion in the rose box, install the protection unit that blocks the silt on the drive unit, the dredging unit that clear up the filter is installed to the inside lower extreme of rose box.

Preferably, the mud squeezing unit comprises a connecting frame, the driving unit drives the connecting frame to move, a squeezing roller is rotationally connected between the inner walls of the lower ends of the connecting frame, one side of the connecting frame is fixedly connected with a plurality of supporting frames, a plurality of outer walls of the supporting frames are fixedly connected with a plurality of connecting sleeves, a plurality of rotating rods are rotationally connected with the connecting sleeves, the outer walls of the rotating rods are rotationally connected with movable pushing plates, and the squeezing roller is used for blocking and limiting one side of the movable pushing plates.

Preferably, the extruding mud-cleaning unit further comprises a tripod, the tripod is fixedly connected to the bottom surface of the supporting frame, and the tripod blocks and limits one side of the movable pushing plate.

Preferably, the link includes drive frame and two regulation poles, the spacing groove has all been seted up to the both ends bottom surface of drive frame, sliding connection has the slide bar in the spacing groove, the lower extreme of slide bar wears to establish to outside the spacing groove and with the up end fixed connection of regulation pole, squeeze roll rotates to be connected between two adjust the pole, the inside roof fixedly connected with adjusting spring of spacing groove, adjusting spring's the other end with the upper end fixed connection of slide bar, the carriage with the lateral wall fixed connection of drive frame.

Preferably, the driving unit comprises a motor, a screw rod and two limiting rods, the motor is installed on the outer wall of the filter box, an output shaft of the motor penetrates through the filter box and is fixedly connected with one end of the screw rod, the other end of the screw rod is rotatably connected with the inner wall of the filter box, the two limiting rods are fixedly connected in the filter box, the transmission frame is slidably connected with the two limiting rods, and the screw rod penetrates through the transmission frame and is in threaded connection with the transmission frame.

Preferably, the protection unit comprises a protection plate, the protection plate is slidably connected to the outer walls of the two limiting rods, the protection plate is located in the filter box and is away from one end of the mud outlet, two limiting springs are fixedly connected to one side of the protection plate, the limiting springs are sleeved outside the limiting rods, and the other ends of the limiting springs are fixedly connected with the inner walls of the end faces of the adjacent filter boxes.

Preferably, the mud feeding unit comprises a support and a mud feeding pipe, the outer wall of the mud feeding pipe is communicated with a mud conveying pipe, the mud discharging pipe is arranged on the bottom surface inside the support, the mud conveying pipe penetrates through the support and is communicated with the mud discharging pipe, and the two ends of the support are fixedly connected with the upper surface of the filter box.

Preferably, the number of the brackets, the mud conveying pipes and the mud outlet pipes is multiple, and the brackets are uniformly distributed in the middle of the upper surface of the filter box.

Preferably, the dredging unit comprises a water pump and a supporting rod, the water pump and the supporting rod are both positioned below the filter plate, two ends of the supporting rod are fixedly connected with the inner wall of the filter box, the water pump is placed on the bottom surface of the filter box, a frame-shaped water pipe is mounted on the upper surface of the supporting rod, a plurality of water diversion pipes are communicated with the middle part of the frame-shaped water pipe, nozzles are communicated with the outer wall of the water diversion pipes, the water spraying direction of the nozzles faces the bottom surface of the filter plate, and the output end of the water pump is communicated with the frame-shaped water pipe through a pipeline.

Preferably, the movable pushing plate can actively shield the mud outlet.

Compared with the prior art, the utility model has the following beneficial effects:

According to the utility model, the drive unit is used for driving the extrusion mud cleaning unit to move, the extrusion mud cleaning unit can extrude the mud conveyed into the filter box by the mud inlet unit in the moving process and push out the filter box from the mud outlet, so that the water in the mud is separated and filtered by the filter plate to fall into the filter box, the whole structure is simple, the water in the mud can be efficiently treated, and the river dredging efficiency in hydraulic engineering construction is improved.

According to the utility model, the connecting frame is driven to move by the screw rod driven by the motor, so that the squeeze roller moves in the direction away from the sludge outlet to squeeze and separate water from sludge, the movable push plate can rotate outwards at the moment and does not generate thrust to the sludge, and when the connecting frame moves in the opposite direction, the movable push plate can push the sludge with separated water to be discharged from the sludge outlet, so that the integral structure is simple, the water separation efficiency of the sludge is high, and the sludge is convenient to treat.

According to the utility model, the squeeze rollers are arranged and have a certain movable space through the connecting frame, so that the device can adapt to the fact that sludge with different thicknesses is conveyed to the filter plate to separate and discharge water, and the practicability is improved.

According to the utility model, the protection unit is arranged to block the sludge falling onto the filter plate, so that the movable push plate can be conveniently moved to a position on the filter plate where no sludge exists, and the movable plate can stably push the sludge on the filter plate out of the sludge outlet, so that the movable push plate is convenient to use.

According to the utility model, the dredging unit is arranged in the filter box, and can be used for flushing the filter plate by utilizing the water squeezed out of the sludge, so that the filter plate is prevented from being blocked by the sludge to influence the filtration of the water.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the connection structure of the driving unit and the connecting frame of the present utility model;

FIG. 3 is a schematic cross-sectional view of an extrusion mud cleaning unit and a transmission frame;

FIG. 4 is a schematic view of the structure of the mud feeding unit of the present utility model;

FIG. 5 is a schematic view of the dredging unit of the present utility model;

fig. 6 is a partial enlarged view at a in fig. 3.

In the figure: 1. a filter box; 2. a filter plate; 3. a mud outlet; 4. a drain pipe; 5. a mud feeding unit; 51. a bracket; 52. a mud inlet pipe; 53. a mud pipe; 54. a mud outlet pipe; 6. a driving unit; 61. a motor; 62. a limit rod; 63. a screw rod; 7. extruding a mud cleaning unit; 71. a connecting frame; 711. a transmission frame; 712. an adjusting rod; 713. a limit groove; 714. a slide bar; 715. an adjusting spring; 72. a squeeze roll; 73. a support frame; 74. connecting sleeves; 75. a rotating rod; 76. a movable push plate; 77. a tripod; 8. a protection unit; 81. a protection plate; 82. a limit spring; 9. a dredging unit; 91. a water pump; 92. a support rod; 93. a frame-shaped water pipe; 94. a water diversion pipe; 95. and (3) a nozzle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present utility model, based on the embodiments herein.

Referring to fig. 1-6, the dredging device for hydraulic engineering construction of this embodiment includes a filter box 1, a filter plate 2 is installed in the filter box 1, a drain pipe 4 lower than the filter plate 2 is communicated with one side of the lower end of the filter box 1, a mud outlet 3 is formed at one end of the filter box 1, a mud inlet unit 5 is installed on the filter box 1, a driving unit 6 is installed in the filter box 1, an extrusion mud cleaning unit 7 is driven on the driving unit 6, the driving unit 6 drives the extrusion mud cleaning unit 7 to reciprocate in the filter box 1, a protection unit 8 for blocking mud is installed on the driving unit 6, and a dredging unit 9 for cleaning the filter plate 2 is installed at the lower end inside the filter box 1.

As shown in fig. 1-5, the dredging device for hydraulic engineering construction has a structure similar to that of the existing dredging device for hydraulic engineering construction, such as a river dredging device for hydraulic engineering construction disclosed in patent publication No. CN218687232U, and the main improvement point of the utility model is that the water in river sludge is conveniently separated with high efficiency, so that the sludge is conveniently treated; according to the utility model, when the sludge in the river is required to be cleaned, the sludge in the river is conveyed to the filter plate 2 in the filter box 1 from the sludge inlet unit 5 through the ship, when the sludge is accumulated to a certain extent, the driving unit 6 is started to drive the extruding sludge cleaning unit 7 to extrude and drain the sludge, the water in the sludge falls to the inner bottom surface of the filter box 1 through the filtration of the filter plate 2, the sludge cleaning unit 7 is extruded and the sludge separated from the water outlet 3 is discharged, so that the sludge is treated during hydraulic engineering construction, when more water is discharged from the filter box 1, the drain pipe 4 can be opened, the separated water is discharged, the whole structure is simple, the water in the sludge can be efficiently treated, and the river dredging efficiency during the hydraulic engineering construction is improved.

As shown in fig. 2 and 3, the mud squeezing unit 7 comprises a connecting frame 71, the driving unit 6 drives the connecting frame 71 to move, a squeezing roller 72 is rotationally connected between inner walls of lower ends of the connecting frame 71, one side of the connecting frame 71 is fixedly connected with a plurality of supporting frames 73, outer walls of the plurality of supporting frames 73 are fixedly connected with a plurality of connecting sleeves 74, a rotating rod 75 is rotationally connected with the plurality of connecting sleeves 74, the outer walls of the rotating rod 75 are rotationally connected with a movable push plate 76, and the squeezing roller 72 blocks and limits one side of the movable push plate 76; when the mud falls on the filter plate 2, the clear mud unit 7 of extrusion is located the rose box 1 inner wall one end that is close to outlet 3 this moment, when mud accumulation on filter plate 2 reaches certain thickness, stop earlier and carry the mud to rose box 1 in through advance mud unit 5, drive unit 6 drives link 71 and remove at rose box 1, link 71 keeps away from outlet 3, link 71 drives squeeze roll 72 and extrudes the mud on the filter plate 2, make the moisture extrusion in the mud and permeate filter box 1 through filter plate 2, movable push plate 76 rotates to the direction of keeping away from squeeze roll 72 because of the drive of mud this moment, support frame 73 supports movable push plate 76 through adapter sleeve 74 and bull stick 75, movable push plate 76 rotates with bull stick 75, thereby make movable push plate 76 can not promote the mud removal, until squeeze roll 72 and movable push plate 76 move to the one end that outlet 3 was kept away from to filter box 1 because of the blocking of protection unit 8 this end of rose box 1 does not have the mud, the blocking of movable push plate 76 does not have the mud can change to perpendicular, drive unit 6 and drive link 71 reverse removal because of the drive of the block 72 in this moment, thereby make the efficiency to carry out the removal of the filter plate 2 is convenient for the overall, thereby make the efficiency is carried out to the removal of the filter plate is convenient to carry out to the overall and is convenient to remove the mud from the filter plate 3 after the filter plate is pushed to the movable has carried out, the water has high efficiency, and is pushed the filter plate 2, thereby has been pushed the efficiency, and has been convenient to be convenient to remove.

As shown in fig. 3, the squeezing mud cleaning unit 7 further comprises a tripod 77, the tripod 77 is fixedly connected to the bottom surface of the supporting frame 73, and the tripod 77 performs blocking restriction on one side of the movable push plate 76; when the movable push plate 76 pushes and cleans the sludge, the tripod 77 can support the movable push plate 76, so that the strength of the movable push plate 76 pushing the sludge is improved.

As shown in fig. 3 and 6, the connecting frame 71 comprises a transmission frame 711 and two adjusting rods 712, the bottom surfaces of the two ends of the transmission frame 711 are respectively provided with a limiting groove 713, a sliding rod 714 is connected in the limiting grooves 713 in a sliding way, the lower ends of the sliding rods 714 penetrate through the outside of the limiting grooves 713 and are fixedly connected with the upper end surfaces of the adjusting rods 712, the squeeze rollers 72 are rotatably connected between the two adjusting rods 712, the inner top wall of the limiting grooves 713 is fixedly connected with an adjusting spring 715, the other ends of the adjusting springs 715 are fixedly connected with the upper ends of the sliding rods 714, and the supporting frame 73 is fixedly connected with the side walls of the transmission frame 711; the driving unit 6 drives the transmission frame 711 to move, the transmission frame 711 drives the adjusting rod 712 to move through the sliding rod 714, the adjusting rod 712 drives the squeeze roller 72 to squeeze and discharge the sludge, when the thickness of the sludge is higher, the sludge squeezes the squeeze roller 72 to drive the sliding rod 714 and the limiting groove 713 on the transmission frame 711 to slide, thereby driving the adjusting spring 715 to compress through the sliding rod 714, the adjusting spring 715 always applies pressure to the sliding rod 714, the squeeze roller 72 always extrudes the sludge at high pressure, the water in the sludge is discharged, and the squeeze roller 72 can squeeze and discharge the sludge with different thicknesses, so that the practicability is improved.

As shown in fig. 1-3, the driving unit 6 comprises a motor 61, a screw rod 63 and two limiting rods 62, the motor 61 is mounted on the outer wall of the filter box 1, an output shaft of the motor 61 penetrates into the filter box 1 and is fixedly connected with one end of the screw rod 63, the other end of the screw rod 63 is rotatably connected with the inner wall of the filter box 1, the two limiting rods 62 are fixedly connected in the filter box 1, a transmission frame 711 is slidably connected with the outer walls of the two limiting rods 62, and the screw rod 63 penetrates through the transmission frame 711 and is in threaded connection with the transmission frame 711; when the silt discharged onto the filter plate 2 needs to be cleaned, the motor 61 is started to pay, the motor 61 drives the screw rod 63 to rotate, the screw rod 63 drives the transmission frame 711 to move in the filter box 1, the transmission frame 711 slides with the two limiting rods 62, the two limiting rods 62 limit the transmission frame 711, the squeeze roller 72 squeezes the silt, after the squeeze roller 72 moves to one end of the filter box 1, which is close to the motor 61, the screw rod 63 drives the transmission frame 711 to move reversely, and the movable push plate 76 pushes out the silt, which is separated from water, on the filter plate 2 from the mud outlet 3.

As shown in fig. 1 and 2, the protection unit 8 comprises a protection plate 81, the protection plate 81 is slidably connected to the outer walls of two limit rods 62, the protection plate 81 is positioned at one end, far away from the mud outlet 3, of the filter box 1, two limit springs 82 are fixedly connected to one side of the protection plate 81, the limit springs 82 are sleeved outside the limit rods 62, and the other ends of the limit springs 82 are fixedly connected with the inner walls of the end faces of the adjacent filter boxes 1; after silt falls onto the filter plate 2 through the mud feeding unit 5, the protection plate 81 can block the silt falling onto the filter plate 2 through the limit of the limit rod 62 and the thrust of the limit spring 82, so that the silt cannot flow to one end of the filter plate 2 close to the motor 61, after the extrusion roller 72 pushes the silt to extrude and then move to the protection plate 81, the protection plate 81 is driven to move, the limit spring 82 is compressed, so that the filter plate 2 at the position is not provided with the silt, the movable push plate 76 cannot be blocked by the silt, the movable push plate 76 can be in a vertical state, and the movable push plate 76 can be driven to discharge the silt on the filter plate 2 when moving back, so that the practicability is improved.

As shown in fig. 1 and 4, the mud feeding unit 5 comprises a bracket 51 and a mud feeding pipe 52, the outer wall of the mud feeding pipe 52 is communicated with a mud conveying pipe 53, a mud discharging pipe 54 is arranged on the bottom surface inside the bracket 51, the mud conveying pipe 53 penetrates through the bracket 51 and is communicated with the mud discharging pipe 54, and two ends of the bracket 51 are fixedly connected with the upper surface of the filter box 1; the mud is discharged from the mud inlet pipe 52 into the mud conveying pipe 53, and is conveyed from the mud conveying pipe 53 to the mud outlet pipe 54 to be discharged and fall onto the filter plate 2, and the support 51 supports the mud outlet pipe 54, so that the mud is conveyed conveniently, and dredging is facilitated.

As shown in fig. 4, the number of the brackets 51, the mud conveying pipes 53 and the mud discharging pipes 54 is plural, and the brackets 51 are uniformly distributed in the middle of the upper surface of the filter box 1; the sludge is dispersed by the sludge outlet pipes 54, so that the squeeze rollers 72 squeeze and drain the sludge, and the phenomenon that the water is discharged due to excessive thickness of the sludge accumulated on the filter plate 2 is avoided.

As shown in fig. 5, the dredging unit 9 comprises a water pump 91 and a supporting rod 92, the water pump 91 and the supporting rod 92 are both positioned below the filter plate 2, two ends of the supporting rod 92 are fixedly connected with the inner wall of the filter box 1, the water pump 91 is placed on the bottom surface of the filter box 1, a frame-shaped water pipe 93 is arranged on the upper surface of the supporting rod 92, a plurality of water diversion pipes 94 are communicated with the middle part of the frame-shaped water pipe 93, nozzles 95 are communicated with the outer walls of the frame-shaped water pipe 93 and the water diversion pipes 94, the water spraying direction of the nozzles 95 faces the bottom surface of the filter plate 2, and the output end of the water pump 91 is communicated with the frame-shaped water pipe 93 through a pipeline; the water after the silt extrusion falls to the inside bottom surface of rose box 1 through filter 2, and the water pump 91 extracts the water of rose box 1 bottom to in taking water to frame shape water pipe 93, frame shape water pipe 93 disperses water to the water diversion pipe 94 in, finally spouts through the nozzle 95 on frame shape water pipe 93 and the water diversion pipe 94, and spun water washes filter 2 from the bottom surface of filter 2, thereby avoids silt to block up the hole on the filter 2, influences the discharge of filter 2 to rivers.

As shown in fig. 2 and 3, the movable pushing plate 76 can shield the mud outlet 3; when the movable push plate 76 is not needed to be used, the movable push plate 76 moves to a position close to the mud outlet 3 of the filter box 1, and the movable push plate 76 shields the mud outlet 3, so that mud or water can be prevented from being discharged from the mud outlet 3, and the practicability is improved.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a dredging device for hydraulic engineering construction, includes rose box (1), its characterized in that, install filter (2) in rose box (1), lower extreme one side intercommunication of rose box (1) has drain pipe (4) that are less than filter (2), go out mud mouth (3) have been seted up to one end of rose box (1), install mud feeding unit (5) on rose box (1), install drive unit (6) in rose box (1), drive on drive unit (6) has extrusion clear mud unit (7), drive unit (6) drive extrusion clear mud unit (7) in reciprocating motion in rose box (1), install on drive unit (6) to block protection unit (8) of silt, dredge unit (9) to clear up filter (2) are installed to inside lower extreme of rose box (1).

2. The dredging device for hydraulic engineering construction according to claim 1, wherein the extrusion dredging unit (7) comprises a connecting frame (71), the driving unit (6) drives the connecting frame (71) to move, a squeeze roller (72) is rotationally connected between the inner walls of the lower ends of the connecting frame (71), one side of the connecting frame (71) is fixedly connected with a plurality of supporting frames (73), the outer walls of the supporting frames (73) are fixedly connected with a plurality of connecting sleeves (74), a plurality of rotating rods (75) are rotationally connected to the connecting sleeves (74), the outer walls of the rotating rods (75) are rotationally connected with movable pushing plates (76), and one side of the movable pushing plates (76) is blocked and limited by the squeeze roller (72).

3. The dredging device for hydraulic engineering construction according to claim 2, wherein the extruding dredging unit (7) further comprises a tripod (77), the tripod (77) is fixedly connected to the bottom surface of the supporting frame (73), and the tripod (77) blocks and limits one side of the movable pushing plate (76).

4. The dredging device for hydraulic engineering construction according to claim 3, wherein the connecting frame (71) comprises a transmission frame (711) and two adjusting rods (712), limiting grooves (713) are formed in the bottom surfaces of two ends of the transmission frame (711), sliding rods (714) are connected in the limiting grooves (713) in a sliding mode, the lower ends of the sliding rods (714) penetrate through the outside of the limiting grooves (713) and are fixedly connected with the upper end faces of the adjusting rods (712), the squeeze rollers (72) are rotatably connected between the two adjusting rods (712), adjusting springs (715) are fixedly connected to the inner top walls of the limiting grooves (713), the other ends of the adjusting springs (715) are fixedly connected with the upper ends of the sliding rods (714), and the supporting frames (73) are fixedly connected with the side walls of the transmission frame (711).

5. The dredging device for hydraulic engineering construction according to claim 4, wherein the driving unit (6) comprises a motor (61), a screw rod (63) and two limiting rods (62), the motor (61) is installed on the outer wall of the filter box (1), an output shaft of the motor (61) penetrates into the filter box (1) and is fixedly connected with one end of the screw rod (63), the other end of the screw rod (63) is rotatably connected with the inner wall of the filter box (1), the two limiting rods (62) are fixedly connected in the filter box (1), the transmission frame (711) is slidably connected with the outer walls of the two limiting rods (62), and the screw rod (63) penetrates through the transmission frame (711) and is in threaded connection with the transmission frame.

6. The dredging device for hydraulic engineering construction according to claim 5, wherein the protection unit (8) comprises protection plates (81), the protection plates (81) are slidably connected to the outer walls of the two limiting rods (62), the protection plates (81) are located in the filter box (1) and are away from one end of the mud outlet (3), two limiting springs (82) are fixedly connected to one side of the protection plates (81), the limiting springs (82) are sleeved outside the limiting rods (62), and the other ends of the limiting springs (82) are fixedly connected with the inner walls of the end faces of the adjacent filter boxes (1).

7. The dredging device for hydraulic engineering construction according to claim 6, wherein the mud inlet unit (5) comprises a bracket (51) and a mud inlet pipe (52), a mud conveying pipe (53) is communicated with the outer wall of the mud inlet pipe (52), a mud outlet pipe (54) is arranged on the inner bottom surface of the bracket (51), the mud conveying pipe (53) penetrates through the bracket (51) and is communicated with the mud outlet pipe (54), and two ends of the bracket (51) are fixedly connected with the upper surface of the filter box (1).

8. The dredging device for hydraulic engineering construction according to claim 7, wherein the number of the brackets (51), the mud conveying pipes (53) and the mud outlet pipes (54) is multiple, and the brackets (51) are uniformly distributed in the middle of the upper surface of the filter box (1).

9. The dredging device for hydraulic engineering construction according to claim 1, wherein the dredging unit (9) comprises a water pump (91) and a supporting rod (92), the water pump (91) and the supporting rod (92) are both located below the filter plate (2), two ends of the supporting rod (92) are fixedly connected with the inner wall of the filter box (1), the water pump (91) is placed on the bottom surface of the filter box (1), a frame-shaped water pipe (93) is mounted on the upper surface of the supporting rod (92), a plurality of water diversion pipes (94) are communicated with the middle part of the frame-shaped water pipe (93), nozzles (95) are communicated with the outer walls of the water diversion pipes (94), the water spraying direction of the nozzles (95) faces the bottom surface of the filter plate (2), and the output end of the water pump (91) is communicated with the frame-shaped water pipe (93) through a pipeline.

10. A dredging arrangement for hydraulic engineering construction according to claim 2, characterized in that the movable push plate (76) actively shields the mud outlet (3).