CN114908828B

CN114908828B - Desilting device of reservoir in hydraulic engineering

Info

Publication number: CN114908828B
Application number: CN202210134435.XA
Authority: CN
Inventors: 牛亚豪; 刘佳佳; 吴辉; 马武峰; 刘志伟; 张巧云; 梁志; 王颖; 王长存; 马艳红
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2024-04-05
Anticipated expiration: 2042-02-14
Also published as: CN114908828A

Abstract

The invention discloses a dredging device of a reservoir in hydraulic engineering, which comprises a sediment pump, at least one sand removing mechanism and at least one sludge dewatering mechanism, wherein the sand removing mechanism comprises a cylinder body and a filter screen, the top of the cylinder body is provided with a feed inlet communicated with the discharge end of the sediment pump, the bottom of the cylinder body is provided with a liquid outlet, the side wall of the cylinder body is also provided with a slag outlet, and the filter screen is arranged in the cylinder body and below the slag outlet; the sludge dewatering mechanism comprises at least one dewatering component and at least one extrusion component, wherein the dewatering component comprises at least one filter bag, the filter bag is communicated with a liquid outlet, the extrusion component comprises two extrusion parts and a first driving part, the two extrusion parts are respectively arranged on two sides of the filter bag, and the first driving part is connected with the two extrusion parts and is used for driving the two extrusion parts to be close to or far away from each other so as to extrude the filter bag. The invention can effectively remove the water in the sludge.

Description

Desilting device of reservoir in hydraulic engineering

Technical Field

The invention relates to the technical field of reservoir cleaning in hydraulic engineering, in particular to a reservoir dredging device in hydraulic engineering.

Background

The reservoir is a hydraulic engineering building for flood control and water storage and regulating water flow, and can be used for irrigation, power generation, flood control and fish culture, and sediment carried by water flow can be deposited in the reservoir in the use process of the reservoir, so that the reservoir flood control and water conservancy reservoir capacity are occupied, and the comprehensive economic benefit of the reservoir is affected.

The utility model discloses a desilting device of reservoir in hydraulic engineering, including the hull, the top one side of hull rotates and installs the rolling table, and the top of rolling table is provided with the slush pump, and the top fixed mounting of hull has first box, and one side fixed mounting of rolling table has the one end of support arm, and the top of first pipe is installed in the other end rotation of support arm, and slidable mounting has the top of second pipe on the inner wall of first pipe, and the bottom of second pipe is provided with the hank sucking disc, and the import fixedly connected with hose's of slush pump one end, and the other end and the first pipe of hose are linked together. Under the action of the slurry pump, the sludge is sucked into the slurry pump upwards through the twisted sucker, the second pipe, the first pipe and the hose, and is led into the sludge treatment box through the outlet of the slurry pump.

Because the sludge is pumped by the sludge pump and carries a large amount of moisture, the above patent does not disclose a device for treating the moisture contained in the sludge, the sludge containing a large amount of moisture is directly discharged to the shore, the moisture in the sludge is crossflow on the ground, so that the ground is wet and slippery, even the sludge is carried back to the reservoir, and a mechanism for separating the moisture in the sludge is not provided.

Disclosure of Invention

In view of the above, it is necessary to provide a dredging device for reservoirs in hydraulic engineering, which solves the technical problem that the prior art reservoir dredging device lacks a mechanism for separating water in sludge.

In order to achieve the technical purpose, the technical scheme of the invention provides a dredging device for a reservoir in hydraulic engineering, which comprises the following components:

a sediment pump;

the sand removing mechanism comprises a cylinder body and a filter screen, wherein a feed inlet communicated with the discharge end of the sediment pump is formed in the top of the cylinder body, a liquid outlet is formed in the bottom of the cylinder body, a slag outlet is formed in the side wall of the cylinder body, and the filter screen is arranged in the cylinder body and below the slag outlet;

the at least one sludge dewatering mechanism comprises at least one dewatering component and at least one extrusion component, wherein the dewatering component comprises at least one filter bag, the filter bag is communicated with the liquid outlet, the extrusion component comprises two extrusion parts and a first driving part, the two extrusion parts are respectively arranged on two sides of the filter bag, and the first driving part is connected with the two extrusion parts and is used for driving the two extrusion parts to be close to or far away from each other so as to extrude the filter bag.

In one embodiment, the filter screen comprises a frame body, a plurality of first filter strips and a plurality of second filter strips, wherein the frame body is connected to the inner wall of the cylinder body, the first filter strips and the second filter strips are mutually parallel and sequentially and alternately arranged, the first filter strips are connected to the frame body, the second filter strips are arranged at intervals and adjacent to the first filter strips, a filter gap is formed between the second filter strips and the first filter strips, one end of each second filter strip is rotatably connected to the frame body, and the sand removing mechanism further comprises a pushing assembly connected to the cylinder body and connected with the other end of each second filter strip for pushing the second filter strips to rotate along the rotation axis of one end of each second filter strip.

In one embodiment, the inner wall of the cylinder body is provided with a plurality of strip-shaped grooves, the strip-shaped grooves are parallel to each other and are arranged at intervals, the strip-shaped grooves are arranged along the axial direction of the cylinder body, the second filtering strips are arranged in one-to-one correspondence with the strip-shaped grooves, the other ends of the second filtering strips are inwards provided with sliding holes, the sliding holes are arranged along the length direction of the second filtering strips, the pushing assembly comprises a sliding block, a plurality of connecting rods and a first linear driving piece, the sliding block is connected with the outer wall of the cylinder body in a sliding manner along the axial direction of the cylinder body, the connecting rods are arranged in one-to-one correspondence with the second filtering strips, one ends of the connecting rods slidably penetrate through the strip-shaped grooves and are slidably inserted into the sliding holes, the other ends of the connecting rods are hinged with the sliding block, and the fixed ends of the first linear driving piece are connected with the outer wall of the cylinder body, and the output ends of the first linear driving piece are connected with the sliding block, and the sliding block is used for pushing the sliding block to move along the axial direction of the cylinder body.

In one embodiment, the strip-shaped groove is located below the frame body, the pushing assembly further comprises two fixing blocks and a sealing ring, the two fixing blocks are arranged on two sides of the strip-shaped groove and connected to the outer wall of the cylinder body, sliding grooves are formed in two opposite side walls of the fixing blocks, the sliding grooves are formed in the axial direction of the cylinder body along the sliding grooves, two sides of the sliding block are respectively and slidably inserted into the two sliding grooves, an annular groove is formed in one side of the sliding block, opposite to the cylinder body, the annular groove is arranged around the outer edge of the sliding block, and one side of the sealing ring is matched and embedded in the annular groove and the other side of the sealing ring is attached to the outer wall of the cylinder body.

In one embodiment, the dredging device of the reservoir in the hydraulic engineering further comprises at least one preliminary dewatering mechanism, the preliminary dewatering mechanism comprises a dewatering cylinder, a slip ring, a filter cloth, a second linear driving piece and a water pumping piece, a liquid inlet is formed in the side wall of the dewatering cylinder, a slag outlet is formed in the bottom of the dewatering cylinder, the liquid inlet is communicated with the liquid outlet, the slag outlet is communicated with the bag opening of the filter bag, the slip ring is slidably arranged in the dewatering cylinder and is in sealing connection with the dewatering cylinder, the filter cloth is arranged in the slip ring, the fixed end of the second linear driving piece is connected with the cylinder, the telescopic end of the second linear driving piece is connected with the slip ring and is used for pushing the slip ring to axially move along the cylinder, and the water pumping piece is connected with the dewatering cylinder and the liquid inlet of the water inlet is located above the filter cloth and is used for pumping water above the filter cloth out of the dewatering cylinder.

In one embodiment, the primary dewatering mechanism further comprises a grid, wherein the grid is arranged in the slip ring and abuts against the top of the filter cloth, and the slip ring is connected with the telescopic end of the second linear driving piece through the grid.

In one embodiment, the sludge dewatering mechanism further comprises a rotating bracket and a plurality of separation assemblies, the rotating bracket comprises a base, a rotating shaft, a fixing frame and a driver, the rotating shaft is rotatably connected to the base around the axis of the rotating shaft, the fixing frame is connected to the rotating shaft, the driver is connected to the base and the rotating shaft and is used for driving the rotating shaft to rotate around the axis of the rotating shaft, the plurality of the dewatering assemblies are arranged along the circumferential direction of the rotating shaft, the dewatering assemblies further comprise a slag inlet hopper and a slag outlet hopper, the slag inlet hopper and the slag outlet hopper are connected to the fixing frame, the filter bag is hollow in the interior and is provided with two open ends, one open end of the filter bag is communicated with the slag inlet hopper and is connected with the slag outlet hopper, the other open end of the filter bag is communicated with the slag outlet hopper and is connected with the slag outlet hopper, and the separation assemblies comprise two first clamping rollers, two second clamping rollers and at least two second driving parts, and the two first clamping rollers are arranged in parallel to each other and are arranged on two sides of the filter bag; the two second clamping rollers are arranged in parallel and are arranged on two sides of the filter bag, at least one second driving part is respectively connected with the two first clamping rollers and used for driving the two first clamping rollers to be away from or close to each other, and at least one second driving part is respectively connected with the two second clamping rollers and used for driving the two second clamping rollers to be away from or close to each other so as to clamp the filter bag; the pressing portion is disposed between the first pinch roller and the second pinch roller.

In one embodiment, the top of the base is provided with an annular water collecting tank, the water collecting tank is coaxially arranged with the rotating shaft, and the height of the top of the base is gradually reduced along the direction close to the water collecting tank.

In one embodiment, the preliminary dewatering mechanism further comprises a blanking member, the blanking member comprises at least two blanking pipes, one ends of the at least two blanking pipes are communicated with the slag outlet of the dewatering cylinder, a blanking station is formed below the blanking pipes, and the slag inlet hopper is arranged below the blanking pipes and the rotating track of the slag inlet hopper slides through each blanking station.

In one embodiment, the rotating bracket further comprises a sealing sleeve, the sealing sleeve is sleeved on the rotating shaft and connected to the base, and the inner wall of the sealing sleeve is in sealing connection with the outer wall of the rotating shaft.

Compared with the prior art, the invention has the beneficial effects that: the silt pump draws together the silt of reservoir bottom along with water, in the mud water mixture that draws forth gets into the barrel, in the barrel, the filter screen separates the relatively great sand of granule in the mud water mixture, and mud and water permeate filter screen and get into the filter bag through the barrel in, the water in the mud water mixture permeates the filter bag, and mud is intercepted in the filter bag, and extrude the filter bag through two extrusions, make the filter bag increase to the pressure that the water mixture was applyed, make the moisture in the filter bag permeate filter bag and mud separation, the application is through carrying out batch treatment to the mud water mixture, the classification collection to different resources has been realized, and the water after the filtration can be directly discharged into the reservoir, avoid the water in the mud water mixture that the mud pump took to carry silt again in the reservoir.

Drawings

FIG. 1 is a three-dimensional schematic view of a dredging device according to the invention;

FIG. 2 is a three-dimensional schematic view of a sand removal mechanism in the dredging device of the invention;

FIG. 3 is a three-dimensional schematic view of a sand removal mechanism in a dredging apparatus according to another view angle of the invention;

FIG. 4 is a three-dimensional schematic view of a filter screen, a discharge hopper, a pushing plate, a pushing hydraulic cylinder and a first guide rod in the dredging device;

FIG. 5 is a schematic diagram of the structure of the filter screen, the discharge hopper, the pushing plate, the pushing hydraulic cylinder and the first guide rod in the dredging device;

FIG. 6 is an enlarged partial schematic view at A in FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 8 is an enlarged partial schematic view at C in FIG. 7;

FIG. 9 is a three-dimensional schematic view of a preliminary dewatering mechanism in the dredging apparatus of the present invention;

FIG. 10 is a three-dimensional schematic view of a slip ring, filter cloth, a second linear driving member, a pumping member and a grating in the dredging device of the present invention;

FIG. 11 is a three-dimensional schematic view of a sludge dewatering mechanism in the dredging apparatus according to the invention;

FIG. 12 is a schematic view of a sludge dewatering mechanism in the dredging apparatus according to the invention;

FIG. 13 is a three-dimensional schematic view of a rotating rack, a dewatering assembly, a separating assembly and an extruding assembly of the dredging apparatus according to the invention;

FIG. 14 is a three-dimensional schematic view of a dewatering assembly, a separation assembly and a pressing assembly of the dredging apparatus according to the invention;

FIG. 15 is a three-dimensional schematic view of an extrusion assembly of the dredging apparatus according to the invention;

FIG. 16 is a schematic view of the cylinder, piston, output rod, return spring and main pipeline of the dredging device of the present invention;

FIG. 17 is a schematic view of the structure of the valve body, the pressure limiting tube, the adjusting screw, the sliding column and the pressure limiting spring in the dredging device.

Reference numerals:

a silt pump 1;

a sand removing mechanism 2; a cylinder 21; a screen 22; a frame 221; a first filter bar 222; a second filter strip 223; a pushing assembly 23; a slider 231; a connecting rod 232; a first linear driving member 233; a fixed block 234; a seal ring 235; a shutter 24; a hydraulic lever 25; a discharge hopper 26; a pusher plate 27; pushing the hydraulic cylinder 28; a first guide lever 29;

a sludge dewatering mechanism 3; a dewatering assembly 31; a filter bag 311; a slag hopper 312; a slag discharge hopper 313; a pressing assembly 32; a pressing portion 32a; a first driving section 32b; a column b1; a piston b2; an output lever b3; a return spring b4; a hydraulic pump b5; an oil tank b6; a main line b7; a fixing lever 32c; a connecting arm 32d; a pressure limiting member 32e; a valve body e1; a pressure limiting tube e2; an adjusting screw e3; a spool e4; a pressure limiting spring e5; a return pipe e6; a rotating bracket 33; a base 331; a rotating shaft 332; a fixing frame 333; a driver 334; a motor 3341; pulley 3342; a belt 3343; a partition assembly 34; a first nip roller 341; a second pinch roller 342; a second driving section 343; a connecting post 3431; a support rod 3432; first hydraulic cylinder 3433; sealing sleeve 335; a bearing 336;

A preliminary dewatering mechanism 4; a dewatering drum 41; slip rings 42; a filter cloth 43; a second linear drive 44; a water pumping member 45; a grille 46; a blanking member 47; a blanking pipe 471; a valve 472; a second guide bar 48; a transfer pump assembly 49; a first transfer pump 491; a second transfer pump 492.

Detailed Description

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.

As shown in fig. 1 to 17, the invention provides a dredging device for a reservoir in hydraulic engineering, which comprises a sediment pump 1, at least one sand removing mechanism 2 and at least one sludge dewatering mechanism 3, wherein the at least one sand removing mechanism 2 comprises a cylinder 21 and a filter screen 22, the top of the cylinder 21 is provided with a feed inlet communicated with the discharge end of the sediment pump 1, the bottom of the cylinder 21 is provided with a liquid outlet, the side wall of the cylinder 21 is also provided with a slag outlet, and the filter screen 22 is arranged in the cylinder 21 and below the slag outlet; the sludge dewatering mechanism 3 comprises at least one dewatering assembly 31 and at least one extrusion assembly 32, the dewatering assembly 31 comprises at least one filter bag 311, the filter bag 311 is communicated with a liquid outlet, the extrusion assembly 32 comprises two extrusion parts 32a and a first driving part 32b, the two extrusion parts 32a are respectively arranged on two sides of the filter bag 311, and the first driving part 32b is connected with the two extrusion parts 32a and used for driving the two extrusion parts 32a to be close to or far away from each other so as to extrude the filter bag 311.

The silt pump 1 draws out the silt of reservoir bottom together with water, the mud water mixture that draws out gets into barrel 21, in barrel 21, filter screen 22 separates the comparatively great sand of granule in the mud water mixture, and mud and water permeate filter screen 22 and get into filter bag 311 through barrel 21 in, the water in the mud water mixture permeates filter bag 311, and mud is intercepted in filter bag 311, and extrude filter bag 311 through two extrusion portions 32a, make the pressure that filter bag 311 applyed the water mixture increase, make the moisture in filter bag 311 permeate filter bag 311 separate with the mud, this application is through carrying out batch processing to the mud water mixture, the categorised collection to different resources has been realized, and the water after the filtration can directly be discharged into the reservoir, avoid the water in the mud water mixture that the mud pump took out to carry silt again in the reservoir.

It can be understood that the pipeline can be communicated with the liquid inlet end of the sediment pump 1, the pipeline is provided with the twisted sucker, the sludge is twisted and sucked through the twisted sucker, the sludge is sucked into the sediment pump 1 through the pipeline, the twisting and sucking of the sludge are realized, the liquid inlet end of the sediment pump 1 is also provided with the pipeline, and the pipeline is inserted into the sludge to suck the sludge.

The pressing portion 32a may have a plate shape or a spherical shape, and the pressing portion 32a may be a rugged block or the like.

In one embodiment, the filter screen 22 includes a frame 221, a plurality of first filter strips 222 and a plurality of second filter strips 223, the frame 221 is connected to the inner wall of the cylinder 21, the first filter strips 222 and the second filter strips 223 are parallel to each other and are alternately arranged in sequence, the first filter strips 222 are connected to the frame 221, the second filter strips 223 are spaced from the first filter strips 222, a filter gap is formed between the adjacent second filter strips 223 and the first filter strips 222, one end of each second filter strip 223 is rotatably connected to the frame 221, and the sand removing mechanism 2 further includes a pushing component 23, wherein the pushing component 23 is connected to the cylinder 21 and is connected to the other end of each second filter strip 223, so as to push the second filter strips 223 to rotate along the rotation axis of one end of each second filter strip 223.

When sand in the mud-water mixture is separated by the filter screen 22, the sand may clog the filter gap of the filter screen 22; this application is through setting up framework 221, first filter strip 222, second filter strip 223, after filter screen 22 uses a period, promote the articulated axis rotation of second filter strip 223 around its one end through pushing component 23, at this moment, filter gap between second filter strip 223 and the first filter strip 222 grow, originally the impurity of card in filter gap, drop in the filter gap under the rotation of second filter strip 223 this moment, the cleanness of filter gap of filter screen 22 has been realized, avoid filter gap to be stopped up and influence the filtration to mud water mixture, start pushing component 23 after cleaning filter gap, promote second filter strip 223 through pushing component 23 and reset.

In one embodiment, a plurality of strip-shaped grooves are formed in the inner wall of the cylinder 21, the strip-shaped grooves are parallel to each other and are arranged at intervals, the strip-shaped grooves are arranged along the axial direction of the cylinder 21, the second filter strips 223 are arranged in one-to-one correspondence with the strip-shaped grooves, sliding holes are formed in the other ends of the second filter strips 223 and are arranged inwards along the length direction of the second filter strips 223, the pushing assembly 23 comprises a sliding block 231, a plurality of connecting rods 232 and a first linear driving piece 233, the sliding block 231 is slidably connected to the outer wall of the cylinder 21 along the axial direction of the cylinder 21, one ends of the connecting rods 232 are slidably arranged through the strip-shaped grooves and are slidably inserted into the sliding holes, the other ends of the connecting rods 232 are hinged with the sliding blocks 231, and the fixed ends of the first linear driving pieces 233 are connected to the outer wall of the cylinder 21 and the output ends of the first linear driving piece 231 and are used for pushing the sliding blocks 231 to axially move along the cylinder 21.

When the second filter rod 223 is pushed to rotate, the second filter rod 223 can be pushed to rotate by a cylinder, a hydraulic cylinder and other components, and the pushing assembly 23 can be arranged inside the cylinder 21 or outside the cylinder 21.

This application is through seting up the bar groove and setting up slider 231, connecting rod 232 and first linear drive spare 233, when needs rotate second filter rod 223, start first linear drive spare 233, the output shaft of first linear drive spare 233 stretches out and promotes slider 231 and move to the direction of keeping away from framework 221 along the axial of barrel 21, slider 231 is the in-process of removal, contained angle between slider 231 and the connecting rod 232 changes, slider 231 orders about connecting rod 232 relative slider 231 to rotate, connecting rod 232 drives second filter rod 223 and rotates and slide relative second filter rod 223, through setting up pushing component 23, the rotation of promoting each second filter rod 223 has been realized.

In one embodiment, the bar-shaped groove is located below the frame 221, the pushing assembly 23 further comprises two fixing blocks 234 and a sealing ring 235, the two fixing blocks 234 are arranged on two sides of the bar-shaped groove and are connected to the outer wall of the cylinder 21, sliding grooves are formed in opposite side walls of the two fixing blocks 234, the sliding grooves are arranged along the axial direction of the cylinder 21, two sides of the sliding block 231 are respectively and slidably inserted into the two sliding grooves, an annular groove is formed in one side of the sliding block 231 opposite to the cylinder 21, the annular groove is arranged around the outer edge of the sliding block 231, and one side of the sealing ring 235 is matched with and embedded in the annular groove and the other side of the sealing ring is attached to the outer wall of the cylinder 21.

Through setting up the bar groove in the below of framework 221, because filter screen 22 can intercept sand on filter screen 22 for can pile up the sand on filter screen 22, the inner wall that piled up sand can be to barrel 21 exerts pressure, and through setting up the bar groove under framework 221 in this application, avoided the effort of piled up sand directly to act on the bar groove, through setting up fixed block 234, make slider 231 can sliding connection fixed block 234, can inject the slip direction of slider 231, through setting up sealing ring 235, can seal between the outer wall of slider 231 and barrel 21, avoid the muddy water of downwardly flowing outwards to flow out through the bar groove.

In one embodiment, a strip-shaped notch is formed at the bottom of the frame 221, and the notch is located at one side of the frame 221 near the strip-shaped groove. Through setting up the breach, second filter strip 223 pivoted in-process, when second filter strip 223 rotates to be parallel to each other with first filter strip 222, connecting rod 232 inserts in the breach, avoids framework 221 to hinder second filter strip 223 to rotate to be parallel to each other with first filter strip 222.

In one embodiment, the sand removing mechanism 2 further comprises a gate 24, a hydraulic rod 25 and a discharge hopper 26, wherein the gate 24 is arranged opposite to the slag discharging opening, one side of the gate is hinged with the cylinder 21, the base of the hydraulic rod 25 is hinged with the cylinder 21, the rod body of the hydraulic rod 25 is hinged with the other side of the gate 24 and is used for pushing the gate 24 to rotate around the axis of a rotating shaft on one side of the rod body, and the discharge hopper 26 is connected to the outer wall of the cylinder 21 and the feeding end of the discharge hopper is communicated with the slag discharging opening.

By arranging the gate 24 and the hydraulic rod 25, the slag discharging port can be controlled to be opened and closed, so that the slag discharging port is opened as required.

In one embodiment, the sand removing mechanism 2 further comprises a pushing plate 27 and a pushing hydraulic cylinder 28, wherein the pushing plate 27 is arranged in the cylinder 21 and opposite to the slag discharging opening, and the pushing hydraulic cylinder 28 is fixed to the cylinder 21, and an output shaft of the pushing hydraulic cylinder passes through the cylinder 21 and is connected to the pushing plate 27 for pushing the pushing plate 27 to move along the discharging direction of the slag discharging opening. By arranging the pushing plate 27 and the pushing hydraulic cylinder 28, when sand on the filter screen 22 needs to be discharged, the output shaft of the pushing hydraulic cylinder 28 pushes the pushing plate 27 to move, and the pushing plate 27 pushes the sand on the filter screen 22 out of the slag discharge port, so that the sand on the filter screen 22 is discharged.

In one embodiment, the sand removing mechanism 2 further comprises two first guide rods 29, the two first guide rods 29 are parallel to each other and are arranged at intervals, one end of each first guide rod 29 is connected with the pushing plate 27, and the other end of each first guide rod 29 can slide through the outer wall of the cylinder 21.

In one embodiment, the dredging device of the reservoir in the hydraulic engineering further comprises at least one preliminary dewatering mechanism 4, the preliminary dewatering mechanism 4 comprises a dewatering cylinder 41, a slip ring 42, a filter cloth 43, a second linear driving piece 44 and a water pumping piece 45, a liquid inlet is formed in the side wall of the dewatering cylinder 41, a slag outlet is formed in the bottom of the dewatering cylinder, the liquid inlet is communicated with a liquid outlet, the slag outlet is communicated with a bag opening of a filter bag 311, the slip ring 42 is slidably arranged in the dewatering cylinder 41 and is in sealing connection with the dewatering cylinder 41, the filter cloth 43 is arranged in the slip ring 42, a fixed end of the second linear driving piece 44 is connected to the cylinder 21, a telescopic end of the second linear driving piece 44 is connected to the slip ring 42 and is used for pushing the slip ring 42 to move along the axial direction of the cylinder 21, the water pumping piece 45 is connected to the dewatering cylinder 41, the liquid inlet is located above the filter cloth 43 and is used for pumping water above the filter cloth 43 out of the dewatering cylinder 41.

Because filter screen 22 only filters out the sand in the mud water mixture, contain a large amount of moisture in the mud that sees through filter screen 22, in order to be convenient for follow-up to the processing of mud, this application is through having set up preliminary dehydration mechanism 4, the muddy water that sees through filter screen 22 gets into the dehydration section of thick bamboo 41, second straight line driving piece 44 drives slip ring 42 and slides downwards, slip ring 42 drives filter cloth 43 and slides downwards, under filter cloth 43's effect, with the moisture and the mud separation in the mud water mixture, the moisture that separates is located filter cloth 43's top, because the density of mud is greater than water, from last gliding filter cloth 43 can promote mud to slide downwards, and water constantly sees through filter cloth 43, can concentrate the mud in the mud water mixture, be convenient for follow-up carries out concentration treatment to mud.

It can be understood that the number of the preliminary dewatering mechanisms 4 can be one, two, three, four, etc., and the number of the preliminary dewatering mechanisms 4 can be correspondingly set according to the pumping amount of the silt pump 1.

It will be appreciated that the pumping member 45 may be a variety of types of water pumps or other pumping devices.

In one embodiment, the second linear driving member 44 and the pumping member 45 are fixed to the top of the dewatering drum 41 by a bracket, and two second guide rods 48 parallel to the second linear driving member 44 are further provided at both sides of the second linear driving member 44.

In one embodiment, the primary dewatering mechanism 4 further comprises a grid 46, wherein the grid 46 is arranged inside the slip ring 42 and abuts against the top of the filter cloth 43, and the slip ring 42 is connected with the telescopic end of the second linear driving member 44 through the grid 46.

Through setting up grid 46, can support filter cloth 43 for the extrusion force of filter cloth 43 is evenly dispersed to grid 46, avoids filter cloth 43 local pressure-bearing too big to lead to breaking.

If the sludge discharged from the dewatering drum 41 or the drum 21 is directly caught by the filter bag 311, and then the mouth of the filter bag 311 is sealed and the filter bag 311 is pressed, it is necessary to butt the filter bag 311 against the liquid outlet of the drum 21 or the slag outlet of the dewatering drum 41, and when the filter bag 311 is filled with sludge, it is necessary to replace the filter bag 311 with a new one, it is necessary to butt the new filter bag 311 against the liquid outlet of the drum 21 or the slag outlet of the dewatering drum 41 again, and more filter bags 311 are required to be used and the butt joint is time-consuming.

In one embodiment, the middle part of the filter cloth 43 protrudes downwards to form a cylindrical protruding part, the grille 46 is attached to the protruding part of the filter cloth 43, the water pumping piece 45 is a water pump, and the water inlet pipe of the water pump extends into the cylindrical protruding part.

Through setting up the bulge, the extrusion force of applying to silt behind the bulge is bigger in the pressure of applying to silt in horizontal filter cloth 43 for moisture in the silt can be faster infiltration bulge, and the moisture in the silt of bulge week side can inwards permeate through the outer wall of bulge, makes there is water all the time in the bulge, has increased filtration area, and can avoid the feed liquor end of water pump to inhale the air.

In one embodiment, the sludge dewatering mechanism 3 further includes a rotating bracket 33 and a plurality of separating assemblies 34, the rotating bracket 33 includes a base 331, a rotating shaft 332, a fixing frame 333 and a driver 334, the rotating shaft 332 is rotatably connected to the base 331 around its own axis, the fixing frame 333 is connected to the rotating shaft 332, the driver 334 is connected to the base 331 and the rotating shaft 332, for driving the rotating shaft 332 to rotate around its own axis, the plurality of dewatering assemblies 31 are arranged along the circumference of the rotating shaft 332, the plurality of dewatering assemblies 31 further includes a slag inlet hopper 312 and a slag outlet hopper 313, the slag inlet hopper 312 and the slag outlet hopper 313 are connected to the fixing frame 333, the filter bag 311 is hollow in the interior and has two open ends, one open end of the filter bag 311 is connected to the slag inlet hopper 312, the other open end is connected to the slag outlet hopper 313, the separating assemblies 34 include two first clamping rollers 341, two second clamping rollers 342 and at least two second driving portions 343, the two first clamping rollers 341 are arranged in parallel to each other and are arranged on two sides of the filter bag 311; the two second clamping rollers 342 are arranged in parallel with each other and are arranged at two sides of the filter bag 311, at least one second driving part 343 is respectively connected with the two first clamping rollers 341, and at least one second driving part 343 is respectively connected with the two second clamping rollers 342 and is used for driving the two first clamping rollers 341 and the two second clamping rollers 342 to be far away from or close to each other so as to clamp the filter bag 311; the pressing portion 32a is provided between the first nip roller 341 and the second nip roller 342.

Through the arrangement, when the sludge is dehydrated through the filter bag 311, the driver 334 is started, the driver 334 drives the rotating shaft 332 to rotate, the rotating shaft 332 drives the fixed frame 333 and the dehydration component 31 to rotate, the fixed frame 333 rotates to drive the filter bag 311 to rotate, the filter bag 311 sequentially rotates to be communicated with the liquid outlet of the dehydration cylinder 41, when the filter bag 311 rotates to be communicated with the slag outlet, the second driving part 343 is started, the second driving part 343 drives the two first clamping rollers 341 to fold, the two first clamping rollers 341 clamp the bottom of the filter bag 311, the sludge in the dehydration cylinder 41 falls into the filter bag 311 through the liquid outlet, the bottom of the filter bag 311 is clamped by the two first clamping rollers 341, the sludge cannot directly slide down through the bottom of the filter bag 311, after the sludge in the filter bag 311 reaches a certain amount, the third driving part is started, the third driving part 342 drives the two second clamping rollers to fold, the top of the filter bag 311 is clamped by the two second clamping rollers 342, so that the sludge in the filter bag 311 can be prevented from overflowing from the top of the filter bag 311, then the rotating shaft 332 continues to rotate, the subsequent filter bag 311 rotates to the liquid outlet of the corresponding dewatering cylinder 41, the first driving part 32b is started, under the action of the first driving part 32b, the two squeezing parts 32a are driven to be mutually closed, the two squeezing parts 32a squeeze the filter bag 311, the sludge in the filter bag 311 penetrates the filter bag 311 and flows out of the filter bag 311 under the action of pressure, the sludge is intercepted in the filter bag 311, along with the gradual clamping of the two squeezing parts 32a, the water continuously flows out of the filter bag 311, the water in the sludge is continuously squeezed by the pressure maintaining of the two squeezing parts 32a, after the filter bag 311 rotates by a certain angle, the two squeezing parts 32a are driven to be opened by the first driving part 32b, the filter bag 311 is loosened, then the two first clamping rollers 341 are driven away from each other by the second driving part 343, so that the two first clamping rollers 341 loosen the filter bag 311, at this time, the sludge in the filter bag 311 loses the supporting force, slides into the slag discharging hopper 313 from the bottom opening of the filter bag 311 and is discharged from the bottom of the slag discharging hopper 313 under the action of self gravity, and then the two second clamping rollers 342 are driven away from each other by the third driving part, so that the two second clamping rollers 342 loosen the top of the filter bag 311, and the top of the filter bag 311 is in an open state, and by the arrangement, the filter bag 311 can be reused while the sludge is dehydrated by the filter bag 311, and the time for installing the filter bag 311 is omitted; one or more conveying belts for deslagging can be arranged on the base 331, and other conveying devices for deslagging, sludge and slag can be arranged on the base 331, which are not described in detail in the application.

It can be appreciated that the driver 334 may be a direct-drive motor, and directly drives the rotating shaft 332 to rotate through the direct-drive motor, and may drive the rotating shaft 332 to rotate through a motor combined with a gear, and may drive the rotating shaft 332 to rotate through a motor combined with a belt and a belt wheel.

In one embodiment, a central hole is formed in the middle of the base 331, the rotating shaft 332 is rotatably inserted into the central hole, the driver 334 is a motor 3341, an output shaft of the motor 3341 drives the rotating shaft to rotate through a belt pulley 3342 and a belt 3343, an outer wall of the rotating shaft 332 is sleeved on a bearing 336, the bearing 336 is matched with an inner wall of the central hole, and the rotating shaft 332 is driven to rotate through the motor 3341, the belt pulley 3342 and the belt 3343.

In one embodiment, the top of the base 331 is provided with an annular water collecting tank, the water collecting tank is coaxially arranged with the rotating shaft 332, and the height of the top of the base 331 is gradually reduced along the direction approaching to the water collecting tank.

It can be understood that the bottom of the water collecting tank is provided with a hole for leading out the water in the water collecting tank, and the water in the water collecting tank can be continuously discharged through a pump.

The water in the sludge flows out from the filter bags 311 in the process of extruding the filter bags 311 by the extruding part 32a, the flowing water is relatively scattered, and the water is discharged in the process of extruding and maintaining the pressure by the rotating shaft 332, so that the water extruded in each filter bag 311 can be collected by arranging the annular water collecting tank, and the random flowing of the water is avoided; through setting up the top of base 331 to be along being close to the direction height of water catch bowl and reduce gradually for when the moisture of extruding in the filter bag 311 falls on base 331, can flow out in the water catch bowl under the effect of gravity, realized the collection to the moisture of drip, avoid the water to flow at will.

After the sludge in the filter bag 311 is squeezed to remove water, the sludge can be transported away for agricultural composting or subjected to harmless treatment by closed incineration.

When the filter bag 311 is pressed by the pressing portion 32a after the filter bag 311 is filled with the sludge for the first time, moisture in the filter bag 311 is pressed out, and at this time, the volume of the filter bag 311 is compressed, and the sludge in the filter bag 311 cannot fully open the filter bag 311.

In one embodiment, the preliminary dewatering mechanism 4 further includes a blanking member 47, the blanking member 47 includes at least two blanking pipes 471, one ends of the at least two blanking pipes 471 are communicated with the slag hole of the dewatering drum 41, a blanking station is formed below the blanking pipe 471, a slag inlet hopper 312 is disposed below the blanking pipe 471, and a rotation track of the slag inlet hopper 312 slides through each blanking station.

Through setting up at least two unloading pipes 471, after the filter bag 311 is full of silt for the first time under unloading pipe 471, the filter bag 311 is rotated through pivot 332 when pressing, make the moisture in the filter bag 311 flow out through filter bag 311, after carrying out the pressurize to filter bag 311 through extrusion portion 32a, the moisture that can flow out in filter bag 311 is very limited, at this moment, filter bag 311 rotates to the below of unloading pipe 471, control the third drive portion, drive two second clamping roller 342 and keep away from each other through the third drive portion, under the effect of second clamping roller 342 that keeps away from each other, the top of filter bag 311 reopens, at this moment, open the unloading pipe 471 of this filter bag 311 top, make silt get into in the filter bag 311 from the unloading pipe 471, make silt in the filter bag 311 refill, then close this unloading pipe 471, start the third drive portion, drive two second clamping roller 342 and be close to each other through the top of second clamping filter bag 311, then drive two extrusion portions 32a again extrusion filter bag 311 through first drive portion 32b, make the silt in the filter bag 311 by the drainage of filter bag 311 by the effect of the rotation of second clamping roller 471 in order to avoid the filter bag 311 to make the spin-down in the filter bag 41 can be discharged under the spin-run in the filter bag's of the filter bag's that is empty the filter bag is empty in the filter bag's of the filter bag's can be under the filter's of the filter bag's of the spin-dryer's of spin-dryer's is avoided.

In one embodiment, the blanking member 47 further includes at least two valves 472, the valves 472 are disposed in one-to-one correspondence with the blanking pipe 471, and the valves 472 are mounted on the blanking pipe 471 for controlling the on-off of the blanking pipe 471.

It will be appreciated that the sludge may flow into the inlet of the dewatering cartridge 41 from the outlet of the cartridge 21 under the action of gravity or may be pumped into the inlet of the dewatering cartridge 41 by a pump.

In one embodiment, the preliminary dewatering mechanism 4 further comprises a delivery pump assembly 49, and the delivery pump assembly 49 comprises a first delivery pump 491, wherein the liquid inlet end of the first delivery pump 491 is communicated with the liquid outlet of the cylinder 21, and the liquid outlet end of the first delivery pump 491 is communicated with the liquid inlet of the dewatering cylinder 41. The sludge in the cylinder 21 is transferred into the dewatering cylinder 41 by the first transfer pump 491.

It will be appreciated that the sludge may flow into the filter bag 311 from the tap hole of the dewatering cartridge 41 under the influence of gravity or may be pumped into the filter bag 311 by a pump.

In one embodiment, the transfer pump assembly 49 further includes a second transfer pump 492, wherein a liquid inlet end of the second transfer pump 492 is in communication with the slag outlet of the dewatering drum 41, and a liquid outlet end is in communication with one end of each of the blanking pipes 471. By providing the second transfer pump 492, the sludge in the dewatering cartridge 41 is pumped into the discharge pipe 471 by the second transfer pump 492, and is incorporated into the filter bag 311 through the discharge pipe 471.

In one embodiment, the rotating bracket 33 further includes a sealing sleeve 335, the sealing sleeve 335 is sleeved on the rotating shaft 332 and connected to the base 331, and an inner wall of the sealing sleeve 335 is connected with an outer wall of the rotating shaft 332 in a sealing manner. Wherein, the inner wall of seal cartridge 335 is attached to the outer wall of rotating shaft 332, and the seal at the rotating connection position of rotating shaft 332 and base 331 is realized through seal cartridge 335.

Through setting up seal cover 335, when the moisture in the filter bag 311 is extruded the back whereabouts, can fall into the clearance department of pivot 332 and base 331, lead to moisture to flow from the clearance department of pivot 332 and base 331, this application can avoid moisture to flow through from the rotation junction of base 331 and pivot 332 through setting up seal cover 335.

It is to be understood that the first driving portion 32b may be a hydraulic cylinder, an air cylinder, or the like, the cylinder body is connected to the rotating bracket 33, the output shaft is connected to the pressing portion 32a, and the pressing portion 32a is driven to move by the movement of the output shaft relative to the rod body, so that the two pressing portions 32a are close to or far away from each other, the number of the first driving portions 32b in one pressing assembly 32 may be one, two, or the like, when the number of the first driving portions 32b in the pressing assembly 32 is one, one of the two pressing portions 32a is fixed to the rotating bracket 33, and the first driving portion 32b is connected to the other pressing portion 32a; when the number of the first driving portions 32b in the pressing assembly 32 is two, the first driving portions 32b are distributed in one-to-one correspondence with the pressing portions 32a, and the two first driving portions 32b drive the two pressing portions 32a to approach or separate from each other.

In one embodiment, the pressing assembly 32 further includes a fixing rod 32c and two connecting arms 32d, the fixing rod 32c is connected to the rotating bracket 33, the connecting arms 32d are arranged in a one-to-one correspondence with the pressing portions 32a, one end of each connecting arm 32d is connected to the pressing portion 32a, the other end of each connecting arm is hinged to the fixing rod 32c, the first driving portion 32b is connected to the two connecting arms 32d, and the first driving portion 32b can drive the two connecting arms 32d to close or open.

It is understood that the first driving portion 32b may be a hydraulic cylinder, a rod body of the hydraulic cylinder is hinged to one connecting arm 32d, an output shaft is hinged to the other connecting arm 32d, and the first driving portion 32b may be a cylinder, an electric push rod, or the like.

In one embodiment, the first driving portion 32b includes a cylinder b1, a piston b2, an output rod b3, a return spring b4, a hydraulic pump b5, an oil tank b6 and a main pipeline b7, the cylinder b1 is hollow and provided with an exhaust hole and an oil inlet hole, one end of the cylinder b1 is provided with a fixing hole along the axial direction, the other end of the cylinder b1 is hinged with a connecting arm 32d, the piston b2 is slidably arranged in the cylinder b1 and divides the internal cavity of the cylinder b1 into a first cavity and a second cavity, the first cavity is communicated with the oil inlet hole, the second cavity is communicated with the exhaust hole, one end of the output rod b3 is slidably inserted in the fixing hole and connected with the piston b2, the other end of the output rod b3 is hinged with the other connecting arm 32d, the return spring b4 is arranged in the second cavity, one end of the return spring b4 is connected with the piston b2, and the other end of the return spring b is connected with the inner wall of the cylinder b 1; the liquid inlet end of the hydraulic pump b5 is communicated with the oil tank b6, one end of the main pipeline b7 is communicated with the liquid outlet end of the hydraulic pump b5, the other end of the main pipeline b7 is communicated with the oil inlet hole, the extrusion assembly 32 further comprises a pressure limiting piece 32e, the pressure limiting piece 32e comprises a valve body e1, a pressure limiting pipe e2, an adjusting screw e3, a sliding column e4, a pressure limiting spring e5 and a return pipe e6, the valve body e1 is provided with a first through hole and a return hole, one end of the return hole is communicated with the first through hole and is mutually perpendicular to the first through hole, the inner wall of one end of the first through hole is provided with an internal thread, one end of the pressure limiting pipe e2 is communicated with the main pipeline b7, the other end of the return pipe is communicated with the other end of the first through hole, the adjusting screw e3 is in threaded connection with one end of the first through hole, the sliding column e4 is matched and can be slidably inserted into the first through hole, one end of the sliding column e4 is in sealed connection with the inner wall of the first through hole, one end of the pressure limiting spring e5 is connected with the sliding column e4, the other end of the return pipe e3 is abutted against the adjusting screw e3, one end of the return pipe e6 is communicated with the other end of the return hole and the oil tank b6 is communicated with the other end of the return pipe; when the pressing portion 32a is in an unpressed state, the spool e4 closes one end of the return hole.

When the two extrusion parts 32a are required to be mutually closed by the first driving part 32b, a hydraulic pump b5 is started, the hydraulic pump b5 pumps hydraulic oil in an oil tank b6 into a main pipeline b7, the hydraulic oil enters a cylinder b1 through a group pipeline, a piston b2 is pushed to slide in the cylinder b1 under the action of the hydraulic oil, the piston b2 drives an output rod b3 to move, so that the output rod b3 is retracted into the cylinder b1, the output rod b3 drives two connecting arms 32d to rotate, the two connecting arms 32d drive the two extrusion parts 32a to mutually close, and the two extrusion parts 32a extrude a filter bag 311; when the two squeezing parts 32a are required to be far away from each other, the hydraulic pump b5 is turned off, the piston b2 is reset under the action of the reset spring b4, the piston b2 drives the output rod b3 to extend out of the cylinder b1, and the output rod b3 drives the two connecting arms 32d to rotate until the two squeezing parts 32a are opened, and the two squeezing parts 32a are driven to be far away from each other.

Since the first driving part 32b may apply excessive extrusion force to the two extrusion parts 32a, so that the extrusion parts 32a damage the filter bag 311, the present application sets the pressure limiting piece 32e, when the pressure value between the two extrusion parts 32a reaches a certain value, the pressure liquid of the hydraulic oil in the main pipeline b7 is at a certain value, if the pressure of the hydraulic oil in the main pipeline b7 is continuously increased, the hydraulic oil pushes the sliding column e4 to extrude the pressure limiting spring e5 until the sliding column e4 slides through the backflow hole, when the sliding column e4 slides through the backflow hole, the hydraulic oil in the main pipeline b7 enters the valve body e1 through the pressure limiting pipe e2 and enters the backflow pipe e6 through the backflow hole of the valve body e1, and finally returns to the oil tank b6 through the backflow pipe e6, after the pressure limiting piece 32e is set, the extrusion force applied to the main pipeline b7 can be limited, and the extrusion force applied to the extrusion part 32a is prevented from being excessively large; through setting up adjusting screw e3, through rotating adjusting screw e3, adjusting screw e3 can promote pressure limiting spring e5 and remove for pressure limiting spring e5 is compressed or elasticity resets, can adjust pressure limiting value of pressure limiting piece 32e, makes pressure limiting piece 32 e's pressure limiting value adjustable as required.

The place that needs to seal in this application can seal through the cooperation, also can seal through the mode of installation sealing washer.

It can be appreciated that the second driving portion 343 may be a hydraulic cylinder, an air cylinder, an electric push rod, or the like, and the two first clamping rollers 341 are respectively connected through the output end and the fixed end of the second driving portion 343, so that the two first clamping rollers 341 are close to or far from each other.

In one embodiment, two ends of the first clamping roller 341 are respectively provided with a second through hole, two second through holes are parallel to each other, two ends of the second clamping roller 342 are respectively provided with a third through hole, and two third through holes are parallel to each other; the number of the second driving parts 343 is two, one of the second driving parts 343 corresponds to two first clamping rollers 341 and the other of the second driving parts 343 corresponds to two second clamping rollers 342, the second driving parts 343 comprise two connecting columns 3431, two supporting rods 3432 and first hydraulic cylinders 3433, in the second driving parts 343 opposite to the first clamping rollers 341, the connecting columns 3431 are arranged in one-to-one correspondence with the second through holes, one end of each connecting column 3431 is connected to the rotating bracket 33, the other end of each connecting column 3431 can pass through the two first clamping rollers 341 in a sliding manner through the second through holes, the supporting rods 3432 are arranged in one-to-one correspondence with the first clamping rollers 341, and one end of each supporting rod 3432 is connected to the first clamping rollers 341; in the second driving part 343 opposite to the second clamping rollers 342, the connecting columns 3431 are arranged in one-to-one correspondence with the third through holes, one end of each connecting column 3431 is connected to the rotating bracket 33, the other end of each connecting column 3431 slidably passes through the two second clamping rollers 342 through the third through holes, the supporting rods 3432 are arranged in one-to-one correspondence with the second clamping rollers 342, one end of each supporting rod 3432 is connected to the second clamping roller 342, in the two second driving parts 343, the cylinder bodies of the first hydraulic cylinders 3433 are connected to the other end of one supporting rod 3432, and the extending shafts are connected to the other end of the other supporting rod 3432.

When the two first clamping rollers 341 or the second clamping rollers 342 are required to be driven to be close to or far away from each other by the second driving part 343, the first hydraulic cylinder 3433 is started, and under the action of the first hydraulic cylinder 3433, the first hydraulic cylinder 3433 drives the two first clamping rollers 341 to be close to or far away from each other through the two supporting rods 3432, and drives the two second clamping rollers 342 to be close to or far away from each other, so that the two first clamping rollers 341 and the two second clamping rollers 342 clamp or unclamp the filter bag 311.

The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a desilting device of reservoir in hydraulic engineering which characterized in that includes:

a sediment pump;

The at least one sludge dewatering mechanism comprises at least one dewatering component and at least one extrusion component, the dewatering component comprises at least one filter bag, the filter bag is communicated with the liquid outlet, the extrusion component comprises two extrusion parts and a first driving part, the two extrusion parts are respectively arranged on two sides of the filter bag, and the first driving part is connected with the two extrusion parts and is used for driving the two extrusion parts to be close to or far away from each other so as to extrude the filter bag;

the filter screen comprises a frame body, a plurality of first filter strips and a plurality of second filter strips, wherein the frame body is connected to the inner wall of the cylinder body, the first filter strips and the second filter strips are mutually parallel and sequentially and alternately arranged, the first filter strips are connected to the frame body, the second filter strips and the first filter strips are arranged at intervals, a filter gap is formed between the adjacent second filter strips and the first filter strips, one end of each second filter strip is rotatably connected to the frame body, and the sand removing mechanism further comprises a pushing assembly which is connected to the cylinder body and connected with the other end of each second filter strip and used for pushing the second filter strips to rotate along the rotation axis of one end of each second filter strip;

The inner wall of barrel has been seted up a plurality of bar grooves, a plurality of bar grooves are parallel to each other and the interval sets up, the bar groove is followed the axial setting of barrel, the second filter strip with bar groove one-to-one sets up, the other end of second filter strip inwards has seted up the slide hole, the slide hole is followed the length direction setting of second filter strip, the promotion subassembly includes slider, a plurality of connecting rods and first linear drive spare, the slider is followed the axial sliding connection of barrel in the outer wall of barrel, the connecting rod with the setting of second filter strip one-to-one, the one end slidable of connecting rod passes bar groove and slidable insert in the slide hole, the other end of connecting rod with the slider is articulated, the stiff end of first linear drive spare be connected in the outer wall of barrel, output be connected in the slider, be used for promoting the slider is followed the axial displacement of barrel.

2. The dredging device for the reservoir in the hydraulic engineering according to claim 1, wherein the strip-shaped groove is located below the frame body, the pushing assembly further comprises two fixing blocks and a sealing ring, the two fixing blocks are arranged on two sides of the strip-shaped groove and are connected to the outer wall of the cylinder body, sliding grooves are formed in the opposite side walls of the two fixing blocks, the sliding grooves are formed in the axial direction of the cylinder body, the two sides of the sliding block are respectively and slidably inserted into the two sliding grooves, an annular groove is formed in one side of the sliding block, opposite to the cylinder body, the annular groove is arranged around the outer edge of the sliding block, and one side of the sealing ring is matched and embedded into the annular groove, and the other side of the sealing ring is attached to the outer wall of the cylinder body.

3. The dredging device for the reservoir in the hydraulic engineering according to claim 1, further comprising at least one preliminary dewatering mechanism, wherein the preliminary dewatering mechanism comprises a dewatering cylinder, a slip ring, a filter cloth, a second linear driving piece and a water pumping piece, a liquid inlet is formed in the side wall of the dewatering cylinder, a slag hole is formed in the bottom of the dewatering cylinder, the liquid inlet is communicated with the liquid outlet, the slag hole is communicated with the bag opening of the filter bag, the slip ring is slidably arranged in the dewatering cylinder and is in sealing connection with the dewatering cylinder, the filter cloth is arranged in the slip ring, the fixed end of the second linear driving piece is connected with the cylinder, the telescopic end of the slip ring is connected with the slip ring, the slip ring is pushed to move along the axial direction of the cylinder, and the water pumping piece is connected with the dewatering cylinder, the liquid inlet is positioned above the filter cloth, and is used for pumping water above the filter cloth out of the dewatering cylinder.

4. A dredging device for a reservoir in hydraulic engineering according to claim 3, wherein the preliminary dewatering mechanism further comprises a grid, the grid is arranged in the slip ring and abuts against the top of the filter cloth, and the slip ring is connected with the telescopic end of the second linear driving piece through the grid.

5. The dredging device for a reservoir in hydraulic engineering according to claim 4, wherein the sludge dewatering mechanism further comprises a rotating bracket and a plurality of separation components, the rotating bracket comprises a base, a rotating shaft, a fixing frame and a driver, the rotating shaft is rotatably connected to the base around the axis of the rotating shaft, the fixing frame is connected to the rotating shaft, the driver is connected to the base and the rotating shaft and is used for driving the rotating shaft to rotate around the axis of the rotating shaft, the dewatering components are multiple in number, the dewatering components are arranged along the circumferential direction of the rotating shaft, the dewatering components further comprise a slag inlet hopper and a slag outlet hopper, the slag inlet hopper and the slag outlet hopper are connected to the fixing frame, the inside of the filter bag is hollow, two ends of the filter bag are opened, one opening end of the filter bag is communicated with the slag inlet hopper, the other opening end of the filter bag is communicated with the slag outlet hopper, and the separation components comprise two first clamping rollers, two second clamping rollers and at least two second driving parts, and the two first clamping rollers are arranged in parallel to each other and are arranged on two sides of the filter bag; the two second clamping rollers are arranged in parallel and are arranged on two sides of the filter bag, at least one second driving part is respectively connected with the two first clamping rollers and used for driving the two first clamping rollers to be away from or close to each other, and at least one second driving part is respectively connected with the two second clamping rollers and used for driving the two second clamping rollers to be away from or close to each other so as to clamp the filter bag; the pressing portion is disposed between the first pinch roller and the second pinch roller.

6. The dredging device for a reservoir in hydraulic engineering according to claim 5, wherein the top of the base is provided with an annular water collecting tank, the water collecting tank is coaxially arranged with the rotating shaft, and the height of the top of the base is gradually reduced along the direction close to the water collecting tank.

7. The dredging device for a reservoir in hydraulic engineering according to claim 6, wherein the preliminary dewatering mechanism further comprises a blanking member, the blanking member comprises at least two blanking pipes, one ends of the at least two blanking pipes are communicated with a slag outlet of the dewatering cylinder, a blanking station is formed below the blanking pipes, the slag inlet hopper is arranged below the blanking pipes, and a rotating track of the slag inlet hopper slides through each blanking station.

8. The dredging device for a reservoir in hydraulic engineering according to claim 6, wherein the rotary support further comprises a sealing sleeve, the sealing sleeve is sleeved on the rotating shaft and connected to the base, and the inner wall of the sealing sleeve is in sealing connection with the outer wall of the rotating shaft.