CN113417328B

CN113417328B - River channel dredging equipment with silt dewatering mechanism

Info

Publication number: CN113417328B
Application number: CN202110839256.1A
Authority: CN
Inventors: 丁柏根
Original assignee: Shaoxing Baili Construction Co ltd
Current assignee: Shaoxing Baili Construction Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-04-29
Anticipated expiration: 2041-07-23
Also published as: CN113417328A

Abstract

The invention discloses a river channel dredging device with a sludge dewatering mechanism, which comprises a rack, wherein a mud pump is arranged on the rack, a water gun, a water tank, a sludge dewatering mechanism capable of continuously dewatering, a dry sludge tank and a dry sludge conveying mechanism are also arranged on the rack, the sludge dewatering mechanism comprises a support frame, a shell and a squeezing spiral plate, a sludge inlet and a sludge outlet are formed in two ends of a squeezing cavity, a squeezing plate is arranged on the side of the sludge outlet, a plurality of water outlet holes are formed in the bottom of the squeezing cavity, two filter cloth channels are axially arranged on two sides of the squeezing cavity within the range of the water outlet holes, filter cloth penetrates through the two filter cloth channels and is connected end to end, a mechanism for driving the filter cloth to rotate is axially arranged below the squeezing cavity, the sludge outlet of the mud pump is connected with the sludge inlet, sludge discharged from the sludge outlet falls into the dry sludge tank, and the dry sludge conveying mechanism is connected with the dry sludge tank. The river dredging equipment can remove water from silt and then convey the silt to a carrier on the bank side, and can use filter cloth for a longer time without influencing the circulation efficiency of the filter cloth.

Description

River channel dredging equipment with silt dewatering mechanism

Technical Field

The invention belongs to the technical field of river channel dredging equipment with a sludge dewatering mechanism, and particularly relates to river channel dredging equipment with the sludge dewatering mechanism, which is used for cleaning sludge in a river channel.

Background

The river channel and the like are frequently dug in the hydraulic engineering construction, sludge treatment in the river channel is an important work, the sludge can be effectively treated, the water quality can be better guaranteed, substances polluting the environment can be better reduced, a better living environment is provided, most harmful substances polluting the water quality are in the sludge, and therefore the sludge in the river channel needs to be regularly cleaned.

The prior art dredging equipment generally comprises grab bucket type dredging, pump suction type dredging and cutter suction type dredging.

The grab bucket type dredging is suitable for excavating medium and small river channels with large thickness of mud layers and a plurality of obstacles in construction areas, and is used for dredging engineering for enlarging flood-running sections of the river channels. The grab dredger is flexible and mobile, is not influenced by obstacles such as garbage, stones and the like in a river channel, is suitable for excavating harder earthwork or earthwork carrying more impurity garbage, and has the advantages of simple construction process, easy equipment organization, less engineering investment and no influence of weather in the construction process. However, the grab dredger has poor sensitivity to extremely soft bottom mud, and is easy to generate the condition of digging harder stratum earthwork at the lower part of the excavated riverbed in the excavation process, thereby leaking a large amount of surface layer bottom mud, particularly floating mud, and easily causing the surface layer floating mud to return to the water body again after being stirred. According to engineering experience, the sludge removal rate of the grab type dredging can only reach about 30%, and in addition, the grab type dredging is easy to generate floating sludge omission and strongly disturb bottom sludge, so that the original purpose can not be achieved in the dredging engineering which aims at improving water quality.

The equipment for pump suction type dredging is relatively simple, can be equipped with small and medium ships and equipment, and is suitable for entering small and medium river channel construction. In general, a large amount of river water is easy to be sucked out, so that the subsequent slurry treatment workload is increased. Meanwhile, the garbage in the river channel in China has complex components and different sizes, and the condition that the sludge suction port is blocked is easily caused.

The common cutter suction type dredging is suitable for dredging medium and large river channels with thick mud layers. The common cutter suction type dredging is a dredging, transporting and blowing integrated construction process, mud is transported by adopting a fully-closed pipeline, mud is not scattered or leaked, the navigation of a river channel is not influenced in the dredging process, the construction is not influenced by weather, and meanwhile, the construction control is carried out by adopting a GPS and an echo detector, so that the construction precision can be improved. The ordinary cutter suction type dredging is easy to cause the diffusion of pollutants in bottom mud due to the open excavation by adopting a spiral slicing reamer, and the phenomenon of serious back dredging can also occur. The clearance rate of the bottom mud is about 70 percent generally. In addition, the concentration of the blown sludge slurry is low, so that the volume of the slurry is increased, and the occupied area of a sludge storage yard is increased.

These dredging methods have an advantage in that they can be performed without pumping out river water, but have a problem in that the water content in the sludge is large, resulting in a significant increase in the cost of transporting the sludge.

To pump formula desilting equipment, in order to reduce the cost of transportation silt, it is comparatively ideal selection to filter the water in the silt and carry silt again, and general filtration equipment filters through the filter cloth generally, and the solid particle in the silt can be infiltrated on the in-process filter cloth surface of drainage, and long-time use can lead to the circulation efficiency reduction of filter cloth for the unable quick filtering of water in the silt influences the drainage effect.

Disclosure of Invention

The invention provides river channel dredging equipment with a sludge dewatering mechanism, aiming at the defects of the prior art, and the river channel dredging equipment with the sludge dewatering mechanism can enable one side of solid particles originally permeated into sludge to be reversely flushed by water extruded from the sludge during water filtration, so that the service life of filter cloth can be effectively prolonged, and the filter cloth can be used for a longer time without influencing the circulation efficiency.

In order to solve the technical problem, the invention is solved by the following technical scheme: a river channel dredging device with a sludge dewatering mechanism comprises a rack, wherein a mud pump is arranged on the rack, a water gun, a water tank, the sludge dewatering mechanism capable of continuously dewatering, a dry sludge tank and a dry sludge conveying mechanism are further arranged on the rack, a water pump connected with the water gun is arranged in the water tank, the sludge dewatering mechanism comprises a support frame, a shell with an extrusion cavity and a first rotating shaft driven by a motor, the first rotating shaft is arranged in the extrusion cavity in a penetrating manner, a material extruding spiral plate is arranged on the first rotating shaft, a sludge inlet and a sludge outlet are respectively arranged at two ends of the extrusion cavity, a material extruding plate is arranged on the first rotating shaft at the sludge outlet side in a sliding manner, a spring for pushing the material extruding plate to the sludge outlet is arranged between the material extruding plate and the support frame, a plurality of water outlet holes are arranged at the bottom of the extrusion cavity, it is a plurality of to lie in on the extrusion chamber the axial both sides in apopore scope are equipped with two filter cloth passageways, and the filter cloth passes two filter cloth passageway end to end, extrusion chamber below is axial to be worn to be equipped with by motor drive's second pivot, be equipped with a plurality of gyro wheels in the second pivot, it is a plurality of the gyro wheel with the filter cloth laminating, the silt exit linkage of slush pump advance the silt mouth, row silt mouth exhaust silt falls into do the silt case, do silt conveying mechanism and connect do the silt case. The river channel dredging equipment sprays sludge through a water gun, so that the sludge slides down and water is mixed in the sludge to enable a mud pump to better pump the sludge, the mud pump pumps the sludge to enter a sludge dewatering mechanism, the sludge dewatering mechanism dewaters the sludge and conveys the dry sludge into a dry sludge box, the dry sludge is conveyed to a carrier on the bank side by a dry sludge conveying mechanism, the sludge dewatering mechanism can drive a first rotating shaft to rotate through a motor, in the rotating process of the first rotating shaft, a squeezing spiral plate drives the sludge to move from a sludge inlet to a sludge outlet, the sludge can push a squeezing plate, in the pushing process, part of water in the sludge can be squeezed out and fall through a water outlet, in the dewatering process, a second rotating shaft can continuously or intermittently rotate, when the second rotating shaft rotates, a roller drives a filter cloth to rotate, and the filter cloth originally facing a squeezing cavity rotates to the lower part of the squeezing cavity, one side of the solid particles originally permeating into the sludge can be backwashed by water extruded from the sludge, so that the service life of the filter cloth can be effectively prolonged, and the filter cloth can be used for a longer time without influencing the circulation efficiency of the filter cloth.

In the above technical scheme, preferably, a plurality of limiting rods are arranged in the extrusion cavity, and the limiting rods abut against the filter cloth to be attached to one side of the water outlet hole. By adopting the structure, the filter cloth can be prevented from being rolled by the extrusion spiral plate, and the filter cloth is ensured to be attached to the side wall of the extrusion cavity.

In the above technical scheme, preferably, a plurality of guide strips protruding in an annular shape are arranged along the periphery of the filter cloth, and a notch matched with the guide strips is arranged on the filter cloth channel. The filter cloth can be prevented from moving laterally by the matching of the guide strips and the notches.

Among the above-mentioned technical scheme, it is preferred, the apopore below is provided with the chamber that catchments, it is provided with the outlet to catchment the chamber bottom, the outlet is connected through flow detection device the water tank, the squirt or be provided with electromagnetic flow control valve on the pipeline that squirt and water pump are connected, flow detection device with electromagnetic flow control valve connection control device. The water content of the dry sludge passing through the sludge dewatering mechanism can be detected by the flow detection device, the water content of the dry sludge is basically consistent, and the flow of the slurry pump in working is also kept stable, so that the water content of the sludge pumped by the slurry pump can be judged by the flow detected by the flow detection device, the water spray amount of the water gun is adjusted by controlling the electromagnetic flow adjusting valve by the control device, the water content of the sludge sucked is controlled, when the flow detected by the flow detection device is too low, the water spray amount of the water gun is increased by the electromagnetic flow adjusting valve, when the flow detected by the flow detection device is too high, the water spray amount of the water gun is reduced by the electromagnetic flow adjusting valve, the water content of the sludge sucked into the slurry pump is kept in a proper range, the slurry pump can be prevented from being blocked, the suction amount can be reduced, and the working efficiency is improved, and the water in the extruded sludge is recycled, so that the water consumption is reduced, and the transportation cost is reduced.

Among the above-mentioned technical scheme, it is preferred, be provided with in the frame by motor drive's first seat of rotating, be provided with on the first seat of rotating the squirt, first seat of rotating reciprocating rotation is so that squirt spun water column reciprocating motion. Adopt this structure can enlarge the spray regime of squirt, at first rotation seat reciprocating motion's in-process, the water column of squirt can spray the sectorial scope.

Among the above-mentioned technical scheme, it is preferred, dry silt conveying mechanism includes the circulating line, be provided with end to end's chain in the circulating line, the interval is provided with the scraping wings on the chain, be provided with on the circulating line and be used for the drive chain pivoted drive arrangement, the both sides that the circulating line is relative are provided with feed inlet and discharge gate respectively, have feed inlet one side the circulating line passes dry silt case, the feed inlet is located dry silt incasement. Adopt this structure can drive the chain through drive arrangement and rotate, carry the dry silt of doing the silt incasement to the discharge gate blanking through the scraping wings.

In the above technical solution, preferably, the frame is provided with a second rotating base driven by a motor, the second rotating base is provided with the dry sludge box, and the second rotating base rotates to change the position of the discharge port. Adopt this structure can change the position of discharge gate through the rotation of second rotation seat, be suitable for the carrier of bank to catch dry silt.

In the above technical solution, preferably, the circulation pipeline is rotatably connected to the dry sludge tank, a linear driving device for changing an angle of the circulation pipeline is disposed between the circulation pipeline and the second rotating base, and the linear driving device extends and retracts to change a horizontal distance between the discharge port and the dry sludge tank. By adopting the structure, the horizontal distance between the discharge port and the dry sludge box can be changed by the extension and retraction of the linear driving device, and the carrier suitable for the shore can catch the dry sludge.

In the above technical scheme, preferably, an arc-shaped groove is formed in the bottom of the support frame close to the sludge discharge port, and the opening edge of the dry sludge box is inserted into the arc-shaped groove. Because the second rotates the seat and need rotate the position that changes the discharge gate, and linear drive device need stretch out and draw back and change the discharge gate with do the horizontal distance of silt case, be suitable for the carrier on bank to catch and do silt, above-mentioned structure can make do silt conveying mechanism and do the silt case can not appear interfering with silt dewatering mechanism in the pivoted in-process.

In the above technical solution, preferably, the frame is disposed on the crawler type traveling mechanism. Locate the frame and can remove by the whole frame of crawler-type running gear control on the crawler-type running gear for whole desilting equipment can remove at the bottom of a river, can remove each position as required, makes things convenient for the desilting.

Compared with the prior art, the invention has the following beneficial effects: the river channel dredging equipment sprays sludge through a water gun, so that the sludge slides down and water is mixed in the sludge to enable a mud pump to better pump the sludge, the mud pump pumps the sludge to enter a sludge dewatering mechanism, the sludge dewatering mechanism dewaters the sludge and conveys the dry sludge into a dry sludge box, the dry sludge is conveyed to a carrier on the bank side by a dry sludge conveying mechanism, the sludge dewatering mechanism can drive a first rotating shaft to rotate through a motor, in the rotating process of the first rotating shaft, a squeezing spiral plate drives the sludge to move from a sludge inlet to a sludge outlet, the sludge can push a squeezing plate, in the pushing process, part of water in the sludge can be squeezed out and fall through a water outlet, in the dewatering process, a second rotating shaft can continuously or intermittently rotate, when the second rotating shaft rotates, a roller drives a filter cloth to rotate, and the filter cloth originally facing a squeezing cavity rotates to the lower part of the squeezing cavity, one side of the solid particles originally permeating into the sludge can be backwashed by water extruded from the sludge, so that the service life of the filter cloth can be effectively prolonged, and the filter cloth can be used for a longer time without influencing the circulation efficiency of the filter cloth.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of a partial sectional structure of a sludge dewatering mechanism according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of a sludge dewatering mechanism in an embodiment of the invention.

FIG. 4 is a schematic view of the connection structure of the dry sludge tank and the dry sludge conveying mechanism in the embodiment of the invention.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 4, a river dredging device with a sludge dewatering mechanism comprises a frame 1, a mud pump 2 is arranged on the frame 1, a water gun 3, a water tank 4 and a sludge dewatering mechanism 5 capable of continuously dewatering are also arranged on the frame 1, dry silt case 6 and dry silt conveying mechanism 7, be provided with the water pump (not drawn on the picture) of connecting squirt 3 in the water tank 4, set up into silt mouth 523 on the silt dewatering mechanism 5, outlet 524 and row silt mouth 525, silt exit linkage into silt mouth 523 of slush pump 2, outlet 524 connects water tank 4 through flow detection device 8, the silt of row's silt mouth 525 discharge falls into dry silt case 6, dry silt conveying mechanism 7 connects dry silt case 6, be provided with electromagnetic flow control valve 9 on the pipeline that squirt 3 or squirt 3 and water pump are connected, flow detection device 8 and electromagnetic flow control valve 9 connection controlling means (not drawn on the picture). This kind of river course desilting equipment with silt dewatering mechanism sprays silt through squirt 3 for silt landing makes slush pump 2 better pump silt with mixing into water in the silt, and slush pump 2 pumps silt and enters into silt dewatering mechanism 5, and silt dewatering mechanism 5 will silt dewatering and will dry silt carry dry in the silt case 6, will dry silt on the carrier of bank by silt conveyor 5 mechanism. The water content of the dry sludge passing through the sludge dewatering mechanism 5 can be detected by the flow detection device 8, the water content of the dry sludge is basically consistent, and the flow of the sludge pump 2 is kept stable in operation, so that the water content of the sludge sucked by the sludge pump 2 can be judged by the flow detected by the flow detection device 8, the water spray amount of the water gun 3 is adjusted by controlling the electromagnetic flow adjusting valve 9 by the control device, the water content of the sludge is controlled, when the flow detected by the flow detection device 8 is too low, the water spray amount of the water gun is increased by the electromagnetic flow adjusting valve 9, when the flow detected by the flow detection device 8 is too high, the water spray amount of the water gun is reduced by the electromagnetic flow adjusting valve 9, the water content of the sludge sucked into the sludge pump 2 is kept in a proper range, and the blockage of the sludge pump 2 can be prevented, and the pumping amount can be reduced, so that the operation efficiency is improved, the water in the extruded sludge is recycled, the water consumption is reduced, and the transportation cost is reduced.

In the present embodiment, the flow rate detection device 8 may be a flow rate sensor having any structure as long as it can transmit flow rate information to the control device.

In this embodiment, a first rotating seat 31 driven by a motor is disposed on the frame 1, the water gun 3 is disposed on the first rotating seat 31, and the first rotating seat 31 rotates reciprocally to enable a water column sprayed by the water gun 3 to move reciprocally. Adopt this structure can enlarge squirt 3's spray regime, at first rotation seat 31 reciprocating motion's in-process, squirt 3's water column can spray fan-shaped scope.

In this embodiment, the dry sludge conveying mechanism 7 includes a circulating pipe 71, an end-to-end chain 72 is disposed in the circulating pipe 71, a material pushing plate 73 is disposed at an interval on the chain 72, a driving device 74 for driving the chain 72 to rotate is disposed on the circulating pipe 71, the driving device 74 mainly includes a motor and a chain wheel driven by the motor, the chain wheel is matched with the chain 72, when the motor drives the chain wheel to rotate, the chain 72 is driven to rotate along one direction, a feeding hole 711 and a discharging hole 712 are disposed on two opposite sides of the circulating pipe 71, the circulating pipe 71 having one side of the feeding hole 711 penetrates through the dry sludge box 6, and the feeding hole 711 is located in the dry sludge box 6. With the structure, the chain 72 can be driven to rotate by the driving device 74, and the dry sludge in the dry sludge box 6 is conveyed to the discharge port 712 to be discharged through the material pushing plate 73.

In this embodiment, the frame 1 is provided with a second rotary base 61 driven by a motor, the second rotary base 61 is provided with a dry sludge tank 6, and the second rotary base 61 rotates to change the position of the discharge port 712. With this structure, the position of the discharge port 712 can be changed by the rotation of the second rotary base 61, and the carrier suitable for the shore catches the dry sludge.

In this embodiment, the circulation pipe 71 is rotatably connected to the dry sludge tank 6, a linear driving device 75 for changing the angle of the circulation pipe 71 is disposed between the circulation pipe 71 and the second rotating base 61, and the linear driving device 75 extends and retracts to change the horizontal distance between the discharge port 712 and the dry sludge tank 6. By adopting the structure, the horizontal distance between the discharge port 712 and the dry sludge tank 6 can be changed by the extension and contraction of the linear driving device 75, the carrier suitable for the shore can catch the dry sludge, and the linear driving device 75 can adopt an electric push rod, a hydraulic cylinder or an air cylinder.

In this embodiment, the frame 1 is provided on the crawler type traveling mechanism 10. Locate frame 1 and can be removed by whole frame 1 of crawler-type running gear 10 control on crawler-type running gear 10 for whole desilting equipment can remove at the bottom of a river, can remove each position as required, makes things convenient for the desilting.

In this embodiment, the sludge dewatering mechanism 5 includes a support frame 51, the sludge dewatering device comprises a shell 52 and a first rotating shaft 53, wherein the shell is provided with an extrusion cavity 521 and a water collecting cavity 522, the first rotating shaft 53 is driven by a motor, the first rotating shaft 53 penetrates through the extrusion cavity 521, an extrusion spiral plate 54 is arranged on the first rotating shaft 53, a sludge inlet 523 and a sludge outlet 525 are respectively arranged at two ends of the extrusion cavity 521, an extrusion plate 55 is arranged on the first rotating shaft 53 at the sludge outlet 525 in a sliding mode, a spring 56 for pushing the extrusion plate 55 to the sludge outlet 525 is arranged between the extrusion plate 55 and a support frame 51, a plurality of water outlet holes 526 are arranged at the bottom of the extrusion cavity 521, the water collecting cavity 522 is arranged below the water outlet 526, a water outlet 524 is arranged at the bottom of the water collecting cavity 522, the water outlet 524 is connected with a water tank 4 through a pipeline, a flow detection device 8 is arranged on the pipeline, the bottom of the water collecting cavity 522 inclines towards one side, and the water outlet 524 is arranged at the lowest position of the water collecting cavity 522. The sludge dewatering mechanism 5 can drive the first rotating shaft 53 to rotate by the motor, and during the rotation of the first rotating shaft 53, the extrusion spiral plate 54 drives the sludge to move from the sludge inlet 523 to the sludge discharge 525, the sludge will push the extrusion plate 55, in the pushing process, part of the water in the sludge is extruded and falls into the water collecting cavity 522 through the water outlet hole 526, the water in the water collecting cavity 522 naturally falls due to gravity and flows through the flow detection device 8 to detect the flow, the more the extruded water is, the larger the flow detected by the flow detection device 8 is, the less the extruded water is, the smaller the flow detected by the flow detection device 8 is, the extruded dry sludge falls from the gap between the sludge discharge port 525 and the material extruding plate 55, the sludge dewatering mechanism 5 can continuously extrude water, so that the flow detection device 8 can continuously measure the extruded water quantity in the sludge in real time, and no intermittence occurs.

In this embodiment, in order to improve the filtering effect and prevent or reduce solid particles in sludge from entering the water collecting cavity 522, the connection between the extrusion cavity 521 and the water collecting cavity 522 is provided with the filter cloth 57, in order to prevent the filter cloth 57 from being involved by the extrusion spiral plate 54, the extrusion cavity 521 is internally provided with a plurality of limiting rods 58, and the limiting rods 58 abut against the filter cloth 57 and are attached to one side of the water outlet hole 526.

Since solid particles in the sludge gradually permeate into one side of the filter cloth 57 close to the squeezing cavity 521 during the filtering process, the circulation efficiency of the filter cloth 57 is reduced due to long-term use, so that water squeezed out of the sludge cannot quickly fall into the water collecting cavity 522, which not only affects the recovery of water in the sludge, but also affects the detection of the flow detection device 8. In order to solve the technical problem, two filter cloth channels 527 are axially arranged on two sides of the extrusion cavity 521 within the range of the water outlet holes 526, the filter cloth 57 penetrates through the two filter cloth channels 527 to be connected end to end, a plurality of annular raised guide strips 571 are arranged along the periphery of the filter cloth 57, notches matched with the guide strips 571 are arranged on the filter cloth channels 527, and the filter cloth 57 can be prevented from moving laterally through the matching of the guide strips 571 and the notches. The guide strips 571 are made of elastic materials, the range of the water outlet hole 526 at the bottom of the squeezing cavity 521 is covered by the filter cloth 57, a second rotating shaft 528 driven by a motor axially penetrates through the water collecting cavity 522, a plurality of rollers 529 are arranged on the second rotating shaft 528, the rollers 529 are attached to the guide strips 531 or the filter cloth 57, when the motor drives the second rotating shaft 528 to rotate, the filter cloth 57 can be driven by the rollers 529 to rotate, so that the filter cloth 57 which originally faces the squeezing cavity 521 and is accordingly rotated to the lower side of the squeezing cavity 521, one side of solid particles originally permeating into sludge can be washed reversely by water squeezed out of the sludge, the service life of the filter cloth 57 can be effectively prolonged, the filter cloth 57 can be used for a longer time, and the circulation efficiency of the filter cloth 57 can not be affected.

The 5 both ends of silt dewatering mechanism all are provided with support frame 51, the support frame 51 bottom that is close to row silt mouth 525 is provided with arc wall 511, dry in the opening edge of silt case 6 inserts arc wall 511, in this embodiment, the bottom of this support frame 51 is equipped with a detachable curb plate, the curb plate forms this arc wall 511 when installing on support frame 51, the both sides of the opening position of doing silt case 6 still are equipped with the bellying, arc wall 511 both sides are equipped with the recess that matches with this bellying, when the support frame 51 bottom is amalgamated to the curb plate, the bellying stretches into in the recess and carries on spacingly to support frame 51 upper and lower position. Since the second rotary base 61 needs to be rotated to change the position of the discharge port 712 and the linear driving device 75 needs to be extended and contracted to change the horizontal distance between the discharge port 712 and the dry sludge tank 6, the carrier suitable for the shore can catch the dry sludge, and the above structure can prevent the dry sludge conveying mechanism 7 and the dry sludge tank 6 from interfering with the sludge dewatering mechanism 5 during the rotation.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a river course desilting equipment with silt dewatering mechanism, includes frame (1), be provided with slush pump (2) in frame (1), its characterized in that: still be provided with squirt (3), water tank (4), silt dewatering mechanism (5) that can remove water in succession, dry silt case (6) and dry silt conveying mechanism (7) on frame (1), be provided with the connection in water tank (4) the water pump of squirt (3), silt dewatering mechanism (5) are including support frame (51), have casing (52) of extrusion chamber (521) and by motor drive's first pivot (53), wear to be equipped with in extrusion chamber (521) first pivot (53), be provided with crowded material spiral plate (54) on first pivot (53), extrusion chamber (521) both ends are provided with respectively into silt mouth (523) and row silt mouth (525), arrange silt mouth (525) side first pivot (53) go up the slip and be provided with crowded flitch (55), crowded flitch (55) with be provided with between support frame (51) with push crowded flitch (55) are pushed to arrange the spring (56) of silt mouth (525) ) The sludge pump is characterized in that a plurality of water outlet holes (526) are formed in the bottom of the extrusion cavity (521), two filter cloth channels (527) are axially arranged on the two sides of the extrusion cavity (521) in a range of the water outlet holes (526) in an end-to-end mode, filter cloth (57) penetrates through the two filter cloth channels (527) in an end-to-end mode, a second rotating shaft (528) driven by a motor is axially arranged below the extrusion cavity (521) in a penetrating mode, a plurality of rollers (529) are arranged on the second rotating shaft (528), the rollers (529) are attached to the filter cloth (57), a sludge outlet of the sludge pump (2) is connected with the sludge inlet (523), sludge discharged from the sludge outlet (525) falls into the dry sludge tank (6), the dry sludge conveying mechanism (7) is connected with the dry sludge tank (6), a water collecting cavity (522) is formed below the water outlet holes (526), and a water outlet (524) is formed in the bottom of the water collecting cavity (522), outlet (524) is connected through flow detection device (8) water tank (4), squirt (3) or be provided with electromagnetic flow control valve (9) on the pipeline that squirt (3) and water pump are connected, flow detection device (8) with electromagnetic flow control valve (9) connection control device.

2. The river dredging apparatus having a sludge dewatering mechanism according to claim 1, wherein: a plurality of limiting rods (58) are arranged in the extrusion cavity (521), and the limiting rods (58) abut against the filter cloth (57) to be attached to one side of the water outlet hole (526).

3. The river dredging apparatus having a sludge dewatering mechanism according to claim 1, wherein: a plurality of guide strips (571) protruding in an annular shape are arranged along the periphery of the filter cloth (57), and a notch matched with the guide strips (571) is arranged on the filter cloth channel (527).

4. The river dredging apparatus having a sludge dewatering mechanism according to claim 1, wherein: be provided with on frame (1) by motor drive's first seat of rotating (31), be provided with on first seat of rotating (31) squirt (3), first seat of rotating (31) reciprocating rotation is so that squirt (3) spun water column reciprocating motion.

5. The river dredging apparatus having a sludge dewatering mechanism according to claim 1, wherein: do silt conveying mechanism (7) including circulating line (71), be provided with end to end's chain (72) in circulating line (71), the interval is provided with scraping wings (73) on chain (72), be provided with on circulating line (71) and be used for the drive chain (72) pivoted drive arrangement (74), the both sides that circulating line (71) is relative are provided with feed inlet (711) and discharge gate (712) respectively, have feed inlet (711) one side circulating line (71) pass do silt case (6), feed inlet (711) are located do in silt case (6).

6. The river dredging apparatus having a sludge dewatering mechanism according to claim 5, wherein: the machine frame (1) is provided with a second rotating seat (61) driven by a motor, the second rotating seat (61) is provided with the dry sludge box (6), and the second rotating seat (61) rotates to change the position of the discharge hole (712).

7. The river dredging apparatus having a sludge dewatering mechanism according to claim 6, wherein: the circulating pipeline (71) is rotationally connected with the dry sludge box (6), a linear driving device (75) used for changing the angle of the circulating pipeline (71) is arranged between the circulating pipeline (71) and the second rotating seat (61), and the linear driving device (75) stretches and retracts to change the horizontal distance between the discharge hole (712) and the dry sludge box (6).

8. A river dredging apparatus having a sludge dewatering mechanism according to claim 6 or 7, wherein: an arc-shaped groove (511) is formed in the bottom of the support frame (51) close to the sludge discharge port (525), and the opening edge of the dry sludge box (6) is inserted into the arc-shaped groove (511).

9. The river dredging apparatus having a sludge dewatering mechanism according to claim 1, wherein: the frame (1) is arranged on the crawler-type travelling mechanism (10).