A dredging and silt removal device and method based on cross-sectional flow

Abstract

An embodiment of the present application provides a dredging and silt removal device and method based on cross-sectional flow rate, which relates to the technical field of river silt cleaning equipment. The dredging and silt removal device based on cross-sectional flow rate includes: a hull, a lifting mechanism, a silt cleaning mechanism, a mud block dispersion mechanism, and a water filtering mechanism. A base is arranged on the deck of the hull; the lifting mechanism is installed above the base; the silt cleaning mechanism includes a sludge pump, a vertical pipe, and a sewage discharge hose. The sludge pump is hoisted at the hoisting end of the lifting mechanism, the bottom end of the vertical pipe is communicated with the output port of the sludge pump, and the bottom end of the sewage discharge hose is communicated with the top end of the vertical pipe. According to the present application, the rotating stirring part can pre-crush the mud blocks at the bottom of the silt into small pieces, and then the sludge blocks extracted after the sludge pump moves downward have become in a crushed state. The sludge pump can operate normally for a long time to extract the silt in the river cross-section, that is, the sludge pump is not prone to blockage during the process of extracting the silt in the river cross-section.

Description

Technical Field

[0001] The present application relates to the technical field of river silt cleaning equipment, and more specifically, to a dredging and silt cleaning device and method based on cross-sectional flow rate. Background Art

[0002] Rivers have functions such as flood discharge, waterlogging drainage, water diversion, irrigation, shipping, landscape, and tourism. A river cross-section is a cross-section of the river perpendicular to the water flow direction. The trapezoidal cross-section of the river occupies less land area compared to the compound cross-section and can be used for rivers in towns. Regular trapezoidal or rectangular cross-sections can help improve the flow capacity of the river and are beneficial for sewage discharge.

[0003] To restore the normal functions of the river, the river cross-section is usually dredged by using a sludge pump to pump the silt deposited at the river bottom to the river bank for cleaning, ensuring the normal functioning of various functions of the river such as flood control, waterlogging drainage, irrigation, water supply, and navigation. When the existing sludge pump is directly hoisted to the silt in the river cross-section by a hoisting device to clean the accumulated silt, as the silt is cleaned deeper, there are some silt blocks that are likely to block the sludge pump, affecting the normal progress of silt cleaning. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present application provides a dredging and silt cleaning device and method based on cross-sectional flow rate to solve the problem that when the silt is cleaned deeper, there are some silt blocks that are likely to block the sludge pump, affecting the normal progress of silt cleaning.

[0005] A dredging and silt cleaning device based on cross-sectional flow rate according to an embodiment of the present application includes: a hull, a hoisting mechanism, a silt cleaning mechanism, a silt block dispersion mechanism, and a water filtering mechanism.

[0006] A base is provided on the deck of the hull;

[0007] The hoisting mechanism is installed above the base;

[0008] The silt cleaning mechanism includes a sludge pump, a vertical pipe, and a sewage discharge hose. The sludge pump is hoisted at the hoisting end of the hoisting mechanism. The bottom end of the vertical pipe is connected to the output port of the sludge pump, and the bottom end of the sewage discharge hose is connected to the top end of the vertical pipe.

[0009] The hoisting mechanism can hoist the silt cleaning mechanism down to the silt in the river cross-section. The sludge pump operates to pump out the silt at the river cross-section, and the silt is discharged through the vertical pipe and the sewage discharge hose, and then the discharged sludge can be transported and transferred by a carrier vehicle on the river bank.

[0010] The mud block dispersion mechanism includes a support cross - plate, vertical plates, side seats, supports, a motor, limit blocks, guide rails, and a stirring part. The support cross - plate is fixedly sleeved outside the sludge pump. Two groups of vertical plates are respectively located on both sides of the support cross - plate. Chutes are opened at both ends of the support cross - plate. Two groups of guide rails respectively slide through the chutes, and the two groups of guide rails are respectively fixedly arranged on the opposite sides of the two vertical plates. Two side seats are respectively arranged on the back sides of the two vertical plates. The motor is installed on the side of the side seat away from the vertical plate. The support is arranged below the motor, and the output shaft end of the motor rotates through the support. The stirring part is located below the support and is connected to the output shaft end of the motor. Two limit blocks are respectively fixedly arranged at the top and bottom of the vertical plate.

[0011] While the sludge pump pumps the silt at the river cross - section, the motor also starts to operate. The motor drives the stirring part at the bottom to rotate. The rotating stirring part can pre - crush the mud blocks at the bottom of the silt into small pieces. Then, when the sludge pump moves downward, the sludge blocks to be pumped have become in a crushed state. The sludge pump can operate normally for a long time to pump the silt at the river cross - section, that is, the sludge pump is not prone to blockage during the process of pumping the silt at the river cross - section.

[0012] When both the sludge pump and the motor are operating to pump and crush the sludge, the stirring part at the bottom of the motor will be 27 cm - 32 cm lower than the bottom of the sludge pump. That is, when the sludge pump pumps the silt, the stirring part can always pre - stir and disperse the mud blocks at the bottom first, and then the gradually descending sludge pump pumps out the dispersed silt. When the sludge pump is not in use or the equipment needs to be repaired, the sludge pump together with the mud block dispersion mechanism can be lifted above the hull through the lifting mechanism. The bottom ends of the stirring parts on both sides of the sludge pump are in contact with the base in advance. Since the vertical plate and the support cross - plate are slidably arranged by using guide rails, only a small pressure will be received when the bottom of the stirring part touches the hull. Gradually lower the sludge pump so that the support cross - plate and the sludge pump gradually move downward until the bottom of the sludge pump touches the hull, effectively reducing the force on the stirring part and having good protection for the stirring parts on both sides of the sludge pump during suspension transfer. During the operation of pumping silt, under the action of gravity, the stirring parts on both sides of the sludge pump move downward along the guide rails and contact the deeper silt earlier than the bottom of the sludge pump.

[0013] The water filtering mechanism includes a water storage tank, a sewage discharge end pipe, a filter screen, and a water outlet pipe. The water storage tank is installed above the base. The sewage discharge end pipe penetrates through the water storage tank. One end of the sewage discharge end pipe is communicated with the top end of the sewage discharge hose. A notch is opened at the top of the sewage discharge end pipe inside the water storage tank. The filter screen is fixedly embedded inside the notch. One end of the water outlet pipe is communicated with the bottom of one side of the water storage tank.

[0014] After the sludge pumped out by the sludge pump passes through the sewage discharge hose, it finally discharges through the sewage discharge end pipe. Under the action of the circulation pressure of the sludge passing through the sewage discharge end pipe, part of the water in the sludge filters out from the filter screen and enters the inside of the water storage tank, so that the discharged sludge contains less water, that is, the loading vehicle can load more sludge at one time, improving the actual sludge loading capacity of the loading vehicle. The water source filtered into the water storage tank can flow back to the river through the water outlet pipe.

[0015] In some embodiments of the present application, through holes are provided on both sides of the water storage tank, the sewage discharge end pipe penetrates through the through holes, and sealing rings are provided on the inner sides of the through holes.

[0016] In some embodiments of the present application, the water storage tank includes a box body and a box cover. The box cover is detachably fixed above the box body, and the two through holes are respectively arranged on both sides of the box body.

[0017] In some embodiments of the present application, the cross-sections of the guide rail and the sliding groove are both T-shaped structures that match each other.

[0018] In some embodiments of the present application, the filter screen and the notch are arc-shaped structural mesh plates that match each other.

[0019] In some embodiments of the present application, the hoisting mechanism includes a frame, a winch and a fixed pulley. The frame is installed on the base, the fixed pulley is arranged at the top of the frame, and the wire end of the winch passes through the fixed pulley to suspend the sludge pump.

[0020] In some embodiments of the present application, a guide pulley is arranged on one side of the frame, and the wire of the winch passes through the guide pulley.

[0021] In some embodiments of the present application, the top of the support is fixedly connected to the motor housing.

[0022] In some embodiments of the present application, a through hole is provided in the middle of the support, and the shaft of the motor rotates through the through hole.

[0023] The water source filtered into the water storage tank is directly discharged into the river or used additionally. If the filtered water source can be used as a flushing water source, the stirring part can be cleaned, ensuring that the stirring part is not easily entangled by sludge, effectively reducing the resistance during the rotation of the motor, and having a good protective effect on the motor.

[0024] In some embodiments of the present application, the water filtering mechanism further includes a booster pump, a main return pipe, return branch pipes, and a connecting pipe. The booster pump is installed on the base. One end of the connecting pipe is communicated with the water inlet port of the booster pump, and the other end of the connecting pipe is communicated with the water outlet pipe. One end of the main return pipe is communicated with the water outlet port of the booster pump. One ends of two return branch pipes are communicated with the other end of the main return pipe. The bottom ends of the return branch pipes penetrate through the support near the stirring part. A first valve and a second valve are respectively arranged on the water outlet pipe and the connecting pipe.

[0025] In some embodiments of the present application, the stirring part includes a vertical rod, a bottom plate, arc-shaped blades, and a conical cylinder. The top end of the vertical rod is fixedly connected to the output shaft end of the motor. The bottom plate is fixedly sleeved outside the vertical rod. A plurality of arc-shaped blades are distributed in a clockwise array at the bottom of the bottom plate. The conical cylinder is fixedly installed at the bottom end of the vertical rod.

[0026] When the stirring part is gradually lowered into the sludge by hoisting, the conical cylinder in the stirring part comes into contact with the sludge in advance. When there are sludge blocks in the sludge, the conical cylinder at the bottom first crushes the sludge blocks in the sludge. Then the motor shaft drives the vertical rod to rotate. The rotating vertical rod drives the outer bottom plate and arc-shaped blades. The rotating arc-shaped blades further disperse and crush the crushed sludge blocks, effectively preventing the sludge blocks from blocking the sludge pump.

[0027] Close the first valve and open the second valve. The water filtered out from the discharged sludge falls into the inside of the water storage tank. The booster pump extracts the water source inside the water storage tank through the connecting pipe and the water outlet pipe. The water source pressurized by the booster pump passes through the main return pipe and the return branch pipes to the outside of the stirring part. The high-pressure water source flushes the rotating arc-shaped blades, making the sludge near the arc-shaped blades relatively loose. This not only facilitates the sludge pump to suck the sludge but also can reduce the driving resistance of the motor shaft, having a good protective effect on the motor.

[0028] For the sludge pump and the sludge block dispersing mechanism lifted and rising, the booster pump can still be started for operation during the rising process. That is, the pressurized water source flushes the stirring part in the sludge block dispersing mechanism, washing the sludge on the stirring part clean, and making the equipment transferred to the ship's deck cleaner.

[0029] The water source pressurized by the above-mentioned booster pump is directly sprayed onto the stirring part, and the spraying and dispersing effect is relatively average.

[0030] In some embodiments of the present application, the stirring part further includes a housing, a support rod, a liquid outlet pipe, and a filter screen cover. The housing is movably sleeved outside the vertical rod. The two ends of the support rod are respectively connected to the housing and the bottom of the support. The return branch pipe communicates with the housing. The bottom of the vertical rod is provided with a cavity, and the bottom end of the vertical rod penetrates through the conical barrel. The vertical rod is provided with a water inlet hole communicating with the cavity inside the housing. A plurality of the liquid outlet pipes are inclined outward at the top of the conical barrel and are distributed in an annular array, and the bottom end of the liquid outlet pipe is communicated with the conical barrel. The filter screen cover is fixedly sleeved on the top end of the liquid outlet pipe, and the top of the filter screen cover is in contact with the bottom of the bottom plate.

[0031] The water source pressurized by the booster pump enters the inside of the housing through the return main pipe and the return branch pipe. The water source entering the inside of the housing then enters the inside of the conical barrel through the water inlet hole outside the vertical rod. When it sprays out from the liquid outlet pipe at the top of the conical barrel to the bottom plate, the bottom plate diverts the water source to the peripheral arc-shaped blades, dispersing the silt near the arc-shaped blades, further reducing the resistance of the motor-driven stirring part, and having good protection for the motor. And this flushing method is also more uniform and efficient. The filter screen cover at the top of the liquid outlet pipe prevents external silt from entering the inside of the liquid outlet pipe.

[0032] The present application also provides a silt cleaning method, including the above-mentioned dredging and silt cleaning device based on cross-sectional flow and the following steps:

[0033] Step A: Lower the sludge pump. The hull drives the whole device to move to the river section where sludge needs to be cleaned, and the lifting mechanism lowers the suspended sludge pump into the silt at the cross-section of the river section.

[0034] Step B: Clean the silt. The sludge pump operates to pump the silt at the river cross-section through the vertical pipe and the sewage discharge hose respectively, and finally the silt is discharged from the sewage discharge end pipe. While the sludge pump is operating, the motor is running, and the motor drives the stirring part to rotate to crush and clean the massive soil near the sludge pump, ensuring that the sludge pump stably cleans the silt in the river cross-section.

[0035] Step C: Dewater the sludge. Part of the water source in the sewage discharge end pipe filters out from the filter screen into the inside of the water storage tank under the pressure difference and finally discharges from the water outlet pipe, reducing the water content in the discharged sludge.

[0036] The beneficial effects of the present application are as follows: A dredging and silt removal device and method based on cross-sectional flow designed as described above in the present application. The motor drives the stirring part at the bottom to rotate. The rotating stirring part can pre-crush the silt blocks at the bottom of the silt into small pieces. Then, the sludge pump moves downward and the sludge blocks it extracts have already become in a crushed state. The sludge pump can operate normally for a long time to extract the silt in the river cross-section, that is, the sludge pump is not likely to become blocked during the process of extracting the sludge in the river cross-section. During hoisting and maintenance, the bottom ends of the stirring parts on both sides of the sludge pump are pre-contacted with the base. Since the vertical plate and the supporting cross-plate are slidably arranged using guide rails, only a small pressure is exerted when the bottom of the stirring part contacts the hull.

[0037] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0039] Figure 1 is a schematic structural diagram of a dredging and silt removal device and method based on cross-sectional flow according to an embodiment of the present application;

[0040] Figure 2 is a schematic structural diagram of a hoisting mechanism, a silt removal mechanism, a mud block dispersion mechanism, and a water filtration mechanism according to an embodiment of the present application;

[0041] Figure 3 is a schematic structural diagram of a hoisting mechanism according to an embodiment of the present application;

[0042] Figure 4 is a schematic structural diagram of a silt removal mechanism, a mud block dispersion mechanism, and a water filtration mechanism according to an embodiment of the present application;

[0043] Figure 5 is a schematic vertical cross-sectional structure diagram of a sewage discharge end pipe and a water storage tank according to an embodiment of the present application;

[0044] Figure 6 is a schematic structural diagram of a mud block dispersion mechanism according to an embodiment of the present application;

[0045] Figure 7 is a schematic structural diagram of a stirring part according to an embodiment of the present application;

[0046] Figure 8Schematic cross-sectional structure diagram of the vertical rod, conical barrel and housing according to an embodiment of the present application.

[0047] Icon:

[0048] 10 - Hull; 110 - Base; 20 - Hoisting mechanism; 210 - Frame; 220 - Winch; 230 - Fixed pulley; 240 - Guide pulley; 30 - Dredging mechanism; 310 - Sludge pump; 320 - Vertical pipe; 330 - Sewage hose; 40 - Mud block dispersion mechanism; 410 - Support cross plate; 420 - Vertical plate; 430 - Side seat; 440 - Support; 450 - Motor; 460 - Limit block; 470 - Guide rail; 480 - Stirring part; 481 - Vertical rod; 482 - Bottom plate; 483 - Arc blade; 484 - Conical barrel; 485 - Housing; 486 - Support rod; 487 - Water inlet hole; 488 - Liquid outlet pipe; 489 - Filter screen cover; 50 - Water filtering mechanism; 510 - Water storage tank; 511 - Sealing ring; 520 - Sewage end pipe; 530 - Filter screen; 540 - Water outlet pipe; 541 - First valve; 550 - Booster pump; 560 - Main return pipe; 570 - Return branch pipe; 580 - Connecting pipe; 581 - Second valve. Detailed implementation manners

[0049] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0050] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0051] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0052] A dredging and sludge removal device and method based on cross-sectional flow rate according to an embodiment of the present application will be described below with reference to the drawings.

[0053] Please refer to Figures 1-8 , a dredging and sludge removal device based on cross-sectional flow rate according to an embodiment of the present application, comprising: a hull 10, a hoisting mechanism 20, a dredging mechanism 30, a mud block dispersion mechanism 40 and a water filtering mechanism 50.

[0054] Among them, the hull 10 is used to carry the entire device. The lifting mechanism 20 lifts the sludge pump 310 in the dredging mechanism 30 to pump the silt at the river cross-section. The mud block dispersion mechanism 40 crushes the mud blocks in the silt when the sludge pump 310 pumps the silt, and the water filtering mechanism 50 can treat the water in the pumped sludge.

[0055] Please refer to Figure 2 and Figure 4 , a base 110 is provided on the deck of the hull 10. The lifting mechanism 20 is installed above the base 110. The dredging mechanism 30 includes a sludge pump 310, a vertical pipe 320, and a sewage discharge hose 330. The sludge pump 310 is hoisted at the lifting end of the lifting mechanism 20, the bottom end of the vertical pipe 320 is connected to the output port of the sludge pump 310, and the bottom end of the sewage discharge hose 330 is connected to the top end of the vertical pipe 320.

[0056] The lifting mechanism 20 can lift the dredging mechanism 30 and place it at the silt of the river cross-section. The sludge pump 310 operates to pump out the silt at the river cross-section, and the silt is discharged through the vertical pipe 320 and the sewage discharge hose 330, so that the discharged sludge can be transported and transferred by a carrier vehicle on the river bank.

[0057] Please refer to Figure 6 , the mud block dispersion mechanism 40 includes a support cross plate 410, a vertical plate 420, a side seat 430, a support 440, a motor 450, a limit block 460, a guide rail 470, and a stirring part 480. The support cross plate 410 is fixedly sleeved outside the sludge pump 310. Two groups of vertical plates 420 are respectively located on both sides of the support cross plate 410. Chute grooves are provided at both ends of the support cross plate 410. Two groups of guide rails 470 respectively slide through the chute grooves, and the two groups of guide rails 470 are respectively fixedly arranged on the opposite sides of the two vertical plates 420. The guide rail 470 and the vertical plate 420 are fixed by welding. Two side seats 430 are respectively arranged on the opposite sides of the two vertical plates 420. The side seat 430 and the vertical plate 420 are fixed by welding. The motor 450 is installed on the side of the side seat 430 away from the vertical plate 420. The support 440 is arranged below the motor 450, and the output shaft end of the motor 450 rotates through the support 440. The stirring part 480 is located below the support 440 and is connected to the output shaft end of the motor 450. Two limit blocks 460 are respectively fixedly arranged at the top and bottom ends of the vertical plate 420.

[0058] While the sludge pump 310 pumps the silt at the river cross-section, the motor 450 also starts to operate. The motor 450 drives the stirring part 480 at the bottom to rotate. The rotating stirring part 480 can pre-crush the mud blocks at the bottom of the silt into small pieces. Then, when the sludge pump 310 moves downward, the pumped sludge blocks are already in a crushed state. The sludge pump 310 can operate normally for a long time to pump the silt in the river cross-section. That is, the sludge pump 310 is not likely to be blocked during the process of pumping the sludge at the river cross-section.

[0059] When both the sludge pump 310 and the motor 450 are operating to pump and crush sludge, the stirring part 480 at the bottom of the motor 450 will be 27 cm to 32 cm lower than the bottom of the sludge pump 310. That is, when the sludge pump 310 pumps sludge, the stirring part 480 can always pre-stir and disperse the sludge blocks at the bottom in advance, and then the gradually descending sludge pump 310 removes the dispersed sludge. When the sludge pump 310 is not in use or the equipment needs to be overhauled, the sludge pump 310 together with the sludge block dispersing mechanism 40 can be lifted above the hull 10 by the lifting mechanism 20. The bottom ends of the stirring parts 480 on both sides of the sludge pump 310 are in contact with the base 110 in advance. Since the vertical plate 420 and the supporting cross plate 410 are slidably arranged by the guide rail 470, only a small pressure will be received when the bottom of the stirring part 480 contacts the hull 10. Gradually lower the sludge pump 310 so that the supporting cross plate 410 and the sludge pump 310 gradually move downward until the bottom of the sludge pump 310 contacts the hull 10, effectively reducing the force on the stirring part 480 and providing good protection for the stirring parts 480 on both sides of the sludge pump 310 during suspension transfer. During the operation of pumping sludge, under the action of gravity, the stirring parts 480 on both sides of the sludge pump 310 move downward along the guide rail 470 and contact the deeper sludge earlier than the bottom of the sludge pump 310.

[0060] Please refer to Figure 4 and Figure 5 As shown in, the water filtering mechanism 50 includes a water storage tank 510, a sewage discharge end pipe 520, a filter net 530 and a water outlet pipe 540. The water storage tank 510 is installed above the base 110. The sewage discharge end pipe 520 penetrates through the water storage tank 510, and one end of the sewage discharge end pipe 520 is connected to the top end of the sewage discharge hose 330. A notch is opened at the top of the sewage discharge end pipe 520 inside the water storage tank 510, and the filter net 530 is fixedly embedded inside the notch, that is, the filter net 530 and the sewage discharge end pipe 520 are fixed by welding. One end of the water outlet pipe 540 is communicated with the bottom of one side of the water storage tank 510.

[0061] The sludge pumped out by the sludge pump 310 finally discharges through the sewage discharge end pipe 520 after passing through the sewage discharge hose 330. Under the action of the flowing pressure of the sludge passing through the sewage discharge end pipe 520, part of the water in the sludge filters out from the filter net 530 and enters the inside of the water storage tank 510, that is, the discharged sludge contains less water, so that the loading vehicle can load more sludge at one time, improving the actual sludge loading capacity of the loading vehicle. The water source filtered into the water storage tank 510 can flow back to the river through the water outlet pipe 540.

[0062] In the above specific embodiments, please refer to Figure 3, the hoisting mechanism 20 includes a frame 210, a winch 220, and a fixed pulley 230. The frame 210 is installed on the base 110, the fixed pulley 230 is arranged at the top of the frame 210, and the wire end of the winch 220 passes through the fixed pulley 230 to suspend the sludge pump 310. A guiding pulley 240 is arranged on one side of the frame 210, and the wire of the winch 220 passes through the guiding pulley 240. The winch 220 in the hoisting mechanism 20 drives the hoisting of the sludge pump 310 and the mud block dispersion mechanism 40 through the cooperation of winding the steel wire rope with the fixed pulley 230 and the guiding pulley 240.

[0063] For specific settings, please refer to Figure 5 , through openings are provided on both sides of the water storage tank 510, the sewage discharge end pipe 520 penetrates through the through openings, and a sealing ring 511 is arranged inside the through openings; the sealing ring 511 enables better sealing performance between the water storage tank 510 and the sewage discharge end pipe 520. The water storage tank 510 includes a box body and a box cover, the box cover is detachably fixed above the box body, and the two through openings are respectively arranged on both sides of the box body. The box cover and the box body can be fixed by bolts, which is convenient for overhauling the components inside the box body.

[0064] Further, please refer to Figure 5 and Figure 6 , the cross-sections of the guide rail 470 and the chute are both T-shaped structures that match each other, and the T-shaped guide rail 470 can move more stably along the chute. The filter screen 530 and the notch are arc-shaped structure mesh plates that match each other, and the arc-shaped mesh plate forms a complete tubular structure with the original sewage discharge end pipe 520 inside the notch.

[0065] Further, please refer to Figure 6 , the top of the support 440 is fixedly connected to the outer shell of the motor 450, and the support 440 and the outer shell of the motor 450 are fixed by bolts. A through hole is provided in the middle of the support 440, and the shaft of the motor 450 rotates through the through hole.

[0066] The water source filtered into the water storage tank 510 is directly discharged into the river or used additionally. If the filtered water source can be used as a flushing water source, the stirring part 480 can be cleaned, which can prevent the stirring part 480 from being entangled by sludge, effectively reduce the resistance during the rotation of the motor 450, and has a good protective effect on the motor 450.

[0067] In some embodiments of the present application, please refer to Figure 4 and Figure 7, the water filtering mechanism 50 further includes a booster pump 550, a main return pipe 560, return branch pipes 570, and a connecting pipe 580. The booster pump 550 is installed on the base 110. One end of the connecting pipe 580 is communicated with the water inlet port of the booster pump 550, and the other end of the connecting pipe 580 is communicated with the water outlet pipe 540. One end of the main return pipe 560 is communicated with the water outlet port of the booster pump 550. One ends of the two return branch pipes 570 are communicated with the other end of the main return pipe 560. The bottom ends of the return branch pipes 570 penetrate through the support 440 and are close to the stirring part 480. A first valve 541 and a second valve 581 are respectively arranged on the water outlet pipe 540 and the connecting pipe 580. The stirring part 480 includes a vertical rod 481, a bottom plate 482, arc-shaped blades 483, and a conical cylinder 484. The top end of the vertical rod 481 is fixedly connected to the output shaft end of the motor 450. The bottom plate 482 is fixedly sleeved outside the vertical rod 481. A plurality of arc-shaped blades 483 are arranged in a clockwise array at the bottom of the bottom plate 482. The conical cylinder 484 is fixedly installed at the bottom end of the vertical rod 481; the conical cylinder 484 and the vertical rod 481 are fixedly connected by welding.

[0068] When the stirring part 480 is gradually lowered into the sludge during hoisting, the conical cylinder 484 in the stirring part 480 comes into contact with the sludge in advance. When there are sludge blocks in the sludge, the conical cylinder 484 at the bottom first crushes the sludge blocks in the sludge. Then the shaft of the motor 450 drives the vertical rod 481 to rotate. The rotating vertical rod 481 drives the external bottom plate 482 and arc-shaped blades 483. The rotating arc-shaped blades 483 further disperse and crush the crushed sludge blocks, effectively preventing the sludge blocks from blocking the sludge pump 310.

[0069] Close the first valve 541 and open the second valve 581. The water filtered out from the discharged sludge falls into the inside of the water storage tank 510. The booster pump 550 extracts the water source inside the water storage tank 510 through the connecting pipe 580 and the water outlet pipe 540. The water source pressurized by the booster pump 550 passes through the main return pipe 560 and the return branch pipes 570 to the outside of the stirring part 480. The high-pressure water source flushes the rotating arc-shaped blades 483, making the sludge near the arc-shaped blades 483 relatively loose. This not only facilitates the sludge pump 310 to suck the sludge but also can reduce the driving resistance of the shaft of the motor 450, playing a good protective role for the motor 450.

[0070] When the sludge pump 310 and the sludge block dispersion mechanism 40 are hoisted and lifted, the booster pump 550 can still be started for operation during the rising process. That is, the pressurized water source flushes the stirring part 480 in the sludge block dispersion mechanism 40, washing the sludge on the stirring part 480 clean, and making the equipment transferred to the deck of the hull 10 cleaner.

[0071] The water source pressurized by the above-mentioned booster pump 550 is directly sprayed onto the stirring part 480, and the spraying and dispersion effect is relatively general.

[0072] In some embodiments of the present application, please refer to Figure 7 and Figure 8 , the stirring part 480 further includes a housing 485, a support rod 486, a liquid outlet pipe 488 and a filter screen cover 489. The housing 485 is movably sleeved outside the vertical rod 481. The two ends of the support rod 486 are respectively connected to the housing 485 and the bottom of the support 440. The support rod 486 is fixed to the housing 485 and the support 440 by bolts respectively. The return branch pipe 570 communicates with the housing 485. The bottom of the vertical rod 481 is provided with a cavity, and the bottom end of the vertical rod 481 penetrates through the conical cylinder 484. The inner section of the vertical rod 481 inside the housing 485 is provided with a water inlet hole 487 communicating with the cavity. A plurality of liquid outlet pipes 488 are inclined outward at the top of the conical cylinder 484 and are distributed in an annular array. The bottom end of the liquid outlet pipe 488 is communicated with the conical cylinder 484, and the liquid outlet pipe 488 and the conical cylinder 484 are fixed by welding. The filter screen cover 489 is fixedly sleeved on the top end of the liquid outlet pipe 488, and the top of the filter screen cover 489 is in contact with the bottom of the bottom plate 482.

[0073] The water source pressurized by the booster pump 550 enters the inside of the housing 485 through the return main pipe 560 and the return branch pipe 570. The water source entering the inside of the housing 485 then enters the inside of the conical cylinder 484 through the water inlet hole 487 outside the vertical rod 481, and then sprays onto the bottom plate 482 through the liquid outlet pipe 488 at the top of the conical cylinder 484. The bottom plate 482 diverts the water source to the peripheral arc-shaped blades 483, dispersing the silt near the arc-shaped blades 483, further reducing the resistance of the motor 450 to drive the stirring part 480, and providing good protection for the motor 450. And this flushing method is also more uniform and efficient. The filter screen cover 489 at the top of the liquid outlet pipe 488 prevents external silt from entering the inside of the liquid outlet pipe 488.

[0074] The present application also provides a dredging method, including the described dredging and silt removal device based on cross-sectional flow and the following steps:

[0075] Step A: Lower the sludge pump 310. The hull 10 drives the whole device to move to the river section where sludge needs to be cleaned, and the lifting mechanism 20 lowers the suspended sludge pump 310 into the silt at the cross-section of the river section.

[0076] Step B: Clean the silt. The sludge pump 310 operates to pump the silt from the cross-section of the river through the vertical pipe 320 and the sewage hose 330 respectively, and finally the silt is discharged from the sewage end pipe 520. While the sludge pump 310 is operating, the motor 450 is operating, and the motor 450 drives the stirring part 480 to rotate to crush and clean the massive soil near the sludge pump 310, ensuring that the sludge pump 310 stably cleans the silt in the river section.

[0077] Step C: Dewatering the sludge. Part of the water source in the sewage discharge end pipe 520 filters out through the filter screen 530 into the interior of the water storage tank 510 under the pressure difference and finally discharges from the water outlet pipe 540, reducing the moisture in the discharged sludge.

[0078] It should be noted that the specific model specifications of the above-mentioned motor 450 and booster pump 550 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail. The power supply and principle of the motor 450 and booster pump 550 are clear to those skilled in the art and will not be described in detail here.

[0079] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0080] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A dredging and silt removal device based on cross-sectional flow rate, characterized in that, Comprising: A hull (10) with a base (110) provided on the deck of the hull (10); A hoisting mechanism (20) installed above the base (110); A dredging mechanism (30) including a sludge pump (310), a vertical pipe (320), and a sewage discharge hose (330). The sludge pump (310) is hoisted at the hoisting end of the hoisting mechanism (20). The bottom end of the vertical pipe (320) is connected to the output port of the sludge pump (310), and the bottom end of the sewage discharge hose (330) is connected to the top end of the vertical pipe (320); A mud block dispersing mechanism (40) including a support cross plate (410), vertical plates (420), side seats (430), supports (440), a motor (450), limit blocks (460), guide rails (470), and a stirring part (480). The support cross plate (410) is fixedly sleeved outside the sludge pump (310). The two vertical plates (420) are respectively located on both sides of the support cross plate (410). Chute grooves are provided at both ends of the support cross plate (410). The two guide rails (470) respectively slide through the chute grooves and are fixedly arranged on the opposite sides of the two vertical plates (420). The two side seats (430) are respectively arranged on the back sides of the two vertical plates (420). The motor (450) is installed on the side of the side seat (430) away from the vertical plate (420). The support (440) is arranged below the motor (450), and the output shaft end of the motor (450) rotates through the support (440). The stirring part (480) is located below the support (440) and is connected to the output shaft end of the motor (450). The two limit blocks (460) are respectively fixedly arranged at the top and bottom ends of the vertical plate (420); A water filtering mechanism (50) including a water storage tank (510), a sewage discharge end pipe (520), a filter screen (530), and a water outlet pipe (540). The water storage tank (510) is installed above the base (110). The sewage discharge end pipe (520) penetrates through the water storage tank (510). One end of the sewage discharge end pipe (520) is connected to the top end of the sewage discharge hose (330). A notch is provided at the top of the sewage discharge end pipe (520) inside the water storage tank (510). The filter screen (530) is fixedly embedded inside the notch. One end of the water outlet pipe (540) is communicated with the bottom of one side of the water storage tank (510).

2. The dredging and silt removal device based on cross-sectional flow rate according to claim 1, characterized in that, Through openings are provided on both sides of the water storage tank (510). The sewage discharge end pipe (520) penetrates through the through openings, and sealing rings (511) are arranged inside the through openings.

3. The dredging and silt removal device based on cross-sectional flow rate according to claim 2, wherein, The water storage tank (510) includes a box body and a box cover. The box cover is detachably fixed above the box body, and the two through openings are respectively arranged on both sides of the box body.

4. The dredging and silt removal device based on cross-sectional flow rate according to claim 1, characterized in that, The cross sections of the guide rails (470) and the chute grooves are both T-shaped structures that match each other.

5. The dredging and silt removal device based on cross-sectional flow rate according to claim 1, wherein The filter screen (530) and the notch are arc-shaped structural mesh plates that match each other.

6. The dredging and silt removal device based on cross-sectional flow rate according to claim 1, characterized in that, The hoisting mechanism (20) includes a frame (210), a winch (220) and a fixed pulley (230). The frame (210) is installed on the base (110). The fixed pulley (230) is arranged at the top of the frame (210). The wire end of the winch (220) passes through the fixed pulley (230) to suspend the sludge pump (310).

7. The dredging and silt removal device based on cross-sectional flow rate according to claim 6, characterized in that, A guide pulley (240) is arranged on one side of the frame (210), and the wire of the winch (220) passes through the guide pulley (240).

8. The dredging and silt removal device based on cross-sectional flow rate according to claim 1, characterized in that, The top of the support (440) is fixedly connected to the outer shell of the motor (450).

9. The dredging and silt removal device based on cross-sectional flow rate according to claim 8, wherein, A through hole is formed in the middle of the support (440), and the shaft of the motor (450) rotates through the through hole.

10. A dredging method, characterized in that, It includes a dredging and silt cleaning device based on cross-sectional flow according to any one of claims 1-9 and the following steps: Step A: Lower the sludge pump (310). The hull (10) drives the whole device to move to the river section where sludge needs to be cleaned. The hoisting mechanism (20) lowers the suspended sludge pump (310) into the silt at the cross-section of the river section. Step B: Clean the silt. The sludge pump (310) operates to pump the silt at the river cross-section through the vertical pipe (320) and the sewage hose (330) respectively. Finally, the silt is discharged from the sewage end pipe (520). While the sludge pump (310) is operating, the motor (450) operates. The motor (450) drives the stirring part (480) to rotate to crush and clean the massive soil near the sludge pump (310), ensuring that the sludge pump (310) stably cleans the silt in the river cross-section. Step C: Dewater the sludge. Part of the water source in the sewage end pipe (520) filters out from the filter screen (530) into the inside of the water storage tank (510) under the pressure difference and is finally discharged from the water outlet pipe (540) to reduce the water content in the discharged sludge.

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