CN110512674B - River dredging screening dredging method and equipment - Google Patents
River dredging screening dredging method and equipment Download PDFInfo
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- CN110512674B CN110512674B CN201910727579.4A CN201910727579A CN110512674B CN 110512674 B CN110512674 B CN 110512674B CN 201910727579 A CN201910727579 A CN 201910727579A CN 110512674 B CN110512674 B CN 110512674B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012216 screening Methods 0.000 title claims description 44
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 82
- 239000004575 stone Substances 0.000 claims abstract description 68
- 238000007667 floating Methods 0.000 claims abstract description 63
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 16
- 238000007873 sieving Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000003028 elevating effect Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 5
- 239000013049 sediment Substances 0.000 description 5
- 239000010802 sludge Substances 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 238000009333 weeding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/94—Apparatus for separating stones from the dredged material, i.e. separating or treating dredged material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The river channel dredging sieving and dredging method and apparatus adopts negative pressure acting composite elevating structure to separate out stone with great density and floating garbage with small density from the garbage entrained in mud and collect the garbage separately; the problems of complex and various garbage in middle and small river channels and difficult mechanical construction are effectively solved, the interception rate of stones and floating garbage reaches more than 90%, the self-priming capacity is strong, the conveying operation is stable, the structure is simple and compact, and the disassembly, the assembly and the maintenance are convenient. The dredging construction efficiency is remarkably improved, the labor force is liberated, the dredging mechanization of the middle and small river is realized, and the dredging construction method is suitable for popularization and use.
Description
Technical Field
The invention relates to an underwater dredging technology suitable for small and medium river channels, belongs to the technical field of dredgers with special purposes of treatment of IPC classification C02F11/00 sludge or E02F5/00, and particularly relates to a river channel dredging screening dredging method and equipment.
Background
The Mud Pump (Mud Pump) is a Pump with a wide application field, and the applied Mud Pump in the petroleum drilling field has been developed rapidly. In fact, some non-clean water pumps such as sewage pumps, slurry pumps, etc. are also commonly referred to as mud pumps.
The common slurry pump is of a piston type or a plunger type, a power machine drives a crankshaft of the pump to rotate, and the crankshaft drives a piston or a plunger to reciprocate in a pump cylinder through a cross head. Under the alternate action of the suction valve and the discharge valve, the purposes of pressure feeding and circulating flushing liquid are realized. Two main parameters of mud pump performance are displacement and pressure.
The middle and small river channels are widely distributed, some town river channels are polluted by industrial sewage discharge, even some small industrial wastes and household garbage are discarded in the river channels, and the sludge treatment naturally becomes a great difficulty in the treatment of the middle and small river channels. Usually, dredging engineering of the middle and small river channels is finished based on manual physical effort. When the siltation occurs, the industrial and agricultural production and the resident life are seriously affected. The dredging of middle and small river channels is affected by urban traffic, bridge and culvert, two-bank construction, mud stacking field, flood prevention, water quality, environmental protection and the like, and partial middle river channels adopt ship dredging, and partial middle river channels and town small river channels mostly adopt a drainage dredging mode, namely manual hydraulic flushing. The artificial hydraulic flushing construction process is extremely easy to be influenced by weather, water body exchange and flood prevention, and can easily influence the side slope of the river channel and the ecological system to a certain extent. In the process of the flushing construction, the side slope landslide is easy to be caused, and the safety and stability of the revetment or the flood control wall and the safety of surrounding buildings are threatened. In addition, various middle and small river channels have different conditions and complex construction conditions, and the construction requirements can be better met only by respectively providing a dredging machine which is suitable for the specific conditions of the river channels.
At present, the dredging mode of the small and medium-sized river channels in China has low dredging efficiency and poor effect, stays in the original labor state, and can not meet the actual requirements in variety and quantity. Therefore, it is highly demanded to realize mechanization of dredging work.
The related published patent documents are found to be less.
Chinese patent document No. CN208266957U discloses a river dredging ship in 2018, 7 months and 21 days, including the hull, set up the dredging device on the hull, the dredging device includes the support subassembly and connects the shovel mud subassembly on the support subassembly, shovel mud subassembly include with support subassembly fixed connection netted shovel mud board, the edge of shovel mud board is provided with the baffle that is used for making silt restriction on shovel mud board, shovel mud board with hold up between the subassembly and seted up shovel mud hole, be provided with the guide board that is used for blockking shovel mud hole in the hull. Through be provided with the lift plate of being connected with ship end gear wheel rotation at the one end of ship, with lift plate fixed connection's shovel mud board, through adjusting gear after shovel mud is finished for the lift plate takes place to incline, makes the silt on the shovel mud board slide to the hull along with the lift plate in, thereby accomplishes the desilting operation to the river course.
The patent document No. CN207974180U discloses a city river dredging ship in 2018, 10 months and 16 days, which comprises a ship body, wherein the front end of the ship body is provided with a liftable sludge digging and sucking mechanism, the sludge digging and sucking mechanism is positioned on the water surface or under water, the rear end of the ship body is provided with a liftable propelling mechanism, the propelling mechanism is positioned on the water surface or under water, the ship body is provided with an operation bin, an operation table is arranged in the operation bin, the operation bin comprises a support column and a ceiling, and the support column and the ceiling are of a detachable structure. The dredging ship has the advantage that the dredging ship can pass through a short urban river bridge.
The utility model provides a chinese patent document CN207862900U discloses a river course dredging ship convenient to clearance pasture and water in 2018 9 month 14 day, including hull, slide rail, support, silt groove, collecting vat and blade disc, the afterbody fixedly connected with slide rail of hull, inlay between the slide rail has the support, install the conveyer belt on the hypotenuse of support, the surface distribution of conveyer belt has a plurality of fixed plates, fixedly connected with arc on the fixed plate, the both sides fixedly connected with positive and negative motor of hull, the axle extension fixedly connected with gear of positive and negative motor, the bow position of hull articulates there is the deflector, the right-hand member fixedly connected with dirt removal board of deflector, the bottom fixedly connected with weeding motor of hull, utilize the arc to scrape the silt of river course bottom and transport to deposit in the silt groove, can be according to the income water depth adjustment conveyer belt left end, make the arc contact with the silt of water bottom all the time, improve dredging efficiency, utilize dirt removal board and salvage nail to hook debris of the surface put into the collecting vat, utilize the pasture in the cut-off water.
As described above, most of the existing dredging apparatuses are directed to large and medium-sized river channels, and cannot cope with the complex situations of the medium and small river channels. The large dredging equipment and the dredging ship are basically built for large-scale dredging engineering of ports, channels or large rivers, and cannot enter into construction of middle and small river channels. Therefore, the invention is urgent to invent an underwater dredging device for small and medium river channels.
Further, the technical scheme of the corresponding simple dredging equipment is also disclosed:
china patent application 201811380372.6 harbour dredging mud treatment structure, including the barge, install hydraulic pump and lift on the barge, its characterized in that, install pressure cylinder and separating drum on the lift side by side, the bottom of pressure cylinder and separating drum is equipped with the passage connection, and the top of separating drum still is connected with the slush pump, and the slush pump passes through the inlet pipe and is connected with the suction dredge device of laying in aqueous, wherein: the hydraulic cylinder controlled by the hydraulic pump is arranged in the pressure cylinder, and a push plate is arranged at the top of the hydraulic cylinder.
Chinese patent application 201721830595.9 discloses a dredging sediment leaching device comprising three bin bodies, which are a screening bin, a leaching bin and a consolidation bin respectively; the screening bin is internally provided with a vibrating screen and a slurry pump; the inside of the leaching bin is provided with a stirrer, a spray header, an overflow weir and a water collecting tank; the consolidation bin is internally provided with a dehydration device and a doser.
Dredging equipment of this type is usually a mobile integrated device, which needs to be placed on a transport device, sent to the vicinity of a river or lake where the dredging sediment is to be treated, rinsed with sediment, reduced in the content of contaminants in the sediment, rendered harmless and reduced in the dredging sediment, and provided for further recycling applications. However, this kind of technology does not involve the reality of complex components in river sludge, and few improvements adopt complex structures, and are also limited in application and effect because they are not suitable for dredging working environments.
Disclosure of Invention
The invention aims to provide a river dredging screening dredging method and equipment, solve the problem that the prior art is not suitable for complex conditions of the components of small and medium river silt garbage, and realize energy conservation, stability, economy and effectiveness of dredging work.
The object of the invention is achieved by the following technical measures: comprises a box body, a floating garbage screening box, a stone collecting device, a slurry pump, a slurry pipe, a slurry inlet, a slurry outlet, a stone outlet and a slurry jet orifice; the slurry pump is arranged on one side outside the box body, the slurry pipe is arranged on the lower portion of the other side outside the box body, the slurry inlet is arranged at the outer end of the slurry pipe, the inner end of the slurry pipe is connected into a stone collecting device vertically arranged in the box body through a slurry jet orifice, the slurry jet orifice is inclined upwards, the floating garbage screening box is arranged at the top of the stone collecting device, the slurry pump is externally connected with a slurry discharge port, the slurry pump is inwards connected into a gap between the outer wall of the stone collecting device at the bottom of the box body and the inner wall of the box body, the bottom end of the stone collecting device 3 is connected with the bottom of the box body and is connected with a stone discharge port, and a middle hole is arranged on a connecting interface between the bottom of the floating garbage screening box and the top of the stone collecting device 3. The fluid channel in the equipment adopts a composite lifting structure, and under the negative pressure effect of the vacuum of the slurry pump, the pressure intensity at one side of the slurry discharge port is always obviously lower than that of the slurry feed port; under the effect of pressure difference, the mud jet orifice that sets up in stone collection device, jet fluid trace be the parabola, and stone class density is great debris because dead weight reason whereabouts separation to stone collection device bottom, and the mud presss from both sides the lower debris of floating rubbish class density, then upwards dashes through setting up the middle part rubber mouth on the showy rubbish screening box bottom and stone collection device top interface under the negative pressure guide, and the rubber mouth can be closed again automatically after the slush pump stop work.
In particular, the stone collecting device is of a conical tubular structure.
In particular, a unidirectional guide plate is arranged in a passage at the connecting part of the mud pipe and the mud jet orifice.
In particular, the central axis of the slurry injection port passes upward through the middle of the middle hole.
In particular, the outer wall of one side of the floating garbage screening box is provided with a cleaning door, the outer wall of the box body corresponding to the cleaning door is provided with a floating garbage discharge port, and the door body of the floating garbage discharge port is hinged on the outer wall of the box body through a push type lock catch and a spring hinge.
In particular, the bottom of the stone discharge hole is provided with a cover plate for sealing; the joint of the stone discharging hole and the stone collecting device is provided with another group of spring hinges and pressing type lock catches.
In particular, sieve holes are distributed on the bottom plate and the vertical wall of the floating garbage sieving box, a middle hole is formed in the middle of the bottom plate of the floating garbage sieving box, a rubber port is arranged on the middle hole, an elastic spoke type centripetal filter plate is circumferentially distributed on the rubber port, the centripetal filter plate is in a fan shape or a pointed cone shape, namely radial gaps are formed between adjacent filter plates, and all the radial gaps are communicated at the center of the rubber port.
The invention has the advantages and effects that: the composite lifting structure with negative pressure effect is adopted to screen out the two kinds of the stone with larger density and the floating garbage with smaller density from the garbage entrained in the slurry by the dead weight of the garbage and collect the two kinds of the floating garbage respectively, so that the problems of complex and various garbage and difficult mechanized construction of middle and small river channels are effectively solved, the interception rate of the stone and the floating garbage is more than 90%, the self-priming capability is strong, the conveying operation is stable, the structure is simple and compact, and the disassembly, the assembly and the maintenance are convenient. The dredging construction efficiency is remarkably improved, the labor force is liberated, the dredging mechanization of the middle and small river is realized, and the dredging construction method is suitable for popularization and use.
Drawings
Fig. 1 is a schematic diagram of the operation of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a schematic view of the main structure of the interior of the case according to an embodiment of the present invention.
Fig. 4 is a schematic view of the bottom structure of the discharge hole of the box body and the stone in the embodiment of the invention.
Fig. 5 is a schematic top view of a floating garbage screening box according to an embodiment of the present invention.
The reference numerals include:
1-box body, 2-floating garbage screening box, 3-stone collecting device, 4-slurry pump, 5-slurry pipe, 6-slurry inlet, 7-slurry outlet, 8-floating garbage outlet, 9-stone outlet, 10-press lock catch, 11-spring hinge, 12-slurry injection port and 13-handle; 201-mesopores, 202-sieve pores and 203-rubber openings.
Detailed Description
The principle of the invention is that as shown in the attached body 1, a composite lifting structure is adopted in the fluid channel in the equipment, and under the negative pressure effect of the vacuum pumping of the slurry pump 4, the pressure intensity at one side of the slurry discharge port 7 is always obviously lower than that of the slurry feed port 6; under the action of pressure difference, mud and other rubbish in the river channel enter the cavity channel of the compound lifting structure of the equipment along the mud pipe 5, the mud jet orifice 12 arranged in the stone collecting device 3 is discharged by the mud jet orifice 12 due to the increase of the channel section and the release of fluid pressure, the jet fluid trace is parabolic, the impurities with larger density of stones fall and separate to the bottom of the stone collecting device 3 due to the dead weight, the mud clamps the impurities with lower density of floating rubbish, the mud is upwards rushed under the guide of negative pressure through the rubber orifice 203 arranged at the upper middle part of the connecting interface of the bottom of the floating rubbish screening box 2 and the top of the stone collecting device 3, the rubber orifice 203 under the action of negative pressure is elastically deformed and upwards rolled to form an upward channel, meanwhile, the spoke-shaped centripetal filter plate with the elasticity of the rubber orifice 203 keeps an upward unidirectional filtering state in the deformation process, after the operation of the mud pump 4 stops, the rubber orifice 203 is automatically closed, therefore, the floating rubbish is finally detained in the floating rubbish screening box 2, the mud flows into the bottom of the box 1 through the bottom of the floating rubbish screening box 2 and the vertical wall filter Kong Lvguo, and can be further extracted out from the mud outlet 7.
In the invention, after the river bottom mud is diluted, further, the river bottom mud is pumped into the box body 1 together with other garbage in the river, and stone is separated by the stone collecting device 3 according to the self weight principle. The mud and the floating garbage enter the floating garbage screening box 2 for further screening under the action of strong hydraulic pressure, and finally the mud is pumped to a designated place through the mud pump 4. Effectively intercept floating garbage in mud and solve the problem that the pump opening of the mud pump 4 is easy to be blocked. The device is suitable for complex and various working conditions of middle and small river garbage, can be carried on dredging machinery, liberates labor force and achieves the effect of rapid dredging. Greatly improves the construction efficiency of the machine, is beneficial to realizing the dredging mechanization of the medium and small river channels, and has great significance for ecological environment management and town construction.
The invention comprises the following steps:
the garbage collection device comprises a box body 1, a floating garbage screening box 2, a stone collection device 3, a slurry pump 4, a slurry pipe 5, a slurry inlet 6, a slurry outlet 7, a stone outlet 9 and a slurry jet orifice 12.
The invention is further described below with reference to the drawings and examples.
Example 1: as shown in figure 2, a slurry pump 4 is arranged on one side outside the box body 1, a slurry pipe 5 is arranged on the lower portion of the other side outside the box body 1, a slurry inlet 6 is arranged at the outer end of the slurry pipe 5, the inner end of the slurry pipe 5 is connected into a stone collecting device 3 vertically arranged in the box body 1 through a slurry jet orifice 12, the slurry jet orifice 12 is inclined upwards, a floating garbage screening box 2 is arranged at the top of the stone collecting device 3, the slurry pump 4 is connected with a slurry discharge port 7 outwards, the slurry pump 4 is connected into a gap between the outer wall of the stone collecting device 3 at the bottom of the box body 1 and the inner wall of the box body 1 inwards, the bottom end of the stone collecting device 3 is connected with the bottom of the box body 1 and is connected with a stone discharge port 9, and a middle hole 201 is arranged on a connecting interface between the bottom of the floating garbage screening box 2 and the top of the stone collecting device 3.
In the foregoing, the stone collecting device 3 has a tapered tubular structure. The impurities with larger density of the stones in the slurry pipe 5 are thrown up and sprayed into the stone collecting device 3 together with the slurry through the slurry spraying port 12, and slide along the pipe wall of the stone collecting device 3 to be separated to the bottom of the stone collecting device 3.
In the foregoing, the unidirectional guide plate is installed in the passage at the connection part of the slurry pipe 5 and the slurry injection port 12.
In the foregoing, the central axis of the slurry injection port 12 passes upward through the middle of the middle hole 201. I.e. the mud jet 12 is slightly inclined, ensuring that stones can fall to the bottom along the right side runner without falling back into the mud jet 12.
In the foregoing, as shown in fig. 3, a cleaning door is disposed on an outer wall of one side of the floating garbage screening box 2, and a floating garbage discharge port 8 is installed on an outer wall of the box body 1 corresponding to the cleaning door, and a door body of the floating garbage discharge port 8 is hinged on the outer wall of the box body 1 through a push type lock catch 10 and a spring hinge 11. After the floating garbage is piled up to a certain height in the floating garbage screening box 2, the cover plate of the floating garbage discharge port 8 is opened after the push type lock catch 10 is pulled open, and the floating garbage screening box 2 is pulled out, so that the floating garbage can be recovered.
In the foregoing, as shown in fig. 4, the bottom of the stone discharging hole 9 is provided with a cover plate for sealing. The joint of the stone discharging hole 9 and the stone collecting device 3 is provided with another group of spring hinges 11 and a pressing type lock catch 10. When the curbstone blocks are piled up to a certain height above the stone discharge hole 9, the cover plate of the stone discharge hole 9 is pulled open by pressing, and the stones are directly poured at the bottom of the river.
In the foregoing, as shown in fig. 5, the bottom plate and the vertical wall of the floating garbage screening box 2 are provided with screen holes 202, the middle part of the bottom plate of the floating garbage screening box 2 is provided with a middle hole 201, a rubber opening 203 is arranged on the middle hole 201, elastic spoke-shaped centripetal filter plates are circumferentially distributed on the rubber opening 203, the centripetal filter plates are in a fan shape or a pointed cone shape, that is, radial gaps are arranged between adjacent filter plates, and all the radial gaps are communicated at the center part of the rubber opening 203. The handle 13 is arranged on the outer wall of the floating garbage screening box 2. After the floating garbage enters the floating garbage screening box 2 along with the slurry through the rubber port 203, the floating garbage cannot fall down, the slurry falls into the bottom of the box body 1 through the sieve holes 202, and the floating garbage is left in the floating garbage screening box 2.
In the foregoing, the joints of the slurry inlet 6 and the slurry outlet 7 are provided with flange pieces for butt joint with external slurry pipelines.
In the embodiment of the invention, the whole box body 1 is of a cuboid or cylindrical metal structure, the volume of the box body 1 is determined according to the hour treatment capacity and the power of the slurry pump 4, the height of the box body 1 is generally about 1.5m, at least one side surface is at least partially provided with an observation window, toughened glass is arranged on the observation window, the garbage accumulation condition in the box body 1 can be observed at any time, so that the box body 1 can be cleaned in time, and the vacuum sealing state of the box body 1 is always maintained in the dredging process. In order to ensure a sufficient head difference, the output pressure of the slurry pump 4 must be ensured to be above 0.1Mpa and the lift to be above 10m, considering the extracted mud and other garbage in the river channel. The diameter of the mud pipe 5 is about 200mm, and river garbage in the size range can be pumped to a river garbage screening device for further screening. The sieve plate is a rectangular steel plate, and a mud filtering channel is formed by punching on the surface.
In the embodiment of the invention, the slurry pump 4 must ensure enough power to be driven by an additional motor or a diesel engine, and mainly provides power for pumping the slurry. The diameter of the slurry pipe 5 is about 200mm, the discharge pressure of the slurry discharge hole 7 is irrelevant to the rotation speed of the slurry pump 4, the slurry pump 4 works together with a frequency converter, the high discharge pressure can be maintained even if the slurry pump 4 works in a low flow state, the slurry can be directly pumped without a bottom valve, and the slurry with high concentration and high viscosity less than 10000PaS and containing particles can be conveyed. The flow is in direct proportion to the rotating speed, and the flow regulation can be realized through a speed change mechanism or a speed regulating motor. And flange plates are arranged at joints of the mud feeding hole 6 and the mud discharging hole 7 and are used for being in butt joint with an external mud pipeline. And a rubber ring is arranged at the inner side of the floating garbage discharge hole 8, so that the tightness of the box body 1 is ensured. And a rubber ring is arranged at the inner side of the stone discharge hole 9, so that the tightness of the box body 1 is ensured.
In the embodiment of the invention, during operation, the mud pipe 5 and the water pipe are driven into the river bed through the dredging mechanical carrier, and after the mud pipe is diluted, the mud is pumped into the box body 1 through the mud pipe 5.
According to the embodiment of the invention, through a construction site test, the interception rate of stones and floating garbage reaches more than 90%, the situation of blockage of a pump opening is basically avoided, the situation of blockage of floating garbage in the floating garbage screening box 2 is occasionally avoided, a side cleaning door of the box body 1 is opened, and the handle 13 is operated to draw out the floating garbage screening box 2 for cleaning. The treatment capacity of the slurry reaches 300m 3 And the construction efficiency is greatly improved, the labor force is liberated, and the dredging mechanization of the middle and small river is realized.
The embodiments of the present invention are only used to assist the reader in understanding, and are not intended to limit the present invention in any way, and any modifications, equivalent changes and modifications made within the spirit and principles of the present invention, which are set forth by the reader according to the technical principles and essential characteristics of the present invention, may be included in the scope of the present invention without departing from the technical aspects of the present invention.
Claims (1)
1. A river dredging screening dredging method comprises the steps that a slurry pump is arranged on one side outside a box body, a slurry pipe is arranged on the lower portion of the other side outside the box body, a slurry inlet is formed in the outer end of the slurry pipe, the inner end of the slurry pipe is connected into a stone collecting device vertically arranged in the box body through a slurry jet orifice, the slurry jet orifice is inclined upwards, a floating garbage screening box is arranged at the top of the stone collecting device, the slurry pump is connected with a slurry discharge port outwards, the slurry pump is connected into a gap between the outer wall of the stone collecting device at the bottom of the box body and the inner wall of the box body inwards, the bottom of the stone collecting device is connected with the bottom of the box body and is connected with a stone discharge port, and a middle hole is formed in a connecting interface between the bottom of the floating garbage screening box and the top of the stone collecting device; the fluid channel in the equipment adopts a composite lifting structure, and under the negative pressure effect of the vacuum of the slurry pump, the pressure intensity at one side of the slurry discharge port is always obviously lower than that of the slurry feed port; the stone collecting device is of a cone-shaped tubular structure; a unidirectional guide plate is arranged in a passage at the connecting part of the mud pipe and the mud jet orifice; the central axis of the slurry jet orifice passes through the middle part of the middle hole upwards; the outer wall of one side of the floating garbage screening box is provided with a cleaning door, a floating garbage discharging hole is arranged on the outer wall of the box body corresponding to the cleaning door, and a door body of the floating garbage discharging hole is hinged on the outer wall of the box body through a push type lock catch and a spring hinge; the bottom of the stone discharge hole is provided with a cover plate for sealing; the joint of the stone discharging hole and the stone collecting device is provided with another group of spring hinges and a pressing type lock catch; the floating garbage screening box bottom plate and the vertical wall are provided with sieve holes, the middle part of the floating garbage screening box bottom plate is provided with a middle hole, a rubber port is arranged on the middle hole, an elastic spoke type centripetal filter plate is circumferentially distributed on the rubber port, the centripetal filter plate is in a fan shape or a pointed cone shape, namely radial gaps are arranged between adjacent filter plates, and all the radial gaps are communicated at the center part of the rubber port;
the method is characterized in that a mud filtering channel is formed by punching on the surface of a sieve plate; under the action of pressure difference, a slurry jet orifice is arranged in the stone collecting device, the trace of jet fluid is parabolic, sundries with larger density of stones fall and are separated to the bottom of the stone collecting device due to dead weight, slurry is wrapped by sundries with lower density of floating garbage, then the slurry is upwards flushed through a middle rubber orifice arranged on the connecting interface between the bottom of the floating garbage screening box and the top of the stone collecting device under the guidance of negative pressure, and the rubber orifice is automatically closed after the slurry pump stops working;
the output pressure of the slurry pump must be ensured to be more than 0.1Mpa, and the lift reaches more than 10 m; the diameter of the mud pipe is 200mm, and river garbage in the size range can be pumped to a river garbage screening device for further screening;
after the floating garbage enters the floating garbage screening box along with the slurry through the rubber port, the floating garbage cannot fall down, the slurry falls into the bottom of the box body through the sieve holes, and the floating garbage is left in the floating garbage screening box;
during operation, the mud pipe and the water pipe are penetrated into the river bed through the dredging mechanical carrier, and the mud is pumped into the box body through the mud pipe after the water pipe is diluted; when the curbstone blocks are piled up to a certain height on the stone discharge hole, the cover plate of the stone discharge hole is pulled open by pressing, and the stones are directly poured at the bottom of the river.
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| CN201910727579.4A CN110512674B (en) | 2019-08-07 | 2019-08-07 | River dredging screening dredging method and equipment |
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| CN201910727579.4A CN110512674B (en) | 2019-08-07 | 2019-08-07 | River dredging screening dredging method and equipment |
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| CN110512674B true CN110512674B (en) | 2024-04-12 |
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| CN110847275B (en) * | 2019-12-09 | 2023-05-26 | 上海市水利工程集团有限公司 | Continuous anti-blocking separation device and method for sludge and garbage dredged by medium and small river channels |
| CN111424750B (en) * | 2020-04-15 | 2022-11-01 | 杨美玲 | Port wharf side wall dredging and cleaning structure and construction method thereof |
| CN111574002A (en) * | 2020-04-20 | 2020-08-25 | 广州珞珈环境技术有限公司 | River and lake sludge screening method and system |
| CN112121528B (en) * | 2020-08-31 | 2021-10-22 | 山东省地矿工程勘察院 | Mud pit with mud purifies and classification function |
| CN113373999B (en) * | 2021-06-23 | 2023-01-03 | 中铁二局集团建筑有限公司 | Reinforced concrete pipe culvert dredging method |
| CN113373888A (en) * | 2021-06-28 | 2021-09-10 | 韩强 | Floated river course rubbish cleaning device for hydraulic engineering |
| CN114263235B (en) * | 2022-01-25 | 2023-05-19 | 中港疏浚有限公司 | Stone screening device for filtering dredger shore discharge sediment |
| CN114607000B (en) * | 2022-02-17 | 2024-03-01 | 怀化市康美悦信息科技有限公司 | Underwater dredging machine for water conservancy construction |
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