CN1283522C - Fast separation type dredger - Google Patents

Abstract

The present invention discloses a dredging water conservancy machine, particularly a fast separation type dredger. The fast separation type dredger comprises a ship hull, a sailing device and a dredging device; the fast separation type dredger is characterized in that the fast separation type dredger is also provided with a fast separation device III; a dredging device II and the fast separation device III both are arranged on the ship hull 60 dragged by the sailing device I; the fast separation device III comprises a deposition part 301 and a centrifugal separation part 302, and the dredging device II is connected with the deposition part 301; the deposition part 301 is connected with the centrifugal separation part 302, and the bottom of the deposition part 301 and a discharge hopper of the centrifugal separation part 302 both are respectively provided with a deslagging mechanism 303. The present invention can directly dehydrate mud dredged from a river bed and change the mud into stackable sludge via the fast separation device on the dredger, most of water contained in the mud flows into a river, and the problems of long distance wattless convey, large occupation land of mud storage, the need of damming construction, etc. are effectively solved.

Description

Speed fraction dredger

Technical field

The present invention relates to a kind of dredging water conservancy machinery, the particularly a kind of fast fraction dredger that directly just can carry out quick separation aboard ship to the mud of being excavated.

Background technology

Chinese patent discloses for No. 90202699.2 a kind of " strand suction formula desilting dredger ", it comprises hull, by mud pump, stir the strand that trowel, mudwing and dredging tube form and inhale mechanism and transmission device, its constructional feature is to stir trowel before mud pump, and is provided with manger in the back side of stirring trowel.This structure dredger blends clod by stirring trowel, and mud pump twists suction mud under water, is sent on the special-purpose mud carrier by dredging tube again, is transported to elsewhere then and dumps.There is following defective in this technology: 1, because depositing the place of mud must be the low country of no ponding, then take tract, if be selected in the col, that just must be built a dam, and expends a large amount of human and material resources, and is of a high price.Even there is the place to deposit, often do not do contaminated environment for a long time.2, dredging and desilting often at the harbour, densely populated area such as manufacturing district, business district, scenic spot, the mud that dredging is come out is not deposited at all with having and is digested, and the mud overwhelming majority that dredging is come out is a water, even designed manger, mud still only accounts for per centum, its remote merit of being done of carrying, majority is that idle work, waste are serious.

Summary of the invention

Technical matters to be solved by this invention is, a kind of fast fraction dredger is provided, it can be directly on dredger dividing the body refuse that can bank up of device dehydration becoming by the default speed of ship from digging the mud of adopting up under water, and the most current that have in the mud go back to Ha Noi, can solve remote idle conveying effectively, mud is deposited and is taken up an area of big, problem such as need build a dam.

The present invention addresses the above problem the technical scheme that is adopted: this speed fraction dredger, comprise hull, the device of navigating, sludger, its constructional feature is: also be provided with speed and divide device, sludger and speed divide device to be installed on the hull that the device of navigating drags, speed divides device to include precipitation partial sum centrifugalization part, sludger links to each other with the precipitation part, and the precipitation part partly links to each other with centrifugalization, and the discharge bucket of the bottom of precipitation part and centrifugalization part all has slagging device.The speed that is provided with on the dredger is divided device, can solve the dredging desilting and dig the mud that contains big water gaging that extraction comes separating and dehydrating fast on the spot, and water directly returns the technical matters in Ha Noi, thereby for the transhipment of dehydration back mud, deposit, handle and provide convenience.

Precipitation part of the present invention is made up of the carefully heavy part of thick heavy partial sum of mutual linking, and thick heavy part is contained in before the thin heavy part, and thick heavy part is connected with sludger, and thin heavy part partly is connected with centrifugalization.Precipitation is a kind of economy, actv. dewatering type, and it is rational that the precipitation part is divided the design of the first road treatment facility of device as speed.

Centrifugalization of the present invention partly is two horizontal screw centrifuges, and they are settled above deck side by side, and thin heavy part is connected with horizontal screw centrifuge, the direct water flowing face of the coolant outlet pipe of horizontal screw centrifuge, and slagging device is loaded on the discharge bucket of horizontal screw centrifuge.Horizontal screw centrifuge can be forced apart from the thin heavy suspending fluid of partly sending into, and makes its fast dewatering.

Slagging device of the present invention promotes slag extractor by spiral slag extractor and chain bucket and constitutes, described the 1st spiral slag extractor crosses the bottom of thick heavy part, promoting slag extractor with the 1st chain of stations bucket is connected mutually, straight-through chain bucket promotes the feed bin of slag extractor, described the 2nd spiral slag extractor crosses the bottom of thin heavy part, straight-through the 2nd chain of stations bucket promotes the feed bin of slag extractor, promoting slag extractor with the 2nd chain of stations bucket is connected mutually, described the 3rd spiral slag extractor crosses the discharge bucket of two horizontal screw centrifuges, the straight-through hull outside.Slagging device adopts the spiral slag extractor to solve thick heavy pond, heavy pond carefully, the body refuse of horizontal screw centrifuge is discharged technical matters, particularly in thick heavy pond and thin heavy pond, because spiral slag extractor and awl bottom portion good combination, be subjected to body refuse to be blocked in deslagging and can prevent effectively that clear liquid and suspending fluid from penetrating sediment and spilling simultaneously, and this kind slag extractor is easy to operate.

Thick sinking of the present invention partly contained thin mud pipe and the spiral slag extractor that two thick heavy ponds, bands are failed the drain pipe of the mud conveying pipeline of slurry valve door, liquidometer, band valve, are with valve, put on hull in two tapered thick heavy ponds row side by side, the mud conveying pipeline of the defeated slurry valve door of band links to each other sludger with thick heavy pond, two liquidometers are loaded on the top in two thick heavy ponds respectively, the drain pipe of band valve is contained in respectively on the pool wall of liquidometer below, the thin mud pipe of band valve is contained in respectively on the middle wall in thick heavy pond, and the spiral slag extractor crosses the awl bottom portion in two thick heavy ponds.The design in two thick heavy ponds makes the precipitation process of the aqueous slurry that the dredging process carries out simultaneously, and required sedimentation time is guaranteed, can excavate synchronously with mud again, has improved efficient.

Thin heavy part of the present invention contains tapered thin heavy pond, liquidometer, thin discharging valve, mud in suspension pump and spiral slag extractor, thin heavy pond communicates with two thick heavy ponds respectively by the thin mud pipe of band valve, liquidometer is loaded on thin heavy top, pond, thin discharging valve is loaded on the pool wall of liquidometer below, the mud in suspension pump is loaded on the middle part in thin heavy pond and is connected mutually with horizontal screw centrifuge, and the spiral slag extractor crosses the awl bottom portion in thin heavy pond.The thick back, pond that sinks has disposed thin heavy pond again, further utilizes the mud deadweight to sink to dewatering, and reduces the work capacity of back centrifugalization part.

Sludger of the present invention adopts strand to inhale device, strand is inhaled device and is contained hoist frame, winch, twisting sucker head, mud pump and Hydraulic Station, twisting sucker head comprises hard suction, soft suction pipe, fluid power reamer head and high pressure rubber hose, fluid power reamer head is contained in the lower end inwall of hard suction, the oil inlet of the delivery port one straight-through feed liquor power reamer head of the Hydraulic Station of rubber high pressure hose from the deck, be fixed on the hanger of hard suction top from the cylinder of winch and the steel rope that passes the assembly pulley of hoist frame, soft suction pipe one end is connected with hard suction, the other end and mud pump inlet connect joins, the mud conveying pipeline of the defeated slurry valve door of the exit end tape splicing of mud pump.This kind strand is inhaled device in dredging desilting process, and fluid power reamer head chopping clod makes it form mud, excavates effective.

The device of navigating of the present invention comprises steering wheel, tow strap, draw ring, rack winch, traction rope hook, anchoring pile, hoist frame, hangs a winch, steering wheel is loaded in the middle of the afterbody on deck, two anchoring piles, centre portions are fixed with the afterbody and arranged on left and right sides that the hoist frame that hangs a winch is loaded on the deck respectively, hanging a winch is connected with anchoring pile respectively, two rack winches that are connected with the traction rope hook respectively are positioned at the anterior and arranged on left and right sides in deck, and the tow strap that links to each other with tractor tug tangles respectively on the draw ring that is fixed on hull front and arranged on left and right sides.This has navigated device solves dredger two kinds of needs of navigating promptly from the mooring point to the place of working or long-range transfer work-yard, need be navigated at a high speed, and inhaling fast branch state in strand needs step wise to navigate.By tractor tug by tow strap and be contained in draw ring on the dredger and finish dredger and navigate at a high speed.Navigate by the step wise that the left and right windlass device of left and right rack winch device of front deck and rear deck is finished dredger.

On the deck of hull of the present invention control setup is set, control setup contains master control room and branch's control cabin, device, sludger and the speed of navigating divides device motor and electrical equipment all to network with control setup, and the system controlled by computer and the read-out of controlled device are monitored in real time.This control setup to wholely dredge, speed divides comprehensive real-time monitoring, trouble-shooting and correct bungle guarantees the dredger normal operation at any time.

Dispose diesel powerplant on the deck of hull of the present invention.Guarantee the supply regular power of dredger with this.

The present invention compared with prior art, have the following advantages: 1, be provided with speed on the dredger of the present invention and divide device, speed divides device to adopt the method for natural subsidence and centrifugalization combination, make the separating and dehydrating of slime water quick, economical, avoid a large amount of remote idle transportations of water, can greatly reduce dredging desilting engineering cost, improve engineering efficient.In addition, can be carried out the actv. post-processed, turn waste into wealth, such as backfill nearby, do greening, or be processed into fertilizer or the like, can realize comprehensive utilization of resources by the body refuse told.Also avoided a large amount of low-lying soils occupied, or the high expense of the storage mud of building a dam in the col.Also solve the long-term environmental pollution that is caused of not doing of mud simultaneously, helped the comprehensive regulation of environment.2, it is reasonable in design that the present invention twists the suction device, inhales behind the clod of chopping earlier again and dig, and guaranteed dredging desilting high efficiency.3, slagging device of the present invention adopts the spiral slag extractor, and residue-discharge convenience can prevent that clear liquid and suspending fluid from spilling, and improved disintegrate-quality simultaneously.4, the present invention disposes control setup and self-generating device, has effectively guaranteed the normal operation of dredger.

Description of drawings

Fig. 1 is a front elevational schematic of the present invention.

Fig. 2 is vertical cross-sectional schematic of the present invention.

Fig. 3 is the A-A cutaway view of Fig. 1.

Fig. 4 is the B-B cutaway view of Fig. 1.

Fig. 5 is the C-C cutaway view of Fig. 1.

Fig. 6 is a controlling party block diagram of the present invention.

The specific embodiment

Embodiment is referring to Fig. 1-Fig. 6.Speed fraction dredger comprises hull 60, the device I that navigates, sludger II, speed are divided device III.Sludger II and speed divide device III to be installed on the hull 60 that the device I that navigates drags, speed divides device III to include precipitation part 301 and centrifugalization part 302, sludger H links to each other with precipitation part 301, precipitation part 301 links to each other with centrifugalization part 302, and the bottom of precipitation part 301 and the discharge bucket of centrifugalization part 302 all have slagging device 303.

Embodiment navigate device I mainly by steering wheel 11, tow strap 12 and 42, draw ring 34 and 44, tractor tug, rack winch 35 and 36, traction rope hook 56 and 57, anchoring pile 37 and 38, hoist frame 58 and 59, hang a winch 6 and 32 and form.Constitute the high-speed row boat equipment by steering wheel 11, tow strap 12 and 42, draw ring 34 and 44, tractor tug.By rack winch 35 and 36, traction rope hook 56 and 57, anchoring pile 37 and 38, hoist frame 58 and 59, hang a winch 6 and 32 and constitute when excavating the step wise device of navigating.Steering wheel 11 is loaded in the middle of the afterbody on deck 40, anchoring pile 37 and 38, centre portion are fixed with the afterbody and arranged on left and right sides that the hoist frame 58 and 59 that hangs a winch 6 and 32 is loaded on deck 40 respectively, hanging a winch 6 is connected with 38 with anchoring pile 37 respectively with 32, the rack winch 35 and 36 that is connected with traction rope hook 56 and 57 respectively is positioned at deck 40 anterior and arranged on left and right sides, and the tow strap 12 and 42 that links to each other with tractor tug tangles respectively on the draw ring 34 and 44 that is fixed on hull 60 front and arranged on left and right sides.

The sludger II of embodiment adopts strand to inhale device, and it mainly is made up of hoist frame 53, winch 39, twisting sucker head 1, mud pump 2 and Hydraulic Station 54.Twisting sucker head 1 is made of hard suction 50, soft suction pipe 52, fluid power reamer head 48 and high pressure rubber hose 49.Fluid power reamer head 48 is contained in the lower end inwall of hard suction 50, the oil inlet of the delivery port one straight-through feed liquor power reamer head 48 of the Hydraulic Station 54 of rubber high pressure hose 49 from the deck 40, on the hanger 55 of hard suction 50 tops, fixing from winch 39 cylinder and pass the steel rope of the assembly pulley 51 of hoist frame 53, soft suction pipe 52 1 ends are connected with hard suction 50, the import of the other end and mud pump 2 connects and joins, defeated slurry valve door 5 of the exit end tape splicing of mud pump 2 and 31 mud conveying pipeline 3.Soft suction pipe 52 and high pressure rubber hose 49 all are made with high tensile steel wire network folder durable rubber, can adapt to the upper and lower swing and the flexible needs of twisting sucker head 1.

The speed of embodiment divides device III to form by precipitating part 301 and centrifugalization part 302, is made of the thick heavy part 304 of corresponding linking and the part 305 of carefully sinking and precipitate part 301.Thick heavy part 304 is contained in before the thin heavy part 305, and slightly heavy part 304 is connected with sludger II, and carefully heavy part 305 is connected with centrifugalization part 302.

Described thick heavy part 304 comprises mud conveying pipeline 3, the liquidometer 9 and 27 of thick heavy pond 7,28, the defeated slurry valve door 5 of band and 31, the drain pipe 8 and 29 of band valve, the thin mud pipe 13 of band valve and 26 and promote the slagging device 303 that slag extractor 30 is formed by spiral slag extractor 10, chain bucket.Put on hull 60 in tapered thick heavy pond 7 and thick heavy pond 28 row side by side, and spiral slag extractor 10 crosses the awl bottom portion of thick heavy pond 7 and 28, and the feed bin 47 of straight-through chain bucket deslagging gig 30 promotes slag extractor 30 with chain bucket and is connected mutually.The defeated slurry valve door 5 of band and 31 mud conveying pipeline 3 are with sludger II and slightly sink pond 7,28 and link to each other, liquidometer 9 and 27 is loaded on thick heavy pond 7 and 28 tops respectively, the drain pipe 8 and 29 of band valve is contained in respectively on the pool wall of liquidometer 9 and 27 belows, and the thin mud pipe 13 and 26 of band valve is contained in respectively on the middle wall of thick heavy pond 7 and 28.

Described thin heavy part 305 is by tapered thin heavy pond 16, liquidometer 14, thin discharging valve 25, mud in suspension pump 17 and 23 and promote the slagging device 303 that slag extractor 24 constitutes by spiral slag extractor 15, chain bucket and form.Spiral slag extractor 15 crosses thin heavy pond 16 and bores bottom portions, and straight-through chain bucket promotes the feed bin 41 of slag extractor 24, promotes slag extractor 24 with chain bucket and is connected mutually.Thin heavy pond 16 communicates with thick heavy pond 7 and 28 respectively by the thin mud pipe 13 and 26 of band valve, liquidometer 14 is loaded on thin heavy 16 tops, pond, thin discharging valve 25 is loaded on the pool wall of liquidometer 14 belows in the thin heavy pond 16, and mud in suspension pump 17 and 23 is loaded on the middle part in thin heavy pond 16 and is connected to centrifugalization part 302.

Described centrifuge mechanism 302 is made up of horizontal screw centrifuge 20 and 21, spiral slag extractor 19, coolant outlet pipe 18 etc.Horizontal screw centrifuge 20, horizontal screw centrifuge 21 are settled on deck 40 side by side, spiral slag extractor 19 crosses the discharge bucket of horizontal screw centrifuge 20 and 21, the transhipment hopper 45 of the barge 46 that berths in the straight-through dredger outside, mud in suspension pump 17 and 23 the outlet of sinking in the thin heavy pond 16 are connected with 21 import with horizontal screw centrifuge 20 respectively, and the coolant outlet pipe 18 on the horizontal screw centrifuge 20 and 21 directly feeds the water surface.

The control setup IV of embodiment is by master control room 4 and divide control cabin 22 to form.Device I, sludger II and the speed of navigating divides the motor of device III and electrical equipment all to network with control setup IV, and system controlled by computer and the read-out of controlled device IV are controlled in real time.Mode adopts microcomputer automatic control to combine with indivedual crawl controls, especially when individual links breaks down, will be replenished with indivedual crawls.

The propulsion source of embodiment has two covers, i.e. self power generation and the power supply of input electrical network power line.One cover adopts the power supply of electrical motor, electromagnetic valve and the electrical equipment of diesel powerplant 33 each device of supply.Another set ofly import line, switch box and cable winch etc. with power and solve power supply.

The fluid power reamer head 48 that embodiment adopts can also be replaced with electric power reamer head.In the dredging desilting, run into scum silica frost more for a long time,, also need slag scraping mechanism to be set, remove bigger scum silica frost in advance at the top in thick heavy pond 7,28 except that by the filter screen removing dross of twisting sucker head 1.

It is as follows that speed fraction dredging machine is dredged the desilting operation in real time:

When dredger needs the high-speed row ship time, then enable tractor tug, by tow strap 12 and 42, suspension ring 34 and 44, again by steering wheel 11 close fit.Implement when excavating when dredger, excavation and the collection of a large amount of mud faces for dredger twisting sucker head 1 must be arranged, new face is to navigate and the upper and lower motion of twisting sucker head 1 is obtained by step wise.At first will draw rope hook 57 to front deck is sleeved on the place ahead pile foundation that adapts with it, put down an anchoring pile 37 of rear deck simultaneously, restart rack winch 35,36, hull 60 is slowly rotated around anchoring pile 37, to adapt to the needs of sludger II new face.When after hull 60 forwards end position to, needing backward rotation, promptly start and hang a winch 32, put down anchoring pile 38, pull up anchoring pile 37, simultaneously front deck traction rope hook 56 is enclosed within on the place ahead pile foundation that adapts with it front deck rack winch 35,36 do the transposition traction, thereby hull 60 is rotated around anchoring pile 38, and then speed divides dredger to do backswing, forms the step wise of the excavating ship rule mark of navigating.

When dredger was started working, master control room 4 started sludger II, and winch 39, twisting sucker head 1, Hydraulic Station 54 start in succession, the instruction that twisting sucker head 1 is pressed control cabin 4 is spurred by the steel rope of winch 39, rise or descend, enter control position, 48 rotations of fluid power reamer head, the chopping clod, stir into mud, be subjected to the suction of mud pump 2, mud through hard suction 50, soft suction pipe 52, enter mud pump 2, when defeated slurry valve 5 open, when defeated slurry valve 31 is closed, mud is pressed to thick heavy pond 7 No. 1.When mud fills with certain position, liquidometer 9 will send signal, and Master Control Room 4 instruction unpacks are failed slurry valve 31, closed defeated slurry valve 5, and at this moment, mud is imported thick heavy pond 28 at once.The mud in thick heavy pond 7 will precipitate automatically, and be divided into three layers of clear liquid and scum silica frost, suspension slurry, sediments rapidly, and when clear liquid reached certain depth, the drain pipe 8 of band valve will be opened, and clear liquid and scum silica frost begin Vent stream.Suspend slurry by being with the thin mud pipe 13 of valve, enter thin heavy pond 16 and carry out natural sedimentation once again, the sediment of awl bottom portion progressively deposits.Open spiral slag extractor 10 when sediment deposits to certain thickness, sediment is discharged continuously, enters the feed bin 47 that chain bucket promotes slag extractor 30, and chain bucket promotes slag extractor 30 and promotes discharge continuously then, by discharge hopper 43, enters the transhipment hopper 45 in the barge 46.

Fill up mud when thick heavy pond 28, liquidometer 27 sends signal, promptly closes defeated slurry valve 31, and reopens defeated slurry valve 5, and mud will re-enter thick heavy pond 7.The separation process of thick heavy pond 7 natural sedimentations is repeated in then slightly heavy pond 28.

By the defeated by turns slurry and the precipitate and separate in two thick heavy ponds 7,28, thereby the mud that guarantees the thin heavy pond 16 of input does not contain big particle and scum silica frost.16 operations of thin heavy pond with thick heavy pond 7 and 28, will be sent into horizontal screw centrifuge 20 and 21 by the predetermined instruction of master control room 4 by mud in suspension pump 17 and 23 through the middle level suspending fluid in the thin heavy pond 16 that produces after the precipitate and separate and carry out forced apart.Pass through coolant outlet pipe 18 direct Vent upstream faces through horizontal screw centrifuge 20 and 21 forced apart clear liquids.And the body refuse after the dehydration is with crossing the transhipment hopper 45 that spiral slag extractor 19 in two horizontal screw centrifuges 20 and the 21 bottom discharge grooves directly escapes and enter the barge 46 in 40 outsides, deck.

Its implication of the present invention's said " speed is divided " is: separate fast.

Claims (10)

1, a kind of fast fraction dredger, comprise hull, the device of navigating, sludger, it is characterized in that: also be provided with speed and divide device (III), sludger (II) and speed divide device (III) to be installed on the hull (60) that the device of navigating (I) drags, speed divides device (III) to include precipitation part (301) and centrifugalization part (302), sludger (II) links to each other with precipitation part (301), precipitation part (301) links to each other with centrifugalization part (302), and the discharge bucket of the bottom of precipitation part (301) and centrifugalization part (302) all has slagging device (303).

2, fast fraction dredger according to claim 1, it is characterized in that: described precipitation part (301) is made up of the thick heavy part (304) and the thin heavy part (305) of mutual linking, thick heavy part (304) is contained in thin heavy part (305) before, thick heavy part (304) is connected with sludger (II), and thin heavy part (305) is connected with centrifugalization part (302).

3, fast fraction dredger according to claim 1 and 2, it is characterized in that: described centrifugalization part (302) is two horizontal screw centrifuges (20,21), they are placed on the deck (40) side by side, thin heavy part (305) is connected mutually with the import of horizontal screw centrifuge (20,21), the coolant outlet pipe (18) of horizontal screw centrifuge (20,21) is water flowing face directly, and slagging device (303) is loaded on the discharge bucket of horizontal screw centrifuge (20,21).

4, fast fraction dredger according to claim 3, it is characterized in that: described slagging device (303) is by spiral slag extractor (10,15,19) and chain bucket promote slag extractor (30,24) constitute, described spiral slag extractor (10) crosses the bottom of thick heavy part (304), promoting slag extractor (30) with chain bucket is connected mutually, straight-through chain bucket promotes the feed bin (47) of slag extractor (30), described spiral slag extractor (15) crosses thin heavy part (305) bottom, straight-through chain bucket promotes the feed bin (41) of slag extractor (24), promoting slag extractor (24) with chain bucket is connected mutually, described spiral slag extractor (19) crosses horizontal screw centrifuge (20,21) discharge bucket, straight-through hull (60) outside.

5, fast fraction dredger according to claim 2, it is characterized in that: described thick heavy part (304) contains thick heavy pond (7,28), the defeated slurry valve door (5 of band, 31) mud conveying pipeline (3), liquidometer (9,27), the drain pipe (8 of band valve, 29), the thin mud pipe (13 of band valve, 26) and spiral slag extractor (10), tapered thick heavy pond (7,28) row puts on hull (60) side by side, the defeated slurry valve door (5 of band, 31) mud conveying pipeline (3) is with sludger (II) and thick heavy pond (7,28) link to each other, liquidometer (9,27) be loaded on thick heavy pond (7 respectively, 28) top, the drain pipe (8 of band valve, 29) be contained in liquidometer (9 respectively, 27) on Xia Fang the pool wall, the thin mud pipe (13 of band valve, 26) be contained in thick heavy pond (7 respectively, 28) on the middle wall, spiral slag extractor (10) crosses thick heavy pond (7,28) awl bottom portion.

6, fast fraction dredger according to claim 2, it is characterized in that: described thin heavy part (305) contains tapered thin heavy pond (16), liquidometer (14), thin discharging valve (25), mud in suspension pump (17), (23) and spiral slag extractor (15), thin heavy pond (16) is by the thin mud pipe (13 of band valve, 26) respectively with thick heavy pond (7,28) communicate, liquidometer (14) is loaded on thin heavy top, pond (16), thin discharging valve (25) is loaded on the pool wall of liquidometer (14) below, mud in suspension pump (17,23) be loaded on thin heavy pond (16) the middle part and with horizontal screw centrifuge (20,21) be connected, spiral slag extractor (15) crosses the awl bottom portion in thin heavy pond (16).

7, fast fraction dredger according to claim 1, it is characterized in that: described sludger (II) adopts strand to inhale device, strand is inhaled device and is contained elevator boom rack (53), winch (39), twisting sucker head (1), mud pump (2) and Hydraulic Station (54), twisting sucker head (1) comprises hard suction (50), soft suction pipe (52), fluid power reamer head (48) and high pressure rubber hose (49), fluid power reamer head (48) is contained in the lower end inwall of hard suction (50), the oil inlet of the delivery port one straight-through feed liquor power reamer head (48) of the Hydraulic Station (54) of rubber high pressure hose (49) on deck (40), be fixed on the hanger (55) of hard suction (50) top from the cylinder of winch (39) and the steel rope that passes the assembly pulley (51) of lifting ledge (53), soft suction pipe (52) one ends are connected with hard suction (50), the import of the other end and mud pump (2) connects joins, and the exit end tape splicing of mud pump (2) is failed slurry valve door (5,31) mud conveying pipeline (3).

8, fast fraction dredger according to claim 1, it is characterized in that: the described device of navigating (I) comprises steering wheel (11), tow strap (12,42), draw ring (34,44), rack winch (35,36), traction rope hook (56,57), anchoring pile (37,38), hoist frame (58,59), hang a winch (6,32), steering wheel (11) is loaded in the middle of the afterbody of deck (40), anchoring pile (37,38), centre portion is fixed with and hangs a winch (6,32) hoist frame (58,59) be loaded on the afterbody left side on deck (40) respectively, right both sides, hang a winch (6,32) respectively with anchoring pile (37,38) be connected, be connected with traction rope hook (56 respectively, 57) rack winch (35,36) be positioned at an anterior left side, deck (40), right both sides, the tow strap (12 that links to each other with tractor tug, 42) tangle respectively in being fixed on hull (a 60) left side, front, the draw ring (34 of right both sides, 44) on.

9, fast fraction dredger according to claim 1, it is characterized in that: on the deck (40) of described hull (60) control setup (IV) is set, control setup (IV) comprises master control room (4) and branch's control cabin (22), device (I), sludger (II) and the speed of navigating divides the motor of device (III) and electrical equipment all to network with control setup (IV), and the system controlled by computer and the read-out of controlled device (IV) are monitored in real time.

10, fast fraction dredger according to claim 8 is characterized in that: dispose diesel powerplant (33) on the deck (40) of described hull (60).

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