CN109467301A - A kind of continuous high-efficient shield slurry dewatering system - Google Patents
A kind of continuous high-efficient shield slurry dewatering system Download PDFInfo
- Publication number
- CN109467301A CN109467301A CN201910003232.5A CN201910003232A CN109467301A CN 109467301 A CN109467301 A CN 109467301A CN 201910003232 A CN201910003232 A CN 201910003232A CN 109467301 A CN109467301 A CN 109467301A
- Authority
- CN
- China
- Prior art keywords
- filter
- mud
- strainer
- nozzle
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of shield slurry dewatering systems of continuous high-efficient, it is vortexed to be dehydrated and be composed by first order rolling dehydration and second level hot gas.The flocculant effect that the present invention uses is more preferable, and the trapezoidal cross-section filter item of use is significantly reduced filtration resistance, and the self-loopa tail gas of use blows off filter cloth, eliminates filter cloth washing step；Second level hot gas of the present invention, which is vortexed, to be dehydrated, and using special scroll plate, filter mud directly with low-heat airflow vortex heat and mass, realizes quick solid-liquor separation, is sent to after tail gas is pressurized and is blown off filter cloth use.Compared with belt filter press, while the present invention saves kinetic energy, reduces operating cost, the increasing of dewatering system ability can be made to be twice above, dry 40% or less the mud powder moisture content of discharge.The present invention is used suitable for shield depth slurry dewatering system.
Description
Technical field
The present invention relates to a kind of shield slurry dewatering systems, more specifically to a kind of shield slurry of continuous high-efficient
Dewatering system.
Background technique
Currently, carrying out the excavation construction of subterranean tunnel increasingly with shield method as Urbanization in China constantly accelerates
Extensively, shield, the actually abbreviation of shield machine, it is a kind of machinery of bored tunnel, it has safety, higher engineering
The advantages such as quality, short time limit, at low cost, are rapidly developed in recent years, occupy dominant position in current constructing tunnel；
China's shield development and application make much progress, and 15.4 meters of shield diameter the biggest in the world at present, be exactly the product that China independently manufactures.It is existing
Most commonly used is " slurry-water balance type shield machine ", its technical controlling mainly has: excavation face is stable, muddy water concentration
Control, Slurry treatment equipment operation, spoir etc.；Excavation face is stablized, and refers mainly to shield in tunneling process, needs to carry out new and old mud
Slurry alternately adds to shield cutter face, form certain thickness mud film, be convenient for knife cutting, the supplemental amount of new and old mud, according to
It is adjusted according to the index being previously set, to guarantee that shield goes on smoothly construction operation；The control of muddy water concentration, is primarily referred to as shield
The dregs excavated in storehouse is mixed with mud in tunneling process, is transported to the mud-water separation station outside hole by slurry pump by machine, through dividing
Pond is adjusted from the rear mud that enters, after carrying out the adjustment of muddy water character, by sending dredge pump to send mud again to repeating in the excavation storehouse of shield
It uses；Slurry treatment equipment operation refers mainly to the water and soil separation process of shield discharge muddy water, is referred to as mud-water separation；Muddy water point
From first time processing equipment, for separating 0.074 millimeter or more bulky grain, generally by vibrating screen, cyclone, precipitation tank, tune
The compositions such as whole slot, remaining slot；Second of processing equipment of mud-water separation, for separating 0.074 millimeter of little particle below, it is wrapped
The compositions such as silt, clay, colloid are included, the state that they are electrochemically combined mostly, since particle is small, sinking speed is slow, one
As need to add flocculant, form it into biggish granule, then forced dehydration, carry out solid-liquor separation；Currently, 0.074 milli of separation
Meter or less short grained mud and water separating equipment it is undesirable, be now described below: 1, cylinder type be granulated dehydration device, such as hydraulic drum
Machine, its dehydrating effect is poor, 65 % or more of filter mud moisture content；2, dewatering conveyer, such as straining machine, dehydrating effect is also poor, filter
65 % or more of mud moisture content；3, belt pressure dewatering machine, it is the dewaterer of idler wheel, crawler belt pressurization filter cloth, though can continuously it make
Industry, but dehydration efficiency is not also high, 60 % or more of filter mud moisture content；4, centrifuge, it is taken off using high-speed rotating centrifugal force
Water, energy consumption is high, and filter mud moisture content is still greater than 55 %；5, belt filter press, it utilizes mud hydraulic pressure, makes its dehydration through filter cloth, it
Can be enlarged, but dehydration rate is still undesirable, and filter mud moisture content still has 55 % or so；In conclusion the two of current mud-water separation
Secondary processing equipment that is to say slurry dewatering equipment, there is that energy consumption is larger, the unsatisfactory state of dehydrating effect；Currently,
The muddy water of large shield discharge reaches 1500 cubes ms/h, and the ability of maximum Slurry treatment equipment be only 500 cubic metres/
Hour, need 3 sets of Slurry treatment equipment matched；Moreover, the application range of shield is also just more and more extensive, such as iron
Road, subway, highway, water conservancy, sightseeing, municipal administration, combustion gas etc. all be unable to do without its contribution；As a whole, the dehydration of shield slurry
Equipment can't adapt to the mating of shield machine, or weaker link, therefore, how improve the dehydration effect of shield slurry
Fruit, how to make dewaterer more enlarged, efficiently, energy conservation, be that shield machine is further perfect, further develop the research that faces and open
The important topic of hair.
Summary of the invention
The present invention is intended to provide a kind of shield slurry dewatering system of continuous high-efficient, it is by first order rolling dehydration and second
Grade hot gas is vortexed to be dehydrated and be composed；First order rolling of the present invention is dehydrated similar belt filter press, different from belt filter press
Be: the present invention adds sodium peroxide to make flocculant using manganese carbonate, and effect is more preferable；The present invention uses the filter item of trapezoidal cross-section, can show
It writes and reduces filtration resistance；The present invention blows off filter cloth using self-loopa tail gas, saves filter cloth washing step；Second level hot gas of the present invention
Be vortexed dehydration, and using special scroll plate, filter mud directly with low-heat airflow vortex heat and mass, realizes quick solid-liquor separation, through revolving
It flows device and dry mud powder is discharged, sent to after tail gas is pressurized and blow off filter cloth use.Compared with belt filter press, the present invention can make to be dehydrated energy
Power increasing is twice, and saves washing step, dry 40 % or less of mud powder moisture content of discharge.
In order to achieve the above object, present invention employs the following technical solutions:
(1) first order rolling dehydration.Principle is approximate with belt filter press, and compared with belt filter press, the present invention makes three aspects
Great innovation: first is that the present invention adds sodium peroxide to make flocculant using manganese carbonate, flocculation is significantly increased, and effect is more preferable；Two
It is the filter item that the present invention uses trapezoidal cross-section, so that the strainer for knitting out is formed trapezoidal hole, the positive face of strainer is small, the back of strainer
Face is big, and front is contacted with filter mud when use, that is to say that water flows to macropore from aperture and comes out, significantly reduces filtration resistance, saves
Save kinetic energy；Third is that the present invention blows off filter cloth using self-loopa tail gas, the washing step of belt filter press is eliminated, also eliminates and washes
Water reclamation system not only simplifies equipment, and saves kinetic energy.
(2) second level hot gas, which is vortexed, is dehydrated.The filter mud for being dehydrated out is rolled by the first order, then is vortexed through second level hot gas
Dehydration；The present invention generates 60 DEG C of hot-air using air energy heat pump, pressurizes through centrifugal blower, this hot-air is directly mixed with filter mud
Close, into vortex turbulence device, under the effect of special scroll plate, gas-solid is mutually vortexed flash heat transfer mass transfer, the moisture content of mud powder quickly into
Enter in air-flow, realize solid-liquor separation, then send out dry mud powder through cyclone, this dry mud powder moisture content 40% is hereinafter, cyclone is discharged
Tail gas after centrifugal blower pressurizes, send to the first order rolling dehydration procedure, as blow off filter cloth use.
A kind of continuous high-efficient shield slurry dewatering system of the present invention, including first order rolling dehydration, second level hot gas are vortexed
Dehydration.Its specific manufacturing process are as follows:
1, first order rolling dehydration.It is on the basis of belt filter press, and the present invention makes the great innovation of three aspects:
First aspect innovation, which is that present invention original creation manganese carbonate is mixed with sodium peroxide, makees flocculant, and flocculation of sludge effect is significant to be increased
By force, make mixing tank (3) with the room temperature with stirring, non-pressure vessel, it is desirable that start work under the conditions of blender always, on one side in tank
The mud (1) that need to be handled is added, 0.025~0.050 %(mud weight ratio is added into mud (1) on one side, the same below) carbon
Sour manganese powder is last (making flocculant), while also needing 0.012~0.022 % sodium peroxide powder (making auxiliary agent) of addition, this operation is
Stir mixing continuous operations under room temperature, normal pressure, it is agitated after by mixing tank (3) control discharging flow, mud i.e. through overmulling
Flocculation outflow in batch can (3).
Second aspect innovation is the filter item (33) that the present invention uses trapezoidal cross-section, this filter item (33) stainless steel material,
In trapezoidal cross-section Fig. 4, long side M takes M=1.4~3.6 millimeter, and short side N takes N=0.7~1.8 millimeter, it is desirable that M
=2 N, trapezoidal a height of P, P=0.6~1.5 millimeter；Filter the length H of item (33) and of same size, filter item (33) use of strainer
Stainless steel steel wire (34) close weave forms, and the line footpath of stainless steel steel wire (33) is to choose in 1.6 millimeters of 0.4~Ф of Ф, compiles
When knitting, stainless steel steel wire (33) is mutually next to braiding, and as shown in Figures 2 and 3, strainer total length C should be wanted according to whole equipment
It asks, in-site measurement determines, outer strainer (29) and interior strainer (11) of the invention uses the strainer of same size, and only total length has
Institute is different；Strainer of the invention, positive face is small, and voidage is small, this face is contacted with filter mud, and strainer back side hole is big, and voidage is big,
It is come out in this way, water flows to macropore from aperture extruding, to be substantially reduced 30 % or more of filtration resistance, filter cloth is also not easy to plug, and is fitted
It is blown off for compressed air, saves 20 % or more of filter-press dehydration kinetic energy.
Third aspect innovation is that the present invention uses self-loopa tail gas to blow off filter cloth, sends self-loopa by centrifugal blower (23)
Tail gas, tail gas blow off filter cloth by nozzle, according to strainer width, a nozzle are arranged every 15 cm widths, that is to say edge
Strainer width H does row's nozzle, forms the one group nozzle equal with strainer overall width H, and strainer obverse and reverse is both needed to be equipped with
Nozzle, the bore of each outlet spout are to choose in 6.0 millimeters of 2.0~Ф of Ф, and interior strainer nozzle (10) is for blowing off interior filter
It is used in band (11)；Same specification, outer strainer nozzle (24) use for blowing off in outer strainer (29)；Above-mentioned strainer nozzle
Two sides is blown off, and thus eliminates the washing step of traditional belt filter press, is also eliminated wash water recovery system, is simplified and set
It is standby, save kinetic energy.
First order rolling dehydrating process operating process of the invention is: mud is by the flocculation in mixing tank (3)
After outflow, by distributing baffle (4) control slurry thickness, into outer strainer gravity dehydration (5), mud after gravity dehydration, by
Outer strainer (29) is sent into idler wheel (6), and outer strainer (29) and interior strainer (11) form Y shape extrusion dehydration, and mud is in above-mentioned two filter
It is squeezed in band, recompresses and be dehydrated subsequently into idler wheel (27), make S-shaped extrusion dehydration subsequently into idler wheel (28) and idler wheel (26),
Subsequently into interior band driving wheel (12) and tyre driving wheel (13), blade desliming is carried out herein, the filter mud of abjection is by filter mud conduit
(14) it is sent into funnel (18)；After filter mud abjection, interior strainer (11) two sides carries out interior strainer nozzle (10) and blows off, and passes through interior filter
After band holds out against deflection preventer (8) and idler wheel (9), idler wheel (7) cycle operation afterwards is gone；Outer strainer (29) comes out from tyre driving wheel (13)
Afterwards, outer strainer (29) two sides also carries out outer strainer nozzle (24) and blows off, and enters idler wheel (25) afterwards, then is held out against by outer strainer anti-bias
After device (31) and idler wheel (30), idler wheel (32) cycle operation is gone.
2, second level hot gas, which is vortexed, to be dehydrated.The present invention generates 60 DEG C of hot-airs using air energy heat pump (16), with centrifugation wind
Machine (17) pressurization, makes wind pressure reach 5000Pa or more, rolls the filter mud for being dehydrated out by the first order, is sent into funnel (18), leakage
Bucket (18) is connected with centrifugal blower (17) outlet, and filter mud is fallen into centrifugal blower (17) outlet, hot-air and filter mud one
It rises and enters in vortex turbulence device (19), chosen in b=100~600 millimeter caliber Ф of vortex turbulence device (19), caliber Ф b's
Numerical value should meet 20~30 meter per second of air velocity in pipe；A=1.0 outer circle ring diameter Ф of vortex turbulence device (19)~
It is chosen in 6.0 meters, the selection of diameter Ф a numerical value, the water content that (20) should be exported according to dry mud powder requires to be chosen；The present invention
It is equipped with scroll plate (35) in the inside pipe wall of vortex turbulence device (19), scroll plate (35) quantity is one circumference 4, size choosing
It takes as shown in fig. 7, L=10~15 centimetre, D=2~8 millimeter, U=4~10 centimetre, S=3~5 centimetre are vortexed in Fig. 7
Plate is welded in vortex turbulence device pipe, and under scroll plate effect, the violent vortex turbulence in pipe makes gas-solid phase for hot-air and filter mud
Flash heat transfer mass transfer, moisture content rapidly enter in air-flow, then enter cyclone (22) together, and dry mud powder is from star-shaped feeder (21)
Out, dry mud powder moisture content can reach 40 % or less；The gas of cyclone (22) discharge, it is pressurized into centrifugal blower (23)
After send to the first order rolling dehydration in, blow off in filter cloth and use as self-loopa tail gas, the specifications and models of centrifugal blower (23), with
Centrifugal blower (17) is identical.
In implementing the present invention, it may, the manganese carbonate powder being added into mud is technical grade qualification quality, carbonic acid
Manganese (MnCO3) content >=90%, sodium chloride (Cl-)≤0.02%, heavy metal (in terms of Pb)≤0.05%；The sodium peroxide powder of addition
For technical grade qualification quality, molecular formula Na2O2, molecular weight 77.98, effective oxygen >=18%, iron content≤0.01%, it is above two at
Part is used as flocculant, operates with through of the invention, flocculating effect is very significant, has a extensive future.
In implementing process of the present invention, it is necessary to grasp the depth of flocculation progress, control manganese carbonate and sodium peroxide
Additional amount controls flocculation depth；Additional amount is very few, and flocculating effect is poor, will have a direct impact on the slurry dewatering efficiency of next step
It is deteriorated；In turn, if additional amount is excessive, it is constant that flocculating effect reaches a certain level rear effect, at this point, flocculant meeting is excessively used
The increase for bringing cost causes to waste.
Unique innovation of the invention is as follows: 1, manganese carbonate is mixed with sodium peroxide makees flocculant, mud for present invention original creation
Slurry flocculation significantly increases, and provides possibility for the depth of mud dehydration of next step；2, the present invention is filtered using trapezoidal cross-section
Item is substantially reduced 30 % or more of filtration resistance, not only plays energy-saving effect, but also blow off for filter cloth air-flow and provide possibility；3, this hair
It is bright that filter cloth is blown off using self-loopa tail gas, eliminate washing step and wash water recovery system；4, the special scroll plate of the present invention uses
Second level hot gas, which is vortexed, to be dehydrated, and realizes quick air solid phase heat and mass, after tail gas is pressurized, is blown off filter cloth as self-loopa and is used.
Compared with currently used belt filter press, the present invention can save 20 % or more of kinetic energy, reduce by 15 % of operating cost
More than, the mud conditioning ability of dewatering system doubles above, dry 40 % or less of mud powder moisture content of discharge.
Detailed description of the invention Fig. 1 is a kind of principle process schematic diagram of continuous high-efficient shield slurry dewatering system of the present invention；Fig. 2
It is strainer woven flat schematic diagram of the invention；Fig. 3 is strainer braiding sectional schematic diagram of the invention；Fig. 4 is filter of the invention
Plane and side schematic view；Fig. 5 is vortex turbulence device elevational schematic view of the invention；Fig. 6 is vortex turbulence device of the invention
Schematic top plan view；Fig. 7 is scroll plate schematic diagram of the invention.
In Fig. 1~7,1 is mud, and 2 be auxiliary material, and 3 be mixing tank, and 4 be cloth plate washer, and 5 be outer strainer gravity dehydration, and 6 are
Idler wheel, 7 be idler wheel, and 8 be that interior strainer holds out against deflection preventer, and 9 be idler wheel, and 10 be interior strainer nozzle, and 11 be interior strainer, and 12 be interior strainer
Driving wheel, 13 be outer strainer driving wheel, and 14 be filter mud conduit, and 15 be air intlet, and 16 be air energy heat pump, and 17 be centrifugation wind
Machine, 18 be funnel, and 19 be vortex turbulence device, and 20 be dry mud powder outlet, and 21 be star-shaped feeder, and 22 be cyclone, and 23 be centrifugation
Blower, 24 be outer strainer nozzle, and 25 be idler wheel, and 26 be idler wheel, and 27 be idler wheel, and 28 be idler wheel, and 29 be outer strainer, and 30 be idler wheel,
31 be that outer strainer holds out against deflection preventer, and 32 be idler wheel, and 33 be stainless steel filter item, and 34 be stainless steel steel wire, and 35 be scroll plate.
Specific embodiment is described in more detail the present invention below by way of specific embodiment:
A kind of continuous high-efficient shield slurry dewatering system, including first order rolling dehydration, second level hot gas are vortexed and are dehydrated.It is specific
Manufacturing process are as follows:
1, first order rolling dehydration.It is to make the great innovation of three aspects on the basis of belt filter press:
First aspect innovation, which is that manganese carbonate is mixed with sodium superoxide, makees flocculant, and flocculation of sludge effect is significantly increased, stirred with band
Room temperature, non-pressure vessel make mixing tank (3), it is desirable that start work under the conditions of blender always, be added in tank needs to handle on one side
Mud (1), it is the same below on one side to 0.035 %(mud weight ratio is added in mud (1)) manganese carbonate powder (making flocculant),
It also needs that 0.016 % sodium peroxide powder (making auxiliary agent) is added simultaneously, this operation is the stir mixing serialization under room temperature, normal pressure
Operation, it is agitated after by mixing tank (3) control discharging flow, mud be pass through in mixing tank (3) flocculation outflow.
Second aspect innovation is the filter item (33) with trapezoidal cross-section, this filter item (33) stainless steel material, in trapezoidal cross-section
In Fig. 4, long side M takes M=2 millimeter, and short side N takes N=1 millimeter, it is desirable that M=2 N, trapezoidal a height of P, P=0.8
Millimeter；Filter item (33) length H and strainer it is of same size, filter item (33) formed with stainless steel steel wire (34) close weave, no
The line footpath of steel steel wire (33) of becoming rusty is 1.0 millimeters of Ф, when braiding, and stainless steel steel wire (33) is mutually next to braiding, such as Fig. 2 and Fig. 3
Shown, strainer total length C should determine that outer strainer (29) and interior strainer (11) use phase according to whole equipment requirement, in-site measurement
The strainer of same specification, only total length is different；The positive face of strainer is small, and voidage is small, this face is contacted with filter mud, the strainer back side
Kong great, voidage is big, comes out in this way, water flows to macropore from aperture extruding.
Third aspect innovation, is to blow off filter cloth with self-loopa tail gas, sends self-loopa tail gas, tail gas by centrifugal blower (23)
Filter cloth is blown off by nozzle, according to strainer width, one nozzle is set every 15 cm widths, that is to say along strainer width H
Row's nozzle is done, the one group nozzle equal with strainer overall width H is formed, strainer obverse and reverse is both needed to be equipped with nozzle, each
The bore of outlet spout is 3.0 millimeters of Ф, and interior strainer nozzle (10) uses for blowing off in interior strainer (11)；Same specification,
Outer strainer nozzle (24) uses for blowing off in outer strainer (29)；Above-mentioned strainer nozzle two sides is blown off.
First order rolling dehydrating process operating process of the invention is: mud is by the flocculation in mixing tank (3)
After outflow, by distributing baffle (4) control slurry thickness, into outer strainer gravity dehydration (5), mud after gravity dehydration, by
Outer strainer (29) is sent into idler wheel (6), and outer strainer (29) and interior strainer (11) form Y shape extrusion dehydration, and mud is in above-mentioned two filter
It is squeezed in band, recompresses and be dehydrated subsequently into idler wheel (27), make S-shaped extrusion dehydration subsequently into idler wheel (28) and idler wheel (26),
Subsequently into interior band driving wheel (12) and tyre driving wheel (13), blade desliming is carried out herein, the filter mud of abjection is by filter mud conduit
(14) it is sent into funnel (18)；After filter mud abjection, interior strainer (11) two sides carries out interior strainer nozzle (10) and blows off, and passes through interior filter
After band holds out against deflection preventer (8) and idler wheel (9), idler wheel (7) cycle operation afterwards is gone；Outer strainer (29) comes out from tyre driving wheel (13)
Afterwards, outer strainer (29) two sides also carries out outer strainer nozzle (24) and blows off, and enters idler wheel (25) afterwards, then is held out against by outer strainer anti-bias
After device (31) and idler wheel (30), idler wheel (32) cycle operation is gone.
2, second level hot gas, which is vortexed, to be dehydrated.60 DEG C of hot-airs are generated with air energy heat pump (16), are added with centrifugal blower (17)
Pressure, makes wind pressure reach 5000Pa or more, rolls the filter mud that is dehydrated out by the first order, is sent into funnel (18), funnel (18) with
Centrifugal blower (17) outlet is connected, and filter mud is fallen into centrifugal blower (17) outlet, and hot-air enters whirlpool together with filter mud
It revolves in turbulator (19), b=300 millimeter caliber Ф of vortex turbulence device (19), the numerical value of caliber Ф b should meet the air-flow in pipe
25 meter per second of speed；A=4 meter outer circle ring diameter Ф of vortex turbulence device (19)；It is installed in the inside pipe wall of vortex turbulence device (19)
Have scroll plate (35), scroll plate (35) quantity is one circumference 4, and selection of dimension is as shown in fig. 7, in Fig. 7, L=12 centimetre, D
=4 millimeters, U=6 centimetre, S=3 centimetre, scroll plate is welded in vortex turbulence device pipe, hot-air and filter mud under scroll plate effect,
The violent vortex turbulence in pipe makes gas-solid phase flash heat transfer mass transfer, and moisture content rapidly enters in air-flow, then enters cyclone together
(22), dry mud powder comes out from star-shaped feeder (21), and dry mud powder moisture content can reach 40 % or less；Cyclone (22) discharge
Gas is sent in first order rolling dehydration, blowing off in filter cloth as self-loopa tail gas makes into centrifugal blower (23) after pressurized
With the specifications and models of centrifugal blower (23) are identical as centrifugal blower (17).
Claims (1)
1. a kind of continuous high-efficient shield slurry dewatering system, including first order rolling dehydration, second level hot gas are vortexed and are dehydrated, special
Sign is manufacturing process are as follows:
(1) make mixing tank with the room temperature with stirring, non-pressure vessel, it is desirable that start work under the conditions of blender always, on one side in tank
0.025~0.050 %(mud weight ratio is added in the mud that interior addition need to be handled into mud on one side, the same below) manganese carbonate
Powder (makees flocculant), while also needing 0.012~0.022 % sodium peroxide powder (making auxiliary agent) of addition；Then,
(2) the filter item for using trapezoidal cross-section, in trapezoidal cross-section Fig. 4, long side M takes M=1.4~3.6 millimeter, short side N,
Take N=0.7~1.8 millimeter, it is desirable that the N of M=2, trapezoidal a height of P, length H and the filter of item are filtered in P=0.6~1.5 millimeter
Band it is of same size, filter item is formed with stainless steel steel wire close weave, and the line footpath of stainless steel steel wire is 0.4~Ф of Ф, 1.6 milli
It is chosen in rice, when braiding, stainless steel steel wire is mutually located next to weave, and outer strainer and interior strainer use the strainer of same size, filter
Small with positive face, voidage is small, this face is contacted with filter mud, and strainer back side hole is big, and voidage is big, flows in this way, water is squeezed from aperture
It is come out to macropore；Then,
(3) filter cloth is blown off with self-loopa tail gas, self-loopa tail gas is sent by centrifugal blower, according to strainer width, every 15 centimetres
A nozzle is arranged in width, that is to say and does row's nozzle along strainer width, forms the one group nozzle equal with strainer overall width, filter
Band obverse and reverse is both needed to be equipped with nozzle, and the bore of each outlet spout is to choose in 6.0 millimeters of 2.0~Ф of Ф, interior filter
Band nozzle is used for blowing off in interior strainer, same specification, and outer strainer nozzle is used for blowing off in outer strainer, above-mentioned filter
Band nozzle two sides is blown off；Then,
(4) 60 DEG C of hot-airs are generated with air energy heat pump, is pressurizeed with centrifugal blower, wind pressure is made to reach 5000Pa or more, by first
The filter mud that grade rolling is dehydrated out, is sent into funnel, funnel is connected with centrifugal blower outlet, and filter mud falls into centrifugal blower and goes out
In mouth pipe, hot-air enters together with filter mud in vortex turbulence device, in b=100~600 millimeter caliber Ф of vortex turbulence device
It chooses, the numerical value of caliber Ф b should meet 20~30 meter per second of air velocity in pipe；The outer circle ring diameter Ф a of vortex turbulence device
It is chosen in=1.0~6.0 meters, scroll plate is installed in the inside pipe wall of vortex turbulence device, scroll plate quantity is one circumference 4,
Its selection of dimension is as shown in fig. 7, in Fig. 7, L=10~15 centimetre, D=2~8 millimeter, U=4~10 centimetre, S=3~5
Centimetre, scroll plate is welded in vortex turbulence device pipe, and hot-air and filter mud are acutely vortexed rapid under scroll plate effect in pipe
Stream, makes gas-solid phase flash heat transfer mass transfer, and moisture content rapidly enters in air-flow, then enters cyclone together, dry mud powder is under star
Glassware comes out, the gas of cyclone discharge, into centrifugal blower, is sent in first order rolling dehydration after pressurized, as following certainly
Ring tail gas, which is blown off in filter cloth, to be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910003232.5A CN109467301A (en) | 2019-01-03 | 2019-01-03 | A kind of continuous high-efficient shield slurry dewatering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910003232.5A CN109467301A (en) | 2019-01-03 | 2019-01-03 | A kind of continuous high-efficient shield slurry dewatering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109467301A true CN109467301A (en) | 2019-03-15 |
Family
ID=65678188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910003232.5A Pending CN109467301A (en) | 2019-01-03 | 2019-01-03 | A kind of continuous high-efficient shield slurry dewatering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109467301A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432315A (en) * | 2022-09-22 | 2022-12-06 | 中建丝路建设投资有限公司 | Vehicle-mounted shield sludge dewatering and transporting device and using method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0224481A (en) * | 1988-07-12 | 1990-01-26 | Shimizu Corp | Method and apparatus for recovering mud water in mud water-pressurizing type shield excavation |
| CN2643976Y (en) * | 2003-09-12 | 2004-09-29 | 成立良 | Belt pressing filter |
| WO2011142525A1 (en) * | 2010-05-14 | 2011-11-17 | (주)리엔텍엔지니어링 | Closed-loop-type apparatus for drying sludge using airflow |
| CN102559327A (en) * | 2011-12-16 | 2012-07-11 | 苏韶华 | Sludge synthetic fuel |
| CN202924891U (en) * | 2012-12-03 | 2013-05-08 | 成都源创环保工程有限公司 | Sludge drying belt filter press |
| CN106242242A (en) * | 2016-09-23 | 2016-12-21 | 北京林业大学 | A kind of manganese salt sludge conditioner and mud dewatering method |
| CN107670400A (en) * | 2017-08-31 | 2018-02-09 | 应城市天润产业用布有限责任公司 | A kind of production method of fine strainer |
| CN108946890A (en) * | 2018-06-11 | 2018-12-07 | 马鞍山市天工科技股份有限公司 | A kind of sewage disposal system integrating purification with concentration |
-
2019
- 2019-01-03 CN CN201910003232.5A patent/CN109467301A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0224481A (en) * | 1988-07-12 | 1990-01-26 | Shimizu Corp | Method and apparatus for recovering mud water in mud water-pressurizing type shield excavation |
| CN2643976Y (en) * | 2003-09-12 | 2004-09-29 | 成立良 | Belt pressing filter |
| WO2011142525A1 (en) * | 2010-05-14 | 2011-11-17 | (주)리엔텍엔지니어링 | Closed-loop-type apparatus for drying sludge using airflow |
| CN102559327A (en) * | 2011-12-16 | 2012-07-11 | 苏韶华 | Sludge synthetic fuel |
| CN202924891U (en) * | 2012-12-03 | 2013-05-08 | 成都源创环保工程有限公司 | Sludge drying belt filter press |
| CN106242242A (en) * | 2016-09-23 | 2016-12-21 | 北京林业大学 | A kind of manganese salt sludge conditioner and mud dewatering method |
| CN107670400A (en) * | 2017-08-31 | 2018-02-09 | 应城市天润产业用布有限责任公司 | A kind of production method of fine strainer |
| CN108946890A (en) * | 2018-06-11 | 2018-12-07 | 马鞍山市天工科技股份有限公司 | A kind of sewage disposal system integrating purification with concentration |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432315A (en) * | 2022-09-22 | 2022-12-06 | 中建丝路建设投资有限公司 | Vehicle-mounted shield sludge dewatering and transporting device and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204034864U (en) | A kind of vertical mill grinding system preparing active metal tailing micro-powder | |
| CN106587565A (en) | Continuous dewatering and curing integrated process for mud and silt | |
| CN208574745U (en) | A kind of ground granulated blast furnace slag fine grinding device built in aggregate processing machine | |
| CN110292807A (en) | Superfine Tailing thickening dewatering process | |
| CN206351171U (en) | A kind of Reclaimed Soil prosthetic device | |
| CN113217090A (en) | Large-scale low-concentration tailing dry-discharging treatment and paste treatment combined treatment method | |
| CN206494831U (en) | A kind of mud and the curing integrated system of mud continuous dehydration | |
| CN210385975U (en) | Cone crusher | |
| CN109467301A (en) | A kind of continuous high-efficient shield slurry dewatering system | |
| CN109293068A (en) | A kind of shield slurry processing system and processing method | |
| CN210287156U (en) | Comprehensive disposal system for composite admixture for concrete production by electrolytic manganese dioxide slag | |
| CN206296061U (en) | A kind of floatation system | |
| CN115677169A (en) | Three-stage concentration circulating treatment method for shield muddy water | |
| CN213674762U (en) | A throw material device for concrete production | |
| CN107597387A (en) | Building stones process dust-free noise reduction production line | |
| CN211752953U (en) | Filtration equipment is used in concrete production | |
| CN210710772U (en) | Filler kaolin production line for FCC catalyst | |
| CN107225041A (en) | A kind of double helix frequency conversion classification thickness seperator and its separation method | |
| CN106269215B (en) | A method of illite powder is produced by illite clay mine | |
| CN201098680Y (en) | Double magnetic roller dry separating machine | |
| CN219025192U (en) | Wheel type sand washer and fine sand recovery device | |
| CN218620637U (en) | Modification device of silica powder slurry for concrete | |
| CN206447784U (en) | A kind of white cement prepares and uses energy-saving and emission-reduction integral system | |
| CN214131840U (en) | Cement grinding device for cement production | |
| CN221187098U (en) | Water conservancy construction is with high-efficient cement stirring slip casting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190315 |