CN103708703B - System and process for carrying out deep dehydration rapidly and resource utilization on construction slurry - Google Patents

System and process for carrying out deep dehydration rapidly and resource utilization on construction slurry Download PDF

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Publication number
CN103708703B
CN103708703B CN201410028938.4A CN201410028938A CN103708703B CN 103708703 B CN103708703 B CN 103708703B CN 201410028938 A CN201410028938 A CN 201410028938A CN 103708703 B CN103708703 B CN 103708703B
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mud
gravity type
dewatering cavity
water
type boat
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CN103708703A (en
Inventor
杨才千
梁止水
吴智仁
徐佩佩
杨小聪
俞元洪
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Jiangsu Jiechengkai New Material Technology Co., Ltd.
Ningbo High-Tech Zone, Sea-Closure Engineering Technology Development Co., Ltd.
Southeast University
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JIANGSU JIECHENGKAI NEW MATERIAL TECHNOLOGY Co Ltd
NINGBO HIGH-TECH ZONE SEA-CLOSURE ENGINEERING TECHNOLOGY DEVELOPMENT Co Ltd
Southeast University
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Abstract

The invention discloses a system and a process for carrying out deep dehydration rapidly and resource utilization on construction slurry. The system comprises a gravity type dehydration cavity, wherein the gravity type dehydration cavity comprises a slurry inlet, a rotating pressure lever, a check valve, an upper cover board, a vacuum filtration device, a water guide plate, filter cloth, an outer dehydration cavity wall, a guide pipe, a stirring rod, a water collecting tray, a water drainage opening, a back-washing drying device, a scraper and a slurry discharge opening, wherein the upper cover board penetrates through the slurry inlet which is provided with the check valve, the upper cover board is connected with the rotating pressure lever, the rotating pressure lever drives the upper cover board to move up and down, the stirring rod is arranged at the lower end of the upper cover board, the slurry discharge opening is formed in the lower end of the gravity type dehydration cavity, and the scraper is arranged at the upper end of the slurry discharge opening. The slurry treatment system is high in integration degree, light in mass, strong in mobility, high in treatment efficiency, good in effect and low in cost, and is suitable for on-site rapid treatment on constructional engineering slurry, municipal sludge and river dredging sludge.

Description

A kind of construction slurry fast deep dehydration and recycling system and technique
Technical field
The present invention relates to a kind of high speed dewatering of slurries based on action of gravity and recycling system and technique, in particular to the fast dewatering of construction slurry, minimizing and process for reclaiming and technology, belong to construction work, public works, environmental engineering and mechanical engineering technical field.
Background technology
Incity, current city mud is mainly derived from construction work mud, municipal sludge and riverway sludge, along with the continuous quickening of urbanization process, the construction of all kinds of engineerings such as high level, high-rise building, subway, super expressway, large bridge gets more and more, and the generation of mud is also increasing.The natural earth of every cube, can produce 3-4 cube of mud, along with the increase of pile length, a large amount of earth become mud be discharged to construction site need outward transport.Therefore, every foundation works usually produce several thousand even tens side's mud need outward transport.Because mud moisture content is very high, when directly being transported outward by mud, the major part of actual shipment is water, and conveying efficiency is low, significantly adds Urban traffic burden and causes energy dissipation.If dealt with improperly, not only cause the waste of resource, but also cause serious environmental problem.For reducing transportation cost, mud is even entered the city planting ductworks such as municipal sewage system by part illegal enterprise steathily, causes alluvial and the blocking of the urban pipe networks such as municipal sewage system.Therefore, innoxious, the minimizing of mud become problem demanding prompt solution.
The generation of urban architecture mud mainly contains following feature: 1) wide material sources, in the operation such as foundation construction of Highrise buildings, subway, super expressway, the construction of bridge construction pile foundation, no-dig technique piping installation and other heavy structures, all have generation; 2) free sedimentation difficulty in the short period of time, the particle of mud is tiny, grating is poor, and the stability of the colloid of formation is better, is difficult to natural sedimentation and is separated.
The processing mode of current mud mainly contains following several: 1) canning cart (mud car) outward transport, which is directly promoted in mud car by slush pump by the mud that scene produces, nature mummification is carried out in the idle place by mud car mud being transported to countryside, city, but the comprehensive costs such as the transport charge which needs takes, labour cost, overheads are higher, every cubic metre of comprehensive cost is high, and causes environmental influence in various degree to region of dissolving; 2) precipitated in situ mummification, which needs to build settling tank at the construction field (site), the mud of generation is entered wherein, carry out natural sedimentation and mummification, sometimes also can add after some flocculation agents carry out flocculation treatment and carry out again precipitating and drying, but which needs to take big area soil, long processing period, and easily working-yard is brought inconvenience; 3) centrifuge dehydration, can adopt whizzer to dewater to construction slurry, but repeatedly stirs due to muddy water during piling construction, the bonding force of muddy water strengthens, especially Muddy Bottoms mud, is difficult to fast by mud-water separation by centrifugal force, and the energy consumption of centrifuge dehydration is simultaneously large and processing power is relatively low.
The environmental hazard of mud: the overwhelming majority accounting for mud capacity is directly discharged in the outward transport of mud at present, and the processing mode of this extensive style easily causes serious environmental pollution and wasting of resources phenomenon.1) contaminate environment, the random exhaust emission water source of construction slurry, destroy vegetation, harden soil, affects environmental beauty; 2) destroy water quality, the mud entering rivers steathily not only makes rivers muddy, destroys river channel ecology safety, jeopardizes city domestic water safety, and make channel filling, affect ship's navigation; 3) destroy urban operating mechanism, the mud entering the facilities such as water drain steathily very easily causes the destruction of city planting ductwork, blocks pipeline; 4) soil erosion is exacerbated.
In recent years, field of oil drilling is mainly concentrated on to the research for the treatment of of mud both at home and abroad and more research has been turned into river and lake silt, active sludge resource, and achieve certain scientific payoffs, and it is less to the research of the mud produced in construction work, have developed solidification technology, solid-liquid precipitated separation technology, mud reclamation treatment technology, desanding technology, chemical flocculation precipitation law technology etc., but these technology major parts are all in laboratory stage or lab scale stage, large-scale engineer applied can't be carried out.
High speed dewatering of slurries technology, as a kind of emerging treatment of mud technology, has the advantage that the feature of environmental protection is good, speed is fast, efficiency is high, treatment effect is obvious, comprehensive benefit is high, is more and more subject to the great attention of numerous researchists and enterprise.
Summary of the invention
Technical purpose: the object of patent of the present invention is to provide a kind of mud rapidly and efficiently processed system, this system can be applicable in the fast processing of construction slurry, municipal sludge and training of channel mud, and have that quality is light, volume is little, movability is strong, the obvious advantage for the treatment of effect, be convenient to heavy industrialization application.
Summary of the invention:
Construction slurry quick-dehydration device of the present invention is by special structure design, achieve mud fast deep dehydration under gravity, it is characterized in that whole system degree of integration is high, main dehydration is carried out in airtight high-efficiency dehydration chamber, thus environmental-protecting performance is high, dewatering speed is fast and effective, and the earth after process directly can carry out modification and recycling.
A kind of construction slurry fast deep dehydration and recycling system, is characterized in that: comprise gravity type boat davit dewatering cavity (a),
Described gravity type boat davit dewatering cavity, comprise mud inlet, rotate depression bar, vacuum breaker, upper cover plate, vacuum filtration machine, guide water board, filter cloth, dewatering cavity outer wall, drainage tube, stirring rod, water-collecting tray, water port, back flushing drying installation, cleaning shoe and mud discharging mouth, mud inlet through upper cover plate, and is provided with described vacuum breaker; Upper cover plate is connected with rotation depression bar, and drives upper cover plate to move up and down by rotating depression bar; Described stirring rod is installed in upper cover plate lower end; Described guide water board is arranged on dewatering cavity inside outer wall, described filter cloth is arranged on the inner side of guide water board, described water-collecting tray is arranged on the inside of guide water board, water-collecting tray arranges described drainage tube, described water-collecting tray and guide water board are connected to described water port, described vacuum filtration machine to be connected on dewatering cavity outer wall and to vacuumize described gravity type boat davit dewatering cavity, described back flushing drying installation is arranged on gravity type boat davit dewatering cavity lower end outside, be mud discharging mouth in gravity type boat davit dewatering cavity lower end, described cleaning shoe is set in mud discharging mouth upper end.
Also comprise a resource utilization modification groove and a band filter transporting mechanism,
It is material modified that described resource utilization modification groove comprises cell body and is arranged in cell body, is also provided with material modified import and sludge outlet in the upper of cell body;
Described band filter transporting mechanism comprises press filtration travelling belt, travelling belt setter, mud-scraper and spoil disposal plate, and described mud-scraper is arranged on the top of described press filtration travelling belt, and the mud of described resource utilization modification groove is also positioned at the top of described press filtration travelling belt.
Dewatering cavity outer wall is made up of detachable multiple parts.
The large lower section in cross section, gravity type boat davit dewatering cavity top is little.
The mud inlet place of gravity type boat davit dewatering cavity is provided with vacuum breaker, and mud can only enter gravity type boat davit high-efficiency dehydration chamber from slush pump, and can not reversed flow.
Water in mud is dewatered by the guide water board of gravity type boat davit high-efficiency dehydration chamber side-walls and the drainage tube of centre, and drainage channel is connected with vacuum filtration machine, can form certain negative pressure state in drainage pipeline.
Gravity type boat davit dewatering cavity top is provided with rotation depression bar, can be pressurizeed, improve dewatering efficiency by rotation depression bar and upper cover plate to gravity type boat davit dewatering cavity.Upper cover plate is provided with stirring rod, and stirring rod can carry out circumferential motion along gravity type boat davit dewatering cavity.
All drainage tubes in gravity type boat davit dewatering cavity are arranged on the circular water-collecting tray in dewatering cavity, central drainage.
The openings of sizes of the bottom mud discharging mouth of gravity type boat davit dewatering cavity can regulate.
The entrance of earth resource utilization modification groove is connected with the mud discharging mouth of gravity type boat davit dewatering cavity.
The entrance of band filter transporting mechanism is connected with the outlet of earth resource utilization modification groove, can be regulated the pressure of strainer by travelling belt setter.
With back flushing drying installation in gravity type boat davit dewatering cavity, the filter cloth that can dewater in cavity to gravity type boat davit carries out back flushing fast and drying treatment.
Mud of the present invention rapidly and efficiently processed system comprises three major portions, gravity type boat davit dewatering cavity, earth resource utilization modification groove and band filter transporting mechanism.Wherein, gravity type boat davit dewatering cavity is core and the basic component of whole system.According to character and the processing requirements of mud, gravity type boat davit dewatering cavity can work independently, also can with one or two work in combination in other two parts.And earth resource utilization groove and band filter transporting mechanism are the accessory constituents of mud rapidly and efficiently processed system, as required with gravity type boat davit dewatering cavity with the use of, the two operation in technological process also can be changed according to demand.
1, the dehydration of mud fast deep and recycling system
1) gravity type boat davit dewatering cavity
Gravity type boat davit dewatering cavity comprises mud inlet, rotates depression bar, vacuum breaker, upper cover plate, vacuum filtration machine, guide water board, filter cloth, dewatering cavity outer wall, drainage tube, stirring rod, water-collecting tray, water port, back flushing drying installation, cleaning shoe and mud discharging mouth composition.Mud inlet through upper cover plate, and is provided with vacuum breaker, and mud can only be pumped to gravity type boat davit dewatering cavity from slush pump, and can not countercurrent flow; Upper cover plate is connected with rotation depression bar, and drives upper cover plate to move up and down by rotating depression bar, thus applies pressure to gravity type boat davit dewatering cavity; Upper cover plate is provided with stirring rod simultaneously, and stirring rod can move in a circle along dehydration cavity, stirs, to improve dewatering efficiency to the mud in cavity.Gravity type boat davit dehydration chamber outer wall is made up of two parts or multiple part, each several part can carry out fast and convenient assembling by bolt, buckle etc. and open or split, when needing to check the drainage tube in cavity, guide water board and filter cloth, clean or change, the outside of directly opening gravity type boat davit dehydration cavity just can operate.
The water discharging part of cavity forms primarily of vacuum filtration machine, guide water board, filter cloth, drainage tube, water-collecting tray and water port.Draining in dewatering cavity is mainly divided into two systems, and one is discharge along the inwall of dewatering cavity and guide water board, and another collects rear discharge by drainage tube and water-collecting tray.Guide water board is made up of certain thickness porous plate, is installed on gravity type boat davit dewatering cavity inside outer wall, pastes high performance filter cloth in the inner side of guide water board, and the water of mud can enter guide water board by filter cloth, and the outer wall then along gravity type boat davit dewatering cavity is discharged.Drainage tube is vesicular one end open pipe, outer surface cover one deck filter bag, and there is screw thread the lower end of drainage tube, and is installed on water-collecting tray by screw thread; Water in mud enters thrust-augmenting nozzle by the filter cloth on thrust-augmenting nozzle, then comes together in water-collecting tray, and discharges gravity type boat davit dewatering cavity by water port.Meanwhile, in order to increase the power of draining, water exhaust system is installed vacuum filtration machine, to make to form negative pressure in water exhaust system thus the power of raising draining.
The cross section of gravity type boat davit dewatering cavity is up big and down small, because most water has discharged cavity by above-mentioned two cover water exhaust system, so the amount of substance of discharging is less than the amount entered, make the lower little upper pressure being conducive to greatly improving further mud row notch portion in addition, reduce the rear mud soil's water content of process.For the tapered section preventing earth to be pasted onto gravity type boat davit dewatering cavity, in this part, cleaning shoe is installed.In addition, the size of gravity type boat davit dewatering cavity bottom mud discharging mouth can be regulated by setter.
Another feature of this gravity type boat davit dewatering cavity is with back flushing and drying installation, when carrying out back flushing to system after system cloud gray model for some time, high pressure water can be adopted to carry out back flushing high-pressure air also can be adopted to carry out back flushing, and can carry out drying treatment to it.
2) earth resource utilization modification groove
As required, at earth resource utilization modification groove, resource utilization modification is carried out to the earth after dehydration.The entrance of earth resource utilization modification groove exports with the earth of gravity type boat davit dewatering cavity and is connected, and adds material modified, and carry out uniform stirring and modification by material modified entrance in modification groove.
3) entrance that the outlet of earth resource utilization modification groove directly filters transporting mechanism with band is connected, and by the pressure of travelling belt setter accommodation zone filter, to the further press filtration deep dehydration of modified earth, and is sent to storage place after making it first one-step forming.Thus, band filter transmit with two major functions, one be by band filter further deep dehydration, two be by dehydration and recycling treatment after earth be sent to storage location.
2, the dehydration of mud fast deep and process for reclaiming
The fast dewatering of construction slurry and recycling treatment process mainly comprise following step, and wherein modified the and dehydration of mud is the key component of whole technological process.
1) by slush pump slush pump sent into the modified pond of mud and carry out modified, object makes mud be in homogeneous and stabilization of state as far as possible, adds appropriate inorganic or organic floculant simultaneously and improves flocculation and dewatering speed, as poly-aluminium, poly-ferrosilicon etc.;
2) according to the water content requirement after earth process, the size of adjustment gravity type boat davit dewatering cavity mud discharging mouth, the size of mud discharging mouth has direct relation with the rear mud soil's water content size of process, pressure in the larger dewatering cavity of size is less, the mud soil's water content of then discharging is higher, otherwise the earth water ratio of then discharging is low;
3) mud pumping to the gravity type boat davit after modified to be dewatered cavity by slush pump, and control mud by vacuum breaker can only one way flow;
4) mud starts vacuum filtration machine and stirring rod after being pumped to gravity type boat davit dewatering cavity, makes to form certain negative pressure in the drainage pipeline of cavity, regulates the pressure rotated in depression bar adjustment chamber as required;
5) according to resource utilization purposes and performance requirement, add suitable material modified in earth resource utilization modification groove, modification is carried out to earth, as the materials such as unslaked lime, gypsum, cement or flyash improve the mechanical property after its dehydration, add the production porous building slabs such as foam material, or add the production such as humic material, water-holding agent afforestation soil;
6) when the mud-water separation speed of gravity type boat davit dewatering cavity is reduced to a certain degree, adjustment mud flow valve, by mud pumping to another gravity type boat davit dewatering cavity, carries out back flushing and drying treatment to this chamber;
7) accommodation zone filter transporting mechanism travelling belt setter, apply suitable pressure, to process after the further advanced treatment of earth and transmit.
Beneficial effect:
System adopts physical filtering and chemical flocculation to dewater the mode of working continuously combined, the stabilization of construction slurry and minimizing obtain sufficient realization, the water ratio of mud is reduced to less than 50% from 80-90%, become solid-state by flow state, fully realize stabilization and the minimizing for the treatment of of mud, significantly reduce processing cost.
Integration degree is high.The mode of physical filtering, chemical flocculation and mechanical dehydration organically combines by this system, various Processing Equipment being integrated in is a complete dewatering system, conveniently carry out modular combination for different characteristics of mud and processing demands, well achieve overall-in-one control schema and the management for the treatment of of mud.
Quality is light, volume is little, movability is strong.System is by integrated for dehydration equipment at different levels basis, treatment process is connected rationally smooth, the volume of each equipment is little, and each dehydration equipment and process facility all adopt, and quality is light, the high performance light material of good endurance is made, substantially reduce cumulative volume and the total mass of system, decrease floor space, and movability significantly strengthens, for the site disposal of mud provides guarantee.
Energy-saving and environmental protection and reduction of discharging.The gravity that system fully by means of mud dewaters, and does not need too much energy consumption, reduces the discharge of carbonic acid gas, has significant power conservation feature; Main dehydration procedure carries out in the space of relative closure, effectively reduces the pollution of mud to environment, and carrying out recycling treatment can turn waste into wealth simultaneously, achieves resource and economic reprocessing cycle; Due to mud is carried out high-efficiency dehydration and recycling, " zero " that achieves mud " waste " even " bears " discharge.
Accompanying drawing illustrates:
Fig. 1 construction slurry fast deep dewatering system and recycling system figure.
Fig. 2 drainage tube structural representation.
Fig. 3 water-collecting tray and with drainage tube interface chart.
Fig. 4 mud high-efficiency dehydration and process for reclaiming schema.
Marginal data:
A gravity type boat davit dewatering cavity; B earth resource utilization modification groove; C band filter transporting mechanism; The modified pond of d mud.
1 mud inlet; 2 rotate depression bar; 3 vacuum breaker; 4 upper cover plates; 5 vacuum filtration machines; 6 guide water boards; 7 filter clothes; 8 dewatering cavity outer walls; 9 drainage tubes; 10 stirring rod; 11 water-collecting trays; 12 water port; 13 back flushinges are dry; 14 cleaning shoes; 15 mud discharging mouths; 16 material modified entrances; 17 earth resource utilization modification grooves; 18 travelling belt setters; 19 mud-scrapers; 20 press filtration travelling belts; 21 spoil disposal plates; 22 filter bag standing bolts; 23 connecting threads; 24 connecting threads; 25 nuts; 26 mud; 27 slush pump; 28 slush pump; 29 mud flow valves.
Embodiment:
Below in conjunction with accompanying drawing, specifically implement to be described to patent of the present invention:
Fig. 1 is the schematic diagram of the dehydration of construction slurry gravity type boat davit and recycling system, and whole system is made up of gravity type boat davit dewatering cavity a, earth resource utilization modification groove b and band filter transporting mechanism c.By special structure design, fast deep dehydration is under gravity realized in gravity type boat davit dewatering cavity, it is characterized in that whole system degree of integration is high, main dehydration is carried out in airtight high-efficiency dehydration chamber, thus environmental-protecting performance is high, dewatering speed is fast and effective, and the earth after process directly can carry out modification and recycling.
Gravity type boat davit dewatering cavity is core and the basic component of whole system, and it can work independently, one or two work in combination also can filtered in transporting mechanism c with band with earth resource utilization modification groove b.
Gravity type boat davit dewatering cavity comprises mud inlet 1, rotation depression bar 2, vacuum breaker 3, upper cover plate 4, vacuum filtration machine 5, guide water board 6, filter cloth 7, dewatering cavity outer wall 8, drainage tube 9, stirring rod 10, water-collecting tray 11, water port 12, back flushing drying 13, cleaning shoe 14 and mud discharging mouth 15 and forms.Mud inlet is arranged on upper cover plate 4, in order to prevent mud from refluxing from gravity type boat davit dewatering cavity a, has installed vacuum breaker 3, only allows mud from slush pump to dewatering cavity uniflux, and can not countercurrent flow; Upper cover plate 4 is connected with rotation depression bar 2, driving upper cover plate 4 to move up and down, thus applying pressure to gravity type boat davit dewatering cavity, improving dehydrating effect further by rotating depression bar 2; For preventing mud to be pasted onto on the wall of gravity type boat davit dewatering cavity chamber, be provided with stirring rod 10 at upper cover plate, stirring rod can move in a circle along dehydration cavity, stirs the mud in cavity; Gravity type boat davit dewatering cavity outer wall 8 mainly plays a supportive role, form internal cavities, be made up of two parts or multiple part, each several part can carry out rapid-assembling and dismounting by bolt, buckle etc., when needing to check the guide water board 6 in cavity, filter cloth 7 and drainage tube 9, clean or change, the outside 8 of directly opening gravity type boat davit dehydration cavity operates.
Guide water board 6 is a kind of vesicular circular arc plates, is embedded in dewatering cavity inside outer wall, can also can with plastic plates such as porous polypropylenes with expanded metal, and hole has UNICOM's performance, and water can be allowed to be discharged by guide water board in mud.Filter cloth 7 can adopt the good non-woven fabrics of wetting ability
The structure of drainage tube 9 as shown in Figure 2, by the pipe of one end open, the hole of multiple UNICOM is had above pipe, strainer is arranged on drainage tube 9 by filter bag standing bolt 22, water in mud can enter drainage tube by the filter cloth of the outside of drainage tube 9, finally come together in water-collecting tray 11, discharge gravity type boat davit dewatering cavity a through water port 12.
As shown in Figure 3, water-collecting tray is ring-type open tube to water-collecting tray 11, and its pipe diameter size can be determined according to the size of discharge capacity, and drainage tube 9 is connected with water-collecting tray 11 by connecting thread 23.Water-collecting tray passes through; 23 connecting threads; Water-collecting tray is connected with gravity type boat davit dewatering cavity a with nut 25 by connecting thread 24.
Vacuum filtration machine 5 is connected with water-collecting tray 11 and guide water board 6, and vacuum filtration machine can make water-collecting tray and filter cloth-guide water board-dewatering cavity wall space form certain negative pressure after starting, and the size of negative pressure can be regulated by the watt level of vacuum filtration machine.
Gravity type boat davit dewatering cavity is provided with two cover water exhaust system altogether, and a set of is arrange the water of being discharged by guide water board specially, the another set of water being special row and being discharged by thrust-augmenting nozzle-water-collecting tray, and the water of final two cover water exhaust system collects rear unification and discharges dewatering cavity.
Mud discharging mouth 15 size of dewatering cavity can regulate, and is provided with bore automatic mechanism, regulates the pressure size in chamber by regulating the size of mud discharging mouth size and discharges mud soil's water content size.
The cross section of gravity type boat davit dewatering cavity is up big and down small, because most water has discharged cavity by above-mentioned two cover water exhaust system, so the amount of the earth of discharging much smaller than the amount entered, will make the lower little upper pressure being conducive to greatly improving further row's notch portion, mud soil's water content after reduction process in addition.For the tapered section preventing earth to be pasted onto gravity type boat davit dewatering cavity, in this part, cleaning shoe is installed.In addition, the size of gravity type boat davit dewatering cavity bottom mud discharging mouth can be regulated by setter.
Another feature of this gravity type boat davit dewatering cavity is with back flushing and drying installation 13, when carrying out automatic backwash to system after system cloud gray model for some time, high pressure water can be adopted to carry out back flushing also can adopt high-pressure air to carry out back flushing, and can carry out drying treatment to it.
2 earth resource utilization modification grooves
As required, at earth resource utilization modification groove b, resource utilization modification is carried out to the earth after dehydration.The entrance of earth resource utilization modification groove exports with the earth of gravity type boat davit dewatering cavity and is connected, and adds material modified, and carry out uniform stirring and modification by material modified entrance in modification groove.
The entrance that the outlet of 3 earth resource utilization modification grooves directly filters transporting mechanism c with band is connected, and by the pressure of travelling belt setter accommodation zone filter, to the further press filtration deep dehydration of modified earth, and is sent to storage place after making it first one-step forming.Thus, band filter transmit with two major functions, one be by band filter further deep dehydration, two be by dehydration and recycling treatment after earth be sent to storage location.
2, the dehydration of mud fast deep and process for reclaiming
The fast dewatering of construction slurry and recycling treatment process route as shown in Figure 4, mainly comprise following step, and wherein modified the and dehydration of mud is the key component of whole technological process.
8) by slush pump 26 mud 26 be pumped into mud modified pond d and carry out modified, object makes mud 26 be in homogeneous and stabilization of state as far as possible, adds appropriate inorganic or organic floculant simultaneously and improves flocculation and dewatering speed, as poly-aluminium, poly-ferrosilicon etc.;
9) according to the water content requirement after earth process, the size of adjustment gravity type boat davit dewatering cavity mud discharging mouth 15, the size of mud discharging mouth has direct relation with the rear mud soil's water content size of process, pressure in the larger dewatering cavity of size is less, the mud soil's water content of then discharging is higher, otherwise the earth water ratio of then discharging is low;
10) by slush pump 28 by the mud pumping after modified to gravity type boat davit dehydration cavity a, and control mud by vacuum breaker 3 can only one way flow;
11) mud starts vacuum filtration machine 5 and stirring rod 10 after being pumped to gravity type boat davit dewatering cavity a, makes to form certain negative pressure in the drainage pipeline of cavity, regulates the pressure rotated in depression bar adjustment chamber as required;
12) according to resource utilization purposes and performance requirement, in earth resource utilization modification groove, b adds suitable material modified, modification is carried out to earth, as the materials such as unslaked lime, gypsum, cement or flyash improve the mechanical property after its dehydration, add the production porous building slabs such as foam material, or add the production such as humic material, water-holding agent afforestation soil;
13) when the mud-water separation speed of gravity type boat davit dewatering cavity is reduced to a certain degree, adjustment mud flow valve 29, by mud pumping to another gravity type boat davit dewatering cavity a ', carries out back flushing and drying treatment to this chamber;
14) accommodation zone filter transporting mechanism travelling belt setter, apply suitable pressure, to process after the further advanced treatment of earth and transmit.

Claims (5)

1. the dehydration of construction slurry fast deep and a recycling system, is characterized in that: comprise gravity type boat davit dewatering cavity (a),
Described gravity type boat davit dewatering cavity, comprise mud inlet, rotate depression bar, vacuum breaker, upper cover plate, vacuum filtration machine, guide water board, filter cloth, dewatering cavity outer wall, drainage tube, stirring rod, water-collecting tray, water port, back flushing drying installation, cleaning shoe and mud discharging mouth, mud inlet through upper cover plate, and is provided with described vacuum breaker; Upper cover plate is connected with rotation depression bar, and drives upper cover plate to move up and down by rotating depression bar; Described stirring rod is installed in upper cover plate lower end; Described guide water board is arranged on dewatering cavity inside outer wall, described filter cloth is arranged on the inner side of guide water board, described water-collecting tray is arranged on the inside of guide water board, water-collecting tray arranges described drainage tube, described water-collecting tray and guide water board are connected to described water port, described vacuum filtration machine to be connected on dewatering cavity outer wall and to vacuumize described gravity type boat davit dewatering cavity, described back flushing drying installation is arranged on gravity type boat davit dewatering cavity lower end outside, be mud discharging mouth in gravity type boat davit dewatering cavity lower end, described cleaning shoe is set in mud discharging mouth upper end.
2. construction slurry fast deep dehydration according to claim 1 and recycling system, is characterized in that: also comprise resource utilization modification groove (b) and band filter transporting mechanism (c),
It is material modified that described resource utilization modification groove comprises cell body and is arranged in cell body, is also provided with material modified import and sludge outlet in the upper of cell body;
Described band filter transporting mechanism comprises press filtration travelling belt, travelling belt setter, mud-scraper and spoil disposal plate, and described mud-scraper is arranged on the top of described press filtration travelling belt, and the mud of described resource utilization modification groove is also positioned at the top of described press filtration travelling belt.
3. a kind of construction slurry fast deep dehydration according to claim 1 and 2 and recycling system, is characterized in that: dewatering cavity outer wall is made up of detachable multiple parts.
4. a kind of construction slurry fast deep dehydration according to claim 3 and recycling system, is characterized in that: the large lower section in cross section, gravity type boat davit dewatering cavity top is little.
5., based on a technique for a kind of construction slurry fast deep dehydration according to claim 1 and recycling system, it is characterized in that, comprise following step:
Carry out modified to mud, and add appropriate inorganic or organic floculant;
According to the water content requirement after earth process, the size of adjustment gravity type boat davit dewatering cavity mud discharging mouth;
By slush pump or Pulp pump by the mud pumping after modified to gravity type boat davit dewatering cavity, and control mud by vacuum breaker can only one way flow;
Mud starts vacuum filtration machine and stirring rod after being pumped to gravity type boat davit dewatering cavity, makes to form negative pressure in the drainage pipeline of cavity, regulates the pressure rotated in depression bar adjustment chamber as required;
According to resource utilization purposes and performance requirement, add material modified in earth resource utilization modification groove, modification is carried out to earth;
When the mud-water separation speed of gravity type boat davit dewatering cavity is reduced to a certain degree, adjustment mud flow valve, by slush pump to another gravity type boat davit dewatering cavity, carries out back flushing and drying treatment to this chamber;
The travelling belt setter of accommodation zone filter transporting mechanism, applies suitable pressure, to processing the rear further advanced treatment of earth and transmitting.
CN201410028938.4A 2014-01-22 2014-01-22 System and process for carrying out deep dehydration rapidly and resource utilization on construction slurry Expired - Fee Related CN103708703B (en)

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