CN104475230A - Solid-liquid grading device - Google Patents
Solid-liquid grading device Download PDFInfo
- Publication number
- CN104475230A CN104475230A CN201410646044.1A CN201410646044A CN104475230A CN 104475230 A CN104475230 A CN 104475230A CN 201410646044 A CN201410646044 A CN 201410646044A CN 104475230 A CN104475230 A CN 104475230A
- Authority
- CN
- China
- Prior art keywords
- control unit
- flow
- overflow
- desilting
- solid
- 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.)
- Granted
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a solid-liquid grading device. The solid-liquid grading device comprises a hopper type material barrel, an overflow unit, a material supply unit, a material discharge unit, an ascending overflow rate control unit and a sediment discharge concentration control unit, the overflow unit is arranged at the periphery of a top opening of the hopper type material barrel, the material supply unit is arranged at a top inlet of the hopper type material barrel, the material discharge unit is arranged at a bottom outlet of the hopper type material barrel, the ascending overflow rate control unit stabilizes the overflow rate of the hopper type material barrel in a standard range, and the sediment discharge concentration control unit stabilizes the sediment concentration discharged from the hopper type material barrel in a standard range. The solid-liquid grading device intelligently controls the feed amount and discharge amount through using a flow rate detector to monitor the overflow rate and a concentration meter to detect the discharge concentration, realizes to grade solid particles according to a constant settling speed, realizes the precise granularity and concentration control for solid-liquid two-phase flow size grading products through full-automatic operation and control, and obtains the fine products and coarse products with high grading quality.
Description
Technical field
The present invention relates to stock grading technical field, relate to a kind of solid-liquid grading plant more specifically, especially can be widely used in the grading plant of the solid-liquid two-phase flow slurries of the industries such as environmental protection, mine, metallurgy, building materials, chemical industry.
Background technology
In industries such as environmental protection, mine, metallurgy, building materials, chemical industry, often to carry out the progressive operation of solid-liquid two-phase flow slurries, especially, in ore pulp classification, desliming operation, usually all need the solids in ore pulp slurries to be classified as fine fraction product and coarse fraction product according to the difference such as granularity and proportion.The domestic and international graded desliming equipment for solid-liquid two-phase flow slurries mainly contains cyclone, spiral classifier, dense bucket, incline board concentrating box etc. at present, these equipment in use have following main feature: 1. cyclone is mainly used in the closed circuit classification of ore grinding and desliming, advantage is that disposal ability is large, product design is high, and grinding system water consumption is few; Shortcoming is that power consumption is comparatively large, and operation easier is higher, product granularity and the bad control of concentration, classification efficiency about 55%; 2. spiral classifier is used for forming closed circuit classification with ore mill, and advantage is working stability, has from enhanced feature; Shortcoming is before classification and sand return needs the tune thin liquid pulp concentration that adds water, and water consumption is many, and product pulp density is rare, and disposal ability is little, and classification matter efficiency is about 35%.3. dense bucket is mainly used in the pre-classification of gravity separation technology desliming and open-circuit grinding, equipment non-power consumption, and structure is simple, but shortcoming is desilting concentration is difficult to control, and discharge is obstructed, and desliming efficiency is low; 4. incline board concentrating box is mainly used in desliming dehydration, and unit capacity is comparatively large, but have be difficult to control with the desilting concentration that dense bucket is the same, discharge is obstructed, the inefficient shortcoming of desliming.Therefore the ubiquitous defect of graded desliming equipment of solid-liquid two-phase flow slurries of the prior art be that classification efficiency is low, product granularity and the bad control of concentration, the fine fraction product that requires and coarse fraction product cannot be obtained.
Summary of the invention
The present invention is based on above-mentioned prior art problem, the solid-liquid grading plant of a kind of brand new of proposition of innovation, especially for two phase flow slurries, there is good grading effect, solid-liquid grading plant of the present invention by installing flow detector on the overflow launder of bucket type barrel, densimeter installed by the desilting discharge line of bucket type barrel, utilize the principle that in solid-liquid two-phase flow slurries, solids granularity is different with difference sinking speed in water of proportion, detect discharge concentration in real time by flow detector Real-Time Monitoring excess flow and densimeter and come Based Intelligent Control inlet amount and withdrawal rate, reach dynamic equilibrium, realize the classification by waiting reduction of speed degree to carry out solids, the accurate control of solid-liquid two-phase flow slurries graded product granularity and concentration is achieved with the manipulation of full-automation, obtain the higher fine fraction product of classification quality and coarse fraction product, innovate environmental protection, mine, metallurgical, building materials, solid-liquid two-phase flow slurries grading plant in the industries such as chemical industry.
It is as follows that the present invention solves the problems of the technologies described above taked technical scheme:
A kind of solid-liquid grading plant, comprise: bucket type barrel, overflow unit, material supply unit, material deliverying unit, rising excess flow control unit and desilting discharge concentration control unit, described overflow unit is arranged at the open top periphery of bucket type barrel, for providing fine fraction overflow output of products, described material supply unit is connected to the top entry of bucket type barrel, for providing solid-liquid two-phase flow slurries to be fractionated to bucket type barrel, described material deliverying unit is arranged at the outlet at bottom of bucket type barrel, for providing coarse fraction desilting output of products, described rising excess flow control unit by constant for the excess flow of bucket type barrel in critical field, the desilting constant concentration that bucket type barrel is discharged by described desilting discharge concentration control unit is in critical field.
Further according to solid-liquid grading plant of the present invention, wherein said overflow unit comprises the overflow launder 3 being arranged at bucket type barrel open top periphery, and the bottom of described overflow launder is connected with overflow drainage line; Described material supply unit comprises pump pond 10, pump 9 and pump tubing length, and described pump 9 is arranged in pump pond 10, and is pumped in bucket type barrel by the solid-liquid two-phase flow slurries in pump pond 10 by pump tubing length; Described material deliverying unit includes speed change discharge apparatus, and the material inlet of described speed change discharge apparatus is connected to the outlet at bottom of bucket type barrel, and the material outlet of described speed change discharge apparatus connects desilting discharge line.
Further according to solid-liquid grading plant of the present invention, wherein on described overflow launder, be provided with flow detector 5, described desilting discharge line is provided with densimeter 8, described overflow drainage line is provided with flow divider 4, described flow divider 4 comprises two discharging ports, first discharging port is connected to described pump pond 10 by overflowing back pipe material, second discharging port connects overflow drain road, fine fraction desilting output of products is provided by described overflow drain road, also include control unit 6, described control unit 6 is connected to described flow detector 5, densimeter 8, speed change discharge apparatus 7 and flow divider 4, and in described control unit, prestore excess flow scope and the desilting concentration range of standard.
Further according to solid-liquid grading plant of the present invention, wherein said rising excess flow control unit comprises described flow detector 5, flow divider 4 and control unit 6, when flow detector 5 detect enter overflow launder excess flow lower than control unit in prestore standard excess flow scope time, described control unit controls described flow divider 4 and increases overflow shunt volume to described pump pond, when described flow detector 5 detect enter overflow launder excess flow higher than control unit in prestore standard excess flow scope time, described control unit controls described flow divider 4 and reduces overflow shunt volume to described pump pond, described desilting discharge concentration control unit comprises described densimeter 8, speed change discharge apparatus 7 and control unit 6, when described densimeter detect through desilting discharge line discharge desilting concentration lower than control unit in prestore standard desilting concentration range time, described control unit controls described speed change discharge apparatus and reduces desilting discharge rate, when described densimeter detects during the desilting concentration of discharging through desilting discharge line is higher than control unit the standard desilting concentration range prestored, described control unit controls described speed change discharge apparatus and increases desilting discharge rate.
Further according to solid-liquid grading plant of the present invention, wherein said control unit is connected to described pump, when described flow detector 5 detect enter overflow launder excess flow lower than control unit in prestore standard excess flow scope time, described control unit controls described pump increases pump speed, when described flow detector 5 detect enter overflow launder excess flow higher than control unit in prestore standard excess flow scope time, described control unit control described pump reduce pump speed.
Further according to solid-liquid grading plant of the present invention, wherein said bucket type barrel is the barrel of funnel structure of Upper cylindrical cylinder, lower cone cylinder, and the bottom end opening of cylindrical drum is integrally connected to the open top of taper cone barrel, the center of inside of described cylindrical drum is provided with material filling cylinder 2, the outlet of described pump tubing length is connected to the open top of material filling cylinder 2, the cone bottom outlet of described taper cone barrel is connected to the material inlet of described speed change discharge apparatus, and described overflow launder 3 is formed as annular groove-shaped structure around the open top periphery of described cylindrical drum.
Further according to solid-liquid grading plant of the present invention, wherein also include clear water supplementary units, clear water supplementary units is connected to the taper cone barrel sidewall of described bucket type barrel 1.
Further according to solid-liquid grading plant of the present invention, wherein said control unit comprises input/output module, memory, comparator and MCU, and described input/output module, memory and comparator are connected to described MCU.
Further according to solid-liquid grading plant of the present invention, wherein said flow divider 4 is Electrocontrolled tee valve, described flow detector is supersonic liquid level flowmeter, microwave meter or electromagnetic wave flowmeter, described speed change discharge apparatus 7 comprises screw pump and frequency-variable electronic device speed regulator, described densimeter is the densimeter be made up of gamma ray density meter, and described control unit is the electronic automatic controller adopting SIEMENS PLC Programmable Logic Controller composition.
The present invention further provides a kind of stage division of solid-liquid two-phase flow slurries, comprises the following steps:
Step one, be provided in a bucket type barrel by solid-liquid two-phase flow slurries, wherein fine particle stage material rises and from the outside overflow of the open top of bucket type barrel, coarse fraction material sinking also discharges desilting from the outlet at bottom of bucket type barrel;
Step 2, in real time detect excess flow and desilting concentration, and controlling water kick flow and desilting constant concentration are in critical field, with etc. fall velocity stages and go out fine fraction product and coarse fraction product.
Further according to stage division of the present invention, wherein in step 2, when the excess flow detected is lower than critical field, increase the inlet amount of solid-liquid two-phase flow slurries to described bucket type barrel, when the excess flow detected is higher than critical field, reduce the inlet amount of solid-liquid two-phase flow slurries to described bucket type barrel; When the desilting concentration detected is lower than critical field, reduce the desilting discharge rate of bucket type barrel outlet at bottom, when the desilting concentration detected is higher than critical field, increase the desilting discharge rate of bucket type barrel outlet at bottom.
Further according to stage division of the present invention, the open top periphery of wherein said bucket type barrel is provided with overflow launder, described fine particle stage material enters described overflow launder from the outside overflow of the open top of bucket type barrel, described overflow launder is provided with flow detector, and described flow detector enters the Fluid Volume in described overflow launder by overflow in the detection unit interval or the change of the fluid volume in the unit interval in described overflow launder detects excess flow; The outlet at bottom of described bucket type barrel is provided with speed change discharge apparatus and densimeter, detects described desilting concentration in real time by described densimeter, is controlled the desilting discharge rate of bucket type barrel outlet at bottom by described speed change discharge apparatus.
Further according to stage division of the present invention, wherein also include control unit, described control unit is connected to described flow detector, speed change discharge apparatus and densimeter, excess flow scope and the desilting concentration range of standard is prestored in described control unit, described control unit controls the inlet amount of solid-liquid two-phase flow slurries to described bucket type barrel based on the excess flow signal that described flow detector detects, and described control unit controls the desilting discharge rate of described speed change discharge apparatus based on the desilting concentration signal that described densimeter detects.
Further according to stage division of the present invention, the overflow marker pipe of wherein said isopipe root is provided with flow divider, one of them discharging port of described flow divider is connected to the pump pond storing solid-liquid two-phase flow slurries by pipeline, solid-liquid two-phase flow slurries in described pump pond are pumped in bucket type barrel by pump, and described control unit is connected to described flow divider and controls its overflow shunt volume to pump pond.
Further according to stage division of the present invention, wherein when the standard excess flow scope prestored during the excess flow that described flow detector detects is lower than control unit, described control unit controls the overflow shunt volume of described flow divider increase to described pump pond, utilize the increase of pump inlet pressure to improve the pump output of solid-liquid two-phase flow slurries to bucket type barrel, when the standard excess flow scope prestored during the excess flow that described flow detector detects is higher than control unit, described control unit controls the overflow shunt volume of described flow divider minimizing to described pump pond, utilize the reduction of pump inlet pressure to reduce the pump output of solid-liquid two-phase flow slurries to bucket type barrel, when the standard desilting concentration range prestored during the desilting concentration that described densimeter detects is lower than control unit, described control unit controls described speed change discharge apparatus and reduces desilting discharge rate, when the standard desilting concentration range prestored during the desilting concentration that described densimeter detects is higher than control unit, described control unit controls described speed change discharge apparatus and increases desilting discharge rate.
Further according to stage division of the present invention, wherein said control unit is connected to described pump, when the standard excess flow scope prestored during the excess flow that described flow detector detects is lower than control unit, described control unit controls the material pumping amount of described pump increase to bucket type barrel, when the standard excess flow scope prestored during the excess flow that described flow detector detects is higher than control unit, described control unit controls the material pumping amount of described pump minimizing to bucket type barrel.
Further according to stage division of the present invention, the central authorities of wherein said bucket type barrel are provided with material filling cylinder, and the material pumping outlet of described pump is connected to described material filling cylinder.
Further according to stage division of the present invention, wherein said flow divider comprises two discharging ports, one of them discharging port connects described pump pond, and another discharging port connects overflow drain road, provides fine fraction output of products by described overflow drain road; The outlet at bottom of described bucket type barrel is connected to the material inlet of described speed change discharge apparatus, the material outlet of described speed change discharge apparatus is connected to desilting discharge line, described desilting discharge line is provided with described densimeter, and provides coarse fraction output of products by described desilting discharge line.
Further according to stage division of the present invention, wherein said bucket type barrel is the hopper barrel structure of Upper cylindrical cylinder, lower cone cylinder, lower cone cylinder is connected with clear water supplementary units further, and described method also comprises the step of artificial supplementation clear water in described bucket type barrel.
At least following technique effect can be reached by technical scheme of the present invention:
1), the present invention introduces intelligent control technology first in solid-liquid two-phase flow slurries classification technique, Real-Time Monitoring based on overflow flow velocity and discharge concentration balances the cyclic process of slurries, achieve the classification by waiting reduction of speed degree to carry out solids, substantially increase classification quality, obtain the higher fine fraction product of classification quality and coarse fraction product, well meet user demand;
2), the present invention controls by control unit the Automatic Control that flow divider and/or pump speed achieve solid-liquid two-phase flow slurries class settling process automatically, substantially increase classification efficiency, wide popularization and application can be obtained, wide market in multiple industry fields such as environmental protection, mine, metallurgy, building materials, chemical industry.
Accompanying drawing explanation
Accompanying drawing 1 is the overall structure schematic diagram of solid-liquid grading plant of the present invention.
In figure, the implication of each Reference numeral is as follows:
1-bucket type barrel, 2-material filling cylinder, 3-overflow launder, 4-flow divider, 5-flow detector, 6-control unit, 7-speed change discharge apparatus, 8-densimeter, 9-pump, 10-pump pond, 11-clear water supplementary units.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail, to enable those skilled in the art understanding the present invention clearly, but does not therefore limit the scope of the invention.
The overall structure of solid-liquid grading plant of the present invention as shown in Figure 1, comprises bucket type barrel 1, overflow launder 3, flow divider 4, flow detector 5, control unit 6, speed change discharge apparatus 7, densimeter 8, pump 9, pump pond 10 and some connecting lines, connection line.Wherein said pump pond 10 is for storing solid-liquid two-phase flow slurries to be fractionated, as ore pulp, the entrance in described pump pond 10 is connected to charging gear by feed pipe, described pump 9 is placed in described pump pond 10, for the material pumping in pump pond 10 is exported, the pumping outlet of described pump 9 is connected to bucket type barrel 1 by feed pipe, described bucket type barrel 1 as shown in Figure 1, there is funnel-shaped structure, preferred described bucket type barrel 1 comprises cylindrical drum and the taper cone barrel of one connection, described cylindrical drum and taper cone barrel all adopt steel plate to make, and penetrating and its diameter equals the maximum gauge of taper cone barrel before and after described cylindrical drum, the bottom end opening of cylindrical drum is integrally connected to the open top of taper cone barrel, overall formation funnel-shaped structure, the structure of certain described bucket type barrel 1 is not as limit, as long as have funnel-form sedimentation structure, said structure belongs to preferred structure.The central authorities of the preferred cylindrical drum at described bucket type barrel 1 are provided with material filling cylinder 2 further, the cylindrical drum that the front and back that described material filling cylinder 2 also can be a minor diameter are penetrating, and described material is annotated, cylinder 2 is arranged in the cylindrical drum of bucket type barrel 1 along the central axis of the cylindrical drum of bucket type barrel 1, the outlet of the feed pipe of described pump 9 is connected to described material filling cylinder 2, thus be directly injected into the middle part of bucket type barrel 1 by material filling cylinder 2 by the solid-liquid two-phase flow slurries that pump 9 provides, more be convenient to fine particle stage material to overflow and the downward sedimentation of coarse fraction, as shown in fig. 1 by means of arrows, described material filling cylinder 2 is fixedly connected on the cylindrical drum inwall of bucket type barrel 1.Certain introducing above-mentioned material filling cylinder 2 is to better realize material filling, but is not therefore limited, and that is can select not arrange material filling cylinder 2, also can in the middle part of the cylindrical drum that bucket type barrel 1 is aimed in the outlet being now connected to the feed pipe of described pump 9.Overflow launder 3 is formed in the periphery of the Upper cylindrical cylinder of described bucket type barrel 1, described overflow launder 3 is formed as annular groove-shaped structure around the cylindrical drum periphery of bucket type barrel 1, enters the material in bucket type barrel 1 through the open top rim overflow of its cylindrical drum to enter in described overflow launder 3.Further on described overflow launder 3, (preferably on the overflow outlet of overflow launder) is provided with flow detector 5, described flow detector 5 can be real-time monitoring overflow enter slurry flow in overflow launder and in the unit interval, overflow enters the slurries amount in overflow launder, preferred described flow detector can adopt the flowmeter of existing arbitrary form, as the flowmeter based on supersonic liquid level, the monitoring to excess flow is realized by the liquid level change of unit interval in monitoring overflow launder, also microwave can be adopted, electromagnetic wave flowmeter etc., described flow detector 5 excess flow of monitoring can the rising overflow flow velocity of slurries in accurate response slurries classification process.The output signal end of described flow detector 5 is connected to control unit 6.The bottom of described overflow launder 3 is connected to flow divider 4 charging port by overflow passage, described flow divider 4 preferably Electrocontrolled tee valve, comprise a charging port, two discharging ports and a control signal end, the load of wherein said two discharging ports can control based on the automatically controlled signal of control signal end input, first discharging port of described flow divider 4 is connected to the entrance in pump pond 10 by feed back pipe, second discharging port of described flow divider 4 provides overflow material to export by overflow drain road, the control signal end of described flow divider 4 by connection in control unit 6, described control unit 6 controls the load of flow divider two discharging ports by providing control signal to flow divider, therefore the inventory of flow divider inflow pump pond 10 and overflow output can be controlled by described control unit 6.The cone bottom outlet of the taper cone barrel of described bucket type barrel 1 is connected to the material inlet of speed change discharge apparatus 7, described speed change discharge apparatus 7 is electrically connected at described control unit 6, and the control signal provided based on control unit controls the coarse grain footpath desilting inventory of discharging through the taper cone barrel outlet at bottom of bucket type barrel, the material outlet of described speed change discharge apparatus 7 is connected to desilting discharge line, the desilting material discharge rate of bucket type barrel can be controlled dynamically by described speed change discharge apparatus 7, at the material outlet of described speed change discharge apparatus 7, the desilting discharge line that preferred material outlet connects is provided with densimeter 8, the desilting material concentration that described densimeter 8 is discharged through speed change discharge apparatus 7 for Real-Time Monitoring, described densimeter is electrically connected at described control unit 6 simultaneously, and by monitored discharge material concentration values real-time Transmission to control unit 6, thus make described control unit 6 can control the work of associated components based on desilting discharge concentration.Preferably non-essential, the taper cone barrel sidewall of described bucket type barrel 1 can introduce clear water supplementary units 11, by the described clear water supplementary units 11 clear water amount that manually adjustment is supplementary, strengthening classification and desliming effect.Preferably non-essential, described control unit 6 is electrically connected at described pump, can control the pump speed parameter of described pump where necessary, to balance material turnover amount based on the monitoring numerical value of flow detector and/or densimeter.Described control unit can adopt existing electronic automatic controller, if any the proportional controller of signal input and output, preferably adopt the electronic automatic controller be made up of SIEMENS PLC Programmable Logic Controller further, for controlling relevant technological parameters, comprising memory, comparator and MCU, prestore canonical parameter, and control relevant device by the contrast of actual measurement parameter and canonical parameter, optimum balance state is in make class settling process, realize constant speed class settling, excess flow scope and the standard discharge concentration range of standard is prestored in described control unit at least, when the excess flow that flow monitoring instrument 5 monitors input departs from critical field, to described flow divider, pumps etc. export corresponding control signal, with BALANCE amount, when the discharge deviation of concentration critical field of described densimeter monitoring input, to described speed change discharge apparatus export for control signal to balance load.Described speed change discharge apparatus 7 preferably comprises screw pump and frequency-variable electronic device speed regulator, the densimeter that described densimeter is preferably made up of gamma ray density meter.
Below the method utilizing described solid-liquid grading plant to carry out the classification of solid-liquid two-phase flow slurries is described in detail, specifically comprises the following steps:
Step one, complete preliminary preparation, comprise and provide solid-liquid two-phase flow slurries by feed pipe to pump pond 10, and start pump 9 and provide a point stage material to bucket type barrel 1, start control unit 6 simultaneously, flow detector 5, flow divider 4, the relevant devices such as speed change discharge apparatus 7 and densimeter, after solid-liquid two-phase flow serum materials enters bucket type barrel 1, solids in slurries are due to particle diameter, the difference of proportion etc. starts classification of sedimentation, wherein fine particle stage material finally outwards exports fine fraction overflow product (overflow) through overflow launder to overflow, the downward sedimentation of coarse fraction material also exports coarse fraction sedimentation product (desilting) eventually through speed change discharge apparatus.
Step 2, stablize the rising excess flow of bucket type barrel.For ensureing, according to waiting reduction of speed degree classification of sedimentation to go out fine fraction product and coarse fraction product, to need rising flooding velocity and the sinking speed of slurries in Real-Time Monitoring bucket type barrel 1, and balance both keeping.First the rising excess flow in bucket type barrel is stabilized within the scope of standard constant, concrete by described flow detector 5, flow divider 4(and/or pump 9) and control unit 6 form rising excess flow control unit, in order to adjustment and stable overflow size separation granularity, because when the excess flow that rises in bucket type barrel 1 is accelerated, the granularity of classification is thicker, and when rising excess flow is slack-off, partition size is thinner, by adjustment excess flow with regard to adjustable partition size, stablize overflow flow velocity and just can stablize partition size, therefore supporting above-mentioned rising excess flow control unit, when flow detector wherein detects that the excess flow entered in overflow launder diminishes, show that bucket type barrel rising flooding velocity declines, downward sedimentation is accelerated, need to increase the inlet amount in bucket type barrel, the signal that flow detector 5 detects exports control unit 6 to and processes, the excess flow scope of standard is prestored in described control unit, when the excess flow that flow detector detects is lower than critical field, the flow that described control unit controls the solid-liquid two-phase flow slurries entered in bucket type barrel increases, this control mode preferably realizes by the shunt volume of increase flow divider 4 to pump pond, flow divider 4 described above has two discharging ports, respectively by return duct and overflow drain road outputting material, wherein return duct is connected to pump pond, therefore control unit exports control signal to flow divider, control the shunt volume (overflow discharge rate correspondence reduce) of flow divider increase to pump pond return duct, described pump is arranged in pump pond, in the normal pump speeds range of operation of pump, pump speed output flow is improved by the liquid level increased in the inlet pressure of pump and pump pond, therefore when increasing flow divider to shunt volume in pump pond, liquid level in pump pond is caused to raise, and then the pump discharge of pump 9 strengthens, the mass flow be pumped to like this in bucket type barrel will increase, the excess flow of bucket type barrel is caused to increase, excess flow is made to get back within the scope of established standards value, therefore the rising overflow flow velocity of scoop device is stabilized, stabilize partition size.With should flow detector wherein detect that entering excess flow in overflow launder becomes large time, show that bucket type barrel rising flooding velocity is very fast, constant speed sedimentation is slower, need the appropriate inlet amount reducing bucket type barrel, the signal that flow detector 5 detects exports control unit 6 to and processes, described control unit is by comparing to determine the excess flow of flow detector detection higher than critical field, the flow that need control the solid-liquid two-phase flow slurries entered in bucket type barrel reduces, now described control unit exports control signal to flow divider, control the shunt volume (overflow discharge rate correspondence increase) of flow divider minimizing to pump pond return duct, liquid level in pump pond is caused to decline, and then the pump discharge of pump will reduce in pump pond, the mass flow be pumped to like this in bucket type barrel will reduce, the excess flow of bucket type barrel is caused to reduce, excess flow is made to get back within the scope of established standards value, therefore the rising overflow flow velocity of scoop device is stabilized, stabilize partition size.In most cases, by controlling flow divider to the slurry diversion amount in pump pond, utilize liquid level change in pump pond to cause pump inlet pressure to change, and then cause the change of pump discharge effectively can balance the change of rising excess flow, be stabilized in constant critical field.Preferably also balance rising overflow flow velocity by the pump speed of control pump further, namely as shown in dotted line in accompanying drawing 1, control unit is electrically connected at pump further, when the excess flow that flow detector 5 detects is lower than critical field, control unit exports the control signal improving pump speed to described pump, when the excess flow that flow detector 5 detects is higher than critical field, control unit exports the control signal reducing pump speed to described pump, thus by the constant range of the above-mentioned overflow flow speed stability of bucket type barrel.Mode pump speed and flow divider shunt volume preferably can being taked simultaneously to control to combine further carrys out stable rising overflow flow velocity, and therefore the present invention is not limited.By stable rising overflow flow velocity and Absorbable organic halogens ascending water speed, thus stabilize partition size, ensure that classification quality and efficiency.
Step 3, the desilting discharge concentration of bucket type barrel stablized.For ensureing, according to waiting reduction of speed degree classification of sedimentation to go out fine fraction product and coarse fraction product, except the rising overflow flow velocity needing stable slurry, also to need the desilting discharge concentration after stable slurry sedimentation.Concrete by speed change discharge apparatus 7, densimeter 8 and control unit composition desilting discharge concentration control unit, to detect in real time based on discharge concentration and by discharge concentration stabilize in critical field, concrete densimeter detects the concentration of the desilting material of the speed change discharge apparatus discharge of installing through bucket type barrel desilting exhaust end in real time, and by detected desilting concentration real-time Transmission to control unit, the desilting concentration range of standard is prestored in described control unit, when the desilting concentration receiving densimeter detection exceeds the critical field wherein prestored, described control unit exports control signal to speed change discharge apparatus, the discharge velocity controlling described speed change discharge apparatus increases, with the increase balance desilting discharge concentration by withdrawal rate, when the critical field prestored during the desilting concentration that densimeter detects is lower than control unit, described control unit exports control signal to speed change discharge apparatus, the discharge velocity controlling described speed change discharge apparatus reduces, to improve desilting concentration by the reduction of withdrawal rate.By this Concentration Testing FEEDBACK CONTROL, by the desilting discharge concentration stabilize of bucket type barrel in critical field.
The present invention utilizes bucket type barrel to carry out the classification of sedimentation of solid-liquid two-phase flow slurries, based on the difference of solid matter particle diameter and proportion, gravitational settling is utilized to realize the high-quality classification of fine fraction product and coarse fraction product, wherein fine fraction product rises overflow in bucket type barrel, the sedimentation in bucket type barrel of coarse fraction product is discharged, rising excess flow to bucket type barrel and the desilting discharge concentration of the present invention's innovation have carried out real-time detection, and based on the inlet amount of detection signal FEEDBACK CONTROL bucket type barrel and withdrawal rate, the rising excess flow of bucket type barrel and desilting discharge concentration are stabilized in default critical field all dynamically, ensure that constant speed classification of sedimentation, and final classification goes out high-quality fine fraction product and coarse fraction product, substantially increase classification quality, simultaneously based on the Electric automatic control of control unit, achieve the full-automation of two phase flow slurries class settling process, substantially increase classification efficiency, scheme of the present invention can be widely used in environmental protection, mine, metallurgical, building materials, solid-liquid stock grading in multiple industry field such as chemical industry, there are wide market prospects.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-mentioned preferred embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (9)
1. a solid-liquid grading plant, it is characterized in that, comprise: bucket type barrel, overflow unit, material supply unit, material deliverying unit, rising excess flow control unit and desilting discharge concentration control unit, described overflow unit is arranged at the open top periphery of bucket type barrel, for providing fine fraction overflow output of products, described material supply unit is connected to the top entry of bucket type barrel, for providing solid-liquid two-phase flow slurries to be fractionated to bucket type barrel, described material deliverying unit is arranged at the outlet at bottom of bucket type barrel, for providing coarse fraction desilting output of products, described rising excess flow control unit by constant for the excess flow of bucket type barrel in critical field, the desilting constant concentration that bucket type barrel is discharged by described desilting discharge concentration control unit is in critical field.
2. solid-liquid grading plant according to claim 1, is characterized in that, described overflow unit comprises the overflow launder (3) being arranged at bucket type barrel open top periphery, and the bottom of described overflow launder is connected with overflow drainage line; Described material supply unit comprises pump pond (10), pump (9) and pump tubing length, and described pump (9) is arranged in pump pond (10), and is pumped in bucket type barrel by the solid-liquid two-phase flow slurries in pump pond (10) by pump tubing length; Described material deliverying unit includes speed change discharge apparatus, and the material inlet of described speed change discharge apparatus is connected to the outlet at bottom of bucket type barrel, and the material outlet of described speed change discharge apparatus connects desilting discharge line.
3. solid-liquid grading plant according to claim 2, it is characterized in that, described overflow launder is provided with flow detector (5), described desilting discharge line is provided with densimeter (8), described overflow drainage line is provided with flow divider (4), described flow divider (4) comprises two discharging ports, first discharging port is connected to described pump pond (10) by overflowing back pipe material, second discharging port connects overflow drain road, fine fraction overflow output of products is provided by described overflow drain road, also include control unit (6), described control unit (6) is connected to described flow detector (5), densimeter (8), speed change discharge apparatus (7) and flow divider (4), and in described control unit, prestore excess flow scope and the desilting concentration range of standard.
4. solid-liquid grading plant according to claim 3, it is characterized in that, described rising excess flow control unit comprises described flow detector (5), flow divider (4) and control unit (6), when flow detector (5) detect enter overflow launder excess flow lower than control unit in prestore standard excess flow scope time, described control unit controls the overflow shunt volume of described flow divider (4) increase to described pump pond, when described flow detector (5) detect enter overflow launder excess flow higher than control unit in prestore standard excess flow scope time, described control unit controls the overflow shunt volume of described flow divider (4) minimizing to described pump pond, described desilting discharge concentration control unit comprises described densimeter (8), speed change discharge apparatus (7) and control unit (6), when described densimeter detect through desilting discharge line discharge desilting concentration lower than control unit in prestore standard desilting concentration range time, described control unit controls described speed change discharge apparatus and reduces desilting discharge rate, when described densimeter detects during the desilting concentration of discharging through desilting discharge line is higher than control unit the standard desilting concentration range prestored, described control unit controls described speed change discharge apparatus and increases desilting discharge rate.
5. solid-liquid grading plant according to claim 4, it is characterized in that, described control unit is connected to described pump, when described flow detector (5) detect enter overflow launder excess flow lower than control unit in prestore standard excess flow scope time, described control unit controls described pump increases pump speed, when described flow detector (5) detect enter overflow launder excess flow higher than control unit in prestore standard excess flow scope time, described control unit control described pump reduce pump speed.
6. the solid-liquid grading plant according to any one of claim 2-5, it is characterized in that, described bucket type barrel is Upper cylindrical cylinder, the barrel of funnel structure of lower cone cylinder, and the bottom end opening of cylindrical drum is integrally connected to the open top of taper cone barrel, the center of inside of described cylindrical drum is provided with material filling cylinder (2), the outlet of described pump tubing length is connected to the open top of material filling cylinder (2), the cone bottom outlet of described taper cone barrel is connected to the material inlet of described speed change discharge apparatus, described overflow launder (3) is formed as annular groove-shaped structure around the open top periphery of described cylindrical drum.
7. solid-liquid grading plant according to claim 6, is characterized in that, also includes clear water supplementary units, and described clear water supplementary units is connected to the taper cone barrel sidewall of described bucket type barrel (1).
8. the solid-liquid grading plant according to any one of claim 3-7, it is characterized in that, described control unit comprises input/output module, memory, comparator and MCU, described input/output module, memory and comparator are connected to described MCU.
9. the solid-liquid grading plant according to any one of claim 3-8, it is characterized in that, described flow divider (4) is Electrocontrolled tee valve, described flow detector is supersonic liquid level flowmeter, microwave meter or electromagnetic wave flowmeter, described speed change discharge apparatus (7) comprises screw pump and frequency-variable electronic device speed regulator, described densimeter is the densimeter be made up of gamma ray density meter, and described control unit is the electronic automatic controller adopting SIEMENS PLC Programmable Logic Controller composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410646044.1A CN104475230B (en) | 2014-11-15 | 2014-11-15 | Solid-liquid grading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410646044.1A CN104475230B (en) | 2014-11-15 | 2014-11-15 | Solid-liquid grading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104475230A true CN104475230A (en) | 2015-04-01 |
| CN104475230B CN104475230B (en) | 2017-01-11 |
Family
ID=52749910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410646044.1A Active CN104475230B (en) | 2014-11-15 | 2014-11-15 | Solid-liquid grading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104475230B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383073A (en) * | 2016-09-21 | 2017-02-08 | 迈安德集团有限公司 | Method for carrying out automatic grading of micro sized materials by experimental system |
| CN106391292A (en) * | 2016-10-31 | 2017-02-15 | 中国矿业大学 | Liquid-solid fluidized bed sorting machine and material sorting method employing same |
| CN106680160A (en) * | 2017-02-28 | 2017-05-17 | 广西大学 | Continuous hydraulic analyzer adopting flow rising method and analysis method thereof |
| CN110420748A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of ternary precursor |
| CN110420749A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of silicon and silicon carbide |
| CN110420750A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of silicon carbide |
| CN110420751A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of aluminium hydroxide |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4119532A (en) * | 1976-09-10 | 1978-10-10 | Park Moon C | Beneficiation method |
| JP2001232233A (en) * | 2000-02-21 | 2001-08-28 | Putsumaisutaa Japan Kk | Treatment apparatus for unhardened concrete sludge |
| CN2782219Y (en) * | 2004-12-24 | 2006-05-24 | 化学工业部连云港设计研究院 | Hydraulic power separator |
| CN1876241A (en) * | 2005-06-10 | 2006-12-13 | 吕宪俊 | Highly effective concentration technology for milltailings |
| CN103331205A (en) * | 2013-06-04 | 2013-10-02 | 广西华锡集团股份有限公司 | Fuzzy closed circuit self-turning dynamic hydraulic cyclone classifier |
-
2014
- 2014-11-15 CN CN201410646044.1A patent/CN104475230B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4119532A (en) * | 1976-09-10 | 1978-10-10 | Park Moon C | Beneficiation method |
| JP2001232233A (en) * | 2000-02-21 | 2001-08-28 | Putsumaisutaa Japan Kk | Treatment apparatus for unhardened concrete sludge |
| CN2782219Y (en) * | 2004-12-24 | 2006-05-24 | 化学工业部连云港设计研究院 | Hydraulic power separator |
| CN1876241A (en) * | 2005-06-10 | 2006-12-13 | 吕宪俊 | Highly effective concentration technology for milltailings |
| CN103331205A (en) * | 2013-06-04 | 2013-10-02 | 广西华锡集团股份有限公司 | Fuzzy closed circuit self-turning dynamic hydraulic cyclone classifier |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383073A (en) * | 2016-09-21 | 2017-02-08 | 迈安德集团有限公司 | Method for carrying out automatic grading of micro sized materials by experimental system |
| CN106391292A (en) * | 2016-10-31 | 2017-02-15 | 中国矿业大学 | Liquid-solid fluidized bed sorting machine and material sorting method employing same |
| CN106680160A (en) * | 2017-02-28 | 2017-05-17 | 广西大学 | Continuous hydraulic analyzer adopting flow rising method and analysis method thereof |
| CN106680160B (en) * | 2017-02-28 | 2023-10-20 | 广西大学 | Continuous hydraulic analyzer adopting updraft method and analysis method thereof |
| CN110420748A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of ternary precursor |
| CN110420749A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of silicon and silicon carbide |
| CN110420750A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of silicon carbide |
| CN110420751A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of aluminium hydroxide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104475230B (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104475230B (en) | Solid-liquid grading device | |
| CN104475228B (en) | Grading method for solid-liquid two-phase flow size | |
| CN203830127U (en) | Closed type automatic control system for ore grinding classification | |
| CN104907158B (en) | Intelligent separation of coarse slime machine | |
| RU2182045C2 (en) | METHOD OF DETERMINATION OF MASS DENSITY OF SUSPENSION VOLUME FLOW IN PLANT FOR CONCENTRATION OF ORES OR MINERALS (Versions) AND METHOD OF DETERMINATION OF MASS FLOWS FLOWING ON SIDE ON INLET AND FROM SIDE OF OVERFLOW OF HYDROCYCLONE IN PLANT FOR GRINDING AND CLASSIFYING WITH HELP OF HYDROCYCLONES | |
| Arterburn | The sizing and selection of hydrocyclones | |
| CN207521145U (en) | Coal synthesis sorting assembly line | |
| CN107520042A (en) | A kind of separation system and sorting process of spodumene raw ore dense media | |
| CN204338304U (en) | A kind of solid-liquid grading plant | |
| CN207169977U (en) | A kind of separation system of spodumene raw ore dense media | |
| CN1962072A (en) | Closed circuit grinding classification system consisting of cyclone and grate discharge ball mill | |
| CN103175710B (en) | Continuous grit chamber sampler | |
| CN204699815U (en) | A kind of mine tailing discharge mechanism of separation of coarse slime machine | |
| CN107876207A (en) | A kind of separation of coarse slime tail ore deposit quantifies and the system and method for continuous pulp discharge | |
| CN211871891U (en) | Production equipment for converting pipe coal slurry into gasified coal water slurry | |
| CN208711923U (en) | A kind of eddy flow subparticle sorting unit of adjustable granularity | |
| CN216894514U (en) | Tailing graded recombination reconstructed slurry cementing filling equipment | |
| CN215087953U (en) | Intelligent coal dressing density device | |
| CN104874472A (en) | Automatic separating device for fine-sized slime in tailings conveying manifolds | |
| CN104511346A (en) | Ball milling apparatus | |
| CN208711962U (en) | Laboratory movable small hydrocyclone | |
| CN210965492U (en) | Novel coarse slime sorting machine | |
| CN204620181U (en) | Fine fraction sludge automatic separating apparatus in the defeated tail supervisor of mine tailing | |
| CN113304877A (en) | Three-product dense medium cyclone two-section separation density and pressure online regulation and control method | |
| CN200974038Y (en) | Hydrocyclone - lattice ball mill type graded closed circuit mine-grinding system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |