CN101843993B - On-line weighing and sensing method for regulating and controlling bottom flow of solid-liquid separation box hopper device - Google Patents
On-line weighing and sensing method for regulating and controlling bottom flow of solid-liquid separation box hopper device Download PDFInfo
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- CN101843993B CN101843993B CN2010101991713A CN201010199171A CN101843993B CN 101843993 B CN101843993 B CN 101843993B CN 2010101991713 A CN2010101991713 A CN 2010101991713A CN 201010199171 A CN201010199171 A CN 201010199171A CN 101843993 B CN101843993 B CN 101843993B
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Abstract
The invention discloses an on-line weighing and sensing method for regulating and controlling bottom flow of a solid-liquid separation box hopper device, and relates to the on-line weighing and sensing method for regulating and controlling the bottom flow of the solid-liquid separation box hopper devices for normal thickening, clarifying, grading and desliming and thickening, clarifying, grading and desliming of a tilting plate. A weighing sensor is arranged in a supporting leg, bracket or special weighing leg of the solid-liquid separation box hopper; a real-time weight signal delta G weighed by the weighing sensor and the total weight G of the entire solid-liquid separation box hopper are in monotone increasing or decreasing relationship; the weight signal delta G is direct response for the quantitative change of the object in the box hopper; and based on the real-time weight signal delta G weighed by the weighing sensor, the discharge capacity and the concentration of the bottom flow of the solid-liquid separation box hopper are timely and accurately controlled.
Description
Technical field
Patent of the present invention relates to the online weighing method for sensing that a kind of, clarification dense to routine, classification, desliming and Separation of Solid and Liquid hopper equipment such as swash plate is dense, clarification, classification, desliming carry out the underflow regulation and control, belongs to technical fields such as mineral processing and sewage disposal.
Background technology
Separation of Solid and Liquid hopper formula equipment behind slip entering hopper, be slipped to the discharge of underflow floss hole after solid grain major part wherein is deposited in hopper inwall (formation deposit), and the liquid of clarification is discharged by the overflow launder on hopper top, thus the realization Separation of Solid and Liquid.The primary condition of Separation of Solid and Liquid operation process direct motion mainly is to feed solid material amount and discharge solid material amount maintenance dynamic equilibrium, in the commercial production, feeds solid material amount in continuous fluctuation, if the untimely regulation and control of underflow discharge capacity can cause underflow density unstable.If feed the excessive untimely again adjustment underflow discharge capacity of solid material amount amplification, in addition can cause underflow to stop up and hopper in pernicious heap ore deposit (deposit is too much), thereby and destroyed the dynamic equilibrium of operation can not direct motion, even hopper is silted up.
In the practice,, also there is not a kind of detection method to reflect at present because of cause the long-pending constantly situation of variation of solid stockpile in the hopper to the ore deposit fluctuation comprehensively and exactly.Control to underflow density; Except that main dependence manual observation experience; Also have six kinds of instrument detecting densimeters commonly used such as ray type, ultrasonic type, differential static pressure (barrier film pressure reduction) formula, differential submergence float-type, induction and oscillatory type, underflow density is regulated and control or regulation and controlling of information is provided, existing division is following: the ray type densimeter places outside the underflow delivery pipe usually; Through ray pass tested ore pulp and be absorbed the back strength retrogression degree measure underflow density; Require measured pipeline must be full of ore pulp, and deposition, layering, bubble etc. can not be arranged, otherwise inaccurate.Be that with the weak point of ray type densimeter regulation and control Separation of Solid and Liquid hopper underflow density it can not reflect sedimentary accumulation situation in the hopper comprehensively and truly; Can only detect the concentration of underflow pipe partly; And the concentration of underflow pipe discharging some in particular cases with hopper in sedimentary accumulation do not have direct relation; Can create a false impression, and ray is harmful; The ultrasonic type densimeter is processed according to the variation principle relevant with pulp density that ultrasonic wave passes the ore pulp front and back sound intensity, the velocity of sound, acoustic impedance, and the method for its detection underflow density and points for attention and ray densimeter are similar, and just harmless, price is lower.The differential densimeter of barrier film is processed with the principle that its density and ore pulp post height are directly proportional according to the ore pulp static pressure.Be full of on the pipeline of ore pulp, respectively pacifying a pressure chamber at a distance of the H distance, the indoor diaphragm of rubber that is equipped with of pressure separates clear water and mobile at a slow speed ore pulp, passes to clear water to the ore pulp static pressure at this place simultaneously.The pressure differential and the pulp density of two pressure chambers are directly proportional.This pressure differential available head transmitter is measured.This densimeter is simple in structure, and cost is low, but volume is big, and precision is low.Ore pulp can layering in the Separation of Solid and Liquid hopper, and sediment is deposited in headwall, and the concentration of ore pulp layer each point that is exactly same horizontal plane is all inequality, and therefore, the differential densimeter of barrier film can not react sedimentary accumulation situation in the hopper comprehensively and truly.Differential submergence float-type densimeter is processed according to Archimedes principle.The float that suspention two volumes differ in size on two arms of balance is immersed in the ore pulp, when a certain normal concentration, makes the balance balance through counterweight.When pulp density changed, two suffered different buoyancy of float made the unbalance inclination of balance, and change in concentration is big more, and gradient is big more.Change the inclination size into the signal of telecommunication with sensors such as differential converters, the variation of indication pulp density.The precision of this densimeter is not high, and is subject to multiple factor ten and disturbs.Because of ore pulp layering in the Separation of Solid and Liquid hopper, sediment is deposited in the hopper inwall disorderly and with constantly variation of underflow discharging, situation is very complicated, and the float-type densimeter can only reflect very limited localized variation, and deposit collapses and waits and can produce serious interference to it.Induction densimeter is mainly used in the density that detects magnetic heavy suspension.Instrument is made up of measuring tube, electromagnetic induction coil and conversion display part.When magnetic material content in the tested suspension changes, cause that induced-current changes in the induction coil, and then can converse the variation of suspension concentration.Induction densimeter can only detect the density of magnetic thing heavy suspension, and is invalid to conventional ore pulp.When the oscillatory type densimeter was crossed the measuring tube that is vibrating according to flow of slurry, the horizontal free running frequency of pipe changed the principle that changes with pulp density and processes.Though its sensitivity is very high, measuring tube receives the ore pulp serious wear, and the instrument price is more expensive, is used for coal industry more.The oscillatory type densimeter also can only detect localized variation in the hopper.
In sum, the method that is used for Separation of Solid and Liquid hopper underflow regulation and control at present all can not be reacted the quantitative change situation of hopper content comprehensively and truly.
Summary of the invention
The present invention provides a kind of online weighing method for sensing that Separation of Solid and Liquid hopper equipment carries out the underflow regulation and control that is used for, and is intended to break the Separation of Solid and Liquid hopper and controls the deficiency that the detection mode of underflow exists at present.
The object of the invention is realized through following technical scheme:
A kind of online weighing method for sensing that is used for regulating and controlling bottom flow of solid-liquid separation box hopper device; The supporting leg, LOAD CELLS and the underflow valve that mainly comprise Separation of Solid and Liquid hopper, hopper; Characteristic is: LOAD CELLS places in the supporting leg of Separation of Solid and Liquid hopper; The relation that the real-time weight signal Δ G that is weighed up by this LOAD CELLS and the gross weight G of whole Separation of Solid and Liquid hopper are monotonic increase or successively decrease, the real-time weight signal Δ G that weighs up according to this LOAD CELLS regulates and control the underflow discharge capacity and the concentration of Separation of Solid and Liquid hopper.
The present invention adopts the weight that takes by weighing hopper to reflect the quantitative change situation of hopper content; The Separation of Solid and Liquid hopper is when handling slip; Consolidating in the slip contains species fixes, and it is constant promptly to contain thing density admittedly, if the weight change of hopper content; Just explanation has been given quantitative change change that consolidating in the slip contain thing and has been caused that variation has taken place sedimental amount in the hopper, and its underflow discharge capacity just should respective change; Underflow density is with discharge capacity generation respective change.No matter how complicated the Separation of Solid and Liquid process is in the hopper; All can not change this objective parameter of weight of its content, can draw the reason that whether deposit changes in the Separation of Solid and Liquid hopper information is in time regulated and control underflow with the method for weighing and sensing comprehensively and exactly thereby Here it is.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Each member label is among the figure: the supporting leg of 1-Separation of Solid and Liquid hopper, 2-hopper, 3-LOAD CELLS, 4-underflow valve.
The specific embodiment
Below in conjunction with embodiment the present invention is made further detailed description.
As shown in Figure 1; The present invention proposes a kind of online weighing method for sensing that is used for regulating and controlling bottom flow of solid-liquid separation box hopper device simply, directly, accurately; Obtain the whether accurate signal of quantitative change of deposit in the Separation of Solid and Liquid hopper, and the underflow discharge capacity and the concentration of Separation of Solid and Liquid hopper equipment are carried out real-time monitoring with this real-time weight signal Δ G.LOAD CELLS 3 is installed in a supporting leg 2 of Separation of Solid and Liquid hopper 1; The weight signal Δ G that weighs up by this LOAD CELLS whether direct reaction of quantitative change of deposit in the hopper 1 just; If Δ G value is increasing; Explain that containing substrate concentration deposit in increase causes hopper to consolidating of slip increases, should increase the underflow discharge capacity this moment, and vice versa.Δ G is numerically much smaller than the gross weight G of whole hopper, but the Changing Pattern of Δ G and G is identical.Therefore, with Δ G the underflow amount being controlled is in time and accurately.
The supporting leg of above-mentioned hopper also can be support or the ad hoc leg of weighing.
The Separation of Solid and Liquid hopper that said Separation of Solid and Liquid hopper comprises conventional dense, clarification, classification, desliming and swash plate is dense, clarification, classification, desliming are used.
This technical scheme reflects in the hopper whether quantitative change of deposit through the weight that takes by weighing the Separation of Solid and Liquid hopper.LOAD CELLS is placed in the supporting leg of hopper (also can be in the support or the ad hoc leg of weighing); The weight signal Δ G that is weighed up by this LOAD CELLS and the gross weight G of whole hopper are monotonic increase and the relation of successively decreasing; Therefore can judge that sedimental amount is to increase or reduce in the hopper according to the weight signal Δ G of this LOAD CELLS transmission, and in view of the above underflow regulated and control.The method of this weighing and sensing can in time be grasped sedimental quantitative changeization in the hopper again exactly, thereby can regulate and control underflow timely and accurately.This LOAD CELLS weighs the monotonic relationshi of gross weight G of Δ G and hopper content by the related experiment gained, and experimental data sees the following form:
Annotate: the initialization value of LOAD CELLS is 500kg
Concrete application example
The molybdenum concntrate lamella thickener in certain copper molybdenum ore dressing plant can be managed in Sichuan, is that 10 tons LOAD CELLS places in the leg of weighing ad hoc on the hopper support with range of weighing, and its weight signal that weighs up is as the foundation of control underflow.Weighing-up wave with LOAD CELLS when oblique plate closed box is filled water is initialized as 0 ton.Oblique plate closed box carries the miner when doing, and the weight signal G of its content accurately is reacted among the output signal delta G of LOAD CELLS.The output signal delta G of LOAD CELLS shows 2 tons～4 ton hours, and oblique plate closed box bucket underflow discharges smooth and easy and underflow density reaches 50～55%, meets consumers' demand; The output signal delta G of LOAD CELLS shows that less than 2 ton hours oblique plate closed box bucket underflow discharge capacity increases and underflow density reduces, and this moment, the operator suitably turned the open degree of underflow valve down according to this signal; The output signal delta G of LOAD CELLS shows that oblique plate closed box bucket underflow discharge capacity reduces and underflow density increases greater than 4 ton hours, and this moment, the operator suitably transferred the open degree of underflow valve big according to this signal; The output signal delta G of LOAD CELLS shows greater than 6 ton hours, the very high danger that obstruction underflow row mouth is arranged of oblique plate closed box bucket underflow concentration of emission, and the alarm that connects LOAD CELLS output signal this moment sends sound and light signal; The output signal delta G of LOAD CELLS shows greater than 9 ton hours; The content weight of oblique plate closed box bucket has exceeded the maximum load-carrying capacity of equipment; Oblique plate closed box bucket and support have the danger of damage, and the alarm that connects LOAD CELLS output signal this moment sends sound and light signal.
Claims (4)
1. the method for discharging with LOAD CELLS observing and controlling Separation of Solid and Liquid hopper underflow; Supporting leg, LOAD CELLS and the underflow valve of Separation of Solid and Liquid hopper, hopper have been used; It is characterized in that: LOAD CELLS places in the supporting leg of Separation of Solid and Liquid hopper; The relation that the real-time weight signal Δ G that is weighed up by this LOAD CELLS and the gross weight G of whole Separation of Solid and Liquid hopper are monotonic increase or successively decrease, the real-time weight signal Δ G that weighs up according to this LOAD CELLS regulates and control the underflow discharge capacity and the concentration of Separation of Solid and Liquid hopper.
2. method according to claim 1 is characterized in that: the supporting leg of said Separation of Solid and Liquid hopper is a support.
3. method according to claim 1 is characterized in that: the supporting leg of said Separation of Solid and Liquid hopper is the ad hoc leg of weighing.
4. method according to claim 1 is characterized in that: the Separation of Solid and Liquid hopper that said Separation of Solid and Liquid hopper comprises conventional dense, clarification, classification, desliming and swash plate is dense, clarification, classification, desliming are used.
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| CN2010101991713A CN101843993B (en) | 2010-06-12 | 2010-06-12 | On-line weighing and sensing method for regulating and controlling bottom flow of solid-liquid separation box hopper device |
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| CN2010101991713A CN101843993B (en) | 2010-06-12 | 2010-06-12 | On-line weighing and sensing method for regulating and controlling bottom flow of solid-liquid separation box hopper device |
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| CN101843993B true CN101843993B (en) | 2012-04-18 |
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| CN102228750B (en) * | 2011-05-24 | 2013-08-21 | 云南科力新材料有限公司 | Efficient tilting plate thickener |
| CN102410865B (en) * | 2011-12-03 | 2014-05-14 | 栾川龙宇钼业有限公司 | Continuously accumulative measuring device and method for mass of solid elements in solid-liquid incompatible fluid |
| CN108328360A (en) * | 2018-04-15 | 2018-07-27 | 山东固润工程技术有限公司 | The discharging warehousing and transportation facilities and conveyer method of loose unpacked material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1554465A (en) * | 2003-12-24 | 2004-12-15 | 陕西省血液中心 | Cold precipitation preparing instrument |
| CN101234265A (en) * | 2008-03-10 | 2008-08-06 | 赵晓晔 | Oil tank dewatering device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1554465A (en) * | 2003-12-24 | 2004-12-15 | 陕西省血液中心 | Cold precipitation preparing instrument |
| CN101234265A (en) * | 2008-03-10 | 2008-08-06 | 赵晓晔 | Oil tank dewatering device |
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Owner name: YUNNAN KELI NEW MATERIAL CO., LTD. Free format text: FORMER OWNER: KUNMING YEYAN NEW MATERIAL CO. LTD. Effective date: 20150723 |
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Address after: 650021 No. 86 Yuantong North Road, Kunming City, Yunnan Province Patentee after: Yunnan Keli environmental protection Co., Ltd Address before: 650031 No. 86 Yuantong North Road, Yunnan, Kunming Patentee before: YUNNAN KEENLY NEW MATERIAL Co.,Ltd. |
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