CN109813629A - A kind of on-line period densitometer and its density measuring method - Google Patents
A kind of on-line period densitometer and its density measuring method Download PDFInfo
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- CN109813629A CN109813629A CN201711167857.2A CN201711167857A CN109813629A CN 109813629 A CN109813629 A CN 109813629A CN 201711167857 A CN201711167857 A CN 201711167857A CN 109813629 A CN109813629 A CN 109813629A
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- 238000000034 method Methods 0.000 title claims description 14
- 238000005303 weighing Methods 0.000 claims abstract description 58
- 238000005070 sampling Methods 0.000 claims abstract description 40
- 239000000523 sample Substances 0.000 claims abstract description 35
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
A kind of on-line period densitometer, the densitometer includes volumetric flask and take for protruding into ore pulp delivery duct the probe tube of slurry, ore pulp delivery duct is protruded into one end of probe tube, the other end of probe tube is arranged in the surface of volumetric flask and does not contact with volumetric flask, and the sampling valve convenient for taking slurry is equipped on probe tube；The volumetric flask bottom centre is equipped with blow-down pipe, and blow-down pipe is equipped with blow valve；The lower section of the volumetric flask is equipped with the online weighing instrument for ore pulp weighing in volumetric flask and volumetric flask.On-line period densitometer structure provided by the invention is simple and convenient to operate, and safe and reliable radiationless, and the pulp density especially suitable for ore pulp low-pressure delivery pipeline measures.
Description
Technical field
The present invention relates to a kind of pulp density measuring device, especially a kind of on-line period densitometer further relates to use it
The method for carrying out density measure.
Background technique
The existing country selects pulp density measurement in factory's ore pulp delivery duct to mostly use nuclear density gauge, and this method measures advantage
It is accurate for measurement density, but the equipment will form certain nuclear radiation, to selecting factory unmarried unfertilized operator and maintenance of equipment
Personnel's health exerts a certain influence, and gradiomanometer domestic at present is mounted on main pipeline more, and is responsible for
Road is because of pulp conveying pressure difference shakiness caused by pumping the reason of conveying preferably, and flow rate of pulp is excessively high in main pipeline, and pressure difference transmitter connects
Pipe damage is excessive between mouthful, therefore causes gradiomanometer deviation of reading larger and upper and lower fluctuation is serious.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of structure it is simple, it is radiationless,
Easy-operating on-line period densitometer.
There is provided use above-mentioned on-line period densitometer to carry out density for another technical problem to be solved by this invention
The method of measurement.
The technical problem to be solved by the present invention is to what is realized by technical solution below.The present invention is a kind of online
Sampling density meter, the densitometer include volumetric flask and take for protruding into ore pulp delivery duct the probe tube of slurry, probe tube
Ore pulp delivery duct is protruded into one end, and the other end of probe tube is arranged in the surface of volumetric flask and does not contact with volumetric flask, taking
Sample pipe is equipped with the sampling valve convenient for taking slurry；The volumetric flask bottom centre position is equipped with blow-down pipe, and blow-down pipe is equipped with emptying
Valve；The lower section of the volumetric flask is equipped with the online weighing instrument for ore pulp weighing in volumetric flask and volumetric flask.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The on-line period densitometer, the probe tube include tipping tube and vertical pipe, and it is defeated that the lower beveled end of tipping tube protrudes into ore pulp
Pipeline, upper beveled end is sent to be connected to vertical pipe, sampling valve is located on tipping tube and the tipping tube of vertical pipe connectivity part；Vertical pipe is perpendicular
To the surface that volumetric flask is arranged in.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The on-line period densitometer, the angle of the angle formed between the tipping tube and ore pulp delivery duct are 30 ° -60 °.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The on-line period densitometer, the outlet of the probe tube are in the shape of a trumpet.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The on-line period densitometer is additionally provided with the collecting tank convenient for ore pulp recycling, the bottom of collecting tank below the blow-down pipe
Equipped with the return pipe that ore pulp is back to pulp conveying pump inlet or pulp conveying pump pond.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The on-line period densitometer, is additionally provided with overflow pipe on the volumetric flask, the outlet of overflow pipe be arranged in collecting tank just on
Side, blow-down pipe do not contact with overflow pipe with collecting tank.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The on-line period densitometer, the sampling valve and blow valve are pneumatic plug valve.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The on-line period densitometer, the volumetric flask are equipped with conical bottom, and the online weighing instrument is equipped with the ring cooperated with conical bottom
Shape weighing sections, blow-down pipe are located on the center line of annular weighing sections and do not contact with annular weighing sections.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The on-line period densitometer, the densitometer further include outer computer, and outer computer is defeated for receiving online weighing instrument
Weighing-up wave out and the calculating for completing pulp density.
The technical problems to be solved by the invention can also be further realized by technical solution below, the invention discloses
A kind of measurement carrying out pulp density using on-line period densitometer described in above technical scheme, its step are as follows:
(1) before measuring, the weight of first weigh volumetric flask, overflow pipe, blow-down pipe and blow valve, and most by the weight and volumetric flask
Large Volume Data is arranged in outer computer；
(2) before starting sampling, guarantee that blow valve is in close state, then open sampling valve and start by out of ore pulp delivery duct
Sampling, when in volumetric flask ore pulp reach highest liquid level after close sampling valve；
(3) online weighing instrument weigh containing ore pulp to volumetric flask, and weighing data is transferred to outer computer, and outside calculates
Machine receives the weighing data of transmission, then subtracts weighing value obtained by step (1) using weighing data, resulting value is again divided by volumetric flask
Volumetric values obtain the density value of ore pulp；
(4) blow valve is opened, allows ore pulp in volumetric flask to flow back into process flow, blow valve is again switched off after the completion of emptying；
(5) it repeats the above steps and carries out multiple density measure, acquire more accurate pulp density value.
Compared with prior art, the present invention carries out sampling pulp from ore pulp delivery duct by probe tube, and by taking-up
Ore pulp is sent into volumetric flask, and then online weighing instrument weighs to the volumetric flask equipped with ore pulp, and the appearance stored before cooperating
The density value that the weight and volume numerical value of measuring bottle carry out ore pulp calculates；The ore pulp after weighing of every sub-sampling, in volumetric flask
It can be back at raw ore slurry output and be reused by collecting tank, avoid the waste of resource.The densitometer structure is simple,
Easy to operate and safe and reliable radiationless, the pulp density especially suitable for ore pulp low-pressure delivery pipeline measures.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is a kind of schematic diagram that the present invention is applied to vertical ore pulp delivery duct；
Fig. 3 is a kind of schematic diagram that the present invention is applied to horizontal pulp conveyance conduit.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, right below in conjunction with attached drawing of the present invention
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Referring to Fig.1-3, a kind of on-line period densitometer, the densitometer include volumetric flask 2 and for protruding into pulp conveying pipe
Road carries out the probe tube 1 of slurry sampling, and ore pulp delivery duct is protruded into one end of probe tube 1, and the other end setting of probe tube 1 is being held
It the surface of measuring bottle 2 and is not contacted with volumetric flask 2, the sampling valve 4 convenient for taking slurry is equipped on probe tube 1；2 bottom of volumetric flask
The center in portion is equipped with blow-down pipe 8, and blow-down pipe 8 is equipped with blow valve 9；The lower section of the volumetric flask 2 is equipped with for volumetric flask 2 and holds
The online weighing instrument 3 that ore pulp is weighed in measuring bottle 2.Probe tube 1 from ore pulp delivery duct for being sampled, and by the ore pulp of taking-up
It is sent into volumetric flask 2；Volumetric flask 2 samples ore pulp for containing, and weighs convenient for online weighing instrument 3, the ore pulp body of every sub-sampling
Product is the volume of volumetric flask 2, then subtracts the weight of volumetric flask 2 again divided by capacity using the gross weight of volumetric flask 2 and sampling ore pulp
The density of ore pulp can be obtained in 2 volumes of bottle；Sampling valve 4 is used to control the time of sampling；Blow-down pipe 8 is used for the cooperation of blow valve 9
The ore pulp of sampling is discharged after weighing；Probe tube 1 is not contacted with volumetric flask 2, and blow-down pipe 8 does not connect with online weighing instrument 3
Touching, and probe tube 1 outlet be higher than volumetric flask 2 highest liquid level, when avoiding filling ore pulp in volumetric flask 2, probe tube 1 with
Ore pulp is in contact, and online weighing instrument 3 is only contacted with volumetric flask 2, ensure that the accuracy of 3 weighing results of online weighing instrument；?
Line weighing instrument 3 can be online weighing machine in the prior art.
The probe tube 1 include tipping tube 5 and vertical pipe 6, the lower beveled end of tipping tube 5 protrude into ore pulp delivery duct, on
Beveled end is connected to vertical pipe 6, and sampling valve 4 is located on tipping tube 5 and the tipping tube 5 of 6 connectivity part of vertical pipe；Vertical pipe 6 is vertical
The surface of volumetric flask 2 is set.The angle of the angle formed between tipping tube 5 and ore pulp delivery duct is 30 ° -60 °；Inclination
The best angle of the angle formed between pipe 5 and ore pulp delivery duct is 45 °, and convenient for the sampling of ore pulp, while tipping tube 5 is set
After setting so that sampling, the ore pulp in tipping tube 5 can flow back into ore pulp delivery duct, and the setting of vertical pipe 6 is so that sampling
After, the ore pulp in vertical pipe 6 can entirely fall in volumetric flask 2, avoid ore pulp and deposition blocking occurs at sampling valve 4 now
As；On a vertical line, ore pulp is effectively guaranteed can be with for the center of the outlet of vertical pipe 6 and the center of 2 entrance of volumetric flask
It is evenly distributed in volumetric flask 2.
The outlet of the probe tube 1 is in the shape of a trumpet, is additionally provided in the outlet of bell mouth shape and steadily flows out convenient for ore pulp
Tapered cap 7 so that not splashed by the ore pulp smooth decreasing that probe tube 1 flows into volumetric flask 2, and can make in volumetric flask 2
Mineral pulp level uniformly rises as far as possible, guarantees that the weighing results of online weighing instrument 3 are more accurate.
The bottom of the collecting tank 11 that the lower section of the blow-down pipe 8 is additionally provided with convenient for ore pulp recycling, collecting tank 11 is equipped with mine
Slurry is back to the return pipe 12 of pulp conveying pump intake or pulp conveying pump pond.The setting of collecting tank 11 is convenient for claiming in sampling pulp
Terminate the ore pulp in volumetric flask 2 carrying out centralized collection again, is then back at pulp conveying and is able to again by return pipe 12
It uses, to economize on resources, avoids wasting.
Overflow pipe 10 is additionally provided on the volumetric flask 2, the top of collecting tank 11, blow-down pipe is arranged in the outlet of overflow pipe 10
8 do not contact with overflow pipe 10 with collecting tank 11, and 10 entrance of overflow pipe is lower than the least significant end that probe tube 1 exports, and avoid probe tube 1
Outlet end be in contact with the ore pulp in volumetric flask 2, to ensure that the accuracy of the weighing results of online weighing instrument 3；It overflows
The top of 2 highest liquid level of volumetric flask, 2 constant volume of guaranteed capacity bottle is arranged in flow tube 10, and extra ore pulp can pass through overflow pipe
10 outflows.
The collecting tank 11 is cone tank, guarantees that, when volumetric flask 2 is vented, ore pulp, which enters cone tank, will not occur to splash now
As.
The sampling valve 4 and blow valve 9 are pneumatic plug valve.Pneumatic plug valve operational motion is fast, can frequent operation, and
And long service life, it ensure that effective operation of the densitometer.
The volumetric flask 2 is equipped with conical bottom, and the online weighing instrument 3 is equipped with the annular weighing sections cooperated with conical bottom, puts
Blank pipe 8 is located on the center line of annular weighing sections and does not contact with annular weighing sections.Blow-down pipe 8 does not connect with online weighing instrument 3
Touching, blow-down pipe 8 are connected to 2 bottom centre of volumetric flask and pass through from the center line of annular weighing sections, not only facilitate emptying
The setting of pipe 8, and convenient for the emptying of ore pulp after weighing.
The densitometer further includes outer computer, outer computer be used to receive the output of online weighing instrument 3 weighing-up wave,
And complete the calculating of pulp density.When the maximum volume and volumetric flask 2 that outer computer has memory capacity bottle 2 are without ore pulp
Bare weight, and the calculating of the density by weighing-up wave progress ore pulp, it is specific to calculate are as follows: pulp density=(volumetric flask 2+ ore pulp is total
2 bare weight of weight-volumetric flask) 2 volume of/volumetric flask.
A kind of measurement method of on-line period density, its step are as follows:
(1) before measuring, the weight of first weigh volumetric flask 2, overflow pipe 10, blow-down pipe 8 and blow valve 9, and by the weight and capacity
The maximum capacity data of bottle 2 are arranged in outer computer；
(2) before starting sampling, guarantee that blow valve 9 is in close state, then open sampling valve 4 and start by from ore pulp delivery duct
Interior sampling closes sampling valve 4 after ore pulp reaches highest liquid level in volumetric flask 2；
(3) online weighing instrument 3 weigh containing ore pulp to volumetric flask 2, and weighing data is transferred to outer computer, outside meter
Calculation machine receives the weighing data of transmission, then subtracts weighing value obtained by step (1) using weighing data, resulting value is again divided by capacity
The volumetric values of bottle 2 obtain the density value of ore pulp；
(4) blow valve 9 is opened, allows ore pulp in volumetric flask 2 to flow back into process flow, blow valve 9 is again switched off after the completion of emptying；
(5) it repeats the above steps and carries out multiple density measure, acquire more accurate pulp density value.
The densitometer is applicable on the vertical pipeline 13 and horizontal pipe 14 of transfer ore pulp, while the densitometer is applicable in
Factory, troilite is selected to select factory, metallic ore that pulp density in factory's ore pulp delivery duct is selected to measure in phosphorus ore.
Some setting details of the invention are as follows, and probe tube, which tilts upward, to be arranged on low pressure ore pulp delivery duct, convenient
Ore particles can be passed straight back to ore pulp delivery duct when not sampling, and pneumatic plug valve is set on probe tube, is set after pneumatic plug valve
There is elbow straight down, has reduced deposition of the ore pulp after pneumatic plug valve to the greatest extent；Probe tube outlet uses tubaeform drain,
Ore pulp steadily flows out the fluctuation that do not splash, and minimize liquid level in volumetric flask when can guarantee sampling；Volumetric flask setting is sampling
It is not contacted completely immediately below pipe and with probe tube, and probe tube outlet is higher than volumetric flask highest liquid level；Overflow pipe setting is being held
Measuring bottle side, volumetric flask are equipped with conical bottom, set pneumatic plug valve below conical bottom, pneumatic plug valve divides into a bit of straight tube；Hold
Measuring bottle divides into annular online weighing instrument, there is enough space installed capacity bottles and blow-down pipe among online weighing instrument, blow-down pipe and
Pneumatic plug valve, volumetric flask side blow-down pipe thereon is not contacted with online weighing instrument side, prevents from influencing weighing results；Hold
Measuring bottle uses glass material as far as possible, can guarantee in vial after emptying do not deposit ore pulp in time, avoid influencing next measurement as far as possible
Quality；The lower section of the overflow pipe of volumetric flask side and the blow-down pipe of lower section is arranged in collecting tank, and guaranteed capacity bottle is vented Shi Bufa
Rawore starches splash phenomena；Collecting tank is equipped with return pipe, guarantees that ore pulp is reflowable and pumps pond or pulp conveying to pulp conveying and be pumped into
Mouth pipeline.
The present invention is applied in actual items, makes differential density measure instrument at first in Wengfu dressing plant before
Be mainly used for Tailings Slurry density measure, for instruct Tailings Slurry concentration export, scheme be: it is vertical in the underflow of concentrator
Double flanges differential pressure transmitter is mounted directly on main pipeline, the measurement distance between two flanges is 2m, and flow direction is from bottom to up, double
Flange band capillary differential pressure transmitter uses internationally renowned brand, but finds the program because of ore pulp after the application more than half a year
Flow velocity it is excessively high, flow velocity >=2.0m/s causes measured value unstable, fluctuate it is larger, undulating value is in 0.920-1.250t/m3Between
Constantly bounce, however normal density range should be: 1.090-1.170 t/m3, so obtained using the measurement scheme
Process measurements are to the Instructing manufacture of technique just without too big reference significance；Density measure is carried out using the present invention afterwards, is being dropped
After low flow velocity measured value also from original wide fluctuations become process measurements fluctuation it is smaller, specifically in decimal point second
Fluctuation, the process values measured are consistent with the artificial repeatedly value of sampling analysis, make to play guidance well to production
With.
Claims (10)
1. a kind of on-line period densitometer, it is characterised in that: the densitometer includes volumetric flask and for protruding into ore pulp delivery duct
Take the probe tube of slurry, ore pulp delivery duct is protruded into one end of probe tube, and volumetric flask is being arranged in just in the other end of probe tube
It top and is not contacted with volumetric flask, the sampling valve convenient for taking slurry is equipped on probe tube；The center of the volumetric flask bottom is equipped with
Blow-down pipe, blow-down pipe are equipped with blow valve；The lower section of the volumetric flask is equipped with for ore pulp weighing in volumetric flask and volumetric flask
Online weighing instrument.
2. on-line period densitometer according to claim 1, it is characterised in that: the probe tube includes tipping tube and vertical
Pipe, the lower beveled end of tipping tube protrudes into ore pulp delivery duct, upper beveled end is connected to vertical pipe, and sampling valve is located on tipping tube；
Vertical pipe is vertically provided at the surface of volumetric flask and does not contact with volumetric flask.
3. on-line period densitometer according to claim 2, it is characterised in that: the tipping tube and ore pulp delivery duct it
Between the angle of angle that is formed be 30 ° -60 °.
4. on-line period densitometer according to claim 1, it is characterised in that: the outlet of the probe tube is in horn mouth
Shape.
5. on-line period densitometer according to claim 1, it is characterised in that: be additionally provided with and be convenient for below the blow-down pipe
The collecting tank of ore pulp recycling, the bottom of collecting tank are equipped with time that ore pulp is back to pulp conveying pump inlet or pulp conveying pump pond
Flow tube.
6. on-line period densitometer according to claim 5, it is characterised in that: it is additionally provided with overflow pipe on the volumetric flask,
The top of collecting tank is arranged in the outlet of overflow pipe, and the blow-down pipe of volumetric flask does not contact with overflow pipe with collecting tank.
7. on-line period densitometer according to claim 1, it is characterised in that: the sampling valve and blow valve are pneumatic
Plug valve.
8. on-line period densitometer according to claim 1, it is characterised in that: the volumetric flask is equipped with conical bottom, described
Online weighing instrument is equipped with the annular weighing sections that cooperate with conical bottom, blow-down pipe be located on the center line of annular weighing sections and not with
Annular weighing sections contact.
9. on-line period densitometer according to claim 1, it is characterised in that: the densitometer further includes outer computer,
Outer computer is used to receive the weighing-up wave of online weighing instrument output and completes the calculating of pulp density.
10. a kind of measurement method of on-line period density, it is characterised in that: this method uses any one of claim 1-9 institute
The on-line period densitometer stated carries out the density measure of ore pulp, and its step are as follows:
(1) before measuring, the weight of first weigh volumetric flask, overflow pipe, blow-down pipe and blow valve, and most by the weight and volumetric flask
Large Volume Data is arranged in outer computer；
(2) before starting sampling, guarantee that blow valve is in close state, then open sampling valve and start by out of ore pulp delivery duct
Sampling, when in volumetric flask ore pulp reach highest liquid level after close sampling valve；
(3) online weighing instrument weigh containing ore pulp to volumetric flask, and weighing data is transferred to outer computer, and outside calculates
Machine receives the weighing data of transmission, then subtracts weighing value obtained by step (1) using weighing data, resulting value is again divided by volumetric flask
Volumetric values obtain the density value of ore pulp；
(4) blow valve is opened, allows ore pulp in volumetric flask to flow back into process flow, blow valve is again switched off after the completion of emptying；
(5) it repeats the above steps and carries out multiple density measure, acquire more accurate pulp density value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167857.2A CN109813629A (en) | 2017-11-21 | 2017-11-21 | A kind of on-line period densitometer and its density measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167857.2A CN109813629A (en) | 2017-11-21 | 2017-11-21 | A kind of on-line period densitometer and its density measuring method |
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| CN109813629A true CN109813629A (en) | 2019-05-28 |
Family
ID=66600540
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| CN201711167857.2A Pending CN109813629A (en) | 2017-11-21 | 2017-11-21 | A kind of on-line period densitometer and its density measuring method |
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| CN111735734A (en) * | 2020-07-30 | 2020-10-02 | 烟台金鹏矿业机械有限公司 | Intelligent carbon density appearance |
| WO2022088268A1 (en) * | 2020-11-02 | 2022-05-05 | 单县欣润化工有限公司 | Sampling device for finished product testing for production of 2-chloro-5-trifluoromethylpyridine |
| CN114486623A (en) * | 2022-01-19 | 2022-05-13 | 中国恩菲工程技术有限公司 | Density measuring device |
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Application publication date: 20190528 |