CN102590025A - Method and device for detecting shatter value change curve of material bed layer of jigger - Google Patents
Method and device for detecting shatter value change curve of material bed layer of jigger Download PDFInfo
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- CN102590025A CN102590025A CN2012100369445A CN201210036944A CN102590025A CN 102590025 A CN102590025 A CN 102590025A CN 2012100369445 A CN2012100369445 A CN 2012100369445A CN 201210036944 A CN201210036944 A CN 201210036944A CN 102590025 A CN102590025 A CN 102590025A
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Abstract
The invention relates to a method and a device for detecting a shatter value change curve of a material bed layer of a jigger, belonging to the technical field of material bed layer detection of mineral coal preparation. The technical scheme provided by the invention is as follows: the method comprises the following steps of: firstly, enabling a spherical body to periodically enter and exist from different bed layers of pulsating materials along the height direction; secondly, acquiring a buoyancy signal of the spherical body when being positioned in a suspension state in the pulsating material bed layer and feeding the buoyancy signal into a data processor; and thirdly, carrying out data processing by the data processor and drawing a pressure change curve of a pressure value P corresponding to the buoyancy signal in the whole process of falling from a maximum value to a minimum value, wherein the pressure change curve is the shatter value change curve of the material bed layer. The method and the device disclosed by the invention have the benefits that the shatter value change curve of the material bed layer is detected timely and accurately; and the shatter value of the material bed layer is facilitated to be stabilized within a suitable range and the coal preparation process of the jigger is stabilized by adopting technical means.
Description
Technical field
The present invention relates to a kind of jig material porocity of jig bed change curve detection method and device, belong to mine coal separation material bed detection technique field.
Background technology
Jig is a kind of traditional coal separation equipment.Work ultimate principle: under the jig and system combined effect thereof of trough body structure, have in the jig cell body of sieve plate and produce fluctuating flow.After mineral material such as coal added, along with fluctuating flow fluctuates up and down, the material that density is bigger sank near washbox screenplate than the bottom; The light material that density is lower is distributed in than top.Sinking near sieve plate has certain thickness heavy material than the bottom, is commonly called jigging material bed (abbreviation bed).With the sieve plate is benchmark, and the upwardly extending height of bed is called thickness of bed layer; Because whole material bed along with fluctuating flow fluctuates up and down, material particles periodically takes place thrown and fall after rise, thereby cause material particles periodically to be separated from each other and compress.Material particles is separated from each other, and the material bed is in the suspending liquid state.At present; It all is to detect around thickness of bed layer that ragging detects, through appropriate design with the on-the-spot adjustment of certain experience is arranged, the free style buoy can be suspended in the bed position close with its relative density usually; Utilize displacement transducer to detect the buoy height again; Through links such as signal Processing, export to control gears such as discharge, reach observing and controlling purpose to thickness of bed layer.The problem that exists: the free style buoy can detect more stable thickness of bed layer and variation in thickness, can not detect the periodically separated bed separation degree with compaction process and degree of material particles.And, do not see application, even the research that detects for the bed separation degree and discuss all very rare for the detection of bed separation degree.At present, the technology of jigging coal industry known is: in the coal jigging process, pulsing material bedly is allocated on the washbox screenplate along short transverse by the density size.Low more apart from sieve plate, material bed average density is big more; High more apart from sieve plate, material bed average density is more little.
After jig got into normal operating conditions, jigging material bed periodically got into (with withdrawing from) suspending liquid state.In the material bed suspending liquid unit volume of the jigging of suspending liquid state, the shared volume of solid material is called the solid-liquid suspension ratio with the ratio of solidliquid mixture cumulative volume.The particle degree of being separated from each other is porocity of jig bed λ=1-Vd/V.Vd/V is the solid-liquid suspension ratio.The material particles that the porocity of jig bed numerical values recited can be weighed the suspending liquid state is separated from each other degree.Porocity of jig bed λ numerical value is big more, and solid material particle is few more in the suspending liquid unit volume, and it is big more that particle is separated from each other degree; Otherwise λ numerical value is more little, and it is more little that particle is separated from each other degree.The jigging practice shows: particle is separated from each other degree (porocity of jig bed) and should be controlled in the proper range.Porocity of jig bed is bigger than normal, two results can occur: 1, jig passes through sieve seriously, and cleaned coal (good coal) product passes through the sieve loss to be increased, and brings economic loss to production; 2, fine grain heavy density material is held up excessively by force, is doped in the jigging head coal product, pollutes head coal product and causes product quality defective.Porocity of jig bed is on the low side, and jigging material bed is sent out extremely, and the material particles degree of layering reduces even no longer layering, also often causes two results: 1, the excessive cleaned coal (good coal) of taking away of heavy material discharging; 2, heavy material pollutes head coal product, causes product quality defective.Therefore, in time detecting the porocity of jig bed change curve, and take certain technological means to make porocity of jig bed stable within limits, reach the purpose of further stablizing jig coal separation process, is the technical matters that this area needs to be resolved hurrily.
Summary of the invention
The object of the invention provides a kind of jig material porocity of jig bed change curve detection method and device; In time, accurately detect the porocity of jig bed change curve; Help taking certain technological means; Porocity of jig bed is stablized within limits, stablized jig coal separation process, solve the problems referred to above that exist in the background technology.
Technical scheme of the present invention is:
A kind of jig material porocity of jig bed change curve detection method comprises following processing step: spheroidite is periodically got into and the different beds that withdraw from the pulsation material along short transverse; 2. gather spheroidite buoyancy signal during suffered suspending liquid state in pulsation material bed, send into data processor; 3. data processor carries out data processing, and with the pairing pressure value P of buoyancy signal, the whole process that drops into minimum value from maximal value is depicted a pressure history, and this pressure history is exactly the porocity of jig bed change curve.
Detect the porocity of jig bed change curve; Can be respectively or combine spheroidite position, position of living in, spheroidite in pulsation material bed to get into and withdraw from three factors of jigging cycle of pulsation material cycle, jigging material bed simultaneously, draw the porocity of jig bed change curve.
1, combines spheroidite position, position of living in pulsation material bed separately, draw the material bed porocity of jig bed change curve of different pulsation; Concrete steps: gather the signal of spheroidite present position in pulsation material bed simultaneously, send into data processor; Spheroidite is the buoyancy signal during suffered suspending liquid state in pulsation material bed; The signal numerical value of binding site signal transducer; Draw the material bed porocity of jig bed change curve of different pulsation; Spheroidite successively scans in the pulsation bed of material, draws the material bed porocity of jig bed change curve of different pulsation.
2, the jigging cycle that combines jigging material bed separately draws the material bed porocity of jig bed change curve of the different pulsation of each jigging cycle; Concrete steps: data processor is on program setting; Set the jigging cycle of jigging material bed; According to spheroidite buoyancy signal during suffered suspending liquid state in pulsation material bed, draw the material bed porocity of jig bed change curves of the different pulsation of each jigging cycle.
3, combine spheroidite to get into and withdraw from the jigging cycle of pulsation material and jigging material bed, draw periodic porocity of jig bed change curve; Spheroidite periodically along short transverse from enter into withdraw from fully the pulsation material bed, accomplish a scan period Tj successively, material particles periodically is separated from each other and compresses the jigging cycle Tt that overall process is a jigging material bed, Tj is greater than Tt; Concrete steps: data processor is on program setting, and Tj comprises several Tt, and each jigging cycle Tt detects one should cycle shatter value change curve.For example: Tj is set at 60 seconds, and Tt is set at 1 second; Tj=60S, the insertion duration is 30S, so, inserts omnidistance just the detection at one and obtains 30 shatter value change curve λ t1-30, by preceding surface analysis, insertion process must reduce to λ t30 from λ t1 gradually; Equally, spheroidite is extracted whole process and also can be detected and obtain 30 shatter value change curve λ t1-30, must increase gradually to λ t30 from λ t1.Periodically to withdraw from pulsation fully material bed from entering into along short transverse for spheroidite, and positive revesal can be set unequal, and the quantity of the shatter value change curve λ t that positive revesal obtains also just can be different.
The described spheroidite that makes periodically gets into and the different beds that withdraw from the pulsation material along short transverse, adopts driving mechanism to drive spheroidite, in pulsation material bed, back and forth successively inserts and withdraws from.
Said driving mechanism drives spheroidite through reciprocating mechanism, in pulsation material bed, back and forth successively inserts and withdraws from, and the tension and compression pressure transducer is gathered spheroidite buoyancy signal during suffered suspending liquid state in pulsation material bed, sends into data processor; Angular displacement sensor is gathered the signal of spheroidite present position in pulsation material bed simultaneously, sends into data processor.
The pairing pressure value P of buoyancy signal, and the relational expression between the porocity of jig bed λ: λ=1-(P/ V
Q-δ
Water)/(δ
0-δ
Water); δ
0>(P/ V
Q)>δ
WaterIn conjunction with the mode that successively scans porocity of jig bed change curve λ t; Make spheroidite periodically material bed along short transverse entering pulsation; By formula principle draws the same material bed porocity of jig bed change curve λ t of different cycles, and with the delta data of each material bed porocity of jig bed change curve λ t of one-period; In the formula: the λ porocity of jig bed; The pairing force value of P buoyancy signal; V
QThe volume of spheroidite; δ
WaterThe pulsation water-mass density; δ
0The material particles average density; λ t porocity of jig bed change curve, V
Q, δ
Water, δ
0Be known numeric value.
Bed from top to bottom, δ
0Scope is 1.4---2.2 (g/cm
2) between.
Obtained porocity of jig bed change curve λ t, can export control signal, adjustment drives the blast of jig pulsation water; Porocity of jig bed change curve λ t is skew upwards, then reduces the blast of jig pulsation water; Otherwise, then strengthen blast.The blast that adjustment drives jig pulsation water is the technique known means.
Theoretical foundation of the present invention: the object of deriving certain volume by the pressure principle is when jigging material bed is in the suspending liquid state, and the object of certain volume receives between buoyancy and the porocity of jig bed of bed has certain corresponding relation.The spheroidite Q that is in certain volume in the jig bed receives the encirclement of bed material particles D and pulsation water on every side.The suffered buoyancy of spheroidite equals the product of spheroidite volume bed suspending liquid of living in it average density.
Formula 1:P=V
Qδ
h
P: the suffered buoyancy of spheroidite;
V
Q: the spheroidite volume;
δ
h: material bed suspending liquid average density;
Formula 2: δ
h=M/V
V: suspension vol;
M: the suspending liquid gross mass of volume V;
Formula 3:M=Vd δ
0+ (V-Vd) δ
Water
Vd: material particles volume summation in the suspending liquid of volume V;
δ
0: the material particles average density;
δ
Water: the pulsation water-mass density;
Formula 4:P=V
Q［ Vd δ
0+ (V-Vd) δ
Water］/V
Formula 4-1:P=［ Vd/V (δ
0-δ
Water)+δ
WaterV
Q
The ratio of the shared solidliquid mixture of solid material is Vd/V
Porocity of jig bed: formula 5: λ=1-Vd/V
In conjunction with formula 4-1 and formula 5, arrangement obtains suspending liquid porocity of jig bed and the suffered buoyancy relational expression of spheroidite:
Formula 6: λ=1-(P/ V
Q-δ
Water)/(δ
0-δ
Water); δ
0>(P/ V
Q)>δ
Water
V
Q, δ
WaterKnown; Bed is δ from top to bottom
0Scope is 1.4---2.2 (g/cm
2) between
λ: porocity of jig bed;
P: the suffered buoyancy of spheroidite;
V
Q: the spheroidite volume;
δ
Water: the pulsation water-mass density;
δ
0: the material particles average density;
The conclusion that draws according to formula 6: measure spheroidite suffered buoyancy when the bed particle is in the suspending liquid state; And combine the bed particle average density of spheroidite in certain position height, just can draw the porocity of jig bed of certain density layer when the bed particle is in the suspending liquid state.
Because whole material bed along with fluctuating flow fluctuates up and down, material particles periodically takes place thrown and fall after rise, thereby cause material particles periodically to be separated from each other and compress.Material particles is separated from each other, and the material bed is in the suspending liquid state.Each, material particles was thrown certain amplitude by the bath of going up of certain intensity cycle of fluctuation, and spheroidite removes the buoyancy P when receiving the bed particle and being in the suspending liquid state in the bed fluctuation
Q, also receive certain intensity go up bath throw impulsive force Pt.The stressed maximal value that must be spheroidite in the bed fluctuation that this throws impulsive force; And the bed particle to give the buoyancy of spheroidite when being in the suspending liquid state must be to follow hard on to occur immediately after throwing impulsive force; After detecting the stressed maximal value Pt of spheroidite; Buoyancy when the pressure value P that obtains subsequently just equals to receive the bed particle and is in the suspending liquid state; This pressure value P is a transient change value, and P can depict a pressure curve from the whole process that maximum drops into minimum value, and this pressure curve is exactly porocity of jig bed change curve λ t.Porocity of jig bed change curve λ t has described the bed separation degree and has changed.
Because after jig gets into operate as normal, the material bed is by Density Distribution, pulses material bedly to be allocated on the washbox screenplate along short transverse by the density size.Low more apart from sieve plate, material bed average density is big more; High more apart from sieve plate, material bed average density is more little.Pulsing material bedly is allocated on the washbox screenplate along short transverse by the density size, does not represent and can accurately confirm the material bed concrete numerical value of density that distributes along the bed height direction of pulsation.For eliminating the influence of this X factor; Take successively to scan the mode of porocity of jig bed change curve λ t; Make spheroidite periodically material bed along short transverse entering pulsation; By formula reach P that principle draws the same density material layer of different cycles drops into the whole process of minimum value from maximal value a pressure curve---porocity of jig bed change curve λ t, and with the delta data of each density material layer porocity of jig bed change curve λ t of one-period.
A kind of jig material porocity of jig bed change curve pick-up unit; Comprise driving mechanism, spheroidite, tension and compression pressure transducer, angular displacement sensor, data processor and reciprocating mechanism; Reciprocating mechanism is made up of ball handle, conduction lever, actuating arm, auxiliary rod, bracing frame; The end of ball handle is connected with spheroidite, and the ball handle is hinged on respectively on conduction lever and the auxiliary rod, is hinged on the bracing frame respectively on conduction lever and the auxiliary rod; Actuating arm one end connects the conduction lever; The other end is connected with driving mechanism, and tension and compression pressure transducer and angular displacement sensor are arranged on the reciprocating mechanism, and the output of tension and compression pressure transducer and angular displacement sensor is connected with data processor; Driving mechanism drives spheroidite through reciprocating mechanism, in pulsation material bed, back and forth successively inserts and withdraws from, and the tension and compression pressure transducer is gathered spheroidite buoyancy signal during suffered suspending liquid state in pulsation material bed, sends into data processor; Angular displacement sensor is gathered the signal of spheroidite present position in pulsation material bed simultaneously, sends into data processor; Data processor carries out data processing; With the pairing pressure value P of buoyancy signal; The whole process that drops into minimum value from maximum is depicted a pressure curve, and this pressure curve is exactly the porocity of jig bed change curve, the signal numerical value of binding site signal transducer; Draw the material bed porocity of jig bed change curve of the same pulsation of different cycles, reach the porocity of jig bed change curve of respectively pulsing material bed with one-period.
The buoyancy that spheroidite receives in the material bed conducts to the tension and compression pressure transducer through lever principle, gathers the buoyancy signal that spheroidite receives in the material bed; The tension and compression pressure transducer is arranged on the actuating arm.The tension and compression pressure transducer also can be installed in an other side of conduction lever, installs with ball handle homonymy, directly conducts the buoyancy signal that spheroidite receives in the material bed.
Good effect of the present invention: in time, accurately detect the porocity of jig bed change curve, help taking certain technological means, porocity of jig bed is stabilized within the optimum range, stablize jig coal separation process.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention synoptic diagram;
Accompanying drawing 2 is embodiment of the invention schematic side view;
Among the figure: 1, driving mechanism; 2, spheroidite; 3, tension and compression pressure transducer; 4, angular displacement sensor; 5, data processor; 6, ball handle; 7, coupling sleeve; 8, revolving shaft; 9, back shaft and axle bed; 10, conduction lever; 11, pressure transducer hitch; 12, actuating arm; 13, bracing frame; 14, driving shaft; 15, displacement transducer conductive bar; 16, take bar; 17, connection seat; 18, displacement transducer mount pad; 19, auxiliary rod; 20, jigging body; CH, material bed.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further through embodiment.
In an embodiment, receive the driving mechanism 1 of setting program control drive spheroidite 2 along bed of material layer height CH direction from top to bottom (revesal from bottom to top) continue back and forth insertion (withdrawing from) bed successively.Spheroidite 2 receives the encirclement of material particles on every side after getting into material bed CH, and the buoyancy P when receiving bed and being in the suspending liquid state
QAnd certain intensity go up bath throw impulsive force Pt.Be provided with tension and compression pressure transducer 3, it is stressed to measure 2 of spheroidites; Being provided with angular displacement sensor 4 provides spheroidite 2 at material bed CH height and position of living in.
Because whole material bed along with fluctuating flow fluctuates up and down, material particles periodically takes place thrown and fall after rise, thereby cause material particles periodically to be separated from each other and compress.Material particles is separated from each other, and the material bed is in the suspending liquid state.Each, material particles was thrown certain amplitude by the bath of going up of certain intensity cycle of fluctuation, and spheroidite removes the buoyancy when receiving the bed particle and being in the suspending liquid state in the bed fluctuation, also receive certain intensity go up bath throw impulsive force Pt.The stressed maximal value that must be spheroidite in the bed fluctuation that this throws impulsive force; And the bed particle to give the buoyancy of spheroidite when being in the suspending liquid state must be to follow hard on to occur immediately after throwing impulsive force; After detecting the stressed maximal value Pt of spheroidite; Buoyancy when the pressure value P that obtains just equals to receive the bed particle and is in the suspending liquid state; This pressure value P is a transient change value, and P can depict a pressure curve from the whole process that maximum drops into minimum value, and this pressure curve is exactly porocity of jig bed change curve λ t.Porocity of jig bed change curve λ t has described the bed separation degree and has changed.
Because after jig gets into operate as normal, the material bed is by Density Distribution, pulses material bedly to be allocated on the washbox screenplate along short transverse by the density size.Low more apart from sieve plate, material bed average density is big more; High more apart from sieve plate, material bed average density is more little.Pulsing material bedly is allocated on the washbox screenplate along short transverse by the density size, does not represent and can accurately confirm the material bed concrete numerical value of density that distributes along the bed height direction of pulsation.For eliminating the influence of this X factor; Take successively to scan the mode of porocity of jig bed change curve λ t; Make spheroidite periodically material bed along short transverse entering pulsation; By formula principle draws the porocity of jig bed change curve λ t of the same density material layer of different cycles, and with the delta data of each density material layer porocity of jig bed change curve λ t of one-period.
The device course of work of the present invention: driving mechanism 1 is given driving force on the conduction lever 10 that is supported on back shaft and axle bed 9 supports through driving shaft 14, actuating arm 12, pressure transducer hitch 11 and 3 conduction of tension and compression pressure transducer; Through lever principle motoricity is conducted to the revolving shaft 8 and the coupling sleeve 7 that are installed in conduction lever 10 opposite sides; Coupling sleeve 7 links with ball handle 6, and ball handle 6 lower ends connect spheroidite 2.Driving mechanism 1 is pressed setting program and is done along to-and-fro movement counterclockwise, and the spheroidite 2 in material bed CH pumps.Be installed in coupling sleeve 7 other ends and also have an auxiliary rod 19, auxiliary rod 19 has the supporting construction with revolving shaft 8, back shaft and axle bed 9 identical functions, guarantees to move and normally carries out.Angular displacement sensor 4 utilizes mount pad 18 to be installed on the bracing frame 13; Displacement transducer conductive bar 15 on the revolving shaft of angular displacement sensor 4 rides over an end of bar 16; The other end of taking bar 16 is connected on the revolving shaft 8; When coupling sleeve 7 pumped, respective change took place in angular displacement sensor 4 detection signals thereupon.Driving mechanism 1 utilizes connection seat 17 to be installed on the bracing frame 13; Back shaft and axle bed 9 are installed on the bracing frame 13; Bracing frame 13 is installed on the jigging body 20.The buoyancy that spheroidite 2 receives in material bed CH conducts to tension and compression pressure transducer 3 through lever principle, gathers the buoyancy signal that spheroidite 2 receives in material bed CH.Certainly, also can tension and compression pressure transducer 3 be installed in an other side of conduction lever 10---install with coupling sleeve 7 and ball handle 6 homonymies, directly conduct the buoyancy signal that spheroidite 2 receives in material bed CH.Tension and compression pressure transducer 3 and angular displacement sensor 4 electric signal are sent into data processor 5.After the electric signal of tension and compression pressure transducer 3 and the collection of 4 multicycles of angular displacement sensor is sent into data processor 5 treated calculating; By formula principle draws the same material bed porocity of jig bed change curve λ t of different cycles, and with the delta data of each material bed porocity of jig bed change curve λ t of one-period.The pulsation water and the ragging control system that can be used for jig.Conventional jig is windy cell structure, general configurable many cover porocity of jig bed pick-up units on a jig.
Claims (10)
1. a jig material porocity of jig bed change curve detection method is characterized in that comprising following processing step: spheroidite is periodically got into and the different beds that withdraw from the pulsation material along short transverse; 2. gather spheroidite buoyancy signal during suffered suspending liquid state in pulsation material bed, send into data processor; 3. data processor carries out data processing, and with the pairing pressure value P of buoyancy signal, the whole process that drops into minimum value from maximal value is depicted a pressure history, and this pressure history is exactly the porocity of jig bed change curve.
2. the jig material porocity of jig bed change curve detection method according to claim 1; It is characterized in that detecting the porocity of jig bed change curve; Combine spheroidite position, position of living in, spheroidite in pulsation material bed to get into and withdraw from three factors of jigging cycle of pulsation material cycle, jigging material bed respectively or simultaneously, draw the porocity of jig bed change curve.
3. the jig material porocity of jig bed change curve detection method according to claim 2 is characterized in that combining separately spheroidite position, position of living in pulsation material bed, draws the material bed porocity of jig bed change curve of different pulsation; Concrete steps: gather the signal of spheroidite present position in pulsation material bed simultaneously, send into data processor; Spheroidite is the buoyancy signal during suffered suspending liquid state in pulsation material bed; The signal numerical value of binding site signal transducer; Draw the material bed porocity of jig bed change curve of different pulsation; Spheroidite successively scans in the pulsation bed of material, draws the material bed porocity of jig bed change curve of different pulsation.
4. the jig material porocity of jig bed change curve detection method according to claim 2 is characterized in that combining separately the jigging cycle of jigging material bed, draws the material bed porocity of jig bed change curves of the different pulsation of each jigging cycle; Concrete steps: data processor is on program setting; Set the jigging cycle of jigging material bed; According to spheroidite buoyancy signal during suffered suspending liquid state in pulsation material bed, draw the material bed porocity of jig bed change curves of the different pulsation of each jigging cycle.
5. the jig material porocity of jig bed change curve detection method according to claim 2 is characterized in that combining spheroidite to get into and withdraw from the jigging cycle of pulsation material and jigging material bed, draws periodic porocity of jig bed change curve; Spheroidite periodically along short transverse from enter into withdraw from fully the pulsation material bed, accomplish a scan period Tj successively, material particles periodically is separated from each other and compresses the jigging cycle Tt that overall process is a jigging material bed, Tj is greater than Tt; Concrete steps: data processor is on program setting, and Tj comprises several Tt, and each jigging cycle Tt detects one should cycle shatter value change curve.
6. according to claim 1 or 2 said jig material porocity of jig bed change curve detection methods, it is characterized in that the pairing pressure value P of buoyancy signal, and the relational expression between the porocity of jig bed λ: λ=1-(P/ V
Q-δ
Water)/(δ
0-δ
Water); δ
0>(P/ V
Q)>δ
WaterIn conjunction with the mode that successively scans porocity of jig bed change curve λ t; Make spheroidite periodically material bed along short transverse entering pulsation; By formula principle draws the same material bed porocity of jig bed change curve λ t of different cycles, and with the delta data of each material bed porocity of jig bed change curve λ t of one-period; In the formula: the λ porocity of jig bed; The pairing force value of P buoyancy signal; V
QThe volume of spheroidite; δ
WaterThe pulsation water-mass density; δ
0The material particles average density; λ t porocity of jig bed change curve, V
Q, δ
Water, δ
0Be known numeric value.
7. the jig material porocity of jig bed change curve detection method according to claim 6 is characterized in that bed from top to bottom, δ
0Scope is 1.4---2.2 (g/cm
2) between.
8. jig material porocity of jig bed change curve pick-up unit; It is characterized in that comprising driving mechanism, spheroidite, tension and compression pressure transducer, angular displacement sensor, data processor and reciprocating mechanism; Reciprocating mechanism is made up of ball handle, conduction lever, actuating arm, auxiliary rod, bracing frame; The end of ball handle is connected with spheroidite, and the ball handle is hinged on respectively on conduction lever and the auxiliary rod, is hinged on the bracing frame respectively on conduction lever and the auxiliary rod; Actuating arm one end connects the conduction lever; The other end is connected with driving mechanism, and tension and compression pressure transducer and angular displacement sensor are arranged on the reciprocating mechanism, and the output of tension and compression pressure transducer and angular displacement sensor is connected with data processor; Driving mechanism drives spheroidite through reciprocating mechanism, in pulsation material bed, back and forth successively inserts and withdraws from, and the tension and compression pressure transducer is gathered spheroidite buoyancy signal during suffered suspending liquid state in pulsation material bed, sends into data processor; Angular displacement sensor is gathered the signal of spheroidite present position in pulsation material bed simultaneously, sends into data processor; Data processor carries out data processing; With the pairing pressure value P of buoyancy signal; The whole process that drops into minimum value from maximum is depicted a pressure curve, and this pressure curve is exactly the porocity of jig bed change curve, the signal numerical value of binding site signal transducer; Draw the material bed porocity of jig bed change curve of the same pulsation of different cycles, reach the porocity of jig bed change curve of respectively pulsing material bed with one-period.
9. said according to Claim 8 jig material porocity of jig bed change curve pick-up unit; It is characterized in that: the buoyancy that spheroidite receives in the material bed conducts to the tension and compression pressure transducer through lever principle, gathers the buoyancy signal that spheroidite receives in the material bed; The tension and compression pressure transducer is arranged on the actuating arm.
10. said according to Claim 8 jig material porocity of jig bed change curve pick-up unit; It is characterized in that: the buoyancy that spheroidite receives in the material bed conducts to the tension and compression pressure transducer through lever principle, gathers the buoyancy signal that spheroidite receives in the material bed; The tension and compression pressure transducer is installed in an other side of conduction lever, installs with ball handle homonymy, directly conducts the buoyancy signal that spheroidite receives in the material bed.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103048357A (en) * | 2012-12-17 | 2013-04-17 | 宁海县盛源激光科技有限公司 | Device for detecting layered condition of raw coal mixture |
| CN108776089A (en) * | 2018-04-10 | 2018-11-09 | 中国矿业大学 | Gas-solid fluidized bed middle moving particle dynamics data measuring device, system and method |
| CN114002110A (en) * | 2022-01-04 | 2022-02-01 | 中煤科工能源科技发展有限公司 | Device and method for monitoring material looseness of jigger |
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| CN103048357A (en) * | 2012-12-17 | 2013-04-17 | 宁海县盛源激光科技有限公司 | Device for detecting layered condition of raw coal mixture |
| CN108776089A (en) * | 2018-04-10 | 2018-11-09 | 中国矿业大学 | Gas-solid fluidized bed middle moving particle dynamics data measuring device, system and method |
| CN114002110A (en) * | 2022-01-04 | 2022-02-01 | 中煤科工能源科技发展有限公司 | Device and method for monitoring material looseness of jigger |
| CN114002110B (en) * | 2022-01-04 | 2022-11-15 | 中煤科工能源科技发展有限公司 | Device and method for monitoring material looseness of jigger |
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Application publication date: 20120718 |