CN103495555B - A kind of concrete dry aggregate continuous multi-stage selection by winnowing classification case, Apparatus and system - Google Patents

A kind of concrete dry aggregate continuous multi-stage selection by winnowing classification case, Apparatus and system Download PDF

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CN103495555B
CN103495555B CN201310456698.3A CN201310456698A CN103495555B CN 103495555 B CN103495555 B CN 103495555B CN 201310456698 A CN201310456698 A CN 201310456698A CN 103495555 B CN103495555 B CN 103495555B
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selection
winnowing
classification case
aggregate
air
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CN103495555A (en
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王建军
彭训民
李兰儒
王红伟
吴善试
郭靖
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XINJIANG YUXIN CONCRETE Co Ltd
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XINJIANG YUXIN CONCRETE Co Ltd
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Abstract

The present invention discloses a kind of concrete dry aggregate continuous multi-stage selection by winnowing classification case, comprise casing, the inside of casing becomes upper selection by winnowing classification case and lower selection by winnowing classification case by baffle for separating, on dividing plate, corresponding multiple discharging opening is laid with multiple classification material mouth, and classification material mouth place is provided with the check valve opened towards lower selection by winnowing classification case.The present invention also discloses a kind of Apparatus and system adopting above-mentioned continuous multi-stage selection by winnowing classification case.The present invention can carry out multistage pneumatic separation classification to dry aggregate continuously, can concentrate the aggregate sorting certain grain-size grade scope, and removes earth and the stone flour of aggregate surface adhesion, separated aggregate is clean, can exempt washing and dehydration, shortened process, reduce costs, improve the concrete quality of finished product.Native system completes in airtight upper selection by winnowing classification case and lower selection by winnowing classification case, realizes without dust production operation.The present invention can also form circulating aidr bells blast system, reduces energy consumption, finally reaches the object of energy-saving low-carbon environmental protection.

Description

A kind of concrete dry aggregate continuous multi-stage selection by winnowing classification case, Apparatus and system
Technical field
The present invention relates to industrial production every profession and trade drying solid material and sort classification field, classification case, the Apparatus and system of particularly a kind of concrete dry aggregate selection by winnowing classification.
Background technology
At concrete production field, country advocates the concrete production technology of high-quality, high-quality, low cost energetically, thus reaches energy-saving and cost-reducing object.And country also encourages environmental protection, energy-saving production energetically, makes every effort to enhance productivity, reduce production cost, reduce man-made noise, reduce dust pollution, improve haze weather.
Current industrial circle every profession and trade major part still adopts traditional vibratory sieve to carry out classification to dried material and sorts.Especially, in commerical ready-mixed concrete configuration is produced, the overwhelming majority utilizes vibratory sieve to carry out classification choosing to aggregates such as sand, stone and mineral additives.Because this screening mode carries out particle diameter according to the sieve aperture of vibratory sieve to sort, can only obtain limited required kind, hierarchical level is lower, can not meet commerical ready-mixed concrete high-quality, high-level production technology far away to the requirement of different aggregate size grating.Moreover, owing to being inherently entrained with dust in natural sand, stone or the aggregate such as Machine-made Sand, stone, earth etc. affect the harmful components of concrete quality, vibratory sieve is utilized to sort the aggregates such as sand, building stones and mineral additive, larger dust pollution will inevitably be brought, effectively can not slough sand, the surperficial earth, stone flour etc. adhered to of stone.
Because vibratory sieve screening is once difficult to realize multistagely sort classification, its production efficiency is low, and kind is single.In order to meet concrete production configuration technological requirement, having to carry out secondary and sorting classification, this just needs input human and material resources and vehicle to carry out Secondary Transport, will inevitably improve the production cost of aggregate, that is improve the production cost of commerical ready-mixed concrete.
In order to solve the problem, generally adopt concrete dry aggregate selection by winnowing hierarchy system at present.As shown in Figure 1 to Figure 3, this selection by winnowing hierarchy system mainly comprise accept successively air blast 1a, selection by winnowing classification case 2a, cyclonic filter equipment 3a and control of dust filter plant 4a.The top tank wall of selection by winnowing classification case 2a has charging aperture, the under casing wall of selection by winnowing classification case 2a has multiple discharging opening, each discharging opening respectively correspondence is provided with rewinding storehouse 21a, and rewinding storehouse 21a is divided into one-level rewinding storehouse, secondary rewinding storehouse, three grades of rewinding storehouses etc. successively.
Selection by winnowing grading technology is as follows: air blast 1a blows in selection by winnowing classification case 2a, and combined aggregate (namely without selection by winnowing classification) is that heavy curtain shape enters in selection by winnowing classification case 2a by the charging aperture on selection by winnowing classification case 2a.Combined aggregate in selection by winnowing classification case 2a is resequenced by quality size after being subject to gas shock, is assembled in selection by winnowing classification case 2a, passive be classified into identical or close proportion, the separated aggregate of different-grain diameter level scope.The particle diameter of separated aggregate is assembled from big to small, correspondence is divided into coarse aggregate in one-level coarse aggregate, secondary, three grades of fine aggregates etc., and drop to corresponding discharge outlet, by after this discharging opening respectively correspondence fall in one-level rewinding storehouse, secondary rewinding storehouse, three grades of rewinding storehouses, thus achieve classification and sort.
But, still there is following problem in the particle diameter of the aggregates at different levels obtained after the sorting of existing selection by winnowing hierarchy system: one is concentrate not, aggregate content in the aggregates at different levels obtained after selection by winnowing in same particle size range is on the low side, can not meet concrete configuration production technology to the grating requirement of different-grain diameter level aggregate.Two is that aggregate after selection by winnowing still adheres to containing a certain amount of stone flour, earth, and when ready-mixed concrete, stone flour and earth can reduce the concrete quality of finished product.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of concrete dry aggregate continuous multi-stage selection by winnowing classification case, multistage pneumatic separation can be carried out continuously, the particle diameter of separated aggregate is concentrated.
The object of the invention is to also provide a kind of concrete dry aggregate continuous multi-stage selection by winnowing grading plant, can realize rubbing combined aggregate and the classification of continuous multi-stage selection by winnowing, the particle diameter of separated aggregate can be made to concentrate, the content of earth in separated aggregate, stone flour and dust can be reduced again.
The object of the invention is to also provide a kind of concrete dry aggregate continuous multi-stage selection by winnowing hierarchy system, can realize rubbing combined aggregate, the classification of continuous multi-stage selection by winnowing and pump drainage filtered air, the particle diameter of separated aggregate can be made to concentrate, at utmost can reduce again the content of earth, stone flour and dust in different-grain diameter level aggregate after classification, without the need to carrying out follow-up washing and dehydration procedure again, reduce technological process, greatly reduce aggregate preparation cost, can also atmosphere pollution be reduced.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of concrete dry aggregate continuous multi-stage selection by winnowing classification case, comprise casing, the inside of casing becomes upper selection by winnowing classification case and lower selection by winnowing classification case by baffle for separating, the one end portion of upper selection by winnowing classification case and lower selection by winnowing classification case not correspondence is provided with enterprising air port and lower air inlet, and the other end of upper selection by winnowing classification case and lower selection by winnowing classification case respectively correspondence is provided with air outlet and lower air outlet; The top tank wall of upper selection by winnowing classification case has charging aperture near enterprising air port, the under casing wall of lower selection by winnowing classification case is laid with multiple discharging opening along wind direction, on dividing plate, corresponding multiple discharging opening is laid with multiple classification material mouth, and classification material mouth place is provided with the check valve opened towards lower selection by winnowing classification case.
Described dividing plate is towards the multiple funnelform upper collecting bin of surface formation protruding upward of described upper selection by winnowing classification case, and each upper collecting bin respectively corresponding described classification material mouth is arranged.
A kind of concrete dry aggregate continuous multi-stage selection by winnowing grading plant, comprise the material-falling hopper accepted successively, that can rub aggregate rubs deslimer, continous way multistage pneumatic separation classification case and rewinding storehouse; Wherein, continous way multistage pneumatic separation classification case comprises casing, the inside of casing becomes upper selection by winnowing classification case and lower selection by winnowing classification case by baffle for separating, the one end portion of upper selection by winnowing classification case and lower selection by winnowing classification case not correspondence is provided with enterprising air port and lower air inlet, and the other end of upper selection by winnowing classification case and lower selection by winnowing classification case respectively correspondence is provided with air outlet and lower air outlet; The top tank wall of upper selection by winnowing classification case has charging aperture near enterprising air port, and charging aperture place correspondence is arranged rubs deslimer, and the under casing wall of lower selection by winnowing classification case is laid with multiple discharging opening along wind direction, and multiple discharge outlet respectively correspondence arranges rewinding storehouse; On dividing plate, corresponding multiple discharging opening is laid with multiple classification material mouth, and classification material mouth place is provided with the check valve opened towards lower selection by winnowing classification case.
Described deslimer of rubbing comprises casing, emery wheel and driving mechanism, and driving mechanism is in transmission connection emery wheel, and emery wheel is arranged in casing in revolvable mode; The wheel face of emery wheel is provided with main mill layer, and on the internal box wall of casing, corresponding main mill layer is provided with secondary mill layer, and the outer surface of main mill layer and secondary mill layer protrudes the multiple convex mill portion being formed and rub aggregate respectively.
Described deslimer of rubbing also comprises clearance adjustment mechanism, and clearance adjustment mechanism comprises adjusting rod and spring, and the one end part of adjusting rod, outside casing, to stretch in described casing in the mode pointing to emery wheel after the sheathed spring in this end and supports on described pair mill layer.
Described deslimer of rubbing comprises casing, emery wheel and driving mechanism, and driving mechanism is in transmission connection emery wheel, and emery wheel is two, and two emery wheels are arranged in casing in the mode of the aggregate that can rotate and knead; The wheel face of emery wheel is provided with main mill layer, and the outer surface of main mill layer protrudes and formed grinding the multiple convex mill portion of rubbing aggregate.
Described emery wheel rotates in windward type discharging towards described enterprising air port.
A kind of concrete dry aggregate continuous multi-stage selection by winnowing hierarchy system, comprises and accepts continous way multistage pneumatic separation grading plant, cyclonic filter equipment and control of dust filter plant successively; Wherein, continous way multistage pneumatic separation grading plant comprises the material-falling hopper accepted successively, and that can rub aggregate rubs deslimer, continous way multistage pneumatic separation classification case and rewinding storehouse; Continous way multistage pneumatic separation classification case comprises casing, the inside of casing becomes upper selection by winnowing classification case and lower selection by winnowing classification case by baffle for separating, the one end portion of upper selection by winnowing classification case and lower selection by winnowing classification case not correspondence is provided with enterprising air port and lower air inlet, and the other end of upper selection by winnowing classification case and lower selection by winnowing classification case respectively correspondence is provided with air outlet and lower air outlet; The top tank wall of upper selection by winnowing classification case has charging aperture near enterprising air port, and charging aperture place correspondence is arranged rubs deslimer, and the under casing wall of lower selection by winnowing classification case is laid with multiple discharging opening along wind direction, and multiple discharge outlet respectively correspondence arranges rewinding storehouse; On dividing plate, corresponding multiple discharging opening is laid with multiple classification material mouth, and classification material mouth place is provided with the check valve opened towards lower selection by winnowing classification case; Enterprising air port and lower air inlet are communicated with air blast respectively by airduct; Or enterprising air port is communicated with air-introduced machine by airduct; Or enterprising air port is communicated with air-introduced machine by airduct, lower air inlet is communicated with air blast by airduct; Or enterprising air port is communicated with air blast by airduct, lower air inlet is communicated with air-introduced machine by airduct.
The upper adjustable plate regulating described upper selection by winnowing classification case air quantity and blast is provided with between described enterprising air port and described charging aperture; The lower adjustable plate regulating lower selection by winnowing classification case air quantity and blast is provided with between described lower air inlet and described classification material mouth.
After adopting said structure, a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing classification case has following beneficial effect: combined aggregate is that the free-falling of heavy curtain shape enters in casing from charging aperture, can be in the wind to select in classification case and lower selection by winnowing classification case by wind energy and carry out two-stage selection by winnowing continuously, combined aggregate is made to assemble classification rapidly by its grain-size grade scope, and discharge from each discharging opening correspondence, dry aggregate gradation can be improved and sort production efficiency; And the earth be mingled with in combined aggregate and stone flour are after continuous two-stage selection by winnowing, along with air discharges casing from upper air outlet and lower air outlet respectively, the earth in separated aggregate and stone flour can be reduced.
After adopting said structure, a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing grading plant has following beneficial effect: the first step, rubbing, can peel off the earth of combined aggregate surface adhesion, stone flour by rubbing deslimer to combined aggregate; Or the combined aggregate be sticked together is ground loose; Second step, is that heavy curtain shape enters casing through the combined aggregate rubbed, is in the wind to select in classification case and lower selection by winnowing classification case and carries out two-stage selection by winnowing continuously.The earth that aggregate surface bonds rubbed into dust by rubbing deslimer and discharges casing by upper air outlet and lower air outlet, separated aggregate is clean, and can exempt washing and dehydration, shortened process, reduces costs, and improves the concrete quality of finished product.And owing to utilizing wind energy to carry out two-stage selection by winnowing continuously to combined aggregate, classification is assembled rapidly by aggregate size level scope, dry aggregate gradation can be improved and sort production efficiency, especially in concrete configuration is produced, flexible gradation can be realized within the scope of larger aggregate gradation according to the concrete configuration technique of difference requirement and strength grade, can concrete quality be improved, save cement consumption, reduce manufacturing cost.
After adopting said structure, a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing hierarchy system has following beneficial effect: the first step, by rubbing deslimer, combined aggregate being rubbed, the earth of aggregate surface can be peeled off, or the aggregate be sticked together is ground loose; Second step, is that heavy curtain shape enters casing through the combined aggregate rubbed, is in the wind to select in classification case and lower selection by winnowing classification case and carries out two-stage selection by winnowing continuously.Meanwhile, collected the dust produced in winnowing process by cyclonic filter equipment and control of dust filter plant, reach environmental protection and improve the object of production environment.Native system removes earth, the stone flour of aggregate surface adhesion by rubbing deslimer; Can exempt washing and dehydration, shortened process, reduces costs, and improves the concrete quality of finished product.Utilize air blast to carry out two-stage selection by winnowing continuously to combined aggregate, improve dry aggregate gradation and sort efficiency, and then improve concrete quality, save cement consumption, environmental.In addition, native system can also form a circulating aidr bells blast system, and the particle diameter of separated aggregate can be made to concentrate, the dust in separated aggregate can be reduced again, the energy can also be saved, reduce energy consumption, emissions reduction, reduce atmosphere pollution, finally reach energy-conservation, low-carbon (LC), environmental protection object.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing concrete dry aggregate selection by winnowing hierarchy system;
Fig. 2 is the structural representation one of the selection by winnowing classification case in existing selection by winnowing hierarchy system;
Fig. 3 is the structural representation two of the selection by winnowing classification case in existing selection by winnowing hierarchy system;
Fig. 4 a is the structural representation one of a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing hierarchy system;
Fig. 4 b is the structural representation two of a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing hierarchy system;
Fig. 5 is the structural representation three of a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing hierarchy system;
Fig. 6 is the structural representation of a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing grading plant;
Fig. 7 is the working state schematic representation of a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing grading plant;
Fig. 8 is the structural representation of another embodiment of a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing grading plant.
In figure:
Air blast 1a selection by winnowing classification case 2a
Rewinding storehouse 21a cyclonic filter equipment 3a
Control of dust filter plant 4a continous way multistage pneumatic separation grading plant 10
Material-falling hopper 11 rubs deslimer 12
Casing 121 pair mill layer 121a
Emery wheel 122 main mill layer 122a
Clearance adjustment mechanism 123 adjusting rod 124
Spring 125 continous way multistage pneumatic separation classification case 13
Selection by winnowing classification case 131a on casing 131
The enterprising air port 131c of lower selection by winnowing classification case 131b
Air inlet 131e under upper air outlet 131d
Lower air outlet 131f charging aperture 131g
Collecting bin 131i on discharging opening 131h
Dividing plate 132 classification material mouth 132a
Check valve 132b rewinding storehouse 14
One-level rewinding storehouse 14a secondary rewinding storehouse 14b
Three grades of rewinding storehouse 14c level Four rewinding storehouse 14d
Pyatyi rewinding storehouse 14e air blast 20
Upper adjustable plate 21 times adjustable plates 22
Cyclonic filter equipment 30 control of dust filter plant 40
Air-introduced machine 50
Detailed description of the invention
In order to explain technical scheme of the present invention further, below by specific embodiment, the present invention will be described in detail.
Embodiment one
As shown in Fig. 4 a to Fig. 8, a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing hierarchy system, comprises continous way multistage pneumatic separation grading plant 10, air blast 20, cyclonic filter equipment 30 and the control of dust filter plant 40 accepted successively.
Continous way multistage pneumatic separation grading plant 10 comprise accept successively material-falling hopper 11, rub deslimer 12, continous way multistage pneumatic separation classification case 13 and rewinding storehouse 14.
Material-falling hopper 11 is in bucket-shaped, and the charging aperture that correspondence rubs deslimer 12 is arranged on the top of rubbing deslimer 12.Aggregate is thrown in material-falling hopper 11 by other feed mechanisms, then enters and rubs in deslimer 12.
Rub deslimer 12 and can adopt following two kinds of embodiments.Wherein a kind of embodiment as shown in Figure 6 and Figure 7, rubs deslimer 12 and comprise casing 121, emery wheel 122, clearance adjustment mechanism 123 and driving mechanism.
The bottom of casing 121 has discharging opening, and this discharging opening is communicated with the charging aperture 131g on upper selection by winnowing classification case 131a.Driving mechanism is arranged on outside casing 121, and the output shaft of driving mechanism to stretch in casing 121 and the emery wheel 122 that is in transmission connection, and emery wheel 122 is arranged in casing 121 in revolvable mode.
The wheel face of emery wheel 122 is provided with main mill layer 122a, and on the internal box wall of casing 121, corresponding main mill layer 122a is provided with secondary mill layer 121a, and secondary mill layer 121a is that bending is around in outside main mill layer 122a.The surface of main mill layer 122a and secondary mill layer 121a respectively corresponding protrusion forms multiple convex mill portion, and convex mill portion is small raised lump shape, bulge shape or fin shape, convex mill portion both can one-body molded also can separable assembled shaping.Emery wheel 122 can one-body molded main mill layer 122a, or emery wheel 122 and main mill layer 122a are split type, and main mill layer 122a is set on the wheel face of emery wheel 122.When main mill layer 122a rotates relative to secondary mill layer 121a, main mill layer 122a rubs, extrudes aggregate together with the convex mill portion on secondary mill layer 121a, is rubbed with the hands by the earth that aggregate surface bonds, can also rub scattered the aggregate be bonded together.As a preferred embodiment of the present invention, emery wheel 122 rotates towards enterprising air port 131c, rub like this, extrude, mill after aggregate be windward type discharging, and to be entered in upper selection by winnowing classification case 131a by the charging aperture 131g on the discharging opening 131h bottom casing 121, upper selection by winnowing classification case 131a successively.By improving the windward side of aggregate, selection by winnowing classifying capability can be improved.
Clearance adjustment mechanism 123 comprises adjusting rod 124 and spring 125.The one end part of adjusting rod 124, outside casing 121, to stretch in casing 121 in the mode pointing to emery wheel 122 after the sheathed spring 125 in this end and supports on pair mill layer 121a.Main mill layer 122a and secondary mill layer 121a can adopt high-abrasive material to make respectively.According to particle size and the clean level of aggregate, back-out, precession adjusting rod 124 accordingly, the gap between main mill layer 122a and secondary mill layer 121a is made correspondingly to become large, or make the end of adjusting rod 124 promote secondary mill layer 121a inwards near main mill layer 122a, to turn the gap between main mill layer 122a and secondary mill layer 121a down.By clearance adjustment mechanism 123, can improve and rub effect.
Another embodiment as shown in Figure 8, is rubbed deslimer 12 and is comprised casing 121, emery wheel 122 and driving mechanism.Emery wheel 122 is two, and two emery wheels 122 are arranged in casing 121 in the mode that can rotate and knead, and the output shaft of driving mechanism to stretch in casing 121 and one of them emery wheel 122 that is in transmission connection.The wheel face of emery wheel 122 protrudes the multiple convex mill portion being formed and rub aggregate respectively, and this convex mill portion as previously mentioned, can be also both fin shape in small raised lump shape, both can one-body moldedly also can form by separable assembled.
Continous way multistage pneumatic separation classification case 13 comprises casing 131, by dividing plate 132, the interior separation of casing 131 is become upper selection by winnowing classification case 131a and lower selection by winnowing classification case 131b.The one end portion of upper selection by winnowing classification case 131a and lower selection by winnowing classification case 131b not correspondence is provided with enterprising air port 131c and lower air inlet 131e, and the other end of upper selection by winnowing classification case 131a and lower selection by winnowing classification case 131b respectively correspondence is provided with air outlet 131d and lower air outlet 131f.Upper air outlet 131d is communicated with cyclonic filter equipment 30 with lower air outlet 131f respectively by airduct.
The top tank wall of upper selection by winnowing classification case 131a has charging aperture 131g near enterprising air port 131c, and charging aperture 131g correspondence is communicated with the discharging opening rubbing deslimer 12.The under casing wall of lower selection by winnowing classification case 131b is laid with multiple discharging opening 131h along wind direction, and multiple discharging opening 131h place respectively correspondence arranges rewinding storehouse 14.Rewinding storehouse 14 can according to the particle diameter of aggregate by greatly to being divided into one-level rewinding storehouse 14a, secondary rewinding storehouse 14b, three grades of rewinding storehouse 14c, level Four rewinding storehouse 14d, Pyatyi rewinding storehouse 14e etc.
On dividing plate 132, corresponding multiple discharging opening 131h is laid with multiple classification material mouth 132a, classification material mouth 132a place is provided with the check valve 132b opened towards lower selection by winnowing classification case 131b, avoid the blast in lower selection by winnowing classification case 131b may be greater than selection by winnowing classification case 131a, and form blowback and affect separating effect.Check valve 132b can realize the unidirectional function opened under certain pressure effect, and check valve 132b can adopt existing conventional structure, and its concrete structure and operation principle thereof are prior art, as known technology, does not repeat them here.Dividing plate 132 is protruding upward towards the surface of upper selection by winnowing classification case 131a forms multiple funnelform upper collecting bin 131i in taper, and each upper collecting bin 131i respectively corresponding classification material mouth 132a is arranged.
The air outlet of air blast 20 is communicated with lower air inlet 131e by airduct.
Arrange two equipment filtered in the present invention, one is cyclonic filter equipment 30, and another is control of dust filter plant 40.Cyclonic filter equipment 30 is used for filtering comparatively coarse granule level travel fatigue, and to alleviate the load of control of dust filter plant 40 below, control of dust filter plant 40 adopts sack cleaner structure, and this structure can finally dedusting, mainly process relatively fine particle level dust.
Cyclonic filter equipment 30 can adopt two kinds of conventional structures.One is spiral shell shell mould cyclonic filter equipment, and it utilizes centrifugal principle to be separated dust.Spiral shell shell mould cyclonic filter equipment mainly comprises Whirlwind barrel, is arranged on the flue-dust retainer bottom Whirlwind barrel, and is arranged on the spiral case (or collection blast cap) at Whirlwind barrel top, and spiral case sets out air port.Another kind is ordinary cyclones deduster, can from air-flow separating solids and liquid particle, or from liquid separating solid particles.Ordinary cyclones deduster mainly comprises cylinder, is arranged on the ash bucket of cylinder bottom, and is arranged on the cone at cylinder top.Cylinder has air inlet, cone has air outlet.The air inlet of cyclonic filter equipment 30 is communicated with upper air outlet 131d and lower air outlet 131f respectively by airduct, and the air outlet of cyclonic filter equipment 30 is communicated with the air inlet of control of dust filter plant 40 by airduct.In addition, the air outlet place of control of dust filter plant 40 also can arrange air-introduced machine 50, to improve pump drainage wind, the filter effect of control of dust filter plant 40.
Control of dust filter plant 40 also can adopt conventional structure, and it mainly comprises filter box and is arranged on the multiple filtration string bags in filter box.The air inlet that gas is offered bottom filter box enters, and then enters the filtration string bag, is discharged outside filter box by the outlet of filtering the string bag.Making gas obtain filtration, purification by filtering the string bag, can the impurity such as stone flour be removed.
The air port of letting out of control of dust filter plant 40 is communicated with the enterprising air port 131c going up selection by winnowing classification case 131a by airduct; The air outlet of air blast 20 is communicated with the lower air inlet 131e of lower selection by winnowing classification case by airduct.The upper adjustable plate 21 regulating selection by winnowing classification case 131a air quantity and blast is provided with between enterprising air port 131c and charging aperture 131g; The lower adjustable plate 22 regulating lower selection by winnowing classification case 131b air quantity and blast is provided with between air inlet 131e and classification material mouth 132a under lower selection by winnowing classification case.
Wherein, check valve 132b, cyclonic filter equipment 30 and control of dust filter plant 40 adopt existing conventional structure respectively, and its concrete structure and operation principle thereof are prior art, as known technology, do not repeat them here.
Convenient in order to describe, aggregate pending before selection by winnowing classification is referred to as combined aggregate, is referred to as rough segmentation aggregate after a selection by winnowing classification, being referred to as after the classification of secondary selection by winnowing segments aggregate.
Adopt a kind of concrete of the present invention dry aggregate continuous multi-stage selection by winnowing hierarchy system, its production method is realized by following steps:
1, combined aggregate is selected, combined aggregate can select natural sand, natural stone, Machine-made Sand, machine-processed stone, metal or nonmetallic ore that waste material, metal or nonmetal smelting or ore dressing factory can be utilized can to utilize waste material, thermal power plant's slag, the one that can utilize in the mixing grain-size grade materials such as renewable material of building waste, or any combination of wherein close gravitational material; Preferably select the dry aggregate that there is not bonding phenomenon between different-grain diameter aggregate, through prescreening or fragmentation, screening process, the selected pending aggregate with certain particle size range.
2, selected combined aggregate is entered by material-falling hopper rub in deslimer 12, rub deslimer 12 pairs of aggregates and rub, kibble desilt, be conducive to lower one force one wind and select classification process.
3, the combined aggregate rubbed is the upper selection by winnowing classification case 131a that heavy curtain shape falls in continous way multistage pneumatic separation classification case 13, draw the remaining air quantity of cleaning cycle letting out air port from control of dust filter plant 40 to continue to enter in upper selection by winnowing classification case 131a by airduct, under certain wind-force effect, first carry out the classification of first order selection by winnowing, remove the stone flour carried secretly in combined aggregate and mud dirt in advance, and the upper collecting bin 131i of corresponding particle size range will be moved to compared with lightweight aggregate successively pusher, form rough segmentation aggregate, reach a certain amount of after, under the self gravitation effect of rough segmentation aggregate, check valve 132b opens automatically, rough segmentation aggregate falls in lower selection by winnowing classification case 131b.
4, air blast 20 continues in downward selection by winnowing classification case 131b while air-supply, and to the further selection by winnowing classification of rough segmentation aggregate continuing to fall from classification material mouth 132a, the aggregate of corresponding proportion and particle size range falls in corresponding rewinding storehouse 14.
5, carry secretly in upper selection by winnowing classification case 131a and lower selection by winnowing classification case 131b earth, dust, stone flour gas correspondingly respectively enter cyclonic filter equipment 30 and control of dust filter plant 40 successively by upper air outlet 131d and lower air outlet 131f, the remaining air quantity of cleaning is after filtering introduced into the enterprising air port 131c of upper selection by winnowing classification case from letting out after air port is discharged of control of dust filter plant 40, realizes recycling.
6, each grain-size grade finally processed through lower selection by winnowing classification case 131b segments aggregate, the content of its earth and stone flour is up to standard, after falling into corresponding rewinding storehouse 14 respectively, high-order aggregate bin that the belt conveyor (figure omits) divided into is sent to concrete mixing plant stores for subsequent use to rely on aggregate self gravitation to fall into respectively.
Below continuous multi-stage selection by winnowing principle of the present invention and process are described further.Drawing the remaining air quantity of the cleaning cycle upwards lasting air-supply of selection by winnowing classification case 131a of letting out air port from control of dust filter plant 40, the air blast 20 interior air-supply of selection by winnowing classification case 131b downwards simultaneously, according to parameters such as the combined aggregate particle size of rubbing, proportion and dust content degree, the air output introducing cleaning cycle air quantity and air blast 20 is regulated by upper adjustable plate 21, lower adjustable plate 22, to realize the adjustment to gas flow rate and flow, thus realize ideal selection by winnowing grading effect.
Combined aggregate after rubbing is that heavy curtain shape enters upper selection by winnowing classification case 131a by the charging aperture 131g of long narrow passage, and be in the wind and select in classification case 131a through the classification of first selection by winnowing, thus corresponding formation multiply rough segmentation aggregate, the particle diameter of per share rough segmentation aggregate is concentrated along the descending distribution of wind direction, and the rough segmentation aggregate of setting particle size range falls in corresponding upper collecting bin 131i respectively.
When the rough segmentation aggregate of each particle size range is gathered in upper collecting bin 131i, check valve 132b bottom upper collecting bin 131i opens successively under the Action of Gravity Field of rough segmentation aggregate, multiply rough segmentation aggregate falls to entering in lower selection by winnowing classification case 131b in heavy curtain shape respectively, through the classification of second selection by winnowing, thus the corresponding multiply that formed segments aggregate, the descending distribution of particle diameter of multiply segmentation aggregate concentrates correspondence to be divided into one-level aggregate, secondary aggregate, three grades of aggregates, level Four aggregate, Pyatyi aggregate, and correspondence falls into one-level rewinding storehouse 14a, secondary rewinding storehouse 14b, three grades of rewinding storehouse 14c, in level Four rewinding storehouse 14d and Pyatyi rewinding storehouse 14e.
Carry secretly in upper selection by winnowing classification case 131a and lower selection by winnowing classification case 131b earth, dust, stone flour mist correspondingly respectively enter cyclonic filter equipment 30 and control of dust filter plant 40 successively by upper air outlet 131d and lower air outlet 131f, after filtering, dust is discharged and is collected process bottom whirlwind filter plant 30 and control of dust filter plant 40, remaining air quantity introduces the upper enterprising air port 131c of selection by winnowing classification case 131a from letting out air port by airduct, recycles.
Selection by winnowing classification principle of the present invention: be make use of Aerodynamics and newton's kinetic energy conservation theory, proportion is identical or close, identical or the close dried material of particle diameter is under same direction is subject to the effect of same gas motive force, kinetic energy is identical or close, namely the distance of the stressed rear movement of dried material is identical or close, that is the dry aggregate of different-grain diameter is subject to identical thrust gas, the distance of movement is different.When selection by winnowing classification is carried out to dried material, the remaining air quantity of circulation in air port is let out from control of dust filter plant 40, continue to enter upper selection by winnowing classification case 131a by airduct, according to material characteristic and classification requirement, regulated by upper adjustable plate 21 pairs of air quantity and blast, meanwhile combined aggregate is from material-falling hopper 11 free-falling, be in the wind to select in classification case 131a by quality size (namely particle size) after being subject to gas shock and resequence, assemble, passive rough classification becomes the rough segmentation aggregate of identical or close proportion different-grain diameter level scope, rough segmentation aggregate from big to small namely assemble drop to corresponding classification material mouth 132a place, and be that heavy curtain shape enters lower selection by winnowing classification case 131b by the long narrow stick channel of check valve 132b on corresponding classification material mouth 132a.
Equally, the gas of certain pressure and flow is sent into lower selection by winnowing classification case 131b by air blast 20 in advance, the flow of air-supply and flow velocity are according to material characteristic and classification requirement, regulated by lower adjustable plate 22, meanwhile the check valve 132b long narrow stick channel of rough segmentation aggregate on different classification material mouth 132a is the free-falling of heavy curtain shape, resequence in lower selection by winnowing classification case 131b by quality size (i.e. particle size) after being subject to gas shock, assemble, passive subfractionation becomes the segmentation aggregate of identical or close proportion different-grain diameter level scope, the particle diameter of the aggregate after segmentation is descending is divided into one-level, secondary, three grades etc., and correspondence falls into one-level rewinding storehouse 14a, secondary rewinding storehouse 14b, three grades of rewinding storehouse 14c, level Four rewinding storehouse 14d and Pyatyi rewinding storehouse 14e etc.The corresponding aggregate that institute classification is formed is: one-level divides thickness in aggregate, secondary to divide fine point of aggregate, the special fine point of aggregate of Pyatyi etc. in aggregate, three grades of finer point of aggregates, level Four compared with thickness, and the Accurate Classification achieving combined aggregate sorts.
The present invention is according to the manufacturing technique requirent of different industries, can disposable by drying the granule materials of certain grain-size grade scope in identical or close proportion mixed material, realize assembling rapidly and classification under thrust gas effect, the material of same proportion, by sorting the multiple kinds being classified as different-grain diameter scope by particle size, meets different requirement.Simultaneously, air classification method of the present invention completes in airtight upper selection by winnowing classification case 131a and lower selection by winnowing classification case 131b, man-made noise is polluted little, the dust of final formation collects process from the bottom dust-exhausting port of cyclonic filter equipment 30 and control of dust filter plant 40, pure air after filtration is recycled by the upper selection by winnowing classification case of airduct introducing from letting out air port, realize energy-saving and emission-reduction, without dust production operation, be conducive to environmental protection.
The data adopting the present invention to carry out selection by winnowing classification process are: the treating capacity of 10 tons/hour, is divided into the aggregate selecting 5 kinds of rank particle size range; And to the statistics of the vibratory sieve enforcement progressive operation of same power motor configuration be: the treating capacity of 8 tons/hour, can only sub-elect the aggregate of 3 kinds of particle diameter level ranges, classification obvious processing effect of the present invention.If implement the present invention on a large scale, whole work efficiency and the product quality of concrete production industry greatly will be improved.Moreover, ability is sorted to the classification of the dried material promoted in other industrial circle and equally there is realistic meaning.
The aggregate size distribution statistics table of comparisons after utilizing conventional air classification stage division and utilizing selection by winnowing classification of the present invention
Embodiment two
As shown in Fig. 4 a, Fig. 4 b and Fig. 5, the main distinction of the present embodiment and embodiment one is to replace air blast 20 with air-introduced machine 50, and air-introduced machine 50 is arranged on control of dust filter plant 40 let out air port place, the lower air inlet 131e of lower selection by winnowing classification case 131b opens wide.Air-introduced machine 50 in the present embodiment can be arranged separately, or utilize set up in control of dust filter plant 40 quote wind.
What the suction opeing of air-introduced machine 50 connected control of dust filter plant 40 in production line lets out air port, and the air outlet of air-introduced machine 50 connects enterprising air port 131c, by air-introduced machine 50, the filtered air pumped out from control of dust filter plant 40 is sent in upper selection by winnowing classification case 131a.By the swabbing action of air-introduced machine 50, make the blast and the air quantity that form same intensity in lower selection by winnowing classification case 131b.
The present embodiment aspirates by air-introduced machine 50 clean air that in control of dust filter plant 40, negative pressure filtration is discharged, and sends in upper selection by winnowing classification case 131a, for the classification of first selection by winnowing.Can form a circulating aidr bells blast system like this, one can save energy the energy, reduce energy consumption, two can emissions reduction, reduce atmosphere pollution, finally reach energy-conservation, low-carbon (LC), environmental protection object.
And the present embodiment is by upper selection by winnowing classification case 131a and lower selection by winnowing classification case 131b, also can improve aggregate separated efficiency, make the particle diameter of the aggregates at different levels after material particles classification more concentrated, and then improve selection by winnowing classifying capability.
Embodiment three
The main distinction of the present embodiment and embodiment one is, the air outlet of air blast 20 is communicated with enterprising air port 131c and lower air inlet 131e respectively by airduct.
Embodiment four
Arrange air blast 20 and air-introduced machine 50 in the present embodiment, the air outlet of air blast 20 is communicated with enterprising air port 131c by airduct simultaneously, and the air outlet of air-introduced machine 50 is communicated with lower air inlet 131e by airduct.
Above-described embodiment and accompanying drawing non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.

Claims (6)

1. a concrete dry aggregate continuous multi-stage selection by winnowing classification case, it is characterized in that, comprise casing, the inside of casing becomes upper selection by winnowing classification case and lower selection by winnowing classification case by baffle for separating, the one end portion of upper selection by winnowing classification case and lower selection by winnowing classification case not correspondence is provided with enterprising air port and lower air inlet, and the other end of upper selection by winnowing classification case and lower selection by winnowing classification case respectively correspondence is provided with air outlet and lower air outlet; The top tank wall of upper selection by winnowing classification case has charging aperture near enterprising air port, the under casing wall of lower selection by winnowing classification case is laid with multiple discharging opening along wind direction, on dividing plate, corresponding multiple discharging opening is laid with multiple classification material mouth, and classification material mouth place is provided with the check valve opened towards lower selection by winnowing classification case;
Described dividing plate is towards the multiple funnelform upper collecting bin of surface formation protruding upward of described upper selection by winnowing classification case, and each upper collecting bin respectively corresponding described classification material mouth is arranged.
2. a concrete dry aggregate continuous multi-stage selection by winnowing grading plant, it is characterized in that, comprise the material-falling hopper accepted successively, that can rub aggregate rubs deslimer, continous way multistage pneumatic separation classification case and rewinding storehouse;
Wherein, continous way multistage pneumatic separation classification case comprises casing, the inside of casing becomes upper selection by winnowing classification case and lower selection by winnowing classification case by baffle for separating, the one end portion of upper selection by winnowing classification case and lower selection by winnowing classification case not correspondence is provided with enterprising air port and lower air inlet, and the other end of upper selection by winnowing classification case and lower selection by winnowing classification case respectively correspondence is provided with air outlet and lower air outlet; The top tank wall of upper selection by winnowing classification case has charging aperture near enterprising air port, and charging aperture place correspondence is arranged rubs deslimer, and the under casing wall of lower selection by winnowing classification case is laid with multiple discharging opening along wind direction, and multiple discharge outlet respectively correspondence arranges rewinding storehouse; On dividing plate, corresponding multiple discharging opening is laid with multiple classification material mouth, and classification material mouth place is provided with the check valve opened towards lower selection by winnowing classification case;
Described deslimer of rubbing comprises casing, emery wheel and driving mechanism, and driving mechanism is in transmission connection emery wheel, and emery wheel is arranged in casing in revolvable mode; The wheel face of emery wheel is provided with main mill layer, and on the internal box wall of casing, corresponding main mill layer is provided with secondary mill layer, and the outer surface of main mill layer and secondary mill layer protrudes the multiple convex mill portion being formed and rub aggregate respectively;
Described deslimer of rubbing also comprises clearance adjustment mechanism, and clearance adjustment mechanism comprises adjusting rod and spring, and the one end part of adjusting rod, outside casing, to stretch in described casing in the mode pointing to emery wheel after the sheathed spring in this end and supports on described pair mill layer.
3. a kind of concrete as claimed in claim 2 dry aggregate continuous multi-stage selection by winnowing grading plant, it is characterized in that, described deslimer of rubbing comprises casing, emery wheel and driving mechanism, driving mechanism is in transmission connection emery wheel, emery wheel is two, and two emery wheels are arranged in casing in the mode of the aggregate that can rotate and knead; The wheel face of emery wheel is provided with main mill layer, and the outer surface of main mill layer protrudes and formed grinding the multiple convex mill portion of rubbing aggregate.
4. a kind of concrete as claimed in claim 2 dry aggregate continuous multi-stage selection by winnowing grading plant, it is characterized in that, described emery wheel rotates in windward type discharging towards described enterprising air port.
5. a concrete dry aggregate continuous multi-stage selection by winnowing hierarchy system, is characterized in that, comprises and accepts continous way multistage pneumatic separation grading plant, cyclonic filter equipment and control of dust filter plant successively;
Wherein, continous way multistage pneumatic separation grading plant comprises the material-falling hopper accepted successively, and that can rub aggregate rubs deslimer, continous way multistage pneumatic separation classification case and rewinding storehouse;
Continous way multistage pneumatic separation classification case comprises casing, the inside of casing becomes upper selection by winnowing classification case and lower selection by winnowing classification case by baffle for separating, the one end portion of upper selection by winnowing classification case and lower selection by winnowing classification case not correspondence is provided with enterprising air port and lower air inlet, and the other end of upper selection by winnowing classification case and lower selection by winnowing classification case respectively correspondence is provided with air outlet and lower air outlet; The top tank wall of upper selection by winnowing classification case has charging aperture near enterprising air port, and charging aperture place correspondence is arranged rubs deslimer, and the under casing wall of lower selection by winnowing classification case is laid with multiple discharging opening along wind direction, and multiple discharge outlet respectively correspondence arranges rewinding storehouse; On dividing plate, corresponding multiple discharging opening is laid with multiple classification material mouth, and classification material mouth place is provided with the check valve opened towards lower selection by winnowing classification case;
Enterprising air port and lower air inlet are communicated with air blast respectively by airduct; Or enterprising air port is communicated with air-introduced machine by airduct; Or enterprising air port is communicated with air-introduced machine by airduct, lower air inlet is communicated with air blast by airduct; Or enterprising air port is communicated with air blast by airduct, lower air inlet is communicated with air-introduced machine by airduct.
6. a kind of concrete as claimed in claim 5 dry aggregate continuous multi-stage selection by winnowing hierarchy system, is characterized in that, be provided with the upper adjustable plate regulating described upper selection by winnowing classification case air quantity and blast between described enterprising air port and described charging aperture; The lower adjustable plate regulating lower selection by winnowing classification case air quantity and blast is provided with between described lower air inlet and described classification material mouth.
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