CN203764210U - Adjustable fluidized bed coating device - Google Patents

Abstract

The utility model relates to an adjustable fluidized bed coating device and relates to the technical field of production process of mass uniform coatings. The adjustable fluidized bed coating device comprises a shell, an air inlet, an air inlet chamber, an air separating screen plate, a fluidizing chamber, a separating chamber, an air outlet and a spray gun. A fluidized bed coating method is adopted to clad a coating agent on the outer parts of nuclear pill granules, and the height of the atomizing area of the spray gun connected with the coating agent is increased along with the increase of the fluidized material level. The adjustable fluidized bed coating device is especially suitable for industrialized mass production, the batch processing capacity can be 20 tons/batch, and the adjustable fluidized bed coating device has the advantages of high quality of products, high yield, low production cost and stability and safety in operation.

Description

A kind of adjustable fluid bed coating device

Technical field

The utility model relates to coating process technical field uniformly in enormous quantities.

Background technology

Adopt coating method, carry out the coated of various effective ingredients, related to the various effects such as anti-oxidant dressing, moistureproof coating, the molten dressing of stomach, enteric coating, painted dressing, wherein dressing weightening finish reaches more than 30% or when every batch processing amount is greater than 300 kilograms, just there will be ill effect:

1, dressing is difficult to evenly, and at inhomogeneous thin place, strength weak place, coating thickness is also difficult to play coated effect.

2, existing coating method cannot be produced greatly, and difficult quality guarantee.Fluidized-bed coating machine in the market, single batch processing amount is greater than 300 kilograms also not having, influenced when large production, reason is that a batch hopper adopts artificial cart type, bucket capacity maximum only has 1500 liters, thereby can only process 300 kilograms, the core ball entering is along with the carrying out of dressing process, volume can constantly increase, until when 2 times of left and right, changeless spray gun, top spray form, the spray gun of end spray form, all cause coating quality to be difficult to qualified, find to be greater than 20 kilograms every batch when treating capacity through application study, simultaneously dressing weightening finish reaches 100% when above, coating quality will be defective,

Such as: in normal fluid bed, when fluidisation, bulky grain can be partial to and be concentrated on below, and granule can be partial to and be concentrated on top, the changeless spray gun in position, in the time that fluidisation material level increases, for the fluidisation position increasing, spray gun is easily spraying not; The spray gun of top spray form, in the time that fluidisation controlling level changes greatly, gun slot can change from fluosolids upper level, cause coating quality to change, and granule bag is more; Common fountain fluidisation shape, the spray gun of end spray form, in the time that fluidisation controlling level changes greatly, fountain fluidized state occurs that the reasons such as variation, the increasing of adhesion rate cause off quality.

3, such as in the time producing the common output of 20,000 tons per year, need to adopt existing coating equipment in sugar production lines more than 200 covers, substantially infeasible economically.

Utility model content

Recognize weightening finish than the economy that is greater than 30% product coating difficulty and coating equipment in sugar production line in enormous quantities, the utility model object is to propose a kind of uniform art for coating in enormous quantities, to avoid above-mentioned all prior art shortcomings.

The utility model adopts fluidized bed coating method at core ball particle outer wrapping coating agent, and the height that connects the atomization region of the spray gun formation of coating agent improves along with the increase of fluidisation material level.

Preferably, atomization described in the utility model region be arranged on material bed in.

Technique can be produced high weightening finish easily than protection product, be particularly applicable to large production, and product quality is high, yield is high, and producing cost is low, stable, safety.

Another object of the utility model is the adjustable fluid bed coating device proposing for above technique.

Adjustable fluid bed coating device is except conventional housing, air inlet, inlet air plenum, point wind web plate, fluidising chamber, separation chamber, air outlet and spray gun, and feature is: the atomization height of spray gun improves along with the increase of fluidisation material level.

Concrete have two kinds of modes at least:

One, at least two group spray guns of differing heights are set in fluidized bed with spraying, by control the spray gun of opening successively differing heights from bottom to top.

two,the angle of gun arranging is swingable, by control, angle of gun is swung from bottom to top.

Two kinds of modes all can make the range of atomization being formed by spray gun be submerged in the fluidisation bed of material, to adapt to coating production in enormous quantities, ensure qualified product, and more crucial be every batch can reach 20 tons for the treatment of capacities, has broken through the current restriction of 20 kilograms every batch.The shape of product of making is that class is spherical or spherical, and finished particle diameter can reach 0.6～3.6mm, and the ratio of screening pore size is not more than 50%.

Brief description of the drawings

Fig. 1 is a kind of process flow diagram of the present utility model.

Fig. 2 is a kind of structural representation of fluidized bed coating device.

Fig. 3 is the structural representation of another kind of fluidized bed coating device.

In figure, 1 makes ball machine for fluid bed, and 2 is polishing unit, and 3 is screening machine, 4 is quantitative measuring device, and 5 is adjustable fluidized-bed coating machine, and 6 is finished product screen extension set, 7 for making ball machine cyclone separator, and 8 is secondary ash collector, and 9 is crystal seed machine, 10 is seed-coating machine cyclone separator, 11 is packing machine, and 12 is that echo plex mode one, 13 is echo plex mode two, 14 is core ball conveying device, and 15 was cud semi-finished product conveying devices.

The 21 technique air inlets that are coating device in Fig. 2,3,22 is inlet air plenum, and 23 is a point wind web plate, and 24 is housing, 25 is separation chamber, and 26 is exhaust outlet, and 27 is first row spray gun, 28 is second row spray gun, and 29 is the 3rd row's spray gun, and 30 is that angle adjustable spray gun, 31 is fluidising chamber.

detailed description of the invention

A kind of taking FE-5 concentrate sterling as raw material to produce below, it is that example further illustrates the utility model that rumen-undegraded fat grain weight amount accounts for 50% rumen-protected product, but illustration does not form any restriction of the present utility model.

One, equipment is prepared: the utility model connects production equipment has continuous spraying, fluidizing bed to make ball machine 1, polishing unit 2, screening machine 3, quantitative measuring device 4, fluidized-bed coating machine 5, screening machine 6 etc., as shown in Figure 1.

Wherein fluidized-bed coating machine 5 is adjustable fluidized-bed coating machine, the range of atomization height of its spray gun improves along with the increase of fluidisation material level, can adapt to coating production in enormous quantities, ensure qualified product, more crucial be every batch can reach 20 tons for the treatment of capacities, has broken through the current restriction of 20 kilograms every batch.

As shown in Figure 2, scheme one is: in fluidized-bed coating machine 5, be provided with the opening sequence of the first row spray gun 27, second row spray gun 28 and the 3rd row's spray gun 29, the three row's spray guns that highly do not wait along with the increase of fluidisation material level, from 27 to 29 orders are opened.

As shown in Figure 3, scheme two is: the uniform row's spray gun 30 of the interior sustained height of fluidized-bed coating machine 5, can adopt angle controller, and make spray gun 30 along with the increase of fluidisation material level swings from bottom to top, to ensure the dressing uniformity of cud particle.

Two, raw material is prepared:

FE-5 concentrate through membrane filtration, ion-exchange, acid adjustment, the processing such as concentrated, must be produced core ball particle material liquid first successively.

The fine grinding of rumen-undegraded fat powder, obtains the coating agent of resistance to cud.The utility model to the coating agent of resistance to cud without any restriction, as long as met the requirement of cud, such as all rumen-undegraded fat T300 on sale, ethyl cellulose, various resinaes etc. on market, in the present embodiment, proper and economical with rumen-undegraded fat.

Three, production technology:

1, produce lysine hydrochloric acid salt core ball: make and in ball machine 1, material liquid is carried out to fluidized bed with spraying coating with the dry flow of 2 tons/h and make ball at fluid bed, seed is grown up to be coated with form, preferably increase weight than the implication that is not more than 20%(weightening finish ratio: in fluidized bed with spraying, material gross weight is 10kg, the 1kg dry that sprays into per hour, dry composition is grown up on crystal seed material, now weightening finish is than being 10%), then be dried with cooling, then the treating capacity in core ball conveying device 14 enters 2(polishing unit, polishing unit 2 is 2000～2400kg/h), core ball after polishing enters screening machine 3 again and screens, the particle of qualified size scope enters the quantitative measuring device 4 that Liang Tai is used alternatingly, suitable core ball particle size range is 0.5～0.7mm.

The small particle of the bulky grain sieving out through screening machine 3 after crystal seed machine 9 is processed and under sieve carries out defective work treatment process by echo plex mode 1, and the dust material that primary dust removing device 7 and secondary ash collector 8 are collected can enter defective work treatment process 12.

In addition, in said process, concentrate also can directly be inputted without membrane filtration, ion-exchange, acid adjustment, the technique such as concentrated fluid bed and make ball machine 1 and operate, but it is preferred mode that zymotic fluid is carried out to above-mentioned processing, because after pretreatment, effective content is the highest, good crystallinity, be easy to be pelletized into shape, can be coated with and cross cud materials more, and can reduce production costs.In addition, zymotic fluid in the utility model is amino acid whose zymotic fluid preferably, such as methionine, lysine, threonine, tryptophan etc., can also add some auxiliary materials, such as microcrystalline cellulose, starch, dextrin, medicine etc., other material liquids are also such as there being the high nutrients such as Choline Chloride, albumen, polysaccharide, peptide class, alkaloids.All can carry out according to existing known method or process membrane filtration of the present utility model, ion-exchange, acid adjustment, the effectively processing procedure such as concentrated.

The flow process that fluid bed is made ball machine 1 is not limited to above-mentioned embodiment.Be preferred embodiment, make ball machine cyclone separator 7 for primary dust removing, collect material and adopt crystal seed echo plex mode 1, secondary ash collector 8 adopts sack cleaner, collect material mode adopt echo plex mode 1 or echo plex mode 2 13 all passable, the coating that fluid bed is made ball machine 1 is made ball, dryly, cooling can be merged into a bed and also can implement separately, and another embodiment is polishing unit 2 to be incorporated into fluid bed make in ball machine 1, forms integral type core ball production unit.

The above-mentioned particle of making ball that completes outputs in polishing unit 2, the preferred scheme in polishing unit 2 is only to process particle surface, do not destroy particle entirety, can adopt the effect of wind-force or the effect of mechanical forces, possible particle surface spinule or high point are removed, make core ball meet profile, the particle diameter of cud core ball, the requirement of surface smoothness, another polishing embodiment is that particle surface is sprayed to low dry matter content feed liquid or pure water, by particle surface layer recrystallization, calendering, play the effect that mould on soft state surface, thereby play more smooth effect.

Make ball machine 1 and polishing unit 2 forms behind core ball unit by continuous spraying, fluidizing bed, the technique of producing core ball has been avoided the defect of the conventional wet processing in laboratory, and the particle diameter of core ball can accurate adjustment, between 0.3～1.8mm arbitrarily adjust, and can realize screening aperture magnitude difference be not more than 1.5.

Make in ball machine 1 at fluid bed, through the thermal current of accurate Calculation after fluidized bed air distribution plate distributes, enter fluid bed, make an interior material seed particles fluidisation, above-mentioned concentrate atomization is entered in fluid bed, mainly grow up with coating way on seed particles surface, and be coated with point and have enough calendering force effects, each painting point is enough little, like this after multi-layer coated, particle is slowly grown up, form the spheric granules that fine and close intensity is enough, and it is fast that this fluid bed preferably possesses granule growth, the intellectuality effect that bulky grain is grown slow, between particle, adhesion rate is few, after adhesion, can separate, to form uniform particle, preferably this fluid bed is made ball machine 1 and is also had function and be: serialization is produced, treating capacity is large, there is internal heater heat supply, operating cost is low, 2012102562273 1 kinds of spray pelleting process are exactly a kind of well implementation basis, on this basis, add internal heater configuration, mechanical energy effect, can obtain better semi-finished product core ball.

Make in ball machine 1 at fluid bed, when weightening finish than lower than a critical weightening finish than time, can directly obtain without external polishing unit 2 qualified core ball product.

Critical weightening finish is than implication: reach face weightening finish than time, the reunion rate of particle is per hour is greater than 2%; Reunion rate implication: in fluidized bed with spraying, often randomly draw 1000 particles through spraying in 1 hour, the granule number together of reuniting accounts for the ratio that extracts number.

Adopt the utility model technique, the diameter of the graininess core ball of making is 0.3～1.8mm.

2, produce rumen-protected product: will be added in adjustable fluidized-bed coating machine 5 by the quantitative lysine hydrochloric acid salt core ball of quantitative measuring device 4, by the spray gun of rumen-undegraded fat fen-ting amount access seed-coating machine 5 in batches.

As shown in Figure 2, technique wind is entered through inlet air plenum 22 by the technique air inlet 21 of coating device, after undue wind web plate 23 distributes, enter in the housing 24 of adjustable fluidized-bed coating machine 5, make the interior material particles fluidisation of seed-coating machine 5, flood first row spray gun 27, above-mentioned packaging material liquid is entered bed from 27 atomizations of first row spray gun, mainly grow up with coating way at particle surface, like this after multi-layer coated, particle is slowly grown up, when fluidisation material level grows to while flooding second row spray gun 28, open second row spray gun 28, open successively the 3rd row's spray gun 29, until obtain forming cud particle.

As shown in Figure 3, seed-coating machine technique air intake 21 is entered by inlet air plenum 22, after undue wind web plate 23 distributes, enter in the housing 24 of adjustable fluidized-bed coating machine 5, make the interior material particles of seed-coating machine 5 in the interior fluidisation of fluidising chamber 31, adopt angle controller, make spray gun 30 along with the increase of fluidisation material level swings from bottom to top, keep range of atomization to be submerged in the fluidisation bed of material, to ensure the dressing uniformity of cud particle simultaneously.

The treating capacity of the utility model dressing operation is that 10000～12000kg/ criticizes, every batch 2.5 hours.

Coated semi-finished product particle enters screening machine 6 by crossing cud semi-finished product conveying device 15, and treating capacity is 4000～5000kg/h, and qualified particle enters packing machine 11 and carries out packaging, and the treating capacity of packing machine 11 is 4000kg/h.The defective particle being sieved out by screening machine 6 enters defective work treatment process by echo plex mode 2 13.

In above technique, adjustable fluidized-bed coating machine 5 is adjustable fluidized-bed coating machine, the range of atomization height that it is characterized in that spray gun is raised along with the increase of fluidisation material level, this technique can adapt to coating production in enormous quantities, ensure qualified product, more crucial be every batch can reach 20 tons for the treatment of capacities, has broken through the current restriction of 20 kilograms every batch.

The feed liquid pipeline of spray gun adopts thermal-insulating scheme, and the temperature after insulation, higher than the melting point of crossing cud grease material, ensures that pipeline is noncondensing.

Claims (3)

1. an adjustable fluid bed coating device, comprises housing, air inlet, inlet air plenum, point wind web plate, fluidising chamber, separation chamber, air outlet and spray gun, it is characterized in that the atomization height of described spray gun improves along with the increase of fluidisation material level.

2. coating device according to claim 1, base is characterised in that at least two group spray guns that differing heights is set in fluidized bed with spraying, by control the spray gun of opening successively differing heights from bottom to top.

3. coating device according to claim 1, is characterized in that the angle of gun arranging is swingable, by control, angle of gun is swung from bottom to top.