CN2510806Y

CN2510806Y - Carrier-grain spraying dryer

Info

Publication number: CN2510806Y
Application number: CN 01264849
Authority: CN
Inventors: 杜克镛; 蔡亚军
Original assignee: HANGZHOU QIANJIANG DRYING EQUIPMENT CO Ltd
Current assignee: HANGZHOU QIANJIANG DRYING EQUIPMENT CO Ltd
Priority date: 2001-10-12
Filing date: 2001-10-12
Publication date: 2002-09-11
Anticipated expiration: 2011-10-12

Abstract

The utility model relates to a spray drier of a vector particle. The present spray drier makes its material solution send t the atomizing nozzle through the transportation tube, and finishes the heat and mass transfer course with the hot wind in the dry room after the nozzle is atomized, but the present spray drier has the problems of lower heat efficiency, not suiting the drying the material with biological activity, high requirement for the temperature and not uniform particle. The bottom part of the utility model at he dry room (4) is provided with a multi-hole plate (11) and a vector particle (16), and the multi-hole plate (11) and the vector particle (16) are communicated. The vector particle (16) is arranged at the multi-hole plate (11). The utility model takes advantages of reasonable design, finishing the heat and mass transfer course at the double working of the hot wind ad the hot vector particle by drying, high heat efficiency, and can finish drying at the lower temperature for the material with biological activity with uniform particle and small volume of the device.

Description

The carrier particle spray dryer

Technical field

The utility model relates to a kind of drying device, particularly a kind of carrier particle spray dryer, it belongs to drying equipment general, the chemical machinery industry, is applicable to the drying and the powder processing in fields such as biology, chemical industry, medicine, food, dyestuff, light industry and agricultural chemicals.

Background technology

Its structure of spray dryer as shown in Figure 1 in the prior art, it mainly by hothouse 1 ', hothouse discharger 2 ', atomizer 3 ' and hot-air inlet pipe 4 ' form, atomizer 3 ' be arranged on hothouse 1 ' top, hothouse discharger 2 ' be positioned at hothouse 1 ' the bottom; Hot-air inlet pipe 4 ' with the atomizer 3 that is positioned at hothouse 1 ' top ' communicate.During work, pump with feed liquid by feed liquid carrier pipe 5 ' deliver to atomizer 3 ', after atomizer 3 ' atomizing at hothouse 1 ' mix with hot blast, finish heat and mass transfer process, dried granular material is by hothouse discharger 2 ' discharge, and tiny granular material is by external separator 6 ' recovery.7 ' be the hot blast butterfly valve, 8 ' be compressed air hose, 9 ' be the waste gas fairlead, 10 ' be the separator discharger.Because the time of the spray dryer drying of this structure is very short, for reaching the dry requirement of powder product, the actual heating load of hot blast needs to cause the thermal efficiency not high apparently higher than the required heat of drying; To requiring to keep bioactive material, its bearing temperature is very low, generally is no more than 80 ℃, and the not even permission that has surpasses 50 ℃, and under low like this state of temperature, existing spray dryer can't be produced qualified products; Simultaneously, the effect that not broken grain is pulverized in its dry run, the particle size distribution of product is bigger, can not obtain the powder body material of uniform particle size; In addition, for guaranteeing to possess atomization and spouting liquid stability preferably, the necessary good nozzle of serviceability; And when hot blast temperature was lower than 150 ℃, the device therefor volume was bigger.

Summary of the invention

Technical problem to be solved in the utility model is to improve the thermal efficiency, makes the material of biologically active also can be dry at a lower temperature, and makes the granularity of powder product more even, reduces the performance requirement to nozzle simultaneously, and equipment volume is reduced.

The technical scheme in the invention for solving the above technical problem is in the bottom of hothouse porous plate and carrier particle to be set, porous plate communicates with hot air inlet, carrier particle is placed on the porous plate, makes feed liquid finish heat and mass transfer process under the double action of hot blast and heat carrier particle.

The said atomizer of the utility model can be positioned at the middle and lower part of hothouse, the top of porous plate, is connected with the feed liquid carrier pipe on atomizer, makes that feed liquid can be to the coating of carrier particle surface, intensified drying process.

The utility model is provided with settling section at the top of hothouse, makes the tiny and uniform powder product of formation can take hothouse smoothly out of.

Effect of the present utility model is that 1 thermal efficiency is higher: because the drying of material is to finish heat and mass transfer process under the double action of hot blast and heat carrier particle; 2 can dry biologically active material: because the raising of the thermal efficiency can be finished dry run under lower temperature, the temperature that material bore very low (even can below 50 ℃), thereby guarantee that biological activity is not destroyed; The particle of 3 gained powder products is more even: owing to invest the material on carrier particle surface, clash into mutually at carrier particle, come off under the rubbing action, carry out selection by winnowing again simultaneously, so have only less material to be taken out of hothouse; The performance requirement of 4 pairs of nozzles is lower: because the drying of material and fragmentation are mainly leaned on the effect of carrier particle, the effect of nozzle just is applied to feed liquid the surface of carrier particle, so use the atomizer of various principles can both obtain drying effect preferably; 5 equipment volume are less: owing to the air quantity that the carrier particle atomization drying is required is less, the thermal efficiency is higher simultaneously, so dwindled the volume of equipment.

Description of drawings

Fig. 1 is the structural representation of existing spray dryer.

Fig. 2 is a structural representation of the present utility model.

Fig. 3, Fig. 4 look cutaway view (part) and vertical view for the master of the utility model porous plate.

Fig. 5 looks cutaway view (part) for second kind of structure master of the utility model porous plate.

Fig. 6 is second kind of structure left view of the utility model porous plate.

Fig. 7 looks cutaway view (part) for the third structure master of the utility model porous plate.

Fig. 8 is the third structure left view of the utility model porous plate.

Fig. 9 looks cutaway view (part) for the 4th kind of structure master of the utility model porous plate.

Figure 10 is the 4th a kind of structure left view of the utility model porous plate.

The specific embodiment

Referring to Fig. 2, the utility model mainly is made up of hothouse 4, porous plate 11, carrier particle 16, atomizer 15 and hot-air inlet pipe 12, and amplify by a certain percentage than the bottom on hothouse 4 tops; Porous plate 11 is arranged at the bottom of hothouse 4, and it communicates with hot air inlet 12-1; Carrier particle 16 is placed on the porous plate 11, the round particle that this carrier particle 16 can select for use materials such as glass, pottery, polytetrafluoroethylene (PTFE) and aluminium oxide to make; Atomizer 15 can be positioned at the middle and lower part of hothouse 4, the top of porous plate 11, is connected with feed liquid carrier pipe 13 on atomizer 15, also can be connected with compressed air hose 14 as required, and the other end of feed liquid carrier pipe 13 is connected with infusion pump etc.; One end of hot-air inlet pipe 12 links to each other with the bottom hot air inlet 12-1 of hothouse 4, and the other end is connected with heating system by pipeline.

During use, hot blast enters hot air inlet 12-1 by hot-air inlet pipe 12, enter the zone at carrier particle 16 places through porous plate 11, carrier particle 16 is blown afloat and suspends into the form of similar liquid state, and feed liquid is delivered to atomizer 15 through feed liquid carrier pipe 13, be sprayed at carrier particle 16 surfaces after the atomizing, under the double action of hot blast and carrier particle 16, finish heat and mass transfer process.After investing the dry materials on carrier particle 16 surfaces, clash into mutually, rub and come off through carrier particle 16, form tiny and uniform granular material, by airduct by the hot blast band from hothouse 4, reclaim granular material through settling section 18 and separator 6, big slightly material then can continue to stay hothouse 4 and carry out fragmentation, up to obtaining thin powder product uniformly.

Whole dry run of the present utility model can be finished continuously, is fit to automated production, and keeps the drying of biologically active and heat sensitive material applicable to drying, the especially requirement of various materials.

In the present embodiment, feed liquid can be by one or more atomizers 15 to carrier particle 16 surface coatings.Multiple modes such as atomizer 15 available pressure formulas or air-flowing type atomize.Atomizer 15 can be sprayed onto on the carrier particle 16 from bottom to top, also can be sprayed onto from top to bottom on the carrier particle 16 in the carrier particle district.When atomizer 15 was sprayed onto on the carrier particle in the carrier particle district from bottom to top, the liquid stream or the air-flow of atomizer 15 ejections also had impetus to carrier particle 16, more help the suspension of carrier particle 16, and can intensified drying process.

Referring to Fig. 3, Fig. 4, this is a kind of structure of the utility model porous plate 11, and in this structure, wind blows from aperture 19 vertically upward, and the carrier particle 16 that will be positioned on the porous plate 11 blows afloat (see figure 2).

Referring to Fig. 5, Fig. 6, this is second kind of structure of the utility model porous plate 11, in this structure, is blown into the carrier particle zone to the wind direction spirality from side opening 20, and the carrier particle 16 that will be positioned on the porous plate 11 blows afloat (see figure 2).

Referring to Fig. 7, Fig. 8, this is the third structure of the utility model porous plate 11, and in this structure, wind is blown into the carrier particle zone in the same manner to both sides air quantity size from hole 20, and the carrier particle 16 that will be positioned on the porous plate 11 blows afloat (see figure 2).

Referring to Fig. 9, Figure 10, this is the 4th a kind of structure of the utility model porous plate 11, and in this structure, wind is blown into the carrier particle zone to the both sides air quantity with varying in size from hole 21, and the carrier particle 16 that will be positioned on the porous plate 11 blows afloat (see figure 2).

Claims

1, carrier particle spray dryer, comprise hothouse and atomizer, it is characterized in that: be provided with porous plate (11) and carrier particle (16) in the bottom of hothouse (4), porous plate (11) communicates with hot air inlet (12-1), and carrier particle (16) is placed on the porous plate (11).

2, carrier particle spray dryer according to claim 1 is characterized in that: set atomizer (15) can be positioned at the middle and lower part of hothouse (4), the top of porous plate (11), is connected with feed liquid carrier pipe (13) on atomizer (15).

3, carrier particle spray dryer according to claim 1 is characterized in that: be provided with settling section (18) at the top of hothouse (4).