CN2191398Y

CN2191398Y - Whirlwind flash drier

Info

Publication number: CN2191398Y
Application number: CN 93228806
Authority: CN
Inventors: 王德福; 杨玉生; 张耀文
Original assignee: SANYOU DRYING EQUIPMENT FACTORY SHENYANG CITY
Current assignee: SANYOU DRYING EQUIPMENT FACTORY SHENYANG CITY
Priority date: 1993-07-23
Filing date: 1993-07-23
Publication date: 1995-03-08
Anticipated expiration: 2003-07-23

Abstract

The utility model relates to a whirlwind flash drier, which belongs to a high-speed airflow drier. The utility model is characterized in that two paths of hot wind are respectively blown into a tower from both sides of the bottom of a drying tower along a tangential direction; filtering cake-shaped or paste materials can be directly loaded into the tower; the materials can be blown upwards by hot air and rises in a suspended state after crushed by a secondary crushing device; the materials can sufficiently contact with the hot air, so the drying process can be achieved instantly, and the time is form less than one second to a plurality of seconds; the materials can be discharged form the tower top after being dried.

Description

Whirlwind flash drier

The utility model relates to a kind of quick pneumatic conveying dryer.

At present domestic having can directly install to the equipment that carries out drying in the drying machine with filter cake shape or plaster material, but because reasons such as its structure, drying effect is not ideal enough.For example: general drying machine is only adorned a hot-wind inlet, in drying tower, often have like this hot blast blow less than the dead angle, and cause solid accumulation, drying effect is bad.Because it is material only carries out fragmentation by destroyer one revolving vane of machine bottom, very insufficient in addition, stick with paste blade at the bottom of causing material to fall into tower, machine can not be run well.Above reason all makes drying effect not reach standard-required, and machine also breaks down easily.

The purpose of this utility model just provide a kind of can not occur hot blast blow less than dead angle, the phenomenon of piling up material, abundant broken material makes it the better equipment of drying effect again.

The purpose of this utility model is achieved in that the hot-wind inlet opposite at existing equipment, increases a hot-wind inlet, and where material does not all have the possibility of accumulation like this, and has increased heat exchanger effectiveness.Meanwhile, set up a material scraper in the end of feeding screw, made material be spread to small pieces in entering drying tower, this is first order fragmentation, and in the time of afterwards at the bottom of material drops down onto tower, the revolving vane by destroyer carries out second level fragmentation again.Improvement through such has not only improved product yield, and drying effect also is significantly improved than general drying machine, not only can reach dry standard-required fully, and can save energy 30-50%.

Below in conjunction with accompanying drawing its structure and operation principle are elaborated.

Fig. 1 is a cyclone type expansion drying schematic diagram.

Fig. 2 is a whirlwind flash dryer A-A profile.

From Fig. 1 and Fig. 2, can find out, tangentially be separately installed with hot-wind inlet (3) and (12) in the two bottom sides of drying tower (7). Having so simultaneously the two-way hot blast tangentially to pass through hot air chamber (11) from hot-wind inlet (3) and (12) respectively is blown in the drying tower (7). Material Packed into by material inlet (1), sent in the drying tower by screw feeder (2). In the end of feeder (2) material scraper being housed is first order destroyer (9), makes material be spread to small pieces in the exit of feeder (1), namely carries out the broken processing of the first order. The material that falls is carried out the fragmentation second time and is become Powdered by destroyer (10), the hot blast that is blown into then in the tower blows afloat, material is suspended state and rises, the material that rises that suspends fully contacts with hot blast in hothouse (8), instantaneous time is finished dry run, be the lightening evaporation of so-called moisture, required time only several seconds zero point between several seconds. Dried material is discharged by the material outlet (5) at drying tower top, and surpass the thicker material particles of regulation because the effect of centrifugal force, blocked by coarse fodder baffle plate (6), again be down at the bottom of the tower, participate in again above-mentioned second level fragmentation and dry run. The material of being discharged by outlet (5) becomes product after separating, collecting.

The characteristics of this device are: the first, and the two-way hot blast. Tangentially be blown into simultaneously in the drying tower two bottom sides, in tower, form the ascending air of High Rotation Speed, so be called cyclone type. The second, twice fragmentation. For filter cake shape or plaster pasty materials, this device can carry out abundant fragmentation by two stage crusher in drying tower, thereby can directly import for the material of above-mentioned state and to carry out drying in the tower.

Except These characteristics, this machine also has following advantage: 1, material particles disperses in the ascending air high speed, adopts simultaneously the high temperature drying medium, and intensified drying process is so drying time is short, speed is fast, so claim flash dryer. Its thermal efficiency is high, is that other drying equipments can not be compared. 2, because rate of drying is fast, wink-dry, the material heated time is short, and self-temperature is lower, does not destroy the chemical property of material. 3, dry run is totally enclosed, and free from admixture is sneaked into, the product purity height. And product does not leak, and can reduce loss of material. So both improved operating condition, also pollution-free to surrounding environment. 4, be applicable to large-scale production, work continuously, easy to operate.

Constitute having of corollary system with this device: hot-blast stove is used for producing the device of hot blast; Cyclone separator is used for dried material is carried out the device of separated and collected; And charger etc.

This device is fit to the drying to powdery, graininess, filter cake shape, cream pasty state and muddy material.Be widely used in industries such as mineral products, chemical industry, light industry, food, medicine.For example: rare earth, dyestuff, kaolin, orange peel mandarin orange, white carbon, vanadic anhydride, zinc sulfate, magnetic material, activated zinc oxide or the like.

Embodiment: its integrally-built major part of this drying machine is made by steel plate or corrosion resistant plate welding.In drying tower, make by stainless steel with the contacted part of material.This apparatus structure is simple, reasonable, is more advanced drying equipment.

Be to use the parameter of materials after the XF-600 type cyclone type flash dryer below, comparison for reference.

Representative instance (XF-600 type)

Material	First moisture percentage (%)	Whole moisture percentage (%)	Wind-warm syndrome (℃)	Water removal (kg/h)	Finished product output (kg/h)
						White carbon	40	1	300	200	300
Vanadic anhydride	42	0.6	300	200	280
						Zinc sulfate	43	1.3	300	200	280
Dyestuff	75	3	160	80-100	30-40
						Rare earth	45	2	300	150-200	200-260

Claims

A kind of cyclone type flash dryer belongs to quick pneumatic conveying dryer, mainly is made up of spiral heater (2), drying tower (7), grinder (10) etc., it is characterized in that:

A. the two bottom sides at drying tower (7) tangentially is separately installed with hot-wind inlet (3) and (12);

B. in the end of feeding screw (2) first level flour millstone (9) is housed.