CN2215104Y

CN2215104Y - Rotary flashing drier

Info

Publication number: CN2215104Y
Application number: CN 94202106
Authority: CN
Inventors: 高炎武; 李晓波; 崔玺民; 李迪斌; 李树海
Original assignee: Jilin Chengxi Machinery Works
Current assignee: Jilin Beifang drying equipment factory
Priority date: 1994-01-22
Filing date: 1994-01-22
Publication date: 1995-12-13
Anticipated expiration: 2004-01-22

Abstract

The utility model relates to a rotary flashing drier, belonging to the field of a drying machine. The utility model develops a late-model drier which can directly dry filter cakes, aiming at the present status of larger energy consumption and bad drying production quality of the drier in current chemical industry field. The utility model is composed of a drying main tower and a feeder, wherein, the drying main tower is composed of a hot air distributor with a spiral annular chamber, etc. A plurality of layers of pulverization rods are arranged on the vertical shaft of the drying main tower; the bottom of a drying chamber can be processed into a structural shape of a back taper bottom; a spiral conveyer can adopt the structure of a single screw rod and a screw pitch; a plurality of resistance strips are parallel arranged in the sleeve barrel of the conveyer. The drier has the advantages of energy saving, good drying production quality, no overheat, etc.

Description

Rotary flashing drier

The utility model belongs to the drying machine field.

Domestic and international market constantly increased H-acid powder product demand in recent years, with regard to a dyestuff factory, expanded production 2600 tons/year by original 800 tons/year.The technology of original production H-acid powder is to take spray drying tower, and the every dry one ton of H-acid powder of this tower needs 688 meters ³Coal gas, annual 53 myriametres that need ³Coal gas.Produce 2600 tons of/year H-acid powder and then need 180 myriametres ³Coal gas, general producer can't solve the coal gas of so big quantity.The main cause that the spray drying tower energy consumption is high is need be moisture 40% the filter cake suspension of thin up agent moisture 70% again, and then original water and the water added are all evaporated in tower; The old technology of dry in addition 2:3 acid mainly adopts rake type dryer to exist overheated in dry run and the coking phenomenon, makes the outward appearance obfuscation, and powder has the black splotch of larger particles, and purity only is 85%, and efficient is also lower.

The purpose of this utility model is at above-mentioned situation, developed a kind of the needs to add the novel Rotatingandflashstreamingdrier that water can directly carry out filter cake drying, energy savings again in filter cake.

The utility model is to take following technical scheme to carry out, and the structure of Rotatingandflashstreamingdrier is to take knockdownly, is made up of king-tower and feeder.King-tower is made up of hot-air distributor, grinder, screw feeder and inlet, reductor, motor, hot-wind inlet, wind exhausting outlet, clasfficiator.Wherein hot-air distributor is made up of a spiral doughnut, hot blast is tangent line and flows into this chamber, this doughnut bottom has an annular space (H) that the hot blast of inflow hothouse bottom is rotated strongly, at the bottom of back taper, spiral rises and forms an obvious speed gradient, the lower curtate hot blast rate of climb is the highest, material has not been pulverized with dry before sinking to the bottom, be connected at the bottom of the back taper of hot-air distributor bottom with drying tower, thermal wall is arranged in the hot-air distributor, and the lower end of wall has cooling structure (water or air-cooled) to be bonded on the wall to prevent material.

The reducing mechanism of hothouse bottom is to be made of a vertical shaft, and several paired pulverizing bars (paddle) are housed above it.In order to mix and to pulverize wet stock and guarantee particle, do not stop the long time in the hothouse high-temperature region, pulverize at the bottom of bar and the chamber and locular wall has all designed rational gap.Between shaft and hothouse bottom good sealing device is arranged.Shaft has air-cooled structure, and the bearing block of water-cooled is installed below sealing device, and the vertical shaft that passes bearing block is driven by a cycloid speed reducer and motor.Speed is controlled in the 200-600 rev/min of scope.

Design has feeder and hot-wind inlet in cylindrical drying chamber, settles clasfficiator on hothouse top, and the top has air outlet slit.

The feeder effect is various pastes, filter cake etc. can not free-pouring block wet feed to be become continuous, quantitative, controlled materials flow connect and constantly flow to Rotatingandflashstreamingdrier, feeder of the present utility model mainly by mixing channel, agitator, auger conveyor, cycloid speed reducer, motor, conveyer sleeve, carry reductor and several sections such as motor, fixed teeth to form.The agitator of mixing channel mainly is tentatively to pulverize and take off flat material, certain interval should be arranged between stirring vane and form certain angle to prevent that bonding is to guarantee normal force feed material on blade with axle, the effect of fixed teeth is to block material does not drop on mixing channel conveyer sleeve with the agitator rotation opening part.Auger conveyor drives with variable-frequency motor, screw conveyor shaft is taked single screw rod coarse pitch structure, prevents that material is squeezed and piles up the parallel drag strip that is placed with some in the conveyer sleeve at the conveyer sleeve, its effect is to increase radial friction, forces material to move vertically.

Adopt Rotatingandflashstreamingdrier can make the quality of material that is dried that tangible change is arranged.Be light yellow uniform powder such as the 2:3 acid outward appearance of using this drying machine drying, the superfine no black splotch of particle, purity is 88.8%, has reached high-quality 2:3 acid product, can satisfy the needs of foreign exchange earning.Four the existing rake type dryers in workshop, Ji Hua company dyestuff factory all change Rotatingandflashstreamingdrier into and can obtain higher benefit as a result as calculated:

1, the joint industry water is worth 11.48 ten thousand yuan/year, and 2, economize on electricity is worth 1.32 ten thousand yuan/year, 3,0.96 ten thousand yuan/year of energy-conservation value, 4, increase the 2:3 acid value and be worth 2,178 ten thousand yuan/year, 21,970,000 yuan/year of total values.

Adopt the dry H-acid of Rotatingandflashstreamingdrier powder can save a large amount of coal gas every year, save a lot of spendings for country.

Figure of description is an embodiment schematic diagram of technical solutions of the utility model, wherein Fig. 1 is a combined type machine shape structure chart, and Fig. 2 is the partial cross sectional views of dry king-tower, and Fig. 3 is the vertical view of drying tower, Fig. 4 is a feeder structural profile view, and Fig. 5 is the vertical view of Fig. 4.

1 drying machine king-tower among the figure, 2 feeder main bodys, 3 insulation materials, 4 hot-air distributors, 5 grinders (agitator), 6 screw feeders inlet, the pure device reductor of 7 powder, 8 grinder motors, 9 hot-wind inlets, 10 wind exhausting outlets, 11 clasfficiators, 12 thermal wall cooling structures, the pure bar of 13 powder, 14 sealing devices, 15 bearing blocks, 16 mixing channels, 17 agitators, 18 auger conveyors, 19 stir reductor, 20 stirring motors, 21 conveyer sleeves, 22 carry reductor, 23 carry motor, 24 fixed teeth, 25 stirring vanes, 26 drag strips, 27 back taper tagmas, 28 annular spaces, 29 vertical shafts.

Below in conjunction with the embodiment accompanying drawing the technical solution of the utility model further is illustrated:

Want dry material (filter cake, paste suspension etc.) to be added in the feeder apparatus of drier (Fig. 4, Fig. 5), the primary structure of feeder is by mixing channel (16) agitator (17), auger conveyor (18) conveyer sleeve (21), cycloid pin decelerator (19), motor (20), fixed teeth (24), stirring vane (25) is carried reductor (22), drag strip (26) carries motor (23) to form.Need dry material to be stirred in the mixing channel (16) that blade (25) is grilled into auger conveyor (18).Have certain interval between stirring vane, and form certain angle with axle, the effect of fixed teeth (24) is to block material is fallen mixing channel conveyer sleeve in whipping process opening part.Auger conveyor drives with variable-frequency motor (20), and auger conveyor (18) is taked single screw rod coarse pitch structure.The parallel drag strip (26) that is placed with some in conveyer sleeve (21), its effect are to increase radial friction, force material to move vertically.Continuously give the drying machine king-tower with mass transport.The drying machine king-tower is by hot-air distributor (4), grinder (5), vertical shaft (29), screw feeder inlet (6), grinder reductor (7), grinder motor (8), hot-wind inlet (9), wind exhausting outlet (10), clasfficiator (11), thermal wall cooling structure (12), pulverizing bar (13), sealing device (14), water cooled bearing seat (15) is formed.By charge door (6) material is added in the hothouse, pulverize by grinder (5), pulverizing and drying are mainly carried out in hothouse.Carry out air stream that dry powder material is rotated with the spiral hothouse napex of delivering to, by wind exhausting outlet (10) with its discharge.

The continuous operation principle of this machine is following current and convective drying.Humidity and denseness in the time of making initial material not begun by it limit, in seconds with dry materials beading powder.

Which floor has been installed on the vertical shaft in hothouse (29) has pulverized bar (13), therefore a large amount of materials is directly pulverized, and not pulverized partial material is abutted against above the drier base pulverizing bar in back taper tagma (27) and catches and spread out in hothouse, then by from hot-air distributor (4), by annular space (28) blow over thermal air current again not pulverized partial material shift onto hothouse above, distributor (4) is by a spiral doughnut in the heat, hot blast is tangent line and flows into, one annular space (28) is arranged at this distributor bottom, and the hot blast that flows into the hothouse bottom is rotated strongly.Be connected at the bottom of the back taper of hot-air distributor bottom with drying machine, thermal wall is arranged in the hot-air distributor, there is thermal wall cooling structure (12) lower end of wall, is bonded on the wall to prevent material.Arrive the interior hot-air of hothouse flows through the hothouse inner chamber with the rate of climb of 3-5M/S top, flow out hothouse at the top with the tangent line form, heat air pressure is reduced to the 250-450 millimeter of water, the material that makes hot blast like this and be dried is located strong mixing at annular space (28), make it in hothouse, just carry out very strong mass transfer, diabatic process, thereby make the hurried decline of material rapid draing hot blast temperature.Because the dry run more than 95% is all in seconds carried out.Material do in the spiralling process moist, thick, heavy, granule is thrown on the outer wall owing to centrifugal action and turn back to hothouse.Thin, light, do, particle is pumped to outside the hothouse by clasfficiator (11) and with the fastest time because of cyclonic action, this preferred process of material has produced multiple effect, the granular size distributed uniform, the residue moisture content is even, and product has can be overheated.

Claims

1, a kind of Rotatingandflashstreamingdrier is made up of dry king-tower and two parts of feeder, and wherein feeder is made up of mixing channel, agitator, auger conveyor, conveyer sleeve, cycloid pin decelerator, motor, fixed teeth, stirring vane, conveying reductor, conveying motor; Dry king-tower is a hot-air distributor, grinder, and vertical shaft, screw feeder, the grinder reductor, the grinder motor, hot-wind inlet, wind exhausting outlet, clasfficiator, thermal wall cooling structure are pulverized bar, sealing device, the water-cooled bearing is formed and be it is characterized in that:

Have certain interval between the stirring vane of a, feeder, and and axle form a certain angle, auger conveyor is taked single screw rod, coarse pitch structure, parallelly in the conveyer sleeve is placed with some drag strips;

Several layers is installed on b, the vertical shaft in hothouse to be pulverized bar and with hothouse bottom processing back taper planform, forms the back taper tagma;

The hot-air distributor of c, dry king-tower is by a spiral doughnut, in this device bottom one annular space is arranged, and is connected by annular space at the bottom of the back taper of hot-air distributor bottom with drying machine.

2, a kind of Rotatingandflashstreamingdrier as claimed in claim 1 is characterized in that having thermal wall in hot-air distributor, and the lower end of wall is equipped with the thermal wall cooling structure.