CN206755745U - Helix tube type pneumatic drier - Google Patents

Abstract

It the utility model is related to a kind of helix tube type pneumatic drier, the machine includes heating furnace, spiral heating drier, centrifuge trash separator, three swirler formula discharger and air cleaning unit, wherein, the hot-blast outlet position of heating furnace is connected with spiral heating drier, pipeline communication is transported with fertilizer in the bottom side of spiral heating drier, transported in fertilizer on pipeline equipped with centrifugation trash separator, the air outlet of centrifugation trash separator is connected by connecting tube with three swirler formula discharger, and the air outlet of discharger is connected with air cleaning unit.The drying machine has the characteristics that good drying effect, speed are fast, utilization efficiency of heat energy is high, material drying free of losses, the drying drying especially suitable for industrial chemicals.And the gas discharged after dry materials after air cleaning unit purifies complies fully with environmental requirement up to 99.9%.The machine is applied widely, the drying drying available for various mineral products powders, chemical products powder.

Description

Helix tube type pneumatic drier

Technical field

The utility model belongs to drying materials equipment technical field, is a kind of spiral shell for being applied to miberal powder raw material and industrial chemicals Coil formula pneumatic drier.

Background technology

Pneumatic conveying drying is based on dry powdery or granular material, and its particle diameter is no more than 1mm, due to operating gas velocity is high, Drying time is short, applies in general to the constant rate of drying process of surface of material water evaporation.Pneumatic conveying drying is according to material form and characteristic Straight pipe type pneumatic conveyer dryer and impulse type pneumatic conveyer dryer can be divided, wherein, straight tube pneumatic conveying drying is to add wet feed by feeder Upright pipe, air blast fin heats device through air blower, upright pipe are blown into after being heated to certain temperature, and the speed in pipe determines In the size and density of wet granular, the particle dried is taken out of by strong air flow, is sent to two cyclone separators separation in parallel Out, sent out through auger conveyor, tail gas is then vented through bag filter.Requirement of this straight pipe type airflow drying to equipment Height, but the thermal efficiency is low.Pulsed pneumatic drying is that thicker separator tube is added on the basis of tube type pneumatic dryer, it is therefore an objective to Increase gas-particle two-phase relative movement so as to improve rate of drying, when in drying process, using caliber alternately reduce or Expand, make air-flow and particle makees variable speed flowing, air-flow and intergranular relative velocity and heat transfer area is all larger, so as to strengthen Heat and mass speed.But either straight pipe type drying machine or impulse air flow drier, have that volume is big, cost of manufacture is high Defect, and the pipeline of heat drying pipe is grown in machine, and usually 16 ~ 20 meters long, its is complicated, investment is more and substantial amounts of Heat energy is bled off in vain with the steam of discharge, and heat utilization rate is very low, and power consumption and drying cost are too high.Secondly, reclaimed in dust Aspect is that dust collecting fan drives dusty gas to enter dust-precipitator there is also problem, generally use sack cleaner, its operation principle Internal dirt room, air is discharged by becoming cleaning after filter bag by dust collecting fan, and dust is then prevented from, and adsorbs the appearance in filter bag Face, then controlled from pulse valve to filter bag inside and be blown gases at high pressure, dust is shaken off, into aggregate bin, by locking wind blanking Device is discharged.Using bag-type dust mode, first, the quantity of cloth bag used is more, because dust is easy to be adhered on cloth bag, one Aspect needs to remove the dust being adhered on cloth bag with powerful gases at high pressure, and power consumption is greatly；On the other hand due to high pressure gas The air quantity of body is big, in prolonged work, easily blows cloth bag bad, cloth bag once is blown bad, is not only changed cloth bag and is bothered, takes During expenses of labour, and dust is flown upward in the air from blowing to run out of in bad cloth bag, i.e., working environment is caused seriously to pollute.

The content of the invention

The purpose of this utility model is to provide a kind of easy to operate, and dependable performance simultaneously can be effectively saved the energy, and dry Dry efficiency high, material loss is small, do not lump, quality is good, cost is low, free of contamination helix tube type pneumatic drier.

Realize that the purpose of this utility model is adopted the technical scheme that：The drying machine includes heating furnace, spiral heating is done Dry device, trash separator, three swirler formula discharger and air cleaning unit are centrifuged, wherein, heating furnace uses coal-fired hot-blast stove, hot blast The hot-blast outlet position of stove is connected with spiral heating drier, and bottom side and the fertilizer of spiral heating drier transport pipeline Connection, transported in fertilizer equipped with centrifugation trash separator on pipeline, the air outlet for centrifuging trash separator passes through connecting tube and three swirler formula Discharger is connected, and the air outlet of three swirler formula discharger is connected with air cleaning unit.

The middle part of the coal-fired hot-blast stove is provided with upright baffle plate.

The spiral heating drier be by heat drying pipe, central inner pipe, spiral heating piece and blower unit into, heating Drying tube is stands up vertically, and lower nozzle is closed thereon, and central inner pipe is located in heat drying pipe, in the appearance of central inner pipe Face is provided with multiple tracks spiral heating piece, and forms spiral heating air channel by multiple tracks spiral heating piece, and the bottom of central inner pipe is stretched out Outside heat drying pipe, side connects with screw feeder, is connected at port with the air outlet of air blower.

The centrifugation trash separator uses top as the structure that cylinder bottom is conic tube, equipped with rotation in top cylinder body Rotating cage, rotation cage are connected and interlocked with the motor set at the top of cylinder, and Star-like unloader is housed in the bottom of conic tube.

The three swirler formula discharger is made up of three whirlwind for being arranged in order connection discharging cylinders, in each cylinder It is respectively provided with whirlwind inner cylinder, is connected respectively by wind pipe at the top of cylinder, the exit of cylinder body bottom can installs star-like respectively Discharger, the spiral batch mixing discharger connected each other, the spiral can be also set at the outlet at bottom of three whirlwind discharging cylinders Batch mixing discharger is horizontally disposed tubular structure, and helical mixing blade is provided with cylinder, and discharging is housed in one end of discharger Motor, the other end are discharge outlets.

The air cleaning unit is by purification dust-collecting cylinder, blast pipe, water pump, feed pipe, overflow pipe, dust flue, air inducing Machine, airduct, gas-liquid cyclone pipe composition, wherein, the air inlet of air-introduced machine connects with the wind pipe of whirlwind discharging cylinder, air-introduced machine Air outlet connected by airduct with gas-liquid cyclone pipe, gas-liquid cyclone pipe positioned at purification dust-collecting cylinder top, its export and purification Dust-collecting cylinder is connected, and blast pipe is provided with purification dust-collecting cylinder, and the upper end of blast pipe is stretched out outside purification dust cover, purifies dust-collecting cylinder Bottom is fluid reservoir, and its outside side is connected with water pump, and water pump is connected by feed pipe and the gas-liquid cyclone pipe on top, purification collection Overflow pipe is provided with the outside of the middle part of dirt cup, the bottom of the pipe connects with dust flue.

It is arc that one-level gas-liquid deflector and two level gas-liquid deflector, two-stage deflector are provided with the gas-liquid cyclone pipe Plate.

Water storage in the purification dust-collecting cylinder is highly less than the bottom of blast pipe.

It is reasonable in design according to helix tube type pneumatic drier made of such scheme, the length of its heat drying pipe 6~8 meters are only needed, is the 1/3 of traditional heating drying tube, but operating efficiency is dried than traditional straight tube and impulse drying is higher by 30% More than, drying drying time is thus substantially shorter, reaches the practical function for saving the energy.Its advantage is：

1st, pneumatic drier of the present utility model, the thermal efficiency is high, and drying time is short, and treating capacity is big, and dry tenacity is big, can connect Reforwarding turns.It evaporates moisture content ability can be from 50kg/h -2000kg/h, and volume of equipment is small, and floor space is small, reduced investment, can Investment reduction 60%, be other drying equipments it is incomparable.

2nd, pneumatic drier of the present utility model, simple in construction, compact, small volume, production capacity is big, suitable for loose Shape, viscosity are small, finished product is powdery and the granular materials of 0.01~3mm.And material is dried in the duct entirely, its finished product Do not contacted with the external world, pollution-free, quality is good, failure Shao ﹑ maintenance cost Di ﹑ are low in energy consumption.

3rd, unit process joint operations such as dry, conveying, recovery, purifications in Air Dried System, process simplification is simultaneously It is easy to automatically control, makes the uniformity of product drying good, material during heating, due to using plural serial stage flow, therefore leads to The resistance of crossing heat drying pipe or eddy flow cylinder is small, operates steadily, and with material is lossless, do not lump, quality is good, low consumption Can, the features such as high efficiency is easy to operate, dependable performance, and drying cost is low.

4th, good purification, after air cleaning unit is handled, the purification of air index of discharge can reach dust-contained airflow 99.9%, reach without dust emission, pollution-free, the good practical function of environment protecting.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

Referring to Fig. 1, helix tube type pneumatic drier of the present utility model, including heating furnace 1, spiral heating drier, from Heart trash separator 7, three swirler formula discharger 12 and air cleaning unit, wherein, heating furnace 1 uses coal-fired hot-blast stove, in fire coal The middle part of hot-blast stove is provided with upright baffle plate 1-1.Thermal current can be made to form vortex, promote coal ash to sink.The hot blast of hot-blast stove 1 goes out Oral area position is connected with spiral heating drier, and the spiral heating drier is added by heat drying pipe 2, central inner pipe 3, spiral Backing 4 and air blower 5 form, and heat drying pipe 2 is stands up vertically, and lower nozzle is closed thereon, and central inner pipe 3 is positioned at heating In drying tube 2, multiple tracks spiral heating piece 4 is provided with the outer surface of central inner pipe 3, and spiral shell is formed by multiple tracks spiral heating piece 4 Heating air duct is revolved, the bottom of central inner pipe 3 is stretched out outside heat drying pipe 2, and the air outlet at port with air blower 5 connects, sidepiece With screw feeder（It is to show in figure）Connection, the screw feeder are known commercial products, and here is omitted.Using this The structure setting of spiral heating drier, the drying time of material can be extended, and can expands drying area.Spiral heating is dried The bottom side of device connects with material conveying pipe 6, equipped with centrifugation trash separator 7, the centrifugation trash separator on material conveying pipe 6 7 use top as the structure that cylinder bottom is conic tube, equipped with rotation cage 9 in top cylinder body, rotate cage 9 and cylinder The motor 8 that top is set is connected and interlocked, and by rotating the effect of cage 9, can be centrifuged out the bulky grain in material Come.Star-like unloader 10 is housed in the bottom of conic tube.The air outlet of centrifugation trash separator 7 is unloaded by connecting tube and three swirler formula Glassware 12 is connected, and the three swirler formula discharger 12 is made up of three whirlwind for being arranged in order connection discharging cylinders, each Whirlwind inner cylinder 11 is respectively provided with cylinder, is connected respectively by wind pipe 14 at the top of cylinder, the exit of cylinder body bottom can be divided Star-like unloader is not installed, the spiral batch mixing discharging connected each other can be also set at the outlet at bottom of three whirlwind discharging cylinders Device 15, the spiral batch mixing discharger 15 are horizontally disposed tubular structure, helical mixing blade are provided with cylinder, in discharger One end is equipped with discharging motor 16, and the other end is discharge outlets 17.The air outlet of the three swirler formula discharger 12 and sky Air purifying apparatus connects, and the air cleaning unit is by air-introduced machine 18, airduct 19, gas-liquid cyclone pipe 20, blast pipe 21, feed pipe 22nd, dust-collecting cylinder 23, water pump 24, overflow pipe 25, dust flue 26, composition are purified, wherein, air inlet and the whirlwind of air-introduced machine 18 unload The wind pipe 14 of barrel body is connected, and the air outlet of air-introduced machine 18 is connected by airduct 19 with gas-liquid cyclone pipe 20, gas-liquid eddy flow One-level gas-liquid deflector 20-1 and two level gas-liquid deflector 20-2 is provided with pipe 20, two-stage deflector is arc.Gas-liquid is revolved The outlet of flow tube 20 is connected with purification dust-collecting cylinder 23, and blast pipe 21 is provided with purification dust-collecting cylinder 23, and the upper end of blast pipe 21 is stretched out Outside purification dust-collecting cylinder 23 covers, the bottom of purification dust-collecting cylinder 23 is fluid reservoir, and its outside side is connected with water pump 24, and water pump 24 passes through Feed pipe 22 is connected with the gas-liquid cyclone pipe 20 on top, is purified and is provided with overflow pipe 25, the bottom of the pipe on the outside of the middle part of dust-collecting cylinder 23 Portion connects with dust flue 26.Water storage in the purification dust-collecting cylinder 23 is highly less than the bottom of blast pipe 21.

Operation principle：Turn into the hot-air with certain temperature after the heated stove of natural air, hot-air has

Higher heat, its thermal current formed have higher flow velocity, and velocity heated gas enters spiral shell by hot air duct Heat is delivered on spiral heating piece 4 through tube wall after revolving the central inner pipe 3 of heat drier, wet stock is sent by self-conveyor feed After to the central inner pipe 3 of spiral heating drier with the hot-air after heating in the presence of air blower 5, while add into spiral Heat drier, the two is sufficiently mixed, and rises with air-flow from central inner pipe 3, enters spiral duct from top, with passing through dry heat Hot-air in pipe 2 is into co-current contact or adverse current or is effectively contacted and is dried with spiral heating wall, in drying process In, by the multiple tracks spiral heating piece 4 of setting, the drying time of material can be extended, and drying area is expanded, due to caloic Exchange area is big, greatly enhances the thermal interface of material, and material improves rate of drying by means of hot-air, in spiral plus In heat drier, material rises because being formed dispersed by swiftly flowing hot air impingement with air-flow from central inner pipe 3, from Top enters spiral duct, and carry material by hot-air forms screw in heat drying pipe 2 along tube wall, and material is in gas It is uniformly distributed in stream and rotation disturbance, material is sufficiently mixed, contacted with hot-air and during mixed phase flows, enhance dry Dry process, and be allowed to contained humidity evaporation, remove and dried.Entered by dry material from outlet through material conveying pipe 6 Trash separator 7 is centrifuged, for material in the presence of cage 9 is rotated in centrifuging trash separator 7, large granular materials and impurity pass through trash separator bottom Discharger 10 discharge, entered by dried material in three swirler formula discharger 12 through three-level in the presence of its thermal current After dedusting, dried material is discharged by the thread mixing discharger 15 of bottom after three-level is well mixed, and carries the gas of dust Flow then by the top of last three swirler formula discharger 12 through the air inlet purifier of wind pipe 14, and by the device Air-introduced machine 18 by dust-contained airflow be introduced into purification dust-collecting cylinder 23 in, in the presence of dust-collecting cylinder 23 is purified, dust is adsorbed with water Enter to purify the bottom of dust-collecting cylinder 23, and collected outside is drained into by outlet and is recycled utilization, the hot blast emptying after dedusting, from exhaust The top discharge of pipe 21.

Above-mentioned visible, water-containing materials dry in drying machine of the present utility model by spiral dryer and Multi-stage spiral It is dry, and Multi-stage spiral drying is entirely to be carried out using the residual heat air current of spiral drying tube drying, thus with good drying effect, The features such as speed is fast, utilization efficiency of heat energy is high, material drying free of losses.The drying machine not only baking especially suitable for industrial chemicals It is dry, and the drying to viscosity less graininess, powder-material has higher efficiency.Due to its high efficiency, the spy of low energy consumption Point, the drying machine could be applicable to the drying of the High water cut material of moisture content more than 90%, can first drying finished product.It is meanwhile logical The rotating speed and the size of air blower wind-force and the height of air inlet wind-warm syndrome of adjustment spiral dryer are crossed, preferable thing can be reached Expect oven-dried condition, optimal drying effect can be reached, be not in thickener phenomenon again.And purified by air cleaning unit The gas discharged afterwards complies fully with environmental requirement up to 99.9%.The machine is applied widely, available for various mineral products powders, changes The drying drying of chemical product powder.

Claims (8)

1. A kind of 1. helix tube type pneumatic drier, it is characterised in that：The drying machine includes heating furnace, spiral heating drier, from Heart trash separator, three swirler formula discharger and air cleaning unit, wherein, heating furnace uses coal-fired hot-blast stove, the heat of hot-blast stove Wind exit site is connected with spiral heating drier, and bottom side and the fertilizer of spiral heating drier transport pipeline communication, Fertilizer is transported equipped with centrifugation trash separator on pipeline, and the air outlet for centrifuging trash separator is connected by connecting tube and three swirler formula discharger Connect, the air outlet of three swirler formula discharger is connected with air cleaning unit.
2. 2. helix tube type pneumatic drier according to claim 1, it is characterised in that：Set in the middle part of the coal-fired hot-blast stove There is upright baffle plate.
3. 3. helix tube type pneumatic drier according to claim 1, it is characterised in that：The spiral heating drier be by Heat drying pipe, central inner pipe, spiral heating piece and blower unit are into heat drying pipe is stands up vertically, and lower nozzle is thereon Closed, central inner pipe are located in heat drying pipe, and multiple tracks spiral heating piece is provided with the outer surface of central inner pipe, and by more Road spiral heating piece forms spiral heating air channel, and the bottom of central inner pipe is stretched out outside heat drying pipe, side and screw feeder Connect, connected at port with the air outlet of air blower.
4. 4. helix tube type pneumatic drier according to claim 1, it is characterised in that：The centrifugation trash separator uses top For the structure that cylinder bottom is conic tube, set in top cylinder body equipped with rotation cage, rotation cage with cylinder top Motor is connected and interlocked, and Star-like unloader is housed in the bottom of conic tube.
5. 5. helix tube type pneumatic drier according to claim 1, it is characterised in that：The three swirler formula discharger is It is made up of three whirlwind for being arranged in order connection discharging cylinders, whirlwind inner cylinder is respectively provided with each cylinder, cylinder top is respectively Connected by wind pipe, the exit of cylinder body bottom can install Star-like unloader respectively, also can be in three whirlwind discharging cylinders Outlet at bottom at the spiral batch mixing discharger that connects each other is set, the spiral batch mixing discharger is horizontally disposed tubular knot Structure, helical mixing blade is provided with cylinder, discharging motor is housed in one end of discharger, the other end is discharge outlets.
6. 6. helix tube type pneumatic drier according to claim 1, it is characterised in that：The air cleaning unit is by net Change dust-collecting cylinder, blast pipe, water pump, feed pipe, overflow pipe, dust flue, air-introduced machine, airduct, gas-liquid cyclone pipe form, wherein, draw The air inlet of blower fan is connected with the wind pipe of whirlwind discharging cylinder, and the air outlet of air-introduced machine is connected by airduct and gas-liquid cyclone pipe Logical, positioned at the top of purification dust-collecting cylinder, it is exported is connected gas-liquid cyclone pipe with purification dust-collecting cylinder, and exhaust is provided with purification dust-collecting cylinder Pipe, the upper end of blast pipe are stretched out outside purification dust cover, and the bottom for purifying dust-collecting cylinder is fluid reservoir, and its outside side is connected with water Pump, water pump are connected by feed pipe and the gas-liquid cyclone pipe on top, are purified and are provided with overflow pipe on the outside of the middle part of dust-collecting cylinder, the pipe Bottom connects with dust flue.
7. 7. helix tube type pneumatic drier according to claim 6, it is characterised in that：One is provided with the gas-liquid cyclone pipe Level gas-liquid deflector and two level gas-liquid deflector, two-stage deflector are arc.
8. 8. helix tube type pneumatic drier according to claim 6, it is characterised in that：Water storage in the purification dust-collecting cylinder Highly it is less than the bottom of blast pipe.