CN101334232A - Rotary drying device suitable for high moisture material - Google Patents

Rotary drying device suitable for high moisture material Download PDF

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Publication number
CN101334232A
CN101334232A CNA2008101352534A CN200810135253A CN101334232A CN 101334232 A CN101334232 A CN 101334232A CN A2008101352534 A CNA2008101352534 A CN A2008101352534A CN 200810135253 A CN200810135253 A CN 200810135253A CN 101334232 A CN101334232 A CN 101334232A
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CN
China
Prior art keywords
lifting blade
cylindrical shell
zone
cylinder
moisture
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CNA2008101352534A
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Chinese (zh)
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CN100585312C (en
Inventor
刘怀平
何美华
吉文清
王加东
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江苏科行环境工程技术有限公司
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Priority to CN 200810135253 priority Critical patent/CN100585312C/en
Publication of CN101334232A publication Critical patent/CN101334232A/en
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Publication of CN100585312C publication Critical patent/CN100585312C/en

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Abstract

The invention provides a rotary type dryer which is suitable for high moisture materials. The dryer comprises a cylinder body, a driving device and a riding wheel device; a preheating zone, a baking zone and a drying zone are successively divided in an inner cavity of the cylinder body from head to tail; a plurality of lifting blades I rearward inclined with the bus of the cylinder body, a lifting blade II perpendicular to the bus of the cylinder body, a lifting blade III frontward inclined with the bus of the cylinder body and a lifting blade IV rearward inclined with the bus of the cylinder body are respectively arranged on the inner walls of the cylinder bodies of the preheating zone, the front zone and rear zone of the baking zone and the drying zone, and a plurality of the gammadia lifting blades with crisscross brackets are arranged in the cylinder body of the drying zone; a plurality of arch breaking chains, the two ends of which are fixed with the inner wall of the cylinder body, are arranged on the inner wall of the cylinder body. The rotary type dryer has the advantages that the dry processing can be directly performed to the high moisture materials, the equipment investment and the occupied area are effectively reduced, the processing period is shortened, the secondary pollution is avoided, the energy consumption and the operating cost are decreased, the moisture content can be decreased to 3 to 5 percent after the dry processing, and the dry processing effect is good.

Description

A kind of rotary dryer that is applicable to high moisture material
Technical field
The present invention relates to a kind of drying plant that is used for water-containing materials, particularly a kind of rotary dryer that is applicable to oven dry such as industry high-moisture raw material such as building materials, chemical industry, papermaking and solid waste.
Background technology
At present, in industries such as building materials, chemical industry, papermaking, be used for raw material and discarded object drying plant and mainly contain monotubular rotary dryer, bitubular rotary dryer, three rotary dryers and tower drier.Existing drying plant has comparatively strict requirement to the initial moisture of material, as the monotubular rotary dryer, when the initial moisture of waiting to dry material greater than 25% the time, equipment just is difficult to it is dried operation, even can't move; Tower drier, bitubular rotary drying machine, three rotary drying machines are to the strictness more of the initial moisture requirement of material, having certain viscosity to wait to dry the initial moisture of material generally speaking must not be greater than 15%, inviscid graininess or powdery wait to dry the initial moisture of material must not be greater than 20%, otherwise the oven dry operation can't be carried out.Therefore, when adopting existing drying plant to dry operation to containing the higher material of moisture, needing to carry out press filtration or centrifugation earlier before the oven dry operation handles, remove portion of water, carry out airing then and handle, when waiting that the moisture content of drying material reaches the desired initial water timesharing of drying plant, dry operation again, like this, increased the equipment input, and floor space is big, long processing period, easily produce secondary pollution, energy consumption and operating cost height.
Summary of the invention
Technical problem to be solved by this invention is, can not directly dry the deficiency of operation to high-moisture (〉=25%) material at existing drying plant, a kind of rotary dryer that is applicable to high moisture material (25%~85%) is provided, drop into and floor space with minimizing equipment, shorten the processing cycle, avoid secondary pollution, cut down the consumption of energy and operating cost.
The technical solution adopted for the present invention to solve the technical problems is: comprise cylindrical shell, transmission device, riding wheel apparatus; Head and the tail at cylindrical shell are arranged with charging material mouth, feed auger and discharging opening, discharge valve, discharging cover; It is characterized in that: the inner chamber at cylindrical shell is divided into preheating zone, baking zone and dry section successively from head to tail; On the cylinder inboard wall of preheating zone, be equipped with that several piece is evenly, is interspersed and with the sweptback lifting blade I of cylindrical shell bus; On the cylinder inboard wall in baking zone proparea, be equipped with that several piece is evenly, is interspersed and with the perpendicular lifting blade II of cylindrical shell bus, lifting blade III that several piece is evenly, is interspersed and that turn forward with the cylindrical shell bus is housed on the cylinder inboard wall of baking zone back zone; On the cylinder inboard wall of dry section, be equipped with that several piece is evenly, is interspersed and with the sweptback lifting blade IV of cylindrical shell bus, and the fylfot lifting blade that multiple tracks has cross bracket is housed in the cylindrical shell of dry section; The broken arch chain that some two ends and cylinder inboard wall fix is housed on cylinder inboard wall.
Above-mentioned lifting blade I, lifting blade III and lifting blade IV are 5~10 °, 5~15 ° and 10~15 ° of angles with the bus of cylindrical shell respectively; The size of lifting blade I, lifting blade II, lifting blade III and lifting blade IV increases successively.
The length of above-mentioned preheating zone, baking zone and dry section is respectively 15%~25%, 45%~55% and 25%~35% of cylindrical shell length, and wherein, the length in baking zone proparea is 1/3~1/2 of baking zone length.
Be converted into forward at 1/5~1/8 place, top and be respectively 155~165 °, 135~150 °, 135~150 ° and 110~125 ° of angles from lifting blade I, lifting blade II, lifting blade III and lifting blade IV.
Dryer of the present invention is when work, cylindrical shell is turned round by the driving of transmission device, high moisture material and hot blast enter cylindrical shell from charging aperture, under the effect of feed auger, and because cylindrical shell center line and the angled installation of horizontal plane, revolution along with cylindrical shell, material is under the effect of self gravitation, inwall along cylindrical shell moves axially, enter the preheating zone successively, baking zone and dry section, material is at lifting blade I, lifting blade II, lifting blade III and lifting blade IV, and being taken up respectively or under the acting in conjunction of fylfot lifting blade, shed, carry out heat exchange, thereby reach the purpose of oven dry material with thermal current.Particularly: in the preheating zone, because lifting blade I size is less relatively and recede (promptly opposite with the cylindrical shell direction of rotation) with the cylindrical shell bus, angle angle that lifting blade I front end is converted into is bigger, guarantee to make the high moisture material with certain viscosity easilier in the process of cylindrical shell running from lifting blade, come off, is thrown scatter in, increase the area that material cross section in cylindrical shell forms the material curtain to greatest extent, increase improves heat utilization efficiency with the thermal current contact area; Proparea at baking zone, reduce because moisture is existing in the material, material progressively descends with cylindrical shell and the bonding ability of lifting blade II, by with the lifting blade II of the perpendicular layout of cylindrical shell bus, and its size increases to some extent, the front end angle reduces to some extent, thereby make kicking up of material more abundant, further remove the moisture in the material; Back zone at baking zone, by lifting blade III by turn forward with the cylindrical shell bus (promptly identical) with the cylindrical shell direction of rotation, and its size further increases, the angle of lifting blade II front end further reduces, make material on the cross section in this space, form maximum material curtain area, improve the heat energy utilization rate to greatest extent.At dry section, through the material after the baking zone processing, its moisture reduces greatly, material is again by kicking up with the sweptback lifting blade IV of cylindrical shell bus, and the hypsokinesis angle of lifting blade IV is bigger than lifting blade I, size is also maximum, the effect of the fylfot lifting blade at cylindrical shell middle part in addition, make the material energy that enters this district timely, be taken up fully, shed, material forms a complete material curtain on the cross section in cylindrical shell, has eliminated the possibility that the wind-tunnel phenomenon produces, the material that the quilt throwing is kicked up is in the process that falls, kicked up once more by ten thousand word lifting blades again, prolonged material time of staying aloft, it is more abundant to carry out heat exchange with thermal current.In the process of oven dry operation, contained humidity is reducing gradually in the material, the hardness of material also progressively strengthens and is agglomerated into bulk, broken arch chain collides the material piece by gravity that self had and the inertia force that produces with the cylindrical shell rotation, broken, material after the fragmentation is not only being increased with the thermal current contact area by in the process of kicking up, improve the thermal efficiency, while is owing to the material particular diameter after the fragmentation reducing, fundamentally eliminated the generation of material clogging in dryer internal motion process, make material successfully to move axially to discharge end, the material that arrives discharge end draws off by discharge valve from discharging opening, and waste gas then enters deduster through top discharging cover and purifies the back emptying.Like this, the material of Gao Shui is behind above-mentioned preheating zone, baking zone and dry section, and its moisture content can reduce to 3~5%.
Beneficial effect of the present invention is: can directly dry processing to high moisture material, equipment input and floor space have been reduced effectively, shortened the processing cycle, avoided secondary pollution, energy consumption and operating cost have been reduced, material water ratio after oven dry is handled can be reduced to 3~5%, and the oven dry treatment effect is good.
Description of drawings
Fig. 1 is a structure structure chart of the present invention;
Fig. 2 is the schematic cross-section of preheating zone of the present invention;
Fig. 3 is the schematic cross-section in baking zone of the present invention proparea;
Fig. 4 is the schematic cross-section of baking zone of the present invention back zone;
Fig. 5 is the schematic cross-section of dry section of the present invention.
Among the figure: 1 for charging aperture, 2 for feed auger, 3 for cylindrical shell, 4 for lifting blade I, 5 for lifting blade II, 6 for lifting blade III, 7 for lifting blade IV, 8 for cross frame, 9 for broken arch chain, 10 for the discharging cover, 11 for discharge valve, 12 for discharging opening, 13 for transmission mechanism, 14 for wheel holding mechanism, 15 for fylfot lifting blade, A be that preheating zone, B are that baking zone, B-1 are that baking zone proparea, B-2 are that baking zone back zone, C are dry section.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail:
The embodiment of the invention is an example with the high-moisture rotary dryer of the long 22m of cylindrical shell, diameter 3m.
The described high-moisture rotary drying machine of the embodiment of the invention comprises cylindrical shell 3, transmission device 13, riding wheel apparatus 14; The wheel band that passes through of cylindrical shell 3 places on the riding wheel apparatus 14, and cylindrical shell 3 center lines become 3 ° of angles with horizontal plane, and the rotary motive power of cylindrical shell 3 is provided by transmission device 13.Head end at cylindrical shell 3 is provided with charging material mouth 1, feed auger 2, and its tail end is provided with discharging opening 12, discharge valve 11 and discharging cover 10.(being that feed end is to discharge end) is divided into long baking zone B of 3.1m long preheating zone A, 10.5m and the long dry section C of 6.5m to the inner chamber of cylindrical shell 3 successively from head to tail; Wherein, baking zone B is divided into long baking zone proparea B1 of 5m and 5.5 long baking zone B2 again.
As shown in Figure 2, five groups, every lifting blade I4 that organizes 16, is of a size of 200 * 200mm is housed on cylindrical shell 3 inwalls of preheating zone A, every group of lifting blade I4 distributes along the circumferentially even of cylindrical shell 3 inwalls, and the lifting blade I4 of adjacent set staggers mutually; Lifting blade I4 recedes (promptly the direction of rotation with cylindrical shell 3 is opposite) with cylindrical shell 3 buses, and the diameter of lifting blade I4 and cylindrical shell 3 is the angle of α=8 °; And, 1/5 place, front portion (being 40mm) of lifting blade I4 (direction of rotation of cylindrical shell 3) forward is converted into 155 ° angle, with guarantee to make the high moisture material with certain viscosity easilier in the process of cylindrical shell running come off from lifting blade I, is thrown scatter in, increase the area that material cross section in cylindrical shell forms the material curtain to greatest extent, increase is with the thermal current contact area, improve heat utilization efficiency, remove the portion of water in the material.
As shown in Figure 3, be equipped with six groups, every group 16 on the cylinder inboard wall of baking zone proparea B1, be of a size of the lifting blade II5 of 200 * 250mm, every group of lifting blade II5 circumferentially evenly distributes along cylindrical shell 3 inwalls, and the lifting blade II5 of adjacent set staggers mutually; Lifting blade II5 and cylindrical shell 3 buses are to vertical; And 1/6 place, front portion (being 42mm) of lifting blade II5 (direction of rotation of cylindrical shell 3) forward is converted into 145 ° angle, thereby makes kicking up of material more abundant, further removes the moisture in the material;
As shown in Figure 4, adorn seven groups, every group 16 on cylindrical shell 3 inwalls of baking zone back zone B2, be of a size of the lifting blade III6 of 200 * 350mm, every group of lifting blade III6 circumferentially evenly distributes along cylindrical shell 3 inwalls, and the lifting blade III6 of adjacent set staggers mutually; Lifting blade III6 turns forward (promptly the direction of rotation with cylindrical shell 3 is identical) with cylindrical shell 3 buses, and the diameter of lifting blade III6 and cylindrical shell 3 is the angle of β=10 °; And 1/8 place, front portion (being 44mm) of lifting blade III6 (being the direction of rotation of cylindrical shell 3) forward is converted into 145 ° angle, thereby makes kicking up of material more abundant, further removes the moisture in the material;
As shown in Figure 5,240 pieces are housed on cylindrical shell 3 inwalls of dry section C, divide the lifting blade IV7 of 400 * 400mm of 15 groups, every group of lifting blade IV7 circumferentially evenly distributes along cylindrical shell 3 inwalls, and the lifting blade IV7 of adjacent set staggers mutually; Lifting blade IV7 recedes (promptly the direction of rotation with cylindrical shell 3 is opposite) with cylindrical shell 3 buses, and the diameter of lifting blade IV7 and cylindrical shell 3 is the angle of γ=12 °; And 1/8 place, front portion (being 50mm) of lifting blade IV7 (direction of rotation of cylindrical shell 3) forward is converted into 120 ° angle.Simultaneously, twice cross bracket 8 is housed, four fylfot lifting blades 15 are housed on each support 8 at the center of cylindrical shell 3.Thereby make the material that enters this district can be in time, kicked up, shed by lifting blade IV7 fully, material forms a complete material curtain on the cross section in cylindrical shell 3, eliminated the possibility that the wind-tunnel phenomenon produces, the material that the quilt throwing is kicked up is in the process that falls, kicked up once more by ten thousand word lifting blades 15 again, prolonged material time of staying aloft, it is more abundant to carry out heat exchange with thermal current.Like this, the material of Gao Shui is behind above-mentioned preheating zone A, baking zone B and dry section C, and its moisture content can reduce to 3~5%.
Go out it can also be seen that from Fig. 2, at the inwall (comprising preheating zone A, baking zone B and dry section C) of cylindrical shell 2. on the broken arch chain 9 that some two ends and cylindrical shell 3 inwalls fix is housed.Drying when material in the process of operation, contained humidity is reducing gradually in the material, the hardness of material also progressively strengthens and is agglomerated into bulk, gravity that self is had by broken arch chain 9 and the inertia force that produces with cylindrical shell 3 rotations to the material piece collide, fragmentation, material after the fragmentation is not only being increased with the thermal current contact area, is being improved the thermal efficiency in the process of kicking up, simultaneously because the generation of material clogging in cylindrical shell 3 internal motion processes has been eliminated in reducing of the material particular diameter after the fragmentation.
During work, the waiting of moisture content 〉=30% dried flow and the 800 ℃ left and right sides hot blast of material about with 80t/h and entered cylindrical shell 3 with≤20m/s flow velocity from charging aperture 1, cylindrical shell 3 is with the rotational speed of 1-5r/min, and material is behind the A of preheating zone, and moisture content is reduced to about 20%; Then, behind the drying district B, the moisture content of material can drop to 8-5%; Again behind the drying district C, the containing rate and can reduce to 3~5% of material.Material after the oven dry draws off by discharge valve 11 from discharging opening 12, and waste gas then enters deduster through top discharging cover 10 and purifies the back emptying.

Claims (4)

1, a kind of rotary dryer that is applicable to high moisture material comprises cylindrical shell, transmission device, riding wheel apparatus; Head and the tail at cylindrical shell are arranged with charging material mouth, feed auger and discharging opening, discharge valve, discharging cover; It is characterized in that: the inner chamber at cylindrical shell is divided into preheating zone, baking zone and dry section successively from head to tail; On the cylinder inboard wall of preheating zone, be equipped with that several piece is evenly, is interspersed and with the sweptback lifting blade I of cylindrical shell bus; On the cylinder inboard wall in baking zone proparea, be equipped with that several piece is evenly, is interspersed and with the perpendicular lifting blade II of cylindrical shell bus, lifting blade III that several piece is evenly, is interspersed and that turn forward with the cylindrical shell bus is housed on the cylinder inboard wall of baking zone back zone; On the cylinder inboard wall of dry section, be equipped with that several piece is evenly, is interspersed and with the sweptback lifting blade IV of cylindrical shell bus, and the fylfot lifting blade that multiple tracks has cross bracket is housed in the cylindrical shell of dry section; The broken arch chain that some two ends and cylinder inboard wall fix is housed on cylinder inboard wall.
2, a kind of rotary dryer that is applicable to high moisture material according to claim 1 is characterized in that: above-mentioned lifting blade I, lifting blade III and lifting blade IV are 5~10 °, 5~15 ° and 10~15 ° of angles with the diameter of cylindrical shell respectively; The size of lifting blade I, lifting blade II, lifting blade III and lifting blade IV increases successively.
3, a kind of rotary dryer that is applicable to high moisture material according to claim 1, it is characterized in that: the length of above-mentioned preheating zone, baking zone and dry section is respectively 15%~25%, 45%~55% and 25%~35% of cylindrical shell length, wherein, the length in baking zone proparea is 1/3~1/2 of baking zone length.
4, a kind of rotary dryer that is applicable to high moisture material according to claim 1 and 2 is characterized in that: be converted into forward at 1/5~1/8 place, top from lifting blade I, lifting blade II, lifting blade III and lifting blade IV and be respectively 155~165 °, 135~150 °, 135~150 ° and 110~125 ° of angles.
CN 200810135253 2008-08-06 2008-08-06 Rotary drying device suitable for high moisture material CN100585312C (en)

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Application Number Priority Date Filing Date Title
CN 200810135253 CN100585312C (en) 2008-08-06 2008-08-06 Rotary drying device suitable for high moisture material

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CN100585312C CN100585312C (en) 2010-01-27

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101793460A (en) * 2010-02-26 2010-08-04 杨正清 Slag dryer
CN102381848A (en) * 2011-07-25 2012-03-21 黄石市建材节能设备总厂 Efficient direct-heating gypsum calcination rotary kiln
CN102927796A (en) * 2012-10-29 2013-02-13 山东生命海生物科技有限公司 Enzyme-deactivation dryer
CN103232010A (en) * 2013-05-02 2013-08-07 甘肃蓝科石化高新装备股份有限公司 Water removing device of steel pipe hydrostatic pressure testing machine
CN104422272A (en) * 2013-08-29 2015-03-18 南通新源特种纤维有限公司 Drum dryer central structure
CN104422271A (en) * 2013-08-29 2015-03-18 南通新源特种纤维有限公司 Drum dryer front structure
CN107677115A (en) * 2017-09-28 2018-02-09 临沂市广林科技木业有限公司 A kind of Europe deals drying machine drying cylinder

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101793460A (en) * 2010-02-26 2010-08-04 杨正清 Slag dryer
CN101793460B (en) * 2010-02-26 2011-12-21 杨正清 slag dryer
CN102381848A (en) * 2011-07-25 2012-03-21 黄石市建材节能设备总厂 Efficient direct-heating gypsum calcination rotary kiln
CN102927796A (en) * 2012-10-29 2013-02-13 山东生命海生物科技有限公司 Enzyme-deactivation dryer
CN103232010A (en) * 2013-05-02 2013-08-07 甘肃蓝科石化高新装备股份有限公司 Water removing device of steel pipe hydrostatic pressure testing machine
CN103232010B (en) * 2013-05-02 2015-07-22 甘肃蓝科石化高新装备股份有限公司 Water removing device of steel pipe hydrostatic pressure testing machine
CN104422272A (en) * 2013-08-29 2015-03-18 南通新源特种纤维有限公司 Drum dryer central structure
CN104422271A (en) * 2013-08-29 2015-03-18 南通新源特种纤维有限公司 Drum dryer front structure
CN107677115A (en) * 2017-09-28 2018-02-09 临沂市广林科技木业有限公司 A kind of Europe deals drying machine drying cylinder

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Publication number Publication date
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Address after: 224051 Yancheng City environmental protection industrial park, No. five, No. 1 road, Jiangsu

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