CN101755903B - Energy-efficient grain dryer - Google Patents

Energy-efficient grain dryer Download PDF

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Publication number
CN101755903B
CN101755903B CN2010101073730A CN201010107373A CN101755903B CN 101755903 B CN101755903 B CN 101755903B CN 2010101073730 A CN2010101073730 A CN 2010101073730A CN 201010107373 A CN201010107373 A CN 201010107373A CN 101755903 B CN101755903 B CN 101755903B
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CN
China
Prior art keywords
air
drying tower
energy
hot
horn shape
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Application number
CN2010101073730A
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Chinese (zh)
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CN101755903A (en
Inventor
杨玉堂
杨振宇
何亚元
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开原市凯尔有限公司
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Priority to CN2010101073730A priority Critical patent/CN101755903B/en
Publication of CN101755903A publication Critical patent/CN101755903A/en
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Publication of CN101755903B publication Critical patent/CN101755903B/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85Food storage or conservation, e.g. cooling or drying

Abstract

An energy-efficient grain dryer comprises a drying tower, a feeding device, a hot air furnace, an air cooler, horn-like air tanks and a grain discharge device. The grain dryer is characterized in that at least three layers of horn-like air tanks are uniformly distributed in each section of the drying tower; the horn-like air tank on the lowermost layer runs through the side wall of the drying tower and is perpendicular to the horn-like air tanks at the upper side thereof; the air inlet ends of the horn-like air tanks on the two adjacent layers at the upper side are respectively arranged at two sides of the drying tower and are connected with air conduits; hot air inlets of the air conduits are connected with the hot air furnace and cold air inlets thereof are connected with the air cooler; a flue gas dedusting and purifying device is arranged at the lower part of a heat exchanger in the hot air furnace and is communicated with a flue gas recovery chamber; an adiabatic wall is arranged in a furnace body which is arranged at the upper side of a furnace grate and is close to a furnace door, and is connected with a heat-conducting plate; a reflux flue is arranged between the bottom of the flue gas furnace grate and the flue gas recovery chamber; and the furnace grate is communicated with a blast inlet in the furnace body. The grain dryer has the advantages of high efficiency of drying grains, fine quality, small volume, environmental protection, energy saving, etc.

Description

The energy-saving grain drying machine
Technical field
The invention belongs to the grain drying equipment technical field, specifically a kind of energy-saving grain drying machine.
Background technology
Drying tower in the existing grain drying equipment mainly contains two types: 1, horn shape air bath type drying tower, grain are piled up the crack between adjacent air drain, and heat (cold) air-flow flows into from air drain; Air-flow gets into the grain layer from the air drain under shed; Completion is anhydrated to the heating (cooling) of grain, and the air drain layering here is distributed in the drying tower, when tower body is made up of inside and outside double-layer structure; Air inlet is arranged in the inside and outside interlayer; Barge board is established at relative grain layer position in the middle of interlayer, and the purpose of this barge board is the gas channeling upper strata air drain layer that lower floor's air drain laminar flow is gone out, and the gas flow between the air drain layer is type snakelike transmission from the bottom to top; This structure causes the temperature of hot gas to lower gradually from the bottom to top, and drying effect is inevitable uneven; When tower body was single layer structure, the drying tower center was provided with warm-air pipe, and this warm-air pipe is ventilated to every layer of air drain, and hot gas is by mind-set tower both sides diffusion in the tower, though this structure makes the interior temperature of heated grain of tower average, blast is bigger.2, screen cloth pillar drying tower; Tower body is that inside and outside two layer screen net forms; Grain is piled up the whereabouts in interlayer, heat (cold) air-flow passes outer screen cloth by screen cloth in the percolation in the tower through the grain layer and discharges, and accomplishes the heating (cooling) of grain is anhydrated; This structure is general huger, and consumptive material is more, cost of manufacture is high.
And the flue gas that hot-blast stove produces in the existing grain drying equipment does not generally make full use of, and causes the waste of heat energy and to the pollution of environment, even flue gas is recovered utilization, also only be transported in the drying tower required to replenish drying grain.For China the Northeast cold winter when using grain drying equipment; Outer temperature is low, air humidity is generally 30~40%; Because the simple hot blast temperature that is lifted into tower of traditional structure grain drying equipment; The heated-air drying grain time that humidity is high, long coal consumption was big, and cold coal internal-external temperature difference when getting into fire grate is big simultaneously, keeps furnace temperature and consumes energy higher naturally.
Summary of the invention
The energy-saving grain drying machine that the purpose of this invention is to provide a kind of hot-blast stove of fully recycling with new-type horn shape air bath type drying tower and flue gas.
The objective of the invention is to realize like this: it includes drying tower, drying tower feed arrangement, hot-blast stove, air-cooler, the drying tower bottom delivery device of being made up of grain storage section, oven dry section, delay section, cooling section; Wherein be evenly equipped with the horn shape air drain that layering is provided with in the drying tower; It is characterized in that: be uniformly distributed with at least in each workshop section of drying tower and be provided with three layers of horn shape air drain; Wherein undermost horn shape air drain runs through the drying tower sidewall in each workshop section; Undermost horn shape air drain is vertical with the horn shape air drain of its upside in each workshop section; The inlet end of undermost horn shape air drain upside adjacent two layers horn shape air drain is connected in the drying tower both sides and with ventilation shaft respectively in each workshop section, and the hot-wind inlet of this ventilation shaft is connected with hot-blast stove, cold air inlet links to each other with air-cooler; Described hot-blast stove includes body of heater, fire grate, coal inlet, coal feeding bucket, ashpit, heat exchanger, air-heater; The heat exchanger bottom is provided with flue-gas dust removal and purification device; Flue-gas dust removal and purification device reclaims the chamber with flue gas and is communicated with, and in the body of heater of fire grate upside near fire door, is provided with insulated wall, and insulated wall also is connected with heat-conducting plate; Reclaim the backflow flue that is provided with band air quantity adjusting rod between the chamber in flue gas fire grate bottom and flue gas, the fire grate blast entrance interior with being arranged on body of heater is communicated with.
Described feed arrangement comprises conveyer, elementary elevator, receiving sieve and two-stage hoisting machine; Conveyer blanking end is connected with elementary elevator charging aperture; Elementary elevator feed opening is connected with the receiving sieve charging aperture, and the feed opening of receiving sieve is connected with the two-stage hoisting machine inlet capable.
Described delivery device is four impeller mechanism delivery devices.
Said heat-conducting plate is metallic plate or heat conduction brick.
On heat-conducting plate and heat-conducting plate upper furnace, be evenly equipped with guide plate.
In hot-blast stove, be provided with temperature sensor near heat exchanger.
Also be provided with the ash discharge guide plate at the fire grate downside.
Also be provided with air preheating chamber between blast entrance and the fire grate.
Each workshop section's orlop horn shape air drain of the present invention is the humidity discharging layer, because this horn shape air drain runs through the drying tower sidewall, so only depend on inner blast and natural wind as power during humidity discharging, need not the actuating unit driving; The inlet end of undermost horn shape air drain upside adjacent two layers horn shape air drain is connected in the drying tower both sides and with ventilation shaft respectively in each workshop section; So just make in each workshop section the above adjacent two layers horn shape of undermost horn shape air drain air drain airintake direction in opposite directions; And be a side direction opposite side by drying tower; To the diffusion of grain layer, its drying effect is good, blast is low from horn shape air drain open lower side for the gas that gets into; The heated dry air that gets into drying tower makes full use of the energy by forming through the hot-air of heat exchanger heat exchange and the air that between heat-conducting plate and body of heater, heats, and the humidity of this heated dry air can reach 5~10%; Because the recycling of flue gas significantly reduces the exhaust smoke level of complete equipment; Be approximately 30%~50% of normal exhaust smoke level; Help environmental protection, the waste heat of flue gas has been saved coal-fired use amount simultaneously, compares the saving fire coal with traditional drying mode and reaches 50% ± 5%.Reduced production cost; Flue gas also carries out preheating to the cold coal that just gets into fire grate in the recycling process, can make coal-fired fully burning in fire grate, improves the effect of hot-blast stove.The volume of drying tower of the present invention is merely 60% of traditional drying tower, has significantly reduced manufacturing cost.The present invention also possesses advantages such as floor space is little, simple to operate, drying grain efficient high-quality is good.
Description of drawings
Fig. 1 is a broken section structural representation sketch of the present invention.
Fig. 2 is the left view of Fig. 1;
Fig. 3 be among Fig. 1 hot-blast stove analyse and observe the structure for amplifying sketch map.
To combine accompanying drawing the present invention to be done further explain below, but following instance only is the present invention's example wherein through instance, the rights protection scope of not representing the present invention and being limited, rights protection scope of the present invention is as the criterion with claims.
The specific embodiment
Shown in Fig. 1-3, primary structure of the present invention includes the drying tower of being made up of grain storage section, oven dry section, delay section, cooling section 1, drying tower feed arrangement; This feed arrangement comprises conveyer 12, elementary elevator 13, receiving sieve 14 and two-stage hoisting machine 15; Conveyer 12 blanking ends are connected with elementary elevator 13 charging apertures, and elementary elevator 13 feed openings are connected with receiving sieve 14 charging apertures, and the feed opening of receiving sieve 14 is connected with two-stage hoisting machine 15 charging apertures; Two-stage hoisting machine 15 feed openings are connected with drying tower 1 top fed mouth; Hot-blast stove 6, air-cooler 3, four impeller mechanism delivery devices of drying tower bottom; Be evenly equipped with the horn shape air drain that layering is provided with in the drying tower; Be uniformly distributed with in each workshop section of drying tower and be provided with three layers of horn shape air drain, wherein undermost horn shape air drain 2 runs through the drying tower sidewall in each workshop section, and undermost horn shape air drain 2 is vertical with horn shape air drain 2a, the 2b of its upside in each workshop section; The inlet end of undermost horn shape air drain upside adjacent two layers horn shape air drain 2a, 2b is connected in the drying tower both sides and with ventilation shaft 9 respectively in each workshop section, and the hot-wind inlet 10 of this ventilation shaft is connected with hot-blast stove 6, cold air inlet 11 links to each other with air-cooler 3; Hot-blast stove includes body of heater 17, fire grate 21, coal inlet 24, coal feeding bucket 23, ashpit 25, heat exchanger 16, air-heater 7; Heat exchanger 16 bottoms are provided with flue-gas dust removal and purification device 30; Flue-gas dust removal and purification device reclaims chamber 29 with flue gas and is communicated with; Reclaim the backflow flue that is provided with band air quantity adjusting rod 27 between the chamber 29, the adjusting flue gas air quantity that this air quantity adjusting rod can be in good time according to actual needs in flue gas fire grate bottom and flue gas.The fire grate downside also is connected with air preheating chamber 33, and air preheating chamber 33 blast entrance 32 interior with being arranged on body of heater is communicated with.In order to promote air themperature to 500 ℃, reduce air humidity, in the body of heater of fire grate upside, to be provided with insulated wall 22 near fire door; Insulated wall also is connected with heat-conducting plate 20; The air that gets into from coal inlet 24 is heated by furnace temperature between heat-conducting plate and body of heater; In order to make this part air heat abundant, on heat-conducting plate and heat-conducting plate upper furnace, be evenly equipped with guide plate 19, the flowing velocity of air is slowed down.For the ease of the monitoring furnace temperature, in hot-blast stove, be provided with temperature sensor 18 near heat exchanger.Also be provided with ash discharge guide plate 26 at the fire grate downside, this ash discharge guide plate is higher than the near-end of ashpit with respect to the far-end of ashpit, and is very convenient during the cleaning coal ash.
During work, grain gets into drying tower 1 through conveyer 12, elementary elevator 13, receiving sieve 14 and two-stage hoisting machine 15, and grain is piled up in the crack between adjacent horn shape air drain; Fire grate transmission fire coal drops on the fire grate from coal feeding bucket 23; Get in the hot-blast furnace body through coal inlet 24, air gets into from blast entrance 32, at first passes through air preheating chamber 33 preheatings; Required oxygen when portion of air is sent into fire grate downside confession fired coal combustion; The coal-fired flue gas that produces gets in the heat exchanger tube of heat exchanger 16, and the flue gas in the heat exchanger leads to flue-gas dust removal and purification device 30 downwards, and the flue gas in dedusting and purifying device after the udst separation is introduced flue gas by air-introduced machine 28 and reclaimed chamber 29; Another part air is in the heat exchanger tube outside heat exchange of heat exchanger; By the air of furnace temperature heating with export 5 places at the air of heat exchanger 16 heat exchange at hot-blast stove and mixes through pipeline and send into drying tower hot-wind inlet 10, the ventilation shaft of hot-wind inlet upside is interior to be hot blast between heat-conducting plate 20 and body of heater 17.The flue gas that flue gas reclaims in the chamber 29 gets into fire grate downside (shown in Fig. 3 arrow) through the backflow flue of being with air quantity adjusting rod 27; For the cold coal that gets into fire grate carries out preheating, thereby make coal-fired fully burning, because the inlet end of two-layer horn shape air drain is connected in the drying tower both sides and with ventilation shaft respectively in each workshop section; So this two-layer airintake direction in opposite directions; And be the side direction opposite side by drying tower, to the diffusion of grain layer, its drying effect is good, blast is low from horn shape air drain open lower side for the gas of entering; Orlop horn shape air drain runs through the drying tower sidewall, so only depend on inner blast and natural wind as power during humidity discharging.Through the cold air inlet 11 places cooling of being lowered the temperature in the drying tower bottom of dried grain, drying tower is discharged by four impeller mechanism delivery devices in the cooling back, accomplishes whole drying process process.In the accompanying drawing 4 is the hot-blast stove chimney in addition, and 8 is the drying tower base, and 31 is balanced valve; Discharge capacity through balanced valve control flue gas; The AIR Proportional that is inner flue gas of the stove amount and burning oxygen consumption is a standard not influence coal-fired normal combustion, the least possible discharging flue gas, recycle more.Realized the object of the invention in sum.

Claims (8)

1. energy-saving grain drying machine; It includes drying tower, drying tower feed arrangement, hot-blast stove, air-cooler, the drying tower bottom delivery device of being made up of grain storage section, oven dry section, delay section, cooling section; Wherein be evenly equipped with the horn shape air drain that layering is provided with in the drying tower; It is characterized in that: be uniformly distributed with at least in each workshop section of drying tower and be provided with three layers of horn shape air drain; Wherein undermost horn shape air drain runs through the drying tower sidewall in each workshop section; Undermost horn shape air drain is vertical with the horn shape air drain of its upside in each workshop section, and the inlet end of undermost horn shape air drain upside adjacent two layers horn shape air drain is connected in the drying tower both sides and with ventilation shaft respectively in each workshop section, and the hot-wind inlet of this ventilation shaft is connected with hot-blast stove, cold air inlet links to each other with air-cooler; Described hot-blast stove includes body of heater, fire grate, coal inlet, coal feeding bucket, ashpit, heat exchanger, air-heater; The heat exchanger bottom is provided with flue-gas dust removal and purification device; Flue-gas dust removal and purification device reclaims the chamber with flue gas and is communicated with, and in the body of heater of fire grate upside near fire door, is provided with insulated wall, and insulated wall also is connected with heat-conducting plate; Reclaim the backflow flue that is provided with band air quantity adjusting rod between the chamber in flue gas fire grate bottom and flue gas, the fire grate blast entrance interior with being arranged on body of heater is communicated with.
2. energy-saving grain drying machine according to claim 1; It is characterized in that: described feed arrangement comprises elementary elevator, receiving sieve and two-stage hoisting machine; Conveyer blanking end is connected with elementary elevator charging aperture; Elementary elevator feed opening is connected with the receiving sieve charging aperture, and the feed opening of receiving sieve is connected with the two-stage hoisting machine inlet capable.
3. energy-saving grain drying machine according to claim 1 is characterized in that: described delivery device is four impeller mechanism delivery devices.
4. energy-saving grain drying machine according to claim 1 is characterized in that: said heat-conducting plate is metallic plate or heat conduction brick.
5. energy-saving grain drying machine according to claim 1 is characterized in that: on heat-conducting plate and heat-conducting plate upper furnace, be evenly equipped with guide plate.
6. energy-saving grain drying machine according to claim 1 is characterized in that: in the hot-blast stove near heat exchanger, be provided with temperature sensor.
7. energy-saving grain drying machine according to claim 1 is characterized in that: also be provided with the ash discharge guide plate at the fire grate downside.
8. energy-saving grain drying machine according to claim 1 is characterized in that: also be provided with air preheating chamber between described blast entrance and the fire grate.
CN2010101073730A 2010-02-09 2010-02-09 Energy-efficient grain dryer CN101755903B (en)

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CN2010101073730A CN101755903B (en) 2010-02-09 2010-02-09 Energy-efficient grain dryer

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Application Number Priority Date Filing Date Title
CN2010101073730A CN101755903B (en) 2010-02-09 2010-02-09 Energy-efficient grain dryer

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CN101755903A CN101755903A (en) 2010-06-30
CN101755903B true CN101755903B (en) 2012-07-04

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104126660B (en) * 2014-07-24 2016-04-06 天津麦世科尔科技咨询有限公司 A kind of round-the-clock fluidized bed process crop dryer
CN104990388B (en) * 2015-08-10 2018-04-27 盐城迈克瑞机械有限公司 A kind of high-efficiency rice drying machine
CN105285093A (en) * 2015-11-05 2016-02-03 临沂金铭机械有限公司 Grain tempering and drying device
CN106035641A (en) * 2016-06-01 2016-10-26 望江县乡缘农业有限责任公司 Automatic drying system for grains
CN106234578A (en) * 2016-07-28 2016-12-21 合肥三伍机械有限公司 One is applicable to Semen Brassicae campestris and other short grained group of grain wheel
CN107166949A (en) * 2017-07-10 2017-09-15 合肥佳粮机械科技有限公司 A kind of foodstuff drying device monitoring and warning system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201630195U (en) * 2010-02-09 2010-11-17 开原市凯尔有限公司 Energy-saving high-efficiency grain drier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201630195U (en) * 2010-02-09 2010-11-17 开原市凯尔有限公司 Energy-saving high-efficiency grain drier

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