CN103398567B - Air quantity flow equalization device for hot air penetration coal sample dehumidification equipment - Google Patents
Air quantity flow equalization device for hot air penetration coal sample dehumidification equipment Download PDFInfo
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- CN103398567B CN103398567B CN201310366534.1A CN201310366534A CN103398567B CN 103398567 B CN103398567 B CN 103398567B CN 201310366534 A CN201310366534 A CN 201310366534A CN 103398567 B CN103398567 B CN 103398567B
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Abstract
The invention discloses an air quantity flow equalization device for hot air penetration coal sample dehumidification equipment, which comprises an air draft layer mounting plate and an air draft fan which are located on an air draft layer in the coal sample dehumidification equipment, and an air inlet layer mounting plate and an air inlet which are located on an air inlet layer in the coal sample dehumidification equipment, wherein the air draft fan and the air inlet are located on the side of a box of the coal sample dehumidification equipment; from one end away from the air draft fan to the air draft fan, more than two air draft and penetration areas with the same air penetration quantity are sequentially arranged on the air draft layer mounting plate; each air draft and penetration area is provided with an air draft cover; from one end away from the air inlet to the air inlet, more than two air inlet and penetration areas with the same air penetration quantity are arranged and mounted on the air inlet layer mounting plate; and each air inlet and penetration area is provided with an air inlet cover. The air quantity flow equalization device has the advantages that the device is simple and compact in structure, low in cost and easy and simple to operate, can ensure that heating air flows in all the areas in the box are equalized, and improves a dehumidification effect.
Description
Technical field
The present invention is mainly concerned with the sample making apparatus field of coal, refers in particular to a kind of air quantity flow equalization for hot air penetration coal sample dehumidification equipment.
Background technology
For coal analysis, be actually a kind of process of sampling analysis.Coal is a kind of uneven material (granularity, mass property distribution etc.), the female parent be sampled general larger (tens tons to several ten thousand tons not etc.), the process being extracted into the representative sample that can represent whole maternal quality and characteristic to greatest extent, " sampling ", has the various ways methods such as mechanical sampling, artificial sample, half mechanical sampling at present.Every country all has pressure standard, must carry out sampling work in accordance with standard.
After adopting sample by standard, next process is sample preparation, and the criterion of sample making course is under the prerequisite not destroying sample representativeness, and sample granularity is reduced gradually, and quality also gradually reduces, until meet laboratory assay to the granularity of sample and quality (weight) requirement.Sample making course generally has the processes such as air oxygen detrition, fragmentation, division, abrasive dust.Air oxygen detrition (also can heat drying, but temperature should be less than 50 DEG C) process reduces sample exterior moisture, is beneficial to fragmentation below and division process is normally carried out.In sample making course, fragmentation is the process that sample granularity is reduced.Division process is process sample being subtracted typically to matter, the Coal Characteristics of sample before the part sample reduced must can represent and reduce, division process is also the process completing sample size minimizing in sample making course, and other process Plays regulation should not allow coal sample to lose.Because the sample loss of non-division process (as coal dust runs off, spoil is selected), the Coal Characteristics of this sample can be changed, selective (not necessarily artificial) the sample that runs off be that sample making course is definitely unallowed.
For the dry run of coal sample, current existing dehumidification mode mainly contains three kinds:
(1) air natural dries mode: which can not change the mass property of coal, but efficiency is too low, chronic (being generally 24 ~ 48 hours), and occupied ground is larger.
(2) hot blast and large oven for drying mode: which carries out the dry dehumidification of coal sample with high-power heating lamp or high-power baking oven.This kind of mode is not because analyze two stages of the mass transfer of dehumidification process, and moisture evaporation is only carried out on material surface, and the material of internal layer is difficult to evaporate moisture, and the air on material surface is once the water absorption that reaches capacity, and would not suck moisture again.The air on surface is not if taken away in time or taken a breath, and in fact moisture evaporation can stop.Therefore which can not too fast dehumidification, and efficiency equally can be very low, and the time can be very long.Because baking oven uses conventional fan, air exchanging rate is slow, and scavenging efficiency is low, and the air in case therefore can be made close to saturated water suction, and therefore the efficiency of use oven drying high-moisture material can be very low.
(3) hot air penetration coal sample dehumidifying device is adopted: it comprises casing, controller and blower fan, dividing plate, gas heater, casing is separated into two chambers by dividing plate, be positioned at the exhausting layer of top and be positioned at the air supplying layer of below, dividing plate is placed with more than one the coal sample dish being used for splendid attire coal sample, the bottom of coal sample dish offers more than one air vent, utilize gas heater to add hot-air, then by blower fan hot-air sent on coal sample dish and quick dehumidification operation is carried out to the coal sample on coal sample dish.That is, air supplying layer passes into air, after being heated, sends into exhausting layer and carries out dehumidification operation to coal sample, then discharge by heating tube.
The third mode above-mentioned, owing to have employed the dehumidification mode that hot blast penetrates, effectively increase the evaporation surface of coal sample, efficiency can improve several times to decades of times, improves the accuracy of sample preparation.But in traditional air-intake device, wind flows to principle flowing with route nearby, and machine box door exhausting layer each region air quantity can be caused uneven.
Summary of the invention
The technical problem to be solved in the present invention is just: the technical problem existed for prior art, the invention provides a kind of simple and compact for structure, with low cost, easy and simple to handle, can ensure that heated air stream in casing in all regions is balanced, improve the air quantity flow equalization for hot air penetration coal sample dehumidification equipment of dehumidification effect.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of air quantity flow equalization for hot air penetration coal sample dehumidification equipment, comprise the exhausting layer installing plate and induced draft fans, the air supplying layer installing plate being arranged in coal sample dehumidification equipment air supplying layer and air inlet that are arranged in coal sample dehumidification equipment exhausting layer, described induced draft fans and air inlet are positioned at the same side of coal sample dehumidification equipment casing; From the one end away from induced draft fans to induced draft fans, described exhausting layer installing plate sets gradually the ventilative region of exhausting that the ventilative amount of two or more is identical, the ventilative region of each exhausting is provided with an exhausting lid; From the one end away from air inlet to air inlet, described air supplying layer installing plate is arranged and installs the identical ventilative region of air intake of the ventilative amount of two or more, the ventilative region of each air intake is provided with an air inlet cover.
As a further improvement on the present invention:
From the one end away from induced draft fans to induced draft fans, the air-permeating hole that described exhausting covers or ventilative groove reduce gradually; From the one end away from air inlet to air inlet, the air-permeating hole on described air inlet cover or ventilative groove reduce gradually.
Compared with prior art, the invention has the advantages that: the air quantity flow equalization for hot air penetration coal sample dehumidification equipment of the present invention, simple and compact for structure, with low cost, easy and simple to handle, it adopts different air intake cover plates or air inlet, layer of bleeding are divided into some regions by cover plate of bleeding, the hole of size is fitted according to folding on cover plate in respective regions of the flow direction of wind, make to reach equilibrium state by the air quantity in each region, can ensure that the heated air stream in casing in all regions is balanced, improve dehumidification effect.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the present invention in embody rule example.
Fig. 2 is the principle schematic of the present invention's exhausting layer in embody rule example.
Fig. 3 is the principle schematic of the present invention's air supplying layer in embody rule example.
Marginal data:
1, exhausting layer; 2, the first exhausting lid; 3, the second exhausting lid; 4, the 3rd exhausting lid; 5, induced draft fans; 6, air inlet; 7, the first air intake cover plate; 8, the second air intake cover plate; 9, the 3rd air intake cover plate; 10, air supplying layer; 11, air supplying layer installing plate; 12, heating tube; 13, coal sample; 14, exhausting layer installing plate; 15, casing.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
As shown in Figure 1, Figure 2 and Figure 3, be an embody rule example of the present invention.From top to bottom divide successively in the drying chamber of the saturating formula dehumidifying heat pump of wind in order to: exhausting layer 1(tests chamber), air supplying layer 10(heating chamber), heating tube 12 is provided with in heating chamber, coal sample 13 is positioned in exhausting layer 1 by charging tray, and above-mentioned two chambeies are all positioned at casing 15.After experiment starts, the heat heating air intake utilizing heating tube 12 in heating chamber to produce, completes discharge from exhausting layer 1 after utilizing hot blast to carry out removal moisture drying to coal sample 13 again.
Air quantity flow equalization for hot air penetration coal sample dehumidification equipment of the present invention, comprise the exhausting layer installing plate 14 and induced draft fans 5, the air supplying layer installing plate 11 being arranged in coal sample dehumidification equipment air supplying layer 10 and air inlet 6 that are arranged in coal sample dehumidification equipment exhausting layer 1, induced draft fans 5 and air inlet 6 are positioned at the same side of coal sample dehumidification equipment casing 15; From the one end away from induced draft fans 5 to induced draft fans 5, exhausting layer installing plate 14 sets gradually the ventilative region of exhausting that the ventilative amount of two or more is identical, the ventilative region of each exhausting is provided with an exhausting lid (this example comprises the first exhausting lid 2, second exhausting lid 3, the 3rd exhausting lid 4); From the one end away from air inlet 6 to air inlet 6, air supplying layer installing plate 11 is arranged and installs the identical ventilative region of air intake of the ventilative amount of two or more, the ventilative region of each air intake is provided with an air inlet cover (this example comprises the first air intake cover plate 7, second air intake cover plate 8, the 3rd air intake cover plate 9).Wherein, the position of air inlet 6 is lower than the position of exhausting layer installing plate 14.
In the present embodiment, from the one end away from induced draft fans 5 to induced draft fans 5, the air-permeating hole that exhausting covers or ventilative groove reduce gradually, i.e. the air-permeating hole quantity of air-permeating hole quantity > the 3rd exhausting lid 4 of the air-permeating hole quantity > second exhausting lid 3 of the first exhausting lid 2.From the one end away from air inlet 6 to air inlet 6, air-permeating hole on air inlet cover or ventilative groove reduce gradually, i.e. the air-permeating hole quantity of air-permeating hole quantity < the 3rd air intake cover plate 9 of the air-permeating hole quantity < second air intake cover plate 8 of the first air intake cover plate 7.This makes it possible to guarantee identical by the air quantity in the ventilative region of each air intake, also identical by the air quantity in the ventilative region of each exhausting, and then improve the harmony of exhausting layer, air supplying layer.
Operation principle: in exhausting layer 1, induced draft fans 5 rotates to be extracted out air-flow in exhausting layer 1, and suction pressure constantly can increase along exhausting direction.Due to the air-permeating hole quantity of air-permeating hole quantity > the 3rd exhausting lid 4 of the air-permeating hole quantity > second exhausting lid 3 of the first exhausting lid 2, make to reach equal by the tolerance of the first exhausting lid 2, second exhausting lid 3, the 3rd exhausting lid 4.
When air-flow is by the first air intake cover plate 7, second air intake cover plate 8, the 3rd air intake cover plate 9, coal sample 13 is blowed to through heating tube 12 homogeneous heating, coal sample 13 in casing 15 in regional all can be dried fully, and the problem avoiding the part coal sample caused because air intake is uneven to dry occurs.
Because hot blast is discharged by induced draft fans 5, the pressure ratio atmospheric pressure now in casing 15 is low.Therefore, air can be entered in casing 15 by air inlet 6, and successively by air intake cover plate first air intake cover plate 7, second air intake cover plate 8, the 3rd air intake cover plate 9.Because the air quantity in air supplying layer 10 reduces along airintake direction, due to the air-permeating hole quantity of air-permeating hole quantity < the 3rd air intake cover plate 9 of the air-permeating hole quantity < second air intake cover plate 8 of the first air intake cover plate 7, make by the air quantity of the first air intake cover plate 7, second air intake cover plate 8, the 3rd air intake cover plate 9 equal.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (2)
1. the air quantity flow equalization for hot air penetration coal sample dehumidification equipment, it is characterized in that, comprise the exhausting layer installing plate (14) and induced draft fans (5), the air supplying layer installing plate (11) being arranged in coal sample dehumidification equipment air supplying layer (10) and air inlet (6) that are arranged in coal sample dehumidification equipment exhausting layer (1), described induced draft fans (5) and air inlet (6) are positioned at the same side of coal sample dehumidification equipment casing (15); From the one end away from induced draft fans (5) to induced draft fans (5), described exhausting layer installing plate (14) sets gradually the ventilative region of exhausting that the ventilative amount of two or more is identical, the ventilative region of each exhausting is provided with an exhausting lid; From the one end away from air inlet (6) to air inlet (6), described air supplying layer installing plate (11) is arranged and installs the identical ventilative region of air intake of the ventilative amount of two or more, the ventilative region of each air intake is provided with an air inlet cover.
2. the air quantity flow equalization for hot air penetration coal sample dehumidification equipment according to claim 1, is characterized in that, from the one end away from induced draft fans (5) to induced draft fans (5), the air-permeating hole that described exhausting covers or ventilative groove reduce gradually; From the one end away from air inlet (6) to air inlet (6), the air-permeating hole on described air inlet cover or ventilative groove reduce gradually.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310366534.1A CN103398567B (en) | 2013-08-21 | 2013-08-21 | Air quantity flow equalization device for hot air penetration coal sample dehumidification equipment |
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| CN201310366534.1A CN103398567B (en) | 2013-08-21 | 2013-08-21 | Air quantity flow equalization device for hot air penetration coal sample dehumidification equipment |
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| CN103398567A CN103398567A (en) | 2013-11-20 |
| CN103398567B true CN103398567B (en) | 2015-02-11 |
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| DE102020110912A1 (en) * | 2020-04-22 | 2021-10-28 | Heraeus Noblelight Gmbh | Method for drying a material to be irradiated and infrared irradiation device for carrying out the method |
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| CN2717232Y (en) * | 2004-06-15 | 2005-08-17 | 刘凯 | Food drying oven |
| KR20090037562A (en) * | 2007-10-12 | 2009-04-16 | 노홍구 | A cooling cycle for drying machine and cold-storage room |
| CN201285207Y (en) * | 2008-08-14 | 2009-08-05 | 常州先锋干燥设备有限公司 | Drying apparatus |
| CN101548787B (en) * | 2009-02-20 | 2011-06-08 | 楚天科技股份有限公司 | Flow equalizing apparatus used in heated air circulation sterilization dryer for heating cavity |
| CN101919436B (en) * | 2010-09-02 | 2012-11-07 | 天津大学 | Heat pump type pressure gradient fruit vegetable heat treatment library |
| CN203464646U (en) * | 2013-08-21 | 2014-03-05 | 湖南三德科技股份有限公司 | Air-volume flow equalizing device for hot-air transmission type coal-sample dehumidifying equipment |
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