CN202661309U - Hot-air passing internal circulation type coal sample dehumidification device - Google Patents
Hot-air passing internal circulation type coal sample dehumidification device Download PDFInfo
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- CN202661309U CN202661309U CN 201220301285 CN201220301285U CN202661309U CN 202661309 U CN202661309 U CN 202661309U CN 201220301285 CN201220301285 CN 201220301285 CN 201220301285 U CN201220301285 U CN 201220301285U CN 202661309 U CN202661309 U CN 202661309U
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Abstract
The utility model discloses a hot-air penetrating internal circulation type coal sample dehumidification device. The device comprises a box body, a controller, a fan, a baffle and a gas heater, wherein the fan, the baffle and the gas heater are arranged in the box body, the box body is divided into two cavities through the baffle, the fan is located in one of the cavities, more than one coal sample disks which are used for containing coal samples are arranged on the baffle, more than one ventilation holes are arranged at the bottom of the coal sample disks, and coal sample holders which is used for collecting falling samples are arranged on the lower portions of the coal sample disks. The coal sample dehumidification device has the advantages of being simple in structure, convenient to operate, high in dehumidification efficiency, low in energy consumption, capable of improving sample producing accuracy and the like.
Description
Technical field
The utility model is mainly concerned with the sample making apparatus field of coal, refers in particular to a kind of coal sample dehumidifying device that adopts hot-air through type.
Background technology
For coal analysis, be actually a kind of process of sampling analysis.Coal is a kind of inhomogeneous material (granularity, mass property distribution etc.), the female parent of being sampled is larger (tens tons to several ten thousand tons are not waited) generally, be extracted into to greatest extent the process of the representative sample that can represent whole maternal quality and characteristic " sampling ", the various ways methods such as mechanical sampling, artificial sample, half mechanical sampling are arranged at present.Every country all has the pressure standard, must abide by standard and carry out sampling work.
After adopting sample by standard, next process is sample preparation, and the criterion of sample making course is under the prerequisite of not destroying sample representativeness, and sample granularity is reduced gradually, and quality also gradually reduces, until meet laboratory assay to granularity and quality (weight) requirement of sample.Sample making course generally is the processes such as free air dry, fragmentation, division, abrasive dust.Air dry (but also heat drying, but temperature should be less than 50 ℃) process is to reduce the outside moisture of sample, and the fragmentation and the division process that are beneficial to the back are normally carried out.Fragmentation is the process that sample granularity is reduced in the sample making course.The division process is the process that sample is subtracted typically matter, the Coal Characteristics of sample before the part sample that reduces must be able to represent and reduce, the division process also is to finish the process that sample size reduces in the sample making course, and other process Plays regulations should not allow the coal sample loss.Because the sample loss of non-division process (run off such as coal dust, spoil be selected etc.), can change the Coal Characteristics of this sample, selectivity (not necessarily artificial) sample that runs off is that sample making course is definitely unallowed.
For the dry run of coal sample, present existing dehumidification mode mainly contains two kinds:
(1) air natural dries mode: this mode can not change the mass property of coal, but efficient is too low, and chronic (being generally 24～48 hours), and occupied ground is larger.
(2) hot blast and large oven for drying mode: this mode is to carry out the dry dehumidification of coal sample with high-power heating lamp or high-power baking oven.This class mode is not because analyze two stages of the mass transfer of dehumidification process, and the moisture evaporation is only carried out on the material surface, and the material of internal layer is difficult to evaporate moisture, and the air on the material surface water absorbing capacity that in a single day reaches capacity, and just can not suck moisture again.The air on surface is not as in time being taken away or being taken a breath, and in fact the moisture evaporation can stop.Therefore not too soon dehumidification of this mode, efficient equally can be very low, and the time can be very long.Because what baking oven used is conventional fan, air exchanging rate is slow, and scavenging efficiency is low, therefore can make air in the case near saturated suction, so uses the efficient of oven drying high-moisture material can be very low.
The utility model content
The technical problems to be solved in the utility model just is: for the technical matters that prior art exists, the utility model provide a kind of simple in structure, easy to operate, dehumidification efficient is high, energy consumption is low, the hot blast that can improve the sample preparation accuracy penetrates internal-circulation type coal sample dehumidifying device.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of hot blast penetrates internal-circulation type coal sample dehumidifying device, comprise casing, controller and be installed in casing interior blower fan, dividing plate, gas heater, described dividing plate is separated into two chambers with casing, described blower fan is arranged in one of them chamber, be placed with on the described dividing plate and be used for the coal sample dish of splendid attire coal sample more than one, the bottom of described coal sample dish offers more than one air vent, and the below of described coal sample dish is provided with to collect the coal sample holder of sample.
As further improvement of the utility model:
Side in the described casing forms return air channel, described blower fan is air exhauster and is arranged in top chamber, the air outlet of described blower fan is connected with an end of return air channel, and the other end of described return air channel is connected with bottom chamber, and described gas heater is installed in the return air channel.
Be equipped with to detect the wind gage of hot blast flow velocity in the described return air channel, described controller links to each other with blower fan by a frequency converter; Thereby described controller is relatively adjusted the rotating speed of blower fan by frequency converter according to the wind gage wind velocity signal that gathers and the wind speed of presetting.
Described coal sample holder comprises from top to bottom support portion, ventilation unit and the receipts sample section that links to each other successively, and described support portion is supported on the dividing plate, and described coal sample dish is positioned over the top of support portion, and described receipts sample section is positioned at the below of support portion.
Described coal sample holder and coal sample dish are one-body molded.
Compared with prior art, the utility model has the advantage of: hot blast of the present utility model penetrates internal-circulation type coal sample dehumidifying device, the dehumidification mode that adopts hot blast to penetrate, effectively increased the evaporation surface of coal sample, efficient can improve several times to decades of times, the coal sample holder that simultaneously further is provided with to collect sample below the coal sample dish has guaranteed the integrality of coal sample to have improved the accuracy of sample preparation.
Description of drawings
Fig. 1 is structural principle schematic diagram of the present utility model.
Fig. 2 is the sectional structure schematic diagram at A-A place among Fig. 1.
Fig. 3 is the plan structure schematic diagram of coal sample dish in the utility model.
Fig. 4 is the sectional structure schematic diagram at B-B place among Fig. 3.
Fig. 5 is the plan structure schematic diagram of coal sample holder in the utility model.
Fig. 6 is the sectional structure schematic diagram at C-C place among Fig. 5.
Fig. 7 is that the coal sample dish is positioned over the structural representation after the combination in the coal sample holder in the utility model.
Fig. 8 is the structural representation that in another embodiment coal sample holder and coal sample dish adopt integrated molding.
Marginal data
1, casing; 2, blower fan; 3, dividing plate; 4, controller; 5, coal sample dish; 6, gas heater; 7, coal sample holder; 8, return air channel; 9, wind gage; 10, frequency converter; 51, air vent; 71, support portion; 72, ventilation unit; 73, receive sample section; 11, coal sample; 12, sealing gasket; 13, condensation of gas dehumidifying parts.
Embodiment
Below with reference to Figure of description and specific embodiment the utility model is described in further details.
As depicted in figs. 1 and 2, hot blast of the present utility model penetrates internal-circulation type coal sample dehumidifying device, comprise casing 1, controller 4 and be installed in blower fan 2, dividing plate 3, gas heater 6 in the airtight casing 1, dividing plate 3 is separated into two chambers with casing 1, is respectively bottom chamber and top chamber.Blower fan 2 is arranged in one of them chamber, is arranged in top chamber in the present embodiment, and this blower fan 2 adopts air exhauster.Be placed with on the dividing plate 3 and be used for the coal sample dish 5 of splendid attire coal sample 11 more than one, coal sample 11 paves uniformly in coal sample dish 5.Referring to Fig. 3～Fig. 7, the bottom of coal sample dish 5 offers more than one air vent 51, and hot-air flow passes from air vent 51, sees through uniformly coal sample 11, and coal sample 11 is carried out the dehumidification operation.The below of coal sample dish 5 is provided with to collect the coal sample holder 7 of sample.Gas heater 6 is used for recirculating air is heated, and guarantees the coal sample 11 in the coal sample dish 5 is heated dehumidification.Dehumidification (diminishing) process is actually a mass transport process, namely will progressively take away the moisture in the material by the air that flows, and the moisture of material just can gradually reduce.The diminishing process is divided into two stages, and first stage moisture will change steam state into by liquid state from the material surface; Second stage is to want molten in the air on material surface by the steam that the material surface is evaporated to steam state, is taken away by the air that flows.This two stages all with the temperature correlation of material periphery, the water yield that the evaporation of material surface moisture and ambient air institute can molten suctions follows temperature to have functional relation, temperature is higher, velocity of evaporation is faster, the water yield of the solvable suction of a certain amount of air is also larger.But the temperature height can affect the physics and chemistry characteristic of coal sample to a certain extent, and therefore, international standard regulation temperature at this moment can not be higher than 40 ℃, and national Specification is 50 ℃.Therefore, the dehumidification method that the utility model adopts hot blast to penetrate is the evaporation surface that increases material for effective, and efficient can improve several times to decades of times.Simultaneously, in the dehumidification process, can not take away part coal sample 11 in order to guarantee air-flow, so the utility model further is provided with to collect the coal sample holder 7 of sample below coal sample dish 5, to guarantee the integrality of coal sample 11, improves the accuracy of sample preparation.
In the present embodiment, side in casing 1 forms return air channel 8, and blower fan 2 is for air exhauster and be arranged in top chamber, and the air outlet of blower fan 2 is connected with an end of return air channel 8, the other end of return air channel 8 is connected with bottom chamber, and gas heater 6 is installed in the return air channel 8.By the work of blower fan 2, make the thermal current of casing 1 bottom up move penetrating the coal sample 11 in the coal sample dish 5, finish dehumidification.Simultaneously, the air-flow that is positioned at casing 1 top cavity enters again return air channel 8, is admitted to again in the cavity of casing 1 bottom after re-using behind the gas heater 6, heating.Be appreciated that in the return air channel 8, in order to improve the flow velocity of air-flow, can also increase again more than one pressure fan.The present embodiment also is provided with one and is used for condensation of gas dehumidifying parts 13 that gas is dehumidified in return air channel 8.
In the present embodiment, be equipped with to detect the wind gage 9 of hot blast flow velocity in the return air channel 8, controller 4 links to each other with blower fan 2 by a frequency converter 10.At the dry initial stage of coal sample 11, because coal sample 11 moisture are high, gas penetration potential is not strong, dry gas stream speed is lower than pre-set velocity, thereby controller 4 gathers the wind velocity signal of wind gage 9 and relatively adjusts blower fan 2 rotating speeds by frequency converter 10 with default wind speed, so that dry inlet velocity is consistent with default wind speed, to accelerate rate of drying.Along with the moisture of sample in the dryer constantly separates, the gas penetration potential of sample strengthens, and the dry gas stream wind speed increases gradually.Controller 4 will constantly be adjusted fan speed according to the signal intensity of wind gage 9, and wind speed is reduced gradually, thus avoided coal sample 11 too dry, reach energy-conservation effect.
Overall, the purpose of frequency conversion is to produce air quantity and the wind speed that matches according to the element number of real work, thereby guarantees the optimum efficiency of dehumidification.Be that the real work unit is few, frequency conversion reduces air quantity, increases such as actual working cell, and frequency conversion increases air quantity.Implementation procedure is to install wind speed detection device in blast main additional, if detect wind speed unexpected minimizing is arranged, and showing has new working cell to add work, and should improve air quantity this moment.As detect wind speed and increase suddenly, then be because the working cell state of deactivating is arranged, should reduce air quantity.
From the course of work of a unit, the diminishing process of material be divided into high humidity, in wet and three processes of low humidity, at the diminishing initial stage, humidity of materials is large, windage is correspondingly larger, will keep through material enough air quantity and wind speed this moment, the blast that needs should be maximum.Along with the reduction of material moisture, windage can progressively reduce, and should adjust air quantity and wind speed this moment in good time.In the phase III, there are a lot of high humidity samples to have the caking situation and occur, this moment, windage can increase on the contrary, if also need continue dehumidification, should improve blast, to keep suitable wind speed.
In the present embodiment, coal sample holder 7 comprises support portion 71, the ventilation unit 72 that links to each other successively from top to bottom and receives sample section 73, support portion 71 is supported on the dividing plate 3, be provided with sealing gasket 12 between support portion 71 and the dividing plate 3, coal sample dish 5 is positioned over the top of support portion 71, and guarantee that coal sample dish 5 and the contact site of support portion 71 seal fully, receive the below that sample section 73 is positioned at support portion 71.That is, the side of coal sample dish 5 guarantees sealing.If the void ratio of the side of coal sample dish 5 (i.e. periphery) is larger, just may make the periphery of most of air flow direction dish and streams mistake that can be from dish.In order to make flow through to greatest extent coal sample 11 in the coal sample dish 5 of thermal current, it is better that the side of coal sample dish 5 in fact more seals.Can abstractively the periphery of coal sample dish 5 be likened into two passes with middle part air vent 51, which bar road hot blast will be walked from, see that the resistance in which bar road is little (also being windage).
As shown in Figure 8, in another embodiment, can also be according to actual needs, coal sample holder 7 and coal sample dish 5 is one-body molded, and coal sample holder 7 is located immediately at the below of coal sample dish 5.
Below only be preferred implementation of the present utility model, protection domain of the present utility model also not only is confined to above-described embodiment, and all technical schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should be pointed out that for those skilled in the art, the some improvements and modifications not breaking away under the utility model principle prerequisite should be considered as protection domain of the present utility model.
Claims (5)
1. a hot blast penetrates internal-circulation type coal sample dehumidifying device, it is characterized in that: comprise casing (1), controller (4) and be installed in blower fan (2) in the casing (1), dividing plate (3), gas heater (6), described dividing plate (3) is separated into two chambers with casing (1), described blower fan (2) is arranged in one of them chamber, be placed with on the described dividing plate (3) and be used for the coal sample dish (5) of splendid attire coal sample more than one, the bottom of described coal sample dish (5) offers more than one air vent (51), and the below of described coal sample dish (5) is provided with to collect the coal sample holder (7) of sample.
2. hot blast according to claim 1 penetrates internal-circulation type coal sample dehumidifying device, it is characterized in that: the side in the described casing (1) forms return air channel (8), described blower fan (2) is for air exhauster and be arranged in top chamber, the air outlet of described blower fan (2) is connected with an end of return air channel (8), the other end of described return air channel (8) is connected with bottom chamber, and described gas heater (6) is installed in the return air channel (8).
3. hot blast according to claim 2 penetrates internal-circulation type coal sample dehumidifying device, it is characterized in that: the wind gage (9) of hot blast flow velocity is installed to detect in the described return air channel (8), and described controller (4) links to each other with blower fan (2) by a frequency converter (10); Described controller (4) is relatively also adjusted the rotating speed of blower fan (2) by frequency converter (10) according to wind gage (9) wind velocity signal that gathers and the wind speed of presetting.
According to claim 1 and 2 or 3 described hot blasts penetrate internal-circulation type coal sample dehumidifying device, it is characterized in that: described coal sample holder (7) comprises support portion (71), the ventilation unit (72) that links to each other successively from top to bottom and receives sample section (73), described support portion (71) is supported on the dividing plate (3), described coal sample dish (5) is positioned over the top of support portion (71), and described receipts sample section (73) is positioned at the below of support portion (71).
5. hot blast according to claim 4 penetrates internal-circulation type coal sample dehumidifying device, it is characterized in that: described coal sample holder (7) is one-body molded with coal sample dish (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220301285 CN202661309U (en) | 2012-06-26 | 2012-06-26 | Hot-air passing internal circulation type coal sample dehumidification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220301285 CN202661309U (en) | 2012-06-26 | 2012-06-26 | Hot-air passing internal circulation type coal sample dehumidification device |
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| Publication Number | Publication Date |
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| CN202661309U true CN202661309U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220301285 Expired - Lifetime CN202661309U (en) | 2012-06-26 | 2012-06-26 | Hot-air passing internal circulation type coal sample dehumidification device |
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| CN (1) | CN202661309U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937539A (en) * | 2012-06-26 | 2013-02-20 | 湖南三德科技发展有限公司 | Hot air penetrating internal circulation coal sample dehumidifying device |
| CN103398789A (en) * | 2013-08-21 | 2013-11-20 | 湖南三德科技股份有限公司 | Telescopic temperature measuring device for coal sample dehumidification equipment |
-
2012
- 2012-06-26 CN CN 201220301285 patent/CN202661309U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937539A (en) * | 2012-06-26 | 2013-02-20 | 湖南三德科技发展有限公司 | Hot air penetrating internal circulation coal sample dehumidifying device |
| WO2014000522A1 (en) * | 2012-06-26 | 2014-01-03 | 湖南三德科技股份有限公司 | Hot air penetrating internal circulation coal sample dehumidifying device |
| CN102937539B (en) * | 2012-06-26 | 2015-10-28 | 湖南三德科技股份有限公司 | Hot blast penetrates internal-circulation type coal sample dehumidifying device |
| CN103398789A (en) * | 2013-08-21 | 2013-11-20 | 湖南三德科技股份有限公司 | Telescopic temperature measuring device for coal sample dehumidification equipment |
| CN103398789B (en) * | 2013-08-21 | 2015-10-28 | 湖南三德科技股份有限公司 | For the scalable temperature measuring equipment of coal sample dehumidification equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUNAN SUNDY SCIENCE AND TECHNOLOGY DEVELOPMENT CO. Free format text: FORMER NAME: SANDE SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD., HUNAN |
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| CP01 | Change in the name or title of a patent holder |
Address after: 410205 Changsha high tech Zone, Tongzi, west slope road, No. 558, No. Patentee after: HUNAN SUNDY SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 410205 Changsha high tech Zone, Tongzi, west slope road, No. 558, No. Patentee before: Hunan Sundy Science and Technology Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |