CN102944452A - Hot air-penetration external circulating-type coal sample dehumidification device having automatic sample feeding/taking function - Google Patents
Hot air-penetration external circulating-type coal sample dehumidification device having automatic sample feeding/taking function Download PDFInfo
- Publication number
- CN102944452A CN102944452A CN2012102125040A CN201210212504A CN102944452A CN 102944452 A CN102944452 A CN 102944452A CN 2012102125040 A CN2012102125040 A CN 2012102125040A CN 201210212504 A CN201210212504 A CN 201210212504A CN 102944452 A CN102944452 A CN 102944452A
- Authority
- CN
- China
- Prior art keywords
- coal sample
- sample
- sampling
- coal
- machine structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a hot air-penetration external circulating-type coal sample dehumidification device having an automatic sample feeding/taking function. The hot air-penetration external circulating-type coal sample dehumidification device having an automatic sample feeding/taking function comprises a case, a controller, a sample feeding/taking mechanism, a fan, a division plate, a gas heater, and one or more sample carrying mechanism, wherein the fan, the division plate, the gas heater and the one or more sample loading mechanisms are arranged in the case which is inclosed. The case is divided into an upper chamber and a lower chamber by the division plate. The top or a side of the upper chamber is provided with an air outlet. The bottom or a side of the lower chamber is provided with an air inlet. The fan is located in the upper chamber and is close to the air outlet. The gas heater is located in the lower chamber. Each one of the one or more sample loading mechanisms comprises a coal sample tray for receiving coal samples and a coal sample support for collecting coal samples; the bottom of the coal sample tray is provided with at least one ventilation hole; the top of the coal sample tray is provided with a sealing part which is in a contact fit relationship with the division plate; and the coal sample support is located below the coal sample tray. The sample feeding/taking mechanism is connected to the one or more sample loading mechanisms and drives the one or more sample loading mechanisms to go up and down. The hot air-penetration external circulating-type coal sample dehumidification device having an automatic sample feeding/taking function has the advantages of simple structure, convenient operation, high dehumidification efficiency, low energy consumption, high sample preparation accuracy and low labor intensity.
Description
Technical field
The present invention 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.
Summary of the invention
The technical problem to be solved in the present invention just is: for the technical matters that prior art exists, the invention provides a kind of simple in structure, easy to operate, dehumidification efficient high, energy consumption is low, can improve the sample preparation accuracy, the hot blast that can automatically send sampling that can reduce labour intensity penetrates outer circulation type coal sample dehumidifying device.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of hot blast of sampling that can automatically send penetrates outer circulation type coal sample dehumidifying device, comprise casing, controller, send sampling mechanism and be installed in airtight casing interior blower fan, dividing plate, gas heater, more than one Sheng model machine structure, described dividing plate is separated into epicoele and cavity of resorption with casing, described upper top of chamber or side opening are provided with air outlet, bottom or the side opening of described cavity of resorption are provided with air inlet, described blower fan is arranged in epicoele near the air outlet place, and described gas heater is arranged in cavity of resorption; Described Sheng model machine structure comprises the coal sample dish of splendid attire coal sample and the coal sample holder that is used for collecting sample, the bottom of described coal sample dish offers more than one air vent, the top of described coal sample dish is provided with to contact the sealing that cooperates with dividing plate, and described coal sample restitope is in the below of coal sample dish; Describedly send sampling mechanism and contain that the model machine structure links to each other and move up and down with Sheng model machine structure.
As a further improvement on the present invention:
Be equipped with to detect the wind gage of hot blast flow velocity in described epicoele and/or the cavity of resorption, 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 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.
The described sampling mechanism that send is an elevating mechanism, the described elevating mechanism that comprises comprises the swingle more than, one end of described swingle links to each other with Sheng model machine structure and finishes lifting with containing the rotation of model machine structure, and the other end of described swingle is articulated on casing or the casing peripheral operation platform.
The described sampling mechanism that send is an elevating mechanism, and the described elevating mechanism that comprises comprises the elevating screw assembly, and described Sheng model machine structure is connected on the elevating screw assembly and can finishes elevating movement with the motion of elevating screw assembly.
Compared with prior art, the invention has the advantages that: the hot blast of sampling that can automatically send of the present invention penetrates outer 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.The present invention has further adopted elevating mechanism, has reduced the labour intensity that send the sampling operation.
Description of drawings
Fig. 1 is structural principle synoptic diagram of the present invention.
Fig. 2 is the sectional structure synoptic diagram at A-A place among Fig. 1.
Fig. 3 is the plan structure synoptic diagram of coal sample dish among the present invention.
Fig. 4 is the sectional structure synoptic diagram at B-B place among Fig. 3.
Fig. 5 is the plan structure synoptic diagram of coal sample holder among the present invention.
Fig. 6 is the sectional structure synoptic 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 among the present invention.
Fig. 8 is the structural representation that in another embodiment coal sample holder and coal sample dish adopt integrated molding.
Fig. 9 to be the present invention send in concrete application example sampling mechanism is in the swing state structural representation.
The structural representation of Figure 10 when to be the present invention send sampling mechanism to be in dress sample state in concrete application example.
Marginal data
1, casing; 101, epicoele; 102, cavity of resorption; 103, air outlet; 104, air inlet; 2, blower fan; 3, dividing plate; 4, controller; 5, coal sample dish; 6, gas heater; 7, coal sample holder; 9, wind gage; 10, frequency converter; 51, air vent; 52, sealing; 71, support portion; 72, ventilation unit; 73, receive sample section; 11, coal sample; 12, sealing gasket; 13, swingle; 15, send sampling mechanism.
Embodiment
Below with reference to Figure of description and specific embodiment the present invention is described in further details.
As depicted in figs. 1 and 2, the hot blast of sampling that can automatically send of the present invention penetrates outer circulation type coal sample dehumidifying device, comprise casing 1, controller 4, send sampling mechanism 15 and be installed in blower fan 2, dividing plate 3, gas heater 6 in the casing 1, contain the model machine structure, dividing plate 3 is separated into epicoele 101 and cavity of resorption 102 with casing 1, epicoele 101 tops or side opening are provided with air outlet 103, the top of present embodiment casing 1 is open by design, and whole top is air outlet 103; The bottom of cavity of resorption 102 or side opening are provided with air inlet 104, blower fan 2 is arranged in epicoele 101 near air outlet 103 places, gas heater 6 is arranged in cavity of resorption 102, can be arranged on according to actual needs near air inlet 104 places or be arranged near dividing plate 3 to sentence the temperature that coal sample 11 air-flows are passed in raising.Referring to Fig. 3～Fig. 7, contain the model machine structure and comprise the coal sample dish 5 of splendid attire coal sample and the coal sample holder 7 that is used for collecting sample, coal sample 11 paves uniformly in coal sample dish 5, the bottom of coal sample dish 5 offers more than one air vent 51, hot-air flow passes from air vent 51, see through uniformly coal sample 11, coal sample 11 is carried out the dehumidification operation.The top of coal sample dish 5 is provided with to contact the sealing 52 that cooperates with dividing plate 3, and coal sample holder 7 is positioned at the below of coal sample dish 5; Send sampling mechanism 15 to send the sampling operation with containing that the model machine structure links to each other and finish with the lifting of Sheng model machine structure.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.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 temperature is high to the physics and chemistry characteristic that to a certain degree can affect coal sample, 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 present invention 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 take away part coal sample 11 in order to guarantee air-flow, so the present invention 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.Further, the present invention send sampling mechanism 15 automatically by arranging, and greatly reduces the labour intensity that send the sampling operation.
In the present embodiment, be equipped with to detect the wind gage 9 of hot blast flow velocity in epicoele 101 and/or the cavity of resorption 102, 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.
Referring to Fig. 3～Fig. 7, 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, be provided with sealing gasket 12 between sealing 52 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.
In the present embodiment, sending sampling mechanism 15 is an elevating mechanism, elevating mechanism comprises the swingle 13 more than, and an end of swingle 13 links to each other with Sheng model machine structure and finishes lifting with containing the rotation of model machine structure, and the other end of swingle 13 is articulated on casing 1 or the casing 1 peripheral operation platform.Referring to Fig. 9 and Figure 10, present embodiment has two swingles 13, be articulated in the bottom in the casing 1, can be with containing the motion of model machine structure during rotation, rise to dividing plate 3 and contact, perhaps descend and extend out to that casing 1 is outer to fill sample, because coal sample 11 is sometimes very heavy, so just make operating personnel's operation more quick, reduced labour intensity.
Perhaps, in another embodiment, send sampling mechanism 15 also can be an elevating mechanism, elevating mechanism comprises the elevating screw assembly, and Sheng model machine structure is connected on the elevating screw assembly and can finishes elevating movement with the motion of elevating screw assembly.Whole elevating screw assembly is installed in the casing 1, finishes dress sample or sampling in casing 1.
Be appreciated that the purpose of sending sampling mechanism 15 among the present invention is in order to make Sheng model machine structure finish elevating movement, conveniently to fill sample and sampling, according to this thinking, can adopting the various mechanism design that can finish elevating movement.
Below only be preferred implementation of the present invention, protection scope of the present invention also not only is confined to above-described embodiment, and all technical schemes that belongs under the thinking of the present invention all belong to protection scope of the present invention.Should be pointed out that for those skilled in the art the some improvements and modifications not breaking away under the principle of the invention prerequisite should be considered as protection scope of the present invention.
Claims (6)
1. one kind can be sent the hot blast of sampling to penetrate outer circulation type coal sample dehumidifying device automatically, it is characterized in that: comprise casing (1), controller (4), send sampling mechanism (15) and be installed in the interior blower fan (2) of airtight casing (1), dividing plate (3), gas heater (6), more than one Sheng model machine structure, described dividing plate (3) is separated into epicoele (101) and cavity of resorption (102) with casing (1), described epicoele (101) top or side opening are provided with air outlet (103), the bottom of described cavity of resorption (102) or side opening are provided with air inlet (104), described blower fan (2) is arranged in epicoele (101) to be located near air outlet (103), and described gas heater (6) is arranged in cavity of resorption (102); The coal sample holder (7) that described Sheng model machine structure comprises the coal sample dish (5) of splendid attire coal sample and is used for collecting sample, the bottom of described coal sample dish (5) offers more than one air vent (51), the top of described coal sample dish (5) is provided with to contact the sealing (52) that cooperates with dividing plate (3), and described coal sample holder (7) is positioned at the below of coal sample dish (5); Describedly send sampling mechanism (15) and contain that the model machine structure links to each other and move up and down with Sheng model machine structure.
2. the hot blast of sampling that can automatically send according to claim 1 penetrates outer 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 described epicoele (101) and/or the cavity of resorption (102), and described controller (4) links to each other with blower fan (2) by a frequency converter (10); Described controller (4) according to wind gage (9) thus the wind velocity signal that gathers and default wind speed are relatively adjusted the rotating speed of blower fan (2) by frequency converter (10).
3. the hot blast of sampling that can automatically send according to claim 1 and 2 penetrates outer 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 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).
4. the hot blast of sampling that can automatically send according to claim 3 penetrates outer 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).
5. the hot blast of sampling that can automatically send according to claim 1 and 2 penetrates outer circulation type coal sample dehumidifying device, it is characterized in that: the described sampling mechanism (15) that send is an elevating mechanism, elevating mechanism comprises the swingle (13) more than, one end of described swingle (13) links to each other with Sheng model machine structure and finishes lifting with containing the rotation of model machine structure, and the other end of described swingle (13) is articulated on casing (1) or casing (1) the peripheral operation platform.
6. the hot blast of sampling that can automatically send according to claim 1 and 2 penetrates outer circulation type coal sample dehumidifying device, it is characterized in that: the described sampling mechanism (15) that send is an elevating mechanism, elevating mechanism comprises the elevating screw assembly, and described Sheng model machine structure is connected on the elevating screw assembly and can finishes elevating movement with the motion of elevating screw assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210212504.0A CN102944452B (en) | 2012-06-26 | 2012-06-26 | Hot air-penetration external circulating-type coal sample dehumidification device having automatic sample feeding/taking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210212504.0A CN102944452B (en) | 2012-06-26 | 2012-06-26 | Hot air-penetration external circulating-type coal sample dehumidification device having automatic sample feeding/taking function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102944452A true CN102944452A (en) | 2013-02-27 |
| CN102944452B CN102944452B (en) | 2015-03-18 |
Family
ID=47727414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210212504.0A Active CN102944452B (en) | 2012-06-26 | 2012-06-26 | Hot air-penetration external circulating-type coal sample dehumidification device having automatic sample feeding/taking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102944452B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB297480A (en) * | 1927-09-23 | 1929-12-23 | Henry Warrington Cowan | Improvements in process and apparatus for drying lumber and other moisture-containing materials |
| JPS54150773A (en) * | 1978-05-19 | 1979-11-27 | Toshiba Corp | Dryer |
| CN201041455Y (en) * | 2007-05-23 | 2008-03-26 | 莱州市电子仪器有限公司 | Drying device dedicated for spinning analysis |
| CN202631334U (en) * | 2012-06-26 | 2012-12-26 | 湖南三德科技发展有限公司 | Through-air externally-circulating type coal sample dehumidifying device capable of feeding and sampling automatically |
-
2012
- 2012-06-26 CN CN201210212504.0A patent/CN102944452B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB297480A (en) * | 1927-09-23 | 1929-12-23 | Henry Warrington Cowan | Improvements in process and apparatus for drying lumber and other moisture-containing materials |
| JPS54150773A (en) * | 1978-05-19 | 1979-11-27 | Toshiba Corp | Dryer |
| CN201041455Y (en) * | 2007-05-23 | 2008-03-26 | 莱州市电子仪器有限公司 | Drying device dedicated for spinning analysis |
| CN202631334U (en) * | 2012-06-26 | 2012-12-26 | 湖南三德科技发展有限公司 | Through-air externally-circulating type coal sample dehumidifying device capable of feeding and sampling automatically |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102944452B (en) | 2015-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104359288B (en) | The wind saturating formula drying equipment of material can be swept | |
| CN102937539B (en) | Hot blast penetrates internal-circulation type coal sample dehumidifying device | |
| CN107560017A (en) | Automatic dehumidifier based on moisture absorption sponge | |
| CN202661310U (en) | Hot air penetrating circulating type coal sample dehumidifying device with automatic sample sending and taking function | |
| CN109231780A (en) | Intelligent low-power consumption sludge low temperature anhydration system | |
| CN202660862U (en) | Hot air penetration outer circulation type coal sample dehumidifying device | |
| CN204227863U (en) | The saturating drying equipment of upset blanking type wind | |
| CN102937370B (en) | Hot blast penetrates outer circulation type coal sample dehumidifying device | |
| CN203534081U (en) | Blowing hot air penetrating dry box | |
| CN202661309U (en) | Hot-air passing internal circulation type coal sample dehumidification device | |
| CN102937540A (en) | Hot air penetrating internal circulation coal sample dehumidifying device capable of automatically conveying samples and taking samples | |
| CN202631334U (en) | Through-air externally-circulating type coal sample dehumidifying device capable of feeding and sampling automatically | |
| CN103674656B (en) | External blower type coal sample dehumidifying device | |
| CN102944452A (en) | Hot air-penetration external circulating-type coal sample dehumidification device having automatic sample feeding/taking function | |
| CN102175073B (en) | Iron ore concentrate drying device and method for pelletizing | |
| CN203837983U (en) | External-fan type coal sample dehumidifying device | |
| CN209431707U (en) | The cooling device of frozen compressed air dryer | |
| CN104126660A (en) | All-weather fluidized bed method grain drier | |
| CN204227832U (en) | The saturating formula drying equipment of wind of material can be swept | |
| CN203969080U (en) | Energy-saving fluidized bed process cereal continuous drier | |
| CN204227856U (en) | Band blows clearly the saturating formula drying equipment of wind of function | |
| CN203672057U (en) | Ventilation drying box with auxiliary heating | |
| CN102087071B (en) | Alternately circulating air drying device | |
| CN203464646U (en) | Air-volume flow equalizing device for hot-air transmission type coal-sample dehumidifying equipment | |
| CN103398567B (en) | Air quantity flow equalization device for hot air penetration coal sample dehumidification equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 410205 Changsha high tech Zone, Tongzi, west slope road, No. 558, No. Applicant after: Hunan Sundy Science and Technology Development Co., Ltd. Address before: 410205 Changsha high tech Zone, Tongzi, west slope road, No. 558, No. Applicant before: Sande Science and Technology Development Co., Ltd., Hunan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SANDE SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD., HUNAN TO: HUNAN SUNDYSCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |