CN102538421A - Method and device for drying by heating and dehydrating - Google Patents
Method and device for drying by heating and dehydrating Download PDFInfo
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- CN102538421A CN102538421A CN2012100490317A CN201210049031A CN102538421A CN 102538421 A CN102538421 A CN 102538421A CN 2012100490317 A CN2012100490317 A CN 2012100490317A CN 201210049031 A CN201210049031 A CN 201210049031A CN 102538421 A CN102538421 A CN 102538421A
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Abstract
The invention discloses a device for drying by heating and dehydrating. The device comprises a material outlet, one or a small number of hot air inlets, a heat source, an air outlet, a material inlet and a drying tunnel, wherein the material outlet and the material inlet are formed at two ends of the drying tunnel; the air outlet is formed at one end of the drying tunnel; the hot air inlets are formed above the drying tunnel; and the heat source is connected with the hot air inlets and connected with a fan through an air inlet channel. According to the method and device for drying by heating and dehydrating, a material to be dried is dried by virtue of naturally formed temperature difference, so that a large number of hot air inlets are not required to be additionally arranged, and the required air amount is small, so, the energy consumption can be reduced greatly, and the original color and effective components of the material can be kept to the maximum extent; and the heat energy of the air outlet enters into the heat source through an air return channel, the fan and the air inlet channel, so that the heat energy can be recycled effectively, and the energy-saving effect is good.
Description
Technical field
The present invention relates to a kind of thermal dehydration drying means and device, relate in particular to a kind of thermal dehydration drying means and device that is used for medicinal raw material and semi-finished product, raw-food material and agricultural byproducts etc., belong to the heat drying equipment technical field.
Background technology
Drying is exactly from various materials, to remove wet process of dividing, and various materials can be solid, liquid or gas, and solid comprises bulk material, fiber material, particulate material, fine powder material or the like again, and generally be the moisture in the material wet the branch, also can be other solvent.The heat drying method is to utilize heat energy to add thermal material, the moisture in the gasification materiel or other solvent, thus moisture or other solvent are discharged from material, realize the function of dried material.Usually, be to select to utilize air to come dried material, be about to air and heat in advance and send into drier; With the heat transferred material, the moisture in the gasification materiel forms water vapour in drying; And take water vapour out of drier with air, drier inside then obtains through dried material.Material can be removed the combination moisture in the material through heat drying, reaches the desired moisture content of product or raw material.
Usually; The air drying means that we adopt all is the isothermal heating; That is to say that the temperature that will guarantee each space in the drying tunnel is basic identical,, have only three kinds of selections: the first, the size of restriction oven dry casing if realize above-mentioned purpose; So just can when guaranteeing identical power consumption, obtain the isothermal environment in each space in drying tunnel, but this has just limited the extensive utilization of suitability for industrialized production; The second, do not consider power consumption, further increase thermal power, that is to say that the oven dry casing for designated volume provides the heat supply much larger than its power consumption demand, this has just improved the oven dry energy consumption on the whole greatly; Three, on the basis of oven dry casing designated volume, a plurality of hot blast imports are set,, keep as much as possible that temperature is consistent in the whole space with the temperature difference of compensation large space.Above-mentioned isothermal heat drying method is owing to the whole oven dry system consistent temperature of keeping that need not stop, so power consumption is bigger; Above-mentioned on the other hand isothermal heat drying method is applicable to the general material that needs oven dry; But for some material such as matrimony vine with property, then can't use, reason is; Because of matrimony vine contains abundant LBP-X, fat, protein, free amino acid, taurine, betaine, vitamin B1, B2, E, C and carotenoid; In addition, also contain a large amount of mineral elements, like potassium, sodium, calcium, magnesium, iron, copper, manganese, zinc, selenium etc.Wherein, Important component in the LBP-X comprises acid heteroglycan, and it is to be made up of arabinose, wood sugar, galactolipin, mannose, glucose, galacturonic acid etc., and a large amount of sugars is contained in visible matrimony vine inside; When matrimony vine is carried out drying and dehydrating; When the isothermal heating environment of available technology adopting about 65 ℃ carries out the drying and dehydrating of isothermal to matrimony vine, be easy to cause the inner LBP-X of matrimony vine to be dried and separate out, form one deck sugar layer on the matrimony vine surface; Under the effect of sugar layer, be sticked together between matrimony vine and the matrimony vine like this, influenced color and luster and the quality of the matrimony vine behind drying and dehydrating.
Chinese patent document CN2080154U discloses a kind of tunnel type drying and dewatering equipment; Form by hot-blast stove, tunnel type oven dry storehouse, transport, pipeline assembly and electrical apparatus control system; The tunnel type oven dry has 2-10 drying chamber in the storehouse; The hot blast temperature control device is installed between each drying chamber and the hot-blast stove, and the hot air inlet of each drying chamber and moisture exhausting port are arranged for turning upside down and are installed, and between drying chamber middle part and the hot air inlet hot blast side blast pipe are housed.This technology is connected hot-blast stove through warm-air pipe with each drying chamber, the hot blast temperature control device is housed on the warm-air pipe, adjusts the temperature in the different drying chambers, makes formation temperature subregion in the oven dry storehouse, realizes the drying and dewatering to material.Though this technology provides the drying and dewatering structure that can obtain thermograde, for for the special material of matrimony vine etc.; When stating the drying and dewatering device in the use; Can give matrimony vine and wait for the drying and dewatering environment of the material of dried, but because each drying chamber in this equipment all is provided with hot air inlet and moisture exhausting port with thermograde, moisture exhausting port the instant discharge of steam that will in the drying and dewatering process, generate in each drying chamber is set; In moisture discharge, also the heat of inside has been discharged a part; In order to guarantee temperature requirement set in the drying chamber, just need further to replenish hot blast, so just caused the increase of power consumption.On the other hand, the inventor discharges steam in drying course through discovering immediately; The moisture difference in the hydrone that materials such as matrimony vine are inner and the external world is very big; Because the imbalance of above-mentioned moisture difference is easy to separate out rapidly, can't form the drying course that a moisture outwards discharges gradually; And tangible constricted fold appears in the outward appearance that is easy to influence materials such as matrimony vine of separating out rapidly of moisture, thereby influenced the quality of materials such as matrimony vine; In addition; In the process that above-mentioned moisture is separated out rapidly, also be easy to be with a part of sugar to separate out, form one deck sugar layer on the matrimony vine surface; Like this between matrimony vine and the matrimony vine under the effect of sugar layer and be sticked together, influenced color and luster and the quality of the matrimony vine behind drying and dehydrating.
Summary of the invention
First technical problem to be solved by this invention is that thermal dehydration drying device of the prior art is provided with moisture exhausting port at each drying chamber; In drying course, steam is discharged immediately; The moisture difference in the hydrone that materials such as matrimony vine are inner and the external world is very big, and moisture is easy to separate out rapidly owing to the imbalance of above-mentioned moisture difference; Tangible constricted fold appears in the outward appearance that influences materials such as matrimony vine easily, thereby has influenced the quality of materials such as matrimony vine; In addition; In the process that above-mentioned moisture is separated out rapidly; Also be easy to be with a part of sugar to separate out, form one deck sugar layer, under the effect of sugar layer, be sticked together between matrimony vine and the matrimony vine like this on the matrimony vine surface; Influenced color and luster and the quality of the matrimony vine behind drying and dehydrating, and then a kind of thermal dehydration drying device that behind drying and dehydrating, still can guarantee matrimony vine color and luster and quality is provided.
Second technical problem to be solved by this invention is thermal dehydration drying device of the prior art owing on each drying chamber, moisture exhausting port is set; The instant discharge of steam that will in the drying and dewatering process, generate in each drying chamber; In moisture discharge, also the heat of inside has been discharged a part; In order to guarantee temperature requirement set in the drying chamber; Just need further to replenish hot blast,, and then provide a kind of energy consumption low thermal dehydration drying device like this with regard to the problem of the increase that caused power consumption.
The invention provides a kind of thermal dehydration drying device, comprise Drying tunnel;
Charging aperture and discharging opening are separately positioned on the two ends of said Drying tunnel;
Hot blast import and air-out moisture exhausting port;
Said hot blast import is one or more, is arranged on said discharging oral-lateral, and is said
The air-out moisture exhausting port is arranged on said charging oral-lateral.
Be connected with blower fan with said hot blast import, said blower fan also is connected with said air-out moisture exhausting port.
Said blower fan is provided with the hot blast wind-supplying mouth with the pipeline that said air-out moisture exhausting port is connected.
Said air-out moisture exhausting port is by perpendicular to the air outlet of said Drying tunnel and be connected on the said air outlet and perpendicular to the moisture exhausting port of said air outlet and form.
Said Drying tunnel top layer coats and to be provided with heat-insulation layer, and said heat-insulation layer is by at the insulation inner casing of internal layer, form at outer field lagging casing and the drying tunnel heat preservation rock layer between said internal layer and skin.
From said hot blast import to said air-out moisture exhausting port, the temperature drop of said Drying tunnel is 0.5-3 ℃/meter.
When the length of said Drying tunnel was 60 meters, temperature drop was 0.5 ℃/meter.
When the length of said Drying tunnel was 10 meters, temperature drop was 3 ℃/meter.
The present invention also provides a kind of thermal dehydration drying means, comprises the steps:
First is waited to dry material in charging aperture is sent into Drying tunnel, and it is 35-45 ℃ that hot blast temperature is set, and in the hot blast import gets into said Drying tunnel, said Drying tunnel is heated 3-7h;
Improving hot blast temperature is 40-55 ℃, and said Drying tunnel is heated 10h at least;
Further improving hot blast temperature is 55-70 ℃, and said Drying tunnel is heated, and material is carried out bake drying handle, and disposes to the drying materials drying and dehydrating; When first material to be dried moved to said discharging opening place, keeping the hot blast temperature of hot blast import was 55-70 ℃, treated the oven dry material and carried out drying and dehydrating and handle;
Hot blast is discharged behind said hot blast inlet flow to said air-out moisture exhausting port.
Said hot blast returns the hot blast import under the effect of blower fan behind said hot blast inlet flow to said air-out moisture exhausting port.
Said hot blast is mended into air through the hot blast wind-supplying mouth behind said hot blast inlet flow to said air-out moisture exhausting port.
Said hot blast is discharged through moisture exhausting port from said hot blast inlet flow part to the said air-out moisture exhausting port, and a part is returned the hot blast import through air outlet in addition.
Said hot blast is in the hot blast import gets into said Drying tunnel the time; Drying tunnel is incubated; The Drying tunnel top layer coated heat-insulation layer is set, said heat-insulation layer is by at the insulation inner casing of internal layer, form at outer field lagging casing and the drying tunnel heat preservation rock layer between said internal layer and skin
The present invention has following advantage:
1, thermal dehydration drying device hot blast of the present invention import is arranged on the discharging oral-lateral; The air-out moisture exhausting port is arranged on the charging oral-lateral; Steam exists all the time in drying course, and the inner hydrone of materials such as matrimony vine differs less with extraneous moisture, makes moisture slowly separate out; Avoid the outward appearance of materials such as matrimony vine tangible constricted fold to occur, influence the quality of materials such as matrimony vine; In addition, in the process that above-mentioned moisture is slowly separated out, avoid forming one deck sugar layer, cause between matrimony vine and the matrimony vine under the effect of sugar layer, to be sticked together, promoted color and luster and the quality of the matrimony vine behind the drying and dehydrating on the matrimony vine surface.
2, thermal dehydration drying device hot blast of the present invention import is arranged on the discharging oral-lateral; The air-out moisture exhausting port is arranged on the charging oral-lateral; Steam exists all the time in drying course, has made full use of the heat in the steam, and the gas that utilizes blower fan that the air-out moisture exhausting port is gone out simultaneously returns the hot blast import; Realized that heat energy effectively reclaims, good energy-conserving effect.
3, thermal dehydration drying means of the present invention; Wait to dry material in charging aperture is sent into Drying tunnel when first, it is 35-45 ℃ that hot blast temperature is set, after heating a period of time; Improving hot blast temperature is 40-55 ℃; After heating a period of time again, further improving hot blast temperature is 55-70 ℃, keeps this temperature to drying materials drying and dehydrating to dispose; Keeping the hot blast temperature of hot blast import later on is 55-70 ℃; Treat the oven dry material and carry out the drying and dehydrating processing; This method hot blast forms the thermograde of nature in process of flowing forward, guaranteed that the baking temperature of every batch materials from the charging aperture to the discharging opening raises gradually, is applicable to that industrialization is dry.
Description of drawings
For content of the present invention is understood more easily, the present invention combines the accompanying drawing and the specific embodiment that content of the present invention is further explained;
Shown in Figure 1 is the structural representation of thermal dehydration drying device of the present invention;
Wherein, Reference numeral is:
The 2-discharging opening, the import of 3-hot blast, the 6-blower fan, 7-hot blast wind-supplying mouth, 10-air-out moisture exhausting port, the 11-charging aperture, the 12-Drying tunnel, the 13-lagging casing, 14-drying tunnel heat preservation rock layer, 15-is incubated inner casing.
The specific embodiment
Embodiment 1
Thermal dehydration drying device of the present invention, its structure is seen Fig. 1, comprises Drying tunnel 12;
Charging aperture 11 and discharging opening 2 are separately positioned on the two ends of said Drying tunnel 12, and the said charging aperture 11 of present embodiment is arranged on the right-hand member of said Drying tunnel 12, and material mouthfuls 2 is arranged on the left end of said Drying tunnel 12; Hot blast import 3 and air-out moisture exhausting port 10; Said hot blast import 3 is one or more, is arranged on said discharging opening 2 sides, and present embodiment hot blast import 3 is one, and said air-out moisture exhausting port 10 is arranged on said charging aperture 11 sides.
As preferred embodiment, be connected with blower fan 6 with said hot blast import 3, said blower fan 6 also is connected with said air-out moisture exhausting port 10.Further, on said blower fan 6 and pipeline that said air-out moisture exhausting port 10 is connected, also be provided with hot blast wind-supplying mouth 7.Said air-out moisture exhausting port 10 is by perpendicular to the air outlet of said Drying tunnel 12 and be connected on the said air outlet and perpendicular to the moisture exhausting port of said air outlet and form.For reducing thermal loss; As the preferred embodiment of the present invention; Coat on said Drying tunnel 12 top layers and to be provided with heat-insulation layer, said heat-insulation layer is by at the insulation inner casing 15 of internal layer, form at outer field lagging casing 13 and the drying tunnel heat preservation rock layer 14 between said internal layer and skin.
Embodiment 2
Thermal dehydration drying device described in the embodiment of the invention 1, the temperature drop in the tunnel changes with the variation of length of tunnel 12, and the length that Drying tunnel 12 is set in the present embodiment is 60 meters, and temperature drop is 0.5 ℃/meter.
Embodiment 3
Thermal dehydration drying device described in the embodiment of the invention 1, the length that Drying tunnel 12 is set is 10 meters, temperature drop is 3 ℃/meter.
Embodiment 4
A kind of thermal dehydration drying means of the present invention; Comprise the steps: first is waited to dry matrimony vine in charging aperture 11 is sent into Drying tunnel 12; It is 35 ℃ that hot blast temperature is set, and gets in the said Drying tunnel 12 through hot blast import 3, and said Drying tunnel 12 is heated 7h;
Improving hot blast temperature is 40 ℃, and said Drying tunnel 12 is heated 15h;
Further improving hot blast temperature is 55 ℃, and said Drying tunnel 12 is heated, and material is carried out bake drying handle, and disposes to the drying materials drying and dehydrating; When first material to be dried moved to said discharging opening 2 places, keeping the hot blast temperature of hot blast import 3 was 55 ℃, treated the oven dry material and carried out drying and dehydrating and handle;
Hot blast flows to said air-out moisture exhausting port 10 backs from said hot blast import 3 and discharges.
Embodiment 5
A kind of thermal dehydration drying means of the present invention, on the basis of embodiment 4, after blower fan 6 was set, said hot blast returned hot blast import 3 after flowing to said air-out moisture exhausting port 10 from said hot blast import 3 under the effect of blower fan 6.
Embodiment 6
A kind of thermal dehydration drying means of the present invention, on the basis of embodiment 5, after hot blast wind-supplying mouth 7 was set, said hot blast flowed to said air-out moisture exhausting port 10 backs from said hot blast import 3 and mends air through hot blast wind-supplying mouth 7.
Embodiment 7
A kind of thermal dehydration drying means of the present invention, on the basis of embodiment 6, said hot blast flows to said air-out moisture exhausting port 10 back parts from said hot blast import 3 and discharges through moisture exhausting port, and a part is returned hot blast import 3 through air outlet in addition.
Coating is provided with heat-insulation layer on said Drying tunnel 12 top layers; Said heat-insulation layer is by at the insulation inner casing 15 of internal layer, form at outer field lagging casing 13 and the drying tunnel heat preservation rock layer 14 between said internal layer and skin; When said hot blast gets in the said Drying tunnel 12 through hot blast import 3; Drying tunnel 12 is incubated, prevents thermal loss.
Embodiment 8
A kind of thermal dehydration drying means of the present invention; Comprise the steps: first is waited to dry matrimony vine in charging aperture 11 is sent into Drying tunnel 12; It is 40 ℃ that hot blast temperature is set, and gets in the said Drying tunnel 12 through hot blast import 3, and said Drying tunnel 12 is heated 5h; Improving hot blast temperature is 48 ℃, and said Drying tunnel 12 is heated 12h;
Further improving hot blast temperature is 65 ℃, and said Drying tunnel 12 is heated, and material is carried out bake drying handle, and disposes to the drying materials drying and dehydrating; When first material to be dried moved to said discharging opening 2 places, keeping the hot blast temperature of hot blast import 3 was 65 ℃, treated the oven dry material and carried out drying and dehydrating and handle;
After hot blast flows to said air-out moisture exhausting port 10 from said hot blast import 3, mend air, under the effect of blower fan 6, return hot blast import 3 through hot blast wind-supplying mouth 7.
Embodiment 9
A kind of thermal dehydration drying means of the present invention; Comprise the steps: first is waited to dry matrimony vine in charging aperture 11 is sent into Drying tunnel 12; It is 45 ℃ that hot blast temperature is set, and gets in the said Drying tunnel 12 through hot blast import 3, and said Drying tunnel 12 is heated 3h; Improving hot blast temperature is 55 ℃, and said Drying tunnel 12 is heated 10h;
Further improving hot blast temperature is 70 ℃, and said Drying tunnel 12 is heated, and material is carried out bake drying handle, and disposes to the drying materials drying and dehydrating; When first material to be dried moved to said discharging opening 2 places, keeping the hot blast temperature of hot blast import 3 was 70 ℃, treated the oven dry material and carried out drying and dehydrating and handle;
Hot blast flows to said air-out moisture exhausting port 10 backs from said hot blast import 3 and mends the air hot blast through hot blast wind-supplying mouth 7, under the effect of blower fan 6, returns hot blast import 3.
Though the present invention has carried out detailed elaboration through above-mentioned specific embodiment to it; But; Any form that does not exceed the claim protection domain that those skilled in the art should be understood that on this basis to be made and the variation of details all belong to invention which is intended to be protected.
Claims (13)
1. a thermal dehydration drying device comprises Drying tunnel (12);
Charging aperture (11) and discharging opening (2) are separately positioned on the two ends of said Drying tunnel (12);
Hot blast import (3) and air-out moisture exhausting port (10);
It is characterized in that:
Said hot blast import (3) is one or more, is arranged on said discharging opening (2) side, and said air-out moisture exhausting port (10) is arranged on said charging aperture (11) side.
2. thermal dehydration drying device according to claim 1 is characterized in that: be connected with blower fan (6) with said hot blast import (3), said blower fan (6) also is connected with said air-out moisture exhausting port (10).
3. thermal dehydration drying device according to claim 1 and 2 is characterized in that: the pipeline that said blower fan (6) is connected with said air-out moisture exhausting port (10) is provided with hot blast wind-supplying mouth (7).
4. thermal dehydration drying device according to claim 3 is characterized in that: said air-out moisture exhausting port (10) is by perpendicular to the air outlet of said Drying tunnel (12) and be connected on the said air outlet and perpendicular to the moisture exhausting port of said air outlet and form.
5. according to the arbitrary described thermal dehydration drying device of claim 1-4; It is characterized in that: said Drying tunnel (12) top layer coats and to be provided with heat-insulation layer, said heat-insulation layer by the insulation inner casing (15) that is positioned at internal layer, be positioned at outer field lagging casing (13) and the drying tunnel heat preservation rock layer (14) between said internal layer and skin is formed.
6. according to the arbitrary described thermal dehydration drying device of claim 1-5, it is characterized in that: from said hot blast import (3) to said air-out moisture exhausting port (10), the temperature drop of said Drying tunnel (12) is 0.5-3 ℃/meter.
7. thermal dehydration drying device according to claim 6 is characterized in that: when the length of said Drying tunnel (12) was 60 meters, temperature drop was 0.5 ℃/meter.
8. thermal dehydration drying device according to claim 6 is characterized in that: when the length of said Drying tunnel (12) was 10 meters, temperature drop was 3 ℃/meter.
9. a thermal dehydration drying means comprises the steps:
First is waited to dry material in charging aperture (11) is sent into Drying tunnel (12), and it is 35-45 ℃ that hot blast temperature is set, and in hot blast import (3) gets into said Drying tunnel (12), said Drying tunnel (12) is heated 3-7h;
Improving hot blast temperature is 40-55 ℃, and said Drying tunnel (12) is heated 10h at least;
Further improving hot blast temperature is 55-70 ℃, and said Drying tunnel (12) is heated, and material is carried out bake drying handle, and disposes to the drying materials drying and dehydrating; Move to said discharging opening (2) when locating to first material to be dried, keeping the hot blast temperature of hot blast import (3) is 55-70 ℃, treats the oven dry material and carries out drying and dehydrating and handle;
Hot blast flows to said air-out moisture exhausting port (10) back from said hot blast import (3) and discharges.
10. thermal dehydration drying means according to claim 9 is characterized in that: said hot blast returns hot blast import (3) after flowing to said air-out moisture exhausting port (10) from said hot blast import (3) under the effect of blower fan (6).
11. thermal dehydration drying means according to claim 9 is characterized in that: said hot blast flows to said air-out moisture exhausting port (10) back from said hot blast import (3) and mends air through hot blast wind-supplying mouth (7).
12. according to claim 9 or 10 described thermal dehydration drying means; It is characterized in that: said hot blast flows to said air-out moisture exhausting port (a 10) back part from said hot blast import (3) and discharges through moisture exhausting port, and a part is returned hot blast import (3) through air outlet in addition.
13. according to claims 9 to 12 arbitrary described thermal dehydration drying means; It is characterized in that: said hot blast is in hot blast import (3) gets into said Drying tunnel (12) time; Drying tunnel (12) is incubated; Drying tunnel (12) top layer coated heat-insulation layer is set, said heat-insulation layer by the insulation inner casing (15) that is positioned at internal layer, be positioned at outer field lagging casing (13) and the drying tunnel heat preservation rock layer (14) between said internal layer and skin is formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210049031.7A CN102538421B (en) | 2012-02-29 | 2012-02-29 | Method and device for drying by heating and dehydrating |
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| CN201210049031.7A CN102538421B (en) | 2012-02-29 | 2012-02-29 | Method and device for drying by heating and dehydrating |
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| CN102538421A true CN102538421A (en) | 2012-07-04 |
| CN102538421B CN102538421B (en) | 2014-05-14 |
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Cited By (6)
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| CN104280943A (en) * | 2014-10-31 | 2015-01-14 | 合肥鑫晟光电科技有限公司 | Heating cavity and thermosetting device |
| CN104497132A (en) * | 2014-12-26 | 2015-04-08 | 广东百维生物科技有限公司 | Drying machine for fish collagen protein production line |
| CN104544502A (en) * | 2015-01-20 | 2015-04-29 | 贡山普拉底富民农产品有限公司 | Technological process of amomum tsaoko processing in tunnel-type drying room |
| CN106561806A (en) * | 2016-11-01 | 2017-04-19 | 南京师范大学 | A temperature-variable grain drying device |
| CN108036626A (en) * | 2018-01-13 | 2018-05-15 | 张培森 | A kind of concentration hydrofuge, the furnace drying method and its equipment of hot wind whole recycling |
| CN112867903A (en) * | 2018-10-26 | 2021-05-28 | 嘉露酒庄 | Low profile design air channel system and method for providing uniform air flow in a refractive window dryer |
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| CN108036626A (en) * | 2018-01-13 | 2018-05-15 | 张培森 | A kind of concentration hydrofuge, the furnace drying method and its equipment of hot wind whole recycling |
| CN112867903A (en) * | 2018-10-26 | 2021-05-28 | 嘉露酒庄 | Low profile design air channel system and method for providing uniform air flow in a refractive window dryer |
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| Publication number | Publication date |
|---|---|
| CN102538421B (en) | 2014-05-14 |
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