CN105124021A - Green tea vacuum low temperature drying device - Google Patents
Green tea vacuum low temperature drying device Download PDFInfo
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- CN105124021A CN105124021A CN201510625193.4A CN201510625193A CN105124021A CN 105124021 A CN105124021 A CN 105124021A CN 201510625193 A CN201510625193 A CN 201510625193A CN 105124021 A CN105124021 A CN 105124021A
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- green tea
- low temperature
- flue
- furnace wall
- temperature drying
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Abstract
The invention discloses a green tea vacuum low temperature drying device, comprising a furnace wall and a furnace pipe arranged inside the furnace wall, wherein multiple layers of material beds are arranged in the furnace pipe from top to bottom, a heat supply device is arranged between the furnace wall and the furnace pipe, and the upper end of the furnace pipe is connected to a vacuumizing device through a pipeline. Green tea can be dried under a low temperature vacuum environment, thus being essentially different from presently adopted drying under high temperature and normal pressure, and the difference lies in that rolled leaves are dried under low temperature vacuum, influence on fragrance, colour quality and mouthfeel of the green tea due to a 'dry outside and wet inside' 'braising-steaming phenomenon' produced by presently drying under high temperature and normal pressure is avoided, meanwhile dry materials are in a still state, the shape is not easy to damage, and the strip shape of the green tea is obviously improved. A heat source of the device can adopt low-pressure steam, waste heat steam, hot water or other media, certain energy sources are saved, and electric heating also can be used for achieving high temperature to dry other products.
Description
Technical field
The present invention relates to tea processing device field, specifically a kind of green tea vacuum and low temperature drying unit.
Background technology
The typical process flow of current producing green tea processing is: Titian-fried dry-sorting of complete-knead-deblocking-dry.Wherein drying course can remove the water content of in fresh leaf nearly 65%, the selection of stoving process method and drying unit directly affects the quality of tealeaves, chain scraper, roller drying machine is mainly adopted to carry out auto-drying under high temperature, normal pressure at present, the temperature adopted during oven dry is generally between 120-130 DEG C, and green tea blade is dried in tumbling motion simultaneously.And low temperature drying can improve blue or green fragrance, mouthfeel, the chromaticness of tealeaves greatly, the quality of improving product, but consuming time longer, production efficiency is extremely low, and tea plantation does not also adopt low temperature process scheme to carry out drying tea leaves at present.
Due to the poor thermal conductivity of tealeaves, heat transfer is slow, if the too high leaf skin that makes of temperature is first done, forms " duricrust " and hinders leaf internal moisture to continue outside diffusive evaporation.The leaf of this " outer dry interior wet ", internal condensate steam, and the chemical reaction occurred makes fragrance deterioration, and leaf look dries up, and easily produces " vexed steaming phenomenon ".Also can produce certain serious fragrance when 120-130 DEG C of hyperthermia drying, burnt flavour simultaneously.Affect blue or green fragrance, chromaticness, the mouthfeel of green tea, reduce the quality of green tea.Meanwhile, drying tea leaves process Leaf is that motion is rolled, and the leaf plasticity of kneading is very large, and any power, to its work done, can make it distortion, make shaping after tealeaves ornamental decline, also can reduce the quality of tealeaves.That is the process that current this high temperature, rolling type dry tealeaves all has a certain impact to the color of tealeaves, shape, governs the making of high-end green tea.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of green tea vacuum and low temperature drying unit.
Technical scheme: for solving the problems of the technologies described above, a kind of green tea vacuum and low temperature drying unit of the present invention, comprise furnace wall and be located at the flue of its inside, described flue inside is provided with multilayer dose bed from top to bottom; Be provided with heating plant between described furnace wall and flue, flue upper end connects vacuum extractor by pipeline.
Further, described vacuum means is set to vavuum pump, and the pipeline connecting vavuum pump and flue is provided with condenser.
Further, the pipeline of described connection flue and condenser is provided with atmospheric valve.
Further, described heating plant comprises the steam radiating tube be located between furnace wall and flue, and steam radiating tube connects steam source.
Further, described heating plant also comprises the electrothermal tube be evenly located between furnace wall and flue from top to bottom.
Further, described furnace wall is insulation furnace wall, filling with insulation material in this insulation furnace wall.
Further, described bed of material comprises base plate, and this base plate surrounding is provided with striker plate, and the striker plate of push-and-pull bed of material is provided with handle.
Further, described base plate is the meshed base plate of tool.
Further, below described base plate, one group of edge is respectively provided with one group of roller, in flue, is provided with the guide rail rolled for roller.
Beneficial effect: a kind of green tea vacuum and low temperature drying unit of the present invention, can dry green tea under low-temperature vacuum environment, with drying the difference having matter under the high-temperature pressure adopted at present, dried material remains static, shape is not fragile, all has clear improvement to the look of green tea, fragrance and bar shaped.This device thermal source can adopt low-pressure steam, waste hot steam, hot water or other media to carry out, and saves certain energy, and electrical heating can be used to obtain other products of hyperthermia drying simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is bed of material structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
A kind of green tea vacuum and low temperature drying unit as shown in Figure 1 and Figure 2, comprise the furnace wall 1 with heat insulation function and the flue 2 being arranged on inside, furnace wall 1, filling with insulation material in the furnace wall 1 with heat insulation function, flue 2 inside arranges multilayer dose bed 3 from top to bottom equally spacedly; Between furnace wall 1 and flue 2, heating plant is installed, heating plant comprises from top to down and is arranged on steam radiating tube 4 between furnace wall 1 and flue 2, steam radiating tube 4 connects steam source 11, and heating plant also comprises the electrothermal tube 5 be evenly arranged between furnace wall 1 and flue 2 from top to bottom.Flue 2 has sealing function, and flue 2 upper end connects vacuum extractor by pipeline.Vacuum means is set to vavuum pump 6, and the pipeline connecting vavuum pump 6 and flue 2 is provided with condenser 7, and connection flue 2 and the pipeline of condenser 7 are also provided with atmospheric valve 8.Bed of material 3 comprises base plate 31, four peripheries of this base plate 31 upper surface is equipped with striker plate 32, the striker plate 32 of push-and-pull bed of material 3 is provided with handle 33, is convenient to bed of material 3 to push or pull out flue 2.Base plate 31 is the meshed base plate 31 of tool, can be wire netting.One group of roller 34 is respectively equipped with below base plate 31, one group of edge, at flue 2 built with the guide rail rolled for roller 34.
The course of work:
Green tea drying unit of the present invention, in use, can coordinate control device to operate, and carries out auto-controll operation.
First, evenly putting on the bed of material 3 of flue 2 drawer type by having kneaded the tealeaves after deblocking in first operation, switching on power after then closing the hermatic door on flue 2, regulate temperature in drying unit between 50-60 DEG C, press vavuum pump 6 start key, start to vacuumize; Open steam valve 9 again, start to the jet chimney gas transmission between furnace wall 1 and flue 2, by thermal source Transmit evenly to the bed of material 3 in flue 2; Meanwhile, the working time is set.While along with temperature, vacuum up in furnace wall 1, flue 2, in tealeaves blade, institute's water content starts evaporation.In evaporation process, vavuum pump 6 is successively outwards emptying, the water vapour be evaporated in blade is constantly sucked out outside stove, guarantees that the material of stove has rapid evaporation moisture content under certain vacuum, discharge after the water vapour of sucking-off is also condensed into the globule by condenser 7.
In the course of work, steam provides high-temperature steam to heat material in flue 2 by giving stove internal steam pipe road after tubing pump 9 supercharging, when in flue 2, temperature is close to design temperature, by the temperature feedback of the temperature sensor senses of setting in flue 2, control tubing pump 10 and steam valve 9 reduce steam and enter pressure and flow, thorough closing duct pump 10 and steam valve 9 when in-furnace temperature reaches design temperature.Along with the moisture content of tealeaves material constantly evaporates, in flue 2, temperature can decline gradually, and when dropping to setting value minimum requirements, steam valve 9 is opened automatically, tubing pump 10 is started working and to be heated up to stove internal steam pipe, makes the temperature in flue 2 keep within setting range so all the time.
When reaching the setting working time, tubing pump 10 quits work, and stops to heat supply in stove; Then vavuum pump 6 is shut down and is found time, and opens atmospheric valve 8 simultaneously and makes to recover normal pressure in flue 2, be convenient to open hermatic door and take out material.This drying unit is except heating as using electric energy except thermal source with steam, and particularly when not having steam condition, controlling flue 2 temperature by thermocouple sensor such as electrothermal tube 5 is also very easily.This device, except being mainly used in vacuum and low temperature in high-end producing green tea process and drying, can also be used for hyperthermia drying unclassified stores under normal pressure, as black tea, grain, dredges the drying and dewatering of dish class.Generally this device low temperature adopts vacuum drying, adopts hyperthermia drying, according to the flexible selection function of concrete material characteristics under normal pressure.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a green tea vacuum and low temperature drying unit, is characterized in that: comprise furnace wall and be located at the flue of its inside, described flue inside is provided with multilayer dose bed from top to bottom; Be provided with heating plant between described furnace wall and flue, flue upper end connects vacuum extractor by pipeline.
2. a kind of green tea vacuum and low temperature drying unit according to claim 1, is characterized in that: described vacuum means is set to vavuum pump, and the pipeline connecting vavuum pump and flue is provided with condenser.
3. a kind of green tea vacuum and low temperature drying unit according to claim 2, is characterized in that: the pipeline of described connection flue and condenser is provided with atmospheric valve.
4. a kind of green tea vacuum and low temperature drying unit according to claim 1, is characterized in that: described heating plant comprises the steam radiating tube be located between furnace wall and flue, and steam radiating tube connects steam source.
5. a kind of green tea vacuum and low temperature drying unit according to claim 1 or 4, is characterized in that: described heating plant also comprises the electrothermal tube be evenly located between furnace wall and flue from top to bottom.
6. a kind of green tea vacuum and low temperature drying unit according to claim 1, is characterized in that: described furnace wall is insulation furnace wall, filling with insulation material in this insulation furnace wall.
7. a kind of green tea vacuum and low temperature drying unit according to claim 1, it is characterized in that: described bed of material comprises base plate, this base plate surrounding is provided with striker plate, and the striker plate of push-and-pull bed of material is provided with handle.
8. a kind of green tea vacuum and low temperature drying unit according to claim 7, is characterized in that: described base plate is the meshed base plate of tool.
9. a kind of green tea vacuum and low temperature drying unit according to claim 7, is characterized in that: below described base plate, one group of edge is respectively provided with one group of roller, is provided with the guide rail rolled for roller in flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625193.4A CN105124021A (en) | 2015-09-28 | 2015-09-28 | Green tea vacuum low temperature drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625193.4A CN105124021A (en) | 2015-09-28 | 2015-09-28 | Green tea vacuum low temperature drying device |
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| Publication Number | Publication Date |
|---|---|
| CN105124021A true CN105124021A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510625193.4A Pending CN105124021A (en) | 2015-09-28 | 2015-09-28 | Green tea vacuum low temperature drying device |
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| CN (1) | CN105124021A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484411A (en) * | 2020-11-26 | 2021-03-12 | 安徽池杨茶业有限公司 | Novel tea leaf drying machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005121301A (en) * | 2003-10-17 | 2005-05-12 | Fuji Heavy Ind Ltd | Waste dryer |
| CN201141722Y (en) * | 2007-11-27 | 2008-10-29 | 河南黄河实业集团股份有限公司 | Drawer type electric heating vacuum drier |
| CN202281468U (en) * | 2011-11-03 | 2012-06-20 | 成都恒瑞制药有限公司 | Square vacuum drier |
| CN102865723A (en) * | 2011-07-07 | 2013-01-09 | 江苏申久化纤有限公司 | Vacuum drying device and drying method |
| CN204404704U (en) * | 2015-01-14 | 2015-06-17 | 天津市华帅制药机械有限公司 | For the drying cabinet device of Chinese medicine drying |
-
2015
- 2015-09-28 CN CN201510625193.4A patent/CN105124021A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005121301A (en) * | 2003-10-17 | 2005-05-12 | Fuji Heavy Ind Ltd | Waste dryer |
| CN201141722Y (en) * | 2007-11-27 | 2008-10-29 | 河南黄河实业集团股份有限公司 | Drawer type electric heating vacuum drier |
| CN102865723A (en) * | 2011-07-07 | 2013-01-09 | 江苏申久化纤有限公司 | Vacuum drying device and drying method |
| CN202281468U (en) * | 2011-11-03 | 2012-06-20 | 成都恒瑞制药有限公司 | Square vacuum drier |
| CN204404704U (en) * | 2015-01-14 | 2015-06-17 | 天津市华帅制药机械有限公司 | For the drying cabinet device of Chinese medicine drying |
Non-Patent Citations (1)
| Title |
|---|
| 刘晓东等: "低温真空干燥方法对名优绿茶色泽的影响", 《广东农业科学》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484411A (en) * | 2020-11-26 | 2021-03-12 | 安徽池杨茶业有限公司 | Novel tea leaf drying machine |
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Application publication date: 20151209 |
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