CN103320214B - Low-temperature camellia seed oil cold-pressing process - Google Patents
Low-temperature camellia seed oil cold-pressing process Download PDFInfo
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Abstract
The invention relates to a low-temperature camellia seed oil cold-pressing process. The process comprises the main steps: warehousing and checking camellia seeds, cleaning and removing impurities, drying and controlling moisture, vibrating and discharging, warming the seeds and shelling, buffering and temporarily storing, pressing, settling and filtering. The process is characterized in that 1, the moisture is controlled, and the steps of flat-plate drying, storage bin ventilating, steam hot-blast stove moisture drying and cooling and storing are combined; 2, seed warming and shelling are carried out; 3, buffering and temporary storing are carried out, the seeds drop from the storage tank by vibrating during pressing; and 4,pre-pressing and pre-squeezing are carried out. The process is high in mechanical automation degree, the camellia seeds in different moisture contents can be dried and subjected to quality guarantee, and packaging and pouring after drying are not required when the seeds are stored for a long time after drying or are continuously squeezed after drying. Meanwhile, the problem that the kernel rate in the shells is extremely high after shelling is solved, the quality in the total process is well controlled, the process is simple and convenient to operate, and the oil extraction rate and the camellia seed oil quality are improved. The manual packaging and discharging cost is saved by 40 RMB for each ton of camellia seeds. The yield of the camellia seed oil in a two-screw unit is increased from the original 15 tons per day to over 30 tons per day, and the residual oil is reduced from the original 10-12 percent to 7-9 percent.
Description
Technical field
The present invention relates to camellia seed oil low-temperature cold pressing technique.
Background technology
Camellia seed oil is the high-grade edible grease processing from the seed tea seed of Theaceae vegetables oil tea tree.Conventional oil-tea camellia seed hot moulding technique makes the oil of squeezing contain a large amount of low molecule Carbonyl compounds, thermopolymerization compound, carcinogenic substance benzo (a) pyrene, pigment because benevolence shell steams to fry through high temperature high-moisture, with peel off modified rear tea seed compared with the duplex low-temperature cold pressing, squeezing crude quality is poor.In recent years, rapidly, low-temperature cold-squeezing reaches its maturity in camellia seed oil processing development.But the preconditioning technique equipment of tea seed before low-temperature cold pressing cuts both ways, and mostly can not meet the needs of large scale continuous prod, can not meet timely purchase, dry in time, the needs of cooling, timely storage in time, can not meet the needs that modified requirement and flow equalization enter to squeeze before duplex low-temperature cold pressing.Retrieve Chinese Patent Literatures, patent No. ZL200610031452.1 discloses a kind of physical low-temperature cold-squeezing process for tea-seed oil, and this process using is dried, broken shell, low-temperature storage after-ripening, select seed, the separation of clearing up, peel off, roll embryo, cold press, multi-filtering, adsorption bleaching and make processed oil.This processing method is simple and easy to do, and expressing process is not lost the fragrance of nutritive ingredient, active substance and the tea oil in oil itself; Refining process does not produce secondary pollution; Camellia seed oil quality is better than GB11765-2003 one-level pressed tea seed oil standard.But the drying process of this technique has only adopted and has dried, ted the ladle-to-ladle workload of dress bag large, labour cost is high, and drying is not killed the cooling storage temperature adjustment of enzyme sterilizing, when long storage time dhdps enzyme and microbial process can cause become sour rotten, unstable without the modifier treatment of moisture temperature and balancing flow control oil yield before cold press.Production cost and yield rate are all undesirable.The Hu Jianhua of Wuhan University of Technology, the people such as how to conquer east are published in " Chinese oil " 2009vol.34No.1pg16's " pure natural tea-seed oil is produced in shelling cold press " literary composition, and shelling cold-squeezing is elaborated.Store up when often different with processing and carry out due to tea seed, often causing that tea seed goes mouldy while storage becomes sour rottenly, and article has also proposed selected tea seed, and safety is stored up the importance to guaranteeing to process high quality oils tea-seed oil.In low-temperature cold pressing process, there is following problem in tea seed:
1. high-moisture tea seed particle is larger, and short time high temperature heating can destroy the activeconstituents of tea seed, and low-temperature heat need to be equipped with larger heat transfer area while oven dry.Although and dry material quality favourablely, be subject to the restriction of weather, wet weather can not dry in time and be easy to go mouldy continuously, needs threshing ground area large, repeatedly teds dress bag human cost large, is unfavorable for the large production of mass-producing.
2. after tea seed heating, drying, if not just dress bag or stacking of effective cooling can cause that tea seed is cold outside and hot inside, moisture content heat energy continues to distribute to crust, easily causes heating moldy metamorphism phenomenon.
3. after drying, directly dress bag is stacked, manually blanking again before squeezing, and many dress bags together-pile bag-ladle-to-ladle process, cause the increase of human cost.
4. tea seed siccative normal temperature is peeled off, and because camellia seed kernel is hard frangible, easily causes rate of kernel in hull too high.
On separate unit duplex cold pressing expeller storaging bucket volume can not play buffering stablize into squeezing needs.When storaging bucket charging is greater than crusher feeding capacity, can cause the frequent flash of storaging bucket, make former process be forced to anxious stopping, make to dry the modified effect of peeling off very unstable; Otherwise the too little meeting of feed causes often empty material of storaging bucket, makes duplex crusher fracture fall to press, and affects oil yield.
Summary of the invention
The object of this invention is to provide a kind of camellia seed oil low-temperature cold pressing technique, solve large quantities of processing problems of storing up high-moisture tea seed, solving uneven traffic affects the effect of peeling off, enters to squeeze temperature, enters to squeeze the stable problem of moisture and inlet amount, improves quality and the yield of cold press crude oil.
Technical scheme of the present invention is: camellia seed oil low-temperature cold pressing technique, comprise tea seed ware-house-in inspection, and cleaning impurity elimination, dries, and Vibrated baiting, warm seed are peeled off, squeezing, sedimentation are filtered, and have also adopted following technique and control method in low-temperature cold pressing process:
A, regulation and control moisture;
Each storage bin volume that tea seed after cleaning impurity elimination enters is 15 ~ 20m3, and material stock height, below 5 meters, is avoided, because the high tea seed of bed of material high-moisture flattens caking, affecting ventilated; The import and export of each feed bin are connected with horizontal scraper conveyor; The cold and hot vent-pipe through the processing of steam heat wind furnace is inserted at each feed bin cone end, and the ventilation hole of vent-pipe is opened below feed bin; At 12% logical hot-air seasoning when above, adopt the heating of steam heat wind furnace through chemical examination moisture content, avoid the pollution of flue dust to tea seed; Tea seed to water content 9 ~ 12%, changes the cooling drying of blowing a cold wind over to water content 7% ~ 9% through hot-air seasoning;
B, warm seed are peeled off;
Regulate and control the tea seed after moisture, before peeling off, heated tea seed to 40 ~ 50 ℃ with plate dryer, then use the broken shell of stone roller formula peeler part; Rate of hull in kernel, between 10 ~ 30%, contains benevolence below 0.5% in shell;
C, buffering are kept in;
After the tea seed that the tea seed that the warm seed of part is peeled off is not peeled off with warm seed mixes, enter the temporary tank of buffering, regulate the blanking plate of temporary pot bottom, control tea seed blanking flow, guarantee that feeding hopper material level is relatively constant;
D, precompressed are squeezed in advance;
Utilize two forced feed helical feed augers to carry out precompressed to tea seed and squeeze in advance, 90% just oil expression is discharged in first segment pressing screw end draining hole and first and second joint pressing screw gap; Oil outlet temperature, lower than 60 ℃, goes out cake temperature and is less than 100 ℃.
Positively effect of the present invention is: the present invention is owing to adopting dull and stereotyped dry and storage bin ventilates, steam hot wind bake oven solid carbon dioxide divides with cooling storage and combines, vibrations blanking, and warm seed pre-squeezing of peeling off, keeps in the methods such as tank buffer feeding.Can dry guarantees the quality processes the tea seed of different water cut, no matter dries rear long-time storage or dry rear squeezing continuously to produce, all ladle-to-ladle without drying rear dress bag; Solved in the operation shell of peeling off containing the higher problem of benevolence simultaneously, can be according to oil length and the moisture of tea seed before entering to squeeze, stably adjust flexibly rate of hull in kernel and inlet amount, full technological process quality is better controlled, mechanical automation degree is high, adaptability and continuous throughput are strong, simple to operation, have improved production efficiency, oil yield and tea oil quality.Guaranteed to enter to squeeze the accurate control of moisture, tea seed per ton is saved 40 yuan of people's frock bag blanking expenses.Improve operation rate, duplex single machine yield was brought up to more than 30 tons by 15 tons of original every days, and cake Residual oil reduces to 7～9% by original 10～12%.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Camellia seed oil low-temperature cold pressing technique, master operation is tea seed ware-house-in inspection, and cleaning impurity elimination is dried and is controlled moisture, and that Vibrated baiting, warm seed are peeled off, cushioned is temporary, squeezing, sedimentation are filtered.Innovation one of the present invention is regulation and control moisture, the 2nd, and warm seed is peeled off; The 3rd, buffering is temporary, when squeezing, shakes blanking from storage tank, and the 4th, precompressed is squeezed in advance; Specific operation process is as follows:
1. ware-house-in inspection (2)
Tea seed (1) the warehouse-in index of large quantities of purchases is, dry seed oil length 24%～40%, moisture 6% ~ 20%, impurity < 3%, mould variability < 2%, acid value < 2mg/g, could putting in storage of qualified, a point heap stows in block and carries out quality identification; Do not reach warehouse-in and require to reject (3).
2. cleaning impurity elimination (4)
When pre-treatment, according to the high first processing principle of moisture, tea seed cleaning impurity elimination is with magnetic separator magnetic separation, vibratory screening, proportion de-stone, wind-force dedusting.
3. tentatively dry (5)
Dry most of moisture with plate dryer, more than 70 ℃ temperature is dried 20～40 minutes.
4. regulation and control moisture
Tea seed enters each Storage Silo, and each feed bin volume is 15 ~ 20m3, and material stock height, below 5 meters, is avoided, because the high hot tea seed of bed of material high-moisture flattens caking, affecting ventilating permeability effect.Each feed bin is imported and exported with horizontal scraper conveyor series connection.Insert the cold and hot vent-pipe of processing through steam heat wind furnace (8) and regulate moisture temperature at each feed bin cone end, and the ventilation hole of vent-pipe is opened below feed bin.After chemical examination moisture, determine whether to continue logical hot-air seasoning, water ratio >12% leads to hot-air seasoning, adopts steam heat wind furnace (8) heating, avoids the pollution of flue dust to tea seed.
5. cooling
Tea seed is through hot-air seasoning after water ratio 9% ~ 12% (7), and changing blows a cold wind over drains continuing to be dispersed into surperficial moisture in tea seed.Cold wind cooling drying is to room temperature, and water ratio is 7% ~ 9% (9).
6. Vibrated baiting (10)
At bin bottom, a vibrating motor is installed, tea seed is balanced blanking under the control of adjustable blanking plate, ensures that the supply of next procedure tea seed is stable.
7. warm seed peel off (11)
Before peeling off, with plate dryer, tea seed is heated to 40 ~ 50 ℃, then adopts the broken shell of stone roller formula peeler part, after heating, soft camellia seed kernel has guaranteed to peel off in benevolence containing shell 10 ~ 30%, in shell containing benevolence below 0.5%.
8. buffering temporary (12)
The squeezing gun pressure power of double spiral squeezer is higher, and tea seed is through the front warm seed (30 ~ 40 ℃) of squeezing, and plasticity-is better, does not need fragmentation to roll embryo and just can enter to squeeze.Before entering to squeeze, tea seed enters the temporary tank of buffering of a 3m3, can alleviate the too small deficiency of feeding hopper on purchased double spiral squeezer.After mixing, the tea seed that the tea seed of peeling off through the warm seed of part is not peeled off with warm seed enters the temporary tank of buffering of 3m3; regulate the balanced blanking plate of temporary tank below; control tea seed blanking flow; guarantee that feeding hopper material level is relatively constant, reduce and affect technological effect because of former process startup-shutdown frequent operation.
9. squeezing (13)
Tea seed after warm seed slightly just can be fuel-displaced through extruding, and two forced feed helical feed augers of this technology utilization, can carry out precompressed to tea seed and squeeze in advance, and 90% just oil expression is discharged in first segment pressing screw end draining hole and first and second joint pressing screw gap.A large amount of oil outlet temperatures, lower than 60 ℃, go out cake temperature and are less than 100 ℃, realize the low temperature pressing of real meaning.
10. (14) are filtered in sedimentation
Squeezing crude oil is after three natural subsidence of clear oil sump, then through filter, filtration obtains the less crude oil of impurity, is convenient to storage, the reprocessing of crude oil.
Claims (1)
1. a camellia seed oil low-temperature cold pressing technique, comprises tea seed ware-house-in inspection, and cleaning impurity elimination, dries, Vibrated baiting, peel off, squeezing, sedimentation filter, it is characterized in that: low-temperature cold pressing process has also adopted following technique and control method:
A, regulation and control moisture;
Each storage bin volume that tea seed after cleaning impurity elimination enters is 15～20m
3, material stock height, below 5 meters, is avoided, because the high tea seed of bed of material high-moisture flattens caking, affecting ventilated; The import and export of each feed bin are connected with horizontal scraper conveyor; The cold and hot vent-pipe through the processing of steam heat wind furnace is inserted at each feed bin cone end, and the ventilation hole of vent-pipe is opened below feed bin; At 12% logical hot-air seasoning when above, adopt the heating of steam heat wind furnace through chemical examination moisture content, avoid the pollution of flue dust to tea seed; Tea seed to water content 9～12%, changes the cooling drying of blowing a cold wind over to water content 7%～9% through hot-air seasoning;
B, warm seed are peeled off; Regulate and control the tea seed after moisture, before peeling off, heated tea seed to 40～50 ℃ with plate dryer, then use the broken shell of stone roller formula peeler part; Rate of hull in kernel, between 10～30%, contains benevolence below 0.5% in shell;
C, buffering are kept in; After the tea seed that the tea seed that the warm seed of part is peeled off is not peeled off with warm seed mixes, enter the temporary tank of buffering, regulate the blanking plate of temporary pot bottom, control tea seed blanking flow, guarantee that feeding hopper material level is relatively constant;
D, precompressed are squeezed in advance; Utilize two forced feed helical feed augers to carry out precompressed to tea seed and squeeze in advance, 90% just oil expression is discharged in first segment pressing screw end draining hole and first and second joint pressing screw gap; Oil outlet temperature, lower than 60 ℃, goes out cake temperature and is less than 100 ℃.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103537426B (en) * | 2013-09-30 | 2016-06-29 | 宁国市沙埠粮油加工厂 | A kind of Semen Brassicae campestris screening plant and Semen Brassicae campestris method for sieving |
| CN103497827A (en) * | 2013-10-15 | 2014-01-08 | 孙梅 | Technology method for rapid unshelling of oil-tea camellia |
| CN105331440A (en) * | 2015-10-22 | 2016-02-17 | 孙高雷 | Squeezing method for peanut oil |
| CN109233996A (en) * | 2017-07-11 | 2019-01-18 | 江西兴国嘉香乐食品有限公司 | A kind of production technology of herb mixtures tea oil |
| CN107216944B (en) * | 2017-08-01 | 2023-07-07 | 福建胜华农业科技发展有限公司 | Tea oil low-temperature squeezer and squeezing method thereof |
| CN107890918B (en) * | 2017-11-17 | 2019-04-30 | 重庆江源油橄榄开发有限公司 | A kind of method of press oil from olives |
| CN108865408A (en) * | 2018-07-03 | 2018-11-23 | 太仓市宝马油脂设备有限公司 | A kind of original odor type tea-seed oil production technology |
| CN110819441B (en) * | 2018-08-08 | 2023-05-30 | 马会峰 | Processing technology for physically squeezing oil |
| CN111169941A (en) * | 2020-01-19 | 2020-05-19 | 江苏中烟工业有限责任公司 | Quantitative pipe flow control method based on different material height conversion rates |
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| CN102952626A (en) * | 2012-11-06 | 2013-03-06 | 安徽新世界绿洲茶油有限公司 | Preparation process of cold-pressed tea seed oil |
| CN102960833A (en) * | 2012-12-18 | 2013-03-13 | 湖南农业大学 | Camellia seed huller |
| CN103173278A (en) * | 2013-04-18 | 2013-06-26 | 安徽亿宏生物科技有限公司 | Full-automatic squeezing method of camellia oil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103013651B (en) * | 2013-01-10 | 2014-09-17 | 南京财经大学 | Method for producing low-temperature cold-pressed and refined tea seed oil |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102326631A (en) * | 2010-07-13 | 2012-01-25 | 湖北黄袍山绿色产品有限公司 | Process for cold pressing tea seeds to produce oil |
| CN102952626A (en) * | 2012-11-06 | 2013-03-06 | 安徽新世界绿洲茶油有限公司 | Preparation process of cold-pressed tea seed oil |
| CN102960833A (en) * | 2012-12-18 | 2013-03-13 | 湖南农业大学 | Camellia seed huller |
| CN103173278A (en) * | 2013-04-18 | 2013-06-26 | 安徽亿宏生物科技有限公司 | Full-automatic squeezing method of camellia oil |
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