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Position: Home: > Product catalog > Products > Microwave Fixation Equipment > YM-20 Continuous Tea Leaf Fixation MachineProducts
 

YM-20 Continuous Tea Leaf Fixation Machine

YM-20 Continuous Tea Leaf Fixation Machine

The production of green tea, oolong tea, all need to heat fixation treatment, passivate the activity of polyphenol oxidase, evaporate moisture content, volatile grass smells, soften the organization. Now commonly used pan-fired method to deal with fixation, a few places using steam fixation method.

1. Microwave application in tea fixation :

The production of green tea, oolong tea, all need to heat fixation treatment, passivate the activity of polyphenol oxidase, evaporate moisture content, volatile grass smells, soften the organization. Now commonly used pan-fired method to deal with fixation, a few places using steam fixation method. 

The test results show that the microwave and the traditional processing way .the tea quality is good, no obvious difference, but the short microwave fixation time(1/8 time of pan-fired) and can be continuous processing. And steam fixation, because of high steam moisture content, the outer of raw material affected by high temperature, therefore almost no weight loss of tea after fixation treatment, partial chlorophyll was destoryed,the raw material contains nutrients loss along with the condensation water,quality is not ideal.

The application of microwave fixation for the tea is the main source of heat effect. When magnetron produce microwave ,effect on tea leaves, polar molecules inside tea affected by microwave cyclical change, cyclical activities accordance with microwave.Because high microwave frequency, make tea internal molecular collision at a high speed and generate a lot of friction heat, rapidly increase the temperature of the material,

Make tea molecules inside a lot of friction heat resulting from the high speed collision rapidly raise the temperature of the material, so as to achieve rapid heating effect.

2. Microwave application in tea drying process :

General hot air drying process, material external heated, surface drying, heat transfer inwards, the direction and water diffusion direction in the opposite direction, affect the moisture to evaporate.But microwaveis an internal heating, The part of high water content heat up faster.So in the microwave drying process, water migration speed from the inner to the outer is high, drying speed is significantly faster than hot air drying.

Application of microwave drying in the drying tea has the following advantages:

1) fast drying speed ;

2) high products quality, because tea surface temperature is not too high, less chlorophyll changes, colour and lustre is green emerald green, less aroma loss;

3) Uniform drying;

4) Due to the fast evaporation speed, easy to form porous, good water complex content easy to dissolution when making tea.

3. Microwave application in tea sterilization :

Tea breeds insects easily in the shipping and storage process,also occur insects pollution phenomenon. Before commonly use fumigation insecticidal method,but have the problem of drug residues. Adopts microwave sterilization treatment can obtain good insecticidal effect,insects insecticidal effect in tea is closely related to the dielectric properties of insect body, while tea moisture content is less than 12%, can strengthen insecticidal effect.

 

Tea is easily affected with damp mildew in the storage process and debase its quality.

Through the trials show that microwave technology has excellent effect  of killing tea mold.

4. Technical Parameters of Microwave Machine:

Model

Rated input power(KVA)

Microwave output power(KW)

Expected dehydration(kg/h)

Expected sterilization capacity(kg/h)

Size L*W*H(mm)

YM-10

14

10

8~10

50~80

5850*820*1750

YM-12

16

12

10~12

60~120

7200*860*2050

YM-15

21

15

12~15

80~150

8300*860*2050

YM-20

28

20

16~20

100~160

9400*860*2050

YM-25

36

25

20~25

180~200

10500*860*2050

YM-30

42

30

25~30

150~220

10500*1440*1750

YM-40

56

40

35~40

250~300

10500*1440*1750

YM-50

70

50

45~50

360~450

11600*1440*1750

YM-60

84

60

55~60

500~600

12700*1440*1750

YM-70

98

70

65~70

700~800

13800*1440*1750

YM-80

112

80

75~85

900~1000

14900*1600*1750

YM-100

140

100

90~105

1200~1600

15200*1660*1750

YM-120

168

120

110~120

1600~2000

17100*1660*1750

TL-150

210

150

140~160

2000~2500

20400*1750*1750

NOTE:  We can specially design the equipment according to your products’ features and special production requirements.

 
     
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