In order to make the tea growers become familiar with and master the frying technology of the plate type Longjing tea frying machine as soon as possible, improve the tea frying quality, and achieve safe operation, combined with our many trial production experience, we specially compile the machine process flow and safety operation specification for The vast number of tea farmers reference.
First, the plate type Longjing frying machine operating specifications and process flow:
1. Fresh leaf spread: The fresh leaf spread is the same as the manual frying. Generally spread on bamboo equipment, thickness 2-3cm, evenly spread 6-8 hours until the fresh leaves can be weak.
2. Preparation for frying: The new tea machine pot is cleaned with detergent and rinsed with water. Good grounding and smooth placement. Then turn on the power to warm up (the odor produced when the electric heater is warmed up is a normal phenomenon). Charcoal machine should first ignite charcoal preheating (carbon should be placed evenly, so that the pot chamber heat evenly).
3. Casserole: Start temperature is generally 250260 °C (depending on the tea machine and the leaves may be). When the actual pot temperature rises to the set temperature, rub the oil for tea making in the pot and wiping it with a rag; then evenly put the tea, generally high-grade green leaves 250300g / pot, mid-range green leaves 300350g / pot, and then turn on the fry; During the period of gradual pressure, generally every half minute plus, the degree of pressure mainly depends on the fried plate (in order to bring up the tea, but also does not make the tea agglomerate is appropriate, not a one-time increase in pressure), the pot temperature should be high after the first low and depending on the tea Timely adjustment (the temperature is generally divided into three sections: the first stage of the pot temperature from the green leaves to wok to the tea is soft, usually about 1.5 minutes; the second stage is lower than the first stage 2030 °C, to the tea leaves; the third stage temperature Generally around 200 °C, this time is an important time for flattening, generally heated frying.) In order to improve the flatness, the tea leaves are basically stripped and loosened after 45 minutes of fixing, that is, when the third stage is added, the action of "grinding" is increased. Look at the choice of tea between modes "1" and "2" until the tea leaves are flat and the water content stops at 3040%. Green pot is usually about 7 minutes.
4. Renewed cool: The green pot leaves cool, and they gather for 12 hours. After being picked, you can pot.
5 pot: general pot temperature control in the 150160 °C or so (if the bake pot is too moist, the pot can be appropriate to increase the temperature and then reduce the temperature); evenly put into the pot about 300g, and then turn on the tea to stir fry for 1 minute, When the tea leaves are soft, pressurize appropriately; when the method of collapse is used, the degree of pressurization is gradually adjusted. Generally, there is a slight difference between the positions indicated in 3.54.2; when the tea is fried for 23 minutes, the “grinding†action is increased. It is recommended to adjust between modes “2†and “3â€, and adjust the temperature in due course; stir fry the tea when the tea is 8-9% dry and perform manual assistance.
Second, the safety operation specification:
1. Before using the new machine, it is necessary to read the instruction manual in detail; to check whether the screws, nuts, etc. are loose in each part; whether the lubrication parts are added in accordance with the instructions at the right time; whether the welding part is welded firmly.
2. The ground on the four feet of the tea machine must be flat and the body must not be tilted; the tea machine must be placed in a ventilated brick-concrete structure in the house. It is strictly prohibited to place it in a flammable and explosive house.
3. Considering the large amount of electricity consumed by the tea makers, a qualified electrician must have a special line installation on the tea maker wires. A special sheath wire (with a cross-sectional area of ​​4 mm2 or more) is generally used for the installed wires to prevent excessive power and burn out of other wires. At the same time, a miniature circuit breaker (ie, air protector) with a rated current of 25A must be installed before the tea maker outlet.
4. The qualified electrician must install a grounding device.
5. Before operating, you must carefully check the electrical switch and leads, whether the insulation is good and whether there is leakage.
6. When the machine is in operation, check whether there is abnormal sound and abnormal heat; whether the computer board is working properly. If abnormal, stop immediately and ask professional technicians to check and eliminate.
7. It is forbidden for untrained personnel to operate the machine; it is forbidden to operate after drinking to prevent any harm to the person or property.
8. During the frying process, it is forbidden for casual personnel to walk around, to touch the electrical switch or to step on the power leads in order to prevent electric shocks; it is prohibited for casual workers to put their hands into the frying pan for picking up the tea to prevent pinching; Play next to the machine to prevent accidents.
9. Using charcoal-heated frying machines, unused charcoal should not be placed next to the machine to prevent the charcoal from burning.
10. After the frying tea is over, you must cut off the power (and remove the charcoal) and check that the wires are in good condition; Lubricate all lubrication points.
11. Keep frying equipment not in use temporarily in a cool, ventilated, dry room. All parts that are in direct contact with the ground should be covered with wood to prevent rust.
12. For frying machines heated with charcoal, small fire extinguishers must be provided. If a tea farmer using the machine encounters a mechanical problem or the fired tea is abnormal, please contact the Municipal Bureau of Agriculture Tea Station and the Agricultural Machinery Promotion Station in time.
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