How to dry fruit?

  The fruit dryer makes the fruit dried fruit for preservation. At the fruit ripening time, the fruit can’t be sold all by lots of big growers surely. Without treatment, the fruits will be rot after growing hard. So there is the emergence of fruit dryers. Dried fruit can be eaten directly or soaked in water. For example, the most commonly eaten daily are dried sweet potatoes and red dates, it has been dried by a fruit dryer. 

How to dry fruit in large quantity?

  The quality of dried fruit depends on the drying technique largely.Because the drying of fruits involves not only the removal of water, but also nutrition and quality. In order to ensure the quality of dried fruits and prevent discoloration, saccharification, carbonization and fruit cracking, the temperature should be controlled at 45-60°C, and the moisture removal method should be designed reasonably.
  Air energy heat pump dryer is a new type of dryer equipment that has been  used in recent years widely. Using air energy heat pump to dry the fruit can improve the quality of the fruit, avoid oily head, dry strips, and mildew during the natural drying process. The color is good, drying time is short, processing is not restricted by weather, processing cost is low, and efficiency is high. It solves the problems of a large number of mildew, oily ends, and dry strips caused by natural drying by fruit farmers for a long time, improves the rate of commercial fruit, and is simple to operate.

What is it the fruit drying process? 

  The process flow of fruit dryer processing is mainly divided into the following steps: picking, cleaning, peeling, pitting, cutting, pickling, placing, drying, and packaging.
1:Picking ripe and plump fruit. Under normal circumstances, ripe fruits will have a rotten taste. Therefore, it is better to choose eight-ripe fruits. 
2:Using bubble cleaning equipment to remove impurities and dust on the surface of the fruit, and then make the treatment of peeling, pitting, and cutting. 
3:According to market demand, pickle the cut fruits. 
4:Fourth, put the pickled fruit slices or fruit strips on the material tray evenly, and then send them to the drying room for drying treatment.
5:Drying processing is an important process of fruit drying, which determines the quality of the finished dried fruit. Generally, the fruit drying process is divided into four important stages: preheating, drying, ripening, and shrinking.
Warm-up: set the temperature to about 35°C for half an hour. 
Drying: Raise the temperature from 40 to 55°C, set the temperature up to 5°C each time, and the duration is different each time. It needs to be determined according to the fruit varieties and drying requirements. A small amount of moisture can be discharged in the early stage, and the amount of moisture can be increased in the later stage. The entire period is approximately 6 to 12 hours.
Ripening: Fruits have higher sugar content. This stage is also called saccharification. Because of the higher sugar content, the moisture is not easy to disperse. Therefore, the temperature needs to be increased. Set it to about 55 to 65°C for 2 to 4 hours. Pay attention to timely dehumidification.
Shrinkage: At this time, the moisture content inside the fruit is low, and the shape has tended to a stable shrinking state, but the moisture inside the whole fruit is uneven. It can be used continuously at 55°C and drying for 2 hours until the internal moisture content drops to the expected requirement. The whole drying can be completed. 
6:Pack the dried preserved fruit in time to prevent deterioration or re-moisture and ensure the drying quality.
  The above is the process flow of the fruit drying process summarized by Henan Baixin company. So only the drying process is in place, the fruit dryer can be used to dry high-quality dried fruit products. The fruit drying process provided by the Henan Baixin is for your reference only, because different fruits have different water content, the drying process will not be the same exactly.

Henan Baixin has two types of professional fruit dryer.

1:The first method:fruit heat pump dryer

Commercial 100-3000kg/h large amount of dehydration wide application and easy operation
  Heat pump drying machine use the principle of inverse Carnot cycle. It absorbs low-temperature heat energy in the air, which becomes high-temperature heat energy after efficient heat collection and integration by the heat pump system, and is transported to the drying room for cyclic heating and drying of materials.It refers to exhausting the hot and humid air in the drying room directly to the outside of the drying room through dehumidification device, and then replenishing natural fresh air.
  Hot air circle drying machine belongs to high temperature heat pump unit. Its working principle is: the working fluid of the heat pump is compressed by the compressor, becomes high temperature and high pressure gas, enters the condenser, condenses and liquefies the heat, and is used for air heating in the drying room. The moisture in the material is vaporized and evaporated by the form of hot air, and the evaporated water vapor is discharged by the moisture discharge system, thereby achieving the purpose of drying the drying material.

2:The second method:fruit continuous mesh belt drying machine

Large amount of dehydration 200-5000kg/h food fruit drying machine continuous automatic work easy operation
  Fruit dryer machine is a kind of continuous production drying equipment, the main heating way has electric heating, steam heating, hot air heating. Its main working principle is to spread the material evenly in the network. The material is moved in the dryer by the operation of the machine, and the hot air draws out the water vapor of the material. so as to achieve the purpose of drying.
The operation temperature is 40-120 degree centigrade. And the dry cycle is 1-5 hours.


 

Fruit drying video：