Dryfree mainly sells dehydrator, solar dryers, heat pump dryer machines and solar+heat pump dryer.

How to use a large belt type fruit and vegetable dryer

In recent years, belt type fruit and vegetable dryers have slowly become popular in the food processing industry. Especially in many large factories, strip-type fruit and vegetable dryers are running around the clock. Probably the reason for its popularity is that compared with the traditional drying method, using a dryer to dry is not only environmentally friendly and hygienic, but also the efficiency has been doubled. Since it is the purchase of the dryer, you must see the manufacturer before buying it. Today I will tell you how to buy a good quality fruit and vegetable dryer from a good manufacturer.


1. The purchase of fruit and vegetable dryers

At present, there are many types of fruit and vegetable dryers on the market. Because different materials have different requirements for the drying effect, you must be careful when choosing a dryer. The price and model of the fruit and vegetable dryer are determined by various aspects such as material, effective drying area, performance and heat source form. There is no uniform standard for the price of dryers on the market, and most manufacturers set prices after accounting for production costs. Due to the different materials and performance of different types of dryers, their prices are also uneven. When choosing a fruit and vegetable dryer, attention should be paid to the structure and quality of the dryer.

2. The correct use of fruit and vegetable dryers

The fruit and vegetable dryer uses a fully automatic method to dry fruits and vegetables. Proper use of fruit and vegetable dryer can not only improve its drying efficiency, but also reduce its damage to itself.

2.1 Material selection, cleaning

Choose fruits and vegetables with rich meat quality, and strictly select the best ones before drying to eliminate the bad, and remove the diseases, insects, decay, over-mature or under-mature. In addition to melon seeds and seeds, other types of fruits and vegetables can be washed clean with water, and then placed in a cool place to dry, but not in the sun.

2.2 Cutting, blanching

When the cleaned fruits and vegetables are cut into slices, strands, strips and other shapes according to the requirements, the types of fruits and vegetables are different. They are boiled in boiling water that is easy to boil, and boiled in boiling water that is not easy to cook. Leaf vegetables should not be blanched.

2.3 Cooling, draining


The fruits and vegetables after pre-cooking treatment should be immediately cooled (usually using cold water shower), so that it quickly drops to normal temperature. After cooling, in order to shorten the drying time, you can use a centrifuge to throw water, or you can use a simple technique to press and drain. After the water is drained, you can spread it out and dry it for baking.

2.4 Drying

Different drying temperature, drying time, drying mo


isture content and drying process should be selected according to different types of fruits and vegetables. During drying, the cold air passes through the heat exchanger and heats the air in the drying room through heat conduction, heat radiation and heat convection. Under the action of the blower, the hot air is completely dispersed in the drying room, and the hot air and the materials are fully thermally exchanged , Under the action of the moisture exhaust fan, the water vapor is discharged out of the drying room, and then the purpose of drying is reached.

3. Adjustment of fruit and vegetable dryer



When the fruit and vegetable dryer is in use, due to the wear of the chain, belt and bearings, the tension of the chain, the tension of the belt and the clearance of the bearing will all change, so it needs to be adjusted if necessary.

3.1 Chain adjustment

The adjustment of the chain should pay attention to the loose edge of the chain and the chain crawling phenomenon. If it is too tight, it will increase the wear. When adjusting, pay attention to the fact that the loose-edged chain can be pressed by the hand. If it is pressed too hard, it means that it is too tight. On the contrary, if it can be lightly pressed with one hand, it means that it is too loose and the adjustment must be continued.

3.2 Belt adjustment

The tension of the belt must be adjusted by the tension wheel. The belt is too tight and will cause serious belt wear. If it is too loose, it is easy to slip. Generally, when the two wheelbases are about 1m, press the middle of the belt with your fingers. Make it fall vertically 10 ~ 20 mm. Adjust at any time during use.

3.3 Adjustment of bearing clearance

Proper bearing clearance is an important condition to ensure the normal operation of bearings. According to different fixing methods, there are two adjustment methods. For bearings with fixed inner ring position and adjustable outer ring, the method of increasing or decreasing bearing cover gasket should be used; for bearings with fixed outer ring and adjustable inner ring, adjusting nut method should be used.

4. Maintenance of fruit and vegetable dryers

Belt type fruit and vegetable dryers are generally used most during the harvest season of fruits and vegetables, and are used less frequently at other times, so daily management and maintenance are the key to extending their service life.

The maintenance of the strip type fruit and vegetable dryer is divided into daily maintenance and quarterly maintenance. Under normal circumstances, daily maintenance should be carried out after each drying operation. Check the safety of electrical circuits; check whether the protective parts are loose, and tighten immediately when loose; check whether the bearings are short of oil, and replenish immediately if necessary. After each drying quarter is completed, quarterly maintenance should be performed. Thoroughly remove debris and dust from the machine; completely replace the lubricating oil and grease; check the tightness of the sealing parts and replace with new ones if necessary; check the direction of the fan. For some large-scale fruit and vegetable dryers that are not used for a long time, if they need to be stored outdoors, protective measures should be taken.

Post time: Aug-21-2020