Model selection
The belt dryer has a wide range of applications, and now it has its application in pharmaceutical, food, biological, chemical and other fields. But in each field, the standard of selection is different, because the requirements and parameters of dry materials in different fields are quite different. For example, in the pharmaceutical industry (especially Chinese Medicine), the general viscosity of the extract is larger, and the temperature of the drying is strict, the control of the melting point is accurate (especially the multi sugar material). The control range of the vacuum degree should conform to the requirements of the heating temperature of different sections and the on-line automatic adjustment function and so on. In addition, the testing system should be improved to meet the pharmaceutical GMP standard. In the food industry, the solid content of the material is generally larger (more than 65%). The requirement of the production and the specific volume and appearance of the product are the key to the selection standard of the vacuum belt dryer. There are two elements in the selection process of the food grade vacuum belt dryer: one is the consumption ratio of unit energy consumption. The other problem is matching equipment, such as raw material pre transport, dry product crushing and packaging. As for the vacuum belt dryer used in biology and chemical industry, the standard of selection is very complicated due to the different forms of products, so we need to be cautious.

The first step in choosing a vacuum belt dryer is to have small sample tests for dry materials. This is very important. Therefore, for the equipment supplier, whether it has material testing equipment and experienced test material is the most direct way for customer to measure the true ability of the manufacturer. The manufacturer of a qualified vacuum belt dryer can provide the customer with the technical parameters such as the actual evaporation of the material, the dynamic drying vacuum, the distribution of drying temperature, the size of the feeding, the actual drying time, the actual production capacity and the consumption ratio of the single bit energy consumption in the shortest time after the material test. It is convenient for customers to select the type and specification of equipment that can meet production requirements.

The second step of choosing a vacuum belt dryer is to comprehensively inspect the manufacturer's design level and manufacturing capability. On the basis of the material test report, the manufacturer will provide a preliminary draft of the technical design in accordance with the customer's production and working conditions and make a detailed statement of the reasons for the design. The technical design scheme is a very important part of evaluating the manufacturer's manufacturing capacity in the vacuum belt dryer, especially the design of the key technology of the equipment, such as the design of the vacuum system, the design of the heating system, the design of the rectifying system, the design of the cleaning system and the design of the feeding and discharging system. Count. Another aspect of manufacturing capability is to examine the actual usage of manufacturer users. According to the list of users provided by the manufacturer, the customer is required to go to the field for field investigation. If the manufacturer does have the reasonable requirement that the customer does not refuse the customer, some can even provide more than one visit target for the customer to choose. It is generally difficult for enterprises with limited manufacturing capacity or low technology level to do this.

The third step of choosing a vacuum belt dryer is to investigate the actual processing capacity and scale of the manufacturer. At present, the domestic enterprises with a series of design and production capacity will not exceed three. In particular, there are only 1~2 manufacturers with annual output of 10 vacuum belt driers (especially large or super large equipment above 6 layers of dry bed). Therefore, most of the domestic manufacturers are difficult to form the standardized processing of the parts of the vacuum belt dryer. There are great problems in the maintenance and maintenance of the products provided to the customers, and the exchange of the parts and parts. It often directly affects the production efficiency of the users, and the equipment is mechanically due to the lack of practical experience. The structure, the rationality of configuration, and the accuracy requirement of manufacturing can not be considered very well. The vacuum belt dryer is not easy to maintain the long time stability of the equipment because of its large volume, many auxiliary equipment, high configuration requirements and complex intermediate links. The price of this kind of equipment is also very expensive, and the user is generally optimistic about its drying ability and technical advantages and use huge capital purchase, so it is hoped to recover the cost as soon as possible to improve the economic benefit of the enterprise. Therefore, when purchasing equipment, we must choose the manufacturers with the scale, the actual design and manufacture experience and the reliable after-sales service guarantee system to be assured. Of course, the vacuum belt dryer provided by such manufacturers is slightly higher in general price, but for the users, there is a sense of security in the use of the customers, and the customers must not be greedy for the greed. The low price of the moment may affect the overall situation.

Application scope
This series of dryers have the advantages of fast drying speed, high evaporation strength and good product quality. For the paste material of dehydrated cake, it can be dried after granulation or rod making.