Selection
Belt dryer uses a wide range of currently in the pharmaceutical, food, biological, chemical and other fields already have its useful. But in each area of its selection criteria are not the same, because the various fields of dry material requirements and parameters are quite different. For example: in the pharmaceutical industry (especially traditional Chinese medicine), extract viscosity is generally large, and the drying temperature of the more stringent control of the melting point to be precise (especially polysaccharide materials), vacuum control range to meet different Section of the heating temperature requirements and to have on-line automatic adjustment function and so on. In addition the detection system to try to perfect to meet the pharmaceutical GMP standards. For the food industry, the solid content of the material extract is generally relatively large (more than 65%), production requirements and product specific volume, appearance and so is the vacuum belt dryer selection criteria in the key, food-grade vacuum belt Drying machine selection process, there are two elements must not be ignored: one is the consumption of energy consumption than the unit, and the other is supporting equipment such as raw materials, pre-delivery, dry fine grinding and packaging products. As for the biological, chemical use of vacuum belt dryer due to the different forms of products, so the selection criteria is extremely complex, so be extra cautious.
The first step in choosing a vacuum belt dryer is the importance of having a small sample of dry material tested. Therefore, it is the most direct way for customers to measure the manufacturer's real capability whether the equipment supplier has the material test equipment and the experienced sample personnel. Qualified vacuum belt dryer manufacturers in the material test can be in the shortest possible time to provide customers with a include: the actual material evaporation, dynamic drying vacuum, drying temperature distribution, the amount of feeding size, the actual drying time , The actual product capacity, energy consumption per unit of consumption and other technical parameters of the report, to facilitate the selection of customers to meet the requirements of production equipment models and specifications.
The second step in choosing a vacuum belt dryer is to look at the manufacturer's design level and manufacturing capabilities. Manufacturers generally in the material test report on the basis of the customer's production targets and working conditions to provide a draft of the technical design and the design of the program in a detailed statement of the reasons. Technical design is to assess the manufacturers in the vacuum belt dryer manufacturing capacity of the extremely important part, in particular, manufacturers of equipment, key technology design, such as: vacuum system design, heating system design, correction system Design, cleaning system design and feed, the material system design. Another aspect of manufacturing capacity is to examine the actual use of the manufacturer's users. Customers can visit the site according to the list of users provided by the manufacturer. If the manufacturer does have sufficient strength, it will not reject this reasonable request from the customer, or even offer several visiting goals for customers to choose. And manufacturing capacity is limited or low level of technology companies generally difficult to do this.
The third step in selecting a vacuum belt dryer is to examine the manufacturer's actual processing capacity and production scale. At present there are series design and production capacity of enterprises up to no more than three, especially the annual output of more than 10 vacuum belt dryer (especially 6-layer dry bed above the large or very large equipment) manufacturers estimate only There are 1 ~ 2. So most of the domestic manufacturers are difficult to form a vacuum belt dryer parts of the standardization of its customers to provide product maintenance and maintenance, as well as parts, accessories, interchange there are major problems, often directly affect the user Of the production efficiency, the other due to the lack of practical experience, the mechanical structure of the equipment, the rationality of the configuration, manufacturing precision requirements, etc. can not be considered very comprehensive. The vacuum belt dryer as large, auxiliary equipment, configuration requirements, the complexity of the intermediate links and other characteristics, to keep the equipment running for a long time stability is not easy. The price of such equipment is also more expensive, the user is generally optimistic about its drying capacity and technical advantages and the use of huge amounts of money to purchase, so I hope to recover costs as soon as possible to improve the economic efficiency of enterprises. Therefore, in the procurement of equipment must choose a scale, the actual design and manufacturing experience and have a reliable after-sales service guarantee system manufacturers can rest assured, of course, such manufacturers to provide vacuum belt dryer generally slightly higher prices, but For users to use a sense of security, customers must not be coveted by the low price and may affect the overall situation.
Applications
It is suitable for dehydrated vegetables, Chinese Herbal Pieces and other materials with high moisture content, and the material temperature does not allow high-quality materials is particularly suitable; the series dryer with fast drying speed, Evaporation high strength, the advantages of good quality products. For the dehydrated cake of the paste-like material, subject to granulation or rod-like can be dried.