Developed the international leading level of fruit and vegetable dehydration equipment - SD circulating multi-function
Dryer, is a complete set of equipment for a variety of fruit, vegetables, aquatic products, herbs and other agricultural products dehydration. SD circulation type multi-function dryer has been widely used in the main producing areas of dehydrated vegetables such as Liaoning, Guizhou, Inner Mongolia, Ningxia and Xinjiang. It has built a number of production lines, updated the production technology and equipment, and solved the chili vegetables and peanuts. , Dehydration production enterprises with high energy consumption and improve product quality issues. The main advantages of the SD circulation type multi-function dryer are: saving coal, saving electricity, saving labor, even drying, and good product quality. The unit energy consumption is 50% lower than the traditional dryer. China is a large country of fruit and vegetable production. Since the accession to the WTO, with the continuous deepening of trade globalization, the volume of international trade has grown continuously, especially for vegetables. Since 2002, the total export volume has been ranked first in the world. However, the fruits and vegetables exported by China are mainly raw or frozen. The main reason for being able to compete in international trade is mainly due to the low cost of raw materials and obvious price advantages, but the economic added value is far behind that of fruits and vegetables that have undergone deep processing. How to increase the added value of China's agricultural products Economic information needs to improve China's agricultural products to seize the opportunity to fully integrate with the international market, and actively and effectively optimize the product structure of agricultural products, vigorously develop the intensive processing of agricultural products, and further increase foreign exchange through exports. Among them, the development of dehydrated vegetable processing industry is a promising industry in the processing of agricultural products. Dehydrated vegetables have a huge market space and a huge profit return. The current demand for dehydrated vegetables at home and abroad is increasing at a rate of 30% every year. Big, the economic value of the original vegetables compared to the same period, the value of dehydrated vegetables is ten times that of the original vegetables. However, the vast majority of domestic vegetable dehydration processing still remains in the original processing methods. No matter whether it is production and processing efficiency or product quality, it is far from being able to adapt to the rapid development of market demand, let alone participate in the competition in the international market. Looking at the processing of domestic dehydrated vegetables, hot air
Drying Equipment accounts for more than 90% of dehydrated vegetable processing equipment. At present, China's drying equipment is faced with two situations: On the one hand, the market for hot-air drying equipment for fruits and vegetables is in great demand. According to statistics of the State General Administration of Customs, in recent years, the export volume of dehydrated vegetables in China has increased at a rate of 30% each year, and the export volume of dehydrated vegetables in China has accounted for about two-thirds of the world's total output. However, the demand gap for dehydrated vegetables in domestic and foreign markets is still relatively large. According to the survey, the annual demand gap between dehydrated vegetables in the international market and the domestic market is more than 50,000 tons. Although China is the world's first vegetable producer, the dehydrated vegetable industry is still at a relatively low level of development. The most important lack of energy-efficient dewatering processing equipment that restricts the development of the dehydrated vegetable industry. Hot air drying equipment is the most widely used and most economical equipment in dehydrated vegetable processing equipment. Therefore, the market for hot air drying equipment has the largest prospects for the greatest demand. On the other hand, most of the existing drying equipment in China is backward, with high energy consumption, low processing volume and poor product quality. The existing dehydration vegetable drying equipment mainly includes a box dryer, a
Belt Dryer, and a traditional tunnel dryer. The single line has a low production volume and lacks the large-scale dewatering equipment required for large-scale production; it also has high energy consumption, low efficiency, uneven drying, and poor product quality. Take the box-type dryer as an example. The separate drying boxes in the box-type dryer rely on artificially turning vegetables to dehydrate and operate at high temperatures. The workers have great labor intensity; the quality of the dried products is very low; Dryer to produce a ton of dried vegetables consumes 6.2 tons of coal, with an average of 9251 kilojoules per kilogram of dehydrated coal (calculated as 20890 kilojoules per kilogram of coal calorific value), and an additional 921 kilograms of dry tin as a tonne of dried vegetable (box drying) The machine consumes 0.06 degrees of electricity per kg of dehydration). These conditions are mainly due to defects and deficiencies in the equipment itself. At present, these domestic drying equipments basically use pure hot air as a heat source. Traditional tunnel dryers use the co-current air supply method or the counter-current air supply method for drying. There is a common disadvantage of these air supply methods: uneven drying of materials. In the same batch of materials, the moisture content of some materials has reached the standard, and the moisture content of some materials is still excessive. At this time, if the drying is stopped, the moisture content of some materials is too high to meet the quality standards. If the drying is continued, some of the materials will be too dry, which will not only increase the drying cost, but also reduce the output and seriously change the color of the products. The main reason for uneven drying is: uneven air supply. In the same cross-section of hot air flowing in the dryer, there is a large amount of hot air flow in some locations, and the materials are dried quickly. In some areas, the flow of hot air is small and the materials are dried slowly. Irrespective of whether the air is fed downstream or countercurrent, there is a problem of uneven drying due to uneven air supply, resulting in a high cost of drying. Since the problem of uneven drying has not been solved, domestic industrial production and agricultural and sideline product drying equipment has not been able to form a production line with a relatively large production scale. The largest single production line at present is 5 tons. In response to these difficulties and priorities, how to increase production scale, reduce energy consumption, and improve product quality requires the improvement of traditional drying processing equipment. In recent years, after repeated design, testing and improvement, Changzhou Jianghe Drying Equipment Co., Ltd. has developed a highly efficient and energy-saving hot air drying equipment - SD circulation multi-function dryer. First, adopt the main air duct isobaric air supply and auxiliary air duct circulation air supply methods to solve the problem of uneven drying caused by ununiform air supply. The main air duct is designed with an equal pressure chamber to form the main air supply with equal pressure. In the system, a wind adjustment device is installed in the isobaric room, which can flexibly and easily adjust the wind direction, and initially realize uniform air supply. A secondary air duct (circulating air supply system) was designed. The secondary air duct consists of waste heat recovery device, secondary fan and air supply system. A waste heat recovery device is designed and installed in the flue of the hot blast stove to effectively recover the waste heat of the flue gas, and then the waste heat utilization auxiliary fan is sent to the circulating air supply system of the dryer to form a three-dimensional air supply in the local area of the dryer. With belt, the heat is sent to any corner of the dryer, thus achieving uniform air supply, solving the problem of uneven drying, improving the drying quality and output of the product, due to the effective use of waste heat of flue gas, greatly reducing Cost of production. The SD circulating multi-function dryer includes a main air duct, a hot air box, a main fan, a hot blast stove, a waste heat recoverer, a sub-fan, an auxiliary air duct, a chimney, a dust collector, a smoke draft fan, a drying tunnel kiln, and a roof. Pushing machine and other major components.
In the actual dehydrated vegetable processing, the SD circulation type multi-function dryer is more efficient and energy-saving than the traditional dryer, and the quality of the produced product is obviously improved, and the economic benefits created are obviously improved. The results of statistical analysis are as follows: SD cycle multi-function dryer achieves daily production capacity of 1-60 tons of raw materials; 2. The dried moisture content of the dehydrated vegetables produced is guaranteed to be below 3%; 3. Achieves 1 kilogram of dehydration energy consumption below 5000 kJ; 4. The quality of the dehydrated vegetables produced was obviously improved. The color of the finished products was basically the same as the color of the original vegetables; the smell of the original vegetables was met; the hygienic indicators conformed to the national standards; 5. The traditional production cost of the dryer decreased by more than 50% year-on-year.
