From a nationwide perspective, there are still many prominent contradictions in the grain drying industry in China: First, attention needs to be paid, the second is to solve the problem of product supply, and the third is to solve the problem of promotion mode and service guarantee. At present, there is a lack of planning for the development of the domestic grain dryer industry, and the total production volume of products is insufficient. There is no independent brand enterprise with core leading technologies in the industry; the number of dryers is not large; the energy consumption is high due to high drying energy consumption. The quality of dried grains is poor, especially corn, and there is a lack of drying techniques and equipment suitable for rapeseed, soybeans, and cash crops.
To master the leading technology, we must have a leading direction and we must know the direction of the goal. Although the achievements of our country's drying machinery have made great achievements, the main obstacles we face today are technical problems. If we can combine our country's actual conditions and develop a drying machine that meets the market demand, this will bring great benefits to the majority of COFCO personnel in our country. Gospel.
The development direction of grain dryer in China
First, due to the fact that grain drying machines are mostly purchased for large grain stores, farmers' associations, and grain storage stores, the primary problem with dryers is that equipment costs are low. Therefore, the machine structure should be simple and the materials used should be small. It must be balanced with the drying process parameters of the materials. The cost of the equipment cannot be reduced at the cost of reducing the drying quality and the stability of the drying process.
Second, low energy consumption is the reality of the dryer requirements, dryer R & D should take the path of resource-saving development, change a single extensive drying combination, intelligent drying. At present, the drying operation of most products in China is completed in a single drying equipment under a drying parameter, and from the drying dynamics characteristics of the materials, it can be seen that in the different drying stages of the materials, the optimal Drying parameters are different. At the same time, a drying equipment often cannot adapt to the different requirements of the moisture content and other properties of the materials in the drying equipment at different drying stages. If a single drying device and a single drying parameter are used, not only will energy and resources be wasted, but also the drying quality and yield will be affected. Therefore, we must first carry out a fundamental transformation from the drying process to change the extensive drying method.
Third, with the continuous increase in energy prices, research on drying new energy is one of the hot spots. China's biomass energy is also quite abundant. Especially in rural areas, the technology for making biogas from straw is quite mature. Now we must further improve the technical content and implement large-scale industrial production. In addition, research on biohydrogen production and biomass-based industrial diesel has also been actively carried out at home and abroad. The use of biomass fuel to provide heat for drying has broad application prospects. The use of renewable resources such as straw and rice husk as a heat source in dryers is one of the development directions.
Fourth, with the continuous improvement of people's living standards, people have put forward higher requirements for the quality of food. While the drying machine meets efficient drying, the high-quality drying of food is also one of the development directions. The selection of the dryer process, the design of the mechanism, and the choice of materials all affect the quality of the dried food.
Nowadays, the variety of dryer equipment in China is increasing, the scope of use is expanding, the level of products is rapidly increasing, and the market competitiveness is also increasing. In particular, relevant government support policies, such as subsidies for agricultural machinery, are very favorable to the development of the dryer industry in China. . In the international competition, compared with the competitors, the drying equipment manufacturers in China have the advantage of low prices. The main disadvantages are that the degree of automatic control, appearance quality, completeness of the product, and the functional combination need to be further improved. For mechanical equipment, technical performance is the last word.
There are five general body styles of Ball Valves: single body, three-piece body, split body, top entry, and welded. The difference is based on how the pieces of the valve-especially the casing that contains the ball itself-are manufactured and assembled. The valve operation is the same in each case.
In addition, there are different styles related to the bore of the ball mechanism itself.
Ball Valves in sizes up to 2 inch generally come in single piece, two or three piece designs. One piece ball valves are almost always reduced bore, are relatively inexpensive and generally are throw-away. Two piece ball valves are generally slightly reduced (or standard) bore, they can be either throw-away or repairable. The 3 piece design allows for the center part of the valve containing the ball, stem & seats to be easily removed from the pipeline. This facilitates efficient cleaning of deposited sediments, replacement of seats and gland packings, polishing out of small scratches on the ball, all this without removing the pipes from the valve body. The design concept of a three piece valve is for it to be repairable.
Ball Valves
Stainless Steel Ball Valves, Brass Ball Valves, Sanitary Ball Valves, Water Ball Valves
ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsirvalve.com