Comprehensive discussion on the development trend of grain dryer

China is the world’s largest food producer and consumer, with an annual total grain output of 500 million tons. According to statistics, China’s grain loss after grain harvesting is as high as 18 or so during threshing, drying, storage, transportation, processing, and consumption. Far exceeds the 5 standard set by the UN Food and Agriculture Organization. Among these losses, each year due to climatic reasons, cereals are too late to dry or reach safe moisture, resulting in mildew, germination, and other losses of up to 5 grains; if the annual grain yield is 500 million tons, it is equivalent to 25 million tons of grain. People eat 500g of food each day for 6.8 million people for one year. This figure is staggering and reduces the grain loss received by the hand to the lowest point. In this sense, the mechanization of grain drying is more important than the mechanization of field operations. It is an important guarantee for the high yield and harvest of grain.

1 Development Overview The research of foreign grain drying machinery started in the 1940s and basically achieved grain drying mechanization from the 1950s to the 1960s. Grain drying was automated in the 1960s and 1970s, and grain drying was efficient in the 1970s and 1980s. With high quality, energy saving, cost reduction, and computer-controlled development, grain drying equipment has achieved serialization and standardization after 90 years. In recent years, great progress has been made in computer simulation of grain drying processes. The continuous development of traditional software and special software has played an extremely important role in the design of grain drying machinery and the improvement of product quality. The development of grain drying machinery in China began with the imitation of dryers from Japan, the former Soviet Union and other foreign countries. Due to the complex structure of the grain drying machinery at that time, the high consumption of steel, and the high cost of production, it was not suitable for the economic and institutional conditions in rural areas and was used only by state-owned farms, grain stores and collective enterprises. In the late 1970s, relevant scientific research units began to develop grain dryers suitable for China's national conditions. Most of them are suitable for use by farm production companies and rural production teams; after the 1980s, China's rural economic system began to undergo reforms, and most of the dry machines developed were developed in the direction of multi-use and miniaturization; since the 1990s. With the in-depth development of rural reforms, the level of rural economy and agricultural productivity has risen relatively quickly, and professionalization and intensive management of scale have also witnessed new development. In particular, large-scale grain warehouses and seed and grain production bases of state-owned agricultural land reclamation systems gradually equiped with complete sets of grain drying equipment, and supported them with warehousing, processing, and other facilities to become the main application representatives of grain drying machinery in China; at the same time, they were also introduced. The grain drying machinery in the United States, Canada, Japan, and Taiwan and other countries and regions, some colleges and universities and related scientific research units have also developed a corresponding series of grain drying equipment to serve the domestic food system. The development of grain drying technology gradually makes the drying machinery mature and perfect, and it also accelerates the pace of agricultural modernization. Although the development of grain drying machinery in China has been a continuous exploration history for more than 30 years, there are already more than 50 production enterprises. , But the output is not large, the technical content is low, there are not many mature models, the product types are small, and the energy consumption is high, the automation level is low, and the small and medium-sized multi-functional drying machinery suitable for agricultural machinery specialized households, grain-producing large households and village groups is lacking. . There are more than 20,000 grain drying machines in the country. The mechanical drying grains account for only about 1 per cent of the country's total production each year, while the mechanical grain drying in developed countries accounts for about 95 of the total output. This shows that China's grain drying machinery has developed far. Can not adapt to the development needs of grain production.

2 Constraints and Development Opportunities Constraints in the development of grain drying machinery: First, the agricultural labor force continues to increase. Of the 1.3 billion people in the country, 800 million are in rural areas, and the vast majority of surplus labor is in rural areas. The pressure on surplus agricultural labor is huge. This will undoubtedly have an adverse effect on the growth of labor and grain drying machinery. Second, the growth of farmers' income will be slow. This will directly affect the purchasing power of farmers' agricultural machinery. Third, the import of agricultural products will increase. The decrease in exports, especially after the addition of the WTO; Fourth, the agricultural machinery support policy is not in place. At the same time, we should also clearly see the unfavorable factors in the development process of grain drying machinery: First, large investment in grain drying machinery; Second, long investment recovery cycle; Third, low level of industrialization of farmers, socialized production The organizational service system and mechanism are far from being formed. Fourth, the raw grain has a high impurity rate, uneven water content, and a high quality requirement for drying machinery. Currently. China's grain drying mechanization is facing a rare opportunity for development: First, governments at all levels attach great importance to food production. In particular, since 2004, the central government has introduced a variety of measures to increase farmers’ enthusiasm for growing grain, and has promulgated and implemented a promotion law for agricultural mechanization. The favorable policy environment such as economic support, price subsidy, and tax incentives; and second, the development of agricultural industrialization is inseparable from mechanical drying. Large grain producers, large agricultural machinery specialists, rural cooperative economic organizations, leading companies, etc., have strong desires and requirements for mechanical drying; Third, there are many kinds of drying machinery on the market, and there are practical new types of machinery and technologies available for selection and promotion. Service support; Fourth, the rapid expansion of the combine harvester and the mode of cross-regional operation, so that a large number of grains need to be dried in a timely and rapid manner; Fifth, mechanical drying can avoid losses, prevent natural disasters, prevent the site from turning over and increase the grain miscellaneous, and the grain drying Traffic safety, as well as the saving of valuable land resources, etc., The importance of developing grain drying machinery began to be widely recognized.

3 Countermeasures and Suggestions 3.1 Overall planning, clear focus, and distribution implementation 1) Accelerate the restructuring, reorganization, and transformation of grain drying machinery manufacturers. Efforts will be made to change the issues of scattered, small, weak, and poor efficiency of the industry. Leading brand-name products as a leader, forming a variety of large-scale grain drying machinery group that combines science, industry and trade, solves the problems of multiple production enterprises, small production scale, high product cost, low economic efficiency, and the concentration of grain drying machinery The degree of specialization has been greatly improved, promoting the development of domestic and foreign markets and the construction of product after-sales service systems, and the formation of a powerful enterprise technology innovation base has led to the improvement of the industry’s competitiveness in technology, quality and after-sales services. 2) Gradually improve theoretical research of grain drying technology to form a grain drying equipment system suitable for grain production in China. Formulate and improve technical standards for grain drying, standardize the design and development of grain drying machinery, lay the theoretical foundation for determining the development direction of grain drying process and develop models; research and develop grain drying automatic control system, and improve the level of mechanical control of grain drying; According to the different shapes of grains and the requirements of grain drying, the new process of grain drying is continuously explored. 3) Market-oriented, accelerate the industrialization of short-term products and the upgrading of urgently needed products, and constantly improve independent R&D and innovation capabilities. Mobilize all positive factors, speed up the construction of large-scale enterprise group technology centers, give play to the role of industry service productivity centers and engineering technology centers, optimize the development and innovation system of reconstructed production, research, and research grain drying machinery to solve existing grains The lack of types of drying machinery products, backward performance, lack of doors and stalls, and low technical content cannot meet the requirements of agricultural production and rural economic development. 4) Seriously implement the policy. The relevant government departments must conscientiously implement the policies and measures of the central government, increase the strength of mechanized drying demonstration and promotion through project approval, price subsidies, and integration of resources, and cooperate in the division of labor and cooperation; focus on the main areas for the production of commercial grain, breeding and processing promotion areas for agricultural products, and agriculture. Comprehensive development zones, food harvest seasons and more rainy areas, areas where peasant machinery is urgently required for drying, areas where highways and grains are frequently banned, and examples are well established. A number of grain drying mechanization demonstration bases and drying centers have been set up, as far as possible with combine harvesters, The initial deep processing of grain is combined and matched to form an industrial chain. It is widely publicized through various forms such as television, newspapers and periodicals, the Internet, and on-site conferences to expand the influence, and recommend new tools with high quality and low cost to farmers; do a good job in technical training. Do a good job in after-sales service for equipment, so that the purchasers have mastered the use of business skills, with real effectiveness and quality services, to promote the conscious acceptance and active application of farmers. 3.2 Appropriate selection and development Supporting the development of medium and small-sized multi-function and multi-heat source models suitable for China's national conditions, comprehensive consideration should be given to the use of business models and cross-regional mobile operations as the direction of development, with a simple structure, low cost, high thermal efficiency, and productivity. High, with good promotion prospects. 1) Heat source mode selection. According to local energy conditions, choose as many energy dryers as possible, such as electricity, diesel, kerosene, solar energy and straw. To increase adaptability. The first three are more common, greenhouse solar drying system is close to the natural dry state, the dried food is delicious, does not pollute the food and the environment, the cost is low; but the system investment is high, affected by climate change is very large, only applies to long hours of light area. 2) Select according to function. A multi-purpose machine, in addition to drying food, but also drying such as rapeseed, Chinese herbal medicines, edible mushrooms, starch and other agricultural products, with sterilization, disinfection and other functions; dryer should have a fully automatic computer control system, water Inspection, drying speed, grain temperature, grain amount, outside temperature change, drying temperature correction, combustion temperature, scheduled shutdown, and constant moisture shut-down, etc., are completed by computer, which effectively controls grain quality, taste, explosion, and energy saving. Consumption plays an important role. 3) Capacity model selection. The size of the model is determined by the conditions and scale of agricultural production. China's farmers are scattered and small in size, and small dryers are more adaptable. They can develop small dryers with a capacity of 2km and a capacity of 2t, which are convenient for farmers to buy; large- and medium-sized machinery with a size of over 6t is generally provided by village and township agricultural machinery service organizations. Purchase management. 3.3 Exploring and Operating Mechanisms In order to adapt to the reality of long-term implementation of the household contract production system in rural China and improve the utilization and effectiveness of mechanized drying equipment, the following business models are recommended: 1) Professional households or professional service companies. Adopting government subsidies or demonstrations to develop specialized drying households and professional joint households, focusing on the promotion of small-scale multi-functional mobile dryers, gradually forming professional agricultural machinery service companies, and supporting cross-regional operations with the combine harvesters to conduct socialization and professionalization. Serialization and standardization services are effective ways to realize mechanization under the double-level management system. This mode is flexible. If you want to go to the village lane, when you dry, you can select a family grain or other economic crops after the election, determine the moisture content and quality, then focus on drying, drying and distribution to each household. 2) Establish a grain cooperation bank for production areas in accordance with the basic requirements of cooperation, mutual assistance, agency substitution, and market operation. Use storage facilities of the grain department or base facilities of agricultural (machine) service centers to purchase large and medium-sized drying and storage equipment and sign grain savings contracts with farmers. After the moisture content and weight of the wet grain of the farmers are collected, they are unified and baked. Dry, sub-variety storage. The farmers are responsible for the dry and storage management fees. Farmers use food grain receipts at any time to withdraw food certificates. When they need to use money, they can also withdraw cash at the contract or market price. In this way, it can not only improve the utilization rate of dry storage equipment, but also can effectively avoid the loss of drying and storage of separate households, and relieve farmers of their worries. 3) Establish a grain drying processing sales center. Through the establishment of new-type agricultural cooperatives or professional cooperative management organizations based on complete voluntary mutual benefits, agricultural cooperatives will establish one or more grain drying processing and sales points to form an integrated production and sales center. Based on the principle of commodity exchange, based on the basic aim of making members or members profitable, in the cooperative, the production link is a one-man business, there is only quality competition between each other, there is no price competition; pre- and post-natal services, In particular, the drying, processing, and sales links are managed by the cooperatives. The members will hand over their products to the cooperatives in accordance with the promises of the people's meeting. Mechanized screening, grading, drying, processing, packaging and sales will be carried out according to uniform standards. Cooperative members Share the various costs of the processing process together, and then share the profits together according to the sales situation of each person, and share the profits if they lose. This form can effectively improve the farmers' ability to resist market risks and achieve maximum benefit.

Flexible Gate

Flexible lift gate is a flexibel soft curtain door, inside and outside the two curtains , curtains used between the aluminum beams connected with a vertically movable rail , the roof beams have levels not in the same straight line and hanger large plants in particular Be applicable , Flexible lift door installation does not take up interior space in the hole inside , When the first move to open the door , and finally superimposed over the hole , Off event curtain rail first and then fall down until its is completely closed

Door body composition :

The bottom of the door curtain rail aluminum beam beam seal top drive system and transmission of electrical control systems and safety devices

Flexible door features:

1. Light weight compared with other types of the same size door , flexible door lighter weight reduces the strength of steel at the top of the doorway architecture degree requirements ,

2. Small compared with the same specification of the machine style doors 2, footprint ,flexible installation in the door after the hole is turned on internally stacked above the hole , do not take up interior space , Large Span hole may be provided a plurality of movable rail the entire door into several independent stacking doors shorten the span of a single door so that the overall thickness of the door is reduced , further reducing the footprint

3. Rational layout flexible doors with movable rail rail can set different activities based on the specific circumstances of the door into the door several sizes of uneven accumulation of doors to make the building as a whole rational layout greatly reduces the overall architecture of the space and cost

4. The wind strength between two layers of high flexible door curtain as the bottom of an aluminum beam has a wind skeleton steel structure , By adjusting the beam thickness and spacing , which can resist wind pressure of any intensity , so the door can be flexible for use in any area

5. The tensile strength of the flexible door after door curtain is double polyester fabric , high tensile wire rope equipped with ultra-high hole suitable for large machinery such as aircraft hangars and repository

6. The curtain coated with vinyl coated with a waterproof sunscreen and smoldering performance , capable of sound absorption retardant insulation mildew proof and so on

7. Safe door , Cube with anti-lock break to ensure safety in case of accidental breakage of wire rope jammed in the door quickly experience anywhere rails , Multiple protection features mechanical and electrical installation to ensure t he safety of goods passing aircraft and other vehicles and personnel , the movable rail is also equipped with anti-fall device , you can ensure reliable parked at the top of the hole after the movable rail is raised without falling , The bottom of the door is equipped with and airbag , it will immediately rebound to rise until the safety door drops open when obstacles encountered in the process , You can also install infrared protection device on the door

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SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , https://www.hongfafrud.com