The basic knowledge of maintenance-free lead-acid battery people often say that the regular name of the maintenance-free battery is called the valve-controlled sealed lead-acid battery. Valve controlled sealed lead-acid battery from the appearance including, shell, valve cover, wiring terminals. The sealing material around the terminal is red and black (or blue) respectively to indicate the positive and negative terminals. The 12V battery is divided into 6 independent isolated cells, each cell has a positive plate group and a negative plate group connected by their own bus conductor. The plate of the lead-acid battery is like the structure of reinforced cement, which is formed by coating (or rolling) active substances on the sieve skeleton of the alloy wire: the material on the positive plate is lead dioxide (PbO), and the material on the negative plate is velvet lead (Pb). Each of the positive and negative 2.
The plates are separated by porous microfiber material (or filled with silica gel material), which adsorbs sulfuric acid (HSO) electrolyte.
This fiber material (or silica gel material) is the liquid and gas transport channel during the electrochemical reaction process, it is tightly assembled with the positive and negative plate groups to form a 2V cell. Since the plates of lead-acid batteries inevitably produce hydrogen and oxygen when they are being charged, pressure builds up in the cell when they produce too much and are not ready to melt into water. In order to ensure the normal and safe work of the battery, each single cell has its own air overflow valve, when the pressure is excessive, let the gas escape automatically. Compared with the battery tank filled with full of electrolytic liquid inside the battery, the valve controlled sealed lead-acid battery contains only a small amount of electrolyte inside, also called: the lean battery. However, due to the design of the electrolyte has a certain redundancy, and under the protection of the overflow, as long as the valve pressure be reasonable used, the water loss is minimal which is caused by the gas escape, and the valve control battery electrolyte in the life process of the basic need not supplement, so the valve control sealed lead-acid battery is also known as maintenance-free battery.
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In the midsummer season, on the two sides of the narrow and long road in Nanshe Village, Xiyan Town, Jixian County, a row of shiitake mushroom sheds are neatly arranged, forming a unique landscape painting in the countryside. In the spacious and tidy mushroom greenhouse, employees are busy picking all kinds of mushrooms.
[China Agricultural Machinery Network Industry News] Relevant data show that in the past two years, there are 27 professional markets for edible fungi in the country, distributed in 16 provinces, municipalities and autonomous regions, indicating that China has entered a period of development of edible fungi. In addition, the stocks of mushrooms in each production area have increased in different degrees, and the price has dropped by 20%-40% compared with the previous years of sales. This huge market has prompted the development of edible fungi machinery to go through a long busy period.
The first planting technology of mushroom liquid bacteria in the park
　　
The mushroom market is both for sale and sales.
The park adopts modern biotechnology, and pioneered the advanced technology of planting and planting liquid mushroom strains. On the basis of increasing the output of the original strains, the research and development of new strains will be carried out, and the production will be scientific, large-scale and intensive. The development of standardization. After more than two years of production, the edible mushrooms such as shiitake mushrooms, eryngii and ash tree flowers produced in the park have been sold to Beijing, Taiyuan and Shijiazhuang in batches, which are favored by consumers.
From the history of cutting flowers to grow mushrooms, to the modern eucalyptus mushrooms, the time span of nearly 3,000 years, planting mushrooms is a tedious manual labor. Until the cultivation of the bag of mushrooms, various machinery were gradually introduced into the mushroom production process. However, due to the long planting cycle of mushrooms, the links are numerous and complicated. Even if the model is used, it has not yet formed a full mechanization.
De-artification is the direction of industrialized mushroom production
In countries such as Japan, Taiwan, and South Korea where the foreign mushroom factories started earlier, they have not been completely artificialized.
Labor costs are an important factor in restricting the development of shiitake mushrooms, even in China, where wages are low. In order to plant mushrooms in the factory, it is necessary to continuously improve the degree of mechanization and reduce the number of human participation. Among the many links, the first thing to achieve is the stick-making process. Now there are automatic mixers, bagging machines, and tie-bar machines. It is not difficult to link these mechanical automation devices to form an automated production line. The automatic production of the bacteria rods through automatic frame, to the sterilization furnace, to the cooling room, to inoculation, the realization of automatic assembly line production should also be able to solve.
However, in the sterilizing culture stage and the mushroom management stage, it is very difficult to realize mechanization. Not only is the program complicated, but also various operations in the middle, it is difficult to form standard parameters, let the machine operate, in most cases Rely on the experience of people to judge the processing. Therefore, the factory production of shiitake mushrooms also requires a large number of employees, it is difficult to fully realize the production of intelligent standardized production lines. This kind of artificial occupation is mainly reflected in the mushrooming stage. Therefore, the current mushroom factory is mainly the factoryization of the rod-making process, so the factory concentrates on the stick, and the mushroom farmer buys the stick home to disperse and cultivate the mushroom to become a feasible. the way.
The productivity of China's edible fungus science and technology has created more productivity than ever before, and it has to be big, and the contribution of science and technology has contributed. At the same time, the development of production and the rise of processing have led to the growth of consumption, the formation of markets, and the active trade. In short, today's edible fungi in China show a prosperous picture of an increase in total volume, regional expansion, quality improvement, variety, and market buying and selling. At present, it is also a good time for the development of edible fungi in China.