Straw ammoniation is an effective way to develop grain-saving animal husbandry in China. After ammonia treatment, the straw has not only improved the applicability, digestibility and nutritional value, but also has significant economic benefits. In daily applications, to produce high-quality ammoniated feed, the following technical points should be noted: 1, raw material moisture control Various unstained and rotted crop straws such as straw, corn stalks, and wheat straw can be used as ammoniated raw materials, and the water content should be controlled below 13%. 2, site selection and construction (pool) Ammonium sulphate (pool) should be built near the convenient barn (better indoors), avoiding human and animal activities, and built as much as possible in places with high terrain, hard and dry soil, and leeward sun. After selecting the address, determine the volume of the ammoniation tank according to the amount of feeding, and set up a semi-underground rectangular grid (two grids) of cement tanks with a height of about 50 cm. Use it in two compartments and use one grid to store one grid. 3, liquid, decoration and sealing The most common method for ammoniation of straw is urea ammoniation. First, the ammoniated raw materials such as straw are cut into 510 cm long, according to each white. The proportion of urea is added to the ratio of kg of straw plus 45KG urea, and then the urea is formulated into a 10% solution to be sprayed on the straw. Install a layer, spray a layer, constantly flip and spray evenly, while pressing and tightening until the mouth is 3050 cm, the top is fierce cone. Finally, after covering with plastic film, use all: buck, and seal the interface between the film and the crucible with wet mud. 4, management and access to During the ammoniation, it is necessary to check the film for damage and leakage, especially to prevent the mouse from biting the film and find that the damage should be repaired in time. The ammoniation time is generally 36 weeks in spring and autumn, 23 weeks in summer and more than 8 weeks in winter. After the ammoniation is mature, it can be taken out. Take one day of feeding, spread it on a clean floor and ventilate it for 1 day before feeding. Immediately after each use, seal the 窖 (1) and avoid entering the water. The town also took out all the ammoniated straws, spread them out in the cool place after being spread out, and covered them with plastic film to prevent sun and rain, and how much to take when feeding. Stainless steel nuts are components that tightly connect mechanical equipment, and can only be connected by screws on the inside, nuts and screws of the same specification. For example, M4-0.7 nuts can only be combined with M4-0.7 screws. (In the nut, M4 means the inner diameter of the nut is about 4mm, and 0.7 means the distance between the two threads is 0.7mm. );
Although many people may have used this stainless steel round nut, they do not really realize the importance and advantages of this nut. According to the introduction of the article, you should be able to understand what kind of characteristics this nut has. When a nut needs to be used in the future, it should be considered that such a nut plays a more important role.
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The same is true for products made in the United States. For example, a 1/4-20 nut can only be combined with a 1/4-20 screw. (A 1/4 finger nut has an inner diameter of about 0.25" and 20 fingers have 20 teeth per inch. Features of Stainless Steel Round Nuts
Stainless steel nuts have the advantages of not easy to rust, anti-corrosion, thermal conductivity, and strong electrical conductivity. Another major use is injection, where it is embedded in plastic parts after heating, or injected directly from a mold.
Several technical points for making straw ammoniated feed