The problem of the stability of vitamins in feed is a problem worthy of attention for feed companies. Vitamins play an important role in promoting animal growth, improving reproductive performance, enhancing immunity and stress. However, vitamins, as a class of low molecular weight organic compounds, are affected by various factors such as temperature, redox, light, heat, pH, moisture and trace element interactions. These factors all lead to changes in the structure of the vitamin active group, while destroying the activity of reducing vitamins.
In the feed premix, the redox reaction caused by trace element catalysis is one of the important factors affecting the stability of vitamins. It is generally believed that Cu2+, Zn2+ and Fe2+ have a great influence on the activity of vitamins, especially in the presence of water and fat, and the mechanism of destruction may be related to the catalytic activity of these elements and their chain reaction. Different forms of trace elements (inorganic salts, novel inorganic basic salts, organic acid salts, amino acid chelate salts) have different abilities to oxidize or reduce vitamins. Among them, inorganic sulfate is easy to absorb moisture, has high solubility in water, metal ions are more easily dissociated, and it is catalytically reacted with vitamins, so it is more destructive to vitamins. At present, in view of the shortcomings of inorganic trace elements in production, manufacturers have developed various physical and chemical properties to be stable, safe and environmentally friendly in order to improve the biological utilization of trace elements and reduce the damage to vitamins in feed storage. Highly efficient new trace elements (such as basic salts, amino acid chelate salts). Studies have shown that these new trace elements have a significant effect on improving their physical properties and reducing the loss of vitamins.
Telescopic
steel cover (Telescopic steel shield)has
advantages of good sealing, can prevent iron filings and the coolant fluid. Product
is durable, smooth operation, low noise. It has beautiful appearance. It can
bring perfect appearance to the machine tool factory. Shields and machine tool are indispensable partners.
Our Telescopic Steel Cover (telescopic steel shields)can meet the requirements of modern machine tools for high-tech, correct installation position, and high working speed, etc.
When the running speed is below 15m/min,the working method of the cover is in turn, sliding between the box body. When running at high speed, shield driven by different ways are needed to ensure that each box to synchronous operation and eliminate the jostling between each other.
Telescopic Steel Covers (telescopic steel shields)are not simple products to manufacture. They require high-quality materials and components, as well as sophisticated manufacture technologies. High movement speeds call for continuous innovation.
Special anti-friction brass guides or wipers with polyurethane rubber are inserted on the sides of Telescopic Steel Covers(telescopic steel shields), at the discretion of the engineer based on speed, seal and dimensions.
The steel used is extremely high quality in terms of flatness, corrosion resistance and wear resistance. Thickness Steel Covers may also be made of stainless steel.
For high speeds or weights, special bearings are inserted for smooth, silent movement. Telescopic Steel Covers (telescopic steel shields)with bearings require tempered or auxiliary guides.
Compact, low-speed Telescopic Steel Covers (telescopic steel shields)are equipped with special anti-friction brass or non-metallic guides.
Wipers keep the surface clean and prevent chips and shavings from getting onto expensive rails. They must be heat and coolant resistant, and thus are made of polyurethane, with or without a protective stainless steel chip guard.
For high speeds, shock absorbers are inserted in these positions. They are very effective in reducing impact between boxes during movement. There shock absorbers allow working speeds considerably higher than those previously possible, while simultaneously reducing noise levels and wear. This innovation, together with precision production methods, makes it possible to accommodate even the fastest machine tools.
For heavy covers:
1) Over 110kg for horizontal covers
2) Over 70kg for front or vertical covers.
Special supports are included for easy, secure lifting.
Telescopic Steel Cover
Telescopic Steel Covers,Stainless Steel Covers,Accordion Shield Cover,Telescopic Round Shield Cover,Machine Shields
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