How to properly apply negative pressure hoses, telescopic hoses, and high temperature resistant telescopic hoses
Negative pressure hoses, telescopic hoses, and high temperature resistant telescopic hoses have been widely used in industrial production, which completely solves many problems of traditional hoses. In modern industrial production, we will often use telescopic hoses. Pipe, it replaces the traditional corrugated pipe or steel pipe made of copper-zinc alloy. High temperature resistant telescopic hose, as its name implies, is a telescopic hose that can work efficiently at high or low temperatures. It is widely used in petroleum, chemical, engineering machinery manufacturing, coal mines, shipbuilding, aviation, automobiles, medical equipment and other industries. The ideal pneumatic hose for mechanical equipment is the most ideal hose for conveying various gases and powders under negative pressure.
Telescopic hose, high temperature telescopic duct, usually a heat-resistant ventilation exhaust duct used for ventilation and exhaust. Some ducts are often seen on the market, such as '400 degree high temperature resistant air duct LKE400, 500 High temperature air duct LKE450, 600 degrees high temperature resistant telescopic air duct LKE460, and 900 degrees high temperature air duct LKE490' and other products. The air duct series has a wide range of products, with different high temperature resistance ranges and high temperature air duct performance of different materials. There are differences, and the application occasions are also different. So what are the things worthy of our attention when using pressure and high temperature telescopic ducts in production and life?
1. It is necessary to clarify the temperature resistance limit of the product. If the temperature exceeds the limit temperature of the product, the air duct will not be durable. For example, the high temperature resistant air duct ventilation of 400 degrees refers to the use at room temperature of 400 degrees, and the instantaneous temperature reaches 450 degrees (only for short time use). If it is used for a long time at a temperature beyond the limit range that the air duct can withstand, the air duct will not be durable. Therefore, when using high-temperature air ducts or other industrial hoses, they must be kept at the standard temperature. The highest temperature can be reached in an instant, but the standard temperature cannot be exceeded for a long time to avoid rupture of the air duct.
Second, high temperature resistant air ducts are either telescopic or non-retractable. When using, it should be noted that the non-retractable ducts cannot be compressed together, and their minimum bending radius should not be exceeded when bending; the retractable duct is in Do not stretch excessively during stretching, and cannot stretch hard after exceeding its standard length.
3. When using high-temperature air ducts, you should pay attention to the pressure range, which is divided into positive pressure and negative pressure. The positive pressure duct is used for exhaust or ventilation; the negative pressure duct is used for exhausting, and the negative pressure duct is used. It can be used for ventilation and exhaust. If the positive pressure air pipe is used for exhaust, if the pressure is too high, the air pipe will be flattened or broken. Therefore, it is necessary to distinguish whether it is exhausted or exhausted when using it.
Fourth, the size of the air duct, the high temperature resistant telescopic air duct is generally used for industrial ventilation and exhaust, usually the high temperature resistant air duct is installed on the production equipment, so the diameter of the high temperature resistant air duct must be If the connected equipment is matched, if the diameter of the air pipe is too large, it may cause air leakage at the interface after connecting the equipment, and normal exhaust air cannot be completed. If the pipe diameter is too small, the air pipe cannot be connected to the equipment, and the wind speed of the ventilation and exhaust It will also be subject to certain restrictions, directly affecting the normal operation of our industrial equipment.
5. The medium flowing in the air pipe, the pipe used is different, and the hose used is different. Some of the flowing medium is chemical products. At this time, the high temperature resistant air pipe we use must be able to prevent the corrosion of chemical products. Yes, and the high temperature resistant air pipe we choose must be able to meet the requirements of the concentration and temperature of the circulating medium. For media with different compositions, we must use high temperature resistant air pipes of different materials for transportation.