Vacuum pump unit selection method
The vacuum pump unit uses the Roots pump as the main pump, and the vacuum pump unit uses the Roots pump as the main pump. The rotary vane pump is made of a foreline pump in series. Its compact structure and easy operation. Suitable for the extraction of air and other non-condensable and non-corrosive gases, used in various vacuum systems that require large pumping speeds and high vacuums. Such as: vacuum smelting, power capacitors, transformers, vacuum impregnation, vacuum coating equipment, such as pre-extraction. When using a pump that does not meet the pumping and vacuum requirements, several pump combinations are required to complement each other to meet the process requirements.
Pre-vacuum is required; some vacuum pump inlet pressures are lower than atmospheric pressure, and vacuum pumps have vacuum pumps that cannot operate at atmospheric pressure. A foreline pump is required, so it is necessary to combine the pumps. The combined use of a vacuum pump, called a vacuum pump unit, enables the vacuum system to achieve better vacuum and exhaust. The combined vacuum pump should be chosen correctly. Different vacuum pumps require different requirements for the gas to be pumped. For example, the Roots-swirler unit is not suitable for systems containing more condensable gases.
More information in China vacuum pump trading network
Sms Spunmelt Nonwoven Production Line
The sms non-woven fabric production line is used to produce polypropylene fiber spun webs and hot-rolled reinforced non-woven fabrics. Using polypropylene as the main raw material, supplemented by color masterbatches and additives such as anti-oxidation, anti-pilling, and flame retardant, we can produce polypropylene spunbonded hot-rolled non-woven fabrics with different colors, different properties, and suitable for various purposes. It has different uses and is widely used in medical treatment, sanitation, agriculture, construction, geotechnical industry, making non-woven protective clothing, etc.
Various special treatments are carried out on non-woven fabrics to meet the requirements of customers for various special properties of non-woven fabrics. The treated non-woven fabric has anti-alcohol, anti-blood, and oil-resistant functions, and is mainly used in medical surgical gowns and surgical drapes. Antistatic treatment: Antistatic non-woven fabrics are mainly used as materials for protective equipment that have special environmental requirements for static electricity. Absorbent treatment: Absorbent non-woven fabrics are mainly used in the production of medical consumables, such as surgical drapes, surgical pads, etc. Flame-retardant treatment: Flame-retardant non-woven fabrics are widely used in furniture products and aviation products. Antibacterial deodorization and photocatalyst effect treatment: This kind of non-woven fabric is mainly used in the field of household products. Anti-ultraviolet treatment: Anti-ultraviolet, anti-aging non-woven fabrics are mainly used in agricultural covering fabrics, car covers and other fabrics where sun protection and anti-aging effects are required. Fragrance treatment: Fragrance non-woven fabrics are used in sanitary products (mint, lemon, lavender, etc.).
The composite production line can be replaced with different configurations to produce S, SS, SSS and other series of products to meet the needs of customers in the polypropylene spunbond non-woven market for different purposes.
Sms Spunmelt Nonwoven Production Line,Sms Non-Woven Fabric Making Machine,Sms Spunmelt Composite Non-Woven Fabric Machine,Sms Pp Spunbond Meltblown Making Machine
Changzhou Puyisen Machinery Technology Co., Ltd. , https://www.smmsmachine.com