1, The ultimate pressure of the vacuum pump should meet the process of working pressure.Choose the ultimate pressure of the pump is lower than the technical requirements about an order of magnitude.   2, Scope of each vacuum pump has a certain work pressure, therefore, the working point of t...

Due to a variety of vacuum pump performance will satisfy to vacuum containers in addition to have in common, it also has the differenent place .So must clear when choose vacuum pump in the vacuum system to work is very important, vacuum pumps in various work areas the role of the sum up basically...

Roots vacuum pump (referred to as the Roots pump) is a rotary positive displacement pumps. It is evolved from the Roots blower. Depending on the scope of work Roots vacuum pump, is divided into vertical atmospheric low Roots vacuum pump; a Roots vacuum pump (also called mechanical booster) and hi...

Since the 1950s, China’s salt industry has experienced great changes in production after the United States and the Soviet Union. For salt, they use multi-effect evaporation process,  increasing the effective temperature difference ,then to increase production, energy saving, and the first e...

A turbo-molecular pump has disadvantages like any vacuum pump. Here are some disadvantages: (1) high cost Turbo molecular pumps and cryogenic pumps at the pumping speed more than 1000l/s are expensive than the diffusion pump at the same pumping speed. However, due to the turbo molecular pump in t...

1, the steam ejector pump Steam jet pump is a single-stage steam ejector, steam at high pressure to work 1000 ~ 1400m / s high speed from the nozzle. In the course of the injection pressure of the steam energy into kinetic energy to generate a low pressure, the gas inhalation. Gas mixed with the ...

Vacuum pump system used in the material can be divided into structural and auxiliary materials. The former is the main material of the vacuum system. It spaced vacuum and atmosphere. Withstand the atmospheric pressure is usually metal and / or glass. The latter refers to the elastic sealing mater...

The basic characteristics of the vacuum valve having high airtightness (sealing reliable); resistance to airflow as small as possible (i.e., the conductance valve as large as possible); a sealing member wear resistance, can be used repeatedly, and long life; Valve materials and seals outgas small...

Vacuum system is composed of a vacuum vessel, vacuum pumps, vacuum valves, vacuum gauge, vacuum sealed, condenser and pipe combination according to certain requirements. Basic requirements (1) of the vacuum system (a) freeze-drying of materials needed, should be able to reach a certain limit vacu...

Some of the chemical production process, often need to be at less than atmospheric pressure. Vacuum is an absolute pressure lower than atmospheric machinery and equipment. Many structural type vacuum pump, hereby the chemical commonly used in several types of vacuum pumps are described below. 1. ...