Roots vacuum pump has a very important performance index, the maximum allowable pressure difference, which is a key index related to whether the pump can operate normally. Before starting the Roots pump, the fore pump must be used to pre-pump the vacuum system to a certain degree of vacuum, and w...

In the process of assembling bearings and machine seals, most of the water ring pumps produced by EVP are assembled by hoisting (that is, vertically installing the pump), while the maintenance and replacement of bearings and machine seals by users in the later stage are mostly horizontal assembly...

The semiconductor industry has surpassed the traditional steel industry and automobile industry, and has become a high value-added and high-tech industry in the 21st century. Semiconductors are the core of many industrial equipment and are widely used in core fields such as computers, consumer el...

Vacuum leak detection is the process of detecting the leak location and size of the vacuum system. Air leakage is the phenomenon in which gas flows from the high pressure side to the low pressure side through leaks or gaps in the system. False leakage is a physical phenomenon relative to real lea...

The screw vacuum pump is a common vacuum pump that is often used in the industrial field. It is recommended to add a valve between the screw vacuum pump and the pumped cavity, because most of the time the screw pump requires air/nitrogen/liquid purging, and the valve needs to be closed before pur...

Polycarbonate (PC) is a thermoplastic engineering plastic with excellent comprehensive properties. It has the advantages of high strength, high toughness, high heat resistance, light weight, good optical properties, excellent processing performance and color stability. , Widely used in automobile...

Introduction Vacuum flash cooling refers to the cooling process in which the liquid is atomized and sprayed onto the cooled surface in a vacuum environment, and the flow of the liquid film formed on the cooled surface, flash boiling and other physical phenomena are used to dissipate heat from the...

The invention discloses a method for soil dehydration and drying or vacuum solidification, belonging to the field of soil dehydration and foundation reinforcement. It inserts a specially designed vacuum plate in the soil, then removes the moisture in the soil through the vacuum preloading process...

Liquid ring pump as a common vacuum pump in the market, has a very good application in different industries. As they are used over the years, vacuum pumps also require regular maintenance. Due to the various working conditions, the field voltage in each country also has a little difference, some ...

Characteristics of liquid ing chlorine gas compressors do not require high water content in chlorine (the mass fraction of water in chlorine is less than 400 ppm), and the price is cheap. Domestic small centrifugal compressors generally require the mass fraction of water in chlorine to be below 2...