1. At first, the thesis describes the fluid and acentric narrative mode.

2. It is proved that Model LCG Multibarrel Acentric Dust Catcher is new-type, advanced and high efficient dust catching equiment.

3. Acentric ingates are used to set on the moving mould and slag-collector is set at the end of ingate and at converging zone of liquid metal from two sides.

4. But its acentric, inorganization, dynamic structure and route and wireless transmission complicate its application.

5. It is recycling machine for machine with acentric dry method , flts for bonded sand sand.

6. Researched and developed by our company, Model LCG multibarrel acentric dust catcher is a dry-type solid and gas separating machine and used in the field of grain and oil processing.

7. The vacuum degas unit consists of vacuum degas machine, vacuum pump and acentric pump.

8. There is a non - linear relationship between thermodynamical properties and acentric factors of substances.