| abstract |
The utility model discloses a liquid state CO2 conveying device used for a dry ice expanded tobacco system. One end of a gas phrase balance pipe is connected with a pipeline between a process tank and a process pump, and the other end of the gas phrase balance pipe is connected with the process tank. When the liquid state CO2 is conveyed, the liquid state CO2 is sucked out of the process tank by the process pump and is sent to a steeper. The CO2 which is gasified in the pipeline between the process tank and the process pump is released back into the process tank through the gas phrase balance pipe. The liquid state CO2 conveying device used for the dry ice expanded tobacco system solves the problems that due to the fact that the liquid CO2 is gasified, pressure is kept in the process pump for a long time, and mechanical sealing is damaged. The liquid state CO2 conveying device protects the mechanical sealing, prolongs the service life of a machine pump, eradicates dangerous factors of spraying and leaking of high pressure CO2, avoids potential safety hazards, ensures production duration and process quality of products, relieves labor intensity of maintainers and reduces maintenance cost. |