The idea is with the help of vacuum pump to increase the pressure difference between material hopper and vacuum chamber, hence the packing environment can be achieved.
通过真空泵减压，使真空室里面的负压慢慢增大，在产品供应漏斗和真空室之间产生压差，从而实现包装过程。
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These include hopper sizes and shapes, conveying line sizes and construction, vacuum pumps, chutes, feeders, dust collection, drive sizing, and operating and data-collection systems.
The unit is used to realized the airflow conveying of granulated resign ny mens of the technology of low vacuum. It can be used with a hopper dryer to automatize dry material-supplying.