Vacuumizing apparatus for mixed gas cylinders
By designing a buffer tank structure with a three-way pipe and a lifting buffer valve, the problem of high-pressure gas impact in the initial stage of vacuuming of the mixed gas cylinder was solved, which protected the vacuum pump, improved the pumping efficiency, and simplified equipment control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU NEW CENTURY MIXED GAS CO LTD
- Filing Date
- 2026-06-03
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, high-pressure gas from the mixed gas cylinder directly enters the molecular turbo pump during the initial stage of vacuuming, causing blade deformation or damage. Furthermore, the pumping efficiency decreases during the low-pressure stage. Although the existing buffer tank can buffer the flow, it affects the effective pumping speed.
The system employs a buffer tank design with a three-way pipe, a cylinder, a funnel, and a liftable buffer valve. After the high-pressure gas is diverted, part of it enters the cylinder, pushing the buffer valve to rise and seal the bottom of the funnel, while the other part enters the funnel, forming a multi-stage buffering effect to reduce gas flow rate and impact pressure. During the low-pressure stage, the buffer valve automatically descends, and the airflow path switches to a straight-through state, increasing the extraction path.
It effectively prevents turbine blade damage, extends vacuum pump life, improves vacuuming efficiency, simplifies system structure, enables automated control, and ensures equipment stability and efficient operation.
Smart Images
Figure CN122407579A_ABST