Lifting Gate Valve Vacuum Pump With Uniform Circumferential Exhaust
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Solution Overview
Problem
Existing vacuum pump devices with lifting-type gate valves face complexity in achieving uniform gas exhaustion due to the need for additional structural members to prevent gas leaks, which complicates the sealing mechanism.
Innovation Solution
A vacuum pump device design that includes a rotor and stator with a through hole along the rotating shaft direction, allowing a supporting member to be positioned at the center, enabling uniform gas exhaustion with a simpler structure by using a lifting-type gate valve with a valve body and valve seat, where the supporting member is integrated within the stator's through hole.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a supporting member is disposed at the center part of the vacuum pump, then uniform gas exhaustion in the circumferential direction is achieved, but additional sealing structures are needed to prevent gas leakage from the gap between the rotor and supporting member, increasing device complexity
Solution Approach 1:
The supporting member is nested within the through hole of the stator, with the through hole providing a dedicated pathway that accommodates the supporting member while maintaining structural integration. This nesting approach allows the supporting member to be positioned at the center for uniform gas exhaustion without requiring additional external sealing structures, as the through hole itself provides the necessary containment and structural support.
2Reliability
If additional sealing structures are added to prevent gas leakage from the rotor-gap, then gas tightness is improved, but the structure of the vacuum pump device becomes more complicated
Solution Approach 1:
The stator serves multiple functions: it provides structural support for the rotor, contains the through hole that accommodates the supporting member, and maintains the overall vacuum pump structure. By making the stator multi-functional, the patent eliminates the need for separate sealing structures, as the stator's integrated design already provides the necessary gas tightness and structural support without additional components.
Data Source
AI summary
Uniform exhaustion can be realized with a relatively simple structure in a vacuum pump device.A vacuum pump portion includes an outer rotor and an inner stator, a lifting-type gate valve portion includes a valve body and a valve seat, and the valve body is lifted/lowered with respect to the valve seat along a rotating shaft direction. And the inner stator includes a through hole along the rotating shaft direction of the vacuum pump portion, and at least a part of a supporting member which supports the valve body is disposed in the through hole.