differential sliding valve 差动滑阀
precision sliding valve 精密滑动阀
piston-type sliding valve 活塞式滑阀
sliding valve with balancing plate 平衡板滑阀
slab type sliding gate valve 平板式滑动闸阀 ; 平板式滑动
The utility model relates to a vacuum gaining device, in particular to the improvement of a sliding valve in the sliding spool vacuum pump.
本实用新型涉及真空获得设备，特别是滑阀式真空泵中滑阀的改进。
Therefore, during the vacuum plugging, the intermediate sliding valve (14) can be held near the opening end (30) of the syringe cylinder (12).
因此，在真空打栓时，可利用注射筒(12)的开口端(30)的附近保持中间滑动阀(14)。
Even when an intermediate sliding valve (14) is disposed at the position of the groove (32), the interior of the syringe cylinder (12) can be depressurized.
即使在具有该槽（32）的位置配置有中间滑 动阀（14）的状态下，也可将注射筒（12）的内部减压。
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