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31. 发明授权

US06685443B2 Pneumatic reciprocating pump 失效
标题翻译：气动往复泵
公开(公告)号：US06685443B2
公开(公告)日：2004-02-03
申请号：US10191100
申请日：2002-07-09
申请人： John M. Simmons , Tom M. Simmons , David M. Simmons
发明人： John M. Simmons , Tom M. Simmons , David M. Simmons
IPC分类号： F04B4306
CPC分类号： F04B43/0736
摘要： A pneumatically-actuated reciprocating fluid pump and shuttle valve combination operates in an “air-assist” mode and a “non-air-assist” mode. In the non-air-assist mode, the shuttle valve is shifted by a blast of pressurized supply air from the pneumatic chamber in its pumping stroke as the flexible diaphragms and drive shaft reach the end of their pumping stroke. This blast of pressurized air used to shift the shuttle valve has the effect of reducing the air pressure in the pneumatic chamber immediately prior to the point in time that the drive shaft reaches the end of its stroke in order to provide a cushioning effect at the end of each pumping strokes cycle, in order to lessen the effect of the drive shaft and diaphragms abruptly reversing direction at full air pressure. In the air-assist mode, a secondary source of compressed air is utilized to shift the shuttle valve, rather than drawing pressurized air from the pneumatic chamber during its pumping stroke. In the air-assist mode, the full effect of the pressurized air to the pump is directed to pump fluid through the pump, and is not lessened by tapping a minute amount compressed air at the end of each pumping stroke cycle for shifting the shuttle valve.
摘要翻译：气动往复流体泵和梭阀组合以“空气辅助”模式和“非空气辅助”模式运行。在非空气辅助模式中，当柔性隔膜和驱动轴到达其泵送冲程的末端时，梭阀在其泵送行程中被来自气动室的加压供气的冲击移动。用于移动梭阀的这种爆炸的加压空气具有在驱动轴到达其行程末端的时间点之前减小气动室中的空气压力的效果，以便在末端提供缓冲效果的每个泵送冲程循环，以便减小驱动轴和隔膜在全空气压力下突然反向的作用。在空气辅助模式中，使用二次压缩空气源来移动梭阀，而不是在其泵送冲程期间从气动室抽取加压空气。在空气辅助模式中，加压空气对泵的全部作用是通过泵泵送流体，并且通过在每个泵送冲程循环结束时敲击微小的压缩空气而不会减轻，以便将梭阀。

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