| 摘要 |
A gear pump for mixing first and second components includes an inlet port, a premix chamber, and a second component valve. The premix chamber has a first end communicating with the inlet port, and a second end communicating with a source of the first component, thus providing a fluid path to carry the first component through the inlet port upon operation of the gear pump. The second component valve regulates fluid communication between a source of the second component and the premix chambe r. Upon operation of the gear pump, the first component is drawn from its sourc e into the premix chamber, the second component is drawn from its source, through the second component valve, and into the premix chamber, and a premix of the first and second components is fed from the premix chamber through said inlet port.
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