| 摘要 |
<p>There is provided proportional mixer apparatus for water and soluble oil comprising a venturi assembly (14) and a control assembly (15). The venturi assembly reduces the pressure in mixing chamber (17) coupled to the control assembly (15) by a soluble oil conduit (21) supplied from a reservoir (23). The control assembly (15) comprises a piston and seal assembly (25) operating a tapered metering needle (27) governed by both the pressure in the major fluid flow line sensed through port (32) and the depression in the mixing chamber sensed at port (35), against spring (36). The needle (27) cooperates with the fixed aperture of a metering body (37) to regulate soluble oil flow. An adjuster assembly (46) adjusts the relative positions of the needle (27) and metering body (37) for a given composition across the range of water flow rates.</p> |
