| 摘要 |
<p>A high pressure mixing head (1000) and a reactive component injection valve (1, 2, 3) for mixing at least two reactive components. The mixing head (1000) comprises a mixing head body (999) having an elongated mixing chamber (2050), a first metering plunger (2010) an elongated quieting chamber (3050) disposed substantially normal to said mixing chamber. The quieting chamber has a second clean-out plunger (3010) therein. The first metering plunger (2010) has at least one axially extending by-pass channel (2080). The reactive component injection valve (1, 2, 3) comprises a valve body (600); an injection nozzle (604, 605); a reactive component supply passage (21); a first reciprocating member (620) disposed within the supply passage (21); a reactive component recirculation passage disposed (671); and a second reciprocating member (650) disposed within the recirculation passage.</p> |
