| 摘要 |
<p>This device for rapid and extremely accurate filling of containers includes a duct for bleeding off gas bubbles from a metering device, where prior bubble-eliminating provisions are inadequate due to extreme product viscosity. The device also has relative adjustment between a positive mechanical stop (30d,c), used to define very precisely the substance/volume metered by a biacting piston (27) operating within a chamber (26), and a control switch (30a) used to reverse the piston. This adjustability corrects an inaccuracy arising in prior devices due to the necessarily slower speed of the piston with extremely viscous product. The surface of the piston (27b) is concave and the chamber is provided with a sealable gas-bleed duct (26d).</p> |
