Ross multi-shaft mixer improves lift and seal design

December 14, 2018

A newly improved design for a multi-shaft mixer (Model PVM-1500) from Charles Ross & Son Co. (Hauppauge, NY) features enhanced dual-post hydraulic lift and seal features.

A newly improved design for a multi-shaft mixer (Model PVM-1500) from Charles Ross & Son Co. (Hauppauge, NY) features enhanced dual-post hydraulic lift and seal features. The company says that the lifting feature on the 1500-gal mixer is double-acting. It is a fully hydraulic cylinder that enables operation at higher pressure, allowing for a smaller cylinder overall and requiring significantly less oil during operation.

“The net result is a lifting system that operates at lower cost, requires less maintenance for the end user, and provides faster lifting speed when raising and lowering the agitators,” said David Hathaway, vice president, Ross Engineering, in a press release.

This new seal arrangement also enables seal replacement without removing agitator shafts and, unlike previous designs, no longer requires the removal of the mixer from the tank or tank entry in order to access the seal.

The PVM-1500 mixer model pictured features three independently driven agitators: a screw auger, a high-speed disperser, and a three-wing anchor agitator. The sides and bottom of the changeable mixing vessel are insulated and are also jacketed for up to 50 psig. The vacuum-rated machine is designed to run 24 hours per day, 7 days per week, and offers rugged touchscreen controls that display digital readouts for speed, cycle time, vacuum level, and batch temperature.