During the past 30 years, sine pumps have developed to meet the food and beverage industry need for a pump that is simpler, gentler and more reliable than traditional positive displacement pumps. Sine pumps are characterized by a sinusoidal rotor that creates four separate and symmetrical pumping chambers within the pump. The undulating action of the turning rotor gently transfers product. Without the arduous fluid path and pulsation that is characteristic of other technologies, sine pumping delivers constant volumetric displacement while eliminating product compression and minimizing damage to large particles or shear sensitive products. These capabilities make sine pumps ideal for food and beverage applications. Whether pumping thick or shear sensitive products, the large, open cavities ensure that food is not damaged during transfer.
Four food processing facilities increase plant efficiencies with this alternative to traditional solids-handling pumps.
01/20/2015
The gentle, low shear product-handling capability of the sine pump is key to its success in confectionery applications. (Images courtesy of Watson-Marlow Pumps Group)
The sine single-rotor design provides zero pulsation while large pumping chambers maintain product integrity.
Sine pumps reduce offloading time from tankers compared with alternative pump technology.
3 A candy manufacturer chose sine pumps to transfer a chocolate that contained nuts and crisped rice. The sine pumps prevented shear to the product, and the pumps’ powerful suction minimized hydraulic problems with their long suction runs. These characteristics eliminated recurring costly system damage associated with water hammer and pump cavitation.
4 Positive displacement sine pumps have become the technology of choice for the fast-growing ready-to-pour and frozen concentrate market segments. The multiple phases of juice processing—including loading and unloading of the tankers that transport the concentrate—require superior speed of transfer, powerful suction, low shear and low pulsation. Sine pumps transfer concentrate to a blending process, where the end product is ready-to-pour juice, or to a filler for packaging as frozen concentrate.