position in a direction of rotating shaft of the first disc member; and a cylindrical resilient member arranged to shut off the extremity end of the rotating shaft and a base end side of the cylindrical member of the eccentric shaft unit against fluid within the pump head.SELECTED DRAWING: ...
DRAWING UP THE EVOLUTION PEDIGREE OF THE POSITIVE DISPLACEMENT PUMP MACHINE AND THE CREATIVE DESIGN——REVIEWING THE PAST HELPS ONE TO UNDERSTAND THE PRESENT The positive displacenent pump machine that produces periodical change of a closed volume can be designed to be an internal combustion engine,...
A Positive Displacement Pump has an expanding cavity on the suction side and a decreasing cavity on the discharge side. Liquid flows into the pumps as the cavity on the suction side expands and the liquid flows out of the discharge as the cavity collapses. The volume is a constant given eac...
The structure of the pump is mainly composed of pump body, active and passive screw, shaft seals, bearing frame device, synchronous gear, safety valve and other components (see structure schematic drawing). There is no thread in the middle of the active an...
Compatible with Graco’s EFR (Electric Fixed Ratio) and HFR (Hydraulic Fixed Ratio)Meter, Mix, and Dispense Systems, Graco Z-Series Pumps can be used in an endless amount of applications that require two-component materials. The Z-Pump’s positive displacement technology produces consistent flow...
When drawing liquid through a suction a pump generates a low pressure in the suction area, which, if it reachesvapour pressure, gives rise to gas coming out of solution and causing bubbles to form. An estimate of the margin above vapour pressure, used for many years, isNet Positive Suction...
Negative pressure systems are commonly used for drawing materials from multiple sources to a single point. There is little or no pressure difference across the feeding device and so multiple-point feeding into a common line presents few problems. As a consequence, the feeding device can be a ver...
Positive displacement pumps have been used for many years to provide metered amounts of fluid materials, commonly liquids. In general, such a pump functions by drawing liquid from a source through a supply conduit into a metering chamber of known volume, the chamber also having a closeable outle...
and with check valves integral with the pump chamber inlet & outlet ports. As can be seen from drawing, FIG. 2, there are two basic components comprising this pump, the pump chamber 51 and the power cylinder-actuator 52 coupled together through a cylinder boss 53 provided with an appropriate...
The positive displacement pump has a side clearance adjustment member (4) for moving a shaft (3) to the rotor (1) side or a side separated from the rotor (1) when rotating with respect to a pump main body (6).;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2020,JPO&INPITOGURA TADAHIRO...