Mar 3, 2012 · Gear pumps are rotary pumps in which two or more gears mesh to provide the pumping action. Usually one of the gears is capable of driving the other (s). The simplest form of this type of rotary pump is the gerotor pump.Figure 3.3.11 shows a …

Aug 1, 2004 · By virtue of their efficient pressure building capabilities, polymer gear pumps provide a cost effective method to process the polymer with a positive impact on the quality of the product. Many plants today employ a gear pump for discharging the polymer and conveying it to downstream processing stages, mixers, or pelletizers.

Jan 1, 2018 · A miniaturize hydraulic gear pump is used for pressure generation in the fluidic actuators used in some of the medical and bio-medical devices such as…

The external gear pump (Fig. 5.6) consists of two equal sized meshing gears, one driving and the other an idler, which rotates inside a housing (Fig. 5.7). As the gears unmesh at the suction side of the pump, a vacuum is formed. Atmospheric pressure forces the fluid into the pump where the fluid is carried between the gear teeth and the case to the discharge. At the discharge, the …

Jan 1, 2017 · This paper presents important aspects of a practical methodology applied to design a gear pump using the ANSYS Gambit software parametric abilities followed by a FVM analysis of its assembly to identify the most stressed components. A model for the prediction of the dynamic behaviour of an external gear pump is presented. We took into account the most important …

Sep 1, 2018 · In common with other positive displacement pumps, traditional external gear pumps based on involute teeth are commonly characterized by a significant non-uniformity of the outlet flow. This is a detrimental feature, being at the basis of fluid-borne noise generation as well as of vibrations induced into the overall system connected to the pump.

Oct 1, 2010 · A non-linear lumped kineto-elastodynamic model for the prediction of the dynamic behaviour of external gear pumps is presented. It takes into account …

Mar 1, 1994 · A pump wear model Building on work first suggested by Backe [5], assume that wear takes place only with the passage of particles through the leakage paths. With a gear pump in par- R. H. Frith and W. Scott I Wear m external gear pumps 123 ticular, the leakage flow will rejoin the inlet flow. A simple model then is seen in Fig. 4.

Sep 1, 2017 · Abstract A pump is a necessary component of ORC units. Although it is simple in a principle and various pump types can be used, reality may easily bring many complications. When designing an ORC for very low power output applications (1-10 kW gross power production), problems such as leakages, mechanical and electrical losses are more significant. Using a …

Feb 1, 2011 · In this paper, the fluid flow in the suction chamber of an external gear pump has been analysed experimentally for two different rotational velocities. Obtaining the mean and the instantaneous velocity fields in the suction chamber can help to identify internal fluid flow system in order to improve the performance and the design of the pump [10].