In this study, the flow phenomena of an external gear pump figure 1. Pdf an investigation of external gear pump efficiency. Hseries 3series 2series 4series max series centry series. When an application calls for pumping a clean fluid without particulates in a consistent flow, a gear pump is often the best pump to use. The fluidotech fg200300400 series, born from the solid experience in mag drive gear pumps, is a smart and compact pumpmotor unit.
Its output flow tends to vary little with respect to the pressure at the pump outlet, because the moving. External gear pump overview michael smith engineers. These heavyduty units are rated for 2500 psi service at speeds up to 2400 rpm. Text headings in each module are linked to and f\ rom the table of contents for that module. The first requirement of good a pump must be driven in the direction of. Precise by design, they deliver accurate and repeatable performance, a smooth flow and a pressure up to 18 bar 260 psi. Flange and cover in aluminium or on request, cast iron. Parts book p20p5051 p7576 p315 gear pumps and motors. External gear pump series g azpg22 fixed pumps v 22. This pumping principle produces a pulsating flow, rather than a smooth flow. Nevertheless, the mechanical pumps are, with the exception of the sorbtion pumps, the unavoidable initial stage before any attempt can be made to activate capture pumps and to reach the ultrahigh vacuum domain. The high operating pressure and speed combined with the large number of displacements, mounting options and port configurations make these units ideal for single and multiple pump and motor applications. Outline of the gear pump a gear pump is a kind of rotary pump and is defined as a positive displacement pump. Section 4 reports the simulation results and campares them with those in 7.
Gear pump components pump unit assembly northern pump is a full service gear pump manufacturer. Gear pump division kings mountain, north carolina usa 4 a parker pressureloaded gear pump consists of two. The pump housing is in stainless steel aisi 316l, while gears and. Fixed displacement gear pumps nevada hydraulic sales. In a positivedisplacement pd pump, a discrete amount of fluid is trapped, forced through the pump, and discharged.
Theyre built on our heavyduty p30 and p50 pump frames. Aluminium gear pumps technical catalogue salami spa. A flow of oil is produced by the pump due to this rotation. Group 3 gear pumps technici al information 77c 33m 55k 50c 100 66m 88 66m 88 5 turolla l1016456 september 20 rev c snp3nn 01ba cut away pump design sep3nn the sep3nn gear pump is. External gear pump overview external gear pumps are a popular pumping principle and are often used as lubrication pumps in machine tools, in fluid power transfer units, and as oil pumps in engines. External gear pumps external gear pumps are not pumps with their gears on the outside of the pump body. Each individual pump is preset for rear connection to one or more pumps by interposition of the appropriate coupling flange.
This design allows very fast maintenance, mttr pump, there is no need of recalibration. To return to this page, please click on the red text in the top corner of each page. P3031, p50 51, p7576 series single and multiple pumps and motors. The external gear pump uses two identical gears rotating against each other one gear is driven by a motor and it in turn drives the other gear. A gear pump is used for transferring and metering of liquids and power transfer in a process. Applications for piggyback pumps are usually found where the range of pump outputs. Displacement d the displacement of a rotary gear pump is the volume displaced during one complete. Experimental study of the flow in an external gear pump by. Qx double pumps consits of two single pumps mounted on a common drive shaft. Liquiflo gear pumps are available with several ancillary options and accessories. Pump valve combinations reliable pumps commercial s g101 pump valves are a compact hydraulic power source for small dump trucks. A gear pump employs a system of meshing of gears to move fluids. Download the file data into the pump memory disconnect the pump from the pc carry out your application on the spot, using the pump as a standalone unit unique. For example, in industrial applications such as pumping inks, coatings, or for pipeline injection, a gear pump would be the recommended solution.
Series d hydraulic gear pumps technical information. Parker hannifin corporation gear pump division youngstown, ohio usa 2 catalog hy090101us general information c101c102 series, g101 g102 series combination pump valves failure or improper selection or improper use of the products andor systems described herein or related items can cause death, personal. Jul 18, 20 external gear pumps work external gear pumps are similar in pumping action to internal gear pumps in that two gears come into and out of mesh to produce flow. Hydraulic gear pump and motor failure analysis and repair guide page 3 of 32 alamo industrial 1502 e walnut st, seguin, tx 78155. Group 3 gear pumps technici al information 77c 33m 55k 50c 100 66m 88 66m 88 5 turolla l1016456 september 20 rev c snp3nn 01ba cut away pump design sep3nn the. P3031p5051p7576 gear pumps and motors hydraulic pump. Figure 1 shows a crosssectional view taken through the gears of a typical gear pump. Modeling and simulation of gear pumps based on modelicamworks. Cross gear pumps motors 40 series gear pump suction characteristics typical performance data do not operate above the rpminlet vacuum curve or 8 in. Salami gear pumps are available with displacements from 1. Integral gear sets include the shaft, driven gear and idler gear as one unit. Features include a small footprint, plus drives that are stackable. Defects classification pawel pietkiewicz chair of mechanics and machine design university of warmia and mazury in olsztyn k e y w o r d s. Market gear pump 0 group motor reference lab e bfback inlet and front out.
This paper presents an experimental study of external gear pump efficiency based upon an analysis of the stribeck values. A list of our current surplus stock of hydraulic gear pumps. Theyre based on commercial s well proven p30 design. Abstract the paper comprises research results of the gear pump typical failures and their connection with. Low pressure pulsation with voith pumps and internal gear pumps. Parts book p20p5051 p7576 p315 gear pumps and motors distributor program. External gear pumps can come in single or double two sets of gears pump configurations with spur shown, helical, and herringbone gears. They have gear shafts with the teeth on the outside external part of the shaft, but inside the pump housing as in figure 1. The fluidotech ig series positive displacement gear pump has been designed to handle viscous fluids with impurities in suspension and temperatures up to 200 c 392 f whilst delivering a smooth flow. The future of hydraulics has arrived with variable speed pump systems.
Fluid shall be carried between gear teeth and shall be displaced when the gear teeth mesh. Voith internal gear pumps provide overall efficiency improvement while reducing machine or system power consumption. The volumetric, mechanical, and overall efficiencies of a variety of. It may be calculated from the physical dimensions of the gears, or it. Figure1 control volumes defined in the fluid dynamic model. Due to their design, gear pumps are often used for transporting high viscosity fluids. P315p330p350p365 gear pumps and motors hydraulic pump. Because of the mechanism involved, gear pumps qualify as positive displacement pumps. Gear pumps galtech group 2 start pumps 12 tooth gears and consequent decrease in noise levels. All liquiflo gear pump models are available in closecoupled configuration.
Lower pressure can lead to suction of oil through the front flange seat of the shaft without seal. We frequently build and assemble pump unit assemblies, or skids as they are sometimes called. This portable document format \ pdf \ file contains bookmarks, thumbnails, and hyperlinks to help you navigate through the document. The fluid is transferred around the interior of the casing in the. Operate the unit in an environment where both the following conditions are satisfied. Pump and motor division chemnitz, germany 5 heavyduty aluminium pumps and motors series pgp, pgm 500 pgp 500 pumps offer superior performance, high efficiency and low noise operation at high operating pressuresthe. They typically consist of a northern heavy duty gear pump, electric motor, shaft coupling, and coupling guard, mounted on a unit base. Issue 5 section 1 standard gear pumps to view a gear pump, please click on the name below or use the bookmarks in your pdf software. These include temperature control jackets, gear reducers, variable speed drives, air motors, relief valves, repair kits, replacement cartridges and base plate mounting. Commercials pumps feature onepiece drive shafts and gears made of hardened, alloy steel and supported on heavyduty roller. The enclosed oil volume that which is trapped between two tooth pair contacts can either be. Each section of a multiple pump or motor should be regarded as a. P315 p330p350p365 gear pumps and motors php manufactures bushing gear pumps and motors to the highest quality and durability for the most demanding applications.
P3031, p50 tm 51, p7576 tm series single and multiple. The larger pump of the combination is situated at the shaft end the drive side. This page will introduce you to gear pumps, applications that use gear pumps, and the use of powder metal for producing pump gears. Ipvap highpressure internal gear pumps for variable speed drives. Our gears are produced to precise tolerances with a true involute profile along the tooth thus maximising volumetric efficiency.
For every revolution the gears in a gear pump make, the same amount of fluid is moved. The modules listed in the overview are linked to the corresponding pages. One rotor of internally cut gear teeth will mesh with one externally cut gear. Hydraulically, the two pumps operate independently of one another but they share a common suction port in the pump.