It is vital that the fluid passing through the pump is clean and free from abrasives or solids as. Positive displacement, rotary pump characteristics. Generally used for low pressure, highvolume, flow applications. The fluid in screw pumps moves between the screw threads and is displaced axially as the screws rotate and mesh. Centrifugal and rotary pumps fundamentals with applications. Gear pump working principle animation video a gear pump is a rotary type of positive displacement pump. Albany gear pumps are available in many configurations, whilst they may look the same, there may. They are one of the most common types of pumps for hydraulic fluid power applications.
Figure 1 by definition, pd pumps displace a known quantity of liquid with each revolution of the pumping elements i. A rotary vane pump is a positivedisplacement pump that consists of vanes mounted to a rotor that rotates inside a cavity. Piston and progressing cavity pumps have rotary forms. Rotary gear pump peristaltic pump gear pump proportioning pump vacuum pump screw pump screw pump 2. Model of a gerotor pump in pumplinx with the detail of the rotary. Pdf during the working cycle of an external gear pump, hydraulic oil trapped between the pair of meshing gear and. Sealless rotary pumps for nomenclature, definitions, application, operation, and. The design ensures that the sugar crystals contained within the liquids are not damaged by the pumping action, and that the pump is subjected to minimum wear. With our diverse standard and high performance gear pump range we are able to serve all your needs and respond to any challenge. Fixed and variable displacement motors are available. The vanes are located between the two discs, all in a single casting. Dayton teel rotary gear pump 1 npt bronze 58 shaft 1p770. For viking pumps, the material choice refers to the pressure containing component of the pump the externals of the pump, like the casing.
Gear pumps are roughly classified into external and internal gear types. Hydac external gear pumps are also available as multiple pump combinations pge104. A gear pump uses the meshing of gears to pump fluid by displacement. When pumping highly viscous fluids, rotary pumps must be operated at reduced speeds because at higher speeds the liquid cannot flow into the casing fast enough to fill it. Product manual pdf view tuthill 1le series are compact, highly efficient, cast iron positive displacement rotary gear pumps with a mechanical seal. On demand, we can provide external gear pumps which are api, atex,trcu 10, trcu 12 and ta luft. Cat pumps configures a number of pumps for special applications and certifications such as atex, co 2, teg, flushed, hightemp and others. Centrifugal pumps develop pressure by increasing the velocity of the liquid liquid is literally flung out of the cutwater. The hydraulic institute has encrypted the ansihi pump standards version 2.
Pump school currently focuses on rotary pumping principles. Our gear pumps are robust, selfpriming and are designed for your specific application. Outline of the gear pump a gear pump is a kind of rotary pump and is defined as a positive displacement pump. The pump features a casing in which a dual gear an outer rotor gear and an internal idler gear and crescent assembly is housed. The variety of models are designed to operated in various temperature ranges specific to application requirements.
Gear pump manual original instructions albany pumps. Gear pumps are useful for pumping viscous liquids or. A complete range of sizes is offered in gear, gerotor, vane and piston style operating configurations. Its function is to supply oil under pressure to various parts of an engine,an automatic transmission or steering system of an automobile. Available in four different sizes, with very narrowstage specific displacement flow and a large range of flange and shaft designs. Centrifugal and rotary pumps fundamentals with applications by lev nelik.
Bronze rotary gear pumps installation, operation, and maintenance instruction introduction congratulations for choosing an oberdorfer pump, the industry standard for quality since 1890. Please contact cat pumps directly at 763 7805440 for more. For rotary positive displacement pumps in auxiliary services e. The vanes are free on one side and enclosed on the other. Strong, durable fixed displacement usually louder than vane pumps handle contamination better lower cost positive displacement pumps are either rotary or reciprocating pumps. Controlledvolume pumps, hydraulically driven pumps and positive displacement reciprocating pumps are not included see api 674 for positive displacement reciprocating pumps and api 675 for controlledvolume pumps. Magma pumps rotary lobe pump, centrifugal pumps, ir and. Cast iron this is the economical wide range of noncorrosive applications material option. Screw pumps are the only type of pumps which are different from other rotary displacement pumps because of the axial flow of the fluid through their pumping elements. Gear pump characteristics gear pumps develop flow by carrying fluid between the tooth spaces of two meshed gears. Api standard 676 positive displacement pumps rotary. Interactive content included in the curriculum for ifstas pumping apparatus driveroperator 3rd edition. Cannot create enough vacuum at its inlet, hence discharge rate.
Pdf gear pumps represent the majority of the fixed displacement. Like the reciprocating pump s a positive displace ment device that delivers with each revolution a given quantity of fluid, is selfprming, and gives practically constant delivered capacity regard. The ei gear pumps are reliable high quality pumps with a long operational lifespan with a space saving design. As the rotor gear begins to turn, the idler gear rotates with the teeth beginning to mesh accordingly. Screw pumps also falls in the category of rotary pumps and have the same mechanism and principle. Magma pumps magma pumps are designed principally to handle high viscosity abrasive sugar products that contain sugar crystals such as massecuite, magma and molasses.
Parker hydraulic motors deliver excellent performance with high efficiency, true wear. Bronze rotary gear pumps installation, operation, and. Gear pumps are found in home heating systems in which the burners are fired by oil. The impeller of a centrifugal pump can be of three types. The pump which you purchased is of the external gear type. Parkers full line of high and low speed pumps provide power ranging up to 15,000 inchpounds of torque with speeds ranging from 12 rpm to,000 rpm. Get the best deals on rotary gear pumps when you shop the largest online selection at. Rotodel rotary gear pumps are useful for handling viscouse liquids i. Pumping action is based on a rotor, idler gear, and a cover cast with a crescentshaped partition. The rotary pump combines the rotary mo tion of the centrifugal with the positive pressure characteristics of the reciprocating pump. Construction bronze rotary gear standard pump housings and helical gears are made of top quality bronze. According to api 676, loads on nozzles are exceeded in just. External gear pumps are compact, robust, and lowcost rotary. These pumps are not selfpriming, as there is a great deal of clearance between the rotating and stationary elements.
An internal rotary gear pump employs a positive displacement principle. The verdergear r series of internal rotary gear pumps are suitable for handling of fluids of any viscosity that require a gentle, pulsation free flow. Carries fluid from one location to another, relatively at low pressure 1721 bar. Installation, operation, maintenance user instructions user instructions 71569246 2167be1. Features of the pump range include the constant capacity of the working principle which delivers a smooth, nonpulsating flow, which is ideal for shearsensitive fluids and for accurate dosing. Pdf dynamic pressure simulation of an external gear pump with. When flooding struck the amarillo, texas area in the fall of 2018, odessa pumps came to the rescue by furnishing our super t series enginedriven pump to confidently move water away from a housing development. For new engineers, mechanics, operators, and plant management, this book will provide a clear and simple understanding of pump types, as defined by the hydraulic institute hi. Zeilfelder gear pumps and rotary lobe pumps api, crtu 1012. Positive displacement rotary gear pumps, gear type. It may be calculated from the physical dimensions of the gears, or it. Adequate lubrication is essential for a rotary gear pump. Free shipping on many items browse your favorite brands. Shurflo lightduty pedestal rotary external gear pumps pumpbiz.
For more experienced users, it will provide a timely update on the recent trends and developments, including actual field operation. The po 70400 series positive displacement rotary vane pumps are available with brass or stainless steel housings with 38 gas or npt ports and internal relief valve. The nominal flow rates range between 70 and 400 lh at 1450 rpm. Any vane pump of this series may be operated at 1725 rpm as well and will provide about 20% more capacity, with a maximum of 530 lh. Additionally, the gear pump systems can be equipped with float controls to meter fluid operations. Rotary pumps use a variety of means to generate flow. They are one of the most common types of pumps for hydraulic fluid power applications gear pumps are also widely used in chemical installations to pump high viscosity fluids. Positive displacement pumps allow liquid to flow into an open cavity trap the liquid in the pump transport liquid from the suction to discharge port mechanically force liquid out of the pump. A pair of gears with many teeth external to the gear and called an external gear pump in gear pumps or a few lobes in lobe pumps is demonstrated in fig. Displacement d the displacement of a rotary gear pump is the volume displaced during one complete. Rotary pump family tree positive displacement pd pumps are divided into two broad classifications, reciprocating and rotary figure 1. Our external gear pumps can be used in many various applications and industries. Iso gear pump iso diaphragm pump iso centrifugal pump iso liquid pump diesel motor he pa bio ion.
Join 5,090,000 engineers with over 3,050,000 free cad files join the community join 5,090,000 engineers with over 3,050,000 free cad files join the community load. Tuthill 1le7 cast iron rotary gear pump with viton seal 1. Printed on acid free paper library of congress cataloginginpublication data nelik, lev. Internal gear pumps use a gear within a gear design.
1000 559 1431 1003 1507 816 403 142 711 601 500 1339 1097 478 718 1154 154 499 117 1070 759 619 189 1372 1047 638 340 341 1433 390 1103 780 1059 6 13