The change from lo to hi pressure is automatic with the lo pressure preset from 400 to 900 psi. Gear pump has a simple mechanism consisting two meshing spur or helical gears the driver and the idler. Rotary gear pumps finds wide application in power plant, steel mills, refineries, oil storage instolations etc. Helical and herringbone gears typically offer a smoother flow than spur gears, although all gear types are relatively smooth. Right angle drives may be available depending overhead motor on the application. They are ideal for transferring high viscosity fluids such as automotive oils, plastics, paint, adhesives, and soaps with a steady and pulseless flow and offer selfpriming capabilities. The hydreco hydraulics pump range includes helical gear and spur gear pumps together with cast iron and aluminium bodies. It is available in cast iron grade with single helical alloy steel gears and hardened and ground shafts. The d series pumps have an excellent reputation for rugged, dependable. If the static lift plus pipe friction losses combine to exceed this figure, pump operation will be erratic or no pumping at all will be realized.
Pdf external gear pumps are one of the most commonly used types of positive displacement machines in high pressure hydraulic control. Gear pumps galtech group 2 start pumps 12 tooth gears and consequent decrease in noise levels. Conventional metering pumps, whether reciprocating. Contact dynapumps for complete pump solutions for the life of the project. Each individual pump is preset for rear connection to one or more pumps by interposition of the appropriate coupling flange. The pump design and product range have matured over many years and in combination with radicon excellence, represents an economic and reliable solution to lubrication and fluid transportation. Introduction and contact details tfp50 group 12 gear pumps tfp0nn 3. Hydraulic gear pump and motor failure analysis and repair. A gear pump is a type of positive displacement pd pump. Useful information on gear pumps what is a gear pump. One rotor of internally cut gear teeth will mesh with one externally cut gear. Useful for pumping and transfer of all viscous liquids, oils and petroleum products. To return to this page, please click on the red text in the top corner of each page. Those are ones that would have actual roller bearings and large displacement, all steel construction.
Series d hydraulic gear pumps technical information. Helical gear pumps dynamic pump and vacuum solutions. Rotary gear pumps finds wide application in power plant, steel mills, refineries, oil storage. Disassembling pump repair kits are available for all albany gear pump models.
First you have a gear pump, a vane pump and the piston pump. High durability, long life, and high efficiency are features of these pumps, which, when combined with the low noise characteristics of the helical gear pumps, make them highly suitable for modern machinery. It moves a fluid by repeatedly enclosing a fixed volume using interlocking cogs or gears, transferring it mechanically using a cyclic pumping action. Pdf analysis of continuouscontact helical gear pumps through.
Model gpcbn is a hilo hydraulic gear pump with 12 displacement combinations with maximum pressures of 900 psi for the low pressure pump and 3000 psi for the high pressure pump. Gear pump manufacturing companies, suppliers and distributors. The gear pump was invented around 1600 by johannes kepler. External gear pump overview michael smith engineers. It delivers a smooth pulsefree flow proportional to the rotational speed of its gears. All d series pump gear shafts are of onepiece construction. Group 2 gear pumps technical information group 2 gear pumps technical information p101 000 high quality case hardened steel gears with superior surface finishing pressure compensated bearings made of antifriction alloy ptfe bronze based bushings for long life and high performance various shaft options including. Making these units the most flexible in todays cost minded market. The pump is so named because it has two gears that are sidebyside or externalto each other. Because of the helical gear design, the overlapping of successive discharges from spaces between the teeth is even greater than it is in the herringbone gear pump. Grasp drive gear, slide off drive shaft and carefully remove key from shaft. With a basic gear pump, it is the kind of pump youll see on any given mobile machine. Misalignment longcoupled pump align pump and motor. This ensures gradual engagement of teeth from one end of tooth to other rather than a sudden engagement as in case of spur gear.
They typically consist of a northern heavy duty gear pump, electric motor, shaft coupling, and coupling guard, mounted on a unit base. Helical rotor pumps for high pressure low noise industrial application. This nomenclature differentiates it from an internalgear pump, which has one gear. Finely keyed and machined gears are easily replaced by sliding on and off the. Also available with customized nozzles, such as a vacuum sediment tank for applications with greater lift or those with large solids. A basic gear pump will have a rotary housing containing two or more gears toothed wheels, helical gears or lobed cams. A gear pump uses the meshing of gears to pump fluid by displacement.
Rotary gear pump selection guide rotary gear pumps are positive displacement pumps that are commonly used for liquid circulation, lubrication, pressure boosting, filtering, medium pressure spraying, sump draining, drum and vat filling, and general fluid transfer applications. This results in a reduction in the amount of air borne noise emitted from the machine. Inline motor standard baseplate design featuring an in line motor with helical gear reducer. Jacketed pump housing and tempered gearshafts for use with. Pump model hg050 hg075 hgioo hg125 hg150 hg200 hg 250 inlet outlet 12 x 12 34 34 112 x 112 20 30 50 75 110 225 350 51 63 5 64. The use of the new elika gear pump eliminates adverse noise effects on hearing and on the surrounding environment. It is easy to install, extremely reliable and requires very little maintenance during its service. Helical gears are similar to spur gears except that their teeth are cut at an angle to the hole axis rather than straight and parallel to the hole like the teeth of a spur gear. Uhe do not accept any liability for misapplication of this information. One gear is driven by the motor and in turn moves the other gear.
The liquid is forced out the discharge port by the meshing of the gears. Gear pumps make good chemical additive dosing pumps provided material compatibility issues are addressed. Roloid gear pump radicon power build range of roloid pump is a gear pump with robust, compact and versatile product. Standard gear pumps to view a gear pump, please click on the name below or use the bookmarks in your pdf software. Rated size ng 005 006 008 011 0 016 019 022 025 spec. We frequently build and assemble pump unit assemblies, or skids as they are sometimes called. System with inline solenoid valve to assure cutoff function. Flange and cover in aluminium or on request, cast iron. Resistant to lowtemperature starts and pressure spikes. Excessive noise and vibration suction andor discharge piping not anchored or properly supported anchor per hydraulic institute standards. Troubleshooting guide troubleshooting guide part 1 problem possible cause corrective action no discharge pump not primed verify suction pipe is submerged.
The most desirable pump installations are those with the short est suction lines. The sep3nn gear pump is available in a limited displacement range from 22. These are the main ones that youll see in any given hydraulic system. This page will introduce you to gear pumps, applications that use gear pumps, and the use of powder metal for producing pump gears. Useful information on gear pumps michael smith engineers. Design analysis and testing of a gear pump semantic scholar. Gear pumps are the most common type of positive displacement pump. Base not rigid enough tighten holddown bolts on pump and motor or adjust stilts. Ground helical gears m page 352 ksh steel helical gears m2, 3 page 362 material type s s45c h helical gears k scm440 other information g ground gears direction of helix r no. Our product line boasts broad capabilities from the workhorse 3600 and a series to a wide variety of bulk liquid handling, high pressure, and severe duty pumps. Albany gear pumps are capable of operating up to 25 ft.
The prv can be piped back to the suction side of the pump or into the supply tank. External gear pump series g azpg22 fixed pumps v 22. Apr 12, 2016 there are three primary types of hydraulic pumps. Elika helical gear pumps the low noise, low pulsation, high efficiency gear pump reduces noise level by an average of 15 dba. E n g i n e e r i n g gear pump basics the external gear pump is a positive displacement pd type of pump generally used for the transfer and metering of liquids.
This pump type cannot run dry or handle abrasiveladen fluids, and places high shear on the. Fluid shall be carried between gear teeth and shall be displaced when the gear teeth mesh. Factory set gear pumpheads overview of gear pumps flow rates and models flow rates mlmin bar model page min. Internal gear pump eips2 type eips2 with constant displacement volume technical data. Displacement d the displacement of a rotary gear pump is the volume displaced during one complete. When using a gear pump a pressure relief valve must be fitted to protect the pump if deadheaded against a closed valve or blockage. 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. This understanding has evolved over the years until the terms metering and reciprocating pump have nearly become synonymous. Gear pump division kings mountain, north carolina usa 4 a parker pressureloaded gear pump consists of two, intermeshing, hardenedsteel, precisionground gear. Pump shaft transmits circular movement with own gear to other gear on inverse side. Study on flow characteristic of gear pumps by gear tooth shapes. The mk20s wide range of output flowspressure ratings of up to 3000 psi and. As the gears come out of mesh on the inlet side, liquid is drawn into the pump.
Roloid gear pump 1 introduction the roloid gear pump is robust, compact and versatile. Heat treated ductile iron helical gears provide silent, efficient long service life. Here are the advantages and disadvantages of a gear pump. The line of contact between two teeth is not parallel to the teeth but inclined. It may be calculated from the physical dimensions of the gears, or it. Manufacturer of precision helical gear pumps for a. The roloid gear pump is robust, compact and versatile. Elika helical gear pumps jbj techniques limited pdf. Internal gear pumps generate flow using a gear with externallycut teeth contained in and meshed with a gear with internallycut teeth.
Qx pumps use helical gears and are designed to reduce the amount of fluid borne noise generated by the pump and hence transmitted into the hydraulic system. Shaft alloy cover cast iron cover front pump middle pump. Constructed of castiron and hightensile alloy steel. Fluid shall be carried between gear teeth and shall be displaced when. Elika, marzocchis new gear pump is a perfect fit for all applications that require. Suitable for applications where the pressure is lower than. Gear pumps are commonly used for pumping lube oil, and they almost always have a strong vibration component at the tooth mesh frequency, which is the number of teeth on the gear times the rpm. This component will be highly dependent on the output pressure of the pump. The pump design and product range have matured over many years and in combination with radicon excellence, represents an. The flange mounted roloid gear pump is available as standard in 7 sizes 90 to 25 giving output flow rates between 3.
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