Hydraulic gear pump and motor failure analysis and repair. Liquiflo gear pumps are manufactured from highalloy materials such as 316 stainless steel, alloyc and titanium, and a variety of corrosionresistant and wearresistant internal materials. While they are often used on thin liquids such as solvents and fuel oil, they excel at efficiently pumping thick liquids such as asphalt, chocolate, and adhesives. It is noisy in operation than either vane or piston pumps. They work with just one gear stage, and thanks to their. Liquiflo gear pumps can be configured with packing, single or double mechanical seals or magneticdrive. E series pumps are interchangeable with up to 95% of the packed, mechanically. Replacing an existing pump with an e series requires no modifications to piping, driver, baseplate or coupling, while keeping flow rates unchanged. For example, in a pump design, the number of gear teeth in the inner and outer gears is 10 and 11, respectively. Hydraulic pumps of type pgf are leakage gapcompensated internal gear pumps with constant displacement. Parker gear pumps power dense design produces an energy savings and provides oems a marketable advantage to improve revenues.
For viking pumps, the material choice refers to the pressure containing component of the pump the externals of the pump, like the casing. Easytouse and compact because it is an internal gear type pump, it is easytouse, ideally compact and light in weight compared to other pumps of the same capacity. Eaton external gear pump gd5 series epugecc001e december 2014. The inner gear would turn 11 revolutions, while the outer would turn 10. Internal gear pumps are primarily used in nonmobile hydraulics e. Gear pump working, construction, maintenance marinersgalaxy. Selection of a positive displacement pd rotary pump is not always an easy choice. An internal gear pump works on a similar principle except the two linking gears sizes are different with one revolving within the other. They are compact, relatively inexpensive and have few moving parts.
The internal design is seen as being reliable, easy to operate and maintain due to only two moving parts being present. Types of gear pump internal, external,gerotor, lobe pump gear pumps gear pump is a robust and simple positive displacement pump. General gear pumps and gear motors technical information. As your technology advisor and provider for missioncritical jobs, we take on the toughest challenges in the industrial, subsea and mobile industries. Topgear mag is a range of leakproof internal gear pumps for low and high viscous liquids which are corrosive, toxic, aggressive or expensive. Topgear mag magnetic drive internal gear pump johnson. I mean because of the close clearance between the casing and the teeth of the gears, pressure is developed and we get the pressurized fluid at the end.
You can combine groups 1, 2 and 3 to make multistage pumps. The rotor is a larger gear and also an inner gear, and it has the teeth projecting inside. Group 2 gear pumps technical information group 2 gear pumps technical information model code type snp 2 standard gear pump skp 2 high torque gear pump shp 2 high pressure gear pump sni 2 gear pump with internal drain relief valve sne 2 gear pump with external drain relief valve valve omit when not used. Our equipment is also constantly refined by our quest for ultimate hydraulics that combine great power with flexible motion control. The qx pumps are the 5th generation of bucher internal gear pumps, which have proven themselves in thirty years of service around the world. Gear pumps are invariably of fixed displacement type, which means that the amount of fluid displaced for each revolution of the drive shaft is. There are several gear pump pdf books available in market. Hydraulic gear pump and motor failure analysis and repair guide. The rotating gears develop a liquid seal with the pump casing and create suction at the pump inlet. We serve customers just like you at facilities, manufacturing sites, and distribution centers throughout the americas, europe, africa, the middleeast and asia pacic. Decades of design improvement have resulted in high volumetric efficiency. Magnetic drive available as the system, from over pressure. At oilgear, we make historically good pumps, valves and engineering systems.
Highpressure internal gear pumps machines that run rarely seen, but hard at work in countless machines, voith turbo internal gear pumps reliably provide high pressures. Gear pump basics slip s the slip is the quantity of fluid which leaks through internal clearances of a pump per. Overview sauerdanfoss gear pumps and motors are ideal for a wide range of applications for. Most pd pumps can be adapted to handle a wide range of applications, but some types are better suited than. A gear pump uses the meshing of gears to pump fluid by displacement. Parker is a global manufacturer of hydraulic pumps, transmissions, gear pumps and motors, engineering superior products for a wide variety of applications. On demand, we can provide external gear pumps which are api, atex,trcu 10, trcu 12 and ta luft compliant. External gear pumps, gear pump working principle roto. These products are designed to satisfy global customer. For detailed information on a particular product, please consult the specific technical manual for that product. Some internal gear pumps have an additional, crescentshaped seal shown above, right. What is an internal gear pump and why do you need it. They are mainly used in the plastic and sheetmetal processing sectors, presses as well as conveying and lifting equipment.
Gear pumps use the actions of rotating cogs or gears to transfer fluids. Topgear, internal gear pumps johnson pump pdf catalogs. It is dependent upon the internal clearances, the differential pressure, the. Medium pressure series pgi100pgi101pgi103 internal gear pumps, medium pressure range. External gear pump design, advantages and disadvantages. The original title of pumping was shortlived, being soon supplanted by the paneuropean pumps, pompes, pumpen in 1965 as the magazine linked up.
The available versions are suitable for all those applications requiring an oil transfer pump with high suction capacity in order to transfer fluids with mediumhigh viscosity. This feature considerably improves the control of the pump and also reduces noise emissions by up to 6 dba. This fine clearance is the main object of concern in this pump. The useful viscosity range of an internal gear pump. Sophisticated technol ogy, robust design and costefficient operation have convinced thou sands of customers to trust voith. The casing of the pump is as important as the gear. The thrudrive feature allows an independent piston or gear pump to be. Keep this manual carefully at hand so that it can be consulted at anytime when operating, inspecting or maintaining the pump. Leading technology, global capacity you may know colfax best by our strong legacy brands that include imo, imo ab and allweiler. Types of gear pump internal, external,gerotor, lobe pump. Alternative designs, such as internal gear pumps, can serve applications that demand more than what external gear pumps can deliver without the expense of axialpiston pumps. Zeilfelder gear pumps and rotary lobe pumps api, crtu 1012.
Internal gear pumps options s haft s eal option s shaft seal options include packed gland, single and double mechanical seals, builton safety relief valves protect the pump, as well cartridge seals. It has two meshed gears revolving about their respective axes. External gear pump design, advantages and disadvantages gear pumps are less expensive but limited to pressures below 140 bar. When the pump is used bidirectionally, a double safety relief valve is available. With our standard internal gear pumps we offer a cost effective alternative solution to cover standard applications. The design of external gear pumps allows them to be made to closertypically used for high tolerances than internal gear pumps. Unique internal pressure lubricated idler pin reduces wear by continuously cooling and lubricating the idler pin and bushing. The pumps are ideal for use with variable speed drives over a very wide speed range and for operation in reverse mode. You may already appreciate the nachifujikoshi reputation for compact equipment that delivers energy efficiency, safety, and high performance. The gears themselves are lubricated by the fluid, which is of a lubricating nature.
We have medium pressure and highpressure pumps in our product portfolio. Review different pump types commonly used understand the difference between centrifugal pumps and positive displacement pumps understand the working principle of the tuthill. A minor external gear is mounted, and this is mainly designed for linking by the rotor so that the teeth of the gear. Instruction manual topgear gs internal gear pumps read and understand this manual prior to operating or servicing this product.
An internal gear pump uses internal and external gears figure 2, below. Total containment of the liquid inside the pump is achieved using a hermetically sealed can, which isolates the liquid from the surrounding environment. This is an animation video on the working of an internal gear. Oil pumps internal gear pumps trp 2 features applications specification items features low cost low cost compared to other positive displacement type pumps. A gear pump is a type of positive displacement pd pump. Iph catalog, highpressure internal gear pumps fluid dynamics. The pump is not very forgiving ofapplications such. Specifications for the snp1, sep1 and skp1 group 1 gear pumps. En 624 kb sauerdanfoss group 1 gear pumps catalogue en. Tandem and multiple pumps are available worldwide in more than variants. Do not carry out operation, inspection or maintenance of the pump until you read this manual and understand the content. Voith internal gear pumps feature very low pressure pulsation usually up to 50 percent less than other comparable internal gear pumps.
Internal gear pump with detail explaination and animation in this video, you will learn about an internal gear pump working process. Internal gear pumps can be used up to a continuous pressure of 315 bar 4550 psi depending on the frame size. This pump principle features a compact design with particularly high energy density. Numerous improvements have been made to the straightforward and robust design. The straightforward and rugged construction guarantees long service life without the need for extensive maintenance. Viscomat gear viscomat gear is an oil transfer pump, available in the singlephase and threephase versions. Internal gear pumps have one or two fewer teeth in the inner gear than the outer one. Low pressure pulsation with voith pumps and internal gear. Cast iron this is the economical wide range of noncorrosive applications material option. Delivering unsurpassed quality and performance, parkers extensive line of hydraulic pumps and motors helps you select the right product for your hydraulic application. Useful information on internal gear pumps what is an internal gear pump. The internal gear pump is exceptionally versatile and also capable of handling thick fluids.
618 1571 45 706 534 1310 1233 1568 346 1434 58 883 1304 1379 165 1490 861 72 289 1426 1069 167 503 1340 885 1464 898 822 1189 996