![]() Particle size pumped can be much larger in lobe pumps than in other positive displacement types. Lobe pumps are frequently used in food applications because they handle solids without damaging the product. ![]() A lobe pump itself does not compress the material it pumps. If the discharge port is restricted - such as discharging a large volume of air into an engine's intake manifold - then pressure is created in the discharge space. Continued pumping forces the pumped material out through the outlet port. Finally, the meshing of the lobes on the discharge side of the pump prevents the pumped material from returning to the inlet side. The material travels around the interior of the casing in these enclosed volumes between the rotor's lobes and the casing - it does not pass between the lobes.ģ. Rotation of the lobes past the inlet port creates enclosed volumes of material between the rotors and the pump casing.Ģ. Material to be pumped (liquid, or gas, possibly containing small solid particles) flows into this cavity. As the lobes come out of mesh, they create an expanding volume on the inlet side of the pump. Lobe pump is one of the Positive Displacement Pump rotary type.ġ. Pump shaft support bearings are located in the gearbox, and since the bearings are out of the pumped liquid, pressure is limited by bearing location and shaft deflection which reduces the noise levels of this pump. Lobe contact is prevented by external timing gears located in the gearbox. Unlike external gear pumps, however, the lobes do not make contact. Lobe pumps are similar to external gear pumps in operation in that fluid flows around the interior of the casing. Flow is relatively independent of changes in process pressure, too, so output is relatively constant and continuous. They also offer continuous and intermittent reversible flows and can operate dry for brief periods of time. A gentle pumping action minimizes product degradation. If wetted, they offer self-priming performance. Rotary pumps can handle solids (e.g., cherries and olives), slurries, pastes, and a variety of liquids. Lobe pump (5m³/min or 1886 barrel/h) of THW They are popular in these diverse industries because they offer superb sanitary qualities, high efficiency, reliability, corrosion resistance and good clean-in-place and steam-in-place (CIP/SIP) characteristics. Lobe pumps are used in a variety of industries including pulp and paper, chemical, food, beverage, pharmaceutical, and biotechnology. ![]() An early example of a lobe pump is the Roots Blower, patented in 1860 to blow combustion air to melt iron in blast furnaces, but now more commonly used as an engine supercharger. It is similar to a gear pump except the lobes are designed to almost meet, rather than touch and turn each other. JSTOR ( January 2019) ( Learn how and when to remove this template message)Ī lobe pump, or rotary lobe pump, is a type of positive displacement pump.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. Stores the user's video player preferences using embedded YouTube video.This article needs additional citations for verification. Registers a unique ID to keep statistics of what videos from YouTube the user has seen. Tries to estimate the users' bandwidth on pages with integrated YouTube videos. Used by Google AdWords to re-engage visitors that are likely to convert to customers based on the visitor's online behaviour across websites. Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user. Used by Google Analytics to throttle request rate Used by Google Analytics to collect data on the number of times a user has visited the website as well as dates for the first and most recent visit. Registers a unique ID that is used to generate statistical data on how the visitor uses the website. Tracks the visitor across devices and marketing channels. Used to send data to Google Analytics about the visitor's device and behavior. Preserves user session state across page requests. Stores the user's cookie consent state for the current domain The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third party advertisers. Marketing cookies are used to track visitors across websites.
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