Vane Pump

Vane Pump

 

a positive-displacement pump with reciprocating rotary motion of the operating member; it is used to pump fluids. The cylindrical housing of a vane pump contains a rocking rectangular vane with delivery valves, which acts like a piston, and partitions with inlet valves. Oscillatory motion is usually imparted to the vane by hand, and the fluid is sucked in and forced out. Double-action vane pumps have come into common use for pumping various fluids containing no abrasive contaminants (water, petroleum products, and so on) for short periods. They can deliver 2–12 m3/hr, with a head of 10–20 m.

Table 1. Most common varnishes and some of their properties
 Drying conditionsMaterial of substrateAdhesion of coating to metalConditions of use
 temperatureCtime (hr)   
1Dry upon addition of catalysts
2Dry upon addition of hardeners
3Reversibility of films is caused by the absence of reactive groups in the film-former (for example, a copolymer of butylmethyl acrylate with other acrylates)
Varnishes that form irreversible films Oil..................18-2024metalgoodindoors and outdoors
Oil-bituminous...........120-2000.5-2.0metalgoodindoors and outdoors
Alkyd ...............18-2080-16024-48 1–4metal metalgood goodindoors and outdoors
Polyester..............18-2060-7024 0.5-1.0wood_indoors
Urea-formaldehyde1 ......18-202wood indoors
Urea-alkyd............100-1301.0-1.5metalsatisfactoryindoors
Melamine-alkyd .........90-1300.5-1.5metalsatisfactoryindoors and out-
Phenol-formaldehyde (resol)18-2024metalsatisfactorydoors indoors at
Phenol-oil.............18-20150-18024 1–2metalgoodtemperatures up to 160°-170°C; in alkalies and acidsindoors and out-
Epoxy1 ..............150-1901-3metalgooddoors indoors at temperatures up to 160°-170°C; in alkalies and acids
Polyacrylic............80-1500.5-2.0metalgoodindoors and outdoors
Polyurethane...........18-202-24metal and woodgoodindoors and outdoors
Polyvinylacetal2.........18-203-5metalgoodindoors and outdoors
Silicone...............150-2001-2metalsatisfactoryat temperatures
Varnishes that form reversible films
Shellac (alcohol)...............18-202wood and glass-indoors
Bituminous (asphalt)...............18-203metalgoodindoors
Nitrocellulose .................18-201metal and woodpoorindoors and outdoors; in gasoline
Perchlorvinyl............18-20
60
1.5-3.0
1
metal and woodpoorindoors and outdoors; for short periods in acids and alkalies
Polyacrylic3 ............18-201-4metalgoodindoors and outdoors

Vane Pump

 

a type of a positive-displacement rotary pump whose working elements are a rotor, which rotates in an eccentrically bored stator, and vanes inserted in longitudinal grooves of the rotor and held against the stator by centrifugal force, springs, or the pressure of the liquid supplied from the direction of the rotor axle.

References in periodicals archive ?
The Vacstar's rotary vane pump creates a deeper vacuum, costs less, demands less horsepower and has a better tolerance for foreign material than blowers.
A Rotary Vane Pump Feed System gently portions product with minimal product working.
Pump makers are also working on quieter, more energy efficient pumps, including a new vane pump from Parker Hannifin GmbH (Kaarst, Germany).
Blackmer also offers its own LGL150 series sliding vane pump for autogas-handling applications.
launched the Flojet brand V-Jet series rotary vane pump heads at the 2013 National Restaurant Association (NRA) show in Chicago in May.
We offered the University two options, a liquid ring vacuum pump with partial seal water recirculation and the oil lubricated rotary vane pump," continues Andy Woods.
Monette Hancock and Qin Zhang, "A Hybrid Approach to Hydraulic Vane Pump Health Monitoring and Fault.
The Magnatex[R] MPT Series Regenerative Turbine Vane Pump is designed specifically for small flows at medium to high heads.
But Kasmer persisted, and his work with IBM gave him the idea of combining a dual-pressure vane pump with the continuous stainless steel belt design found in high-speed dot matrix printers.
Our conventional wisdom was to use centrifugal pumps; however, we had been studying the sliding vane pump and felt they could better achieve our 550-gpm load rate with a much higher efficiency than the typical centrifugal pump.
Through narrative, lists, graphs and a large cutaway of the T6CC double vane pump, the company explains how using its vane products results in increased product output and operating performance.
The Vickers Aerospace Marine Defense Group of Jackson, MS, was using T15 high-speed steel to fabricate vane pump rotors for aircraft fuel injection pumps by wire EDM.