water ring

water ring

[′wȯd·ər ‚riŋ]
(mining engineering)
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Lot 1 supply chassis Delivery of a truck cab-chassis, 3-axis with steered trailing axle, technically permissible total weight: 28 t, diesel engine 440 hp, NMV power take-off, transmission-side PTO, short day cab,Lot 2 supply chassis structure: Combined high pressure flushers and Saugfahrzeugaufbau with water recovery plant, container contents at least 9 m3, pneumatic exhaust piston, high-pressure pump 175 bar / 130 kW, water ring pump 3 000 m3 / h at 400 mbar suction pressure, suction tray in cassette, telescopic combination hose boom, HD -Haspel DN 13 and DN 32, Central control station and radio remote control system, central lubrication system, hydraulic system, winter operation equipment, various storage boxes, max.
For example, in spite of a wide application scope, the market share of water ring vacuum pump shrinks gradually due to the restriction of environmental protection pressure; the dry vacuum pump rose sharply and performed well in 2012, and the high-end market is mainly dominated by enterprises from Europe, America and Japan.
They can be used as a replacement for oil-sealed rotary vane pumps and water ring pumps for example for load lock applications and vacuum network supplies or in kilolab and mini-plant areas.
Topics will include high speed, energy input (HSEI) twin screw extruder theory and design; comparison to low speed, late fusion (LSLF) designs; screw design and process techniques; techniques for dispersive and/or distributive mixing; sequencing of multi-stage process operations; devolatilization process techniques and practices; scale-up of the twin screw extrusion process; feeder and materials handling for pellets, powders and liquids; gear pumps and screen changers; pelletizing, including strand cut, water ring and underwater; direct extrusion for sheet, film, fibers and profiles; reactive processing; process troubleshooting; control and monitoring options; screw assembly and disassembly; and machine maintenance.
Gneuss says the design permits the processing of PET without pre-drying and requires only a water ring vacuum pump even for products with a high IV requirement.
Because of this, they offer clear savings in running costs, maintenance costs and installation space compared with liquid-based water ring pumps, oil-sealed pumps and steam ejector systems, as well as increased speed, process repeatability, flexibility and productivity.
4 ALLIMAND water ring vacuum pumps, of which 2 pumps with split tubing allowing use by half-pump on separated vacuum circuits.
Robert Llewellyn takes a look at the Thames Water Ring Main, an engineering marvel that keeps millions of homes supplied with fresh tap water.
The Thames Water Ring Main carries a billion litres of liquid daily, keeping millions of homes supplied with fresh tap water.
Excellent results can be obtained, even with a simple, water ring vacuum pump with 20mbar suction capacity.
Back then people had no choice but to undertake lengthy journeys by sailing ship - unless they decided to buy an inflatable water ring and go for a bracing paddle.
Features include: a Tuff Tube, water/air connection; 5,000 psi water hose, handles fabricated to the tube for easy maneuvering; water ring on bottom of tube with six jets boring inward to cut the soil and six jets boring outward to get the tube down; and bumpers on the bottom of the ring to protect lines and jets.