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Topic: Helical pump

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Progressive cavity pump

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	Selecting an irrigation pump
		Since turbine pumps are most often used for pumping from bores, there is a limit on impeller diameter and the pressure which can be developed at a given speed.
		Helical rotor pumps are single screw pumps consisting of a rigid screw-like rotor rolling with a slight eccentric motion in a resilient internal rubber lining (stator).
		Pump duty is the basis of pump selection, and is the performance required of the pump.
	www.agric.nsw.gov.au /reader/pumps/e58.htm (2349 words)

	External Gear Pumps
		External gear pumps are a popular pumping principle and are often found in lubrication pumps in machine tools, in fluid power transfer units, and as oil pumps in engines.
		Helical and herringbone gears typically offer a smoother flow than spur gears, although all gear types are relatively smooth.
		External gear pumps are similar in pumping action to internal gear pumps in that two gears come into and out of mesh to produce flow.
	www.pumpschool.com /principles/external.htm (539 words)

	United States Patent Application: 0040097995
		At the same time another pump (also to be described later) of the debris removal sub-system 30 is operated to aspirate the particles produced during the revascularization procedure along with the infusate liquid and some blood.
		In particular, the perfusate liquid is pumped by pump 108 and associated conduit 122 through the hollow interior of the guide wire 124, so that it passes through the apertures or ports 140 in the support tube 136 to inflate the balloon 126 to the state shown in FIG.
		The extraction pump 90 is then operated to evacuate any debris particles which may have been produced by the passage of the guide wire 124 and balloon 126 through the restriction and by the inflation of the balloon 126.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1="20040097995".PGNR.&OS=DN/20040097995&RS=DN/20040097995 (16848 words)

	Dankoff TSP1000 Pump
		The helical rotor mechanism has but one moving part, a hard chrome-plated rotor that revolves inside of a rubber stator.
		The controller starts and runs the pump in low light conditions and yields the most possible water from varying sun conditions.
		Pump installation is identical to that of a conventional AC submersible pump, using either rigid or flexible drop pipe.
	www.thesolar.biz /dankoff_tsp1000_pump.htm (377 words)

	Denorco \| engineered pumping solutions (Site not responding. Last check: 2007-10-20)
		The Jacuzzi range of centrifugal submersible pumps for boreholes (manufactured under license in South Africa) is suitable for the full spectrum of down-the-hole pumping duties.
		The axial flow pump has become the pump of choice for those who have to move large volumes of water at relatively low heads.
		Denorco is reputed for manufacturing world class pumps that are leaders in their various applications and has, over the years...
	www.orbitpumps.com (315 words)

	Helix and Spur Gear Pump - Engineers Edge (Site not responding. Last check: 2007-10-20)
		In a helical gear, the point of engagement moves along the length of the gear tooth as the gear rotates.
		The herringbone gear pump is also a modification of the simple gear pump.
		Its principal difference in operation from the simple spur gear pump is that the pointed center section of the space between two teeth begins discharging before the divergent outer ends of the preceding space complete discharging.
	www.engineersedge.com /pumps/helix_spur_gear_pump.htm (231 words)

	Helical pump (Site not responding. Last check: 2007-10-20)
		A helical pump is one that is designed in a spiral or helix fashion.
		It consists of two parts: a twisted tube whose cavity is shaped like a curly noodle, and a helical rotor.
		The rotor turns inside the tube in such a way that one point along the helix is at the edge of the cavity, and the opposite point is at its center.
	www.sciencedaily.com /encyclopedia/helical_pump (147 words)

	Progressive cavity pump -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-20)
		A progressive cavity pump is a kind of (A mechanical device that moves fluid or gas by pressure or suction) pump which moves fluid by means of a cavity which progresses along the body of the pump.
		Compare to a (Click link for more info and facts about Archimedes' screw) Archimedes' screw and a (Click link for more info and facts about helical pump) helical pump.
		Pumps of this type are often known as Mono pumps, after one of the major manufacturers -
	www.absoluteastronomy.com /encyclopedia/p/pr/progressive_cavity_pump.htm (187 words)

	Turbex Rotary windmill Principle (Site not responding. Last check: 2007-10-20)
		The Turbex uses a modern type pump called a helical rotary pump that is driven by the wind.
		This pump rotates whilst the traditional pump operates with a reciprocating (up-and-down) motion.
		Even the smallest Turbex will maintain a pumping rate of 1000 litres/h over a distance of 15 km in a typical windspeed of 20 km/h using a 40 mm pipeline.
	www.turbex.co.za /Turn_Pump.htm (225 words)

	Helical gear pump
		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.
		The pumping gears in this type of pump are driven by a set of timing and driving gears, which also function to maintain the required close clearances while preventing actual metal-to-metal contact between the pumping gears.
		Metallic con-tact between the teeth of the pumping gears would provide a tighter seal against leakage; however, it would cause rapid wear of the teeth because foreign matter in the pumped liquid would act like an abrasive on the contact surfaces.
	www.tpub.com /engine3/en33-27.htm (215 words)

	ALPHA HELICAL PUMPS - PROFILE
		ALPHA HELICAL PUMPS, a partnership firm, was established in 1989 by a team of competent engineers with vast expertise in Screw and Helical Pump technology.
		ALPHA HELICAL PUMPS an ISO (9001:2000) company is a part of the prestigious ALPHA GROUP OF COMPANIES based in the industrial city of coimbatore, INDIA is engaged in the activity of manufacturing of Single Screw Pumps and ISO2858 Centrifugal back Pull Out Pumps.
		Alpha Manufacture Pumps that are specially designed to the customer's specifications, ranging from the pumping of clear fluid to fibrous or even highly corrossive fluids such as Phosphoric acid.
	www.alphapumps.com /profile.html (434 words)

	Helical Gear Pump
		is in the herringbone gear pump; therefore, the
		The pumping gears of this type of pump are
		of the pump, between the suction (inlet) and
	www.tpub.com /content/engine/14105/css/14105_51.htm (212 words)

	Water Delivery Systems (Site not responding. Last check: 2007-10-20)
		Combine this with the fact that the pump does not require an expensive controller, includes dry-run protection and there is absolutely no startup surge, you have the prefect pump for RE installations.
		As the pump goes through the startup sequence it verifies that is is indeed in water and evaluates the power available, it then starts slowly testing the power supply until it reaches a maximum speed 3000 RPM or a maximum of either 900 watts or 7A current draw.
		Even if the pump is oversized to the capacity of the well it doesn't matter, the pump will simply shut down and wait a few minutes for the well to refill before it resumes pumping.
	www.oregonlodge.com /PumpSwap.html (794 words)

	Grundfos SQFlex Pumping Systems
		There are 7 pumps in the SQFlex line, 3 feature a 3" diameter positive displacement helical rotor pump head which is best suited for deep well low volume requirements and 4 feature a 4" centrifugal pump head which is best suited for low head high volume requirements.
		These pumps are so durable and reliable that they don't need to be pulled for servicing every 2-3 years like some diaphragm pumps, just set it and forget it.
		It communicates with the pump via the power supply wires and is able to provide alarm indications for dry running, lost connection to pump, over voltage, over temperature and overload.
	www.pvsolarpumps.com /grundfos_pumps.html (646 words)

	Low Oil Pressure
		I'd start with the oil pump since it sounds to me like the oil pump relief valve is sticking open or the spring is weak.
		The Melling replacement pumps sold by virtually all flathead suppliers is the short body pump with helical gears.
		The short body pumps I use are about 4 5/16'' from mounting flange to outside of gear cover and over 7'' to bottom of pickup.
	www.btc-bci.com /~billben/lowoil.htm (1150 words)

	Pumps (Site not responding. Last check: 2007-10-20)
		The helical rotor pump operates like an auger to force water up through the pump.
		Water can be pumped from depths of up to 1000 feet and well casings can be 4 inches or larger in diameter.
		Helical rotors produce a smooth and even flow, and they are easy to frost proof.
	negative-pressure.net /water_6.html (107 words)

	Grundfos Pump SQFLEX
		All pumps are fitted with the same size motor which, together with the new sizing tools, makes system sizing simple
		A user-friendly interface box that maintains two-way communication with the pump and monitors the operating conditions.
		With a level switch inside the storage tank connected to the CU 200 control unit, the pump knows when the tank is full and shuts itself off.
	www.solarcellsales.com /products/SQFLEX.cfm (220 words)

	Get Gear Pump Information Here
		Pump manufactures positive displacement pumps and accessories for industrial and sanitary pumping applications.
		Investigation of the pump characteristic of a gear pump.
		Pump School is an introduction to positive-displacement (PD) pumps feel like it.
	www.just-pumps.com /Gear-Pump.html (209 words)

	EcoVantage Catalog: Submersible
		PS1200 eliminates the weakest links in solar pumping by using helical rotor (progressing cavity) and centrifugal pump ends and a brushless and water-filled motor.
		PS600 eliminates the weakest links in solar pumping by using helical rotor (progressive cavity) and centrifugal pump ends and a brushless and water-filled motor.
		LVM pumps are constructed of polyacetal plastic, enabling them to pump almost any liquids.
	www.ecovantageenergy.com /catalog/subcat145.htm (176 words)

	Low Cost Wind Power (Site not responding. Last check: 2007-10-20)
		Pumping distances of 10 miles (16 km) can easily be achieved.
		A study was done to compare the various water pumping systems with each other.
		The capital outlay for a Turbex is significantly lower that that of a conventional windmill.
	www.turbex.co.za /RotaryWindmill.html (1208 words)

	SOLAR SALES Renewable Energy : Water Pumps Western Australia - Submersible Water Pumps - Surface Pumps - Bore Water ... (Site not responding. Last check: 2007-10-20)
		Solar Sales recommend and sell only the most energy efficient range of pump/motor units to ensure peak performance at the lowest cost.
		Our submersible range of bore hole pumps use a positive displacement helical rotor pump coupled to a DC brush-less motor with an efficiency grater than 90%.
		The submersible pump sets will fit down a 4" (100mm) hole and dry run protection is built into each unit.
	www.solarsales.com.au /eta_minisubmersible.html (232 words)

	Dankoff solar ETAPump submersible pumps
		There are several different pumps within the ETAPump family depending on your daily volume requirement and total dynamic head (TDH).
		Most of the ETAPump systems feature the new helical rotor pump head, but for shallow well applications with a high volume demand, a centrifugal pump head can be attached to the motor.
		Not included in these systems is the SCH40 steel pole and concrete to mount the solar array, drop pipe, submersible pump cable and pump safety rope.
	www.pvsolarpumps.com /DankoffETA.html (354 words)

	Solar Powered Water Pumping
		A solar pump, produces the most water when it is needed the most -- when the weather is sunny and dry!
		They specialize in pumps with DC motors since they are more efficient than AC pumps.
		Some of Their pump models can be ordered to operate off AC power for situations where utility or generator power is available but efficiency is paramount.
	www.partsonsale.com /solarpumps1.html (580 words)

	Gear Pumps (Site not responding. Last check: 2007-10-20)
		Pump housings are of close grain cast iron.
		The 3-Section design of the Albany Pump combined with the unique slide fit of the bearings makes disassembly of the pump and replacement of individual components easy and simple.
		By-pass model pumps (integral relief valve) can be converted to plain pumps (no by-pass) by interchanging pump covers (and vice-versa).
	www.albanypump.com /pumps/gear-pumps (131 words)

	EA Energy Alternatives Ltd. - Item Description Page
		Solar Direct Water Pumping can be the perfect solution for rural houses and farms where the cost of bringing power to a site is going to be prohibitive and sending a person out to the site day after day is not feasible.
		A solar direct system does not contain any batteries, instead it pumps only when the sun is shining and, generally, fills a reservoir that provides water through the dark times while the pump is not pumping.
		The SQFlex pumps have created a whole new realm of possibilities in deep well pumping as their power consumption is far less then standard well pumps.
	energyalternatives.ca /amazing/go.asp?ic=WATER2&ItemType=CK&agent=EA (423 words)

	TSP-1000F Submersible Pump from Dankoff at whosesale prices. - TSP1000 deep well pump uses solar-electric power to pump ...
		The pumps were aquired by international competitive bidding.
		Its exceptional efficiency enabled it to be operated with 8 solar panels only, where other pumps required 16 solar panels to produce the same water output.
		The TSP 1000 pumps have been supplying water for 3 years for school sanitation.
	www.altenergystore.com /cart/570.html (802 words)

	deep well water pumps (Site not responding. Last check: 2007-10-20)
		Deep well turbine pumps are adapted for use in cased wells or where the water surface is...
		The inherently slim design of the eccentric helical pump appears to make this type of pump to be attractive for delivering water from deep wells, as compared with multistage centrifugal pumps.^The basic shape of the volume flow-head (V-H...
		Goulds Pumps, manufacturer of water pumps, sump pumps, deep well pumps, pool pumps, submersible pumps, pond pumps, hydraulic pumps, circulating pumps, fountain pumps, self priming pumps, sewage pumps, industrial pumps, high pressure pumps,...
	www.aquariumresources.info /deep-well-water-pumps.html (585 words)

	Orbit Pumps Limited - power pumps
		The largest progressive cavity helical rotor power pump range in the world
		The power pump range is suitable for high flow and high head water transfer duties, spray irrigation, stock watering, domestic
		Orbit's range of power pumps for water applications is suitable for flow rates of up to 95m3 per hour and discharge pressures of up to 30 Bar.
	www.orbitpumps.co.uk /power.asp (82 words)

	Sling Pump (from Internet Glossary of Pumps)
		The Sling Pump, with only one moving part, is a modern application of an Archimedes Snail Pump.
		A helical intake coil is wrapped around and around the inside surface of a cone.
		The pump floats partially submerged, being largely of plastic, with aluminum propeller blades and bouyant styrofoam in the nose.
	www.animatedsoftware.com /pumpglos/gl_sling.htm (278 words)

	Mono Pumps: Sun Ray
		The Mono Pumps Sun-Ray solar pump has been designed to transfer surface water with the same efficiency and reliability as other Mono solar pumps.
		The highly efficient, helical rotor pump is inherantly self-priming, as such the pump can be positioned up to 6m above the water source, allowing the pump to be installed on the top of dam walls or on river-banks above the high water mark.
		The Sun-Ray is suitable for pumping water from springs, rivers, tanks and dams, it is available with a floating pontoon that has been designed to safely enable the pump to float on a dam or other water source.
	www.mono-pumps.com /mono/product.nsf/p/SunRay_ (294 words)

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