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JP2553551B2 |
Stalling of liquid ring pumps during start-up is prevented, without the need for a separate liquid pump or other means for initiating or sustaining the flow of make-up pumping liquid into the pump, by providing a bypass conduit for initi...
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JP2516619Y2 |
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JPH08291799A |
PURPOSE: To sufficiently enable correspondence in case of emergency by improving responsiveness for switching from preceding waiting operation to pumping operation. CONSTITUTION: When the water level of a water suction well 1 is reduced ...
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JPH08284867A |
PURPOSE: To provide a horizontal shaft pump serving satisfactorily even in time of emergency by improving the extent of transfer responsiveness from air operation (preceding standby operation) to pumping operation. CONSTITUTION: In oppos...
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JPH08284868A |
PURPOSE: To shorten a span of time till pumping operation is started as well as to make it conformable even to a sudden rise in a water level. CONSTITUTION: A suction chamber 8B of an ejector 8 is connected to a pump casing 5 via a sucti...
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JPH08284891A |
PURPOSE: To shorten a span of shifting time from air operation to pumping operation. CONSTITUTION: A position of an outlet end is set to a position of an inlet end of each of guide blades 11A, 11B and 11C as being displaced at a displace...
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JPH08284865A |
PURPOSE: To change operation style from air operating to pumping operation through simple control. CONSTITUTION: This pump is featured that an inverted U-shaped saddling part is formed in a discharge pipe 8 at the downstream side of a pu...
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JPH08284770A |
To reduce vapor lock to prevent an engine stall by providing a vent means inside a pumping means so as to be communicated with passages in an impeller in turn as the impeller is rotated, to make vapor escape from impeller pockets and a p...
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JPH08284866A |
PURPOSE: To eliminate generation of large vibrations and noises in this horizontal shaft pump while avoiding any no-discharge operation by loading one side or the other side of negative pressure and atmospheric pressure at the suction si...
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JPH08284875A |
PURPOSE: To improve the extent of changeover responsiveness from air operation to pumping operation and to cope with operation even in time of emergency by forming a weir being bulged in a pipe, where water stays behind, in time of the s...
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JPH08284864A |
PURPOSE: To shorten a span of time till the start of pumping operation to reduce the cost of production by making water stay in a staying part up to the level of more than the self-supportable water level of an impeller in an air operati...
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JPH08270596A |
PURPOSE: To improve the responsiveness by sharply shortening the time until drainage being started after the water level in suction well reaching the water level to start pumping, and to enable preceding standby operation. CONSTITUTION: ...
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JPH08270597A |
PURPOSE: To shorten the time until drainage being started after the water level in suction well reaching the water level to start pumping, and to enable preceding standby operation. CONSTITUTION: When the water level of a suction well 1 ...
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JPH08266785A |
PURPOSE: To extend the use life of a water suction pump and to improve the pumping efficiency thereof. CONSTITUTION: A washing machine main body 1 is provided with a water suction pump 7 and a water filling means 8. The water filling mea...
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JPH08270598A |
PURPOSE: To shorten the time until drainage being started after the water level in suction well reaching the water level to start pumping. CONSTITUTION: When the water level of a suction well 1 is at a level under the water level HWL to ...
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JPH08270591A |
PURPOSE: To improve the responsiveness by sharply shortening the time until drainage being started after the water level in suction well reaching the water level to start pumping, and to enable preceding standby operation. CONSTITUTION: ...
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JP2512701Y2 |
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JP2539643B2 |
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JP2537564B2 |
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JPH08247079A |
To provide an automatic priming non-submergence type hydraulic pumping device in which a priming is carried out simply and quickly. A liquid suction duct and liquid delivery duct are connected to a pump. The reciprocating vacuum pump 25 ...
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JP2528647B2 |
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JP2508030Y2 |
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JPH08210296A |
PURPOSE: To reduce cost and simplify constitution by a method wherein a selvage part protruding from the outer peripheral surface of a casing is formed on a partition plate disposed between a casing and a casing cover and a heat generati...
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JPH08177780A |
PURPOSE: To use central part negative pressure generated at impeller rotating time to suck water, and increase a flow rate to the impeller side by arranging a reflux passage to communicate an internal passage communicated with a supply p...
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JPH08177779A |
To degas by a simple configuration and with low noise by providing a liquid pump, having an inlet for fluid pulled into a closed pump housing and an outlet for pressure and a gas pump, having an inlet for gas pulled into a high position ...
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JPH0893676A |
PURPOSE: To reduce synthetic pressure variation and noises by allowing the pressure fluctuation near one communication hole when one blade passes one communication hole and the pressure fluctuation when the other blade passes the other c...
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JPH0826868B2 |
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JPH0861254A |
PURPOSE: To reduce a whole width by arranging a pump and a priming tank on both sides in the longitudinal direction of a base, disposing the pump on one side based on the central line in the direction of width of the base, and disposing ...
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JPH08501615A |
PCT No. PCT/CH94/00129 Sec. 371 Date Feb. 24, 1995 Sec. 102(e) Date Feb. 24, 1995 PCT Filed Jun. 24, 1994 PCT Pub. No. WO95/02768 PCT Pub. Date Jan. 26, 1995The impeller (1) is seated with its impeller hub (3) fixed for rotation on a sha...
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JPH082478Y2 |
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JPH0821393A |
PURPOSE: To provide a low cost and good performance of an automatic priming device for a pump by automatically adding priming water by means of the automatic falling of water in a hermetically sealed type tank and vacuum thereby generate...
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JPH0814185A |
PURPOSE: To realize advantages in efficiency and economy without losing reliability of equipment by providing a pump inside-air bleeding piping connected to a connection pipe side of a valve, equipped in a connection pipe air bleeding pi...
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JPH0755352Y2 |
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JPH0754635Y2 |
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JPH07117059B2 |
A pump with a priming circuit containing a valve having a seating with an orifice and an obturator mounted so as to be able to be applied onto the seating in front of the orifice, where the obturator is a resilient blade embedded on one ...
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JPH07317690A |
PURPOSE: To provide a circulation type water-cooled engine pump capable of effectively cooling a water-cooled engine during the pump shutoff operation. CONSTITUTION: This circulation type water-cooled engine pump is provided with a water...
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JPH07317691A |
PURPOSE: To improve safety at a low cost in a self-printing pump driven by fluid energy. CONSTITUTION: This fluid drive self-printing pump is provided with a drive impeller 51 using the forcefully circulated primary fluid as the drive so...
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JPH07111193B2 |
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JPH07107398B2 |
A centrifugal pump for separating an entrained gas from a working fluid in which the pump housing (1) has a hollow chamber therein, an axially extending inlet (3) into the chamber, an outlet leading out of the chamber, and a gas vent (15...
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JPH07301200A |
PURPOSE: To absorb vibration transmitted from an installation part for reducing noise by boring vibration absorbing slits to surround an installation device insertion hole at the installation part. CONSTITUTION: In an installation part 5...
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JPH0749034Y2 |
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JPH07286592A |
PURPOSE: To reduce noise while an impeller is rotating by forming a passage of a specified length in a communication hole for self-suction action provided in a partition wall provided between a pump casing and a casing cover, and setting...
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JPH07286593A |
PURPOSE: To improve moulding precision of a cylindrical shaft bearing part in a resin made pump casing structure in which plural reinforcement ribs are formed in an outer side surface of a back wall positioned on the motor side of a pump...
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JPH0744790Y2 |
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JPH07259782A |
PURPOSE: To simplify manufacturing processes of an air pressurizing device in an automatically liquid sucking pump, reduce a cost, and improve reliability. CONSTITUTION: An air pressurizing device for an automatically liquid sucking pump...
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JPH07253031A |
PURPOSE: To realize a pump for injecting fuel to a gas turbine engine at proper performance. CONSTITUTION: This pump is composed of a first centrifugal pump 4 arranged acting as an inlet step, a second centrifugal pump 14, and a hybrid p...
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JPH0786355B2 |
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JPH0781558B2 |
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JPH0776558B2 |
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JPH07208377A |
PURPOSE: To omit a lubricating water pump and a piping for a head tank by injecting water to a head tank for water injection to shaft seals and bearings by means of a vacuum pump at starting a main body pump, and injecting high pressure ...
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