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JP2000314395A |
To provide a pump capable of reducing assembly man-hours and securing reliable sealing function by simplifying a structure through the reduced number of parts of a seal structure. In a pump force feeding water sucked from a suction port ...
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JP3108332B2 |
To ensure a large filtering area, and remove minute contamination by a method wherein a double cylindrical body of a cylindrical filter medium and an external cylinder, is installed in a suction structure with a built-in disk-shaped filt...
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JP3107967B2 |
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JP2000303983A |
To prevent air guided from the inside of a casing to the inside of an auxiliary tank from again entering the casing by providing a connecting port of the casing in an electric well pump with a partition plate for dividing the port into t...
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JP2000297791A |
To provide a volute pump reliably pumping water when an operation is started, easy to manufacture and having high quality by providing a priming faucet on an intake passage and a deaerating plug on a discharge passage, and forming the pr...
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JP2000297775A |
To provide an outside drive type self-priming pump which can operate at high head and at high efficiency even if small and can ensure a size accuracy in a simple structure. In a self-priming type pump 1 provided with a rotor 11 rotated a...
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JP2000297790A |
To provide a self-priming pump having a simple constitution, high self-priming performance, and a small size, and saving energy. This self-priming pump is provided with an impeller 1 pressurizing fluid flowing from an opening communicate...
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JP2000291581A |
To prevent leakage of air into a suction chamber at self-priming, and improve self-priming property by positioning a water feed port and a delivery port of priming on an upper part keeping a specified distance from the center of a pump i...
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JP2000291599A |
To prevent the occurrence of water column separation by means of quick suction with a simple structure, wherein one air valve and a one-way swirl current generation means are connected to a service pipeline, and relax the abnormal increa...
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JP3098978B2 |
To improve pumping performance without deteriorating self-priming performance, in a self-priming type centrifugal pump in which an annular priming action chamber is sectioned around a pipe wall of an axial flow sucking pipe line communic...
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JP3098864B2 |
PURPOSE: To provide a pullout-type self-priming pump of facilitating maintenance and inspection by Providing a shape and dimension such as mounting/removing a casing cover and a lower part casing from upward relating to a casing main uni...
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JP2000274389A |
To miniaturize the device with a small circulating quantity and energy saving by providing a circulating water passage for circulating a gas-liquid separated fluid to the suction port of an impeller, and providing a flow regulating means...
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JP2000274388A |
To minimize the water supply volume and improve the reliability even if foreign matter is present in water by providing a control means, so that a pump is operated when the water flow is detected by a fluid flow detecting means. When an ...
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JP3091816B2 |
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JP2000230494A |
To reduce the number of piping such as an intake pipe, improve power efficiency of a system by preferably applying heat releasing energy of a non-contact switching unit such as an electric motor and a triac so as to eliminate a coolant f...
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JP3079271B2 |
PURPOSE: To enhance the self-priming capacity of a self-priming pump and to enhance the maintenance property of the pump. CONSTITUTION: A pump unit 2 comprises a feed water pump portion 14, a self-priming pump portion 15 and a steam sepa...
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JP2000227086A |
To provide a self-priming pump which can reduce reflux quantity after completing self-priming and make the device small-sized. This self-priming pump is provided with a pressure chamber 4 taking in fluid in a water suction chamber 3 to w...
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JP3061524B2 |
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JP2000179487A |
To provide a superior cutoff effect at low cost by integrally forming a projection preventing a packing part from sticking out by a pump internal pressure and preventing the liquid in a pump from flowing to the outside in a check valve i...
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JP3054131B1 |
[wrap up] [Task] Provided is a water supply device having a dust removal function that enables easy maintenance and management of the pump, few failures, and quick start of the pump. A water supply device for supplying water from a natur...
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JP2000507324A |
PCT No. PCT/SE97/00393 Sec. 371 Date Sep. 22, 1998 Sec. 102(e) Date Sep. 22, 1998 PCT Filed Mar. 7, 1997 PCT Pub. No. WO97/36044 PCT Pub. Date Oct. 2, 1997Methods and apparatus are disclosed for degassing gas-containing fluid media in a ...
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JP3051659B2 |
To provide a priming device for a feed water pump not to need a steam separator. An air-assist part 20 for drawing outside air is provided in some part from a rotary vane pump 1 to its discharge port 9. The air assist part 20 is formed o...
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JP3068887U |
A pump housing has a plurality of chambers (34,52) formed therein, and a shaft (42) journaled within, the shaft having impellers keyed thereto. Each chamber has one of the impellers (32,60) disposed therein. One of the impellers (32) is ...
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JP2000130382A |
To provide good economy and to prevent the wasting of resources by realizing miniaturization and low costs by using a DC motor, and replacing a short-life constituting member. This centrifugal pump is housed in a cover 2, and provided wi...
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JP2000110797A |
To allow a valve guide to be easily housed in a valve case by using synthetic plastic to make the valve guide, fitting a C-ring to the valve guide on its outer periphery, using a casting for the valve case, and providing a groove in the ...
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JP2000104695A |
To vary a capability range as a swirl pump and to enhance self-suction capability.A suction chamber 1d communicated with a suction opening 1f is provided in a casing body 1 at its lower part. A peripheral pump part 4 is placed on the suc...
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JP3027186B2 |
PCT No. PCT/DE91/00449 Sec. 371 Date Dec. 28, 1992 Sec. 102(e) Date Dec. 28, 1992 PCT Filed May 27, 1991 PCT Pub. No. WO92/00449 PCT Pub. Date Jan. 9, 1992.A unit for delivery of fuel from the fuel tank to the internal combustion engine ...
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JP3022845B2 |
To provide a sand pump with enhanced suction ability with while preventing generation of cavitation even with a small diameter. Generation of cavitation is prevented by enhancing the suction ability by providing a sludge impeller 13 insi...
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JP2000073980A |
To provide a self-priming pump no allowing liquid flowing inside a discharge opening to be in a vortex flow. This self-priming pump 1 is composed of a tank room 18 equipped with a suction room 20 provided with a suction opening for sucki...
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JP2000064978A |
To realize a shortening of a self-priming required time and an enhancement of a pumping performance and to realize a small size and cost reduction. In a self-priming pump, a self-priming action for taking out an air in a suction hose 11 ...
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JP2000045899A |
To provide a device which has an improved pump characteristic at any of a high temperature discharge stage, a high temperature start stage, a normal temperature discharge stage and a normal temperature start stage, and which can reduce d...
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JP3007052B2 |
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JP2000027784A |
To suppress a temperature rise of a bearing part without affecting a pumping characteristic by providing a water storing part on a thinned part of a casing forming a channel for circulating water and communicating this water storing part...
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JP2000009080A |
To provide a method for preventing freezing of water remaining in a pump, which can prevent freezing of water remaining in the pump and also can certainly and smoothly carry out restart. When drain operation is started (S1), after water ...
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JP2996621B2 |
PURPOSE: To improve compact storing property, reduce a cost and improve the balance between self suction property and discharge property by arranging a mechanical seal between a coupling and a pump runner and forming the coupling with an...
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JP2998779B2 |
PURPOSE: To prevent the excessive operation by stopping operation of a vacuum pump in a full water state. CONSTITUTION: A full water state in a pump flow passage is detected by a full of water detecting device 21 arranged at the top part...
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JPH11351179A |
To prevent malfunction and improve operating reliability. A pump 21 has a suction port 23 and a discharge port 24 in the upper part of a casing 22 and an impeller 25 inside. On a flapper 28 arranged near the suction port 23 in the casing...
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JPH11343987A |
To lower noise at the time of a self-priming operation and shorten self-priming required time by intermittently supplying water plural number of times in a state that a self-priming operation is temporarily stopped after priming is fille...
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JPH11343988A |
To prevent an impeller from locking and prolong the time till eventual lock. A secondary impeller 4 is supported by a metal bearing 10, and a thrust washer 11a is installed in a place mating with the end face of the metal bearing 10 and ...
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JPH11336688A |
To increase the extent of self-priming efficiency as compared with the conventional technology in particular by making both the self-priming efficiency and the current pump efficiency in higher performance. A self-priming pump 1 is provi...
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JP2987571B2 |
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JPH11324966A |
To securely operate a flow switch arranged outside of a discharge port, and to eliminate the foreign matters caught between a partitioning plate and a rubber pad. A self-priming pump 1 is formed of a pump unit 6 formed by fixing a first ...
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JPH11324965A |
To provide the sufficient force for coupling a driving magnet and an impeller, to miniaturize a device, and to prevent the generation of low- temperature magnetism reduction. A magnetic driving pump 1 has a casing 2 for housing an impell...
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JPH11319433A |
To simplify the generation of vacuum and to perform the suction of water in a water supply pipe. This filter is provided with a housing equipped with a removable cover 12 for closing an inner chamber 13. Into the inner chamber 13, water ...
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JP2980339B2 |
A rotary hydraulic vane pump (12/78) includes a rotor (18) mounted within a housing (16), with a plurality of vanes (30) individually slidably disposed in corresponding slots (28) in the rotor periphery. A cam ring surrounds the rotor wi...
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JP2982179B2 |
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JPH11311194A |
To prevent advance of air toward a pump so as to prevent falling of water by arranging a closing valve for shutting out flow of air reserved in a delivery pipe side when a delivery valve is opened, in a direction perpendicular to a flow ...
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JPH11294368A |
To solve a problem in a self-priming pump, that when water is returned from the water tank part of a priming casing and a reflux chamber to the inside of the impeller chamber of an impeller casing through a communicating hole under a wat...
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JPH11287193A |
To surely perform air bleed and priming of a pump, automatically start the pump even in the case of starting the pump in emergency or at any time, and form a device small, compact and inexpensive. In a liquid pump device provided with a ...
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JP2964747B2 |
PURPOSE: To open a bypass circuit during self-priming operations to fill the inside of a pump chamber in a short time to reduce self-priming operation time as well as to close the bypass circuit during ordinary operations to shut off the...
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