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WO/1992/001293A1 |
A recirculation system (10) is disclosed for driving reactor coolant water in an annular downcomer (118) defined between a reactor vessel and a core shroud (12) spaced radially inwardly therefrom. The system supplies feedwater to the ves...
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WO/1992/001289A1 |
A reactor core (104) includes upper and lower matrices of fuel bundles. Fuel rods in the upper matrix (126) have their plenums oriented upward, while fuel rods in the lower matrix (124) have their plenums oriented downward. Refueling inv...
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WO/1992/001294A1 |
A drive (10) for positioning a control rod (12) in a nuclear reactor is disclosed. The drive (10) includes a housing (112) having a piston disposed therein, with a piston rod extending from the piston and through the housing for being jo...
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WO/1992/000440A1 |
A rotary disc pump (10) comprises an outer housing (12) with an inner cylindrical rotor chamber (14) having an inlet (18) at one end and an outlet (20) at its outer periphery. A rotor assembly in the chamber comprises at least two parall...
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WO/1991/019102A1 |
Liquid metals are centrifugally pumped from a static container (18) without the necessity for employing a mechanical impeller. A powerful rotating magnetic field surrounding the static container (18) causes the metal (24) to be rotated v...
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WO/1991/018209A2 |
A centrifugal pump has a shaft (10) mounted on bearings (11, 12) in a housing and carries a rotor (22, 23) which in use directs liquid to an oulet (25). A metal to metal seal (17) protects the bearings from the liquid being pumped. Coola...
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WO/1991/005168A1 |
A pump impeller (10) especially useful for moving heavy sediment and debris includes a drive plate (44) having a series of blades (52) mounted on one side thereof and radially extending from the center of the drive plate (44). Each of th...
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WO/1991/004099A1 |
An anti-flooding sewage grinder pump liquid level control system in a separately mounted canister is provided for installation within and controlling operation of a sewage grinder pump installed within a sewage collection tank (11). With...
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WO/1991/003649A1 |
The invention concerns a pump casing (1) for centrifugal pumps made from sheet metal, in which the impeller (2) is provided with an annular space (3). At the start and end edges (6, 7) of the outlet port of the annular space (3) are loca...
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WO/1990/015183A1 |
The present invention relates to a method of and an apparatus for separating heavy impurities from fiber suspensions in a centrifugal pump. The method and the apparatus of the invention are in particular suitable for the treatment of fib...
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WO/1989/012755A1 |
A turbine which delivers a solids-containing medium has a cavity (10) downstream of an impeller (2), which accommodates a shaft seal (7). An annular element (12) inside the cavity (10) protects the latter from wear due to erosion.
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WO/1989/007715A1 |
A centrifugal pump of the one-channel type where the rotor (11) is of the enclosed type with a transverse wall (20), which functions as a blade, has an opening (33) to counteract low pressure on the side of the wall (20) which is opposit...
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WO/1989/002534A1 |
A liner for a centrifugal pump of the type made from wear resistant metal is conventional made with a step (5) in the inner surface of the liner between the junction of the side liners (2 and 3) and the volute liner (1), because of the d...
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WO/1988/006240A1 |
The ventilator comprises a suction pipe (1) which forks into two pipes (2), which open into a cone (4), after which a fan wheel (8) is arranged. The fan wheel is driven by a drive shaft (5) which passes through the cone (4) to the exteri...
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WO/1988/005132A1 |
A pump (10) is provided within a vortex generator (35) having a plurality of equally spaced blades (52) which rotate in a pump (14) casing to form a nucleus of fluid in the shape of an ellipsoid (51) having an upper tapered end (51a) and...
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WO/1988/004733A1 |
A centrifugal pump (1) capable of accomodating entrained gas and vapour at low absolute suction pressures. The pump includes an impeller (6) mounted for rotation about an axis, the impeller having a central inlet chamber (12) with a peri...
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WO/1988/003230A1 |
When pumping dirty liquids, such as liquid manure, sewage and similar non-homogenous media, it is difficult to use the ordinary centrifugal pumps, because these often become clogged. Therefore, the capacity of the pumps must normally be ...
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WO/1988/002821A1 |
A centrifugal pump for hot media, in particular hot water, has at least one opening provided with an axial face seal (5) for a shaft that extends outside the pump housing (1, 2). The sealing space (9) is separated from the pump housing (...
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WO/1988/002820A1 |
A centrifugal pump impeller (1) comprising auxiliary vanes (3) located on one side surface thereof and joining an annular projection (5) extending around the periphery of the impeller, the vanes being further joined with at least one fur...
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WO/1987/005667A1 |
A cartridge or plug-in pump for use in a fluid holding receptacle such as an aircraft fuel tank (33). A pump housing (32) on the fluid holding receptacle has an inlet opening (40) to allow passage of fluid from the receptacle into the pu...
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WO/1987/003652A1 |
A device for pumping highly-viscous material, particularly thick oil, said device being adapted to immersion in the material and comprising a helical screw (8) and surrounding said screw a shell (9). In order to ensure the feed of the ma...
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WO/1986/005557A1 |
A pump or compressor unit (1) suited particularly for mixed phase fluids, e.g. mixed gas and oil, has a multistage axial flow compressor device with contra-rotating vanes. An upstream mixer device (10) and a downstream centrifugal impell...
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WO/1986/000542A1 |
In an apparatus for separating gas from a high consistency fibre suspension, the apparatus comprising a rotor chamber (2) containing a first rotor (11) provided with blades (10), a gas space (3) containing a second rotor (13) provided wi...
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WO/1985/005411A1 |
In conjunction with a hot metal pump in a reactive metal bath, a novel isolator assembly (3, 35) is provided which reduces the tendency of the pump to impart turbulence to the melt thereby reducing reaction between the melt and the atmos...
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WO/1985/002658A1 |
A rotary pump (10) for pumping liquid and solid materials carried in suspension therein. The rotary pump comprises an impeller (50) and a housing. The housing forms a swirl chamber (38) and an impeller chamber (40) for receiving the impe...
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WO/1985/001550A1 |
Apparatus (10) for pumping/pressurizing fluid materials such as viscous liquid polymers in which a shaft (16) is provided with one or more blades (18) which extend into and rotate in one or more annular channels (20). Inlet grooves (30) ...
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WO/1984/003126A1 |
A submerged pump (1) and an agitator (3), which are arranged spaced in relation to one another in the fluid to be pumped. The essence of the invention lies in that the agitator (3) performs periodical homogenization of the fluid (6) to b...
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WO/1983/002806A1 |
A centrifugal pump for liquids containing solid material, the impeller of which has two or several vanes. In a bottom projection the leading edge (3) of the impeller (1) vane (2) is curved backwards in relation to the rotating direction ...
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WO/1983/000184A1 |
Centrifugal pump (10) adapted for pumping finely particulate slurries, comprising a steel housing (12) having an inlet (26) and an outlet (32) and a volute (14) therebetween, a motor (18) mounted on the housing (12) and an impeller (16) ...
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WO/1981/002613A1 |
A pump, for example, a centrifugal slurry pump, has a casing (10) with an inlet (12) and an outlet (14). The casing (10) and a separate backliner (28) define a chamber (16) in which an impeller (18) is arranged to be rotated by way of a ...
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WO/1980/001095A1 |
Single vane impeller having particular application for pumping liquids having a high solids content has an axial feed inlet configuration and a centrifugal outlet configuration giving an impeller capable of outlet modification by cutting...
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WO/1980/000988A1 |
A considerable increase of the lifetime of metallic members, particularly the blades of fans or turbines, which are exposed to airborne abrasive particles is obtained by providing such members with a wear-resisting attachment comprising ...
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WO/1980/000471A1 |
A pump for pumping large solid articles includes a rotary pump having a plain disc impeller (28) disposed in a substantially cylindrical chamber (26) of a housing (24) with an inlet (54) coaxial of the impeller into the housing and an ou...
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WO/1980/000472A1 |
A pump for pumping fragile articles including fish and glasses without damage includes a rotary pump having a plain disc impeller (32) disposed in a substantially cylindrical chamber (26) of a housing (24) with an inlet (28) into, or coa...
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JP7495202B2 |
To provide a centrifugal pump having either one blade or one flow passage capable of reducing (deleting) fluid reaction force even if both size and orientation of fluid reaction force is varied.This centrifugal pump 100 comprises a pump ...
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JP7484691B2 |
To provide a seal insertion jig by which a worker can easily and correctly exchange a seal member such as a shaft seal part of a slurry pump even if the worker is not a skilled worker.A metal-made seal insertion jig for use in the exchan...
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JP2024055922A |
An object of the present invention is to improve the operating efficiency of a submersible pump device and appropriately discharge scum and the like from a sewage tank while ensuring a sufficient amount of water discharged from a pump bo...
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JP2024054983A |
An object of the present invention is to provide a pump impeller that can appropriately balance the impeller even when the impeller is processed, a pump using the impeller, and a method for adjusting the balance of the pump impeller. [So...
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JP2024514575A |
The blood flow pump device includes a centrifugal pump having a single ball-and-cup hybrid magnetic/blood immersed bearing impeller with a support shroud driven by a magnetically coupled motor drive. The device further includes a housing...
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JP2024035874A |
An object of the present invention is to provide a horizontal pushing device that can easily push and transfer various solid objects. A screw 1 is provided at the bottom of a hopper into which solids are placed so as to be perpendicular ...
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JP2024511147A |
The present application discloses an impeller assembly and mixing device, which relates to the technical field of solid and liquid mixing devices, and includes an impeller structure and a casing structure, the impeller structure includes...
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JP2024013447A |
An object of the present invention is to provide a dry motor pump device that prevents a propellant such as an oxidizer or fuel used in a rocket engine from entering an electric motor from a pump and can achieve high output with a small ...
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JP7424533B2 |
A non-clogging pump includes a pump casing and an impeller that includes a main plate portion and a vane portion, in which the main plate portion includes a main plate protrusion portion that protrudes in a counter-inflow direction, the ...
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JP2024006181A |
The present invention provides a pump device for liquefied gas that can efficiently cool an electric motor without leaking liquefied gas. [Solution] The pump device includes a pump 1 having an impeller 2, a rotating shaft 5 to which the ...
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JP7411201B2 |
To provide a pushing-in device capable of smoothly pushing-in a fluid and a pressure-feeding system comprising the pushing-in device.A pushing-in device 10 comprises: a hoper 20; a rotation member 30 having a shaft 32 and rotated about t...
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JP2024001547A |
A lightweight submersible motor pump device for transferring a propellant such as an oxidizer or fuel to a rocket engine is provided. [Solution] The immersion type motor pump device includes an impeller casing 11 having a pump chamber 15...
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JP7403179B2 |
Provided is a crushing member capable of preventing the crushing member from stopping due to foreign matter in sewage. The crushing member is mounted in a sewage discharge device for discharging sewage, and rotates to crush solids in sew...
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JP7396836B2 |
To facilitate assembly work of a liquid contact part in a vortex pump including split liners at the liquid contact part.A vortex pump 1 includes: a closed type impeller 10 having main blades 11 between a front side main plate 12 and a ba...
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JP7396839B2 |
To improve pump efficiency while securing non-blocking property.This suction screw 30 comprises: a cone part 32; a single main blade 34 integrally having a screw acting part 35 that is spirally arranged around the cone part 32 and protru...
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JP2023173562A |
To provide a method for starting other submersible pumps while preventing rotation of an impeller of a submersible pump that is not in operation among a plurality of submersible pumps connected in series.A method comprises: starting a su...
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