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JP3125533B2 |
PURPOSE: To provide a barrel casing type turbine pump where noise can be reduced at a specific rotating speed. CONSTITUTION: A water extracting chamber 9 and a discharging chamber 10 are divided via a vibration insulating member 11 inter...
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JP2001012393A |
To reduce the number of part items to improve the assembling property of a multiple stage pump in a guide blade provided within the multiple stage pump by forming a ring-like stepped collar part in a protruding state on the circumferenti...
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JP2000356199A |
To always hold high efficiency by decreasing generation of a hydraulic power loss even in increasing ratio of an outlet width of an impeller to an inlet width of a diffuser.This pump combines an impeller 1 of impeller outlet width Bi sma...
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JP2000297774A |
To update the radial seal gap section between an impeller and a casing easily and quickly at a low cost by forming a seal ring with a plastic material, and mounting the seal ring on the casing via snap connection. A seal ring 54 is arran...
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JP3095304B2 |
A process for producing a vinyl chloride-based polymer by suspension polymerizing vinyl chloride monomer or the like while circulating a reaction mixture in a polymerization vessel by a circulating pump through a circulation line led out...
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JP2000262404A |
To provide an inexpensive, compact pump structure for a hot-water supply device with excellent performance of pouring hot water, with a simplified structure by reducing the number of parts, and with high dependability. A reciprocally rot...
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JP3090818B2 |
PURPOSE: To realize cost reduction by applying a balance disk mechanism to attain stable balance holding force and to improve pump efficiency, and in addition, by forming an internal circulation system to improve reliability. CONSTITUTIO...
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JP2000249090A |
To suppress the generation of excessive torque resulting in breakage of a main shaft in a transient state that an impeller thrust is rapidly increased. In a discharge casing 5, a first balance bush 25 is fixed in a position being the out...
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JP3078956B2 |
PURPOSE: To provide a non-seal type all-round flow canned motor pump silent, compact, able to cope with essential points in a wide range and excellent in productivity enabling the integration of machine type. CONSTITUTION: An all-round f...
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JP2000227084A |
To improve efficiency of a centrifugal of specific speed under 100 (m, m3/min, rpm). By setting the ratio of the inner diameter of a liner ring to the outer diameter of a impeller inlet to be over 1.033 or favorably about 1.117, flow con...
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JP3063208B2 |
PURPOSE:To fulfill a pumping function for generating centrifugal force in an annular passage by moving a sphere rolling in the annular passage formed in a pump housing by a magnet magnetically connected thereto. CONSTITUTION:A sphere 3 i...
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JP3057166B2 |
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JP3052199B2 |
To reconcile an increase in the strength and a decrease in the weight of a device and to reduce the cost while eliminating the cutting work of a casing so as to reduce the number of parts items of the casing. In this pump, plural impelle...
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JP2000154795A |
To restrain occurrence of seizure due to metallic contact between a disc surface of a balance disc and a stationary member fixed on a casing in a transient state where a thrust load suddenly increases.One end of a first channel 7 formed ...
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JP2000145697A |
To dispense with processes of a precise finishing for stepping an outer casing inside diameter face and a specific stage used for stepping part of the outer casing inside diameter face by providing a member connecting the outer casing to...
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JP3045036B2 |
PURPOSE: To enable fixing of a drain hose on a casing easily by allowing the positioning of a drain hose without fixing it on a side plate of the casing. CONSTITUTION: A drain pump 2 is fitted into a recess part of a drain pump mounting ...
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JP2000130392A |
To surely fasten impellers and dispense with a key or reduce the use of the key by forming the serrations on the hub inner diameter parts of the impellers and an outer diameter part of a rotary shaft, and fastening the impellers to the r...
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JP2000130400A |
To prevent the generation of stress or the leakage of internal liquid by causing a through-bolt for fastening a easing to follow up even the thermal expansion/shrinking of the easing accompanying the sudden increase/decrease of the tempe...
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JP2000120588A |
To forcibly fix an impeller to a shaft by forming a cylindrical step difference part on a shaft end part, forming a taper hole opposed to the step difference part at prescribed clearances on a boss part of an impeller, and interposing a ...
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JP3027283B2 |
PURPOSE: To improve motor and pump efficiency by arranging a pressure room for storing a balance disk between a pump part and a motor part, and also arranging an annular balance sheet in a side edge part in a high pressure side of this b...
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JP3025295B2 |
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JP2000080996A |
To miniaturize a drainage pump equipped with an air conditioner or the like, its full height and to reduce vibration and noises. A drainage pump 1 is provided with a pump portion 200 and a motor portion 300. The pump portion 200 includes...
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JP3014991B2 |
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JP2000046363A |
To suppress the generation of noise by balancing the amount of suction with the amount of outlet upon low load and low head operation. A main vane 9 is radially formed from a rotating shaft 11 with a clearance from the inner peripheral s...
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JPH11351177A |
To provide a cryogenic rotary pump capable of more efficiently performing multiple functions of forcible feed. A cryogenic rotary pump 2 which pressurizes the flow of an extremely low temperature liquid and separates the flow into a firs...
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JPH11351176A |
To dispense with a stepping process, which is necessary in a conventional one, for an outer casing inside bore face so as to accomplish miniaturization and so as to facilitate assembly/disassembly by arranging a member in an annular clea...
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JPH11351149A |
To provide a shaft seal device for a pump provided with an emergency backup seal functioning when exposed to a high temperature operating liquid, to prevent the leakage of operating liquid to the outside in handling the high temperature ...
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JP2991999B2 |
To circulate water smoothly irrespective of the level of water supplied to a washing machine and to activate the resolution of a detergent by forming the second outlet intended for injecting water into a washing tub, irrespective of the ...
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JP2991493B2 |
A rotary disc pump comprises an outer housing with an inner cylindrical rotor chamber having an inlet at one end and an outlet at its outer periphery. A rotor assembly in the chamber comprises at least two parallel spaced discs disposed ...
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JPH11336546A |
To simplify the structure of a water pump in a cooling device of an engine in which the discharge amount of the pump can be regulated. An engine cooling device 1 is structured so that a water pump 10 is equipped with vanes 46 housed in a...
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JPH11336686A |
To increase the quantity of cooling water by providing a first impeller connected to a driving shaft, a second impeller disposed to be switched into a state of being connected to or cut off from the first impeller, and connecting mechani...
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JPH11324987A |
To miniaturize a centrifugal turbo machine while sufficiently lowering the fluid loss. A side plate 12 is provided with a half-open passage 15 for turning the flow from the nearly centrifugal direction to the nearly axial direction and w...
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JPH11513091A |
PCT No. PCT/AU96/00427 Sec. 371 Date Feb. 17, 1998 Sec. 102(e) Date Feb. 17, 1998 PCT Filed Jul. 8, 1996 PCT Pub. No. WO97/03291 PCT Pub. Date Jan. 30, 1997A rotor (18) for use with a fluid flow generator or reactor, the rotor being inte...
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JPH11303795A |
To provide a reinforced plate pump casing and its manufacturing method. This plate pump casing is composed of a body 31, a back lid 40 for enclosing the impeller 70 inside the body 31, an inlet flange 50, and an outlet flange 60. The bod...
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JPH11294375A |
To prevent generation of damage to a balance disc and a casing side stationary member caused by contact between metal members by providing a plurality of grooves into which fluid from an impeller outlet is led, at a disc part surface fac...
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JP2966831B2 |
A centrifugal pump has a casing, an overhung-mounted rotor in the casing having a feed chamber, which centrifugally accelerates the liquid flowing centrally to it, and a discharge chamber positioned axially behind it and connected to the...
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JP2600177Y2 |
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JPH11236893A |
To prevent a water leakage between a case and a cover surely by providing a stuck part on the upper outer periphery of a case and the lower outer periphery of a cover in a mutually agreed state respectively and also by integrating the ca...
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JPH11236899A |
To facilitate the assembly of a pump main body by molding a case and cover, installing a rotary blade pre-molded separately on either one side, molding a connection member on the outer periphery of the part with the case and cover put to...
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JP2941206B2 |
The present invention is relating to a circulating pump for pressurizing and circulating fluid in a system such as a boiler. An object of the present invention is to provide a circulating pump with a sub-impeller wherein a separate sub-i...
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JPH11201094A |
To enlarge a weight reduction range, and achieve energy-saving operation. In a turbo-compressor comprising a compressor housing 30 in which compression parts containing impellers 31 are connected in multiple stages, an inlet guide vane i...
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JP2925076B2 |
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JP2922639B2 |
PCT No. PCT/EP90/00665 Sec. 371 Date Jan. 31, 1991 Sec. 102(e) Date Jan. 31, 1991 PCT Filed Apr. 25, 1990 PCT Pub. No. WO90/13460 PCT Pub. Date Nov. 15, 1990.A double feed pump has two outlet channels to be selectively acted upon with li...
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JPH11190293A |
To provide a pump having a storage tank capable of eliminating a pipe and a joint between the pump and the tank by forming a combination of new special devices and component elements in a simpler manner at reduced cost. A pump 10 include...
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JP2597652Y2 |
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JP2913476B1 |
[wrap up] [Task] The length of the centrifugal multi-stage pump is shortened to promote lubrication of the sliding surface 12a of the mechanical seal 12. A guide blade 8 for guiding the liquid discharged from the impeller 3 in the final ...
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JPH11148483A |
To reduce axial thrusting force applied to a main spindle when a pump is started. This multi-stage pump is so constituted as to be provided with a thrust balancing mechanism and a plurality of impellers, and as to be disposed in the insi...
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JPH11506182A |
A relatively power efficient, low flow-rate pump comprises an integral rotor-impeller on a hollow shaft which forms the rotational axis. The rotor-impeller is a permanently magnetized with alternating poles about its periphery faces and ...
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JP2889499B2 |
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JPH11117888A |
To provide a high discharge rate even in a high discharge pressure range. A casing 18 is formed therein with a pump passage for returning fluid discharged from the outer peripheral side of an impeller 17 into a center side inlet port 27 ...
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