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JP3618077B2 |
To relieve cavitations occurring at the rotation of an impeller, to prevent intake air, to shorten an initial bath water suction time and to increase the volume of discharge water. A closed type impeller equipped with a shroud ring at a ...
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JP2004332594A |
To minimize syphon breakage, by securing water in a pump chamber by an amount enough for its self-priming action, in a self-priming pump.In an upper casing 20 and a lower casing 30, a suction pipe 23 is disposed to a ceiling part, and a ...
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JP3586392B2 |
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JP3576081B2 |
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JP2004278470A |
To provide a small, low-cost pumping system capable of being easily operated, a priming device used suitably for this system, and a pumping method.The pumping system is constituted so as to include a pump 1 having a water suction pipe 3 ...
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JP2004270447A |
To provide a seawater intake/supply pump apparatus low in cost, high in reliability and having corrosion resistance to seawater without using a special high-cost pump and equipment.This seawater intake/supply pump apparatus is provided w...
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JP2004245374A |
To solve a problem of an air vent valve used in a pump and piping wherein a clearance between a float and a guide is narrow because opening and closing operation of the valve is performed by buoyancy of the float and impurities included ...
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JP2004202093A |
To ensure that the air does not remain in a main body of a pump or in discharge piping.In the fire fighting pump wherein a vacuum pump is connected through suction piping to a proximal end part of intake piping fixed to an intake apertur...
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JP2004176708A |
To quickly supply water while preventing damage of an engine caused by overheat/seizure of the engine driving an impeller.In a portable fire engine, an intake flow passage communicates with an inlet port of an impeller chamber, and a dis...
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JP3537268B2 |
To provide a controller of a ventilator suitable for use with a car air conditioner. This controller comprises a stator 1 provided with coils with plural phases, a cage-like rotor opposing to the stator 1 and connected to a ventilator me...
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JP2004162591A |
To provide a self-priming pump shortened in air discharge time and reduced in size and weight as compared with a self-priming pump of a conventional structure by enhancing self-priming performance.In this self-priming pump, a water stora...
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JP3533448B2 |
To provide a pump device to prevent the occurrence of siphon break during opening operation of a discharge valve, line resistance is rapidly decreased and a pressure in a pump discharge pipe is decreased to a value lower than an atmosphe...
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JP2004116311A |
To provide a pumping system with high reliability, at the same time with simplifying a control substrate of the pumping system and making it compact.The control substrate is comprised of a main substrate for controlling the whole operati...
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JP2004092527A |
To further shorten air discharge time, compared with a self-prime pump having a conventional structure by increasing the inlet angle of an impeller and further enhancing the self-priming performance.A volute-shaped water storage space (s...
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JP2004092439A |
To further miniaturize a water storage space by adapting self-priming system and effectively use the water storage device in pumping up.An intake spiral chamber 26 communicating with an intake port 10 opened in a transverse direction is ...
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JP2004060463A |
To lower and suppress the generation of vibration and noise in the operation of a pump at low head.Swirl vanes radially extend from a runner boss to connect outside arcuate barriers 15 to the runner boss, and the base of a trapezoid whos...
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JP3499743B2 |
To provide a self-priming pump which has high self-priming efficiency and high pumping efficiency. A self-priming pump 1 is composed of a pump part 4 which has an inner space divided into a tank chamber 20 and a pump chamber 21 by means ...
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JP3499008B2 |
PURPOSE: To provide an automotive fuel pump causing little noise during operation and having a good pump efficiency. CONSTITUTION: A fuel pump of the regenerative turbine type has an impeller enclosed between a pump cover and a pump bott...
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JP2004052577A |
To provide a self-priming pump having improved compact construction and pumping performance by optimizing the shape of a discharge flow path and the spreading angle of the discharge flow path for suppressing the interaction of swirl gene...
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JP2004027915A |
To reduce the number of part items constituting a pump for cost cutting and miniaturization, to prevent the backflow of the pump and a fall of an impeller, and to improve a pump efficiency.The pump is provided with an impeller 22 in a ro...
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JP2003328975A |
To provide a pump reduced in the generation of noise and vibration and shortened in self-priming time.In a motor part of this pump, a rotor having a magnetic body in the inner periphery of a stator is supported freely to rotate by a supp...
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JP2003328976A |
To provide a self-priming pump which reduces foreign materials to be caught by a rotor or winding on the rotor, adhering and staying to/in the pump.This self-priming pump 1 is provided with a motor part 10 having a water suction opening ...
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JP2003301788A |
To provide a self-priming type pump which prevents any foreign matters from entangling with its rotor and allowing loose hairs, thread waste, etc., having flowed into the pump eventually to be discharged to outside the pump as they are.T...
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JP2003239887A |
To provide a self suction type pump in which noise is reduced, and, a self suction characteristic and stable operation is maintained.This self suction type pump is provided with a main body casing 20 housing an impellor therein, a second...
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JP2003227599A |
To provide a power generating device adding all electric requirements including propulsion force on the basis of an alternating current generator driven by an internal combustion engine or a gas turbine supplied with loaded gas.The metha...
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JP2003227487A |
To provide a self-priming pump improved in self-priming performance while keeping pumping performance.This self-priming pump comprises an impeller chamber 33 communicated to a water sucking channel 43 and accommodating an impeller 44, a ...
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JP2003172263A |
To provide a vacuum pump capable of preventing a damage and a degradation in performance caused by a rotation of a piston against a cam.A pair of opposed receiving surfaces 36, 37 is provided on the piston in a casing 20. The piston 23 i...
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JP2003148373A |
To shorten air discharge time compared to a self-priming pump of conventional structure by enlarging an inlet angle of a runner.Between a suction port 10a and a delivery volute 22, a volute- shaped water storage space (suction volute) 40...
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JP2003139083A |
To quickly put the inside of a suction pump and the inside of a pump body in a vacuum state, and to eliminate the remainder of air in the pump body.In this fire pump, a vacuum pump is connected via a suction side suction pipe to a base e...
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JP2003120568A |
To reduce facility cost by allowing the formation of a condition of filling with water without using a vacuum pump in the start-up of a volute pump.A seal water line 14 provided with a sealing pump 11 and a cut-off valve 13 is laid in or...
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JP3394432B2 |
To provide a horizontal shaft pump reducing the starting torque required for a motor driving the pump and capable of quickly starting a pumping operation. An opening section 35 is provided at the upper section of a suction elbow 12 on th...
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JP3394544B2 |
PURPOSE: To prevent the occurrence of vapor in a trochoid pump type gear pump. CONSTITUTION: A plural number of pressure chambers 50 is formed between the outer rotor 33 and the inner rotor 34 of a trochoid type pump section. When these ...
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JP3388946B2 |
PURPOSE: To reduce a noise and vibration by lowering discharging speed of vapor entrained fuel. CONSTITUTION: In a fuel pump device having a vapor by-pass port 50 communicated from a pump house to the inside space of a fuel tank, a vapor...
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JP2003065276A |
To provide equipment which is inexpensive and can easily pump up water.This self-supply pump mainly comprises a small-diameter intake pipe, a liquid tank with a liquid-level meter, an oil-rotation type vacuum pump and a liquid feed pump,...
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JP2003056711A |
To provide a plug having superior corrosion resistance. This plug is so formed that a hollow part 10 recessed inward is formed in the tip surface of a plug body 7, a fitting insertion part 17 capable of press-fitted inside the hollow par...
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JP3372373B2 |
A unified fuel pump assembly combines a vane-type pump and a booster stage for the inlet of the vane-type pump, in a unitary structure to substantially reduce "windage" losses caused by relatively moving parts. The unified structure also...
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JP3363769B2 |
To provide a pump system with a self-priming device, which requires neither priming nor float valve. This pump system is so constituted as to be provided with a main pump 11 having no self-priming capacity, a self suction unit 12 connect...
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JP2002371985A |
To provide a self-priming volute pump that ensures an efficient gas/ liquid change in a pump casing 10 at a start of operation and a quick shift to a pumping operation, and that prevents a distortion of a discharge flow and increases eff...
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JP3357542B2 |
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JP2002332982A |
To provide a fire pump capable of discharging water from a feed pump immediately after the evacuation by vacuum pumps.In the fire pump, an engine drives the feed pump 2 as well as the vacuum pumps 4, and the feed pump 2 is primed by the ...
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JP3347794B2 |
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JP2002303289A |
To provide a cylinder type self-priming magnet pump with low noise, low vibration and easy maintenance, not needing advanced parts machining even in a manufacturing process, and less prone to cause fixing.In a composition of the cylinder...
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JP2002275005A |
To obtain a fungicide composition capable of exhibiting the effect for a long time by bringing washing water to flow into a washing tank while being treated wilhelm agent by bringing the washing water into contact with a the fungicide, a...
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JP2002272314A |
To obviate the necessity of 'priming water'-related operation in restarting a pump in an external mount-type filter device for aquarium water.A vent valve is set on such a portion of a water suction pipe as to lie on the surface of aquar...
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JP2002257073A |
To provide a protection device of a foot valve suppressing deterioration of the foot valve, eliminating the use of an expensive corrosion resistant metal, avoiding the drop in water stop property, shortening priming time, enhancing respo...
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JP3319207B2 |
PURPOSE: To improve self-priming liquid suction pump head and prevent the pulsation of liquid in a liquid suction hose by providing a check valve allowing the unidirectional flow of liquid from the liquid suction hose to a liquid storage...
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JP3310500B2 |
To provide an underwater pump capable of achieving light weight and low cost by forming a pump casing with a resin, maintaining the efficiency of a pump, and preventing pumping near a no-discharge operating flow rate from being deteriora...
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JP2002213383A |
To provide a self-priming turbo pump requiring no priming.A fan 16 and a pump 18 that are driven by a common motor 12 are disposed on the same output shaft 14. The fan 16 has a core 22 fixed to the output shaft, 14 and a permanent magnet...
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JP3306307B2 |
To save tap water, by equipping priming water supply path for supplying tap water to a pump as priming water for a self-priming pump and a priming water supply path opening/closing means to control the opening/closing means to open so as...
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JP2002195184A |
To provide a remaining water treatment pump capable of draining water completely at very low water level without reducing suction efficiency from a strainer bottom plate when driving the pump, preventing the back flow of water when stopp...
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