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1. 发明专利

JPS62284979A MONITOR FOR RECIPROCATION PUMP 失效
公开(公告)号：JPS62284979A
公开(公告)日：1987-12-10
申请号：JP12768786
申请日：1986-06-02
申请人： OSAKA GAS CO LTD , NIIGATA UOSHINTON KK
发明人： MIZOGUCHI YUKIO , YAMAMOTO HARUO , NAKAMURA HARUO
IPC分类号： F04B49/10
摘要： PURPOSE:To enable to measure and monitor the flow and/or abnormality of a pump accurately by operating the detected result of each pressure on the suction side and the delivery side and in the plunger chamber of a reciprocation pump and the detected result of the displacement of the plunger. CONSTITUTION:When a plunger 5 is reciprocated in the vertical direction by a crank mechanism, etc., fluid such as slurry, etc., sucked from an inlet passage 9 into inside of a plunger chamber 2 through a suction check valve 3 is next discharged from an outlet passage 19 through a discharge check valve 4. In this type of reciprocation pump, detectors 6-8 for 1st to 3rd pressures are provided for detecting each pressure at the plunger chamber 2, the inlet of the suction check valve 3 and the outlet of the discharge check valve 4. Further a displacement detector 20 for detecting the displacement of the plunger 5 is provided. And the constitution is so arranged that the discharge flow of a pump and/or the abnormal condition of the pump may be monitored by processing the outputs of these detectors 6-8, 20 by means of a microcomputer and others.

2. 发明专利

JP2002098248A INTEGRATED MOTOR-OPERATED CHECK VALVE 失效
公开(公告)号：JP2002098248A
公开(公告)日：2002-04-05
申请号：JP2000285008
申请日：2000-09-20
申请人： NIIGATA UOSHINTON KK
发明人： NAKAMURA HARUO
IPC分类号： F16K15/18 , F16K31/04
摘要： PROBLEM TO BE SOLVED: To provide a structurally simple integrated motor-operated check valve that integrates an on-off valve and a check valve and combines the respective functions. SOLUTION: The integrated motor-operated check valve comprises a valve element 4 in the form of a polygonal prism for closing or interconnecting an upstream passage 1a and a downstream passage 1b, a casing 1 having the upstream passage, the downstream passage and a valve element chamber 19 formed therebetween to hold the valve element fitted in slidably in a height direction, an urging means 10 for urging the valve element to the closing position until water pressure in the upstream passage exceeds a given value, an electric valve drive means 17, 18 having driving force for moving the valve element arbitrarily to the closing position while in an off state, and a stem rod 16 used to transmit the driving force of the valve drive means to the valve element and while in an on state, moved to a noncontact position leaving a space over which the valve element is movable to the interconnecting position. A steady operational state sets the valve drive means on to offer a function as a check valve, and a starting state and a stopping state control the valve drive means to offer a function as a motor-operated on-off valve.

3. 发明专利

JPH11201057A INLET VALVE MECHANISM FOR PLUNGER PUMP 失效
公开(公告)号：JPH11201057A
公开(公告)日：1999-07-27
申请号：JP154198
申请日：1998-01-07
申请人： NIIGATA UOSHINTON KK
发明人： NAKAMURA HARUO
IPC分类号： F16K1/04 , F04B53/10 , F04B53/12 , F16K15/18 , F16K39/02
摘要： PROBLEM TO BE SOLVED: To reduce damage of a valve lifter to press a convex lens-shaped valve of an inlet valve mechanism. SOLUTION: This device comprises a convex lens-shaped valve having a communication hole at a center part to press a valve sheat provided in a valve seat of an inlet valve mechanism to the valve seat when the valve is closed, plural valve lifters 10 to press the convex lens-shaped valve to get apart from the valve seat against energization force of a spring when the valve is opened, a holder 11 having a communication part to hold a base end part 10 of the valve lifter 10, a support shaft 12 to rotatably support the holder 11 at a plunger chamber, and the spring provided around the support shaft 12 to press a tip 10b of the valve lifter 10 to an outer edge part of the convex lens-shaped valve, and the base end part 10a of the valve lifter 10 is rotatably and slidably held to be prevented from removing through a spring 13 between a bottom of a recessed hole 11a formed in the holder 11 and the base end 11b of the valve lifter 10.

4. 发明专利

JP2002098571A LEVEL INDICATOR FOR SEALED PRESSURE TANK 失效
公开(公告)号：JP2002098571A
公开(公告)日：2002-04-05
申请号：JP2000291401
申请日：2000-09-26
申请人： NIIGATA UOSHINTON KK
发明人： NAKAMURA HARUO
IPC分类号： G01F23/02 , B65D90/48
摘要： PROBLEM TO BE SOLVED: To provide a level indicator for a sealed pressure tank of which the main body is not only easy to be cleaned up but also it can be cleaned up during its operation and is easy to maintain. SOLUTION: This level indicator is installed in the sidewall of the sealed pressure tank to check the liquid level contained in the tank by visual observation from outside and has characteristic features that the level indicator is made as a vertically extendable tubular by transparent material, comprises the main body of the level indicator 2 which has two communicating pipes 2a, 2b at the top and bottom connected to the tank, passage opening and closing means 3c, 3d which are installed in the top and bottom ends of the main body of the level indicator 2, passage opening and closing means 3a, 3b provided on the two communicating pipes 2a, 2b communicating with the tank and a wiper 5 which is installed to slide freely along the vertical direction inside the level indicator 2.

5. 发明专利

JPH09300012A OPERATING METHOD OF HIGH-PRESSURE DESCALING DEVICE 失效
公开(公告)号：JPH09300012A
公开(公告)日：1997-11-25
申请号：JP11726496
申请日：1996-05-13
申请人： NIIGATA UOSHINTON KK
发明人： NAKAMURA HARUO
IPC分类号： B21B45/08
摘要： PROBLEM TO BE SOLVED: To provide a high-pressure descaling device with which the lives of the sealing device of an injection valve and a spool are prolonged. SOLUTION: This method is an operating method of the high-pressure descaling device 60 which is made so that a variable rotational speed turbine pump 63 is absorbablly connected to the discharging side of a descaling device whose injection pressure is about , high-pressure water is jetted on the surface of a steel sheet 6 for rolling by executing the opening and closing operation of the injection valve 7 provided on the discharging side of the turbine pump 63 and scale is removed from the surface of the steel sheet, when the high-pressure water is not jetted, the turbine pump 63 is rotated at low speed and, when the high-pressure water is jetted, after opening the injection valve 7, the speed of the turbine pump 63 is increased to a prescribed rotational speed and, at the time of stopping the jet of the cooling water, the injection valve 7 is closed after reducing the rotational speed of the turbine pump 63.

6. 发明专利

JP2002098247A CHECK VALVE 失效
公开(公告)号：JP2002098247A
公开(公告)日：2002-04-05
申请号：JP2000285009
申请日：2000-09-20
申请人： NIIGATA UOSHINTON KK
发明人： NAKAMURA HARUO
IPC分类号： F16K15/08
摘要： PROBLEM TO BE SOLVED: To provide a structurally simple check valve that can maintain a smooth slide of a disk on a disk guide even after a long-term operation and prolong the service life of the disk guide. SOLUTION: The check valve comprises a valve element 4 in the form of a polygonal prism for closing or interconnecting an upstream passage 1a and a downstream passage 1b, a casing 1 having the upstream passage, the downstream passage and a valve element chamber 19 formed therebetween to hold the valve element fitted in slidably in a height direction, and an energizing means 10 for energizing the valve element to the closing position until water pressure in the upstream passage exceeds a given value. The valve element has a chamfer face 4b of a constant width along each corner in a height direction, and has a shape with the lower base of the valve element twisted at a given angle to the upper base to place each chamfer face at the given angle to the vertical line on the periphery of the valve element so that the valve element rotates on the height axis center when sliding in the valve element chamber.

7. 发明专利

JP2000265970A BALL VALVE MECHANISM OF PLUNGER PUMP 失效
公开(公告)号：JP2000265970A
公开(公告)日：2000-09-26
申请号：JP6912099
申请日：1999-03-15
申请人： NIIGATA UOSHINTON KK
发明人： NAKAMURA HARUO
IPC分类号： F16K15/04 , F04B9/04 , F04B53/10
摘要： PROBLEM TO BE SOLVED: To perform stable suction and discharge by eliminating erroneous seating of a ball to a valve seat. SOLUTION: In a ball valve mechanism of a plunger, the lower end opening of a stuffing box barrel 12 so provided that a plunger 11 may be lifted is provided so as to be communicated with a pump main body passage 13, liquid is sucked from a ball valve mechanism 14 on the suction side provided on one side of the pump main body passage to the pump main body passage by the lifting operation of the plunger, and liquid of the pump main body passage is discharged from a ball valve mechanism 15 provided on the other side of the pump main body passage. The ball valve mechanism is provided with balls 23 for closing the valve by being seated on the valve seats 24 and for opening the valve by being separated from the valve seats, and coil springs 1 with which the balls are brought into contact when the balls are separated from the valve seats.

8. 发明专利

JP2973180B2 失效
公开(公告)号：JP2973180B2
公开(公告)日：1999-11-08
申请号：JP11726496
申请日：1996-05-13
申请人： NIIGATA UOSHINTON KK
发明人： NAKAMURA HARUO
IPC分类号： B21B45/08

9. 发明专利

JPH11257215A SLIDE VALVE SUPPORT MEMBER FOR VALVE MECHANISM OF PLUNGER PUMP 失效
公开(公告)号：JPH11257215A
公开(公告)日：1999-09-21
申请号：JP6346498
申请日：1998-03-13
申请人： NIIGATA UOSHINTON KK
发明人： NAKAMURA HARUO
IPC分类号： F04B23/06 , F04B53/10
摘要： PROBLEM TO BE SOLVED: To enable free installation or removal of slide valve support parts on which the circumference of a slide valve is supported for sliding motion. SOLUTION: The slide valve support member comprises a cylindrical spring retainer part 4 formed at its dead end 1 wish a communication hole 2 and a coil spring retaining part 3; a plurality of slide valve support parts 7 spaced out on an opening inside wall 5 of an enlarged bore for later free removal or installation, each having a sliding-contact face 7a to which an abrasion- and corrosion-resisting metal 7b is welded to support a slide valve 6 thereon for sliding motion; and a mounting part 11 fixed on the periphery 9" of an outer peripheral valve seat 9' round the open end of the opening inside wall 5, so that the radially inner and outer surfaces of the slide valve 6, which is put in contact with a spring 8 arranged in the spring retainer part 4, are also placed in contact with an inner valve seat 9 and the outer valve seat 9' with its circumference being supported on these sliding-contact faces 7a for sliding motion.

10. 发明专利

JPH10260736A MULTI-FUNCTIONAL PRESSURE CONTROL VALVE 失效
公开(公告)号：JPH10260736A
公开(公告)日：1998-09-29
申请号：JP6263397
申请日：1997-03-17
申请人： NIIGATA UOSHINTON KK , KANEKO SANGYO KK
发明人： NAKAMURA HARUO
IPC分类号： F16K17/04 , F16K47/04 , G05D16/10
摘要： PROBLEM TO BE SOLVED: To provide a multi-functional pressure control valve provided with the functions of the plural kinds of the valves such as an unloading valve, a pressure adjustment valve and a safety valve together by adding an elevating and lowering device, a damper device and a cylindrical basket-like material for dividing a space inside a valve box into a part on a center side and the part on an outer side surrounding the part. SOLUTION: This valve is constituted of the pressure control valve, the elevating and lowering device 44, the damper device 46 and the cylindrical basket-like material 52, etc. The pressure control valve keeps the pressure of fluid on an entrance side fixed and the elevating and lowering device 44 lifts a lower spring receiver 43 upwards against the repulsive force of the coil spring 42 of the pressure control valve. The damper device 46 controls the rapid movement of the valve rod 45 of the pressure control valve and the basket-like material 52 divides the space inside the valve box 47 of the pressure adjustment valve into the part 49 in the center side whose center is a valve body 48 and the part 50 on the outer side coaxially surrounding the part 49 on the center side. This multi-functional pressure control valve is equipped in a branching pipe provided in the ejection piping of a high pressure de-scaling device.

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