Abstract: A dispenser used for discharging a mixture of gas and a paste material includes: a nozzle part provided in a tip end part of a body and having a tip end opening through which the mixture is discharged; a flow path extending from a mixture introduction part to the tip end opening through a hollow space of the nozzle part; a needle part movable in the flow path of the nozzle part to open and close the flow path; a driving part that drives the needle part; and a stopper part that limits an operation range of the needle part. The nozzle part has a tapered section in which an inside diameter of the flow path of the nozzle part decreases toward the tip end opening. Also provided is a stopper position adjusting part that adjusts a stop position defined by the stopper part.

Abstract: The present invention allows measurement of a precise amount of gas by preventing sudden flow rate fluctuations of gas. A gas supply system 1a for a mixing-discharging apparatus 90 to mix gas and paste material includes a regulator 2 adapted to control pressure of gas supplied to the mixing-discharging apparatus, a flow meter 3 adapted to measure flow rate of the gas, a gas storage portion 4 adapted to store the gas, and a valve 5 adapted to open and close a gas introduction path 11 to the mixing-discharging apparatus 90. The flow meter 3 is placed in front of the gas storage portion 4 and behind the regulator 2 with respect to a flow of the gas.

Abstract: A dispenser for discharging a mixture of gas and paste material includes: a nozzle part (2) provided in a tip end part of a body (11) and having a tip end opening; a flow path (4) for the mixture extending from an introduction part (5) for the mixture to the tip end opening through a hollow space of the nozzle part; a needle part (3) movable in the flow path of the nozzle part to open and close the flow path; a driving part (7, 8, and 9) that drives the needle part; and a stopper part (10, 14, and 16) that limits an operation range of the needle part. The nozzle part has a tapered section in which an inside diameter of the flow path of the nozzle part relative to an operation range of a tip end of the needle part decreases toward the tip end opening.

Abstract: Provided are a turbine facility, in which iron oxide particle scale that adheres to inner surfaces of boiler tubes and impedes heat transfer can be efficiently removed from heater drainage water; and a water treatment method for heater drainage water in the turbine facility. The turbine facility includes a boiler 9, steam turbines 12 and 16, a condenser 1, feedwater heaters 5 and 8 which are interposed in water supply lines 4 and 6 that supply condensate condensed by the condenser 1 to the boiler 9, and in which part of steam supplied from the steam turbine 12 to a repeater is extracted as extraction steam, and the feedwater is heated using the extraction steam, and a filtration device 19 in which heater drainage water discharged from the low-pressure feedwater heater 5 is filtered and supplied to the water supply system for recovery. The filtration device 19 includes a filter having a pore size of 1 to 5 ?m.

Abstract: It is an object of the present invention to provide a foam molding method for foaming and molding a foamable material, which is free from problems, such as deformation of or continuation between closed cells. To achieve this object, there is provided a foam molding method for foaming a foamable material, comprising the steps of providing a mold having a cavity, placing the cavity of the mold under a pressurized condition, foaming the foamable material in the cavity of the mold under the pressurized condition, thus appropriately controlling foaming of the foamable material, and releasing the pressurized condition of the cavity of the mold.

Abstract: An electroconductive roller including an electroconductive cellular material layer, comprised of a polyurethane composition, which has an average foamed cell diameter not more than 100 ?m and a variation ?D of the foamed cell diameter not more than 50 ?m. The electroconductive roller has a hardness variation ?Hs not more than 8 degrees and a circumferential non-uniformity index RMAX/RMIN in an electric resistance thereof not more than 1.3. The electroconductive cellular material layer is made of a thermosetting one-part polyurethane composition. And the polyurethane composition is cured instantly at a temperature not less than a thermosetting critical temperature for curing thereof, after it is foamed by a mechanical foaming method.

Abstract: It is an object of the present invention to provide a foam molding method for foaming and molding a foamable material, which is free from problems, such as deformation of or continuation between closed cells. To achieve this object, there is provided a foam molding method for foaming a foamable material, comprising the steps of providing a mold having a cavity, placing the cavity of the mold under a pressurized condition, foaming the foamable material in the cavity of the mold under the pressurized condition, thus appropriately controlling foaming of the foamable material, and releasing the pressurized condition of the cavity of the mold.

Abstract: A piston pump has a piston and cylinder. A gas is supplied into the cylinder during and/or after a suction stroke of the piston pump, and a high-viscosity material is supplied into the cylinder after the suction stroke. A discharge stroke of the piston pump is effected after completion of supply of the high-viscosity material to thereby discharge the gas and high-viscosity material into a pipe. Use is made of piston pumps 45A and 45B, each including a cylinder and a piston which reciprocally moves within the cylinder to effect the suction stroke and discharge stroke, and a membrane gas generator 10 to which compressed air is supplied to generate a gas. A low-pressure gas generated by the membrane gas generator 10 is supplied into each piston pump and the high-viscosity material is introduced into the gas.

Abstract: A hollow bead of high quality is applied and molded into a shape corresponding to and following a shape of an applying position onto which the bead is to be applied. A bead-molding apparatus includes a discharging device of a double nozzle structure comprised of an inner nozzle and an outer nozzle, a highly viscous material feed unit for feeding a highly viscous material that is fluid in a form of a stream in a high speed flow region and can retain a shape into which it is applied and molded in a low speed flow region, a manipulator disposed so as to transfer the discharging device mounted thereon to a desired position, and a controller for controlling overall operations of the apparatus. The discharging device is controlled so as to move along the applying position of a member while feeding gases thereto from the inner nozzle and discharging the highly viscous material thereto from the outer nozzle.

Abstract: The present invention provides one-pack type curing paste material to be used in a method of mechanically mixing and dispersing a low-pressure gas into a paste material to produce an expandable material, followed by discharging and expanding the expandable material to produce a curable product, especially a cured product with dense uniform closed-cells by using a mechanical foaming apparatus suitable for performing of the method. The one-pack type curing paste material of the present invention has viscosity characteristics included in the zone defined by points A, B, C and D in the graph of FIG. 1 showing the relationship between shear rate and apparent viscosity, said points A and B being at 50-30000 poises of an apparent viscosity (measured by a Brookfield rotary viscometer using spindle No.7, at 2 rpm, at 20° C.) in low shear rate region (0.43 sec?1) and said points C and D being at 20-2000 poises of an apparent viscosity (measured by an apparent viscosity meter according to JIS K2220, at 20° C.

Abstract: It is an object of the present invention to provide a foam molding method for foaming and molding a foamable material, which is free from problems, such as deformation of or continuation between closed cells. To achieve this object, there is provided a foam molding method for foaming a foamable material, comprising the steps of providing a mold having a cavity, placing the cavity of the mold under a pressurized condition, foaming the foamable material in the cavity of the mold under the pressurized condition, thus appropriately controlling foaming of the foamable material, and releasing the pressurized condition of the cavity of the mold.

Abstract: An electroconductive roller including an electroconductive cellular material layer, comprised of a polyurethane composition, which has an average foamed cell diameter not more than 100 ?m and a variation ?D of the foamed cell diameter not more than 50 ?m. The electroconductive roller has a hardness variation ?Hs not more than 8 degrees and a circumferential non-uniformity index RMAX/RMIN in an electric resistance thereof not more than 1.3. The electroconductive cellular material layer is made of a thermosetting one-part polyurethane composition. And the polyurethane composition is cured instantly at a temperature not less than a thermosetting critical temperature for curing thereof, after it is foamed by a mechanical foaming method.

Abstract: A piston pump has a piston and cylinder. A gas is supplied into the cylinder during and/or after a suction stroke of the piston pump, and a high-viscosity material is supplied into the cylinder after the suction stroke. A discharge stroke of the piston pump is effected after completion of supply of the high-viscosity material to thereby discharge the gas and high-viscosity material into a pipe. Use is made of piston pumps 45A and 45B, each including a cylinder and a piston which reciprocally moves within the cylinder to effect the suction stroke and discharge stroke, and a membrane gas generator 10 to which compressed air is supplied to generate a gas. A low-pressure gas generated by the membrane gas generator 10 is supplied into each piston pump and the high-viscosity material is introduced into the gas.

Abstract: The hollow bead of high quality are applied and molded into a shape corresponding to and following the shape of a applying position onto which the bead are to be applied. The bead-molding apparatus includes a discharging device 10 of a double nozzle structure 12 comprised of an inner nozzle 36 and an outer nozzle 38, a highly viscous material feed unit 16 for feeding a highly viscous material that is fluid in the form of a stream in a high speed flow region and can retain the shape into which it is applied and molded in a low speed flow region, a manipulator 60 disposed so as to transfer the discharging device 10 mounted thereon to a desired position, and a controller 22 for controlling the overall operations of the apparatus. The discharging device 10 is controlled so as to move along the applying position of a work 23 while feeding gases thereto from the inner nozzle 36 and discharging the highly viscous material thereto from the outer nozzle 38.

Abstract: A speaker edge is made of a thermosetting composition consisting of a polyurethane prepolymer and an inactivated solid polyamine as a latent hardener. A gas is dispersed in the thermosetting composition, prior to feed into a mold, so that it can foam and solidify to give the speaker edge. In a method of making the speaker edge, the composition will be injected into a female mold segment heated below the critical thermosetting temperature, foaming the composition. Then placed in the female segment is a male segment heated above the critical temperature, causing the ingredients to react with each other to solidify in the mold.

Abstract: A speaker edge is made of a thermosetting composition consisting of a polyurethane prepolymer and an inactivated solid polyamine as a latent hardener. A gas is dispersed in the thermosetting composition, prior to feed into a mold, so that it can foam and solidify to give the speaker edge. In a method of making the speaker edge, the composition will be injected into a female mold segment heated below the critical thermosetting temperature, foaming the composition. Then placed in the female segment is a male segment heated above the critical temperature, causing the ingredients to react with each other to solidify in the mold.

Abstract: A piston pump has a piston and cylinder, the piston being adapted to reciprocally move within the cylinder to effect a suction stroke and discharge stroke. A gas is supplied into the cylinder during and/or after the suction stroke of the piston pump, and a high-viscosity material is supplied into the cylinder after the suction stroke. A discharge stroke of the piston pump is effected after completion of supply of the high-viscosity material in the cylinder to thereby discharge the gas and high-viscosity material into a pipe. A first step introduces a high-viscosity material into a gas, a second step pressurizes, by a pump, a combination of the high-viscosity material and the gas transferred from the first step, a third step passes the combination in a pressurized state through a dispersing pipe to disperse the gas into the high-viscosity material to produce a mixture, and a fourth step discharges the mixture to effect foaming.

Abstract: A piston pump has a piston and cylinder, the piston being adapted to reciprocally move within the cylinder to effect a suction stroke and discharge stroke. A gas is supplied into the cylinder during and/or after the suction stroke of the piston pump, and a high-viscosity material is supplied into the cylinder after the suction stroke. A discharge stroke of the piston pump is effected after completion of supply of the high-viscosity material in the cylinder to thereby discharge the gas and high-viscosity material into a pipe. A first step introduces a high-viscosity material into a gas, a second step pressurizes, by a pump, a combination of the high-viscosity material and the gas transferred from the first step, a third step passes the combination in a pressurized state through a dispersing pipe to disperse the gas into the high-viscosity material to produce a mixture, and a fourth step discharges the mixture to effect foaming.

Abstract: A boiler scale collecting device enables collecting and recovery of most boiler scale particulates (p) in a steam flow line (f) in a steam pipe (02) extending from a power generation steam boiler to an inlet (01′) of a power generation steam turbine (01). The steam pipe (02), of constant inner diameter (d), extends from the boiler side to the inlet (01′) of the steam turbine (01), and turns at direction turning portion (e) from a vertical steam pipe (02′) to a lateral steam pipe (02″) near the inlet (01″) of the steam turbine (01). The vertical steam pipe (02′) is elongated beyond the direction turning portion (e) to form an elongated portion (02′a) having a lower end (02″a). The direction turning portion (e), including the vertical steam pipe (02′) and the lateral steam pipe (02″), and the elongated portion (02′a) are made in an integral unit of forged steel.

Abstract: Low-pressure gas is mixed in a viscous material. The flow of the gas can be easily controlled so that the dispersion of the mixing ratio of the viscous material to the gas may be confined within a small tolerance and fine bubbles may be uniformly distributed in the interior of the viscous material. The gas is mixed in the viscous material by a first pump, from which a mixture of the gas and the viscous material is delivered. Pressure is applied to the mixture by a second pump. The gas is distributed in the interior of the viscous material by allowing the mixture under pressure to pass through a conduit assembly. The viscous material is foamed when the mixture is discharged from a nozzle through a discharge pipe.