Abstract: A coupling for high-pressure fluid achieves a long life by easily tackling wear at a connected portion due to flow of high-pressure slurry. The coupling is configured by a pipe having an inverse male screw near an end thereof; a bush being screwed to the inverse male screw; a box nut having a larger diameter hole, through which the bush can pass, on a tip end side, and a small diameter hole, through which the pipe passes, on a base end side; a block having a female screw hole that is screwed to the box nut; a washer made from soft material which is to be inserted in an accommodating space at an end portion of the fluid route; and a ring being screwed to a female screw of the female screw hole; and a polygonal hole drilled to the ring are provided, and the end portion of the pipe which passes the box nut and of which end face abuts the washer is supported by the polygonal hole.

Abstract: To provide a particle pulverizer capable of suppressing the wear of parts. The particle pulverizer comprises: two flow passages 8a, 8a positioned on an approximately same straight line and having outlets disposed so as to be close and opposed to each other; through-holes 9, 9 provided at any positions of passages and having diameters smaller than the diameters of the flow passages, wherein liquid jetted out of one through-hole 9 does not reach the other through-hole 9.

Abstract: To provide a long-lived coupling for high-pressure fluid easily tackling wear at a connected portion due to flow of high-pressure slurry. A pipe 11 having an inverse male screw 11c near an end thereof; a bush 13 being screwed to the inverse male screw; a box nut 12 having a larger diameter hole, through which the bush can pass, on a tip end side, and a small diameter hole, through which the pipe passes, on a base end side; a block 14 having a female screw hole 15 that is screwed to the box nut; a washer 18 made from soft material which is to be inserted in an accommodating space 17 at an end portion of the fluid route; and a ring 20 being screwed to a female screw of the female screw hole 15; and a polygonal hole 20b drilled to the ring 20 are provided, and the end portion 11b of the pipe which passes the box nut and of which end face abuts the washer is supported by the polygonal hole 20b.

Abstract: A clustered creature exterminating method efficiently exterminates clustered creature such as cyanobacteria in large quantity with use of a pressure which is substantially lower than that of the conventional method. The exterminating method includes the steps of: pressurizing a fluid containing a clustered creature such as cyanobacteria through a pump; suddenly lowering the pressure applied to the fluid by injecting the fluid from nozzle groups; and destroying a bonding in the clustered creature by a cavitation caused by the pressure drop. The nozzle groups may be arranged to oppose to one another to collide the injected fluids with each other, which divides the cyanobacteria into many small pieces. As a result, the cyanobacteria lose the ability to rise, and sink at the bottom of water, therefore, die because they cannot photosynthesize.

Abstract: A method of producing a fine particle dispersion characterized by having a dispersing step where, after fine particles have been sucked into a dispersing medium to prepare a suspension by a suction type stirring machine and bubbles have been removed from the suspension by a bubble removing means, the suspension is pressurized and introduced from the opposite directions so as to collide with each other, thereby dispersing the suspension.

Abstract: A clustered creature exterminating method exterminating clustered creature such as cyanobacteria in large quantity. The clustered creature exterminating method includes the steps of: pressurizing a fluid containing a clustered creature such as cyanobacteria through a pump; suddenly lowering the pressure applied to the fluid by injecting the fluid from nozzle groups; and destroying a bonding in the clustered creature by a cavitation caused by the pressure drop. The nozzle groups may be arranged so as to oppose with each other to collide the injected fluids with each other, which allows the cyanobacteria to be divided into many small pieces. As a result, the cyanobacteria lose the capacity to rise and sink at the bottom of water, therefore, they cannot photosynthesize to die out.

Abstract: The invention provides a treating process and system using a chemical treating liquid, which enables uniform treatments to be carried out within a reduced period of time. A heating tube is used to heat a fluid passing therethrough by irradiation of the fluid with microwaves. A pressurizer is provided upstream of the heating tube, and a throttle valve is provided downstream of the heating tube, so that the boiling of the fluid is prevented by activating the pressurizer to increase the internal pressure of the heating tube. A mixer comprising opposite nozzles is provided to jet fluids from the nozzles for collision with each other, so that the fluids are uniformly mixed. The treating process and system are suitable for semiconductor unit production.

Abstract: An apparatus and method for transferring a particulate material in a non-contact manner. The apparatus has a driving device including a nozzle curved surface portion fitted to the transfer pipe to join with the inner wall surface of the pipe. The nozzle curved surface portion has a curved surface whose diameter continuously increases from the inner wall surface. The driving device further includes an annular gap-forming member that forms a nozzle gap between it and the nozzle curved surface portion. A fluid is caused to flow into the transfer pipe from the driving device, thereby forming a buffer layer of a spiral flow in the vicinity of the inner wall surface of the transfer pipe and thus keeping the particulate material in a non-contact state.

Abstract: The present invention provides a high pressure pump (1), which comprises an electric motor (2) having a through-hole in axial direction on a rotation shaft (5), a thrust transmission shaft (8) engaged with threads of a rotation nut (6) operated by rotation of the motor, passing through the through-hole and performing linear reciprocal movement, plungers (9a, 9b) performing reciprocal movement in cylinders and connected to at least one end of the thrust transmission shaft (8), and a stress-strain sensor (16) provided on at least one of the plunger or the thrust transmission shaft.

Abstract: In an apparatus and a method, a suspension of fluid using a fluid under supercritical state as a dispersion medium is pulverized to obtain fine particles. Solid particles are suspended in the fluid under supercritical or subcritical state, which is in a gaseous state at normal temperature. Thus, pressure on the suspension fluid is increased, and the suspension fluid under high pressure thus obtained is injected through a nozzle and collided at high speed to disperse and pulverize. Then, pressure on the suspension fluid is reduced, and the fluid under supercritical or subcritical state is vaporized and solid particles are separated. As a result, efficient pulverizing can be performed, and it is possible to prevent agglomeration of particles in drying process.

Abstract: A high-pressure pump having a high-pressure cylinder which has a vertically moving plunger fitted therein from the upper side thereof. The high-pressure cylinder has at least one opening in the bottommost portion thereof to allow a fluid to flow in or out of the high-pressure cylinder. A hydraulic cylinder for driving the plunger is provided on the top of the high-pressure cylinder. In addition, a migration preventing device is provided between the hydraulic cylinder and the high-pressure cylinder and in contact with the plunger driving shaft to prevent migration of a working fluid leaking out from the hydraulic cylinder to the surface of the plunger fitted in the high-pressure cylinder.

Abstract: An emulsifying apparatus for solid-liquid multiphase flow and a nozzle for solid-liquid multiphase flow, whereby, in a high pressure vessel, there is provided a plate member made of a material with high hardness and having a through-hole sufficiently small compared with a passage of fluids in the high pressure vessel.

Abstract: A surgical suture which is filled with copolymer of tetrafluoroethylene and another polymerizable monomer and has outstanding properties, and a process for preparing the same.