Abstract: An ultrafine bubble water manufacturing device includes a whirlpool pump, an ejector, a cascade pump, a branch portion on the downstream side of the cascade pump, a return path which communicates from the branch portion between the ejector and the cascade pump, a flow rate adjusting valve and a first ultrafine bubble manufacturing unit interposed in the return path, an emission path which communicates with the branch portion, a second ultrafine bubble manufacturing unit interposed in the emission path and a control device. The control device controls an air amount adjusting valve, the whirlpool pump, the cascade pump and the flow rate adjusting valve based on the measurement values of a concentration meter for the emission path and first and second pressure gauges and on the downstream and upstream sides of the cascade pump.

Abstract: An ultrafine bubble water manufacturing device includes a whirlpool pump, an ejector, a cascade pump, a branch portion on the downstream side of the cascade pump, a return path which communicates from the branch portion between the ejector and the cascade pump, a flow rate adjusting valve and a first ultrafine bubble manufacturing unit interposed in the return path, an emission path which communicates with the branch portion, a second ultrafine bubble manufacturing unit interposed in the emission path and a control device. The control device controls an air amount adjusting valve, the whirlpool pump, the cascade pump and the flow rate adjusting valve based on the measurement values of a concentration meter for the emission path and first and second pressure gauges and on the downstream and upstream sides of the cascade pump.

Abstract: For manufacture of solid fuels by solidifying processing-object materials containing plastics, waste paper and waste wood, the processing-object materials inputted through an input port 12 are subjected to water injection so that their water content becomes 15 wt % or more, preferably 20 wt % or more, and then kneaded, compacted and extruded in three turns or less, being extruded from molding nozzles 53 of an end face plate 5. The water injection is performed by a water injection nozzle 31 from the input port 12 into a casing 11. Opening and closing of a solenoid valve 33 interposed on a water injection pipe 32 adjoining the water injection nozzle 31 is controlled based on a signal S1 derived from a temperature sensor 55 provided at a molding nozzle 53 of the end face plate.