Abstract

A fine-bubble mixed liquid producing apparatus 1 includes a reservoir 4 and a bubble feeding means 6 for feeding bubbles to a liquid L stored in the reservoir 4, wherein the bubble feeding means 6 includes a rotary cylinder 20 having an emitting part 22 on the outer circumferential surface, the emitting part 22 for being rotationally driven by a drive means 10, a circulating means 40 for drawing out the liquid L stored in the reservoir 4 and feeding the liquid L from the emitting part 22 to the reservoir 4, and a gas-liquid mixing part 50 for mixing bubbles with the liquid L circulated by the circulating means 40. This apparatus enables a fine-bubble mixed liquid to be efficiently produced.

IPC Classes  ?

• B01F 3/04 - Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed gases or vapours with liquids
• B01F 5/10 - Circulation mixers
• B01F 7/18 - Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a vertical axis with paddles or arms
• B01F 7/28 - Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a vertical axis with cylinders
• B01F 5/02 - Jet mixers
• B01F 3/08 - Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed liquids with liquids; Emulsifying

Abstract

An apparatus 1 for producing a fine air bubble mixed liquid, which is provided with a liquid storage tank 4 and an air bubble supply means 6 for supplying air bubbles to a liquid L that is stored in the liquid storage tank 4, and which is configured such that the air bubble supply means 6 has a rotary cylinder 20 which has an ejection part 22 on the outer circumferential surface and is rotated by a drive means 10, a circulation means 40 which takes out the liquid L stored in the liquid storage tank 4 and supplies the liquid L to the liquid storage tank 4 through the ejection part 22, and a gas-liquid mixing part 50 which mixes air bubbles into the liquid L that is circulated by the circulation means 40. This device is able to efficiently produce a liquid into which fine air bubbles are mixed.

IPC Classes  ?

• B01F 3/04 - Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed gases or vapours with liquids
• B01F 5/02 - Jet mixers
• B01F 5/10 - Circulation mixers

Abstract

A furnace for heat treatment of metal comprises a heating section (20) provided within a heating chamber (10), the heating section (20) being provided with a heat generating body which uses carbon and generates heat by conducting a high-frequency electric current to a coil having an adjustable pitch. A cooling chamber (80) for cooling the metal which has been heated by the heat generating body is provided below the heating chamber (10) so as to communicate with the heating chamber (10) through a connection section (60). A water-cooled vertically movable shaft (90) capable of entering the heating chamber (10) while supporting the metal to be heated is provided so as to penetrate through the bottom of the cooling chamber (80). A gas introducing pipe (81) for introducing gas into the cooling chamber (80) is provided in the cooling chamber (80), said gas being used to cool the heated metal having been moved into the cooling chamber (80) from the heating chamber (10) while being supported by the water-cooled vertically movable shaft (90). The configuration reduces the running cost of the furnace and achieves an increased cooling speed.

IPC Classes  ?

• F27D 9/00 - Cooling of furnaces or of charges therein
• C21D 1/00 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
• F27B 5/02 - Muffle furnacesRetort furnacesOther furnaces in which the charge is held completely isolated of multiple-chamber type
• F27B 5/16 - Arrangements of air or gas supply devices
• F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer