Liquid purifying device

• Main Authors: MATSUMOTO; SATORU, SIMIZU; KAZUO, TANAKA; HISAO, SAKAI; SHIN, YAMAMOTO; OSAMU
• Format: Patent
• Language: English
• Published: 10.07.1990
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; BOTTLES, JARS OR SIMILAR CONTAINERS; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISEPROVIDED FOR; HANDLING THIN OR FILAMENTARY MATERIAL; HUMAN NECESSITIES; HYGIENE; LIQUID HANDLING; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; NOZZLES; OPENING, CLOSING; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; STORING; TRANSPORTING

A device for dispensing a liquid (16), including a container (10) having an interior space (12) accommodating the liquid, a first valve (24, 76, 92, 96, 100, 136, 140, 156) attached to the container, a delivery path (36, 38, 40, 52, 54, 56) having one end submerged in the liquid and extending through the container such that the other end is outside the container, and a second valve (34) disposed in the delivery path for closing and opening the delivery path. The first valve permits a pressurized gas to flow therethrough into the container to raise the pressure within the container, but inhibits a discharge flow of the pressurized gas and the liquid therethrough out of the interior space. The liquid is delivered out of the container through the delivery path, due to the raised pressure within the interior space. The device has a micro-porous membrane filter disposed in a portion of the delivery path which is located upstream of the second valve, as viewed in the direction of delivery of the liquid. The micro-porous membrane filter removes microorganisms from the liquid delivered from the delivery path.