| 摘要 |
The present invention relates to a micro-filter that enables a user to use only a relatively clean liquid by removing impurities or foreign materials from various kinds of liquids. More specifically, the micro-filter comprises: an inlet; an outlet; a filter tank formed therein to include a filter cartridge inserted therein; and a cover body that is coupled with the front end of the filter tank. Locking projections are formed on every surface of the fore end of the filter tank, and locking grooves are formed on every inner surface of the cover body, so that the filter tank and the cover body can be inserted in and rotated toward each other in order to be coupled. A separated watertight packing is inserted in a space between the filter tank and the cover body so that the top and bottom of the watertight packing can be connected and fixed to the filter tank and cover body, respectively. Accordingly, just by rotating the cover body towards the filter tank by a particular angle, the cover body and filter tank can be maintained in a strongly coupled state, and by reversely rotating the cover body, the cover body can be easily separated from the filter tank, so that the cover body can be very conveniently coupled and separated. The watertight packing disposed between the filter tank and the cover body expands according to an increase in pressure inside the filter tank in order to reinforce adhesion, so that a liquid inside the filter can be prevented from leaking to the outside of the filter. The watertight packing is tightened even when an inner pressure is increased, and thus partial pressurization rarely causes deformation or changes in physical properties, so that the service life of the micro-filter can be further extended. |
