Patent ID: 9056269
Filing Date: 2015-06-16
Classification: B01D

Abstract:
1. A detachable and replaceable water filter assembly comprising: a filter core cover; and a filter cartridge; wherein the filter core cover and the filter cartridge are fastened together; the filter core cover comprises a holder, a nut cap, an upper ceramic piece, a lower ceramic piece, and a separate rotating shaft; the nut cap, the upper ceramic piece, the lower ceramic piece, and the rotating shaft are connected; the nut cap is mounted inside the holder; the upper ceramic piece comprises a first through hole; the lower ceramic piece comprises a corresponding second through hole; the lower ceramic piece comprises a first groove; the rotating shaft comprises a first projection for cooperation with the first groove and is used to drive the lower ceramic piece to rotate; the first projection inserts into and engages with the first groove, the rotating shaft drives the lower ceramic piece to rotate through an engagement of the first groove and the first projection; the rotating shaft comprises two opposite limiting projections at a top surface of the rotating shaft for cooperating with two opposite limiting grooves of the holder for restricting the relative rotation angle between the upper ceramic piece and the lower ceramic piece to be less than or equal to 90 degrees; the filter cartridge comprises a snap button, a water division end cap and a barrel; the snap button and the water division end cap are rotated to fasten together; the barrel has a filter core; the water division end cap is mounted at one end of the filter cartridge, and bonded to the filter core; the water division end cap is cooperated with the rotating shaft; the snap button covers the barrel; the water division end cap includes a water inlet channel and a water outlet channel for cooperating with a water inlet and a water outlet of the holder respectively; the water inlet channel and the water outlet channel are independent and disconnected; the upper ceramic piece comprises an aperture in connection with the water outlet; the rotating shaft further comprises a third through hole for cooperation with the second through hole; the third through hole is used to connect the second through hole and the water division end cap; wherein the nut cap comprises a notch, and the upper ceramic piece comprises a projection for cooperating with the notch which is fixed in the holder; and only the notch and the projection form as a connection between the nut cap and upper ceramic piece; wherein, when the water filter assembly is in an inoperative state, the water inlet channel is disconnected with the water inlet, the water outlet channel is disconnected with the water outlet, and the first through hole is disconnected with the second through hole; and wherein, when the water filter assembly is in an operative state, the water inlet channel is connected with the water inlet; the water outlet channel is connected with the water outlet, and the first through hole is connected with the second through hole; wherein after installing the filter core in the filter cartridge, the filter core cover is rotated to snap together with the filter cartridge; the rotating shaft in the filter core cover is rotated being driven by the rotation of the filter cartridge; the rotating shaft rotates 90 degrees synchronously after the filter cartridge rotates 90 degrees; the lower ceramic piece rotates 90 degrees relative to the upper ceramic piece driven by the rotating shaft; the first through hole, the second through hole and the third through hole are connected and in an open state; external water enters into the filter core cover through the water inlet; and passes through the second through hole, the third through hole, and the water inlet channel of the water division end cap; and enters into the internal of the filter core from the external of the filter core to filter; filtered water passes from the filter core, the water inlet channel of the water division end cap, and the water outlet of the holder to outflow; and wherein when the filter cartridge is rotated reversely, the upper ceramic piece rotates 90 degrees relative to the lower ceramic piece, the first through hole and the second through hole are disconnected and closed to water flow; the filter cartridge is detached from the filter core cover for repair or replacement.