Abstract: A filter element mounting structure comprises a switch member arranged on a shell, a limiting member and a driving mechanism; the driving mechanism is arranged on the shell, the limiting member is connected with the driving mechanism, a locking groove is formed on a filter element, the limiting member comprises a plurality of locking positions comprising a first locking position, a second locking position and a third locking position; when the limiting member is in the first locking position, the filter element is mounted in the shell, when the filter element is mounted in the shell, the switch member is touched, and the driving mechanism controls the limiting member to move to the second locking position and lock the filter element; and when the driving mechanism drives the limiting member to move to the third locking position, the limiting member provides an ejecting force to eject the filter element.

Abstract: Disclosed is a filter element butt joint mechanism, including: a fixed base with a mounting cavity; a butt joint base arranged in the mounting cavity and close to an inner end of the fixed base; a filter element including a housing, a head of the housing being inserted into the mounting cavity from an outer end, an insertion pipe being formed at the head of the housing; a limit sliding-clamping mechanism; and a screw transmission mechanism, wherein a groove is formed in the head of the housing, and an insertion pipe is formed in the groove; a boss matched with the groove is formed on the butt joint base, and a plug-hole matching the insertion pipe is formed on the boss.

Abstract: The utility model provides a water purification machine with adjustable discharge capacity. The water purification machine with the adjustable discharge capacity comprises a water purification tank, awater storage tank and a controller, the device comprises a first treatment cylinder, a second treatment cylinder and a third treatment cylinder, the bottom of the first treatment cylinder communicates with a first branch pipe, the other end of the first branch pipe communicates with the bottom of the second treatment cylinder, the top of the second treatment cylinder communicates with a second branch pipe, and the other end of the second branch pipe communicates with the interior of the third treatment cylinder; one end of the raw water inlet pipe is communicated with the top of the first treatment cylinder; and the top end of the first drainage pipe communicates with the bottom of the third treatment cylinder, and the other end of the first drainage pipe communicates with a booster pump.

Abstract: A valve body, including a first cavity, a second cavity communicated with the first cavity through a second water inlet of the second cavity, a valve core and an elastic reset member; the valve core, arranged in the first cavity and coaxial with the second water inlet, includes a piston and a first ejector rod being coaxial with the piston; the piston is configured to open or close the second water inlet; the elastic reset member is configured to press the valve core to move in the axial direction to close the second water inlet. A self-locking level control valve is adopted. The water purifier achieves no reactive power loss, low emission and safe water quality, avoids frequent startup of the water purification system, and solves the technical problem of the “first glass of water” brought by the ultra-low pressure reverse osmosis pumpless water purification system.