A modular water filtration system including a filter manifold and a filter cartridge is provided. The filter manifold includes a body, a first arm member, a second arm member, a brace, and a slot positioned on the brace. The filter cartridge includes a cartridge head and a fin member protruding upwardly from the cartridge head, and the fin member is sized to be received within the slot of the filter manifold. The filter cartridge is adapted to engage the filter manifold through a horizontal force when the fin member is aligned with the slot.

A water purifying filter coupled to a mouth (20) of a beverage container (10) in which water or drinking water is stored, includes: a tubular housing (100) having a first screw (110) for coupling to a screw part (21) provided at the mouth of the beverage container that is formed on an inside of a lower end portion thereof and a second screw (120) for coupling a cap (30) of the beverage container that is formed on an outside of an upper end portion thereof; a first filter (200) disposed inside the housing to primarily purify the drinking water discharged from the beverage container; a second filter (300) disposed at an upper end portion of the first filter to secondarily purify the drinking water primarily purified through the first filter; and a cover unit (400) inserted into a lower end portion of the housing.

A household water purifier includes a main unit and a filter assembly arranged in the main unit. The filter assembly includes a composite filter core. The composite filter core includes a filter bottle and a filter element located in the filter bottle. The filter element is of a separated structure. In the household water purifier, the filter element is located in the filer bottle; during use, when the filter element needs to be replaced, the filter element can be directly taken out of the filter bottle for replacement; Furthermore, the filter element itself is of a split structure. It is no need to replace the filter element as a whole, just some failed components of the filter element need to be replaced, which further improves convenience of replacement and maintenance of the filter core of the water purifier, and saves maintenance and use costs of the water purifier.

A filtering time control method includes testing water quality to obtain a water quality status value, determining whether a current filtration meets requirements. Based on whether the current filtration meets the requirements, setting a duration of the next filtering based on the current filtration duration. Adaptive adjustment of the duration of filtration may ensure a filtering effect while saving water resources.

The disclosure relates to a filter head comprising a housing having one inlet and at least one outlet for being connected to an on-site water pipe. A filter candle having a filter candle inlet and at least one filter candle outlet can be installed in the filter head, and the filter head has means for setting a desired degree of softening by setting a blend ratio. The filter head comprises a flow meter and at least one conductivity measuring device, in particular a conductivity measuring cell, and the filter head has an interface for data transmission to an external unit and an integrated computing unit.

A flocculation filter is provided. The flocculation filter includes a filter layer having openings that pass water and trap flocs is provided. The flocculation filter also includes a flocculant layer disposed on at least a portion of the filter layer.

An ion exchanger includes a housing and a cartridge. The housing has an inlet port, through which coolant flows in, and an outlet port, through which the coolant flows out. The cartridge is detachably attached to the housing. The cartridge is filled with ion-exchange resin. The ion exchanger is configured to remove ions from the coolant through ion exchange when the coolant flowing in the housing passes through the ion-exchange resin. The cartridge includes a bypass route that causes some of the coolant that has flowed into the housing to bypass the ion-exchange resin and flow to the outlet port.

A filter for gravity-fed applications, having filter media with a hollow center, the filter being generally prone to a degradation or cessation in fluid flow due to air entrapment or air lock within the filter housing cavity, which develops during filtering. A diffuser element is introduced to pierce the entrapped air bubble, the diffuser element being an elongated structure connected to the filter housing top end cap and extending through the entrapped air bubble to the filter media.

A flow-electrode cartridge unit and a submerged flow-electrode capacitive deionization device using the same are proposed. The flow-electrode cartridge unit includes a pair of porous current collector plates arranged to face each other in a spaced apart state from each other in a first direction, a pair of ion separation membranes positioned on respective outer surfaces of the porous current collector plates in the first direction, a channel frame for wrapping around the pair of porous current collector plates and the pair of ion separation membranes to expose each of the ion separation membranes in the first direction, thereby forming a flow electrode channel between the pair of porous current collector plates, a pair of communication holes formed in the channel frame and communicating the flow electrode channel to an outside, and an electrode terminal formed in the channel frame and electrically connected to the porous current collector plates.

A filter cartridge device is disclosed, which includes a water stopping assembly (13) and automatic water locking assemblies (22); wherein the water stopping assembly (13) can control water supply or water cut-off of the filter cartridge device, and prevent residual water inside a filter cavity (111) from flowing out during the process of detaching the filter cartridge device; the automatic water locking assemblies (22) can control water supply or water cut-off between the filter cartridge device and an external pipe, and prevent water inside the external pipe from flowing out during the process of detaching the filter cartridge device; and the water stopping assembly (13) controls water supply or water cut-off of on its side. In addition, a water purifier comprising the filter cartridge device is also disclosed.