A filter device may include a housing including a first housing part and a second housing part which define a chamber through which a fluid is flowable. The device may also include a filter insert arranged in the housing and configured to filter the fluid. The filter insert may include a seal. The second housing structure may be configured as a web. A circumferential section of the second housing structure may include a contour. The contour may include a recess configured as an interruption in an area of the web. The device may further include a support element arranged on the filter insert interacting with the second housing structure in an area of the contour. The second housing structure may press the first sealing surface against the first housing structure via the support element to seal a clean side from an unfiltered side.

A filter includes a filter media material through which a gas is transportable, a first metal salt immobilized upon the filter media material and a second metal salt immobilized upon the filter media material, wherein the first metal salt and the second metal salt are immobilized upon the filter media material from an aqueous solution comprising the first metal salt and the second metal salt.

A water purifier is provided, including a framework, including a plurality of vertical supporting members respectively vertically arranged in intervals and a metal frame disposed on top ends of the plurality of vertical supporting members, the metal frame having two first through holes; two filtering mechanisms, received in the framework and connected in series, one of the two filtering mechanisms for being connected to a water source; a magnetizer, received in the framework, the magnetizer connected to the other of the two filtering mechanisms in series and being communicable with outside; a shell, covering the framework, including a plastic cover covering the metal frame, the plastic cover including two first pass holes corresponding to the two first through holes and two cover bodies disposed on the two first pass holes, the two cover bodies being capable of sealing the two filtering mechanisms respectively.

A filter element to be inserted into a filter housing, has a filter medium with a rim, wherein the rim is connected to an injection-molded frame or at least one injection-molded frame element, providing a flexibly bendable filter element using a frame made of plastic attached by injection molding, wherein the frame or at least one frame element is made of plastics of different hardnesses in alternation in at least one extension direction, such that the filter element can be bent flexibly at least in part by deforming the filter medium and the frame or frame element.

A water purifier is provided, including a framework, including a plurality of vertical supporting members respectively vertically arranged in intervals and a metal frame disposed on top ends of the plurality of vertical supporting members, the metal frame having two first through holes; two filtering mechanisms, received in the framework and connected in series, one of the two filtering mechanisms for being connected to a water source; a magnetizer, received in the framework, the magnetizer connected to the other of the two filtering mechanisms in series and being communicable with outside; a shell, covering the framework, including a plastic cover covering the metal frame, the plastic cover including two first pass holes corresponding to the two first through holes and two cover bodies disposed on the two first pass holes, the two cover bodies being capable of sealing the two filtering mechanisms respectively.

The disclosure pertains to a spin-on fluid treatment device, including a treatment medium disposed within a housing, a top surface having an internally threaded bore and an outlet tube at least partially disposed inside said threaded bore in a concentric position. The outlet tube can have an externally oriented sealing portion for engaging with a complementary element of an inlet spud of an entity that receives said treated fluids. The outlet tube can be configured as an alignment feature to guide the treatment device onto the inlet spud during installation. The outlet tube can be configured with both an externally oriented sealing portion and an alignment feature. The disclosure also pertains to a system comprising a machine having a treatment device head and a spin-on fluid treatment device, a kit, a spin-on fluid filter cartridge, and a method of mounting a spin-on filter cartridge onto a filter head.

A rotary pressure filter, comprising a filter drum and a housing. A sensor is attached to the housing and emits light through a light-permeable section of the housing in the direction of a filter cake. The sensor receives light reflected from the filter cake through the light-permeable section of the housing. A processing unit compares properties of the emitted light with those of the received light and determines an absolute thickness of the filter cake and/or a change in the thickness of the filter cake over a pre-determined time. The invention further relates to a corresponding method.

A filtration element with a fiber-reinforced shell and a method for fabricating the same. The fabrication method including the steps of: i) coating a multi-strand fiber with a liquid resin, ii) winding the coated fiber about the cylindrical filtration element, and iii) solidifying the resin to form a fiber-reinforced shell. The method is characterized by utilizing a spliced fiber formed by: a) aligning an end of a first multi-strand fiber with an end of a second multi-stand fiber such that the aligned fibers extend along a common axis (X), b) wrapping a layer of a heat-shrinkable film about the outer diameter of the aligned ends of the fibers wherein heat-shrinkable film includes a layer of adhesive that contacts the overlapping strands of the fibers, and c) heating the film so that the film draws inward upon the aligned ends of each fiber and forms an integral bond such that the effective cross-sectional area of a section of fiber.

The disclosure pertains to a spin-on fluid treatment device, including a treatment medium disposed within a housing, a top surface having an internally threaded bore and an outlet tube at least partially disposed inside said threaded bore in a concentric position. The outlet tube can have an externally oriented sealing portion for engaging with a complementary element of an inlet spud of an entity that receives said treated fluids. The outlet tube can be configured as an alignment feature to guide the treatment device onto the inlet spud during installation. The outlet tube can be configured with both an externally oriented sealing portion and an alignment feature. The disclosure also pertains to a system comprising a machine having a treatment device head and a spin-on fluid treatment device, a kit, a spin-on fluid filter cartridge, and a method of mounting a spin-on filter cartridge onto a filter head.

A water filter medium container includes a removable upper cover and a removable lower cover. The container includes a tube defining a filter medium compartment operative to receive a replaceable filter medium. A first containment element may be placed between the upper cover and the tube. A second containment element may be placed between the lower cover and the tube. The water filter medium container may be adapted to be placed in a water container.