An apparatus for safely enabling air filtering by temporarily joining a box fan to a replaceable air filter includes: (a) an air chamber frame with a rear portion that is configured to accommodate the replaceable air filter, (b) a frame stabilizing means that includes a front mounting platform which is configured to temporarily hold a box fan that is oriented to pull air through the filter, (c) a gasket that is configured to attach to the frame's front surface and minimize air flow around the gasket and into the frame, (d) a vent door located in the frame and configured to open to allow air to enter the frame's interior region when the filter is clogged, (e) an alarm mechanism attached to the vent door and configured to provide a signal when the door is been opened, and (f) an alarm device configured to receive the alarm mechanism's signal and provide an alarm that the air filter needs replacement.

Various embodiments provide for a filter assembly. The filter assembly includes a filter housing, a filter element, and a cover. The cover includes a first cover end and a second cover end disposed axially away from the first cover end. A second coupling member is adjacent to the second cover end. The second coupling member is configured to engage a first coupling member to couple the cover and the filter housing. A biasing member is coupled to the first cover end. An interface plate is configured to press against a first endplate of the filter element to secure the engagement of a first engagement portion of a filter seal member of the filter element and a second engagement portion of a housing seal member of the filter housing.

A filtration assembly for a vehicle fluid extends along an axis and includes a filtering cartridge and an auxiliary device. Cartridge members and device members are configurable in engagement and disengagement configurations. The cartridge members are positioned on an end plate of the filtering cartridge and include blocking groups, each having a stem and a tooth positioned at a stem end projecting laterally defining, with the stem, an engagement undercut. The device members include a housing region and a lug. In the engagement configuration, the tooth snap-fits in the respective housing region, and the lug is housed in the undercut. The cartridge and device members include a cartridge and device edges to engage in rotary disengagement, in which the cartridge edge and the device edge identifies a ramp. In engagement between the cartridge and device edges, the blocking group elastically flexes radially so the tooth leaves the housing region.

A filtration device may include a filter element and a housing that is configured to receive the filter element. The filter element may include a casing having a first outer surface and a flange connected to the first outer surface. The flange may include a plurality of snap members. A snap member, of the plurality of snap members, may include a fulcrum projecting from the flange and a lever mounted on the fulcrum. The housing may include a shell having a second outer surface and a plurality of ramp members. The plurality of ramp members may be fixedly connected to the second outer surface and may be configured to engage the plurality of snap members of the filter element. A ramp member, of the plurality of ramp members, may include an angled surface that extends from the second outer surface at an acute angle relative to the second outer surface.

A filtration device may include an adapter, a filter element, and a housing. The adapter may include a collar having an upper rim and a lower rim, a plurality of locking tabs extending from the upper rim, and a plurality of snap members extending from the lower rim. The filter element may include a casing and a plurality of receptacles connected to and arranged around a first outer surface of the casing. The plurality of receptacles are configured to receive the plurality of locking tabs. The housing, which is configured to receive the filter element, includes a shell and a plurality of ramp members that are connected to a second outer surface of the shell. The plurality of ramp members are configure to engage the plurality of snap members.

An end cap assembly comprises a first connector element comprising at least two snap arches, each snap arch including a snap tooth lock; and at least two snap arms each including a snap tooth; the first connector element having a central cavity closed off with a wall, or having a central opening with side walls having an internal thread; a second connector element comprising at least two snap arches, each connector snap arches including a snap tooth lock; and at least two snap arms, each of the at least two snap arms including a snap tooth; the second connector element having a central opening, and an annular channel for receiving an end of a hollow cylindrical filter element; and, a gasket arranged between the first connector element and the second connector element, the gasket having a central opening; wherein the connector elements are lockably engageable with each other when placed in contact with each other and axial force is applied such that each first connector snap tooth is retained in each respective second connector snap tooth lock, and each second connector snap tooth is retained in each respective first connector snap tooth lock.

A dust filtering and collection system for filtering dust and other particles from an incoming air stream generally used for conveying granular material, the filtering system receives the air from within the tank trailer, pre-separates the heavy dust particles and other debris at the bottom of a filter housing, without its impingement upon the filter tube(s) contained upwardly therein, and then passes the partially filtered air upwardly through filter tube(s) for purifying the air before discharge to atmosphere. The filter housing for the system includes a cylindrical housing upwardly, an integral cone shaped housing at its bottom, into which the dust particles settle, it has a transverse plate at its upper segment, which supports the filter tube(s), an air inlet being centrifugally and integrally formed at the bottom of the cylindrical member of the filtration system.

An air purifier comprising a main unit, a base assembly below the main unit, a filter screen assembly inside the main unit and an air supply device above the filter screen assembly, wherein the base assembly comprises a carrier part on which the filter screen assembly is provided and a lifting part that is located below the carrier part and abuts the carrier part. T the lifting part comprises a pull-push part and a lifting assembly configured such that when the pull-push part makes a translation in a first direction, the lifting assembly controls the carrier part to descend and separate the filter screen assembly from the air supply device, and when the pull-push part makes a translation in a second direction opposite the first direction, the lifting assembly controls the carrier part to rise and achieve a sealed connection between the filter screen assembly and the air supply device.

An apparatus and a method are provided for an air filter configured to be mounted onto air inlets of turbochargers and superchargers. The air filter comprises a proximal base including an inlet receiver configured to receive an air inlet, a clamp to secure the air inlet within the inlet receiver, and a first opening aligned with a screw mechanism of the clamp. A filter medium fastened to the proximal base is configured to remove particulate matter and other contaminates from an incoming air stream. A distal end cap fastened to the filter medium comprises a second opening aligned with the first opening. A conduit within an interior cavity of the air filter is disposed between the first opening and the second opening, facilitating tightening and loosening the clamp by extending an appropriate tool through the interior cavity so as to engage the screw mechanism of the clamp.

An upright two-stage dust collector includes a base unit, a suction blower unit, a filter unit and a dust collecting unit. The suction blower unit has a suction blower body. The filter unit includes a filter body, a coarse particle dust filter cartridge disposed in the filter body, and a fine particle dust filter element disposed in the coarse particle dust filter cartridge. The fine particle dust filter element is coaxially inserted in the coarse particle dust filter cartridge. The air after the first dust collection is filtered by the fine particle dust filter element to perform the second dust collection. Through the combination of the above units, in addition to a two-stage dust collecting effect, the dust collector occupies less space and can be used conveniently.