A cylindrical filtration filter includes a cylindrical filter main body. The filter main body is constituted by at least two split filters. Each of the split filters has an arc shape in cross section. Each of the split filters includes a filter element for filtration and side frame bodies provided along side portions of the filter element. The side frame body of one of the two split filters adjacent to each other includes a first facing surface having an uneven shape. The side frame body of the other split filter includes a second facing surface having an uneven shape complementary to the first facing surface. The first facing surface and the second facing surface are fitted to each other when the filter main body is assembled.

A filtering device includes a filter tank, a first drum filter both ends of which are supported, and a cantilever second drum filter. A first end portion of the first drum filter is supported on a first sidewall of the filter tank. A second end portion of the first drum filter is supported on a second sidewall. An end portion of the second drum filter on the supported side is supported on the first sidewall. Between an end portion of the second drum filter on the non-supported side and the second sidewall, a communicating part is formed. A first jetting section jets a fluid against an outer circumferential surface of the first drum filter. A second jetting section is arranged in the vicinity of the second drum filter and jets the fluid against the second drum filter.

A filtration system includes a rotary drum and a media holding band that is configured to hold a filtration media on an outer surface of the rotary drum. The media holding band includes a strap and a connector. The strap includes a first end and a second end opposite the first end. The connector is configured to secure the first end of the strap relative to the second end of the strap.

A filter system of the type having a pressure vessel having an annular filter media therein with a filter wiper piston moved by an air or hydraulic piston actuator. An electrically operated drain valve purges wiped contaminants from the filter media. Pressure sensors provide a signal to a controller of vessel inlet and outlet pressure. Position detectors provide signals to the controller of the drain valve position and filter actuation position. The controller has a computer which computes from the sensor inputs parameters representative, in real time, of entry fluid condition, relative amount of filter contamination, relative amount of filter wear, and relative amount of contaminant removal, and provides signals of the representation to indicators providing visual display thereof.

A filter system of the type having a pressure vessel having an annular filter media therein with a filter wiper piston moved by an air or hydraulic piston actuator. An electrically operated drain valve purges wiped contaminants from the filter media. Pressure sensors provide a signal to a controller of vessel inlet and outlet pressure. Position detectors provide signals to the controller of the drain valve position and filter actuation position. The controller has a computer which computes from the sensor inputs parameters representative, in real time, of entry fluid condition, relative amount of filter contamination, relative amount of filter wear, and relative amount of contaminant removal, and provides signals of the representation to indicators providing visual display thereof.

A pipeline strainer is provided having a cavity, a screen assembly disposed in the cavity, the screen assembly having an open first end and an open second end and a screen axis extending from the open first end to the open second end, a fluid inlet arranged at the open first end of the screen assembly, such that the fluid inlet is open to an interior of the screen assembly, a fluid outlet adjacent the open first end of the screen assembly. The fluid outlet is open to a straining surface of the screen assembly. A fluid axis extends from the fluid inlet to the fluid outlet where the fluid axis crosses the screen axis at or near the fluid inlet.

A pipeline strainer is provided having a cavity, a screen assembly disposed in the cavity, the screen assembly having an open first end and an open second end and a screen axis extending from the open first end to the open second end, a fluid inlet arranged at the open first end of the screen assembly, such that the fluid inlet is open to an interior of the screen assembly, a fluid outlet adjacent the open first end of the screen assembly. The fluid outlet is open to a straining surface of the screen assembly. A fluid axis extends from the fluid inlet to the fluid outlet where the fluid axis crosses the screen axis at or near the fluid inlet.

An air scrubber has an electrically driven fan and a drum having a mat forming a closed circulating band spanning a support of the drum. The mat is electrically rotatably driven about a rotation axis, wherein a lower part of the drum is immersed in a water basin. The mat can be removed from the drum by a movement in the axial direction and pushed back on again by a movement in the axial direction.

A rotary vacuum filter for separation of bisphenol A-phenol adduct crystals from a crystallization liquor is provided. The rotary vacuum filter includes a filter drum with a perforated sector on a lateral surface of the filter drum; a non-polymeric filter cloth attached to the filter drum and covering said perforated sector; and a vacuum pump in fluid communication with an interior surface of the perforated sector. Methods and uses of thereof are also provided.

A rotary vacuum filter for separation of bisphenol A-phenol adduct crystals from a crystallization liquor is provided. The rotary vacuum filter includes a filter drum with a perforated sector on a lateral surface of the filter drum; a non-polymeric filter cloth attached to the filter drum and covering said perforated sector; and a vacuum pump in fluid communication with an interior surface of the perforated sector. Methods and uses of thereof are also provided.