Abstract:
PURPOSE: To obtain the title filter which is small-sized, inexpensive, and easy to fit by collecting the function of a flow divider, a main filter, and an auxiliary filter into one unit. CONSTITUTION: Lubricating oil flowing in from an inflow port 31 is mostly passed through a clearance between the wall surface of a case 11 and an auxilia ry filtration part 13, and passed into a filter medium 16 from the periphery of a low-density main filtration part 12. Meanwhile, most of the coarse of for eign matter is removed. The oil then passes through the through-hole of a cylindrical body 15, flows into a flow passage 20, and flows out from an outflow port 30. When the lubricating oil after passing through the main filtration part 12 passes through the throttled part 26 of the flow passage 20, a part of the oil is forcibly passed through a high-density filter medium 25 due to the pressure difference from a space part 24 provided at the outside of the auxiliary filtration part 13, and then joined to the flow in the side passage 20. Consequently, the fine foreign matter in the lubricating oil can be efficiently removed, and the space is also reduced. Moreover, the filter can be conveniently fitted into an internal combustion engine without any further working. COPYRIGHT: (C)1986,JPO&Japio
Abstract:
PROBLEM TO BE SOLVED: To provide a drum type refining or washing apparatus in which refining or washing efficiency of a pulp suspension or a food suspension is remarkably enhanced by filtration function of the rotary drum and by sucking force of a filtrate receptive cell. SOLUTION: This drum type refining or washing apparatus is constituted so as to define a filtrate receptive chamber 34 facing the outer peripheral surface of a rotary drum 1 by a plurality of the filtrate receptive cells 31 arranged in the peripheral direction of the outer peripheral surface of the rotary drum 1 laterally installed, provide a discharge port 32 for discharging the filtrate received in the filtrate receptive cell 31 through a rotary drum-forming wall into a liquid vessel 11 at one end opposite to the rotating direction of the drum of each cell 31, discharge a filtrate received in the filtrate receptive chamber 34 of the filtrate receptive cell 31 through the discharging port 32 into the liquid vessel 11 during an escaping process of the filtrate receptive cell 31 onto the liquid surface 17 of the liquid vessel 11 in the accordance with rotation of the rotary drum 1 and generate the filtrate sucking force directing toward the inside of the receptive chamber 34 at a rotary drum-forming wall to which which the receptive chamber 34 of the cell 31 faces by discharge of the filtrate. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
A device for filtration of a liquid substance, comprising: - at least one filter element (8), through which liquid is intended to be sucked from the liquid substance in order to obtain a filtrate; - at least one vacuum generating fall tube (12), through which filtrate is arranged to fall in order to generate an underpressure required for sucking liquid from the liquid substance through said filter element (8); and - a turbine (17) provided in a lower part (18) of the fall tube (12), this turbine (17) being configured to be driven by the filtrate falling through the fall tube (12) in order to recover energy.
Abstract:
A water filter arrangement (10) for trapping gross pollutants flowing in a storm water system is provided in-line or at end-of-line of a storm water pipe. The arrangement comprises an inlet (14) and an inlet area (18) which directs incoming water (16) into a filter (20). The filter traps entrained gross pollutants and filtered water exits the filter via filter outlet (50). The outlet (50) and surrounding walls (58 and 57) are shaped to create a flow of filtered water which forms a water barrier which restrains the flow of water and gross pollutants from the inlet (14) to the outlet (52). The water barrier is located between the inlet (14) and the outlet (52) preferably closer to the outlet than the inlet. As the filter (20) becomes full and the flow of filtered water exiting the filter decreases the water barrier subsides. When the filter is completely blocked, the water barrier completely subsides and the incoming water and gross pollutants by-pass the filter (20) and flow unrestrained without head loss from the inlet (14) to the outlet (52).
Abstract:
A water filter with an automatic backwash that utilizes an artificially created back pressure to reduce the overall height of the water filter, and a water filter with a typical overall height of less than 3.5 meters for membrane filters and less than 5 meters for media filters, that incorporates a means of automatically creating, in a repeatable fashion, a backwash that removes trapped suspended solids from an upstream side of the filter.
Abstract:
A filter and a method for filtration is based upon a moving filter surface (10) being caused to move through a first filtration region (FF) for separation of a pre-filtrate and a second filtration region (KF) for separation of a clear filtrate. A vacuum is applied on the filtrate side in the clear filtrate filtration region (KF) for the purpose of promoting filtrate passage. According to the invention two filtration zones (FF1 and FF2) with mutually different pressure conditions are established in the pre-filtrate region (FF). In the first filtration zone (FF1) atmospheric pressure or a relatively weak vacuum is present on the filtrate side. In the second filtration zone (FF2), a vacuum involving a pressure which is lower than the pressure in the first filtration zone (FF1) is present on the filtrate side. The pressure change between the filtration zones (FF1 and FF2) is performed in the pre-filtrate region, i.e. before the filter surface has reached the clear filtrate region (KF).
Abstract:
PCT No. PCT/AU97/00710 Sec. 371 Date Apr. 22, 1999 Sec. 102(e) Date Apr. 22, 1999 PCT Filed Oct. 23, 1997 PCT Pub. No. WO98/17875 PCT Pub. Date Apr. 30, 1998A water filter arrangement (10) for trapping gross pollutants flowing in a storm water system is provided in-line or at end-of-line of a storm water pipe. The arrangement comprises an inlet (14) and an inlet area (18) which directs incoming water (16) into a filter (20). The filter traps entrained gross pollutants and filtered water exits the filter via filter outlet (50). The outlet (50) and surrounding walls (58 and 57) are shaped to create a flow of filtered water which forms a water barrier which restrains the flow of water and gross pollutants from the inlet (14) to the outlet (52). The water barrier is located between the inlet (14) and the outlet (52) preferably closer to the outlet than the inlet. As the filter (20) becomes full and the flow of filtered water exiting the filter decreases the water barrier subsides. When the filter is completely blocked, the water barrier completely subsides and the incoming water and gross pollutants by-pass the filter (20) and flow unrestrained without head loss from the inlet (14) to the outlet (52).
Abstract:
A water supply means to pump up the filtrate pumped up from a filtrate tank (13) into a filtrate discharge pipe (3), and a filtrate discharge pump (5) are provided, while an unthickened sludge extracting device (20) is fitted to the bottom of a sludge tank (1), where a high negative pressure acts upon the inside of filter plates (2) to conduct filtration, the unthickened sludge (10) is discharged from the unthickened sludge extracting device (20), and/or the unthickened sludge (10) present near the thickened sludge (11) is displaced by an unthickened sludge displacement means (22, 24, 28,29) so as not to contact the thickened sludge (11), and filtration of only thickened sludge (11) continues so that high-concentration thickened sludge (11) can be obtained without being affected by the water in the unthickened sludge (10).
Abstract:
A water supply means to pump up the filtrate pumped up from a filtrate tank (13) into a filtrate discharge pipe (3), and a filtrate discharge pump (5) are provided, while an unthickened sludge extracting device (20) is fitted to the bottom of a sludge tank (1), where a high negative pressure acts upon the inside of filter plates (2) to conduct filtration, the unthickened sludge (10) is discharged from the unthickened sludge extracting device (20), and/or the unthickened sludge (10) present near the thickened sludge (11) is displaced by an unthickened sludge displacement means (22, 24, 28,29) so as not to contact the thickened sludge (11), and filtration of only thickened sludge (11) continues so that high-concentration thickened sludge (11) can be obtained without being affected by the water in the unthickened sludge (10).