Abstract:
A filter apparatus comprises a filter element inside a stationary housing. In one embodiment, an inlet manifold extends helically along the outside of the housing. A director blade within the housing causes the unfiltered liquid from the inlet manifold to strike the filter element tangentially in a direction opposing filter element rotation. The filtered liquid passing through the filter element is withdrawn from the interior of the filter element. A stationary vane or deflector inside the filter element parallels the director blade and inlet manifold and forces some filtered liquid radially outwardly through the filter element, at the point where the inward flow impinges on the filter element, for loosening contaminant from the outside of the filter element. Adjacent this point a gathering blade extends inward from the housing toward the filter element in parallelism with the inlet manifold to intercept the rotational flow and loosened contaminant adjacent the outside of the filter element and direct same radially outwardly into a drain chamber, creating a vortex flow therein. The drain chamber is oriented and contoured to cause vortex flow downwardly to direct contaminant particles to a drain. In another embodiment, the helical inlet manifold is omitted and the filter liquid is merely introduced into the housing externally of the filter element by a suitable conduit. In a further embodiment, the guide vane or deflector inside the filter element is omitted and a backwash liquid supply tube is provided within the filter element opposite the gathering blade and has outlet openings facing the filter element wall for direction of backwash liquid flow outwardly through the filter element to force contaminant particles from the exterior of the filter element.
Abstract:
387,339. Filters. BURRELL, B. S., 3502, Fir Street; East Chicago, U.S.A. July 22, 1931, No. 20963. Convention date; June 23, 1930. [Class 46.] A rotary strainer drum comprises two cylindrical shells with coincident apertures and an intermediate straining medium, the apertures in the shell through which the fluid passes first being such as to form pockets for the retention of the solid matter. A straining element, comprising wire gauze held between perforated cylinders 28, 29, Figs. 1 and 2, fits closely in a stationary liner 13 in a casing 9 with its ends in annular bearing sockets sand is rotated by means of a shaft 36. Liquid or gas from an inlet 10 passes through Openings 14 in the liner, and the wall of the straining element and is delivered axially through an outlet 21. A member 37, which is pivoted to rest against a longitudinal section of the element opposite to the inlet 10, directs a portion of the strained fluid through a tapering slot 43 and outward through this section of the element so that impurities, carried round from the inlet 10 in the pockets formed by the apertures in the outer cylinder, are fluahed away through a slot 15 of the liner 13 to a waste outlet 17. In a modification shown in Figs. 4 and 5 the interior of the strainer is divided into compartments by a partition 74. The fluid enters axially and strained fluitl passes away through an outlet 67. A portion of the strained fluid is led back through a passage 90 and directed by a slot 91 in the liner 65 inwardly through a section of the strainer to the compartment behind the partition 74, flushing impurities away through a waste outlet 93. The Specification as open to inspection under Sect. 91 comprises also apparatus shown in Fig. 4 (Cancelled) in which the wire gauze is not protected by an inner perforated cylinder. The fluid enters through a pipe 50 and the main ,part is directed by a partition 59 to pass outwardly through the strainer to an outlet 47. A part, however, passes through apertures 60 and flushes solid matter from that part of the strainer, separated from the outlet 47 by the partition 59, away through a waste outlet 62. This subject-matter does not appear in the Specification as accepted.
Abstract:
An apparatus of cleaning a filter fabric for sludge dehydration is provided to simplify and miniaturize structure of the apparatus and reduce power loss and operating noise by reciprocating a cleaning water spray using a belt drive, and reduce a reciprocating stroke of the cleaning water spray to not more than a half of the width of the filter fabric by installing a plurality of spray nozzles in the width direction of the filter fabric. An apparatus of cleaning a filter fabric for sludge dehydration comprises: a base frame(100) horizontally installed in the width direction above a filter fabric(1) that is transferred; a guide bar(101) installed along the longitudinal direction on the base frame; a movable support(125) movably installed on the guide bar; a cleaning water spray(130) which is connected to the movable support, which has a water supply pipe(131) connected to one side thereof, and which has spray nozzles(135) connected to the other side thereof such that the spray nozzles face the filter fabric; and a transfer unit for reciprocating the movable support along the guide bar, wherein the transfer unit includes a motor(112) installed at one side of the base frame, a drive timing gear(110) connected to an output shaft of the motor, a driven timing gear(111) spaced from the drive timing gear in a predetermined distance in the width direction of the filter fabric, a timing belt(113) connected between the drive timing gear and the driven timing gear, a connecting rod(121) of which one side is connected to the timing belt, and which has a connecting shaft formed on the other side thereof, a lateral moving guide(124) installed on the movable support in the lateral direction relative to a transfer path of the timing belt, and a movable block(123) movably installed on the lateral moving guide and rotatably connected to the connecting shaft of the connecting rod.
Abstract:
A rotary disc filter is provided with an integrated backwash and chemical cleaning system. In one mode of operation, backwash is directed through a control valve to one or more nozzles for spraying the backwash onto the filter media forming a part of a rotary disc filter. In a second mode, a chemical cleaning mode, the pump directs backwash through an eductor that induces a chemical into the inductor which is mixed with the backwash to form a backwash-chemical mixture that is sprayed onto the filter media. A control system is used in conjunction with the backwash and cleaning systems to monitor process information and/or filter media properties and to determine when to perform backwashes and regenerative cleanings in order to optimize the performance of the filter system.
Abstract:
A laundry treating machine is provided. The laundry treating machine may include a tub to receive wash water, a drum rotatably provided in the tub, an air supply device to supply air to the tub, a lint filter to filter lint from the air circulated by the air supply device, a filter cleaning device to supply cleaning water to the lint filter to remove the lint from the lint filter, and a cooling water supply device to supply cooling water to an inner surface of the tub such that moisture contained in air is condensed at the inner surface of the tub. A laundry treating machine (100) is provided. The laundry treating machine (100) may include a tub (120) to receive wash water, a drum (130) rotatably provided in the tub (120), an air supply device (160) to supply air to the tub (120), a lint filter (162) to filter lint from the air circulated by the air supply device (160), a filter cleaning device (200) to supply cleaning water to the lint filter (162) to remove the lint from the lint filter (162), and a cooling water supply device (300) to supply cooling water to an inner surface of the tub (120) such that moisture contained in air is condensed at the inner surface of the tub (120).