Abstract: An apparatus and process for removing liquid from a liquid-solid mixture by forcing the liquid-solid mixture under low pressure through a filter means attached to filter support doors to form a filter cake, supplying compressed air into an expandable space to deform an elastomeric bladder which squeezes additional liquid out of the cake, and opening the filter support doors to cause discharge of the filter cake from the filter means.

Abstract: The present invention provides a liquid filtering apparatus wherein solids suspended in the liquid are accummlated to form a cake on the filter media as the liquid passes through the media. Upon the buildup of such solids, pressurization upon the liquid forces remaining liquid through the media. Such pressurization is inactivated upon excessive cake buildup, and a conduit helically wound about the outside of the filter media is expanded by air pressure. The conduit is attached at various points about its length so that it forms chord lines between such connection points. Such expansion and chording of the conduit breaks the cake from the media.

Abstract: This disclosure relates to a filtering apparatus which incorporates a flow deflector, to divert an incoming flow of the fluid to be filtered, which serves as a device to cause one or more multifaceted bead members to circulate throughout and to impinge upon every surface of an inlet chamber of the filter apparatus so that contaminents tend to be removed from the filter inlet surface portion of the inlet chamber.

Abstract: A filter apparatus for removing contaminants from a fluid comprises a cylindrical body and first and second caps coupled to first and second ends of the cylindrical body. Each of the caps has an aperture therein for the flow of fluid therethrough and first and second filters are positioned within said first and second caps respectively such that a filter medium is housed within said cylindrical body and restrained by said first and second filters. The first and second filters are continuously cleaned by impinging multifaceted beads. The filter apparatus is entirely symmetrical and either the first or second cap may serve as an inlet cap while the other cap serves as an outlet.

Abstract: In the case of an apparatus for sucking up and holding sludge, use is made of a sludge tank which may be evacuated. The sludge tank has a sludge door and a water outlet able to be put into operation separately from the door. The water outlet is made up of an overflow line joined up with water in the sludge tank by way of a filter unit, the filter unit having a cleaning unit with at least one nozzle for jetting water onto the filter unit.

Abstract: A slurry separator utilizes the power inherent in the pressurized slurry from the slurry pump through a reaction nozzle to drive a rotor, with the slurry distributed through the nozzle being distributed over the surface of a conical grid. The rotor structure also drives squeegee-like blades which scrape the solids downward inside the cone readying screen for the next discharge, and then sweeping them down into a cylindrical auger chamber where they are compacted downwardly against an inverted conical floor to further squeeze moisture through the sides of a housing cylinder. The conical floor of the compacting cylinder presses up against the particulates to be compacted with a resistance that is proportional to the speed of the rotor, achieved through the use of a centrifugal governor. This action makes it tolerant to variations in nozzle flow volume (pressure) and converts energy output into optimum separation.

Abstract: A backwashable filtering device comprising a housing, a main filter in the housing, an inlet for receiving liquid into the housing and an outlet for discharging liquid from the housing. A rotatably mounted spraying member is disposed in the main filter which is preferably cylindrical in shape for receiving liquid and discharging it against the inner surface of the filter to backwash and cleanse the filter. Filtering passage is defined in the housing between the inlet and the outlet for directing water against an outer surface of the main filter for the purpose of filtering the water. Valves are provided in the housing associated with the main filter for selectively directing liquid toward the opposite sides of the main filter for the purposes of filtering and backwashing respectively.

Abstract: The disclosure is directed to apparatus for filtering a flow of melted plastic prior to use in an injection molding machine. The apparatus includes a cylindrical filter screen disposed in a cylindrical chamber to define an inner inlet chamber and outer outlet chamber. The incoming plastic enters the interior of the filter screen through an axial passage formed in the screen side wall. The material is thereafter forced radially outward through small filtration openings formed through the screen side wall, leaving filtered material and contaminants at the inner wall. Purging or cleaning of the filter screen is effected by a reciprocating shaft that passes through the cylindrical filter screen and partly defines the inner chamber. The shaft carries an imperforate cylindrical sleeve which slides axially through the inner chamber, wiping the inner cylindrical surface of the filter screen as it goes.

Abstract: A skimming system for removing a floating layer from a body of liquid which includes a skimmer for semi-immersion in the liquid having an irregularly shaped hollow interior compartment supported for self-adjustable tilting movement from a recumbent position generally parallel with the reservoir surface to an inclined position admitting the floating layer to the compartment. A self-cleaning assembly operable in response to skimmer movement protects the skimmer inlet from debris entry and includes cleaning fingers cantilevered out from the skimmer over the opening protruding between a grid of upright blocking baffles.

Abstract: An apparatus and process for tubular membrane separation, such as reverse osmosis or ultrafiltration, with an arrangement for removing undesirable deposits from the semipermeable membrane surfaces. For the removal of the deposits, elastic elements are passed, together with the feed solution being treated, through the tubular modules lined with semipermeable membranes, separated from the solution, and are recycled with a fresh supply of the solution from a tank, so that the semipermeable membranes are continuously cleaned while separating a part of the solution by permeation therethrough.

Abstract: A weed screen and trash eliminator for irrigation systems utilizing open ditches or canals for transmission of water. A rigid frame supports a stationary screen having a planar surface. A front trough directs water within a ditch onto the upper screen surface, which is inclined slightly from its front edge to its rear edge. The water passes through the screen, leaving weeds and other debris on the upper screen surface. Endless conveyors continuously move a transverse bristle brush along working flights that span the length of the screen. The conveyors are powered continuously in a direction such that the brush moves along the screen from front to back. A recessed catch pan is fixed across the frame immediately adjacent the rear edge of the screen to receive materials swept from the screen by the brush.

Abstract: A liquid treating unit includes a module comprising a channel member for collecting a product liquid for recovery; a semipermeable membrane member liquid-tightly joined to the channel member and made from a semipermeable membrane strip by alternately folding the strip longitudinally thereof to provide feed liquid passages and product liquid passages on the front and rear sides of the membrane respectively, each pair of product liquid passages defining leaf portions of the membrane being adhered at each end of the passage to liquid-tightly close the product liquid passage only; spacers inserted into the feed liquid passages; and a covering member surrounding the outer periphery of the membrane member. The feed liquid passages therefore have a regulated cross sectional area to permit the feed liquid to flow through the passages in parallel and straight direction at an increased speed relative to the membrane surface, ensuring a reduction in dead space and efficient use of the membrane.

Abstract: The present invention relates to a tubular membrane separation apparatus used for purification of turbid water, concentration of liquid material, sea-water desalting and so on, which is characterized by a feedwater line, a tubular membrane member adapted to concentrate a feedwater, a concentrated-water line which is disposed in such a manner that the direction of flow therein is opposite to the direction of flow in the feedwater line and a cleaning ball delivery member, said cleaning ball delivery member including a stationary member disposed to cross the feedwater line and concentrated-water line and divide each of the two lines into an upstream and downstream segment, the stationary member being provided with passageways extending in parallel with each other and respectively adapted to communicate the upstream segment of the feedwater line with the downstream segment thereof and the upstream segment of concentrated-water line with the downstream segment thereof, a movable member which comprises at least one

Abstract: An apparatus and method for dewatering rubber crumb in which a slurry of rubber crumb and fines overflowed from a feed tank onto a curved screen for dewatering is subjected to a change in direction away from the screen by a fixed baffle in the feed path upstream of the screen and is then redirected by a second, adjustable baffle onto the screen with the second, adjustable baffle also determining the spacing between the screen and the second baffle and thereby restricting flow from the curved screen onto a coated chute which delivers partially dewatered rubber crumb from the apparatus.

Abstract: The present invention relates to a method and apparatus for treating waste water on ships, and more particularly to a method and apparatus for treating waste water on ships in a closed system.

Abstract: The disclosure relates to a self-cleaning strainer or filter that has a freely rotatable agitator means mounted within an annular straining element. The agitator means consists of a series of multi-bladed elements of progressively increasing diameter that creates a turbulent flow that prevents material from adhering to the screen.

Abstract: An in-line self-flushing filter comprises a cylindrical filter body within a housing, a rotatable member defining a purging chamber having an inlet opening close to and facing the cylindrical surface of the filter body, a purging conduit fixed to the rotary member, and a valve between the purging chamber and the purging conduit. The latter valve is normally closed but is automatically opened by a diaphram sensor sensing the difference in pressure between the filter inlet and outlet to establish communication between the purging chamber and purging conduit and thereby to effect a reverse flow of the fluid through the filter body into the purging chamber and out through the purging conduit. The outlet end of the purging conduit is eccentric to the axis of rotation of the rotatable member so as to rotate same by the reaction force of the fluid exiting from the purging conduit, and thereby to cause the inlet opening of the rotatable member to sweep along the complete cylindrical surface of the filter body.

Abstract: A self-cleanable filter, comprises: a housing having a fluid inlet, a fluid outlet, and a dirt purging opening; a filter body within the housing and having a surface facing the inlet side of the housing; and a cleaning body within the housing and movable from a home position along the cylindrical surface of the filter body for cleaning same. The cleaning body comprises a first section defining an internal chamber having an inlet opening facing the surface of the filter body to be cleaned and movable along said surface, and a second section closing the dirt purging opening when the cleaning body is in its home position. The second section has an outlet opening communicating with the internal chamber and located within the housing in the home position of the cleaning body but movable through the housing purging opening to a position externally of the housing upon the movement of the cleaning body for cleaning the filter.

Abstract: Filtering solids from waste water liquids and cleaning, degreasing and restoring the filtering media through the use of cleaning compounds forced up through the filtering substances.

Abstract: A screening apparatus comprising a water receptacle, a screen frame mounted on the water receptacle with a screen covering the opening of the water receptacle, a sprinkler for sprinkling water into the screen frame and a vibrator for expanding and contracting air within the water receptacle to thereby vibrate the screen.

Abstract: A self-cleanable filter, comprises: a housing having a fluid inlet, a fluid outlet, and a dirt purging opening; a filter body within the housing and having a surface facing the inlet side of the housing; and a cleaning body within the housing and movable from a home position along the cylindrical surface of the filter body for cleaning same. The cleaning body comprises a first section defining an internal chamber having an inlet opening facing the surface of the filter body to be cleaned and movable along said surface, and a second section closing the dirt purging opening when the cleaning body is in its home position. The second section has an outlet opening communicating with the internal chamber and located within the housing in the home position of the cleaning body but movable through the housing purging opening to a position externally of the housing upon the movement of the cleaning body for cleaning the filter.