Abstract:
552,302. Filters. PATERSON ENGINEERING CO., Ltd., and SMALLEY, W. Oct. 24, 1941, No. 13709. [Class 46] In a filter having a sand &c. bed a and a spillover wall b to prevent wastage of sand during cleansing by a reverse flow of wash water, the wall b is provided just above the bed a with one or more apertures d adapted to be opened and closed by means of one or more rollers or pads e operated by toggle lever or other mechanism to permit removal of the silt-laden waste water remaining above the bed after the sand has settled. The rollers or pads may be covered with rubber or like material. The impurities may be prevented from settling and washed through the apertures d by the continued application of wash water at a reduced rate, assisted, if desired, by a cross current of water. As shown, rubbercovered pads e of channel form are carried by pivoted arms g and operated by toggle lever mechanism h connected through link and lever mechanism k, l and bevel or screw-gear with a hand wheel i or a small electric motor under push button control. Alternatively, the rod k may be operated by a solenoid. Rollers may be adapted to be rolled over the surface of the wall b. The opening and closing of the apertures may be effected automatically in dependence on the rate of flow of wash water as by connecting the wash water inlet to a lightly-loaded diaphragm or other valve controlling the flow of pressure fluid to and from a cylinder having a piston connected with the pads &c. The rise in pressure of the wash water may also be utilized to close the electric circuit. Specifications 293,534, [Class 46], and 403,523 are referred to.
Abstract:
A saturated layer stormwater filtering system with down-flow layered multimedia filters is disclosed. The filtering system may include an upflow pretreatment chamber and a subsequent filtration chamber. It also includes a snorkel pipe as an adjustable head control or internal baffles. The system incorporates gravity powered partially saturated stormwater media filters to harness the potential energy of stormwater from downspouts and pumped flows from stormwater catchments to drive the polluted stormwater in a hydraulically controlled fashion by gravity through a series of filter media layers.
Abstract:
An apparatus for separating solids from a drilling fluid that includes a basket having two opposed spaced-apart side walls having first ends and second ends, the first ends spaced apart by an end wall connected to each of the side walls, the basket further including a bottom wall through which a fluid outlet passage is defined, a plurality of screening surfaces having a front edge and a back edge and positioned within the basket between the side walls with each screening surface spaced apart vertically from adjacent screening surfaces and the back edge spaced apart from the end wall of the basket, wherein the back edge of each screening surface is lower than the front edge of the corresponding screening surface, a plurality of weirs, each weir retained along the back edge of a corresponding screening surface and spaced apart from the end wall to define a fluid passage between each weir and the end wall, wherein each weir has a top edge extending to a weir height above the back edge of the corresponding screening surface and the top edge is lower than the front edge of the corresponding screening surface, at least one flow director catching unseparated drilling fluid in the fluid passage and directing the unseparated drilling fluid onto a lower screen, and wherein fluid in the fluid passage between the lowermost screen and the end wall is directed to a spillover fluid outlet is disclosed.
Abstract:
A pump and filtration system for a pond or pool. The filtration mechanism has a filter member in which water with suspended solids in it is forced through the filter member to clean the water. The filter member is positioned in a housing and separated from the walls of the housing by a screen-type separation member. A water jet member increases the flow of the water entering the housing. The filter member is cleaned and solids are flushed from the housing in a backflush procedure.
Abstract:
Screen apparatus comprising a screen (10) which allows fluid to pass through it whilst providing a barrier to non-fluid matter in the fluid. A jet outlet (22) is arranged to direct a jet of fluid across that side of the screen (10) on which such matter would otherwise tend to collect when the apparatus is in use.
Abstract:
A catch basin filtration system is disclosed. A filter body is dimensioned to fit within a drain inlet forming a trough or reservoir obstructing at least a portion of the inlet. The filter body is supported by a filter body support dimensioned to cooperatively engage with the interior walls of the inlet and with the filter body to substantially maintain said filter body in a pre-selected shape and position within the inlet. One or more connectors removably connect the filter body to the filter body support. One or more adjustable high fluid flow bypasses prevent the system from backing up and flooding surrounding areas during periods of high fluid flow.
Abstract:
A catch basin filtration system is disclosed. A filter body is dimensioned to fit within a drain inlet forming a trough or reservoir obstructing at least a portion of the inlet. The filter body is supported by a filter body support dimensioned to cooperatively engage with the interior walls of the inlet and with the filter body to substantially maintain said filter body in a pre-selected shape and position within the inlet. One or more connectors removably connect the filter body to the filter body support.