摘要:
A disk-type filter comprising a housing having an inlet connectable to an upstream pipe and an outlet connectable to a downstream pipe, and a stack of filter units disposed within said housing for separating solid particles from a fluid flowing between filter units in said stack of filter units from an upstream side of said stack of filter units to a downstream side thereof, characterized in that said stack of filter units includes a plurality of co-operating filter units defining a plurality of paired co-operating filter surfaces, including first and second surfaces each defining a plurality of fingers, said fingers defined by said first surface being arranged in registration with said fingers defined by said second surface, the exteriors of said fingers defined by said first and second surfaces communicating with either one of an upstream side and a downstream side and the interiors of said fingers defined by said first and second surfaces communicating with the other one of said upstream side or downstream side, spaces being defined in association with said fingers defined by said first and second surfaces and being disposed in registration so as to define channels, which permit particulate matter to become disengaged with said upstream side of said fingers defined by said first and second surfaces.
摘要:
A cleanable filter system including a housing defining an inlet for fluid to be filtered and an outlet for filtered fluid, a stack of filter disks disposed within the housing and defining an upstream surface communicating with the inlet and a downstream surface communicating with the outlet and filter disk cleaning apparatus including a plurality of nozzles coupled to a source of backflushing fluid and providing a high pressure stream of fluid impinging on the downstream surface, and apparatus for providing both linear and rotational motion of the plurality of nozzles relative to the downstream surface thereby to result in systematic scanning of generally all of the filter disks.
摘要:
A disk-type filter comprising a housing having an inlet connectable to an upstream pipe and an outlet connectable to a downstream pipe, and a stack of filter units disposed within said housing for separating solid particles from a fluid flowing between filter units in said stack of filter units from an upstream side of said stack of filter units to a downstream side thereof, characterized in that said stack of filter units includes a plurality of co-operating filter units defining a plurality of paired co-operating filter surfaces, including first and second surfaces each defining a plurality of fingers, said fingers defined by said first surface being arranged in registration with said fingers defined by said second surface, the exteriors of said fingers defined by said first and second surfaces communicating with either one of an upstream side and a downstream side and the interiors of said fingers defined by said first and second surfaces communicating with the other one of said upstream side or downstream side, spaces being defined in association with said fingers defined by said first and second surfaces and being disposed in registration so as to define channels, which permit particulate matter to become disengaged with said upstream side of said fingers defined by said first and second surfaces.
摘要:
A filter element comprising at least one coiled filter strip defining first and second butt ends, one of the butt ends being arranged to define an upstream surface during normal filtering operation, receiving fluid to be filtered, and the other of the butt ends being arranged to define a downstream surface during normal filtering operation, through which filtered fluid leaves the coiled strip.
摘要:
A multiple element filter system comprising a filter housing defining a water inlet for water to be filtered, a filtered water outlet, a plurality of cylindrical filter elements, each defining upstream and downstream surfaces, disposed in the filter housing such that the upstream surfaces communicate with the water inlet and the downstream surfaces communicate with the filtered water outlet, and a flushing assembly including a movable flushing communication member arranged for selectable flushing communication with the upstream surfaces of each of the plurality of filter elements and apparatus for selectable coupling of the communication member to a flush drain at atmospheric or relatively low pressure.
摘要:
A fluid pressure control device is described effective to actuate an external device when the differential-pressure between a high-pressure fluid source and a lower pressure fluid source rises to a predetermined magnitude. The control device comprises a housing having a partition wall therein dividing its interior into two compartments communicating with each other through an opening in the partition wall. A differential-pressure sensing member is disposed in one of the compartments and is movable therein in response to the sensed differential-pressure. A stem is fixed to the differential-pressure sensing member so as to be moved therewith and carries a valve member at one end for moving it with respect to the valve opening to control the flow of the fluid therethrough and thereby to actuate the external device.
摘要:
Disclosed are a plurality of cooperating filter discs defining a plurality of paired cooperating filter surfaces, including a first surface having a large surface area and a second surface contacting only a portion of the large surface area of the first and leaving a portion of the large surface area or the upstream side of the stack not contacted thereby, at least one of said first and second surfaces being formed with grooves at the areas at which the first and second surfaces contact to allow for the accumulation of particles.
摘要:
A filter including a plurality of filter discs each formed with a central opening and disposed in a stack within a filter housing with the side faces of adjacent discs contacting each other for filtering the fluid flowing through the housing from its inlet to its outlet, the filter discs being maintained in a stack by a plurality of axially-extending rods arranged in a circular array around the outer faces of the discs and circumferentially spaced from each other to permit the filter disc stack to be cleaned by passing a cleaning nozzle through the central openings of the filter discs in the stack.
摘要:
A fluid distribution device particularly useful as a drip irrigation emitter, comprises: a continuous plastic tube for conveying the fluid therethrough; and a plurality of individual plastic sleeves enclosing and fixed to the tube at longitudinally-spaced sections along the length of the tube; each of the sleeves being deformed to define a pressure-dropping fluid passageway between its inner surface and the outer surface of the section of the tube enclosed thereby; each of said tube sections having an inlet opening through the tube wall leading to the interior of the tube, and an outlet leading externally of the plastic sleeve.
摘要:
A combined pressure-regulator and manual shut-off valve is described wherein the valve may be either manually shut-off or made operative to maintain a substantially constant outlet pressure under both flow and non-flow conditions. The device includes a piston and a disc both having substantially the same surface area and connected together with the disc being normally disposed on the outlet side of an opening between the outlet and inlet of the device, and the piston being movable within a cylinder against the action of a spring. A rod is connected to the piston, and manual presetting means presets the rod either to one position wherein the disc is disposed within the opening between the inlet and outlet so that the device acts as a manual shut-off valve, or to another position wherein the disc is disposed on the outlet side of the opening and is urged by the spring away from the opening. In the latter position, the device acts as a pressure-regulator wherein an increase in outlet pressure causes the piston to move the disc towards the opening to regulate the outlet pressure during both fluid flow and non-flow conditions.