Fluid sprinkling – spraying – and diffusing – Conduit or nozzle attached irrigation-type decelerator
Patent
1983-02-07
1985-08-06
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Conduit or nozzle attached irrigation-type decelerator
239547, 138 42, B05B 102
Patent
active
045330832
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a drip feed device for irrigation purposes and in particular it relates to devices of a type which can be inserted in a line to allow a drip or a steady restricted flow from water within the line to the area being watered, the term "drip feed" herein including restricted steady flow.
Many forms of drip feed devices are already known, most of these using a body within which is a member having an elongated groove of spiral, helical or similar form through which water flows from within the carrying tube to flow out at the other end at a pressure so reduced that only a trickle of water flows from the device.
It is already known to use in such devices a button having on each side a circular flow path with means to feed into the flow path on one side and along the flow path and through a medial wall in the button to the other side and then along the flow path to discharge from the device, the restriction being obtained by having in the flow path a series of oppositely projecting veins whereby to substantially elongate the path and provide turbulence to the flow by successive changes of direction to break down the pressure between the starting end and the discharge end.
An object of the present invention is to provide a device of this general type with certain improvements, the first improvement being to provide within the device a button having improved flow constricting means, a second object being to provide a satisfactory housing for such a button which will allow the button to be readily removed for cleaning, and a third object is to so arrange the flow path that there is a minimum problem of blockages when the water passing through the device carries solid impurities.
The invention generally comprises a drip feed device for irrigation purposes in which a body has a cylindrical wall closed at one end by a transverse first wall having on it an inlet for fluids, and a cap fitted to the body having a cylindrical wall and across it an intermediate transverse second wall parallel to the first wall and having through it an outlet aperture, the body and the cap forming between them a closed chamber communicating on one side with the said inlet and on the other side with the outlet aperture, in which chamber is housed a circular flow constricting button having flow-restricting channels on each side of it connected in series between the inlet and the outlet aperture of the said chamber and having inwardly projecting flow-restricting baffles and outwardly projecting flow-restricting baffles extending into the flow-control channels, the chamber being bounded on the outside by the cylindrical wall of the cap and the said button having the inwardly projecting flow-restricting baffles overlap the ends of the outwardly projecting flow-restricting baffles whereby flow is in counterdirection around the ends of both the inwardly flow-restricting baffles and the outwardly projecting flow-restricting baffles.
According to a preferred form the invention comprises a device for irrigation purposes wherein a body has a cylindrical wall member having one end closed by a first transverse wall provided with an inlet for fluids, and fitted to the body a cap having a cylindrical wall arranged to sealingly engage the inside of the cylindrical wall of the body and having across it an intermediate transverse second wall parallel to the first wall and having through it an outlet aperture to allow outflow of fluids, the wall of the cap and the first wall and the second wall defining between them a chamber in which is housed a flow-control button which fits neatly into the chamber and has a perimeter wall which sealingly engages the first wall and the second wall when the cap is moved down over the cylindrical wall of the body, the button having a division wall intermediate the ends of the perimeter wall and narrower than the perimeter wall to form spaces for fluids between the first wall and the division wall and the second wall and the division wall, and a secondary generally cylindrical inner wall at the centre pa
REFERENCES:
patent: 2437933 (1948-03-01), Brennan
patent: 2447697 (1948-08-01), Gotschall
patent: 2511733 (1950-06-01), Morrison
patent: 3520561 (1970-07-01), Rininger
patent: 3767124 (1973-10-01), Spencer
patent: 3873030 (1975-03-01), Barragan
patent: 3885743 (1975-05-01), Wake
patent: 3998391 (1976-12-01), Lemelstrich
patent: 3998427 (1976-12-01), Bentley
patent: 4215822 (1980-08-01), Mehoudar
Kashnikow Andres
Moon, Jr. James R.
Peterson Gordon L.
RIS Irrigation Systems Pty. Ltd.
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