Removable in-line self-cleaning strainer for piping systems

Details Removable in-line self-cleaning strainer for piping systems Removable in-line self-cleaning strainer for piping systems

1986-03-20

1987-07-07

Fisher, Richard V.

Liquid purification or separation

Processes

Separating

210232, 210409, 210447, 210450, 210463, 210499, B01D 3502

Patent

active

046785892

ABSTRACT:
An in-line, inclined strainer device in which the strainer proper is removably mounted within a casing, which casing is mounted in-line in a piping system, such that the strainer may be removed in an easy manner for subsequent replacement and/or cleaning. The strainer is mounted by a removable tubular element having an elliptically-cut end for mounting directly to it an elliptically-shaped screen mesh forming the strainer proper. The end of the tubular element is mounted in a linear portion of a casing through which flows the liquid of the piping system, so that the screen mesh may entrap solids. Diametrically opposite to the tubular element is a drainage duct which, when opened, allows the flow of the liquid to pass through, carrying away with it the effluent sedimented and debris in the drainage duct. The strainer proper includes a plurality of rods that are welded to the lower end of the tubular element, which rods directly mount the screen mesh. The tubular element also provides for a flow of the liquid into it during normal full-flow conditions of the piping system, such that a pressure head is provided in it to create a small back-washing turbulence about the screen. The screen mesh may be self-cleaned, in combination with the pressure head, by the injection of a spray from a nozzle positioned in a cover directly above the tubular element, which is carried out simultaneously with the opening of the drainage duct.

REFERENCES:
patent: 1631822 (1927-06-01), Jahn
patent: 3372807 (1968-03-01), Barnard
patent: 3469705 (1969-09-01), Thomas
patent: 3816176 (1974-06-01), Rundqvist
patent: 4051042 (1977-09-01), Tullier

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