Sand resistant fluid swivel

Details Sand resistant fluid swivel Sand resistant fluid swivel

1999-04-12

2000-06-13

Walker, W. L.

Liquid purification or separation

Filter

Pipe or plate attached type

1661054, 277419, 285 13, 285 98, 285272, 285281, F16L 17035, F16L 27087, F16L 5524, B01D 3502, B01D 3306, B01D 3370, E21B 43013

Patent

active

060737778

ABSTRACT:
A fluid swivel of the type that includes a transfer chamber (56) formed between inner and outer main parts (52, 54), is constructed so sand and other particles settling out of the fluid, does not find its way into the lower gap passage (86) and quickly wear out a seal. A second of the main parts has a lower wall with a raised barrier (110) close to the top (122) of the lower gap passage. The first main part lower wall forms a first barrier (112) in the form of a projection that lies closely over the second barrier. The two barriers are closely spaced to form an entrance region (120) leading to the lower gap passage, with the entrance region including an upstream entrance part (132) that extends vertically or at an upward incline to discourage the migration of sand therealong.

REFERENCES:
patent: 3329449 (1967-07-01), Herold et al.
patent: 4819966 (1989-04-01), Gibb
patent: 4925219 (1990-05-01), Pollack et al.
patent: 5242198 (1993-09-01), Pollack
patent: 5411298 (1995-05-01), Pollack

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