Measuring and testing – Sampler – sample handling – etc. – Withdrawing through conduit or receptacle wall
Patent
1999-06-22
2000-05-02
Raevis, Robert
Measuring and testing
Sampler, sample handling, etc.
Withdrawing through conduit or receptacle wall
G01N 104
Patent
active
060558709
ABSTRACT:
A sampling apparatus is characterized by a sampler body having a bore and a forward opening from the bore communicating with the interior of a vessel containing fluidized product in which strands, viscous strings and particles may be entrained. A plunger assembly in the bore is generally cylindrical along a longitudinal axis and has a sample receiver and cutters. The sample receiver is generally tubular and has a plurality of arcuately spaced longitudinal slots extending radially between an outer surface and a hollow interior of the sample receiver, and individual cutters are in facing relationship at opposite ends of the bore. A pneumatic motor reciprocates the plunger in the bore in a forward direction to a sample obtaining position where the sample receiver and cutters are extended at least partly out of the forward bore opening and into the interior of the process line to obtain a sample of fluidized product that flows into and fills the sample receiver passages and hollow interior. The motor then reciprocates the plunger rearward to a sample delivering position where said sample receiver and cutters are retracted into the bore for conveying the sample of fluidized product in the sample receiver to a sample delivery position in the bore. The sample receiver and cutters are a unitary structure and the cutters cooperate with the sampler body in both directions of reciprocation of the plunger assembly to slice through any strands, viscous strings and particles that extend radially outward from the sample receiver slots and would otherwise impede reciprocation of the plunger assembly.
REFERENCES:
patent: 4147062 (1979-04-01), Jaeger
patent: 4262533 (1981-04-01), Jaeger
patent: 4475410 (1984-10-01), Jaeger
patent: 4630479 (1986-12-01), Wagener et al.
patent: 4744255 (1988-05-01), Jaeger
patent: 5585576 (1996-12-01), Jaeger
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