Activated carbon powder continuous sampling device and sampling method

Abstract

The invention discloses an activated carbon powder continuous sampling device and a sampling method, the device comprises a feeding pipe communicated with a positive pressure conveying pipeline and a filtering and collecting unit, the filtering and collecting unit is divided into a clean chamber containing a clean gas outlet and a dust-containing chamber by a pattern plate, and a filter element is mounted on the pattern plate; the flow regulation and control mechanism is used for regulating and controlling the flow of carbon powder entering the feeding pipe; the feeding pipe is connected to the side wall of the dust-containing chamber; and the control system is in electric signal connection with the flow regulation and control mechanism and the filtering and collecting unit. A functional closed loop of'dynamic flow limiting-periodic sampling-filter element regeneration 'is formed through physical flow limiting of superfine activated carbon powder by the replaceable throttling orifice and sequential opening and closing control of the pneumatic quick switching valve by the control system, so that leakage-free continuous collection of samples is realized, the quality detection precision of activated carbon is improved, and the detection efficiency is improved. And the problems of fine powder escape, filter element breakdown and sampling distortion caused by a negative pressure siphon principle and direct flushing type filtration of the existing device are solved.

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