DEVICE FOR AUTOMATIC SAMPLING FROM CHUTES AND CHANNELS IN FLOW OF ABRASIVE PULPS Russian patent published in 2019 - IPC G01N1/10 

FIELD: sampling.

SUBSTANCE: invention relates to equipment for sampling fluid-carrying products of ore-dressing plants, sampling of tail abrasive industrial products of concentrating mills. Device for automatic sampling from a stream of fluid abrasive slurries and industrial products flowing in chutes, channels, comprising a frame with guide posts fixed thereon, linear transfer pneumatic drive connected to hollow movable sampling rod, on the upper end of which there is a sampling nozzle, which also includes a pump for sampling and a programmable controller (PC) with a drive control unit (DCU), characterized in that to the lower end of the hollow sampling rod perpendicular to the axis of the rod and perpendicular to the flow of pulp is rigidly connected by tubular inputs sampling pipe with sampled slots, with tightly closed ends and a pulp level sensor and a sampling pipe location mounted thereon, wherein number of entries into sampling pipe, their location and size of slots along its length is selected from conditions for uniform sampling throughout entire flow section when it is crossed by sampling pipe by calculation from channel size conditions, limits of change of volume of pulp flow and size of largest particles in pulp, at that minimum width of slot should be b>3d, where b is slot width; d is diameter of largest particles in pulp, length of sampling pipe is selected from condition Lo = 0.90 Lm, where Lo is length of sampling pipe; Lm is width of narrowest part of chute (channel) through which pulp flows; device comprises a control programmable unit, equipped with programs of the sampler operation, to the input of which the signals of the pulp level control sensor and the location of the sampling pipe and the signals of the end switches of the pneumatic drive are connected, and control unit (DCU) is connected to output by pump, pneumatic drive and flushing water supply valve.

EFFECT: providing possibility of automatic selection of representative sample of pulp of any given volume.

1 cl, 1 dwg