SU1599696A1 - Apparatus for taking samples of pulp from flow - Google Patents

Abstract

This invention relates to process automation. The purpose of the invention is to increase the representativeness of the sample. The device contains a box, in the upper part of the partition blocked by a partition, forming the input and output cavities. The pulp enters the input cavity through the tray, lowers, passes under the partition and rises into the output cavity. A suction intake device made, for example, in the form of an airlift, is installed in the outlet cavity in an upstream flow. The transverse movement mechanism of the intake provides flow intersection. 1 hp f-ly, 2 ill.

Description

The invention relates to the automation of technological enrichment processes and, in particular, can be used in the processing plants of the chemical industry, ferrous and nonferrous metallurgy. ;

The aim of the invention is to increase the representativeness of the sample.

FIG. 1 showed the proposed device, a general view ;, in FIG. 2 shows section A-A in FIG. one.

The device contains a receiving box 1 with a partition 2, a suction intake device 3, a transverse displacement mechanism 4, a sample divider 5, an intake device drain pipe 6, air valves 7 and water valves 8, inlet 9 and outlet 10 in the box.

The device works as follows:

The pulp enters the receiving duct 1, in the upper part of which a partition 2 is installed, forming an inlet 9 and an outlet 10 cavity. The entrance threshold of the duct is higher than the output one by h 0.3-0.5 m. In the input cavity, the pulp falls and rises in the output cavity. A suction intake device, made, for example, in the form of an airlift., Is installed in the outlet cavity 10 in an upstream flow. The speed in the upstream is determined by the difference in levels before and after the partition and the upstream (and downward) cross section. The upstream velocity is chosen greater than the hydraulic size of the pulp particles and should be 1.5-2 m / s. To ensure representative sampling, the speed of the pulp at the inlet to the intake must be at least as high as 3 (f

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c

th stream. This is achieved by the depth of suction in the suction intake device (the amount of air for the airlift).

In the initial state, the intake device 3 is in the extreme position, the air valve 7 is closed, the water valve 8 is open. Before sampling, valve 8 closes, valve 7 opens, pulp raising begins, which is discharged into the flow through the drain pipe. After some time, the movement mechanism is turned on, the intake device moves, a cross-section of the ascending flow, while the drain coarse passes over the divider, in which a part of the sampled sample returns to the flow, and the second part

The descending representativeness of the sample is ensured by the coincidence of the direction of the flow velocity with the direction of sampling and the intersection of the flow, which ensures intensive mixing of the pulp and further analysis and control of the particle size distribution of the solid phase in the ore pulp flows.

ten

Claims (2)

1. A device for sampling pulp from a stream, including a box with a thin-walled septum, an intake device mounted for movement, characterized in that, in order to increase forms the sample and is directed to the collection of the sample, the partition sample file After several flow intersections, the intake device returns to its original state. is located in the upper part of the box with a gap at its bottom, with the formation of the inlet and outlet cavity, and the intake device is suction-filled and   -СИ-ШП сШЛДЛМ Technical advantages are offered. 25 Installed in the exit cavity from the lifting device consist in reducing the required height difference l; l representative testing and the possibility of testing high performance flows. A reduction in the required elevation difference is achieved using the reciprocating self-propelled ability in the horizontal dartboard of the box. thirty 2. The device according to claim 1, wherein the intake device is designed as an airlift. uai 15 96964 The descending representativeness of the sample is ensured by the coincidence of the direction of the flow velocity with the direction of sampling and the intersection of the flow, which ensures intensive mixing of the pulp and further analysis and control of the granulometric composition of the solid phase in the ore pulp flows. ten Invention Formula 1. A device for sampling pulp from a stream, including a box with a thin-walled partition, an intake device mounted for movement, characterized in that, in order to increase representativeness of the sample, the partition representativeness of the sample, the partition is located in the upper part of the box with a gap at its bottom, with the formation of the inlet and outlet cavity, and the intake device is suction-filled and   -СИ-ШП сШЛДЛМ Installed in the output cavity with installed in the output cavity with the possibility of reciprocating movement in the horizontal dartboard box. thirty 2. The device according to claim 1, wherein the intake device is designed as an airlift. Compiled by K. Kushnarev Editor T. Parfenova TehreD A. Kravchuk Proofreader M, Kucher va Order 3136 Circulation 497 VNIIPI State Committee for Inventions and Discoveries at the State Committee for Science and Technology C (; CP 113035, Moscow, Zh-35.,. Raushsk nab. 4/5) Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 FIG. g Subscription