An automatic sample preparation system for sample collection and preparation

Abstract

The invention discloses an automatic sample preparation system used for sampling and preparing a sample. The automatic sample preparation system used for sampling and preparing the sample comprises more than two sample preparing treatment units; a Z-shaped conveying device which is used for lifting and conveying a material is arranged between adjacent two sample preparing treatment units; the Z-shaped conveying device comprises a machine frame, a driving assembly which is arranged on the machine frame, a material conveying barrel, and two Z-shaped chain conveying channels which are formed symmetrically; each Z-shaped chain conveying channel comprises a driving wheel assembly, a driven wheel assembly, a guide wheel assembly and an annular chain which are matched with one another; the two ends of the material conveying barrel are respectively connected to the two annular chains; the driving assembly drives the two annular chains to move synchronously through the two driving wheel assemblies so as to drive the material conveying barrel to collect the material which is treated once at the previous-stage sample preparing treatment unit and lift and convey the material to the next-stage sample preparing treatment unit for unloading the material and performing automatic sample preparing operation. The automatic sample preparation system used for sampling and preparing the sample has the advantages that the operation is stable, the labour intensity can be reduced, the sample precision can be effectively ensured, and the efficiency is extremely high.

Description

technical field [0001] The invention relates to the field of coal sample preparation equipment, in particular to an automatic sample preparation system for sample collection and preparation. Background technique [0002] For coal quality analysis, it is actually a process of sampling analysis. Coal is an inhomogeneous substance (particle size, distribution of quality characteristics, etc.), and the sampled parent stock is generally relatively large (ranging from tens of tons to tens of thousands of tons), and the samples that can represent the quality and characteristics of the entire stock sample are drawn to the maximum extent. The process of sampling representative samples is called "sampling". At present, there are many methods such as mechanical sampling, manual sampling, and semi-mechanical sampling. Each country has mandatory standards, and sampling work must be carried out in accordance with the standards. [0003] After the sample is collected according to the sta...

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Problems solved by technology

[0006] (1) The manual method is used to prepare samples step by step, and the materials are manually transferred from the upper sample preparation unit (equipment) to the next level sample preparation unit (equipment). Manual intervention in the link is prone to fraud

[0007] (2) The traditional belt conveyor is used to prepare samples step by step, but this method cannot be lifted vertically, in order to transfer the material from the lower output port of the upper sample preparation unit (equipment) to the next sample preparation unit (equipment) It is necessary to extend the length of the conveyor belt to reduce the lifting slope, and this will inevitably make the entire sample preparation system occupy a large area and the space utilization rate is not high

[0008] (3) The multi-bucket conveying method is used to prepare samples step by step. First, when conveying in this way, the coal samples are distributed in many small buckets, so that the coal samples are scattered and transported flat, and the surface area of ​​the coal samples exposed to the air is relatively large. , the loss of water is more, which affects the accuracy of subsequent analysis and testing; second, the contact area between the coal sample and the hopper wall in this transportation method is also large, so that there are many residues of the coal sample in the hopper, which will pollute the next sample preparation. It affects the accuracy of subsequent analysis and testing; the third is that when multi-bucket transportation is actually used, only a small part of the buckets are filled with coal samples each time, and the actual use efficiency of all equipment is low

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