Automatic sampling device of bucket-type lifter

Abstract

The invention discloses an automatic sampling device of a bucket-type lifter. The automatic sampling device comprises a sampling mechanism, a hydraulic push rod 7 and a programmable controller (PLC) control system. The sampling mechanism comprises a transmission connecting rod 10, a sampling arm transmission mechanism 4, a sampling bucket 3, an accommodating bucket 1 and the like. The sampling arm transmission mechanism 4 consists of a sampling arm 13 and a transmission piece in the sampling arm. The PLC control system comprises a PLC control cabinet 5, an approach switch I for accommodating a coal sample limit, an approach switch II for pouring out the coal sample limit and a hydraulic pump motor or a solenoid directional valve for controlling the contraction of the hydraulic push rod. APLC control circuit in the PLC control cabinet comprises a PLC, a panel operation button, an indicator and relays I and II for controlling the positive and passive rotation of the hydraulic pump motor or the reversion of the solenoid directional valve. The automatic sampling device is applied to a bucket-type lifter of a jigger in a coal preparation plant, is used for sampling coal samples, and can realize automatic and complete section continuous sampling. By the PLC control timing automatic sampling, the safety of operators can be ensured, accuracy is high and labor intensity is alleviated. The automatic sampling device is convenient to assemble and disassemble, and does not influence the overhaul operation for the bucket-type lifter.

Description

technical field [0001] The invention relates to a coal sample sampling device for a jigger in a coal preparation plant, in particular to an automatic sampling device for a bucket elevator used for automatic sampling of coal samples for a jigger bucket elevator in a coal preparation plant. Background technique [0002] At present, there is no automatic sampling device for the jig bucket elevator in the coal preparation plant, and manual sampling is used. Manual sampling has the following disadvantages: First, the material size is large, the coal flow rate is fast and the chute width is large, and there are great safety hazards for the sampling personnel during the sampling operation; The guidance of coal preparation operation is not strong; the third is to take a sub-sample every half an hour. Since the main workshop and the floating and sinking room at the sampling point are not on the same floor, the labor intensity of the operators is high. With the increase of coal produ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiencies of unsafe, poor accuracy and high labor intensity in manual coal sampling of current jig bucket elevators, the invention provides an automatic sampling device for bucket elevators, which can realize automatic coal sampling and safe sampling , High accuracy, reduce the labor intensity of the operator, facilitate dismantling and installation, and do not affect the maintenance of the bucket elevator

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