Online automatic sampling method and device for machine-made sand production monitoring system

Abstract

The invention relates to an online automatic sampling method and device for a machine-made sand production monitoring system. The sampling method comprises the following steps: 1) fixedly mounting a sampling device above a finished product conveying belt of a machine-made sand production line; 2) enabling system processing software to send a sampling command, enabling a motor to drive a sampling arm to rotate circumferentially, and scrapping and sending a finished product on a conveying belt to a funnel; 3) continuously moving the sampling arm until the sampling arm touches the limit switch, then stopping moving and keeping the sampling arm suspended under the action of the counterweight device; 4) setting system processing software to send a repeated sampling command, and performing accumulating in the funnel to obtain the machine-made sand obtained for multiple times; and 5) enabling a metering device to weigh a proper amount of samples, enabling samples to enter a test system, allowing machine-made sand to flow in a recovery system. The device is uniform and flexible in sampling and strong in sample representativeness, does not interfere with normal operation of production equipment, and realizes a convenient and rapid automatic sampling mode of machine-made sand samples on a production line.

Description

technical field [0001] The invention belongs to the technical field of testing of building materials, and in particular relates to an online automatic sampling method and device for a machine-made sand production monitoring system, which is suitable for convenient sampling of different types of machine-made sand production lines. Background technique [0002] Machine-made sand is made of rocks, mine tailings or industrial waste particles with a particle size of less than 4.75mm through mechanical crushing and screening. Sand has the advantages of low raw material cost, large production quantity, not affected by seasons, and controllable quality. However, poor sand making equipment and insufficient process technology may lead to poor stability, sharp particle edges and corners, excessive stone powder content and poor gradation in the production of machine-made sand. And other issues. The machine-made sand production information monitoring system aims at machine-made sand pro...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that there are few sampling devices in the machine-made sand production line and some devices still have disadvantages such as low degree of automation and cumbersome sampling, the present invention invents an online automatic sampling method and device for a sand production monitoring system. The invention has uniform and flexible sampling and a high degree of automation , the sample is representative, does not interfere with the normal operation of the production equipment and is suitable for different types of machine-made sand production lines

Images