Grinding and screening device for soil heavy metal detection

Abstract

The invention discloses a grinding and screening device for soil heavy metal detection. The grinding and scanning device comprises a case and a grinding filter screen driven by a vibration motor; a bottom plate is installed in the grinding filter screen in a swinging mode through a first central shaft; a guide hopper is arranged below the case; a collection box positioned below the guide hopper isinstalled below the case in a sliding mode; a guide plate is mounted in the case through a second central shaft in a deflection way; a first chain wheel is fixed on the first central shaft; a secondchain wheel is fixed on the second central shaft; a tension roller is rotationally installed on the case; a drive chain is installed between the tension roller, the first chain wheel and the chain wheel; the drive chain is driven by a power device; the drive chain drives the bottom plate to swing between a screening station and a leading-out station, and drives the guide plate to swing between a guide station and an avoiding station; the case is further provided with an impurity outlet; and a collection box is arranged outside the case. The grinding and screening device provided by the invention can be used for grinding and screening the soil, and automatically leading out stones and grinding balls which are remained in the grinding filter screen.

Description

technical field [0001] The invention relates to a grinding and screening device, which is used in the detection of soil heavy metals. Background technique [0002] With the rapid development of modern chemical industry. As an important part of the environment, soil, especially in industrial areas, must be tested frequently. Therefore, soil testing in environmental monitoring projects has gradually become an indispensable measure for measuring environmental quality in today's society. However, soil samples taken in industrial areas usually need to go through a long and complicated pre-treatment process of air-drying and screening before testing and analysis. Generally, the natural drying soil samples are used, and the natural drying soil samples are manually classified and screened. The manual screening process is not only inefficient, but also the dust or harmful substances that exceed the standard during the screening process will pollute the working environment of the exp...

AI Technical Summary

Problems solved by technology

However, soil samples taken in industrial areas usually need to go through a long and complicated pre-treatment process of air-drying and screening before testing and analysis

Generally, the natural drying soil samples are used, and the natural drying soil samples are manually classified and screened. The manual screening process is not only inefficient, but also the dust or harmful substances that exceed the standard during the screening process will pollute the working environment of the experimenters and affect the experiment. The health of personnel; and for the testing department that specializes in testing and analyzing soil in different environments, a large number of soil samples are analyzed every day. This kind of soil pretreatment method uses natural drying of soil samples and manual grading and screening. Due to the long processing cycle and low processing efficiency, it cannot meet the needs of soil testing experiments.

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