Heating and digestion automatic control device for detecting heavy metal of foods

Abstract

The invention relates to the technical field of product detection and in particular relates to a heating and digestion automatic control device for detecting heavy metal of foods. The heating and digestion automatic control device comprises a worktable fixed on the ground, and a smoke discharging box is mounted on the worktable; the heating and digestion automatic control device is characterized in that a heating device and a height platform plate are mounted on the worktable in the smoke discharging box; the height platform plate is provided with a positioning supporting plate; four bracketsare fixed on a tabletop of the worktable respectively through bolts; transverse supporting rods are connected with the tops of the two pairs of brackets; two parallel longitudinal supporting rods arearranged at the upper sides of the two transverse supporting rods; straight racks are fixed above the supporting rods; the two straight racks are engaged with two gears respectively; the gears are fixed at two ends of a long shaft through bolts; two shaft seats are mounted at two sides of the long shaft; the shaft seats are fixed on a connecting plate through bolts; a mechanical arm transmission device is mounted on the long shaft; the mechanical arm transmission device is used for grasping a beaker on a heating device and the positioning supporting plate; the mechanical arm transmission device is controlled through a display PLC (Programmable Logic Controller).

Description

(1) Technical field [0001] The invention relates to the technical field of product detection, in particular to an automatic control device for detecting food heavy metals by heating and digestion. (2) Background technology [0002] When testing heavy metals in food, the inspectors should place multiple beakers containing samples on the heating plate. When the beakers are heated to a certain degree, they will drop the specified amount of mixed reagents respectively. When the beakers are heated to a certain temperature, they will start to smoke. When clamping the beaker, take it away from the heating plate and put it on another instrument for testing. During the heating and digestion operation, the inspector should always observe the degree of heating and digestion of the sample in each beaker. Due to the uneven distribution of the heating wire in the heating plate, it will often The degree of heating and digestion of the beakers placed at the same time is different, and the i...

AI Technical Summary

Problems solved by technology

[0002] When testing heavy metals in food, the inspectors should place multiple beakers containing samples on the heating plate. When the beakers are heated to a certain degree, they will drop the specified amount of mixed reagents respectively. When the beakers are heated to a certain temperature, they will start to smoke. When clamping the beaker, take it away from the heating plate and put it on another instrument for testing. During the heating and digestion operation, the inspector should always observe the degree of heating and digestion of the sample in each beaker. Due to the uneven distribution of the heating wire in the heating plate, it will often The degree of heating and digestion of the beakers placed at the same time is different, and the inspectors are directly exposed to high-temperature toxic gases and smoke. When the smoke gathers, it is more difficult for the inspectors to observe

At the same time, manual observation and repeated clamping of multiple high-temperature beakers that have reached the temperature and time with manual clamps cannot effectively ensure that the heavy metals in each beaker are heated and digested to the specified optimum level. In this environment, only Judging by naked eye observation, there are also large differences between people, there are human interference factors, and the quality and efficiency of detection are not high

There is no automatic control device and method to replace people in this detection operation.

Images