Automatic conveying and weighing device of samples

Abstract

The invention discloses an automatic conveying and weighing device of samples. The automatic conveying and weighing device comprises a base, a weighing cover device and a driving device, wherein the weighing cover device is connected with the driving device; the driving device comprises a driving box, a driving motor, a motor seat, a driving shaft, a rotary platform and straight gears; the straight gears comprise a driving straight gear and a driven straight gear; a motor shaft is arranged at an output end of the driving motor; the motor shaft is provided with the driving straight gear; the driving shaft is arranged in the middle of the rotary platform; the driven straight gear is arranged on the driving shaft; the driving straight gear is engaged with the driven straight gear; the weighing cover device comprises a weighing outer cover, a weighing inner cover and a weighing cover cap; the weighing outer cover is fixedly mounted on the base; the weighing inner cover is fixedly mounted on the driven straight gear; the weighing cover is arranged at the tops of the weighing outer cover and the weighing inner cover. The device is simple in structure, scientific and convenient, high in pertinence and high in automation degree; the automatic conveying and weighing problem of a filter membrane can be solved very well.

Description

technical field [0001] The invention relates to a sample automatic conveying and weighing device. Background technique [0002] Atmospheric particle monitoring instruments on the market usually use the principle of pneumatic collision for sampling. In this process, filter membranes are required. The collected filter membranes need to be weighed, usually placed in a closed weighing hood for weighing. The purpose of the weighing hood is to prevent the weighing result from being adversely affected by the movement of ambient air. Such drafts, which can be caused, for example, by the air-conditioning system or by opening doors and windows, can exert steady or fluctuating forces on the weighing pan, which for the user of the balance manifests itself as errors, fluctuations and fluctuations in the displayed weighing results. irregular. The traditional weighing hood requires the experimenter to open or close it manually. It is considered that the operation is difficult to avoid an...

AI Technical Summary

Problems solved by technology

Such drafts, which can be caused, for example, by the air-conditioning system or by opening doors and windows, exert steady or fluctuating forces on the weighing pan, which for the user of the balance manifests itself as errors, fluctuations and fluctuations in the displayed weighing results. irregular

The traditional weighing hood requires the experimenter to open or close it manually. It is considered that the operation is difficult to avoid and there will be mistakes, such as shaking or collision. This type of behavior will lead to inaccurate weighing results. At the same time, if the experimental sample Large quantities, so manual opening and closing of the weighing hood will make the muscles tired, and there may be vibration when picking or placing weighing samples

In addition, the filter membrane weighing in the prior art usually puts the filter membrane and the membrane bracket together for weighing. Since the filter membrane is light in weight relative to the membrane bracket, placing the membrane together greatly reduces the Weighing accuracy

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