Membrane storage mechanism of automatic membrane replacing device

Abstract

The invention discloses a membrane storage mechanism of an automatic membrane replacing device. The membrane storage mechanism comprises a stepping motor, a coupler, a filter membrane rotating disc, afilter membrane rotating disc base, a filter membrane assembly and a proximity switch sensor; the stepping motor is connected with the filter membrane rotating disc base through the coupler, the filter membrane rotating disc is placed on the filter membrane rotating disc base, and the filter membrane assembly is placed on the filter membrane rotating disc; a cylindrical metal conductor is fixed on the filter membrane rotating disc base; the proximity switch sensor is fixed at the lower end of the cylindrical metal conductor and is used for detecting the position of the cylindrical metal conductor. According to the membrane storage mechanism, the tedious process of manual membrane replacement and some uncertain influences possibly caused by manual membrane replacement on a measurement result are avoided, 30 filter membrane assemblies can be stored in the filter membrane rotating disc, and storage of the multiple filter membrane assemblies is achieved through effective combination of the stepping motor, the coupler, the filter membrane rotating disc and the filter membrane rotating disc base. In conclusion, the membrane storage mechanism is simple in structure and reliable in work,and the filter membrane assemblies are accurate in moving position.

Description

technical field [0001] The invention belongs to a membrane changing device, in particular to a membrane storage mechanism of an automatic membrane changing device. Background technique [0002] At present, the methods used in dust detection can be divided into sampling method and non-sampling method. Using sampling method to measure dust will involve the problem of filter membrane replacement. Existing membrane changing mechanism, at present, commonly used ambient air particle samplers are single-membrane samplers, the working mode of this sampler is that after sampling for 20-23 hours a day, it must be replaced within the remaining 4-1 hours. Take out the old filter membrane and replace it with a new filter membrane, then start the sampler to continue working. Changing the membrane of this sampler requires manual operation, and if the operation is not done properly, the measurement result will be affected, and it is time-consuming and labor-intensive. If the replacement o...

AI Technical Summary

Problems solved by technology

This kind of sampler requires manual operation to change the membrane. If the operation is not done properly, the measurement results will be affected, and it is time-consuming and laborious.

If the membrane replacement cannot be completed within a short period of time due to special circumstances such as bad weather, traffic jams, and personnel factors, it will affect the continuity of air quality monitoring, resulting in interruption of monitoring and loss of data

At present, some dust samplers can realize automatic membrane replacement, but the number of filter membranes that can be stored in dust samplers is very small, generally only a few to a dozen can be stored.

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