Automatic filtering net replacement device and PM2.5 filtering net box

Abstract

The invention provides an automatic filtering net replacement device and a PM2.5 filtering net box. The automatic filtering net replacement device comprises a driving wheel, a driven wheel, a filtering net, a fixing base, a plurality of hard shafts, sliding pressure blocks and a pressure block opening/closing device, wherein the rear end of the filtering net is wound on the driven wheel, and the front end of the filtering net winds around the plurality of hard shafts and extends to the driving wheel and is wound on the driving wheel; the hard shafts, the sliding pressure block and the pressure block opening/closing device are arranged on the fixing base; the sliding pressure blocks comprise two pairs of inner sliding pressure blocks and outer sliding pressure blocks which are respectively arranged at two ends of the hard shafts; and the pressure block opening/closing device is connected with the sliding pressure blocks. According to the device disclosed by the invention, the filtering net can be automatically replaced, and the running resistance and sealing property of the filtering net can be ingeniously separated by virtue of the opening/closing operation of the sliding pressure blocks, so that the device is capable of smoothly replacing the filtering net and has excellent sealing performance. Moreover, the hard shafts have a W-shaped structure in the space, so that the windward filtering area of the filtering net can be effectively enlarged, and the dust holding capacity of the filtering net is effectively increased.

Description

technical field [0001] The invention relates to the technical field of air filtration, in particular to an automatic filter replacement device and a PM2.5 filter box based on the device. Background technique [0002] Filters are commonly used in air circulation and ventilation systems to filter the air, and these air filters need to be cleaned and replaced manually after a period of use, otherwise the filter will be blocked by dust and debris, which will weaken the ventilation and cause The effect of air circulation or ventilation is reduced, and the effect of air purification cannot be achieved. Frequent manual replacement or cleaning will not only hinder the continuous operation of the ventilation system, but also cost a lot of manpower and material resources. [0003] In order to solve this problem, the patent document CN288329Y discloses a self-renewing air filter device, which includes a rollable filter screen, and the upper and lower ends of the filter screen are resp...

AI Technical Summary

Problems solved by technology

However, because there is no sealing structure on the left and right sides of the filter screen, the device has the defect of poor gas sealing when the filter screen filters air; and the windward area of ​​the filter screen in the device is a single plane, which makes the dust holding capacity of the filter screen significantly lower. , the service life of the filter is low

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