Air filtering device capable of facilitating updating of filtering net

Abstract

The invention discloses an air filtering device capable of facilitating updating of a filtering net. The air filtering device comprises a shell, an unreeling device, a reeling device and the filtering net, wherein a gas inlet and a gas outlet are formed in the shell; the unreeling device and the reeling device are both movably arranged on the shell, are positioned between the gas inlet and the gas outlet, and are positioned on the outer parts of the two opposite side edges of the gas outlet; the filtering net is tensioned and arranged between the unreeling device and the reeling device; one end of the filtering net is reeled on the unreeling device, and the other end of the filtering net is connected with the reeling device; the filtering net between the unreeling device and the reeling device forms a filtering part capable of shielding the gas inlet or the gas outlet. The air filter with the above structure has the advantages that the filtering part, for shielding the gas inlet or the gas outlet, on the filtering net can be updated through cooperative use of the unreeling device and the reeling device, and the filtering part can be updated without changing the whole filtering net, so the filtering part updating efficiency is improved, and the change time of the filtering net is prolonged.

Description

technical field [0001] The invention relates to air filter equipment, in particular to an air filter device which is convenient for updating filter screens. Background technique [0002] A general air filter device is provided with a filter at the air outlet, and the filter is sheet-shaped and detachably installed at the air outlet. The filter screen has a certain service life, and when the filter screen needs to be updated, this air filtering device can only update the filter screen by disassembling the used filter screen and installing a new filter screen. In the process of removing the filter screen, it is necessary to disassemble the housing of the device and the screws used to install the filter screen, etc., so the efficiency of disassembling and installing the filter screen is low; The time interval is short; users often forget to replace the filter screen, which causes secondary pollution to the gas passing through the filter screen or causes the gas discharged from...

AI Technical Summary

Problems solved by technology

In the process of removing the filter screen, it is necessary to disassemble the housing of the device and the screws used to install the filter screen, etc., so the efficiency of disassembling and installing the filter screen is low; The time interval is short; users often forget to replace the filter screen, which causes secondary pollution to the gas passing through the filter screen or causes the gas discharged from the filter device to fail to meet the standard of clean gas

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