Self-circulation dust chamber

The utility model discloses a self-circulation dust removal chamber, which belongs to the technical field of dust removal, comprises a bottom plate provided with a dust removal chamber body, and has the beneficial effects that the self-circulation dust removal chamber is provided with a spring, so that the self-circulation dust removal chamber can perform elastic force limitation on a mounting frame, can perform sealing treatment on the interior of a first inner groove, and simultaneously can perform sealing treatment on the interior of the first inner groove when being subjected to external force; a mounting frame is conveniently pulled out, an activated carbon filter screen is conveniently replaced, long-time recycling of the structure is guaranteed, gas in a first inner tank can be sucked into a third inner tank through work of a gas pump, and when the gas pressure in the first inner tank becomes low, the gas passes through a first gas collection port from the outside, is filtered and screened through a fi