A dust cleaning device for a bag filter

Abstract

The application discloses a dust cleaning device of a bag type dust collector, which comprises a machine box body, a fan, a pulse back flushing device and filter bags are arranged in the machine box body respectively, a first air inlet and an air outlet are arranged on the machine box body respectively, a partition plate is arranged in the machine box body, the inner cavity of the machine box body is divided into an upper cavity and a lower cavity through the partition plate, the first air inlet is communicated with one side of the upper cavity, the air outlet is communicated with one side of the lower cavity, a through hole is formed through the partition plate, and a filter bag framework is arranged on the partition plate and corresponds to the through hole; the filter bag framework comprises a connecting seat fixedly arranged on the upper side of the partition plate, a first lifting seat and a scraping ring movably arranged on the connecting seat in sequence from top to bottom, the first lifting seat is located at the inner ring of the scraping ring, the scraping ring is provided with a plurality of scraping rings which are arranged in sequence from top to bottom and are connected with each other by a first chain, a second chain is connected between the uppermost scraping ring and the connecting seat, and a plurality of supporting rods which can be relatively displaced are arranged on the first lifting seat in a circumferential direction.

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