High negative pressure welding smoke dust purification device and deashing method thereof

Abstract

The invention discloses a high negative pressure welding smoke dust purification device and a deashing method thereof. A purifying and dust removing bin inside the high negative pressure welding smoke dust purification device comprises a bag-type dust remover; the bag-type dust remover comprises a pneumatic deashing part; the pneumatic deashing part comprises a mechanical part and a pneumatic control part, wherein the mechanical part comprises a filter bag, a pull rod and an air cylinder, wherein the filter bag is a constituent part of the bag-type dust remover, and a piston rod of the air cylinder is connected with the filter bag through the pull rod. When the mechanical part is started to enter a deashing procedure by the pneumatic control part, the deashing method comprises the following steps that: the piston rod of the air cylinder moves upwards to drive the pull rod to move upwards, and the pull rod lifts the filter bag so that the filter bag is changed from an unfolding state to a folding state; the piston rod of the air cylinder moves downwards to drive the pull rod to move downwards after moving upwards to the limit position of the air cylinder, and the pull rod pushes downwards the filter bag so that the filter bag is restored to the opening state. The invention has better deashing effect and more thorough deashing because the deashing part adopts an air cylinder vibrating type deashing mode.

Description

technical field [0001] The invention relates to a welding fume purification device, in particular to a dust removal component in a high negative pressure welding fume purification device and a dust removal method thereof. Background technique [0002] The "Twelfth Five-Year" environmental protection plan proposes to further strengthen the control of primary particulate matter emissions, requiring in-depth treatment of existing water sources, steel plants, power plants and industrial boilers, installation of efficient dust removal facilities, and reduction of fugitive emissions. However, at present, most of the shipbuilding enterprises and container production units in the country do not have welding fume absorption devices in the welding workplaces. The welding fumes are all fugitive emissions. Occupational diseases occur from time to time, and the health of employees cannot be protected. In a small number of places where high negative pressure welding fume purification devi...

AI Technical Summary

Problems solved by technology

[0006] (1) The shape is large, and it is inconvenient to manufacture and install;

[0007] (2) High cost;

[0008] (3) When the pulse is pulsed, the ash is instantly raised in the purification and dust removal chamber, and the ash that is blown back is sucked into the filter bag, and the ash removal is not complete

Images