Displacement type ash removal bag filter

Abstract

The invention discloses a displacement type ash removal bag filter. A dedusting box is arranged on a collecting box, an air inlet is formed in one side wall of the dedusting box, and an air outlet is formed in the other side wall of the dedusting box; a plurality of independent box units are arranged in the dedusting box, a plurality of rows of filter bags are arranged in each independent box unit, a flue is correspondingly arranged on the upper portion of each independent box unit, and an off-line valve is arranged on each flue; an injection system is arranged above each row of filter bags and comprises an injection pipe and a plurality of injection ports formed in the side wall of the injection pipe, a pulse valve is arranged at one end of each injection pipe, and the two ends of each injection pipe are movably connected to the corresponding independent box units. The bag filter further comprises a linear actuator, wherein the output end of the linear actuator is connected with the injection pipes. The bag filter can move for ash removal.

Description

technical field [0001] The invention relates to the field of powder collecting devices, in particular to a displacement type dust cleaning bag filter. Background technique [0002] The soot gas is filtered through the bag filter, and the primary dust is formed on the surface of the filter bag. In the subsequent dust removal process, the primary dust becomes the main filter layer of the filter bag. With the corresponding increase of dust resistance, when the pressure difference on both sides of the filter bag increases to a certain level, the fine dust attached to the filter bag layer will be squeezed away, and the dust removal efficiency will drop significantly. Therefore, when the filter resistance reaches a certain value, the dust should be cleaned in time. [0003] The bag filter whose publication number is CN204275687U is used to filter dust. When cleaning is required, the offline valve on the bag filter is closed so that the air flow in the bag filter box does not circ...

AI Technical Summary

Problems solved by technology

Although the existing bag filter box is equipped with a plurality of pulse valves for blowing the filter bags, due to the high pressure of the gas blown out from the pulse valves, each pulse valve forms a fixed point to blow the filter bags. In this way, most of the dust can be cleaned off, but due to the distance between two adjacent pulse valves, there are still some parts inside the filter bag that cannot get the blowing force, resulting in unsatisfactory cleaning effect

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