Dry powder recycling system for fire extinguisher filling production line

Abstract

The invention discloses a dry powder recycling system for a fire extinguisher filling production line. The dry powder recycling system comprises a dry powder filling pipe, a branch pipe connected witha dry powder filling opening in a vacuum filling head is arranged on the dry powder filling pipe, a vacuum air pumping hole in the vacuum filling head is connected with a dust remover through a pipeline, the dust remover is connected with a dry powder recycling tank through a discharging pipe with a first valve, and the dry powder recycling tank is connected with the dry powder filling pipe through a returning pipe with a second valve. The dry powder recycling system is simple in structure and significant in effect, the dry powder recycling system leads the air containing the lightweight drypower in the vacuum filling head to the dust remover for air-solid separation, the light components lost due to the negative pressure in the initial filling process can be recycled, the light components can also be recycled for being used in the initial filling and re-filling processes, the dry powder filling pass rate is effectively improved, the consumption of the raw material is reduced, and meanwhile, the operation difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of fire extinguisher filling, in particular to a dry powder recycling system for a fire extinguisher filling production line. Background technique [0002] Chinese patent 201820868809.X discloses a filling head for filling and inflating devices for dry powder fire extinguishers (see figure 1 ), in automatic production, firstly use the above vacuum negative pressure filling head for initial dry powder filling (hereinafter referred to as "initial filling"), and then check the weight of the tank body, and if necessary, pass the fine filling equipment (including fine filling refilling the fire extinguisher. Since the filling dry powder is a mixture of various solid powders, under the action of negative pressure during the initial filling, the light components in it will be drawn away with the air, resulting in an imbalance of the filling dry powder components in the fire extinguisher, or even inconsistent with ...

AI Technical Summary

Problems solved by technology

Since the filling dry powder is a mixture of various solid powders, under the negative pressure during the initial filling, the light components will be sucked away together with the air, resulting in an imbalance of the filling dry powder components in the fire extinguisher, or even not meeting the requirements. National standards affect product quality; secondly, in order to make the filling meet the requirements, the content of light dry powder is often increased according to experience, which increases the difficulty of operation and causes waste of raw materials; thirdly, the sucked dry powder enters the vacuum system, which is easy to cause Equipment damage

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