Dry powder spray feeding system and lifting fire truck

Abstract

The invention relates to a dry powder spray feeding system. The dry powder spray feeding system comprises a high pressure air source, a dry powder pot, a dry powder ejector, a first decompressing valve and a flow equilibrium assembly, wherein the dry powder pot comprises an air inlet opening and a power outlet opening, and the air inlet opening communicates with the high pressure air source; the dry powder ejector communicates with the powder outlet opening; the first decompressing valve is connected between the air inlet opening and the high pressure air source; and the flow equilibrium assembly is placed between the high pressure air source and the dry powder pot, and can enable the flow of air flowing through the air inlet opening and the powder outlet opening to be the same by controlling the air inlet amount from the high pressure air source to the dry powder pot. Therefore, according to the dry powder spray feeding system provided by the embodiment of the application, spraying and sending pressure of the dry powder pot can be maintained to be stable in the spraying process, and the difficult problem that a conventional dry powder spray feeing system is easy to cause underpressure for lifting spray feeding at the later-stage spray feeding caused by pressure-reduced spray feeing, can be solved.

Description

Technical field

[0001] The present disclosure relates to the field of fire fighting devices, and in particular to a dry powder spraying system and a raised fire truck. Background technique

[0002] The dry powder spraying system is a working device that uses inert gas such as nitrogen as the driving gas to fluidize the dry powder stored in the dry powder tank, and send it to the dry powder gun or dry powder gun through the transportation pipeline, and the working device is finally sprayed by the dry powder gun or dry powder gun The main working process includes the following steps: ①Inflate the dry powder tank from the high-pressure gas cylinder, and fluidize the dry powder in the dry powder tank under the set pressure; ②Open the dry powder outlet valve to make the dry powder-nitrogen two-phase flow Enter the transportation pipeline; ③ Supply the dry powder-nitrogen two-phase flow to the dry powder injector to spray out and inject it into the place that needs to be extinguished. ...

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