Array type dry ice spray head and gas-solid mixture generation method

Abstract

The invention provides an array type dry ice spray head and a gas-solid mixture generation method. The array type dry ice spray head comprises an upper cavity, a lower cavity and a spray head assembly. The upper cavity comprises an upper cavity rack, a liquid inlet pipeline arranged on the upper cavity rack in a penetrating manner and a plurality of first branch pipes vertically arranged on the liquid inlet pipeline; the lower cavity comprises a lower cavity rack, an air inlet pipeline arranged on the lower cavity rack in a penetrating manner and a plurality of second branch pipes vertically arranged on the air inlet pipeline, and the first branch pipes communicate with the second branch pipes. The spray head assembly comprises throttlers connected to the first branch pipes in a sleeving manner, gas mixing devices connected to the second branch pipes and nozzles arranged on the gas mixing devices in a sleeving manner. Each gas mixing device is provided with a plurality of ventilating holes annularly, an annular cavity is formed between each gas mixing device and each nozzle, liquid carbon dioxide flows into the throttlers through the liquid inlet pipeline and is mixed with compressed gas at the outlets of the throttlers to be ejected through the gas mixing devices or the annular cavities. The array type dry ice spray head is few in port and is arranged in an array manner, and has relatively good air impermeability and gas mixing effect. The spraying direction and the flow rate of gas-solid mixed ejecta can be adjusted, so that the array type dry ice spray head can be suitable for different working occasions.

Description

technical field [0001] The invention relates to the field of dry ice cleaning, in particular to an array type dry ice spray head and a method for generating a gas-solid mixture. Background technique [0002] In the field of cleaning equipment, especially in terms of snowflake carbon dioxide cleaning, most of the existing nozzles on the market are ordinary nozzles with a single nozzle and a single medium. The problems of the existing single nozzle are: 1) The contact pressure is unstable. Under such circumstances, the nozzles currently on the market cannot ensure that the internal pressure field is uniform everywhere; 2) cannot form multi-phase airflow uniform mixing; 3) cannot flexibly change key attributes such as airflow direction and flow rate; 4) cannot achieve key parts or complex parts Cleaning in a specific way, the cleaning method and structure are relatively simple. In the case of multiple nozzles, multiple ordinary nozzles are connected by pipelines. Due to the hi...

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Problems solved by technology

[0004] The present invention provides an array type dry ice spray head and a method for generating a gas-solid mixture, aiming at improving the problems of poor air tightness and poor gas mixing effect of the existing dry ice spray head

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