Dry ice cleaning nozzle with function of stabilizing flow direction of dry ice

Abstract

Disclosed is a dry ice cleaning nozzle with the function of stabilizing the flow direction of dry ice. The dry ice cleaning nozzle comprises a dry ice spray pipe, a compressed air spray pipe and a nozzle cover, wherein the dry ice spray pipe is provided with a first air inlet and a first spray port, the compressed air spray pipe is provided with a second air inlet and a second spray port, and thenozzle cover is provided with a third spray port. The dry ice spray pipe, the compressed air spray pipe and the nozzle cover are sequentially arranged from inside to outside with the same central axisin a sleeving mode. The first spray port is positioned in the second spray port, and the second spray port is positioned in the third spray port. A first cavity and second cavity with gaps for ejecting compressed air out are formed among the dry ice spray pipe, the compressed air spray pipe and the nozzle cover. The compressed air ejected at a high speed through the first cavity drives the dry ice in the middle to increase the kinetic energy of the dry ice and play a role in flow stabilizing; and the compressed air of the second cavity wraps the dry ice at the outermost periphery, so that dryice ejection is more stable.

Description

technical field [0001] The invention relates to the field of dry ice cleaning, in particular to a dry ice cleaning nozzle with the function of stabilizing the flow direction of dry ice. Background technique [0002] Dry ice cleaning, also known as cold spray, uses compressed air as the power and carrier, and dry ice particles as the accelerated particles, which are sprayed onto the surface of the object to be cleaned through a special jet cleaning machine, and will not damage the surface of the object to be cleaned, especially the metal surface. It will not cause any harm and will not affect the finish of the metal surface. In order to achieve a good dry ice blasting effect, the design of the dry ice nozzle is very important. [0003] Such as figure 1 Shown, in existing patent literature (patent application publication number, CN107377531A), it discloses a kind of dry ice snowflake cleaning nozzle device, comprises nozzle main body, the outer cover that is connected with n...

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned prior art scheme, the compressed air in the previous proposal is only discharged through one cavity (i.e., the air flow channel), and the nozzle body and the opening of the outer cover in the previous proposal are located on the same horizontal plane, and the compressed air ejected has a large impact on the The degree of encapsulation of the sprayed dry ice particles is not strong, and it does not have a strong steady flow effect on the sprayed dry ice, and the flow direction of the dry ice after spraying is not stable enough

[0005] In addition, the main body of the nozzle is cylindrical, so the spray angle of the spray outlet of such a spray head is small, the coverage area after spraying is narrow, and the cleaning area is small

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