Shot blasting machine with dust pre-separation function and using method thereof

Abstract

The invention discloses an environment-friendly shot-blasting cleaning machine having a dust pre-separation function. The environment-friendly shot-blasting cleaning machine comprises a lifting machine, a separator, a working platform, a sand feeding bucket, a shot supply valve, a sand dropping pipe, a shot-blasting machine, a shot-blasting cleaning chamber, a screw conveyor and a shot sliding slot, and also comprises an exhaust fan and a shot accumulating device which is connected with the shot-blasting cleaning chamber in a communication mode; fine dust in the shot-blasting cleaning chamber is pumped away by the exhaust fan, and at the same time, steel shots, steel sand and large-particle dust are pre-separated by the shot accumulating device. The invention also designs a using method of the environment-friendly shot-blasting cleaning machine having the dust pre-separation function. The designed environment-friendly shot-blasting cleaning machine having the dust pre-separation function and the designed using method thereof can pre-separate the fine dust, prevent increasing of the dust concentration from damaging the performance of a shot circulation system and a shot-sand separator, and can reutilize resources while improving the working efficiency.

Description

technical field [0001] The invention relates to a shot blasting machine, in particular to an environment-friendly shot blasting machine with dust pre-separation function and its use method. Background technique [0002] Shot blasting equipment is firstly used to remove sand and scale on the surface of cast steel and iron castings in the foundry industry. Almost all steel castings, gray castings, malleable steel parts, and ductile iron parts must be shot blasted. This is not only to remove scale and sticky sand on the surface of the casting, but also an indispensable preparation process before the quality inspection of the casting. For example, the casing of a large gas turbine must be subjected to strict shot blasting before non-destructive testing to ensure the accuracy of the testing results. reliability. [0003] In the production of general castings, shot peening cleaning is an indispensable process to find surface defects of castings such as subcutaneous pores, slag po...

AI Technical Summary

Problems solved by technology

[0004] In recent years, since the cleaned resin sand castings have a thin layer of sand and paint, in the initial stage of workpiece cleaning, the projectile must first clean off the sand and paint layer attached to the surface of the casting, and the adhesion strength of these sand and paint is low, and it will fall off when touched. Therefore, the instantaneous sand and dust concentration is very high, and a large amount of sand and dust are mixed into the pellet circulation system, which makes the separation effect of pellets and sand deteriorate sharply.

[0005] In the prior art, only the upper part of the hoist is equipped with a shot sand separator, which is used to separate the shot blasting before the shot blasting. The separation method of the shot blasting is single, but due to the continuous increase of the dust concentration, the separation of the shot blasting in the separator is affected. The air volume and wind speed during separation, the long-term use of the equipment caused the poor sealing of the chamber, the relatively poor process state, and the large number of sand particles, oxide scales, and rust layers exacerbated the deterioration of the separation effect of the shot and sand. The mixed material is manually taken out and screened before adding, the cleaning efficiency is low, the labor intensity of the cleaning work is high, the environmental pollution is serious, and there is a waste of resources in the use of steel grit

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