Wet sand spraying mechanism

Abstract

The invention provides a wet sand spraying mechanism. The sand spraying mechanism comprises an air inlet device, a sand spraying barrel which is used for storing molding sand and is arranged below the air inlet device, and a sand spraying hopper which is arranged below the sand spraying barrel and is provided with a sand spraying nozzle, wherein the air inlet device is used for spraying downward sand spraying air flow into the sand spraying barrel; the sand spraying barrel is internally provided with an inner sleeve; the molding sand is stored in the inner sleeve; the bottom of the inner sleeve is communicated with the sand spraying hopper; a gas channel is formed between the inner sleeve and the sand spraying barrel; the upper part of the inner sleeve and the gas channel are communicated with the air inlet device; air flow holes are formed in the side wall of the inner sleeve in a penetration manner. When compressed air is introduced, air, which flows through the air flow holes or a filtering net, has the effect of dispersing the molding sand which has poor mobility and is wet and united, thereby preventing the molding sand from being concreted together; the molding sand in the inner sleeve is dispersed and then is sprayed out of the sand spraying hopper so as to meet the application requirements of core making engineering with sustainable and cyclic movement.

Description

technical field [0001] The invention relates to a sand shooting mechanism, in particular to a sand shooting mechanism for green sand for manufacturing sand cores. Background technique [0002] The mechanical casting industry plays an important role in the national economy. In casting engineering, casting core materials are filled into the mold cavity through core equipment or manually, and are prepared into core parts with the same shape as the inner mold. Called the core project. The main equipment in the core-making project is called the core-making equipment. Usually, the core-making equipment is composed of air supply mechanism, sand feeding mechanism, sand shooting mechanism, mold and action mechanism, pneumatic and electric control mechanism and other systems. The main function of the air supply mechanism is to provide the conveying medium and power of the core-making material to the equipment; the function of the sand-filling mechanism is to provide storage and conv...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the fluidity of the molding sand of the water-soluble inorganic binder is poor, and it is difficult to shoot the core normally by using the usual wet sand core shooting mechanism, which cannot meet its core-making requirements

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