Screening device for casting sand

Abstract

The invention discloses a screening device for casting sand. The screening device includes a machine shell, supporting legs are arranged at the four corners of the bottom face of the machine shell, asupporting plate is horizontally welded to the bottom of the right side face of the machine shell, a driving motor is mounted on the upper surface of the supporting plate, and an inner cavity of the machine shell is separated by a separating plate into a conveying cavity located at the top of the inner cavity of the machine shell and a screening cavity located at the bottom of the inner cavity ofthe machine shell; and a feeding opening is formed in the top of the right end of the conveying cavity. According to the screening device for casting sand, the driving motor is used to drive a screentube to rotate to screen the sand, compared with a traditional vibration screening method, a rolling screen can flip the sand, the accumulation of the sand is prevented, the sand can also be preventedfrom clogging a screening hole, so that the sand can be screened more thoroughly; and before the sand enters the screen tube, a feeding screw rod is used for feeding, the sand can be made to enter the screen tube at the uniform speed, the fact that the sand is accumulated in the screen tube due to more sand entering the screen tube once is prevented, and the screening effect is improved.

Description

technical field [0001] The invention relates to the field of foundry processing, in particular to a screening device for foundry sand. Background technique [0002] Casting is a kind of metal thermal processing technology mastered by human beings earlier, with a history of about 6,000 years. China has entered the heyday of bronze castings between 1700 BC and 1000 BC, and the craftsmanship has reached a very high level. Casting refers to the forming method of pouring the smelted metal into the mold, and obtaining a casting with a certain shape and performance after it solidifies. The metal parts obtained by the casting method are called castings. Most of the cast materials are metals that are originally solid but heated to liquid (for example: copper, iron, aluminum, tin, lead, etc.). There are many casting methods, mainly including sand casting, metal casting, pressure casting, centrifugal casting and melting Die casting, etc., among which sand casting is the most widely u...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a screening device for foundry sand, which solves the problems of easy accumulation, low efficiency and incomplete screening during the screening process of the casting sand

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