A paint bucket for foundry sand core

Abstract

The invention relates to a coating tank for foundry sand cores. The coating tank is characterized by comprising a coating tank and an auxiliary material tank, wherein a liquid inlet is formed in the bottom of the coating tank, an overflow port is formed in the side wall of the top of the coating tank, a liquid outlet is formed in the bottom of the auxiliary material tank, a reflux inlet, which is not higher than the overflow port, is formed in the top of the auxiliary material tank, the coating tank and the auxiliary material tank are placed in parallel, the liquid inlet of the coating tank and the liquid outlet of the auxiliary material tank are communicated with each other through a circulating pipe, a circulating pump is installed on the circulating pipe, and the overflow port of the coating tank and the reflux inlet of the auxiliary material tank are communicated with each other through an overflow pipe. The coating tank can always operate by virtue of the circulating pump, and a coating flows from bottom to top in the coating tank so as to eliminate the trend of precipitating downwards of the suspended coating, ensure the constant concentration of the coating in the coating tank, guarantee the quality of dip coating, and ensure that the liquid level in the coating tank is maintained at the height of the overflow port constantly.

Description

technical field [0001] The invention relates to a paint barrel for casting sand cores, in particular to a constant liquid level and constant concentration paint barrel for casting sand cores. Background technique [0002] Sand Casting - A casting method in which castings are produced in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, the casting mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings. It has been the basic process in casting production for a long time. [0003] The mold used in sand casting is generally composed of an outer sand mold and a core. In order to improve the surface quality of castings, a layer of paint is often applied to the surface of sand molds and cores. The main components of the paint are powdery materials with high refractoriness and good high...

AI Technical Summary

Problems solved by technology

[0004] In the process of painting paint, with the consumption of paint, the liquid level in the paint bucket continues to drop. At the same time, as the dipping time goes by, the suspended paint sinks continuously, and the concentration of the paint continues to decrease, resulting in dip coating. Thickness is constantly changing, affecting the dipping quality of sand cores

When in use, it is necessary to manually stir and mix at intervals, which is labor-intensive; some use stirring paddles for stirring, and the disadvantage is that it is inconvenient for people to reach into the paint bucket for dipping after setting the stirring paddles.

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