All-weather conical sand maker and self-adjustment method

Abstract

The invention relates to an all-weather conical sand maker and a self-adjustment method. When an adjustable turnbuckle and an upper cover in the conical sand maker rotate clockwise, the rotation direction of a main shaft of the conical sand maker is anticlockwise, on the contrary, when the adjustable turnbuckle and the upper cover in the conical sand maker rotate anticlockwise, the rotation direction of a main shaft of the conical sand maker is clockwise. Hardness of a sand-making rolling compaction wall of a high-chromium cast iron wear-resistant mobile sleeve and hardness of a sand-making rolling compaction wall of a high-chromium cast iron wear-resistant fixed sleeve in the conical sand maker are higher than the hardness of high-chromium cast iron at the lower part of a sand-making rolling compaction opening. An axial semicircle surface of the inner wall of a copper sleeve of the main shaft in the conical sand maker is provided with an axial groove with a concave arc shape. The wall of the axial groove with the concave arc shape is provided with a fuel feed hole. An assembling axle hole in the lower part of the lower cover in the conical sand maker of the main shaft is provided with an annular boss. The external circular surface of a water cooling circular sleeve is provided with a plurality of loops of annular grooves. The external circular surface of the water cooling circular sleeve is matched with the inner wall of the assembling axle hole of the main shaft so as to form a multi-loop water cooling cavity.

Description

technical field [0001] The invention relates to a method that can fundamentally solve the problems of the cone sand making machine crash, motor current increase, and sand making chamber damage caused by the clogging of the sand chamber of the cone sand making machine during the sand making process of the cone sand making machine. The all-weather cone sand making machine and the method of not crashing; the second is to fundamentally solve the problem of high chromium cast iron anti-wear moving sleeve sand rolling wall and high chromium cast iron anti-wear fixed sleeve sand rolling in the cone sand making machine During the sand making process of the sand-making mouth (longkou) formed by the wall, due to the wear of the sandstone on the longkou wall, the longkou wall is ground into grooves by sand and stones, which in turn leads to the entire high-chromium cast iron anti-wear moving sleeve and high-chromium cast iron anti-wear The service life of the grinding sleeve is shortened...

AI Technical Summary

Problems solved by technology

[0005] The deficiencies in the above-mentioned 2 and 3 background technologies: one is not suitable for the heat treatment of the anti-wear moving sleeve and the anti-wear fixed sleeve in the conical sand making machine; the other is the matching of the technical parameters of the heat treatment process, and the effective local hardness cannot be realized. improve

[0006] 4. In the existing cone sand making machine, the anti-wear moving sleeve (broken wall) and the anti-wear fixed sleeve (rolling mortar wall) constitute the sand-making mouth (long mouth). The hardness of the wall is the same from top to bottom, so the wall of the sand making mouth (longkou wall) is first worn out and grooves are formed during the sand making (sand grinding) process (see attached Figure 12 ), which in turn leads to a significant shortening of the service life of the entire anti-wear moving sleeve and anti-wear fixed sleeve, and the cost of sand making remains high

The areas that need to be further improved are: First, because the contact surface between the main shaft and the inner copper sleeve (the main shaft copper sleeve) is dynamically supported by the oil film surface, and the force surface of the main shaft copper sleeve (the inner wall of the main shaft copper sleeve) is in the process of rotating the main shaft. half) is always in the process of gravity rolling, which causes the main shaft and the copper sleeve of the main shaft to be in a high temperature state all the time, resulting in the failure of the oil film; secondly, because the copper sleeve of the main shaft is composed of copper, tin and lead, when the main shaft and the copper sleeve of the main shaft are in a high temperature state, The tin (or tin and lead) that constitutes the copper sleeve of the main shaft is melted and overflows from the copper sleeve wall of the main shaft, causing the copper sleeve of the main shaft to form a honeycomb structure, and the strength is lost. The copper sleeve of the main shaft is broken and broken, causing the sand making machine to fail to work

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