Squeezing and tearing cutter for sugarcane in sugar refinery, and manufacturing process thereof

Abstract

The invention discloses a squeezing and tearing cutter for sugarcane in a sugar refinery. The cutter comprises a rotating shaft and a knife roll assembly mounted on the rotating shaft, wherein the surface of the knife roll assembly is further provided with at least 10 knives. The cutter is characterized in that the knife roller assembly comprises a rotating roller and covers mounted on the front and rear end faces of the rotating roller, and the outer surfaces of the covers are provided with reinforcing ribs; each knife comprises a knife body and a knife head arranged on the knife body, and the outer surface of the knife head is provided with at least two cladding layers prepared by using a plasma cladding process; the front corner of each knife head is provided with a main front rake angle and an auxiliary front rake angle from knife edge down; the back rake angle of each knife head is successively provided with a main back rake angle and an auxiliary back rake angle from knife edge down; an arc-shaped knife point chamfered edge is arranged between the front rake angle and the back rake angle of each knife head; and an auxiliary back rake angle fillet is arranged at the joint of each auxiliary back rake angle and the corresponding knife body. The cutter provided by the invention has the characteristics of stable product quality, high strength, reasonable structure, good durability, extensive adaptability, etc.

Description

technical field [0001] The invention relates to the technical field of sugar factory mechanical processing, in particular to a tearing cutter used for sugar cane pressing in a sugar factory and a manufacturing process thereof. Background technique [0002] Sugarcane, (scientific name: Saccharum officinarum) is a perennial tall solid herb of the genus Saccharum. The rhizome is thick and well developed. China Taiwan, Fujian, Guangdong, Hainan, Guangxi, Sichuan and Yunnan and other southern tropical regions are widely planted. Sugar cane is a temperate and tropical crop that is used as a raw material for the manufacture of sugar and for ethanol as an energy substitute. Sugarcane is rich in sugar and water, and also contains various vitamins, fats, proteins, organic acids, calcium, iron and other substances that are very beneficial to human metabolism. Sugarcane juice is rich, high in sugar content, and tastes sweet. People's favorite. In addition, sugarcane also has the fun...

AI Technical Summary

Problems solved by technology

[0006] However, after the inventor's market investigation, it has been found that although the above disclosed documents have improved the sugarcane cutter to a certain extent, or strengthened the organizational structure of the sugarcane knife, there are still some problems, such as: 1. Carbide is inlaid on the cutting edge of the sugarcane knife to increase the hardness of the sugarcane knife. However, although the hardness of the cutting edge of the sugarcane knife of this invention is high, the brittleness of the cemented carbide body is too high, so that the sugarcane knife The durability is not good; Document 2 and Document 3 are welding rods or welding wires of tungsten carbide materials that are surfacing welded on the cutter head by ordinary welding machines, so that the Rockwell hardness of the cutter head reaches 40-52 degrees, although it has more strength than the prior art High, but there are still two deficiencies: First, the area of ​​the tip of the cane knife is very small, and there is very little acceptable surfacing welding tungsten carbide

The tip of the knife is the most stress-bearing part and wears the fastest. Therefore, the method of overlaying tungsten carbide does not solve the wear-resistant problem of the tip; because most of the cane knives are made of 45# steel or A3 steel As a result, its hardness is not very high. When the tip of the knife hits hard objects such as sugarcane or impurities, the tip of the knife is easily broken, which will increase the distance between the cane knife and the conveyor belt, causing unstable pressing quality.

Images