Cooling Roller

Abstract

The invention provides a cooling grinding roller used in a roller mill, comprising a grinding roller body, a stepped hole is arranged in the grinding roller body, a heat transfer medium is arranged in the stepped hole in the grinding roller body, and an inner hole is arranged in the grinding roller shaft , one end of the grinding roller shaft is set in the stepped hole of the grinding roller body, and is closely matched with the grinding roller body, and the other end of the grinding roller shaft is provided with a heat dissipation pipe, and the heat dissipation pipe communicates with the stepped hole in the grinding roller body through the inner hole of the grinding roller shaft to dissipate heat There are heat dissipation fins on the pipe, and the heat dissipation pipe corresponds to the enhanced heat dissipation device installed on the mill shell. It is a hollow structure made of the grinding roller shaft. One end of the grinding roller shaft is set in the inner cavity of the grinding roller, and the other end is Heat dissipation pipes are installed, the inner cavity of the grinding roller is equipped with a medium, and the heat generated by the grinding roller body is directly absorbed by the medium. The heat dissipation and cooling of the grinding roller body has a simple structure and good heat dissipation effect. The medium is directly in contact with the grinding roller body, and the heat absorption efficiency is high.

Description

Technical field: [0001] The invention belongs to the technical field of grain processing machinery and equipment, and in particular relates to a cooling grinding roller used in a roller mill. Background technique: [0002] The roller mill is the main processing equipment in the milling industry, and the grinding roller is the core component of the roller mill. The role of the grinding roller is to squeeze and scrape the material, so as to achieve the effect of crushing and grinding the material. In the process of crushing and grinding, due to the action of extrusion and friction, a large amount of heat is generated between the grinding roller and the material. Although part of the heat is taken away by the material, a large amount of heat has accumulated in the grinding roller due to long-term work. As a result, the temperature of the roller body rises. In the stable state of the thermal balance of the grinding roller, the temperature of the roller body can reach 60-70°C,...

AI Technical Summary

Problems solved by technology

Although the patent adopts a labyrinth water stop device, the leakage of cooling water is still unavoidable, which increases the difficulty of equipment repair and maintenance, and the leaked water poses a threat to the quality of grain, oil and food

Therefore, water-cooled grinding rollers are greatly limited in practical use

[0004] CN2378120Y discloses "air-cooled fast roller mill", which is to install a door panel on the upper part of the body of the mill, and a baffle plate is set above the slow roller in the body, A baffle and a cover are set above the fast roller, and the cover covers the fast roller and is sealed at the contact with the baffle. The suction pipe is connected with the inner cavity of the body. This patent cools the fast roller and avoids the phenomenon of "pumping air". It can make the whole mill work under negative pressure, the dust will not escape, and at the same time, the temperature of the grinding roller can be reduced to a certain extent, but the cooling effect is not good, and the problem of high temperature of the grinding roller has not really been solved

This structure reduces the temperature of the grinding roller, but the structure is complicated, and the installation of heat pipes and fins is troublesome, and the heat pipes and fins isolate the heat transfer medium in the roller body from the medium in the heat pipe, which affects the heat transfer efficiency

The Chinese patent application number 200910138378.7 discloses a rotating heat pipe cooling grinding roller, which is provided with heat absorbing pipes and heat dissipation pipes at both ends of the grinding roller shaft, the heat absorbing pipe is arranged in the inner cavity of the grinding roller, and the heat absorbing pipe The aluminum tube is installed to absorb the heat of the grinding roller through the aluminum tube and the heat-absorbing tube, and transfer the heat to the medium in the heat-absorbing tube. This structure also has complex structure and installation, and the heat transfer efficiency of the aluminum tube and the heat pipe separates the medium from the roller body. not high problem

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