Calender roll with precise temperature control flow channel

Abstract

The invention relates to the field of calender rolls, particularly to a calender roll with a precise temperature control flow channel. The calender roll comprises a calender roll main body, wherein a calender roll section of the calender roll main body is provided with at least two groups of cooling pipelines penetrating through the calender roll section in the axial direction; each group of cooling pipelines comprises first oil inlet pipelines and first oil outlet pipelines; the tail ends of the first oil inlet pipelines and the first oil outlet pipelines in each group are communicated; the calender roll main body further comprises an oil transportation section adjacent to the calender roll section; at least one second oil inlet pipeline and at least one second oil outlet pipeline are arranged on the oil transportation section in the axial direction; an oil inlet communicated with the second oil inlet pipelines and an oil outlet communicated with the second oil outlet pipelines are formed in the surface of the oil transportation section; the first oil inlet pipelines are communicated with the second oil inlet pipelines; and the first oil outlet pipelines are communicated with the second oil outlet pipelines. According to the calender roll, a cooling medium in the flow channel can be in full contact with all parts of the roll, so that the heat of the roll body is uniformly taken away.

Description

technical field [0001] The invention relates to the field of calendering rolls, in particular to a calendering roll which can precisely control the surface temperature. Background technique [0002] Traditional cooling methods for calender rolls include external air cooling, internal single-tube water cooling, and internal spiral groove water cooling. These cooling methods are acceptable if the temperature control accuracy is not high. However, cooling with high temperature control requirements is difficult to achieve. [0003] There are two kinds of flow channels inside the traditional calender roll: single-pipe one-in-one-out flow channel and two-spiral flow channel. These two kinds of runners all have unfavorable factors for precise temperature control. The single-pipe one-in-one-out type will have processing dead angles, resulting in stagnant water. Because the spiral flow channel is too long, there will be a segmental temperature difference, that is, the temperature...

AI Technical Summary

Problems solved by technology

Since the temperature difference has a direct relationship to the deformation of high-precision rollers, it cannot meet the requirements for high-precision running rollers.

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