CN203526202U

CN203526202U - Internal cooling roller

Info

Publication number: CN203526202U
Application number: CN201320583258.XU
Authority: CN
Inventors: 张燕
Original assignee: SANXIN HEAVY INDUSTRY MACHINERY Co Ltd
Current assignee: SANXIN HEAVY INDUSTRY MACHINERY Co Ltd
Priority date: 2013-09-22
Filing date: 2013-09-22
Publication date: 2014-04-09
Anticipated expiration: 2023-09-22

Abstract

The utility model relates to the technical field of rollers, in particular to an internal cooling roller. The internal cooling roller comprises a roller body, a conical water inlet groove is formed in the axial direction of the center axis of the roller body, the size of a water inlet of the conical water inlet groove is larger than that of a water outlet, and a plurality of diversion grooves are evenly and equally distributed in the perpendicular direction of the conical water inlet groove. Because a cooling water channel is formed in the internal cooling roller, the temperature on the surface of the roller body can be lowered, it is guaranteed that the temperature on the surface of the roller body is uniform, roller fracture caused by thermal stress on the roller generated by large internal and external temperature difference of the roller is effectively prevented, and thus the service life of the roller is prolonged.

Description

Interior cooling roll

Technical field

The utility model relates to the technical field of roll, cooling roll in especially a kind of cooling effect is significant.

Background technology

Existing roll is mostly solid roll, the cooling effect of himself a little less than, roll body is because contacting for a long time with workpiece, roll body surface temperature can sharply rise, it is slower that yet the temperature of roll body inside rises, so the inside and outside temperature difference of roll body is larger by causing, is easy to cause thermal stress, and then causes the fracture of roll body.

In order to solve the problem that roll body internal-external temperature difference is large, those skilled in the art improves this solid roll, in the inside of roll body, offer cooling-water duct, yet because the structure of these cooling-water ducts is not quite reasonable, therefore its cooling effect neither be fine, also can cause the non-uniform temperature on roll body surface simultaneously, can not really solve the problem that roll body produces thermal stress.

Utility model content

The technical problems to be solved in the utility model is: in order to solve the problem proposing in above-mentioned background technology, the utility model provides a kind of interior cooling roll, the cooling water passage structure that its inside is offered is very reasonable, allow roll body surface be lowered the temperature fully simultaneously, the temperature that guarantees roll body surface keeps being uniformly distributed, can also reduce roll body internal-external temperature difference, reach good cooling effect simultaneously.

The utility model solves the technical scheme that its technical problem adopts: a kind of interior cooling roll, it comprises roll body, on the axial direction of the central shaft of roll body, offer a taper intake chamber, the size of the water inlet of taper intake chamber is greater than the size of delivery port, and in the vertical direction of taper intake chamber, evenly equity is distributed with many splitter boxs.

When cooling water enters after the water inlet of intake chamber, because the size of the water inlet of taper intake chamber is greater than the size of delivery port, so except the direction of a part of cooling water flow to delivery port, remaining cooling water will be got into be uniformly distributed in taper intake chamber many splitter boxs around, can guarantee that like this roll body surface is lowered the temperature simultaneously fully, the temperature on roll body surface also can be very even, also plays the object that reduces roll body internal-external temperature difference simultaneously.

In order to meet the user demand of different occasions, the diameter of the effective active section of roll body is 500～1800mm, and the length of the effective active section of roll body is 1000～4300mm.

The beneficial effects of the utility model: this interior cooling roll inside offers more reasonably cooling-water duct of structure, roll body surface is lowered the temperature simultaneously fully, cause the temperature on roll body surface to keep equal state, the internal-external temperature difference of roll body is also controlled at lower state, not only can effectively prevent that roll from causing fracture of roller because internal-external temperature difference forms greatly roll thermal stress, also extended the service life of roll.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is structural representation of the present utility model.

In figure: 1, roll body, 2, central shaft, 3, taper intake chamber, 31, water inlet, 32, delivery port, 4, splitter box.

The specific embodiment

Interior cooling roll as shown in Figure 1, comprise roll body 1, on the axial direction of the central shaft 2 of roll body 1, offer a taper intake chamber 3, the size of the water inlet 31 of taper intake chamber 3 is greater than the size of delivery port 32, and in the vertical direction of taper intake chamber 3, evenly equity is distributed with many splitter boxs 4.

When cooling water enters after the water inlet 31 of taper intake chamber 3, because the size of the water inlet 31 of taper intake chamber 3 is greater than the size of delivery port 32, so except the direction of a part of cooling water flow to delivery port 32, remaining cooling water will be got into be uniformly distributed in taper intake chamber 3 many splitter boxs 4 around, can guarantee that like this roll body 1 surface is lowered the temperature simultaneously fully, the temperature on roll body 1 surface also can be very even, also plays the object that reduces roll body 1 internal-external temperature difference simultaneously.

In order to meet the user demand of different occasions, the diameter of roll body 1 effective active section is 500～1800mm, and the length of roll body 1 effective active section is 1000～4300mm.

In order to guarantee the structural strength of roll body 1, a kind of the making that roll body 1 adopts in Chrome-plating, Ni-Cr-Mo cast iron, chrome molybdenum spheroidal graphite cast-iron, Ni-Cr-Mo spheroidal graphite cast-iron, pearlite ductile iron, bainite ductile centrifugal compounded cast iron, rich chromium cast iron, alloy cast steel, half steel, graphitic steel, high chrome or high-speed steel.

Claims

1. cooling roll in a kind, comprise roll body (1), it is characterized in that: on the axial direction of the central shaft (2) of described roll body (1), offer a taper intake chamber (3), the size of the water inlet (31) of taper intake chamber (3) is greater than the size of delivery port (32), and in the vertical direction of taper intake chamber (3), evenly equity is distributed with many splitter boxs (4).

2. interior cooling roll according to claim 1, is characterized in that: described roll body (1) the effectively diameter of active section is 500～1800mm, and roll body (1) the effectively length of active section is 1000～4300mm.