CN2435713Y

CN2435713Y - Tubular cooling toothed roller

Info

Publication number: CN2435713Y
Application number: CN 00247408
Authority: CN
Inventors: 陈超
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-22
Filing date: 2000-08-22
Publication date: 2001-06-20
Anticipated expiration: 2010-08-22

Abstract

The utility model relates to a tubular type cooling toothed roller which is used for a sintering vertical furnace of iron mineral powder pellets. The utility model comprises a toothed roller body with a water inlet pipe, a water outlet pipe and an inner cavity, and a core axle is arranged in the inner cavity. Because the core axle exists, the cross-sectional area of the inner cavity can be decreased, which prompts the water entering the gear roller to flow through the surrounding of the core axle; thereby, the water level of the toothed roller can be improved; in this way, the upper part of the gear roller can not only be simultaneously cooled, and the cooling is also uniform; the thermal fatigue load of the upper part of the gear roller can be decreased, and thus, the service life of the gear roller can be increased.

Description

Tubular cooling discaling roll

The utility model relates to the tubular cooling discaling roll that uses in a kind of Iron Ore Powder pelletizing sintering shaft furnace.

In the shaft furnace of steel enterprise sintering Iron Ore Powder pelletizing, use at present the discaling roll of integral cast steel or assembling form always.This discaling roll is made up of the part that has tooth on its water-in and water-out tube portion and the middle inner chamber that has hollow, the outer surface, and its water-in and water-out tube portion is thinner, and intracavity section of its centre is bigger.In use, the discaling roll horizontal positioned, cooling water is entered by its water inlet,, is flowed out by its delivery port so that the toothed portion on its outer surface is cooled off through inner chamber again.Have air because tooth portion inner chamber exceeds the part of inlet tube and outlet tube, when the cooling water flow velocity was little, cooling water can't arrive the top of tooth portion inner chamber, so just can not cool off the tooth portion on top effectively.Yet high temperature furnace charge malleation is in the tooth portion on discaling roll top in the shaft furnace, so the stressed maximum of discaling roll, part no-cooling-water that temperature is the highest are cooled off it.When discaling roll slowly rotates, when the very high part of temperature forwarded the position of cooling water to after top was heated, the water Quench that is cooled again, so its heat fatigue load is quite big, therefore has a strong impact on the service life of discaling roll.

The purpose of this utility model is: it is comparatively even to design a kind of cooling, can prolong the discaling roll tubular cooling discaling roll in service life.

The technical solution of the utility model is to add mandrel in the inner chamber of original discaling roll body centre.

Because the existence of mandrel, reduced inner chamber area of section, impel the water that enters discaling roll by flowing through around the mandrel, thereby improved water level wherein, this not only makes the top of discaling roll can obtain cooling simultaneously, also make its cooling comparatively even, reduced the heat fatigue load on discaling roll top, thereby can increase the service life of discaling roll.

Can also increase water velocity if flight is set on the outer surface of mandrel, further improve cooling effect.

For guaranteeing that cooling water touches the upper surface of discaling roll inner chamber, the internal diameter of flight maximum gauge and discaling roll inner chamber is adapted.

Mandrel can adopt solid construction in the utility model, also can be hollow-core construction.When it is hollow-core construction, adopt the version that makes the one end opening.

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.

Fig. 1 is the cutaway view of the utility model embodiment;

Fig. 2 is the A-A view of Fig. 1;

Wherein, 1-discaling roll body, 2-water inlet pipe, 3-mandrel, 4-flight, 5-outlet pipe.

As shown in the figure, present embodiment comprises discaling roll body 1, and it has water inlet pipe 2 and outlet pipe 5, is an inner chamber between the inlet tube and outlet tube, has tooth on discaling roll body 1 outer wall corresponding with this inner chamber.One mandrel 3 is arranged in inner chamber, and it is the hollow-core construction of an end opening, is shaped on flight 4 on the outer surface of mandrel 3, and the external diameter of flight 4 and the internal diameter of inner chamber adapt.

Claims

1, a kind of tubular cooling discaling roll comprises the middle discaling roll body (1) that has inlet tube and outlet tube (2), (5) and inner chamber, it is characterized in that: mandrel (3) is housed in the inner chamber.

2, tubular cooling discaling roll according to claim 1 is characterized in that: have flight (4) on the outer surface of mandrel (3).

3, tubular cooling discaling roll according to claim 2, it is characterized in that: the cross section external diameter of flight (4) and the internal diameter of inner chamber adapt.

4, according to claim 1 or 2 or 3 described tubular cooling discaling rolls, it is characterized in that: said mandrel (3) is a solid construction.

5, according to claim 1 or 2 or 3 described tubular cooling discaling rolls, it is characterized in that: said mandrel (3) is hollow-core construction.

6, tubular cooling discaling roll according to claim 5 is characterized in that: an end opening of mandrel (3).