CN201046465Y

CN201046465Y - Inner-cooling type hot-rolling intake roller

Info

Publication number: CN201046465Y
Application number: CNU2007200903206U
Authority: CN
Inventors: 朱书成; 曹国超; 王希彬
Original assignee: Xixia Longcheng Special Material Co Ltd
Current assignee: Xixia Longcheng Special Material Co Ltd
Priority date: 2007-05-10
Filing date: 2007-05-10
Publication date: 2008-04-16
Anticipated expiration: 2017-05-10

Abstract

The utility model concretely relates to an inner-cooling transport roller in hot-rolling process, belonging to a hot-rolling steel equipment technical field, which comprises a tube-like roller body, shaft ends fixedly arranged at two ends of roller body, a water inlet-outlet rotary joint, a deflector tube, a plurality of guiding discs. The rotary joint is connected with one shaft end, the deflector tube is positioned in the roller body and is communicated with a water feeding inner pipe of the rotary joint, a plurality of water outlet holes are arranged at the end of the deflector tube, the guiding discs are welded at a interval with the deflector tube drilled through the center bores of the guiding discs, the external circle surface of the guiding disc is closed to the inner wall of the roller body and a plurality of open slot holes are arranged along the circumference. The utility model has the advantages that the coolant channel comprises deflector tube, guiding discs and the inner wall of the roller body arranged in the roller body; therefore the thermal radiation energy for the transport roller can be taken away by the cooling water in the inner water-cooling way, the temperature of the transport roller is effectively reduced, the temperature difference of the roller surface is largely decreased, uneven heat stress is obviously diminished, thus the situation that the transport roller is bending deformed is largely reduced.

Description

The inner-cooled hot rolling conveying roller

Technical field

The utility model relates to the hot-rolled steel equipment technical field, specifically is a kind of inner-cooled hot rolling conveying roller.

Background technology

On conventional steel mill hot rolling line, the rotation that the requirement that conveying roller is carried with steel plate rolling before and after the milling train does not stop, the thermal exposure that each position of conveying roller circumference is subjected to hot rolled plate is identical substantially, the suffered thermal stress in each position of circumference is also basic identical, so conveying roller do not occur bending and deformation substantially, or say that deflection is very little; Needs along with rolling high-strength degree steel plate, the controlled rolling and cooling technology is arisen at the historic moment, controlling cold is that hot steel plate is carried out necessary air cooling according to specification requirement on conveying roller, so just make hot steel plate heighten in the conveying roller regional area time of staying, cause the heat radiation inequality of hot steel plate to conveying roller, slack or the slewing area of conveying roller hour particularly, it is strong that the roll surface that is close with steel plate is subjected to heat radiation, and the back side be subjected to heat radiation will be much smaller, it is big that the thermal stress inequality makes conveying roller be subjected to bending stress, is easy to occur bending and deformation, cause beat excessive, can not normally use, scrap too early.Not only cause cost significantly to increase, and because replacing is more frequent, and the activity duration obviously reduces, productivity effect reduce.

Summary of the invention

The purpose of this utility model provides a kind of inner-cooled hot rolling conveying roller, by the temperature of reduction conveying roller, thus the problem that the flexural deformation that the suffered thermal stress inequality of conveying roller that solution causes because of the heat radiation inequality is brought was lost efficacy.

For realizing the utility model purpose, the utility model provides a kind of inner-cooled hot rolling conveying roller, comprise the tubular body of roll, be fixedly mounted on the spindle nose at body of roll two ends, also comprise an Inlet and outlet water swivel joint, a mozzle, some flow guiding discs, described swivel joint is connected on the spindle nose, described mozzle is positioned at the body of roll and communicates with the water inlet pipe of swivel joint, the end of mozzle has some apopores, weld with the mozzle that passes centre bore it on described some flow guiding discs compartment of terrain, and flow guiding disc periphery and body of roll inwall are pressed close to and some opening slotted eyes are circumferentially arranged.

The cooling water channel of the utility model by between the inner setting of the conveying roller body of roll is by mozzle, flow guiding disc, body of roll inwall, constituting, the heat radiation energy that mode by inner water-cooled is subjected to conveying roller is taken away by cooling water, can effectively reduce the temperature of conveying roller, the roll surface temperature difference is significantly reduced, the thermal stress inequality obviously reduces, thereby the situation that conveying roller is occured bending and deformation alleviates greatly.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is along the A-A cutaway view among Fig. 1.

The specific embodiment

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

As shown in Figure 1 and Figure 2, the inner-cooled hot rolling conveying roller, the body of roll 1 is made by thick-walled pipe,

spindle nose

2,3 is welded on the two ends of the body of roll 1, the body of roll 1 inner surface and

spindle nose

2,3 inner faces constitute body of roll inner chamber, the swivel joint 4 that is used for Inlet and outlet water is connected the outer end of spindle nose 2 by its ring flange 41, the interior pipe 42 of swivel joint 4 is a water inlet pipe, the looping pit that forms between outer tube 43 and the interior pipe 42 is an apopore, interior pipe 42 stretches into the body of roll 1 inner chamber, interior pipe 42 inserts the mozzle 5 that is positioned at the body of roll, forms less matched in clearance between the two, and the end of mozzle 5 has some apopores 51.Flow guiding disc 6 has 7, flow guiding disc 6 has centre bore, mozzle 5 passes the centre bore of 7 flow guiding discs 6 successively and welds with spaced apart 7 flow guiding discs 6, and the periphery of flow guiding disc 6 is pressed close to the body of roll 1 inwall, and 8 semicircle opening slotted eyes 61 are circumferentially arranged on flow guiding disc 6 peripheries.

During application, the water inlet of connection cooling water, cooling water enters by the interior pipe 42 of swivel joint 4, flow out from afterbody delivery port 51 behind mozzle 5, flow out by the semicircle opening slotted eye on 7 flow guiding discs 6 61 successively then, outer tube 43 and the looping pit between the interior pipe 42 by swivel joint flows out at last, so cooling water circulation, the heat that hot rolled plate heat radiation that the body of roll 1 is subjected to produces is taken away in the exchange of cooling water and the body of roll 1 inner surface heat, effectively reduces the temperature of conveying roller.When particularly being applied in steel mill's rolling high-strength degree steel plate control cooling working procedure, because the reduction of conveying roller temperature reduces the roll surface circumference temperature difference greatly, the thermal stress inequality obviously reduces, and the conveying roller failure phenomenon that occurs bending and deformation alleviates greatly.

Claims

1. inner-cooled hot rolling conveying roller, comprise the tubular body of roll (1), be fixedly mounted on the spindle nose (2) at the body of roll (1) two ends, (3), it is characterized in that: also comprise an Inlet and outlet water swivel joint (4), one mozzle (5), some flow guiding discs (6), described swivel joint (4) is connected on the spindle nose (2), described mozzle (5) is positioned at the body of roll (1) and communicates with the water inlet pipe (42) of swivel joint (4), the end of mozzle (5) has some apopores (51), weld with the mozzle (5) that passes centre bore it on described some flow guiding discs (6) compartment of terrain, and flow guiding disc (6) periphery and the body of roll (1) inwall are pressed close to and some opening slotted eyes (61) are circumferentially arranged.