CN214516752U

CN214516752U - Rolling mill roller box and cooling water plate thereof

Info

Publication number: CN214516752U
Application number: CN202120828963.6U
Authority: CN
Inventors: 陈义
Original assignee: Anhui Sinosteel Nuotai Engineering Technology Co ltd
Current assignee: Anhui Sinosteel Nuotai Engineering Technology Co ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-10-29
Anticipated expiration: 2031-04-20

Abstract

The utility model provides a rolling mill roll box and cooling water plate thereof, wherein, the cooling water plate is provided with a water inlet and a plurality of spray holes with the spray directions pointing to the roll collar, the spray holes are arranged along the circumferential direction of the roll collar, and the spray holes are arranged on the central line of the thickness direction of the cooling water plate and comprise a middle spray hole, an upper spray hole and a lower spray hole; the middle spray holes are concentrically arranged with the central line of the cooling water plate in the thickness direction and correspond to the centers of the roll collar grooves; the upper spray holes and the central line of the cooling water plate in the thickness direction are eccentrically arranged so as to correspond to the upper edge of the roll collar rolling groove; the lower spray holes and the central line of the cooling water plate in the thickness direction are eccentrically arranged downwards to correspond to the lower edge of the roll collar rolling groove. The utility model discloses can cool off the roll collar grooving wider to effectively cool off whole grooving, the cooling effect is better.

Description

Rolling mill roller box and cooling water plate thereof

Technical Field

The utility model relates to a steel rolling equipment technical field, concretely relates to rolling mill roller box and cooling water plate thereof.

Background

The rolling mill is used as main equipment on a steel hot rolling production line and is used for rolling and forming blank pieces. The roll collar is an important working part on a rolling mill, and a steel material is rolled by using pressure generated when a pair or a group of roll collars roll.

Because the roll collar is in direct contact with the steel, the temperature of the roll collar can be rapidly increased in the rolling process, and the roll collar needs to be cooled to prevent the roll collar from deforming or cracking in order to ensure that the roll collar is always in a proper working temperature range.

At present, the roll collar is cooled by water, i.e. cooling water is sprayed to the roll collar through a cooling water plate so as to cool the roll collar. However, the cooling range of the existing cooling water plate to the roll collar groove is small, the cooling effect is not ideal enough, and the phenomenon of roll collar cracking caused by insufficient cooling is easy to occur.

Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a cooling water plate with a wider cooling range and more effective cooling effect.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a rolling mill roll box and cooling water plate thereof to solve prior art, the cooling water plate is little to the roller ring cooling range, the unsatisfactory problem of cooling effect.

In order to achieve the above object, the present invention provides a roller box cooling water plate, wherein the cooling water plate has a water inlet and a plurality of spray holes with a spray direction pointing to a roller ring, the plurality of spray holes are arranged along a circumferential direction of the roller ring, and the plurality of spray holes are arranged on a central line of the cooling water plate in a thickness direction and comprise a middle spray hole, an upper spray hole and a lower spray hole; wherein,

the middle spray hole is concentrically arranged with the central line of the cooling water plate in the thickness direction and corresponds to the center of the roll collar rolling groove;

the upper spray holes and the central line of the cooling water plate in the thickness direction are eccentrically arranged so as to correspond to the upper edge of the roll collar rolling groove;

the lower spray holes and the central line of the cooling water plate in the thickness direction are eccentrically arranged downwards to correspond to the lower edge of the roll collar rolling groove.

Preferably, the plurality of spray holes are sequentially and crosswise arranged along the circumferential direction of the roller ring in a mode of 'middle spray hole-upper spray hole-middle spray hole-lower spray hole'.

Preferably, the spraying direction of the spray holes forms an acute angle with the surface of the roll collar and inclines towards the rolled piece outlet direction of the roll collar.

Preferably, the cooling water plate is detachably mounted on the rolling mill roller box.

Preferably, the cooling water plate is provided with an arc hole with the water inlet hole as the center of a circle, and the arc hole is provided with a positioning pin capable of fixing the cooling water plate on the rolling mill roller box.

Preferably, the cooling water plate is of a split structure and is formed by oppositely combining and fixing an upper plate and a lower plate.

Has the following beneficial effects:

in the technical scheme, through middle orifice water spray cooling groove center, through the upper edge of upper orifice water spray cooling groove, through the lower edge of orifice water spray cooling groove down to make the collar rolling groove can be by the cooling water shower more widthways, thereby effectively cool off whole rolling groove. In a preferred embodiment, the spray direction of the spray holes is at an acute angle to the surface (tangential direction) of the roll collar and is inclined in the direction of the product exit of the roll collar. The spraying direction of the water flow is opposite to the rotating direction of the roll collar, so that the contact heat exchange time can be prolonged, and the cooling effect is enhanced; simultaneously, the corresponding roll collar central angle beta between the contact point of the roll collar and the rolled piece and the first spray hole spray line is smaller, so that the roll collar can rotate to the first spray point more quickly and is cooled rapidly.

The utility model discloses the second aspect provides a rolling mill roll box, including foretell cooling water plate. Since the cooling water plate provided by the first aspect is adopted, the same beneficial effects as the cooling water plate described in the first aspect are achieved, and the details are not repeated herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural view of a roller box cooling water plate according to an embodiment of the present invention;

FIG. 2 is a sectional view of the cooling water plate A-A of FIG. 1;

fig. 3 is a schematic structural view of the middle nozzle hole corresponding to the center of the roll collar groove according to the embodiment of the present invention;

fig. 4 is a schematic structural view of an upper nozzle hole corresponding to an upper edge of a roll collar groove according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a lower nozzle hole corresponding to the lower edge of a roll collar groove according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a rolling mill roll box according to an embodiment of the present invention;

reference numerals

10-cooling water plate; 10 a-upper plate; 10 b-a lower plate;

101-a water inlet hole;

102-water jet holes;

102 a-middle water jet; 102 b-upper water jet holes; 102 c-lower water jet;

103-center line;

104-an arc-shaped hole;

105-a locating pin;

20-roll collar;

201-rolling groove;

30-roll axis.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the following further detailed description of the embodiments of the present application with reference to the drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Referring to fig. 6, the roll collar 20 is installed on the roll shaft 30 in a tensioned manner, a group of roll collars roll to roll steel by using pressure generated when the roll collars roll, and the roll collars 20 are in direct contact with the steel, so that the temperature of the roll collars 20 is rapidly increased during rolling, and in order to ensure that the roll collars 20 are always in a proper working temperature range, the roll collars are cooled by spraying water through the cooling water plate 10.

Referring to fig. 1 and 2, the present invention discloses a cooling water plate for a roll box, the cooling water plate 10 has a water inlet 101 and a plurality of spray holes 102 with a spray direction pointing to a roll collar, and the plurality of spray holes 102 are arranged along a circumferential direction of the roll collar 20. The plurality of nozzle holes 102 are disposed on a center line 103 in a thickness direction of the cooling water plate, and include a middle nozzle hole 102a, an upper nozzle hole 102b, and a lower nozzle hole 102 c.

Referring to fig. 3, the middle nozzle 102a is concentrically disposed with the center line of the cooling water plate in the thickness direction to correspond to the center of the roll collar groove 201.

Referring to fig. 4, the upper nozzle holes 102b are eccentrically disposed with respect to the center line 103 of the cooling water plate in the thickness direction to correspond to the upper edge of the roll collar groove.

Referring to fig. 5, the lower nozzle holes 102c are eccentrically disposed below the center line of the cooling water plate in the thickness direction to correspond to the lower edge of the roll collar groove.

It is understood that, due to the above-mentioned structural arrangement, the center of the cooling groove is sprayed with water through the middle spray holes 102a, the upper edge of the cooling groove is sprayed with water through the upper spray holes 102b, and the lower edge of the cooling groove is sprayed with water through the lower spray holes 102c, so that the roll ring groove 201 can be sprayed with cooling water in a wider width, thereby effectively cooling the whole groove 201 and achieving a better cooling effect. Meanwhile, the cooling water flow is not excessively increased, and the water pressure of the spray holes is not reduced.

Preferably, the plurality of spray holes 102 are sequentially arranged in a cross manner along the circumferential direction of the roller ring 20 in a manner of 'middle spray hole-upper spray hole-middle spray hole-lower spray hole-middle spray hole-upper spray hole'. Because the temperature in the center of the rolling groove 201 is highest, the required cooling water spraying amount is the largest, and the required water spraying amount of each part of the rolling groove can be better balanced through the structure arrangement, so that a more effective cooling effect is ensured.

Referring to FIG. 1, it is further preferred that the spray direction of the spray holes 102 be at an acute angle to the surface (tangential) of the roll collar 20 and be inclined toward the product exit of the roll collar 20. The spraying direction of the water flow is opposite to the rotating direction of the roll collar 20, so that the contact heat exchange time can be prolonged, and the cooling effect is enhanced; meanwhile, the corresponding roll collar central angle beta between the contact point of the roll collar 20 and the rolled piece and the first spray hole water spray point is smaller, so that the roll collar 20 heated by the rolled piece can rotate to the first spray hole more quickly and is cooled rapidly. As shown in fig. 1, the plurality of nozzles 102 covers a curved surface corresponding to the central angle α of the roll collar 20, which is typically greater than 90 ° in actual operation.

More preferably, the cooling water plate 10 is detachably mounted to the mill roll housing. The cooling water plate 10 is provided with an arc hole 104 with the water inlet 101 as the center of a circle, and the arc hole is provided with a positioning pin 105 capable of fixing the cooling water plate 10 on the rolling mill roll box. When the roll collars 20 with different diameters are replaced, the cooling water plate 10 can be swung around the water inlet holes 101, so that the distance between the spray holes 102 and the roll collars 20 is kept at a distance with a better cooling effect.

Referring to fig. 1, 2 and 6, in order to facilitate the maintenance and installation of the cooling water plate, it is more preferable that the cooling water plate 10 is a split structure, and is formed by fastening an upper plate 10a and a lower plate 10b by screws.

Referring to fig. 6, the present invention further discloses a rolling mill roller box, which includes a roller shaft 30, a roller ring 20 mounted on the roller shaft 30, and the cooling water plate 10, and has the advantages corresponding to the cooling water plate 10, which are not described herein again.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A roller box cooling water plate is provided with a water inlet hole and a plurality of spray holes with the spray directions pointing to a roller ring, wherein the spray holes are arranged along the circumferential direction of the roller ring; wherein,

2. The roll box cooling water plate according to claim 1, wherein the plurality of spray holes are sequentially arranged crosswise in a manner of 'middle spray hole-upper spray hole-middle spray hole-lower spray hole' along a circumferential direction of the roll collar.

3. The roll cassette cooling water plate of claim 1 or 2, wherein the spray direction of the spray holes is at an acute angle to the surface of the roll ring and is inclined toward the product exit direction of the roll ring.

4. A roll cage cooling water plate as claimed in claim 1 or 2, wherein said cooling water plate is removably mounted on a rolling mill roll cage.

5. The roll box cooling water plate according to claim 4, wherein an arc hole with the water inlet hole as a center is formed in the cooling water plate, and a positioning pin capable of fixing the cooling water plate on the roll box of the rolling mill is arranged on the arc hole.

6. The roll box cooling water plate according to claim 1, wherein the cooling water plate is of a split structure and is formed by oppositely fixing an upper plate and a lower plate.

7. A rolling mill roll cassette comprising a cooling water plate as claimed in any one of claims 1 to 6.