CN112303237A

CN112303237A - Sealing device of rolling mill

Info

Publication number: CN112303237A
Application number: CN202011367291.XA
Authority: CN
Inventors: 卞云蕾; 徐明振; 龚伟
Original assignee: Lianfeng Steel Zhangjiagang Co Ltd
Current assignee: Lianfeng Steel Zhangjiagang Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-02-02

Abstract

The invention discloses a sealing device of a rolling mill, which comprises an outer sliding ring and an eccentric disc; one side of the outer slip ring is provided with an inner edge bulge and an outer edge bulge, and the outer edge bulge is at least provided with a circle of sealing groove; one side of the eccentric disc is provided with a groove corresponding to the outer edge bulge, and at least one circle of sealing bulge is arranged in the groove; sealed arch cooperatees with the seal groove, and installs first O type sealing washer between sealed arch and seal groove, and this application carries out optimal design through the structure to eccentric disc and outer sliding ring, prevents effectively that impurity such as external cooling water and iron scale from getting into in the sliding ring, improves sealed effect.

Description

Sealing device of rolling mill

Technical Field

The invention belongs to the technical field of rolling mill equipment, and particularly relates to a sealing device of a rolling mill.

Background

In the prior art, in order to prevent impurities such as cooling water and iron scale of the rolling mill from entering the lubricating oil pollution in the thin oil station, a worker is required to check the sealing condition of the rolling mill in the maintenance time, namely, whether the double-lip sealing ring is seriously worn or not is checked, the double-lip sealing ring is replaced according to the actual wear condition, but in the actual rolling process, the wear speed of the double-lip sealing ring is high, the service time is short, and because the maintenance time is short, the wear condition of the double-lip sealing ring cannot be timely found and the double-lip sealing ring is seriously worn and replaced, so that the impurities such as the cooling water and the iron scale enter the lubricating oil pollution in the thin oil station, the wear of parts of the equipment is aggravated, the operation safety of the equipment is threatened, and the consumption of a filter element is increased, therefore, the problem existing in the.

Disclosure of Invention

In order to solve the defects in the prior art, the invention designs the sealing device of the rolling mill, which effectively prevents external cooling water, iron oxide scales and other impurities from entering the slip ring and improves the sealing effect by optimally designing the structures of the eccentric disc and the outer slip ring.

The technical scheme adopted by the invention is as follows:

a sealing device of a rolling mill comprises an outer sliding ring and an eccentric disc; one side of the outer slip ring is provided with an inner edge bulge and an outer edge bulge, and the outer edge bulge is at least provided with a circle of sealing groove; one side of the eccentric disc is provided with a groove corresponding to the outer edge bulge, and at least one circle of sealing bulge is arranged in the groove; the sealing bulge is matched with the sealing groove, and a first O-shaped sealing ring is arranged between the sealing bulge and the sealing groove.

Furthermore, the number of the sealing grooves and the number of the sealing bulges are the same, so that the sealing grooves and the sealing bulges are arranged in a one-to-one correspondence manner, and a first O-shaped sealing ring is arranged between each group of matched sealing grooves and the sealing bulges.

Furthermore, a sealing ring mounting groove is formed in the inner wall surface of the inner edge bulge, and a third O-shaped sealing ring is mounted in the sealing ring mounting groove, so that sealing between the outer sliding ring and the roller shaft is realized.

Further, evenly set up a plurality of notches that are equipped with along circumference on outer along bellied outer wall.

Furthermore, a sealing ring mounting groove is formed in the outer wall surface of the eccentric disc, and a second O-shaped sealing ring is mounted in the sealing ring mounting groove.

Furthermore, the inner wall surface of the eccentric disc is provided with a double-lip sealing ring.

Further, when the double-lip sealing ring is assembled, the outer sliding ring and the inner sliding ring are arranged oppositely, and the upper end and the lower end of the double-lip sealing ring are respectively in close contact with the outer sliding ring and the inner sliding ring.

The invention has the beneficial effects that:

according to the rolling mill sealing device provided by the invention, only the structure of the existing outer sliding ring and the eccentric disc is optimized and modified, and particularly, the corresponding sealing groove and sealing bulge are arranged at the contact position between the outer ring of the outer sliding ring and the eccentric disc, the sealing groove and the sealing bulge are mutually clamped, and an O-shaped sealing ring is arranged between the sealing groove and the sealing bulge, so that the sealing effect between the outer sliding ring and the eccentric disc is further improved. The rolling mill sealing device composed of the outer sliding ring and the eccentric disc can effectively reduce the impurities such as external cooling water, iron scale and the like from entering the sliding ring, thereby reducing the abrasion of the double-lip sealing ring, prolonging the service time of the double-lip sealing ring, and ensuring the quality of lubricating oil in a thin oil station

In order to conveniently overhaul, the groove openings are formed in the circumferential direction of the outer wall of the outer sliding ring, when the outer sliding ring needs to be disassembled, the prying bar is only needed to be arranged in the groove openings, the outer sliding ring can be pried out, and the disassembly is convenient.

Drawings

FIG. 1 is a schematic view of an assembly of an outer slip ring and an eccentric disc of a sealing device of a rolling mill according to the present application;

FIG. 2 is a schematic view of an outer slip ring structure of a rolling mill seal of the present application;

FIG. 3 is a schematic view of the eccentric disc structure of a sealing device of the rolling mill according to the present application;

FIG. 4 is a schematic view of the overall assembly of a rolling mill seal arrangement according to the present application;

in the figure, 1, an outer sliding ring, 1-1, an inner edge bulge, 1-2, an outer edge bulge, 1-3, an outer sliding ring groove, 2, an eccentric disc, 3, an eight-shaped plate, 4, a double-lip sealing ring, 5, an inner sliding ring, 6, a rolling roll shaft, 7, a notch, 8, a first O-shaped sealing ring, 9, a second O-shaped sealing ring, 10, a third O-shaped sealing ring, 11, a fourth O-shaped sealing ring, 12, a groove, 13, a sealing groove, 14, a roll box panel, 15, a sealing ring mounting groove, 16 and a sealing bulge.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A rolling mill seal arrangement as shown in figure 1, comprising an outer slide ring 1 and an eccentric disc 2; the outer sliding ring 1 is an annular component, an inner edge bulge 1-1 and an outer edge bulge 1-2 are respectively arranged on the surface of the outer sliding ring 1 matched with the eccentric disc 2, and an outer sliding ring groove 1-3 is arranged between the inner edge bulge 1-1 and the outer edge bulge 1-2. A sealing ring installation groove 15 is formed in the inner wall surface of the inner edge bulge 1-1, and a third O-shaped sealing ring 10 is installed in the sealing ring installation groove 15. At least one circle of sealing groove 13 is formed on the outer edge bulge 1-2, so that the sectional view of the outer edge bulge 1-2 is a tooth-shaped structure as shown in fig. 2.

More specifically, the outer slip ring 1 is arranged opposite to the inner slip ring 5, and the roll shaft 6 passes through the inner slip ring 5 and the outer slip ring 1 respectively; a sealing ring installation groove 15 is formed in the inner wall surface of the inner sliding ring 5, and a fourth O-shaped sealing ring 11 is installed in the sealing ring installation groove 15; the sealing between the inner and outer slip rings 5, 1 and the roll shaft 6 is achieved by sealing rings on the inner and outer slip rings 5, 1.

As shown in fig. 3, a groove 12 corresponding to the outer edge protrusion 1-2 is formed on the surface of the eccentric disc 2 matching with the outer slip ring 1, and at least one circle of sealing protrusion 16 is formed in the groove 12, the sealing protrusion 16 matches with the sealing groove 13, and the height h1 of the sealing protrusion 16 is less than the depth h2 of the sealing groove 13, so that the first O-ring 8 is installed between the sealing protrusion 16 and the sealing groove 13. A sealing ring mounting groove 15 is arranged on the outer wall surface of the eccentric disc 2, and a second O-shaped sealing ring 9 is mounted in the sealing ring mounting groove 15.

More specifically, in order to facilitate the disassembly of the outer sliding ring 1, a plurality of notches 7 are uniformly arranged on the outer wall of the outer edge bulge 1-2 along the circumferential direction; when the outer sliding ring 1 needs to be taken down, the sliding ring can be pried out quickly only by arranging a prying bar in the notch 7, and the disassembly is convenient.

In order to explain the technical solution protected by the present invention more clearly, the following is described in detail with reference to the overall assembly schematic diagram 4 of the rolling mill sealing device of the present application.

In the embodiment, 2 circles of coaxial sealing grooves 13 which are arranged at equal intervals are formed on the outer edge bulge 1-2; the groove 12 of the eccentric disc 2 is provided with 2 circles of sealing protrusions 16 corresponding to the sealing grooves 13.

(1) During assembly, the splayed plate 3 is firstly arranged on the roller box panel 14;

(2) a fourth O-shaped sealing ring 11 is arranged in a sealing ring mounting groove 15 of the inner sliding ring 5, and the inner sliding ring 5 is sleeved at the shaft step of the roll shaft 6;

(3) sleeving the double-lip sealing ring 4 and the second O-shaped sealing ring 9 on the eccentric disc 2; the lower end of the double-lip sealing ring 4 is tightly contacted with the inner slip ring 5; and the second O-shaped sealing ring 9 is used for realizing the sealing between the eccentric disc 2 and the splayed plate 3.

(4) A third O-shaped sealing ring 10 is arranged on an outer sliding ring 1, the outer sliding ring 1 is sleeved at the shaft step of a roller shaft 6, and outer sliding ring grooves 1-3 are tightly contacted with the upper end of a double-lip sealing ring 4; meanwhile, the 2 sealing grooves 13 on the outer edge protrusions 1-2 correspond to the 2 sealing protrusions 16 on the groove 12 of the eccentric disc 2 one by one, and the first O-shaped sealing rings 8 are further arranged between the sealing protrusions 16 and the sealing grooves 13, so that the sealing effect between the outer sliding ring 1 and the eccentric disc 2 is improved.

In the embodiment, the inner edge bulge 1-1, the outer edge bulge 1-2, the outer sliding ring groove 1-3, the sealing ring mounting groove 15, the sealing groove 13, the groove 12 and the sealing bulge 16 are all in an annular structure.

The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.

Claims

1. A rolling mill sealing device is characterized by comprising an outer sliding ring (1) and an eccentric disc (2); one surface of the outer sliding ring (1) is provided with an inner edge bulge (1-1) and an outer edge bulge (1-2), and the outer edge bulge (1-2) is at least provided with a circle of sealing groove (13); one side of the eccentric disc (2) is provided with a groove (12) corresponding to the outer edge bulge (1-2), and at least one circle of sealing bulge (16) is arranged in the groove (12); the sealing bulge (16) is matched with the sealing groove (13), and a first O-shaped sealing ring (8) is arranged between the sealing bulge (16) and the sealing groove (13).

2. A rolling mill seal according to claim 1, characterized in that the number of seal grooves (13) and seal protrusions (16) is the same, so that the seal grooves (13) and seal protrusions (16) are arranged in one-to-one correspondence, and a first O-ring seal (8) is installed between each set of cooperating seal grooves (13) and seal protrusions (16).

3. A rolling mill sealing device according to claim 1 or 2, characterized in that the inner wall surface of the inner edge bulge (1-1) is provided with a seal ring mounting groove (15), and the sealing between the outer slip ring (1) and the roll shaft (6) is realized by mounting a third O-ring (10) in the seal ring mounting groove (15).

4. A rolling mill seal according to claim 3 characterised in that a plurality of notches (7) are provided circumferentially uniformly in the outer wall of the outer rim protrusion (1-2).

5. A rolling mill seal according to claim 4 characterised in that the eccentric disc (2) is provided with a seal ring mounting groove (15) on its outer wall, a second O-ring (9) being mounted in the seal ring mounting groove (15).

6. A rolling mill seal arrangement according to claim 5 characterised in that the inner wall surface of the eccentric disc (2) is fitted with a double lip seal (4).

7. A rolling mill seal according to claim 6, characterised in that, when assembled, the outer slide ring (1) is arranged opposite the inner slide ring (5), and the upper and lower ends of the double-lip seal (4) are in close contact with the outer slide ring (1) and the inner slide ring (5), respectively.