Mechanical sealing vertical roll system

Abstract

The utility model provides a mechanical seal vertical roll system, the vertical roll system comprises a roll, a universal spindle, a universal shaft sleeve and a bearing, the universal spindle, the universal shaft sleeve and the bearing are sequentially arranged on the outer side of the roll, a sealing assembly is arranged between the universal shaft sleeve and the bearing, the sealing assembly comprises a sealing cover and a clamping ring, the sealing cover is located between a universal shaft sleeve and a bearing of the vertical rolling mill, and the universal shaft sleeve, the sealing cover and the outer wall of the bearing form a sealing structure wrapping the outer side of an inner sleeve of the bearing. The clamping ring is arranged on the outer side of the sealing cover, and the inner wall of the clamping ring abuts against the outer wall of the sealing cover. The utility model has the beneficial effects of prolonging the service life of the bearing, reducing the roller replacement frequency of a rolling mill and increasing the yield of a production line by prolonging the length of the transmission end of the roller and arranging the sealing assembly to prevent roller cooling water and scale from invading the bearing.

Description

Technical Field

[0001] This utility model belongs to the field of sealing structures, and in particular relates to vertical roller systems with mechanical seals. Background Technology

[0002] Hot-rolled strip steel is widely used in industries such as home appliances, automobiles, shipbuilding, and hardware products. It can also serve as a raw material for the production of cold-rolled, welded pipes, and cold-formed steel sections. With the rapid development of my country's economy, especially since the beginning of the 21st century, the demand and output of hot-rolled strip steel products have been continuously increasing. Therefore, reducing the frequency of roll changes and extending the service life of vulnerable parts have become key focuses for steel mills seeking to upgrade and transform their production lines.

[0003] Vertical rolling mills are located in the rolling area of ​​strip steel production lines. They are primarily used to control the width and head / tail shape of the strip steel, while simultaneously transforming the edge structure of the billet from a cast state to a rolled state, preventing edge cracking during horizontal rolling and thus altering the strip width. The roll system is a key component of the vertical rolling mill, consisting of rolls, bearings, and bearing housings. During production, the rolling force of the billet acts entirely on the bearings of the roll system assembly. Therefore, the roll system bearings are crucial to the normal operation of the vertical rolling mill. Currently, vertical rolling mill roll system bearings use dry oil lubrication, with back-to-back oil seals at both ends. This prevents leakage of the lubricating oil, as well as the intrusion of external iron oxide scale and roll cooling water. Furthermore, the oil seals offer some compensation for wear at the roll sealing points.

[0004] However, existing vertical roll systems suffer from the problem of bearing damage due to aging oil seals, untimely oil seal replacement, external iron oxide scale, and roll cooling water intrusion. This affects the bearing's service life, increases the frequency of roll replacements on the production line, and impacts the production rhythm and output. Utility Model Content

[0005] In view of this, the present invention aims to propose a mechanically sealed vertical roller system in order to solve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A mechanically sealed vertical roll system, comprising a roll, and a universal joint, a universal joint sleeve, and a bearing sequentially disposed on the outer side of the roll, wherein a sealing assembly is provided between the universal joint sleeve and the bearing, the sealing assembly comprising:

[0008] A sealing cover is located between the universal joint sleeve and the bearing of the vertical rolling mill. The universal joint sleeve, the sealing cover, and the outer wall of the bearing form a sealing structure that wraps around the outer side of the inner sleeve of the bearing.

[0009] A clamping ring is provided on the outside of the sealing cover, and the inner wall of the clamping ring is pressed against the outer wall of the sealing cover.

[0010] Furthermore, the sealing cover is composed of two arc-shaped plates spliced ​​together. A groove is opened on the outer wall of the arc-shaped plates near the splicing part. Two adjacent grooves on the two arc-shaped plates form a sealing groove for placing the sealing plate, and the sealing plate is fixed in the sealing groove.

[0011] Furthermore, a sealing gasket is provided between the sealing plate and the sealing groove, and the sealing gasket is interference-fitted with the sealing groove.

[0012] Furthermore, multiple connecting slots are evenly distributed at both ends of the arc-shaped plate. The multiple connecting slots located at the same end are equidistantly distributed, and the distance between them is equal to the length of the connecting slot. A connecting block is formed between two adjacent connecting slots. The multiple connecting blocks on the two arc-shaped plates are staggered, and the connecting block on one arc-shaped plate is located in the connecting slot of the other arc-shaped plate.

[0013] Furthermore, an arc-shaped groove is formed on the outer wall of the sealing plate, and an arc-shaped block corresponding to the arc-shaped groove is fixed on the inner wall of the clamping ring, with the arc-shaped block pressing against the inner wall of the arc-shaped groove.

[0014] Furthermore, a reinforcing rib is fixed on the outer wall of the clamping ring, and the reinforcing rib is correspondingly arranged with the arc-shaped block.

[0015] Furthermore, the bearing is a double-row tapered roller bearing, with oil seals at both ends of the bearing, and the sealing cover is wrapped around the outside of the oil seals.

[0016] Furthermore, the clamping ring is composed of two semicircular plates, one end of which is fixed with a hinge block and the other end with a fixing block, and the two semicircular plates are hinged to each other through the hinge block.

[0017] Furthermore, each of the two fixing blocks has a mounting hole, and a mounting bolt is installed in the mounting hole. The mounting bolt passes through the two fixing blocks and is threadedly connected to the mounting nut. The nut of the mounting bolt is tightened against the fixing block, and the mounting nut is tightened against the other fixing block.

[0018] Furthermore, a retaining block is fixed on the fixing block near the mounting nut, and the retaining block has a retaining groove corresponding to the mounting nut, with the mounting nut located in the retaining groove.

[0019] Compared with the prior art, the mechanically sealed vertical roller system of this utility model has the following advantages:

[0020] By extending the length of the roll drive end and installing sealing components, the bearings are prevented from being invaded by roll cooling water and iron oxide scale, thus extending the bearing life, reducing the frequency of roll changes in the rolling mill, and increasing production line output. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the vertical roller system according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the sealing assembly structure according to an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the sealing cover structure according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the clamping ring structure described in an embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the clamping ring portion structure according to an embodiment of the present utility model;

[0027] Figure 6 This is a schematic diagram of the sealing plate structure according to an embodiment of the present utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Universal joint; 2. Universal joint sleeve; 3. Sealing assembly; 31. Sealing cover; 311. Arc plate; 312. Countersunk groove; 313. Connecting groove; 32. Clamping ring; 321. Arc block; 322. Reinforcing rib; 323. Fixing block; 33. Sealing plate; 331. Arc groove; 4. Oil seal; 5. Bearing; 6. Roll. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] A mechanically sealed vertical roll system includes a roll 6, and a universal joint 1, a universal joint sleeve 2, and a bearing 5 sequentially disposed outside the roll 6. A sealing assembly 3 is provided between the universal joint sleeve 2 and the bearing 5. The sealing assembly 3 includes:

[0035] The sealing cover 31 is located between the universal joint sleeve 2 and the bearing 5 of the vertical roll mill. The universal joint sleeve 2, the sealing cover 31, and the outer wall of the bearing 5 form a sealing structure that wraps around the outer side of the inner sleeve of the bearing 5.

[0036] A clamping ring 32 is disposed on the outside of the sealing cover 31, and the inner wall of the clamping ring 32 is pressed against the outer wall of the sealing cover 31.

[0037] The sealing cover 31 is composed of two arc-shaped plates 311 spliced ​​together. The outer wall of the arc-shaped plates 311 near the splicing part has a groove 312. The two adjacent grooves 312 on the two arc-shaped plates 311 form a sealing groove for placing the sealing plate 33. The sealing plate 33 is fixed in the sealing groove.

[0038] A sealing gasket is provided between the sealing plate 33 and the sealing groove, and the sealing gasket is interference-fitted with the sealing groove.

[0039] Multiple connecting slots 313 are evenly distributed at both ends of the arc plate 311. The multiple connecting slots 313 located at the same end are equidistantly distributed, and the distance between them is equal to the length of the connecting slot 313. A connecting block is formed between two adjacent connecting slots 313. The multiple connecting blocks on the two arc plates 311 are staggered. The connecting block on one arc plate 311 is located in the connecting slot 313 on the other arc plate 311.

[0040] An arc-shaped groove 331 is formed on the outer wall of the sealing plate 33, and an arc-shaped block 321 corresponding to the arc-shaped groove 331 is fixed on the inner wall of the clamping ring 32. The arc-shaped block 321 is pressed against the inner wall of the arc-shaped groove 331.

[0041] A reinforcing rib 322 is fixed on the outer wall of the clamping ring 32, and the reinforcing rib 322 is correspondingly arranged with the arc-shaped block 321.

[0042] The bearing 5 is a double-row tapered roller bearing 5, and oil seals 4 are provided at both ends of the bearing 5. The sealing cover 31 is wrapped around the outside of the oil seals 4.

[0043] The clamping ring 32 is composed of two semicircular plates. One end of each semicircular plate is fixed with a hinge block, and the other end is fixed with a fixing block 323. The two semicircular plates are hinged to each other through the hinge block.

[0044] Both fixing blocks 323 have mounting holes, and mounting bolts are installed in the mounting holes. The mounting bolts pass through the two fixing blocks 323 and are threadedly connected to the mounting nuts. The nuts of the mounting bolts are tightened against the fixing blocks 323, and the mounting nuts are tightened against the other fixing block 323.

[0045] A retaining block is fixed on the fixing block 323 near the mounting nut. The retaining block has a retaining groove corresponding to the mounting nut, and the mounting nut is located in the retaining groove.

[0046] This invention, based on the existing vertical rolling mill roll system, extends the length of the drive end of the roll 6, adds a sealing component 3, and machines grooves into the cross-section of the original universal joint sleeve 2. The sealing component 3 and the grooves on the end face of the universal joint sleeve 2 form a labyrinth seal structure. During the rotation of the roll 6 driven by the universal joint shaft 1, water is sprayed externally to cool the roll 6. As the roll 6 rotates, the sprayed water splashes onto the drive end of the roll 6. During the rolling process, the formation of iron oxide scale is inevitable. Due to gravity, the iron oxide scale will fall onto the drive end of the roll 6.

[0047] At this time, the labyrinth seal structure will prevent the cooling water and iron oxide scale of the roll 6 from entering the bearing 5, thus extending the service life of the bearing 5, reducing the frequency of roll changing in the rolling mill, and increasing the output of the production line.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanically sealed vertical roller system, characterized in that: The vertical roll system includes a roll (6), and a universal joint (1), a universal joint sleeve (2), and a bearing (5) sequentially disposed on the outside of the roll (6). A sealing assembly (3) is provided between the universal joint sleeve (2) and the bearing (5). The sealing assembly (3) includes: The sealing cover (31) is located between the universal sleeve (2) and the bearing (5) of the vertical roll mill. The universal sleeve (2), the sealing cover (31), and the outer wall of the bearing (5) form a sealing structure that wraps around the outer side of the inner sleeve of the bearing (5). A clamping ring (32) is provided on the outside of the sealing cover (31), and the inner wall of the clamping ring (32) is pressed against the outer wall of the sealing cover (31).

2. The vertical roller system with mechanical sealing according to claim 1, characterized in that: The sealing cover (31) is composed of two arc-shaped plates (311) spliced ​​together. The outer wall of the arc-shaped plate (311) near the splicing part has a groove (312). The two adjacent grooves (312) on the two arc-shaped plates (311) form a sealing groove for placing the sealing plate (33). The sealing plate (33) is fixed in the sealing groove.

3. The vertical roller system with mechanical sealing according to claim 2, characterized in that: A sealing gasket is provided between the sealing plate (33) and the sealing groove, and the sealing gasket is interference-fitted with the sealing groove.

4. The vertical roller system with mechanical sealing according to claim 2, characterized in that: The two ends of the arc plate (311) are evenly provided with multiple connecting grooves (313). The multiple connecting grooves (313) located at the same end are equidistantly distributed and the distance is equal to the length of the connecting groove (313). A connecting block is formed between two adjacent connecting grooves (313). The multiple connecting blocks on the two arc plates (311) are staggered. The connecting block on one arc plate (311) is located in the connecting groove (313) on the other arc plate (311).

5. The vertical roller system with mechanical sealing according to claim 2, characterized in that: The outer wall of the sealing plate (33) has an arc groove (331), and the inner wall of the clamping ring (32) is fixed with an arc block (321) corresponding to the arc groove (331), and the arc block (321) presses against the inner wall of the arc groove (331).

6. The vertical roller system with mechanical sealing according to claim 5, characterized in that: The outer wall of the clamping ring (32) is fixed with a reinforcing rib (322), and the reinforcing rib (322) is correspondingly arranged with the arc-shaped block (321).

7. The vertical roller system with mechanical sealing according to claim 1, characterized in that: The bearing (5) is a double-row tapered roller bearing (5), and oil seals (4) are provided at both ends of the bearing (5). The sealing cover (31) is wrapped around the outside of the oil seal (4).

8. The vertical roller system with mechanical sealing according to claim 1, characterized in that: The clamping ring (32) is composed of two semicircular plates. One end of the semicircular plate is fixed with a hinge block, and the other end is fixed with a fixing block (323). The two semicircular plates are hinged to each other through the hinge block.

9. The vertical roller system with mechanical sealing according to claim 8, characterized in that: Both fixing blocks (323) have mounting holes, and mounting bolts are installed in the mounting holes. The mounting bolts pass through the two fixing blocks (323) and are threadedly connected to the mounting nuts. The nuts of the mounting bolts are tightened against the fixing blocks (323), and the mounting nuts are tightened against the other fixing block (323).

10. The vertical roller system with mechanical sealing according to claim 9, characterized in that: A locking block is fixed on the fixing block (323) near the mounting nut, and the locking block has a locking groove corresponding to the mounting nut, and the mounting nut is located in the locking groove.

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