阅读说明：本技术 一种棒线材轧机轴承密封组件 (Rod and wire mill bearing seal assembly ) 是由 焦健 李春辉 冯银涛 徐耀晨 梁建科 于 2020-12-11 设计创作，主要内容包括：本发明公开了一种棒线材轧机轴承密封组件,包括设置在轴承侧面的静迷宫环和设置在轧辊轴外周上的动迷宫环；静迷宫环周向向后、且向外延伸设置有第一环板,第一环板的前侧面贴合固定在轴承座上；动迷宫环的外周面与环板的内周面间隙配合；动迷宫环的外周面后端径向向外延伸设置有第二环板,第二环板和第一环板之间设置有第一密封环；轧辊轴上还套设有水封环,水封环的前端面与第二环板的后端面及轴承座的后端面贴合密封设置；本发明通过水封环随轧辊高速运转的同时,将氧化渣与冷却水全部被甩开,有效的防止异物靠近动静迷宫配合处,避免异物进入轴承座内腔,起到良好密封效果。(The invention discloses a rod and wire mill bearing seal assembly, which comprises a static labyrinth ring arranged on the side surface of a bearing and a movable labyrinth ring arranged on the periphery of a roll shaft; the static labyrinth ring is provided with a first annular plate which extends backwards and outwards in the circumferential direction, and the front side surface of the first annular plate is attached and fixed on the bearing seat; the outer peripheral surface of the moving labyrinth ring is in clearance fit with the inner peripheral surface of the ring plate; a second annular plate is arranged at the rear end of the peripheral surface of the moving labyrinth ring in a radially outward extending manner, and a first sealing ring is arranged between the second annular plate and the first annular plate; a water seal ring is further sleeved on the roll shaft, and the front end face of the water seal ring is in fit sealing arrangement with the rear end face of the second annular plate and the rear end face of the bearing seat; according to the invention, the oxidation slag and the cooling water are completely thrown away while the water seal ring rotates at a high speed along with the roller, so that foreign matters are effectively prevented from being close to the matching part of the moving labyrinth and the static labyrinth, the foreign matters are prevented from entering the inner cavity of the bearing seat, and a good sealing effect is achieved.)

1. The rod and wire mill bearing seal assembly is characterized by comprising a static labyrinth ring (5) arranged on the side surface of a bearing (8) and a movable labyrinth ring (3) arranged on the periphery of a mill roll shaft (7), wherein the static labyrinth ring (5) and the movable labyrinth ring (3) are used for mutually matching to realize the seal of the side surface of the bearing (8);

the static labyrinth ring (5) is provided with a first ring plate (53) in a circumferential backward and outward extending manner, and the front side surface of the first ring plate (53) is attached and fixed on the bearing seat (9);

the outer peripheral surface of the movable labyrinth ring (3) is in clearance fit with the inner peripheral surface of the ring plate (53);

the rear end of the peripheral surface of the movable labyrinth ring (3) extends outwards in the radial direction to form a second ring plate (31), and a first sealing ring (2) is arranged between the second ring plate (31) and the first ring plate (53);

still overlap on the roll axle (7) and be equipped with water seal ring (1), the preceding terminal surface of water seal ring (1) with the rear end face of second crown plate (31) and the rear end face laminating of bearing frame (9) are sealed to be set up.

2. A rod and wire mill bearing seal assembly according to claim 1, wherein the outer peripheral surface of the front end of the moving labyrinth ring (3) is recessed radially inward to form a stepped annular space (32), and a second seal (4) is provided between the rear side surface of the bearing (8) and the stepped annular space.

3. The rod and wire mill bearing seal assembly according to claim 2, wherein the second seal gasket (4) has a recessed ring space (41) formed on a rear end surface thereof, and the moving labyrinth ring (3) has an annular rib formed on a front end thereof at a position corresponding to the recessed ring space (41).

4. A rod and wire mill bearing seal assembly according to claim 2 or 3, characterized in that the inner end of the first ring plate (53) extends rearwardly with a first ledge (51), the first ledge (51) being used for support and positioning of the first seal ring (2).

5. A rod and wire mill bearing seal assembly according to claim 4, characterized in that the height of the ledge (51) is greater than the thickness of the first seal ring (2).

6. The rod and wire mill bearing seal assembly according to claim 5, wherein the front end face of the second ring plate (31) is provided with a first accommodating space (33) and a second accommodating space (35) which are adjacent to each other, the first accommodating space (33) is used for accommodating the first protruding edge (51), and the second accommodating space is used for accommodating the first seal ring (2).

7. A rod and wire mill bearing seal assembly according to claim 6, characterized in that the first seal ring (2) has an inward recess (21) on its outer circumference, the outer edge of the second ring plate (31) is provided forward with a second ledge (34), the second ledge (34) has a protrusion to the inner side, the protrusion and the inward recess (21) are adapted to cooperate to achieve the sealing of the static labyrinth ring (5) and the dynamic labyrinth ring (3).

8. The rod and wire mill bearing seal assembly according to claim 6 or 7, wherein the first ring plate (53) is provided with a plurality of bolt through holes (52) at intervals.

9. A rod and wire mill bearing seal assembly according to claim 8, characterized in that the water seal ring (1) is made of a flexible material, which comprises a ring of flexible material that instead extends outwards in a trumpet shape and gradually decreases in thickness.

Technical Field

The invention belongs to the technical field of bearing sealing, and particularly relates to a rod and wire mill bearing sealing assembly.

Background

A rolling mill bearing is used for rolling industry, namely rolling of nonferrous metal, ferrous metal and non-metallic products. The bearing is used for the diameter position of the rolling roller system and the roller. The bearing outer ring is connected with the inner surface of the roller, and the inner ring is sleeved on a step shaft of the rolling mill. The small diameter part of the step shaft is sleeved on the surface of the inner ring of the bearing, and the circular side face of the joint of the large diameter part and the small diameter part is pressed against the side face of the bearing.

When a rolling mill bearing is installed, a single-pass framework seal is adopted at the joint of the circular ring-shaped side surface and the bearing side surface, but the single-pass framework seal protection capability is weak, cooling water and oxidation slag on a rolling line easily enter the bearing through the seal, so that oil pollutes the bearing and is abraded, lubrication, emulsification and deterioration are caused, grease is lost, the risk of burning loss of the rolling mill bearing exists, and the production rhythm and the steel yield are influenced.

Disclosure of Invention

The invention aims to provide a rod and wire mill bearing sealing assembly which effectively prevents foreign matters such as rolling line cooling water and oxidation slag from entering an inner cavity of a bearing and avoids bearing burning loss.

The invention adopts the following technical scheme: a rod and wire mill bearing seal assembly comprises a static labyrinth ring arranged on the side surface of a bearing and a movable labyrinth ring arranged on the periphery of a roll shaft, wherein the static labyrinth ring and the movable labyrinth ring are used for being matched with each other to realize the seal of the side surface of the bearing;

the static labyrinth ring is provided with a first annular plate which extends backwards and outwards in the circumferential direction, and the front side surface of the first annular plate is attached and fixed on the bearing seat;

the outer peripheral surface of the moving labyrinth ring is in clearance fit with the inner peripheral surface of the ring plate;

a second annular plate is arranged at the rear end of the peripheral surface of the moving labyrinth ring in a radially outward extending manner, and a first sealing ring is arranged between the second annular plate and the first annular plate;

and a water seal ring is further sleeved on the roll shaft, and the front end face of the water seal ring is in fit sealing arrangement with the rear end face of the second annular plate and the rear end face of the bearing seat.

Furthermore, the outer peripheral surface of the front end of the moving labyrinth ring is recessed inwards in the radial direction to form a step annular space, and a second sealing gasket is arranged between the rear side surface of the bearing and the step annular space.

Furthermore, a sunken ring space is formed in the rear end face of the second sealing gasket, and an annular convex edge is arranged at a position corresponding to the sunken ring space and arranged at the front end of the movable labyrinth ring.

Further, the inner end of the first ring plate extends backwards to form a first convex edge, and the first convex edge is used for supporting and positioning the first sealing ring.

Further, the height of the ledge is greater than the thickness of the first seal ring.

Further, adjacent first accommodation space and second accommodation space have been seted up on the preceding terminal surface of second crown plate, and first accommodation space is used for holding first protruding edge, and second accommodation space is used for holding first sealing ring.

Furthermore, the periphery of the first sealing ring is provided with an inward concave part, the outer edge of the second ring plate is provided with a second convex edge forward, the second convex edge is provided with a convex part towards the inner side, and the convex part and the inward concave part are used for mutually matching to realize the sealing of the static labyrinth ring and the dynamic labyrinth ring.

Further, the first ring plate is provided with a plurality of bolt through holes at intervals.

Furthermore, the water seal ring is made of flexible materials, and comprises a flexible material ring, wherein the flexible material ring is outwards extended in a horn shape, and the thickness of the flexible material ring is gradually reduced.

The invention has the beneficial effects that: the invention effectively prevents foreign matters from approaching the matching part of the moving labyrinth and the static labyrinth by throwing away all the oxidation slag and the cooling water while the water seal ring runs at high speed along with the roller, prevents the foreign matters from entering the inner cavity of the bearing seat, has good sealing effect, and is installed at the connecting part of the original moving labyrinth and the static labyrinth by taking the first sealing ring as a second defense line, so that the sealing effect is achieved by matching the first sealing ring and the static labyrinth.

Drawings

FIG. 1 is a schematic structural view of a bearing seal assembly of a rod and wire slag machine according to an embodiment of the invention;

FIG. 2 is an exploded view of a rod and wire slag machine bearing seal assembly according to an embodiment of the present invention;

FIG. 3 is a reference diagram of a state of use of a rod and wire slag machine bearing seal assembly according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a static labyrinth ring in the present embodiment;

FIG. 5 is a schematic structural diagram of a moving labyrinth ring in the present embodiment;

FIG. 6 is a schematic structural diagram of a second sealing member in the present embodiment;

fig. 7 is a schematic structural diagram of the first seal ring in this embodiment.

Wherein: 1. a water seal ring; 2. a first seal ring; 3. a moving labyrinth ring; 4. a second gasket; 5. a static labyrinth ring; 6. rolling; 7. a roll shaft; 8. a bearing; 9. a bearing seat;

21. an inwardly recessed portion;

31. a second ring plate; 32. a stepped annular space; 33. a first accommodating space; 34. a second convex edge; 35. a second accommodating space;

41. a recessed ring space;

51. a first convex edge; 52. a bolt through hole; 53. a first ring plate.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention discloses a rod and wire mill bearing seal assembly, which comprises a static labyrinth ring 5 arranged on the side surface of a bearing 8 and a movable labyrinth ring 3 arranged on the periphery of a roll shaft 7, wherein the static labyrinth ring 5 and the movable labyrinth ring 3 are used for mutually matching to realize the seal of the side surface of the bearing 8, as shown in figures 1 and 2; the static labyrinth ring 5 is provided with a first annular plate 53 which extends backwards and outwards in the circumferential direction, and the front side surface of the first annular plate 53 is attached and fixed on the bearing seat 9; the outer peripheral surface of the moving labyrinth ring 3 is in clearance fit with the inner peripheral surface of the ring plate 53; the rear end of the outer peripheral surface of the moving labyrinth ring 3 extends radially outwards to form a second ring plate 31, and a first sealing ring 2 is arranged between the second ring plate 31 and the first ring plate 53; the roll shaft 7 is also sleeved with a water seal ring 1, and the front end face of the water seal ring 1 is attached to the rear end face of the second annular plate 31 and the rear end face of the bearing seat 9 in a sealing manner.

The invention effectively prevents foreign matters from approaching the matching part of the moving labyrinth and the static labyrinth by throwing away all the oxidation slag and the cooling water while the water seal ring runs at high speed along with the roller, prevents the foreign matters from entering the inner cavity of the bearing seat, has good sealing effect, and is installed at the connecting part of the original moving labyrinth and the static labyrinth by taking the first sealing ring as a second defense line, so that the sealing effect is achieved by matching the first sealing ring and the static labyrinth.

In the embodiment, the first sealing ring 2 is formed by reforming the original moving labyrinth, a 400 annular step is machined at the part of the first sealing ring, which is in contact with the static labyrinth, by a machine tool, and 437 x 400 x 20 framework oil seals are additionally arranged at the original seam allowance of the static labyrinth to be matched with each other to achieve the sealing effect.

In the embodiment of the invention, as shown in fig. 5, the outer peripheral surface of the front end of the moving labyrinth ring 3 is recessed inwards in the radial direction to form a step annular space 32, and a second sealing gasket 4 is arranged between the rear side surface of the bearing 8 and the step annular space. By means of this second gasket 4, a third line of sealing protection of the entire assembly is formed.

As shown in fig. 6, a recessed ring space 41 is formed on the rear end surface of the second gasket 4, and an annular rib is provided at a position corresponding to the recessed ring space 41 at the front end of the moving labyrinth ring 3. When the roll shaft 7 rotates, the annular rib rotates in the recessed annular space 41, and the second seal 4 is typically a rubber gasket, thereby forming a dynamic seal.

Specifically, as shown in fig. 4, the inner end of the first ring plate 53 extends rearward with a first ledge 51, and the first ledge 51 is used for supporting and positioning the first seal ring 2. The height of the ledge 51 is greater than the thickness of the first seal ring 2. So that the first protruding edge 51 can extend into the first accommodating space 33 to limit the dynamic labyrinth ring and the static labyrinth ring.

The front end face of the second ring plate 31 is provided with a first accommodating space 33 and a second accommodating space 35 which are adjacent to each other, the first accommodating space 33 is used for accommodating the first convex edge 51, and the second accommodating space is used for accommodating the first sealing ring 2. The second receiving space 35 is in clearance fit with the first sealing ring 2, and the first receiving space 33 is in clearance fit with the first ledge 51.

As shown in fig. 7, the first sealing ring 2 has an inward recessed portion 21 on the outer periphery thereof, the outer edge of the second ring plate 31 is provided with a second protruding edge 34 forward, the second protruding edge 34 has a protruding portion on the inner side, and the protruding portion and the inward recessed portion 21 are configured to cooperate with each other to achieve sealing of the static labyrinth ring 5 and the dynamic labyrinth ring 3.

Specifically, a plurality of bolt through holes 52 are provided at intervals on the first ring plate 53 to fix the static labyrinth ring 5 to the bearing housing 9.

In this embodiment, the water seal ring 1 is made of a flexible material, and includes a ring made of a flexible material, the flexible material is turned to an outer horn-shaped extension, and the thickness of the flexible material is gradually reduced. More specifically, the water seal ring 1 is designed as an annular seal with a lengthened lip, and the seal lip is long, has a lip angle of 60 degrees downward from the roller, and is called as an umbrella-shaped seal. The umbrella-shaped seal is fixed on the outer side of the moving labyrinth for a circle, oxidation slag and cooling water are all thrown away when the roller runs at a high speed, foreign matters are effectively prevented from being close to the matching part of the moving labyrinth and the moving labyrinth, and then enter the inner cavity of the bearing seat, and the sealing effect is achieved.

As shown in fig. 3, in the state in which the present embodiment is applied, the roll shaft 7 of the roll 6 passes through the bearing 8, and the bearing 8 is fixed to the chock 9. The seal assembly of this embodiment is mounted at the outer surface of the chock 9, the chock 9 being located at the front end and the roll 6 being oriented at the rear end.

The invention relates to a novel rod and wire rolling mill bearing seal combined structure, which aims to solve the current situation that the bearing of the rolling mill is frequently burnt at present and reduce the risk of influencing the production rhythm and yield.

The invention has the advantages that the inherent sealing form of the rolling mill bearing is changed, three seals are used at the position of the moving labyrinth ring and the static labyrinth ring of the rolling mill, so that foreign matters such as cooling water, oxidation slag and the like are effectively prevented from entering the inner cavity of the bearing when the rolling mill runs on line, the cleanliness of the bearing lubrication is ensured, the grease loss is prevented, and the risk of burning loss of the rolling mill bearing is reduced.