CN209959883U - Finishing machine auxiliary roller seal structure - Google Patents

Abstract

The utility model discloses a finishing machine auxiliary roller seal structure belongs to machining technical field. The utility model discloses a sealing structure, including big labyrinth ring and little labyrinth ring, little labyrinth ring installs in epaxial, big labyrinth ring installs on the roll body, big labyrinth ring with little labyrinth ring sets up relatively and forms the labyrinth passageway, the big labyrinth ring outside still is equipped with the pressure sheet along roll body circumference. The utility model discloses pressure sheet on the big labyrinth ring of well rotates along with the roll body is high-speed, constantly extrudees the air and forms pressure difference and produce the air current, outside steam and dust separation, avoids liquid to get into the bearing wearing and tearing that bearing dilution lubricating oil leads to, has prolonged the life of bearing, has good dynamic seal and prevents the leak-proof ability.

Description

Finishing machine auxiliary roller seal structure

Technical Field

The utility model belongs to the technical field of machining, more specifically say, relate to a burnishing machine auxiliary roller seal structure.

Background

The finisher is important process equipment of a continuous galvanizing line, and mainly has the functions of improving the strip shape, improving the mechanical property of the strip by controlling the elongation rate and eliminating a yield platform on the premise of ensuring the surface finish and flatness of the strip; the finishing machine is used as the using equipment for the galvanizing post-treatment, and the running stability of the finishing machine determines the quality of the whole galvanizing product. However, in actual production operation, it is found that impurities such as water vapor and dust enter between the rotating shaft and the auxiliary roller during operation of the finishing machine, the sealing performance of the auxiliary roller is poor, the abrasion of the rotating shaft is aggravated, and the processing quality of a workpiece is seriously affected.

Aiming at the problem, the conventional auxiliary roller of the finishing machine is generally in dynamic seal by adopting a framework oil seal (as shown in figure 1), and finishing liquid still enters the inside of a bearing in the working process, so that lubricating oil of the bearing is diluted, and the bearing is abraded and damaged. As in patent application No.: 2010205309381, filing date: the invention and creation name is as follows on 9, 16 days 2010: the application discloses a novel sealing structure of a bearing box of a steering roller of a finishing machine, which comprises a dustproof ring, an end cover, a gland, a bearing seat and other parts; adopt the structural style that the two lip oil seals of endocyst skeleton replace current labyrinth seal and outside v shape dust ring combination, can effective control level and smooth liquid soak and dilute glycerine in the bearing box of turning roll, avoid the emergence of glycerine excessive phenomenon, can also effectively prevent the invasion of pollutants such as air simultaneously, reduce the risk of wearing and tearing erosion, but this scheme still is worth further improvement to improve the dynamic seal nature of axis of rotation and auxiliary roll, thereby improve the life of axle.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model provides a burnishing machine auxiliary roller seal structure, the pressure sheet on the big labyrinth ring rotates along with the roll body is high-speed, constantly extrudees the air and forms pressure difference and produce the air current, blocks in steam gets into the labyrinth passageway, has good dynamic seal and prevents leaking the ability.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a finishing machine auxiliary roller seal structure, including big labyrinth ring and little labyrinth ring, little labyrinth ring installs in epaxial, big labyrinth ring installs on the roll body, big labyrinth ring with little labyrinth ring sets up relatively and forms the labyrinth passageway, the big labyrinth ring outside still is equipped with the pressure sheet along roll body circumference.

As a further improvement, the labyrinth passage between the large labyrinth ring and the small labyrinth ring is less than 1mm in width, and a V-shaped sealing ring is arranged in the labyrinth passage.

As a further improvement, the pressure plates are at least two groups, and the included angle between the outer side wall of each group of pressure plates and the outer side wall of the large labyrinth ring is an acute angle.

As a further improvement, the included angle formed between the pressure plate and the outer side wall of the large labyrinth ring is 30-60 degrees.

As a further improvement of the utility model, the pressure sheet is of a triangular structure or a fan blade-shaped structure.

As a further improvement of the utility model, the large labyrinth ring is fixed on the roller body through screws.

As a further improvement of the present invention, the small labyrinth ring is mounted on the shaft through a lock nut and is clamped and fixed by a lock washer.

As a further improvement of the utility model, one side of the big labyrinth ring close to the roller body is provided with an annular groove, and an O-shaped sealing ring is arranged in the annular groove.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses a burnishing machine auxiliary roller seal structure, the pressure plate on the big labyrinth ring rotates along with the roll body is high-speed, and the pressure plate to the axle slope can constantly extrude the air and form the pressure difference to produce the air current, block in steam gets into the labyrinth passageway, have good dynamic seal and prevent leaking the ability.

(2) The utility model discloses a burnishing machine auxiliary roller seal structure installs V type sealing washer in labyrinth passageway, and the elastic seal lip of V type sealing washer supports and leans on the inner wall of big labyrinth ring to seal the labyrinth passageway, with steam and dust separation outside, avoid liquid to get into the bearing wearing and tearing that the bearing dilution lubricating oil leads to, prolonged the life of bearing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of an auxiliary roller of a finisher with a framework oil seal;

fig. 2 is a schematic structural view of a sealing structure of an auxiliary roller of a finishing machine of the present invention;

FIG. 3 is a schematic structural view of the sealing structure of the auxiliary roller with triangular pressure plates of the present invention;

fig. 4 is a schematic structural view of the auxiliary roller sealing structure with fan-shaped pressure plates of the present invention.

The reference numerals in the schematic drawings illustrate: 1. a shaft; 2. locking the nut; 3. a stop washer; 4. a V-shaped sealing ring; 5. a small labyrinth ring; 6. a large labyrinth ring; 7. a screw; 8. an O-shaped sealing ring; 9. a pressure sheet; 10. a bearing; 11. a bearing housing; 12. framework oil seal; 13. and a roller body.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Example 1

Referring to fig. 1, the conventional auxiliary roller of the finisher generally adopts a framework oil seal 12 for dynamic sealing, the framework oil seal 12 has high short-term performance cost ratio, but the service life of the auxiliary roller is short and the leakage rate is high in long-term operation, and under the working condition of continuous operation, finishing liquid still enters the inside of a bearing to dilute bearing lubricating oil, so that the bearing is abraded and damaged.

With reference to fig. 2 and 3, the sealing structure for the auxiliary roller of the finishing machine of the present embodiment includes a large labyrinth ring 6 and a small labyrinth ring 5, the small labyrinth ring 5 is installed on the shaft 1, the large labyrinth ring 6 is installed on the roller body 13, specifically, the large labyrinth ring 6 is fixed on the roller body 13 by a screw 7 in the present embodiment, and the small labyrinth ring 5 is installed on the shaft 1 by a lock nut 2 and is clamped and fixed by a lock washer 3.

Install bearing housing 11 on the roll body 13 in this embodiment, axle 1 and roll body 13 pass through bearing 10 to be connected, roll body 13 rotates around axle 1 in the finishing machine auxiliary roller working process, also relative rotation between the little labyrinth ring 5 that sets up on the big labyrinth ring 6 that sets up on roll body 13 and the axle 1, form between the labyrinth ring and move seal structure, concretely, big labyrinth ring 6 sets up with little labyrinth ring 5 relatively and forms the labyrinth passageway, big labyrinth ring 6 outside still is equipped with pressure sheet 9 along roll body 13 circumference, pressure sheet 9 is two sets of at least, respectively set up a set of pressure sheet 9 along roll body 13 radial direction in this embodiment, every pressure sheet 9 of group inclines to the direction of axle 1 and sets up, the contained angle that forms between the lateral wall of pressure sheet 9 and big labyrinth ring 6 is the acute angle, preferably, this contained angle is 30 ~ 60.

It is worth to be noted that, in order to improve the dynamic sealing effect and prevent the frictional wear between the labyrinth rings, a certain gap is kept between the large labyrinth ring 6 and the small labyrinth ring 5, the width of the gap is smaller than 1mm, a series of cut-off gaps formed in the labyrinth passage and the expansion cavity generate the throttling effect, so that the sealing purpose is achieved, the labyrinth seal adopts non-contact seal, no wear exists between parts, and the service cycle is longer. However, in the actual working process of the auxiliary roller of the finishing machine, the labyrinth seal is only used for blocking external water vapor and dust, and the effect is still not ideal.

In the embodiment, the pressure sheet 9 is arranged on the outer side of the large labyrinth ring 6, and the high-speed rotation characteristic of the roller body 13 is fully utilized, so that the pressure sheet 9 on the large labyrinth ring 6 rotates at a high speed along with the roller body 13, the pressure sheet 9 is of a triangular structure in the embodiment, centrifugal force is generated by the pressure sheet 9 under the guiding action when the pressure sheet 9 rotates, the pressure sheet 9 inclined towards the shaft 1 can continuously extrude air to form pressure difference, air flow is generated to form wind, and water vapor is further prevented from entering a labyrinth channel; even if vapor adheres to the pressure plate 9, the vapor can be thrown out under the action of centrifugal force, the pressure plate 9 is obliquely arranged along the direction of the shaft 1 to form a baffle, dust can be effectively prevented from entering, interference of a sealed medium is reduced, and the dynamic sealing leakage-preventing capacity is good.

Example 2

The structure of the sealing structure for the auxiliary roller of the finisher is basically the same as that of embodiment 1, and further, in this embodiment, a V-shaped sealing ring 4 is installed in the labyrinth passage. Specifically, the V-shaped seal ring 4 is made of an elastic material, such as rubber, the V-shaped seal ring 4 is fixed on the small labyrinth ring 5 by the internal tension of the seal body, and the elastic seal lip of the V-shaped seal ring 4 abuts against the inner wall of the large labyrinth ring 6, so that the labyrinth passage is closed, and water vapor and dust are blocked outside. The combined sealing form ensures that the sealing is more reliable, avoids bearing abrasion caused by dilution of lubricating oil when liquid enters the bearing, and prolongs the service life of the bearing.

Example 3

The structure of the sealing structure for the auxiliary roller of the skin-pass mill in this embodiment is basically the same as that in embodiment 2, except that: in this embodiment, the pressure plate 9 is a fan blade structure, and further, in this embodiment, an annular groove is formed in one side of the large labyrinth ring 6 close to the roller body 13, and an O-shaped sealing ring 8 is arranged in the annular groove.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a burnishing machine auxiliary roller seal structure which characterized in that: including big labyrinth ring (6) and little labyrinth ring (5), install on axle (1) little labyrinth ring (5), install on roll body (13) big labyrinth ring (6), big labyrinth ring (6) with little labyrinth ring (5) set up relatively and form the labyrinth passageway, roll body (13) circumference is still followed in big labyrinth ring (6) outside and is equipped with pressure gauge (9).

2. The sealing structure of the auxiliary roller of the finishing machine according to claim 1, wherein: the labyrinth passage width between the large labyrinth ring (6) and the small labyrinth ring (5) is less than 1mm, and a V-shaped sealing ring (4) is further arranged in the labyrinth passage.

3. The sealing structure of the auxiliary roller of the finishing machine according to claim 1, wherein: the number of the pressure sheets (9) is at least two, and an included angle formed between each group of the pressure sheets (9) and the outer side wall of the large labyrinth ring (6) is an acute angle.

4. The sealing structure of the auxiliary roller of the finishing machine according to claim 3, wherein: the included angle formed between the pressure sheet (9) and the outer side wall of the large labyrinth ring (6) is 30-60 degrees.

5. A finisher auxiliary roller seal structure according to any one of claims 1 to 4, characterized in that: the pressure sheet (9) is of a triangular structure or a fan blade-shaped structure.

6. The sealing structure of the auxiliary roller of the finishing machine according to claim 1, wherein: the large labyrinth ring (6) is fixed on the roller body (13) through a screw (7).

7. The sealing structure of the auxiliary roller of the finishing machine according to claim 1, wherein: the small labyrinth ring (5) is arranged on the shaft (1) through a locking nut (2) and is clamped and fixed through a stop washer (3).

8. The sealing structure of the auxiliary roller of the finishing machine according to claim 1, wherein: an annular groove is formed in one side, close to the roller body (13), of the large labyrinth ring (6), and an O-shaped sealing ring (8) is arranged in the annular groove.

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