CN219482888U

CN219482888U - Ball mill end cover bushing sealing structure

Info

Publication number: CN219482888U
Application number: CN202320777866.8U
Authority: CN
Inventors: 尹瑜; 王业鸿
Original assignee: Wuxi Xinyan Powder Machinery Co ltd
Current assignee: Wuxi Xinyan Powder Machinery Co ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-08-08
Anticipated expiration: 2033-04-11

Abstract

The utility model relates to a sealing structure of an end cover bushing of a ball mill, which comprises an end cover and a bushing, wherein the end cover comprises a straight barrel part and a conical barrel part, the bushing comprises an end plate and a barrel, the barrel of the bushing is nested in the straight barrel part of the end cover, and a gap is reserved between the barrel and the straight barrel part; the outer wall of one end of the cylinder body, which is far away from the end plate, is provided with a convex ring, the convex ring is attached to the inner wall of the straight cylinder part, one side of the convex ring, which is close to the end plate, is provided with an annular sealing piece, the sealing piece has elasticity, and the sealing piece is attached to the inner wall of the straight cylinder part and the outer wall of the cylinder body; the outer wall of barrel is provided with electronic subassembly that compresses tightly, and electronic subassembly that compresses tightly is used for compressing tightly the sealing member at the bulge loop surface, and electronic subassembly that compresses tightly includes electric jar and extrusion ring, and extrusion ring slip cap is established at the barrel outer wall and is laminated with the inner wall of straight section of thick bamboo portion, and the extrusion ring setting is deviating from one side of bulge loop at the sealing member, and the electric jar setting is at the outer wall of barrel. The utility model can solve the problems of short service life and frequent replacement of sealing elements between end cover bushings of the ball mill in the prior art.

Description

Ball mill end cover bushing sealing structure

Technical Field

The utility model relates to the technical field of ball mills, in particular to a sealing structure of an end cover bushing of a ball mill.

Background

The ball mill is traditional crushing and grinding equipment, and the assembly of ball mill business turn over material bush and front and back end cover adopts cylindrical structure, and the bush transversely inlays in the end cover is inside, usually through bolt fastening. Because structural design problem, the bush can't seal the gomphosis end cover completely, exists certain gap between the two, and thick liquid or slags can enter into the assembly cavity of business turn over material bush and front and back end cover body through inboard assembly gap in the work, lead to the fact wearing and tearing to business turn over material bush and end cover body, shorten the life of bush, reduce the intensity of end cover body, seriously still can produce the condition such as crackle, hole to cause the end cover body to grind to leak, thick liquid enters into the tile face of big tile, cause the risk of burn-in accident. Meanwhile, the slurry overflows along the outer end assembly surface, slurry leakage occurs, and a series of problems are caused by the leaked slurry. Therefore, a sealing structure is arranged between the lining of the ball mill feeding and discharging end cover and the end cover.

In the prior art, sealing structures between end covers and bushings of ball mills are formed by sealing matched end parts of the end covers and the bushings by adopting sealing elements such as O-shaped rings, rubber tubes or packing, and the sealing elements are worn out under the flushing of ore pulp and steel balls in the running process of the ball mill, so that the sealing elements are invalid and further the bushings and hollow shafts of the end covers are worn out, and therefore, the sealing elements are required to be replaced frequently, and the sealing structures are large in workload and inconvenient to operate.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects in the prior art, the utility model provides a sealing structure of an end cover bushing of a ball mill, which aims to solve the problems of short service life and frequent replacement of sealing elements between the end cover bushings of the ball mill in the prior art.

(II) technical scheme

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the end cover bushing sealing structure of the ball mill comprises an end cover and a bushing, wherein the end cover comprises a straight barrel part and a conical barrel part, the bushing comprises an end plate and a barrel, the barrel of the bushing is nested in the straight barrel part of the end cover, and a gap is reserved between the barrel and the straight barrel part; the outer wall of one end of the cylinder body, which is far away from the end plate, is provided with a convex ring, the convex ring is attached to the inner wall of the straight cylinder part, one side of the convex ring, which is close to the end plate, is provided with an annular sealing piece, the sealing piece has elasticity, and the sealing piece is attached to the inner wall of the straight cylinder part and the outer wall of the cylinder body; the outer wall of barrel is provided with electronic compression subassembly, electronic compression subassembly is used for compressing tightly the sealing member at bulge loop surface.

Further, electronic subassembly that compresses tightly includes electric jar and extrusion ring, extrusion ring slip cap establishes at the barrel outer wall and with the laminating of the inner wall of straight barrel portion, the extrusion ring sets up in the one side that the sealing member deviates from the bulge loop, the electric jar sets up the outer wall at the barrel, the push rod of electric jar can promote the extrusion ring to the direction that is close to the bulge loop.

Further, at least two electric cylinders are arranged, and a plurality of electric cylinders are uniformly distributed around the outer wall of the cylinder body at intervals.

Further, a push plate is arranged at the end part of the push rod of the electric cylinder, and the area of the push plate is larger than the cross-sectional area of the push rod of the electric cylinder.

Further, the access hole has been seted up to the outer wall of straight section of thick bamboo portion, the quantity and the position one-to-one of electric jar of access hole, the access hole is embedded to be equipped with the sealing plate, sealing plate and straight section of thick bamboo portion pass through bolt fixed connection.

Further, the end face of the straight cylinder part far away from the conical cylinder part is provided with a positioning rod, the surface of the end plate close to the cylinder body is provided with a positioning hole matched with the positioning rod, and the positioning rod is inserted into the positioning hole.

(III) beneficial technical effects

In summary, the utility model has the following beneficial technical effects:

1. because the outer wall of one end of the cylinder body far away from the end plate is provided with the convex ring, the convex ring is attached to the inner wall of the straight cylinder part, one side of the convex ring, which is close to the end plate, is provided with the annular sealing element, the sealing element has elasticity, and the sealing element is attached to the inner wall of the straight cylinder part and the outer wall of the cylinder body; in addition, because the outer wall of the cylinder body is provided with the electric pressing component, when the sealing element is worn after long-term use, the sealing element can be pressed towards the direction close to the convex ring through the electric pressing component, and at the moment, the sealing element is elastic, so that the sealing element can be attached to the cylinder body and the straight cylinder part again, the sealing effect is restored again, and the reliability and the effectiveness of the sealing structure are ensured; in summary, for the utility model, when the sealing element is worn, the electric pressing component is regulated to restore the sealing effect of the sealing element, and the sealing element is not required to be directly replaced, so that the sealing structure of the end cover bushing of the ball mill provided by the utility model has the advantages of long service life, no need of frequent replacement and good sealing effect.

2. Because the electric compression assembly comprises the electric cylinder and the extrusion ring, the extrusion ring is sleeved on the outer wall of the cylinder body in a sliding manner and is attached to the inner wall of the straight cylinder part, the extrusion ring is arranged on one side of the sealing element, which is away from the convex ring, the electric cylinder is arranged on the outer wall of the cylinder body, and the push rod of the electric cylinder can push the extrusion ring to the direction, which is close to the convex ring; through the arrangement, when the push rod of the electric cylinder extends, the push rod can push the extrusion ring to extrude the sealing element, so that the sealing element is attached to the straight barrel part of the barrel body more tightly, and the sealing effectiveness is ensured.

3. Because the end part of the push rod of the electric cylinder is provided with the push plate, the area of the push plate is larger than the cross-sectional area of the push rod of the electric cylinder; through the arrangement, the stress area of the push plate can be increased, the pressure intensity of the extrusion ring can be reduced, and the effect of protecting the extrusion ring is achieved.

4. Because the outer wall of the straight cylinder part is provided with the overhaul holes, the number of the overhaul holes is the same as that of the electric cylinders and the positions of the overhaul holes are in one-to-one correspondence, and the overhaul holes are embedded with sealing plates which are fixedly connected with the straight cylinder part through bolts; through the arrangement, when the electric cylinder breaks down, a worker can directly repair or replace the electric cylinder at the access hole without detaching and moving out the bushing from the end cover, and the operation is simple and convenient.

5. Because the end face of the straight cylinder part, which is far away from the conical cylinder part, is provided with a positioning rod, the surface of the end plate, which is close to the cylinder, is provided with a positioning hole matched with the positioning rod, and the positioning rod is inserted into the positioning hole; through the arrangement, when the bushing is connected with the end cover, a worker only needs to insert the positioning rod into the positioning hole, so that the positions of the plurality of electric cylinders and the overhaul holes can be guaranteed to be in one-to-one correspondence, and the situation that the positions of the electric cylinders and the overhaul holes are not corresponding after the bushing is connected with the end cover can be avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the external structure of a ball mill in a state where an end cover and a bushing are connected in an embodiment;

FIG. 2 is a schematic view of the internal structure of the ball mill in the state of connecting the end cover and the bushing in the embodiment;

fig. 3 is a schematic structural view of a bushing in an embodiment.

Reference numerals illustrate:

in the figure, 1, an end cover; 2. a straight tube portion; 3. a cone section; 4. a bushing; 5. an end plate; 6. a cylinder; 7. a convex ring; 8. a seal; 9. an electric cylinder; 10. a pressing ring; 11. a push plate; 12. an access opening; 13. sealing plate; 14. a positioning rod; 15. and positioning holes.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Examples:

referring to fig. 1-3, the sealing structure of the end cover bushing of the ball mill disclosed by the utility model comprises an end cover 1 and a bushing 4. The end cap 1 comprises an integrally formed straight barrel portion 2 and a tapered barrel portion 3. The bushing 4 comprises an integrally formed end plate 5 and a cylinder 6, wherein the cylinder 6 is a cylinder.

The cylinder body 6 of the bushing 4 is nested in the straight cylinder part 2 of the end cover 1, the end plate 5 is attached to the section of the straight cylinder part 2 far away from the conical cylinder part 3, and the end plate 5 and the straight cylinder part are fixedly connected with a nut through bolts, and a gap is reserved between the cylinder body 6 and the straight cylinder part 2. The outer wall of the end of the cylinder 6, which is far away from the end plate 5, is provided with a convex ring 7, and the convex ring 7 is welded with the cylinder 6 and is attached to the inner wall of the straight cylinder part 2. The bulge loop 7 is close to end plate 5 one side and is provided with annular sealing member 8, and sealing member 8 has elasticity, and sealing member 8 and the laminating of the inner wall of straight section of thick bamboo 2 and the outer wall of barrel 6, sealing member 8 can be O type circle, rubber circle or packing.

The outer wall of the cylinder 6 is provided with an electric pressing component which is used for pressing the sealing element 8 on the surface of the convex ring 7. The electric compacting assembly comprises an electric cylinder 9 and a squeeze ring 10. The extrusion ring 10 is slidably sleeved on the outer wall of the cylinder 6 and is attached to the inner wall of the straight cylinder part 2, and the extrusion ring 10 is arranged on one side of the sealing piece 8, which is away from the convex ring 7. The electric cylinder 9 is fixedly arranged on the outer wall of the cylinder body 6 through bolts, the electric cylinder 9 is located on one side, deviating from the sealing piece 8, of the extrusion ring 10, the push rod of the electric cylinder 9 points to the extrusion ring 10, and the push rod of the electric cylinder 9 can push the extrusion ring 10 to a direction close to the convex ring 7. The electric cylinder 9 is a KT servo electric cylinder (direct connection type) produced by Huizhou Kett measurement and control engineering Co Ltd, the specific model is DDG80, the rated maximum thrust is within 500KG, and the electric cylinder 9 is electrically connected with a PLC control system, so that accurate control can be realized. The electric cylinders 9 are at least two, the electric cylinders 9 are uniformly distributed around the outer wall of the cylinder body 6 at intervals, and the electric cylinders 9 work together, so that the extrusion ring 10 can be ensured to move stably.

By the arrangement, the sealing element 8 can form a sealing structure between the straight cylinder part 2 and the cylinder body 6, so that a sealing effect is achieved; in addition, because the outer wall of barrel 6 is provided with electronic clamp assembly, when sealing member 8 takes place wearing and tearing after long-term use, can extrude sealing member 8 to the direction that is close to bulge loop 7 through electronic clamp assembly, because sealing member 8 has elasticity this moment, therefore sealing member 8 can laminate with barrel 6 and straight section of thick bamboo 2 again to resume sealed effect, guaranteed seal structure's reliable effectively, consequently need not to carry out frequent change to sealing member 8, play the effect that increases sealing member 8's life.

The end of the push rod of the electric cylinder 9 is provided with a push plate 11, and the area of the push plate 11 is larger than the cross-sectional area of the push rod of the electric cylinder 9. Through the arrangement, the stress area of the push plate 11 can be increased, the pressure intensity of the extrusion ring 10 can be reduced, and the effect of protecting the extrusion ring 10 is achieved.

The electric cylinder 9 is inevitably broken down after long-term use, and an access hole 12 is formed in the outer wall of the straight cylinder part 2 for convenient maintenance. The number of the access holes 12 is the same as that of the electric cylinders 9 and the positions of the access holes are in one-to-one correspondence, sealing plates 13 are embedded in the access holes 12, the sealing plates 13 are fixedly connected with the straight barrel part 2 through bolts, and handles (not shown in the figure) are arranged on the outer surfaces of the sealing plates 13. Through the arrangement, when the electric cylinder 9 breaks down, a worker can directly repair or replace the electric cylinder 9 at the access hole 12 without detaching and removing the bushing 4 from the end cover 1, and the operation is simple and convenient.

The end face of the straight cylinder part 2 far away from the conical cylinder part 3 is provided with a positioning rod 14, the surface of the end plate 5 close to the cylinder body 6 is provided with a positioning hole 15 matched with the positioning rod 14, and the positioning rod 14 is inserted into the positioning hole 15. Through the arrangement, when the lining 4 is connected with the end cover 1, a worker only needs to insert the positioning rod 14 into the positioning hole 15, so that the positions of the plurality of electric cylinders 9 and the access holes 12 can be guaranteed to be in one-to-one correspondence, and the situation that the positions of the electric cylinders 9 and the access holes 12 are not corresponding after the lining 4 and the end cover 1 are connected can be avoided.

The working principle of the embodiment is as follows: because the outer wall of one end of the cylinder 6 far away from the end plate 5 is provided with the convex ring 7, the convex ring 7 is attached to the inner wall of the straight cylinder part 2, one side of the convex ring 7 close to the end plate 5 is provided with the annular sealing piece 8, the sealing piece 8 has elasticity, and the sealing piece 8 is attached to the inner wall of the straight cylinder part 2 and the outer wall of the cylinder 6; by the arrangement, the sealing element 8 can form a sealing structure between the straight cylinder part 2 and the cylinder body 6, so that a sealing effect is achieved; in addition, because the outer wall of the cylinder 6 is provided with the electric compression assembly, when the sealing element 8 is worn after long-term use, the sealing element 8 can be extruded to the direction close to the convex ring 7 through the electric compression assembly, and at the moment, because the sealing element 8 has elasticity, the sealing element 8 can be attached to the cylinder 6 and the straight cylinder part 2 again, so that the sealing effect is restored again, and the reliability and the effectiveness of the sealing structure are ensured; to sum up, for the present embodiment, when the seal 8 is worn, the electric pressing assembly is adjusted to restore the seal 8 to the sealing effect, and the seal 8 does not need to be directly replaced, so the sealing structure of the liner 4 of the ball mill end cover 1 provided by the present embodiment has the advantages of long service life, no need of frequent replacement, and good sealing effect.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. The utility model provides a ball mill end cover bush seal structure, includes end cover (1) and bush (4), end cover (1) include straight section of thick bamboo portion (2) and awl section of thick bamboo portion (3), bush (4) include end plate (5) and barrel (6), its characterized in that: the cylinder body (6) of the bushing (4) is nested in the straight cylinder part (2) of the end cover (1), and a space is reserved between the cylinder body (6) and the straight cylinder part (2); the outer wall of one end, far away from the end plate (5), of the cylinder body (6) is provided with a convex ring (7), the convex ring (7) is attached to the inner wall of the straight cylinder part (2), one side, close to the end plate (5), of the convex ring (7) is provided with an annular sealing piece (8), the sealing piece (8) is elastic, and the sealing piece (8) is attached to the inner wall of the straight cylinder part (2) and the outer wall of the cylinder body (6); the outer wall of the cylinder body (6) is provided with an electric compression assembly, and the electric compression assembly is used for compressing the sealing element (8) on the surface of the convex ring (7).

2. The ball mill end cap bushing seal structure of claim 1, wherein: the electric pressing assembly comprises an electric cylinder (9) and a pressing ring (10), the pressing ring (10) is arranged on the outer wall of the cylinder body (6) in a sliding sleeved mode and is attached to the inner wall of the straight cylinder portion (2), the pressing ring (10) is arranged on one side, deviating from the convex ring (7), of the sealing piece (8), the electric cylinder (9) is arranged on the outer wall of the cylinder body (6), and the pushing rod of the electric cylinder (9) can push the pressing ring (10) towards the direction close to the convex ring (7).

3. The ball mill end cap bushing seal structure of claim 2, wherein: at least two electric cylinders (9) are arranged, and a plurality of electric cylinders (9) are uniformly distributed around the outer wall of the cylinder body (6) at intervals.

4. The ball mill end cap bushing seal structure of claim 2, wherein: the end part of the push rod of the electric cylinder (9) is provided with a push plate (11), and the area of the push plate (11) is larger than the cross-sectional area of the push rod of the electric cylinder (9).

5. The ball mill end cap bushing seal structure of claim 2, wherein: the outer wall of straight section of thick bamboo portion (2) has seted up access hole (12), the quantity and the position one-to-one of electric jar (9) of access hole (12) are the same, the embedded sealing plate (13) that is equipped with of access hole (12), sealing plate (13) are through bolt fixed connection with straight section of thick bamboo portion (2).

6. The ball mill end cap bushing seal structure of claim 5, wherein: the end face of the straight cylinder part (2) far away from the conical cylinder part (3) is provided with a positioning rod (14), the surface of the end plate (5) close to the cylinder body (6) is provided with a positioning hole (15) matched with the positioning rod (14), and the positioning rod (14) is inserted into the positioning hole (15).