CN218494186U

CN218494186U - Sealing device for ball mill

Info

Publication number: CN218494186U
Application number: CN202122463044.6U
Authority: CN
Inventors: 蒋国强
Original assignee: Jiangsu Zinzhi Technology Seals Co ltd
Current assignee: Jiangsu Zinzhi Technology Seals Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2023-02-17
Anticipated expiration: 2031-10-13

Abstract

The utility model discloses a sealing device for ball mill, include: equipment axle sleeve, equipment box, rotating ring and quiet ring, rotating ring fixed connection are on the equipment axle sleeve, and quiet ring fixed connection is on the equipment box, and quiet ring cup joints on the rotating ring, and the cross-section of rotating ring is anti-C style of calligraphy, and the rotating ring includes first inner ring, first connecting ring and first outer ring, first inner ring, first connecting ring and first outer ring formula structure as an organic whole, the utility model has the advantages of it is following: when the utility model is used, the lubricating medium in the sealed cavity enters the oil storage tank from the space between the first outer ring and the second outer ring, the first sealing gear ring and the second sealing gear ring arranged in the oil storage tank can prevent the grease from leaking out of the oil storage tank, and simultaneously can prevent the outside dirt from entering the sealed cavity from the oil storage tank; in addition, a dustproof lip is arranged between the second inner ring and the second connecting ring, so that external dust or other dirt can be effectively prevented from entering the sealing device.

Description

Sealing device for ball mill

Technical Field

The utility model relates to a ball mill technical field, concretely relates to a sealing device for ball mill.

Background

Labyrinth seals are seals in which a plurality of tortuous chambers are provided between the rotating and stationary parts to reduce leakage. The labyrinth seal structure has several successively arranged ring sealing teeth around the rotating shaft, and between the teeth there are formed a series of cut-off gaps and expansion cavities, and the sealed medium can produce throttling effect when passing through the labyrinth gaps so as to attain the goal of resisting leakage. This form of seal is widely used for sealing shaft ends and stages of steam turbines, gas turbines, compressors, blowers.

In the prior art, in some devices with strict use standards, besides ensuring zero leakage of a lubricating medium in a sealed cavity, external pollutants are prevented from entering the sealed cavity. And the service life of the sealing device is also required to be higher, so that the problem that the sealing device with excellent sealing performance and long service life is provided is urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is in some equipment to the service standard is stricter, except guaranteeing the zero leakage of lubricant in the sealed chamber, still prevent that external pollutant from getting into sealed intracavity portion, also have higher requirement to sealing device's life moreover, provide a sealing device for ball mill for this.

The utility model provides a technical scheme that technical problem adopted is: a seal for a ball mill, comprising: equipment axle sleeve, equipment box, rotating ring and quiet ring, rotating ring fixed connection is on the equipment axle sleeve, quiet ring fixed connection is on the equipment box, quiet ring cup joints on the rotating ring, the cross-section of rotating ring is anti-C style of calligraphy, the rotating ring includes first inner ring, first connecting ring and first outer ring, first inner ring, first connecting ring and first outer ring formula structure as an organic whole, first inner ring fixed cup joints on the equipment axle sleeve, be provided with bellied first sealed ring gear on the outer disc of first inner ring or on the interior or outer disc of first outer ring, the cross-section of quiet ring is the C style of calligraphy, quiet ring includes second inner ring, second connecting ring, second outer ring and solid fixed ring, second inner ring, second outer ring and solid fixed ring formula structure as an organic whole, be provided with dustproof lip mouth between second inner ring and the second connecting ring, gu fixed ring pastes on the equipment box flatly, be provided with the second outer ring on the oil storage surface of second outer ring or on the interior or the second inner ring of second or be provided with bellied first sealed ring gear and the second outer ring gear is located between the quiet ring gear and the second outer ring, the quiet ring is located the mutual tortuous between the quiet ring gear and the second outer ring, the quiet ring.

Preferably, an oil return hole groove is formed in the bottom of the second sealing toothed ring on the second outer ring, an oil return hole groove is also formed in the position, corresponding to the oil return hole groove, on the equipment box body, and lubricating media in the oil storage groove flow back into the sealing cavity through the oil return hole groove, so that the economic benefit is extremely high.

Preferably, the surface of the second connecting ring is fixedly connected with a static ring Z-shaped pressing plate, the static ring Z-shaped pressing plate is uniformly distributed on the surfaces of the second connecting ring and the second outer ring, the outermost end of the static ring Z-shaped pressing plate is attached to a pressing plate, a pressing bolt is in threaded connection between the outermost end of the pressing plate and the equipment box body, the inner end of the static ring Z-shaped pressing plate is pressed on the second connecting ring, the static ring Z-shaped pressing plate is pressed on the surfaces of the second connecting ring and the second outer ring, and then the static ring Z-shaped pressing plate is fixed on the equipment box body through the pressing plate and the pressing bolt to finish fixation.

Preferably, the outer ring wall of the first inner ring is fixedly sleeved with a throat hoop, the surface of the equipment shaft sleeve is fixedly connected with a movable ring support, the first inner ring is fixedly connected with the movable ring support, a fixed ring long pressing strip is pressed between the fixed ring and the fixed ring Z-shaped pressing plate, and the first inner ring is fixedly connected with the equipment shaft sleeve through the throat hoop and the movable ring support.

Preferably, first sealed ring gear and the sealed ring gear of second all are the comb tooth form, first sealed ring gear and the sealed ring gear of second crisscross distribution each other, the first sealed ring gear and the sealed ring gear of second of crisscross distribution can prevent lubricating medium from leaking from the oil storage tank, also can prevent simultaneously that external filth from getting into sealed chamber by the oil storage tank, play good sealed effect.

Preferably, the second inner ring, the second connecting ring and the dust lip are of an integrated structure, and the dust lip integrally connected with the second connecting ring can more effectively prevent external dust or other dirt from entering the sealing device.

Preferably, the oil storage tank between the movable ring and the fixed ring is divided into three parts, and each part is provided with at least two raised first sealing tooth rings and second sealing tooth rings.

Preferably, the surfaces of the movable ring, the stationary ring, the first sealing toothed ring and the second sealing toothed ring are coated with graphite coatings, and the graphite coatings can play a role in protection and prolong the service life.

The utility model has the advantages of it is following:

when the utility model is used, a dustproof lip is arranged between the second inner ring and the second connecting ring, so that external dust or other dirt can be effectively prevented from entering the sealing device, the lubricating medium in the sealing cavity is prevented from being polluted, the service life is prolonged, the lubricating medium in the sealing cavity enters the oil storage tank from the space between the first outer ring and the second outer ring, the first sealing tooth ring and the second sealing tooth ring arranged in the oil storage tank can prevent grease from leaking out of the oil storage tank, and meanwhile, the external dirt can be prevented from entering the sealing cavity from the oil storage tank; and the bottom of the second sealing gear ring on the second outer ring is provided with an oil return hole groove, the position of the equipment box body corresponding to the oil return groove is also provided with the oil return groove, and a lubricating medium in the oil storage groove flows back to the sealing cavity through the oil return groove, so that the economic benefit is extremely high.

Drawings

Fig. 1 is a schematic sectional view of a sealing device for a ball mill according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural view of a rotating ring joint of a sealing device for a ball mill according to a preferred embodiment of the present invention.

Description of the reference numerals: 1. an equipment shaft sleeve; 2. an equipment box body; 3. a moving ring; 31. a first inner ring; 32. a first connecting ring; 33. a first outer ring; 4. a hose clamp; 5. a first seal ring gear; 6. a moving ring support; 7. a stationary ring; 71. a second inner ring; 72. a second connection ring; 73. a second outer ring; 74. a fixing ring; 8. a stationary ring long pressing strip; 9. a compression bolt; 10. a second sealing ring gear; 11. an oil return hole groove; 12. a stationary ring Z-shaped pressing plate; 13. pressing a plate; 14. a dustproof lip.

Detailed Description

The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

As shown in fig. 1-2, a sealing device for a ball mill comprises an equipment shaft sleeve 1, an equipment box 2, a movable ring 3 and a stationary ring 7, wherein the movable ring 3 is fixedly connected to the equipment shaft sleeve 1, the stationary ring 7 is fixedly connected to the equipment box 2, the stationary ring 7 is sleeved on the movable ring 3, the cross section of the movable ring 3 is in an inverted C shape, the movable ring 3 comprises a first inner ring 31, a first connecting ring 32 and a first outer ring 33, the first inner ring 31, the first connecting ring 32 and the first outer ring 33 are in an integrated structure, the first inner ring 31 is fixedly sleeved on the equipment shaft sleeve 1, a raised first sealing toothed ring 5 is arranged on the outer circumferential surface of the first inner ring 31 or on the inner or outer circumferential surface of the first outer ring 33, the cross section of the stationary ring 7 is in a C shape, the stationary ring 7 comprises a second inner ring 71, a second connecting ring 72, a second outer ring 73 and a stationary ring 74, the second inner ring 71, the second connecting ring 72, the second outer ring 73 and the stationary ring 74 are in an integrated structure, a dustproof lip 14 is arranged between the second inner ring 71 and the second connecting ring 72, the dustproof lip 14 can effectively prevent outside dust or other dirt from entering the sealing device, so as to pollute the lubricating medium in the sealing cavity, a zigzag oil storage groove is formed between the movable ring 3 and the static ring 7, when in use, the lubricating medium in the sealing cavity enters the oil storage groove from a position between the first outer ring 33 and the second outer ring 73, the fixed ring 74 is flatly attached to the equipment box 2, a raised second sealing toothed ring 10 is arranged on the inner circular surface of the second outer ring 73 or on the inner or outer circular surface of the second inner ring 71, the static ring 7 and the movable ring 3 are mutually nested and installed, the first outer ring 33 is arranged between the second inner ring 71 and the second outer ring 73, the second inner ring 71 is arranged between the first outer ring 33 and the first inner ring 31, the first sealing toothed ring 5 and the second sealing toothed ring 10 arranged in the oil storage groove can prevent the lubricating medium from leaking out of the oil storage groove, meanwhile, outside dirt can be prevented from entering the sealing cavity from the oil storage tank.

The second inner ring 71, the second connecting ring 72 and the dust lip 14 are of an integrated structure, and the dust lip 14 integrally connected with the second connecting ring 72 can more effectively prevent external dust or other dirt from entering the sealing device.

In order to better prevent external dirt from entering the sealing cavity from the oil storage tank, the oil storage tank between the movable ring 3 and the fixed ring 7 is divided into three parts, each part is provided with at least two raised first sealing tooth rings 5 and second sealing tooth rings 10, and the first sealing tooth rings 5 and the second sealing tooth rings 10 arranged on each part of the oil storage tank can better prevent the external dirt from entering the sealing cavity.

Wherein, for better fixing first inner ring 31, the fixed cover of the outer rampart of first inner ring 31 has connect larynx hoop 4, equipment axle sleeve 1 fixed surface is connected with rotating ring support 6, first inner ring 31 and rotating ring support 6 fixed connection, the pressfitting has quiet ring length layering 8 between solid fixed ring 74 and the quiet ring Z type clamp plate 12, first inner ring 31 is through larynx hoop 4 and rotating ring support 6 fixed connection on equipment axle sleeve 1, more firm.

In order to better perform oil return, the bottom of the second sealing ring gear 10 on the second outer ring 73 is provided with an oil return hole groove 11, the position of the equipment box body 2 corresponding to the oil return hole groove 11 is also provided with the oil return hole groove 11, and a lubricating medium in the oil storage groove flows back to the sealing cavity through the oil return hole groove 11, so that the oil return device can be reused, and has extremely high economic benefit.

Wherein, for better fixing the second connecting ring 72, the surface of the second connecting ring 72 is fixedly connected with a static ring Z-shaped pressing plate 12, the static ring Z-shaped pressing plate 12 is uniformly distributed on the surfaces of the second connecting ring 72 and the second outer ring 73, the outermost end of the static ring Z-shaped pressing plate 12 is attached with a pressing plate 13, a pressing bolt 9 is in threaded connection between the outermost end of the pressing plate 13 and the equipment box body 2, the inner end of the static ring Z-shaped pressing plate 12 is pressed on the second connecting ring 72, the static ring Z-shaped pressing plate 12 is pressed on the surfaces of the second connecting ring 72 and the second outer ring 73, and then the static ring Z-shaped pressing plate 12 is fixed on the equipment box body 2 through the pressing plate 13 and the pressing bolt 9, so that the pressing plate 13 is attached to the static ring Z-shaped pressing plate 12 to complete the fixation.

Wherein, for better sealing, first sealed ring gear 5 and the sealed ring gear 10 of second all are comb-tooth form, and first sealed ring gear 5 and the crisscross distribution of second sealed ring gear 10 each other, and crisscross first sealed ring gear 5 and the sealed ring gear 10 of second that distribute can prevent lubricating medium from leaking in the oil storage tank, also can prevent simultaneously that external filth from getting into sealed chamber by the oil storage tank, play good sealed effect.

In order to prolong the service life, the surfaces of the movable ring 3, the stationary ring 7, the first sealing toothed ring 5 and the second sealing toothed ring 10 are coated with graphite coatings, and the graphite coatings can play a role in protection and prolong the service life.

The working principle is as follows: the dustproof lip 14 is arranged between the second inner ring 71 and the second connecting ring 72, so that external dust or other dirt can be effectively prevented from entering the sealing device, and lubricating media in the sealing cavity can be polluted, a zigzag oil storage groove is formed between the movable ring 3 and the stationary ring 7, when the lubricating device is used, the lubricating media in the sealing cavity enter the oil storage groove from the position between the first outer ring 33 and the second outer ring 73, the first sealing toothed ring 5 and the second sealing toothed ring 10 arranged in the oil storage groove can prevent the lubricating media from leaking out of the oil storage groove, and meanwhile, external dirt can be prevented from entering the sealing cavity from the oil storage groove, in addition, the bottom of the second sealing toothed ring 10 on the second outer ring 73 is provided with an oil return hole groove 11, the position, corresponding to the oil return hole groove 11, on the equipment box body 2 is also provided with an oil return hole groove 11, the lubricating media in the oil storage groove can flow back into the sealing cavity through the oil return hole groove 11, the economic benefits are achieved, the surfaces of the movable ring 3, the stationary ring 7, the first sealing toothed ring 5 and the second sealing toothed ring 10 are coated with protective graphite coatings, and the service life is prolonged.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Other parts not described in detail in the present invention belong to the prior art, and are not described herein again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A seal for a ball mill comprising: the device comprises a device shaft sleeve (1), a device box body (2), a moving ring (3) and a static ring (7), and is characterized in that the moving ring (3) is fixedly connected to the device shaft sleeve (1), the static ring (7) is fixedly connected to the device box body (2), the static ring (7) is sleeved on the moving ring (3), the cross section of the moving ring (3) is in an inverted C shape, the moving ring (3) comprises a first inner ring (31), a first connecting ring (32) and a first outer ring (33), the first inner ring (31), the first connecting ring (32) and the first outer ring (33) are in an integrated structure, the first inner ring (31) is fixedly sleeved on the device shaft sleeve (1), the outer circular surface of the first inner ring (31) or the inner or outer circular surface of the first outer ring (33) is provided with a raised first sealing toothed ring (5), the cross section of the static ring (7) is in a C shape, the static ring (7) comprises a second inner connecting ring (71), a second outer ring (73), a second lip (72), a second inner ring (71) and a second lip (71), a second outer ring (73) and a second lip (71) are arranged between the second lip ring (71), the fixed ring (74) is flatly attached to the equipment box body (2), a second raised sealing gear ring (10) is arranged on the inner circular surface of the second outer ring (73) or the inner or outer circular surface of the second inner ring (71), the fixed ring (7) and the movable ring (3) are mutually sleeved and embedded, the first outer ring (33) is positioned between the second inner ring (71) and the second outer ring (73), the second inner ring (71) is positioned between the first outer ring (33) and the first inner ring (31), and a zigzag oil storage groove is formed between the movable ring (3) and the fixed ring (7);

the first sealing toothed ring (5) and the second sealing toothed ring (10) are both in a comb shape, and the first sealing toothed ring (5) and the second sealing toothed ring (10) are distributed in a staggered mode;

the surfaces of the movable ring (3), the stationary ring (7), the first sealing toothed ring (5) and the second sealing toothed ring (10) are coated with graphite coatings.

2. The sealing device for the ball mill according to claim 1, wherein the second outer ring (73) has a oil return hole groove (11) formed at the bottom of the second seal ring gear (10), and the equipment box (2) has an oil return hole groove (11) formed at a position corresponding to the oil return hole groove (11).

3. The sealing device for the ball mill according to claim 1, wherein a stationary ring Z-shaped pressure plate (12) is fixedly connected to the surface of the second connecting ring (72), the stationary ring Z-shaped pressure plate (12) is uniformly distributed on the surfaces of the second connecting ring (72) and the second outer ring (73), a pressure plate (13) is attached to the outermost end of the stationary ring Z-shaped pressure plate (12), a compression bolt (9) is in threaded connection between the outermost end of the pressure plate (13) and the equipment box body (2), and the inner end of the stationary ring Z-shaped pressure plate (12) is pressed on the second connecting ring (72).

4. The sealing device for the ball mill according to claim 3, characterized in that the throat hoop (4) is fixedly sleeved on the outer ring wall of the first inner ring (31), the movable ring support (6) is fixedly connected to the surface of the equipment shaft sleeve (1), the first inner ring (31) is fixedly connected with the movable ring support (6), and the stationary ring long pressing strip (8) is pressed between the stationary ring (74) and the stationary ring Z-shaped pressing plate (12).

5. A sealing device for a ball mill according to claim 1, characterized in that the second inner ring (71), the second connection ring (72) and the dust lip (14) are of an integral structure.

6. A seal for a ball mill according to claim 1, characterized in that the oil reservoir between the moving ring (3) and the stationary ring (7) is divided into three parts, and each part has at least two raised first (5) and second (10) sealing rings.