CN211009581U - Novel sealing device for main bearing of dry-method ball mill - Google Patents
Novel sealing device for main bearing of dry-method ball mill Download PDFInfo
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- CN211009581U CN211009581U CN201921417309.5U CN201921417309U CN211009581U CN 211009581 U CN211009581 U CN 211009581U CN 201921417309 U CN201921417309 U CN 201921417309U CN 211009581 U CN211009581 U CN 211009581U
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Abstract
The utility model belongs to the technical field of sealing of a dry ball mill, in particular to a novel sealing device for a main bearing of the dry ball mill, which is a double-layer adjustable sealing device and comprises a lip-shaped sealing ring, a felt ring, a sealing pressing plate and a sealing positioning ring, wherein the sealing pressing plate is arranged at one end of the sealing positioning ring, which is far away from the corresponding main bearing cover or main bearing seat, the sealing pressing plate, the sealing positioning ring, the main bearing cover and the outer circular surface of the main bearing seat form a U-shaped groove respectively, the lip-shaped sealing ring and the felt ring are arranged in the U-shaped groove, adjusting bolts are evenly arranged on the sealing positioning ring along the circumferential direction of the sealing positioning ring at intervals, the sealing ring can be pressed and attached to the main bearing cover, the main bearing seat and a hollow shaft shoulder of a revolving part again through the, the stability and the reliability of the transmission of the dry ball mill are improved, the maintenance and the replacement of equipment are reduced, and the pollution of oil products is avoided.
Description
Technical Field
The utility model belongs to the technical field of the sealing of dry process ball mill, especially relate to a novel sealing device for dry process ball mill base bearing.
Background
The dry ball mill and the tube mill are the most common and most common grinding equipment in the industrial departments of mines, building materials, chemical industry, metallurgy and the like, the sealing configuration form among the main bearing cover, the main bearing seat and the hollow shaft shoulder of the rotary part is an important factor for the dry ball mill to run well, the unreasonable sealing mode is easy to cause the leakage of lubricating oil to cause site pollution, dust invades the inside of the main bearing to cause the poor working environment of the main bearing, thereby reducing the bearing capacity of the bearing shell, even causing the problems of tile temperature rise, equipment jump stop, tile burning and the like.
At present, the main sealing structure of the existing dry ball mill and tube mill is a rubber sealing ring, a felt is fixed outside a sliding shoe cover through a rigid pressing plate and a bolt, the inner diameter of the rubber sealing ring is tightly attached to a shaft shoulder of a hollow shaft of a revolving part, so that lubricating oil is prevented from overflowing from a gap between the hollow shaft and a bearing cover, but the material of the rubber sealing ring is easy to wear, and in the rotating process of a sliding ring of the mill, on one hand, the sealing gap of the rubber sealing ring is gradually increased, the sealing capability is lost, the lubricating oil is leaked, the; on the other hand, dust impurities and worn rubber fine scraps are easy to intrude into the inner part of the main bearing along with the gap to pollute lubricating oil, so that the quality of oil is deteriorated, and the formation of an oil film between the main shaft bushing and the hollow shaft is influenced, thereby causing local dry friction between the main shaft bushing and the hollow shaft, promoting the temperature rise of the bushing and the equipment jump stop, seriously causing the bushing burning, and meanwhile, the polluted lubricating oil easily causes the damage of a hydraulic element of a lubricating system, so that the stable and reliable transmission cannot be realized, the production stop and the damage of the equipment are easy to cause, the service life of the equipment is shortened, and the maintenance cost is increased.
Therefore, a novel sealing device for improving the operation reliability of the dry ball mill, reducing oil pollution, preventing dust invasion, ensuring effective sealing, improving the field environment of the mill, prolonging the service life of the main bearing and saving cost is needed.
Disclosure of Invention
In order to solve the problem, the utility model discloses a novel sealing device for dry process ball mill, including double-deck adjustable sealed and lead oil, oil extraction from loop system, guarantee that dry process ball mill is stable, reliable transmission, the life of extension base bearing reduces the maintenance, stops oil pollution.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a novel sealing device for a main bearing of a dry-method ball mill is arranged between a main bearing cover, a main bearing seat and a hollow shaft shoulder of a rotary part of the mill, and the sealing device is a double-layer adjustable sealing device and comprises a lip-shaped sealing ring, a felt ring, a sealing pressing plate and a sealing positioning ring, wherein the sealing positioning ring is welded on the outer sides of the main bearing cover and the main bearing seat and is parallel to the outer circular surface of the hollow shaft shoulder, the sealing pressing plate is arranged at one end, far away from the corresponding main bearing cover or the main bearing seat, of the sealing positioning ring through a compression bolt, the sealing pressing plate, the sealing positioning ring and the outer circular surfaces of the main bearing cover and the main bearing seat respectively form a U-shaped groove, the lip-shaped sealing ring and the felt ring are arranged in the U-shaped groove, the lip-shaped sealing ring is arranged close to the, and the bolt holes are respectively and correspondingly provided with adjusting bolts which penetrate through the sealing positioning rings to prop against the lip-shaped sealing rings.
Furthermore, a plurality of grease filling holes are uniformly formed in the tooth lip-shaped sealing ring at intervals along the circumferential direction, one end of each grease filling hole faces the outer circular surface of the shaft shoulder of the hollow shaft, the other end of each grease filling hole faces the sealing positioning ring, a threaded hole penetrating through the sealing positioning ring is formed in the position, corresponding to the grease filling hole, of the sealing positioning ring, an oil cup is correspondingly fixed in the threaded hole through a bolt, a cup opening corresponds to the threaded hole, lubricating grease is filled through the oil cup, the lubricating grease sequentially passes through the threaded hole and the grease filling hole, the lubricating grease is filled into the joint surface of the tooth lip-shaped sealing ring and the hollow shaft, the friction effect is reduced.
Furthermore, the contact surfaces of the lip-shaped sealing ring and the main bearing cover as well as the shaft shoulder of the hollow shaft of the revolving part and the contact surfaces of the lip-shaped sealing ring and the main bearing seat as well as the shaft shoulder of the hollow shaft of the revolving part are respectively provided with a sunken groove.
Further, the lip-shaped sealing ring is made of a butadiene-acrylonitrile rubber material.
Further, sealing device still including leading oil, oil extraction from loop system, lead oil, oil extraction from loop system including leading oil groove, oil discharge hole, oil drain hole, be provided with at the interval on main bearing seat and sealing device contact surface and lead oil groove, oil discharge hole, lead oil groove, oil discharge hole and set up 45 downwards to the base bearing direction slope respectively, be equipped with the oil drain hole in main bearing seat 8 bottom.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an adjusting bolt compresses tightly lip seal elastic deformation and can overcome spare part machining error, circle when equipment fixing error and quill shaft operate is beated, guarantee reliable seal, can make the sealing washer compress tightly laminating main bearing cap again through adjusting bolt after the lip seal wearing and tearing, main bearing seat and gyration portion quill shaft shoulder, build sealed dry environment for the dry process ball mill, prevent that lubricating oil from revealing, stop oil pollution and keep the cleanness of bearing tile and sliding ring contact surface, avoid bearing tile consequently the lasting high temperature that causes, reliable sealing performance has both been guaranteed and sealing device's life has been prolonged, structurally prevent oil pollution, the life of main bearing tile has been prolonged, avoid the main bearing tile high temperature and equipment jump stops, potential safety hazards such as burning tile, the life cycle of extension dry process ball mill base bearing, this sealing device has solved dry process ball mill base bearing department lubricating oil and has revealed, The problems of dust invasion and the like are solved, the transmission stability and reliability of the dry ball mill are improved, the maintenance and replacement of equipment are reduced, and the pollution of oil products is avoided.
Drawings
FIG. 1 is a schematic view of the installation position of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
FIG. 3 is a schematic axial half-sectional view of a main bearing housing according to the present invention;
in the upper diagram: 1-a main bearing cap; 2-sealing means; 3-a hollow shaft; 4-a main bearing shell; 2.1-lip seal ring; 2.2-felt loop; 2.3-sealing the press plate; 2.4-oil filling holes; 2.5-hold down bolt 2.5; 2.6-sealing the positioning ring; 2.7-adjusting the bolt; 5-oil guide grooves; 6-oil drain hole; 7-oil drain hole; 8-main bearing seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
With reference to the attached drawings 1-3, a novel sealing device 2 for a main bearing of a dry ball mill is described in detail, the sealing device 2 is arranged between a main bearing cover 1 and a main bearing seat 8 of the mill and a shaft shoulder of a hollow shaft 3 of a revolving part, the sealing device 2 is a double-layer adjustable sealing device 2 and comprises a lip-shaped sealing ring 2.1, a felt ring 2.2, a sealing pressure plate 2.3 and a sealing positioning ring 2.6, the sealing positioning ring 2.6 is welded at the outer sides of the main bearing cover 1 and the main bearing seat 8 and is parallel to the outer circular surface of the shaft shoulder of the hollow shaft 3, the sealing pressure plate 2.3 is arranged at one end of the sealing positioning ring 2.6, which is far away from the corresponding main bearing cover 1 or the main bearing seat 8, through a compression bolt, the sealing pressure plate 2.3, the sealing positioning ring 2.6 and the outer circular surfaces of the main bearing cover 1 and the main bearing seat 8 form a, the lip-shaped sealing ring 2.1 is arranged close to the main bearing cover 1 or the main bearing seat 8, the felt ring 2.2 is arranged close to the sealing pressure plate 2.3, the lip-shaped sealing ring 2.1 prevents oil from overflowing outwards, the felt ring 2.2 compresses the lip-shaped sealing ring 2.1 to further prevent the oil from overflowing outwards, the felt ring has a dustproof function and prevents external dust impurities from invading the main bearing, a plurality of bolt holes are uniformly arranged on the sealing positioning ring 2.6 along the circumferential direction of the sealing positioning ring, adjusting bolts 2.7 are respectively and correspondingly arranged in the bolt holes, the adjusting bolts 2.7 penetrate the sealing positioning ring 2.6 to prop against the lip-shaped sealing ring 2.1, the joint degree between the lip-shaped sealing ring 2.1 and a hollow shaft 3 shaft shoulder, between the sealing ring 2.1 and the main bearing cover 1 of the main bearing mill, between the bearing seat 8 and the felt ring 2.2 is adjusted by adjusting the length of the adjusting bolts 2.7, so as to avoid that the lubricating oil from the sealing device 2, reliable sealing is guaranteed due to equipment installation errors and circular runout of the hollow shaft 3 during operation, the lip-shaped sealing ring 2.1 and the shaft shoulder contact surface of the hollow shaft 3 are abraded, the adjusting bolt 2.7 is tightened to enable the sealing ring to be tightly pressed and attached again, reliable sealing performance is guaranteed, the service life of the sealing device 2 is prolonged, oil pollution is structurally prevented, and continuous high temperature caused by the main shaft tile 4 is avoided.
The tooth lip-shaped sealing ring 2.1 is provided with a plurality of grease filling holes 2.4 at uniform intervals along the circumferential direction, one end of each grease filling hole 2.4 faces the outer circular surface of a shaft shoulder of the hollow shaft 3, the other end of each grease filling hole faces the sealing positioning ring 2.6, a threaded hole penetrating through the sealing positioning is formed in the position, corresponding to the grease filling hole 2.4, of the sealing positioning ring 2.6, an oil cup is correspondingly fixed at the threaded hole through a bolt, a cup opening corresponds to the threaded hole, lubricating grease is filled through the oil cup, the lubricating grease sequentially passes through the threaded hole and the grease filling hole 2.4, the lubricating grease is filled into the joint surface of the tooth lip-shaped sealing ring 2.1 and the hollow shaft 3, the friction effect is reduced, the sealing.
The contact surface of the lip-shaped sealing ring 2.1 and the main bearing cover 1 and the shaft shoulder of the hollow shaft 3 of the revolving part and the contact surface of the lip-shaped sealing ring 2.1 and the main bearing seat 8 and the shaft shoulder of the hollow shaft 3 of the revolving part are respectively provided with a sunken groove to prevent oil from flowing outwards.
The lip-shaped sealing ring 2.1 is made of butadiene acrylonitrile rubber material, and is wear-resistant and high-temperature resistant.
The sealing device 2 further comprises an oil guiding and oil discharging self-loop system, the oil guiding and oil discharging self-loop system comprises an oil guiding groove 5, an oil discharging hole 6 and an oil discharging hole 7, the oil guiding groove 5 and the oil discharging hole 6 are arranged on the contact surface of the main bearing seat 8 and the sealing device 2 at intervals, the included angle between the center of the oil guiding groove 5 and the center of the oil discharging hole 6 and the axis connecting line of the hollow shaft 3 is 30-45 degrees, the oil guiding groove 5 and the oil discharging hole 6 are respectively arranged in the direction of the main bearing in an inclined downward 45 degrees manner, namely a circulation channel leading into the main bearing is arranged in the closed space of the sealing device 2, the redundant lubricating oil at the sealing position is smoothly guided into the main bearing seat 8 through the oil guiding groove 5 and the oil discharging hole 6, the lubricating oil in the main bearing seat 8 is prevented from overflowing outwards to cause external oil pollution, meanwhile, the mode of arranging the lubricating oil, an oil drain hole 7 is formed in the bottom of the main bearing seat 8, and when lubricating oil needs to be replaced after the equipment runs for a certain time, the lubricating oil in the main bearing can smoothly flow out of the oil drain hole 7 and be replaced by opening the cover of the oil drain hole 7.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for the convenience of description of the present invention and for simplicity of description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the present invention should not be construed as being limited thereto, and it should be noted that the terms "mounted" and "connected" should be interpreted broadly, for example, as being able to be fixedly connected, detachably connected, or integrally formed, mechanically connected, or indirectly connected through an intermediate medium, and the specific meaning of the terms in the present application can be understood through specific situations.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a novel sealing device for dry process ball mill main bearing, sealing device sets up between mill main bearing lid and main bearing seat and gyration portion quill shaft shoulder, characterized by: the sealing device is a double-layer adjustable sealing device and comprises a lip-shaped sealing ring, a felt ring, a sealing pressure plate and a sealing positioning ring, the sealing positioning ring is welded on the outer sides of the main bearing cover and the main bearing seat and is parallel to the outer circular surface of the shaft shoulder of the hollow shaft, one end of the sealing positioning ring, which is far away from the corresponding main bearing cover or main bearing seat, is provided with a sealing pressure plate through a compression bolt, the sealing pressure plate, the sealing positioning ring and the outer circular surfaces of the main bearing cover and the main bearing seat respectively form a U-shaped groove, a lip-shaped sealing ring and a felt ring are respectively arranged in the U-shaped groove, the lip-shaped sealing ring is arranged close to the main bearing cover or the main bearing seat, the felt ring is arranged close to the sealing pressure plate, a plurality of bolt holes are uniformly arranged on the sealing positioning ring at intervals along the circumferential direction of the sealing positioning ring, adjusting bolts are correspondingly arranged in the bolt holes respectively, and the adjusting bolts penetrate through the sealing positioning ring to prop against the lip-shaped sealing ring.
2. The novel sealing device for the main bearing of the dry ball mill as claimed in claim 1, wherein: the tooth lip-shaped sealing ring is provided with a plurality of grease filling holes at uniform intervals along the circumferential direction, one end of each grease filling hole faces the outer circular surface of the shaft shoulder of the hollow shaft, the other end of each grease filling hole faces the sealing positioning ring, a threaded hole penetrating through the sealing positioning ring is formed in the position, corresponding to the grease filling holes, of the sealing positioning ring, an oil cup is fixed in the threaded hole through a bolt in a corresponding mode, and the cup mouth corresponds to the threaded hole.
3. The novel sealing device for the main bearing of the dry ball mill as claimed in claim 1, wherein: and the contact surfaces of the lip-shaped sealing ring and the main bearing cover as well as the shaft shoulder of the hollow shaft of the rotary part and the contact surfaces of the lip-shaped sealing ring and the main bearing seat as well as the shaft shoulder of the hollow shaft of the rotary part are respectively provided with a sunken groove.
4. The novel sealing device for the main bearing of the dry ball mill as claimed in claim 1, wherein: the lip-shaped sealing ring is made of butadiene acrylonitrile rubber material.
5. The novel sealing device for the main bearing of the dry ball mill as claimed in claim 1, wherein: the sealing device further comprises a self-loop system for guiding oil and discharging oil, the self-loop system for guiding oil and discharging oil comprises an oil guiding groove, an oil discharging hole and an oil discharging hole, the oil guiding groove and the oil discharging hole are arranged on the contact surface of the main bearing seat and the sealing device at intervals, the oil guiding groove and the oil discharging hole are respectively obliquely arranged downwards by 45 degrees towards the direction of the main bearing, and the oil discharging hole is arranged at the bottom of the main bearing seat 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417309.5U CN211009581U (en) | 2019-08-29 | 2019-08-29 | Novel sealing device for main bearing of dry-method ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417309.5U CN211009581U (en) | 2019-08-29 | 2019-08-29 | Novel sealing device for main bearing of dry-method ball mill |
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| Publication Number | Publication Date |
|---|---|
| CN211009581U true CN211009581U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921417309.5U Active CN211009581U (en) | 2019-08-29 | 2019-08-29 | Novel sealing device for main bearing of dry-method ball mill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819146A (en) * | 2021-09-24 | 2021-12-21 | 洛阳大华重工科技股份有限公司 | Sliding bearing seat for tower mill |
| CN115245859A (en) * | 2022-05-13 | 2022-10-28 | 扬州盛旭科技有限公司 | Feeding device and feeding method for horizontal planetary grinding cylinder |
-
2019
- 2019-08-29 CN CN201921417309.5U patent/CN211009581U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819146A (en) * | 2021-09-24 | 2021-12-21 | 洛阳大华重工科技股份有限公司 | Sliding bearing seat for tower mill |
| CN115245859A (en) * | 2022-05-13 | 2022-10-28 | 扬州盛旭科技有限公司 | Feeding device and feeding method for horizontal planetary grinding cylinder |
| CN115245859B (en) * | 2022-05-13 | 2024-02-20 | 扬州盛旭科技有限公司 | Feeding device and feeding method of horizontal planetary mill cylinder |
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