A ball mill sliding bearing oil leakage prevention structure

Abstract

The utility model provides an anti-leakage structure for a ball mill sliding shoe bearing, which is provided with a plurality of scraping devices on the inner side of the sliding shoe cover that is not in contact with the support shoe to thoroughly scrape off the lubricating oil on the inner wall of the oil retaining ring. A structure in which a support, a support rod and a spring cooperate with each other and the principle of lever is used to convert the rebound force of the spring into the pressing force of the scraping brush on the inner wall of the oil retaining ring. A combination of a rubber sealing ring and a felt ring is used to perform a second-layer sealing function for the lubricating oil not blocked by the oil retaining ring, and at the same time prevent external dust from entering the sliding shoe bearing and contaminating the oil. The top cross-section of the rubber sealing ring is claw-shaped, which reduces the contact area between the rubber sealing ring and the sealing surface of the sliding ring while achieving sealing of the sliding shoe bearing. The adjusting bolt is pressed against the cover plate on the outer side of the sealing ring, so as to conveniently adjust the gap between the rubber sealing ring and the sealing surface of the sliding ring, and the cover plate used when adjusting the gap can enable the sealing ring to always form a relatively good arc surface.

Description

Technical Field

[0001] The utility model relates to the technical field of ball mill sliding shoe bearings, in particular to an oil leakage prevention structure of a ball mill sliding shoe bearing. Background Art

[0002] In the production process of mining, building materials and other fields, ball mills are usually used to crush and grind various ores by dry or wet methods. Ball mills generally use sliding bearings as supports. However, in actual operation, sliding bearings are only sealed with rubber sealing rings, which have a greater risk of oil leakage. When the ball mill is working, the sliding ring rotates, and a large amount of lubricating oil on the sliding ring splashes onto the sliding cover, causing the lubricating oil to seep out through the gap between the rubber sealing ring and the sealing surface of the sliding ring. In addition, the long-term use of the rubber sealing ring will cause more serious wear and tear, which will increase the gap between the rubber sealing ring and the sealing surface of the sliding ring, further worsening the oil leakage. At the same time, external dust may penetrate into the shell through the gap and contaminate the oil.

[0003] Therefore, our company proposed an adjustable seal structure for sliding shoe bearings in application number 202122253141.2. By setting an oil-slinging groove and an oil-retaining ring on the sliding ring, the oil-retaining ring blocks most of the lubricating oil splashed from the sliding ring when the sliding ring passes through the support valve, thus preventing a large amount of oil leakage from the sliding shoe bearing. However, after the sliding ring passes through the support valve, a large amount of lubricating oil sticks to the oil-retaining ring. If it is not scraped off in time, the lubricating oil will rotate synchronously with the oil-retaining ring. Due to the centrifugal force generated by the rotation, the lubricating oil may be thrown onto the sliding shoe cover again. There is still a great risk of oil leakage, and the anti-leakage effect needs to be improved. Utility Model Content

[0004] The utility model aims to provide an oil leakage prevention structure for a ball mill sliding shoe bearing, by arranging a plurality of oil scraping devices on the inner side of the sliding shoe cover not in contact with the support bearing to thoroughly scrape off the lubricating oil on the inner wall of the oil retaining ring, thereby greatly reducing the occurrence of the lubricating oil being thrown onto the sliding shoe cover again.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a ball mill sliding shoe bearing anti-leakage structure, including a sliding shoe cover, a support shoe, an oil retaining ring and a sliding ring, the sliding shoe cover is evenly provided with a plurality of oil scraping devices on the inner side of the non-contacting part of the support shoe, the oil scraping device includes two supports relatively arranged on the inner side of the sliding shoe cover, the support is vertically provided with a support rod at one end away from the inner side of the sliding shoe cover, the tail ends of the support rod are connected by a horizontally arranged spring, the length of the support rod matches the position of the oil retaining ring of the sliding ring, the head end of the support rod is close to the inner side of the sliding shoe cover and is provided with an oil scraping brush matching the position of the oil retaining ring, the oil scraping brush is used to scrape the oil on the oil retaining ring when the sliding ring rotates.

[0006] Preferably, the bottom of the slip ring protrudes downward to provide a contact portion, the support bearing is in sliding contact with the contact portion of the slip ring, the bottom of the slip ring is provided with an oil-swinging groove in the non-contact portion, the oil-baffle ring is provided at the bottom of the slip ring, and the oil-baffle ring is located between the oil-swinging groove and the slipper cover.

[0007] Preferably, a rubber sealing ring is provided outside the sliding shoe cover at a position horizontally corresponding to the oil retaining ring, and a felt ring is provided outside the rubber sealing ring.

[0008] Preferably, the top cross-section of the rubber sealing ring is claw-shaped, and the claw-shaped end of the rubber sealing ring forms a seal with the sliding ring.

[0009] Preferably, a pressing plate and bolts are provided outside the felt ring, and the pressing plate and bolts are used to fix the rubber sealing ring and the felt ring in a horizontal direction.

[0010] Preferably, a cover plate, an annular steel plate and an adjusting bolt are provided at the bottom of the rubber sealing ring, and the cover plate, the annular steel plate and the adjusting bolt are used to fix the rubber sealing ring and the felt ring in a vertical direction.

[0011] The beneficial effects of the utility model are:

[0012] 1. This anti-leakage structure is equipped with multiple oil scraping devices on the inner side of the non-contacting part of the sliding shoe cover to thoroughly scrape off the lubricating oil on the inner wall of the oil retaining ring, greatly reducing the occurrence of the lubricating oil being thrown onto the sliding shoe cover again. It reduces the risk of oil leakage and improves the anti-leakage effect of the sliding shoe bearing.

[0013] 2. This anti-oil leakage structure adopts a structure composed of a support, a support rod and a spring. By using the principle of leverage, the rebound force of the spring can be converted into the pressing force of the oil scraper brush on the inner wall of the oil retaining ring, ensuring that the oil on the inner wall of the oil retaining ring is scraped off in a timely and thorough manner with zero power cost.

[0014] 3. This anti-leakage structure adopts a combination of rubber sealing rings and felt rings, which plays a second layer of sealing role for the lubricating oil not blocked by the oil retaining ring, and at the same time prevents external dust from entering the sliding shoe bearing and contaminating the oil.

[0015] 4. The top cross-section of the rubber seal ring of the oil leakage prevention structure is claw-shaped, which can reduce the contact area between the rubber seal ring and the sliding ring sealing surface while achieving the sealing of the sliding shoe bearing, thereby reducing the wear of the rubber seal ring, reducing the heat generated by friction, and increasing the life of the rubber seal ring.

[0016] 5. The adjusting bolt of the oil leakage prevention structure is pressed on the cover plate outside the sealing ring, which can more conveniently adjust the gap between the rubber sealing ring and the sliding ring sealing surface. The cover plate used when adjusting the gap can make the sealing ring always form a better arc surface, ensuring that the rubber sealing ring and the felt ring are pressed tightly on the sliding ring sealing surface and the pressure is more uniform, avoiding uneven force at each force point causing increased wear of the rubber sealing ring and the felt ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is an overall schematic diagram of the ball mill of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the oil scraping device of the utility model.

[0020] Figure 3 It is a schematic diagram of the position of the oil deflector ring of the utility model.

[0021] Figure 4 It is a schematic diagram of the position of the rubber sealing ring of the utility model.

[0022] In the figure, 1, oil retaining ring, 2, sliding ring, 3, sliding shoe cover, 4, oil scraping brush, 5, support rod, 6, support, 7, spring, 8, sealing ring, 9, felt, 10, pressure plate, 11, bolt, 12, annular steel plate, 13, adjusting bolt, 14, cover plate, 15, support valve. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0025] At the same time, it should be noted that: unless otherwise defined, the technical terms or scientific terms used in this article should be the usual meanings understood by people with general skills in the technical field to which the utility model belongs. The meaning of "multiple" used in the patent application specification and claims of this utility model is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front end", "rear end", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of implementation of the utility model without substantial changes in the technical content.

[0026] The present invention is further described in detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0027] The utility model discloses an oil leakage prevention structure for a ball mill sliding shoe bearing. Figure 1 As shown, the embodiment includes a sliding shoe cover 3, a support shoe 15, an oil retaining ring 1 and a sliding ring 2, wherein the sliding shoe cover 3 is evenly provided with a plurality of oil scraping devices on the inner side of the part not in contact with the support shoe 15. Figure 2 As shown, the oil scraping device includes two supports 6 relatively arranged on the inner side of the sliding shoe cover 3, and a support rod 5 is vertically arranged at one end of the support 6 away from the inner side of the sliding shoe cover 3, and the tail ends of the support rod 5 are connected by a horizontally arranged spring 7. The length of the support rod 5 matches the position of the oil deflector 1 of the slip ring 2, and an oil scraping brush 4 matching the position of the oil deflector 1 is arranged on the side of the head end of the support rod 5 close to the inner side of the sliding shoe cover, and the oil scraping brush 4 is used to scrape the oil on the oil deflector 1 when the sliding ring 2 rotates.

[0028] like Figure 3 As shown, the bottom of the slip ring 2 is protruding downward and provided with a contact portion, the support bearing 15 is in sliding contact with the contact portion of the slip ring 2, the bottom of the slip ring 2 is provided with an oil-swinging groove in the non-contact portion, the oil-swinging ring 1 is arranged at the bottom of the slip ring 2, and the oil-swinging ring 1 is located between the oil-swinging groove and the sliding shoe cover 3.

[0029] like Figure 4As shown, a rubber sealing ring 8 is provided outside the sliding shoe cover 3 at a position horizontally corresponding to the oil retaining ring 1, and a felt circle 9 is provided outside the rubber sealing ring 8. The top cross-section of the rubber sealing ring 8 is claw-shaped, and the claw-shaped end of the rubber sealing ring 8 forms a seal with the sliding ring 2. A pressure plate 10 and a bolt 11 are provided outside the felt circle 9, and the pressure plate 10 and the bolt 11 are used to fix the rubber sealing ring 8 and the felt circle 9 in the horizontal direction. A cover plate 14, an annular steel plate 12 and an adjusting bolt 13 are provided at the bottom of the rubber sealing ring 8, and the cover plate 14, the annular steel plate 12 and the adjusting bolt 13 are used to fix the rubber sealing ring 8 and the felt circle 9 in the vertical direction.

[0030] It should be noted that the parts not described in detail in the above embodiments are all prior art.

[0031] The above is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ball mill sliding shoe bearing oil leakage prevention structure, characterized in that: The invention comprises a sliding shoe cover (3), a support bearing (15), an oil retaining ring (1) and a sliding ring (2). The sliding shoe cover (3) is provided with a plurality of oil scraping devices evenly on the inner side of a portion not in contact with the support bearing (15). The oil scraping devices comprise two supports (6) arranged relatively on the inner side of the sliding shoe cover (3). A support rod (5) is arranged vertically and rotatably at one end of the support (6) away from the inner side of the sliding shoe cover (3). The tail ends of the support rod (5) are connected by a horizontally arranged spring (7). The length of the support rod (5) matches the position of the oil retaining ring (1) of the sliding ring (2). An oil scraping brush (4) matching the position of the oil retaining ring (1) is arranged on the side of the head end of the support rod (5) close to the inner side of the sliding shoe cover. The oil scraping brush (4) is used to scrape the oil on the oil retaining ring (1) when the sliding ring (2) rotates.

2. The ball mill sliding shoe bearing oil leakage prevention structure according to claim 1, characterized in that: The bottom of the slip ring (2) is protruding downward and is provided with a contact portion, the support shoe (15) is in sliding contact with the contact portion of the slip ring (2), the bottom of the slip ring (2) is provided with an oil throwing groove in a non-contact portion, the oil baffle ring (1) is arranged at the bottom of the slip ring (2), and the oil baffle ring (1) is located between the oil throwing groove and the sliding shoe cover (3).

3. The anti-leakage oil structure of the ball mill sliding shoe bearing according to claim 2, characterized in that: A rubber sealing ring (8) is provided outside the sliding shoe cover (3) at a position horizontally corresponding to the oil retaining ring (1), and a felt (9) circle is provided outside the rubber sealing ring (8).

4. The anti-leakage oil structure of the ball mill sliding shoe bearing according to claim 3 is characterized by: The top cross-section of the rubber sealing ring (8) is claw-shaped, and the claw-shaped end of the rubber sealing ring (8) forms a seal with the slip ring (2).

5. The anti-leakage oil structure of the ball mill sliding shoe bearing according to claim 3 is characterized by: A pressing plate (10) and bolts (11) are provided outside the felt (9) circle, and the pressing plate (10) and bolts (11) are used to fix the rubber sealing ring (8) and the felt (9) circle in a horizontal direction.

6. The ball mill sliding shoe bearing oil leakage prevention structure according to claim 3, characterized in that: A cover plate (14), an annular steel plate (12) and an adjusting bolt (13) are provided at the bottom of the rubber sealing ring (8); the cover plate (14), the annular steel plate (12) and the adjusting bolt (13) are used to fix the rubber sealing ring (8) and the felt ring (9) in a vertical direction.

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