Lubricating and sealing structure for large rotary component

Abstract

The utility model relates to the technical field of large rotary components, and provides a lubricating and sealing structure for a large rotary component. The sealing cover is arranged outside the gear ring in a covering mode, and an oil seal space is formed between the interior of the sealing cover and the gear ring; the oil sealing piece is arranged on the sealing cover, and the oil sealing piece abuts against the bottom face of the side wall of the gear ring in a sliding mode; the multiple oil baffle rings are arranged on the two sides of the gear ring correspondingly, and the oil baffle rings are used for reducing the oil amount of lubricating oil flowing to the oil seal part. According to the technical scheme, the problem of lubricating oil leakage of a large rotary component in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of large rotary components, and in particular to a lubricating sealing structure for large rotary components. Background Art

[0002] Large rotating components, such as the ring gear in a ball mill, play a vital role in industrial production. These components require excellent lubrication to ensure efficient and stable operation. Lubrication systems effectively reduce friction between components and extend their service life. To prevent lubrication leakage, lubrication systems are typically equipped with oil seals. Oil seals are designed to form an effective sealing barrier between the ring gear and other associated components, ensuring that the lubricant or grease remains within the component.

[0003] However, in actual operation, serious problems arise, especially when large rotating components such as the ring gear are in long-term rotation. The continuous rotation of the ring gear inevitably causes friction with the oil seal. Over time and with increased operating time, this friction causes wear between the ring gear and the oil seal. Wear damages the oil seal's inherent sealing properties, creating gaps between the ring gear and the oil seal. These gaps directly lead to oil leakage. This oil leakage not only wastes lubricant and increases production costs, but the leaked lubricant can also pollute the working environment and adversely affect the normal operation of surrounding equipment. Furthermore, a reduction in the amount of lubricant can lead to insufficient lubrication of the ring gear, further exacerbating wear on the ring gear, shortening its service life, and even causing equipment failure, impacting the continuity and stability of the entire production process. Therefore, how to effectively reduce the oil leakage caused by wear between the ring gear and the oil seal during the long-term rotation of large rotating components has become a pressing technical challenge. Utility Model Content

[0004] The utility model provides a lubricating sealing structure for a large rotary component, which solves the problem of lubricating oil leakage in the large rotary component in the related art.

[0005] The technical solution of the utility model is as follows:

[0006] A lubricating sealing structure for large rotating parts, comprising:

[0007] Ring gear;

[0008] A sealing cover is provided outside the gear ring, and an oil seal space is formed between the inside of the sealing cover and the gear ring;

[0009] An oil seal is provided on the sealing cover, and the oil seal is slidably abutted against the bottom surface of the side wall of the gear ring;

[0010] There are several oil deflector rings, which are respectively arranged on both sides of the gear ring. The oil deflector rings are used to reduce the amount of lubricating oil flowing to the oil seal.

[0011] Optionally, the oil deflector ring includes:

[0012] There are a plurality of baffles, and the ends of the baffles are spliced together to form the oil retaining ring. One end of each baffle has an extension part and the other end has a slot. The extension parts and the slots of adjacent baffles are snap-connected.

[0013] Optionally, the baffle is arc-shaped or elongated, and is a prefabricated part.

[0014] Optionally, the longitudinal section of the baffle is U-shaped or concave-shaped, and the baffle has an opening, which faces the inner top of the sealing cover.

[0015] Optionally, one end of the baffle has a first connection hole, the other end of the baffle has a protrusion, the protrusion has a second connection hole, and after the adjacent baffles are connected end to end, the first connection hole and the second connection hole correspond to each other, and further comprising:

[0016] A pin is sequentially passed through the first connecting hole and the second connecting hole, and the pin connects adjacent blocking bars.

[0017] Optionally, the top of the baffle is flush with or higher than the top of the gear ring.

[0018] Optionally, the extension portion is provided with a friction strip, the clamping slot is provided with an anti-slip groove, and the friction strip is clamped with the anti-slip groove.

[0019] Optionally, the retaining bars are welded to both sides of the outside of the gear ring, and there is a distance between the retaining bars and the teeth of the gear ring.

[0020] The working principle and beneficial effects of the utility model are as follows:

[0021] The lubricating sealing structure for large rotating parts in the utility model covers the gear ring with a sealing cover to form an oil sealing space, the oil seal is in sliding contact with the bottom surface of the gear ring side wall, and oil retaining rings are provided on both sides of the gear ring to reduce the amount of oil flowing to the oil seal, which effectively reduces the risk of the oil seal being damaged by excessive impact and immersion of the lubricating oil, extends the service life of the oil seal, improves the sealing effect, reduces lubricating oil leakage, avoids waste of lubricating medium and increased production costs, and at the same time prevents lubricating oil from polluting the working environment, ensures the normal operation of peripheral equipment, reduces downtime caused by oil cleaning and equipment failure repair, improves the continuity and stability of the production process, and can also ensure that the gear ring is adequately lubricated, reduces gear ring wear, and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above characteristics, technical features, advantages and their implementation manners of the present utility model will be further described below in a clear and understandable manner in combination with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the external structure of the gear ring and the sealing cover of the present utility model;

[0024] Figure 2 It is a schematic diagram of the internal structure of the gear ring and the sealing cover of the present utility model;

[0025] Figure 3 It is a schematic diagram of the positional relationship between the gear ring and the oil baffle ring of the present utility model;

[0026] Figure 4 It is a schematic diagram of the overall structure of the oil baffle ring of the present utility model;

[0027] Figure 5 It is a schematic diagram of the first perspective structure of the retaining bar of the present utility model;

[0028] Figure 6 It is a schematic diagram of the second perspective structure of the retaining bar of the present utility model.

[0029] In the figure: 1, gear ring; 2, sealing cover; 201, oil seal space; 3, oil baffle ring; 31, retaining bar; 301, opening; 311, extension part; 312, friction strip; 313, first connection hole; 314, protruding part; 315, second connection hole; 316, clamping groove; 4, oil seal part; 5, pin. Specific embodiments

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, and other embodiments can be obtained.

[0031] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0032] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0034] Referring to Figures 1 to 6 , which is an embodiment of this utility model, a lubrication and sealing structure for a large rotary component is proposed, including: a gear ring 1; a sealing cover 2, which is sleeved outside the gear ring 1, and an oil seal space 201 is formed between the inside of the sealing cover 2 and the gear ring 1; an oil seal 4, which is arranged on the sealing cover 2, and the oil seal 4 slidably abuts against the bottom surface of the side wall of the gear ring 1; a number of oil baffle rings 3, which are respectively arranged on both sides of the gear ring 1, and the oil baffle rings 3 are used to reduce the amount of lubricating oil flowing to the oil seal 4.

[0035] In the above solution, when a large rotary component (such as the gear ring 1 of a ball mill) is in operation, the lubricating oil normally plays a lubricating role at the gear ring 1 and related lubricating parts. The sealing cover 2 covers the gear ring 1 and forms an oil seal space 201 inside it, which plays a preliminary role in accommodating and restricting the lubricating oil. The oil seal 4 is in sliding contact with the bottom surface of the side wall of the gear ring 1. As the gear ring 1 rotates, the oil seal 4 continuously prevents the lubricating oil from leaking out of the oil seal space 201. At the same time, the oil baffle ring 3 functions on both sides of the gear ring 1. When the lubricating oil has a tendency to flow towards the oil seal 4 under the action of centrifugal force or other factors, the oil baffle ring 3 reduces this part of the oil volume, further reducing the possibility of the oil seal 4 being damaged due to excessive impact and immersion of the lubricating oil. The gear ring 1, as a key part of the large rotary component, has a normal tooth structure for functions such as transmission. The sealing cover 2 is a cover structure, whose shape is adapted to the gear ring 1, can completely cover the gear ring 1, and the size and shape of the oil seal space 201 between the sealing cover 2 and the gear ring 1 are reasonable, which can accommodate a certain amount of lubricating oil to ensure lubrication and will not cause disordered flow of the lubricating oil due to too large a space. The oil seal 4 is installed on the sealing cover 2, and its material and shape can ensure good sliding contact with the bottom surface of the side wall of the gear ring 1, and has certain elasticity and wear resistance. The oil baffle rings 3 are distributed on both sides of the gear ring 1, and the number is two, which are respectively arranged on both sides of the gear ring 1. The oil baffle rings 3 can effectively block the flow of the lubricating oil towards the oil seal 4. The oil leakage phenomenon is effectively reduced. By reducing the oil volume flowing towards the oil seal 4 through the oil baffle rings 3, the risk of the oil seal 4 being damaged due to excessive impact of the lubricating oil is reduced, thereby prolonging the service life of the oil seal 4, improving the sealing effect, reducing the leakage of the lubricating oil, avoiding waste of the lubricating medium, and reducing the production cost. Improve the working environment. Reducing oil leakage can prevent the lubricating oil from polluting the working environment, ensure the normal operation of surrounding equipment, reduce the downtime caused by oil cleaning and equipment failure maintenance, and improve the continuity and stability of the entire production process. Better protect the gear ring 1. Ensure the stability of the lubricating oil volume, avoid insufficient lubrication of the gear ring 1 due to oil leakage, reduce the wear of the gear ring 1, and prolong its service life.

[0036] Further, the oil baffle ring 3 includes: a plurality of baffle strips 31. The plurality of baffle strips 31 are spliced end to end to form the oil baffle ring 3. One end of each baffle strip 31 has an extension part 311, and the other end has a card slot 316. The extension parts 311 and the card slots 316 of adjacent baffle strips 31 are clamped.

[0037] In the above solution, when the device is running, the lubricating oil flows around the gear ring 1. The oil retaining ring 3 is formed by splicing several retaining bars 31. During the process of blocking the lubricating oil, each retaining bar 31 plays a role. The extension part 311 at one end is clamped with the clamping groove 316 of the adjacent retaining bar 31. This connection method makes the oil retaining ring 3 form a complete annular structure, stably located on both sides of the gear ring 1, and effectively intercepts the lubricating oil from flowing towards the oil seal 4. The retaining bar 31 is the basic component unit of the oil retaining ring 3, and its quantity is determined according to the size of the gear ring 1 and actual needs. Each retaining bar 31 has an extension part 311 and a clamping groove 316. The shape and size of the extension part 311 are precisely matched with the clamping groove 316 to ensure the firmness and stability of the clamping connection, making the overall structure of the oil retaining ring 3 stable and not easy to loosen under the long-term impact of the lubricating oil and the vibration of the device. It is convenient for installation and disassembly. The splicing structure of the retaining bar 31 makes the oil retaining ring 3 more convenient for installation and disassembly. It can be assembled or repaired on-site according to the actual situation without complex overall installation processes, improving work efficiency. It can be flexibly adjusted. If a certain retaining bar 31 is damaged, it can be replaced separately, reducing the maintenance cost. At the same time, this structure also facilitates a certain degree of adjustment of the size and shape of the oil retaining ring 3 according to the different sizes of the gear ring 1 and actual working conditions.

[0038] Further, the retaining bar 31 is arc-shaped or strip-shaped, and the retaining bar 31 is a prefabricated part.

[0039] In the above solution, during operation, the arc-shaped or strip-shaped prefabricated retaining bars 31 are spliced into the oil retaining ring 3. When the lubricating oil flows near the gear ring 1, the oil retaining ring 3 effectively blocks the lubricating oil from flowing towards the oil seal 4 according to its shape and position. The arc-shaped retaining bar 31 can better fit the circumferential shape of the gear ring 1 and has a better blocking effect on the lubricating oil in the circumferential direction; the strip-shaped retaining bar 31 can form a continuous blocking line in the linear direction, enhancing the overall oil blocking ability. The shape of the retaining bar 31 is arc-shaped or strip-shaped, and is selected or combined according to the geometric shape of the gear ring 1 and the characteristics of the lubricating oil flow. The prefabricated retaining bar 31 can ensure dimensional accuracy and quality stability during the production process, and the material and process selection can be optimized according to the specific working environment requirements, such as selecting wear-resistant and corrosion-resistant materials to improve the service life of the retaining bar 31. Improve the oil blocking efficiency. The arc-shaped and strip-shaped designs enable the oil retaining ring 3 to better adapt to the flow pattern of the lubricating oil around the gear ring 1, more effectively block the lubricating oil from flowing towards the oil seal 4, and reduce the risk of oil leakage. Optimize production and installation. The form of the prefabricated part is convenient for industrial production. High-quality retaining bars 31 can be mass-produced and directly used during installation, reducing the workload of on-site processing and improving the construction speed and quality.

[0040] Further, the longitudinal section of the retaining bar 31 is U-shaped or concave-shaped, and the retaining bar 31 has an opening 301, and the opening 301 faces the inner top of the sealing cover 2.

[0041] In the above solution, when the device is running, the lubricating oil moves around the gear ring 1. The longitudinal section of the retaining strip 31 is U-shaped or concave-shaped, and its opening 301 faces the inner top of the sealing cover 2. When the lubricating oil splashes upward under the action of centrifugal force or the like, the opening 301 can effectively capture and hold part of the lubricating oil, preventing it from flowing past the retaining strip 31 to the oil seal 4, and achieving a good oil retaining effect. The U-shaped or concave-shaped structure of the retaining strip 31 holds a certain amount of lubricating oil. The direction of the opening 301 is upward, which is adapted to the splashing direction of the lubricating oil during operation, and can make the most of its shape characteristics to intercept the lubricating oil, enhancing the oil retaining effect. The special longitudinal section shape and the direction of the opening 301 endow the retaining strip 31 with unique advantages in blocking the upward-splashing lubricating oil, reducing the possibility of the lubricating oil breaking through the oil retaining ring 3, further ensuring that the oil seal 4 is not affected by excessive lubricating oil, and reducing the probability of oil leakage. Optimize the distribution of the lubricating oil. The lubricating oil contained in the retaining strip 31 can be redistributed to a certain extent, and part of the lubricating oil may flow back to the lubrication area of the gear ring 1 under the action of gravity, improving the utilization efficiency of the lubricating oil.

[0042] Further, one end of the retaining strip 31 has a first connection hole 313, the other end of the retaining strip 31 has a protruding portion 314, and the protruding portion 314 has a second connection hole 315. After the adjacent retaining strips 31 are connected end to end, the first connection hole 313 and the second connection hole 315 correspond to each other. It further includes: a pin 5, which successively passes through the first connection hole 313 and the second connection hole 315, and the pin 5 connects the adjacent retaining strips 31.

[0043] In the above solution, during the operation of the device, the adjacent retaining strips 31 are connected end to end through the first connection hole 313 at one end, the second connection hole 315 on the protruding portion 314 at the other end, and the pin 5. This connection method makes the oil retaining ring 3 form a stable ring structure. During the process of blocking the flow of the lubricating oil to the oil seal 4, the pin 5 ensures the reliability of the connection between the retaining strips 31, enabling the oil retaining ring 3 to withstand the impact of the lubricating oil and the vibration generated during the operation of the device. The first connection hole 313, the second connection hole 315, and the pin constitutes a simple and effective connection system. The size and position of the connection holes are precisely matched with the pin 5 to ensure the tightness of the connection. The pin 5 can be made of a material with certain strength and wear resistance, such as a metal material, to adapt to the long-term working environment.

[0044] Further, the top of the retaining strip 31 is flush with the top of the gear ring 1 or higher than the top of the gear ring 1.

[0045] In the above solution, when the large rotary component is running, the lubricating oil is distributed around the gear ring 1. The top of the retaining strip 31 is flush with or higher than the top of the gear ring 1, which can effectively prevent the lubricating oil from overflowing from the top of the gear ring 1 and flowing towards the oil seal 4. Whether the lubricating oil is flowing during normal lubrication or splashing under the influence of factors such as equipment vibration, the retaining strip 31 can form a reliable blocking line at the top. It ensures the effective blocking of the lubricating oil in the vertical direction and prevents the lubricating oil from bypassing the retaining strip 31 from above. The height of the retaining strip 31 is set considering the possible flow height of the lubricating oil in the gear ring 1 under different working conditions. By ensuring the height position of the top of the retaining strip 31, the effective interception of the lubricating oil in the direction of the top of the gear ring 1 is achieved. Combined with the oil blocking function of the retaining strip 31 in other directions, an all-round oil blocking protection is formed, minimizing the amount of oil flowing towards the oil seal 4 and reducing the risk of oil leakage.

[0046] Further, the extension portion 311 is provided with a friction strip 312, and the card slot 316 is provided with an anti-slip groove, and the friction strip 312 is engaged with the anti-slip groove.

[0047] In the above solution, when the equipment is running, the retaining strips 31 are engaged with each other through the extension portion 311 and the card slot 316. The friction strip 312 on the extension portion 311 is tightly engaged with the anti-slip groove in the card slot 316. In the case of lubricating oil flow and equipment vibration, this engagement method ensures the structural stability of the oil blocking ring 3, prevents loosening between the retaining strips 31, and ensures that the oil blocking ring 3 continuously and effectively blocks the lubricating oil from flowing towards the oil seal 4. The design of the friction strip 312 and the anti-slip groove increases the friction force between the extension portion 311 and the card slot 316. The friction strip 312 can be made of a material with a high friction coefficient, such as rubber or a metal strip with special texture, and its shape and size are perfectly matched with the anti-slip groove to ensure the firmness of the engagement. Enhance the structural stability. The cooperation of the friction strip 312 and the anti-slip groove effectively prevents the retaining strip 31 from loosening due to factors such as vibration during long-term operation, improves the overall stability of the oil blocking ring 3, ensures its long-term stable oil blocking effect, and reduces the potential oil leakage hazard caused by the loosening of the oil blocking ring 3.

[0048] Further, the retaining strip 31 is welded to both sides of the outside of the gear ring 1, and there is a spacing between the retaining strip 31 and the teeth of the gear ring 1.

[0049] In the above solution, when the large rotary component (such as the girth gear 1 of the ball mill) is working, the retaining bars 31 welded on both outer sides of the girth gear 1 stably play the role of retaining oil. There is a certain distance between the retaining bars 31 and the girth gear 1, which neither affects the normal rotation of the girth gear 1 and the function of the teeth, nor can effectively block the flow of lubricating oil to the oil seal 4 when the lubricating oil flows. The welded connection method ensures the firmness of the retaining bars 31 during the operation of the equipment. The retaining bars 31 are connected to the girth gear 1 by welding, and the welding process ensures the strength of the connection. On the premise of ensuring that the transmission function of the girth gear 1 is not interfered, it provides a suitable space for the flow and oil retention of the lubricating oil. The connection is firm and reliable. The welded connection makes the retaining bars 31 and the girth gear 1 form an integral body, which can withstand various forces and vibrations during the operation of the equipment, ensure the long-term stable operation of the oil retaining ring 3, and reduce the oil leakage problem caused by loose connection. Optimize space utilization. The reasonable spacing design not only ensures the normal function of the girth gear 1, but also enables the retaining bars 31 to effectively play the role of retaining oil, improves the utilization efficiency of the internal space of the equipment, and at the same time ensures the normal operation of the lubrication and sealing systems.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A lubricating and sealing structure for large rotary components, characterized in that, Comprising: Gear ring (1); Sealing cover (2), covering the outside of the gear ring (1), an oil seal space (201) being formed between the inside of the sealing cover (2) and the gear ring (1); Oil seal member (4), arranged on the sealing cover (2), the oil seal member (4) slidingly abutting against the bottom surface of the side wall of the gear ring (1); Oil retaining rings (3), having a plurality of them, the plurality of oil retaining rings (3) being respectively arranged on both sides of the gear ring (1), the oil retaining rings (3) being used for reducing the amount of lubricating oil flowing to the oil seal member (4).

2. The lubrication and sealing structure for a large rotary component according to claim 1, wherein The oil retaining ring (3) comprises: Blocking strips (31), having a plurality of them, the plurality of blocking strips (31) being joined end to end to form the oil retaining ring (3), one end of each blocking strip (31) having an extension part (311), the other end having a clamping groove (316), the extension part (311) and the clamping groove (316) of adjacent blocking strips (31) being clamped together.

3. The lubrication and sealing structure for a large rotating component according to claim 2, characterized in that, The blocking strip (31) is arc-shaped or strip-shaped, and the blocking strip (31) is a prefabricated part.

4. A lubrication and sealing structure for a large rotary component according to claim 2, characterized in that, The longitudinal section of the blocking strip (31) is U-shaped or concave-shaped, the blocking strip (31) having an opening (301), the opening (301) facing the inner top of the sealing cover (2).

5. A lubrication and sealing structure for a large rotary component according to claim 2, characterized in that, One end of the blocking strip (31) has a first connection hole (313), the other end of the blocking strip (31) has a protruding part (314), the protruding part (314) having a second connection hole (315), after adjacent blocking strips (31) are connected end to end, the first connection hole (313) and the second connection hole (315) corresponding to each other, further comprising: A pin (5), sequentially passing through the first connection hole (313) and the second connection hole (315), the pin (5) connecting adjacent blocking strips (31).

6. The lubrication and sealing structure for a large rotary component according to claim 2, characterized in that The top of the blocking strip (31) is flush with the top of the gear ring (1) or higher than the top of the gear ring (1).

7. A lubrication and sealing structure for a large rotary component according to claim 2, characterized in that, The extension part (311) has a friction strip (312), the clamping groove (316) having an anti-slip groove, the friction strip (312) being clamped with the anti-slip groove.

8. A lubricating and sealing structure for a large rotary component according to claim 2, characterized in that, The blocking strip (31) is welded to the outside of both sides of the gear ring (1), there being a spacing between the blocking strip (31) and the teeth of the gear ring (1).

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