Seal capable of being used for ventilation and heat dissipation of bearing of roller bearing seat

Abstract

The utility model discloses a seal capable of being used for bearing ventilation and heat dissipation of a roll bearing seat, which comprises a bearing body, the bearing body comprises an outer bushing and an inner bushing, and a plurality of groups of balls are uniformly arranged in the middle of the outer bushing and the inner bushing in a surrounding manner. A ventilation and heat dissipation sealing assembly is arranged in the middle of the outer bushing and the middle of the inner bushing and located over the balls. The bearing body and the sealing assembly are installed in the bearing seat together and assembled with the roller to form the notch, and after the bearing seat is connected with an oil-gas lubricating system, the notch is used for releasing the temperature generated in the operation period of the bearing body, so that the temperature in the operation period of the bearing body is reduced, and the service life of the bearing body is prolonged. The condition of high temperature or burnout caused by overhigh internal temperature due to temperature rise of the bearing body caused by long-time high-load operation of the bearing body is reduced, the working condition environment can be effectively improved, the service life can be effectively prolonged, and therefore the probability that the bearing is damaged due to temperature rise in the use period is reduced, and the replacement cost after the bearing is damaged is reduced.

Description

Technical Field

[0001] This utility model relates to the field of bearing sealing technology, specifically a seal that can be used for ventilation and heat dissipation in roll bearing housings. Background Technology

[0002] A bearing seal is a sealing ring or sealing element installed on the inside or outside of a bearing. Its main function is to prevent lubricant leakage or external impurities from entering the bearing, thereby ensuring the bearing's stable operation over a long period. Common seal types include contact seals, non-contact seals, and labyrinth seals. Different types of bearing seals have different characteristics and different application scenarios.

[0003] As the online use time of bearings increases, the operating temperature of the bearings also increases. After long-term operation, it is necessary to control the operating temperature of the bearings within a relatively low range. Excessive temperature can cause high-temperature burns, deformation, weakening of the bearing body surface strength, and even burning of the bearing. In addition, high temperature can reduce the effect of oil lubrication. Utility Model Content

[0004] The purpose of this invention is to address the problem that as the operating time of bearings increases, the operating temperature of the bearings also increases. After long-term operation, it is necessary to control the operating temperature of the bearings within a relatively low range. However, excessively high temperatures can cause high-temperature burns, deformation, weakening of the bearing body surface strength, and even bearing burnout. Furthermore, high temperatures can reduce the effectiveness of oil lubrication. This invention provides a seal that can be used for ventilation and heat dissipation in roll bearing housings.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a seal for ventilation and heat dissipation of a roll bearing housing, comprising a bearing body, the bearing body comprising an outer bushing and an inner bushing, wherein multiple sets of balls are uniformly arranged around the middle of the outer bushing and the inner bushing, and a ventilation and heat dissipation sealing assembly is provided in the middle of the outer bushing and the inner bushing and directly above the balls, the sealing assembly comprising a sealing ring disposed in the middle of the inner bushing and the outer bushing, wherein one end of the sealing ring is uniformly provided with slots to facilitate heat dissipation and ventilation.

[0006] As a further improvement of this utility model: a blocking component for blocking external dust is provided on the outer periphery of the sealing ring near the groove opening. The blocking component includes a connecting strip fixedly installed with the sealing ring, and a dust-proof membrane adapted to the groove opening is fixedly installed at one end of the connecting strip.

[0007] As a further embodiment of this utility model: a first sealing lip is fixedly installed on the outer periphery of the sealing ring and fixedly installed on the outer bushing and the inner bushing, and a first sealing port is opened on the inner side of both the outer bushing and the inner bushing to be sealed and connected with the first sealing lip.

[0008] As a further improvement of this utility model, a second sealing lip that is sealed and connected to the first sealing port is fixedly installed on the outer periphery of the connecting strip.

[0009] As a further embodiment of this utility model: one end of the connecting strip is fixedly provided with a third sealing lip that is sealed and connected to the sealing ring, and the third sealing lip is symmetrically fixed at both ends of the connecting strip. One end of the sealing ring and the side near the groove are symmetrically provided with a second sealing opening that is adapted to the third sealing lip.

[0010] As a further improvement of this utility model, the opening size of the groove is three millimeters.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the bearing body and sealing assembly are installed together in the bearing housing, and after being assembled with the roll, a groove is formed. After the bearing housing is connected to the oil-air lubrication system, the temperature generated by the bearing body during operation is released through this groove, thereby reducing the temperature of the bearing body during operation. This reduces the risk of the bearing body overheating due to long-term high-load operation, which could lead to excessive internal temperature and cause overheating or burnout. It can effectively improve the working environment, extend the service life, and reduce the probability of bearing damage due to overheating during use, thus reducing the cost of replacement after damage.

[0013] In this invention, the connecting strip and the dustproof membrane are sealed together on one side of the groove by the second sealing port and the third sealing lip. The dustproof membrane is a polytetrafluoroethylene membrane with a porosity of over 85% and 1.4 billion micropores per square centimeter. It can prevent external pollutants from entering the interior of the bearing body while ensuring ventilation, thereby reducing the entry of external dust, moisture and other pollutants into the interior of the bearing body, thus reducing the wear and corrosion of the bearing body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the unfolded structure of the bearing body and the sealing ring in this utility model;

[0016] Figure 3 This is a utility model Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0017] Figure 4 This is a partial structural diagram of the connecting strip and dustproof membrane in this utility model.

[0018] In the figure: 1. Bearing body; 11. Outer bushing; 12. Inner bushing; 13. Ball; 2. Sealing assembly; 21. Sealing ring; 22. Groove; 23. First sealing lip; 24. First sealing port; 3. Blocking assembly; 31. Connecting strip; 32. Dustproof membrane; 33. Second sealing lip; 34. Second sealing port; 35. Third sealing lip. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0021] Reference Figure 1 and Figure 4 In this embodiment of the present invention, a seal for ventilation and heat dissipation of a roll bearing housing includes a bearing body 1. The bearing body 1 includes an outer bushing 11 and an inner bushing 12. Multiple sets of balls 13 are evenly arranged around the middle of the outer bushing 11 and the inner bushing 12. A ventilation and heat dissipation sealing component 2 is arranged in the middle of the outer bushing 11 and the inner bushing 12 and directly above the balls 13. The sealing component 2 includes a sealing ring 21 arranged in the middle of the inner bushing 12 and the outer bushing 11. One end of the sealing ring 21 is evenly provided with a groove 22 to facilitate heat dissipation and ventilation. The opening size of the groove 22 is three millimeters.

[0022] The above solution utilizes the slot 22 to release the temperature generated during the operation of the bearing body 1, thereby reducing the operating temperature of the bearing body 1. Furthermore, the positive pressure of the oil-air lubrication system can reduce the amount of emulsion entering the bearing body 1, thus reducing the occurrence of oil deterioration. It also facilitates daily inspection of the ventilation status of each circuit in the oil-air lubrication system in the bearing housing, reducing the risk of overheating of the bearing body 1 due to prolonged high-load operation, which could lead to excessive internal temperature and potentially cause overheating or burnout.

[0023] Reference Figure 1 and Figure 4 A blocking component 3 is provided on the outer periphery of the sealing ring 21 near the groove 22 to block external dust. The blocking component 3 includes a connecting strip 31 fixedly installed with the sealing ring 21. A dustproof membrane 32 adapted to the groove 22 is fixedly installed at one end of the connecting strip 31.

[0024] The above solution is adopted: the dustproof membrane 32 is a polytetrafluoroethylene (PTFE) membrane. PTFE membrane has a fibrous microporous structure with a porosity of over 85%, containing 1.4 billion micropores per square centimeter, with a pore size range of 0.02μm-15μm. The surface can have over a billion micropores per square centimeter. The diameter of each micropore (0.1μm-0.5μm) is hundreds of times smaller than the diameter of a water molecule and tens of thousands of times larger than a water vapor molecule. It has the characteristics of being breathable but not water-permeable, having high air permeability, being flame-retardant, resistant to high temperatures, resistant to strong acids and alkalis, and non-toxic. It can be used for a long time at a high temperature of 260℃.

[0025] Reference Figure 1 and Figure 4 The outer periphery of the sealing ring 21 is fixedly installed with a first sealing lip 23 that is fixedly installed with the outer bushing 11 and the inner bushing 12. The inner sides of the outer bushing 11 and the inner bushing 12 are provided with a first sealing port 24 that is sealed and connected with the first sealing lip 23. The outer periphery of the connecting strip 31 is fixedly installed with a second sealing lip 33 that is sealed and connected with the first sealing port 24. One end of the connecting strip 31 is fixedly provided with a third sealing lip 35 that is sealed and connected with the sealing ring 21. The third sealing lip 35 is symmetrically fixed at both ends of the connecting strip 31. One end of the sealing ring 21 and the side near the groove 22 are symmetrically provided with a second sealing port 34 that is adapted to the third sealing lip 35.

[0026] Using the above scheme: the connecting strip 31 is made of high-temperature nylon material. High-temperature nylon is a polyamide material with a high melting point and glass transition temperature. Its heat distortion temperature can reach about 280-300℃. It is a relatively soft material with good toughness and machinability. High-temperature nylon also has good mechanical properties, such as high strength and modulus, and can withstand a certain load. The sealing ring 21 can be installed and replaced with the bearing body 1 through the first sealing port 24 and the first sealing lip 23.

[0027] The working principle of this invention is as follows: By installing the bearing body 1 and the sealing assembly 2 together into the bearing housing, and assembling them with the rolls to form a groove 22, the bearing housing is connected to the oil-air lubrication system. This groove 22 allows the heat generated during the operation of the bearing body 1 to be released, thereby reducing the operating temperature of the bearing body 1. Furthermore, the positive pressure of the oil-air lubrication system reduces the entry of emulsion into the bearing body 1, minimizing oil deterioration. It also facilitates routine checks of the ventilation conditions of each circuit in the oil-air lubrication system within the bearing housing, reducing the risk of excessively high internal temperatures caused by prolonged high-load operation of the bearing body 1. This effectively improves the working environment and extends the service life of the bearing in case of high temperature or burnout, thereby reducing the probability of bearing damage due to temperature rise during use and reducing the cost of replacement after damage. At the same time, the connecting strip 31 and the dustproof membrane 32 are sealed and connected to one side of the groove 22 through the second sealing port 34 and the third sealing lip 35. The dustproof membrane 32 is a polytetrafluoroethylene membrane with a porosity of more than 85% and 1.4 billion micropores per square centimeter. It can prevent external pollutants from entering the interior of the bearing body 1 while ensuring ventilation, thereby reducing the entry of external dust, moisture and other pollutants into the interior of the bearing body 1, thereby reducing the wear and corrosion of the bearing body 1.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A seal for ventilation and heat dissipation in roll bearing housings, characterized in that, The bearing body (1) includes an outer bushing (11) and an inner bushing (12). Multiple sets of balls (13) are evenly arranged around the middle of the outer bushing (11) and the inner bushing (12). A breathable and heat-dissipating sealing assembly (2) is provided in the middle of the outer bushing (11) and the inner bushing (12) and directly above the balls (13). The sealing assembly (2) includes a sealing ring (21) disposed in the middle of the inner bushing (12) and the outer bushing (11). One end of the sealing ring (21) is evenly provided with a slot (22) to facilitate heat dissipation and ventilation.

2. The seal for ventilation and heat dissipation of a roll bearing housing as described in claim 1, characterized in that, A blocking component (3) for blocking external dust is provided on the outer periphery of the sealing ring (21) near the groove (22). The blocking component (3) includes a connecting strip (31) fixedly installed with the sealing ring (21). A dustproof membrane (32) adapted to the groove (22) is fixedly installed at one end of the connecting strip (31).

3. A seal for ventilation and heat dissipation in roll bearing housings according to claim 1, characterized in that, The sealing ring (21) has a first sealing lip (23) fixedly installed on its outer periphery and fixedly installed with the outer bushing (11) and the inner bushing (12), and the inner side of the outer bushing (11) and the inner bushing (12) are provided with a first sealing port (24) that is sealed and connected with the first sealing lip (23).

4. A seal for ventilation and heat dissipation in roll bearing housings according to claim 2, characterized in that, The outer periphery of the connecting strip (31) is fixedly fitted with a second sealing lip (33) that is sealed to the first sealing port (24).

5. A seal for ventilation and heat dissipation in roll bearing housings according to claim 2, characterized in that, One end of the connecting strip (31) is fixed with a third sealing lip (35) that is sealed to the sealing ring (21), and the third sealing lip (35) is symmetrically fixed at both ends of the connecting strip (31). One end of the sealing ring (21) and the side near the groove (22) are symmetrically provided with a second sealing port (34) that is adapted to the third sealing lip (35).

6. A seal for ventilation and heat dissipation in a roll bearing housing according to claim 1, characterized in that, The opening size of the slot (22) is three millimeters.

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