Waterproof device for bearing

Abstract

The utility model discloses a waterproof device for a bearing. The waterproof device comprises an end plate, a rotating shaft and an oil filling pipe, the two surfaces of the end plate penetrate through each other and are respectively provided with an upper boss and a lower boss which are hollow inside, and the two bosses surround the penetrated part of the end plate and are respectively provided with an upper through hole and a lower through hole which are communicated with the inside of the end plate. The rotating shaft penetrates through the penetrating holes and is sleeved with a first oil seal and a second oil seal, the two oil seals are arranged in the two bosses respectively, the separated space forms an oil storage cavity, and the oil storage cavity is filled with sealing oil. The oil filling pipe is communicated with the oil storage cavity; therefore, during application, liquid flowing downwards cannot be directly contacted with the oil seal through the surface of the end plate, but can be contacted with the oil seal only by bypassing the upper boss, so that the damage of the flowing liquid to the oil seal is reduced, and even if the liquid passes through the oil seal, the liquid is still blocked by the sealing oil and cannot leak out through the second oil seal; therefore, the problem that the bearing is damaged due to the fact that an existing bearing waterproof device is prone to aging is practically solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing waterproofing, in particular to a bearing waterproofing device. Background Art

[0002] In the existing bearing waterproof device, its end plate will be arranged at the lower part of the equipment, and a hole will be provided on the end plate to install the rotating shaft. An oil seal will be provided on the hole and sleeved outside the rotating shaft to achieve the function of preventing liquid leakage; but with the passage of time, the oil seal is prone to aging and damage, resulting in leakage, especially when the leakage enters the bearing, it is easy to cause damage to the bearing, so how to solve this problem has become the research focus of technicians in this field. Utility Model Content

[0003] The utility model aims to provide a bearing waterproof device to solve the problem that the existing bearing waterproof device is easily aged and damaged, resulting in leakage and damage to the bearing.

[0004] In order to solve the above technical problems, the utility model provides a bearing waterproof device, including an end plate, a rotating shaft and an oil filling pipe; the two opposite surfaces of the end plate are penetrated; one surface of the end plate is provided with an upper hollow internal boss, the upper boss surrounds the part of the end plate penetrated, and the upper boss is provided with an upper through hole communicated with the interior thereof; the other surface of the end plate is provided with a lower hollow internal boss, the lower boss surrounds the part of the end plate penetrated, and the lower boss is provided with a lower through hole communicated with the interior thereof; the part of the end plate penetrated is communicated with the upper boss and the internal space of the lower boss; the rotating shaft passes through the upper through hole, the end plate and the lower through hole, and the rotating shaft outer sleeve is provided with a first oil seal and a second oil seal, the first oil seal is arranged in the internal hollow space of the upper boss, the second oil seal is arranged in the internal hollow space of the lower boss, and the space separating the first oil seal and the second oil seal from each other forms an oil storage chamber; the oil filling pipe is communicated with the oil storage chamber.

[0005] In one of the embodiments, the peripheral wall of the upper boss is provided with an annular groove arranged around the peripheral wall, and the annular groove is provided at the connection between the upper boss and the end plate.

[0006] In one of the embodiments, the depth dimension of the annular groove increases in the direction from the upper boss toward the end plate.

[0007] In one embodiment, the radial dimension of the first oil seal is larger than the aperture of the upper through hole, and the upper through hole is placed within the covering range of the first oil seal.

[0008] In one embodiment, the radial dimension of the second oil seal is larger than the aperture of the lower through hole, and the lower through hole is placed within the covering range of the second oil seal.

[0009] In one of the embodiments, a portion of the rotating shaft passing through the lower through hole is covered with a third oil seal and a bearing, and the third oil seal is placed between the lower boss and the bearing.

[0010] In one of the embodiments, the third oil seal and the lower boss are arranged separately from each other.

[0011] In one embodiment, the oil storage cavity is filled with sealing oil.

[0012] The beneficial effects of the utility model are as follows:

[0013] Since an upper boss is provided on one surface of the end plate, when it is used, it is only necessary to set the portion provided with the upper boss in the space where the equipment contacts the liquid, and the liquid flowing downward cannot directly contact the oil seal through the surface of the end plate, but needs to bypass the upper boss to contact the oil seal, thereby reducing the damage of the flowing liquid to the oil seal; and even if the liquid passes through the oil seal, since the space separating the first oil seal and the second oil seal forms an oil storage chamber, and the oil storage chamber is filled with sealing oil, the liquid will still be blocked by the sealing oil and cannot leak out through the second oil seal, that is, cannot contact the bearing, thereby effectively solving the problem that the existing bearing waterproof device is easily aged and damaged, resulting in leakage, and damaging the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure.

[0017] The reference numerals are as follows:

[0018] 10. end plate; 11. upper boss; 12. through hole; 13. oil storage cavity; 14. annular groove; 15. lower boss; 16. lower through hole;

[0019] 20. Rotating shaft;

[0020] 30. Oil filling pipe;

[0021] 41. First oil seal; 42. Second oil seal; 43. Third oil seal;

[0022] 50. Bearings;. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] The utility model provides a bearing waterproof device, which can be applied to dehydrators, conveying equipment with relatively wet materials, equipment with high waterproof requirements, etc. Figure 1 and Figure 2 As shown, it includes an end plate 10, a rotating shaft 20 and an oil injection pipe 30; the two opposite surfaces of the end plate 10 are penetrated, and one surface of the end plate 10 is provided with an upper boss 11 with a hollow interior, the upper boss 11 surrounds the portion of the end plate 10 penetrated, and the upper boss 11 is provided with an upper through hole 12 communicated with the interior thereof; the other surface of the end plate 10 is provided with a lower boss 15 with a hollow interior, the lower boss 15 surrounds the portion of the end plate 10 penetrated, and the lower boss 15 is provided with a lower through hole 16 communicated with the interior thereof; the portion of the end plate 10 penetrated and the upper boss 11, the upper boss 11 and the lower boss 12 are provided with a lower through hole 16 communicated with the interior thereof and the internal space of the lower boss 15; the rotating shaft 20 passes through the upper through hole 12, the end plate 10 and the lower through hole 16, and the rotating shaft 20 is covered with a first oil seal 41 and a second oil seal 42, the first oil seal 41 is arranged in the internal hollow space of the upper boss 11, and the second oil seal 42 is arranged in the internal hollow space of the lower boss 15, and the space separating the first oil seal 41 and the second oil seal 42 from each other forms an oil storage chamber 13, and the oil storage chamber 13 is filled with sealing oil; the oil filling pipe 30 is communicated with the oil storage chamber 13, and the oil filling pipe 30 is used to inject sealing oil into the oil storage chamber 13.

[0025] When in use, the bearing waterproof device will be installed at the bottom of the equipment that needs to be used, and the part with the upper boss 11 will be set in the space where the equipment contacts the liquid, so the liquid flowing downward cannot directly contact the oil seal through the surface of the end plate 10, but needs to bypass the upper boss 11 to contact the oil seal, thereby reducing the damage of the flowing liquid to the oil seal; and even if the liquid passes through the oil seal, the liquid will still be blocked by the sealing oil and cannot leak out through the second oil seal 42, thereby effectively solving the problem that the existing bearing waterproof device is prone to aging and damage, resulting in leakage and damage to the bearing.

[0026] like Figure 2 As shown, in this embodiment, the peripheral wall of the upper boss 11 is provided with an annular groove 14 arranged around the peripheral wall thereof, and the annular groove 14 is provided at the connection between the upper boss 11 and the end plate 10 .

[0027] After adopting this arrangement, the downwardly flowing liquid will first enter the annular groove 14 and act as a buffer for movement, thereby further weakening the damage of the flowing liquid to the oil seal; and the shape of the annular groove 14 is not particularly limited. For example, in this embodiment, the depth dimension of the annular groove 14 increases in the direction from the upper boss 11 to the end plate 10, so that the cross-section of the annular groove 14 is roughly triangular, which is an optional implementation.

[0028] like Figure 2 As shown, in this embodiment, the radial dimension of the first oil seal 41 is larger than the aperture of the upper through hole 12 , and the upper through hole 12 is placed within the covering range of the first oil seal 41 .

[0029] After adopting this configuration, the first oil seal 41 can completely cover the upper through hole 12, thereby strengthening the sealing between the first oil seal 41 and the upper through hole 12, thereby avoiding leakage.

[0030] like Figure 2 As shown, in this embodiment, the radial dimension of the second oil seal 42 is larger than the aperture of the lower through hole 16 , and the lower through hole 16 is placed within the covering range of the second oil seal 42 .

[0031] After adopting this configuration, the second oil seal 42 can completely cover the lower through hole 16, thereby strengthening the sealing between the second oil seal 42 and the lower through hole 16, thereby avoiding leakage.

[0032] like Figure 2 As shown, in this embodiment, a third oil seal 43 and a bearing 50 are provided at the portion where the rotating shaft 20 passes through the lower through hole 16 , and the third oil seal 43 is placed between the lower boss 15 and the bearing 50 .

[0033] After adopting this arrangement, even if the second oil seal 42 leaks, the third oil seal 43 can still protect the bearing 50 , thereby further improving the protection of the bearing 50 .

[0034] Moreover, this embodiment further arranges the third oil seal 43 and the lower boss 15 separately from each other, so that a hollow space is formed therebetween. Therefore, even if the second oil seal 42 leaks, the leaked liquid can only flow away from the hollow space and cannot come into contact with the bearing 50, thereby further increasing the protection of the bearing 50.

[0035] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A bearing waterproof device, characterized in that: It includes an end plate, a rotating shaft and an oil filling pipe; The two opposite surfaces of the end plate are penetrated; one surface of the end plate is provided with an upper boss with a hollow interior, the upper boss surrounds the portion of the end plate penetrated, and an upper through hole communicating with the interior of the upper boss is provided on the upper boss; the other surface of the end plate is provided with a lower boss with a hollow interior, the lower boss surrounds the portion of the end plate penetrated, and a lower through hole communicating with the interior of the lower boss is provided on the lower boss; the portion of the end plate penetrated is communicated with the upper boss and the internal space of the lower boss; The rotating shaft passes through the upper through hole, the end plate and the lower through hole, and the rotating shaft outer shell is provided with a first oil seal and a second oil seal, the first oil seal is arranged in the inner hollow space of the upper boss, and the second oil seal is arranged in the inner hollow space of the lower boss, and the space separating the first oil seal and the second oil seal from each other forms an oil storage cavity; The oil injection pipe is communicated with the oil storage chamber.

2. The bearing waterproof device according to claim 1, characterized in that: The peripheral wall of the upper boss is provided with an annular groove arranged around the peripheral wall, and the annular groove is provided at the connection between the upper boss and the end plate.

3. The bearing waterproof device according to claim 2, characterized in that: In the direction from the upper boss toward the end plate, the depth dimension of the annular groove increases.

4. The bearing waterproof device according to claim 1, characterized in that: The radial dimension of the first oil seal is larger than the aperture of the upper through hole, and the upper through hole is located within the covering range of the first oil seal.

5. The bearing waterproof device according to claim 1, characterized in that: The radial dimension of the second oil seal is larger than the aperture of the lower through hole, and the lower through hole is located within the covering range of the second oil seal.

6. The bearing waterproof device according to claim 1, characterized in that: The portion of the rotating shaft passing through the lower through hole is covered with a third oil seal and a bearing, and the third oil seal is placed between the lower boss and the bearing.

7. The bearing waterproof device according to claim 6, characterized in that: The third oil seal and the lower boss are arranged separately from each other.

8. The bearing waterproof device according to claim 1, characterized in that: The oil storage cavity is filled with sealing oil.

Images