Shaft sealing element with elastic property

Abstract

The utility model relates to the technical field of shaft sealing element devices, discloses a shaft sealing element with an elastic characteristic, and solves the problems that after elastic rubber in the shaft sealing element is used for a long time, the abrasion is more and more serious, the sealing performance of the sealing element is reduced, the sealing element can only be disassembled or replaced, the cost is increased, and the service life of the sealing element is prolonged. A sealing piece is arranged at one end of a bearing and comprises a shell, an iron ring is arranged on the inner side of the shell, rubber is arranged at one end of the iron ring, a first spring is arranged on the outer side of the rubber, a dustproof gasket is arranged on the edge of the inner side of the shell, and a second spring is arranged in the dustproof gasket. The gaps between the rubber and the dustproof gasket and the shaft are increased after the rubber and the dustproof gasket are used for a long time and abraded, binding force is continuously applied to the inner center due to the characteristics of the annular spring, and therefore the rubber and the dustproof gasket can be in tight contact with the shaft all the time, the service life of a sealing piece is greatly prolonged, and the sealing effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sealing device, in particular to a shaft sealing device with elastic properties. Background Art

[0002] Seals are materials or parts that prevent fluids or solid particles from leaking between adjacent joint surfaces and prevent external impurities such as dust and moisture from invading the internal parts of machinery and equipment. The storage room temperature of seals is best below 30°C to avoid high temperature aging of seals.

[0003] The existing Chinese patent with publication number CN202165449U discloses a motor vehicle bearing seal, which fits the seal and the bearing tightly together, improves installation efficiency and saves installation space; the seal only needs to be installed when the bearing is installed, so as to achieve a sealing effect; the vent hole can discharge the gas in the sealing cavity and reduce the pressure in the cavity, but the sealing gasket will wear more and more seriously after long-term use, resulting in a decrease in the sealing performance of the seal, and it can only be disassembled or replaced, thereby increasing costs and reducing work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a shaft seal with elastic characteristics. By adopting the device to work, the problem that the elastic rubber in the shaft seal wears more and more seriously after long-term use, resulting in a decrease in the sealing performance of the seal, and the seal can only be disassembled or replaced, thereby increasing costs and reducing work efficiency is solved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shaft seal with elastic characteristics, including a bearing, a seal fixedly arranged at one end of the bearing, the seal including an outer shell, an iron ring fixedly arranged on the inner side of the outer shell, rubber fixedly arranged at one end of the iron ring, a spring 1 fixedly arranged on the outer side of the rubber, a dustproof gasket fixedly arranged on the inner edge of the outer shell, a spring 2 fixedly arranged inside the dustproof gasket, the gap between the rubber and the dustproof gasket and the shaft increases after long-term use and wear, a spring 1 is arranged on the outer side of the rubber, and a spring 2 is arranged inside the dustproof gasket, because the characteristics of the annular spring continuously apply a binding force to the internal center, so that the rubber and the dustproof gasket will always be in close contact with the shaft, greatly improving the service life of the seal and the sealing effect.

[0006] Preferably, an iron piece is fixedly provided inside the shell, and the iron piece is rectangular in shape, which can greatly support the shell, thereby enhancing the protection of internal parts and extending the service life of the device.

[0007] Preferably, the bearing includes a rotating shaft, one end of which is movably provided with a fixed shaft, and the rotating shaft and the fixed shaft are movably connected so that when the rotating shaft rotates, the fixed shaft can remain stationary, thereby greatly improving the use scenarios of the device.

[0008] Preferably, a closed ring is fixedly provided on the outer side of the fixed shaft, a shaft shell is movably provided on the outer side of the closed ring, and a support ring is fixedly provided on the lower end of the shaft shell away from the closed ring. By setting the closed ring and the support ring, the position of the shaft shell can be fixed without affecting its rotation. At the same time, the shaft shell can also protect the internal parts and fix their positions.

[0009] Preferably, a raceway is fixedly provided on the inner side of the shaft housing, and a slide groove is provided on the outer side of the fixed shaft. The setting of the raceway and the slide groove provides important positional relationship for subsequent parts.

[0010] Preferably, balls are movably provided on the surfaces of the raceway and the slide groove, and a plurality of balls are provided, and the balls are in active contact with the outer side so that the two sides thereof can realize a variety of relative motion relationships.

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

[0012] The utility model proposes a shaft seal with elastic characteristics, including a bearing, one end of the bearing is fixedly provided with a seal, the seal includes an outer shell, an iron ring is fixedly provided on the inner side of the outer shell, one end of the iron ring is fixedly provided with rubber, a spring 1 is fixedly provided on the outer side of the rubber, a dustproof gasket is fixedly provided on the inner edge of the outer shell, a spring 2 is fixedly provided inside the dustproof gasket, the gap between the rubber and the dustproof gasket and the shaft increases after long-term use and wear, a spring 1 is provided through the outer side of the rubber, and a spring 2 is provided inside the dustproof gasket, because the characteristics of the annular spring continuously apply binding force to the internal center, so that the rubber and the dustproof gasket are always in close contact with the shaft, which greatly improves the service life of the seal and the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the planing structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the bearing structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the sealing structure of the utility model.

[0017] In the figure: 1. bearing; 11. rotating shaft; 12. ball; 13. raceway; 14. shaft housing; 15. closing ring; 16. supporting ring; 17. fixed shaft; 18. slide groove; 2. seal; 21. housing; 22. iron piece; 23. iron ring; 24. rubber; 25. spring one; 26. dustproof gasket; 27. spring two. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0020] Combination Figure 4 A shaft seal with elastic properties comprises a bearing 1, a seal 2 is fixedly arranged at one end of the bearing 1, the seal 2 comprises a shell 21, an iron ring 23 is fixedly arranged on the inner side of the shell 21, a rubber 24 is fixedly arranged on one end of the iron ring 23, a spring 1 25 is fixedly arranged on the outer side of the rubber 24, a dustproof gasket 26 is fixedly arranged on the inner edge of the shell 21, a spring 27 is fixedly arranged inside the dustproof gasket 26, the gap between the rubber 24 and the dustproof gasket 26 and the shaft increases after long-term use and wear, a spring 1 25 is arranged on the outer side of the rubber 24, and a spring 27 is arranged inside the dustproof gasket 26, because the characteristics of the annular spring continuously apply a binding force to the inner center, so that the rubber 24 and the dustproof gasket 26 will always be in close contact with the shaft, greatly improving the service life of the seal and the sealing effect.

[0021] Combination Figure 4 An iron piece 22 is fixedly arranged inside the shell 21. The iron piece 22 is rectangular in shape and can greatly support the shell 21, thereby enhancing the protection of internal parts and extending the service life of the device.

[0022] Combination Figure 3 The bearing 1 includes a rotating shaft 11, and a fixed shaft 17 is movably provided at one end of the rotating shaft 11. The rotating shaft 11 and the fixed shaft 17 are movably connected so that when the rotating shaft 11 rotates, the fixed shaft 17 can remain stationary, which greatly improves the use scenario of the device.

[0023] Combination Figure 3A closed ring 15 is fixedly provided on the outer side of the fixed shaft 17, and a shaft housing 14 is movably provided on the outer side of the closed ring 15. A supporting ring 16 is fixedly provided on the lower end of the shaft housing 14 away from the closed ring 15. Through the arrangement of the closed ring 15 and the supporting ring 16, the position of the shaft housing 14 is fixed and its rotation is not affected. At the same time, the shaft housing 14 also protects the internal parts and fixes their positions.

[0024] Combination Figure 3 A raceway 13 is fixedly arranged on the inner side of the shaft housing 14, and a slide groove 18 is provided on the outer side of the fixed shaft 17. The arrangement of the raceway 13 and the slide groove 18 provides important positional relationships for subsequent parts.

[0025] Combination Figure 3 The surfaces of the raceway 13 and the slide groove 18 are movably provided with balls 12, and a plurality of balls 12 are provided. Through the movably contacting contact between the balls 12 and the outer side, a variety of relative motion relationships can be realized on both sides.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shaft seal with elastic properties, comprising a bearing (1), one end of which is fixedly provided with a seal (2), characterized in that: The sealing member (2) comprises a shell (21), an iron ring (23) is fixedly arranged on the inner side of the shell (21), a rubber (24) is fixedly arranged on one end of the iron ring (23), a spring 1 (25) is fixedly arranged on the outer side of the rubber (24), a dustproof gasket (26) is fixedly arranged on the inner edge of the shell (21), and a spring 2 (27) is fixedly arranged inside the dustproof gasket (26).

2. A shaft seal with elastic properties according to claim 1, characterized in that: An iron piece (22) is fixedly arranged inside the housing (21).

3. The shaft seal with elastic properties according to claim 1, characterized in that: The bearing (1) comprises a rotating shaft (11), and a fixed shaft (17) is movably provided at one end of the rotating shaft (11).

4. A shaft seal with elastic properties according to claim 3, characterized in that: A closed ring (15) is fixedly arranged on the outer side of the fixed shaft (17), a shaft housing (14) is movably arranged on the outer side of the closed ring (15), and a support ring (16) is fixedly arranged on the lower end of the shaft housing (14) away from the closed ring (15).

5. A shaft seal with elastic properties according to claim 4, characterized in that: A raceway (13) is fixedly arranged on the inner side of the shaft housing (14), and a slide groove (18) is provided on the outer side of the fixed shaft (17).

6. A shaft seal with elastic properties according to claim 5, characterized in that: Balls (12) are movably arranged on the surfaces of the rolling path (13) and the sliding groove (18).

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