Novel double-lip sealing ring structure

Abstract

The utility model discloses a novel double-lip sealing ring structure which comprises a double-lip sealing ring, a sealing seat and a sealing pressing plate, a sealing installation groove is formed in the sealing seat, the double-lip sealing ring is installed in the sealing installation groove, and the sealing pressing plate is installed on one side of the sealing seat and used for extruding and fixing the double-lip sealing ring. The double-lip sealing ring comprises a main sealing lip and an auxiliary sealing lip, the main sealing lip and the auxiliary sealing lip are in contact fit with the lip contact shaft after being assembled, the lip contact shaft is a rotating component and is in interference fit with the main sealing lip and the auxiliary sealing lip, and a lubricating space is formed after the lip contact shaft, the main sealing lip and the auxiliary sealing lip are assembled. According to the utility model, the sealing effect and the dustproof effect required by the bearing can be effectively achieved, and the service life of the sealing ring can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of bearing seals, and in particular relates to a novel double-lip seal ring structure. Background Art

[0002] As the population continues to grow, energy demand continues to increase. In recent years, with the continuous advancement of technology and the promotion of policies, wind power generation, as one of the main sources of clean energy, has developed rapidly. In wind power generation, the stable operation of bearings is one of the important conditions to ensure the normal operation of the unit. As an important component of the bearing, the sealing performance of the sealing ring is a key factor in maintaining the stable operation of the bearing. Utility Model Content

[0003] The utility model aims to provide a novel double-lip sealing ring structure, which can effectively achieve the sealing effect and dustproof effect required by the bearing and can also extend the service life of the sealing ring.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a novel double-lip sealing ring structure, which includes a double-lip sealing ring, a sealing seat and a sealing pressure plate, the sealing seat is provided with a sealing installation groove, the double-lip sealing ring is installed in the sealing installation groove, the sealing pressure plate is installed on one side of the sealing seat, and is used to extrude and fix the double-lip sealing ring, the double-lip sealing ring includes a main sealing lip and a secondary sealing lip, the main sealing lip and the secondary sealing lip are in contact with the lip contact shaft after assembly, the lip contact shaft is a rotating component, it is interference fitted with the main sealing lip and the secondary sealing lip, and a lubrication space is formed between the three after assembly.

[0005] Furthermore, the double-lip sealing ring includes a rubber part and a metal spring, the rubber part includes a supporting frame, a rubber waist, a main sealing lip and a secondary sealing lip; the metal spring is bonded to the rubber part by an adhesive.

[0006] Furthermore, after the support frame is assembled into the sealing installation groove, the plane of the support frame located on the outside protrudes out of the sealing installation groove.

[0007] Furthermore, the sealing pressure plate is fixed to the sealing seat by screws, and the locked sealing pressure plate squeezes the supporting frame to prevent the sealing ring from rotating in circles.

[0008] Furthermore, the rubber waist plane at the end of the rubber waist is lower than the plane of the supporting frame, so as to avoid the influence of the installation of the sealing pressure plate on the sealing.

[0009] Furthermore, the main sealing lip and the auxiliary sealing lip are connected through a rubber waist, and the combination of the three forms a "human" shaped structure.

[0010] Furthermore, the rubber thickness of the main sealing lip is greater than that of the secondary sealing lip. The top of the main sealing lip is sharp and is used to seal grease or oil. The secondary sealing lip is slender and thin and is used to prevent impurities and moisture in the outside air from entering the bearing.

[0011] Furthermore, the secondary sealing lip is located in the middle of the rubber waist, and a groove is provided at the connection between the root of the secondary sealing lip and the rubber waist.

[0012] The beneficial effects of the utility model are as follows: the seal is a double-lip seal structure, in which the main lip seals grease or oil while the auxiliary lip prevents dust, thereby reducing the wear of the main lip due to external impurities and extending the service life of the main lip; at the same time, a groove is provided at the root of the auxiliary lip to reduce the clamping force of the auxiliary lip, thereby reducing the frictional heat generated by the auxiliary lip.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional schematic diagram of the sealing structure of the utility model.

[0015] Figure 2 It is an assembly schematic diagram of the sealing structure of the utility model.

[0016] Figure 1 The markings are: 110-support frame, 111-installation chamfer, 112-support frame plane, 120-rubber waist, 121-rubber waist plane, 130-secondary sealing lip, 131-secondary sealing lip groove, 140-main sealing lip, 150-metal spring

[0017] Figure 2 The markings are: 100 - double-lip sealing ring, 200 - sealing seat, 211 - sealing seat threaded hole, 212 - sealing installation groove chamfer, 213 - sealing installation groove, 300 - sealing pressure plate, 311 - pressure plate through hole, 312 - sealing pressure plate contact surface, 400 - lip contact shaft, 500 - lubrication space formed by the sealing double lips and the shaft. 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] like Figure 1 , Figure 2 As shown, a novel double-lip seal ring structure includes a double-lip seal ring 100, a seal seat 200, a seal pressure plate 300, a lip contact shaft 400 and a lubrication space 500 formed by the sealing double lips and the shaft.

[0020] like Figure 1 As shown, the double-lip seal ring 100 includes a support frame 110, a rubber waist 120, a secondary sealing lip 130, a main sealing lip 140, and a metal spring 150. The support frame 110 includes a mounting chamfer 111 and a support frame plane 112; the rubber waist 120 includes a rubber waist plane 121; the secondary sealing lip 130 includes a secondary sealing lip groove 131; the main sealing lip 140 is connected to the rubber waist 120; and the metal spring 150 is vulcanized and bonded to the support frame 110, the rubber waist 120, and the main sealing lip 140.

[0021] like Figure 2 As shown, the sealing seat 200 is provided with a sealing seat threaded hole 211, a sealing installation groove chamfer 212, and a sealing installation groove 213; the sealing pressure plate 300 includes a pressure plate through hole 311 and a sealing pressure plate contact surface 312; the lip contact shaft 400 is a rotating component, which is interference fitted with the sealing main lip 140 and the auxiliary lip 130 to form a lubrication space 500.

[0022] In this embodiment, after the support frame 110 is assembled to the sealing installation groove 213, the support frame plane 112 protrudes from the sealing installation groove 213. Therefore, after the sealing pressure plate 300 and the sealing seat 200 are locked by screws, the support frame 110 is in a compressed state, and the rubber waist plane 121 is lower than the support frame 110, so as to ensure that after the sealing pressure plate 300 is assembled, there will be no adverse effect on the rubber waist 120.

[0023] In this embodiment, a groove 131 is provided between the root of the secondary sealing lip 130 and the rubber waist 120. The groove 131 can effectively reduce the clamping force on the shaft 400 caused by increasing the secondary sealing lip 130, thereby reducing the friction heat generated by the secondary sealing lip 130 and extending the friction and wear life of the sealing lip.

[0024] In this embodiment, the main sealing lip 140 and the auxiliary sealing lip 130 are connected by the rubber waist 120. The three are combined to form a "human" shape. After being assembled with the shaft 400, a lubrication space 500 is formed. The lubrication space 500 can store an appropriate amount of grease when the sealing ring is initially assembled, thereby lubricating the main sealing ring lip 140 and the auxiliary sealing ring lip 130 during the operation of the sealing ring, so as to achieve the purpose of extending the service life of the sealing ring.

[0025] In summary, in the present seal structure, the main lip plays a role in sealing grease or oil while the auxiliary lip plays a role in dust prevention through the special structural design; the influence of the installation pressure plate on the seal can be effectively avoided through the special structural design; at the same time, the special structural design will not cause large frictional heat generation while increasing the auxiliary sealing lip; finally, the special structural design can better provide lubrication conditions for the main sealing lip, thereby achieving the purpose of extending the service life of the sealing ring.

[0026] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the protection scope of the utility model in any form, and all technical solutions obtained by equivalent replacement and other methods fall within the protection scope of the utility model. The parts not involved in the utility model are the same as the existing technology or can be implemented by the existing technology.

Claims

1. A new double-lip sealing ring structure, characterized in that: It includes a double-lip sealing ring, a sealing seat and a sealing pressure plate. The sealing seat is provided with a sealing installation groove, the double-lip sealing ring is installed in the sealing installation groove, and the sealing pressure plate is installed on one side of the sealing seat to extrude and fix the double-lip sealing ring. The double-lip sealing ring includes a main sealing lip and a secondary sealing lip. The main sealing lip and the secondary sealing lip are in contact with the lip contact shaft after assembly. The lip contact shaft is a rotating component. It is interference-fitted with the main sealing lip and the secondary sealing lip, and a lubrication space is formed between the three after assembly.

2. A novel double-lip seal ring structure according to claim 1, characterized in that: The double-lip sealing ring comprises a rubber part and a metal spring, wherein the rubber part comprises a supporting frame, a rubber waist, a main sealing lip and a secondary sealing lip; the metal spring is bonded to the rubber part by an adhesive.

3. A novel double-lip seal ring structure according to claim 2, characterized in that: After the support frame is assembled into the sealing installation groove, the plane of the support frame located on the outside protrudes out of the sealing installation groove.

4. A novel double-lip seal ring structure according to claim 3, characterized in that: The sealing pressing plate is fixed on the sealing seat by screws, and the locked sealing pressing plate squeezes the supporting frame to prevent the sealing ring from rotating in circles.

5. A novel double-lip seal ring structure according to claim 3, characterized in that: The rubber waist plane at the end of the rubber waist is lower than the support frame plane, so as to avoid the influence of the installation of the sealing pressure plate on the sealing.

6. A novel double-lip seal ring structure according to claim 2, characterized in that: The main sealing lip and the auxiliary sealing lip are connected through a rubber waist, and the combination of the three forms a "human" shaped structure.

7. A novel double-lip seal ring structure according to claim 2, characterized in that: The rubber thickness of the main sealing lip is greater than that of the secondary sealing lip. The main sealing lip is used to seal grease or sealing oil, and the secondary sealing lip is used to prevent impurities and moisture in the external air from entering the bearing.

8. A novel double-lip seal ring structure according to claim 2, characterized in that: The secondary sealing lip is located in the middle of the rubber waist, and a groove is arranged at the connection between the root of the secondary sealing lip and the rubber waist.

Images