CN-224214580-U - Multi-lip bearing sealing ring

Abstract

The utility model discloses a multi-lip bearing sealing ring, which comprises a sealing ring body and a supporting framework arranged in the sealing ring, wherein a first sealing lip is arranged on the outer extending edge of the sealing ring body, a second sealing lip is arranged on the inner extending edge of the sealing ring body, a third sealing lip and a fourth sealing lip are extended towards the circle center direction of the sealing ring body on the inner extending edge of the sealing ring body, the first sealing lip, the second sealing lip, the third sealing lip and the fourth sealing lip are all in annular structures, an inner groove I is formed between the second sealing lip and the fourth sealing lip, and an inner groove II is formed between the third sealing lip and the fourth sealing lip.

Inventors

• LIN FENG
• LIU HONGFEI
• ZHAO YANHAO
• CHEN GUODENG

Assignees

• 浙江奋发密封科技股份有限公司

Dates

Publication Date

20260508

Application Date

20250605

Claims (6)

1. 1. The multi-lip bearing sealing ring is characterized in that a first sealing lip (3) is arranged on the outer extending edge of the sealing ring body (1), a second sealing lip (4) is arranged on the inner extending edge of the sealing ring body (1), a third sealing lip (5) and a fourth sealing lip (6) extend towards the center direction of the sealing ring body (1) from the inner extending edge of the sealing ring body (1), the first sealing lip (3), the second sealing lip (4), the third sealing lip (5) and the fourth sealing lip (6) are all in annular structures, an inner groove I (7) is formed between the second sealing lip (4) and the fourth sealing lip (6), and an inner groove II (8) is formed between the third sealing lip (5) and the fourth sealing lip (6).
2. 2. A multi-lip bearing seal ring according to claim 1, characterized in that a decompression groove one (9) is arranged between the first seal lip (3) and the seal ring body (1), and a decompression groove two (10) is arranged between the third seal lip (5) and the seal ring body (1).
3. 3. A multi-lip bearing seal according to claim 2, wherein the side wall of the first lip (3) is provided with a bevel (11).
4. 4. The multi-lip bearing sealing ring according to claim 1, wherein one side of the supporting framework (2) close to the outer extension edge of the sealing ring body (1) is further provided with an extension part I (12), one side of the supporting framework (2) close to the inner extension edge of the sealing ring body (1) is provided with an extension part II (13), and the extension part II (13) is obliquely arranged.
5. 5. The multi-lip bearing seal ring according to claim 4, wherein the supporting framework (2) is a metal framework, and the supporting framework (2) is a stainless steel or carbon steel structure.
6. 6. A multi-lip bearing seal according to claim 1, wherein the seal body (1), the first seal lip (3), the second seal lip (4), the third seal lip (5) and the fourth seal lip (6) are each made of nitrile rubber or fluororubber.

Description

Multi-lip bearing sealing ring Technical Field The utility model relates to the field of sealing rings, in particular to a multi-lip bearing sealing ring. Background Bearing seals are important components for preventing grease leakage and external contaminants from penetrating into the interior of the bearing to ensure that the bearing is able to operate safely and permanently under the required conditions. The bearing seal rings can be classified into contact type and non-contact type according to contact type. The non-contact sealing ring is not in direct contact with the rolling body, is suitable for high-rotation-speed scenes, and the contact sealing ring is directly pressed on the shaft, so that the sealing performance is better, but the friction moment and the temperature are increased. The comparison document CN215720270U discloses a high-speed elevator bearing sealing ring, the L-shaped framework is designed in the interior for the elasticity of the sealing ring but lack of support to the outer lip of the sealing ring, so that the outer lip lacks rigidity, the stability of contact with a bearing and the binding force of installation are poor, the comparison document also designs an outer sealing flanging and an outer sealing lip for effectively improving the sealing performance of the outer ring position of the sealing ring, but the elastic deformation capacity of the single-lip or two-lip bearing sealing ring is limited, and the performance of the single-lip or two-lip bearing sealing ring is easily influenced when the single-lip or two-lip bearing sealing ring faces extreme working conditions such as high temperature, low temperature, high speed and the like. For example, in high temperature environments, the seal ring material may age and harden, resulting in an increased seal gap between the seal lip and the shaft, and in low temperature environments, the material may become brittle, reducing its elasticity and flexibility, and affecting the sealing effect. The utility model discloses a novel sealing washer for multi-lip wind-powered electricity generation turntable bearing of comparison document CN206563037U, adopt multi-lip formula design, satisfied the sealed more requirement of wind-powered electricity generation turntable bearing, increased the radial compression volume of inner lip and outer lip and bearing ring, after turntable bearing operates for a long time, can automatic elasticity resume the compensation, keep sealed closed circuit, above-mentioned document is provided a multi-lip bearing sealing washer, but lacks corresponding skeleton texture in the inside of sealing washer in the aforesaid for the sealing washer can not keep shape and necessary tension when using, makes the rigidity of sealing washer relatively poor, and the sealing washer is in its cohesion of long-term in-process and stability decline relatively fast. According to the application, through the problems in the two prior arts, the sealing ring with the multi-lip structure is designed on the inner part and the outer part of the framework, so that the sealing ring can be widely applied to bearing seals of various industrial machines, and the leakage of lubricating oil and the invasion of impurities are prevented through reliable sealing, thereby ensuring the normal operation and the service life of equipment. Disclosure of utility model The utility model aims to provide a multi-lip bearing sealing ring, which solves the problems in the prior art. The technical aim of the utility model is realized by the following technical scheme: A multi-lip bearing sealing ring comprises a sealing ring body and a supporting framework arranged in the sealing ring body, wherein a first sealing lip is arranged on the outer extending edge of the sealing ring body, a second sealing lip is arranged on the inner extending edge of the sealing ring body, a third sealing lip and a fourth sealing lip extend towards the circle center direction of the sealing ring body, the first sealing lip, the second sealing lip, the third sealing lip and the fourth sealing lip are all in annular structures, an inner groove I is formed between the second sealing lip and the fourth sealing lip, and an inner groove II is formed between the third sealing lip and the fourth sealing lip. Preferably, a first pressure reducing groove is formed between the first sealing lip and the sealing ring body, and a second pressure reducing groove is formed between the second sealing lip and the sealing ring body. Preferably, an inclined plane is formed on the side wall of the first sealing lip. Preferably, the support framework is further provided with a first extension part at one side close to the outer extension edge of the sealing ring body, a second extension part at one side close to the inner extension edge of the sealing ring body, and the second extension part is obliquely arranged. Preferably, the supporting framework is a metal framework, and the supporting framew