Bearing sealing device

Abstract

The utility model relates to a bearing sealing device which comprises a roll shaft, a bearing and sealing protection devices, the bearing is arranged on the outer side of the roll shaft, the sealing protection devices are arranged on the two sides of the bearing, each sealing protection device comprises a shaft seal and a metal framework, the shaft seal comprises an inner ring, an outer ring, a connecting part and a sealing lip, and the outer ring, the connecting part and the sealing lip are coaxially arranged. The inner ring, the outer ring and the connecting part are integrally formed, an annular groove is formed between the inner ring and the outer ring, the metal framework is located in the outer ring and the connecting part, and the sealing lip is arranged on the inner ring. When a battery cell is produced and processed, solvent and dust can be effectively prevented from entering the bearing to cause irreversible damage, and the sealing protection device is fully combined with the roller shaft and the bearing, so that the sealing protection device cannot be separated from the bearing during operation, and the bearing on equipment can be protected for a long time.

Description

Technical Field

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

[0002] Battery cells are mainly composed of positive electrode materials, negative electrode materials, electrolytes, diaphragms and casings. Solvents and dust are required in the production process of battery cells. Once dust and other foreign matter enter the bearings of battery cell processing equipment during rotation, they will be severely worn. When solvents and dust combine, corrosion is likely to occur, thereby reducing the service life of the bearings.

[0003] Therefore, a bearing sealing device is needed to solve the deficiencies in the prior art. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a bearing sealing device, which can effectively prevent solvents and dust from entering the interior of the bearing during the production and processing of battery cells through the sealing protection device, avoid causing irreversible damage, and extend the service life of the bearing.

[0005] In order to solve the above technical problems, the utility model provides a bearing sealing device, including a roller shaft, a bearing and a sealing protection device, wherein the bearing is arranged on the outside of the roller shaft, and the sealing protection device is arranged on both sides of the bearing.

[0006] In one embodiment of the utility model, the sealing protection device includes a shaft seal and a metal frame, the shaft seal includes an inner ring, a coaxially arranged outer ring, a connecting part and a sealing lip, the inner ring, the outer ring and the connecting part are integrally formed, an annular groove is formed between the inner ring and the outer ring, the metal frame is located inside the outer ring and the connecting part, and the sealing lip is arranged on the inner ring.

[0007] In one embodiment of the utility model, the sealing lip protrudes in a direction away from the outer ring. After being installed in place, the sealing lip fits the outer side of the roller shaft, so that the shaft seal can still maintain a tight sealing state under the action of pressure to ensure the sealing effect.

[0008] In one embodiment of the present utility model, the sealing protection device further comprises a spring, and the spring sleeve is arranged on the outer wall of the inner ring.

[0009] In one embodiment of the utility model, a spring installation groove is provided on the outer circumference of the inner ring, and the spring is embedded in the spring installation groove. Under the action of the spring, a good sealing effect can still be maintained, and the spring is installed in the spring installation groove by embedding, which can avoid the spring from slipping off the shaft seal due to long-term use.

[0010] In one embodiment of the present invention, the spring installation groove is V-shaped.

[0011] In one embodiment of the present invention, a dust lip is provided on the inner ring.

[0012] In an embodiment of the present invention, the shaft seal is a rubber component, and the rubber component is made of fluorinated rubber.

[0013] In one embodiment of the utility model, a blocking piece is provided at the connection between the sealing protection device and the roller.

[0014] In an embodiment of the present invention, the roller is made of stainless steel, and the surface hardness is not less than 50HRC.

[0015] In one embodiment of the present invention, the surface roughness Ra is 0.2-0.6.

[0016] The above technical solution of the utility model has the following advantages compared with the prior art:

[0017] The utility model discloses a bearing sealing device, which can effectively prevent solvents and dust from entering into the bearing and causing irreversible damage during the production and processing of battery cells. The sealing protection device is fully integrated with the roller shaft and the bearing. The sealing protection device and the bearing will not separate during operation, so that the bearings on the equipment can be durably protected. The metal skeleton on the shaft seal can enhance the supporting strength of the shaft seal, so that the shaft seal can maintain a compressed and sealed state under the action of external pressure, thereby ensuring the sealing effect and effectively avoiding the situation where gaps occur during long-term use or under the action of radial force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0019] Figure 1 It is a structural schematic diagram of a bearing sealing device of a battery core processing equipment in a preferred embodiment of the utility model;

[0020] Figure 2 yes Figure 1 A schematic diagram of the internal structure of a bearing sealing device of a battery cell processing equipment shown;

[0021] Figure 3 yes Figure 1 A structural schematic diagram of a sealing protection device of a bearing sealing device of a battery cell processing equipment shown;

[0022] Explanation of the reference numerals in the drawings in the specification: 1. roller; 2. bearing; 3. sealing protection device; 31. shaft seal; 311. inner ring; 312. outer ring; 313. connecting part; 314. sealing lip; 315. dustproof lip; 316. annular groove; 32. metal frame; 33. spring; 4. baffle; 5. roller. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0024] Reference Figure 1 and 2 As shown, a bearing sealing device of the utility model comprises a roller shaft 1, a bearing 2 and a sealing protection device 3, wherein the bearing 2 is arranged on the outside of the roller shaft 1, and the sealing protection device 3 is arranged on both sides of the bearing 2. The sealing protection device 3 comprises a shaft seal 31 and a metal skeleton 32, wherein the shaft seal 31 comprises an inner ring 311, a coaxially arranged outer ring 312, a connecting portion 313 and a sealing lip 314, wherein the inner ring 311, the outer ring 312 and the connecting portion 313 are integrally formed, an annular groove 316 is formed between the inner ring 311 and the outer ring 312, the metal skeleton 32 is located inside the outer ring 312 and the connecting portion 313, and the sealing lip 314 is arranged on the inner ring 311.

[0025] In the above structure, the sealing protection device 3 is fully combined with the roller shaft 1 and the bearing 2. The sealing protection device 3 and the bearing 2 will not separate during operation, so that the bearing 2 on the equipment can be permanently protected. The metal skeleton 32 can enhance the support strength of the shaft seal 31, so that the shaft seal 31 can still maintain a tight sealing state under the action of external pressure, ensure the sealing effect, and effectively avoid the situation where a gap occurs during long-term use or under the action of radial force; and an annular groove 316 is formed between the inner ring 311 and the outer ring 312 of the shaft seal 31, so that when the shaft seal 31 is subjected to external pressure, the outer ring 312 forms a buffer during the squeezing process, reducing the squeezing of the inner ring 311 by the outer ring 312, and preventing the sealing lip 314 from separating from the roller shaft 1, thereby improving the dustproof performance of the shaft seal 31 to prevent dust from intruding. In this embodiment, the inner ring 311 and the outer ring 312 are coaxially arranged.

[0026] like Figure 3As shown, the sealing lip 314 protrudes in a direction away from the outer ring 312. After the sealing lip 314 is installed in place, the protruding part of the sealing lip 314 fits the outer side of the roller shaft 1. When the shaft seal 31 is squeezed by the outside, the sealing lip 314 will generate an elastic reaction force toward the radial inside, and at the same time increase the contact area between the sealing lip 314 and the roller shaft 1, so that the shaft seal 31 will not be squeezed and deformed, resulting in sealing failure, so that the shaft seal 31 can still maintain a compressed sealing state under the action of external pressure, thereby ensuring the sealing effect.

[0027] In this embodiment, the sealing protection device 3 further includes a spring 33, and the spring 33 is sleeved on the outer wall of the inner ring 311. The design of the spring 33 enables the shaft seal 31 to maintain a good sealing effect under the action of the spring 33 under the condition of long-term wear, and the sealing end surface of the shaft seal 31 always maintains contact force during the rotation of the roller shaft 1 to prevent external foreign matter from entering the bearing 2.

[0028] Furthermore, a spring installation groove is provided on the outer circumference of the inner ring 311, and the spring 33 is embedded in the spring installation groove. Under the action of the spring 33, a good sealing effect can still be maintained, and the spring 33 is installed in the spring installation groove by embedding, which can avoid the spring 33 from slipping off the shaft seal 31 due to long-term use.

[0029] The spring installation groove in this embodiment is V-shaped. The design of the spring 33 enables the shaft seal 31 to maintain a good sealing effect under the action of the spring 33 even in the case of long-term wear.

[0030] In addition, a dustproof lip 315 is provided on the inner ring 311. The dustproof lip 315 is closely fitted on the outer side of the roller shaft 1, and can effectively prevent dust from penetrating from the gap between the inner ring 311 and the roller shaft 1.

[0031] In this embodiment, the shaft seal 31 is a rubber component. Preferably, the rubber component is made of fluorinated rubber and has an operating temperature of -20°C to 180°C.

[0032] In one embodiment of the utility model, a baffle 4 is provided at the connection between the sealing protection device 3 and the roller 5. The baffle 4 is made of stainless steel and is used to protect the rubber shaft seal of the sealing protection device 3 to prevent the sealing protection device 3 from being worn by external forces and affecting the sealing effect of the sealing protection device 3.

[0033] Preferably, the roller 1 is made of stainless steel, with a surface hardness of not less than 50HRC and a surface roughness Ra of 0.2-0.6.

[0034] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A bearing sealing device, characterized in that: It includes a roller shaft, a bearing and a sealing protection device, wherein the bearing is arranged on the outside of the roller shaft, the sealing protection device is arranged on both sides of the bearing, the sealing protection device includes a shaft seal and a metal frame, the shaft seal includes an inner ring, a coaxially arranged outer ring, a connecting part and a sealing lip, the inner ring, the outer ring and the connecting part are integrally formed, an annular groove is formed between the inner ring and the outer ring, the metal frame is located inside the outer ring and the connecting part, the sealing lip is arranged on the inner ring; a dustproof lip is arranged on the inner ring; the sealing lip protrudes in the direction away from the outer ring; the sealing protection device also includes a spring, the spring sleeve is arranged on the outer wall of the inner ring; a spring mounting groove is circumferentially arranged on the outer side of the inner ring, the spring is embedded in the spring mounting groove; the spring mounting groove is V-shaped.

2. A bearing sealing device according to claim 1, characterized in that: The shaft seal is a rubber component, and the rubber component is made of fluorinated rubber.

3. A bearing sealing device according to claim 1, characterized in that: A blocking piece is provided at the connection between the sealing protection device and the roller.

4. A bearing sealing device according to claim 1, characterized in that: The roller is made of stainless steel, and the surface hardness is not less than 50HRC.

5. A bearing sealing device according to claim 4, characterized in that: The roller surface roughness Ra is 0.2-0.6.

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