Improved ptf low speed combination oil seal

Abstract

A modified PTFE low-speed combined oil seal belongs to the field of oil seal technology. Both the outer and inner skeletons have L-shaped cross-sections, with one of them inverted, forming a square cavity between them. The rubber includes an outer skeleton covering the outside of the outer skeleton, an inner skeleton covering the outside of the inner skeleton, and a sealing part within the square cavity. One end of the sealing part is connected to the inner side of the outer skeleton, and the other end has a gap between it and two straight edges of the inner skeleton. This gap is filled by a thin sheet of the inner skeleton, and the middle of the sealing part is filled with a thin sheet of the outer skeleton. This invention changes the structure of traditional oil seals by combining two L-shaped oil seals together. Furthermore, the use of activated PTFE sheets improves the oil seal's resistance to uneven wear and high temperatures, extending its service life.

Description

Technical Field

[0001] This utility model belongs to the field of oil seal technology, specifically relating to a modified PTFE low-speed combined oil seal. Background Technology

[0002] Oil seals are key components used for sealing rotating shafts in mechanical equipment, and their performance directly affects the stable operation and maintenance cycle of the equipment.

[0003] Normally, oil seals have a short lifespan due to wear and rubber aging during use. Summary of the Invention

[0004] The purpose of this invention is to provide a modified PTFE low-speed combined oil seal that can improve the service life of the oil seal.

[0005] The technical solution adopted by this utility model is: A modified PTFE low-speed combined oil seal includes an outer skeleton, an inner skeleton, rubber, an inner skeleton sheet, and an outer skeleton sheet. The outer skeleton and the inner skeleton both have L-shaped cross-sections, and one of the outer skeleton and the inner skeleton is inverted, forming a square cavity between the outer skeleton and the inner skeleton. The rubber includes an outer skeleton wrapping part covering the outside of the outer skeleton, an inner skeleton wrapping part covering the outside of the inner skeleton, and a sealing part disposed within the square cavity. One end of the sealing part is connected to the inner side of the outer skeleton, and the other end has a gap between it and the two straight edges of the inner side of the inner skeleton. This gap is filled by the inner skeleton sheet, and the middle of the sealing part is filled with the outer skeleton sheet.

[0006] Compared with the prior art, the present invention has the following advantages: This invention changes the structure of traditional oil seals by combining two L-shaped oil seals together. At the same time, the use of activated PTFE sheets can improve the oil seal's resistance to uneven wear and high temperature, and extend its service life. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model; Among them: 1. Outer skeleton; 2. Inner skeleton; 3. Inner skeleton sheet; 4. Outer skeleton sheet; 5. Rubber; 501. Outer skeleton wrapping part; 502. Sealing part; 503. Inner skeleton wrapping part. Detailed Implementation

[0008] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0009] like Figure 1As shown, a modified PTFE low-speed combined oil seal includes an outer skeleton 1, an inner skeleton 2, rubber 5, an inner skeleton sheet 3, and an outer skeleton sheet 4. The outer skeleton 1 and the inner skeleton 2 both have L-shaped cross-sections, and one of the outer skeleton 1 and the inner skeleton 2 is inverted, forming a square cavity between the outer skeleton 1 and the inner skeleton 2. The rubber 5 includes an outer skeleton wrapping part 501 covering the outside of the outer skeleton 1, an inner skeleton wrapping part 503 covering the outside of the inner skeleton 2, and a sealing part 502 disposed in the square cavity. One end of the sealing part 502 is connected to the inner side of the outer skeleton 1, and the other end has a gap between it and the two straight edges of the inner side of the inner skeleton 2. This gap is filled by the inner skeleton sheet 3, and the middle of the sealing part 502 is filled with the outer skeleton sheet 4.

[0010] The outer skeleton sheet 4 is connected to the outer skeleton 1 and the inner skeleton sheet 3 at both ends.

[0011] The connection end between the outer skeleton sheet 4 and the outer skeleton 1 is located at the corner of the outer skeleton 1, and the connection end between the outer skeleton sheet 4 and the inner skeleton sheet 3 is located at its straight edge.

[0012] The inner skeleton sheet 3 is connected to both the sealing part 502 and the inner skeleton 2.

[0013] Both the inner skeleton sheet 3 and the outer skeleton sheet 4 are made of activated PTFE.

[0014] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A modified PTFE low-speed combined oil seal, characterized in that: It includes an outer skeleton (1), an inner skeleton (2), rubber (5), an inner skeleton sheet (3), and an outer skeleton sheet (4); the cross-sections of the outer skeleton (1) and the inner skeleton (2) are both L-shaped, and one of the outer skeleton (1) and the inner skeleton (2) is inverted, so that a square cavity is formed between the outer skeleton (1) and the inner skeleton (2). The rubber (5) includes an outer skeleton wrapping part (501) covering the outside of the outer skeleton (1), an inner skeleton wrapping part (503) covering the outside of the inner skeleton (2), and a sealing part (502) set in the square cavity. One end of the sealing part (502) is connected to the inside of the outer skeleton (1), and the other end is provided with a gap between the two straight sides of the inside of the inner skeleton (2). The gap is filled by the inner skeleton sheet (3), and the middle of the sealing part (502) is filled with the outer skeleton sheet (4).

2. The modified PTFE low-speed combined oil seal according to claim 1, characterized in that: The outer skeleton sheet (4) is connected to the outer skeleton (1) and the inner skeleton sheet (3) at both ends.

3. The modified PTFE low-speed combined oil seal according to claim 2, characterized in that: The connection end between the outer skeleton sheet (4) and the outer skeleton (1) is located at the corner of the outer skeleton (1), and the connection end between the outer skeleton sheet (4) and the inner skeleton sheet (3) is located at its straight edge.

4. The modified PTFE low-speed combined oil seal according to claim 1, characterized in that: The inner skeleton sheet (3) is connected to both the sealing part (502) and the inner skeleton (2).

5. A modified PTFE low-speed combined oil seal according to claim 1, characterized in that: Both the inner skeleton sheet (3) and the outer skeleton sheet (4) are made of activated PTFE.

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