Self-lubring seal

Abstract

The utility model relates to a self-lubricating sealing element, which is sleeved on an axle center and can store a lubricant. The moist sealing element is provided with a through hole, a plurality of sealing structures and at least one concave structure. The sealing structure and the concave structure surround the wall surface of the through hole. The inner concave structure is filled with the lubricant, the self-lubricating sealing piece is arranged on the axis in a sleeving mode, the sealing structure is attached to the axis, and the lubricant cannot leak from the inner concave structure. The self-lubricating sealing element has the advantages that the inner concave structure of the self-lubricating sealing element can store lubricant, and along with friction between the axle center and the sealing structure, the lubricant can be supplemented between the axle center and the sealing structure at any time, so that abrasion of the sealing structure is slowed down, and the service life of the self-lubricating sealing element is prolonged.

Description

Technical Field

[0001] The utility model relates to a sealing element, in particular to a self-lubricating sealing element. Background Art

[0002] Some mechanisms on the market have a shaft that can rotate or move axially, and the two ends of the shaft are set in two different environments, such as one end connected to a motor and the other end in a liquid. Therefore, a seal is set on the shaft and located at the junction of the two environments to isolate the two environments and achieve a sealing effect.

[0003] When installing a seal, lubricant is first applied to the seal and then placed on the shaft to maintain the sealing effect while keeping the shaft running smoothly. However, during use, the lubricant is gradually pushed away from the seal as the shaft runs, causing the seal and the shaft to lose lubrication and increase friction, resulting in accelerated wear of the seal. Utility Model Content

[0004] The utility model provides a self-lubricating sealing element, which is used for being sleeved on an axis and capable of storing a lubricant.

[0005] To achieve the above-mentioned purpose, the self-lubricating seal proposed by the utility model has:

[0006] a through hole, wherein the axis passes through the through hole;

[0007] A plurality of sealing structures are formed around the wall surface of the through hole, and the sealing structures are in close contact with the axis;

[0008] At least one concave structure is formed around the wall of the through hole, and one of the at least one concave structure is located between two of the sealing structures; the lubricant is stored in the at least one concave structure.

[0009] Therefore, the advantage of the utility model is that the concave structure of the self-lubricating seal can store lubricant. As the friction between the shaft and the sealing structure occurs, the lubricant can be replenished between the shaft and the sealing structure at any time, thereby reducing the wear of the sealing structure and extending the service life of the self-lubricating seal.

[0010] As for the aforementioned self-lubricating seal, wherein the cross section of each sealing structure is arc-shaped or pointed.

[0011] As for the aforementioned self-lubricating seal, the shapes of the sealing structures are different.

[0012] As in the aforementioned self-lubricating seal, wherein the sealing structure has three sealing structures in total, and the at least one concave structure has two concave structures in total; the three sealing structures and the two concave structures are arranged alternately.

[0013] As the aforementioned self-lubricating seal, it has a first part and a second part; one of the sealing structures is formed in the first part, and the other sealing structure is formed in the second part; the first part and the second part are fitted together to form one of the at least one concave structures.

[0014] As the aforementioned self-lubricating seal, it has a reinforcement structure, and the reinforcement structure is disposed around the inside of the self-lubricating seal.

[0015] As the aforementioned self-lubricating seal, it has a channel, and the channel runs through the outer surface of the self-lubricating seal to the at least one concave structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional schematic diagram of the first embodiment of the utility model arranged on the axis.

[0017] Figure 2 It is a cross-sectional schematic diagram of the second embodiment of the utility model.

[0018] Figure 3 It is a cross-sectional schematic diagram of the third embodiment of the utility model.

[0019] Figure 4 It is a cross-sectional schematic diagram of a fourth embodiment of the present utility model.

[0020] Figure 5 It is a cross-sectional schematic diagram of a fifth embodiment of the present utility model.

[0021] Figure 6 It is a cross-sectional schematic diagram of the sixth embodiment of the utility model.

[0022] Figure 7 It is a cross-sectional schematic diagram of the seventh embodiment of the utility model.

[0023] A: Axis

[0024] 10: Self-lubricating seals

[0025] 11: Part 1

[0026] 12: Part 2

[0027] 20:Piercing

[0028] 30: Sealing structure

[0029] 40: Concave structure

[0030] 50: Strengthen the structure

[0031] 60: Pipeline DETAILED DESCRIPTION

[0032] The following is a detailed description of the technical means used by the present invention to achieve the intended purpose of the present invention with reference to the drawings and preferred embodiments of the present invention.

[0033] Please refer to Figures 1 to 7 The utility model provides a self-lubricating seal 10, which is used to be sleeved on an axis A and can store a lubricant. The self-lubricating seal 10 has a through hole 20, a plurality of sealing structures 30 and at least one concave structure 40.

[0034] The axis A passes through the through hole 20, and the axis A can rotate relative to the self-lubricating seal 10 or move axially relative to the self-lubricating seal 10. The sealing structure 30 and the concave structure 40 are formed around the wall of the through hole 20, and there is a concave structure 40 between any two sealing structures 30. The sealing structure 30 fits the axis A, whereby the sealing structure 30, the concave structure 40 and the axis A form a space so that the self-lubricating seal 10 can store lubricant.

[0035] In the first embodiment (such as Figure 1 As shown in FIG. 1 , the self-lubricating seal 10 has two sealing structures 30 and one concave structure 40. The surface of the sealing structure 30 contacting the axis A is arc-shaped, and the two sealing structures 30 have the same shape and are symmetrical to each other. The surface of the concave structure 40 is arc-shaped, and the cross-sections of the surfaces of the sealing structure 30 and the concave structure 40 are bell-shaped curves.

[0036] In the second embodiment, the self-lubricating seal 10 (such as Figure 2 The self-lubricating seal 10 in the first embodiment is similar to the self-lubricating seal 10, except that the surface of the sealing structure 30 contacting the axis A is pointed, and the cross-section of the space between the sealing structure 30, the concave structure 40 and the axis A is triangular.

[0037] In the third embodiment, the self-lubricating seal 10 (such as Figure 3 ) is similar to the self-lubricating seal 10 in the second embodiment, except that the shapes of the two sealing structures 30 are different.

[0038] In the fourth embodiment, the self-lubricating seal 10 (such as Figure 4 ) is similar to the self-lubricating seal 10 in the first embodiment, except that the self-lubricating seal 10 has three sealing structures 30 and two concave structures 40, and there is one concave structure 40 between every two sealing structures 30.

[0039] In the fifth embodiment, the self-lubricating seal 10 (such as Figure 51 is similar to the self-lubricating seal 10 in the first embodiment, except that the self-lubricating seal 10 is divided into a first portion 11 and a second portion 12 which are independently separable, and both the first portion 11 and the second portion 12 can be sleeved on the axis A. One sealing structure 30 is located on the first portion 11, and the other sealing structure 30 is located on the second portion 12. When the first portion 11 and the second portion 12 are sleeved on the axis A, the first portion 11 and the second portion 12 can fit each other, and a concave structure 40 is formed between the two sealing structures 30.

[0040] In the sixth embodiment, the self-lubricating seal 10 (such as Figure 6 The embodiment shown in FIG. 1 is similar to the self-lubricating seal 10 in the second embodiment, except that the self-lubricating seal 10 further has a reinforcing structure 50, and the reinforcing structure 50 is disposed around the inside of the self-lubricating seal 10. The reinforcing structure 50 strengthens the structure of the self-lubricating seal 10 to prevent the self-lubricating seal 10 from breaking.

[0041] In the seventh embodiment, the self-lubricating seal 10 (such as Figure 7 The self-lubricating seal 10 in the second embodiment is similar to the self-lubricating seal 10, except that the self-lubricating seal 10 further has a pipe 60, which runs from the outer surface of the self-lubricating seal 10 to the surface of the concave structure 40, and the lubricant is replenished to the space between the sealing structure 30, the concave structure 40 and the axis A through the pipe 60.

[0042] When using the self-lubricating seal 10 of the present invention, firstly, apply lubricant to the through hole 20 and fill the lubricant into the concave structure 40. Then, the self-lubricating seal 10 is sleeved on the shaft A, and the sealing structure 30 is fitted to the shaft A, so that the lubricant cannot leak from the concave structure 40. As the shaft A rotates or moves relative to the self-lubricating seal 10, friction is generated between the shaft A and the sealing structure 30, and the sealing structure 30 is gradually worn. At this time, the lubricant can flow to the gap between the shaft A and the sealing structure 30, and the lubricant is replenished to the shaft A and the sealing structure 30 in time.

[0043] The advantage of the present invention is that the concave structure 40 of the self-lubricating seal 10 can store lubricant. As the friction between the axis A and the sealing structure 30 occurs, the lubricant can be replenished between the axis A and the sealing structure 30 at any time, thereby reducing the wear of the sealing structure 30 and extending the service life of the self-lubricating seal 10.

[0044] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A self-lubricating seal, which is used to be sleeved on an axis and can store a lubricant; characterized in that: The self-lubricating seal has: a through hole, wherein the axis passes through the through hole; A plurality of sealing structures are formed around the wall surface of the through hole, and the sealing structures are in close contact with the axis; At least one concave structure is formed around the wall of the through hole, and one of the concave structures is located between two of the sealing structures; the lubricant is stored in the at least one concave structure.

2. The self-lubricating seal according to claim 1, characterized in that: The cross section of each sealing structure is arc-shaped or pointed.

3. The self-lubricating seal according to claim 1, characterized in that: The shapes of the sealing structures are different.

4. The self-lubricating seal according to claim 1, characterized in that: The sealing structure has three sealing structures in total, and the at least one concave structure has two concave structures in total; the three sealing structures and the two concave structures are arranged alternately.

5. The self-lubricating seal according to claim 1, characterized in that: The self-lubricating seal has a first part and a second part; one of the sealing structures is formed in the first part, and the other sealing structure is formed in the second part; the first part and the second part are fitted together to form one of the at least one concave structures.

6. The self-lubricating seal according to any one of claims 1 to 5, characterized in that: The self-lubricating seal has a reinforcement structure which is arranged around the inside of the self-lubricating seal.

7. The self-lubricating seal according to any one of claims 1 to 5, characterized in that: The self-lubricating seal has a channel, and the channel runs through the outer surface of the self-lubricating seal to the at least one concave structure.

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