Non-contact engine oil sealing structure

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to a non-contact engine oil sealing structure which comprises a sealing valve, the sealing valve comprises a sealing seat and a sealing ring, the sealing ring is fixedly installed on the inner wall of the sealing seat, and a groove is formed in the inner wall, close to the crankshaft end of a compressor, of the sealing seat. An annular limiting groove is formed in the inner wall, close to the machine body end, of the sealing base, a hole check ring is fixedly installed in the limiting groove, and the hole check ring is used for ensuring that the relative positions of parts are not changed. And the sealing structure is not in direct contact with the crankshaft of the compressor, so that abrasion is reduced, the service life of parts is prolonged, and the parts are prevented from being damaged due to high temperature.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a non-contact oil sealing structure. Background Technology

[0002] The oil seal structure is a very important part of the engine. Oil can form an oil film on the surface of parts, reducing direct contact between parts and reducing friction and wear. The handling of oil becomes the most important part of the entire operation process. Traditional contact oil seal structures are prone to wear and heat generation, and it is difficult to achieve zero oil leakage with contact oil seal structures. Therefore, a non-contact oil seal structure is provided. Utility Model Content

[0003] The main purpose of this invention is to provide a non-contact oil sealing structure to solve the problems of wear, overheating and oil leakage mentioned in the background art.

[0004] To achieve the above objectives, according to one aspect of the present invention, a non-contact oil sealing structure is provided, including a sealing valve. The sealing valve includes a sealing seat and a sealing ring. The sealing ring is fixedly installed on the inner wall of the sealing seat. A groove is formed on the inner wall of the sealing seat near the crankshaft end of the compressor. An annular limiting groove is formed on the inner wall of the sealing seat near the machine body end. A retaining ring for a hole is fixedly installed in the limiting groove. The retaining ring for a hole is used to ensure that the relative position between the parts remains unchanged.

[0005] As a preferred technical solution of this utility model: the sealing valve is fixedly installed at the connection between the compressor crankshaft and the machine body.

[0006] As a preferred technical solution of this utility model: the sealing seat is composed of a front seat and a rear seat, the inner wall of the front seat is provided with two annular grooves of the same structure, and the side wall of the front seat is provided with an exhaust hole.

[0007] As a preferred embodiment of this utility model, the inner diameter of the front seat is smaller than that of the rear seat.

[0008] As a preferred technical solution of this utility model: the sealing ring is tightly fitted with the retaining ring for the hole, and the sealing ring is snapped into the connection between the front seat and the rear seat.

[0009] As a preferred technical solution of this utility model: the retaining ring for holes is a ring with a notch, and holes are provided at both ends of the retaining ring for holes.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In this non-contact oil sealing structure, a groove is provided so that when the compressor crankshaft rotates, the oil forms an oil film on the sealing end face, preventing oil leakage and providing a good sealing effect. In addition, the sealing structure does not directly contact the compressor crankshaft, reducing wear, extending the service life of parts, and avoiding damage to parts due to high temperature. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the connection structure between the sealing valve and the compressor crankshaft in a preferred embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the sealing valve structure in a preferred embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the sealing seat structure in a preferred embodiment of the present invention;

[0015] Figure 4 This is a cross-sectional view of the sealing seat in a preferred embodiment of the present invention;

[0016] Illustration:

[0017] 1. Sealing valve; 2. Sealing seat; 3. Sealing ring; 4. Limiting groove; 5. Hole retaining ring; 6. Groove; 7. Compressor crankshaft; 8. Machine body; 9. Front seat; 10. Rear seat; 11. Exhaust port. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0019] Please see Figures 1-4 As shown, the purpose of this embodiment is to provide a non-contact oil sealing structure, including a sealing valve 1. The sealing valve 1 includes a sealing seat 2 and a sealing ring 3. The sealing ring 3 is fixedly installed on the inner wall of the sealing seat 2. A groove 6 is provided on the inner wall of the sealing seat 2 near the end of the compressor crankshaft 7. An annular limiting groove 4 is provided on the inner wall of the sealing seat 2 near the end of the machine body 8. A retaining ring 5 for holes is fixedly installed in the limiting groove 4. The retaining ring 5 for holes is used to ensure that the relative position between the parts remains unchanged.

[0020] The sealing valve 1 is fixedly installed at the connection between the compressor crankshaft 7 and the machine body 8. Because the compressor crankshaft 7 rotates, the sealing valve 1 is more effective at sealing the machine body oil.

[0021] The sealing seat 2 consists of a front seat 9 and a rear seat 10. The inner wall of the front seat 9 has two identical annular grooves 6, and the side wall of the front seat 9 has an exhaust hole 11. The oil forms an oil film on the sealing end face through the rotation of the compressor crankshaft 7.

[0022] The inner diameter of the front seat 9 is smaller than that of the rear seat 10, which facilitates sealing.

[0023] The sealing ring 3 fits tightly with the retaining ring 5 for the hole, and the sealing ring 3 is snapped into the connection between the front seat 9 and the rear seat 10. The sealing ring 3 and the retaining ring 5 for the hole together can improve the sealing performance and increase the pressure bearing capacity.

[0024] The retaining ring 5 is a notched ring with holes at both ends. The retaining ring 5 is used to prevent the sealing ring 3 from loosening and slipping out.

[0025] In practical use, the sealing valve 1 is fixedly installed at the connection between the compressor crankshaft 7 and the machine body 8, and is fixed with bolts. The oil forms an oil film on the groove 6 and the sealing end face through the rotation of the compressor crankshaft 7. The sealing ring 3 and the hole retaining ring 5 fit tightly together, which improves the sealing performance of the sealing valve 1.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A non-contact oil sealing structure, including a sealing valve (1), characterized in that: The sealing valve (1) includes a sealing seat (2) and a sealing ring (3). The sealing ring (3) is fixedly installed on the inner wall of the sealing seat (2). A groove (6) is opened on the inner wall of the sealing seat (2) near the crankshaft (7) of the compressor. A circular limiting groove (4) is opened on the inner wall of the sealing seat (2) near the machine body (8). A retaining ring (5) for holes is fixedly installed in the limiting groove (4).

2. The non-contact oil sealing structure according to claim 1, characterized in that: The sealing valve (1) is fixedly installed at the connection between the compressor crankshaft (7) and the machine body (8).

3. The non-contact oil sealing structure according to claim 1, characterized in that: The sealing seat (2) consists of a front seat (9) and a rear seat (10). The inner wall of the front seat (9) is provided with two circular grooves (6) of the same structure, and the side wall of the front seat (9) is provided with an exhaust hole (11).

4. The non-contact oil sealing structure according to claim 3, characterized in that: The inner diameter of the front seat (9) is smaller than that of the rear seat (10).

5. The non-contact oil sealing structure according to claim 1, characterized in that: The sealing ring (3) fits tightly against the retaining ring (5) for the hole, and the sealing ring (3) is snapped into the connection between the front seat (9) and the rear seat (10).

6. The non-contact oil sealing structure according to claim 1, characterized in that: The retaining ring (5) for holes is a ring with a notch, and holes are provided at both ends of the retaining ring (5).

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