A compressor crankcase skeleton oil seal

Abstract

This utility model discloses a compressor crankcase skeleton oil seal, including a rotatable transmission column installed in the crankcase cavity. A sealing assembly is provided on the surface of the transmission column, and two jackets are fitted onto the surface of the crankcase. The sealing assembly includes a skeleton rubber ring fitted onto the surface of the transmission column, two positioning rings fitted onto the surface of the skeleton rubber ring, and an annular groove adapted to the positioning rings on the surface of the skeleton rubber ring. A pressurizing assembly is provided in the inner cavity of the two jackets, and the pressurizing assembly includes multiple arc-shaped pressure plates rotatably connected to the inner cavity of the jackets. An arc-shaped pressure groove is provided on the right side of the surface of the skeleton rubber ring. This utility model, through the sealing assembly, seals the surface of the transmission column and the connection position of the crankcase. Simultaneously, with the cooperation of the jackets and the pressurizing assembly, the skeleton rubber ring is continuously tightened and sealed, thus achieving active tightening sealing and strong sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of natural gas compressor technology, and in particular relates to a compressor crankcase skeleton oil seal. Background Technology

[0002] The compressor crankcase skeleton oil seal is a sealing device installed at the connection between the compressor crankcase and the drive column (crankshaft). It is mainly used to prevent the lubricating oil in the crankcase from leaking out, while blocking external dust, moisture and other impurities from entering, so as to ensure the normal lubrication and operation of the compressor. Its structure is usually based on the skeleton rubber ring, in conjunction with positioning ring, jacket, pressurizing assembly and other components, and achieves the sealing function through mechanical fixing and elastic compression.

[0003] Under high-pressure conditions, the sealing performance of the drive shaft of a natural gas compressor is significantly compromised. The oil seal relies on the interference fit of the rubber lip to achieve a seal. Under continuous high pressure, the rubber material is prone to creep, which increases the gap between the lip and the shaft surface, leading to leakage. Therefore, it is necessary to provide a compressor crankcase skeleton oil seal that adopts a dynamic compression sealing method, continuously applying pressure to the sealing ring to ensure a tight fit between the rubber ring and the shaft surface, thereby improving the sealing effect. Utility Model Content

[0004] The purpose of this invention is to provide a compressor crankcase skeleton oil seal that uses a dynamic compression sealing method to continuously apply pressure to the sealing ring, ensuring that the rubber ring fits tightly against the shaft surface and improving the sealing effect, thereby solving the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A compressor crankcase skeleton oil seal includes a transmission column installed in the inner cavity of the crankcase and rotatable; a sealing assembly is provided on the surface of the transmission column; two jackets are sleeved on the surface of the crankcase; the sealing assembly includes a skeleton rubber ring sleeved on the surface of the transmission column; two positioning rings are sleeved on the surface of the skeleton rubber ring; an annular groove adapted to the positioning ring is opened on the surface of the skeleton rubber ring; a pressurizing assembly is provided in the inner cavity of the two jackets; the pressurizing assembly includes multiple arc-shaped pressure plates rotatably connected to the inner cavity of the jackets; an arc-shaped pressure groove is opened on the right side of the surface of the skeleton rubber ring; the arc-shaped pressure plates are pressed into the inner cavity of the arc-shaped pressure groove; and annular springs are clamped on the surface of the multiple arc-shaped pressure plates.

[0006] Preferably, the positioning ring is pressed into the inner cavity of the annular groove, and the inner cavity of the jacket is provided with an arc groove that matches the positioning ring.

[0007] Preferably, a first screw is provided through the front and rear sides of the positioning ring, and the two positioning rings are fixedly connected by the first screw.

[0008] Preferably, a second screw is provided through the front and rear sides of the top of the sleeve, and the two sleeves are fixedly connected by the second screw.

[0009] Preferably, the surfaces of the two jackets are fitted with a cover, which is welded and fixed to the crankcase.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model seals the surface of the transmission column and the connection position of the crankcase by setting the sealing component. At the same time, with the cooperation of the jacket and the pressure component, the skeleton rubber ring is continuously tightened and sealed, so as to achieve the purpose of active tightening sealing and strong sealing performance.

[0012] 2. This utility model provides a stable installation space for the positioning ring by using the combination of annular groove and arc groove, so that the connection between the jacket, skeleton rubber ring and positioning ring is stable and reliable, ensuring the stability of the skeleton rubber ring during the sealing process.

[0013] 3. This utility model protects the jacket and sealing components by setting up a cover, thereby preventing foreign objects from entering the interior and extending the service life of the oil seal. Attached Figure Description

[0014] in:

[0015] Figure 1 This is a top view schematic diagram of one embodiment of the present utility model;

[0016] Figure 2 This is one embodiment of the present utility model. Figure 1 A magnified view of point A in the middle;

[0017] Figure 3 This is a three-dimensional exploded view of the transmission column, jacket, and pressurization assembly according to one embodiment of the present invention;

[0018] Figure 4 This is an exploded perspective view of a sealing assembly, a jacket, and a pressurizing assembly according to an embodiment of the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Crankcase, 2. Drive column, 3. Sealing assembly, 31. Skeleton rubber ring, 32. Positioning ring, 33. Annular groove, 34. First screw, 35. Arc groove, 4. Jacket, 5. Pressurizing assembly, 51. Arc-shaped pressure plate, 52. Arc-shaped pressure groove, 53. Annular spring, 54. Second screw, 55. Seal. Detailed Implementation

[0021] In the following description, embodiments of the compressor crankcase skeleton oil seal of this utility model will be described with reference to the accompanying drawings.

[0022] Figure 1-4 This invention illustrates a compressor crankcase oil seal according to an embodiment of the present invention. It includes a rotatable transmission column 2 installed within the crankcase 1. A sealing assembly 3 is provided on the surface of the transmission column 2. Two jackets 4 are fitted onto the surface of the crankcase 1. The sealing assembly 3 includes a skeleton rubber ring 31 fitted onto the surface of the transmission column 2. Two positioning rings 32 are fitted onto the surface of the skeleton rubber ring 31. An annular groove 33 adapted to the positioning rings 32 is formed on the surface of the skeleton rubber ring 31. The positioning rings 32 are pressed into the inner cavity of the annular groove 33. An arcuate groove 35 adapted to the positioning rings 32 is formed in the inner cavity of the jacket 4. Through the cooperation of the annular groove 33 and the arcuate groove 35, a stable installation space is provided for the positioning rings 32, ensuring a stable and reliable connection between the jackets 4, the skeleton rubber ring 31, and the positioning rings 32, thus ensuring the stability of the skeleton rubber ring 31 during the sealing process. The positioning ring 32 has a first screw 34 through its front and rear sides, and the two positioning rings 32 are fixedly connected by the first screw 34. The top of the jacket 4 has a second screw 54 through its front and rear sides, and the two jackets 4 are fixedly connected by the second screw 54. The surface of the two jackets 4 is covered with a sealing sleeve 55, which is welded and fixed to the crankcase 1. The sealing sleeve 55 is used to shield and protect the jackets 4 and the sealing assembly 3, thereby preventing foreign objects from entering their interior and extending the service life of the oil seal. The inner cavity of the two jackets 4 is provided with a pressure assembly 5, which includes multiple arc-shaped pressure plates 51 rotatably connected to the inner cavity of the jacket 4. An arc-shaped pressure groove 52 is opened on the right side of the surface of the skeleton rubber ring 31, and the arc-shaped pressure plates 51 are pressed into the inner cavity of the arc-shaped pressure groove 52. The surface of the multiple arc-shaped pressure plates 51 is clamped with annular springs 53.

[0023] Working principle: When using this utility model, the user first places the skeleton rubber ring 31 on the surface of the transmission column 2, then the user engages the two positioning rings 32 in the inner cavity of the annular groove 33 and fixes the two positioning rings 32 with the first screw 34. Then the user places the two clips 4 on the surface of the skeleton rubber ring 31, so that the arc groove 35 covers the surface of the positioning ring 32 and the arc-shaped pressure plate 51 is located in the inner cavity of the arc-shaped pressure groove 52. Then the clips 4 are fixed with the second screw 54, and the annular spring 53 is stretched and placed on the surface of the arc-shaped pressure plate 51, so that the multiple arc-shaped pressure plates 51 have a tension force towards the axis of the transmission column 2. The arc-shaped pressure plates 51 elastically compress the inner wall of the arc-shaped pressure groove 52. During use, the arc-shaped pressure plates 51 continuously compress the inner wall of the arc-shaped pressure groove 52, so that the skeleton rubber ring 31 is tightly attached to the surface of the transmission column 2, and the connection between the transmission column 2 and the crankcase 1 is sealed.

[0024] In summary, the compressor crankcase oil seal, through the setting of the sealing component 3, seals the surface of the transmission column 2 and the connection position of the crankcase 1. At the same time, with the cooperation of the jacket 4 and the pressurizing component 5, the skeleton rubber ring 31 is continuously tightened and sealed, thus achieving the purpose of active tightening sealing and strong sealing performance.

Claims

1. A compressor crankcase skeleton oil seal characterized by, The transmission column (2) is installed in the inner cavity of the crankcase (1) and is rotatable. A sealing assembly (3) is provided on the surface of the transmission column (2). Two jackets (4) are fitted on the surface of the crankcase (1). The sealing assembly (3) includes a skeleton rubber ring (31) fitted on the surface of the transmission column (2). Two positioning rings (32) are fitted on the surface of the skeleton rubber ring (31). An annular groove (33) adapted to the positioning ring (32) is opened on the surface of the skeleton rubber ring (31). A pressurizing assembly (5) is provided in the inner cavity of the two jackets (4). The pressurizing assembly (5) includes multiple arc-shaped pressure plates (51) rotatably connected to the inner cavity of the jacket (4). An arc-shaped pressure groove (52) is opened on the right side of the surface of the skeleton rubber ring (31). The arc-shaped pressure plate (51) is pressed into the inner cavity of the arc-shaped pressure groove (52). An annular spring (53) is clamped on the surface of the multiple arc-shaped pressure plates (51).

2. A compressor crankcase skeleton oil seal according to claim 1, characterized in that, The positioning ring (32) is pressed into the inner cavity of the annular groove (33), and the inner cavity of the sleeve (4) is provided with an arc groove (35) that matches the positioning ring (32).

3. A compressor crankcase skeleton oil seal according to claim 2, characterized in that, The positioning ring (32) is provided with a first screw (34) through its front and rear sides, and the two positioning rings (32) are fixedly connected by the first screw (34).

4. A compressor crankcase skeleton oil seal according to claim 3, characterized in that, The front and rear sides of the top of the sleeve (4) are both provided with second screws (54), and the two sleeves (4) are fixedly connected by the second screws (54).

5. A compressor crankcase skeleton oil seal according to claim 4, characterized in that, The surfaces of the two jackets (4) are fitted with sleeves (55), which are welded and fixed to the crankcase (1).

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