Compressor

Abstract

The utility model relates to the technical field of air compression, in particular to a compressor. In order to reduce the production and assembly cost of the compressor and prolong the service life of the compressor, the utility model provides the compressor which comprises a bearing seat and an oil seal, the bearing seat is internally provided with an oil seal groove for installing the oil seal, and the upper edge of the side wall of the oil seal groove is provided with a plurality of oil seal clamping bulges. According to the compressor, the main oil seal is clamped through the oil seal clamping protrusion located on the upper edge of the side wall of the oil seal groove, assembling is easy and convenient, the production and assembling cost can be reduced, the strength of the bearing seat cannot be affected, the service life of the bearing seat can be prolonged, and then the service life of the compressor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air compression, in particular to a compressor. Background Art

[0002] In existing compressor rotors, after the oil seal is installed in the bearing seat, the oil seal is directly pressed against the bearing seat by a retaining spring positioned in a retaining spring groove. While retaining the oil seal with a retaining spring can improve the installation stability of the oil seal in the bearing seat, it also presents the following problems:

[0003] 1. The circlip is installed in the circlip groove on the bearing seat, which makes installation difficult, resulting in an increase in the assembly cost of the rotor and, in turn, the assembly cost of the compressor;

[0004] 2. In order to install the retaining ring, a retaining ring groove needs to be opened on the bearing seat, which will not only increase the processing cost of the bearing seat and increase the production cost of the compressor, but also reduce the strength of the bearing seat, affecting the service life of the bearing seat and thus affecting the service life of the compressor. Utility Model Content

[0005] In order to reduce the production and assembly costs of the compressor and extend the service life of the compressor, the present invention proposes a compressor, which includes a bearing seat and an oil seal. The bearing seat is provided with an oil seal groove for installing the oil seal, and the upper edge of the side wall of the oil seal groove is provided with a plurality of oil seal clamping protrusions. In this way, in the process of assembling the compressor of the present invention, after the oil seal is fitted into the oil seal groove in the bearing seat, the pressure rod can be directly used to squeeze the upper edge of the side wall of the oil seal groove to form a plurality of oil seal clamping protrusions to clamp the main oil seal, thereby preventing the oil seal from shifting along the central axis direction of the main shaft when rotating with the main shaft, thereby causing the seal to be realized and affecting the performance of the compressor. It can be seen that the compressor of the present invention is simple and convenient to assemble by clamping the main oil seal with the oil seal clamping protrusions located at the upper edge of the side wall of the oil seal groove, which can reduce the production and assembly costs, and will not affect the strength of the bearing seat. It can extend the service life of the bearing seat, thereby extending the service life of the compressor of the present invention.

[0006] Preferably, the compressor includes a main shaft having an oil seal groove defined therein. When the oil seal is placed on the main shaft, the oil seal lip on the inner edge of the oil seal engages in the oil seal groove. Thus, when the main shaft and bearing housing are assembled together, the oil seal lip on the inner edge of the oil seal engages in the oil seal groove, thereby improving the sealing effect between the oil seal and the main shaft. Furthermore, the inner edge of the oil seal is configured as a sloped structure. Thus, the oil seal lip on the inner edge of the oil seal forms a linear seal with the main shaft, reducing the operating resistance of the oil seal to the main shaft, thereby reducing the energy consumption of the compressor of the present invention and, in turn, reducing the operating cost of the compressor of the present invention.

[0007] Preferably, the oil seal includes a support skeleton and a sealing ring, and the support skeleton is arranged at the bottom of the sealing ring. In this way, by arranging a support skeleton in the oil seal, the sealing ring can be effectively supported by the support skeleton, thereby preventing the sealing ring from deforming and affecting the sealing effect of the oil seal. Further, the support skeleton is arranged at the bottom of the middle plane of the sealing ring. In this way, when making the oil seal, it is only necessary to place the support skeleton in the injection groove in the oil seal injection mold, which can reduce the difficulty of injection molding of the oil seal, thereby reducing the production cost of the compressor of the present invention. Further preferably, the support skeleton is an annular structure made of cold-rolled steel, and the sealing ring is made of HNBR rubber material. In this way, the support skeleton with an annular structure made of cold-rolled steel material is simple, convenient and low-cost to prepare; the sealing ring is made of HNBR rubber material. Since the hardness of the HNBR rubber material is relatively low, it is convenient for the inner edge of the oil seal to contact with the main shaft, thereby improving the sealing performance of the oil seal.

[0008] Preferably, the oil seal clamping protrusions are evenly distributed on the upper edge of the side wall of the oil seal groove. In this way, a plurality of evenly distributed oil seal clamping protrusions are provided on the upper edge of the side wall of the oil seal groove, which can improve the installation stability of the oil seal in the oil seal groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic structural diagram of a first embodiment of the compressor of the present utility model;

[0010] Figure 2 for Figure 1 AA cross-sectional structural diagram in;

[0011] Figure 3 This is a structural diagram of a second embodiment of the compressor of the present utility model;

[0012] Figure 4 for Figure 3 Schematic diagram of BB cross-section structure in. DETAILED DESCRIPTION

[0013] Next, combine Figures 1 to 4 , the compressor of the utility model is described in detail.

[0014] Example 1:

[0015] like Figure 1 and 2As shown, the compressor of the present invention includes a bearing seat 1 and an oil seal 2. The bearing seat 1 is provided with an oil seal groove (not shown) for mounting the oil seal 2, and the upper edge of the side wall of the oil seal groove is provided with multiple oil seal retaining protrusions 11. Thus, during the assembly process of the compressor of the present invention, after the oil seal 2 is assembled into the oil seal groove of the bearing seat 1, a pressure rod can be directly used to squeeze the upper edge of the side wall of the oil seal groove to form multiple oil seal retaining protrusions 11 to retain the main oil seal 2. This prevents the oil seal 2 from shifting along the central axis of the main shaft 3 when rotating with the main shaft 3, thereby preventing the seal from being lost and affecting the performance of the compressor. The compressor of the present invention uses the oil seal retaining protrusions 11 located on the upper edge of the side wall of the oil seal groove to retain the main oil seal 2, making assembly simple and convenient, reducing production and assembly costs, and not affecting the strength of the bearing seat 1. This can extend the service life of the bearing seat 1 and, thereby, the service life of the compressor of the present invention. Preferably, the oil seal retaining protrusions 11 are evenly distributed along the upper edge of the side wall of the oil seal groove. In this way, a plurality of evenly distributed oil seal locking protrusions 11 are provided on the upper edge of the side wall of the oil seal groove, which can improve the installation stability of the oil seal 2 in the oil seal groove.

[0016] Example 2:

[0017] like Figure 3 and 4As shown, compared to Example 1, in this embodiment, an oil seal groove 31 is provided on the main shaft 3 of the compressor. When the oil seal 2 is mounted on the main shaft 3, the oil seal lip 201 on the inner edge of the oil seal 2 is retained in the oil seal groove 31. Thus, when the main shaft 3 and the bearing housing 1 are assembled together, the oil seal lip 201 on the inner edge of the oil seal 2 is retained in the oil seal groove 11, thereby improving the sealing effect between the oil seal 2 and the main shaft 3. Preferably, the inner edge of the oil seal 2 is configured as a sloped structure. Thus, the oil seal lip 201 on the inner edge of the oil seal 2 forms a linear seal with the main shaft 3, reducing the operating resistance of the oil seal 2 on the main shaft 3, thereby reducing the energy consumption of the compressor of the present invention and, in turn, the operating cost of the compressor of the present invention. Preferably, the oil seal 2 includes a sealing ring 21 and a support frame 22, with the support frame 22 disposed at the bottom of the sealing ring 21. In this way, a support skeleton 22 is provided in the oil seal 2, and the support skeleton 22 can be used to effectively support the sealing ring 21, thereby preventing the sealing ring 21 from deforming and affecting the sealing effect of the oil seal 2. Preferably, the support skeleton 22 is provided at the bottom of the middle plane of the sealing ring 21. In this way, when making the oil seal 2, it is only necessary to place the support skeleton 22 in the injection groove in the oil seal injection mold, which can reduce the difficulty of injection molding of the oil seal 2, thereby reducing the production cost of the compressor of the present invention. Preferably, the support skeleton 22 is an annular structure made of cold-rolled steel, and the sealing ring 21 is made of HNBR rubber material. In this way, the support skeleton 22 with an annular structure made of cold-rolled steel material is simple, convenient and low-cost to prepare; the sealing ring 21 is made of HNBR rubber material. Since the hardness of the HNBR rubber material is relatively low, it is convenient for the inner edge of the oil seal 2 to be in sealing contact with the main shaft 3, thereby improving the sealing performance of the oil seal 2.

Claims

1. A compressor, characterized in that: The compressor comprises a bearing seat and an oil seal. An oil seal groove for installing the oil seal is provided in the bearing seat, and a plurality of oil seal clamping protrusions are provided on the upper edge of the side wall of the oil seal groove.

2. The compressor according to claim 1, characterized in that The compressor comprises a main shaft, which is provided with an oil seal groove. When the oil seal is sleeved on the main shaft, the oil seal lip on the inner edge of the oil seal is clamped in the oil seal groove.

3. The compressor according to claim 2, characterized in that The inner edge of the oil seal is arranged as a slope structure.

4. The compressor according to any one of claims 1 to 3, characterized in that: The oil seal includes a supporting frame and a sealing ring, and the supporting frame is arranged at the bottom of the sealing ring.

5. The compressor according to claim 4, characterized in that The support frame is arranged at the bottom of the middle plane of the sealing ring.

6. The compressor according to claim 5, characterized in that The support frame is a ring structure made of cold-rolled steel, and the sealing ring is made of HNBR rubber material.

7. The compressor according to any one of claims 1 to 3, characterized in that: The oil seal clamping protrusions are evenly distributed on the upper edge of the side wall of the oil seal groove.

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