Guide bearing shell cooling structure for labyrinth compressor
By improving the open cooling channel structure and lubricating oil medium of the guide bearing housing of the maze compressor, the problems of traditional cooling channel cleaning difficulties and circulating water leakage are solved, and the cooling effect and sealing are improved.
Patent Information
- Application Number
- CN202422043227.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The cast sand in the cooling channel of guide bearings of traditional maze compressors is difficult to clean, affecting the cooling effect, and the circulating water is prone to leak into the lubricating oil pool, resulting in pollution.
The open cooling channel structure is adopted. The internal channel is machined and a sealing cover is equipped with a sealing cover. The cooling medium is changed to lubricating oil. Bolts and O-rings are used to ensure the seal. The bolts and cover plate are locked by wire to avoid loosening.
It is achieved to facilitate the removal of casting residues, ensure the effectiveness of the cooling channel, avoid the risk of circulating water leaking into the lubricating oil tank, and improve the cooling effect and sealing.
Smart Images
Figure CN223089493U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an improved invention of a labyrinth compressor, in particular to an improved invention of a cooling structure for a guide bearing housing of a labyrinth compressor. Background Art
[0002] As a key component for guiding and positioning in a labyrinth compressor, the guide bearing plays a crucial role. Due to the heat generated by the mutual friction between the piston rod and the guide bearing, the traditional guide bearing is integrally cast with cooling channels on the housing. It has been found in use that the casting sand in the cooling channels is difficult to clean, which affects the cooling effect, and it is uncertain when it will fall off, polluting the cooling medium.
[0003] The cooling medium of the traditional guide bearing is circulating water. When the sealing gasket fails or the joint is disassembled and assembled during maintenance, the circulating water is likely to leak into the lubricating oil sump. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cooling structure for a guide bearing housing of a labyrinth compressor.
[0005] To solve the above technical problem, the utility model is implemented by adopting the following technical scheme: The cooling structure for a guide bearing housing of a labyrinth compressor includes a guide bearing housing. A scraping oil ring and a guide bearing are arranged up and down at the center of the guide bearing housing. Corresponding scraping oil cavities and cooling channels are arranged up and down in the guide bearing housing. It is characterized in that: The cooling channel is an open structure. After the internal channel is cast, it is formed by machining, and a sealing cover plate is externally provided to form the cooling channel. The cooling channel is filled with a cooling medium. A medium inlet and its joint are provided on the cover plate. An oil return hole communicating the scraping oil cavity with the lubricating hole of the guide bearing is provided on the guide bearing housing.
[0006] The cover plate and the guide bearing housing are connected by bolts. A sealing gasket is provided between the bolt and the cover plate. A loosening prevention hole is provided on the bolt. Corresponding bolts are locked by passing a wire through them.
[0007] The bolt passes through the cooling channel, and the position of the bolt is far from the central friction part.
[0008] An O-shaped sealing ring is provided between the guide bearing housing and the cover plate.
[0009] The cooling medium is lubricating oil.
[0010] The scraping oil ring is fixed between the flange and the pressing plate.
[0011] The beneficial effects of the present utility model are as follows: The improved cooling structure of the guide bearing housing for the labyrinth compressor has an open cooling channel structure. The internal channel is formed by machining after casting, which is convenient for removing casting residues. A sealing cover plate is externally provided to form the cooling channel, and the cooling channel is filled with a cooling medium, which is lubricating oil. This avoids the leakage of circulating water into the lubricating oil sump due to gasket failure or when disassembling and assembling joints during maintenance. Brief Description of the Drawings
[0012] The following further elaborates on the specific implementation manners of the present utility model in conjunction with the drawings.
[0013] Figure 1 It is a structural schematic diagram of the present utility model. Specific Implementation Manner
[0014] The drawings show the structure of the present utility model, and the following further describes its relevant details in conjunction with the drawings. In this embodiment, the cooling structure of the guide bearing housing for the labyrinth compressor includes a guide bearing housing 1. A scraping oil ring 2 and a guide bearing 3 are arranged vertically at the center of the guide bearing housing 1. Corresponding scraping oil cavities 5 and cooling channels 6 are arranged vertically inside the guide bearing housing 1. The cooling channel 6 has an open structure. The internal channel is formed by machining after casting, which is convenient for removing casting residues. A sealing cover plate 7 is externally provided to form the cooling channel 6. An O-ring 8 is arranged between the guide bearing housing 1 and the cover plate 7. The cooling channel 6 is filled with a cooling medium. A medium inlet 13 and its joint 14 are arranged on the cover plate 7. An oil return hole 15 communicating the scraping oil cavity 5 with the lubricating hole of the guide bearing 3 is arranged on the guide bearing housing 1. All the oil return holes 15 are concentrated towards the center. The lubricating oil scraped by the scraping oil ring 2 flows to the friction surface to improve the friction environment.
[0015] As a further improved specific implementation manner, the cover plate 7 and the guide bearing housing 1 are connected by bolts 9. A sealing gasket 10 is arranged between the bolt 9 and the cover plate 7. A lock prevention hole is arranged on the bolt 9. Correspondingly, the bolts 9 are locked by a wire 4 passing through between the bolts 9 to eliminate the hidden danger of bolt loosening and falling off.
[0016] As a further improved specific implementation manner, the bolt 9 passes through the cooling channel 6, and the position of the bolt 9 is far from the central friction part to ensure that it does not affect the cooling channel 6 and there is no blind area for the coolant.
[0017] As a further improved specific implementation manner, the cooling medium is lubricating oil. The cooling medium is changed from circulating water to lubricating oil to avoid the leakage of circulating water into the lubricating oil sump due to gasket failure or when disassembling and assembling joints during maintenance.
[0018] As a specific implementation of further improvement, the oil scraping ring 2 is fixed between the flange 11 and the pressing plate 12. The pressing plate 12 is located at the upper end of the oil scraping ring 2, and the flange 11 is located between the oil scraping ring 2 and the guiding bearing 3. The pressing plate 12 and the flange 11 are respectively fixed to the guiding bearing housing 1.
[0019] In summary, the above are only the preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A cooling structure for a guide bearing housing of a labyrinth compressor, comprising a guide bearing housing, wherein an oil scraping ring and a guide bearing are arranged up and down at the center of the guide bearing housing, and an oil scraping cavity and a cooling channel are arranged up and down in the corresponding guide bearing housing, and it is characterized in that: The cooling channel is of an open structure. After the internal channel is cast, it is formed by machining, and a sealing cover plate is arranged outside to form the cooling channel. The cooling channel is filled with a cooling medium, and a medium inlet and its joint are provided on the cover plate. An oil return hole communicating the oil scraping cavity with the lubrication hole of the guide bearing is provided on the guide bearing housing; the cover plate and the guide bearing housing are connected by bolts, a sealing gasket is provided between the bolts and the cover plate, a locking prevention hole is provided on the bolts, and corresponding bolts are locked by passing a wire through them; the oil scraping ring is fixed between the flange plate and the pressing plate.
2. The cooling structure of the guide bearing housing for a labyrinth compressor according to claim 1, characterized in that: The bolts pass through the cooling channel, and the positions of the bolts are away from the central friction part.
3. The cooling structure of the guide bearing housing for a labyrinth compressor according to claim 1, wherein: An O-ring seal is provided between the guide bearing housing and the cover plate.
4. The cooling structure of the guide bearing housing for a labyrinth compressor according to claim 1, characterized in that: The cooling medium is lubricating oil.