CN117249109A - Water pump bearing lubrication and sealing structure of marine diesel engine - Google Patents
Water pump bearing lubrication and sealing structure of marine diesel engine Download PDFInfo
- Publication number
- CN117249109A CN117249109A CN202311417402.7A CN202311417402A CN117249109A CN 117249109 A CN117249109 A CN 117249109A CN 202311417402 A CN202311417402 A CN 202311417402A CN 117249109 A CN117249109 A CN 117249109A
- Authority
- CN
- China
- Prior art keywords
- water pump
- oil
- diesel engine
- support
- marine diesel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000005461 lubrication Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 title claims description 24
- 239000003921 oil Substances 0.000 claims abstract description 105
- 239000010687 lubricating oil Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a marine diesel engine water pump bearing lubrication and seal structure, which comprises a bracket, the inside of support wears to be equipped with the water pump shaft, the water pump shaft with the support rotates to be connected, the lubricating oil chamber has been seted up to the inside of support, the skeleton mounting hole has been seted up for the position of water pump shaft on the support, the internally mounted of skeleton mounting hole has the skeleton oil blanket, the bearing mounting hole has been seted up on the support, the internally mounted of bearing mounting hole has the bearing. The marine diesel engine water pump has the advantages that bearings of the marine diesel engine water pump can be effectively lubricated and lubricating oil can be sealed in the running process.
Description
Technical Field
The application relates to the field of marine diesel engine water pumps, in particular to a marine diesel engine water pump bearing lubrication and sealing structure.
Background
The lubricating and sealing design structure of the marine diesel engine water pump bearing has important significance in marine engineering. The normal operation of a diesel engine water pump bearing of a ship, which is one of the main tools for marine transportation, is directly related to the performance and reliability of the ship.
The bearing lubrication system can effectively reduce friction and abrasion, prolong the service life of the bearing and improve the operation efficiency. At the same time, a good sealing design prevents lubricating oil leakage and foreign matter from entering the bearing system, thereby protecting the bearing from damage and failure.
In marine environments, bearings face challenges such as high temperature, high load and wet corrosion due to the harsh operating conditions and long-term operation.
With respect to the related art described above, the inventors believe that conventional bearing lubrication and sealing structures often fail to meet these requirements, resulting in reduced lubrication performance, seal failure, and reduced bearing life.
Disclosure of Invention
In order to effectively lubricate the bearings of the marine diesel engine water pump and seal the lubricating oil during the running process of the marine diesel engine water pump. The application provides a marine diesel engine water pump bearing lubrication and sealing structure.
The application provides a marine diesel engine water pump bearing lubrication and seal structure adopts following technical scheme:
the utility model provides a marine diesel engine water pump bearing lubrication and seal structure, includes the support, the inside of support wears to be equipped with the water pump shaft, the water pump shaft with the support rotates to be connected, the lubricating oil pocket has been seted up to the inside of support, the skeleton mounting hole has been seted up for the position of water pump shaft on the support, the internally mounted in skeleton mounting hole has the skeleton oil blanket, the bearing mounting hole has been seted up on the support, the internally mounted of bearing mounting hole has the bearing.
Optionally, a backflow oil duct is provided on the support corresponding to a position of the bearing near one side of the skeleton oil seal, and the backflow oil duct communicates the skeleton oil seal with the lubricating oil cavity relatively.
Optionally, an oil inlet is formed in the support, the oil inlet is relatively communicated with the lubricating oil cavity, an oil return is formed in the support, and the oil return is relatively communicated with the lubricating oil cavity.
Optionally, the support is located the inside fixedly connected with throttle plug screw of inlet port, the through-hole has been seted up at throttle plug screw center.
Optionally, the lowest position of the return oil duct is lower than the lowest position of the framework oil seal.
Optionally, the lowest position of the oil return hole is higher than the ball position of the bearing.
Optionally, the lowest position of the oil return hole is located between the framework oil seal and the return oil duct.
Optionally, the diameter of the through hole is between 2mm and 10 mm.
Optionally, the roughness of the surface of the water pump shaft opposite to the framework oil seal is not higher than Ra1.6.
Optionally, the surface of the water pump shaft, which is opposite to the framework oil seal, is subjected to hardening treatment, and the surface hardness is not less than 32HRC.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through design inlet port, oil gallery, oil return runner and lubricating oil pocket on the water pump support, the inside throttle plug screw that increases of inlet port is in order to control the oil feeding amount to the circulation reflux structure that this formed will show the temperature and the pressure that reduce the interior lubricating oil of pump chamber.
2. In order to ensure the requirement of tightness, the combination surface of the framework oil seal and the water pump shaft has higher requirements on roughness and hardness.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a water pump bearing lubrication and sealing structure of a marine diesel engine according to an embodiment of the present application.
Fig. 2 is a cross-sectional view of a marine diesel engine water pump bearing lubrication and sealing structure in an embodiment of the present application.
Fig. 3 is a schematic structural view of a marine diesel engine water pump bearing in an embodiment of the present application at an oil inlet hole position of a cross-sectional view of the lubricating and sealing structure.
Fig. 4 is a schematic structural view of a marine diesel engine water pump bearing in an embodiment of the present application at a location of a return oil passage in a cross-sectional view of the lubricating and sealing structure.
Reference numerals illustrate: 1. a bracket; 11. a lubrication oil chamber; 12. a bearing; 13. a framework oil seal; 14. an oil inlet hole; 141. a throttle screw plug; 15. an oil return hole; 16. a return oil passage; 2. and a water pump shaft.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a marine diesel engine water pump bearing lubrication and sealing structure. Referring to fig. 1 and 2, a lubrication and sealing structure of a water pump bearing of a marine diesel engine comprises a support 1, wherein a lubrication oil cavity 11 is formed in the support 1, a water pump shaft 2 horizontally penetrates through the support 1 and is positioned in the lubrication oil cavity 11, and the water pump shaft 2 is rotationally connected with the support 1.
Bearing mounting holes are respectively formed in two ends of the support 1, which are located on the water pump shaft 2, of the support 1, the bearing 12 is mounted in the support 1 through the bearing mounting holes, and the water pump shaft 2 penetrates through the bearing 12.
The skeleton mounting hole has been seted up to the bearing 12 that support 1 is located inside one side deviate from one side of lubricating oil pocket 11, installs skeleton oil blanket 13 in the inside of support 1 through the skeleton mounting hole, and water pump shaft 2 wears to establish in the inside of skeleton oil blanket 13, and rotates between skeleton oil blanket 13 and the water pump shaft 2 to be connected, seals the lubricating oil in the inside lubricating oil pocket 11 of support 1 through skeleton oil blanket 13.
Referring to fig. 3 and 4, an oil inlet 14 is formed in the surface of the bracket 1, and the oil inlet 14 communicates the inside of the oil chamber 11 with the outside. The surface of the bracket 1 is also provided with an oil return hole 15, and the oil return hole 15 is used for relatively communicating the inside of the lubricating oil cavity 11 with the outside.
The support 1 is located the position fixedly connected with throttle plug 141 of inlet port 14, and the inside of throttle plug 141 is vertical to be seted up the through-hole, and the diameter of through-hole is between 2mm-10mm, and injects lubricating oil through inlet port 14, and throttle plug 141 is used for the throttle to lubricating oil, prevents that too much lubrication has in the lubricating oil pocket 11 and can not timely backward flow, causes the inside oil pressure of lubricating oil pocket 11 to rise, destroys skeleton oil blanket 13 to make skeleton oil blanket 13 sealed inefficacy.
The inside of the bracket 1 is horizontally provided with a return oil duct 16 relative to the position of the skeleton mounting hole, one end of the return oil duct 16 is opposite to the position of the skeleton oil seal 13, the other end of the return oil duct 16 is opposite to the inside of the lubricating oil cavity 11, and the position of the skeleton oil seal 13 is relatively communicated with the inside of the lubricating oil cavity 11 through the return oil duct 16.
After the flow direction of lubricating oil to the framework oil seal 13 can be reduced through the arranged backflow oil duct 16, the framework oil seal 13 is sealed inside the pump cavity, the situation that oil is not stored at the position of the framework oil seal 13 is ensured, the oil pressure is not born, and the tightness of the framework oil seal 13 is improved.
The lubricating oil enters the lubricating oil cavity 11 from the oil inlet hole 14, lubricates the bearing 12, and part of the lubricating oil reaches the skeleton oil seal 13 through the clearance of the bearing 12, is blocked at the pump cavity end by the skeleton oil seal 13, and then returns to the lubricating oil cavity 11 through the oil return flow passage 16.
The lowest end of the return oil passage 16 is lower than the lowest end of the skeleton oil seal 13, so that oil is not stored at the position of the skeleton oil seal 13 and the oil pressure is not born.
The lowest end position of the oil return hole 15 is located between the lowest end of the oil return flow passage 16 and the lowest end of the skeleton oil seal 13, so that the lubricating oil level in the lubricating oil cavity 11 is located between the lowest position of the skeleton oil seal 13 and the lowest position of the balls of the bearing 12, the bearing 12 is ensured to have sufficient lubricating oil for continuous cooling and lubrication, meanwhile, the skeleton oil seal 13 is not subjected to oil pressure, and the sealing failure condition caused by damage of the skeleton oil seal 13 is prevented.
In order to ensure the tightness of the system and avoid abnormal leakage of lubricating oil, special treatment is required to be carried out at the framework oil seal 13. The surface roughness of the combination of the water pump shaft 2 and the framework oil seal 13 is not higher than Ra1.6, hardening treatment is needed, and the surface hardness after the hardening treatment is not less than 32HRC.
The lower roughness requirement is to reduce the heat generated by the relative rotation of the framework oil seal 13 and the water pump shaft 2, and prevent the oil leakage of the rubber of the framework oil seal 13 caused by high-temperature burning; the higher hardness is required to improve the wear resistance of the water pump shaft 2 and prevent oil leakage after the water pump shaft 2 is worn.
The implementation principle of the water pump bearing lubrication and sealing structure of the marine diesel engine is as follows: the lubricating oil enters the lubricating oil cavity 11 from the oil inlet hole 14 through the throttle screw plug 141, the bearing 12 is lubricated by the lubricating oil, part of the lubricating oil reaches the skeleton oil seal 13 through the clearance of the bearing 12, is blocked at the pump cavity end by the skeleton oil seal 13, then returns to the lubricating oil cavity 11 through the oil return flow channel 16, and returns to the oil pan through the oil return hole 15, so that the cycle process of oil inlet, lubrication and oil return is completed.
In the present invention, the term "plurality" means at least two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Claims (10)
1. A marine diesel engine water pump bearing lubrication and seal structure which characterized in that: including support (1), the inside of support (1) wears to be equipped with water pump shaft (2), water pump shaft (2) with support (1) rotate and connect, lubricating oil cavity (11) have been seted up to the inside of support (1), skeleton mounting hole has been seted up for the position of water pump shaft (2) on support (1), the internally mounted of skeleton mounting hole has skeleton oil blanket (13), the bearing mounting hole has been seted up on support (1), the internally mounted of bearing mounting hole has bearing (12).
2. The marine diesel engine water pump bearing lubrication and sealing structure according to claim 1, wherein: and a backflow oil duct (16) is formed in the support (1) at a position opposite to the bearing (12) close to one side of the framework oil seal (13), and the backflow oil duct (16) is used for communicating the framework oil seal (13) with the lubricating oil cavity (11) relatively.
3. The marine diesel engine water pump bearing lubrication and sealing structure according to claim 1, wherein: the oil inlet device is characterized in that an oil inlet hole (14) is formed in the support (1), the oil inlet hole (14) is communicated with the lubricating oil cavity (11) relatively, an oil return hole (15) is formed in the support (1), and the oil return hole (15) is communicated with the lubricating oil cavity (11) relatively.
4. A marine diesel engine water pump bearing lubrication and sealing structure according to claim 3, wherein: the support (1) is located inside the oil inlet hole (14) and fixedly connected with a throttling screw plug (141), and a through hole is formed in the center of the throttling screw plug (141).
5. The marine diesel engine water pump bearing lubrication and sealing structure according to claim 2, wherein: the lowest position of the backflow oil duct (16) is lower than the lowest position of the framework oil seal (13).
6. A marine diesel engine water pump bearing lubrication and sealing structure according to claim 3, wherein: the lowest position of the oil return hole (15) is higher than the ball position of the bearing (12).
7. A marine diesel engine water pump bearing lubrication and sealing structure according to claim 2 or 3, characterized in that: the lowest position of the oil return hole (15) is located between the framework oil seal (13) and the return oil duct (16).
8. The marine diesel engine water pump bearing lubrication and sealing structure according to claim 4, wherein: the diameter of the through hole is between 2mm and 10 mm.
9. The marine diesel engine water pump bearing lubrication and sealing structure according to claim 1, wherein: the roughness of the surface of the water pump shaft (2) opposite to the framework oil seal (13) is not higher than Ra1.6.
10. The marine diesel engine water pump bearing lubrication and sealing structure according to claim 1, wherein: and the surface of the water pump shaft (2) opposite to the framework oil seal (13) is subjected to hardening treatment, and the surface hardness is not less than 32HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311417402.7A CN117249109A (en) | 2023-10-27 | 2023-10-27 | Water pump bearing lubrication and sealing structure of marine diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311417402.7A CN117249109A (en) | 2023-10-27 | 2023-10-27 | Water pump bearing lubrication and sealing structure of marine diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117249109A true CN117249109A (en) | 2023-12-19 |
Family
ID=89131386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311417402.7A Pending CN117249109A (en) | 2023-10-27 | 2023-10-27 | Water pump bearing lubrication and sealing structure of marine diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117249109A (en) |
-
2023
- 2023-10-27 CN CN202311417402.7A patent/CN117249109A/en active Pending
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