CN220870589U - Pump shaft sealing structure of lubricating oil pump - Google Patents
Pump shaft sealing structure of lubricating oil pump Download PDFInfo
- Publication number
- CN220870589U CN220870589U CN202322922080.3U CN202322922080U CN220870589U CN 220870589 U CN220870589 U CN 220870589U CN 202322922080 U CN202322922080 U CN 202322922080U CN 220870589 U CN220870589 U CN 220870589U
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- CN
- China
- Prior art keywords
- lubricating oil
- oil pump
- pump shaft
- connecting cylinder
- sealing
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Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 65
- 238000007789 sealing Methods 0.000 title claims abstract description 59
- 230000001050 lubricating effect Effects 0.000 claims abstract 2
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 235000014121 butter Nutrition 0.000 description 8
- 239000000314 lubricant Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a pump shaft sealing structure of a lubricating oil pump, and relates to the technical field of lubricating systems. The utility model comprises a connecting cylinder, an inner fixing disk and a limiting component, wherein the limiting component is fixed on the inner wall of the connecting cylinder in an annular array, the inner fixing disks are fixed at two ends of the limiting component in the connecting cylinder, the two inner fixing disks are mutually symmetrical, and a sealing convex ring is fixed at one end of the inner fixing disk, which is far away from the limiting component. The connecting cylinder, the inner fixed disc and the limiting component are arranged, so that the problems that the two ends of the pump shaft of the lubricating oil pump are required to be respectively used inconveniently when the pump shaft of the lubricating oil pump is closed during working, and the working efficiency of the lubricating oil pump is reduced due to larger resistance to the pump shaft of the sealing component during working are solved, and the utility model has the advantages that: when the lubricating oil pump is used, the two ends of the lubricating oil pump shaft can be synchronously sealed through the assembly during working, the lubricating oil pump is convenient to use, the resistance to the pump shaft is smaller, and the working efficiency is better.
Description
Technical Field
The utility model belongs to the technical field related to lubrication systems, and particularly relates to a pump shaft sealing structure of a lubricating oil pump.
Background
Pumps for pumping lubricating oil are called lubricating oil pumps, and are classified into: a main lubricating oil pump for providing lubricating oil for a main engine, a booster lubricating oil pump for providing lubricating oil for a booster, a stern tube lubricating oil pump for providing lubricating oil for a stern tube bearing, a lubricating oil delivery pump for transferring lubricating oil from a lubricating oil tank to a daily lubricating oil cabinet and the like, wherein two main lubricating oil pumps are needed, one of the main lubricating oil pumps is for standby, and a large diesel engine generally adopts a vertical electric screw pump; a medium diesel engine and a turbine commonly use a vertical electric gear pump; the lubricating oil pump used in the middle and small diesel engines is usually a gear pump driven by a main engine, one of the lubricating oil pumps is usually provided with two gear pumps, if the main engine is provided with one of the lubricating oil pumps, a screw pump is usually adopted to ensure that the lubricating oil pressure is stable and the lubricating oil flows uniformly, a vacuum gauge is generally arranged on a suction end pipe of the pump, the vacuum degree is not more than 0.03MPa for ensuring normal oil suction, a safety valve and a bypass valve for regulating the pressure and the flow are arranged on a discharge pipe of the pump, and the set pressure is 1.1 times of the normal oil supply pressure of a pipeline, but the device still has the following defects in actual use:
When the lubricating oil pump works, the pump shaft is directly sealed in the lubricating oil pump through a corresponding structure, and a gap is provided, so that the pump shaft rotates in the lubricating oil pump, the position led out by the pump shaft connection is sealed, and when the lubricating oil pump is sealed, only one gap position is sealed, and when the lubricating oil pump is used, the sealing of different positions is inconvenient;
After the lubricating oil pump is installed, the pump shaft is required to drive the working parts therein to rotate under the action of the power source, and because a fastening and sealing position is arranged between the sealing component and the pump shaft, large resistance is generated to the rotation of the pump shaft during use, and the working efficiency of the lubricating oil pump is reduced during working.
Disclosure of utility model
The utility model aims to provide a sealing structure of a pump shaft of a lubricating oil pump, which solves the problems that the sealing ends of the pump shaft of the lubricating oil pump are required to be used respectively during working and the working efficiency of the lubricating oil pump is reduced due to the fact that the resistance to the pump shaft of the sealing assembly is large during working by arranging a connecting cylinder, an inner fixing disc and a limiting assembly.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to a pump shaft sealing structure of a lubricating oil pump, which comprises a connecting cylinder, an inner fixing disc and a limiting assembly, wherein the limiting assembly is fixed on the inner wall of the connecting cylinder in an annular array, the inner fixing discs are fixed at two ends of the limiting assembly in the connecting cylinder, the two inner fixing discs are mutually symmetrical, a sealing convex ring is fixed at one end of the inner fixing disc, which is far away from the limiting assembly, and when the lubricating oil pump shaft sealing structure is in operation, the limiting assembly is sealed in the connecting cylinder through the connecting cylinder, the connecting cylinder is limited through the inner fixing disc in a matched mode, and the inner cylinder is limited in the connecting cylinder through the limiting assembly.
Further, both ends of the connecting cylinder periphery side are fixed with outer installing rings, the outer installing rings are fixed with installing holes in annular arrays, and the connecting cylinder provides an installing effect through the outer installing rings when in operation.
Further, the inside central authorities of internal fixation dish have seted up the internal orifice, the diameter of sealed bulge loop is greater than the internal diameter of internal orifice, and has link up in the internal fixation dish in sealed bulge loop outside and have seted up sealed screw, sealed screw sets up between two adjacent restriction subassemblies, and the internal fixation dish is at the during operation, provides the guide that the lubricating oil pump shaft got into the inner tube through the internal orifice, provides corresponding butter injection connecting cylinder through sealed screw.
Further, sealing screw is connected with sealing bolt in the internal thread of sealing screw, sealing bolt keeps away from limiting assembly's one end and internal fixation dish and keeps away from limiting assembly's an end face parallel and level, sealing bolt seals sealing screw.
Further, the two inner fixing plates are respectively fixed on the inner walls at the two ends of the connecting cylinder, and one end face of the inner fixing plate, which is far away from the limiting assembly, is flush with the end face of the connecting cylinder, so that the sealing convex ring can fully seal the pump shaft of the lubricating oil pump.
Further, the restriction subassembly includes spread groove, circulation groove and roller bearing, be annular array fixed with the spread groove on the connecting tube inner wall, swing joint has the roller bearing in the spread groove, a plurality of circulation grooves have been seted up to the equidistance in the connecting groove outside, the inside central authorities of connecting tube are provided with the inner tube, and the inner tube is the roller bearing that annular array set up in the connecting tube and contacts each other, the both ends of inner tube contact each other with two internal fixation discs respectively, and the internal diameter of inner tube is less than the internal diameter of internal orifice, restriction subassembly is at the during operation, restricts the roller bearing through the spread groove, restricts the inner tube through the roller bearing, through inner tube and corresponding pump shaft interference fit for pump shaft connection is in the connecting tube.
The utility model has the following beneficial effects:
The utility model solves the problem that the two ends of the pump shaft of the lubricating oil pump are required to be respectively used inconveniently when the connecting cylinder and the inner fixing disc are closed during working, the corresponding pump shaft required to be installed is cooled by liquid nitrogen, the pump shaft is slightly contracted after being cooled by liquid nitrogen, the pump shaft is inserted into the inner cylinder in the connecting cylinder after being contracted, the end part of the connecting cylinder is pushed to be contacted with a believed external structure, then the pump shaft is inserted into the corresponding lubricating oil pump assembly, then the corresponding lubricating oil pump assembly is inserted, the connecting cylinder is rotated, the outer mounting ring outside the connecting cylinder is aligned with the assembly in the lubricating oil pump, then the mounting bolts are inserted into the mounting holes on the outer mounting ring, and then the connecting cylinder is screwed into the corresponding lubricating oil pump mounting position, so that the connecting cylinder is installed, and when the lubricating oil pump is used, the gap between the pump shaft of the lubricating oil pump and the mounting position is closed by the sealing convex ring, so that the two ends of the pump shaft can be synchronously closed during use, and the use is more convenient.
According to the utility model, the problem that the working efficiency of the lubricating oil pump is reduced due to the fact that the resistance to the pump shaft of the sealing assembly is large when the lubricating oil pump shaft works is solved by arranging the connecting tube, the inner fixing disc and the limiting assembly, when butter is required to be added at the position between the inner wall of the connecting tube and the inner tube, the sealing bolt is screwed, so that the sealing screw hole is opened, then the butter is led into the connecting tube, gaps between the limiting assemblies are filled, and when the lubricating oil pump works, the rolling shaft is lubricated by the butter, so that the working smoothness of the pump shaft is better when the lubricating oil pump is used.
Drawings
FIG. 1 is a perspective view of an assembled structure of a pump shaft seal structure of an oil pump;
FIG. 2 is a perspective view of a connecting cylinder structure;
FIG. 3 is a perspective view of the structure of the inner fixing plate;
fig. 4 is a perspective view of the structure of the restriction device.
Reference numerals:
1. A connecting cylinder; 101. an outer mounting ring; 102. a mounting hole; 2. an inner fixing plate; 201. an inner port; 202. sealing the convex ring; 203. sealing the screw hole; 204. a sealing bolt; 3. a restriction assembly; 301. a connecting groove; 302. a flow channel; 303. a roller; 4. an inner cylinder.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1-4, the utility model discloses a pump shaft sealing structure of a lubricant pump, which comprises a connecting cylinder 1, an inner fixing disc 2 and a limiting component 3, wherein the limiting component 3 is fixed on the inner wall of the connecting cylinder 1 in an annular array, the connecting cylinder 1 connects the limiting component 3 therein, so that when the lubricant pump is used, the limiting component 3 is sealed therein, the limiting component 3 limits the inner cylinder 4 therein through the limiting component 3, the inner fixing disc 2 is fixed at both ends of the limiting component 3 in the connecting cylinder 1, the inner fixing disc 2 cooperates with the limiting component 3 in the connecting cylinder when in operation, the two inner fixing discs 2 are symmetrical with each other, so that both ends of the limiting component 3 are respectively limited in the connecting cylinder 1 by the two inner fixing discs 2, one end far away from the limiting component 3 is fixed with a sealing convex ring 202, and the sealing convex ring 202 is extruded at the corresponding position after the connecting cylinder 1 is installed at the corresponding position on the lubricant pump through an outer mounting ring 101 when in operation, so that the lubricant pump shaft is sealed on a driving component.
As shown in fig. 1 and 2, the two ends of the circumference of the connecting cylinder 1 are both fixed with an outer mounting ring 101, the outer mounting ring 101 is internally fixed with mounting holes 102 in a ring array, and when the connecting cylinder 1 works, the corresponding mounting bolts are movably connected through the mounting holes 102 on the outer mounting ring 101 and screwed into the corresponding mounting positions of the external lubricating oil pump to be correspondingly mounted.
As shown in fig. 1 and 3, an inner opening 201 is formed in the center of the inner part of the inner fixing disc 2, the diameter of the sealing convex ring 202 is larger than the inner diameter of the inner opening 201, a sealing screw hole 203 is formed in the inner fixing disc 2 outside the sealing convex ring 202 in a penetrating manner, the sealing screw hole 203 is arranged between two adjacent limiting assemblies 3, the inner fixing disc 2 provides guiding during pump shaft installation through the inner opening 201 during operation, and an input position for grease filling is provided through the sealing screw hole 203.
As shown in fig. 1 and 3, the sealing screw hole 203 is internally and threadedly connected with a sealing bolt 204, one end of the sealing bolt 204 away from the limiting component 3 is flush with one end face of the inner fixing plate 2 away from the limiting component 3, and the sealing screw hole 203 is screwed into the sealing screw hole 203 through the sealing bolt 204 when in operation, so that the sealing screw hole 203 is sealed.
As shown in fig. 1 and 3, the two inner fixing discs 2 are respectively fixed on the inner walls of the two ends of the connecting cylinder 1, and one end surface of the inner fixing disc 2 away from the limiting component 3 is flush with the end surface of the connecting cylinder 1, so that the inner fixing disc 2 can be clung to the corresponding mounting position when in use.
As shown in fig. 1 and 4, the limiting component 3 includes a connecting groove 301, a circulation groove 302 and a roller 303, the connecting groove 301 is fixed on the inner wall of the connecting tube 1 in an annular array, the roller 303 is movably connected in the connecting groove 301, a plurality of circulation grooves 302 are equidistantly formed on the outer side of the connecting groove 301, an inner tube 4 is arranged in the center of the inner portion of the connecting tube 1, the inner tube 4 is in contact with the roller 303 arranged in the connecting tube 1 in an annular array, two ends of the inner tube 4 are respectively in contact with two inner fixing plates 2, the inner diameter of the inner tube 4 is smaller than the inner diameter of the inner opening 201, the limiting component 3 provides position limitation of the roller 303 through the connecting groove 301, the inner tube 4 is limited by the roller 303, and in interference fit with a lubricant pump shaft to be installed when the inner tube 4 works, so that the connecting groove 301 circulates corresponding butter between the limiting components 3 through the circulation groove 302.
The specific working principle of the utility model is as follows: in operation, when butter is to be added at a position between the inner wall of the connecting cylinder 1 and the inner cylinder 4, the sealing bolt 204 is then screwed so that the sealing screw hole 203 is opened, then butter is introduced into the connecting cylinder 1 and fills the gap between the limiting components 3, and in operation, the roller 303 is lubricated by butter, the corresponding pump shaft to be installed is cooled by liquid nitrogen, after the liquid nitrogen is cooled, the pump shaft is slightly contracted, the pump shaft is inserted into the inner cylinder 4 in the connecting cylinder 1 after the pump shaft is contracted, the end of the connecting cylinder 1 is pushed to be contacted with a believed external structure, then the pump shaft is inserted into the corresponding lubricating oil pump component, then the corresponding lubricating oil pump component is inserted, then the connecting cylinder 1 is rotated so that the outer mounting ring 101 outside the connecting cylinder 1 is aligned with the components in the lubricating oil pump, then the mounting bolts are inserted into the mounting holes 102 on the outer mounting ring 101, and then screwed into the corresponding lubricating oil pump mounting positions so that the connecting cylinder 1 is installed, and in use, the gap between the pump shaft and the mounting positions of the lubricating oil pump is sealed by the sealing convex ring 202.
The foregoing is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, and any modification, equivalent replacement, and improvement of some of the technical features described in the foregoing embodiments are all within the scope of the present utility model.
Claims (6)
1. The utility model provides a lubricating oil pump shaft seal structure, includes connecting cylinder (1), internal fixation dish (2) and restriction subassembly (3), its characterized in that: the inner wall of the connecting cylinder (1) is fixedly provided with limiting components (3) in an annular array, two ends of each limiting component (3) in the connecting cylinder (1) are fixedly provided with inner fixing plates (2), the two inner fixing plates (2) are mutually symmetrical, and one end, far away from the limiting components (3), of each inner fixing plate (2) is fixedly provided with a sealing convex ring (202).
2. The lubricating oil pump shaft sealing structure according to claim 1, wherein: the two ends of the circumference side of the connecting cylinder (1) are both fixed with an outer mounting ring (101), and mounting holes (102) are fixed in the outer mounting ring (101) in an annular array.
3. The lubricating oil pump shaft sealing structure according to claim 1, wherein: the inner fixing plate is characterized in that an inner opening (201) is formed in the center of the inner portion of the inner fixing plate (2), the diameter of the sealing convex ring (202) is larger than the inner diameter of the inner opening (201), a sealing screw hole (203) is formed in the inner fixing plate (2) on the outer side of the sealing convex ring (202) in a penetrating mode, and the sealing screw hole (203) is arranged between two adjacent limiting assemblies (3).
4. A lubricating pump shaft seal structure according to claim 3, wherein: the sealing screw hole (203) is internally connected with a sealing bolt (204), and one end of the sealing bolt (204) away from the limiting component (3) is flush with one end face of the inner fixing disc (2) away from the limiting component (3).
5. The lubricating oil pump shaft sealing structure according to claim 1, wherein: the two inner fixing plates (2) are respectively fixed on the inner walls at the two ends of the connecting cylinder (1), and one end face of the inner fixing plate (2) far away from the limiting assembly (3) is flush with the end face of the connecting cylinder (1).
6. The lubricating oil pump shaft sealing structure according to claim 1, wherein: the limiting component (3) comprises a connecting groove (301), a circulating groove (302) and a roller (303), wherein the connecting groove (301) is fixedly arranged on the inner wall of the connecting tube (1) in an annular array, the roller (303) is movably connected in the connecting groove (301), a plurality of circulating grooves (302) are formed in the outer side of the connecting groove (301) in an equidistant mode, an inner tube (4) is arranged in the center of the inner portion of the connecting tube (1), the inner tube (4) is mutually contacted with the roller (303) which is arranged in the connecting tube (1) in an annular array, two ends of the inner tube (4) are respectively mutually contacted with two inner fixing discs (2), and the inner diameter of the inner tube (4) is smaller than that of an inner opening (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322922080.3U CN220870589U (en) | 2023-10-31 | 2023-10-31 | Pump shaft sealing structure of lubricating oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322922080.3U CN220870589U (en) | 2023-10-31 | 2023-10-31 | Pump shaft sealing structure of lubricating oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220870589U true CN220870589U (en) | 2024-04-30 |
Family
ID=90815825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322922080.3U Active CN220870589U (en) | 2023-10-31 | 2023-10-31 | Pump shaft sealing structure of lubricating oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220870589U (en) |
-
2023
- 2023-10-31 CN CN202322922080.3U patent/CN220870589U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |