CN118049395A - Mechanical sealing device of double-suction centrifugal oil pump - Google Patents
Mechanical sealing device of double-suction centrifugal oil pump Download PDFInfo
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- CN118049395A CN118049395A CN202410432554.2A CN202410432554A CN118049395A CN 118049395 A CN118049395 A CN 118049395A CN 202410432554 A CN202410432554 A CN 202410432554A CN 118049395 A CN118049395 A CN 118049395A
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- 238000007789 sealing Methods 0.000 title claims abstract description 156
- 239000003921 oil Substances 0.000 claims abstract description 156
- 239000010687 lubricating oil Substances 0.000 claims abstract description 37
- 238000002347 injection Methods 0.000 claims description 46
- 239000007924 injection Substances 0.000 claims description 46
- 238000012856 packing Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 18
- 239000000446 fuel Substances 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a mechanical sealing device of a double-suction centrifugal oil pump, and relates to the technical field of centrifugal oil pumps. This mechanical seal device of double suction centrifugal oil pump, through the cooperation of locating sleeve and oil spout frame, when the drive shaft operates, can drive the inside driving blade operation of locating sleeve, carry the oil spout frame to oil storage intracavity portion's lubricating oil through defeated oil pipe, then spout the junction of drive shaft and outer axle sleeve and interior axle sleeve by a plurality of fuel sprayer, guarantee the sealed effect and the lubricated effect of the pump body, prevent that lubricating oil from too little and leading to lubricated effect to reduce, can be applicable to the transportation operation of different lubricating oil simultaneously, the life and the sealed effect of equipment have been promoted.
Description
Technical Field
The invention relates to the technical field of centrifugal oil pumps, in particular to a mechanical sealing device of a double-suction centrifugal oil pump.
Background
The main flow-through components of the centrifugal oil pump are a water suction chamber, an impeller and a water pressing chamber. It is used for conveying petroleum products such as gasoline, kerosene, diesel oil and aviation kerosene. The medium temperature is between minus 20 ℃ and +80 ℃, which is a good marine loading and unloading oil pump. And is suitable for the oil transportation of oil storage devices such as land oil reservoirs, oil tankers and the like. The device can also be used for conveying seawater, fresh water and the like, and the lubricating mode between a general pump body and a driving shaft lever is realized by adopting lubricating oil and lubricating grease, and referring to Chinese patent, the application number is as follows: the patent of 202210688770.4' discloses a mechanical sealing device of a double-suction centrifugal oil pump, which solves the problems that vibration can be generated in the operation process of the oil pump, a sealing plug can be loosened, and oil can leak from a gap between an oil filling hole and the sealing plug, but when the oil pump is operated, too little lubricating oil occurs or non-liquid lubricating oil such as lubricating grease is used, the lubricating effect of mechanical sealing is easily influenced, thereby the service life of a pump body and the sealing effect are reduced, and the mechanical sealing device of the double-suction centrifugal oil pump is provided for solving the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a mechanical sealing device of a double-suction centrifugal oil pump, which solves the problems in the background art.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the mechanical sealing device of the double-suction centrifugal oil pump comprises a pump body, wherein an oil storage cavity is formed in the pump body, a driving shaft is rotationally connected in the pump body, and an outer sealing shaft sleeve and an inner sealing shaft sleeve are respectively sleeved on the outer side of the driving shaft;
The outer sealing shaft sleeve and the inner sealing shaft sleeve are respectively connected to two sides of the pump body, and the inner sides of the outer sealing shaft sleeve and the inner sealing shaft sleeve are respectively and rotatably connected with an inner ring for ensuring the sealing of the driving shaft and the oil storage cavity;
The oil storage cavity is internally fixed with a positioning sleeve, the end parts of the positioning sleeve are fixedly provided with conical cover openings, oil delivery pipes are connected through the conical cover openings, oil injection frames are fixedly arranged on two sides of the interior of the oil storage cavity, a plurality of oil injection nozzles are arranged on the outer sides of the oil injection frames, and the oil delivery pipes are connected with the oil injection frames and used for conveying lubricating oil to the connecting parts of a driving shaft, an outer sealing shaft sleeve and an inner sealing shaft sleeve;
The inside rotation of positioning sleeve is connected with the transmission axostylus axostyle, and the both ends of transmission axostylus axostyle have all fixedly cup jointed drive vane for carry lubricating oil, be connected with drive chain between transmission axostylus axostyle and the toper cover mouth.
Preferably, the oil injection frame outside of both sides has all seted up interior concave surface, and a plurality of the fuel sprayer is seted up respectively on interior concave surface, oil injection frame outside fixedly connected with locating plate.
Preferably, the oil spraying frame is formed by splicing two semi-annular shaft sleeves, and the end parts of the semi-annular shaft sleeves are fixedly provided with connecting plugboards.
Preferably, a distance is reserved between the oil injection frames on two sides and the outer sealing shaft sleeve and the inner sealing shaft sleeve, and the oil injection frames are always coaxial with the driving shaft.
Preferably, the outer sides of the outer sealing shaft sleeve and the inner sealing shaft sleeve are fixedly provided with sealing rings, and the sealing rings are kept sealed with the pump body.
Preferably, the locating frames are fixedly arranged on two sides of the inside of the locating sleeve, and the transmission shaft rod penetrates through the locating frames and is connected with the locating frames in a rotating mode.
Preferably, the front end sealing cover is fixedly arranged on the outer side of the pump body, the oil inlet pipe is fixed on the outer side of the front end sealing cover, the oil outlet is formed in the end portion of the pump body, the sealing upper cover is fixed above the pump body and used for sealing the oil storage cavity, the filling opening is formed in the sealing upper cover, and the impeller is fixedly sleeved at the end portion of the driving shaft.
Preferably, the inner side of the pump body and the inner side of the front end sealing cover are fixedly provided with lining plates, and reinforcing gaskets are arranged among a plurality of the lining plates.
Preferably, the pump body outside is fixed with the seal end plate, the drive shaft passes the seal end plate, and is equipped with the seal packing ring with the seal end plate between, seal packing ring tip rotates and is connected with the end ring, the end ring is fixed to cup joint in the outside of drive shaft, seal packing ring is fixed inside the seal end plate, and seal packing ring inside has seted up the water-cooling notch, the outside of end ring is fixed with a plurality of communicating pipes that communicate each other with the water-cooling notch.
Preferably, the end part of the sealing packing ring is fixedly provided with an arc-shaped lug, and the inner side of the end ring is provided with an arc-shaped groove matched with the arc-shaped lug.
The invention provides a mechanical sealing device of a double-suction centrifugal oil pump. Compared with the prior art, the method has the following beneficial effects:
(1) This mechanical seal device of double suction centrifugal oil pump, through the cooperation of locating sleeve and oil spout frame, when the drive shaft operates, can drive the inside driving blade operation of locating sleeve, carry the oil spout frame to oil spout through defeated oil pipe with the inside lubricating oil of oil storage intracavity, then spout the junction of drive shaft and outer seal axle sleeve and interior seal axle sleeve by a plurality of fuel sprayer, guarantee the sealed effect and the lubricated effect of the pump body, prevent that lubricating oil from too little and leading to lubricated effect to reduce, can be applicable to the transportation operation of different lubricating oil simultaneously, the life and the sealed effect of equipment have been promoted.
(2) According to the mechanical sealing device of the double-suction centrifugal oil pump, the sealing performance inside the pump body can be kept on one hand through the matching of the lining plates and the reinforcing gaskets, the disassembly and maintenance treatment are convenient, and meanwhile, the corrosion resistance and the protection effect of the inner wall of the pump body can be improved.
(3) According to the mechanical sealing device of the double-suction centrifugal oil pump, through the arrangement of the sealing packing ring, when the driving shaft operates to drive the end ring at the end part of the sealing packing ring to rotate, cooling water is connected into the communicating pipe, so that the cooling water circulates in the water cooling notch, the constant temperature of the sealing packing ring and the end ring can be ensured, and the sealing effect is prevented from being influenced due to overheating.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic cross-sectional view of the pump body of the present invention;
FIG. 4 is an enlarged schematic view of the structure of the point A in FIG. 3 according to the present invention;
FIG. 5 is a schematic cross-sectional view of an outer seal sleeve and an inner seal sleeve according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of the point B in FIG. 5 according to the present invention;
FIG. 7 is a schematic diagram of a cross-sectional structure of a fuel injection frame of the present invention;
Fig. 8 is an enlarged view of the structure of fig. 7 at C according to the present invention.
In the figure: 1. a pump body; 101. an oil outlet; 2. a front end cover; 201. an oil inlet pipe; 3. sealing the upper cover; 4. a drive shaft; 401. an impeller; 5. an outer sealing shaft sleeve; 6. an inner sealing shaft sleeve; 601. an inner ring; 7. a lining plate; 8. reinforcing the gasket; 9. a sealing end plate; 10. sealing the packing ring; 1001. an end ring; 1002. arc-shaped protruding blocks; 1003. a water-cooling notch; 1004. a communicating pipe; 11. an oil storage chamber; 12. positioning a sleeve; 13. a transmission shaft lever; 1301. a drive chain; 1302. a drive vane; 1303. a positioning frame; 14. a conical cover opening; 1401. an oil delivery pipe; 15. an oil spraying frame; 1501. an inner concave surface; 1502. an oil nozzle; 1503. a connection plugboard; 1504. and (5) positioning the plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the present invention provides two technical solutions, specifically including the following embodiments:
Embodiment one:
Referring to fig. 3, 5-8, a mechanical sealing device of a double-suction centrifugal oil pump comprises a pump body 1, wherein an oil storage cavity 11 is formed in the pump body 1, a driving shaft 4 is rotatably connected in the pump body 1, an outer sealing shaft sleeve 5 and an inner sealing shaft sleeve 6 are respectively sleeved on the outer side of the driving shaft 4, lubricating oil is injected into the oil storage cavity 11 before the device is used, the lubricating oil is selected from the existing lubricating oil or lubricating grease, and the injection height is required to be flush with the axial lead of the driving shaft 4;
The outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 are respectively connected to two sides of the pump body 1, and the inner sides of the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 are respectively and rotatably connected with an inner ring 601, so that the sealing of the driving shaft 4 and the oil storage cavity 11 is ensured, when the driving shaft 4 operates, the corresponding inner ring 601 can be driven to rotate, and meanwhile, the sealing between the driving shaft 4 and the oil storage cavity 11 is ensured through the cooperation of the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6, and the leakage of lubricating oil is avoided;
Specifically, referring to fig. 7 and 8, a positioning sleeve 12 is fixed inside an oil storage cavity 11, the end parts of the positioning sleeve 12 are fixedly provided with a conical cover opening 14, oil delivery pipes 1401 are connected to the end parts of the positioning sleeve 12 through the conical cover opening 14, oil injection frames 15 are fixed to two sides of the inside of the oil storage cavity 11, a plurality of oil injection nozzles 1502 are arranged on the outer sides of the oil injection frames 15, the oil delivery pipes 1401 are connected with the oil injection frames 15, and are used for conveying lubricating oil to the connection parts of a driving shaft 4, an outer sealing shaft sleeve 5 and an inner sealing shaft sleeve 6;
The inside of the positioning sleeve 12 is rotationally connected with a transmission shaft lever 13, both ends of the transmission shaft lever 13 are fixedly sleeved with transmission blades 1302 for conveying lubricating oil, and a transmission chain 1301 is connected between the transmission shaft lever 13 and the conical cover opening 14;
The installation positions of the two oil injection frames 15 are respectively positioned at the inner sides of the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6, when the driving shaft 4 runs, the driving shaft rod 13 can be driven to rotate through the cooperation of the driving chain 1301, lubricating oil in the oil storage cavity 11 is pumped into the positioning sleeve 12 through the cooperation of the driving blades 1302 at the two sides, and then is respectively conveyed to the oil injection frames 15 at the two sides along the cooperation of the conical cover openings 14 at the two ends and the oil delivery pipe 1401, and along with the continuous entering of the lubricating oil into the oil injection frames 15, the lubricating oil can be sprayed to the connection positions of the driving shaft 4, the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 through the plurality of oil injection nozzles 1502, and along with the rotation of the driving shaft 4, the lubricating effect of the driving shaft 4 is ensured, and the service life and the sealing effect of equipment are improved;
Specifically, when the pump body 1 runs, vibration is generated, so that lubricating oil in the oil storage cavity 11 can subside to the bottom, at the moment, better lubricating effect can be achieved through the extraction of the positioning sleeve 12, the lubricating effect is prevented from being reduced due to too little lubricating oil, and the lubricating mode is suitable for different lubricating oils;
Specifically, referring to fig. 8, the outer sides of the oil injection frames 15 on both sides are provided with inner concave surfaces 1501, a plurality of oil injection nozzles 1502 are respectively arranged on the inner concave surfaces 1501, and the outer sides of the oil injection frames 15 are fixedly connected with positioning plates 1504;
The oil spraying frame 15 is formed by splicing two semi-annular shaft sleeves, the end parts of the semi-annular shaft sleeves are fixedly provided with the connection plugboards 1503, the oil spraying frame 15 can be installed on the inner wall of the oil storage cavity 11 in a bolt fixing mode through the positioning plate 1504, and meanwhile, the two semi-annular shaft sleeves can be conveniently replaced and cleaned when being disassembled;
Specifically, a distance is reserved between the oil injection frames 15 on two sides and the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6, the oil injection frames 15 are always coaxial with the driving shaft 4, the oil injection frames 15 can be prevented from contacting the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 when the driving shaft 4 rotates, and meanwhile, good oil conveying effect can be ensured;
specifically, the outer sides of the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 are fixedly provided with sealing rings, and the sealing rings are kept sealed with the pump body 1;
specifically, the positioning frame 1303 is fixedly installed on two sides of the inner part of the positioning sleeve 12, and the transmission shaft lever 13 passes through the positioning frame 1303 and is rotationally connected with the positioning frame 1303;
Specifically, referring to fig. 1-3, a front end sealing cover 2 is fixedly installed on the outer side of a pump body 1, an oil inlet pipe 201 is fixed on the outer side of the front end sealing cover 2, an oil outlet 101 is formed in the end portion of the pump body 1, a sealing upper cover 3 is fixed above the pump body 1 and used for sealing an oil storage cavity 11, a filling port is formed in the sealing upper cover 3, an impeller 401 is fixedly sleeved on the end portion of a driving shaft 4, and the impeller 401 is an existing oil inlet at two ends;
further, referring to fig. 3 and 4, a sealing end plate 9 is fixed on the outer side of the pump body 1, the driving shaft 4 passes through the sealing end plate 9, and a sealing packing ring 10 is arranged between the driving shaft 4 and the sealing end plate 9, and the sealing packing ring 10 is an existing device and is used for ensuring tightness between the sealing end plate 9 and the driving shaft 4.
Embodiment two:
Based on the first embodiment, referring to fig. 3 and fig. 5-8, a mechanical sealing device of a double-suction centrifugal oil pump comprises a pump body 1, wherein an oil storage cavity 11 is formed in the pump body 1, a driving shaft 4 is rotationally connected in the pump body 1, an outer sealing shaft sleeve 5 and an inner sealing shaft sleeve 6 are respectively sleeved on the outer side of the driving shaft 4, lubricating oil is injected into the oil storage cavity 11 before the device is used, the lubricating oil is selected from the existing lubricating oil or lubricating grease, and the injection height is required to be flush with the axial lead of the driving shaft 4;
The outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 are respectively connected to two sides of the pump body 1, and the inner sides of the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 are respectively and rotatably connected with an inner ring 601, so that the sealing of the driving shaft 4 and the oil storage cavity 11 is ensured, when the driving shaft 4 operates, the corresponding inner ring 601 can be driven to rotate, and meanwhile, the sealing between the driving shaft 4 and the oil storage cavity 11 is ensured through the cooperation of the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6, and the leakage of lubricating oil is avoided;
Specifically, referring to fig. 7 and 8, a positioning sleeve 12 is fixed inside an oil storage cavity 11, the end parts of the positioning sleeve 12 are fixedly provided with a conical cover opening 14, oil delivery pipes 1401 are connected to the end parts of the positioning sleeve 12 through the conical cover opening 14, oil injection frames 15 are fixed to two sides of the inside of the oil storage cavity 11, a plurality of oil injection nozzles 1502 are arranged on the outer sides of the oil injection frames 15, the oil delivery pipes 1401 are connected with the oil injection frames 15, and are used for conveying lubricating oil to the connection parts of a driving shaft 4, an outer sealing shaft sleeve 5 and an inner sealing shaft sleeve 6;
The inside of the positioning sleeve 12 is rotationally connected with a transmission shaft lever 13, both ends of the transmission shaft lever 13 are fixedly sleeved with transmission blades 1302 for conveying lubricating oil, and a transmission chain 1301 is connected between the transmission shaft lever 13 and the conical cover opening 14;
The installation positions of the two oil injection frames 15 are respectively positioned at the inner sides of the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6, when the driving shaft 4 runs, the driving shaft rod 13 can be driven to rotate through the cooperation of the driving chain 1301, lubricating oil in the oil storage cavity 11 is pumped into the positioning sleeve 12 through the cooperation of the driving blades 1302 at the two sides, and then is respectively conveyed to the oil injection frames 15 at the two sides along the cooperation of the conical cover openings 14 at the two ends and the oil delivery pipe 1401, and along with the continuous entering of the lubricating oil into the oil injection frames 15, the lubricating oil can be sprayed to the connection positions of the driving shaft 4, the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 through the plurality of oil injection nozzles 1502, and along with the rotation of the driving shaft 4, the lubricating effect of the driving shaft 4 is ensured, and the service life and the sealing effect of equipment are improved;
Specifically, when the pump body 1 runs, vibration is generated, so that lubricating oil in the oil storage cavity 11 can subside to the bottom, at the moment, better lubricating effect can be achieved through the extraction of the positioning sleeve 12, the lubricating effect is prevented from being reduced due to too little lubricating oil, and the lubricating mode is suitable for different lubricating oils;
Specifically, referring to fig. 8, the outer sides of the oil injection frames 15 on both sides are provided with inner concave surfaces 1501, a plurality of oil injection nozzles 1502 are respectively arranged on the inner concave surfaces 1501, and the outer sides of the oil injection frames 15 are fixedly connected with positioning plates 1504;
The oil spraying frame 15 is formed by splicing two semi-annular shaft sleeves, the end parts of the semi-annular shaft sleeves are fixedly provided with the connection plugboards 1503, the oil spraying frame 15 can be installed on the inner wall of the oil storage cavity 11 in a bolt fixing mode through the positioning plate 1504, and meanwhile, the two semi-annular shaft sleeves can be conveniently replaced and cleaned when being disassembled;
Specifically, a distance is reserved between the oil injection frames 15 on two sides and the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6, the oil injection frames 15 are always coaxial with the driving shaft 4, the oil injection frames 15 can be prevented from contacting the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 when the driving shaft 4 rotates, and meanwhile, good oil conveying effect can be ensured;
specifically, the outer sides of the outer sealing shaft sleeve 5 and the inner sealing shaft sleeve 6 are fixedly provided with sealing rings, and the sealing rings are kept sealed with the pump body 1;
specifically, the positioning frame 1303 is fixedly installed on two sides of the inner part of the positioning sleeve 12, and the transmission shaft lever 13 passes through the positioning frame 1303 and is rotationally connected with the positioning frame 1303;
Specifically, referring to fig. 1-3, a front end sealing cover 2 is fixedly installed on the outer side of a pump body 1, an oil inlet pipe 201 is fixed on the outer side of the front end sealing cover 2, an oil outlet 101 is formed in the end portion of the pump body 1, a sealing upper cover 3 is fixed above the pump body 1 and used for sealing an oil storage cavity 11, a filling port is formed in the sealing upper cover 3, an impeller 401 is fixedly sleeved on the end portion of a driving shaft 4, and the impeller 401 is an existing oil inlet at two ends;
Further, referring to fig. 2, the inner side of the pump body 1 and the inner side of the front end sealing cover 2 are fixedly provided with lining plates 7, reinforcing gaskets 8 are arranged among the lining plates 7, when the lining plates 7 are separated from the reinforcing gaskets 8, the front end sealing cover 2 can enable the reinforcing gaskets 8 to be in contact with the lining plates 7 when being installed, the sealing performance among the lining plates 7 is kept through the reinforcing gaskets 8 being pressed, and the anti-corrosion capacity and the protection effect of the inner wall of the pump body 1 can be effectively improved through the installation of the lining plates 7;
Further, referring to fig. 3 and 4, a sealing end plate 9 is fixed on the outer side of the pump body 1, the driving shaft 4 passes through the sealing end plate 9, a sealing packing ring 10 is arranged between the driving shaft 4 and the sealing end plate 9, an end ring 1001 is rotatably connected to the end part of the sealing packing ring 10, the end ring 1001 is fixedly sleeved on the outer side of the driving shaft 4, the sealing packing ring 10 is fixed inside the sealing end plate 9, a water cooling notch 1003 is formed in the sealing packing ring 10, and a plurality of communicating pipes 1004 communicated with the water cooling notch 1003 are fixed on the outer side of the end ring 1001;
an arc-shaped protruding block 1002 is fixedly arranged at the end part of the sealing packing ring 10, and an arc-shaped groove matched with the arc-shaped protruding block 1002 is formed in the inner side of the end ring 1001;
The sealing packing ring 10 is used for guaranteeing tightness between the driving shaft 4 and the pump body 1, when the driving shaft 4 drives the impeller 401 to rotate, the end ring 1001 sleeved at the end part of the sealing packing ring 10 can be driven to operate simultaneously, sealing effect is guaranteed, cooling water can be connected into the communicating pipe 1004, cooling water enters the water cooling notch 1003 for circulation, temperature constancy of the sealing packing ring 10 and the end ring 1001 can be guaranteed, and the sealing effect is prevented from being influenced due to overheating.
And all that is not described in detail in this specification is well known to those skilled in the art.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (10)
1. The utility model provides a mechanical seal device of double suction centrifugal oil pump, includes the pump body (1), its characterized in that: an oil storage cavity (11) is formed in the pump body (1), a driving shaft (4) is rotatably connected in the pump body (1), and an outer sealing shaft sleeve (5) and an inner sealing shaft sleeve (6) are respectively sleeved on the outer side of the driving shaft (4);
The outer sealing shaft sleeve (5) and the inner sealing shaft sleeve (6) are respectively connected to two sides of the pump body (1), and inner sides of the outer sealing shaft sleeve (5) and the inner sealing shaft sleeve (6) are respectively and rotatably connected with an inner ring (601) for ensuring the sealing of the driving shaft (4) and the oil storage cavity (11);
The oil storage device is characterized in that a positioning sleeve (12) is fixed inside the oil storage cavity (11), conical cover openings (14) are fixedly arranged at the end parts of the positioning sleeve (12), oil delivery pipes (1401) are connected to the end parts of the positioning sleeve (12) through the conical cover openings (14), oil injection frames (15) are fixed to two sides of the inside of the oil storage cavity (11), a plurality of oil injection nozzles (1502) are arranged on the outer sides of the oil injection frames (15), and the oil delivery pipes (1401) are connected with the oil injection frames (15) and are used for conveying lubricating oil to the connecting parts of a driving shaft (4) and an outer sealing shaft sleeve (5) and an inner sealing shaft sleeve (6);
The inside rotation of positioning sleeve (12) is connected with transmission axostylus axostyle (13), and transmission blade (1302) have all been fixedly cup jointed at the both ends of transmission axostylus axostyle (13) for carry lubricating oil, be connected with drive chain (1301) between transmission axostylus axostyle (13) and toper cover mouth (14).
2. The mechanical seal device of a double suction centrifugal oil pump according to claim 1, wherein: concave surfaces (1501) are formed in the outer sides of the oil injection frames (15) on two sides, a plurality of oil injection nozzles (1502) are respectively formed in the concave surfaces (1501), and positioning plates (1504) are fixedly connected to the outer sides of the oil injection frames (15).
3. The mechanical seal device of a double suction centrifugal oil pump according to claim 2, wherein: the oil spraying frame (15) is formed by splicing two semi-annular shaft sleeves, and the end parts of the semi-annular shaft sleeves are fixedly provided with connecting plugboards (1503).
4. The mechanical seal device of a double suction centrifugal oil pump according to claim 1, wherein: the oil spraying frames (15) on two sides are all spaced from the outer sealing shaft sleeve (5) and the inner sealing shaft sleeve (6), and the oil spraying frames (15) are always coaxial with the driving shaft (4).
5. The mechanical seal device of a double suction centrifugal oil pump according to claim 1, wherein: sealing rings are fixedly arranged on the outer sides of the outer sealing shaft sleeve (5) and the inner sealing shaft sleeve (6), and the outer sealing shaft sleeve and the inner sealing shaft sleeve are kept sealed with the pump body (1) through the sealing rings.
6. The mechanical seal device of a double suction centrifugal oil pump according to claim 1, wherein: the locating sleeve (12) is fixedly arranged on two sides of the inside of the locating sleeve, and the transmission shaft rod (13) penetrates through the locating sleeve (1303) and is connected with the locating sleeve in a rotating mode.
7. The mechanical seal device of a double suction centrifugal oil pump according to claim 1, wherein: the oil storage pump is characterized in that a front end sealing cover (2) is fixedly arranged on the outer side of the pump body (1), an oil inlet pipe (201) is fixed on the outer side of the front end sealing cover (2), an oil outlet (101) is formed in the end portion of the pump body (1), a sealing upper cover (3) is fixed above the pump body (1) and used for sealing an oil storage cavity (11), a filling port is formed in the sealing upper cover (3), and an impeller (401) is fixedly sleeved at the end portion of the driving shaft (4).
8. The mechanical seal device of a double suction centrifugal oil pump according to claim 7, wherein: the inner side of the pump body (1) and the inner side of the front end sealing cover (2) are fixedly provided with lining plates (7), and reinforcing gaskets (8) are arranged among the lining plates (7).
9. The mechanical seal device of a double suction centrifugal oil pump according to claim 1, wherein: the pump body (1) outside is fixed with sealed end plate (9), drive shaft (4) pass sealed end plate (9), and are equipped with sealed packing ring (10) with sealed end plate (9), sealed packing ring (10) tip rotates and is connected with end ring (1001), end ring (1001) are fixed cup joint in the outside of drive shaft (4), sealed packing ring (10) are fixed inside sealed end plate (9), and sealed packing ring (10) inside has seted up water-cooling notch (1003), the outside of end ring (1001) is fixed with a plurality of communicating pipes (1004) that are linked together with water-cooling notch (1003).
10. The mechanical seal device of a double suction centrifugal oil pump according to claim 9, wherein: the end part of the sealing packing ring (10) is fixedly provided with an arc-shaped protruding block (1002), and the inner side of the end ring (1001) is provided with an arc-shaped groove matched with the arc-shaped protruding block (1002).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410432554.2A CN118049395B (en) | 2024-04-11 | 2024-04-11 | Mechanical sealing device of double-suction centrifugal oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410432554.2A CN118049395B (en) | 2024-04-11 | 2024-04-11 | Mechanical sealing device of double-suction centrifugal oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118049395A true CN118049395A (en) | 2024-05-17 |
| CN118049395B CN118049395B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410432554.2A Active CN118049395B (en) | 2024-04-11 | 2024-04-11 | Mechanical sealing device of double-suction centrifugal oil pump |
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| Country | Link |
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| CN (1) | CN118049395B (en) |
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