CN108240350B - Bearing component for vertical pump and vertical multi-stage pump - Google Patents
Bearing component for vertical pump and vertical multi-stage pump Download PDFInfo
- Publication number
- CN108240350B CN108240350B CN201711464827.8A CN201711464827A CN108240350B CN 108240350 B CN108240350 B CN 108240350B CN 201711464827 A CN201711464827 A CN 201711464827A CN 108240350 B CN108240350 B CN 108240350B
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- Prior art keywords
- bearing
- pump
- vertical
- thrust
- guide
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Links
- 238000011010 flushing procedure Methods 0.000 claims abstract description 13
- 210000004907 gland Anatomy 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 29
- 239000010687 lubricating oil Substances 0.000 description 21
- 238000005461 lubrication Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001502 supplementing effect 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/049—Roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage 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
- F04D29/06—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
- F04D29/08—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)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a bearing component for a vertical pump and a vertical multi-stage pump, which solve the problems of high production cost, inconvenient maintenance and the like caused by the fact that a large amount of guide bearings are used in the conventional vertical pump. The bearing component comprises a bearing body arranged at the upper end of the vertical pump and a guide bearing arranged at the lower end of the vertical pump; a thrust roller bearing and a thrust head which are matched with the pump shaft are sequentially arranged in the bearing box body from bottom to top along the axial direction, and a self-aligning roller bearing is arranged at the upper part of the thrust head; the middle part of the thrust head is provided with an oil transmission hole, and the setting angle of the oil transmission hole is aligned with the roller center of the self-aligning roller bearing; pressurizing sleeves which are in seamless connection with the bearing box body are arranged among the thrust roller bearing, the middle part and the lower part of the thrust head and the pump shaft; threads with the direction opposite to the rotation direction of the pump shaft are arranged on the inner side of the thrust head, which is positioned above the inlet of the oil delivery hole and is close to the pressurizing sleeve; threads with the same direction as the rotation direction of the pump shaft are arranged on the inner side of the thrust head immersed in the oil tank; the guide bearing also comprises a guide bearing gland for axially fixing the guide bearing, and a flushing pipe joint is arranged at the lower part of the guide bearing gland.
Description
Technical Field
The invention belongs to the field of liquid pumps, and particularly relates to a bearing component and a vertical multistage pump with the bearing component, which are suitable for conveying rainwater, river water and the like with clear water or small amount of sediment.
Background
The bearing component plays a supporting role on the pump rotor, various forces are born in the operation process of the pump, and the lubrication and the use condition of the bearing are key factors for influencing the stable operation of the pump. The guide bearing lubricating medium must be cleaning liquid, and the structure of the guide bearing is adopted on the vertical multistage pump in a large amount, the guide bearing lubricating medium is flushed and lubricated by the self-conveying medium of the pump, and if the medium contains sediment, hard sediment particles can enter a gap of the water guide bearing to cause abrasion of a bearing bush, so that the service life of the guide bearing is influenced. Once the guide bearing fails, the pump cannot maintain stable operation, and maintenance or replacement of the guide bearing is required to be stopped, so that the guide bearing plays an important role in the vertical multistage pump.
Currently in vertical multistage pump constructions, the axial force of the pump is generally borne by thrust bearings, while the radial force of the pump is borne by guide bearings at the pump end. The number of guide bearings in the existing vertical single-stage pump is two, the number of the guide bearings of the vertical multi-stage pump is increased step by step, and if the middle stage or the final stage guide bearings are damaged or failed, the whole pump is required to be disassembled for maintenance when the guide bearings are replaced, so that the maintenance workload is large. Since the lubricating medium of the guide bearing must be a cleaning medium and cannot contain particulate matters such as muddy sand, the application range of the conventional vertical multistage pump is limited. The guide bearing in the current market has higher price, and the adoption of a large number of guide bearings also causes the cost improvement of the pump, so that the market competitiveness of the product is weakened.
In order to improve the service life of the guide bearing, many pump factories in China mainly adopt a filtering measure or an external high-pressure water flushing method to prevent muddy sand from entering a gap of the guide bearing to wear a bearing bush, although the method can improve the lubrication condition of the guide bearing, external high-pressure water needs to be additionally matched with a booster pump, a filter is additionally matched with the booster pump, the filter core needs to be regularly cleaned or replaced, the defects of high maintenance cost or complex field maintenance exist, and in addition, the complex field pipeline can also cause the conditions of water leakage, water dripping and the like at the joint of the flushing pipeline to influence the field operation environment.
Disclosure of Invention
The invention provides a bearing component for a vertical pump and a vertical multistage pump with the bearing component, which are low in cost, convenient to maintain and good in adaptability, and aims to solve the defects of the prior art.
In order to achieve the above object, the technical solution of the present invention is as follows:
the bearing component for the vertical pump is characterized by comprising a bearing body arranged at the upper end of the vertical pump and a guide bearing arranged at the lower end of the vertical pump;
the bearing body comprises a bearing box body and a bearing cover, an oil tank is arranged in the bearing box body, and the bearing cover is positioned above the bearing box body;
a thrust roller bearing and a thrust head which are matched with the pump shaft are sequentially arranged in the bearing box body from bottom to top along the axial direction, and a self-aligning roller bearing is arranged at the upper part of the thrust head;
the middle part of the thrust head is provided with an oil delivery hole, and the setting angle of the oil delivery hole is aligned with the center of a roller of the self-aligning roller bearing so as to achieve the aim of directly spraying lubricating oil to the center of the roller;
the thrust roller bearing, the middle part of the thrust head, the lower part of the thrust head and the pump shaft are respectively provided with a pressurizing sleeve, and the lower end of the pressurizing sleeve is in seamless connection with the bearing box body;
in order to prevent high-pressure lubricating oil from leaking out, a first thread with the direction opposite to the rotation direction of the pump shaft is arranged on the inner side of a thrust head, which is close to the pressurizing sleeve, above the inlet of the oil delivery hole;
in order to lift the pressurized lubricating oil, the inner side of the thrust head immersed in the oil tank is provided with a second thread with the same direction as the rotation direction of the pump shaft;
the bearing component further comprises a guide bearing gland for axially fixing the guide bearing; the lower part of the guide bearing gland is provided with a flushing pipe joint for externally connecting a flushing pipe.
Further, both the first thread and the second thread are in clearance fit with the pressure sleeve.
Further, in order to cool the bearing body when in heavy load, a water cooling jacket is arranged on the periphery of the oil tank of the bearing box body.
Further, a constant-position oil cup is arranged on one side of the bearing box body and used for supplementing lubricating oil of the bearing box body.
Further, in order to evenly spray lubricating oil into the self-aligning roller bearing, five oil delivery holes with the diameter of 8mm are evenly formed in the thrust head.
The invention also provides a vertical multistage pump, which comprises a pump shell, wherein a pump shaft is arranged in the pump shell, a plurality of impellers are arranged on the pump shaft, and a pump suction chamber is positioned at the lower part of the pump shell; the pump is characterized by further comprising the bearing component, wherein a guide bearing of the bearing component is positioned below a pump suction chamber and is arranged at the lower end of a pump shaft; the bearing body of the bearing component is sleeved at the upper end of the pump shaft.
In summary, the technical scheme adopted by the invention is that a guide bearing is arranged at the lowest end of the vertical pump, namely the space below the pump suction chamber, the guide bearing is lubricated by a medium conveyed by the pump, and when the pump conveys the medium containing particles, the medium is directly washed and lubricated by adopting a mode of externally connecting tap water. The thrust roller bearing is used for bearing force on the pump rotor, and the self-aligning roller bearing and the guide bearing jointly bear radial force of the pump rotor. The thrust roller bearing is arranged at the bottom of the oil tank and adopts a thin oil lubrication mode; the self-aligning roller bearing is arranged on the upper part of the thrust head and adopts a thin oil injection forced lubrication mode. The second screw thread with the spiral line direction being the same as the rotation direction of the pump shaft is arranged on the inner side of the thrust head immersed in the oil tank (the oil tank is filled with lubricating oil with proper capacity, so that leakage caused by too large lubricating oil amount) is avoided, the pressurizing sleeve is kept still and the thrust head rotates at a high speed along with the pump shaft when the pump is in normal operation, and at the moment, the second screw thread rotating at a high speed can have an upward force on the lubricating oil, so that the lubricating oil is promoted to move upwards and be sprayed outwards through the oil delivery hole; similarly, a first thread with a spiral line direction opposite to the rotation direction of the pump shaft is arranged on the inner side of the thrust head, which is positioned above the inlet of the oil delivery hole, and is close to the pressurizing sleeve, and the first thread which rotates at high speed can have a downward acting force on lubricating oil to prevent the lubricating oil from leaking out when the pump is in normal operation, and the sealing lubricating oil and the pressurizing sleeve cooperate together to play a role in sealing the lubricating oil.
The beneficial effects of the invention are as follows:
1. low cost, convenient maintenance and strong adaptability
The vertical pump adopts the bearing component, so that the number of guide bearings is reduced, the effect is particularly obvious particularly in the vertical multistage pump, the structure of the pump is simplified, the manufacturing cost of the pump is reduced, and the product competitiveness is improved; the guide bearing is positioned at the lower end of the pump shaft and is communicated with the pump suction chamber, the pump suction chamber is a low-pressure area, the guide bearing can be lubricated directly by externally connecting tap water for flushing when the pump conveys mediums containing particles, the tap water pressure is higher than the water pressure in the suction chamber, the particles in the mediums can be completely prevented from entering the bearing bush gap of the guide bearing, the lubrication of the guide bearing by additionally providing a booster pump or using a filter for filtering flushing water is avoided, the flushing scheme is simplified, and the pump is adapted to different working condition mediums; the guide bearing is a vulnerable part, and the guide bearing gland can be replaced only by opening the guide bearing gland during replacement, so that the whole pump is not required to be disassembled, and the maintenance is convenient.
2. The self-aligning roller bearing adopted in the invention can not only bear the radial force of the pump in combination with the guide bearing, but also automatically adjust the concentricity deviation caused by the forced deformation of the rotor of the vertical pump.
3. The self-lubricating device adopts a thread lifting pressurized lubricating oil injection self-lubricating mode for lubrication of the self-aligning roller bearing, avoids insufficient splashing lubrication of the traditional oil thrower, has the greatest effect of large lubricating oil quantity and high pressure due to the adoption of the injection self-lubricating mode, and can accurately inject lubricating oil to the ball center raceway part to lubricate the roller due to the fact that the setting angle of the oil delivery hole is aligned with the roller center of the self-aligning roller bearing, so that the bearing is more fully lubricated.
4. According to the invention, threads with the opposite direction to the rotation direction of the pump shaft are arranged on the upper part of the inlet of the oil conveying hole and close to the inner side of the thrust head of the pressurizing sleeve to seal, so that high-pressure lubricating oil is prevented from leaking.
Drawings
Fig. 1 is a schematic view of a bearing body according to the present invention.
FIG. 2 is a schematic view of a three-dimensional multistage pump according to the present invention;
the reference numerals are as follows:
1-a bearing body; 101-a bearing housing; 102-a bearing cap; 103-an oil tank; 104-thrust roller bearings; 105-thrust head; 106-aligning roller bearings; 107-oil delivery holes; 108-a water-cooling jacket; 109-constant-position oil cup; 110—first threads; 111-second threads; 112-oil transfer hole inlet; 113-a pressurizing sleeve; 114-reinforcing ribs; 2-guide bearings; 3-pump shaft; 4-a pump suction chamber; 5-pump outlet; 6-a pump housing; 7-guiding a bearing gland; 8-flushing the pipe joint; 9-civil engineering.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which:
in the following description, for convenience only, specific directional terms are used with reference to the corresponding drawings and are not to be construed as limiting the invention, as the directions of definition of the drawings change, and the directions indicated by these terms should be construed as corresponding different directions.
As shown in fig. 1 to 2, a bearing member for a vertical pump comprises a bearing body 1 and a guide bearing 2; the bearing body 1 is arranged at the upper end of the pump shaft 3 of the vertical pump, the bearing body 1 comprises a bearing box body 101 and a bearing cover 102, an oil tank 103 is arranged in the bearing box body 101, and the bearing cover 102 is positioned at the upper end of the bearing box body 101; a thrust roller bearing 104, a thrust head 105 and a self-aligning roller bearing 106 which are matched with the pump shaft 3 are sleeved in the bearing box body 101 in sequence from bottom to top along the axial direction; wherein the thrust collar 105 comprises a thrust collar upper portion, a thrust collar middle portion, and a thrust collar lower portion; in order to make the bearing body 1 compact in structure, the self-aligning roller bearing 106 is sleeved on the outer side of the upper part of the thrust head, the thrust roller bearing 104 is sleeved on the outer side of the lower part of the thrust head, and the thrust head 105 also plays a role of a bearing sleeve; five oil delivery holes 107 with the diameter of 8mm are uniformly formed in the middle of the thrust head, and the setting angle of the oil delivery holes 107 is exactly aligned with the roller center of the aligning roller bearing 106; the thrust roller bearing 104, the middle part and the lower part of the thrust head and the pump shaft 3 are respectively provided with a pressurizing sleeve 113; the lower end of the pressurizing sleeve 113 is in seamless connection with the bearing box 101, the guide bearing 2 is positioned below the pump suction chamber and is arranged at the lower end of the pump shaft 3, and a guide bearing gland 7 for axially fixing the guide bearing 2 is arranged below the guide bearing 2; the lower part of the guide bearing gland 7 is provided with a flushing pipe joint 8 which can be externally connected with a flushing pipe and is directly flushed by tap water to lubricate the guide bearing. A first thread 110 with a spiral line direction opposite to the rotation direction of the pump shaft is arranged above the oil conveying hole inlet 112 and is close to the inner side of the thrust head of the pressurizing sleeve so as to prevent high-pressure lubricating oil from leaking out; the inner side of the thrust head 105 immersed in the oil tank 103 is provided with a second thread 111 with the spiral line direction being the same as the rotation direction of the pump shaft so as to achieve the effects of lifting the pressurized lubricating oil and spraying the lubricating oil to the self-aligning roller bearing; the two threads are in clearance fit with the pressurizing sleeve. In order to cool the bearing body 1, a water cooling jacket 108 is arranged on the periphery of the oil tank 103 of the bearing box body 101; to replenish the bearing body 1 with lubricating oil, a constant-position oil cup 109 is mounted on one side of the bearing housing 101.
Meanwhile, the invention also provides a vertical multistage pump, which comprises a pump housing 6, wherein a pump shaft 3 is arranged in the pump housing 6, a plurality of impellers are arranged on the pump shaft 3, a pump suction chamber 4 is positioned at the lower part of the pump housing 6, a pump outlet 5 is positioned at the upper part of the pump housing 6, the vertical multistage pump also comprises the bearing component, a guide bearing 2 of the bearing component is positioned below the pump suction chamber and is arranged at the lower end of the pump shaft 3; the bearing body 1 of the bearing component is sleeved at the upper end of the pump shaft 3. The vertical multistage pump is installed in the civil engineering 9 with the upper layer and the lower layer, and if the guide bearing 2 is damaged, the guide bearing 2 gland is opened at the lower layer of the civil engineering 9 for maintenance.
The above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto. Various equivalent modifications and substitutions will readily occur to those skilled in the art within the scope of the present disclosure, and these modifications and substitutions are intended to be included within the scope of the present disclosure.
Claims (6)
1. The utility model provides a vertical pump bearing unit which characterized in that: comprises a bearing body (1) arranged at the upper end of the vertical pump and a guide bearing (2) arranged at the lower end of the vertical pump;
the bearing body (1) comprises a bearing box body (101) and a bearing cover (102), an oil tank (103) is arranged in the bearing box body (101), and the bearing cover (102) is positioned above the bearing box body (101);
a thrust roller bearing (104) and a thrust head (105) which are matched with the pump shaft are sequentially arranged in the bearing box body (101) from bottom to top along the axial direction, and a self-aligning roller bearing (106) is arranged at the upper part of the thrust head (105);
an oil delivery hole (107) is formed in the middle of the thrust head (105), and the setting angle of the oil delivery hole (107) is aligned with the roller center of the self-aligning roller bearing (106);
the thrust roller bearing (104), the middle part and the lower part of the thrust head (105) and the pump shaft are respectively provided with a pressurizing sleeve (113), and the lower end of the pressurizing sleeve is in seamless connection with the bearing box body (101);
a first thread (110) with the direction opposite to the rotation direction of the pump shaft is arranged on the inner side of the thrust head (105) which is close to the pressurizing sleeve and is positioned above the oil delivery hole inlet (112);
a second thread (111) with the same direction as the rotation direction of the pump shaft is arranged on the inner side of the thrust head (105) immersed in the oil tank (103);
the bearing part further comprises a guide bearing gland (7) for axially fixing the guide bearing (2); the lower part of the guide bearing gland (7) is provided with a flushing pipe joint (8) for externally connecting a flushing pipe.
2. The bearing member for a vertical pump according to claim 1, characterized in that: the first thread (110) and the second thread (111) are both in clearance fit with the pressure sleeve.
3. The bearing member for a vertical pump according to claim 2, characterized in that: the periphery of an oil tank (103) of the bearing box body (101) is provided with a water cooling jacket (108).
4. A bearing component for a vertical pump according to claim 3, wherein: and a constant-position oil cup (109) is arranged on the bearing box body (101).
5. The bearing member for a vertical pump according to claim 4, wherein: five oil delivery holes (107) with the diameter of 8mm are uniformly formed in the thrust head (105).
6. A vertical multistage pump comprises a pump housing (6), wherein a pump shaft (3) is arranged in the pump housing, a plurality of impellers are arranged on the pump shaft, and a pump suction chamber (4) is positioned at the lower part of the pump housing (6); the method is characterized in that: the pump further comprises a bearing component as claimed in any one of claims 1 to 5, wherein a guide bearing (2) of the bearing component is positioned below the pump suction chamber and is arranged at the lower end of the pump shaft; the bearing body (1) of the bearing component is sleeved at the upper end of the pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464827.8A CN108240350B (en) | 2017-12-28 | 2017-12-28 | Bearing component for vertical pump and vertical multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464827.8A CN108240350B (en) | 2017-12-28 | 2017-12-28 | Bearing component for vertical pump and vertical multi-stage pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108240350A CN108240350A (en) | 2018-07-03 |
| CN108240350B true CN108240350B (en) | 2023-12-01 |
Family
ID=62701211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711464827.8A Active CN108240350B (en) | 2017-12-28 | 2017-12-28 | Bearing component for vertical pump and vertical multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240350B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017310B (en) * | 2021-09-09 | 2023-06-13 | 广州市昕恒泵业制造有限公司 | Oil circulation structure of water pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5558491A (en) * | 1993-09-17 | 1996-09-24 | Andrews; Darrell G. | Unitized product seal for pumps |
| CN200946584Y (en) * | 2006-08-15 | 2007-09-12 | 上海凯泉泵业（集团）有限公司 | Bearing member device of vertical type axial and mixed-flow pump |
| CN104895826A (en) * | 2015-05-07 | 2015-09-09 | 安徽三联泵业股份有限公司 | Bearing part for vertical multi-stage pump |
| CN105179226A (en) * | 2015-10-13 | 2015-12-23 | 襄阳五二五泵业有限公司 | Vertical pump bearing oil lubrication structure |
| CN207935145U (en) * | 2017-12-28 | 2018-10-02 | 西安航天泵业有限公司 | A kind of vertical pump parts of bearings and MODEL VERTICAL MULTISTAGE PUMP |
-
2017
- 2017-12-28 CN CN201711464827.8A patent/CN108240350B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5558491A (en) * | 1993-09-17 | 1996-09-24 | Andrews; Darrell G. | Unitized product seal for pumps |
| CN200946584Y (en) * | 2006-08-15 | 2007-09-12 | 上海凯泉泵业（集团）有限公司 | Bearing member device of vertical type axial and mixed-flow pump |
| CN104895826A (en) * | 2015-05-07 | 2015-09-09 | 安徽三联泵业股份有限公司 | Bearing part for vertical multi-stage pump |
| CN105179226A (en) * | 2015-10-13 | 2015-12-23 | 襄阳五二五泵业有限公司 | Vertical pump bearing oil lubrication structure |
| CN207935145U (en) * | 2017-12-28 | 2018-10-02 | 西安航天泵业有限公司 | A kind of vertical pump parts of bearings and MODEL VERTICAL MULTISTAGE PUMP |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108240350A (en) | 2018-07-03 |
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