CN114688070A - Air-cooled self-lubricating bearing component and method of using same - Google Patents
Air-cooled self-lubricating bearing component and method of using same Download PDFInfo
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- CN114688070A CN114688070A CN202210145418.6A CN202210145418A CN114688070A CN 114688070 A CN114688070 A CN 114688070A CN 202210145418 A CN202210145418 A CN 202210145418A CN 114688070 A CN114688070 A CN 114688070A
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- centrifugal impeller
- lubricating
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 210000004907 gland Anatomy 0.000 claims abstract description 35
- 239000003921 oil Substances 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 230000008878 coupling Effects 0.000 claims abstract description 19
- 238000010168 coupling process Methods 0.000 claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 239000010687 lubricating oil Substances 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000498 cooling water Substances 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mounting Of Bearings Or Others (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to an air-cooled self-lubricating bearing component and a method for using the same, the air-cooled self-lubricating bearing component comprises: drive end bearing part and non-drive end bearing part, the two adopts same rotation axis, and the two all includes: the centrifugal impeller comprises a bearing body, an inner gland, an outer gland, a shaft sleeve, an oil slinger, a centrifugal impeller fan, an air inlet guide sleeve and a coupling; the end part of the rotating shaft is provided with a centrifugal impeller fan, and the tail end of the bearing body is provided with an air inlet guide sleeve; the shaft coupling is sleeved on the rotating shaft, and a centrifugal impeller fan is installed on the shaft coupling; an oil slinger is arranged on the shaft sleeve. The invention has reasonable structure, the inner gland and the outer gland are dustproof, water enters the bearing body and prevents lubricating oil from leaking. The radial and axial arrangement scheme of the bearing body radiating fins is matched with a design method of a forced air cooling structure of an air inlet guide sleeve and a centrifugal impeller fan, so that the bearing component is efficiently cooled, and the bearing body radiating fins can reliably replace a high-temperature medium application environment without bearing cooling water.
Description
Technical Field
The invention relates to a bearing component and a method for air-cooling the bearing component, in particular to an air-cooling self-lubricating bearing component which has reasonable structure and good heat dissipation effect, is waterproof and dustproof and enters a bearing body and prevents lubricating oil from leaking and a method for adopting the air-cooling self-lubricating bearing component.
Background
At present, in the application of a horizontal multistage centrifugal pump with a self-lubricating bearing, under the condition of high-temperature media, heat insulation, heat dissipation and cooling configurations are required to be added so as to promote the temperature of the bearing to be stable and normal and ensure the normal use of the bearing.
Under the condition that the medium temperature reaches 180 ℃ or above, the bearing is applied to the conditions that a heat insulation cavity externally connected with cooling water is additionally arranged at the front end of a bearing body, a water cooling cavity is additionally arranged on the bearing body, radiating fins are additionally arranged on the bearing body, and a fan is additionally arranged on a rotating shaft. However, some application occasions can not provide cooling water or the water-cooled bearing body form is not recommended based on special accident condition consideration; and the air cooling mode is also natural air cooling or the design of a fan is not reasonable enough and the effect is not good enough.
Disclosure of Invention
In view of the above problems, the main object of the present invention is to provide an air-cooled self-lubricating bearing component and a method for using the same, which has a reasonable structure, a good heat dissipation effect, and is waterproof and dustproof to enter the bearing body and prevent the leakage of the lubricating oil.
The invention solves the technical problems through the following technical scheme: an air-cooled self-lubricating bearing component comprising: drive end bearing part and non-drive end bearing part, the two symmetrical arrangement of drive end bearing part and non-drive end bearing part, drive end bearing part and non-drive end bearing part adopt same rotation axis, and drive end bearing part and non-drive end bearing part all include: the centrifugal impeller comprises a bearing body, an inner gland, an outer gland, a shaft sleeve, an oil slinger, a centrifugal impeller fan, an air inlet guide sleeve and a coupling; the rotating shaft is arranged in the center of the bearing body, a bearing is arranged between the rotating shaft and the bearing body, the bearing is positioned between the inner gland and the outer gland, the end surface of the bearing body is provided with radial radiating fins, the cylindrical surface is provided with axial radiating fins, the end part of the rotating shaft is provided with a centrifugal impeller fan, and the tail end of the bearing body and the inlet of the centrifugal impeller fan are provided with an air inlet guide sleeve; the shaft coupling is sleeved on the rotating shaft, and a centrifugal impeller fan is installed on the shaft coupling; and the shaft sleeve is provided with an oil slinger which slings lubricating oil at the lower part of the bearing body to the side wall of the bearing body and the inner wall of the outer pressing cover.
In an embodiment of the invention, the coupling, shaft and centrifugal impeller fan rotate in unison, drawing air through the central opening of the air intake shroud, and subsequently generating a high pressure radial air flow.
In an embodiment of the present invention, the centrifugal impeller fan is fixedly mounted on the coupling by bolts.
In the embodiment of the invention, three supports for installing the air inlet guide sleeve are also arranged on the bearing body.
In the embodiment of the invention, the air inlet guide sleeve is fixedly arranged on the three supports by a bolt fastening mode and further fixed on the bearing body.
In an embodiment of the invention, the radial fins are connected to the axial fins.
In the specific implementation example of the invention, the left side and the right side of the bearing body are respectively provided with an oil filling interface and an oil level observation window interface.
In the embodiment of the invention, the inner holes of the inner gland and the outer gland are provided with sealing grooves and drain holes.
A method of using an air-cooled self-lubricating bearing component: the method comprises the following steps:
step 1: the end surface of the bearing body is provided with radial radiating fins, and the cylindrical surface is provided with axial radiating fins; the radial radiating fins are connected with the axial radiating fins to form a flow guide channel from the radial direction to the axial direction;
step 2: the end part of the rotating shaft is provided with a centrifugal impeller fan, and the rotating speed is synchronous with that of the rotating shaft to generate radial high-pressure airflow;
and step 3: an air inlet guide sleeve is arranged at the tail end of the bearing body and at the inlet of the centrifugal impeller fan, so that the centrifugal impeller can efficiently suck air from the end part; meanwhile, the safety protection effect is achieved for personnel;
and 4, step 4: the special shape of the air guide sleeve firstly guides radial airflow into axial direction, and simultaneously, the air guide sleeve and the radiating fins form a channel, so that the airflow can be efficiently discharged from the radial direction to the axial direction around the oil chamber of the bearing body, and the cooling effect is enhanced.
The positive progress effects of the invention are as follows: the air-cooled self-lubricating bearing component and the method adopting the same have reasonable structure, and the inner gland and the outer gland prevent dust, water enters the bearing body and prevents lubricating oil from leaking. The radial and axial arrangement scheme of the bearing body radiating fins is matched with a forced air cooling structure design method of an air inlet guide sleeve and a centrifugal impeller fan, so that the bearing component is efficiently cooled, the high-temperature medium application environment without bearing cooling water can be reliably replaced, and the bearing body radiating fins are convenient to manufacture, install and maintain and easy to popularize.
Drawings
Fig. 1 is a schematic view of the structure of a drive end bearing part of the present invention.
Fig. 2 is a schematic view of the non-drive end bearing component structure of the present invention.
Fig. 3 is a left side view of the bearing body of fig. 1 in accordance with the present invention.
Fig. 4-1 is a front view of the inner gland of the present invention.
Fig. 4-2 is a cross-sectional view a-a of fig. 4-1.
Fig. 4-3 is an enlarged view at E of fig. 4-2.
Fig. 5-1 is a front view of the outer pressure cap in the present invention.
Fig. 5-2 is a cross-sectional view B-B of fig. 5-1.
Fig. 5-3 is an enlarged view at F of fig. 5-2.
The following are the names corresponding to the reference numbers in the invention:
the oil level monitoring device comprises a rotating shaft 10, an adjusting pad 11, a bearing 12, a shaft sleeve 13, a round nut 14, an oil filling interface 15, an oil level observation window interface 16 and a coupling 17;
the centrifugal impeller comprises an inner gland 100, a bearing body 200, an oil slinger 300, an outer gland 400, a centrifugal impeller fan 500, an air inlet guide sleeve 600, a seal groove 700 and a drain hole 800;
radial fins 201, axial fins 202, supports 203;
Detailed Description
The following provides a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic view of a drive end bearing component of the present invention, and fig. 2 is a schematic view of a non-drive end bearing component of the present invention, as shown in fig. 1 and 2: the invention provides a forced air cooling self-lubricating bearing component, comprising: drive end bearing part and non-drive end bearing part, the two symmetrical arrangement of drive end bearing part and non-drive end bearing part, drive end bearing part and non-drive end bearing part adopt same rotation axis 10, and drive end bearing part and non-drive end bearing part all include: the centrifugal impeller comprises a bearing body 200, an inner gland 100, an outer gland 400, a shaft sleeve 13, an oil slinger 300, a centrifugal impeller fan 500, an air inlet guide sleeve 600 and a coupler 17; the rotating shaft 10 is arranged in the center of the bearing body 200, the bearing 12 is arranged between the rotating shaft 10 and the bearing body 200, the bearing 12 is positioned between the inner gland 100 and the outer gland 400, the end surface of the bearing body 200 is provided with radial radiating fins, the cylindrical surface is provided with axial radiating fins, the end part of the rotating shaft 10 is provided with a centrifugal impeller fan, and the tail end of the bearing body 200 and the inlet of the centrifugal impeller fan 500 are provided with an air inlet guide sleeve 600; the coupling 17 is sleeved on the rotating shaft 10, and the centrifugal impeller fan 500 is installed on the coupling 17; the shaft sleeve 13 is provided with an oil slinger 300 for slinging the lubricating oil at the lower part of the bearing body 200 to the side wall of the bearing body 200 and the inner wall of the outer gland 400.
The coupling 17, the rotary shaft 10 and the centrifugal impeller fan 500 rotate in synchronization, drawing air through the central hole of the intake shroud 600, and then generating a high-pressure radial air flow. In a specific implementation, the centrifugal impeller fan 500 is fixedly mounted on the coupling 17 by a third bolt 501.
The rotating shaft 10 is arranged in the center of the bearing body, various standard bearings 12 are arranged between the rotating shaft and the bearing body as required, and the bearings 12 and the rotating shaft 10 are axially positioned through the inner gland 100, the adjusting pad 11, the outer gland 400, the shaft sleeve 13 and the round nut 14.
In a specific implementation process, the inner gland 100 is fixed on the bearing body 200 by a first bolt 101, and the outer gland 400 is fixed on the bearing body 200 by a second bolt 401.
Fig. 3 is a left side view of the bearing body of fig. 1 of the present invention, as shown in fig. 3: the bearing body 200 provided by the invention is also provided with three supports 203 for mounting the air inlet guide sleeve 600, and in the specific implementation process, the air inlet guide sleeve 600 is fixedly mounted on the three supports 203 in a bolt fastening mode and further fixed on the bearing body 200.
The end face of the bearing body 200 is provided with a reasonable number of radial radiating fins 201, the outer circumferential face is provided with a reasonable number of axial radiating fins 202, and the air inlet guide sleeve 600, the radial radiating fins 201 of the bearing body 200 and the axial radiating fins 202 form a closed air duct which surrounds the outer wall of the bearing body 200 from the radial direction to the axial direction. At this time, the high-pressure air flow generated by the centrifugal impeller fan 500 can efficiently flow at a high speed along the closed air duct from the radial direction to the axial direction, and is finally discharged along the end of the axial heat sink 202, so as to forcibly remove the heat of the bearing body 200, thereby efficiently reducing the temperature of the bearing 12.
The left side and the right side of the bearing body 200 are respectively provided with an oil filling interface 15 and an oil level observation window interface 16, and an automatic oil supply device and an oil indicator are installed for oil supply and oil level monitoring at any time.
The oil slinger 300 is arranged on the shaft sleeve 13, the claw-shaped design of the outer gland 400 is used for limiting and realizing rotation, lubricating oil at the lower part of the bearing body 200 is thrown to the side wall of the bearing body 200 and the inner wall of the outer gland 400, and the effects of cooling oil temperature and cooling and lubricating the bearing 12 are achieved.
The centrifugal impeller fan 500 is mounted on the end face of the coupling 17 and the end face of the rotating shaft 10 through a third bolt 501, and the fan synchronously rotates with the rotating shaft 10, sucks air through a central hole of the air inlet guide sleeve 600, and then generates high-pressure radial air flow.
Figure 4-1 is a front view of the inner gland of the present invention. Fig. 4-2 is a cross-sectional view a-a of fig. 4-1. Fig. 4-3 is an enlarged view at E of fig. 4-2. Fig. 5-1 is a front view of the outer pressure cap in the present invention. Fig. 5-2 is a cross-sectional view B-B of fig. 5-1. Fig. 5-3 is an enlarged view at F of fig. 5-2. As shown in the above figures: the inner gland 100 and the outer gland 400 are provided with a sealing groove 700 and a drain hole 800 at the inner holes, so that solid foreign matters and water can be effectively prevented from entering the bearing body 200, and the lubricating oil in the bearing body 200 can be effectively prevented from leaking.
The invention also provides a method for reducing the temperature of the bearing body by adopting air-cooled airflow, which comprises the following steps: the method comprises the following steps:
step 1: the end surface of the bearing body is provided with radial radiating fins, and the cylindrical surface is provided with axial radiating fins; the radial radiating fins are connected with the axial radiating fins to form a flow guide channel from the radial direction to the axial direction;
step 2: the end part of the rotating shaft is provided with a centrifugal impeller fan, and the rotating speed is synchronous with that of the rotating shaft to generate radial high-pressure airflow;
and step 3: an air inlet guide sleeve is arranged at the tail end of the bearing body and at the inlet of the centrifugal impeller fan, so that the centrifugal impeller can efficiently suck air from the end part; meanwhile, the safety protection effect is achieved for personnel;
and 4, step 4: the special shape of the air guide sleeve firstly guides radial airflow into axial direction, and simultaneously, the air guide sleeve and the radiating fins form a channel, so that the airflow can be efficiently discharged from the radial direction to the axial direction around the oil chamber of the bearing body, and the cooling effect is enhanced.
The following is a specific working process of the invention:
before starting, oil is filled from the oil filling hole at the upper part of the bearing body 200, and the oil level is displayed at the central position of the oil level indicator at the oil level observation window interface 16. After the machine is started, the oil slinger 300 rotates under the action of the rotating shaft 10, so that the bearing is splashed and lubricated, heat generated by the bearing 12 is brought back to an oil pool through lubricating oil, and hot oil is splashed to the outer wall of the bearing body 200. The radial radiating fins 201 and the axial radiating fins 202 on the outer wall of the bearing body 200 increase the heat exchange area, the centrifugal impeller fan 500 works simultaneously, and high-pressure and high-speed airflow efficiently flows through the closed air duct and is discharged from the tail ends of the axial radiating fins 202 through the combined effect of the air inlet guide sleeve 600, the radial radiating fins 201 and the axial radiating fins 202, so that heat is taken away by the forced air cooling bearing body 200, and the efficient air cooling effect is achieved.
The invention adopts the forced air cooling design, the cooling effect is better than that of the common air cooling bearing, and the water cooling bearing can be replaced; the trouble of externally connecting cooling water to the water-cooled bearing is saved during use, and the operation of switching on and off the cooling water before and after starting up is saved; the manufacturing difficulty and leakage risk of the water cooling cavity and the cooling pipeline of the water cooling bearing are avoided; the forced air cooling bearing part has simple structure, is convenient to manufacture, install and use and is easy to popularize.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (9)
1. An air-cooled self-lubricating bearing component characterized by: the air-cooled self-lubricating bearing component includes: a drive end bearing component and a non-drive end bearing component,
both the drive end bearing part and the non-drive end bearing part are arranged symmetrically,
the driving end bearing part and the non-driving end bearing part adopt the same rotating shaft,
the drive end bearing member and the non-drive end bearing member each include: the centrifugal impeller comprises a bearing body, an inner gland, an outer gland, a shaft sleeve, an oil slinger, a centrifugal impeller fan, an air inlet guide sleeve and a coupling;
the rotating shaft is arranged in the center of the bearing body, a bearing is arranged between the rotating shaft and the bearing body,
the bearing is positioned between the inner gland and the outer gland,
the end surface of the bearing body is provided with radial radiating fins, the cylindrical surface is provided with axial radiating fins,
the end part of the rotating shaft is provided with a centrifugal impeller fan, and the tail end of the bearing body and the inlet of the centrifugal impeller fan are provided with an air inlet guide sleeve;
the shaft coupling is sleeved on the rotating shaft, and a centrifugal impeller fan is installed on the shaft coupling;
and the shaft sleeve is provided with an oil slinger which slings lubricating oil at the lower part of the bearing body to the side wall of the bearing body and the inner wall of the outer pressing cover.
2. The air-cooled self-lubricating bearing component of claim 1, wherein: the coupling, the rotating shaft and the centrifugal impeller fan rotate synchronously, air is sucked through the central hole of the air inlet guide cover, and then high-pressure radial airflow is generated.
3. The air-cooled self-lubricating bearing component of claim 1, wherein: the centrifugal impeller fan is fixedly arranged on the coupling through bolts.
4. The air-cooled self-lubricating bearing component of claim 1, wherein: three supports for installing air inlet guide covers are further arranged on the bearing body.
5. The air-cooled self-lubricating bearing component of claim 4, wherein: the air inlet guide cover is fixedly arranged on the three supports in a bolt fastening mode and further fixed on the bearing body.
6. The air-cooled self-lubricating bearing component of claim 1, wherein: the radial cooling fins are connected with the axial cooling fins.
7. The air-cooled self-lubricating bearing component of claim 1, wherein: the left side and the right side of the bearing body are respectively provided with an oil filling interface and an oil level observation window interface.
8. The air-cooled self-lubricating bearing component of claim 1, wherein: and the inner holes of the inner gland and the outer gland are provided with sealing grooves and drain holes.
9. A method of using an air-cooled self-lubricating bearing component: the method is characterized in that: the method comprises the following steps:
step 1: the end face of the bearing body is provided with radial radiating fins, and the cylindrical surface is provided with axial radiating fins; the radial radiating fins are connected with the axial radiating fins to form a flow guide channel from the radial direction to the axial direction;
step 2: the end part of the rotating shaft is provided with a centrifugal impeller fan, and the rotating speed is synchronous with that of the rotating shaft to generate radial high-pressure airflow;
and step 3: an air inlet guide sleeve is arranged at the tail end of the bearing body and at the inlet of the centrifugal impeller fan, so that the centrifugal impeller can efficiently suck air from the end part; meanwhile, the safety protection effect is achieved for personnel;
and 4, step 4: the special shape of the air guide sleeve firstly guides radial airflow into axial direction, and simultaneously, the air guide sleeve and the radiating fins form a channel, so that the airflow can be efficiently discharged from the radial direction to the axial direction around the oil chamber of the bearing body, and the cooling effect is enhanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210145418.6A CN114688070A (en) | 2022-02-17 | 2022-02-17 | Air-cooled self-lubricating bearing component and method of using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210145418.6A CN114688070A (en) | 2022-02-17 | 2022-02-17 | Air-cooled self-lubricating bearing component and method of using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114688070A true CN114688070A (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210145418.6A Pending CN114688070A (en) | 2022-02-17 | 2022-02-17 | Air-cooled self-lubricating bearing component and method of using same |
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| CN (1) | CN114688070A (en) |
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| CN203130620U (en) * | 2013-03-04 | 2013-08-14 | 上海凯泉泵业（集团）有限公司 | Air cooling bearing structure |
| CN104074793A (en) * | 2014-06-20 | 2014-10-01 | 浙江科尔泵业股份有限公司 | Double-lubrication type thrust bearing device for centrifugal pump |
| CN204553313U (en) * | 2015-01-30 | 2015-08-12 | 昆明嘉和科技股份有限公司 | The special centrifugal pump bearing part of petrochemical industry |
| CN205977775U (en) * | 2016-05-26 | 2017-02-22 | 昆明嘉和科技股份有限公司 | Chemical pump is supported at modified single -stage double suction, radial subdivision, both ends |
| CN205977697U (en) * | 2016-05-26 | 2017-02-22 | 昆明嘉和科技股份有限公司 | Chemical pump is supported at modified two -stage, chopped -off head double suction, radial subdivision, both ends |
| US20180245636A1 (en) * | 2015-08-19 | 2018-08-30 | Daido Metal Company Ltd. | Vertical bearing device |
-
2022
- 2022-02-17 CN CN202210145418.6A patent/CN114688070A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203130620U (en) * | 2013-03-04 | 2013-08-14 | 上海凯泉泵业（集团）有限公司 | Air cooling bearing structure |
| CN104074793A (en) * | 2014-06-20 | 2014-10-01 | 浙江科尔泵业股份有限公司 | Double-lubrication type thrust bearing device for centrifugal pump |
| CN204553313U (en) * | 2015-01-30 | 2015-08-12 | 昆明嘉和科技股份有限公司 | The special centrifugal pump bearing part of petrochemical industry |
| US20180245636A1 (en) * | 2015-08-19 | 2018-08-30 | Daido Metal Company Ltd. | Vertical bearing device |
| CN205977775U (en) * | 2016-05-26 | 2017-02-22 | 昆明嘉和科技股份有限公司 | Chemical pump is supported at modified single -stage double suction, radial subdivision, both ends |
| CN205977697U (en) * | 2016-05-26 | 2017-02-22 | 昆明嘉和科技股份有限公司 | Chemical pump is supported at modified two -stage, chopped -off head double suction, radial subdivision, both ends |
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Application publication date: 20220701 |