CN213419704U - Self-circulation lubricating and cooling structure for bearing at end part of spindle of centrifugal pump - Google Patents
Self-circulation lubricating and cooling structure for bearing at end part of spindle of centrifugal pump Download PDFInfo
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- CN213419704U CN213419704U CN202022474599.6U CN202022474599U CN213419704U CN 213419704 U CN213419704 U CN 213419704U CN 202022474599 U CN202022474599 U CN 202022474599U CN 213419704 U CN213419704 U CN 213419704U
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Abstract
The utility model discloses a centrifugal pump spindle nose portion bearing is with self-loopa lubrication cooling structure, including the main shaft, main shaft one end is worn to establish in the bearing frame, is equipped with first cavity and the second cavity of installing antifriction bearing and slide bearing respectively in the bearing frame, and the cavity that lies in the antifriction bearing below in the first cavity is the antifriction bearing oil pocket, and the cavity that lies in the slide bearing below in the second cavity is the slide bearing oil pocket still be equipped with the oil pump on the main shaft, the oil inlet and the antifriction bearing oil pocket upper portion intercommunication of oil pump, through advancing oil pipe intercommunication between the oil-out of oil pump and the cooler oil inlet, lubricating oil flows in the antifriction bearing oil pocket after lubricating the antifriction bearing in getting into the first cavity through the antifriction bearing oil inlet, and lubricating the slide bearing oil pocket after. The utility model discloses can carry out the circulating lubrication to the bearing, need not external force lubrication oil station can effectively cool off lubricating oil, improves the life of bearing.
Description
Technical Field
The utility model belongs to the technical field of the bearing cooling, especially, relate to a self-loopa lubrication cooling structure for centrifugal pump spindle nose portion bearing.
Background
The bearing is the basis for guaranteeing the safe and continuous operation of the centrifugal pump, a rolling bearing and a sliding bearing which are used for respectively bearing axial force and radial force are usually sleeved at one end of a main shaft of the centrifugal pump, and when the main shaft runs at a high speed, the bearing needs to be lubricated and cooled to prevent the bearing from losing efficacy. The conventional bearing lubrication mode is shown in figure 2, and comprises a bearing seat 2 formed by assembling a bearing cover and a bearing body, a main shaft 1 penetrates through the bearing seat, a first cavity and a second cavity which are respectively provided with a rolling bearing 3 and a sliding bearing 4 are arranged in the bearing seat, the rolling bearing 3 sleeved on the main shaft is arranged in the first cavity, the sliding bearing 4 sleeved on the main shaft is arranged in the second cavity, a cavity below the rolling bearing in the first cavity is a rolling bearing oil cavity 5, a cavity below the sliding bearing in the second cavity is a sliding bearing oil cavity 6, a cooling fan 7 is coaxially arranged on the main shaft and outside the rolling bearing and the sliding bearing, a heat dissipation rib plate is further arranged on the bearing seat, oil slingers are respectively arranged on the rolling bearing and the sliding bearing on the main shaft, and the lower parts of the corresponding oil slingers are respectively arranged below oil level lines, when the main shaft runs, lubricating oil in the oil cavity is splashed onto the rolling bearing and the sliding bearing under the action of centrifugal force, so that the rolling bearing and the sliding bearing are lubricated, and the generated heat is dissipated through the cooling fan and the heat dissipation rib plate.
However, in this way, since hot oil is in the upper layer of the oil cavity for a long time and cold oil is in the lower layer of the oil cavity, sufficient heat exchange cannot be achieved between the hot oil and the cold oil, so that the lubricating oil splashed to the rolling bearing and the sliding bearing by the oil slinger is always hotter oil, and in addition, the cooling fan and the heat dissipation rib plate arranged outside the bearing seat have limited effect on heat generated inside, and cannot completely dissipate heat, so that the using effect of the bearing is poor, and the service life of the bearing is influenced.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a self-loopa lubrication cooling structure for centrifugal pump main shaft tip bearing, can carry out the circulating lubrication to the bearing, effectively cool off lubricating oil, improve the life of bearing.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a self-circulation lubricating and cooling structure for a bearing at the end part of a spindle of a centrifugal pump comprises a spindle, wherein one end of the spindle is arranged in a bearing seat in a penetrating manner, a first cavity and a second cavity which are respectively provided with a rolling bearing and a sliding bearing are arranged in the bearing seat, the rolling bearing sleeved on the spindle is arranged in the first cavity, the sliding bearing sleeved on the spindle is arranged in the second cavity, a cavity below the rolling bearing in the first cavity is a rolling bearing oil cavity, a cavity below the sliding bearing in the second cavity is a sliding bearing oil cavity, a cooling fan is coaxially arranged at the outer side of the rolling bearing and the sliding bearing on the spindle, a cooler is further arranged at the inner side of the cooling fan on the side wall of the bearing seat, the cooler is provided with a cooler oil inlet and a cooler oil outlet, and the cooler oil outlet is respectively communicated, the lower portion of the sliding bearing oil cavity is communicated with the lower portion of the rolling bearing oil cavity, an oil pump is further arranged on the main shaft, an oil inlet of the oil pump is communicated with the upper portion of the rolling bearing oil cavity, an oil outlet of the oil pump is communicated with an oil inlet of the cooler through an oil inlet pipe, an oil inlet of the rolling bearing is arranged above the first cavity and communicated with the first cavity, an oil inlet of the sliding bearing is arranged above the second cavity and communicated with the second cavity, lubricating oil enters the first cavity through the oil inlet of the rolling bearing and lubricates the rolling bearing and then flows into the rolling bearing oil cavity, and the lubricating oil enters the second cavity.
As an optimization, an oil filling port is radially formed in an upper bearing bush of the sliding bearing, the oil filling port is communicated with a lining of the sliding bearing, oil return channels are respectively formed in two axial ends of the lining, the bottom end of each oil return channel is connected with an oil return pipe, and an outlet of each oil return pipe is located at the bottom of an oil cavity of the sliding bearing.
Preferably, the rolling bearings are arranged on the main shaft in pairs, a spacer sleeve is arranged between the two rolling bearings, a first oil slinger is sleeved on the spacer sleeve, and the lower part of the first oil slinger is positioned below an oil level line of an oil cavity of the rolling bearing.
Preferably, the oil injection port is formed in the center of the upper bearing bush, the upper bearing bush is provided with a groove along the circumferential direction of the upper bearing bush, the lower end of the oil injection port is communicated with the groove, the main shaft is further sleeved with a second oil slinger, the upper portion of the second oil slinger is located in the groove, and the lower portion of the second oil slinger is located below an oil level line of an oil cavity of the sliding bearing.
Preferably, the oil inlet of the rolling bearing and the oil inlet of the sliding bearing are detachably clamped with a flow limiting piece, the flow limiting piece is of a cylindrical structure, and a through hole is vertically formed in the center of the flow limiting piece.
Preferably, the inner ring of the rolling bearing is fixedly connected to the main shaft, the outer ring of the rolling bearing is in interference fit with a bearing clamping sleeve, and the bearing clamping sleeve is connected with the bearing seat through an anti-rotation clamping pin arranged along the radial direction.
Preferably, a protective cover is further arranged on one side of the bearing seat, and the cooling fan and the cooler are located in the protective cover.
Preferably, the rolling bearing is located on the outer side of the sliding bearing, an oil discharge opening is formed in the bottom of an oil cavity of the rolling bearing, and an oil discharge switch is arranged at the oil discharge opening.
Compared with the prior art, the utility model following beneficial effect has: the utility model discloses a set up the cooler, the oil-out of cooler communicates through oil pipe and antifriction bearing oil inlet and slide bearing oil inlet, the oil inlet of cooler communicates with the oil-out of oil pump, the oil inlet of oil pump communicates with antifriction bearing oil pocket upper portion, the oil pump is gone into the lubricating oil pump in the oil pocket in the cooler and is cooperated cooling fan to cool off, the cooler lets in the lubricating oil after the cooling in antifriction bearing and the first cavity and the second cavity that slide bearing is located, flow into respective oil pocket after having lubricated antifriction bearing and slide bearing, and the antifriction bearing oil pocket communicates with slide bearing oil pocket lower part, thereby form a closed circulative cooling oil circuit, the lubricating oil that antifriction bearing and slide bearing obtained all is through the cooler refrigerated, the lubricating oil that flows into the slide bearing oil pocket after the lubrication is hot oil, it gets into the antifriction bearing oil pocket by, hot oil is sucked into the cooler by the oil pump after automatically floating up, so that the circulating lubrication cooling is realized, the using effect on the rolling bearing and the sliding bearing is better, and the service life of the bearing can be prolonged.
Drawings
Figure 1 is a cross-sectional view of an embodiment of the invention;
fig. 2 is a cross-sectional view of the prior art.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the specific implementation: referring to fig. 1, a self-circulation lubrication cooling structure for a bearing at the end of a main shaft of a centrifugal pump comprises a main shaft 1, wherein one end of the main shaft is arranged in a bearing seat 2 in a penetrating manner, a first cavity and a second cavity which are respectively provided with a rolling bearing 3 and a sliding bearing 4 are arranged in the bearing seat, the rolling bearing 3 which is arranged on the main shaft in a sleeved manner is arranged in the first cavity, the sliding bearing 4 which is arranged on the main shaft in a sleeved manner is arranged in the second cavity, a cavity which is arranged below the rolling bearing in the first cavity is a rolling bearing oil cavity 5, a cavity which is arranged below the sliding bearing in the second cavity is a sliding bearing oil cavity 6, a cooling fan 7 is coaxially arranged on the main shaft and is arranged on the outer side of the rolling bearing and the sliding bearing, a cooler 8 is further arranged on the inner side of the cooling fan on the side The oil inlet of the oil pump is communicated with the upper portion of the oil cavity 5 of the rolling bearing, an oil outlet of the oil pump is communicated with an oil inlet of a cooler 8 through an oil inlet pipe 11, the oil inlet of the rolling bearing is arranged above the first cavity and communicated with the first cavity, the oil inlet of the sliding bearing is arranged above the second cavity and communicated with the second cavity, lubricating oil enters the first cavity through the oil inlet of the rolling bearing and lubricates the rolling bearing 3 and then flows into the oil cavity 5 of the rolling bearing, and the lubricating oil enters the second cavity through the oil inlet of the sliding bearing and lubricates the sliding bearing 4 and then flows into the oil cavity 6 of the sliding bearing.
Therefore, the utility model discloses a set up cooler 8, the oil-out of cooler is through going out oil pipe and antifriction bearing oil inlet and slide bearing oil inlet intercommunication, the oil inlet of cooler and the oil-out intercommunication of oil pump 10, the oil inlet and the intercommunication of antifriction bearing oil pocket upper portion of oil pump, lubricating oil pump in with the oil pocket is gone into in the cooler and is cooled off with cooperation cooling fan 7, lubricating oil after the cooler will cool down lets in first cavity and the second cavity at antifriction bearing and slide bearing place, flow in respective oil pocket after lubricated antifriction bearing 3 and slide bearing 4, and antifriction bearing oil pocket 5 and 6 lower part intercommunications in the slide bearing oil pocket, thereby form a closed circulative cooling oil circuit. The lubricating oil that antifriction bearing and slide bearing obtained all is through the cooler refrigerated, and the lubricating oil that flows into the slide bearing oil pocket after the lubrication is hot oil, and it gets into the antifriction bearing oil pocket by slide bearing oil pocket bottom, and in the automatic back-floating of hot oil was inhaled the cooler by the oil pump, the cooling fan of cooperation coaxial setting carries out forced cooling, has realized the circulative cooling of lubricating oil to make antifriction bearing and slide bearing's result of use better, can prolong the life of bearing.
During implementation, an oil filling opening is formed in the upper bearing bush 12 of the sliding bearing 4 along the radial direction, the oil filling opening is communicated with the lining 13 of the sliding bearing, oil return channels 14 are arranged at two axial ends of the lining, the bottom end of each oil return channel is connected with an oil return pipe 15, and an outlet of each oil return pipe is located at the bottom of an oil cavity of the sliding bearing.
Therefore, the lubricating oil path of the sliding bearing is formed by arranging the oil filling port and the oil return channel, after the lubricating oil enters the second cavity, the lubricating oil enters the lining from the oil filling port and flows from the space between the lining and the bearing to two ends, the sliding bearing and the main shaft are lubricated while flowing, the lubricating oil flows into the oil return channel from two ends of the lining and finally flows into the bottom of the oil cavity of the sliding bearing, and the lubricating oil conveniently enters the oil cavity of the rolling bearing from the lower part of the oil cavity of the sliding bearing and is.
When the oil level control device is used, the rolling bearings 3 are arranged on the main shaft 1 in pairs, a spacer sleeve is arranged between the inner rings of the two rolling bearings, a first oil slinger 16 is sleeved on the spacer sleeve, and the lower part of the first oil slinger is positioned below the oil level line of the oil cavity 5 of the rolling bearing.
Thus, by providing the first oil slinger 16, the rolling bearing lubrication can be ensured to be effective as a backup option when the oil pump fails, so that the pump can be operated safely.
When the oil-spraying device is used, the oil injection port is formed in the center of the upper bearing bush 12, the upper bearing bush is provided with a groove along the circumferential direction of the upper bearing bush, the lower end of the oil injection port is communicated with the groove, the main shaft is further sleeved with a second oil slinger 17, the upper portion of the second oil slinger is located in the groove, and the lower portion of the second oil slinger is located below an oil level line of an oil cavity of the sliding bearing.
Thus, by arranging the second oil slinger 17, when the oil pump fails, the sliding bearing lubrication can be ensured to be effective as a backup option, so that the pump can run safely.
During implementation, the flow limiting piece 18 is detachably clamped in the oil inlet of the rolling bearing and the oil inlet of the sliding bearing, the flow limiting piece is of a cylindrical structure, and a through hole is vertically formed in the center of the flow limiting piece.
Therefore, the oil inlet amount is controlled by arranging the flow limiting piece 18, and the lubricating oil with different flow rates and flows can be matched with the flow limiting pieces with different through holes so as to meet the requirements of different working conditions.
During implementation, the inner ring of the rolling bearing is fixedly connected to the main shaft, the outer ring of the rolling bearing is in interference fit with a bearing clamping sleeve 19, and the bearing clamping sleeve is connected with the bearing seat through an anti-rotation clamping pin arranged along the radial direction.
In practice, a protective cover 20 is arranged on one side of the bearing seat, and the cooling fan 7 and the cooler 8 are positioned in the protective cover. Thus, the cooling fan and the cooler can be protected by the protective cover, and safety is improved.
When the device is used, the rolling bearing is positioned on the outer side of the sliding bearing, an oil discharge port 21 is arranged at the bottom of an oil cavity of the rolling bearing, and an oil discharge switch is arranged at the oil discharge port.
Therefore, the sliding bearing mainly plays a role in radial support, is arranged on the inner side, has shorter force arm and better effect, and can be conveniently filled and discharged with lubricating oil by arranging the oil discharge port.
When the lubricating oil pump is used, the rolling bearing is axially compressed, one end of the outer side of the rolling bearing is locked by the locking nut 22 arranged on the main shaft, a passage is arranged between the locking nut and the bearing seat, lubricating oil enters the first cavity through an oil inlet of the rolling bearing, one part of the lubricating oil flows into the rolling bearing and flows into an oil cavity of the rolling bearing along with the movement of the rolling bearing so as to lubricate the rolling bearing, the other part of the lubricating oil flows into the oil cavity of the rolling bearing through the passage, and the oil inlet of the oil pump is positioned below the oil level line of the oil cavity of the rolling bearing but above the first oil slinger and the second oil slinger, so that the first oil slinger and the second oil slinger can always bring the lubricating oil.
While embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents, and thus the embodiments of the invention are intended only as illustrative examples of the invention and no matter how the embodiments of the invention may be seen in any way limit the scope of the invention.
Claims (8)
1. The utility model provides a centrifugal pump spindle nose portion bearing is with self-loopa lubrication cooling structure, includes the main shaft, main shaft one end is worn to establish in the bearing frame, is equipped with first cavity and the second cavity of installing antifriction bearing and slide bearing respectively in the bearing frame, install the cover in the first cavity and establish at main epaxial antifriction bearing, install the cover in the second cavity and establish at main epaxial slide bearing, the cavity that lies in antifriction bearing below in the first cavity is the antifriction bearing oil pocket, the cavity that lies in the slide bearing below in the second cavity is the slide bearing oil pocket, lie in antifriction bearing and slide bearing outside department on the main shaft and still coaxial cooling fan that is provided with, its characterized in: a cooler is also arranged on the side wall of the bearing seat and positioned at the inner side of the cooling fan, the cooler is provided with a cooler oil inlet and a cooler oil outlet, the cooler oil outlet is respectively communicated with a rolling bearing oil inlet and a sliding bearing oil inlet which are arranged on the bearing seat through an oil outlet pipe, the lower part of a sliding bearing oil cavity is communicated with the lower part of the rolling bearing oil cavity, an oil pump is also arranged on the main shaft, an oil inlet of the oil pump is communicated with the upper part of an oil cavity of the rolling bearing, an oil outlet of the oil pump is communicated with an oil inlet of the cooler through an oil inlet pipe, the oil inlet of the rolling bearing is arranged above the first cavity and communicated with the first cavity, the oil inlet of the sliding bearing is arranged above the second cavity and communicated with the second cavity, lubricating oil enters the first cavity through the oil inlet of the rolling bearing and lubricates the rolling bearing and then flows into the oil cavity of the rolling bearing, and the lubricating oil enters the second cavity through the oil inlet of the sliding bearing and lubricates the sliding bearing and then flows into the oil cavity of the sliding bearing.
2. The self-circulation lubrication cooling structure for the spindle end bearing of the centrifugal pump according to claim 1, wherein: the oil injection structure is characterized in that an oil injection port is formed in the upper bearing bush of the sliding bearing along the radial direction, the oil injection port is communicated with the lining of the sliding bearing, oil return channels are arranged at two axial ends of the lining, the bottom end of each oil return channel is connected with an oil return pipe, and an outlet of each oil return pipe is located at the bottom of an oil cavity of the sliding bearing.
3. The self-circulation lubrication cooling structure for the spindle end bearing of the centrifugal pump according to claim 1, wherein: the rolling bearings are arranged on the main shaft in pairs, a spacer sleeve is arranged between the inner rings of the two rolling bearings, a first oil slinger is sleeved on the spacer sleeve, and the lower part of the first oil slinger is positioned below an oil level line of an oil cavity of the rolling bearing.
4. The self-circulation lubrication cooling structure for the spindle end bearing of the centrifugal pump according to claim 2, wherein: the oil injection port is formed in the center of the upper bearing bush, a groove is formed in the upper bearing bush along the circumferential direction of the upper bearing bush, the lower end of the oil injection port is communicated with the groove, a second oil slinger is further sleeved on the main shaft, the upper portion of the second oil slinger is located in the groove, and the lower portion of the second oil slinger is located below an oil level line of an oil cavity of the sliding bearing.
5. The self-circulation lubrication cooling structure for the spindle end bearing of the centrifugal pump according to claim 1, wherein: the oil inlet of the rolling bearing and the oil inlet of the sliding bearing are both detachably clamped with a flow limiting piece, the flow limiting piece is of a cylindrical structure, and a through hole is vertically formed in the center of the flow limiting piece.
6. The self-circulation lubrication cooling structure for the spindle end bearing of the centrifugal pump according to claim 1, wherein: the inner ring of the rolling bearing is fixedly connected to the main shaft, the outer ring of the rolling bearing is in interference fit with a bearing clamping sleeve, and the bearing clamping sleeve is connected with the bearing seat through an anti-rotation clamping pin arranged along the radial direction.
7. The self-circulation lubrication cooling structure for the spindle end bearing of the centrifugal pump according to claim 1, wherein: and a protective cover is further arranged on one side of the bearing seat, and the cooling fan and the cooler are located in the protective cover.
8. The self-circulation lubrication cooling structure for the spindle end bearing of the centrifugal pump according to claim 1, wherein: the rolling bearing is positioned on the outer side of the sliding bearing, an oil discharge port is arranged at the bottom of an oil cavity of the rolling bearing, and an oil discharge switch is arranged at the oil discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022474599.6U CN213419704U (en) | 2020-10-30 | 2020-10-30 | Self-circulation lubricating and cooling structure for bearing at end part of spindle of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022474599.6U CN213419704U (en) | 2020-10-30 | 2020-10-30 | Self-circulation lubricating and cooling structure for bearing at end part of spindle of centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN213419704U true CN213419704U (en) | 2021-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022474599.6U Active CN213419704U (en) | 2020-10-30 | 2020-10-30 | Self-circulation lubricating and cooling structure for bearing at end part of spindle of centrifugal pump |
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| CN (1) | CN213419704U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115263930A (en) * | 2022-09-22 | 2022-11-01 | 江苏华频电子科技有限公司 | Efficient cooling bearing for deep well pump |
-
2020
- 2020-10-30 CN CN202022474599.6U patent/CN213419704U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115263930A (en) * | 2022-09-22 | 2022-11-01 | 江苏华频电子科技有限公司 | Efficient cooling bearing for deep well pump |
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