Thrust bearing oil pumping system for vertical pump

Abstract

The utility model discloses a thrust bearing oil pumping system for a vertical pump, which is characterized in that an oil pumping system consisting of an oil inlet chamber, a first oil pumping channel, a second oil pumping channel and a third oil pumping channel is arranged at an upper bearing in a bearing body; an oil leakage prevention system composed of an oil pressing thread and an oil throwing hole is installed in the bearing body and located on the upper side of the oil inlet chamber, when the bearing body rotates, oil in the oil cavity can be thrown into the first oil pumping channel under the action of centrifugal force, the first oil pumping channel acts under the action of the centrifugal force, pressure is generated on the oil, the oil is pushed to enter the second oil pumping channel, and oil leakage is prevented. The redundant oil flows out through the overflow channel and returns to the oil cavity, the upper bearing is fully lubricated, meanwhile, oil in the oil inlet chamber can be prevented from rising under the action of the oil pressing threads, oil can be thrown back to the oil cavity in cooperation with the oil throwing hole, oil leakage in the oil cavity is avoided, the on-site overhaul frequency is reduced, and the service life of the oil pump is prolonged. The maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vertical pump technology, and specifically to a thrust bearing pumping oil system for a vertical pump. Background Technology

[0002] Vertical pump thrust bearings are typically configured with a lower thrust bearing and an upper radial bearing, lubricated by an oil bath. To prevent the bearings from overheating during operation, the oil level should not completely submerge the upper and lower bearings; the oil level should generally be slightly higher than the lower thrust bearing.

[0003] Currently, the lack of a complete pump oil system and oil leakage prevention system in the operation of vertical pumps results in insufficient lubrication of the upper bearing, frequent abnormal damage to the upper bearing and oil leakage of the thrust bearing components, affecting the safety and stability of the pump set, increasing maintenance and repair costs, and hindering the normal operation of on-site equipment. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a thrust bearing oil pumping system for vertical pumps that can fully lubricate the upper bearing and prevent oil leakage in the oil chamber, in light of the current state of the technology.

[0005] This utility model is achieved through the following technical solution: This utility model proposes a vertical pump thrust bearing oil pumping system, including a bearing body, on which an oil pumping system is provided. The oil pumping system includes an oil inlet chamber, a first oil pumping channel, a second oil pumping channel, and a third oil pumping channel. The oil inlet chamber is connected to the oil cavity inside the bearing body. The first oil pumping channel is located on the upper side of the oil inlet chamber, the second oil pumping channel is located on the upper side of the first oil pumping channel, and the third oil pumping channel is located on the upper side of the second oil pumping channel. The first, second, and third oil pumping channels are all connected. An oil cylinder is installed in the middle of the bearing body. An oil leakage prevention system is installed outside the oil cylinder on the upper side of the oil inlet chamber. The oil leakage prevention system includes an oil pressure thread and an oil throwing hole. The oil pressure thread is installed on the outside of the oil cylinder, and the oil throwing hole is located on the upper side of the oil pressure thread. An overflow channel is also installed outside the bearing body on the side of the oil throwing hole. An upper bearing is installed outside the bearing body on the lower side of the overflow channel.

[0006] Furthermore, the bearing body and the oil cylinder are fitted with a clearance, the bearing body being a rotating component and the oil cylinder being a stationary component.

[0007] By adopting the above technical solution, a clearance fit is made between the bearing body and the oil cylinder, which can prevent friction between rotating and stationary parts.

[0008] Furthermore, the oil pumping system is equipped with a plug at the outlet of the first oil pumping channel.

[0009] By adopting the above technical solution, the design of the plug can prevent oil pressure leakage in the first pump oil channel.

[0010] Furthermore, the oil pressure thread is opposite to the direction of pump rotation.

[0011] By adopting the above technical solution, the oil pressure thread is made to rotate in the opposite direction to the pump rotation, which can prevent the oil in the oil inlet chamber from overflowing as the rotating parts rise.

[0012] Furthermore, the gap between the oil inlet chamber and the oil cylinder is 1.5-2 times the diameter of the first oil pumping channel, the second oil pumping channel, and the third oil pumping channel.

[0013] By adopting the above technical solution, this design can ensure sufficient lubricating oil in the upper bearing and ensure that the oil in the oil inlet chamber can smoothly enter the first oil pumping channel, the second oil pumping channel, and the third oil pumping channel.

[0014] Furthermore, the height of the oil inlet chamber is higher than that of the lower thrust bearing and also higher than the inlet of the first oil pump channel, and the angle between the first oil pump channel and the axial direction is approximately 45°.

[0015] By adopting the above technical solution, the 45° tilt angle makes it easier for the oil in the oil inlet chamber to enter the first pump oil channel under centrifugal force.

[0016] Furthermore, the third oil pump channel is higher than the upper bearing, and the oil slinger hole is higher than the third oil pump channel.

[0017] By adopting the above technical solution, it can be ensured that the oil flowing out of the third pump oil channel fully lubricates the upper bearing.

[0018] Furthermore, the top of the oil cylinder is higher than the oil throwing hole.

[0019] By adopting the above technical solution, the top of the oil cylinder is made higher than the oil throwing hole, which can prevent oil from overflowing from the top of the oil cylinder.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] To address the current issues in vertical pump operation where the lack of a proper oil pumping system and leak prevention system leads to insufficient lubrication of the upper bearing, frequent abnormal damage to the upper bearing and oil leakage from the thrust bearing components, affecting the safety and stability of the pump unit, increasing maintenance costs, and hindering the normal operation of on-site equipment, this utility model proposes an oil pumping system within the bearing housing, consisting of an oil inlet chamber, a first oil pumping channel, a second oil pumping channel, and a third oil pumping channel. Furthermore, an oil pressure thread and an oil slinger hole are provided above the oil inlet chamber within the bearing housing. The oil leakage prevention system can, under the action of centrifugal force, throw the oil in the oil inlet chamber into the first pump oil channel when the bearing body rotates. The first pump oil channel generates pressure on the oil through the work done by centrifugal force, pushing the oil into the second pump oil channel, and then out through the third pump oil channel to lubricate the upper bearing. Excess oil flows out through the overflow channel and returns to the oil chamber, repeating the cycle. At the same time, the oil pressure thread can prevent the oil in the oil inlet chamber from rising, and with the help of the oil throwing hole, the oil can be thrown back into the oil chamber to prevent oil leakage in the oil chamber, reduce the frequency of on-site maintenance, and reduce maintenance costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a thrust bearing oil pumping system for a vertical pump according to the present invention;

[0023] Figure 2 This utility model describes a thrust bearing pump oil system for a vertical pump. Figure 1 Enlarged view of point A in the middle.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. Bearing housing; 2. Oil pumping system; 3. Oil leakage prevention system; 4. Oil inlet chamber; 5. First oil pumping channel; 6. Second oil pumping channel; 7. Third oil pumping channel; 8. Oil pressure thread; 9. Oil slinger hole; 10. Upper bearing; 11. Overflow channel; 12. Plug; 13. Oil cylinder; 14. Oil chamber. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] like Figures 1-2As shown in this embodiment, a thrust bearing oil pumping system for a vertical pump includes a bearing body 1. An oil pumping system 2 is mounted on the bearing body 1. The oil pumping system 2 includes an oil inlet chamber 4, a first oil pumping channel 5, a second oil pumping channel 6, and a third oil pumping channel 7. The oil inlet chamber 4 is connected to an oil cavity 14 inside the bearing body 1. The first oil pumping channel 5 is located above the oil inlet chamber 4, the second oil pumping channel 6 is located above the first oil pumping channel 5, and the third oil pumping channel 7 is located on one side above the second oil pumping channel 6. The first oil pumping channel 5, the second oil pumping channel 6, and the third oil pumping channel 7 are all connected. An oil cylinder 13 is installed in the middle of the bearing body 1. An oil leakage prevention system 3 is installed outside the oil cylinder 13, above the oil inlet chamber 4. The oil leakage prevention system 3 includes a pressure thread 8 and an oil throwing hole 9, wherein the pressure thread 8 is installed on the outside of the oil cylinder 13. The oil slinger hole 9 is located on one side of the upper part of the oil pressure thread 8. An overflow channel 11 is also installed on the outside of the bearing body 1 on the side of the oil slinger hole 9. An upper bearing 10 is installed on the outside of the bearing body 1 on the lower side of the overflow channel 11. The oil in the oil chamber 14 enters the oil inlet chamber 4 of the bearing body 1 through the channel below the lower thrust bearing. When the bearing body 1 rotates, the oil enters the first pump oil channel 5 under the action of centrifugal force. The first pump oil channel 5 generates pressure on the oil by doing work by centrifugal force, pushing the oil into the second pump oil channel 6, and then out through the third pump oil channel 7 to lubricate the upper bearing 10. Excess oil flows out through the overflow channel 11 and returns to the oil chamber 14. In order to prevent some of the oil in the oil inlet chamber 4 from rising along the oil cylinder 13 with the rotating parts, the oil can be thrown back into the oil chamber 14 with the cooperation of the oil pressure thread 8 and the oil slinger hole 9 to avoid leakage.

[0028] like Figures 1-2 As shown, in this embodiment, the bearing body 1 and the oil cylinder 13 are fitted with a clearance fit. The bearing body 1 is a rotating component, and the oil cylinder 13 is a stationary component. The clearance fit between the bearing body 1 and the oil cylinder 13 can prevent friction between the rotating component and the stationary component. The oil pumping system 2 is provided with a plug 12 at the outlet of the first oil pumping channel 5. The design of the plug 12 can prevent the oil in the first oil pumping channel 5 from depressurizing. The oil pressure thread 8 is opposite to the pump rotation direction. The oil pressure thread 8 is opposite to the pump rotation direction, which can prevent the oil in the oil inlet chamber 4 from rising and overflowing along the rotating component.

[0029] like Figures 1-2 As shown, in this embodiment, the gap between the oil inlet chamber 4 and the oil cylinder 13 is 1.5-2 times the diameter of the first oil pumping channel 5, the second oil pumping channel 6, and the third oil pumping channel 7. This design can ensure sufficient oil volume in the upper bearing 10 and ensure that the oil in the oil inlet chamber 4 can smoothly enter the first oil pumping channel 5, the second oil pumping channel 6, and the third oil pumping channel 7. The height of the oil inlet chamber 4 is higher than that of the lower thrust bearing and also higher than the inlet of the first oil pumping channel 5. The angle between the first oil pumping channel 5 and the axial direction is about 45°. The 45° inclination angle can make it easier for the oil in the oil inlet chamber 4 to enter the first oil pumping channel 5 under centrifugal force.

[0030] like Figures 1-2 As shown, in this embodiment, the third oil pump channel 7 is higher than the upper bearing 10, and the oil slinger hole 9 is higher than the third oil pump channel 7. This ensures that the oil in the third oil pump channel 7 can smoothly lubricate the upper bearing 10 after flowing out. The top of the oil cylinder 13 is higher than the oil slinger hole 9, so that the oil cylinder 13 is higher than the oil slinger hole 9, which can prevent oil from overflowing from the top of the oil cylinder 13.

[0031] The specific implementation process of this embodiment is as follows: When lubricating the upper bearing 10, the oil in the oil chamber 14 is first introduced into the oil inlet chamber 4 of the bearing body 1 through the channel below the lower thrust bearing. Then, the bearing body 1 is rotated so that the oil enters the first oil pumping channel 5 under the action of centrifugal force. The first oil pumping channel 5 generates pressure on the oil by doing work by centrifugal force, pushing the oil into the second oil pumping channel 6, and then flowing out through the third oil pumping channel 7 to lubricate the upper bearing 10. Excess oil flows out through the overflow channel 11 and returns to the oil chamber 14. At the same time, in order to prevent some oil in the oil inlet chamber 4 from rising along the oil cylinder 13 with the rotating parts, the oil can be thrown back into the oil chamber 14 with the cooperation of the oil pressure thread 8 and the oil throwing hole 9 to avoid leakage. Due to the cooperative design of the oil pumping system 2 and the oil leakage prevention system 3, not only is the lubrication of the upper bearing 10 achieved, but oil leakage in the oil chamber 14 is also avoided, thereby effectively reducing the frequency of on-site maintenance and reducing maintenance costs.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thrust bearing oil pumping system for a vertical pump, characterized in that: The bearing includes a bearing housing (1), on which an oil pumping system (2) is provided. The oil pumping system (2) includes an oil inlet chamber (4), a first oil pumping channel (5), a second oil pumping channel (6), and a third oil pumping channel (7). The oil inlet chamber (4) is connected to an oil cavity (14) inside the bearing housing (1). The first oil pumping channel (5) is located above the oil inlet chamber (4), the second oil pumping channel (6) is located above the first oil pumping channel (5), and the third oil pumping channel (7) is located on the upper side of the second oil pumping channel (6). The first oil pumping channel (5), the second oil pumping channel (6), and the third oil pumping channel (7) are connected to an oil cavity (14) inside the bearing housing (1). All the third pump oil passages (7) are connected. An oil cylinder (13) is installed in the middle of the bearing body (1). An oil leakage prevention system (3) is installed on the upper side of the oil inlet chamber (4) outside the oil cylinder (13). The oil leakage prevention system (3) includes an oil pressure thread (8) and an oil slinger hole (9). The oil pressure thread (8) is installed on the outside of the oil cylinder (13). The oil slinger hole (9) is located on the upper side of the oil pressure thread (8). An overflow channel (11) is also installed on the side of the oil slinger hole (9) outside the bearing body (1). An upper bearing (10) is installed on the lower side of the overflow channel (11) outside the bearing body (1).

2. The thrust bearing oil pumping system for a vertical pump according to claim 1, characterized in that: The bearing body (1) and the oil cylinder (13) are fitted with a clearance, wherein the bearing body (1) is a rotating component and the oil cylinder (13) is a stationary component.

3. The thrust bearing oil pumping system for a vertical pump according to claim 1, characterized in that: The oil pumping system (2) is provided with a plug (12) at the outlet of the first oil pumping channel (5).

4. The thrust bearing oil pumping system for a vertical pump according to claim 1, characterized in that: The oil pressure thread (8) is opposite to the direction of pump rotation.

5. The thrust bearing oil pumping system for a vertical pump according to claim 1, characterized in that: The gap between the oil inlet chamber (4) and the oil cylinder (13) is 1.5-2 times the diameter of the first oil pumping channel (5), the second oil pumping channel (6), and the third oil pumping channel (7).

6. The thrust bearing oil pumping system for a vertical pump according to claim 5, characterized in that: The height of the oil inlet chamber (4) is higher than that of the lower thrust bearing and also higher than the inlet of the first oil pump channel (5). The first oil pump channel (5) has an angle of approximately 45° with the axial direction.

7. A thrust bearing oil pumping system for a vertical pump according to claim 6, characterized in that: The third oil pump channel (7) is higher than the upper bearing (10), and the oil slinger hole (9) is higher than the third oil pump channel (7).

8. A thrust bearing oil pumping system for a vertical pump according to claim 7, characterized in that: The top of the oil cylinder (13) is higher than the oil throwing hole (9).

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