CN114320995B - Bearing lubricating structure and barrel bag pump with same - Google Patents
Bearing lubricating structure and barrel bag pump with same Download PDFInfo
- Publication number
- CN114320995B CN114320995B CN202210115054.7A CN202210115054A CN114320995B CN 114320995 B CN114320995 B CN 114320995B CN 202210115054 A CN202210115054 A CN 202210115054A CN 114320995 B CN114320995 B CN 114320995B
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- oil
- bearing
- oil tank
- sleeve
- main shaft
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- 230000001050 lubricating effect Effects 0.000 title abstract description 9
- 239000003921 oil Substances 0.000 claims abstract description 182
- 239000010687 lubricating oil Substances 0.000 claims abstract description 51
- 238000005461 lubrication Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 22
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 abstract description 20
- 230000009471 action Effects 0.000 description 10
- 125000006850 spacer group Chemical group 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Classifications
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- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The application relates to a bearing lubricating structure and a barrel pump with the same. The bearing lubrication structure is used for a cylinder bag pump and comprises an oil tank, a main shaft and a bearing assembly, wherein the main shaft penetrates through the oil tank; the bearing assembly comprises a shaft sleeve and a duplex bearing, the shaft sleeve is positioned in the oil tank and fixedly arranged on the main shaft, the inner ring of the duplex bearing is fixedly arranged on the shaft sleeve, and the outer ring of the duplex bearing is relatively fixed with the oil tank so as to divide the interior of the oil tank into an upper space and a lower space; the bottom end of the shaft sleeve is positioned in the lower space so as to pull lubricating oil upwards when rotating; the oil tank is also provided with an oil return passage which is communicated with the upper space and the lower space; through set up the axle sleeve between main shaft and duplex bearing, and set up the bottom of axle sleeve below duplex bearing for can upwards pull lubricating oil through the axle sleeve, and the oil volume of upwards carrying is more controllable, thereby can reduce as far as possible under the prerequisite that satisfies duplex bearing lubrication demand with the oil volume of upwards carrying, in order to avoid leading to leaking because of a large amount of oil scour gland.
Description
Technical Field
The application relates to the technical field related to water pumps, in particular to a bearing lubrication structure and a barrel bag pump with the same.
Background
In order to avoid causing additional axial force and limit the shaft within the axial clearance range in two directions, most of the existing barrel bag pumps and other water pump shafts adopt paired double-mounted angular contact ball bearings; considering the lubrication requirement of the bearing, the duplex bearing is arranged in an oil tank filled with lubricating oil;
in addition, in order to ensure that the upper row of balls and the lower row of balls of the duplex bearing can be lubricated, the liquid level of the lubricating oil is usually positioned at the central position of the lower row of balls in a static state, so that after the main shaft starts to rotate, the liquid level of the lubricating oil is pulled upwards to the central position of the upper row of balls under the rotation action of the lower row of balls, and the duplex bearing is lubricated simultaneously;
however, the liquid level of the lubricating oil is higher in the working state and is close to the position of the gland of the oil tank, and a large amount of oil thrown out by the upper row of balls washes the gland or stays in the gland, so that the lubricating oil is easy to leak from the gland.
Disclosure of Invention
Based on this, it is necessary to provide a bearing lubrication structure capable of ensuring that the duplex bearing is sufficiently lubricated and the oil level is low and is not easy to leak, and a barrel pump with the bearing lubrication structure, aiming at the problem that the oil level in the bearing oil tank is high, which causes that lubricating oil is easy to leak from a gland in the prior art.
The application provides a bearing lubrication structure which is used for a barrel pump and comprises an oil tank, a main shaft and a bearing assembly, wherein the main shaft penetrates through the oil tank; the bearing assembly comprises a shaft sleeve and a duplex bearing, the shaft sleeve is positioned in the oil tank and fixedly arranged on the main shaft, an inner ring of the duplex bearing is fixedly arranged on the shaft sleeve, and an outer ring of the duplex bearing is relatively fixed with the oil tank so as to divide the interior of the oil tank into an upper space and a lower space; the bottom end of the shaft sleeve is positioned in the lower space so as to pull lubricating oil upwards when rotating; the oil tank is also provided with an oil return passage which is communicated with the upper space and the lower space.
Above-mentioned bearing lubricating structure through set up the axle sleeve between main shaft and duplex bearing, and set up the bottom of axle sleeve below duplex bearing for can upwards draw lubricating oil through the axle sleeve, and the oil volume of upwards carrying is more controllable, thereby can reduce as far as possible under the prerequisite that satisfies duplex bearing lubrication demand with the oil volume of upwards carrying, in order to avoid leading to leaking because of a large amount of oil scour gland, or because of the condition emergence that the oil detained and lead to leaking.
In one embodiment, the bottom end of the sleeve has a chamfer that slopes from bottom to top away from the spindle.
It can be understood that the lubricating oil can be thrown out to the lower row balls of the duplex bearing along the chamfer under the action of centrifugal force, so that the lubricating requirement is met, and meanwhile, the oil liquid amount transported upwards in the working state is reduced, and the effect of avoiding lubricating oil leakage is achieved.
In one embodiment, the chamfer is inclined toward the lower row of balls of the duplex bearing.
It can be understood that a larger proportion of the oil thrown out through the shaft sleeve can be directly thrown to the lower row of balls and is conveyed upwards through the lower row of balls, so that the conveying efficiency of the lubricating oil is improved.
In one embodiment, the outer edge surface of the shaft sleeve is provided with a plurality of oil suction grooves, the upper ends of the oil suction grooves are communicated with the upper space, and the lower ends of the oil suction grooves are communicated with the lower space.
It can be understood that after the shaft sleeve starts to rotate, oil can be upwards conveyed to the upper space along the oil suction groove, and the oil quantity conveyed upwards is easy to adjust, so that the oil quantity conveyed upwards can be reduced while the lubricating requirement is met, and the effect of avoiding lubricating oil leakage is achieved.
In one embodiment, the outer edge surface of the shaft sleeve is centered on the central axis of the main shaft, and two oil suction grooves are symmetrically formed.
In one embodiment, the oil absorption groove is in a spiral shape.
It is understood that the device can be applied to the situation that the traction force generated when the shaft sleeve rotates is insufficient to vertically and upwards convey the oil along the oil suction groove due to the fact that the rotation speed of the main shaft is relatively low or the interval between the upper space and the lower space is too large.
In one embodiment, the shaft sleeve is circumferentially penetrated and provided with a plurality of oil return holes which incline from bottom to top to be far away from the main shaft, and the oil return holes are communicated with the oil suction grooves.
It is understood that the lubricating oil between the sleeve and the main shaft can return to the oil suction groove along the oil return hole under the action of centrifugal force.
In one embodiment, the bottom end of the oil tank is further provided with a sealing blocking sleeve, and the outer side of the sealing blocking sleeve is fixedly connected with the oil tank.
It can be understood that the sealing retaining sleeve can prevent lubricating oil in the oil tank from leaking from the position penetrating through the oil tank along the main shaft, so that the possibility of oil leakage is reduced.
In one embodiment, a part of the sealing stop sleeve is located between the main shaft and the shaft sleeve, and the top end of the sealing stop sleeve corresponds to the inner opening of the oil return hole.
It can be understood that the oil between the sealing retaining sleeve and the main shaft can be mostly conveyed upwards under the rotation action of the main shaft and is thrown back to the oil suction groove through the oil return hole, so that the effect of increasing the sealing effect of the sealing retaining sleeve is achieved, and the possibility of oil leakage is further reduced.
A second aspect of the application provides a cartridge pump comprising a bearing lubrication arrangement as described above.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic cross-sectional view in elevation of a portion of a bearing housing of a bag pump in accordance with one embodiment of the application;
FIG. 2 is an enlarged schematic view of the structure shown at A in FIG. 1;
FIG. 3 is an enlarged schematic view of the bushing of FIG. 2;
FIG. 4 is a schematic cross-sectional view of a bearing lubrication structure according to another embodiment of the present application;
FIG. 5 is a schematic top view of FIG. 3;
FIG. 6 is a schematic cross-sectional view in elevation of a sleeve according to another embodiment of the present application;
reference numerals: 10. an oil tank; 110. a case; 120. a bearing housing; 130. a gland; 11. an upper space; 12. a lower space; 13. an oil return passage; 14. sealing the retaining sleeve; 15. an auxiliary oil return passage; 20. a main shaft; 30. a bearing assembly; 31. a shaft sleeve; 311. an oil suction groove; 312. an oil return hole; 32. a duplex bearing; 321. an inner spacer; 322. an outer spacer.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present application for the purpose of illustration only and do not represent the only embodiment.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.
Unless defined otherwise, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in the description of the present application includes any and all combinations of one or more of the associated listed items.
In the prior art, because the running power of the water pump needs to be ensured, the rotating speed of the main shaft of the water pump is higher and can not be adjusted at will, the high-speed rotating main shaft can drive the balls of the duplex bearing to rotate at high speed, and because the lower row balls of the duplex bearing are immersed in oil, a large amount of lubricating oil can be upwards conveyed by the upward traction force generated by the lower row balls rotating at high speed, so that the amount of the lubricating oil conveyed to the upper side of the duplex bearing through the upper row balls is larger, and under the scouring of a large amount of oil, the oil leakage is very easy to occur at the gland of the oil tank;
in addition, because the oil volume is great, if the oil return speed is less, then oil is detained in oil tank gland department equally easily, and then leads to the oil to leak, if increase the pipe diameter of oil return pipeline, though can increase the oil return speed and avoid the condition emergence that the oil detained, but will increase the whole volume of device, be unfavorable for the design of the less volume water pump of part.
Referring to fig. 1 to 2, the present application firstly provides a bearing lubrication structure for a barrel pump, which comprises an oil tank 10, a main shaft 20 and a bearing assembly 30, wherein the main shaft 20 penetrates through the oil tank 10; the bearing assembly 30 comprises a shaft sleeve 31 and a duplex bearing 32, the shaft sleeve 31 is positioned in the oil tank 10 and fixedly arranged on the main shaft 20, the inner ring of the duplex bearing 32 is fixedly arranged on the shaft sleeve 31, and the outer ring is relatively fixed with the oil tank 10 so as to divide the interior of the oil tank 10 into an upper space 11 and a lower space 12; the bottom end of the sleeve 31 is located in the lower space 12 to pull the lubricating oil upward when rotating; the oil tank 10 is also provided with an oil return passage 13 that communicates the upper space 11 with the lower space 12.
After the spindle 20 starts to rotate, the shaft sleeve 31 is driven to rotate together, so that the lubricating oil can be pulled upwards through the high-speed rotation of the shaft sleeve 31, therefore, the lubricating oil level in the oil tank 10 only needs to be located between the bottom end of the shaft sleeve 31 and the duplex bearing 32, namely, the bottom end of the shaft sleeve 31 is located below the lubricating oil level, and the duplex bearing 32 is located above the lubricating oil level, so that the oil level in a static state is lowered.
The shaft sleeve 31 pulls the lubricating oil upward, which may be to pull the lubricating oil in the lower space 12 to the upper space 11 directly, or to throw the lubricating oil in the lower space 12 to the lower row balls of the duplex bearing 32, and further convey the oil upward by the upward traction force generated when the lower row balls rotate; the present application is not particularly limited herein, and the lubrication requirement of the duplex bearing 32 is satisfied as long as the lubrication oil in the lower space 12 can be eventually pulled upward to the upper space 11 by the rotation of the sleeve 31.
When the lubricating oil is drawn to the upper space 11, the lubricating oil can flow back to the lower space 12 along the oil return passage 13, so that the lubricating oil is prevented from being retained in the upper space 11, and oil leakage occurs at the oil tank gland.
Because the liquid level of the lubricating oil in the oil tank 10 is positioned between the bottom end of the shaft sleeve 31 and the duplex bearing 32, and the balls in the lower row of the duplex bearing 32 are not directly immersed in the oil, the amount of the oil transported upwards after the water pump starts to work is controllable, for example:
under the condition that the shaft sleeve 31 directly pulls the lubricating oil in the lower space 12 to the upper space 11, the shape and the size of the bottom end of the shaft sleeve 31 and the pipe diameter of a traction oil path of the shaft sleeve 31 can be designed to regulate the quantity of the oil which is conveyed to the upper space;
in the case that the shaft sleeve 31 throws the lubricating oil in the lower space 12 to the balls in the lower row of the duplex bearing 32, the amount of the lubricating oil thrown to the balls in the lower row during rotation can be adjusted by designing the shape and the size of the bottom end of the shaft sleeve 31, and the amount of the lubricating oil which is delivered upwards by the whole bearing assembly 30 is adjusted.
Therefore, in the application, the amount of oil conveyed upwards through the bearing assembly 30 is relatively small on the premise of meeting the lubrication requirement of the duplex bearing 32, and leakage caused by a large amount of flushing oil tank gland is avoided; in addition, since the amount of oil is small, the lubricating oil delivered to the upper space 11 can immediately flow back to the lower space 12 through the oil return passage 13 and is always in a circulating state, and leakage due to stagnation at the oil tank gland is avoided.
In the embodiment shown in fig. 2, the oil tank 10 includes a tank body 110, a bearing housing 120 and a gland 130, wherein the bearing housing 120 is located between the tank body 110 and the gland 130, and flange portions of the bearing housing 120 are fixedly connected with the tank body 110 and the gland 130, respectively, an outer ring of the duplex bearing 32 is fixed with the bearing housing 120, so that the outer ring of the duplex bearing 32 is relatively fixed with the oil tank 10, and the duplex bearing 32 cooperates with the bearing housing 120 to divide an inner space formed by the tank body 110 and the gland 130 into an upper space 11 and a lower space 12;
the bottom end of the bearing housing 120 is provided with a through hole so that lubricating oil can enter the bearing housing 120 through the through hole and lubricate the duplex bearing 32; the top end of the duplex bearing 32 is located below the contact surface of the gland 130 and the bearing housing 120 to ensure that the highest point of the circulating oil is lower than the contact surface of the gland 130 and the bearing housing 120, thereby further reducing the possibility of leakage of lubricating oil.
In the embodiment shown in fig. 2, the bottom end of the sleeve 31 has a chamfer that slopes from bottom to top away from the spindle 20; so that after the spindle 20 drives the shaft sleeve 31 to start rotating, lubricating oil can be thrown out to the lower row of balls of the duplex bearing 32 along the chamfer angle under the action of centrifugal force and is pulled and conveyed to the upper space 11 through the duplex bearing 32, thereby completing the lubrication of the duplex bearing 32;
so that the upward delivery of oil can be achieved also in the event of a reduced initial oil level; and the process of throwing out the lubricating oil liquid from the chamfer is used as an intermediary, so that the lubricating requirement is met, and meanwhile, the quantity of the lubricating oil liquid transported upwards in the working state is reduced, and the effect of avoiding lubricating oil leakage is achieved.
Of course, the bottom end of the sleeve 31 may be other conventional guiding structures, such as an inclined guiding hole, so long as the lubricating oil can be conveyed in a specified direction during rotation.
In the above embodiment, the inclined direction of the chamfer is directed toward the lower row balls of the duplex bearing 32, so that a larger proportion of the oil thrown out via the sleeve 31 can be thrown directly to the lower row balls and conveyed upward via the lower row balls, to increase the conveying efficiency of the lubricating oil.
In the embodiment shown in fig. 2 and 3, the outer edge surface of the sleeve 31 is provided with a plurality of oil suction grooves 311, the upper end of the oil suction groove 311 is communicated with the upper space 11, and the lower end is communicated with the lower space 12; after the spindle 20 drives the shaft sleeve 31 to start rotating, the oil can be conveyed upwards to the upper space 11 along the oil suction groove 311 under the upward traction force generated by the rotation of the shaft sleeve 31;
after being conveyed to the upper space 11, the lubricating oil can flow back to the lower space 12 along the paths of the upper row of balls and the lower row of balls under the action of self weight, the duplex bearing 32 is lubricated, and the redundant lubricating oil in the upper space 11 can flow back to the lower space 12 through the oil return passage 13.
In the above embodiment, the upward conveying of the lubricating oil is realized by the rotation of the shaft sleeve 31, so that the upward conveying is relatively controllable, and specifically, the shape and the size of the bottom end of the shaft sleeve 31 and the pipe diameter of the traction oil path of the shaft sleeve 31 can be designed to regulate the amount of the oil to be conveyed upward, so that the lubricating requirement can be met, and the amount of the oil to be conveyed upward can be reduced, so that the effect of avoiding the leakage of the lubricating oil can be achieved.
In the embodiment shown in fig. 4, an inner spacer ring 321 and an outer spacer ring 322 are fixedly arranged between the upper and lower sets of bearings of the duplex bearing 32, the inner spacer ring 321 and the outer spacer ring 322 are respectively provided with a plurality of through holes in a penetrating manner along the radial direction, the top end of the oil suction groove 311 corresponds to the through hole of the inner spacer ring 321, and the oil tank 10 is also provided with an auxiliary oil return passage 15 which is communicated with the upper space 11 and the through hole of the outer spacer ring 322.
Part of the oil in the upper space 11 can flow back between the upper and lower sets of bearings through the auxiliary oil return passage 15 and the through holes of the outer spacer ring 322, and the oil in the oil suction groove 311 can flow back between the upper and lower sets of bearings through the through holes of the inner spacer ring 321;
if the amount of oil in the upper space 11 is smaller at this time, that is, the amount of oil conveyed upwards in the oil circuit circulation is smaller at this time, and the pressure of the oil in the upper space 11 on the upper row balls is smaller at this time, the influence on the rotation of the upper row balls to pull the oil upwards is smaller or even not, so that the oil between the two groups of bearings is pulled by the upper row balls to be conveyed upwards, the amount of the oil conveyed upwards is increased, and the amount of the oil in the circulation is increased;
the amount of oil in the upper space 11 is larger at this time, namely, the amount of oil conveyed upwards in the oil circuit circulation is larger at this time, and the pressure of the oil in the upper space 11 on the upper row of balls is larger at this time, so that the influence on the upward traction of the oil by the upper row of balls is larger, the oil between the two groups of bearings is more difficult to further transport upwards, and can flow back downwards along the lower row of balls under the action of self gravity, so that the upward transportation of the oil by the lower row of balls is blocked, the upward transportation of the oil is reduced, and the oil amount in the circulation is reduced;
therefore, by introducing the oil between the two groups of bearings, the part of the oil can adaptively change the flow direction according to the oil quantity in the upper space 11, so that the dynamic balance of the oil quantity in the circulation is realized, and the abnormal operation caused by the excessive or insufficient oil quantity in the circulation is avoided.
In the embodiment shown in fig. 5, the outer edge surface of the shaft sleeve 31 is centered on the central axis of the main shaft 20, and two oil absorption grooves 311 are symmetrically formed; in this case, the amount of oil transported upward through the oil suction groove 311 can just meet the lubrication requirement of the balls in the upper and lower rows of the duplex bearing 32, and the oil can form a smooth circulation, and cannot be retained at the contact surface of the gland 130 and the bearing housing 120, so as to achieve the effect of avoiding the leakage of the lubricating oil.
In the embodiment shown in fig. 6, the oil suction groove 311 has a spiral shape; the oil in the oil suction groove 311 can be smoothly conveyed upwards under the action of the traction force generated by the rotation of the shaft sleeve 31, and the device can be suitable for the situation that the traction force generated by the rotation of the shaft sleeve 31 is insufficient to vertically convey the oil upwards along the oil suction groove 311 due to the fact that the rotation speed of the main shaft 20 is relatively low or the interval between the upper space 11 and the lower space 12 is too large.
In the embodiment shown in fig. 2 and 3, the sleeve 31 is circumferentially perforated with a plurality of oil return holes 312 inclined from bottom to top in a direction away from the main shaft 20, and the oil return holes 312 are communicated with the oil suction grooves 311; so that the lubricating oil between the sleeve 31 and the main shaft 20 can return to the oil suction groove 311 along the oil return hole 312 by centrifugal force.
In the embodiment shown in fig. 2, the bottom end of the oil tank 10 is further provided with a sealing stop sleeve 14, and the outer side of the sealing stop sleeve 14 is fixedly connected with the oil tank 10; the sealing baffle sleeve 14 is used for avoiding the leakage of lubricating oil in the oil tank 10 along the main shaft 20 from the position penetrating the oil tank 10 by the labyrinth sealing principle, so that the possibility of oil leakage is reduced.
In the embodiment shown in fig. 2, a part of the sealing collar 14 is located between the main shaft 20 and the shaft sleeve 31, and the top end of the sealing collar 14 corresponds to the inner opening of the oil return hole 312; so that most of the oil between the sealing baffle sleeve 14 and the main shaft 20 can be conveyed upwards under the rotation action of the main shaft 20 and is thrown back to the oil suction groove 311 through the oil return hole 312, and the small part of the residual oil can be prevented from leaking from the lower side by virtue of the sealing action of the sealing baffle sleeve 14, so that the effect of increasing the sealing effect of the sealing baffle sleeve 14 is achieved, and the possibility of oil leakage is further reduced.
The application also provides a cylinder bag pump. The cylinder bag pump comprises the bearing lubricating structure.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be determined from the following claims.
Claims (6)
1. Bearing lubrication structure for a cartridge pump, characterized by comprising an oil tank (10), a main shaft (20) and a bearing assembly (30), the main shaft (20) penetrating the oil tank (10);
the bearing assembly (30) comprises a shaft sleeve (31) and a duplex bearing (32), the shaft sleeve (31) is positioned in the oil tank (10) and fixedly arranged on the main shaft (20), an inner ring of the duplex bearing (32) is fixedly arranged on the shaft sleeve (31), and an outer ring of the duplex bearing is relatively fixed with the oil tank (10) so as to divide the interior of the oil tank (10) into an upper space (11) and a lower space (12);
the bottom end of the shaft sleeve (31) is positioned in the lower space (12) so as to pull lubricating oil upwards when rotating;
the oil tank (10) is also provided with an oil return passage (13) which is communicated with the upper space (11) and the lower space (12);
an inner space ring (321) and an outer space ring (322) are fixedly arranged between an upper group of bearing and a lower group of bearing of the duplex bearing (32), the inner space ring (321) and the outer space ring (322) are respectively provided with a plurality of through holes in a penetrating way along the radial direction, the outer edge surface of the shaft sleeve (31) is provided with a plurality of oil suction grooves (311), the top ends of the oil suction grooves (311) correspond to the through holes of the inner space ring (321), and the oil tank (10) is also provided with an auxiliary oil return passage (15) which is communicated with the upper space (11) and the through holes of the outer space ring (322); the bottom end of the shaft sleeve (31) is provided with a chamfer angle which is inclined from bottom to top in a direction away from the main shaft (20); the inclined direction of the chamfer faces to the lower row of balls of the duplex bearing (32);
the shaft sleeve (31) is circumferentially penetrated and provided with a plurality of oil return holes (312) which incline from bottom to top to be far away from the main shaft (20), and the oil return holes (312) are communicated with the oil suction grooves (311).
2. Bearing lubrication structure according to claim 1, characterized in that the outer edge surface of the sleeve (31) is symmetrically provided with two oil suction grooves (311) with the central axis of the main shaft (20) as the center.
3. Bearing lubrication according to claim 1, wherein the oil absorption groove (311) is spiral.
4. Bearing lubrication structure according to claim 1, characterized in that the bottom end of the oil tank (10) is further provided with a sealing stop sleeve (14), and the outer side of the sealing stop sleeve (14) is fixedly connected with the oil tank (10).
5. The bearing lubrication structure according to claim 4, characterized in that a part of the seal retainer (14) is located between the main shaft (20) and the sleeve (31), and a tip of the seal retainer (14) corresponds to an inner opening of the oil return hole (312).
6. A cartridge pump comprising a bearing lubrication structure according to any one of claims 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115054.7A CN114320995B (en) | 2022-01-28 | 2022-01-28 | Bearing lubricating structure and barrel bag pump with same |
| PCT/CN2022/076782 WO2023142189A1 (en) | 2022-01-28 | 2022-02-18 | Bearing lubricating structure and barrel pump having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115054.7A CN114320995B (en) | 2022-01-28 | 2022-01-28 | Bearing lubricating structure and barrel bag pump with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114320995A CN114320995A (en) | 2022-04-12 |
| CN114320995B true CN114320995B (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210115054.7A Active CN114320995B (en) | 2022-01-28 | 2022-01-28 | Bearing lubricating structure and barrel bag pump with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114320995B (en) |
| WO (1) | WO2023142189A1 (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386687Y (en) * | 2009-03-03 | 2010-01-20 | 上海伟尔泵业有限公司 | Rolling bearing cooling and lubricating device for high-power vertical centrifugal pump |
| CN102032268A (en) * | 2011-01-01 | 2011-04-27 | 常熟长城轴承有限公司 | Bearing with adjustable shaft distance |
| CN103730976A (en) * | 2013-11-30 | 2014-04-16 | 南阳防爆集团股份有限公司 | Thin oil lubrication bearing device of motor for coal mine main ventilator |
| CN103758859A (en) * | 2014-01-06 | 2014-04-30 | 杭州华星轴承有限公司 | Precise-installed rolling combination bearing |
| CN204553317U (en) * | 2015-01-30 | 2015-08-12 | 昆明嘉和科技股份有限公司 | A kind of vertical type multilevel barrel bag pump |
| CN106438725A (en) * | 2016-08-31 | 2017-02-22 | 合肥华升泵阀股份有限公司 | Self-sucking type bearing lubricating device |
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| CN210106432U (en) * | 2019-04-30 | 2020-02-21 | 洛阳高测精密机械有限公司 | Lubricating and oil discharging device for high-speed mechanical main shaft |
| CN111120389A (en) * | 2019-12-30 | 2020-05-08 | 西安航天泵业有限公司 | Self-circulation thin oil lubricating bearing body of vertical pump |
| CN212055241U (en) * | 2019-12-25 | 2020-12-01 | 江苏长凯机械设备有限公司 | Bearing circulating lubrication device of vertical pump |
| CN213776322U (en) * | 2020-12-07 | 2021-07-23 | 南京安维士传动技术股份有限公司 | Auxiliary lubrication structure for planet wheel bearing in wind power gearbox |
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| GB2051971B (en) * | 1979-06-26 | 1983-04-20 | Skf Uk Ltd | Lubricating bearings |
| JP2002295493A (en) * | 2001-03-29 | 2002-10-09 | Mitsuboshi Belting Ltd | Bearing sealing structure |
| CN105526261B (en) * | 2016-01-28 | 2018-02-13 | 陈岩 | Turbine and the duplex bearing circulating oil lubrication system under axle centrifugation collective effect |
| CN110259952B (en) * | 2019-07-18 | 2024-02-02 | 福建省闽旋科技股份有限公司 | Rotary dynamic sealing device of centrifugal machine |
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2022
- 2022-01-28 CN CN202210115054.7A patent/CN114320995B/en active Active
- 2022-02-18 WO PCT/CN2022/076782 patent/WO2023142189A1/en unknown
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386687Y (en) * | 2009-03-03 | 2010-01-20 | 上海伟尔泵业有限公司 | Rolling bearing cooling and lubricating device for high-power vertical centrifugal pump |
| CN102032268A (en) * | 2011-01-01 | 2011-04-27 | 常熟长城轴承有限公司 | Bearing with adjustable shaft distance |
| CN103730976A (en) * | 2013-11-30 | 2014-04-16 | 南阳防爆集团股份有限公司 | Thin oil lubrication bearing device of motor for coal mine main ventilator |
| CN103758859A (en) * | 2014-01-06 | 2014-04-30 | 杭州华星轴承有限公司 | Precise-installed rolling combination bearing |
| CN204553317U (en) * | 2015-01-30 | 2015-08-12 | 昆明嘉和科技股份有限公司 | A kind of vertical type multilevel barrel bag pump |
| CN106438725A (en) * | 2016-08-31 | 2017-02-22 | 合肥华升泵阀股份有限公司 | Self-sucking type bearing lubricating device |
| CN206571727U (en) * | 2017-03-13 | 2017-10-20 | 沈阳凯泉石化泵有限公司 | A kind of oiling lubricating apparatus of vertical type multilevel barrel bag pump |
| CN210106432U (en) * | 2019-04-30 | 2020-02-21 | 洛阳高测精密机械有限公司 | Lubricating and oil discharging device for high-speed mechanical main shaft |
| CN212055241U (en) * | 2019-12-25 | 2020-12-01 | 江苏长凯机械设备有限公司 | Bearing circulating lubrication device of vertical pump |
| CN111120389A (en) * | 2019-12-30 | 2020-05-08 | 西安航天泵业有限公司 | Self-circulation thin oil lubricating bearing body of vertical pump |
| CN213776322U (en) * | 2020-12-07 | 2021-07-23 | 南京安维士传动技术股份有限公司 | Auxiliary lubrication structure for planet wheel bearing in wind power gearbox |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114320995A (en) | 2022-04-12 |
| WO2023142189A1 (en) | 2023-08-03 |
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