CN114320995A - Bearing lubricating structure and barrel pump with same - Google Patents
Bearing lubricating structure and barrel pump with same Download PDFInfo
- Publication number
- CN114320995A CN114320995A CN202210115054.7A CN202210115054A CN114320995A CN 114320995 A CN114320995 A CN 114320995A CN 202210115054 A CN202210115054 A CN 202210115054A CN 114320995 A CN114320995 A CN 114320995A
- Authority
- CN
- China
- Prior art keywords
- oil
- bearing
- oil tank
- main shaft
- shaft sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001050 lubricating effect Effects 0.000 title abstract description 14
- 239000003921 oil Substances 0.000 claims abstract description 163
- 239000010687 lubricating oil Substances 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims description 19
- 238000005461 lubrication Methods 0.000 claims description 17
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 2
- 239000012530 fluid Substances 0.000 abstract description 20
- 210000004907 gland Anatomy 0.000 abstract description 19
- 230000000694 effects Effects 0.000 description 8
- 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 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005406 washing Methods 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
- 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 invention relates to a bearing lubricating structure and a cylinder belt pump with the same. The bearing lubricating structure 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, 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 draw the lubricating oil upwards during rotation; the oil tank is also provided with an oil return passage for communicating the upper space with the lower space; through set up the axle sleeve between main shaft and duplex bearing, and set up the bottom of axle sleeve below the duplex bearing for can upwards pull lubricating oil through the axle sleeve, and the fluid volume of upwards carrying is comparatively controllable, thereby can reduce the fluid volume of upwards carrying as far as possible under the prerequisite that satisfies the lubricated demand of duplex bearing, with avoid leading to the leakage because of a large amount of fluid erode the gland.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to a bearing lubricating structure and a barrel bag pump with the bearing lubricating structure.
Background
In order to avoid additional axial force and limit the shaft in the axial clearance range in two directions, the conventional barrel bag pump and other water pump shafts mostly adopt angular contact ball bearings which are installed in a pair-to-pair manner; in consideration of the lubricating requirement of the bearing, the duplex bearing is mostly 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 upwards drawn to the central position of the upper row of balls under the rotation action of the lower row of balls, and the simultaneous lubrication of the duplex bearing is realized;
however, the height of the liquid level of the lubricating oil is high in the working state, the lubricating oil is close to the position of the oil tank gland, and a large amount of oil thrown out by the upper-discharging balls scours the gland or is retained in the gland, so that the lubricating oil is easy to leak at the gland.
Disclosure of Invention
Therefore, in order to solve the problem that lubricating oil is easy to leak from a gland due to high oil level in a bearing oil tank in the prior art, a bearing lubricating structure and a barrel pump with the bearing lubricating structure are needed, wherein the bearing lubricating structure can ensure that a duplex bearing is sufficiently lubricated, the oil level is low, and the leakage is difficult.
The invention firstly provides a bearing lubricating structure for a barrel pump, which 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 is 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 draw the lubricating oil upwards during rotation; the oil tank is further provided with an oil return passage which communicates the upper space with the lower space.
Above-mentioned bearing lubrication structure, through set up the axle sleeve between main shaft and duplex bearing, and set up the bottom of axle sleeve below the duplex bearing for can upwards pull lubricating oil through the axle sleeve, and the fluid volume of upwards carrying is comparatively controllable, thereby can reduce the fluid volume of upwards carrying as far as possible under the prerequisite that satisfies the lubricated demand of duplex bearing, with avoid leading to the leakage because of a large amount of fluid erodees the gland, or because of the fluid is detained and is leaded to the condition emergence of leakage.
In one embodiment, the bottom end of the shaft sleeve is provided with a chamfer inclined from bottom to top in a direction away from the main shaft.
It can be understood that lubricating oil can throw away the ball down to duplex bearing along the chamfer under the centrifugal force effect to when satisfying lubricated demand, the oil liquid volume of upwards transporting under the operating condition has been reduced, thereby has reached the effect of avoiding lubricating oil to leak.
In one embodiment, the chamfer is inclined toward the lower row of balls of the duplex bearing.
It can be understood that the oil thrown out through the shaft sleeve can be directly thrown to the lower row of balls in a larger proportion, and is upwards conveyed 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, the axle sleeve begins to rotate the back, can upwards carry fluid to the headroom along the oil absorption groove, and the fluid volume of upwards transporting easily adjusts to can reduce the fluid volume of upwards transporting when satisfying lubricated demand, in order to reach the effect of avoiding lubricating oil to leak.
In one embodiment, the outer edge surface of the shaft sleeve is provided with two oil suction grooves symmetrically around the central axis of the main shaft.
In one embodiment, the oil suction groove is in a spiral shape.
It can be understood that the oil suction device can be applied to the situation that the traction force generated by the rotation of the shaft sleeve is not enough to convey the oil vertically upwards along the oil suction groove due to the relatively low rotation speed of the main shaft or the overlarge space between the upper space and the lower space.
In one embodiment, the shaft sleeve is circumferentially provided with a plurality of oil return holes which are inclined from bottom to top in the direction away from the main shaft, and the oil return holes are communicated with the oil suction groove.
It can be understood that the lubricating oil between the shaft 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 baffle sleeve, and the outer side of the sealing baffle sleeve is fixedly connected with the oil tank.
It can be understood that the sealing baffle sleeve can prevent lubricating oil in the oil tank from leaking from the part penetrating the oil tank along the main shaft, and further reduce the possibility of oil leakage.
In one embodiment, a part of the sealing blocking sleeve is positioned between the main shaft and the shaft sleeve, and the top end of the sealing blocking sleeve corresponds to an inner side opening of the oil return hole.
It can be understood that most of the oil between the sealing baffle sleeve and the main shaft can be conveyed upwards and thrown back to the oil suction groove through the oil return hole under the rotating action of the main shaft, so that the sealing effect of the sealing baffle sleeve is increased, and the possibility of oil leakage is further reduced.
The second aspect of the present invention provides a cartridge pump comprising the above-described bearing lubrication structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view, in cross-section, schematic structural view of a pouch pump bracket portion in accordance with one embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is an enlarged schematic view of the bushing of FIG. 2;
FIG. 4 is a front view, sectional structural view of a bearing lubrication structure according to another embodiment of the present invention;
FIG. 5 is a schematic top view of the structure of FIG. 3;
FIG. 6 is a front view, cross-sectional structural view of a bushing in accordance with another embodiment of the present invention;
reference numerals: 10. an oil tank; 110. a box body; 120. a bearing housing; 130. a gland; 11. an upper space; 12. a lower space; 13. an oil return passage; 14. sealing the blocking 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 ring; 322. an outer space ring.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "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 as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean 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 via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Unless defined otherwise, all technical and scientific terms used herein 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 present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the prior art, because the operating power of a water pump needs to be ensured, the rotating speed of a main shaft of the water pump is high and cannot be adjusted at will, the main shaft rotating at high speed can drive balls of a duplex bearing to rotate at high speed, and because the lower row of balls of the duplex bearing are immersed in oil, an upward traction force generated by the lower row of balls rotating at high speed can convey a large amount of lubricating oil upwards, so that the amount of the oil conveyed to the upper side of the duplex bearing by the upper row of balls is also large, and oil leakage is easy to occur at a gland of an oil tank under the flushing of a large amount of oil;
in addition because fluid volume is great, if the oil return speed is less, then fluid is detained in oil tank gland department equally easily, and then leads to fluid to leak, if the pipe diameter of increase oil return line, though can increase the condition that oil return speed avoided fluid to be detained takes place, nevertheless will increase the whole volume of device certainly, is unfavorable for the design of the less volume water pump of part.
Referring to fig. 1 to 2, the present application first provides a bearing lubrication structure for a cartridge pump, including 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 includes a shaft sleeve 31 and a duplex bearing 32, the shaft sleeve 31 is located in the oil tank 10 and is 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 sleeve 31 is located in the lower space 12 to draw the lubricating oil upward while rotating; the oil tank 10 is further opened with an oil return passage 13 communicating the upper space 11 and the lower space 12.
Since the main shaft 20 starts to rotate and drives the shaft sleeve 31 to rotate together, the lubricating oil can be pulled upwards by the high-speed rotation of the shaft sleeve 31, and 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 reduced.
The shaft sleeve 31 draws the lubricating oil upwards, and can directly draw the lubricating oil in the lower space 12 to the upper space 11, or throw the lubricating oil in the lower space 12 to the lower row of balls of the duplex bearing 32, and further convey the lubricating oil upwards through the upward traction force generated when the lower row of balls rotate; the present application is not limited specifically, as long as the lubricating oil in the lower space 12 can be finally drawn upward to the upper space 11 by the rotation of the shaft sleeve 31, which is full of the lubricating requirement of the dual bearing 32.
After the lubricating oil is drawn to the upper space 11, it can flow back to the lower space 12 along the oil return passage 13 to avoid the lubricating oil from being retained in the upper space 11, thereby causing oil leakage at the oil tank gland.
Because the lubricating oil liquid level in the oil tank 10 in this application is located between the bottom and the duplex bearing 32 of axle sleeve 31, the lower row ball of duplex bearing 32 is not direct submergence in fluid, therefore the water pump begins the work after, the fluid volume of upwards transporting is comparatively controllable, for example:
under the condition that the shaft sleeve 31 directly draws the lubricating oil in the lower space 12 to the upper space 11, the oil quantity of upward oil transportation can be adjusted by designing the shape and the size of the bottom end of the shaft sleeve 31 and the pipe diameter of a drawing oil path of the shaft sleeve 31;
under the condition that the shaft sleeve 31 throws the lubricating oil in the lower space 12 to the lower row of balls of the duplex bearing 32, the amount of the lubricating oil thrown to the lower row of balls during the 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 fed upwards to the whole bearing assembly 30 is further adjusted.
Therefore, in the present application, the amount of the oil delivered upward through the bearing assembly 30 is relatively small on the premise that the lubrication requirement of the duplex bearing 32 can be met, and leakage caused by washing of a large amount of the oil tank gland is avoided; further, 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 does not remain in the tank cover and cause leakage.
In the embodiment shown in fig. 2, the oil tank 10 includes a tank body 110, a bearing box 120 and a gland 130, wherein the bearing box 120 is located between the tank body 110 and the gland 130, and a flange portion of the bearing box 120 is 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 box 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 box 120 to divide an inner space formed by the tank body 110 and the gland 130 into two parts, namely an upper space 11 and a lower space 12;
a through hole is formed at the bottom end of the bearing box 120, so that lubricating oil can enter the bearing box 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, so that the possibility of lubricating oil leakage can be further reduced.
In the embodiment shown in fig. 2, the bottom end of the sleeve 31 has a chamfer inclined from bottom to top in a direction away from the main shaft 20; so that after the spindle 20 drives the shaft sleeve 31 to start rotating, the lubricating oil can be thrown out to the lower row of balls of the duplex bearing 32 along the chamfer under the action of centrifugal force and is dragged and conveyed to the upper space 11 through the duplex bearing 32, thereby completing the lubrication of the duplex bearing 32;
so that upward delivery of oil can be achieved even if the initial oil level is lowered; and the process that the lubricating oil liquid is thrown away from the chamfer serves as an intermediary, so that the lubricating requirement is met, and the amount of the liquid oil which is transported upwards in the working state is reduced, thereby achieving the effect of avoiding the leakage of the lubricating oil.
Of course, the bottom end of the shaft sleeve 31 may be provided with other commonly used guiding structures, such as a through hole with an inclined guiding hole, as long as the bottom end can convey the lubricating oil to a specified direction during rotation.
In the above embodiment, the inclination direction of the chamfer faces the lower row of balls of the duplex bearing 32, so that a larger proportion of the oil thrown out through the shaft sleeve 31 can be directly thrown to the lower row of balls and conveyed upwards through the lower row of balls, thereby increasing the conveying efficiency of the lubricating oil.
In the embodiment shown in fig. 2 and 3, the outer edge surface of the shaft sleeve 31 is provided with a plurality of oil suction grooves 311, the upper ends of the oil suction grooves 311 are communicated with the upper space 11, and the lower ends are 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 action of upward traction force generated by the rotation of the shaft sleeve 31;
after being delivered to the upper space 11, the lubricating oil can flow back to the lower space 12 along the path of the upper row of balls and the lower row of balls under the action of the 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-mentioned embodiment, the upwards transport of lubricating oil relies on the rotation of axle sleeve 31 to realize, therefore comparatively controllable, it is specific, through the shape, the size and the axle sleeve 31 of design axle sleeve 31 bottom draw the pipe diameter of oil circuit etc. all can adjust the fluid volume of upwards transporting to can reduce the fluid volume of upwards transporting when satisfying lubricated demand, in order to reach the effect of avoiding lubricating oil to leak.
In the embodiment shown in fig. 4, an inner spacer 321 and an outer spacer 322 are fixedly disposed between the upper and lower sets of bearings of the duplex bearing 32, and both the inner spacer 321 and the outer spacer 322 have a plurality of through holes radially penetrating therethrough, the top end of the oil suction groove 311 corresponds to the through hole of the inner spacer 321, and the oil tank 10 further has an auxiliary oil return passage 15 communicating the upper space 11 with the through hole of the outer spacer 322.
Part of the oil in the upper space 11 can flow back to the space between the upper and lower two groups of bearings through the auxiliary oil return passage 15 and the through holes of the outer spacer 322, and the oil in the oil suction groove 311 can flow back to the space between the upper and lower two groups of bearings through the through holes of the inner spacer 321;
if the oil amount in the upper space 11 is less, the oil amount conveyed upwards in the oil circuit circulation is less, and the pressure of the oil in the upper space 11 on the upper row of balls is less, so that the influence on the rotation of the upper row of balls to pull the oil upwards is less or even no influence is caused, and therefore the oil between the two groups of bearings is pulled upwards by the upper row of balls to be transported, so that the oil amount transported upwards is increased, and the oil amount in the circulation is increased;
at the moment, the oil amount in the upper space 11 is large, namely the oil amount conveyed upwards in an oil circuit circulation is large, the pressure of the oil in the upper space 11 on the upper row of balls is large, and the influence on the upward traction of the upper row of balls on the oil is large, so that the oil between the two groups of bearings is difficult to further transport upwards, and flows back downwards along the lower row of balls under the action of self gravity, and then the lower row of balls is prevented from transporting the oil upwards, so that the oil amount transported upwards is reduced, and the oil amount in the circulation is reduced;
therefore, by introducing the oil between the two groups of bearings, the flow direction of the part of oil can be adaptively changed 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 too much or too little oil quantity in the circulation is avoided.
In the embodiment shown in fig. 5, the outer edge surface of the shaft sleeve 31 is symmetrically provided with two oil suction grooves 311 by taking the central axis of the main shaft 20 as a center; under this condition, the lubricated demand of duplex bearing 32 row ball about can being satisfied just through the fluid volume of oil groove 311 upwards transportation, and fluid can form unobstructed circulation, can not be detained in gland 130 and bearing box 120's contact surface department to reach the effect of avoiding lubricating oil to leak.
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 oil suction groove can be applied to the situation that the traction force generated by the rotation of the shaft sleeve 31 is not enough to convey the oil vertically upwards along the oil suction groove 311 due to the fact that the rotating speed of the spindle 20 is relatively low or the distance between the upper space 11 and the lower space 12 is too large.
In the embodiment shown in fig. 2 and 3, the shaft sleeve 31 is circumferentially provided with a plurality of oil return holes 312 which are inclined from bottom to top in the direction away from the main shaft 20, and the oil return holes 312 are communicated with the oil suction groove 311; so that the lubricating oil between the sleeve 31 and the main shaft 20 can be returned to the oil suction groove 311 along the oil return hole 312 by the centrifugal force.
In the embodiment shown in fig. 2, the bottom end of the oil tank 10 is further provided with a sealing spacer 14, and the outer side of the sealing spacer 14 is fixedly connected with the oil tank 10; the sealing sleeve 14 is sealed by a labyrinth seal principle to prevent the lubricant oil in the oil tank 10 from leaking from the part penetrating the oil tank 10 along the main shaft 20, thereby reducing the possibility of oil leakage.
In the embodiment shown in fig. 2, a part of the seal retaining sleeve 14 is located between the main shaft 20 and the shaft sleeve 31, and the top end of the seal retaining sleeve 14 corresponds to the inner opening of the oil return hole 312; so that the most part of the oil between the sealing baffle sleeve 14 and the main shaft 20 can be upwards conveyed and thrown back to the oil suction groove 311 through the oil return hole 312 under the rotating action of the main shaft 20, and the small part of the residual oil can be prevented from leaking from the lower side by depending on the sealing action of the sealing baffle sleeve 14, so that the sealing effect of the sealing baffle sleeve 14 is increased, and the possibility of oil leakage is further reduced.
The invention also provides a barrel bag pump. The cartridge pump comprises the bearing lubricating structure.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A bearing lubrication structure for a cartridge pump, characterized by comprising 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 is 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 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) to draw the lubricating oil upwards during rotation;
the oil tank (10) is further provided with an oil return passage (13) which is communicated with the upper space (11) and the lower space (12).
2. The bearing lubrication structure according to claim 1, wherein the bottom end of the boss (31) has a chamfer inclined from bottom to top in a direction away from the main shaft (20).
3. Bearing lubrication arrangement according to claim 2, characterised in that the chamfer is inclined in the direction towards the lower row of balls of the duplex bearing (32).
4. The bearing lubrication structure according to claim 1, wherein the outer peripheral surface of the shaft sleeve (31) is provided with a plurality of oil suction grooves (311), the upper ends of the oil suction grooves (311) communicate with the upper space (11), and the lower ends communicate with the lower space (12).
5. The bearing lubrication structure according to claim 4, wherein the two oil suction grooves (311) are symmetrically formed on the outer peripheral surface of the sleeve (31) around the central axis of the main shaft (20).
6. A bearing lubrication structure according to claim 4, characterised in that the oil suction groove (311) is helical.
7. The bearing lubrication structure according to claim 4, wherein a plurality of oil return holes (312) inclined from bottom to top in a direction away from the main shaft (20) are formed in the shaft sleeve (31) in a circumferential direction in a penetrating manner, and the oil return holes (312) are communicated with the oil suction groove (311).
8. The bearing lubrication structure as claimed in claim 7, wherein a sealing spacer (14) is further arranged at the bottom end of the oil tank (10), and the outer side of the sealing spacer (14) is fixedly connected with the oil tank (10).
9. The bearing lubrication structure as claimed in claim 8, wherein a portion of said seal spacer (14) is located between said main shaft (20) and said shaft sleeve (31), and a top end of said seal spacer (14) corresponds to an inside opening of said oil return hole (312).
10. A cartridge pump characterized by comprising the bearing lubrication structure according to any one of claims 1 to 9.
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 true CN114320995A (en) | 2022-04-12 |
| CN114320995B CN114320995B (en) | 2023-09-05 |
Family
ID=81031362
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 |
| 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 |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
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 |
|---|---|
| CN114320995B (en) | 2023-09-05 |
| WO2023142189A1 (en) | 2023-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5408218B2 (en) | Power transmission device | |
| JP5678325B2 (en) | Gear device for centrifuge | |
| EP0094075B1 (en) | Bearings for the rotor shaft of a vertical motor pump assembly | |
| US6863493B2 (en) | Lubricating systems for regenerative vacuum pumps | |
| US6988980B2 (en) | Separator with bearing lubrication arrangement | |
| CN107269571B (en) | Self-circulation system for lubricating oil of bearing box for pump | |
| EP2662572A1 (en) | Sealing arrangement for the lubricant of a ball bearing in a flow machine | |
| CN209990681U (en) | Pitot tube pump bearing lubricating system | |
| CN114320995A (en) | Bearing lubricating structure and barrel pump with same | |
| CN212272547U (en) | Compressor with a compressor housing having a plurality of compressor blades | |
| CN114294256B (en) | Bearing lubricating structure and barrel pump with same | |
| KR102432443B1 (en) | Pump with leak-proof structure of bearing lubricant | |
| CN215410096U (en) | Axle main reducer owner awl bearing lubricating structure | |
| US2933045A (en) | Centrifugal pumps | |
| CN113137372A (en) | Negative pressure type non-sealing vertical fluorine-lined centrifugal pump | |
| US2976438A (en) | Electric gear-motor drive unit | |
| CN216430469U (en) | Structure for pumping lubricating oil into shaft core oil duct in rotating shaft | |
| JP6699926B2 (en) | Bearing lubrication structure | |
| CN217633762U (en) | Screw type vacuum pump flow lubricating device | |
| JPS6214453Y2 (en) | ||
| JPS6288817A (en) | Thrust slide bearing device | |
| CN217502542U (en) | Reduction gearbox lubricating system | |
| JP2018105448A (en) | Driving machine case | |
| CN213494212U (en) | Bearing barrel of sand making machine | |
| JP3785856B2 (en) | Rotating machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |