CN219932506U - Bearing cap capable of preventing lubricating oil from leaking and slurry pump with bearing cap - Google Patents
Bearing cap capable of preventing lubricating oil from leaking and slurry pump with bearing cap Download PDFInfo
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- CN219932506U CN219932506U CN202321702939.3U CN202321702939U CN219932506U CN 219932506 U CN219932506 U CN 219932506U CN 202321702939 U CN202321702939 U CN 202321702939U CN 219932506 U CN219932506 U CN 219932506U
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- bearing
- cover
- rear end
- end bearing
- bearing cover
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 42
- 239000002002 slurry Substances 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 22
- 230000002265 prevention Effects 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 abstract description 6
- 238000013016 damping Methods 0.000 abstract description 3
- 238000010992 reflux Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Sliding-Contact Bearings (AREA)
Abstract
The utility model provides a bearing cover for preventing lubricating oil leakage and a slurry pump with the bearing cover, which comprise a front end bearing cover (3), a rear end bearing cover (8), a pump shaft (1), a bearing lock nut (2), the front end bearing cover (3), a sealing ring (4), an angular contact ball bearing (5), a bearing upper cover (6), a deep groove ball bearing (7), the rear end bearing cover (8), an oil retaining bearing sleeve (9) and a bearing base (10). According to the utility model, the rectangular annular grooves (11) are formed in the inner hole surfaces of the front end bearing cover (3) and the rear end bearing cover (8), lubricating oil leakage can be prevented through the damping action of the rectangular annular grooves (11), meanwhile, the conical leakage-proof grooves (12) are formed in the inner holes of the front end bearing cover (3) and the rear end bearing cover (8), the rectangular annular grooves (11) and the conical leakage-proof grooves (12) form a reflux passage of lubricating oil together, and the phenomenon that the pump shaft (1) accumulates oil and leaks along the pump shaft (1) and the bearing gland is solved.
Description
Technical Field
The utility model relates to the technical field of slurry pumps, in particular to a bearing cover for preventing lubricating oil from leaking and a slurry pump with the bearing cover.
Background
The slurry pump is a typical single-stage centrifugal pump, and slurry is thrown from the center of the impeller to the outer edge of the impeller under the rotation action, enters a volute cavity formed by a volute, a front guard plate and a rear guard plate, is decelerated along with the gradual expansion of the volute cavity, converts part of kinetic energy into static pressure energy, finally flows into a drainage pipeline at higher pressure, is mainly used for conveying slurry containing solid particles, and is widely applied to the fields of industries such as mines, power plants, coal washery, metallurgy and the like.
In the running process of the slurry pump, due to the limit of the oil level of lubricating oil in the bearing box, part of rotor components are immersed in the lubricating oil, when the rotor components rotate, the lubricating oil is stirred up and flows down along the inner surface of the gland, and directly drips onto the rotating shaft, so that much oil is accumulated on the shaft, the shaft is driven by the rotating shaft, the lubricating oil crawls along the shaft and enters a sealing gap between the gland and the pump shaft, and the sealing gap between the gland and the pump shaft is large, and the sealing resistance is small, so that the oil is difficult to flow back to the bearing box once entering the gap, and is continuously thrown out along the outer side of the shaft, so that the oil accumulation is formed at the shaft end of the pump shaft, and the oil leakage phenomenon is caused.
In view of this, in order to solve the technical problem of lubricating oil leakage between the pump shaft bearing gland and the pump shaft of the existing slurry pump, there is a need for a bearing cap for preventing lubricating oil leakage and a slurry pump having the same, solving the phenomena of pump shaft oil accumulation and leakage along the pump shaft and the bearing gland, and improving the service life of the whole pump.
Disclosure of Invention
The utility model aims at the technical defects, designs a bearing cover with a rectangular sealing ring and a conical leakage-proof groove, and provides a bearing cover for preventing lubricating oil leakage and a slurry pump with the bearing cover.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a prevent bearing cap of lubricating oil leakage, including front end bearing cap and rear end bearing cap, front end bearing cap is including foraminiferous annular cap, rectangular ring channel and toper leak protection groove, wherein the interior circle surface of foraminiferous annular cap sets up a plurality of rectangular ring channel, the interior circle of foraminiferous annular cap is close to the bearing side and sets up toper leak protection groove, the terminal surface department of foraminiferous annular cap evenly drills and establishes 6 through-holes, the rear end bearing cap is including foraminiferous annular cap, rectangular ring channel and toper leak protection groove, wherein the interior circle surface of foraminiferous annular cap sets up a plurality of rectangular ring channel, the interior circle of foraminiferous annular cap is close to the bearing side and sets up toper leak protection groove, 6 through-holes are evenly bored to the terminal surface department of foraminiferous annular cap, the foraminiferous annular cap of rear end bearing cap is kept away from bearing side terminal surface and is seted up the ring channel.
Further, the groove width of the rectangular annular groove is equal to the tooth width, and the groove depth is slightly larger than the groove width or the tooth width.
Further, the shape of the conical leakage-proof groove is conical, the cone top is positioned at the groove bottom of the first rectangular annular groove close to the outer end surfaces of the front end bearing cover and the rear end bearing cover, and the cone angle of the conical leakage-proof groove is 60-120 degrees.
The utility model provides a sediment stuff pump with bearing cap that prevents lubricating oil leakage, including the pump shaft, the bearing lock nut, the front end bearing cap, the sealing washer, angular contact ball bearing, the bearing upper cover, the deep groove ball bearing, the rear end bearing cap, keep off oily bearing housing and bearing base, wherein the pump shaft is installed in the mounting hole between bearing upper cover and the bearing base, two angular contact ball bearings of back-to-back form installation are installed in the bearing of pump shaft front end, a deep groove ball bearing is installed in the bearing of pump shaft rear end, the bearing lock nut passes through the screw thread installation in the front end of pump shaft through the outer disc surface of pump shaft, and the right side terminal surface of bearing lock nut meets the terminal surface department of angular contact ball bearing, the front end bearing cap passes through its hole and installs in the outer disc surface of bearing lock nut, and the front end bearing cap passes through the screw installation in the bearing upper cover and the left side terminal surface department of bearing base, the sealing washer is installed in the sealing chamber of front end bearing cap and the inner disc surface contact with the outer disc surface of bearing lock nut, the rear end bearing cap passes through the right side terminal surface department of installing in bearing upper cover and bearing base, keep off oily bearing housing is installed in the bearing housing in the interference fit mode with the bearing housing's the outer disc surface contact with the inner disc.
Further, the mounting positions of the conical leakage-proof grooves of the front end bearing cover and the rear end bearing cover are positioned at the lowest ends of the front end bearing cover and the rear end bearing cover, and gaps of 0.5 mm-1 mm are arranged among the end faces of the front end bearing cover, the rear end bearing cover and the sealing ring.
Further, the section shape of the oil retaining bearing sleeve is U-shaped, an outer circular groove of the oil retaining bearing sleeve is nested in the circular groove of the rear end bearing cover, and a cavity is formed between the right side end face of the rear end bearing cover and the inner side end face of the oil retaining bearing sleeve.
Compared with the prior art, the bearing cover for preventing lubricating oil leakage and the slurry pump with the bearing cover are characterized in that the rectangular annular grooves are formed in the inner hole surfaces of the front end bearing cover and the rear end bearing cover, the lubricating oil leakage can be prevented through the damping effect of the rectangular annular grooves, the conical leakage-proof grooves are formed in the inner holes of the front end bearing cover and the rear end bearing cover, and the rectangular annular grooves and the conical leakage-proof grooves together form a return passage of the lubricating oil, so that the lubricating oil between the pump shaft and the front end bearing cover and the rear end bearing cover is timely returned into the bearing box of the slurry pump, the phenomenon that the pump shaft is accumulated with the lubricating oil along the pump shaft and the bearing cover is leaked is solved, and the service life of the whole pump is prolonged.
Drawings
FIG. 1 is an overall block diagram of the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is an enlarged view of a portion of B in FIG. 1;
FIG. 4 is a three-dimensional block diagram of the front end bearing cap of the present utility model;
FIG. 5 is a cross-sectional view of the front end bearing cap of the present utility model;
FIG. 6 is a three-dimensional block diagram of the rear end bearing cap of the present utility model;
fig. 7 is a cross-sectional view of the rear end bearing cap of the present utility model.
Marked in the figure as: 1: a pump shaft; 2: a bearing lock nut; 3: a front end bearing cap; 4: a seal ring; 5: angular contact ball bearings; 6: a bearing upper cover; 7: deep groove ball bearings; 8: a rear end bearing cap; 9: an oil retaining bearing sleeve; 10: a bearing base; 11: rectangular annular grooves; 12: a conical leakage-proof groove.
Detailed Description
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.
In order to make the technical problems, technical schemes and implementation effects to be solved more clear, an embodiment of the present utility model is further described below with reference to fig. 1 to 7:
referring to fig. 1, 4, 5, 6 and 7, the bearing cap for preventing lubricating oil leakage comprises a front end bearing cap 3 and a rear end bearing cap 8, wherein the front end bearing cap 3 comprises a porous annular cap, rectangular annular grooves 11 and conical leakage preventing grooves 12, the inner circle surface of the porous annular cap is provided with a plurality of rectangular annular grooves 11, the inner circle of the porous annular cap is provided with the conical leakage preventing grooves 12 close to the bearing side, and 6 through holes are uniformly drilled at the end face of the porous annular cap; the rear end bearing cap 8 comprises a hole annular cap, rectangular annular grooves 11 and conical leakage-proof grooves 12, the inner circle surface of the hole annular cap is provided with a plurality of rectangular annular grooves 11, the inner circle of the hole annular cap is provided with the conical leakage-proof grooves 12 close to the bearing side, the end face of the hole annular cap is uniformly drilled with 6 through holes, and the end face of the hole annular cap of the rear end bearing cap 8, far away from the bearing side, is provided with the annular grooves.
As a preferred embodiment, the groove width and the tooth width of the rectangular annular groove 11 are equal, the groove depth is slightly larger than the groove width or the tooth width, and a plurality of rectangular annular grooves 11 are formed according to the inner hole widths of the front end bearing cover 3 and the rear end bearing cover 8.
As a preferred embodiment, the shape of the conical leakage preventing groove 12 is conical, and the cone top is positioned at the bottom of the first rectangular annular groove 11 near the outer end surfaces of the front end bearing cover 3 and the rear end bearing cover 8, so that the conical leakage preventing groove 12 communicates all the rectangular annular grooves 11 of the inner holes of the front end bearing cover 3 and the rear end bearing cover 8, and lubricating oil entering the rectangular annular grooves 11 can flow back to the conical leakage preventing groove 12 along the rectangular annular grooves 11 and enter the bearing box.
As a preferred embodiment, the cone angle of the conical leakage prevention groove 12 is 60-120 degrees.
Referring to fig. 1, 2 and 3, a slurry pump with a bearing cover for preventing leakage of lubricating oil comprises a pump shaft 1, a bearing lock nut 2, a front end bearing cover 3, a sealing ring 4, an angular contact ball bearing 5, a bearing upper cover 6, a deep groove ball bearing 7, a rear end bearing cover 8, an oil retaining bearing sleeve 9 and a bearing base 10, wherein the pump shaft 1 is arranged in a mounting hole between the bearing upper cover 6 and the bearing base 10, two angular contact ball bearings 5 which are arranged in a back-to-back manner are arranged in the bearing body at the front end of the pump shaft 1, one deep groove ball bearing 7 is arranged in the bearing body at the rear end of the pump shaft 1, the bearing lock nut 2 is arranged at the front end of the pump shaft 1 through threads on the outer circle surface of the pump shaft 1, the right side end surface of the bearing lock nut 2 is connected with the end surface of the angular contact ball bearing 5 through a hole of the bearing lock nut, the front end bearing cover 3 is arranged on the outer circle surface of the bearing lock nut 2 through a screw, the front end bearing cover 3 is arranged on the left side end surface of the bearing cover 6 and the bearing base 10 through the bearing, the sealing ring 4 is arranged in the inner circle cavity of the sealing cover 4 and the inner circle surface of the bearing cover 4 is arranged on the bearing cover 4 in the bearing surface of the bearing sleeve 9 which is in contact with the right end surface of the bearing sleeve 9.
As a preferred embodiment, the mounting positions of the conical leakage grooves 12 of the front end bearing cover 3 and the rear end bearing cover 8 are at the lowest ends of the front end bearing cover 3 and the rear end bearing cover 8, a gap of 0.5 mm-1 mm is arranged between the front end bearing cover 3, the rear end bearing cover 8 and the end faces of the sealing ring 4, the inner circular surface of the sealing ring 4 is contacted with the outer circular surface of the bearing lock nut 2, the sealing effect is achieved on lubricating oil in the bearing box body, but part of lubricating oil still enters the gap between the front end bearing cover 3, the rear end bearing cover 8 and the sealing ring 4 after passing through the sealing ring 4, due to the rotation effect of the pump shaft 1, the lubricating oil in the gap between the front end bearing cover 3, the rear end bearing cover 8 and the sealing ring 4 is thrown into the rectangular annular grooves 11 of the front end bearing cover 3 and the rear end bearing cover 8, the rectangular annular grooves 11 play a role of labyrinth seal, and further the part of lubricating oil flows back to the conical leakage grooves 12 along the rectangular annular grooves 11 of the front end bearing cover 3 and the rear end bearing cover 8, and the lubricating oil is prevented from flowing back to the outer side of the bearing cover 3 and the rear end bearing cover 8 under the action of gravity.
As the preferred embodiment, the cross section shape of the oil retaining bearing sleeve 9 is U-shaped, the outer circular groove of the oil retaining bearing sleeve 9 is nested in the circular groove of the rear end bearing cover 8, the right side end surface of the rear end bearing cover 8 and the inner side end surface of the oil retaining bearing sleeve 9 form a cavity, and meanwhile, a relatively high and stable cavity with relatively high pressure is formed between the oil retaining bearing sleeve 9 rotating along with the pump shaft 1 and the rear end bearing cover 8, so that on one hand, the pressure difference between the inner cavity of the bearing box body and the outside can be balanced, and on the other hand, the leakage of lubricating oil in the bearing box body can be prevented.
As a preferred embodiment, the spacer bush is arranged in the middle of the two angular contact ball bearings 5 which are arranged back to back, the bearing upper cover 6 is provided with a threaded through hole which is arranged as a lubricating oil filling hole at the middle position of the two angular contact ball bearings 5, and when the slurry pump is in operation, a large axial force is generated due to the rotation action of the impeller, and the axial force directly acts on the two angular contact ball bearings 5 which are arranged back to back.
Through adopting above-mentioned technical scheme, the sediment stuff pump is in the operation in-process, because the rotatory stirring effect of rotor parts stirs up lubricating oil and when spilling out along pump shaft 1, when lubricating oil gets into the sealed clearance between pump shaft 1 and front end bearing cap 3, rear end bearing cap 8, because the sealed damping effect of the rectangular annular groove 11 of the hole surface of front end bearing cap 3 and rear end bearing cap 8, lubricating oil will get into in the rectangular annular groove 11 of front end bearing cap 3 and rear end bearing cap 8, at this moment, lubricating oil in the rectangular annular groove 11 of front end bearing cap 3 and rear end bearing cap 8 will flow back to toper leak protection groove 12 along rectangular annular groove 11, lubricating oil can flow back to the bearing box along the clearance between front end bearing cap 3, rear end bearing cap 8 and the sealing washer 4 terminal surface, and then prevent lubricating oil from leaking to the outside of front end bearing cap 3 and rear end bearing cap 8 along pump shaft 1.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. Bearing cap for preventing lubricating oil leakage, comprising a front end bearing cap (3) and a rear end bearing cap (8), characterized in that: the front end bearing cover (3) comprises a hole annular cover, rectangular annular grooves (11) and conical leakage prevention grooves (12), wherein a plurality of rectangular annular grooves (11) are formed in the inner circle surface of the hole annular cover, the conical leakage prevention grooves (12) are formed in the inner circle of the hole annular cover close to the bearing side, 6 through holes are uniformly drilled in the end face of the hole annular cover, the rear end bearing cover (8) comprises a hole annular cover, rectangular annular grooves (11) and conical leakage prevention grooves (12), a plurality of rectangular annular grooves (11) are formed in the inner circle surface of the hole annular cover, the conical leakage prevention grooves (12) are formed in the inner circle of the hole annular cover close to the bearing side, 6 through holes are uniformly drilled in the end face of the hole annular cover, which is far away from the bearing side, of the rear end bearing cover (8).
2. A bearing cap for preventing leakage of lubricating oil according to claim 1, wherein: the groove width of the rectangular annular groove (11) is equal to the tooth width, and the groove depth is slightly larger than the groove width or the tooth width.
3. A bearing cap for preventing leakage of lubricating oil according to claim 1, wherein: the shape of the conical leakage-proof groove (12) is conical, the cone top is positioned at the bottom of the first rectangular annular groove (11) close to the outer end surfaces of the front end bearing cover (3) and the rear end bearing cover (8), and the cone angle of the conical leakage-proof groove (12) is 60-120 degrees.
4. The utility model provides a slurry pump with prevent bearing cap of lubricating oil leakage, includes pump shaft (1), bearing lock nut (2), front end bearing cap (3), sealing washer (4), angular contact ball bearing (5), bearing upper cover (6), deep groove ball bearing (7), rear end bearing cap (8), fender oil bearing cover (9) and bearing base (10), its characterized in that: the pump shaft (1) is arranged in a mounting hole between the bearing upper cover (6) and the bearing base (10), two angular contact ball bearings (5) which are arranged in a back-to-back mode are arranged in the bearing body at the front end of the pump shaft (1), one deep groove ball bearing (7) is arranged in the bearing body at the rear end of the pump shaft (1), a bearing lock nut (2) is arranged at the front end of the pump shaft (1) through threads on the outer circle surface of the pump shaft (1), the right side end surface of the bearing lock nut (2) is connected with the end surface of the angular contact ball bearing (5), the front end bearing cover (3) is arranged on the outer circle surface of the bearing lock nut (2) through an inner hole of the front end bearing cover (3), the front end bearing cover (3) is arranged at the left side end surface of the bearing upper cover (6) and the bearing base (10) through screws, the inner circle surface of the sealing ring (4) is contacted with the outer circle surface of the bearing lock nut (2), the rear end bearing cover (8) is arranged on the right side of the bearing upper cover (6) and is in an interference fit with the bearing sleeve (9) on the outer circle surface of the pump shaft (1) through screws, the sealing ring (4) is arranged in the sealing cavity of the rear end bearing cover (8), and the inner circular surface of the sealing ring (4) is contacted with the outer circular surface of the oil retaining bearing sleeve (9).
5. A slurry pump having a bearing cap for preventing leakage of lubricating oil as set forth in claim 4, wherein: the mounting positions of the conical leakage-proof grooves (12) of the front end bearing cover (3) and the rear end bearing cover (8) are positioned at the lowest ends of the front end bearing cover (3) and the rear end bearing cover (8), and gaps of 0.5 mm-1 mm are arranged among the end faces of the front end bearing cover (3), the rear end bearing cover (8) and the sealing ring (4).
6. A slurry pump having a bearing cap for preventing leakage of lubricating oil as set forth in claim 4, wherein: the section shape of the oil retaining bearing sleeve (9) is U-shaped, an outer circular groove of the oil retaining bearing sleeve (9) is nested in a circular groove of the rear end bearing cover (8), and a cavity is formed between the right side end surface of the rear end bearing cover (8) and the inner side end surface of the oil retaining bearing sleeve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321702939.3U CN219932506U (en) | 2023-07-01 | 2023-07-01 | Bearing cap capable of preventing lubricating oil from leaking and slurry pump with bearing cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321702939.3U CN219932506U (en) | 2023-07-01 | 2023-07-01 | Bearing cap capable of preventing lubricating oil from leaking and slurry pump with bearing cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219932506U true CN219932506U (en) | 2023-10-31 |
Family
ID=88485430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321702939.3U Active CN219932506U (en) | 2023-07-01 | 2023-07-01 | Bearing cap capable of preventing lubricating oil from leaking and slurry pump with bearing cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932506U (en) |
-
2023
- 2023-07-01 CN CN202321702939.3U patent/CN219932506U/en active Active
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| GR01 | Patent grant |