CN215633935U - Centrifugal pump bearing body structure - Google Patents
Centrifugal pump bearing body structure Download PDFInfo
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- CN215633935U CN215633935U CN202121246733.5U CN202121246733U CN215633935U CN 215633935 U CN215633935 U CN 215633935U CN 202121246733 U CN202121246733 U CN 202121246733U CN 215633935 U CN215633935 U CN 215633935U
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- shaft
- sealing ring
- centrifugal pump
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Abstract
A centrifugal pump bearing body structure comprises a shaft, wherein the shaft penetrates out of a position between a bearing cover and a bearing seat, the bearing cover is fixedly provided with an upper bearing bush, the bearing seat is fixedly provided with a lower bearing bush, lubricating oil is arranged between the shaft and the upper bearing bush as well as between the shaft and the lower bearing bush, an oil blocking flywheel is fixedly arranged on the shaft, and a gap is reserved between the oil blocking flywheel and the upper bearing bush as well as between the oil blocking flywheel and the lower bearing bush. Compared with the prior art, the oil seal device is provided with the oil blocking flywheel, the oil blocking flywheel can greatly reduce the oil leakage problem of the oil seal, and the oil seal device is economical and practical and is convenient to install.
Description
Technical Field
The utility model relates to the technical field of machining, in particular to a centrifugal pump bearing body structure.
Background
An oil seal is a mechanical element used to seal oil (oil is the most common liquid substance in a transmission system and also refers to a general liquid substance), which isolates parts needing lubrication in a transmission part from a force-applying part, and quickly establishes an oil film when a rotor part rotates, thereby preventing the lubricating oil from leaking.
Because customer's demand is diversified day by day, centrifugal pump model and structure are miscellaneous various, but oil seal structure does not have the synchronous renewal, continues to use traditional felt oil seal structure, and oil blanket department oil leak phenomenon is fairly common, leads to centrifugal pump overall structure not to follow up market demand, and the user is strong in the reverberation, and such kind of problem of after-sale processing is more.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: how to design a new oil seal structure, solve the oil leakage problem of the oil seal, in order to solve the above-mentioned problem.
The object of the utility model is achieved in the following way:
a centrifugal pump bearing body structure comprises a shaft, wherein the shaft penetrates out of a position between a bearing cover and a bearing seat, the bearing cover is fixedly provided with an upper bearing bush, the bearing seat is fixedly provided with a lower bearing bush, lubricating oil is arranged between the shaft and the upper bearing bush as well as between the shaft and the lower bearing bush, an oil blocking flywheel is fixedly arranged on the shaft, and a gap is reserved between the oil blocking flywheel and the upper bearing bush as well as between the oil blocking flywheel and the lower bearing bush.
The oil blocking flywheels are arranged in two numbers and are respectively distributed on two sides of the bearing bush.
An annular groove is arranged on the oil blocking flywheel, and an O-shaped sealing ring is arranged in the annular groove.
The side of oil blocking flywheel fixes cyclic annular connection platform, and cyclic annular connection platform is equipped with the screw of a plurality of radial settings, is equipped with hexagon socket head cap holding screw in every screw, and hexagon socket head cap holding screw's front end contact shaft's surface, cyclic annular connection platform passes through hexagon socket head cap holding screw with the axle and fixes.
Two oil sealing rings are arranged between the bearing cover and the bearing seat, the two oil sealing rings are distributed on the outer side of the oil blocking flywheel, and each oil sealing ring comprises an upper semicircle and a lower semicircle; the lower semicircle is provided with a positioning semicircle, and the lower semicircle positioning semicircle of the oil sealing ring is arranged in the bearing seat; a rectangular groove is formed in the oil sealing ring, an arc-shaped oil return groove is formed in the end face of the lower semicircular oil sealing ring of the oil sealing ring, and the arc-shaped oil return groove is lower than an inner hole of the oil sealing ring.
Compared with the prior art, the oil seal device is provided with the oil blocking flywheel, the oil blocking flywheel can greatly reduce the oil leakage problem of the oil seal, and the oil seal device is economical and practical and is convenient to install.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged schematic view of the connection of the shaft to the oil blocking flywheel.
Detailed Description
As shown in fig. 1, a centrifugal pump bearing body structure includes a shaft (rotor part) 10, the shaft 10 penetrates through between a bearing cap 5 and a bearing seat 12, the bearing cap 5 fixes an upper bearing bush 2, the bearing seat 12 fixes a lower bearing bush 11, lubricating oil (i.e., liquid which quickly establishes an oil film when the rotor part rotates) is provided between the shaft 10 and the upper and lower bearing bushes 2, 11, the shaft 10 fixes an oil blocking flywheel 6, and a gap is provided between the oil blocking flywheel 6 and the upper and lower bearing bushes 2, 11, and the smaller the gap, the better the gap is, but the smaller the gap is, the contact with the bearing bushes cannot be achieved.
Two oil blocking flywheels 6 are arranged and respectively distributed on two sides of the bearing bush.
The working principle is as follows:
during operation in the prior art, lubricating oil between the shaft 10 and the upper and lower bearing bushes 2 and 11 (at the oil seals) flows out along the shaft 10, and meanwhile, lubricating oil exposed to the shaft 10 flies out outwards (hereinafter referred to as radial fly-out) due to rotation of the shaft, or lubricating oil exposed to the shaft 10 continues to flow outwards along the shaft (hereinafter referred to as axial flow), both radial fly-out and axial flow cause continuous reduction of lubricating oil (hereinafter referred to as adjacent oil) on the shaft 10 near the bearing bushes, and continuous reduction of the adjacent oil causes accelerated outflow of oil at the oil seals, thereby causing damage to the oil seals.
After the oil blocking flywheel 6 is arranged, two benefits are achieved: firstly, the oil blocking flywheel 6 blocks the axial flow of the shaft, so that the adjacent oil is relatively stable and the adjacent oil is prevented from continuously flowing out; secondly, the radially flying oil can stick to the oil blocking flywheel 6, and after the rotating speed of the shaft is reduced, the oil sticking to the oil blocking flywheel 6 can also flow to the adjacent oil, so that the adjacent oil is increased and flows back to the oil seal. Thus, the lubricating oil at the oil seal is stable.
In order to reduce the gap between the shaft 10 and the oil blocking flywheel 6, an annular groove 62 is formed in the oil blocking flywheel 6, and an O-ring 8 is arranged in the annular groove 62.
In order to fix the shaft 10 and the oil blocking flywheel 6 conveniently, the annular connecting table 61 is fixed on the side surface of the oil blocking flywheel 6, the annular connecting table 61 is provided with a plurality of screw holes 63 which are radially arranged, each screw hole 63 is internally provided with an inner hexagonal concave end fastening screw 7, the front end of each inner hexagonal concave end fastening screw 7 is contacted with the outer surface of the shaft 10, and the annular connecting table 61 and the shaft 10 are fixed through the inner hexagonal concave end fastening screws 7. In this way, the fixing position of the shaft 10 can be conveniently selected
Two oil sealing rings 9 are arranged between the bearing cover 5 and the bearing seat 12, the two oil sealing rings 9 are distributed on the outer side of the oil blocking flywheel 6, and the oil sealing rings 9 comprise upper and lower semicircles; the lower semicircle is provided with a positioning semicircle, and the lower semicircle positioning semicircle of the oil sealing ring is arranged in the bearing seat; the rectangular groove is formed in the oil sealing ring, so that the oil pressure at an oil film formed between the oil sealing ring and the rotor component from inside to outside is reduced, and the throttling effect is achieved; semicircle oil packing circle terminal surface is equipped with circular-arc oil gallery under the oil packing circle, is less than the oil packing circle hole, is convenient for retrieve from inside to outside oil pressure, effectively alleviates the seepage of oil simultaneously, provides convenience for oil system circulation.
The oil blocking flywheel provided with the O-shaped sealing ring is fixed between the bearing bush and the oil sealing ring by the inner hexagonal concave end set screw, the axial space distance between the bearing bush and the bearing seat/cover is compressed, and meanwhile, the diameter of the outer circle of the oil blocking flywheel is larger than the outer diameter of the oil sealing ring, so that the pressure of leakage of lubricating oil from the inner cavity of the bearing part to the oil film of the oil sealing ring is effectively reduced.
The bearing cover 5 and the upper bearing bush 2 are fixed through a positioning pin 3 and a positioning screw 4.
During assembly, the bearing seat 12 is installed on the water seal body part 1 by the stud 13, the nut and the gasket 13, the water seal body part 1 is connected with the main body structure of the centrifugal pump, the end of the shaft needs to be lifted at the moment, and the empty lifting amount is guaranteed to be not less than 0.9 mm.
The oil seal ring 9 on the side close to the water seal body part 1 is mounted on the bearing seat 12.
The lower bearing shell 11 is assembled on the bearing seat 12, and then the upper bearing shell 2 is assembled, the oil blocking flywheel 6 is required to be moved to a corresponding proper position, and the oil blocking flywheel is fixed on the shaft 10 by the hexagon socket set screw 7.
The jackscrew 14 is installed on the water seal body part 1, and the actual lifting amount of the shaft head end is adjusted by adjusting the screwing amount of the jackscrew 14, so that the diameter is not less than 0.6 mm.
And (3) mounting the bearing cover 5 on the bearing seat 12 in a mode of a stud, a nut and a gasket 13, and adjusting the pressing force of the upper bearing bush 2 and the bearing cover 5 to be within 0.05 mm.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.
Claims (5)
1. The utility model provides a centrifugal pump bearing body structure, includes axle (10), wears out between axle (10) from bearing cap (5), bearing frame (12), and bearing cap (5) are fixed and are gone up axle bush (2), and bearing frame (12) are fixed and are gone down axle bush (11), are equipped with lubricating oil, its characterized in that between axle (10) and last axle bush (2), lower axle bush (11): an oil blocking flywheel (6) is fixed on the shaft (10), and a gap is reserved between the oil blocking flywheel (6) and the upper bearing bush (2) and between the oil blocking flywheel and the lower bearing bush (11).
2. The centrifugal pump bearing body structure according to claim 1, wherein: two oil blocking flywheels (6) are arranged and respectively distributed on two sides of the bearing bush.
3. The centrifugal pump bearing body structure according to claim 2, wherein: an annular groove (62) is arranged on the oil blocking flywheel (6), and an O-shaped sealing ring (8) is arranged in the annular groove (62).
4. A centrifugal pump bearing body structure according to claim 3, wherein: an annular connecting table (61) is fixed on the side face of the oil blocking flywheel (6), a plurality of radially arranged screw holes (63) are formed in the annular connecting table (61), an inner hexagonal concave end holding screw (7) is arranged in each screw hole (63), the front end of the inner hexagonal concave end holding screw (7) contacts the outer surface of the shaft (10), and the annular connecting table (61) and the shaft (10) are fixed through the inner hexagonal concave end holding screw (7).
5. Centrifugal pump bearing body structure according to claim 4, characterized in that: two oil sealing rings (9) are arranged between the bearing cover (5) and the bearing seat (12), the two oil sealing rings (9) are distributed on the outer side of the oil blocking flywheel (6), and each oil sealing ring (9) comprises an upper semicircle and a lower semicircle; the lower semicircle is provided with a positioning semicircle, and the lower semicircle positioning semicircle of the oil sealing ring is arranged in the bearing seat; a rectangular groove is formed in the oil sealing ring, an arc-shaped oil return groove is formed in the end face of the lower semicircular oil sealing ring of the oil sealing ring, and the arc-shaped oil return groove is lower than an inner hole of the oil sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121246733.5U CN215633935U (en) | 2021-06-04 | 2021-06-04 | Centrifugal pump bearing body structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121246733.5U CN215633935U (en) | 2021-06-04 | 2021-06-04 | Centrifugal pump bearing body structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215633935U true CN215633935U (en) | 2022-01-25 |
Family
ID=79941464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121246733.5U Active CN215633935U (en) | 2021-06-04 | 2021-06-04 | Centrifugal pump bearing body structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215633935U (en) |
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2021
- 2021-06-04 CN CN202121246733.5U patent/CN215633935U/en active Active
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