CN214742305U - Axial clearance adjusting structure for open impeller centrifugal pump - Google Patents
Axial clearance adjusting structure for open impeller centrifugal pump Download PDFInfo
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- CN214742305U CN214742305U CN202120077395.0U CN202120077395U CN214742305U CN 214742305 U CN214742305 U CN 214742305U CN 202120077395 U CN202120077395 U CN 202120077395U CN 214742305 U CN214742305 U CN 214742305U
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- centrifugal pump
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- open impeller
- bearing
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Abstract
The utility model discloses an axial clearance adjusting structure for an open impeller centrifugal pump, belonging to the field of centrifugal pumps; the bearing is arranged in an inner cavity of a bearing body, the right end of the bearing body is matched with the rotating shaft and is provided with a lubricating oil sealing structure, the inner surface of the left end of the bearing body is horn-shaped, and a backflow groove is axially arranged on the inner surface of the bearing body; the outer surface of the bearing body is provided with adjusting threads, and the right end of the bearing body is provided with a threaded hole and an adjusting bolt matched with the threaded hole. The centrifugal pump has the advantages of simple structure, good stability, safety, reliability, convenience for adjusting the axial clearance of the open impeller centrifugal pump, simplicity in operation, improvement on working efficiency, convenience and effectiveness in use, prolongation of the service life of the centrifugal pump and reduction of maintenance cost.
Description
Technical Field
The utility model relates to a field of centrifugal pump especially relates to an axial clearance adjusts structure for open impeller centrifugal pump.
Background
The open impeller centrifugal pump is suitable for conveying corrosive liquid, and is matched with cleaning systems, food processing, medicine and health, sewage treatment, electroplating bleaching and dyeing, fine chemical engineering, environmental protection engineering and the like, or other equipment for use. In the use process of the open impeller centrifugal pump in the prior art, the axial clearance is inconvenient to adjust, and the clearance between the impeller and the pump body and the clearance between the impeller and the pump cover are too large or too small, so that the normal operation of the centrifugal pump is influenced, the service life of the centrifugal pump is influenced, and the maintenance cost is increased; therefore, it is necessary to design an adjusting structure for conveniently adjusting the axial clearance of the centrifugal pump.
Disclosure of Invention
The utility model aims at providing an axial clearance adjusting structure for an open impeller centrifugal pump, which has simple and reasonable structure and good stability and effectively adjusts the axial clearance of the centrifugal pump; the technical problem is solved.
In order to realize the technical purpose, reach foretell technical requirement, the utility model discloses the technical scheme who adopts is: an axial clearance adjusting structure for an open impeller centrifugal pump is characterized by comprising a stepped rotating shaft, wherein a bearing is arranged on the rotating shaft in a matching manner, the bearing is arranged in an inner cavity of a bearing body, the right end of the bearing body is matched with the rotating shaft and is provided with a lubricating oil sealing structure, the inner surface of the left end of the bearing body is in a horn shape, and a backflow groove is axially arranged on the inner surface of the bearing body; the outer surface of the bearing body is provided with adjusting threads, and the right end of the bearing body is provided with a threaded hole and an adjusting bolt matched with the threaded hole.
Preferably: and radial sealing rings are arranged on two sides of the adjusting thread.
Preferably: the lubricating oil sealing structure adopts an oil seal or a bearing isolator.
Preferably: the adjusting screw thread is matched with the inner surface of the suspension.
Preferably: the left end of the adjusting bolt is in contact with the right end face of the suspension.
The utility model has the advantages that; an axial clearance adjustment structure for an open impeller centrifugal pump, compared with a conventional structure: the right end of the bearing body is provided with a threaded hole and an adjusting bolt matched with the threaded hole, so that the gap far away from the suction inlet of the pump can be adjusted; the adjusting thread is arranged on the outer surface of the bearing body, so that the adjusting clearance can be controlled; the inner surface of the bearing body is axially provided with the backflow groove, and the position of the bearing body matched with the rotating shaft is provided with the lubricating oil sealing structure, so that lubricating oil leakage is effectively avoided; the utility model discloses simple structure, stability is good, safe and reliable, the axial clearance of the open impeller centrifugal pump of being convenient for is adjusted, and easy operation improves work efficiency, and convenient to use is effective, prolongs the life of centrifugal pump, reduces the maintenance cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. a rotating shaft; 2. a bearing; 3. a bearing body; 4. a lubricating oil sealing structure; 5. a reflux tank; 6. adjusting the screw thread; 7. a threaded hole; 8. adjusting the bolt; 9. and a radial sealing ring.
Detailed Description
In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments;
in the drawings: an axial clearance adjusting structure for an open impeller centrifugal pump comprises a stepped rotating shaft 1, wherein a bearing 2 is arranged on the rotating shaft 1 in a matching manner, the bearing 2 is arranged in an inner cavity of a bearing body 3, the right end of the bearing body 3 is matched with the rotating shaft 1 and is provided with a lubricating oil sealing structure 4, the inner surface of the left end of the bearing body 3 is horn-shaped, and a backflow groove 5 is arranged on the inner surface of the bearing body along the axial direction; the outer surface of the bearing body 3 is provided with an adjusting thread 6, and the right end of the bearing body 3 is provided with a threaded hole 7 and an adjusting bolt 8 matched with the threaded hole 7.
Specifically, the lubricating oil sealing structure 4 adopts an oil seal or a bearing isolator; effectively prevent the lubricating oil from leaking. The adjusting screw thread 6 is matched with the inner surface of the suspension; the two sides of the adjusting thread 6 are provided with radial sealing rings 9, so that the sealing performance between the adjusting thread and the suspension is improved. The left end of the adjusting bolt 8 is in contact with the right end face of the suspension, so that the gap in the direction away from the pump suction inlet can be adjusted conveniently.
The utility model discloses a concrete implementation: the outer surface of the bearing body is provided with an adjusting thread, and the size of the proper standard thread is selected through calculation, so that the adjusting distance of the bearing is 1mm every time the bearing body rotates for one circle, and the function of bidirectional adjustment is met. The utility model discloses an axial clearance adjusts when the structural installation uses, measures open impeller centrifugal pump's whole size chain earlier and accords with part drawing technical requirement, and the equipment is accomplished the back, rotates to the position towards pump entry direction earlier, then is used for controlling the regulation screw thread back adjustment in regulation clearance to being fit for the clearance through being used for on the bearing body. The utility model discloses simple structure, stability is good, safe and reliable, the axial clearance of the open impeller centrifugal pump of being convenient for adjusts, and easy operation improves work efficiency, and convenient to use is effective.
The foregoing examples are given for the purpose of illustrating the present invention in a clear and non-restrictive manner, and it will be apparent to those skilled in the art that variations and modifications of the present invention may be made in other variations and modifications based on the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments, and all such variations and modifications as are obvious and desirable in the art are within the scope of the present invention.
Claims (5)
1. The utility model provides an axial clearance adjusts structure for open impeller centrifugal pump which characterized in that: the device comprises a stepped rotating shaft (1), wherein a bearing (2) is arranged on the rotating shaft (1) in a matching manner, the bearing (2) is arranged in an inner cavity of a bearing body (3), the right end of the bearing body (3) is matched with the rotating shaft (1) and is provided with a lubricating oil sealing structure (4), the inner surface of the left end of the bearing body (3) is horn-shaped, and a backflow groove (5) is axially arranged on the inner surface of the bearing body; the outer surface of the bearing body (3) is provided with an adjusting thread (6), and the right end of the bearing body (3) is provided with a threaded hole (7) and an adjusting bolt (8) matched with the threaded hole (7).
2. An axial gap adjusting structure for an open impeller centrifugal pump according to claim 1, characterized in that: and radial sealing rings (9) are arranged on two sides of the adjusting thread (6).
3. An axial gap adjusting structure for an open impeller centrifugal pump according to claim 1, characterized in that: the lubricating oil sealing structure (4) adopts an oil seal or a bearing isolator.
4. An axial gap adjusting structure for an open impeller centrifugal pump according to claim 1, characterized in that: the adjusting screw thread (6) is matched with the inner surface of the suspension.
5. An axial gap adjusting structure for an open impeller centrifugal pump according to claim 1, characterized in that: the left end of the adjusting bolt (8) is in contact with the right end face of the suspension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120077395.0U CN214742305U (en) | 2021-01-13 | 2021-01-13 | Axial clearance adjusting structure for open impeller centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120077395.0U CN214742305U (en) | 2021-01-13 | 2021-01-13 | Axial clearance adjusting structure for open impeller centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214742305U true CN214742305U (en) | 2021-11-16 |
Family
ID=78638849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120077395.0U Active CN214742305U (en) | 2021-01-13 | 2021-01-13 | Axial clearance adjusting structure for open impeller centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214742305U (en) |
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2021
- 2021-01-13 CN CN202120077395.0U patent/CN214742305U/en active Active
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