CN209925289U - Rotor locking structure of vertical multi-stage pump - Google Patents
Rotor locking structure of vertical multi-stage pump Download PDFInfo
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- CN209925289U CN209925289U CN201920384100.7U CN201920384100U CN209925289U CN 209925289 U CN209925289 U CN 209925289U CN 201920384100 U CN201920384100 U CN 201920384100U CN 209925289 U CN209925289 U CN 209925289U
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Abstract
The utility model relates to a rotor locking structure of a vertical multistage pump, which comprises a pump shaft, an impeller, a suction shell, a shell sealing ring, a clamping sleeve, a stop pin and a locking bolt; the suction shell is provided with the shell sealing ring; the clamping ring is arranged on the pump shaft; the clamping sleeve is fixedly connected with the clamping ring; the stop pin is arranged on the pump shaft; the locking bolt is arranged at the end part of the pump shaft; the clamping ring is formed by splicing two semicircles with the middle broken; a locking groove is formed in the pump shaft; the clamping sleeve and the pump shaft are positioned through the stop pin; the clamping sleeve is locked by the threaded connection of the locking bolt and the end part of the pump shaft; and a stop washer is arranged at the connecting part of the locking bolt and the pump shaft. The utility model discloses can be used for the rotor locking of vertical multistage pump, novel structure is reasonable, and the preparation is convenient, uses and cost of maintenance low, safe and reliable.
Description
Technical Field
The utility model relates to a rotor locking structure especially relates to a vertical multistage pump rotor locking structure.
Background
The vertical multi-stage pump is a mechanical device capable of conveying tap water to industrial liquid, has the advantages of saving installation space and effectively reducing the cavitation allowance of the device compared with a horizontal multi-stage pump, and is mainly suitable for working conditions of compact layout, low medium density, easiness in vaporization, low temperature and low cavitation allowance of the device. The vertical multistage pump mainly comprises four parts, namely a stator, a rotor, a bearing and a shaft seal, in the operation process, the bearing and a locking nut of the rotor not only bear the residual axial force of the pump, but also bear the self weight of rotor parts such as an impeller and the like, so that the rotor locking nut of the pump can bear great locking force, and once the nut is loosened or falls off, the whole rotor is damaged; in addition, the impeller is generally locked by two locking nuts, a stop washer is arranged between the two nuts, and the structure can effectively achieve the purposes of locking and looseness prevention, but in the using process, as the locking nuts bear larger impeller weight and axial force generated by the pump, when the pump is used for a longer time, the locking nuts are difficult to detach, methods such as heating by fire are needed, the pump is inconvenient to maintain and maintain, and after the locking nuts and the shaft are basically detached, the threads of the locking nuts and the shaft are deformed to cause the pump to be unusable, so that the pump shaft needs to be replaced, unnecessary waste is caused, the supply period is additionally increased, and the using cost is increased. Therefore, a rotor locking structure of a vertical multistage pump is needed, which can be disassembled and maintained more conveniently, and has lower use and maintenance cost, and is safer and more reliable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel structure is reasonable, the preparation is convenient, use and cost of maintenance are low, safe and reliable's vertical multistage pump rotor locking structure.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a rotor locking structure of a vertical multistage pump comprises a pump shaft, an impeller, a suction shell, a shell sealing ring, a clamping sleeve, a stop pin and a locking bolt; the impeller is arranged on the pump shaft; the suction shell is provided with the shell sealing ring; the clamping ring is arranged on the pump shaft; the clamping sleeve is fixedly connected with the clamping ring and arranged on the periphery of the clamping ring; the stop pin is arranged on the pump shaft; the locking bolt is arranged at the end part of the pump shaft.
According to the rotor locking structure of the vertical multistage pump, the clamping ring is formed by splicing the two semicircles with the middle broken, the structure is convenient to update, reasonable, and the rotor locking structure is convenient and rapid to manufacture and install, and saves time and labor.
According to the rotor locking structure of the vertical multistage pump, the locking groove is formed in the pump shaft, the clamping ring is in tolerance fit with the end face of the locking groove, so that a small gap is formed between the clamping ring and the locking groove, the weight of all impellers and the axial force generated by the pump are borne by the clamping ring, the threads of the pump shaft only play a role in fixing, the pump shaft cannot be damaged due to overlarge stress, and the rotor locking structure is lower in use and maintenance cost, safer and more reliable.
According to the rotor locking structure of the vertical multi-stage pump, the clamping sleeve and the pump shaft are positioned through the stop pin, so that the clamping sleeve is convenient to prevent from rotating, the structure is more reasonable, the positioning is more accurate, the use is more convenient, and the locking structure is safer and more reliable.
According to the rotor locking structure of the vertical multi-stage pump, the end part of the pump shaft is provided with the threads, the clamping sleeve is locked through the locking bolt and the threaded connection at the end part of the pump shaft, so that the rotor locking structure is convenient to manufacture and install, lower in cost, firmer and more stable in connection, better in locking effect, safer and more reliable.
According to the rotor locking structure of the vertical multistage pump, the locking washer is arranged at the connecting part of the locking bolt and the pump shaft, so that the locking bolt is prevented from loosening conveniently, and the connection is firmer and more stable, safer and more reliable.
As the preferred scheme of the rotor locking structure of the vertical multistage pump, the threads at the end part of the pump shaft are arranged into high-strength internal threads, so that the locking effect is better, the strength is higher, the pump shaft is firmer and more durable, and the service life is longer.
As the preferred scheme of the rotor locking structure of the vertical multistage pump, the O-shaped sealing ring is arranged at the end part of the pump shaft, so that the sealing effect is better, the corrosion of a medium to threads is prevented, the safety and the reliability are higher, and the service life is longer.
As the preferred scheme of the rotor locking structure of the vertical multi-stage pump, the diameter of the clamping ring is slightly larger than that of the locking groove, so that the clamping ring can be conveniently and rightly clamped in the locking groove, the smaller gap between the clamping ring and the locking groove is ensured, and the locking structure is safer and more reliable.
As the preferred scheme of the rotor locking structure of the vertical multi-stage pump, the clamping ring is made of high-strength stainless steel, so that the clamping ring is more firm and durable, higher in strength, safer and more reliable, and longer in service life.
The utility model has the advantages that: the impeller of the utility model is arranged on the pump shaft; the suction shell is provided with a shell sealing ring; the clamping ring is arranged on the pump shaft; the clamping sleeve is fixedly connected with the clamping ring and is arranged at the periphery of the clamping ring; the stop pin is arranged on the pump shaft; the locking bolt is arranged at the end part of the pump shaft; the clamping ring is formed by splicing two semicircles with the middle broken; the pump shaft is provided with a locking groove, and the end faces of the clamping ring and the locking groove are in tolerance fit; the clamping sleeve and the pump shaft are positioned through the stop pin; the end part of the pump shaft is provided with threads, and the clamping sleeve is locked by the threaded connection of the locking bolt and the end part of the pump shaft; the locking bolt is equipped with lock washer with the position of being connected of pump shaft, the utility model discloses can be used for the rotor locking of vertical multistage pump, novel structure is reasonable, and the preparation is convenient, uses and cost of maintenance low, safe and reliable.
Drawings
Fig. 1 is a schematic structural diagram of a rotor locking structure of a vertical multi-stage pump in the embodiment.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention 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 invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1, a rotor locking structure of a vertical multistage pump comprises a pump shaft 1, an impeller 2, a suction casing 3, a casing sealing ring 4, a clamping ring 5, a clamping sleeve 6, a stop pin 7 and a locking bolt 8; the impeller 2 is arranged on the pump shaft 1; the suction shell 3 is provided with the shell sealing ring 4; the clamping ring 5 is arranged on the pump shaft 1; the clamping sleeve 6 is fixedly connected with the clamping ring 5, and the clamping sleeve 6 is arranged on the periphery of the clamping ring 5; the stop pin 7 is arranged on the pump shaft 1; the locking bolt 8 is arranged at the end part of the pump shaft 1.
In one embodiment of the rotor locking structure of the vertical multistage pump, the clamping ring 5 is formed by splicing two semicircles with the middle broken, so that the structure is convenient to update and reasonable, the manufacturing and the installation are more convenient and faster, and the time and the labor are saved.
In one embodiment of the rotor locking structure of the vertical multistage pump, the pump shaft 1 is provided with the locking groove 9, the clamping ring 5 is in tolerance fit with the end face of the locking groove 9, so that the clamping ring 5 and the locking groove 9 are ensured to have a small gap, the weight of all the impellers 2 and the axial force generated by the pump are borne by the clamping ring 5, the threads of the pump shaft 1 only play a role in fixation, the pump shaft cannot be damaged due to overlarge stress, and the rotor locking structure is lower in use and maintenance cost, and is safer and more reliable.
In one embodiment of the rotor locking structure of the vertical multistage pump, the clamping sleeve 6 and the pump shaft 1 are positioned through the stop pin 7, so that the clamping sleeve 6 is prevented from rotating conveniently, the structure is more reasonable, the positioning is more accurate, the use is more convenient, and the locking structure is safer and more reliable.
In one embodiment of the rotor locking structure of the vertical multistage pump, the end part of the pump shaft 1 is provided with threads, and the clamping sleeve 6 is locked by the locking bolt 8 and the threaded connection at the end part of the pump shaft 1, so that the rotor locking structure is convenient to manufacture and install, lower in cost, firmer and more stable in connection, better in locking effect, safer and more reliable.
In one embodiment of the rotor locking structure of the vertical multistage pump, the connecting part of the locking bolt 8 and the pump shaft 1 is provided with a stop washer 10, so that the locking bolt 8 is prevented from loosening, and the connection is firmer, more stable, safer and more reliable.
In one embodiment of the rotor locking structure of the vertical multistage pump, the threads at the end part of the pump shaft 1 are high-strength internal threads, so that the locking effect is better, the strength is higher, the locking structure is firmer and more durable, and the service life is longer.
In one embodiment of the rotor locking structure of the vertical multi-stage pump, the end part of the pump shaft 1 is provided with the O-shaped sealing ring, so that the sealing effect is better, the corrosion of a medium to threads is prevented, the safety and the reliability are higher, and the service life is longer.
In an embodiment of the rotor locking structure of the vertical multistage pump, the diameter of the clamping ring 5 is slightly larger than that of the locking groove 9, so that the clamping ring 5 can be just clamped in the locking groove 9, and the clamping ring 5 and the locking groove 9 are ensured to have smaller clearance and to be safer and more reliable.
In one embodiment of the rotor locking structure of the vertical multistage pump, the clamping ring 5 is made of high-strength stainless steel, so that the clamping ring is more firm and durable, has higher strength, is safer and more reliable, and has longer service life.
The impeller 2 of the utility model is arranged on the pump shaft 1; the suction shell 3 is provided with a shell sealing ring 4; the clamping ring 5 is arranged on the pump shaft 1; the clamping sleeve 6 is fixedly connected with the clamping ring 5, and the clamping sleeve 6 is arranged on the periphery of the clamping ring 5; the stop pin 7 is arranged on the pump shaft 1; the locking bolt 8 is arranged at the end part of the pump shaft 1; the clamping ring 5 is formed by splicing two semicircles with the middle broken; the pump shaft 1 is provided with a locking groove 9, and the end faces of the clamping ring 5 and the locking groove 9 are in tolerance fit; the clamping sleeve 6 and the pump shaft 1 are positioned through the stop pin 7; the end part of the pump shaft 1 is provided with threads, and the clamping sleeve 6 is locked by the threaded connection of the locking bolt 8 and the end part of the pump shaft 1; and a stop washer 10 is arranged at the connecting part of the locking bolt 8 and the pump shaft 1. The utility model discloses can be used for the rotor locking of vertical multistage pump, novel structure is reasonable, and the preparation is convenient, uses and cost of maintenance low, safe and reliable.
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 represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. The utility model provides a vertical multistage pump rotor locking structure which characterized in that: the pump comprises a pump shaft (1), an impeller (2), a suction shell (3), a shell sealing ring (4), a clamping ring (5), a clamping sleeve (6), a stop pin (7) and a locking bolt (8); the impeller (2) is arranged on the pump shaft (1); the suction shell (3) is provided with the shell sealing ring (4); the clamping ring (5) is arranged on the pump shaft (1); the clamping sleeve (6) is fixedly connected with the clamping ring (5), and the clamping sleeve (6) is arranged on the periphery of the clamping ring (5); the stop pin (7) is arranged on the pump shaft (1); the locking bolt (8) is arranged at the end part of the pump shaft (1).
2. The vertical multistage pump rotor locking structure according to claim 1, characterized in that: the clamping ring (5) is formed by splicing two semicircles with a broken middle part.
3. The vertical multistage pump rotor locking structure according to claim 1, characterized in that: the pump shaft (1) is provided with a locking groove (9), and the clamping ring (5) is in tolerance fit with the end face of the locking groove (9).
4. The vertical multistage pump rotor locking structure according to claim 1, characterized in that: the clamping sleeve (6) and the pump shaft (1) are positioned through the stop pin (7).
5. The vertical multistage pump rotor locking structure according to claim 1, characterized in that: the end part of the pump shaft (1) is provided with threads, and the clamping sleeve (6) is locked by the threaded connection of the locking bolt (8) and the end part of the pump shaft (1).
6. The vertical multistage pump rotor locking structure according to claim 1, characterized in that: and a stop washer (10) is arranged at the connecting part of the locking bolt (8) and the pump shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920384100.7U CN209925289U (en) | 2019-03-25 | 2019-03-25 | Rotor locking structure of vertical multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920384100.7U CN209925289U (en) | 2019-03-25 | 2019-03-25 | Rotor locking structure of vertical multi-stage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925289U true CN209925289U (en) | 2020-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920384100.7U Active CN209925289U (en) | 2019-03-25 | 2019-03-25 | Rotor locking structure of vertical multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925289U (en) |
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2019
- 2019-03-25 CN CN201920384100.7U patent/CN209925289U/en active Active
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