CN217002378U - Shaft seal structure that compact centrifugal pump rotor area was supported - Google Patents
Shaft seal structure that compact centrifugal pump rotor area was supported Download PDFInfo
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- CN217002378U CN217002378U CN202123077982.9U CN202123077982U CN217002378U CN 217002378 U CN217002378 U CN 217002378U CN 202123077982 U CN202123077982 U CN 202123077982U CN 217002378 U CN217002378 U CN 217002378U
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Abstract
The utility model provides a shaft seal structure with a support for a compact centrifugal pump rotor, which comprises a pump shell, wherein a sealing body is arranged in the pump shell, one side of the sealing body is provided with a mechanical sealing cover, a first rubber sealing ring is arranged between the sealing body and the mechanical sealing cover, one side of the mechanical sealing cover is provided with a bearing body, a bearing is arranged in the bearing body, one side of the bearing is provided with a bearing retainer ring, the other side of the bearing is provided with a locking nut, and a locking gasket is arranged between the bearing and the locking nut. The utility model shortens the axial span length of the centrifugal pump to the utmost extent, ensures the shaft seal function of the centrifugal pump, effectively improves the vibration performance and the operation performance of the pump shaft in the operation process, prolongs the life cycle of the rotor part of the pump shaft and saves the operation and maintenance cost of the pump shaft; meanwhile, the production cost of pump shaft parts is reduced, and the ingenious rotor support and shaft seal structural design makes the follow-up disassembly and maintenance more convenient.
Description
Technical Field
The utility model relates to the technical field of fluid machinery and engineering equipment, in particular to a shaft seal structure with a support for a compact centrifugal pump rotor.
Background
The water pump is used as a general industrial product and is widely served in various social fields. The centrifugal pump is used as the most common water pump product, has the characteristics of wide flow lift parameter range and relatively stable running performance, and is widely applied to the fields of building construction, heating ventilation air conditioning, municipal water conservancy, ferrous metallurgy, water plants, power plants and the like. As an important core component of the centrifugal pump, the structural form of the support and the shaft seal position of the rotor component directly relates to the shaft seal performance and the running performance of the pump shaft, and further has a vital influence on the service life and the comprehensive running performance of the whole pump shaft rotor component. Therefore, the mode and the form of the rotor support and the shaft end sealing structure are key factors for guaranteeing long-term efficient and stable operation of the pump shaft rotor assembly.
The prior art has the following problems:
the existing shaft seal structure with the support for the rotor of the compact centrifugal pump has the phenomenon of large axial span, and further solves the problems that the rigidity and strength performance of a pump shaft is poor, the service life of a rotor component is short, the performance parameters such as vibration are high, the weight and the cost of key parts such as a pump shell are high, and the like. Furthermore, the short life of the rotor assembly means that frequent repair and replacement are required for subsequent maintenance, which is costly to maintain.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a compact centrifugal pump rotor shaft seal structure with a support, which solves the problem of larger axial span existing at present.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a bearing seal structure that compact centrifugal pump rotor area was supported, includes the pump case, the inside seal that is provided with of pump case, seal one side is provided with the mechanical seal gland, be provided with first rubber seal between seal and the mechanical seal gland, mechanical seal gland one side is provided with the bearing body, the inside bearing that is provided with of bearing body, bearing one side is provided with the bearing retainer ring, the bearing opposite side is provided with lock nut, be provided with the locking shim between bearing and the lock nut, the inside pump shaft that is provided with of bearing, the pump shaft is close to the mechanical seal gland and is provided with the throwing water ring, be provided with mechanical seal between pump shaft and the mechanical seal gland, the pump shaft is close to mechanical seal and is provided with mechanical seal location snap ring, be provided with second rubber seal between pump case and the seal.
As a preferable technical scheme of the utility model, the sealing body is positioned between the pump shell and the mechanical sealing cover, and the sealing body is connected with the pump shell through a bolt.
As a preferred technical scheme of the utility model, the mechanical seal gland is positioned between the sealing body and the bearing body and is connected with the sealing body through bolts.
As a preferred technical scheme of the utility model, the bearing body is positioned on the right side of the mechanical seal gland and is connected with the mechanical seal gland through a bolt.
As a preferable technical scheme of the utility model, the locking gasket is arranged on the pump shaft and is positioned between the bearing and the locking nut.
As a preferable technical scheme of the utility model, the water slinger is arranged on the pump shaft and is positioned between the machine seal gland and the bearing retainer ring.
As a preferable technical scheme of the utility model, the mechanical seal is arranged on the pump shaft and is positioned between the mechanical seal positioning clamping ring and the mechanical seal pressing cover.
Compared with the prior art, the utility model provides a shaft seal structure with a support for a rotor of a compact centrifugal pump, which has the following beneficial effects:
the shaft seal structure with the support for the rotor of the compact centrifugal pump shortens the axial span length of the centrifugal pump to the maximum extent, ensures the shaft seal function of the centrifugal pump, effectively improves the vibration performance and the operation performance of a pump shaft in the operation process, prolongs the life cycle of a rotor component of the pump shaft and saves the operation and maintenance cost of the pump shaft; meanwhile, the production cost of pump shaft parts is reduced, and the subsequent disassembly and maintenance are more convenient due to the ingenious rotor support and shaft seal structural design.
Drawings
FIG. 1 is a schematic view of a rotor support and shaft seal structure of a compact centrifugal pump;
FIG. 2 is a schematic view of a mechanical seal gland structure;
fig. 3 is a schematic structural diagram of the bearing body.
In the figure: 1. a pump housing; 2. a seal body; 3. a mechanical seal gland; 4. a first rubber seal ring; 5. a bearing body; 6. a bearing; 7. a bearing retainer ring; 8. locking the nut; 9. a locking washer; 10. a pump shaft; 11. a water throwing ring; 12. mechanical sealing; 13. a mechanical seal positioning snap ring; 14. and a second rubber sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, in the present embodiment: a compact shaft seal structure with a support for a centrifugal pump rotor comprises a pump shell 1, wherein a sealing body 2 is arranged in the pump shell 1, a mechanical seal gland 3 is arranged on one side of the sealing body 2, a first rubber seal ring 4 is arranged between the sealing body 2 and the mechanical seal gland 3, a bearing body 5 is arranged on one side of the mechanical seal gland 3, a bearing 6 is arranged in the bearing body 5, the bearing 6 is arranged on a pump shaft 10 and plays a role in supporting and driving, a bearing retainer ring 7 is arranged on one side of the bearing 6 and plays a role in positioning the bearing 6 through the bearing retainer ring 7, a locking nut 8 is arranged on the other side of the bearing 6, a locking gasket 9 is arranged between the bearing 6 and the locking nut 8, a pump shaft 10 is arranged in the bearing 6, the pump shaft 10 is a driving bearing part of the pump set and provides functions of tensile strength, torsion resistance and the like in the operation process of the pump set, a water throwing ring 11 is arranged on the pump shaft part 10 close to the mechanical seal gland 3, a mechanical seal 12 is arranged between the pump shaft 10 and the mechanical seal gland 3, a mechanical seal positioning snap ring 13 is arranged on the pump shaft 10 close to the mechanical seal 12, and a second rubber sealing ring 14 is arranged between the pump shell 1 and the sealing body 2.
In the embodiment, the sealing body 2 is positioned between the pump shell 1 and the mechanical sealing gland 3, the sealing body 2 is connected with the pump shell 1 through bolts, the sealing body 2 is arranged on the right side of the pump shell 1 and connected with the pump shell 1 through 4 bolts, and the end face sealing is realized between the pump shell 1 and the sealing body 2 through the second rubber sealing ring 14, so that the transmission medium is prevented from leaking along the end face; the mechanical seal gland 3 is positioned between the seal body 2 and the bearing body 5, the mechanical seal gland 3 is connected with the seal body 2 through bolts, the mechanical seal gland 3 is installed between the seal body 2 and the bearing body 5 and is connected with the seal body 2 through 2 bolts, end face sealing is realized between the seal body 2 and the mechanical seal gland 3 through a first rubber sealing ring 4, leakage of a transmission medium along the end face is prevented, the mechanical seal gland 3 has another main function of connecting the bearing body 5 through 4 bolts to provide the functions of guaranteeing the connection strength and axially positioning, and therefore the function of shortening the axial span of a rotor of the centrifugal pump is realized; the bearing body 5 is positioned on the right side of the mechanical seal gland 3, the bearing body 5 is connected with the mechanical seal gland 3 through bolts, the bearing body 5 is arranged on the right side of the mechanical seal gland 3 and is connected with the mechanical seal gland 3 through 4 bolts, and the main function of the bearing body is to support and position the bearing 6 and ensure that the bearing can normally work for a long time; the locking washer 9 is arranged on the pump shaft 10, the locking washer 9 is positioned between the bearing 6 and the locking nut 8, the locking washer 9 and the locking nut 8 are respectively arranged on the right side of the bearing 6, and the locking washer and the locking nut are arranged on the pump shaft 10 and are used for preventing the bearing 6 from moving axially; the water slinging ring 11 is arranged on the pump shaft 10, the water slinging ring 11 is positioned between the mechanical seal gland 3 and the bearing retainer ring 7, the water slinging ring 11 is arranged on the pump shaft 10 and is positioned between the mechanical seal gland 3 and the bearing retainer ring 7, when the mechanical seal 12 is damaged, the transmission medium can flow out from the shaft seal position along the pump shaft 10, and the water slinging ring 11 plays a role of timely slinging the transmission medium in the axial direction to prevent the transmission medium from damaging the bearing 6 when the transmission medium enters the bearing 6; the mechanical seal 12 is installed on the pump shaft 10, the mechanical seal 12 is located between the mechanical seal positioning clamping ring 13 and the mechanical seal gland 3, the mechanical seal 12 is installed on the left side of the mechanical seal gland 3 and installed on the pump shaft 10 to play an axial sealing role and prevent transmission media from leaking along the axial direction, the mechanical seal positioning clamping ring 13 is installed on the left side of the mechanical seal 12 and installed on the pump shaft 10 to play a positioning role on the mechanical seal 12 and ensure that the mechanical seal 12 is in a normal working state.
The working principle and the using process of the utility model are as follows: when the device is used, a power supply is connected firstly, so that the pump shaft 10 rotates, the device is started for use, the end face sealing is realized between the pump shell 1 and the sealing body 2 in the device through the second rubber sealing ring 14, the transmission medium is prevented from leaking along the end face, the end face sealing is realized between the sealing body 2 and the mechanical seal gland 3 through the first rubber sealing ring 4, the transmission medium is prevented from leaking along the end face, the mechanical seal gland 3 is connected with the bearing body 5 through 4 bolts, the connection strength guarantee and the axial positioning function are provided, so that the axial span of the rotor of the centrifugal pump is shortened, the bearing body 5 is connected with the mechanical seal gland 3 through 4 bolts, the bearing 6 is supported and positioned, the long-term normal operation of the bearing is ensured, the right side of the bearing 6 is respectively provided with the locking gasket 9 and the locking nut 8 which are arranged on the pump shaft 10, the locking gasket and the locking nut are used for preventing the bearing 6 from axial movement, the bearing 6 is arranged in the inner cavity of the bearing body 5 and is arranged on the pump shaft 10 to play a role of supporting and driving, the bearing retainer ring 7 is arranged on the left side of the bearing body 5 and is arranged on the pump shaft 10 to play a role of positioning the bearing 6, the water slinging ring 11 is arranged on the pump shaft and is positioned between the mechanical seal gland 3 and the bearing retainer ring 7, when the mechanical seal 12 is damaged, a transmission medium can flow out from the shaft seal position along the pump shaft 10, the water slinging ring 11 plays a role of timely slinging out the transmission medium in the axial direction to prevent the transmission medium from damaging the bearing 6 when entering the bearing 6, the mechanical seal 12 is arranged on the left side of the mechanical seal gland 3 and is arranged on the pump shaft 10 to play an axial sealing role to prevent the transmission medium from leaking in the axial direction, the mechanical seal positioning snap ring 13 is arranged on the left side of the mechanical seal 12 and is arranged on the pump shaft 10 to play a role of positioning the mechanical seal 12 to ensure that the mechanical seal 12 is in a normal working state, the device adopts a compact axial design, the axial span length of the centrifugal pump is shortened to the maximum extent, and the special design of the mechanical seal gland 3 not only ensures the shaft seal function of the centrifugal pump, but also plays a role of connecting a bearing body 5, effectively improves the vibration performance and the operation performance of the pump unit 10 in the operation process, prolongs the life cycle of a rotor component of the pump unit, and saves the operation and maintenance cost of the pump unit; meanwhile, the reduction of the axial length of the pump set also means the reduction of the weight of the pump set, the production cost of pump set parts is reduced, and the subsequent disassembly and maintenance are more convenient due to the ingenious rotor support and shaft seal structural design.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a shaft seal structure that compact centrifugal pump rotor area was supported which characterized in that: the pump comprises a pump shell (1), wherein a sealing body (2) is arranged in the pump shell (1), a mechanical sealing cover (3) is arranged on one side of the sealing body (2), a first rubber sealing ring (4) is arranged between the sealing body (2) and the mechanical sealing cover (3), a bearing body (5) is arranged on one side of the mechanical sealing cover (3), a bearing (6) is arranged in the bearing body (5), a bearing retainer ring (7) is arranged on one side of the bearing (6), a locking nut (8) is arranged on the other side of the bearing (6), a locking gasket (9) is arranged between the bearing (6) and the locking nut (8), a pump shaft (10) is arranged in the bearing (6), a water throwing ring (11) is arranged on the pump shaft (10) close to the mechanical sealing cover (3), and a mechanical seal (12) is arranged between the pump shaft (10) and the mechanical sealing cover (3), a mechanical seal positioning snap ring (13) is arranged on the pump shaft (10) close to the mechanical seal (12), and a second rubber sealing ring (14) is arranged between the pump shell (1) and the sealing body (2).
2. The compact centrifugal pump rotor shaft seal construction with support of claim 1 wherein: the sealing body (2) is located between the pump shell (1) and the mechanical sealing cover (3), and the sealing body (2) is connected with the pump shell (1) through bolts.
3. The compact centrifugal pump rotor shaft seal construction with support of claim 1 wherein: the mechanical seal pressing cover (3) is located between the sealing body (2) and the bearing body (5), and the mechanical seal pressing cover (3) is connected with the sealing body (2) through bolts.
4. The compact centrifugal pump rotor shaft seal construction with support of claim 1 wherein: the bearing body (5) is located on the right side of the mechanical seal gland (3), and the bearing body (5) is connected with the mechanical seal gland (3) through a bolt.
5. The compact centrifugal pump rotor shaft seal construction with support of claim 1 wherein: the locking washer (9) is installed on the pump shaft (10), and the locking washer (9) is located between the bearing (6) and the locking nut (8).
6. The compact centrifugal pump rotor shaft seal construction with support of claim 1 wherein: the water slinging ring (11) is installed on the pump shaft (10), and the water slinging ring (11) is located between the machine seal gland (3) and the bearing retainer ring (7).
7. The compact centrifugal pump rotor shaft seal construction with support of claim 1 wherein: the mechanical seal (12) is installed on the pump shaft (10), and the mechanical seal (12) is located between the mechanical seal positioning clamping ring (13) and the mechanical seal pressing cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123077982.9U CN217002378U (en) | 2021-12-09 | 2021-12-09 | Shaft seal structure that compact centrifugal pump rotor area was supported |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123077982.9U CN217002378U (en) | 2021-12-09 | 2021-12-09 | Shaft seal structure that compact centrifugal pump rotor area was supported |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217002378U true CN217002378U (en) | 2022-07-19 |
Family
ID=82384640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123077982.9U Active CN217002378U (en) | 2021-12-09 | 2021-12-09 | Shaft seal structure that compact centrifugal pump rotor area was supported |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217002378U (en) |
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2021
- 2021-12-09 CN CN202123077982.9U patent/CN217002378U/en active Active
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