CN114135490B - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- CN114135490B CN114135490B CN202111565631.4A CN202111565631A CN114135490B CN 114135490 B CN114135490 B CN 114135490B CN 202111565631 A CN202111565631 A CN 202111565631A CN 114135490 B CN114135490 B CN 114135490B
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- Prior art keywords
- pump
- impeller
- force measuring
- shaft head
- adjusting
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- 238000009434 installation Methods 0.000 claims abstract description 13
- 230000005465 channeling Effects 0.000 claims abstract description 4
- 230000007423 decrease Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009795 derivation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a centrifugal pump, which relates to the technical field of centrifugal pumps and mainly aims to enable the installation and operation of the centrifugal pump to be simpler and more convenient and avoid wasting materials; and meanwhile, the accuracy of measuring the torque by the force measuring device is improved. The main technical scheme of the invention is as follows: the centrifugal pump comprises a pump body, wherein the pump body comprises a pump shaft and an impeller, and the impeller comprises a mounting hole; the shaft head comprises a first end and a second end, the first end is connected with the force measuring part, and the outer diameter of the shaft head gradually decreases from the first end to the second end; the profile shape of the mounting hole is matched with that of the shaft head, the impeller is sleeved on the shaft head through the mounting hole and is in interference fit with the shaft head, and the shaft head is used for adjusting the axial channeling of the impeller.
Description
Technical Field
The invention relates to the technical field of centrifugal pumps, in particular to a centrifugal pump.
Background
In order to ensure the normal operation of the centrifugal pump, hydraulic components such as the impeller and the guide vane need to be replaced and maintained regularly, the impeller and the guide vane need to be installed accurately after being disassembled, and the radial force of the impeller needs to be monitored so that the release pump set can work normally.
At present, when an impeller is installed, shafts with different lengths are usually required to be manufactured, then the shafts with corresponding lengths are selected to be installed to adjust the axial position of the impeller so as to meet the relative position relation between the impeller and a guide vane, and streamline required by the impeller and the guide vane is realized. Furthermore, force measuring devices are typically installed between the motor shaft and the pump shaft for measuring the torque required for the rotation of the pump shaft, which inevitably has a set variable due to the length of the pump shaft, and the force measuring devices require measuring the torque of the shaft head through the pump shaft, and thus the accuracy of the measurement results is low.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a centrifugal pump, which mainly aims to make the installation and operation of the centrifugal pump simpler and more convenient and avoid wasting materials; and meanwhile, the accuracy of measuring the torque by the force measuring device is improved.
In order to achieve the above purpose, the present invention mainly provides the following technical solutions:
an embodiment of the present invention provides a centrifugal pump including:
the pump comprises a pump body and an impeller, wherein the impeller comprises a mounting hole;
the shaft head comprises a first end and a second end, the first end is connected with the force measuring part, and the outer diameter of the shaft head gradually decreases from the first end to the second end;
the profile shape of the mounting hole is matched with that of the shaft head, the impeller is sleeved on the shaft head through the mounting hole and is in interference fit with the shaft head, and the shaft head is used for adjusting the axial channeling of the impeller.
Further, the pump body further comprises a conductive slip ring, wherein the conductive slip ring comprises an inner ring and an outer ring rotationally connected with the inner ring; the inner ring is sleeved on the pump shaft;
a mounting channel is arranged in the pump shaft;
the force measuring part is electrically connected with the inner ring through a wire, and the wire is arranged in the mounting channel.
Further, the force measuring mechanism further comprises a wireless communication module, the wireless communication module is electrically connected with the force measuring part, and the wireless communication module is used for being connected with external equipment in a wireless mode.
Further, the pump body further comprises a guide vane, and the guide vane is sleeved on the periphery of the impeller;
the force measuring mechanism further comprises a sealing piece, the sealing piece is connected with the shaft head and the force measuring part respectively, and the shaft head and the force measuring part are rotatably connected with the guide vane through the sealing piece.
Further, the pump body further comprises a shell, the guide vane is connected with the shell, and the impeller and the guide vane are positioned on the outer side of the shell;
the force measuring mechanism is located outside the housing.
Further, the centrifugal pump further includes:
the output shaft of the driving part is connected with the pump shaft;
the device comprises a fixed platform, wherein a pump shell is arranged on the fixed platform and is provided with an installation opening;
the movable platform is movably arranged on the fixed platform along the direction towards or away from the mounting port;
the pump body and the driving part are arranged on the moving platform, the pump shell, the pump body and the driving part are coaxially arranged, and the impeller faces the mounting opening.
Further, a track is arranged on the fixed platform;
the mobile platform is provided with rollers, and the rollers are in rolling connection with the rails.
Further, the pump body is arranged on the mobile platform through a first placing plate;
the driving part is arranged on the mobile platform through a second placing plate.
Further, the centrifugal pump further includes:
and the adjusting part is arranged on the second placing plate and used for adjusting the mounting position of the driving part on the moving platform.
Further, the adjusting part comprises a fixing piece and an adjusting bolt, a threaded hole is formed in the fixing piece, the adjusting bolt is connected in the threaded hole in a threaded mode, and the adjusting bolt is abutted to the base of the driving part;
the number of the fixing pieces and the number of the adjusting bolts are at least two respectively, and the at least two adjusting bolts are correspondingly connected in threaded holes of the at least two fixing pieces in a threaded manner;
the number of the adjusting parts is at least four, and the adjusting parts are oppositely arranged in pairs.
By means of the technical scheme, the invention has at least the following beneficial effects:
the centrifugal pump provided by the embodiment of the invention comprises a force measuring mechanism, wherein the force measuring mechanism comprises a force measuring part connected with a pump shaft and a shaft head connected with the force measuring part, and the impeller is in interference fit connection with the shaft head; and the force measuring part of the force measuring mechanism is directly connected with the impeller through the shaft head, so that the influence on the measuring result caused by the deformation of the pump shaft is reduced, and the accuracy of the measuring result is improved.
Drawings
Fig. 1 is a schematic structural diagram of a pump body in a centrifugal pump according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a centrifugal pump at a first view angle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another centrifugal pump according to an embodiment of the invention at a second view angle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present embodiment and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present embodiment.
As shown in fig. 1, an embodiment of the present invention provides a centrifugal pump including a pump body 1, the pump body 1 including a pump shaft 11 and an impeller 12, the impeller 12 including a mounting hole 121; a force measuring mechanism 2, the force measuring mechanism 2 comprising a shaft head 21 and a force measuring part 22, the force measuring part 22 being connected with the pump shaft 11, the shaft head 21 comprising a first end 211 and a second end 212, the first end 211 being connected with the force measuring part 22, the outer diameter of the shaft head 21 gradually decreasing from the first end 211 to the second end 212; the outline shape of the mounting hole 121 is matched with the outline shape of the shaft head 21, the impeller 12 is sleeved on the shaft head 21 through the mounting hole 121 and is in interference fit with the shaft head 21, and the shaft head 21 is used for adjusting the axial channeling of the impeller 12.
In the embodiment of the present invention, the shaft head 21 of the force measuring mechanism 2 may be connected to the force measuring portion 22 by a fastener such as a bolt, so that the force measuring mechanism 2 forms an integral structure, and meanwhile, the force measuring portion 22 of the force measuring mechanism 2 may also be connected to the pump shaft 11 by a fastener such as a bolt, and specifically, the force measuring portion 22 may be a torque meter. Moreover, the outer diameter of the shaft head 21 gradually decreases from the first end 211 to the second end 212 thereof, so that the shaft head 21 is cone-shaped, the mounting hole 121 of the impeller 12 may be cone-shaped, which is matched with the shaft head 21, and the taper of the mounting hole 121 may be the same as that of the shaft head 21, so as to facilitate the installation and cooperation of the impeller 12 on the shaft head 21.
The centrifugal pump provided by the embodiment of the invention comprises a force measuring mechanism 2, wherein the force measuring mechanism 2 comprises a force measuring part 22 connected with a pump shaft 11 and a shaft head 21 connected with the force measuring part 22, and an impeller 12 is connected with the shaft head 21 in an interference fit manner, and the shaft head 21 is in a cone shape due to the fact that the outer diameter of the shaft head 21 is gradually reduced from the first end 211 to the second end 212, so that the installation position of the impeller 12 on the shaft head 21 can be changed by changing the diameter of an installation hole 121 of the impeller 12, the axial running amount of the impeller 12 is adjusted, the relative position between the impeller 12 and a guide vane is met, shafts with different lengths are not required to be manufactured and assembled and disassembled, the operation is simple and convenient, the waste of materials is avoided, and the installation precision of the shaft is not influenced; moreover, the force measuring part 22 of the force measuring mechanism 2 is connected with the shaft head 21, namely, directly connected with the impeller 12 through the shaft head 21, so that the influence on the measuring result caused by the deformation of the pump shaft 11 is reduced, and the accuracy of the measuring result is improved.
The mounting position of the impeller 12 on the shaft head 21 of the dynamometer 2 can be determined by controlling the opening size of the lower side of the impeller 12, so that the flow lines required by the impeller 12 and the guide vanes are realized.
In order to facilitate the derivation of the measurement data of the force measuring section 22, in an alternative embodiment, see fig. 1, the pump body 1 further comprises an electrically conductive slip ring 13, which electrically conductive slip ring 13 comprises an inner ring and an outer ring in rotational connection with the inner ring; the inner ring is sleeved on the pump shaft 11 and rotates along with the rotation of the pump shaft 11; a mounting channel 111 is arranged in the pump shaft 11; the force measuring section 22 is electrically connected to the inner ring by a wire, which is provided in the mounting channel 111.
In the above embodiment, the force measuring part 22 is electrically connected with the inner ring of the conductive slip ring 13 through the wire, so that the data measured by the force measuring part 22 can be transmitted to the outer ring through the wire and the inner ring, and the data can be transmitted to the pump body 1 through the outer ring, so that the structure is simple and the use is reliable.
In the above embodiment, the pump body 1 is provided with the mounting channel 111, one end of the mounting channel 111 may penetrate through the end face of the pump shaft 11, and the other end of the mounting channel 111 may penetrate through the surface of the pump shaft 11, so as to realize that the force measuring portion 22 is electrically connected with the inner ring of the conductive slip ring 13 through a wire.
Of course, the derivation of the measurement data of the force measuring portion 22 is not limited to the above manner, and in an alternative embodiment, the force measuring mechanism 2 further includes a wireless communication module, which is electrically connected to the force measuring portion 22, and is used for wireless connection with the outside.
In the above embodiment, the wireless communication module may be a wireless fidelity module and/or a bluetooth module, so that the force measuring mechanism 2 can be wirelessly connected with external equipment, thereby implementing that the measurement data is transmitted out of the pump body 1.
In an alternative embodiment, referring to fig. 1, the pump body 1 further includes a guide vane 14, and the guide vane 14 is sleeved on the periphery of the impeller 12; the load cell 2 further comprises a seal 23, the seal 23 being connected to the stub shaft 21 and the load cell 22, respectively, the stub shaft 21 and the load cell 22 being rotatably connected to the vane 14 via the seal 23.
In the above described embodiments, the seal 23 may be a labyrinth seal, and by providing the seal 23, a seal between the load cell 2 and the guide vane 14 may be achieved.
In an alternative embodiment, see fig. 1, the pump body 1 further comprises a housing 15, the guide vanes 14 being connected to the housing 15, the impeller 12 and the guide vanes 14 being located outside the housing 15; the load cell 2 is located outside the housing 15.
In the above embodiment, the force measuring mechanism 2 is located at the outer side of the housing 15, and components in the housing 15 are not required to be disassembled and assembled when the force measuring mechanism 2 is installed and maintained, so that the force measuring mechanism 2 is convenient to install and maintain, and the working efficiency is improved.
At present, when the hydraulic component is replaced, the pump body 1 and the driving part are usually required to be removed in a lifting manner so as to expose the hydraulic component for replacement, so that a larger lifting space, a crane and other devices are required to be provided, the devices have a larger collision risk in the lifting process, and the devices need to be leveled and centered again in the reassembly process, and a larger installation precision risk exists in the process, so that in order to solve the technical problem, in an alternative embodiment, referring to fig. 2 and 3, the centrifugal pump further comprises a driving part 3, such as a motor, and an output shaft of the driving part 3 is connected with the pump shaft 11; a fixed platform 4, the fixed platform 4 is provided with a pump shell 5, and the pump shell 5 is provided with a mounting port 51; a moving platform 6, the moving platform 6 is movably arranged on the fixed platform 4 along the direction towards or away from the mounting opening 51; the pump body 1 and the driving part 3 are provided on the moving platform 6, and the pump housing 5, the pump body 1 and the driving part 3 are coaxially provided with the impeller 12 facing the mounting port 51.
In the above embodiment, when the hydraulic components such as the impeller 12 and the guide vane 14 are replaced, the moving platform 6 may be moved, so that the moving platform 6 drives the pump body 1 and the driving part 3 to move in a direction away from the mounting opening 51 of the pump housing 5, thereby exposing the hydraulic components, and at this time, the hydraulic components may be replaced; after the hydraulic component is replaced, the moving platform 6 may be moved reversely, so that the moving platform 6 drives the pump body 1 and the driving part 3 to move toward the mounting hole 121 of the pump housing 5 until the hydraulic component is mounted into the pump housing 5.
In the process, the pump body 1 and the driving part 3 are moved by the movement of the movable platform 6 on the fixed platform 4, the pump body 1 and the driving part 3 do not need to be moved in a hoisting mode, hoisting space, a crane and other equipment are not needed to be provided for hoisting the pump body 1 and the driving part 3, the operation is simpler and more convenient, and meanwhile, the collision risk of the equipment in the hoisting process is avoided; moreover, because the pump shell 5 on the fixed platform 4 and the pump body 1 and the driving part 3 on the movable platform 6 are coaxially arranged, the purpose that after the hydraulic component is replaced, leveling and centering are not needed again, only the movable platform 6 is required to be moved for installation is achieved, and the installation accuracy of the centrifugal pump is ensured.
The moving platform 6 may be disposed on the fixed platform 4 in various manners, so long as the moving platform 6 can move smoothly along the preset direction relative to the fixed platform 4. In an alternative embodiment, referring to fig. 2 and 3, the fixed platform 4 may be provided with a rail 41, and the rail 41 may extend along the length direction of the fixed platform 4; the moving platform 6 is provided with a roller 61, and the roller 61 is in rolling connection with the track 41. Further, in order to ensure smooth movement of the mobile platform 6, the rail 41 may include a first rail and a second rail disposed opposite to each other, and the roller 61 may include a plurality of first rollers disposed at intervals on one side of the mobile platform 6 and a plurality of second rollers disposed at intervals on the other side of the mobile platform 6, the first rollers being in rolling connection with the first rail, and the second rollers being in rolling connection with the second rail.
In an alternative embodiment, see fig. 2 and 3, the pump body 1 is arranged on the mobile platform 6 by means of a first rest plate 7; the driving part 3 is provided on the moving platform 6 through a second placing plate 8. Wherein, the first board 7 of placing and the board 8 of placing can cushion centrifugal pump in-process vibration that produces to avoid causing the damage of pump body 1, drive portion 3 or moving platform 6 and fixed platform 4, thereby prolong its life.
In an alternative embodiment, see fig. 2 and 3, the centrifugal pump further comprises an adjusting portion 9, which adjusting portion 9 is arranged on the second placement plate 8 for adjusting the mounting position of the driving portion 3 on the moving platform 6.
In order to ensure that the pump body 1 and the driving part 3 can be concentric, the position of the driving part 3 can be finely adjusted by the adjusting part 9 when the driving part 3 is installed, and the driving part 3 is fixed after the driving part 3 is coaxial with the pump body 1, so that the installation accuracy of the centrifugal pump can be better ensured.
In an alternative embodiment, referring to fig. 2 and 3, the adjusting part 9 includes a fixing member 91 and an adjusting bolt 92, a threaded hole is provided on the fixing member 91, the adjusting bolt 92 is screwed into the threaded hole, and the adjusting bolt 92 abuts against the base of the driving part 3; the number of the fixing pieces 91 and the number of the adjusting bolts 92 are at least two, and the at least two adjusting bolts 92 are correspondingly connected in threaded holes of the at least two fixing pieces 91 in a threaded manner; the number of the adjusting parts 9 is at least four, and are arranged in pairs opposite to each other.
According to the embodiment, when the driving part 3 is installed, the adjusting bolts 92 in all directions of the adjusting part 9 can be screwed, so that the adjusting bolts 92 push the driving part 3 to finely adjust the position of the driving part 3 until the position of the driving part 3 is determined, and then the driving part 3 is fixed, so that the operation is convenient and the installation accuracy is high.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A centrifugal pump, comprising:
the pump comprises a pump body and an impeller, wherein the impeller comprises a mounting hole;
the shaft head comprises a first end and a second end, the first end is connected with the force measuring part, and the outer diameter of the shaft head gradually decreases from the first end to the second end;
the profile shape of the mounting hole is matched with that of the shaft head, the impeller is sleeved on the shaft head through the mounting hole and is in interference fit with the shaft head, and the shaft head is used for adjusting the axial channeling of the impeller;
the pump body further comprises a guide vane, and the guide vane is sleeved on the periphery of the impeller;
the pump body further comprises a shell, the guide vane is connected with the shell, and the impeller and the guide vane are positioned on the outer side of the shell; the force measuring mechanism is positioned on the outer side of the shell;
the centrifugal pump further includes:
the output shaft of the driving part is connected with the pump shaft;
the device comprises a fixed platform, wherein a pump shell is arranged on the fixed platform and is provided with an installation opening;
the movable platform is movably arranged on the fixed platform along the direction towards or away from the mounting port;
the pump body and the driving part are arranged on the moving platform, the pump shell, the pump body and the driving part are coaxially arranged, and the impeller faces the mounting opening.
2. A centrifugal pump according to claim 1, wherein,
the pump body further comprises a conductive slip ring, wherein the conductive slip ring comprises an inner ring and an outer ring rotationally connected with the inner ring; the inner ring is sleeved on the pump shaft;
a mounting channel is arranged in the pump shaft;
the force measuring part is electrically connected with the inner ring through a wire, and the wire is arranged in the mounting channel.
3. A centrifugal pump according to claim 1, wherein,
the force measuring mechanism further comprises a wireless communication module, wherein the wireless communication module is electrically connected with the force measuring part and is used for being connected with external equipment in a wireless mode.
4. A centrifugal pump according to claim 1, wherein,
the force measuring mechanism further comprises a sealing piece, the sealing piece is connected with the shaft head and the force measuring part respectively, and the shaft head and the force measuring part are rotatably connected with the guide vane through the sealing piece.
5. A centrifugal pump according to claim 1, wherein,
the fixed platform is provided with a track;
the mobile platform is provided with rollers, and the rollers are in rolling connection with the rails.
6. A centrifugal pump according to claim 1, wherein,
the pump body is arranged on the mobile platform through a first placing plate;
the driving part is arranged on the mobile platform through a second placing plate.
7. The centrifugal pump of claim 6, further comprising:
and the adjusting part is arranged on the second placing plate and used for adjusting the mounting position of the driving part on the moving platform.
8. The centrifugal pump according to claim 7, wherein,
the adjusting part comprises a fixing piece and an adjusting bolt, a threaded hole is formed in the fixing piece, the adjusting bolt is connected in the threaded hole in a threaded mode, and the adjusting bolt is abutted to the base of the driving part;
the number of the fixing pieces and the number of the adjusting bolts are at least two respectively, and the at least two adjusting bolts are correspondingly connected in threaded holes of the at least two fixing pieces in a threaded manner;
the number of the adjusting parts is at least four, and the adjusting parts are oppositely arranged in pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111565631.4A CN114135490B (en) | 2021-12-20 | 2021-12-20 | Centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111565631.4A CN114135490B (en) | 2021-12-20 | 2021-12-20 | Centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114135490A CN114135490A (en) | 2022-03-04 |
| CN114135490B true CN114135490B (en) | 2024-01-19 |
Family
ID=80382958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111565631.4A Active CN114135490B (en) | 2021-12-20 | 2021-12-20 | Centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114135490B (en) |
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| CN212563652U (en) * | 2020-05-14 | 2021-02-19 | 大连元坤机械设备有限公司 | Chemical centrifugal pump capable of being rapidly disassembled |
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2021
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| CN101254492A (en) * | 2007-03-02 | 2008-09-03 | 上海市南洋模范中学 | Solar fountain |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114135490A (en) | 2022-03-04 |
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