CN107237760B - Vertical molten salt pump - Google Patents
Vertical molten salt pump Download PDFInfo
- Publication number
- CN107237760B CN107237760B CN201710675055.6A CN201710675055A CN107237760B CN 107237760 B CN107237760 B CN 107237760B CN 201710675055 A CN201710675055 A CN 201710675055A CN 107237760 B CN107237760 B CN 107237760B
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- China
- Prior art keywords
- impeller
- inducer
- main shaft
- pump
- liquid medium
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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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2238—Special flow patterns
- F04D29/225—Channel wheels, e.g. one blade or one flow channel
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
- F04D29/245—Geometry, shape for special effects
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a vertical molten salt pump, which comprises a rotating main shaft, an impeller arranged on the rotating main shaft, and an inducer detachably arranged at the bottom end of the rotating main shaft, wherein the inducer is positioned at the bottom of the impeller and synchronously rotates with the rotating main shaft, and a liquid discharge end of the inducer is communicated with a liquid inlet of the impeller. In the application process, the pump is started, the driving motor drives the rotary main shaft to rotate, the impeller starts to suck and discharge liquid medium in the tank body, and in the liquid level descending process, the liquid medium at the lower end of the impeller spirally rotates through the inducer, so that the liquid medium has certain propelling energy, the flow of sucking and discharging of the impeller is always kept constant, the problems of reduced lift, increased current of the driving motor and the like are avoided, and the working efficiency of the pump is improved. Meanwhile, cavitation erosion on the surface of the impeller is avoided, the service life of the impeller is influenced, the maintenance cost of the pump is effectively reduced, and the pump has good market application value.
Description
Technical Field
The invention relates to the technical field of electromechanical equipment, in particular to a vertical molten salt pump.
Background
Along with the development of the industrial technology of miners, the electromechanical equipment is updated and improved continuously, and a lava pump is required to be used for extracting lava raw materials, and the lava pump is used for extracting liquid media from the tank body.
The molten salt pumps are vertically arranged in the tank body, and the tank is filled with a medium with a certain liquid level. After the pump is started, the liquid level starts to move downwards, and the static pressure also starts to be changed from large to small due to the fact that the impeller of the pump sucks in liquid and discharges the liquid can have influence. Since the suction is insufficient, the amount of discharge is naturally affected, and cavitation is generated on the surface of the impeller, affecting the life of the impeller.
Therefore, how to improve the working efficiency of the pump is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide a vertical molten salt pump, which can ensure the flow stability of the pump, avoid the problems of reduced lift and increased current and improve the working efficiency of the pump.
In order to solve the technical problems, the invention provides a vertical molten salt pump, which comprises a rotating main shaft and an impeller arranged on the rotating main shaft, wherein an inducer is detachably arranged at the bottom end of the rotating main shaft and is positioned at the bottom of the impeller, the inducer and the rotating main shaft synchronously rotate, and a liquid discharge end of the inducer is communicated with a liquid inlet of the impeller.
Preferably, the top of the inducer is abutted to the shaft sleeve, and a lock nut is arranged at the bottom of the inducer.
Preferably, the inducer is provided with spiral blades.
Preferably, the spiral blade is provided with a diversion trench consistent with the rotation direction.
Preferably, the number of the diversion trenches is 2-8.
Preferably, the helical pitch of the helical blade is 0.2 to 0.5 times the blade diameter.
The invention provides a vertical molten salt pump, which mainly comprises a rotary main shaft, an impeller and an inducer. The rotary main shaft is connected with the output end of the driving motor, an impeller is arranged on the rotary main shaft, and the impeller sucks liquid medium in the tank body and discharges the liquid medium out of the tank body; an inducer is detachably arranged at the bottom end of the rotating main shaft and is positioned at the bottom of the impeller, the liquid discharge end of the inducer is communicated with the liquid inlet of the impeller, the inducer synchronously rotates along with the rotating main shaft, the inducer spirally rotates a liquid medium positioned at the lower end of the impeller through the inducer by utilizing a spiral propulsion principle, and the liquid medium has certain propulsion energy, so that the liquid medium is continuously and stably propelled to the liquid inlet of the impeller, and the suction and discharge flow of the impeller is always kept constant. In the application process, the pump is started, the driving motor drives the rotating main shaft to rotate, the impeller starts to suck and discharge liquid medium in the tank body, and when the liquid level descends, the liquid medium at the lower end of the impeller spirally rotates through the inducer, so that the liquid medium has certain propelling energy, the flow of sucking and discharging of the impeller is always kept constant, the problems of reduced lift, increased current of the driving motor and the like caused by static pressure of downward liquid level are avoided, and the working efficiency of the pump is improved. Meanwhile, cavitation erosion on the surface of the impeller is avoided, the service life of the impeller is influenced, the maintenance cost of the pump is effectively reduced, and the pump has good market application value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic overall structure of an embodiment of the present invention.
Wherein, in fig. 1:
the device comprises a rotary main shaft-1, an impeller-2, a liquid inlet-21, an inducer-3, a shaft sleeve-4 and a lock nut-5.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Referring to fig. 1, fig. 1 is a schematic overall structure of an embodiment of the present invention.
In one embodiment of the present invention, the vertical molten salt pump mainly includes a rotating main shaft 1, an impeller 2, and an inducer 3.
The rotary main shaft 1 is connected with the output end of the driving motor, an impeller 2 is arranged on the rotary main shaft 1, and the impeller 2 sucks liquid medium in the tank body and discharges the liquid medium out of the tank body; an inducer 3 is detachably arranged at the bottom end of the rotating main shaft 1, the inducer 3 is positioned at the bottom of the impeller 2, the liquid discharge end of the inducer 3 is communicated with the liquid inlet 21 of the impeller 2, the inducer 3 synchronously rotates along with the rotating main shaft 1, the inducer 3 spirally rotates a liquid medium positioned at the lower end of the impeller 2 through the inducer 3 by utilizing a spiral propulsion principle, and the liquid medium has certain propulsion energy, so that the liquid medium is continuously and stably propelled to the liquid inlet 21 of the impeller 2, and the constant flow sucked and discharged by the impeller 2 is always kept.
Specifically, in the application process, the pump is started, the driving motor drives the rotary main shaft 1 to rotate, the impeller 2 starts to suck and discharge liquid medium in the tank body, and when the liquid level descends, the liquid medium at the lower end of the impeller 2 spirally rotates through the inducer 3, so that the liquid medium has certain propulsion energy, the flow sucked and discharged by the impeller 2 is always kept constant, and the problems of reduced lift, increased driving motor current and the like caused by downward static pressure of the liquid level are avoided, thereby improving the working efficiency of the pump.
In order to optimize the detachable use of the inducer 3 in the above embodiment, a shaft sleeve 4 is provided on the rotating main shaft 1, one end of the shaft sleeve 4 is abutted against the impeller 2, the other end is abutted against the top of the inducer 3, and a lock nut 5 is provided at the bottom of the inducer 3, and the lock nut 5 secures the inducer 3 on the rotating main shaft 1, so that the inducer 3 can rotate synchronously with the rotating main shaft 1.
Further, the spiral blades are provided with diversion trenches consistent with the rotation direction, and the diversion trenches reduce the influence of the rotation centrifugal force on the liquid medium. The number of the optimized diversion trenches is 5-7, and the number of the diversion trenches can be designed and selected according to practical application requirements.
In order to optimize the drainage effect of the inducer 3 in the above embodiment, the spiral pitch of the spiral blade is 0.2-0.5 times of the diameter of the blade, so that the constant drainage amount of the inducer 3 and the larger flow value can be ensured, and the spiral pitch of the spiral blade can be calculated and selected according to actual requirements and an unfolding formula.
In a preferred embodiment of the inducer 3, the inducer 3 is provided with a spiral blade, and the spiral blade utilizes its own structural feature, and when the inducer 3 rotates with the rotating spindle 1, the spiral blade generates a spiral propelling movement, and the spiral blade drives the liquid medium to do a propelling movement, so that the liquid medium has a certain propelling energy, and the impeller 2 is guaranteed to continuously suck and discharge the liquid medium.
In summary, the vertical molten salt pump provided in this embodiment mainly includes the rotating main shaft 1, the impeller 2 and the inducer 3. The rotary main shaft 1 is connected with the output end of the driving motor, an impeller 2 is arranged on the rotary main shaft 1, and the impeller 2 sucks liquid medium in the tank body and discharges the liquid medium out of the tank body; an inducer 3 is detachably arranged at the bottom end of the rotating main shaft 1, the inducer 3 is positioned at the bottom of the impeller 2, the liquid discharge end of the inducer 3 is communicated with the liquid inlet 21 of the impeller 2, the inducer 3 synchronously rotates along with the rotating main shaft 1, the inducer 3 spirally rotates a liquid medium positioned at the lower end of the impeller 2 through the inducer 3 by utilizing a spiral propulsion principle, and the liquid medium has certain propulsion energy, so that the liquid medium is continuously and stably propelled to the liquid inlet 21 of the impeller 2, and the constant flow sucked and discharged by the impeller 2 is always kept. In the application process, the pump is started, the driving motor drives the rotary main shaft 1 to rotate, the impeller 2 starts to suck and discharge liquid medium in the tank body, and in the liquid level descending process, the liquid medium at the lower end of the impeller 2 spirally rotates through the inducer 3, so that the liquid medium has certain propelling energy, the flow sucked and discharged by the impeller 2 is always kept constant, and the problems of lift reduction, current increase of the driving motor and the like caused by static pressure of liquid level downward movement are avoided, thereby improving the working efficiency of the pump. Meanwhile, cavitation erosion on the surface of the impeller is avoided, the service life of the impeller is influenced, the maintenance cost of the pump is effectively reduced, and the pump has good market application value.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The utility model provides a vertical molten salt pump, its characterized in that, is in including rotatory main shaft (1), set up impeller (2) on rotatory main shaft (1) bottom detachably is provided with inducer (3), inducer (3) are located the bottom of impeller (2), just inducer (3) with rotatory main shaft (1) synchronous rotation, the flowing back end of inducer (3) with inlet (21) of impeller (2) communicate with each other, be provided with spiral blade on inducer (3), be provided with on the spiral blade and revolve the guiding gutter to unanimous, the guiding gutter is used for reducing liquid medium and receives rotatory centrifugal force influence.
2. The vertical molten salt pump of claim 1, wherein the inducer (3) is abutted against the shaft sleeve (4) at the top and a lock nut (5) is provided at the bottom of the inducer (3).
3. The vertical molten salt pump of claim 1 wherein the number of channels is 2 to 8.
4. A vertical molten salt pump according to any one of claims 1 to 3 wherein the helical pitch of the helical vane is 0.2 to 0.5 times the vane diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710675055.6A CN107237760B (en) | 2017-08-09 | 2017-08-09 | Vertical molten salt pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710675055.6A CN107237760B (en) | 2017-08-09 | 2017-08-09 | Vertical molten salt pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107237760A CN107237760A (en) | 2017-10-10 |
| CN107237760B true CN107237760B (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710675055.6A Active CN107237760B (en) | 2017-08-09 | 2017-08-09 | Vertical molten salt pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN107237760B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307164A (en) * | 2019-07-25 | 2019-10-08 | 中国船舶重工集团公司第七0四研究所 | Condensate pump flow passage components structure with inducer |
Citations (6)
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| GB362198A (en) * | 1930-01-11 | 1931-12-03 | Westinghouse Electric & Mfg Co | Improvements in or relating to screw propellers |
| TW595661U (en) * | 2002-12-03 | 2004-06-21 | Chen Lueng Entpr Co Ltd | Improved structure for blades of exhaust fan |
| CN204226272U (en) * | 2014-11-24 | 2015-03-25 | 威海力通通用机械有限公司 | A kind of draught fan impeller hub disk |
| EP2999495A1 (en) * | 2013-05-23 | 2016-03-30 | Reinheart GmbH | Impeller of a centrifugal pump apparatus |
| CN105545814A (en) * | 2016-01-07 | 2016-05-04 | 北京航空航天大学 | Spiral groove shell used for improving cavitation performance of inducer |
| CN205895688U (en) * | 2016-08-16 | 2017-01-18 | 台州锦霸工贸有限公司 | Impeller subassembly for well in immersible pump |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002155881A (en) * | 2000-11-22 | 2002-05-31 | Kubota Corp | Pump |
| US8550771B2 (en) * | 2009-08-03 | 2013-10-08 | Ebara International Corporation | Inducer for centrifugal pump |
| JP3156268U (en) * | 2009-09-11 | 2009-12-24 | サニタリーエンジニアリング株式会社 | Self-priming pump |
| CN102062107B (en) * | 2010-12-13 | 2012-08-29 | 甘肃银光聚银化工有限公司 | Multi-stage axial flow submerged pump with long shaft and method for conveying phosgene |
| US9562502B2 (en) * | 2014-10-06 | 2017-02-07 | Hamilton Sundstrand Corporation | Impeller for engine-mounted boost stage fuel pump |
| CN104454638A (en) * | 2014-11-19 | 2015-03-25 | 上海水泵制造有限公司 | Low-NPSHR centrifugal pump |
| CN207064258U (en) * | 2017-08-09 | 2018-03-02 | 重庆博张机电设备有限公司 | A kind of vertical pump for liquid salts |
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2017
- 2017-08-09 CN CN201710675055.6A patent/CN107237760B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB362198A (en) * | 1930-01-11 | 1931-12-03 | Westinghouse Electric & Mfg Co | Improvements in or relating to screw propellers |
| TW595661U (en) * | 2002-12-03 | 2004-06-21 | Chen Lueng Entpr Co Ltd | Improved structure for blades of exhaust fan |
| EP2999495A1 (en) * | 2013-05-23 | 2016-03-30 | Reinheart GmbH | Impeller of a centrifugal pump apparatus |
| CN204226272U (en) * | 2014-11-24 | 2015-03-25 | 威海力通通用机械有限公司 | A kind of draught fan impeller hub disk |
| CN105545814A (en) * | 2016-01-07 | 2016-05-04 | 北京航空航天大学 | Spiral groove shell used for improving cavitation performance of inducer |
| CN205895688U (en) * | 2016-08-16 | 2017-01-18 | 台州锦霸工贸有限公司 | Impeller subassembly for well in immersible pump |
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| Publication number | Publication date |
|---|---|
| CN107237760A (en) | 2017-10-10 |
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