CN110185628B - Multi-medium delivery pump - Google Patents
Multi-medium delivery pump Download PDFInfo
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- CN110185628B CN110185628B CN201910461122.3A CN201910461122A CN110185628B CN 110185628 B CN110185628 B CN 110185628B CN 201910461122 A CN201910461122 A CN 201910461122A CN 110185628 B CN110185628 B CN 110185628B
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- pump
- shell
- port
- rotor
- outer half
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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
- F04D13/0606—Canned motor pumps
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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
- F04D13/12—Combinations of two or more pumps
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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
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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
- F04D31/00—Pumping liquids and elastic fluids at the same time
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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
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a multi-medium delivery pump which comprises a pump shell, a stator, a rotor and pump blades, wherein the pump shell comprises a first pump port, a second pump port, a first outer half shell and a second outer half shell, the stator comprises a soft magnetic iron core group, a pump inner shell and a coil group, the pump blades are fixed on the inner periphery of the rotor, first sealing rings and bearings are installed at two ends of the rotor, the rotor is installed in the pump inner shell through the first sealing rings and the bearings, the soft magnetic iron core group is arranged on the outer periphery of the pump inner shell, and the coil group is installed on the outer periphery of the soft magnetic iron core group. The invention obviously improves the whole sealing performance of the delivery pump, achieves the purposes of leakage prevention and explosion prevention, and enables the delivery media to be wider, and has extremely high safety even if dangerous gas or liquid media are delivered.
Description
Technical Field
The invention belongs to the technical field of delivery pumps, and particularly relates to a multi-medium delivery pump capable of delivering different media.
Background
The pump is used as an important device for conveying fluid or pressurizing, is mainly used for conveying water, oil, acid liquor, alkali liquor and the like, and can also be used for conveying gas, liquid-gas mixture and liquid containing suspended solids. The existing delivery pump mainly comprises a motor, a pump blade and a machine shell, but because a rotating shaft of the motor is directly or indirectly connected with the pump blade, the rotating shaft cannot be absolutely sealed due to the rotation of the motor, and a wire part needs to be protected from being damaged due to contact with a delivery medium, the existing delivery pump can generally deliver a leaked safe medium, cannot complete safe delivery for some special media, and cannot particularly deliver dangerous gas media, liquid media with certain pressure and part of mixture media.
Although the prior art also has a delivery pump and a diaphragm pump with an external motor, generally speaking, a liquid delivery pump cannot be used for delivering gas, and a gas delivery pump cannot be used for delivering liquid. In addition, most of the delivery pumps in the prior art are used for delivering media in a single direction, namely, the rotating shaft of the motor is required to be in a fixed rotating direction.
In production practice, a delivery pump capable of delivering different mediums is needed, specifically, for example, hydrogen energy, which is one of the most promising new energy sources, is considered as the ultimate energy source of human beings because hydrogen fuel cell fuel is hydrogen and pure water is discharged after reaction to generate electricity, and high energy conversion ratio and cleanliness are increasingly regarded by energy application. Currently, there is a need for a pump for delivering a mixture of water, steam (about 60 c) and hydrogen (about 200kpa line pressure) to pressurize and promote the circulation of the mixture in a hydrogen fuel cell system. In the prior art, an electric diaphragm pump is mounted on a hydrogen fuel cell system, but due to the reasons of small flow, large and heavy pump volume, high cost, difficult guarantee of sealing property and the like, most manufacturers have to cancel the components, so that the hydrogen pulse discharge period is reduced, the hydrogen discharge amount is increased, the hydrogen reaction is insufficient, the power generation efficiency of the fuel cell system is reduced, and the like.
Therefore, it is an urgent technical problem for those skilled in the art to provide a multimedia delivery pump that can overcome the above disadvantages of the prior art.
Disclosure of Invention
The invention is provided to solve the technical problems in the prior art, and provides a multi-medium delivery pump, which comprises a pump shell, a stator, a rotor and a pump blade, wherein the pump shell comprises a first pump port, a second pump port, a first outer half shell and a second outer half shell, the stator comprises a soft magnetic iron core group, a pump inner shell and a coil group, the pump blade is fixed on the inner periphery of the rotor, a first sealing ring and a bearing are installed at two ends of the rotor, the rotor is installed in the pump inner shell through the first sealing ring and the bearing, the soft magnetic iron core group is arranged on the outer periphery of the pump inner shell, and the coil group is installed on the outer periphery of the soft magnetic iron core group.
Further, in the above-mentioned multi-medium delivery pump, the rotor is an annular permanent magnet rotor, and the pump blade is formed by a spiral turbofan.
Further, in the above-mentioned multi-medium delivery pump, both sides of the pump inner shell are inner shell flanges, a cylindrical portion is arranged between the inner shell flanges, the inner shell flanges are provided with a plurality of first screw holes along the circumferential direction, and the soft magnetic iron core group is arranged on the periphery of the cylindrical portion and integrated with the pump inner shell through an injection molding process.
Further, in the above-mentioned multi-media delivery pump, the first pump port and the second pump port each include a port flange and a pump joint, a plurality of second screw holes are provided in the circumferential direction of the port flange, and the pump joint is connected to the delivery pipe.
Further, in above-mentioned multi-media delivery pump, first outer half shell with be provided with a plurality of lugs on the outer peripheral face of second outer half shell, the lug is opened there is the third screw, first outer half shell with still be provided with a plurality of axially extended's installation muscle on the outer peripheral face of second outer half shell, the installation muscle is opened there is the screw.
Further, in the above-described multimedia delivery pump, a bolt is inserted into the third screw hole of the lug to fasten the first outer half shell and the second outer half shell to each other.
Further, in the above-mentioned multi-media delivery pump, the number and the aperture of the screw hole of the mounting rib, the second screw hole of the port flange and the first screw hole of the inner shell flange are the same and the setting positions are corresponding to each other.
Further, in the above-described multimedia delivery pump, the first outer half shell and the second outer half shell are mounted between the inner shell flanges at both side ends of the pump inner shell.
Further, in above-mentioned multi-media delivery pump, the second screw of port flange, the screw of installation muscle and the first screw of inner shell flange is inserted with the bolt and will first pump port and second pump port, first outer half shell and second outer half shell and the pump inner shell assembles each other.
Further, in the above multimedia delivery pump, one of the first outer half shell and the second outer half shell is provided with a wire insertion opening, one end of a wire is inserted into the wire insertion opening and butted against the coil assembly, and the other end of the wire is connected to an external power supply.
Further, in the above-mentioned multimedia delivery pump, a second seal ring is provided between the port flange and the inner shell flange.
Further, in the above-described multimedia delivery pump, the pump blade may be formed of a blade fan.
Further, in the above-mentioned multimedium delivery pump, first sealing washer with the second sealing washer chooses the silica gel sealing washer for use.
Further, in the above-mentioned multi-medium transfer pump, the bearing is a spherical roller bearing made of a non-metallic material such as graphite, nylon, or ceramic.
Further, in the above multimedia delivery pump, the pump joint is selected from a hose joint, a flange joint, a threaded joint, or a clamp joint.
The multi-medium delivery pump of the invention thoroughly solves the problem that the rotor can not be sealed absolutely when rotating, the electrified part of the stator and other electric parts of the delivery pump are completely isolated from the delivery medium, and the components that may come into direct contact with the transport medium include only the spiral turbofan as the pump blade, the annular permanent magnet rotor as the rotor, the inner wall of the cylindrical portion of the pump inner casing, the first seal ring, the bearing, and the first and second pump ports, in the concrete implementation, the components can be made of corresponding materials according to the physical and chemical properties of the medium, or the corresponding materials can be selected according to the physical and chemical properties of the medium to carry out plating treatment on the parts, thereby obviously improving the overall sealing property of the delivery pump and achieving the purposes of leakage prevention and explosion prevention, and the transportable media are made wider, and extremely high safety is provided even if the hazardous gas or liquid media are transported.
In addition, the overall volume of the multi-medium delivery pump is greatly reduced due to the compact structure of the multi-medium delivery pump, the mounting form is more diversified, and the multi-medium delivery pump is easy to replace and maintain. Particularly, on a conveying pipeline, the multi-medium conveying pump has stronger transformation and assembly performance, and can realize the serial or parallel use of multiple pump groups according to the actual use requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is an exploded perspective view of a multimedia delivery pump of the present invention.
Fig. 2 is a perspective view of the multimedia delivery pump of the present invention in an assembled state with portions cut away at 90 °.
Fig. 3 is a perspective view of the multimedia delivery pump of fig. 2 with the pump housing removed.
Fig. 4 is a half sectional view of the multimedia delivery pump shown in fig. 3.
Fig. 5 is a perspective view of a rotor of the multimedia delivery pump of the present invention.
Fig. 6(a) and 6(B) are schematic diagrams of serial application and parallel application of the multi-media delivery pump of the present invention, respectively.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, the multimedia delivery pump of the present invention comprises a pump housing, a stator, a rotor and a pump blade, wherein the pump housing comprises a first pump port 1 and a second pump port 12, a first outer half-shell 4 and a second outer half-shell 7, the stator comprises a soft magnetic iron core group 3, a pump inner shell 5 and a coil group 6, the rotor is formed by an annular permanent magnet rotor 10, and the pump blade is formed by a spiral turbofan 11.
The spiral turbofan 11 is fixed on the inner circumference of the annular permanent magnet rotor 10 and can rotate along with the annular permanent magnet rotor 10. The annular permanent magnet rotor 10 is mounted with a first seal ring 8 and a bearing 9 at both ends, whereby the annular permanent magnet rotor 10 is mounted inside the pump inner casing 5 via the first seal ring 8 and the bearing 9.
The pump inner casing 5 has inner casing flanges 51 at both side ends thereof, a cylindrical portion 52 between the inner casing flanges 51, and the inner casing flanges 51 and the cylindrical portion 52 may be formed as an integral structure. The inner shell flange 51 is circumferentially provided with a plurality of first screw holes 53, for example, three or four first screw holes 53. The soft magnetic core group 3 is disposed on the outer periphery of the cylindrical portion 52 of the pump inner casing 5, and the coil group 6 is mounted on the outer periphery of the soft magnetic core group 3.
The first pump port 1 and the second pump port 12 each include a port flange 13 and a pump joint 14, the port flange 13 is circumferentially provided with a plurality of second screw holes 15, and the pump joint 14 can be connected to a delivery pipe to perform delivery of a medium from the first pump port 1 to the second pump port 12 (or from the second pump port 12 to the first pump port 1).
A plurality of lugs 16 are arranged on the outer peripheral surfaces of the first outer half shell 4 and the second outer half shell 7, and the lugs 16 are provided with third screw holes 17. A plurality of mounting ribs 18 extending axially are further arranged on the outer peripheral surfaces of the first outer half shell 4 and the second outer half shell 7, and the mounting ribs 18 are provided with screw holes. The number and the diameter of the screw holes of the mounting ribs 18, the second screw holes 15 of the port flange 13 and the first screw holes 53 of the inner shell flange 51 are the same and the arrangement positions are corresponding to each other.
The first and second outer half shells 4 and 7 are mounted between the inner shell flanges 51 at both side ends of the pump inner shell 5, and the first and second outer half shells 4 and 7 are fastened to each other by inserting bolts (not shown) into the third screw holes 17 of the lugs 16. Further, the first and second pump ports 1 and 12, the first and second outer half shells 4 and 7, and the pump inner casing 5 are assembled with each other to form the delivery pump by inserting and fastening bolts (not shown) into the second screw holes 15 of the port flange 13, the screw holes of the mounting ribs 18, and the first screw holes 53 of the inner casing flange 51.
In addition, one of the first outer half-shell 4 and the second outer half-shell 7 is provided with a wire insertion opening, one end of a wire 19 is inserted into the wire insertion opening and can be butted against the coil assembly 6, and the other end of the wire 19 can be connected to an external power supply to supply power to the delivery pump.
Therefore, with the multi-media delivery pump of the present invention, after the lead 19 is connected to an external power source to supply power to the delivery pump, the current is converted into a magnetic field, the magnetic field force drives the annular permanent magnet rotor 10 to rotate under the support of the bearing 9, and the spiral turbofan 11 rotates along with the rotation, thereby delivering the delivery medium from the first pump port interface 1 to the second pump port interface 12. In addition, the external electric control box can change the rotation direction and the rotation speed of the spiral turbofan 11, so that the multi-medium delivery pump can realize reverse delivery, namely, the medium is delivered to the first pump end interface 1 from the second pump end interface 12, and the delivery flow of the medium is controlled.
Preferably, in the multimedia delivery pump of the present invention, the pump vane may be formed of other types of vane fans in addition to the spiral scroll fan 11.
Preferably, in order to further improve the overall sealing performance of the delivery pump, a second sealing ring 2 may be disposed between the port flange 13 and the inner shell flange 51.
Preferably, in the multimedia delivery pump of the present invention, the first sealing ring 8 and the second sealing ring 2 may be silica gel sealing rings.
In the multi-medium delivery pump of the present invention, the material and type of the bearing 9 may be determined according to the physicochemical properties of the delivery medium, and for example, a ball roller bearing made of non-metal material such as graphite, nylon, ceramic, etc. may be used.
Preferably, in the multimedia delivery pump of the present invention, the pump connector 14 connected to the delivery pipe can be a hose connector, but other types of connectors, such as a flange connector, a threaded connector, a clamp connector, etc., can be used according to actual use.
In the multi-medium delivery pump, as one of innovative improvements, the spiral turbofan 11 is fixed on the inner periphery of the annular permanent magnet rotor 10, so that the rotor and the pump blades are integrated into a whole, the pump blades rotate along with the rotor when the rotor rotates, a motor rotating shaft in the conventional technology is omitted, and accordingly the problem that absolute sealing cannot be achieved when the rotor rotates is thoroughly solved.
In the multimedia delivery pump of the present invention, as one of the innovative improvements, the soft magnetic core group 3 is integrated with the pump inner casing 5 by an injection molding process, thereby allowing the soft magnetic core group 3 to be fixed to the outer periphery of the cylindrical portion 52 of the pump inner casing 5. By the above measures, the cylindrical portion 52 of the pump inner casing 5 completely isolates the soft magnetic core group 3 and thus the coil group 6 from the transport medium, so that the energization portion of the stator does not directly contact the transport medium. As a specific embodiment, the injection molding material for integrally injecting the soft magnetic core group 3 and the pump inner shell 5 is selected to be water repellent and can resist certain air pressure.
In the multimedia delivery pump of the present invention, as one of the innovative improvements, the electric parts such as the lead wires 19 are butted against the coil assembly 6 through the lead wire insertion opening provided on one of the first outer casing half 4 and the second outer casing half 7, while the coil assembly 6 is installed on the outer periphery of the soft magnetic core assembly 3, and the cylindrical part 52 of the pump inner casing 5 completely isolates the soft magnetic core assembly 3 from the delivery medium as described above, and therefore, the electric parts of the delivery pump are completely isolated from the delivery medium.
In summary, the multimedia delivery pump of the present invention thoroughly solves the problem that the rotor cannot be sealed absolutely when rotating, the energization part of the stator and other electrical parts of the delivery pump are completely isolated from the delivery medium, and the components that may be in direct contact with the delivery medium only include the spiral turbofan 11 as the pump blade, the annular permanent magnet rotor 10 as the rotor, the inner wall of the cylindrical portion 52 of the pump inner housing 5, the first sealing ring 8, the bearing 9, and the first and second pump ports 1 and 12, in the specific implementation, the above components can be made of corresponding materials according to the physicochemical properties of the medium, or can be plated with corresponding materials according to the physicochemical properties of the medium, thereby significantly improving the overall sealing performance of the delivery pump, achieving the purposes of leakage prevention and explosion prevention, and making the deliverable media wider, even if dangerous gas or liquid medium is transported, the safety is extremely high.
In addition, the overall volume of the multi-medium delivery pump is greatly reduced due to the compact structure of the multi-medium delivery pump, the mounting form is more diversified, and the multi-medium delivery pump is easy to replace and maintain. Particularly, on a conveying pipeline, the multi-medium conveying pump has stronger reconstruction and assembly performance, and can realize series or parallel use of multiple pump groups according to actual use requirements, as shown in fig. 6(A) and 6 (B). The multi-medium delivery pump can be used as a hydrogen circulation pump group of a hydrogen fuel cell system by serial or parallel connection, so that the hydrogen circulation flow is remarkably increased, the hydrogen reaction is more sufficient, the hydrogen utilization rate is increased, and the power generation efficiency of the fuel cell system is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Moreover, in this document, relational terms such as "first," "second," and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Further, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", "top", "bottom", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience of describing the present invention and does not require that the present invention be constructed and operated in a particular orientation. Meanwhile, the terms "connected" and "connected" used herein should be interpreted broadly, and may be either fixedly connected or detachably connected, and may be directly connected or indirectly connected through intermediate components, and those skilled in the art may understand the specific meanings of the above terms according to specific situations.
It should be further noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and are not limited thereto; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or alterations do not depart from the spirit of the invention.
Claims (2)
1. A multi-medium delivery pump comprises a pump shell, a stator, a rotor and pump blades, and is characterized in that the pump shell comprises a first pump port, a second pump port, a first outer half shell and a second outer half shell, the stator comprises a soft magnetic iron core group, a pump inner shell and a coil group, wherein the pump blades are fixed on the inner periphery of the rotor, first sealing rings and bearings are installed at two ends of the rotor, the rotor is installed in the pump inner shell through the first sealing rings and the bearings, the soft magnetic iron core group is arranged on the outer periphery of the pump inner shell, and the coil group is installed on the outer periphery of the soft magnetic iron core group;
the rotor is an annular permanent magnet rotor, and the pump blade is composed of a spiral turbofan;
the soft magnetic iron core group is arranged on the periphery of the cylindrical part and is integrated with the pump inner shell through an injection molding process;
the first pump port and the second pump port respectively comprise a port flange and a pump connector, a plurality of second screw holes are formed in the circumferential direction of the port flange, and the pump connectors are connected to a conveying pipeline;
a plurality of lugs are arranged on the outer peripheral surfaces of the first outer half shell and the second outer half shell, the lugs are provided with third screw holes, a plurality of axially extending mounting ribs are further arranged on the outer peripheral surfaces of the first outer half shell and the second outer half shell, and the mounting ribs are provided with screw holes;
the number and the aperture of the screw holes of the mounting ribs, the second screw holes of the port flange and the first screw holes of the inner shell flange are the same, and the setting positions of the screw holes, the second screw holes of the port flange and the first screw holes of the inner shell flange are corresponding to each other;
the first outer half shell and the second outer half shell are installed between the inner shell flanges at two side ends of the pump inner shell;
one of the first outer half shell and the second outer half shell is provided with a lead wire jack, one end of a lead wire is inserted into the lead wire jack and butted with the coil group, and the other end of the lead wire is connected with an external power supply;
a second sealing ring is arranged between the port flange and the inner shell flange;
the spiral turbofan is directly contacted with a conveying medium, the annular permanent magnet rotor, the inner wall of the cylindrical part of the pump inner shell, the first sealing ring, the bearing, the first pump port and the second pump port are made of corresponding materials according to the physical and chemical properties of the medium, and the parts are plated by the corresponding materials according to the physical and chemical properties of the medium.
2. The multi-media transfer pump of claim 1, wherein the first and second seal rings are silica gel seal rings, the bearing is a spherical roller bearing made of graphite, nylon or ceramic, and the pump joint is a hose joint, a flange joint, a threaded joint or a clamp joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910461122.3A CN110185628B (en) | 2019-05-30 | 2019-05-30 | Multi-medium delivery pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910461122.3A CN110185628B (en) | 2019-05-30 | 2019-05-30 | Multi-medium delivery pump |
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| CN110185628A CN110185628A (en) | 2019-08-30 |
| CN110185628B true CN110185628B (en) | 2021-07-20 |
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| CN201910461122.3A Active CN110185628B (en) | 2019-05-30 | 2019-05-30 | Multi-medium delivery pump |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255689A (en) * | 2020-03-17 | 2020-06-09 | 烟台东德实业有限公司 | Hydrogen circulating pump with explosion-proof structure |
| CN115057171A (en) * | 2022-05-06 | 2022-09-16 | 大连海事大学 | Remote pipeline transportation device system |
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| CN101672286A (en) * | 2008-09-09 | 2010-03-17 | 蒋明兴 | Diving pump without dynamic seal component |
| CN107630838A (en) * | 2017-10-27 | 2018-01-26 | 西华大学 | A kind of helico-axial gas fluid mixture pump |
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| DE3417038C3 (en) * | 1984-05-09 | 1992-06-11 | Hermetic Pumpen Gmbh | Canned motor pump for pumping especially gas-laden liquids |
| CN1033535A (en) * | 1987-12-13 | 1989-06-28 | 李福琼 | Pump integrating electric motor with vane wheel |
| GB9022056D0 (en) * | 1990-10-10 | 1990-11-21 | Shell Int Research | Apparatus for compressing a fluid |
| CN2089539U (en) * | 1991-07-09 | 1991-11-27 | 北京市西城区新开通用试验厂 | Digital controlled water feeding pressure increasing screen pump |
| CN202152738U (en) * | 2011-06-24 | 2012-02-29 | 上海佳麟泵阀有限公司 | Zero leakage shielding magnetic force axial flow pump |
| CN103362829A (en) * | 2013-08-03 | 2013-10-23 | 浙江威格泵业有限公司 | Canned motor pump |
| EP3161320B1 (en) * | 2014-06-24 | 2021-02-24 | Sterling Industry Consult GmbH | Side channel pump |
| WO2017080591A1 (en) * | 2015-11-10 | 2017-05-18 | Pierburg Pump Technology Gmbh | Electric motor vehicle axial-flow liquid pump |
| CN108194430B (en) * | 2017-12-27 | 2020-02-04 | 合肥新沪屏蔽泵有限公司 | Side flow shielding pump for conveying gas-liquid mixed medium |
| CN109779921A (en) * | 2019-03-18 | 2019-05-21 | 李卿 | A kind of high pressure axial-flow pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672286A (en) * | 2008-09-09 | 2010-03-17 | 蒋明兴 | Diving pump without dynamic seal component |
| CN107630838A (en) * | 2017-10-27 | 2018-01-26 | 西华大学 | A kind of helico-axial gas fluid mixture pump |
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