CN114738289A - Self-balancing heavy-load stainless steel magnetic pump - Google Patents
Self-balancing heavy-load stainless steel magnetic pump Download PDFInfo
- Publication number
- CN114738289A CN114738289A CN202210366249.9A CN202210366249A CN114738289A CN 114738289 A CN114738289 A CN 114738289A CN 202210366249 A CN202210366249 A CN 202210366249A CN 114738289 A CN114738289 A CN 114738289A
- Authority
- CN
- China
- Prior art keywords
- pump
- balancing
- self
- stainless steel
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/50—Bearings
- F05D2240/51—Magnetic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of magnetic pumps, in particular to a self-balancing heavy-duty stainless steel magnetic pump which comprises a base, a pump body, a sealing cylinder, a motor and a pump cover, wherein the motor and the pump body are fixed on the base; according to the invention, the covered area of the balance hole can be changed by changing the axial position of the rotor part of the impeller, so that the pressure of the balance cavity is automatically influenced, the axial force is really self-balanced through hydraulic power, and based on the self-balancing design, the bearing of the magnetic pump and the thrust disc have almost no friction and are close to zero load, thereby effectively ensuring the stable operation and the service life of the pump.
Description
Technical Field
The invention relates to the technical field of magnetic pumps, in particular to a self-balancing heavy-load stainless steel magnetic pump.
Background
The stainless steel magnetic pump has the advantages of full sealing, no leakage, high efficiency, energy saving, cleanness, environmental protection, low noise, low vibration and the like, and is the best choice for conveying flammable, explosive, corrosive and valuable liquid. Therefore, the conveying device is widely applicable to various fields of medicine, pesticide, petroleum, chemical engineering, alkali making, paper making, dye, electron, sewage treatment and the like, and is an ideal conveying device for mediums such as alkali liquor, alcohols, various organic solvents and the like. The magnetic pump can also adopt a heavy-load structural design, and can convey materials under special working conditions of high specific gravity, high viscosity, high temperature, low temperature and the like.
The main principle of the magnetic pump is that the motor drives the outer magnetic coupling, and the magnetic field passes through the isolating sleeve to indirectly drive the inner rotor, so that the impeller is driven to rotate, and the purpose of actual leakage-free conveying is achieved. The whole pump is designed by adopting a building block principle, any shaft seal device is not needed, the pump has the characteristic of no leakage completely, the installation and the maintenance are convenient, and all wearing parts can be maintained and replaced on site.
When a stainless steel magnetic pump in the prior art runs, because the internal pressure of a pump cavity changes along with the change of pump parameters, an impeller is always in a floating state, and a common magnetic pump only adopts a thrust disk to block friction to carry out rough blocking on axial force, so that the stable running and the service life of the pump can be seriously influenced; in addition, the heat of the operation part can not be taken away in time, the vaporization risk inside the isolation sleeve can be increased, and the service life of the pump can be seriously influenced.
Disclosure of Invention
The invention designs a self-balancing heavy-duty stainless steel magnetic pump aiming at the problems brought forward by the background technology.
The invention is realized by the following technical scheme:
a self-balancing heavy-duty stainless steel magnetic pump comprises a base, a pump body, a sealing cylinder, a motor and a pump cover, wherein the motor and the pump body are fixed on the base, the pump body, the sealing cylinder and the motor are sequentially fixed through bolts from left to right, the inner wall of a port at the right side of the pump body is fixedly provided with the pump cover, the pump cover is rotatably installed inside the pump cover through a pair of bearing assemblies, the outer wall of the left half section of the pump shaft is fixedly provided with an axial force balancing device, the left end of the pump shaft is fixedly provided with an impeller, the right end of the pump shaft is fixedly provided with an inner rotor, the output end at the left side of the motor is fixedly provided with an outer magnetic coupling, and the outer magnetic coupling and the inner rotor are coaxially arranged;
the axial force balancing device comprises a balancing disc, a balancing seat, a double-opening ring and a pressure accumulation cavity, the double-opening ring is fixed to the right side wall of the balancing disc, the balancing disc is fixed to the right side wall of the impeller, the balancing seat is arranged between the balancing disc and the pump cover, and the pressure accumulation cavity is formed by a gap between the impeller and the balancing seat.
As a further improvement of the scheme, a plurality of balance holes distributed circumferentially are formed in the balance disc and are communicated with the pressure accumulation cavity.
As a further improvement of the scheme, a stepped mounting hole is formed in the left side face of the pump cover, a circular groove is formed in an outer port of the stepped mounting hole, and a plurality of anti-cavitation loop holes are uniformly formed in the outer circumference of the circular groove.
As a further improvement of the scheme, the left and right supporting parts of the pump shaft are protected by shaft sleeves, the outer ends of the shaft sleeves are provided with thrust disks, and the shaft sleeves, the bearing assemblies and the thrust disks are all made of pressureless sintered silicon carbide.
As a further improvement of the scheme, an isolation sleeve is further arranged between the outer magnetic coupling and the inner rotor, and the left end of the isolation sleeve is fixed with the pump cover.
As a further improvement of the scheme, a sealing ring is arranged at the joint of the isolation sleeve and the pump cover, and the sealing ring is also arranged at the joint of the pump body and the pump cover.
As the further improvement of the scheme, the left end of the pump body is communicated with a water inlet pipe, the top end of the pump body is communicated with a water outlet pipe, and the water inlet pipe and the outer port of the water outlet pipe are both fixed with a flange plate.
As a further improvement of the above scheme, when the temperature of the medium conveyed in the pump body is below 120 ℃, the outer magnet coupling and the inner rotor are both made of neodymium-iron-boron magnet, and when the temperature of the medium conveyed in the pump body is 120-350 ℃, the outer magnet coupling and the inner rotor are both made of high-temperature-resistant samarium-cobalt magnet.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a self-balancing axial force balancing device, which comprises a balancing disc, a balancing seat, a double-opening ring and a pressure accumulation cavity, wherein the axial force is automatically balanced by utilizing hydraulic power, a throttling device is formed by an inner ring and an outer ring of the double-opening ring when a pump runs, a balancing hole on the balancing disc is a control valve passing through the pressure accumulation cavity, the covered area of the balancing hole can be changed along with the change of the axial position of an impeller rotor component, so that the pressure of the balancing cavity is automatically influenced, the axial force realizes real self-balancing through the hydraulic power, and a bearing of a magnetic pump and a thrust disc almost have no friction and are close to zero load by utilizing the self-balancing design, thereby effectively ensuring the stable running and the service life of the pump.
2. The invention designs a reasonable circulation loop and controls the flow of the circulation liquid, so that the heat of the operation parts is taken away, the temperature rise of the circulation liquid is reduced, the temperature rise of the circulation liquid is controlled within 3-5 ℃, the risk of vaporization inside the isolation sleeve is reduced, and the service life is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a perspective view of a first perspective of the present invention;
FIG. 2 is a perspective view of a second embodiment of the present invention;
FIG. 3 is a schematic view of a half-section structure of a pump body, a pump cover and a sealing cylinder assembly according to the present invention;
FIG. 4 is a schematic perspective view of an impeller with a balancing disk according to the present invention;
FIG. 5 is a schematic perspective view of a balancing seat according to the present invention;
fig. 6 is a schematic perspective view of a pump cover coupled to an axial force balancing device according to the present invention.
The pump comprises a base 1, a pump body 2, a water inlet pipe 201, a water outlet pipe 202, a flange plate 203, a sealing cylinder 3, a motor 4, a pump cover 5, a stepped mounting hole 501, a circular groove 502, a cavitation-resistant loop hole 503, a pump shaft 6, an axial force balancing device 7, a balance disc 701, a balance seat 702, a double-opening ring 703, a pressure accumulation cavity 704, a balance hole 705, an impeller 8, an inner rotor 9, an outer magnetic coupling 10, a shaft sleeve 11, a thrust disc 12, a spacer sleeve 13 and a bearing assembly 14.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all 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 application.
The invention is further illustrated with reference to figures 1-6.
A self-balancing heavy-duty stainless steel magnetic drive pump, as shown in fig. 1, fig. 2 and fig. 3, includes the base 1, the pump body 2, the sealing cylinder 3, the motor 4 and the pump cover 5, the motor 4 and the pump body 2 are all fixed on the base 1, the pump body 2, the sealing cylinder 3, the motor 4 three are fixed by the bolt from left to right in turn, the pump cover 5 is fixed on the inner wall of the port on the right side of the pump body 2, the pump shaft 6 is installed in the pump cover 5 through a pair of bearing assemblies 14 rotation, therefore the clearance between the pump shaft 6 and the bearing assemblies 14 is very small, the single side has only 0.02mm clearance, the coaxiality is extremely high, the operation is stable and has no vibration and noise; an axial force balancing device 7 is fixed on the outer wall of the left half section of the pump shaft 6, an impeller 8 is fixedly installed at the left end of the pump shaft 6, an inner rotor 9 is fixedly installed at the right end of the pump shaft 6, an outer magnetic coupling 10 is fixed at the left output end of the motor 4, and the outer magnetic coupling 10 is sleeved outside the inner rotor 9 and is coaxially arranged with the inner rotor 9; an isolation sleeve 13 is arranged between the outer magnetic coupling 10 and the inner rotor 9, the left end of the isolation sleeve 13 is fixed with the pump cover 5, the isolation sleeve is made of stainless steel (titanium, Hastelloy materials and the like can be adopted under special working conditions), and magnetic eddy current can be greatly reduced; a sealing ring is arranged at the joint of the isolation sleeve 13 and the pump cover 5, and the sealing ring is also arranged at the joint of the pump body 2 and the pump cover 5, so that the sealing property can be further improved due to the arrangement of the sealing ring; the left and right side support positions of the pump shaft 6 are protected by the shaft sleeve 11, the outer end of the shaft sleeve 11 is provided with the thrust disc 12, the shaft sleeve 11, the bearing assembly 14 and the thrust disc 12 are made of pressureless sintered silicon carbide, the traditional hot charging process is omitted, the processing precision is improved, transition fit is adopted, and axial limitation is arranged, so that the universality of parts is enhanced, the sale and maintenance cost is lower, and the replacement is convenient.
As shown in fig. 1 and fig. 2, the left end of the pump body 2 is communicated with a water inlet pipe 201, the top end of the pump body 2 is communicated with a water outlet pipe 202, the outer ports of the water inlet pipe 201 and the water outlet pipe 202 are both fixed with a flange 203, and the arrangement of the flange 203 is convenient for the connection between the water inlet pipe 201 and the water outlet pipe 202 with an external water pipeline.
As shown in fig. 3 and 6, the left side surface of the pump cover 5 is provided with a stepped mounting hole 501, the outer port of the stepped mounting hole 501 is provided with a circular groove 502, and the outer circumference of the circular groove 502 is uniformly provided with a plurality of anti-cavitation loop holes 503, so that the heat of the operation parts is taken away by using a reasonable circulation loop and circulation liquid flow control, the temperature rise of the circulation liquid is reduced, the temperature rise of the circulation liquid is controlled within 3-5 ℃, the risk of vaporization inside the isolation sleeve is reduced, and the service life is prolonged.
As shown in fig. 3, 4, and 5, the axial force balancing device 7 includes a balancing disk 701, a balancing seat 702, a double-ported ring 703, and a pressure accumulation cavity 704, the double-ported ring 703 is fixed to a right sidewall of the balancing disk 701, the balancing disk 701 is fixed to a right sidewall of the impeller 8, the balancing seat 702 is disposed between the balancing disk 701 and the pump cover 5, and a gap between the impeller 8 and the balancing seat 702 forms the pressure accumulation cavity 704; the balance disc 701 is provided with a plurality of balance holes 705 distributed circumferentially, and the balance holes 705 are communicated with the pressure accumulation cavity 704.
As shown in fig. 3, the temperature of the medium conveyed in the pump body 2 is below 120 ℃, and the outer magnetic coupling 10 and the inner rotor 9 are made of neodymium iron boron magnetic materials; when the temperature of the conveying medium in the pump body 2 is 120-350 ℃, the outer magnetic coupling 10 and the inner rotor 9 are made of high-temperature-resistant samarium-cobalt magnetic materials.
The working principle of the invention is as follows: firstly, a stainless steel magnetic pump is powered on, then the motor 4 works and drives the outer magnetic coupling 10 to rotate, the outer magnetic coupling 10 is sleeved outside the inner rotor 9 and is coaxially arranged with the inner rotor 9, a magnetic field penetrates through the isolation sleeve 13 and indirectly drives the inner rotor 9, the inner rotor 9 is connected with the impeller 8 through the pump shaft 6, and then the impeller 8 can be driven to rotate, so that the purpose of conveying liquid without leakage is achieved; the invention converts the easy-leakage dynamic sealing structure into the zero-leakage static sealing structure, and the pump shaft 6 and the inner rotor 9 are completely sealed by the pump body 2 and the isolation sleeve 13, thereby thoroughly solving the problems of 'running, overflowing, dripping and leaking'. The invention is suitable for a plurality of fields of medicine, pesticide, petroleum, chemical industry, alkali making, paper making, dye, electron, sewage treatment and the like, and is ideal conveying equipment for mediums such as alkali liquor, alcohols, various organic solvents and the like.
In addition, through a unique axial force balance design, the axial force balance device 7 comprises a balance disc 701, a balance seat 702, a double-opening ring 703 and a pressure accumulation cavity 704, the axial force is automatically balanced by utilizing hydraulic power, when the pump runs, a throttling device is formed by an inner ring and an outer ring of the double-opening ring 703, a balance hole 705 on the balance disc 701 is a 'control valve' passing through the pressure accumulation cavity 704, and the covered area of the balance hole 705 can be changed along with the change of the axial position of the rotor part of the impeller, so that the pressure of the balance cavity 704 is automatically influenced; for example, when the rotor part of the impeller deviates towards the suction port, the opening degree of the "control valve" automatically increases, the overflow of the balancing hole 705 increases, the pressure of the balancing cavity 704 decreases, the pressure acting on the rear cover plate of the impeller 8 decreases, the pressure of the front cover plate does not change, the thrust direction changes at the moment, and the rotor part of the impeller returns to the balancing position, and vice versa. Finally, the axial force can realize real self-balance through water power, the self-balance design is utilized, so that the magnetic pump bearing and the thrust disc have almost no friction, the bearing is close to zero load, and the stable operation and the service life of the pump are effectively guaranteed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a self-balancing heavy-duty stainless steel magnetic pump, includes base (1), the pump body (2), a sealed section of thick bamboo (3), motor (4) and pump cover (5), motor (4) with the pump body (2) all are fixed in on base (1), the pump body (2) a sealed section of thick bamboo (3) motor (4) three is turned right by a left side and is fixed its characterized in that in proper order through the bolt: the pump cover (5) is fixed on the inner wall of the right-side port of the pump body (2), a pump shaft (6) is rotatably installed inside the pump cover (5) through a pair of bearing assemblies (14), an axial force balancing device (7) is fixed on the outer wall of the left half section of the pump shaft (6), an impeller (8) is fixedly installed on the left end of the pump shaft (6), an inner rotor (9) is fixedly installed on the right end of the pump shaft (6), an outer magnetic coupling (10) is fixed on the left-side output end of the motor (4), and the outer magnetic coupling (10) and the inner rotor (9) are coaxially arranged;
the axial force balancing device (7) comprises a balancing disk (701), a balancing seat (702), a double-opening ring (703) and a pressure accumulation cavity (704), wherein the double-opening ring (703) is fixed to the right side wall of the balancing disk (701), the balancing disk (701) is fixed to the right side wall of the impeller (8), the balancing seat (702) is arranged between the balancing disk (701) and the pump cover (5), and a gap between the impeller (8) and the balancing seat (702) forms the pressure accumulation cavity (704).
2. The self-balancing heavy-duty stainless steel magnetic pump according to claim 1, characterized in that: a plurality of balance holes (705) distributed circumferentially are formed in the balance disc (701), and the balance holes (705) are communicated with the pressure storage cavity (704).
3. The self-balancing heavy-duty stainless steel magnetic pump of claim 1, characterized in that: the left side surface of the pump cover (5) is provided with a stepped mounting hole (501), an outer port of the stepped mounting hole (501) is provided with a circular groove (502), and the outer circumferential edge of the circular groove (502) is uniformly provided with a plurality of anti-cavitation loop holes (503).
4. The self-balancing heavy-duty stainless steel magnetic pump according to claim 3, characterized in that: the left and right side supporting parts of the pump shaft (6) are protected by shaft sleeves (11), the outer ends of the shaft sleeves (11) are provided with thrust plates (12), and the shaft sleeves (11), the bearing assemblies (14) and the thrust plates (12) are all made of pressureless sintered silicon carbide.
5. The self-balancing heavy-duty stainless steel magnetic pump according to claim 1, characterized in that: an isolation sleeve (13) is further arranged between the outer magnetic coupler (10) and the inner rotor (9), and the left end of the isolation sleeve (13) is fixed with the pump cover (5).
6. The self-balancing heavy-duty stainless steel magnetic pump according to claim 5, characterized in that: the sealing ring is arranged at the joint of the isolation sleeve (13) and the pump cover (5), and the sealing ring is also arranged at the joint of the pump body (2) and the pump cover (5).
7. The self-balancing heavy-duty stainless steel magnetic pump according to claim 1, characterized in that: the left end intercommunication of the pump body (2) has inlet tube (201), the top intercommunication of the pump body (2) has outlet pipe (202), inlet tube (201) with the outer port of outlet pipe (202) all is fixed with ring flange (203).
8. The self-balancing heavy-duty stainless steel magnetic pump according to claim 1, characterized in that: when the temperature of the conveying medium in the pump body (2) is below 120 ℃, neodymium iron boron magnetic materials are selected for the outer magnetic coupling (10) and the inner rotor (9), and when the temperature of the conveying medium in the pump body (2) is 120-350 ℃, high-temperature-resistant samarium cobalt magnetic materials are selected for the outer magnetic coupling (10) and the inner rotor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210366249.9A CN114738289A (en) | 2022-04-08 | 2022-04-08 | Self-balancing heavy-load stainless steel magnetic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210366249.9A CN114738289A (en) | 2022-04-08 | 2022-04-08 | Self-balancing heavy-load stainless steel magnetic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114738289A true CN114738289A (en) | 2022-07-12 |
Family
ID=82279048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210366249.9A Pending CN114738289A (en) | 2022-04-08 | 2022-04-08 | Self-balancing heavy-load stainless steel magnetic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114738289A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398486A (en) * | 2023-05-11 | 2023-07-07 | 兰州工业学院 | Magnetic drive pump with magnetism detects function |
-
2022
- 2022-04-08 CN CN202210366249.9A patent/CN114738289A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398486A (en) * | 2023-05-11 | 2023-07-07 | 兰州工业学院 | Magnetic drive pump with magnetism detects function |
| CN116398486B (en) * | 2023-05-11 | 2024-01-02 | 兰州工业学院 | Magnetic drive pump with magnetism detects function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5129795A (en) | Motor driven pump | |
| WO2020156089A1 (en) | Deep water pump having pressure compensation function | |
| CN103629118B (en) | A kind of riser permanent magnet shield pump | |
| CN217518869U (en) | Self-balancing heavy-duty stainless steel magnetic pump | |
| CN110762307B (en) | Magnetic fluid sealing rotary joint | |
| CN114738289A (en) | Self-balancing heavy-load stainless steel magnetic pump | |
| CN205533278U (en) | Novel high temperature magnetic drive pump | |
| US8905729B2 (en) | Rotodynamic pump with electro-magnet coupling inside the impeller | |
| CN211525117U (en) | High-frequency low-energy-consumption submersible electric pump | |
| CN104948469A (en) | Wear resistant corrosion resisting centrifugal pump | |
| CN204921382U (en) | Wear -resisting corrosion resisting centrifugal pump | |
| CN207892846U (en) | A kind of corrosion resistant magnetic force circulating pump | |
| CN116447143A (en) | Self-balancing heavy-duty stainless steel magnetic pump | |
| CN216589155U (en) | Permanent magnet bearing magnetic pump | |
| CN113137373A (en) | Magnetic suspension pump based on hydraulic balance principle | |
| CN210565294U (en) | Novel magnetic drive pump bearing connection structure | |
| CN212508849U (en) | Novel horizontal cantilever energy-saving two-stage pump | |
| CN212536077U (en) | Three-dimensional flow permanent magnet synchronous pipeline type centrifugal pump | |
| CN211059560U (en) | Magnetic fluid sealing rotary joint | |
| CN216077601U (en) | Corrosion-resistant canned motor pump | |
| CN215762222U (en) | Magnetic gear pump | |
| CN221322735U (en) | Magnetic drive pump capable of idling | |
| CN221568936U (en) | Vertical multistage magnetic pump with balanced axial force | |
| CN211950870U (en) | Two-stage double-suction volute type centrifugal pump | |
| CN218407884U (en) | Three-point bearing supporting structure of special pump for oil field long-distance pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |