CN115247650A - Full permanent magnetism suspension bearing magnetic drive pump - Google Patents
Full permanent magnetism suspension bearing magnetic drive pump Download PDFInfo
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- CN115247650A CN115247650A CN202210896582.0A CN202210896582A CN115247650A CN 115247650 A CN115247650 A CN 115247650A CN 202210896582 A CN202210896582 A CN 202210896582A CN 115247650 A CN115247650 A CN 115247650A
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- permanent magnet
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- pump
- suspension bearing
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- 239000000725 suspension Substances 0.000 title claims abstract description 126
- 230000005389 magnetism Effects 0.000 title claims description 7
- 238000002955 isolation Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000003068 static effect Effects 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 5
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229920006351 engineering plastic Polymers 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 238000012937 correction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000004809 Teflon Substances 0.000 description 6
- 229920006362 Teflon® Polymers 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 230000035922 thirst Effects 0.000 description 1
Images
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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
- F04D13/026—Details of the bearings
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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
- F04D13/0633—Details of the bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/0462—Bearing cartridges
-
- 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
- F04D29/046—Bearings
- F04D29/048—Bearings magnetic; electromagnetic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention relates to a full permanent magnet suspension bearing magnetic pump, which comprises a pump body, wherein an impeller is arranged on the inner side of the pump body, a pump cover is arranged on the right side of the impeller, a bearing control mechanism is arranged on the right side of the pump cover, an auxiliary bearing is arranged in the bearing control mechanism and is installed on a pump shaft, an axial permanent magnet suspension bearing is arranged on the right side of the auxiliary bearing, a radial permanent magnet suspension bearing is arranged on the right side of the axial permanent magnet suspension bearing, the upper end of the radial permanent magnet suspension bearing is connected with a bearing controller, a bearing seat is arranged outside the radial permanent magnet suspension bearing, a supporting device is arranged at the rightmost end of the bearing seat, a second radial permanent magnet suspension bearing is arranged on the pump shaft at the lower end of the supporting device, a second axial permanent magnet suspension bearing is arranged on the right side of the second axial permanent magnet suspension bearing, a second auxiliary bearing is arranged on the right side of the second auxiliary bearing, an inner magnet rotor is arranged on the right side of the second auxiliary bearing, an isolation sleeve is arranged on the outer side of the inner magnet rotor, an outer magnet rotor and a driving motor is arranged on the right side of the isolation sleeve.
Description
Technical Field
The invention relates to the technical field of magnetic suspension magnetic pumps, in particular to a full permanent magnetic suspension bearing magnetic pump.
Background
The magnetic pump is a fully-sealed pump type driven by the force of a permanent magnetic field, when a motor drives an outer magnetic rotor, the magnetic field penetrates through an air gap and an isolation sleeve to drive an inner magnetic rotor and an impeller to synchronously rotate, so that the non-contact transmission of power is realized, the magnetic pump is widely applied to the fields of petroleum, chemical industry, nuclear power, military industry and the like, and is highly popular with users for conveying inflammable, explosive, volatile corrosive and precious liquid in a sealed state;
however, the magnetic pump has long been a problem of low service life and high energy consumption, and meanwhile, because the friction heat of the sliding bearing for supporting the weight of the impeller and the rotor and the thrust ring for bearing the axial force of the impeller is used for lubricating and cooling by means of the circulation of the conveyed medium, if the system fails, the system is damaged quickly, and if the system fails, the equipment is seriously stopped by accident.
The grant notice number CN201710298845.7 discloses a magnetic pump with a magnetic suspension bearing, which comprises a pump body, an impeller, a permanent magnet thrust ring, a permanent magnet rotor, an electromagnetic bearing, a bearing positioning sleeve, a controller, a pump cover, a bearing seat, a connecting frame, a pump shaft, an outer magnet rotor, an isolating sleeve, an inner magnet rotor and a motor; the bearing seat is sleeved between the pump shaft and the connecting frame, and a first electromagnetic bearing and a second electromagnetic bearing are respectively arranged at two ends of the bearing seat; a first permanent magnet thrust ring, a first permanent magnet rotor, a second permanent magnet rotor and a second permanent magnet thrust ring are sequentially sleeved on the pump shaft; the two permanent magnet rotors are in a suspension state and never contact with the two electromagnetic bearings; two permanent magnetism thrust collars are in the suspended state to never contact with two electromagnetic bearing, realize having solved traditional magnetic drive pump's structural defect, make the pump in operation two pairs of friction of in-process characteristics such as contactless, frictionless wear have, need not lubricated, high rotational speed, thereby greatly improved magnetic drive pump's life, but this magnetic drive pump has following problem: firstly, under the working state of the magnetic pump, the impeller is subjected to certain force to destroy the perfect suspension state under the static state, the suspension effect is unstable, secondly, the impeller can receive rightward force in the rotating water absorption and discharge process, so that the pump shaft is loose, the inner magnetic rotor can be in rotating contact with the isolation sleeve, heat is generated, and the service life of the magnetic pump is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and the technical problems that the stability is poor, the friction heating condition is generated and the service life of the magnetic pump is shortened due to the fact that the impeller rotates under the action of force in a certain direction in the working process of the magnetic pump are solved by arranging the bearing controller on the outer side of the pump body to control the rotation of the inner bearing, so that non-contact and friction-free rotation is realized, and the magnetic block arranged on the isolation sleeve and the supporting device arranged on the bearing seat are utilized.
In order to achieve the purpose, the invention provides the following technical scheme:
a full permanent magnetic suspension bearing magnetic pump comprises a pump body, wherein an impeller is arranged on the inner side of the pump body, a pump cover is arranged on the right side of the impeller, and a bearing control mechanism is arranged on the right side of the pump cover;
the auxiliary bearing is arranged in the bearing control mechanism and is installed on the pump shaft, the axial permanent magnet suspension bearing is arranged on the right side of the auxiliary bearing, the radial permanent magnet suspension bearing is arranged on the right side of the axial permanent magnet suspension bearing, the upper end of the radial permanent magnet suspension bearing is connected with the bearing controller, a bearing seat is arranged outside the radial permanent magnet suspension bearing, and a supporting device is arranged at the rightmost end of the bearing seat;
the supporting device is characterized in that a second radial permanent magnet suspension bearing is arranged on a pump shaft at the lower end of the supporting device, a second axial permanent magnet suspension bearing is arranged on the right side of the second radial permanent magnet suspension bearing, a second auxiliary bearing is arranged on the right side of the second axial permanent magnet suspension bearing, an inner magnet rotor is arranged on the right side of the second auxiliary bearing, an isolation sleeve is arranged on the outer side of the inner magnet rotor, an outer magnet rotor is arranged on the outer side of the isolation sleeve, and a driving motor is arranged on the right side of the outer magnet rotor.
Preferably, the bearing controller is arranged outside the whole pump body, and the radial permanent magnet suspension bearing, the second radial permanent magnet suspension bearing, the axial permanent magnet suspension bearing and the second shaft Xiang Yong magnetic suspension bearing are passive bearings which are in a suspension state.
Preferably, the radial permanent magnetic suspension bearing and the second radial permanent magnetic suspension bearing are both composed of an inner ring and an outer ring, the inner ring is arranged on the pump shaft, the outer ring is arranged on the bearing seat, a radial gap of 1mm is kept between the axial permanent magnetic suspension bearing and the radial permanent magnetic suspension bearing, an axial gap of 0.5mm is kept between the second axial permanent magnetic suspension bearing and the second radial permanent magnetic suspension bearing, and the second axial permanent magnetic suspension bearing and the second radial permanent magnetic suspension bearing are both made of a permanent magnetic material neodymium iron boron and are integrally packaged by stainless steel.
Preferably, the bearing controller is provided with a sensor for detecting parameters, the actuator for correcting the parameters and finally the controller sends out a command to enable the magnetic pump rotor to be suspended at a specified position.
As an optimization, strutting arrangement includes the spring, and the spring material is made for polytetrafluoroethylene, and the upper and lower both ends on bearing frame right side of spring coupling, the spring right side is connected with the contact block, and the material of contact block is the same with the material of spring, and the contact block upper end is equipped with the arc hole site, the inside permanent magnet that is equipped with of arc hole site.
Preferably, the magnetic block is arranged at the center of the right side of the isolation sleeve, the magnetism of the magnetic block and the inner magnetic rotor are the same magnetic pole, and the magnetic force of the magnetic block and the permanent magnet are mutually interfered, so that the inner magnetic rotor is in a stable balanced suspension state under the condition of non-work.
Preferably, the lower ends of the pump body and the driving motor are connected with a connecting frame, a base of the connecting frame is of a rectangular structure, and four connecting holes are formed in four corners of the rectangular base.
Preferably, the contact block is arranged on the upper side of the second auxiliary bearing, the length of the contact block is smaller than the distance between the second auxiliary bearing and the isolation sleeve, and the contact block is not in contact with the inner magnetic rotor in a static state.
Preferably, the width of the spring is less than the distance from the second shaft Xiang Yong magnetic suspension bearing to the uppermost end of the bearing seat, and the spring is not in contact with the second axial permanent magnetic suspension bearing and the second auxiliary bearing in a static state.
As still another preferable mode, the auxiliary bearing and the second auxiliary bearing are respectively disposed at both ends of the pump shaft, and are made of cylindrical engineering plastic filled with carbon graphite, and the inner circle thereof is provided with two rotating grooves.
The invention has the beneficial effects that:
(1) The invention uses the basic pump principle of permanent magnetism 'like poles repel' to make the sliding bearing supporting the weight of the impeller and the rotor and the thrust ring bearing the axial force of the impeller not contact, friction and lubrication are not needed, thereby technically prolonging the service life of the magnetic pump and reducing the energy consumption.
(2) According to the invention, the inner magnetic rotor is arranged on the pump shaft and rotates synchronously with the impeller, the outer magnetic rotor is arranged on the outer side of the isolation sleeve and is connected with the driving motor, then the radial magnetic suspension bearing and the axial magnetic suspension bearing are both made of permanent magnets, the bearing controller device is commonly called as a passive magnetic suspension bearing and is connected with the set top box of the driving motor to provide a power supply, and finally, the controller sends an instruction through a sensor and an actuator inside the bearing controller device to realize the protection of the rotor and the magnetic suspension bearing.
(3) The magnetic block is arranged, the magnetic pump is in a static state in the left-right direction by utilizing the principle that like poles repel each other, the pump shaft is in contact with the isolation sleeve due to the fact that the impeller is possibly subjected to rightward force in the process of starting to move, friction heat is generated in the rotating process, the stability inside the magnetic pump is not high, the magnetic block gives a leftward force to the inner magnetic rotor, and the device can be in a suspension state in the moving process due to the resilience force of the supporting device, the device is not interfered by other effects, the stability is high, the structure of the device is more reasonable, and the service life is longer.
In conclusion, the device has the advantages of low cost, simple structure, high efficiency and stability, and is particularly suitable for the technical field of magnetic suspension magnetic pumps.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings described 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 schematic view of the overall structure of the magnetic pump of the present invention.
FIG. 2 is a sectional interior plan view of the magnetic pump of the present invention.
FIG. 3 is a schematic view of the supporting device of the present invention.
FIG. 4 is a schematic diagram of the placement position and structure of the magnetic blocks in the present invention.
Fig. 5 is a schematic structural diagram of the contact block of the present invention.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely explained in the following by combining the drawings.
Example one
As shown in fig. 1 to 5, the invention provides a full permanent magnetic suspension bearing magnetic pump, which comprises a pump body 1, wherein an impeller 11 is arranged on the inner side of the pump body 1, a pump cover 12 is arranged on the right side of the impeller 11, and a bearing control mechanism 2 is arranged on the right side of the pump cover 12;
the device comprises a bearing control mechanism 2, wherein an auxiliary bearing 21 is arranged in the bearing control mechanism 2, the auxiliary bearing 21 is installed on a pump shaft 22, an axial permanent magnet suspension bearing 23 is arranged on the right side of the auxiliary bearing 21, a radial permanent magnet suspension bearing 24 is arranged on the right side of the axial permanent magnet suspension bearing 23, the upper end of the radial permanent magnet suspension bearing 24 is connected with a bearing controller 25, a bearing seat 26 is arranged outside the radial permanent magnet suspension bearing 24, and a supporting device 3 is arranged at the rightmost end of the bearing seat 26;
the supporting device 3 is characterized in that a second radial permanent magnetic suspension bearing 31 is arranged on a pump shaft 22 at the lower end of the supporting device 3, a second axial permanent magnetic suspension bearing 37 is arranged on the right side of the second radial permanent magnetic suspension bearing 31, a second auxiliary bearing 32 is arranged on the right side of the second axial permanent magnetic suspension bearing 37, an inner magnetic rotor 33 is arranged on the right side of the second auxiliary bearing 32, an isolating sleeve 34 is arranged on the outer side of the inner magnetic rotor 33, an outer magnetic rotor 35 is arranged on the outer side of the isolating sleeve 34, and a driving motor 36 is arranged on the right side of the outer magnetic rotor 35.
Further, as shown in fig. 2, the bearing controller 25 is arranged outside the whole pump body 1, and the radial permanent magnetic suspension bearing 24, the second radial permanent magnetic suspension bearing 31, the axial permanent magnetic suspension bearing 23 and the second shaft Xiang Yong magnetic suspension bearing 37 are all passive bearings which are in a suspension state, and the suspension state realizes non-contact rotation, so that the characteristics of never wearing and lubrication are realized fundamentally, and the service life, mechanical efficiency and safe operation of the device are greatly improved;
the passive bearing is a bearing without a power supply, only needs to input signals and can normally work without an external power supply, and compared with the active bearing, the passive bearing has no additional external power supply, small volume and simple structure.
Further, as shown in fig. 3, the radial permanent magnetic suspension bearing 24 and the second radial permanent magnetic suspension bearing 31 are both composed of an inner ring and an outer ring, the inner ring is installed on the pump shaft 22, the outer ring is installed on the bearing seat 26, a radial gap of 1mm is kept between the radial permanent magnetic suspension bearing 23 and the radial permanent magnetic suspension bearing 24, and an axial gap of 0.5mm is kept between the second shaft Xiang Yong magnetic suspension bearing 37 and the second radial permanent magnetic suspension bearing 31, and they are both made of permanent magnetic material neodymium iron boron and are integrally encapsulated by stainless steel, a gap of 0.5mm is arranged between the end face of the axial permanent magnetic suspension bearing 23 and the end face of the radial permanent magnetic suspension bearing 24, and are never in contact, and are in a suspension state with the end face of the radial permanent magnetic bearing 24 in like polarity (S-S), the two radial permanent magnetic bearings are respectively arranged in the middle of the pump shaft 22, and are composed of the inner ring and the outer ring and are made of annular permanent magnets, the inner ring is fixed on the pump shaft 22, and is magnetized in a radial direction (N-S); the outer ring is fixed on the bearing seat 26, the magnet is magnetized in the radial direction (S-N), and a 1mm gap is formed between the inner ring and the outer ring and never contacts the inner ring and the outer ring; like poles repel (S-S) on the outer surface of the inner ring and the inner surface of the outer ring, and the inner ring and the outer ring are in a suspension state, and separated gaps are used for realizing non-contact and non-friction, so that the device structure is more reasonable, and the real suspension of the inner magnet rotor 33 in the inner part is realized.
Further, as shown in fig. 2, the bearing controller 25 is provided with sensor detection parameters, the actuator corrects the parameters, the controller finally sends out an instruction to enable the rotor of the magnetic pump to suspend at a specified position, the bearing controller 25 is connected with the set-top box of the driving motor 36 to provide a power supply, the bearing finally sends out an instruction by the controller 25 through the sensor and the actuator inside the bearing to protect the rotor and the magnetic suspension bearing, and finally two pairs of friction pairs inside the magnetic pump are not in contact under high-speed rotation, never wear and do not need lubrication, so that the service life, the mechanical efficiency and the safe operation of the equipment are greatly prolonged.
Further, as shown in fig. 4, the supporting device 3 includes a spring 311, the spring 311 is made of teflon, the spring 311 is connected to the upper and lower ends of the right side of the bearing seat 26, the right side of the spring 311 is connected to a contact block 312, the material of the contact block 312 is the same as that of the spring 311, an arc hole 313 is formed in the upper end of the contact block 312, a permanent magnet 314 is arranged inside the arc hole 313, the teflon is commonly called as "plastic king", is a high molecular polymer prepared by polymerizing tetrafluoroethylene as a monomer, is white wax-like, translucent, heat-resistant and cold-resistant, and can be used at-180 to-260 ℃ for a long time, the material has the characteristics of acid and alkali resistance and various organic solvents resistance, and is almost insoluble in all solvents, meanwhile, the teflon has the characteristic of high temperature resistance, the friction coefficient is extremely low, so that the teflon can be used as a lubricating effect, and also becomes an ideal coating for easily cleaning the inner layer of the water pipe, the material of the spring 311 and the contact block 312 is made of teflon, and is arranged at the upper and lower ends of the left and right sides of the bearing seat 26 for supporting the inner magnetic rotor 33 to drive the pump shaft 22 to move in the left and right directions, so that the movement of the whole device can be balanced, and the whole device can realize the dynamic balance, and the stability is higher;
as shown in fig. 5, the permanent magnet 314 is placed inside the arc-shaped hole 313, so as to achieve suspension balance in the left-right direction, and in the process of rotating the motor, a certain rightward pressure is generated at the high-speed rotating impeller, so that the inner magnet rotor 33 can also be in contact with the isolation sleeve 34, thereby solving the problem that the permanent magnet motor is easy to disintegrate or break down in the existing permanent magnet motor under the condition of high-temperature rotation, so that the service life of the motor is longer, and in the process of instant starting or stopping, no influence is generated, and the service life of the permanent magnet motor is prolonged.
Further, as shown in fig. 4, a magnetic block 341 is disposed at a right center position of the isolation sleeve 34, the magnetic block 341 has the same magnetic pole as the inner magnetic rotor 33, and a magnetic force of the magnetic block 341 and the permanent magnet 314 collide with each other, so that the inner magnetic rotor 33 is in a stable balanced suspension state under the condition of non-operation, the magnetic block 341 has a function of possibly receiving a resistance force of pumping liquid and a force of being squeezed to the right in the process of starting rotation of the impeller, the inner magnetic rotor 33 may contact with the isolation sleeve 34, thereby generating friction and destroying the suspension state of internal balance, so that the stability is not high, so that the magnetic block 341 is disposed to possibly receive a certain reaction force by a squeezing force to the right at the impeller 11, so that when the impeller 11 drives the pump shaft 22 to destroy the internal dynamic balance state, the reaction force of the magnetic block 341 can be received, and when the reaction force of the magnetic block 341 to the impeller is too large in the condition of instant stop of the impeller, the spring 311 and the contact block 312 are used to bear the reaction force, so that the inner magnetic rotor 33 can return to the state of balanced suspension, so that the stability is higher, and the service life is longer.
Further, as shown in fig. 1, the lower ends of the pump body 1 and the driving motor 36 are connected with the connecting frame 4, the base of the connecting frame 4 is of a rectangular structure, and four corners of the rectangular base are provided with four connecting holes 41, the connecting frame 4 can also be used for stably enabling the pump body 1 to normally work under the condition of high-speed operation in the pump body 1, the situation that the shell of the pump body 1 moves due to overlarge internal rotating speed is avoided, the overall balance state is damaged, the connecting frame 4 is further provided with four connecting holes 41, the connecting frame can be firmly installed on a workbench, and the stability is higher.
Further, as shown in fig. 4, the contact block 312 is disposed on the upper side of the second auxiliary bearing 32, the length of the contact block 312 is smaller than the distance between the second auxiliary bearing 32 and the spacer sleeve 34, the contact block 312 is not in contact with the inner magnetic rotor 33 in a static state, the contact block 312 is not in contact with any bearing, so as to prevent unnecessary friction from wearing the contact block, and most of the time when the contact block 312 is used is to eliminate inertia caused by the reaction force of the magnetic block 341 on the inner magnetic rotor 33, so that the contact block is basically used in a state of instantly closing the pump body, and in such a closed state, the bearing stops rotating, so that the wear caused by the rotation of the inner magnetic rotor 33 contacting the contact block 312 is small, and the contact block 312 is made of teflon which has a high temperature resistance characteristic, and has an extremely low friction coefficient, so that the contact block can perform a lubricating action, so that the service life of the inner contact block 312 is longer, and the service life of the entire pump body 1 is longer.
Further, as shown in fig. 4, the width of the spring 311 is smaller than the distance from the second shaft Xiang Yong magnetic suspension bearing 37 to the uppermost end of the bearing seat 26, the spring 311 is not in contact with the second shaft Xiang Yong magnetic suspension bearing 37 and the second auxiliary bearing 32 in a static state, and the spring 311 is also set to a length so as not to be in contact with other bearings, thereby reducing unnecessary wear.
Furthermore, the auxiliary bearing 21 and the second auxiliary bearing 32 are respectively arranged at two ends of the pump shaft 22 and are made of cylindrical engineering plastics filled with carbon graphite, the inner circle of the auxiliary bearing is provided with two rotating grooves, the engineering plastics have excellent comprehensive performance, high mechanical strength and good heat resistance, can be used in harsh chemical and physical environments for a long time, the carbon graphite has good sealing performance, good self-lubricating performance, low friction coefficient, good corrosion resistance and good high temperature resistance, the auxiliary bearing 21 and the second auxiliary bearing 32 are respectively arranged at two sides of the two axial permanent magnet suspension bearings, and the rotors in a static state are lifted and are protected under high-speed rotation.
The working process is as follows: according to the magnetic field, the pump principle that like poles repel each other enables an axial thrust bearing the axial force of the impeller and a radial bearing supporting the weight of the impeller and a rotor to have the advantages of no contact, no friction and no lubrication, a thrust ring and a sliding bearing on the traditional magnetic pump are omitted, the rotor of the magnetic pump is stably suspended at a specified position through a controller, the service life of the magnetic pump is greatly prolonged, safety and reliability are improved, and energy consumption is reduced;
secondly, the axial permanent magnetic suspension bearing 23 and the second shaft Xiang Yong magnetic suspension bearing 37 are respectively arranged at two sides of the radial permanent magnetic suspension bearing 24 and the second radial permanent magnetic suspension bearing 31, are made of annular permanent magnets neodymium iron boron, and are axially magnetized (N-S), and the whole is packaged by stainless steel to meet the corrosion resistance requirement; a 0.5mm gap is arranged between the end face of the axial permanent magnet suspension bearing 23 and the end face of the radial permanent magnet suspension bearing 24, the axial permanent magnet suspension bearing and the radial permanent magnet suspension bearing are never in contact, the two radial permanent magnet bearings are respectively arranged in the middle of the pump shaft 22, consist of an inner ring and an outer ring and are made of annular permanent magnet neodymium iron boron, the inner ring is fixed on the pump shaft 22, and the radial permanent magnet bearings are magnetized (N-S); the outer ring is fixed on the bearing seat 26, the magnet is magnetized in the radial direction (S-N), and a 1mm gap is formed between the inner ring and the outer ring and never contacts the inner ring and the outer ring; the outer surface of the inner ring and the inner surface of the outer ring repel each other in the same polarity (S-S) and are in a suspension state;
it should be noted that the arrow shown in the figure indicates the internal flow direction of the liquid delivered by the magnetic pump to take away the thirst current heat of the stainless steel spacer sleeve, so as to ensure the safe operation of the nitro-preservation unit, and considering that the impeller 11 is stressed when the device is in operation and may be squeezed rightwards, so that the internal pump shaft 22 may be squeezed for a long time and may be loosened when being closed instantly, which affects the stability of the device, so the support device 3 and the magnetic block 341 are provided to cope with the stress at the impeller 11 and may damage the internal balance, the magnetic block 341 and the internal magnetic rotor 33 have the same magnetism, according to the principle of "like repulsion", the static state is exactly in the static balance state when the impeller 11 starts to be stressed when rotating, so that the internal static balance is destroyed, which may cause the internal magnetic rotor 33 to contact with the spacer sleeve 34 and generate unnecessary friction, so the magnetic block 341 is provided, which avoids the generation of this situation, and when the magnetic pump is closed instantly, the reaction internal magnetic force of the magnetic block 341 generates a certain inertia, so that the rotor 33 may contact with the spacer sleeve 26, so that the inertia of the support device 3 and the spring 312 are provided to relieve the internal balance, and the stability of the bearing seat 311, which causes higher stability;
finally, the sliding bearing and the thrust ring which bear the weight of the impeller and the inner rotor and the axial force on the traditional magnetic pump are in a suspension state without lubrication, so that two pairs of friction pairs rotating at a high speed are never in contact and are never worn, and the freedom degree of the bearing is controlled by the controller, so that the rotor of the magnetic pump is stably suspended at a specified position.
In the description of the present invention, it is to be understood that the terms "front-back", "left-right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the invention.
Of course, in this disclosure, those skilled in the art will understand that the terms "a" and "an" should be interpreted as "at least one" or "one or more," i.e., in one embodiment, a number of an element may be one, and in another embodiment, a number of the element may be plural, and the terms "a" and "an" should not be interpreted as limiting the number.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art in light of the technical teaching of the present invention should be included within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a full permanent magnetism suspension bearing magnetic drive pump which characterized in that: comprises that
The pump comprises a pump body (1), wherein an impeller (11) is arranged on the inner side of the pump body (1), a pump cover (12) is arranged on the right side of the impeller (11), and a bearing control mechanism (2) is arranged on the right side of the pump cover (12);
the pump comprises a bearing control mechanism (2), wherein an auxiliary bearing (21) is arranged in the bearing control mechanism (2), the auxiliary bearing (21) is installed on a pump shaft (22), an axial permanent magnet suspension bearing (23) is arranged on the right side of the auxiliary bearing (21), a radial permanent magnet suspension bearing (24) is arranged on the right side of the axial permanent magnet suspension bearing (23), the upper end of the radial permanent magnet suspension bearing (24) is connected with a bearing controller (25), a bearing seat (26) is arranged outside the radial permanent magnet suspension bearing (24), and a supporting device (3) is arranged at the rightmost end of the bearing seat (26);
the centrifugal pump comprises a supporting device (3), a second radial permanent magnet suspension bearing (31) is arranged on a pump shaft (22) at the lower end of the supporting device (3), a second axial permanent magnet suspension bearing (37) is arranged on the right side of the second radial permanent magnet suspension bearing (31), a second auxiliary bearing (32) is arranged on the right side of the second axial permanent magnet suspension bearing (37), an inner magnetic rotor (33) is arranged on the right side of the second auxiliary bearing (32), an isolating sleeve (34) is arranged on the outer side of the inner magnetic rotor (33), an outer magnetic rotor (35) is arranged on the outer side of the isolating sleeve (34), and a driving motor (36) is arranged on the right side of the outer magnetic rotor (35).
2. The magnetic pump with the full permanent magnet suspension bearing according to claim 1, wherein the bearing controller (25) is arranged outside the whole pump body (1), and the radial permanent magnet suspension bearing (24), the second radial permanent magnet suspension bearing (31), the axial permanent magnet suspension bearing (23) and the second axial permanent magnet suspension bearing (37) are passive bearings which are all in a suspension state.
3. The magnetic pump with the full permanent magnet suspension bearing according to claim 1, wherein the radial permanent magnet suspension bearing (24) and the second radial permanent magnet suspension bearing (31) are both composed of an inner ring and an outer ring, the inner ring is mounted on the pump shaft (22), the outer ring is mounted on the bearing seat (26), a radial gap of 1mm is kept between the inner ring and the outer ring, an axial gap of 0.5mm is kept between the axial permanent magnet suspension bearing (23) and the radial permanent magnet suspension bearing (24), and an axial gap of 0.5mm is kept between the second axial permanent magnet suspension bearing (37) and the second radial permanent magnet suspension bearing (31), and both are made of permanent magnet neodymium iron boron and are integrally packaged by stainless steel.
4. The magnetic pump with the bearing suspended in the full permanent magnet as claimed in claim 1, characterized in that the bearing controller (25) is provided with sensors to detect parameters, the actuator makes corrections, and finally the controller gives commands to suspend the rotor of the magnetic pump at a specified position.
5. The magnetic pump with the full permanent magnet suspension bearing as claimed in claim 1, wherein the supporting device (3) comprises a spring (311), the spring (311) is made of polytetrafluoroethylene, the spring (311) is connected to the upper end and the lower end of the right side of the bearing seat (26), the right side of the spring (311) is connected with a contact block (312), the contact block (312) is made of the same material as the spring (311), an arc hole (313) is formed in the upper end of the contact block (312), and a permanent magnet (314) is arranged in the arc hole (313).
6. The magnetic pump with the full permanent magnet suspension bearing according to claim 1, wherein a magnetic block (341) is arranged at the center of the right side of the isolation sleeve (34), the magnetic block (341) and the inner magnet rotor (33) have the same magnetic pole, and the magnetic force of the magnetic block (341) and the permanent magnet (314) collide with each other, so that the inner magnet rotor (33) is in a stable balanced suspension state under the non-working condition.
7. The magnetic pump with the full permanent magnet suspension bearing as claimed in claim 1, wherein the lower ends of the pump body (1) and the driving motor (36) are connected with a connecting frame (4), the base of the connecting frame (4) is rectangular, and four connecting holes (41) are formed in four corners of the rectangular base.
8. A magnetic pump with full permanent magnetic suspension bearings according to claim 5, characterized in that the contact block (312) is arranged on the upper side of the second auxiliary bearing (32), the length of the contact block (312) is smaller than the distance between the second auxiliary bearing (32) and the isolation sleeve (34), and the contact block (312) is not in contact with the inner magnetic rotor (33) in a static state.
9. An all permanent magnet suspension bearing magnetic pump according to claim 5, characterized in that the width of the spring (311) is smaller than the distance from the second axial permanent magnet suspension bearing (37) to the uppermost end of the bearing seat (26), and the spring (311) is not in contact with the second axial permanent magnet suspension bearing (37) and the second auxiliary bearing (32) in the static state.
10. The magnetic pump of the full permanent magnetic suspension bearing according to claim 1, characterized in that the auxiliary bearing (21) and the second auxiliary bearing (32) are respectively arranged at two ends of the pump shaft (22) and made of tubular engineering plastic filled with carbon graphite, and the inner circle of the auxiliary bearing is provided with two rotating grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210896582.0A CN115247650B (en) | 2022-07-28 | 2022-07-28 | Full permanent magnetism suspension bearing magnetic drive pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210896582.0A CN115247650B (en) | 2022-07-28 | 2022-07-28 | Full permanent magnetism suspension bearing magnetic drive pump |
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| Publication Number | Publication Date |
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| CN115247650A true CN115247650A (en) | 2022-10-28 |
| CN115247650B CN115247650B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210896582.0A Active CN115247650B (en) | 2022-07-28 | 2022-07-28 | Full permanent magnetism suspension bearing magnetic drive pump |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4541772A (en) * | 1982-10-23 | 1985-09-17 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh | Pump with magnetic bearings |
| JPH0544684A (en) * | 1991-08-13 | 1993-02-23 | Matsushita Electric Ind Co Ltd | Magnet pump |
| US20050214141A1 (en) * | 2002-05-07 | 2005-09-29 | Emu Unterwasserpumpen Gmbh | Driving motor, especially for a pump |
| CN107100878A (en) * | 2017-05-02 | 2017-08-29 | 浙江腾宇泵阀设备有限公司 | A kind of magnetic drive pump with magnetic suspension bearing |
| EP3306099A1 (en) * | 2016-12-23 | 2018-04-11 | C.D.R. Pompe S.r.l. | Magnetic drive pump |
| CN111946656A (en) * | 2020-08-31 | 2020-11-17 | 杭州大路实业有限公司 | Combined permanent magnetic suspension bearing for pump |
| CN216589155U (en) * | 2021-11-26 | 2022-05-24 | 瑞希特(浙江)科技股份有限公司 | Permanent magnet bearing magnetic pump |
-
2022
- 2022-07-28 CN CN202210896582.0A patent/CN115247650B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4541772A (en) * | 1982-10-23 | 1985-09-17 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh | Pump with magnetic bearings |
| JPH0544684A (en) * | 1991-08-13 | 1993-02-23 | Matsushita Electric Ind Co Ltd | Magnet pump |
| US20050214141A1 (en) * | 2002-05-07 | 2005-09-29 | Emu Unterwasserpumpen Gmbh | Driving motor, especially for a pump |
| EP3306099A1 (en) * | 2016-12-23 | 2018-04-11 | C.D.R. Pompe S.r.l. | Magnetic drive pump |
| CN107100878A (en) * | 2017-05-02 | 2017-08-29 | 浙江腾宇泵阀设备有限公司 | A kind of magnetic drive pump with magnetic suspension bearing |
| CN111946656A (en) * | 2020-08-31 | 2020-11-17 | 杭州大路实业有限公司 | Combined permanent magnetic suspension bearing for pump |
| CN216589155U (en) * | 2021-11-26 | 2022-05-24 | 瑞希特(浙江)科技股份有限公司 | Permanent magnet bearing magnetic pump |
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| CN115247650B (en) | 2023-03-21 |
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Denomination of invention: A magnetic pump with all permanent magnetic levitation bearings Effective date of registration: 20231211 Granted publication date: 20230321 Pledgee: Ningbo Bank Co.,Ltd. Huzhou Branch Pledgor: Richter (Zhejiang) Technology Co.,Ltd. Registration number: Y2023980070447 |
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