CN104329266A - Anti-corrosion magnetic force pump - Google Patents
Anti-corrosion magnetic force pump Download PDFInfo
- Publication number
- CN104329266A CN104329266A CN201410603297.0A CN201410603297A CN104329266A CN 104329266 A CN104329266 A CN 104329266A CN 201410603297 A CN201410603297 A CN 201410603297A CN 104329266 A CN104329266 A CN 104329266A
- Authority
- CN
- China
- Prior art keywords
- impeller
- pump shaft
- pump
- corrosion
- plastic
- 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.)
- Granted
Links
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
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- 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
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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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
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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
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid 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
- F04D29/22—Rotors specially for centrifugal pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an anti-corrosion magnetic force pump. A pump shaft core rod and an impeller inner core are formed in an integrated way, a plastic impeller is injected on the impeller inner core, a plastic layer is coated on the surface of a pump shaft, the coating layer of the pump shaft and the plastic impeller are formed in the integrated way, a groove is formed in one side, abutting against the pump shaft, of an outer coating layer of an inner magnetic rotor, and is internally provided with a sealing ring, and a plastic sealing nut abut against each other, and a groove is also formed in one side, abutting against a plastic sealing nut, of a coating layer of the inner magnetic rotor, and is internally provided with a sealing ring. Due to the fact that the coating layer of the pump shaft and the impeller are integrated, the occurrence of a gap between the connecting components can be avoided, the sealing rings are used for conducting tighter sealing on the connecting parts of the coating layer of the pump shaft and the coating layer of the inner magnetic rotor, the working time and the exchanging cycle of the magnetic force pump can be greatly prolonged through the structure, and the production cost is greatly lowered.
Description
Technical field
The present invention relates to magnetic drive pump field, particularly relate to a kind of corrosion-resistant magnetic drive pump.
Background technique
Magnetic drive pump is made up of outer magnetic assembly, interior magnetic assembly and non-magnetic separation sleeve, when external motivating force drives outer magnetic assembly to rotate, magnetic field energy penetrates air gap and namagnetic substance, drives magnetic assembly in being connected with impeller to make synchronous rotary, realizes the contactless synchronous transmission of power.
Magnetic drive pump is when carrying some Korrosionsmediums, and because the pump shaft of metal and interior magnet steel can be immersed in Korrosionsmedium, these parts are often corroded.At present, the measure taked for this problem mainly carries out plastic overmold to each parts, but particularly pump shaft and the interior magnetic attachment portion, joint of magnetic assembly, pump shaft and impeller in medium chamber, because cannot coating plastic, cause medium osmosis to enter Metal Contact face, cause corrosion, first can occur seepage, have to stop and change, cause larger economic loss.
Summary of the invention
For the problems referred to above, the object of this invention is to provide the magnetic drive pump that a kind of corrosion resistance is stronger.
For achieving the above object, the present invention adopts following technological scheme:
A kind of corrosion-resistant magnetic drive pump, comprise bracket, motor, transmission device, outer magnetic assembly, separation sleeve, interior magnetic assembly, middle body, bearing, pump shaft, impeller, pump case, wherein, bracket is provided with motor and transmission device, transmission device is provided with outer magnetic assembly, interior magnetic assembly under magneto drive effect with outer magnetic assembly Concentric rotation, separation sleeve is provided with between interior magnetic assembly and outer magnetic assembly, interior magnetic assembly comprises the clad on interior magnet rotor and its surface, interior magnetic assembly is installed on pump shaft, pump shaft is arranged in the chamber of body, pump shaft one end be applied in interior magnet rotor hollow in, the other end is provided with impeller, impeller is positioned at the chamber of pump case, pump shaft plug and impeller inner core are formed in one, impeller inner core injects plastic impeller, plastic layer is had at pump shaft Surface coating, and the clad of pump shaft and plastic impeller are formed in one, the side that the clad of interior magnet rotor outside and pump shaft offset is provided with groove, seal ring is provided with in groove, the side that the clad of interior magnet rotor and plastic seal nut offset also is provided with groove, seal ring is provided with in groove.
Further, one end of described pump shaft clad and interior magnetic component touch is provided with projection, and the thickness of projection and the width of groove match.
Further, one end that pump shaft runs through interior magnet rotor is tightened up by nut.
Further, the outside of tightening up nut is provided with plastic seal nut, and plastic seal nut is connected with pump shaft by screw thread.
Further, the position that the groove on plastic seal nut and interior magnet rotor clad offsets is provided with projection.
Further, impeller is provided with outstanding restrictor ring, and linear bearing inside is provided with pod apertures, and middle body and impeller are provided with return port.
Further, on impeller, shutoff ring and middle body space preferable range are 0.3-0.5mm.
Further, the material being installed on the seal ring in groove is fluorine rubber.
Further, separation sleeve inner lining material is PFA resin, and the inner chamber of pump case and middle body adopts PFA resin-coating.
Corrosion-resistant magnetic drive pump provided by the invention, because the clad of pump shaft and impeller are integrated, avoid between connected element and occur gap, between pump shaft clad and interior magnet rotor clad, utilize seal ring that tighter sealing is carried out in the two attachment portion, and nut is tightened up in utilization and pump shaft one end seals by plastic seal block, can be made by such structure that the Korrosionsmedium in metal pump shaft and pump is completely isolated to be opened, greatly extend magnetic drive pump operating time and replacement cycle, significantly reduce cost of production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the corrosion-resistant magnetic drive pump of prior art;
Fig. 2 is impeller of the present invention, pump shaft, interior magnetic assembly and the structural representation of plastic seal soon when non-installment state;
Fig. 3 is impeller of the present invention, pump shaft, interior magnetic assembly and the plastic seal structural representation when installment state such as fast;
Fig. 4 is corrosion-resistant magnetic drive pump cooling medium flow schematic diagram of the present invention.
Description of reference numerals
Magnet rotor in magnetic assembly, 21 in 1 separation sleeve, 2,22 plastic clads, 221 thrust annular grooves, 222 grooves, 223 seal rings, 3 pump shafts, 31 pump shaft plugs, 32 plastic clads, 33 thrust annular grooves, 34 protruding, body in 4,5 impellers, 51 shutoff rings, 6 pump cases, 7 tighten up nut, 8 plastic seal nuts, 81 projections, 9 liners, Z axis hold, T bracket, D motor, C transmission device, W outer magnetic assembly.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 shows the magnetic drive pump of prior art, comprise bracket T, motor D, transmission device C, outer magnetic assembly W, separation sleeve 1, interior magnetic assembly 2, middle body 4, bearing Z (Fig. 4), pump shaft 3, impeller 5, pump case 6, wherein, bracket T is provided with motor D and transmission device C, transmission device C is provided with outer magnetic assembly W, interior magnetic assembly 2 under magneto drive effect with outer magnetic assembly W Concentric rotation, separation sleeve 1 is provided with between interior magnetic assembly 2 and outer magnetic assembly W, interior magnetic assembly 2 comprises the clad 22 on interior magnet rotor 21 and its surface, interior magnetic assembly 2 is installed on pump shaft 3, pump shaft 3 is arranged in the chamber of body 4, one end of pump shaft 3 is applied in the cavity of interior magnet rotor, the other end is provided with impeller 5, impeller 5 is positioned at the chamber of pump case 6.The defect of this structure is pump shaft and interior magnet rotor junction surface because can not coating plastic, can only be metallic material, then can cause corrosion to Metal Contact face, cause the severe life time reduction of pump shaft when corrosion liquid immerses.
For this problem, the present invention devises a kind of corrosion-resistant magnetic drive pump.As shown in Figure 2, pump shaft plug 31 and impeller inner core are formed in one, impeller inner core injects plastic impeller 5, plastic layer 32 is had at pump shaft 3 Surface coating, and the clad 32 of pump shaft and plastic impeller 5 are formed in one, the side that clad 22 and the pump shaft 3 of interior magnet rotor 21 outside offset is provided with groove 222, is provided with seal ring 223 in groove, clad 32 projection 34 of pump shaft 3 extends in groove 222, improves the sealing between pump shaft 3 and interior magnetic assembly 2 by seal ring 223; The side that clad 22 and the plastic seal nut 8 of interior magnet rotor 21 offset also is provided with groove 222, and be provided with seal ring 223 in groove, groove 222 periphery of clad 22 is provided with thrust annular groove 221.
As one embodiment of the present invention, as shown in Figure 3, one end that pump shaft 3 runs through interior magnet rotor 21 internal cavities is tightened up by nut 7, the outside of nut 7 is provided with plastic seal nut 8, plastic seal nut 8 is connected with pump shaft 3 by screw thread, and the position that plastic seal nut 8 and the groove 222 on interior magnet rotor clad 22 offset is provided with protruding 81 (Fig. 2).
As another preferred embodiment of the present invention, as shown in Figure 4, impeller 5 is provided with outstanding restrictor ring 51, bearing Z inside is provided with pod apertures (not shown), middle body and impeller are provided with return port (not shown), the effect of shutoff ring 51 is the pressure differences keeping cooling liquid, is back to the low pressure area of impeller 5 smoothly.Working medium (a small amount of the working medium namely shunted) process of circulation from high pressure to low pressure is shown in shown in signal lines, there are some pod apertures its middle (center) bearing Z inside, middle body 4 and impeller 5 have return port, and shutoff ring 51 serves the effect keeping cooling medium cooling circuit pressure difference.Separation sleeve liner 9 material is PFA resin, and the inner chamber of pump case and middle body adopts PFA resin-coating.
As another preferred embodiment of the present invention, on impeller, shutoff ring and middle body space preferable range are 0.3-0.5mm.
As another preferred embodiment of the present invention, the material being installed on the seal ring in groove is fluorine rubber.
The foregoing is only preferred embodiment of the present invention, be not used for limiting practical range of the present invention; If do not depart from the spirit and scope of the present invention, the present invention is modified or equivalent to replace, in the middle of the protection domain that all should be encompassed in the claims in the present invention.
Claims (9)
1. a corrosion-resistant magnetic drive pump, comprise bracket, motor, transmission device, outer magnetic assembly, separation sleeve, interior magnetic assembly, middle body, bearing, pump shaft, impeller, pump case, wherein, bracket is provided with motor and transmission device, transmission device is provided with outer magnetic assembly, interior magnetic assembly under magneto drive effect with outer magnetic assembly Concentric rotation, separation sleeve is provided with between interior magnetic assembly and outer magnetic assembly, interior magnetic assembly comprises the clad on interior magnet rotor and its surface, interior magnetic assembly is installed on pump shaft, pump shaft is arranged in the chamber of body, pump shaft one end be applied in interior magnet rotor hollow in, the other end is provided with impeller, impeller is positioned at the chamber of pump case, it is characterized in that, pump shaft plug and impeller inner core are formed in one, impeller inner core injects plastic impeller, plastic layer is had at pump shaft Surface coating, and the clad of pump shaft and plastic impeller are formed in one, the side that the clad of interior magnet rotor outside and pump shaft offset is provided with groove, seal ring is provided with in groove, the side that the clad of interior magnet rotor and plastic seal nut offset also is provided with groove, seal ring is provided with in groove.
2. corrosion-resistant magnetic drive pump according to claim 1, is characterized in that, one end of described pump shaft clad and interior magnetic component touch is provided with projection, and the thickness of projection and the width of groove match.
3. corrosion-resistant magnetic drive pump according to claim 1, is characterized in that, one end that pump shaft runs through interior magnet rotor is tightened up by nut.
4. corrosion-resistant magnetic drive pump as described in claim 3, is characterized in that, the outside of tightening up nut is provided with plastic seal nut, and plastic seal nut is connected with pump shaft by screw thread.
5. corrosion-resistant magnetic drive pump as described in claim 4, is characterized in that, the position that the groove on plastic seal nut and interior magnet rotor clad offsets is provided with projection.
6. corrosion-resistant magnetic drive pump according to claim 1, is characterized in that, impeller is provided with outstanding restrictor ring, and linear bearing inside is provided with pod apertures, and middle body and impeller are provided with return port.
7. corrosion-resistant magnetic drive pump according to claim 6, is characterized in that, on impeller, shutoff ring and middle body space scope are 0.3-0.5mm.
8. corrosion-resistant magnetic drive pump according to claim 1, is characterized in that, the material being installed on the seal ring in groove is fluorine rubber.
9. corrosion-resistant magnetic drive pump according to claim 1, is characterized in that, separation sleeve inner lining material is PFA resin, and the inner chamber of pump case and middle body adopts PFA resin-coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603297.0A CN104329266B (en) | 2014-10-30 | 2014-10-30 | A kind of corrosion-resistant magnetic drive pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603297.0A CN104329266B (en) | 2014-10-30 | 2014-10-30 | A kind of corrosion-resistant magnetic drive pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104329266A true CN104329266A (en) | 2015-02-04 |
| CN104329266B CN104329266B (en) | 2017-03-15 |
Family
ID=52404052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410603297.0A Active CN104329266B (en) | 2014-10-30 | 2014-10-30 | A kind of corrosion-resistant magnetic drive pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329266B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850818A (en) * | 1986-09-25 | 1989-07-25 | Seikow Chemical Engineering & Machinery, Ltd. | Corrosion-resistant magnet pump |
| CN2310185Y (en) * | 1997-09-17 | 1999-03-10 | 上海万成企业发展有限公司 | Corrosion-resistant pump |
| US20040184936A1 (en) * | 2003-03-20 | 2004-09-23 | Iwaki Co., Ltd. | Rear casing arrangement for magnetic drive pump |
| US6997688B1 (en) * | 2003-03-06 | 2006-02-14 | Innovative Mag-Drive, Llc | Secondary containment for a magnetic-drive centrifugal pump |
| CN101225828A (en) * | 2008-01-21 | 2008-07-23 | 蔡国华 | Separation sleeve for magnetic pump or shield pump |
| CN101614213A (en) * | 2009-07-23 | 2009-12-30 | 蔡国华 | A kind of magnetic drive pump |
| CN101614212A (en) * | 2009-07-23 | 2009-12-30 | 蔡国华 | Magnetic drive pump |
| CN101709712A (en) * | 2009-12-09 | 2010-05-19 | 黄佳华 | Horizontal type magnetic drive pump |
| CN103161749A (en) * | 2011-12-09 | 2013-06-19 | 黄晓鹏 | High-power plastic lining magnetic pump |
| CN203756585U (en) * | 2014-02-21 | 2014-08-06 | 太仓市磁力驱动泵有限公司 | Internal magnetic steel sealing device of magnetic pump |
-
2014
- 2014-10-30 CN CN201410603297.0A patent/CN104329266B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850818A (en) * | 1986-09-25 | 1989-07-25 | Seikow Chemical Engineering & Machinery, Ltd. | Corrosion-resistant magnet pump |
| CN2310185Y (en) * | 1997-09-17 | 1999-03-10 | 上海万成企业发展有限公司 | Corrosion-resistant pump |
| US6997688B1 (en) * | 2003-03-06 | 2006-02-14 | Innovative Mag-Drive, Llc | Secondary containment for a magnetic-drive centrifugal pump |
| US20040184936A1 (en) * | 2003-03-20 | 2004-09-23 | Iwaki Co., Ltd. | Rear casing arrangement for magnetic drive pump |
| CN101225828A (en) * | 2008-01-21 | 2008-07-23 | 蔡国华 | Separation sleeve for magnetic pump or shield pump |
| CN101614213A (en) * | 2009-07-23 | 2009-12-30 | 蔡国华 | A kind of magnetic drive pump |
| CN101614212A (en) * | 2009-07-23 | 2009-12-30 | 蔡国华 | Magnetic drive pump |
| CN101709712A (en) * | 2009-12-09 | 2010-05-19 | 黄佳华 | Horizontal type magnetic drive pump |
| CN103161749A (en) * | 2011-12-09 | 2013-06-19 | 黄晓鹏 | High-power plastic lining magnetic pump |
| CN203756585U (en) * | 2014-02-21 | 2014-08-06 | 太仓市磁力驱动泵有限公司 | Internal magnetic steel sealing device of magnetic pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104329266B (en) | 2017-03-15 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |