CN101251119A - Magnetic drive pump - Google Patents
Magnetic drive pump Download PDFInfo
- Publication number
- CN101251119A CN101251119A CNA2008100235656A CN200810023565A CN101251119A CN 101251119 A CN101251119 A CN 101251119A CN A2008100235656 A CNA2008100235656 A CN A2008100235656A CN 200810023565 A CN200810023565 A CN 200810023565A CN 101251119 A CN101251119 A CN 101251119A
- Authority
- CN
- China
- Prior art keywords
- pump shaft
- pump
- magnet steel
- magnetic drive
- magnetic steel
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a magnetic drive pump which comprises a support, a motor, outer magnetic steel driven by the motor, inner magnetic steel arranged concentric to the outer magnetic steel and capable of rotating under the drive of the magnetic force of the outer magnetic steel, an isolation sleeve arranged between the outer magnetic steel and the inner magnetic steel, a pump shaft with one end connected with the inner magnetic steel, impellers arranged on the pump shaft, a pump casing positioned outside the pump shaft and fixed with the support as well as a sliding bearing and a thrust bearing arranged concentric to the pump shaft, wherein the pump shaft is fixed with the inner magnetic steel through a circumferential fixed structure and an axial fixed structure. The mode ensures that the pump shaft does not separate from the inner magnetic steel when the magnetic drive pump is in reverse motion.
Description
Technical field
The present invention relates to a kind of magnetic drive pump.
Background technique
Magnetic drive pump of the prior art as shown in Figure 1, the general screw thread that adopts is connected between the pump shaft of magnetic drive pump (5) and the interior magnet steel (3), as shown in Figure 1, an end of pump shaft (5) is screw section (8), in screwing in by screw-thread fit in the magnet steel (3).Because magnetic drive pump is on-stream may to be reversed, thereby cause the scyewed joint of this pump shaft (5) end to take place to become flexible, cause interior magnet steel (3) and pump shaft (5) to break away from.
In order to prevent the disengaging of screw thread herein, adopt sealer that it is sealed in the prior art usually.But this way makes magnetic drive pump when needing repairing, be difficult to screw section (8) are disassembled from interior magnet steel (3), even can only whole screw section (8) are sawed-off from pump shaft, and have to change a whole set of parts.Not only lost time, more cause a large amount of wastes, increase cost.
Summary of the invention
The object of the present invention is to provide a kind of pump shaft fixation, loosening magnetic drive pump can not take place when pump reverses.
In order to achieve the above object, the present invention adopts following technological scheme:
A kind of magnetic drive pump, comprise support, motor, by this motor-driven outer steel, with the concentric interior magnet steel that is provided with and can under the magneto drive of outer steel, rotates of this outer steel, be arranged on described outer steel and described between the magnet steel separation sleeve, an end with described in the pump shaft that is connected of magnet steel, be installed in impeller on the described pump shaft, be positioned at described pump shaft outside and the pump case that is fixedly connected with described support, with the sliding bearing and the thrust bearing of the concentric setting of described pump shaft.Described pump shaft by circumferential fixed structure and axial restraint structure and described in magnet steel be fixedly connected.
Described circumferential fixed structure is a key.Described key is a flat key.The number of described key is one.Described axial restraint structure comprises: be opened in described pump shaft with described on the outer surface of the end that is connected of magnet steel screw thread, with the nut of this threads engaged, described nut is inconsistent with described interior magnet steel.
Owing to adopted technique scheme, the present invention to have following advantage:
1, adopts the reliability height of key connecting, avoided getting loose owing to the pump shaft that the impeller reversing causes;
Convenient disassembly when 2, keeping in repair, thus avoided changing a whole set of parts, save cost.
Description of drawings
Accompanying drawing 1 is looked whole-cutaway view for the master of magnetic drive pump of the prior art;
Accompanying drawing 2 is looked whole-cutaway view for master of the present invention;
Wherein: 1, support; 11, carriage; 12, suspension; 2, outer steel; 3, interior magnet steel; 4, separation sleeve; 5, pump shaft; 51, flat key; 52, keyway; 53, nut; 6, impeller; 7, pump case; 71, pump case front cover; 72, middle body; 8, screw section.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described:
As shown in Figure 2, according to magnetic drive pump of the invention process, comprise by carriage 11 and be fixedly mounted on support 1 that the suspension 12 on this carriage 11 forms, directly link with motor and by motor-driven outer steel 2, with the interior magnet steel 3 of these outer steel 2 concentric settings, be arranged on separation sleeve 4 between outer steel 2 and the interior magnet steel 3, pump shaft 5 that an end is connected with interior magnet steel 3, be installed in impeller 6 on the pump shaft 5, be positioned at described pump shaft 5 outsides and the pump case 7 that is fixedly connected with support 1, with the sliding bearing 8 and the thrust bearing 9 of pump shaft 5 concentric settings.Wherein, described outer steel 2 rotates by magnet steel in the magneto drive 3, and then impeller 6 is rotated.Pump case 7 comprises the pump case front cover 71 that is arranged in the magnetic drive pump front-end face and the body 72 that is fixedly connected with the ear end face of this front cover, and the other end of middle body 72 and described suspension 12 are fixedly connected.Pump shaft 5 rotating being installed in the chamber that surrounds by middle body 72.Described outer steel 5 links by transmission shaft and motor.
Inventive point of the present invention is realized in the present embodiment in the following way: pump shaft 5 is fixedly connected with interior magnet steel 3 by flat key 51 and nut 53.Wherein, flat key 51 has limited the pump shaft 5 internally circumferential rotation of magnet steel 3 mutually.Be located at pump shaft 5 ends and limited pump shaft 5 internal endwisely slipping of magnet steel 3 mutually by thread bush with the inconsistent nut 53 of interior magnet steel 3.
This connecting mode is easy to installation and removal, and connects firmly.Even magnetic drive pump takes a turn for the worse, can not get loose between pump shaft 5 and the interior magnet steel 3 yet.
As mentioned above, we are illustrated according to aim of the present invention fully, but the present invention is not limited to the foregoing description and implementation methods.The practitioner of correlative technology field can carry out different variations and enforcement in the scope of technological thought permission of the present invention.
Claims (5)
1, a kind of magnetic drive pump, comprise support (1), motor, by this motor-driven outer steel (2), with the concentric interior magnet steel (3) that is provided with and can under the magneto drive of outer steel (2), rotates of this outer steel (2), be arranged on the separation sleeve (4) between described outer steel (2) and the described interior magnet steel (3), the pump shaft (5) that one end is connected with described interior magnet steel (3), be installed in the impeller (6) on the described pump shaft (5), the pump case (7) that is positioned at described pump shaft (5) outside and is fixedly connected with described support (1), sliding bearing (8) and thrust bearing (9) with the concentric setting of described pump shaft (5) is characterized in that: described pump shaft (5) by circumferential fixed structure and axial restraint structure and described in magnet steel (3) be fixedly connected.
2, a kind of magnetic drive pump according to claim 1 is characterized in that: described circumferential fixed structure is a key.
3, a kind of magnetic drive pump according to claim 2 is characterized in that: described key is flat key (51).
4, a kind of magnetic drive pump according to claim 3 is characterized in that: the number of described key is one.
5, a kind of magnetic drive pump according to claim 1, it is characterized in that: described axial restraint structure comprises: be opened in described pump shaft (5) with described on the outer surface of the end that is connected of magnet steel (3) screw thread, with the nut (53) of this threads engaged, described nut (53) with described in magnet steel (3) inconsistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100235656A CN101251119A (en) | 2008-04-07 | 2008-04-07 | Magnetic drive pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100235656A CN101251119A (en) | 2008-04-07 | 2008-04-07 | Magnetic drive pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101251119A true CN101251119A (en) | 2008-08-27 |
Family
ID=39954670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100235656A Pending CN101251119A (en) | 2008-04-07 | 2008-04-07 | Magnetic drive pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101251119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110249135A (en) * | 2016-11-01 | 2019-09-17 | Psg全球公司 | Magnetic coupling sealless centrifugal pump |
-
2008
- 2008-04-07 CN CNA2008100235656A patent/CN101251119A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110249135A (en) * | 2016-11-01 | 2019-09-17 | Psg全球公司 | Magnetic coupling sealless centrifugal pump |
| CN110249135B (en) * | 2016-11-01 | 2021-09-21 | Psg全球公司 | Magnetic coupling seal-free centrifugal pump |
| US11396890B2 (en) | 2016-11-01 | 2022-07-26 | Psg California Llc | Magnetically coupled sealless centrifugal pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205663649U (en) | Locking device of chemical pump impeller | |
| CN201206558Y (en) | Magnetic pump | |
| CN101251119A (en) | Magnetic drive pump | |
| CN102518783B (en) | Double-screw extruder reduction gear box provided with tandem thrust bearing pre-loading device | |
| CN201561102U (en) | Transmission device for video camera | |
| WO2006126243A1 (en) | Method of connecting and fixing ball screw shaft to motor shaft | |
| CN203404264U (en) | Shaft sleeve axial fixing structure | |
| CN203574498U (en) | Connecting device of motor and oil pump | |
| CN203180718U (en) | Connection structure between air compressor and driving motor thereof | |
| CN202115573U (en) | Worm and gear transmission device in power-assisted steering system | |
| CN202418506U (en) | Reduction gear box of double-screw extruder with tandem thrust bearing pre-tightening device | |
| CN208128063U (en) | A kind of motor driving structure of new-energy automobile | |
| CN201869003U (en) | Novel driving device | |
| CN102042262A (en) | Centrifugal pump inducer transmission device | |
| CN110185651A (en) | Can axial lossless assembly and disassembly rolling bearing mounting structure | |
| CN203453322U (en) | Pin connection device of vacuum pump coupler | |
| CN205298189U (en) | No key -type connection transmission moment of torsion structure | |
| CN202391981U (en) | Driving pulley mechanism of vertical needle-shaped impact grinding mill | |
| CN210265718U (en) | Transmission shaft device convenient to disassemble | |
| CN217814096U (en) | Rotor magnetic deviation preventing mechanism of magnetic pump | |
| CN208955826U (en) | A kind of lifter dynamo of autocar glass component | |
| CN202157990U (en) | Novel fastening structure for vertical packingless pump shaft | |
| CN209344955U (en) | Segmented submersible motor | |
| CN211106916U (en) | Central electric drive axle structure | |
| CN2572093Y (en) | Connection expansion sleeve quick assembling/disassembling by round nut |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080827 |