CN104329266B - A kind of corrosion-resistant magnetic drive pump - Google Patents
A kind of corrosion-resistant magnetic drive pump Download PDFInfo
- Publication number
- CN104329266B CN104329266B CN201410603297.0A CN201410603297A CN104329266B CN 104329266 B CN104329266 B CN 104329266B CN 201410603297 A CN201410603297 A CN 201410603297A CN 104329266 B CN104329266 B CN 104329266B
- Authority
- CN
- China
- Prior art keywords
- pump shaft
- impeller
- clad
- interior
- pump
- 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.)
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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
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention provides a kind of corrosion-resistant magnetic drive pump, wherein, pump shaft plug and impeller inner core are formed in one, plastic impeller is molded by impeller inner core, has plastic layer in pump shaft Surface coating, and the clad and plastic impeller of pump shaft are formed in one, clad outside interior magnet rotor is provided with groove with the side that pump shaft offsets, sealing ring is provided with groove, and the clad of interior magnet rotor also is provided with groove with the side that plastic seal nut offsets, is provided with sealing ring in groove.The corrosion-resistant magnetic drive pump that the present invention is provided, as the clad of pump shaft is integrated with impeller, avoid, the two coupling part is carried out tighter sealing using sealing ring between pump shaft clad and interior magnet rotor clad, magnetic force pump operation time and replacement cycle can greatly be extended by such structure, production cost is greatly reduced.
Description
Technical field
A kind of the present invention relates to magnetic drive pump field, more particularly to corrosion-resistant magnetic drive pump.
Background technology
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 group
When part rotates, magnetic field energy penetrates air-gap and namagnetic substance, drives the interior magnetic assembly being connected with impeller to make synchronous rotary, realizes
The contactless synchronous of power is transmitted.
Magnetic drive pump is situated between as the pump shaft and interior magnet steel of metal can be immersed in corrosivity when some Korrosionsmediums are conveyed
In matter, these parts are often corroded.At present, being mainly for the measure that this problem is taken carries out plastics bag to each part
Cover, but the junction of interior magnetic assembly, pump shaft and impeller is particularly pump shaft and interior magnetic connects part in medium chamber, because cannot wrap
Cover plastics, cause medium osmosis to enter metal contact surface, cause to corrode, can occur seepage first, it has to stop change, cause compared with
Big economic loss.
Content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of higher magnetic drive pump of corrosion resistance.
For reaching above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of corrosion-resistant magnetic drive pump, including bracket, motor, actuating device, outer magnetic assembly, separation sleeve, interior magnetic assembly, in
Body, bearing, pump shaft, impeller, pump case, wherein, are provided with motor and actuating device on bracket, be provided with outer magnetic group on actuating device
Part, interior magnetic assembly magnetically-actuated effect under with outer magnetic assembly Concentric rotation, be provided between interior magnetic assembly and outer magnetic assembly and isolate
Set, interior magnetic assembly include that the clad on interior magnet rotor and its surface, interior magnetic assembly are installed on pump shaft, and pump shaft is located at middle body
Within the chamber, pump shaft one end are applied in the hollow interior of interior magnet rotor, and the other end is provided with impeller, and impeller is located at the within the chamber of pump case, pump
Shaft core rod and impeller inner core are formed in one, and on impeller inner core are molded by plastic impeller, have plastic layer in pump shaft Surface coating,
And the clad and plastic impeller of pump shaft are formed in one, and the clad outside interior magnet rotor is provided with the side that pump shaft offsets
Groove, is provided with sealing ring in groove, the clad of interior magnet rotor also is provided with groove, groove with the side that plastic seal nut offsets
Sealing ring is inside provided with.
Further, one end that the pump shaft clad is contacted with interior magnetic assembly is provided with projection, the thickness of projection
Degree is matched with the width of groove.
Further, pump shaft is tightened up by nut through one end of interior magnet rotor.
Further, tighten up and on the outside of nut, be provided with plastic seal nut, plastic seal nut is connected with pump shaft by screw thread
Connect.
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 prominent restrictor ring, is provided with pod apertures inside linear bearing, sets on middle body and impeller
There is return port.
Further, on impeller, shutoff ring and middle body space preferred scope are 0.3-0.5mm.
Further, the material of the sealing ring being installed in groove is fluorubber.
Further, separation sleeve inner lining material adopts PFA resin-coatings for the inner chamber of PFA resins, pump case and middle body.
The corrosion-resistant magnetic drive pump that the present invention is provided, as clad and the impeller of pump shaft are integrated, it is to avoid connection member
Between there is gap, the two coupling part is carried out using sealing ring between pump shaft clad and interior magnet rotor clad tighter
Sealing, and using tighten up nut and plastic seal block by pump shaft one end seal, by such structure can make metal pump shaft with
Korrosionsmedium in pump is isolated entirely from, and greatly extends magnetic force pump operation time and replacement cycle, is greatly reduced and produces into
This.
Description of the drawings
Structural representations of the Fig. 1 for the corrosion-resistant magnetic drive pump of prior art；
Fig. 2 is impeller of the invention, pump shaft, the structural representation soon in non-installment state of interior magnetic assembly and plastic seal
Figure；
Fig. 3 is the impeller of the present invention, pump shaft, the interior magnetic assembly and plastic seal structural representation in installment state such as fast
Figure；
Fig. 4 is the corrosion-resistant magnetic drive pump cooling medium flowing schematic diagram of the present invention.
Description of reference numerals
1 separation sleeve, magnetic assembly in 2, magnet rotor, 22 plastic clads, 221 thrust annular grooves, 222 grooves, 223 sealings in 21
Circle, 3 pump shafts, 31 pump shaft plugs, 32 plastic clads, 33 thrust annular grooves, 34 raised, body, 5 impellers, 51 shutoff rings, 6 pumps in 4
Shell, 7 tighten up nut, 8 plastic seal nuts, 81 projections, 9 liners, Z axis hold, the outer magnetic group of T brackets, D motors, C actuating devices, W
Part.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with the accompanying drawings and embodiment, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, not
For limiting the present invention.
Fig. 1 shows the magnetic drive pump of prior art, including bracket T, motor D, actuating device C, outer magnetic assembly W, separation sleeve
1st, interior magnetic assembly 2, middle body 4, bearing Z (Fig. 4), pump shaft 3, impeller 5, pump case 6, wherein, are provided with motor D and transmission on bracket T
Device C, is provided with outer magnetic assembly W on actuating device C, interior magnetic assembly 2 is concentric with outer magnetic assembly W under magnetically-actuated effect to revolve
Turn, between interior magnetic assembly 2 and outer magnetic assembly W, be provided with separation sleeve 1, interior magnetic assembly 2 includes the bag on interior magnet rotor 21 and its surface
Coating 22, interior magnetic assembly 2 are installed on pump shaft 3, and pump shaft 3 is located at the within the chamber of middle body 4, and one end of pump shaft 3 is applied in interior magnetic and turns
In the cavity of son, the other end is provided with impeller 5, and impeller 5 is located at the within the chamber of pump case 6.The defect of this structure is pump shaft and interior
Magnet rotor joint face, because being unable to coating plastic, can only be metal material, then can be to metal contact surface when corrosive liquid immerses
Cause to corrode, cause the severe life time reduction of pump shaft.
For this problem, the present invention devises a kind of corrosion-resistant magnetic drive pump.As shown in Fig. 2 pump shaft plug 31 and impeller
Inner core is formed in one, and is molded by plastic impeller 5 on impeller inner core, has plastic layer 32, and pump shaft in 3 Surface coating of pump shaft
Clad 32 and plastic impeller 5 be formed in one, the side that the clad 22 outside interior magnet rotor 21 is offseted with pump shaft 3 is provided with
Groove 222, is provided with sealing ring 223 in groove, 32 projection 34 of clad of pump shaft 3 is extended in groove 222, by sealing
Circle 223 improves the sealing between pump shaft 3 and interior magnetic assembly 2；The clad 22 of interior magnet rotor 21 is offseted with plastic seal nut 8
Side also be provided with groove 222, be provided with sealing ring 223 in groove, 222 periphery of groove of clad 22 is provided with thrust annular groove 221.
As one embodiment of the present invention, as shown in figure 3, pump shaft 3 leads to through one end of 21 internal cavities of interior magnet rotor
Cross nut 7 to tighten up, the outside of nut 7 is provided with plastic seal nut 8, and plastic seal nut 8 is connected with pump shaft 3 by screw thread, mould
The position that groove 222 on material sealing nut 8 and interior magnet rotor clad 22 offsets is provided with 81 (Fig. 2) of projection.
As another preferred embodiment of the present invention, as shown in figure 4, impeller 5 is provided with prominent restrictor ring 51, bearing
Pod apertures (not shown) is provided with inside Z, and middle body and impeller are provided with return port (not shown), the effect of shutoff ring 51
The pressure differential of cooling liquid is to maintain, the low-pressure area of impeller 5 is smoothly back to.Working media (a small amount of work for namely shunting
Medium) process of circulation from high pressure to low pressure as illustrates shown in lines, has some pod apertures, middle body 4 and leaf inside its middle (center) bearing Z
There are return port, shutoff ring 51 to serve the effect for keeping cooling medium cooling circuit pressure differential on wheel 5.9 material of separation sleeve liner
Inner chamber for PFA resins, pump case and middle body adopts PFA resin-coatings.
Used as another preferred embodiment of the present invention, on impeller, shutoff ring and middle body space preferred scope are 0.3-
0.5mm.
Used as another preferred embodiment of the present invention, the material of the sealing ring being installed in groove is fluorubber.
Presently preferred embodiments of the present invention is the foregoing is only, is not used for the practical range for limiting the present invention；If do not taken off
From the spirit and scope of the present invention, the present invention is modified or equivalent, all should be covered in the claims in the present invention
In the middle of protection domain.
Claims (5)
1. a kind of corrosion-resistant magnetic drive pump, including bracket, motor, actuating device, outer magnetic assembly, separation sleeve, interior magnetic assembly, middle body,
Bearing, pump shaft, impeller, pump case, wherein, are provided with motor and actuating device, are provided with outer magnetic assembly on actuating device on bracket,
Interior magnetic assembly magnetically-actuated effect under with outer magnetic assembly Concentric rotation, be provided with separation sleeve between interior magnetic assembly and outer magnetic assembly,
Interior magnetic assembly includes that the clad on interior magnet rotor and its surface, interior magnetic assembly are installed on pump shaft, and pump shaft is located at the chamber of middle body
Interior, pump shaft one end are applied in the hollow interior of interior magnet rotor, and the other end is provided with impeller, and impeller is located at the within the chamber of pump case, and which is special
Levy and be, pump shaft plug and impeller inner core are formed in one, and on impeller inner core are molded by plastic impeller, in pump shaft Surface coating
There is plastic layer, and the clad and plastic impeller of pump shaft are formed in one, the clad outside interior magnet rotor is offseted with pump shaft
Side be provided with groove, be provided with sealing ring in groove, the side that the clad of interior magnet rotor is offseted with plastic seal nut also sets
Fluted, sealing ring is provided with groove, one end that the pump shaft clad is contacted with interior magnetic assembly is provided with projection, protuberance
The thickness for dividing is matched with the width of groove, and the projection of pump shaft clad is extended in groove, and pump shaft runs through interior magnetic
One end of rotor is tightened up by nut, tightens up, plastic seal nut by screw thread with
Pump shaft connects, and the position that the groove on plastic seal nut and interior magnet rotor clad offsets is provided with projection.
2. corrosion-resistant magnetic drive pump according to claim 1, it is characterised in that impeller is provided with prominent restrictor ring, straight line
Bearing inner is provided with pod apertures, and middle body and impeller are provided with return port.
3. corrosion-resistant magnetic drive pump according to claim 2, it is characterised in that shutoff ring and middle body space scope are on impeller
0.3-0.5mm.
4. corrosion-resistant magnetic drive pump according to claim 1, it is characterised in that the material of the sealing ring being installed in groove is equal
For fluorubber.
5. corrosion-resistant magnetic drive pump according to claim 1, it is characterised in that separation sleeve inner lining material is PFA resins, pump case
PFA resin-coatings are adopted with the inner chamber of middle body.
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 CN104329266A (en) | 2015-02-04 |
| CN104329266B true 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) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6352990U (en) * | 1986-09-25 | 1988-04-09 | ||
| 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 |
| JP3877211B2 (en) * | 2003-03-20 | 2007-02-07 | 株式会社イワキ | Manufacturing method of rear casing in magnet pump |
| CN101225828A (en) * | 2008-01-21 | 2008-07-23 | 蔡国华 | Separation sleeve for magnetic pump or shield pump |
| CN101614212A (en) * | 2009-07-23 | 2009-12-30 | 蔡国华 | Magnetic drive pump |
| CN101614213A (en) * | 2009-07-23 | 2009-12-30 | 蔡国华 | A kind of magnetic drive pump |
| CN101709712A (en) * | 2009-12-09 | 2010-05-19 | 黄佳华 | Horizontal type magnetic drive pump |
| CN103161749B (en) * | 2011-12-09 | 2015-04-22 | 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN104329266A (en) | 2015-02-04 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |