CN102889236A - Magnetic sealing device for centrifugal pump - Google Patents
Magnetic sealing device for centrifugal pump Download PDFInfo
- Publication number
- CN102889236A CN102889236A CN 201110199973 CN201110199973A CN102889236A CN 102889236 A CN102889236 A CN 102889236A CN 201110199973 CN201110199973 CN 201110199973 CN 201110199973 A CN201110199973 A CN 201110199973A CN 102889236 A CN102889236 A CN 102889236A
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- Prior art keywords
- matrix
- electromagnet
- pump
- permanent magnet
- centrifugal pump
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- 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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Abstract
The invention discloses a magnetic sealing device for a centrifugal pump and belongs to the technical field of a liquid conveying pump. The magnetic sealing device for the centrifugal pump provided by the invention comprises an electromagnet (6), an armature (7), a rear sealing substrate (15), a rear permanent magnet (16), a front sealing substrate (17), a front permanent magnet (18) and a secondary impeller (19). Compared with the prior art, the magnetic sealing device for the centrifugal pump has the advantages of excellent sealing property, simple structure, stable property, and the like.
Description
Technical field
The invention belongs to technical field, more particularly, belong to a kind of magnetic sealing device for centrifugal pump.
Background technique
In the prior art, often there is leakage problem in centrifugal pump, and this normal operation impact on pump is very large, how to solve the leakage problem of centrifugal pump, is the key factor of restriction centrifugal pump service behaviour.
Summary of the invention
The present invention provides a kind of band electromagnetism of centrifugal pump to drive sealing mechanism in order to overcome the above problems.
A kind of magnetic sealing device for centrifugal pump of the present invention is characterized in that described magnetic sealing device comprises electromagnet, armature, rear sealing matrix, rear permanent magnet, front sealing matrix, front permanent magnet, sub-propeller; Wherein:
Pump cover is fixed on the pump housing, and the magnetic pole circle is fixed on the pump cover, and the electromagnet matrix is fixed on the magnetic pole circle; Sub-propeller is installed between pump cover and the electromagnet matrix;
Electromagnet is installed in the electromagnet matrix, and the electromagnet matrix is fixed on the magnetic pole circle; Armature is installed on the fixed magnetizer by positioning screwn;
Front sealing matrix and rear sealing matrix have rear permanent magnet rotating between magnet case and the sub-propeller in the rear sealing matrix, in the front sealing matrix front permanent magnet are arranged.
When pump ran well, medium entered from the import of the pump housing, because impeller action, medium is discharged from outlet, and sub-propeller is washed into outlet with some solid particles.When pump is running well, the electromagnet energising, armature is sucked back, and rear sealing matrix and front sealing matrix are pulled open, and the medium that is leaked to the pump back cavity is discharged to outlet by sub-propeller, and some solid particles also are discharged from.When pump shuts down, the electromagnet outage, armature is by spring reset; rear sealing matrix and front sealing matrix be closure owing to the sucking action that fills rear permanent magnet within it, front permanent magnet; play the seal action when shutting down, medium can be because of shutdown, and sub-propeller is not worked and revealed.This is inflammable to carrying, explosive, deep-etching, hypertoxic medium are extremely important.This Electromagnetic Drive seal arrangement mechanism can seal the leakage behind the centrifugal pump impeller effectively in termination of pumping.
The present invention is compared with prior art: good seal performance, simple in structure, steady performance.
Description of drawings
Accompanying drawing 1 is the structural representation of magnetic sealing device for centrifugal pump of the present invention.
Embodiment
Fig. 1 is the structural representation of magnetic sealing device for centrifugal pump of the present invention.Centrifugal pump of the present invention comprises the pump housing 1, impeller 2, electromagnet matrix 3, screw 4, magnetic pole circle 5, coil 6, armature 7, fixed magnetizer 8, rotate magnet case 9, axle sleeve 10, seal ring 11, bearing housing 12, bearing 13, axle 14, rear sealing matrix 15, rear permanent magnet 16, front sealing matrix 17, front permanent magnet 18, sub-propeller 19, pin 20, pump cover 21.
Described magnetic sealing device comprises electromagnet 6, armature 7, rear sealing matrix 15, rear permanent magnet 16, front sealing matrix 17, front permanent magnet 18, sub-propeller 19; Wherein:
Pump cover 21 is fixed on the pump housing 1, and magnetic pole circle 5 is fixed on the pump cover 21, and electromagnet matrix 3 is fixed on the magnetic pole circle 5; Sub-propeller 19 is installed between pump cover 21 and the electromagnet matrix 3;
Electromagnet 6 is installed in the electromagnet matrix 3, and electromagnet matrix 3 is fixed on the magnetic pole circle 5; Armature 7 is installed on the fixed magnetizer 8 by positioning screwn;
Front sealing matrix 17 and rear sealing matrix 15 have rear permanent magnet 16 rotating between magnet case 9 and the sub-propeller 19 in the rear sealing matrix 15, front permanent magnet 18 is arranged in the front sealing matrix 17.
Impeller 2, sub-propeller 19, axle sleeve 10 are installed on the axle 14, and sub-propeller 19 is sleeved in the impeller 2, and impeller 2 is installed in the pump housing 1.Coil 6, fixed magnetizer 8 are installed in the magnetic pole circle 5, and magnetic pole circle 5 is installed in electromagnet matrix 3 by screw, and electromagnet matrix 3 is installed on the pump cover 21 by screw, and pump cover 21 and bearing housing 12 are installed on the pump housing 1 by screw.One end of axle 14 is installed on the bearing housing 12 by bearing 13, and in order to guarantee the lubricated of bearing 13, there is a seal ring 11 in the outside of bearing housing 12 upper bearing (metal)s 13.
When pump ran well, medium entered from the import of the pump housing 1, because impeller 2 effects, medium is discharged from outlet, and sub-propeller 19 is washed into outlet with some solid particles.When pump is running well, electromagnet 6 energisings, armature 7 is sucked back, and rear sealing matrix 15 and front sealing matrix 17 are pulled open, and the medium that is leaked to the pump back cavity is discharged to outlet by sub-propeller 19, and some solid particles also are discharged from.When pump shuts down; the electromagnet outage; armature 7 is by spring reset; rear sealing matrix 15 and front sealing matrix 17 is because the sucking action of within it rear permanent magnet 16 of dress, front permanent magnet 18 and closure; play the seal action when shutting down; medium can be because of shutdown, and sub-propeller 19 is not worked and revealed.This is inflammable to carrying, explosive, deep-etching, hypertoxic medium are extremely important.
Claims (1)
1. a magnetic sealing device for centrifugal pump is characterized in that, described magnetic sealing device comprises electromagnet (6), armature (7), rear sealing matrix (15), rear permanent magnet (16), front sealing matrix (17), front permanent magnet (18), sub-propeller (19); Wherein:
Pump cover (21) is fixed on the pump housing (1), and magnetic pole circle (5) is fixed on the pump cover (21), and electromagnet matrix (3) is fixed on the magnetic pole circle (5); Sub-propeller (19) is installed between pump cover (21) and the electromagnet matrix (3);
Electromagnet (6) is installed in the electromagnet matrix (3), and electromagnet matrix (3) is fixed on the magnetic pole circle (5); Armature (7) is installed on the fixed magnetizer (8) by positioning screwn;
Front sealing matrix (17) and rear sealing matrix (15) are positioned at and rotate between magnet case (9) and the sub-propeller (19), rear permanent magnet (16) is arranged in the rear sealing matrix (15), front permanent magnet (18) is arranged in the front sealing matrix (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110199973 CN102889236A (en) | 2011-07-18 | 2011-07-18 | Magnetic sealing device for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110199973 CN102889236A (en) | 2011-07-18 | 2011-07-18 | Magnetic sealing device for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102889236A true CN102889236A (en) | 2013-01-23 |
Family
ID=47532865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110199973 Pending CN102889236A (en) | 2011-07-18 | 2011-07-18 | Magnetic sealing device for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102889236A (en) |
-
2011
- 2011-07-18 CN CN 201110199973 patent/CN102889236A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130123 |