CN202228419U - Electromagnetic seal fluid pump - Google Patents
Electromagnetic seal fluid pump Download PDFInfo
- Publication number
- CN202228419U CN202228419U CN2011203590619U CN201120359061U CN202228419U CN 202228419 U CN202228419 U CN 202228419U CN 2011203590619 U CN2011203590619 U CN 2011203590619U CN 201120359061 U CN201120359061 U CN 201120359061U CN 202228419 U CN202228419 U CN 202228419U
- Authority
- CN
- China
- Prior art keywords
- pump
- seal
- electromagnetic
- ring
- seal ring
- 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.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 38
- 238000012856 packing Methods 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides an electromagnetic seal fluid pump, which comprises a pump body, a pump cover, a pump shaft, impellers and a bearing seat. A partition board divides a pump cavity into a work pump cavity and a pressure balance pump which are communicated through a shaft hole. A main impeller and an auxiliary impeller are respectively installed at the positions of the work pump cavity and the pressure balance cavity which are arranged on the pump shaft, fluid pressure generated by rotation of the auxiliary impeller is opposite to and not smaller than the fluid pressure generated by rotation of the main impeller, and a seal moving ring is arranged between the auxiliary impeller and the pump shaft seal. An electromagnetic seal mechanism is arranged in an inner cavity of the pump cover, the electromagnetic seal mechanism is formed by a seal static ring, an electromagnetic coil controlling the seal static ring to displace in the axial direction and a static seal ring return spring, and a seal static ring surface is matched with a moving seal ring arranged in the inner cavity of the pump cover. The electromagnetic seal fluid pump achieves the technical aim of throughout seal, has the advantages of being simple in structure, free of mechanical abrasion at the positions of the shaft seal, not prone to leak, good in seal effect and long in service life, and is particularly suitable for conveying of liquid media which are prone to crystallize and evacuate in a short time and contain particles.
Description
Technical field
The utility model relates to the chemical flow-process pump sealing mechanism.
Background technique
Chemical flow-process pump mainly includes chemical centrifugal pump, axial-flow pump, mixed flow pump, stream pump and torque flow pump etc.At present the chemical flow-process pump shaft seal structure mainly contains mechanical seal and two kinds of packing seals, and these two kinds of sealing configurations all need be accomplished in flowing medium, and the mechanical seal of dynamic and static ring rotary seal cooperation just must be in flowing medium; Get involved sealing by medium film, its sealing effect could perfectly embody, packing seal and axle or axle sleeve direct friction; Need medium to get involved too, when medium is evacuated, or pumping starts when initial; These two kinds of sealing configurations all can can't lubricate and cool off because of lacking flowing medium; Even the loss of seal effect, when especially containing the flowing medium of particulate matter such as crystalline solid in pumping, wearing and tearing are bigger, working life is short.
Summary of the invention
The goal of the invention of the utility model be to provide a kind of in a whole set of fluid pumping omnidistance electromagnetic sealing fluid pump with sealing function.The electromagnetic sealing fluid pump technological scheme that the present technique scheme provides; Its technological scheme is: a kind of electromagnetic sealing fluid pump; Comprise that the pump housing, pump cover, pump shaft, impeller and bearing holder constitute; Dividing plate is divided into work pump chamber and the pressure balance chamber that is communicated by the axis hole gap with pump chamber, in work pump chamber and pressure balance chamber place main impeller and sub-propeller is installed respectively on the pump shaft, and the hydrodynamic pressure that the sub-propeller turn produces and main impeller are on the contrary and be not less than the hydrodynamic pressure of main impeller turn generation; Be provided with the sealing rotating ring between sub-propeller and the pump shaft axle envelope; The pump cover inner chamber is provided with electromagnetic sealing mechanism, and electromagnetic sealing mechanism is made up of stationary seal ring, axially displaced electromagnetic coil and the stationary seal ring Returnning spring of control stationary seal ring, and the stationary seal ring anchor ring cooperates with pump cover inner chamber rotary packing ring.
The electromagnetic sealing fluid pump technological scheme that the utility model provides; When it is worked in pumping, mainly produce negative pressure by sub-propeller and offset the hydrodynamic pressure that comes from main impeller, this moment, electromagnetic sealing received the dynamic and static ring of electromagnetic attracting force separately; Form seal operation state without mechanical friction; When pump stopped, stationary seal ring and rotary packing ring in the control electromagnetic sealing mechanism were sealed and matched, and reach omnidistance sealing technique purpose.From above argumentation, the electromagnetic sealing fluid pump of present technique scheme especially is suitable as the conveying that contains crystalline solid or other particle and be prone to rarefied medium.It is a kind of formation simple, do not have machinery wearing and tearing, antileakaging canned pump, sealing effect is good, long service life especially is suitable as easy crystallization, contains particle, is prone to the FLUID TRANSPORTATION pump of finding time in short-term.
Description of drawings
Accompanying drawing is that one of this electromagnetic fluid canned pump is implemented the structure general assembly drawing; What label 5 among the figure and label 6 were represented respectively is two limit positions of stationary seal ring on pump shaft; Label 5 is the limit on the left position that is sealed and matched with the sealing rotating ring, and label 6 is for leaving the limit on the right-right-hand limit position of sealing rotating ring.
Embodiment
The disclosed electromagnetic sealing fluid pump of the utility model; Comprise that the pump housing 1, pump cover 8, pump shaft 9, impeller and bearing holder 10 constitute; The pump chamber that dividing plate 11 is constituted the pump housing 1 and pump cover 8 is separated into work pump chamber and the pressure balance chamber that the axis hole gap by dividing plate 11 communicates; Pumping fluid medium inlet opening 12 by central axis to feeding the work pump chamber; By the main impeller 2 pumping chemical industry flowing mediums of pump shaft 9, the opposite sub-propeller 3 of hydrodynamic pressure that produces with main impeller 2 turns is installed in pressure balance chamber on the pump shaft 9; On impeller design, sub-propeller 3 hydrodynamic pressures are answered a little higher than main impeller 2 hydrodynamic pressures; Be provided with the sealing rotating ring 4 of axle envelope between sub-propeller 3 and the pump shaft 9.The pump cover inner chamber is provided with electromagnetic sealing mechanism; Electromagnetic sealing mechanism is made up of stationary seal ring, axially displaced electromagnetic coil 7 and the stationary seal ring Returnning spring of control stationary seal ring; Be the outstanding structural feature that embodies; Also, structure is set so saved Returnning spring in the accompanying drawings because the setting of stationary seal ring Returnning spring structure is a simple General Construction.Stationary seal ring is fabricated to the face of being sealed and matched with sealing rotating ring 4 relative faces; Stationary seal ring is embedded with the permeability magnetic material inner core; Or be compounded with the permeability magnetic material skin; Make its electro magnetic field electromagnetic power that is controlled by electromagnetic coil 7, left and right sidesing shifting on pump shaft 9, the axle of accomplishing this pump different operating state in two axial limit positions seals sealing function.
The groundwork process of this electromagnetic sealing fluid pump is: the normal pumping work of flowing medium; Electromagnetic coil 7 energising work, stationary seal ring 5 is attracted under the electromagnetic force effect and moves to right, and promptly stationary seal ring moves to label 6 positions shown in the figure; Separate with the sealing surface of sealing rotating ring 4; The main impeller 2 rotation hydrodynamic pressures that pumping fluid produced offset with coaxial sub-propeller 3 hydrodynamic pressures on the contrary, and the hydrodynamic pressure of sub-propeller 3 is slightly larger than main impeller 3 hydrodynamic pressures, and axle seals and no longer bears hydrodynamic pressure; Thereby in pumping, axle envelope place does not have leakage, no sealing part abrasion.When pump is shut down, electromagnetic coil 7 outages, stationary seal ring 5 loses the electromagnetic attraction effect; At reseting elasticity effect lower shaft to moving to left; Be that stationary seal ring moves to label 5 positions shown in the figure, fit, realized the sealing purpose when pump is shut down with 4 end face seals of sealing rotating ring.
Claims (3)
1. electromagnetic sealing fluid pump; Comprise that the pump housing (1), pump cover (8), pump shaft (9), impeller and bearing holder (10) constitute; Dividing plate (11) is divided into pump chamber work pump chamber and the pressure balance chamber that is communicated by the axis hole gap; In work pump chamber and pressure balance chamber place main impeller (2) and sub-propeller (3) are installed respectively on the pump shaft; It is characterized in that hydrodynamic pressure that the sub-propeller turn produces is opposite and be not less than the hydrodynamic pressure that the main impeller turn produces with main impeller, be provided with between sub-propeller seals with the pump shaft axle and seal rotating ring (4) that the pump cover inner chamber is provided with electromagnetic sealing mechanism; Electromagnetic sealing mechanism is made up of stationary seal ring, axially displaced electromagnetic coil (7) and the stationary seal ring Returnning spring of control stationary seal ring, and the stationary seal ring anchor ring cooperates with pump cover inner chamber rotary packing ring.
2. electromagnetic sealing fluid pump according to claim 1 is characterized in that stationary seal ring is embedded with the permeability magnetic material inner core.
3. electromagnetic sealing fluid pump according to claim 1 is characterized in that stationary seal ring is compounded with the permeability magnetic material skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203590619U CN202228419U (en) | 2011-09-23 | 2011-09-23 | Electromagnetic seal fluid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203590619U CN202228419U (en) | 2011-09-23 | 2011-09-23 | Electromagnetic seal fluid pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228419U true CN202228419U (en) | 2012-05-23 |
Family
ID=46079006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203590619U Expired - Fee Related CN202228419U (en) | 2011-09-23 | 2011-09-23 | Electromagnetic seal fluid pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975490A (en) * | 2017-12-23 | 2018-05-01 | 广州市白云泵业集团有限公司 | The axial-flow pump of electromagnetic type secondury sealing |
-
2011
- 2011-09-23 CN CN2011203590619U patent/CN202228419U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975490A (en) * | 2017-12-23 | 2018-05-01 | 广州市白云泵业集团有限公司 | The axial-flow pump of electromagnetic type secondury sealing |
| CN107975490B (en) * | 2017-12-23 | 2024-04-23 | 广州市白云泵业集团有限公司 | Electromagnetic type secondary sealing axial flow pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171221 Address after: 118000 Liaoning Dandong hi tech Industrial Development Zone A-106 Patentee after: Dandong Sheng Hui petrochemical equipment Co., Ltd Address before: 163714 Xinghua village 2 District, Longfeng District, Daqing, Heilongjiang Province, No. 214 Co-patentee before: Liu Mengchun Patentee before: Yang Xingmin |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20190923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |