CN107975490B - Electromagnetic type secondary sealing axial flow pump - Google Patents
Electromagnetic type secondary sealing axial flow pump Download PDFInfo
- Publication number
- CN107975490B CN107975490B CN201711429102.5A CN201711429102A CN107975490B CN 107975490 B CN107975490 B CN 107975490B CN 201711429102 A CN201711429102 A CN 201711429102A CN 107975490 B CN107975490 B CN 107975490B
- Authority
- CN
- China
- Prior art keywords
- ring assembly
- sealing
- pump shaft
- pump
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 99
- 230000003068 static effect Effects 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings 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
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories 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
- F04D3/00—Axial-flow pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention relates to the field of water pump sealing, in particular to an electromagnetic secondary sealing axial flow pump, which comprises a pump shaft and a secondary sealing device, wherein the pump shaft is perpendicular to a horizontal plane, the secondary sealing device is sleeved on the pump shaft, a secondary sealing cavity is formed by surrounding the pump shaft, an electromagnetic driver, a stationary ring component fixedly connected to the inner side wall of the secondary sealing cavity in a surrounding manner and a movable ring component movably sleeved on the pump shaft are arranged in the secondary sealing cavity, and the movable ring component can slide on the pump shaft along the axial direction of the pump shaft; the sealing end face of the static ring assembly and the sealing end face of the moving ring assembly are oppositely arranged, a gap is arranged between the sealing end face of the static ring assembly and the sealing end face of the moving ring assembly, and the moving ring assembly is located below the axial direction of the pump shaft of the static ring assembly. According to the invention, the pump shaft is perpendicular to the horizontal plane, the movable ring assembly is movably sleeved on the pump shaft, and under the condition that the pump body is free from leakage, the movable ring assembly is far away from the static ring assembly due to the action of gravity, so that the movable ring assembly and the static ring assembly are prevented from meaningless loss.
Description
Technical Field
The invention relates to the field of water pump sealing, in particular to an electromagnetic type secondary sealing axial flow pump.
Background
The movable ring and the static ring of the secondary sealing device are generally in a mutually separated state, and the secondary sealing device can form secondary sealing only when the medium leakage occurs in the original sealing structure of the pump body, namely the movable ring and the static ring are clung together to generate friction. The traditional secondary sealing device generally adopts elastic elements such as springs to separate the movable ring from the static ring so as to avoid wearing the movable ring and the static ring of the secondary sealing device when the pump body normally operates, but the elastic elements such as the springs deform and even are corroded to be damaged after long-time use, and at the moment, the movable ring and the static ring can not be separated by the elastic elements, so that the movable ring or the static ring is worn meaninglessly.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an electromagnetic type secondary sealing axial flow pump, wherein a pump shaft of the electromagnetic type secondary sealing axial flow pump is perpendicular to a horizontal plane, a movable ring assembly is movably sleeved on the pump shaft, and the movable ring assembly is far away from a static ring assembly under the action of gravity under the condition that a pump body is free from leakage, so that the two cannot generate meaningless loss.
The invention provides an electromagnetic type secondary sealing axial flow pump which comprises a pump shaft and a secondary sealing device, wherein the pump shaft is perpendicular to a horizontal plane, the secondary sealing device is sleeved on the pump shaft, a secondary sealing cavity is formed by surrounding the pump shaft, an electromagnetic driver, a stationary ring component fixedly connected to the inner side wall of the secondary sealing cavity in a surrounding manner and a movable ring component movably sleeved on the pump shaft are arranged in the secondary sealing cavity, and the movable ring component can slide on the pump shaft along the axial direction of the pump shaft; the sealing end face of the stationary ring assembly and the sealing end face of the movable ring assembly are oppositely arranged, a gap is arranged between the sealing end face of the stationary ring assembly and the sealing end face of the movable ring assembly, and the movable ring assembly is positioned below the stationary ring assembly in the axial direction of the pump shaft; when the electromagnetic drive is energized, the electromagnetic drive attracts or repels the moving ring assembly, forcing the moving ring assembly toward and against the stationary ring assembly.
Preferably, the novel sealing device further comprises a pump body, wherein the pump body is provided with a water inlet and a water outlet, and the water inlet is arranged opposite to the outer side wall of the original sealing movable ring of the pump body.
Preferably, the electromagnetic drive is located at the atmospheric end of the stationary and moving ring assemblies.
Preferably, a pin is arranged on the outer side wall of the pump shaft, a limit groove is arranged on the inner side wall of the movable ring assembly, and the pin is embedded in the limit groove.
Preferably, the sealing end face of the static ring assembly is provided with a static sealing ring, the sealing end face of the moving ring assembly is provided with a moving sealing ring, and the static sealing ring and the moving sealing ring are oppositely arranged and the gap is arranged between the static sealing ring and the moving sealing ring.
Preferably, the pump body is provided with a water inlet pipe connected with the water inlet and a water outlet pipe connected with the water outlet, and the water outlet pipe is communicated with the water inlet pipe through a liquid pumping device.
The pump shaft of the electromagnetic secondary sealing axial flow pump is perpendicular to the horizontal plane, the movable ring component is movably sleeved on the pump shaft, the movable ring component can slide on the pump shaft along the axial direction of the pump shaft, the sealing end face of the stationary ring component and the sealing end face of the movable ring component are oppositely arranged, a gap is arranged between the sealing end face and the sealing end face, and under the condition that the sealing structure of the pump body is free from leakage, the movable ring component is far away from the stationary ring component due to the action of gravity, so that the movable ring component and the stationary ring component are ensured not to generate nonsensical abrasion in a normal state.
Drawings
FIG. 1 is a schematic overall structure of an electromagnetic secondary seal axial flow pump according to an embodiment of the present invention;
fig. 2 is a schematic partial structure of an electromagnetic secondary seal axial flow pump according to an embodiment of the present invention.
1, A pump shaft; 11. a pin; 2. a secondary sealing device; 3. a secondary seal chamber; 4. an electromagnetic driver; 5. a stationary ring assembly; 51. a sealing end surface of the stationary ring assembly; 52. a static seal ring; 6. a moving ring assembly; 61. sealing end surfaces of the movable ring assemblies; 62. a dynamic seal ring; 63. a limit groove; 7. a void; 8. a pump body; 81. a water inlet; 82. a water outlet; 83. a primary seal ring; 84. an original sealing stationary ring; 85. a water inlet pipe; 86. and a water outlet pipe.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the electromagnetic secondary sealing axial flow pump of the invention is schematically shown, and comprises a pump shaft 1 arranged perpendicular to a horizontal plane and a secondary sealing device 2 sleeved on the pump shaft 1, wherein the secondary sealing device 2 and the pump shaft 1 enclose a secondary sealing cavity 3 arranged around the pump shaft 1, an electromagnetic driver 4, a stationary ring assembly 5 fixedly connected to the inner side wall of the secondary sealing cavity 3 in a surrounding manner and a movable ring assembly 6 movably sleeved on the pump shaft 1 are arranged in the secondary sealing cavity 3, and the movable ring assembly 6 can slide on the pump shaft 1 along the axial direction of the pump shaft 1; the sealing end surface 51 of the stationary ring assembly and the sealing end surface 61 of the movable ring assembly are oppositely arranged, a gap 7 is arranged between the sealing end surface 51 and the sealing end surface 61, and the movable ring assembly 6 is positioned below the stationary ring assembly 5 in the axial direction of the pump shaft 1; when the electromagnetic driver 4 is not electrified, the movable ring assembly 6 is far away from the static ring assembly 5 under the action of gravity, friction is not generated between the movable ring assembly 6 and the static ring assembly 5 at the moment, abrasion is not generated, when the electromagnetic driver 4 is electrified, the electromagnetic driver 4 attracts or repels the movable ring assembly 6, the movable ring assembly 6 is forced to move towards the static ring assembly 5 and cling to the static ring assembly 5, friction is generated between the movable ring assembly 6 and the static ring assembly 5, and secondary sealing is formed, so that further leakage of a medium is prevented. Because the moving trend of the moving ring assembly 6 away from the static ring assembly 5 under the action of gravity, elastic elements such as springs and the like are not needed to be arranged between the moving ring assembly 6 and the static ring assembly 5, so that the moving ring assembly 6 and the static ring assembly 5 can be kept separated from each other when the original sealing structure of the pump body 8 is not leaked. The elastic members such as springs and the like are prevented from being damaged and invalid after being used for a long time, and the movable ring assembly 6 and the static ring assembly 5 cannot be separated from each other by the elastic members to generate nonsensical mutual friction.
The pump body 8 of the axial flow pump is provided with a water inlet 81 and a water outlet 82, the water inlet 81 and the outer side wall of the primary sealing moving ring 83 of the pump body 8 are oppositely arranged, and a medium introduced from the water inlet 81 is used for cooling and lubricating the primary sealing moving ring 83 so as to ensure the sealing performance of the primary sealing moving ring 83 and the primary sealing static ring 84. Further, the pump body 8 is provided with a water inlet pipe 85 connected with the water inlet 81 and a water outlet pipe 86 connected with the water outlet 82, and the water outlet pipe 86 is communicated with the water inlet pipe 85 through a liquid pumping device (not shown), so that the medium for cooling and lubricating the primary sealing movable ring 83 and the static ring can be recycled, and resources are not wasted.
In order to optimize the structure of the axial flow pump, the electromagnetic driver 4 is positioned at the atmosphere end of the static ring assembly 5 and the moving ring assembly 6, and the arrangement has the advantages that when the medium leaks and the static ring assembly 5 and the moving ring assembly 6 form secondary sealing, the moving ring assembly 6 and the static ring assembly 5 isolate the medium from the electromagnetic driver 4, at the moment, the outside of the electromagnetic driver 4 is not required to be additionally provided with a medium protection layer, and the electromagnetic driver 4 is arranged at the atmosphere ends of the static ring assembly 5 and the moving ring assembly 6, so that the electromagnetic driver 4 is convenient to maintain and replace. In addition, be equipped with pin 11 on the lateral wall of pump shaft 1, correspondingly, be equipped with spacing groove 63 on the inside wall of moving ring subassembly 6, pin 11 inlays and locates in spacing groove 63, and the cooperation of pin 11 and spacing groove 63 makes moving ring subassembly 6 can follow pump shaft 1 rotation steadily. The static seal ring 52 is arranged on the seal end face 51 of the static ring assembly, the movable seal ring 62 is arranged on the seal end face 61 of the movable ring assembly, the static seal ring 52 and the movable seal ring 62 are oppositely arranged and are provided with a gap 7 therebetween, the static seal ring 52 and the movable seal ring 62 are preferably made of rubber materials, better sealing performance is achieved, the static seal ring 52 is detachably connected to the seal end face 51 of the static ring assembly, and the movable seal ring 62 is detachably connected to the seal end face 61 of the movable ring assembly so as to facilitate detachment and maintenance.
In summary, the pump shaft 1 of the electromagnetic secondary sealed axial flow pump of the present invention is disposed perpendicular to a horizontal plane, and the moving ring assembly 6 is movably sleeved on the pump shaft 1, wherein the moving ring assembly 6 can slide on the pump shaft 1 along the axial direction of the pump shaft 1, the sealing end surface 51 of the stationary ring assembly and the sealing end surface 61 of the moving ring assembly are disposed opposite to each other, and a gap 7 is disposed between the sealing end surface 51 of the stationary ring assembly and the sealing end surface 61 of the moving ring assembly, and under the condition that the sealing structure of the pump body 8 itself is not leaked, the moving ring assembly 6 is far away from the stationary ring assembly 5 due to the action of gravity, so that no meaningless abrasion of the moving ring assembly 6 and the stationary ring assembly 5 can be ensured in normal state.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (3)
1. The electromagnetic type secondary sealing axial flow pump is characterized by comprising a pump shaft and a secondary sealing device, wherein the pump shaft is perpendicular to a horizontal plane, the secondary sealing device is sleeved on the pump shaft, a secondary sealing cavity is formed by surrounding the pump shaft, an electromagnetic driver, a stationary ring component fixedly connected to the inner side wall of the secondary sealing cavity in a surrounding manner and a movable ring component movably sleeved on the pump shaft are arranged in the secondary sealing cavity, and the movable ring component can slide on the pump shaft along the axial direction of the pump shaft; the sealing end face of the stationary ring assembly and the sealing end face of the movable ring assembly are oppositely arranged, a gap is arranged between the sealing end face of the stationary ring assembly and the sealing end face of the movable ring assembly, and the movable ring assembly is positioned below the stationary ring assembly in the axial direction of the pump shaft; when the electromagnetic driver is powered on, the electromagnetic driver attracts or repels the moving ring assembly, forcing the moving ring assembly to move towards and cling to the stationary ring assembly;
the outer side wall of the pump shaft is provided with a pin, the inner side wall of the movable ring assembly is provided with a limit groove, and the pin is embedded in the limit groove;
the sealing end face of the static ring assembly is provided with a static sealing ring, the sealing end face of the movable ring assembly is provided with a movable sealing ring, the static sealing ring and the movable sealing ring are oppositely arranged, and the gap is arranged between the static sealing ring and the movable sealing ring;
the novel sealing device is characterized by further comprising a pump body, wherein the pump body is provided with a water inlet and a water outlet, and the water inlet is arranged opposite to the outer side wall of the original sealing movable ring of the pump body.
2. The electromagnetic secondary sealed axial flow pump of claim 1 wherein the electromagnetic drive is located at the atmospheric end of the stationary and moving ring assemblies.
3. The electromagnetic type secondary sealing axial flow pump according to claim 1, wherein a water inlet pipe connected with the water inlet and a water outlet pipe connected with the water outlet are arranged on the pump body, and the water outlet pipe is communicated with the water inlet pipe through a pump liquid device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429102.5A CN107975490B (en) | 2017-12-23 | 2017-12-23 | Electromagnetic type secondary sealing axial flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429102.5A CN107975490B (en) | 2017-12-23 | 2017-12-23 | Electromagnetic type secondary sealing axial flow pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107975490A CN107975490A (en) | 2018-05-01 |
| CN107975490B true CN107975490B (en) | 2024-04-23 |
Family
ID=62007625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711429102.5A Active CN107975490B (en) | 2017-12-23 | 2017-12-23 | Electromagnetic type secondary sealing axial flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107975490B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3955822A (en) * | 1975-03-28 | 1976-05-11 | Dresser Industries, Inc. | Rod pump stuffing box control system |
| US4086029A (en) * | 1976-12-06 | 1978-04-25 | United States Steel Corporation | Method and apparatus for flushing the plunger of a positive displacement pump |
| CN101649834A (en) * | 2009-09-08 | 2010-02-17 | 合肥通用机械研究院 | Hydrostatic and hydrodynamic combined type three-stage mechanical seal device for nuclear main pump |
| CN202228419U (en) * | 2011-09-23 | 2012-05-23 | 杨兴敏 | Electromagnetic seal fluid pump |
| CN203836210U (en) * | 2014-05-14 | 2014-09-17 | 宁波东联密封件有限公司 | Sealing structure of water pump |
| CN203948290U (en) * | 2014-06-03 | 2014-11-19 | 重庆市合川排水有限公司 | Mechanical seal device |
| CN104564790A (en) * | 2015-01-07 | 2015-04-29 | 丹东克隆先锋泵业有限公司 | Automatic driving shaft sealing magnetic pump |
| CN207740231U (en) * | 2017-12-23 | 2018-08-17 | 广州市白云泵业集团有限公司 | The axial-flow pump of electromagnetic type secondury sealing |
-
2017
- 2017-12-23 CN CN201711429102.5A patent/CN107975490B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3955822A (en) * | 1975-03-28 | 1976-05-11 | Dresser Industries, Inc. | Rod pump stuffing box control system |
| US4086029A (en) * | 1976-12-06 | 1978-04-25 | United States Steel Corporation | Method and apparatus for flushing the plunger of a positive displacement pump |
| CN101649834A (en) * | 2009-09-08 | 2010-02-17 | 合肥通用机械研究院 | Hydrostatic and hydrodynamic combined type three-stage mechanical seal device for nuclear main pump |
| CN202228419U (en) * | 2011-09-23 | 2012-05-23 | 杨兴敏 | Electromagnetic seal fluid pump |
| CN203836210U (en) * | 2014-05-14 | 2014-09-17 | 宁波东联密封件有限公司 | Sealing structure of water pump |
| CN203948290U (en) * | 2014-06-03 | 2014-11-19 | 重庆市合川排水有限公司 | Mechanical seal device |
| CN104564790A (en) * | 2015-01-07 | 2015-04-29 | 丹东克隆先锋泵业有限公司 | Automatic driving shaft sealing magnetic pump |
| CN207740231U (en) * | 2017-12-23 | 2018-08-17 | 广州市白云泵业集团有限公司 | The axial-flow pump of electromagnetic type secondury sealing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107975490A (en) | 2018-05-01 |
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