CN107171478A - A kind of mechanical seal structure of submersible motor - Google Patents
A kind of mechanical seal structure of submersible motor Download PDFInfo
- Publication number
- CN107171478A CN107171478A CN201710538420.9A CN201710538420A CN107171478A CN 107171478 A CN107171478 A CN 107171478A CN 201710538420 A CN201710538420 A CN 201710538420A CN 107171478 A CN107171478 A CN 107171478A
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- CN
- China
- Prior art keywords
- ring
- submersible motor
- closure
- grinding block
- rotating shaft
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of mechanical seal structure of submersible motor, belongs to submersible motor technical field.The present invention includes rotating shaft, submersible motor body, seal receptacle, sand-throwing ring, closure, Bearing housing and bearing, seal receptacle is arranged on submersible motor body, closure is fixedly mounted on seal receptacle by bolt and spring washer circle, rotating shaft is arranged in seal receptacle by bearings, and positioned by Bearing housing, the upper end of rotating shaft coordinates through closure with sand-throwing ring is installed, and the mechanical sealing assembly for motor seal is additionally provided between rotating shaft and closure.Using the submersible motor of the mechanical seal structure of the present invention, can have effectively prevents oil spill from going out the immersion with water, improves the product quality of submersible motor, enhances the service life of submersible motor.
Description
Technical field
The present invention relates to a kind of sealing structure of shaft end of submersible motor, belong to submersible motor technical field.
Background technology
Submersible motor is that various types of immersible pumps are supporting, is integrally formed with pump, in the sewage that various water quality are slipped into for a long time
Operation, severe working environment determines that its sealing structure and conventional motor have larger difference.
Submersible motor is by the rotor on axle, the stator in casing, gland seal device, sand-proof device and its correlation zero
Part.There are some weak points in existing submersible motor：By tubular shell and up and down, end cap is constituted shell, solid by bolt
It is fixed, seal relatively difficult；Thrust bearing is mounted in the lower end of axle, is not easy to dismounting；Gland seal device sand prevention, waterproof effect is poor, work as pole
Small graininess foreign matter entrance can cause axle envelope failure, and water, which enters in motor, causes burn-down of electric motor.
The content of the invention
The invention aims to solve above-mentioned technical problem, and then provide a kind of mechanical seal knot of submersible motor
Structure.
Technical scheme：
A kind of mechanical seal structure of submersible motor include rotating shaft, submersible motor body, seal receptacle, sand-throwing ring, closure,
Bearing housing and bearing, described seal receptacle are arranged on submersible motor body, and closure is fixed by bolt and spring washer circle
On seal receptacle, rotating shaft is arranged in seal receptacle by bearings, and is positioned by Bearing housing, rotating shaft it is upper
End coordinates through closure and sand-throwing ring is installed, and mechanical sealing assembly is additionally provided between rotating shaft and closure；
Described mechanical sealing assembly includes drive sleeve, Packing spring, pushing block, dynamic grinding block, static grinding block, stationary ring and rotating ring,
Described static grinding block is sleeved in rotating shaft, and the upper end of static grinding block is fixed on closure by stop pin, and the lower end of static grinding block adds
Work has notch, and described stationary ring insertion is in the notch of static grinding block lower end, and stationary ring lower end, which is provided with, is sleeved on moving in rotating shaft
Ring, rotating ring lower end is provided with pushing block, and described pushing block is axially extended to form installation step, and the upper end of described dynamic grinding block is sleeved on
On rotating ring, the lower end of dynamic grinding block is arranged on the installation step of pushing block, and the lower end of described pushing block is provided with drive sleeve, drive sleeve
Lower end act against the bearing inner race of bearing, the lower end of drive sleeve axially extends to form installation step, described Packing spring
Drive sleeve outer ring is sleeved on, Packing spring is acted against on the installation step of pushing block and drive sleeve respectively.
It is preferred that：It is provided with annular oil scraper ring, the annular oil scraper ring of static grinding block insertion, and passes through on the inside of described closure
Stop pin and closure are fixedly mounted, be also machined with break slot at one, break slot on described static grinding block body be provided with it is quiet
Abrading block sealing ring.
It is preferred that：Described being sleeved between the rotating ring in rotating shaft and pushing block is additionally provided with dynamic grinding block sealing ring, described
Dynamic grinding block sealing ring is arranged in dynamic grinding block.
It is preferred that：Formed between described closure and rotating shaft in mechanical seal cavity, mechanical seal cavity filled with anti-
Water-stop damping oil.
It is preferred that：Plug cock hole is machined with described closure, described plug cock hole is sealed by rubber cushion and plug cock.
It is preferred that：Described closure and the junction of seal receptacle are provided with seal cap sealing circle, described seal receptacle with
The junction of submersible motor body is provided with upper end cover sealing ring.
The invention has the advantages that：The present invention a kind of submersible motor mechanical seal structure by stationary ring with it is quiet
The face way of contact of abrading block is fitted close, and Reseaable lid is provided with static grinding block sealing ring with static grinding block, can not only reach
Good sealing effectiveness, at the same between stationary ring and static grinding block due to the heat that friction is produced can also be quickly by annular gear oil
Ring passes to closure, and then heat is dissipated, so that mechanical sealing assembly itself cooling effect is excellent；In rotating shaft and
The internal pressure of mechanical seal cavity is effectively enhanced in the mechanical seal cavity of closure formation filled with waterproof sealing damping oil, really
The sealing property of mechanical sealing assembly is protected, using the submersible motor of the mechanical seal structure of the present invention, can have effectively prevents oil
The immersion with water is overflowed, the product quality of submersible motor is improved, enhances the service life of submersible motor.
Brief description of the drawings
Fig. 1 is a kind of mechanical seal structure view of submersible motor；
1- rotating shafts in figure, 2- submersible motor bodies, 3- seal receptacles, 4- sand-throwing rings, 5- closures, 6- Bearing housings, 7- axles
Hold, 8- mechanical sealing assemblies, 9- drive sleeves, 10- Packing springs, 11- pushing blocks, 12- dynamic grinding blocks, 13- static grinding blocks, 14- static grinding blocks
Sealing ring, 15- stationary rings, 16- rotating rings, 17- stop pins, 18- dynamic grinding block sealing rings, 19- tool sealing cavities, 20- plug cocks hole, 21-
Rubber cushion, 22- plug cocks, 23- seal cap sealing circles, 24- upper end cover sealing rings, 25- annular oil scraper rings.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1, a kind of submersible motor of present embodiment it is mechanical close
Seal structure includes rotating shaft 1, submersible motor body 2, seal receptacle 3, sand-throwing ring 4, closure 5, Bearing housing 6 and bearing 7, described
Seal receptacle 3 is arranged on submersible motor body 2, and closure 5 is fixedly mounted on seal receptacle 3 by bolt and spring washer circle, is turned
Axle 1 is arranged in seal receptacle 3 by the support of bearing 7, and is positioned by Bearing housing 6, and the upper end of rotating shaft 1 passes through closure
5 coordinate installation with sand-throwing ring 4, and mechanical sealing assembly 8 is additionally provided between rotating shaft 1 and closure 5；Described mechanical seal group
Part 8 includes drive sleeve 9, Packing spring 10, pushing block 11, dynamic grinding block 12, static grinding block 13, stationary ring 15 and rotating ring 16, described quiet mill
Block 13 is sleeved in rotating shaft 1, and the upper end of static grinding block 13 is fixed on closure 5 by stop pin 17, and the lower end of static grinding block 13 adds
Work has notch, and the described insertion of stationary ring 15 is in the notch of the lower end of static grinding block 13, and the lower end of stationary ring 15 is provided with and is sleeved on rotating shaft 1
On rotating ring 16, the lower end of rotating ring 16 is provided with pushing block 11, and described pushing block 11 axially extends to form installation step, described dynamic mill
The upper end of block 12 is sleeved on rotating ring 16, and the lower end of dynamic grinding block 12 is arranged on the installation step of pushing block 11, described pushing block 11
Lower end be provided with drive sleeve 9, the lower end of drive sleeve 9 acts against the bearing inner race of bearing 7, and the lower end of drive sleeve 9 is prolonged vertically
Stretch to form installation step, described Packing spring 10 is sleeved on the outer ring of drive sleeve 9, Packing spring 10 acts against the He of pushing block 11 respectively
On the installation step of drive sleeve 9.It is arranged such, mechanical seal chamber 19, the mechanical seal chamber is formed between closure 5 and rotating shaft 1
Mechanical sealing assembly 8 is provided with 19, mechanical seal mode of the invention is realized by two friction pairs of rotating ring and stationary ring, wherein
One friction pair is made up of stationary ring 15 and static grinding block 9, and static grinding block 9 forms static friction, and static grinding block 9 and closure with rotating shaft
5 annular oil scraper ring 25 coordinates, and the static grinding block sealing ring 14 that annular oil scraper ring 25 is provided with the contact position of static grinding block 9 is effectively realized
First of sealing of submersible motor；Another friction pair is the sealing knot rotated around the axis of dynamic grinding block 8 and the formation of rotating ring 16
Structure, dynamic grinding block sealing ring 18 is set in dynamic grinding block 8, passes through the tight fit of dynamic grinding block 8, rotating ring 16 and dynamic grinding block sealing ring 18
Second sealing is formd under effect.
The mechanical seal of the present invention realizes that the material of friction pair uses YG6, and structure novelty is closed mainly by two friction pairs
Reason, using pessure difference balancing device, pressure difference is small, and oily amount of leakage is few, and diving depth is unrestricted；It is provided with closure outer end and gets rid of sand
Ring, reduces silt to sealedly harm；Mechanical seal ring reasonable stress；Dynamic and static ring insert structure rationally, there is originality, rubs
Pair is difficult temperature distortion, and Reliability of Mechanical Seal is high, and leakage rate is less than 0.1 ml/hour.Rig test result leakage rate is
0.0272 milli l/h, product quality is stable, and sealing effectiveness has reached advanced level, leading position is occupy at home.
Embodiment two：Illustrate present embodiment with reference to Fig. 1, a kind of submersible motor of present embodiment it is mechanical close
The inner side of closure 5 described in seal structure is provided with annular oil scraper ring 22, and static grinding block 13 is embedded in annular oil scraper ring 22, and by anti-
Ship and resell on another market and 17 be fixedly mounted with closure 5, be also machined with break slot at one, break slot and be provided with the described body of static grinding block 13
Static grinding block sealing ring 14.It is arranged such, static grinding block sealing ring 14 can be sealed effectively, prevents moisture from penetrating into diving electricity from static grinding block 13
Inside machine.
Embodiment three：Illustrate present embodiment with reference to Fig. 1, a kind of submersible motor of present embodiment it is mechanical close
The rotating ring 16 being sleeved in rotating shaft 1 described in seal structure and dynamic grinding block sealing ring 18 is additionally provided between pushing block 11, described is dynamic
Abrading block sealing ring 18 is arranged in dynamic grinding block 12.It is arranged such, the is formed under the tight fit of dynamic grinding block sealing ring 18 and rotating shaft 1
Two seal structures, it is to avoid moisture immerses motor internal from the rotating shaft wall of rotating shaft 1.
Embodiment four：Illustrate present embodiment with reference to Fig. 1, a kind of submersible motor of present embodiment it is mechanical close
Formed between closure 5 and rotating shaft 1 described in seal structure and anti-watertight is filled with mechanical seal cavity 19, mechanical seal cavity 19
Seal damping oil.It is arranged such, it is effective filled with waterproof sealing damping oil in the mechanical seal cavity of rotating shaft and closure formation
The internal pressure of mechanical seal cavity is enhanced, causes the gap of mechanical sealing assembly to wait until filling in the presence of internal pressure, it is ensured that machine
The sealing property of tool seal assembly, using the submersible motor of the mechanical seal structure of the present invention, can have effectively prevents oil spill from going out
With the immersion of water.
Embodiment five：Illustrate present embodiment with reference to Fig. 1, a kind of submersible motor of present embodiment it is mechanical close
Plug cock hole 20 is machined with closure 5 described in seal structure, described plug cock hole 20 is sealed by rubber cushion 21 and plug cock 22.So
Set, the filling waterproof sealing damping oil into sealing cavity can be realized by plug cock hole 20.
Embodiment six：Illustrate present embodiment with reference to Fig. 1, a kind of submersible motor of present embodiment it is mechanical close
The junction of closure 5 and seal receptacle 3 described in seal structure is provided with seal cap sealing circle 23, described seal receptacle 3 and diving
The junction of motor body 2 is provided with upper end cover sealing ring 24.It is arranged such, seal cap sealing circle 23 and upper end cover sealing ring 24
Good sealing effectiveness can be played to submersible motor.
Present embodiment is the exemplary illustration to this patent, does not limit its protection domain, people in the art
Member can also be changed to its part, as long as no the Spirit Essence beyond this patent, all in the protection domain of this patent.
Claims (6)
1. a kind of mechanical seal structure of submersible motor, it is characterised in that：Including rotating shaft (1), submersible motor body (2), sealing
Seat (3), sand-throwing ring (4), closure (5), Bearing housing (6) and bearing (7), described seal receptacle (3) are arranged on submersible motor
On body (2), closure (5) is fixedly mounted on seal receptacle (3) by bolt and spring washer circle, and rotating shaft (1) passes through bearing (7)
Support is arranged in seal receptacle (3), and is positioned by Bearing housing (6), the upper end of rotating shaft (1) through closure (5) and
Sand-throwing ring (4), which coordinates, to be installed, and mechanical sealing assembly (8) is additionally provided between rotating shaft (1) and closure (5)；
Described mechanical sealing assembly (8) includes drive sleeve (9), Packing spring (10), pushing block (11), dynamic grinding block (12), quiet mill
Block (13), stationary ring (15) and rotating ring (16), described static grinding block (13) are sleeved in rotating shaft (1), and the upper end of static grinding block (13) leads to
Cross stop pin (17) to be fixed on closure (5), the lower end of static grinding block (13) is machined with notch, the embedded peace of described stationary ring (15)
In the notch of static grinding block (13) lower end, stationary ring (15) lower end is provided with the rotating ring (16) being sleeved in rotating shaft (1), rotating ring (16)
Lower end is provided with pushing block (11), and described pushing block (11) axially extends to form installation step, the upper end of described dynamic grinding block (12)
It is sleeved on rotating ring (16), the lower end of dynamic grinding block (12) is arranged on the installation step of pushing block (11), described pushing block (11)
Lower end is provided with drive sleeve (9), and the lower end of drive sleeve (9) acts against the bearing inner race of bearing (7), the lower end edge of drive sleeve (9)
Axially extending formation installation step, described Packing spring (10) is sleeved on drive sleeve (9) outer ring, and Packing spring (10) is pushed up respectively
On the installation step for leaning against pushing block (11) and drive sleeve (9).
2. a kind of mechanical seal structure of submersible motor according to claim 1, it is characterised in that：Described closure
(5) inner side is provided with annular oil scraper ring (25), in the embedded annular oil scraper ring (25) of static grinding block (13), and by stop pin (17) with
Closure (5) is fixedly mounted, and is also machined with break slot at one, break slot on described static grinding block (13) body and is provided with quiet mill
Block sealing ring (14).
3. a kind of mechanical seal structure of submersible motor according to claim 1, it is characterised in that：Described being sleeved on turns
Dynamic grinding block sealing ring (18), described dynamic grinding block sealing ring are additionally provided between rotating ring (16) and pushing block (11) on axle (1)
(18) it is arranged in dynamic grinding block (12).
4. a kind of mechanical seal structure of submersible motor according to claim 1, it is characterised in that：Described closure
(5) formed between rotating shaft (1) and waterproof sealing damping oil is filled with mechanical seal cavity (19), mechanical seal cavity (19).
5. a kind of mechanical seal structure of submersible motor according to claim 1, it is characterised in that：Described closure
(5) plug cock hole (20) is machined with, described plug cock hole (20) is sealed by rubber cushion (21) and plug cock (22).
6. a kind of mechanical seal structure of submersible motor according to claim 1, it is characterised in that：Described closure
(5) seal cap sealing circle (23), described seal receptacle (3) and submersible motor body (2) are installed with the junction of seal receptacle (3)
Junction upper end cover sealing ring (24) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538420.9A CN107171478A (en) | 2017-07-04 | 2017-07-04 | A kind of mechanical seal structure of submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538420.9A CN107171478A (en) | 2017-07-04 | 2017-07-04 | A kind of mechanical seal structure of submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107171478A true CN107171478A (en) | 2017-09-15 |
Family
ID=59822678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710538420.9A Pending CN107171478A (en) | 2017-07-04 | 2017-07-04 | A kind of mechanical seal structure of submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107171478A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306440A (en) * | 2018-03-26 | 2018-07-20 | 合肥恒大江海泵业股份有限公司 | A kind of sealing structure of shaft end and encapsulating method of dry-type submersible motor |
| CN109861434A (en) * | 2018-12-21 | 2019-06-07 | 中国船舶重工集团公司第七一0研究所 | A kind of oil pressure balance electric motor motive sealing device |
| CN113595306A (en) * | 2021-08-03 | 2021-11-02 | 合肥恒大江海泵业股份有限公司 | Self-balancing differential pressure type submersible motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201031800Y (en) * | 2007-04-24 | 2008-03-05 | 周建斌 | Submerged pump |
| CN201386691Y (en) * | 2009-04-22 | 2010-01-20 | 烟台瑞龙泵业制造有限公司 | Mechanical sealing device for pump being applicable to medium containing solid particles, effluent oil and sewage |
| CN106593930A (en) * | 2016-12-15 | 2017-04-26 | 上海工程技术大学 | Suspension type centrifugal pump |
-
2017
- 2017-07-04 CN CN201710538420.9A patent/CN107171478A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201031800Y (en) * | 2007-04-24 | 2008-03-05 | 周建斌 | Submerged pump |
| CN201386691Y (en) * | 2009-04-22 | 2010-01-20 | 烟台瑞龙泵业制造有限公司 | Mechanical sealing device for pump being applicable to medium containing solid particles, effluent oil and sewage |
| CN106593930A (en) * | 2016-12-15 | 2017-04-26 | 上海工程技术大学 | Suspension type centrifugal pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306440A (en) * | 2018-03-26 | 2018-07-20 | 合肥恒大江海泵业股份有限公司 | A kind of sealing structure of shaft end and encapsulating method of dry-type submersible motor |
| CN108306440B (en) * | 2018-03-26 | 2024-07-02 | 合肥恒大江海泵业股份有限公司 | Shaft end sealing structure and sealing method of dry submersible motor |
| CN109861434A (en) * | 2018-12-21 | 2019-06-07 | 中国船舶重工集团公司第七一0研究所 | A kind of oil pressure balance electric motor motive sealing device |
| CN113595306A (en) * | 2021-08-03 | 2021-11-02 | 合肥恒大江海泵业股份有限公司 | Self-balancing differential pressure type submersible motor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170915 |
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| RJ01 | Rejection of invention patent application after publication |