CN102195387B - Sealing structure of submersible pump - Google Patents
Sealing structure of submersible pump Download PDFInfo
- Publication number
- CN102195387B CN102195387B CN2011100675499A CN201110067549A CN102195387B CN 102195387 B CN102195387 B CN 102195387B CN 2011100675499 A CN2011100675499 A CN 2011100675499A CN 201110067549 A CN201110067549 A CN 201110067549A CN 102195387 B CN102195387 B CN 102195387B
- Authority
- CN
- China
- Prior art keywords
- isolated shield
- metallic seal
- rotor
- stator
- motor
- 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
Images
Landscapes
- Motor Or Generator Frames (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a sealing structure of a submersible pump, which is characterized in that a motor rotor (2) is three-dimensionally wrapped by a metal sealing isolation hood (4) which cannot be penetrated by gas molecules and is completely realized by using a welding process. The inverted cone-shaped bottom of the isolation hood (4) is provided with a motor shaft seal (7) part allowing liquid molecules to pass through. However, the liquid molecules can be supported by air in a cavity of the isolation hood (4), so that the liquid molecules are difficult to enter or less molecules are allowed to enter (the admitted liquid cannot be in contact with the motor rotor to cause the motor winding to be burnt) when passing through the shaft seal (7). The part of the isolation hood (4) between the rotor (2) and a stator (1) is made of a thin non-permeability material and is tightly matched with the inner ring circumference of the stator (1). By adopting the invention, the submersible pump can work in an underwater environment for a long time and can be always in an idle state. The cumulative time of the underwater disposable work and the idle state can be at least more than the level reached in the prior art.
Description
Technical field
The present invention relates to the hermetically-sealed construction technology of immersible pump.
Background technology
At present; The size specification various immersible pumps different with model emerge in an endless stream, and are the quite extensive and ripe a kind of power-equipments of purposes, and its deficiency is: the axle envelope place that during operation mainly is it is easily to its inner liquid of external leakage; And this leakage is for the liquid pump of its main part of conduct that constitutes immersible pump; Be inessential, and main problem is:, invade after the dragging motor of liquid pump in case this liquid that leaks takes care of the pence in the inside of this immersible pump; Will cause the damage of this motor, the result causes immersible pump to shut down.---mainly be to rely on the detachable type securing member of one type on soft nonmetal seal washer and screw thereof to realize usually for the sealing of immersible pump; If it is very conscientious when it assembles; Then: the time that in the middle of disposable diving operation, can continue to use is grown (time of water intrusion dragging motor is slower); Otherwise, then: the time that in the middle of disposable diving operation, can continue to use just very short (time of water intrusion dragging motor is very fast).
For this reason, when people used the immersible pump operation, the general duration can be not oversize, and, after the use,, let the infiltration that gets into immersible pump inside have an opportunity to be exuded to the again outside of this body just as soon as possible with its placements of leaving the water.---small-sized immersible pump do so still can, can large and medium-sized immersible pump just doing has like this had trouble.
Cause the reason of above-mentioned behaviour in service; It mainly is the problem of immersible pump design of Sealing Structure; The problem that secondly artificial assembling error is also arranged: for example; The securing member of one type on screw is not screwed, just increased the above-mentioned time that in the middle of disposable diving operation, can continue to use yet and increased some even if screwed as requested; And be difficult to accomplish:
Let this immersible pump use under water always; Be placed on for a long time under water again after shutting down; Use under water once more afterwards, be placed on for a long time under water once more, use under water once more afterwards;, up to the liquid pump that constitutes this immersible pump or dragging motor the two one of ownly cause corrupted after wearing and tearing through long-term work and shut down.---promptly let " throughout one's life " in the underwater always environment of immersible pump.
Summary of the invention
The present invention's purpose:
Be exactly for through the hermetically-sealed construction of prior art is improved, solve the problem of above-mentioned " being difficult to accomplish ", realization can let immersible pump work under water always with the environment that leaves unused in the problem of " throughout one's life ".
In order to realize the object of the invention, intend the technology below adopting:
The present invention includes: the two dragging motor that constitutes of stator by rotor and embedding winding of conventional structure form passes through the liquid pump of its rotating shaft drive, and is positioned at outermost protective coat; It is characterized in that:
Above-mentioned mover and drive the running of above-mentioned liquid pump and be positioned at the outside rotating shaft part of this liquid pump; Cingens by the metallic seal Isolated Shield with three-dimensional form; And; Be used for this rotor and this stator metallic seal Isolated Shield part between the two and should adopt slim non-magnet material to serve as, and the metallic seal Isolated Shield part that this slim non-magnet material is made is arranged on is close to the interior ring circumferential location that (tight fit) embeds the stator of winding; And the bottom that is back taper in the metallic seal Isolated Shield is provided with the motor shaft envelope;
(three-dimensional defense line that metallic molecule forms can stop gas molecule and fluid molecule therefrom to penetrate) all realized through non-removable welding procedure in all slits that described metallic seal Isolated Shield relates to itself.
---described metallic seal Isolated Shield is implemented location (detachably not hindering in realizing characteristics of the present invention here) through dismountable screw fastener and common liquid pump.
---described liquid pump is dismountable (detachably not hindering in realizing characteristics of the present invention here).
The present invention and prior art characteristics relatively:
Because the present invention has passed through on existing conventional and common liquid pump version basis; Having increased mainly is the metallic seal Isolated Shield (let the motor stator of the embedding winding that is easy to corrupted comparatively speaking be dismountable) of the solid of rotor being surrounded character; And through the air pressure in this Isolated Shield inner chamber; Let extraneous shipwreck with entering, or be merely able to trace entering (can avoid the minor amount of water of this access finally can touch rotor even let this rotor in water, rotate fully).---the viscosity of water is very big, will cause the rotating speed of rotor to reduce significantly and the final winding that damages in (burning out) embedding motor stator.---so " let extraneous shipwreck getting into, or be merely able to trace get into " lets in the underwater always environment of immersible pump the problem of " throughout one's life " create condition on hermetically-sealed construction, having solved above-mentioned " being difficult to accomplish "; If when need not to let the present invention place under water " throughout one's life " forever, at least can for: let disposable under water work of the present invention and idle cumulative time create condition far more than the level that the prior art structure can reach.
Description of drawings
Illustrated a kind of structure embodiment of the present invention that is provided with the metallic seal Isolated Shield.
1: the motor stator that embeds winding; 2: rotor; 3: motor bearings; 4: the metallic seal Isolated Shield; 5: protective coat; 6: machine shaft; 7: motor shaft seals or is provided with the position of this envelope; 8: the discharging tube interface; 9: liquid pump (for example: blade type commonly used); 10: screw; 11: the feed tube interface.
Embodiment
Key of the present invention is; Be provided with between motor stator 1 and rotor 2 that (non-magnet material has drawn from stainless steel or brass by slim (desirable 0.1 millimeter of its thickness); Or the like) the metallic seal Isolated Shield 4 processed; And other positions of metallic seal Isolated Shield 4 can adopt abundant material to produce, and can get its thickness and be several millimeters magnitude, and the slit that constitutes between metallic seal Isolated Shield 4 different parts must adopt welding procedure to realize; And should forbid to occur the phenomenon of rosin joint or dry joint, the final molding of this Isolated Shield 4 can adopt the way of implementing the last assembly of integral solder after local the installation again to realize.---purpose is: let metallic seal Isolated Shield 4 after the assembly form an airproof metallic cavity of monolithic devices except its underpart motor shaft envelope 7 (can adopt conventional shaft seal structure---can't stop the infiltration of hydrone); This metallic cavity, i.e. metallic seal Isolated Shield 4 can prevent air molecule therefrom to penetrate.
Yet whole metallic seal Isolated Shield 4 (containing the dragging motor structure) is the upper position that is positioned at liquid pump 9 through several screws 10 removably.Obviously; The structure of the common and conventional liquid pump 9 that the present invention adopts is to allow it demountable, and this is because its demountable structure; When its underwater operation; Even leak everywhere or water inlet, also be can not influence its operate as normal, the work as long as the rotor 2 of formation liquid pump 9 dragging motors does not soak.
Since the present invention when working (motor intensifications) interior air themperature of these Isolated Shield 4 cavitys when not working be different, according to the principle of expanding with heat and contract with cold:
When motor quits work; Be that metallic seal Isolated Shield 4 cavity temperatures are when relatively low; The water of extraneous minute quantity can seal 7 from motor shaft, and (can adopt common waterproof axle envelope---have at its two end under the situation of pressure reduction to be difficult to infiltration comparatively speaking) infiltrates; Also can improve simultaneously air in this chamber to the jacking dynamics of above-mentioned infiltration, make the jacking dynamics of this water percolating capacity and this air reach balance.---infiltration is deposited on the lower position of back taper in these Isolated Shield 4 chambeies.
When machine operation, i.e. when metallic seal Isolated Shield 4 cavity temperatures were higher relatively, air will increase for infiltering the outside jacking dynamics of water of coming in this chamber, forces above-mentioned infiltration to withdraw from this Isolated Shield 4 by former road.
In addition, if the present invention is arranged under water always, then the underwater environment variation of temperature in summer and winter also can influence the average normal ponding quantity of Isolated Shield 4 inner chamber bottoms.
Obviously, key of the present invention is: must let 4 last moulding of metallic seal Isolated Shield and the piece position that does not allow to exist rosin joint or dry joint through welding.---let metallic seal Isolated Shield 4 become the air storage entities of " hermetically sealed " type, reach the degree that air molecule or hydrone definitely can't therefrom be penetrated.
If; The fastening enforcement that certain position of metallic seal Isolated Shield 4 is the encapsulant that adopts one type on dismountable nonmetal rubber through screw 10 seals; So; The air on these Isolated Shield 4 cavity tops still can penetrate away from above-mentioned flexible non-metallic encapsulant, just its transmission rate may be slowly (it is not all right that bicycle and air tube a period of time do not inflate---itself can't stop penetrating of gas molecule).
If; Certain position of metallic seal Isolated Shield 4 is to adopt dismountable two very smooth metal flats to seal through fastening enforcement of screw; So; Air in these Isolated Shield 4 cavitys still can be from (all there be roughness in smooth again any plane---its smooth slit of pressing can't stop penetrating of gas molecule) of passing between above-mentioned two very smooth metal flats, just its transmission rate may be slowly some.
More than two instances proved that fully prior art immersible pump why exists the problem that " being difficult to accomplish " described in " background technology " for a long time under water can not " throughout one's life ".---this be because: can't resist the cause that gas molecule or fluid molecule penetrate at dismountable hermetically-sealed construction that its key position adopts from its sealing defence line in the prior art.
What as everyone knows, the dragging motor of immersible pump was abstained from most is exactly to let rotor 2 touch water and rotary work in water.Because the viscosity of water is very big, the output of the rotating speed of limit rotor 2 and moment to a great extent.---the rotating speed of rotor 2 slows down to increase considerably and embeds the electric current that passes through in stator 1 winding, burns out or damage the winding that embeds in the motor stator 1 at last, causes the motor corrupted.
Let as far as possible thin among the present invention and non-magnetic metallic seal Isolated Shield 4 is implemented tight fit with the inner periphery of motor stator 1; Exist under the situation in gap between rotor 2 and this Isolated Shield 4 and let, the effect through rotating magnetic field lets rotor 2 rotary work in air all the time.---because extraneous desire gets into the jacking that the inner water of the present invention receives the air in " hermetically sealed " type metallic seal Isolated Shield 4 inner chambers among the present invention; Under any circumstance; Have no chance to get in a large number in the middle of these Isolated Shield 4 inner chambers and let rotor 2 touch water; And allow the infiltration that is deposited on these Isolated Shield 4 intracavity bottoms of minute quantity, be entail dangers to rotor 2 normal rotary works not.
And independent motor stator 1 prevents that the structure of soaking from accomplishing easily, belongs to the prior art scope, and for example, the simplest way is: the stator 1 that will embed winding soaks to dry afterwards in insulating varnish again just can have been realized.Obviously, this motor stator 1 that has embedded winding belongs to dismountable character in structure of the present invention, and by contrast, the winding coil in the motor stator 1 is easy to damage in structure of the present invention most.
In general, motor is a very ripe product, as long as guarantee rotor 2 rotary work in air all the time wherein, so, motor just is not easy to damage very much.Therefore, the rotor among the present invention 2 is arranged in the metallic seal Isolated Shield 4 has also just worried after operation over a long time, taking place easily from the problem of damage.---the general durable apparatus that drags by motor; For example: washing machine, refrigerator and the sky device that withers; Or the like, the disposable adapted life-span of its motor is mostly more than 10 years, and the disposable adapted life-span of the motor of world's best brand of product adapted is mostly more than 15 years or 20 years.
Claims (3)
1. the hermetically-sealed construction of an immersible pump comprises: the liquid pump (9) that drives through its rotating shaft (6) by the dragging motor of rotor (2) and the two formation of stator (1) that embeds winding of conventional structure form, and be positioned at outermost protective coat (5);
It is characterized in that:
Above-mentioned rotor (2) and drive above-mentioned liquid pump (9) running and be positioned at the outside rotating shaft (6) of this liquid pump (9)
Part; Cingens by metallic seal Isolated Shield (4) with three-dimensional form; And; Be used for that this rotor (2) and this stator (1) the metallic seal Isolated Shield (4) between the two is local to adopt slim non-magnet material to serve as, and metallic seal Isolated Shield (4) part that this slim non-magnet material is made is arranged on the interior ring circumferential location of being close to the stator (1) that embeds winding; And the bottom that is back taper in metallic seal Isolated Shield (4) is provided with motor shaft envelope (7);
All realize through non-removable welding procedure in all slits that described metallic seal Isolated Shield (4) relates to itself.
2. the hermetically-sealed construction of an immersible pump according to claim 1 is characterized in that: described metallic seal Isolated Shield (4) is implemented the location through dismountable screw (10) securing member and liquid pump (9).
3. the hermetically-sealed construction of an immersible pump according to claim 1, it is characterized in that: described liquid pump (9) is dismountable.
?
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100675499A CN102195387B (en) | 2011-03-21 | 2011-03-21 | Sealing structure of submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100675499A CN102195387B (en) | 2011-03-21 | 2011-03-21 | Sealing structure of submersible pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102195387A CN102195387A (en) | 2011-09-21 |
| CN102195387B true CN102195387B (en) | 2012-10-31 |
Family
ID=44602950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100675499A Expired - Fee Related CN102195387B (en) | 2011-03-21 | 2011-03-21 | Sealing structure of submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102195387B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935621A (en) * | 2013-01-17 | 2014-07-23 | 青岛天力建筑加固工程有限公司 | Waterproof sealing box |
| CN106286320A (en) * | 2016-08-09 | 2017-01-04 | 梁嘉麟 | Utilize submersible pump structure and the using method thereof of air jacking principle waterproof sealing |
| CN106230165A (en) * | 2016-08-09 | 2016-12-14 | 梁嘉麟 | That utilize air jacking waterproof sealing structure and that motor stator is detachable immersible pump |
| CN106438392A (en) * | 2016-10-19 | 2017-02-22 | 中国计量大学 | Pump structure capable of enabling liquid molecules in pump not to be leaked during operation through air jacking sealing and including immersion pump and application method of pump structure |
| CN108155746A (en) * | 2016-12-06 | 2018-06-12 | 梁嘉麟 | Using fluid jacking waterproof sealing and it is capable of the dragging motor of the underwater utensil adapted of the non-maintaining simple type of deep diving |
| CN113746248A (en) * | 2016-12-06 | 2021-12-03 | 中国计量大学 | Submersible dragging motor capable of realizing infinite deep diving and extremely long-term diving |
| CN108155750A (en) * | 2016-12-06 | 2018-06-12 | 中国计量大学 | Using fluid jacking waterproof sealing and it is capable of the dragging motor of the underwater utensil adapted of the non-maintaining ideal type of deep diving |
| CN108155748A (en) * | 2016-12-06 | 2018-06-12 | 梁嘉麟 | Using fluid waterproof sealing and can the non-maintaining underwater dragging motor of deep diving be used to drive the structure type of underwater conveyer belt |
| CN108155747A (en) * | 2016-12-06 | 2018-06-12 | 梁嘉麟 | Can deep diving it is non-maintaining and allow fluid jacking come waterproof sealing underwater utensil adapted dragging motor and its application method |
| CN108155749A (en) * | 2016-12-06 | 2018-06-12 | 中国计量大学 | Using fluid jacking come waterproof sealing and be capable of the underwater dragging motor of the non-maintaining submarine engineering of deep diving or utensil adapted |
| CN108317090A (en) * | 2016-12-22 | 2018-07-24 | 李峰 | A kind of immersible pump suitable for decompression method exploitation combustible ice |
| CN109802511A (en) * | 2017-11-16 | 2019-05-24 | 中国计量大学 | The dragging motor and its application method of adapted underwater engine instrument |
| CN113410972B (en) * | 2021-05-27 | 2022-05-24 | 中国科学院高能物理研究所 | Magnetic field isolation device for linear motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2225105Y (en) * | 1995-02-20 | 1996-04-17 | 杭州水泵总厂 | Single phase electric motor for water pump |
| CN2301006Y (en) * | 1997-06-13 | 1998-12-16 | 郑锡和 | Submerged electric motor |
| CN1139729C (en) * | 2000-05-12 | 2004-02-25 | 清华大学 | Shielded pipeline pump |
| CN101315080B (en) * | 2008-05-13 | 2011-09-07 | 深圳市雅尔典科技有限公司 | Full sealing type refrigerant fluid pump and its application in high-rise storied house refrigerating system |
| CN201699506U (en) * | 2010-06-12 | 2011-01-05 | 中国科学院沈阳科学仪器研制中心有限公司 | Canned motor for vacuum pump |
-
2011
- 2011-03-21 CN CN2011100675499A patent/CN102195387B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102195387A (en) | 2011-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102195387B (en) | Sealing structure of submersible pump | |
| CN102691665A (en) | A structure waterproof sealing method for a submersible pump | |
| CN102192160A (en) | Omni-sealed waterproof sealing structure of submersible pump | |
| CN102788024B (en) | Sealing structure form of full-sealing A type liquid pump | |
| CN102691664A (en) | Fully-sealed waterproof and sealing method for submersible pump structure | |
| CN102788025B (en) | Anti-leaking sealing method for full-sealing B type liquid pump | |
| CN109989937B (en) | Shaft end sealing device of submersible pump shaft | |
| CN102788026B (en) | Anti-leaking sealing method of full-sealing liquid pump of with detachable motor stator during operation | |
| CN208142977U (en) | A kind of sealing structure of shaft end of dry-type submersible motor | |
| CN201496283U (en) | Immersible pump with spiral labyrinth sealing device | |
| CN205533276U (en) | There is not sealed pipeline pump | |
| CN206972602U (en) | A kind of high-temperature water mechanical sealing device used for pump | |
| CN201610859U (en) | Sealing device for oil-immersed diving pump shaft | |
| CN206129685U (en) | Oiling formula fan shaft seal device | |
| CN206023432U (en) | A kind of deep-sea oil charging motor of automatic water-removing | |
| CN204186603U (en) | A kind of small volume electric pump | |
| CN204186604U (en) | A kind of corrosion-resistant magnetic drive pump | |
| CN207835248U (en) | Submersible axial flow pump | |
| CN202273898U (en) | Pump cover for chemical flow magnetic drive pump | |
| CN201813244U (en) | Packingless pump and special motor thereof | |
| CN204200604U (en) | A kind of oil immersion type electric underwater pump | |
| CN101929469A (en) | Submerged pump with spiral labyrinth seal device | |
| CN204041550U (en) | A kind of Novel water pump for automobile | |
| CN203352349U (en) | Novel sealed submersible motor | |
| CN220775522U (en) | Motor for electric hydraulic excavator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20140321 |