CN208634052U - Liquid supply system and shielding electric pump thereof - Google Patents
Liquid supply system and shielding electric pump thereof Download PDFInfo
- Publication number
- CN208634052U CN208634052U CN201821244313.1U CN201821244313U CN208634052U CN 208634052 U CN208634052 U CN 208634052U CN 201821244313 U CN201821244313 U CN 201821244313U CN 208634052 U CN208634052 U CN 208634052U
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- CN
- China
- Prior art keywords
- pump
- pump shaft
- shielded electric
- helicla flute
- inner casing
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- 239000007788 liquid Substances 0.000 title claims abstract description 53
- 238000007789 sealing Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- 230000035772 mutation Effects 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a canned motor pump, include: a housing assembly; a support assembly disposed in the housing assembly, including two slide bearings; and the rotor assembly comprises a rotor and pump shafts protruding from two ends of the rotor, the sliding bearings are respectively arranged on the pump shafts on two sides of the rotor, and at least one spiral groove is formed in each pump shaft and corresponds to the sliding bearings. When the operation, the rotor drives the pump shaft and rotates for slide bearing, when the incrustation scale was filled between pump shaft and slide bearing and the pump shaft rotated, the edge of helicla flute can with slide bearing's inner wall butt, can cut down the incrustation scale that is attached to between pump shaft and the slide bearing to discharge along the helicla flute, but make pump shaft and slide bearing relative motion, mutually noninterfere avoids the canned motor pump to become invalid, guarantees canned motor pump reliable operation. The utility model also provides a liquid supply system.
Description
Technical field
The utility model relates to supply equipment technical fields, more particularly to a kind of liquid-supplying system and its shielded electric pump.
Background technique
For current shielded electric pump, shielded electric pump usually using sliding bearing collocation hollow shaft structure.In water
Under the action of drift angle, medium returns to hollow shaft and forms internal circulation by pump shaft and bearing clearance, rotor and housing gap.
Heat when motor work is walked by this tape loop.This pump configuration can achieve the effect that zero leakage, while also possess volume
The advantages of small, low noise.It is widely used in the home scenarios such as private residence pressurized water supply, solar energy, wall-hung boiler, floor heating in recent years.
But when shielded electric pump quality of water is harder, the calcium ions and magnesium ions in water system enter the inside circulation of electric pump
Form scale at high operating temperatures afterwards, as water flow is attached to each corner inside electric pump, the especially pump shaft of narrow space
With sliding bearing gap.After scale is full of the gap between pump shaft and sliding bearing, it will increase the friction of the two, blocked pump
Relative motion between axis and sliding bearing, final sliding bearing locking pump shaft, causes electric pump to fail, influence electric pump operation can
By property.
Utility model content
Based on this, it is necessary to lead to sliding bearing locking full of the gap between pump shaft and sliding bearing for current scale
The problem of pump shaft, provide it is a kind of avoid the shielded electric pump stuck by scale, while also providing a kind of using above-mentioned shielded electric pump
Liquid-supplying system.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of shielded electric pump, comprising:
Housing unit；
The support component being set in the housing unit, including two sliding bearings；And
The rotor assembly being set in the housing unit, the pump shaft including rotor and the protrusion two ends of rotor, institute
The pump shaft that two sliding bearings are respectively arranged at the rotor two sides is stated, there is helicla flute at least one on the pump shaft,
And the corresponding sliding bearing setting.
The helicla flute is located at the side of the rotor in one of the embodiments,.
The shielded electric pump further includes impeller in one of the embodiments, and the impeller is installed on the one of the pump shaft
End, the helicla flute are located at side of the pump shaft far from the impeller.
The helicla flute is located at the two sides of the rotor in one of the embodiments,.
The rotation direction of the helicla flute is consistent with the steering of the pump shaft in one of the embodiments,.
The quantity of the helicla flute is one in one of the embodiments,；
Alternatively, the helicla flute is unidirectional multi-head spiral groove.
The cross sectional shape of the helicla flute is arc, rectangle, V-arrangement, shaped form or polygon in one of the embodiments,
Shape.
The length of the helicla flute in axial direction is more than or equal to the sliding bearing along axis in one of the embodiments,
To the length in direction.
In one of the embodiments, the width of the helicla flute in axial direction be the pump shaft diameter 0.05~
0.5；
And/or the screw pitch of the helicla flute is the 0.1~0.5 of the pump shaft diameter.
The rotor is structure as a whole with the pump shaft in one of the embodiments,；
Alternatively, the rotor and the pump shaft are interference fit.
In one of the embodiments, the housing unit include inner casing, the shell for being sheathed on the inner casing and be located at institute
The pump case of inner casing side is stated, the inner casing is connect with the shell and the pump case respectively, and the pump shaft is located in the inner casing,
And one end of the pump shaft wears the inner casing and protrudes between the inner casing and the pump case, the sliding bearing is by the pump
Axis is supported on the inner casing；The cavity between cavity and the inner casing and the shell between the inner casing and the pump case
Independently of each other.
The shielded electric pump further includes closeouts in one of the embodiments, has air vent on the inner casing, described
Air vent corresponds to the helicla flute setting, and the air vent is connected to the helicla flute and external environment, the closeouts are installed on
In the air vent, for sealing the inner casing.
The pump shaft has runner in axial direction in one of the embodiments, and the runner and the inner casing connect
It is logical, for being flowed through for the liquid medium in the inner casing.
The stepped setting of the runner in one of the embodiments, and the sectional dimension of the runner is along flowing side
To gradually increasing.
The rotor assembly further includes non return part in one of the embodiments, is set at the ladder of the runner, is used
In the limitation medium back flow.
A kind of liquid-supplying system, including the shielded electric pump as described in any of the above-described technical characteristic.
After adopting the above technical scheme, the utility model at least has the following technical effect that
The liquid-supplying system and its shielded electric pump of the utility model, when operation, rotor drives pump shaft to forward relative to sliding axle
Dynamic, when scale is filled between pump shaft and sliding bearing and pump shaft rotates, the seamed edge of helicla flute can be with the inner wall of sliding bearing
It abuts, the scale being attached between pump shaft and sliding bearing can be cut down, and be discharged along helicla flute.The current water of effective solution
It is the problem of dirt leads to sliding bearing locking pump shaft full of the gap between pump shaft and sliding bearing, reliable to exclude pump shaft and sliding
Scale between bearing, so that pump shaft can be movable relatively with sliding bearing, it is non-interference, it avoids shielded electric pump from failing, guarantees screen
Cover electric pump reliability service.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the shielded electric pump of an embodiment of the present invention；
Fig. 2 is the main view of rotor assembly in shielded electric pump shown in FIG. 1.
Wherein:
100- shielded electric pump；
110- housing unit；
111- inner casing；1111- bay cover；1112- housing；
112- shell；
113- pump case；
120- support component；
121- sliding bearing；
130- rotor assembly；
131- rotor；
132- pump shaft；1321- helicla flute；1322- runner；
133- non return part；
140- impeller；
150- stator；
160- closeouts.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, by the following examples, it and ties
Attached drawing is closed, the liquid-supplying system and its shielded electric pump of the utility model are further elaborated.It should be appreciated that this place is retouched
The specific embodiment stated only to explain the utility model, is not used to limit the utility model.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear",
The orientation or position of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise "
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It should not be understood as limiting the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Referring to Fig. 1 and Fig. 2, the utility model provides a kind of shielded electric pump 100.The shielded electric pump 100 can reach zero and let out
The effect of leakage, while also having many advantages, such as small in size, low noise.The shielded electric pump 100 of the utility model is for conveying liquid Jie
Matter, in the present embodiment, shielded electric pump 100 is mainly used in liquid-supplying system, as private residence pressurized water supply, solar energy, wall-hung boiler,
It is warm to wait home scenarios, for realizing the circulation conveying of water flow.In the other embodiments of the utility model, shielded electric pump 100
It can also be used in the circulation conveying of other liquid mediums such as oil etc..The shielded electric pump 100 of the utility model can even running, avoid
It is stuck after the impurity such as scale, improve the reliability of shielded electric pump 100.
In one embodiment, shielded electric pump 100 includes housing unit 110, support component 120 and rotor assembly 130.Rotor
Component 130 and support component 120 are all set in housing unit 110.Housing unit 110 plays protective action, interior carrying shielding
Most of components of electric pump 100 avoid extraneous structure and the components of shielded electric pump 100 from interfering.Moreover, shielded electric pump
100 for conveying liquid medium, and housing unit 110 has preferable leakproofness, guarantees that it conveys the reliability of liquid medium, keeps away
Exempt to reveal.Support component 120 plays a supportive role, and for rotor assembly 130 to be supported in housing unit 110, avoids rotor set
It is interfered between the rotation and housing unit 110 of part 130, guarantees 130 stability of rotation of rotor assembly.
Support component 120 includes two sliding bearings 121, and rotor assembly 130 includes rotor 131 and protrusion rotor 131
The pump shaft 132 at both ends, two sliding bearings 121 are respectively arranged at the pump shaft 132 of 131 two sides of rotor.Sliding bearing 121 is installed on
Housing unit 110, and be also installed on the pump shaft 132 of 131 two sides of rotor.Exemplary, the outer ring of sliding bearing 121 is installed on shell
Body component 110, the inner ring of sliding bearing 121 are installed on pump shaft 132.Rotor 131 can drive pump shaft 132 with respect to sliding bearing 121
Rotation, moreover, sliding bearing 121 can be slided with respect to pump shaft 132 and be done when the starting of shielded electric pump 100, stopping or changing operating condition
Linear reciprocating motion.There are gap between sliding bearing 121 and pump shaft 132, liquid medium can be flowed by the gap.This sample liquid
The heat that body medium can take away when rotor 131 is run is achieved the purpose that cooling with reducing the temperature of rotor assembly 130.
When shielded electric pump 100 conveys water, the calcium ions and magnesium ions in water will form water under the high temperature action of rotor assembly 130
Dirt, and be attached between sliding bearing 121 and pump shaft 132.In order to avoid the stuck sliding bearing 121 of scale and pump shaft 132, this reality
With having helicla flute 1321 at least one on the pump shaft 132 of a novel embodiment, corresponding sliding bearing 121 is arranged.131 band of rotor
When dynamic pump shaft 132 rotates, due to the presence in gap between pump shaft 132 and sliding bearing 121, pump shaft 132 can generate centrifugal movement.
The inner ring that i.e. pump shaft 132 moves Shi Huiyu sliding bearing 121 abuts, the seamed edge meeting of helicla flute 1321 and sliding axle on pump shaft 132
Hold the scale contact adhered on 121 inner walls.When pump shaft 132 rotates, helicla flute 1321 can spin movement, at this point, helicla flute
1321 seamed edge is contacted with inner wall to chip away the scale on 121 inner ring of sliding bearing.Also, the scale cut can fall
Into in helicla flute 1321, helicla flute 1321 generates when rotating with pump shaft 132 lift discharge sliding bearing 121 and pump shaft 132
Between.
It should be understood that rotor 131 drives pump shaft 132 to rotate with fixed rotating speed in 100 operational process of shielded electric pump.This
When, the seamed edge of helicla flute 1321 can form sharp sword on the surface of pump shaft 132 on pump shaft 132.Just as drill bit can cut material
Equally, the inner wall of 121 inner ring of sliding bearing is equivalent to the hole wall in drilling technique, and the pump shaft 132 with helicla flute 1321 is with regard to phase
When scraping away the scale being attached on pump shaft 132 and sliding bearing 121 in drill bit.It is attached to sliding bearing 121 and pump shaft 132
Between scale transported between pump shaft 132 and sliding bearing 121 just as the iron filings in drilling technique along helicla flute 1321.
Moreover, the inner ring of sliding bearing 121 can do sliding fortune with respect to outer ring when the starting of shielded electric pump 100, stopping or changing operating condition
It is dynamic.At this point, the seamed edge of helicla flute 1321 can also chip away the scale on sliding bearing 121.
The shielded electric pump 100 of the utility model is by being arranged helicla flute with the junction of sliding bearing 121 on pump shaft 132
1321, to cut the scale between properties of journal bearing lubricated 121 and pump shaft 132, the current scale of effective solution is full of pump shaft 132 and sliding
Gap between bearing 121 leads to the problem of 121 locking pump shaft 132 of sliding bearing, reliable to exclude pump shaft 132 and sliding bearing
Scale between 121, so that pump shaft 132 can be movable relatively with sliding bearing 121, it is non-interference, avoid shielded electric pump 100 from losing
Effect guarantees 100 reliability service of shielded electric pump.
In one embodiment, helicla flute 1321 is located at the side of rotor 131.That is, helicla flute 1321 can only be set
On the pump shaft 132 for setting 131 side of rotor.There are two pump shaft 132 and 121 junctions of sliding bearing for the tool of shielded electric pump 100, wherein one
The scale attachment of a pump shaft 132 and 121 junction of sliding bearing can block the phase of pump shaft 132 with sliding bearing 121 than more serious
To movement.Therefore, helicla flute 1321 only can be set on the pump shaft 132 that scale attachment is seriously located, can avoiding sliding in this way
While 121 stuck pump shaft 132 of dynamic bearing, processing technology is reduced, improves processing efficiency.
As depicted in figs. 1 and 2, in the present embodiment, helicla flute 1321 is located at the rear end of pump shaft 132.This is because shielding electricity
When 100 operation of pump, 121 temperature of sliding bearing of rear side is relatively high, easily fouling, and the sliding bearing 121 of rear side is stuck
The probability of pump shaft 132 is greater than the probability of the stuck pump shaft 132 of front side sliding bearing 121.The helicla flute 1321 of rear side can be effective
The scale adhered on 121 inner wall of properties of journal bearing lubricated is cut, guarantees that pump shaft 132 can be moved with respect to sliding bearing 121, and then guarantee shielding
100 reliability service of electric pump.
In one embodiment, shielded electric pump 100 further includes impeller 140, and impeller 140 is installed on one end of pump shaft 132.Impeller
140 play pressurization, for being pressurized to liquid medium such as water etc., realize the conveying of liquid medium.Housing unit 110 has
There are liquid-inlet and liquid outlet, liquid-inlet impeller 140 corresponding with liquid outlet is arranged.Impeller 140 can will be at liquid-inlet
Liquid medium be transported to liquid outlet.Exemplary, helicla flute 1321 is located at side of the pump shaft 132 far from impeller 140.Also
It is to say, one end where impeller 140 is the front end of shielded electric pump 100, and helicla flute 1321 is located remotely from the side of impeller 140, i.e.,
Positioned at the rear side of shielded electric pump 100.
Certainly, in the other embodiments of the utility model, helicla flute 1321 is located at the two sides of rotor 131.Namely
It says, all has helicla flute 1321 on the pump shaft 132 of 131 two sides of rotor, i.e., each corresponding helicla flute of sliding bearing 121
1321.In this way can to avoid any pump shaft 132 and stuck problem caused by the attachment scale of 121 junction of sliding bearing so that
Relative motion can occur between pump shaft 132 and sliding bearing 121, guarantee the reliability service of shielded electric pump 100.
In one embodiment, rotor 131 is structure as a whole with pump shaft 132.It can simplify manufacturing procedure in this way, guarantee rotor
131 rotate synchronously with pump shaft 132, to guarantee 140 normal rotation of impeller, realize the conveying of liquid medium.Certainly, practical new at this
In the other embodiments of type, rotor 131 and pump shaft 132 are interference fit.In this way it is also ensured that rotor 131 and pump shaft 132
It rotates synchronously.
In one embodiment, housing unit 110 include inner casing 111, be sheathed on inner casing 111 shell 112 and be located at inner casing
The pump case 113 of 111 sides, inner casing 111 are connect with shell 112 and pump case 113 respectively, and pump shaft 132 is located in inner casing 111, and are pumped
One end of axis 132 wears inner casing 111 and protrudes between inner casing 111 and pump case 113, and pump shaft 132 is supported in interior by sliding bearing 121
On shell 111.Shell 112 and pump case 113, which enclose, is set as installation cavity, and inner casing 111 is located in installation cavity.Also, shell 112 and pump
Body is connected with inner casing 111 respectively.Exemplary, shell 112 connect inner casing 111 with the junction of the pump housing.Pump case 113 and inner casing 111
Between enclose and be set as the first cavity, enclosed between inner casing 111 and shell 112 and be set as the second cavity.Pump shaft 132 is located in inner casing 111, and
One end that pump shaft 132 installs impeller 140 wears inner casing 111 and extend into the first cavity of inner casing 111 and pump case 113, impeller 140
In the first cavity.
Cavity between cavity between inner casing 111 and pump case 113 and inner casing 111 and shell 112 is mutually indepedent.Namely
It says, the first cavity is not connected to independently of each other with the second cavity.The liquid medium that impeller 140 conveys in this way will not enter the second chamber
In body, the components that cannot be contacted with liquid medium in the second cavity is avoided to be impregnated by liquid medium, guarantees that shielded electric pump 100 can
By operation.Exemplary, shielded electric pump 100 further includes stator 150, and stator 150 is arranged between shell 112 and inner casing 111, ascends the throne
In the second cavity.It can be contacted in this way to avoid liquid medium with stator 150.
The cavity of cavity and inner casing 111 between inner casing 111 and the pump housing is interconnected.That is, the first cavity with it is interior
Shell 111 is connected.Liquid in such first cavity can enter in inner casing 111 with rotor 131, pump shaft 132 and sliding bearing
121 contacts reduce heat when rotor assembly 130 works, and realization cools, and guarantee 100 reliability service of shielded electric pump.One
In embodiment, inner casing 111 includes bay cover 1111 and housing 1112, housing 1112 be located at rotor 131 and stator 150 it
Between, the two sides of 1111 connection shielding sleeve 1112 of bay cover, and sliding bearing 121 is installed on bay cover 1111.
In one embodiment, the rotation direction of helicla flute 1321 is consistent with the steering of pump shaft 132.When pump shaft 132 rotates, spiral
Slot 1321 can be to wherein liquid medium with top lift, so that liquid medium edge can be directed away from the direction of impeller 140 i.e. backward
Flowing.After scale falls into helicla flute 1321, helicla flute 1321 can convenient for scale discharge sliding bearing 121 and pump shaft 132 it
Between.If the steering of the rotation direction of helicla flute 1321 and pump shaft 132 is on the contrary, helicla flute 1321 can forward scale, due to liquid
Under the fluid force effect of medium, scale can be impacted with liquid medium, cause build-up of limescale in sliding bearing 121 and pump shaft
Between 132, lead to the stuck pump shaft 132 of sliding bearing 121.Therefore, the shielded electric pump 100 of an embodiment of the present invention requires spiral shell
The rotation direction of spin slot 1321 is consistent with the steering of pump shaft 132.
In one embodiment, shielded electric pump 100 further includes closeouts 160, has air vent, air vent pair on inner casing 111
Helicla flute 1321 is answered to be arranged, air vent connection helicla flute 1321 and external environment, closeouts 160 are installed in air vent, are used for
Seal inner casing 111.If scale always with liquid medium flow may can also other stuck components, or cause in inner casing 111
Build-up of limescale excessively influences the operation of rotor 131.Therefore, an embodiment of the present invention opens up air vent on inner casing 111, and
It is rear side that air vent, which is located at the one end of inner casing 111 far from impeller 140, and is blocked by closeouts 160 to air vent.It blocks
Part 160 is detachably arranged in air vent.
When scale is transported to rear side by helicla flute 1321, the closeouts 160 on inner casing 111 are removed, inner casing can be removed
Scale in 111.After the completion of removing, closeouts 160 are installed in air vent, at this point, the liquid medium in inner casing 111 can be with
Continue to flow.Exemplary, closeouts 160 are the bleeder screw that tool can be used to unscrew.After bleeder screw is unscrewed, it can remove
It is transported to the scale of rear side, guarantees the reliability service of shielded electric pump 100.
In one embodiment, pump shaft 132 has runner 1322 in axial direction, and runner 1322 is connected to inner casing 111, uses
It is flowed through in for the medium in inner casing 111.The rear side of 1322 pump shaft 132 of liquid medium runner in inner casing 111 flows into pump shaft 132
Runner 1322, and enter impeller 140 in.In this way, heat band when liquid medium can work rotor 131 and pump shaft 132
It walks, guarantees 100 reliability service of shielded electric pump.
Further, the stepped setting of runner 1322, and the sectional dimension streamwise of runner 1322 gradually increases.
It can be flowed at impeller 140 convenient for liquid medium by the runner 1322 of pump shaft 132 in this way.Optionally, rotor assembly 130 is gone back
It including non return part 133, is set at the ladder of runner 1322, for limiting liquid medium reflux.That is, non return part 133
It is arranged at 1322 diameter mutation of runner.When liquid medium flows from back to front in runner 1322, liquid medium be will push
Non return part 133 so that non return part 133 far from 1322 diameter mutation of runner at, at this point, liquid medium may pass through non return part 133 stream
To at impeller 140.When liquid medium flows from front to back in runner 1322, liquid medium will push 133 direction of non return part
It is moved at 1322 diameter mutation of runner, also, non return part 133 can block the lesser runner 1322 of sectional dimension, such liquid is situated between
Matter can not flow backward, and then liquid medium is avoided to flow back.
In one embodiment, liquid-inlet and liquid outlet are located on pump case 113.Exemplary, liquid-inlet is located at pump case
113 axial direction, and corresponding impeller 140 is arranged, liquid outlet is located at the side of pump case 113.It also, is low pressure at liquid-inlet
Area, liquid outlet are higher-pressure region.After liquid medium at liquid-inlet is pressurized by impeller 140, sent out from liquid outlet.And
And under pressure, liquid medium can also the gap of sliding bearing 121 from impeller 140 through front side and pump shaft 132 enter
Into inner casing 111, also, liquid medium additionally flows through gap and rear side sliding bearing 121 between rotor 131 and inner casing 111
With the gap of pump shaft 132, and the rear side of pump shaft 132 is flowed to.Meanwhile helicla flute 1321 can also cut properties of journal bearing lubricated 121 and pump shaft
Scale at 132 after scale falls into helicla flute 1321, can be acted in the top lift of helicla flute 1321 and the fluid force of liquid medium
Under be transported to the rear side of pump shaft 132.And the liquid medium in inner casing 111 can enter runner 1322 from 113 rear end of pump case, and flow
To impeller 140, circulating for liquid medium is realized.
When scale is more, closeouts 160 are removed, scale is discharged.After scale discharge, closeouts 160 are installed on and are put
In stomata.It should be understood that the shielded electric pump 100 of an embodiment of the present invention is used for closed circulation system, the calcium in system
Magnesium ion only can be fewer and fewer, will not increase without foundation, so by removing closeouts 160, it, will after scale is transported to the external world
Scale in reduction system, to guarantee the reliability service of electric pump.
In one embodiment, the quantity of helicla flute 1321 is one.The removal of scale is ensured that in this way, while can also
Reduce manufacturing procedure.Certainly, in the other embodiments of the utility model, helicla flute 1321 is also unidirectional multi-head spiral groove
1321.That is, the quantity of helicla flute 1321 be it is a plurality of, the rotation direction of a plurality of helicla flute 1321 is identical, and a plurality of helicla flute
1321 starting point on the same circumference, between there are spacing.The removal of scale also may be implemented in this way.
In one embodiment, the cross sectional shape of helicla flute 1321 is arc, rectangle, V-arrangement, the splicing of multistage straightway, multistage
Arc segment splicing.It should be understood that the cross sectional shape of helicla flute 1321 is unrestricted in principle, as long as the seamed edge of helicla flute 1321
It can be contacted with the inner wall of sliding bearing 121, to cut lower scale.In the present embodiment, the cross sectional shape of helicla flute 1321 is
Arc, and be semi arch.
In one embodiment, the width of helicla flute 1321 in axial direction is the 0.05~0.5 of 132 diameter of pump shaft.Spiral
The screw pitch of slot 1321 is the 0.1~0.5 of 132 diameter of pump shaft.Further, the length of helicla flute 1321 in axial direction be greater than etc.
In the length of sliding bearing 121 in axial direction.It can guarantee that helicla flute 1321 can be cut on 121 inner wall of properties of journal bearing lubricated in this way
Scale, avoid certain scale residual lead to stuck pump shaft 132.
An embodiment of the present invention also provides a kind of liquid-supplying system, including the shielded electric pump 100 in above-described embodiment.It is logical
Cross the conveying that shielded electric pump 100 realizes liquid medium such as water etc..Liquid-supplying system conveys liquid using above-mentioned shielded electric pump 100 and is situated between
After matter, it can be avoided because the failure of shielded electric pump 100 causes liquid medium that can not convey, liquid medium is continuously conveyed in realization.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the record scope of this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (16)
1. a kind of shielded electric pump characterized by comprising
Housing unit (110)；
The support component (120) being set in the housing unit (110), including two sliding bearings (121)；And
The rotor assembly (130) being set in the housing unit (110), including rotor (131) and the protrusion rotor
(131) pump shaft (132) at both ends, described two sliding bearings (121) are respectively arranged at the pump of the rotor (131) two sides
Axis (132) has helicla flute (1321) at least one, and corresponding sliding bearing (121) setting on the pump shaft (132).
2. shielded electric pump according to claim 1, which is characterized in that the helicla flute (1321) is located at the rotor
(131) side.
3. shielded electric pump according to claim 1, which is characterized in that the shielded electric pump further includes impeller (140), described
Impeller (140) is installed on one end of the pump shaft (132), and the helicla flute (1321) is located at the pump shaft (132) far from described
The side of impeller (140).
4. shielded electric pump according to claim 1, which is characterized in that the helicla flute (1321) is located at the rotor
(131) two sides.
5. shielded electric pump according to any one of claims 1 to 4, which is characterized in that the rotation direction of the helicla flute (1321)
It is consistent with the steering of the pump shaft (132).
6. shielded electric pump according to claim 5, which is characterized in that the quantity of the helicla flute (1321) is one；
Alternatively, the helicla flute (1321) is unidirectional multi-head spiral groove (1321).
7. shielded electric pump according to any one of claims 1 to 4, which is characterized in that the section of the helicla flute (1321)
Shape is arc, rectangle, V-arrangement, shaped form or polygon.
8. shielded electric pump according to any one of claims 1 to 4, which is characterized in that the helicla flute (1321) is along axial direction
The length in direction is more than or equal to the length of the sliding bearing (121) in axial direction.
9. shielded electric pump according to any one of claims 1 to 4, which is characterized in that the helicla flute (1321) is along axial direction
The width in direction is the 0.05~0.5 of the pump shaft (132) diameter；
And/or the screw pitch of the helicla flute (1321) is the 0.1~0.5 of the pump shaft (132) diameter.
10. shielded electric pump according to any one of claims 1 to 4, which is characterized in that the rotor (131) and the pump
Axis (132) is structure as a whole；
Alternatively, the rotor (131) and the pump shaft (132) are interference fit.
11. shielded electric pump according to any one of claims 1 to 4, which is characterized in that the housing unit (110) includes
Inner casing (111), the shell (112) for being sheathed on the inner casing (111) and the pump case (113) for being located at the inner casing (111) side, institute
It states inner casing (111) to connect with the shell (112) and the pump case (113) respectively, the pump shaft (132) is located at the inner casing
(111) in, and one end of the pump shaft (132) wears the inner casing (111) and protrudes into the inner casing (111) and the pump case
(113) between, the pump shaft (132) is supported on the inner casing (111) by the sliding bearing (121)；The inner casing (111)
Cavity between cavity between the pump case (113) and the inner casing (111) and the shell (112) is mutually indepedent.
12. shielded electric pump according to claim 11, which is characterized in that the shielded electric pump further includes closeouts (160),
There is air vent, the air vent corresponds to the helicla flute (1321) setting, and the air vent is connected to institute on the inner casing (111)
Helicla flute (1321) and external environment are stated, the closeouts (160) are installed in the air vent, for sealing the inner casing
(111)。
13. shielded electric pump according to claim 11, which is characterized in that the pump shaft (132) has in axial direction
Runner (1322), the runner (1322) are connected to the inner casing (111), for for the liquid medium in the inner casing (111)
It flows through.
14. shielded electric pump according to claim 13, which is characterized in that the stepped setting of the runner (1322), and
The sectional dimension streamwise of the runner (1322) gradually increases.
15. shielded electric pump according to claim 14, which is characterized in that the rotor assembly (130) further includes non return part
(133), it is set at the ladder of the runner (1322), for limiting the medium back flow.
16. a kind of liquid-supplying system, which is characterized in that including the described in any item shielded electric pumps of such as claim 1 to 15 (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821244313.1U CN208634052U (en) | 2018-08-02 | 2018-08-02 | Liquid supply system and shielding electric pump thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821244313.1U CN208634052U (en) | 2018-08-02 | 2018-08-02 | Liquid supply system and shielding electric pump thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634052U true CN208634052U (en) | 2019-03-22 |
Family
ID=65740557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821244313.1U Active CN208634052U (en) | 2018-08-02 | 2018-08-02 | Liquid supply system and shielding electric pump thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869324A (en) * | 2018-08-02 | 2018-11-23 | 珠海格力电器股份有限公司 | Liquid supply system and shielding electric pump thereof |
-
2018
- 2018-08-02 CN CN201821244313.1U patent/CN208634052U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869324A (en) * | 2018-08-02 | 2018-11-23 | 珠海格力电器股份有限公司 | Liquid supply system and shielding electric pump thereof |
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