CN206377058U - The water pump of rotor chamber internal and external pressure balance - Google Patents
The water pump of rotor chamber internal and external pressure balance Download PDFInfo
- Publication number
- CN206377058U CN206377058U CN201720012856.XU CN201720012856U CN206377058U CN 206377058 U CN206377058 U CN 206377058U CN 201720012856 U CN201720012856 U CN 201720012856U CN 206377058 U CN206377058 U CN 206377058U
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- sealing
- rotor chamber
- bearing
- external pressure
- water pump
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Abstract
The utility model discloses a kind of water pump of rotor chamber internal and external pressure balance, it includes the pump housing, there is rotor chamber in the pump housing, the one end of the pump housing has bearing assembly, the bearing assembly has bearing block and sealing, it is formed between the bearing block and the sealing in the exhaust clearance being communicated with the outside, the sealing and is provided with the exhaust passage for being connected with exhaust clearance and being connected simultaneously with the rotor chamber.The utility model can balance the inside and outside differential pressure of rotor chamber, and avoid foreign matter from entering rotor chamber, cause the phenomenon of motor failure.
Description
Technical field
The utility model is related to a kind of water pump of rotor chamber internal and external pressure balance.
Background technology
At present, water pump, due to the heat of self-operating generation and colding and heat succeed each other for outside water temperature, is led in operation process
Cause water pump rotor intracavitary external pressure uneven, when rotor chamber internal pressure is less than rotor chamber external pressure, sealing and axle
Hold and moved axially in the presence of rotor chamber external pressure, cause sealing, bearing and magnet ring to rub, reduce electricity
The startability of machine, life-span.
There is the water pump of exhaust structure in the presence of some in the prior art, but the setting of these exhaust structures, easily make mud
The foreign matter of the fine particles such as sand is entered inside water pump by exhaust structure, is easily caused the foreign matter and rotor abrasion of fine particle,
So that motor failure.
The content of the invention
Technical problem to be solved in the utility model is to overcome the defect of prior art there is provided external pressure in a kind of rotor chamber
The water pump of dynamic balance, it can balance the inside and outside differential pressure of rotor chamber, and avoid foreign matter from entering rotor chamber, cause showing for motor failure
As.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of rotor chamber internal and external pressure balance
Water pump, it includes having rotor chamber in the pump housing, the pump housing, and the one end of the pump housing has bearing assembly, the bearing group
Part has bearing block and sealing, and the exhaust clearance being communicated with the outside is formed between the bearing block and the sealing,
The exhaust passage for being connected with exhaust clearance and being connected simultaneously with the rotor chamber is provided with the sealing.
Further for effectively preventing water from entering rotor chamber in large quantities, and avoid foreign matter logical by exhaust well simultaneously
Road, which enters in the phenomenon of rotor chamber, the sealing, is provided with hermetic unit, and the exhaust passage is arranged on close in sealing
On position between envelope part and the rotor chamber.
Further, the sealing has radial extension and axially-extending portion, and the hermetic unit, which is arranged on, axially to be prolonged
In extending portion, the exhaust passage is arranged in radial extension.
Further, the hermetic unit includes the sealed muscle being at least arranged on together in sealing.
Further, the exhaust passage is at least one steam vent.
Further, the axial cross section of the steam vent is circular or ellipse.
Further, the bearing assembly is supported between the casing of the pump housing and axle, and the bearing assembly also has bearing, axle
Bearing is arranged on the outside of sealing, and bearing is arranged on the inner side of sealing.
Further for that during water pump operation, can adjust bearing and motor shaft concentricity, the sealing has
One coordinates the tapered end of the concentricity for use in adjustment bearing and axle with bearing block, and the lateral wall of the tapered end is cone
Shape structure.
Further in axle rotation process, reduce the frictional force between sealing and axle, and in the more feelings of silt
Under condition, it can be effectively improved and be contacted on the sediment prevention function of motor, the madial wall of the tapered end with axle by sealing lip
Position there is sealing lip.
Further for abundant exhaust, it is provided between the axle and bearing and/or between the bearing and sealing secondary
Exhaust clearance.
Employ after above-mentioned technical proposal, the utility model has following beneficial effect：
1st, when rotor cavity pressure is less than rotor chamber external pressure, extraneous gas impeller-hub, bearing and sealing are to rotor
Chamber side is moved, and extraneous gas enters rotor chamber, Ke Yitong by the exhaust clearance between sealing and bearing block and exhaust passage
Cross exhaust passage balance pressure；When rotor cavity pressure is more than rotor chamber external pressure, internal gas passes through exhaust passage and axle
Exhaust clearance discharge rotor chamber between sealing and bearing block, secondary exhaust clearance that certainly can also be between axle and bearing, axle
Hold the secondary exhaust clearance discharge between sealing；
2nd, exhaust passage is arranged at the radial extension of sealing and close to rotor chamber side, and it is close that the exhaust passage is in axle
Envelope and bearing block gap mating part, are conducive to the smooth conducting of inside and outside gas；And it is arranged on compared to by exhaust passage
The outside of the sealed muscle of sealing, that is, the side away from rotor chamber, can be prevented effectively from silt and enter rotor from exhaust passage
The phenomenon of chamber；
3rd, bearing and the tapered end of sealing are coordinated, and are bearing block, bearing block on the outside of sealing tapered end
There is gap between the tapered end of sealing, in draining pump running, the tapered end of sealing has adjustment bearing
With the effect of the concentricity of axle；Tapered end is conducive to adjusting the concentricity of bearing and axle, reduces product friction noise, improves production
Product life performance；
4th, in axle rotation process, in order to reduce the frictional force between sealing and axle, line is used between sealing lip and axle
Contact sealing, in the case where silt is more, the sediment prevention that can effectively improve motor by sealing lip is acted on.
Brief description of the drawings
Fig. 1 is the structure sectional view of the water pump of rotor chamber internal and external pressure balance of the present utility model；
Fig. 2 is the structural representation of bearing assembly of the present utility model；
Fig. 3 is Fig. 2 A-A sectional views.
Embodiment
In order that content of the present utility model is easier to be clearly understood, below according to specific embodiment and with reference to attached
Figure, is described in further detail to the utility model.
As shown in Figures 1 to 3, a kind of water pump of rotor chamber internal and external pressure balance, it, which includes having in the pump housing, the pump housing, turns
Sub- chamber 10, the one end of the pump housing has bearing assembly, and the bearing assembly has bearing block 1 and sealing 2, the bearing
It is formed between seat 1 and the sealing 2 in the exhaust clearance being communicated with the outside, the sealing 2 between being provided with and being vented
The exhaust passage that gap is connected and is connected simultaneously with the rotor chamber 10.
As shown in figure 3, being provided with hermetic unit in the sealing 2, the exhaust passage is arranged on close in sealing 2
On position between envelope part and the rotor chamber 10；Wherein, the hermetic unit includes at least being arranged on together in sealing 2
Sealed muscle 23, in the present embodiment, sealed muscle 23 be provided with together.
As shown in figure 3, the sealing 2 has radial extension 21 and axially-extending portion 22, the hermetic unit is set
In axially-extending portion 22, the exhaust passage is arranged in radial extension 21.Exhaust passage is placed on to the footpath of sealing 2
To extension 21 close to rotor chamber side (inner side of sealed muscle 23, close to the side of rotor chamber 10), the situation of pressure imbalance, gas
It can be discharged by exhaust passage, due to the effect of sealed muscle 23, can effectively prevent water is substantial amounts of to flow into rotor chamber 10；
In addition, the radial extension 21 that exhaust passage is placed on into sealing 2 can have close to the side of rotor chamber 10 (inner side of sealed muscle 23)
Effect avoids phenomenon of the silt from exhaust passage into rotor chamber 10；
As shown in figure 3, the exhaust passage is at least one steam vent 24.Steam vent 24 does not limit its number.
The axial cross section of the steam vent 24 is circular or ellipse, but not limited to this.
As shown in figure 1, the bearing assembly is supported between the casing 3 of the pump housing and axle 4, the bearing assembly also has axle
5 are held, bearing block 1 is arranged on the outside of sealing 2, bearing 5 is arranged on the inner side of sealing 2；Certainly, the pump housing also includes turning
Son 7 and stator 8 and impeller 9, rotor 7 are arranged on axle 4, and are placed in the rotor chamber 10, and casing 3 is the stator of the pump housing
In 8 part, the installation axle 4 of impeller 9.The steam vent 24 is not concentric with axle 4 along the axially arranged of axle 4, is in
Eccentric position.
As shown in figure 3, the sealing 2 has one to coordinate to adjust the concentric of bearing 5 and axle 4 with bearing block 1
The tapered end 25 of degree, the lateral wall of the tapered end 25 is pyramidal structure.Bearing 5 and the tapered end 25 of sealing 2 enter
Row coordinates, and is bearing block 1 on the outside of the tapered end 25 of sealing 2, exists between the tapered end 25 of bearing block 1 and sealing 2
Gap, in draining pump running, the tapered end 25 of sealing 2 has adjustment bearing 5 and the effect of the concentricity of axle 4；Cone
Shape end 25 is conducive to adjusting the concentricity of bearing 5 and axle 4, reduces product friction noise, improves product lifetime performance.
As shown in figure 3, the position contacted on the madial wall of the tapered end 25 with axle 4 has sealing lip 26, at this
In embodiment, the sealing lip 26 is provided with two.In the rotation process of axle 4, in order to reduce rubbing between sealing 2 and axle 4
Power is wiped, line contact sealing is used between sealing lip 26 and axle 4, can be with by sealing lip 26 in the case where silt is more
Effectively improve the sediment prevention effect of motor.
Time exhaust clearance is provided between the axle 4 and bearing 5 and/or between the bearing 5 and sealing 2.
When rotor cavity pressure is less than rotor chamber external pressure, extraneous gas impeller-hub 4, bearing 5 and sealing 2 are to rotor
The side of chamber 10 is moved, and extraneous gas enters rotor chamber 10 by the exhaust clearance between sealing 2 and bearing block 1 and exhaust passage,
Pressure can be balanced by exhaust passage；When rotor cavity pressure is more than rotor chamber external pressure, internal gas is logical by exhaust
Between road and sealing 2 and bearing block 1 exhaust clearance discharge rotor chamber 10, certainly can also be between axle 4 and bearing 5 time
Secondary exhaust clearance discharge between exhaust clearance, bearing 5 and sealing 2.
Particular embodiments described above, enters to technical problem, technical scheme and the beneficial effect that the utility model is solved
Go further description, should be understood that and the foregoing is only specific embodiment of the utility model, and without
It is all within spirit of the present utility model and principle in limitation the utility model, any modification, equivalent substitution and improvements done
Deng should be included within protection domain of the present utility model.
Claims (10)
1. a kind of water pump of rotor chamber internal and external pressure balance, it includes having rotor chamber (10), the pump in the pump housing, the pump housing
The one end of body has bearing assembly, and the bearing assembly has bearing block (1) and sealing (2), it is characterised in that：The axle
It is formed with the exhaust clearance being communicated with the outside, the sealing (2) and is provided between bearing (1) and the sealing (2)
It is connected with exhaust clearance and while the exhaust passage being connected with the rotor chamber (10).
2. the water pump of rotor chamber internal and external pressure balance according to claim 1, it is characterised in that：On the sealing (2)
Hermetic unit is provided with, the exhaust passage is arranged between the hermetic unit in sealing (2) and the rotor chamber (10)
On position.
3. the water pump of rotor chamber internal and external pressure balance according to claim 2, it is characterised in that：Sealing (2) tool
There are radial extension (21) and axially-extending portion (22), the hermetic unit is arranged in axially-extending portion (22), the exhaust
Passage is arranged in radial extension (21).
4. the water pump of rotor chamber internal and external pressure balance according to claim 2, it is characterised in that：The hermetic unit includes
The sealed muscle (23) in sealing (2) is at least arranged on together.
5. the water pump of rotor chamber internal and external pressure balance according to claim 1, it is characterised in that：The exhaust passage is extremely
A few steam vent (24).
6. the water pump of rotor chamber internal and external pressure balance according to claim 5, it is characterised in that：The steam vent (24)
Axial cross section is circular or ellipse.
7. the water pump of rotor chamber internal and external pressure balance according to claim 1, it is characterised in that：The bearing assembly supporting
Between the casing (3) and axle (4) of the pump housing, the bearing assembly also has bearing (5), and bearing block (1) is arranged on sealing (2)
Outside, bearing (5) is arranged on the inner side of sealing (2).
8. the water pump of rotor chamber internal and external pressure balance according to claim 7, it is characterised in that：Sealing (2) tool
There is one to coordinate to adjust bearing (5) and the tapered end (25) of the concentricity of axle (4), the taper with bearing block (1)
The lateral wall of end (25) is pyramidal structure.
9. the water pump of rotor chamber internal and external pressure balance according to claim 8, it is characterised in that：The tapered end (25)
Madial wall on the position that is contacted with axle (4) there is sealing lip (26).
10. the water pump of rotor chamber internal and external pressure balance according to claim 7, it is characterised in that：The axle (4) and bearing
(5) time exhaust clearance is provided between and/or between the bearing (5) and sealing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720012856.XU CN206377058U (en) | 2017-01-05 | 2017-01-05 | The water pump of rotor chamber internal and external pressure balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720012856.XU CN206377058U (en) | 2017-01-05 | 2017-01-05 | The water pump of rotor chamber internal and external pressure balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206377058U true CN206377058U (en) | 2017-08-04 |
Family
ID=59403955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720012856.XU Active CN206377058U (en) | 2017-01-05 | 2017-01-05 | The water pump of rotor chamber internal and external pressure balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206377058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483797A (en) * | 2022-02-14 | 2022-05-13 | 西北工业大学 | Bearing sealing method in high-pollution environment |
-
2017
- 2017-01-05 CN CN201720012856.XU patent/CN206377058U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483797A (en) * | 2022-02-14 | 2022-05-13 | 西北工业大学 | Bearing sealing method in high-pollution environment |
| CN114483797B (en) * | 2022-02-14 | 2023-10-31 | 西北工业大学 | Bearing sealing method under high pollution environment |
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