CN219101681U - Bearing, rotor assembly and centrifugal water pump - Google Patents
Bearing, rotor assembly and centrifugal water pump Download PDFInfo
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- CN219101681U CN219101681U CN202223406795.5U CN202223406795U CN219101681U CN 219101681 U CN219101681 U CN 219101681U CN 202223406795 U CN202223406795 U CN 202223406795U CN 219101681 U CN219101681 U CN 219101681U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 11
- 239000007787 solid Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000005389 magnetism Effects 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
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a bearing, a rotor assembly and a centrifugal water pump, and relates to the technical field of water pumps and parts thereof, comprising a bearing body, wherein the bearing body is provided with inner holes penetrating through two end surfaces of the bearing body along the axial direction of the bearing body; spiral diversion trenches are arranged in the inner holes of the bearing body, and two ends of each diversion trench are respectively communicated to two end faces of the bearing body. The utility model mainly solves the problem that fine impurities are easy to accumulate in a gap between a shaft core and a bearing of a rotor assembly; when the bearing and the rotor assembly are applied to the centrifugal water pump, a flow channel is formed between the diversion trench in the inner hole of the bearing body and the shaft core of the centrifugal water pump, water flow can be allowed to pass through the diversion trench, solid impurities are easily carried out by the water flow, so that scale is not easy to form between the bearing body and the shaft core, and the rotor assembly of the centrifugal water pump can be effectively prevented from being blocked.
Description
Technical Field
The utility model relates to the technical field of water pumps and parts thereof, in particular to a bearing, a rotor assembly and a centrifugal water pump.
Background
The centrifugal water pump can drive liquid to flow, so that the liquid can flow from one place to another place in a directional manner, and the centrifugal water pump is a mechanical device with wide application.
The centrifugal water pump generally comprises a stator assembly and a rotor assembly, wherein when current is introduced into the stator assembly, the stator assembly can generate a rotating magnetic field, the rotor assembly is driven by the coupling of the rotating magnetic field to rotate relative to the stator assembly by taking a shaft core as a rotating shaft, and an impeller on the rotor assembly can drive liquid to flow during rotation, so that the operation process of the centrifugal water pump is completed.
In the prior art, fine impurities are easily accumulated in a gap between a shaft core and a bearing of a rotor assembly, if the impurities are not removed in time, scale which is difficult to remove can be reduced, and when the amount of the scale reaches a certain degree, the rotor assembly is blocked and cannot rotate.
Disclosure of Invention
It is an object of the present utility model to provide a bearing which can prevent the accumulation of impurities in the gap between itself and the shaft core when applied to a water pump.
Another object of the present utility model is to provide a rotor assembly that is able to avoid accumulation of impurities in the gap between its own bearing and the shaft core, thus avoiding seizing.
It is still another object of the present utility model to provide a centrifugal water pump capable of preventing a rotor assembly from being stuck due to accumulation of foreign substances.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the bearing comprises a bearing body, wherein the bearing body is provided with inner holes penetrating through two end surfaces of the bearing body along the axial direction of the bearing body; the bearing is characterized in that a spiral diversion trench is arranged in an inner hole of the bearing body, and two ends of the diversion trench are respectively communicated to two end faces of the bearing body.
In the above technical scheme, the bearing body is an integrally formed cylindrical workpiece made of graphite/ceramic.
A rotor assembly comprising the bearing; the rotor support, the magnetic ring and the impeller are also included; the bearing body is arranged in the rotor bracket in a penetrating way and is coaxially arranged with the rotor bracket, and the magnetic ring is sleeved on the rotor bracket and is coaxially arranged with the rotor bracket; one end of the rotor support extends along the radial direction to form an impeller mounting part, and the impeller is fixed on the impeller mounting part.
In the above technical scheme, the rotor bracket is integrally formed with the bearing body and the magnetic ring in an in-mold injection molding manner.
In the above technical scheme, the impeller is fixed on the impeller mounting portion of the rotor bracket in one of ultrasonic welding, interference fit, screw locking and fastening.
A centrifugal water pump comprising the rotor assembly described above; the pump also comprises a pump shell, a pump cover, a shaft core and a stator assembly; a rotor chamber is formed in the pump shell, and a first shaft core seat is formed at the bottom of the rotor chamber; a second axial core seat is formed in the pump cover, the pump cover and the pump shell are combined and fixed with each other, a cavity is formed in the pump cover, the first axial core seat of the pump shell and the second axial core seat of the pump cover are opposite to each other, and a water inlet and a water outlet which are communicated with the cavity are respectively formed in the pump cover; the two ends of the shaft core are respectively inserted and fixed into a first shaft core seat of the pump shell and a second shaft core seat of the pump cover, and the bearing body of the rotor assembly is sleeved on the shaft core, so that the magnetic ring of the rotor assembly is supported in the rotor chamber, and the impeller of the rotor assembly is supported in the chamber; the stator assembly is arranged in the pump shell and surrounds the outside of the rotor chamber, so that the stator assembly can magnetically couple and link the rotor assembly to rotate.
In the above technical scheme, at least a part of the overlapping position of the shaft core and the bearing body is narrowed to form a narrowed portion.
In the technical scheme, the end faces of the first shaft core seat of the pump shell and the second shaft core seat of the pump cover are respectively provided with a thrust washer.
Compared with the prior art, the utility model has the beneficial effects that:
1. when the bearing and the rotor assembly are applied to the centrifugal water pump, a flow channel is formed between the diversion trench in the inner hole of the bearing body and the shaft core of the centrifugal water pump, water flow can be allowed to pass through the diversion trench, solid impurities are easily carried out by the water flow, so that scale is not easy to form between the bearing body and the shaft core, and the rotor assembly of the centrifugal water pump can be effectively prevented from being blocked.
2. According to the centrifugal water pump, the flow channel is formed between the diversion trench in the inner hole of the bearing body and the shaft core, so that water flow can be allowed to pass through the diversion trench, solid impurities are easily carried out by the water flow, scale is not easy to form between the bearing body and the shaft core, and the rotor assembly can be effectively prevented from being blocked.
Drawings
Fig. 1 is a perspective view of a first embodiment of the present utility model.
Fig. 2 is a cross-sectional view of a first embodiment of the present utility model.
Fig. 3 is a perspective view of a second embodiment of the present utility model.
Fig. 4 is an exploded view of a second embodiment of the present utility model.
Fig. 5 is a cross-sectional view of a second embodiment of the present utility model.
Fig. 6 is a structural view of a third embodiment of the present utility model.
Fig. 7 is a partial enlarged view of a in fig. 6.
The reference numerals are: 1. a bearing body; 11. an inner bore; 12. a diversion trench; 2. a rotor bracket; 21. an impeller mounting portion; 3. a magnetic ring; 4. an impeller; 5. a pump housing; 51. a rotor chamber; 52. a first mandrel base; 6. a pump cover; 61. a chamber; 62. a second axle core seat; 63. a water inlet; 7. a shaft core; 71. a narrowing portion; 8. a stator assembly; 9. thrust washers.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment one:
the present embodiment provides a bearing that can be applied in a centrifugal water pump for supporting a rotor assembly of the centrifugal water pump on a shaft core.
Referring to fig. 1 and 2, the bearing of the present embodiment includes a bearing body 1, in which an inner hole 11 penetrating through two end surfaces of the bearing body 1 is formed along an axial direction of the bearing body, and in practice, the inner hole 11 is a cylindrical straight hole for passing through a shaft core; the inner bore 11 of the bearing body 1 is provided with a spiral guide groove 12, specifically, the guide groove 12 is a groove body part in the inner bore 11 of the bearing body 1, and two ends of the guide groove 12 are respectively communicated with two end surfaces of the bearing body 1.
The bearing body 1 is a cylindrical workpiece made of graphite/ceramic integrally formed, so that the bearing body 1 has a self-lubricating function.
When the bearing of the embodiment is applied to a centrifugal water pump, a flow channel is formed between the diversion trench 12 in the inner hole 11 and the shaft core of the centrifugal water pump, water flow can be allowed to pass through the diversion trench, and solid impurities are easily carried out by the water flow, so that scale is not easy to form between the bearing body 1 and the shaft core, and the rotor assembly of the centrifugal water pump can be effectively prevented from being blocked.
Embodiment two:
the present embodiment provides a rotor assembly that can be applied in a centrifugal water pump that can drive a liquid flow when rotating.
Referring to fig. 3-5, the rotor assembly of the present embodiment includes the bearing of the first embodiment, and further includes a rotor support 2, a magnetic ring 3, and an impeller 4.
Wherein, the rotor bracket 2 is an integrally injection molded annular bracket for providing an integral supporting foundation for the rotor assembly of the embodiment; the magnetic ring 3 is a metal ring body with magnetism and can be magnetically coupled with the stator assembly 8 so as to drive the rotor assembly to rotate; the impeller 4 is an engineering plastic workpiece with a plurality of blades, and the blades can drive water flow.
The bearing body 1 is arranged in the rotor bracket 2 in a penetrating way and is arranged coaxially with the rotor bracket 2, and the magnetic ring 3 is sleeved on the rotor bracket 2 and is arranged coaxially with the rotor bracket 2; in this way, the bearing body 1, the magnetic ring 3 and the rotor support 2 are all coaxial; one end of the rotor frame 2 is extended in a radial direction thereof to form an impeller mounting portion 21, that is, the impeller mounting portion 21 has a larger diameter than a body portion of the rotor frame 2, thereby forming a platform for fixing the impeller 4, and the impeller 4 is fixed to the impeller mounting portion 21.
Specifically, the rotor bracket 2 is molded into a whole with the bearing body 1 and the magnetic ring 3 by means of in-mold injection; in fact, a key groove is formed in the outer wall of the bearing body 1, and when the rotor bracket 2 is molded, a key is correspondingly formed at the key groove position of the bearing body 1, so that the rotor bracket 2 can be tightly matched with the bearing body 1; when the rotor bracket 2 is molded, concave holes/convex ribs are correspondingly formed at the positions of the convex ribs/concave holes of the magnetic ring 3, so that the rotor bracket 2 and the magnetic ring 3 can be tightly matched.
Specifically, the impeller 4 is fixed on the impeller mounting portion 21 of the rotor support 2 in one of ultrasonic welding, interference fit, screw locking and fastening, and in this embodiment, the impeller 4 is fixed on the impeller mounting portion 21 of the rotor support 2 in an ultrasonic welding manner, so that the impeller 4 and the rotor support 2 are integrated and are not easy to fall off.
When the rotor assembly of the embodiment is applied to a centrifugal water pump, a flow channel is formed between the diversion trench 12 in the inner hole 11 of the bearing body 1 and the shaft core of the centrifugal water pump, water flow can be allowed to pass through the diversion trench, and solid impurities are easily carried out by the water flow, so that scale is not easy to form between the bearing body 1 and the shaft core, and the rotor assembly of the centrifugal water pump can be effectively prevented from being blocked.
Embodiment III:
referring to fig. 6 and 7, the present embodiment provides a centrifugal water pump, which includes the rotor assembly of the second embodiment; it further comprises a pump housing 5, a pump cover 6, a shaft core 7 and a stator assembly 8.
The pump shell 5 is an integrally formed half shell, which can be made of engineering plastic or metal, and the pump shell 5 is used for providing a part of a shell for the water pump; the pump cover 6 is also an integrally formed half shell, the material of which is the same as that of the pump shell 5, and the pump cover 6 is used for providing the other part of the shell for the water pump; the shaft core 7 is a cylindrical shaft made of metal, has rigidity and can allow a bearing to be sleeved in; the stator assembly 8 is a coil assembly, and when a current is applied to the stator assembly 8, a rotating magnetic field can be formed in the space inside the stator assembly.
A rotor chamber 5 is formed in the pump housing 5, and a first shaft core seat 52 is formed at the bottom of the rotor chamber 5; in this embodiment, the end surface in the pump housing 5 is sunk to form the rotor chamber 5, and the first shaft core seat 52 and the pump housing 5 are integrally formed; a second axial core seat 62 is formed in the pump cover 6, and the second axial core seat 62 is integrally formed with the pump cover 6 and is supported in the pump cover 6 through a supporting arm; in fact, both the first and second mandrel seats 52, 62 are shape-matched to the mandrel 7, capable of allowing the insertion of one end of the mandrel 7 therein; the pump cover 6 and the pump casing 5 are combined and fixed with each other (specifically, fixed with each other by screws), so that a cavity 61 is formed in the pump cover 6, the first shaft core seat 52 of the pump casing 5 and the second shaft core seat 62 of the pump cover 6 are opposite to each other, a water inlet 63 and a water outlet (not shown) which are communicated with the cavity 61 are also formed on the pump cover 6, specifically, the water inlet 63 is arranged on the end face of the pump casing 5 along the axial direction of the pump casing 5, and the water outlet is arranged on the side face of the pump casing 5 along the radial direction of the pump casing 5; both ends of the shaft core 7 are respectively inserted and fixed into the first shaft core seat 52 of the pump housing 5 and the second shaft core seat 62 of the pump cover 6, the bearing body 1 of the rotor assembly is sleeved on the shaft core 7, the magnetic ring 3 of the rotor assembly is supported in the rotor chamber 5, and the impeller 4 of the rotor assembly is supported in the chamber 61, at this time, the whole rotor assembly can rotate with the shaft core 7 as a rotation axis under the support of the bearing body 1.
The stator assembly 8 is disposed within the pump housing 5 (which is specifically secured by one of adhesive, snap fit, or interference fit) and surrounds the rotor chamber 5 such that the stator assembly 8 is capable of magnetically coupling the rotor assembly for rotation.
Further, at least a part of the overlapping position of the shaft core 7 and the bearing body 1 is narrowed to form a narrowed portion 71, so that the contact area between the shaft core 7 and the bearing body 1 can effectively reduce the friction force between the shaft core 7 and the bearing body 1 and improve the flow rate between the shaft core 7 and the bearing body 1.
Further, the thrust washers 9 are respectively provided on the end surfaces of the first shaft core seat 52 of the pump casing 5 and the second shaft core seat 62 of the pump cover 6, the thrust washers 9 are made of wear-resistant metal, and the thrust washers 9 are provided, so that the bearing body 1 and the first shaft core seat 52/the second shaft core seat 62 can be prevented from directly rubbing, and the service lives of the bearing body 1, the pump casing 5 and the pump cover 6 can be prolonged.
When the centrifugal water pump of the embodiment is used, the stator assembly 8 is electrified, so that a rotating magnetic field is formed in the space inside the stator assembly 8, the whole rotor assembly is driven to rotate in the rotor chamber 5 and the chamber 61 through magnetic coupling of the magnetic ring 3, the rotating impeller 4 can drive liquid to flow along the blades of the impeller, so that the liquid is sucked into the chamber 61 after passing through the water inlet 63, pressure is generated by the liquid under the driving of the impeller 4, and the liquid can directionally flow under the guidance of the pump cover 6 and is discharged from the water outlet.
In the centrifugal water pump of this embodiment, a flow channel is formed between the diversion trench 12 in the inner hole 11 of the bearing body 1 and the shaft core 7, so that water flow can be allowed to pass through the diversion trench, and solid impurities are easily carried out by the water flow, so that scale is not easily formed between the bearing body 1 and the shaft core 7, and the rotor assembly can be effectively prevented from being blocked.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The bearing comprises a bearing body, wherein the bearing body is provided with inner holes penetrating through two end surfaces of the bearing body along the axial direction of the bearing body; it is characterized in that the method comprises the steps of,
the bearing is characterized in that a spiral diversion trench is arranged in an inner hole of the bearing body, and two ends of the diversion trench are respectively communicated to two end faces of the bearing body.
2. A bearing according to claim 1, wherein: the bearing body is a cylindrical workpiece made of graphite/ceramic and formed integrally.
3. A rotor assembly comprising a bearing according to any one of claims 1-2;
the rotor support, the magnetic ring and the impeller are also included;
the bearing body is arranged in the rotor bracket in a penetrating way and is coaxially arranged with the rotor bracket, and the magnetic ring is sleeved on the rotor bracket and is coaxially arranged with the rotor bracket;
one end of the rotor support extends along the radial direction to form an impeller mounting part, and the impeller is fixed on the impeller mounting part.
4. A rotor assembly as claimed in claim 3, wherein: the rotor support is integrally formed with the bearing body and the magnetic ring in an in-mold injection molding mode.
5. A rotor assembly as claimed in claim 3, wherein: the impeller is fixed on the impeller mounting part of the rotor bracket in one of ultrasonic welding, interference fit, screw locking and fastening.
6. A centrifugal water pump comprising a rotor assembly according to any one of claims 3-5; the pump also comprises a pump shell, a pump cover, a shaft core and a stator assembly;
a rotor chamber is formed in the pump shell, and a first shaft core seat is formed at the bottom of the rotor chamber;
a second axial core seat is formed in the pump cover, the pump cover and the pump shell are combined and fixed with each other, a cavity is formed in the pump cover, the first axial core seat of the pump shell and the second axial core seat of the pump cover are opposite to each other, and a water inlet and a water outlet which are communicated with the cavity are respectively formed in the pump cover;
the two ends of the shaft core are respectively inserted and fixed into a first shaft core seat of the pump shell and a second shaft core seat of the pump cover, and the bearing body of the rotor assembly is sleeved on the shaft core, so that the magnetic ring of the rotor assembly is supported in the rotor chamber, and the impeller of the rotor assembly is supported in the chamber;
the stator assembly is arranged in the pump shell and surrounds the outside of the rotor chamber, so that the stator assembly can magnetically couple and link the rotor assembly to rotate.
7. The centrifugal water pump according to claim 6, wherein: at least a part of the overlapping position of the shaft core and the bearing body is narrowed to form a narrowed part.
8. The centrifugal water pump according to claim 6, wherein: and the end surfaces of the first shaft core seat of the pump shell and the second shaft core seat of the pump cover are respectively provided with a thrust washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223406795.5U CN219101681U (en) | 2022-12-20 | 2022-12-20 | Bearing, rotor assembly and centrifugal water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223406795.5U CN219101681U (en) | 2022-12-20 | 2022-12-20 | Bearing, rotor assembly and centrifugal water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219101681U true CN219101681U (en) | 2023-05-30 |
Family
ID=86464748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223406795.5U Active CN219101681U (en) | 2022-12-20 | 2022-12-20 | Bearing, rotor assembly and centrifugal water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219101681U (en) |
-
2022
- 2022-12-20 CN CN202223406795.5U patent/CN219101681U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 30 Dapu Industrial Street, Changping Town, Dongguan City, Guangdong Province, 523000 Patentee after: Guangdong Shenpeng Technology Co.,Ltd. Country or region after: China Address before: 523000 Gangzi Dapu Industrial Zone, Changping Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN SHENPENG ELECTRONICS Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |