CN210599549U - Impeller anti-abrasion structure on water pump - Google Patents
Impeller anti-abrasion structure on water pump Download PDFInfo
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- CN210599549U CN210599549U CN201921500720.9U CN201921500720U CN210599549U CN 210599549 U CN210599549 U CN 210599549U CN 201921500720 U CN201921500720 U CN 201921500720U CN 210599549 U CN210599549 U CN 210599549U
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Abstract
The utility model discloses an impeller anti-abrasion structure on a water pump, which comprises a motor, a bracket and a pump body, wherein the motor comprises a shell, a stator, a rotor and a rotating shaft connected to the center of the rotor, and the rotating shaft sequentially comprises a first shaft section, a second shaft section, a third shaft section, a fourth shaft section, a fifth shaft section and a sixth shaft section from bottom to top; the cross section of the fifth shaft section is a closed path formed by three equal-length circular arcs and three equal-length line sections which are connected end to end at intervals, and the three circular arcs are arc sections on the same circle; the shape of the shaft hole in the center of the impeller is matched and butted with that of the fifth shaft section, and the size of the shaft hole is larger than that of the fifth shaft section; the sixth shaft section is provided with an external thread, and the fastening nut is screwed on the sixth shaft section; the outer end of the shaft hole of the impeller is provided with a step hole, the inner end of the fastening nut is provided with a raised step, and the raised step is inserted into the step hole in a matching manner. The utility model discloses a processing degree of difficulty is low, and low in production cost can effectually prevent impeller axial displacement, wearing and tearing, improves the stability of impeller assembly back operation.
Description
Technical Field
The utility model relates to an impeller abrasionproof on water pump decreases structure.
Background
The existing water pump has tolerance in size when a rotating shaft of a motor is machined, the rotating shaft has the possibility of displacement along the axial direction in actual use, so that the assembly position of an impeller deviates, and the inner end face and the outer end face of the impeller collide and rub with the inner walls of an insert and a pump body, so that the service life of the impeller is seriously influenced, and meanwhile, the use performance of the water pump is also influenced.
Disclosure of Invention
The utility model aims to solve the technical problem that an impeller abrasionproof decreases structure on water pump is provided, it can prevent that the relative pivot of impeller from having the removal displacement, prevents that impeller and inserts from bumping, rubbing to improve the assembly efficiency of impeller.
In order to solve the technical problem, the utility model relates to a technical solution of impeller abrasionproof decreases structure on water pump does:
an impeller abrasion-proof structure on a water pump comprises a motor, a support and a pump body, wherein the motor comprises a shell, a stator, a rotor and a rotating shaft connected to the center of the rotor, the rotating shaft sequentially comprises a first shaft section, a second shaft section, a third shaft section, a fourth shaft section, a fifth shaft section and a sixth shaft section from bottom to top, and steps are formed between the first shaft section and the second shaft section, between the second shaft section and the third shaft section, between the third shaft section and the fourth shaft section, between the fourth shaft section and the fifth shaft section and between the fifth shaft section and the sixth shaft section; a heat radiation fan is arranged on the first shaft section; the second shaft section and the fourth shaft section are respectively provided with a bearing, and the bearings are fixed in bearing mounting grooves of the shell; the rotor is arranged on the third shaft section; the fourth shaft section is also provided with a mechanical seal; the cross section of the fifth shaft section is a closed path formed by three equal-length circular arcs and three equal-length line sections which are connected end to end at intervals, and the three circular arcs are arc sections on the same circle; the shape of the shaft hole in the center of the impeller is matched and butted with that of the fifth shaft section, and the size of the shaft hole is larger than that of the fifth shaft section; the sixth shaft section is provided with an external thread, and a fastening nut is screwed on the sixth shaft section; the impeller comprises a wheel disc and a plurality of blades which are uniformly distributed on the periphery of the wheel disc in a circumferential manner, the shaft hole is positioned in the center of the wheel disc, a step hole is formed in the outer end of the shaft hole, a raised step is arranged at the inner end of the fastening nut, the outer ring of the raised step is a pressing surface of the fastening nut, the raised step is inserted into the step hole in a matched manner, and the pressing surface is pressed on the outer end surface of the wheel disc in a matched manner; one end of the mechanical seal is abutted against the support, and the other end of the mechanical seal is abutted against the inner end of the impeller.
The mechanical seal comprises a static ring and a dynamic ring, the shape of the jack of the dynamic ring is consistent with the cross section of the fifth shaft section, and the jack of the dynamic ring is matched with the fifth shaft section.
The utility model discloses the technological effect that can reach is:
compared with the prior art, the impeller anti-abrasion structure on the water pump of the utility model has the advantages that the fifth shaft section and the shaft hole of the impeller are loosely matched, the impeller is prevented from being separated from the rotating shaft by the fastening nut, the cross section of the fifth shaft section is a closed path formed by three equal-length circular arcs and three equal-length line sections which are connected end to end at intervals, and the three circular arcs are arc sections on the same circle; furthermore, there are mechanical seals to limit the position of the impeller, which can ensure that the impeller is in the correct position; in addition, the step on the fastening nut can ensure that the impeller is always in the correct position.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
fig. 1 is a three-dimensional exploded view of an impeller wear prevention structure of a water pump according to the present invention;
fig. 2 is a sectional view of an impeller abrasion prevention structure of the water pump of the present invention;
fig. 3 is a schematic structural view of a rotating shaft of an impeller abrasion-proof structure on the water pump of the present invention;
fig. 4 is a schematic structural view of the rotating shaft, the impeller and the fastening nut of the impeller anti-wear structure of the water pump of the present invention;
fig. 5 is a cross-sectional view of a fifth shaft section of the rotating shaft of the impeller abrasion prevention structure of the present invention.
Detailed Description
Referring to fig. 1 to 5, the utility model provides an impeller anti-wear structure on water pump, including motor 1, support 2 and pump body 3, motor 1 includes casing 4, stator 5, rotor 6 and connects at the pivot 7 in rotor 6 center, pivot 7 is first shaft segment 8, second shaft segment 9, third shaft segment 10, fourth shaft segment 11, fifth shaft segment 12 and sixth shaft segment 13 from bottom to top in proper order, have formed the step between first shaft segment 8 and second shaft segment 9, between second shaft segment 9 and third shaft segment 10, between third shaft segment 10 and fourth shaft segment 11, between fourth shaft segment 11 and fifth shaft segment 12 and between fifth shaft segment 12 and sixth shaft segment 13; a heat radiation fan 14 is arranged on the first shaft section 8; the second shaft section 9 and the fourth shaft section 11 are respectively provided with a bearing 15, and the bearings 15 are fixed in bearing mounting grooves of the shell 4; the rotor 6 is arranged on the third shaft section 10; the fourth shaft section 11 is also provided with a mechanical seal 16; the cross section of the fifth shaft section 12 is a closed path formed by three equal-length circular arcs 17 and three equal-length line sections 18 which are spaced and connected end to end, and the three circular arcs 17 are arc sections on the same circle; the shape of the shaft hole 20 in the center of the impeller 19 is matched and butted with that of the fifth shaft section 12, and the size of the shaft hole 20 is larger than that of the fifth shaft section 12; the sixth shaft section 13 is provided with an external thread, and a fastening nut 21 is screwed on the sixth shaft section 13; the impeller 19 comprises a wheel disc 25 and a plurality of blades 26 which are uniformly distributed on the periphery of the wheel disc 25 in a circumferential manner, the shaft hole 20 is positioned in the center of the wheel disc 25, a step hole 22 is formed in the outer end of the shaft hole 20, a raised step 23 is formed in the inner end of the fastening nut 21, the outer ring of the raised step 23 is a pressing surface 27 of the fastening nut 21, the raised step 23 is inserted into the step hole 22 in a matched manner, and the pressing surface 27 is pressed on the outer end surface 28 of the wheel disc 25 in a matched manner; the mechanical seal 16 bears at one end against the support 2 and at the other end against the inner end of the impeller 19.
The mechanical seal 16 comprises a static ring and a dynamic ring, the shape of a plug hole 24 of the dynamic ring is consistent with the cross section of the fifth shaft section 12, and the plug hole 24 of the dynamic ring is matched with the fifth shaft section 12.
The utility model discloses an impeller abrasionproof loss structure on water pump, when the assembly, because the external diameter of fifth shaft section 12 is less than the external diameter of 19 shaft holes 20 of impeller, so impeller 19 can assemble with pivot 7 very easily, need not to use tools such as hammer to beat impeller 19, avoid receiving the production of 19 deformation scheduling problems of impeller that beat and lead to, then, use the spanner to twist fastening nut 21 on sixth shaft section 13, because protruding step 23 structure on fastening nut 21 can imbed in impeller 19's stepped hole 22, compact surface 27 supports on the outer terminal surface 28 of rim plate 25, and thus, in fastening nut 21 and pivot 7 fixed connection, also can avoid the possibility of 19 radial movement displacements of impeller, improve impeller 19 mounted position, the accuracy of running position.
The cross section of the fifth shaft section 12 is similar to an equilateral triangle, so that the processing is convenient, the structure is stable, when the impeller 19 is connected and matched with the fifth shaft section 12, the impeller is limited by a plane formed by three equal-length line sections 18, the operation is more stable, and the fifth shaft section 12 is similar to the equilateral triangle structure and has strong abrasion resistance; in addition, the three equal-length arcs 17 and the three equal-length line segments 18 are designed at intervals, so that the shaft hole 20 of the impeller 19 is more conveniently and quickly sleeved into the rotating shaft, and the assembling efficiency is high.
The above detailed description is made on the impeller abrasion-proof structure on the water pump provided by the embodiment of the present invention, and the specific examples are applied herein to explain the principle and the implementation manner of the present invention, and the description of the above embodiments is only used to help understand the technical solution disclosed by the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (2)
1. The utility model provides an impeller abrasionproof on water pump decreases structure, includes motor, support and the pump body, the motor includes casing, stator, rotor and connects the pivot at the rotor center, its characterized in that: the rotating shaft is sequentially provided with a first shaft section, a second shaft section, a third shaft section, a fourth shaft section, a fifth shaft section and a sixth shaft section from bottom to top, and steps are formed between the first shaft section and the second shaft section, between the second shaft section and the third shaft section, between the third shaft section and the fourth shaft section, between the fourth shaft section and the fifth shaft section and between the fifth shaft section and the sixth shaft section; a heat radiation fan is arranged on the first shaft section; the second shaft section and the fourth shaft section are respectively provided with a bearing, and the bearings are fixed in bearing mounting grooves of the shell; the rotor is arranged on the third shaft section; the fourth shaft section is also provided with a mechanical seal; the cross section of the fifth shaft section is a closed path formed by three equal-length circular arcs and three equal-length line sections which are connected end to end at intervals, and the three circular arcs are arc sections on the same circle; the shape of the shaft hole in the center of the impeller is matched and butted with that of the fifth shaft section, and the size of the shaft hole is larger than that of the fifth shaft section; the sixth shaft section is provided with an external thread, and a fastening nut is screwed on the sixth shaft section; the impeller comprises a wheel disc and a plurality of blades which are uniformly distributed on the periphery of the wheel disc in a circumferential manner, the shaft hole is positioned in the center of the wheel disc, a step hole is formed in the outer end of the shaft hole, a raised step is arranged at the inner end of the fastening nut, the outer ring of the raised step is a pressing surface of the fastening nut, the raised step is inserted into the step hole in a matched manner, and the pressing surface is pressed on the outer end surface of the wheel disc in a matched manner; one end of the mechanical seal is abutted against the support, and the other end of the mechanical seal is abutted against the inner end of the impeller.
2. The impeller wear prevention structure on a water pump of claim 1, wherein: the mechanical seal comprises a static ring and a dynamic ring, the shape of the jack of the dynamic ring is consistent with the cross section of the fifth shaft section, and the jack of the dynamic ring is matched with the fifth shaft section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921500720.9U CN210599549U (en) | 2019-09-10 | 2019-09-10 | Impeller anti-abrasion structure on water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921500720.9U CN210599549U (en) | 2019-09-10 | 2019-09-10 | Impeller anti-abrasion structure on water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210599549U true CN210599549U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921500720.9U Active CN210599549U (en) | 2019-09-10 | 2019-09-10 | Impeller anti-abrasion structure on water pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425177A (en) * | 2019-09-10 | 2019-11-08 | 浙江日井泵业股份有限公司 | A kind of impeller anti-wear structure on water pump |
| CN116379002A (en) * | 2023-06-05 | 2023-07-04 | 中国空气动力研究与发展中心空天技术研究所 | Design method of equal-rotation-speed reversing diffuser structure and diffuser structure |
-
2019
- 2019-09-10 CN CN201921500720.9U patent/CN210599549U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425177A (en) * | 2019-09-10 | 2019-11-08 | 浙江日井泵业股份有限公司 | A kind of impeller anti-wear structure on water pump |
| CN116379002A (en) * | 2023-06-05 | 2023-07-04 | 中国空气动力研究与发展中心空天技术研究所 | Design method of equal-rotation-speed reversing diffuser structure and diffuser structure |
| CN116379002B (en) * | 2023-06-05 | 2023-08-11 | 中国空气动力研究与发展中心空天技术研究所 | Design method of equal-rotation-speed reversing diffuser structure and diffuser structure |
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Address after: 318050 No. 41 Middle Road, park, fengjiang street, Luqiao District, Taizhou City, Zhejiang Province (Zhejiang rijing Pump Co., Ltd.) Patentee after: ZHEJIANG RIJING PUMP Co.,Ltd. Address before: 333 Xinliu Road, Xinqiao Town, Luqiao District, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG RIJING PUMP Co.,Ltd. |