CN218633550U - Oil leakage prevention mechanical sealing structure of motor - Google Patents
Oil leakage prevention mechanical sealing structure of motor Download PDFInfo
- Publication number
- CN218633550U CN218633550U CN202222254358.XU CN202222254358U CN218633550U CN 218633550 U CN218633550 U CN 218633550U CN 202222254358 U CN202222254358 U CN 202222254358U CN 218633550 U CN218633550 U CN 218633550U
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- motor
- bearing unit
- transmission flange
- motor body
- labyrinth ring
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Abstract
The utility model discloses a motor oil leakage prevention mechanical sealing structure, which comprises a motor body; the motor comprises a motor body and is characterized in that a circle of groove matching structure is arranged on the matching surface of a bearing unit outer labyrinth ring of the motor body and a transmission flange along the circumferential direction, a plurality of through holes penetrating through two end faces of the transmission flange are uniformly distributed on the inner side of the groove matching structure on the transmission flange along the circumferential direction, and the matching surface gaps of the transmission flange and the bearing unit outer labyrinth ring are communicated with the outside of the motor body through the through holes. The utility model discloses can effectively avoid causing motor inner bearing unit oil leak, oil impregnate because of cooling blower or fan negative pressure influence, and then lead to the unit trouble problem to appear.
Description
Technical Field
The utility model belongs to the technical field of the technique of bearing unit oil lubrication motor and specifically relates to indicate a motor leak protection oil mechanical seal structure.
Background
At present, an oil lubrication motor of a bearing unit adopts active oil injection to lubricate the bearing unit, a cooling fan or a fan is used to circularly ventilate and radiate a cooling medium on an armature part of the motor, the cooling medium is sucked into the motor through the rear end of the motor, and hot air is discharged out of the motor by the cooling fan or the fan. Cooling blower or fan will cause the inside negative pressure zone that forms of motor when convulsions, and bearing unit cavity and outside intercommunication and inside high temperature oil mist form atmospheric pressure simultaneously, and the inside cavity atmospheric pressure of motor is less than outside atmospheric pressure and the inside atmospheric pressure of bearing unit this moment, leads to the inside lubricating oil of bearing unit to have the risk of being inhaled the motor cavity inside, causes oil leak, oil seepage trouble, and then leads to the unit trouble.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a motor leak protection oil mechanical seal structure, can effectively avoid causing motor inside bearing unit oil leak, oil impregnate because of cooling blower or fan negative pressure influence, and then leads to the unit trouble problem to appear.
In order to achieve the above object, the present invention provides a technical solution: an oil leakage prevention mechanical sealing structure of a motor comprises a motor body; the motor comprises a motor body and is characterized in that a circle of groove matching structure is arranged on the matching surface of a bearing unit outer labyrinth ring of the motor body and a transmission flange along the circumferential direction, a plurality of through holes penetrating through two end faces of the transmission flange are uniformly distributed on the inner side of the transmission flange and positioned on the groove matching structure along the circumferential direction, and the matching surface gaps of the transmission flange and the bearing unit outer labyrinth ring are communicated with the outside of the motor body through the through holes.
Furthermore, a plurality of first grooves distributed at unequal intervals are machined on the inner circumferential surface of the bearing unit outer labyrinth ring matched with the spacing ring of the motor body along the axial direction.
Further, the groove matching structure comprises a boss arranged on the outer labyrinth ring of the bearing unit and a second groove arranged on the transmission flange.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
the utility model discloses a seal structure has advantages such as simple structure, processing convenience, leakproofness are good, can effectively avoid causing the oil leak of motor bearing unit because of the negative pressure reason, reduces the unit fault rate, guarantees the long-term steady operation of unit.
Drawings
Fig. 1 is a schematic view of the overall structure of the sealing structure of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a partially enlarged view of fig. 2 at B.
Fig. 4 is a schematic structural diagram of the driving flange of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, but the usage of the present invention is not limited thereto.
As shown in fig. 1 to 4, the oil leakage preventing mechanical sealing structure of the motor according to the present embodiment includes a motor body 1, and a transmission flange 101 and a spacer ring 102 of the motor body 1 are both rotating components and rotate together with a rotating shaft. When cooling fan or fan is used for carrying out air draft heat dissipation on the inside of the motor, the inside and the outside of the motor are separated through the shell 103 of the motor body 1, hot air is exhausted out of the motor through the air draft opening 107 in the shell 103, and at the moment, the air pressure in the motor is lower than the outside air pressure, so that a negative pressure area is formed in the motor. According to the embodiment, a circle of groove matching structure 105 is added on the matching surface of the outer labyrinth ring 104 of the bearing unit of the motor body 1 and the transmission flange 101 along the circumferential direction to form air pressure labyrinth seal, meanwhile, a plurality of through holes 106 are uniformly processed on the transmission flange 101 and near the inner side of the groove matching structure 105 along the circumferential direction, each through hole 106 penetrates through two end faces of the transmission flange 101, the matching surface gap of the outer labyrinth ring 104 of the transmission flange 101 and the bearing unit is communicated with the outside of the motor body 1 through the through holes 106, if the sealing structure at the groove matching structure 105 is insufficient to achieve the sealing effect, as the through holes 106 uniformly distributed along the circumference are communicated with the outside of the motor, an air plug is formed through the rotation of the through holes 106, and therefore, a secondary negative pressure prevention function is achieved for a formed negative pressure area.
In order to further form air pressure isolation between the interior of the bearing unit and the interior cavity of the motor, a plurality of first grooves 107 distributed at unequal intervals can be axially processed on the inner circumferential surface of the outer labyrinth ring 104 of the bearing unit, which is matched with the spacing ring 102, so as to form low pressure isolation.
Specifically, the groove fitting structure 105 includes a boss provided on the bearing unit outer labyrinth ring 104 and a second groove provided on the transmission flange 101.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. An oil leakage prevention mechanical sealing structure of a motor comprises a motor body; the method is characterized in that: the motor comprises a motor body and is characterized in that a circle of groove matching structure is arranged on the matching surface of a bearing unit outer labyrinth ring of the motor body and a transmission flange along the circumferential direction, a plurality of through holes penetrating through two end faces of the transmission flange are uniformly distributed on the inner side of the groove matching structure on the transmission flange along the circumferential direction, and the matching surface gaps of the transmission flange and the bearing unit outer labyrinth ring are communicated with the outside of the motor body through the through holes.
2. The mechanical seal structure of claim 1, characterized in that: a plurality of first grooves distributed at unequal intervals are machined in the axial direction on the inner circumferential surface of the bearing unit outer labyrinth ring matched with the spacing ring of the motor body.
3. The mechanical seal structure of claim 1, characterized in that: the groove matching structure comprises a boss arranged on the labyrinth ring outside the bearing unit and a second groove arranged on the transmission flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222254358.XU CN218633550U (en) | 2022-08-26 | 2022-08-26 | Oil leakage prevention mechanical sealing structure of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222254358.XU CN218633550U (en) | 2022-08-26 | 2022-08-26 | Oil leakage prevention mechanical sealing structure of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218633550U true CN218633550U (en) | 2023-03-14 |
Family
ID=85463850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222254358.XU Active CN218633550U (en) | 2022-08-26 | 2022-08-26 | Oil leakage prevention mechanical sealing structure of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218633550U (en) |
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2022
- 2022-08-26 CN CN202222254358.XU patent/CN218633550U/en active Active
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