CN204013021U - A kind of submersible electric motor that improves bearing seal structure - Google Patents
A kind of submersible electric motor that improves bearing seal structure Download PDFInfo
- Publication number
- CN204013021U CN204013021U CN201420320548.XU CN201420320548U CN204013021U CN 204013021 U CN204013021 U CN 204013021U CN 201420320548 U CN201420320548 U CN 201420320548U CN 204013021 U CN204013021 U CN 204013021U
- Authority
- CN
- China
- Prior art keywords
- axle head
- bearing
- end cap
- lid
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Motor Or Generator Frames (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a kind of submersible electric motor that improves bearing seal structure.Comprise stator, rotor and rotating shaft, one end of rotating shaft be non-go out axle head, the other end is output for going out axle head; Non-go out to be provided with successively from the inside to the outside in the rotating shaft of axle head non-go out axle end bearing and non-go out axle head end cap, non-go out axle head end cap outside be also provided with terminal box; The rotating shaft that goes out axle head is provided with out axle head end cap; The non-bearing bore that goes out to be provided with on axle head end cap the peviform circle of a hollow, in it non-go out in the rotating shaft of axle end bearing inner side hot jacket interference fits be provided with successively dynamic bearing lid and oil return lid; Dynamic bearing lid place forms the first annular cavity, and oil return lid place forms the second annular cavity; Make rotating shaft non-go out axle head form labyrinth seal structure, strengthened sealing, while avoiding motor rotation, lubricating grease throws away from the composition surface of upper end cover and dynamic bearing lid, oil return lid, adopt hot jacket interference fits simultaneously, ensured that lubricating grease is closed in bearing chamber, for bearing provides lubricated.
Description
Technical field
The utility model belongs to submersible electric motor technical field, is specifically related to the submersible electric motor that a kind of interior media that is applied to axle, mixed flow immersible electric pump is air.
Background technology
Conventionally, the submersible electric motor that interior media is air is coaxially connected with axle, mixed-flow pump, composition diving axle, mixed flow electric pump, submersible electric motor non-go out axle head with go out axle head and be designed with respectively passive bearing.Bearing adopts grease lubrication structure.Non-go out axle head end cap inside be provided with the columniform bearing chamber of peviform of a hollow, bearing chamber one side right and wrong goes out the peviform cylindrical bottom that axle head end cap is integrally closed, opposite side is because running through mutually and adopt bearing chamber gland with the axle rotating, and the structure (see figure 3) of reinforced seal is housed at the position of matching with rotating shaft.When submersible motor is after long time running, because reinforced seal is stationary components, rotating shaft is rotational parts, mutually produce relative motion, easily cause the sealing surface rubber of reinforced seal to damage, the surface abrasion of corresponding rotating shaft place, makes the driven sealing face leakage of lubricating grease out, once lubricating grease leaks in bearing chamber, easily cause bearing to lack lubricated, the roller dry grinding of bearing, the hurried rising of bearing temperature rise, unit cannot be turned round, have potential safety hazard; Reinforced seal is simultaneously rubber sealing structure, is the standard component of rapid wear, needs periodic replacement.The submersible motor work of diving beneath the water, changes outside framework oil seal and complete machine need be left the water and disassemble, the complicated difficulty of maintain and replace work.
Summary of the invention
In order to solve the problem that in the submersible electric motor bearing chamber of above-mentioned axle, mixed flow immersible electric pump adapted, lubricating grease leaks, the utility model provides a kind of submersible electric motor that improves bearing seal structure.
A kind of submersible electric motor that improves bearing seal structure comprises stator 1, rotor 2 and rotating shaft 3, one end of described rotating shaft 3 be non-go out axle head, the other end is for going out axle head, going out axle head is output; Described non-go out to be provided with successively from the inside to the outside in the rotating shaft 3 of axle head non-go out axle end bearing 5 and non-go out axle head end cap 4, described non-go out axle head end cap 4 outsides be also provided with terminal box 7; Described go out the rotating shaft 3 of axle head be provided with out axle head end cap 6; The described non-bearing bore that goes out to be provided with on axle head end cap 4 the peviform circle of a hollow, in described bearing bore non-go out in the rotating shaft 3 of axle end bearing 5 inner sides hot jacket interference fits be provided with successively dynamic bearing lid 8 and oil return lid 9; Described dynamic bearing lid 8 is ring-type, and cross section is I-shaped, and be positioned at non-go out the cylindrical cavity of axle head end cap 4 ends, the external cylindrical surface of dynamic bearing lid 8 and non-go out the inwall of cylindrical cavity of axle head end cap 4 form narrow first annular cavity between radially; Described oil return lid 9 is circular jar lid shape, and be located at non-go out on the inner of axle head end cap 4; The inner cylinder face at oil return lid 9 edges and non-go out the inner external cylindrical surface of axle head end cap 4 form narrow second annular cavity between radially; In the time that motor moves, rotating shaft 3 is rotated and is driven dynamic bearing lid 8, oil return lid 9 to rotate, make them go out to produce the pressure that points to bearing chamber inner chamber in the cavity of the corresponding narrow ring-shaped cylinder of axle head end cap 4 with non-, hinder in bearing chamber lubricating grease to the resistance of external leakage to form twice, strengthen the sealing effectiveness of bearing chamber, avoided lubricating grease to leak.
The external cylindrical surface of dynamic bearing lid 8 and non-go out radial clearance between the inwall of cylindrical cavity of axle head end cap 4 at 0.5～0.8mm.
On the external cylindrical surface of dynamic bearing lid 8, be processed with T shape screw thread, the direction of rotation of screw thread is that dynamic bearing lid 8 produces the pressure that points to bearing chamber while rotating with rotating shaft.
Oil return Gai Yufei goes out on the joint internal surface of column that axle head end cap 4 coordinates to be processed with two above semicircle ring-type grooves that are arranged in order, and forms labyrinth structure.
The inner cylinder face at oil return lid 9 edges and non-go out axle head end cap 4 inner external cylindrical surface radially between gap be 0.5～0.8mm.
Useful technique effect of the present utility model embodies in the following areas:
1. the utility model is by setting up dynamic bearing lid and oil return lid, make rotating shaft non-go out axle head form labyrinth seal structure, strengthen the sealing at this place, while avoiding motor rotation, lubricating grease throws away from the composition surface of upper end cover and dynamic bearing lid, oil return lid, the composition surface of while and rotating shaft adopts hot jacket interference fits, has ensured that lubricating grease is closed in bearing chamber, for bearing provides lubricated;
Simple in structure, with low cost, be easy to realize and freedom from repairs.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is former dry diving electric motor structure schematic diagram.
Sequence number in upper figure: stator 1, rotor 2, rotating shaft 3, non-go out axle head end cap 4, non-go out axle end bearing 5, go out axle head end cap 6, terminal box 7, dynamic bearing lid 8, oil return lid 9
.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is further described.
Embodiment
Referring to Fig. 1, a kind of submersible electric motor that improves bearing seal structure comprises stator 1, rotor 2 and rotating shaft 3.One end of rotating shaft 3 be non-go out axle head, the other end is for going out axle head, going out axle head is output; Described non-go out to be provided with successively from the inside to the outside in the rotating shaft 3 of axle head non-go out axle end bearing 5 and non-go out axle head end cap 4, described non-go out axle head end cap 4 outsides be also provided with terminal box 7; Described go out the rotating shaft 3 of axle head be provided with out axle head end cap 6.
Referring to Fig. 2, the non-bearing bore that goes out to be provided with on axle head end cap 4 the peviform circle of a hollow, non-in bearing bore goes out by hot jacket interference fits, dynamic bearing lid 8 and oil return lid 9 to be installed successively in the rotating shaft 3 of axle end bearing 5 inner sides.Dynamic bearing lid 8 is ring-type, cross section is I-shaped, and be positioned at non-go out the cylindrical cavity of axle head end cap 4 ends, the external cylindrical surface of dynamic bearing lid 8 and non-go out the inwall of cylindrical cavity of axle head end cap 4 form narrow first annular cavity between radially, the radial clearance between the two is 0.65mm.On the external cylindrical surface of dynamic bearing lid 8, be processed with T shape screw thread, the direction of rotation of screw thread is that dynamic bearing lid 8 produces the pressure that points to bearing chamber while rotating with rotating shaft.Oil return lid 9 is circular jar lid shape, and be located at non-go out on the inner of axle head end cap 4; The inner cylinder face at oil return lid 9 edges and non-go out the inner external cylindrical surface of axle head end cap 4 form narrow second annular cavity between radially, the radial clearance between the two is 0.65mm.Oil return lid 9 goes out to be processed with three semicircle ring-type grooves that are arranged in order on the joint internal surface of column that coordinates of axle head end cap 4 with non-, forms labyrinth structure.
In the time that motor moves, rotating shaft 3 is rotated and is driven dynamic bearing lid 8, oil return lid 9 to rotate, and the first annular cavity and the second annular cavity place produce respectively the pressure of second sensing bearing cavity, make the lubricating grease in bearing chamber be subject to resistance, can not be to external leakage.If lubricating grease is toward external leakage, leakage process hinders the resistance that is subject to twice generation of two seals structure, greatly reduces or has limited the possibility that lubricating grease leaks, and has reached sealing effectiveness, thereby has ensured the lubricated environment of bearing, and unit is run well.
Claims (5)
1. one kind is improved the submersible electric motor of bearing seal structure, comprise stator (1), rotor (2) and rotating shaft (3), one end of described rotating shaft (3) be non-go out axle head, the other end is for going out axle head, going out axle head is output; Described non-go out to be provided with successively from the inside to the outside in the rotating shaft (3) of axle head non-go out axle end bearing (5) and non-go out axle head end cap (4), described non-go out axle head end cap (4) outside be also provided with terminal box (7); Described go out the rotating shaft (3) of axle head be provided with out axle head end cap (6), it is characterized in that: the described non-bearing bore that goes out to be provided with on axle head end cap (4) the peviform circle of a hollow, in described bearing bore non-go out the upper hot jacket interference fits of rotating shaft (3) of axle end bearing (5) inner side be provided with successively dynamic bearing lid (8) and oil return lid (9); Described dynamic bearing lid (8) is ring-type, cross section is I-shaped, and be positioned at non-go out the cylindrical cavity of axle head end cap (4) end, the external cylindrical surface of dynamic bearing lid (8) and non-go out the inwall of cylindrical cavity of axle head end cap (4) form narrow first annular cavity between radially; Described oil return lid (9) is circular jar lid shape, and be located at non-go out on the inner of axle head end cap (4); The inner cylinder face at oil return lid (9) edge and non-go out the inner external cylindrical surface of axle head end cap (4) form narrow second annular cavity between radially; In the time that motor moves, rotating shaft (3) is rotated and is driven dynamic bearing lid (8), oil return lid (9) to rotate, make them go out to produce the pressure that points to bearing chamber inner chamber in the cavity of the corresponding narrow ring-shaped cylinder of axle head end cap (4) with non-, strengthened the sealing effectiveness of bearing chamber.
2. a kind of submersible electric motor that improves bearing seal structure according to claim 1, is characterized in that: the external cylindrical surface of dynamic bearing lid (8) and non-go out radial clearance between the inwall of cylindrical cavity of axle head end cap (4) at 0.5～0.8mm.
3. a kind of submersible electric motor that improves bearing seal structure according to claim 1, is characterized in that: on the external cylindrical surface of dynamic bearing lid (8), be processed with T shape screw thread.
4. a kind of submersible electric motor that improves bearing seal structure according to claim 1, it is characterized in that: oil return lid (9) goes out to be processed with on the joint internal surface of column that coordinates of axle head end cap (4) two above semicircle ring-type grooves that are arranged in order with non-, forms labyrinth structure.
5. a kind of submersible electric motor that improves bearing seal structure according to claim 1, is characterized in that: the inner cylinder face at oil return lid (9) edge and non-go out axle head end cap (4) inner external cylindrical surface radially between gap be 0.5～0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320548.XU CN204013021U (en) | 2014-06-17 | 2014-06-17 | A kind of submersible electric motor that improves bearing seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320548.XU CN204013021U (en) | 2014-06-17 | 2014-06-17 | A kind of submersible electric motor that improves bearing seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204013021U true CN204013021U (en) | 2014-12-10 |
Family
ID=52052960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420320548.XU Expired - Fee Related CN204013021U (en) | 2014-06-17 | 2014-06-17 | A kind of submersible electric motor that improves bearing seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204013021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151099A (en) * | 2016-08-30 | 2016-11-23 | 常州东申泵业有限公司 | There is the submersible axial flow pump of threaded sealing structure |
-
2014
- 2014-06-17 CN CN201420320548.XU patent/CN204013021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151099A (en) * | 2016-08-30 | 2016-11-23 | 常州东申泵业有限公司 | There is the submersible axial flow pump of threaded sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20170617 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |