CN220440465U - Motor rotating shaft dynamic sealing structure - Google Patents
Motor rotating shaft dynamic sealing structure Download PDFInfo
- Publication number
- CN220440465U CN220440465U CN202321867039.4U CN202321867039U CN220440465U CN 220440465 U CN220440465 U CN 220440465U CN 202321867039 U CN202321867039 U CN 202321867039U CN 220440465 U CN220440465 U CN 220440465U
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- Prior art keywords
- sealing
- motor shaft
- sleeved
- sealing ring
- wall surface
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- 238000007789 sealing Methods 0.000 title claims abstract description 116
- 239000004576 sand Substances 0.000 abstract description 15
- 239000004519 grease Substances 0.000 abstract description 10
- 230000001050 lubricating effect Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 13
- 238000001125 extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model belongs to the technical field of motor shaft sealing, and discloses a motor rotating shaft dynamic sealing structure, which comprises a motor shaft, a bearing sealing ring and a bearing, wherein the bearing sealing ring is sleeved on the outer wall surface of the motor shaft, the bearing is sleeved on the outer wall surface of the bearing sealing ring, the outer wall surface of the motor shaft is sleeved with a first sealing structure, and the outer wall surface of the first sealing structure is sleeved with a second sealing structure; through the fixed cover of felt and the cooperation of skeleton sealing washer, form labyrinth shape in the middle and dredge the clearance, centrifugal force when the motor shaft rotates is recycled, can be with the sand dirt along dredging the clearance and discharge to dredge the inslot, finally follow the guiding hole through sand dirt self gravity and discharge, form contact seal through felt sealing washer and motor shaft, can block liquid, further strengthen the leakproofness, solved current motor shaft and moved the sealed non-contact seal that adopts mostly, oil film or lubricating grease when sealed inside like this is consumed after the sealed effect will be discounted greatly, reduce seal life's problem.
Description
Technical Field
The utility model belongs to the technical field of motor shaft sealing, and particularly relates to a motor rotating shaft dynamic sealing structure.
Background
The motor is a device for realizing electric energy conversion or transmission according to an electromagnetic induction law, and generally comprises a shell and an output shaft, wherein the output shaft partially extends out of the shell, a stator and a rotor are arranged in the shell, the rotor is fixedly connected with the output shaft, the rotor rotates relative to the stator under electromagnetic driving, and mechanical energy is output.
However, the existing motor shaft dynamic seal adopts non-contact seal, so that the sealing effect is greatly reduced after the oil film or lubricating grease inside the seal is consumed, and the consumption speed of the lubricating grease is accelerated after the external sand dust contacts the lubricating grease, so that the sealing life is reduced.
Disclosure of Invention
The utility model aims to provide a motor rotating shaft dynamic sealing structure, which solves the problems that the prior motor shaft dynamic sealing is mainly in non-contact sealing, so that the sealing effect is greatly reduced after the oil film or lubricating grease inside the sealing is completely consumed, the consumption speed of the lubricating grease is accelerated after external sand dust is contacted with the lubricating grease, the sealing service life is shortened, and the traditional motor shaft dynamic sealing end cover is connected by a plurality of screws, so that the problems of more connecting points and poor sealing performance are caused.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the motor rotating shaft dynamic sealing structure comprises a motor shaft, a bearing sealing ring and a bearing, wherein the bearing sealing ring is sleeved on the outer wall surface of the motor shaft, the bearing is sleeved on the outer wall surface of the bearing sealing ring, the outer wall surface of the motor shaft is sleeved with a first sealing structure, and the outer wall surface of the first sealing structure is sleeved with a second sealing structure.
Preferably, the first sealing structure includes: the felt sealing ring, the felt fixing sleeve, the framework sealing ring and the oil sealing ring; the felt sealing sleeve is sleeved on the outer wall surface of the motor shaft, the felt fixing sleeve is sleeved on the outer wall surface of the felt sealing ring, the framework sealing sleeve is sleeved on the outer wall surface of the motor shaft, and the oil sealing sleeve is sleeved on the outer wall surface of the felt fixing sleeve.
Preferably, the second sealing structure includes: the motor comprises a motor frame, two locking screws, a sealing cover and two limit screws; the motor frame is sleeved on the outer wall surface of the oil seal ring, the two locking screws penetrate through the motor frame and are connected with the felt fixing sleeve respectively, the felt fixing sleeve is fixed on the motor frame, the sealing cover is arranged on the front end surface of the motor frame, and the two limiting screws penetrate through the sealing cover respectively and are propped against the front end surface of the framework seal ring.
Preferably, a first dustproof groove and three second dustproof grooves are formed between the motor shaft and the framework sealing ring, and a dredging gap and a dredging groove are formed between the felt fixing sleeve and the framework sealing ring.
Preferably, the rear end face of the sealing cover is provided with a threaded connecting sleeve, the rear end face of the sealing cover is provided with a sealing connecting ring, and an end cover sealing ring is arranged between the sealing connecting ring and the motor frame.
Preferably, a guide hole is formed in the lower end face of the motor frame.
Compared with the prior art, the utility model has the beneficial effects that: the utility model relates to a dynamic sealing structure of a motor rotating shaft.
1. According to the utility model, the labyrinth-shaped dredging gap is formed in the motor shaft through the cooperation of the felt fixing sleeve and the framework sealing ring, sand dust can be discharged into the dredging groove along the dredging gap by utilizing the centrifugal force generated when the motor shaft rotates, finally the sand dust is discharged along the guide hole by self gravity, and the contact seal is formed between the felt sealing ring and the motor shaft, so that liquid can be blocked, the tightness is further enhanced, the problem that the conventional motor shaft dynamic seal is mostly sealed in a non-contact manner is solved, so that the sealing effect is greatly reduced after the oil film or lubricating grease in the seal is completely consumed, the consumption speed of the lubricating grease is accelerated after the external sand dust contacts the lubricating grease, and the sealing life is reduced is solved.
2. According to the utility model, the rotary sealing cover is in threaded connection with the quasi-motor frame, so that the rotary sealing cover is quickly connected with the quasi-motor frame, the connection points are reduced, the tightness is enhanced, then the moving position of the framework sealing ring on the motor shaft is limited by the two limiting screws, the too large gap of the dredging gap is prevented, the tightness is further enhanced, and the problems of more connection points and poor tightness caused by the adoption of multi-screw connection at the traditional motor shaft dynamic sealing end cover are solved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a front view of the present utility model;
fig. 3 is a partially enlarged view at a in a schematic cross-sectional view of a front view proposed by the present utility model.
In the figure: 1. a motor shaft; 2. a bearing seal ring; 3. a bearing; 4. a felt seal ring; 5. a felt fixing sleeve; 6. a framework sealing ring; 7. an oil seal ring; 8. a motor frame; 9. a locking screw; 10. sealing cover; 11. a limit screw; 12. a thread connecting sleeve; 13. sealing the connecting ring; 14. a first dust-proof groove; 15. three second dust-proof grooves; 16. dredging the gap; 17. a dredging groove; 18. an end cover sealing ring; 19. and a guide hole.
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.
Referring to fig. 1-3, the present utility model provides a technical solution:
embodiment one:
as can be seen from fig. 1-3 of the specification, the dynamic sealing structure of the motor shaft comprises a motor shaft 1, a bearing sealing ring 2 and a bearing 3, wherein the bearing sealing ring 2 is sleeved on the outer wall surface of the motor shaft 1, the bearing 3 is sleeved on the outer wall surface of the bearing sealing ring 2, the outer wall surface of the motor shaft 1 is sleeved with a first sealing structure, the outer wall surface of the first sealing structure is sleeved with a second sealing structure, a first dustproof slot 14 and three second dustproof slots 15 are formed between the motor shaft 1 and a framework sealing ring 6, and a dredging gap 16 and a dredging slot 17 are formed between a felt fixing sleeve 5 and the framework sealing ring 6.
As can be seen from fig. 1 to 3 of the accompanying drawings, in the specific implementation, the first sealing structure includes: the felt sealing ring 4, the felt fixing sleeve 5, the framework sealing ring 6 and the oil sealing ring 7; the felt sealing ring 4 is sleeved on the outer wall surface of the motor shaft 1, the felt fixing sleeve 5 is sleeved on the outer wall surface of the felt sealing ring 4, the framework sealing ring 6 is sleeved on the outer wall surface of the motor shaft 1, and the oil sealing ring 7 is sleeved on the outer wall surface of the felt fixing sleeve 5.
In this embodiment, the felt fixing sleeve 5 and the framework sealing ring 6 cooperate to form a labyrinth-shaped dredging gap 16 therebetween, and then sand and dust can be discharged into the dredging groove 17 along the dredging gap 16 by utilizing the centrifugal force generated when the motor shaft 1 rotates, and finally discharged along the guiding hole 19 by the gravity of the sand and dust, and the felt sealing ring 4 and the motor shaft 1 form contact seal, so that liquid can be blocked, and the tightness is further enhanced.
Specifically, the operator is to sleeve the bearing seal ring 2 on the motor shaft 1, sleeve the bearing 3 on the bearing seal ring 2, clamp the bearing 3 on the shaft shoulder, then place the felt seal ring 4 in the felt fixing sleeve 5 and sleeve on the motor shaft 1 to contact with the bearing 3, sleeve the oil seal ring 7 on the felt fixing sleeve 5, finally sleeve the skeleton seal ring 6 on the motor shaft 1 and cooperate with the felt fixing sleeve 5, when sand dust enters the first dust-proof groove 14 through the seal cover 10, the seal cover 10 is used as the first seal, when the sand dust quantity in the first dust-proof groove 14 is enough, the sand dust can slide along the motor shaft 1 in a small amplitude when rotating along with the motor shaft 1, guide the sand dust into the dredging gap 16, at this time, enable the dredging gap 16 to continuously shrink and expand to form an extrusion state, under the extrusion of the centrifugal force and the dredging gap 16, the sand dust gradually enters the dredging groove 17, and finally is discharged along the guide hole 19 through the gravity of the sand dust.
Embodiment two:
as can be seen from fig. 1 to 3 of the accompanying drawings, in the specific implementation, the second sealing structure comprises: a motor frame 8, two locking screws 9, a sealing cover 10 and two limit screws 11; the motor frame 8 suit is at the outer wall surface of oil seal 7, two locking screw 9 pass motor frame 8 respectively and felt fixed cover 5 are connected, and fix felt fixed cover 5 on motor frame 8, sealed lid 10 is installed at the preceding terminal surface of motor frame 8, two stop screw 11 pass sealed lid 10 respectively and top at the preceding terminal surface of skeleton sealing washer 6, screw thread adapter sleeve 12 is installed to the rear end face of sealed lid 10, sealing connection ring 13 is installed to the rear end face of sealed lid 10, install end cover sealing washer 18 between sealing connection ring 13 and the motor frame 8, guiding hole 19 has been seted up to the lower terminal surface of motor frame 8.
In this embodiment, through adopting threaded connection with rotary seal lid 10 and quasi-motor frame 8, connect rotary seal lid 10 and quasi-motor frame 8 rapidly, reduce the tie point, strengthen the leakproofness, later restrict the removal position of skeleton sealing washer 6 on motor shaft 1 through two stop screw 11, prevent to dredge clearance 16 clearance too big, further strengthen the leakproofness.
Specifically, after the operator overlaps skeleton sealing washer 6 on motor shaft 1, the operator overlaps motor frame 8 on oil seal ring 7, then screw in two locking screw 9, fix felt fixed cover 5, then the operator holds sealed lid 10, drive and insert sealed connecting ring 13 alignment motor frame 8 front end open constant head tank, afterwards clockwise rotatory sealed lid 10, sealed lid 10 drives threaded connection sleeve 12 and motor frame 8 threaded connection, simultaneously, sealed connecting ring 13 pushes up on end cover sealing washer 18 and further guarantees the leakproofness, at last screw in two stop screw 11 limit the travelling position of skeleton sealing washer 6 on motor shaft 1.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The motor rotating shaft dynamic sealing structure comprises a motor shaft (1), a bearing sealing ring (2) and a bearing (3), and is characterized in that the bearing sealing ring (2) is sleeved on the outer wall surface of the motor shaft (1), the bearing (3) is sleeved on the outer wall surface of the bearing sealing ring (2), a first sealing structure is sleeved on the outer wall surface of the motor shaft (1), and a second sealing structure is sleeved on the outer wall surface of the first sealing structure.
2. The motor shaft dynamic seal structure according to claim 1, wherein the first seal structure includes: a felt sealing ring (4), a felt fixing sleeve (5), a framework sealing ring (6) and an oil sealing ring (7);
the motor is characterized in that the felt sealing ring (4) is sleeved on the outer wall surface of the motor shaft (1), the felt fixing sleeve (5) is sleeved on the outer wall surface of the felt sealing ring (4), the framework sealing ring (6) is sleeved on the outer wall surface of the motor shaft (1), and the oil sealing ring (7) is sleeved on the outer wall surface of the felt fixing sleeve (5).
3. The motor shaft dynamic seal structure according to claim 2, wherein the second seal structure includes: a motor frame (8), two locking screws (9), a sealing cover (10) and two limit screws (11);
the motor frame (8) is sleeved on the outer wall surface of the oil seal ring (7), two locking screws (9) respectively penetrate through the motor frame (8) and are connected with the felt fixing sleeve (5), the felt fixing sleeve (5) is fixed on the motor frame (8), the sealing cover (10) is mounted on the front end surface of the motor frame (8), and two limit screws (11) respectively penetrate through the sealing cover (10) and are propped against the front end surface of the framework sealing ring (6).
4. The motor rotating shaft dynamic sealing structure according to claim 2, wherein a first dustproof groove (14) and three second dustproof grooves (15) are formed between the motor shaft (1) and the framework sealing ring (6), and a dredging gap (16) and a dredging groove (17) are formed between the felt fixing sleeve (5) and the framework sealing ring (6).
5. A motor rotating shaft dynamic seal structure according to claim 3, characterized in that a screw thread connecting sleeve (12) is arranged on the rear end face of the sealing cover (10), a seal connecting ring (13) is arranged on the rear end face of the sealing cover (10), and an end cover sealing ring (18) is arranged between the seal connecting ring (13) and the motor frame (8).
6. A motor shaft dynamic seal structure according to claim 3, wherein the lower end surface of the motor frame (8) is provided with a guide hole (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321867039.4U CN220440465U (en) | 2023-07-17 | 2023-07-17 | Motor rotating shaft dynamic sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321867039.4U CN220440465U (en) | 2023-07-17 | 2023-07-17 | Motor rotating shaft dynamic sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220440465U true CN220440465U (en) | 2024-02-02 |
Family
ID=89687255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321867039.4U Active CN220440465U (en) | 2023-07-17 | 2023-07-17 | Motor rotating shaft dynamic sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220440465U (en) |
-
2023
- 2023-07-17 CN CN202321867039.4U patent/CN220440465U/en active Active
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