CN213575520U - Mechanical seal dustproof structure for small-outer-diameter main shaft - Google Patents
Mechanical seal dustproof structure for small-outer-diameter main shaft Download PDFInfo
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- CN213575520U CN213575520U CN202022101623.1U CN202022101623U CN213575520U CN 213575520 U CN213575520 U CN 213575520U CN 202022101623 U CN202022101623 U CN 202022101623U CN 213575520 U CN213575520 U CN 213575520U
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Abstract
The utility model discloses a mechanical seal dustproof structure for a small-outer-diameter main shaft, which comprises a main shaft, a main shaft arranged on a bearing and a front cover component arranged outside the bearing; the front cover assembly is connected with the lower cover body in a matching way through the upper cover body; is characterized in that the inner hole of the lower cover body is provided with a bearing locking nut in a matching way, the bearing locking nut is in threaded connection with the main shaft, and a gap is arranged between the bearing locking nut and the lower cover body; the outer surface of the bearing locking nut is provided with a left thread. The dustproof spindle has the advantages of simple and compact structure, convenience in processing, convenience in mounting and dismounting, good dustproof effect, prolonged service life of the spindle and reduced use cost; the vertical type high-speed electric spindle with the small outer diameter is suitable for application and popularization.
Description
Technical Field
The utility model relates to a dustproof construction's field especially relates to a small external diameter is mechanical seal dustproof construction for main shaft.
Background
For the situation that the outer diameter of a main shaft is small, a plurality of main shafts work, an air sealing structure is not allowed or cannot be configured, and under the condition of severe working environment, in order to avoid impurities from entering the interior of the main shaft, the dustproof structure adopted in the prior art is mostly dustproof with air sealing or without air sealing and small clearance fit, the situations that liquid inlet, powder inlet and the like are difficult to control cannot be avoided, the service life of the main shaft is greatly reduced, and the maintenance cost is high; therefore, a dustproof structure suitable for the spindle with the small outer diameter needs to be designed.
Disclosure of Invention
The utility model aims at providing a mechanical seal dustproof structure for a small-outer-diameter main shaft, which has simple structure, convenient processing and good dustproof effect; the technical problem is solved.
In order to realize the technical purpose, reach foretell technical requirement, the utility model discloses the technical scheme who adopts is: a mechanical seal dustproof structure for a small-outer-diameter main shaft comprises a main shaft, a main shaft arranged on a bearing and a front cover assembly arranged outside the bearing; the front cover assembly is connected with the lower cover body in a matching way through the upper cover body; the method is characterized in that: the inner hole of the lower cover body is provided with a bearing locking nut in a matching way, the bearing locking nut is in threaded connection with the main shaft, and a gap is formed between the bearing locking nut and the lower cover body; the outer surface of the bearing locking nut is provided with a left thread.
Preferably: the inner hole of the lower cover body is arranged in a step shape, and a slope is arranged at the lower end of the lower cover body.
Preferably: the slope taper is set to be 45 degrees.
Preferably: the outer part of the bearing lock nut is provided with a conical surface parallel to the slope surface of the lower cover body, and an annular groove is arranged above the conical surface.
The utility model has the advantages that; the utility model provides a mechanical seal dustproof construction that little external diameter main shaft was used, compares with traditional structure: through setting up bearing lock nut to be provided with left-handed screw at the nut surface, bearing lock nut cooperation main shaft is rotatory, and left-handed screw has changed the cutting fluid direction, and bearing lock nut outside is provided with the conical surface that parallels with lower lid slope, and left-handed screw cooperates with the conical surface, discharges dust and cutting fluid smoothly, has realized need not the atmoseal structure, reaches better sealed effect. The utility model has simple and compact structure, convenient processing, convenient assembly and disassembly and good dustproof effect, prolongs the service life of the main shaft and reduces the use cost; the vertical type high-speed electric spindle with the small outer diameter is suitable for application and popularization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. a main shaft; 2. a bearing; 3. a front cover assembly; 3-1, an upper cover body; 3-2. a lower cover body; 4. a bearing lock nut; 4-1, conical surface; 4-2, circumferential grooves; 5. a slope surface.
Detailed Description
In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments;
in the attached fig. 1: a mechanical seal dustproof structure for a small-outer-diameter main shaft comprises a main shaft 1, a bearing 2 arranged on the main shaft 1 and a front cover assembly 3 arranged outside the bearing 2; the front cover component 3 is matched and connected with the lower cover component 3-2 through the upper cover component 3-1; a bearing locking nut 4 is arranged in an inner hole of the lower cover body 3-2 in a matched mode, the bearing locking nut 4 is in threaded connection with the main shaft 1, and a gap is formed between the bearing locking nut 4 and the lower cover body 3-2; the bearing locking nut rotates along with the main shaft to generate centrifugal force; discharging the cutting fluid under the action of centrifugal force; the outer surface of the bearing locking nut 4 is provided with a left thread; because the main shaft rotates anticlockwise, the left thread changes the direction of the cutting fluid, and the cutting fluid and dust can be conveniently discharged.
Specifically, the inner hole of the lower cover body 3-2 is arranged in a step shape, and the lower end of the lower cover body is provided with a slope surface 5; the taper of the slope surface 5 is set to be 45 degrees; the outer part of the bearing locking nut 4 is provided with a conical surface 4-1 parallel to the slope surface 5 of the lower cover body, so that cutting fluid and dust are thrown out along the conical surface under the action of centrifugal force, the dust removal efficiency is improved, the dust and liquid are effectively prevented from entering the main shaft, and the service life of the main shaft is obviously prolonged; an annular groove 4-2 is arranged above the conical surface 4-1; the grooves and the steps are matched to form multi-layer protection, and dust entering is reduced.
The utility model has simple and compact structure, convenient processing, convenient assembly and disassembly and good dustproof effect, prolongs the service life of the main shaft and reduces the use cost; the vertical type high-speed electric spindle with the small outer diameter is suitable for application and popularization.
The foregoing examples are given for the purpose of illustrating the present invention in a clear and non-restrictive manner, and it will be apparent to those skilled in the art that variations and modifications of the present invention may be made in other variations and modifications based on the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments, and all such variations and modifications as are obvious and desirable in the art are within the scope of the present invention.
Claims (4)
1. A mechanical seal dustproof structure for a small-outer-diameter main shaft comprises a main shaft (1), a bearing (2) arranged on the main shaft (1) and a front cover assembly (3) arranged outside the bearing (2); the front cover assembly (3) is matched and connected with the lower cover body (3-2) through the upper cover body (3-1); the method is characterized in that: a bearing locking nut (4) is arranged in an inner hole of the lower cover body (3-2) in a matched mode, the bearing locking nut (4) is in threaded connection with the main shaft (1), and a gap is formed between the bearing locking nut (4) and the lower cover body (3-2); the outer surface of the bearing locking nut (4) is provided with a left thread.
2. The mechanical seal dustproof structure for the small-outer-diameter main shaft according to claim 1, characterized in that: the inner hole of the lower cover body (3-2) is arranged to be step-shaped, and a slope surface (5) is arranged at the lower end.
3. The mechanical seal dustproof structure for the small-outer-diameter main shaft according to claim 2, characterized in that: the taper of the slope surface (5) is set to be 45 degrees.
4. The mechanical seal dustproof structure for the small-outer-diameter main shaft according to claim 1, characterized in that: the bearing lock nut (4) is externally provided with a conical surface (4-1) parallel to the slope surface (5) of the lower cover body, and a circumferential groove (4-2) is arranged above the conical surface (4-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022101623.1U CN213575520U (en) | 2020-09-23 | 2020-09-23 | Mechanical seal dustproof structure for small-outer-diameter main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022101623.1U CN213575520U (en) | 2020-09-23 | 2020-09-23 | Mechanical seal dustproof structure for small-outer-diameter main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213575520U true CN213575520U (en) | 2021-06-29 |
Family
ID=76577050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022101623.1U Active CN213575520U (en) | 2020-09-23 | 2020-09-23 | Mechanical seal dustproof structure for small-outer-diameter main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213575520U (en) |
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2020
- 2020-09-23 CN CN202022101623.1U patent/CN213575520U/en active Active
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