CN214008079U - Waterproof sealing device for spindle box of vertical machine tool - Google Patents
Waterproof sealing device for spindle box of vertical machine tool Download PDFInfo
- Publication number
- CN214008079U CN214008079U CN202022610862.XU CN202022610862U CN214008079U CN 214008079 U CN214008079 U CN 214008079U CN 202022610862 U CN202022610862 U CN 202022610862U CN 214008079 U CN214008079 U CN 214008079U
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- sealing
- ring
- rotating shaft
- machine tool
- spindle box
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a vertical lathe headstock waterproof sealing device, including rotation axis and seal cushion, the seal cover has been cup jointed to the outside of rotation axis, the below that the outside of rotation axis is located the seal cover has cup jointed first ring, the angle such as inside of first ring is provided with a plurality of first balls, the intermediate position department that does not have two first balls is provided with expansion bolts, I-shaped seal ring has been cup jointed to the outside of first ring. The utility model discloses in, the junction of i-shaped seal ring and rotation axis is provided with first ring, and the angle such as inside of first ring is provided with a plurality of first balls, and is provided with expansion bolts between per two first balls, truns into rolling friction with the sliding friction between rotation axis and the i-shaped seal ring, can reduce the rotation axis when rotating with i-shaped seal ring's frictional force, can guarantee sealed effect again.
Description
Technical Field
The utility model relates to a sealing device technical field especially relates to a vertical lathe headstock water seal device.
Background
When the rotating shaft needs to be sealed, a dynamic sealing surface is necessarily involved, magnetic fluid sealing is a novel sealing technology developed in the 70 s, the sealing structure is relatively simple and comprises a permanent magnet, a magnetic pole, a magnetic circuit, magnetic liquid, a rotating shaft and the like, a gap between the magnetic pole and the rotating shaft is a sealing gap, the magnetic liquid is filled in the sealing gap, and the sealing principle is that the permanent magnet generates a strong magnetic field in the sealing gap to tightly attract the magnetic fluid so as to seal a leakage channel to achieve the purpose of sealing.
However, the existing sealing device for the spindle box of the machine tool still has certain defects in use, when the sealing device is used, a mechanical sealing layer is abraded in the rotating process of a rotating shaft, so that the sealing effect is poor, and the pressure resistance of a magnetic fluid sealing layer is reduced due to the increase of temperature, so that the sealing effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a waterproof sealing device for a spindle box of a vertical machine tool.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a waterproof sealing device for a spindle box of a vertical machine tool comprises a rotating shaft and a sealing cushion layer, wherein a sealing sleeve is sleeved outside the rotating shaft, a first circular ring is sleeved outside the rotating shaft below the sealing sleeve, a plurality of first balls are arranged inside the first circular ring at equal angles, an expansion bolt is arranged at the middle position of every two first balls, an I-shaped sealing washer is sleeved outside the first ring, a second ring is fixed on the inner side of the I-shaped sealing washer, a plurality of second balls are arranged in the second circular ring at equal angles, a main shaft box shell is arranged outside the rotating shaft, the spindle box comprises a spindle box shell, a rotating shaft, a magnetic fluid sealing layer, a sealing cushion layer and a radiating fin, wherein the magnetic fluid sealing layer is arranged outside the rotating shaft and inside the spindle box shell, the sealing cushion layer is arranged on the inner surface wall of the spindle box shell and outside the magnetic fluid sealing layer, and the radiating fin is arranged on one side of the sealing cushion layer.
As a further description of the above technical solution:
the seal sleeve is of a sawtooth structure.
As a further description of the above technical solution:
the vertical central line of the rotating shaft and the vertical central line of the first circular ring are positioned on the same straight line.
As a further description of the above technical solution:
the vertical center line of the first circular ring and the vertical center line of the second circular ring are positioned on the same straight line.
As a further description of the above technical solution:
the inner height of the I-shaped sealing washer is equal to the thickness of the shell of the main shaft box.
In the utility model, firstly, the connection part of the I-shaped sealing washer and the rotating shaft is provided with a first circular ring, a plurality of first balls are arranged in the first circular ring at equal angles, an expansion bolt is arranged between every two first balls, the sliding friction between the rotating shaft and the I-shaped sealing washer is converted into rolling friction, the friction force between the rotating shaft and the I-shaped sealing washer when the rotating shaft rotates can be reduced, and the sealing effect can be ensured, secondly, a sealing sleeve is sleeved outside the rotating shaft, a sealing cushion layer is arranged outside the magnetic fluid sealing layer, the double sealing effect can be achieved, the sealing performance of the device is ensured, and a radiating fin is arranged on one side of the sealing cushion layer, the temperature around the magnetic fluid sealing layer can be reduced, the sealing effect ensured as far as possible is not influenced by the temperature, the normal work of the magnetic fluid sealing layer is ensured, and finally, the inside of the sealing sleeve is filled with liquid or gas with the sealing effect, and the sealing sleeve is of a sawtooth structure, so that the resistance of air in the rotating process can be reduced, and a better sealing effect is achieved.
Drawings
Fig. 1 is a schematic structural view of a waterproof sealing device for a spindle box of a vertical machine tool provided by the present invention;
fig. 2 is a schematic structural view of a ring of the waterproof sealing device for the spindle box of the vertical machine tool provided by the utility model;
fig. 3 is the utility model provides a vertical machine tool headstock waterproof sealing device's inside cross-sectional view.
Illustration of the drawings:
1-rotating shaft, 2-sealing sleeve, 3-first ring, 4-main shaft box shell, 5-radiating fin, 6-sealing cushion layer, 7-magnetic fluid sealing layer, 8-expansion bolt, 9-first ball, 10-second ball, 11-second ring and 12-I-shaped sealing washer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, a waterproof sealing device for a spindle box of a vertical machine tool comprises a rotating shaft 1 and a sealing cushion layer 6, wherein a sealing sleeve 2 is sleeved outside the rotating shaft 1, a first circular ring 3 is sleeved below the sealing sleeve 2 outside the rotating shaft 1, a plurality of first balls 9 are arranged inside the first circular ring 3 at equal angles, an expansion bolt 8 is arranged at the middle position of every two first balls 9, an I-shaped sealing washer 12 is sleeved outside the first circular ring 3, a second circular ring 11 is fixed on the inner side of the I-shaped sealing washer, a plurality of second balls 10 are arranged inside the second circular ring 11 at equal angles, a spindle box shell 4 is arranged outside the rotating shaft 1, a magnetic fluid sealing layer 7 is arranged inside the spindle box shell 4 outside the rotating shaft 1, a sealing cushion layer 6 is arranged outside the magnetic fluid sealing layer 7 on the inner surface wall of the spindle box shell 4, the gasket 6 is provided at one side thereof with a heat sink 5.
The sealing sleeve 2 is of a sawtooth structure, the vertical central line of the rotating shaft 1 and the vertical central line of the first circular ring 3 are located on the same straight line, the vertical central line of the first circular ring 3 and the vertical central line of the second circular ring 11 are located on the same straight line, and the inner height of the I-shaped sealing washer 12 is equal to the thickness of the spindle box shell 4.
Expansion bolts 8 are arranged between every two first balls 9 and every two second balls 10 which are arranged inside the first circular ring 3 and the second circular ring 11, and the sealing performance of the device is guaranteed.
The working principle is as follows: during the use, the magnetic fluid sealing layer 7 arranged in the spindle box shell 4 plays a role in sealing in the rotating process of the rotating shaft 1, the sealing cushion layer 6 plays a role in mechanical sealing, meanwhile, the heat radiating fins 5 can reduce the temperature around the magnetic fluid sealing layer 7 and guarantee the sealing effect of the magnetic fluid sealing layer 7, the sealing sleeve 2 is sleeved outside the spindle box shell 4, the connecting part of the rotating shaft 1 and the spindle box shell 4 is connected through the first circular ring 3 and the second circular ring 11, the friction force of the rotating shaft 1 in the rotating process can be reduced, and the sealing performance of the connecting part can be guaranteed as far as possible through the design of the I-shaped sealing washer 12.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. A waterproof sealing device for a spindle box of a vertical machine tool comprises a rotating shaft (1) and a sealing cushion layer (6), and is characterized in that a sealing sleeve (2) is sleeved outside the rotating shaft (1), a first ring (3) is sleeved below the sealing sleeve (2) outside the rotating shaft (1), a plurality of first balls (9) are arranged inside the first ring (3) in an equiangular mode, an expansion bolt (8) is arranged at the middle position of every two first balls (9), an I-shaped sealing washer (12) is sleeved outside the first ring (3), a second ring (11) is fixed on the inner side of the I-shaped sealing washer, a plurality of second balls (10) are arranged inside the second ring (11) in an equiangular mode, a spindle box shell (4) is arranged outside the rotating shaft (1), and a magnetic fluid sealing layer (7) is arranged inside the spindle box shell (4) outside the rotating shaft (1), and a sealing cushion layer (6) is arranged on the inner surface wall of the main shaft box shell (4) and positioned outside the magnetic fluid sealing layer (7), and a radiating fin (5) is arranged on one side of the sealing cushion layer (6).
2. The vertical machine tool spindle box waterproof sealing device is characterized in that the sealing sleeve (2) is of a sawtooth structure.
3. The vertical machine tool headstock waterproof sealing device according to claim 1, wherein the vertical center line of the rotating shaft (1) and the vertical center line of the first ring (3) are located on the same straight line.
4. The vertical machine tool headstock waterproof sealing device according to claim 1, wherein the vertical center line of the first ring (3) and the vertical center line of the second ring (11) are located on the same straight line.
5. The vertical machine tool headstock waterproof sealing device according to claim 1, wherein the inner height of the I-shaped sealing gasket (12) is equal to the thickness of the headstock housing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022610862.XU CN214008079U (en) | 2020-11-12 | 2020-11-12 | Waterproof sealing device for spindle box of vertical machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022610862.XU CN214008079U (en) | 2020-11-12 | 2020-11-12 | Waterproof sealing device for spindle box of vertical machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214008079U true CN214008079U (en) | 2021-08-20 |
Family
ID=77304333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022610862.XU Active CN214008079U (en) | 2020-11-12 | 2020-11-12 | Waterproof sealing device for spindle box of vertical machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214008079U (en) |
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2020
- 2020-11-12 CN CN202022610862.XU patent/CN214008079U/en active Active
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