CN209385659U - A kind of spindle nose gas curtain seals structure - Google Patents
A kind of spindle nose gas curtain seals structure Download PDFInfo
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- CN209385659U CN209385659U CN201822245857.6U CN201822245857U CN209385659U CN 209385659 U CN209385659 U CN 209385659U CN 201822245857 U CN201822245857 U CN 201822245857U CN 209385659 U CN209385659 U CN 209385659U
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Abstract
The utility model discloses a kind of spindle nose gas curtain seals structures, including main shaft, sleeve and flange, inlet channel is equipped in sleeve, inlet channel includes the air inlet on the outside of sleeve, air guide channel is equipped in flange, inlet channel is connected with air guide channel, flange is equipped with several gas outlets, gas outlet is connect with air guide channel by several airflow channels, it is additionally provided with guide ring and the fixed structure for fixing guide ring, it is additionally provided with front cover, front cover includes the cricoid blocking portion blocked outside gas outlet, guide ring includes portion on the shoulders, air stream outlet is equipped between the medial surface of blocking portion and the portion on the shoulders of guide ring, gas in gas source enters inlet channel by air inlet, it is flowed along cricoid air guide channel, air stream outlet forms equally distributed gas curtain, the opposite face of portion and flange is equipped with clearance portion on the shoulders, and it is formed in clearance portion Second layer gas curtain seals, to improve sealing effect, this utility model is used for machine tool structure field.
Description
Technical field
The utility model relates to machine tool structure fields, more particularly to a kind of spindle nose gas curtain seals structure.
Background technique
Machine tool chief axis, power head are widely used in modern machine processing, and sealing structure generally uses gas curtain seals knot
Structure.Traditional structure is that one of air slot is arranged in matrix, communicates at the outlet of air slot with the gap of spindle nose, connects gas
It behind source, after gas source enters air slot, is discharged by gap, so that gas curtain is formed in spindle nose, to achieve the effect that sealing.
However, existing gas curtain seals structure has the following problems: the gas outlet of air slot only one, close to outlet
The throughput of mouth directly affects sealing so will appear the non-uniform situation of outlet always greater than the throughput far from gas outlet
Effect.
Utility model content
The purpose of this utility model is to provide a kind of spindle nose gas curtain seals knots simple for structure, sealing effect is excellent
Structure.
Technical solution adopted in the utility model is:
A kind of spindle nose gas curtain seals structure, the sleeve being axially sequentially sleeved at including main shaft and along main shaft outside main shaft
And flange, inlet channel is equipped in sleeve, inlet channel includes the air inlet on the outside of sleeve, is equipped in flange around its axis
The air guide channel of line, inlet channel are connected with air guide channel, and flange is equipped with several gas outlets, gas outlet far from the side of sleeve
It is connect with air guide channel by several airflow channels, guide ring is additionally provided between flange and main shaft and for fixing consolidating for guide ring
Determine structure, the side of flange is additionally provided with front cover, and front cover includes the cricoid blocking portion blocked outside gas outlet, and guide ring includes shoulder
Head is equipped with air stream outlet between the medial surface of blocking portion and the portion on the shoulders of guide ring.
Be further used as the improvement of technical solutions of the utility model, air stream outlet is in flared, air stream outlet outwardly one
The diameter of side is greater than the diameter of its other side.
It is further used as the improvement of technical solutions of the utility model, fixed structure includes the locking screw being fixedly linked with main shaft
Mother, guide ring and locking nut are bolted.
It is further used as the improvement of technical solutions of the utility model, the opposite face of portion and flange is equipped with clearance portion on the shoulders.
It is further used as the improvement of technical solutions of the utility model, the outer peripheral surface of flange is equipped with cricoid air slot, air guide
The medial surface of slot and front cover is encircled into air guide channel.
It is further used as the improvement of technical solutions of the utility model, the ratio of the diameter of the diameter and airflow channel of inlet channel
Example is greater than or equal to 2.
The utility model has the beneficial effects that this spindle nose gas curtain seals structure, gas in gas source by air inlet into
Enter inlet channel, then the air guide channel of air injection ring shape, and is flow to pair by each airflow channel for being arranged in flange
The gas outlet answered, then sprayed outward by gas outlet and hit front cover, air stream outlet spray of the last gas between front cover and guide ring
Out and gas curtain is formed, gas curtain is evenly distributed around main shaft, to improve sealing effect.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing:
Fig. 1 is the overall structure diagram of the utility model embodiment；
Fig. 2 is the partial enlarged view of the utility model embodiment；
Fig. 3 is the enlarged view of the flange of the utility model embodiment, guide ring and front cover junction；
Fig. 4 is the main view of the flange of the utility model embodiment；
Fig. 5 is the schematic diagram of internal structure of the flange of the utility model embodiment.
Specific embodiment
Referring to Fig.1~Fig. 5, the utility model are a kind of 1 end gas curtain seals structure of main shaft, including main shaft 1 and along main shaft 1
Axial direction is sequentially sleeved at sleeve 2 and flange 3 outside main shaft 1, and inlet channel 21 is equipped in sleeve 2, and inlet channel 21 includes position
Air inlet 211 in the outside of sleeve 2 is equipped with the air guide channel 31 around its axis, inlet channel 21 and air guide channel in flange 3
31 are connected, and flange 3 is equipped with several gas outlets 32 far from the side of sleeve 2, if gas outlet 32 and air guide channel 31 pass through dry gas
Circulation road 33 connects, and guide ring 4 and the fixed structure for fixing guide ring 4 are additionally provided between flange 3 and main shaft 1, flange 3
Side is additionally provided with front cover 5, and front cover 5 includes blocking the cricoid blocking portion 51 outside gas outlet 32, and guide ring 4 includes portion on the shoulders
41, gap is equipped between the lateral surface in the portion on the shoulders 41 of the medial surface and guide ring 4 of the blocking portion 51 of front cover 5, this gap is
Air stream outlet 6, therefore, air stream outlet 6 are also cricoid.
Specifically, flange 3 is fixedly connected with sleeve 2, and front cover 5 is then fixedly connected with flange 3, and guide ring 4 is then by solid
Determine structure to be mounted on main shaft 1, guide ring 4 can follow main shaft 1 to rotate.Gas is entered in inlet channel 21 by air inlet 211, and
Air guide channel 31 is flow to by inlet channel 21, air guide channel 31 and gas outlet 32 are arranged around the axis of flange 3, therefore air guide
Channel 31 can drain gas, guarantee the uniformity of gas curtain outlet.Gas flow to each gas outlet 32 by airflow channel 33, finally
Gas is sprayed outward by air stream outlet 6 forms gas curtain, forms first layer gas curtain seals.
As the utility model preferred embodiment, air stream outlet 6 is in flared, the side of air stream outlet 6 outwardly
Diameter is greater than the diameter of its other side.When gas is from 32 inflow stream of gas outlet outlet 6, since the diameter of air stream outlet 6 is
Gradually increase outward, therefore the pressure of gas from inside to outside can gradually reduce, and on the one hand gas is gradually discharged, be conducive to
Gas sprays outward, on the other hand can maintain the stability of the air pressure of 6 depths of air stream outlet, guarantee enough air pressures, prevents outer
Boundary's pollutant enters.
As the utility model preferred embodiment, fixed structure includes the locking nut 7 being fixedly linked with main shaft 1,
Specifically, there is key effect to need to guarantee the width of clearance portion 8 when positioning guide ring 4 for the positioning of guide ring 4
Accurately, prevent external object from entering in clearance portion 8 so that the shearing of gas is enough.Guide ring 4 and locking nut 7 are equipped with
The screw hole being mutually matched, and guide ring 4 and locking nut 7 are bolted.
As the utility model preferred embodiment, the opposite face of portion 41 and flange 3 is equipped with clearance portion 8 on the shoulders.Specifically
, clearance portion 8 is cut through close to gas outlet 32, the top of the gas clearance portion 8 of gas curtain seals, due to Venturi effect, in clearance portion 8
Gas have the tendency that moving out, and in clearance portion 8 formed positive pressure " air pressure barrier ", formed second layer gas curtain seals,
Well ensure the leakproofness of main shaft 1.
As the utility model preferred embodiment, the outer peripheral surface of flange 3 is equipped with cricoid air slot 34, air slot 34
Air guide channel 31 is encircled into the medial surface of front cover 5.
As the utility model preferred embodiment, the ratio of the diameter of the diameter and airflow channel 33 of inlet channel 21
More than or equal to 2.When the gas inflow stream channel 33 of inlet channel 21, due to volume variation and form gas boosting,
The air pressure requirement of gas curtain seals can be reduced, the effect of gas boosting is preferably formed.
Certainly, the invention is not limited to above embodiment, and those skilled in the art are without prejudice to originally
Equivalent deformation or replacement can be also made under the premise of utility model spirit, these equivalent deformations or replacement are all contained in the application
In claim limited range.
Claims (6)
1. a kind of spindle nose gas curtain seals structure, it is characterised in that: be axially sequentially sleeved at including main shaft and along main shaft described
Sleeve and flange outside main shaft, are equipped with inlet channel in the sleeve, the inlet channel include on the outside of sleeve into
Port is equipped with the air guide channel around its axis in the flange, and the inlet channel is connected with air guide channel, the flange
Side far from the sleeve is equipped with several gas outlets, and the gas outlet is connect with air guide channel by several airflow channels, institute
It states and is additionally provided with guide ring and the fixed structure for fixing guide ring between flange and main shaft, before the side of the flange is additionally provided with
Lid, front cover include the cricoid blocking portion blocked outside gas outlet, and the guide ring includes portion on the shoulders, the inside of the blocking portion
Air stream outlet is equipped between face and the portion on the shoulders of guide ring.
2. spindle nose gas curtain seals structure according to claim 1, it is characterised in that: air stream outlet is in flared, gas
The diameter of the side of outflux outwardly is greater than the diameter of its other side.
3. spindle nose gas curtain seals structure according to claim 1, it is characterised in that: the fixed structure includes and master
The locking nut that axis is fixedly linked, the guide ring and locking nut are bolted.
4. spindle nose gas curtain seals structure according to claim 1, it is characterised in that: the phase in the portion on the shoulders and flange
Opposite is equipped with clearance portion.
5. spindle nose gas curtain seals structure according to claim 1, it is characterised in that: the outer peripheral surface of the flange is equipped with
The medial surface of cricoid air slot, the air slot and front cover is encircled into the air guide channel.
6. spindle nose gas curtain seals structure according to claim 1, it is characterised in that: the diameter of the inlet channel with
The ratio of the diameter of airflow channel is greater than or equal to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822245857.6U CN209385659U (en) | 2018-12-28 | 2018-12-28 | A kind of spindle nose gas curtain seals structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822245857.6U CN209385659U (en) | 2018-12-28 | 2018-12-28 | A kind of spindle nose gas curtain seals structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209385659U true CN209385659U (en) | 2019-09-13 |
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ID=67862790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822245857.6U Active CN209385659U (en) | 2018-12-28 | 2018-12-28 | A kind of spindle nose gas curtain seals structure |
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| Country | Link |
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| CN (1) | CN209385659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538763A (en) * | 2018-12-28 | 2019-03-29 | 广州市威嘉机床有限公司 | A kind of spindle nose gas curtain seals structure |
-
2018
- 2018-12-28 CN CN201822245857.6U patent/CN209385659U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538763A (en) * | 2018-12-28 | 2019-03-29 | 广州市威嘉机床有限公司 | A kind of spindle nose gas curtain seals structure |
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