CN205806416U - A kind of drive shaft sealing structure - Google Patents
A kind of drive shaft sealing structure Download PDFInfo
- Publication number
- CN205806416U CN205806416U CN201620707082.8U CN201620707082U CN205806416U CN 205806416 U CN205806416 U CN 205806416U CN 201620707082 U CN201620707082 U CN 201620707082U CN 205806416 U CN205806416 U CN 205806416U
- Authority
- CN
- China
- Prior art keywords
- power transmission
- transmission shaft
- forging pipe
- sealing structure
- annular groove
- 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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- Sealing Devices (AREA)
Abstract
The utility model discloses a kind of drive shaft sealing structure, be installed on equipment chassis, including power transmission shaft, forging pipe, the first O, the second O, gland and locating ring, described forging pipe runs through and is welded in described equipment chassis；Described forging pipe has and holds the through hole that described power transmission shaft passes；The described gland described power transmission shaft of appearance is fixed on described forging pipe after passing；The first annular groove accommodating described first O and the second cannelure accommodating described second O is had in the through hole of described forging pipe；Described locating ring is fixed in described first annular groove and holds described power transmission shaft and passes.This utility model efficiently solves that traditional structure sealing effectiveness is poor, the problem of concentricity difference in axle motor process.
Description
Technical field
This utility model relates to the sealing structure of mechanical field.
Background technology
In high-temperature high-pressure crystal growth equipment, it is generally required to by power transmission shaft drive crucible carry out in equipment lifting and
Rotary motion, thus meet the requirement of technique, it is ensured that the solid liquid interface of crystal is in a rational temperature range, to grow
The crystal that dislocation density is little, defect is few.The operating temperature of major part crystal oven is all more than 1000 degree, pressure about 3MPA.?
Under this high-temperature and high-pressure conditions, power transmission shaft needs to rotate and axially-movable, simultaneously need to ensure the gas of device interior
Do not leak.When axle does not moves, carry out sealing between axle and equipment and be easily achieved.But when axle is gone back in motor process
The sealing keeping good between axle to be ensured and equipment is then difficult to accomplish, and owing to axle stretches into device interior high-temperature area
Length is long, and the perpendicularity deviation of the long axis that causes moving is relatively big, is rotating and lifting process axis easily occurs bias, axle with
Easily there is relative wear between chassis, cause the surface of axle to be damaged, affect sealing effectiveness.
Summary of the invention
The purpose of this utility model is to provide a kind of drive shaft sealing structure, efficiently solves traditional structure and seals effect
The problem of concentricity difference in the poorest, axle motor process.
The technical scheme realizing above-mentioned purpose is:
A kind of drive shaft sealing structure, is installed on equipment chassis, including power transmission shaft, forging pipe, the first O, the 2nd O type
Circle, gland and locating ring, wherein,
Described forging pipe runs through and is welded in described equipment chassis；
Described forging pipe has and holds the through hole that described power transmission shaft passes；
The described gland described power transmission shaft of appearance is fixed on described forging pipe after passing；
Have in the through hole of described forging pipe and accommodate the first annular groove of described first O and accommodate described 2nd O
Second cannelure of type circle；
Described locating ring is fixed in described first annular groove and holds described power transmission shaft and passes.
In above-mentioned drive shaft sealing structure, described first annular groove is positioned at described via top；
The counterbore against described first annular groove is had bottom described gland；
Described locating ring includes the boss inserting described first annular groove, and integrally and is positioned at described counterbore with this boss
Interior ring portion.
In above-mentioned drive shaft sealing structure, the gap between described forging pipe and described power transmission shaft is 0.5-0.8mm；
The internal diameter 0.5-0.8mm less than the external diameter of described power transmission shaft of described first O and described second O；
Described locating ring is 0.05-0.1mm with the gap of described power transmission shaft；
The external diameter of described counterbore is 0.05-0.1mm with the gap of described locating ring；
In above-mentioned drive shaft sealing structure, described gland is fixed on described forging pipe by multiple screws.
In above-mentioned drive shaft sealing structure, it is equipped with appearance cooling water inside described equipment chassis and described power transmission shaft and leads to
The hollow layer crossed.
The beneficial effects of the utility model are: this utility model is designed by the structure of advantages of simple, when axle rotating and
Good sealing effectiveness can be played during axially-movable.By being provided with nonmetal locating ring on the top at forging pipe, come countershaft
Carry out circumferentially positioned, prevent from axle rotary course occurs bias, it is to avoid because the bias of axle easily causes axle damage during use
Problem.
Accompanying drawing explanation
Fig. 1 is the structure chart of drive shaft sealing structure of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1, drive shaft sealing structure of the present utility model, including gland 2, multiple screw 3, locating ring 4, first
O the 5, second O 6, power transmission shaft 7 and forging pipe 8.
Forging pipe 8 runs through equipment chassis 1, and is welded in equipment chassis 1.
Forging pipe 8 has and holds the through hole that power transmission shaft 7 passes.Have in the through hole of forging pipe 8 and accommodate the of the first O 5
One cannelure and the second cannelure of receiving the second O 6.
Gap between power transmission shaft 7 and forging pipe 8 is 0.5-0.8mm, the first O 5 and the internal diameter ratio of the second O 6
The little 0.5-0.8mm of external diameter of power transmission shaft 7, makes have initial tension to seal between O and power transmission shaft 7.
Gland 2 holds after power transmission shaft 7 passes, and is fixed on forging pipe 8 by screw 3.First annular groove is positioned at via top,
The counterbore against first annular groove is had bottom gland 2.
Locating ring 4 holds power transmission shaft 7 and passes, including: insert the boss of first annular groove, and integrally and be positioned at this boss
Ring portion in counterbore.Locating ring 4 is 0.05-0.1mm with the gap of power transmission shaft 7, thus ensure power transmission shaft 7 in motor process not
Contact with forging pipe 8, prevent axle to be damaged, affect sealing effectiveness.In the present embodiment, the material of locating ring 4 is mainly isostatic pressed
The non-metallic material such as graphite or rubber wood timber.
The external diameter of counterbore is 0.05-0.1mm with the gap of locating ring 4, and gland 2 is 3-5mm with the gap of power transmission shaft 7, from
And ensure that power transmission shaft 7 does not contacts with gland 2 in motor process.
After locating ring 4 is installed in first annular groove, the first O 5 diametric(al) can be by compression 0.2-0.3mm.
Equipment chassis 1 and internal being equipped with of power transmission shaft 7 hold the hollow layer that cooling water passes through, therefore can be to the first O 5 He
Second O 6 cools down, and prevents it at high temperature to lose efficacy.Power transmission shaft 7 is when doing axial and circumferential motion, at the first O
5 and second O 6 effect under, can be completely separated with the external world by the high temperature and high pressure gas in equipment.Owing to locating ring 4 can be right
The motion of axle is played under the effect of guiding, it is ensured that the when of axle motion, bias does not occur.
Above example is the most for illustration of the utility model, rather than to restriction of the present utility model, relevant technical field
Technical staff, in the case of without departing from spirit and scope of the present utility model, it is also possible to make various conversion or modification, because of
The technical scheme of these all equivalents also should belong to category of the present utility model, should be limited by each claim.
Claims (5)
1. a drive shaft sealing structure, is installed on equipment chassis, it is characterised in that include power transmission shaft, forging pipe, an O type
Circle, the second O, gland and locating ring, wherein,
Described forging pipe runs through and is welded in described equipment chassis；
Described forging pipe has and holds the through hole that described power transmission shaft passes；
The described gland described power transmission shaft of appearance is fixed on described forging pipe after passing；
Have in the through hole of described forging pipe and accommodate the first annular groove of described first O and accommodate described second O
The second cannelure；
Described locating ring is fixed in described first annular groove and holds described power transmission shaft and passes.
Drive shaft sealing structure the most according to claim 1, it is characterised in that described first annular groove is positioned at described through hole
Top；
The counterbore against described first annular groove is had bottom described gland；
Described locating ring includes the boss inserting described first annular groove, and integrally and is positioned at described counterbore with this boss
Ring portion.
Drive shaft sealing structure the most according to claim 2, it is characterised in that between described forging pipe and described power transmission shaft
Gap be 0.5-0.8mm；
The internal diameter 0.5-0.8mm less than the external diameter of described power transmission shaft of described first O and described second O；
Described locating ring is 0.05-0.1mm with the gap of described power transmission shaft；
The external diameter of described counterbore is 0.05-0.1mm with the gap of described locating ring.
Drive shaft sealing structure the most according to claim 1, it is characterised in that described gland is fixed on by multiple screws
On described forging pipe.
Drive shaft sealing structure the most according to claim 1, it is characterised in that in described equipment chassis and described power transmission shaft
Portion is equipped with and holds the hollow layer that cooling water passes through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707082.8U CN205806416U (en) | 2016-07-06 | 2016-07-06 | A kind of drive shaft sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707082.8U CN205806416U (en) | 2016-07-06 | 2016-07-06 | A kind of drive shaft sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205806416U true CN205806416U (en) | 2016-12-14 |
Family
ID=58139814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620707082.8U Expired - Fee Related CN205806416U (en) | 2016-07-06 | 2016-07-06 | A kind of drive shaft sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205806416U (en) |
-
2016
- 2016-07-06 CN CN201620707082.8U patent/CN205806416U/en not_active Expired - Fee Related
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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: 20161214 Termination date: 20210706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |