CN208252578U - Glass reinforced plastic hermetic seal shaft - Google Patents
Glass reinforced plastic hermetic seal shaft Download PDFInfo
- Publication number
- CN208252578U CN208252578U CN201820512912.0U CN201820512912U CN208252578U CN 208252578 U CN208252578 U CN 208252578U CN 201820512912 U CN201820512912 U CN 201820512912U CN 208252578 U CN208252578 U CN 208252578U
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- CN
- China
- Prior art keywords
- ring
- axle sleeve
- stationary ring
- reinforced plastic
- rotating ring
- 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.)
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Abstract
The utility model discloses a kind of glass reinforced plastic hermetic seal shafts, it includes axle sleeve made of glass reinforced plastic and is arranged in the axle sleeve and stretches out the shaft outside the axle sleeve, it is characterized by: fixed in the shaft be arranged an annular rotating ring and be fluidly arranged a stationary ring, the rotating ring and stationary ring are arranged in the axle sleeve, one spring is set on the axle sleeve, the spring one end is resisted against on the stationary ring to drive the stationary ring to be adjacent to the rotating ring, the rotating ring is towards the side of the stationary ring and/or the stationary ring towards being provided with spiral seal groove on the side of the rotating ring, venthole is begun on the axle sleeve, so that external high pressure gas is to be connected to the seal groove.
Description
Technical field
The utility model belongs to machinery field, and in particular to glass reinforced plastic hermetic seal shaft.
Background technique
Fiberglass blower fan, pump etc. are usually applied to the substance of processing highly corrosive, high pollution.Therefore, close for shaft
The requirement of envelope is very high, needs to accomplish zero leakage.By the way of traditional sealing ring sealing, it is easy in frequent use process
In, the reasons such as sealing material aging, deformation cause sealing effect to substantially reduce, to generate leakage.
Summary of the invention
In order to overcome the above problem, the utility model provides the glass reinforced plastic hermetic seal that a kind of structure is simple, sealing effect is good
Shaft.
The technical solution of the utility model is to provide a kind of glass reinforced plastic hermetic seal shaft comprising axle sleeve made of glass reinforced plastic
And it is arranged in the axle sleeve and stretches out the shaft outside the axle sleeve, it is characterised in that: fixation is arranged a ring in the shaft
The rotating ring of shape and it is fluidly arranged a stationary ring, the rotating ring and stationary ring are arranged in the axle sleeve, are arranged on the axle sleeve
One spring, the spring one end are resisted against on the stationary ring to drive the stationary ring to be adjacent to the rotating ring, and the rotating ring is towards institute
The side for stating stationary ring and/or the stationary ring are towards being provided with spiral seal groove on the side of the rotating ring, on the axle sleeve
Venthole is begun with, so that external high pressure gas is to be connected to the seal groove.
Preferably, the seal groove is arranged on the side wall of the stationary ring, and the connection sealing is provided on the stationary ring
The through-hole of slot, the through-hole are arranged in the outer ring of the seal groove.
Preferably, the seal groove is twist arranged on the rotating ring, and the rotating ring diameter is greater than the stationary ring
Diameter, the part seal groove expose outside the stationary ring.
Preferably, the seal groove is twist arranged on the stationary ring, and the stationary ring diameter is greater than the rotating ring
Diameter, the part seal groove expose outside the rotating ring.
Preferably, the sealing ring covered in the shaft is provided on the axle sleeve.
Preferably, the spring base of a fixed spring is set in the axle sleeve.
The glass reinforced plastic hermetic seal shaft of the utility model forms sealing air film using high pressure gas between rotating ring and stationary ring,
To form lasting sealing effect, after long-time service, generates abrasion and lose sealing effect.
Detailed description of the invention
Fig. 1 is a kind of schematic cross-sectional view of glass reinforced plastic hermetic seal shaft of the utility model preferred embodiment；
Fig. 2 is the front view of the rotating ring of the utility model preferred embodiment.
Specific embodiment
Specific embodiment of the present utility model is described in further detail below.
As depicted in figs. 1 and 2, a kind of glass reinforced plastic hermetic seal shaft 12 of the utility model includes axle sleeve made of glass reinforced plastic
10, shaft 12.Shaft 12 is arranged in axle sleeve 10, and stretches out axle sleeve 10 with the motor (not shown) outside connection.
In order to realize the sealing of shaft 12: the fixed rotating ring 14 for being arranged an annular and to be fluidly arranged one quiet in shaft 12
Ring 16.Rotating ring 14 and stationary ring 16 are arranged in axle sleeve 10, and rotating ring 14 is rotated with shaft 12, and stationary ring 16 is not with 12 turns of shaft
It is dynamic.
One spring base 18 is set in axle sleeve 10, a spring 20 is set on spring base 18,20 one end of spring is resisted against stationary ring 16
On to drive stationary ring 16 to be adjacent to rotating ring 14.Rotating ring 14 is towards the side of stationary ring 16 and/or stationary ring 16 towards on the side of rotating ring 14
It is provided with spiral seal groove 22, begins with venthole 24 on axle sleeve 10, so that external high pressure gas is with communication seals slot 22.
The side of at least one is provided with spiral seal groove 22 i.e. on rotating ring 14 and stationary ring 16, and seal groove 22 is connected to venthole
24, in this way, sealing gas is inwardly moved along dynamic pressure groove by outer, due to dynamic pressure groove cofferdam when being passed through high pressure sealing gas
Throttling action is compressed into the gas in dynamic pressure groove, the pressure rise of gas, under pressure effect, 16 sealed end of stationary ring
Face is open, and the gas of flowing makes to form one layer of very thin air film between rotating ring 14 and stationary ring 16.With rotating ring 14 and stationary ring 16
Gap between seal face increases, and the air pressure between end face reduces, and established air film is destroyed, and seal face gap will at this time
It gradually becomes smaller, when gap is reduced to original situation, along dynamic pressure groove after cofferdam throttles, seal face air pressure rises sealing gas again
Height forms air film from new.Be corrupted to from original air film it is extremely short the time required to establishing new air film so that the medium sealed by
It is just sealed when leaking out, so on circulate.
It, can be in order to realize that seal groove 22 is connected to the external world:
1) seal groove 22 is twist arranged on rotating ring 14, and 14 diameter of rotating ring is greater than the diameter of stationary ring 16, and part seals
Slot 22 exposes outside stationary ring 16.
2) seal groove 22 is twist arranged on stationary ring 16, and 16 diameter of stationary ring is greater than the diameter of rotating ring 14, and part seals
Slot 22 exposes outside rotating ring 14.
3) as illustrated in fig. 1 and 2, seal groove 22 is arranged on the side wall of stationary ring 16, and is provided with the through-hole 28 of perforation with even
Logical seal groove 22 and venthole 24, venthole 24 are arranged in the outer ring of seal groove 22, to form the sealing air-flow of ecto-entad.
Further, the sealing ring 26 covered in shaft 12 is provided on axle sleeve 10, to reinforce sealing effect.
Above embodiments are only the one such embodiment of the utility model, and the description thereof is more specific and detailed, but simultaneously
Therefore it cannot be interpreted as that a limitation on the scope of the patent of the present invention.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this
The protection scope of utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (6)
1. a kind of glass reinforced plastic hermetic seal shaft comprising axle sleeve made of glass reinforced plastic and setting in the axle sleeve and stretch out institute
State the shaft outside axle sleeve, it is characterised in that: it is fixed in the shaft to be arranged an annular rotating ring and be fluidly arranged a stationary ring,
The rotating ring and stationary ring are arranged in the axle sleeve, and a spring is arranged on the axle sleeve, and the spring one end is resisted against described
To drive the stationary ring to be adjacent to the rotating ring, side and/or the stationary ring direction of the rotating ring towards the stationary ring on stationary ring
It is provided with spiral seal groove on the side of the rotating ring, begins with venthole on the axle sleeve, so as to external high pressure gas
To be connected to the seal groove.
2. glass reinforced plastic hermetic seal shaft according to claim 1, it is characterised in that: the seal groove is arranged in the stationary ring
Side wall on, the through-hole for being connected to the seal groove is provided on the stationary ring, the outer ring of the seal groove is arranged in the through-hole
In.
3. glass reinforced plastic hermetic seal shaft according to claim 1, it is characterised in that: the seal groove is twist arranged in
On the rotating ring, the rotating ring diameter is greater than the diameter of the stationary ring, and the part seal groove exposes outside the stationary ring.
4. glass reinforced plastic hermetic seal shaft according to claim 1, it is characterised in that: the seal groove is twist arranged in
On the stationary ring, the stationary ring diameter is greater than the diameter of the rotating ring, and the part seal groove exposes outside the rotating ring.
5. glass reinforced plastic hermetic seal shaft according to claim 1, it is characterised in that: be provided with and covered described on the axle sleeve
Sealing ring in shaft.
6. glass reinforced plastic hermetic seal shaft according to claim 1, it is characterised in that: described in setting one is fixed in the axle sleeve
The spring base of spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820512912.0U CN208252578U (en) | 2018-04-12 | 2018-04-12 | Glass reinforced plastic hermetic seal shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820512912.0U CN208252578U (en) | 2018-04-12 | 2018-04-12 | Glass reinforced plastic hermetic seal shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208252578U true CN208252578U (en) | 2018-12-18 |
Family
ID=64639279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820512912.0U Active CN208252578U (en) | 2018-04-12 | 2018-04-12 | Glass reinforced plastic hermetic seal shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208252578U (en) |
-
2018
- 2018-04-12 CN CN201820512912.0U patent/CN208252578U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |