CN207435311U - For the sealing device of preform drawing stove - Google Patents
For the sealing device of preform drawing stove Download PDFInfo
- Publication number
- CN207435311U CN207435311U CN201721451828.4U CN201721451828U CN207435311U CN 207435311 U CN207435311 U CN 207435311U CN 201721451828 U CN201721451828 U CN 201721451828U CN 207435311 U CN207435311 U CN 207435311U
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- China
- Prior art keywords
- pedestal
- preform
- sealing device
- fluting
- stove
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Abstract
The utility model discloses a kind of sealing devices for preform drawing stove, including pedestal, pedestal capping and flexible graphite sealing ring, wherein, pedestal is fixed on fiber drawing furnace fire door, the short transverse of pedestal is from top to bottom disposed with multiple hollow flutings, one flexible graphite sealing ring is installed to be placed on preform in each fluting, argon gas can be passed through in fluting to carry out air seal, the fluting positioned at the top passes through pedestal lidstock.The utility model proposes the sealing device for preform drawing stove, reduce the requirement to optical fiber prefabricating rod outside diameter uniformity, and improve sealing effect, reduce the proportion of goods damageds of heater element.
Description
Technical field
The utility model is related to optical fiber producing apparatus technical fields more particularly to a kind of for preform drawing stove
Sealing device.
Background technology
Preform drawing stove is a kind of offer excessive temperature（>2000℃）Smelting furnace.Preform is in fiber drawing furnace
In be drawn into filament.Heater element is the workpiece of rigid graphite material in fiber drawing furnace.At high temperature, since graphite can be with
Oxygen reaction is so as to cause heater element scaling loss, so fiber drawing furnace can be full of inert gas to avoid fever in inside when in use
Element.But preform must go out fiber blank to fiber drawing furnace from fiber drawing furnace charging suitable for reading, lower mouth at work, so as to
Cause fiber drawing furnace completely closed, so fiber drawing furnace needs auxiliary sealing device, outside air is avoided to enter in fiber drawing furnace
Scaling loss heater element.
Conventional sealing apparatus is usually using rigid material, by blocking the gap between fiber drawing furnace fire door and preform
Make gap shrinks, while inert gas is constantly passed through into fiber drawing furnace, enter so as to completely cut off outside air in fiber drawing furnace.But tradition
Sealing means are high to optical fiber prefabricating rod outside diameter coherence request, and sealing effect is bad.
Utility model content
The main purpose of the utility model is that provide a kind of sealing device for preform drawing stove, it is intended to carry
Its high sealing effect.
To achieve the above object, the utility model provides a kind of sealing device for preform drawing stove, including
Pedestal, pedestal capping and flexible graphite sealing ring, wherein,
The pedestal is fixed on fiber drawing furnace fire door, and the short transverse of pedestal is from top to bottom disposed with multiple hollow open
Slot is equipped with a flexible graphite sealing ring to be placed on preform in each fluting, argon gas can be passed through in fluting to carry out
Air seal, the fluting positioned at the top pass through pedestal lidstock.
Preferably, its size and shape all same of the fluting on pedestal.
Preferably, it is mounted on being passed through the air inlet pipe and air outlet pipe of argon gas on the side wall of each fluting.
Preferably, the slotted air inlet pipe of institute passes through pipeline connection by pipeline connection, the slotted air outlet pipe of institute.
Preferably, the flexible graphite sealing ring and preform are interference fit.
Preferably, on the pedestal through hole for being used for passing through for preform is equipped between every two fluting.
Preferably, the diameter of the through hole is more than the diameter of flexible graphite sealing ring centre bore.
Preferably, the pedestal capping is detachably connected with pedestal.
Preferably, the flexible graphite sealing ring is positioned in fluting and can be moved with preform in wire drawing.
The utility model proposes the sealing device for preform drawing stove, carried out using flexible graphite sealing ring
Sealing, reduces the requirement to optical fiber prefabricating rod outside diameter uniformity, and improves sealing effect, reduces the loss of heater element
Rate.In addition, this for preform drawing stove sealing device by multilayer can air inlet pedestal carry flexible graphite sealing
Circle, during work on flexible graphite sealing ring package preform, so as to achieve the purpose that completely cut off air.When preform is straight
When footpath changes, flexible graphite sealing ring internal diameter can change therewith, ensure that sealing effect.Meanwhile this draws for preform
The sealing device of silk stove also has the advantages that simple in structure, easy to implement.
Description of the drawings
Fig. 1 is structure diagram of the utility model for the sealing device preferred embodiment of preform drawing stove.
In figure, 1. fiber drawing furnaces；2. pedestal；3. air inlet pipe；4. pedestal 2 covers；5. flexible graphite sealing ring；6. light
Fine prefabricated rods.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
It should be noted that in the description of the utility model, term " transverse direction ", " longitudinal direction ", " on ", " under ", " preceding ",
The orientation or position relationship of the instructions such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on
Orientation shown in the drawings or position relationship, are for only for ease of description the utility model and simplify and describe, and are not instruction or dark
Show that signified device or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the utility model.
With reference to Fig. 1, in this preferred embodiment, a kind of sealing device for preform drawing stove, including pedestal 2,
Pedestal capping 4 and flexible graphite sealing ring 5, wherein,
Pedestal 2 is fixed on 1 fire door of fiber drawing furnace, and the short transverse of pedestal 2 is from top to bottom disposed with multiple hollow open
Slot（In Fig. 1 exemplified by setting 3 layers）, a flexible graphite sealing ring 5 is installed to be placed on preform 6 in each fluting,
Argon gas can be passed through in fluting to carry out air seal, the fluting positioned at the top passes through 4 sealing of pedestal capping.
Specifically, in the present embodiment, fluting its size and shape all same on pedestal 2, so as to facilitate pedestal 2 plus
Work.Pedestal 2 can be made of multiple base units sequentially connected from top to bottom, and each base unit is equipped with a fluting.It is each
It is mounted on being passed through the air inlet pipe 3 and air outlet pipe of argon gas on the side wall of fluting.The slotted air inlet pipe 3 of institute is connected by pipeline
Logical, the slotted air outlet pipe of institute passes through pipeline connection.Flexible graphite sealing ring 5 is interference fit with preform 6.Pedestal seals
Lid 4 is detachably connected with pedestal 2, to facilitate repair.Flexible graphite sealing ring 5, which is positioned in fluting, to exist with preform 6
It is moved during wire drawing.
On pedestal 2 through hole for being used for passing through for preform 6 is equipped between every two fluting.The diameter of through hole is more than flexibility
The diameter of 5 centre bore of carbon seal ring.
Flexible graphite sealing ring 5 has several rules, need to be chosen according to the maximum gauge and minimum diameter of preform 6,
It chooses suitable flexible graphite sealing ring 5 and just can reach optimal seal effect.
For the sealing device of preform drawing stove, its course of work is as follows for this.Preform 6 is put into wire drawing
Before stove 1, by three layers（It is not limited to three layers）Carry flexible graphite sealing ring 5 can the pedestal 2 of air inlet be fixed on fiber drawing furnace 1
Fire door, top layer place pedestal capping 4, are then passed through a certain amount of argon gas from the air inlet pipe 3 of every layer of pedestal 2, afterwards, can beat
Fiber drawing furnace 1 is opened to work.
The sealing device for preform drawing stove that the present embodiment proposes, is carried out using flexible graphite sealing ring 5
Sealing, reduces the requirement to 6 outer diameter uniformity of preform, and improves sealing effect, reduces the damage of heater element
Consumption rate.In addition, this for preform drawing stove sealing device by multilayer can air inlet pedestal 2 carry soft graphite it is close
Seal 5, flexible graphite sealing ring 5 is wrapped up on preform 6 during work, so as to achieve the purpose that completely cut off air.Work as predispersed fiber
During 6 diameter change of stick processed, 5 internal diameter of flexible graphite sealing ring can change therewith, ensure that sealing effect.Meanwhile this is used for optical fiber
The sealing device of prefabricated stick drawn wire stove also has the advantages that simple in structure, easy to implement.
It these are only the preferred embodiment of the utility model, it does not limit the scope of the patent of the present invention, every
It is relevant to be directly or indirectly used in other for equivalent structure transformation made based on the specification and figures of the utility model
Technical field is equally included in the patent within the scope of the utility model.
Claims (9)
1. a kind of sealing device for preform drawing stove, which is characterized in that including pedestal, pedestal capping and flexibility
Carbon seal ring, wherein,
The pedestal is fixed on fiber drawing furnace fire door, and the short transverse of pedestal is from top to bottom disposed with multiple hollow flutings,
One flexible graphite sealing ring is installed to be placed on preform in each fluting, argon gas can be passed through in fluting to carry out gas
Sealing, the fluting positioned at the top pass through pedestal lidstock.
2. the sealing device of preform drawing stove to be used for as described in claim 1, which is characterized in that on the pedestal
It slots its size and shape all same.
3. the sealing device of preform drawing stove to be used for as described in claim 1, which is characterized in that the side of each fluting
It is mounted on being passed through the air inlet pipe and air outlet pipe of argon gas on wall.
4. as described in claim 1 be used for preform drawing stove sealing device, which is characterized in that institute it is slotted into
Tracheae passes through pipeline connection by pipeline connection, the slotted air outlet pipe of institute.
5. the sealing device of preform drawing stove to be used for as described in claim 1, which is characterized in that the soft graphite
Sealing ring is interference fit with preform.
6. the sealing device of preform drawing stove to be used for as described in claim 1, which is characterized in that every on the pedestal
The through hole for being used for passing through for preform is equipped between two flutings.
7. as claimed in claim 6 be used for preform drawing stove sealing device, which is characterized in that the through hole it is straight
Footpath is more than the diameter of flexible graphite sealing ring centre bore.
8. the sealing device of preform drawing stove to be used for as described in claim 1, which is characterized in that the pedestal capping
It is detachably connected with pedestal.
9. being used for the sealing device of preform drawing stove as claimed in any of claims 1 to 8 in one of claims, feature exists
In the flexible graphite sealing ring is positioned in fluting and can be moved with preform in wire drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721451828.4U CN207435311U (en) | 2017-10-31 | 2017-10-31 | For the sealing device of preform drawing stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721451828.4U CN207435311U (en) | 2017-10-31 | 2017-10-31 | For the sealing device of preform drawing stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207435311U true CN207435311U (en) | 2018-06-01 |
Family
ID=62291739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721451828.4U Active CN207435311U (en) | 2017-10-31 | 2017-10-31 | For the sealing device of preform drawing stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207435311U (en) |
-
2017
- 2017-10-31 CN CN201721451828.4U patent/CN207435311U/en active Active
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