CN209537310U - A kind of optical fiber prefabricated rod mandrel sintering furnace - Google Patents
A kind of optical fiber prefabricated rod mandrel sintering furnace Download PDFInfo
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- CN209537310U CN209537310U CN201822153739.2U CN201822153739U CN209537310U CN 209537310 U CN209537310 U CN 209537310U CN 201822153739 U CN201822153739 U CN 201822153739U CN 209537310 U CN209537310 U CN 209537310U
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- insulating layer
- optical fiber
- furnace body
- part insulating
- fiber prefabricated
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Abstract
The utility model discloses a kind of optical fiber prefabricated rod mandrel sintering furnaces, including furnace body, furnace body is internally provided with boiler tube, insulating layer is provided on the outer wall of the boiler tube, the heating component for being heated to furnace body is provided at the insulating layer, the heating component includes heating rod, and the mounting bar being connected with heating rod upper end, the insulating layer includes successively top insulating layer connected vertically, middle part insulating layer and lower part insulating layer, the horizontal breadth a of top insulating layer, with the relationship of a=c > b between the horizontal breadth b of middle part insulating layer and the horizontal breadth c of lower part insulating layer, the heating rod is located at the outside of middle part insulating layer, the length of the heating rod is less than the length of middle part insulating layer, the junction of top insulating layer and middle part insulating layer is provided with the foamed brick for preventing heat preservation fault rupture.The optical fiber prefabricated rod mandrel sintering furnace can be prevented heat preservation fault rupture from collapsing, be prolonged the service life using the insulating layer of special construction and the Position Design of heating component.
Description
Technical field
The utility model relates to sintering furnace technical fields, and in particular to a kind of optical fiber prefabricated rod mandrel sintering furnace.
Background technique
Preform burns the high-sintering process that plug freezing of a furnace is mainly used for optical fiber prefabricated rod mandrel.Preform master
To be applied to optical communication field, be the raw material for manufacturing optical fiber cable, be a kind of new material of high added value high technology content.
With the large-scale application of development especially 4G, 5G of optical communication technique, China increases sharply to the demand of optical fiber cable, at present I
State has been the maximum optical fiber cable producing country in the whole world and has used state, and as the 5G epoch arrive, this demand will sustainable growth.
And preform is the raw material of drawing optical fiber, optical fiber prefabricated rod mandrel is the basic product for making preform.Optical fiber
The sintering temperature of prefabricated rod mandrel is up to 1650 DEG C, and 1580 DEG C of normal temperature, the agglomerating plant of foreign countries' import at present uses
Vacuum graphite sintering technology.
Traditional sintering furnace changes stick inconvenience, and due to structure design defect, the insulating layer of furnace roof is often broken and collapses,
Service life is low, and maintenance cost is high.
Utility model content
The purpose of this utility model is to provide a kind of optical fiber prefabricated rod mandrel sintering furnaces, using the insulating layer of special construction
And the Position Design of heating component, can prevent heat preservation fault rupture from collapsing, prolong the service life, reduce to the maintenance of insulating layer at
This.
To achieve the above object, the utility model provides the following technical solutions: a kind of optical fiber prefabricated rod mandrel sintering furnace, packet
Furnace body is included, the furnace body is internally provided with boiler tube, insulating layer is provided on the outer wall of the boiler tube, on the inner wall of the furnace body
It is provided with insulating layer, the heating component for being heated to furnace body is provided at the insulating layer, which includes adding
Hot pin, and the mounting bar being connected with heating rod one end, the insulating layer include successively top insulating layer connected vertically, in
Portion's insulating layer and lower part insulating layer, the horizontal length a of top insulating layer, the horizontal length b of middle part insulating layer and lower part insulating layer
Horizontal length c between with a=c > b relationship, the heating rod be vertically set on middle part insulating layer outside and not in
Portion's insulating layer is in contact, and the length of the heating rod is less than the length of middle part insulating layer, the company of top insulating layer and middle part insulating layer
The place of connecing is provided with the foamed brick for preventing heat preservation fault rupture, and the mounting bar passes perpendicularly through top insulating layer and foamed brick.
Preferably, it is provided with preset space between the top of the top insulating layer and the top of furnace body, the preset space
For 100mm-150mmm.
Preferably, the mounting bar exceeds top insulating layer top surface.
Preferably, the lower end of the lower part insulating layer is connected with muff.
Preferably, the through-hole for taking out heating component is offered on the furnace body.
As shown from the above technical solution, the utility model has the following beneficial effects:
Three layers of insulating layer connected vertically, and the horizontal breadth of top insulating layer is arranged in the optical fiber prefabricated rod mandrel sintering furnace
A, with the relationship of a=c > b, and heating rod position between the horizontal breadth b of middle part insulating layer and the horizontal breadth c of lower part insulating layer
In the outside of middle part insulating layer, the length of the heating rod is less than the length of middle part insulating layer, top insulating layer and middle part insulating layer
Junction be provided with the foamed brick for preventing heat preservation fault rupture so that insulating layer is not in contact with heating rod, can prevent from adding
Hot pin high temperature coup injury is to insulating layer, the phenomenon that causing insulating layer use for a long time to will appear fracture, while foamed brick heatproof
Height, intensity are big, and not easy to crack and deformation can play top insulating layer fixed and hold insulating layer collapses even if top,
The problem of top insulating layer collapses can be efficiently solved, in addition offers and is coaxially disposed with heating rod and for taking out on furnace body
The through-hole of heating rod, conveniently replaced heating component.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram.
In figure: 1, furnace body；2, insulating layer；201, top insulating layer；202, middle part insulating layer；203, lower part insulating layer；3,
Heating component；301, heating rod；302, mounting bar；4, foamed brick；5, muff；6, through-hole；7, boiler tube.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of optical fiber prefabricated rod mandrel sintering furnace, including furnace body 1, furnace body are internally provided with boiler tube 7, furnace
Body top and bottom are hatch frame, and insulating layer 2 is enclosed on the outer wall at boiler tube 1 from top to bottom 2/3 (at i.e. remaining 1/3
Insulating layer is not enclosed on outer wall), which includes sequentially connected top insulating layer 201, middle part insulating layer from top to bottom
202 and lower part insulating layer 203, the joint face of top insulating layer and middle part insulating layer is horizontally disposed to be had for preventing heat preservation fault rupture
Foamed brick 4, the horizontal breadth c of the horizontal breadth a of top insulating layer, the horizontal breadth b of middle part insulating layer and lower part insulating layer
Between the relationship with a=c > b, the horizontal breadth c of the horizontal breadth a of middle and upper part insulating layer and lower part insulating layer is 350mm,
The horizontal breadth b of middle part insulating layer is 250mm, and top insulating layer is identical with the horizontal length of lower part insulating layer, is fitted in completely
On the outer wall of boiler tube 7, and the horizontal length of middle part insulating layer is less than top, lower part insulating layer, heat aggregation, so that heat insulation effect
More preferably, wherein the material of insulating layer is alumina fibre plate, and heating component includes heating rod 301 and mounting bar 302, wherein heating
Stick is U-shaped Si-Mo rod, and the one end not closed with U-shaped Si-Mo rod of mounting bar 302 is connected, and mounting bar 302 passes through insertion foam
It is fixed between brick and top insulating layer, and mounting bar is more than top insulating layer top surface, and without departing from furnace body, heating rod is located at
The outside of middle part insulating layer is not in contact with middle part insulating layer, while the length of the heating rod is less than the length of middle part insulating layer,
The upper end of heating rod does not contact (because being provided with foamed brick between heating rod and top insulating layer), heating rod with top insulating layer
Around be not in contact with middle part insulating layer, the bottom end of heating rod is not contacted with lower part insulating layer, when can prevent heating rod from heating
High temperature coup injury to insulating layer, the phenomenon that causing insulating layer use for a long time to will appear fracture, additionally, due to top heat preservation
Layer 201 top and furnace body 1 top between be provided with preset space, the preset space be 120mm, facilitate take out mounting bar with
And the heating rod being connected with mounting bar, vacantly (bottom surface of lower part insulating layer is horizontally fixed with for the top surface of top insulating layer at this time
For holding the steel plate of lower part insulating layer), it can crack collapse at high operating temperatures for a long time, top insulating layer and middle part are kept the temperature at this time
The foamed brick of the junction setting of layer, can play top insulating layer fixed and hold when insulating layer collapses on top, can
Efficiently solve the problem of top insulating layer collapses.
The through-hole 6 with heating rod coaxial arrangement is offered on the upper surface of furnace body, can hold mounting bar by through-hole is more than
Then one section of top insulating layer top surface extracts heating component out from through-hole, and new heating component is inserted into out of through-hole
In original position, so that heating component replacement is convenient, the lower end of lower part insulating layer is connected with muff 5, and muff 5 wraps up
On furnace tube outer wall, the horizontal breadth of muff is 60mm, and muff is alumina fibre cotton, because the top and bottom of furnace body are open,
Thermal loss is big, and muff can reduce influence of the ambient temperature to high temperature in burner hearth.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of optical fiber prefabricated rod mandrel sintering furnace, including furnace body (1), the furnace body is internally provided with boiler tube (7), the furnace
It manages and is provided with insulating layer (2) on the outer wall of (7), the heating group for being heated to furnace body is provided at the insulating layer (2)
Part (3), the heating component (3) include heating rod (301), and the mounting bar (302) being connected with heating rod one end, feature
It is, the insulating layer (2) includes successively top insulating layer (201) connected vertically, middle part insulating layer (202) and lower part heat preservation
Layer (203), the horizontal length c of the horizontal length a of top insulating layer, the horizontal length b of middle part insulating layer and lower part insulating layer it
Between with a=c > b relationship, the heating rod (301) be vertically set on middle part insulating layer outside and not with middle part insulating layer
It is in contact, the length of the heating rod (301) is less than the length of middle part insulating layer, the junction of top insulating layer and middle part insulating layer
It is provided with the foamed brick (4) for preventing heat preservation fault rupture, the mounting bar (302) passes perpendicularly through top insulating layer and foam
Brick.
2. a kind of optical fiber prefabricated rod mandrel sintering furnace according to claim 1, it is characterised in that: the top insulating layer
(201) it is provided with preset space between the top at top and furnace body (1), which is 100mm-150mmm.
3. a kind of optical fiber prefabricated rod mandrel sintering furnace according to claim 1, it is characterised in that: the mounting bar (302)
Beyond top insulating layer top surface.
4. a kind of optical fiber prefabricated rod mandrel sintering furnace according to claim 1, it is characterised in that: the lower part insulating layer
(203) lower end is connected with muff (5).
5. a kind of optical fiber prefabricated rod mandrel sintering furnace according to claim 1, it is characterised in that: opened on the furnace body (1)
Equipped with the through-hole (6) for taking out heating component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822153739.2U CN209537310U (en) | 2018-12-21 | 2018-12-21 | A kind of optical fiber prefabricated rod mandrel sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822153739.2U CN209537310U (en) | 2018-12-21 | 2018-12-21 | A kind of optical fiber prefabricated rod mandrel sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209537310U true CN209537310U (en) | 2019-10-25 |
Family
ID=68265143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822153739.2U Active CN209537310U (en) | 2018-12-21 | 2018-12-21 | A kind of optical fiber prefabricated rod mandrel sintering furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209537310U (en) |
-
2018
- 2018-12-21 CN CN201822153739.2U patent/CN209537310U/en active Active
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