CN2878380Y

CN2878380Y - Premelting platinum alloy crucible for glass fiber wire-drawing

Info

Publication number: CN2878380Y
Application number: CNU2005200780160U
Authority: CN
Inventors: 刘劲松; 许远方; 李涛; 黄健健
Original assignee: Sinoma Science and Technology Co Ltd
Current assignee: Sinoma Science and Technology Co Ltd
Priority date: 2005-11-29
Filing date: 2005-11-29
Publication date: 2007-03-14
Anticipated expiration: 2015-11-29

Abstract

The utility model relates to a crucible made of platinum alloy used to premelt before glass fibre drawing, which belongs to the field of devices for glass fibre drawing and relates to fabrication of the crucible made of platinum alloy used to melt glass fibre. Comprising a roof, a body and a bottom, the crucible is provided with a charging hole 1 and a hole 2 for testing liquid on the roof, and with a stiffener 3 and a drainage nozzle 4 on the bottom. The utility model is characterized in that the body is divided into an upper and a lower floor, and pair of electrodes 5, 6 and thermocouples 7, 8 is respectively arranged on the side walls of the lower and upper floor. Furthermore, a fire-resistant isolation layer 9 is set up between the lower and upper floor. The power of lower and upper floor can be adjusted conveniently and freely, because pair of electrodes and thermocouples heat and control temperature respectively for the upper and lower floor. The design phase of power distribution for the crucible is greatly simplified and the applicable scopes of process parameters of the crucible are expanded. The crucible provides longer flowing channel for liquid glass, therefore residence time of frit in the crucible is increased. With good homogenising effect, the utility model meets the requirements of melting materials on large capacity and forming the glass fibre with a plurality of holes in rows.

Description

Glass fiber wire-drawing premelting platinum alloy crucible

Technical field

Glass fiber wire-drawing belongs to glass fiber wire-drawing production unit field with premelting platinum alloy crucible, is specifically related to the manufacturing of glass fibre material with the platinum alloy crucible.

Background technology

In the glass fiber wire-drawing production unit, the platinum alloy crucible that molten glass liquid is used is one of most important production unit.It need bear the high temperature of thousands of degree during use, is generally made by expensive platinum rhodium.Under hot conditions, the platinum alloy crucible has fabulous chemical inert, not can with fused glass metal react with; During energising, it is again a good resistance heater, can will place the frit in the pot to be heated to fusion, and glass metal just can make the glass fibre of various compositions behind wire-drawing operation.

For reaching the molding technological condition of glass fibre, frit is in changing material platinum alloy crucible, to finish " fritting " and " homogenizing " two technological processs simultaneously, the temperature requirement difference of these two processes is bigger, therefore, the ideal platinum crucible should be on the vertical direction of crucible, and top-down have rational temperature and increase progressively.Because platinum alloy crucible type of heating is electrically heated, so, when crucible manufactures and designs, just require the platinum alloy crucible to have rational crucible power division.

The used platinum alloy crucible of glass fiber industry is to adjust the electric current distribution of upper and lower layer by the thickness of selecting each component materials of the upper and lower layer of crucible at present, thereby realizes the power division of crucible.For various glass ingredient and processing parameter, all to just can obtain comparatively reasonably data through repeatedly specifically experiment.Obviously, the platinum alloy crucible that produces like this, the property limitation is bigger during use, and the processing parameter setting range is narrow, is difficult to adapt to the needs that glass fibre growing, that composition is different is produced.

Even to this day, still do not have ripe theoretically, light then cause the instability of wire-drawing operation if the crucible power division is improper, heavy then expensive platinum alloy crucible is scrapped fully for the power division of the upper and lower layer of platinum alloy crucible, cause heavy economic losses.

Summary of the invention

Problem at above-mentioned existence, the utility model proposes a kind of glass fiber wire-drawing premelting platinum alloy crucible, it can easily realize the adjustable of upper and lower layer power division, has simplified the power distribution design step of crucible, has improved the processing parameter subject range of crucible.

Technical solution of the present utility model is as follows: it comprises at the bottom of crucible top, crucible body and the crucible, on the crucible top, be provided with charge cavity 1 and liquid measuring window 2, be provided with stiffening web 3 at the bottom of the crucible and let slip a remark 4, it is characterized in that: the crucible status is upper and lower two-layer, pair of electrodes 5,6 and

thermopair

7,8 are respectively arranged,, also be provided with fire-resistant sealing coat 9 between the lower floor on one's body at crucible on the upper and lower two-layer sidewall of crucible body.

On the crucible body, be provided with two " V " shape hot-

plates

10,11 in the sheaf space, be equipped with fluid hole apart from 1/4 place, " V " shape point bottom, second layer hot-plate 11 both sides apart from " V " shape peristome 1/4 place in the first layer hot-plate 10 both sides, also be provided with platinum alloy filter screen 12 in the bottom of layer on one's body at crucible.

In fire-resistant sealing coat 9, also be provided with lower floor's liquid outlet 13.

The glass fiber wire-drawing that adopts the utility model scheme to make premelting platinum alloy crucible, because with the crucible status is upper and lower two-layer, and with two counter electrode and the two pairs of thermopairs respectively to upper and lower layer heat, temperature control, so can make things convenient for, freely regulate the power of the upper and lower layer of crucible, and do not disturb mutually when regulating, simplify the power distribution design step of crucible greatly, and enlarged the subject range of crucible processing parameter.

Crucible is the setting of interior two layers of " V " shape hot-plate of layer on one's body, increased the crucible heating power variable range of layer on one's body, prolonged the time that frit is detained effectively in crucible, make glass metal glide path in crucible long, homo-effect is good, is easier to realize large vol, arranges the change material requirement of multiporous fiber moulding more.

The design of liquid outlet on the fire-resistant sealing coat can prevent the secondary pollution to melten glass liquid of the refractory materials that comes off effectively, and obstruction is let slip a remark, and prolongs the work-ing life of platinum alloy crucible.

Description of drawings

Fig. 1 is the present embodiment structural representation;

Fig. 2 is the side-view of Fig. 1.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

Present embodiment is a glass fiber wire-drawing with 400 hole premelting platinum alloy crucibles.Charge cavity 1 and liquid measuring window 2 are arranged at the top of crucible, stiffening web 3 is arranged and let slip a remark 4 at the bottom of the crucible.

The crucible status is upper and lower two-layer, is provided with two block platinum alloy " V " the shape hot-

plate

10,11 identical with crucible material on the crucible body in the sheaf space.The first layer hot-plate all links to each other with the sidewall of crucible superstructure with " V " shape peristome of second layer hot-plate.Layer top is high together on one's body for " V " shape peristome of the first layer hot-plate and crucible.Second layer hot-plate be positioned at the first layer hot-plate under, parallel with the first layer hot-plate, vertical range is 25mm.

Be equipped with two apart from 1/4 place, " V " shape point bottom, second layer hot-plate 11 both sides apart from " V " shape peristome 1/4 place in the first layer hot-plate 10 both sides and arrange square fluid hole.The square hole of the first layer hot-plate point bottom is of a size of 30 * 30mm, and quantity is 5 of every sides, is symmetrically and evenly to distribute, and between centers is 80mm between two square holes.The square hole of second layer hot-plate " V " shape peristome is of a size of 45 * 45mm, and quantity is 4 of every sides, is symmetrically and evenly to distribute, and between centers is 125mm between two square holes.Melt behind the radiation heating of frit through the first layer hot-plate and crucible wall, flow to second layer hot-plate by the square hole of being located at the first layer hot-plate point bottom.Near the second layer hot-plate glass metal reaches the crucible interior temperature vertex of layer structure on one's body, after glass metal flows to second layer hot-plate from the square hole bottom the first layer hot-plate point, " V " shape plate face along second layer hot-plate rises, when arrival is positioned at the square hole of second layer hot-plate " V " shape peristome, just overflow to crucible on one's body on the filter screen 12 of layer bottom.Glass metal can be removed outside the impurity in the glass metal by filter screen 12 time, filters, cleans the fused glass metal.Simultaneously, filter screen 12 can also play the bubble effect in homogenizing glass metal and the eliminating glass metal.Glass metal by filter screen 12 further homogenizing and filter after, enter in the liquid outlet 13 of fire-resistant sealing coat 9, and enter the leting slip a remark in 4 of crucible bottom thus, enter next procedure.

Crucible on one's body the sidewall of floor be welded with a pair of platinum alloy electrode 5 (10 kilowatts) and a thermopair 7 be housed that (calibration number is S, thermo wires diameter 0.8mm), electrode 5 links to each other with the crucible transformer by electricity-leading device, is crucible layer power supply on one's body, and thermopair 7 can be used for the crucible thermostatic control of layer on one's body.Also be welded with a pair of platinum alloy electrode 6 (6 kilowatts) and a thermopair 8 be housed that (calibration number is S at the sidewall of crucible body lower floor, thermo wires diameter 0.8mm), electrode 6 links to each other with the crucible transformer by electricity-leading device, is the power supply of crucible body lower floor, and thermopair 8 is used for the thermostatic control of crucible body lower floor.

At crucible on one's body, also be provided with fire-resistant sealing coat 9 between the lower floor.The fine and close zirconia block manufacturing of static pressure such as fire-resistant sealing coat 9 employings (model HDZS-69, the south of the Five Ridges, Guangzhou refractory Company is produced) highly is 40mm.Itself has good heat-resistance corrosive nature and higher resistivity.Its existence is not disturbed when upper and lower layer crucible body is switched on mutually.

Be provided with uniformly about in fire-resistant sealing coat 93 lower floor's liquid outlets 13 (diameter is 40-50mm, and two hole between centers are 65-70mm, liquid outlet 13 highly be refractory insulating layer 9 height 1/2).Lower floor's liquid outlet 13 enters the passage of lower floor for the upper strata glass metal.Fire-resistant sealing coat 9 adopts the benefit of liquid outlet structure to be, crucible is in intensification and use, the foil of fire-resistant material and the particle that allow fire-resistant sealing coat 9 and glass metal contact site peel off, be deposited on the crucible understructure top outside the liquid outlet 13, preventing that their from flowing into lets slip a remark 4, making lets slip a remark 4 stops up, thereby has removed the secondary pollution of refractory materials to melten glass liquid effectively, and has prolonged the work-ing life of platinum alloy crucible.

Claims

1, glass fiber wire-drawing premelting platinum crucible, comprise at the bottom of crucible top, crucible body and the crucible, on the crucible top, be provided with charge cavity (1) and liquid measuring window (2), be provided with stiffening web (3) and let slip a remark (4) at the bottom of the crucible, it is characterized in that: the crucible status is upper and lower two-layer, pair of electrodes (5), (6) and thermopair (7), (8) are respectively arranged,, also be provided with fire-resistant sealing coat (9) between the lower floor on one's body at crucible on the upper and lower two-layer sidewall of crucible body.

2, glass fiber wire-drawing according to claim 1 premelting platinum crucible, it is characterized in that: on the crucible body, be provided with " V " shape hot-plate (10), (11) in the sheaf space, 1/4 place, second layer hot-plate (11) both sides in the first layer hot-plate (10) both sides apart from " V " shape point bottom are equipped with fluid hole apart from 1/4 place of " V " shape peristome, also are provided with platinum filter screen (12) in the bottom of layer on one's body at crucible.

3, glass fiber wire-drawing according to claim 1 and 2 premelting platinum crucible is characterized in that: be provided with lower floor's liquid outlet (13) in sealing coat (9).