CN201347401Y

CN201347401Y - Crucible for continuously producing superfine glass fiber

Info

Publication number: CN201347401Y
Application number: CNU2009200376739U
Authority: CN
Inventors: 刘劲松; 许远方; 巩晶晶; 王福平
Original assignee: Sinoma Science and Technology Co Ltd
Current assignee: Sinoma Science and Technology Co Ltd
Priority date: 2009-01-21
Filing date: 2009-01-21
Publication date: 2009-11-18
Anticipated expiration: 2019-01-21

Abstract

The utility model relates a crucible used for continuously producing superfine glass fiber. The crucible is characterized in that two blocks of tabular electricity conducting electrodes are arranged inside the crucible; the tabular electricity conducting electrodes are arranged on both sides inside the crucible along the center line of the crucible; the distance between the bottom part of the tabular electricity conducting electrode and the upper surface of the bottom part of the crucible ranges from 50 mm to 100 mm, and the bottom part of the tabular electricity conducting electrode is obliquely arranged with respect to the bottom part of the crucible; and the distance between the two tabular electricity conducting electrodes is 0.8 to 0.9 times of the length of the crucible. The utility model overcomes the defects of a full platinum crucible, not only meets the requirements of the continuous production of superfine silvalin, but also reduces the investment of the noble metal platinum alloy, thereby greatly reducing the manufacturing cost.

Description

A kind of crucible pot for manufacturing ultra-fine continuous glass fiber

Technical field

The utility model relates to a kind of crucible pot for manufacturing ultra-fine continuous glass fiber, belongs to glass fibre manufacturing technology field.

Background technology

Ultra-fine continuous glass fiber is that single fiber diameter is the thinnest in the glass fiber product series, and its monofilament nominal diameter is 3.5～4 microns.The ultra-fine continuous glass fiber yarn has good folding resistance, flexibility, and intensity height, the fabric made from it has softness, anti tear, folding, excellent properties such as wear-resisting, is particularly suitable for making the fabric of glass for building purposes tunica fibrosa structured material and other special purposes.

Because the base cloth of membrane structure material belongs to thicker Woven glass cloth, to the requirement of ultra-fine continuous glass fiber be: 3.5～4 microns of monofilament nominal diameters, the quantity of the monofilament that per share ultra-fine continuous glass fiber yarn comprises will reach more than 1000.This just requires, and in the production process of ultra-fine continuous glass fiber yarn, must adopt 1000 holes and above bushing, and promptly the linear density of one-time formed glass fiber precursor will reach more than the 30tex (gram/km).

Specifically, because the ultra-fine continuous glass fiber filament diameter is very thin, the bushing that the adopts during production aperture of leting slip a remark is also very little, and the surface tension of glass metal is bigger to glass metal effusive retardation from let slip a remark, and the bushing production of more hole count is adopted in requirement simultaneously, and this retardation is bigger; In addition, if contain small viscosity heterogeneous body or impurity in the glass metal, all can cause the interruption of operation, therefore the melting quality to glass metal requires very high.So the production difficulty of ultra-fine continuous glass fiber yarn is very big.

At present, the method that the production of ultra-fine continuous glass fiber yarn is adopted is to adopt the crucible melting glass that full platinum alloy makes and carry out fiberizing, its shortcoming is: (1) is for guaranteeing glass enough residence time in crucible, the crucible that full platinum alloy is made must reach certain volume, cause the platinum alloy occupancy very big, the input suitability for industrialized production is uneconomical.(2) in same full platinum crucible crucible body, should finish glass fritting and homogenizing simultaneously, keep suitable thermograde again, also to consider to satisfy the moulding requirement of many rounds ultra-fine fibre, assurance crucible baseplate temp also will be considered integrally-built high temperature creep-resisting at last within the mold temperature scope.So the crucible complex structural designs, the difficulty of processing is very big.

Summary of the invention

For solving the above deficiency that existing full platinum alloy crucible exists, the utility model provides a kind of crucible pot for manufacturing ultra-fine continuous glass fiber of new texture.

The utility model adopts following technical scheme:

In crucible, establish two and tabularly draw electric electrode, the aforementioned tabular electrode that draws is arranged in both sides in the crucible along the crucible medullary ray, upper surface 50～the 100mm of its distance from bottom crucible bottom, for being obliquely installed, the distance that the two boards shape draws electrode is 0.8～0.9 times of crucible length with respect to crucible bottom.

Technique scheme further one of improvement is: be provided with in the crucible fluid groove and get fluid cylinder, the area of its cross section is let slip a remark 2～3 times of all endoporus area sums of leting slip a remark of bushing, obtaining uniformly glass metal of temperature, and guarantee to have in the bushing enough glass to flow out.

Two of the further improvement of technique scheme is: the fluid groove biasing of crucible adds the influence that temperature of glass liquid in the fluid groove is gone in fashionable convection current to reduce cold glass sphere.

Technique scheme further improvements three be: the useful volume of crucible is 0.5～1.5 times of load, with assurance glass certain residence time in crucible, carries out the physics homogenizing.

Advantage of the present utility model is:

(1) except that bushing adopted platinum rhodium, the rest part of crucible all adopted refractory materials to build by laying bricks or stones, and the consumption of platinum alloy has reduced more than 60%; And provide a jumbo environment of founding with the crucible that refractory materials is built by laying bricks or stones, and prolonged the residence time of glass metal, make glass metal obtain sufficient homogenizing, improved the quality of glass metal; Simultaneously, by the high quality of selecting to be suitable for the electric smelting heating, the refractory materials of antistripping, greatly reduce the erosion of refractory materials.

(2) crucible and the platinum alloy bushing of building by laying bricks or stones with refractory materials is relatively independent, but independent control is founded parameter, and bushing can change separately after damaging, and does not damage the crucible body.

(3) further avoided the influence of refractory corrosion to the glass metal quality by the fluid groove liquid taking device, simultaneously further homogenizing glass metal makes it to be more suitable for the glass fibre moulding.

Description of drawings

Fig. 1 is the synoptic diagram of an embodiment of the utility model.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Referring to Fig. 1, the utility model adopts refractory materials to build crucible 1 by laying bricks or stones, and the useful volume of crucible 1 is 0.5～1.5 times of its load.The two boards shape that is provided with in the crucible draws electrode 2, adopts rectangle or trapezoidal, by after drawing electrode electric current being introduced glass melt, and can the molten glass ball by melt self as the resistance heating power.Plate electrode 2 is arranged in both sides in the crucible along the crucible medullary ray, the upper surface 50～100mm of brick at the bottom of its distance from bottom crucible, with the angle of end brick vertical line be 15 °～25 °, the distance of two boards electrode is 0.8～0.9 times of crucible length.By this kind layout, can make power line be arranged in the body of heater center, thereby and at low temperature viscous layer that power line is sparse of body of heater wall formation, play the effect of protection pool wall, the erosion of minimizing refractory materials.

Fluid groove 3 of the present utility model is arranged on outside crucible length direction 1/3～1/4 position, its be shaped as rectangle, the size and bushing flow liquid notch be complementary, the degree of depth is 50～80mm.In the centre of fluid groove 3, platinum is set gets fluid cylinder 4, the area in its cross section is let slip a remark 2～3 times of all endoporus area sums of leting slip a remark of bushing, the 30～50mm place of liquid taking port tube 4 nozzle positions more than fluid groove lower bottom part position.

Bushing 5 of the present utility model is arranged on crucible bottom, communicates with getting fluid cylinder, is furnished with leting slip a remark more than 1000 on it, and aperture of leting slip a remark and wire drawing flow are complementary, and length is 3-5mm.

Working process of the present utility model is:

Glass sphere adds and to be fused in the crucible that glass metal is laggard goes into fluid groove, flows into bushing by getting fluid cylinder, again from bushing let slip a remark flow out after, can enter molding device and draw and become ultra-fine continuous glass fiber.

Claims

1, a kind of crucible pot for manufacturing ultra-fine continuous glass fiber, it is characterized in that being provided with in the crucible two tabular electrodes that draw, the aforementioned tabular electrode that draws is arranged in both sides in the crucible along the crucible medullary ray, upper surface 50～the 100mm of its distance from bottom crucible bottom, for being obliquely installed, the distance that the two boards shape draws electrode is 0.8～0.9 times of crucible length with respect to crucible bottom.

2, crucible pot for manufacturing ultra-fine continuous glass fiber according to claim 1 is characterized in that being provided with in the crucible fluid groove and gets fluid cylinder, and the area of its cross section is let slip a remark 2～3 times of all endoporus area sums of leting slip a remark of bushing.

3, as crucible pot for manufacturing ultra-fine continuous glass fiber as described in the claim 2, the height that it is characterized in that getting fluid cylinder is 30～50mm.

4,, it is characterized in that the biasing of crucible fluid groove as crucible pot for manufacturing ultra-fine continuous glass fiber as described in claim 1 or 2 or 3.

5, as crucible pot for manufacturing ultra-fine continuous glass fiber as described in the claim 4, it is characterized in that the crucible fluid groove is located at apart from crucible left end or right-hand member 1/3～1/4 position.

6, as crucible pot for manufacturing ultra-fine continuous glass fiber as described in claim 1 or 2 or 3, the degree of depth that it is characterized in that the crucible fluid groove is 50～80mm.

7, as crucible pot for manufacturing ultra-fine continuous glass fiber as described in claim 1 or 2 or 3, it is characterized in that the tabular angle that draws between electrode and the crucible bottom vertical line is 15 °～25 °.

8, as crucible pot for manufacturing ultra-fine continuous glass fiber as described in claim 1 or 2 or 3, the useful volume that it is characterized in that crucible is 0.5～1.5 times of load.

9, as crucible pot for manufacturing ultra-fine continuous glass fiber as described in claim 1 or 2 or 3, it is characterized in that adopting platinum rhodium makes except that bushing, the rest part of crucible all adopts refractory materials to build by laying bricks or stones.