JPS60131831A - Starting material feeder for furnace for continuously melting glass - Google Patents

Abstract

PURPOSE:To prevent the clogging of the starting material feeding inlet of a furnace with softened starting materials by carrying out control so that the tip of a piston in a piston sliding guide is stopped at a position corresponding to the outside of an upper side wall connected to the ceiling of the furnace. CONSTITUTION:A piston sliding guide 4 contg. a piston 3 is attached to the starting material feeding inlet 6 of a furnace, and a guide pipe 5 for a starting material feeding hopper is connected to the guide 4 at a position just before the position at which the piston 3 is farthest from the inlet 6. The tip of the piston 3 reaches a position corresponding to the outside 2' of an upper side wall 2 connected to the ceiling of the furnace when the piston 3 is maximumly pushed toward the inlet 6. As a result, a part close to the inlet 6 is filled with starting materials to prevent the superheating of the tips of the pipe 5 and the piston 3 due to the transfer of heat from the inside of the furnace. An edge of the wall 2 is inclined at 45 deg. angle alpha so that the inlet 6 is widened, so force applied to the piston 3 is relieved. The tip of the piston 3 is made sawtoot 7 so as to feed starting materials into the furnace while chipping them, so force applied to the piston 3 is further relieved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a continuous glass melting furnace raw material supply device.

Conventional configuration and its problems The raw material supply method for continuous glass melting is a vibrator.
Moving feed of raw materials, with flat ends.

In addition, there are methods such as pushing the raw material with a piston with a large area and moving and supplying the raw material by rotating a spiral screw installed in a cylinder, but all of these methods lack accuracy in the amount of raw material supplied, and it is difficult to feed the raw material in one furnace. There is a drawback that raw materials solidified in a "glutinous" shape due to the heat of the furnace accumulate near the mouth, frequently causing clogging. This phenomenon is particularly likely to occur in small continuous glass melting furnaces. Continuous glass melting furnaces generally adopt a method in which molten glass flows out from the outlet of the furnace in an overflow state in response to the amount of raw material supplied, so the supply amount may fluctuate due to causes such as clogging of the supplied raw material. When this occurs, the flow of eluted glass pulsates accordingly, and when the flow rate decreases, the outflow glass solidifies, clogging the outflow port and affecting the quality of the glass.

Purpose of the Invention The present invention provides a method for melting glass using a continuous glass melting furnace.
This invention relates to a raw material supply device that can always accurately supply raw material supplies V without generating them.

Structure of the Invention The present invention provides a piston sliding kite with a built-in piston in the raw material supply port formed by the furnace bottom part and the furnace ceiling eave part, and the piston is installed in the piston sliding kite at the deepest position from the raw material supply port of the furnace. A material supply hopper kite tube is installed just before the piston is retracted into the furnace.This piston is set so that when it is pushed out the most, its tip 1'ifa is at the 11th point corresponding to the outer wall surface of the furnace ceiling eaves. The end face of the raw material supply port in the ceiling eaves and ceiling is slanted in the direction of opening into the furnace, making it possible to easily supply raw materials into the furnace while avoiding the effects of heat in the furnace, and also preventing the furnace ceiling from being affected. The end surface of the raw material supply port of the eave part is inclined M toward the inside of the furnace, so that the force required for supplying and moving the material can be reduced. do. 1st
In the figure, a piston sliding kite 4 containing a flat piston 3 is inserted horizontally into a raw material supply port 6 formed by a furnace bottom 1 and a furnace ceiling eave 2 of a melting furnace. This piston sliding guide 4 is provided with a raw material supply hopper kite cylinder 5 that is vertically positioned just before the piston 3 is pulled in to the innermost position from the raw material supply port 6 of the furnace, so that the piston 3 is pushed out the furthest position. When the supply of the raw material is blocked by the Δ←flat portion of the piston 3, the tip of the piston 3 moves to a position 1 corresponding to the outer wall surface 2' of the furnace ceiling eave portion 2.

At this time, the raw material supplied from the raw material supply hopper tube 5 is pushed into the furnace, and the piston 3 first returns to its original position. By continuing to repeat this operation, the raw material falling vertically below the raw material supply water flange guide tube 6 in a portion corresponding to the thickness and width of the piston 3 can be pushed into the furnace with constant agility and accuracy with each stroke of the piston 3. I can do it. The reason why the piston 3 is moved only to the position corresponding to the outer wall surface of the furnace ceiling eave part 2 as described above is that the raw material supply port 6 is blocked with another material, and the raw material supply hopper kite tube is prevented by the movement of heat from inside the furnace. This is to prevent the tip of the piston 3 from being overheated by 1 τμ, and to avoid deposition due to softening of the supplied raw material. The raw material pushed into the furnace by the piston 3 gradually moves into Z due to the movement of the piston 3 pushing the next raw material, but this movement is made smooth and the force applied to the piston 3 is reduced. In order to do this, the end face of the furnace ceiling eave part 2 is formed to be inclined at an angle α-46° in the direction of opening into the furnace. Furthermore, the tip f111 of the piston 3 is the second
As shown in the figure, saw-blade-like unevenness 7 is formed when viewed from the top.

The effect of the tip shape of the piston 3 is that the piston sliding guide 4
It is possible to feed the raw material into the furnace while scraping the raw material adhering to the piston 1 each time the piston is pushed out, reducing the load applied to the piston 3, and reducing the movement of the raw material already pushed into the furnace by the piston 3. This can be easily done by pressing with the sharp edge of the Note that the piston 3 is driven using the rotational movement of a motor.

Effects of the Invention As described above, the continuous glass melting furnace raw material supply device according to the present invention does not generate a single raw material supply V.

With each stroke of the piston, the raw material is supplied into the furnace in a hemostasis manner, and the piston and the piston sliding kite containing the piston are prevented from being overheated due to the heat in the furnace, and there is no occurrence of sticking deposits due to softening of the raw material.

The raw material fed into the furnace can easily move to the center of the furnace. With this effect, it is possible to eliminate clogging at the feed port of the feed material as in the conventional method, and
This prevents pulsation in the flow of outflowing glass caused by clogging of raw materials and eliminates clogging due to solidification of the glass outlet, so glass of stable quality can be produced at all times.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a continuous glass melting furnace raw material supply device according to an embodiment of the present invention, and Fig. 2 is a top view showing the shape of the tip of the piston of the device. Furnace bottom part, 2... Furnace ceiling eaves part, 3... Piston, 4... Piston sliding guide, 6...
...Raw material supply hopper kite tube, 6...Raw material supply port.

Claims (2)

[Claims] (1) A piston sliding guide with a built-in piston is installed in the raw material supply port formed by the furnace bottom weir and the furnace roof eaves, and the piston is pulled into the innermost part of the furnace from the raw material supply port. A material supply hopper guide cylinder is provided immediately before the piston, and the piston is set so that its tip is at a position corresponding to the outer wall surface of the furnace ceiling eaves when it is pushed out the most. Continuous glass melting furnace raw material supply device in which the end face of the raw material supply port is inclined in the direction of opening into J. (2) The continuous glass melting furnace raw material supply device according to claim 1, wherein the tip of the piston has a sawtooth-like unevenness.