SU1212986A1 - Device for metering glass compound - Google Patents

Description

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The invention relates to the manufacture of glass products and can be used in the preparation of ozonized glass mass portions with the aim of further forming piece goods from them, a national solvent, high-quality dishes, stelotara, glass blocks, etc.

The purpose of the invention is to increase the reliability of the device and simplify the changeover of technological dosing modes.

Fig. 1 shows a device for dispensing glass melt, a general view; 2 is the same, the moment of injection of the molten glass into the portion chamber; FIG. 4 is the same as the moment when the separated drop falls through the open shut-off Shutter hole to the for-Movani position; FIG. 5 - the same, the moment of injection of the glass melt into the porion chamber during the new cycle.

The device contains a feeder feeder 1, a refractory plunger 2, a point 3, made in the form of a reverse truncated cone and fixed by a spectacle holder 4 with a reflector 5 installed on it with heating burners 6, To a replaceable point 3 coaxially with a gap 7 equal to 0.4-0, 5 mm, adopts a portion chamber, made in the form of a truncated cone and consisting of a cooled body 8, in which a ceramic insert 10 is installed by means of a cover 9. The cutting tool 1 1 is filled in the form of a plate approximately 0.3 mm thick from heat-resistant steel. The plate is fixed in the horseshoe-shaped frame 12 by means of overlays 13 with the possibility of reciprocating through the gap 7 between the batch chamber and point 3 by means of a pneumatic cylinder 14. The bottom of the batch chamber channel is blocked by a locking element in the housing 15 of which 16 is fixed with a ceramic insert 17 The element is designed in the form of a shutter, which is periodically opened by a pneumatic cylinder 18 for dispensing a glass mass to the forming position.

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The device works in the following way.

Fireproof plunger 2 performs a vertical reciprocating

movement, J5 the moment of lowering the plunger 2 down the molten glass is injected into the batch chamber, closed from below with a ceramic liner 17 of the locking element (glass mass

due to high viscosity and surface tension does not penetrate into the gap 7, the value of 0.4-0.5 mm (between point 3 and the batch chamber). The cavity of the batch chamber, made in the form of a truncated cone,

together with the output channel of the point 3, having the form of a reverse truncated cone, forms a channel of variable cross section with the smallest diameter at the site of the gap 7, and thus provides clamping of the glass pillar at the specified location,

At the time of the start of the movement of the plunger

up in place pinch due

retraction of the glass melt forms a neck through which a sharp movement of the cutting tool 11 through the gap 7 results in cutting off a portion of the molten glass. The separated drop through the opening of the locking element hole under the action of gravity falls on the molding position. The continued lift of the plunger 2 provides the time required to close the portion of the pH chamber by the locking element. Then the cycle repeats.

The filling time of the batch chamber, which determines the beginning of the cutting, and the glass melt is retracted, is provided by independent adjustment of the height of the plunger 2 above point 3, its stroke, the speed of lifting and lowering. The start and speed of movement of the cutting tool 11 and the locking element is set in accordance with the ratio of the filling time of the batch chamber, the cutting time and the melting of the glass melt upwards,

The cutting tool 11 and the locking element are cooled to the necessary degree by the directed air flow at the moment of holding the vehicle; they are outside the working half.

When using the proposed device, due to the short time of contact of the exiting tool with the glass shatter,

overheating of the web, its warping and jamming in the gap between the spectacle and the pioneer chamber, as well as its durability, which, taking into account the simplicity and ease of replacement, significantly reduces the downtime of the entire equipment complex during scheduled and emergency repairs.

In addition, the melt float temperature increases, i.e.

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the likelihood of its freezing in the pion chamber is reduced due to the use of ceramic liners in the working bodies, which have a hot glass sticking temperature significantly higher than that of metal, and it is convenient and independent to regulate individual phases and the entire technical process as a whole when changing the range of products produced.

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Fig.Z

FIG 5

Niggle

VNIIPI Order 720/33 Circulation 458 Subscription Branch PPP Patent, city, Uzhgorod, Proektna str., 4

Claims (1)

USSR copyright certificate No. 1010023, cl. С 03 В 7/08, 1981. 'DEVICE FOR DOSING THE GLASS MASS, containing a feeder, refractory plunger, a point, a dosing glass with a batch chamber, a cutting tool made of heat-resistant material and a locking element, characterized in that, in order to increase reliability in operation devices and simplify the readjustment of technological dosing regimes, the portioning chamber is installed with a gap with respect to the point and is made in the form of a truncated cone, and the point is in the form of a reverse truncated cone, and the cutting tool is made in the form of a layer s mounted for reciprocating movement through the gap between the batch chamber and ochkom and za- <g pyran member mounted for reciprocating movement and is formed with a ceramic liner.