摘要:
Provided is a glass stirring device which is capable of suppressing slip-through of molten glass in the vicinity of a wall surface of a delivery tube, and is also excellent in a stirring action of the molten glass within the molten glass delivery tube. The present invention is concerned with a molten glass stirring device that stirs molten glass within a molten glass delivery tube, the molten glass stirring device including: a rotatable central axis; and a stirring portion provided on the central axis, wherein: the stirring portion includes a stirring blade and a ring paddle; the stirring portion is provided with two or more stirring blades in the axial direction of the central axis and also provided with two or more stirring blades in the circumferential direction of the central axis; and the stirring portion is provided with one or more ring paddles in the axial direction of the central axis.
摘要:
Stirrer (1) for stirring molten glass (16), whereby the stirrer (1) comprises - a shaft (2) having a tip (4) and having a central longitudinal axis (L), and - one or more inner stirrer blades (5,6) which are attached to the shaft (2), and - one or more outer stirrer blades (7,8) which are attached to the shaft (2), whereby the inner stirrer blades (5,6) are attached closer to the shaft (2) than the outer stirrer blades (7,8), whereby, when considering the stirrer in a cylindrical coordinate system (11), both the one or more inner stirrer blades (5,6) as well as the one or more outer stirrer blades (7,8) are disposed at an angle (±, ²) to the central longitudinal axis (L), whereby said angle (±, ²) is between 0° and 90° not including these values, and are disposed having a least a blade section with a normal vector (N, P, Q, R), on the side directed towards the tip (4), with an angular component (N A , P A , Q A , R A ).
摘要:
The present invention provides a stirrer for manufacturing glass including a stirrer shaft and a multi-staged rod-shaped stirrer blade fixed so as to penetrate through the stirrer shaft. This stirrer blade is a hollow cylindrical body including: a cylinder obtained by seam welding of two opposing sides of a flat plate made, for example, from strengthened platinum containing platinum or a platinum alloy as a matrix and metallic oxide dispersed in the plate; and a disk welded to an entire circumference of both ends of the cylinder and made from an identical material, and it penetrates so that a weld line crosses a center axis of the stirrer shaft, and is fixed so that a locus of an end portion of the blade forms a spiral shape. In addition, the rod-shaped stirrer blade has a core layer showing a dispersed structure that exists in a cross-sectional structure at a fixing portion with the stirrer shaft and does not receive heat effect resulting from fixing. The present invention is effective in stirring of molten glass having high viscosity, and has enhanced stirring operation and improved durability against deformation and damage.
摘要:
Verfahren zur Herstellung eines Glasartikels aus einer Glasschmelze, umfassend wenigstens die Schritte: - kontinuierliches Einleiten der Glasschmelze in ein Rührgefäß, - Rühren der Glasschmelze in dem Rührgefäß mittels wenigstens einem Flügelrührer, wobei der Flügelrührer wenigstens einen Rührflügel aufweist, der an einer im Wesentlichen senkrecht im Rührgefäß angeordneten Rührerwelle befestigt ist, - kontinuierliches Ausleiten der Glasschmelze aus dem Rührgefäß, - Formen der Glasschmelze unter Erhalt des Glasartikels, wobei 1. durch das Rühren die Glasschmelze, die sich an der Oberfläche im Rührgefäß befindet, in das Rührgefäß eingezogen wird, so dass die Bildung einer Oberflächenschicht der Glasschmelze mit einer anderen Zusammensetzung als die Zusammensetzung der eingeleiteten Glasschmelze verhindert oder wenigstens minimiert wird, oder 2. durch das Rühren die Glasschmelze, die sich an der Oberfläche im Rührgefäß befindet, nicht oder nur unwesentlich in das Rührgefäß eingezogen wird.