166results about "Feeder spouts" patented technology

A front end for a glass forming operation comprises an open channel and at least one burner. The channel has at least one surface. The surface has at least one hole therein. The burner is oriented in the hole at an acute angle relative to the surface. In another embodiment of the invention, the channel has a top and a pair of sidewalls each having a surface. At least one hole is in at least one of the surfaces. The hole is at an acute angle relative to at least one surface. The burner is an oxygen-fired burner. In yet another embodiment of the invention, the top and sidewalls each have a super structure surface constructed of refractory material. The channel has an upstream end and a downstream end. At least one of the surfaces has a plurality of holes therein. The burners extend at an acute angle relative to at least one surface and in a plane extending between the upstream end and the downstream end and perpendicular to at least one surface. Oxygen-fired burners extend axially through corresponding holes.

A strengthened glass container or vessel such as, but not limited to, vials for holding pharmaceutical products or vaccines in a hermetic and/or sterile state. The strengthened glass container undergoes a strengthening process that produces compression at the surface and tension within the container wall. The strengthening process is designed such that the tension within the wall is great enough to ensure catastrophic failure of the container, thus rendering the product unusable, should sterility be compromised by a through-wall crack. The tension is greater than a threshold central tension, above which catastrophic failure of the container is guaranteed, thus eliminating any potential for violation of pharmaceutical integrity.

According to a first embodiment, a refractory orifice ring of a glass forming apparatus is provided. The orifice ring includes an annular side wall and a base wall. At least one discharge hole is formed in the base wall. The discharge hole includes a top opening and a bottom opening, wherein the top opening has a surface area greater than a surface area of the bottom opening.

The present invention provides devices for glass melt devlivery and methods for using these devices. In these devices, a delivery nozzle comprising at least one platinum group metal material is directly heated by electricty. To facilitate heating, a cylindrical heating ring is mounted in ceramic base. The device's construction ensures a regulatable heating of the nozzle and the melted glass flux.

A hollow tubular body for molten glass in which local-overheating is reduced at the time of conduction heating. The hollow tubular body has a platinum or platinum alloy hollow tube, used for conduction heating, wherein a platinum or platinum alloy ring electrode is joined to the outer circumference of the hollow tube, a lead-out electrode is joined to an outer edge of the ring electrode, and a thick portion is provided in at least the joint portion closest to the lead-out electrode, of the ring electrode and in the vicinity thereof.

A hollow tubular body for molten glass by which local-overheating in the electrode for conduction heating is prevented. A hollow tubular body having a platinum or platinum alloy hollow tube, used for conduction heating is characterized in that a ring electrode is joined to the outer circumference of the hollow tube, at least one lead-out electrode is joined to an outer edge of the ring electrode, and the ring electrode comprises a core portion of electrode of platinum or platinum alloy and a thick portion of platinum or platinum alloy or of a metallic material other than platinum or platinum alloy, provided at an outer side of the core portion of electrode.

Apparatus, which is suitable for being surrounded by molten glass, the apparatus having a shank which has at least one at least partially seamless tube consisting of an oxide dispersion-strengthened PGM material, the shank having at least one thickened portion on which an actuating device is arranged.

Microwave radiation of frequency 0.1 to 20 GHz, is applied to the melt of viscosity in the range 10⁴ to 10¹ Pa.s. The outside surface of heated space, where an outlet of the waveguide of microwave radiation is located, can be cooled. The microwave radiation in the melt may be reflected by the reflective metallic elements in the melt back to the place of radiation entry into the melt and shielded from the surroundings by a shielding metallic element. An outlet is provided of at least one waveguide from the source of the microwave radiation, in any direction to the outside surface of the melt, into the space with the melt of a given viscosity. At least one waveguide is led, for example, to the outside surface of the bottom of the channel of the forehearth.

The invention provides a microwave heating feeding passage and glass products manufacturing method using the feeding passage, wherein a microwave generation equipment is arranged on the material feeding passage, the microwave can heat the glass liquid with uniform and compatible glass liquid bulk temperature. The glass product preparing process employs a heating procedure for initiating the microwave generating apparatus and heating the glass liquid.

An electronic servo feeding system is composed of an electronic servo punching unit, an electronic servo parallel shearing unit, and an electronic servo homogenizing system. Under the action of computer, the intelligent control is applied to the electronic feeding system. Its advantages are simple structure, correct and reliable operations, and high rate of qualified products.

The invention provides a leaking molding device and method for low-viscosity optical glass. The leaking molding device (100) comprises a leaking pipe (1), a cooling buffer cavity (2) and a drawing molding pipe (3), wherein the wall of the side, close to the leaking pipe (1), of the cooling buffer cavity (2) is provided with a pressure adjusting hole (203); the pressure adjusting hole (203) is connected with one end of a pressure adjusting pipe (4); excepting a cavity inlet (201), a cavity outlet (202) and the pressure adjusting hole (203), the cooling buffer cavity (2) is of a sealed structure; and the on and off of the pressure adjusting pipe (4) are controlled by a control system; and when the pressure adjusting pipe (4) is in an on state, under the control of the control system, the pressure adjusting pipe (4) exhausts or aerates the cooling buffer cavity (2). The leaking molding method performs leaking molding on the low-viscosity optical glass by using the leaking molding device (100).

In order to portion glass melts and to increase the flow rate and transmission of optical melts, the inventive method for accurately portioning low-viscous glasses, whose viscosity is equal to 10^7.6 dPa.s with a temperature equal to or less than 670 DEG C, in particular glasses used for blank pressing or low-Tg glasses, is based on a continuous melting process consisting in repeatedly supplying the portions, whose weight ranges from 0.2 to 10 grams with a relative and/or absolute weight deviation less than 5 % with respect to the portion average weight, by means of a clocking needle feeder (100) which comprises a nozzle (3) provided with several outlets (7).

Disclosed is an apparatus for conditioning molten glass. The apparatus includes a connecting tube assembly having a conduit for conveying the molten glass, the conduit (108) including at least two flanges (112, 114) and a sealing member (118) disposed between the at least two flanges (112, 114) around an outer peripheral region of the flanges, thereby forming an enclosed volume between an outer wall (110) of the conduit, the at least two flanges (112, 114) and the sealing member (118). An atmosphere within the volume may be controlled such that a predetermined partial pressure of hydrogen or a predetermined partial pressure of oxygen may be maintained within the volume. A current may be established between the at least two flanges to heat the conduit.

Disclosed is an apparatus and method of making molten glass. The apparatus includes a vessel for conveying the molten glass and at least one flange configured to supply an electric current to the vessel through the flange, the flange including a first ring extending completely around the vessel in a closed loop, the first ring comprising a first portion including a first thickness and a second portion including a second thickness different from the first thickness, wherein the first portion and the second portion overlap in a plane of the flange such that at least a portion of the first portion is positioned between at least a portion of the second portion and the vessel wall, and neither the first portion nor the second portion extends completely around the vessel. Also disclosed is a method of making glass using the disclosed flange.

The invention provides a smelt outflow nozzle that the melt has little wet rising on the nozzle when manufactures micro spherical particle or preformed materials, and the glass that has wet rising on the front end of the nozzle is easily to completely removed. The smelt outflow nozzle (1) outflows the smelt from the front end (2) and has a flow passage (6) of the smelt, comprising an inner surface (31) facing to the flow passage (6), an outer surface (32) covering the inner surface (31) and an end face (21) connected with the inner surface (31) and the outer surface (32) at the front end (2).The mean roughness (Ra) of center line of the outer surface (32) is less than or equal to 1.6 [mu]m.

The invention provides a stirring blade for molten glass and stirring device therefore, capable of completely stirring the molten glass including the center area in a groove to homogenize the molten glass without increasing rotation speed. The stirring blade comprises: a cross-bar first wing (12) extending along the vertical direction at the position far away from a rotation axle (L10) along the rotation radius direction and rotating adjacent to the inner wall of a stirring groove (1) to stirring the molten glass at the perimeter area of the stirring groove; a cross-bar second wing (13) extending along the rotation radius direction and rotating in the range from the center area of the stirring groove to the perimeter area to stir the molten glass in the range of from the center area to the perimeter area; a circular disk shaped third wing (14) at the inner circle side of the first wing and extending in plane shape along the direction orthogonal with the rotation axle and guiding the molten glass in the center area of the stirring groove to the perimeter area.

According to one embodiment, a method for forming a laminated glass sheet includes forming a multi-layer glass melt (300) from a molten core glass (106) and at least one molten cladding glass (126). The multi-layer glass melt (300) has a width W_m, a melt thickness T_m and a core to cladding thickness ratio T_C:T_Cl. The multi-layer glass melt (300) is directed onto the surface of a molten metal bath (162) contained in a float tank (160). The width W_m of the multi-layer glass melt (300) is less than the width W_f of the float tank (160) prior to the multi-layer glass melt (300) entering the float tank (160). The multilayer glass melt (300) flows over the surface of the molten metal bath (162) such that the width W_m of the multi-layer glass melt (300) increases, the melt thickness T_m decreases, and the core to cladding thickness ratio T_C:T_Cl remains constant as the multi-layer glass melt (300) solidifies into a laminated glass sheet. The invention also relates to the associated apparatus.

The invention relates to a device and a system for cleaning separated crystal of a stirring rod of a platinum channel. The device comprises a steel brush (2) and a coating sleeve (1), wherein the coating sleeve (1) is coated at the periphery of a stirring rod (4); the steel brush (2) comprises a connecting rod (22) and a brush head (21), and the brush head (21) is positioned at the end part of the connecting rod (22); the coating sleeve (1) is provided with an opening (11) for the brush head (21) to enter to brush off the separated crystal which is attached to the stirring rod (4); the connecting rod (22) is of a hollow structure, so that air suction equipment (3) is capable of being communicated with fluid in the coating sleeve (1) through the connecting rod (22), thereby sucking the separated crystal brushed off by the brush head (21). The device and the system provided by the invention have the advantages that the falling amount of the separated crystal in the traditional stirring rod cleaning process is effectively reduced, so that the excitation amount of air bubbles is reduced, the discarding time of air bubbles is shortened, and the output loss is reduced.