JP4761575B2 - Glass product manufacturing equipment - Google Patents

Description

  The present invention relates to an apparatus for producing glass products such as glass bottles, glass cups, and plate glasses, and more particularly to an apparatus for producing glass products capable of producing so-called small lot and many types of glass products in an energy efficient manner in a short time.

  Conventionally, as a glass product manufacturing apparatus, a glass melting furnace, a temperature adjusting tank connected to the glass melting furnace, and a molding connected to a discharge port of the temperature adjusting tank through a cutting machine or the like if necessary. What is provided with a device is used. As a glass melting furnace in such a glass product manufacturing apparatus, a melting zone is formed in the upstream part of the furnace, and a clarification zone (gas venting zone) is formed from the midstream part to the downstream part in the furnace. The glass melting furnace uses a burner attached to the side wall of the glass melting furnace to melt the glass raw materials and auxiliary materials (hereinafter referred to as glass raw materials) introduced into the furnace from the most upstream part. (See, for example, Patent Documents 1 to 3).

However, in the conventional glass product manufacturing apparatus equipped with the glass melting furnace as described above, the glass raw material or the like charged into the glass melting furnace is melted by using the in-furnace radiation by the burner combustion. Therefore, 1) Even when an oxygen burner is burned as a burner, the energy efficiency is poor. 2) Various materials having different melting points are included in the glass raw materials to be put into the furnace. Among them, those having a low melting point dissolve quickly, but those having a high melting point dissolve slowly, so it is difficult to achieve homogeneous melting as a whole and the time required for homogeneous melting is long. 3) Glass produced in a glass melting furnace Due to the presence of undissolved glass raw materials at the top of the melt, there is a problem that the gas generated in the glass melt is difficult to escape and the time required for degassing is long. , Glass melting furnace becomes as very long as fruit, for replacement of the glass melt in the furnace is indeed cumbersome, 4) there is a problem that significantly unsuitable for the manufacture of glass products of small lot multi-product.
JP-A-11-11953 Japanese Patent Laid-Open No. 11-11954 JP 2005-15299 A

  The problem to be solved by the present invention is to provide an apparatus capable of producing a glass product of a small lot and various types in an energy efficient manner in a short time.

  The present invention for solving the above-mentioned problems is an upper mechanism including one or two or more divided upper furnace bodies of a glass melting furnace, and a division that forms a glass melting furnace in contact with the upper furnace body. The lower furnace body, a temperature control tank connected to the lower furnace body, and a lower mechanism comprising one or more sets including a molding device connected to the discharge port of the temperature control tank, One or both of the mechanism and the lower mechanism are movably equipped, and the upper furnace body has an oxygen burner attached to the ceiling wall in a downward direction, and the oxygen burner has an oxygen concentration of 90% by volume or more. Combustion gas is supplied, and glass raw materials and the like are supplied by gas conveyance. At least one upper furnace body of the upper mechanism is brought into contact with at least one set of lower furnace bodies of the lower mechanism, and glass is supplied. With the melting furnace formed, oxygen -Burn the furnace downward and supply glass raw material etc. downward in the flame to melt it, temporarily store the melted glass melt in the lower furnace body directly below, and flow out to the temperature control tank as it is The present invention relates to an apparatus for manufacturing a glass product.

  The glass product manufacturing apparatus according to the present invention includes an upper mechanism and a lower mechanism. The upper mechanism includes one or more divided upper furnace bodies of the glass melting furnace. The lower mechanism is connected to the divided lower furnace body that comes into contact with the upper furnace body to form a glass melting furnace, the temperature adjustment tank connected to the lower furnace body, and the discharge port of the temperature adjustment tank One set or two or more sets including the formed molding apparatus are provided. The upper mechanism and the lower mechanism are equipped so that one can move relative to the other or both. As the moving means in this case, a means for supporting the upper mechanism and / or the lower mechanism on a carriage that runs on the rail, a means for supporting the suspension by a crane that pulls on the rail, and the like are known per se. Means can be adopted.

  In the glass product manufacturing apparatus according to the present invention, the temperature adjusting tank of the lower mechanism and the configuration of the forming apparatus itself are the same as those of the conventional glass product manufacturing apparatus, except that these are movably equipped as a set. Since it is the same, the following mainly demonstrates the glass melting furnace divided | segmented into the upper furnace body and the lower furnace body. An oxygen burner is attached to the ceiling wall in a downward direction in the divided upper furnace body of the glass melting furnace in the upper mechanism.

  The oxygen burner of the upper furnace body is supplied with a combustion support gas having an oxygen concentration of 90% by volume or more, and glass raw materials and the like are supplied by gas transportation. When the oxygen burner is burned downward, glass is used. Raw materials and the like are supplied and dissolved downward in the flame. As such an oxygen burner itself, a known one can be used. For example, an oxygen burner described in JP-A-8-312938, JP-A-2000-55340, JP-A-2000-103656, and the like can be used. Can be diverted. In these oxygen burners, the nozzle structure at the tip is directed from the center to the outer periphery, for example, a fuel supply nozzle, a primary combustion gas supply nozzle, an object to be treated (glass raw material etc.) supply nozzle, and a secondary combustion gas supply Like a nozzle, it consists of a plurality of supply nozzles arranged concentrically.

  In a state where the upper mechanism and / or the lower mechanism is moved, at least one upper furnace body of the upper mechanism is brought into contact with at least one set of lower furnace bodies of the lower mechanism, and a glass melting furnace is formed by both. Combusting the oxygen burner of the upper furnace body downward and supplying glass raw material or the like downward into the flame to melt, and temporarily storing the molten glass melt at the furnace bottom of the lower furnace body, As it is, it is made to flow out to the same temperature control tank as the lower furnace body through, for example, a throat.

  As described above, when the oxygen burner is mounted downward on the ceiling wall of the upper part of the divided furnace body of the glass melting furnace and supplied with a supporting gas having an oxygen concentration of 90% by volume or more and burned downward, the flame itself In addition to the increase in temperature, the flame also heats the molten metal surface temporarily stored in the bottom of the lower furnace body located immediately below. When glass raw material or the like is supplied downward in such a flame, the glass raw material or the like dissolves in a very short time. In addition, at this time, moisture such as glass raw material supplied downward in a high-temperature flame that burns downward evaporates all at once, and those in the form of carbonate compounds decompose and release gas, so the glass melt at the bottom of the furnace The amount of gas generated inside is significantly reduced. In addition, such glass melt is temporarily stored in the bottom of the furnace, where homogenization and degassing are promoted, so that it passes through the refining zone (degassing zone) like a conventional glass melting furnace. Needless to say, there is no problem even if it is allowed to flow out into the temperature control tank as it is as a raw material for glass products. Select the most appropriate upper furnace body according to the required physical properties and shape of the glass product, and also select a set including the lower furnace body, temperature control tank and molding device, and use the upper furnace body as the lower furnace body. By forming the glass melting furnace as described above by abutting, glass products of a small lot and a variety can be manufactured in an energy efficient manner in a short time.

  In the apparatus for manufacturing glass products according to the present invention, the upper mechanism is provided with one upper furnace body and is movably equipped, and the lower mechanism includes a lower furnace body, a temperature control tank, and a molding device. It is preferable that two or more sets are included and fixedly installed, and that the upper mechanism has one upper furnace body and is fixedly installed, and the lower mechanism is the lower furnace body, the temperature adjustment tank and the molding. It is preferable that two or more sets including the device are provided and movable. In any case, the movement of the upper mechanism and the lower mechanism may be linear or ring-shaped.

  Further, the oxygen burner attached downward to the ceiling wall of the upper furnace body is provided with elevating means, and the glass melt hot water temporarily stored at the tip and bottom of the lower furnace body by the operation of the elevating means. It is preferable to make the distance between the surfaces variable. Not only can the amount of oxygen burner be burned, but also the distance between the tip of these burners and the surface of the molten glass can be changed to make the glass melt, especially the surface of the molten metal, more flexible. So that it can be controlled. Adjusting the amount of combustion of the oxygen burners changes their flame length and often changes the distance between the flame tip and the melt surface of the glass melt. Can be appropriately controlled by the lifting means.

  Furthermore, a temperature control tank is formed by forming a small pool at the bottom of the furnace body of the lower furnace body, temporarily storing the generated glass melt in the small pool, and overflowing the weir forming this from the small pool. It is preferable to let it flow into By temporarily storing the generated glass melt in such a small pool, homogenization and degassing of the glass melt can be further promoted.

  According to the glass product manufacturing apparatus of the present invention, there is an effect that it is possible to manufacture glass products of a large variety of small lots efficiently and in a short time.

  FIG. 1 is an overall plan view schematically showing a glass bottle manufacturing apparatus in a glass product manufacturing apparatus according to the present invention. The glass bottle manufacturing apparatus schematically shown in FIG. 1 includes an upper mechanism 11 and a lower mechanism 51, and the upper mechanism 11 includes one divided upper furnace body 21 of a glass melting furnace. Is divided into the lower furnace bodies 61 to 64 which are in contact with the upper furnace body 21 to form a glass melting furnace, the temperature adjusting tanks 71 to 74 connected to the lower furnace bodies 61 to 64 through throats, the temperature Cutting machines 81 to 84 (not shown in FIG. 1, not shown in FIG. 1) connected to the discharge ports of the adjustment tanks 71 to 74 and forming devices 91 to 94 connected to the cutting machines 81 to 84 via a charging chute are provided. A total of four sets are included.

  The upper furnace body 21 constituting the upper mechanism 11 is supported by a carriage 33 that is self-propelled on two parallel rails 31 and 32 via cylinder mechanisms 34 and 35. In a state where it is lifted by 35, it moves linearly along the two rails 31, 32. On the other hand, the above-mentioned groups constituting the lower mechanism 51 are installed side by side at equal intervals, and the lower furnace bodies 61 to 64 of each group move in a straight line along the two rails 31 and 32. 21 is installed at a position where it faces directly below. In the case of FIG. 1, the cylinder mechanisms 34 and 35 are operated at a position where the upper furnace body 21 faces the lower furnace body 63 directly below, and the upper furnace body 21 is lowered and brought into contact with the lower furnace body 63. This shows a state in which a glass melting furnace is formed on both sides. In the case of FIG. 1, the upper mechanism 11 having one upper furnace body 21 is movably equipped, and the lower furnace bodies 61 to 64, the temperature adjusting tanks 71 to 74, the cutting machines 81 to 84, and the molding apparatuses 91 to 94. The lower mechanism 51 having a total of four sets including the above is fixedly installed.

  FIG. 2 is a partial side view schematically showing the glass bottle manufacturing apparatus of FIG. As described above, the upper furnace body 21 is lowered and brought into contact with the lower furnace body 63 to form a glass melting furnace, and the throat 65 is provided downstream of the lower furnace body 63 forming the glass melting furnace. The cutting machine 83 is connected to the temperature adjusting tank 73, the discharge port of the temperature adjusting tank 73, and the molding device 93 is connected to the downstream side of the cutting machine 83 via a charging chute. Except for the glass melting furnace, the configuration is almost the same as that of the conventional glass bottle manufacturing apparatus, but the glass melting furnace schematically shown in FIGS. 1 and 2 has a substantially square cross section and is slightly vertically long as a whole. The outer appearance is a rectangular parallelepiped, and the oxygen burner 22 is attached downward on the ceiling wall of the upper furnace body 21 constituting the same, and the glass melts at the bottom of the lower furnace body 63 where the oxygen burner 22 faces directly below. Object A is temporarily stored. The oxygen burner 22 is attached to the ceiling wall of the upper furnace body 21 via the cylinder mechanism 23 and can be moved up and down, and the distance between the tip of the glass burner A and the molten metal surface of the glass melt A is variable. ing.

  The oxygen burner 22 is composed of a plurality of supply nozzles arranged concentrically as described above. The oxygen burner 22 is supplied with combustion-supporting gas having an oxygen concentration of 90% by volume or more from the adsorption-type oxygen generator 24 via the combustion control unit 25, and from the fuel tank 26 via the combustion control unit 25. Fuel gas is supplied. Further, a gas transport system 41 is connected to the oxygen burner 22 so that powdery glass raw materials and the like are supplied by gas transport. A compressor 42 with a dryer is connected to the upstream side of the gas transport system 41, and a glass raw material supply system 43 is connected in the middle thereof. The glass raw material supply system 43 includes a glass raw material storage hopper 44, a quantitative cutting device 45 connected to the hopper 44, a vibrating sieve 46 connected to the quantitative cutting device 45, and a fixed quantity connected to the vibrating sieve 46. A crusher 48 is provided that includes a supply device 47 and crushes the coarse material sieved by the vibrating sieve 46 and returns it to the upstream side of the vibrating sieve 46. Powdered glass raw material from the glass raw material supply system 43 to the gas conveying system 41 via the hopper 44, the quantitative cutting device 45, the vibrating sieve 46 and the quantitative supply device 47, and also via the crusher 48 as necessary. Etc. are supplied to the oxygen burner 22 while being supplied in a fixed quantity. In the case of FIG. 2, the fuel gas and the combustion supporting gas having an oxygen concentration of 90% by volume or more are supplied to the oxygen burner 22 mounted downward on the ceiling wall of the upper furnace body 21 forming the glass melting furnace and burned downward. In this flame, powdery glass raw material or the like is supplied downward and melted.

  In the case of FIG. 2, the glass raw material or the like is melted by the oxygen burner 22 of the upper furnace body 21 forming the glass melting furnace as described above, and the generated glass melt A is formed in the lower furnace body 63 forming the glass melting furnace. After temporarily storing in the bottom of the furnace, and promoting the homogenization and degassing here, it flows out to the temperature adjusting tank 73 through the throat 65. And after cutting the glass melt whose temperature has been adjusted in the temperature adjusting tank 73 into the amount of one glass bottle with the cutting machine 83 through the discharge port, the cut one is provided to the forming device 93 through the charging chute, The glass bottle B is manufactured by blow molding.

  Depending on the required physical properties of the glass bottle, the composition of the powdered glass raw material and the like stored in the hopper 44 is changed. For example, when the leftmost group in FIG. 1 is selected, a glass melting furnace is formed by moving the upper furnace body 21 onto the lower furnace body 61 of this group and bringing them into contact with each other. A glass bottle is produced in the same manner as described above.

  FIG. 3 is an overall plan view schematically showing a glass product manufacturing apparatus according to the present invention with a part of another glass bottle manufacturing apparatus omitted. Here, for convenience of explanation, the same reference numerals as those in FIG. 1 are given to the same components as those in FIG. The glass bottle manufacturing apparatus schematically shown in FIG. 3 also includes an upper mechanism 11a and a lower mechanism 51a. The upper mechanism 11a includes one upper furnace body 21a that is a divided glass melting furnace, and the lower mechanism 51a. Is a divided lower furnace body 61a to 64a that comes into contact with the upper furnace body 21a to form a glass melting furnace, temperature adjustment tanks 71a to 74a connected to the lower furnace bodies 61a to 64a through a throat, Cutting machines 81a to 84a connected to the discharge ports of the adjusting tanks 71a to 74a (not shown in FIG. 3, but the same shall apply hereinafter) and forming apparatuses 91a to 94a connected to the cutting machines 81a to 84a via a charging chute. A total of four sets are included.

  The upper furnace body 21a constituting the upper mechanism 11a does not move in the horizontal direction, but is moved up and down by a cylinder mechanism (not shown). On the other hand, each of the above-mentioned groups constituting the lower mechanism 51a is mounted on the carriage 33a in a line with equal intervals, and the carriage 33a moves linearly along two parallel rails 31a and 32a. Yes. In the case of FIG. 3, a cylinder mechanism (not shown) is operated at a position where the upper furnace body 21a directly faces the lower furnace body 63a, and the upper furnace body 21a is lowered and brought into contact with the lower furnace body 63a. Thus, a state in which a glass melting furnace is formed on both sides is shown. In the case of FIG. 3, the upper mechanism 11a having one upper furnace body 21a is fixedly installed except for raising and lowering, and the lower furnace bodies 61a to 64a, the temperature adjusting tanks 71a to 74a, the cutting machines 81a to 84a, and the molding apparatus. A lower mechanism 51a having a total of four sets including 91a to 94a is movably equipped. Although not described, the case of FIG. 3 is the same as that of FIGS.

  FIG. 4 is an overall plan view schematically showing a glass product manufacturing apparatus according to the present invention with a part of another glass bottle manufacturing apparatus omitted. Here, for convenience of explanation, components similar to those in FIG. 1 are denoted by the same reference numerals as in FIG. The glass bottle manufacturing apparatus schematically shown in FIG. 4 includes an upper mechanism 11b and a lower mechanism 51b. The upper mechanism 11b includes one divided upper furnace body 21b of a glass melting furnace, and the lower mechanism 51b. Is divided into the lower furnace bodies 61b to 66b, which contact the upper furnace body 21b to form a glass melting furnace, the temperature adjusting tanks 71b to 76b connected to the lower furnace bodies 61b to 66b through the throat, Cutting machines 81b to 86b (not shown in FIG. 4, omitted in FIG. 4) connected to the discharge ports of the adjustment tanks 71b to 76b, and forming devices 91b to 96b connected to the cutting machines 81b to 86b via a charging chute are provided. There are a total of 6 pairs including the set.

  The upper furnace body 21b constituting the upper mechanism 11b is self-propelled on the two ring-shaped rails 31b and 32b and is supported on a cart (not shown) via a cylinder mechanism. It moves in a ring shape along the two rails 31b and 32b in a state where it is lifted by the above. On the other hand, the above-mentioned groups constituting the lower mechanism 51b are installed radially at equal intervals, and the lower furnace bodies 61b to 66b of each group move in a ring shape along the two rails 31b and 32b. It is installed in a position where 21b faces directly below. In the case of FIG. 4, a cylinder mechanism (not shown) is operated at a position where the upper furnace body 21b directly faces the lower furnace body 63b, and the upper furnace body 21b is lowered and brought into contact with the lower furnace body 63b. Thus, a state in which a glass melting furnace is formed on both sides is shown. In the case of FIG. 4, an upper mechanism 11b including one upper furnace body 21b is movably equipped, and lower furnace bodies 61b to 66b, temperature control tanks 71b to 76b, cutting machines 81b to 86b, and molding apparatuses 91b to 96b. The lower mechanism 51b having a total of six sets including the above is fixedly installed. Although the description is omitted, the other cases in FIG. 4 are the same as those in FIGS.

  FIG. 5 is a partial side view schematically showing a further part of the glass bottle manufacturing apparatus in the glass product according to the present invention, partially enlarged in vertical section. 5 is the same as that of the glass bottle manufacturing apparatus of FIGS. 1 and 2, and FIG. 5 corresponds to FIG. 2. Here, for convenience of explanation, FIG. Constituent parts that are the same as those shown in FIG. As in the glass bottle manufacturing apparatus of FIG. 2, the glass bottle manufacturing apparatus of FIG. 5 forms a glass melting furnace by lowering the upper furnace body 21c of the upper mechanism 11c and bringing it into contact with the lower furnace body 63c of the lower mechanism 51c. The temperature adjusting tank 73c is connected to the downstream side of the lower furnace body 63c forming the glass melting furnace, and the cutting machine 83c is connected to the discharge port of the temperature adjusting tank 73c, and further downstream of the cutting machine 83c. In either case, a molding apparatus is connected via a charging chute (not shown). An oxygen burner 22c is attached downward on the ceiling wall of the upper furnace body 21c, and a small pool 66 is formed at the furnace bottom of the lower furnace body 63c with the oxygen burner 22c facing directly below, and is generated in the small pool 66. The glass melt C is temporarily stored. The oxygen burner 22c is attached to the ceiling wall of the upper furnace body 21c via the cylinder mechanism 23c, and can move up and down. The distance between the tip of the oxygen burner 22c and the molten metal surface of the glass melt C in the small pool 66 is provided. Is variable. In the case of FIG. 5, glass raw materials and the like are melted by the oxygen burner 22c of the upper furnace body 21c that forms the glass melting furnace, and the generated glass melt C is small in the furnace bottom portion of the lower furnace body 63c that forms the glass melting furnace. After temporarily storing in the pool 66 and further promoting homogenization and degassing, the weir 67 forming the small pool 66 overflows and flows out to the temperature control tank 73c. Then, after the glass melt whose temperature has been adjusted in the temperature adjusting tank 73c is cut into the amount of one glass bottle by the cutting machine 83c through the discharge port, all of the cut pieces are sent to the molding apparatus through a not-shown charging chute. The glass bottle is manufactured by blow molding.

BRIEF DESCRIPTION OF THE DRAWINGS The whole top view which abbreviate | omits and partially shows the manufacturing apparatus of a glass bottle among the manufacturing apparatuses of the glass product which concerns on this invention. FIG. 2 is a partial side view schematically showing the glass bottle manufacturing apparatus of FIG. The whole top view which abbreviate | omits and partially shows the manufacturing apparatus of another glass bottle among the manufacturing apparatuses of the glass product which concerns on this invention. The whole top view which abbreviate | omits and partially shows the manufacturing apparatus of another glass bottle among the manufacturing apparatuses of the glass product which concerns on this invention. The partial side view which expands and shows in part a longitudinal cross-section partially another glass bottle manufacturing apparatus among the glass product manufacturing apparatuses which concern on this invention.

Explanation of symbols

11, 11a, 11b, 11c Upper mechanism 21, 21a, 21b, 21c Upper furnace body 22, 22c Oxygen burner 31, 32, 31a, 32a, 31b, 32b, 31c, 32c Rail 33, 33a, 33c Carriage 23, 34, 35, 23c, 34c, 35c Cylinder mechanism 41 Gas transport system 43 Glass raw material supply system 61-64, 61a-64a, 61b-66b, 63c Lower furnace body 71-74, 71a-74a, 71b-76b, 73c Temperature adjustment Tank 91-94, 91a-94a, 91b-96b

Claims (5)

  An upper mechanism having one or more divided upper furnace bodies of a glass melting furnace, a divided lower furnace body that comes into contact with the upper furnace body to form a glass melting furnace, and the lower furnace body And a lower mechanism provided with one or two or more sets including a molding device connected to the discharge port of the temperature adjusting tank, and one or both of the upper mechanism and the lower mechanism are The upper furnace body has an oxygen burner attached to the ceiling wall in a downward direction. The oxygen burner is supplied with a combustion support gas having an oxygen concentration of 90% by volume or more. In a state where the auxiliary raw material is supplied by gas conveyance, and at least one upper furnace body of the upper mechanism is brought into contact with at least one set of lower furnace bodies of the lower mechanism to form a glass melting furnace Burn the oxygen burner downwards At the same time, the glass raw material and auxiliary raw materials are supplied and melted downward in the flame, and the melted glass melt is temporarily stored in the lower furnace body directly below, and allowed to flow out to the temperature control tank as it is. An apparatus for producing glass products characterized by comprising:   The upper mechanism includes one upper furnace body and is movably equipped, and the lower mechanism includes two or more sets including a lower furnace body, a temperature control tank, and a molding device, and is fixedly installed. The glass product manufacturing apparatus described.   The upper mechanism includes one upper furnace body and is fixedly installed, and the lower mechanism includes two or more sets including a lower furnace body, a temperature control tank, and a molding device, and is movably equipped. The glass product manufacturing apparatus described.   A lifting means is provided in the oxygen burner of the upper furnace body, and the distance between the tip of the oxygen burner and the molten metal surface of the glass melt temporarily stored in the lower furnace body by the operation of the lifting means is The apparatus for manufacturing a glass product according to any one of claims 1 to 3, wherein the apparatus is variable.   A small pool is formed in the bottom of the furnace body of the lower furnace body, glass melt is temporarily stored in the small pool, and is allowed to flow out from the small pool to the temperature adjustment tank by overflow. 4. The apparatus for producing a glass product according to any one of 4 above.

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