All-electric melting furnace for medicinal glass

Abstract

The utility model belongs to the technical field of medicinal glass processing equipment, and particularly relates to an all-electric melting furnace for medicinal glass, which comprises a furnace foundation and a melting furnace arranged at the top of the furnace foundation, the feeding pipe is arranged on the peripheral side wall of the top of the melting furnace, and the liquid flowing pipe is arranged on the peripheral side wall of the bottom of the melting furnace; the number of the electrode heating assemblies is four, three of the electrode heating assemblies are arranged on a furnace body of the melting furnace at intervals from top to bottom, the other electrode heating assembly is arranged at the bottom of the melting furnace, and the distances between electrode pipes in the three electrode heating assemblies arranged on the furnace body of the melting furnace are gradually reduced; the number of the electrode tubes is gradually increased, and the problems that when a total oxygen furnace or a high-heat horseshoe flame kiln is adopted for smelting, waste gas, waste materials and the like are generated in the smelting process, environmental protection is not facilitated, and in the smelting process, the fuel combustion efficiency is not high, the energy consumption loss is large, and energy is not saved enough are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medicinal glass processing equipment, and particularly relates to a fully electric melting furnace for medicinal glass. Background Art

[0002] Medicinal glass has higher chemical stability and acid and water resistance, so it is often used in the packaging of drugs such as freeze-dried agents, powder injections, water injections, oral liquids, and infusions. Among them, soda-lime brown glass tubes are a special type of medicinal glass, mainly composed of silicon dioxide, sodium oxide, and calcium oxide, and specific metal oxide colorants such as iron or chromium compounds are also added during the manufacturing process. These additives not only give the glass color but also enhance its ability to block ultraviolet rays.

[0003] In many current glass manufacturing enterprises, the melting of medicinal glass still uses all-oxygen furnaces and high-temperature horseshoe flame kilns for melting. When using all-oxygen furnaces or high-temperature horseshoe flame kilns for melting, waste gas, waste materials, etc. will be generated during the melting process, which is not conducive to environmental protection. In addition, the fuel combustion efficiency during the melting process is not high, and the energy consumption loss is relatively large, resulting in insufficient energy conservation. Summary of the Utility Model

[0004] Based on the problems mentioned in the above background art, the utility model provides a fully electric melting furnace for medicinal glass, which is used to solve the problems that when using all-oxygen furnaces or high-temperature horseshoe flame kilns for melting, waste gas, waste materials, etc. will be generated during the melting process, which is not conducive to environmental protection, and the fuel combustion efficiency during the melting process is not high, and the energy consumption loss is relatively large, resulting in insufficient energy conservation.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A fully electric melting furnace for medicinal glass, comprising:

[0007] A furnace foundation and a melting furnace arranged on the top of the furnace foundation;

[0008] A feeding pipe and a liquid flow pipe, the feeding pipe is arranged on the circumferential side wall of the top of the melting furnace, and the liquid flow pipe is arranged on the circumferential side wall of the bottom of the melting furnace;

[0009] An electrode heating assembly, there are four groups of the electrode heating assemblies, three of the electrode heating assemblies are arranged at intervals from top to bottom on the furnace body of the melting furnace, and the other group of the electrode heating assembly is arranged at the bottom of the melting furnace. The distance between the electrode tubes in each of the three electrode heating assemblies arranged on the furnace body of the melting furnace gradually decreases, and the number of electrode tubes gradually increases.

[0010] On the basis of the above technical solution, the utility model has also made the following improvements:

[0011] Further, the electrode heating assembly located in the upper furnace body of the melting furnace is a first-stage electrode group. Each electrode in the first-stage electrode group is divided into three layers, and the spacing between each layer of electrodes is 30 cm.

[0012] Further, the electrode heating assembly located in the middle furnace body of the melting furnace is a second-stage electrode group. Each electrode in the second-stage electrode group is divided into five layers, and the spacing between each layer of electrodes is 20 cm.

[0013] Further, the electrode heating assembly located in the lower furnace body of the melting furnace is a third-stage electrode group. Each electrode in the third-stage electrode group is divided into seven layers, and the spacing between each layer of electrodes is 10 cm.

[0014] Further, the spacing between the first-stage electrode group, the second-stage electrode group and the third-stage electrode group is 15 cm.

[0015] Further, the electrode heating assembly located at the bottom of the melting furnace is a fourth-stage electrode group. Each electrode in the fourth-stage electrode group is arranged in a circular array and distributed in layers, and the spacing between the inner and outer layer electrodes is 15 cm.

[0016] Further, a furnace cover is provided at the top of the melting furnace.

[0017] Advantages of the utility model:

[0018] 1. By providing the melting furnace and four groups of electrode heating assemblies, after the batch material is added into the melting furnace through the feeding pipe, the four groups of electrode heating assemblies are used to heat and melt the batch material. Due to the special setting of the four groups of electrode heating assemblies, the batch material is heated and melted into a medium-temperature glass liquid layer at the first-stage electrode group, further melted and decomposed at the second-stage electrode group, so that a high-temperature glass liquid layer is reached at the third-stage electrode group and the fourth-stage electrode group, thus completing the full melting of the batch material; and during the melting process of the batch material, the grading melting from top to bottom is adopted throughout, which can make full use of the heating energy of the four groups of electrode heating assemblies, improve the thermal utilization rate and save more energy consumption.

[0019] 2. Since during the smelting process of the batch material, the batch material layer above the first-stage electrode group is not heated, and the temperature of the batch material layer is low at this time. When continuous feeding causes the batch material to move down to the third and fourth-stage electrode groups and is decomposed and melted into a high-temperature glass liquid layer by high temperature, the high-temperature gas generated by the high-temperature decomposition and melting will rise to the low-temperature batch material layer at the top. When the high-temperature gas enters the low-temperature batch material layer and meets cold, the high-temperature gas will condense and adhere to the batch material, and then move down with the batch material for heating and decomposition, thus avoiding the gas from running out of the melting furnace and being beneficial to environmental protection. Description of the drawings

[0020] The utility model can be further illustrated by the non-limiting embodiments given in the drawings;

[0021] Figure 1 The top view of an all-electric furnace for pharmaceutical glass of the present utility model;

[0022] Figure 2 The plan view of an all-electric furnace for pharmaceutical glass of the present utility model;

[0023] Figure 3 The sectional view of an all-electric furnace for pharmaceutical glass of the present utility model.

[0024] The reference numerals in the drawings are as follows:

[0025] 1. Furnace foundation; 2. Melting furnace; 201. Charging pipe; 202. Flowing liquid pipe; 203. Furnace cover; 3. First-stage electrode group; 4. Second-stage electrode group; 5. Third-stage electrode group; 6. Fourth-stage electrode group; 7. Batch layer; 8. Medium-temperature glass liquid layer; 9. High-temperature glass liquid layer. Detailed implementation manners

[0026] As Figures 1 to 3 shown, an all-electric furnace for pharmaceutical glass includes:

[0027] A furnace foundation 1 and a melting furnace 2 arranged on the top of the furnace foundation 1. A furnace cover 203 is arranged on the top of the melting furnace 2. The arranged furnace cover 203 is detachable, which is convenient for maintenance personnel to perform maintenance on the inside of the melting furnace 2 when the furnace is shut down;

[0028] A charging pipe 201 and a flowing liquid pipe 202. The charging pipe 201 is arranged on the circumferential side wall of the top of the melting furnace 2, and the flowing liquid pipe 202 is arranged on the circumferential side wall of the bottom of the melting furnace 2. The arranged charging pipe 201 is convenient for conveying batch into the melting furnace 2, and the arranged flowing liquid pipe 202 is convenient for discharging the molten high-temperature glass liquid after heating;

[0029] An electrode heating assembly. There are four groups of electrode heating assemblies. Among them, three groups of electrode heating assemblies are arranged at intervals from top to bottom on the furnace body of the melting furnace 2. The distance between the electrode tubes in each of the three groups of electrode heating assemblies arranged on the furnace body of the melting furnace 2 gradually decreases, and the number of electrode tubes gradually increases;

[0030] The electrode heating assembly located in the upper furnace body of the melting furnace 2 is the first-stage electrode group 3. Each electrode in the first-stage electrode group 3 is divided into three layers, and the distance between the electrodes in each layer is 30 cm. As a result, the number of electrode tubes in the first-stage electrode group 3 is the least among the four groups of electrode heating assemblies and is located at a certain distance below the charging pipe 201. When the batch is added into the melting furnace 2 through the charging pipe 201, the batch layer 7 in the area from above the first-stage electrode group 3 to the charging pipe 201 is at normal temperature, and the first-stage electrode group 3 can preheat the batch located at the first-stage electrode group 3 first, so that the batch here slowly decomposes and melts;

[0031] The electrode heating assembly located in the middle furnace body of the melting furnace 2 is the secondary electrode group 4. Each electrode in the secondary electrode group 4 is divided into five layers, and the distance between each layer of electrodes is 20 cm. As a result, the number of electrode tubes in the secondary electrode group 4 is more than that in the primary electrode group 3, and they are more densely distributed. After the batch material located at the primary electrode group 3 is preheated by the primary electrode group 3 and slowly decomposed and melted, when it continues to move down to the secondary electrode group 4, the batch material is further heated, decomposed, and melted, promoting the batch material to be heated, decomposed, and melted into the medium-temperature glass liquid layer 8 through the primary electrode group 3 and the secondary electrode group 4;

[0032] The electrode heating assembly located in the lower furnace body of the melting furnace 2 is the tertiary electrode group 5. Each electrode in the tertiary electrode group 5 is divided into seven layers, and the distance between each layer of electrodes is 10 cm. As a result, the number of electrode tubes in the tertiary electrode group 5 is more than that in the secondary electrode group 4, and they are more densely distributed; and another set of electrode heating assembly is arranged at the bottom of the melting furnace 2, and the electrode heating assembly located at the bottom of the melting furnace 2 is the quaternary electrode group 6. Each electrode in the quaternary electrode group 6 is arranged in a circular array and distributed in layers, and the distance between the inner and outer layer electrodes is 15 cm, promoting the inner bottom of the melting furnace 2 to be heated as well. Furthermore, the temperature of the lower region of the entire melting furnace 2 is the highest. After the batch material is heated, decomposed, and melted into the medium-temperature glass liquid layer 8 through the primary electrode group 3 and the secondary electrode group 4, the medium-temperature glass liquid layer 8 then moves down to the tertiary electrode group 5 and the quaternary electrode group 6 and is heated, decomposed, and melted into the high-temperature glass liquid layer 9, thus completing the full melting of the batch material; during the entire melting process of the batch material, the electrodes are used to heat, decompose, and melt the batch material in a hierarchical manner from top to bottom, enabling the full utilization of the heat released by the four groups of electrode heating assemblies, and the heat utilization efficiency can be increased by 30%-40%; and now, only 1.0±0.5 kWh of electricity is consumed per kilogram of glass smelted, which is less costly than the original flame furnace that consumed 0.33-0.35 cubic meters of gas per kilogram of glass smelted;

[0033] During the smelting process of the batch material, the batch material layer 7 located above the primary electrode group 3 is at room temperature. When continuous feeding causes the batch material to move down to the tertiary electrode group 5 and the quaternary electrode group 6 and be decomposed and melted into the high-temperature glass liquid layer 9 at high temperature, the high-temperature gas generated during the high-temperature decomposition and melting process will rise to the room-temperature batch material layer 7 at the top. When the high-temperature gas enters the room-temperature batch material layer 7 and encounters cold, the high-temperature gas will condense and adhere to the room-temperature batch material, and then move down with the batch material for heating and decomposition. As a result, no gas escapes from the melting furnace 2, and no auxiliary materials are added for melting in the all-electric melting furnace. Furthermore, no waste residue or waste material is generated during the entire process, which is more environmentally friendly.

[0034] The distance between the first-level electrode group 3, the second-level electrode group 4 and the third-level electrode group 5 is 15 cm, which prompts sufficient boundary areas to be maintained between the electrode groups of each level vertically arranged in the melting furnace 2, so that during the entire batch melting process, the raw materials in the corresponding layers can not only be separated into layers but also move down slowly in sequence, without the raw materials in the top layer directly mixing into the heating area in the bottom layer.

[0035] The above has introduced the present utility model in detail. The description of the specific embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A fully electric melting furnace for pharmaceutical glass, characterized in that: Including: A furnace foundation (1) and a melting furnace (2) arranged on the top of the furnace foundation (1); A charging pipe (201) and a flowing liquid pipe (202), the charging pipe (201) is arranged on the peripheral side wall at the top of the melting furnace (2), and the flowing liquid pipe (202) is arranged on the peripheral side wall at the bottom of the melting furnace (2); An electrode heating assembly, there are four groups of the electrode heating assemblies, three of which are arranged at intervals from top to bottom on the furnace body of the melting furnace (2), and the other group of the electrode heating assemblies is arranged at the bottom of the melting furnace (2). The spacing between the electrode tubes in each of the three electrode heating assemblies arranged on the furnace body of the melting furnace (2) gradually decreases, and the number of electrode tubes gradually increases.

2. The all-electric melting furnace for medicinal glass according to claim 1, wherein: The electrode heating assembly located on the upper furnace body of the melting furnace (2) is a first-level electrode group (3). Each electrode in the first-level electrode group (3) is divided into three layers, and the spacing between each layer of electrodes is 30 cm.

3. The all-electric melting furnace for medicinal glass according to claim 2, characterized in that: The electrode heating assembly located on the middle furnace body of the melting furnace (2) is a second-level electrode group (4). Each electrode in the second-level electrode group (4) is divided into five layers, and the spacing between each layer of electrodes is 20 cm.

4. A fully electric melting furnace for medicinal glass according to claim 3, characterized in that: The electrode heating assembly located on the lower furnace body of the melting furnace (2) is a third-level electrode group (5). Each electrode in the third-level electrode group (5) is divided into seven layers, and the spacing between each layer of electrodes is 10 cm.

5. The all-electric melting furnace for medicinal glass according to claim 4, wherein: The spacing between the first-level electrode group (3), the second-level electrode group (4) and the third-level electrode group (5) is 15 cm.

6. The all-electric melting furnace for pharmaceutical glass according to claim 1, characterized in that: The electrode heating assembly located at the bottom of the melting furnace (2) is a fourth-level electrode group (6). Each electrode in the fourth-level electrode group (6) is arranged in a circular array and distributed in layers, and the spacing between the inner and outer layer electrodes is 15 cm.

7. A fully electric melting furnace for medicinal glass according to claim 1, characterized in that: A furnace cover (203) is arranged on the top of the melting furnace (2).

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