Efficient multi-layer fused alumina zirconia brick casting sand mold
By designing a multi-layer zirconium corundum electric molten brick casting sand mold, the innovative structure and insulation heating system of brick body sand and riser sand are used to solve the problem of waste in the riser part, and the efficient casting of multiple electric molten bricks and the stability of brick quality is achieved.
Patent Information
- Application Number
- CN202421886740.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-06
AI Technical Summary
In the casting mold of traditional zirconium corundum electric molten bricks, the riser part needs to be cut and broken as raw material, resulting in increased manufacturing costs and low efficiency. How to improve casting efficiency and effectively utilize the riser part has become a concern.
The high-efficiency multi-layer zirconium corundum electric molten brick casting sand mold is adopted, including brick sand mold and riser sand mold. Multiple partitions are provided in the brick sand mold to separate it into multiple brick spaces. The material and liquid circulation channel design is combined with the insulation box and heating system to achieve uniform shrinkage and insulation of the material and liquid to ensure the density of the brick body, and multiple electric molten bricks are cast out from multiple layers.
By effectively utilizing the riser part, it reduces manufacturing costs, improves casting efficiency, ensures the stability of the brick body and the quality of bricks, and realizes the simultaneous casting of multiple electric molten bricks, reducing waste.
Smart Images
Figure CN223085051U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of casting sand molds, in particular to an efficient multi-layer zircon corundum fused cast brick casting sand mold. Background Art
[0002] Zircon corundum fused cast brick is a high-performance refractory material, which is mainly made of zircon corundum ore and other additives through an electrofusion process. Its main characteristics include high-temperature stability, excellent erosion resistance and wear resistance, and it is suitable for the inner lining of high-temperature industrial furnaces and metallurgical equipment. Zircon corundum fused cast brick has excellent refractory properties and chemical stability, can withstand extremely high temperatures and complex chemical environments, and is one of the important refractory materials in modern industry, widely used in industries such as steel, aluminum electrolysis, and glass.
[0003] In the field of casting sand mold brick making, traditional brick making uses one brick per mold. The sand mold includes a riser sand mold and a brick body sand mold. The riser functions like a funnel or the solution in the riser compensates for shrinkage in the brick body sand mold, making the brick in the brick body sand mold dense. In terms of the use of the final product, only the brick body is the usable part, and the riser needs to be cut off and broken and then used as raw material. This casting mode increases the manufacturing cost. How to improve the casting efficiency and effectively utilize the sand mold of the riser part has become a concern for those skilled in the art. For this reason, an efficient multi-layer zircon corundum fused cast brick casting sand mold is proposed to solve the above problems. Summary of the Utility Model
[0004] In order to make up for the above deficiencies, the utility model provides an efficient multi-layer zircon corundum fused cast brick casting sand mold, aiming to improve the problem that in the traditional sand mold when making the final product brick, only the brick body is the usable part, and the riser needs to be cut off and broken and then used as raw material, which leads to an increase in the manufacturing cost of the brick body.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: An efficient multi-layer zircon corundum fused cast brick casting sand mold includes a brick body sand mold and a riser sand mold. The brick body sand mold is a hollow structure with an open upper part, and its inner cavity constitutes the forming space of the fused cast brick. The riser sand mold is a hollow structure with an open upper part, and its inner cavity constitutes the shrinkage compensation space of the fused cast brick. The bottom plate of the riser sand mold is provided with a casting hole that penetrates up and down, and the casting hole is directly opposite to the upper opening of the brick body sand mold. An outwardly extending transition section is provided on the outer wall of the top of the brick body sand mold, and the bottom plate of the riser sand mold is placed on the transition section, and this transition section constitutes the enlarged part of the riser sand mold. A plurality of partitions are arranged at the center of the brick body sand mold, and the partitions divide the brick body sand mold into a plurality of independent brick forming spaces, and liquid material flow channels that communicate with each other are provided on the partitions of each brick forming space.
[0006] As a further description of the above technical solution:
[0007] The multi-layered zirconia corundum fused cast brick casting sand mold is placed inside a heat preservation box, and heat preservation sand is filled between the outer wall of the casting sand mold and the inner wall of the heat preservation box. A spiral air duct is provided inside the heat preservation sand. A heating return air box is fixedly connected to the right side of the heat preservation box. A return air duct is fixedly connected inside the heating return air box. A blower is fixed outside the return air duct, and a heating wire is fixedly connected to the output end of the blower.
[0008] As a further description of the above technical solution:
[0009] A plurality of exhaust holes for discharging high-temperature gas inside the sand mold are provided inside the partition board, and two adjacent exhaust holes are distributed on both sides of the liquid material flow passage.
[0010] As a further description of the above technical solution:
[0011] The partition board is composed of a plurality of longitudinal plate-shaped sand mold structures and transverse plate-shaped sand mold structures, and the transverse plate-shaped sand mold structures are vertically distributed on the longitudinal plate-shaped sand mold structures.
[0012] As a further description of the above technical solution:
[0013] The inner diameter of the liquid material flow passage is distributed in a decreasing manner from the middle to both ends, and the small holes at both ends are respectively communicated with adjacent brick-forming spaces.
[0014] As a further description of the above technical solution:
[0015] The heating wire is fixedly connected to the inside of the heating return air box, and the blower is fixedly connected to the inside of the heating return air box.
[0016] As a further description of the above technical solution:
[0017] The left side of the return air duct is fixedly connected to the right side of the heat preservation box, and the left side of the return air duct is communicated with the right side of the spiral air duct.
[0018] The utility model has the following beneficial effects:
[0019] 1. In the utility model, the riser sand mold of the present sand mold is provided with an enlarged part. In the feeding process, the liquid material will continuously feed to the periphery of the riser sand mold, so that the density of the liquid material around the riser sand mold meets the standard. After annealing, multiple standard fused cast bricks can be cut out separately, and the liquid material in the riser part is effectively utilized, reducing the manufacturing cost. At the same time, there are multiple brick-forming spaces in the brick sand mold of the present sand mold, and multiple fused cast bricks can be cast at one time. Compared with the traditional sand mold, the efficiency is significantly improved. Secondly, through the multiple horizontally distributed liquid material flow passages on the partition board in the technical solution, the liquid material feeding downward can be effectively buffered, so as to ensure the stability of brick formation in the brick sand mold, make the casting sand mold more stable during use, and improve the brick-forming quality.
[0020] 2. In the present utility model, the return air duct is heated by a heating wire, and the hot air is circulated in the spiral air duct in cooperation with a blower. At the same time, the return air duct can circulate the hot air, achieving heat preservation for the liquid material inside the riser sand mold and avoiding the insufficient density of the manufactured bricks caused by too fast annealing and cooling, which affects the use. Description of the Drawings
[0021] Figure 1 It is a schematic cross-sectional view of a high-efficiency multi-layer zircon corundum fused cast brick casting sand mold proposed by the present utility model;
[0022] Figure 2 It is a schematic structural view of the liquid material flow channel of a high-efficiency multi-layer zircon corundum fused cast brick casting sand mold proposed by the present utility model;
[0023] Legend:
[0024] 1. Heat preservation box; 2. Heat preservation sand; 3. Riser sand mold; 4. Brick body sand mold; 5. Liquid material connection channel; 6. Partition board; 61. Longitudinal plate-shaped sand mold structure; 62. Transverse plate-shaped sand mold structure; 7. Liquid material flow channel; 8. Exhaust hole; 9. Spiral air duct; 10. Heating return air box; 11. Return air duct; 12. Heating wire; 13. Blower; 14. Casting hole; 15. Transition section. Detailed Embodiment
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0026] Refer to Figure 1 - Figure 2, an embodiment provided by the present utility model: a high-efficiency multi-layer zirconia corundum fused cast brick casting sand mold, including a brick body sand mold 4 and a riser sand mold 3. The brick body sand mold 4 is a hollow structure with an open upper part, and its inner cavity forms the forming space of the fused cast brick. The riser sand mold 3 is a hollow structure with an open upper part, and its inner cavity forms the feeding space of the fused cast brick. The bottom plate of the riser sand mold 3 is provided with a casting hole 14 that penetrates up and down, and the casting hole 14 is directly opposite to the upper opening of the brick body sand mold 4. An outwardly extending transition section 15 is provided on the outer wall of the top of the brick body sand mold 4, and the bottom plate of the riser sand mold 3 is placed on the transition section 15. The transition section 15 constitutes an enlarged part of the riser sand mold 3. A plurality of partition plates 6 are arranged at the center of the brick body sand mold 4. The partition plates 6 divide the brick body sand mold 4 into a plurality of independent brick-forming spaces, and liquid material flow channels 7 that communicate with each other are provided on the partition plates 6 of each brick-forming space. The partition plate 6 is composed of a plurality of longitudinal plate-shaped sand mold structures 61 and transverse plate-shaped sand mold structures 62, and the transverse plate-shaped sand mold structures 62 are vertically distributed on the longitudinal plate-shaped sand mold structures 61. The inner diameter of the liquid material flow channel 7 decreases from the middle to both ends, and the small holes at both ends thereof are respectively communicated with adjacent brick-forming spaces.
[0027] Specifically, the riser sand mold 3 is used to facilitate pouring the liquid material into the brick body sand mold 4, which is much larger than the traditional riser. The brick body sand mold 4 is the outer shell of the sand mold. The liquid material communication channel 5 is used to ensure that the amount of liquid material in the two brick body sand molds 4 is the same. The partition plate 6 is a structure inside the brick body sand mold 4 for partitioning the brick-forming space, and is used for casting multiple bricks at the same time, and its material is a sand mold plate. At the same time, the setting of the partition plate 6 is determined by the number of bricks formed by casting in the brick body sand mold 4. When the number of brick-forming layers increases, the partition plate 6 will correspondingly increase the number of transverse plate-shaped sand mold structures 62. Similarly, the number of longitudinal plate-shaped sand mold structures 61 can also be increased corresponding to the number of brick body sand molds 4 to adapt to the casting of different numbers of bricks required. The liquid material flow channel 7 is used to ensure the mutual flow of the liquid material in each brick-forming space. Through the liquid material flow channel 7 with a thick middle and thin ends, it can ensure that the cross-section at the connection between the fused cast bricks after brick formation is reduced as much as possible, thereby facilitating the subsequent cutting and splitting of the fused cast bricks after brick formation into independent bricks.
[0028] Refer to Figure 1 - Figure 2, The multi-layered fused zirconia corundum brick casting sand mold is placed inside the heat preservation box 1, and heat preservation sand 2 is filled between the outer wall of the casting sand mold and the inner wall of the heat preservation box 1. A spiral air duct 9 is provided inside the heat preservation sand 2. The right side of the heat preservation box 1 is fixedly connected to a heating return air box 10. A return air duct 11 is fixedly connected inside the heating return air box 10. A blower 13 is fixedly connected to the outside of the return air duct 11. The output end of the blower 13 is fixedly connected to a heating wire 12. Multiple exhaust holes 8 for discharging the high-temperature gas inside the sand mold are provided inside the partition plate 6, and two adjacent exhaust holes 8 are distributed on both sides of the liquid material flow channel 7. During actual use, to reduce the number of partition plates, two brick sand molds can be placed side by side as the brick sand mold. The upper mouths of the two brick sand molds are within the coverage range of the casting hole. A liquid material communication channel 5 for connecting the brick-forming space is provided between two adjacent brick sand molds for the liquid material to flow through. The outside of the riser sand mold 3 is placed at the center of the spiral air duct 9. The outside of the brick sand mold 4 is sleeved inside the heat preservation sand 2. The outside of the heating wire 12 is fixedly connected inside the heating return air box 10. The outside of the blower 13 is fixedly connected inside the heating return air box 10. The left side of the return air duct 11 is fixedly connected to the right side of the heat preservation box 1, and the left side of the return air duct 11 is communicated with the right side of the spiral air duct 9.
[0029] Specifically, the heat preservation box 1 is a container for containing the heat preservation sand 2. The heat preservation sand 2 is used to keep the liquid material inside the riser sand mold 3 and the brick sand mold 4 warm. The spiral air duct 9 is used for circulating hot air to keep the riser sand mold 3 warm. Under the action of the heat preservation sand 2, it can ensure that the temperature inside the heat preservation box 1 is more stable. At the same time, the hot air caused by the high-temperature liquid material inside the casting sand mold is discharged through the exhaust holes 8. And the distribution of the exhaust holes 8 is staggered with the liquid material flow channel 7, so that when the sand mold is being cast, it will not affect the discharge of the air pressure generated by the high temperature inside the sand mold through the exhaust holes 8, avoiding damage to the casting sand mold. Through the liquid material communication channel 5, it can ensure that the liquid material for feeding and supplementing shrinkage inside two adjacent brick sand molds 4 is in the same state, making the brick formation inside the sand mold more stable. The heating return air box 10 is used to connect and protect the internal parts. The return air duct 11 is for realizing the hot air circulation. The heating wire 12 is an electric heating device for heating the air. The spiral air duct 9 is heated by the heated air, and then the heat preservation sand 2 outside the riser sand mold 3 is heated and kept at a suitable temperature to keep the liquid material inside the riser sand mold 3 warm. The blower 13 is to ensure the rapid circulation of the air inside the spiral air duct 9. The exhaust holes 8 are to discharge the gas generated by the high temperature to avoid affecting the quality of the bricks.
[0030] Working principle: When using this device, first lay a layer of bottom sand on the bottom of the insulation box 1, then place the casting sand mold on the bottom sand, and then fill the insulation sand 2 between the outer wall of the casting sand mold and the inner wall of the insulation box 1 until it is level with the top of the riser sand mold 3, and bury the sand mold structure of the spiral air duct 9 inside the insulation sand 2, and then control the heating wire 12 and the fan 13 to work, first preheat the spiral air duct 9, and then pour the molten electric fused brick liquid through the upper mouth of the riser sand mold 3, the liquid quickly spreads from the riser sand mold 3 and passes through the casting hole at the bottom of the riser sand mold 3, spreading to the brick body In the sand mold 4, under the action of the liquid flow channel 7 on the partition, the amount of liquid in each brick-forming space in the brick sand mold 4 increases synchronously, and the liquid spreads from the liquid flow channel 7 to each brick-forming space. At the same time, under the action of the liquid flow channel 7 on the horizontal partition, the spreading speed of the liquid is slowed down to prevent the liquid from directly impacting the inner wall of the brick sand mold 4 and causing damage to the brick sand mold 4. During the casting process, the liquid in the riser sand mold 3 continuously feeds the brick sand mold 4. Due to the expansion part of the riser sand mold 3, the liquid located in the center of the riser feeds downward and around at the same time. , thereby ensuring the density of the liquid around the brick body sand mold 4 and the riser sand mold 3 at the same time. The air generated in the process is discharged from the exhaust hole 8. When the liquid stops shrinkage compensation, annealing begins. In order to ensure that the density of the brick made by the liquid inside the riser sand mold 3 is the same as that inside the brick body sand mold 4, the riser sand mold 3 needs to be kept warm continuously. The air blown out by the fan 13 is heated by the heating wire 12 and then kept warm by the spiral air duct 9 for the riser sand mold 3, and then sucked back into the fan 13 from the return air duct 11, and the cycle is repeated. When annealing is completed, demoulding is carried out, and the brick body of the riser part is Due to the addition of the expansion part, the molten material shrinks around the riser during the casting process, and the riser sand mold 3 is also effectively insulated. The density of the brick body around the riser meets the brick making requirements. Therefore, a complete fused brick that meets the density requirements can be obtained by cutting the wall around the riser. Multiple fused bricks with density that meet the requirements can be cut out according to the specified size to avoid waste. Compared with the fused bricks cast by traditional sand molds, multiple fused bricks can be obtained through the brick sand mold in one casting, and multiple fused bricks can be obtained from the riser by cutting, and the casting efficiency is significantly improved.
[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An efficient multi-layer zirconia corundum fused cast brick casting sand mold, comprising a brick body sand mold (4) and a riser sand mold (3). The brick body sand mold (4) is a hollow structure with an open upper part, and its inner cavity forms the molding space for the fused cast brick. It is characterized in that: The riser sand mold (3) is a hollow structure with an upper opening, and its inner cavity forms a feeding space for the fused-cast brick. The bottom plate of the riser sand mold (3) is provided with a casting hole (14) that penetrates up and down. The casting hole (14) is directly opposite to the upper opening of the brick sand mold (4). The outer wall of the top of the brick sand mold (4) is provided with a transition section (15) that extends outward. The bottom plate of the riser sand mold (3) is placed on the transition section (15), and the transition section (15) forms an enlarged part of the riser sand mold (3). A plurality of partition plates (6) are arranged in the center of the brick sand mold (4), and the partition plates (6) divide the brick sand mold (4) into a plurality of independent brick-forming spaces. Liquid material flow channels (7) that communicate with each other are formed on the partition plates (6) of each brick-forming space.
2. The high-efficiency multi-layer zircon corundum fused cast brick casting sand mold according to claim 1, wherein: The multi-layer fused-cast zirconia corundum brick casting sand mold is placed inside the heat preservation box (1), and heat preservation sand (2) is filled between the outer wall of the casting sand mold and the inner wall of the heat preservation box (1). A spiral air duct (9) is formed inside the heat preservation sand (2). A heating return air box (10) is fixedly connected to the right side of the heat preservation box (1). A return air pipe (11) is fixedly connected inside the heating return air box (10). A blower (13) is fixedly connected to the outside of the return air pipe (11). The output end of the blower (13) is fixedly connected to a heating wire (12).
3. An efficient multi-layer zircon corundum fused cast brick casting sand mold according to claim 2, characterized in that: A plurality of exhaust holes (8) for discharging high-temperature gas inside the sand mold are formed inside the partition plate (6), and two adjacent exhaust holes (8) are distributed on both sides of the liquid material flow channel (7).
4. An efficient multi-layer zircon corundum fused cast brick casting sand mold according to claim 1, characterized in that: The partition plate (6) is composed of a plurality of longitudinal plate-shaped sand mold structures (61) and transverse plate-shaped sand mold structures (62), and the transverse plate-shaped sand mold structures (62) are vertically distributed on the longitudinal plate-shaped sand mold structures (61).
5. An efficient multi-layer zircon corundum fused cast brick casting sand mold according to claim 1, characterized in that: The inner diameter of the liquid material flow channel (7) decreases from the middle to both ends, and the small holes at both ends communicate with adjacent brick-forming spaces respectively.
6. An efficient multi-layer zirconia corundum fused cast brick casting sand mold according to claim 2, characterized in that: The outside of the heating wire (12) is fixedly connected inside the heating return air box (10), and the outside of the blower (13) is fixedly connected inside the heating return air box (10).
7. An efficient multi-layer zircon corundum fused cast brick casting sand mold according to claim 2, characterized in that: The left side of the return air pipe (11) is fixedly connected to the right side of the heat preservation box (1), and the left side of the return air pipe (11) is communicated with the right side of the spiral air duct (9).