Fused alumina zirconia fused brick sand mold for dead head brick forming

Abstract

The utility model relates to the field of fused brick sand molds, and discloses a fused zirconia corundum fused brick sand mold for riser brick forming, which comprises a brick body sand mold and a riser sand mold, the brick body sand mold is of a hollow structure with an opening at the upper part, an inner cavity of the brick body sand mold forms a forming space of a fused brick, the riser sand mold is of a hollow structure with an opening at the upper part, and an inner cavity of the riser sand mold forms a feeding space of the fused brick. A vertically-through casting hole is formed in a bottom plate of the riser sand mold and right faces an upper opening of the brick body sand mold, a transition section extending outwards is arranged 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. According to the utility model, the feed liquid can be continuously fed towards the periphery of the mold riser sand mold, so that the density of the feed liquid around the mold riser sand mold reaches the standard, a plurality of standard fused bricks can be independently cut after annealing, the feed liquid at the riser part is effectively utilized, the manufacturing cost is reduced, the feed liquid can be reasonably utilized, resources are saved, and the production efficiency is improved. The economic cost is reduced, and the production capacity is increased.

Description

Technical Field

[0001] The utility model relates to the field of fused-cast brick sand molds, in particular to a zirconia corundum fused-cast brick sand mold with a riser forming a brick. Background Art

[0002] Zirconia corundum fused-cast brick is a high-performance refractory material, mainly made from zirconia 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. Zirconia 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 final product use, 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. To solve the above problems, a zirconia corundum fused-cast brick sand mold with a riser forming a brick is proposed. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a zirconia corundum fused-cast brick sand mold with a riser forming a brick, aiming to improve the problem that in the traditional sand mold when making bricks for 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, which increases the manufacturing cost of the brick body.

[0005] To achieve the above object, the utility model adopts the following technical scheme: A zirconia corundum fused-cast brick sand mold with a riser forming a brick 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 forms the forming space for the fused-cast brick. The riser sand mold is a hollow structure with an open upper part, and its inner cavity forms the shrinkage compensation space for 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. The outer wall of the top of the brick body sand mold is provided with a transition section extending outwards. The bottom plate of the riser sand mold is placed on the transition section, and this part forms the enlarged part of the riser sand mold, and the enlarged part forms the brick forming space of the riser.

[0006] As a further description of the above technical solution:

[0007] The zirconia corundum fused cast brick sand mold formed by the riser is placed inside the heat preservation box, and heat preservation sand is filled between the outer wall of the fused cast brick sand mold and the inner wall of the heat preservation box. A blower is arranged outside the heat preservation box. The input end of the blower is fixedly connected with an input pipe. The end of the input pipe away from the blower is fixedly connected with a housing. A communicating pipe is fixedly connected to the outside of the housing. An outer shell is arranged inside the communicating pipe, and a filter screen is arranged inside the outer shell. An intake pipe is fixedly connected to the inside of the housing, and a plurality of heating wires are arranged inside the housing. The output end of the blower is fixedly connected with an output pipe.

[0008] As a further description of the above technical solution:

[0009] The end of the communicating pipe away from the housing is fixedly connected to the outside of the heat preservation box.

[0010] As a further description of the above technical solution:

[0011] The end of the output pipe away from the blower is fixedly connected to the outside of the heat preservation box.

[0012] As a further description of the above technical solution:

[0013] A plurality of exhaust holes for discharging high-temperature gas inside the sand mold are opened inside the partition board, and two adjacent exhaust holes are distributed on both sides of the liquid material flow channel.

[0014] As a further description of the above technical solution:

[0015] The partition board is a plate-shaped sand mold structure and is longitudinally distributed inside the hollow structure of the brick sand mold.

[0016] As a further description of the above technical solution:

[0017] The inner diameter of the liquid material flow channel is distributed in a decreasing manner from the middle to both ends, and the small holes at both ends are respectively communicated with the adjacent brick-forming spaces.

[0018] As a further description of the above technical solution:

[0019] A partition board is arranged inside the hollow structure of the brick sand mold. The partition board divides the hollow structure inside the brick sand mold into two independent brick-forming spaces, and liquid material flow channels communicating with each other are opened on the partition boards of each brick-forming space.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the present utility model, the material liquid is injected into the internal part of the riser sand mold. The material liquid uniformly feeds and compensates to the internal part of the brick sand mold through the material liquid flow passage and the material liquid communication passage on the partition plate. Secondly, the riser sand mold is provided with an enlarged part. In this way, during the feeding and compensation process, the material liquid will continuously feed and compensate towards the periphery of the riser sand mold, so that the density of the material liquid around the riser sand mold meets the standard. After annealing, multiple standard fused cast bricks can be cut out separately. The material liquid in the riser part is effectively utilized, reducing the manufacturing cost, realizing the reasonable utilization of the material liquid, saving resources, reducing the economic cost, and increasing the production volume.

[0022] 2. In the present utility model, the heating wire inside the heating shell is heated. The heating wire heats the air. The fan is started. The fan can extract the heated air inside the shell and then transport it to the internal part of the heat preservation sand through the output pipe, and then heat-preserve the riser sand mold. The heated air returns to the inside of the shell through the connecting pipe to continue heating, realizing the continuous heat preservation of the riser sand mold, enabling the material liquid in the riser sand mold to slowly anneal and cool, and preventing cracks from being generated due to the too-fast annealing and cooling of the material liquid in the riser sand mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is the overall structural schematic diagram of a fused cast zirconia corundum brick sand mold with a riser forming bricks proposed by the present utility model;

[0024] Figure 2 FIG. is the structural schematic diagram of the partition plate of a fused cast zirconia corundum brick sand mold with a riser forming bricks proposed by the present utility model;

[0025] Figure 3 FIG. is the structural schematic diagram of the heating wire of a fused cast zirconia corundum brick sand mold with a riser forming bricks proposed by the present utility model.

[0026] LEGEND DESCRIPTION:

[0027] 1. Heat preservation box; 2. Heat preservation sand; 3. Riser sand mold; 4. Material liquid communication passage; 5. Partition plate; 6. Material liquid flow passage; 7. Exhaust hole; 8. Fan; 9. Input pipe; 10. Shell; 11. Connecting pipe; 12. Outer shell; 13. Filter screen; 14. Air inlet pipe; 15. Output pipe; 16. Heating wire; 17. Brick sand mold; 18. Casting hole; 19. Transition section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0029] Refer to Figures 1 - 3, an embodiment provided by the present utility model: a zirconia corundum fused cast brick sand mold for a riser to form a brick, including a brick body sand mold 17 and a riser sand mold 3. The brick body sand mold 17 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 3 is a hollow structure with an open upper part, and its inner cavity constitutes the feeding space of the fused cast brick. A casting hole 18 that penetrates up and down is opened on the bottom plate of the riser sand mold 3, and the casting hole 18 is directly opposite to the upper opening of the brick body sand mold 4. An outwardly extending transition section 19 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 19, and this part constitutes the enlarged part of the riser sand mold 3. A partition 5 is provided at the center of the brick body sand mold 17, and the partition 5 divides the brick body sand mold 17 into two independent brick-forming spaces. Liquid material flow channels 6 that communicate with each other are opened on the partition 5 of each brick-forming space. Multiple exhaust holes 7 for discharging high-temperature gas inside the sand mold are opened inside the partition 5, and two adjacent exhaust holes 7 are distributed on both sides of the liquid material flow channel 6. The partition 5 is a plate-shaped sand mold structure, and the partition 5 is longitudinally distributed inside the hollow structure of the brick body sand mold 17. The inner diameter of the liquid material flow channel 6 decreases from the middle to both ends, and the small holes at both ends thereof are respectively communicated with the adjacent brick-forming spaces. A liquid material communication channel 4 for liquid material flow is provided between two adjacent brick body sand molds for communicating the brick-forming spaces.

[0030] Specifically, the riser sand mold 3 is used to facilitate the injection of the molten liquid material into the sand mold. The liquid material will shrink downward and pass through the casting hole 17 into the brick body sand mold 4. The partition 5 divides the brick body sand mold 17 into two parts. The liquid material communication channel 4 makes the liquid material that shrinks in the brick body sand mold 17 evenly fill the inside of the brick body sand mold 17. At the same time, the liquid material that enters the inside of the brick body sand mold 17 will shrink again and pass through the liquid material flow channel 6 inside the partition 5 and enter each brick-forming space. The exhaust hole 7 is used to discharge the gas pressure generated by the high temperature when the high-temperature liquid material enters the sand mold. The partition 5 is a structure inside the brick body sand mold 17 for separating the brick-forming spaces, 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 5 is determined according to the number of bricks cast by the brick body sand mold 17. During actual use, to reduce the number of partitions 5, two brick body sand molds 17 can be placed side by side as the brick body sand mold 17, and the upper openings of the two brick body sand molds 17 are within the coverage range of the casting hole 18 to adapt to the casting of different numbers of bricks as required.

[0031] Refer to Figures 1 - 3, the zirconium corundum fused cast brick sand mold formed by the riser is placed inside the heat preservation box 1, and heat preservation sand 2 is filled between the outer wall of the fused cast brick sand mold and the inner wall of the heat preservation box 1. A blower 8 is arranged outside the heat preservation box 1. The input end of the blower 8 is fixedly connected with an input pipe 9. The end of the input pipe 9 far away from the blower 8 is fixedly connected with a housing 10. A communicating pipe 11 is fixedly connected to the outside of the housing 10. A filter housing 12 is arranged inside the communicating pipe 11, and a filter screen 13 is arranged inside the filter housing 12. An intake pipe 14 is fixedly connected inside the housing 10. A plurality of heating wires 16 are arranged inside the housing 10. The output end of the blower 8 is fixedly connected with an output pipe 15. The end of the communicating pipe 11 far away from the housing 10 is fixedly connected to the outside of the heat preservation box 1. The end of the output pipe 15 far away from the blower 8 is fixedly connected to the outside of the heat preservation box 1.

[0032] Specifically, the blower 8 is used to extract the hot air inside the housing 10. The input pipe 9 is used to connect the blower 8 and the housing 10. The housing 10 is used to stably install other components. The communicating pipe 11 is used to connect the heat preservation box 1 and the housing 10. The filter housing 12 is used to install the filter screen 13. The filter screen 13 is used to intercept the grit brought by the hot air circulating back to the housing 10. The intake pipe 14 connects the housing 10 and the outside world. The heating wires 16 can heat the air. The output pipe 15 is used to transport the hot air extracted by the blower 8 into the heat preservation box 1. The heated air enters the channels inside the heat preservation sand 2 to circulate, so as to heat the heat preservation sand 2 around the riser sand mold 3, so that the heat preservation sand 2 can continuously keep the riser sand mold 3 of the sand mold warm.

[0033] Working principle: When using this device, first spread a layer of bottom sand on the bottom of the insulation box 1, then place the fused brick sand mold on the bottom sand. Subsequently, fill the space between the outer wall of the fused brick sand mold and the inner wall of the insulation box 1 with insulation sand 2 until it is flush with the top of the riser sand mold 3. Then pour the molten fused brick material liquid through the upper opening of the riser sand mold 3. The material liquid quickly spreads within the riser sand mold 3 and passes through the casting hole 18 at the bottom of the riser sand mold 3, spreading to the brick body sand mold 17. Under the action of the material liquid flow channel 6 on the partition 5, the amount of material liquid in each brick-forming space within the brick body sand mold 17 increases synchronously. During the casting process, due to the enlarged part added to the riser sand mold 3, the material liquid at the center of the riser simultaneously shrinks downward and radially, enabling the material liquid around the riser to be in a continuous shrinkage state, so that the density of the material liquid around the riser reaches the usage standard. When the material liquid stops shrinking, annealing begins. To ensure that the density of the bricks formed by the material liquid inside the riser sand mold 3 is the same as that inside the brick body sand mold 17 and to avoid brick breakage caused by excessive temperature difference, first activate the heating wire 16 inside the heating housing 10. The heating wire 16 heats the air. Subsequently, activate the blower 8. The blower 8 can extract the heated air inside the housing 10 and then transport it through the output pipe 15 to the inside of the insulation sand for heat preservation of the top sand mold 3. The heated air then returns to the inside of the housing 10 through the connecting pipe 11 for continuous heating. A filter screen 13 is provided inside the connecting pipe 11 to filter the air circulating back to the inside of the housing 10, intercepting the sand and gravel brought back by the hot air. This effectively insulates the riser sand mold 3, and the density of the bricks around the riser meets the brick-forming requirements. Therefore, by cutting the peripheral wall of the riser, complete fused bricks meeting the density requirements can be obtained. Multiple fused bricks meeting the density standards can be cut according to the specified dimensions, avoiding waste. Compared with the fused bricks cast by traditional sand molds, multiple fused bricks can be obtained through the brick body sand mold in one casting, and at the same time, multiple fused bricks can be obtained from the riser through cutting, significantly improving the casting efficiency.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A zirconia corundum fused cast brick sand mold for riser brick formation, comprising a brick body sand mold (17) and a riser sand mold (3). The brick body sand mold (17) is a hollow structure with an upper opening, and its inner cavity forms a 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 (18) that penetrates up and down. The casting hole (18) is directly opposite to the upper opening of the brick sand mold (17). An outwardly extending transition section (19) is provided on the outer wall of the top of the brick sand mold (17), and the bottom plate of the riser sand mold (3) is placed on the transition section (19). A partition plate (5) is arranged in the hollow structure of the brick sand mold (17). The partition plate (5) divides the hollow structure in the brick sand mold (17) into two independent brick-forming spaces, and liquid material flow channels (6) that communicate with each other are formed on the partition plate (5) of each brick-forming space.

2. The zirconia corundum fused cast brick sand mold for making riser bricks according to claim 1, characterized in that: The zircon corundum fused-cast brick sand mold for forming the riser brick is placed inside a heat preservation box (1), and heat preservation sand (2) is filled between the outer wall of the fused-cast brick sand mold and the inner wall of the heat preservation box (1). A blower (8) is arranged on the outer side of the heat preservation box (1). The input end of the blower (8) is fixedly connected with an input pipe (9). One end of the input pipe (9) far away from the blower (8) is fixedly connected with a housing (10). A communicating pipe (11) is fixedly connected to the outer side of the housing (10). A filter (13) is arranged inside an outer shell (12) arranged inside the communicating pipe (11). An air inlet pipe (14) is fixedly connected inside the housing (10). A plurality of electric heating wires (16) are arranged inside the housing (10). The output end of the blower (8) is fixedly connected with an output pipe (15).

3. The zirconia corundum fused cast brick sand mold for riser brick making according to claim 2, characterized in that: One end of the communicating pipe (11) far away from the housing (10) is fixedly connected to the outer side of the heat preservation box (1).

4. The zirconia corundum fused cast brick sand mold for riser brick making according to claim 2, characterized in that: One end of the output pipe (15) far away from the blower (8) is fixedly connected to the outer side of the heat preservation box (1).

5. A zirconia corundum fused cast brick sand mold for making riser bricks, characterized in that: A plurality of exhaust holes (7) for discharging high-temperature gas inside the sand mold are formed inside the partition plate (5), and two adjacent exhaust holes (7) are distributed on both sides of the liquid material flow channel (6).

6. The zirconia corundum fused-cast brick sand mold for making riser bricks according to claim 1, characterized in that: The partition plate (5) is a plate-shaped sand mold structure, and the partition plate (5) is longitudinally distributed in the hollow structure of the brick sand mold (17).

7. The zirconia corundum fused cast brick sand mold for riser brick making according to claim 1, wherein: The inner diameter of the liquid material flow channel (6) decreases from the middle to both ends, and the small holes at both ends thereof are respectively communicated with the adjacent brick-forming spaces.

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