CN214133847U - Automatic molten iron filling and purifying system for large-scale wind power base castings - Google Patents
Automatic molten iron filling and purifying system for large-scale wind power base castings Download PDFInfo
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- CN214133847U CN214133847U CN202023039718.1U CN202023039718U CN214133847U CN 214133847 U CN214133847 U CN 214133847U CN 202023039718 U CN202023039718 U CN 202023039718U CN 214133847 U CN214133847 U CN 214133847U
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Abstract
A molten iron automatic mold filling and purifying system for large wind power base castings comprises a casting sand mold, wherein the casting sand mold comprises molding sand, a cavity and a pouring runner, and the cavity and the pouring runner are surrounded by the molding sand; the pouring channel is communicated with the cavity. The molten iron temporary storage cavity is formed by surrounding molding sand; the molten iron temporary storage cavity is arranged above the highest position of the cavity; the molten iron temporary storage cavity is communicated with the cavity through a molten iron runner; the main body of the molten iron temporary storage cavity is in a circular truncated cone shape, the small bottom of the circular truncated cone shape is arranged above, and the large bottom of the circular truncated cone shape is arranged below; the bottom surface of the molten iron temporary storage cavity is in a downward concave spherical crown shape; the outer edge of the bottom surface of the molten iron temporary storage cavity is connected with the bottom edge of the main body of the molten iron temporary storage cavity; a molten iron outlet of the molten iron temporary storage cavity is arranged on the bottom edge of the main body of the molten iron temporary storage cavity; the top surface of the main body of the molten iron temporary storage cavity is exposed out of the top surface of the casting sand mold. The technical scheme can meet the quality requirement of the casting and reduce the safety risk of the operation of workers.
Description
Technical Field
The utility model relates to a pouring of large-scale wind-powered electricity generation base is used, mainly to large-scale wind-powered electricity generation base production process, the economic benefits and social benefits design of the automatic and improvement molten iron purity degree of molten iron mold filling mode.
Background
With the development of commercial wind turbine generators on the sea becoming mature, the large-scale wind turbine generators are the mainstream development trend in the industry. The casting applied to wind power generation also needs to be developed towards large volume and light weight, and the quality requirement is higher and higher.
On the other hand, enterprises serving as responsibility units of safety bodies create working environments, safe tools and equipment for safety production, and safe production processes and technologies are necessary work, so that the safety production of the enterprises can be guaranteed.
Therefore, a method for ensuring smooth molten iron filling and automatic purification in the pouring process of large-scale wind power base products is needed; the molten iron purity can be improved under the condition that no operator needs to additionally work, and scum is prevented from remaining in the cavity.
Disclosure of Invention
In order to meet the technical requirements, the utility model provides an automatic molten iron mold filling and purifying system for large-scale wind power base castings, which comprises a casting sand mold, wherein the casting sand mold comprises molding sand, a cavity and a pouring channel, and the cavity and the pouring channel are enclosed by the molding sand; the pouring channel is communicated with the cavity. The molten iron temporary storage cavity is formed by surrounding molding sand; the molten iron temporary storage cavity is arranged above the highest position of the cavity; the molten iron temporary storage cavity is communicated with the cavity through a molten iron runner; the main body of the molten iron temporary storage cavity is in a circular truncated cone shape, the small bottom of the circular truncated cone shape is arranged above, and the big bottom of the circular truncated cone shape is arranged below (so that the mold stripping is facilitated);
the bottom surface of the molten iron temporary storage cavity is in a downward concave spherical crown shape; the outer edge of the bottom surface of the molten iron temporary storage cavity is connected with the bottom edge of the main body of the molten iron temporary storage cavity; a molten iron outlet of the molten iron temporary storage cavity is arranged on the bottom edge of the main body of the molten iron temporary storage cavity; the top surface of the main body of the molten iron temporary storage cavity is exposed out of the top surface of the casting sand mold.
Further, the cavity comprises a cavity main body corresponding to the casting main body and a cavity bulge corresponding to the bulge part on the top surface of the casting main body, and the cavity main body is communicated with the cavity bulge; the cavity bulge part is connected with an exhaust port through an exhaust pipe;
the communication position between the molten iron temporary storage cavity and the cavity main body is at the highest position beside the cavity bulge.
The advantages and beneficial effects are that:
1. the technical scheme can automatically fill the structure at the highest position of the base with molten iron, does not need to add additional operation of a secondary casting process, and avoids the defect of shrinkage porosity of products.
2. According to the technical scheme, scum in the molten iron can be discharged, the purity of the molten iron is ensured, and the product quality is ensured.
3. The technical scheme can reduce the workload of high-risk operation of personnel and improve the production safety.
Drawings
FIG. 1 is a schematic view of a sand mold after being formed by the system of the present embodiment;
FIG. 2 is a schematic view of the model wood of the system of this example (wood assembly view);
FIG. 3 is a schematic view of a wood type molten iron temporary storage cavity of the system of the present embodiment;
FIG. 4 is a schematic view of a bottom sand mold of the molten iron temporary storage cavity;
FIG. 5 is a schematic diagram of a wood pattern for making a bottom sand mold of a molten iron temporary storage cavity;
the arrows in fig. 1 indicate the flow direction of molten iron;
in the figure: the casting mould comprises a mould cavity 1, a molten iron temporary storage cavity 2, a molten iron runner 3, a main body 4 of the molten iron temporary storage cavity, a bottom surface 5 of the molten iron temporary storage cavity, a mould cavity main body 6, a mould cavity bulge 7, a casting wood mould 8, a wood mould 9 of the molten iron temporary storage cavity, a ceramic tube 10 for manufacturing the molten iron runner, a bottom surface sand mould 11 of the molten iron temporary storage cavity, a wood mould 12 of the main body of the molten iron temporary storage cavity and a wood mould 13.
Detailed Description
The following description will be given by taking the automatic molten iron filling and purifying system applied to a large-scale wind power base as an example with reference to the accompanying drawings:
an automatic molten iron filling and purifying system for large wind power base castings comprises a casting sand mold. The casting sand mold comprises molding sand, a cavity 1 and a pouring channel, wherein the cavity 1 is formed by the molding sand in a surrounding mode; the pouring channel is communicated with the cavity 1.
Referring to fig. 1, the casting sand mold also comprises a molten iron temporary storage cavity 2, wherein the molten iron temporary storage cavity 2 is formed by surrounding molding sand; the molten iron temporary storage cavity 2 is arranged above the highest position of the cavity 1; the molten iron temporary storage cavity 2 is communicated with the cavity 1 through a molten iron runner 3; the main body 4 of the molten iron temporary storage cavity is in a circular truncated cone shape, the small bottom of the circular truncated cone shape is arranged above, and the big bottom of the circular truncated cone shape is arranged below;
the bottom surface 5 of the molten iron temporary storage cavity is in a downward concave spherical crown shape; the outer edge of the bottom surface 5 of the molten iron temporary storage cavity is connected with the bottom edge of the main body 4 of the molten iron temporary storage cavity; the molten iron outlet of the molten iron temporary storage cavity 2 is arranged on the bottom edge of the main body 4 of the molten iron temporary storage cavity; the top surface of the main body 4 of the molten iron temporary storage cavity is exposed out of the top surface of the casting sand mold.
The cavity 1 comprises a cavity main body 6 corresponding to the casting main body and a cavity bulge part 7 corresponding to the bulge part on the top surface of the casting main body, and the cavity main body 6 is communicated with the cavity bulge part 7; the cavity bulge part 7 is connected with an exhaust port through an exhaust pipe;
the communication position between the molten iron temporary storage cavity 2 and the cavity body 6 is the highest position beside the cavity bulge part 7.
In this example, the shape of the large wind power base casting corresponds to the shape of the cavity. The cavity at the position of the two lifting lugs (the cavity bulge) of the casting is smaller and higher, so that when molten iron is poured, the molten iron filling degree is relatively insufficient, and the molten iron is retracted in the cooling process, a riser is required to be arranged at the position, and the molten iron is poured again. Because the amount of the post-cast molten iron is small, a residue filtering device cannot be specially arranged during operation, and the possibility that slag enters a cavity is high, so that the quality hidden trouble is brought.
In this case, referring to arrows in fig. 1, molten iron is poured in a forward direction into the molten iron temporary storage cavity 2 during casting. After the pouring action is finished, the stored molten iron is replenished to a high position of a casting cavity (a cavity of a lifting lug of the casting) by virtue of the gravity of the molten iron through the height difference, and scum in the molten iron is concentrated and floats in the molten iron temporary storage cavity 2.
The technical scheme can ensure smooth molten iron filling and molten iron purification in the pouring process of large-scale wind power base products. The mold filling process has the advantages that the areas (such as the mold cavities at the lug bosses, the lifting lugs and the like) at the highest positions in the mold cavities are completely filled, and the defect of shrinkage porosity or insufficient pouring is reduced; and under the condition that no operator works additionally, the purity of the molten iron is improved, and scum is prevented from remaining in the cavity.
When the system is realized, the cavity 1 of the casting is made of molding sand and a wood mold, and the manufacture of the molten iron temporary storage cavity 2 needs to be redesigned. Referring to FIGS. 3-5:
since the bottom surface 5 of the molten iron temporary storage cavity has a special shape, the wood mold shown in fig. 5 is used, and the sand mold 11 on the bottom surface of the molten iron temporary storage cavity shown in fig. 4 is supported by filling the molding sand in the hollow of the wood mold and solidifying and demolding. A bottom sand mold is placed on the surface of a casting wood mold 8 (the sand mold is integrated with molding sand outside a cavity), a wood mold 12 (shown in figure 3) of a main body of a molten iron temporary storage cavity is placed on the bottom 5 of the molten iron temporary storage cavity made of the bottom sand mold, meanwhile, a ceramic tube 10 for making a molten iron runner is placed, and then sand is discharged and solidified. Finally, taking out each wood model to obtain the sand mold shown in figure 1.
The principle and the manufacturing process of the scheme are described as follows: firstly, as shown in fig. 2, the forming wood model of the molten iron temporary storage cavity 2 is combined with the cavity wood model structure of the wind power casting. After the build is ejected, as shown in FIGS. 1 and 2.
The technical scheme is the automatic device which can meet the quality requirement of castings and reduce the safety risk of the operation of workers.
Claims (2)
1. A molten iron automatic mold filling and purifying system for large wind power base castings comprises a casting sand mold, wherein the casting sand mold comprises molding sand, a cavity and a pouring runner, and the cavity and the pouring runner are surrounded by the molding sand; the pouring runner is communicated with the die cavity, and is characterized by also comprising a molten iron temporary storage cavity which is surrounded by molding sand; the molten iron temporary storage cavity is arranged above the highest position of the cavity; the molten iron temporary storage cavity is communicated with the cavity through a molten iron runner; the main body of the molten iron temporary storage cavity is in a circular truncated cone shape, the small bottom of the circular truncated cone shape is arranged above, and the large bottom of the circular truncated cone shape is arranged below;
the bottom surface of the molten iron temporary storage cavity is in a downward concave spherical crown shape; the outer edge of the bottom surface of the molten iron temporary storage cavity is connected with the bottom edge of the main body of the molten iron temporary storage cavity; a molten iron outlet of the molten iron temporary storage cavity is arranged on the bottom edge of the main body of the molten iron temporary storage cavity; the top surface of the main body of the molten iron temporary storage cavity is exposed out of the top surface of the casting sand mold.
2. The system for automatically filling and purifying molten iron of a large-scale wind power base casting according to claim 1, wherein the cavity comprises a cavity body corresponding to the casting body and a cavity protrusion corresponding to a protrusion part on the top surface of the casting body, and the cavity body is communicated with the cavity protrusion; the cavity bulge part is connected with an exhaust port through an exhaust pipe;
the communication position between the molten iron temporary storage cavity and the cavity main body is at the highest position beside the cavity bulge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023039718.1U CN214133847U (en) | 2020-12-17 | 2020-12-17 | Automatic molten iron filling and purifying system for large-scale wind power base castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023039718.1U CN214133847U (en) | 2020-12-17 | 2020-12-17 | Automatic molten iron filling and purifying system for large-scale wind power base castings |
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| Publication Number | Publication Date |
|---|---|
| CN214133847U true CN214133847U (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023039718.1U Active CN214133847U (en) | 2020-12-17 | 2020-12-17 | Automatic molten iron filling and purifying system for large-scale wind power base castings |
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| Country | Link |
|---|---|
| CN (1) | CN214133847U (en) |
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2020
- 2020-12-17 CN CN202023039718.1U patent/CN214133847U/en active Active
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