Molten iron filtering device

Abstract

This utility model discloses an iron filtration device, including a first filter box, a second filter box, and a filter screen. The first and second filter boxes are fixed together by bolts, and their vertical connection forms an inlet and a filtration cavity. The filter screen is disposed within the filtration cavity. The outer wall of the filter screen and the inner wall of the filtration cavity form a filtration channel, which is arranged in a spiral structure. Therefore, the use of a circular filter screen structure improves the filtration capacity of the molten iron, reduces the space occupied by the filtration device, and the outside-to-inside filtration method combined with the spiral channel design can evenly disperse the impact force of the molten iron on the outer wall of the filter screen, effectively preventing damage and significantly extending its service life.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical casting, and in particular to an iron molten metal filtration device. Background Technology

[0002] As the demand for wind turbine main units gradually increases and production volume rises, the quality and size of castings are becoming larger and larger. During the production process, it is necessary to improve the purity of molten iron, reduce impurities and oxide slag from various materials from entering the castings, and improve product quality.

[0003] Existing technologies typically employ square filter boxes, which contain multiple square filter discs. Filtration is carried out from top to bottom or bottom to top. However, due to the weight of molten iron, the filter discs are prone to breakage under gravity, requiring regular replacement. This process is cumbersome, time-consuming, and labor-intensive. Furthermore, because square filter discs have limited filtration capacity, more discs are needed to process the same volume of molten iron, resulting in a larger overall filtration device that occupies a significant amount of installation space. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, one objective of this utility model is to provide an iron filtration device that adopts a circular filter screen structure, which improves the filtration capacity of molten iron, reduces the space occupied by the filter device, and the filtration method from the outside to the inside combined with the spiral channel design can also evenly disperse the impact force of molten iron on the outer wall of the filter screen, effectively prevent its damage, and significantly extend its service life.

[0006] To achieve the above objectives, the first aspect of this utility model provides an iron molten metal filtration device, comprising a first filter box, a second filter box, and a filter screen. The first filter box and the second filter box are fixed together by bolts, and the first filter box and the second filter box, after being joined vertically, form an inlet and a filtration cavity. The filter screen is disposed within the filtration cavity. The outer wall of the filter screen and the inner wall of the filtration cavity form a filtration channel, and the filtration channel is arranged in a spiral structure.

[0007] In addition, the molten iron filtration device proposed above according to this utility model may also have the following additional technical features:

[0008] Specifically, the filter screen has a hollow cylindrical structure.

[0009] Specifically, the first filter box and the second filter box are arranged in a mirror image, and the center of the first filter box and the second filter box are respectively provided with through holes.

[0010] Specifically, the first filter box or the second filter box is mounted on the support.

[0011] Compared with the prior art, the present invention has the following advantages: the use of a circular cross-section filter screen improves the filtration performance; compared with a square filter screen, it reduces the space occupied by the filtration device; at the same time, the filtration method from the outside to the inside combined with the spiral channel design can effectively guide the molten iron, evenly disperse the impact force of the molten iron on the outer wall of the filter screen, prevent its damage, and significantly extend its service life.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0014] Figure 1 This is an exploded structural diagram of an iron filtration device according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of an iron filtration device according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the support base in an embodiment of the molten iron filtration device of this utility model.

[0017] As shown in the figure: 1. First filter box; 2. Second filter box; 3. Filter screen; 4. Filter channel; 5. Support base; 6. Through hole; 7. Inlet. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0019] The molten iron filtration device of this utility model embodiment will now be described with reference to the accompanying drawings.

[0020] The molten iron filtration device provided in this embodiment can be applied in a casting workshop to filter molten iron, thereby removing impurities and oxide slag from the molten iron and improving the quality of the castings.

[0021] like Figures 1 to 3 As shown, the molten iron filtration device of this utility model embodiment may include a first filter box 1, a second filter box 2, and a filter screen 3.

[0022] The first filter box 1 and the second filter box 2 are fixed by bolts, and the first filter box 1 and the second filter box 2 after being connected vertically form an inlet 7 and a filter cavity, and the filter screen 3 is set in the filter cavity.

[0023] It should be noted that the first filter box 1 and the second filter box 2 are arranged vertically to form a sealed space. The filter screen 3 is made of high-temperature resistant metal material, such as silicon carbide or zirconium oxide. Molten iron is poured into the filter cavity from the inlet 7 and discharged from the bottom of the second filter box 2 after being filtered by the filter screen 3.

[0024] The outer wall of the filter screen 3 and the inner wall of the filter cavity form a filter channel 4, which is arranged in a spiral structure.

[0025] It should be noted that the rotation amplitude of the helical structure described in this embodiment is reduced; see [link to previous section]. Figure 2 The width of the filter channel gradually decreases from the inlet 7 to the filter channel 4 (the arrow in the figure indicates the direction of molten iron flow), which makes the outer wall of the filter screen 3 more evenly subjected to the impact force and pressure of the molten iron. This reduces the impact force of the molten iron on the filter screen 3, making it less likely to be damaged and extending the service life of the filter screen 3.

[0026] In one embodiment of this utility model, such as Figure 1 As shown, the filter screen 3 is a hollow cylindrical structure, that is, the cross-section of the filter screen 3 is a circular structure. During filtration, molten iron enters from the outside of the filter screen 3, and impurities such as oxide slag in the molten iron are trapped on the outside of the filter screen 3. The molten iron enters the interior of the filter screen 3 and is discharged through the through hole 6 on the second filter box 2.

[0027] Furthermore, such as Figure 1 As shown, the first filter box 1 and the second filter box 2 are arranged in a mirror image, and the first filter box 1 and the second filter box 2 are provided with a through hole 6 in the center.

[0028] It should be noted that the first filter box 1 and the second filter box 2 are set in a mirror image to facilitate their processing. In actual use, the through hole 6 on the first filter box 1 will be blocked to prevent molten iron from flowing out from the upper through hole 6.

[0029] In one embodiment of this utility model, such as Figure 3 As shown, the first filter box 1 or the second filter box 2 is mounted on the support base 5.

[0030] In the embodiments of this utility model, the support base 5 can be placed on the mold, and the surface of the support base 5 that contacts the mold matches the surface of the mold. For example, if the mold surface is a planar structure, then the surface of the support base 5 that contacts the mold is a planar structure; if the mold surface is a circular structure, then the surface of the support base 5 that contacts the mold is a circular structure. In other words, the support base 5 can be made into various shapes to match various usage scenarios.

[0031] Specifically, during the casting process, the filtration device of this invention can be connected to the gating system or directly installed on the mold. Molten iron flows into the filtration cavity through the inlet 7, and after being filtered by the filter screen 3, it flows out through the through hole 6 on the second filter box 2 (located below). Impurities in the molten iron are trapped in the filtration channel 4 (i.e., outside the filter screen 3). The spiral structure of the filtration channel 4 can balance the impact force of the molten iron on the filter screen 3, effectively preventing its damage and extending its service life. In addition, compared with square filter screens, round filter screens have a greater filtration capacity. Therefore, when processing the same volume of molten iron, more square filter screens are needed, thus occupying more space.

[0032] After being filtered by filter screen 3, the molten iron can flow directly into the mold or into the mold through the gating system. The specific choice can be made according to actual needs.

[0033] In summary, the molten iron filtration device of this utility model adopts a circular cross-section filter screen, which improves the filtration performance. Compared with a square filter screen, it reduces the space occupied by the filtration device. At the same time, the filtration method from the outside to the inside combined with the spiral channel design can effectively guide the molten iron, evenly disperse the impact force of the molten iron on the outer wall of the filter screen, prevent its damage, and significantly extend its service life.

[0034] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A molten iron filtering device characterized by comprising: It comprises a first filter box, a second filter box and a filter screen, wherein, the first filter box and the second filter box are fixed by bolts, and the first filter box and the second filter box after upper and lower butt joint form an inlet and a filter cavity, and the filter screen is arranged in the filter cavity; an outer wall of the filter screen and an inner wall of the filter cavity form a filter channel, and the filter channel is arranged in a spiral line structure.

2. The molten iron filtering device according to claim 1, characterized by The filter screen is a hollow cylindrical structure.

3. The molten metal filtering apparatus as defined in claim 1, wherein The first filter box and the second filter box are mirror image arranged, and a through hole is arranged at the center of the first filter box and the second filter box.

4. The molten metal filtering apparatus as defined in claim 1, wherein The first filter box or the second filter box is mounted on a support seat.

Images