A filter structure for casting copper and a casting copper processing line

Abstract

A filter structure and a copper casting processing line for casting copper; the filter structure comprises a ceramic core and a foam ceramic filter; the core body is provided with a containing cavity, the bottom of the containing cavity is provided with a filter hole; a ceramic upper cover is installed on the core body and covers the opening of the containing cavity; the middle part of the ceramic upper cover is provided with a cover opening, the inner side wall of the cover opening is provided with an annular end face; the foam ceramic filter is arranged in the containing cavity; the lower end of the foam ceramic filter abuts against the bottom of the containing cavity; the upper end of the foam ceramic filter extends into the cover opening, and the annular end face contacts and covers the outer edge of the upper end of the foam ceramic filter. The scheme solves the problems that the foam ceramic filter is easy to loosen due to the gap in the containing cavity, and the melt is easy to pass through the gap.

Description

Technical Field

[0001] This utility model relates to the field of ceramic filters, and more particularly to a filter structure and a copper casting processing line for copper casting. Background Technology

[0002] Some copper products are typically cast and then polished. Because molten copper often contains air bubbles and impurities, a filtration device with high-temperature resistance and impact resistance is required in the casting mold. Foam ceramic filters are made from a porous sponge matrix through molding and firing. Their high porosity effectively removes impurities from the melt, but their edge structure is prone to breakage when subjected to molten impact, leading to the inclusion of ceramic particles in the filtrate. This residue can cause collision damage between the polishing wheel and ceramic particles during subsequent polishing processes. To address this, existing technologies embed the foam ceramic filter within a ceramic core. The inner wall of the ceramic core shares the molten impact, reducing edge breakage. However, if the gap between the inner wall of the ceramic core and the outer wall of the foam ceramic filter is too large, the molten material can easily pass through this gap, and the ceramic core tends to move towards it. If the gap is too small, assembly becomes inconvenient, potentially leading to edge breakage during assembly. Utility Model Content

[0003] The purpose of this utility model is to propose a filter structure for cast copper, wherein the ceramic core is provided with a ceramic top cover, the ceramic top cover covers the opening of the core body, and the annular end face of the ceramic top cover can contact the outer edge of the foam ceramic filter to maintain the position stability of the foam ceramic filter. The annular end face can also block the outer edge of the upper end of the foam ceramic filter to reduce the amount of melt entering the receiving cavity from the outside of the foam ceramic filter.

[0004] This utility model also proposes a copper casting processing line that uses the above-mentioned filter structure for copper casting.

[0005] To achieve this objective, the present invention adopts the following technical solution: A filter structure for cast copper includes: a ceramic core and a foam ceramic filter; The ceramic core includes: a core body and a ceramic top cover; The core body has a receiving cavity, and the bottom of the receiving cavity has a filter hole; the ceramic top cover is installed on the core body and covers the opening of the receiving cavity; the ceramic top cover has a cover opening in the middle, and the inner side wall of the cover opening has an annular end face; the foam ceramic filter is disposed in the receiving cavity; the lower end of the foam ceramic filter abuts against the bottom of the receiving cavity; the upper end of the foam ceramic filter extends into the cover opening, and the annular end face contacts and covers the outer edge of the upper end of the foam ceramic filter.

[0006] Alternatively, the ceramic core may further include: a ceramic base plate; The bottom of the receiving cavity is provided with a bottom plate end face, and the middle of the bottom plate end face is provided with a hollow opening. The ceramic base plate is disposed in the receiving cavity, the lower surface of the ceramic base plate is in contact with the upper surface of the end face of the base plate, and the bottom of the foam ceramic filter is in contact with the upper surface of the ceramic base plate; the ceramic base plate is provided with a plurality of filter holes, the filter holes penetrating the upper and lower surfaces of the ceramic base plate.

[0007] Optimally, the upper end of the foam ceramic filter extends outside the opening of the receiving cavity, and the bottom surface of the annular end face is in horizontal contact with the foam ceramic filter.

[0008] Alternatively, the plurality of filter holes can be arranged in a hexagonal array on the ceramic substrate.

[0009] Optimally, the inner diameter of the cutout decreases from high to low.

[0010] Alternatively, the core body may have an L-shaped groove on the outer periphery of the opening of the receiving cavity; the ceramic cover may be fitted onto the L-shaped groove through the cover opening.

[0011] Optimally, the sidewall of the L-shaped groove contacts the inner sidewall of the cover opening.

[0012] Alternatively, the inner ring of the annular end face may be provided with a downwardly sloping guide ramp.

[0013] A copper casting processing line is provided with the above-mentioned filter structure for copper casting.

[0014] Compared with the prior art, one of the above technical solutions has the following beneficial effects: This solution provides a filter structure for cast copper, in which a ceramic core is provided with a ceramic top cover. The ceramic top cover covers the opening of the core body, and the annular end face of the ceramic top cover can contact the outer edge of the foam ceramic filter to keep the position of the foam ceramic filter stable. The annular end face can also block the outer edge of the upper end of the foam ceramic filter to reduce the amount of melt entering the receiving cavity from the outside of the foam ceramic filter. This solves the problems of the foam ceramic filter being easy to loosen due to gaps in the receiving cavity and the melt easily passing through the gaps. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of the filter structure; Figure 2 This is an exploded view of one embodiment of the filter structure; Figure 3This is a cross-sectional structural diagram of one embodiment of the filter structure.

[0016] in: Ceramic core 1, foam ceramic filter 2; Core body 11; ceramic top cover 12; ceramic base plate 13; Receiving cavity 111; L-shaped groove 112; bottom plate end face 113; hollow opening 114; end face slope 115; cover opening 121; annular end face 122; guide slope 123; filter hole 131. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments 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 are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "inner side," "outer side," "inner end," "outer end," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0019] like Figure 1-3 A filter structure for cast copper includes: a ceramic core 1 and a foam ceramic filter 2; The ceramic core 1 includes: a core body 11 and a ceramic top cover 12; The core body 11 is provided with a receiving cavity 111, and the bottom of the receiving cavity 111 is provided with a filter hole 131; the ceramic cover 12 is installed on the core body 11 and covers the opening of the receiving cavity 111; the ceramic cover 12 is provided with a cover opening 121 in the middle, and the inner sidewall of the cover opening 121 is provided with an annular end face 122; the foam ceramic filter 2 is disposed in the receiving cavity 111; the lower end of the foam ceramic filter 2 abuts against the bottom of the receiving cavity 111; the upper end of the foam ceramic filter 2 extends into the cover opening 121, and the annular end face 122 contacts and covers the outer edge of the upper end of the foam ceramic filter 2.

[0020] This solution provides a filter structure for cast copper, wherein the ceramic core 1 is provided with a ceramic top cover 12, which covers the opening of the core body 11, and the annular end face 122 of the ceramic top cover 12 can contact the outer edge of the foam ceramic filter 2 to keep the position of the foam ceramic filter 2 stable. The annular end face 122 can also block the outer edge of the upper end of the foam ceramic filter 2 to reduce the amount of melt entering the receiving cavity 111 from the outside of the foam ceramic filter 2. This solves the problems of the foam ceramic filter 2 being prone to loosening due to gaps in the receiving cavity 111 and the melt easily passing through the gaps.

[0021] Specifically, the ceramic core 1 mainly includes a core body 11 and a ceramic top cover 12; the core body 11 is provided with a receiving cavity 111, which is used to receive the foam ceramic filter 2; the bottom of the receiving cavity 111 is provided with a filter hole 131 for the melt to pass through; the opening of the receiving cavity 111 is located at the top, and the ceramic top cover 12 is installed at the opening of the receiving cavity 111, with the cover opening 121 of the ceramic top cover 12 exposing the foam ceramic filter 2 in the receiving cavity 111; the inner wall of the cover opening 121 of the ceramic top cover 12 is provided with an annular end face 122 protruding from the wall surface, and the annular end face 122 covers the outer edge of the upper end of the foam ceramic filter 2. When the filter structure is poured with melt, the melt falls from top to bottom, and the annular end face 122 blocks the gap between the outer edge of the foam ceramic filter 2 and the inner wall of the opening of the receiving cavity 111, so the melt will not flow out of the receiving cavity 111. The molten material begins to fall from the inner wall of the opening, thus preventing impurities from falling directly into the filter hole 131 and improving the filtration stability of the filter structure. In addition, when the ceramic cover 12 is installed on the core body 11, the annular end face 122 of the ceramic cover 12 can press against the foam ceramic filter 2 from top to bottom, which can reduce the movement of the foam ceramic filter 2 into the gap and keep the position of the foam ceramic filter 2 stable. There can be an appropriate gap between the receiving cavity 111 and the foam ceramic filter 2, which can facilitate the installation and disassembly of the foam ceramic filter 2. The annular end face 122 can cover the gap and limit the position of the foam ceramic filter 2, ensuring that the filter structure has the advantages of easy disassembly, fixed stability and filtration stability. This solves the problem that the foam ceramic filter 2 is easy to loosen due to the gap in the receiving cavity 111 and that the molten material can easily pass through the gap.

[0022] In some embodiments, the bottom of the receiving cavity 111 is directly provided with an integrally formed filter hole 131, or the filter hole 131 may be indirectly provided by other mechanisms at the bottom of the receiving cavity 111. Alternatively, the ceramic core 1 may further include: a ceramic base plate 13; The bottom of the receiving cavity 111 is provided with a bottom plate end face 113, and the middle part of the bottom plate end face 113 is provided with a hollow opening 114. The ceramic base plate 13 is disposed in the receiving cavity 111, the lower surface of the ceramic base plate 13 contacts the upper surface of the base plate end face 113, and the bottom of the foam ceramic filter 2 contacts the upper surface of the ceramic base plate 13; the ceramic base plate 13 is provided with a plurality of filter holes 131, and the filter holes 131 penetrate the upper and lower surfaces of the ceramic base plate 13.

[0023] A ceramic base plate 13 is disposed at the bottom of the receiving cavity 111. The bottom of the receiving cavity 111 is provided with a base plate end face 113, and the base plate end face 113 is provided with a hollow opening 114. The base plate end face 113 supports the ceramic base plate 13 upward. Thus, the ceramic base plate 13 is disposed between the base plate end face 113 and the foam ceramic filter 2. The ceramic base plate 13 is provided with multiple filter holes 131, and the melt passes through the filter holes 131 of the ceramic base plate 13. Since the ceramic base plate 13 can be detached from the bottom of the receiving cavity 111, different ceramic base plates 13 can be replaced in this embodiment to switch to ceramic base plates 13 with filter holes 131 with different parameters, thereby controlling the parameters of the melt when it flows out. Alternatively, this embodiment can be replaced with a ceramic base plate 13 of different thicknesses to eliminate the influence of different heights of the foam ceramic filter 2 on the assembly in the receiving cavity 111; for example, when the foam ceramic filter 2 is slightly higher than the opening of the receiving cavity 111, a ceramic base plate 13 with a smaller thickness can be selected to eliminate the height difference between the foam ceramic filter 2 and the opening of the receiving cavity 111.

[0024] In some embodiments, the upper end of the foam ceramic filter 2 is completely contained within the opening of the receiving cavity 111, and the annular end face 122 can be inclined against the upper surface of the foam ceramic filter 2, so that the inclined end of the annular end face 122 abuts against the foam ceramic filter 2. In some embodiments, the upper end of the foam ceramic filter 2 extends out of the opening of the receiving cavity 111, and the bottom surface of the annular end face 122 is in horizontal contact with the foam ceramic filter 2.

[0025] The upper end of the foam ceramic filter 2 may extend slightly beyond the opening of the receiving cavity 111, for example, by 1 to 5 mm. Since the ceramic base plate 13 is replaceable, ceramic base plates 13 of different thicknesses can be replaced in this embodiment so that the upper end of the foam ceramic filter 2 may extend slightly beyond the opening of the receiving cavity 111. The annular end face 122 of the ceramic cover 12 contacts the outer edge of the upper end of the foam ceramic filter 2 outside the opening of the receiving cavity 111. The annular end face 122 and the foam ceramic filter 2 are in horizontal contact, which can increase the contact area between the two, thereby maintaining the positional stability of the foam ceramic filter 2, increasing the difficulty of the melt transferring to the inner wall of the receiving cavity 111, thereby improving the filtration stability.

[0026] Alternatively, the plurality of filter holes 131 are arranged in a hexagonal array on the ceramic base plate 13.

[0027] Some ceramic base plates 13 may be equipped with filter holes 131 arranged in a hexagonal array. The filter holes 131 are arranged in a hexagonal array, and the gap between the filter holes 131 can be further reduced to improve the space utilization of the ceramic base plate 13.

[0028] Optimally, the inner diameter of the cutout 114 decreases from high to low.

[0029] The inner diameter of the perforation 114 decreases from high to low, forming a funnel-shaped structure. This funnel-shaped structure makes the perforation 114 form an inner wall that slopes towards the center. The melt flowing out from the filter hole 131 can flow out along the inner wall of the perforation 114, so that the melt is output at an inclined angle, reducing the amount of melt remaining at the bottom of the ceramic core 1.

[0030] Alternatively, the core body 11 may be provided with an L-shaped groove 112 on the outer periphery of the opening of the receiving cavity 111; the ceramic cover 12 may be fitted onto the L-shaped groove 112 through the cover opening 121.

[0031] The L-shaped groove 112 is located on the outer periphery of the opening of the receiving cavity 111, and the L-shaped groove 112 is relatively recessed into the outer wall surface of the core body 11. The ceramic cover 12 uses its own weight to fit the cover opening 121 into the L-shaped groove 112. The bottom of the ceramic cover 12 can be close to or in contact with the bottom of the L-shaped groove 112, and the inner wall of the cover opening 121 can be close to or in contact with the side wall of the L-shaped groove 112. The annular end face 122 presses down on the foam ceramic filter 2 under the action of gravity, thereby compacting the position of the foam ceramic filter 2. In this way, the assembly and disassembly between the core body 11 and the ceramic cover 12 are convenient. The ceramic cover 12 only needs to cover the L-shaped groove 112 of the core body 11 with the cover opening 121 facing downwards, so that the ceramic cover 12 can compact the upper surface of the foam ceramic filter 2 based on its own weight.

[0032] Optimally, the sidewall of the L-shaped groove 112 contacts the inner sidewall of the cover opening 121.

[0033] The ceramic top cover 12 covers the L-shaped groove 112 of the core body 11 with the cover opening 121 facing downward. The side wall of the L-shaped groove 112 and the inner side wall of the cover opening 121 can contact each other. The ceramic top cover 12 can fall along the side wall of the falling L-shaped groove 112, improving the smoothness of the assembly of the ceramic top cover 12 on the core body 11.

[0034] Alternatively, the inner ring of the annular end face 122 may be provided with a downwardly inclined guide ramp 123.

[0035] The inner ring of the annular end face 122 is provided with a guide ramp 123. The guide ramp 123 slopes downward. When some of the scattered melt falls to the annular end face 122, the guide ramp 123 of the annular end face 122 can guide the melt to fall obliquely to the foam ceramic filter 2, so that the melt is guided to the outer edge away from the foam ceramic filter 2.

[0036] A copper casting processing line is provided with the above-mentioned filter structure for copper casting.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A filter structure for cast copper, characterized in that, include: Ceramic core and foam ceramic filter; The ceramic core includes: a core body and a ceramic top cover; The core body has a receiving cavity, and the bottom of the receiving cavity has a filter hole; the ceramic top cover is installed on the core body and covers the opening of the receiving cavity; the ceramic top cover has a cover opening in the middle, and the inner side wall of the cover opening has an annular end face; the foam ceramic filter is disposed in the receiving cavity; the lower end of the foam ceramic filter abuts against the bottom of the receiving cavity; the upper end of the foam ceramic filter extends into the cover opening, and the annular end face contacts and covers the outer edge of the upper end of the foam ceramic filter.

2. The filter structure for cast copper according to claim 1, characterized in that, The ceramic core also includes: a ceramic base plate; The bottom of the receiving cavity is provided with a bottom plate end face, and the middle of the bottom plate end face is provided with a hollow opening. The ceramic base plate is disposed in the receiving cavity, the lower surface of the ceramic base plate is in contact with the upper surface of the end face of the base plate, and the bottom of the foam ceramic filter is in contact with the upper surface of the ceramic base plate; the ceramic base plate is provided with a plurality of filter holes, the filter holes penetrating the upper and lower surfaces of the ceramic base plate.

3. A filter structure for cast copper according to claim 2, characterized in that, The upper end of the foam ceramic filter extends outside the opening of the receiving cavity, and the bottom surface of the annular end face is in horizontal contact with the foam ceramic filter.

4. A filter structure for cast copper according to claim 2, characterized in that, Multiple filter holes are arranged in a hexagonal array on the ceramic base plate.

5. A filter structure for cast copper according to claim 2, characterized in that, The inner diameter of the cutout decreases from high to low.

6. A filter structure for cast copper according to claim 1, characterized in that, The core body has an L-shaped groove on the outer periphery of the opening of the receiving cavity; the ceramic cover is fitted onto the L-shaped groove through the cover opening.

7. A filter structure for cast copper according to claim 6, characterized in that, The sidewall of the L-shaped groove contacts the inner sidewall of the cover opening.

8. A filter structure for cast copper according to any one of claims 1-7, characterized in that, The inner ring of the annular end face is provided with a downwardly sloping guide ramp.

9. A copper casting processing line, characterized in that, A filter structure for cast copper is provided as described in any one of claims 1-8.

Images