Casting head structure for sand mold casting

Abstract

The utility model provides a sand casting head structure which comprises a body, the body comprises an inclined main body part, the upper end of the main body part is provided with a mounting part, the lower end of the main body part is provided with a fixing part, and a functional section with the cross section larger than that of the main body part is formed at the joint position of the mounting part and the main body part; a filter part is detachably mounted on the body mounting part, and a mounting part is arranged on the body fixing part; the filter part comprises a mounting seat and a filter screen, the mounting seat comprises a conical base body part, an inner folding edge is arranged at the lower end of the base body part, the upper end of the filter screen is fixed to the inner folding edge, a matching ring is arranged on the lower side of the inner folding edge, and a liquid passing space is reserved between the filter screen and the inner wall of the body; the mounting piece comprises a mounting sleeve sleeving the body, and a check ring is arranged at the end, close to the middle of the body, of the mounting sleeve. The filter piece is arranged on the mounting part of the body, impurities in molten metal are filtered in the molten metal pouring process, and due to the fact that the liquid passing space is reserved between the filter screen and the inner wall of the body, it is guaranteed that the molten metal is discharged smoothly in the pouring process.

Description

Technical Field

[0001] The invention belongs to the technical field of casting, and in particular relates to a pouring and rising head structure for sand casting. Background Art

[0002] Sand casting refers to a casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. A pouring port is set at the top of the sand box used for sand casting as a channel for molten steel to enter. The molten metal mixed with inclusions or oxide film is directly poured into the sand box through the pouring port, which will cause defects such as bubbles, pores or oxide scale in the casting. Although the molten metal is often filtered by installing a filter plate on the pouring riser, it is easy to have the problem of difficulty in pouring the liquid. The flow rate of the molten metal has to be reduced during pouring to prevent the molten metal from overflowing. This operation method not only affects the efficiency, but also affects the casting quality in some cases. Therefore, it is necessary to improve the existing pouring riser structure. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a sand casting pouring head structure.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A sand casting pouring and riser structure comprises a body, which comprises an oblique main body portion, a mounting portion is provided at the upper end of the main body portion, a fixing portion is provided at the lower end, and a functional section whose cross section is larger than that of the main body portion is formed at the connecting position between the mounting portion and the main body portion; a filter element is detachably mounted on the mounting portion of the main body, and a mounting element is provided on the fixing portion of the main body; the filter element comprises a mounting seat and a filter screen at the lower end of the mounting seat, the mounting seat comprises a conical base portion, an inner folding edge is provided at the lower end of the base portion, the upper end of the filter screen is fixed to the inner folding edge, and a matching ring is provided at the lower side of the inner folding edge, leaving a liquid space between the filter screen and the inner wall of the main body; the mounting element comprises a mounting sleeve which is sleeved on the lower end of the main body, and a retaining ring is provided at one end of the mounting sleeve close to the middle of the main body.

[0006] Furthermore, the mounting sleeve is fixed to the main body by welding.

[0007] Furthermore, the weld between the mounting sleeve and the body is an annular weld.

[0008] Furthermore, the filter screen is made of ceramic material or high temperature resistant fiber material.

[0009] Furthermore, the connection between the installation part and the main body part, as well as the connection between the main body part and the fixing part, both adopt arc structure transition.

[0010] Further, the fixing portion is arranged vertically downward.

[0011] Furthermore, the fixing portion is arranged horizontally.

[0012] Furthermore, an outward supporting platform is provided at the upper end of the mounting portion.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The invention provides a filter at the mounting portion of the main body, which can effectively filter inclusions in the molten metal during the pouring process. Since a liquid space is left between the filter screen and the inner wall of the main body, the molten metal is ensured to flow smoothly during the pouring process, laying a foundation for improving the quality of casting products. At the same time, a mounting sleeve is provided on the fixed portion of the main body, and the stability between the pouring riser structure and the sand box can be guaranteed regardless of whether the pouring riser structure is arranged on the top of the sand box or on the side of the sand box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure created by the present invention;

[0017] Figure 2 for Figure 1 A cross-sectional view of

[0018] Figure 3 for Figure 1 Schematic diagram of the filter element;

[0019] Figure 4 for Figure 1 Schematic diagram of the Chinese body;

[0020] Figure 5 This is a schematic diagram of a horizontal arrangement of the fixing part in an embodiment of the present invention;

[0021] Figure 6 for Figure 5 A cross-sectional view of

[0022] Figure 7 for Figure 5 Schematic diagram of the body. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] A sand casting pouring head structure, such as Figures 1 to 7 As shown, it includes a main body 1, which includes an oblique main body part 2, a mounting part 3 is provided at the upper end of the main body part, a fixing part 4 is provided at the lower end, and a functional section 5 with a cross section larger than the cross section of the main body part is formed at the connecting position between the mounting part and the main body part; a filter element 6 is detachably mounted on the mounting part of the main body, and a mounting part 7 is provided on the fixing part of the main body.

[0028] The filter element includes a mounting seat 8 and a filter screen 9 at the lower end of the mounting seat, the mounting seat includes a conical base portion 10, an inner folded edge 11 is provided at the lower end of the base portion, the upper end of the filter screen is fixed to the inner folded edge, and a matching ring 12 is provided at the lower side of the inner folded edge, the outer wall of the matching ring is slidably matched with the inner wall of the mounting portion, and a liquid space 13 is left between the filter screen and the inner wall of the body; the mounting piece includes a mounting sleeve 14 mounted on the lower end of the body, a retaining ring 15 is provided at one end of the mounting sleeve close to the middle of the body, and the mounting sleeve and the body are in a sealed state.

[0029] Usually, the installation sleeve is welded and fixed to the body. The weld between the installation sleeve and the body is an annular weld. The filter screen is made of ceramic material or high temperature resistant fiber material. The connection between the installation part and the main body, and the connection between the main body and the fixing part, are both made of arc structure transition. In an optional embodiment, Figure 1 As shown, the fixing portion is arranged vertically downward. In another optional embodiment, as Figure 5 As shown, the fixing part can also be arranged horizontally. The pouring head structure is flexible in installation and arrangement, with little limitation. The upper end of the installation part is provided with an outward bearing platform 16, which cooperates stably with the installation seat.

[0030] The lower end of the body is inserted into the liquid inlet of the sand box. The installation sleeve not only strengthens the body, making the joint between the body and the sand box stronger and less prone to damage, but also helps to improve the stability of the body structure. The retaining ring is against the surface of the sand box, so that the body and the sand box are firmly combined, which can be fixed by welding or other methods to effectively ensure the stability of the pouring head structure during the pouring process.

[0031] The invention provides a filter at the mounting portion of the main body, which can effectively filter inclusions in the molten metal during the pouring process. Since a liquid space is left between the filter screen and the inner wall of the main body, the molten metal is ensured to flow smoothly during the pouring process, laying a foundation for improving the quality of casting products. At the same time, a mounting sleeve is provided on the fixed portion of the main body, and the stability between the pouring riser structure and the sand box can be guaranteed regardless of whether the pouring riser structure is arranged on the top of the sand box or on the side of the sand box.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sand casting pouring head structure, characterized in that: The invention comprises a main body, which comprises an oblique main body part, a mounting part is provided at the upper end of the main body part, a fixing part is provided at the lower end, and a functional section whose cross section is larger than that of the main body part is formed at the connecting position between the mounting part and the main body part; a filter element is detachably mounted on the mounting part of the main body, and a mounting part is provided on the fixing part of the main body; the filter element comprises a mounting seat and a filter screen at the lower end of the mounting seat, the mounting seat comprises a conical base part, an inner folding edge is provided at the lower end of the base part, the upper end of the filter screen is fixed to the inner folding edge, and a matching ring is provided at the lower side of the inner folding edge, and a liquid-passing space is left between the filter screen and the inner wall of the main body; the mounting part comprises a mounting sleeve which is sleeved on the lower end of the main body, and a retaining ring is provided at one end of the mounting sleeve close to the middle part of the main body.

2. A sand casting pouring head structure according to claim 1, characterized in that: The mounting sleeve is welded and fixed to the body.

3. A sand casting pouring head structure according to claim 2, characterized in that: The weld between the mounting sleeve and the body is an annular weld.

4. A sand casting pouring and riser structure according to claim 1, characterized in that: The filter screen is made of ceramic material or high temperature resistant fiber material.

5. A sand casting pouring head structure according to claim 1, characterized in that: The connection between the installation part and the main body part, as well as the connection between the main body part and the fixing part, are both transitioned by arc structures.

6. A sand casting pouring and riser structure according to claim 1, characterized in that: The fixing portion is arranged vertically downward.

7. A sand casting pouring and riser structure according to claim 1, characterized in that: The fixing portion is arranged horizontally.

8. A sand casting pouring and riser structure according to claim 1, characterized in that: An outward supporting platform is arranged at the upper end of the mounting portion.

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