Three-layer groove filter cap for casting

Abstract

The utility model discloses a three-layer groove filter cap for casting, which comprises a primary filter cap, the middle of the primary filter cap extends downwards to form a groove, a filter tube is mounted at the bottom of the primary filter cap, the top of the filter tube is connected with the groove, a secondary filter cap is mounted at the bottom of the filter tube, and the groove in the primary filter cap, the filter tube and the secondary filter cap are arranged in a concentric circle. Impurities such as metal residues in molten metal can be completely intercepted through primary interception of the groove and secondary interception of the filter pipe and the secondary filter cap, and the casting quality of finished products is guaranteed. Through flow division of the filter pipe and the secondary filter cap, molten metal can uniformly and stably flow into a mold cavity, the phenomena of air entrapment and air clogging are avoided, and the casting safety and the casting quality of a finished product are guaranteed; the groove is formed in the primary filter cap, and the filter tube and the secondary filter cap are arranged in a concentric circle, so that the secondary filter cap in casting can play a turbulent flow role.

Description

Technical Field

[0001] This utility model belongs to the field of metal melt filtration technology, and in particular relates to a three-layer grooved filter cap for casting. Background Technology

[0002] Currently, molten metal casting filtration technologies generally include wire mesh filtration and ceramic filter sheet filtration. Among these, wire mesh filtration is widely used in molten metal casting due to its simple production process and low cost. In casting production, the molten metal, after reaching high temperatures, is stored in the holding furnace of the die-casting machine. The molten metal is then poured into the mold cavity through the mold gate to complete the casting process. During the casting process, some metal residues and other impurities may follow the molten metal into the mold cavity, affecting the quality of the finished product. Therefore, a filter screen needs to be placed at the gate to filter impurities and prevent them from entering the mold cavity with the molten metal. Utility Model Content

[0003] The purpose of this invention is to provide a three-layer grooved filter cap for casting, so as to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides a three-layer grooved filter cap for casting, including a primary filter cap, wherein a groove extends downward from the middle of the primary filter cap, a filter tube is installed at the bottom of the primary filter cap, the top of the filter tube is connected to the groove, and a secondary filter cap is installed at the bottom of the filter tube, wherein the groove, the filter tube and the secondary filter cap in the primary filter cap are arranged concentrically.

[0005] Preferably, the primary filter cap, the groove, and the guide wall are integrally formed, and are arranged from top to bottom as the primary filter cap, the guide wall, and the groove.

[0006] Preferably, the filter tube includes an upper port and a lower port, the flow guide wall and the groove are located inside the upper port, the edge of the upper port is located below the primary filter cap and is connected to the top edge of the flow guide wall; the secondary filter cap is located inside the lower port, and the bottom edge of the secondary filter cap is connected to the edge of the lower port.

[0007] Preferably, the secondary filter cap is concave in shape, the inner diameter of the secondary filter cap decreases from bottom to top, and the top of the secondary filter cap is arc-shaped.

[0008] Preferably, the diameter of the upper port is larger than the diameter of the lower port.

[0009] Preferably, the flow guide wall and groove of the primary filter cap, the upper port and lower port of the filter tube, and the secondary filter cap are all located inside the gate, and the portion of the primary filter cap above the upper port is located outside the gate.

[0010] Preferably, the primary filter cap, the filter tube, and the secondary filter cap are connected and fixedly connected by staples and / or high-temperature resistant thread.

[0011] Preferably, the primary filter cap, the filter tube, and the secondary filter cap are all made of glass fiber.

[0012] The present invention discloses the following technical effects:

[0013] The primary interception of the groove and the secondary interception of the filter tube and secondary filter cap can completely intercept impurities such as metal residues in the molten metal, ensuring the casting quality of the finished product. The diversion of the filter tube and secondary filter cap can make the molten metal flow into the mold cavity evenly and steadily, avoiding the phenomenon of air entrapment and air pocketing, ensuring the safety of casting and the casting quality of the finished product. By setting the groove in the primary filter cap, the filter tube and the secondary filter cap in a concentric circle, the secondary filter cap can ensure that it plays a turbulent role in casting. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a schematic diagram of the entire utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the filter tube of this utility model;

[0018] Figure 4 This is a schematic diagram of the primary filter cap of this utility model.

[0019] In the diagram: 1. Primary filter cap; 1-1. Groove; 1-2. Guide wall; 2. Filter tube; 2-1. Upper port; 2-2. Lower port; 3. Secondary filter cap. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example

[0023] Reference Figures 1 to 4 As shown, this embodiment provides a three-layer grooved filter cap for casting, including a primary filter cap 1. A groove 1-1 extends downwards from the center of the primary filter cap 1. A filter tube 2 is installed at the bottom of the primary filter cap 1, with its top connected to the groove 1-1. A secondary filter cap 3 is installed at the bottom of the filter tube 2. The groove 1-1, filter tube 2, and secondary filter cap 3 in the primary filter cap 1 are arranged concentrically. During casting, molten metal enters the filter tube 2 through the groove 1-1 on the primary filter cap 1. A portion of the molten metal is filtered out from the side of the filter tube 2, and another portion is filtered out from the secondary filter cap 3. The groove 1-1 of the primary filter cap 1 intercepts most of the metal residue and other impurities. A small portion, not intercepted by the groove 1-1, is intercepted by the filter tube 2 and the secondary filter cap 3, falling into the gap between the filter tube 2 and the secondary filter cap 3. This does not affect the subsequent diversion and filtration of molten metal through the secondary filter cap 3. The primary interception by groove 1-1 and the secondary interception by filter tube 2 and secondary filter cap 3 completely intercept metal residues and other impurities in the molten metal, ensuring the casting quality of the finished product. The flow diversion by filter tube 2 and secondary filter cap 3 allows the molten metal to flow evenly and smoothly into the mold cavity, avoiding air entrapment and ensuring casting safety and finished product quality. Although the filter area of ​​filter tube 2 is larger than that of secondary filter cap 3, the concentric arrangement of groove 1-1 in primary filter cap 1, filter tube 2, and secondary filter cap 3 ensures that secondary filter cap 3 can provide turbulence during casting.

[0024] The design was further optimized so that the primary filter cap 1, the groove 1-1, and the guide wall 1-2 are integrally formed, arranged from top to bottom as follows: primary filter cap 1, guide wall 1-2, and groove 1-1. The primary filter cap 1, groove 1-1, and guide wall 1-2 are formed by pressing them together in one step using a molding machine. This allows them to withstand a large flow rate of molten liquid metal without affecting the filtration effect.

[0025] Further optimization of the design: Filter tube 2 includes an upper port 2-1 and a lower port 2-2. The guide wall 1-2 and groove 1-1 are located within the upper port 2-1, with the edge of the upper port 2-1 located below the primary filter cap 1 and connected to the top edge of the guide wall 1-2. The secondary filter cap 3 is located within the lower port 2-2, with its bottom edge connected to the edge of the lower port 2-2. The diameter of the groove 1-1 is larger than the diameter of the primary filter cap 1's inlet, causing the guide wall 1-2 to be tilted. There is a certain gap between the outer side of the guide wall 1-2 and the inner wall of the filter tube 2. In the later stages of casting, excessive accumulation of metal residues and other impurities in the groove 1-1 can lead to a decrease in the filtration performance of the groove 1-1. At this point, some of the molten metal will flow into the filter tube 2 through the guide wall 1-2, solving the problem of insufficient filtration capacity in the groove 1-1.

[0026] Further optimization of the design: the secondary filter cap 3 is inverted concave in shape, with its inner diameter decreasing from bottom to top, and its top is arc-shaped. The secondary filter cap 3 resembles the upper half of an ellipse whose vertical direction is longer than its horizontal direction. Small amounts of metal residue and other impurities will remain in the angle formed by the inner side of the secondary filter cap 3 and the filter tube 2, without affecting the filtration flow rate and filtration effect of the secondary filter cap 3.

[0027] The design was further optimized so that the diameter of the upper port 2-1 is larger than that of the lower port 2-2. The filter tube 2 is inverted conical in shape. In the later stages of casting, when the filtration capacity of the secondary filter cap 3 at the bottom is insufficient, more molten liquid metal will be filtered out through the side wall of the filter tube 2, ensuring filtration efficiency.

[0028] In a further optimized design, the flow guide wall 1-2 and groove 1-1 of the primary filter cap 1, the upper port 2-1 and lower port 2-2 of the filter tube 2, and the secondary filter cap 3 are all located inside the gate. The portion of the primary filter cap 1 above the upper port 2-1 is located outside the gate. The end of the upper port 2-1 is flush with the outer edge of the gate, ensuring that all molten metal entering the gate is filtered. The portion of the primary filter cap 1 above the upper port 2-1 is fixed to the perimeter of the gate by fasteners, providing support for the flow guide wall 1-2, groove 1-1, filter tube 2, and secondary filter cap 3 of the primary filter cap 1.

[0029] To further optimize the design, the primary filter cap 1, filter tube 2, and secondary filter cap 3 are connected and secured using staples and / or high-temperature resistant thread stitching. Considering the quality requirements and casting volume of the finished product, staples and / or high-temperature resistant thread stitching are preferable for securing the connection. When the quality requirements of the cast product are not high and the casting volume is small, staples are preferred to reduce material costs and filter screen processing costs. When the quality requirements of the cast product are high and the casting volume is large, high-temperature resistant thread stitching is preferred to ensure casting stability and finished product quality.

[0030] The design is further optimized so that the primary filter cap 1, filter tube 2, and secondary filter cap 3 are all made of glass fiber. The glass fiber has zero metal content, ensuring casting quality. It can also withstand temperatures from 300℃ to 1500℃, and the specific type of glass fiber can be selected according to specific casting requirements. The glass fiber material used in this application is quartz glass fiber.

[0031] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0032] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A three-layer recessed filter cap for casting, characterized by: The application relates to a filter cap, which comprises a primary filter cap (1), wherein a groove (1-1) is formed in the middle of the primary filter cap (1) and extends downward, a filter tube (2) is arranged at the bottom of the primary filter cap (1), the top of the filter tube (2) is connected to the groove (1-1), and a secondary filter cap (3) is arranged at the bottom of the filter tube (2).

2. The three-layered recessed filter cap for casting according to claim 1, characterized in that: The primary filter cap (1), the groove (1-1) and a flow guide wall (1-2) are integrally formed, and the primary filter cap (1), the flow guide wall (1-2) and the groove (1-1) are sequentially arranged from top to bottom.

3. The three-layered recessed filter cap for casting according to claim 2, characterized in that: The filter tube (2) comprises an upper port (2-1) and a lower port (2-2), the flow guide wall (1-2) and the groove (1-1) are arranged in the upper port (2-1), the edge of the upper port (2-1) is arranged below the primary filter cap (1) and is connected to the top edge of the flow guide wall (1-2), and the secondary filter cap (3) is arranged in the lower port (2-2) and is connected to the edge of the lower port (2-2).

4. The three-layered recessed filter cap for casting according to claim 1, characterized in that: The secondary filter cap (3) is in an inverted concave shape as a whole, the inner diameter of the secondary filter cap (3) decreases from bottom to top, and the top of the secondary filter cap (3) is in a circular arc shape.

5. The three-layered recessed filter cap for casting according to claim 3, characterized in that: The diameter of the upper port (2-1) is larger than that of the lower port (2-2).

6. The three-layered recessed filter cap for casting according to claim 5, characterized in that: The flow guide wall (1-2) and the groove (1-1) of the primary filter cap (1), the upper port (2-1) and the lower port (2-2) of the filter tube (2) and the secondary filter cap (3) are arranged in a gate, and the primary filter cap (1) is arranged above the upper port (2-1) and partially arranged outside the gate.

7. The three-layered recessed filter cap for casting according to claim 1, characterized in that: The primary filter cap (1), the filter tube (2) and the secondary filter cap (3) are fixedly connected through bookbinding and / or high-temperature-resistant thread sewing.

8. The three-layered recessed filter cap for casting according to claim 1, characterized in that: The primary filter cap (1), the filter tube (2) and the secondary filter cap (3) are all made of glass fiber material.

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