Pouring system of double-channel mixed pump body casting

Abstract

The utility model discloses a kind of double runner mixed formula pump body casting pouring system, including sprue cup and several casting cavities, the bottom of the sprue cup is provided with cross gate, the both ends of the cross gate are respectively connected with first straight runner, second straight runner, the bottom of the first straight runner is connected with upper cross gate, the bottom of second straight runner is connected with lower cross gate, the upper cross gate is provided with several upper inner gates, lower cross gate is provided with several lower inner gates, the upper end of the casting cavity is connected with upper inner gate, lower end is connected with lower inner gate. The utility model provides a kind of double runner mixed formula pump body casting pouring system, which is beneficial to accurately control the solidification speed of local area and improve the quality of casting.

Description

Technical Field

[0001] This utility model relates to a dual-channel hybrid pump body casting system, belonging to the field of casting equipment technology. Background Technology

[0002] Key components of oxygenation pumps produced by traditional casting processes (such as the flow guide housing) have complex structures. It is difficult to achieve sufficient and stable filling of the castings using conventional top-pouring or bottom-pouring gating systems. Therefore, a precision casting gating system for dual-flow-channel pump bodies, as disclosed in CN202223058341.3, has emerged. This system uses a mixed gating system for casting, but the flow rates of the top and bottom pouring are not reasonably distributed. This results in a large temperature difference when the molten metal from the top and bottom pouring meets in the mold cavity, making it difficult to accurately control the solidification rate in local areas. This makes the castings prone to problems such as shrinkage. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a dual-channel mixing pump body casting system. By reasonably distributing the flow rates of the top and bottom pouring molten liquids, the time when the two meet in the cavity can be conveniently and accurately controlled, which is conducive to accurately controlling the solidification rate of local areas, improving the quality of castings, and overcoming the shortcomings of the prior art.

[0004] The technical solution of this utility model is: a dual-flow-channel hybrid pump body casting system, including a pouring cup and several casting cavities. A horizontal runner is provided at the bottom of the pouring cup. A first straight runner and a second straight runner are respectively connected to both ends of the horizontal runner. An upper horizontal runner is connected to the bottom of the first straight runner, and a lower horizontal runner is connected to the bottom of the second straight runner. Several upper ingates are provided on the upper horizontal runner, and several lower ingates are provided on the lower horizontal runner. The upper end of the casting cavity is connected to the upper ingate, and the lower end is connected to the lower ingate.

[0005] Furthermore, the upper and lower horizontal runners are distributed in parallel, the casting cavity is inclinedly connected between the two, and a venting rod is connected between the upper ingate and the pouring cup.

[0006] Furthermore, the first sprue is connected to the middle of the upper runner, and the second sprue is connected to the middle of the lower runner. The center lines of the first sprue and the second sprue are located on the same plane, and several casting cavities are symmetrically distributed on both sides of the first sprue and the second sprue.

[0007] Furthermore, the position of the pouring cup on the runner is close to the end connecting to the second sprue, and the first sprue is shorter than the second sprue.

[0008] By implementing this utility model, the molten metal enters the horizontal runner through the pouring cup and then flows into the upper and lower horizontal runners after passing through the first and second straight runners. The upper horizontal runner is connected to the upper end of the casting cavity through the lower ingate for top pouring, while the lower horizontal runner is connected to the lower end of the casting cavity through the lower ingate for bottom pouring. With the first and second straight runners having the same diameter, the first straight runner is shorter than the second straight runner. By positioning the pouring cup on the horizontal runner close to the end connected to the first straight runner, top and bottom pouring of the casting cavity can be achieved almost simultaneously. This ensures that the molten metal converging in the casting cavity has a similar temperature, which is beneficial for precisely controlling the solidification rate of local areas and improving the quality of the casting. Attached Figure Description

[0009] Figure 1 This is a three-dimensional view of the present invention.

[0010] The figure shows: 1. Sprue cup; 2. Casting cavity; 3. Streamer; 4. First sprue; 5. Second sprue; 6. Upper sprue; 7. Lower sprue; 8. Upper ingate; 9. Lower ingate; 10. Vent rod. Detailed Implementation

[0011] Embodiments of this utility model: such as Figure 1 As shown, a dual-flow-channel hybrid pump body casting system includes a pouring cup 1 and several casting cavities 2. A horizontal runner 3 is provided at the bottom of the pouring cup 1. A first vertical runner 4 and a second vertical runner 5 are connected to both ends of the horizontal runner 3. An upper horizontal runner 6 is connected to the bottom of the first vertical runner 4, and a lower horizontal runner 7 is connected to the bottom of the second vertical runner 5. Several upper ingates 8 are provided on the upper horizontal runner 6, and several lower ingates 9 are provided on the lower horizontal runner 7. The upper end of each casting cavity 2 is connected to an upper ingate 8, and the lower end is connected to a lower ingate 9. In this application, the cross-sections of the first and second vertical runners 5 are equal, and the cross-sections of the upper and lower horizontal runners 6 and 7 are equal. The length of the first vertical runner 4 is shorter than that of the second vertical runner 5, so that the upper and lower horizontal runners 6 are parallel and the upper horizontal runner 6 is higher than the lower horizontal runner 7. The molten metal enters the runner 3 through the pouring cup 1 and then splits into two streams. The molten metal flows through the first sprue 4 and the second sprue 5 to the two ends of the runner 3, and then flows into the upper runner 6 and the lower runner 7, respectively. The position of the pouring cup 1 on the runner 3 is close to the end connecting to the second sprue 5. Because the length of the first sprue 4 is shorter than that of the second sprue 5, the molten metal flows into the upper runner 6 and the lower runner 7 at similar times. Its flow rate in the upper runner 6 and the lower runner 7 is similar. Therefore, it can also perform top pouring and bottom pouring into the casting cavity 2 through the upper ingate 8 and the lower ingate 9 at similar times. This ensures that the molten metal that merges in the casting cavity has a similar temperature, which is conducive to precise control of the solidification rate in local areas, prevents the generation of porosity defects in the casting, and improves the quality of the casting.

[0012] As a preferred embodiment, since the upper horizontal runner 6 and the lower horizontal runner 7 are distributed in parallel and the upper horizontal runner 6 is higher than the lower horizontal runner 7, the upper end of the casting cavity 2 is connected to the upper horizontal runner 6 through the upper inner gate 8, and the lower end is connected to the lower horizontal runner 7 through the lower inner gate 9. Therefore, the casting cavity 2 is inclinedly connected between the upper horizontal runner 6 and the lower horizontal runner 7. A venting rod 10 is connected between the upper inner gate 8 and the pouring cup 1. When the molten metal is injected along the inner side of the casting cavity, the air in the casting cavity 2 can be smoothly discharged upward through the venting rod 10, avoiding the difficulty of gas escaping in the planar position and improving the quality of the casting.

[0013] As a preferred embodiment, the first sprue 4 is connected to the middle of the upper sprue 6, and the second sprue 5 is connected to the middle of the lower sprue 7. The center lines of the first sprue 4 and the second sprue 5 are located on the same plane. Several casting cavities 2 are symmetrically distributed on both sides of the first sprue 4 and the second sprue 5. After the molten metal flows into the upper sprue 6 and the lower sprue 7, it can be evenly poured into the casting cavities 2 on both sides, which is conducive to improving the consistency of casting quality.

Claims

1. A dual-channel mixing pump body casting system, comprising a pouring cup and several casting cavities, characterized in that: The bottom of the pouring cup is provided with a horizontal runner, and the two ends of the horizontal runner are respectively connected to a first straight runner and a second straight runner. The bottom of the first straight runner is connected to an upper horizontal runner, and the bottom of the second straight runner is connected to a lower horizontal runner. The upper horizontal runner is provided with several upper ingates, and the lower horizontal runner is provided with several lower ingates. The upper end of the casting cavity is connected to the upper ingates, and the lower end is connected to the lower ingates.

2. The dual-channel mixing pump body casting system according to claim 1, characterized in that: The upper and lower horizontal runners are distributed in parallel, and the casting cavity is inclinedly connected between the two. A venting rod is connected between the upper ingate and the pouring cup.

3. The dual-channel mixing pump body casting system according to claim 1 or 2, characterized in that: The first sprue is connected to the middle of the upper runner, and the second sprue is connected to the middle of the lower runner. The center lines of the first sprue and the second sprue are located on the same plane, and several casting cavities are symmetrically distributed on both sides of the first sprue and the second sprue.

4. The dual-channel mixing pump body casting system according to claim 1, characterized in that: The pouring cup is positioned on the runner close to the end connecting to the second runner, and the first runner is shorter than the second runner.

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