An electromagnetic and pneumatic filling system
Patent Information
- Application Number
- CN202521985423.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-16
AI Technical Summary
然而，采用压缩空气充型的方式，其压力波动较大，难以精确控制压铸工艺的关键参数，压缩空气充型延迟大，反应速度慢，精度控制难
本实用新型电磁和气压的充型系统，其巧妙地划分为前后两个独立型腔，并借助电磁输送泵实现型腔A和型腔B之间的无缝连接。其中，型腔A专用于液态金属的保温与储存，并配备了炉门等设施，以便于液态金属的添加；型腔B则与模具型腔紧密相连，并通过引入压缩空气来实现液态金属的保压功能。本实用新型将型腔A中的液态金属通过电磁输送泵的电磁力作用顺畅地转移至型腔B中，使得液态金属的流动不再依赖于压缩空气的压力，充型过程极为平稳，有效避免了紊流和卷气等问题的产生，从而确保了金属液的高品质，减少了金属液中的气体和渣质含量，具有使铝液更加纯净、冲型平稳、无波动、快速响应等优点。
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Figure CN224737268U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a filling system for a heat preservation furnace, specifically an electromagnetic and pneumatic filling system, mainly used for filling heat preservation furnaces. Background Technology
[0002] Traditionally, low-pressure casting uses compressed air for filling and holding the mold. This process uses the pressure of compressed air to force molten metal from a holding furnace into the mold and maintain a certain pressure until the molten metal solidifies. However, compressed air filling suffers from significant pressure fluctuations, making it difficult to precisely control key parameters of the die-casting process. It also has a long filling delay, slow reaction speed, and is difficult to control precisely. During the filling stage, turbulence and air entrapment are prone to occur, all of which can negatively impact product quality. Furthermore, the continuous input and output of compressed air affects the heat preservation effect of the holding furnace, leading to significant temperature fluctuations in the molten metal. For castings with complex shapes, varying wall thicknesses, or high quality requirements, relying solely on compressed air filling often fails to ensure the forming quality and dimensional accuracy of the casting.
[0003] Therefore, this utility model is proposed. Utility Model Content
[0004] To address the aforementioned technical problems in the prior art, the purpose of this utility model is to provide an electromagnetic and pneumatic filling system that achieves seamless connection between cavity A and cavity B by means of an electromagnetic transfer pump. Liquid metal in cavity A is smoothly transferred to cavity B by the electromagnetic force of the electromagnetic transfer pump, so that the flow of liquid metal no longer depends on the pressure of compressed air. The filling process is extremely stable, effectively avoiding problems such as turbulence and air entrapment, thereby ensuring the high quality of the molten metal and reducing the gas and slag content in the molten metal.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: An electromagnetic and pneumatic filling system includes cavity A and cavity B, wherein cavity B is connected to a mold cavity via a riser pipe, and cavity A and cavity B are seamlessly connected via an electromagnetic delivery pump.
[0006] The cavity B is equipped with a shut-off valve.
[0007] Cavity B is equipped with compressed air inlet and outlet.
[0008] The beneficial effects of this utility model are as follows: This invention relates to an electromagnetic and pneumatic filling system, cleverly divided into two independent cavities, Cavity A and Cavity B, seamlessly connected by an electromagnetic transfer pump. Cavity A is dedicated to the heat preservation and storage of liquid metal and is equipped with a furnace door for easy addition of liquid metal. Cavity B is tightly connected to the mold cavity and uses compressed air to maintain the pressure of the liquid metal. This invention smoothly transfers the liquid metal from Cavity A to Cavity B via the electromagnetic force of the electromagnetic transfer pump, making the flow of liquid metal independent of compressed air pressure. The filling process is extremely stable, effectively avoiding turbulence and air entrapment, thus ensuring high-quality molten metal, reducing the gas and slag content in the molten metal, and offering advantages such as purer molten aluminum, smoother filling, no fluctuations, and rapid response. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Among them, 1 is cavity A, 2 is cavity B, 3 is electromagnetic transfer pump, 4 is liquid riser pipe, 5 is mold cavity, 6 is shut-off valve, 7 is compressed air inlet and outlet, and 8 is aluminum liquid. Detailed Implementation
[0010] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.
[0011] like Figure 1As shown, the electromagnetic and pneumatic filling system of this invention includes cavity A1 and cavity B2, which are seamlessly connected by an electromagnetic transfer pump 3. Cavity A1 is specifically used for the heat preservation and storage of liquid metal (such as molten aluminum 8), while cavity B2 is tightly connected to the mold cavity 5 via a riser pipe 4, allowing the molten metal in cavity B2 to enter the mold through the riser pipe 4. Cavity B2 also has a compressed air inlet and outlet 7, which introduces compressed air to achieve the pressure-holding function of the liquid metal. In cavity A1, the liquid metal is smoothly transferred to cavity B2 by the electromagnetic force of the electromagnetic transfer pump 3. Therefore, the function of the electromagnetic transfer pump 3 is to fill and lift the liquid, stabilizing the rise of the liquid level. In this process, the flow of liquid metal no longer depends on the pressure of compressed air, but is directly driven by the electromagnetic force applied to the liquid metal by the electromagnetic transfer pump 3, significantly reducing the consumption of compressed air and effectively reducing the emission of high-temperature gases. Furthermore, the electromagnetic force is controlled directly by adjusting the current, thereby precisely controlling the filling speed with fast response and minimal delay. Once the mold cavity 5 is filled with molten metal, the electromagnetic transfer pump 3 immediately stops working, and then compressed air is introduced into cavity B2 to maintain pressure. The increased air pressure ensures the density of the product. A shut-off valve 6 is installed at the bottom of cavity B2. During pressure maintenance, the electromagnetic transfer pump 3 stops operating, and compressed air is introduced into cavity B2 to maintain pressure until the molten metal inside the mold is completely formed.
[0012] This invention eliminates the need to introduce air into cavity A1 during the filling stage, reducing heat loss from the high-temperature molten metal. Furthermore, the two cavities are independently insulated, further minimizing heat loss. The filling process is extremely smooth, effectively preventing turbulence and air entrapment, thus ensuring high-quality molten metal and reducing the gas and slag content in the molten metal.
[0013] The above embodiments are only used to explain the inventive concept of this utility model, and are not intended to limit the protection of this utility model. Any non-substantial modifications made to this utility model using this concept should fall within the protection scope of this utility model.
Claims
1. An electromagnetic and pneumatic filling system, characterized by: It includes cavity A and cavity B, cavity B is connected to the mold cavity through a riser pipe, and cavity A and cavity B are seamlessly connected by an electromagnetic delivery pump.
2. The electromagnetic and pneumatic filling system of claim 1, wherein: The cavity B is equipped with a shut-off valve.
3. The electromagnetic and pneumatic filling system of claim 1, wherein: Cavity B is equipped with compressed air inlet and outlet.