A counter-gravity casting device using an electromagnetic pump

Abstract

The present invention relates to the technical field of casting equipment, and in particular to a counter-gravity casting equipment using an electromagnetic pump, comprising a machine body and a heat preservation furnace, a vacuum pump, a first heat preservation chamber, and a second heat preservation chamber installed on the machine body. A first mold and a second mold are provided on the machine body, the first heat preservation chamber is connected to the first mold, and the second heat preservation chamber is connected to the second mold. The counter-gravity casting equipment using an electromagnetic pump of the present invention cooperates with the heat preservation furnace by providing the first heat preservation chamber and the second heat preservation chamber, and by creating a negative pressure environment in the heat preservation furnace, the first heat preservation chamber, the second heat preservation chamber, the first mold, and the second mold, thereby avoiding the presence of gas in the first mold and the second mold, and utilizing the suction force of the negative pressure in the heat preservation furnace to enable the molten metal to more smoothly fill the cavity of the first mold and the cavity of the second mold, thereby reducing the formation of pores and improving the quality of the casting after molding.

Description

Technical Field

[0001] The present invention relates to the technical field of casting equipment, and in particular to a counter-gravity casting equipment using an electromagnetic pump. Background Art

[0002] Counter-gravity casting, as an advanced casting process, is crucial for producing high-quality, high-performance castings. Electromagnetic pumps, which can be categorized as DC or AC, play a key role in this process. DC pumps, with their higher drive efficiency compared to AC pumps, offer unique advantages in counter-gravity casting of large aluminum alloy castings.

[0003] During the counter-gravity casting process, existing DC electromagnetic pumps employ DC electrodes and electromagnets placed in a riser tube. The electromagnets generate an electromagnetic field between the electrodes. When a DC current flows between the electrodes and the molten metal (aluminum), the aluminum generates an upward Ampere force. Driven by the electromagnetic pump, the aluminum in the holding furnace flows upward, is injected into the mold cavity through the riser tube, and eventually solidifies.

[0004] However, during the casting process, the presence of gas within the mold causes crystallization under pressure, leaving the gas in the metal in a non-porous form. This is extremely harmful to castings operating in high-temperature environments, severely affecting their dimensional stability and strength, reducing the service life and reliability of the castings, and potentially causing deformation, cracking, and other failures during use. Furthermore, the high back pressure of the gas within the mold affects the filling capacity of the liquid metal. Furthermore, the oxide film formed on the surface of the molten aluminum is not only drawn into the mold but also greatly increases its surface tension, affecting the filling of thin-walled areas of the casting. This can lead to quality issues such as material shortages and incompleteness in these thin-walled areas, seriously affecting the quality and performance of the casting. Summary of the Invention

[0005] The present invention provides a counter-gravity casting device using an electromagnetic pump to solve the problem that in the existing casting equipment, the quality and performance of the casting are adversely affected by the presence of gas in the mold during the casting process.

[0006] The present invention adopts a counter-gravity casting device using an electromagnetic pump, which adopts the following technical solution: a counter-gravity casting device using an electromagnetic pump, comprising a machine body and a heat-insulating furnace, a vacuum pump, a first heat-insulating chamber and a second heat-insulating chamber installed on the machine body, the first heat-insulating chamber being connected to the heat-insulating furnace through a first connecting pipe, the second heat-insulating chamber being connected to the heat-insulating furnace through a second connecting pipe, a first electromagnetic pump being provided on the first connecting pipe, and a second electromagnetic pump being provided on the second connecting pipe; a first mold and a second mold being provided on the machine body, the first heat-insulating chamber being connected to the first mold, and the second heat-insulating chamber being connected to the second mold; molten metal is filled in the heat-insulating furnace; a vacuum pump is installed on the machine body, and the vacuum pump is used to evacuate the heat-insulating furnace, the first heat-insulating chamber, the second heat-insulating chamber, the first mold and the second mold; the casting of the counter-gravity casting device using the electromagnetic pump has a circulation arrangement The first stage, the second stage, the third stage and the fourth stage; in the first stage, the first electromagnetic pump is started to inject the molten metal in the first holding chamber into the first mold, and the second electromagnetic pump is turned off to allow the molten metal to flow back from the second holding chamber to the holding furnace; in the second stage, the holding furnace, the second holding chamber and the second mold are all in a vacuum state; the first electromagnetic pump is started to restrict the molten metal from flowing back from the first holding chamber to the holding furnace, and the second electromagnetic pump is turned off; in the third stage, the second electromagnetic pump is started to inject the molten metal in the second holding chamber into the second mold, and the first electromagnetic pump is turned off to allow the molten metal to flow back from the first holding chamber to the holding furnace; in the fourth stage, the holding furnace, the first holding chamber and the first mold are all in a vacuum state; the second electromagnetic pump is started to restrict the molten metal from flowing back from the second holding chamber to the holding furnace, and the first electromagnetic pump is turned off.

[0007] Furthermore, a plurality of first heaters are provided in the insulation furnace.

[0008] Furthermore, a plurality of second heaters are provided in each of the first insulation chamber and the second insulation chamber.

[0009] Furthermore, the first heater and the second heater are both immersion heaters.

[0010] Furthermore, an air inlet is provided on the first connecting pipe and the second connecting pipe, and an air pump is provided on the machine body, which can ventilate the first connecting pipe or the second connecting pipe, and the gas flows toward one side of the insulation furnace in the first connecting pipe and the second connecting pipe.

[0011] Furthermore, the gas in the air pump is argon or nitrogen.

[0012] Furthermore, a first liquid outlet is provided on the first insulation chamber and communicated with the cavity of the first mold; a second liquid outlet is provided on the second insulation chamber and communicated with the cavity of the second mold.

[0013] Furthermore, the first liquid outlet is a conical structure, and in the vertical direction, the upper end of the first liquid outlet is larger and the lower end is smaller, and the structure of the second liquid outlet is the same as that of the first liquid outlet.

[0014] Furthermore, the first electromagnetic pump and the second electromagnetic pump are both DC electromagnetic pumps, and are both coated with a thermal insulation layer.

[0015] Furthermore, the volume of the first insulation chamber is smaller than that of the insulation furnace, and the inner wall thickness of the first insulation chamber is greater than that of the insulation furnace; the volume of the second insulation chamber is equal to that of the first insulation chamber, and the inner wall thickness of the second insulation chamber is equal to that of the first insulation chamber.

[0016] The beneficial effects of the present invention are: an anti-gravity casting equipment using an electromagnetic pump of the present invention cooperates with an insulation furnace by setting a first insulation chamber and a second insulation chamber, and creates a negative pressure environment in the insulation furnace, the first insulation chamber, the second insulation chamber, the first mold and the second mold. When the first mold connected to the first insulation chamber is subjected to anti-gravity casting and the second mold connected to the second insulation chamber is subjected to anti-gravity casting, the presence of gas in the first mold and the second mold can be avoided, thereby avoiding the gas from remaining in the molded casting in the form of non-pores, and avoiding the formation of an oxide film on the surface of the molten metal, thereby further preventing the oxide film from being brought into the first mold and the second mold to affect the quality and performance of the casting. During the cooling of the first mold, the second mold starts casting, and during the cooling of the second mold, the first mold starts casting, which shortens the casting time and improves the casting efficiency. After the cooling of the first mold is completed, by turning off the first electromagnetic pump, the suction force of the negative pressure in the insulation furnace can be used to make the molten metal in the first insulation chamber flow back to increase the pressure of the insulation furnace. Similarly, after the cooling of the second mold is completed, by turning off the second electromagnetic pump, the suction force of the negative pressure in the insulation furnace can be used to make the molten metal in the second insulation chamber flow back to increase the pressure of the insulation furnace, thereby making the molten metal more smoothly fill the cavity of the first mold and the cavity of the second mold, reducing the formation of air holes and improving the quality of the casting after molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the overall structure of an embodiment of a counter-gravity casting device using an electromagnetic pump according to the present invention;

[0019] Figure 2 This is a state diagram of a holding furnace performing liquid injection casting on a first mold according to an embodiment of a counter-gravity casting apparatus using an electromagnetic pump of the present invention;

[0020] Figure 3 This is a state diagram of a counter-gravity casting device using an electromagnetic pump according to an embodiment of the present invention, in which the molten metal in the first mold is cooling while the holding furnace is performing liquid injection casting on the second mold;

[0021] Figure 4 This is a state diagram of the first mold after cooling is completed in an embodiment of the counter-gravity casting equipment using an electromagnetic pump according to the present invention.

[0022] In the figure: 100, operating platform; 101, machine body; 110, first mold; 120, second mold; 200, holding furnace; 300, first holding chamber; 301, first liquid outlet; 310, first connecting pipe; 320, first electromagnetic pump; 400, second holding chamber; 401, second liquid outlet; 410, second connecting pipe; 420, second electromagnetic pump; 500, molten metal; 600, first heater; 700, second heater. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] An embodiment of the anti-gravity casting equipment using an electromagnetic pump of the present invention is as follows: Figures 1 to 4 shown.

[0025] A counter-gravity casting apparatus utilizing an electromagnetic pump comprises an operating platform 100, a machine body 101, a holding furnace 200 mounted on the machine body 101, a vacuum pump, a first holding chamber 300, and a second holding chamber 400. The first holding chamber 300 is connected to the holding furnace 200 via a first connecting pipe 310, and the second holding chamber 400 is connected to the holding furnace 200 via a second connecting pipe 410. A first electromagnetic pump 320 is provided on the first connecting pipe 310, and a second electromagnetic pump 420 is provided on the second connecting pipe 410. A first mold 110 and a second mold 120 are provided on the machine body 101. The first holding chamber 300 is connected to the first mold 110, and the second holding chamber 400 is connected to the second mold 120. Molten metal 500 is filled into the holding furnace 200. A vacuum pump is used to evacuate the holding furnace 200, the first holding chamber 300, the second holding chamber 400, the first mold 110, and the second mold 120. The vacuum pump is not shown in the accompanying drawings.

[0026] The casting of the anti-gravity casting equipment using the electromagnetic pump has a first stage, a second stage, a third stage and a fourth stage of a cyclic setting; in the first stage, the first electromagnetic pump 320 is started to inject the molten metal 500 in the first holding chamber 300 into the first mold 110, and the second electromagnetic pump 420 is turned off, allowing the molten metal 500 to flow back from the second holding chamber 400 to the holding furnace 200; in the second stage, the holding furnace 200, the second holding chamber 400 and the second mold 120 are all in a vacuum state; the first electromagnetic pump 320 is started to limit the molten metal 500 from the first holding chamber 300 to the first mold 110. refluxes into the holding furnace 200, and the second electromagnetic pump 420 is turned off; in the third stage, the second electromagnetic pump 420 is started to inject the molten metal 500 in the second holding chamber 400 into the second mold 120, and the first electromagnetic pump 320 is turned off, allowing the molten metal 500 to flow back from the first holding chamber 300 into the holding furnace 200; in the fourth stage, the holding furnace 200, the first holding chamber 300 and the first mold 110 are all in a vacuum state; the second electromagnetic pump 420 is started to limit the molten metal 500 from the second holding chamber 400 to flow back into the holding furnace 200, and the first electromagnetic pump 320 is turned off.

[0027] Specifically, the first electromagnetic pump 320 and the second electromagnetic pump 420 are both DC electromagnetic pumps. The first electromagnetic pump 320 and the second electromagnetic pump 420 are both covered with a thermal insulation layer, and the molten metal 500 is molten aluminum liquid.

[0028] This embodiment is provided with a heat preservation furnace 200, a vacuum pump, a first heat preservation chamber 300 and a second heat preservation chamber 400. When in use, the temperature of the heat preservation furnace 200 is first heated to a set value, and then the heat preservation furnace 200, the first heat preservation chamber 300 and the second heat preservation chamber 400 are filled with molten metal 500, and the liquid level of the molten metal 500 in the first heat preservation chamber 300 and the second heat preservation chamber 400 is maintained at an appropriate height. Figure 2 As shown, the first holding chamber 300 is located on the left side of the holding furnace 200 , and the second holding chamber 400 is located on the right side of the holding furnace 200 .

[0029] Then, the first mold 110 connected to the first holding chamber 300 is subjected to counter-gravity casting. At this time, the casting of the counter-gravity casting equipment using the electromagnetic pump is in the first stage. The first electromagnetic pump 320 is started, and the first electromagnetic pump 320 is used to inject the molten metal 500 in the first holding chamber 300 into the first mold 110. The first electromagnetic pump 320 is kept in operation to solidify the molten metal 500 under pressure, and the casting in the first mold 110 is allowed to cool. At this time, the second electromagnetic pump 420 is turned off. Figure 2 shown.

[0030] While waiting for the casting in the first mold 110 to cool, the casting of the anti-gravity casting equipment using an electromagnetic pump enters the second stage. The vacuum pump is used to evacuate the holding furnace 200, the second holding chamber 400 and the second mold 120 to extract the gas in the molten metal 500. Although the holding furnace 200 is in a vacuum state, the first electromagnetic pump 320 remains running (the first electromagnetic pump 320 causes the molten metal 500 in the holding furnace 200 to flow to the first holding chamber 300 to maintain pressure). Therefore, the molten metal 500 in the first holding chamber 300 will not flow back into the holding furnace 200.

[0031] Then, the second mold 120 connected to the second insulation chamber 400 is subjected to counter-gravity casting. The casting of the counter-gravity casting equipment using the electromagnetic pump reaches the third stage. The second electromagnetic pump 420 is started, and the second electromagnetic pump 420 is used to inject the molten metal 500 in the second insulation chamber 400 into the second mold 120, and the second electromagnetic pump 420 is kept in operation. During the counter-gravity casting process of the second mold 120 connected to the second insulation chamber 400, the insulation furnace 200, the second insulation chamber 400 and the second mold 120 are all in a vacuum state. This setting can avoid the presence of gas in the second mold 120, and thus avoid the gas remaining in the molded casting in the form of non-pores, and can also avoid the formation of an oxide film on the surface of the molten metal 500, which affects the quality and performance of the casting. See the attached Figure 3 shown.

[0032] After the second mold 120 is filled with the molten metal 500, the second electromagnetic pump 420 is kept running to allow the molten metal 500 to solidify and form under pressure, and wait for the casting in the second mold 120 to cool. At the same time, the casting in the first mold 110 has cooled down and no longer needs to be pressure maintained. At this time, the first mold 110 is removed and the first electromagnetic pump 320 is turned off. Under the action of the negative pressure in the insulation furnace 200, the molten metal 500 in the first insulation chamber 300 will quickly flow back into the insulation furnace 200, increasing the pressure in the insulation furnace 200. Under the action of pressure, the molten metal 500 can more smoothly fill the cavity of the second mold 120, reduce the formation of pores, and improve the quality of the casting after molding. See Appendix. Figure 4 shown.

[0033] While waiting for the casting in the second mold 120 to cool, the anti-gravity casting apparatus, using an electromagnetic pump, enters the fourth stage of casting, reconnecting the first mold 110 to the first holding chamber 300. A vacuum pump is used to evacuate the holding furnace 200, the first holding chamber 300, and the first mold 110, thereby extracting the gas from the molten metal 500. Although the holding furnace 200 is in a vacuum state, the second electromagnetic pump 420 remains in operation (directing the molten metal 500 in the holding furnace 200 to the second holding chamber 400 to maintain pressure). Therefore, the molten metal 500 in the second holding chamber 400 does not flow back into the holding furnace 200.

[0034] After the fourth stage, the casting process using the electromagnetic pump counter-gravity casting equipment returns to the first stage. The first electromagnetic pump 320 is activated, and the molten metal 500 in the first holding chamber 300 is injected into the first mold 110. The second electromagnetic pump 420 is deactivated, allowing the molten metal 500 to flow back from the second holding chamber 400 into the holding furnace 200. Similarly, since the holding furnace 200, the first holding chamber 300, and the first mold 110 are all in a vacuum state, this configuration prevents the presence of gas in the first mold 110, thereby preventing gas from remaining in the finished casting in a non-porous form. It also prevents the formation of an oxide film on the surface of the molten metal 500, which could affect the quality and performance of the casting. Furthermore, the pressure in the holding furnace 200 increases, allowing the molten metal 500 to more smoothly fill the cavity of the first mold 110 under the action of pressure, reducing the formation of pores and improving the quality of the finished casting. Casting can then be continued in a cyclical manner according to the above process.

[0035] That is, this embodiment sets the first insulation chamber 300 and the second insulation chamber 400 in cooperation with the insulation furnace 200, and creates a negative pressure environment in the insulation furnace 200, the first insulation chamber 300, the second insulation chamber 400, the first mold 110 and the second mold 120. When the first mold 110 connected to the first insulation chamber 300 and the second mold 120 connected to the second insulation chamber 400 are subjected to counter-gravity casting, the presence of gas in the first mold 110 and the second mold 120 can be avoided, thereby avoiding the gas from remaining in the molded casting in the form of non-pores, and avoiding the formation of an oxide film on the surface of the molten metal 500, thereby further preventing the oxide film from being brought into the first mold 110 and the second mold 120 to affect the quality and performance of the casting.

[0036] During the cooling process of the first mold 110, the second mold 120 starts casting, and during the cooling process of the second mold 120, the first mold 110 starts casting, which shortens the casting time and improves the casting efficiency. After the cooling of the first mold 110 is completed, by turning off the first electromagnetic pump 320, the suction force of the negative pressure in the insulation furnace 200 can be used to make the molten metal 500 in the first insulation chamber 300 flow back to increase the pressure of the insulation furnace 200. Similarly, after the cooling of the second mold 120 is completed, by turning off the second electromagnetic pump 420, the suction force of the negative pressure in the insulation furnace 200 can be used to make the molten metal 500 in the second insulation chamber 400 flow back to increase the pressure of the insulation furnace 200, thereby allowing the molten metal 500 to more smoothly fill the cavity of the first mold 110 and the cavity of the second mold 120, reducing the formation of air holes and improving the quality of the casting after molding.

[0037] In this embodiment, a plurality of first heaters 600 are provided in the holding furnace 200. The provision of the plurality of first heaters 600 can maintain the temperature of the molten metal 500 in the holding furnace 200, ensuring a high heating efficiency.

[0038] Several second heaters 700 are provided in both the first insulation chamber 300 and the second insulation chamber 400 . The provision of several second heaters 700 can also maintain the temperature of the molten metal 500 in the first insulation chamber 300 and the second insulation chamber 400 , thereby ensuring higher heating efficiency.

[0039] Furthermore, both the first heater 600 and the second heater 700 are immersion heaters.

[0040] In this embodiment, an air inlet is provided on both the first connecting pipe 310 and the second connecting pipe 410. An air pump is provided on the housing 101. The air pump can ventilate the first connecting pipe 310 or the second connecting pipe 410, and the air flows toward the holding furnace 200 in both the first connecting pipe 310 and the second connecting pipe 410. The air pump is not shown in the accompanying drawings.

[0041] Specifically, the gas in the air pump is an inert gas, specifically argon or nitrogen, which can prevent the aluminum liquid from being oxidized and ensure the stability of the aluminum liquid.

[0042] The air inlet can be opened or closed. When air intake is needed, the air inlet is opened so that the air pump can transport the gas. When air intake is not needed, the air inlet is closed to avoid affecting the transportation of the molten metal 500.

[0043] In this embodiment, air inlets are provided in the first connecting pipe 310 and the second connecting pipe 410. Taking the first connecting pipe 310 as an example, after the first mold 110 has cooled, the first electromagnetic pump 320 is turned off. The suction force of the negative pressure within the holding furnace 200 is then utilized to cause the molten metal 500 in the first holding chamber 300 to flow back into the holding furnace 200 through the first connecting pipe 310. At this time, air is ventilated into the first connecting pipe 310 by the air pump, and the gas is directed toward the holding furnace 200. This force of the molten metal 500 flowing back and the impact of the gas act together on the inner wall of the first connecting pipe 310. This arrangement is because, when the first connecting pipe 310 is conveying the molten metal 500, although the first electromagnetic pump 320 is coated with an insulation layer, the insulation effect is limited, and the molten metal 500 may still solidify and slag on the inner wall of the first connecting pipe 310. Therefore, the impact force causing the molten metal 500 to flow back and the force of the gas act together on the inner wall of the first connecting tube 310, thereby removing any solidified and drossing molten metal 500 from the inner wall of the first connecting tube 310. The solidified and drossing molten metal 500 on the inner wall of the first connecting tube 310 is then allowed to flow into the holding furnace 200 along with the molten metal 500, where it is heated and melted. The treatment method for solidified and drossing molten metal 500 on the inner wall of the second connecting tube 410 is the same as that for the first connecting tube 310, and will not be further described here.

[0044] After cleaning the solidified and slag-covered molten metal 500 on the first connecting tube 310 and the second connecting tube 410, it is also possible to prevent the molten metal 500 in the holding furnace 200 from bringing the solidified and slag-covered molten metal 500 on the first connecting tube 310 into the first mold 110 when the molten metal 500 in the holding furnace 200 is poured into the first mold 110. Similarly, it is also possible to prevent the molten metal 500 in the holding furnace 200 from bringing the solidified and slag-covered molten metal 500 on the second connecting tube 410 into the second mold 120 when the molten metal 500 in the holding furnace 200 is poured into the second mold 120, thereby further improving the quality of the casting.

[0045] In this embodiment, a first liquid outlet 301 is defined in the first holding chamber 300 and communicates with the cavity of the first mold 110. This allows the first electromagnetic pump 320 to pump the molten metal 500 into the first holding chamber 300 through the first connecting tube 310, whereupon the molten metal 500 can enter the cavity of the first mold 110 from the first holding chamber 300. A second liquid outlet 401 is defined in the second holding chamber 400 and communicates with the cavity of the second mold 120. This allows the second electromagnetic pump 420 to pump the molten metal 500 into the second holding chamber 400 through the second connecting tube 410, whereupon the molten metal 500 can enter the cavity of the second mold 120 from the second holding chamber 400.

[0046] Furthermore, the first liquid outlet 301 is a tapered structure, and in the vertical direction, the upper end of the first liquid outlet 301 is larger and the lower end is smaller. The structure of the second liquid outlet 401 is the same as that of the first liquid outlet 301 .

[0047] The first liquid outlet 301 and the second liquid outlet 401 are both configured as a tapered structure with a larger upper end and a smaller lower end, so as to facilitate the flow of the molten metal 500.

[0048] In this embodiment, the volume of the first holding chamber 300 is smaller than that of the holding furnace 200, and the inner wall thickness of the first holding chamber 300 is greater than that of the holding furnace 200. The volume of the second holding chamber 400 is equal to that of the first holding chamber 300, and the inner wall thickness of the second holding chamber 400 is equal to that of the first holding chamber 300.

[0049] By making the volume of the first holding chamber 300 smaller than that of the holding furnace 200 and the inner wall thickness of the first holding chamber 300 greater than that of the holding furnace 200, the thermal insulation performance of the first holding chamber 300 is better than that of the holding furnace 200, making the molten metal 500 less likely to solidify.

[0050] 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 principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A counter-gravity casting device using an electromagnetic pump, characterized in that: The invention comprises a machine body and a heat preservation furnace, a vacuum pump, a first heat preservation chamber and a second heat preservation chamber installed on the machine body, the first heat preservation chamber is connected to the heat preservation furnace through a first connecting pipe, the second heat preservation chamber is connected to the heat preservation furnace through a second connecting pipe, a first electromagnetic pump is provided on the first connecting pipe, and a second electromagnetic pump is provided on the second connecting pipe; a first mold and a second mold are provided on the machine body, the first heat preservation chamber is connected to the first mold, and the second heat preservation chamber is connected to the second mold; the heat preservation furnace is filled with molten metal; a vacuum pump is installed on the machine body, and the vacuum pump is used to evacuate the heat preservation furnace, the first heat preservation chamber, the second heat preservation chamber, the first mold and the second mold; an air inlet is provided on the first connecting pipe and the second connecting pipe, and an air pump is provided on the machine body, the air pump can ventilate the first connecting pipe or the second connecting pipe, and the gas flows toward one side of the heat preservation furnace in the first connecting pipe and the second connecting pipe, so that the solidified and slagging molten metal on the inner walls of the first connecting pipe and the second connecting pipe enters the heat preservation furnace for heating and melting; The casting of the anti-gravity casting equipment using an electromagnetic pump has a first stage, a second stage, a third stage and a fourth stage of a cyclic setting; in the first stage, the first electromagnetic pump is started to inject the molten metal in the first holding chamber into the first mold for solidification and molding, and the second electromagnetic pump is turned off to allow the molten metal to flow back from the second holding chamber to the holding furnace; in the second stage, the holding furnace, the second holding chamber and the second mold are all in a vacuum state; the first electromagnetic pump remains in operation to restrict the molten metal from flowing back from the first holding chamber to the holding furnace, and the second electromagnetic pump is turned off; after the cooling of the first mold is completed, the first electromagnetic pump is turned off and the suction force of the negative pressure in the holding furnace is used to make the molten metal in the first holding chamber flow back to the holding furnace through the first connecting pipe. At this time, the first connecting pipe is ventilated through the air pump, and the gas is made to flow toward one side of the holding furnace to make the molten metal flow back. The force and the impact force of the gas act together on the inner wall of the first connecting pipe; in the third stage, the second electromagnetic pump is started to inject the molten metal in the second insulation chamber into the second mold, and the first electromagnetic pump is turned off to allow the molten metal to flow back from the first insulation chamber to the insulation furnace; in the fourth stage, the insulation furnace, the first insulation chamber and the first mold are all in a vacuum state; the second electromagnetic pump remains in operation to limit the molten metal from flowing back from the second insulation chamber to the insulation furnace, and the first electromagnetic pump is turned off; after the cooling of the second mold is completed, the second electromagnetic pump is turned off and the suction force of the negative pressure in the insulation furnace is used to make the molten metal in the second insulation chamber flow back to the insulation furnace through the second connecting pipe. At this time, the second connecting pipe is ventilated through the air pump, and the gas flows toward one side of the insulation furnace, so that the force of the molten metal flowing back and the impact force of the gas act together on the inner wall of the second connecting pipe.

2. The anti-gravity casting equipment using an electromagnetic pump according to claim 1, characterized in that: A plurality of first heaters are arranged in the heat preservation furnace.

3. The anti-gravity casting equipment using an electromagnetic pump according to claim 2, characterized in that: A plurality of second heaters are provided in each of the first insulation chamber and the second insulation chamber.

4. The anti-gravity casting equipment using an electromagnetic pump according to claim 3, characterized in that: The first heater and the second heater are both immersion heaters.

5. The anti-gravity casting equipment using an electromagnetic pump according to claim 4, characterized in that: The gas in the air pump is argon or nitrogen.

6. The anti-gravity casting equipment using an electromagnetic pump according to claim 1, characterized in that: The first insulation chamber is provided with a first liquid outlet, which is communicated with the cavity of the first mold; the second insulation chamber is provided with a second liquid outlet, which is communicated with the cavity of the second mold.

7. The anti-gravity casting equipment using an electromagnetic pump according to claim 6, characterized in that: The first liquid outlet is a conical structure, and in the vertical direction, the upper end of the first liquid outlet is larger and the lower end is smaller. The structure of the second liquid outlet is the same as that of the first liquid outlet.

8. The anti-gravity casting equipment using an electromagnetic pump according to claim 1, characterized in that: The first electromagnetic pump and the second electromagnetic pump are both DC electromagnetic pumps, and are both covered with a thermal insulation layer.

9. The anti-gravity casting equipment using an electromagnetic pump according to claim 1, characterized in that: The volume of the first insulation chamber is smaller than that of the insulation furnace, and the inner wall thickness of the first insulation chamber is greater than that of the insulation furnace; the volume of the second insulation chamber is equal to that of the first insulation chamber, and the inner wall thickness of the second insulation chamber is equal to that of the first insulation chamber.

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