Anti-blocking liquid metal electromagnetic pump

Abstract

The utility model provides a kind of anti-blocking liquid metal electromagnetic pump and its anti-blocking method, including pump core, first sleeve, second sleeve and liquid collecting tank, first sleeve and second sleeve between have pumping channel, the upper end of first sleeve and second sleeve is fixed in liquid collecting tank, pumping channel and liquid collecting tank vertically communicate, one side of liquid collecting tank has overflow tank, liquid collecting tank and overflow tank horizontally communicate, pump core is located in second sleeve, and pump core upper end is located in liquid collecting tank, and there is travelling wave magnetic field generating assembly in pump core, and the upper end of travelling wave magnetic field generating assembly is not lower than overflow tank bottom.The utility model provides a kind of anti-blocking liquid metal electromagnetic pump and its anti-blocking method, by adjusting the position of iron core in pump core, cooperate current reversal, can pump back container with aluminium liquid in pumping channel mouth in reverse, avoid blocking pumping channel mouth.

Description

Technical Field

[0001] This utility model relates to liquid metal electromagnetic pumps, specifically to an anti-clogging liquid metal electromagnetic pump. Background Technology

[0002] Patent CN117543856B and patent application CN117559721A disclose a liquid metal electromagnetic pump, including a pump core, a first sleeve, and a second sleeve. A pumping channel exists between the first and second sleeves. The pump core is located in the second sleeve, and a collection tank is located at the upper end of both sleeves. When this electromagnetic pump is used to pump molten aluminum, after the pump stops, the residual molten aluminum in the collection tank slowly flows back towards the outlet of the pumping channel, with some flowing back into the pumping channel. Subsequently, the remaining molten aluminum solidifies and blocks the upper end of the pumping channel, causing the electromagnetic pump to malfunction. Furthermore, sometimes slag in the molten aluminum adheres to the inner wall of the pumping channel, which can also eventually block the channel. Utility Model Content

[0003] The purpose of this invention is to provide an anti-clogging liquid metal electromagnetic pump and an anti-clogging method for the liquid electromagnetic pump, so as to eliminate the defect of existing liquid metal electromagnetic pumps being prone to clogging.

[0004] To achieve the aforementioned objectives, the technical solution of this utility model is as follows: A clog-resistant liquid metal electromagnetic pump includes a pump core, a first sleeve, a second sleeve, and a collection tank. A pumping channel is provided between the first and second sleeves. The upper ends of the first and second sleeves are fixed to the collection tank. The pumping channel is vertically connected to the collection tank. An overflow tank is provided on one side of the collection tank. The collection tank and the overflow tank are horizontally connected. The pump core is located in the second sleeve, and the upper end of the pump core is located in the collection tank. A traveling wave magnetic field generating component is provided in the pump core. The upper end of the traveling wave magnetic field generating component is not lower than the bottom of the overflow tank.

[0005] Furthermore, the traveling wave magnetic field generating component includes an axial iron core, several radial iron cores, and several coils. The radial iron cores are fixed on the axial iron cores, and the coils are located between the radial iron cores. The upper end of the uppermost radial iron core is not lower than the bottom of the overflow groove.

[0006] Furthermore, the bottom of the overflow tank near the collection tank slopes upwards, and the upper end of the traveling wave magnetic field generating component is not lower than the upwardly sloping bottom of the overflow tank. After the electromagnetic pump stops, the molten aluminum flows to the other end of the overflow tank under the action of gravity, which can minimize the amount of molten aluminum remaining at the pumping channel outlet.

[0007] This utility model also provides a method for preventing blockage of a liquid metal electromagnetic pump, including setting the upper end of the traveling wave magnetic field generating component in the pump core to be no lower than the bottom of the overflow tank; when the electromagnetic pump pumps liquid metal, the generated traveling wave magnetic field moves upward; after the electromagnetic pump stops pumping, the current in the pump core is reversed for a period of time, so that the generated traveling wave magnetic field moves downward and pumps the aluminum liquid at the pumping channel inlet back to the container holding the aluminum liquid, thereby preventing the aluminum liquid from accumulating at the pumping channel inlet and causing blockage of the pumping channel.

[0008] This utility model also provides another improved method for preventing blockage of a liquid metal electromagnetic pump, including setting the upper end of the traveling wave magnetic field generating component in the pump core to be no lower than the bottom of the overflow tank; when the electromagnetic pump pumps liquid metal, the generated traveling wave magnetic field is intermittently alternated between moving upward and downward, so that the liquid metal repeatedly washes the inner wall of the pumping channel, thereby washing away the slag attached to the inner wall of the pumping channel and preventing slag from accumulating and depositing on the inner wall of the pumping channel and causing blockage; after the electromagnetic pump stops pumping, the current in the pump core is reversed for a period of time, so that the generated traveling wave magnetic field moves downward and pumps the aluminum liquid at the pumping channel inlet back to the container holding the aluminum liquid.

[0009] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This invention relates to an anti-clogging liquid metal electromagnetic pump and its anti-clogging method. By adjusting the position of the iron core in the pump core and coordinating with current reversal, the molten aluminum at the pumping channel inlet can be pumped back to the container in the reverse direction, preventing blockage of the pumping channel inlet. The intermittent upward and downward reversal of the traveling wave magnetic field allows the molten aluminum to repeatedly flush the inner wall of the pumping channel, preventing slag in the molten aluminum from accumulating on the inner wall of the pumping channel. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the liquid metal electromagnetic pump structure in Embodiment 1 of this utility model. Detailed Implementation

[0011] Example

[0012] like Figure 1 As shown, an anti-clogging liquid metal electromagnetic pump includes a pump core, a first sleeve 1, a second sleeve 2, and a collection tank 3. A pumping channel 4 is provided between the first sleeve 1 and the second sleeve 2. The upper ends of the first sleeve 1 and the second sleeve 2 are fixed to the collection tank 3. The pumping channel 4 is vertically connected to the collection tank 3. An overflow groove 5 is provided on one side of the collection tank 3, and the collection tank 3 and the overflow groove 5 are horizontally connected. The pump core is located in the second sleeve 2, and its upper end is located within the collection tank 3. The pump core includes an axial iron core 6, several radial iron cores 7, and several coils 8. The radial iron cores 7 are fixed to the axial iron cores 6, and the coils 8 are located between the radial iron cores 7. The uppermost radial iron core is not lower than the bottom of the overflow groove 5.

[0013] When the electromagnetic pump pumps liquid metal, the generated traveling wave magnetic field moves upward. After the electromagnetic pump stops pumping, the current in the pump core is reversed for a period of time, causing the generated traveling wave magnetic field to move downward and pump the molten aluminum at the pumping channel inlet back to the container holding the molten aluminum, thus preventing the molten aluminum from accumulating at the pumping channel inlet and causing blockage of the pumping channel.

[0014] Further, the bottom of the overflow tank 5 near the collection tank 3 slopes upward, and the uppermost radial core is not lower than the upward-sloping bottom of the overflow tank 5. After the electromagnetic pump stops, the molten aluminum flows to the other end of the overflow tank 5 under the action of gravity, which can minimize the amount of molten aluminum remaining at the pumping channel outlet.

[0015] Example

[0016] Another improved method for preventing clogging of liquid metal electromagnetic pumps includes: when the electromagnetic pump is pumping liquid metal, the generated traveling wave magnetic field is intermittently alternated between upward and downward movement, causing the liquid metal to repeatedly flush the inner wall of the pumping channel, thereby washing away the slag adhering to the inner wall of the pumping channel and preventing slag from accumulating and depositing on the inner wall of the pumping channel and causing blockage; after the electromagnetic pump stops pumping, the current in the pump core is reversed for a period of time, causing the generated traveling wave magnetic field to move downward and pump the aluminum liquid at the pumping channel opening back to the container holding the aluminum liquid.

Claims

1. A clog-resistant liquid metal electromagnetic pump, comprising a pump core, a first sleeve, a second sleeve, and a collection tank, wherein a pumping channel is provided between the first and second sleeves, the upper ends of the first and second sleeves are fixed to the collection tank, the pumping channel is vertically connected to the collection tank, and an overflow groove is provided on one side of the collection tank, the collection tank and the overflow groove are horizontally connected, characterized in that, The pump core is located in the second sleeve, and the upper end of the pump core is located in the liquid collection tank. The pump core has a traveling wave magnetic field generating component, and the upper end of the traveling wave magnetic field generating component is not lower than the bottom of the overflow tank.

2. A non-clogging liquid metal electromagnetic pump according to claim 1, characterized in that, The traveling wave magnetic field generating component includes an axial iron core, several radial iron cores, and several coils. The radial iron cores are fixed on the axial iron cores, and the coils are located between the radial iron cores. The uppermost radial iron core is not lower than the bottom of the overflow groove.

3. A non-clogging liquid metal electromagnetic pump according to claim 1 or 2, characterised in that, The bottom of the overflow tank near the liquid collection tank slopes upward, and the upper end of the traveling wave magnetic field generating component is not lower than the upward-sloping bottom of the overflow tank.

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