Aluminum solution impurity content and particle size detection system

Abstract

The utility model discloses a kind of aluminium solution impurity content and granularity detection system, it is related to the technical field of aluminium solution detection, the utility model aims at solving the problem of aluminium solution impurity detection inaccuracy, the utility model includes aluminium cylinder, vacuum cylinder is arranged in the aluminium cylinder, the bottom of vacuum cylinder is set below aluminium solution liquid level, micropore is opened on the lateral wall of vacuum cylinder, so that the aluminium solution in the aluminium cylinder flows into the vacuum cylinder, positive electrode is arranged in the vacuum cylinder, negative electrode is arranged in the aluminium cylinder, the positive electrode and the negative electrode are commonly connected with a power supply, and the positive electrode of the positive electrode is connected with the anode of power supply, the negative electrode is connected with the cathode of power supply, resistance R is further connected on the wire between the anode and the positive electrode B ; resistance is connected on the wire between the cathode and the negative electrode Data signal processor.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum solution detection, specifically to an aluminum solution impurity content and particle size detection system. Background Technology

[0002] The detection of impurity content and particle size in molten aluminum solution usually refers specifically to non-metallic inclusions in the molten aluminum. The detection process mostly adopts vacuum filtration, which involves filtering the aluminum solution through a filter plate and judging the impurity content in the aluminum solution by the filtration time. However, this detection method cannot accurately detect the particle size of impurities, and the detection of impurity content also has a large error. Utility Model Content

[0003] To address the aforementioned problem of inaccurate detection of impurities in aluminum solution, this invention proposes an aluminum solution impurity content and particle size detection system. The system includes an aluminum cylinder containing aluminum solution, with a vacuum cylinder inside. The bottom of the vacuum cylinder extends below the surface of the aluminum solution. Micropores are formed on the side wall of the vacuum cylinder to allow the aluminum solution in the aluminum cylinder to flow into it. A positive electrode is positioned inside the vacuum cylinder, contacting the aluminum solution within it. A negative electrode is also positioned inside the aluminum cylinder, contacting the aluminum solution in the vacuum cylinder. Both the positive and negative electrodes are connected to a power source, with the positive electrode connected to the positive terminal and the negative electrode connected to the negative terminal. A resistor R is connected to the wire between the positive and negative electrodes. B A data signal processor is connected to the wire between the negative electrode and the negative electrode to detect pulse signals.

[0004] A further feature of this invention is that a bandpass filter is connected to the wire between the negative electrode and the negative electrode, an amplifier is connected to the output of the bandpass filter, the output of the amplifier is connected to the data signal processor, and the data signal processor is connected to a host computer for operation.

[0005] A further feature of this invention is that the bandpass filter is also connected to the resistor R. B The positive terminal is connected, and the bandpass filter and the resistor R are connected. B A switch is installed on the wire.

[0006] The beneficial effects of this utility model are as follows:

[0007] By setting micropores, the positive and negative electrodes can be connected using molten aluminum, allowing current to flow from the positive electrode to the negative electrode and back to the negative terminal of the power supply. As the vacuum chamber is gradually evacuated, the molten aluminum inside the aluminum chamber flows into the vacuum chamber through the micropores. When impurity particles pass through the micropores, they occupy the volume of the conductive fluid in the micropores, causing the resistance at the opening of the micropores to temporarily increase. This causes fluctuations in the pulse signal in the circuit. The content of impurities in the molten aluminum can be determined based on the fluctuations in the pulses, and the particle size of the impurities can be determined based on the amplitude of the pulse fluctuations. This makes the detection more accurate. Attached Figure Description

[0008] Figure 1 A schematic diagram of the structure of this utility model is shown.

[0009] Reference numerals: 1. Aluminum cylinder; 11. Negative electrode; 2. Vacuum cylinder; 21. Micropore; 22. Positive electrode; 3. Power supply; 4. Data signal processor; 5. Bandpass filter; 6. Amplifier; 7. Main unit; 8. Switch. Detailed Implementation

[0010] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0011] This invention proposes a system for detecting the impurity content and particle size of aluminum solution. It includes an aluminum cylinder 1 for holding the aluminum solution, and a vacuum cylinder 2 inside the aluminum cylinder 1. The bottom of the vacuum cylinder 2 extends below the surface of the aluminum solution. A vacuum port on the vacuum cylinder 2 is connected to a vacuum pumping device for evacuating the vacuum cylinder 2. Micro-holes 21 are formed on the side wall of the vacuum cylinder 2, also below the surface of the aluminum solution, allowing the aluminum solution in the aluminum cylinder 1 to enter the vacuum cylinder 2 through the micro-holes 21. This evacuation process lowers the pressure inside the vacuum cylinder 2 compared to atmospheric pressure, thereby allowing the aluminum solution to be drawn from the aluminum cylinder 1 into the vacuum cylinder 2 through the micro-holes 21.

[0012] A positive electrode 22 is also inserted inside the vacuum cylinder 2. One end of the positive electrode 22 is inserted into the vacuum cylinder 2 and contacts the aluminum solution inside the vacuum cylinder 2. The other end of the positive electrode 22 is located on the outside of the vacuum cylinder 2. A negative electrode 11 is inserted inside the aluminum cylinder 1. The lower end of the negative electrode 11 contacts the aluminum solution inside the aluminum cylinder 1. The top end of the negative electrode 11 is located above the surface of the aluminum solution.

[0013] The tops of the positive electrode 22 and the negative electrode 11 are electrically connected to a power source 3. The positive terminal of the power source 3 is electrically connected to the top of the positive electrode 22, and the negative terminal of the power source 3 is electrically connected to the negative electrode 11. Thus, the current output by the power source 3 can flow along the positive electrode 22 to contact the aluminum solution, and then flow to the negative electrode 11 under the conduction of the aluminum solution, and then return to the negative terminal of the power source 3, forming a circuit.

[0014] A resistor RB is connected in series on the wire between the positive terminal of power supply 3 and the positive electrode 22 to prevent short circuits in the surface circuit.

[0015] A data signal processor 4 is electrically connected to the wire between the negative terminal of power supply 3 and the negative electrode 11. The data signal processor 4 is a DSP microprocessor, which is used to detect, process and display the electrical pulse signals in the circuit.

[0016] A bandpass filter 5 is electrically connected to the wire between the negative terminal of power supply 3 and the negative electrode 11. The bandpass filter 5 allows waves of a specific frequency band to pass through while shielding devices of other frequency bands. In other words, the bandpass filter 5 attenuates all frequencies outside the passband, thereby making the detected point pulse signal more accurate.

[0017] The output of bandpass filter 5 is electrically connected to amplifier 6. Amplifier 6 amplifies the detected electrical pulse signal, making the amplified signal easier to observe. The output of amplifier 6 is connected to data signal processor 4. The filtered and amplified electrical pulse signal is transmitted to data signal processor 4 for analysis and processing. The output of data signal processor 4 is electrically connected to host computer 7, which is an industrial control computer. The electrical pulse signal processed by data signal processor 4 can be displayed on the industrial control computer for user analysis and judgment.

[0018] The bandpass filter 5 is also electrically connected to the positive terminal of the resistor RB, and a switch 8 is installed on the wire connecting the bandpass filter 5 and the resistor RB to detect voltage pulses between the positive electrode 22 and the negative electrode 11.

[0019] Detection process: First, the vacuum cylinder 2 is evacuated so that the aluminum solution in the aluminum cylinder 1 enters the vacuum cylinder 2 through the micropores 21 and the aluminum solution in the vacuum cylinder 2 can come into contact with the positive electrode 22.

[0020] Then, the vacuum cylinder 2 is continuously evacuated, causing the molten aluminum in the aluminum cylinder 1 to continuously flow into the vacuum cylinder 2 through the micropores 21. During this flow, impurities in the molten aluminum also flow into the micropores 21 along with the molten aluminum. When impurities enter the micropores 21, they occupy the volume of the conductive fluid, i.e., the volume of the molten aluminum within the micropores 21, thus causing a temporary increase in resistance within the micropores 21. When a current is applied, this change in resistance generates a voltage pulse on both sides of the orifice, the duration of which is the passage time of the impurities.

[0021] The potential generated by the constant current changes with the resistance change each time an impurity passes through the micropore 21. The detection circuit determines the size, or particle size, of the impurity based on the voltage change caused by its presence. The magnitude of the change depends on the volume of the impurity.

[0022] In summary, by setting micropores 21, this utility model enables the positive electrode 22 and the negative electrode 11 to be connected using aluminum solution, allowing current to flow from the positive electrode 22 to the negative electrode 11 and back to the negative terminal of the power supply 3. When the vacuum cylinder 2 is gradually evacuated, the aluminum solution in the aluminum cylinder 1 flows into the vacuum cylinder 2 through the micropores 21. When impurity particles pass through the micropores 21, they occupy the conductive fluid volume of the micropores 21, causing the resistance at the opening of the micropores 21 to temporarily increase, which in turn causes the pulse signal in the circuit to fluctuate. The content of impurities in the aluminum solution can be determined based on the pulse fluctuation, and the particle size of the impurities can be determined based on the amplitude of the pulse fluctuation, thus making the detection more accurate.

[0023] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0024] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0027] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A system for detecting the impurity content and particle size of aluminum solution, characterized in that: The device includes an aluminum cylinder (1) containing molten aluminum, and a vacuum cylinder (2) inside the aluminum cylinder (1). The bottom of the vacuum cylinder (2) extends below the surface of the molten aluminum. Microholes (21) are provided on the side wall of the vacuum cylinder (2) to allow the molten aluminum in the aluminum cylinder (1) to flow into the vacuum cylinder (2). A positive electrode (22) is provided inside the vacuum cylinder (2) and is in contact with the molten aluminum inside the vacuum cylinder (2). A negative electrode (11) is provided inside the aluminum cylinder (1) and is... Electrode (11) is in contact with the aluminum solution inside the vacuum cylinder (2). The positive electrode (22) and the negative electrode (11) are connected to a power supply (3). The positive electrode (22) is connected to the positive terminal of the power supply (3), and the negative electrode (11) is connected to the negative terminal of the power supply (3). A resistor RB is also connected to the wire between the positive electrode and the positive electrode (22). A data signal processor (4) is connected to the wire between the negative electrode and the negative electrode (11) for detecting pulse signals.

2. The aluminum solution impurity content and particle size detection system according to claim 1, characterized in that: A bandpass filter (5) is connected to the wire between the negative electrode and the negative electrode (11). An amplifier (6) is connected to the output of the bandpass filter (5). The output of the amplifier (6) is connected to the data signal processor (4). The data signal processor (4) is connected to a host computer (7) for operation.

3. The aluminum solution impurity content and particle size detection system according to claim 2, characterized in that: The bandpass filter (5) is also connected to the positive terminal of the resistor RB, and a switch (8) is installed on the wire connecting the bandpass filter (5) and the resistor RB.

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