A device for automatically sucking a specific density molten liquid

Abstract

This invention discloses an automatic device for drawing in molten liquid of a specific density, comprising a pipe, a piston, a piston actuator, and a vent. The lower end of the pipe has a sealed port for controlling the intake and discharge of molten liquid. The vent, located on the pipe body, includes a one-way inlet and a one-way outlet. The piston is placed within the pipe cavity; when the piston moves to the sealed port, it blocks the port; when the piston moves upwards, it opens the sealed port to draw in molten liquid. The piston actuator is a pneumatic cylinder, controlling the piston's up-and-down movement within the pipe cavity. This invention uses atmospheric pressure controlled by the vent to push the target density molten liquid into the cavity, and then uses internal air pressure to precisely discharge the drawn-in molten liquid, ensuring that the molten liquid remains under precise pressure during the drawing, transport, and discharge processes, thereby preventing leakage and drawing failure.

Description

Technical Field

[0001] This utility model relates to the technical field of absorbing molten liquid of a specific density, and in particular to a device for automatically absorbing molten liquid of a specific density. Background Technology

[0002] In existing technologies, conventional liquid extraction devices struggle to accurately distinguish and selectively extract molten liquids of a target density in environments with various molten materials of different densities. Traditional manual extraction methods are prone to inaccurate extraction of the target density and volume due to human factors, especially in high-temperature smelting. Manual extraction is not only inefficient and susceptible to human error and harsh environments, but also poses potential health risks to operators. While some automated extraction devices exist on the market, most only perform simple extraction and transfer of molten liquid, lacking precise control over molten liquids of specific densities. Density differences can lead to non-target molten liquids entering the extraction device, reducing operational accuracy. Furthermore, existing devices may not effectively prevent contamination of the molten liquid within the chamber by non-target molten liquids or external environmental factors during extraction or transfer.

[0003] To address the aforementioned problems, the purpose of this invention is to provide an automatic device for extracting molten liquid of a specific density. Through specific negative pressure regulation and end port control, the device accurately extracts the target molten liquid, solving problems such as leakage or contamination of the molten liquid during extraction and collection, thereby ensuring the quality of the molten liquid and improving work efficiency. Summary of the Invention

[0004] To achieve the above functions, the technical solution adopted by this utility model is as follows:

[0005] An automatic device for drawing in molten liquid of a specific density, characterized in that: the device comprises a pipe, a piston, a piston actuator, and a vent; the lower end of the pipe is provided with a pipe sealing port for controlling the intake or discharge of molten liquid; the vent is located on the pipe body, preferably at the upper end of the pipe body, and includes a one-way inlet and a one-way outlet; the piston is placed in the pipe cavity, and when the piston moves to the pipe sealing port to block the pipe sealing port, when the piston moves to the upper end of the pipe, it opens the pipe sealing port to draw in molten liquid; the piston actuator is a pneumatic cylinder, a hydraulic cylinder, a motor, a chain, or other device, and the piston actuator controls the piston to move up and down within the pipe cavity.

[0006] The pipe cavity is also equipped with a piston rod, one end of which is connected to a piston driver and the other end is connected to a piston.

[0007] The one-way air inlet and one-way air outlet are controlled independently or uniformly by solenoid valves to open or close.

[0008] There are two different structural schemes for the pipeline and sealing port channel. First, the pipeline includes a pipeline cavity and a sealing port channel, with the sealing port located at the lower end of the sealing port channel. The inner diameter of the sealing port channel is smaller than the inner diameter of the pipeline cavity, and there is an inwardly recessed slope or arc-shaped locking mechanism between the pipeline cavity and the sealing port channel, or a connecting locking mechanism between the pipeline cavity and the pipeline opening. Second, the pipeline has a cavity structure, with the sealing port located at the lower end of the cavity.

[0009] The piston is provided with a locking body and an external pusher; when the piston moves to the sealing port of the pipeline to block the sealing port, the locking body is placed in the locking position; the external pusher is inserted into the inner cavity of the sealing port channel; or, the external pusher passes through the inner cavity of the sealing port channel and is partially exposed.

[0010] The inner wall of the pipe cavity is provided with a wall scraper on one or both sides; the wall scraper is connected to the piston rod.

[0011] The connection between the piston and the inner wall of the pipe cavity is made of high-precision sealing material.

[0012] The device is equipped with a cooling pipe at its upper end. The cooling pipe is placed inside the pipe cavity, or the cooling pipe is placed outside the pipe cavity, and the pipe cavity is connected to the cooling pipe and is provided with a coolant inlet and outlet.

[0013] The pipes, scrapers, and pistons are made of high-temperature corrosion-resistant materials.

[0014] A device for automatically drawing molten liquid of a specific density is provided. By controlling the unidirectional air inlet and unidirectional air outlet, the device achieves the conversion between negative and positive pressure inside the pipeline cavity. A piston actuator controls the movement of the piston inside the pipeline cavity to directly open or close the pipeline seal. This solution uses atmospheric pressure to push the molten liquid of the target density into the cavity, and then uses internal air pressure to accurately discharge the drawn molten liquid. This ensures that the molten liquid is always under a precise pressure environment during the process of drawing, transporting, and discharging the molten liquid, thereby avoiding molten liquid leakage and drawing failure.

[0015] The piston is equipped with a locking body and an external pusher. When the piston moves to the sealing port of the pipe and blocks the sealing port, the locking body is positioned in the locking position; at this time, the external pusher is inserted into the inner cavity of the sealing port channel, and may even pass through the inner cavity of the sealing port channel and be partially exposed. This structure automatically cleans the residue adhering to the inner wall of the pipe when the piston blocks the sealing port, keeping the inner wall of the pipe clean.

[0016] The piston rod and wall scraper inside the pipe cavity, controlled by the piston rod, not only make piston control more flexible, but also automatically clean the residual molten liquid on the cavity wall during the suction and discharge process, eliminating the need for additional cleaning steps before the device can be used again, significantly improving the reusability of the device.

[0017] Pipes, scrapers, and pistons are made of high-temperature corrosion-resistant materials such as stainless steel, nickel-based alloys, tungsten alloys, niobium alloys, tantalum alloys, and ceramic coatings, which effectively meet the equipment's requirements for using corrosive or viscous molten liquids and improve the equipment's reliability.

[0018] The device is equipped with a cooling pipe at the top to quickly reduce the high temperature of the device when it is absorbing, transporting and discharging molten liquid, and to protect the vulnerable parts of the device from high temperature damage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the automatic molten liquid with a specific density in Embodiment 1.

[0020] Figure 2 This is a diagram illustrating the state of automatically drawing molten metal of a specific density and loading it into molten metal of different densities, as shown in Example 1.

[0021] Figure 3 This is a diagram showing the state of the automatic molten liquid aspirator for a specific density being drawn up in Example 1.

[0022] Figure 4 This is a diagram illustrating the state of the automatically drawn molten liquid of a specific density in Example 1.

[0023] Figure 5 This is a diagram showing the state of automatically drawing and discharging molten liquid of a specific density in Example 1.

[0024] Figure 6 This is a schematic diagram of the structure of the automatic molten liquid with a specific density device in Example 2.

[0025] Figure 7 This is a schematic diagram of the structure of the automatic molten liquid with a specific density device in Example 3.

[0026] Figure 8 This is a schematic diagram of the structure of the automatic molten liquid with a specific density device in Example 3.

[0027] Figure 9 This is a schematic diagram of the structure of the automatic molten liquid with a specific density device in Example 3. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1 - Pipeline

[0031] 11—Pipe cavity

[0032] 12—Inner wall of the cavity

[0033] 13 - Sealed Port Channel

[0034] 14 - Pipeline Sealing Port

[0035] 15 - Positioning

[0036] 2 - Piston

[0037] 21 - Card Body

[0038] 22——Extrapolation body

[0039] 3 - Piston rod

[0040] 4 - Piston Driver

[0041] 5 - Vent

[0042] 51 - One-way air outlet

[0043] 52 - One-way air intake

[0044] 6 - Wall scraper

[0045] 7 - Cooling pipe

[0046] 71—Coolant inlet / outlet

[0047] 8 - Crucible

[0048] 81 — Density 1 (Melting liquid)

[0049] 82 — Density 2 molten metal

[0050] 9 - Mold Example

[0051] This embodiment describes an automatic device for extracting molten metal of a specific density, applied in the field of rare earth smelting. In the rare earth smelting process, it is necessary to extract molten metal of a specific density from a crucible containing molten metal of mixed densities. For example... Figure 1As shown, the device for automatically drawing molten liquid of a specific density according to this utility model is in standby mode. The device includes a pipe 1, a piston 2, a piston actuator 4, and a vent 5. The pipe 1 includes a pipe cavity 11 at the upper end and a sealing channel 13 at the lower end. The inner diameter of the sealing channel 13 is smaller than the inner diameter of the pipe cavity 11. A retaining device 15 with an inwardly recessed slope is provided between the pipe cavity 11 and the sealing channel 13. The lower end of the sealing channel 13... The pipe is provided with a sealing port 14; the piston 2 is placed inside the pipe 1 and is cone-shaped, consisting of a retaining body 21 and an outward pushing body 22; the upper end of the pipe is provided with a vent 5, a one-way vent 51 and a one-way vent 52 are located on both sides of the pipe 1 respectively, and are respectively equipped with a universal solenoid valve or air valve to control their opening or closing; the piston actuator 4 is a pneumatic cylinder, located at the upper end of the pipe cavity 11, and connected to the piston rod 3 inside the pipe cavity 11, one end of the piston rod 3 is connected to the piston actuator 4, and the other end is connected to the piston 2. When using an automatic device for drawing molten liquid of a specific density to draw a solution of a specific density from crucibles 8 containing different densities, the steps are as follows:

[0052] Step 1: Ensure the device is in a closed state, such as... Figure 1 As shown. Controlled by a solenoid valve, the one-way outlet 51 and one-way inlet 52 are closed. A pneumatic cylinder applies a pressure of 10-20 N to the piston rod 3, causing the piston 2 to move towards the lower end of the pipe at a speed of 1-2 mm / s. When the piston 2 reaches the locking position 15, the piston's locking body 21 locks the locking position 15, and the piston's outer pusher 22 inserts into the inner cavity of the sealing channel 13, blocking the pipe sealing port 14 and sealing the device. This prevents molten metal from entering the pipe cavity 11 when the device is inserted into the crucible 8, especially in the low-density molten metal zone. The second step involves inserting the device into the crucible, as... Figure 2 As shown. Insert the sealed end of the pipe in the closed device into crucible 8, and determine the insertion depth based on the density of the molten metal to be extracted. Normally, denser molten metals settle at the bottom of crucible 8.

[0053] The third step is to draw up the molten liquid of the appropriate density, such as... Figure 3As shown. Open the one-way air outlet 51 while keeping the one-way air inlet 52 closed. At this point, a certain negative pressure is formed within the pipe cavity 11. Then, based on the molten liquid viscosity, the pneumatic cylinder 4 further reduces the air pressure within the pipe 1 to -0.05 to -0.1 MPa. The pneumatic cylinder 4 pulls the piston rod 3, causing the piston 2 to move upwards, disengaging it from the pipe seal 14. This opens the pipe seal 14, allowing the molten liquid to enter the pipe cavity 11 through the seal channel 13, ensuring that the molten liquid of the target density smoothly enters the pipe cavity under negative pressure. In this step, the opening of the pipe seal 14 does not need to be too large, ensuring that the molten liquid enters the pipe cavity while also facilitating the closing of the pipe seal when removing the molten liquid in the next step.

[0054] Fourth step, remove the molten metal, such as... Figure 4 As shown. Close the one-way air outlet 51 while keeping the one-way air inlet 52 closed. Push the piston rod 3 through the pneumatic cylinder 4 to drive the piston to block the pipe sealing port 14, keeping the molten liquid inside the pipe cavity 11, and move the device that automatically draws in molten liquid of a specific density into the mold 9.

[0055] Fifth step, eject the molten liquid, such as Figure 5 As shown. The pneumatic cylinder 4 pulls the piston rod 3 to move the piston upward, which in turn opens the pipe sealing port 14 and the one-way air inlet 52, while keeping the one-way air outlet 51 closed. This increases the pressure inside the cavity, causing the molten liquid in the pipe cavity to flow out of the cavity under its own gravity and the air pressure inside the pipe cavity, and enter the lower mold 9 for collection. Example

[0056] like Figure 6 As shown, based on Embodiment 1, an automatic device for drawing molten liquid of a specific density further includes a wall scraper 6. The wall scraper 6 is strip-shaped, with one end connected to the piston rod 3 and the other end extending to the inner wall 12 of the cavity. The wall scraper 6 is also provided with a molten liquid passage hole for molten liquid flow. When the device is working, the piston rod 3 and the wall scraper 6 in the pipeline cavity are positioned such that the piston rod is controlled by a pneumatic cylinder, thereby controlling the piston and the wall scraper to move up and down. Since the wall scraper 6 extends to the inner wall 12 of the cavity, it repeatedly scrapes the inner wall 12 of the cavity as the piston rod moves up and down, further automatically cleaning the residual molten liquid on the inner wall of the cavity. No additional cleaning steps are required for the next use, significantly improving the repeatability of the device.

[0057] Depending on the functional requirements of the device, the wall scraper 6 can be designed on one or both sides of the piston rod 3; the shape of the wall scraper 6 can be flat, sheet-like, or semi-circular; the number of wall scrapers 6 can be one or multiple pieces, and the multiple pieces can be laid flat around the left side of the piston rod 3 or arranged longitudinally on the piston rod 3; the area of ​​the wall scraper 6 can be a part of the pipe cavity 11 or the cross-sectional area of ​​the pipe cavity; the wall scraper 6 can be installed in a fixed state, or it can be moved or rotated. Example

[0058] like Figure 7 As shown, the device for automatically drawing molten liquid of a specific density also includes a cooling pipe 7. The cooling pipe 7 is located in the upper part of the pipe cavity 11. The cooling pipe 7 has inlet and outlet for coolant. When the device operates continuously for a long time, causing the temperature to rise, or when drawing high-temperature molten liquid such as metal, the amount of coolant inside the cooling pipe 7 is controlled to quickly reduce the high temperature of the device during the drawing, transporting, and discharging of molten liquid, thus accelerating the cooling time of the device and protecting the precision components on the equipment. This not only ensures work schedules but also improves work efficiency. The coolant can also be in a removable canister form for replacement.

[0059] Based on the above scheme, the cooling pipe 7 can also be an independent structure, placed outside the pipe cavity, and a connecting channel is provided between the pipe cavity 11 and the cooling pipe 7 for the flow of coolant and cold air.

[0060] like Figure 8 , Figure 9 As shown, in the device for automatically drawing molten liquid of a specific density, the shape and size of the piston can be designed as circular or polygonal, or as a polygonal structure including a locking body and an outward pusher, or as conical or mushroom-shaped, depending on the requirements. The inner diameter of the sealing port channel 13 is smaller than the inner diameter of the pipe cavity 11, and the locking position 15 between the pipe cavity 11 and the sealing port channel 13 can be arc-shaped or horizontally connected.

[0061] Because the inner wall of the pipeline cavity, the scraper, and the piston are made of high-temperature corrosion-resistant materials such as stainless steel, nickel-based alloys, tungsten alloys, niobium alloys, and tantalum alloys, when the device absorbs high-temperature materials such as molten metal, the high-temperature corrosion-resistant materials are not corroded by the temperature of the molten metal due to their own characteristics, thereby improving the reliability and lifespan of the device and realizing its applicability in industrial scenarios.

[0062] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. For example, in terms of application fields, this utility model can also be applied to fields such as iron and steel smelting, petroleum, chemical industry, and papermaking. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for automatically drawing molten liquid of a specific density, characterized in that: The device includes a pipe, a piston, a piston rod, a piston actuator, and a vent. The lower end of the pipe is equipped with a pipe sealing port for controlling the intake or discharge of molten liquid; The piston is placed inside the pipe cavity. When the piston moves to the pipe sealing port, it blocks the pipe sealing port. When the piston moves to the upper end of the pipe, it opens the pipe sealing port and draws in the molten liquid. The piston and piston rod are placed inside the pipe cavity, with one end of the piston rod connected to the piston actuator and the other end connected to the piston. The piston actuator controls the piston to move up and down within the pipe cavity.

2. The device for automatically extracting molten liquid of a specific density according to claim 1, characterized in that: The vent is located on the pipe body and includes a one-way inlet and a one-way outlet.

3. The device for automatically extracting molten liquid of a specific density according to claim 2, characterized in that: The one-way air inlet and one-way air outlet are controlled independently or uniformly by solenoid valves to open or close.

4. The device for automatically extracting molten liquid of a specific density according to claim 1, characterized in that: The pipeline includes a pipeline cavity and a sealing port channel, with the pipeline sealing port located at the lower end of the sealing port channel; the inner diameter of the sealing port channel is smaller than the inner diameter of the pipeline cavity, and there is an inwardly recessed slope or arc between the pipeline cavity and the sealing port channel, or there is a connecting slot between the pipeline cavity and the pipeline opening.

5. The device for automatically extracting molten liquid of a specific density according to claim 4, characterized in that: The piston includes a locking body and an outer thrust body; When the piston moves to the pipe sealing port to block the sealing port, the locking body is placed in the locking position; the external pusher is inserted into the inner cavity of the sealing port channel; Alternatively, the pusher body passes through the inner cavity of the sealing port channel and is partially exposed.

6. The device for automatically extracting molten liquid of a specific density according to claim 2, characterized in that: The inner wall of the pipe cavity is provided with a wall scraper on one or both sides; the wall scraper is connected to the piston rod; the wall scraper is provided with a molten liquid passage hole.

7. The device for automatically extracting molten liquid of a specific density according to claim 1, characterized in that: The device is equipped with a cooling pipe at its upper end.

8. The device for automatically extracting molten liquid of a specific density according to claim 7, characterized in that: The cooling pipe is equipped with a coolant inlet and outlet.

9. The device for automatically extracting molten liquid of a specific density according to claim 7, characterized in that: The cooling pipe is placed inside the pipe cavity, or the cooling pipe is placed outside the pipe cavity and the pipe cavity is connected to the cooling pipe.

10. The apparatus for automatically extracting molten liquid of a specific density according to any one of claims 1, 6, and 7, characterized in that: The pipes, scrapers, and pistons are made of high-temperature corrosion-resistant materials.

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