Anti-oxidation holding furnace for high-pressure casting aluminum liquid

Abstract

The utility model relates to high pressure casting field, specifically speaking is a kind of aluminium liquid anti-oxidation holding furnace for high pressure casting, including holding furnace body, the top of holding furnace body is provided with cover, and the inner chamber of holding furnace body is fixedly connected with air inlet pipe, exhaust pipe and liquid discharge pipe, and the inner chamber of air inlet pipe is fixedly connected with gas delivery pipe;The utility model can detect the pressure and oxygen content in the inside of holding furnace body by pressure detector and oxygen detector, then can start small servo motor and electronic valve by PLC controller, realize the opening of exhaust pipe, make the moving block not easily hinder, close, block and close the air inlet pipe, when aluminium liquid is stored in the inside of holding furnace body, the mutual cooperation of inert gas and graphite rod can effectively reduce the oxidation of aluminium liquid, greatly reduce the condition that aluminium liquid contains a large amount of oxidation slag when being taken out.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure casting, specifically a furnace for preventing oxidation and maintaining the temperature of molten aluminum in high-pressure casting. Background Technology

[0002] High-pressure casting is a metal processing technology that uses high pressure to rapidly inject molten metal into a mold cavity and solidify it under high pressure. Aluminum liquid holding furnace is an industrial equipment specifically used for storing and holding aluminum liquid. It is a key piece of equipment in the field of non-ferrous metal smelting and casting. Aluminum liquid holding and anti-oxidation refers to the process of inhibiting the reaction between aluminum liquid and oxygen and preventing the formation of aluminum oxide during the storage and holding of aluminum liquid through physical and chemical means.

[0003] In existing technologies, molten aluminum is often used in high-pressure casting. After processing and manufacturing, the molten aluminum is usually temporarily stored inside a holding furnace. When storing molten aluminum in a holding furnace, it is necessary to minimize the contact between the molten aluminum and oxygen, thereby reducing the formation of oxide slag in the molten aluminum. This helps to reduce the low yield of finished products caused by excessive oxide slag during high-pressure casting. Currently, in most cases, graphite rods are added inside the holding furnace. The activated carbon atoms generated by the graphite rods at high temperatures reduce the contact between the molten aluminum and oxygen. However, the effect of using graphite rods alone to prevent oxidation of molten aluminum is limited. After prolonged use, the anti-oxidation effect of the graphite rods gradually decreases, resulting in the formation of some oxide slag inside the molten aluminum, which has a certain impact on the subsequent high-pressure casting of the finished products. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the effect of using graphite rods alone to prevent oxidation of molten aluminum is limited. After prolonged use, the anti-oxidation effect of graphite rods gradually decreases, resulting in the formation of oxide slag inside the molten aluminum, which can negatively impact the subsequent high-pressure casting of parts. This invention proposes an anti-oxidation and heat preservation furnace for molten aluminum in high-pressure casting.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-pressure casting aluminum liquid anti-oxidation heat preservation furnace, including a heat preservation furnace body, a cover plate provided on the top of the heat preservation furnace body, an air inlet pipe, an exhaust pipe and a liquid drain pipe fixedly connected to the inner cavity of the heat preservation furnace body, a gas delivery pipe fixedly connected to the inner cavity of the air inlet pipe, a connecting block fixedly connected to the surface of the air inlet pipe, a connecting pipe fixedly connected to the inner cavity of the connecting block, and an adjustment mechanism provided in the inner cavity of the connecting block; The adjusting mechanism includes a fixed ring block, one side of which is fixedly connected to the inner cavity of the connecting block. A sliding groove is provided on one side of the fixed ring block, and multiple sliding grooves are provided. A slider is slidably connected to the inner cavity of each of the multiple sliding grooves. A moving block is fixedly connected to one end of the slider. A connecting rod is rotatably connected to the inner cavity of the moving block, and a rotating block is slidably connected to the surface of the connecting rod.

[0006] Preferably, a PLC controller is fixedly connected to one side of the connecting block, a pressure detector and an oxygen detector are fixedly connected to the inner cavity of the cover plate, an electronic valve is fixedly connected to the surface of the exhaust pipe, and a valve body is fixedly connected to the surface of the drain pipe.

[0007] Preferably, a small servo motor is fixedly connected to the inner cavity of the connecting block, and a driving gear is fixedly connected to the output end of the small servo motor. A driven gear is fixedly connected to the surface of the rotating block, and the teeth of the driven gear mesh with the teeth of the driving gear.

[0008] Preferably, a reinforcing plate is fixedly connected to the surface of the fixed ring block, and one side of the reinforcing plate is fixedly connected to the inner cavity of the connecting block.

[0009] Preferably, a reinforcing ring block is fixedly connected to the surface of the small servo motor, one side of the reinforcing ring block is fixedly connected to the inner cavity of the connecting block, and flange ring blocks are fixedly connected to the surfaces of the connecting pipe and the exhaust pipe.

[0010] Preferably, a placement box is fixedly connected to the bottom of the cover plate, and the surface of the placement box has hollow holes.

[0011] Preferably, a filter block is movably inserted into the inner cavity of the drain pipe, a fixing block is fixedly connected to the surface of the drain pipe, and an installation block is fixedly connected to the surface of the filter block.

[0012] The advantages of this utility model are: This invention uses a pressure detector and an oxygen detector to detect the pressure and oxygen content inside the holding furnace. When the pressure or oxygen content is high, the PLC controller can activate a small servo motor and an electronic valve to open the exhaust pipe while preventing the moving block from obstructing or closing the inlet pipe. When the oxygen content and pressure are low, the PLC controller can close the exhaust pipe and block or partially close the inlet pipe. This effectively reduces the oxidation of molten aluminum when it is stored inside the holding furnace through the combined action of inert gas and graphite rods. This significantly reduces the amount of oxide slag in the molten aluminum when it is removed. It solves the problem that the effect of using graphite rods alone to prevent oxidation of molten aluminum is limited, and that the anti-oxidation effect of graphite rods gradually decreases after long-term use, resulting in the formation of oxide slag inside the molten aluminum, which affects the high-pressure casting of subsequent parts. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of the PLC controller and connecting pipe of this utility model; Figure 4 This is a cross-sectional view of the connecting block of this utility model; Figure 5 This is a schematic diagram of the structure of the small servo motor and the fixed ring block of this utility model; Figure 6 This is a schematic diagram of the connecting rod and rotating block of this utility model; Figure 7 This is a schematic diagram of the structure of the placement box and the hollow hole of this utility model; Figure 8 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0015] In the diagram: 1. Main body of the heat preservation furnace; 2. Cover plate; 3. Air inlet pipe; 4. Connecting block; 5. Connecting pipe; 6. Exhaust pipe; 7. Drain pipe; 8. Gas supply pipe; 9. Adjustment mechanism; 901. Fixed ring block; 902. Slide groove; 903. Sliding block; 904. Moving block; 905. Connecting rod; 906. Rotating block; 10. Driven gear; 11. Small servo motor; 12. Drive gear; 13. Reinforcing ring block; 14. Reinforcing plate; 15. Pressure detector; 16. Oxygen detector; 17. Electronic valve; 18. PLC controller; 19. Valve body; 20. Fixed block; 21. Mounting block; 22. Filter block; 23. Placement box; 24. Hollow hole; 25. Flange ring block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail. This application discloses an anti-oxidation and heat preservation furnace for molten aluminum used in high-pressure casting. (Refer to...) Figure 1 and Figure 6 An anti-oxidation heat preservation furnace for high pressure casting aluminum liquid includes a heat preservation furnace body 1. A cover plate 2 is provided on the top of the heat preservation furnace body 1. An air inlet pipe 3, an exhaust pipe 6 and a liquid drain pipe 7 are fixedly connected to the inner cavity of the heat preservation furnace body 1. An air supply pipe 8 is fixedly connected to the inner cavity of the air inlet pipe 3. A connecting block 4 is fixedly connected to the surface of the air inlet pipe 3. A connecting pipe 5 is fixedly connected to the inner cavity of the connecting block 4. An adjustment mechanism 9 is provided in the inner cavity of the connecting block 4. The adjusting mechanism 9 includes a fixed ring block 901. One side of the fixed ring block 901 is fixedly connected to the inner cavity of the connecting block 4. A sliding groove 902 is provided on one side of the fixed ring block 901. Multiple sliding grooves 902 are provided. A slider 903 is slidably connected to the inner cavity of each of the multiple sliding grooves 902. A moving block 904 is fixedly connected to one end of the slider 903. A connecting rod 905 is rotatably connected to the inner cavity of the moving block 904. A rotating block 906 is slidably connected to the surface of the connecting rod 905.

[0018] The interior of the holding furnace body 1 can be used to store molten aluminum that needs to be temporarily stored, while the cover plate 2 can seal the holding furnace body 1. At the same time, the holding furnace body 1 can be connected to the connecting block 4 and the connecting pipe 5 through the air inlet pipe 3. One end of the connecting pipe 5 can be connected to an external pipe, and the connecting pipe 5 can deliver inert gas into the interior of the holding furnace body 1 through the connection with the external pipe. The exhaust pipe 6 can allow the air inside the holding furnace body 1 to be discharged smoothly. The liquid drain pipe 7 can be used to remove the molten aluminum inside the holding furnace body 1. The setting of the gas supply pipe 8 allows the inert gas to enter the interior of the holding furnace body 1 through the air inlet pipe 3 and stay inside the holding furnace body 1 smoothly, and it is not easy to be discharged directly through the exhaust pipe 6.

[0019] Furthermore, the connecting block 4 can connect to the fixed ring block 901, and the fixed ring block 901 can connect to the slider 903 through the slide groove 902. The slider 903 can slide inside the slide groove 902. The slider 903 can be installed on the connecting rod 905 through the moving block 904. The sliding connection between the connecting rod 905 and the rotating block 906 allows the rotating block 906 to push the connecting rod 905 smoothly when it rotates. When the connecting rod 905 is pushed, it can smoothly drive the moving block 904 to move together. Since the slider 903 is connected to the slide groove 902, the moving block 904 can smoothly move on one side of the fixed ring block 901. The movement of the moving block 904 allows it to smoothly block or open the flow range of the air inlet pipe 3, thereby realizing the control of the inert gas delivery and further improving the adjustment of the delivery volume during inert gas delivery.

[0020] Reference Figure 2 and Figure 3 A PLC controller 18 is fixedly connected to one side of the connecting block 4. A pressure detector 15 and an oxygen detector 16 are fixedly connected to the inner cavity of the cover plate 2. An electronic valve 17 is fixedly connected to the surface of the exhaust pipe 6. A valve body 19 is fixedly connected to the surface of the drain pipe 7. The PLC controller 18 is electrically connected to the pressure detector 15, the oxygen detector 16, and the electronic valve 17. The pressure detector 15 can detect the pressure inside the heat preservation furnace body 1, and the oxygen detector 16 can detect the oxygen content inside the heat preservation furnace body 1. When the pressure or oxygen content inside the heat preservation furnace body 1 is high, it can smoothly transmit an electrical signal to the PLC controller 18, and the PLC controller 18 can control the electronic valve 17, so that the electronic valve 17 can control the opening and closing of the exhaust pipe 6, thereby realizing the pressure relief inside the heat preservation furnace body 1 and reducing the oxygen content inside the heat preservation furnace body 1 by the input of inert gas. The valve body 19 installed on the surface of the drain pipe 7 makes it easy for the operator to open the drain pipe 7 for subsequent removal of aluminum liquid.

[0021] Reference Figure 5 and Figure 6 A small servo motor 11 is fixedly connected to the inner cavity of the connecting block 4. A drive gear 12 is fixedly connected to the output end of the small servo motor 11. A driven gear 10 is fixedly connected to the surface of the rotating block 906. The teeth of the driven gear 10 mesh with the teeth of the drive gear 12. During operation, the small servo motor 11 drives the drive gear 12 to rotate. When the drive gear 12 rotates, it smoothly meshes with the driven gear 10, driving the rotating block 906 to rotate, thereby adjusting the position of the moving block 904 and controlling the amount of inert gas delivered to the intake pipe 3. The small servo motor 11 is also electrically connected to the PLC controller 18, which allows the pressure detector 15 and the oxygen detector... When the pressure or oxygen content inside the heat preservation furnace body 1 is detected to be high, the small servo motor 11 can be driven smoothly through the PLC controller 18 to rotate the driven gear 10, so that the moving block 904 can reduce the obstruction to the inert gas delivery of the air inlet pipe 3. The pressure detector 15, oxygen detector 16, electronic valve 17 and PLC controller 18 can be selected according to the actual situation. For example, the pressure detector 15 can be Dingjin-HL-WYB601, the oxygen detector 16 can be MSA-DF-8500, the electronic valve 17 can be Cash-Acme-FV(M)X, and the PLC controller 18 can be Siemens-S7-1500.

[0022] Reference Figure 5 and Figure 6 A reinforcing plate 14 is fixedly connected to the surface of the fixed ring block 901. One side of the reinforcing plate 14 is fixedly connected to the inner cavity of the connecting block 4. The reinforcing plate 14 can reinforce and strengthen the fixed ring block 901 through its connection with the connecting block 4, so that the fixed ring block 901 can be stable enough when in use.

[0023] Reference Figure 1 and Figure 6 A reinforcing ring block 13 is fixedly connected to the surface of the small servo motor 11. One side of the reinforcing ring block 13 is fixedly connected to the inner cavity of the connecting block 4. Flange ring blocks 25 are fixedly connected to the surfaces of the connecting pipe 5 and the exhaust pipe 6. The reinforcing ring block 13 can reinforce and strengthen the small servo motor 11, making the small servo motor 11 stable enough during use and not prone to shaking or tilting. The flange ring block 25 makes it easy for operators to connect external pipes to the connecting pipe 5 and the exhaust pipe 6, thereby enabling the smooth use of inert gas.

[0024] Reference Figure 7The bottom of the cover plate 2 is fixedly connected to a placement box 23. The surface of the placement box 23 is provided with a hollow hole 24. The placement box 23 can be used to place the graphite rods that need to be used. The hollow hole 24 allows the activated carbon atoms generated by the graphite rods at high temperature to come into contact with the molten aluminum inside the heat preservation furnace body 1.

[0025] Reference Figure 8 A filter block 22 is movably inserted into the inner cavity of the drain pipe 7. A fixing block 20 is fixedly connected to the surface of the drain pipe 7, and an installation block 21 is fixedly connected to the surface of the filter block 22. The filter block 22 can filter the aluminum liquid flowing out from the drain pipe 7 to a certain extent and reduce the outflow of oxide slag. The setting of the fixing block 20 and the installation block 21 makes it convenient for the staff to install, disassemble and replace the filter block 22.

[0026] Working Principle: In operation, the operator first adds molten aluminum to the interior of the holding furnace body 1, then seals it with the cover plate 2. Afterward, the connecting pipe 5 and the exhaust pipe 6 are connected to external pipelines via flange ring 25. Inert gas is then supplied through the connecting pipe 5 to the inlet pipe 3, smoothly adding it into the holding furnace body 1. Once inside the furnace body 1, the air inside is exhausted through the exhaust pipe 6. The pressure detector 15 and oxygen detector 16 monitor the pressure and oxygen content inside the furnace body 1. When the oxygen content inside the furnace body 1 is low... The oxygen detector 16 can send an electrical signal to the electronic valve 17 through the PLC controller 18, causing the electronic valve 17 to close the exhaust pipe 6. At the same time, the small servo motor 11 will also operate and drive the drive gear 12 to rotate. Through the meshing of the drive gear 12 and the driven gear 10, the driven gear 10 and the rotating block 906 will rotate. When the rotating block 906 rotates, it can smoothly drive the moving block 904 to move through the connecting rod 905. During the movement, the moving block 904 will be smoothly driven to move towards the center of the fixed ring block 901 through the sliding connection between the slider 903 and the slide groove 902, thereby achieving the blocking and certain closing effect on the intake pipe 3.

[0027] When the pressure or oxygen content inside the holding furnace body 1 is high, the oxygen detector 16 and the pressure detector 15 can send electrical signals to the electronic valve 17 and the small servo motor 11 again through the PLC controller 18, so that the electronic valve 17 can open the exhaust pipe 6, and the operation of the small servo motor 11 will also drive the rotating block 906 to rotate in the opposite direction, canceling the blockage and closure of the air inlet pipe 3, so that the inert gas can smoothly fill the interior of the holding furnace body 1 as much as possible, reducing the oxidation of aluminum liquid.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-pressure casting aluminum melt anti-oxidation holding furnace, comprising a holding furnace body (1), characterized in that: The top of the heat preservation furnace body (1) is provided with a cover plate (2). The inner cavity of the heat preservation furnace body (1) is fixedly connected with an air inlet pipe (3), an exhaust pipe (6) and a liquid drain pipe (7). The inner cavity of the air inlet pipe (3) is fixedly connected with a gas delivery pipe (8). The surface of the air inlet pipe (3) is fixedly connected with a connecting block (4). The inner cavity of the connecting block (4) is fixedly connected with a connecting pipe (5). The inner cavity of the connecting block (4) is provided with an adjustment mechanism (9). The adjustment mechanism (9) includes a fixed ring block (901), one side of which is fixedly connected to the inner cavity of the connecting block (4). A sliding groove (902) is provided on one side of the fixed ring block (901). Multiple sliding grooves (902) are provided. A slider (903) is slidably connected to the inner cavity of each of the multiple sliding grooves (902). A moving block (904) is fixedly connected to one end of the slider (903). A connecting rod (905) is rotatably connected to the inner cavity of the moving block (904). A rotating block (906) is slidably connected to the surface of the connecting rod (905).

2. The anti-oxidation and heat preservation furnace for molten aluminum in high-pressure casting according to claim 1, characterized in that: A PLC controller (18) is fixedly connected to one side of the connecting block (4), a pressure detector (15) and an oxygen detector (16) are fixedly connected to the inner cavity of the cover plate (2), an electronic valve (17) is fixedly connected to the surface of the exhaust pipe (6), and a valve body (19) is fixedly connected to the surface of the drain pipe (7).

3. The anti-oxidation and heat preservation furnace for molten aluminum in high-pressure casting according to claim 2, characterized in that: A small servo motor (11) is fixedly connected to the inner cavity of the connecting block (4), and a drive gear (12) is fixedly connected to the output end of the small servo motor (11). A driven gear (10) is fixedly connected to the surface of the rotating block (906), and the teeth of the driven gear (10) mesh with the teeth of the drive gear (12).

4. The anti-oxidation and heat preservation furnace for molten aluminum in high-pressure casting according to claim 3, characterized in that: A reinforcing plate (14) is fixedly connected to the surface of the fixed ring block (901), and one side of the reinforcing plate (14) is fixedly connected to the inner cavity of the connecting block (4).

5. The anti-oxidation and heat preservation furnace for molten aluminum in high-pressure casting according to claim 4, characterized in that: The surface of the small servo motor (11) is fixedly connected to a reinforcing ring block (13), one side of which is fixedly connected to the inner cavity of the connecting block (4), and the surfaces of the connecting pipe (5) and the exhaust pipe (6) are both fixedly connected to flange ring blocks (25).

6. The anti-oxidation and heat preservation furnace for molten aluminum in high-pressure casting according to claim 3, characterized in that: The bottom of the cover plate (2) is fixedly connected to a placement box (23), and the surface of the placement box (23) is provided with a hollow hole (24).

7. The anti-oxidation and heat preservation furnace for molten aluminum in high-pressure casting according to claim 4, characterized in that: The inner cavity of the drain pipe (7) is movably connected to a filter block (22), the surface of the drain pipe (7) is fixedly connected to a fixing block (20), and the surface of the filter block (22) is fixedly connected to an installation block (21).

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