A melting furnace for ferrous metal casting

Abstract

The utility model relates to a melting furnace technical field discloses a kind of melting furnaces for ferrous metal casting, including a kind of melting furnaces for ferrous metal casting, including operation platform, the operation platform bottom four corners are fixedly connected with support column, the operation platform top is fixedly connected with melting furnace, the operation platform top is slidably connected with sound shield, the sound shield bottom four corners are provided with locking assembly;The locking assembly includes locking column, the locking column top is fixedly connected in the sound shield bottom, the operation platform inside is fixedly connected with fixed block, the fixed block inside rotationally connected with limit ring one.The utility model in the middle, locking column is inserted between limit ring one and limit ring two, and then extrude spring one to make it compression, until locking column is completely inserted, spring one rebounds, completes the locking of sound shield, reaches the effect of insulating noise, solves the problem that traditional device noise pollution is serious, improves the protection to staff health.

Description

Technical Field

[0001] This utility model relates to the field of melting furnace technology, and in particular to a melting furnace for ferrous metal casting. Background Technology

[0002] In the modern industrial system, ferrous metal casting is a key basic process in fields such as machinery manufacturing, construction, and automobiles. Its production efficiency and product quality directly affect the development of various industries. The melting furnace used in ferrous metal casting is the core equipment, which undertakes the important task of heating and melting solid metal raw materials into liquid to meet the needs of subsequent casting and molding. With the acceleration of global industrialization and increasingly stringent environmental protection and occupational health and safety standards, higher requirements have been placed on the performance, reliability, and environmental protection of melting furnaces.

[0003] Currently, the most common ferrous metal casting melting furnaces on the market include electric arc furnaces, induction furnaces, and cupola furnaces. Taking the electric arc furnace as an example, it melts metal by releasing high temperature through the electric arc discharge generated between the electrodes and the furnace charge. The electrode column can control the temperature by adjusting the current and voltage during operation. The induction furnace, on the other hand, uses the principle of electromagnetic induction to generate eddy currents in the metal furnace charge in an alternating magnetic field, thereby heating and melting it.

[0004] However, existing melting furnaces for ferrous metal casting have shortcomings in practical applications. In terms of noise control, traditional melting furnaces generally lack efficient sound insulation devices or are only equipped with fixed sound insulation panels, which are simply fixed to the outside of the equipment with bolts and other connectors. This structure is not only cumbersome to install and disassemble, but also difficult to adapt to the high-frequency vibrations generated by long-term operation of the equipment, causing the sound insulation components to loosen and fall off easily. The sound insulation effect decreases significantly with the use time. Taking electric arc furnaces as an example, the arc discharge noise generated when the electrode column is working and the mechanical vibration noise generated by electromagnetic stirring far exceed occupational health and safety standards. Operators who are exposed to this environment for a long time face the risk of occupational diseases such as hearing damage and tinnitus. Therefore, a melting furnace for ferrous metal casting is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a melting furnace for ferrous metal casting, which aims to improve the problem of the lack of efficient sound insulation devices in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A melting furnace for ferrous metal casting includes an operating table, with support columns fixedly connected to the four corners of the bottom of the operating table, a melting furnace fixedly connected to the top of the operating table, a soundproof cover slidably connected to the top of the operating table, and locking components provided at the four corners of the bottom of the soundproof cover.

[0008] The locking assembly includes a locking post, the top of which is fixedly connected to the bottom of the soundproof cover. A fixing block is fixedly connected inside the operating table. A limiting ring one is rotatably connected inside the fixing block. A limiting ring two is rotatably connected to the inner wall of the limiting ring one. The outer wall of the locking post is slidably connected between the limiting ring one and the limiting ring two. A fixing plate is fixedly connected to the side walls of both the limiting ring one and the limiting ring two. A spring one is provided at the bottom of the fixing plate. One end of the spring one is fixedly connected to the bottom of the fixing plate, and the other end of the spring one is fixedly connected to the top of the fixing block.

[0009] As a further description of the above technical solution:

[0010] A discharge pipe is fixedly connected to the bottom of the furnace, and the discharge pipe passes through the inside of the operating platform.

[0011] As a further description of the above technical solution:

[0012] The furnace is slidably connected to the top of the furnace, and an electrode post is provided on the side of the furnace. The bottom of the electrode post is fixedly connected to the top of the operating table, and the output end of the electrode post passes through the furnace cover and is slidably connected to the inside of the furnace.

[0013] As a further description of the above technical solution:

[0014] A flue pipe is fixedly connected to one side of the top of the furnace cover, and a furnace door is opened on the side wall of the furnace.

[0015] As a further description of the above technical solution:

[0016] A filter plate is slidably connected inside the exhaust pipe, and a handle is fixedly connected to the top of the filter plate.

[0017] As a further description of the above technical solution:

[0018] A locking block is fixedly connected to the bottom of the filter plate, and limit beads are slidably connected to both sides of the locking block. The outer wall of the limit beads is slidably connected to the inside of the exhaust pipe.

[0019] As a further description of the above technical solution:

[0020] The limiting bead is fixedly connected to the side wall of the limiting plate, and the outer wall of the limiting plate is slidably connected to the inside of the exhaust pipe.

[0021] As a further description of the above technical solution:

[0022] A second spring is provided on the side wall of the limiting plate. One end of the second spring is fixedly connected to the side wall of the limiting plate, and the other end of the second spring is fixedly connected to the inside of the exhaust pipe.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the locking pin is first inserted between the limiting ring one and the limiting ring two, and then the spring one is squeezed to compress it until the locking pin is fully inserted. The spring one then rebounds, completing the locking of the soundproof cover, achieving the effect of noise isolation, solving the problem of serious noise pollution in traditional devices, and improving the protection of workers' health.

[0025] 2. In this utility model, the operator first pulls the handle and filter plate upwards, the locking block presses the limit beads at both ends, and then compresses the second spring until the limit beads leave the corresponding holes of the locking block, thus completing the unlocking. When the filter plate is returned after cleaning, the operator pulls the handle downwards, the locking block presses the limit beads at both ends, and then compresses the second spring until the limit beads are engaged in the corresponding holes of the locking block, thus completing the locking. This achieves the effect of filtering impurities in the flue gas, solves the problem of the direct emission of harmful substances in the flue gas affecting the environment, and improves environmental protection. Attached Figure Description

[0026] Figure 1 This is a perspective view of a melting furnace for ferrous metal casting proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the locking column structure of a melting furnace for ferrous metal casting proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the fixing block structure of a melting furnace for ferrous metal casting proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the exhaust pipe structure of a melting furnace for ferrous metal casting proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the filter plate structure of a melting furnace for ferrous metal casting proposed in this utility model.

[0031] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0032] Legend:

[0033] 1. Operating platform; 2. Support column; 3. Electrode column; 4. Furnace cover; 5. Furnace; 6. Furnace door; 7. Discharge pipe; 8. Exhaust pipe; 9. Soundproof cover; 10. Locking column; 11. Limiting ring one; 12. Limiting ring two; 13. Fixing plate; 14. Spring one; 15. Fixing block; 16. Filter plate; 17. Handle; 18. Locking block; 19. Limiting bead; 20. Limiting plate; 21. Spring two. Detailed Implementation

[0034] 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 protection scope of the present utility model.

[0035] Reference Figures 1-3 This utility model provides an embodiment of a ferrous metal casting melting furnace, including an operating platform 1. The operating platform 1 is welded from carbon structural steel. Support columns 2 are fixedly connected to the four corners of the bottom of the operating platform 1. The support columns 2 are also made of steel. Their main function is to stably support the operating platform 1 on the ground and ensure the overall stability of the melting furnace during operation. A furnace 5 is fixedly connected to the top of the operating platform 1. The furnace 5 consists of an outer shell and an inner liner. The outer shell is made of high-temperature resistant stainless steel, and the inner liner is made of high-alumina refractory bricks. It is used to contain ferrous metal raw materials and provide melting space. This is existing technology and will not be described in detail here. A soundproof cover 9 is slidably connected to the top of the operating platform 1. The soundproof cover 9 adopts a double-layer steel plate sandwiched with sound-absorbing cotton structure. The outer layer is cold-rolled steel plate, the inner layer is perforated steel plate, and the middle is filled with glass fiber sound-absorbing cotton. Its main function is to isolate the noise generated by the furnace 5 during operation. This is existing technology and will not be described in detail here. Locking components are provided at the four corners of the bottom of the soundproof cover 9.

[0036] The locking assembly includes a locking post 10, the top of which is fixedly connected to the bottom of the soundproof enclosure 9. The locking post 10 is made of carbon structural steel. A fixing block 15, also made of steel, is fixedly connected inside the operating platform 1. This fixing block 15 supports and installs limit ring 11 and limit ring 12. Limit ring 11 is rotatably connected inside the fixing block 15, and limit ring 12 is rotatably connected to the inner wall of limit ring 11. Both limit ring 11 and limit ring 12 are made of brass. The outer wall of the locking post 10 is slidably connected between limit ring 11 and limit ring 12, providing radial limitation for the locking post 10. Both the side walls of 11 and the second limiting ring 12 are fixedly connected to a fixing plate 13. The fixing plate 13 is made of steel and is used to connect the first spring 14. The bottom of the fixing plate 13 is provided with the first spring 14. One end of the first spring 14 is fixedly connected to the bottom of the fixing plate 13, and the other end of the first spring 14 is fixedly connected to the top of the fixing block 15. The first spring 14 provides elastic force during the insertion and removal of the locking pin 10, so as to realize the locking and unlocking functions of the soundproof cover 9. The bottom of the furnace 5 is fixedly connected to the discharge pipe 7. The discharge pipe 7 passes through the inside of the operating table 1 and is made of high temperature resistant alloy steel. It is used to discharge the molten metal. The inside of the pipe is equipped with a control valve to control the flow rate and flow of the molten metal. A furnace cover 4 is slidably connected to the top of the furnace 5. The furnace cover 4 is made of the same high-temperature resistant stainless steel as the outer shell of the furnace 5. It is used to seal the top opening of the furnace 5, reduce heat loss and prevent molten metal from splashing. An electrode post 3 is set on the side of the furnace 5. The bottom of the electrode post 3 is fixedly connected to the top of the operating table 1. The output end of the electrode post 3 passes through the furnace cover 4 and is slidably connected to the inside of the furnace 5. The main body of the electrode post 3 is made of copper alloy, and the output end is made of graphite electrode. Its function is to generate an electric arc with the metal raw materials in the furnace and release heat to melt the metal. It is connected to the power supply box. A flue pipe 8 is fixedly connected to one side of the top of the furnace cover 4. The flue pipe 8 is made of stainless steel and is used to exhaust the flue gas generated in the furnace 5. A furnace door 6 is opened on the side wall of the furnace 5. The furnace door 6 is made of high-temperature resistant steel plate and refractory material and is used for feeding, observing the situation inside the furnace and cleaning slag.

[0037] Reference Figures 4-6A filter plate 16 is slidably connected inside the exhaust pipe 8. The filter plate 16 adopts a multi-layer composite structure, with an outer layer of stainless steel wire mesh and an inner layer of activated carbon adsorption, used to filter dust, harmful gases and other impurities in the flue gas. This is existing technology and will not be described in detail here. A handle 17 is fixedly connected to the top of the filter plate 16. The handle 17 is made of engineering plastic, making it easy for operators to pull the filter plate 16 for installation and removal. A locking block 18 is fixedly connected to the bottom of the filter plate 16. The locking block 18 is made of steel and is used to cooperate with the limiting structure inside the exhaust pipe 8 to fix the filter plate 16. Both sides of the locking block 18 are slidably connected. A limiting bead 19, made of stainless steel, is slidably connected to the inside of the exhaust pipe 8, serving as a limiting and guiding element. A limiting plate 20, made of steel, is fixedly connected to the side wall of the limiting bead 19 and is used to connect a second spring 21. The outer wall of the limiting plate 20 is slidably connected to the inside of the exhaust pipe 8, and a second spring 21 is provided on the side wall of the limiting plate 20. One end of the second spring 21 is fixedly connected to the side wall of the limiting plate 20, and the other end is fixedly connected to the inside of the exhaust pipe 8. The second spring 21 provides elastic force during the installation and removal of the filter plate 16, realizing the locking and unlocking functions of the filter plate 16.

[0038] Working principle: When using this ferrous metal casting melting furnace, the operator puts the raw materials into the furnace 5. At this time, the operator installs the soundproof cover 9. First, the locking pin 10 at the bottom of the soundproof cover 9 is inserted into the corresponding hole inside the operating table 1. At this time, the side wall of the locking pin 10 presses the limiting ring 11 and the limiting ring 2 12, which in turn presses the fixing plate 13 to move downward. The fixing plate 13 then presses the spring 14 to compress it until the locking pin 10 is fully inserted between the limiting ring 11 and the limiting ring 2 12. The spring 14 rebounds, completing the locking of the soundproof cover 9. Then the electrode column 3 works, and the raw materials inside the furnace 5 begin to melt. After the melting is completed, the valve can be opened, and the melted raw materials flow out through the discharge pipe 7. When it is necessary to remove the soundproof cover 9, the operator first pulls the locking pin 10 upward. The side wall of the locking pin 10 presses the limiting ring 11 and the limiting ring 2 12, and the spring 14 is compressed until the locking pin 10 is removed, completing the unlocking of the soundproof cover 9. This achieves the effect of isolating the noise generated when the electrode column 3 is working.

[0039] During the melting of raw materials, a large amount of flue gas is generated and discharged from the exhaust pipe 8. When the filter plate 16 needs to be disassembled and cleaned, the operator first pulls the handle 17. At this time, the locking block 18 moves upward with the filter plate 16, squeezing the limit beads 19 at both ends. The limit beads 19 then squeeze the limit plate 20 and the second spring 21. The second spring 21 is compressed until the limit beads 19 leave the corresponding hole of the locking block 18. The filter plate 16 is completely removed, the second spring 21 rebounds, and the limit plate 20 and the limit beads 19 return to their original positions. When the filter plate 16 is put back after cleaning, the operator inserts the filter plate 16 into the corresponding hole inside the exhaust pipe 8. At this time, the locking block 18 squeezes the limit beads 19 at both ends, compressing the second spring 21 until the locking block 18 is fully inserted. The second spring 21 rebounds, allowing the limit beads 19 to insert into the corresponding hole of the locking block 18, completing the locking and achieving the effect of filtering impurities in the flue gas.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A melting furnace for ferrous metal casting, comprising an operating table (1), characterized in that: The operating table (1) has four fixed support columns (2) at the bottom corners, a furnace (5) at the top, a soundproof cover (9) at the top, and a locking component at the bottom corners of the soundproof cover (9). The locking assembly includes a locking post (10), the top of which is fixedly connected to the bottom of the soundproof cover (9). A fixing block (15) is fixedly connected inside the operating table (1). A limiting ring one (11) is rotatably connected inside the fixing block (15). A limiting ring two (12) is rotatably connected to the inner wall of the limiting ring one (11). The outer wall of the locking post (10) is slidably connected between the limiting ring one (11) and the limiting ring two (12). A fixing plate (13) is fixedly connected to the side walls of both the limiting ring one (11) and the limiting ring two (12). A spring one (14) is provided at the bottom of the fixing plate (13). One end of the spring one (14) is fixedly connected to the bottom of the fixing plate (13), and the other end of the spring one (14) is fixedly connected to the top of the fixing block (15).

2. The melting furnace for ferrous metal casting according to claim 1, characterized in that: The bottom of the furnace (5) is fixedly connected to a discharge pipe (7), which passes through the inside of the operating table (1).

3. The melting furnace for ferrous metal casting according to claim 1, characterized in that: The furnace (5) is slidably connected to the top of the furnace cover (4), and an electrode column (3) is provided on the side of the furnace (5). The bottom of the electrode column (3) is fixedly connected to the top of the operating table (1), and the output end of the electrode column (3) passes through the furnace cover (4) and is slidably connected to the inside of the furnace (5).

4. A melting furnace for ferrous metal casting according to claim 3, characterized in that: The top side of the furnace cover (4) is fixedly connected to a flue pipe (8), and the side wall of the furnace (5) is provided with a furnace door (6).

5. A melting furnace for ferrous metal casting according to claim 4, characterized in that: The exhaust pipe (8) has a filter plate (16) slidably connected inside, and a handle (17) is fixedly connected to the top of the filter plate (16).

6. A melting furnace for ferrous metal casting according to claim 5, characterized in that: The bottom of the filter plate (16) is fixedly connected to a locking block (18), and both sides of the locking block (18) are slidably connected to limit beads (19). The outer wall of the limit beads (19) is slidably connected to the inside of the exhaust pipe (8).

7. A melting furnace for ferrous metal casting according to claim 6, characterized in that: The limiting bead (19) is fixedly connected to the limiting plate (20) on its side wall, and the outer wall of the limiting plate (20) is slidably connected to the inside of the exhaust pipe (8).

8. A melting furnace for ferrous metal casting according to claim 7, characterized in that: The side wall of the limiting plate (20) is provided with a second spring (21). One end of the second spring (21) is fixedly connected to the side wall of the limiting plate (20), and the other end of the second spring (21) is fixedly connected to the inside of the exhaust pipe (8).

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