A high-strength and high-toughness ductile iron composite alloying melting device for wind power castings

Abstract

This utility model relates to the field of smelting equipment technology and discloses a high-strength and high-toughness ductile iron composite alloy smelting device for wind power castings. The device includes a frame, partitions, heat insulation pads, a grading mechanism, a heater, and a smelting furnace. The grading mechanism is defined within the frame by the partitions and heat insulation pads. The heater and smelting furnace are housed within the grading mechanism. The device also includes a smoke exhaust mechanism located at the top of the frame. The smoke exhaust mechanism includes an air extraction pump, an air supply pipe, and an exhaust fan. A connection hole is opened at the top of the frame, and the smelting furnace is connected to the smoke exhaust mechanism via a connecting pipe passing through the connection hole. The control console is electrically connected to the heater, air extraction pump, and exhaust fan. This utility model achieves independent smelting in different zones through the grading mechanism, improving production flexibility. Simultaneously, the smoke exhaust mechanism actively extracts and cools the high-temperature exhaust gas in stages before safely discharging it, solving the problems of existing technologies that cannot perform zoned smelting and that high-temperature exhaust gas emissions are unsafe, thus ensuring safe equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of smelting equipment technology, and in particular to a smelting device for high-strength and high-toughness ductile iron composite alloying of wind power castings. Background Technology

[0002] Wind power castings, as key load-bearing components of wind turbine generators, have extremely high requirements for material properties. They typically require the use of high-strength, high-toughness ductile iron. Obtaining this high-performance cast iron depends on precise smelting and composite alloying processes.

[0003] In existing smelting technologies, in order to realize the research and development of different alloy formulas or flexible small-batch production, some smelting devices adopt a structure of divided zones or multiple furnaces so that different materials can be smelted independently in the same equipment. However, this multi-chamber, independently heated smelting method will generate a large amount of high-temperature waste gas from different smelting units during the smelting and alloying process. Most of the existing waste gas treatment methods are relatively simple, such as passive or simple extraction through shared flues or negative pressure fans, lacking active and efficient cooling treatment for high-temperature waste gas. This results in the high-temperature waste gas not being sufficiently cooled before being discharged, which not only damages subsequent emission equipment and increases safety hazards, but also has an adverse impact on the working environment due to the direct emission of high-temperature gas, failing to meet the safety and environmental protection requirements of modern precision smelting.

[0004] Therefore, this utility model proposes a high-strength and high-toughness ductile iron composite alloying smelting device for wind power castings to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problem that the high-temperature waste gas generated by the multi-chamber independent melting of wind turbine castings lacks active and efficient cooling treatment in the existing technology, which leads to unsafe emissions and easy damage to the equipment, this utility model aims to provide a wind turbine casting high-strength and tough ductile iron composite alloying melting device with improved structure that can effectively solve the above problems.

[0006] This utility model provides a high-strength and high-toughness ductile iron composite alloying smelting device for wind power castings, including: a frame, a partition, a heat insulation pad, a grading mechanism, a heater, a smelting furnace, and a control console; as well as a smoke exhaust mechanism, connecting holes, and connecting pipes.

[0007] The partition is fixedly connected to the inside of the frame, and the heat insulation pad is fixedly connected to the outer wall of the partition. The frame, the partition and the heat insulation pad define the grading mechanism. The grading mechanism includes the heater disposed at the bottom of the inner wall of the frame and the smelting furnace disposed at the heating end of the heater.

[0008] Furthermore, the exhaust mechanism is located at the top of the frame. The exhaust mechanism is a core innovative structure for achieving active cooling and emission of exhaust gas. The exhaust mechanism includes an air pump, an air supply pipe connected to the top of the air pump, and an exhaust fan located at the middle of the top of the air supply pipe. The top of the frame has the connection hole. The top middle of the smelting furnace is connected to the connection pipe. The air pump 32 passes through the connection hole 5 and is connected to the air pipe 34, forming a complete exhaust gas channel from the smelting furnace to the exhaust fan. The control console is located on the left side of the outer wall of the frame. The control console is electrically connected to the heater, the air pump, and the exhaust fan to achieve coordinated control of smelting heating and exhaust gas emission.

[0009] Preferably, the outer wall of the smelting furnace is rotatably connected to a charging door, an observation window is fixedly connected to the middle of the front side of the charging door, and a handle is fixedly connected to the bottom of the front side of the charging door, so as to facilitate the operator to observe the situation inside the furnace and open the furnace door.

[0010] Preferably, in order to achieve reliable opening and closing of the feeding door, the top left and right sides of the feeding door are rotatably connected to a rotating shaft, and the other end of the rotating shaft is fixedly connected to the smelting furnace; and the bottom left and right sides of the front side of the feeding door are threadedly connected to a retainer for locking and sealing the feeding door during the smelting process.

[0011] Preferably, a pressure valve is provided on both the left and right sides of the top of the smelting furnace. The pressure valve is used to automatically balance the internal pressure of the smelting furnace with the external atmospheric pressure during the heating and smelting process, to prevent the risk of high pressure or negative pressure and to ensure safe operation.

[0012] Preferably, in order to achieve reliable extraction and initial cooling of the exhaust gas, the top end of the connecting pipe is connected to a flange ring by a thread, and the top end of the flange ring is connected to the air pump; and the outer wall of the air pump is provided with a heat absorption ring, which is used to absorb heat and cool down the newly extracted high-temperature exhaust gas for the first time.

[0013] Preferably, in order to achieve secondary deep cooling of the exhaust gas, graphene plates are fixedly connected to both the front and rear sides of the gas transmission pipe. The graphene plates utilize their high thermal conductivity to efficiently absorb the heat flow from the pipe wall and diffuse it into the surrounding air to further cool the exhaust gas.

[0014] Preferably, to ensure the structural stability of the smoke exhaust mechanism, brackets are fixedly connected to the bottom left and right sides of the air pump, and the bottoms of the two brackets are respectively fixedly connected to the top left and right sides of the frame, providing stable installation support for the air pump and the air supply pipe, exhaust fan and other components above.

[0015] Preferably, the console is also electrically connected to the grading mechanism to facilitate unified management or independent zone control of the heaters in each grading mechanism by the operator.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model defines multiple independent grading mechanisms by setting up a frame, partitions and heat insulation pads. Each grading mechanism is equipped with a heater and a melting furnace, and is independently controlled by a control console. This solves the problem that the existing melting devices have a single structure and cannot separate and melt different metal materials in different areas. It achieves the effect of simultaneously melting multiple different metal materials independently in the same equipment without interference, thus improving production flexibility.

[0018] 2. This utility model, by setting up a smoke exhaust mechanism, actively extracts waste gas using an air extraction pump, and causes the waste gas to pass through a heat absorption ring and a gas transmission pipe equipped with a graphene plate for staged cooling, before being discharged by an exhaust fan. This solves the problems of lack of effective active cooling treatment for high-temperature waste gas and unsafe emissions in the prior art, and achieves the effect of rapid staged cooling of high-temperature waste gas, ensuring equipment safety and avoiding high-temperature hazards.

[0019] 3. This utility model solves the problems of the inability to observe the melting process, inconvenient operation, and risk of pressure imbalance in the prior art by setting a charging door with an observation window on the melting furnace and a pressure valve on the top of the melting furnace. It achieves the effect of allowing operators to safely observe the situation inside the furnace without opening the door, while automatically balancing the pressure inside the furnace, thus improving the convenience of operation and the safety of the melting process. Attached Figure Description

[0020] Figure 1 This is a perspective view of a high-strength and high-toughness ductile iron composite alloying melting device for wind power castings proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of a partial structure of a high-strength and tough ductile iron composite alloying melting device for wind power castings proposed in this utility model.

[0022] Figure 3 This is a front view of a partial structure of a high-strength and high-toughness ductile iron composite alloying melting device for wind power castings proposed in this utility model.

[0023] Figure 4 This utility model provides a schematic diagram of the connection hole structure of a high-strength and high-toughness ductile iron composite alloying melting device for wind power castings.

[0024] Figure 5 This invention presents a schematic diagram of the exhaust mechanism of a high-strength and high-toughness ductile iron composite alloying smelting device for wind power castings.

[0025] Legend:

[0026] 1. Frame; 2. Grading mechanism; 21. Heater; 22. Smelting furnace; 23. Feeding door; 24. Rotating shaft; 25. Observation window; 26. Fixing device; 27. Pressure valve; 28. Connecting pipe; 29. ​​Handle; 3. Smoke exhaust mechanism; 31. Flange ring; 32. Air pump; 33. Heat absorption ring; 34. Gas supply pipe; 35. Graphene plate; 36. Exhaust fan; 37. Bracket; 4. Control console; 5. Connecting hole; 6. Partition; 7. Heat insulation pad. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example:

[0029] Please refer to Figures 1 to 5 This utility model provides a high-strength and high-toughness ductile iron composite alloying smelting device for wind power castings. It aims to solve the problems of existing smelting devices having a single structure, being unable to smelt different metal materials in the same equipment in a zoned and independent manner, and having high-temperature exhaust gas generated during smelting directly emitted without effective and safe active cooling and emission treatment.

[0030] Please refer to Figure 1 , Figure 2 and Figure 3A high-strength and high-toughness ductile iron composite alloying melting device for wind power castings includes a frame 1; a partition 6 is fixedly connected inside the frame 1, and a heat insulation pad 7 is fixedly connected to the outer wall of the partition 6; a grading mechanism 2 is defined between the frame 1, the partition 6, and the heat insulation pad 7; the grading mechanism 2 includes a heater 21 disposed at the bottom of the inner wall of the frame 1, and a melting furnace 22 disposed at the heating end of the heater 21; the high-strength and high-toughness ductile iron composite alloying melting device for wind power castings also includes a drain valve disposed at the top of the frame 1. The smoke extraction mechanism 3 includes an air pump 32, an air supply pipe 34 connected to the top of the air pump 32, and an exhaust fan 36 located at the middle of the top of the air supply pipe 34. A connection hole 5 is provided at the top of the frame 1. A connection pipe 28 is connected to the middle of the top of the smelting furnace 22. The air pump 32 passes through the connection hole 5 and is connected to the air supply pipe 34. A control console 4 is provided on the left side of the outer wall of the frame 1. The control console 4 is electrically connected to the heater 21, the air pump 32 and the exhaust fan 36 respectively.

[0031] Please refer to Figure 2 A charging door 23 is rotatably connected to the outer wall of the smelting furnace 22. An observation window 25 is fixedly connected to the middle of the front side of the charging door 23, and a handle 29 is fixedly connected to the bottom front side of the charging door 23. To open and close the charging door 23, a rotating shaft 24 is rotatably connected to the left and right sides of the top of the charging door 23, and the other end of the rotating shaft 24 is fixedly connected to the smelting furnace 22. To lock the charging door 23, a retainer 26 is threadedly connected to the left and right sides of the bottom front side of the charging door 23. This rotating and locking structure allows the operator to operate the charging door 23 to rotate around the rotating shaft 24 through the handle 29, and to achieve sealing and fixation through the retainer 26. In addition, a pressure valve 27 is provided on the left and right sides of the top of the smelting furnace 22. The pressure valve 27 is used to balance the internal pressure of the smelting furnace 22 during the heating process.

[0032] As a preferred embodiment, please refer to Figure 2 To facilitate the operation of the smelting furnace 22, a feeding door 23 is rotatably connected to the outer wall of the smelting furnace 22. An observation window 25 is fixedly connected to the middle of the front side of the feeding door 23, and a handle 29 is fixedly connected to the bottom of the front side of the feeding door 23.

[0033] As a preferred embodiment, please refer to Figure 2 In order to open, close and lock the charging door 23, the top left and right sides of the charging door 23 are rotatably connected with a rotating shaft 24, the other end of the rotating shaft 24 is fixedly connected to the smelting furnace 22, and the bottom left and right sides of the front side of the charging door 23 are threaded with a retainer 26.

[0034] As a preferred embodiment, please refer to Figure 2 In order to ensure the safety of the smelting process, pressure valves 27 are installed on both the left and right sides of the top of the smelting furnace 22.

[0035] As a preferred embodiment, please refer to Figure 5 In order to achieve a reliable connection and initial cooling between the exhaust mechanism 3 and the smelting furnace 22, a flange ring 31 is threaded to the top of the connecting pipe 28, and an air pump 32 is connected to the top of the flange ring 31. A heat-absorbing ring 33 is provided on the outer wall of the air pump 32.

[0036] As a preferred embodiment, please refer to Figure 5 In order to enhance the heat dissipation effect of the gas pipe 34, graphene plates 35 are fixedly connected to both the front and rear sides of the gas pipe 34.

[0037] As a preferred embodiment, please refer to Figure 5 In order to stably support the smoke exhaust mechanism 3, the bottom left and right sides of the air pump 32 are fixedly connected to brackets 37, and the bottom of the two brackets 37 are fixedly connected to the top left and right sides of the frame 1 respectively.

[0038] In a preferred embodiment, the control console 4 is electrically connected to the grading mechanism 2 in order to achieve independent control of the grading melting.

[0039] Working principle: Before starting the equipment, the operator first rotates the retainer 26 and pulls the handle 29 to open the feeding door 23 around the shaft 24; different metal raw materials to be melted are placed into the corresponding melting furnace 22 located in the grading mechanism 2; then the feeding door 23 is closed and the retainer 26 is tightened; the operator starts the heater 21 in the specific grading mechanism 2 through the control panel 4; the heater 21 heats the melting furnace 22; during this process, the partition 6 and the heat insulation pad 7 physically and thermally isolate the different grading mechanisms 2, realizing independent melting of different materials; a pressure valve 27 is installed at the top of the melting furnace 22 to balance the gas pressure inside the furnace; the operator can observe the situation inside the furnace through the observation window 25 on the feeding door 23;

[0040] During or after the smelting process, the operator starts the exhaust system 3 via the control panel 4; the extraction pump 32 starts working, extracting the high-temperature exhaust gas from the smelting furnace 22 via the connecting pipe 28 through the flange ring 31; the exhaust gas first passes through the heat absorption ring 33 on the outer wall of the extraction pump 32 for initial cooling; the cooled exhaust gas enters the gas delivery pipe 34; the graphene plates 35 on the front and rear sides of the gas delivery pipe 34 absorb the heat of the exhaust gas for secondary cooling; finally, the exhaust fan 36 rotates to discharge the cooled exhaust gas; the entire exhaust system 3 is fixed to the top of the frame 1 by the bracket 37;

[0041] Throughout the process, the control console 4 is electrically connected to the grading mechanism 2, heater 21, air pump 32 and exhaust fan 36 respectively, to achieve coordinated control of independent smelting and exhaust gas emission; through this synergistic effect of graded smelting and cooling exhaust, this utility model solves the problem of the simple structure and lack of safe exhaust gas treatment in the existing smelting device.

Claims

1. A high-strength and high-toughness ductile iron composite alloying melting device for wind power castings, comprising a frame (1); a partition (6) is fixedly connected inside the frame (1), and a heat insulation pad (7) is fixedly connected to the outer wall of the partition (6); a grading mechanism (2) is defined between the frame (1), the partition (6), and the heat insulation pad (7). The grading mechanism (2) includes a heater (21) disposed at the bottom of the inner wall of the frame (1) and a smelting furnace (22) disposed at the heating end of the heater (21); Its features are, It also includes a smoke exhaust mechanism (3) disposed at the top of the frame (1); The smoke exhaust mechanism (3) includes an air pump (32), an air supply pipe (34) connected to the top of the air pump (32), and an exhaust fan (36) disposed at the middle of the top of the air supply pipe (34). The top of the frame (1) is provided with a connection hole (5), and the top middle of the smelting furnace (22) is connected to a connecting pipe (28). The air pump (32) passes through the connection hole (5) and is connected to the air pipe (34). A control console (4) is provided on the left side of the outer wall of the frame (1). The control console (4) is electrically connected to the heater (21), the air pump (32) and the exhaust fan (36) respectively.

2. The high-strength and high-toughness ductile iron composite alloying melting device for wind power castings according to claim 1, characterized in that, The outer wall of the smelting furnace (22) is rotatably connected to a feeding door (23), an observation window (25) is fixedly connected to the middle of the front side of the feeding door (23), and a handle (29) is fixedly connected to the bottom of the front side of the feeding door (23).

3. The high-strength and high-toughness ductile iron composite alloying melting device for wind power castings according to claim 2, characterized in that, The top left and right sides of the feeding gate (23) are rotatably connected to a rotating shaft (24), and the other end of the rotating shaft (24) is fixedly connected to the smelting furnace (22). The left and right sides of the bottom front side of the feeding gate (23) are threadedly connected to a retainer (26).

4. The high-strength and high-toughness ductile iron composite alloying melting device for wind power castings according to claim 1, characterized in that, Pressure valves (27) are provided on both the left and right sides of the top of the smelting furnace (22).

5. The high-strength and high-toughness ductile iron composite alloying melting device for wind power castings according to claim 1, characterized in that, The top end of the connecting pipe (28) is threaded with a flange ring (31), the top end of the flange ring (31) is connected to the air pump (32), and the outer wall of the air pump (32) is provided with a heat absorption ring (33).

6. The high-strength and high-toughness ductile iron composite alloying melting device for wind power castings according to claim 1, characterized in that, Graphene plates (35) are fixedly connected to both the front and rear sides of the gas transmission pipe (34).

7. The high-strength and high-toughness ductile iron composite alloying melting device for wind power castings according to claim 1, characterized in that, The bottom left and right sides of the gas pipeline (34) are fixedly connected to brackets (37), and the bottoms of the two brackets (37) are respectively fixedly connected to the top left and right sides of the frame (1).

8. The high-strength and high-toughness ductile iron composite alloying melting device for wind power castings according to claim 1, characterized in that, The console (4) is electrically connected to the grading mechanism (2).

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