Air quenching and rapid cooling device of LF (ladle furnace) for premelting type refining slag

Abstract

The utility model relates to the technical field of air-quenching rapid-cooling devices, and provides an air-quenching rapid-cooling device of an LF (ladle furnace) for premelting refining slag, which comprises a bottom plate, a support fixedly mounted at the top of the bottom plate, a fixed cylinder fixedly connected to the top of the support, sealing plates fixedly connected to two ends of the fixed cylinder, and an air-quenching device fixedly connected to the bottom of the bottom plate, an upper connecting block is fixedly mounted at the top of the fixing cylinder, an exhaust fan is fixedly mounted at the top of the upper connecting block, a filter box and a supporting table are fixedly connected to one side of the exhaust fan, the exhaust fan is fixedly mounted on one side of the top of the bottom plate, and a driving motor is fixedly mounted at the top of the supporting table. According to the air quenching rapid cooling device of the LF furnace for the pre-melting type refining slag, the round chute and the sealing plate are adopted, the position of the cooling cylinder can be limited, in addition, the cooling cylinder can rotate more stably, the filter box is adopted, generated harmful gas can be filtered, the filter plate can be efficiently disassembled and assembled, and the air quenching rapid cooling device is convenient to use and high in practicability. And the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind quenching and rapid cooling, in particular to a wind quenching and rapid cooling device for a LF furnace used for pre-melting refined slag. Background Art

[0002] With the widespread adoption of ladle furnace (LF) refining technology, the amount of waste slag produced (referred to as LF slag) in my country has been growing rapidly year by year. However, its large-scale storage has resulted in land waste and environmental pollution. LF slag contains significant amounts of minerals such as heptaaluminum dodecahydrate (C12A7) and dicalcium silicate (C2S), making it a more promising cementitious material than other steel slags.

[0003] Currently, a Chinese patent publication numbered CN215799656U discloses a rapid air quenching cooling device for a pre-melted refined slag LF furnace. The device comprises a horizontally arranged rotating drum, a cooling drum axially tilted and fixed inside the rotating drum, and a drive mechanism for driving the rotating drum to rotate. The rotating drum has openings at both ends, and a baffle is provided at one end of the rotating drum to form a semi-enclosed structure at one end of the rotating drum, with the axis of the rotating drum passing through the baffle. The utility model drives the cooling drum to rotate synchronously when the rotating drum rotates. During this rotation, the positions of the two ends of the cooling drum continuously change, i.e., the inclined surface inside the cooling drum continuously changes, thereby causing the refined slag to repeatedly move toward the two ends within the cooling drum, fully contacting the cold air, improving the air cooling effect, and rapidly cooling the LF furnace refined slag, preventing the refined slag from reacting with water, thereby ensuring the gelling activity of the furnace refined slag. Furthermore, the cooling process occurs in a relatively closed environment, which can reduce environmental pollution and be more environmentally friendly.

[0004] However, during the implementation of the above technical solution, at least the following technical problems were found:

[0005] The above device uses a support frame to support the cooling cylinder. Long-term use will damage the support frame, which is not conducive to the rotation of the auxiliary cooling cylinder. In addition, using blades to dissipate heat from the gas inside the rotating cylinder is not effective, and the exhausted gas will pollute the atmosphere, which is not very practical. For this reason, we proposed an air quenching rapid cooling device for the LF furnace for pre-melted refined slag. Utility Model Content

[0006] (1) Technical problems solved

[0007] In response to the deficiencies in the prior art, the utility model provides an air quenching rapid cooling device for an LF furnace for pre-melted refined slag, which solves the technical problem that the above-mentioned device uses a support frame to support the cooling cylinder, which will cause damage to the support frame if used for a long time, and is not conducive to the rotation of the auxiliary cooling cylinder. In addition, the use of blades to dissipate the heat of the gas inside the rotating cylinder is not effective, and the discharged gas will pollute the atmosphere, which solves the technical problem of low practicality.

[0008] (2) Technical solution

[0009] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A base plate, with a bracket fixedly installed on the top, a fixed cylinder fixedly connected to the top of the bracket, sealing plates fixedly connected to both ends of the fixed cylinder, an upper connecting block fixedly installed on the top of the fixed cylinder, an exhaust fan fixedly installed on the top of the upper connecting block, a filter box fixedly connected to one side of the exhaust fan, a support platform, which is fixedly installed on one side of the top of the base plate, and a drive motor fixedly installed on the top of the support platform.

[0011] Preferably, a driving gear is fixedly installed on the output end of the driving motor, the driving gear is meshedly connected with a driven gear, and a cooling cylinder is fixedly embedded inside the driven gear. By adopting the above technical solution, the cooling cylinder can be efficiently driven to rotate.

[0012] Preferably, a feed port is provided on one side of the cooling cylinder, an air compressor interface is fixedly connected to the side of the cooling cylinder close to the feed port, a discharge port is provided on the other side of the cooling cylinder, smooth grooves are provided at both ends of the cooling cylinder, and a plurality of air holes are provided on the surface of one end of the cooling cylinder. By adopting the above technical solution, the gas temperature increased after the raw material is heated can be discharged from the cooling cylinder through the air holes.

[0013] Preferably, the sealing plate is rotatably connected to the inside of the smooth groove. By adopting the above technical solution, the sealing plate can be rotatably clamped in the inside of the smooth groove, thereby fixing the cooling cylinder and preventing the cooling cylinder from falling off.

[0014] Preferably, a filter plate is clamped inside the filter box, a pull rod is inserted into the top of the filter box, one side of the pull rod is fixedly connected to a connecting rod, one end of the connecting rod is slidably embedded with a guide rod, and one side of the connecting rod is fixedly connected to a spring. By adopting the above technical solution, the filter plate can be fixed.

[0015] Preferably, the exhaust fan is connected to the interlayer of the fixed cylinder and the cooling cylinder through the upper connecting block. By adopting the above technical solution, the hot air in the interlayer can be extracted to improve the wind quenching efficiency of the raw materials.

[0016] Preferably, the air compressor interface is rotatably connected to the cooling cylinder via a bearing. By adopting the above technical solution, the bearing can prevent the cooling cylinder from entangled with the air compressor interface during rotation.

[0017] (3) Beneficial effects

[0018] The utility model can limit the position of the cooling cylinder by adopting a circular groove and a sealing plate, and can also make the rotation of the cooling cylinder more stable. Then, by adopting a filter box, with the cooperation of structures such as the filter plate, the pull rod and the guide rod, the harmful gases generated can be effectively filtered, and the filter plate can be efficiently disassembled and assembled, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the present invention with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 It is a schematic cross-sectional view of an embodiment of the present utility model;

[0022] Figure 3 This is an enlarged structural diagram of the filter assembly at position A in the embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the connection of the filter components in an embodiment of the present utility model.

[0024] Legend: 1. Bottom plate; 101. Bracket; 102. Support platform; 103. Driving motor; 104. Driving gear; 105. Upper connecting block; 2. Fixed cylinder; 21. Sealing plate; 3. Cooling cylinder; 31. Driven gear; 32. Discharge port; 33. Air vent; 34. Feed port; 35. Smooth groove; 4. Air compressor interface; 5. Exhaust fan; 51. Filter box; 52. Filter plate; 53. Pull rod; 54. Guide rod; 55. Connecting rod; 56. Spring. DETAILED DESCRIPTION

[0025] The embodiment of the present application provides an air quenching and rapid cooling device for an LF furnace for pre-melted refined slag. The utility model uses a smooth groove and a sealing plate to limit the position of the cooling cylinder. In addition, it can make the rotation of the cooling cylinder more stable. By using a filter box, with the cooperation of structures such as the filter plate, pull rod and guide rod, the harmful gases generated can be effectively filtered, and the filter plate can be efficiently disassembled and assembled, thereby improving the practicality of the device.

[0026] Example 1

[0027] The technical solution in the embodiment of the present application is to effectively solve the technical problems that the above-mentioned device uses a support frame to support the cooling cylinder, which will be damaged if used for a long time, and is not conducive to the rotation of the auxiliary cooling cylinder. In addition, the use of blades to dissipate heat from the gas inside the rotating cylinder is not effective, and the exhausted gas will cause pollution to the atmosphere, which is not practical. The overall idea is as follows:

[0028] In response to the problems existing in the prior art, the utility model provides an air quenching rapid cooling device for an LF furnace for pre-melted refined slag, the device comprising a base plate 1, a bracket 101 being fixedly mounted on the top of the base plate 1, a fixed cylinder 2 being fixedly connected to the top of the bracket 101, sealing plates 21 being fixedly connected to both ends of the fixed cylinder 2, an upper connecting block 105 being fixedly mounted on the top of the fixed cylinder 2, an exhaust fan 5 being fixedly mounted on the top of the upper connecting block 105, a filter box 51 being fixedly connected to one side of the exhaust fan 5, and a support platform 102 being fixedly mounted on one side of the top of the base plate 1, and a drive motor 103 being fixedly mounted on the top of the support platform 102.

[0029] In some embodiments, a driving gear 104 is fixedly mounted on the output end of the driving motor 103, the driving gear 104 is meshedly connected with a driven gear 31, and a cooling cylinder 3 is fixedly embedded in the interior of the driven gear 31. Figure 1-4 As shown, the driving motor 103 is turned on to drive the driving gear 104 to rotate, and the driving gear 104 drives the driven gear 31 to rotate, and the driven gear 31 rotates, driving the sealing plate 21 on the surface of the cooling cylinder 3 to rotate in the smooth groove 35. A feed port 34 is provided on one side of the cooling cylinder 3, and an air compressor interface 4 is fixedly connected to the side of the cooling cylinder 3 close to the feed port 34. A discharge port 32 is provided on the other side of the cooling cylinder 3. Smooth grooves 35 are provided at both ends of the cooling cylinder 3, and a plurality of air holes 33 are provided on the surface of one end of the cooling cylinder 3. Figure 1-4 As shown, the cooling cylinder 3 rotates so that the air blown into the cooling cylinder 3 from the air compressor interface 4 can fully contact with the raw materials, so that the raw materials can be fully cooled. At this time, the gas in contact with the raw materials is heated and flows to the bottom end of the cooling cylinder 3, and enters the interlayer between the fixed cylinder 2 and the cooling cylinder 3 through the air vent 33. At this time, the exhaust fan 5 is turned on to filter the hot air between the interlayers through the filter plate 52 and release it into the atmosphere to avoid polluting the environment.

[0030] In some embodiments, the sealing plate 21 is rotatably connected to the inside of the smooth groove 35, such as Figure 1-4 As shown, the sealing plate 21 can be rotatably engaged in the inner portion of the circular groove 35 , thereby also fixing the cooling cylinder 3 to prevent the cooling cylinder 3 from falling off.

[0031] In the specific implementation process, when the raw materials need to be air quenched, first connect the air compressor interface 4 to the air compressor, then pour the raw materials into the cooling cylinder 3 from the feed port 34, turn on the drive motor 103 to drive the driving gear 104 to rotate, the driving gear 104 drives the driven gear 31 to rotate, the driven gear 31 rotates, and drives the sealing plate 21 on the surface of the cooling cylinder 3 to rotate in the smooth groove 35, and the cooling cylinder 3 rotates, so that the air blown into the cooling cylinder 3 from the air compressor interface 4 can fully contact with the raw materials, so that the raw materials can be fully cooled. At this time, the gas in contact with the raw materials is heated and flows to the bottom end of the cooling cylinder 3. The air enters the interlayer between the fixing cylinder 2 and the cooling cylinder 3 through the air vent 33. At this time, the exhaust fan 5 is turned on to filter the hot air between the interlayers through the filter plate 52 and release it into the atmosphere to avoid polluting the environment. When the filter plate 52 needs to be replaced, the pull rod 53 is pulled upward. At this time, the connecting rod 55 compresses the spring 56, and the bottom of the pull rod 53 is separated from the hole at the top of the filter plate 52, and the filter plate 52 can be taken out. The new filter plate 52 is placed in the filter box 51 and the pull rod 53 is released. Under the action of the spring 56, the pull rod 53 can be driven into the hole at the top of the filter plate 52 to complete the fixation of the filter plate 52.

[0032] Example 2

[0033] Based on Example 1, this embodiment of the present application is a feasible technical solution for a wind quenching rapid cooling device for a LF furnace for pre-melting refined slag. The overall idea is as follows:

[0034] In some embodiments, a filter plate 52 is clamped inside the filter box 51, a pull rod 53 is inserted at the top of the filter box 51, a connecting rod 55 is fixedly connected to one side of the pull rod 53, a guide rod 54 is slidably embedded at one end of the connecting rod 55, and a spring 56 is fixedly connected to one side of the connecting rod 55. Figure 1-4 As shown, when the filter plate 52 needs to be replaced, the pull rod 53 is pulled upward. At this time, the connecting rod 55 compresses the spring 56, and the bottom of the pull rod 53 is disengaged from the card hole at the top of the filter plate 52, and the filter plate 52 can be taken out. The new filter plate 52 is placed in the filter box 51 and the pull rod 53 is released. Under the action of the spring 56, the pull rod 53 can be driven into the card hole at the top of the filter plate 52, and the filter plate 52 can be fixed.

[0035] Example 3

[0036] Based on Example 1, this embodiment of the present application is a feasible technical solution for a wind quenching rapid cooling device for a LF furnace for pre-melting refined slag. The overall idea is as follows:

[0037] In some embodiments, the exhaust fan 5 is connected to the interlayer between the fixed cylinder 2 and the cooling cylinder 3 through the upper connecting block 105, such as Figure 1-4As shown, the hot air generated by the cooling cylinder 3 can be effectively sucked out, and the air compressor interface 4 is rotatably connected to the cooling cylinder 3 through a bearing, as shown in FIG. Figure 1-4 As shown, the bearing can prevent the cooling cylinder 3 from getting entangled with the air compressor interface 4 during the rotation process.

[0038] Finally, it should be noted that the above embodiments are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to enumerate all embodiments here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A wind quenching rapid cooling device for a LF furnace for pre-melting refined slag, characterized in that: The device includes: A bottom plate (1) is fixedly mounted with a bracket (101) on its top, a fixed cylinder (2) is fixedly connected to the top of the bracket (101), sealing plates (21) are fixedly connected to both ends of the fixed cylinder (2), an upper connecting block (105) is fixedly mounted on the top of the fixed cylinder (2), an exhaust fan (5) is fixedly mounted on the top of the upper connecting block (105), and a filter box (51) is fixedly connected to one side of the exhaust fan (5); A support platform (102) is fixedly mounted on one side of the top of the base plate (1), and a driving motor (103) is fixedly mounted on the top of the support platform (102).

2. The air quenching rapid cooling device for a LF furnace for pre-melted refined slag according to claim 1, characterized in that: A driving gear (104) is fixedly mounted on the output end of the driving motor (103), the driving gear (104) is meshedly connected with a driven gear (31), and a cooling cylinder (3) is fixedly embedded inside the driven gear (31).

3. The air quenching rapid cooling device for a LF furnace for pre-melted refined slag according to claim 2, characterized in that: A feed port (34) is provided on one side of the cooling cylinder (3), an air compressor interface (4) is fixedly connected to the side of the cooling cylinder (3) close to the feed port (34), a discharge port (32) is provided on the other side of the cooling cylinder (3), circular grooves (35) are provided at both ends of the cooling cylinder (3), and a plurality of air holes (33) are provided on the surface of one end of the cooling cylinder (3).

4. The air quenching rapid cooling device for a LF furnace for pre-melted refined slag according to claim 3, characterized in that: The sealing plate (21) is rotatably connected inside the circular groove (35).

5. The air quenching rapid cooling device for a LF furnace for pre-melted refined slag according to claim 1, characterized in that: A filter plate (52) is clamped inside the filter box (51), a pull rod (53) is inserted at the top of the filter box (51), one side of the pull rod (53) is fixedly connected to a connecting rod (55), one end of the connecting rod (55) is slidably embedded with a guide rod (54), and one side of the connecting rod (55) is fixedly connected to a spring (56).

6. The air quenching rapid cooling device for the LF furnace for pre-melted refined slag according to claim 5, characterized in that: A clamping hole is provided on the top of the filter plate (52).

7. The air quenching rapid cooling device for a LF furnace for pre-melted refined slag according to claim 1, characterized in that: The exhaust fan (5) is connected to the interlayer between the fixed cylinder (2) and the cooling cylinder (3) through the upper connecting block (105).

8. The air quenching rapid cooling device for a LF furnace for pre-melted refined slag according to claim 3, characterized in that: The air compressor interface (4) is rotatably connected to the cooling cylinder (3) via a bearing.

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