A smoke removal device for an intermediate frequency steel shell furnace

Abstract

The utility model discloses a kind of intermediate frequency steel shell furnace smoke removal devices, including trolley, heightening stand, cooling water tank, cyclone dust collector, adjustable smoke hood, electric telescopic rod, fan, heat exchange tube and metal bellows, fan is fixed in the top of heightening stand, adjustable smoke hood is located in the downside of heightening stand, the air inlet of fan is connected with adjustable smoke hood by metal bellows, the number of electric telescopic rod is two and fixed in the top of heightening stand, the telescopic end of electric telescopic rod is fixed with the upper end of adjustable smoke hood, electric telescopic rod is used to drive adjustable smoke hood to move up and down, heat exchange tube is fixedly installed in cooling water tank, the air outlet of fan is connected with the upper end of heat exchange tube by pipeline, the lower end of heat exchange tube is connected with the lower end of cyclone dust collector by pipeline.The utility model is convenient to move, convenient to adjust size, convenient for the smoke of different size models of intermediate frequency steel shell furnace to be absorbed and handled.

Description

Technical Field

[0001] This utility model relates to the field of medium-frequency steel shell furnace technology, and in particular to a smoke removal device for medium-frequency steel shell furnace. Background Technology

[0002] The medium-frequency power supply of the medium-frequency steel shell furnace first converts three-phase AC power into single-phase DC power through thyristors, and then inverts it into 100-10000Hz pulsed AC power by an inverter bridge. This current flows to the heating coil made of copper tubing, generating a strong magnetic flux with instantaneous polarity changes within the coil. When a metal or other object to be heated is placed inside the coil, the magnetic flux penetrates the object, generating a large eddy current within it in the opposite direction to the heating current. Due to the resistance of the object, Joule heating is generated, causing the object's temperature to rise rapidly, thus heating the metal material.

[0003] Medium-frequency induction furnaces generate dust-containing flue gas during metal smelting, which can harm the environment and human health if not properly treated. Most existing medium-frequency induction furnaces are open-type and lack flue gas treatment capabilities. While some have flue gas filtration functions, their fixed structures limit their applicability to specific furnace models. Therefore, there is an urgent need to develop a mobile, easily adjustable flue gas removal device for medium-frequency induction furnaces of different sizes and models to overcome current shortcomings and meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide a smoke removal device for a medium-frequency steel shell furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A smoke removal device for a medium-frequency steel shell furnace includes a trolley, a heightening frame, a cooling water tank, a cyclone dust collector, an adjustable fume hood, electric telescopic rods, a fan, heat exchange tubes, and a metal corrugated pipe. The heightening frame, cooling water tank, and cyclone dust collector are all fixedly mounted on the trolley. The fan is fixed to the top of the heightening frame. The adjustable fume hood is located below the heightening frame. The fan's air inlet is connected to the adjustable fume hood via the metal corrugated pipe. Two electric telescopic rods are fixed to the top of the heightening frame. The telescopic ends of the electric telescopic rods are fixed to the upper end of the adjustable fume hood. The electric telescopic rods are used for... The adjustable fume hood moves up and down. The heat exchange tube is fixedly installed in the cooling water tank. The air outlet of the fan is connected to the upper end of the heat exchange tube through a pipe. The lower end of the heat exchange tube is connected to the lower end of the cyclone dust collector through a pipe. The adjustable fume hood includes: an upper hood body, an extended hood, screws, and nuts. Multiple extended hoods are provided on the lower side of the upper hood body. Two screws are fixed on each extended hood. A nut can be detachably installed on each screw. The upper hood body and the extended hoods are detachably connected by screws and nuts. Multiple extended hoods are detachably connected by screws and nuts.

[0006] Preferably, the multiple elongated covers gradually increase in size from top to bottom.

[0007] Preferably, the cooling water tank has an inlet at the top and an outlet at the bottom.

[0008] Preferably, the heat exchange tube is made of copper.

[0009] Preferably, the bottom of the trolley is fixedly equipped with multiple casters, and only the casters have foot brakes.

[0010] Preferably, the top of the cyclone dust collector is provided with an air outlet pipe.

[0011] The beneficial effects of this utility model are as follows: When using this medium-frequency steel shell furnace smoke removal device, push the trolley to move the adjustable smoke hood above the medium-frequency steel shell furnace, then brake the casters. Then, adjust the adjustable smoke hood according to the size and height of the medium-frequency steel shell furnace. The adjustable smoke hood is moved up and down by the electric telescopic rod, thereby adjusting the distance between the adjustable smoke hood and the medium-frequency steel shell furnace. Then, adjust the number of extended hoods connected to the lower side of the upper hood to adjust the maximum diameter of the adjustable smoke hood to match medium-frequency steel shell furnaces of different diameters. When the medium-frequency steel shell furnace produces flue gas during combustion, start the fan to draw it in. The flue gas is drawn in from the adjustable smoke hood and then transported to the heat exchange tube. External tap water is transported from the inlet to the cooling water tank. The tap water cools the flue gas in the heat exchange tube. The cooled flue gas enters the cyclone dust collector to remove dust. Finally, the purified flue gas is discharged from the outlet pipe. In summary, this utility model is easy to move and adjust in size, making it convenient for absorbing and treating flue gas from medium-frequency steel shell furnaces of different sizes and models. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the usage state of this utility model.

[0014] Figure 3 This is a schematic diagram of the flue gas flow direction of this utility model.

[0015] Figure 4 This is an internal view of the cooling water tank in this utility model.

[0016] Figure 5 This is a perspective view of the adjustable smoke hood of this utility model.

[0017] Figure 6 This is a schematic diagram showing the disassembled state of the adjustable smoke hood in this utility model.

[0018] Legend: 1. Trolley; 101. Casters; 2. Raising frame; 3. Cooling water tank; 301. Water inlet; 302. Water outlet; 4. Cyclone dust collector; 401. Air outlet pipe; 5. Adjustable fume hood; 501. Upper hood body; 502. Extended hood; 503. Screw; 504. Nut; 6. Electric telescopic rod; 7. Fan; 8. Heat exchange tube; 9. Metal corrugated pipe. Detailed Implementation

[0019] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Specific implementation examples are given below.

[0021] See Figures 1-6 In this embodiment of the utility model, a smoke removal device for a medium-frequency steel shell furnace includes a trolley 1, a heightening frame 2, a cooling water tank 3, a cyclone dust collector 4, an adjustable fume hood 5, an electric telescopic rod 6, a fan 7, a heat exchange tube 8, and a metal corrugated pipe 9. The heightening frame 2, cooling water tank 3, and cyclone dust collector 4 are all fixedly installed on the trolley 1. The fan 7 is fixed to the top of the heightening frame 2. The adjustable fume hood 5 is located below the heightening frame 2. The air inlet of the fan 7 is connected to the adjustable fume hood 5 through the metal corrugated pipe 9. Two electric telescopic rods 6 are fixed to the top of the heightening frame 2. The telescopic ends of the electric telescopic rods 6 are fixed to the upper end of the adjustable fume hood 5, and a heat insulation plate (not shown in the figure) is fixed to the head of the telescopic end of the electric telescopic rod 6. The heat insulation plate reduces the heat transfer from the adjustable fume hood 5 to the electric telescopic rods 6. The electric telescopic rods 6 are used to drive the adjustable fume hood 5. The adjustable fume hood 5 moves up and down. The heat exchange tube 8 is fixedly installed in the cooling water tank 3. The air outlet of the fan 7 is connected to the upper end of the heat exchange tube 8 through a pipe. The lower end of the heat exchange tube 8 is connected to the lower end of the cyclone dust collector 4 through a pipe. The top of the cyclone dust collector 4 is provided with an air outlet pipe 401. The adjustable fume hood 5 includes: an upper hood body 501, an extended hood 502, a screw 503, and a nut 504. Multiple extended hoods 502 are provided on the lower side of the upper hood body 501. Two screws 503 are fixed on each extended hood 502. A nut 504 can be detachably installed on each screw 503. The upper hood body 501 and the extended hoods 502 are detachably connected through the screws 503 and the nuts 504. The multiple extended hoods 502 are detachably connected through the screws 503 and the nuts 504. The multiple extended hoods 502 gradually increase in size from top to bottom.

[0022] The cooling water tank 3 has an inlet 301 at the top and an outlet 302 at the bottom. In use, the inlet 301 is connected to an external tap water source through a pipe, and the outlet 302 is connected to a hot water collection tank through a pipe to collect hot water for use.

[0023] The heat exchange tube 8 is made of copper, which gives it good thermal conductivity.

[0024] The bottom of the trolley 1 is fixedly equipped with multiple casters 101, each of which has a foot brake, so that the trolley 1 can be moved.

[0025] The switch buttons for the electric telescopic rod 6 and the fan 7 are both installed on the trolley 1.

[0026] Working principle: When using this medium-frequency steel shell furnace smoke removal device, push the trolley 1 to move the adjustable smoke hood 5 above the furnace, then brake the casters 101. Next, adjust the adjustable smoke hood 5 according to the size and height of the furnace. The electric telescopic rod 6 moves the adjustable smoke hood 5 up and down, thus adjusting the distance between the adjustable smoke hood 5 and the furnace. Finally, adjust the number of extended covers 502 connected to the lower side of the upper cover 501 to further adjust the distance. The maximum diameter of the adjustable fume hood 5 is adjusted to match the diameter of medium-frequency steel shell furnaces of different sizes. When the flue gas generated by the combustion of the medium-frequency steel shell furnace is drawn in by the fan 7, the flue gas is drawn in from the adjustable fume hood 5 and then transported to the heat exchange tube 8. External tap water is transported from the water inlet 301 to the cooling water tank 3. The flue gas in the heat exchange tube 8 is cooled by the tap water. The cooled flue gas enters the cyclone dust collector 4 to remove dust. Finally, the purified flue gas is discharged from the exhaust pipe 401.

[0027] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A smoke removal device for a medium-frequency steel shell furnace, characterized in that, The system includes a trolley (1), a booster frame (2), a cooling water tank (3), a cyclone dust collector (4), an adjustable fume hood (5), an electric telescopic rod (6), a fan (7), a heat exchange tube (8), and a metal corrugated pipe (9). The booster frame (2), cooling water tank (3), and cyclone dust collector (4) are all fixedly installed on the trolley (1). The fan (7) is fixed to the top of the booster frame (2). The adjustable fume hood (5) is located on the lower side of the booster frame (2). The air inlet of the fan (7) is connected to the adjustable fume hood (5) through the metal corrugated pipe (9). There are two electric telescopic rods (6) and they are fixed to the top of the booster frame (2). The telescopic end of the electric telescopic rod (6) is fixed to the upper end of the adjustable fume hood (5). The electric telescopic rod (6) is used to drive the adjustable fume hood (5) to move up and down. The heat exchange tube (8) The adjustable fume hood (5) is fixedly installed in the cooling water tank (3). The outlet of the fan (7) is connected to the upper end of the heat exchange tube (8) through a pipe. The lower end of the heat exchange tube (8) is connected to the lower end of the cyclone dust collector (4) through a pipe. The adjustable fume hood (5) includes: an upper hood body (501), an extended hood (502), a screw (503) and a nut (504). Multiple extended hoods (502) are provided on the lower side of the upper hood body (501). Two screws (503) are fixed on each extended hood (502). A nut (504) can be detachably installed on each screw (503). The upper hood body (501) and the extended hood (502) are detachably connected through the screw (503) and the nut (504). Multiple extended hoods (502) are detachably connected through the screw (503) and the nut (504).

2. The smoke removal device for a medium-frequency steel shell furnace according to claim 1, characterized in that, The multiple elongated covers (502) gradually increase in size from top to bottom.

3. The smoke removal device for a medium-frequency steel shell furnace according to claim 1, characterized in that, The cooling water tank (3) has an inlet (301) at the top and an outlet (302) at the bottom.

4. The smoke removal device for a medium-frequency steel shell furnace according to claim 1, characterized in that, The heat exchange tube (8) is made of copper.

5. The smoke removal device for a medium-frequency steel shell furnace according to claim 1, characterized in that, The bottom of the trolley (1) is fixedly equipped with multiple casters (101), and each caster (101) has a foot brake.

6. The smoke removal device for a medium-frequency steel shell furnace according to claim 1, characterized in that, The top of the cyclone dust collector (4) is provided with an air outlet pipe (401).

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