Smoke removal device for medium-frequency electric furnace

Abstract

The utility model discloses a smoke removal device of a medium-frequency electric furnace and belongs to the technical field of smoke removal of medium-frequency electric furnaces. The smoke removal device for the medium-frequency electric furnace comprises a cover body fixedly arranged on the ground, a smoke collecting cover is fixedly arranged at the top of the cover body, and the top of the smoke collecting cover is connected with a fan through a smoke exhaust pipe; a front door for entering and exiting a steel ladle is arranged on the front surface of the cover body; a notch for a steel ladle lifting rope to pass through is formed in the slope surface of the cover body, and the notch is closed or opened through a baffle mechanism; according to the utility model, the cover body and the smoke collecting cover are combined to seal the medium-frequency electric furnace, the fan is used for sucking and discharging smoke, the smoke surrounding in a plant is reduced, and when the medium-frequency electric furnace is transferred into a steel ladle after smelting is finished, the smoke leakage path is reduced due to the existence of the cover body, so that the smoke leakage is reduced, the smoke discharging and removing effects are better, and the service life of the medium-frequency electric furnace is prolonged. Therefore, the problem that in the prior art, smoke generated by the medium-frequency electric furnace cannot be well restrained is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke removal for medium frequency electric furnaces, in particular to a smoke removal device for medium frequency electric furnaces. Background Art

[0002] The medium frequency electric furnace is the main equipment in the casting, forging and heat treatment workshops. Its working stability, reliability and safety are the guarantee for the normal and stable operation of the casting, forging and heat treatment production lines in the assembly line.

[0003] Existing medium-frequency furnaces are generally open-type, which results in a large amount of heat and smoke escaping. To ensure the required heat output, the power supply must be increased and extended, which wastes a significant amount of energy. Furthermore, the large amount of smoke damages the surrounding environment, produces a strong odor, and affects the health of workers.

[0004] In order to reduce the floating of smoke, the existing technology usually installs a smoke exhaust device above the medium frequency electric furnace, which is either fixed or mobile. Its working method is similar to that of a range hood. Although this type of smoke exhaust device can exhaust smoke, there is a certain distance between the smoke exhaust device and the medium frequency electric furnace. If the power of the smoke exhaust device is insufficient, the smoke will still float in the factory. Therefore, to address this problem, this solution proposes a quasi-enclosed medium frequency electric furnace smoke removal device. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the smoke generated by the medium frequency electric furnace cannot be well suppressed, and to propose a medium frequency electric furnace smoke removal device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The medium frequency electric furnace smoke removal device comprises a cover body fixedly arranged on the ground, a smoke collecting hood fixedly arranged on the top of the cover body, and the top of the smoke collecting hood is connected to the fan through a smoke exhaust pipe;

[0008] The front of the cover body is provided with a main door for entering and exiting the ladle;

[0009] A slot for the ladle rope to pass through is provided on the slope of the cover, and the slot is closed or opened by a baffle mechanism;

[0010] The cover is used to cover the medium frequency electric furnace, and the medium frequency electric furnace is fixedly arranged on the ground and inside the cover.

[0011] Preferably, the baffle mechanism includes a baffle, a telescopic rod, a guide rod and a guide block, the telescopic rod is fixedly arranged on the slope, the telescopic end of the telescopic rod is fixedly connected to the baffle, and the baffle is located at the notch.

[0012] Preferably, the guide block is fixedly arranged on the slope surface, the guide rod is slidably arranged in the guide block, and the end of the guide rod is fixedly connected to the baffle.

[0013] Preferably, an external working platform is fixedly provided on the ground, and the external working platform is located on the rear and side of the cover body, half of which is covered by the cover body. A side door is provided on the side of the cover body, and an internal working platform is fixedly provided on the inner side of the cover body, and the inner working platform is located on the inner side of the side door.

[0014] Preferably, a rear curtain is provided on the rear side of the cover body, and the position corresponding to the rear end of the medium frequency electric furnace is the upper part.

[0015] Preferably, a groove pit is further provided on the ground, and the groove pit is located at the front end of the medium frequency electric furnace and inside the cover.

[0016] Compared with the prior art, the utility model provides a medium frequency electric furnace smoke removal device, which has the following beneficial effects.

[0017] 1. The utility model, through the set cover body and the smoke collecting hood, the combination of the two can seal the medium frequency electric furnace. During the heating and smelting process, the smoke is extracted and exhausted by the fan, reducing the smoke surrounding in the factory. After the smelting is completed, when the steel is transferred to the ladle, the existence of the cover body will reduce the path of smoke leakage, thereby reducing smoke leakage and making the smoke exhaust and smoke removal effect better, thereby solving the problem that the smoke generated by the medium frequency electric furnace in the prior art cannot be well suppressed.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0022] Figure 4 This is a schematic diagram of the main door and notch opening in the present invention.

[0023] In the picture:

[0024] 1. Exhaust pipe; 2. Smoke hood; 3. Slope; 4. Baffle; 5. Telescopic rod; 6. Guide block; 7. Guide rod; 8. Hood body; 9. Main door; 10. Ground; 11. Side door; 12. External working platform; 13. Rear curtain; 14. Groove; 15. Internal working platform; 16. Medium frequency furnace; 17. Notch. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figure 1-4 , a medium frequency electric furnace smoke removal device, comprising a cover body 8 fixedly arranged on the ground 10, a smoke collecting hood 2 fixedly arranged on the top of the cover body 8, and the top of the smoke collecting hood 2 is connected to the fan through a smoke exhaust pipe 1;

[0027] A main door 9 for entering and exiting the ladle is provided on the front of the cover 8;

[0028] The slope 3 of the cover 8 is provided with a slot 17 for the ladle rope to pass through, and the slot 17 is closed or opened by a baffle mechanism;

[0029] The cover 8 is used to cover the medium-frequency electric furnace 16 . The medium-frequency electric furnace 16 is fixedly arranged on the ground 10 and inside the cover 8 .

[0030] In a specific embodiment of the present invention, the cover body 8 and the smoke hood 2 are combined, which is equivalent to isolating the medium frequency electric furnace 16 from the outside world. The smoke generated when the medium frequency electric furnace 16 is working is not easy to leak out, but is sucked away and discharged by the fan, effectively reducing the smoke in the factory and improving the working environment; when the heating and smelting are completed, the main door 9 and the slot 17 are opened, and the molten steel ladle is sent into the cover body 8 to receive the smelted molten steel or molten iron. In this process, due to the existence of the cover body 8 and the smoke exhaust fan is always working, the smoke can be effectively controlled, the smoke in the factory is effectively reduced, and the working environment of the factory is improved.

[0031] The baffle mechanism includes a baffle 4, a telescopic rod 5, a guide rod 7 and a guide block 6. The telescopic rod 5 is fixedly arranged on the slope 3. The telescopic end of the telescopic rod 5 is fixedly connected to the baffle 4, and the baffle 4 is located at the notch 17; the telescopic rod 5 can adopt a telescopic cylinder or a hydraulic rod.

[0032] During the smelting process, the baffle 4 is driven by the telescopic rod 5 to block the slot 17, so that the smoke is not easily leaked from the slot 17. When the smelting is completed, the baffle 4 is driven by the telescopic rod 5 to leave the slot 17, so that the lifting rope of the ladle can enter the slot 17, and then the ladle can smoothly enter the cover 8 to receive molten steel or molten iron.

[0033] In some other embodiments, the slot 17 can also be sealed with a heat-resistant rubber skin, which is specifically configured as follows: the length of the heat-resistant rubber skin is the same as the length of the slot 17, and the width is greater than half of the slot 17, but not greater than the width of the slot 17. Two pieces of heat-resistant rubber skin are provided, and are fixedly provided on the two inner sides of the slot 17 (or fixedly provided on the outer side of the cover body 8 near the slot 7, or fixedly provided on the inner side of the cover body 8 near the slot 7). The movable ends of the two pieces of heat-resistant rubber skin are superimposed on each other, that is, the two pieces of heat-resistant rubber skin are provided. The heat-resistant rubber skin is used to close the slot 17. When the sling enters, the heat-resistant rubber skin is soft and can pass directly between the two heat-resistant rubber skins. After the sling comes out, the two heat-resistant rubber skins are reset to close the slot 17. In addition, only one heat-resistant rubber skin can be provided. When one heat-resistant rubber skin is used, the width of the heat-resistant rubber skin is greater than the width of the slot 17. Then, the end of the heat-resistant rubber skin is fixedly provided on one side of the slot 17, and the other end of the heat-resistant rubber skin covers the other side of the slot 17. At the same time, the baffle mechanism of the slot 17 and the heat-resistant rubber skin of the slot 17 can be provided and used separately, that is, the baffle mechanism is used alone for sealing, or the heat-resistant rubber skin is used alone for sealing. Of course, the two can also be used in combination to achieve a better sealing effect.

[0034] The guide block 6 is fixedly arranged on the slope 3 , the guide rod 7 is slidably arranged in the guide block 6 , and the end of the guide rod 7 is fixedly connected to the baffle 4 .

[0035] The guide block 6 and the guide rod 7 can play a guiding role, so that the baffle 4 can move in a specific direction. At the same time, the guide block 6 and the guide rod 7 can play a limiting role, so that the baffle 4 can always stick to the slope 3.

[0036] An external working platform 12 is fixedly provided on the ground 10, and the external working platform 12 is located on the rear and side of the cover body 8, half of which is covered by the cover body 8. A side door 11 is provided on the side of the cover body 8, and an internal working platform 15 is fixedly provided on the inner side of the cover body 8, and the internal working platform 15 is located on the inner side of the side door 11; the internal working platform 15 can be entered from the side door 11, and when pouring molten iron or steel into the ladle, the staff can stand here to operate for easy observation.

[0037] A rear curtain 13 is provided on the rear side of the cover body 8, and the position corresponding to the rear end of the medium frequency electric furnace 16 is the upper part; the rear curtain 13 can be made of canvas, and there is a certain distance between it and the medium frequency electric furnace 16. Through the setting of the rear curtain 13, it is convenient to add materials to the medium frequency electric furnace 16 from this place, and it can be opened and closed at will to reduce smoke leakage.

[0038] The external working platform 12 can be a platform made of concrete. The height of the external working platform 12 is flush with the medium frequency electric furnace 16, or slightly higher than the medium frequency electric furnace 16. During the process of adding materials to the medium frequency electric furnace 16, materials can be added on the external working platform 12. Since the external working platform 12 has a certain height, it is more convenient to add materials to the medium frequency electric furnace 16.

[0039] A groove pit 14 is also provided on the ground 10. The groove pit 14 is located at the front end of the medium frequency electric furnace 16 and inside the cover 8. The groove pit 14 can provide a certain space for the ladle, which is convenient for adjusting the upper and lower positions of the ladle in the cover 8. When pouring molten steel or molten iron into the ladle, if molten steel or molten iron splashes out, the groove pit 14 can be used to store it.

[0040] Working process: When smelting, close the side door 11 and the main door 9, and make the baffle 4 block the notch 17, and start the fan, then add the smelting material to the medium frequency electric furnace 16 from the rear curtain 13, and then smelt. The smoke generated during the smelting process rises and gathers at the smoke hood 2, and is then sucked away and discharged by the fan. If you need to add materials during the smelting process, you can also add materials from the rear curtain 13. The rear curtain 13 opens and closes at will to reduce smoke leakage; after the smelting is completed, open the main door 9 and the notch 17 , and then the lifting mechanism moves the ladle with the lifting rope entering from the slot 17, and the ladle enters from the door. After the ladle enters, it is adjusted to a suitable position and the main door 9 can be closed (because a large amount of smoke will be generated when pouring molten steel or molten iron). The operator enters from the side door 11 to the inner working platform 15 to operate the medium frequency electric furnace 16 to pour the molten iron or molten steel into the ladle. After pouring, open the main door 9, move out the ladle, and then close the main door 9 and the slot 17 to prepare for the next operation.

[0041] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. Medium frequency electric furnace smoke removal device, characterized in that: It comprises a cover body (8) fixedly arranged on the ground (10), a smoke collecting hood (2) fixedly arranged on the top of the cover body (8), and the top of the smoke collecting hood (2) is connected to the fan via a smoke exhaust pipe (1); The front of the cover body (8) is provided with a main door (9) for entering and exiting the ladle; A notch (17) for the ladle rope to pass through is provided on the slope (3) of the cover body (8), and the notch (17) is closed or opened by a baffle mechanism; The cover (8) is used to cover the medium-frequency electric furnace (16), and the medium-frequency electric furnace (16) is fixedly arranged on the ground (10) and inside the cover (8).

2. The medium frequency electric furnace smoke removal device according to claim 1, characterized in that: The baffle mechanism comprises a baffle (4), a telescopic rod (5), a guide rod (7) and a guide block (6); the telescopic rod (5) is fixedly arranged on the slope (3); the telescopic end of the telescopic rod (5) is fixedly connected to the baffle (4); and the baffle (4) is located at the notch (17).

3. The medium frequency electric furnace smoke removal device according to claim 2, characterized in that: The guide block (6) is fixedly arranged on the slope (3), the guide rod (7) is slidably arranged in the guide block (6), and the end of the guide rod (7) is fixedly connected to the baffle (4).

4. The medium frequency electric furnace smoke removal device according to claim 1, characterized in that: An external working platform (12) is fixedly provided on the ground (10), and the external working platform (12) is located on the rear and side of the cover body (8), half of which is covered by the cover body (8). A side door (11) is provided on the side of the cover body (8), and an internal working platform (15) is fixedly provided on the inner side of the cover body (8), and the internal working platform (15) is located on the inner side of the side door (11).

5. The medium frequency electric furnace smoke removal device according to claim 1, characterized in that: A rear curtain (13) is provided on the rear side of the cover body (8), and the position corresponding to the rear curtain (13) is the upper rear end of the medium-frequency electric furnace (16).

6. The medium frequency electric furnace smoke removal device according to claim 1, characterized in that: A groove pit (14) is also provided on the ground (10), and the groove pit (14) is located at the front end of the medium-frequency electric furnace (16) and inside the cover (8).

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