Movable flue gas collecting device

Abstract

The utility model discloses a movable smoke collecting device which comprises a gas collecting hood and a smoke guide pipe, the gas collecting hood is connected with the smoke guide pipe through a bendable and foldable smoke pipe, a traction mechanism is arranged on the gas collecting hood, and the gas collecting hood is put down or pulled up through the traction mechanism; the smoke guide pipe is arranged between the adjacent smoke generation devices, a driving mechanism is installed beside the smoke guide pipe, a driven mechanism is arranged on the smoke guide pipe, and the driving mechanism is connected with the driven mechanism to drive the smoke guide pipe to rotate so that the gas collecting hood can be switched over the adjacent smoke generation devices. Therefore, the flue gas recovery devices can be shared by the left and right adjacent intermediate frequency furnaces, so that the number of gas collection devices is reduced, the space of an operation platform is saved, and the cost is reduced; meanwhile, the flexible smoke pipe is connected with the gas collecting hood, and a traction mechanism is arranged, so that when no smoke is generated when the temperature reaches about 1000 DEG C, the gas collecting hood can be folded, the situation that the heat preservation material is damaged quickly due to high-temperature barbecue is prevented, and the service life can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas collection devices, in particular to a flue gas collection device that can be used in occasions such as medium-frequency furnaces for melting ferrophosphorus of electrolytic anodes. Background Art

[0002] Flue gas collection is a widespread problem in industrial production. For example, the cathode of a pre-baked electrolytic cell is connected to the steel claw of the guide rod by means of ferrophosphorus casting. The main components of ferrophosphorus include elements such as C, Si, Mn, P, and S. Before ferrophosphorus casting, it must be melted and slag removed in a medium-frequency furnace. When the temperature of ferrophosphorus reaches about 1345 °C, the casting assembly of the anode guide rod steel claw and the anode block is carried out. Since ferrophosphorus contains elements such as C, P, and S, harmful gases and dust will be generated during the heating and melting process. These flue gases will have an adverse impact on operators and the working environment, so they must be recovered and treated. At present, flue gas recovery usually adopts a single gas collection and recovery method, that is, a gas collection hood is installed above each furnace, and the gas collection hood is connected to the smoke collection pipe. The position of the dust collection device is fixed, which will affect the addition of materials such as ferrophosphorus in the furnace; the number of flue gas recovery devices is large, which not only increases the cost but also occupies the space of the medium-frequency furnace operation platform; at the same time, the gas collection hood is fixedly installed above the furnace mouth. When the melting temperature reaches about 1000 °C, almost no flue gas is generated, but the gas collection hood still needs to be baked at high temperature, resulting in serious deformation of the gas collection hood during long-term operation at high temperature, rapid damage of the internal heat-resistant layer, and affecting the service life. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a movable flue gas collection device with a more reasonable structural design, which can reduce the quantity, lower the cost, reduce the occupied operation space, avoid high-temperature baking, and have a longer service life in view of the shortcomings of the prior art.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme: A movable flue gas collection device includes a gas collection hood and a smoke guide pipe. It is characterized in that: the gas collection hood is connected to the smoke guide pipe through a bendable and foldable smoke pipe. A pulling mechanism is arranged on the gas collection hood, and the gas collection hood is lowered to hang directly above the flue gas generating equipment or pulled up to leave the flue gas generating equipment through the pulling mechanism; the smoke guide pipe is arranged between adjacent flue gas generating equipment, a driving mechanism is installed beside the smoke guide pipe, and a driven mechanism is arranged on the smoke guide pipe. A structure that can drive the smoke guide pipe to rotate is formed by connecting the driving mechanism and the driven mechanism to realize the switching of the gas collection hood directly above adjacent flue gas generating equipment.

[0005] Furthermore, the smoke guide pipe is an inverted L-shaped structure, the bendable and foldable smoke pipe is connected to the horizontal section interface of the smoke guide pipe, the driven mechanism is arranged on the vertical section of the smoke guide pipe, and the driving mechanism is arranged beside the vertical section of the smoke guide pipe.

[0006] Further, the driving mechanism includes a motor, and the motor is connected with a gear; the driven mechanism is a gear ring, the gear ring is fixedly surrounded on the outer wall of the vertical section of the smoke guide pipe, and the gear meshes with the gear ring.

[0007] Further, the pulling mechanism includes a winch and a pulling rope, and the winch is arranged on the top surface of the smoke guide pipe; a fixing ring is arranged on the side surface of the air collecting hood, and the pulling rope is connected from the winch to the fixing ring.

[0008] Further, a positioning plate extending downward is arranged at the bottom of the part where the smoke guide pipe is connected with the bendable and foldable smoke pipe, and the side wall of the bendable and foldable smoke pipe is abutted by the positioning plate after the air collecting hood is put down.

[0009] Further, the bendable and foldable smoke pipe adopts a flexible smoke pipe with a framework type folding structure.

[0010] Further, the smoke guide pipe is arranged at the middle position between two adjacent flue gas generating devices, and the distances between it and the two adjacent flue gas generating devices are basically the same; the bottom end of the smoke guide pipe is connected with a main smoke pipe.

[0011] By adopting the rotary installation structure, the air collecting device of the present utility model can rotate and move, realizing the sharing of the flue gas recovery device by the left and right adjacent intermediate frequency furnaces, thereby reducing the number of air collecting devices (it can be reduced by half), saving the space of the operation platform and reducing the cost; at the same time, a flexible smoke pipe is adopted to connect the air collecting hood and a pulling mechanism is arranged. When there is no flue gas generated at about 1000°C, the air collecting hood can be retracted to prevent it from being damaged quickly due to high-temperature baking, so as to extend the service life. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the present utility model.

[0013] In the figure, 11 is the No. 1 furnace, 12 is the No. 2 furnace, 21 is the main smoke pipe, 22 is the smoke guide pipe, 23 is the flexible smoke pipe, 3 is the air collecting hood, 31 is the fixing ring, 4 is the winch, 41 is the pulling rope, 51 is the motor, 52 is the gear, 53 is the gear ring, and 6 is the positioning plate. Detailed Embodiment

[0014] In this embodiment, with reference to Figure 1The movable smoke collecting device includes a gas collecting hood 3 and a smoke guiding pipe 22. The gas collecting hood 3 is connected to the smoke guiding pipe 22 through a bendable and foldable smoke pipe. A pulling mechanism is arranged on the gas collecting hood 3. When smoke needs to be collected, the gas collecting hood 3 is lowered to be suspended above the smoke generating device (such as the No. 1 furnace 11 of the intermediate frequency furnace) through the pulling mechanism; when the temperature reaches about 1000°C and no smoke is generated, the gas collecting hood is pulled up to be perpendicular to the smoke guiding pipe 22 through the pulling mechanism to leave the smoke generating device. The smoke guide pipe 22 is arranged between adjacent smoke generating devices, and a driving mechanism is installed next to the smoke guide pipe 22, and a driven mechanism is arranged on the smoke guide pipe 22. The driving mechanism is connected with the driven mechanism to form a structure that can drive the smoke guide pipe 22 to rotate, so that the gas collecting hood 3 can be switched directly above the adjacent smoke generating equipment, for example, from above the 1# furnace 11 to above the 2# furnace 12, to achieve a one-to-two effect.

[0015] The smoke guide pipe 22 is an inverted L-shaped structure. The bendable and foldable smoke pipe is connected to the horizontal section interface of the smoke guide pipe 22. The driven mechanism is arranged on the vertical section of the smoke guide pipe 22, and the driving mechanism is arranged beside the vertical section of the smoke guide pipe 22.

[0016] The driving mechanism includes a motor 51, and the motor 51 is connected to a gear 52; the driven mechanism is a gear ring 53, and the gear ring 53 is fixed around the outer wall of the vertical section of the smoke guide pipe 22, and the gear 52 is meshed with the gear ring 53. When it is necessary to switch the gas collecting hood 3, the motor 51 is started, and the gear ring 53 is driven to rotate through the gear 52, thereby driving the smoke guide pipe 22 to rotate, so that the gas collecting hood 3 is turned to the other side.

[0017] The pulling mechanism includes a winch 4 (a small winch can be used) and a pull rope 41. The winch 4 is arranged on the top surface of the smoke guide pipe 22. A fixing ring 31 is arranged on the side of the gas collecting hood 3. The pull rope 41 is connected from the winch 4 to the fixing ring 31. The pull rope 41 can be a steel wire rope, which is wound by the winch 4 to pull up the gas collecting hood 3 to be horizontally aligned with the smoke guide pipe 22 (i.e., perpendicular to each other). After the winch 4 unwinds the pull rope 41, the gas collecting hood 3 can be lowered so that it covers the intermediate frequency furnace to collect smoke.

[0018] A downwardly extending positioning plate 6 is provided at the bottom of the portion where the smoke guide pipe 22 is connected to the bendable and foldable smoke pipe. After the gas collecting hood 3 is lowered, the positioning plate 6 abuts against the side wall of the bendable and foldable smoke pipe, so that the posture of the gas collecting hood 3 can be kept more stable after being lowered.

[0019] The bendable and foldable smoke pipe adopts a skeleton-folded flexible smoke pipe 23, such as a smoke pipe used in a range hood.

[0020] The smoke guide pipe 22 is arranged at the middle position between the adjacent No. 1 furnace 11 and No. 2 furnace 12, and the distances from it to the No. 1 furnace 11 and the No. 2 furnace 12 are basically the same; the bottom end of the smoke guide pipe 22 is connected with a main smoke pipe 21, which is used for collecting the flue gas collected by each gas collecting hood 3.

[0021] The above has made a detailed description of the present utility model. As described above, it is only the preferred embodiment of the present utility model, and the scope of implementation of the present utility model cannot be limited. That is, all equal changes and modifications made according to the scope of this application should still fall within the scope covered by the present utility model.

Claims

1. A movable smoke collecting device, comprising a smoke collecting hood and a smoke guiding pipe, characterized in that: The gas collecting hood is connected to the smoke guiding pipe through a bendable and foldable smoke pipe. A pulling mechanism is provided on the gas collecting hood, through which the gas collecting hood is lowered to be suspended directly above the smoke generating device or the gas collecting hood is pulled up to leave the smoke generating device; the smoke guiding pipe is arranged between adjacent smoke generating devices, a driving mechanism is installed next to the smoke guiding pipe, and a driven mechanism is arranged on the smoke guiding pipe. The driving mechanism is connected to the driven mechanism to form a structure that can drive the smoke guiding pipe to perform rotational motion so as to realize switching of the gas collecting hood directly above the adjacent smoke generating device.

2. The movable smoke collecting device according to claim 1, characterized in that: The smoke guide pipe is an inverted L-shaped structure. The bendable and foldable smoke pipe is connected to the horizontal section interface of the smoke guide pipe. The driven mechanism is arranged on the vertical section of the smoke guide pipe, and the driving mechanism is arranged beside the vertical section of the smoke guide pipe.

3. The movable smoke collecting device according to claim 1 or 2, characterized in that: The driving mechanism comprises a motor, which is connected to a gear; the driven mechanism is a gear ring, which is fixed around the outer wall of the vertical section of the smoke guide pipe, and the gear is meshed with the gear ring.

4. The movable smoke collecting device according to claim 1 or 2, characterized in that: The pulling mechanism includes a winch and a pull rope, the winch is arranged on the top surface of the smoke guide pipe; a fixing ring is arranged on the side of the gas collecting hood, and the pull rope is connected from the winch to the fixing ring.

5. The movable smoke collecting device according to claim 1 or 2, characterized in that: A positioning plate extending downward is arranged at the bottom of the portion where the smoke guide pipe is connected to the bendable and foldable smoke pipe. After the gas collecting hood is lowered, the positioning plate abuts against the side wall of the bendable and foldable smoke pipe.

6. The movable smoke collecting device according to claim 5, characterized in that: The bendable and foldable smoke tube is a skeleton-type foldable flexible smoke tube.

7. The movable smoke collecting device according to claim 1, characterized in that: The smoke guide pipe is arranged in the middle of two adjacent smoke generating devices, and the distance between the smoke guide pipe and the two adjacent smoke generating devices is substantially the same; the bottom end of the smoke guide pipe is connected to the main smoke pipe.

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