Automatic raw material feeding device of magnesium smelting vertical reduction furnaceTechnical Field
The invention relates to the technical field of vertical reduction furnaces, in particular to an automatic raw material feeding device of a magnesium smelting vertical reduction furnace.
Background
At present, magnesium smelting mainly adopts the Pidgeon method, calcined dolomite is added into a reduction tank of a reduction furnace, and is reduced into magnesium metal by a reducing agent, along with the continuous development of a magnesium smelting process, the arrangement mode of the reduction tank is gradually changed from horizontal to vertical, the vertical reduction tank has higher reduction efficiency and energy utilization rate, and compared with the horizontal reduction tank, the reduction furnace provided with the vertical reduction tank is the vertical reduction furnace.
However, the vertical reduction tank is limited by the process and the component structure, the raw material filling process is required to be subjected to a series of operations of uncapping, putting in a central tube cover plate, feeding, taking out the central tube cover plate and closing the cover, at present, raw material feeding is all manual operation feeding, 4-5 workers are required to pour raw materials at the inlet of the reduction tank through a crown block conveying hopper for each feeding, air in the reduction tank is extruded in the feeding process, a large amount of dust in the reduction tank is brought out, the dust pollution is extremely serious, the reduction furnace does not stop heating in the feeding process, the radiation temperature near the inlet of the reduction tank is higher, and the working environment of the workers is extremely bad. Along with the increasing demand of magnesium metal in the market, the specification of the reduction furnace is also increasing, and the traditional manual operation is difficult to meet the capacity demand, so that the mechanization and automation requirements of the feeding operation of the magnesium smelting vertical reduction furnace are urgent.
Disclosure of Invention
In view of the above-mentioned shortcomings and disadvantages of the prior art, the invention provides an automatic feeding device for raw materials of a magnesium smelting vertical reduction furnace, which realizes mechanization and automation of feeding operation of a reduction tank by arranging a feeding device comprising a feeding group, a valve core and the like, improves the field environment, reduces the operation demands of workers and improves the production efficiency.
In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:
An automatic raw material feeding device of a magnesium smelting vertical reduction furnace comprises a feeding group, a feeding displacement mechanism, a valve core, a valve lifting mechanism and a telescopic hose;
The feeding group comprises a plurality of feeding hoppers, the feeding displacement mechanism is used for moving the feeding group to the position, above a reduction tank to be fed, of the feeding hoppers, the bottom end of each feeding hopper is connected with one end of a telescopic hose, the other end of each telescopic hose is provided with a positioning flange, the valve lifting mechanism is connected with a valve core, the valve lifting mechanism is used for driving the valve core to axially lift along the telescopic hose, the valve core is conical with a downward large end, the maximum diameter of the valve core is larger than the diameter of a central pipe and smaller than the inner diameter of the reduction tank, the inner diameter of the positioning flange is smaller than the maximum diameter of the valve core, and the outer diameter of the positioning flange is larger than the inner diameter of the reduction tank;
The valve lifting mechanism drives the valve core to descend during charging, the telescopic hose is unfolded to be in butt joint with the locating flange and the tank opening of the reduction tank along with the descending of the valve core, the valve core descends to cover the pipe opening of the central pipe, and the valve lifting mechanism drives the valve core to ascend when charging is stopped, and the valve core supports the locating flange to be contracted.
The mechanical and automatic feeding operation of the reduction tank is realized by arranging the feeding device comprising the feeding group, the valve core and the like, the operation requirement of workers during production of the reduction furnace is reduced, the working time of the workers in a high-temperature environment is shortened, and the production efficiency can be greatly improved by continuous automatic operation so as to meet the requirement of large-scale magnesium smelting production. In addition, in the feeding process, the telescopic hose is in butt joint with the tank opening of the reduction tank, so that dust dissipation in the feeding process is greatly reduced, and the field environment is improved.
Further, the feeding displacement mechanism comprises a main beam frame, the main beam frame is connected with two ends of the width direction of the reduction furnace, a first driving device is arranged on the main beam frame and used for driving the main beam frame to move along the length direction of the reduction furnace, the feeding group is connected with the main beam frame in a sliding manner, a second driving device is arranged on the feeding group, and the second driving device is used for driving the feeding group to move along the width direction of the reduction furnace.
Through setting up reinforced displacement mechanism, realized that reinforced group has the degree of freedom of two directions, be applicable to the reducing tank reinforced scene that multirow multiseriate was arranged, improved unloading efficiency.
Further, a first track is arranged at the top end of the side wall of the reduction furnace along the width direction, a first wheel set is arranged at the lower end of the main beam frame and matched with the first track, a second track is arranged at the top end of the main beam frame, a second wheel set is arranged on the side of the feeding group, and the second wheel set is matched with the second track.
Through setting up matched wheelset and track, make reinforced group can stable displacement.
Further, one end of the reducing furnace along the length direction is provided with a material taking area, and when the material adding group needs to supplement raw materials or the reducing furnace material adding is completed, the material adding group moves to the material taking area.
Further, the tank opening of the reduction tank is provided with a butt flange, the butt flange is provided with a groove, the edge of the bottom of the positioning flange is provided with a bulge, and the butt flange is embedded with the positioning flange during discharging.
Through setting up the butt joint flange and the locating flange of gomphosis during the unloading, realized the spacing to flexible hose during the unloading, vibrations when having avoided the unloading lead to flexible hose probably to produce the problem of slight aversion to the gomphosis makes the butt joint inseparabler, has reduced the dust loss during the feeding.
Further, the charging displacement mechanism and the valve lifting mechanism are connected to a reducing furnace control system.
By connecting the feeding displacement mechanism and the valve lifting mechanism to the reducing furnace control system, the automation level of the feeding device is improved, and more efficient automatic feeding is realized.
Further, a cover plate is arranged at the top of the charging hopper. By arranging the cover plate on the charging hopper, the dust dissipation at the top end of the charging hopper is reduced.
Further, the flexible hose is made of high-temperature-resistant flexible materials.
Further, the valve lifting mechanism is arranged in the center of the inside of the charging hopper.
Further, the charging group has 3 charging hoppers, and the 3 charging hoppers are aligned in a row in the width direction of the reduction furnace. Through setting up 3 loading hoppers of a row, be fit for current reduction furnace of 6 reduction jars of a row, remove once and accomplish the feeding of a row of reduction jar.
The beneficial effects of the invention are as follows:
According to the automatic feeding device for the raw materials of the vertical magnesium smelting reduction furnace, disclosed by the invention, the mechanization and automation of the feeding operation of the reduction tank are realized by arranging the feeding device comprising the feeding group, the valve core and the like, the operation requirement of workers during the production of the reduction furnace is reduced, the working time of the workers in a high-temperature environment is shortened, and the production efficiency can be greatly improved by continuous automatic operation so as to meet the requirement of large-scale magnesium smelting production. In the charging process, the telescopic hose is in butt joint with the tank opening of the reduction tank, so that dust dissipation in the charging process is greatly reduced, and the field environment is improved. The feeding displacement mechanism realizes the freedom degree of the feeding group in two directions, is suitable for a reducing tank feeding scene with a plurality of rows and a plurality of columns, and improves the discharging efficiency.
Drawings
FIG. 1 is a schematic diagram of a device for automatically feeding raw materials of a vertical magnesium smelting reduction furnace;
FIG. 2 is a front view of an automatic raw material feeding device of a magnesium smelting vertical reduction furnace;
FIG. 3 is a sectional view of an automatic raw material feeding device of a magnesium smelting vertical reduction furnace according to the present invention;
FIG. 4 is a schematic view of the bottom of the pre-charge hopper of the present invention;
FIG. 5 is a schematic illustration of the connection of the hopper to the reduction pot during charging in accordance with the present invention;
FIG. 6 is a schematic view showing the position of the present invention in a reduction furnace plant.
The device comprises a main beam frame 1, a feeding group 2, a cover plate 3, a valve lifting mechanism 4, a telescopic hose 5, a positioning flange 6, a valve core 7, a first driving device 8, a second driving device 9, a first rail 10, a first rail 11, a second rail 12, a first wheel group 13, a second wheel group 14, a feeding hopper 15, a central pipe 16, a reduction tank 17, a butt joint flange 18, a material taking area 19 and a reduction furnace.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings. Wherein references herein to terms such as "upper" and "lower" refer to the orientation of fig. 2.
While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
1-6, An automatic raw material feeding device of a magnesium smelting vertical reduction furnace comprises a feeding group 2, a feeding displacement mechanism, a valve core 7, a valve lifting mechanism 4 and a telescopic hose 5;
The charging group 2 comprises a plurality of charging hoppers 14, the charging displacement mechanism is used for moving the charging group 2 to the position, above a reducing tank 16 to be charged, of the charging hoppers 14, the bottom end of each charging hopper 14 is connected with one end of a telescopic hose 5, a positioning flange 6 is arranged at the other end of the telescopic hose 5, the valve lifting mechanism 4 is connected with a valve core 7, the valve lifting mechanism 4 is used for driving the valve core 7 to lift axially along the telescopic hose 5, the valve core 7 is conical with a large end downwards, the maximum diameter of the valve core 7 is larger than the diameter of a central tube 15 and smaller than the inner diameter of the reducing tank 16, the inner diameter of the positioning flange 6 is smaller than the maximum diameter of the valve core 7, and the outer diameter of the positioning flange 6 is larger than the inner diameter of the reducing tank 16;
The valve lifting mechanism 4 drives the valve core 7 to descend during charging, the telescopic hose 5 is unfolded to be in butt joint with the tank opening of the reduction tank 16 along with the descending of the valve core 7, the valve core 7 descends to cover the pipe opening of the central pipe 15, and the valve lifting mechanism 4 drives the valve core 7 to ascend when charging is stopped, and the valve core 7 supports the positioning flange 6 to retract to the telescopic hose 5.
The mechanical and automatic feeding operation of the reduction tank 16 is realized by arranging the feeding device comprising the feeding group 2, the valve core 7 and the like, the operation requirement of workers during production of the reduction furnace 19 is reduced, the working time of the workers in a high-temperature environment is shortened, and the production efficiency can be greatly improved by continuous automatic operation so as to meet the requirement of large-scale magnesium smelting production. In addition, in the feeding process, the telescopic hose 5 is in butt joint with the tank opening of the reduction tank 16, so that dust dissipation in the feeding process is greatly reduced, and the field environment is improved.
Specifically, the feeding displacement mechanism comprises a main beam frame 1, the main beam frame 1 is connected with two ends of the width direction of a reduction furnace 19, the main beam frame 1 is provided with a first driving device 8, the first driving device 8 is used for driving the main beam frame 1 to move along the length direction of the reduction furnace 19, a feeding group 2 is connected with the main beam frame 1 in a sliding manner, a feeding group 2 is provided with a second driving device 9, and the second driving device 9 is used for driving the feeding group 2 to move along the width direction of the reduction furnace 19.
Through setting up reinforced displacement mechanism, realized that reinforced group 2 has the degree of freedom of two directions, be applicable to the reduction jar 16 reinforced scene that multirow multiseriate was arranged, improved unloading efficiency.
Specifically, a first rail 10 is arranged at the top end of the side wall of the reduction furnace 19 along the width direction, a first wheel set 12 is arranged at the lower end of the main beam frame 1, the first wheel set 12 is matched with the first rail 10, a second rail 11 is arranged at the top end of the main beam frame 1, a second wheel set 13 is arranged at the side of the feeding group 2, and the second wheel set 13 is matched with the second rail 11.
Through setting up matched wheelset and track, make reinforced group 2 can stable displacement.
The first rail 10 and the second rail 11 may be a rail, a rail track, or the like for directional movement.
Specifically, one end of the reducing furnace 19 along the length direction is provided with a material taking area 18, and when the material adding group 2 needs to supplement the raw materials or the material adding of the reducing furnace 19 is completed, the material adding group 2 moves to the material taking area 18.
Specifically, the tank opening of the reduction tank 16 is provided with a butt flange 17, the butt flange 17 is provided with a groove, the bottom edge of the positioning flange 6 is provided with a bulge, and the butt flange 17 is embedded with the positioning flange 6 during discharging.
Through setting up the butt flange 17 and the locating flange 6 of gomphosis during unloading, realized the spacing to flexible hose 5 during unloading, avoided vibrations during unloading to lead to flexible hose 5 to produce the problem that slightly shifts probably to the gomphosis makes the butt joint inseparabler, has reduced the dust loss during feeding.
Specifically, the feeding displacement mechanism and the valve lifting mechanism 4 are connected to a reducing furnace 19 control system.
By switching the feeding displacement mechanism and the valve lifting mechanism 4 into the control system of the reduction furnace 19, the automation level of the feeding device is improved, and more efficient automatic feeding is realized.
The specific method for connecting the feeding displacement mechanism and the valve lifting mechanism 4 to the control system of the reducing furnace 19 is a conventional method that can be implemented by a person skilled in the art according to the requirement in combination with the prior art, and will not be described herein.
Specifically, a cover plate 3 is arranged at the top of the hopper 14. By providing the hopper 14 with the cover plate 3, dust escaping from the top end of the hopper 14 is reduced.
Specifically, the flexible hose 5 is made of a flexible material with high temperature resistance.
The flexible hose 5 is shown in a telescoping form including, but not limited to, a canvas hose, a bellows hose, a telescoping sleeve, and the like.
Specifically, the valve lifting mechanism 4 is arranged at the center of the inside of the hopper 14.
The valve lifting mechanism 4 includes, but is not limited to, a worm gear mechanism, a rack and pinion mechanism, a cylinder and hydraulic cylinder mechanism, and the like, which can realize lifting function.
Specifically, the charging group 2 has 3 hoppers 14, and the 3 hoppers 14 are aligned in a row in the width direction of the reduction furnace 19. By providing a row of 3 hoppers 14, the charging of the row of reduction tanks 16 can be completed by moving the reduction furnace 19 adapted to the existing row of 6 reduction tanks 16 once.
The working process of the invention is as follows:
The charging group 2 obtains enough raw materials in the material taking area 18, the cover plate 3 is closed, the charging displacement mechanism moves the charging group 2 to the position above the reduction tank 16 to be charged, the valve lifting mechanism 4 drives the valve core 7 to descend, the telescopic hose 5 descends and expands along with the valve core 7 due to the gravity action of the raw materials in the charging hopper 14 until the positioning flange 6 is in butt joint with the tank opening of the reduction tank 16, the valve core 7 descends to cover the pipe opening of the central pipe 15, at the moment, a gap is formed between the conical surface of the valve core 7 and the inner wall of the reduction tank 16, and the raw materials flow downwards into the reduction tank 16 along the conical surface through the gap.
After the charging is completed, the valve lifting mechanism 4 drives the valve core 7 to ascend, the valve core 7 supports the positioning flange 6, the valve core 7 plays a role in sealing the telescopic hose 5, the valve core 7 ascends to the telescopic hose 5 to shrink, and the charging displacement mechanism moves the charging group 2 to the position above a reduction tank 16 to be charged at the next part.
The continuous operation is carried out until the raw materials in the charging hopper 14 are used up or the charging of the reducing furnace 19 is completed, and the charging displacement mechanism moves the charging group 2 to the material taking area 18 to supplement the raw materials, and the next round of charging is waited.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.