CN215250992U - Return iron adding device for closed electric furnace - Google Patents
Return iron adding device for closed electric furnace Download PDFInfo
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- CN215250992U CN215250992U CN202121297612.3U CN202121297612U CN215250992U CN 215250992 U CN215250992 U CN 215250992U CN 202121297612 U CN202121297612 U CN 202121297612U CN 215250992 U CN215250992 U CN 215250992U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides an airtight electric stove is with adding back stove iron device, include: the dustproof processing unit is arranged at the upper end of the sealing processing unit and comprises a dustproof mechanism and/or an upper cavity, and the dustproof mechanism is arranged at the feeding end of the upper cavity; sealed processing unit includes cavity, sealing mechanism and hazardous gas processing module down, sealing mechanism sets up the feed end and the discharge end of cavity down, hazardous gas processing module with the inside of cavity links to each other down, the utility model discloses mainly utilize the multi-chamber reinforced cooperation hazardous gas return pipeline in turn to play the effect of solving the potential safety hazard problem of the iron return in-process of returning to the furnace.
Description
Technical Field
The utility model relates to an ferroalloy smelting equipment technical field particularly, especially relates to an airtight electric stove is with adding back stove iron device.
Background
When tapping in front of a smelting plant furnace, no matter a ladle or a long-distance chute or a pig casting machine scheme is adopted, residual iron at the bottom of the ladle and on two sides of the pig casting machine is remained in the chute in the flowing, transferring and solidifying processes of molten iron, and the molten iron is thoroughly called as crude iron. These unshaped roughcast irons contain impurities such as sand grains, so that the selling price is very low in the market, and many smeltery owners strongly require that the roughcast irons are coarsely crushed to the grain size of below 300mm to be used as return irons for returning, and are melted by the furnace temperature for recasting and molding.
In the past, a large number of furnaces are opened or semi-closed in China, the mode of discharging the rough iron is also the mode of returning, the method is to open the furnace door of the electric furnace cover, workers adopt tools such as shovels or shovels to shovel the rough iron into the furnace, and the operation mode belongs to the operation of manually closing to the electric furnace. There are the following problems:
1. the quantity of crude iron in the electric furnace is close to 10t per day, the furnace is fully returned manually, the operation time is long, and the labor intensity of workers is high;
2. close to the electric furnace operation, once the incompletely combusted CO overflows in the furnace, the potential explosion hazard is caused, and the danger is high;
3. the worker operation layer is generally arranged on the second layer of the electric furnace factory building, namely a furnace cover layer, the dust generated by manually shoveling the hair iron is large, the second layer of environment is seriously polluted, and the harm to the body of workers is large; meanwhile, the iron-containing dust has certain influence on the insulation of each component of the electric furnace body;
4. in order to facilitate the operation, the furnace door needs to be enlarged, the original air distribution balance of combustion in the electric furnace is changed, the heat energy value and the heat distribution in the furnace are influenced, and the influence is generated on the subsequent preheating utilization link;
5. the operation depends on the working condition of an open or semi-closed electric furnace, cannot be applied to a closed furnace, and has limitation and lagging. The sealed electric furnace is in high-temperature reducing atmosphere, contains 50-80% of CO, belongs to a coal gas environment, and the coal gas can be guided to a combustion furnace or a sintering kiln and other equipment after being purified so as to achieve the purpose of recycling. Because the furnace is filled with coal gas, the mode of directly returning the crude iron by opening the furnace door can cause great potential safety hazards such as coal gas leakage poisoning, coal gas combustion explosion and the like, and simultaneously, the coal gas components in the furnace are changed to influence the recycling of the coal gas.
At present, due to the requirements of environmental protection and industrial policy, the country does not allow the construction of non-sealed electric furnace projects, and in recent years, all non-sealed furnaces must be changed into sealed furnaces and then stopped.
Therefore, under the form of electric furnace sealing, a new method for processing the recycled iron is needed, the equipment level of the submerged arc furnace is improved, and the utility model discloses a reasonable, sealed effectual, do not influence the furnace condition, improve the operation environment, reduce workman intensity of labour's add the recycled iron device is the main subject of sealed electric furnace equipment.
Therefore, a device for adding and returning iron for the closed electric furnace is needed to be designed.
SUMMERY OF THE UTILITY MODEL
According to the technical problem that the safety hidden trouble of harmful gas leakage or explosion exists in the open furnace of the furnace returning operation relying on full manual operation, the returned iron adding device for the closed electric furnace is provided. The utility model discloses mainly utilize the reinforced cooperation hazardous gas return pipe way in turn of multi-chamber to play the effect of the potential safety hazard problem of solving the iron return in-process of melting.
The utility model discloses a technical means as follows:
the utility model provides a sealed electric stove is with adding back stove iron device which characterized in that includes: the dustproof processing unit is arranged at the upper end of the sealing processing unit and comprises a dustproof mechanism and/or an upper cavity, and the dustproof mechanism is arranged at the feeding end of the upper cavity; the sealing treatment unit comprises a lower cavity, a sealing mechanism and a hazardous gas treatment module, wherein the sealing mechanism is arranged at the feed end and the discharge end of the lower cavity, and the hazardous gas treatment module is connected with the interior of the lower cavity.
Further, the number of the dustproof processing units is one or more, and when the number of the dustproof processing units is one, the dustproof processing units are directly connected to the upper end of the sealing processing unit; when the quantity of dustproof processing unit is more than one, it is a plurality of establish ties each other between the dustproof processing unit, it is a plurality of the composite module that dustproof processing unit constitutes sets up sealed processing unit's upper end.
Furthermore, the dustproof mechanism is a receiving hopper dustproof mechanism and/or a sealing valve dustproof mechanism, the receiving hopper dustproof mechanism comprises a single receiving hopper structure or a receiving hopper structure with a dustproof plate, and the sealing dustproof mechanism is a sealing valve I.
Further, single hopper structure is hopper I, take dust guard hopper structure to include hopper II, pivot, connection loop bar, counterweight rod and turn over the board, hopper II sets up go up the feed end of cavity, connect the loop bar with turn over fixed connection between the board, connect the loop bar with turn over the board and pass through the pivot sets up the bottom of hopper II, the pivot sets up connect the loop bar with the junction of turning over the board, the counterweight rod sets up the end of connecting the loop bar.
Further, sealing mechanism includes sealing valve II and sealing valve III, sealing valve II sets up the feed end of cavity down, sealing valve III sets up the discharge end of cavity down.
Further, the hazardous gas treatment module comprises an inert gas blowing-in pipeline, a hazardous gas detection pipeline and a hazardous gas return pipeline, wherein the gas outlet end of the inert gas blowing-in pipeline is connected with the inner cavity of the lower cavity, the gas inlet end of the hazardous gas detection pipeline is connected with the inner cavity of the lower cavity, the gas outlet end of the hazardous gas return pipeline is connected with the inner cavity of the lower cavity, and a hazardous gas detection device is arranged on the hazardous gas detection pipeline.
Furthermore, the outer end of the cavity of the dangerous gas detection pipeline is connected with an inert gas back flushing pipeline I, and the dangerous gas detection pipeline is connected with the inert gas back flushing pipeline I through a back flushing pipeline control valve I; an inert gas back-blowing pipeline II is connected to the outer cavity section of the dangerous gas return pipeline, the inert gas back-blowing pipeline II and the dangerous gas return pipeline form a Y-shaped pipeline, and a back-blowing pipeline control valve II is arranged on the inert gas back-blowing pipeline II; the dangerous gas return pipeline is provided with a maintenance valve; and a main pipeline control valve is arranged on the inert gas pipeline.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model provides a pair of airtight electric stove is with adding back stove iron device under the prerequisite that does not influence the furnace conditions for airtight electric stove function is further perfect, has solved an industry difficult problem.
2. The utility model provides a returning iron adding device for a closed electric furnace, the furnace gas does not contact with the atmosphere in the whole returning process, and the heat loss is less; meanwhile, the furnace condition and the coal gas concentration/heat value and the recycling of the coal gas are not influenced.
3. The utility model provides a pair of airtight electric stove is with adding back stove iron device need not artifical reinforced, reduces workman intensity of labour and danger, and degree of automation is high.
Based on the reason, the utility model can be widely popularized in the fields of ferroalloy smelting equipment technology and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram i of the device for adding the returning iron for the sealed electric furnace of the present invention.
Fig. 2 is a schematic view of a dustproof processing unit of the device for adding the returning iron for the sealed electric furnace.
Fig. 3 is a schematic view of a sealing processing unit of the device for adding the returning iron for the sealed electric furnace.
FIG. 4 is a schematic diagram showing the change of the returned iron medium of the returned iron adding device for the sealed electric furnace.
Fig. 5 is a schematic diagram ii of the device for adding recycled iron for the sealed electric furnace of the present invention.
Fig. 6 is a schematic diagram iii of the device for adding recycled iron for the sealed electric furnace of the present invention.
FIG. 7 is a schematic diagram IV of a device for adding recycled iron for an airtight electric furnace.
Fig. 8 is a schematic diagram v of the device for adding the returning iron for the sealed electric furnace of the present invention.
Fig. 9 is a schematic view vi of the device for adding recycled iron for the sealed electric furnace of the present invention.
Fig. 10 is a schematic diagram vii of a returning iron adding device for an airtight electric furnace according to the present invention.
In the figure: 1. a dust-proof processing unit; 11. a receiving hopper II; 12. a rotating shaft; 13. connecting the loop bar; 14. a weight lever; 15. turning over a plate; 16. an upper cavity; 17. sealing the valve I; 18. a receiving hopper I; 2. a sealing processing unit; 21. sealing the valve II; 22. sealing a valve III; 23. a lower cavity; 24. blowing inert gas into the pipeline; 241. a main pipeline control valve; 25. a hazardous gas detection line; 251. a blowback pipeline control valve I; 26. a hazardous gas detection device; 27. an inert gas back flushing pipeline II; 271. a back flushing pipeline control valve II; 28. a dangerous gas return pipeline; 281. and (6) overhauling the valve.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1-10, the utility model provides a closed electric furnace is with adding back iron device, include: the device comprises a dustproof processing unit 1 and a sealing processing unit 2, wherein the dustproof processing unit 1 is arranged at the upper end of the sealing processing unit 2, the dustproof processing unit 1 comprises a dustproof mechanism and/or an upper cavity 16, and the dustproof mechanism is arranged at the feed end of the upper cavity 16; the sealing treatment unit 2 comprises a lower cavity 23, a sealing mechanism and a hazardous gas treatment module, wherein the sealing mechanism is arranged at the feed end and the discharge end of the lower cavity 23, and the hazardous gas treatment module is connected with the interior of the lower cavity 23; the number of the dustproof processing units 1 is one or more, and when the number of the dustproof processing units 1 is one, the dustproof processing units 1 are directly connected to the upper end of the sealing processing unit 2; when the number of the dustproof processing units 1 is more than one, the dustproof processing units 1 are connected in series, and a combined module consisting of the dustproof processing units 1 is arranged at the upper end of the sealing processing unit 2; the dustproof mechanism is a receiving hopper dustproof mechanism and/or a sealing valve dustproof mechanism, the receiving hopper dustproof mechanism comprises a single receiving hopper structure or a receiving hopper structure with a dustproof plate, and the sealing dustproof mechanism is a sealing valve I17; the single receiving hopper structure is a receiving hopper I18, the receiving hopper structure with the dust guard plate comprises a receiving hopper II 11, a rotating shaft 12, a connecting sleeve rod 13, a balance weight rod 14 and a turning plate 15, the receiving hopper II 11 is arranged at the feeding end of the upper cavity 16, the connecting sleeve rod 13 is fixedly connected with the turning plate 15, the connecting sleeve rod 13 and the turning plate 15 are arranged at the bottom of the receiving hopper II 11 through the rotating shaft 12, the rotating shaft 12 is arranged at the joint of the connecting sleeve rod 13 and the turning plate 15, and the balance weight rod 14 is arranged at the tail end of the connecting sleeve rod 13; the sealing mechanism comprises a sealing valve II 21 and a sealing valve III 22, the sealing valve II 21 is arranged at the feeding end of the lower cavity 23, and the sealing valve III 22 is arranged at the discharging end of the lower cavity 23; the hazardous gas treatment module comprises an inert gas blowing pipeline 24, a hazardous gas detection pipeline 25 and a hazardous gas return pipeline 28, wherein the gas outlet end of the inert gas blowing pipeline 24 is connected with the inner cavity of the lower cavity 23, the gas inlet end of the hazardous gas detection pipeline 25 is connected with the inner cavity of the lower cavity 23, the gas outlet end of the hazardous gas return pipeline 28 is connected with the inner cavity of the lower cavity 23, and a hazardous gas detection device 26 is arranged on the hazardous gas detection pipeline 25; the outer end of the cavity of the dangerous gas detection pipeline 25 is connected with an inert gas back flushing pipeline I, and the dangerous gas detection pipeline 25 is connected with the inert gas back flushing pipeline I through a back flushing pipeline control valve I251; an inert gas back-blowing pipeline II 27 is connected to the outer cavity section of the dangerous gas return pipeline 28, the inert gas back-blowing pipeline II 27 and the dangerous gas return pipeline 28 form a Y-shaped pipeline, and a back-blowing pipeline control valve II 271 is arranged on the inert gas back-blowing pipeline II 27; a maintenance valve 281 is arranged on the dangerous gas return pipeline 28; and a main pipeline control valve 241 is arranged on the inert gas pipeline.
Example 1
As shown in figure 1, the device is positioned above the cover of an electric furnace and mainly comprises the following parts: a dust-proof processing unit 1 and a sealing processing unit 2, as shown in fig. 2, the dust-proof processing unit 1 is mainly composed of the following parts: the receiving hopper II 11, the rotating shaft 12, the connecting sleeve rod 13, the counterweight rod 14, the turning plate 15 and the upper cavity 16 form a receiving space for receiving the returning iron, wherein the receiving hopper II 11 and the upper cavity 16 form a structural integrated piece; the connecting sleeve rod 13 and the turning plate 15 are integrated into a fixed-angle structure, the turning plate 15 is positioned at the bottom of the receiving hopper II 11, so that the upper cavity 16 forms a sealing structure, the rotating shaft 12 is distributed on the side of the receiving hopper II 11 and is a rotating pair of the connecting sleeve rod 13 and the turning plate 15, and the counterweight rod 14 is arranged at the tail end of the connecting sleeve rod 13 and plays a role in automatically closing the turning plate 15;
as shown in fig. 3, the sealing treatment unit 2 is mainly composed of the following parts: a sealing valve II 21, a sealing valve III 23, a main pipeline control valve 241, a back-blowing pipeline control valve I251, a dangerous gas detection device 26, a back-blowing pipeline control valve II 271, an overhaul valve 281 and a lower cavity 23, the hazardous gas detection device 26 is a hazardous gas detection instrument, a sealing valve II 21 and a sealing valve III 23 are arranged up and down, a lower cavity 23 is arranged in the middle, a sealed space is formed together, a plurality of connecting pipes are distributed on the middle upper part of the outer wall of the lower cavity 23, an inert gas blowing pipeline 24, an inert gas back-blowing pipeline I and a hazardous gas return pipeline 28 are connected with the connecting pipes, a main pipeline control valve 241 is arranged on the inert gas blowing pipeline 24, a back-blowing pipeline control valve I251 is arranged on the inert gas back-blowing pipeline I, an inert gas back-blowing pipeline II 27 and an overhaul valve 281 are arranged on the hazardous gas return pipeline 28, and a back-blowing pipeline control valve II 271 is arranged on the inert gas back-blowing pipeline II;
the returned iron feeding device is arranged above a furnace cover of the closed electric furnace, the returned iron is treated according to a certain granularity, batch feeding can be carried out through a hoisting mode of an electric hoist and a hopper, as shown in figure 2, the returned iron falls to the turning plate 15 under the guiding action of the receiving hopper II 11 and overcomes the weight of the weight rod 14 by using gravity to open the turning plate 15, the length and the weight of the weight rod 14 are adjusted according to the weight of the returned iron of each batch, the turning plate 15 is opened by rotating around the rotating shaft 12, the returned iron of one batch falls to the upper cavity 16 through the receiving hopper II 11, the turning plate 15 returns to the original position due to the action of the weight rod 14, the upper cavity 16 is sealed, the phenomenon that the fed raised dust overflows from the receiving hopper II 11 is avoided, as shown in figure 3, after the sealing valve II 21 is opened, the returned iron falls into the lower cavity 23 and then closes the upper sealing valve II 21, the returned iron exists in a closed space, opening a sealing valve III 23, closing after the returning iron enters a hearth, closing a lower cavity 23 at the moment, wherein a large amount of coal gas is sealed in the lower cavity 23, a dangerous gas detection instrument participates in detection, the dangerous gas exceeds dangerous concentration, starting a main pipeline control valve 241, filling inert gas into the lower cavity, generally adopting nitrogen, and discharging the coal gas sealed in the lower cavity 23 into an electric furnace hearth through a pipeline due to the replacement of the inert gas, so that the coal gas circulates between the lower cavity 23 and the electric furnace hearth to prevent potential safety hazards caused by discharging, closing the main pipeline control valve 241 when the dangerous gas detection instrument (detecting the dangerous gas concentration meets the safety requirement), which is a returning iron circulation, generally 4-5 circulations a day, and a back-blowing pipeline control valve I251 and a back-blowing pipeline control valve II 271 on the pipeline are used for clearing the instrument and the pipeline;
as shown in fig. 4, the process chart of the change of the medium of the upper and lower cavities in the charging of the recycled iron and the charging process are shown, wherein the upper cavity is the recycled iron and the air, the lower cavity is the inert gas, and the electric furnace is the coal gas; in the material sealing process, the upper cavity is air, the lower cavity is recycled iron and inert gas, and the electric furnace is internally filled with coal gas; in the discharging process, the upper cavity is air, the lower cavity is inert gas, and the returned iron and coal gas are in the electric furnace; this process is accompanied by a cyclical change in the addition of the returning iron.
The counter weight turns over the board and has solved the raise dust in whole in-process, and bivalve is sealed in turn realizes that sealed environment adds back iron, inert gas protection makes the gas circulation back iron not excessive, and the reliable degree of automation of equipment is high moreover, so the device has solved the airtight furnace and can't add the difficult problem of trade of back iron, improves workman's operational environment and intensity of labour simultaneously.
Example 2
As shown in fig. 5, the dust-proof processing unit 1 is composed of a receiving hopper i 18, and the sealing processing unit 2 is mainly composed of the following parts: a sealing valve II 21, a sealing valve III 23, a main pipeline control valve 241, a back-blowing pipeline control valve I251, a dangerous gas detection device 26, a back-blowing pipeline control valve II 271, an overhaul valve 281 and a lower cavity 23, wherein the dangerous gas detection device 26 is a dangerous gas detection instrument, the sealing valve II 21 and the sealing valve III 23 are arranged up and down, the middle part is the lower cavity 23, a closed space is formed together, a plurality of connecting pipes are distributed at the middle upper part of the outer wall of the lower cavity 23, an inert gas blowing pipeline 24, an inert gas back-blowing pipeline I and a dangerous gas return pipeline 28 are connected with the connecting pipes, the inert gas blowing pipeline 24 is provided with the main pipeline control valve 241, the inert gas back-blowing pipeline I is provided with the back-blowing pipeline control valve I251, the dangerous gas return pipeline 28 is provided with an inert gas back-blowing pipeline II 27 and the overhaul valve 281, the inert gas back-blowing pipeline II is provided with the back-blowing pipeline control valve II 271, the receiving hopper I18 is directly arranged above the sealing valve II 21; the tempering iron is well treated according to certain granularity during the material loading, and accessible electric block + the hoist and mount mode of hopper directly adds the tempering iron into hopper I18, and after the tempering iron all got into hopper I18, the back was opened to sealing valve II 21 and waits that the tempering iron falls into lower cavity 23 and closes sealing valve II 21 again.
Example 3
As shown in figure 6, the lower cavity 23 is an inclined material pouring pipeline, and the hazardous gas treatment module is arranged at the upper end of the lower cavity, so that the state of the hazardous gas near the sealing valve II 21 can be effectively detected, and the hazardous gas is prevented from leaking to cause serious safety accidents.
Example 4
As shown in fig. 7, the dustproof processing unit 1 is composed of a receiving hopper i 18, an upper cavity 16 and a sealing valve i 17, wherein the receiving hopper i 18 is arranged at the upper end of the sealing valve i 17, and the lower end of the sealing valve i 17 is connected with the upper cavity 16;
handling the iron of melting back according to certain granularity during the material loading, the hoist and mount mode of accessible electric block + hopper is direct to add the iron of melting back into hopper I18, and after the iron of melting back all got into hopper I18, sealing valve I17 opened, makes the iron of melting back get into cavity 16, and in the cavity 16 was gone into to the iron of melting back is whole, sealing valve I17 closed, later sealing valve II 21 opened and waits that the iron of melting back falls into cavity 23 and recloses last sealing valve II 21 down.
Example 5
As shown in fig. 8, two sets of dustproof processing units 1 are connected in series, the first set of dustproof processing unit 1 is composed of a receiving hopper i 18 and an upper cavity 16, the second set of dustproof processing unit 1 is composed of an upper cavity 16 and a sealing valve i 17, the first set of dustproof processing unit 1 is arranged at the upper end of the second set of dustproof processing unit 1, the receiving hopper i 18 in the first set of dustproof processing unit 1 is arranged at the upper end of the sealing valve i 17, and the lower end of the sealing valve i 17 is connected with the upper cavity 16; a sealing valve I17 in the second group of dustproof processing units 1 is arranged at the upper end of the upper cavity 16;
handling the returning iron according to certain granularity during the material loading, the hoist and mount mode of accessible electric block + hopper is direct to add the returning iron in first group dustproof processing unit 1's receiving hopper I18, after the returning iron all got into receiving hopper I18, first group dustproof processing unit 1's sealing valve I17 was opened, make the returning iron get into first group dustproof processing unit 1's last cavity 16, in the returning iron all got into last cavity 16, sealing valve I17 closed, later the second group dustproof processing unit 1's sealing valve I17 was opened and is made the returning iron get into the second group dustproof processing unit 1's last cavity 16, in the returning iron all got into last cavity 16, sealing valve I17 closed, sealing valve II 21 opened and waits that the returning iron falls into lower cavity 23 and closes upper sealing valve II 21 again.
Example 6
As shown in fig. 9, two groups of the same dustproof processing units 1 are connected in series, each dustproof processing unit 1 is composed of a receiving hopper ii 11, a rotating shaft 12, a connecting sleeve rod 13, a balance weight rod 14, a turning plate 15 and an upper cavity 16, and the receiving hopper ii 11 and the upper cavity 16 are structurally integrated to form a receiving space for receiving returned iron; the connecting sleeve rod 13 and the turning plate 15 are integrated into a fixed-angle structure, the turning plate 15 is positioned at the bottom of the receiving hopper II 11, so that the upper cavity 16 forms a sealing structure, the rotating shaft 12 is distributed on the side of the receiving hopper II 11 and is a rotating pair of the connecting sleeve rod 13 and the turning plate 15, and the counterweight rod 14 is arranged at the tail end of the connecting sleeve rod 13 and plays a role in automatically closing the turning plate 15;
the returned iron is treated according to certain granularity during the material, the direct returned iron that will be added of hoist and mount mode of accessible electric block + hopper, the returned iron is through the guide effect of receiving hopper II 11, fall to turning over board 15 and overcome counter weight lever 14 weight with turning over board 15 and open, the last returned iron falls into the lower cavity 16 that is located the bottom completely, two-layer turning over board 15 is because counter weight lever 14's effect self-closing, sealed valve II 21 opens this moment and waits that the returned iron falls into lower cavity 23 and closes sealed valve II 21 again.
Example 7
As shown in fig. 10, the dustproof processing unit 1 comprises an upper cavity 16 and two sets of sealing valves i 17, wherein the upper cavity 16 is a T-shaped pipeline, and the two sets of sealing valves i 17 are respectively arranged at two openings at the upper end of the upper cavity 16;
the method comprises the following steps that returned iron is well treated according to a certain particle size during feeding, two groups of sealing valves I17 are opened, the returned iron can be directly added into an upper cavity 16 in a manual mode or a tipping trolley mode, after the returned iron is completely added into the upper cavity 16, the two groups of sealing valves I17 are closed, then a sealing valve II 21 is opened, the returned iron falls into a lower cavity 23, and then the upper sealing valve II 21 is closed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. The utility model provides a sealed electric stove is with adding back stove iron device which characterized in that includes: the dustproof processing unit is arranged at the upper end of the sealing processing unit and comprises a dustproof mechanism and/or an upper cavity, and the dustproof mechanism is arranged at the feeding end of the upper cavity; the sealing treatment unit comprises a lower cavity, a sealing mechanism and a hazardous gas treatment module, wherein the sealing mechanism is arranged at the feed end and the discharge end of the lower cavity, and the hazardous gas treatment module is connected with the interior of the lower cavity.
2. The charging and returning iron device for the sealed electric furnace according to claim 1, wherein the number of the dustproof processing units is one or more, and when the number of the dustproof processing units is one, the dustproof processing units are directly connected to the upper end of the sealed processing unit; when the quantity of dustproof processing unit is more than one, it is a plurality of establish ties each other between the dustproof processing unit, it is a plurality of the composite module that dustproof processing unit constitutes sets up sealed processing unit's upper end.
3. The apparatus according to claim 1, wherein the dust-proof mechanism is a dust-proof mechanism of a receiving hopper and/or a dust-proof mechanism of a sealing valve, the dust-proof mechanism of the receiving hopper comprises a single receiving hopper structure or a receiving hopper structure with a dust-proof plate, and the dust-proof mechanism of the sealing valve is a sealing valve I.
4. The recycling iron device for the electric closed furnace according to claim 3, wherein the single receiving hopper structure is a receiving hopper I, the receiving hopper structure with the dust guard comprises a receiving hopper II, a rotating shaft, a connecting loop bar, a balance weight bar and a turning plate, the receiving hopper II is arranged at the feeding end of the upper cavity, the connecting loop bar is fixedly connected with the turning plate, the connecting loop bar and the turning plate are arranged at the bottom of the receiving hopper II through the rotating shaft, the rotating shaft is arranged at the joint of the connecting loop bar and the turning plate, and the balance weight bar is arranged at the tail end of the connecting loop bar.
5. The charging and returning iron device for the sealed electric furnace according to claim 1, wherein the sealing mechanism comprises a sealing valve II and a sealing valve III, the sealing valve II is arranged at the feeding end of the lower cavity, and the sealing valve III is arranged at the discharging end of the lower cavity.
6. The device for adding and returning the iron for the sealed electric furnace according to claim 1, wherein the hazardous gas treatment module comprises an inert gas blowing pipeline, a hazardous gas detection pipeline and a hazardous gas returning pipeline, the gas outlet end of the inert gas blowing pipeline is connected with the inner cavity of the lower cavity, the gas inlet end of the hazardous gas detection pipeline is connected with the inner cavity of the lower cavity, the gas outlet end of the hazardous gas returning pipeline is connected with the inner cavity of the lower cavity, and the hazardous gas detection pipeline is provided with a hazardous gas detection device.
7. The device for feeding back iron into a closed electric furnace according to claim 6, wherein the outer end of the cavity of the dangerous gas detection pipeline is connected with an inert gas back-blowing pipeline I, and the dangerous gas detection pipeline is connected with the inert gas back-blowing pipeline I through a back-blowing pipeline control valve I; an inert gas back-blowing pipeline II is connected to the outer cavity section of the dangerous gas return pipeline, the inert gas back-blowing pipeline II and the dangerous gas return pipeline form a Y-shaped pipeline, and a back-blowing pipeline control valve II is arranged on the inert gas back-blowing pipeline II; the dangerous gas return pipeline is provided with a maintenance valve; and a main pipeline control valve is arranged on the inert gas pipeline.
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| CN202121297612.3U CN215250992U (en) | 2021-06-10 | 2021-06-10 | Return iron adding device for closed electric furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113278761A (en) * | 2021-06-10 | 2021-08-20 | 大连重工机电设备成套有限公司 | Return iron adding device for closed electric furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113278761A (en) * | 2021-06-10 | 2021-08-20 | 大连重工机电设备成套有限公司 | Return iron adding device for closed electric furnace |
| CN113278761B (en) * | 2021-06-10 | 2024-05-14 | 大连重工机电设备成套有限公司 | Furnace iron adding and returning device for closed electric furnace |
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