CN210057724U - Waste gas discharge device for ladle rotary furnace - Google Patents

Waste gas discharge device for ladle rotary furnace Download PDF

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Publication number
CN210057724U
CN210057724U CN201920814541.6U CN201920814541U CN210057724U CN 210057724 U CN210057724 U CN 210057724U CN 201920814541 U CN201920814541 U CN 201920814541U CN 210057724 U CN210057724 U CN 210057724U
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China
Prior art keywords
pipe
dust
dust fall
port
intercommunication
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CN201920814541.6U
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Chinese (zh)
Inventor
聂志波
郭昌言
蒋必超
龙超群
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YICHANG HONGCHANG ELECTRONICS Co Ltd
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YICHANG HONGCHANG ELECTRONICS Co Ltd
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Abstract

The utility model provides an exhaust emission device for ladle rotary furnace, transition portion between ladle furnace feed end and calcining furnace is equipped with exhaust emission mouth, communicating pipe is three-way structure, the first port and the exhaust emission mouth intercommunication of communicating pipe, the second port is connected with the middle section or the hypomere of surge bin, the third port is connected with the air inlet of air exhauster through first extension pipe, the gas outlet of air exhauster passes through second extension pipe and dust fall case intercommunication, be equipped with the blast pipe on dust fall roof portion, the bottom and the dust fall incasement portion intercommunication of blast pipe, the top and the bottom of surge bin are equipped with first discharge pipe respectively, and the second delivery pipe. The utility model aims at further reducing the emission of the waste gas and dust of the existing rotary ladle furnace and further improving the recovery rate and the utilization rate of materials in the waste gas and dust.

Description

Waste gas discharge device for ladle rotary furnace
Technical Field
The utility model belongs to the production, manufacturing and processing equipment field of electronic components, in particular to a waste gas discharge device for a ladle rotary furnace for the production, manufacturing and processing of ferrite magnetic electronic components.
Background
When the existing ladle furnace is used for production, waste gas in the ladle furnace needs to be discharged to ensure the efficiency of continuous calcination and reaction of raw materials in the ladle furnace, and the emission of the dust and the waste gas can pollute the environment and bring certain harm to the bodies of personnel inside and outside a workshop.
In the prior art, for example, in a patent of the patent with an authorization publication number of CN105271159B and a name of a ladle rotary furnace applied by the present company, a waste gas discharge port is formed in a transition portion between a feed end of the ladle furnace and a calcining furnace, and is directly communicated with the waste gas discharge port through a pipeline, so that waste gas is discharged.
Disclosure of Invention
The utility model aims at further reducing the emission of the waste gas and dust of the existing rotary ladle furnace and further improving the recovery rate and the utilization rate of materials in the waste gas and dust.
The purpose of the utility model is realized like this:
the utility model provides an exhaust emission device for ladle rotary furnace, transition portion between ladle furnace feed end and calcining furnace is equipped with exhaust emission mouth, communicating pipe is three-way structure, the first port and the exhaust emission mouth intercommunication of communicating pipe, the second port is connected with the middle section or the hypomere of surge bin, the third port is connected with the air inlet of air exhauster through first extension pipe, the gas outlet of air exhauster passes through second extension pipe and dust fall case intercommunication, be equipped with the blast pipe on dust fall roof portion, the bottom and the dust fall incasement portion intercommunication of blast pipe, the top and the bottom in surge bin are equipped with first discharge pipe respectively, and the second delivery pipe, the below of second delivery pipe is equipped with the bearing box.
The pipe body between the first port and the second port of the communicating pipe is of a long straight pipe body structure, the pipe body and the horizontal plane are obliquely arranged at a certain included angle, and a filter screen is arranged on the pipe body and located at the third port of the communicating pipe.
Be multilayer structure from last to being down in the box of dust fall case inside, be equipped with the space bar between layer, the second extension pipe extends to dust fall incasement portion bottom with dust fall case intercommunication and this tip, is equipped with a plurality of perforation on the face of space bar, all is equipped with the drain pipe on each layer of dust fall case box and be located dust fall case lateral wall, drain pipe one end and dust fall incasement portion intercommunication, the other end are equipped with first valve.
A water inlet is arranged on the box body of the dust falling box, and a switch door is arranged at the bottom end of the dust falling box.
The first extension pipe is provided with a second valve, and the exhaust fan, the first extension pipe and the second extension pipe are detachable structures.
When the exhaust fan is inspected and/or maintained and replaced, the second valve is closed, and the exhaust fan is detached from the first extension pipe and the second extension pipe respectively to inspect, maintain and replace the exhaust fan.
The connecting portion of second calandria pipe and the bottom intercommunication of surge bin, and the free end of second calandria pipe sets up towards the case mouth that holds the case.
By adopting the technical scheme, the following technical effects can be brought:
1) the utility model can greatly reduce the discharge of material dust during the manufacturing process of ferrite magnetic electronic elements, especially when the ladle rotary furnace calcines ferrite compounds, and greatly reduce the concentration of ferrite material dust floating in and near factories;
2) the utility model discloses on above-mentioned basis, carried out effectual recovery, recycle to material waste gas dust, improved the utilization ratio of raw and other materials and, fine reaching energy saving and emission reduction's target.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the middle dust-settling box of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure inside the middle feeding bin of the present invention;
fig. 4 is a cross-sectional view of the joint of the intermediate communicating pipe and the first extension pipe 7 of the present invention;
FIG. 5 is a schematic view of the cross-sectional structure of the interior of the middle dust-settling tank of the present invention;
fig. 6 is a gas flow diagram when the second valve is closed in the present invention.
Detailed Description
As shown in fig. 1 to 6, an exhaust emission device for a ladle rotary furnace, transition portion 2 between ladle furnace feed end and calcining furnace is equipped with exhaust emission mouth, communicating pipe 6 is three-way structure, the first port and the exhaust emission mouth intercommunication of communicating pipe 6, the second port is connected with the middle section or the hypomere of surge bin 1, the third port is connected with the air inlet of air exhauster 9 through first extension pipe 7, the gas outlet of air exhauster 9 passes through second extension pipe 11 and dust fall case 10 intercommunication, be equipped with blast pipe 12 on dust fall case 10 top, the bottom and the inside intercommunication of dust fall case 10 of blast pipe 12, the top and the bottom of surge bin 1 are equipped with first discharge pipe 4 respectively, and second discharge pipe 5.
When the device is used, through the work of the exhaust fan 9, the internal pressure of the first extension pipe 7 is increased, and suction force is generated inside the pipe body 7, on one hand, cold air is sucked from the buffer bin 1 and the first discharge pipe 4, on the other hand, high-heat waste gas dust in the ladle furnace is sucked from the first port of the communicating pipe 6, so that the high-heat waste gas dust and the air with lower temperature sequentially pass through the first extension pipe 7 after being combined, the exhaust fan 9 and the second extension pipe 11 into the dust falling box 10, the high-heat waste gas dust can be obviously cooled, the heat damage or damage of the pipe bodies and devices such as the third discharge pipe 7, the exhaust fan 9 and the conveying pipe 11 due to overheating is avoided, and the overall heat resistance of the device is improved.
Simultaneously, the waste gas dust of high fever is partly can discharge from the first discharge pipe 4 at surge bin 1 top under the effect of high fever gas, this part high fever gas dust is when surge bin 1 of process like this, under the effect of the lower surge bin 1 of temperature and cold air, waste gas dust can fall the dust and fall from the second discharge pipe 5 of surge bin 1 bottom, this part material dust that falls can be retrieved and further utilized after collecting, the utilization ratio of raw and other materials has been improved.
Further, the body between first port of communicating pipe and the second port is the body structure of long straight type, this body is personally submitted certain contained angle slope setting with the level, the third port department that just is located communicating pipe 6 on this body is equipped with filter screen 701, the body that this slope set up enables to continue the heating reaction in the ladle rotary furnace because of receiving the fine fall back of material of temperature's influence dust fall, the filter screen can block the great material dust of a part granule simultaneously, make this part the material dust that is blockked fall back again in the ladle rotary furnace, and prevent that the large granule dust from causing the damage to follow-up equipment, and very big reduction the probability of blocking the pipeline.
Further, as shown in fig. 5, be multilayer structure from last to down in the box of dust fall case 10 inside, be equipped with space bar 8 between layer 18 and layer, second extension pipe 11 and dust fall case 10 intercommunication and this tip extend to the inside bottom of dust fall case box, are equipped with a plurality of perforation 3 on the face of space bar, all are equipped with drain pipe 16 on each layer of dust fall case box and be located the dust fall case lateral wall, and 16 one end of drain pipe and dust fall incasement portion intercommunication, the other end are equipped with first valve.
Adopt this structure, under the effect of air exhauster 9 and second extension pipe 11, the bottom of second extension pipe 11 promptly in dust fall case 10 multilayer structure's bottommost layer can produce a large amount of bubbles that have waste gas, the material dust, be equipped with a plurality of fenestrations on the face of space bar, then the bubble can pass these perforation at the in-process that rises from dust fall case 10 bottom, when the diameter of bubble is greater than fenestration aperture, thereby the bubble can be extrudeed breakage, the material dust in the bubble can be better dissolved in the aquatic in dust fall case 10, through the space bar that has a plurality of fenestrations of layer upon layer arrangement, can avoid the bubble directly to take its inside material dust off dust fall case and discharge from blast pipe 12, like this further leave the raw and other materials dust and be convenient for recycle in dust fall case 10, avoid the dust to discharge simultaneously and cause the influence to the environment in the outside air.
Be equipped with water inlet 15 on dust fall case 10's box, the water inlet is used for filling the coolant liquid to dust fall case, and optional coolant liquid is water, and the coolant liquid still can decompose into clean gaseous liquid at the in-process of evaporation, is equipped with switch door 17 in dust fall case 10 bottom.
The second valve is arranged on the first extension pipe 7, the exhaust fan 9, the first extension pipe 7 and the second extension pipe 11 are detachable structures, and by adopting the structure, the maintenance and/or replacement of the rear end component (such as the exhaust fan 9 and the dust falling box 10) of the first extension pipe 7 can be realized on the basis of not stopping the operation of the ladle rotary furnace
Specifically, after the second valve is closed, as shown in fig. 6, the high-temperature exhaust gas with the material dust flows into the surge bin 1 through the communicating pipe 6, and is discharged from the first discharge pipe 4 after being cooled, buffered and dusted in the surge bin 1, but this case is only applicable to the ladle rotary furnace for calcining the material with less impurities and high raw material concentration, and in this case, the exhaust gas with lower concentration can be discharged through the cooperation of the communicating pipe 6, the surge bin 1 and the first discharge pipe 4.
When the exhaust fan 9 is to be inspected and/or repaired and replaced, the second valve is closed, and the exhaust fan 9 is detached from the first extension pipe 7 and the second extension pipe 11, respectively, so that the exhaust fan 9 can be inspected and/or repaired and replaced.
A method for recycling materials in the ladle rotary furnace waste gas discharge device adopts the following steps when recovering materials dissolved in liquid in a dust settling tank 10;
1) the second valve is closed, and the second extension pipe 11 is detached from the exhaust fan 9;
2) selecting a corresponding layer 18 according to the height of the liquid level in the dust falling box 10, opening a first valve on a drainage pipe 16 of the layer, taking a certain amount of liquid, and judging whether the concentration of the liquid obtained by mixing the material in the taken liquid and the water reaches a target value;
3) when the concentration of the liquid in the step 1) reaches a target value, evaporating the liquid and only leaving material powder;
4) collecting the material dust obtained in the step 2) and putting the collected material dust into production and processing.
Alternatively, in the first mode, in step 3, the first valve on the drain pipe at the bottom layer of the dust-falling box 10 is opened, the liquid in the dust-falling box 10 is taken out, and the liquid is evaporated by evaporation.
In another embodiment, wheels 13 are provided at the bottom of the dust settling box 10, a handle 14 is provided on the dust settling box 10, the dust settling box 10 is moved to a drying position by the handle 14 and the wheels 13 in step 3, the liquid is evaporated by heating the dust settling box 10 or by naturally drying the liquid in the dust settling box 10, the opening and closing door 17 at the bottom end of the dust settling box 10 is opened, and the material powder in the dust settling box 10 is taken out by opening and closing the door 17.
In the above 2 modes, the operation of the ladle rotary furnace during normal operation can be realized under the condition that the second valve is involved, specifically, after the second valve is closed, as shown in fig. 6, the high-temperature waste gas with material dust flows into the surge bin 1 through the communicating pipe 6, and is discharged from the first discharge pipe 4 after being cooled, buffered and dusted in the surge bin 1, but this condition is only applicable to the ladle rotary furnace for calcining materials with less impurities and high raw material concentration, and in this condition, the discharge of the waste gas with lower concentration can be realized through the cooperation of the communicating pipe 6, the surge bin 1 and the first discharge pipe 4.
The lower side of second discharge pipe 5 is equipped with and holds case 501, and the connecting portion of second calandria pipe 5 and the bottom intercommunication of surge bin 1, and the free end of second calandria pipe 5 sets up towards the case mouth that holds case 501. Thus, the falling material dust can be well collected by the holding box 501 and reused.

Claims (7)

1. An exhaust gas discharge device for a ladle rotary furnace, characterized in that: transition portion (2) between ladle furnace feed end and calciner is equipped with exhaust emission mouth, communicating pipe (6) are three way construction, the first port and the exhaust emission mouth intercommunication of communicating pipe (6), the second port is connected with the middle section or the hypomere of surge bin (1), the third port is connected with the air inlet of air exhauster (9) through first extension pipe (7), the gas outlet of air exhauster (9) passes through second extension pipe (11) and dust fall case (10) intercommunication, be equipped with blast pipe (12) on dust fall case (10) top, the bottom and the inside intercommunication of dust fall case (10) of blast pipe (12), the top and the bottom of surge bin (1) are equipped with first discharge pipe (4) respectively, and second delivery pipe (5), the below of second delivery pipe (5) is equipped with bearing case (501).
2. The exhaust gas discharge apparatus for a ladle rotary furnace according to claim 1, wherein: the pipe body between the first port and the second port of the communicating pipe is of a long straight pipe body structure, the pipe body and the horizontal plane are obliquely arranged at a certain included angle, and a filter screen (701) is arranged on the pipe body and located at the third port of the communicating pipe (6).
3. The exhaust gas discharge apparatus for a ladle rotary furnace according to claim 1, wherein: be multilayer structure from last to down in the box of dust fall case (10) inside, be equipped with space bar (8) between layer (18) and layer, second extension pipe (11) and dust fall case (10) intercommunication and this tip extend to the inside bottom of dust fall case box, be equipped with a plurality of perforation (3) on the face of space bar, each layer of dust fall case box just is located and all is equipped with drain pipe (16) on the dust fall case lateral wall, drain pipe (16) one end and the inside intercommunication of dust fall case, the other end is equipped with first valve.
4. The exhaust gas discharge apparatus for a ladle rotary furnace according to claim 3, wherein: a water inlet (15) is arranged on the box body of the dust falling box (10), and a switch door (17) is arranged at the bottom end of the dust falling box (10).
5. The exhaust gas discharge apparatus for a ladle rotary furnace according to claim 4, wherein: a second valve is arranged on the first extension pipe (7), and the exhaust fan (9), the first extension pipe (7) and the second extension pipe (11) are detachable structures.
6. The exhaust gas discharge apparatus for a ladle rotary furnace according to claim 5, wherein: when the exhaust fan (9) is inspected and/or maintained and replaced, the second valve is closed, and the exhaust fan (9) can be detached from the first extension pipe (7) and the second extension pipe (11) respectively to inspect, maintain and replace the exhaust fan (9).
7. The exhaust gas discharge apparatus for a ladle rotary furnace according to any one of claims 1 to 5, wherein: the connecting portion of second delivery pipe (5) and the bottom intercommunication of surge bin (1), and the free end of second delivery pipe (5) sets up towards the case mouth that holds and meets case (501).
CN201920814541.6U 2019-05-31 2019-05-31 Waste gas discharge device for ladle rotary furnace Active CN210057724U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920814541.6U CN210057724U (en) 2019-05-31 2019-05-31 Waste gas discharge device for ladle rotary furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920814541.6U CN210057724U (en) 2019-05-31 2019-05-31 Waste gas discharge device for ladle rotary furnace

Publications (1)

Publication Number Publication Date
CN210057724U true CN210057724U (en) 2020-02-14

Family

ID=69455739

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920814541.6U Active CN210057724U (en) 2019-05-31 2019-05-31 Waste gas discharge device for ladle rotary furnace

Country Status (1)

Country Link
CN (1) CN210057724U (en)

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