CN112143998A - Nose zinc ash treatment device of continuous hot galvanizing furnace - Google Patents
Nose zinc ash treatment device of continuous hot galvanizing furnace Download PDFInfo
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- CN112143998A CN112143998A CN202011038292.XA CN202011038292A CN112143998A CN 112143998 A CN112143998 A CN 112143998A CN 202011038292 A CN202011038292 A CN 202011038292A CN 112143998 A CN112143998 A CN 112143998A
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 300
- 239000011701 zinc Substances 0.000 title claims abstract description 293
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 293
- 238000005246 galvanizing Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 107
- 239000010959 steel Substances 0.000 claims abstract description 107
- 239000007924 injection Substances 0.000 claims abstract description 45
- 238000002347 injection Methods 0.000 claims abstract description 45
- 238000000137 annealing Methods 0.000 claims abstract description 32
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 32
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 230000007547 defect Effects 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 101
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- 230000000087 stabilizing effect Effects 0.000 description 14
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 238000001914 filtration Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 238000004401 flow injection analysis Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011797 cavity material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
A nose zinc ash treatment device of a continuous hot galvanizing furnace is used for environment-friendly zinc ash treatment of a continuous hot galvanizing high-speed unit, belongs to the technical field of hot galvanizing furnace nose zinc ash treatment equipment manufacture, and comprises a plate type zinc ash suction device which is provided with a first suction chamber, a second suction chamber, a third suction chamber and a gas injection chamber in sequence from one end of a furnace nose close to an annealing furnace to one end of the furnace nose close to a zinc pot, the invention designs a zinc ash treatment device for a nose of a continuous hot galvanizing furnace by adopting a mode that the plate type zinc ash suction device is matched with a gas conveying concentric pipeline of which the outer pipeline is a gas suction pipeline and the inner pipeline is a gas injection pipeline, and solves the problem that zinc ash is adhered to strip steel along with the running direction of the strip steel to generate a zinc ash defect when the nose of the vertical annealing furnace is immersed in liquid zinc in a zinc pot.
Description
Technical Field
The utility model provides a hot galvanizing furnace nose zinc ash processing apparatus in succession for the environmental protection zinc ash of the high-speed unit of hot galvanizing in succession handles, belongs to hot galvanizing furnace nose zinc ash processing apparatus manufacturing technical field.
Background
The furnace nose of the neutral annealing furnace in the continuous hot galvanizing production is normally immersed in liquid zinc in a zinc pot, zinc steam generated after heated strip steel is immersed in zinc liquid meets nitrogen in the furnace nose to generate condensed zinc ash, the zinc ash is brought into a quenching section of the annealing furnace through the furnace nose along with nitrogen or nitrogen-hydrogen mixed gas, the other part of the zinc ash is adhered to the inner wall of the furnace nose, and the zinc ash is floated on the strip steel and the zinc liquid level in the furnace nose after being excessively gathered and adhered to the strip steel along with the running direction of the strip steel to generate zinc ash defects.
After a large amount of zinc ash is gathered in the furnace nose of the vertical furnace, abnormal vibration can occur along with the operation of a production line, zinc ash falls onto strip steel and a zinc liquid level in the furnace nose under the influence of the flowing of protective gas in the furnace, most of the zinc ash falls on the upper surface of the strip steel and is taken out of a zinc pot along with the strip steel operated by the production line, the product is leaked to be plated or the adhesive force of a plating layer is not strong due to the large amount of zinc ash, the defects of plating layer cracking, dezincification and local leakage plating can occur in riveting or stamping DDQ-grade household appliance boards, the abrasion of a die is increased during the processing of customers, the service life of the die is shortened, the production cost is improved, the product quality cannot be guaranteed, and the products subjected to local dezincification flow into a humid place in the south or the north and can be corroded too early when.
People also find a plurality of methods for treating and inhibiting zinc ash, such as a nitrogen humidifying system, a zinc ash filtering system, a zinc pumping pump and other equipment, but the problems of zinc ash generation and product quality cannot be solved effectively fundamentally, the zinc ash adhered to the upper surface of the strip steel is more a negative factor for a zinc pot sinking roller and a rear stabilizing roller which are contacted with the upper surface of the strip steel than the lower surface of the strip steel, because the zinc ash is adhered to the upper surface of the strip steel and then generates friction after passing through the sinking roller and the rear stabilizing roller, the zinc ash is taken away by the sinking roller and the rear stabilizing roller, the increase of the slag adhesion amount of the sinking roller and the rear stabilizing roller is influenced, new defects are generated, and the equipment in the zinc pot is extremely adversely influenced.
Disclosure of Invention
The invention aims to solve the problems that a plate type zinc ash suction device is matched with a gas conveying concentric pipeline with an external pipeline being a gas suction pipeline and an internal pipeline being a gas injection pipeline, and a zinc ash treatment device for a nose of a continuous hot galvanizing furnace is designed, so that the problems that a nose of a vertical annealing furnace is immersed in liquid zinc in a zinc pot, zinc steam generated after heated strip steel is immersed in zinc liquid meets nitrogen in the nose to generate condensed zinc ash, the zinc ash is brought into a quenching section of the annealing furnace through the nose along with nitrogen or nitrogen-hydrogen mixed gas and adheres to the inner wall of the nose, and the zinc ash floats to strip steel and the zinc liquid level in the nose along with excessive accumulation, and adheres to the strip steel along with the running direction of the strip steel to generate zinc ash defects are solved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a zinc ash treatment device for a nose of a continuous hot galvanizing furnace comprises a plate type zinc ash suction device, wherein the plate type zinc ash suction device is arranged on the surface of strip steel on the inner side wall of the nose of the furnace, the projection of the plate type zinc ash suction device on the collinear vertical surface with the length direction line of the strip steel in the nose of the furnace is in a trapezoid shape, the longer bottom side of the trapezoid shape is fixedly connected with the inner side wall of the nose of the furnace, the plate type zinc ash suction device is sequentially provided with a first suction chamber, a second suction chamber, a third suction chamber and a gas injection chamber from one end, close to a zinc pot, of the nose of the furnace to one end, close to the inner side wall of the nose of the furnace, and is connected with a gas conveying concentric pipeline penetrating through the side wall of the nose of the furnace, the gas conveying concentric pipeline comprises a gas injection pipeline and a gas suction pipeline, the cross section of which is concentric, the gas, one end of the gas suction pipeline in the furnace nose is respectively communicated with the first suction chamber, the second suction chamber, the third suction chamber and the gas injection chamber, and the end part of the gas suction pipeline outside the furnace nose is connected with the zinc ash treatment mechanism.
In the invention, a plate type zinc ash suction device is arranged on the inner side wall of a furnace nose of a galvanizing annealing furnace, the plate type zinc ash suction device is correspondingly arranged on the surface of strip steel and is arranged in the width direction of the furnace nose, furnace gas containing zinc ash in the furnace nose is pumped out and filtered through the plate type zinc ash suction device and then is sent into the furnace nose to be close to the annealing furnace, the interior of the furnace nose is sealed at the tail end opening of the furnace nose through zinc liquid in a zinc pot, air is prevented from entering the interior of the furnace nose to influence the atmosphere in the annealing furnace, the strip steel enters the zinc liquid after being heated through the annealing furnace, zinc ash is generated in the furnace nose after the zinc liquid surface is contacted with high-temperature strip steel, the strip steel bypasses a zinc pot sinking roller and passes through a rear stabilizing roller and a front stabilizing roller to be discharged out of the zinc pot to run upwards, one end with the longest side length of the plate type zinc ash suction device is arranged, the strip steel is positioned at the highest point of the trapezoid away from the nearest end of the strip steel, a gradual transition mode is adopted, even if the strip steel is scraped to a plate type zinc ash aspirator, the strip steel can not be broken, the gas conveying concentric pipeline is the combination of the suction pipelines of the first suction cavity, the second suction cavity and the third suction cavity and the air supply pipeline of the gas injection cavity, gas and injection gas are independently sucked, the gas injection pipeline is positioned in the gas suction pipeline, in order to not influence the temperature of the strip steel plate by cooling gas, the gas injection pipeline is used for heating the small-flow injection gas and transferring the heat generated by the high-temperature gas suction pipeline to the pipeline wall to realize the heating purpose, so that the temperature of the injection gas is close to the temperature of the strip steel plate, the accurate control of the actual plate temperature of the strip steel entering a zinc pot is ensured, and the use efficiency of the injection; the invention solves the problems of the trend of pipelines and the utilization of energy in a narrow space, reduces the energy consumption, a gas suction pipeline sucks out zinc ash in a furnace nose, and the sucked zinc ash is processed by a zinc ash processing mechanism, and the invention designs a continuous hot galvanizing furnace nose zinc ash processing device by adopting a mode that a plate type zinc ash suction device is matched with a gas conveying concentric pipeline of which an outer pipeline is a gas suction pipeline and an inner pipeline is a gas injection pipeline, thereby solving the problem that the furnace nose of a vertical annealing furnace is immersed in liquid zinc in a zinc pot, the zinc steam generated after the heated strip steel is immersed in the zinc liquid meets the nitrogen in the furnace nose to generate condensed zinc ash, the zinc ash is carried into the quenching section of the annealing furnace along with the nitrogen or the nitrogen-hydrogen mixed gas through the furnace nose, and the zinc ash adheres to the inner wall of the furnace nose, and can float to the strip steel and the zinc liquid level in the furnace nose after being excessively gathered, and the zinc ash defect is generated by the adhesion of the zinc ash on the strip steel along with the running direction of the strip steel.
In a preferable mode, the surface of the plate type zinc ash suction device is provided with a plurality of suction holes with the distance of 10-20mm and the diameter of 8-12 mm.
As a preferable mode, the surface of the plate type zinc ash suction device is provided with a plurality of slit type suction nozzles which are vertical to the surface of the strip steel or staggered with 30-90 degrees of inclination, the distance between the slit type suction nozzles is 50-500mm, and the inner diameter of the slit type suction nozzle is 8-10 mm.
Preferably, the zinc ash treatment mechanism comprises a suction filter, the input end of the suction filter is communicated with the gas suction pipeline through a filter suction pipeline, the output end of the suction filter is respectively provided with a filter exhaust pipeline and a filter conveying pipeline, one end of the filter exhaust pipeline, far away from the suction filter, is close to the annealing furnace and is communicated with the inside of the furnace nose, and one end of the filter conveying pipeline, far away from the suction filter, is connected with a zinc ash hopper.
As a preferable mode, a plurality of plate-type zinc ash suction devices are arranged on the inner side wall of the furnace nose on the upper surface and the lower surface of the strip steel in a staggered mode, and the distance from the plate-type zinc ash suction devices on the upper surface of the strip steel to the upper surface of the strip steel is equal to the distance from the plate-type zinc ash suction devices on the lower surface of the strip steel to the lower surface of the strip steel.
As a preferable mode, a suction balance cavity is arranged among the first suction cavity, the second suction cavity and the third suction cavity, a reinforcing rib penetrating through the plate type zinc ash suction device is arranged on the suction balance cavity, and the reinforcing rib is perpendicular to the inner side wall of the furnace nose.
As a preferable mode, the reinforcing ribs are two partition plates, and the two partition plates divide the third suction cavity into a transition region parallel to the strip steel.
As a preferable mode, an external vibrator of the furnace nose is arranged on the outer side wall of the furnace nose.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention designs a zinc ash treatment device for a nose of a continuous hot galvanizing furnace by adopting a mode that a plate type zinc ash suction device is matched with a gas conveying concentric pipeline of which an external pipeline is a gas suction pipeline and an internal pipeline is a gas injection pipeline, and solves the problems that zinc ash in the nose of a vertical annealing furnace is immersed in liquid zinc in a zinc pot, zinc steam generated after heated strip steel is immersed in zinc liquid meets nitrogen in the nose to generate condensed zinc ash, the zinc ash is brought into a quenching section of the annealing furnace through the nose along with nitrogen or nitrogen-hydrogen mixed gas and adheres to the inner wall of the nose, and the zinc ash floats to strip steel and a zinc liquid level in the nose along with excessive accumulation and adheres to the strip steel along with the running direction to generate zinc ash defects.
(2) The surface of the plate-type zinc ash suction device adopts a cavity formed by a porous zinc ash suction isolation plate, and the zinc ash in the furnace nose is sucked in the largest area.
(3) The invention adopts a plurality of slit type suction nozzles which are vertical to the surface of the strip steel or are staggered with 30-90 degrees of inclination, and can absorb zinc ash in the furnace nose 1 and on the surface of the strip steel in a large area.
(4) The gas conveying concentric pipeline of the plate-type zinc ash suction device is connected with a zinc ash filter suction pipeline, a zinc ash suction filter is connected with a zinc ash filter suction pipeline, a zinc ash filter exhaust pipeline and a zinc ash filter conveying pipeline, and the zinc ash filter conveying pipeline is connected with a zinc ash collecting cabin. Furnace gas with zinc ash extracted by the plate-type zinc ash suction device is conveyed to the zinc ash suction filter through a zinc ash filter suction pipeline for filtering, the zinc ash suction filter also has the functions of sucking and filtering the zinc ash, and clean gas after filtering is conveyed to an ascending section of the furnace nose through a zinc ash filter exhaust pipeline for recycling by utilizing the pressure provided by the zinc ash suction filter, so that normal furnace pressure is ensured, and the energy consumption is reduced. And conveying the zinc ash filtered by the zinc ash suction filter to a zinc ash collection tank through a pipeline for centralized treatment.
(5) The invention installs two sets of corresponding plate type zinc ash suction devices in a furnace nose 1 of a galvanizing annealing furnace, the plate type zinc ash suction devices are respectively arranged on the upper surface and the lower surface of a strip steel and are arranged in the width direction of the furnace nose, furnace gas containing zinc ash in the furnace nose is pumped out and filtered through the plate type zinc ash suction devices and then is sent into a section of the furnace nose close to the annealing furnace, the furnace nose 1 is inserted into zinc liquid in a zinc pot, the zinc liquid level keeps a certain immersion distance with the tail end of the furnace nose to prevent air from entering the furnace nose, the lowest end of the plate type zinc ash suction device close to the zinc pot keeps a safety distance of 300 plus 500mm with the zinc liquid level, strip steel enters the zinc pot through a telescopic furnace nose and bypasses a sinking roller of the zinc pot to vertically turn upwards to run, a front stabilizing roller and a rear stabilizing roller of the zinc pot stabilize the shake of the strip steel in the running process, the interior of the furnace nose seals the tail, air is prevented from entering the interior of the furnace nose to influence the atmosphere in the annealing furnace, strip steel enters zinc liquid after being heated by the annealing furnace, zinc ash generated in the interior of the furnace nose can be influenced after the zinc liquid surface is contacted with high-temperature strip steel, and the strip steel bypasses a zinc pot sink roller, passes through a rear stabilizing roller and a front stabilizing roller and then is discharged out of a zinc pot and runs upwards; the plate type zinc ash suction device corresponds to the upper surface of the strip steel in the furnace nose, the amount of zinc ash on the upper surface of the strip steel is large relative to the amount of zinc ash on the lower surface of the strip steel, after the zinc ash is generated, the zinc ash can flow to other sections of the annealing furnace along with the protective gas in the furnace, a large amount of zinc ash can be continuously gathered on the shell in the furnace nose along with the prolonging of production time and covers the surface, the zinc ash on the top end and two sides in the furnace nose is vibrated to fall downwards, one part of the zinc ash falls on the upper surface of the strip steel, the other part of the zinc ash falls on the bottom of the furnace nose in a gap between the edge part of the strip steel and the side wall of the furnace nose, and the wider the width of the strip steel is the less; a large amount of zinc ash floats on the upper surface of the strip steel, one part of the zinc ash is adhered to the strip steel and taken away by the strip steel through the operation of the strip steel, and the other part of the zinc ash is gathered on the surface of zinc liquid in the furnace nose; the zinc ash amount processed by the plate-type zinc ash suction device corresponding to the upper surface of the strip steel is larger than that of the plate-type zinc ash suction device corresponding to the lower surface of the strip steel.
(6) The reinforcing ribs arranged in the plate type zinc ash suction device are connected with the gas conveying concentric pipeline, the first suction cavity, the second suction cavity and the third suction cavity, and are welded on the suction balance cavity and penetrate through the suction balance cavity; the plate-type zinc ash aspirator adopts a stainless steel series, has the capabilities of high temperature resistance and harmful gas corrosion resistance, adopts the structural design of the reinforcing ribs inside the plate-type zinc ash aspirator, and prevents the cavity from deforming or damaging due to serious bad plate shape scraping.
(7) The transition area parallel to the strip steel is arranged between the second suction cavity and the third suction cavity which are close to the strip steel, the suction force of the transition area is larger than that of other transition areas, the transition area is matched with a mode that one end with the longest side length of the plate type zinc ash suction device is arranged in the furnace nose, so that the whole plate type zinc ash suction device is in a flat shape, two tail ends of the plate type zinc ash suction device are gradually contracted and tightly attached to the interior of the furnace nose, the end with the longest side length is positioned at the highest point of a trapezoid away from the nearest end of the strip steel, the strip steel cannot be broken even if being scraped to the plate type zinc ash suction device through the gradual transition mode, and the passing.
(8) The external vibrator of the furnace nose is arranged outside the furnace nose, the vibrator can be driven by alternating current or direct current, the vibration frequency is adjustable, the vibration power is required to meet the requirement that the furnace nose can reduce the amount of zinc ash attached to the interior of the furnace nose under a certain amplitude, the vibrator is used for generating vibration before the zinc ash attached to the furnace nose is thoroughly cleaned, the zinc ash which is attached to the interior of the furnace nose and cannot be treated leaves an attached object through vibration and falls below the furnace nose, and the zinc ash falling to the tail end of the furnace nose is removed again through gas sprayed from a gas spraying chamber of the plate type zinc ash suction device, so that the aim of thoroughly cleaning the zinc ash is fulfilled.
Drawings
FIG. 1 is a front view of a plate-type zinc ash aspirator in the present invention;
FIG. 2 is a top view of the plate-type zinc ash sucker in accordance with the present invention;
FIG. 3 is a left side view of the plate-type zinc ash sucker in accordance with the present invention;
FIG. 4 is a schematic structural view of a plate-type zinc ash aspirator gas conveying concentric pipeline in the invention;
FIG. 5 is a schematic diagram illustrating an actual application of the present invention;
FIG. 6 is a schematic gas flow diagram of a plate zinc ash aspirator;
FIG. 7 is a schematic diagram of zinc ash filtration in a plate type zinc ash suction device.
Wherein, 1, a furnace nose; 101. a plate-type zinc ash aspirator; 1010. the inner side wall of the furnace nose; 1011. the furnace nose is externally provided with a vibrator; 1012. a gas delivery concentric tube; 10121. a gas suction duct; 10122. a gas injection conduit; 1013. a suction balancing chamber; 1014. a gas injection chamber; 1015. a first suction chamber; 1016. A second suction chamber; 1017. reinforcing ribs; 1018. a third suction chamber; 1019. a suction hole; 102. a zinc ash collection chamber; 1021. a filter exhaust conduit; 1022. a suction filter; 1023. a filter delivery conduit; 1024. a filter suction duct; 1025. a zinc ash hopper; 1026. a transition zone; 103. an injection duct; 2. Strip steel; 3. a zinc pot; 4. zinc liquid; 5. a zinc pot sink roll; 6. a rear stabilizing roller; 7. a front stabilizing roller; 8. the zinc level.
Detailed Description
Example 1:
referring to fig. 1-7, a zinc ash treatment device for a nose of a continuous hot galvanizing furnace comprises a plate-type zinc ash suction device 101 which is arranged on the surface of a strip steel 2 on the inner side wall 1010 of the nose of the furnace, wherein the projection of the plate-type zinc ash suction device 101 on a vertical surface which is collinear with the length direction line of the strip steel 2 in the nose of the furnace 1 is in a trapezoid shape, the longer bottom side of the trapezoid shape is fixedly connected with the inner side wall of the nose of the furnace 1, a first suction chamber 1015, a second suction chamber 1016, a third suction chamber 1018 and a gas injection chamber 1014 are sequentially arranged from one end of the nose 1 close to an annealing furnace to one end of the nose 1 close to a zinc pot 3, one end of the plate-type zinc ash suction device 101 close to the inner side wall of the nose 1 is connected with a gas conveying concentric pipeline which penetrates through the side wall of the nose 1012 of the furnace, the gas conveying concentric pipeline 1012 comprises a gas, the gas injection pipeline 10122 is positioned in the gas suction pipeline 10121, the gas injection pipeline 10122 is communicated with the gas injection chamber 1014 in the furnace nose 1, one end of the gas suction pipeline 10121 in the furnace nose 1 is respectively communicated with the first suction chamber 1015, the second suction chamber 1016, the third suction chamber 1018 and the gas injection chamber 1014, and the end part of the gas suction pipeline 10121 outside the furnace nose 1 is connected with the zinc ash treatment mechanism.
Furthermore, the surface of the plate type zinc ash suction device 101 is provided with a plurality of slit type suction nozzles which are vertical to the surface of the strip steel 2 or staggered with 30-90 degrees of inclination, the distance between the slit type suction nozzles is 50-500mm, the inner diameter of the slit type suction nozzles is 8-10mm, and the zinc ash in the furnace nose 1 and on the surface of the strip steel can be absorbed in a large area.
In the embodiment, a plate type zinc ash suction device 101 is installed on the inner side wall 1010 of the furnace nose of the galvanizing annealing furnace, the plate type zinc ash suction device 101 is correspondingly arranged on the surface of the strip steel 2 and is arranged in the width direction of the furnace nose 1, furnace gas containing zinc ash in the furnace nose 1 is pumped out and filtered through the plate type zinc ash suction device 101 and then is sent into the furnace nose 1 to be close to the annealing furnace, the interior of the furnace nose 1 is sealed by zinc liquid in a zinc pot 3 at the opening at the tail end of the furnace nose 1, air is prevented from entering the interior of the furnace nose 1 to influence the atmosphere of the annealing furnace, the strip steel 2 enters zinc liquid 4 after being heated through the annealing furnace, the zinc liquid surface is influenced to generate zinc ash in the furnace nose 1 after being contacted with the high-temperature strip steel 2, the strip steel 2 bypasses a zinc pot sinking roller 5 and passes through a rear stabilizing roller 6 and a front stabilizing roller 7 to go out of the zinc pot 3 to run upwards, the, the plate type zinc ash suction device 101 is in a flat shape as a whole, two tail ends of the plate type zinc ash suction device are gradually contracted and tightly attached between two ends of the furnace nose 1, the nearest end of the strip steel 2 is positioned at the highest point of a trapezoid, a gradual transition mode is adopted, even if the strip steel 2 is scraped to the plate type zinc ash suction device 101, the strip steel 2 can not be broken, the gas conveying concentric pipeline 1012 is the combination of the air supply pipelines of the gas suction pipeline 10121 and the gas injection pipeline 10122, gas and injection gas are independently sucked, the gas injection pipeline 10122 is positioned in the gas suction pipeline 10121, in order to not influence the plate temperature of the strip steel 2 on the influence of cooling gas, the gas injection pipeline 10122 is used for heating the small-flow injection gas, transferring heat generated by the high-temperature gas suction pipeline 10121 to the pipeline wall to realize the heating purpose, so that the temperature of the injection gas is close to the plate, the actual plate temperature of the strip steel 2 entering the zinc pot 3 is accurately controlled, and the use efficiency of the jet gas is improved; the invention solves the problems of the trend of pipelines and the utilization of energy in a narrow space, reduces the energy consumption, adopts a mode that a plate type zinc ash suction device 101 is matched with a gas conveying concentric pipeline 1012 of which the outer pipeline is a gas suction pipeline 10121 and the inner pipeline is a gas injection pipeline 10122, designs a continuous hot galvanizing furnace nose zinc ash treatment device, solves the problems that the furnace nose 1 of a vertical annealing furnace is immersed in liquid zinc in a zinc pot 3, zinc steam generated after a heated strip steel 2 is immersed in a zinc liquid 4 meets nitrogen in the furnace nose 1 to generate condensed zinc ash, the zinc ash is brought to a quenching section of the annealing furnace through the furnace nose 1 along with nitrogen or mixed gas of nitrogen and hydrogen and adheres to the inner side wall 1010 of the furnace nose, and the zinc ash can float to the strip steel 2 and the zinc liquid level in the furnace nose 1 after being gathered too much, the zinc ash defect is generated along with the adhesion of the strip steel 2 on the strip steel 2 in the running direction.
Example 2:
referring to fig. 1-7, a zinc ash treatment device for a nose of a continuous hot galvanizing furnace comprises a plate-type zinc ash suction device 101 which is arranged on the surface of a strip steel 2 on the inner side wall 1010 of the nose of the furnace, wherein the projection of the plate-type zinc ash suction device 101 on a vertical surface which is collinear with the length direction line of the strip steel 2 in the nose of the furnace 1 is in a trapezoid shape, the longer bottom side of the trapezoid shape is fixedly connected with the inner side wall of the nose of the furnace 1, a first suction chamber 1015, a second suction chamber 1016, a third suction chamber 1018 and a gas injection chamber 1014 are sequentially arranged from one end of the nose 1 close to an annealing furnace to one end of the nose 1 close to a zinc pot 3, one end of the plate-type zinc ash suction device 101 close to the inner side wall of the nose 1 is connected with a gas conveying concentric pipeline which penetrates through the side wall of the nose 1012 of the furnace, the gas conveying concentric pipeline 1012 comprises a gas, the gas injection pipeline 10122 is positioned in the gas suction pipeline 10121, the gas injection pipeline 10122 is communicated with the gas injection chamber 1014 in the furnace nose 1, one end of the gas suction pipeline 10121 in the furnace nose 1 is respectively communicated with the first suction chamber 1015, the second suction chamber 1016, the third suction chamber 1018 and the gas injection chamber 1014, and the end part of the gas suction pipeline 10121 outside the furnace nose 1 is connected with the zinc ash treatment mechanism.
Furthermore, a plurality of suction holes 1019 with the interval of 10-20mm and the diameter of 8-12mm are arranged on the surface of the plate type zinc ash suction device 101, a cavity formed by a porous type zinc ash suction isolation plate is adopted on the surface of the plate type zinc ash suction device 101, and the zinc ash in the furnace nose 1 is sucked in the largest area.
Further, the zinc ash treatment mechanism comprises a suction filter 1022, the input end of the suction filter 1022 is communicated with the gas suction pipeline 10121 through a filter suction pipeline 1024, the output end of the suction filter 1022 is respectively provided with a filter exhaust pipeline 1021 and a filter conveying pipeline 1023, one end of the filter exhaust pipeline 1021, which is far away from the suction filter 1022, is communicated with the inside of the furnace nose 1 near the annealing furnace at the furnace nose 1, and one end of the filter conveying pipeline 1023, which is far away from the suction filter 1022, is connected with a zinc ash hopper 1025.
Furthermore, a plurality of plate-type zinc ash suction devices 101 are arranged on the inner side wall 1010 of the furnace nose on the upper surface and the lower surface of the strip steel 2 in a staggered mode, and the distance from the plate-type zinc ash suction devices 101 on the upper surface of the strip steel 2 to the upper surface of the strip steel 2 is equal to the distance from the plate-type zinc ash suction devices 101 on the lower surface of the strip steel 2 to the lower surface of the strip steel 2.
Furthermore, a suction balance cavity 1013 is arranged among the first suction chamber 1015, the second suction chamber 1016 and the third suction chamber 1018, a reinforcing rib (1017) penetrating through the plate type zinc ash suction device 101 is arranged on the suction balance cavity 1013, the reinforcing rib 1017 is perpendicular to the inner side wall 1010 of the furnace nose, and the plate type zinc ash suction device 101 adopts a reinforcing rib 1017 structure design, so that the cavity is prevented from being deformed or damaged due to severe bad plate type scratches.
Further, the stiffener 1017 is two partitions, which separate the third pumping chamber 1018 into a transition region 1026 parallel to the strip 2.
Further, be equipped with stove nose external vibrator 1011 on the lateral wall of stove nose 1, stove nose external vibrator 1011 uses interchange or direct current drive all can, and the vibration frequency is adjustable, and vibration power will satisfy stove nose 1 and can alleviate the zinc ash volume of adhering to in stove nose 1 inside under certain amplitude, stove nose external vibrator 1011 is used for giving out the vibration before thoroughly clearing up stove nose zinc ash, and the zinc ash that can't handle to adhering to in stove nose 1 inside leaves adnexed object through the vibration, drops in stove nose 1 below, and the gas that crosses gas injection cavity 1014 blowout of board-like zinc ash aspirator 101 clears up the zinc ash that falls in stove nose 1 terminal once more, reaches the mesh of thoroughly clearing up the zinc ash.
The use method of the nose zinc ash treatment device of the continuous hot galvanizing furnace in the embodiment comprises a short-time fault shutdown use method and a use method for cleaning the zinc ash in a planned production process.
Short-time fault shutdown processing method: after the machine is shut down, firstly, the external furnace nose vibrator 1011 of the furnace nose is opened to vibrate the zinc ash attached to the inside of the furnace nose 1 through the whole vibrating furnace nose 1, then the suction function and the gas injection function of the plate type zinc ash suction device 101 are opened, so that the furnace gas containing the zinc ash is sucked outwards by the first suction chamber 1015, the second suction chamber 1016 and the third suction chamber 1018 for filtering, the gas injection pipeline 10122 injects gas to blow the zinc ash attached to the surface of the strip steel 2 to the lower part inside the furnace nose 1, the zinc ash and the zinc slag are fished out together for centralized processing through manpower or robots, the external furnace nose vibrator 1011 stops after the zinc ash is processed, the furnace nose 1 descends to the normal online position, and other functions of the plate type zinc ash suction device 101 are stopped.
The method for cleaning the zinc ash at the nose of the furnace in the normal production process comprises the following steps: firstly, a zinc pump of the zinc liquid level of the furnace nose in the prior art is started to process zinc ash, then an external vibrator 1011 of the furnace nose is started to vibrate the zinc ash attached to the interior of the furnace nose 1 through the vibrating furnace nose 1 and drop the zinc ash, and then the suction function and the gas injection function of the plate type zinc ash suction device 101 are started to ensure that furnace gas containing the zinc ash is sucked outwards by the first suction cavity 1015, the second suction cavity 1016 and the third suction cavity 1018 for filtration treatment, and the gas injection pipeline 10122 injects gas to blow the zinc ash attached to the descending section of the strip steel 2 down to the lower part of the furnace nose 1 and is pumped to the exterior of the furnace nose 1 through the zinc pump for treatment; the external furnace nose vibrator 1011 is used cautiously under normal production conditions, because the vibration of the furnace nose 1 during use causes a large amount of zinc ash to fall off, and the plate-type zinc ash sucker 101 is not in time to be adhered to the surface of the strip steel 2 to produce a large amount of degraded products; the zinc ash filtering system of the plate-type zinc ash aspirator is normally put into use in the production process, and continuously aspirates, sprays, filters and collects the zinc ash to form a complete cycle, so that the normal furnace pressure is ensured, the influence of the zinc ash on the product is reduced, and the surface quality and the product performance of the product are improved. The suction capacity and the injection pressure related to the invention are specifically adjusted according to the type of the produced product, the stability of the zinc liquid level is also considered, different parameters can be set under different production conditions only by considering the production line speed, the aluminum content in the zinc pot components, the temperature of the zinc pot plate entering the annealing furnace, the thickness and the width of the strip steel, the strip steel plate type, the safe use and the like, and the invention is suitable for the actual needs and requirements of the site.
Claims (8)
1. The utility model provides a zinc ash processing apparatus of continuous hot galvanizing furnace nose which characterized in that: comprises a plate-type zinc ash suction device (101) which is arranged on the surface of a strip steel (2) on the inner side wall (1010) of a furnace nose, wherein the projection of the plate-type zinc ash suction device (101) on the vertical surface which is collinear with the length direction line of the strip steel (2) in the furnace nose (1) is in a trapezoid shape, the longer bottom edge of the trapezoid shape is fixedly connected with the inner side wall of the furnace nose (1), the plate-type zinc ash suction device (101) is sequentially provided with a first suction chamber (1015), a second suction chamber (1016), a third suction chamber (1018) and a gas injection chamber (1014) from one end of the furnace nose (1) close to an annealing furnace to one end of the furnace nose (1) close to a zinc pot (3), one end of the plate-type zinc ash suction device (101) close to the inner side wall of the furnace nose (1) is connected with a gas conveying concentric pipeline (1012) penetrating through the side wall of the furnace nose (1), and the gas conveying concentric pipeline (1012) comprises a gas injection, the gas injection pipeline (10122) is positioned in the gas suction pipeline (10121), the gas injection pipeline (10122) is communicated with the gas injection chamber (1014) in the furnace nose (1), one end of the gas suction pipeline (10121) in the furnace nose (1) is respectively communicated with the first suction chamber (1015), the second suction chamber (1016), the third suction chamber (1018) and the gas injection chamber (1014), and the end part of the gas suction pipeline (10121) outside the furnace nose (1) is connected with the zinc ash treatment mechanism.
2. The zinc dust treatment device for the nose of the continuous hot galvanizing furnace according to the claim 1, wherein: the surface of the plate-type zinc ash suction device (101) is provided with a plurality of suction holes (1019) with the spacing of 10-20mm and the diameter of 8-12 mm.
3. The zinc dust treatment device for the nose of the continuous hot galvanizing furnace according to the claim 1, wherein: the surface of the plate-type zinc ash suction device (101) is provided with a plurality of slit-type suction nozzles which are vertical to the surface of the strip steel (2) in the direction or are staggered with each other and have inclination of 30-90 degrees, the distance between the slit-type suction nozzles is 50-500mm, and the inner diameter of the slit-type suction nozzle is 8-10 mm.
4. The zinc dust treatment device for the nose of the continuous hot galvanizing furnace according to the claim 1, wherein: the zinc ash treatment mechanism comprises a suction filter (1022), the input end of the suction filter (1022) is communicated with a gas suction pipeline (10121) through a filter suction pipeline (1024), the output end of the suction filter (1022) is respectively provided with a filter exhaust pipeline (1021) and a filter conveying pipeline (1023), one end of the filter exhaust pipeline (1021) far away from the suction filter (1022) is communicated with the inside of a furnace nose (1) near the furnace nose (1) close to an annealing furnace, and one end of the filter conveying pipeline (1023) far away from the suction filter (1022) is connected with a zinc ash hopper (1025).
5. The zinc dust treatment device for the nose of the continuous hot galvanizing furnace according to the claim 1, wherein: the furnace nose inside wall (1010) is arranged on the upper surface and the lower surface of the strip steel (2) in a staggered manner and is provided with a plurality of plate-type zinc ash suction devices (101), and the distance from the plate-type zinc ash suction devices (101) on the upper surface of the strip steel (2) to the upper surface of the strip steel (2) is equal to the distance from the plate-type zinc ash suction devices (101) on the lower surface of the strip steel (2) to the lower surface of the strip steel (2).
6. The zinc dust treatment device for the nose of the continuous hot galvanizing furnace according to the claim 1, wherein: a suction balance cavity (1013) is arranged among the first suction chamber (1015), the second suction chamber (1016) and the third suction chamber (1018), reinforcing ribs (1017) penetrating through the plate type zinc ash suction device (101) are arranged on the suction balance cavity (1013), and the reinforcing ribs (1017) are perpendicular to the inner side wall (1010) of the furnace nose.
7. The zinc dust treatment device for the nose of the continuous hot galvanizing furnace according to the claim 6, wherein: the reinforcing ribs (1017) are two partition plates which separate a transition region (1026) parallel to the strip steel (2) from the third suction cavity (1018).
8. The zinc dust treatment device for the nose of the continuous hot galvanizing furnace according to the claim 1, wherein: the outer side wall of the furnace nose (1) is provided with a furnace nose external vibrator (1011).
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| CN202011038292.XA CN112143998A (en) | 2020-09-28 | 2020-09-28 | Nose zinc ash treatment device of continuous hot galvanizing furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011038292.XA CN112143998A (en) | 2020-09-28 | 2020-09-28 | Nose zinc ash treatment device of continuous hot galvanizing furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106367A (en) * | 2021-04-16 | 2021-07-13 | 重庆贻晨兴工业设计有限责任公司 | Automatic device for collecting zinc ash and use method thereof |
| CN113173275A (en) * | 2021-04-16 | 2021-07-27 | 重庆贻晨兴工业设计有限责任公司 | Automatic device for collecting, separating and packaging zinc ash and using method thereof |
| CN117966067A (en) * | 2024-04-02 | 2024-05-03 | 上海东新冶金技术工程有限公司 | Heating mechanism for hot galvanizing furnace nose |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202830136U (en) * | 2012-05-24 | 2013-03-27 | 河北钢铁股份有限公司邯郸分公司 | Device for eliminating zinc ash and restraining formation of zinc ash inside hot galvanizing furnace nose |
| CN206768198U (en) * | 2017-06-01 | 2017-12-19 | 浙江协和陶瓷有限公司 | Pretreating device is dried in a kind of galvanizing |
| CN108624832A (en) * | 2018-07-10 | 2018-10-09 | 河北首燕机械股份有限公司 | Inhibit and remove zinc gray device in hot galvanizing furnace nose |
| CN111500961A (en) * | 2020-05-27 | 2020-08-07 | 宝钢工程技术集团有限公司 | Device for improving cleanliness of atmosphere in furnace nose and using method thereof |
| CN214142496U (en) * | 2020-09-28 | 2021-09-07 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Nose zinc ash treatment device of continuous hot galvanizing furnace |
-
2020
- 2020-09-28 CN CN202011038292.XA patent/CN112143998A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202830136U (en) * | 2012-05-24 | 2013-03-27 | 河北钢铁股份有限公司邯郸分公司 | Device for eliminating zinc ash and restraining formation of zinc ash inside hot galvanizing furnace nose |
| CN206768198U (en) * | 2017-06-01 | 2017-12-19 | 浙江协和陶瓷有限公司 | Pretreating device is dried in a kind of galvanizing |
| CN108624832A (en) * | 2018-07-10 | 2018-10-09 | 河北首燕机械股份有限公司 | Inhibit and remove zinc gray device in hot galvanizing furnace nose |
| CN111500961A (en) * | 2020-05-27 | 2020-08-07 | 宝钢工程技术集团有限公司 | Device for improving cleanliness of atmosphere in furnace nose and using method thereof |
| CN214142496U (en) * | 2020-09-28 | 2021-09-07 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Nose zinc ash treatment device of continuous hot galvanizing furnace |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106367A (en) * | 2021-04-16 | 2021-07-13 | 重庆贻晨兴工业设计有限责任公司 | Automatic device for collecting zinc ash and use method thereof |
| CN113173275A (en) * | 2021-04-16 | 2021-07-27 | 重庆贻晨兴工业设计有限责任公司 | Automatic device for collecting, separating and packaging zinc ash and using method thereof |
| CN113106367B (en) * | 2021-04-16 | 2023-02-21 | 徐州瑞马智能技术有限公司 | Automatic device for collecting zinc ash and use method thereof |
| CN113173275B (en) * | 2021-04-16 | 2023-02-28 | 徐州瑞马智能技术有限公司 | Using method of automatic device for collecting, separating and packaging zinc ash |
| CN117966067A (en) * | 2024-04-02 | 2024-05-03 | 上海东新冶金技术工程有限公司 | Heating mechanism for hot galvanizing furnace nose |
| CN117966067B (en) * | 2024-04-02 | 2024-06-11 | 上海东新冶金技术工程有限公司 | Heating mechanism for hot galvanizing furnace nose |
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