CN114231877B - Hot galvanizing air knife body structure - Google Patents
Hot galvanizing air knife body structure Download PDFInfo
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- CN114231877B CN114231877B CN202111599483.8A CN202111599483A CN114231877B CN 114231877 B CN114231877 B CN 114231877B CN 202111599483 A CN202111599483 A CN 202111599483A CN 114231877 B CN114231877 B CN 114231877B
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- knife body
- air
- cutter body
- support
- body support
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- 238000005246 galvanizing Methods 0.000 title claims abstract description 28
- 238000003825 pressing Methods 0.000 claims description 5
- 230000010485 coping Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 9
- 239000011701 zinc Substances 0.000 description 9
- 229910052725 zinc Inorganic materials 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- 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
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
-
- 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
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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 hot galvanizing air knife body structure relates to the field of metallurgical equipment. The hot galvanizing air knife body structure comprises a tubular air knife body, an upper knife body support, a lower knife body support, an upper knife body, a lower knife body and two end face cover plates for sealing the end parts of the air knife body, wherein the air knife body is provided with an opening extending along the length direction of the air knife body and a plurality of air inlet pipelines communicated with the inside of the air knife body, the upper knife body support and the lower knife body support are respectively positioned at two sides of the opening and are connected with the air knife body, the upper knife body and the lower knife body are respectively connected to one side of the upper knife body support and the lower knife body support, which are adjacent, and are configured to move towards the directions approaching to or away from each other to adjust an air outlet gap, the upper knife body and the lower knife body are respectively provided with an upper knife body air inlet cambered surface and a lower knife body air inlet cambered surface, and an air homogenizing cavity which is communicated with the air outlet gap and inside the air knife body is formed between the upper knife body air inlet cambered surface and the lower knife body air inlet cambered surface. The hot galvanizing air knife body structure is convenient to adjust the size of the air outlet gap and is used for coping the upper knife body and the lower knife body, and the cost is reduced.
Description
Technical Field
The application relates to the field of metallurgical equipment, in particular to a hot galvanizing air knife body structure.
Background
In the continuous hot galvanizing production line of the strip steel, a blowing device (short for air knife) with a specific structure is required to generate high-speed air flow, and redundant zinc liquid on the surface of the strip steel which is just discharged from the zinc pot is reversely scraped back to the zinc pot. However, in the production process, impurities in zinc slag or gas can wear the lip of the air knife due to continuous long-term use of the air knife, so that the air flow is abnormal, and the normal operation of the production process is affected.
In order to control the quality of galvanized products, the knife lips are required to be inspected and polished frequently, the knife lips are generally in a curved surface structure, the polishing difficulty is high after the knife lips are worn, the knife body is required to be integrally replaced when the knife lips are severe, meanwhile, the air knives above the high-temperature zinc liquid are arranged, the knife lips are subjected to thermal strain due to structural design reasons, the gap between the knife lips is required to be periodically adjusted, and when the conventional air knives are inspected and adjusted, the knife body structure is required to be integrally removed, the alignment recovery difficulty of the upper knife lips and the lower knife lips is high, and the lifting, adjusting and installing periods are long, so that the production cost is too high.
Disclosure of Invention
The utility model aims at providing a hot galvanizing air knife body structure, its size that can conveniently adjust the clearance of giving vent to anger, and repeatable coping goes up the knife body and uses with lower knife body, has reduced spare part expense cost.
Embodiments of the present application are implemented as follows:
the embodiment of the application provides a hot galvanizing air knife body structure, it includes tubular air knife body, go up the cutter body support, lower cutter body support, go up the cutter body, lower cutter body and two terminal surface apron, one side of air knife body is equipped with the opening of extending along its length direction, the opposite side of air knife body is equipped with a plurality of air inlet pipes rather than inside intercommunication, go up cutter body support and lower cutter body support and be located open-ended both sides and with air knife body coupling respectively, go up cutter body and lower cutter body and connect respectively in last cutter body support and lower cutter body support adjacent one side and be configured into can be to being close to each other or keep away from each other the direction removal, go up cutter body and lower cutter body between form the clearance of giving vent to anger, go up cutter body and lower cutter body are equipped with last cutter body air inlet cambered surface and lower cutter body air inlet cambered surface respectively, form the intercommunication clearance of giving vent to anger between last cutter body air inlet cambered surface and the inside air chamber of lower cutter body, the air chamber reduces gradually along with being close to the clearance of giving vent to anger, every terminal surface apron all connects and seals the air knife body, go up cutter body support and lower cutter body support's one end.
In some alternative embodiments, the adjacent sides of the upper cutter body support and the lower cutter body support are respectively sunken to form a chute, the upper cutter body and the lower cutter body are respectively arranged in the chute in a sliding manner, the upper cutter body support and the lower cutter body support are respectively connected with the upper cutter body and the lower cutter body through a plurality of cutter body adjusting bolts, and the cutter body adjusting bolts drive the corresponding upper cutter body and lower cutter body to move towards or away from each other when rotating.
In some alternative embodiments, the upper cutter body support and the lower cutter body support are respectively provided with an adjusting hole for the corresponding cutter body adjusting bolt to pass through, and an adjusting nut sleeved on the corresponding cutter body adjusting bolt through threads is arranged in the adjusting hole.
In some alternative embodiments, one side of the upper cutter body support and the lower cutter body support, which is far away from the air cutter body, is respectively provided with a plurality of strip-shaped fixing holes, each fixing hole is provided with a cutter body fastening bolt passing through the fixing holes, one end of each cutter body fastening bolt passes through the upper cutter body or the lower cutter body through threads, and the other end of each cutter body fastening bolt is connected with the corresponding upper cutter body support or the lower cutter body support.
In some alternative embodiments, an arc-shaped air homogenizing filter screen is arranged inside the air knife body, and the air homogenizing filter screen divides the air knife body into an air outlet cavity communicated with the air homogenizing cavity and an air inlet cavity communicated with the air inlet pipeline.
In some alternative embodiments, the ends of the upper blade body and the lower blade body adjacent to each other are raised away from the end of the air blade body to form a blade body securing boss.
In some alternative embodiments, the side of the upper cutter body support and the lower cutter body support, which is far away from the air cutter body, is provided with a plurality of finger-shaped pressing plates which are abutted against the corresponding cutter body fixing bosses.
In some alternative embodiments, the sides of the upper and lower blade bodies adjacent form upper and lower blade body lips arranged in parallel.
The beneficial effects of this application are: the utility model provides a hot galvanizing air knife body structure includes tubular air knife body, go up the cutter body support, lower cutter body support, go up the cutter body, lower cutter body and two terminal surface apron, one side of air knife body is equipped with the opening that extends along its length direction, the opposite side of air knife body is equipped with a plurality of air inlet pipes rather than inside intercommunication, go up cutter body support and lower cutter body support and be located open-ended both sides respectively and be connected with the air knife body, go up cutter body and lower cutter body and connect respectively in last cutter body support and lower cutter body support adjacent one side and be configured into can be to being close to each other or keep away from each other the direction removal, go up the cutter body and form the clearance of giving vent to anger down between the cutter body, go up cutter body and lower cutter body and be equipped with last cutter body air inlet cambered surface and lower cutter body air inlet cambered surface respectively, form the intercommunication clearance of giving vent to anger between last cutter body air inlet cambered surface and the lower cutter body air inlet cambered surface and the inside air chamber of air chamber, the air chamber reduces gradually along with being close to the clearance of giving vent to anger, every terminal surface apron all connects and seals the one end of air knife body support and lower cutter body support. The hot galvanizing air knife body structure provided by the application is convenient to adjust the size of the air outlet gap, and the upper knife body and the lower knife body can be repeatedly polished for use, so that the spare part cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a first view angle of a hot galvanizing air knife body structure according to an embodiment of the present application;
fig. 2 is a schematic structural view of a second view angle of a hot galvanizing air knife body structure according to an embodiment of the present application;
FIG. 3 is a cross-sectional view taken along section line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along section line B-B of FIG. 2;
fig. 5 is a schematic structural diagram of an upper cutter body support and a lower cutter body support in a hot galvanizing air cutter body structure provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of an upper cutter body and a lower cutter body in the hot galvanizing air knife body structure provided in the embodiment of the application.
In the figure: 100. an air knife body; 110. an upper cutter body bracket; 120. a lower cutter body bracket; 130. an upper cutter body; 140. a lower cutter body; 150. an end face cover plate; 160. an opening; 170. an air intake duct; 180. an air outlet gap; 190. an air inlet cambered surface of the upper cutter body; 200. an air inlet cambered surface of the lower cutter body; 210. an air equalizing cavity; 220. a chute; 230. a cutter body adjusting bolt; 240. an adjustment aperture; 250. an adjusting nut; 260. a fixing hole; 270. a cutter body fastening bolt; 280. a gas equalizing filter screen; 281. a gas equalizing filter hole; 290. an air outlet cavity; 300. an air inlet cavity; 310. a cutter body fixing boss; 320. a finger-shaped pressing plate; 330. a knife lip of the upper knife body; 340. a lower cutter body cutter lip; 350. a first threaded hole; 360. a second threaded hole; 370. and a third threaded hole.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The features and properties of the hot dip galvanizing air knife body structure of the present application are described in further detail below in conjunction with the examples.
As shown in fig. 1, 2, 3, 4, 5 and 6, the embodiment of the present application provides a hot galvanizing air knife body structure, which includes a tubular air knife body 100, an upper knife body support 110, a lower knife body support 120, an upper knife body 130, a lower knife body 140 and two end cover plates 150, one side of the air knife body 100 is provided with an opening 160 extending along the length direction thereof, the other side of the air knife body 100 is provided with five air inlet pipes 170 arranged at intervals along the length direction thereof, the air inlet pipes 170 are communicated with the inside of the air knife body 100, the upper knife body support 110 and the lower knife body support 120 are respectively located at two sides of the opening 160 and are connected with the air knife body 100, the upper knife body 130 and the lower knife body 140 are respectively connected to one side adjacent to the upper knife body support 110 and the lower knife body support 120 and are configured to be movable towards each other towards or away from each other, and each end cover plate 150 is respectively connected with one end of the air knife body 100, the upper knife body support 110 and the lower knife body support 120 and one end of the other is sealed.
An air outlet gap 180 is formed between the upper cutter body 130 and the lower cutter body 140, the upper cutter body 130 and the lower cutter body 140 are respectively provided with an upper cutter body air inlet cambered surface 190 and a lower cutter body air inlet cambered surface 200, an air homogenizing cavity 210 which is communicated with the air outlet gap 180 and the inside of the air cutter body 100 is formed between the upper cutter body air inlet cambered surface 190 and the lower cutter body air inlet cambered surface 200, the air homogenizing cavity 210 gradually decreases along with the approach of the air outlet gap 180, an arc-shaped air homogenizing filter screen 280 is arranged inside the air cutter body 100, the air homogenizing filter screen 280 divides the inside of the air cutter body 100 into an air outlet cavity 290 communicated with the air homogenizing cavity 210 and an air inlet cavity 300 communicated with the air inlet pipeline 170, and air homogenizing filter holes 281 are formed in the air homogenizing filter screen 280. The adjacent sides of the upper cutter body support 110 and the lower cutter body support 120 are respectively sunken to form a chute 220, the upper cutter body support 130 and the lower cutter body support 140 are respectively arranged in the chute 220 in a sliding mode, the upper cutter body support 110 and the lower cutter body support 120 are respectively connected with the upper cutter body 130 and the lower cutter body 140 through six cutter body adjusting bolts 230, when the cutter body adjusting bolts 230 rotate, the corresponding upper cutter body 130 and the lower cutter body 140 are driven to move towards or away from each other, the six cutter body adjusting bolts 230 are respectively arranged at intervals along the length direction of the corresponding upper cutter body 130 and the lower cutter body 140, the upper cutter body support 110 and the lower cutter body support 120 are respectively provided with adjusting holes 240 for the corresponding cutter body adjusting bolts 230 to pass through, adjusting nuts 250 sleeved on the corresponding cutter body adjusting bolts 230 through threads are arranged in the adjusting holes 240, first threaded holes 350 connected with the corresponding cutter body adjusting bolts 230 are respectively arranged on the upper cutter body 130 and the lower cutter body 140, the cutter body adjusting bolts 230 are slotted cylindrical headless bolts, and the adjusting nuts 250 are hexagonal cylindrical headless inner and outer threaded sleeves.
The side of the upper cutter body support 110 and the lower cutter body support 120, which are far away from the air cutter body 100, are respectively provided with ten strip-shaped fixing holes 260, the fixing holes 260 are arranged at intervals along the length direction of the corresponding upper cutter body support 110 and the lower cutter body support 120, the side of the upper cutter body support 110 and the lower cutter body support 120, which are close to the air cutter body 100, are respectively provided with second threaded holes 360 corresponding to the fixing holes 260, each fixing hole 260 is provided with a cutter body fastening bolt 270 passing through the fixing hole 260, the upper cutter body 130 and the lower cutter body 140 are respectively provided with a third threaded hole 370 corresponding to the fixing hole 260, and each cutter body fastening bolt 270 sequentially passes through the fixing hole 260 and is connected with the third threaded hole 370 corresponding to the upper cutter body 130 or the lower cutter body 140 and the second threaded hole 360 corresponding to the upper cutter body support 110 or the lower cutter body support 120; the adjacent ends of the upper cutter body 130 and the lower cutter body 140 are far away from the air cutter body 100 to form a cutter body fixing boss 310 in a protruding mode, thirty toothed finger-shaped pressing plates 320 which are pressed against the corresponding cutter body fixing boss 310 are arranged on one sides of the upper cutter body support 110 and the lower cutter body support 120 far away from the air cutter body 100, the thirty finger-shaped pressing plates 320 are arranged at intervals along the length direction corresponding to the upper cutter body support 110 and the lower cutter body support 120, and an upper cutter body cutter lip 330 and a lower cutter body cutter lip 340 which are arranged in parallel are formed on the adjacent sides of the upper cutter body 130 and the lower cutter body 140.
When the hot galvanizing air knife body structure provided in this embodiment is used, air is introduced into the air inlet cavity 300 in the air knife body 100 through the air inlet pipeline 170, and after the air enters the air homogenizing cavity 210 through the air homogenizing filter holes 281 on the arc air homogenizing filter screen 280 via the air outlet cavity 290, finally, the redundant zinc liquid on the surface of the strip steel just discharged from the zinc pot is blown back to the zinc pot through the air outlet gap 180 formed between the upper knife body 130 and the lower knife body 140, after the upper knife body 130 and the lower knife body 140 are worn and polished on the adjacent sides of the upper knife body lip 330 and the lower knife body lip 340 after long-term use, the size of the air outlet gap 180 can be adjusted to a preset value by adjusting the relative positions of the upper knife body 130 and the lower knife body 140, so that the hot galvanizing air knife body structure is convenient to carry out: rotating the cutter body fastening bolts 270 respectively passing through the upper cutter body 130 and the lower cutter body 140, so that each cutter body fastening bolt 270 moves axially to be separated from the corresponding second threaded holes 360 on the upper cutter body bracket 110 and the lower cutter body bracket 120, thereby releasing the fastening locking of each cutter body fastening bolt 270 to the upper cutter body 130 and the lower cutter body 140, then rotating the adjusting nuts 250 sleeved on the cutter body adjusting bolts 230 to drive the cutter body adjusting bolts 230 to rotate, so that the upper cutter body 130 and the lower cutter body 140 sleeved on the cutter body adjusting bolts 230 through threads move along the corresponding cutter body adjusting bolts 230, so that the upper cutter body 130 and the lower cutter body 140 respectively move in the sliding grooves 220 of the upper cutter body bracket 110 and the lower cutter body bracket 120 in the mutually approaching direction, the size of the air outlet gap 180 formed between the upper blade body lips 330 and 340 of the upper and lower blade bodies 130 and 140 after the trimming is adjusted to a preset value, and then the respective blade body fastening bolts 270 are moved along the third screw holes 370 on the upper and lower blade bodies 130 and 140 and the fixing holes 260 on the upper and lower blade body holders 110 and 120 so that the respective blade body fastening bolts 270 are realigned to the corresponding second screw holes 360, and the respective blade body fastening bolts 270 are reversely rotated so as to be reinserted and connected into the corresponding second screw holes 360, thereby fastening and locking the upper and lower blade bodies 130 and 140 again by the respective blade body fastening bolts 270, and completing the size adjustment of the air outlet gap 180 formed between the upper and lower blade body lips 330 and 340 of the upper and lower blade bodies 130 and 140. The hot galvanizing air knife body structure provided by the embodiment has the advantages that the knife body structure is thick and reliable, the thermal deformation is small when the hot galvanizing air knife body structure is influenced by the high temperature of a zinc pot, the upper knife body lips 330 and the lower knife body lips 340 of the upper knife body 130 and the lower knife body 140 are machined and manufactured conveniently and can be repeatedly polished and used by adopting a planar structure, and the spare part cost is low; the air knife body 100 adopts a plurality of air inlet pipelines 170 and an air equalizing filter screen 280 structure to redistribute the flow in multiple stages, and plays a role in energy storage and pressure stabilization on the air flow; the air equalizing cavity 210 which is formed between the upper cutter body air inlet cambered surface 190 and the lower cutter body air inlet cambered surface 200 and gradually reduces along with the approach of the air outlet gap 180 is beneficial to reducing flow field turbulence, and further improves the stability of pressure and flow during gas blowing. When the air outlet gap 180 is adjusted, only the inner hexagonal cylindrical headless inner and outer tooth screw sleeve is required to be adjusted, the whole air knife body 100 is not required to be disassembled, and the production time is influenced to be short.
The embodiments described above are some, but not all, of the embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Claims (7)
1. The hot galvanizing air knife body structure is characterized by comprising a tubular air knife body, an upper knife body support, a lower knife body support, an upper knife body, a lower knife body and two end cover plates, wherein one side of the air knife body is provided with an opening extending along the length direction of the air knife body, the other side of the air knife body is provided with a plurality of air inlet pipelines communicated with the inside of the air knife body, the upper knife body support and the lower knife body support are respectively positioned at two sides of the opening and are connected with the air knife body, the upper knife body and the lower knife body are respectively connected with one side of the upper knife body support and one side of the lower knife body support, which are adjacent to each other, and are configured to move towards directions approaching to each other or away from each other, an air outlet gap is formed between the upper knife body and the lower knife body, an upper knife body air inlet cambered surface and a lower knife body air inlet cambered surface are respectively formed, the air inlet gap and the air inlet cambered surface of the lower knife body are communicated with each other, and the air cavity is gradually reduced along with the air outlet of the upper knife body and the lower knife body, and each air cavity is gradually reduced along with the air outlet cavity and the air cavity is closed by the air cavity support; the upper cutter body support and one side adjacent to the lower cutter body support are respectively sunken to form a chute, the upper cutter body and the lower cutter body are respectively arranged in the chute in a sliding mode, the upper cutter body support and the lower cutter body support are respectively connected with the upper cutter body and the lower cutter body through a plurality of cutter body adjusting bolts, and the cutter body adjusting bolts are rotated to drive the corresponding upper cutter body and the lower cutter body to move towards directions approaching to or away from each other.
2. The hot galvanizing air knife body structure according to claim 1, wherein the upper knife body support and the lower knife body support are respectively provided with an adjusting hole through which the corresponding knife body adjusting bolt passes, and an adjusting nut sleeved on the corresponding knife body adjusting bolt through threads is arranged in the adjusting hole.
3. The hot galvanizing air knife body structure according to claim 1, wherein one side of the upper knife body support and the lower knife body support, which is far away from the air knife body, is respectively provided with a plurality of strip-shaped fixing holes, each fixing hole is provided with a knife body fastening bolt passing through the fixing holes, one end of each knife body fastening bolt penetrates through the upper knife body or the lower knife body through threads, and the other end of each knife body fastening bolt is connected with the corresponding upper knife body support or lower knife body support.
4. The hot galvanizing air knife body structure according to claim 1, wherein an arc-shaped air homogenizing filter screen is arranged inside the air knife body, and the air homogenizing filter screen divides the air knife body into an air outlet cavity communicated with the air homogenizing cavity and an air inlet cavity communicated with the air inlet pipeline.
5. The hot dip galvanizing air knife body structure according to claim 1, wherein the ends of the upper knife body and the lower knife body adjacent to each other are away from the air knife body, and a knife body fixing boss is formed by protruding from one end of the air knife body.
6. The hot galvanizing air knife body structure according to claim 5, wherein a plurality of finger-shaped pressing plates which are abutted against the corresponding knife body fixing bosses are arranged on one side of the upper knife body support and one side of the lower knife body support, which are far away from the air knife body.
7. The hot dip galvanizing air knife body structure according to claim 1, wherein the upper knife body and the lower knife body are formed with upper knife body lips and lower knife body lips arranged in parallel on adjacent sides thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111599483.8A CN114231877B (en) | 2021-12-24 | 2021-12-24 | Hot galvanizing air knife body structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111599483.8A CN114231877B (en) | 2021-12-24 | 2021-12-24 | Hot galvanizing air knife body structure |
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| CN114231877A CN114231877A (en) | 2022-03-25 |
| CN114231877B true CN114231877B (en) | 2024-01-16 |
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| CN115433894B (en) * | 2022-08-15 | 2024-01-16 | 武汉钢铁有限公司 | Air knife with improved air cavity structure |
| CN115537700B (en) * | 2022-08-30 | 2024-04-23 | 武汉钢铁有限公司 | Air knife |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05138078A (en) * | 1991-11-18 | 1993-06-01 | Kawasaki Steel Corp | Jet speed adjustable slit nozzle |
| JPH08337863A (en) * | 1995-06-09 | 1996-12-24 | Kawasaki Steel Corp | Wiping method and device for hot dip metal coating |
| KR20020047352A (en) * | 2000-12-13 | 2002-06-22 | 이구택 | Air knife for preventing a variation of air pressure in strip width direction |
| KR20040110831A (en) * | 2003-06-20 | 2004-12-31 | 주식회사 포스코 | An air knife for coating the strip |
| WO2016105047A1 (en) * | 2014-12-26 | 2016-06-30 | 주식회사 포스코 | Apparatus for removing top dross of plating pot |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5229918B2 (en) * | 2006-06-05 | 2013-07-03 | ポスコ | Gas wiping device |
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2021
- 2021-12-24 CN CN202111599483.8A patent/CN114231877B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05138078A (en) * | 1991-11-18 | 1993-06-01 | Kawasaki Steel Corp | Jet speed adjustable slit nozzle |
| JPH08337863A (en) * | 1995-06-09 | 1996-12-24 | Kawasaki Steel Corp | Wiping method and device for hot dip metal coating |
| KR20020047352A (en) * | 2000-12-13 | 2002-06-22 | 이구택 | Air knife for preventing a variation of air pressure in strip width direction |
| KR20040110831A (en) * | 2003-06-20 | 2004-12-31 | 주식회사 포스코 | An air knife for coating the strip |
| WO2016105047A1 (en) * | 2014-12-26 | 2016-06-30 | 주식회사 포스코 | Apparatus for removing top dross of plating pot |
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| CN114231877A (en) | 2022-03-25 |
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