CN104451503A - High-precision energy-saving galvanized air knife - Google Patents
High-precision energy-saving galvanized air knife Download PDFInfo
- Publication number
- CN104451503A CN104451503A CN201410828396.9A CN201410828396A CN104451503A CN 104451503 A CN104451503 A CN 104451503A CN 201410828396 A CN201410828396 A CN 201410828396A CN 104451503 A CN104451503 A CN 104451503A
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- CN
- China
- Prior art keywords
- air
- cavity
- face
- zinc
- knife
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C23C2/14—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
Abstract
The invention discloses a high-precision energy-saving galvanized air knife. The high-precision energy-saving galvanized air knife comprises an upper knife piece and a lower knife piece, a lip cavity is formed between the upper knife piece and the lower knife piece, and air can be sprayed outwards from the lip cavity; the tail end of the lip cavity is connected with a stripe-shaped distributing hole, and air is pumped into the lip cavity via the stripe-shaped distributing hole; the stripe-shaped distributing hole is communicated with a first air cavity, and air flows inside the first air cavity are input into the stripe-shaped distributing hole; a second air cavity is arranged inside the first air cavity and provided with a plurality of rows of airflow distributing holes, and the air input into the second air cavity can be input into the first air cavity via the airflow distributing holes. According to the high-precision energy-saving galvanized air knife, by changing the structures of the air cavities and the air distributing manners, the pressure stability can be enhanced and the pressure distribution non-uniformity can be reduced; by increasing the length of the straight section of knife lips, the proportion of laminar air flows can be enhanced, and airflow scattering can be reduced, and the use performance of the air knife can be improved.
Description
Technical field
The present invention relates to a kind of air knife, specifically the zinc-plated air knife of a kind of high-accuracy energy-saving.
Background technology
Hot-dip galvanized steel strip production line all adopts the thickness of air knife control cincture steel galvanizing layer, after steel plate carries out pot galvanize by the zinc liquid in zinc pot, need the zinc liquid of the ejection pressurized air of the air knife above by zinc pot to the surface of steel plate to blow to penetrate, thus control the thickness of surface of steel plate zinc coating, thus ensure the quality of lvanized cold rolled strip.
The air knife of current use is due to its structural performance, and the laminar flow composition of air-flow is less, the basic ejection in divergent state, and scraping abilities is poor, and flash plating coating amount is difficult to accurately control, not energy-conservation.Blow gas pressure is skewness in the direction of the width, when producing slab or thicker zinc-plated amount, easily causes edge excessively zinc-plated.Air pressure stationarity is poor, plate face coating became uneven, limit product quality-improving.
Summary of the invention
Technical problem to be solved by this invention is to provide the zinc-plated air knife of a kind of high-accuracy energy-saving, and the gaseous tension of this air knife is steady, and blow gas pressure is evenly distributed at width
In order to solve the problems of the technologies described above, the present invention improves gas flow characteristic by the different air cavity structure of exploitation and distribution of air flow mode, concrete technical scheme is: the zinc-plated air knife of a kind of high-accuracy energy-saving, comprise cutter and lower blade, lip chamber is formed between cutter and lower blade, gas outwards sprays from lip chamber, the end in described lip chamber is connected with rectangular dispensing orifice, by passing into gas in rectangular dispensing orifice labiad oral cavity, described rectangular dispensing orifice communicates with the first air cavity, air-flow in first air cavity passes into rectangular dispensing orifice, the second air cavity is provided with in described first air cavity, described second air cavity is provided with some evacuation circuit dispensing orifices, the gas passing into the second air cavity passes in the first air cavity through distribution of air flow hole.
The present invention adopts triple air cavity structure, is conducive to improving air pressure and is evenly distributed at width.
As preferably, described second air cavity is circular, and some evacuation circuit dispensing orifices are evenly arranged on the second air cavity.
Described rectangular dispensing orifice is arranged on the top in lip chamber.
The interface in described lip chamber is taper.
In the air outlet in lip chamber, the cutter end face and the lower blade end face that form lip chamber have flat segments respectively, and the flat segments of cutter end face and the flat segments of lower blade end face form the horizontal air outlet in lip chamber.The flat segments of described lower blade end face is greater than the flat segments of cutter end face.
The flat segments length of described cutter end face is greater than 5mm, and the flat segments length of lower blade end face is greater than 90mm, and the flat segments length of preferred cutter end face is 10mm, and the flat segments length of lower blade end face is 110mm.Such design, the velocity reversal of air-flow inside and size are unified forward, and reduce turbulent flow, minimizing is dispersed, and promotes and strikes off power.
In order to improve the first air cavity pressure stability, the total area in described distribution of air flow hole is greater than the area of rectangular dispensing orifice.
The present invention increases pressure stability and reduces pressure distribution uneven by change air cavity structure, distribution of air flow mode, by increasing cutter lip position flat segments length, increasing the laminar flow composition of air-flow, reducing airflow diverges, improving air knife use properties.Beneficial effect is:
(1) promote coating control accuracy, improve the horizontal coating homogeneity in plate face, plate face quality is promoted;
(2) blow gas pressure is evenly distributed at width, when producing slab or thicker zinc-plated amount, edge can not be caused excessively zinc-plated, reduces zinc ingot metal usage quantity, reduces production cost;
(3) air pressure stationarity is good, and plate face coating thickness is even, and increase and scrape zinc ability, air knife system is more energy-conservation.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the present invention first air cavity schematic diagram.
Fig. 2 is air knife structural representation of the present invention.
Fig. 3 is cutter of the present invention and lower blade position schematic diagram.
Fig. 4 is air knife of the present invention assembling schematic diagram.
Embodiment
As shown in Figure 1, the first cavity 4 of air knife of the present invention is surrounded by cavity plate 1, cavity plate 22 and cavity plate 33, cavity plate 22 is provided with ventilating pit 5.As shown in Figure 2, in the first cavity 4, be provided with circular second cavity 6, second cavity 6 be not limited to circle, but circular effect is better.Second cavity 6 arranges an evacuation circuit dispensing orifice 7 every 90 °, four rows are set altogether, after air-flow passes into the second cavity 6, to enter in the first cavity 4 along distribution of air flow hole 7.
Below cavity plate 22, be provided with cutter 8 and lower blade 9, cutter 8 and lower blade 9 are linked together by bolt 10, and the cutter 8 linked together, lower blade 9 are fixed on cavity plate 22 by screw 11.Lip chamber 12 is formed, for outwards being sprayed by gas between cutter 8 and lower blade 9 end face.Lip chamber 12 is taper (not being defined as taper), and cutter 8 has rectangular dispensing orifice 13, and the end that rectangular dispensing orifice 13 is positioned at lip chamber 12 communicates with lip chamber 12.Rectangular dispensing orifice 12 is corresponding with the ventilating pit 5 on cavity plate 22, thus makes the gas of in the first air cavity 4 pass into lip chamber 12.In order to improve the first air cavity 4 pressure stability, the total area in distribution of air flow hole 7 is greater than the area of rectangular dispensing orifice 13.
In the air outlet in lip chamber 12, as shown in Figure 3, cutter 8 end face and lower blade 9 end face that form lip chamber 12 have flat segments respectively, and the flat segments L1 of cutter 8 end face and the flat segments L2 of lower blade 9 end face forms the horizontal air outlet in lip chamber 12.The flat segments L1 length of cutter 8 end face is greater than 5mm, can be 10mm; The flat segments L2 length of lower blade 9 end face is greater than 90mm, can be 110mm.Cutter 8, the lower blade 9 of air knife are all designed with longer flat segments, and cutter lip direction flat segments length is greater than common air knife, thus the velocity reversal of air-flow inside and size are unified forward, and reduce turbulent flow, minimizing is dispersed, and promotes and strikes off power.
During work, after gas enters square girder 13, circular second air cavity 6 is entered by two segmental bronchuses 14, then (four rows are not limited to by four rows on air cavity wall, can be some rows, some refer to here a row or multi-row) distribution of air flow hole 7 enter first air cavity 4, first air cavity 4 effect be to make pressure equalization, stabilization.The air-flow of the first air cavity 4 enters lip chamber 12 by platoon leader's bar dispensing orifice 13, makes gaseous tension in the further homogenizing of width.
Above-described embodiment does not limit the present invention in any way, and the technical scheme that the mode that every employing is equal to replacement or equivalent transformation obtains all drops in protection scope of the present invention.
Claims (9)
1. the zinc-plated air knife of high-accuracy energy-saving, comprise cutter and lower blade, lip chamber is formed between cutter and lower blade, gas outwards sprays from lip chamber, it is characterized in that: the end in described lip chamber is connected with rectangular dispensing orifice, by passing into gas in rectangular dispensing orifice labiad oral cavity, described rectangular dispensing orifice communicates with the first air cavity, air-flow in first air cavity passes into rectangular dispensing orifice, the second air cavity is provided with in described first air cavity, described second air cavity is provided with some evacuation circuit dispensing orifices, the gas passing into the second air cavity passes in the first air cavity through distribution of air flow hole.
2. the zinc-plated air knife of a kind of high-accuracy energy-saving according to claim 1, is characterized in that: described second air cavity is for circular, and some evacuation circuit dispensing orifices are evenly arranged on the second air cavity.
3. the zinc-plated air knife of a kind of high-accuracy energy-saving according to claim 1, is characterized in that: described rectangular dispensing orifice is arranged on the top in lip chamber.
4. the zinc-plated air knife of a kind of high-accuracy energy-saving according to claim 1, is characterized in that: the interface in described lip chamber is taper.
5. the zinc-plated air knife of a kind of high-accuracy energy-saving according to claim 1 or 4, it is characterized in that: in the air outlet in lip chamber, the cutter end face and the lower blade end face that form lip chamber have flat segments respectively, and the flat segments of cutter end face and the flat segments of lower blade end face form the horizontal air outlet in lip chamber.
6. the zinc-plated air knife of a kind of high-accuracy energy-saving according to claim 5, is characterized in that: the flat segments of described lower blade end face is greater than the flat segments of cutter end face.
7. the zinc-plated air knife of a kind of high-accuracy energy-saving according to claim 5, it is characterized in that: the flat segments length of described cutter end face is greater than 5mm, the flat segments length of lower blade end face is greater than 90mm.
8. the zinc-plated air knife of a kind of high-accuracy energy-saving according to claim 7, is characterized in that: the flat segments length of described cutter end face is 10mm, and the flat segments length of lower blade end face is 110mm.
9. the zinc-plated air knife of a kind of high-accuracy energy-saving according to claim 1, is characterized in that: the total area in described distribution of air flow hole is greater than the area of rectangular dispensing orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410828396.9A CN104451503A (en) | 2014-12-26 | 2014-12-26 | High-precision energy-saving galvanized air knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410828396.9A CN104451503A (en) | 2014-12-26 | 2014-12-26 | High-precision energy-saving galvanized air knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104451503A true CN104451503A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410828396.9A Pending CN104451503A (en) | 2014-12-26 | 2014-12-26 | High-precision energy-saving galvanized air knife |
Country Status (1)
| Country | Link |
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| CN (1) | CN104451503A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723643A (en) * | 2017-11-10 | 2018-02-23 | 常州九天新能源科技有限公司 | A kind of circular air knife |
| CN111164231A (en) * | 2017-09-29 | 2020-05-15 | 日本制铁株式会社 | Method for manufacturing gas wiping nozzle and gas wiping nozzle |
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| CN201144275Y (en) * | 2007-12-27 | 2008-11-05 | 大庆石油学院 | Simple highly-effective multi-group hot dip ring-shaped air knife device |
| CN202510254U (en) * | 2012-01-20 | 2012-10-31 | 陈东森 | Improved structure of air conditioner |
| CN202530141U (en) * | 2012-04-23 | 2012-11-14 | 唐山市佳冠实业有限公司 | Knife body inner cavity structure of air knife for hot-dipped zinc galvanized plate device |
| CN203518155U (en) * | 2013-07-29 | 2014-04-02 | 北京康孚科技股份有限公司 | Displacement-type uniform-air-supply air supply device for air conditioning equipment |
| CN203920685U (en) * | 2014-06-25 | 2014-11-05 | 华创车电技术中心股份有限公司 | Outside mirror head cleaning systems |
| CN204455261U (en) * | 2014-12-26 | 2015-07-08 | 烨辉（中国）科技材料有限公司 | The zinc-plated air knife of a kind of high-accuracy energy-saving |
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2014
- 2014-12-26 CN CN201410828396.9A patent/CN104451503A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201144275Y (en) * | 2007-12-27 | 2008-11-05 | 大庆石油学院 | Simple highly-effective multi-group hot dip ring-shaped air knife device |
| CN202510254U (en) * | 2012-01-20 | 2012-10-31 | 陈东森 | Improved structure of air conditioner |
| CN202530141U (en) * | 2012-04-23 | 2012-11-14 | 唐山市佳冠实业有限公司 | Knife body inner cavity structure of air knife for hot-dipped zinc galvanized plate device |
| CN203518155U (en) * | 2013-07-29 | 2014-04-02 | 北京康孚科技股份有限公司 | Displacement-type uniform-air-supply air supply device for air conditioning equipment |
| CN203920685U (en) * | 2014-06-25 | 2014-11-05 | 华创车电技术中心股份有限公司 | Outside mirror head cleaning systems |
| CN204455261U (en) * | 2014-12-26 | 2015-07-08 | 烨辉（中国）科技材料有限公司 | The zinc-plated air knife of a kind of high-accuracy energy-saving |
Non-Patent Citations (1)
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| 岑耀东: "超薄锌层热镀锌板的研究进展", 《热加工工艺》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111164231A (en) * | 2017-09-29 | 2020-05-15 | 日本制铁株式会社 | Method for manufacturing gas wiping nozzle and gas wiping nozzle |
| CN111164231B (en) * | 2017-09-29 | 2022-05-10 | 日本制铁株式会社 | Method for manufacturing gas wiping nozzle and gas wiping nozzle |
| CN107723643A (en) * | 2017-11-10 | 2018-02-23 | 常州九天新能源科技有限公司 | A kind of circular air knife |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |