CN201770761U - Air knife lip - Google Patents
Air knife lip Download PDFInfo
- Publication number
- CN201770761U CN201770761U CN2010202533493U CN201020253349U CN201770761U CN 201770761 U CN201770761 U CN 201770761U CN 2010202533493 U CN2010202533493 U CN 2010202533493U CN 201020253349 U CN201020253349 U CN 201020253349U CN 201770761 U CN201770761 U CN 201770761U
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- CN
- China
- Prior art keywords
- knife lip
- lip
- air
- knife
- zinc
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an air knife lip. The technical scheme is that: the air knife lip comprises a lower knife lip (1) and an upper knife lip (2) which are matched with each other; one end of the lower knife lip and one end of the upper knife lip are respectively fixed to a knife-roof beam; the other end of the lower knife lip and the other end of the upper knife lip are matched with each other and are provided with a gap; the parts, matched with each other, of the lower knife lip and the upper knife lip are straight structures, called as straight sections (3); and the matching gap between the lower knife lip and the upper knife lip is also a straight gap. When compressed high-pressure air passes through the straight gap, an air stream like a knife is formed; and the air stream intensively travels along the straight sections until contacting a metal strip, so that excess liquid zinc, on the surface of strip steel which is out from a zinc pot, can be scraped to return to the zinc pot. The air knife lip has the advantages that: the structure is simple; the air knife lip is convenient to operate; and a zinc scraping effect and the quality of a galvanized sheet are improved.
Description
Affiliated technical field:
The utility model relates to a kind of air knife lip, especially the zinc layer air knife lip of control band steel pot galvanize.
Background technology
On the galvanizing production line, in order to obtain even, smooth zinc coating, and can freely control zinc coating thickness, from the extensive air knife technology of the using sixties in 20th century.High pressure gas after main pressured the contracting of air knife technology spray to steel band by forming the air-flow as cutter behind the air knife slit, and the unnecessary zinc liquid of the belt steel surface that will come out from the zinc pot scrapes off and flows back to the zinc pot.At present, the air knife upper slitter lip of use is flat, and the lower knife lip mouth makes a shape of upwards colluding, and such structure just makes the actual angle of air-flow of air knife mouth ejection parallel with the bottom surface of air knife lower lip.Because upper knife lip does not almost have flat segments, the ejection of air-flow is divergent state, does not have the laminar flow composition substantially, and the flow velocity of air-flow and velocity pressure are bigger apart from the variable in distance of band steel with lip of air knife.Can influence like this and scrape the zinc effect, limit portion is zinc-plated excessively easily, and plate face band is obvious, can't obtain the ideal zinc coating thickness, influences galvanizing quality.
The utility model content:
The utility model purpose provides a kind of air knife lip, can control the track of air-flow ejection, increases air-flow and concentrates the optimum distance of operation to solve the problems referred to above that exist in the background technology.
The technical solution of the utility model is: a kind of air knife lip, the lower knife lip, the upper knife lip that comprise mutual coupling, one end of lower knife lip and upper knife lip is separately fixed on the cutter beam, the other end mates mutually and has a slit, the part that lower knife lip and upper knife lip mate mutually is a straight structure, be referred to as flat segments, lower knife lip and upper knife lip coupling slit also are straight slit.
Said flat segments length is arbitrarily, determines according to field condition.
Adopt the utility model, after the high pressure gas after the compression pass through the straight slit of air knife, formation is as the air-flow of cutter, and air-flow concentrates operation until contacting with steel band along flat segments, and the unnecessary zinc liquid of belt steel surface that can will come out from the zinc pot scrapes off and flows back to the zinc pot.
The beneficial effects of the utility model are: the high pressure gas after the compression are by forming the uniform air flow as cutter behind the air knife flat segments slit, the unnecessary zinc liquid of the belt steel surface that air-flow will come out from the zinc pot scrapes off and flows back to the zinc pot; Have characteristics simple in structure, easy to operate, improved and scraped zinc effect and galvanized sheet quality.
Description of drawings:
Fig. 1 is the utility model example structure synoptic diagram;
Among the figure: 1. lower knife lip, 2. upper knife lip, 3. flat segments.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
With reference to accompanying drawing 1, a kind of air knife lip, the lower knife lip 1, the upper knife lip 2 that comprise mutual coupling, one end of lower knife lip and upper knife lip is separately fixed on the cutter beam, the other end mates mutually and has the slit, and the part that lower knife lip and upper knife lip mate mutually is a straight structure, is referred to as flat segments 3, lower knife lip and upper knife lip coupling slit also are straight slit, and different parameters is determined by unit speed in the gap of upper and lower lip.Form the air-flow as cutter after the high pressure gas after the compression pass through the air knife slit, air-flow concentrates operation until contacting with steel band along flat segments, and the unnecessary zinc liquid of belt steel surface that can will come out from the zinc pot scrapes off and flows back to the zinc pot.Thereby can also adjust relevant links such as angle, width, height at any time according to thickness of strips, width, unit speed in the unit running process and reach ideal zinc layer effect.
Claims (1)
1. air knife lip, the lower knife lip (1), the upper knife lip (2) that comprise mutual coupling, one end of lower knife lip and upper knife lip is separately fixed on the cutter beam, the other end mates mutually and has a slit, it is characterized in that the part that lower knife lip and upper knife lip mate mutually is a straight structure, be referred to as flat segments (3), lower knife lip and upper knife lip coupling slit also are straight slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202533493U CN201770761U (en) | 2010-07-09 | 2010-07-09 | Air knife lip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202533493U CN201770761U (en) | 2010-07-09 | 2010-07-09 | Air knife lip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201770761U true CN201770761U (en) | 2011-03-23 |
Family
ID=43750600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202533493U Expired - Fee Related CN201770761U (en) | 2010-07-09 | 2010-07-09 | Air knife lip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201770761U (en) |
-
2010
- 2010-07-09 CN CN2010202533493U patent/CN201770761U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20110709 |