JP2017164664A - Air knife device - Google Patents

Air knife device Download PDF

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JP2017164664A
JP2017164664A JP2016049643A JP2016049643A JP2017164664A JP 2017164664 A JP2017164664 A JP 2017164664A JP 2016049643 A JP2016049643 A JP 2016049643A JP 2016049643 A JP2016049643 A JP 2016049643A JP 2017164664 A JP2017164664 A JP 2017164664A
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air
air injection
center line
knife device
distal end
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晃一 二階堂
Koichi Nikaido
晃一 二階堂
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Chugai Ro Co Ltd
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Chugai Ro Co Ltd
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Priority to JP2016049643A priority Critical patent/JP2017164664A/en
Priority to PCT/JP2017/006883 priority patent/WO2017159273A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/24—Arrangements of devices using drying processes not involving heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Drying Of Solid Materials (AREA)
  • Nozzles (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an air knife device improved in performance for removing liquid adhered to a steel belt.SOLUTION: An air knife device 10 is equipped with a first member 1, and a second member 2 opposing to the first member 1 through an air injection passage 3. An inner surface of the first member 1 and an inner surface of the second member 2 opposing to the air injection passage 3, are respectively plane surfaces in parallel with a center axis C of the air injection passage 3. On an outer surface of the first member 1 and an outer surface of the second member 2, tapered surfaces 112 and 212 which are symmetrical with respect to the center axis C are respectively formed from tip ends of tip end portions 11 and 21 forming an air injection port 4 toward base end portions 14 and 24.SELECTED DRAWING: Figure 2

Description

本発明は、鋼帯にエアを吹き付けるエアナイフ装置に関するものである。   The present invention relates to an air knife device that blows air onto a steel strip.

従来、特許文献１〜３に示されるように、熱処理によって鋼帯に付着した水等の液体は、水切りロールとスリット状のノズルを有するエアワイパー（エアナイフ装置）との組み合わせによって除去されるようになっていた。   Conventionally, as shown in Patent Documents 1 to 3, a liquid such as water attached to a steel strip by heat treatment is removed by a combination of a draining roll and an air wiper (air knife device) having a slit-like nozzle. It was.

特開２００９−１１４５３６号公報JP 2009-114536 A 特開平１１−１２７７２号公報Japanese Patent Laid-Open No. 11-12772 特開平７−８８８３号公報JP-A-7-8883

しかし、水切りロールは、鋼帯を両面から挟んで水切りを行うため、ロールが鋼帯に接触し、鋼帯の表面に傷を付ける恐れがある。一方、エアナイフ装置は、鋼帯と非接触であるが、鋼帯に付着した液体の除去能力が十分ではなく、エアナイフ装置のみで鋼帯に付着した液体の除去を行うことは難しかった。   However, since the draining roll performs draining by sandwiching the steel strip from both sides, the roll may come into contact with the steel strip and damage the surface of the steel strip. On the other hand, the air knife device is not in contact with the steel strip, but the ability to remove the liquid adhering to the steel strip is not sufficient, and it is difficult to remove the liquid adhering to the steel strip using only the air knife device.

そこで、本発明は、鋼帯に付着した液体の除去能力を向上させたエアナイフ装置を提供することを目的とする。   Then, an object of this invention is to provide the air knife apparatus which improved the removal capability of the liquid adhering to a steel strip.

本発明は、第１部材と、エア噴射通路を介して前記第１部材と対向する第２部材と、を備えるエアナイフ装置であって、
前記エア噴射通路に対向する前記第１部材の内面及び前記第２部材の内面は、それぞれ、前記エア噴射通路の中心線に平行な平面となっており、
前記第１部材の外面及び前記第２部材の外面には、それぞれ、エア噴射口を形成する先端部の先端から基端部に向けて、前記中心線に対して対称となるテーパ面が形成されていることを特徴とする。 The present invention is an air knife device comprising a first member and a second member facing the first member via an air injection passage,
The inner surface of the first member and the inner surface of the second member facing the air injection passage are respectively flat surfaces parallel to the center line of the air injection passage,
On the outer surface of the first member and the outer surface of the second member, tapered surfaces that are symmetrical with respect to the center line are formed from the distal end portion of the distal end portion that forms the air injection port toward the proximal end portion, respectively. It is characterized by.

前記構成によれば、第１部材の内面及び前記第２部材の内面は、それぞれ、エア噴射通路の中心線に平行な平面となっており、第１部材の外面及び第２部材の外面には、それぞれ、エア噴射通路の中心線に対して対称となるテーパ面が形成されているので、エア噴射通路から噴射されたエア速度の減衰を低減させることができ、エアナイフ装置の水切り性能を向上させることができる。その結果、エアナイフ装置のみで鋼帯の水切りを行うことで、水切りロールを不要とすることができ、水切りロールによって鋼帯の表面に傷を付けることを防止できる。   According to the above configuration, the inner surface of the first member and the inner surface of the second member are respectively flat surfaces parallel to the center line of the air injection passage, and the outer surface of the first member and the outer surface of the second member are In addition, since the taper surface which is symmetrical with respect to the center line of the air injection passage is formed, attenuation of the air velocity injected from the air injection passage can be reduced, and the draining performance of the air knife device is improved. be able to. As a result, by draining the steel strip only with the air knife device, the draining roll can be made unnecessary, and the surface of the steel strip can be prevented from being damaged by the draining roll.

本発明は、更に、次のような構成を備えるのが好ましい。
（１）前記第１部材の先端部及び前記第２部材の先端部は、それぞれ、前記中心線に対して直交する第１先端面及び第２先端面を有しており、
前記第１先端面と前記第２先端面とは、同一平面上に位置している。
（２）前記テーパ面は、前記中心線に対して２０〜４０度傾斜しており、
前記第１部材と前記第２部材との間の距離は、１．５〜２．５ｍｍとなっている。 The present invention preferably further comprises the following configuration.
(1) The distal end portion of the first member and the distal end portion of the second member have a first distal end surface and a second distal end surface orthogonal to the center line, respectively.
The first tip surface and the second tip surface are located on the same plane.
(2) The tapered surface is inclined by 20 to 40 degrees with respect to the center line,
The distance between the first member and the second member is 1.5 to 2.5 mm.

前記構成（１）によれば、第１先端面と第２先端面とが同一平面上に位置しているので、エア噴射口近傍の乱流の発生が抑制され、エア噴射口から噴射されたエア速度の減衰を低減させることができ、エアナイフ装置の水切り性能を向上させることができる。   According to the configuration (1), since the first tip surface and the second tip surface are located on the same plane, generation of turbulent flow in the vicinity of the air injection port is suppressed and the first injection surface is injected from the air injection port. The attenuation of the air speed can be reduced, and the draining performance of the air knife device can be improved.

前記構成（２）によれば、テーパ面がエア噴射通路の中心線に対して所定の角度だけ傾斜しているので、エア噴射口から噴射されたエア速度の減衰をより低減させることができ、エアナイフ装置の水切り性能を向上させることができる。また、第１部材と第２部材との間の距離を所定の範囲内とすることで、エア供給設備を増強させることなく、エアの噴射性を維持しながら、エア噴射圧力を所定以上とすることができ、その結果、エア噴射通路から噴射されるエア速度を増加させることができる。そして、エア速度を増加させることで、エアナイフ装置の水切り性能を向上させることができる。   According to the configuration (2), since the tapered surface is inclined by a predetermined angle with respect to the center line of the air injection passage, attenuation of the air speed injected from the air injection port can be further reduced. The draining performance of the air knife device can be improved. In addition, by setting the distance between the first member and the second member within a predetermined range, the air injection pressure is set to a predetermined value or more while maintaining the air injection performance without increasing the air supply facility. As a result, the air speed injected from the air injection passage can be increased. And the draining performance of an air knife apparatus can be improved by increasing an air speed.

要するに、本発明によると、鋼帯に付着した液体の除去能力を向上させたエアナイフ装置を提供することができる。   In short, according to the present invention, it is possible to provide an air knife device with an improved ability to remove liquid adhering to a steel strip.

本発明の実施形態に係るエアナイフ装置の概略斜視図である。1 is a schematic perspective view of an air knife device according to an embodiment of the present invention. エアナイフ装置の断面拡大図である。It is a cross-sectional enlarged view of an air knife device. テーパ面の有無に対する、エアナイフ装置の先端部から鋼板までの距離とエア速度との関係を示したグラフである。It is the graph which showed the relationship between the distance from the front-end | tip part of an air knife apparatus to a steel plate with respect to the presence or absence of a taper surface, and an air speed.

図１は、本発明の実施形態に係るエアナイフ装置１０の概略斜視図であり、図２は、エアナイフ装置１０の断面拡大図である。図１及び図２に示されるように、エアナイフ装置１０は、第１部材１と、エア噴射通路３を介して第１部材１と対向する第２部材２と、を備えている。   FIG. 1 is a schematic perspective view of an air knife device 10 according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of the air knife device 10. As shown in FIGS. 1 and 2, the air knife device 10 includes a first member 1 and a second member 2 that faces the first member 1 through the air injection passage 3.

第１部材１は、鋼板Ｓにエアを噴射するエア噴射口４を形成する先端部１１と、エア噴射通路３と対向する直線部１２と、直線部１２から折り曲げられて延びる折り曲げ部１３と、折り曲げ部１３から延び、エア供給管（図示せず）と接続され、エアチャンバ５を形成する基端部１４と、を備えている。   The first member 1 includes a front end portion 11 that forms an air injection port 4 that injects air into the steel sheet S, a straight portion 12 that faces the air injection passage 3, a bent portion 13 that is bent and extends from the straight portion 12, A base end portion 14 that extends from the bent portion 13 and is connected to an air supply pipe (not shown) and forms the air chamber 5 is provided.

先端部１１は、エア噴射通路３の中心線Ｃと直交する先端面１１１と、第１部材１の外面であって、先端部１１の先端である先端面１１１から基端部１４に向けて、中心線Ｃに対して傾斜するテーパ面１１２と、第１部材１の内面であって、先端面１１１から基端部１４に向けて、中心線Ｃに平行に延びる先端部内面１１３と、を備えている。   The distal end portion 11 is a distal end surface 111 orthogonal to the center line C of the air injection passage 3 and the outer surface of the first member 1, from the distal end surface 111 that is the distal end of the distal end portion 11 toward the proximal end portion 14. A tapered surface 112 that is inclined with respect to the center line C; and an inner surface of the first member 1, and a distal end inner surface 113 that extends parallel to the center line C from the distal end surface 111 toward the proximal end portion 14. ing.

直線部１２は、第１部材１の外面であって、テーパ面１１２から基端部１４に向けて、中心線Ｃに平行に延びる直線部外面１２１と、先端部内面１１３から基端部１４に向けて、中心線Ｃに平行に延びる直線部内面１２２と、を備えている。なお、先端部内面１１３と直線部内面１２２とは、同一平面上で連続した平面となっている。   The straight portion 12 is the outer surface of the first member 1, and extends from the tapered surface 112 toward the base end portion 14 in parallel to the center line C, and from the tip end inner surface 113 to the base end portion 14. And a straight portion inner surface 122 extending parallel to the center line C. The tip portion inner surface 113 and the straight portion inner surface 122 are continuous planes on the same plane.

第２部材２は、鋼板Ｓにエアを噴射するエア噴射口４を形成する先端部２１と、エア噴射通路３と対向する直線部２２と、直線部２２から折り曲げられて延びる折り曲げ部２３と、折り曲げ部２３から延び、エア供給管（図示せず）と接続され、エアチャンバ５を形成する基端部２４と、を備えている。なお、折り曲げ部１３と折り曲げ部２３とは、中心線Ｃに対して対称となるように、直線部１２又は直線部２２に対して折り曲げられている。具体的には、折り曲げ部１３及び折り曲げ部２３は、折り曲げ部１３と折り曲げ部２３とで形成される空間が基端部１４、２４に向かって拡がるよう、折り曲げられている。また、基端部１４と基端部２４とは、中心線Ｃに対して対称となるように、折り曲げ部１３又は折り曲げ部２３から、中心線Ｃに平行に延びている。   The second member 2 includes a front end portion 21 that forms an air injection port 4 that injects air into the steel sheet S, a straight portion 22 that faces the air injection passage 3, a bent portion 23 that is bent and extends from the straight portion 22. A base end portion 24 that extends from the bent portion 23 and is connected to an air supply pipe (not shown) and forms the air chamber 5 is provided. The bent portion 13 and the bent portion 23 are bent with respect to the straight portion 12 or the straight portion 22 so as to be symmetric with respect to the center line C. Specifically, the bent portion 13 and the bent portion 23 are bent so that a space formed by the bent portion 13 and the bent portion 23 expands toward the base end portions 14 and 24. Further, the base end portion 14 and the base end portion 24 extend in parallel to the center line C from the bent portion 13 or the bent portion 23 so as to be symmetric with respect to the center line C.

先端部２１は、エア噴射通路３の中心線Ｃと直交する先端面２１１と、第２部材２の外面であって、先端部２１の先端である先端面２１１から基端部２４に向けて、中心線Ｃに対して傾斜するテーパ面２１２と、第２部材２の内面であって、先端面２１１から基端部２４に向けて、中心線Ｃに平行に延びる先端部内面２１３と、を備えている。   The distal end portion 21 is a distal end surface 211 orthogonal to the center line C of the air injection passage 3 and the outer surface of the second member 2 from the distal end surface 211 that is the distal end of the distal end portion 21 toward the proximal end portion 24. A tapered surface 212 that is inclined with respect to the center line C; and an inner surface of the second member 2, and a distal end portion inner surface 213 that extends parallel to the center line C from the distal end surface 211 toward the proximal end portion 24. ing.

直線部２２は、第２部材２の外面であって、テーパ面２１２から基端部２４に向けて、中心線Ｃに平行に延びる直線部外面２２１と、先端部内面２１３から基端部２４に向けて、中心線Ｃに平行に延びる直線部内面２２２と、を備えている。なお、先端部内面２１３と直線部内面２２２とは、同一平面上で連続した平面となっている。   The straight portion 22 is an outer surface of the second member 2, and extends from the tapered surface 212 toward the base end portion 24 in parallel with the center line C, and from the tip end inner surface 213 to the base end portion 24. And a straight portion inner surface 222 extending parallel to the center line C. In addition, the front-end | tip part inner surface 213 and the linear part inner surface 222 are the planes which continued on the same plane.

先端面１１１と先端面２１１とは、同一平面上に位置しており、鋼板Ｓから等距離の位置に位置するようになっている。また、テーパ面１１２とテーパ面２１２とは、中心線Ｃに対して対称となるよう傾斜している。具体的には、テーパ面１１２及びテーパ面２１２は、先端面１１１及び先端面２１１から基端部１４及び基端部２４に向けて、中心線Ｃとの距離が長くなるように傾斜している。テーパ面１１２及びテーパ面２１２の、中心線Ｃに対する傾斜角度Ｄは、２０〜４０度となっている。テーパ面１１２及びテーパ面２１２の大きさは、中心線Ｃに平行な方向に３ｍｍ程度、中心線Ｃに垂直な方向に１．５ｍｍ程度である。   The front end surface 111 and the front end surface 211 are located on the same plane and are located at an equal distance from the steel plate S. Further, the tapered surface 112 and the tapered surface 212 are inclined so as to be symmetric with respect to the center line C. Specifically, the tapered surface 112 and the tapered surface 212 are inclined so that the distance from the center line C becomes longer from the distal end surface 111 and the distal end surface 211 toward the proximal end portion 14 and the proximal end portion 24. . The inclination angle D of the tapered surface 112 and the tapered surface 212 with respect to the center line C is 20 to 40 degrees. The sizes of the tapered surface 112 and the tapered surface 212 are about 3 mm in a direction parallel to the center line C and about 1.5 mm in a direction perpendicular to the center line C.

直線部内面１２２と直線部内面２２２との距離は、１．５〜２．５ｍｍであり、直線部内面１２２と先端部内面１１３とは同一平面上に位置し、直線部内面２２２と先端部内面２１３とは同一平面上に位置するので、先端部内面１１３と先端部内面２１３との距離も同様に、１．５〜２．５ｍｍである。すなわち、エア噴射通路３の幅は、１．５〜２．５ｍｍである。なお、直線部１２及び直線部２２の厚さは、それぞれエア噴射通路３の幅より小さくなっている。   The distance between the straight portion inner surface 122 and the straight portion inner surface 222 is 1.5 to 2.5 mm, and the straight portion inner surface 122 and the tip end inner surface 113 are located on the same plane. Since 213 is located on the same plane, the distance between the tip inner surface 113 and the tip inner surface 213 is also 1.5 to 2.5 mm. That is, the width of the air injection passage 3 is 1.5 to 2.5 mm. In addition, the thickness of the linear part 12 and the linear part 22 is smaller than the width | variety of the air injection path 3, respectively.

前記構成のエアナイフ装置１０によれば、次のような効果を発揮できる。   According to the air knife device 10 configured as described above, the following effects can be exhibited.

（１）第１部材１の内面である、先端部内面１１３及び直線部内面１２２は、エア噴射通路３の中心線Ｃに平行な平面となっており、第２部材２の内面である、先端部内面２１３及び直線部内面２２２は、エア噴射通路３の中心線Ｃに平行な平面となっている。さらに、第１部材１の外面及び第２部材２の外面には、それぞれ、エア噴射通路３の中心線に対して対称となるテーパ面１１２及びテーパ面２１２が形成されているので、エア噴射通路３から噴射されたエア速度の減衰を低減させることができ、エアナイフ装置１０の水切り性能を向上させることができる。その結果、エアナイフ装置１０のみで鋼帯Ｓの水切りを行うことで、水切りロールを不要とすることができ、水切りロールによって鋼帯Ｓの表面に傷を付けることを防止できる。 (1) The tip inner surface 113 and the straight portion inner surface 122 which are the inner surfaces of the first member 1 are flat surfaces parallel to the center line C of the air injection passage 3 and are the inner surfaces of the second member 2. The portion inner surface 213 and the straight portion inner surface 222 are flat surfaces parallel to the center line C of the air injection passage 3. Further, the outer surface of the first member 1 and the outer surface of the second member 2 are formed with a tapered surface 112 and a tapered surface 212 which are symmetrical with respect to the center line of the air injection passage 3, respectively. The attenuation of the air velocity injected from 3 can be reduced, and the draining performance of the air knife device 10 can be improved. As a result, by draining the steel strip S with only the air knife device 10, a draining roll can be made unnecessary, and the surface of the steel strip S can be prevented from being damaged by the draining roll.

（２）先端面１１１と先端面２１１とが同一平面上に位置しているので、エア噴射口４近傍の乱流の発生が抑制され、エア噴射口４から噴射されたエア速度の減衰を低減させることができ、エアナイフ装置１０の水切り性能を向上させることができる。 (2) Since the front end surface 111 and the front end surface 211 are located on the same plane, generation of turbulent flow near the air injection port 4 is suppressed, and attenuation of the air velocity injected from the air injection port 4 is reduced. It is possible to improve the draining performance of the air knife device 10.

（３）テーパ面１１２及びテーパ面２１２は、エア噴射通路３の中心線Ｃに対して２０〜４０度傾斜するようになっているので、エア噴射口４から噴射されたエア速度の減衰をより低減させることができ、エアナイフ装置１０の水切り性能を向上させることができる。 (3) Since the taper surface 112 and the taper surface 212 are inclined by 20 to 40 degrees with respect to the center line C of the air injection passage 3, the air velocity injected from the air injection port 4 is further attenuated. It can be reduced, and the draining performance of the air knife device 10 can be improved.

なお、テーパ面１１２、２１２が設けられず、直線部外面１２１、２２１と先端面１１１、１２１とで構成される角度が直角である場合、噴射されたエアは、周囲の空気を円滑に巻き込むことができず、乱流が発生しエア速度が減衰してしまう。また、テーパ面１１２、２１２の傾斜角度Ｄが２０度以下の場合には、テーパ面１１２、２１２と先端面１１１、１２１とで構成される角度が直角に近くなり、同様に乱流が発生しエア速度が減衰してしまう。そして、テーパ面１１２、２１２の傾斜角度Ｄが４０度を超える場合は、直線部外面１２１、２２１とテーパ面１１２、２１２とで構成される角度が直角に近づくこととなり、同様に乱流が発生しエア速度が減衰してしまう。また、テーパ面１１２、２１２は、直線部１２、２２の内面に設けられるよりも外面に設けられる方が好ましい。図３は、テーパ面の有無に対する、エアナイフ装置１０の先端部１１から鋼板Ｓまでの距離とエア速度との関係を示したグラフである。図３に示されるように、エアの噴射条件が同じとき、テーパ面なしの場合、直線部１２、２２の内面にテーパ面を設ける場合（内側テーパ面）及び直線部１２、２２の外面にテーパ面を設ける場合（外側テーパ面）を比較すると、外側テーパ面が、最もエア速度が減速しにくいことがわかる。なお、先端部１１から鋼板Ｓまでの距離が近いほどエア速度が速くなっているが、実際には高速で走行する鋼板Ｓのばたつきや、鋼板Ｓの継ぎ目によって鋼板Ｓの厚さが変動する場合があるので、先端部１１から鋼板Ｓまでの距離は１５〜２０ｍｍであることが好ましい。実際、図３に示されるように、先端部１１から鋼板Ｓまでの距離が１５〜２０ｍｍのところで、エア速度の減速に対するテーパ面なし、内側テーパ面、外側テーパ面の違いが特に顕著に現れている。   In addition, when the taper surfaces 112 and 212 are not provided and the angle formed by the linear portion outer surfaces 121 and 221 and the tip surfaces 111 and 121 is a right angle, the injected air smoothly entrains the surrounding air. Turbulence occurs and the air velocity is attenuated. Further, when the inclination angle D of the tapered surfaces 112 and 212 is 20 degrees or less, the angle formed by the tapered surfaces 112 and 212 and the tip surfaces 111 and 121 is close to a right angle, and turbulence is generated in the same manner. Air velocity will be attenuated. When the inclination angle D of the tapered surfaces 112 and 212 exceeds 40 degrees, the angle formed by the linear portion outer surfaces 121 and 221 and the tapered surfaces 112 and 212 approaches a right angle, and similarly turbulence occurs. However, the air speed is attenuated. The tapered surfaces 112 and 212 are preferably provided on the outer surface rather than provided on the inner surfaces of the linear portions 12 and 22. FIG. 3 is a graph showing the relationship between the distance from the tip 11 of the air knife device 10 to the steel sheet S and the air velocity with respect to the presence or absence of the tapered surface. As shown in FIG. 3, when the air injection conditions are the same, when there is no taper surface, when the taper surface is provided on the inner surface of the straight portions 12 and 22 (inner taper surface), and the outer surface of the straight portions 12 and 22 is tapered. When the surface is provided (outer tapered surface), it can be seen that the outer tapered surface is the most difficult to reduce the air speed. In addition, although the air speed is faster as the distance from the tip portion 11 to the steel sheet S is shorter, the thickness of the steel sheet S varies due to flapping of the steel sheet S traveling at high speed or the joint of the steel sheet S in practice. Therefore, the distance from the tip 11 to the steel sheet S is preferably 15 to 20 mm. In fact, as shown in FIG. 3, when the distance from the tip 11 to the steel sheet S is 15 to 20 mm, the difference between the taper surface without deceleration, the inner taper surface, and the outer taper surface is particularly prominent. Yes.

（４）先端部内面１１３及び直線部内面１２２と先端部内面２１３及び直線部内面２２２との距離が、１．５〜２．５ｍｍとなっている。すなわち、エア噴射通路３の幅を１．５〜２．５ｍｍとすることによって、エア供給設備を増強させることなく、エアの噴射性を維持しながら、エア噴射圧力を所定以上とすることができ、その結果、エア噴射通路３から噴射されるエア速度を増加させることができる。そして、エア速度を増加させることで、エアナイフ装置１０の水切り性能を向上させることができる。なお、ここで、エア噴射通路３から噴射されるエア速度は、１６０ｍ／ｓ以上あることが好ましい。 (4) The distance between the tip inner surface 113 and the straight portion inner surface 122 and the tip inner surface 213 and the straight portion inner surface 222 is 1.5 to 2.5 mm. That is, by setting the width of the air injection passage 3 to 1.5 to 2.5 mm, the air injection pressure can be set to a predetermined value or more while maintaining the air injection performance without increasing the air supply facility. As a result, the air speed injected from the air injection passage 3 can be increased. And the draining performance of the air knife apparatus 10 can be improved by increasing an air speed. In addition, it is preferable here that the air speed injected from the air injection path 3 is 160 m / s or more.

上記実施形態では、直線部１２の直線部外面１２１は、中心線Ｃに平行に延びているが、中心線Ｃに対して傾斜していても良い。ただし、テーパ面１１２の中心線Ｃに対する傾斜角度より小さい角度で傾斜していることが好ましい。直線部２２の直線部外面２２１についても同様である。なお、直線部外面１２１及び直線部外面２２１が、中心線Ｃに対して傾斜する場合でも、直線部外面１２１と直線部外面２２１は、中心線Ｃに対して対称となるように傾斜することが好ましい。   In the above embodiment, the straight portion outer surface 121 of the straight portion 12 extends parallel to the center line C, but may be inclined with respect to the center line C. However, it is preferable to incline at an angle smaller than the inclination angle with respect to the center line C of the tapered surface 112. The same applies to the straight portion outer surface 221 of the straight portion 22. Even when the straight portion outer surface 121 and the straight portion outer surface 221 are inclined with respect to the center line C, the straight portion outer surface 121 and the straight portion outer surface 221 may be inclined so as to be symmetric with respect to the center line C. preferable.

上記実施形態では、折り曲げ部１３及び折り曲げ部２３が設けられているが、折り曲げ部が設けられず、直線部が直接基端部に接続されても良い。   In the above embodiment, the bent portion 13 and the bent portion 23 are provided, but the bent portion may not be provided, and the straight portion may be directly connected to the base end portion.

特許請求の範囲に記載された本発明の精神及び範囲から逸脱することなく、上記実施形態に対して各種変形及び変更を行うことも可能である。   Various modifications and changes may be made to the above embodiments without departing from the spirit and scope of the invention as set forth in the claims.

本発明では、鋼帯に付着した液体の除去能力を向上させたエアナイフ装置を提供できるので、産業上の利用価値が大である。   In the present invention, an air knife device having an improved ability to remove the liquid adhering to the steel strip can be provided, so that the industrial utility value is great.

１ 第１部材
１１ 先端部
１１１ 先端面 １１２ テーパ面 １１３ 先端部内面
１２ 直線部
１２１ 直線部外面 １２２ 直線部内面
１３ 折り曲げ部 １４ 基端部
２ 第２部材
２１ 先端部
２１１ 先端面 ２１２ テーパ面 ２１３ 先端部内面
２２ 直線部
２２１ 直線部外面 ２２２ 直線部内面
２３ 折り曲げ部 ２４ 基端部
３ エア噴射通路
４ エア噴射口
５ エアチャンバ
１０ エアナイフ装置
Ｃ 中心線
Ｓ 鋼板
Ｄ 傾斜角度 DESCRIPTION OF SYMBOLS 1 1st member 11 Tip part 111 Tip surface 112 Tapered surface 113 Tip part inner surface 12 Straight part 121 Straight part outer surface 122 Straight part inner surface 13 Bending part 14 Base end part 2 2nd member 21 Tip part 211 Tip surface 212 Tapered surface 213 Tip Inner surface 22 Straight portion 221 Straight portion outer surface 222 Straight portion inner surface 23 Bending portion 24 Base end portion 3 Air injection passage 4 Air injection port 5 Air chamber 10 Air knife device C Center line S Steel plate D Inclination angle

Claims (3)

第１部材と、エア噴射通路を介して前記第１部材と対向する第２部材と、を備えるエアナイフ装置であって、
前記エア噴射通路に対向する前記第１部材の内面及び前記第２部材の内面は、それぞれ、前記エア噴射通路の中心線に平行な平面となっており、
前記第１部材の外面及び前記第２部材の外面には、それぞれ、エア噴射口を形成する先端部の先端から基端部に向けて、前記中心線に対して対称となるテーパ面が形成されていることを特徴とする、エアナイフ装置。 An air knife device comprising a first member and a second member facing the first member via an air injection passage,
The inner surface of the first member and the inner surface of the second member facing the air injection passage are respectively flat surfaces parallel to the center line of the air injection passage,
On the outer surface of the first member and the outer surface of the second member, tapered surfaces that are symmetrical with respect to the center line are formed from the distal end portion of the distal end portion that forms the air injection port toward the proximal end portion, respectively. An air knife device characterized by comprising: 前記第１部材の先端部及び前記第２部材の先端部は、それぞれ、前記中心線に対して直交する第１先端面及び第２先端面を有しており、
前記第１先端面と前記第２先端面とは、同一平面上に位置している、請求項１記載のエアナイフ装置。 The distal end portion of the first member and the distal end portion of the second member have a first distal end surface and a second distal end surface orthogonal to the center line, respectively.
The air knife device according to claim 1, wherein the first tip surface and the second tip surface are located on the same plane. 前記テーパ面は、前記中心線に対して２０〜４０度傾斜しており、
前記第１部材と前記第２部材との間の距離は、１．５〜２．５ｍｍとなっている、請求項１又は２に記載のエアナイフ装置。 The tapered surface is inclined by 20 to 40 degrees with respect to the center line,
The air knife device according to claim 1 or 2, wherein a distance between the first member and the second member is 1.5 to 2.5 mm.
JP2016049643A 2016-03-14 2016-03-14 Air knife device Pending JP2017164664A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58195673U (en) * 1982-06-21 1983-12-26 日新製鋼株式会社 blowing nozzle
JPH05305646A (en) * 1992-04-30 1993-11-19 Mitsubishi Kasei Polytec Co Manufacture of thin thermoplastic synthetic resin film
JPH10100231A (en) * 1996-10-01 1998-04-21 Mitsubishi Chem Corp Manufacture of thermoplastic resin sheet
JP2001338864A (en) * 2000-05-30 2001-12-07 Dainippon Screen Mfg Co Ltd Apparatus and method for treatment of substrate
JP2002521586A (en) * 1998-07-30 2002-07-16 キンバリー クラーク ワールドワイド インコーポレイテッド Nonwoven web with internal additives moved by area
JP2003340319A (en) * 2002-05-23 2003-12-02 Hitachi Electronics Eng Co Ltd Air-knife nozzle
JP2009172554A (en) * 2008-01-28 2009-08-06 Toshiba Corp Air knife unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58195673U (en) * 1982-06-21 1983-12-26 日新製鋼株式会社 blowing nozzle
JPH05305646A (en) * 1992-04-30 1993-11-19 Mitsubishi Kasei Polytec Co Manufacture of thin thermoplastic synthetic resin film
JPH10100231A (en) * 1996-10-01 1998-04-21 Mitsubishi Chem Corp Manufacture of thermoplastic resin sheet
JP2002521586A (en) * 1998-07-30 2002-07-16 キンバリー クラーク ワールドワイド インコーポレイテッド Nonwoven web with internal additives moved by area
JP2001338864A (en) * 2000-05-30 2001-12-07 Dainippon Screen Mfg Co Ltd Apparatus and method for treatment of substrate
JP2003340319A (en) * 2002-05-23 2003-12-02 Hitachi Electronics Eng Co Ltd Air-knife nozzle
JP2009172554A (en) * 2008-01-28 2009-08-06 Toshiba Corp Air knife unit

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