WO2013061411A1 - Sécheur de revêtement - Google Patents

Sécheur de revêtement Download PDF

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Publication number
WO2013061411A1
WO2013061411A1 PCT/JP2011/074592 JP2011074592W WO2013061411A1 WO 2013061411 A1 WO2013061411 A1 WO 2013061411A1 JP 2011074592 W JP2011074592 W JP 2011074592W WO 2013061411 A1 WO2013061411 A1 WO 2013061411A1
Authority
WO
WIPO (PCT)
Prior art keywords
drying
air
path
port
air supply
Prior art date
Application number
PCT/JP2011/074592
Other languages
English (en)
Japanese (ja)
Inventor
繁 中島
朝一 石田
Original Assignee
新東工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 新東工業株式会社 filed Critical 新東工業株式会社
Priority to PCT/JP2011/074592 priority Critical patent/WO2013061411A1/fr
Priority to CN201190001171.6U priority patent/CN203908246U/zh
Publication of WO2013061411A1 publication Critical patent/WO2013061411A1/fr
Priority to IN3114CHN2014 priority patent/IN2014CN03114A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
    • B05D3/0413—Heating with air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes

Definitions

  • the present invention relates to a coating drying apparatus for drying an object to be coated while being conveyed in a drying furnace.
  • a coating drying apparatus for drying an object to be coated, a coating drying apparatus is used in which a conveying means is provided in a drying furnace and the object to be coated is dried while being conveyed.
  • a conveying means is provided in a drying furnace and the object to be coated is dried while being conveyed.
  • the steel material is coated, transported into a drying furnace, and dried while being transported.
  • a hot air circulation type in which hot air is blown onto an object to be coated in a drying furnace is employed.
  • the hot air circulation type coating drying apparatus described in the following Patent Document 1 branches from the heating section to the drying furnace, and has a heated air pipe that is open at two or more locations in the drying furnace. The hot air is blown toward the transport path in the drying furnace by the heated air pipe.
  • Such a coating drying apparatus is required to be able to dry in a short time with hot air at the lowest possible temperature in order to increase the processing speed at low cost.
  • the conventional paint drying apparatus is liable to cause a temperature drop while hot air flows through the heated air pipe, and must be supplied with high-temperature hot air in advance. There was a problem that the costly drying process could not be performed.
  • the conventional paint drying apparatus is a type in which heated air is blown into the drying furnace by a blower fan, the inside of the drying furnace is pressurized and the vaporization temperature of the paint is increased, and the temperature of the heated air is increased. When it is lowered, there is a problem that an efficient drying process cannot be performed. Furthermore, since it is a form in which hot air is blown toward the object to be coated, when drying processing is carried out while conveying the object to be coated, the time for direct contact with heated air is shortened, which also makes efficient drying processing. There was a problem that could not be done.
  • the present invention is an example of a problem to deal with such a problem. That is, in a coating and drying apparatus that dries an object to be coated while being transported in a drying furnace, the drying process can be performed in a short time using relatively low temperature dry air, and an efficient drying process is performed at a low cost. It is an object of the present invention to be able to do so.
  • a paint drying apparatus has at least the following configuration.
  • a drying processing path that forms a flow of drying air along the transport path, and a drying air supply channel that supplies the drying air to the drying processing path from a blow-out port that is disposed in the vicinity of the carry-in port and the carry-out port, respectively.
  • a drying air circulating means for exhausting a part of the air sucked from an intake port provided at an intermediate position of the drying processing path and circulating it to the drying air supply flow path.
  • the coating drying apparatus having such a feature can make the inside of the drying treatment path for carrying out the drying treatment while conveying the object to be coated, so that the vaporization temperature of the organic solvent contained in the paint is lowered and the drying air is reduced.
  • the drying speed can be increased even when the temperature of the is lowered. This enables an efficient drying process at a low cost.
  • the inside of the drying treatment path is in a negative pressure state and the exhaust port is concentrated at one place of the dry air circulation means, it is possible to prevent the odor of the organic solvent generated during drying from being diffused to the surroundings.
  • FIG. 2A is a cross-sectional view of a drying furnace in a paint drying apparatus according to an embodiment of the present invention (FIG. 2A is a cross-sectional view along AA in FIG. 1, and FIG. 2B is a cross-sectional view along BB in FIG. 1). . It is explanatory drawing which showed the dry air circulation path
  • FIG. 1 is an explanatory view showing the overall configuration of a coating drying apparatus according to an embodiment of the present invention
  • FIG. 2 is a sectional view of a drying furnace in the coating drying apparatus according to an embodiment of the present invention (FIG. 2 (a). ) Is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line BB in FIG.
  • FIG. 3 is an explanatory view showing a dry air circulation path of the paint drying apparatus according to the embodiment of the present invention.
  • a coating and drying apparatus 1 includes a conveying means 10 for conveying an object to be coated W such as a coated steel material, a drying furnace 20 for drying the object to be coated W, and dry air in the drying furnace 20.
  • a dry air circulation means 30 for circulation is provided.
  • the example used for the drying process in a part of shipbuilding steel processing line is illustrated and demonstrated, the to-be-coated object W is not specifically limited to this.
  • the transport means 10 is means for transporting the workpiece W coated in the previous coating process into the drying furnace 20 and delivering it to the next process through the drying furnace 20.
  • a slat conveyor is used. Since the slat conveyor can be transported in a state where the bottom surface of the workpiece W is point-supported, the influence on the coating can be minimized.
  • the conveying means 10 is not limited to this, and it is possible to use a roller conveyor, a hanger conveyor, a carriage (carriage) on which the object is placed and moved, depending on the state of painting and the form of the object. it can.
  • the drying furnace 20 includes a carry-in port 20A and a carry-out port 20B for the article W to be transported by the transport unit 10, and a transport path 10A for the transport unit 10 is provided therein.
  • the drying furnace 20 supplies dry air to the drying processing path 21 from a drying processing path 21 that forms a flow of drying air along the transport path 10A, and an outlet 22 that is disposed in the vicinity of the carry-in port 20A and the carry-out port 20B.
  • a dry air supply flow path 23 is provided inside.
  • the air outlets 22 are provided both above and below the transport path 10 ⁇ / b> A in the transport unit 10.
  • the drying processing path 21 is a slit-shaped space formed between the internal ceiling surface 21A and the internal floor surface 21B in the drying furnace 20, and the internal ceiling surface 21A and the internal floor in the drying furnace 20 are illustrated.
  • a dry air supply channel 23 is provided outside each of the surfaces 21B.
  • the drying furnace 20 has a double ceiling and double floor structure by including the internal ceiling surface 21A and the internal floor surface 21B that form the drying processing path 21 inside the heat insulating outer wall 20S.
  • the double-wall structure is employ
  • the dry air circulation means 30 partially exhausts the air sucked from the air inlet 31A provided at the intermediate position of the drying processing path 21 and circulates it to the dry air supply flow path 23.
  • the inlet port 31A may be provided between the outlet port 22 on the carry-in port 20A side and the outlet port 22 on the carry-out port 20B side.
  • the intake port 31A is effectively provided at a substantially central position in the longitudinal direction of the drying processing path 21. An air stream of dry air can be generated in the drying processing path 21.
  • the dry air circulation means 30 includes an intake passage 31, a circulation fan 32, an air supply passage 33, and an exhaust passage 34 that communicate with the drying processing path 21 at the intake port 31 ⁇ / b> A described above.
  • the intake side of the circulation fan 32 is connected to the intake port 31A, and the air supply side of the circulation fan 32 is connected to the dry air supply flow path 23 via heating means 35 such as a gas burner unit.
  • An exhaust port 34 ⁇ / b> A of the exhaust passage 34 is provided on the air supply side of the circulation fan 32.
  • the heating means 35 can be deactivated or eliminated depending on the temperature of the outside air or the dry state.
  • the flow of the drying air of the paint drying apparatus 1 having such a configuration will be described. 1 to 3, the air flow is indicated by broken arrows.
  • the circulation fan 32 sucks the processing air in the drying processing path 21 from the air inlet 31 ⁇ / b> A, so that an air flow along the transport path 10 ⁇ / b> A of the transporting unit 10 is generated in the drying processing path 21.
  • the drying processing path 21 has a slit-like space so that such air flow is likely to occur, and the inside of the drying processing path 21 for performing the drying processing on the article W is an air circulation channel. It has become a part.
  • the air sucked out from the inside of the drying processing path 21 through the air inlet 31A is compressed by the circulation fan 32 and provided at both ends of the drying processing path 21 via the air supply passage 33 and the drying air supply passage 23. From the blowout port 22 into the drying processing path 21.
  • the air blown out from the blowout port 22 is directed to the transport path 10A for transporting the workpiece W, and further forms an air flow toward the intake port 31A.
  • the article W is always exposed to the flow of the dry air by the air flow along the transport path 10A, thereby improving the drying efficiency. be able to.
  • the air flow in the drying treatment path 21 is accelerated by the slit-shaped narrow space, the organic solvent of the paint can be efficiently vaporized.
  • the air flow toward the intake port 31A causes the inside of the drying treatment path 21 to be in a negative pressure state centering on the central portion. This lowers the vaporization temperature of the organic solvent of the paint, and the paint can be dried in a short time without increasing the temperature of the drying air. For this reason, the fuel cost at the time of heating dry air can be held down, and the running cost at the time of operation can be reduced.
  • the organic solvent vaporized in the drying treatment path 21 is exhausted from the exhaust port 34 ⁇ / b> A through the exhaust passage 34 provided on the air supply side of the circulation fan 32.
  • An exhaust fan 37 is provided in the exhaust passage 34.
  • the drying treatment path 21 of the drying furnace 20 is a narrow space sandwiched between the inner ceiling surface 21A and the inner floor surface 21B. As described above, this speeds up the flow of the drying air. .
  • the drying furnace 20 has a double ceiling and double floor structure in which the inner ceiling surface 21A and the inner floor surface 21B are covered by the heat insulating outer wall 20S of the drying furnace 20, a heat retaining effect in the drying treatment path 21 is thereby achieved. Can be increased.
  • the dry air supply flow path 23 is provided outside the internal ceiling surface 21A and the internal floor surface 21B in the double ceiling / double floor structure, the dry air is introduced while the dry air is guided into the drying processing path 21. It can suppress that temperature falls.
  • the drying furnace 20 has a double ceiling and double floor structure, it is possible to suppress heat loss and drying odor (odor due to vaporization of organic solvent) in the drying furnace 20.
  • the blowout port 22 is provided inside the heat insulating outer wall 20S of the drying furnace 20 at the carry-in entrance 20A and the carry-out exit 20B, so that the odor contained in the circulating air is outside the dry furnace 20. The leak is suppressed.
  • the dry air circulation means 30 can be provided with a heating means 35 and an exhaust port 34 ⁇ / b> A on the air supply side of the circulation fan 32.
  • the temperature of the drying air can be lowered by the negative pressure action in the drying processing path 21, so that the heating means 35 can be omitted or minimized, but when the outside air is low
  • the drying capacity can be increased by raising the temperature of the drying air by the heating means 35.
  • the maximum drying efficiency can be obtained under each operating condition by changing the exhaust amount from the exhaust port 34A when the heating means 35 is operated and when it is not operated.
  • the heating unit 35 can be switched between operating and non-operating by the control unit 36, and the control unit 36 performs control to reduce the exhaust amount from the exhaust port 34 ⁇ / b> A when the heating unit 35 is operating.
  • the control for reducing the exhaust amount may be control for reducing the damper 34B of the exhaust port 34A or control for reducing the rotational speed of the exhaust fan 37.
  • the exhaust temperature When the temperature of the drying air is raised by operating the heating means 35, the exhaust temperature also rises. Therefore, the exhaust amount is limited within a range where the organic solvent concentration in the drying furnace 20 does not reach the dangerous concentration. . As a result, the waste heat loss accompanying the rise in the exhaust temperature can be minimized, the temperature in the drying processing path 21 can be raised to the maximum with a small amount of fuel used, and the heating means 35 is activated. The drying efficiency in the case can be improved. In addition, since the waste heat loss is reduced and the temperature in the drying processing path 21 can be increased in a short time, the preheating time can be shortened.
  • the control unit 35 controls the damper 34B and the exhaust fan 37 so that the exhaust amount is maximized. Increasing the amount of exhaust increases the amount of fresh air that enters the drying treatment path 21. As a result, the concentration of the vaporized organic solvent can be reduced, and the drying efficiency can be improved.
  • relatively cold air is sucked and heated at the intermediate portion of the drying processing path 21 and is supplied from both ends of the drying processing path 21, so that the temperature distribution in the drying processing path 21 is uniform along the longitudinal direction. Prone. As a result, the drying process can be performed efficiently over the entire area of the drying processing path 21 from the carry-in port 20A side to the carry-out port 20B side.
  • the air compressed by the circulation fan 32 is heated by the heating means 35, branches to the upper surface side and the lower surface side of the drying processing path 21, and immediately enters the drying furnace 20, and then the drying furnace
  • the air is branched left and right at the center of the dry air supply flow path 23 provided in the air 20 and sent to the blowout ports 22 provided at both ends of the dry processing path 21. Since the heat loss can be suppressed by arranging the dry air supply flow path 23 in the drying furnace 20, the duct volume of the dry air supply flow path 23 is set large so that the pressure loss is reduced. be able to.
  • the dry air supply flow path 23 is provided inside the drying furnace 20 so as to be close to or in contact with the dry processing path 21, so that the heated dry air flowing through the dry air supply flow path 23 increases the temperature in the dry processing path 21.
  • the heated and dried air can be routed through a long flow path without heat loss to the outside. Thereby, even when the drying process path 21 is designed to be long, it is possible to suppress a decrease in thermal efficiency.
  • a slat conveyor is used as the conveying means 10, and the blowout ports 23 are provided both above and below the conveying path 10A, so that the coating process can be performed.
  • both the upper and lower surfaces can be dried simultaneously.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

La présente invention concerne un sécheur de revêtement (1) pourvu : d'un moyen de transport (10) permettant de transporter un objet revêtu (W) ; et d'un four de séchage (20) pourvu d'une ouverture de charge (20A) et d'une ouverture de décharge (20B) qui sont prévues pour l'objet revêtu (W) qui est transporté par le moyen de transport (10), l'intérieur du four de séchage (20) comprenant une voie de transport (10A) pour le moyen de transport (10). Le four de séchage (20) comprend : une voie de séchage (21) dans laquelle l'écoulement de l'air de séchage circulant le long de la voie de transport (10A) est formé ; et une voie d'écoulement d'alimentation en air de séchage (23) pour fournir de l'air de séchage à la voie de séchage (21) depuis des ouvertures d'évacuation (22) disposées à proximité de l'ouverture de charge (20A) et de l'ouverture de décharge (20B). Un moyen de circulation de l'air de séchage (30) évacue une partie de l'air aspiré à l'intérieur par une ouverture d'aspiration (31A) prévue à l'emplacement intermédiaire de la voie de séchage (21) et fait recirculer la partie de l'air vers la voie d'écoulement d'alimentation en air de séchage (23).
PCT/JP2011/074592 2011-10-25 2011-10-25 Sécheur de revêtement WO2013061411A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2011/074592 WO2013061411A1 (fr) 2011-10-25 2011-10-25 Sécheur de revêtement
CN201190001171.6U CN203908246U (zh) 2011-10-25 2011-10-25 涂装干燥装置
IN3114CHN2014 IN2014CN03114A (fr) 2011-10-25 2014-04-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/074592 WO2013061411A1 (fr) 2011-10-25 2011-10-25 Sécheur de revêtement

Publications (1)

Publication Number Publication Date
WO2013061411A1 true WO2013061411A1 (fr) 2013-05-02

Family

ID=48167278

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/074592 WO2013061411A1 (fr) 2011-10-25 2011-10-25 Sécheur de revêtement

Country Status (3)

Country Link
CN (1) CN203908246U (fr)
IN (1) IN2014CN03114A (fr)
WO (1) WO2013061411A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110722870A (zh) * 2019-11-14 2020-01-24 广东环葆嘉节能科技有限公司 干燥循环装置、复合机以及干燥方法
CN115420086A (zh) * 2022-07-28 2022-12-02 安徽丰运高分子材料有限公司 一种用于再生硅胶生产的烘烤装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110196803B (zh) * 2018-02-27 2024-04-16 北京京东尚科信息技术有限公司 一种软件缺陷培训方法和系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103694U (ja) * 1981-12-30 1983-07-14 大森　元春 魚類乾燥装置
JPS63197677U (fr) * 1987-06-09 1988-12-20
JPH01299675A (ja) * 1988-05-30 1989-12-04 Trinity Ind Corp 乾燥装置の運転方法
JPH07502102A (ja) * 1991-08-29 1995-03-02 アーベーベー、フレークト、アクチエボラーグ 塗装加熱乾燥炉の対流ゾーンにおける通気分配方法およびその装置
JPH07155672A (ja) * 1993-12-10 1995-06-20 Trinity Ind Corp 乾燥炉

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103694U (ja) * 1981-12-30 1983-07-14 大森　元春 魚類乾燥装置
JPS63197677U (fr) * 1987-06-09 1988-12-20
JPH01299675A (ja) * 1988-05-30 1989-12-04 Trinity Ind Corp 乾燥装置の運転方法
JPH07502102A (ja) * 1991-08-29 1995-03-02 アーベーベー、フレークト、アクチエボラーグ 塗装加熱乾燥炉の対流ゾーンにおける通気分配方法およびその装置
JPH07155672A (ja) * 1993-12-10 1995-06-20 Trinity Ind Corp 乾燥炉

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110722870A (zh) * 2019-11-14 2020-01-24 广东环葆嘉节能科技有限公司 干燥循环装置、复合机以及干燥方法
CN115420086A (zh) * 2022-07-28 2022-12-02 安徽丰运高分子材料有限公司 一种用于再生硅胶生产的烘烤装置

Also Published As

Publication number Publication date
CN203908246U (zh) 2014-10-29
IN2014CN03114A (fr) 2015-07-03

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