JP4327419B2 - Vaporization degreasing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vaporizing and degreasing apparatus that removes oil and fat components such as processing oil adhering to a processed part, and more particularly to a vaporizing and degreasing apparatus that volatilizes and removes oil and fat components by hot air.
[0002]
[Prior art]
For example, for a processed product such as a machine part such as a rolled plate, it is necessary to remove processing oil or the like adhered during processing when processing is completed. As a method for removing the oil and fat component from the processed product, there is a method in which the air is heated to generate hot air, and this hot air is blown onto the processed product to volatilize and remove the oil and fat component adhering to the processed product.
[0003]
However, when volatilizing by focusing on the boiling point of the oil and fat component adhering to the surface of the processed product, the oil and fat component is gradually vaporized from the surface of the processed product when the surface temperature of the processed product becomes about the same as the hot air temperature. It takes a long time to volatilize. For this reason, it has been necessary to reduce the line speed or lengthen the conveying section in the apparatus. Here, if the line speed is reduced or the conveying section in the apparatus is lengthened, the time for vaporization and degreasing treatment becomes longer, and the material may be altered due to overheating of the processed product. In addition, if the conveying section in the apparatus is lengthened, the apparatus itself becomes large, so that a large arrangement space is required. Furthermore, since the conventional apparatus is configured to volatilize by paying attention to the boiling point of the oil and fat component, it is necessary to carry out washing and replacement in the previous step in order to remove the high boiling oil and fat.
[0004]
[Problems to be solved by the invention]
In consideration of the above facts, the present invention provides a vaporization and degreasing apparatus that can maintain the line speed and reduce the size, vaporize and degrease at a lower temperature and in a shorter time than conventional methods, and can also remove high-boiling oils and fats. The task is to do.
[0005]
[Means for Solving the Problems]
The vaporization degreasing apparatus of the present invention described in claim 1 is provided on a transfer line of a processing object, and includes a box body including an inlet portion and an outlet portion of the processing object, and the outlet portion side of the box body. provided a supply means for sending heated air to the vicinity side of the outlet portion of the box body incorporating ambient air, provided on the inlet side of the box body, the device and eject the air of the box body A take-out portion for exhausting to the outside, and provided in a blower passage through which the heated air sent from the supply means passes to the take-out portion side and disposed along the transport line in the box, A plurality of circulating means for evaporating oil on the object to be processed by spraying air to the object to be processed and blowing an amount of air larger than the amount of air supplied by the supplying means at a higher speed than the supplying means; Characterized in that it has.
[0006]
According to the vaporization degreasing apparatus of the present invention described in claim 1, the object to be treated is conveyed by the conveyance line and fed into the box from the inlet . Further, the supply means provided on the outlet side of the box body takes in outside air and sends heated air to the vicinity of the outlet portion in the box body, while the take-out part provided on the inlet side of the box body includes the inside of the box body. to the exhaust to the to the outside of the device eject the air. In this box, a plurality of circulation means arranged along the transfer line is provided in the air passage through which the heated air sent from the supply means passes to the take-out side, and these circulation means are provided in the air in the box. And spray on the object to be processed. At that time, the circulation means sprays an air amount larger than the supply air amount by the supply means at a higher speed than the supply means, and evaporates the fats and oils on the processing object. Here, the air amount is an air amount per unit time. In this way, not only the blowing of hot air by the supply means, but also a plurality of circulation means provided in the box body blows a large amount of air to the processing object at a high speed, thereby maintaining the gas-liquid equilibrium. Evaporation of oils and fats from the plant becomes faster. As a result, vaporization and degreasing can be performed at a lower temperature and in a shorter time than the conventional one while maintaining the line speed and downsizing the apparatus. Moreover, it can respond also to removal of high boiling oils and fats.
[0007]
According to a second aspect of the present invention, there is provided a vaporizing and degreasing apparatus according to the first aspect, wherein the object to be treated is an ultrathin foil, disposed in the box, and is guided by winding the ultrathin foil. has a wrapping roller, said circulation means, characterized in the Turkey blown incorporating air of the box body to the ultra-thin foil of the roller winding portion of the wrapping roller.
[0008]
According to the vaporization degreasing apparatus of the present invention described in claim 2, the ultrathin foil is conveyed by the conveyance line and fed into the box. In the box, the supply means sends heated air, while the takeout unit takes out the air in the box. Moreover, a winding roller winds and guides an ultrathin foil in the box. The circulation means blows air onto the ultrathin foil wound around the roller winding portion of the winding roller. In this way, it is possible to prevent the ultrathin foil from being deformed by blowing air not to the ultrathin foil between adjacent winding rollers but to the ultrathin foil wound around the roller winding portion.
The vaporizing and degreasing apparatus according to a third aspect of the present invention is characterized in that, in the configuration according to the second aspect, the winding roller is wound and guided in a state where the ultrathin foil is folded back in a zigzag shape. .
According to the vaporization degreasing apparatus of the present invention described in claim 3, the winding roller is wound and guided in a state where the ultrathin foil is folded back in a zigzag shape.
According to a fourth aspect of the present invention, there is provided the vaporizing and degreasing apparatus according to any one of the first to third aspects, wherein the box body is adjacent to the plurality of circulation means and is heat-exchanged. The heat exchanger takes in the air in the box and heats it, and the circulating means blows the air heated by the heat exchanger onto the object to be treated.
According to the vaporizing and degreasing apparatus of the present invention as set forth in claim 4 , heat exchangers are arranged in the box adjacent to the plurality of circulation means, respectively, and the air in the box is taken in by the heat exchanger. And heated and then sprayed onto the object to be processed by the circulating means.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of a vaporizing and degreasing apparatus according to the present invention will be described with reference to the drawings. FIG. 1 shows a schematic perspective view of the vaporizing and degreasing apparatus 10. As shown in FIG. 1, the vaporization degreasing apparatus 10 is used for removing a processing oil component from a processed product such as a strip steel 12 (ultra thin foil) as a processing object. Various steels such as stainless steel (for example, SUS), copper (Cu), aluminum (Al), iron (Fe), and the like are targeted as the steel type of the strip steel 12. The thickness of the strip 12 is preferably about 5 μm to 2000 μm, preferably about 5 μm to 150 μm, and more preferably about 5 μm to 100 μm. In the previous process, the steel strip 12 is transported and fed to a vaporizer / degreasing apparatus 10 as a transport line (not shown) in a state where the processing oil remains attached during the processing operation.
[0010]
The vaporization degreasing apparatus 10 is on a conveyor line (not shown) and includes a box 14. The box 14 is formed with an opening 15 (see FIG. 2) as an inlet portion which is an insertion portion of the strip steel 12 and an opening 16 as an outlet portion which is a carry-out portion of the strip steel 12. A blower duct 20 as a supply means is disposed on the upper surface of the box body 14. After the atmosphere is heated via a blower pump and a heat exchanger by driving a motor (not shown), the heated air is blown to the side close to the opening 16 in the box 14 through the blower duct 20 (arrow B). reference).
[0011]
The blowing in the direction of arrow B is preferably about 2 m / s to 5 m / s. The temperature of the heated air to be blown should be about 50 ° C to 170 ° C, and preferably about 60 ° C to 150 ° C. The application range of this temperature varies depending on the oil to be adhered and the material of the object to be treated. For example, when the object to be treated is copper (Cu) or aluminum (Al), if it is made high, it is likely to undergo discoloration / denaturation, etc., so that the temperature is low, specifically, about 50 ° C. to 120 ° C. Is good. On the other hand, when the object to be treated is iron (Fe) or high-Ni steel, it is preferable that the temperature is relatively high and about 80 ° C. to 170 ° C. In addition, when spraying at high speed, it may become high temperature.
[0012]
Thereby, the temperature in the box 14 is set to 150 ° C., for example. Here, the temperature in the box 14 is preferably about 60 ° C. to 150 ° C. A suction duct 22 is disposed on the upper surface of the box body 14 on the opposite side of the air duct 20. As shown in FIG. 2, which is a 2-2 cross-sectional view of FIG. 1, the suction duct 22 and the inside of the box body 14 are connected by a take-out portion 23. The suction duct 22 sucks air in the box body 14 through the take-out portion 23 and exhausts it in the direction of arrow C.
[0013]
As shown in FIG. 1, a plurality of winding rollers 18 are arranged on the upper and lower sides inside the box body 14 of the vaporizing and degreasing apparatus 10. The thin steel strip 12 is driven by receiving a tensile force from a drive source (not shown), and is inserted into the box body 14 (in the direction of the arrow D1) from the previous process, passes through the box body 14 and passes through the next process. Move in the direction of arrow D2. In this embodiment, the winding roller 18 is an idling roller, but a driving force may be applied to the winding roller 18 to positively convey the steel strip 12.
[0014]
In this embodiment, a total of ten winding rollers 18 are arranged in two upper and lower stages, and six on the upper stage and four on the lower stage are pivotally supported with their axes centered horizontally. However, the number of the winding rollers is not necessarily 10 and may be 0 depending on the case, and the arrangement may be one side instead of the upper and lower side zigzag. The steel strip 12 is sequentially wound around these winding rollers 18, is folded back in a zigzag shape, and proceeds in the box body 14. As shown in FIG. 3 which is a 3-3 sectional view of FIG. 1, a chain 19 is hung on the end of each winding roller 18. The chain 19 is synchronized with the rotation between the upper and lower winding rollers 18. As means for synchronizing, a timing belt may be used instead of the chain 19, and a motor may be attached to each winding roller 18.
[0015]
As shown in FIG. 1, a circulation fan 24 as a circulation means is disposed facing each winding roller 18. As shown in FIG. 3, the circulation fan 24 includes a rotary blade 25 </ b> B housed in a fan case 25 </ b> A, and the rotary blade 25 </ b> B is connected to a motor 28 and receives a rotational force. As shown in FIG. 2, which is a 2-2 cross-sectional view of FIG. 1, the fan case 25 </ b> A of the circulation fan 24 is formed with a blowing port 24 </ b> A. The outlets 24A are, for example, openings of 1000 mm × 40 mm, and are arranged at a pitch P of 400 mm to 800 mm. The circulation fan 24 blows air in the box 14 from the outlet 24 </ b> A to the steel strip 12 of the roller winding portion 18 </ b> A of the winding roller 18 in order to evaporate the oil and fat adhering to the surface of the steel strip 12. For example, the spraying speed is preferably about 10 m / s to 40 m / s. The spraying temperature is the same as the spraying temperature by the air duct 20, for example. The amount of air blown by the circulation fan 24 is preferably about 2000, for example, when the amount of air supplied by the blower duct 20 is 100. In order to blow an air amount of about 20 times the amount of air supplied by the air duct 20, the blowing speed of the circulation fan 24 may be about 20 times the air blowing speed of the air duct 20. Further, the adjustment of the air volume and the maintenance of the uniformity of the air in the box body 14 can be made relatively easy because a plurality of circulation fans 24 are provided.
[0016]
Here, the amount of air blown from the circulation fan 24 is increased when the amount of blown air is increased, the oil-and-fat component molar fraction of the vapor phase on the extreme surface of the steel strip in the box 14 is lowered, and the gas-liquid equilibrium is increased. This is to utilize the fact that the oil and fat adhering to the surface of the steel strip 12 evaporate and evaporate. The degree of vaporization and degreasing is determined by the temperature condition, the atmospheric pressure condition and the air volume condition, but here, the air volume in the box 14 is increased and the change in the concentration of the vapor phase is used, which is different from the conventional apparatus. For this reason, it is also effective for vapor degreasing of oils and fats having a high boiling point, for example, HC cleaning agents having a boiling point of 130 ° C to 230 ° C. Further, in order to prevent combustion and explosion due to an increase in the concentration of the oil component in the vapor phase in the box body 14, the blower duct 20 puts outside air into the box body 14, and the suction duct 22 is air in the box body 14. Is exhausted.
[0017]
A heat exchanger 26 is disposed in the box 14 adjacent to the circulation fan 24. The heat exchanger 26 exchanges heat with the air in the box body 14, heats the air taken in from the box body 14, and circulates wind that is blown into the box body 14 by the rotary blades 25 </ b> B (see FIG. 3). Keep at high temperature. As an example, the temperature of the air exchanged by the heat exchanger 26 may be set to about 70 ° C. This is a low temperature compared to the air temperature in the conventional apparatus.
[0018]
Next, the operation of the first embodiment will be described.
[0019]
This vaporization degreasing apparatus 10 is provided, for example, in a part of the process of removing and cleaning the processing oil adhered during rolling from the steel strip 12, and removes oil and fat components such as processing oil from the steel strip 12.
[0020]
As shown in FIG. 2, the steel strip 12 is transported by a transport line (not shown) and enters the box body 14. While the blower duct 20 sends heated air into the box body 14, the takeout unit 23 takes out the air in the box body 14. In this box 14, the winding roller 18 winds and guides the strip steel 12. The circulation fan 24 blows air onto the steel strip 12 wound around the roller winding portion 18 </ b> A of the winding roller 18. At that time, the circulation fan 24 blows an amount of air larger than the amount of air supplied by the blower duct 20 at a higher speed than the blower duct 20 to evaporate the oil and fat on the surface of the band steel 12.
[0021]
In this way, not only the blowing of hot air by the blower duct 20 but also the circulating fan 24 blows a large amount of air to the steel strip 12 at a high speed, so that it is on the surface of the steel strip 12 vaporized by the heat in the box 14. Since the oil and fat component is positively removed, the evaporation of the oil and fat from the surface of the steel strip 12 is promoted. As a result, vaporization and degreasing can be performed at a lower temperature and in a shorter time than the conventional one while keeping the line speed high and reducing the size of the vaporization and degreasing apparatus 10. Moreover, it can respond also to removal of high boiling oils and fats. Furthermore, it is possible to prevent the band steel 12 from being deformed by blowing air not to the band steel 12 between the adjacent winding rollers 18 but to the band steel 12 wound around the roller winding part 18A. In particular, since aluminum foil used for capacitors and electronic circuit components has a thickness of several μm, if strong wind strikes the unsupported portion between the roller winding portions 18A on the winding roller 18, it causes deformation.
[0022]
Next, a second embodiment will be described. The second embodiment is a disclosure example.
[0023]
The second embodiment is the same as the first embodiment in terms of the basic configuration in which the whole body is circulated and air is blown to the object to be processed by the circulation fan in the box. as shown, that conveys the machining part 50 by the belt conveyor 34 is significantly different. Here, examples of the processed component 50 include an aluminum fin and a copper pipe. By conveying with the belt conveyor 34, things other than thin strip steel can also be made into a process target object. Note that a chain or a roller conveyor may be used instead of the belt conveyor 34.
[0024]
The box 30 includes an overall circulation fan 36 driven by a motor 32 at the top. The general circulation fan 36 performs general circulation of the air in the box 30. A heat exchange distribution tank 38 is provided in communication with the general circulation fan 36. The heat exchanger tank 38 heats the air sent from the general circulation fan 36 in the direction of arrow E, and blows the air toward the belt conveyor 34 (in the direction of arrow F). As a result, air is blown onto the processed component 50 on the belt conveyor 34. The belt conveyor 34 has a net shape so that air from the heat exchange distribution tank 38 can pass therethrough. Here, the air of the entire circulation flows in a downward flow (see an arrow M in FIG. 5) on the side of the processed component 50, the side of the belt conveyor 34, and the like. A collecting tank 40 is provided below the belt conveyor 34, and a net-like extraction portion 40 </ b> A is provided on the upper surface of the collecting tank 40 so as to allow ventilation. An overall circulation duct 42 is formed in communication with the collecting tank 40. The general circulation duct 42 is directed upward along the wall surface of the box 30 and reaches the general circulation fan 36. As a result, the air in the collecting tank 40 flows to the general circulation fan 36 through the general circulation duct 42 as indicated by an arrow G.
[0025]
In the box 30, an in-tank circulation fan 44 is provided above the belt conveyor 34. As shown in FIG. 6 which is a 6-6 cross-sectional view of FIG. 4, the in-tank circulation fan 44 is driven by a motor (not shown) and is directed toward the processed component 50 on the belt conveyor 34 (in the direction of arrow H). Blow air. As shown in FIG. 5 which is a sectional view taken along line 5-5 in FIG. 4, the air hitting the workpiece 50 flows in the direction of arrow I, and the air passing through the belt conveyor 34 flows in the direction of arrow J. Flows in the direction of arrow K and returns into the in-tank circulation fan 44. As a result, the temperature is generally high above the belt conveyor 34, and conversely, the temperature is generally low below the belt conveyor 34.
[0026]
As shown in FIG. 6, the belt conveyor 34 extends from the inside of the box body 30 to the outside of the box body 30 through the openings 48 and 49, and is wound around the rotating roller 46. As the rotating roller 46 rotates, the belt conveyor 34 operates to convey the processed component 50.
[0027]
In the first embodiment, the case where the amount of air blown by the circulation fan as the circulation means is about 20 times the amount of air supplied by the air duct as the supply means has been described as an example. It may be between 30 times, more preferably 20 to 25 times.
[0028]
Moreover, in said 1st Embodiment, although the somewhat large thing was illustrated and demonstrated concretely about the ventilation duct and suction duct as a supply means, in order to achieve size reduction of the vaporization degreasing apparatus whole, These may be reduced in size, and is not limited to the above embodiment.
[0029]
Furthermore, in the said 1st Embodiment, although the thin strip steel was taken as an example as a process target object, it demonstrated concretely, For example, the processed product of a plate-shaped body is good also as a process target object, The said 1st implementation. The form is not limited. In the case where the object to be treated is a plate-like body, it is preferable to provide the circulation means on both sides (up and down) of the plate-like body in consideration that the air blown from the circulation means is bounced back to the plate-like body.
[0030]
【The invention's effect】
As described above, according to the vaporizing and degreasing apparatus of the present invention, the line speed can be maintained and the size can be reduced, vaporization and degreasing can be performed at a lower temperature and in a shorter time than conventional methods, and the removal of high-boiling oils and fats can be supported. Has an excellent effect.
[Brief description of the drawings]
1 is a schematic perspective view of a vaporizer degreasing device according to the first embodiment.
2 is a cross-sectional view taken along the line 2-2 in FIG.
3 is a cross-sectional view taken along the line 3-3 in FIG.
Figure 4 is a schematic perspective view of a vaporizer degreasing device according to the second embodiment.
5 is a cross-sectional view taken along the line 5-5 in FIG.
6 is a cross-sectional view taken along the line 6-6 in FIG.
[Explanation of symbols]
10 Vaporization degreasing equipment 12 Steel strip (ultra-thin foil (object to be treated))
14 box
15 Opening (entrance)
16 Opening (exit part)
18 Winding roller 18A Winding portion 20 Air duct (supply means)
23 Extraction unit 24 Circulation fan (circulation means)
26 Heat exchanger

Claims (4)

A box body provided on a transfer line of the processing object, and provided with an inlet portion and an outlet portion of the processing object ;
A supply means which is provided on the outlet side in the box and takes heated air to the vicinity of the outlet in the box;
Provided on the inlet side of the box body, and a take-out portion for exhausting to eject the air of the box body to the outside of the apparatus,
In the box body, the heating air sent from the supply means is provided in an air passage that passes the heated air to the take-out portion side, and is arranged along the transfer line, and takes in the air in the box body and blows it on the object to be processed. And a plurality of circulation means for spraying an air amount larger than the supply air amount by the supply means at a higher speed than the supply means, and evaporating the fats and oils on the processing object,
The vaporization degreasing apparatus characterized by having. The processing object is an ultrathin foil,
A winding roller that is arranged in the box and guides the ultrathin foil by winding it;
2. The vaporizing and degreasing apparatus according to claim 1, wherein the circulating means takes in air in the box and blows the air onto the ultrathin foil of the roller winding portion of the winding roller. The vaporizing and degreasing apparatus according to claim 2, wherein the winding roller is wound and guided in a state in which the ultrathin foil is folded back in a zigzag shape. A heat exchanger is disposed in the box adjacent to each of the plurality of circulation means, and the heat exchanger takes in and heats the air in the box, and the circulation means is the heat exchanger. The vaporized degreasing apparatus according to any one of claims 1 to 3, wherein air heated by the air is blown onto the object to be treated.

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