CN109909197B - Floating cleaning device for powder on back surface of plate strip sprayed coating and electrostatic powder spraying device - Google Patents
Floating cleaning device for powder on back surface of plate strip sprayed coating and electrostatic powder spraying device Download PDFInfo
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- CN109909197B CN109909197B CN201910159352.4A CN201910159352A CN109909197B CN 109909197 B CN109909197 B CN 109909197B CN 201910159352 A CN201910159352 A CN 201910159352A CN 109909197 B CN109909197 B CN 109909197B
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Abstract
The invention discloses a floating powder cleaning device for the spraying back surface of a plate strip and an electrostatic powder spraying device. This floating cleaning device of slab band spraying back powder includes: the floating roller brush is arranged on the back surface of the plate strip in a spraying manner and is in contact with the back surface of the plate strip, and the rotating circumferential tangential direction of the floating roller brush is opposite to the running direction of the plate strip; two ends of a rotating shaft of the floating roller brush are respectively arranged on independent floating follow-up mechanisms to float along with the floating of the plate strip, so that the bristles of the floating roller brush are always kept in contact with the back surface of the plate strip for spraying; the floating roller brushes comprise two edge floating roller brushes which are respectively arranged at two sides of the plate strip; the outer edges of the edge floating roller brushes exceed the edges of the strip where the edge floating roller brushes are respectively located, and the rotation axis of the edge floating roller brushes forms an angle which is larger than 0 degree and smaller than 90 degrees with the running direction of the strip. The device can ensure that the brush hair of the roller brush is always contacted with the back surface of the plate strip for spraying; and the powder at the end part of the edge of the plate strip can be prevented from being brushed away to lose the protection of a paint film.
Description
Technical Field
The invention relates to the field of electrostatic powder spraying, in particular to a floating powder cleaning device for the spraying back surface of a plate strip and an electrostatic powder spraying device.
Background
At present, most of color-coated plates in China adopt a mode of coating plates and coils by solvent type liquid paint. The production line for carrying out powder continuous electrostatic spraying on the intermittent steel plate, the aluminum plate or the steel coil and the aluminum coil is less.
In the case of the electrostatic powder-sprayed intermittent sheet and the sprayed continuous rolled sheet, since the sheet and the roll have large areas, the sprayer is required to simultaneously spray a large amount of powder toward the sheet surface. This requires the use of large quantities of compressed air for powder spraying. Because most of the spraying devices are basically vertical to the plate surface and the rolling surface, the sprayed compressed air carries the electrostatic powder to be vertically sprayed to the surface of the steel plate. Most of the powder is attached to the surface of the plate roll, and the powder which is not attached to the surface of the plate roll is pressed by compressed air and can horizontally move along the two sides of the width of the surface of the plate strip to the edge of the width of the plate (strip). At the same time, the edge of the sprayed plate surface is sprayed with powder by a sprayer.
When floating over the edge, the floating powder will be rolled back to the other side of the plate strip, i.e. the edge of the back of the plate strip, i.e. the edge of the other side which is not sprayed, due to gas flow. In addition, in the whole spraying process, a little powder of the sprayed surface is more or less adhered to the other side of the non-sprayed surface of the plate strip and in the whole width range.
And the sprayer is provided with a high-voltage electrostatic electric field, so that the sprayed powder carries charges. The sprayed plate (belt) is grounded, so the powder sprayed by the sprayer and carrying charges is equivalent to the positive (or negative) pole of the power supply, and the sprayed plate (belt) is equivalent to the zero pole. Due to the attraction of the electric field, the powder which is sprayed by the sprayer and carries charges is easily combined with the surface of the sprayed plate (belt) and is adhered to the surface of the plate (belt); and the charged powder adheres more readily to the plate (strip) where the electric field strength is present. Since the electric field is much stronger at the point than at the smooth point for a metal surface, the electric field strength is strongest at the edge of the plate (strip) shaped like a "knife edge" point for the plate (strip) being sprayed. The charge-carrying powder is more likely to collect toward the plate (belt) edges. The powder is adsorbed on the other side of the strip due to the relatively large electric field, in addition to the powder that is rewound at the side to the other side of the strip due to the air flow.
When the powder with the color is sprayed on the other side of the plate surface and the strip surface, the powder with the color attached to the other side and the middle part of the surface which is not sprayed needs to be removed in time. So as to avoid the color mixing phenomenon that the two color powders are mixed when the other surface which is not sprayed is sprayed with the other color powder.
Therefore, in order to solve the above problem, a cleaning device is provided on the other side of the painting surface. As shown in fig. 1 and 2, there is a rotary brushing device, i.e. a roller brush 3, disposed on the other side (the side 4 where the plate strip is not coated) of the coated surface of the coated plate strip 2, and the roller brush 3 rotates in the opposite direction (the contact position between the brush and the plate surface, the running direction of the brush end is opposite to the running direction of the plate surface, and the tangential direction 5 of the rotation circumference of the roller brush indicated in fig. 1 is opposite to the running direction 1 of the plate strip), so as to brush off the side surface of the coated plate strip where the powder is not coated, whether the powder is adhered to the edge or the middle, and collect the powder brushed off by other devices. The roller brush of this type is one or more. The rotation axis of each brush roller is parallel to the plate belt surface and is vertical to the running direction of the plate belt. And the roller brush axis is stationary.
The device has the following defects: (1) because the rotation axis of the roller brush is vertical to the running direction of the plate strip, and the length of the roller brush with the brush hair is larger than the width of the plate strip, the plane formed by the rotation of each brush hair on the roller brush is parallel to the running direction of the plate strip. When powder is attached to the edge and the middle of the non-powder-coated surface of the brushing and sweeping plate surface by the roller brush, the brush bristles with the length being larger than or equal to the width of the plate strip can scrape the end part of the edge of the plate strip, so that the powder attached to the end part of the edge of the plate strip due to an electric field is scraped off, no powder is attached to the end part of the edge of the plate strip, the end part of the edge of the baked electrostatic powder color-coated plate is not protected by a paint film, the end part of the edge of the plate strip is easy to rust in the engineering use process, the use performance of the color-. (2) The plate surface is floated up and down due to tension adjustment or the plate shape and equipment are deviated in the running process of the plate strip, namely the central line of the plate strip deviates from the theoretical central line on which the plate strip is supposed to be positioned. In practical engineering application, a tension roller is adopted to adjust the tension of the plate strip, and a deviation correcting device is adopted to correct the central line of the plate strip back to the theoretical central line. In the process of adjusting tension variation and correcting deviation, the plate belt can float up and down on the original running plane integrally or on the single side of the plate belt. When the plate belt floats upwards, the back surface of the plate belt sprayed by the plate belt is lifted away from the roller brush, and the brush hair of the roller brush cannot brush the back surface, namely the whole plate belt cannot be brushed or the single side of the plate belt cannot be brushed. The powder sprayed on the front surface is still adhered to the local part of the back surface of the plate strip, and in the next back surface spraying link, if the colors of the powder sprayed on the back surface are different, the color mixing is caused, so that the plate strip is unqualified and used for downshifting, or becomes waste.
Disclosure of Invention
In order to solve the technical problems, the invention provides a floating powder cleaning device for the spraying back surface of a plate strip and an electrostatic powder spraying device.
For convenience of description, the invention uses the abbreviation "strip", and the strip refers to a plane discontinuous steel plate (including aluminum-plated and zinc-plated steel plates), an aluminum plate and other non-ferrous metal plates, a steel coil (including aluminum-plated and zinc-plated steel coils) (strip), an aluminum coil and other non-ferrous metal (strip), and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a floating cleaning device for powder on the back surface of a plate strip sprayed by the plate strip, which comprises: the floating roller brush is arranged on the back surface of the plate strip in a spraying manner and is in contact with the back surface of the plate strip, and the rotating circumferential tangential direction of the floating roller brush is opposite to the running direction of the plate strip; two ends of a rotating shaft of the floating roller brush are respectively arranged on independent floating follow-up mechanisms to float along with the floating of the plate strip, so that the bristles of the floating roller brush are always kept in contact with the back surface of the plate strip for spraying;
the floating roller brushes comprise two edge floating roller brushes which are respectively arranged at two sides of the plate strip; the outer edges of the edge floating roller brushes exceed the edges of the strip where the edge floating roller brushes are respectively located, and the rotation axis of the edge floating roller brushes forms an angle which is larger than 0 degree and smaller than 90 degrees with the running direction of the strip.
The rotating circumferential tangential direction of the floating roller brush is opposite to the running direction of the plate strip, namely the floating roller brush brushes in a reverse direction relative to the running direction of the plate strip. The outer edge of the edge floating roller brush exceeds the edge of the plate strip, so that the edge of the plate strip can be brushed; the rotation axis of the color-coated plate strip forms an angle which is larger than 0 degree and smaller than 90 degrees with the running direction of the plate strip, namely the brushing direction of the edge floating roller brush is not parallel to the running direction of the plate strip, so that powder at the edge end part of the plate strip cannot be swept or scraped off, the color-coated plate strip cannot be influenced, the edge end part of the baked electrostatic powder color-coated plate is protected by a paint film, the edge end part of the plate strip is not easily rusted in the engineering use process, and the service performance of the color-coated plate is ensured.
In a preferred embodiment of the present invention, the floating follower can apply a pushing force to the floating roller brush to float the floating roller brush. The pushing force can be generated by means of a spring, a cylinder or a counterweight, an electromagnetic force type.
In another preferred aspect of the present invention, the floating cleaning device for powder on the back surface of the plate strip spraying further comprises: the device comprises a plate belt height detection device and a height adjusting control unit;
the height adjusting and controlling unit is used for receiving the plate strip height detected by the plate strip height detecting device, and when the plate strip height changes, the height adjusting and controlling unit can control the floating follower mechanism to drive the floating roller brush to float for the same distance so as to keep the bristles of the floating roller brush in contact with the back surface of the plate strip spraying all the time.
Preferably, the inner edges of the two edge floating roller brushes are staggered with each other to sweep the whole strip spraying back.
Preferably, the two edge floating roller brushes are in one group, and the floating roller brushes comprise one or more groups; preferably 1-4 groups.
Preferably, the floating roller brush further comprises a middle floating roller brush, and the two side edges of the middle floating roller brush are respectively staggered with the inner side edges of the two side floating roller brushes so as to clean the back surface of the whole plate belt.
Preferably, the rotation axis of the intermediate floating roller brush is perpendicular to the running direction of the plate strip.
Preferably, the two edge floating roller brushes and the middle floating roller brush are in one group, and the floating roller brushes comprise one or more groups; preferably 1-4 groups.
Preferably, the rotation axis of the edge floating roller brush forms an angle of more than 45 degrees and less than 80 degrees with the running direction of the strip.
Preferably, the rotation axis of the floating roller brush is parallel to the plate surface of the plate strip.
The invention also provides a powder electrostatic spraying device which comprises the above plate belt spraying back powder floating cleaning device.
Preferably, the electrostatic powder spraying device includes: the device comprises a spraying room and a carrier roller which is positioned outside the spraying room and used for supporting the plate belt;
the spraying rooms are horizontally, vertically or obliquely arranged and comprise a plate strip running inlet and a plate strip running outlet; the floating roller brush is positioned between the plate belt running outlet and the supporting roller.
When the floating cleaning device for powder on the sprayed surface of the plate strip brushes the surface which is not sprayed on the plate strip, the plate strip can be influenced by tension change and the deviation correcting device to integrally float and lift or float and lift on the edge part of one side, the floating roller brush also lifts along with the plate strip, the brush hair of the floating roller brush is always in contact with the back surface of the plate strip, the powder on the sprayed bottom surface of the plate surface can be brushed and cleaned all the time, the back surface of the plate strip is free from color mixing, and the service performance of a color-coated plate is ensured. Meanwhile, when the floating cleaning device for the powder on the sprayed back surface of the plate strip brushes the surface of the plate strip which is not sprayed, the floating cleaning device can clean the powder attached to the surface, meanwhile, the powder on the edge end part of the plate strip is not affected and cannot be swept or scraped, so that the edge end part of the baked electrostatic powder color-coated plate is protected by a paint film, the edge end part of the plate strip is not easily rusted in the engineering use process, and the use performance of the color-coated plate is ensured.
Drawings
Figure 1 is a prior art solution, a single roller brush brushing arrangement.
Fig. 2 is a schematic sectional view in the direction a of fig. 1.
Fig. 3 is a powder floating sweeping device in a preferred embodiment of the present invention.
Fig. 4 is a schematic view of the direction B shown in fig. 3.
Fig. 5 is a schematic view of fig. 3 taken along direction C.
Fig. 6 is a powder floating sweeping device in another preferred embodiment of the present invention.
Fig. 7 is a schematic view of fig. 6 taken along direction D.
Description of reference numerals:
1-running direction of the plate belt; 2, plate and strip; 3, rolling and brushing; 4-spraying the back surface of the plate belt; 5-the rotation direction of the roller brush; 6-included angle between the axis of the roller brush and the running direction of the plate strip; 7-edge floating roller brush; 8-middle floating roller brush; 9-a floating follower mechanism; 10-plate belt operation inlet; 11-spraying a room; 12-a strip running outlet; 13-carrying roller.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The overall inventive concept of the invention is as follows: the rotation axis of the roller brush is always in contact with the back surface of the plate strip when the plate strip is lifted and floated through a floating follow-up mechanism, so that the brush hair cannot be separated from the back surface of the plate strip due to the floating of the plate strip when the roller brush is rotated; the plate belt falls back and descends after floating, the brush hair of the roller brush still contacts the back of the plate belt all the time, the roller brush can be ensured to contact the back of the plate belt at any time and brush and sweep cleanly, and the service performance of the color-coated plate is ensured. Meanwhile, the rotation axis of the roller brush at the edge of the plate strip is obliquely arranged, so that when the roller brush rotates, the brush hair can not brush and sweep the powder adsorbed at the edge end of the plate strip, the baked edge end of the plate strip is protected by a paint film, the edge end of the plate strip is prevented from being rusted easily in the engineering use process, and the service performance of the color-coated plate is ensured.
Therefore, the overall scheme provided by the invention is as follows: a floating cleaning device for powder on the back surface of plate strip spraying comprises: the floating roller brush is arranged on the back surface of the plate strip in a spraying manner and is in contact with the back surface of the plate strip, and the rotating circumferential tangential direction of the floating roller brush is opposite to the running direction of the plate strip; two ends of a rotating shaft of the floating roller brush are respectively arranged on independent floating follow-up mechanisms to float along with the floating of the plate strip, so that the bristles of the floating roller brush are always kept in contact with the back surface of the plate strip for spraying; the floating roller brushes comprise two edge floating roller brushes which are respectively arranged at two sides of the plate strip; the outer edges of the edge floating roller brushes exceed the edges of the plate strips at which the edge floating roller brushes are respectively arranged, the rotation axes of the edge floating roller brushes are parallel to the plate surfaces of the plate strips, and an angle which is larger than 0 degree and smaller than 90 degrees is formed between the rotation axes and the running direction of the plate strips.
The floating follow-up mechanism can directly apply thrust to the floating roller brush to enable the floating roller brush to float, and can also detect the height of the plate strip and control the floating roller brush to float at the same height so that the brush hair of the floating roller brush is always in contact with the surface of the plate strip to be sprayed. Wherein, when the mode through measuring height, this slab band spraying back powder cleaning device that floats still includes: the device comprises a plate belt height detection device and a height adjusting control unit; the height adjusting and controlling unit is used for receiving the plate strip height detected by the plate strip height detecting device, and when the plate strip height changes, the height adjusting and controlling unit can control the floating follower mechanism to drive the floating roller brush to float for the same distance so as to keep the bristles of the floating roller brush in contact with the back surface of the plate strip spraying all the time.
The floating roller brush may include only two edge floating roller brushes, or may include two floating edge floating roller brushes and a middle floating roller brush. When only two edge floating roller brushes are arranged, the inner side edges of the two edge floating roller brushes are staggered with each other to clean the whole plate belt spraying back. When the device comprises two edge floating roller brushes and a middle floating roller brush, the two side edges of the middle floating roller brush are respectively staggered with the inner side edges of the two edge floating roller brushes so as to clean the back surface of the whole plate strip. Preferably, the rotation axis of the intermediate floating roller brush is perpendicular to the running direction of the plate strip.
In addition, two edge floating roller brushes or two edge floating roller brushes and a middle floating roller brush are in one group, and the floating roller brushes can comprise one or more groups, preferably 1-4 groups.
Furthermore, in order to ensure that the length of the edge floating roller brush is reduced as much as possible while achieving the object of the present invention, the rotation axis of the edge floating roller brush preferably forms an angle of more than 45 ° and less than 80 ° with the running direction of the strip.
According to the structure of the two-floating roller brush or the three-floating roller brush, the rotation axis of the edge floating roller brush positioned on the edge part has a certain angle with the running direction of the plate strip, the roller brush rotates reversely on the side of the plate strip which is not coated, and brush sweeping is carried out by utilizing the brush hair; the rotating circumferential tangent direction of the edge floating roller brush is at the position contacted with the plate surface, the brush hair running direction is approximately opposite to the plate belt running direction, the brush hair running and brushing direction contacted with the plate surface is brushing from the middle part of the plate belt to the outer side of the plate belt, the movement track of the brush hair, namely the rotating running direction of the brush hair can not contact with the end part of the width edge of the plate belt, so that the powder adsorbed on the end part of the width edge of the plate belt and provided with static electricity can not be brushed away. The end part of the edge of the baked plate strip is protected by a paint film, so that the rust resistance of the end part of the edge of the plate strip is improved.
When two edge floating roller brushes or three floating roller brushes, namely a middle floating roller brush and two edge floating roller brushes, are adopted, independent floating follow-up mechanisms are adopted at two ends of a rotating shaft of each floating roller brush, one end of two ends of each roller brush can be lifted independently in a follow-up and floating mode, and the two ends of each roller brush can be lifted together, so that the brush hairs of the roller brushes can always contact and continuously brush and sweep all or one-side attached powder on the back of the plate strip in the integral lifting of the plate strip or the lifting of one edge of the single side, and the leakage is avoided.
Specifically, the present invention provides a preferred embodiment, as shown in fig. 3 to 5, the preferred embodiment provides an electrostatic powder spraying device, which includes a spraying room 11 and a supporting roller 13 located outside the spraying room and used for supporting the plate strip 2;
the spraying room 11 comprises a strip running inlet 10 and a strip running outlet 12; the floating roller brush is positioned between the strip running outlet 12 and the carrier roller 13. The floating roller brush is arranged on the plate belt spraying back surface 4 and is in contact with the plate belt spraying back surface.
The floating roller brushes comprise two edge floating roller brushes 7 which are staggered front and back, the inner edges of the two edge floating roller brushes are staggered with each other, and the outer edges of the two edge floating roller brushes exceed the edges of the plate strip 2, so that the whole plate strip spraying back surface 5 can be cleaned. The two ends of each floating brush roller are respectively installed on an independent floating follow-up mechanism 9, when the plate belt moves due to a deviation correcting mechanism, the plate belt tilts after the single edge of the plate belt tilts, or the plate belt integrally rises due to tension change, the floating follow-up mechanisms 9 at the two ends of the floating roller brush can independently control the two ends of the roller brush to float independently, bristles of the floating roller brush can be in contact with the sprayed surface of the plate belt all the time, and the floating follow-up mechanisms cannot be missed.
As shown in fig. 5, the rotation axis of the edge floating roller brush 7 is parallel to the plate surface of the plate strip 2; and the axis of rotation thereof forms an angle of 75 deg. with the direction of travel of the strip, as indicated at 6 in figure 4. The rotation direction of the roller brush is 5 marked in figure 3, the movement direction of the plate belt is 1 marked in figure 3, and the tangential directions of the roller brush and the plate belt are opposite.
As shown in fig. 6 and 7, the present invention provides another preferred embodiment in which the roller brushes comprise intermediate floating roller brushes 8 having their axes of rotation perpendicular to the direction of travel 1 of the strip. The two side edges of the middle floating roller brush 8 are respectively staggered with the inner side edges of the two side floating roller brushes 7 so as to clean the whole plate belt spraying back 4. It will be appreciated by those skilled in the art that the axis of rotation of the intermediate floating roller 8 may also be non-perpendicular to the direction of travel 1 of the strip, provided that it is ensured that the two side edges thereof are staggered with respect to the two edge floating roller 7.
When the middle floating roller brush and the two edge floating roller brushes are adopted, the two ends of each brush roller are respectively provided with an independent floating follow-up mechanism 9, so that the floating roller brushes float along with the floating of the plate strip, and the bristles of the floating roller brushes are ensured to be always in contact with the surface of the plate strip which is not sprayed.
In the preferred embodiment above, the roller brushes shown in the figures are all a set of rollers, and as will be readily appreciated by those skilled in the art, multiple sets of roller brushes, preferably 1-4 sets, may be provided in order to enhance the cleaning of the brush sweep. In the preferred embodiment of the invention, the rotation axes of the floating roller brushes are all parallel to the plate surface of the plate strip, and as is easily understood by a person skilled in the art, the rotation axes of the floating roller brushes are not necessarily parallel to the plate surface of the plate strip, and the rotation axes of the floating roller brushes are leveled under the action of the follow-up floating mechanism and keep the brush hairs of the floating roller brushes in contact with the back surface of the plate strip spraying at all times.
The independent floating follow-up mechanisms arranged at the two ends of the roller brush can respectively and independently push the two ends of the axis of the roller brush, so that certain contact force between the roller brush and the back of the plate strip is ensured. When the whole plate strip rises or the edge part of one side rises and the contact force between the whole or single side of the roller brush and the back surface of the plate strip is reduced or disappears, the thrust drives the whole or single side of the roller brush to rise through the device, so that the whole or single side of the roller brush is always in contact with the back surface of the plate strip to maintain the contact force, and the brush hair of the roller brush is ensured to be constantly in contact with the back surface of the plate strip. When the plate strip falls back and falls down, the contact force between the roller brush and the back of the plate strip is increased, in order to maintain the original contact force, the thrust is reduced, the roller brush falls down, the contact force between the brush hair and the back of the plate strip is maintained, and the continuous brushing is guaranteed to be well realized. The thrust of the device can be generated and maintained by utilizing a spring, a cylinder or a balance weight and an electromagnetic force, and the requirement that the roller brush is contacted with the back of the plate belt constantly is met. The floating mechanism may be of a swing type as shown in fig. 3, 4 and 6, or of a straight type.
The independent floating follow-up mechanisms arranged at the two ends of the roller brush can inform and drive the roller brush to lift to the same height in a plate strip height detection mode and contact with the back of the plate strip all the time. A plate strip height detection device and a height adjusting control unit are arranged in the plate strip width range. When the plate belt is integrally lifted or the single-side edge part is lifted, the height detection device detects the lifted integral height or the single-side height, and the height adjusting control unit controls the floating follow-up mechanism to drive the floating roller brush to float for the same distance after receiving the signal so as to keep the bristles of the floating roller brush to be in contact with the back surface of the plate belt spraying all the time. The plate belt is lowered, and the continuous brushing is guaranteed to be well realized.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (9)
1. The utility model provides a board area spraying back powder cleaning device that floats which characterized in that includes: the floating roller brush is arranged on the back surface of the plate strip in a spraying manner and is in contact with the back surface of the plate strip, and the rotating circumferential tangential direction of the floating roller brush is opposite to the running direction of the plate strip; two ends of a rotating shaft of the floating roller brush are respectively arranged on independent floating follow-up mechanisms to float along with the floating of the plate strip, so that the bristles of the floating roller brush are always kept in contact with the back surface of the plate strip for spraying;
the floating roller brushes comprise two edge floating roller brushes which are respectively arranged at two sides of the plate strip; the outer edges of the edge floating roller brushes exceed the edges of the strip where the edge floating roller brushes are respectively located, and the rotation axis of the edge floating roller brushes and the running direction of the strip form an angle which is larger than 0 degree and smaller than 90 degrees;
this floating cleaning device of slab band spraying back powder still includes: the device comprises a plate belt height detection device and a height adjusting control unit;
the height adjusting and controlling unit is used for receiving the plate strip height detected by the plate strip height detecting device, and when the plate strip height changes, the height adjusting and controlling unit can control the floating follower mechanism to drive the floating roller brush to float for the same distance so as to keep the bristles of the floating roller brush in contact with the back surface of the plate strip spraying all the time.
2. A panel tape spray back surface powder floating cleaning device according to claim 1, wherein the floating following mechanism can apply a pushing force to the floating roller brush to float.
3. A panel strip spray back powder floating cleaning apparatus as claimed in claim 1 or claim 2, wherein the inner edges of the two edge floating roller brushes are staggered to clean the entire panel strip spray back.
4. The floating cleaning device for powder on the back surface of a plate strip sprayed according to claim 3, wherein the two edge floating roller brushes are in one group, and the floating roller brushes comprise one or more groups.
5. A floating cleaning device for powder on the back surface of a strip as claimed in claim 1 or 2, wherein the floating roller brush further comprises a middle floating roller brush, and two side edges of the middle floating roller brush are respectively staggered with the inner side edges of the two side floating roller brushes to clean the whole strip to the back surface.
6. The floating sweeping device for powder on the back surface of a strip coating of claim 5, wherein the rotation axis of the middle floating roller brush is perpendicular to the running direction of the strip.
7. The floating cleaning device for powder on the back surface of a plate strip sprayed according to claim 5, wherein the two edge floating roller brushes and the middle floating roller brush are in one group, and the floating roller brushes comprise one or more groups.
8. The floating cleaning device for powder on the back surface of a strip sprayed by claim 1, wherein the rotation axis of the edge floating roller brush forms an angle of more than 45 degrees and less than 80 degrees with the running direction of the strip, and/or the rotation axis of the floating roller brush is parallel to the surface of the strip.
9. An electrostatic powder spraying device comprising a floating powder cleaning device for the back surface of the plate strip spraying of any one of claims 1 to 8;
the electrostatic powder spraying device includes: the device comprises a spraying room and a carrier roller which is positioned outside the spraying room and used for supporting the plate belt;
the spraying rooms are horizontally, vertically or obliquely arranged and comprise a plate strip running inlet and a plate strip running outlet; the floating roller brush is positioned between the plate belt running outlet and the supporting roller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910159352.4A CN109909197B (en) | 2019-03-04 | 2019-03-04 | Floating cleaning device for powder on back surface of plate strip sprayed coating and electrostatic powder spraying device |
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| CN201910159352.4A CN109909197B (en) | 2019-03-04 | 2019-03-04 | Floating cleaning device for powder on back surface of plate strip sprayed coating and electrostatic powder spraying device |
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| CN109909197B true CN109909197B (en) | 2021-06-11 |
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| EP0160810A1 (en) * | 1984-04-02 | 1985-11-13 | Ransburg-Gema AG | Enclosure for powder coating |
| CN201143476Y (en) * | 2007-10-26 | 2008-11-05 | 浙江华立涂装有限公司 | Novel powder spraying house |
| CN202741443U (en) * | 2012-08-20 | 2013-02-20 | 攀钢集团攀枝花钢钒有限公司 | Blowing mechanism for strip steel |
| CN104588251A (en) * | 2015-02-13 | 2015-05-06 | 北京京诚之星科技开发有限公司 | Powder covering and sweeping device during electrostatic powder spraying |
| CN105414069A (en) * | 2015-12-09 | 2016-03-23 | 北京天诚同创电气有限公司 | Cleaning device |
| CN207806028U (en) * | 2017-12-25 | 2018-09-04 | 张家口宣化泰达机械设备制造有限公司 | photovoltaic solar panel cleaning vehicle |
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