CN209918115U - Electrostatic guiding device for mesh thin belt and electrostatic powder spraying device - Google Patents

Abstract

The utility model discloses a mesh takes static guider and powder electrostatic spraying device. The utility model discloses a thin static guiding device that takes of mesh for in the intermittent or continuous powder electrostatic spraying of slab band, include: the metal plate strip with the mesh hollows is arranged in the spraying range along the running direction of the plate strip to be sprayed; the metal plate is grounded and positioned on two sides of the running direction of the sprayed plate belt and used for adsorbing powder drifted out of the edge of the sprayed plate belt in powder electrostatic spraying. The utility model discloses a thin static guiding device that takes of mesh can reduce the slab band spraying face both sides limit portion electric field intensity of operation as far as possible, strives for the powder with being sprayed the slab band simultaneously to reduce the sprayer spun powder that carries the static charge and in slab band both sides edge part's the adhesion volume, reduced the spraying curb plate after toasting area edge film and show the bodiness phenomenon. The discontinuous steel plate and the aluminum plate are stacked in multiple layers and then are flat, and the steel coil and the aluminum coil are curled for multiple circles and then do not deform and stick up edges.

Description

Electrostatic guiding device for mesh thin belt and electrostatic powder spraying device

Technical Field

The utility model relates to a powder electrostatic spraying field, concretely relates to mesh takes electrostatic induction system and powder electrostatic 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.

For intermittent steel plates and aluminum plates, a plurality of steel plates and aluminum plates with the same length and width need to be stacked in a multilayer manner in order for convenient packaging and transportation of baked color-coated plate finished products after powder spraying, and the number of the steel plates and the aluminum plates reaches hundreds to thousands. The thickness of the stacked multilayer boards is required to be consistent, the thickness of the powder coating sprayed on each board is required to be consistent, otherwise, the thickness of the stacked boards is uneven in the length and width range, the stacked boards cannot be neatly and reasonably packaged uniformly, and the local deformation of the boards can cause disqualification of the sprayed board products due to the uneven height.

Similarly, for steel coils (strips) or aluminum coils (strips), because the number of turns of coils (i.e., the number of layers) wound into a coil (strip) is hundreds to thousands, if the thickness of the powder coating sprayed on the coil (strip) is inconsistent, the constant-width steel coils wound together have uneven thickness within the width range, the coil diameter is inconsistent, and the appearance is unsightly; in addition, the multi-layer plates which are rolled together are tightly wound due to the fact that the plates (strips) bear large tension in the rolling process, and the plates (strips) which are subsequently uncoiled and expanded are deformed in a convex-concave mode due to the fact that steel coils are uneven in a convex-concave mode, so that the multi-layer plates are not allowed to be used as waste.

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.

The sprayer has high voltage electrostatic field to make the sprayed powder carry electric charge. 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. Therefore, for powder electrostatic spraying, the powder absorbed by the edge of the interrupted steel plate and the edge of the steel coil (strip) is more, so that the paint film at the edge (within 1-2 mm from the edge) of the plate (strip) is obviously thickened after heating and baking, and is much thicker than the surface of the plate.

For the intermittent steel plates and the aluminum plates, hundreds to thousands of steel plates are required to be stacked neatly before packaging and transportation; for steel or aluminum coils, where thousands of layers are wound into a coil, the problem of the coil width being thicker at the edges than in the middle section is prominent! Namely, the multi-layer overlapped intermittent steel plates and aluminum plates are warped at the upper edge part of the width and concave in the middle, and cannot be packaged orderly; for steel coils or aluminum coils, edge raised middle concave parts are also obviously generated in the width direction, so that the coils are seriously deformed! In the color coating industry, the color coating is judged to be waste.

In order to reduce the powder floating out of the edge of the plate strip and reduce the adhesion of the floating powder on the edge of the plate (strip), a porous (pipe) suction device is arranged at the edge of the plate (strip) to be sprayed. As shown in fig. 1 and 2, a plurality of powder suction pipes 101 parallel to each other are arranged in a row at a short distance along the edge of the coated sheet strip 2, perpendicular to the running direction 103 of the coated sheet strip. The plurality of powder suction pipes 101 are inserted into a negative pressure main pipe 102.

There are a number of disadvantages with this arrangement. Firstly, as the caliber of the powder suction pipe cannot be set too large, otherwise, the negative pressure drop, the suction force and the powder suction efficiency are low or the diameter of the main negative pressure pipe needs to be very large, and a large pipeline is not suitable to be arranged in the spray room. The floating range of the powder raised by the plate and the edge curling part is larger and far larger than the caliber of the powder suction pipe, so that most of the floating powder cannot be sucked into the powder suction pipe, namely the powder suction effect and the powder suction efficiency of the powder suction pipe are poor. And secondly, the powder suction pipes are arranged in parallel along the main negative pressure pipe, and the negative pressure generating ports of the main negative pressure pipe can be only arranged at two ends of the main pipe or a plurality of negative pressure generating ports are arranged in a limited manner along the length of the main pipe. The negative pressure at the pipe openings of the powder suction pipes along the length direction of the plate strip is different in size, and the difference is large. The uneven powder suction capability along the length direction of the plate strip can be seriously caused. Moreover, most of the prior continuous coil electrostatic powder spraying production lines enter a spraying room in a state that the strip belt is horizontal, and because the continuously sprayed steel coil or aluminum coil horizontally enters the spraying room, the strip belt cannot be provided with a carrier roller or a lifting device, the strip belt naturally hangs and is not straight in the spraying process in the spraying room; and the strip slightly floats in the running process, and for the powder suction pipe openings arranged in parallel on the main negative pressure pipe, the pipe material is a hard pipe, so that the powder suction pipe openings are difficult to be aligned with the edge part of the suspended strip, and the powder suction efficiency is reduced. Thirdly, the electric field at the edge of the plate (strip) cannot be reduced by the method, and the problem that the paint film at the edge of the plate is obviously thickened can hardly be effectively reduced.

Therefore, in order to solve the above problems, the electric field intensity at the edge of the plate (strip) to be sprayed is reduced, so that the powder adhering to the edge of the plate (strip) to be sprayed is remarkably reduced, and the occurrence of the above problems is reduced or alleviated.

SUMMERY OF THE UTILITY MODEL

Based on the above background art, the utility model provides a mesh takes static guider and powder electrostatic spraying device. The electrostatic guiding device for the mesh thin belt is an auxiliary device in the continuous electrostatic powder spraying of a plane interrupted steel plate or an aluminum plate or a steel coil or an aluminum coil. The mesh thin-belt electrostatic guiding device is used in continuous powder electrostatic spraying of the plate belt, and can reduce the electric field intensity of the edge parts at two sides of a running plate belt spraying surface as much as possible, so that the attachment amount of powder carrying electrostatic charges sprayed by a sprayer on the edge parts at two sides of the plate belt is reduced; meanwhile, the strong electric fields at the edges of the thin strips and the sharp edges of the mesh holes on the thin strips are used for striving for surrounding powder, so that the powder falling on the edges of the sprayed plate strip is reduced, and the phenomenon that the paint film on the edges of the sprayed side plate strip surface is obviously thickened after being baked is greatly reduced. The discontinuous steel plate and the aluminum plate are flattened during the multi-layer stacking packaging, and the steel coil and the aluminum coil are not deformed and do not stick up after being curled for a plurality of circles.

The utility model discloses in for the convenience of description, used and called for short "slab band", the slab band all indicate plane interrupted steel sheet, aluminum plate, coil of strip (area), aluminium book (area) etc..

In order to realize the above purpose, the utility model adopts the following technical scheme:

an aspect of the utility model provides a static guiding device is taken to mesh for in the intermittent or continuous powder electrostatic spraying of slab band, this static guiding device is taken to mesh includes: the metal plate strip with the mesh hollows is arranged in the spraying range along the running direction of the plate strip to be sprayed; the metal plate is grounded and positioned on the side surface of the sprayed plate in the running direction and used for adsorbing powder drifted out of the edge of the sprayed plate in powder electrostatic spraying.

Optionally, the metal plate strip is arranged at intervals in a single layer or multiple layers.

Preferably, the metal plate strip is arranged in a plurality of layers at intervals, and the plurality of layers are parallel.

Preferably, the multiple layers are arranged at equal intervals, and the intervals are 10-100 mm;

or the multiple layers are arranged at unequal intervals, and the intervals are not more than 100 mm.

Preferably, when the metal plate strip is arranged in a single layer, the vertical distance between the upper edge of one side, close to the sprayed plate strip, of the metal plate strip and the sprayed surface of the sprayed plate strip is 0-100 mm;

when the metal plate strip is arranged in a multi-layer interval mode, the vertical distance between the upper edge of one side, close to the sprayed plate strip, of the outermost layer of the metal plate strip and the sprayed surface of the sprayed plate strip is 0-100 mm. That is, when the coated sheet strip is hung horizontally, the outermost layer of the multi-layer metal sheet strip near one side edge of the coated sheet strip may be the same height as the coated sheet strip, or may be higher or lower than the coated sheet strip. When the sprayed plate strip is vertically suspended or obliquely placed, and so on.

Preferably, the thickness of one side of the metal plate strip close to the sprayed plate strip ranges from 0.1 mm to 2 mm; the thicker edge portions may be sharpened. Therefore, one side of the metal plate strip close to the sprayed plate strip can form a sharp enough edge point, so that the aims of competing for drift powder and reducing the electric field intensity of the edge of the sprayed plate strip are fulfilled.

Preferably, the length range of the metal plate strip is 0.5-50 m, so that the length range of the metal plate strip slightly exceeds the spraying range of the sprayed plate strip.

Preferably, the distance between the edges of the metal plate strip close to the edges of the sprayed plate strip is 10-100 mm. The metal plate strip is located near the side face of the sprayed plate strip, so that the aims of competing for drift powder and reducing the electric field intensity of the edge of the sprayed plate strip are fulfilled.

Preferably, the mesh thin-belt electrostatic guiding device comprises two groups of metal plates and belts which are positioned on two sides of the running direction of the sprayed plate and belt.

Preferably, the surface of the outermost layer of the single-layer or multi-layer long metal plate strip and the surface of the sprayed plate strip form an angle of-90 degrees to +90 degrees.

Preferably, both ends of the metal plate strip are fixed through fixing structures.

Preferably, two ends of the metal plate strip are connected with a vibration device; so as to shake off the electrostatic powder accumulated on the long metal plate strip in time.

Preferably, the mesh hollow area on the metal plate strip is 60% -95% of the area of the metal plate strip. The edges of the holes can be sharpened to increase the ability to compete for drift powder.

Preferably, when the metal plate strips are arranged in parallel in multiple layers, the multiple layers are same in mesh shape and size and are aligned.

The utility model discloses another aspect provides a powder electrostatic spraying device, take electrostatic induction system including above mesh.

Drawings

FIG. 1 is a schematic view of a negative pressure powder suction pipe structure used on two side edges of a plate belt in the prior art.

Fig. 2 is a schematic sectional view of fig. 1 taken along a direction a.

Fig. 3 is a schematic structural view (horizontal natural suspension) of the mesh thin belt electrostatic guiding device in a preferred embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of the sprayed sheet strip, metal strip and spray booth in the direction B of FIG. 3.

Fig. 5 is an installation view of the fixing structure at both ends of the metal plate strip shown in fig. 3.

FIG. 6 is a schematic view showing the installation of the vibration devices at both ends of the metal strip shown in FIG. 3.

Description of reference numerals:

101-a powder suction pipe; 102-negative pressure main pipeline; 103-running direction of the sprayed plate belt; 1-metal plate strip; 2-coated plate strip; 3, the distance between the edges of the metal plate strip and the sprayed plate strip which are close to each other is calculated; 4-a fixed structure; 5-a vibration device; 6-included angle between the metal plate strip surface and the sprayed plate strip surface on the section.

Detailed Description

In order to illustrate the invention more clearly, the invention is further described below with reference to 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 utility model discloses a utility model thinking does: arranging a metal plate strip with mesh hollows in the spraying range along the running direction of the sprayed plate strip, wherein the edge of the metal plate strip is equivalent to adding an additional blade-shaped tip near the edge of the sprayed plate strip, and the metal plate strip has strong electric field intensity and strong powder adsorption capacity; in addition, a plurality of meshes are hollowed out on the metal plate strip, the edges of the meshes are very sharp, the electric field intensity is very strong, and the metal plate strip can compete for floating powder with the edge of the sprayed plate strip together. In addition, because the edges of the metal plates are sharp and are close to each other, and the metal plates are grounded, weak current can be formed by air passing through the metal plates and the metal plates, and charges accumulated at the edges of the sprayed plates are absorbed, so that the electric field intensity of the edges of the sprayed plates is reduced, the powder adsorption capacity of the edges of the sprayed plates is reduced, and the attached powder quantity is also reduced. Therefore, the problem of thickening of the edge of the electrostatic powder spraying plate is well solved.

From this, the utility model provides an overall scheme does: an electrostatic guiding device for mesh thin strip for use in intermittent or continuous electrostatic powder coating of strip, comprising: the metal plate strip with the mesh hollows is arranged in the spraying range along the running direction of the plate strip to be sprayed; the metal plate is grounded and positioned on the side surface of the sprayed plate in the running direction and used for adsorbing powder drifted out of the edge of the sprayed plate in powder electrostatic spraying. If the sprayed sheet strip is in vertical, inclined or horizontal and horizontal overhang, the sheet metal strip arranged on the side surface is correspondingly in vertical, inclined or horizontal and approximately parallel with the same or approximately parallel to the overhang.

The metal plate strip is arranged at intervals in a single layer or multiple layers, and can be optionally arranged on one side or two sides of the sprayed plate strip.

When the two sides of the device are arranged, the device can be symmetrical or asymmetrical.

When the metal plate strip is arranged in a plurality of layers at intervals, the plurality of layers can be parallel. Meanwhile, the multiple layers can be arranged at equal intervals, the intervals are 10-100 mm, the multiple layers can also be arranged at unequal intervals, and the intervals are not more than 100 mm.

Preferably, the surface of the outermost layer of the single-layer or multi-layer metal plate strip and the surface of the sprayed plate strip form an angle of-90 degrees to +90 degrees, namely, the metal plate strip and the surface of the sprayed plate strip are parallel or form an angle within 90 degrees from top to bottom when viewed from the section perpendicular to the running direction of the plate strip.

Preferably, the vertical distance between the upper edge of one side of the outermost layer of the single-layer or multi-layer metal plate strip close to the sprayed plate strip and the sprayed surface of the sprayed plate strip is 0-100 mm. That is, when the coated sheet strip is hung horizontally, the upper edge of the side of the outermost layer of the multi-layer metal sheet strip close to the coated sheet strip may be equal to the coated sheet strip in height, or may be higher or lower than the coated sheet strip. The situation is similar when the strip of panel to be painted is suspended vertically or placed at an angle.

Preferably, the distance between the edges of the metal plate strip close to the edges of the sprayed plate strip is 10-100 mm.

Preferably, the length of the metal plate strip slightly exceeds the spraying range of the sprayed plate strip, and is 0.5-50 m. Preferably, the thickness of one side of the metal plate strip close to the sprayed plate strip is 0.1-2 mm, and the thicker edge part can be sharpened.

As for the fixing manner of the metal plate strip, fixing structures may be directly adopted at both ends in the extending direction thereof for fixing, or a vibration device may be adopted as a joining mechanism. When the sprayed plate strip is in a vertical state, a vibration device is not needed.

Preferably, the mesh hollow-out area on the metal strip is 60% -95% of the area of the metal strip. The edges of the holes can be sharpened to increase the ability to compete for drift powder.

Preferably, when the metal plate strips are arranged in parallel in multiple layers, the multiple layers are same in mesh shape and size and are aligned. When the sprayed sheet is hung horizontally, the meshes are aligned up and down.

Specifically, the present invention provides a preferred embodiment, as shown in fig. 3, a mesh thin belt electrostatic guiding device for use in intermittent or continuous electrostatic powder coating of a sheet belt, the mesh thin belt electrostatic guiding device comprising: the metal plate strip 1 with the mesh hollows is arranged in the spraying range along the running direction of the plate strip 2 to be sprayed; the metal plate strip 1 is grounded and is positioned on the side surface of the sprayed plate strip 2 in the running direction (namely two sides of the sprayed plate strip in the figure) and used for adsorbing powder drifted out by the edge of the sprayed plate strip in the powder electrostatic spraying.

As shown in fig. 3, the metal plate strip 1 comprises two groups located at two sides of the coated plate strip 2, wherein the two sides are symmetrically arranged; the sheet metal strip 1 may also be arranged to be single-sided or asymmetrical in a double-sided arrangement, depending on the particular spray conditions, as will be readily understood by those skilled in the art. In addition, while the strip to be painted in fig. 3 is in a horizontal natural overhang manner, those skilled in the art will appreciate that the strip to be painted may also be vertical, inclined or horizontal, and the strip of sheet metal may correspondingly be vertical, inclined or horizontal and approximately parallel thereto.

As shown in fig. 3, the sheet metal strip 1 is provided in two layers, and the two layers are parallel to each other, and the surfaces of the sheet metal strip 1 and the coated sheet metal strip 2 are parallel to each other, that is, the sections of the sheet metal strip 1 and the coated sheet metal strip 2 are parallel to each other as seen from direction B of fig. 3. As is easily understood by those skilled in the art, the metal plate strip 1 may also be a single layer or more, the number of layers may be adjusted according to specific effects, and when the multiple layers are arranged, the multiple layers may be arranged at equal intervals, or may be arranged at unequal intervals, and when the multiple layers are arranged at equal intervals, the intervals are 10-100 mm; or when the different intervals are set, the intervals are not more than 100 mm.

In another preferred embodiment, as shown in fig. 4, the cross-sections of the metal strip 1 and the sprayed metal strip 2 are non-parallel, and the included angle between the metal strip and the sprayed metal strip is 6 marked, and the included angle can be within 90 degrees from top to bottom. In the preferred embodiment of fig. 4, the angle between the sheet metal strip 1 and the section of the strip 2 to be sprayed is-15 °. The skilled person can set a corresponding specific angle according to the specific spraying conditions, and the present invention is only exemplary of a specific angle, and is not limited thereto.

As shown in fig. 4, the distance between the edges of the metal strip 1 and the sprayed plate strip 2 close to each other is marked 3, which may be specifically 10-200 mm, so as to ensure that the metal strip 1 is located near the side surface of the sprayed plate strip 2, and achieve the purposes of competing for drift powder and reducing the electric field intensity at the edges of the sprayed plate strip.

As shown in fig. 4, the upper edge of the uppermost layer of the two layers of metal plate strips 1 on the side close to the sprayed plate strip is as high as the sprayed plate strip, and those skilled in the art can also adjust the setting according to the specific effect that the upper edge of the uppermost layer of the metal plate strip 1 on the side close to the sprayed plate strip is higher or lower than the sprayed plate strip, and preferably, the height difference between the upper edge of the uppermost layer of the metal plate strip 1 on the side close to the sprayed plate strip and the sprayed surface of the sprayed plate strip is 0-100 mm.

Preferably, the thickness of one side of the metal plate strip 1 close to the sprayed plate strip 2 is 0.1-2 mm, and the thicker edge part can be sharpened. Therefore, one side of the metal plate strip 1 close to the sprayed plate strip 2 can be ensured to form a sharp enough edge tip, so as to achieve the purposes of competing for drift powder and reducing the electric field intensity of the edge of the sprayed plate strip.

Generally, according to the actual electrostatic spraying conditions, the length of the metal plate strip is slightly larger than the spraying range of the spraying plate strip and is 0.5-50 m.

In another preferred embodiment of the present invention, as shown in fig. 5, the two ends of the metal strip 1 in the extending direction are fixed by fixing structures 4. Optionally, as shown in fig. 6, the two ends of the elongated metal strip 1 in the extending direction may also adopt the vibration devices 5 as the joining mechanisms, so that the electrostatic powder accumulated on the metal strip 1 can be shaken off in time. It will be appreciated by those skilled in the art that when the strip of board to be painted is in a vertical position, no vibrating means need be provided.

The spraying plate belt horizontally entering the spraying room is in a natural suspension state due to the fact that the bottom of the spraying plate belt cannot be provided with the carrier roller, two ends of the spraying plate belt are outside the spraying room and can be supported by the carrier roller, two ends of the single-layer or multi-layer metal plate belt on two sides of the spraying plate belt are supported by the fixing device or the vibrating device, and the two ends of the single-layer or multi-layer metal plate belt are in the natural suspension state, so that the spraying plate belt can be well parallel, aligned and aligned with the edge of the spraying plate belt.

For the plate strip which runs horizontally or obliquely, because the continuous spraying time of the plate strip is longer, for the plate strip without meshes, a large amount of adhesive powder with electrostatic charges is accumulated on the plate strip, and because the accumulated layer is thicker, the charges on the plate strip are more difficult to be conveyed away by grounding the metal plate strip, so that the effect of the metal plate strip on reducing the electric field and the capability of the tip of the edge of the metal plate strip for adsorbing the newly sprayed powder can be reduced. The metal plate strip with the mesh hollows has more than 60% -95% of mesh hollows, so that much powder is not accumulated on the metal plate strip, and the metal plate strip can automatically fall off due to the fact that the mesh edges are narrow after adsorbing more powder. Compared with a metal plate strip without meshes, the electric field reducing effect is influenced a little; moreover, even if some powder is accumulated and adhered thereon. The two ends of the mesh thin belt are provided with vibrating devices, and floating powder accumulated on the mesh thin belt is vibrated and dropped through the vibration devices. When the multi-layer mesh thin belt is horizontally arranged, the meshes of the upper and lower mesh thin belts are aligned, so that the probability that the upper layer of the thin belt falls off and the lower layer of the thin belt falls off is reduced. In addition, the inner edge of the mesh is very sharp, and the mesh hollow plate strip is provided with a plurality of sharp edges compared with a metal plate strip without the mesh hollow, so that the capacity of competing for floating powder is stronger.

The utility model discloses still provide a powder electrostatic spraying device on above basis, including above the mesh takes electrostatic induction system. Set up in original electrostatic spraying application the utility model provides a thin static guider that takes of mesh can effectively reduce the volume of being powdered of sprayed coating area limit portion, solves the problem of electrostatic powder sprayed coating board limit portion bodiness.

Obviously, the above 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 is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.

Claims (14)

1. An electrostatic guiding device for electrostatic spraying of a continuous or discontinuous powder on a strip, comprising: the metal plate strip with the mesh hollows is arranged in the spraying range along the running direction of the plate strip to be sprayed; the metal plate is grounded and positioned on two sides of the sprayed plate belt in the running direction and used for adsorbing powder drifted out of the edge of the sprayed plate belt in powder electrostatic spraying.

2. The mesh thin strip electrostatic induction device according to claim 1, wherein the metal strip is arranged in a single layer or a plurality of layers at intervals.

3. The mesh thin strip electrostatic induction device of claim 2, wherein the metal strips are arranged in a plurality of layers at intervals, and the plurality of layers of metal strips are parallel to each other.

4. The mesh thin-belt electrostatic guiding device as claimed in claim 3, wherein the plurality of layers of metal plates are arranged at equal intervals, and the intervals are 10-100 mm;

or the multiple layers of metal plates and strips are arranged at unequal intervals, and the intervals are not more than 100 mm.

5. The electrostatic induction device for mesh thin belt according to claim 2, wherein when the metal plate belt is a single layer, the vertical distance between the upper edge of one side close to the sprayed plate belt and the sprayed surface of the sprayed plate belt is 0-100 mm;

when the metal plate strip is arranged in a multi-layer interval mode, the vertical distance between the upper edge of one side, close to the sprayed plate strip, of the outermost layer of the metal plate strip and the sprayed surface of the sprayed plate strip is 0-100 mm.

6. The mesh thin-strip electrostatic guiding device as claimed in claim 1, wherein the thickness of the metal strip near the side of the sprayed metal strip is in the range of 0.1-2 mm;

the length range of the metal plate strip is 0.5-50 m.

7. The electrostatic induction device for mesh thin strip as claimed in claim 1, wherein the distance between the edges of the metal strip and the sprayed metal strip close to each other is 10-100 mm.

8. The electrostatic induction device according to claim 1, wherein the electrostatic induction device comprises two sets of long metal strips on both sides of the running direction of the sprayed sheet.

9. The electrostatic induction device according to claim 2, wherein the surface of the outermost layer of the single-layer or multi-layer metal strip is at an angle of-90 ° to +90 ° with respect to the surface of the sprayed metal strip.

10. The mesh thin strip electrostatic induction device according to claim 2, wherein both ends of the metal strip are fixed by fixing structures.

11. The mesh thin strip electrostatic induction device according to claim 2, wherein vibration means are attached to both ends of the metal strip.

12. The mesh thin-belt electrostatic guiding device as claimed in claim 1, wherein the mesh opening area on the metal plate belt is 60% to 95% of the metal plate belt area.

13. The electrostatic induction device as claimed in claim 2 or 3, wherein the metal strips are arranged in parallel in a plurality of layers, and the plurality of layers have the same mesh shape and size and are aligned with each other.

14. An electrostatic powder spraying device comprising the mesh thin strip electrostatic induction device of any one of claims 1 to 13.

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