Manufacturing method of flexible electrostatic sheet with multiple electric fields and electrostatic filter

Abstract

The invention discloses a manufacturing method of a flexible electrostatic sheet with multiple electric fields and an electrostatic filter. The method comprises the following steps: step 1, providing a first flexible electric insulating part; step 2, fixing a conductive coating on the first flexible electric insulator (1), wherein the conductive coating forms an upper side conductive connection layer, a lower side conductive connection layer, a first electrode layer and a second electrode layer; the upper conductive connecting layer is communicated with all the first electrode layers, and the lower conductive connecting layer is communicated with all the second electrode layers; 3, providing a second flexible electric insulation part, and pasting the second flexible electric insulation part on the first flexible electric insulation part to enable the conductive coating to be clamped between the two flexible parts to form a flexible electrostatic sheet; a plurality of polar plates are formed on the flexible electrostatic sheet; and step 4, punching a separation seam between two adjacent polar plates on the flexible electrostatic sheet. The electrostatic filter is formed by folding the flexible electrostatic sheet manufactured by the method.

Description

Technical Field

[0001] The invention relates to a method for manufacturing a flexible electrostatic sheet with multiple electric fields and an electrostatic filter. Background Art

[0002] At present, common electrostatic filters generally form several parallel and independent electrostatic fields by arranging multiple substrates or folding flexible electrostatic sheets side by side, and use these electrostatic fields to adsorb particles in the air. In order to better adsorb particles in the air, the depth of the electrostatic field is often increased to increase the area. However, in order to maintain the strength of the electrostatic field, the number of charges on the plate will increase as the area increases while the voltage remains unchanged. This will easily lead to uneven charge distribution, resulting in excessive electrostatic field strength in local areas, causing local breakdown.

[0003] Therefore, how to overcome the above-mentioned defects has become an important issue to be solved urgently by those skilled in the art. Summary of the invention

[0004] The present invention overcomes the shortcomings of the above-mentioned technology and provides a method for manufacturing a flexible electrostatic sheet with multiple electric fields.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for manufacturing a flexible electrostatic sheet with multiple electric fields comprises the following steps:

[0007] Step 1: providing a first flexible electrical insulating member 1;

[0008] Step 2: fixing a conductive coating on the first flexible electrical insulating member 1, the conductive coating forming an upper conductive connecting layer 2 located on the upper side of the first flexible electrical insulating member 1, a lower conductive connecting layer 3 located on the lower side of the first flexible electrical insulating member 1, and a plurality of first electrode layers 4 and second electrode layers 5 spaced apart from each other.

[0009] The upper conductive connection layer 2 is connected to all first electrode layers 4 as a whole through a conductive coating, and the lower conductive connection layer 3 is connected to all second electrode layers 5 as a whole through a conductive coating;

[0010] Step 3: providing a second flexible electrical insulating member 6, and coating a layer of glue on the surface of the second flexible electrical insulating member 6, and pasting the second flexible electrical insulating member 6 onto the first flexible electrical insulating member 1 so that the first electrode layer 4, the second electrode layer 5, the upper conductive connecting layer 2 and the lower conductive connecting layer 3 are sandwiched between the two flexible members, thereby forming a flexible electrostatic sheet 8;

[0011] The flexible electrostatic sheet 8 is formed with a plurality of electrodes 81, each of which contains a plurality of first electrode layers 4 and second electrode layers 5 distributed at intervals. The number of electrode layers in each electrode 81 is the same and contains at least two electrode layers, and the electrode 81 regions do not overlap with each other.

[0012] Step 4: punching out a separation seam 7 between two adjacent electrode plates 81 on the flexible electrostatic sheet 8;

[0013] The separation seam 7 comprises a vertical section 71 extending up and down, and the upper and lower ends of the vertical section 71 are respectively provided with a horizontal section 72 extending left and right.

[0014] Preferably, the upper conductive connection layer 2 and the lower conductive connection layer 3 can be connected to external circuits respectively so as to make the first electrode layer 4 and the second electrode layer 5 have different polarities, and the upper and lower sides of the first flexible electrical insulating member 1 are respectively reserved with insulating edges 11 that extend beyond the upper conductive connection layer 2 and the lower conductive connection layer 3.

[0015] Preferably, the widths of the first electrode layer 4 and the second electrode layer 5 are both greater than the width of the horizontal section 72 extending to the left and right, the vertical section 71 is located in the center between the two electrode layers, and the flexible electrostatic sheet 8 is folded with the separation seam 7 as the dividing line, so that the left and right ends of the horizontal section 72 are folded edges.

[0016] Preferably, when fixing the conductive coating in step 2, the width, height and position of the first electrode layer 4, the second electrode layer 5, the upper conductive connecting layer 2 and the lower conductive connecting layer 3 can be adjusted independently.

[0017] Preferably, the manufacturing method further comprises step five: repeatedly folding the flexible electrostatic sheet 8 in a Z-shape with the separation seam 7 as a dividing line.

[0018] Preferably, the transverse section 72 is a straight line seam extending left and right, or the transverse section 72 is a V-shaped seam extending gradually from the vertical section 71 to both sides and outward at the same time.

[0019] An electrostatic filter with multiple electric fields is formed by folding a flexible electrostatic sheet manufactured by the method for manufacturing a flexible electrostatic sheet with multiple electric fields.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Compared with conventional independent plate filters and folding filters, each plate formed by folding the flexible electrostatic sheet in this case has at least two electrode layers, so that when the flexible electrostatic sheet is energized, multiple electric fields distributed front and back can be formed between the two plates, which can effectively increase the depth of the electric field used to adsorb particulate matter. At the same time, since the multiple electric fields are formed through different electrode layers, it can also avoid increasing the area of ​​the electrode layer while increasing the depth of the electric field, which leads to aggravation of uneven charge distribution, thereby reducing the occurrence of local breakdown. At the same time, the multiple electric fields distributed front and back can be superimposed on each other, thereby further improving the dust collection efficiency.

[0022] 2. The difference between the flexible electrostatic sheet and the conventional folding filter is that the conventional folding filter needs to punch out a hollow opening to form a channel for air to pass through, while the flexible electrostatic sheet in this case only punches out a separation slit. Compared with the traditional method of punching out a hollow opening, the scheme of punching out a separation slit in this case can greatly reduce the material loss of the flexible insulating member. Punching out a hollow opening is a kind of subtractive processing, which requires punching out a large area of ​​material from the flexible insulating member. At the same time, the area of ​​the hollow opening will also occupy a large amount of space for printing the electrode layer, thereby reducing the utilization rate of the flexible insulating member. In this case, the separation slit is opened to form an opening for air to pass through. The separation slit will not occupy a large area on the flexible insulating member, nor will it punch out waste material. This can greatly improve the utilization rate of the area of ​​the flexible insulating member, and more area can be used for printing the electrode layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the first flexible electrical insulating member after the conductive coating is fixed in this case.

[0024] Figure 2 This is one of the schematic diagrams of the electrostatic sheet after the separation seam is punched out in this case, in which the horizontal section is a straight seam.

[0025] Figure 3 This is a schematic diagram of the electrostatic sheet after folding.

[0026] Figure 4 This is one of the top-down schematic diagrams of the charge distribution when the electrostatic sheet in this case is working, in which each electrode plate includes two electrode layers and shows the electric field between two of the electrodes.

[0027] Figure 5 This is the second schematic diagram of the electrostatic sheet after the separation seam is punched out in this case, in which the horizontal section is a V-shaped seam.

[0028] Figure 6 This is the second top-view schematic diagram of the charge distribution when the electrostatic sheet in this case is working, in which each electrode plate contains three electrode layers and shows the electric field between two of the electrodes.

[0029] Figure 7This is the third top-view schematic diagram of the charge distribution when the electrostatic sheet in this case is working, in which each electrode plate includes four electrode layers and shows the electric field between two of the electrodes. DETAILED DESCRIPTION

[0030] The features of the present invention and other related features are further described in detail below through embodiments to facilitate understanding by those skilled in the art:

[0031] like Figures 1 to 7 As shown, a method for manufacturing a flexible electrostatic sheet with multiple electric fields comprises the following steps:

[0032] Step 1: Provide a first flexible electrical insulating member 1, which is generally a rectangular strip insulating member, generally a PET film or a PVC film, and the PET film or the PVC film is a roll material.

[0033] Step 2: Print the conductive coating on the first flexible electrical insulating member 1 by a printer, pull out the PET film or PVC film and lead it to the printer, the printer can print the conductive coating, the material of the conductive coating is generally conductive ink. The conductive coating is a pattern layer of the required shape after design, and the shape required for printing is input into the printer in advance. In other embodiments, the conductive coating can also be fixed on the first flexible electrical insulating member 1 by electroplating, pasting or silk screen printing.

[0034] After printing, the shape pattern layer forms an upper conductive connection layer 2 located on the upper side of the first flexible electrical insulating member 1, a lower conductive connection layer 3 located on the lower side of the first flexible electrical insulating member 1, and a plurality of first electrode layers 4 and second electrode layers 5 spaced apart from each other.

[0035] Because it is printed, all the first electrode layers 4 are electrically connected to the upper conductive connection layer 2 and connected as a whole, and all the second electrode layers 5 are electrically connected to the lower conductive connection layer 3 and connected as a whole. Because it is a whole, the electrical connection yield rate is very high, and there will be no problem of electrical connection failure.

[0036] Step 3: Provide a second flexible electrical insulating member 6 and apply a layer of glue on the surface of the second flexible electrical insulating member 6. Paste the second flexible electrical insulating member 6 onto the first flexible electrical insulating member 1 so that the first electrode layer 4, the second electrode layer 5, the upper conductive connection layer 2 and the lower conductive connection layer 3 are sandwiched between the two flexible members. Then press and dry to form a flexible electrostatic sheet 8, on which a plurality of pole plates 81 are formed, each of which contains a plurality of first electrode layers 4 and second electrode layers 5 spaced apart, and each of which contains the same number of electrode layers and at least two electrode layers, and the pole plates 81 do not overlap each other.

[0037] Step 4: punch out a separation slit 7 between two adjacent electrode plates 81 on the flexible electrostatic sheet 8; the separation slit 7 comprises a vertical section 71 extending up and down, and the vertical section 71 is also provided with horizontal sections 72 extending left and right at the upper and lower ends thereof.

[0038] The length of the vertical segment 71 is greater than the height of the electrode layer in the up-down direction, but both ends of the vertical segment 71 do not extend to the conductive connection layer on the corresponding side.

[0039] In this case, a plurality of first electrode layers 4, a plurality of second electrode layers 5, an upper conductive connection layer 2, and a lower conductive connection layer 3 are formed by printing a conductive coating on a first flexible electrical insulating member 1. Then, the conductive coating area is sandwiched between the first flexible electrical insulating member 1 and the second flexible electrical insulating member 6 by covering and pasting a second flexible electrical insulating member 6. The first electrode layers 4 are electrically connected together through the upper conductive connection layer 2, and the second electrode layers 5 are electrically connected together through the lower conductive connection layer 3. Flexible electrostatic sheets 8 of different lengths can be cut according to specific product needs, and then the flexible electrostatic sheets 8 are folded in a Z shape with the separation seam 7 as the folding edge, so that the flexible electrostatic sheets 8 are folded into a desired shape. In this way, by folding the flexible electrostatic sheets 8, the electrodes 81 can be made to face each other, and each electrode 81 has at least one first electrode layer 4 and a second electrode layer 5, and the first electrode layer 4 / second electrode layer 5 on each electrode 81 is opposite to the second electrode layer 5 / first electrode layer 4 on the adjacent electrode 81. In this way, by connecting the upper conductive connection layer 2 and the lower conductive connection layer 3 to different electrodes, an electric field for adsorbing particulate matter can be formed between the electrodes 81. At the same time, the separation seams 7 between adjacent electrodes 81 will open into openings 82 for air to pass between adjacent electrodes 81 after folding.

[0040] Compared with conventional independent plate filters and folded filters, each plate 81 formed by folding the flexible electrostatic sheet in this case has at least two electrode layers, so that when the flexible electrostatic sheet is energized, multiple electric fields distributed front and back can be formed between the two plates 81, which can effectively increase the depth of the electric field used to adsorb particulate matter. At the same time, since the multiple electric fields are formed by different electrode layers, it can also avoid increasing the area of ​​the electrode layer while increasing the depth of the electric field, which leads to aggravation of uneven charge distribution, thereby reducing the occurrence of local breakdown. At the same time, the multiple electric fields distributed front and back can be superimposed on each other, thereby further improving the dust collection efficiency.

[0041] In addition, the difference between the flexible electrostatic sheet in this case and the conventional folding filter is that the conventional folding filter needs to punch out a hollow opening to form a channel for air to pass through, while the flexible electrostatic sheet in this case only punches out a separation slit 7. Compared with the traditional method of punching out a hollow opening, the scheme of punching out the separation slit 7 in this case can greatly reduce the material loss of the flexible insulating member. Punching out a hollow opening is a kind of subtractive processing, which requires punching out a large area of ​​material from the flexible insulating member. At the same time, the area of ​​the hollow opening will also occupy a large amount of space for printing the electrode layer, thereby reducing the utilization rate of the flexible insulating member. In this case, the separation slit 7 is opened to form an opening for air to pass through. The separation slit 7 will not occupy a large area on the flexible insulating member, nor will it punch out waste material. This can greatly improve the utilization rate of the area of ​​the flexible insulating member, and more area can be used for printing the electrode layer.

[0042] like Figure 1 to Figure 2 As shown, the upper conductive connection layer 2 and the lower conductive connection layer 3 can be connected to external circuits respectively so that the first electrode layer 4 and the second electrode layer 5 have different polarities, and the upper and lower sides of the first flexible electrical insulating member 1 are respectively reserved with insulating edges 11 that exceed the upper conductive connection layer 2 and the lower conductive connection layer 3. Generally, the conductive connection layer sandwiched between the flexible members is partially exposed by punching holes in the corresponding areas of the electrode plates 81, and then the exposed conductive connection layer is contacted with an external wire to connect to an external circuit.

[0043] like Figures 1 to 4 As shown, the widths of the first electrode layer 4 and the second electrode layer 5 are both greater than the width of the horizontal section 72 extending to the left and right, the vertical section 71 is located in the center between the two electrode layers, and the flexible electrostatic sheet 8 is folded with the separation seam 7 as the dividing line, so that the left and right ends of the horizontal section 72 are folded edges. In this way, the width of the opening 82 can be changed by adjusting the width of the horizontal section 72, thereby changing the distance between the electrode plates 81 after folding.

[0044] Furthermore, when fixing the conductive coating, the width, height and position of the first electrode layer 4, the second electrode layer 5, the upper conductive connection layer 2 and the lower conductive connection layer 3 can be adjusted independently.

[0045] like Figure 3 to Figure 4 As shown, the manufacturing method of the flexible electrostatic sheet in this case also includes step five: repeatedly folding the flexible electrostatic sheet 8 in a Z shape with the separation seam 7 as a dividing line.

[0046] like Figure 2 and Figure 5 As shown, the transverse section 72 is a straight line seam extending left and right, or the transverse section 72 is a V-shaped seam extending gradually from the vertical section 71 to both sides and outward at the same time.

[0047] like Figure 3As shown, an electrostatic filter with multiple electric fields is formed by folding a flexible electrostatic sheet manufactured by the above-mentioned method for manufacturing a flexible electrostatic sheet with multiple electric fields.

[0048] As mentioned above, this case protects a method for manufacturing a flexible electrostatic sheet with multiple electric fields and an electrostatic filter. All technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.

Claims

1. A method for manufacturing a flexible electrostatic sheet with multiple electric fields, characterized in that The following steps are involved: Step 1: providing a first flexible electrical insulating member (1); Step 2: fixing a conductive coating on the first flexible electrical insulating member (1), the conductive coating forming an upper conductive connection layer (2) located on the upper side of the first flexible electrical insulating member (1), a lower conductive connection layer (3) located on the lower side of the first flexible electrical insulating member (1), and a plurality of first electrode layers (4) and second electrode layers (5) spaced apart from each other. The upper conductive connection layer (2) and all the first electrode layers (4) are connected as a whole via a conductive coating, and the lower conductive connection layer (3) and all the second electrode layers (5) are connected as a whole via a conductive coating; Step 3: providing a second flexible electrical insulating member (6), and coating the surface of the second flexible electrical insulating member (6) with a layer of glue, and adhering the second flexible electrical insulating member (6) to the first flexible electrical insulating member (1) so that the first electrode layer (4), the second electrode layer (5), the upper conductive connection layer (2) and the lower conductive connection layer (3) are sandwiched between the two flexible members, thereby forming a flexible electrostatic sheet (8); A plurality of electrode plates (81) are formed on the flexible electrostatic sheet (8), each electrode plate (81) region includes a plurality of first electrode layers (4) and second electrode layers (5) distributed at intervals, the number of electrode layers in each electrode plate (81) region is the same and includes at least two electrode layers, and the electrode plate (81) regions do not overlap with each other; Step 4: punching out a separation seam (7) between two adjacent electrode plates (81) on the flexible electrostatic sheet (8); The separation seam (7) comprises a vertical section (71) extending upward and downward, and the upper and lower ends of the vertical section (71) are respectively provided with a horizontal section (72) extending leftward and rightward.

2. A method for manufacturing a flexible electrostatic sheet with multiple electric fields according to claim 1, characterized in that The upper conductive connection layer (2) and the lower conductive connection layer (3) can be connected to external circuits respectively so as to make the first electrode layer (4) and the second electrode layer (5) have different polarities. The upper and lower sides of the first flexible electrical insulating member (1) are respectively reserved with insulating edges (11) that extend beyond the upper conductive connection layer (2) and the lower conductive connection layer (3).

3. The method for manufacturing a flexible electrostatic sheet with multiple electric fields according to claim 1, characterized in that The widths of the first electrode layer (4) and the second electrode layer (5) are both greater than the width of the horizontal section (72) extending to the left and right, the vertical section (71) is located in the middle between the two electrode layers, and the flexible electrostatic sheet (8) is folded with the separation seam (7) as a dividing line, so that the left and right ends of the horizontal section (72) are folded edges.

4. The method for manufacturing a flexible electrostatic sheet with multiple electric fields according to claim 1, characterized in that When the conductive coating is fixed in step 2, the width, height and position of the first electrode layer (4), the second electrode layer (5), the upper conductive connection layer (2) and the lower conductive connection layer (3) can be adjusted independently.

5. The method for manufacturing a flexible electrostatic sheet with multiple electric fields according to claim 1, characterized in that The method further comprises step five: repeatedly folding the flexible electrostatic sheet (8) in a Z-shape with the separation seam (7) as a dividing line.

6. The method for manufacturing a flexible electrostatic sheet with multiple electric fields according to claim 1, characterized in that The transverse section (72) is a straight line seam extending left and right, or the transverse section (72) is a V-shaped seam extending gradually from the vertical section (71) to both sides and outward at the same time.

7. An electrostatic filter with multiple electric fields, characterized in that The flexible electrostatic sheet manufactured by the method for manufacturing a flexible electrostatic sheet with multiple electric fields as described in any one of claims 1 to 6 is folded.

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