Powder deposition preventing panel, painting booth

Abstract

The present application relates to a kind of board that can prevent powder accumulation, including microplate, the microhole in microplate is communicated the upper and lower surfaces of microplate;Sealing plate is arranged on the upper surface of microplate;Multiple ventilation grooves are arranged between the sealing plate and microplate, each ventilation groove is communicated, air inlet hole is opened on the sealing plate, one end is connected with one of ventilation grooves, the other end of the air inlet hole is connected with high-pressure gas pipe;High-pressure gas is input from high-pressure gas pipe to each ventilation groove, and high-pressure gas is emitted from the lower surface of microplate by passing through microplate.A kind of coating spray room, including powder spraying cavity;Top plate is arranged on the upper end of powder spraying cavity, and the top plate uses the above-mentioned board that can prevent powder accumulation.Make the entire lower surface of top plate into positive pressure, avoid the powder accumulation on the lower surface of top plate.

Description

TECHNICAL FIELD

[0001] The present application relates to a continuous strip closed powder coating device, in particular to a plate material and a coating spray room capable of preventing powder accumulation. BACKGROUND

[0002] The continuous strip closed powder coating device is a new powder application device proposed by the applicant. In 2018, the applicant filed a patent application CN109550609A high-speed coiled material powder spraying device and its working method and powder spraying production line. In the patent application, the powder in the powder spraying cavity moves in the same direction as the plate strip on one side, so that the powder coating is electrostatically adsorbed on the surface of the plate strip.

[0003] At present, in order to adapt to the horizontal movement of the plate material, the powder spraying cavity needs to be arranged horizontally. After the spraying room is arranged in a horizontal structure, the powder is deposited on the top plate, i.e. the top of the powder spraying cavity. The accumulated powder eventually falls off. The powder blocks that fall on the sprayed plate strip will appear powder blocks and impurity points, which seriously affect the product quality. Therefore, in view of these problems of the spraying room, the spraying room needs to be redeveloped. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a plate material and a coating spraying room capable of preventing powder accumulation, which solves the problem of easy powder accumulation on the top plate in the spraying room.

[0005] The technical solution adopted by the present application to solve the technical problem is:

[0006] First aspect:

[0007] A plate material capable of preventing powder accumulation is provided, comprising

[0008] A microporous plate, the micropores in the microporous plate are communicated with the upper and lower surfaces of the microporous plate;

[0009] A sealing plate is arranged on the upper surface of the microporous plate;

[0010] A plurality of ventilation grooves are arranged between the sealing plate and the microporous plate, each ventilation groove is communicated with each other, an air inlet hole is formed on the sealing plate, one end of the air inlet hole is connected with one of the ventilation grooves, and the other end of the air inlet hole is connected with a high-pressure gas pipe;

[0011] High-pressure gas is input from the high-pressure gas pipe to each ventilation groove, and the high-pressure gas passes through the microporous plate and emerges from the lower surface of the microporous plate.

[0012] Further, the ventilation grooves are formed on the lower surface of the sealing plate.

[0013] The upper surface of the microporous plate is a plane.

[0014] Further, the ventilation grooves are formed on the upper surface of the microporous plate.

[0015] The lower surface of the sealing plate is a plane.

[0016] Further, the lower surface of the sealing plate is provided with an upper half groove, and the upper surface of the micro-hole plate is provided with a lower half groove.

[0017] The upper half groove and the lower half groove form a ventilation groove.

[0018] Further, the sealing plate is provided with a fixing block, and the high-pressure air pipe passes through the fixing block and is fixedly connected with the fixing block.

[0019] Further, a needle-penetrating hole is formed on the micro-hole plate and the sealing plate, an electric needle pipe is arranged in the needle-penetrating hole, and a high-pressure electric needle is arranged in the electric needle pipe.

[0020] Second aspect:

[0021] A coating spraying room is provided, comprising

[0022] A powder spraying cavity is provided with a top plate at its upper end and side plates at its front and rear sides.

[0023] The top plate adopts the above-mentioned powder-accumulation-preventing plate material.

[0024] The present application has the following beneficial effects:

[0025] The plate material is supported by the micro-hole plate and the sealing plate, the gas input from the high-pressure air pipe can be delivered to each position of the micro-hole plate through the ventilation groove, and is uniformly sprayed from the lower surface of the micro-hole plate, so that the entire lower surface of the plate material is under positive pressure, and powder accumulation on the lower surface of the plate material is avoided.

[0026] The top plate or the side plate of the coating spraying room adopts the above-mentioned plate material, and the positive pressure on the inner surface of the plate material completely eliminates the powder accumulation on the inner wall of the spraying room. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described below with reference to the accompanying drawings.

[0028] Figure 1 is a schematic view of the first plate material in Example 1;

[0029] Figure 2 is a schematic view of the second plate material in Example 1;

[0030] Figure 3 is a schematic view of the third plate material in Example 1;

[0031] Figure 4 is a schematic view of the spraying room;

[0032] wherein,

[0033] 2, plate material, 21, micro-hole plate, 22, sealing plate;

[0034] 31. Ventilation groove; 32. High-pressure air pipe; 33. Fixing block;

[0035] 41. Needle hole; 42. High-voltage electric needle;

[0036] 5. Powder spraying chamber; 51. Exhaust system; 52. Top plate;

[0037] 6. Material belt. Detailed Implementation

[0038] The invention will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0039] Example 1

[0040] like Figures 1 to 3 As shown, a type of board material that can prevent dust accumulation includes...

[0041] Microporous plate 21, wherein the micropores in the microporous plate 21 connect the upper and lower surfaces of the microporous plate 21;

[0042] Sealing plate 22 is disposed on the upper surface of microporous plate 21;

[0043] Multiple ventilation grooves 31 are provided between the sealing plate 22 and the microporous plate 21, and the ventilation grooves 31 are connected to each other. An air inlet is provided on the sealing plate 22, one end of which is connected to one of the ventilation grooves 31, and the other end of which is connected to a high-pressure air pipe 32.

[0044] High-pressure gas is input from the high-pressure gas pipe 32 into each ventilation groove 31. The high-pressure gas passes through the microporous plate 21 and emerges from the lower surface of the microporous plate 21.

[0045] The sealing plate 22 and the microporous plate 21 are fixedly connected by adhesive bonding.

[0046] Each ventilation groove 31 can be distributed in a matrix structure.

[0047] The microporous plate 21 is an existing material, made of microporous plastic material with a pore size of 10-50 micrometers. The micropores must be open to provide good air permeability. The microporous plate 21 can be made of polyurethane, polyester, polyether, or other plastics. The thickness of the microporous plate 21 is 1-3 cm, preferably 1.5 cm.

[0048] Specifically, as a first embodiment of the connection structure between the venting groove 31 and the sealing plate 22 and the microporous plate 21, such as... Figure 1 As shown, the ventilation groove 31 is formed on the lower surface of the sealing plate 22; the upper surface of the microporous plate 21 is a plane.

[0049] In this embodiment, the high-pressure gas flow first passes through each air passage groove 31 under the sealing plate 22 to disperse the gas flow, so that the gas flow can quickly cover the entire upper surface of the microporous plate 21, and then slowly emerges downward through the internal micropores.

[0050] Specifically, as a second embodiment of the connection structure of the air passage groove 31 between the sealing plate 22 and the microporous plate 21, as shown in Figure 2 The air passage groove 31 is formed on the upper surface of the microporous plate 21; and the lower surface of the sealing plate 22 is a plane.

[0051] In this embodiment, the high-pressure gas flow first passes through each air passage groove 31 above the microporous plate 21 to disperse the gas flow, so that the gas flow can quickly cover the entire upper surface of the microporous plate 21, and then slowly emerges downward through the internal micropores.

[0052] Specifically, as a third embodiment of the connection structure of the air passage groove 31 between the sealing plate 22 and the microporous plate 21, as shown in Figure 3 The lower surface of the sealing plate 22 is provided with an upper half groove, and the upper surface of the microporous plate 21 is provided with a lower half groove; the upper half groove and the lower half groove form the air passage groove 31.

[0053] To further improve the connection strength between the high-pressure gas pipe 32 and the sealing plate 22 and improve the stability of the structure therebetween, a fixing block 33 is arranged on the sealing plate 22, the high-pressure gas pipe 32 passes through the fixing block 33, and the high-pressure gas pipe 32 is fixedly connected with the fixing block 33. The high-pressure gas pipe 32 and the fixing block 33 are fixedly connected by using glue.

[0054] As shown in Figures 1-3 As an optional embodiment in this embodiment, a needle hole 41 is formed on the microporous plate 21 and the sealing plate 22, an electric needle pipe is arranged in the needle hole 41, and a high-voltage electric needle 42 is arranged in the electric needle pipe. For some spraying rooms, a high-voltage electric needle 42 needs to be installed on the top of the spraying room to form high-voltage static electricity in the powder spraying cavity 5 by the high-voltage electric needle 42.

[0055] The electric needle pipe is a plastic pipe, which can be various insulating plastic pipes, preferably a polytetrafluoroethylene pipe, and can have an inner diameter of about one millimeter and an outer diameter of 2-3 millimeters. In addition, the plastic pipe can be connected to a pressure gas to blow out the powder accumulated on the electric needle head.

[0056] The principle of preventing powder accumulation by the plate 2 is as follows:

[0057] The gas input from the high-pressure gas pipe 32 can be delivered to each position of the microporous plate 21 through the air passage groove 31 and uniformly sprayed from the lower surface of the microporous plate 21, so that the entire lower surface of the plate 2 becomes a positive pressure, thereby completely eliminating the occurrence of powder accumulation.

[0058] Embodiment two

[0059] As shown in Figure 4 a painting spray room, comprising

[0060] a powder spraying cavity 5, a top plate 52 is arranged at the upper end of the powder spraying cavity 5, and side plates are arranged at the front and back sides of the powder spraying cavity 5 respectively;

[0061] The top plate 52 adopts the plate material 2 capable of preventing powder accumulation according to embodiment one.

[0062] The powder spraying cavity 5 is composed of the top plate 52 and two side plates, the powder spraying cavity 5 is connected with an air extraction mechanism 51 at the right side, the air extraction mechanism 51 can ensure that a negative pressure is formed in the powder spraying cavity 5, powder is introduced into the left side inlet of the powder spraying cavity 5, and then moves to the right side at a set speed, the material belt 6 moves below the powder spraying cavity 5, the moving speed of the material belt 6 is equal to the moving speed of the powder, and since the powder has high voltage static electricity, the powder is adsorbed onto the material belt 6.

[0063] The spray room of the embodiment can completely prevent the powder accumulation phenomenon from occurring since the plate material 2 is used as the top plate 52.

[0064] The plate material 2 of embodiment one can also be used as the side plate in addition to being used as the top plate 52 of the spray room, and the problem of powder accumulation on the inner side walls of the front and back of the spray room can also be solved.

[0065] Based on the above ideal embodiments according to the present application, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. A type of board material that prevents dust accumulation, characterized in that, include A microporous plate, wherein the micropores in the microporous plate connect the upper and lower surfaces of the microporous plate; A sealing plate is installed on the upper surface of the microporous plate; Multiple ventilation grooves are provided between the sealing plate and the microporous plate, and the ventilation grooves are connected to each other. An air inlet is provided on the sealing plate, one end of which is connected to one of the ventilation grooves, and the other end of the air inlet is connected to a high-pressure air pipe. High-pressure gas is introduced from the high-pressure gas pipe into each ventilation groove. The high-pressure gas passes through the microporous plate and emerges from the lower surface of the microporous plate. The sealing plate is provided with a fixing block, and the high-pressure air pipe passes through the fixing block and is fixedly connected to the fixing block; The microporous plate and the sealing plate have needle holes, and an electric needle tube is installed in the needle hole, with a high-voltage electric needle installed in the electric needle tube.

2. The board material for preventing powder accumulation according to claim 1, characterized in that, The ventilation groove is formed on the lower surface of the sealing plate; The upper surface of the microporous plate is planar.

3. The board material for preventing powder accumulation according to claim 1, characterized in that, The ventilation grooves are formed on the upper surface of the microporous plate; The lower surface of the sealing plate is flat.

4. The board material for preventing dust accumulation according to claim 1, characterized in that, The lower surface of the sealing plate has an upper half groove, and the upper surface of the microporous plate has a lower half groove. The upper and lower sections form a ventilation channel.

5. A painting spray booth, characterized in that, include Powder spraying chamber; a top plate is provided at its upper end, and side plates are provided on its front and rear sides respectively; The top plate is made of a material that can prevent dust accumulation as described in any one of claims 1-4.

6. The painting spray booth according to claim 5, characterized in that, The side panel is made of a material that can prevent powder accumulation as described in any one of claims 1-4.

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