Paint mist separating and filtering device using DPA filtering material

Abstract

The utility model belongs to the technical field of paint mist filtering, and particularly relates to a paint mist separating and filtering device using a DPA filtering material, which comprises a paperboard outer casing, a tray, a back plate, an air deflector, an upper supporting plate and a lower supporting plate which form a filtering chamber, a first filtering unit, a second filtering unit and a third filtering unit are mounted in the filtering chamber and are all made of DPA filtering cotton materials; the first filter units are parallelly mounted on two sides of the filter chamber at equal intervals, the second filter units are mounted on the median line of the filter chamber at equal intervals, and the second filter units and the first filter units are staggered to form a labyrinth-shaped structure, so that the air retention time is prolonged, and the filter efficiency is improved; the third filtering unit is provided with first ribbons and second ribbons which are arranged in a staggered mode, air is stirred, and paint mist separation and sedimentation are promoted; a filter groove is formed in the back plate and filled with DPA filter cotton, residual paint mist particles in the air are further filtered, and it is guaranteed that the exhausted air is clean and free of pollution.

Description

Technical Field

[0001] The utility model belongs to the technical field of paint mist filtration, and particularly relates to a paint mist separation and filtration device using DPA filter material. Background Art

[0002] The development of dry spray booths has a history of one hundred years, and its earliest appearance can be traced back to 1910. Due to poor initial paint mist capture effect and high construction cost, dry spray booths were once replaced by technologies such as Venturi wet paint mist separation systems. However, with the improvement of international environmental awareness and the core requirements of energy conservation, emission reduction, cost reduction and efficiency improvement, the wet paint mist separation system no longer meets the future environmental protection requirements due to the generation of chemical hazardous waste emissions, which also brings new development opportunities for dry paint mist separation systems. Nowadays, the technology of dry spray systems has been improved by leaps and bounds. Combined with the circulating air technology, it has gradually become the market mainstream. The paint mist collection forms of dry spray systems are divided into carton type, lime adsorption type, electrostatic type, etc.

[0003] For example, electrostatic and carton dry paint mist separation systems. Among them, the electrostatic type has not been popularized due to cost and electrostatic safety hazards. Currently, the E-Cube dry paint mist separation system is mainly promoted. The E-Cube carton system separates the overspray mist in the air through the arrangement of special filter components inside the carton, and captures and collects the separated overspray mist through collection components such as the bottom tray and the fiberglass wool pipe network backplane. The E-Cube carton system does not generate hazardous waste liquid, its comprehensive energy consumption is significantly reduced compared with the traditional wet system, and it is convenient for maintenance and replacement. However, for some special operating environments and specific types of paints, the average paint mist capture efficiency of the E-Cube is low, and the utilization rate of the carton is low, resulting in waste of resources.

[0004] DPA filter cotton is a new type of filter cotton material that has emerged in recent years. It is made of 3D material and has a paint mist capture efficiency of up to 99%. It is particularly good at capturing overspray particles of 2.5 - 20 microns. Its dirt holding capacity can reach 27 kg / m 2 , and it is applicable to both dry and wet spray booths. It can capture overspray particles of various components of paints and has a wide range of applications. The DPA filter cotton has a diamond-shaped hole pocket design, which can effectively expand the filtration surface area and prevent blockage. With the implementation of energy conservation and emission reduction policies and the increasing demand for capturing overspray mist in spray booths, the application of DPA filter cotton has received wide attention. Filters made of DPA cotton can be non-standard customized according to different usage environments, and their paint mist capture efficiency is much higher than that of other filter materials.

[0005] Existing paint mist separation equipment generally has problems such as low filtration efficiency, large equipment volume, and high maintenance cost, and it is difficult to meet the requirements of high efficiency, economy, and environmental protection.

[0006] Traditional filter media have limited ability to capture fine paint mist particles, resulting in low paint mist capture efficiency. To increase the filtration area and improve efficiency, traditional devices are designed as large structures, occupying a large amount of space and being not conducive to applications in small spraying workplaces. The filter media are prone to clogging, requiring frequent replacement and maintenance, which increases the operating cost and labor intensity. Summary of the Invention

[0007] Aiming at the problems existing in the prior art, the purpose of the present utility model is to provide a paint mist separation and filtration device using DPA filter material, which can achieve improving the paint mist separation efficiency, reducing the equipment volume, and lowering the maintenance cost by optimizing the layout of the filtration unit and introducing the ribbon stirring technology.

[0008] To achieve the above purpose, the present utility model provides the following technical solutions:

[0009] A paint mist separation and filtration device using DPA filter material, including a cardboard outer housing, a tray is arranged at the bottom of the cardboard outer housing, the shape of the cardboard outer housing is set as a "C" shape, and a back plate is arranged at the open end of the side of the cardboard outer housing. A wind guiding plate is arranged inside the top of the cardboard outer housing. An upper support plate and a lower support plate are installed inside the cardboard outer housing. The space formed by the cardboard outer housing, the upper support plate and the lower support plate is set as a filtration chamber.

[0010] A first filtration unit, a second filtration unit and a third filtration unit are installed in the filtration chamber.

[0011] Further, the first filtration units are installed in parallel at equal intervals on both sides inside the filtration chamber. The second filtration units are installed at equal intervals on the median line of the filtration chamber, and the first filtration units and the second filtration units are arranged in an interleaved manner.

[0012] Further, the distance between the relatively arranged first filtration units is set as A, the length of the second filtration unit is set as B, and B is greater than A.

[0013] Further, the second filtration unit is located on the bisector of the adjacent first filtration units.

[0014] Further, the materials of the first filtration unit, the second filtration unit and the third filtration unit are all DPA filter cotton.

[0015] Further, a first ribbon and a second ribbon are arranged at equal intervals on the third filtration unit, and the first ribbon and the second ribbon are arranged in an interleaved manner.

[0016] Further, a filtration slot is penetrated and opened on the side of the back plate, and DPA filter cotton is arranged in the filtration slot.

[0017] Furthermore, wooden cushion blocks are symmetrically arranged at the bottom of the lower support plate.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] Firstly, the design of the cardboard outer cover is in a "C" shape, and a tray is provided at the bottom to collect the settled paint mist particles, effectively preventing secondary pollution. Filter slots are opened on the side of the back plate, and DPA filter cotton is filled, so that the air passing through the back plate is further filtered to ensure that the discharged air is clean and pollution-free. The air guide plate guides the overspray paint mist mixed air into the filter chamber, making the air flow path reasonable and enhancing the filtering effect. The installation of the upper support plate and the lower support plate not only supports the filter unit, but also forms a filter chamber, providing sufficient space for the filtering process.

[0020] Secondly, the first filter unit, the second filter unit and the third filter unit installed in the filter chamber achieve efficient paint mist capture through reasonable arrangement and layout. The first filter unit is installed in parallel at equal intervals on both inner sides of the filter chamber, increasing the residence time of the overspray paint mist mixed air in the filter chamber and enhancing the sedimentation and adsorption of paint mist particles. The second filter unit is installed at equal intervals on the center line of the filter chamber, and is arranged in a staggered manner with the first filter unit to form a maze-like structure, further increasing the air flow path and improving the filtering efficiency.

[0021] By arranging on the bisector line between the second filter unit and the adjacent first filter unit, it ensures that the air path is uniform when passing through these two filter units, effectively improving the filtering effect. Both the first filter unit and the second filter unit use DPA filter cotton material, which has a paint mist capture efficiency as high as 99%, and is particularly suitable for capturing overspray particles of 2.5 - 20 microns. The high dirt holding capacity of the DPA filter cotton ensures the filtering performance after long-term use and reduces the need for frequent replacement and maintenance.

[0022] Thirdly, the third filter unit is equidistantly provided with a first ribbon and a second ribbon. Through the movement of the ribbons when the air flows, it plays a role in stirring the air, promoting the separation and sedimentation of the air and the overspray paint mist. Such a design not only increases the filtering efficiency, but also reduces the volume of the equipment, and is suitable for spraying operation environments of various scales. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural schematic diagram of the present utility model;

[0024] Figure 2 is an internal structural schematic diagram of the present utility model;

[0025] Figure 3 is a structural schematic diagram of the present utility model after removing the air guide plate;

[0026] Figure 4This is a schematic diagram of the structure of the utility model without the cardboard outer cover;

[0027] Figure 5 This is a schematic structural diagram of the third filter unit of the utility model;

[0028] Figure 6 It is a structural schematic diagram of the back plate of the utility model.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Cardboard outer shell;

[0031] 2. Pallet;

[0032] 3. Back plate; 31. Filter tank;

[0033] 4. Upper support plate; 5. Lower support plate; 6. Wooden pads;

[0034] 7. Wind deflector;

[0035] 8. First filter unit; 9. Second filter unit; 10. Third filter unit; 101. First streamer; 102. Second streamer; 11. Filter chamber. DETAILED DESCRIPTION

[0036] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0037] See also Figure 1-6 A paint mist separation and filtering device using a DPA filter material comprises a cardboard outer cover shell 1; a tray 2 is arranged at the bottom of the cardboard outer cover shell 1 for collecting settled paint mist particles; the shape of the cardboard outer cover shell 1 is set to be a "匚" shape, and a back plate 3 is arranged at the side opening end of the cardboard outer cover shell 1, and a filter groove 31 is penetrated through the side of the back plate 3, and a DPA filter cotton is arranged in the filter groove 31 for further filtering residual paint mist particles in the air; an air guide plate 7 is arranged on the inner side of the top of the cardboard outer cover shell 1, and the air guide plate 7 is used to guide the overspray paint mist mixed air into the filter chamber 11; an upper support plate 4 and a lower support plate 5 are installed inside the cardboard outer cover shell 1, and the upper support plate 4 and the lower support plate 5 are used to support the filter unit and form the filter chamber 11; the space formed by the cardboard outer cover shell 1, the upper support plate 4 and the lower support plate 5 is set as the filter chamber 11; a first filter unit 8, a second filter unit 9 and a third filter unit 10 are installed in the filter chamber 11.

[0038] See also Figure 3, the first filtering unit 8 is installed equidistantly and parallelly on both inner sides of the filtering chamber 11. The arrangement of the first filtering unit 8 helps to extend the residence time of the overspray mist mixed air in the filtering chamber 11, enhancing the sedimentation and adsorption of paint mist particles; the second filtering unit 9 is installed at equal intervals on the median line of the filtering chamber 11, and the second filtering unit 9 further improves the filtering efficiency through a labyrinth layout; and the first filtering unit 8 and the second filtering unit 9 are arranged in an interleaved manner, and the interleaved arrangement forms a labyrinth structure, further increasing the air flow path and enhancing the filtering effect.

[0039] Refer to Figure 3 , the distance between the relatively arranged first filtering units 8 is set as A, the length of the second filtering unit 9 is set as B, and B is greater than A; this design ensures that the air can fully contact the filtering material when passing through the second filtering unit 9, improving the paint mist capture efficiency.

[0040] Refer to Figure 3-4 , the second filtering unit 9 is located on the bisector of the adjacent first filtering units 8; this arrangement ensures that the air path is uniform when passing through the first filtering unit 8 and the second filtering unit 9, effectively improving the filtering effect.

[0041] Refer to Figure 2-4 , the materials of the first filtering unit 8, the second filtering unit 9 and the third filtering unit 10 are all DPA filter cotton; the DPA filter cotton has a paint mist capture efficiency of up to 99%, and is particularly suitable for capturing overspray particles of 2.5 - 20 microns; the high dirt capacity of the DPA filter cotton enables it to maintain good filtering performance after long-term use.

[0042] Refer to Figure 5 , the first ribbon 101 and the second ribbon 102 are arranged at equal intervals on the third filtering unit 10, and the first ribbon 101 and the second ribbon 102 are arranged in an interleaved manner; the first ribbon 101 and the second ribbon 102 move when the air flows, playing a role in stirring the air and promoting the separation and sedimentation of the air and the overspray mist.

[0043] Refer to Figure 3 , a filtering groove 31 is formed through the side surface of the back plate 3, and DPA filter cotton is arranged in the filtering groove 31; this design enables the air to be further filtered when passing through the back plate 3, ensuring that the discharged air is clean and pollution-free.

[0044] Refer to Figure 2 , wooden cushion blocks 6 are symmetrically arranged at the bottom of the lower support plate 5; the wooden cushion blocks 6 are used to support the entire filtering device and prevent the lower support plate 5 from directly contacting the ground, avoiding moisture erosion.

[0045] The working principle of the present utility model is:

[0046] The overspray mist mixed air after spraying operation enters the interior of the cardboard outer housing 1 from above, and enters the filtration chamber 11 through the square groove inlet of the upper support plate 4 under the guidance of the air guiding plate 7;

[0047] And it first contacts the third filtration unit 10. After being adsorbed by the DPA filter cotton on the surface of the third filtration unit 10 and stirred turbulently by the first ribbon 101 and the second ribbon 102, it then enters the chamber main body formed by the maze arrangement of the first filtration unit 8 and the second filtration unit 9. After the overspray mist mixed air is processed by staying, adsorption, turbulence, etc. inside the filtration chamber 11, the overspray mist in the air is separated from the air, either adsorbed by the DPA filter cotton on the surface of the filtration unit, or settled to the bottom and collected by the tray 2. After that, the separated air further filters the residual overspray mist through the back plate 3, and then the air reaches the air outlet through the back plate;

[0048] The first filtration unit 8 and the second filtration unit 9 arranged in a specific layout inside the filtration chamber 11 are overall in a maze shape, which can extend the residence time of the air containing overspray mist inside the filtration chamber 11, increase the sedimentation and adsorption capture of the overspray mist, and solve the problem that the paint mist capture amount per unit volume of the existing equipment is not high;

[0049] The first ribbon 101 and the second ribbon 102 are arranged on the surface of the DPA of the third filtration unit 10. When there is air flow in the filtration chamber 11, the first ribbon 101 and the second ribbon 102 move, playing a role in stirring the air and promoting the separation and sedimentation of the air and the overspray mist.

[0050] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A paint mist separation and filtration device using DPA filter material, comprising a cardboard outer casing (1), characterized in that: A tray (2) is provided at the bottom of the cardboard outer casing (1). The shape of the cardboard outer casing (1) is set as a "C" shape, and a back plate (3) is provided at the open end of the side surface of the cardboard outer casing (1). A wind guide plate (7) is provided inside the top of the cardboard outer casing (1). An upper support plate (4) and a lower support plate (5) are installed inside the cardboard outer casing (1). The space formed by the cardboard outer casing (1), the upper support plate (4) and the lower support plate (5) is set as a filtering chamber (11). A first filtering unit (8), a second filtering unit (9) and a third filtering unit (10) are installed in the filtering chamber (11).

2. A paint mist separation and filtration device using DPA filter material according to claim 1, characterized in that: The first filtering units (8) are installed in parallel at equal intervals on both sides inside the filtering chamber (11). The second filtering units (9) are installed at equal intervals on the median line of the filtering chamber (11), and the first filtering units (8) and the second filtering units (9) are arranged in an interleaved manner with each other.

3. A paint mist separation and filtration device using DPA filter material according to claim 2, characterized in that: The distance between the oppositely arranged first filtering units (8) is set as A, the length of the second filtering unit (9) is set as B, and B is greater than A.

4. A paint mist separation and filtration device using DPA filter material according to claim 3, characterized in that: The second filtering unit (9) is located on the bisector of the adjacent first filtering units (8).

5. The paint mist separation and filtration device using DPA filter material according to claim 1, characterized in that: The materials of the first filtering unit (8), the second filtering unit (9) and the third filtering unit (10) are all DPA filter cotton.

6. The paint mist separation and filtration device using DPA filter material according to claim 1, characterized in that: First streamers (101) and second streamers (102) are arranged at equal intervals on the third filtering unit (10), and the first streamers (101) and the second streamers (102) are arranged in an interleaved manner with each other.

7. The paint mist separation and filtration device using DPA filter material according to claim 1, characterized in that: Filtering grooves (31) are formed through the side surface of the back plate (3), and DPA filter cotton is provided in the filtering grooves (31).

8. The paint mist separation and filtration device using DPA filter material according to claim 1, characterized in that: Wood pads (6) are symmetrically provided at the bottom of the lower support plate (5).

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