A paint mist separating and adsorbing filter device

Abstract

The application relates to a paint mist separation adsorption filter device and belongs to the filter device field. The device comprises a shell, a first filter layer, a second filter layer, a third filter layer and a fourth filter layer arranged in sequence along the airflow direction, an air inlet and an air outlet are respectively arranged on opposite sides of the shell, the first filter layer comprises a first filter plate arranged in the shell and close to the air inlet side, the second filter layer comprises a plurality of layers of second filter balls closely laid, the third filter layer comprises a plurality of layers of third filter balls closely laid, the third filter ball is smaller than the second filter ball, the fourth filter layer comprises a fourth filter plate arranged in the shell and located on the side of the third filter layer away from the air inlet, and the fourth filter plate covers the air outlet. The filter device has a tortuous internal flow channel and a large specific surface area, the airflow flows more smoothly, the adsorption filtering effect of the filter device is better than that of a traditional planar filter layer, and the paint mist filtering efficiency can reach more than 95%.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of filtering devices, in particular to a paint mist separation and adsorption filtering device. BACKGROUND

[0002] Most of the current paint spraying processes use high-pressure atomized paint to perform coating. Since the current precision is difficult to control when the paint is sprayed to the object, part of the paint particles will form free paint mist with the airflow. If the paint mist is not purified during the operation process, it will not only pollute the environment, but also cause chronic or acute poisoning to the workers in the workshop.

[0003] The paint mist treatment methods generally include physical adsorption, chemical absorption, centrifugal separation, condensation, etc. The device of the physical adsorption method is generally a filtering device filled with adsorption materials. Such adsorption filtering devices are the most commonly used air purification means in small and medium-sized paint spraying workshops because of their low cost, low processing cost, and small floor area. However, the adsorption efficiency of the existing adsorption filtering devices is not ideal because the adsorption materials are laid in a planar manner, and further improvement is still needed. SUMMARY

[0004] In order to improve the adsorption efficiency of the paint mist, the present application provides a paint mist separation and adsorption filtering device.

[0005] The paint mist separation and adsorption filtering device provided by the present application adopts the following technical scheme:

[0006] A paint mist separation and adsorption filtering device comprises:

[0007] A housing, air inlets and air outlets are respectively arranged on opposite sides of the housing;

[0008] A first filtering layer comprising a first filtering plate arranged in the housing and close to the air inlet;

[0009] A second filtering layer comprising a plurality of second filtering balls, the second filtering balls are fixed in the housing and located away from the air inlet side of the first filtering layer, and the second filtering balls are closely laid in several layers in the housing;

[0010] A third filtering layer comprising a plurality of third filtering balls, the third filtering balls are fixed in the housing and located away from the air inlet side of the second filtering layer, and the third filtering balls are closely laid in several layers in the housing, and the size of the third filtering balls is smaller than that of the second filtering balls;

[0011] A fourth filtering layer comprising a fourth filtering plate arranged in the housing and located away from the air inlet side of the third filtering layer, and the fourth filtering plate covers the air outlet.

[0012] By adopting the above technical scheme, after the paint mist is preliminarily filtered by the first filter layer, the large-particle paint mist in the airflow is adsorbed and removed, when the paint mist passes through the second filter layer, because the second filter ball has a higher specific surface area than the ordinary filter layer material, the paint mist continuously changes direction and accelerates in the developed specific surface area flow channel inside the second filter ball to generate a baffle and collision, thereby achieving a better trapping and filtering effect; when the paint mist passes through the third filter layer, because the size of the third filter ball is smaller than that of the second filter ball, the airflow containing the paint mist can be further uniformly dispersed, which helps the paint mist to be further separated and filtered in the third filter ball; after passing through the densely laid third filter layer, a more stable and uniform airflow is formed, the airflow slows down and flows to the fourth filter layer, and the paint mist particles leaked from the third filter layer can be accurately intercepted and filtered on the fourth filter plate, thereby making the filtering efficiency of the entire filtering device better.

[0013] Preferably, the second filter balls in adjacent layers along the airflow direction are arranged in alignment, the ball center connecting lines of the second filter balls in adjacent layers and in contact are parallel to the airflow direction, the third filter balls in adjacent layers along the airflow direction are arranged in alignment, and the ball center connecting lines of the third filter balls in adjacent layers and in contact are parallel to the airflow direction.

[0014] By adopting the above technical scheme, the second filter layer and the third filter layer form many air channels along the airflow direction, which helps the airflow to maintain high-speed flow. In addition, the aligned second filter balls and the aligned third filter balls have many through pores in the overlapping part along the airflow direction. Because the size of the third filter ball is larger than that of the second filter ball, the through pores at the interface between the second filter layer and the third filter layer form a funnel-shaped air channel, so that the paint mist produces a Venturi effect when entering the third filter layer to accelerate the flow, and the airflow maintains high-speed flow and collides with the third filter ball. This not only effectively improves the adsorption efficiency of the paint mist, but also helps the airflow to flow smoothly in the filtering device, reduces the load of the exhaust device, and reduces the power cost of operation.

[0015] Preferably, the first filter plate is provided with a plurality of blocks, the plurality of first filter plates are arranged transversely and inclinedly arranged in the housing, the inclination direction of the first filter plate is not parallel to the airflow direction, the inclination direction of adjacent first filter plates is opposite, every two first filter plates form a group, the included angle between the first filter plates in the same group is open to the air inlet, and a gap is left between two adjacent first filter plates of adjacent groups.

[0016] By adopting the technical scheme, the first filter plate arranged obliquely can increase the contact area between the paint mist and the first filter plate, so that the large-particle paint mist can be better adsorbed and filtered at the first filter layer; on the other hand, when the airflow passes through the gap between the first filter plates of the adjacent groups, the airflow containing the paint mist can be adsorbed at the gap, so that the paint mist can be accelerated to enter the second filter layer and collide with the second filter balls at high speed, thereby having a higher adsorption and filtering efficiency.

[0017] In addition, since the second filter balls and the third filter balls are arranged in alignment to form a through air passage, the gap in the first filter layer can further strengthen the acceleration effect on the paint mist, so that the airflow entering from the air inlet can be continuously pushed forward by the subsequent airflow, greatly improving the paint mist deflection and collision degree in the second filter layer and the third filter layer, thereby enabling the paint mist to be better captured and adsorbed by the filtering material.

[0018] Preferably, the diameter of the second filter ball is greater than the gap between the two adjacent end portions of the first filter plates of the adjacent groups close to the air inlet, and is less than the gap between the two adjacent end portions of the first filter plates of the adjacent groups close to the air outlet.

[0019] By adopting the technical scheme, when the paint mist flows from the gap between the first filter plates to the second filter ball, the paint mist can be subjected to less airflow resistance, so that the paint mist can maintain a high flow rate and be fully dispersed, intercepted and adsorbed when colliding with the surface of the second filter ball.

[0020] Preferably, the gap between the two adjacent first filter plates of the adjacent groups is centrally opposite to the ball center position of the second filter ball along the airflow direction.

[0021] By adopting the technical scheme, when the paint mist enters from the gap between the first filter plates, the paint mist can directly collide with the surface of the second filter ball, thereby having a good uniform dispersion and adsorption effect, and reducing the situation that the paint mist directly leaks from the gap between the second filter balls to the third filter layer.

[0022] Preferably, the surface of the second filter ball is provided with at least one group of two parallel planes, the surface connecting the two planes of the second filter ball is a circular arc surface, the third filter ball has the same shape as the second filter ball, and both are hollow structures with a plurality of through holes formed on the surface.

[0023] By adopting the technical scheme, the circular arc surface of the filter ball can increase the specific surface area of the filter ball, which is beneficial to improve the filtering effect on the paint mist, and the plane of the filter ball can make the adjacent filter balls closely contact and be placed more stably in the box, thereby reducing the problem of airflow deceleration caused by the airflow blowing the filter ball to rotate or vibrate.

[0024] Preferably, the planes of different groups of the surface of the secondary filter ball are perpendicular to each other.

[0025] By adopting the technical scheme, the filter ball can be stably arranged between the adjacent filter balls in the vertical, horizontal or longitudinal direction when the filter balls are laid in order, which further improves the filtering effect, and the worker can lay the filter balls more quickly, because the worker only needs to pour the filter balls of the number of a single layer to be laid into the shell, and shake the shell horizontally to make the adjacent filter balls rotate until the planes of the adjacent filter balls are closely attached to each other, thereby reducing the trouble of laying the filter balls one by one.

[0026] Preferably, the filling material of the secondary filter ball and the tertiary filter ball is any one or more of paint-resistant glass fiber, activated carbon cotton, filter cotton, stainless steel wire or plastic wire.

[0027] By adopting the technical scheme, a more abundant specific surface area flow channel is formed in the filter ball, and the paint mist is deflected and collided when passing through the flow channel at high speed, so as to be intercepted and adsorbed by the filling material in the filter ball.

[0028] Preferably, the filtering material of the primary filter plate and the fourth filter plate includes multiple layers of glass fiber paint-resistant cotton and activated carbon filter cotton.

[0029] By adopting the technical scheme, the multiple layers of glass fiber paint-resistant cotton and activated carbon filter cotton can have good interception and adsorption effect on the paint mist with small flow rate, so that the paint mist that is not accelerated in the gap and the airflow after being decelerated by the tertiary filter layer can also have good adsorption and purification efficiency.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. By arranging a first filter layer, a second filter layer, a third filter layer and a fourth filter layer in the shell in sequence along the airflow direction, large particle paint mist can obtain a preliminary adsorption effect in the first filter plate, then pass through the second filter ball and the third filter ball with smaller size in sequence, so that the paint mist can be captured and separated by filtration in the process of developing flow in the internal flow channel of the filter ball, and finally pass through the precise interception filtration of the fourth filter plate, so that the paint mist particles can be fully and accurately intercepted and adsorbed layer by layer, and the paint mist filtration efficiency is higher than that of the traditional plane filter layer;

[0032] 2. By aligning and arranging the second filter ball and the third filter ball, many pores extending along the airflow direction and penetrating through are formed in the second filter layer and the third filter layer, which not only enables the paint mist to maintain a high flow rate in the second filter layer and collide at high speed, but also enables the airflow entering the third filter layer from the second filter layer to accelerate in the flow with gradually decreasing size, and continue to collide at high speed in the third filter layer, thereby effectively improving the interception and capture filtration effect of the filter ball on the paint mist;

[0033] 3. By arranging the first filter plate in a "V" shape, the contact area of the paint mist with the first filter plate in the first filter layer can be increased, the airflow can be better adsorbed and filtered between the two first filter plates forming an included angle in the flow direction, and the gap left in the middle can accelerate the airflow containing the paint mist, so that the paint mist quickly flows to the second filter layer, which helps to improve the interception and capture filtration effect of the second filter ball on the paint mist. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is the overall structure schematic diagram in the embodiment of the application;

[0035] Figure 2 is another angle schematic diagram of the overall structure in the embodiment of the application;

[0036] Figure 3 is a cross-sectional structure schematic diagram in the embodiment of the application;

[0037] Figure 4 is a second filter ball structure schematic diagram in the embodiment of the application.

[0038] Explanation of reference signs: 1, shell; 11, air inlet; 12, air outlet; 2, first filter layer; 21, first filter plate; 22, mounting seat; 3, second filter layer; 31, second filter ball; 31-a, plane; 31-b, circular arc surface; 4, third filter layer; 41, third filter ball; 42, separation mesh; 5, fourth filter layer. DETAILED DESCRIPTION

[0039] The application will be further described below in conjunction with the accompanying drawings. Figures 1-4 The application will be further described below in conjunction with the accompanying drawings.

[0040] The application discloses a paint mist separation adsorption filter device.

[0041] The application discloses a paint mist separation adsorption filter device. Figures 1-2 The application discloses a paint mist separation adsorption filter device. Figure 3 The application discloses a paint mist separation adsorption filter device.

[0042] The application discloses a paint mist separation adsorption filter device. Figure 3 The application discloses a paint mist separation adsorption filter device.

[0043] The application discloses a paint mist separation adsorption filter device. Figure 1 , Figure 3 The application discloses a paint mist separation adsorption filter device.

[0044] The application discloses a paint mist separation adsorption filter device. Figure 3The second filter layer 3 comprises a plurality of second filter balls 31 of the same shape and size, the diameter of the second filter ball 31 is greater than the gap between the end portions of the two adjacent first filter plates 21 of the adjacent group close to the air inlet 11, and is less than the gap between the end portions of the two adjacent first filter plates 21 of the adjacent group close to the air outlet 12. In this embodiment, the second filter balls 31 along the airflow direction are arranged in four layers, and the laying number of the second filter balls 31 in each layer is 9*9, the second filter balls 31 of adjacent layers are arranged in alignment, so that the center connection line between the second filter balls 31 of adjacent layers and in contact is parallel to the airflow direction, the pores between the second filter balls 31 of each layer are through, and the pores between the second filter balls 31 of the same layer are staggered with the gap of the adjacent “V”-shaped first filter plates 21 of the first filter layer 2, so that the center of the gap between the adjacent “V”-shaped first filter plates 21 is opposite to the center of the second filter ball 31 along the airflow direction.

[0045] Specifically, the shape of the second filter ball 31 is shown in Figure 4 The surface of the second filter ball 31 is provided with six equal planes 31-a, two parallel planes 31-a form a group, the center line of the two planes 31-a in the same group passes through the center of the second filter ball 31, and the three groups of planes 31-a are perpendicular to each other, so that the second filter ball 31 has two parallel and symmetrical planes 31-a in the transverse axis, longitudinal axis and vertical axis directions, and the six planes 31-a on the surface of the second filter ball 31 can facilitate the better arrangement of the second filter balls 31 between the same layer and adjacent layers, so that the workers are more convenient during installation. In addition, the surface connecting the six planes 31-a is a circular arc surface 31-b, so that the shape of the second filter ball 31 has a larger specific surface area, which is beneficial to make the paint mist particles collide and adsorb better. The second filter ball 31 is a hollow structure, and a plurality of filter through holes are arranged on the surface thereof, and the filling material in the second filter ball 31 is nylon wire ball, so that the second filter ball 31 has a developed specific surface area flow channel inside, and in other embodiments, the filling material in the second filter ball 31 can also be any one or more of paint-resistant glass fiber, activated carbon cotton, filter cotton, stainless steel wire or plastic wire.

[0046] Referring to Figure 3The third-stage filter layer 4 includes several third-stage filter balls 41 of the same shape and size. The shape and filling material of the third-stage filter balls 41 are the same as those of the second-stage filter balls 31, but the size is smaller than that of the second-stage filter balls 31. In this embodiment, eight layers of third-stage filter balls 41 are arranged along the airflow direction, with 33×33 third-stage filter balls 41 laid in each layer. The third-stage filter balls 41 in adjacent layers are aligned, so that the connecting line between the centers of the third-stage filter balls 41 in adjacent layers and in contact is parallel to the airflow direction, and through pores are formed between the third-stage filter balls 41 in each layer. Three partition meshes 42, which are the same size as the cross-section of the inner cavity of the housing 1, are installed inside the housing 1. The three partition meshes 42 are located at the edge of the secondary filter layer 3 near the primary filter layer 2, the edge of the tertiary filter layer 4 near the air outlet 12, and the edge where the secondary filter layer 3 and the tertiary filter layer 4 meet. The partition meshes 42 stably fix the secondary filter ball 31 and the tertiary filter ball 41 in the housing 1, and make the secondary filter layer 3 and the tertiary filter layer 4 closely arranged.

[0047] Reference Figure 2 , Figure 3 The fourth-stage filter layer 5 is a four-stage filter plate with the same cross-sectional area as the inner cavity of the housing 1. The filter material of the fourth-stage filter plate is multi-layer glass fiber paint-blocking cotton and activated carbon filter cotton. The fourth-stage filter plate is closely attached to and covers the air outlet 12, so that paint mist particles leaking from the third-stage filter ball 41 can be accurately intercepted and filtered by the fourth-stage filter plate. Testing showed that the filtration efficiency of the paint mist separation and adsorption filtration device in this embodiment reaches over 95%.

[0048] The implementation principle of this application embodiment is as follows:

[0049] The paint mist separation adsorption filter device is installed at a position where air needs to be purified, an exhaust device is installed on one side of the air outlet 12 of the filter device, so that the airflow flows from the air inlet 11 side of the filter device to the air outlet 12 side. When the paint mist enters the primary filter layer 2, the V-shaped primary filter plate 21 can capture and adsorb large particle paint mist, the gap between the adjacent V-shaped primary filter plates 21 can accelerate the airflow, and the center of the gap is opposite to the ball center position of the secondary filter ball 31, so that the paint mist particles flowing from the gap into the secondary filter layer 3 can directly collide with the surface of the secondary filter ball 31, thereby having higher adsorption efficiency. After the paint mist passes through the secondary filter ball 31 which is densely laid in multiple layers, the airflow is accelerated when it enters the tertiary filter layer 4, and under the push of the accelerated airflow in the upper part, the airflow accelerates to the tertiary filter layer 4, so that the airflow can maintain a high airflow speed when flowing through the secondary filter layer 3 and the tertiary filter layer 4, which helps the paint mist particles to better pass through high-speed collision to achieve good adsorption and retention effect. After being intercepted and adsorbed by the multiple layers of resistance in the tertiary filter layer 4, a uniform airflow is formed and flows to the fourth filter plate which completely covers the air outlet 12, so that the paint mist leaked from the front tertiary filter layer 4 can be precisely intercepted and adsorbed. By arranging the primary filter layer 2, the secondary filter layer 3, the tertiary filter layer 4 and the fourth filter layer 5 in the shell 1 in turn, the filter device of the present application has higher paint mist adsorption efficiency compared with the traditional filter device which uses scattered filler or flat filter layer as filter material.

[0050] The above are preferred embodiments of the present application, and the embodiments are only an explanation of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A paint mist separating and adsorbing filter device, characterized by, The utility model provides a filter, including: The opposite two sides of shell (1) are provided with air inlet (11) and air outlet (12) respectively; Primary filter layer (2), including the primary filter board (21) of setting in the shell (1) near the air inlet (11) one side; Secondary filter layer (3), including a plurality of secondary filter balls (31), a plurality of secondary filter balls (31) are fixed in the shell (1) and are located on the side of primary filter layer (2) away from air inlet (11), and the secondary filter ball (31) is tightly laid with a plurality of layers in the shell (1); Tertiary filter layer (4), including a plurality of tertiary filter balls (41), a plurality of tertiary filter balls (41) are fixed in the shell (1) and are located on the side of secondary filter layer (3) away from air inlet (11), and the tertiary filter ball (41) is tightly laid with a plurality of layers in the shell (1), and the size of the tertiary filter ball (41) is less than the secondary filter ball (31); Quaternary filter layer (5), including the quaternary filter board of setting in the shell (1) and being located on the side of tertiary filter layer (4) away from air inlet (11), the quaternary filter board covers air outlet (12); The secondary filter ball (31) between adjacent layers along the direction of airflow is arranged in alignment, the ball center connecting line of the secondary filter ball (31) of adjacent layers and contact is parallel with the direction of airflow, the tertiary filter ball (41) between adjacent layers along the direction of airflow is arranged in alignment, the ball center connecting line of the tertiary filter ball (41) of adjacent layers and contact is parallel with the direction of airflow; The primary filter board (21) is provided with a plurality of blocks, a plurality of primary filter boards (21) are arranged horizontally and are obliquely arranged in the shell (1), the oblique direction of the primary filter board (21) is not parallel with the direction of airflow, the oblique direction of adjacent primary filter boards (21) is opposite, every two primary filter boards (21) are a group, the included angle between the primary filter board (21) of the same group is open to the air inlet (11), and the gap between two adjacent primary filter boards (21) of adjacent groups is left; The diameter of the secondary filter ball (31) is greater than the gap between the end of two adjacent primary filter boards (21) of adjacent groups close to the air inlet (11), and is less than the gap between the end of two adjacent primary filter boards (21) of adjacent groups close to the air outlet (12); The gap central of two adjacent primary filter boards (21) of adjacent groups is opposite the ball center position of the secondary filter ball (31) along the direction of airflow.

2. The paint mist separating and adsorbing filter device according to claim 1, characterized in that, The surface of the secondary filter ball (31) is provided with at least a group of two parallel planes (31-a), the surface of the secondary filter ball (31) is connected between the plane (31-a) and is a circular arc surface (31-b), the tertiary filter ball (41) is consistent with the shape of the secondary filter ball (31), and both are cavity structures with a plurality of through holes on the surface.

3. The paint mist separating and adsorbing filter device according to claim 2, characterized in that, The planes (31-a) of different groups of the secondary filter ball (31) are perpendicular to each other.

4. The paint mist separating and adsorbing filter device according to claim 1, characterized in that, The shell (1) is internally provided with a mounting seat (22), a plurality of mounting grooves are formed in the mounting seat (22), and the first filter plate (21) is fixed in the shell (1) by being clamped in the mounting grooves.

5. The paint mist separating and adsorbing filter device according to claim 1, characterized in that, The filling materials of the second filter ball (31) and the third filter ball (41) are any one or more of doped glass fiber, activated carbon cotton, filter cotton, stainless steel wire or plastic wire.

6. The paint mist separating and adsorbing filter device according to claim 1, wherein The filter materials of the first filter plate (21) and the fourth filter plate include a plurality of layers of glass fiber resistive paint cotton and activated carbon filter cotton.

Images