Paint mist removing equipment suitable for spraying industry
By designing a paint removal mist equipment for the spraying industry, using the connection between the spray chamber and the drying chamber to achieve triple filtration, and using air to agitate during cleaning, the problems of frequent replacement of filter bags in existing equipment and large footprints are solved, achieving more efficient particulate removal and lower operating costs.
Patent Information
- Application Number
- CN202422017826.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The paint removal and mist equipment in the existing spraying industry has the problems of frequent replacement of filter bags and large space, which leads to high operating costs and blocked equipment and difficult to clean.
A paint removal mist device including a spraying mechanism and a drying filtering mechanism is designed to realize triple filtration through the connection between the spraying chamber and the drying chamber, and to improve the physical washing effect by using air agitation during cleaning.
It improves the retention rate of particulate matter in the exhaust gas, extends the service life of the filter bag, saves floor space, and improves the physical washing effect.
Smart Images
Figure CN222969511U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of paint mist removal equipment, in particular to a paint mist removal equipment applicable to the spraying industry. Background Technique
[0002] Generally, the waste gas treatment system in the spraying industry uses a zeolite rotor + RTO or a zeolite rotor + RCO as the main waste gas treatment process. Before entering the zeolite, it is necessary to treat the paint mist and particulate matter in the waste gas to prevent the paint mist and particulate matter from entering the subsequent zeolite rotor and blocking the equipment. The existing traditional paint mist removal equipment is generally a dry filter equipped with filter bags. The filter generally uses 4 layers of filter bags (G4, G5, F7, F9), and each layer of filter bag is equipped with a differential pressure gauge. When the differential pressure gauge is greater than the set value, an alarm will be given to replace the filter bag.
[0003] In actual project applications, due to a large amount of paint mist and paint slag in the spraying waste gas, the filter bags need to be replaced frequently, especially the G4 and G5 layers of filter bags. Normally, they need to be replaced once in less than a week, and the replaced filter bags must be disposed of as hazardous waste. Therefore, in the waste gas treatment system of spraying, the cost of replacing and disposing of filter bags accounts for a large proportion of the system operation cost. At the same time, in some projects, some manufacturers also use spray towers for paint mist removal treatment. However, because the commonly used ones are conventional spray towers (designed for absorbing acids and alkalis), the paint mist removal effect is average. After long-term operation, the packing inside the tower body (Pall rings or multi-faceted hollow balls) is easily blocked by paint mist, and the packing is not easy to clean. After being blocked, it is necessary to manually enter the tower through the inspection hole to fish out the packing outside the tower for cleaning or directly dispose of it as waste. Therefore, there is an urgent need for an improved technology to solve this problem existing in the prior art. Content of the Utility Model
[0004] The purpose of the utility model is to provide a paint mist removal equipment applicable to the spraying industry. The drying bin is supported on the support block on the upper surface of the spray bin and is connected to the first interface of the spray bin through the second interface. On the one hand, triple filtration is realized, and the interception rate of particulate matter in the waste gas is greatly improved. After directly entering the subsequent dry filtration unit, the use effect and service life of the filter bag can be improved. On the other hand, the occupied space is saved. Secondly, air inlets are arranged on both sides of the spray bin. When cleaning the first packing and the second packing, the physical washing effect is greatly improved through air agitation, so as to solve the problems put forward in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: a paint mist removal equipment applicable to the spraying industry, including a spray mechanism and a drying and filtering mechanism;
[0006] The spray mechanism includes a spray chamber. A middle partition is arranged at the middle position inside the spray chamber. The interior of the spray chamber is divided into a first spray chamber and a second spray chamber by the middle partition. A first wire mesh and a first packing are arranged inside the spray chamber and within the first spray chamber. The first packing is supported by the first wire mesh. A second wire mesh and a second packing are arranged inside the spray chamber and within the second spray chamber. The second packing is supported by the second wire mesh. The middle partition is provided with through holes at positions below the first wire mesh and the second wire mesh. Air inlets are arranged on both sides of the spray chamber and above the first wire mesh and the second wire mesh. An air inlet is arranged on the upper surface of the spray chamber and at the position of the first spray chamber. A first interface is arranged on the upper surface of the spray chamber and at the position of the second spray chamber. Support blocks are also arranged on the upper surface of the spray chamber. A spray pipe is arranged above the interior of the spray chamber through a hanging member. The spray pipe passes through the middle partition and is arranged in the upper parts inside the first spray chamber and the second spray chamber. A number of large-diameter water-dispersing nozzles are evenly arranged on the spray pipe.
[0007] The drying and filtering mechanism includes a drying chamber. A second interface is arranged on the lower surface of the drying chamber. The second interface and the first interface are connected to each other through a flange. An air outlet is arranged on one side of the upper part of the drying chamber. The bottom of the drying chamber is also supported on the upper surface of the support block. A thick wire mesh demister, a third packing, and a filter felt are arranged inside the drying chamber. The third packing is supported on the upper surface of the thick wire mesh demister. A boss is arranged on the inner wall of the drying chamber. The periphery of the filter felt is connected to a frame. The frame is supported on the upper surface of the boss.
[0008] Preferably, for a paint mist removal device applicable to the spraying industry provided by the present invention, a first manhole is arranged on the side surface of the spray chamber and at the position of the first spray chamber. A second manhole is arranged on the side surface of the spray chamber and at the position of the second spray chamber. A third manhole is arranged on the side surface of the drying chamber. Visual covers are arranged at the outer ends of the first manhole, the second manhole, and the third manhole.
[0009] Preferably, for a paint mist removal device applicable to the spraying industry provided by the present invention, drain outlets are arranged at the bottom of the spray chamber and at the positions of the first spray chamber and the second spray chamber.
[0010] Preferably, for a paint mist removal device applicable to the spraying industry provided by the present invention, a support seat is arranged at the bottom of the spray chamber.
[0011] Preferably, for a paint mist removal device applicable to the spraying industry provided by the present invention, the cross section of the support block is L-shaped, and the support block is fixedly connected to the drying chamber through bolts.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] The drying chamber is supported on the support blocks on the upper surface of the spray chamber and is connected to the first interface of the spray chamber through the second interface. On the one hand, triple filtration is achieved, and the interception rate of particulate matter in the waste gas is greatly improved. After directly entering the subsequent dry filtration unit, the service effect and life of the filter bag can be improved. On the other hand, the floor space is saved. Secondly, air inlets are arranged on both sides of the spray chamber. When cleaning the first filler and the second filler, the physical washing effect is greatly improved through air agitation. Brief Description of the Drawings
[0014] Figure 1 It is a schematic structural diagram of the present utility model.
[0015] In the figure: spray chamber 1, middle partition 2, first spray chamber 3, second spray chamber 4, first wire mesh 5, first filler 6, second wire mesh 7, second filler 8, through hole 9, air inlet 10, air inlet 11, first interface 12, support block 13, hanging part 14, spray pipe 15, large-diameter water-dispersing nozzle 16, drying chamber 17, second interface 18, air outlet 19, thick wire mesh demister 20, third filler 21, filter felt 22, convex platform 23, frame 24, first manhole 25, second manhole 26, third manhole 27, drain port 28, support seat 29. Detailed Embodiment
[0016] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model;
[0017] It should be noted that in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inside", "outside", "above", "below", "both sides", "one end", "the other end", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0018] Please refer to Figure 1 , the present utility model provides a technical solution: a paint mist removal device suitable for the spraying industry, including a spray mechanism and a drying and filtering mechanism;
[0019] The spraying mechanism includes a spraying chamber 1. A middle partition 2 is arranged at the middle position inside the spraying chamber 1. The inside of the spraying chamber 1 is divided into a first spraying cavity 3 and a second spraying cavity 4 by the middle partition 2. A first wire mesh 5 and a first filler 6 are arranged inside the spraying chamber 1 and within the first spraying cavity 3. The first filler 6 is supported on the first wire mesh 5. A second wire mesh 7 and a second filler 8 are arranged inside the spraying chamber 1 and within the second spraying cavity 4. The second filler 8 is supported on the second wire mesh 7. The middle partition 2 is provided with a through hole 9 at a position below the first wire mesh 5 and the second wire mesh 7. Air inlets 10 are arranged on both sides of the spraying chamber 1 and above the first wire mesh 5 and the second wire mesh 7. An air inlet 11 is arranged on the upper surface of the spraying chamber 1 and at the position of the first spraying cavity 3. A first interface 12 is arranged on the upper surface of the spraying chamber 1 and at the position of the second spraying cavity 4. A support block 13 is also arranged on the upper surface of the spraying chamber 1. A spraying pipe 15 is arranged above the inside of the spraying chamber 1 through a hanging member 14. The spraying pipe 15 passes through the middle partition 2 and is arranged at the upper parts inside the first spraying cavity 3 and the second spraying cavity 4. A number of large-diameter water-dispersing nozzles 16 are evenly arranged on the spraying pipe 15. Drainage ports 28 are arranged at the bottom of the spraying chamber 1 and at the positions of the first spraying cavity 3 and the second spraying cavity 4 to discharge waste water. A support base 29 is arranged at the bottom of the spraying chamber 1 to raise and support the whole;
[0020] The drying and filtering mechanism includes a drying chamber 17. A second interface 18 is arranged on the lower surface of the drying chamber 17. The second interface 18 is connected to the first interface 12 through a flange. An air outlet 19 is arranged on one side of the upper part of the drying chamber 17. The bottom of the drying chamber 17 is also supported on the upper surface of the support block 13. The cross section of the support block 13 is L-shaped. The support block 13 is fixedly connected to the drying chamber 17 by bolts to ensure the stability of the drying chamber 17. A thick wire mesh demister 20, a third filler 21 and a filter felt 22 are arranged inside the drying chamber 17. The third filler 21 is supported on the upper surface of the thick wire mesh demister 20. A boss 23 is arranged on the inner wall of the drying chamber 17. The periphery of the filter felt 22 is connected to a frame 24. The frame 24 is supported on the upper surface of the boss 23;
[0021] A first manhole 25 is arranged on the side of the spraying chamber 1 and at the position of the first spraying cavity 3. A second manhole 26 is arranged on the side of the spraying chamber 1 and at the position of the second spraying cavity 4. A third manhole 27 is arranged on the side of the drying chamber 17. Visual covers are arranged at the outer ends of the first manhole 25, the second manhole 26 and the third manhole 27. Internal inspection can be realized through the first manhole 25, the second manhole 26 and the third manhole 27, and at the same time, the replacement of the corresponding fillers can be realized.
[0022] Installation method and operating principle: Suspend the air outlet 19 by a crane, lift the drying bin 17 to the upper surface of the spray bin 1, and support the bottom of the drying bin 17 on the upper surface of the support block 13. Connect the second interface 18 to the first interface 12, and then connect the baffle of the support block 13 to the drying bin 17 with bolts to complete the assembly. In the drying bin 17, a wire mesh demister 20 with a thickness of 0.2 m, a filter felt 22 with a thickness of 0.1 m, and the third packing 21 is a φ26 polyhedral hollow ball with a thickness of 0.5 m (specific surface area 500 m2 / m3, packing density 85,000 pieces / m3). Before use, put the first packing 6 (φ50 polyhedral hollow ball) into the first spray chamber 3 of the spray bin 1 (specific surface area 210 m2 / m3, packing density 12,600 pieces / m3) from the first manhole 25, and put the second packing 8 (φ38 polyhedral hollow ball) into the second spray chamber 4 of the spray bin 1 (specific surface area 300 m2 / m3, packing density 23,900 pieces / m3) from the second manhole 26. During use, the waste gas generated after spraying enters the spray bin 1 from the air inlet 11, mainly aiming to increase the gas-liquid atomization contact and improve the acid-base absorption efficiency. The waste gas first adsorbs particles through the first packing 6, then passes through the through hole 9 of the middle partition 2 and adsorbs particles through the second packing 8, then passes through the first interface 12 and the second interface 18 and enters the drying bin 17, further filters the particles in the waste gas through the thick wire mesh demister 20 and the third packing 21, and finally dries and absorbs water through the filter felt 22 to complete the removal of particles in the waste gas. During cleaning, water is also sent through the spray pipe 15 and sprayed out from the large-diameter water-dispersing nozzle 16, and then air (plant internal gas source or air compressor) is sent into the first spray chamber 3 and the second spray chamber 4 of the spray bin 1 through the air inlet 10 to stir the first packing 6 and the second packing 8, thereby improving the physical washing effect. The structure of the present utility model is reasonable. The drying bin 17 is supported on the support block 13 on the upper surface of the spray bin 1 and is connected to the first interface 12 of the spray bin 1 through the second interface 18. On the one hand, triple filtration is achieved, and the interception rate of particulate matter in the waste gas is greatly improved. After directly entering the subsequent dry filtration unit, the service effect and life of the filter bag can be improved. On the other hand, the occupied space is saved. Secondly, air inlets 10 are arranged on both sides of the spray bin 1. When cleaning the first packing 6 and the second packing 8, the physical washing effect is greatly improved through air agitation.
[0023] For those parts not detailed in the present utility model, they are all well-known technologies to those skilled in the art.
[0024] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.
Claims
1. A paint mist removal device suitable for the spraying industry, characterized by: Including spraying mechanism and drying and filtering mechanism; The spray mechanism comprises a spray chamber (1), wherein a middle partition (2) is arranged in the middle position inside the spray chamber (1), and the inside of the spray chamber (1) is divided into a first spray chamber (3) and a second spray chamber (4) by the middle partition (2); a first steel wire mesh (5) and a first filler (6) are arranged inside the spray chamber (1) and located in the first spray chamber (3), and the first filler (6) is supported on the first steel wire mesh (5); a second steel wire mesh (7) and a second filler (8) are arranged inside the spray chamber (1) and located in the second spray chamber (4), and the second filler (8) is supported on the second steel wire mesh (7); the middle partition (2) is provided with a through hole ( 9), air inlets (10) are arranged on both sides of the spray bin (1) and located above the first steel mesh (5) and the second steel mesh (7), an air inlet (11) is arranged on the upper surface of the spray bin (1) and located at the first spray chamber (3), a first interface (12) is arranged on the upper surface of the spray bin (1) and located at the second spray chamber (4), a support block (13) is also arranged on the upper surface of the spray bin (1), a spray pipe (15) is arranged above the interior of the spray bin (1) through a hanging piece (14), the spray pipe (15) passes through the middle partition (2) and is arranged at the upper part of the first spray chamber (3) and the second spray chamber (4), and the spray pipe (15) is evenly provided with a plurality of large-caliber water spray nozzles (16); The drying and filtering mechanism comprises a drying chamber (17), a second interface (18) being arranged on the lower surface of the drying chamber (17), the second interface (18) being connected to the first interface (12) via a flange, an air outlet (19) being arranged on one side of the upper part of the drying chamber (17), the bottom of the drying chamber (17) being also supported on the upper surface of a support block (13), a thick wire mesh demister (20), a third filler (21) and a filter felt (22) being arranged inside the drying chamber (17), the third filler (21) being supported on the upper surface of the thick wire mesh demister (20), a boss (23) being arranged on the inner wall of the drying chamber (17), the periphery of the filter felt (22) being connected to a frame (24), and the frame (24) being supported on the upper surface of the boss (23).
2. The paint mist removal equipment suitable for the spraying industry according to claim 1 is characterized in that: A first manhole (25) is provided on the side of the spray chamber (1) and located at the first spray chamber (3), a second manhole (26) is provided on the side of the spray chamber (1) and located at the second spray chamber (4), and a third manhole (27) is provided on the side of the drying chamber (17), and visible cover plates are provided at the outer ends of the first manhole (25), the second manhole (26) and the third manhole (27).
3. The paint mist removal equipment suitable for the spraying industry according to claim 1 is characterized in that: Drainage outlets (28) are provided at the bottom of the spray bin (1) and located at the first spray chamber (3) and the second spray chamber (4).
4. The paint mist removal equipment suitable for the spraying industry according to claim 1 is characterized in that: A support seat (29) is provided at the bottom of the spray bin (1).
5. The paint mist removal equipment suitable for the spraying industry according to claim 1 is characterized in that: The cross section of the support block (13) is L-shaped, and the support block (13) is fastened to the drying bin (17) by bolts.