Device for separating overspray

Abstract

The invention discloses a device for separating overspray. The device is characterized in that an over-spraying separation module comprises a shell, a baffle separation area and a porous net separation area, the baffle separation area and the porous net separation area are arranged in the shell, and the baffle separation area is located above the porous net separation area; an air inlet is formed in the top of the shell, an air outlet is formed in the bottom of the shell, and the airflow direction is the direction from the air inlet to the air outlet. According to the invention, the problem of high operation cost of separation of over-sprayed paint mist in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial coating, in particular to a device for separating overspray. Background Art

[0002] When painting industrial equipment, especially automobile bodies, paint is typically atomized into particles using a spray gun or rotary cup. Often, not all of the paint particles adhere to the workpiece; some are released into the surrounding air. This overspray is called "overspray."

[0003] Overspray is carried away by the airflow in the spray booth and enters an overspray separation device, where it is removed. A commonly used solution currently involves placing a disposable overspray separation module, typically made of materials such as paper and fiber, within the overspray separation device. As the airflow carrying overspray passes through this module, the overspray adheres to the module, thereby purifying the airflow. When a module absorbs a certain amount of overspray, it is replaced with a new one, and the replaced module is disposed of as waste or recycled.

[0004] The disposable overspray separation module is a consumable material that needs to be used and replaced with a new module during the production process, which increases operating costs.

[0005] In some countries and regions, replaced disposable overspray separation modules can only be treated as hazardous waste, requiring the manufacturer to pay part of the fee, which also increases operating costs.

[0006] In the related art, the technical problem of high operating costs for separating overspray mist has not yet been effectively solved. Summary of the Invention

[0007] The object of the present invention is to provide a device for separating overspray, so as to solve the problem of high operating cost of separating overspray paint mist in the related art.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: the overspray separation module includes an outer shell, a baffle separation area and a porous mesh separation area. The baffle separation area and the porous mesh separation area are placed inside the outer shell, and the baffle separation area is located above the porous mesh separation area; an air inlet is provided at the top of the outer shell, and an air outlet is provided at the bottom of the outer shell, and the air flow direction is from the air inlet to the air outlet.

[0009] It is further configured as follows: the baffle separation area includes at least one layer of baffle units, and the baffle units are arranged along the airflow direction; the baffle unit includes a baffle unit frame and a baffle, and the baffle is fixed on the baffle unit frame; the baffle is in a long strip shape, and multiple baffles are arranged in parallel along the length direction, with a gap between two baffles, and the gap in each layer of baffle units decreases layer by layer in the direction from the air inlet to the air outlet; the distance between the baffle unit of the lower layer and any structure of the upper layer is greater than the gap distance of the baffle unit of the lower layer.

[0010] It is further configured as follows: a limiting groove is provided inside the shell, and the limiting groove is used to place the baffle unit frame.

[0011] It is further configured as follows: the porous mesh separation area includes at least one layer of porous mesh units, and the porous mesh units are arranged along the airflow direction.

[0012] The configuration is further as follows: the porous mesh unit includes a porous mesh unit frame and a porous mesh, the porous mesh is fixed on the porous mesh unit frame; the porous mesh is a sheet material with an arbitrary number of holes of a specific size or shape, the holes of the porous mesh in each layer of the porous mesh unit decrease layer by layer in the direction from the air inlet to the air outlet; the distance between the porous mesh unit of the lower layer and the porous mesh unit or the baffle unit of the upper layer is greater than the size of the holes of the porous mesh unit of the lower layer.

[0013] It is further configured as follows: a limiting groove is provided inside the shell, and the limiting groove is used to place the porous mesh unit frame.

[0014] It is further configured that any side wall panel of the shell is a movable wall panel.

[0015] It is further configured as: a back-blowing device, the back-blowing device includes a back-blowing exhaust pipe, and the back-blowing device is used to clean the used overspray separation module; the used overspray separation module is placed in the back-blowing device after heat treatment, and the back-blowing device drives the air flow to enter from the air outlet and blow out from the air inlet, blowing the overspray residue into the back-blowing exhaust pipe.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are:

[0017] In terms of separation efficiency, the module adopts a combined structure of baffle separation area and porous mesh separation area. The staggered arrangement of adjacent layers of baffles extends the airflow path. Combined with the gradient design of gradually decreasing gap / hole size, a graded separation mode of "first intercepting large particles and then capturing small particles" is formed, which greatly improves the comprehensiveness of overspray interception. It can not only efficiently capture overspray particles of different sizes, but also avoid the failure of small gaps due to clogging by large particles, significantly improving the separation stability within a single use cycle.

[0018] In terms of maintenance convenience, the movable wall panel design and the removable baffle unit and porous mesh unit enable the rapid replacement or cleaning of local components of the module without the need for overall disassembly, reducing maintenance downtime and reducing operational complexity; at the same time, the design of the interlayer structure spacing being larger than the gap / hole size ensures that each layer reaches the saturated adsorption state simultaneously. When the module is basically blocked and no airflow passes through it, and loses the separation overspray function and needs to be replaced, a higher overall paint mist adsorption capacity can be obtained. The module will not be completely blocked in advance and no airflow passes through it, while other layers have not yet reached the saturated adsorption state, thereby reducing the overall paint mist adsorption capacity.

[0019] In terms of economy and environmental protection, the reuse of modules is achieved through the cyclic process of "adsorption and deposition-module replacement-heat treatment-backflushing reuse": the replaced modules are heat-treated to remove stubborn residues, and the backflushing equipment is used to clean the baffle intervals and pore blockages, so that the separation performance can be restored, greatly reducing the consumption of consumables; combined with the design of individually replaceable units, the cost of unnecessary component replacement is further reduced, which not only improves resource utilization but also meets the needs of green production.

[0020] In summary, through structural optimization and circulation mechanism, the solution achieves the core goals of "easy to replace, long life, and reusability" of the module while ensuring high separation efficiency, taking into account separation performance, maintenance convenience, and economic and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A perspective view of an overspray separation module is shown;

[0023] Figure 2 shows a cross-sectional view of an overspray separation module;

[0024] Figure 3 A perspective view showing a baffle unit;

[0025] Figure 4 showing a cross-sectional view of the baffle unit;

[0026] Figure 5 A perspective view showing a porous mesh unit;

[0027] Figure 6 A cross-sectional view showing a porous mesh unit;

[0028] Figure 7 A cross-sectional view of the overspray separation module is shown, also illustrating the path of the airflow;

[0029] Figure 8 A cross-sectional view of an overspray separation module is shown, also illustrating the deposition effect of overspray;

[0030] Figure 9 A cross-sectional view of an overspray separation module is shown, showing the dimensional features of the internal structure;

[0031] Figure 10 A perspective view of the overspray separation module is shown, wherein the movable wall panel is opened and the baffle unit and the porous mesh unit can be taken out;

[0032] Figure 11 A cross-sectional view of the overspray separation module is shown, showing a solution in which the baffle unit and the porous mesh unit are positioned within the housing;

[0033] Figure 12 A cross-sectional view of the overspray separation module is shown, showing a second solution in which the baffle unit and the porous mesh unit are positioned within the housing;

[0034] Figure 13 A cross-sectional view showing a second preferred embodiment of the baffle separation region in the overspray separation module;

[0035] Figure 14 A perspective cross-sectional view showing a second preferred embodiment of the baffle separation region in the overspray separation module;

[0036] Figure 15 A cross-sectional view showing a third preferred embodiment of the baffle separation region in the overspray separation module;

[0037] Figure 16 A perspective cross-sectional view showing a third preferred embodiment of the baffle separation region in the overspray separation module;

[0038] Figure 17 A cross-sectional view showing a fourth preferred embodiment of the baffle separation region in the overspray separation module;

[0039] Figure 18 A perspective cross-sectional view showing a fourth preferred embodiment of the baffle separation region in the overspray separation module;

[0040] Figure 19 A cross-sectional view showing a second preferred embodiment of the porous mesh separation area in the overspray separation module;

[0041] Figure 20 A perspective cross-sectional view showing a second preferred embodiment of the porous mesh separation area in the overspray separation module;

[0042] Figure 21 A cross-sectional view showing a third preferred embodiment of the porous mesh separation area in the overspray separation module;

[0043] Figure 22 A perspective cross-sectional view showing a third preferred embodiment of the porous mesh separation area in the overspray separation module;

[0044] Figure 23 A three-dimensional cross-sectional view showing another direction of the third preferred embodiment of the porous mesh separation area in the overspray separation module;

[0045] Figure 24 A schematic diagram showing the coating equipment;

[0046] Figure 25 Shows the schematic diagram of the backflush equipment.

[0047] Reference numerals: 01, overspray separation module; 02, coating equipment; 03, spray chamber; 04, workpiece; 05, sprayer; 06, conveying equipment; 07, overspray separation equipment; 08, guide chamber; 09, exhaust chamber; 10, housing; 11, air inlet; 12, air outlet; 13, movable wall panel; 14, limiting groove; 15, fixed limiting block; 16, movable limiting block; 20, baffle separation area; 20.1, first baffle unit; 20.2 Second baffle unit; 20.3 third baffle unit; 21, baffle unit frame; 22, baffle; 23, gap; 30, porous mesh separation area; 30.1 first porous mesh unit; 30.2, second porous mesh unit; 30.3 third porous mesh unit; 31, porous mesh unit frame; 32, porous mesh; 33, holes; 40, airflow; 50, overspray; 60, back-blowing equipment; 61, back-blowing airflow; 62 back-blowing exhaust duct; 63, vibration equipment. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] Example

[0052] Reference Figure 1 as well as Figure 2 The present invention discloses an overspray separation device, which includes: an overspray separation module 01 including a housing 10, a baffle separation area 20, and a porous mesh separation area 30. The baffle separation area 20 and the porous mesh separation area 30 are disposed within the housing 10, with the baffle separation area 20 located above the porous mesh separation area 30. An air inlet 11 is disposed at the top of the housing 10, and an air outlet 12 is disposed at the bottom of the housing 10. The airflow 40 is directed from the air inlet 11 to the air outlet 12. The baffle separation area 20 includes a first baffle unit 20.1, a second baffle unit 20.2, and a third baffle unit 20.3. The porous mesh separation area 30 includes a first porous mesh unit 30.1, a second porous mesh unit 30.2, a third porous mesh unit 30.3, and a fourth porous mesh unit 30.4.

[0053] Specifically, the housing 10 has an air inlet 11 and an air outlet 12 , and other external areas are closed wall panels, which can guide the airflow 40 with overspray 50 to pass through the overspray separation module 01 and be purified.

[0054] The airflow 40 carrying overspray 50 enters the overspray separation module 01 from the air inlet 11 on the outer shell 10, and passes through the baffle separation area 20 and the porous mesh separation area 30 successively. A portion of the overspray 50 in the airflow 40 is separated and deposited or adsorbed on the structures within the baffle separation area 20 and the porous mesh separation area 30. The airflow 40 leaves the overspray separation module 01 from the air outlet 12 of the outer shell 10, thereby achieving the purification effect of the airflow 40.

[0055] In an alternative embodiment, referring to Figure 3 as well as Figure 4The baffle separation area 20 includes at least one layer of baffle units, arranged along the direction of airflow 40. The number of baffle units within the baffle separation area 20 can be increased or decreased based on material changes, filtration efficiency requirements, paint capacity requirements, etc. The baffle unit includes a baffle unit frame 21 and baffles 22, which are fixed to the baffle unit frame 21. The baffle unit frame 21 is used to mount and secure the baffles 22, and the baffle unit frame 21 can also be mounted and secured within the housing 10.

[0056] The baffles 22 are further configured as long strips, with multiple baffles 22 arranged in parallel along their lengths, and gaps 23 between them. The baffles 22 are arranged in an array with gaps 23 between them. The gaps 23 between the baffle units in each layer decrease layer by layer in the direction from the air inlet 11 to the air outlet 12. The distance between the baffle units in the lower layer and any structure in the upper layer is greater than the distance between the gaps 23 in the baffle units in the lower layer.

[0057] It is further configured as follows: a limiting groove 14 is provided inside the housing 10 , and the limiting groove 14 is used to place the baffle unit frame 21 .

[0058] In an alternative embodiment, referring to Figure 5 as well as Figure 6 The porous mesh separation area 30 includes at least one layer of porous mesh units, which are arranged along the direction of the airflow 40. The porous mesh unit includes a porous mesh unit frame 31 and a porous mesh 32, and the porous mesh 32 is fixed to the porous mesh unit frame 31. The number of layers of porous mesh units in the porous mesh separation area 30 can be increased or decreased according to changes in materials, requirements for filtration efficiency, requirements for paint holding capacity, etc. The porous mesh unit frame 31 is used to install and fix the porous mesh 32, and the porous mesh unit frame 31 can also be installed and fixed in the housing 10.

[0059] The porous mesh 32 is further configured as a sheet material having a number of holes 33 of a specific size or shape. The number of holes 33 in the porous mesh 32 in each layer of the porous mesh units decreases layer by layer in the direction from the air inlet 11 to the air outlet 12. The distance between the porous mesh units in the lower layer and the porous mesh units or baffle units in the upper layer is greater than the size of the holes 33 in the porous mesh units in the lower layer.

[0060] Figure 7 The direction of travel of the airflow 40 with the overspray 50 as it passes through the baffle separation region 20 and the porous mesh separation region 30 is shown.

[0061] For any two adjacent layers of baffle units, such as the first baffle unit 1 and the second baffle unit, and the second baffle unit and the third baffle unit, the positions of the baffles 22 are staggered along the forward direction of the airflow 40. Most of the airflow 40 needs to change its forward direction when passing through the gap 23 of any layer of baffle units. Since the overspray 50 particles in the airflow 40 have a density greater than that of air, they will continue to maintain their original direction of movement. Therefore, the overspray 50 particles with a certain viscosity will collide with the windward surface of the baffle 22 and then adhere and deposit, thereby playing a role in separation and purification.

[0062] A large number of holes 33 are opened on the porous mesh 32 of the porous mesh unit, and the area of ​​the holes 33 only occupies a part of the area of ​​the porous mesh 32. When the airflow 40 with overspray 50 passes through the porous mesh 32, part of the airflow 40 will directly pass through the holes 33, and part of the airflow 40 needs to avoid the area without holes 33 on the porous mesh 32 and change the direction of advance. The overspray 50 particles in the airflow 40 will continue to maintain the original direction of movement because their density is greater than that of air. Therefore, the overspray 50 particles with a certain viscosity will collide with the area without holes 33 on the windward side of the porous mesh 32 and then adhere and deposit, thereby achieving the effect of separation and purification.

[0063] Figure 8 The diagram shows a state where the airflow 40 carrying the overspray 50 continuously passes through the baffle separation area 20 and the porous mesh separation area 30 and the baffle unit and the porous mesh unit are saturated with the deposited overspray 50 .

[0064] When the airflow 40 passes through the gap 23 between the baffles 22, the deposition distribution of the overspray 50 on the windward side of the baffle 22 increases the closer to the gap 23. As time goes by, the height of the deposited overspray 50 increases and approaches the center surface of the gap 23. Eventually, the overspray 50 on both sides of the gap 23 will come into contact and cause the airflow 40 to be unable to pass through, losing the separation and purification function. The baffle unit reaches a saturated state, and the overspray 50 forms a long strip-shaped deposition state with a height of D1~D3.

[0065] When the airflow 40 passes through the holes 33 on the porous mesh 32, the overspray 50 is deposited on the windward side of the porous mesh 32 more as it approaches the holes 33. As time goes by, the height of the deposited overspray 50 increases and approaches the center of the hole 33. Eventually, the overspray 50 around the hole 33 will contact and cause the airflow 40 to be unable to pass through, losing the separation and purification function. The porous mesh unit reaches a saturated state, and the overspray 50 forms a semicircular deposition state with a height of D4~D7.

[0066] In an optional embodiment, Figure 9The diagram shows an embodiment of an overspray separation module 01 according to the present invention, illustrating the dimensions W1 to W3 of the gaps 23 of each baffle layer, the dimensions W4 to W7 of the holes 33 of each porous mesh layer, and the distances H1 to H7 between each baffle layer and the porous mesh layer. The structure in front of the first baffle layer, such as a chamber, grille, or protective screen in front of the overspray separation module 01, is not shown.

[0067] Through calculation and testing, it is found that the single-layer baffle unit or porous mesh unit has the following technical characteristics:

[0068] 1. The adsorption efficiency of the overspray 50 is inversely proportional to the size (W1 to W7) of the gap 23 or hole 33;

[0069] 2. The saturated adsorption amount of the overspray 50 is proportional to the size (W1-W7) of the gap 23 or the hole 33. The saturated adsorption height (D1-D7) of the overspray 50 is 0.8-1.0 times the size (W1-W7) of the gap 23 or the hole 33.

[0070] In order to achieve the expected overspray 50 adsorption efficiency and overspray 50 saturation adsorption capacity in a limited space, such as 98% adsorption efficiency and >50kg / m 2 To meet the technical indicator of saturated adsorption capacity, it is necessary to use the size of relatively larger gaps 23 or holes 33 (W1~W7) to meet the indicator of saturated adsorption capacity, and the size of relatively smaller gaps 23 or holes 33 (W1~W7) to meet the adsorption efficiency, and the size of gaps 23 or holes 33 (W1~W7) is arranged from large to small.

[0071]

[0072] The table above shows an optional embodiment, with a total of 7 layers of baffles 22, the size of the gaps 23 or holes 33 (W1 to W7) gradually decreasing from 80 mm to 2 mm, the overspray 50 adsorption efficiency gradually increasing from 9.5% to 79.6%, and the saturated adsorption capacity of a single layer of overspray 50 from 22.2 kg / m 2 Gradually reduced to 1.68 kg / m 2 The cumulative overspray 50 adsorption capacity reaches 61.66kg / m 2 , the cumulative overspray 50 adsorption efficiency reaches 98.1%.

[0073] To ensure that each layer of baffles 22 can achieve a saturated adsorption state of the overspray 50, the distance from the previous layer (H1-H7) must be greater than the saturated adsorption height (D1-D7) of the overspray 50. Since the saturated adsorption height (D1-D7) of the overspray 50 is 0.8-1.0 times the size (W1-W7) of the gap 23 or hole 33, the distance from the previous layer (H1-H7) must be greater than the size (W1-W7) of the gap 23 or hole 33.

[0074] In an alternative embodiment, referring to Figure 10 Any side panel of the housing 10 is a movable panel 13. One side panel of the housing 10 is a movable panel 13, which can be opened to expose all the baffle units and porous mesh units inside the overspray separation module 01. Any one or more layers of the baffle units or porous mesh units can be removed for cleaning, repair, or replacement as needed.

[0075] In an optional embodiment, Figure 13 and Figure 14 A second preferred embodiment of the baffle separation region 20 in the overspray separation module 01 is shown. The cross-sectional dimensions of the baffle 22 are circular or elliptical, and the pressure loss of the airflow 40 when passing through the baffle separation region 20 is smaller.

[0076] In an optional embodiment, Figure 15 and Figure 16 A third preferred embodiment of the baffle separation region 20 in the overspray separation module 01 is shown. The cross-sectional dimension of the baffle 22 is U-shaped, and a portion of the overspray 50 can be deposited in the U-shaped opening of the baffle 22 , thereby increasing the saturated adsorption capacity of the overspray 50 .

[0077] In an optional embodiment, Figure 17 and Figure 18 The fourth preferred embodiment of the baffle separation area 20 in the overspray separation module 01 is shown. The cross-sectional dimension of the baffle 22 is V-shaped. A portion of the overspray 50 can be deposited in the V-shaped opening of the baffle 22, thereby increasing the saturation adsorption capacity of the overspray 50. Figure 15 and Figure 16 In the solution, the baffle 22 has a simpler structure and can be realized by bending the plate once.

[0078] In an optional embodiment, Figure 19 and Figure 20 The second preferred embodiment of the porous mesh separation area 30 in the overspray separation module 01 is shown. The cross-sectional size of the porous mesh 32 is wavy. In this way, the area of ​​the porous mesh 32 can be increased, thereby increasing the saturated adsorption capacity of the overspray 50.

[0079] In an optional embodiment, Figure 21 、 Figure 22 and Figure 23 The third preferred embodiment of the porous mesh separation area 30 in the overspray separation module 01 is shown. The shape of the porous mesh unit is cylindrical. This method can increase the area of ​​the porous mesh 32 and improve the saturated adsorption capacity of the overspray 50.

[0080] The various preferred solutions of the baffle separation area 20 and the porous mesh separation area 30 can be combined at will to meet the requirements of different processes and different overspray 50 characteristics.

[0081] In an optional embodiment, the shell 10, baffle unit and porous mesh unit materials are made of thermally stable materials, especially those that can withstand high temperatures above 400°C and will not be severely deformed, melted or corroded after multiple high-temperature treatments. The preferred material is metal material, such as steel, stainless steel or titanium alloy. Considering cost and performance, the preferred material model can be 310S stainless steel, 15CrMo alloy steel or 304 stainless steel.

[0082] In an alternative embodiment, referring to Figure 11 The housing 10 is provided with a limiting groove 14 inside, which is used to place the porous mesh unit frame 31. A technical solution for limiting the placement of the baffle unit and the porous mesh unit in the housing 10. The housing 10 is provided with a limiting groove 14 inside, into which the baffle unit frame 21 of the baffle unit and the porous mesh unit frame 31 of the porous mesh unit can be placed, thereby limiting and fixing the baffle unit and the porous mesh unit.

[0083] In an alternative embodiment, referring to Figure 12 , the baffle units are stacked in sequence, and the porous mesh units are stacked in sequence. Another technical solution is that the baffle units and the porous mesh units are limited and placed in the housing 10. A fixed limit block 15 is provided at one end of the housing 10, and a movable limit block 16 is provided at the other end. The baffle units and the porous mesh units are stacked in sequence, and the baffle unit frame 21 and the porous mesh unit frame 31 contact and limit each other. One end of the baffle unit frame 21 and the porous mesh unit frame 31 contacts the fixed limit block 15, and the other end contacts the movable limit block 16.

[0084] In an optional embodiment, Figure 24 The schematic diagram of a painting installation 02 is shown, which includes a spray booth 03 and an overspray separation device 07 arranged below the spray booth 03 .

[0085] The spraying room 03 is provided with a sprayer 05 for atomizing the coating and spraying it onto the surface of the workpiece 04. The spraying room 03 is provided with a conveying device 06 for conveying the workpiece 04 to a specific location for spraying.

[0086] According to the passing order of the airflow 40 , the overspray separation device 07 includes a guide chamber 08 , at least one overspray separation module 01 and an exhaust chamber 09 .

[0087] A clean airflow 40 is supplied from the top of the spray chamber 03, carrying away overspray 50 particles that have not adhered to the workpiece 04 after spraying by the sprayer 05, and enters the guide chamber 08 of the overspray separation device 07 from the bottom of the spray chamber 03. It is then introduced into the overspray separation module 01 through the guide chamber 08, where a portion of the overspray 50 is separated. The relatively clean airflow 40 is discharged from the overspray separation module 01 into the exhaust chamber 09.

[0088] When the overspray 50 deposited inside the overspray separation module 01 increases to a certain level, it can be replaced with a new overspray separation module 01. After the replaced overspray separation module 01 containing a large amount of overspray 50 is heat-treated, most of the deposited overspray 50 is thermally decomposed.

[0089] In an optional embodiment, Figure 25 The schematic diagram of the back-flushing device 60 is shown. After the overspray separation module 01 is heat-treated, some residues of the overspray 50 formed by the heat treatment will remain inside the overspray separation module 01 and need to be removed using the back-flushing device 60 .

[0090] Backflush equipment 60 includes a backflush exhaust duct connected to the air inlet 11 of overspray separation module 01. Backflush airflow 61 enters through air outlet 12 of overspray separation module 01, picking up and removing residual overspray 50 after heat treatment. Backflush airflow 61 then exits through air inlet 11 of overspray separation module 01 and enters the backflush exhaust duct, thereby cleaning overspray separation module 01. After backflush cleaning, overspray separation module 01 can be re-used in coating equipment 02, achieving multiple reuse.

[0091] The back-flushing airflow 61 can be designed to be in a pulsed form. The instantaneous rapid back-flushing airflow 61 can cause an impact vibration of the internal structure of the overspray separation module 01, so that the residue attached to the internal structure is shaken off.

[0092] A preferred embodiment of the back-flushing device 60 is to add a vibration device 63, which is arranged in close contact with the overspray separation module 01. Preferably, the base of the overspray separation module 01 is placed in the back-flushing device 60. The vibration device 63 can continuously provide impact vibration to shake off the residue attached to the internal structure, which is then carried away by the back-flushing airflow 61.

[0093] In an optional embodiment, a back-blowing device 60 includes a back-blowing exhaust pipe, and the back-blowing device 60 is used to clean the used overspray separation module 01; the used overspray separation module 01 is placed in the back-blowing device 60 after heat treatment, and the back-blowing device 60 drives the air flow 40 to enter from the air outlet 12 and blow out from the air inlet 11, blowing the overspray 50 residue into the back-blowing exhaust pipe.

[0094] The working principle and beneficial effects of the present invention are:

[0095] In terms of separation efficiency, the module adopts a combined structure of a baffle separation area 20 and a porous mesh separation area 30. The staggered arrangement of adjacent layers of baffles 22 extends the airflow 40 path. Combined with the gradient design of gradually decreasing gap 23 / hole 33 size, a graded separation mode of "first intercepting large particles and then capturing small particles" is formed, which greatly improves the comprehensiveness of overspray 50 interception, can not only efficiently capture overspray 50 particles of different sizes, but also avoid the failure of small gaps 23 due to clogging by large particles, significantly improving the separation stability within a single use cycle.

[0096] In terms of maintenance convenience, the movable wall panel 13 is designed with removable baffle units and porous mesh units, so that local components of the module can be quickly replaced or cleaned without disassembling the entire module, reducing maintenance downtime and reducing operation complexity; at the same time, the design of the interlayer structure spacing being larger than the gap / hole size ensures that each layer reaches the saturated adsorption state synchronously. When the module is basically blocked and no airflow 40 passes through, and the overspray separation function is lost and needs to be replaced, a higher overall paint mist adsorption amount can be obtained. Because a certain layer is completely blocked in advance, the module no longer has airflow 40 passing through, and other layers have not yet reached the saturated adsorption state, the overall paint mist adsorption amount is reduced.

[0097] In terms of economy and environmental protection, the reuse of modules is achieved through the cyclic process of "adsorption and deposition-module replacement-heat treatment-backflushing reuse": the replaced modules are heat-treated to remove stubborn residues, and the backflushing equipment 60 cleans the baffle intervals and pore blockages, which can restore the separation performance and greatly reduce the consumption of consumables; combined with the design of individually replaceable units, the cost of unnecessary component replacement is further reduced, which not only improves resource utilization but also meets the needs of green production.

[0098] In summary, through structural optimization and circulation mechanism, the solution achieves the core goals of "easy to replace, long life, and reusability" of the module while ensuring high separation efficiency, taking into account separation performance, maintenance convenience, and economic and environmental protection.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for separating overspray, characterized in that: include: The overspray (50) separation module comprises a housing (10), a baffle separation area (20), and a porous mesh separation area (30), wherein the baffle separation area (20) and the porous mesh separation area (30) are disposed within the housing (10), and the baffle separation area (20) is located above the porous mesh separation area (30); An air inlet (11) is provided at the top of the housing (10), an air outlet (12) is provided at the bottom of the housing (10), and the direction of the air flow (40) is from the air inlet (11) to the air outlet (12).

2. The overspray separation device according to claim 1, characterized in that: include: The baffle separation area (20) includes at least one layer of baffle units, and the baffle units are arranged along the direction of the airflow (40); The baffle unit comprises a baffle unit frame (21) and a baffle (22), wherein the baffle (22) is fixed on the baffle unit frame (21); The baffles (22) are in the shape of long strips, and a plurality of the baffles (22) are arranged in parallel along the length direction. There is a gap (23) between two of the baffles (22), and the gap (23) in each layer of the baffle units decreases layer by layer in the direction from the air inlet (11) to the air outlet (12); The distance between the baffle unit of the lower layer and any structure of the upper layer is greater than the gap (23) distance of the baffle unit of the lower layer.

3. The overspray separation device according to claim 2, characterized in that: include: A limiting groove (14) is provided inside the housing (10), and the limiting groove (14) is used to place the baffle unit frame (21).

4. The overspray separation device according to claim 2, characterized in that: include: The baffle units are stacked in sequence.

5. The overspray separation device according to claim 1, characterized in that: include: The porous mesh separation area (30) comprises at least one layer of porous mesh units, and the porous mesh units are arranged along the direction of the airflow (40).

6. The overspray separation device according to claim 5, characterized in that: include: The porous mesh unit comprises a porous mesh unit frame (31) and a porous mesh (32), wherein the porous mesh (32) is fixed on the porous mesh unit frame (31); The porous mesh (32) is a sheet material having a number of holes (33) of a specific size or shape, and the holes (33) of the porous mesh (32) in each layer of the porous mesh unit decrease layer by layer in a direction from the air inlet (11) to the air outlet (12); The distance between the porous mesh unit of the lower layer and the porous mesh unit or the baffle unit of the upper layer is greater than the size of the holes (33) of the porous mesh unit of the lower layer.

7. The overspray separation device according to claim 6, characterized in that: include: A limiting groove (14) is provided inside the housing (10), and the limiting groove (14) is used to place the porous mesh unit frame (31).

8. The overspray separation device according to claim 6, characterized in that: include: The porous mesh units are stacked in sequence.

9. The overspray separation device according to claim 1, characterized in that: include: Any side wall panel of the housing (10) is a movable wall panel (13).

10. The overspray separation device according to claim 1, characterized in that: include: A backflush device (60), the backflush device (60) comprising a backflush exhaust pipe, the backflush device (60) being used to clean the used overspray (50) separation module; The used overspray (50) separation module is heat-treated and then placed in the back-blowing device (60). The back-blowing device (60) drives the airflow (40) to enter from the air outlet (12) and blow out from the air inlet (11), blowing the overspray (50) residue into the back-blowing exhaust pipe.

Images