Filter structure and filter module for separating overspray mist in air flow

Abstract

The present invention discloses a filtering structure for separating oversprayed paint mist in an airflow and a filtering module including the filtering structure. The filtering structure includes a flat filtering material and a support member supporting the filtering material, the support member is composed of two oppositely arranged side plates and a bottom plate connecting the two side plates, the bottom ends of the two side plates are obliquely connected to the opposite ends of the bottom plate and the dihedral angle is an obtuse angle, so that an opening with a wide top and a narrow bottom for receiving the airflow to be filtered is formed between the two side plates; air vents are formed on the two side plates for the airflow to flow through, and the filtering material is arranged on the inner side of the two side plates and the bottom plate in a flat manner; a limiting plate is folded outward from the edge of the air vent, and the bottom end of each limiting plate is plugged into the connecting plate on the outer side of the side plate to maintain a vertical state with the side plate. The filtering structure of the present invention can process and filter oversprayed paint mist, is easy to manufacture, has low cost, low pressure loss and higher filtering efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of filtering devices, and particularly to a filtering structure for separating overspray mist from an air flow mixed with overspray mist generated by spraying, and a filtering module having such a filtering structure. Background Art

[0002] During the spraying process of atomizing paint on a workpiece using a spray gun or an atomizer, a part of the atomized paint mist particles adhere to the target workpiece, and the remaining paint mist particles float into the nearby air and are guided to a treatment device along with the air flow in the spraying chamber. One of the treatment devices is a dry paint mist treatment system with replaceable filtering modules. The air flow containing paint mist is guided and passes through the filtering module, and the filtering module separates and adsorbs most of the paint mist particles. When the filtering module is saturated with adsorption, the saturated module can be taken out and replaced with a new one.

[0003] Designing a filtering module with lower pressure loss, higher filtering efficiency, capable of accommodating more overspray mist, convenient to manufacture and more reasonable in cost is a problem to be solved by those skilled in the art. Summary of the Invention

[0004] An object of the present invention is to provide a filtering structure for separating overspray mist in an air flow, which has lower pressure loss, high filtering efficiency and can accommodate more overspray mist, and a filtering module having such a filtering structure. The filtering structure can be used to separate overspray mist from an air flow mixed with overspray mist generated by spraying, and is convenient to manufacture and reasonable in cost.

[0005] In a first aspect of the present invention, there is provided a filtering structure for separating overspray mist in an air flow, including at least one support member and a flat filtering material fixed on the support member. The support member includes a U-shaped structure and a connecting plate. The U-shaped structure is composed of two oppositely arranged side plates and a bottom plate connecting the two side plates. The bottom ends of the two side plates are obliquely connected to the opposite ends of the bottom plate and the dihedral angle is an obtuse angle, so as to form an upper-wide and lower-narrow opening for receiving the air flow to be filtered between the two side plates. The filtering material is arranged in a flat manner on the inner sides of the two side plates and the bottom plate. At least two ventilation holes are opened on each side plate, and at least two edges of all the ventilation holes are respectively vertically folded outwards to form a limiting plate. The limiting plate is used to limit, support and fix the support member on the outside. The bottom end of each limiting plate is inserted into the connecting plate at the lower part of the outside of the side plate to maintain a vertical state with the side plate.

[0006] Wherein, at least one ventilation hole is opened on the bottom plate.

[0007] Wherein, from a position at a predetermined distance from the top end of the side plate to the bottom plate, a plurality of triangular and / or trapezoidal holes spaced apart from each other in the length direction of the bottom plate are formed by hollowing out each side plate. The side plate material on opposite sides or one side of each hole is vertically folded outward along a predetermined broken line to form a limiting plate. The limiting plate is used to limit, support and fix the support member on the outside. A rectangular ventilation hole is formed between two adjacent limiting plates. The height of the limiting plate is the same as the height of the hole or the ventilation hole.

[0008] Wherein, the lengths of the plurality of rectangular ventilation holes are the same and are the same as the height of the limiting plate, while the widths are the same or different.

[0009] Wherein, the limiting plate is integrally triangular and / or trapezoidal, such as a right triangle or a right trapezoid, etc.

[0010] Wherein, the limiting plate folded out on each side plate is inserted and connected in an opposing manner through the first connecting groove and a second connecting groove corresponding to the upper end of at least one connecting plate located at the lower part outside the side plate; at least two second connecting grooves are formed on each connecting plate; each connecting plate is connected to at least two limiting plates through the second connecting groove.

[0011] Wherein, the materials near both ends of the filter material can be covered on the upper end surface of the side plate, or after being covered on the upper end surface of the side plate, it is folded downward outside the side plate to cover a part of the upper part of the side plate.

[0012] Wherein, the plurality of support members are arranged in a line and can be connected in series through the connection between the left and right adjacent side plates to form an integral support structure. A continuous filter material matching the size of the integral support structure is laid flat on the inner sides of the side plates and the bottom plate of the support members of the integral support structure to form a filter structure combination.

[0013] Wherein, at least two limiting plates corresponding to each other in the folded positions on the left and right adjacent side plates of the filter combination overlap with each other in the front and back and are inserted and connected to a connecting plate to realize sharing of the connecting plate.

[0014] Wherein, the materials near both ends of the flat plate-shaped filter material matching the size of the integral support structure can be covered on the upper end surfaces of the outer side plates of the support members on the outside of the integral support structure, and then folded downward outside the outer side plates of the outer support members to cover a part of the upper part of the side plates, or not covered and directly extend to the top end inside the side plates and stop.

[0015] Wherein, at least two limiting plates corresponding to each other in the folded positions on the left and right adjacent side plates of the filter combination overlap with each other in the front and back and are inserted and connected to a connecting plate to realize sharing of the connecting plate.

[0016] Among them, the support member is made of cardboard, such as corrugated cardboard, and the flat filter material is formed by laying multiple layers of paper with honeycomb-shaped holes to form a certain thickness to form the filter material.

[0017] Among them, a filter sheet made of sheet fiber material can be arranged at the rear end of the flat filter material formed by multiple layers of paper with honeycomb-shaped holes to enhance the filtering effect.

[0018] In the second aspect of the present invention, a filter module is provided, which includes a housing having an air inlet and an air outlet, and at least one filter structure disposed in the housing. The filter structure is disposed on the air flow path between the air inlet and the air outlet and is used to filter the incoming air to be filtered and then discharge it. The filter structure uses the filter structure for separating overspray mist in the air flow. The housing and the filter structure placed in the housing are pressed together to seal between the filter structure and the inner wall of the housing, so that the unfiltered air flows through the filter structure instead of through the gap between the housing and the filter structure. The upper-wide and lower-narrow opening for receiving the air to be filtered between the two side plates is arranged near the air inlet, and the bottom plate is arranged near the air outlet.

[0019] Among them, the air inlet of the housing has a tab for limiting the position of the filter structure. The tab can be bent downward along the bending line into the interior of the housing and extend into the upper-wide and lower-narrow opening of the filter structure to limit the position of the filter structure.

[0020] Among them, the housing can be made of cardboard, such as corrugated cardboard. An opening for the filter structure to enter and exit the housing can be formed on one side of the housing other than the air inlet and the air outlet. In the use state of overspray mist filtration, this opening is sealed and closed by a cover plate.

[0021] The filter structure of the present invention can be used to separate overspray mist from the air flow mixed with overspray mist generated by spraying, and is convenient to manufacture and has a reasonable cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An isometric view of a filter structure assembly according to an exemplary embodiment of the present invention is shown, and the filter structure assembly has three filter structures;

[0023] Figure 2 Shows Figure 1 Another isometric view of the embodiment of

[0024] Figure 3 Shows Figure 1 A side view of the embodiment of

[0025] Figure 4An isometric view of a filter structure assembly unfolded into a sheet according to an exemplary embodiment of the present invention is shown, wherein the filter structure assembly has three filter structures, and no connecting plates are installed and no filter material is laid;

[0026] Figure 5 An isometric view of a filter material according to an exemplary embodiment of the present invention is shown;

[0027] Figure 6 An isometric view of a filter structure assembly unfolded into a sheet according to an exemplary embodiment of the present invention is shown, wherein the filter structure assembly has three filter structures, and no connecting plates are installed;

[0028] Figure 7 Shows Figure 6 A partial isometric view of the folding direction of the limit plate of the embodiment of;

[0029] Figure 8 Shows Figure 6 An isometric view of all the folded states of the limit plates of the embodiment of;

[0030] Figure 9 An isometric view of a filter structure assembly not fully bent into a three-dimensional state according to an exemplary embodiment of the present invention is shown, wherein the filter structure assembly has three filter structures, and no connecting plates are installed;

[0031] Figure 10 An isometric view of a filter structure assembly according to an exemplary embodiment of the present invention is shown, wherein the filter structure assembly has three filter structures, and no connecting plates are installed;

[0032] Figure 11 An isometric view of a connecting plate according to an exemplary embodiment of the present invention is shown;

[0033] Figure 12 A three-dimensional view of a filter structure assembly installed with a connecting plate according to an exemplary embodiment of the present invention is shown, and the filter structure assembly has three filter structures;

[0034] Figure 13 A top view of a filter module according to an exemplary embodiment of the present invention is shown, and the filter module has a filter structure assembly containing three filter structures;

[0035] Figure 14 An isometric view of a filter module according to an exemplary embodiment of the present invention is shown, and the filter module has a filter structure assembly containing three filter structures;

[0036] Figure 15Shows a cross-sectional view of a filtration module according to an exemplary embodiment of the present invention, the filtration module having a filtration structure assembly containing three filtration structures;

[0037] Figure 16 Shows an isometric view of a housing according to an exemplary embodiment of the present invention;

[0038] Figure 17 Shows an isometric view of a filtration module according to an exemplary embodiment of the present invention, wherein a filtration structure assembly containing three filtration structures is being loaded into the housing;

[0039] Figure 18 Shows an isometric view of a filtration module according to an exemplary embodiment of the present invention, wherein the filtration module has a filtration structure assembly containing three filtration structures and the tab at the housing inlet is not bent in place.

[0040] Reference numerals

[0041] 10 Filtration structure

[0042] 11 Support

[0043] 12 U-shaped structure

[0044] 121 Side plate

[0045] 122 First bending line

[0046] 123 Bottom plate

[0047] 124 Edge

[0048] 125 Limiting plate

[0049] 126 First connection groove

[0050] 127 Second bending line

[0051] 13 Vent hole

[0052] 14 Connecting plate

[0053] 141 Second connection groove

[0054] 15 Filter material

[0055] 20 Filtration module

[0056] 21 Housing

[0057] 211 Inlet

[0058] 212 Tab

[0059] 213 Third bending line

[0060] 214 Outlet

[0061] 22 Filter structure assembly

[0062] 30 Unfiltered air flow

[0063] 31 Filtered air flow Detailed implementation manners

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0065] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention 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 to the present invention.

[0066] Figure 1 An isometric view of a filter structure assembly (22) according to an exemplary embodiment of the present invention is shown. The filter structure assembly (22) has three filter structures (10). Figure 2 Shows Figure 1 An isometric view of another angle of the embodiment of Figure 3 Shows Figure 1 A side view of the embodiment of Figure 4 An isometric view of a filter structure assembly (22) unfolded into a sheet according to an exemplary embodiment of the present invention is shown. Among them, the filter structure assembly (22) has three filter structures (10), and the connecting plate (14) is not installed and the filter material (15) is not laid.

[0067] See Figures 1 to 4 , the filter structure (10) for separating overspray mist from the air flow mixed with overspray mist generated by spraying in the embodiment of the present invention includes a support member (11) and a filter material (15) fixed on the support member (11). The body of the support member (11) has a certain degree of rigid strength, which can ensure that the filter material (15) and the support member (11) will not be severely deformed due to the pressure generated by the air flow passing through, resulting in functional failure. Part of the rigid strength comes from the rigid strength of the raw material for making the support member (11) itself, and part comes from the structural characteristics of the support member (11). Specific structural optimization can provide high structural strength for the support member (11).

[0068] Among them, the support member (11) includes a U-shaped structure (12). The U-shaped structure (12) is made of a sheet-like planar material and is bent through two non-intersecting first bending lines (122) in the middle of the material to form a structure with an approximately U-shaped opening that is wider at the top and narrower at the bottom, where three sheet-like structures of side plates (121) - bottom plate (123) - side plates (121) are connected. Two of the side plates (121) and one bottom plate (123) are in the form of quadrilateral sheets, and two non-adjacent sides of the quadrilateral sheet structure of the bottom plate are each connected to one side of the quadrilateral sheet structure of one side plate.

[0069] As an alternative embodiment, the material of the support member (11) can be cardboard material, such as corrugated cardboard. Corrugated cardboard is lightweight, has a certain rigidity, is convenient for processing and has a low cost. After use, the corrugated cardboard can be incinerated together with the adsorbed overspray mist.

[0070] Figure 5 An isometric view of a filter material (15) according to an exemplary embodiment of the present invention is shown. Refer to Figure 5 As shown, the filter material (15) is laid and fixed in the form of a sheet on the three sheet-like structures of the U-shaped structure (12) of the support member (11). The large surface of the sheet-like filter material (15) is attached to the three large inner surfaces of the three sheet-like structures of the U-shaped structure (12) of the support member (11). The filter material (15) is preferably a soft sheet-like structure, which is convenient for laying and fixing on the support member (11).

[0071] As an alternative embodiment, the material of the sheet-like filter material can be paper with honeycomb-shaped pores. By laying multiple layers, the filtration accuracy requirements for different characteristics of overspray mist can be met. Also, a sheet-like fiber material filter sheet can be added at the back end of the multiple layers of honeycomb-shaped pore paper to ensure the filtration effect.

[0072] Among them, the fixing methods of the sheet-like filter material (15) on the three sheet-like structures of the U-shaped structure (12) of the support member (11) include but are not limited to sewing, cementing, extrusion, etc.

[0073] Figure 6 An isometric view of an unfolded sheet-like filter structure assembly (22) according to an exemplary embodiment of the present invention is shown. Among them, the filter structure assembly (22) has three filter structures (10), and the connecting plate (14) is not installed. Refer to Figure 6As shown, ventilation holes (13) are provided on both side plates (121) and a bottom plate (123) of the three sheet-like structures of the U-shaped structure (12) of the support member (11). When the filter material (15) is laid on the three sheet-like structures of the U-shaped structure (12) of the support member (11), air flow can pass through the filter material (15) and the ventilation holes (13) on the sheet-like structures of the U-shaped structure (12) of the support member (11) simultaneously without significant resistance.

[0074] Among them, the opening of the U-shaped structure (12) faces the inflow direction of the unfiltered air flow (30). When observed from the inflow direction of the unfiltered air flow (30), the included angle between the two side plates (121) and the bottom plate (123) is greater than 90 degrees. The three sheet-like structures of the U-shaped structure (12) of the support member (11) form a shape similar to an open letter U or a letter V with a flat bottom, forming an opening structure that is wider at the top and narrower at the bottom. In this way, when the filter structure (10) is placed in a space with the same width as the filter structure (10), air flow can pass through the filter material (15) laid flat on the three planes of the U-shaped structure (12) of the support member (11) simultaneously. Compared with laying the filter material (15) flat completely perpendicular to the air flow direction, the filter area can be effectively enlarged.

[0075] Among them, for any one or two non-adjacent sides (124) of the side plate (121) of the quadrilateral sheet-like structure of the U-shaped structure (12) of the support member (11) of the filter structure (10) connected to the bottom plate (123), they can be connected to the sides (124) in the same position of one or two other filter structures (10). Through this form of connection, multiple filter structures (10) can be connected in series to form a filter structure assembly (22). By connecting the filter structures (10) in series to form a filter structure assembly (22) and adjusting the size of the assembly, the filter material area can be significantly enlarged without changing the cross-sectional area of the air flow.

[0076] Figure 7 Shows Figure 6 Partial isometric view of the folding direction of the limiting plate (125) of the embodiment. Figure 8 Shows Figure 6 Isometric view of the folded state of all the limiting plates (125) of the embodiment.

[0077] See Figure 7 , Figure 8 , as an alternative embodiment, from the middle part of the sheet-like structures of the two side plates (121) of the U-shaped structure (12) of the support member (11), a limiting plate (125) is folded out by cutting, stamping, and bending along the second bending line (127) according to the expected shape. The folding direction is the outer direction of the U-shaped structure (12) of the support member (11), that is, on the side of the filtered air flow (31).

[0078] The function of the above-mentioned limiting plate (125) is to limit and fix the two side plates (121) and the bottom plate (123) of the U-shaped structure (12) of the supporting member (11), and to limit and fix the filter material (15) laid and fixed on the inner sides of the two side plates (121) and the bottom plate (123) by limiting and fixing the supporting member (11), so as to enhance the rigid strength of the filter structure (10).

[0079] When the filter structure (10) is manufactured or assembled and placed in the housing (21) of the filter module (20), the limiting plate (125) on the U-shaped structure (12) of the supporting member (11) can maintain the shape of the filter structure (10), and when bearing the wind pressure brought by the air flow during use, it can ensure that the filter structure (10) does not deform severely and cause functional failure.

[0080] At least two limiting plates (125) should be folded out from each side plate (121) of the U-shaped structure (12) of the supporting member (11). Only by folding out at least two limiting plates (125) can the structural shape of the filter structure (10) be maintained and the rigid strength be enhanced.

[0081] Among them, more than two limiting plates (125) can be folded out on each side plate (121). Theoretically, the increase in the number of limiting plates (125) can continue to improve the rigid strength of the filter structure (10), but when the number of limiting plates (125) increases, the position and shape of the limiting plates (125) should be optimized. Otherwise, too many limiting plates (125) will not only not bring higher rigid strength, but instead increase the complexity of manufacturing and assembling the filter structure (10).

[0082] When designing the processing plan for the sheet-shaped raw material from each side plate (121) of the U-shaped structure (12) of the supporting member (11), the opening of the ventilation holes (13) and the folding of the limiting plates (125) can be designed simultaneously. By optimizing the processing plan, relatively higher ventilation effects and relatively stronger supporting effects can be obtained.

[0083] Figure 11 An isometric view of the connecting plate (14) according to an exemplary embodiment of the present invention is shown. Figure 12 A perspective view of the filter structure assembly (22) having three filter structures (10) and installing the connecting plate (14) according to an exemplary embodiment of the present invention is shown.

[0084] See Figure 11 、 Figure 12As shown, as an optional embodiment, at least one first connection groove (126) is formed at the bottom end of each limiting plate (125). The first connection groove (126) is an elongated hollow structure starting from one side, with one end open and the other end closed. After being inserted into the second connection groove (141) on the connecting plate (14) of the support member (11) in an opposing manner, it can play a role in connection or fixation. The positions of the first connection grooves (126) formed on all the limiting plates (125) folded out from the same side plate (121) of the U-shaped structure (12) of the support member (11) are consistent.

[0085] Among them, all the limiting plates (125) folded out from the same side plate (121) of the U-shaped structure (12) of the support member (11) are connected to at least one connecting plate (14). The connection method is that the first connection groove (126) on the limiting plate (125) is inserted into the second connection groove (141) on the connecting plate (14) in an opposing manner, and the connecting plate (14) is ensured not to break away from the limiting plate (125) through clamping and friction.

[0086] Among them, at least two second connection grooves (141) are formed on each connecting plate (14), and each connecting plate (14) is connected to at least two limiting plates (125) through the second connection grooves (141). After each connecting plate (14) is connected to at least two limiting plates (125), a stable rectangular structure is formed, which can ensure that all the limiting plates (125) connected thereto are stably in the folded-out state, and when the filtering structure (10) bears the wind pressure brought by the airflow, the limiting plates (125) will not fold along the second bending line (127) to cause the support structure to deform and fail.

[0087] In the embodiment of the present invention, after two or more filtering structures (10) are connected in series to form a filtering structure combination (22), the number of limiting plates (125) folded out from the side plates (121) of the U-shaped structures (12) of the two support members (11) connected between every two adjacent filtering structures (10) is the same. After the limiting plates (125) on every two adjacent side plates (121) are folded in place, they correspond to each other one by one and are attached to each other in pairs, and the first connection grooves (126) formed on the limiting plates (125) also overlap each other. The advantage of this is that the two groups of limiting plates (125) folded out from every two adjacent side plates (121) can share one or more connecting plates (14), and the space between every two adjacent side plates (121) is restricted and fixed. After the filtering structure combination (22) is assembled into the housing (21) of the filtering module (20), no additional structure is required to restrict or support the side plates (121).

[0088] Among them, all the limiting plates (125) and the connecting plates (14) of the support member (11) of a single filtering structure (10) or a combination of multiple filtering structures (22) are located on the side of the filtered air flow (31), serving to support and limit the side plates (121) and the bottom plate (123) of the U-shaped structure (12), as well as the filtering material (15) laid and fixed on the side plates (121) and the bottom plate (123).

[0089] Figure 9 An isometric view showing the filtering structure combination (22) according to an exemplary embodiment of the present invention that is not fully bent into a three-dimensional state is presented. Among them, the filtering structure combination (22) has three filtering structures (10), and the connecting plate (14) is not installed. Figure 10 An isometric view showing the filtering structure combination (22) according to an exemplary embodiment of the present invention is presented. Among them, the filtering structure combination (22) has three filtering structures (10), and the connecting plate (14) is not installed;

[0090] As Figure 9 、 Figure 10 shown, as a preferred embodiment, the manufacturing method of the filtering structure combination (22) can be to use a strip-shaped raw material, through cutting and pressing, and then lay and fix a sheet-shaped filtering material (15) on the surface to form the U-shaped structure (12) of the support member (11) of multiple filtering structures (10) and the flat-laying member of the filtering material (15). By bending along the first bending line (122), the second bending line (127), and the connecting edge (124) to form a three-dimensional shape, and then inserting the connecting plate (14) on the limiting plate (125), the filtering structure combination (22) is thus formed.

[0091] Among them, the sheet-shaped filtering material (15) on the filtering structure combination (22) is an integrally continuous flat plate structure, which can be directly laid with a continuous sheet material, reducing the processing difficulty.

[0092] Among them, a single filtering structure (10) or the filtering structure combination (22) can be placed / installed into a housing (21) that can form a filtering module (20) by combining with the single filtering structure (10) or the filtering structure combination (22). Through the structural combination of the filtering structure (10) and the housing (21), it can be ensured that most of the unfiltered air flow (30) with overspray mist passes through the filtering material (15), adsorbing / filtering / intercepting the overspray mist in the air flow, thereby achieving the effect of reducing the content of overspray mist in the filtered air flow (31).

[0093] Figure 13Shows a top view of a filtration module (20) according to an exemplary embodiment of the present invention, the filtration module (20) having a filtration structure assembly (22) containing three filtration structures (10). Figure 14 Shows an isometric view of a filtration module (20) according to an exemplary embodiment of the present invention, the filtration module (20) having a filtration structure assembly (22) containing three filtration structures (10). Figure 15 Shows a cross-sectional view of a filtration module (20) according to an exemplary embodiment of the present invention, the filtration module (20) having a filtration structure assembly (22) containing three filtration structures (10).

[0094] See Figures 13 to 15 As shown, a filtration module (20) for separating overspray from an unfiltered air stream (30) mixed with overspray generated by spraying includes the single filtration structure (10) or a filtration structure assembly (22) composed of a plurality of filtration structures (10) connected together, and a housing (21) that can be used to place / install the single filtration structure (10) or the filtration structure assembly (22).

[0095] Figure 16 Shows an isometric view of a housing (21) according to an exemplary embodiment of the present invention.

[0096] See Figure 16 As shown, the filtration module (20) includes a housing (21), the housing (21) including a peripheral side wall having an inlet (211) opening on a first side of the housing (21) and an outlet (214) opening on a second opposite side of the housing. The inlet (211) opening and the outlet (214) opening provide substantially no resistance to the gas flow along the flow path extending from the inlet (211) opening through the housing to the outlet (214) opening.

[0097] As an alternative embodiment, a preferred material for the housing (21) is corrugated cardboard. Corrugated cardboard is lightweight, has a certain rigidity, is convenient to process and has a low cost, and after use, the corrugated cardboard can be incinerated together with the adsorbed overspray.

[0098] Wherein, after the single filtration structure (10) or the filtration structure assembly (22) is combined with the housing (21) to form the filtration module (20), the unfiltered air stream (30) with overspray generated by spraying is guided to the inlet (211) of the filtration module housing (21) through an exhaust air duct, passes through the filtration module (20) and is discharged from the outlet (214) of the filtration module (20) housing (21), and a part of the overspray in the air stream is separated / adsorbed / filtered / intercepted by the filtration module.

[0099] After the filtering structure (10) or the combination of filtering structures (22) is placed into the housing (21) of the filtering module (20), one or more U-shaped structures (12) of the filtering structure (10) or the combination of filtering structures (22) face the inlet (211) of the housing (21) of the filtering module (20), that is, the inflow direction of the unfiltered air flow (30). The bottom plate (123) of the U-shaped structure (12) of the filtering structure (10) is parallel and adjacent to the outlet (214) side of the housing (21) of the filtering module (20).

[0100] As an alternative embodiment, there are tabs (212) extending from the opening of the inlet (211) of the housing (21) of the filtering module (20), and the tabs (212) can be bent inside the housing (21) of the filtering module (20) through the third bending line (213). After a single filtering structure (10) or the combination of filtering structures (22) of the filtering module (20) is placed into the housing (21) of the filtering module (20), by bending each tab (212) along the third bending line (213) into the interior of the housing (21), it can be folded into the opening of the U-shaped structure (12) of each filtering structure (10) to limit the position of the U-shaped structure (12), ensuring that during the use of the filtering module (20) to separate overspray in the unfiltered air flow (30), the U-shaped structure (12) of each filtering structure (10) will not have a serious change in position due to the wind pressure and the accumulation of paint mist.

[0101] Wherein, the U-shaped structure (12) of each filtering structure (10) corresponds to at least one tab (212), and increasing the number of tabs (212) on each U-shaped structure (12) can increase the position stability of the U-shaped structure (12). When the number of filtering structures (10) in the filtering module (20) increases, the number of tabs (212) also increases accordingly.

[0102] Figure 17 An isometric view of a filtering module (20) according to an exemplary embodiment of the present invention is shown, wherein a combination of filtering structures (22) containing three filtering structures (10) is being loaded into the housing (21). Figure 18 An isometric view of a filtering module (20) according to an exemplary embodiment of the present invention is shown, wherein the filtering module (20) has a combination of filtering structures (22) containing three filtering structures (10), and the tabs (212) at the inlet (211) of the housing (21) are not bent in place.

[0103] See Figure 17 、 Figure 18As shown, in the pre-assembled state, one surface of the housing (21) of the filtration module (20) other than the inlet (211) and the outlet (214) can be made in an open state. A single filtration structure (10) or a combination of multiple filtration structures (22) can be slid into the housing (21) of the filtration module (20) along the opening of this surface, and then this surface is closed. The housing (21) of the filtration module (20) and the single filtration structure (10) or the combination of multiple filtration structures (22) placed inside the housing (21) are pressed together to play a sealing role, which can ensure that most of the unfiltered air flow (30) passes through the filtration structure (10) rather than through the gap between the housing (21) and the filtration structure (10), ensuring that only a small amount of paint mist is contained in the filtered air flow (31).

[0104] As an alternative embodiment, the material of the housing can be cardboard, preferably corrugated cardboard. Corrugated cardboard is light in weight, has a certain rigidity, is convenient for processing and has a low cost, and after use, the corrugated cardboard can be incinerated together with the adsorbed overspray paint mist.

[0105] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms;

[0106] Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0107] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A filter structure for separating overspray paint mist in an airflow, comprising at least one support member and a flat filter material fixed to the support member, the support member comprising a U-shaped structure and a connecting plate, the U-shaped structure consisting of two oppositely arranged side plates and a bottom plate connecting the two side plates, the bottom ends of the two side plates being obliquely connected to the opposite ends of the bottom plate and having an obtuse dihedral angle, so that an opening that is wide at the top and narrow at the bottom for receiving the airflow to be filtered is formed between the two side plates; the filter material is arranged on the inner sides of the two side plates and the bottom plate in a flat manner; each of the side plates is provided with at least two air holes, and a limiting plate is folded out vertically outward on at least two sides of all the air holes, the limiting plate is used to limit, support and fix the support member on the outside, and each of the limiting plates The bottom end is plugged into the connecting plate at the lower outer side of the side panel to maintain a vertical state with the side panel; at least one first connecting groove is opened at the bottom end of each limiting plate, and the limiting plate folded out of each side panel is inserted and connected with the second connecting groove corresponding to the upper end of at least one connecting plate located at the lower outer side of the side panel through the first connecting groove; each connecting plate has at least two second connecting grooves; each connecting plate is connected to at least two limiting plates through the second connecting groove; at least two of the supporting members can be connected in series through the left and right adjacent side panels after being arranged in a line to form an integral supporting structure, and the front and back faces of at least two limiting plates corresponding to the folded positions on the left and right adjacent side panels overlap with each other and are plugged and connected with one of the connecting plates to realize a common connecting plate.

2. The filtering structure for separating overspray mist in an airflow according to claim 1, characterized in that: At least one air hole is formed on the bottom plate.

3. The filtering structure for separating overspray mist in an airflow according to claim 1, characterized in that: The limiting plate is in a triangular shape or a trapezoidal shape as a whole.

4. The filtering structure for separating overspray mist in an airflow according to claim 1, characterized in that: A plurality of the support members are arranged in a line and connected in series through adjacent left and right side plates to form an integral support structure, and continuous filter material matching the size of the integral support structure is laid flat on the inner sides of the side plates and bottom plates of the support members of the integral support structure to form a filter structure assembly.

5. The filtering structure for separating overspray mist in an airflow according to claim 4, characterized in that: At least two of the limit plates corresponding to the folded positions on the left and right adjacent side plates of the filter assembly overlap with each other and are plug-connected with one of the connecting plates to realize a common connecting plate.

6. The filtering structure for separating overspray mist in an airflow according to claim 1, characterized in that: The support member is made of cardboard, and the flat plate-shaped filter material is formed by laying multiple layers of paper with honeycomb holes to a certain thickness.

7. The filtering structure for separating overspray mist in an airflow according to claim 6, characterized in that: A filter sheet made of sheet-like fiber material is provided at the rear end of a flat plate-like filter material formed of multiple layers of paper having honeycomb-like holes.

8. A filter module for separating overspray paint mist from an airflow, comprising a housing having an airflow inlet and an airflow outlet and at least one filter structure disposed in the housing, wherein the filter structure is disposed on an airflow path between the airflow inlet and the airflow outlet, and is used to filter the incoming airflow to be filtered and then discharge it, characterized in that: The filtering structure adopts the filtering structure for separating overspray mist in the airflow as described in any one of claims 1 to 7, and the outer shell and the filtering structure placed in the outer shell are pressed together to achieve a sealing effect between the filtering structure and the inner wall of the outer shell, so that the unfiltered airflow passes through the filtering structure instead of the gap between the outer shell and the filtering structure, and the opening between the two side plates that is wide at the top and narrow at the bottom for receiving the airflow to be filtered is arranged near the airflow inlet, and the bottom plate is arranged near the airflow outlet.

9. The filter module for separating overspray mist in an airflow according to claim 8, characterized in that: The air flow inlet of the shell has a protrusion for limiting the position of the filter structure. The protrusion can be bent downward to the inside of the shell through a bending line and extend into the opening of the filter structure which is wider at the top and narrower at the bottom to limit the position of the filter structure.

10. The filter module for separating overspray mist in an airflow according to claim 9, characterized in that: The shell is made of cardboard, and an opening for the filter structure to enter and exit the shell is formed on one side. The opening is sealed by a cover plate in a use state.

Images