A paint mist processor

Abstract

The present application relates to waste gas treatment technical field, specifically to a kind of paint mist processor, paint mist processor includes shell, water film plate, water film forming mechanism and air extraction piece, and inlet is opened in shell;S-shaped structure's airflow ascending channel is formed in the inside of shell;Air extraction piece is used to suction gas in airflow ascending channel from bottom to top;Water film forming mechanism is used to form water film on the convex plate face of water film plate;Water film plate is arranged in the inside of shell, and between inlet and airflow ascending channel, and the bottom of water film plate and shell forms flow-through channel, flow-through channel is connected with inlet and airflow ascending channel, water film plate is wave structure, and extend along vertical direction, and convex plate face is towards inlet.In the process that water moves from top to bottom along the convex plate face of water film plate, under the action of the flow rate of water flow weakened by convex plate face, when water moves to the bottom end of water film plate, the flow rate of water will be slower, ensure that the thickness of water film is thicker, improve the interception and absorption capacity to paint mist.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to a paint mist processor. BACKGROUND

[0002] In the process of paint spraying, only part of the film-forming material can stably adhere to the surface of the sprayed object to form the expected coating; while most of the film-forming material will escape into the air in the form of fine particulate matter, thereby forming paint mist. The presence of paint mist can significantly reduce the visibility of the paint spraying environment, interfere with the precise operation of the operator, and thus adversely affect the quality indicators such as the uniformity and adhesion strength of the product coating; at the same time, the volatile organic compounds (VOCs) contained therein are an important source of air pollution, and if their emission is not effectively controlled, they will cause continuous harm to the regional air quality and even the ecological environment.

[0003] In order to achieve harmless emission of paint mist, relevant treatment equipment is needed; in the related art, for example, Chinese patent CN217774553U discloses a spraying line water spin paint mist capturing device, which separates the inside of the paint spraying room into a relatively independent paint spraying area and a paint mist filtering area by means of a water curtain plate, and constructs an air flow connection between the paint spraying area and the paint mist filtering area by means of a channel provided between the water curtain plate and a backwater pool. The core working principle is that the water flow overflowing from the overflow tank flows along the surface of the water curtain plate from top to bottom to form a continuous water film, and this water film can preliminarily absorb part of the paint mist generated in the paint spraying area; then, under the action of the water mist sprayed by the nozzles in the paint mist filtering area, the residual paint mist not absorbed by the water film is captured again, thereby improving the effect of capturing paint mist.

[0004] However, the above-mentioned spraying line water spin paint mist capturing device also has some problems in the actual process of treating paint mist: since the water flow is formed into a water film by flowing along the surface of the water curtain plate from top to bottom under the action of gravity, the water flow will gradually decrease in volume due to factors such as friction with the surface of the water curtain plate and local splashing during the flow process, so that the thickness of the water film decreases from the upper end to the lower end of the water curtain plate, which causes the water film formed on the lower end of the water curtain plate to be relatively thin, and the interception and absorption capacity of the water film for paint mist is correspondingly weakened. At the same time, the inlet of the paint mist filtering area is arranged below the water curtain plate, and most of the paint mist generated in the paint spraying area needs to enter the paint mist filtering area through the inlet, so that this place becomes the area with the largest amount of paint mist passing through. Under the double effects of insufficient water film thickness and high paint mist concentration, the washing effect of the water film on the lower end of the water curtain plate on the paint mist will be greatly reduced, so that the paint mist not effectively washed will easily adhere to the surface of the lower end of the water curtain plate, and with the passage of time, these adhered paint mist will gradually form solid deposits, which not only further hinder the continuous formation of the water film, but also affect the effect of subsequent paint mist treatment. SUMMARY

[0005] Therefore, it is necessary to provide a paint mist processor to address the problem of poor treatment effect in the current paint mist treatment process.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A paint mist processor, the paint mist processor comprising:

[0008] The housing has an inlet configured to receive paint mist; an airflow rising channel is formed inside the housing, the airflow rising channel has an S-shaped structure and extends vertically.

[0009] A water film plate is disposed inside the housing and located between the inlet and the airflow rising channel. The water film plate has a wave structure and extends vertically with its convex surface facing the inlet. A flow channel is formed between the water film plate and the bottom of the housing, and the flow channel connects the inlet and the airflow rising channel.

[0010] A water film forming mechanism is configured to form a water film on the convex surface of the water film plate;

[0011] An air extraction device is configured to draw gas from the rising airflow channel from bottom to top.

[0012] Furthermore, the water film plate has multiple independently arranged protrusions, the bottom ends of which are hinged to the housing and connected to the housing via elastic elements. Under the action of the elastic elements, the convex surfaces of the protrusions tend to rotate around the hinge point toward the inlet. The top ends of the protrusions bend outwards and form a water storage cavity, which is connected to an external water source. Each water storage cavity has an outlet. The protrusions are made of elastic material and are deformable, having corresponding arcs before and after deformation. The device has two configurations: a linear configuration and a straight configuration. In the arc configuration, the top of the protruding portion stops on the housing or the bottom of the upper protruding portion, and the outlet is closed. In the straight configuration, adjacent protruding portions are parallel and spaced apart, the outlet is open, the water storage chamber is open, and the water in the water storage chamber forms a water film on the convex plate surface of the protruding portion from top to bottom. The housing also has multiple baffles located above the protruding portion and configured to guide the water flow downwards and inwards.

[0013] Furthermore, the baffle plate includes a straight plate section and an arc plate section, wherein the arc plate section is located at the inner end of the straight plate section and is arranged with its concave surface facing downward.

[0014] Further, at least one tensioning rope is arranged on the convex plate surface of each of the convex parts, and the tensioning rope is connected between the top end and the bottom end of the same convex part; when the convex part is in the arc shape, the tensioning rope is bent into an arc shape and is in a tensioning state to tightly close the water storage cavity.

[0015] Further, the water film forming mechanism comprises a backflow groove, an overflow groove and a water pump, the backflow groove is formed at the bottom of the shell and is configured to store circulating water and receive water flowing down from the water film plate; the overflow groove is formed in the shell and is located above the water film plate and is configured to overflow water to the convex plate surface of the water film plate; the water pump is communicated with the backflow groove at the water pumping end and is communicated with the overflow groove at the water discharging end.

[0016] Further, the water storage cavity and the overflow groove are communicated.

[0017] Further, the elastic member is a torsion spring.

[0018] Further, the air suction member is an air suction fan, and the air suction end of the air suction fan is communicated with the top of the airflow upward channel.

[0019] Further, the shell is further provided with a filtering structure, and the filtering structure is located above the airflow upward channel and is configured to filter gas.

[0020] Further, the filtering structure is a filtering grid.

[0021] The present application has the following beneficial effects:

[0022] The present application relates to a paint mist processor, by arranging a water film plate, using the structural characteristics of the wave and the position characteristics of the convex plate surface facing the inlet, in the process of water moving from top to bottom along the convex plate surface of the water film plate, when water flows from the upper side of the wave crest to the lower side, the overall flow rate of the water is slow, thereby increasing the thickness of the overall water film at the wave crest, and further improving the interception and absorption capacity of the paint mist; when the water moves to the wave trough, the wave trough greatly reduces the flow rate of the water, so that the water approximately flows from the upper side of the next wave crest to the lower side in a static state; when the water moves to the bottom end of the water film plate after passing through multiple wave crests and multiple wave troughs, the flow rate of the water is slow, and the thickness of the water film formed on the outer plate surface of the bottom end of the water film plate is thick, which improves the interception and absorption capacity of the paint mist, and avoids the situation that the paint mist which has not been effectively washed adheres to the outer plate surface of the bottom end of the water film plate due to the thin thickness of the water film at this position, thereby ensuring the continuous formation of the water film and avoiding affecting the effect of subsequent paint mist treatment.

[0023] Further, by setting the water film plate with a plurality of independently set protruding parts, and setting the baffle plate matched therewith, by using the deformable characteristics of the protruding parts, when the concentration of the paint mist to be treated is low, the protruding parts are in an arc shape, the plurality of protruding parts jointly form a complete wave structure, ensuring that the thickness of the water film formed on the outer plate surface of the bottom end of the water film plate is thick, improving the interception and absorption capacity of the paint mist; when the concentration of the paint mist to be treated is high, the protruding parts are in a straight line shape, openings are formed between the uppermost protruding part and the shell, and between adjacent protruding parts, the openings can pass through the paint mist, so that the paint mist can be pretreated by the baffle plate, and the pretreated paint mist is subjected to secondary treatment through the airflow ascending channel, which can improve the treatment effect of the paint mist and improve the treatment efficiency of the paint mist. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0025] Figure 2 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure. Figure 1 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0026] Figure 3 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0027] Figure 4 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure. Figure 3 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0028] Figure 5 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure. Figure 4 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0029] Figure 6 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure. Figure 5 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0030] Figure 7 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure. Figure 3 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0031] Figure 8 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure. Figure 7 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0032] Figure 9 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure. Figure 3 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0033] Figure 10 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure. Figure 9 A perspective view of the paint mist processor provided by the embodiment of the present application is shown in the figure.

[0034] Wherein:

[0035] 1, housing; 101, inlet; 102, first baffle; 103, second baffle; 104, deflector; 105, airflow rising channel; 106, overflow tank; 1061, baffle; 107, transfer tank; 108, water receiving tank; 1081, water hole; 109, communication pipe;

[0036] 2, water film plate; 201, convex part; 2011, water storage cavity; 2012, water outlet;

[0037] 3, flow-through channel;

[0038] 401, backflow groove; 402, overflow groove; 403, water pump; 4031, water pipe; 4032, filter plate;

[0039] 5, baffle;

[0040] 6, tensioning rope;

[0041] 7, torsion spring;

[0042] 8, filter grid;

[0043] 9, biological ball;

[0044] 10, shower head. DETAILED DESCRIPTION

[0045] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0046] In this paper, the serial numbers of components, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. In this paper, "connection" and "coupling" include direct and indirect connection (coupling) unless otherwise specified. In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0047] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature is "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0048] The embodiments of the present application will be described below with reference to Figures 1 to 10 The paint mist processor provided by the embodiments of the present application is particularly suitable for treating paint mist, and of course, is also suitable for treating other gases containing solid impurity particles.

[0049] Specifically, the paint mist processor is provided with a shell 1, an inlet 101 is formed on the left side wall of the shell 1, and the inlet 101 is used for receiving paint mist; a first baffle 102 is arranged inside the shell 1, the first baffle 102 is located on the right side of the inlet 101, and the baffle surface is vertically arranged and vertically and fixedly arranged on the front and rear inner side walls of the shell 1 at the front and rear ends respectively; a second baffle 103 is further arranged inside the shell 1, the second baffle 103 is located on the right side of the first baffle 102, and is arranged in parallel with the first baffle 102 with a spacing, the front and rear ends of the second baffle 103 are vertically and fixedly arranged on the front and rear inner side walls of the shell 1 respectively, and the baffle surface of the second baffle 103 is arranged in an inclined manner along the right-up direction; a plurality of guide vanes 104 are fixedly arranged on the right baffle surface of the first baffle 102, the plurality of guide vanes 104 are arranged in a vertical direction with a spacing, the front and rear ends of the guide vanes 104 are vertically and abuttingly or fixedly arranged on the front and rear inner side walls of the shell 1 respectively, and the baffle surface is arranged in an inclined manner along the right-down direction; a plurality of guide vanes 104 are fixedly arranged on the left baffle surface of the second baffle 103, the plurality of guide vanes 104 on the second baffle 103 are arranged in a spaced manner along the inclined direction of the second baffle 103, the front and rear ends of the guide vanes 104 on the second baffle 103 are vertically and abuttingly or fixedly arranged on the front and rear inner side walls of the shell 1 respectively, and the baffle surface is arranged in an inclined manner along the left-up direction, the guide vanes 104 on the first baffle 102 and the guide vanes 104 on the second baffle 103 are arranged alternately to form an S-shaped gas upflow channel 105. The paint mist processor is provided with an air suction member which is configured to be able to suck the gas in the gas upflow channel 105 from bottom to top, so that the gas flow forms an S-shaped flow; the air suction member can be an air blower, and is arranged on the top of the shell 1 during installation, and the air suction end is in communication with the top of the gas upflow channel 105, so as to be able to suck the gas in the gas upflow channel 105 from bottom to top.

[0050] The water film plate 2 is arranged in the shell 1 and located between the inlet 101 and the first baffle 102. The front and rear ends of the water film plate 2 are vertically and fixedly arranged on the inner front and rear side walls of the shell 1 respectively. The water film plate 2 extends in the vertical direction, so as to longitudinally block the transverse paint mist entering from the inlet 101. The water film plate 2 and the bottom of the shell 1 form a flow channel 3. The flow channel 3 is communicated with the inlet 101 and the airflow rising channel 105, so as to guide the paint mist from the inlet 101 into the airflow rising channel 105. The paint mist processor further comprises a water film forming mechanism. The water film forming mechanism is used for forming a water film on the left plate surface of the water film plate 2, so as to absorb the paint mist by the water film. The water film forming mechanism comprises a backflow groove 401, an overflow groove 402 and a water pump 403. The backflow groove 401 is formed in the bottom of the shell 1 and is open at the top. The backflow groove 401 is used for storing circulating water and receiving water flowing down from the water film plate 2. An overflow tank 106 is further arranged in the shell 1. The overflow tank 106 is located directly above the water film plate 2 and has a box structure. The front and rear ends of the overflow tank 106 are vertically and fixedly arranged on the inner front and rear side walls of the shell 1 respectively. The right side wall of the overflow tank 106 is integrally formed with the first baffle 102 and is open at the top. The overflow tank 106 is used for receiving water in the backflow groove 401. The overflow groove 402 is formed in the overflow tank 106. The height of the left side wall of the overflow tank 106 in the vertical direction is lower than that of the right side wall. After the water in the overflow tank 106 is filled, the water can flow out of the left side wall of the overflow tank 106 and flow onto the left plate surface of the water film plate 2, so as to form a water film.

[0051] The water pump 403 is located in the backflow groove 401 and communicated with the backflow groove 401 at the suction end and located at the right side of the second baffle 103. The water pump 403 is communicated with the water pipe 4031 at the drainage end. The water pipe 4031 extends vertically upward first, then horizontally rightward, then vertically upward again, then horizontally leftward again after penetrating through the right side wall of the shell 1, and then vertically upward again until above the second baffle 103. A transfer tank 107 and a water receiving tank 108 are further arranged in the shell 1. The transfer tank 107 is located above the airflow rising channel 105 and has a strip structure. The transfer tank 107 extends in the left and downward direction and is open at the left and right side walls. The right end of the transfer tank 107 is communicated with the upper end of the water pipe 4031. The water receiving tank 108 is located at the left end of the transfer tank 107 and vertically and fixedly arranged on the inner front and rear side walls of the shell 1 respectively. The front and rear side walls and the upper side wall of the water receiving tank 108 are open. The right side wall of the water receiving tank 108 is integrally formed with the left side wall of the first baffle 102. The left end of the transfer tank 107 is communicated with the top of the water receiving tank 108. A plurality of water passing holes 1081 are formed in the bottom of the water receiving tank 108. The plurality of water passing holes 1081 are arranged side by side and spaced apart in the front and rear direction and located directly above the overflow tank 106. The water passing holes 1081 are communicated with the water receiving tank 108 and the overflow tank 106.

[0052] During use, first start the water pump 403, the water pump 403 pumps the water in the backflow tank 401, and then sends it into the overflow tank 402 through the water pipe 4031, the transfer box 107, the water receiving tank 108 and the water passage hole 1081 in turn; when the water in the overflow tank 402 is full, the water will flow out from the left side wall of the overflow tank 402 due to the height of the left side wall being lower than that of the right side wall in the vertical direction, and then form a water film on the left plate surface of the water film plate 2. At the same time, start the air extractor, and the air extractor generates negative pressure at the top of the airflow upward channel 105, and the gas at the bottom of the airflow upward channel 105 flows upward along the airflow upward channel 105 under the action of the pressure difference.

[0053] Then the paint spraying operation is started. The paint mist generated during the paint spraying operation flows from left to right and then enters the inside of the shell 1 through the inlet 101. During the flow of the paint mist in the shell 1, part of the paint mist collides with the water film surface, and the paint mist particles in the paint mist are mixed into the water film and flow downward together with the water flow, and finally enter the backflow tank 401 for collection; another part of the paint mist enters the bottom of the airflow upward channel 105 through the flow channel 3, and in the movement process of this part of the paint mist, part of the paint mist particles are absorbed by the water in the backflow tank 401, and another part of the paint mist particles flow upward along the airflow upward channel 105 together with the airflow, then collide with the lower plate surface of the flow guide plate 104 and separate from the air, and then freely fall to the top of the next layer of flow guide plate 104 under the action of gravity, then move downward along the flow guide plate 104 under the guidance of the flow guide plate 104, repeat the process of free falling and moving downward along the flow guide plate 104, and finally enter the backflow tank 401 for collection.

[0054] In the existing paint mist processor, the water flow depends on gravity to flow along the outer surface of the water film plate 2 from top to bottom to form a water film. In this process, the water flow is continuously attenuated in unit time due to factors such as frictional resistance with the plate surface, local splash loss, etc., which directly causes the water film thickness to decrease in a stepwise manner from the upper end to the lower end of the water film plate 2. This phenomenon is particularly pronounced at the lower end of the water film plate 2, resulting in a significantly thinner water film thickness in this area, which significantly weakens the physical interception and dissolution absorption capacity of the paint mist.

[0055] Meanwhile, the paint mist must be concentrated through the flow channel 3 to enter the airflow rising channel 105, thus forming an area with a highly concentrated paint mist flow. Under the combined effects of insufficient water film thickness (weak interception capacity) and excessively high paint mist concentration (large pollutant load), the washing efficiency of the water film formed on the bottom outer plate of the water film plate 2 for the paint mist drops sharply. A large number of uncaptured paint mist particles directly contact the bottom outer plate of the water film plate 2 due to airflow entrainment. As the operating time accumulates, these attached paint mist particles will gradually solidify to form deposits, which not only destroy the continuity and integrity of the water film, causing subsequent water flow to be unable to form an effective coverage in this area, but also further aggravate the adhesion of paint mist particles due to the adsorption effect of the deposits, forming a vicious cycle of "deposition-failure-more severe deposition", continuously deteriorating the paint mist treatment effect.

[0056] Based on this, in the paint mist processor provided in the embodiment of the present invention, the water film plate 2 is configured to have a wave structure and the convex plate surface faces the inlet 101.

[0057] During use, such as Figure 4 As shown, the paint mist moves in the direction of the arrow in the figure. When the water flows from top to bottom along the convex surface of the water film plate 2, the convex shape of the wave structure creates natural resistance to the water flow as it flows from the upper side of the wave crest to the lower side, slowing down the overall flow rate. During this process, the amount of water flowing through the wave crest area per unit time increases relatively, thus significantly thickening the water film at the wave crest. The thicker water film can expand the contact area with the paint mist, enhancing the physical interception and dissolution absorption effect of the paint mist particles.

[0058] As the water flow moves further to the trough, the concave structure of the trough strongly impedes the flow, significantly reducing the kinetic energy of the water and bringing it to a near-static state. This state provides a buffer for the redistribution of the water flow on the upper side of the next wave peak, ensuring that the water flow can enter the flow cycle of the next wave peak with a stable flow rate and state, avoiding water loss due to excessive flow velocity.

[0059] After multiple peaks and troughs of gradual regulation, the flow velocity of the water reaches the bottom of the water film plate 2 and is effectively controlled and maintained at a low level. At this point, the thickness of the water film formed on the outer surface of the bottom of the water film plate 2 is guaranteed. This not only improves the interception and absorption capacity of paint mist in this area, but more importantly, it avoids the problem of unwashed paint mist particles directly adhering to the plate surface due to an excessively thin water film at the bottom, thus maintaining the continuity of water film formation and ensuring the stability and efficiency of subsequent paint mist treatment processes.

[0060] In further embodiments, in the paint mist treatment process, when the concentration of the treated paint mist is at a high level, the existing paint mist processor only relies on the single channel formed between the water film plate 2 and the bottom of the shell 1 for paint mist transport, which can significantly restrict the paint mist treatment efficiency. Specifically, high-concentration paint mist contains a large amount of fine particulate matter, and the total amount of paint mist that needs to pass through the channel into the subsequent processing link (such as the airflow rising channel 105) per unit time increases significantly. While the cross-sectional area of the single channel is fixed, there is an upper limit to the amount of paint mist flow that it can accommodate, which can cause congestion at the inlet of the channel, and part of the paint mist cannot enter the treatment process in time and can only be retained in the area near the inlet 101.

[0061] The retained high-concentration paint mist can increase the instantaneous contact load with the water film on the surface of the water film plate 2, exceed the absorption and interception capacity of the water film, and cause part of the paint mist to escape without being effectively treated. On the other hand, the retained paint mist can collide and coagulate to form larger particles, which can block the flow channel 3 and further reduce the flow efficiency. At the same time, since the paint mist cannot quickly pass through the single channel into the airflow rising channel 105, the secondary treatment effect of the subsequent S-shaped airflow path on the paint mist cannot be fully exerted, the throughput of the overall treatment process is severely limited, and ultimately the high-concentration paint mist treatment efficiency cannot meet the actual demand.

[0062] Based on this, in the paint mist processor provided in the embodiments of the present application, the water film plate 2 is provided with a plurality of independently arranged protruding portions 201, each protruding portion 201 is an arc-shaped structure, arranged in the vertical direction, and the convex surface is arranged to the left, the bottom end of the protruding portion 201 is hinged to the shell 1, and connected to the shell 1 through an elastic member, under the action of the elastic member, the convex surface of the protruding portion 201 has a tendency to rotate around the hinge point towards the side of the inlet 101; the elastic member can be a torsion spring 7; the top end of the protruding portion 201 is suspended; a blocking strip 1061 is fixedly arranged on the left side wall of the overflow tank 106, the top end of the uppermost protruding portion 201 can abut against the blocking strip 1061 to form a stop cooperation, thereby limiting the maximum angle of rotation of the protruding portion 201 under the action of the torsion spring 7; for other protruding portions 201, the top end can abut against the bottom end of the upper protruding portion 201 to form a stop cooperation, thereby limiting the maximum angle of rotation of the protruding portion 201 under the action of the torsion spring 7. Initially, under the combined action of the torsion spring 7 and the stop cooperation, the plurality of protruding portions 201 collectively form a complete wave structure.

[0063] The convex portion 201 is made of elastic material, such as elastic rubber, silica gel or elastic plastic, etc., and can be deformed, and has corresponding arc shape and straight line shape before and after deformation, when the convex portion 201 is in the arc shape, the top end of the convex portion 201 is stopped on the shell 1 or on the bottom end of the convex portion 201 on the upper side, when the convex portion 201 is in the straight line shape, the adjacent convex portions 201 are parallel and spaced, and the opening is formed between the convex portion 201 on the uppermost side and the shell 1, and between the adjacent convex portions 201, which can pass the paint mist.

[0064] The top end of each convex portion 201 is bent outward by at least 180 degrees, thereby forming a water storage cavity 2011 with itself, the water storage cavity 2011 is communicated with the bottom of the overflow groove 402 through the communication pipe 109, which is convenient for receiving water from the overflow groove 402, and a water outlet 2012 is opened in the middle of the bending portion of the convex portion 201, the water outlet 2012 is communicated with the water storage cavity 2011; when the convex portion 201 is in the arc shape, the water outlet 2012 is blocked by the stop bar 1061 or the bottom end of the convex portion 201 on the upper side, which ensures that the water forming the water film is the overflow water from the overflow groove 402; when the convex portion 201 is in the straight line shape, the water outlet 2012 is opened, and the water in the overflow groove 402 continuously enters the water storage cavity 2011 through the communication pipe 109, under the action of negative pressure suction, the water in the water storage cavity 2011 can flow out through the water outlet 2012 and form a water film on the outer curved surface of the bending portion of the convex portion 201, which ensures the pre-absorption of the paint mist entering from the opening; the water storage cavity 2011 is opened, and the water in it forms a water film on the left plate surface of the convex portion 201 from top to bottom under the action of gravity, which ensures the absorption effect of the paint mist. A plurality of baffles 5 are arranged in the shell 1, the baffles 5 are located above the convex portion 201 and extend in the right and downward direction, so as to guide the paint mist obliquely downward and inward, which is convenient for the separation of air and paint mist particles.

[0065] It should be noted that at this time, the water film formed on the left plate surface of the lowermost convex portion 201 directly comes from the overflow groove 402, and the pipe diameter of the communication pipe 109 can be set to be small, which ensures that the water flowing to the upper side of the wave crest of the lowermost convex portion 201 is in a state of approximate static, and then it can flow from top to bottom under the action of gravity, which ensures that the thickness of the formed water film is thick, thereby improving the interception and absorption capacity of the paint mist, and avoiding the situation that the paint mist which is not effectively washed adheres to the outer plate surface of the water film plate 2 at the bottom end due to the thin thickness of the water film, thereby ensuring the continuous formation of the water film and avoiding affecting the effect of subsequent paint mist treatment.

[0066] During use, when the concentration of paint mist to be treated is low, the power of the air extractor is low, and the negative pressure in the airflow rising channel 105 is small. Under the action of the torsion spring 7, the protruding portions 201 remain stationary and maintain the arc shape. The plurality of protruding portions 201 collectively form a complete wave structure, ensuring that the thickness of the water film formed on the outer plate surface at the bottom end of the water film plate 2 is thick. This improves the interception and absorption capacity of the paint mist while avoiding the situation where the thickness of the water film at this position is too thin, causing paint mist that has not been effectively washed to adhere to the outer plate surface at the bottom end of the water film plate 2. This ensures the continuous formation of the water film and avoids affecting the effectiveness of subsequent paint mist treatment.

[0067] When the concentration of paint mist to be treated is high, the power of the air extractor is high, and the negative pressure in the airflow rising channel 105 is large. Under the action of the pressure difference between the inner and outer sides of the protruding portions 201, the protruding portions 201 are subjected to an inward pushing force. This causes the protruding portions 201 to first change from the arc shape to a straight line shape, and then rotate around their hinge points towards the side closer to the first baffle 102, overcoming the elastic force of the torsion spring 7. This further causes the top end of the uppermost protruding portion 201 and the openings between the other protruding portions 201, except for the uppermost protruding portion 201, and the overflow tank 106 to form openings that allow paint mist to pass through. As shown in FIG. 5, at this time, the paint mist moves in the direction of the arrows in the figure. Figure 7

[0068] For the paint mist that enters between the protruding portions 201 and the first baffle 102 through the openings, it will subsequently move along the airflow to the lower side of the baffle 5. Part of the paint mist particles will impact on the lower plate surface of the flow guide plate 104 and separate from the air, finally entering the backflow tank 401 for collection. Another part of the paint mist particles will follow the airflow from the flow-through channel 3 to the bottom of the airflow rising channel 105. During the movement of this part of the paint mist, part of the paint mist particles will be absorbed by the water in the backflow tank 401, and another part of the paint mist particles will follow the airflow and flow upwards along the airflow rising channel 105. Subsequently, they will impact on the lower plate surface of the flow guide plate 104 and separate from the air. Then, under the action of gravity, they will freely fall to the top of the next layer of flow guide plate 104. Then, under the guidance of the flow guide plate 104 of this layer, they will move downwards along the flow guide plate 104 of this layer. The process of free falling and moving downwards along the flow guide plate 104 is repeated, and finally they enter the backflow tank 401 for collection.

[0069] ​Thus, the openings formed between the uppermost protruding portion 201 and the shell 1 and between adjacent protruding portions 201 serve as new channels, through which the paint mist can enter the inside of the protruding portion 201, thereby optimizing the expansion of the paint mist flow path. Thus, the high-concentration paint mist no longer relies solely on the single flow channel 3 between the water film plate 2 and the bottom of the shell 1. The newly added openings effectively divert part of the paint mist, reducing the flow pressure of the single flow channel 3 and avoiding the stagnation and congestion of the paint mist near the inlet 101. The total amount of paint mist that can be processed per unit time is significantly increased. Moreover, since the pretreatment process at the baffle plate 5 and the treatment process in the airflow rising channel 105 are performed in parallel and sequentially, the coherence and smoothness of the overall treatment process are ensured, thereby significantly improving the treatment efficiency of the paint mist on the basis of improving the treatment effect.

[0070] In further embodiments, to improve the filtering effect of the paint mist, the baffle plate 5 is provided with a straight plate section and an arc plate section. The arc plate section is located at the inner end of the straight plate section and is provided with a concave surface facing downward. In this way, when the paint mist follows the airflow to the bottom of the baffle plate 5, the airflow can form a swirling vortex under the arc-shaped guiding action of the arc plate section. The vortex collides with the airflow rising from the bottom, causing the airflow to slow down and the flow path of the airflow to increase significantly, so that the wet paint mist particles have enough time to separate from the air and fall into the reflux groove 401 below.

[0071] In other embodiments, the deflector plate 104 can also be provided with a straight plate section and an arc plate section. The arc plate section is located at the inner end of the straight plate section and is provided with a concave surface facing downward. The arc plate section has the same effect as the baffle plate 5 and will not be described again.

[0072] In other embodiments, to improve the sealing effect of the water storage cavity 2011 and avoid wasting water resources, at least one tensioning rope 6 is provided on the protruding plate of each protruding portion 201. The tensioning rope 6 is connected between the top end and the bottom end of the same protruding portion 201. When the protruding portion 201 is in an arc shape, the tensioning rope 6 is bent into an arc shape and is in a tensioned state to tightly close the water storage cavity 2011, thereby preventing water in the water storage cavity 2011 from leaking from the gap.

[0073] In an exemplary embodiment, the number of tensioning ropes 6 provided on each protruding portion 201 can be four. The four tensioning ropes 6 on the same protruding portion 201 are arranged in a front-rear direction. When the protruding portion 201 is in an arc shape, the four tensioning ropes 6 are all bent into an arc shape and are all in a tensioned state to simultaneously tightly close the water storage cavity 2011, thereby improving the sealing effect of the water storage cavity 2011.

[0074] In some other embodiments, in order to further improve the filtering effect on the exhaust gas after the paint mist is washed, a filtering structure is arranged in the shell 1, the filtering structure is located above the airflow ascending channel 105 and is configured to filter the gas; the filtering structure can be a filtering grid 8, so that the gas can be filtered through the gaps between the grid pieces.

[0075] In further embodiments, the grid pieces of the filtering grid 8 can be arranged in a V-shaped structure, so that a V-shaped channel is formed between adjacent grid pieces, thereby increasing the resistance of the airflow passing through, so that the paint mist particles contained therein have enough time to separate from the air and fall onto the deflector 104 below, improving the purification effect on the paint mist.

[0076] In some other embodiments, a filter plate 4032 is further arranged in the reflux groove 401, the filter plate 4032 is located at the communication between the reflux groove 401 and the water pump 403, and is used to filter the water entering the water pump 403 from the reflux groove 401, so as to avoid the paint mist particles from being sucked into the water pump 403, which not only damages the internal structure of the water pump 403 and affects the service life of the water pump 403, but also causes ineffective circulation of the paint mist particles and affects the treatment efficiency of the paint mist.

[0077] In some other embodiments, in order to improve the circulation frequency of the circulating water, the number of the transfer boxes 107, the water pumps 403 and the water pipes 4031 are all multiple, and are arranged in the front-rear direction. For example, the number of the transfer boxes 107, the water pumps 403 and the water pipes 4031 can all be two.

[0078] In some other embodiments, in order to improve the purification effect on the paint mist, biological balls 9 are arranged on the top of the filtering grid 8, the biological balls 9 can adsorb the paint mist particles.

[0079] In some other embodiments, in order to improve the purification effect on the paint mist, a plurality of groups of spray heads 10 are arranged on the right side wall of the first baffle 102, the plurality of groups of spray heads 10 are arranged in the vertical direction and are alternately arranged with the deflectors 104, each group includes a plurality of spray heads 10, the plurality of spray heads 10 in the same group are arranged in the front-rear direction and are all used to spray water so as to purify the paint mist.

[0080] The technical features of the above embodiments can be combined in any way, in order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered as the scope of the present application.

[0081] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application.

Claims

1. A paint mist processor characterized by comprising: The paint mist processor comprises: a housing, an inlet is formed on the housing, the inlet is configured to receive paint mist; an airflow upward channel is formed inside the housing, the airflow upward channel is in S-shaped structure and extends along the vertical direction; a water film plate is arranged inside the housing and located between the inlet and the airflow upward channel, the water film plate is in wave structure and extends along the vertical direction, and the convex plate surface faces the inlet; a flow channel is formed between the water film plate and the bottom of the housing, the flow channel communicates the inlet and the airflow upward channel; a water film forming mechanism is configured to form water film on the convex plate surface of the water film plate, and comprises a backflow groove and an overflow groove, the backflow groove is formed on the bottom of the housing and configured to store circulating water and receive water flowing down from the water film plate; the overflow groove is formed in the housing and located above the water film plate, and configured to overflow water to the convex plate surface of the water film plate; a gas suction member is configured to suction gas in the airflow upward channel from bottom to top; the water film plate has a plurality of independently arranged convex portions, the bottom end of the convex portion is hinged on the housing and connected with the housing through an elastic member, under the action of the elastic member, the convex surface of the convex portion has a tendency to rotate towards the side of the inlet around the hinge point; the top end of the convex portion is outwardly bent and forms a water storage cavity with itself, the water storage cavity is communicated with an external water source; a water outlet is formed on each water storage cavity; the convex portion is made of elastic material and can be deformed, and has corresponding arc shape and straight line shape before and after deformation, when in the arc shape, the top end of the convex portion is stopped on the housing or the bottom end of the upper convex portion, and the water outlet is closed; when in the straight line shape, the adjacent convex portions are arranged in parallel and spaced apart, the water outlet is opened, the water storage cavity is opened, and the water in the water storage cavity forms water film on the convex plate surface of the convex portion from top to bottom; a plurality of baffles are arranged in the housing, the baffles are located above the convex portions and are configured to guide water flow downward and inwardly; a first baffle is arranged on the right side of the water film plate, the plate surface of the first baffle is vertically arranged, and the front and rear ends are vertically and fixedly arranged on the front and rear inner side walls of the housing; the lower end of the first baffle is lower than the upper end of the lowermost convex portion.

2. The paint mist handler of claim 1, wherein, the baffle comprises a straight plate segment and an arc plate segment, the arc plate segment is located at the inner end of the straight plate segment and is downwardly arranged with a concave surface.

3. The mist handler of claim 1, wherein, at least one tensioning rope is arranged on the convex plate surface of each convex portion, the tensioning rope is connected between the top end and the bottom end of the same convex portion; when the convex portion is in the arc shape, the tensioning rope is bent into an arc shape and is in a tensioning state to tightly close the water storage cavity.

4. The mist handler of claim 1, wherein, the water film forming mechanism further comprises a water pump, the water suction end of the water pump is communicated with the backflow groove, and the water discharge end is communicated with the overflow groove.

5. The finisher of claim 1 wherein, the water storage cavity is communicated with the overflow groove.

6. The mist handler of claim 1, wherein, the elastic member is a torsion spring.

7. The mist handler of claim 1, wherein, The air extraction member is an air extractor, and the air suction end of the air extractor is communicated with the top of the airflow rising channel.

8. The mist handler of claim 1, wherein, The shell is further provided with a filter structure, which is located above the airflow rising channel and is configured to filter gas.

9. The mist handler of claim 8, wherein, The filter structure is a filter grid.

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