Paint mist capturing and separating system capable of performing thermal cracking decrement treatment

Abstract

The utility model belongs to the technical field of paint mist treatment in a coating process, and particularly relates to a paint mist capturing and separating system capable of performing thermal cracking decrement treatment, which comprises a treatment box, a thermal cracking furnace, a first fan, a gas pipeline, an air inlet pipe and a cooling box, the second fan is mounted on one side of the treatment box, the exhaust end of the second fan is connected with an exhaust pipe, and purification devices are arranged on the exhaust pipe and the gas conveying pipeline; the capturing mechanism is arranged in the treatment box; the collecting tank is mounted at one end of the gas conveying pipeline; wherein the capturing mechanism comprises a flow guide seat, the flow guide seat is fixedly connected to the inner wall of the treatment box, a capturing part is arranged at the upper end of the treatment box, an opening and closing part is arranged at the lower end of the treatment box, and an oscillation part is further arranged in the treatment box. According to the device, effective capture and reduction treatment of paint mist can be realized, the treatment cost is reduced, and the environmental pollution is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of paint mist treatment in a coating process, and specifically relates to a paint mist capture and separation system capable of thermal decomposition and reduction treatment. Background Art

[0002] Paint mist refers to the mist-like substance formed when paint particles ejected from a spray gun fail to fully adhere to the surface of the object being painted and instead remain suspended in the air as tiny particles. The generation of paint mist is an unavoidable problem during the painting process; it not only pollutes the work environment and affects worker health, but also wastes resources.

[0003] Existing paint mist treatment systems are mainly divided into wet treatment methods and dry treatment methods. The wet treatment method can effectively remove paint mist through purification methods such as water curtain and water curtain, but it is easy to produce wastewater, causing secondary pollution, and affecting the working environment and coating quality. The dry treatment method uses filter cotton nets, high-efficiency filter cotton and other materials for interception. Although there is no wastewater problem, the filter material needs to be replaced frequently and the operating cost is high. In addition, the treatment of paint mist in the existing technology mostly stays at the separation stage, and fails to further reduce the paint mist, which increases the difficulty and cost of subsequent treatment. Utility Model Content

[0004] The purpose of this invention is to provide a paint mist capture and separation system that can be thermally cracked and reduced, which can achieve effective capture and reduction of paint mist, reduce processing costs and reduce environmental pollution.

[0005] The technical solutions adopted in this application are as follows:

[0006] A paint mist capture and separation system capable of thermal cracking and reduction treatment comprises a treatment box and a thermal cracking furnace, a first fan being installed on one side of the thermal cracking furnace, the air intake end of the first fan being in communication with the thermal cracking furnace, the air exhaust end of the first fan being connected to a gas pipeline, and an air inlet pipe being connected to the treatment box;

[0007] A cooling box, the cooling box is fixedly connected to the side of the processing box and is sleeved on the gas pipeline;

[0008] A second fan, the second fan is installed on one side of the processing box, and the air suction end of the second fan is connected to the processing box, the air discharge end of the second fan is connected to an exhaust pipe, and the exhaust pipe and the gas pipeline are both provided with a purification device;

[0009] A capture mechanism is provided inside the processing box and is used to capture fine paint mist particles;

[0010] A collecting tank installed at one end of the gas pipeline;

[0011] Among them, the capture mechanism includes a guide seat, which is fixedly connected to the inner wall of the processing box. The upper end of the processing box is provided with a capture part for capturing fine paint mist particles. The lower end of the processing box is provided with an opening and closing part for controlling the closure of the discharge port. An oscillation part is also provided in the processing box.

[0012] In a preferred embodiment, the capture part includes a high-voltage power supply generator, which is installed on the inner wall of the processing box. The high-voltage power supply generator is provided with evenly distributed discharge electrodes, and a dust collecting plate is also rotatably connected to the interior of the processing box.

[0013] In a preferred embodiment, the opening and closing portion includes an electric push rod, which is installed on one side of the processing box, and a baffle is connected to the telescopic end of the electric push rod.

[0014] In a preferred embodiment, the oscillation part includes a driving motor, which is installed on the top surface of the processing box. The output end of the driving motor is connected to a rotating rod, and a cam is provided on the outer wall of the upper end of the rotating rod. The inner wall of the processing box is fixedly connected to a hollow cylinder, and a resistance rod is inserted into one end of the hollow cylinder. A compression spring is connected between the resistance rod and the hollow cylinder. A support plate is connected to the hollow cylinder, and the other end of the support plate is fixedly connected to the inner wall of the processing box. The lower end of the rotating rod is fixedly connected to a scraper and a crushing rod.

[0015] In a preferred embodiment, the purification device includes a hollow shell, two of which are respectively connected to the gas pipeline and the exhaust pipe, a sealing block is inserted into the upper end of the hollow shell, and an activated carbon adsorption layer and a HEPA filter are connected to the lower end of the sealing block.

[0016] In a preferred embodiment, the upper end of the rotating rod is rotatably connected to the upper end of the processing box through a sealed bearing, and the lower end of the rotating rod is rotatably connected to the bracket inside the processing box. The outer surfaces of the rotating rod and the cam are both covered with insulating rubber sleeves.

[0017] The technical effects achieved by this utility model are:

[0018] The utility model reduces the emission of paint mist and the impact on the environment by electrostatically capturing and thermally cracking the paint mist, while also avoiding the secondary pollution problem that may be caused by the traditional wet treatment method.

[0019] Compared with the traditional dry treatment method, this invention uses thermal cracking technology to achieve paint mist reduction treatment, reducing the difficulty and cost of subsequent treatment. At the same time, the high efficiency of the electrostatic capture device also reduces the frequency of filter material replacement and reduces operating costs;

[0020] The automatic capture, separation, cleaning and reduction treatment mechanism adopted by this utility model simplifies the operation process and improves the automation level and work efficiency of the system. At the same time, the use of the pyrolysis furnace avoids the risk of direct contact with harmful substances and improves the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a front view of the utility model;

[0023] Figure 3 This is a cross-sectional view of the processing box of the utility model;

[0024] Figure 4 For this utility model Figure 3 A partial enlarged schematic diagram of point A in the middle;

[0025] Figure 5 This is a cross-sectional view of the hollow cylinder of the utility model;

[0026] Figure 6 It is a structural diagram of the purification device of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Processing box; 2. Thermal cracking furnace; 3. First fan; 4. Gas pipeline; 5. Cooling box; 6. Second fan; 7. Exhaust pipe; 8. Purification device; 9. Capture mechanism; 10. Collection tank; 11. Air inlet pipe;

[0029] 801, hollow shell; 802, sealing block; 803, HEPA filter; 804, activated carbon adsorption layer;

[0030] 91. guide seat; 92. capture portion; 93. opening and closing portion; 94. oscillating portion;

[0031] 921. High-voltage power supply generator; 922. Discharge electrode; 923. Dust collecting plate;

[0032] 931, electric push rod; 932, baffle;

[0033] 941. Drive motor; 942. Rotating rod; 943. Cam; 944. Hollow cylinder; 945. Scraper; 946. Breaking rod; 947. Resistance rod; 948. Compression spring; 949. Support plate. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in various places in this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Furthermore, this utility is described in detail with reference to schematic diagrams. For ease of explanation, the cross-sectional views of the device structures will be partially enlarged and not to scale when describing the embodiments of this utility. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of this utility. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0038] Please see the attached Figures 1-6 As shown, the present invention provides a paint mist capture and separation system capable of thermal cracking and reduction treatment, comprising a treatment box 1 and a thermal cracking furnace 2, a first fan 3 is installed on one side of the thermal cracking furnace 2, and the air intake end of the first fan 3 is connected to the thermal cracking furnace 2, the air exhaust end of the first fan 3 is connected to the gas pipeline 4, and the treatment box 1 is connected to an air inlet pipe 11;

[0039] The cooling box 5 is fixedly connected to the side of the processing box 1 and is sleeved on the gas pipeline 4;

[0040] The second fan 6 is installed on one side of the processing box 1, and the air suction end of the second fan 6 is connected to the processing box 1. The air discharge end of the second fan 6 is connected to the exhaust pipe 7. The exhaust pipe 7 and the gas pipeline 4 are both provided with a purification device 8;

[0041] The capturing mechanism 9 is provided inside the processing box 1 and is used to capture fine paint mist particles;

[0042] A collecting tank 10 is installed at one end of the gas pipeline 4;

[0043] Among them, the capture mechanism 9 includes a guide seat 91, which is fixedly connected to the inner wall of the processing box 1. A capture part 92 is provided at the upper end of the processing box 1 for capturing fine paint mist particles. An opening and closing part 93 is provided at the lower end of the processing box 1 for controlling the closure of the discharge port. An oscillation part 94 is also provided in the processing box 1.

[0044] Use clean water or coolant to inject into the cooling box 5, and the function of the cooling box 5 is to cool the medium inside. The cooling box 5 uses products currently available on the market. When selecting a model, you should try to choose one that meets the requirements of this application under the premise that the specifications and usage scenarios are suitable. The specific model specifications are not limited here.

[0045] It should be added that the section of the gas transmission pipeline 4 located inside the cooling box 5 is spiral-shaped and adopts a spiral cooling pipeline design to improve the cooling efficiency by increasing the contact area;

[0046] The pyrolysis furnace 2 is equipped with a high-temperature ceramic insulation layer and a heating element (not shown) inside the furnace. The heating element can be an electric heating element. Electric heating elements are commonly used in small cracking furnaces or applications requiring precise temperature control. This heating method generates heat by passing an electric current through a resistive material. The advantage is that it can achieve rapid temperature increase and decrease and can accurately control the temperature. This heating element adopts a product of the existing technology and will not be described in detail here.

[0047] In a preferred embodiment, see Figure 3 The capture part 92 includes a high-voltage power supply generator 921, which is installed on the inner wall of the processing box 1. The high-voltage power supply generator 921 is provided with uniformly distributed discharge electrodes 922, and the interior of the processing box 1 is also rotatably connected with a dust collecting plate 923.

[0048] In this embodiment, the activation of the second blower 6 creates a negative pressure inside the treatment box 1. Paint mist is then drawn into the treatment box 1 through the air inlet pipe 11 and ultimately discharged through the exhaust pipe 7. During this process, the capture mechanism 9 is responsible for intercepting fine paint mist particles. The purification device 8 then removes harmful substances from the gas before discharging it. When exhaust gas containing paint mist particles enters the treatment box 1, it first passes through a high-voltage electric field. This electric field consists of a high-voltage power supply generator 921, a discharge electrode 922 connected thereto, and a grounded dust collecting plate 923. The discharge electrode 922 generates a strong electric field, which ionizes the surrounding air molecules and produces a large number of positive and negative ions. Paint mist particles become charged as they pass through these ions, typically acquiring a negative charge. The charged paint mist particles, under the influence of the electric field, move toward the dust collecting plate 923, which has an opposite charge. Because the electric field force is much greater than the particles' gravity and air resistance, the charged particles can quickly move toward the dust collecting plate 923. When charged paint mist particles contact dust collecting plate 923, they lose their charge and settle on its surface. Over time, paint mist particles gradually accumulate on dust collecting plate 923. A significant advantage of electrostatic capture is its ability to capture extremely fine particles, far exceeding the efficiency of traditional mechanical filtration methods. Furthermore, it significantly reduces air pollution and improves air quality.

[0049] Next, please refer to Figure 3The opening and closing portion 93 includes an electric push rod 931 , which is installed on one side of the processing box 1 , and a baffle 932 is connected to the telescopic end of the electric push rod 931 .

[0050] Secondly, please also refer to Figure 3-Figure 5 The oscillation part 94 includes a driving motor 941, which is installed on the top surface of the processing box 1. The output end of the driving motor 941 is connected to a rotating rod 942, and a cam 943 is sleeved on the outer wall of the upper end of the rotating rod 942. The inner wall of the processing box 1 is fixedly connected with a hollow cylinder 944, and a resistance rod 947 is inserted at one end of the hollow cylinder 944. A compression spring 948 is connected between the resistance rod 947 and the hollow cylinder 944. A support plate 949 is connected to the hollow cylinder 944, and the other end of the support plate 949 is fixedly connected to the inner wall of the processing box 1. The lower end of the rotating rod 942 is fixedly connected with a scraper 945 and a crushing rod 946.

[0051] In this embodiment, after the continuous capture operation, the high-voltage power generator 921 and the second fan 6 are shut down. Subsequently, the electric push rod 931 is controlled to shorten, driving the baffle 932 to move and open the discharge port. At this point, the drive motor 941 is activated, rotating the rotating rod 942. This rotation in turn drives the cam 943, scraper 945, and crushing rod 946 to rotate. When the cam 943 rotates to a specific position, it strikes the dust collecting plate 923. The dust collecting plate 923 then strikes the resistance rod 947, causing the resistance rod 947 to retract into the hollow cylinder 944 and compress the compression spring 948. When the cam 943 no longer contacts the dust collecting plate 923, the restoring force of the compression spring 948 pushes the resistance rod 947 and the dust collecting plate 923 back into place. This process repeats, causing the dust collecting plate 923 to continuously vibrate, thereby removing deposits. The paint mist particles then fall under the action of gravity and enter the pyrolysis furnace 2 along the guide seat 91. Pyrolysis furnace 2 performs high-temperature thermal cracking on the captured paint mist, breaking down the organic components into gas and a small amount of solid residue. This reduces the amount of paint mist and prevents secondary pollution. As paint mist particles pass through guide seat 91, rotating breaker rods 946 break them up, ensuring uniform thermal reaction. Scrapers 945 remove any paint mist particles adhering to the inner wall of guide seat 91, reducing residue.

[0052] After paint mist particles fall into the pyrolysis furnace 2, the electric push rod 931 is controlled to extend, driving the baffle 932 to move and close the feed inlet to reduce heat loss. Next, the first fan 3 is activated to extract the gas generated during the cracking process. The gas flows along the gas pipeline 4 and is cooled by heat exchange as it passes through the cooling box 5. After purification by the purification device 8, the gas is stored in the collection tank 10.

[0053] In a preferred embodiment, see Figure 6The purification device 8 includes a hollow shell 801. The two hollow shells 801 are respectively connected to the gas pipeline 4 and the exhaust pipe 7. The upper end of the hollow shell 801 is plugged with a sealing block 802, and the lower end of the sealing block 802 is connected to an activated carbon adsorption layer 804 and a HEPA filter 803.

[0054] In this embodiment, the purification device 8 comprises an activated carbon adsorption layer 804 and a HEPA filter 803, designed to purify the cracked gas and remove harmful components. Furthermore, an iron block is attached to the sealing block 802, while a magnet is mounted on the hollow shell 801. When the sealing block 802 is inserted into the hollow shell 801, the magnet attracts the iron block, preventing it from loosening. Furthermore, the detachable connection allows for easy removal of the activated carbon adsorption layer 804 and HEPA filter 803 for cleaning.

[0055] Next, please refer to Figure 3 The upper end of the rotating rod 942 is rotatably connected to the upper end of the processing box 1 through a sealed bearing, and the lower end of the rotating rod 942 is rotatably connected to the bracket inside the processing box 1. The outer surfaces of the rotating rod 942 and the cam 943 are both covered with insulating rubber sleeves.

[0056] In this embodiment, the lower end of the rotating rod 942 is rotatably connected to the inner wall of the processing box 1 via a bearing, ensuring that the rotating rod 942 can rotate smoothly without generating friction. The other end is rotatably connected to a bracket inside the processing box 1, providing additional support for the rotating rod 942 and ensuring stable operation of the entire oscillating unit 94.

[0057] The working principle of this utility is:

[0058] Paint mist capture: Under the action of the second fan 6, a negative pressure environment is formed inside the treatment box 1, causing the exhaust gas containing paint mist particles to be drawn into the treatment box 1 through the air inlet pipe 11. The paint mist particles entering the treatment box 1 pass through the electrostatic capture device composed of a high-voltage power generator 921, a discharge electrode 922, and a dust collecting plate 923. The paint mist particles become charged and, under the action of the electric field force, move toward the dust collecting plate 923 and deposit on its surface.

[0059] Paint mist separation: Captured paint mist particles accumulate on dust collecting plate 923. When dust collecting plate 923 needs to be cleaned, high-voltage power generator 921 and second blower 6 are turned off. Electric push rod 931 controls baffle 932 to open the discharge port. Drive motor 941 is activated to rotate cam 943, scraper 945, and breaker bar 946. Cam 943 strikes dust collecting plate 923, causing it to vibrate. Deposited paint mist particles fall under gravity and pass through guide seat 91 into pyrolysis furnace 2.

[0060] Paint mist reduction: Paint mist particles entering the pyrolysis furnace 2 undergo a thermal cracking reaction at high temperatures, breaking down organic components into gas and a small amount of solid residue, thereby achieving paint mist reduction. The gas generated during the pyrolysis process is extracted by the first blower 3 and flows through the gas pipeline 4 into the cooling tank 5 for cooling. It is then purified by the purification device 8 and stored in the collection tank 10.

[0061] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall be implemented in accordance with conventional means in the art unless otherwise specified or limited.

Claims

1. A paint mist capture and separation system capable of thermal decomposition and reduction treatment, characterized by: The invention comprises a processing box (1) and a thermal cracking furnace (2), wherein a first fan (3) is installed on one side of the thermal cracking furnace (2), and an air suction end of the first fan (3) is connected to the thermal cracking furnace (2), an air exhaust end of the first fan (3) is connected to a gas pipeline (4), and an air inlet pipe (11) is connected to the processing box (1); A cooling box (5), the cooling box (5) is fixedly connected to the side of the processing box (1) and is sleeved on the gas pipeline (4); a second fan (6), the second fan (6) being installed on one side of the processing box (1), and the air suction end of the second fan (6) being in communication with the processing box (1), the air discharge end of the second fan (6) being connected to an exhaust pipe (7), and the exhaust pipe (7) and the gas transmission pipeline (4) being both provided with a purification device (8); A capturing mechanism (9), the capturing mechanism (9) being arranged inside the processing box (1) and being used to capture fine paint mist particles; A collecting tank (10), wherein the collecting tank (10) is installed at one end of the gas transmission pipeline (4); The capture mechanism (9) includes a guide seat (91), which is fixedly connected to the inner wall of the processing box (1). The upper end of the processing box (1) is provided with a capture portion (92) for capturing fine paint mist particles. The lower end of the processing box (1) is provided with an opening and closing portion (93) for controlling the closing of the discharge port. The processing box (1) is also provided with an oscillating portion (94).

2. The paint mist capture and separation system capable of thermal decomposition and reduction treatment according to claim 1 is characterized in that: The capture portion (92) includes a high-voltage power supply generator (921), which is installed on the inner wall of the processing box (1). The high-voltage power supply generator (921) is provided with evenly distributed discharge electrodes (922), and a dust collecting plate (923) is rotatably connected to the interior of the processing box (1).

3. The paint mist capture and separation system capable of thermal decomposition and reduction treatment according to claim 1, characterized in that: The opening and closing portion (93) comprises an electric push rod (931), which is installed on one side of the processing box (1), and a baffle (932) is connected to the telescopic end of the electric push rod (931).

4. The paint mist capture and separation system capable of thermal decomposition and reduction treatment according to claim 1 is characterized in that: The oscillating part (94) includes a driving motor (941), which is installed on the top surface of the processing box (1). The output end of the driving motor (941) is connected to a rotating rod (942), and the outer wall of the upper end of the rotating rod (942) is sleeved with a cam (943). The inner wall of the processing box (1) is fixedly connected to a hollow cylinder (944), and one end of the hollow cylinder (944) is plugged with a resistance rod (947). A compression spring (948) is connected between the resistance rod (947) and the hollow cylinder (944). A support plate (949) is connected to the hollow cylinder (944), and the other end of the support plate (949) is fixedly connected to the inner wall of the processing box (1). The lower end of the rotating rod (942) is fixedly connected to a scraper (945) and a crushing rod (946).

5. The paint mist capture and separation system capable of thermal decomposition and reduction treatment according to claim 1 is characterized in that: The purification device (8) comprises a hollow shell (801), wherein two hollow shells (801) are respectively connected to the gas transmission pipeline (4) and the exhaust pipe (7), a sealing block (802) is inserted into the upper end of the hollow shell (801), and an activated carbon adsorption layer (804) and a HEPA filter (803) are connected to the lower end of the sealing block (802).

6. The paint mist capture and separation system capable of thermal decomposition and reduction treatment according to claim 4, characterized in that: The upper end of the rotating rod (942) is rotatably connected to the upper end of the processing box (1) through a sealed bearing, and the lower end of the rotating rod (942) is rotatably connected to a bracket inside the processing box (1). The outer surfaces of the rotating rod (942) and the cam (943) are both covered with insulating rubber sleeves.

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