Electrostatic tar trap

Abstract

The utility model discloses a static tar catcher relates to oil fume purification environmental protection equipment technical field, including intercommunication mechanism, capture mechanism, upper box and control distribution box, the intercommunication mechanism contains bottom box, baffle, air inlet pipe and exhaust pipe, the utility model discloses the air inlet cavity and exhaust cavity that the bottom box baffle division cooperated capture pipe form inverted "U" type flue gas flow path, greatly prolongs the residence time of flue gas in the capture pipe, makes flue gas even distribution in multiple capture tubes simultaneously, avoids the problem that traditional equipment partial pipeline is not thorough in purification, partial pipeline is idle, combines the stable electrostatic field of electrode silk generation, can fully adsorb tar, paint mist and other pollutants, adopts simultaneously " lower progress lower " pipeline layout, and all air inlet and exhaust pipes are arranged in the bottom of the equipment, and the top pipeline installation procedure is saved, reduces the risk of construction personnel high altitude operation, avoids rainwater infiltration and causes electrical short circuit, guarantees the long -term stable operation of equipment, reduces the hidden danger of pollutant direct discharge.

Description

Technical Field

[0001] This utility model relates to the technical field of oil fume purification and environmental protection equipment, specifically an electrostatic tar capture device. Background Technology

[0002] In the fields of paint spraying, oil fume and mist environmental protection, traditional electrostatic tar capture devices are the mainstream equipment currently in use. Their core adopts a honeycomb multi-pipe straight discharge structure and treats pollutants through electrostatic adsorption. However, this type of equipment has obvious technical shortcomings in practical applications and is difficult to meet the needs of efficient environmental protection and safe operation and maintenance. Its defects are mainly reflected in three key dimensions: treatment efficiency, installation and operation safety, and maintenance convenience.

[0003] In terms of processing efficiency, the honeycomb multi-pipe direct discharge design of traditional equipment has significant shortcomings. After paint mist and oil fumes enter the chamber, they cannot be evenly distributed between the pipes, resulting in some pipes being overloaded and incompletely purified, while others are underloaded and waste resources. At the same time, in order to control the height of the equipment and ensure basic safety, the direct discharge pipes are designed to be relatively short, which shortens the processing time of pollutants in the pipes and further reduces the purification effect, making it easy to fail to meet emission standards and pollute the environment.

[0004] In terms of installation, operation safety, and maintenance, traditional equipment also presents significant problems. Its bottom-in, top-out layout requires the installation of numerous pipes above the equipment, which not only increases costs but also poses safety hazards due to working at heights. Furthermore, poor pipe sealing can easily lead to rainwater seepage and short circuits in the equipment. In addition, the equipment uses a fully enclosed welded structure to ensure sealing, requiring personnel to crawl inside for maintenance. This not only makes construction difficult due to oil fumes but also poses a risk of suffocation. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an electrostatic tar trap to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electrostatic tar trap, comprising a connecting mechanism, a trapping mechanism, an upper housing, and a control distribution box, wherein the connecting mechanism includes a bottom housing, a partition, an air inlet pipe, and an exhaust pipe; The partition is fixed in the middle of the bottom box, dividing the bottom box into an air inlet chamber and an exhaust chamber. One end of the air inlet pipe is connected to the air inlet chamber, and the other end extends to the outside of the bottom box to receive the flue gas to be purified. One end of the exhaust pipe is connected to the exhaust chamber, and the other end extends to the outside of the bottom box to discharge the purified gas. The capture mechanism is located between the bottom box and the upper box, and includes an installation frame, multiple sets of capture tubes, electrode wires and an energized frame. The installation frame is fixedly connected to the top of the bottom box and the bottom of the upper box respectively. The multiple sets of capture tubes are located inside the installation frame, and some capture tubes are connected to the air intake chamber at the lower end and to the interior of the upper box at the upper end, while other capture tubes are connected to the interior of the upper box at the upper end and to the exhaust chamber at the lower end. Each set of the capture tubes has an electrode wire at its center. The top and bottom of the multiple sets of electrode wires are connected and fixed by an electrified frame. The control distribution box is electrically connected to the electrified frame and is used to supply power to the electrode wires to generate static electricity. The capture tube is a pipe structure, and the inner wall of the capture tube is coated with a corrosion-resistant coating. The electrode wire is made of copper wire or stainless steel wire, and the electrode wire maintains a uniform distance from the inner wall of the capture tube. The connecting mechanism also includes a first inspection door, which is provided in two sets at both ends of the bottom box. The connecting mechanism also includes an oil drain pipe and a support leg; One end of the oil drain pipe is connected to the bottom of the air inlet and exhaust chambers of the base box, and the other end is equipped with a valve to control the oil drain. Multiple sets of the support legs are evenly fixed to the bottom of the base box to support the entire equipment. The top of the upper housing is provided with a detonation port. One side of the detonation port is hinged to the top of the upper housing via a hinge, and the other side is detachably connected to the upper housing via a buckle or bolt. A maintenance frame is fixed to the outer wall of the upper housing. The maintenance frame is set along the height of the upper housing for maintenance personnel to climb and operate. It also includes fire sprinkler systems; The fire sprinkler system includes a water supply pipe and a sprinkler head. One end of the water supply pipe is connected to an external water supply end, and the other end extends into the upper housing. The sprinkler head is fixed to the end of the water supply pipe located inside the upper housing, and the spray direction of the sprinkler head is towards the capture pipe. The control distribution box is equipped with multiple independent control units, each corresponding to a set of electrode wires in the capture tube. It can realize the individual power supply or power cut-off control of the electrode wires in different areas. The control distribution box is equipped with a current and voltage display panel and a fault alarm indicator on its surface. Preferably, the intake pipe and exhaust pipe are arranged side by side on one side of the bottom box, and the two sets of first inspection doors are arranged side by side on the other side of the bottom box, corresponding to the intake pipe and exhaust pipe respectively.

[0007] In summary, the present invention has the following main advantages: 1. This utility model utilizes the air inlet and exhaust chambers divided by the bottom box partition, combined with the capture tubes to form an inverted "U" shaped flue gas flow path, significantly extending the residence time of flue gas in the capture tubes. At the same time, it ensures that the flue gas is evenly distributed in multiple sets of capture tubes, avoiding the problems of some pipes being overloaded and not thoroughly purified, and some pipes being idle in traditional equipment. Combined with the stable electrostatic field generated by the electrode wire, it can fully adsorb pollutants such as tar and paint mist, ensuring that the emitted gas meets environmental protection standards, reducing environmental pollution at the source. In terms of installation and operation safety, it adopts a "bottom inlet and bottom outlet" pipe layout, with all inlet and exhaust pipes located at the bottom of the equipment, eliminating the need for top pipe installation, reducing the risk of high-altitude operations for construction personnel, reducing pipe material costs, and the top is only equipped with a detachable cover plate without complex pipe connections, avoiding rainwater infiltration that could cause electrical short circuits, ensuring long-term stable operation of the equipment, and reducing the risk of direct discharge of pollutants. 2. In terms of maintenance and safety, this utility model is equipped with multiple sets of inspection doors, a flip-out explosion vent, and an inspection frame. During maintenance, personnel can inspect, clean, and replace components without having to crawl into the equipment. The oil drain pipe at the bottom of the base can periodically discharge tar waste liquid, eliminating the risk of suffocation and poisoning in traditional maintenance, improving maintenance efficiency and reducing operation and maintenance costs. At the same time, the added fire sprinkler system can quickly extinguish fires in case of accidental fires, further ensuring the safety of the equipment and the site. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the capture mechanism structure according to Embodiment 1 of this utility model; Figure 3 This is a first-view structural schematic diagram of the communication mechanism according to Embodiment 1 of this utility model; Figure 4 This is a second-view structural schematic diagram of the communication mechanism in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the communication mechanism structure of Embodiment 2 of this utility model.

[0009] In the diagram: 1. Connecting mechanism; 101. Base box; 102. Partition; 103. Air inlet pipe; 104. Exhaust pipe; 105. First inspection door; 107. Oil drain pipe; 108. Support leg; 2. Capturing mechanism; 201. Mounting frame; 202. Capturing tube; 203. Electrode wire; 204. Power supply frame; 3. Upper box; 301. Unloading port; 302. Inspection frame; 4. Control distribution box; 5. Fire sprinkler mechanism. Detailed Implementation

[0010] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0011] The embodiments of this utility model will be described below based on its overall structure.

[0012] Example 1 like Figure 1-4 As shown, the electrostatic tar trap in this embodiment includes a connecting mechanism 1, a trapping mechanism 2, an upper housing 3, a control distribution box 4, and a fire sprinkler mechanism 5. The components work together to achieve the function of flue gas purification. The specific structure is as follows. Connecting Mechanism 1: The core is a rectangular base box 101. A vertically arranged partition 102 is welded and fixed in the middle of the base box 101. The height of the partition 102 is the same as the internal height of the base box 101, dividing the interior of the base box 101 into an air intake chamber and an exhaust chamber of equal volume. The air intake pipe 103 and the exhaust pipe 104 are respectively welded to the bottom of two adjacent side walls of the base box 101, and are symmetrically distributed. One end of the air intake pipe 103 is connected to the interior of the air intake chamber, and the other end extends to the outside of the base box 101 and is welded with a flange for connecting to the external flue gas conveying pipeline. One end of the exhaust pipe 104 is connected to the interior of the exhaust chamber, and the other end also extends to the outside of the base box 101 and is welded with a flange for connecting to the purified gas emission pipeline. Rectangular openings are provided on the side walls of the base box 101 corresponding to the air inlet and exhaust chambers. Two first maintenance doors 105 are detachably connected to the openings by bolts. High-temperature resistant sealing strips are pasted on the inside of the maintenance doors to ensure airtightness when closed. An oil drain pipe 107 is welded to the center of the bottom of the base box 101. The upper end of the oil drain pipe 107 is connected to the bottom of both the air inlet and exhaust chambers, and a manual shut-off valve is installed at the lower end for periodically draining the tar waste liquid collected during equipment operation. Support legs 108 are welded to the four corners of the bottom of the base box 101. The support legs 108 are made of seamless steel pipes and have anti-slip pads welded to the bottom. The overall support height is 30cm to ensure stable placement of the equipment and facilitate bottom operation. Capture Mechanism 2: Located between the base box 101 and the upper box 3, it includes a rectangular mounting frame 201, 60 sets of capture tubes 202, 60 electrode wires 203, and two sets of energized frames 204. The mounting frame 201 is made of stainless steel, galvanized pipe, and carbon steel, and is fixedly connected to the top edge of the base box 101 and the bottom edge of the upper box 3 by bolts. The 60 sets of capture tubes 202 are arranged in a matrix and run through the mounting frame 201. Among them, the lower end of 30 sets of capture tubes 202 is connected to the top of the intake chamber and the upper end extends into the interior of the upper box 3, while the upper end of the other 30 sets of capture tubes 202 is connected to the interior of the upper box 3 and the lower end is connected to the top of the exhaust chamber. The capture tubes 202 are stainless steel pipes with an inner diameter of 219cm, or galvanized pipes and carbon steel pipes. The steel pipes are coated with a PTFE corrosion-resistant coating on the inner wall to prevent tar adhesion and corrosion. Each set of capture tubes 202 has a vertically installed electrode wire 203 at its center. The electrode wire 203 is made of 1mm diameter tungsten wire, which has the characteristics of high temperature resistance and strong conductivity. The top and bottom of the 60 electrode wires 203 are connected and fixed by an electric frame 204. The electric frame 204 is a copper rectangular frame with a nickel-plated surface for rust prevention and is insulated from the capture tubes 202. Similarly, the number of capture tubes 202 can be increased or decreased according to the actual processing volume, which improves the applicability. At the same time, the capture tubes 202 can be arranged in a single U-shape or a combination of double U-shapes to further improve the treatment and purification effect. Upper box 3: A rectangular box matching the size of the bottom box 101. A flip-out explosion vent 301 is provided on the top. One side of the explosion vent 301 is hinged to the top edge of the upper box 3 by a hinge, and the other side is detachably connected to the upper box 3 by a buckle. Sealing strips are also pasted on the inside of the cover plate. A maintenance rack 302 is welded to the outer wall of the upper box 3. The maintenance rack 302 includes a vertical steel pipe support and a horizontal foot bar, which are evenly distributed along the height of the upper box 3. The surface of the foot bar is provided with anti-slip texture to facilitate maintenance personnel to climb to the top for operation. Maintenance ports are provided on both sides of the upper box 3 to allow for maintenance operations inside the upper box 3. Control distribution box 4: There are two sets, which are installed on the support legs 108 on both sides of the base box 101. There are 6 independent control units inside. Each control unit corresponds to 10 sets of electrode wires 203 in the capture tubes 202 and is electrically connected to the power frame 204 through wires. The surface of the control distribution box 4 is equipped with a current and voltage display panel and a fault alarm indicator. It can monitor the working status of the electrode wires 203 in real time. When a short circuit or open circuit occurs in a set of electrode wires 203, the corresponding alarm indicator lights up, which facilitates quick troubleshooting. Fire sprinkler system 5: includes a water supply pipe and 10 sprinkler heads. One end of the water supply pipe is connected to the external fire water supply pipe through a three-way valve, and the other end extends into the upper box 3 and is laid horizontally. The 10 sprinkler heads are evenly installed on the water supply pipe, and the water spray direction is vertically downward toward the top opening of the capture pipe 202 to ensure that the capture system 2 can be fully covered in case of fire.

[0013] Example 2 like Figure 5 As shown, the core structure of this embodiment is the same as that of Embodiment 1, with the main difference being the layout of the pipes and inspection doors in the connecting mechanism 1: The intake pipe 103 and the exhaust pipe 104 are welded side by side to the bottom of the same side wall of the base box 101, with a distance of 50cm between them, and both are connected to external pipes through flanges. On the side wall of the bottom box 101 opposite to the intake pipe 103 and the exhaust pipe 104, two rectangular openings are opened side by side, and two sets of first inspection doors 105 are installed respectively, corresponding one to one with the intake pipe 103 and the exhaust pipe 104, so as to facilitate the inspection of the internal components of the intake chamber and the exhaust chamber from the same side. This embodiment is applicable to scenarios where the external pipeline installation space is limited and the intake and exhaust pipelines need to be centrally arranged, such as a small paint shop. The side-by-side layout can reduce the area occupied by the pipelines on the side wall of the base box 101 and reduce the installation complexity of the external pipelines. At the same time, the first inspection door 105 set on the same side can reduce the movement distance of maintenance personnel and improve the operation and maintenance efficiency. The rest of the working process is completely consistent with the first embodiment, and can also achieve efficient flue gas purification and safety protection functions.

[0014] The working principle of this utility model is as follows: When in use, the flue gas to be purified is transported to the inlet pipe 103 through the pipeline, and then enters the interior of the bottom box 101. A partition 102 is fixed in the middle of the interior of the bottom box 101. The partition 102 divides the interior space of the bottom box 101 into an inlet chamber and an exhaust chamber, which are respectively connected to the inlet pipe 103 and the exhaust pipe 104. When the flue gas enters the intake chamber through the intake pipe 103, the flue gas in the intake chamber rises through the first set of multiple capture pipes 202, flows through the first set of multiple capture pipes 202 to the inside of the upper box 3, then falls through the second set of multiple capture pipes 202, and finally flows into the exhaust chamber inside the bottom box 101. Furthermore, the flue gas in the multiple sets of capture pipes 202 connected to the intake chamber rises, while the flue gas in the multiple sets of capture pipes 202 connected to the exhaust chamber descends. In other words, when the flue gas to be treated enters this device, the flow state of the flue gas is inverted "U" shape, which increases the flow time of the flue gas in the capture pipes 202. Furthermore, each set of capture tubes 202 has an electrode wire 203 at its center. The top and bottom of multiple sets of electrode wires 203 are connected and fixed to each other through an electric frame 204. Then, multiple sets of control distribution boxes 4 supply power to the electrode wires 203, thereby generating static electricity through the electrode wires 203, which can purify and capture the flue gas entering the capture tube 202. In summary, regarding the improvement of pollutant treatment efficiency, this equipment effectively solves the problems of uneven airflow distribution and insufficient treatment time in traditional equipment through its unique flue gas guiding and circulation treatment structure. The partition 102 inside the bottom chamber 101 divides the internal space into an inlet chamber and an exhaust chamber, forming an inverted "U"-shaped flue gas flow path with multiple sets of capture pipes 202. After the purified flue gas enters the inlet chamber through the inlet pipe 103, it first rises to the upper chamber 3 through the first part of the capture pipes 202, and then descends to the exhaust chamber through the second part of the capture pipes 202. The circulating flow design significantly extends the residence time of flue gas in the capture tube 202, while reducing the processing load of a single set of pipes. This makes the flue gas more evenly distributed in each capture tube 202, avoiding the problems of "some pipes being overloaded and not thoroughly purified, while some pipes are idle and wasted" in traditional equipment. In addition, the electrode wire 203 set in the center of the capture tube 202 generates a stable electrostatic field after being energized, which can more fully adsorb pollutants such as tar and paint mist in the flue gas, significantly improving the purification efficiency and ensuring that the emitted gas meets environmental protection standards, thereby reducing environmental pollution at the source. In terms of installation and operation safety, the equipment abandons the traditional "bottom in, top out" layout and adopts a "bottom in, bottom out" pipe design. All air inlet pipes 102 and exhaust pipes 104 are located at the bottom of the equipment, eliminating the need to lay a large number of pipes at the top. This not only saves the process of installing pipes at high altitudes and reduces the safety risks of construction workers working at heights, but also reduces the amount of pipe materials used and saves installation costs. On the other hand, the top of the equipment is only equipped with a flip-up explosion vent 301, without a complex pipe connection structure. This avoids the problem of rainwater seepage caused by poor sealing of the top pipes in traditional equipment, effectively prevents short circuits in electrical components, ensures long-term stable operation of the equipment, and reduces the risk of direct discharge of pollutants due to equipment shutdown. This equipment is equipped with a first maintenance door 105, a second maintenance door 106 and a flip-open explosion relief port 301. During maintenance, the internal capture tube 202, electrode wire 203 and other components can be inspected, cleaned and replaced simply through the first maintenance door 105, the second maintenance door 106 or the maintenance ports on both sides of the upper box 3. Meanwhile, the upper housing 3 is also equipped with a maintenance rack 302 to provide a safe operating platform for maintenance personnel. In addition, the bottom of the bottom housing 101 is equipped with an oil drain pipe 107, which can periodically discharge the tar waste liquid collected during equipment operation to prevent pollutants from accumulating inside the equipment. These designs not only greatly improve maintenance efficiency and reduce operation and maintenance costs, but also completely eliminate the risk of suffocation and poisoning faced by personnel during traditional equipment maintenance, ensuring the safety of maintenance personnel. A fire sprinkler system 5 is also installed on one side of this equipment. One end of the fire sprinkler system 5 is connected to the external water supply, and the other end extends into the upper box 3. In case of an accidental fire, water can be sprayed directly into the upper box 3 through the fire sprinkler system 5 to extinguish the fire. At the same time, the extinguishing water will flow into the bottom box 101 through multiple sets of capture pipes 202, and finally be discharged to the outside through the oil drain pipe 107. A ladder is also installed on one side of the equipment for maintenance by staff.

[0015] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An electrostatic tar catcher comprising a communication mechanism (1), a catching mechanism (2), an upper box (3) and a control distribution box (4), characterized in that: The communication mechanism (1) includes a bottom box (101), a partition (102), an air intake pipe (103) and an exhaust pipe (104). The partition (102) is fixed in the middle of the bottom box (101) to divide the bottom box (101) into an air inlet chamber and an exhaust chamber. One end of the air inlet pipe (103) is connected to the air inlet chamber, and the other end extends to the outside of the bottom box (101) to receive the flue gas to be purified. One end of the exhaust pipe (104) is connected to the exhaust chamber, and the other end extends to the outside of the bottom box (101) to discharge the purified gas. The capture mechanism (2) is located between the bottom box (101) and the upper box (3), and includes a mounting frame (201), multiple sets of capture tubes (202), electrode wires (203) and a power-conducting frame (204). The mounting frame (201) is fixedly connected to the top of the bottom box (101) and the bottom of the upper box (3) respectively. The multiple sets of capture tubes (202) are located inside the mounting frame (201), and some capture tubes (202) have their lower ends connected to the air intake chamber and their upper ends connected to the inside of the upper box (3), while the other part of the capture tubes (202) have their upper ends connected to the inside of the upper box (3) and their lower ends connected to the exhaust chamber. Each of the capture tubes (202) has an electrode wire (203) at its center. The top and bottom of the multiple sets of electrode wires (203) are connected and fixed by an electric frame (204). The control distribution box (4) is electrically connected to the electric frame (204) to supply power to the electrode wires (203) to generate static electricity.

2. The electrostatic tar trap of claim 1, wherein: The communication mechanism (1) also includes a first inspection door (105), and there are two sets of the first inspection doors (105), which are respectively set at both ends of the bottom box (101).

3. The electrostatic tar trap of claim 1, wherein: The connecting mechanism (1) also includes an oil drain pipe (107) and a support leg (108). One end of the oil drain pipe (107) is connected to the bottom of the air inlet and exhaust chambers of the base box (101), and the other end is equipped with a valve to control the oil drain. Multiple sets of the support legs (108) are evenly fixed to the bottom of the base box (101) to support the entire equipment.

4. The electrostatic tar trap of claim 1, wherein: The top of the upper box (3) is provided with a detonation port (301). One side of the detonation port (301) is hinged to the top of the upper box (3) by a hinge, and the other side is detachably connected to the upper box (3) by a buckle or bolt. A maintenance frame (302) is fixed on the outer wall of the upper box (3). The maintenance frame (302) is set along the height direction of the upper box (3) for maintenance personnel to climb and operate.

5. The electrostatic tar trap of claim 1, wherein: It also includes fire sprinkler systems (5); The fire sprinkler system (5) includes a water supply pipe and a sprinkler head. One end of the water supply pipe is connected to an external water supply end, and the other end extends into the upper box (3). The sprinkler head is fixed to one end of the water supply pipe located inside the upper box (3), and the spray direction of the sprinkler head is towards the capture pipe (202).

6. The electrostatic tar trap of claim 1, wherein: The capture tube (202) is a pipe structure, and the inner wall of the capture tube (202) is provided with a corrosion-resistant coating. The electrode wire (203) is made of copper wire or stainless steel wire, and the electrode wire (203) maintains a uniform distance from the inner wall of the capture tube (202).

7. The electrostatic tar trap of claim 1, wherein: The control distribution box (4) is equipped with multiple independent control units. Each control unit corresponds to a set of electrode wires (203) in the capture tube (202). It can realize the individual power supply or power cut-off control of the electrode wires (203) in different areas. The surface of the control distribution box (4) is equipped with a current and voltage display panel and a fault alarm indicator.

8. The electrostatic tar trap of claim 1, wherein: The intake pipe (103) and exhaust pipe (104) are arranged side by side on one side of the bottom box (101), and the two sets of first inspection doors (105) are arranged side by side on the other side of the bottom box (101), corresponding to the intake pipe (103) and exhaust pipe (104) respectively.

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