A non-woven fabric oil fume purification system

Abstract

The application relates to a non-woven fabric oil fume purification system, belonging to the field of non-woven fabric production. The non-woven fabric oil fume purification system comprises, in sequence along the oil fume flowing direction, gas-liquid separation treatment, spraying treatment, electrostatic adsorption treatment, multi-stage filtration treatment and activated carbon adsorption treatment. The gas-liquid separation treatment and the spraying treatment remove large-particle smoke dust in the oil fume, thereby reducing the pressure of the electrostatic adsorption. Meanwhile, the spraying treatment performs cooling treatment on the flue gas, so that the temperature of the flue gas itself does not easily affect the effect of the electrostatic adsorption treatment. The multi-stage filtration treatment further filters the flue gas. The activated carbon adsorption simultaneously further adsorbs the flue gas and adsorbs peculiar smell in the flue gas, so as to further improve the non-woven fabric oil fume purification effect. The system realizes the purpose of improving the oil fume purification effect.

Description

Technical Field

[0001] This application relates to the field of nonwoven fabric production, and in particular to a nonwoven fabric fume purification system. Background Technology

[0002] Nonwoven fabrics are mostly made from polypropylene granules, produced through processes such as high-temperature melting, spinning, web formation, and hot-pressing. They have a wide range of applications. However, during the production of nonwoven fabrics, because the raw materials need to undergo high-temperature melting and other steps, some organic substances will volatilize, generating a large amount of oil fumes.

[0003] Currently, the purification method for non-woven fabric oil fume often uses water spraying. The traditional water spraying method involves countercurrent contact between oil fume exhaust gas and spray water, with gas-liquid contact occurring on the surface of the packing material inside the tower. The temperature of the oil fume exhaust gas is reduced, causing some of the oil fume to condense into liquid and enter the water, while some oil fume is directly entrained and carried into the water after contact with the water.

[0004] In the process of using the above-mentioned related technologies, the inventors discovered that due to the poor hydrophilicity of the oil fume substances generated in the production of non-woven fabrics, the amount of oil fume particles captured by water is relatively small, resulting in poor oil fume purification effect. Summary of the Invention

[0005] To improve the oil fume purification effect of non-woven fabric, this application provides a non-woven fabric oil fume purification system.

[0006] This application provides a non-woven fabric oil fume purification system, which relates to the following technical solution:

[0007] A non-woven fabric oil fume purification system includes gas-liquid separation treatment, spray treatment, electrostatic adsorption treatment, multi-stage filtration treatment and activated carbon adsorption treatment arranged sequentially along the oil fume flow direction.

[0008] By adopting the above technical solutions, gas-liquid separation and spraying processes remove large particles of smoke and dust from the fumes, thereby reducing the pressure on electrostatic adsorption. Simultaneously, the spraying process cools the flue gas, ensuring that the flue gas temperature itself does not significantly affect the electrostatic adsorption effect. Multi-stage filtration further filters the flue gas, while activated carbon adsorption further adsorbs odors from the flue gas, further improving the non-woven fabric's fume purification effect. The system of this application achieves the goal of improving the fume purification effect.

[0009] Optionally, the electrostatic adsorption treatment employs an electrostatic oil fume purification device. The electrostatic oil fume purification device includes a housing and a cleaning mechanism connected to the housing. The cleaning mechanism includes a heating air duct and a fan. The heating air duct has multiple air outlets. One end of the heating air duct is connected to an air source, and the other end is connected to the housing. The fan is connected to the heating air duct to allow hot air from the air source to flow into the housing. The bottom of the housing has an opening.

[0010] By adopting the above technical solution, after the electrostatic oil fume purification device has been running for a period of time, the staff can turn on the fan and valve to allow hot air to enter the box through the heated air duct, thereby heating the grease adhering to the inner wall of the box, melting it and allowing it to flow into the opening of the box for discharge.

[0011] Optionally, the cleaning mechanism further includes a frame and multiple scraper blades. The frame is fixedly connected to the housing. The multiple scraper blades are telescopic plates. The multiple scraper blades are arranged around the circumference of the housing, and each scraper blade abuts against the bottom wall of the housing. The scraper blades move in a direction close to or away from the bottom opening of the housing. The frame is provided with a drive mechanism for driving the scraper blades to move.

[0012] By adopting the above technical solution, the setting of the oil scraper enables the drive mechanism to drive the oil scraper to move in order to scrape the oil from the bottom of the box, thereby making it less likely for too much grease to accumulate at the bottom of the box.

[0013] Optionally, the drive mechanism includes a drive assembly and a transmission assembly. The drive assembly includes a drive motor, a drive screw, and a drive frame. The drive motor is fixedly connected to the frame. The drive screw is coaxially fixedly connected to the output shaft of the drive motor. The drive frame is threadedly connected to the drive screw. The transmission assembly connects the drive frame and the oil scraper to drive the oil scraper to move.

[0014] By adopting the above technical solution, the staff starts the drive motor, which drives the drive screw to rotate and causes the drive frame to move towards or away from the bottom of the box, thereby driving the transmission component to move the oil scraper.

[0015] Optionally, a support frame is fixedly connected to the inner wall of the box, and a sliding plate is fixedly connected to the support frame. The oil scraper is slidably connected to the sliding plate. The transmission assembly includes a transmission rod, a support rod, and a moving rod. One end of the transmission rod is rotatably connected to the drive frame, and the other end is rotatably connected to one end of the support rod and the moving rod. The other end of the support rod is rotatably connected to the support frame, and the other end of the moving rod is rotatably connected to the oil scraper.

[0016] By adopting the above technical solution, the staff starts the drive motor, which drives the drive screw to rotate, causing the drive frame to move towards or away from the bottom of the box. This causes the drive frame to drive the transmission rod, which in turn causes the support rod and the moving rod to rotate, and the moving rod to push the scraper plate to move.

[0017] Optionally, the scraper plate has a groove for the sliding plate to pass through. The size of the groove is larger than the size of the sliding plate in the direction perpendicular to the bottom of the box. The sliding plate has a sliding groove along its length. A roller is rotatably connected to the scraper plate.

[0018] By adopting the above technical solution, the groove enables the sliding connection between the scraper and the sliding plate. The groove increases the contact area between the sliding plate and the scraper, improving the moving stability of the scraper. The roller reduces the resistance encountered by the scraper when it moves.

[0019] Optionally, two rollers are provided. Along the direction near the bottom of the box, the two rollers are the first roller and the second roller. The first roller abuts against the side wall of the sliding groove near the bottom of the box, and the second roller abuts against the side wall of the sliding groove away from the bottom of the box. The connection position of the moving rod and the oil scraper is located on the side of the sliding plate near the bottom of the box.

[0020] By adopting the above technical solution, when the drive assembly drives the scraper to move away from the bottom opening of the housing, the transmission rod drives the moving rod to pull the scraper. At this time, the scraper rotates around the second rotating shaft as the axis of rotation away from the bottom opening of the housing, thereby releasing the contact between the bottom of the scraper and the side wall of the housing, and making it difficult for the scraper to scrape the grease away from the opening when it moves.

[0021] Optionally, the scraper blade includes a fixed sub-plate and two movable sub-plates. The two movable sub-plates are respectively located on both sides of the fixed sub-plate and are slidably connected to the fixed sub-plate. The fixed sub-plate has a sliding groove with both ends open. The two movable sub-plates are slidably connected to the sliding groove in a direction that is closer to or further away from each other.

[0022] By adopting the above technical solution, the sliding connection between the moving subplate and the fixed subplate allows the scraper to extend and retract, thus making it less likely for the scraper to get stuck on the inner wall of the box when scraping grease.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Gas-liquid separation and spraying processes remove large particles of smoke and dust from the fumes, thus reducing the pressure on electrostatic adsorption. Simultaneously, spraying cools the fumes, ensuring that the temperature of the fumes themselves does not significantly affect the effectiveness of electrostatic adsorption. Multi-stage filtration further filters the fumes. Activated carbon adsorption further adsorbs odors from the fumes, further improving the oil fume purification effect of the non-woven fabric. The system in this application achieves the goal of improving the oil fume purification effect.

[0025] 2. The heating duct facilitates the heating of the inside of the electrostatic oil fume purification device by the staff, thereby melting the grease on the inner wall of the chamber and allowing it to flow out of the chamber. Attached Figure Description

[0026] Figure 1 This is a system diagram of this application;

[0027] Figure 2 This is a schematic diagram showing the overall connection of the various devices in the system of this application;

[0028] Figure 3 This is a partial cross-sectional view of the electrostatic oil fume purification device in the embodiments of this application;

[0029] Figure 4 This is an enlarged schematic diagram of the heating air duct in an embodiment of this application;

[0030] Figure 5 This is a partial schematic diagram of the cleaning mechanism in an embodiment of this application;

[0031] Figure 6 This is a partial cross-sectional view of the scraper blade in this application;

[0032] Figure 7 yes Figure 5 An enlarged schematic diagram of part A in the middle.

[0033] Explanation of reference numerals in the attached drawings: 100, housing; 110, support frame; 200, cleaning mechanism; 210, frame; 220, scraper blade; 221, fixed sub-plate; 222, movable sub-plate; 224, first roller; 225, second roller; 226, support groove; 227, connecting spring; 228, support block; 230, heating air duct; 231, air outlet; 300, drive mechanism; 400, drive assembly; 410, drive motor; 420, drive screw; 430, drive frame; 500, transmission assembly; 510, transmission rod; 520, support rod; 530, movable rod; 600, sliding plate; 610, sliding groove. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0035] This application discloses a non-woven fabric oil fume purification system.

[0036] Reference Figure 1 The non-woven fabric fume purification system includes gas-liquid separation treatment, spray treatment, electrostatic adsorption treatment, multi-stage filtration treatment and activated carbon adsorption treatment arranged in sequence.

[0037] Reference Figure 2 The process involves several steps: gas-liquid separation and spraying are performed using a pneumatic cyclone tower; electrostatic adsorption is achieved using an electrostatic fume purification device; multi-stage filtration utilizes a high-efficiency filter; and activated carbon adsorption is achieved using an activated carbon adsorption-desorption catalytic combustion device. Adjacent devices are connected by pipes equipped with valves to control the amount of oil fume within the pipes. Specifically, the oil fume purification process in this embodiment is as follows: the oil fume first undergoes gas-liquid separation and spraying in the pneumatic cyclone tower; after treatment in the pneumatic cyclone tower, it enters the electrostatic fume purification device for electrostatic adsorption; after treatment in the electrostatic fume purification device, it enters the high-efficiency filter for multi-stage filtration; after treatment in the high-efficiency filter, it enters the activated carbon adsorption-desorption catalytic combustion device for activated carbon adsorption; and finally, after passing inspection, it is released into the atmosphere.

[0038] The system includes two electrostatic oil fume purification devices connected in parallel, allowing staff to turn on the other device while cleaning one, thus minimizing disruption to the oil fume treatment process.

[0039] Reference Figure 3 and Figure 4 Based on the nonwoven fabric purification system, this application also proposes an electrostatic oil fume purification device, which includes a box 100 with an opening at the bottom.

[0040] After the electrostatic precipitator has been running for a period of time, some of the settled grease will concentrate on the inner wall of the electrostatic precipitator. When the temperature drops, the grease will condense on the inner wall of the electrostatic precipitator. The condensed grease will affect the purification effect of the electrostatic precipitator on the one hand, and on the other hand, when the temperature rises, the grease will pose a fire risk. In order to remove the grease on the inner wall of the electrostatic precipitator, the electrostatic precipitator also includes a cleaning mechanism 200 connected to the housing 100. The cleaning mechanism 200 includes a heated air duct 230 and a fan. One end of the heated air duct 230 is connected to the air source, and the other end is connected to the housing 100. The fan is connected to the heated air duct 230 so that the hot air generated by the air source flows into the housing 100.

[0041] The heating air duct 230 has multiple air outlets 231, which are strip-shaped and staggered. This ensures sufficient airflow at the air outlets 231 and a larger hot air coverage area, allowing the hot air to spread to all parts of the housing 100 more quickly.

[0042] When grease needs to be cleaned, the staff turns on the fan, so that the hot air generated by the air source enters the chamber 100 through the heated air duct 230 under the action of the fan. This causes the temperature inside the chamber 100 to gradually rise, which in turn melts the grease into a liquid and flows towards the opening at the bottom of the chamber 100.

[0043] Reference Figure 4 and Figure 5 To further clean the bottom wall of the housing 100, the cleaning mechanism 200 also includes a frame 210 and multiple scraper blades 220. The frame 210 is fixedly connected to the housing 100, and each of the scraper blades 220 abuts against the bottom wall of the housing 100. In this application, four scraper blades 220 are provided, and each of the four scraper blades 220 corresponds one-to-one with the bottom wall of the housing 100. The scraper blades 220 move in a direction close to or away from the bottom opening of the housing 100 to scrape off the grease on the bottom wall of the housing 100. A drive mechanism 300 for driving the scraper blades 220 to move is provided on the frame 210.

[0044] The operator controls the drive mechanism 300 to move the scraper 220 along the opening near the bottom of the housing 100, thereby scraping off the grease on the bottom wall of the housing 100.

[0045] Reference Figure 5 and Figure 6 To ensure the scraper 220 effectively removes grease from the bottom wall of the corresponding housing 100, it is designed as a telescopic plate. Specifically, the scraper 220 includes a fixed sub-plate 221 and two movable sub-plates 222. The two movable sub-plates 222 are located on either side of the fixed sub-plate 221 and are slidably connected to it. The fixed sub-plate 221 has a sliding groove 610 with open ends. The two movable sub-plates 222 are slidably connected to the sliding groove 610 in directions of mutual proximity or distance. A support groove 226 along the length of the fixed sub-plate 221 is provided on the inner wall of the sliding groove 610. Each movable sub-plate 222 is fixedly connected to a support block 228 slidably connected to the support groove 226, thus preventing the movable sub-plates 222 from easily detaching from the sliding groove 610. The two movable subplates 222 are connected by a connecting spring 227. Under the elastic force of the connecting spring 227, both movable subplates 222 abut against the two side walls of the corresponding bottom wall of the oil scraper 220.

[0046] The drive mechanism 300 includes a drive assembly 400 and a transmission assembly 500. The drive assembly 400 includes a drive motor 410, a drive screw 420, and a drive frame 430. The drive motor 410 is fixedly connected to the frame 210. The drive screw 420 is coaxially fixedly connected to the output shaft of the drive motor 410. The drive frame 430 is threadedly connected to the drive screw 420. The transmission assembly 500 connects the drive frame 430 and the oil scraper 220 to drive the oil scraper 220 to move.

[0047] A support frame 110 is fixedly connected to the inner wall of the housing 100, and a sliding plate 600 is fixedly connected to the support frame 110. The sliding plate 600 is arranged in a direction close to and away from the opening of the bottom wall of the housing 100. The oil scraper 220 has a groove for the sliding plate 600 to pass through, so that the oil scraper 220 is slidably connected to the sliding plate 600, thereby allowing the oil scraper 220 to move in a direction close to or away from the opening of the bottom wall of the housing 100.

[0048] The transmission assembly 500 is provided in four sets, with each set of transmission assembly 500 corresponding to a scraper blade 220. The transmission assembly 500 includes a transmission rod 510, a support rod 520, and a moving rod 530. One end of the transmission rod 510 is rotatably connected to the drive frame 430, and the other end is rotatably connected to one end of the support rod 520 and the moving rod 530. The other end of the support rod 520 is rotatably connected to the support frame 110, and the other end of the moving rod 530 is rotatably connected to the fixed subplate 221.

[0049] Start the drive motor 410 so that the drive motor 410 drives the drive screw 420 to rotate. Due to the limiting effect of multiple sets of transmission components 500, the drive screw 420 is not easy to drive the drive frame 430 to rotate. As a result, the drive frame 430 moves towards or away from the bottom wall of the housing 100 under the action of the drive screw 420. Finally, the transmission rod 510 drives the support rod 520 and the moving rod 530 to rotate. The oil scraper 220 slides along the sliding plate 600 and scrapes off the grease on the bottom wall of the housing 100.

[0050] Reference Figure 5 and Figure 7To prevent the scraper blade 220 from easily dragging grease away from the bottom wall opening of the housing 100 when it moves away from the opening under the action of the drive mechanism 300, the size of the groove perpendicular to the bottom of the housing 100 is larger than the size of the sliding plate 600, so that the side of the sliding plate 600 near the bottom of the housing 100 is spaced apart from the side wall of the groove. The sliding plate 600 has a sliding groove 610 along its length, and rollers are rotatably connected to the scraper blade 220. Two rollers are provided, one first roller 224 and the other second roller 225, along the direction near the bottom of the housing 100. The first roller 224 abuts against the side wall of the sliding groove 610 near the bottom of the housing 100, and the second roller 225 abuts against the side wall of the sliding groove 610 away from the bottom of the housing 100. The distance between the first roller 224 and the second roller 225 is not less than the width of the sliding groove 610. The connection point between the moving rod 530 and the scraper 220 is located on the side of the sliding plate 600 near the bottom of the housing 100.

[0051] When the moving rod 530 pulls the scraper 220 to move away from the opening of the bottom wall of the housing 100, the scraper 220 rotates around the second roller 225 as the axis of rotation. When the scraper 220 rotates to the side wall of the slide groove near the bottom wall of the housing 100 and abuts against the sliding plate 600, the scraper 220 moves along the sliding plate 600 under the action of the moving rod 530. During this process, the scraper 220 is raised, and the abutment between the scraper 220 and the bottom wall of the housing 100 is released, so that the scraper 220 is less likely to drive the grease to move away from the opening of the bottom wall of the housing 100.

[0052] The implementation principle of this application embodiment is as follows: the oil fume is first treated by gas-liquid separation and spraying in a pneumatic cyclone tower. After the pneumatic cyclone tower treatment, it enters an electrostatic oil fume purification device for electrostatic adsorption treatment. After the electrostatic oil fume purification device treatment, it enters a high-efficiency filter device for multi-stage filtration treatment. After the high-efficiency filter device treatment, it enters an activated carbon adsorption-desorption catalytic combustion device for activated carbon adsorption treatment. Finally, after passing the test, it is discharged into the atmosphere.

[0053] When grease accumulates on the inner wall of the electrostatic oil fume purification device, the staff starts the fan so that the hot air generated by the air source flows into the box 100 to heat the grease inside the box 100.

[0054] The staff started the drive motor 410, which caused the scraper blade 220 to scrape the grease off the bottom wall of the housing 100.

[0055] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A non-woven fabric oil fume purification system, characterized in that: It includes gas-liquid separation treatment, spray treatment, electrostatic adsorption treatment, multi-stage filtration treatment and activated carbon adsorption treatment arranged sequentially along the direction of oil fume flow; The electrostatic adsorption treatment employs an electrostatic oil fume purification device, which includes a housing (100) and a cleaning mechanism (200) connected to the housing (100). The cleaning mechanism (200) includes a heating air duct (230) and a fan. The heating air duct (230) has multiple air outlets (231). One end of the heating air duct (230) is connected to an air source, and the other end is connected to the housing (100). The fan is connected to the heating air duct (230) to allow hot air from the air source to flow into the housing (100). The bottom of the housing (100) has an opening. The cleaning mechanism (200) also includes a frame (210) and multiple scraper blades (220). The frame (210) is fixedly connected to the housing (100). The multiple scraper blades (220) are all telescopic plates. The multiple scraper blades (220) are arranged around the housing (100) and all scraper blades (220) abut against the bottom wall of the housing (100). The scraper blades (220) move in a direction close to or away from the bottom opening of the housing (100). The frame (210) is provided with a drive mechanism (300) for driving the scraper blades (220) to move. The drive mechanism (300) includes a drive assembly (400) and a transmission assembly (500). The drive assembly (400) includes a drive motor (410), a drive screw (420), and a drive frame (430). The drive motor (410) is fixedly connected to the frame (210). The drive screw (420) is coaxially fixedly connected to the output shaft of the drive motor (410). The drive frame (430) is threadedly connected to the drive screw (420). The transmission assembly (500) connects the drive frame (430) and the oil scraper (220) to drive the oil scraper (220) to move. A support frame (110) is fixedly connected to the inner wall of the housing (100), and a sliding plate (600) is fixedly connected to the support frame (110). The oil scraper (220) is slidably connected to the sliding plate (600). The transmission assembly (500) includes a transmission rod (510), a support rod (520), and a moving rod (530). One end of the transmission rod (510) is rotatably connected to the drive frame (430), and the other end is rotatably connected to one end of the support rod (520) and the moving rod (530). The other end of the support rod (520) is rotatably connected to the support frame (110), and the other end of the moving rod (530) is rotatably connected to the oil scraper (220). The scraper (220) has a groove for the sliding plate (600) to pass through. The size of the groove is larger than the size of the sliding plate (600) in the direction perpendicular to the bottom of the box (100). The sliding plate (600) has a sliding groove (610) along its length. The scraper (220) is rotatably connected to a roller. Two rollers are provided. Along the direction close to the bottom of the box (100), the two rollers are the first roller (224) and the second roller (225) respectively. The first roller (224) abuts against the side wall of the sliding groove near the bottom of the box (100), and the second roller (225) abuts against the side wall of the sliding groove away from the bottom of the box (100). The connection position of the moving rod (530) and the oil scraper (220) is located on the side of the sliding plate (600) near the bottom of the box (100). The oil scraper (220) includes a fixed sub-plate (221) and two movable sub-plates (222). The two movable sub-plates (222) are respectively located on both sides of the fixed sub-plate (221) and are slidably connected to the fixed sub-plate (221). The fixed sub-plate (221) has a sliding groove (610) with both ends open. The two movable sub-plates (222) are slidably connected to the sliding groove (610) in a direction that is closer to or further away from each other.

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