A hydrogen fluoride scrubbing device

Abstract

The present application belongs to the field of environmental protection engineering construction technology, especially a hydrogen fluoride washing device, aiming at the operation of hydrogen fluoride washing tower, because the waste gas is not fully contacted with lye, and hard crystals are easily formed during the reaction, attached to the filler and tower wall, resulting in the blockage of the filler, the increase of system pressure drop, the increase of fan energy consumption, and the need for manual cleaning, which exists safety risk and affects the washing efficiency, the following scheme is proposed, including a washing tower body, an air inlet is formed on the outside of the washing tower body, and an air inlet pipe is fixedly connected inside the air inlet, an air outlet is formed on the top of the washing tower body. The hydrogen fluoride washing device disclosed by the present application has the beneficial effects of automatically removing the crystals in the tower by rotating spraying and brushing and scraping components, and periodically extruding the filler by using a pressure plate, which can shake off the crystals, enhance the turbulence to improve the purification efficiency, and realize automatic continuous operation, avoiding the high-risk manual cleaning.

Description

Technical Field

[0001] This invention relates to the field of environmental engineering construction technology, and in particular to a hydrogen fluoride scrubbing device. Background Technology

[0002] In industries such as aluminum processing, semiconductor manufacturing, and photovoltaic cells, the treatment of hydrogen fluoride waste gas is a top priority in environmental protection. This highly corrosive and toxic gas not only corrodes equipment, damages factory buildings, and causes air pollution, but also causes irreversible damage to the human body. Short-term inhalation of high concentrations of hydrogen fluoride can lead to pulmonary edema, and long-term exposure can damage bones and teeth. Current methods typically employ alkaline scrubbing towers to treat waste gas. The basic principle is to allow the waste gas to come into full contact with the alkaline solution, resulting in a neutralization reaction and thus removing the hydrogen fluoride.

[0003] When existing hydrogen fluoride scrubbing towers are in use, the waste gas does not come into sufficient contact with the alkaline solution. At the same time, the generated sodium fluoride is prone to supersaturation and precipitation in the tower, forming hard crystals. These crystals mainly adhere to the surface of the packing and the reaction zone of the tower wall, causing blockage of the packing layer, increased system pressure drop, soaring fan energy consumption, and extremely difficult maintenance. They require shutdown for intensive manual cleaning, which poses safety risks and affects scrubbing efficiency. Summary of the Invention

[0004] This invention addresses the technical problems in existing hydrogen fluoride scrubbing towers, where insufficient contact between waste gas and alkaline solution leads to the formation of hard crystals during the reaction, which adhere to the packing and tower walls, causing packing blockage, increased system pressure drop, and increased fan energy consumption. Furthermore, manual cleaning during shutdown poses safety risks and affects scrubbing efficiency. The invention provides a hydrogen fluoride scrubbing device.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A hydrogen fluoride washing device includes a washing tower body. An air inlet is opened on the outside of the washing tower body, and an air inlet pipe is fixedly connected inside the air inlet. An air outlet is opened on the top of the washing tower body, and an air outlet pipe is fixedly connected inside the air outlet. An anti-clogging module is provided inside the washing tower body, and the anti-clogging module includes a tooling horizontal plate. An installation circular opening is opened on one side of the tooling horizontal plate, and a hollow liquid inlet circular frame is connected inside the installation circular opening through a bearing. A linkage gear is fixedly connected to the outside of the hollow liquid inlet circular frame. A circular hole is opened on one side of the tooling horizontal plate, and a rotating cylinder is connected inside the circular hole through a bearing. An adjusting gear is fixedly connected to the outside of the rotating cylinder. The adjusting gear meshes with the linkage gear. A rotating liquid distribution plate is fixedly connected to one end of the hollow liquid inlet circular frame, and two installation ports are opened on one side of the rotating liquid distribution plate. A hollow liquid distribution plate is fixedly connected inside each of the two installation ports.

[0006] In a preferred embodiment, each of the two hollow liquid distribution plates has two nozzles on one side, and spray heads are fixedly connected inside the nozzles. Two connecting holes are opened on the outside of the hollow liquid inlet frame, and connecting pipes are fixedly connected inside the two connecting holes. One end of the connecting pipe is located inside the hollow liquid distribution plate. A protective cover is fixedly connected to one side of the tooling cross plate. A drive motor is installed inside the protective cover, and the drive end of the drive motor is connected to one end of the rotating cylinder through a coupling.

[0007] In a preferred embodiment, tooling blocks are fixedly connected at equal intervals on one side of the rotating liquid distribution plate, and multiple tooling blocks have two circular holes on one side. The interiors of multiple circular holes on the same side are connected to the same linkage rod through bearings. Both ends of the two linkage rods are fixedly connected to bevel gears. A conical toothed frame is fixedly connected to one side of the tooling cross plate. The conical toothed frame is located outside the hollow liquid inlet circular frame and meshes with one of the bevel gears.

[0008] In a preferred embodiment, two circular holes are formed on one side of the rotating liquid distribution plate, and each of the two circular holes is connected to a linkage cylinder via a bearing. A cleaning brush roller is fixedly connected to one end of each linkage cylinder, and the cleaning end of the cleaning brush roller abuts against the inner wall of the reaction area of ​​the washing tower body. A bevel gear is fixedly connected to the other end of each linkage cylinder, and the bevel gear meshes with a bevel gear on the same side. A tooling vertical plate is fixedly connected to one side of the rotating liquid distribution plate, and two tooling vertical plates have equidistant circular holes on one side. Limiting cylinders are slidably connected inside the multiple circular holes. A scraper is fixedly connected to one end of the multiple limiting cylinders on the same side, and the scraper abuts against the cleaning brush roller. A telescopic spring is fixedly connected to one side of each of the multiple limiting cylinders, and one side of the telescopic spring is fixedly connected to one side of the tooling vertical plate.

[0009] In a preferred embodiment, a grid frame is fixedly connected inside the scrubbing tower body, and the grid frame is located below the spray head. One end of the hollow liquid inlet circular frame is fixedly connected to a tooling frame. A limiting circular tube is fixedly connected to the bottom of the tooling frame. One end of the limiting circular tube is fixedly connected to a tooling ring seat. A sliding groove is provided on the tooling ring seat. A lifting seat is slidably connected inside the sliding groove. A lifting pressure plate is fixedly connected to the outside of the lifting seat. The lifting pressure plate is located inside the grid frame. Elastic packing filament units are provided on both the upper and lower surfaces of the lifting pressure plate.

[0010] In a preferred embodiment, both sides of the lifting seat are fixedly connected to return springs, and one side of the return spring is fixedly connected to the inner side of the tooling ring seat. One side of the tooling ring seat has a circular hole four, and an anti-wear limiting frame is fixedly connected inside the circular hole four. A general-purpose motor is fixedly connected to the inner side of the tooling frame, and a rotating circular plate is fixedly connected to the drive end of the general-purpose motor. A circular hole five is opened on one side of the rotating circular plate, and an eccentric winding rod is connected inside the circular hole five through a bearing. A winding and unwinding rope is fixedly connected to the outside of the eccentric winding rod. One end of the winding and unwinding rope passes through the anti-wear limiting frame and is fixedly connected to one side of the lifting seat. A liquid inlet is opened on the outside of the washing tower body, and a liquid inlet pipe is fixedly connected inside the liquid inlet. One end of the liquid inlet pipe is movably connected to the inside of the hollow liquid inlet circular frame. A flow valve is connected to the outside of the liquid inlet pipe through a flange. A concentration monitor is installed at the outlet port of the air outlet pipe.

[0011] In a preferred embodiment, the bottom of the washing tower body is provided with a drain outlet, and a drain pipe is fixedly connected inside the drain outlet. A valve is connected to the outside of the drain pipe through a flange. A self-cleaning module is provided on the drain pipe. The self-cleaning module includes a support plate, which is fixedly connected inside the drain pipe. A circular hole six is ​​provided on one side of the support plate. A self-rotating rod is connected inside the circular hole six through a bearing. A spiral blade is fixedly connected to the outside of the self-rotating rod.

[0012] In a preferred embodiment, a rotating tooling plate is fixedly connected to one end of the rotating rod, a cleaning brush is fixedly connected to one side of the rotating tooling plate, the cleaning surface of the cleaning brush abuts against the bottom inner wall of the washing tower body, a second protective cover is fixedly connected to one side of the rotating tooling plate, a servo motor is fixedly connected to one side of the second protective cover, a protruding rod is fixedly connected to the drive end of the servo motor, and a roller is connected to one side of the protruding rod through a bearing.

[0013] In a preferred embodiment, U-shaped brackets are fixedly connected to both sides of the rotating tooling plate, and an adjusting arm is connected to the opposite side of each of the two U-shaped brackets via a bearing. An impact head is fixedly connected to one side of each of the two adjusting arms, and two limiting springs are fixedly connected to one side of each of the two adjusting arms. The same vibration support plate is fixedly connected to one side of the multiple limiting springs.

[0014] In a preferred embodiment, a circulating liquid tank is provided on one side of the washing tower body, and a circulating pump is provided on the circulating liquid tank. A demister is provided inside the washing tower body and is located above the spray head. Multiple viewing windows are provided on the outside of the washing tower body.

[0015] As can be seen from the above, the hydrogen fluoride scrubbing device provided by the present invention has a rotating spray component and synchronously moving cleaning brush rollers and scrapers, which can actively and continuously clean the sodium fluoride crystals on the inner wall of the scrubbing tower body and the packing area, preventing them from adhering and accumulating. Through the periodic reciprocating motion of the lifting pressure plate, the elastic packing filament unit is regularly squeezed and released. This action can shake off the newly formed micro crystals on the surface of the packing, preventing them from growing into solid clumps. On the other hand, it can break the steady state of gas-liquid flow, enhance the degree of turbulence, and make the alkaline solution and hydrogen fluoride waste gas more fully contacted and react more completely, thereby improving the mass transfer efficiency and purification effect. The entire anti-clogging and self-cleaning process is driven by a motor and operates automatically, without the need for frequent shutdowns for high-intensity manual cleaning. This not only reduces the labor intensity and safety risks of operators by avoiding contact with toxic substances and entering confined spaces, but also reduces the impact on production continuity and improves the online rate of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a hydrogen fluoride washing device proposed in this invention; Figure 2 This is a side view of a hydrogen fluoride washing device proposed in this invention. Figure 3 This is a schematic diagram of the internal structure of the washing tower body of a hydrogen fluoride washing device proposed in this invention. Figure 4 This is a schematic diagram of the anti-clogging module structure of a hydrogen fluoride washing device proposed in this invention; Figure 5 This is a schematic diagram of the hollow liquid inlet circular frame portion of a hydrogen fluoride washing device proposed in this invention. Figure 6 This is a schematic diagram of the anti-clogging module of a hydrogen fluoride washing device proposed in this invention; Figure 7 This is a schematic diagram of the scraper section of a hydrogen fluoride washing device proposed in this invention. Figure 8 This is a schematic diagram of the lifting pressure plate part of a hydrogen fluoride washing device proposed in this invention; Figure 9 This is a schematic diagram of the self-cleaning module structure of a hydrogen fluoride washing device proposed in this invention; Figure 10 This is a schematic diagram of the self-cleaning module of a hydrogen fluoride washing device proposed in this invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Scrubber body; 2. Air inlet pipe; 3. Viewing window; 4. Air outlet pipe; 5. Anti-clogging module; 501. Liquid inlet pipe; 502. Flow valve; 503. Concentration monitor; 504. Grille frame; 505. Tooling cross plate; 506. Hollow liquid inlet circular frame; 507. Rotating liquid distribution plate; 508. Hollow liquid distribution plate; 509. Linkage gear; 510. Rotating cylinder; 511. Adjusting gear 512. Protective cover one; 513. Tooling block; 514. Linkage rod; 515. Bevel gear one; 516. Bevel gear frame; 517. Drive motor; 518. Spray head; 519. Linkage cylinder; 520. Cleaning brush roller; 521. Bevel gear two; 522. Tooling vertical plate; 523. Limiting cylinder; 524. Telescopic spring; 525. Scraper; 526. Tooling frame; 5 27. Limiting circular tube; 528. Lifting pressure plate; 529. Elastic packing filament unit; 530. Tooling ring seat; 531. Lifting seat; 532. General motor; 533. Rotating circular plate; 534. Connecting pipe; 535. Eccentric coil rod; 536. Anti-wear limiting frame; 537. Rope winding and unwinding body; 538. Return spring; 6. Sewage pipe; 7. Valve; 8. Self-cleaning module; 801. Support plate; 802. Rotating circular rod; 803. Spiral blade; 804. Rotating tooling plate; 805. Cleaning brush; 806. Protective cover II; 807. Servo motor; 808. Protruding rod; 809. Roller; 810. U-shaped bracket; 811. Adjusting arm; 812. Impact head; 813. Vibration support plate; 814. Limiting spring; 9. Circulating liquid tank; 10. Circulating pump; 11. Demister. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0021] The hydrogen fluoride scrubbing device disclosed in this invention is mainly used in the operation of hydrogen fluoride scrubbing towers. Due to insufficient contact between the waste gas and the alkaline solution, and the easy formation of hard crystals during the reaction, these crystals adhere to the packing and tower wall, leading to packing blockage, increased system pressure drop, increased fan energy consumption, and the need for manual cleaning after shutdown. This poses safety risks and affects scrubbing efficiency.

[0022] Reference Figures 1-10 A hydrogen fluoride scrubbing device includes a scrubbing tower body 1. An air inlet is provided on the exterior of the scrubbing tower body 1, and an air inlet pipe 2 is fixedly connected inside the air inlet. An air outlet is provided on the top of the scrubbing tower body 1, and an air outlet pipe 4 is fixedly connected inside the air outlet. An anti-clogging module 5 is provided inside the scrubbing tower body 1. The anti-clogging module 5 includes a tooling horizontal plate 505. An installation circular opening is provided on one side of the tooling horizontal plate 505, and a hollow liquid inlet circular frame 506 is connected to the inside of the installation circular opening via a bearing. A linkage gear 509 is fixedly connected to the outside of 506. A circular hole is opened on one side of the tooling cross plate 505, and a rotating cylinder 510 is connected to the inside of the circular hole through a bearing. An adjusting gear 511 is fixedly connected to the outside of the rotating cylinder 510. The adjusting gear 511 meshes with the linkage gear 509. A rotating liquid distribution plate 507 is fixedly connected to one end of the hollow liquid inlet circular frame 506, and two mounting ports are opened on one side of the rotating liquid distribution plate 507. A hollow liquid distribution plate 508 is fixedly connected inside the two mounting ports.

[0023] Reference Figures 1-8In a preferred embodiment, two nozzles are provided on one side of each of the two hollow liquid distribution plates 508, and spray heads 518 are fixedly connected inside the nozzles. Two connecting holes are provided on the outside of the hollow liquid inlet frame 506, and connecting pipes 534 are fixedly connected inside the two connecting holes. One end of the connecting pipe 534 is located inside the hollow liquid distribution plate 508. A protective cover 512 is fixedly connected to one side of the tooling horizontal plate 505. A drive motor 517 is provided inside the protective cover 512. The drive end of the drive motor 517 is connected to one end of the rotating cylinder 510 through a coupling.

[0024] Reference Figures 1-8 In a preferred embodiment, tooling blocks 513 are fixedly connected at equal intervals on one side of the rotating liquid distribution plate 507, and one side of each tooling block 513 is provided with a second round hole. The interior of the multiple second round holes on the same side is connected to the same linkage rod 514 through bearings. Both ends of the two linkage rods 514 are fixedly connected with bevel gears 515. One side of the tooling cross plate 505 is fixedly connected with a conical gear frame 516. The conical gear frame 516 is located outside the hollow liquid inlet round frame 506, and the conical gear frame 516 meshes with one of the bevel gears 515.

[0025] Reference Figures 1-8 In a preferred embodiment, two circular holes are formed on one side of the rotating liquid distribution plate 507, and each of the two circular holes is connected to a linkage cylinder 519 via a bearing. A cleaning brush roller 520 is fixedly connected to one end of each linkage cylinder 519, with the cleaning end of the cleaning brush roller 520 abutting against the inner wall of the reaction area of ​​the washing tower body 1. A bevel gear 521 is fixedly connected to the other end of each linkage cylinder 519, and the bevel gear 521 meshes with a bevel gear 515 on the same side. A tooling vertical plate 522 is fixedly connected to one side of the liquid plate 507. Smooth holes are equally spaced on one side of both tooling vertical plates 522. Limiting cylinders 523 are slidably connected inside the multiple smooth holes. One end of the multiple limiting cylinders 523 located on the same side is fixedly connected to the same scraper 525. The scraper 525 abuts against the cleaning brush roller 520. A telescopic spring 524 is fixedly connected to one side of the multiple limiting cylinders 523. One side of the telescopic spring 524 is fixedly connected to one side of the tooling vertical plate 522.

[0026] Reference Figures 1-8In a preferred embodiment, a grid frame 504 is fixedly connected inside the scrubbing tower body 1, and the grid frame 504 is located below the spray head 518. One end of the hollow liquid inlet circular frame 506 is fixedly connected to a tooling frame 526. The bottom of the tooling frame 526 is fixedly connected to a limiting circular tube 527. One end of the limiting circular tube 527 is fixedly connected to a tooling ring seat 530. A sliding groove is provided on the tooling ring seat 530. A lifting seat 531 is slidably connected inside the sliding groove. A lifting pressure plate 528 is fixedly connected to the outside of the lifting seat 531. The lifting pressure plate 528 is located inside the grid frame 504. Elastic packing filament units 529 are provided on both the upper and lower surfaces of the lifting pressure plate 528.

[0027] Reference Figures 1-8 In a preferred embodiment, both sides of the lifting seat 531 are fixedly connected with return springs 538, and one side of the return springs 538 is fixedly connected to one side of the tooling ring seat 530. A circular hole four is provided on one side of the tooling ring seat 530, and an anti-wear limiting frame 536 is fixedly connected inside the circular hole four. A general-purpose motor 532 is fixedly connected to one side of the tooling frame 526, and a rotating circular plate 533 is fixedly connected to the drive end of the general-purpose motor 532. A circular hole five is provided on one side of the rotating circular plate 533, and the interior of the circular hole five is... The bearing is connected to an eccentric winding rod 535, and an external winding rope 537 is fixedly connected to the eccentric winding rod 535. One end of the winding rope 537 passes through the anti-wear limiting frame 536 and is fixedly connected to one side of the lifting seat 531. The washing tower body 1 has a liquid inlet on its exterior. An inlet pipe 501 is fixedly connected inside the liquid inlet. One end of the inlet pipe 501 is movably connected to the interior of the hollow inlet circular frame 506. A flow valve 502 is connected to the exterior of the inlet pipe 501 through a flange. A concentration monitor 503 is installed at the outlet port of the air outlet pipe 4.

[0028] Specifically, industrial waste gas containing hydrogen fluoride enters the lower part of the scrubbing tower body 1 through the inlet pipe 2. The alkaline solution enters the hollow inlet circular frame 506 through the inlet pipe 501 and is regulated by the flow valve 502. The alkaline solution is then diverted to two hollow liquid distribution plates 508 through the connecting pipe 534 and finally atomized and sprayed out by the spray head 518. The waste gas flows upward and comes into countercurrent contact with the downward sprayed alkaline solution in the area where the elastic packing bundle unit 529 is located in the packing area, where a neutralization reaction occurs to generate sodium fluoride. The purified gas continues to rise and is discharged through the outlet pipe 4 after the demister 11 removes the entrained droplets. The concentration monitor 503 monitors the discharged gas, and the sodium fluoride-containing waste liquid generated by the reaction falls to the bottom of the tower. When the anti-clogging module 5 is working, the drive motor 517 starts, driving the rotating cylinder 510 and the adjusting gear 511 on it to rotate. The adjusting gear 511 meshes with the linkage gear 509 fixed on the hollow liquid inlet frame 506, thereby driving the entire hollow liquid inlet frame 506 and the rotating liquid distribution plate 507, hollow liquid distribution plate 508 and spray head 518 fixed to it to rotate around the axis of the hollow liquid inlet frame 506. This makes the spray area no longer fixed, but covers an annular area, improving the uniformity of alkali solution distribution. As the rotating liquid distribution plate 507 revolves, the bevel gear 515 at one end of the linkage rod 514 meshes with the bevel gear frame 516 fixed on the tooling horizontal plate 505. Since the bevel gear frame 516 is stationary, the bevel gear 515 is forced to rotate, which in turn drives the other end of the bevel gear 515 to rotate synchronously through the linkage rod 514. These two bevel gears 515 mesh with the bevel gear 521 fixed on the linkage cylinder 519, thereby driving the two cleaning brush rollers 520 to high speed. The self-rotating cleaning brush roller 520, driven by its revolution, thoroughly scrubs the inner wall of the washing tower body 1, removing attached crystals. The scraper 525, under the action of the telescopic spring 524, remains pressed firmly against the bristles of the cleaning brush roller 520. When the cleaning brush roller 520 rotates, the scraper 525 scrapes off any crystals and debris entangled or adhered to its surface, maintaining the cleaning efficiency of the brush roller. The general-purpose motor 532 operates, driving the rotating circular plate 533 to rotate. The eccentric coil rod 535 follows the rotating circular plate 533 in a circular motion, periodically... The rope 537 is tightened and loosened. The rope 537 passes through the anti-wear limit frame 536 and connects to the lifting seat 531. When the rope is tightened, it pulls the lifting seat 531 to slide upward against the elastic force of the return spring 538. When the rope is loosened, the lifting seat 531 returns to its original position under the action of the return spring 538. This process is repeated, which drives the lifting pressure plate 528, which is fixed to the lifting seat 531, to move up and down in the grid frame 504. This periodically squeezes and releases the elastic filler filament unit 529, thereby achieving the effect of breaking up the initial crystals and improving mass transfer. In specific application scenarios, the anti-clogging module 5, through rotating spray components and synchronously moving cleaning brush rollers 520 and scrapers 525, can actively and continuously clean the sodium fluoride crystals on the inner wall of the scrubbing tower body 1 and the packing area, preventing their adhesion and accumulation. The periodic reciprocating motion of the lifting pressure plate 528 regularly squeezes and releases the elastic packing filament unit 529. This action, on the one hand, shakes off newly formed micro-crystals on the packing surface, preventing them from growing into solid clumps; on the other hand, it breaks the steady state of gas-liquid flow, enhancing turbulence and allowing for more thorough contact and more complete reaction between the alkaline solution and hydrogen fluoride waste gas, thereby improving mass transfer efficiency and purification effect. The entire anti-clogging and self-cleaning process is driven by a motor and operates automatically, eliminating the need for frequent shutdowns for intensive manual cleaning. This not only reduces the labor intensity and safety risks for operators (avoiding contact with toxic substances and entry into confined spaces) but also minimizes the impact on production continuity and improves the equipment's online rate.

[0029] Reference Figure 1 , Figure 2 , Figure 3 , Figure 9 and Figure 10 In a preferred embodiment, a drain outlet is provided at the bottom of the washing tower body 1, and a drain pipe 6 is fixedly connected inside the drain outlet. A valve 7 is connected to the outside of the drain pipe 6 through a flange. A self-cleaning module 8 is provided on the drain pipe 6. The self-cleaning module 8 includes a support plate 801, which is fixedly connected inside the drain pipe 6. A circular hole 6 is provided on one side of the support plate 801. A rotating rod 802 is connected inside the circular hole 6 through a bearing. A spiral blade 803 is fixedly connected to the outside of the rotating rod 802.

[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 9 and Figure 10 In a preferred embodiment, a rotating tooling plate 804 is fixedly connected to one end of the rotating rod 802, a cleaning brush 805 is fixedly connected to one side of the rotating tooling plate 804, the cleaning surface of the cleaning brush 805 abuts against the bottom inner wall of the washing tower body 1, a second protective cover 806 is fixedly connected to one side of the rotating tooling plate 804, a servo motor 807 is fixedly connected to one side of the second protective cover 806, a protruding rod 808 is fixedly connected to the drive end of the servo motor 807, and a roller 809 is connected to one side of the protruding rod 808 through a bearing.

[0031] Reference Figure 1 , Figure 2 , Figure 3 , Figure 9 and Figure 10In a preferred embodiment, U-shaped brackets 810 are fixedly connected to both sides of the rotating tooling plate 804, and an adjusting arm 811 is connected to the opposite side of the two U-shaped brackets 810 via a bearing. An impact head 812 is fixedly connected to one side of each of the two adjusting arms 811, and two limiting springs 814 are fixedly connected to one side of each of the two adjusting arms 811. The same vibration support plate 813 is fixedly connected to one side of the multiple limiting springs 814.

[0032] Specifically, the waste liquid and sediment at the bottom of the tower are discharged through the drain pipe 6. At this time, the spiral blade 803 drives the rotating rod 802 to rotate, causing the rotating tooling plate 804 to rotate accordingly. The cleaning brush 805 fixed on it rotates accordingly, sweeping the bottom inner wall of the washing tower body 1 to prevent sediment accumulation. The drive end of the servo motor 807 is fixed with a protruding rod 808 and a roller 809. When the servo motor 807 rotates, the protruding rod 808 drives the roller 809 to make a circular motion. The roller 809 will periodically squeeze the vibrating support plate 813, causing the adjusting arm 811 to swing around the hinge point. The movement causes the impact head 812 to strike the inner wall at the bottom of the washing tower body 1. The limit spring 814 is used to quickly reset the adjusting arm 811 and the impact head 812. The continuous striking generates vibration, which is transmitted to the bottom of the tower, making the precipitated solid matter loose and easy to discharge, effectively preventing bottom caking. Part of the waste liquid at the bottom of the tower can be returned to the inlet system for reuse through the pipeline connected to the circulating liquid tank 9 under the action of the circulating pump 10, saving reagents and water resources. The inside can be observed through the viewing window 3, and combined with the data of the concentration monitor 503, the operator can adjust the process in time. In specific application scenarios, the bottom cleaning brush 805 and the impact head 812 are responsible for cleaning and shaking off the accumulated dirt at the bottom, respectively, ensuring that there are no dead corners in cleaning and effectively preventing the sediment at the bottom of the tower from hardening and clogging the drain pipe 6.

[0033] Reference Figure 1 , Figure 2 and Figure 6 In a preferred embodiment, a circulating liquid tank 9 is provided on one side of the washing tower body 1, and a circulating pump 10 is provided on the circulating liquid tank 9. A demister 11 is provided inside the washing tower body 1, and the demister 11 is located above the spray head 518. Multiple viewing windows 3 are provided on the outside of the washing tower body 1.

[0034] Working principle: Industrial waste gas containing hydrogen fluoride enters the lower part of the scrubbing tower body 1 through the inlet pipe 2. The alkaline solution enters the hollow inlet circular frame 506 through the inlet pipe 501 and is regulated by the flow valve 502. The alkaline solution is then diverted to two hollow liquid distribution plates 508 through the connecting pipe 534 and finally atomized and sprayed out by the spray head 518. The waste gas flows upward and comes into countercurrent contact with the downward sprayed alkaline solution in the area where the elastic packing bundle unit 529 is located in the packing area, where a neutralization reaction occurs to generate sodium fluoride. The purified gas continues to rise and is discharged through the outlet pipe 4 after the demister 11 removes the entrained droplets. The concentration monitor 503 monitors the discharged gas, and the sodium fluoride-containing waste liquid generated by the reaction falls to the bottom of the tower. When the anti-clogging module 5 is working, the drive motor 517 starts, driving the rotating cylinder 510 and its adjusting gear 511 to rotate. The adjusting gear 511 meshes with the linkage gear 509 fixed on the hollow liquid inlet frame 506, thereby driving the entire hollow liquid inlet frame 506 and the rotating liquid distribution plate 507, hollow liquid distribution plate 508 and spray head 518 fixed thereto to rotate around the axis of the hollow liquid inlet frame 506. This makes the spray area no longer fixed, but covers an annular area, improving the uniformity of alkali distribution. While the rotating liquid distribution plate 507 revolves, the bevel gear 515 at one end of the linkage rod 514 meshes with the bevel gear frame 516 fixed on the tooling cross plate 505. Since the bevel gear frame 516 is stationary, the bevel gear 515 is forced to rotate, which in turn drives the other end of the bevel gear 515 to rotate synchronously through the linkage rod 514. Two bevel gears 515 mesh with bevel gears 521 fixed on the linkage cylinder 519, thereby driving two cleaning brush rollers 520 to rotate at high speed. The rotating cleaning brush rollers 520 can thoroughly scrub the inner wall of the washing tower body 1 and remove attached crystals under the action of the telescopic spring 524. The scraper 525 is always pressed against the bristles of the cleaning brush rollers 520 under the action of the telescopic spring 524. When the cleaning brush rollers 520 rotate, the scraper 525 can scrape off the crystals and debris wrapped or adhered to its surface, maintaining the cleaning efficiency of the brush rollers. The general motor 532 works to drive the rotating disc 533 to rotate. The eccentric winding rod 535 moves in a circle with the rotating disc 533, periodically tightening and loosening the winding rope 537. The winding rope 537 passes through the anti-wear limit frame 536 and connects to the lifting seat 531. When the rope is tightened, it pulls the lifting seat 531 to slide upward against the elastic force of the return spring 538.When the rope is relaxed, the lifting seat 531 resets under the action of the return spring 538. This process repeats, causing the lifting pressure plate 528, which is fixed to the lifting seat 531, to move up and down within the grid frame 504. This periodically squeezes and releases the elastic packing filament unit 529, breaking down the initial crystals. Waste liquid and sediment at the bottom of the tower are discharged through the drain pipe 6. At this time, the spiral blade 803 drives the rotating rod 802 to rotate, causing the rotating tooling plate 804 to rotate accordingly. The cleaning brush 805 fixed on it rotates accordingly, sweeping the bottom inner wall of the washing tower body 1 to prevent sediment accumulation. The drive end of the servo motor 807 is fixed with a protruding rod 808 and a roller 809. When the servo motor 807 rotates, the protruding rod 808 carries... The rotating roller 809 makes a circular motion, periodically squeezing the vibrating support plate 813, causing the adjusting arm 811 to swing around the hinge point, driving the impact head 812 to strike the bottom inner wall of the washing tower body 1. The limiting spring 814 is used to quickly reset the adjusting arm 811 and the impact head 812. The continuous striking generates vibration, which is transmitted to the bottom of the tower, making the settled solid matter loose and easy to discharge, effectively preventing bottom caking. Part of the waste liquid at the bottom of the tower can be returned to the inlet system for reuse through the pipeline connected to the circulating liquid tank 9 under the action of the circulating pump 10, saving reagents and water resources. The internal structure can be observed through the viewing window 3, and combined with the data from the concentration monitor 503, the operator can adjust the process in a timely manner.

[0035] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0036] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A hydrogen fluoride washing device, characterized in that, The system includes a washing tower body, an air inlet on the outside of the washing tower body, an air inlet pipe fixedly connected inside the air inlet, an air outlet on the top of the washing tower body, an air outlet pipe fixedly connected inside the air outlet, an anti-clogging module inside the washing tower body, and a tooling horizontal plate, an installation round opening on one side of the tooling horizontal plate, a hollow liquid inlet round frame connected inside the installation round opening via a bearing, a linkage gear fixedly connected outside the hollow liquid inlet round frame (506), a round hole on one side of the tooling horizontal plate, a rotating cylinder connected inside the round hole via a bearing, an adjusting gear fixedly connected outside the rotating cylinder, the adjusting gear meshing with the linkage gear, a rotating liquid distribution plate fixedly connected to one end of the hollow liquid inlet round frame, and two installation ports on one side of the rotating liquid distribution plate, both of which are fixedly connected to a hollow liquid distribution plate. Two nozzles are provided on one side of each of the two hollow liquid distribution plates, and spray heads are fixedly connected inside the nozzles. Two connecting holes are provided on the outside of the hollow liquid inlet frame, and connecting pipes are fixedly connected inside the two connecting holes. One end of the connecting pipe is located inside the hollow liquid distribution plate. A protective cover is fixedly connected to one side of the tooling cross plate. A drive motor is installed inside the protective cover. The drive end of the drive motor is connected to one end of the rotating cylinder through a coupling. The rotating liquid distribution plate is fixedly connected to tooling blocks at equal intervals on one side, and multiple tooling blocks are provided with two round holes on one side. The interiors of multiple round holes on the same side are connected to the same linkage rod through bearings. Both ends of the two linkage rods are fixedly connected to bevel gears. A bevel gear frame is fixedly connected to one side of the tooling cross plate. The bevel gear frame is located outside the hollow liquid inlet round frame and meshes with one of the bevel gears. Two circular holes are provided on one side of the rotating liquid distribution plate, and the interior of each circular hole is connected to a linkage cylinder via a bearing. A cleaning brush roller is fixedly connected to one end of each linkage cylinder, and the cleaning end of the cleaning brush roller abuts against the inner wall of the reaction area of ​​the washing tower body. A bevel gear is fixedly connected to the other end of each linkage cylinder, and the bevel gear meshes with a bevel gear on the same side. A tooling vertical plate is fixedly connected to one side of the rotating liquid distribution plate. Smooth holes are provided at equal intervals on one side of each of the two tooling vertical plates. Limiting cylinders are slidably connected inside the multiple smooth holes. A scraper is fixedly connected to one end of each of the multiple limiting cylinders on the same side, and the scraper abuts against the cleaning brush roller. A telescopic spring is fixedly connected to one side of each of the multiple limiting cylinders, and one side of the telescopic spring is fixedly connected to one side of the tooling vertical plate.

2. The hydrogen fluoride scrubbing device according to claim 1, characterized in that, The scrubbing tower body is internally fixedly connected to a grid frame, which is located below the spray head. One end of the hollow liquid inlet circular frame is fixedly connected to a tooling frame. The bottom of the tooling frame is fixedly connected to a limiting circular tube. One end of the limiting circular tube is fixedly connected to a tooling ring seat. A sliding groove is provided on the tooling ring seat. A lifting seat is slidably connected inside the sliding groove. A lifting pressure plate is fixedly connected to the outside of the lifting seat. The lifting pressure plate is located inside the grid frame. Elastic packing filament units are provided on both the upper and lower surfaces of the lifting pressure plate.

3. The hydrogen fluoride washing device according to claim 2, characterized in that, Both sides of the lifting seat are fixedly connected with return springs, and one side of the return spring is fixedly connected to the inner side of the tooling ring seat. One side of the tooling ring seat has a circular hole four, and an anti-wear limiting frame is fixedly connected inside the circular hole four. A general motor is fixedly connected inside the tooling frame, and a rotating circular plate is fixedly connected to the drive end of the general motor. A circular hole five is opened on one side of the rotating circular plate, and an eccentric winding rod is connected inside the circular hole five through a bearing. A winding and unwinding rope is fixedly connected to the outside of the eccentric winding rod. One end of the winding and unwinding rope passes through the anti-wear limiting frame and is fixedly connected to one side of the lifting seat. A liquid inlet is opened on the outside of the washing tower body, and a liquid inlet pipe is fixedly connected inside the liquid inlet. One end of the liquid inlet pipe is movably connected to the inside of the hollow liquid inlet circular frame. A flow valve is connected to the outside of the liquid inlet pipe through a flange. A concentration monitor is installed at the outlet port of the air outlet pipe.

4. The hydrogen fluoride washing device according to claim 3, characterized in that, The bottom of the washing tower body is provided with a drain outlet, and a drain pipe is fixedly connected inside the drain outlet. A valve is connected to the outside of the drain pipe through a flange. A self-cleaning module is provided on the drain pipe. The self-cleaning module includes a support plate, which is fixedly connected inside the drain pipe. A circular hole six is ​​provided on one side of the support plate. A self-rotating rod is connected inside the circular hole six through a bearing. A spiral blade is fixedly connected to the outside of the self-rotating rod.

5. A hydrogen fluoride washing device according to claim 4, characterized in that, One end of the rotating rod is fixedly connected to a rotating fixture plate, and a cleaning brush is fixedly connected to one side of the rotating fixture plate. The cleaning surface of the cleaning brush abuts against the bottom inner wall of the washing tower body. A second protective cover is fixedly connected to one side of the rotating fixture plate, and a servo motor is fixedly connected to one side of the second protective cover. A protruding rod is fixedly connected to the drive end of the servo motor, and a roller is connected to one side of the protruding rod through a bearing.

6. The hydrogen fluoride washing device according to claim 5, characterized in that, Both sides of the rotating tooling plate are fixedly connected to U-shaped brackets, and each of the two U-shaped brackets is connected to an adjusting arm via a bearing. Each of the two adjusting arms is fixedly connected to an impact head, and each of the two adjusting arms is fixedly connected to two limiting springs. Each of the multiple limiting springs is fixedly connected to the same vibration support plate.

7. A hydrogen fluoride washing device according to claim 6, characterized in that, A circulating liquid tank is provided on one side of the washing tower body, and a circulating pump is provided on the circulating liquid tank. A demister is provided inside the washing tower body, located above the spray head. Multiple viewing windows are provided on the outside of the washing tower body.

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