Energy-saving and environment-friendly waste gas purification equipment for papermaking

Abstract

The invention discloses energy-saving and environment-friendly waste gas purification equipment for papermaking, and belongs to the technical field of waste gas treatment and purification. A turning type filler supporting assembly for supporting and turning filler is fixedly connected in the tank body; the tank body is fixedly connected with a liquid adding assembly used for circularly spraying alkali liquor, feeding the alkali liquor and discharging waste liquid, and the liquid spraying end of the liquid adding assembly is located at the top of the filler on the turning type filler supporting assembly; the lower end of the tank body is fixedly connected with a self-cleaning filter assembly; continuous cleaning and continuous filtering are achieved, shutdown treatment is not needed, the adjusting mode is simple and more energy-saving and environment-friendly, meanwhile, the follow-up gas outlet assembly sprays gas into the tank body in a scattered mode, the gas dispersity is improved, acid pickling is facilitated, in addition, the turning type filler supporting assembly can drive filler to turn over, a flow channel for gas to pass through the filler is changed, and the service life of the gas is prolonged. The gas dispersity is further improved, and full contact of the gas and alkali liquor is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment and purification, and particularly relates to an energy-saving and environment-friendly waste gas purification device for papermaking. Background Art

[0002] A large amount of waste gas is generated in papermaking production. The waste gas contains a large amount of particulate matter and acidic components. The particulate matter and acidic components are generally purified using a purification device.

[0003] Chinese Patent Application CN206778150U, a waste gas purification device for a paper mill, includes a purification tower and a purification chamber. The purification tower is connected to the purification chamber through a connecting pipe. An air inlet is provided on one side of the purification chamber, and an air inlet pipe is connected to the air inlet. An air outlet is provided at the top of the purification tower. A plurality of spray nozzles are provided inside the purification tower. The spray nozzles are arranged in at least 4 groups from top to bottom of the purification tower. The spray nozzles in the same group are connected through a group of spray water branch pipes. All the spray water branch pipes are connected to each other and then connected to the spray nozzles. A water outlet is provided at the bottom of the purification tower, and a filter element is provided inside the purification chamber. Compared with the prior art, the present invention can filter and absorb the harmful substances in the waste gas to the greatest extent after dust removal, physical filtration, and spray absorption of the waste gas. The waste water obtained by spraying can be catalytically reduced to generate industrial raw materials, realizing the recycling of industrial raw materials on the premise of avoiding environmental pollution and saving costs.

[0004] However, when cleaning the physical structure after particulate matter filtration in the above structure, it is necessary to stop the machine for treatment, which is not conducive to the use of the production line. At the same time, when the filler is sprayed and absorbed, the gas flow channel is fixed, and the adsorption efficiency needs to be improved.

[0005] Based on this, the present invention designs an energy-saving and environment-friendly waste gas purification device for papermaking to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned disadvantages of the prior art, the present invention provides an energy-saving and environment-friendly waste gas purification device for papermaking.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0008] An energy-saving and environment-friendly waste gas purification device for papermaking, including a tank body;

[0009] A turning type filler support assembly for filler support and turning is fixedly connected inside the tank body;

[0010] A liquid adding assembly for alkali liquid circulating spraying, alkali liquid feeding, and waste liquid discharging is fixedly connected to the tank body. The liquid spraying end of the liquid adding assembly is located on the top of the filler on the turning type filler support assembly;

[0011] A self-cleaning type filtering assembly is fixedly connected to the lower end of the tank body;

[0012] The self-cleaning filter assembly includes a filter assembly, a dust cleaning assembly, a follow-up air outlet assembly, a horizontal pipe, an air inlet pipe, and an adjustable air guiding assembly. The bottom of the adjustable air guiding assembly is fixedly connected to the top of the air inlet pipe. One end of two groups of horizontal pipes is symmetrically and fixedly installed at the air holes opened at the lower end of the horizontal pipe. One end of two groups of dust cleaning assemblies is symmetrically and fixedly installed at the air holes opened at the upper end of the adjustable air guiding assembly. The other end of the horizontal pipe is fixedly connected to the filter assembly in a communicating manner. The air outlet end of the dust cleaning assembly is located above the filtering part of the filter assembly. The tops of the filter assemblies are all fixedly connected to the follow-up air outlet assembly. The follow-up air outlet assembly is fixedly connected to the tank body. The air outlet end of the follow-up air outlet assembly is located inside the tank body. When cleaning the dust in the left filter assembly, the adjustable air guiding assembly conducts the air inlet pipe to the right horizontal pipe and the left follow-up air outlet assembly. A part of the gas enters the right filter assembly for normal filtering, and a part of the gas enters the left dust cleaning assembly for cleaning. After the left filter assembly is cleaned, the adjustable air guiding assembly conducts the air inlet pipe to the right horizontal pipe and all the follow-up air outlet assemblies are not conducted, and all the gas enters the right filter assembly for filtering. When cleaning the dust in the right filter assembly, the adjustable air guiding assembly conducts the air inlet pipe to the left horizontal pipe and the right follow-up air outlet assembly. A part of the gas enters the left filter assembly for normal filtering, and a part of the gas enters the right dust cleaning assembly for cleaning. After the right filter assembly is cleaned, the adjustable air guiding assembly conducts the air inlet pipe to the left horizontal pipe and all the follow-up air outlet assemblies are not conducted, and all the gas enters the left filter assembly for filtering.

[0013] Furthermore, the adjustable air guiding assembly includes a second motor, an outer cylinder, a valve core, a first L-shaped hole, a second through hole, and a second L-shaped hole. The bottom of the outer cylinder is fixedly connected to the top of the air inlet pipe. The second motor is fixedly installed on the top of the outer cylinder. The output end of the second motor is fixedly connected with a valve core. The outer wall of the valve core is in sliding fit with the inner wall of the outer cylinder. The lower end of the valve core is provided with a first L-shaped hole. The valve core is provided with a second through hole at the turning of the first L-shaped hole, and the included angle between the second through hole and the horizontal part of the first L-shaped hole in the horizontal plane direction is 90 degrees. The valve core is fixedly connected with a second L-shaped hole at the top of the turning of the first L-shaped hole, and the air outlet end of the second L-shaped hole and the air outlet end of the first L-shaped hole are located on the left and right sides of the valve core. One end of two groups of horizontal pipes is symmetrically and fixedly installed at the air holes opened at the lower end of the outer cylinder, and the air outlet ends of the second through hole and the first L-shaped hole are at the same horizontal end as the horizontal pipe. One end of two groups of dust cleaning assemblies is symmetrically and fixedly installed at the air holes opened at the upper end of the outer cylinder. The second L-shaped hole and the air inlet end of the connecting pipe are on the same horizontal plane.

[0014] Furthermore, the filter assembly includes a filter box and a filter plate. The filter plate is fixedly installed in the filter box. The horizontal pipe is fixedly connected to the filter box, and the horizontal pipe is arranged lower than the filter plate. The air outlet end of the follow-up air outlet assembly is located at the top of the filter plate, and the ash scraping end of the follow-up air outlet assembly is located at the bottom of the filter plate.

[0015] Furthermore, a dust discharge pipe is fixedly connected to the bottom of the filter box, and a control valve is fixedly connected to the dust discharge pipe.

[0016] Furthermore, the dust cleaning component includes a connecting pipe, a first through hole, a nozzle, a scraper, a second transverse shaft, a third bevel gear, a fourth bevel gear, an annular cover, a straight hole, a fifth bevel gear, a sixth bevel gear, a second straight shaft and a first impeller. The connecting pipe is fixedly installed at the air hole opened at the upper end of the outer cylinder. The transverse part of the connecting pipe is rotatably connected to the second straight shaft through a bearing. The part of the second straight shaft located in the connecting pipe is fixedly installed with the first impeller. The sixth bevel gear is fixedly installed on the second straight shaft. The sixth bevel gear is meshed with the fifth bevel gear. The second transverse shaft is fixedly installed in the fifth bevel gear. The second transverse shaft is rotatably connected to the filter box through a bearing. The end of the second transverse shaft located in the filter box is connected to the The third bevel gear is fixedly connected, and the third bevel gear is meshed with the fourth bevel gear. The center of the filter plate is rotatably connected to the third straight shaft through a bearing. The fourth bevel gear is fixedly installed on the upper end of the third straight shaft. The end of the connecting pipe located in the filter box is fixedly connected with an annular cover, and the inner wall of the annular cover is fitted and slidably connected with the outer wall of the third straight shaft. A straight hole is opened in the third straight shaft, and a first through hole is opened at the upper and lower ends of the straight hole. The first through hole at the upper end is located on the inner wall of the annular cover. The third straight shaft is fixedly connected with a nozzle pipe that communicates with the first through hole at the lower end. The nozzle pipe is located at the top of the filter plate, and the air outlet of the nozzle pipe faces downward. A scraper is fixedly connected to the bottom of the third straight shaft, and the top of the scraper is fitted and slidably connected with the bottom of the filter plate.

[0017] Furthermore, the scraper and the nozzle are located on both sides of the third straight axis.

[0018] Furthermore, the follow-up air outlet assembly includes an air outlet pipe, an air collecting pipe, a second impeller, a fourth straight shaft, an inclined hole and a rotating cover. The air outlet pipe is fixedly installed on the top of the filter box, and the air outlet pipes are fixedly connected to the air collecting pipe. The transverse part of the air collecting pipe is rotatably connected to the fourth straight shaft through a bearing. The upper end of the fourth straight shaft is fixedly connected to the second impeller, and the second impeller is located in the transverse part of the air collecting pipe. The bottom of the fourth straight shaft is fixedly connected to the rotating cover, and the rotating cover is rotatably connected to the output end of the air collecting pipe. The rotating cover is provided with inclined holes at equal intervals along the circumferential direction.

[0019] Furthermore, the fourth straight axis is coaxially arranged with the tank body.

[0020] Furthermore, the inclined hole is arranged obliquely downward.

[0021] Furthermore, the chemical formula for exhaust gas purification in the tank is: .

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: When cleaning the dust in the left filter component, the adjustable air guiding component conducts the air inlet pipe with the right horizontal pipe and the left follower air outlet component. Part of the gas enters the right filter component for normal filtration, and part of the gas enters the left dust cleaning component for cleaning. After the left filter component is cleaned, the adjustable air guiding component conducts the air inlet pipe with the right horizontal pipe and all the follower air outlet components are not conducted, and all the gas enters the right filter component for filtration. When cleaning the dust in the right filter component, the adjustable air guiding component conducts the air inlet pipe with the left horizontal pipe and the right follower air outlet component. Part of the gas enters the left filter component for normal filtration, and part of the gas enters the right dust cleaning component for cleaning. After the right filter component is cleaned, the adjustable air guiding component conducts the air inlet pipe with the left horizontal pipe and all the follower air outlet components are not conducted, and all the gas enters the left filter component for filtration, realizing continuous cleaning and continuous filtration without shutdown treatment. The adjustment method is simple, more energy-saving and environmentally friendly. At the same time, the follower air outlet component sprays dispersedly into the tank body, improving the gas dispersion degree and facilitating pickling. In addition, the flipping type packing support component can drive the packing to flip, changing the flow path of the gas passing through the packing, further improving the gas dispersion degree and facilitating the full contact between the gas and the lye. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is a three-dimensional view of an energy-saving and environmentally friendly waste gas purification device for papermaking according to the present invention Figure 1 ;

[0025] Figure 2 is a front view of an energy-saving and environmentally friendly waste gas purification device for papermaking according to the present invention;

[0026] Figure 3 is a three-dimensional view of an energy-saving and environmentally friendly waste gas purification device for papermaking according to the present invention Figure 2 ;

[0027] Figure 4 is a three-dimensional view of an energy-saving and environmentally friendly waste gas purification device for papermaking according to the present invention Figure 3 ;

[0028] Figure 5 is a three-dimensional view with a part cut along the A-A direction of Figure 2 ;

[0029] Figure 6 Partial sectional view of the gas collecting connection structure of the rotating cover

[0030] Figure 7 Isometric view of the self-cleaning filter assembly Figure 1 ;

[0031] Figure 8 Right view of the self-cleaning filter assembly

[0032] Figure 9 Is a sectional view along the B-B direction of Figure 8 ;

[0033] Figure 10 Is Figure 9 Enlarged view of the structure at C of

[0034] Figure 11 Is Figure 9 Enlarged view of the structure at D of

[0035] The reference numerals in the figure respectively represent:

[0036] 1. Tank body; 2. Tipping type packing support assembly; 21. Motor; 22. First horizontal shaft; 23. First bevel gear; 24. Inclined guide plate; 25. Hollow plate; 26. Second bevel gear; 27. First straight shaft; 3. Liquid adding assembly; 31. First straight pipe; 32. First horizontal pipe; 33. Liquid inlet pipe; 34. Liquid pump; 35. Two-in-one-out control valve; 36. Two-out-one-in control valve; 37. Drain pipe; 38. Liquid outlet pipe; 39. Annular spray pipe; 4. Self-cleaning filter assembly; 41. Filter assembly; 411. Filter box; 412. Ash discharge pipe; 413. Control valve; 414. Filter plate; 42. Ash cleaning assembly; 421. Connecting pipe; 422. First through hole; 423. Spray pipe; 424. Scraper; 425. Second horizontal shaft; 426. Third bevel gear; 427. Fourth bevel gear; 428. Annular cover; 429. Straight hole; 4210. Fifth bevel gear; 4211. Sixth bevel gear; 4212. Second straight shaft; 4213. First impeller; 4214. Third straight shaft; 43. Follow-up type air outlet assembly; 431. Air outlet pipe; 432. Air collecting pipe; 433. Second impeller; 434. Fourth straight shaft; 435. Oblique hole; 436. Rotating cover; 44. Horizontal pipe; 45. Air inlet pipe; 46. Adjustable air guiding assembly; 461. Second motor; 462. Outer cylinder; 463. Valve core; 464. First L-shaped hole; 465. Second through hole; 466. Second L-shaped hole; 5. pH meter; 6. Liquid level sensor. Detailed implementation method

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0038] In the following description, the "left", "right", "front", "rear", "upper", and "lower" mentioned are oriented in the perspective direction of the front view.

[0039] Example 1. Please refer to Figures 1 - 11 , an energy-saving and environmental protection waste gas purification device for papermaking, including a tank body 1;

[0040] Inside the tank body 1, there is a flip-type packing support assembly 2 fixedly connected for packing support and turning;

[0041] The tank body 1 is fixedly connected with a liquid adding assembly 3 for alkali liquor circulating spraying, alkali liquor feeding, and waste liquor discharging. The liquid spraying end of the liquid adding assembly 3 is located at the top of the packing on the flip-type packing support assembly 2;

[0042] The lower end of the tank body 1 is fixedly connected with a self-cleaning filter assembly 4;

[0043] The self-cleaning filter assembly 4 includes a filter assembly 41, a dust cleaning assembly 42, a follow-up air outlet assembly 43, a horizontal pipe 44, an air inlet pipe 45, and an adjustable air guiding assembly 46. The bottom of the adjustable air guiding assembly 46 is fixedly connected to the top of the air inlet pipe 45. One ends of two groups of horizontal pipes 44 are symmetrically and fixedly installed at the air holes opened at the lower end of the horizontal pipe 44. One ends of two groups of dust cleaning assemblies 42 are symmetrically and fixedly installed at the air holes opened at the upper end of the adjustable air guiding assembly 46. The other end of the horizontal pipe 44 is fixedly connected to the filter assembly 41 in a communicating manner. The air outlet end of the dust cleaning assembly 42 is located above the filtering part of the filter assembly 41. The top of the filter assembly 41 is fixedly connected to the follow-up air outlet assembly 43. The follow-up air outlet assembly 43 is fixedly connected to the tank body 1. The air outlet end of the follow-up air outlet assembly 43 is located inside the tank body 1. When cleaning the dust in the left filter assembly 41, the adjustable air guiding assembly 46 conducts the air inlet pipe 45 to the right horizontal pipe 44 and the left follow-up air outlet assembly 43. A part of the gas enters the right filter assembly 41 for normal filtering, and a part of the gas enters the left dust cleaning assembly 42 for cleaning. After the left filter assembly 41 is cleaned, the adjustable air guiding assembly 46 conducts the air inlet pipe 45 to the right horizontal pipe 44 and all the follow-up air outlet assemblies 43 are not conducted, and all the gas enters the right filter assembly 41 for filtering. When cleaning the dust in the right filter assembly 41, the adjustable air guiding assembly 46 conducts the air inlet pipe 45 to the left horizontal pipe 44 and the right follow-up air outlet assembly 43. A part of the gas enters the left filter assembly 41 for normal filtering, and a part of the gas enters the right dust cleaning assembly 42 for cleaning. After the right filter assembly 41 is cleaned, the adjustable air guiding assembly 46 conducts the air inlet pipe 45 to the left horizontal pipe 44 and all the follow-up air outlet assemblies 43 are not conducted, and all the gas enters the left filter assembly 41 for filtering.

[0044] When cleaning the dust in the left filtering component 41, the adjustable air guiding component 46 conducts the air inlet pipe 45 with the right horizontal pipe 44 and the left follower air outlet component 43. Part of the gas enters the right filtering component 41 for normal filtering, and part of the gas enters the left dust cleaning component 42 for cleaning. After the left filtering component 41 is cleaned, the adjustable air guiding component 46 conducts the air inlet pipe 45 with the right horizontal pipe 44, and all the follower air outlet components 43 are not conducted. All the gas enters the right filtering component 41 for filtering. When cleaning the dust in the right filtering component 41, the adjustable air guiding component 46 conducts the air inlet pipe 45 with the left horizontal pipe 44 and the right follower air outlet component 43. Part of the gas enters the left filtering component 41 for normal filtering, and part of the gas enters the right dust cleaning component 42 for cleaning. After the right filtering component 41 is cleaned, the adjustable air guiding component 46 conducts the air inlet pipe 45 with the left horizontal pipe 44, and all the follower air outlet components 43 are not conducted. All the gas enters the left filtering component 41 for filtering, realizing continuous cleaning and continuous filtering without stopping the machine for processing. The adjustment method is simple, more energy-saving and environmentally friendly. At the same time, the follower air outlet component 43 sprays dispersedly into the tank body 1, improving the gas dispersion degree, which is beneficial to pickling. In addition, the flipping type packing support component 2 can drive the packing to flip, changing the flow path of the gas passing through the packing, further improving the gas dispersion degree and facilitating the full contact between the gas and the lye.

[0045] The adjustable air guiding component 46 includes a second motor 461, an outer cylinder 462, a valve core 463, a first L-shaped hole 464, a second through hole 465 and a second L-shaped hole 466. The bottom of the outer cylinder 462 is fixedly connected to the top of the air inlet pipe 45. The second motor 461 is fixedly installed on the top of the outer cylinder 462. The output end of the second motor 461 is fixedly connected with a valve core 463. The outer wall of the valve core 463 is in sliding fit with the inner wall of the outer cylinder 462. The lower end of the valve core 463 is provided with a first L-shaped hole 464. The valve core 463 is provided with a second through hole 465 at the turning point of the first L-shaped hole 464, and the included angle between the second through hole 465 and the horizontal part of the first L-shaped hole 464 in the horizontal plane direction is ninety degrees. The valve core 463 is fixedly connected with a second L-shaped hole 466 at the top of the turning point of the first L-shaped hole 464, and the air outlet end of the second L-shaped hole 466 and the air outlet end of the first L-shaped hole 464 are located on the left and right sides of the valve core 463. One ends of the two groups of horizontal pipes 44 are symmetrically and fixedly installed at the air holes opened at the lower end of the outer cylinder 462, and the air outlet ends of the second through hole 465 and the first L-shaped hole 464 are at the same horizontal end as the horizontal pipe 44. One ends of the two groups of dust cleaning components 42 are symmetrically and fixedly installed at the air holes opened at the upper end of the outer cylinder 462. The second L-shaped hole 466 and the air inlet end of the connecting pipe 421 are on the same horizontal plane.

[0046] The air inlet pipe 45 is fixedly connected to the output end of the gas collecting equipment in the workshop;

[0047] The filter component 41 includes a filter box 411 and a filter plate 414. The filter plate 414 is fixedly installed inside the filter box 411. The horizontal pipe 44 is fixedly connected to the filter box 411 and is arranged below the filter plate 414. The air outlet end of the follower air outlet component 43 is located at the top of the filter plate 414, and the ash scraping end of the follower air outlet component 43 is located at the bottom of the filter plate 414.

[0048] A dust discharge pipe 412 is fixedly connected to the bottom of the filter box 411, and a control valve 413 is fixedly connected to the dust discharge pipe 412.

[0049] The ash cleaning component 42 includes a connecting pipe 421, a first through hole 422, a spray pipe 423, a scraper 424, a second horizontal shaft 425, a third bevel gear 426, a fourth bevel gear 427, an annular cover 428, a straight hole 429, a fifth bevel gear 4210, a sixth bevel gear 4211, a second straight shaft 4212 and a first impeller 4213. The connecting pipe 421 is fixedly installed at the air hole opened at the upper end of the outer cylinder 462. The horizontal part of the connecting pipe 421 is rotationally connected to the second straight shaft 4212 through a bearing. A first impeller 4213 is fixedly installed on the part of the second straight shaft 4212 located inside the connecting pipe 421. The sixth bevel gear 4211 is fixedly installed on the second straight shaft 4212, and the sixth bevel gear 4211 is meshed and connected with the fifth bevel gear 4210. The second horizontal shaft 425 is fixedly installed inside the fifth bevel gear 4210. The second horizontal shaft 425 is rotationally connected to the filter box 411 through a bearing. The end of the second horizontal shaft 425 located inside the filter box 411 is fixedly connected to the third bevel gear 426. The third bevel gear 426 is meshed and connected with the fourth bevel gear 427. The center of the filter plate 414 is rotationally connected to the third straight shaft 4214 through a bearing. The fourth bevel gear 427 is fixedly installed at the upper end of the third straight shaft 4214. The end of the connecting pipe 421 located inside the filter box 411 is fixedly connected to an annular cover 428. The inner wall of the annular cover 428 is in sliding fit with the outer wall of the third straight shaft 4214. A straight hole 429 is opened in the third straight shaft 4214. First through holes 422 are opened at both the upper and lower ends of the straight hole 429. The upper first through hole 422 is located at the inner wall of the annular cover 428. The third straight shaft 4214 is fixedly connected to a spray pipe 423 communicated with the lower first through hole 422. The spray pipe 423 is located at the top of the filter plate 414, and the air outlet holes of the spray pipe 423 face downward. A scraper 424 is fixedly connected to the bottom of the third straight shaft 4214, and the top of the scraper 424 is in sliding fit with the bottom of the filter plate 414.

[0050] The scraper 424 and the spray pipe 423 are located on both sides of the third straight shaft 4214.

[0051] The follower type air outlet assembly 43 includes an air outlet pipe 431, a collector pipe 432, a second impeller 433, a fourth straight shaft 434, inclined holes 435 and a rotating cover 436. The air outlet pipe 431 is fixedly installed on the top of the filter box 411. The air outlet pipe 431 is fixedly connected to the collector pipe 432. The horizontal part of the collector pipe 432 is rotationally connected to the fourth straight shaft 434 through a bearing. The upper end of the fourth straight shaft 434 is fixedly connected with a second impeller 433, and the second impeller 433 is located inside the horizontal part of the collector pipe 432. The bottom of the fourth straight shaft 434 is fixedly connected to the rotating cover 436. The rotating cover 436 is rotationally connected to the output end of the collector pipe 432. The rotating cover 436 is provided with inclined holes 435 at equal intervals along the circumferential direction.

[0052] The fourth straight shaft 434 is coaxially arranged with the tank body 1;

[0053] The inclined holes 435 are arranged obliquely downward.

[0054] When cleaning the dust in the filter plate 414 of the left filter assembly 41, the second motor 461 of the adjustable air guiding assembly 46 drives the valve core 463 to rotate. The valve core 463 drives the first L-shaped hole 464 and the second L-shaped hole 466 to rotate. The first L-shaped hole 464 conducts the air inlet pipe 45 to the right horizontal pipe 44. The first L-shaped hole 464 and the second L-shaped hole 466 cooperate to conduct the air inlet pipe 45 to the left follower type air outlet assembly 43. A part of the gas in the air inlet pipe 45 enters the right horizontal pipe 44 through the first L-shaped hole 464, enters the right filter box 411, and then passes through the filter plate 414 for normal filtration. A part of the gas in the air inlet pipe 45 enters the connecting pipe 421 of the left dust cleaning assembly 42 through the first L-shaped hole 464 and the second L-shaped hole 466, then enters the annular cover 428, then enters the straight hole 429 through the upper first through hole 422, and then enters the spray pipe 423 through the lower first through hole 422 and sprays downward. At the same time, the gas in the connecting pipe 421 drives the first impeller 4213 to rotate. The first impeller 4213 drives the second straight shaft 4212 to rotate. The second straight shaft 4212 drives the sixth bevel gear 4211 to rotate. The sixth bevel gear 4211 drives the fifth bevel gear 4210 to rotate. The fifth bevel gear 4210 drives the second horizontal shaft 425 to rotate. The second horizontal shaft 425 drives the third straight shaft 4214 to rotate. The third straight shaft 4214 drives the spray pipe 423 and the scraper 424 to rotate. The scraper 424 rotates along the left filter plate 414 to scrape the dust at the bottom of the left filter plate 414. At the same time, the spray pipe 423 flushes the dust in the filter holes of the left filter plate 414, which is beneficial to cleaning the dust in the left filter plate 414.

[0055] After the filter plate 414 on the left side is cleaned, the second motor 461 of the adjustable air guide assembly 46 drives the valve core 463 to continue rotating by ninety degrees. The valve core 463 drives the second through hole 465 to face the horizontal pipe 44 on the right side. The first L-shaped hole 464 and the second through hole 465 conduct the air inlet pipe 45 and the horizontal pipe 44 on the right side. The solid part of the valve core 463 blocks all the follower type air outlet assemblies 43, and all the follower type air outlet assemblies 43 are not conducting. All the gas in the air inlet pipe 45 enters the horizontal pipe 44 on the right side through the first L-shaped hole 464 and the second through hole 465, enters the filter box 411 on the right side, and is filtered inside the filter plate 414 on the right side.

[0056] When the filter plate 414 on the right side is filtering normally, after the filter plate 414 on the left side is cleaned, it doesn't need to be cleaned continuously.

[0057] When cleaning the dust on the filter plate 414 in the filter assembly 41 on the right side, the second motor 461 of the adjustable air guide assembly 46 drives the valve core 463 to continue rotating by ninety degrees. The valve core 463 drives the first L-shaped hole 464 and the second L-shaped hole 466 to rotate. The first L-shaped hole 464 conducts the air inlet pipe 45 and the horizontal pipe 44 on the left side. The first L-shaped hole 464 and the second L-shaped hole 466 cooperate to conduct the air inlet pipe 45 and the follower type air outlet assembly 43 on the right side. A part of the gas in the air inlet pipe 45 enters the horizontal pipe 44 on the left side through the first L-shaped hole 464, enters the filter box 411 on the left side, and is normally filtered through the filter plate 414 on the left side. A part of the gas in the air inlet pipe 45 enters the connecting pipe 421 of the dust cleaning assembly 42 on the right side through the first L-shaped hole 464 and the second L-shaped hole 466, then enters the annular cover 428, then enters the straight hole 429 through the upper first through hole 422, and then enters the spray pipe 423 through the lower first through hole 422 and sprays downward. At the same time, the gas in the connecting pipe 421 drives the first impeller 4213 to rotate. The first impeller 4213 drives the second straight shaft 4212 to rotate. The second straight shaft 4212 drives the sixth bevel gear 4211 to rotate. The sixth bevel gear 4211 drives the fifth bevel gear 4210 to rotate. The fifth bevel gear 4210 drives the second horizontal shaft 425 to rotate. The second horizontal shaft 425 drives the third straight shaft 4214 to rotate. The third straight shaft 4214 drives the spray pipe 423 and the scraper 424 to rotate. The scraper 424 rotates along the filter plate 414 on the right side to scrape the dust at the bottom of the filter plate 414. At the same time, the spray pipe 423 flushes the dust in the filter holes of the filter plate 414 on the right side, which is beneficial to cleaning the dust in the filter plate 414 on the right side.

[0058] After the cleaning inside the filtering component 41 on the right side, the second motor 461 of the adjustable air guiding component 46 drives the valve core 463 to continue rotating by ninety degrees. The valve core 463 drives the second through hole 465 to face the horizontal pipe 44 on the left side. The first L-shaped hole 464 and the second through hole 465 conduct the air inlet pipe 45 and the horizontal pipe 44 on the left side. The solid part of the valve core 463 blocks all the follow-up air outlet components 43, and all the follow-up air outlet components 43 are not conducted. All the gas in the air inlet pipe 45 enters the horizontal pipe 44 on the left side through the first L-shaped hole 464 and the second through hole 465, enters the filtering box 411 on the left side, and is filtered inside the filter plate 414 on the left side. After the filter plate 414 on the left side is cleaned when the filter plate 414 on the right side is filtering normally, there is no need to keep cleaning it all the time.

[0059] Continuous cleaning and continuous filtering are realized, and there is no need to stop the machine for processing.

[0060] The gas filtered by the filter plate 414 enters the outlet pipe 431 of the follow-up air outlet component 43 through the filter plate 414, then enters the gas collecting pipe 432, then enters the rotating cover 436, and sprays out from the inclined hole 435. The gas in the gas collecting pipe 432 drives the fourth straight shaft 434 to rotate through the second impeller 433. The fourth straight shaft 434 drives the rotating cover 436 to rotate along the gas collecting pipe 432. The rotating cover 436 drives the inclined hole 435 to rotate and spray gas. The inclined hole 435 dispersedly sprays the gas filtered by the filter plate 414 into the tank body 1, improving the gas dispersion degree and being beneficial to pickling.

[0061] The flipping type packing support component 2 includes a motor 21, a first horizontal shaft 22, a first bevel gear 23, an inclined guide plate 24, a hollow plate 25, a second bevel gear 26 and a first straight shaft 27. The motor 21 is fixedly installed on the outer wall of the tank body 1. The first horizontal shaft 22 is fixedly installed at the output end of the motor 21. The first horizontal shaft 22 is fixedly installed in the through hole of the first bevel gear 23. The first bevel gear 23 is meshed and connected with the second bevel gear 26. The first straight shaft 27 is fixedly installed in the installation hole opened by the second bevel gear 26. Two groups of hollow plates 25 are fixedly installed at the upper and lower ends of the first straight shaft 27, and the hollow plate 25 is rotationally connected with the inner wall of the tank body 1 through a bearing. A plurality of groups of inclined guide plates 24 are fixedly connected above the hollow plate 25 of the tank body 1, and the inclined guide plates 24 are arranged along the circumferential direction on the inner wall of the tank body 1.

[0062] When the filtered gas enters the acid mist cleaning in the tank body 1, the motor 21 of the flipping type packing support assembly 2 drives the first horizontal shaft 22 to rotate, the first horizontal shaft 22 drives the first bevel gear 23 to rotate, the first bevel gear 23 drives the second bevel gear 26 to rotate, the second bevel gear 26 drives the first straight shaft 27 to rotate, the first straight shaft 27 drives the hollow plate 25 to rotate, and the hollow plate 25 drives the packing on the hollow plate 25 to rotate. Under the guiding action of the inclined guide plate 24, the packing on the hollow plate 25 rotates and flips, changing the flow path of the gas passing through the packing, further improving the gas dispersion degree, and facilitating the full contact between the gas and the alkali solution.

[0063] The liquid adding assembly 3 includes a first straight pipe 31, a first horizontal pipe 32, a liquid inlet pipe 33, a liquid pump 34, a two-in-one-out control valve 35, a two-out-one-in control valve 36, a liquid discharge pipe 37, a liquid outlet pipe 38 and an annular spray pipe 39. The upper and lower ends of the liquid outlet pipe 38 are respectively installed at the bottom of the tank body 1 and the input end of the two-out-one-in control valve 36. One group of output ends of the two-out-one-in control valve 36 is fixedly connected to the liquid discharge pipe 37, and the other group of output ends of the two-out-one-in control valve 36 is fixedly connected to one group of input ends of the two-in-one-out control valve 35 through a pipeline. The other group of input ends of the two-in-one-out control valve 35 is fixedly connected to the liquid inlet pipe 33. The output end of the two-in-one-out control valve 35 is fixedly connected to the input end of the liquid pump 34 through a pipeline. The output end of the liquid pump 34 is fixedly connected to the first straight pipe 31. Two groups of first horizontal pipes 32 are fixedly connected to the first straight pipe 31 in a communicating manner. The part of the first horizontal pipe 32 located inside the tank body 1 is fixedly connected with an annular spray pipe 39, and the annular spray pipe 39 is located above the packing on the hollow plate 25.

[0064] The liquid discharge pipe 37 is connected to the waste liquid collection pipe, and the liquid inlet pipe 33 is connected to the alkali solution storage device.

[0065] A pH meter 5 for acidity and alkalinity detection and a liquid level sensor 6 for liquid level detection are installed at the lower end of the inner wall of the tank body 1;

[0066] During pickling, the two-out-one-in control valve 36 conducts to the two-in-one-out control valve 35, and the two-in-one-out control valve 35 conducts to the two-out-one-in control valve 36. The liquid pump 34 pumps the alkali solution in the tank body 1 into the first straight pipe 31 through the liquid outlet pipe 38, the two-out-one-in control valve 36 and the two-in-one-out control valve 35, then into the first horizontal pipe 32, and finally sprays out from the annular spray pipe 39 to realize the circulating pickling of the alkali solution.

[0067] When the pH meter 5 detects that the pH value is lower than the set requirement, the two-out-one-in control valve 36 conducts to the drain pipe 37, and the alkali liquid in the tank body 1 is discharged from the drain pipe 37 under the action of its own gravity. When the liquid level sensor 6 detects that the liquid level is lower than the set value, the two-out-one-in control valve 36 conducts to the two-in-one-out control valve 35, and the two-in-one-out control valve 35 conducts to the liquid inlet pipe 33. The liquid pump 34 pumps the alkali liquid in the alkali liquid storage device into the first straight pipe 31 through the liquid inlet pipe 33, then into the first horizontal pipe 32, and finally into the annular spray pipe 39 for spraying. When a certain amount of alkali liquid is added to the tank body 1, the alkali liquid replacement is realized.

[0068] The chemical formula for purifying the waste gas in the tank is: 。

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving and environmental-friendly waste gas purification device for papermaking, comprising a tank body (1), characterized in that: A tumbling type packing support assembly (2) for packing support and tumbling is fixedly connected inside the tank body (1); The tank body (1) is fixedly connected with a liquid adding assembly (3) for alkali liquor circulating spraying, alkali liquor feeding and waste liquor discharging, and the liquid spraying end of the liquid adding assembly (3) is located at the top of the packing on the tumbling type packing support assembly (2); The lower end of the tank body (1) is fixedly connected with a self-cleaning type filtering assembly (4); The self-cleaning type filtering assembly (4) includes a filtering assembly (41), a dust cleaning assembly (42), a follower type air outlet assembly (43), a cross pipe (44), an air inlet pipe (45) and an adjustable air guiding assembly (46). The bottom of the adjustable air guiding assembly (46) is fixedly connected with the top of the air inlet pipe (45). One ends of two groups of cross pipes (44) are symmetrically and fixedly installed at the air holes opened at the lower end of the cross pipe (44). One ends of two groups of dust cleaning assemblies (42) are symmetrically and fixedly installed at the air holes opened at the upper end of the adjustable air guiding assembly (46). The other end of the cross pipe (44) is fixedly connected with the filtering assembly (41) in a communicating manner. The air outlet end of the dust cleaning assembly (42) is located above the filtering part of the filtering assembly (41). The tops of the filtering assemblies (41) are fixedly connected with the follower type air outlet assemblies (43). The follower type air outlet assemblies (43) are fixedly connected with the tank body (1). The air outlet ends of the follower type air outlet assemblies (43) are located inside the tank body (1). When cleaning the dust in the left filtering assembly (41), the adjustable air guiding assembly (46) conducts the air inlet pipe (45) with the right cross pipe (44) and the left follower type air outlet assembly (43). Part of the gas enters the right filtering assembly (41) for normal filtering, and part of the gas enters the left dust cleaning assembly (42) for cleaning. After the left filtering assembly (41) is cleaned, the adjustable air guiding assembly (46) conducts the air inlet pipe (45) with the right cross pipe (44), and all the follower type air outlet assemblies (43) are not conducted. All the gas enters the right filtering assembly (41) for filtering. When cleaning the dust in the right filtering assembly (41), the adjustable air guiding assembly (46) conducts the air inlet pipe (45) with the left cross pipe (44) and the right follower type air outlet assembly (43). Part of the gas enters the left filtering assembly (41) for normal filtering, and part of the gas enters the right dust cleaning assembly (42) for cleaning. After the right filtering assembly (41) is cleaned, the adjustable air guiding assembly (46) conducts the air inlet pipe (45) with the left cross pipe (44), and all the follower type air outlet assemblies (43) are not conducted. All the gas enters the left filtering assembly (41) for filtering.

2. The energy-saving and environmental-protection waste gas purification equipment for papermaking according to claim 1, characterized in that, The adjustable air guiding assembly (46) includes a second motor (461), an outer cylinder (462), a valve core (463), a first L-shaped hole (464), a second through hole (465), and a second L-shaped hole (466). The bottom of the outer cylinder (462) is fixedly connected to the top of the intake pipe (45). The second motor (461) is fixedly installed at the top of the outer cylinder (462). The output end of the second motor (461) is fixedly connected to a valve core (463). The outer wall of the valve core (463) is in sliding fit with the inner wall of the outer cylinder (462). A first L-shaped hole (464) is formed at the lower end of the valve core (463). A second through hole (465) is formed at the turning point of the first L-shaped hole (464) of the valve core (463), and the included angle between the second through hole (465) and the horizontal part of the first L-shaped hole (464) in the horizontal plane direction is ninety degrees. A second L-shaped hole (466) is fixedly connected to the top of the turning point of the first L-shaped hole (464) of the valve core (463), and the air outlet ends of the second L-shaped hole (466) and the first L-shaped hole (464) are located on the left and right sides of the valve core (463). One ends of two groups of horizontal pipes (44) are symmetrically and fixedly installed at the air holes formed at the lower end of the outer cylinder (462), and the air outlet ends of the second through hole (465) and the first L-shaped hole (464) are at the same horizontal end as the horizontal pipes (44). One ends of two groups of dust cleaning assemblies (42) are symmetrically and fixedly installed at the air holes formed at the upper end of the outer cylinder (462), and the second L-shaped hole (466) and the intake end of the connecting pipe (421) are on the same horizontal plane.

3. The energy-saving and environmental-friendly waste gas purification equipment for papermaking according to claim 2, characterized in that, The filtering assembly (41) includes a filtering box (411) and a filter plate (414). The filter plate (414) is fixedly installed inside the filtering box (411). The horizontal pipe (44) is fixedly connected to the filtering box (411), and the horizontal pipe (44) is arranged below the filter plate (414). The air outlet end of the follow-up air outlet assembly (43) is located at the top of the filter plate (414), and the ash scraping end of the follow-up air outlet assembly (43) is located at the bottom of the filter plate (414).

4. The energy-saving and environmental-friendly waste gas purification equipment for papermaking according to claim 3, characterized in that, A dust discharge pipe (412) is fixedly connected to the bottom of the filtering box (411), and a control valve (413) is fixedly connected to the dust discharge pipe (412).

5. The energy-saving and environmental-friendly waste gas purification equipment for papermaking according to claim 4, wherein, The dust cleaning component (42) includes a connecting pipe (421), a first through hole (422), a spray pipe (423), a scraper (424), a second horizontal shaft (425), a third bevel gear (426), a fourth bevel gear (427), an annular cover (428), a straight hole (429), a fifth bevel gear (4210), a sixth bevel gear (4211), a second straight shaft (4212) and a first impeller (4213). The connecting pipe (421) is fixedly installed at the air hole opened at the upper end of the outer cylinder (462). The horizontal part of the connecting pipe (421) is rotatably connected to the second straight shaft (4212) through a bearing. A first impeller (4213) is fixedly installed at the part of the second straight shaft (4212) located inside the connecting pipe (421). The sixth bevel gear (4211) is fixedly installed on the second straight shaft (4212). The sixth bevel gear (4211) is meshed and connected with the fifth bevel gear (4210). The second horizontal shaft (425) is fixedly installed inside the fifth bevel gear (4210). The second horizontal shaft (425) is rotatably connected to the filter box (411) through a bearing. The end part of the second horizontal shaft (425) located inside the filter box (411) is fixedly connected to the third bevel gear (426). The third bevel gear (426) is meshed and connected with the fourth bevel gear (427). The center of the filter plate (414) is rotatably connected to the third straight shaft (4214) through a bearing. The fourth bevel gear (427) is fixedly installed at the upper end of the third straight shaft (4214). The end part of the connecting pipe (421) located inside the filter box (411) is fixedly connected to the annular cover (428). The inner wall of the annular cover (428) is in sliding fit with the outer wall of the third straight shaft (4214). A straight hole (429) is opened inside the third straight shaft (4214). First through holes (422) are opened at both the upper and lower ends of the straight hole (429). The first through hole (422) at the upper end is located at the inner wall of the annular cover (428). The third straight shaft (4214) is fixedly connected to a spray pipe (423) communicated with the first through hole (422) at the lower end. The spray pipe (423) is located above the filter plate (414), and the air outlet hole of the spray pipe (423) faces downward. A scraper (424) is fixedly connected to the bottom of the third straight shaft (4214), and the top of the scraper (424) is in sliding fit with the bottom of the filter plate (414).

6. The energy-saving and environmental-friendly waste gas purification equipment for papermaking according to claim 5, characterized in that, The scraper (424) and the spray pipe (423) are located on both sides of the third straight shaft (4214).

7. The energy-saving and environmental-friendly waste gas purification equipment for papermaking according to claim 6, characterized in that, The follower air outlet assembly (43) includes an air outlet pipe (431), a gas collecting pipe (432), a second impeller (433), a fourth straight shaft (434), an inclined hole (435) and a rotating cover (436). The air outlet pipe (431) is fixedly installed on the top of the filter box (411), and the air outlet pipe (431) is fixedly connected to the gas collecting pipe (432). The transverse part of the gas collecting pipe (432) is rotatably connected to the fourth straight shaft (434) through a bearing. The upper end of the fourth straight shaft (434) is fixedly connected with a second impeller (433), and the second impeller (433) is located inside the transverse part of the gas collecting pipe (432). The bottom of the fourth straight shaft (434) is fixedly connected to the rotating cover (436), and the rotating cover (436) is rotatably connected to the output end of the gas collecting pipe (432). The rotating cover (436) is provided with inclined holes (435) at equal intervals along the circumferential direction.

8. The energy-saving and environmental-friendly waste gas purification equipment for papermaking according to claim 7, characterized in that, The fourth straight shaft (434) is coaxially arranged with the tank body (1).

9. The energy-saving and environmental-protection waste gas purification equipment for papermaking according to claim 7, characterized in that, The inclined hole (435) is arranged obliquely downward.

10. The energy-saving and environmental-friendly waste gas purification equipment for papermaking according to any one of claims 1-9, characterized in that, The chemical formula for waste gas purification inside the tank body (1) is: .

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