A phosphorus removal device and process for preparing mesoporous activated carbon.

Abstract

This invention discloses a phosphorus removal device for preparing mesoporous activated carbon, comprising a rinsing device and a sieving device. The rinsing device includes a feed hopper, a first tube, a water inlet hopper, a second tube, a third tube, a washing screw, and a driving mechanism. The first tube is connected to the feed hopper, the second tube is connected to the water inlet hopper, and the first and second tubes are connected to the third tube. The upper end of the third tube is provided with a feeding box, which has an inclined first discharge port. The lower end of the third tube is provided with a recovery box. The washing screw is disposed within the third tube, and the driving mechanism drives the washing screw to rotate. The washing screw has spirally arranged conveying blades, and the conveying blades have first sieve holes. Compared with the prior art, this invention can remove phosphate particles or powder from activated carbon granules after activation treatment, thereby effectively removing phosphate particles from the activated carbon and effectively improving product quality.

Description

Technical Field

[0001] This invention relates to the field of activated carbon preparation technology, specifically to a phosphorus removal device and process for preparing mesoporous activated carbon. Background Technology

[0002] Activated carbon is a porous adsorbent material initially used in medicine and food, and its applications have since expanded to purification, recycling, and many other fields. The earliest recorded use of activated carbon in my country dates back to the Ming Dynasty, where it was used as a medicine to treat diarrhea and gastrointestinal diseases. Later, the large-scale production of activated carbon fibers led to its rapid development in industry, food, and environmental protection.

[0003] The raw materials required for activated carbon preparation include plant-based materials such as wood and coconut shells, as well as carbonaceous minerals such as petroleum residues and petroleum asphalt. Production methods can be either chemical or physical. Traditional chemical preparation methods, which use zinc chloride as an activating agent, have been phased out due to severe environmental pollution. Using phosphoric acid as an activating agent to prepare low-ash activated carbon has become an important trend in the industry.

[0004] The main raw materials used in the phosphoric acid process for preparing mesoporous activated carbon include biomass such as wood flour, phosphoric acid, and hydrochloric acid. First, the wood flour and other biomass are screened to remove hard impurities. Then, the screened wood flour is impregnated in phosphoric acid. The concentration of phosphoric acid needs to be optimized experimentally based on the specific type of wood flour and the resin content. Given a specific type of wood flour, a phosphoric acid concentration gradient is established, and the wood flour is allowed to fully absorb the phosphoric acid solution at a certain impregnation ratio. The resulting product is conveyed into a rotary activation furnace for carbon activation. Phosphoric acid is recovered from the activated material, reducing the phosphoric acid content in the solution to below 5 Baume degrees. After washing with clean water, the product is dried and packaged.

[0005] During the above process, some fine phosphate particles or precipitates may be formed. If these particles undergo further processing (such as drying or grinding), they may appear similar to "phosphorus powder," thus affecting product quality. Therefore, it is necessary to remove the phosphate particles or precipitates generated during the above process in a timely manner.

[0006] In view of this, the applicant conducted in-depth research on the above-mentioned issues, which led to this case. Summary of the Invention

[0007] The main objective of this invention is to provide a phosphorus removal device and process for preparing mesoporous activated carbon, which can effectively solve the above-mentioned technical problems.

[0008] To achieve the above objectives, the solution of the present invention is:

[0009] A phosphorus removal device for preparing mesoporous activated carbon includes a rinsing device and a screening device. The rinsing device includes a feed hopper, a first tube, a water inlet hopper, a second tube, a third tube, a washing screw, and a driving mechanism. The first tube is connected to the discharge end of the feed hopper, and the second tube is connected to the discharge end of the water inlet hopper. The lower ends of the first and second tubes are connected to the third tube. The upper end of the third tube is provided with a feeding box, which has an inclined first discharge port. The lower end of the third tube is provided with a recovery box. The washing screw is disposed in the third tube. The driving mechanism drives the washing screw to rotate. The washing screw is provided with spirally arranged conveying blades, and the conveying blades have first screen holes.

[0010] Furthermore, a first conveying screw is rotatably connected inside the first tube, and a second conveying screw is rotatably connected inside the second tube. The driving mechanism includes a protective box, a first motor, a first rotating shaft, a second rotating shaft, and a third rotating shaft. The protective box is connected to the feed hopper and the water inlet hopper. The first motor is mounted on the protective box. The output end of the first motor is connected to the upper end of the first rotating shaft, and the lower end of the first rotating shaft is connected to the washing screw. A first active disc assembly and a second active disc assembly are provided on the first rotating shaft. The second and third rotating shafts are rotatably connected to the protective box. The second rotating shaft is connected to the first conveying screw, and the third rotating shaft is connected to the second conveying screw. A first transmission disc assembly is provided on the second rotating shaft, and a second transmission disc assembly is provided on the third rotating shaft. The first active disc assembly and the first transmission disc assembly are driven by a first belt, and the second active disc assembly and the second transmission disc assembly are driven by a second belt.

[0011] Furthermore, the first active disc assembly includes a first fixed disc and a first sliding disc, and the second active disc assembly includes a second fixed disc and a second sliding disc. The first fixed disc and the second fixed disc are fixedly connected to the first rotating shaft. The first sliding disc and the second sliding disc are sleeved on the first rotating shaft. A first positioning disc is provided on the first rotating shaft. A first positioning sleeve is slidably connected to the outside of the first positioning disc. The upper end of the first positioning sleeve abuts against the second sliding disc, and the lower end of the first positioning sleeve abuts against the first sliding disc. A first tension spring and a second tension spring are provided inside the first positioning sleeve. The two ends of the first tension spring are respectively connected to the first sliding disc and the first positioning disc, and the two ends of the second tension spring are respectively connected to the second sliding disc and the first positioning disc.

[0012] Furthermore, the first transmission disc assembly includes a third fixed disc and a third sliding disc, and the second transmission disc assembly includes a fourth fixed disc and a fourth sliding disc. The third fixed disc is fixedly connected to the second rotating shaft, and the third sliding disc is sleeved on the second rotating shaft. A second positioning disc is provided on the second rotating shaft, and a second positioning sleeve is sleeved on the outside of the second positioning disc. The second positioning sleeve is fixedly connected to the first positioning sleeve. A third tension spring is provided inside the second positioning sleeve, and the two ends of the third tension spring are respectively connected to the third sliding disc and the second positioning disc. The fourth fixed disc is fixedly connected to the third rotating shaft, and the fourth sliding disc is sleeved on the third rotating shaft. A third positioning disc is provided on the third rotating shaft, and a third positioning sleeve is sleeved on the outside of the third positioning disc. The third positioning sleeve is fixedly connected to the first positioning sleeve. A fourth tension spring is provided inside the third positioning sleeve, and the two ends of the fourth tension spring are respectively connected to the fourth sliding disc and the third positioning disc.

[0013] Furthermore, the outer wall of the first positioning sleeve is provided with a positioning rod, the side wall of the protective box is provided with a strip hole for the positioning rod to pass through, and the end of the positioning rod is provided with a threaded locking block.

[0014] Furthermore, the screening device includes a frame, a first screen frame, a second screen frame, a vibration mechanism, and a discharge pipe. The lower end of the first screen frame is provided with a first support, and the lower end of the second screen frame is provided with a second support. The frame is provided with a guide groove, and the first and second supports slide within the guide groove. The first screen frame is positioned above the second screen frame, and the first screen frame is provided with a second screen hole. The second screen frame is provided with a third screen hole. The front end of the second screen frame is provided with a second discharge port. The vibration mechanism drives the first and second screen frames to move back and forth to generate vibration. The discharge pipe is provided with a feed chute below the second discharge port, and the feed chute is positioned at the second discharge port. The front end of the discharge pipe is provided with a finished product box, and the discharge pipe is provided with a rotatably connected third conveying screw.

[0015] Furthermore, the vibration mechanism includes a second motor, a transmission rod, a first transmission gear, a second transmission gear, a transmission shaft, a first connecting rod, and a second connecting rod. The transmission shaft is rotatably connected to the frame. The first and second transmission gears are fixedly connected to the two ends of the transmission shaft, respectively. The second motor is mounted on the frame, and the power output end of the second motor is connected to the rear end of the transmission rod. The front end of the transmission rod is connected to the third conveying screw via a gear transmission mechanism. The transmission rod is provided with a worm section, which meshes with the second transmission gear. The two ends of the first connecting rod are respectively hinged to the side wall of the first support and the side wall of the first transmission gear. The two ends of the second connecting rod are respectively hinged to the side wall of the second support and the side wall of the second transmission gear.

[0016] Furthermore, compression springs are provided on the front and rear sides of the frame, and the compression springs on both sides are connected to the first support and the second support, respectively.

[0017] Furthermore, a fourth screen hole is provided on the lower side wall of the discharge pipe.

[0018] A phosphorus removal process based on the above-mentioned phosphorus removal equipment includes the following steps:

[0019] (1) Pass the activated carbon granules into the feed hopper;

[0020] (2) Pour the cleaning water into the water inlet;

[0021] (3) Start the first motor, which drives the first rotating shaft, the second rotating shaft and the third rotating shaft to rotate, thereby driving the first conveying screw, the second conveying screw and the washing screw to rotate;

[0022] (4) The first conveying screw conveys the granules in the feed hopper to the third pipe along the first pipe body, and the second conveying screw conveys the washing water in the water feed hopper to the third pipe body along the second pipe body. The granules and washing water are mixed in the third pipe body and conveyed and stirred by the washing screw.

[0023] (5) Adjust the up and down position of the first positioning sleeve by operating the positioning rod, thereby adjusting the rotation speed of the first conveying screw and the second conveying screw, and thus adjusting the ratio of granules and water entering the third pipe body.

[0024] (6) During the washing screw conveying process, smaller phosphate particles or powders and water fall down along the first screen holes into the recycling box for collection and processing, while other particles larger than the first screen hole diameter are conveyed upward into the feeding box and then conveyed to the first screen frame through the feeding box.

[0025] (7) Start the second motor. The second motor drives the transmission rod to rotate. The transmission rod drives the second transmission gear and the first transmission gear to rotate through the worm gear section. The second transmission gear and the first transmission gear drive the second support and the first support to move back and forth repeatedly through the second connecting rod and the first connecting rod, respectively.

[0026] (8) When the first screen moves back and forth, it vibrates and filters phosphate particles larger than the second screen hole diameter onto the first screen. The granules fall onto the second screen through the second screen hole. The second screen further filters the granules and filters phosphate particles larger than the third screen hole diameter onto the second screen. The granules enter the discharge pipe through the third screen hole.

[0027] (9) The transmission rod drives the third conveying screw to rotate, conveying the material in the discharge pipe to the front end. Phosphate particles or powders with a size smaller than the fourth sieve hole are screened out by the fourth sieve hole, while normal-sized particles fall from the front end of the discharge pipe into the finished product box for collection.

[0028] Compared with existing technologies, the advantages of this invention are that the rinsing device can adjust the mixing ratio of granules and cleaning water, thoroughly rinsing the activated granules and effectively removing residual phosphoric acid and other impurities. Furthermore, the invention incorporates multiple sieve holes, enabling multiple filtration and screening of the granules, effectively removing fine phosphate particles or precipitates from the granules and further improving product quality. Attached Figure Description

[0029] Figure 1 This is a perspective view of the external structure of the present invention.

[0030] Figure 2 This is another perspective view of the external structure of the present invention.

[0031] Figure 3 This is a front view of the cross-sectional structure of the present invention.

[0032] Figure 4 This is a side view of the cross-sectional structure of the present invention.

[0033] Figure 5 This is a three-dimensional schematic diagram of the drive mechanism.

[0034] Figure 6 for Figure 1 A magnified view of a portion of region A in the middle.

[0035] In the picture:

[0036] Washing device 1, feed hopper 11, first pipe body 12, water inlet hopper 13, second pipe body 14, third pipe body 15, feeding box 151, recycling box 152, washing screw 16, first screen hole 161, first conveying screw 17, second conveying screw 18, screening device 2, frame 21, guide slide 211, first screen frame 22, first support 221, second screen hole 222, second screen frame 23, second support 231, third screen hole 232, discharge pipe 24, feed trough 241, fourth screen hole 242, third conveying screw 243, finished product box 25, drive mechanism 3, protective box 31, first motor 32, first rotating shaft 33, second rotating shaft 34, third rotating shaft 35, first belt 361, second belt 3 62. First fixed plate 371, first sliding plate 372, second fixed plate 373, second sliding plate 374, third fixed plate 375, third sliding plate 376, fourth fixed plate 377, fourth sliding plate 378, first positioning plate 381, first positioning sleeve 382, ​​positioning rod 3821, locking block 3822, first tension spring 383, second tension spring 384, second positioning plate 391, second positioning sleeve 392, third tension spring 393, third positioning plate 394, third positioning sleeve 395, fourth tension spring 396, second motor 41, transmission rod 42, worm gear segment 421, first transmission gear 43, second transmission gear 44, transmission shaft 45, first connecting rod 46, second connecting rod 47, compression spring 48. Detailed Implementation

[0037] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0038] like Figure 1-6As shown, a phosphorus removal device for preparing mesoporous activated carbon includes a rinsing device 1 and a screening device 2. The rinsing device 1 includes a feed hopper 11, a first pipe 12, a water inlet hopper 13, a second pipe 14, a third pipe 15, a washing screw 16, and a drive mechanism 3. The first pipe 12 is connected to the discharge end of the feed hopper 11. The upper end of the feed hopper 11 is provided with a feed inlet, which can be connected to the discharge outlet of the activation furnace to directly feed the activated carbon into the feed hopper 11. The second pipe 14 is connected to the discharge end of the water inlet hopper 13. The upper end of the water inlet hopper 13 is provided with a water inlet pipe, which can be connected to an external water tank and pump to supply cleaning water to the water inlet hopper 13. The lower ends of the first tube 12 and the second tube 14 are connected to the third tube 15. The upper end of the third tube 15 is provided with a feeding box 151, which has an inclined first discharge port, so that after the granules enter the feeding box 151, they can fall from the first discharge port to the screening device 2. The lower end of the third tube 15 is provided with a recovery box 152. The washing screw 16 is installed inside the third tube 15. The drive mechanism 3 drives the washing screw 16 to rotate. The washing screw 16 can be rotatably connected to the feeding box 151 through a bearing. The washing screw 16 is provided with a spirally arranged conveying blade, and the conveying blade has a first screen hole 161. The diameter of the first screen hole 161 is smaller than the diameter of the granules. After the granules and water enter the third tube 15, the washing screw 16 can fully agitate, wash and convey the granules and water. Small phosphate particles and powders can be mixed with water and flow downwards along the first screen 161 into the recovery box 152 for recycling. Meanwhile, normal-sized granules are conveyed upwards through the washing screw 16 into the feeding box 151.

[0039] As a feeding method for the first tube 12 and the second tube 14 in this invention, the first tube 12 is provided with a first conveying screw 17 rotatably connected inside, and the second tube 14 is provided with a second conveying screw 18 rotatably connected inside. The driving mechanism 3 includes a protective box 31, a first motor 32, a first rotating shaft 33, a second rotating shaft 34 and a third rotating shaft 35. The protective box 31 is installed on the feed hopper 11 and the water inlet hopper 13. The first motor 32 is installed on the protective box 31. The first rotating shaft 33, the second rotating shaft 34 and the third rotating shaft 35 are rotatably connected to the protective box 31 through bearings. The output end of the first motor 32 is connected to the upper end of the first rotating shaft 33, and the lower end of the first rotating shaft 33 is connected to the washing screw 16. The first rotating shaft 33 is provided with a first active disc group and a second active disc group. The second rotating shaft 34 and the third rotating shaft 35 are rotatably connected to the protective box 31. The second rotating shaft 34 is connected to the first conveying screw, and the third rotating shaft 35 is connected to the second conveying screw 18. The second rotating shaft 34 is provided with a first transmission disc group, and the third rotating shaft 35 is provided with a second transmission disc group. The first motor 32 can drive the first rotating shaft 33 to rotate. The first active disc group and the first transmission disc group are driven by the first belt 361, and the second active disc group and the second transmission disc group are driven by the second belt 362.

[0040] In this embodiment, in order to adjust the rotational speed of the second rotating shaft 34 and the third rotating shaft 35, the first active disk group includes a first fixed disk 371 and a first sliding disk 372, and the second active disk group includes a second fixed disk 373 and a second sliding disk 374. The first fixed disk 371 and the second fixed disk 373 are fixedly connected to the first rotating shaft 33. The first sliding disk 372 and the second sliding disk 374 are sleeved on the first rotating shaft 33. The first rotating shaft 33 is provided with a first positioning disk 381. A first positioning sleeve 382 is slidably connected to the outer side of the first positioning disk 381. Rotatably connected ball bearings can be provided on the outer circumferential sidewall of the first positioning disk 381, so that the sliding between the first positioning disk 381 and the first positioning sleeve 382 is more stable. The upper end of the first positioning sleeve 382 abuts against the second sliding disk 374, and the lower end of the first positioning sleeve 382 abuts against the first sliding disk 372. The first positioning sleeve 382 contains a first tension spring 383 and a second tension spring 384. The two ends of the first tension spring 383 are connected to the first sliding disk 372 and the first positioning disk 381, respectively. The two ends of the second tension spring 384 are connected to the second sliding disk 374 and the first positioning disk 381, respectively. The first tension spring 383 and the second tension spring 384 respectively pull the first... Sliding discs 372 and 374 are located close to the first positioning sleeve 382. The outer wall of the first positioning sleeve 382 is provided with a positioning rod 3821. The side wall of the protective box 31 has a slotted hole through which the positioning rod 3821 passes. The end of the positioning rod 3821 is provided with a threaded locking block 3822. By rotating the locking block 3822, it can press against the side wall of the protective box 31, thereby locking and fixing the positions of the positioning rod 3821 and the first positioning sleeve 382. The position of the first positioning sleeve 382 can be adjusted by lifting and lowering the positioning rod 3821. During the adjustment of the first positioning sleeve 382, ​​the first tension spring 383 and the second tension spring 384 can drive the first sliding disc 372 and the second sliding disc 374 to move up and down.

[0041] The first transmission disc assembly includes a third fixed disc 375 and a third sliding disc 376. The second transmission disc assembly includes a fourth fixed disc 377 and a fourth sliding disc 378. The third fixed disc 375 is fixedly connected to the second rotating shaft 34, and the third sliding disc 376 is sleeved on the second rotating shaft 34. A second positioning disc 391 is provided on the second rotating shaft 34, and a second positioning sleeve 392 is sleeved on the outside of the second positioning disc 391. The second positioning sleeve 392 is fixedly connected to the first positioning sleeve 382. A third tension spring 393 is provided inside the second positioning sleeve 392. The two ends of 93 are connected to the third sliding disk 376 and the second positioning disk 391 respectively. The fourth fixed disk is fixedly connected to the third rotating shaft 35. The fourth sliding disk 378 is sleeved on the third rotating shaft 35. The third rotating shaft 35 is provided with a third positioning disk 394. A third positioning sleeve 395 is sleeved on the outside of the third positioning disk 394. The third positioning sleeve 395 is fixedly connected to the first positioning sleeve 382. A fourth tension spring 396 is provided inside the third positioning sleeve 395. The two ends of the fourth tension spring 396 are connected to the fourth sliding disk 378 and the third positioning disk 394 respectively.

[0042] With the above structure, both the fixed disc and the sliding disc are truncated cones, so the radial dimensions of the fixed disc and the sliding disc gradually decrease towards their respective inward directions. During cleaning, when the first positioning sleeve 382 is in the middle, each active disc assembly and each transmission disc assembly is in its initial position. At this time, the contact positions of the first belt 361 and the second belt 362 with each active disc assembly and each transmission disc assembly are the same. The transmission ratio between the first rotating shaft 33 and the second rotating shaft 34 is 1:1, and the transmission ratio between the first rotating shaft 33 and the third rotating shaft 35 is also 1:1. When there is too little granule and too much water in the third pipe 15, it is necessary to increase the granule conveying rate. At this time, the positioning rod 3821 is lifted upward, driving the first positioning sleeve 382, ​​the second positioning sleeve 392, and the third positioning sleeve 395 to rise. During this process, the first sliding disk 372 and the second sliding disk 374 rise together, the distance between the first sliding disk 372 and the first fixed disk 371 increases, the contact area between the first belt 361 and the first sliding disk 372 and the first fixed disk 371 gradually extends outward, the distance between the third sliding disk 376 and the third fixed disk 375 decreases, and the contact area between the first belt 361 and the third sliding disk 376 and the third fixed disk 375 gradually contracts inward. In this way, every time the first rotating shaft 33 rotates by a certain angle, it can increase the transmission length of the belt, thereby increasing the transmission ratio to the second rotating shaft 34, thereby accelerating the rotation speed of the first conveying screw and increasing the conveying capacity of the granules. Similarly, the distance between the second fixed disk 373 and the second sliding disk 374 decreases, while the distance between the fourth fixed disk 377 and the fourth sliding disk 378 increases, reducing the transmission ratio between the first rotating shaft 33 and the third rotating shaft 35, thereby reducing the conveying chain of the cleaning water. Conversely, if the conveying volume of the granules is large, but the flow rate of the cleaning water is small, making it impossible to thoroughly clean the granules, the positioning rod 3821 can be pressed down to increase the transmission ratio to the third rotating shaft 35 and decrease the transmission ratio to the second rotating shaft 34, thereby increasing the flow rate of the cleaning water and reducing the conveying speed of the granules.

[0043] In this embodiment, the screening device 2 includes a frame 21, a first screen frame 22, a second screen frame 23, a vibration mechanism, and a discharge pipe 24. The lower end of the first screen frame 22 is provided with a first support 221, and the lower end of the second screen frame 23 is provided with a second support 231. The frame 21 is provided with a guide groove 211. The first support 221 and the second support 231 slide within the guide groove 211. The lower end of the guide groove 211 may be provided with a T-shaped groove. The lower ends of the first support 221 and the second support 231 may be provided with T-shaped blocks that cooperate with the T-shaped grooves, thereby restricting the vertical direction of the first support 221 and the second support 231. The first screen frame 22 is positioned above the second screen frame 23. The first screen frame 22 has a second screen hole 222, and the second screen frame 23 has a third screen hole 232. The diameters of the second screen hole 222 and the third screen hole 232 are larger than the diameter of the material, and the diameter of the second screen hole 222 is larger than the diameter of the third screen hole 232. The front end of the second screen frame 23 has a second discharge port. The vibration mechanism drives the first screen frame 22 and the second screen frame 23 to move back and forth to generate vibration. The discharge pipe 24 has a feed trough 241 below the second discharge port. The feed trough 241 is positioned below the second discharge port. The front end of the discharge pipe 24 has a finished product box 25. The lower side wall of the discharge pipe 24 has a fourth screen hole 242, the diameter of which is smaller than the diameter of the material. The discharge pipe 24 has a rotatably connected third conveying screw 243 inside. The end of the third conveying screw 243 can be rotatably connected to the frame 21 through a bearing. Specifically, the vibration mechanism includes a second motor 41, a transmission rod 42, a first transmission gear 43, a second transmission gear 44, a transmission shaft 45, a first connecting rod 46, and a second connecting rod 47. The transmission shaft 45 is rotatably connected to the frame 21. The first transmission gear 43 and the second transmission gear 44 are respectively fixedly connected to the two ends of the transmission shaft 45. The second motor 41 is mounted on the frame 21. The power output end of the second motor 41 is connected to the rear end of the transmission rod 42. The front end of the transmission rod 42 is connected to the third conveying screw 243 through a gear transmission mechanism. The transmission rod 42 is provided with a worm section 421, which meshes with the second transmission gear 44. The two ends of the first connecting rod 46 are respectively hinged to the side wall of the first support 221 and the side wall of the first transmission gear 43. The two ends of the second connecting rod 47 are respectively hinged to the side wall of the second support 231 and the side wall of the second transmission gear 44. Compression springs 48 are provided on the front and rear sides of the frame 21, and the compression springs 48 on both sides are connected to the first support 221 and the second support 231 respectively.With the above structure, the second motor 41 can drive the transmission rod 42 to rotate, thereby driving the third conveying screw 243 to rotate and conveying the granules in the discharge pipe 24 to the front end. At this time, the material can be screened again, and small-volume phosphates can be discharged through the fourth screen hole 242. At the same time, the worm section 421 of the transmission rod 42 can form a worm gear mechanism with the first transmission gear 43, driving the first transmission gear 43 and the second transmission gear 44 to rotate. Then, through the first connecting rod 46 and the second connecting rod 47, the first support 221 and the second support 231 are driven to move horizontally. When the first support 221 and the second support 231 move horizontally, they can be supported by the compression spring 48 to increase the vibration amplitude and improve the screening intensity of the material.

[0044] A phosphorus removal process based on the above-mentioned phosphorus removal equipment includes the following steps:

[0045] (1) Pass the activated carbon granules into the feed hopper 11;

[0046] (2) Pour the cleaning water into the water inlet 13;

[0047] (3) Start the first motor 32. The first motor 32 drives the first rotating shaft 33, the second rotating shaft 34 and the third rotating shaft 35 to rotate, thereby driving the first conveying screw 17, the second conveying screw 18 and the washing screw 16 to rotate.

[0048] (4) The first conveying screw 17 conveys the granules in the feed hopper 11 along the first pipe body 12 to the third pipe body 15, and the second conveying screw 18 conveys the washing water in the water inlet hopper 13 along the second pipe body 14 to the third pipe body 15. The granules and washing water are mixed in the third pipe body 15 and conveyed and stirred by the washing screw 16.

[0049] (5) The up and down position of the first positioning sleeve 382 is adjusted by operating the positioning rod 3821, thereby adjusting the rotation speed of the first conveying screw 17 and the second conveying screw 18, so as to adjust the ratio of granules and water entering the third tube 15.

[0050] (6) During the conveying process of the washing screw 16, smaller phosphate particles or powders and water fall down along the first screen hole 161 into the recycling box 152 for collection and processing, while other particles larger than the first screen hole 161 are conveyed upward into the feeding box 151 and then conveyed to the first screen frame 22 through the feeding box 151.

[0051] (7) Start the second motor 41. The second motor 41 drives the transmission rod 42 to rotate. The transmission rod 42 drives the second transmission gear 44 and the first transmission gear 43 to rotate through the worm section 421. The second transmission gear 44 and the first transmission gear 43 drive the second support 231 and the first support 221 to move back and forth repeatedly through the second connecting rod 47 and the first connecting rod 46 respectively.

[0052] (8) When the first screen frame 22 moves back and forth, it vibrates and filters phosphate particles larger than the aperture of the second screen hole 222 onto the first screen frame 22. The particles fall onto the second screen frame 23 through the second screen hole 222. The second screen frame 23 further filters the particles and filters phosphate particles larger than the aperture of the third screen hole 232 onto the second screen frame 23. The particles enter the discharge pipe 24 through the third screen hole 232.

[0053] (9) The transmission rod 42 drives the third conveying screw 243 to rotate, conveying the material in the discharge pipe 24 to the front end. Phosphate particles or powders with a size smaller than the fourth sieve hole 242 are screened out by the fourth sieve hole 242, while normal-sized particles fall from the front end of the discharge pipe 24 into the finished product box for collection.

[0054] Compared with existing technologies, the rinsing device 1 of this invention can adjust the mixing ratio of granules and cleaning water to thoroughly rinse the activated granules, effectively removing residual phosphoric acid and other impurities. Furthermore, this invention features multiple sieve holes, enabling multiple filtration and screening of the granules, effectively removing fine phosphate particles or precipitates from the granules, further improving product quality.

[0055] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A phosphorus removal device for preparing mesoporous activated carbon, characterized in that, The device includes a rinsing device and a screening device. The rinsing device includes a feed hopper, a first pipe body, a water inlet hopper, a second pipe body, a third pipe body, a washing screw, and a drive mechanism. The first pipe body is connected to the discharge end of the feed hopper, and the second pipe body is connected to the discharge end of the water inlet hopper. The lower ends of the first and second pipe bodies are connected to the third pipe body. The upper end of the third pipe body is provided with a feeding box, which has an inclined first discharge port. The lower end of the third pipe body is provided with a recycling box. The washing screw is installed in the third pipe body. The drive mechanism drives the washing screw to rotate. The washing screw is provided with spirally arranged conveying blades, and the conveying blades have first screen holes. The first tube contains a first conveying screw that is rotatably connected, and the second tube contains a second conveying screw that is rotatably connected. The driving mechanism includes a protective box, a first motor, a first rotating shaft, a second rotating shaft, and a third rotating shaft. The protective box is connected to the feed hopper and the water inlet hopper. The first motor is mounted on the protective box. The output end of the first motor is connected to the upper end of the first rotating shaft, and the lower end of the first rotating shaft is connected to the washing screw. The first rotating shaft has a first active disc assembly and a second active disc assembly. The second and third rotating shafts are rotatably connected to the protective box. The second rotating shaft is connected to the first conveying screw, and the third rotating shaft is connected to the second conveying screw. The second rotating shaft has a first transmission disc assembly, and the third rotating shaft has a second transmission disc assembly. The first active disc assembly and the first transmission disc assembly are driven by a first belt, and the second active disc assembly and the second transmission disc assembly are driven by a second belt. The first active disc assembly includes a first fixed disc and a first sliding disc, and the second active disc assembly includes a second fixed disc and a second sliding disc. The first fixed disc and the second fixed disc are fixedly connected to the first rotating shaft. The first sliding disc and the second sliding disc are sleeved on the first rotating shaft. The first rotating shaft is provided with a first positioning disc. A first positioning sleeve is slidably connected to the outside of the first positioning disc. The upper end of the first positioning sleeve abuts against the second sliding disc, and the lower end of the first positioning sleeve abuts against the first sliding disc. The first positioning sleeve is provided with a first tension spring and a second tension spring. The two ends of the first tension spring are respectively connected to the first sliding disc and the first positioning disc, and the two ends of the second tension spring are respectively connected to the second sliding disc and the first positioning disc. The screening device includes a frame, a first screen frame, a second screen frame, a vibration mechanism, and a discharge pipe. The lower end of the first screen frame is provided with a first support, and the lower end of the second screen frame is provided with a second support. The frame is provided with a guide groove, and the first and second supports slide within the guide groove. The first screen frame is positioned above the second screen frame, and the first screen frame is provided with a second screen hole. The second screen frame is provided with a third screen hole. The front end of the second screen frame is provided with a second discharge port. The vibration mechanism drives the first and second screen frames to move back and forth to generate vibration. The discharge pipe is provided with a feed chute below the second discharge port, and the feed chute is located at the second discharge port. The front end of the discharge pipe is provided with a finished product box, and the discharge pipe is provided with a rotatably connected third conveying screw.

2. The phosphorus removal equipment for preparing mesoporous activated carbon as described in claim 1, characterized in that, The first transmission disc assembly includes a third fixed disc and a third sliding disc. The second transmission disc assembly includes a fourth fixed disc and a fourth sliding disc. The third fixed disc is fixedly connected to the second rotating shaft. The third sliding disc is sleeved on the second rotating shaft. A second positioning disc is provided on the second rotating shaft. A second positioning sleeve is sleeved on the outside of the second positioning disc. The second positioning sleeve is fixedly connected to the first positioning sleeve. A third tension spring is provided inside the second positioning sleeve. The two ends of the third tension spring are respectively connected to the third sliding disc and the second positioning disc. The fourth fixed disc is fixedly connected to the third rotating shaft. The fourth sliding disc is sleeved on the third rotating shaft. A third positioning disc is provided on the third rotating shaft. A third positioning sleeve is sleeved on the outside of the third positioning disc. The third positioning sleeve is fixedly connected to the first positioning sleeve. A fourth tension spring is provided inside the third positioning sleeve. The two ends of the fourth tension spring are respectively connected to the fourth sliding disc and the third positioning disc.

3. The phosphorus removal equipment for preparing mesoporous activated carbon as described in claim 2, characterized in that, The outer wall of the first positioning sleeve is provided with a positioning rod, and the side wall of the protective box is provided with a strip hole for the positioning rod to pass through. The end of the positioning rod is provided with a threaded locking block.

4. The phosphorus removal equipment for preparing mesoporous activated carbon as described in claim 1, characterized in that, The vibration mechanism includes a second motor, a transmission rod, a first transmission gear, a second transmission gear, a transmission shaft, a first connecting rod, and a second connecting rod. The transmission shaft is rotatably connected to the frame. The first and second transmission gears are fixedly connected to the two ends of the transmission shaft, respectively. The second motor is mounted on the frame, and the power output end of the second motor is connected to the rear end of the transmission rod. The front end of the transmission rod is connected to the third conveying screw through a gear transmission mechanism. The transmission rod is provided with a worm section, which meshes with the second transmission gear. The two ends of the first connecting rod are respectively hinged to the side wall of the first support and the side wall of the first transmission gear. The two ends of the second connecting rod are respectively hinged to the side wall of the second support and the side wall of the second transmission gear.

5. A phosphorus removal device for preparing mesoporous activated carbon as described in claim 4, characterized in that, Compression springs are provided on the front and rear sides of the frame, and the compression springs on both sides are connected to the first support and the second support respectively.

6. A phosphorus removal device for preparing mesoporous activated carbon as described in claim 5, characterized in that, The lower end side wall of the discharge pipe is provided with a fourth sieve hole.

7. A phosphorus removal process based on the phosphorus removal equipment according to any one of claims 1-6, characterized in that, Includes the following steps: (1) Pass the activated carbon granules into the feed hopper; (2) Pour the cleaning water into the water inlet hopper; (3) Start the first motor, which drives the first rotating shaft, the second rotating shaft and the third rotating shaft to rotate, thereby driving the first conveying screw, the second conveying screw and the washing screw to rotate; (4) The first conveying screw conveys the granules in the feed hopper to the third pipe along the first pipe, and the second conveying screw conveys the washing water in the water inlet hopper to the third pipe along the second pipe. The granules and washing water are mixed in the third pipe and conveyed and stirred by the washing screw. (5) Adjust the up and down position of the first positioning sleeve by operating the positioning rod, thereby adjusting the rotation speed of the first conveying screw and the second conveying screw, and thus adjusting the ratio of granules and water entering the third pipe body; (6) During the washing screw conveying process, smaller phosphate particles or powders and water fall down along the first screen holes into the recycling box for collection and processing, while other particles larger than the first screen hole diameter are conveyed upward into the feeding box and then conveyed to the first screen frame through the feeding box. (7) Start the second motor. The second motor drives the transmission rod to rotate. The transmission rod drives the second transmission gear and the first transmission gear to rotate through the worm gear section. The second transmission gear and the first transmission gear drive the second support and the first support to move back and forth repeatedly through the second connecting rod and the first connecting rod, respectively. (8) When the first screen moves back and forth, it vibrates and filters phosphate particles larger than the second screen hole diameter onto the first screen, while the granules fall onto the second screen through the second screen hole. The second screen further screens the granules and filters phosphate particles larger than the third screen hole diameter onto the second screen, while the granules enter the discharge pipe through the third screen hole. (9) The transmission rod drives the third conveying screw to rotate, conveying the material in the discharge pipe to the front end. Phosphate particles or powders with a size smaller than the fourth sieve hole are screened out by the fourth sieve hole, while normal-sized particles fall from the front end of the discharge pipe into the finished product box for collection.

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