Dust filtering device for sulfamic acid production and operation method thereof

Abstract

The invention belongs to the field of sulfamic acid production, and particularly relates to a dust filtering device for sulfamic acid production, the dust filtering device comprises a filtering box, the outer wall of the filtering box is fixedly connected with a supporting ring, and the inner wall of the supporting ring is fixedly connected with a plurality of supporting legs at equal intervals; according to the dust filtering device for sulfamic acid production and the operation method of the dust filtering device, sulfamic acid crystal particles and powder falling in the pipeline are heated and dried through the heating wire, and the sulfamic acid crystal particles and powder slide down along the cambered surface of the top of the fixing ring; sliding sulfamic acid crystal particles and powder are heated and dried through hot air in a cavity, the falling sulfamic acid crystal particles and powder are blocked through a feeding cavity, a first scraper blade is controlled by a first motor to rotate, the sulfamic acid crystal particles and powder in the feeding cavity are stirred, and the sulfamic acid crystal particles and powder in the feeding cavity are dried. And when the sulfamic acid crystal particles and powder are shifted to the second feed opening, the sulfamic acid crystal particles and powder fall down from the second feed opening, so that the circulation speed of the sulfamic acid crystal particles and powder is further reduced.

Description

Technical Field

[0001] The present invention belongs to the field of sulfamic acid production, and specifically relates to a dust filtration device for sulfamic acid production and its operation method. Background Art

[0002] Sulfamic acid is an organic compound containing amino and sulfonic acid groups, with strong solubility and can rapidly dissolve in water. Sulfamic acid is often used as an intermediate for fertilizers and industrial chemicals, and can also be used in the synthesis of herbicides, flame retardants, sweeteners, preservatives, metal cleaning agents, etc. It is a common chemical raw material. In compound fertilizers, sulfamic acid, as one of the nitrogen sources, can promote plant growth and improve soil nutrient supply. Its solubility enables sulfamic acid to rapidly release nitrogen, providing the nitrogen fertilizer required by plants, thereby improving fertilizer efficiency and crop yield.

[0003] During the production of sulfamic acid, it is necessary to form solid crystals through cooling crystallization. If the particle size of the sulfamic acid crystals after crystallization and drying is large, it needs to be crushed to the target particle size by a crusher. During the mechanical crushing process, the high-speed rotating blades or grinding media break the crystals, generating a large amount of dust. After the crushing is completed, it is necessary to separate the sulfamic acid crystal particles from the dust. Most of the existing technologies filter the dust through a filter screen or filter bag. However, sulfamic acid dust has strong hygroscopicity and is prone to forming paste-like crystals when encountering water vapor, accumulating in the filter bag, pipeline or hopper, resulting in an increase in system resistance and even shutdown. Moreover, when filtering the mixed crystals and dust, if the dust volume is large in some areas, it is easy to accumulate together and cause blockage of the filter screen. In addition, trace amounts of liquid water are likely to precipitate on the surface of the crushed sulfamic acid crystal particles, causing a large amount of dust to adhere to the sulfamic acid crystal particles, and the dust adhering to the sulfamic acid crystal particles cannot be effectively filtered during dust filtration.

[0004] Therefore, the present invention provides a dust filtration device for sulfamic acid production and its operation method. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve the problem that most of the existing technologies filter the dust through a filter screen or filter bag. However, sulfamic acid dust has strong hygroscopicity and is prone to forming paste-like crystals when encountering water vapor, accumulating in the filter bag, pipeline or hopper, resulting in an increase in system resistance and even shutdown. Moreover, when filtering the mixed crystals and dust, if the dust volume is large in some areas, it is easy to accumulate together and cause blockage of the filter screen. In addition, trace amounts of liquid water are likely to precipitate on the surface of the crushed sulfamic acid crystal particles, causing a large amount of dust to adhere to the sulfamic acid crystal particles, and the dust adhering to the sulfamic acid crystal particles cannot be effectively filtered during dust filtration, the present invention proposes a dust filtration device for sulfamic acid production and its operation method.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a dust filtering device for aminosulfonic acid production according to the present invention comprises a filter box, the outer wall of the filter box is fixedly connected to a support ring, the inner wall of the support ring is fixedly connected to a plurality of legs at equal intervals, the inner wall of the filter box is fixedly connected to a filter plate, the top of the filter plate is set as an annular inclined surface, and the bottom of the filter plate is fixedly connected to a guide ring, and further comprises: Drying component, used to dry out moisture from filtered aminosulfonic acid crystal particles and powder; The air blowing component is used to dry the circulating sulfamic acid crystal particles and powder with hot air; The material stripping assembly is used to prevent the filter plate from being blocked by sulfamic acid crystal powder.

[0007] Preferably, the drying component includes a pipe, which is fixedly installed on the inner wall of the filter box. A baffle is fixedly connected to the inner wall of the pipe. The bottom of the baffle is set as a slope. A first discharge port is opened at the bottom of the baffle slope. The top of the baffle is fixedly connected to a first motor. The output end of the first motor extends to the interior of the pipe and is fixedly connected to a heating pipe. A heating wire is provided inside the heating pipe.

[0008] Preferably, a plurality of fixing rings are fixedly connected to the outer wall of the heating tube at equal intervals, the top and the bottom of the fixing ring are both set as annular arc surfaces, and the inner wall of the fixing ring is provided with a cavity, which is communicated with the heating tube.

[0009] Preferably, several support platforms are equidistantly fixedly connected to the inner wall of the pipe, the top of the support platform is set as an annular arc surface, and a feed cavity is opened on the top of the support platform; two second discharge ports are symmetrically opened at the bottom of the support platform, and several groups of the second discharge ports are staggered. Two first scrapers are symmetrically fixedly connected to the bottom of the fixed ring, and the first scrapers extend to the inside of the feed cavity. Both sides of the first scraper are fixedly connected to a mounting frame, and the inner wall of the mounting frame is fixedly connected to a toggle plate, and the toggle plate is set to an arc shape.

[0010] Preferably, the air-blowing assembly includes an air outlet which is opened at the bottom of the heating pipe. An air inlet is opened on the outer wall of the heating pipe. A sleeve is rotatably connected to the outer wall of the heating pipe. The air inlet is located inside the sleeve. Two air inlet pipes are symmetrically and fixedly connected to the inner wall of the pipe. One end of each of the two air inlet pipes extends into the sleeve. A sleeve box is fixedly connected to the bottom of the air inlet pipe. Two one-way valves are symmetrically arranged on the inner wall of the air inlet pipe with the sleeve box as the center. Both of the two one-way valves open towards the sleeve. A piston plate is slidably connected to the inner wall of the sleeve box. A piston rod is fixedly connected to the bottom of the piston plate. The bottom of the piston rod penetrates through the sleeve box. Two second motors are symmetrically and fixedly connected to the outer wall of the pipe. The output end of the second motor is fixedly connected to a crank. One side of the crank is rotatably connected to a connecting shaft. The connecting shaft is rotatably connected to the piston rod.

[0011] Preferably, a flow guiding ring is fixedly connected to the bottom of the heating pipe. The inner wall of the flow guiding ring is arranged as an annular arc surface. A partition board is fixedly connected to the outer wall of the heating pipe. The top of the flow guiding ring is located below the partition board.

[0012] Preferably, a second rotating shaft is rotatably connected to the top of the inner wall of the filtering box. A fan blade is fixedly connected to the bottom of the second rotating shaft. The fan blade is located above the flow guiding ring. The top of the second rotating shaft penetrates through the filtering box and is fixedly connected to a second bevel gear. A first bevel gear is fixedly connected to the outer wall of the output end of the second motor. The first bevel gear is meshed with the second bevel gear.

[0013] Preferably, the material pushing component includes a plurality of retaining rings which are fixedly installed at equal intervals on the top of the filter plate. Two third material discharging openings are symmetrically opened on the inner wall of the retaining ring. Several groups of the third material discharging openings are installed in a staggered manner. A first rotating shaft is fixedly connected to the bottom of the heating pipe. A plurality of brackets are fixedly connected to the outer wall of the first rotating shaft at equal intervals. Push plates are fixedly connected to both ends of the bracket.

[0014] Preferably, second scraping plates are fixedly connected to both sides of the push plate. The bottom of the second scraping plate is attached to the top of the filter plate. The top of the second scraping plate is arranged as an inclined surface.

[0015] An operation method of a dust filtering device for the production of sulfamic acid, which is applicable to the above-mentioned dust filtering device for the production of sulfamic acid, and the steps of the operation method are as follows: S1: Pour the crushed sulfamic acid crystal particles and powder into the pipe, start the heating wire, and heat and dry the sulfamic acid crystal particles and powder falling in the pipe. S2: Start the first motor to drive the first scraping plate to rotate, and stir the sulfamic acid crystal particles and powder in the feeding cavity to make the sulfamic acid crystal particles and powder slowly discharge. S3: Start the second motor to control the piston plate to reciprocate up and down, so that the hot air in the heating tube is discharged from the air outlet, and the sulfamic acid crystal particles and powder falling in the pipeline are heated and dried.

[0016] The beneficial effects of the present invention are as follows: 1. For the dust filtering device and its operation method for sulfamic acid production described in the present invention, the heating tube is heated by the heating wire, and then the sulfamic acid crystal particles and powder falling in the pipeline are heated and dried. The cavity provided can accumulate the hot air in the heating tube. When the sulfamic acid crystal particles and powder fall, they slide along the arc surface at the top of the fixed ring, and the hot air in the cavity heats and dries the sliding sulfamic acid crystal particles and powder.

[0017] 2. For the dust filtering device and its operation method for sulfamic acid production described in the present invention, the falling sulfamic acid crystal particles and powder are blocked by the feeding cavity. The first motor controls the first scraper to rotate, and the sulfamic acid crystal particles and powder in the feeding cavity are stirred. When the sulfamic acid crystal particles and powder are stirred to the second feeding port, they fall from the second feeding port, thereby further delaying the flow rate of the sulfamic acid crystal particles and powder, giving sufficient drying time to the sulfamic acid crystal particles and powder. When the first scraper rotates, it drives the stirring plate to rotate. The sulfamic acid crystal particles and powder are shoveled up by the arc surface at the top of the stirring plate, so that the sulfamic acid crystal particles and powder roll on the support table, thereby heating and drying the sulfamic acid crystal particles and powder evenly, and avoiding incomplete volatilization of the moisture of the sulfamic acid crystal particles and powder accumulated at the bottom.

[0018] 3. For the dust filtering device and its operation method for sulfamic acid production described in the present invention, the hot air in the heating tube is discharged downward through the air blowing assembly. Through the guidance of the inner wall arc surface of the diversion ring and the block of the outer wall of the heating tube, the hot air discharged from the air outlet gradually flows upward, heating and drying the sulfamic acid crystal particles and powder falling in the pipeline. When the hot air floats to the fixed ring, it is blocked by the inclined surface at the bottom of the fixed ring, delaying the floating speed of the hot air and prolonging the flow time of the hot air in the pipeline. And through the guidance of the inclined surface at the bottom of the fixed ring, the hot air flows along the top of the feeding cavity, thereby facilitating better heating and drying of the sulfamic acid crystal particles and powder in the feeding cavity.

[0019] 4. The dust filtering device for producing sulfamic acid and the operating method thereof described in the present invention are characterized in that the sulfamic acid crystal particles and powder falling from the second feed opening fall on the arc surface at the top of the guide ring, and are guided by the arc surface at the top of the guide ring so that the sulfamic acid crystal particles and powder fall on the highest point of the filter plate, thereby preventing the sulfamic acid crystal particles and powder from sliding off the inclined surface of the filter plate. The sulfamic acid crystal particles and powder falling from the second feed opening are beaten by the rotation of the fan blades, and the powder adhered to the outside of the sulfamic acid crystal particles is shaken off, thereby preventing the sulfamic acid powder from sticking to the sulfamic acid crystal particles after drying. Moreover, as the fan blades beat, the sulfamic acid crystal particles and powder falling from the second feed opening are scattered everywhere, thereby preventing the sulfamic acid crystal particles and powder falling from the second feed opening from concentrating and falling on the filter plate, thereby affecting the filtering effect.

[0020] 5. The dust filtering device for sulfamic acid production and the operating method thereof described in the present invention drive sulfamic acid crystal particles and powder to rotate on the filter plate by a push plate. When the sulfamic acid crystal particles and powder are pushed to the third discharge port, they slide from the third discharge port and are blocked by the retaining ring of the next layer, thereby extending the filtering time of the filter plate for the sulfamic acid crystal particles and powder, preventing the powder from sliding off the filter plate before it can separate from the sulfamic acid crystal particles. When the push plate rotates, it drives the second scraper to rotate in contact with the top of the filter plate, preventing the filter plate from being blocked by the sulfamic acid powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional diagram of the filter box and pipeline used in conjunction with each other; Figure 2 This is a three-dimensional diagram of the filter box and filter plate of the present invention in cooperation with each other; Figure 3 This is an exploded view of the pipe and guide ring of the present invention in cooperation with each other; Figure 4 This is a cross-sectional view of the filter plate and guide ring of the present invention in cooperation with each other; Figure 5 This is a three-dimensional diagram of the heating tube and the guide ring of the present invention in cooperation with each other; Figure 6 This is a three-dimensional diagram of the coordinated use of several second feed openings of the present invention; Figure 7 This is a three-dimensional diagram of the coordinated use of several third feed openings of the present invention; Figure 8 This invention Figure 4 Enlarged view of point A in the middle; Figure 9 This invention Figure 4 Enlarged view of point B in the middle; Figure 10 This invention Figure 4 Enlarged view of point C in the middle; Figure: 1, filter box; 2, support ring; 3, support foot; 4, pipe; 5, filter plate; 6, baffle; 7, first feed port; 8, first motor; 9, heating tube; 10, heating wire; 11, support platform; 12, feed cavity; 13, second feed port; 14, fixing ring; 15, cavity; 16, first scraper; 17, mounting bracket; 18, toggle plate; 19, sleeve; 20, air inlet; 21, air inlet pipe; 22, single Directional valve; 23. Box; 24. Piston plate; 25. Piston rod; 26. Connecting shaft; 27. Second motor; 28. Crank; 29. Air outlet; 30. Guide ring; 31. Partition; 32. Guide ring; 33. Retaining ring; 34. Third discharge port; 35. Bracket; 36. Push plate; 37. Second scraper; 38. First rotating shaft; 39. Second rotating shaft; 40. Fan blade; 41. First bevel gear; 42. Second bevel gear. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figures 1 to 10 As shown, the present invention provides a technical solution, a dust filtering device for aminosulfonic acid production, comprising a filter box 1, the outer wall of the filter box 1 is fixedly connected to a support ring 2, the inner wall of the support ring 2 is equidistantly fixedly connected to a plurality of legs 3, the inner wall of the filter box 1 is fixedly connected to a filter plate 5, the top of the filter plate 5 is set as an annular inclined surface, and the bottom of the filter plate 5 is fixedly connected to a guide ring 32, and further comprising: a drying component for drying moisture from filtered aminosulfonic acid crystal particles and powder; an air blowing component for drying the circulating aminosulfonic acid crystal particles and powder with hot air; a material diverting component for preventing the filter plate 5 from being blocked by aminosulfonic acid crystal powder; the drying component comprises a pipe 4, the pipe 4 is fixedly mounted on the inner wall of the filter box 1, the inner wall of the pipe 4 is fixedly connected to a baffle 6, the bottom of the baffle 6 is set as an inclined surface, and a first discharge port 7 is opened at the bottom of the inclined surface of the baffle 6, the top of the baffle 6 is fixedly connected to a first motor 8, the output end of the first motor 8 extends to the interior of the pipe 4 and is fixedly connected to a heating pipe 9, and a heating wire 10 is provided inside the heating pipe 9.

[0025] Through the above technical solution, the crushed sulfamic acid crystal particles and powder are poured onto the baffle 6, and the sulfamic acid crystal particles and powder fall into the pipe 4 along the first discharge port 7. The heating wire 10 is started to heat and dry the sulfamic acid crystal particles and powder falling into the pipe 4. The sulfamic acid crystal particles and powder passing through the pipe 4 are dried and fall onto the filter plate 5 in the filter box 1, and slide along the inclined surface at the top of the filter plate 5. The sulfamic acid powder passes through the filter plate 5 and falls. The remaining sulfamic acid crystal particles fall from the end of the filter plate 5. The filtered sulfamic acid powder and the sulfamic acid crystal particles can be separated by the provided guide ring 32.

[0026] Specifically, a plurality of fixing rings 14 are fixedly connected to the outer wall of the heating tube 9 at equal intervals. The top and bottom of the fixing ring 14 are both set as annular arc surfaces. The inner wall of the fixing ring 14 is provided with a cavity 15, which is communicated with the heating tube 9.

[0027] Through the above technical solution, the cavity 15 is provided to store hot air in the heating tube 9. When the aminosulfonic acid crystal particles and powder fall, they slide along the curved surface at the top of the fixing ring 14. The hot air in the cavity 15 heats and dries the sliding aminosulfonic acid crystal particles and powder. The fixing ring 14 slows down the falling speed of the aminosulfonic acid crystal particles and powder, thereby preventing the aminosulfonic acid crystal particles and powder from falling too fast and being unable to be dried in time.

[0028] Specifically, several support platforms 11 are equidistantly fixedly connected to the inner wall of the pipe 4, the top of the support platform 11 is set as an annular arc surface, a feed cavity 12 is opened on the top of the support platform 11, and two second discharge ports 13 are symmetrically opened at the bottom of the support platform 11. Several groups of second discharge ports 13 are staggered installations, and two first scrapers 16 are symmetrically fixedly connected to the bottom of the fixing ring 14. The first scraper 16 extends to the inside of the feed cavity 12. Both sides of the first scraper 16 are fixedly connected to the mounting frame 17, and the inner wall of the mounting frame 17 is fixedly connected to the toggle plate 18, which is set to an arc shape.

[0029] Through the above technical solution, the sulfamic acid crystal particles and powder sliding along the top arc surface of the fixed ring 14 fall into the feeding cavity 12. Start the first motor 8 to drive the heating tube 9 to rotate, so that the fixed ring 14 rotates, driving the first scraper 16 to rotate, and stirring the sulfamic acid crystal particles and powder in the feeding cavity 12. When the sulfamic acid crystal particles and powder are stirred to the second blanking port 13, they fall from the second blanking port 13, thereby further delaying the flow rate of the sulfamic acid crystal particles and powder, giving sufficient drying time to the sulfamic acid crystal particles and powder. When the first scraper 16 rotates, it drives the stirring plate 18 to rotate, and shovels up the sulfamic acid crystal particles and powder through the arc surface at the top of the stirring plate 18, causing the sulfamic acid crystal particles and powder to roll on the support table 11, thereby heating and drying the sulfamic acid crystal particles and powder evenly, and avoiding incomplete volatilization of the moisture of the sulfamic acid crystal particles and powder accumulated below.

[0030] Specifically, the air-blowing assembly includes an air outlet 29 opened at the bottom of the heating tube 9. An air inlet 20 is opened on the outer wall of the heating tube 9. A sleeve 19 is rotatably connected to the outer wall of the heating tube 9. The air inlet 20 is located inside the sleeve 19. Two air inlet pipes 21 are symmetrically and fixedly connected to the inner wall of the pipe 4. One end of each of the two air inlet pipes 21 extends into the sleeve 19. A sleeve box 23 is fixedly connected to the bottom of the air inlet pipe 21. Two one-way valves 22 are symmetrically arranged on the inner wall of the air inlet pipe 21 with the sleeve box 23 as the center. Both of the two one-way valves 22 are opened in the direction of the sleeve 19. A piston plate 24 is slidably connected to the inner wall of the sleeve box 23. A piston rod 25 is fixedly connected to the bottom of the piston plate 24. The bottom of the piston rod 25 penetrates through the sleeve box 23. Two second motors 27 are symmetrically and fixedly connected to the outer wall of the pipe 4. The output end of the second motor 27 is fixedly connected to a crank 28. One side of the crank 28 is rotatably connected to a connecting shaft 26. The connecting shaft 26 is rotatably connected to the piston rod 25. A flow guide ring 30 is fixedly connected to the bottom of the heating tube 9. The inner wall of the flow guide ring 30 is arranged as an annular arc surface. A partition 31 is fixedly connected to the outer wall of the heating tube 9. The top of the flow guide ring 30 is located below the partition 31.

[0031] Through the above technical solution, the second motor 27 is started to drive the crank 28 to rotate. When the long end of the crank 28 rotates to the lower side, the connecting shaft 26 is pulled downward, causing the piston rod 25 to move downward, driving the piston plate 24 to move downward. Through the two check valves 22 provided, in cooperation with the pulling and pushing of the piston plate 24, the outside air enters the sleeve box 23 along the air inlet pipe 21. When the long end of the crank 28 rotates to the upper side, the connecting shaft 26 is pushed upward, causing the piston rod 25 to move upward, driving the piston plate 24 to move upward. Through the two check valves 22 provided, in cooperation with the extrusion of the piston plate 24, the air in the sleeve box 23 enters the sleeve 19 along the air inlet pipe 21. The air entering the sleeve 19 enters the heating pipe 9 along the air inlet 20. Through the extrusion of the outside air, the hot air in the heating pipe 9 flows downward. Thus, the hot air in the heating pipe 9 is discharged from the air outlet 29. When the hot air is discharged from the air outlet 29, due to the lower density of the hot air, it will float upward. Through the guiding of the inner wall arc surface of the flow guiding ring 30 and the blocking of the outer wall of the heating pipe 9, the hot air discharged from the air outlet 29 gradually flows upward to heat and dry the sulfamic acid crystal particles and powder falling in the pipe 4. The partition 31 provided prevents the sulfamic acid crystal particles and powder from falling into the flow guiding ring 30. When the hot air floats up to the fixed ring 14, through the blocking of the bottom inclined surface of the fixed ring 14, the upward floating speed of the hot air is delayed, prolonging the flow time of the hot air in the pipe 4. And through the guiding of the bottom inclined surface of the fixed ring 14, the hot air flows along the top of the feeding cavity 12. Thus, it is convenient to better heat and dry the sulfamic acid crystal particles and powder in the feeding cavity 12. Through the baffle 6 provided to block the top of the pipe 4, the residence time of the hot air in the pipe 4 after being discharged is prolonged.

[0032] Specifically, the top of the inner wall of the filter box 1 is rotatably connected with a second rotating shaft 39. The bottom of the second rotating shaft 39 is fixedly connected with a fan blade 40. The fan blade 40 is located above the flow guiding ring 30. The top of the second rotating shaft 39 penetrates through the filter box 1 and is fixedly connected with a second bevel gear 42. The outer wall of the output end of the second motor 27 is fixedly connected with a first bevel gear 41. The first bevel gear 41 is meshed with the second bevel gear 42.

[0033] Through the above technical solution, the sulfamic acid crystal particles and powder falling from the second discharge port 13 at the bottom fall on the arc surface at the top of the guide ring 30, and are guided by the arc surface at the top of the guide ring 30, so that the sulfamic acid crystal particles and powder fall on the highest point of the filter plate 5, thereby extending the filtering time of the sulfamic acid crystal particles and powder by the filter plate 5, and preventing the sulfamic acid crystal particles and powder from sliding off the inclined surface of the filter plate 5. When the second motor 27 is started, it drives the first bevel gear 41 to rotate, so that the second bevel gear 42 rotates. The second rotating shaft 39 is driven to rotate, so that the fan blades 40 rotate, and the fan blades 40 beat the aminosulfonic acid crystal particles and powder falling from the second feeding port 13, and shake off the powder adhering to the outside of the aminosulfonic acid crystal particles, so as to prevent the aminosulfonic acid powder from adhering to the aminosulfonic acid crystal particles after drying. In addition, as the fan blades 40 beat, the aminosulfonic acid crystal particles and powder falling from the second feeding port 13 are scattered everywhere, so as to prevent the aminosulfonic acid crystal particles and powder falling from the second feeding port 13 from concentrating on the filter plate 5 and affecting the filtering effect.

[0034] Specifically, the material-discharging assembly includes several retaining rings 33, which are fixedly installed at equal distances on the top of the filter plate 5. Two third material discharge ports 34 are symmetrically opened on the inner wall of the retaining ring 33, and several groups of third material discharge ports 34 are staggered. The bottom of the heating tube 9 is fixedly connected to a first rotating shaft 38, and the outer wall of the first rotating shaft 38 is fixedly connected to several brackets 35 at equal distances. Both ends of the bracket 35 are fixedly connected to a push plate 36; both sides of the push plate 36 are fixedly connected to a second scraper 37, the bottom of the second scraper 37 is in contact with the top of the filter plate 5, and the top of the second scraper 37 is set to an inclined surface.

[0035] Through the above technical solution, the aminosulfonic acid crystal particles and powder on the filter plate 5 are blocked by the set baffle ring 33, and the heating tube 9 rotates while driving the first rotating shaft 38 to rotate, so that the bracket 35 rotates, and drives the push plate 36 to rotate. The aminosulfonic acid crystal particles and powder are rotated on the filter plate 5 by the push plate 36. When the aminosulfonic acid crystal particles and powder are pushed to the third discharge port 34, they slide from the third discharge port 34 and are blocked by the baffle ring 33 of the next layer, thereby extending the filtering time of the aminosulfonic acid crystal particles and powder by the filter plate 5, and preventing the powder from being separated from the aminosulfonic acid crystal particles and sliding off the filter plate 5 in the future. When the push plate 36 rotates, it drives the second scraper 37 to rotate in contact with the top of the filter plate 5, and prevents the aminosulfonic acid powder from clogging the filter plate 5.

[0036] An operating method for a dust filtration device for sulfamic acid production is provided. The operating method is applicable to the above-mentioned dust filtration device for sulfamic acid production. The operating method steps are as follows: S1: Pour the crushed sulfamic acid crystal particles and powder into the pipe 4, start the heating wire 10, and heat and dry the sulfamic acid crystal particles and powder falling into the pipe 4; S2: Start the first motor 8 to drive the first scraper 16 to rotate, stir the sulfamic acid crystal particles and powder in the feeding chamber 12, and make the sulfamic acid crystal particles and powder discharge slowly. S3: Start the second motor 27 to control the piston plate 24 to reciprocate up and down, so that the hot air in the heating pipe 9 is discharged from the air outlet 29, and heat and dry the sulfamic acid crystal particles and powder falling in the pipeline 4.

[0037] During use, the crushed sulfamic acid crystal particles and powder are poured onto the baffle 6. The sulfamic acid crystal particles and powder fall into the pipe 4 along the first feeding port 7. The heating wire 10 is started to heat and dry the falling sulfamic acid crystal particles and powder in the pipe 4. The cavity 15 provided can store the hot air in the heating pipe 9. When the sulfamic acid crystal particles and powder fall, they slide along the arc surface at the top of the fixed ring 14. The hot air in the cavity 15 heats and dries the sliding sulfamic acid crystal particles and powder. The fixed ring 14 delays the falling speed of the sulfamic acid crystal particles and powder, preventing the sulfamic acid crystal particles and powder from falling too fast to be dried in time. The sulfamic acid crystal particles and powder sliding along the arc surface at the top of the fixed ring 14 fall into the feeding cavity 12. The first motor 8 is started to drive the heating pipe 9 to rotate, causing the fixed ring 14 to rotate and driving the first scraper 16 to rotate, stirring the sulfamic acid crystal particles and powder in the feeding cavity 12. When the sulfamic acid crystal particles and powder are stirred to the second feeding port 13, they fall from the second feeding port 13, thereby further delaying the flow rate of the sulfamic acid crystal particles and powder and giving the sulfamic acid crystal particles and powder sufficient drying time. When the first scraper 16 rotates, it drives the stirring plate 18 to rotate. The sulfamic acid crystal particles and powder are shoveled up by the arc surface at the top of the stirring plate 18, causing the sulfamic acid crystal particles and powder to roll on the support table 11, thereby heating and drying the sulfamic acid crystal particles and powder evenly and preventing the moisture of the sulfamic acid crystal particles and powder piled up below from evaporating completely. The second motor 27 is started to drive the crank 28 to rotate. When the long end of the crank 28 rotates downward, it pulls the connecting shaft 26 downward, causing the piston rod 25 to move downward and driving the piston plate 24 to move downward. Through the two check valves 22 provided, with the pulling and pushing of the piston plate 24, the outside air enters the sleeve box 23 along the air inlet pipe 21. When the long end of the crank 28 rotates upward, it pushes the connecting shaft 26 upward, causing the piston rod 25 to move upward and driving the piston plate 24 to move upward. Through the two check valves 22 provided, with the extrusion of the piston plate 24, the gas in the sleeve box 23 enters the sleeve 19 along the air inlet pipe 21. The gas entering the sleeve 19 enters the heating pipe 9 along the air inlet 20. Through the extrusion of the outside air, the hot air in the heating pipe 9 flows downward. Thus, the hot air in the heating pipe 9 is discharged from the air outlet 29. When the hot air is discharged from the air outlet 29, due to the lower density of the hot air, it will float upward. Guided by the inner wall arc surface of the diversion ring 30 and blocked by the outer wall of the heating pipe 9, the hot air discharged from the air outlet 29 gradually flows upward to heat and dry the sulfamic acid crystal particles and powder falling in the pipe 4. When the hot air floats up to the fixed ring 14, blocked by the bottom inclined surface of the fixed ring 14, the upward floating speed of the hot air is delayed, extending the flow time of the hot air in the pipe 4. And guided by the bottom inclined surface of the fixed ring 14, the hot air flows along the top of the feeding cavity 12.This facilitates better heating and drying of the aminosulfonic acid crystal particles and powder in the feed chamber 12. The baffle 6 blocks the top of the pipe 4, thereby extending the residence time of the hot gas in the pipe 4 after discharge. The aminosulfonic acid crystal particles and powder falling from the second discharge port 13 at the bottom fall on the arc surface at the top of the guide ring 30, and are guided by the arc surface at the top of the guide ring 30 so that the aminosulfonic acid crystal particles and powder fall on the highest point of the filter plate 5, thereby extending the filtering time of the aminosulfonic acid crystal particles and powder by the filter plate 5, and avoiding the aminosulfonic acid crystal particles and powder from filtering. The particles and powder slide down the inclined surface of the filter plate 5, and the second motor 27 is started and drives the first bevel gear 41 to rotate, which drives the second bevel gear 42 to rotate, drives the second rotating shaft 39 to rotate, and rotates the fan blade 40. The fan blade 40 beats the sulfamic acid crystal particles and powder falling from the second discharge port 13, and shakes off the powder adhering to the outside of the sulfamic acid crystal particles, so as to prevent the sulfamic acid powder from adhering to the sulfamic acid crystal particles after drying. As the fan blade 40 beats, the sulfamic acid crystal particles and powder falling from the second discharge port 13 are The powder is scattered everywhere to prevent the aminosulfonic acid crystal particles and powder falling from the second feeding port 13 from concentrating on the filter plate 5 and affecting the filtering effect. The aminosulfonic acid powder passes through the filter plate 5 and falls, and the remaining aminosulfonic acid crystal particles fall from the end of the filter plate 5. The aminosulfonic acid crystal particles and powder on the filter plate 5 are blocked by the provided baffle ring 33. The heating tube 9 rotates while driving the first rotating shaft 38 to rotate, causing the bracket 35 to rotate, driving the push plate 36 to rotate, and the aminosulfonic acid crystal particles and powder are rotated on the filter plate 5 by the push plate 36. When the aminosulfonic acid powder falls through the filter plate 5, the remaining aminosulfonic acid crystal particles fall from the end of the filter plate 5. When the sulfonic acid crystal particles and powder are pushed to the third discharge port 34, they slide down from the third discharge port 34 and are then blocked by the baffle ring 33 on the next layer. This prolongs the filtering time of the sulfamic acid crystal particles and powder by the filter plate 5, preventing the powder from sliding down the filter plate 5 before it can separate from the sulfamic acid crystal particles. As the push plate 36 rotates, it drives the second scraper 37 to rotate against the top of the filter plate 5, preventing the sulfamic acid powder from clogging the filter plate 5. The guide ring 32 is provided to separate the filtered sulfamic acid powder from the sulfamic acid crystal particles.

[0038] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust filtration device for the production of sulfamic acid, comprising a filtration box (1), an outer wall of the filtration box (1) is fixedly connected with a support ring (2), an inner wall of the support ring (2) is fixedly connected with a plurality of supporting feet (3) at equal intervals, an inner wall of the filtration box (1) is fixedly connected with a filter plate (5), a top of the filter plate (5) is arranged as an annular inclined surface, a bottom of the filter plate (5) is fixedly connected with a guide ring (32), characterized in that, Also includes: Drying component, used to dry out moisture from filtered aminosulfonic acid crystal particles and powder; The air blowing component is used to dry the circulating sulfamic acid crystal particles and powder with hot air; The material dispensing assembly is used to prevent the filter plate (5) from being blocked by sulfamic acid crystal powder.

2. The dust filtration device for the production of sulfamic acid according to claim 1, wherein, The drying component comprises a pipe (4), the pipe (4) being fixedly mounted on the inner wall of the filter box (1), the inner wall of the pipe (4) being fixedly connected to a baffle (6), the bottom of the baffle (6) being arranged as an inclined surface, the bottom of the inclined surface of the baffle (6) being provided with a first discharge port (7), the top of the baffle (6) being fixedly connected to a first motor (8), the output end of the first motor (8) extending to the interior of the pipe (4) and being fixedly connected to a heating pipe (9), the interior of the heating pipe (9) being provided with a heating wire (10).

3. The dust filtration device for the production of sulfamic acid according to claim 2, characterized in that, The outer wall of the heating tube (9) is fixedly connected to a plurality of fixing rings (14) at equal intervals. The top and bottom of the fixing ring (14) are both configured as annular arc surfaces. The inner wall of the fixing ring (14) is provided with a cavity (15), and the cavity (15) is communicated with the heating tube (9).

4. The dust filtering device for the production of sulfamic acid according to claim 3, characterized in that, The inner wall of the pipe (4) is equidistantly fixedly connected to a plurality of support platforms (11), the top of the support platform (11) is set as an annular arc surface, the top of the support platform (11) is provided with a feed cavity (12), the bottom of the support platform (11) is symmetrically provided with two second discharge ports (13), and several groups of the second discharge ports (13) are staggered. The bottom of the fixing ring (14) is symmetrically fixedly connected to two first scrapers (16), the first scrapers (16) extend to the inside of the feed cavity (12), both sides of the first scraper (16) are fixedly connected to a mounting frame (17), the inner wall of the mounting frame (17) is fixedly connected to a toggle plate (18), and the toggle plate (18) is set as an arc.

5. The dust filtration device for the production of sulfamic acid according to claim 4, characterized in that, The air-blowing assembly includes an air outlet (29), the air outlet (29) is opened at the bottom of the heating pipe (9), an air inlet (20) is opened on the outer wall of the heating pipe (9), a sleeve (19) is rotatably connected to the outer wall of the heating pipe (9), the air inlet (20) is located inside the sleeve (19), two air inlet pipes (21) are symmetrically and fixedly connected to the inner wall of the pipe (4), one ends of the two air inlet pipes (21) both extend into the inside of the sleeve (19), a sleeve box (23) is fixedly connected to the bottom of the air inlet pipe (21), two one-way valves (22) are symmetrically arranged on the inner wall of the air inlet pipe (21) with the sleeve box (23) as the center, both of the two one-way valves (22) are opened towards the direction of the sleeve (19), a piston plate (24) is slidably connected to the inner wall of the sleeve box (23), a piston rod (25) is fixedly connected to the bottom of the piston plate (24), the bottom of the piston rod (25) penetrates through the sleeve box (23), two second motors (27) are symmetrically and fixedly connected to the outer wall of the pipe (4), a crank (28) is fixedly connected to the output end of the second motor (27), a connecting shaft (26) is rotatably connected to one side of the crank (28), and the connecting shaft (26) is rotatably connected to the piston rod (25).

6. The dust filtering device for the production of sulfamic acid according to claim 5, characterized in that, A flow guide ring (30) is fixedly connected to the bottom of the heating pipe (9), the inner wall of the flow guide ring (30) is arranged as an annular arc surface, a partition plate (31) is fixedly connected to the outer wall of the heating pipe (9), and the top of the flow guide ring (30) is located below the partition plate (31).

7. The dust filtration device for the production of sulfamic acid according to claim 6, characterized in that, A second rotating shaft (39) is rotatably connected to the top of the inner wall of the filter box (1), a fan blade (40) is fixedly connected to the bottom of the second rotating shaft (39), the fan blade (40) is located above the flow guide ring (30), the top of the second rotating shaft (39) penetrates through the filter box (1) and is fixedly connected to a second bevel gear (42), a first bevel gear (41) is fixedly connected to the outer wall of the output end of the second motor (27), and the first bevel gear (41) is meshed with the second bevel gear (42).

8. A dust filtration device for the production of sulfamic acid according to claim 7, characterized in that, The material pushing component includes a plurality of retaining rings (33), the retaining rings (33) are fixedly installed at equal intervals on the top of the filter plate (5), two third material discharging openings (34) are symmetrically opened on the inner wall of the retaining ring (33), several groups of the third material discharging openings (34) are installed in a staggered manner, a first rotating shaft (38) is fixedly connected to the bottom of the heating pipe (9), and a plurality of brackets (35) are fixedly connected to the outer wall of the first rotating shaft (38) at equal intervals, and push plates (36) are fixedly connected to both ends of the bracket (35).

9. The dust filtration device for the production of sulfamic acid according to claim 8, characterized in that, Second scraping plates (37) are fixedly connected to both sides of the push plate (36), the bottom of the second scraping plate (37) is attached to the top of the filter plate (5), and the top of the second scraping plate (37) is arranged as an inclined surface.

10. A method for operating a dust filtration device for the production of sulfamic acid, which is applicable to the dust filtration device for the production of sulfamic acid described in claim 9 above, characterized in that: The operation method steps are as follows:[[]] S1: Pour the crushed sulfamic acid crystal particles and powder into the pipe (4), start the heating wire (10), and heat and dry the sulfamic acid crystal particles and powder falling in the pipe (4). S2: Start the first motor (8) to drive the first scraper (16) to rotate, stir the sulfamic acid crystal particles and powder in the feeding chamber (12), and make the sulfamic acid crystal particles and powder discharge slowly. S3: Start the second motor (27) to control the piston plate (24) to reciprocate up and down, so that the hot air in the heating pipe (9) is discharged from the air outlet (29) to heat and dry the sulfamic acid crystal particles and powder falling in the pipeline (4).

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