A dust filtering device for sulfamic acid production and its operating method

Abstract

The present invention belongs to the field of aminosulfonic acid production, and specifically relates to a dust filtering device for aminosulfonic acid production, comprising a filter box, wherein the outer wall of the filter box is fixedly connected to a support ring, and the inner wall of the support ring is equidistantly fixedly connected to a plurality of support legs; the present invention provides a dust filtering device for aminosulfonic acid production and an operating method thereof, wherein aminosulfonic acid crystal particles and powder falling in a pipeline are heated and dried by a heating wire, the aminosulfonic acid crystal particles and powder slide along the arc surface at the top of the fixed ring, the sliding aminosulfonic acid crystal particles and powder are heated and dried by hot air in a cavity, the falling aminosulfonic acid crystal particles and powder are blocked by a feed chamber, a first scraper is controlled to rotate by a first motor, and the aminosulfonic acid crystal particles and powder in the feed chamber are moved, and when the aminosulfonic acid crystal particles and powder are moved to a second discharge port, they fall from the second discharge port, thereby further slowing down the circulation speed of the aminosulfonic acid crystal particles and powder.

Description

Technical Field

[0001] The invention belongs to the field of aminosulfonic acid production, in particular to a dust filtering device for aminosulfonic acid production and an operating method thereof. Background Art

[0002] Sulfamic acid is an organic compound containing amino and sulfonic acid groups. It is highly soluble and dissolves quickly in water. It is often used as an intermediate in fertilizers and industrial chemicals. It is also used in the synthesis of herbicides, fire retardants, sweeteners, preservatives, metal cleaners, and other chemicals, making it a common chemical raw material. In compound fertilizers, sulfamic acid, as a nitrogen source, can promote plant growth and improve soil nutrient availability. Its solubility allows sulfamic acid to quickly release nitrogen, providing plants with the nitrogen fertilizer they need, thereby improving fertilizer efficiency and crop yields.

[0003] During the production process of aminosulfonic acid, solid crystals need to be formed through cooling crystallization. If the particle size of the aminosulfonic acid crystals after crystallization and drying is large, they need to be crushed to the target particle size by a grinder. During the mechanical crushing process, the high-speed rotating blades or grinding media crush the crystals, generating a large amount of dust. After the crushing is completed, the aminosulfonic acid crystal particles need to be separated from the dust. Most existing technologies use filter screens or filter bags to filter the dust. However, aminosulfonic acid dust has strong hygroscopicity and easily forms paste-like crystals when it encounters water vapor, which accumulates in filter bags, pipes or hoppers, resulting in increased system resistance or even shutdown. When filtering mixed crystals and dust, if the amount of dust in some areas is large, it is easy to accumulate together and cause clogging of the filter screen. In addition, trace liquid water is easily precipitated on the surface of the crushed aminosulfonic acid crystal particles, causing a large amount of dust to adhere to the aminosulfonic acid crystal particles. When filtering the dust, the dust adhered to the aminosulfonic acid crystal particles cannot be effectively filtered out.

[0004] To this end, the present invention provides a dust filtering device for producing sulfamic acid and an operating method thereof. Summary of the Invention

[0005] In order to make up for the shortcomings of the existing technology and solve the problem that the existing technology mostly filters dust through filter screens or filter bags, however, aminosulfonic acid dust has strong hygroscopicity and easily forms paste-like crystals when it encounters water vapor, which accumulates in filter bags, pipes or hoppers, resulting in increased system resistance or even shutdown. In addition, when filtering mixed crystals and dust, if the amount of dust in some areas is large, it is easy to accumulate together and cause blockage of the filter screen. In addition, a small amount of liquid water is easily precipitated on the surface of the crushed aminosulfonic acid crystal particles, resulting in a large amount of dust adhering to the aminosulfonic acid crystal particles. When filtering dust, the dust adhering to the aminosulfonic acid crystal particles cannot be effectively filtered out. The present invention provides a dust filtering device for aminosulfonic acid production and an operating method thereof.

[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:

[0007] Drying component, used to dry out moisture from filtered aminosulfonic acid crystal particles and powder;

[0008] The air blowing component is used to dry the circulating sulfamic acid crystal particles and powder with hot air;

[0009] The material stripping assembly is used to prevent the filter plate from being blocked by sulfamic acid crystal powder.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] Preferably, the blowing assembly includes an air outlet, the air outlet is opened at the bottom of the heating pipe, the outer wall of the heating pipe is provided with an air inlet, the outer wall of the heating pipe is rotatably connected to a sleeve, the air inlet is located inside the sleeve, the inner wall of the pipe is symmetrically fixedly connected to two air inlet pipes, one end of the two air inlet pipes extends to the inside of the sleeve, the bottom of the air inlet pipe is fixedly connected to a sleeve, the inner wall of the air inlet pipe is symmetrically provided with two one-way valves with the sleeve as the center, the two one-way valves are opened in the direction of the sleeve, the inner wall of the sleeve is slidably connected to a piston plate, the bottom of the piston plate is fixedly connected to a piston rod, the bottom of the piston rod passes through the sleeve, the outer wall of the pipe is symmetrically fixedly connected to two second motors, 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, and the connecting shaft is rotatably connected to the piston rod.

[0014] Preferably, a guide ring is fixedly connected to the bottom of the heating tube, the inner wall of the guide ring is set as an annular arc surface, the outer wall of the heating tube is fixedly connected to a partition, and the top of the guide ring is located below the partition.

[0015] Preferably, the top of the inner wall of the filter box is rotatably connected to the second rotating shaft, the bottom of the second rotating shaft is fixedly connected to the fan blade, the fan blade is located above the guide ring, the top of the second rotating shaft passes through the filter box and is fixedly connected to the second bevel gear, the outer wall of the output end of the second motor is fixedly connected to the first bevel gear, and the first bevel gear is meshed with the second bevel gear.

[0016] Preferably, the material removal assembly includes several retaining rings, which are fixedly installed at equal distances on the top of the filter plate, and the inner wall of the retaining ring is symmetrically provided with two third material discharge openings, and several groups of the third material discharge openings are staggered. The bottom of the heating tube is fixedly connected to the first rotating shaft, and the outer wall of the first rotating shaft is fixedly connected to several brackets at equal distances, and both ends of the bracket are fixedly connected to push plates.

[0017] Preferably, second scrapers are fixedly connected to both sides of the push plate, the bottom of the second scraper is in contact with the top of the filter plate, and the top of the second scraper is set as an inclined surface.

[0018] 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:

[0019] S1: Pour the crushed sulfamic acid crystal particles and powder into the pipe, start the heating wire to heat and dry the sulfamic acid crystal particles and powder falling into the pipe;

[0020] S2: Starting the first motor to drive the first scraper to rotate, stirring the aminosulfonic acid crystal particles and powder in the feeding chamber, so that the aminosulfonic acid crystal particles and powder are slowly discharged;

[0021] S3: Start the second motor to control the piston plate to move up and down reciprocatingly, so that the hot air in the heating tube is discharged from the air outlet, heating and drying the aminosulfonic acid crystal particles and powder falling in the tube.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The dust filtering device for sulfamic acid production and the operating method thereof described in the present invention heat a heating tube via a heating wire, thereby heating and drying sulfamic acid crystal particles and powder falling in the tube. A cavity is provided to store hot air in the heating tube. When the sulfamic acid crystal particles and powder fall, they slide along the curved surface at the top of the fixed ring, and the hot air in the cavity heats and dries the falling sulfamic acid crystal particles and powder.

[0024] 2. The dust filtering device for aminosulfonic acid production described in the present invention and the operation method thereof, blocks the falling aminosulfonic acid crystal particles and powder by a feed chamber, controls the rotation of the first scraper by a first motor, and stirs the aminosulfonic acid crystal particles and powder in the feed chamber. When the aminosulfonic acid crystal particles and powder are stirred to the second discharge port, they fall from the second discharge port, thereby further slowing down the circulation speed of the aminosulfonic acid crystal particles and powder, giving the aminosulfonic acid crystal particles and powder sufficient drying time, and when the first scraper rotates, it also drives the stirring plate to rotate, and the aminosulfonic acid crystal particles and powder are scooped up by the curved surface on the top of the stirring plate, so that the aminosulfonic acid crystal particles and powder are rolled on the support table, thereby evenly heating and drying the aminosulfonic acid crystal particles and powder, and preventing the aminosulfonic acid crystal particles and powder accumulated below from evaporating moisture insufficiently.

[0025] 3. The dust filtering device for aminosulfonic acid production and the operating method thereof described in the present invention discharge the hot air in the heating pipe downwardly through the air blowing component, and the hot air discharged from the air outlet gradually flows upward through the guidance of the arc surface of the inner wall of the guide ring and the obstruction of the outer wall of the heating pipe, thereby heating and drying the aminosulfonic acid crystal particles and powder falling in the pipe. When the hot air floats to the fixed ring, it is blocked by the inclined surface of the bottom of the fixed ring, which slows down the floating speed of the hot air and extends the circulation time of the hot air in the pipe. Moreover, it is guided by the inclined surface of the bottom of the fixed ring and flows along the top of the feed chamber, thereby facilitating better heating and drying of the aminosulfonic acid crystal particles and powder in the feed chamber.

[0026] 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.

[0027] 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

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 This is a three-dimensional diagram of the filter box and pipeline used in conjunction with each other;

[0030] Figure 2 This is a three-dimensional diagram of the filter box and filter plate of the present invention in cooperation with each other;

[0031] Figure 3 This is an exploded view of the pipe and guide ring of the present invention in cooperation with each other;

[0032] Figure 4 This is a cross-sectional view of the filter plate and guide ring of the present invention in cooperation with each other;

[0033] 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;

[0034] Figure 6 This is a three-dimensional diagram of the coordinated use of several second feed openings of the present invention;

[0035] Figure 7 This is a three-dimensional diagram of the coordinated use of several third feed openings of the present invention;

[0036] Figure 8 This invention Figure 4 Enlarged view of point A in the middle;

[0037] Figure 9 This invention Figure 4 Enlarged view of point B in the middle;

[0038] Figure 10 This invention Figure 4 Enlarged view of point C in the middle;

[0039] 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

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] Through the above technical solution, the aminosulfonic acid crystal particles and powder sliding down the curved surface at the top of the fixed ring 14 fall into the feed chamber 12, and the first motor 8 is started to drive the heating tube 9 to rotate, so that the fixed ring 14 rotates, and the first scraper 16 is driven to rotate, and the aminosulfonic acid crystal particles and powder in the feed chamber 12 are moved. When the aminosulfonic acid crystal particles and powder are moved to the second discharge port 13, they fall from the second discharge port 13, thereby further slowing down the circulation speed of the aminosulfonic acid crystal particles and powder, giving the aminosulfonic acid crystal particles and powder sufficient drying time, and when the first scraper 16 rotates, it drives the toggle plate 18 to rotate, and the aminosulfonic acid crystal particles and powder are shoveled up by the curved surface at the top of the toggle plate 18, so that the aminosulfonic acid crystal particles and powder roll on the support platform 11, thereby heating and drying the aminosulfonic acid crystal particles and powder evenly, and avoiding the aminosulfonic acid crystal particles and powder accumulated below from evaporating moisture insufficiently.

[0047] Specifically, the air blowing assembly includes an air outlet 29, which is opened at the bottom of the heating tube 9. The outer wall of the heating tube 9 is provided with an air inlet 20. The outer wall of the heating tube 9 is rotatably connected to the sleeve 19. The air inlet 20 is located inside the sleeve 19. The inner wall of the pipe 4 is symmetrically fixedly connected to two air inlet pipes 21. One end of the two air inlet pipes 21 extends to the inside of the sleeve 19. The bottom of the air inlet pipe 21 is fixedly connected to a sleeve box 23. The inner wall of the air inlet pipe 21 is symmetrically provided with two one-way valves 22 with the sleeve box 23 as the center. The two one-way valves 22 are opened in the direction of the sleeve 19. The sleeve box 23 The inner wall of the pipe 4 is slidably connected to a piston plate 24, the bottom of the piston plate 24 is fixedly connected to a piston rod 25, the bottom of the piston rod 25 passes through the sleeve 23, the outer wall of the pipe 4 is symmetrically fixedly connected to two second motors 27, 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, and the connecting shaft 26 is rotatably connected to the piston rod 25; the bottom of the heating tube 9 is fixedly connected to a guide ring 30, the inner wall of the guide ring 30 is set to an annular arc surface, the outer wall of the heating tube 9 is fixedly connected to a partition 31, and the top of the guide ring 30 is located below the partition 31.

[0048] By 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 bottom, the connecting shaft 26 is pulled downward, so that the piston rod 25 moves downward, and the piston plate 24 moves downward. Through the two one-way valves 22 provided, the piston plate 24 is pulled and pulled, so that 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 top, the connecting shaft 26 is pushed upward, so that the piston rod 25 moves upward, and the piston plate 24 moves upward. Through the two one-way valves 22 provided, the piston plate 24 is squeezed, so that 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 tube 9 along the air inlet 20. The hot air in the heating tube 9 is squeezed downward by the outside air, and the hot air in the heating tube 9 is discharged from the air outlet 29. When the hot air is discharged from the air outlet 29, due to its low density, it will float upward, and will be guided by the arc surface of the inner wall of the guide ring 30 and blocked by the outer wall of the heating tube 9, so that the hot air discharged from the air outlet 29 will gradually flow upward, heating and drying the aminosulfonic acid crystal particles and powder falling in the pipe 4. The provided partition 31 prevents the aminosulfonic acid crystal particles and powder from falling into the guide ring 30. When the hot air floats to the fixed ring 14, it is blocked by the bottom inclined surface of the fixed ring 14, which slows down the floating speed of the hot air and extends the circulation time of the hot air in the pipe 4. The hot air is guided by the bottom inclined surface of the fixed ring 14, so that the hot air flows along the top of the feed chamber 12, thereby facilitating better heating and drying of the aminosulfonic acid crystal particles and powder in the feed chamber 12. The provided baffle 6 blocks the top of the pipe 4, thereby extending the residence time of the hot air in the pipe 4 after discharge.

[0049] Specifically, the top of the inner wall of the filter box 1 is rotatably connected to the second rotating shaft 39, the bottom of the second rotating shaft 39 is fixedly connected to the fan blade 40, the fan blade 40 is located above the guide ring 30, the top of the second rotating shaft 39 passes through the filter box 1 and is fixedly connected to the second bevel gear 42, the outer wall of the output end of the second motor 27 is fixedly connected to the first bevel gear 41, and the first bevel gear 41 is meshed with the second bevel gear 42.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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:

[0054] 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;

[0055] S2: Starting the first motor 8 to drive the first scraper 16 to rotate, stirring the aminosulfonic acid crystal particles and powder in the feeding chamber 12, so that the aminosulfonic acid crystal particles and powder are slowly discharged;

[0056] S3: Start the second motor 27 to control the piston plate 24 to move up and down reciprocatingly, so that the hot air in the heating tube 9 is discharged from the air outlet 29, heating and drying the aminosulfonic acid crystal particles and powder falling in the pipe 4.

[0057] During use, 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, and the heating wire 10 is started to heat and dry the sulfamic acid crystal particles and powder falling in the pipe 4. The cavity 15 provided can store the hot air in the heating tube 9. When the sulfamic acid crystal particles and powder fall, they slide along the arc surface at the top of the fixing ring 14. The hot air in the cavity 15 heats and dries the sliding sulfamic acid crystal particles and powder. The fixing ring 14 delays the falling speed of the sulfamic acid crystal particles and powder, thereby preventing the sulfamic acid crystal particles and powder from falling too fast and being unable to be dried in time. The sulfamic acid crystal particles sliding along the arc surface at the top of the fixing ring 14 The powder falls into the feed chamber 12, the first motor 8 is started, the heating tube 9 is driven to rotate, the fixed ring 14 is rotated, and the first scraper 16 is driven to rotate, and the aminosulfonic acid crystal particles and powder in the feed chamber 12 are moved. When the aminosulfonic acid crystal particles and powder are moved to the second discharge port 13, they fall from the second discharge port 13, thereby further delaying the circulation speed of the aminosulfonic acid crystal particles and powder, giving the aminosulfonic acid crystal particles and powder sufficient drying time, when the first scraper 16 rotates, it also drives the toggle plate 18 to rotate, and the aminosulfonic acid crystal particles and powder are scooped up by the arc surface at the top of the toggle plate 18, so that the aminosulfonic acid crystal particles and powder roll on the support table 11, thereby heating and drying the aminosulfonic acid crystal particles and powder evenly, avoiding In order to prevent the aminosulfonic acid crystal particles and powder moisture accumulated at the bottom from volatilizing completely, the second motor 27 is started to drive the crank 28 to rotate. When the long end of the crank 28 rotates to the bottom, the connecting shaft 26 is pulled downward to move the piston rod 25 downward, driving the piston plate 24 to move downward. Through the two one-way valves 22 provided, the piston plate 24 is pulled to allow the outside air to enter the sleeve 23 along the air inlet pipe 21. When the long end of the crank 28 rotates to the top, the connecting shaft 26 is pushed upward to move the piston rod 25 upward, driving the piston plate 24 upward. Through the two one-way valves 22 provided, the piston plate 24 is squeezed to allow the gas in the sleeve 23 to enter the sleeve 19 along the air inlet pipe 21. The gas enters the heating tube 9 along the air inlet 20, and the hot gas in the heating tube 9 flows downward through the extrusion of the external air, and is thus discharged from the air outlet 29. When the hot gas is discharged from the air outlet 29, due to its low density, it will float upward, and after being guided by the arc surface of the inner wall of the guide ring 30 and blocked by the outer wall of the heating tube 9, the hot gas discharged from the air outlet 29 gradually flows upward, heating and drying the aminosulfonic acid crystal particles and powder falling in the pipe 4. When the hot gas floats up to the fixing ring 14, it is blocked by the inclined surface at the bottom of the fixing ring 14, which slows down the floating speed of the hot gas and prolongs the circulation time of the hot gas in the pipe 4. After being guided by the inclined surface at the bottom of the fixing ring 14, the hot gas flows along the top of the feed chamber 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.

[0058] 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.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are 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 cannot be understood as limiting the scope of protection of the present invention.

[0060] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust filtering device for aminosulfonic acid production, comprising a filter box (1), wherein 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 fixedly connected to a plurality of legs (3) at equal intervals, the inner wall of the filter box (1) is fixedly connected to a filter plate (5), the top of the filter plate (5) is arranged as an annular inclined surface, and the bottom of the filter plate (5) is fixedly connected to 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; A material shifting assembly for preventing the filter plate (5) from being clogged by sulfamic acid crystal powder; 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); The air blowing assembly includes an air outlet (29), the air outlet (29) is opened at the bottom of the heating tube (9), the outer wall of the heating tube (9) is provided with an air inlet (20), the outer wall of the heating tube (9) is rotatably connected to a sleeve (19), the air inlet (20) is located inside the sleeve (19), the inner wall of the pipe (4) is symmetrically fixedly connected to two air inlet pipes (21), one end of each of the two air inlet pipes (21) extends to the inside of the sleeve (19), the bottom of the air inlet pipe (21) is fixedly connected to a sleeve box (23), and the inner wall of the air inlet pipe (21) is symmetrically arranged with the sleeve box (23) as the center. Two one-way valves (22) are provided, and both of the one-way valves (22) are opened in the direction of the sleeve (19); the inner wall of the sleeve (23) is slidably connected to a piston plate (24); the bottom of the piston plate (24) is fixedly connected to a piston rod (25); the bottom of the piston rod (25) passes through the sleeve (23); the outer wall of the pipe (4) is symmetrically fixedly connected to two second motors (27); 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); The bottom of the heating tube (9) is fixedly connected to a guide ring (30), the inner wall of the guide ring (30) is set as an annular arc surface, the outer wall of the heating tube (9) is fixedly connected to a partition (31), and the top of the guide ring (30) is located below the partition (31); The top of the inner wall of the filter box (1) is rotatably connected to a second rotating shaft (39), the bottom of the second rotating shaft (39) is fixedly connected to a fan blade (40), and the fan blade (40) is located above the guide ring (30). The top of the second rotating shaft (39) passes through the filter box (1) and is fixedly connected to a second bevel gear (42). The outer wall of the output end of the second motor (27) is fixedly connected to a first bevel gear (41), and the first bevel gear (41) is meshed with the second bevel gear (42).

2. A dust filtering device for sulfamic acid production according to claim 1, 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).

3. A dust filtering device for sulfamic acid production according to claim 2, 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.

4. A dust filtering device for sulfamic acid production according to claim 3, characterized in that: The material-dispensing assembly comprises a plurality of retaining rings (33), the retaining rings (33) being fixedly mounted at equal intervals on the top of the filter plate (5), the inner wall of the retaining ring (33) being symmetrically provided with two third material discharge openings (34), and a plurality of groups of the third material discharge openings (34) being staggeredly mounted, the bottom of the heating tube (9) being fixedly connected to a first rotating shaft (38), the outer wall of the first rotating shaft (38) being fixedly connected to a plurality of brackets (35) being fixedly mounted at equal intervals, and both ends of the brackets (35) being fixedly connected to push plates (36).

5. A dust filtering device for sulfamic acid production according to claim 4, characterized in that: Second scrapers (37) are fixedly connected to both sides of the push plate (36), 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 configured as an inclined surface.

6. An operating method for a dust filtration device for sulfamic acid production, the operating method being applicable to the dust filtration device for sulfamic acid production according to claim 5, characterized in that: The steps for this operation are as follows: S1: pouring the crushed aminosulfonic acid crystal particles and powder into the pipe (4), starting the heating wire (10), and heating and drying the aminosulfonic acid crystal particles and powder falling into the pipe (4); S2: starting the first motor (8) to drive the first scraper (16) to rotate, and to move the aminosulfonic acid crystal particles and powder in the feeding chamber (12), so that the aminosulfonic acid crystal particles and powder are slowly discharged; S3: Start the second motor (27) to control the piston plate (24) to move up and down reciprocatingly, so that the hot air in the heating tube (9) is discharged from the air outlet (29), and the aminosulfonic acid crystal particles and powder falling in the pipe (4) are heated and dried.

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