A crystal washing and filtering device for sulfamic acid production

Abstract

The utility model relates to the field of sulfamic acid production, especially to a crystal washing and filtering device for sulfamic acid production, which comprises a washing mechanism, a suction filtering mechanism arranged on one side of the washing mechanism, a driving mechanism arranged on the top of the washing mechanism, and a filtering mechanism. The rotation of the filtering cylinder drives the annular plate to rotate under the lifting seat, and the multiple push blocks on the top of the annular plate push the lifting arms one by one, which in turn drives the lifting seat and the lifting shaft to lift the center position of the filter cloth, thereby accelerating the rolling of the sulfamic acid crystals inside the filtering cylinder, and the multiple arc-shaped flaps outside the filtering cylinder are turned and opened under the action of the water flow, thereby accelerating the entry of the cleaning liquid into the filtering cylinder to flush the crystals. At this time, the washing of the crystals can be accelerated, and after the washing is completed, the arc-shaped flaps plug the filter holes of the filtering cylinder, thereby preventing the liquid from entering the inside of the filtering cylinder, and ensuring that the crystals are dried uniformly from top to bottom during suction filtering, thereby avoiding cracks on the surface of the crystals.

Description

Technical Field

[0001] This utility model relates to the field of aminosulfonic acid production, and in particular to a crystal washing and filtration device for aminosulfonic acid production. Background Technology

[0002] According to the patent document with publication number CN218610628U, the material is added to the filter frame in the washing tank through the feeding pipe. At this time, the rinsing structure sprays ethanol solution and drives the stirring head to stir and wash through the sliding rod. After the washing is completed, the filter frame and filter screen are moved up by the electric push rod, and then the water is discharged through the drain pipe. At the same time, the air pump structure works to achieve negative pressure filtration to filter the material dry. The patent document describes a process where, during the washing of crystals used in the production of para-aminosulfonic acid, a sliding rod drives a stirring head to rotate on top of a filter screen. The crystals on the filter screen move accordingly. During this stirring process, large crystal particles may accumulate between the stirring head and the filter screen, potentially scratching the screen and causing crystal leakage. Furthermore, during crystal filtration, the washing tank has a long, narrow structure, and the air pump used for filtration is located on one side. Crystals closer to the air pump may experience greater adsorption forces, while those further away may experience less. This difference in water loss rates between crystals near and far from the air pump can lead to cracks between crystals near the filtration location, potentially affecting the filtration and drying of crystals in other locations. Summary of the Invention

[0003] The purpose of this invention is to provide a crystal washing and filtration device for the production of aminosulfonic acid in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions: A crystal washing and filtration device for the production of aminosulfonic acid includes a washing mechanism, a suction filtration mechanism on one side of the washing mechanism, a driving mechanism on the top of the washing mechanism, and a filtration mechanism located at the center of the washing mechanism. The filtration mechanism includes a filter cylinder, an annular plate fixed to the top of the filter cylinder, multiple circumferentially distributed push blocks fixed to the top of the annular plate, a filter cloth fixed to the lower end of the filter cylinder, a lifting shaft fixed to the center of the filter cloth, one end of the lifting shaft extending out of the filter cylinder being rotatably connected to the bottom of the lifting seat, lifting arms fixed to both the front and rear sides of the lifting seat, a support frame provided on the lower side of the lifting seat, two guide columns fixed to the top of the support frame, multiple circumferentially distributed arc-shaped flaps provided on the outer side of the filter cylinder, and filter holes opened on the outer side of the filter cylinder at the positions of the arc-shaped flaps.

[0005] Preferably, the lifting seat has two guide holes, and the two guide columns of the support frame are slidably connected in the two guide holes of the lifting seat.

[0006] Preferably, each lifting arm has a wheel fixed at the end away from the lifting seat, and the wheel presses against the top of the annular plate.

[0007] Preferably, the washing mechanism includes a fixed frame, a washing tub is rotatably connected to the middle of the fixed frame, a flipping motor for driving the washing tub to flip is fixedly installed on the front side of the fixed frame, an inlet valve is fixedly installed on the upper side of the washing tub, and a drain valve is fixedly installed at the bottom of the washing tub.

[0008] Preferably, a rubber sealing ring is provided between the top of the annular plate and the fixed frame, both ends of the support frame are fixed to the top of the fixed frame, and the support frame is provided with a through hole between the two guide columns for the lifting shaft to pass through.

[0009] Preferably, the filtration mechanism includes a filtration box, a vacuum pump is fixed on one side of the filtration box, a filtration guide tube is fixed on the other side of the filtration box, a filtration valve is fixed at the other end of the filtration guide tube, a filtration pipe is fixed on the other side of the filtration valve, and an adsorption hood is fixed at one end of the filtration pipe that extends into the washing tub, with the adsorption hood located below the filter cloth on the lower side.

[0010] Preferably, the outer side of the filter cylinder is fixed with a support shaft at the position of the arc-shaped flap, and one end of the arc-shaped flap is sleeved on the outside of the support shaft. A torsion spring is provided between the support shaft and the arc-shaped flap, and the upper and lower ends of the torsion spring are fixedly connected to the support shaft and the arc-shaped flap respectively. The arc-shaped flap away from the support shaft is a wedge-shaped end.

[0011] The beneficial effects compared with the existing technology are as follows: The rotation of the filter cylinder drives the annular plate to rotate under the lifting seat, and the multiple push blocks on the top of the annular plate push the lifting arm one by one, which in turn causes the lifting arm to drive the lifting seat and lifting shaft to lift the center position of the filter cloth, thereby accelerating the rolling of the aminosulfonic acid crystals inside the filter cylinder. At the same time, the multiple arc-shaped flaps on the outside of the filter cylinder will flip open under the action of water flow, thereby accelerating the entry of cleaning liquid into the filter cylinder to rinse the crystals. This can speed up the washing of the crystals. After washing, the arc-shaped flaps will block the filter holes of the filter cylinder, thereby preventing liquid from entering the filter cylinder, thus ensuring that the crystals dry evenly from top to bottom during filtration, thereby preventing cracks from forming on the crystal surface. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1This is a perspective view of a crystal washing and filtration device for the production of aminosulfonic acid according to the present invention; Figure 2 This is a front view of a crystal washing and filtration device for the production of aminosulfonic acid as described in this utility model; Figure 3 yes Figure 2 Sectional view at point BB; Figure 4 This is a schematic diagram of the drive mechanism of a crystal washing and filtration device for the production of aminosulfonic acid according to the present invention; Figure 5 This is a schematic diagram of the annular plate and push block structure of a crystal washing and filtering device for aminosulfonic acid production according to the present invention; Figure 6 This is a schematic diagram of the lifting arm structure of a crystal washing and filtration device for aminosulfonic acid production according to the present invention; Figure 7 This is a schematic diagram of the support frame structure of a crystal washing and filtration device for aminosulfonic acid production according to the present invention; Figure 8 yes Figure 3 Sectional view at CC; Figure 9 yes Figure 8 A magnified view of a section at point I.

[0014] The annotations in the attached figures are explained as follows: 1. Filtration mechanism; 2. Drive mechanism; 3. Washing mechanism; 4. Vacuum filtration mechanism; 5. Support frame; 6. Liquid inlet valve; 11. Filter cylinder; 12. Annular plate; 13. Push block; 14. Filter cloth; 15. Lifting shaft; 16. Lifting seat; 17. Lifting arm; 18. Arc-shaped flap; 21. Gear ring; 22. Drive motor; 23. Drive gear; 24. Driven gear; 31. Washing tub; 32. Tilting motor; 33. Fixing frame; 41. Vacuum filtration pipe; 42. Vacuum filtration valve; 43. Vacuum filtration guide tube; 44. Vacuum filtration box; 45. Vacuum pump. Detailed Implementation

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. All electrical components mentioned in this document are electrically connected to an external main controller and 220V AC mains power, and the main controller can be a conventionally known device such as a computer that provides control.

[0016] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-9 As shown, a crystal washing and filtration device for the production of aminosulfonic acid includes a washing mechanism 3, a suction filtration mechanism 4 on one side of the washing mechanism 3, a driving mechanism 2 on the top of the washing mechanism 3, and a filtration mechanism 1 located at the center of the washing mechanism 3.

[0017] In this embodiment: the filter mechanism 1 includes a filter cylinder 11, an annular plate 12 is fixed to the top of the filter cylinder 11, and multiple circumferentially distributed push blocks 13 are fixed to the top of the annular plate 12. A filter cloth 14 is fixed to the lower end of the filter cylinder 11, and a lifting shaft 15 is fixed to the center of the filter cloth 14. One end of the lifting shaft 15 extending out of the filter cylinder 11 is rotatably connected to the bottom of the lifting seat 16. Lifting arms 17 are fixed to both the front and rear sides of the lifting seat 16. A support frame 5 is provided on the lower side of the lifting seat 16, and two guide columns are fixed to the top of the support frame 5. Multiple circumferentially distributed arc-shaped flaps 18 are provided on the outer side of the filter cylinder 11. Filter holes are opened on the outer side of the filter cylinder 11 at the positions of the arc-shaped flaps 18. Two guide holes are opened on the lifting seat 16, and the support... The two guide columns of frame 5 are slidably connected to the two guide holes of lifting seat 16. Each lifting arm 17 has a fixed wheel at the end away from lifting seat 16, and the wheel presses against the top of annular plate 12. The outer side of filter cylinder 11 is fixed with a support shaft at the position of arc-shaped flap 18, and one end of arc-shaped flap 18 is sleeved on the outside of the support shaft. A torsion spring is provided between the support shaft and arc-shaped flap 18, and the upper and lower ends of the torsion spring are fixedly connected to the support shaft and arc-shaped flap 18, respectively. The arc-shaped flap 18 is wedge-shaped at the end away from the support shaft. The filter cylinder 11 is used to drive the aminosulfonic acid crystals to be washed to rotate inside the washing mechanism 3. When the filter cylinder 11 rotates, the annular plate 12 drives multiple push blocks 13 to rotate synchronously. During this process, the multiple push blocks The rollers 13 will rotate one by one past the rollers of the lifting arm 17. At this time, the rollers will drive the lifting arm 17 to be lifted by the push block 13. Simultaneously, the lifting arm 17 will also drive the lifting seat 16 to move upward along the guide rod of the support frame 5. Then, the lifting seat 16 will drive the lifting shaft 15 to lift the center position of the filter cloth 14 upward. At this time, the crystals located at the center position of the filter cloth 14 will roll towards the inner wall of the filter cylinder 11. After the rollers rotate past the push block 13, the lifting arm 17 will drive the lifting seat 16 and the lifting shaft 15 to move downward. At this time, the center position of the filter cloth 14 will move downward and reset, and the crystals attached to the inner wall of the filter cylinder 11 will roll back towards the center of the filter cloth 14. While the filter cylinder 11 drives the annular plate 12 to rotate, some of the cleaning fluid... The system moves to the position between the wedge-shaped end of the arc-shaped flap 18 and the filter cylinder 11. At this point, due to the resistance of the cleaning liquid, the wedge-shaped end of the arc-shaped flap 18 will be pushed to rotate away from the filter cylinder 11 around the support shaft. Subsequently, the filter holes on the outside of the filter cylinder 11 are opened, allowing the cleaning liquid to enter the filter cylinder 11. Then, the constantly shaking crystals inside the filter cylinder 11 can be washed. After the crystal washing is completed, the filter cylinder 11 stops rotating. At this time, the torsion spring on the outside of the support shaft will drive the arc-shaped flap 18 to rotate and reset, thereby sealing the filter holes on the outside of the filter cylinder 11 with the arc-shaped flap 18. Then, when the suction filtration mechanism 4 is used to filter the crystals, it can prevent external gas from entering the position between the filter cylinder 11 and the washing tank 31.

[0018] In this embodiment: the washing mechanism 3 includes a fixed frame 33, a washing tub 31 is rotatably connected to the middle of the fixed frame 33, a flipping motor 32 for driving the washing tub 31 to flip is fixedly installed on the front side of the fixed frame 33, an inlet valve 6 is fixed on the upper side of the washing tub 31, a drain valve is fixed on the bottom of the washing tub 31, a rubber sealing ring is provided between the top of the annular plate 12 and the fixed frame 33, both ends of the support frame 5 are fixed to the top of the fixed frame 33, and the support frame 5 is provided with a through hole between the two guide columns for the lifting shaft 15 to pass through. The liquid for washing crystals is introduced into the washing tub 31 by the inlet valve 6. At this time, the aminosulfonic acid crystals inside the filter cylinder 11 are immersed in the washing liquid by the washing tub 31. After washing, the liquid inside the washing tub 31 is discharged through the drain valve. Then, the rotating part of the flipping motor 32 drives the washing tub 31 to flip around the connection position with the fixed frame 33, and then the washed and filtered crystals are poured out from the top of the filter cylinder 11.

[0019] In this embodiment: the drive mechanism 2 includes a gear ring 21, which is fixed on the outside of the filter cylinder 11 and located above the arc-shaped flap 18. The front side of the gear ring 21 is engaged with a drive gear 23 and a driven gear 24. Both the drive gear 23 and the driven gear 24 are rotatably connected to the top of the washing tub 31. A drive motor 22 for driving the drive gear 23 to rotate is fixedly installed on the front side of the top of the washing tub 31. The drive motor 22 drives the drive gear 23 to mesh with the gear ring 21, and the filter cylinder 11 rotates at the center position of the washing tub 31 through the cooperation of the driven gear 24 and the drive gear 23.

[0020] In this embodiment: the filtration mechanism 4 includes a filtration box 44, a vacuum pump 45 is fixed on one side of the filtration box 44, a filtration conduit 43 is fixed on the other side of the filtration box 44, a filtration valve 42 is fixed at the other end of the filtration conduit 43, a filtration tube 41 is fixed on the other side of the filtration valve 42, and an adsorption cover is fixed at one end of the filtration tube 41 that extends into the washing tub 31. The adsorption cover is located below the filter cloth 14. The vacuum pump 45 is used to evacuate the air inside the filtration box 44, thereby creating a low-pressure area inside the filtration box 44. At this time, the filtration valve 42 is opened to allow the filtration conduit 43 to draw air into the filtration tube 41. The adsorption cover of the filtration tube 41 extending into the washing tub 31 then draws air directly below the filter cloth 14, thereby filtering the cleaning liquid on the crystals inside the filter cylinder 11.

[0021] Working principle: First, the aminosulfonic acid crystals to be cleaned are poured into the filter cylinder 11. Simultaneously, the liquid for washing the aminosulfonic acid crystals is introduced into the washing tub 31 through the inlet valve 6, causing the washing liquid in the washing tub 31 to submerge the aminosulfonic acid crystals inside the filter cylinder 11. At this time, the rotating part of the drive motor 22 drives the drive gear 23 to mesh with the gear ring 21. Through the cooperation of the driven gear 24 and the drive gear 23, the filter cylinder 11 rotates at the center position of the washing tub 31. While the filter cylinder 11 rotates, the annular plate 12 drives multiple push blocks 13 to rotate synchronously. During this process, the multiple push blocks 13 rotate sequentially... As the lifting arm 17 rotates past the roller, it causes the lifting arm 17 to be lifted by the push block 13. Simultaneously, the lifting arm 17 causes the lifting seat 16 to move upwards along the guide rod of the support frame 5. The lifting seat 16 then causes the lifting shaft 15 to lift the center of the filter cloth 14 upwards. At this time, the crystals located at the center of the filter cloth 14 will roll towards the inner wall of the filter cartridge 11. After the roller passes the push block 13, the lifting arm 17 causes the lifting seat 16 and lifting shaft 15 to move downwards. The center of the filter cloth 14 then moves downwards and resets, and the crystals adhering to the inner wall of the filter cartridge 11 will roll back towards the center of the filter cloth 14. As the filter cartridge 11 rotates, driving the annular plate 12, some cleaning liquid enters the area between the wedge-shaped end of the arc-shaped flap 18 and the filter cartridge 11. Due to the resistance of the cleaning liquid, the wedge-shaped end of the arc-shaped flap 18 rotates away from the filter cartridge 11 around the support shaft. This opens the filter holes on the outside of the filter cartridge 11, allowing the cleaning liquid to enter and wash the constantly swaying crystals inside. After the crystal washing is complete, the filter cartridge 11 stops rotating. At this point, the torsion spring on the outside of the support shaft drives the arc-shaped flap 18 to rotate and reset, thus using the arc-shaped flap 18 to clean the filter cartridge 11. 1. The filter holes on the outside are sealed to prevent external gas from entering between the filter cylinder 11 and the washing tank 31 when the crystal is filtered by the filtration mechanism 4. At the same time, the liquid washed inside the washing tank 31 is discharged through the drain valve. Then the drain valve is closed and the vacuum pump 45 is used to evacuate the air inside the filtration box 44, which makes the inside of the filtration box 44 a low-pressure area. At this time, the filtration valve 42 is opened to allow the filtration guide tube 43 to draw air into the filtration tube 41. At this time, the adsorption cover of the filtration tube 41 is inserted into the washing tank 31 and evacuated directly below the filter cloth 14 to evacuate the air. Then the cleaning liquid on the crystal inside the filter cylinder 11 can be filtered dry. After the crystals inside the filter cylinder 11 are dried, the washing tub 31 is rotated by the rotating part of the flipping motor 32 with the connection position between it and the fixed frame 33 as the center, and then the washed and dried crystals are poured out from the top of the filter cylinder 11.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A crystal washing and filtration device for the production of aminosulfonic acid, comprising a washing mechanism (3), a suction filtration mechanism (4) on one side of the washing mechanism (3), and a driving mechanism (2) on the top of the washing mechanism (3), characterized in that: It also includes a filter mechanism (1), which is located at the center of the washing mechanism (3); The filtration mechanism (1) includes a filter cylinder (11), an annular plate (12) is fixed at the top of the filter cylinder (11), and multiple circumferentially distributed push blocks (13) are fixed at the top of the annular plate (12). A filter cloth (14) is fixed at the lower end of the filter cylinder (11), and a lifting shaft (15) is fixed at the center of the filter cloth (14). One end of the lifting shaft (15) extending out of the filter cylinder (11) is rotatably connected to the bottom of the lifting seat (16). Lifting arms (17) are fixed on both the front and rear sides of the lifting seat (16). A support frame (5) is provided on the lower side of the lifting seat (16). Two guide columns are fixed at the top of the support frame (5). Multiple circumferentially distributed arc-shaped flaps (18) are provided on the outer side of the filter cylinder (11). Filter holes are opened on the outer side of the filter cylinder (11) at the position of the arc-shaped flaps (18).

2. The crystal washing and filtration device for aminosulfonic acid production according to claim 1, characterized in that: The lifting seat (16) has two guide holes, and the two guide columns of the support frame (5) are slidably connected in the two guide holes of the lifting seat (16).

3. The crystal washing and filtration device for aminosulfonic acid production according to claim 1, characterized in that: Each of the lifting arms (17) has a wheel fixed at one end away from the lifting seat (16), and the wheel presses against the top of the annular plate (12).

4. The crystal washing and filtration device for aminosulfonic acid production according to claim 1, characterized in that: The washing mechanism (3) includes a fixed frame (33), a washing tub (31) is rotatably connected to the middle position of the fixed frame (33), a flipping motor (32) for driving the washing tub (31) to flip is fixedly installed on the front side of the fixed frame (33), an inlet valve (6) is fixedly installed on the upper side of the washing tub (31), and a drain valve is fixedly installed at the bottom of the washing tub (31).

5. The crystal washing and filtration device for aminosulfonic acid production according to claim 4, characterized in that: A rubber sealing ring is provided between the top of the annular plate (12) and the fixed frame (33). Both ends of the support frame (5) are fixed to the top of the fixed frame (33). The support frame (5) is located between two guide columns and has a through hole for the lifting shaft (15) to pass through.

6. The crystal washing and filtration device for aminosulfonic acid production according to claim 4, characterized in that: The filtration mechanism (4) includes a filtration box (44), a vacuum pump (45) is fixed on one side of the filtration box (44), a filtration conduit (43) is fixed on the other side of the filtration box (44), a filtration valve (42) is fixed at the other end of the filtration conduit (43), a filtration tube (41) is fixed on the other side of the filtration valve (42), and an adsorption cover is fixed at one end of the filtration tube (41) that extends into the washing tub (31), and the adsorption cover is located below the filter cloth (14).

7. The crystal washing and filtration device for aminosulfonic acid production according to claim 1, characterized in that: The filter cylinder (11) is fixed with a support shaft at the position of the arc-shaped flap (18) on the outside. One end of the arc-shaped flap (18) is sleeved on the outside of the support shaft. A torsion spring is provided between the support shaft and the arc-shaped flap (18). The upper and lower ends of the torsion spring are fixedly connected to the support shaft and the arc-shaped flap (18) respectively. The arc-shaped flap (18) away from the support shaft is a wedge-shaped end.

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