Difenthiuron crystal collection optimization device

Abstract

The utility model discloses a diafenthiuron crystal collection optimization device, which relates to the technical field of chemical engineering and process, and comprises a crystallization cylinder, a sedimentation cylinder is arranged on the crystallization cylinder, a guide cylinder is arranged in the crystallization cylinder, an exhaust pipe is connected to the crystallization cylinder, a heating component is connected to the sedimentation cylinder, and a stirring component is mounted on the crystallization cylinder; the lower end of the settling cylinder is connected with a discharging pipe, the discharging pipe is connected with a connecting pipe through a connecting assembly, the discharging pipe and the connecting pipe are provided with a first control valve and a second control valve respectively, the other end of the connecting pipe is connected with a filtering box, the lower end of the filtering box is provided with a liquid discharging pipe, and the liquid discharging pipe is provided with a third control valve. A filtering mechanism is arranged in the filtering box, and a cleaning mechanism is mounted on the filtering box; in the crystal production process, the filtering mechanism can accurately intercept large-particle impurities and suspended matters in crystals, so that the purity of the crystals is preliminarily improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical engineering and process technology, specifically to an optimized device for collecting and absorbing butyl ether urea crystals. Background Technology

[0002] Diethyl urea is a highly effective herbicide, and its preparation process typically involves chemical reactions and crystallization steps. Controlling the crystal morphology, purity, and yield during crystallization is crucial. The crystallization of diethyl urea can be affected by various factors such as temperature, solvent, and stirring speed.

[0003] In related technologies, during the crystallization process, the crystal surface may physically adsorb some impurities, uncrystallized solutes, or solvent molecules from the mother liquor. If these impurities are not removed in time, they will affect the purity of the crystal and its subsequent use. Low crystal purity directly impacts product quality and performance, reducing its effectiveness. This not only increases production costs but may also reduce crystal yield. Therefore, those skilled in the art have provided a butyl ether urea crystallization collection optimization device to address the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide an optimized device for collecting butyl urea crystals, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An optimized device for collecting butyl ether urea crystals includes:

[0007] A crystallization cylinder, wherein a settling cylinder is provided on the crystallization cylinder, a guide cylinder is provided inside the crystallization cylinder, an exhaust pipe is connected to the crystallization cylinder, a heating component is connected to the settling cylinder, a feed pipe is provided on the crystallization cylinder, a first baffle is installed on the feed pipe, and a stirring component is installed on the crystallization cylinder;

[0008] The lower end of the settling cylinder is connected to a discharge pipe, which is connected to a connecting pipe via a connecting assembly. A first control valve and a second control valve are respectively installed on the discharge pipe and the connecting pipe. The other end of the connecting pipe is connected to a filter box. The lower end of the filter box is provided with a drain pipe, on which a third control valve is installed. The filter box is provided with a filtration mechanism and a cleaning mechanism.

[0009] Preferably, the heating assembly includes a first circulation pipe, a heater, and a second circulation pipe. The two ends of the first circulation pipe are connected to the heater and the upper end of the settling cylinder, respectively, and the two ends of the second circulation pipe are connected to the lower end of the settling cylinder and the heater, respectively.

[0010] Preferably, the stirring assembly includes a servo motor, a rotating rod, and a stirring blade. The rotating rod is rotatably connected to the crystallization cylinder. The servo motor is fixedly mounted on the crystallization cylinder, and the output end of the servo motor is connected to the extension end of the rotating rod that passes through the crystallization cylinder. The stirring blade is fixedly connected to the rotating rod.

[0011] Preferably, the connecting assembly includes a fixing ring, a sealing ring, a first connecting plate, and a second connecting plate. The first connecting plate and the second connecting plate are respectively connected to one end of the discharge pipe and the connecting pipe. The fixing ring has a connecting groove, and the second connecting plate is engaged in the connecting groove. The fixing ring is threadedly connected to the first connecting plate, and the sealing ring is connected between the first connecting plate and the second connecting plate.

[0012] Preferably, the filtration mechanism includes a mounting frame, a filter screen, a return spring, and a mounting plate. The mounting plate is fixedly installed inside the filter box. The two ends of the return spring are respectively connected to the mounting frame and the mounting plate. The filter screen is fixedly installed to the mounting frame by mounting bolts.

[0013] Preferably, the filtration mechanism further includes a drive motor, a rotating rod, and two cams. The two cams are fixedly connected to both ends of the rotating rod. The drive motor is mounted on the filter box, and the output end of the drive motor is connected to the extension end of the rotating rod that passes through the filter box.

[0014] Preferably, the filter box has an inspection port, and an inspection door is installed at the inspection port by fixing bolts.

[0015] Preferably, the cleaning mechanism includes a water tank, a water pump, a suction pipe, a drain pipe, and a nozzle. The water tank is fixedly installed on one side of the filter box, the water pump is fixedly installed on the water tank, the two ends of the suction pipe are respectively connected to the water pump and the water tank, the two ends of the drain pipe are respectively connected to the water pump and the filter box, the nozzle is connected to the extension end of the drain pipe that passes through the filter box, the water tank is provided with a water inlet pipe, and a second cover is threaded onto the water inlet pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] In the crystal production process, this invention employs a filtration and cleaning mechanism to deeply purify the crystals, ensuring high-quality output and efficient collection. The filtration mechanism, based on the differences in particle size and physical properties between crystals and impurities, utilizes a high-precision filter medium to precisely intercept large particles and suspended matter in the crystals, initially improving their purity. Subsequently, the cleaning mechanism ensures thorough contact between the solvent and impurities on the crystal surface. Through chemical reactions such as dissolution and displacement, impurities are effectively removed from the crystal surface, reducing contamination of the crystals by impurities in the mother liquor and improving crystal quality and performance.

[0018] Through the above operations, the quality and performance of the crystals were comprehensively improved. High-purity crystals possess a more perfect crystal lattice structure and more stable physicochemical properties, which allows the crystals to be separated from the system more smoothly in the subsequent collection process, greatly improving collection efficiency and providing a solid guarantee for the large-scale production of high-quality crystals. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an optimized collection device for butyl ether urea crystals in an embodiment of this application;

[0020] Figure 2 This is a cross-sectional view of an optimized collection device for butyl ether urea crystals in an embodiment of this application.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0023] In the diagram: 1. Crystallization cylinder; 2. Settling cylinder; 3. Guide cylinder; 4. Exhaust pipe; 5. Feed pipe; 6. First baffle; 7. Discharge pipe; 8. Connecting pipe; 9. First control valve; 10. Second control valve; 11. Filter box; 12. Drain pipe; 13. Third control valve; 14. First circulation pipe; 15. Heater; 16. Second circulation pipe; 17. Servo motor; 18. Rotary rod; 19. Stirring blade; 20. Fixing ring; 21. Sealing ring; 22. First connecting plate; 23. Second connecting plate; 24. Connecting groove; 25. Mounting frame; 26. Filter screen; 27. Return spring; 28. Mounting plate; 29. ​​Mounting bolt; 30. Drive motor; 31. Rotating rod; 32. Cam; 33. Water tank; 34. Water pump; 35. Suction pipe; 36. Drain pipe; 37. Nozzle; 38. Inlet pipe; 39. Second cover; 40. Inspection port; 41. Fixing bolt; 42. Inspection door. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides a technical solution:

[0026] An optimized device for collecting butyl ether urea crystals includes:

[0027] The crystallization cylinder 1 is equipped with a settling cylinder 2 and a guide cylinder 3 inside the crystallization cylinder 1. An exhaust pipe 4 is connected to the crystallization cylinder 1, and a heating assembly is connected to the settling cylinder 2. The heating assembly includes a first circulation pipe 14, a heater 15, and a second circulation pipe 16. The two ends of the first circulation pipe 14 are respectively connected to the heater 15 and the upper end of the settling cylinder 2, and the two ends of the second circulation pipe 16 are respectively connected to the lower end of the settling cylinder 2 and the heater 15.

[0028] The crystallization cylinder 1 is provided with a feed pipe 5, and a first baffle 6 is installed on the feed pipe 5. The crystallization cylinder 1 is equipped with a stirring assembly, which includes a servo motor 17, a rotating rod 18 and a stirring blade 19. The rotating rod 18 is rotatably connected to the crystallization cylinder 1. The servo motor 17 is fixedly installed on the crystallization cylinder 1, and the output end of the servo motor 17 is connected to the extension end of the rotating rod 18 that passes through the crystallization cylinder 1. The stirring blade 19 is fixedly connected to the rotating rod 18.

[0029] Start the heater 15 and set the heating temperature through the control panel of the heater 15 according to the material characteristics and process requirements. During the preheating process, pay close attention to the operating status of the heater 15, check whether the heating indicator light is lit normally, observe the temperature display screen, and ensure that the temperature rises steadily without sudden increases or decreases. If the material needs to be premixed before entering the crystallizing cylinder 1 or needs to be stirred to promote heat transfer during the preheating process, turn on the servo motor 17. The servo motor 17 drives the stirring blade 19 to stir through the rotating rod 18.

[0030] When the heater 15 preheats to the set temperature, open the first cover 6 on the feed pipe 5. A small amount of material can be slowly poured into the feed pipe 5 to observe whether there is any blockage in the feed pipe 5. If the material can flow smoothly into the crystallizer 1, the feeding can continue. The material is continuously injected into the crystallizer 1 through the feed pipe 5 according to the predetermined feeding rate. During the feeding process, the liquid level change in the crystallizer 1 should be monitored at all times. This can be done by observing the liquid level mark on the crystallizer 1 or by installing a liquid level sensor for real-time monitoring to ensure that the liquid level is within a reasonable range.

[0031] After the material enters the crystallization cylinder 1, the temperature setting of the heater 15 is finely adjusted based on the real-time temperature feedback of the material, so that the temperature inside the crystallization cylinder 1 is always maintained within a suitable crystallization range. At the same time, the stirring assembly is continuously operated, and the rotation of the stirring blades 19 evenly distributes heat in the material, promotes thermal convection, accelerates the crystallization speed, and improves the uniformity of crystallization.

[0032] During the crystallization process, some gases are generated due to the physicochemical changes of the materials. These gases are discharged from the crystallization cylinder 1 through the exhaust pipe 4 to prevent the accumulation of gas from causing the pressure inside the crystallization cylinder 1 to rise and affect the crystallization effect.

[0033] The settling cylinder 2 plays a crucial role in the crystallization process. While the material is heated and stirred inside the crystallization cylinder 1, some uncrystallized impurities or denser particles will settle to the bottom of the settling cylinder 2 under gravity. Through the circulation system consisting of the first circulation pipe 14 and the second circulation pipe 16, the material at the bottom of the settling cylinder 2 is continuously extracted and sent back to the heater 15 for reheating and circulation, further improving the crystallization purity and reducing the impurity content.

[0034] The lower end of the settling cylinder 2 is connected to a discharge pipe 7. The discharge pipe 7 is connected to a connecting pipe 8 through a connecting assembly. A first control valve 9 and a second control valve 10 are respectively installed on the discharge pipe 7 and the connecting pipe 8. The connecting assembly includes a fixing ring 20, a sealing ring 21, a first connecting plate 22 and a second connecting plate 23. The first connecting plate 22 and the second connecting plate 23 are respectively connected to one end of the discharge pipe 7 and the connecting pipe 8. A connecting groove 24 is opened on the fixing ring 20. The second connecting plate 23 is engaged in the connecting groove 24. The fixing ring 20 is threadedly connected to the first connecting plate 22. The sealing ring 21 is connected between the first connecting plate 22 and the second connecting plate 23.

[0035] When connecting the connecting pipe 8 and the discharge pipe 7, the sealing ring 21 is in contact between the first connecting plate 22 and the second connecting plate 23. Try rotating the fixing ring 20. The second connecting plate 23 is engaged in the connecting groove 24. The fixing ring 20 is threadedly connected to the first connecting plate 22, which can connect and fix the connecting pipe 8 and the discharge pipe 7. When the connecting pipe 8 and the discharge pipe 7 are separated, the first control valve 9 and the second control valve 10 can be closed.

[0036] The other end of the connecting pipe 8 is connected to the filter box 11. The lower end of the filter box 11 is provided with a drain pipe 12. A third control valve 13 is installed on the drain pipe 12. The filter box 11 is provided with a filter mechanism, which includes a mounting frame 25, a filter screen 26, a return spring 27 and a mounting plate 28. The mounting plate 28 is fixedly installed in the filter box 11. The two ends of the return spring 27 are respectively connected to the mounting frame 25 and the mounting plate 28. The filter screen 26 is fixedly installed to the mounting frame 25 by mounting bolts 29. The filter mechanism also includes a drive motor 30, a rotating rod 31 and two cams 32. The two cams 32 are fixedly connected to the two ends of the rotating rod 31. The drive motor 30 is installed on the filter box 11, and the output end of the drive motor 30 is connected to the extension end of the rotating rod 31 that passes through the filter box 11.

[0037] During crystal filtration, the first control valve 9 and the second control valve 10 are opened, and the material enters the filter box 11 through the discharge pipe 7 and the connecting pipe 8. The filter screen 26 can accurately intercept large particles and suspended matter in the crystals by using a high-precision filter medium based on the differences in particle size and physical properties between the crystals and impurities, thus initially improving the purity of the crystals. During filtration, the drive motor 30 drives the two cams 32 to rotate through the rotating rod 31. When the protruding part of the cam 32 contacts the mounting frame 25, it can drive the mounting frame 25 to move upward. When the protruding part of the cam 32 moves away from the mounting frame 25, the return spring 27 releases its elastic potential energy, driving the mounting frame 25 to move downward, thereby driving the filter screen 26 to move up and down, improving the screening effect. After screening is completed, the third control valve 13 is opened, and the washing solvent can be discharged through the drain pipe 12.

[0038] Furthermore, the filter box 11 is provided with an inspection port 40, and an inspection door 42 is installed at the inspection port 40 by fixing bolts 41. When disassembling the filter screen 26, the fixing bolts 41 are removed to remove the inspection door 42, and then the mounting bolts 29 are removed to separate the filter screen 26 from the mounting frame 25.

[0039] A cleaning mechanism is installed on the filter box 11. The cleaning mechanism includes a water tank 33, a water pump 34, a suction pipe 35, a drain pipe 36, and a nozzle 37. The water tank 33 is fixedly installed on one side of the filter box 11, and the water pump 34 is fixedly installed on the water tank 33. The two ends of the suction pipe 35 are connected to the water pump 34 and the water tank 33, respectively. The two ends of the drain pipe 36 are connected to the water pump 34 and the filter box 11, respectively. The nozzle 37 is connected to the extension end of the drain pipe 36 that passes through the filter box 11. The water tank 33 is provided with a water inlet pipe 38. A second cover 39 is threadedly connected to the water inlet pipe 38. When the washing solvent is added to the water tank 33, the second cover 39 is opened, and the washing solvent is added to the water tank 33 through the water inlet pipe 38.

[0040] During cleaning, the water pump 34 delivers the washing solvent to the nozzle 37 through the suction pipe 35 and the drain pipe 36. The nozzle 37 can spray the washing solvent onto the crystal to clean it, allowing the solvent to fully contact the impurities on the crystal surface. Through chemical reactions such as dissolution and displacement, the impurities are effectively removed from the crystal surface, reducing the contamination of the crystal by impurities in the mother liquor and improving the quality and performance of the crystal.

[0041] Through the above operations, the quality and performance of the crystals were comprehensively improved. High-purity crystals possess a more perfect crystal lattice structure and more stable physicochemical properties, which allows the crystals to be separated from the system more smoothly in the subsequent collection process, greatly improving collection efficiency and providing a solid guarantee for the large-scale production of high-quality crystals.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for optimizing the collection of a buthionine crystallization, characterized in that, Include: Crystallization cylinder (1), the settling cylinder (2) is equipped on the crystallization cylinder (1), the flow guide cylinder (3) is equipped in the crystallization cylinder (1), the exhaust pipe (4) is connected on the crystallization cylinder (1), the heating assembly is connected on the settling cylinder (2), the feed pipe (5) is equipped on the crystallization cylinder (1), the first cover (6) is installed on the feed pipe (5), the stirring assembly is installed on the crystallization cylinder (1); The discharge pipe (7) is connected at the lower end of the settling cylinder (2), the connecting pipe (8) is connected through the connecting assembly, the first control valve (9) and the second control valve (10) are installed on the discharge pipe (7) and the connecting pipe (8) respectively, the other end of the connecting pipe (8) is connected with the filter box (11), the drain pipe (12) is arranged at the lower end of the filter box (11), the third control valve (13) is installed on the drain pipe (12), the filter mechanism is arranged in the filter box (11), and the cleaning mechanism is installed on the filter box (11).

2. A butachlor crystallization collection optimization device according to claim 1, characterized by: The heating assembly includes first circulating pipe (14), heater (15) and second circulating pipe (16), the first circulating pipe (14) is connected with the heater (15) and the upper end of the settling cylinder (2) respectively, and the second circulating pipe (16) is connected with the lower end of the settling cylinder (2) and the heater (15) respectively.

3. A butachlor crystallization collection optimization device according to claim 1, characterized by: The stirring assembly includes servo motor (17), rotating rod (18) and stirring blade (19), the rotating rod (18) is rotatably connected with the crystallization cylinder (1), the servo motor (17) is fixedly installed on the crystallization cylinder (1), and the output end of the servo motor (17) is connected with the extension end of the rotating rod (18) penetrating through the crystallization cylinder (1), and the stirring blade (19) is fixedly connected on the rotating rod (18).

4. The butachlor crystallization collection optimization apparatus of claim 1, wherein: The connecting assembly includes fixed ring (20), sealing ring (21), first connecting disc (22) and second connecting disc (23), the first connecting disc (22) and the second connecting disc (23) are connected with one end of the discharge pipe (7) and the connecting pipe (8) respectively, the connecting groove (24) is formed in the fixed ring (20), the second connecting disc (23) is clamped in the connecting groove (24), the fixed ring (20) is screwed with the first connecting disc (22), and the sealing ring (21) is connected between the first connecting disc (22) and the second connecting disc (23).

5. The butachlor crystallization collection optimization apparatus of claim 1, wherein: The filter mechanism includes mounting frame (25), filter screen (26), reset spring (27) and mounting plate (28), the mounting plate (28) is fixedly installed in the filter box (11), the reset spring (27) is connected with the mounting frame (25) and the mounting plate (28) respectively, and the filter screen (26) is fixedly installed with the mounting frame (25) through the mounting bolt (29).

6. A butachlor crystallization collection optimization apparatus according to claim 5, characterized by: The filtering mechanism further comprises a driving motor (30), a rotating rod (31) and two cams (32), the two cams (32) are fixedly connected at two ends of the rotating rod (31), the driving motor (30) is installed on the filtering box (11), and an extension end of the driving motor (30) output is connected with the rotating rod (31) penetrating through the filtering box (11).

7. A butachlor crystallization collection optimization device according to claim 6, characterized by: An inspection hole (40) is formed on the filtering box (11), and an inspection door (42) is installed on the inspection hole (40) through a fixing bolt (41).

8. The butachlor crystallization collection optimization apparatus of claim 1, wherein: The cleaning mechanism comprises a water tank (33), a water pump (34), a water suction pipe (35), a water discharge pipe (36) and a spray head (37), the water tank (33) is fixedly installed on one side of the filtering box (11), the water pump (34) is fixedly installed on the water tank (33), two ends of the water suction pipe (35) are connected with the water pump (34) and the water tank (33) respectively, two ends of the water discharge pipe (36) are connected with the water pump (34) and the filtering box (11) respectively, the spray head (37) is connected with an extension end of the water discharge pipe (36) penetrating through the filtering box (11), and the water tank (33) is provided with a water inlet pipe (38), and a second cover (39) is threadedly connected on the water inlet pipe (38).

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