Aryl pyrazole nitrile continuous crystallization device

Abstract

The invention belongs to the technical field of crystallization devices, and particularly relates to an aryl pyrazole nitrile continuous crystallization device which comprises a crystallizer shell, the front side wall of the crystallizer shell is fixedly connected with a controller, the outer wall of the crystallizer shell is fixedly connected with a plurality of supporting frames, and the side wall of the crystallizer shell is fixedly communicated with a feeding pipe. When the aryl pyrazoles nitrile is crystallized by using the crystallization device, the seed crystal can be automatically put into the mother liquor when the degree of supersaturation of the mother liquor reaches a metastable area and is about to enter an unstable area, and enough solute in the mother liquor can be separated out on the surface of the seed crystal and cannot spontaneously nucleate too much, so that the crystallization quality is ensured, and the production efficiency is improved. And after the seed crystal is put into the crystallization device, the seed crystal can be uniformly distributed in the mother liquor, so that the aryl pyrazoles nitrile solute in the mother liquor can be in full contact with the seed crystal and is crystallized on the surface of the seed crystal, the utilization rate of the solute is improved, and the crystallization speed is accelerated.

Description

Technical Field

[0001] The present invention belongs to the technical field of crystallization devices, and particularly relates to a continuous crystallization device for arylpyrazole nitrile. Background Art

[0002] Crystallization is a common and basic chemical process, and the production results of many chemical products are ultimately embodied in the form of crystal particles. The generation method of crystals varies according to the physical properties of different products. For example, a continuous freezing crystallization device proposed in Patent Publication No. CN118787979A.

[0003] During the production process of arylpyrazole nitrile, a crystallization device is required for crystallization. And in order to promote the nucleation of arylpyrazole nitrile, during the operation of the crystallization device, seed crystals also need to be put into the device to improve the crystallization efficiency. During the process of putting in the seed crystals, there are problems such as putting them in too early, resulting in difficult start of the crystallization process or poor crystallization effect, and putting them in too late, which will compete with the spontaneously formed crystal nuclei for growth, leading to uneven crystal particle size distribution and deterioration of product quality. At the same time, putting the seed crystals from above the mother liquor will cause the seed crystals to concentrate on the surface of the mother liquor and be difficult to disperse evenly throughout the mother liquor. This will result in only the surface area of the mother liquor having seed crystals as the crystallization nuclei, while the lower part and other areas lack seed crystals, making the crystallization mainly occur on the surface, with uneven crystal growth, and the finally produced crystal particle size difference being significant. This not only reduces the product quality but also brings many operation problems to subsequent processes such as filtration and drying, increasing production costs and energy consumption.

[0004] Therefore, a continuous crystallization device for arylpyrazole nitrile is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a continuous crystallization device for arylpyrazole nitrile in view of the above problems.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: A continuous crystallization device for arylpyrazole nitrile, including a crystallizer housing, a controller is fixedly connected to the front side wall of the crystallizer housing, a plurality of support frames are fixedly connected to the outer wall of the crystallizer housing, a feed pipe is fixedly communicated with the side wall of the crystallizer housing, a discharge pipe is fixedly communicated with the lower side wall of the crystallizer housing, a discharge valve is arranged in the discharge pipe, and further includes: A cooling jacket is fixedly sleeved on the outer wall of the crystallizer housing. A spiral plate is fixedly connected to the inner wall of the cooling jacket, and the cooling jacket is divided into spiral water channels by the spiral plate. A water inlet pipe is fixedly communicated with the right side wall of the cooling jacket, and a water outlet pipe is fixedly communicated with the left side wall of the cooling jacket. A stirring assembly is arranged on the upper side wall of the crystallizer housing for stirring the mother liquor in the crystallizer housing. A feeding component, which is arranged on the upper side wall of the crystallizer shell and is used for uniformly feeding crystal seeds; A dredging component, which is arranged at the lower end of the stirring component and is used for dredging the discharge pipe.

[0007] Preferably, the stirring component includes a stirring pipe rotatably connected to the upper side wall of the crystallizer shell. Both the upper and lower ends of the stirring pipe are of open structures. The upper side wall of the crystallizer shell is connected with a stirring motor through a support seat. The output end of the stirring motor is connected with a rotating rod through a detection component. The right end of the rotating rod is in transmission connection with the stirring pipe through a bevel gear transmission component. A plurality of horizontal pipes are fixedly communicated with the rod wall of the stirring pipe inside the crystallizer shell. One end of the horizontal pipes on the same side away from the stirring pipe is fixedly connected to the same stirring plate.

[0008] Preferably, the detection component includes a detection cylinder fixedly connected to the output end of the stirring motor. Both the left and right ends of the detection cylinder are of closed structures. The left inner wall of the detection cylinder is rotatably connected with the rotating rod. Two connecting plates are fixedly connected to the rod wall of the rotating rod. Two fixing plates are fixedly connected to the inner wall of the detection cylinder. The opposite side walls of the connecting plate and the fixing plate are fixedly connected to the same arc-shaped elastic rod. One end of the connecting plate away from the rotating rod is fixedly connected with a conductive block. A conductive plate is embedded in the inner wall of the detection cylinder. The conductive block is electrically connected to an external power supply, and the conductive plate is electrically connected to a controller.

[0009] Preferably, an air pump is fixedly connected to the upper side wall of the crystallizer shell. The air outlet end of the air pump is fixedly communicated with an air delivery pipe. The air delivery pipe is of an inverted L-shaped structure. The lower end of the air delivery pipe is rotatably connected with the upper port of the stirring pipe through a sealing bearing. A plurality of exhaust pipes are fixedly communicated with the pipe wall of the horizontal pipe. A pressure valve is arranged in the exhaust pipe. The upper side wall of the crystallizer shell is fixedly communicated with a pneumatic pipe.

[0010] Preferably, the feeding component includes a support cover fixedly connected to the upper side wall of the crystallizer shell. The upper end of the pneumatic pipe passes through the support cover. The air inlet end of the air pump passes through the support cover. The upper side wall of the support cover is connected with a storage cylinder through a bracket. The lower side wall of the storage cylinder is fixedly communicated with a feeding pipe. The lower end of the feeding pipe passes through the support cover and is fixedly communicated with a cylinder. A driving motor is fixedly connected to the left side wall of the cylinder. The output end of the driving motor passes through the cylinder and is connected with a circular plate. A plurality of material storage grooves are formed in the side wall of the circular plate. The lower side wall of the storage cylinder is fixedly communicated with a vertical pipe. The lower end of the vertical pipe is communicated with the air delivery pipe.

[0011] Preferably, the dredging component includes a support plate fixedly connected to the inner wall of the stirring tube. An air inlet pipe is fixedly communicated with the upper side wall of the support plate. A first control valve is arranged in the air inlet pipe. The lower end of the air inlet pipe extends out of the support plate and is fixedly communicated with a telescopic pipe. The lower end of the telescopic pipe is fixedly connected with a cleaning cone head. The same spring is fixedly connected between the cleaning cone head and the support plate. A flow meter is arranged in the discharge pipe, and the flow meter is electrically connected to the controller.

[0012] Preferably, two guide pins are fixedly connected to the lower side wall of the support plate. Two guide grooves matching the guide pins are formed in the upper side wall of the cleaning cone head.

[0013] Preferably, an air release pipe is fixedly communicated with the pipe wall of the air inlet pipe. A second control valve is arranged in the air release pipe. The end of the air release pipe far away from the air inlet pipe extends out of the stirring tube.

[0014] Compared with the existing technology, the advantages of an arylpyrazole nitrile continuous crystallization device are as follows: Through the arranged detection component, when using the crystallization device to crystallize arylpyrazole nitrile, crystal seeds can be automatically put into the mother liquor when the supersaturation of the mother liquor reaches the metastable zone and is about to enter the unstable zone. There are enough solutes in the mother liquor to precipitate on the surface of the crystal seeds, but not so many spontaneous nucleations, thus ensuring the crystallization quality.

[0015] Through the arranged stirring component and feeding component, after the crystal seeds are put into the crystallization device, the crystal seeds can be evenly distributed in the mother liquor, enabling the arylpyrazole nitrile solute in the mother liquor to fully contact the crystal seeds and crystallize on their surfaces, improving the utilization rate of the solute, accelerating the crystallization speed, thus improving the efficiency of the entire crystallization process, shortening the crystallization time, and the crystal growth is uniform, the particle size distribution is uniform, and the various physical and chemical properties of the product are more consistent and the quality is more stable, which is beneficial to subsequent processing and application.

[0016] Through the arranged dredging component, after the discharge pipe of the crystallization device is blocked, the blocked discharge pipe can be automatically dredged, thus ensuring the working efficiency of the crystallization device, and moreover, manual dredging is not required, reducing the workload of the operator.

[0017] Through the arranged air pump, air supply pipe, exhaust pipe, and pressure valve, while using the stirring component to stir the mother liquor inside the crystallization device, uniform small bubbles can be conveyed into the mother liquor, which not only improves the stirring effect of the mother liquor, but also accelerates the diffusion speed of the solute to the surface of the crystal seeds, improving the overall crystallization rate, and the bubbles can also prevent crystal agglomeration, keeping the crystals in a better dispersed state, which helps to obtain crystal products with uniform particle size distribution and higher purity. Description of the Drawings

[0018] Figure 1It is a schematic structural diagram of a continuous crystallization device for arylpyrazole nitrile provided by the present invention; Figure 2 It is a schematic internal structure diagram of the crystallizer housing in a continuous crystallization device for arylpyrazole nitrile provided by the present invention; Figure 3 It is a schematic diagram of the positional relationship between the cylinder and the circular plate in a continuous crystallization device for arylpyrazole nitrile provided by the present invention; Figure 4 It is a schematic structural diagram of a detection component in a continuous crystallization device for arylpyrazole nitrile provided by the present invention; Figure 5 It is a schematic surface structure diagram of the horizontal pipe in a continuous crystallization device for arylpyrazole nitrile provided by the present invention; Figure 6 It is a schematic structural diagram of a dredging component in a continuous crystallization device for arylpyrazole nitrile provided by the present invention.

[0019] In the figure: 1. Crystallizer housing; 2. Controller; 3. Support frame; 4. Feed pipe; 5. Discharge pipe; 6. Discharge valve; 7. Cooling jacket; 8. Spiral plate; 9. Water inlet pipe; 10. Water outlet pipe; 11. Stirring component; 111. Stirring pipe; 112. Stirring motor; 12. Rotating rod; 13. Horizontal pipe; 14. Stirring plate; 15. Detection component; 151. Detection cylinder; 152. Connection plate; 16. Fixed plate; 17. Arc-shaped elastic rod; 18. Conductive block; 19. Conductive plate; 20. Air pump; 21. Air supply pipe; 22. Exhaust pipe; 23. Pressure valve; 24. Air pressure pipe; 25. Feeding component; 251. Support cover; 252. Storage cylinder; 26. Feeding pipe; 27. Cylinder; 28. Driving motor; 29. Circular plate; 30. Storage tank; 31. Vertical pipe; 32. Dredging component; 321. Support plate; 322. Air inlet pipe; 33. First control valve; 34. Telescopic pipe; 35. Cleaning cone head; 36. Flowmeter; 37. Guide pin; 38. Air discharge pipe; 39. Second control valve. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] As Figures 1-6 shown, a continuous crystallization device for arylpyrazole nitrile includes a crystallizer housing 1. A controller 2 is fixedly connected to the front side wall of the crystallizer housing 1. A plurality of support frames 3 are fixedly connected to the outer wall of the crystallizer housing 1. A feed pipe 4 is fixedly communicated with the side wall of the crystallizer housing 1. A discharge pipe 5 is fixedly communicated with the lower side wall of the crystallizer housing 1. A discharge valve 6 is arranged in the discharge pipe 5. It further includes: The cooling jacket 7 is fixedly sleeved on the outer wall of the crystallizer shell 1. The inner wall of the cooling jacket 7 is fixedly connected with a spiral plate 8. The spiral plate 8 divides the interior of the cooling jacket 7 into spiral water channels. The right side wall of the cooling jacket 7 is fixedly communicated with a water inlet pipe 9, and the left side wall of the cooling jacket 7 is fixedly communicated with a water outlet pipe 10; The stirring assembly 11 is arranged on the upper side wall of the crystallizer shell 1 and is used for stirring the mother liquor in the crystallizer shell 1. The stirring assembly 11 includes a stirring pipe 111 rotatably connected to the upper side wall of the crystallizer shell 1. Both the upper and lower ends of the stirring pipe 111 are of an open structure. The upper side wall of the crystallizer shell 1 is connected with a stirring motor 112 through a support seat. The output end of the stirring motor 112 is connected with a rotating rod 12 through a detection assembly 15. The right end of the rotating rod 12 is drivingly connected with the stirring pipe 111 through a bevel gear transmission assembly. A plurality of transverse pipes 13 are fixedly communicated with the rod wall of the stirring pipe 111 inside the crystallizer shell 1. One end of the transverse pipes 13 on the same side away from the stirring pipe 111 is fixedly connected with the same stirring plate 14, which can stir the mother liquor; The feeding assembly 25 is arranged on the upper side wall of the crystallizer shell 1 and is used for uniformly feeding crystal seeds. The feeding assembly 25 includes a support cover 251 fixedly connected to the upper side wall of the crystallizer shell 1. The upper end of the air pressure pipe 24 passes through the support cover 251, and the air inlet end of the air pump 20 passes through the support cover 251. The upper side wall of the support cover 251 is connected with a storage cylinder 252 through a bracket. The lower side wall of the storage cylinder 252 is fixedly communicated with a feeding pipe 26. The lower end of the feeding pipe 26 passes through the support cover 251 and is fixedly communicated with a cylinder 27. The left side wall of the cylinder 27 is fixedly connected with a driving motor 28. The output end of the driving motor 28 passes through the cylinder 27 and is connected with a circular plate 29. A plurality of storage grooves 30 are formed in the side wall of the circular plate 29. The lower side wall of the storage cylinder 252 is fixedly communicated with a vertical pipe 31. The lower end of the vertical pipe 31 is communicated with the air supply pipe 21, which can automatically feed an appropriate amount of crystal seeds into the mother liquor; The dredging assembly 32 is arranged at the lower end of the stirring assembly 11 and is used for dredging the discharge pipe 5. The dredging assembly 32 includes a support plate 321 fixedly connected to the inner wall of the stirring pipe 111. The upper side wall of the support plate 321 is fixedly communicated with an air inlet pipe 322. A first control valve 33 is arranged in the air inlet pipe 322. The lower end of the air inlet pipe 322 extends out of the support plate 321 and is fixedly communicated with a telescopic pipe 34. An air discharge pipe 38 is fixedly communicated with the pipe wall of the air inlet pipe 322. A second control valve 39 is arranged in the air discharge pipe 38. One end of the air discharge pipe 38 away from the air inlet pipe 322 extends out of the stirring pipe 111, which can discharge the gas in the telescopic pipe 34. The lower end of the telescopic pipe 34 is fixedly connected with a cleaning cone head 35. A spring is fixedly connected between the cleaning cone head 35 and the support plate 321. A flow meter 36 is arranged in the discharge pipe 5. The flow meter 36 is electrically connected with the controller 2. After the discharge pipe 5 of the crystallization device is blocked, the blocked discharge pipe 5 can be automatically dredged.

[0022] The detection component 15 includes a detection cylinder 151 fixedly connected to the output end of the stirring motor 112. Both the left and right ends of the detection cylinder 151 are closed structures. The left inner wall of the detection cylinder 151 is rotatably connected to the rotating rod 12. Two connecting plates 152 are fixedly connected to the rod wall of the rotating rod 12. Two fixing plates 16 are fixedly connected to the inner wall of the detection cylinder 151. The same arc-shaped elastic rod 17 is fixedly connected to the side walls of the opposite sides of the connecting plate 152 and the fixing plate 16. One end of the connecting plate 152 far from the rotating rod 12 is fixedly connected with a conductive block 18. A conductive plate 19 is embedded in the inner wall of the detection cylinder 151. The conductive block 18 is electrically connected to an external power source, and the conductive plate 19 is electrically connected to the controller 2, which can detect the supersaturation of the mother liquor.

[0023] An air pump 20 is fixedly connected to the upper side wall of the crystallizer shell 1. The air outlet end of the air pump 20 is fixedly communicated with an air delivery pipe 21. The air delivery pipe 21 is of an inverted L-shaped structure. The lower end of the air delivery pipe 21 and the upper port of the stirring pipe 111 are rotatably connected through a sealing bearing. A plurality of exhaust pipes 22 are fixedly communicated with the pipe wall of the horizontal pipe 13. A pressure valve 23 is arranged in the exhaust pipe 22. An air pressure pipe 24 is fixedly communicated with the upper side wall of the crystallizer shell 1, which can convey uniform small bubbles into the mother liquor.

[0024] Two guide pins 37 are fixedly connected to the lower side wall of the support plate 321. Two guide grooves matching the guide pins 37 are formed on the upper side wall of the cleaning cone head 35, which improves the stability of the up and down movement of the cleaning cone head 35.

[0025] The operating principle of the present invention is described as follows: The mother liquor is conveyed into the crystallizer shell 1 through the feed pipe 4. Then, the operator sends an electrical signal to the controller 2 through an external remote control device. After receiving the electrical signal, the controller 2 will control the external pump mechanism to work, use the external pump mechanism to convey the refrigerant into the water inlet pipe 9, and convey it into the cooling jacket 7 through the water inlet pipe 9. The refrigerant will flow in the cooling jacket 7 through the spiral plate 8 and be discharged from the cooling jacket 7 through the water outlet pipe 10, so as to cool the mother liquor inside the crystallizer shell 1; Meanwhile, the controller 2 also controls the operation of the stirring motor 112. The stirring motor 112 controls the rotation of the rotating rod 12 through the detection component 15. The rotating rod 12 controls the rotation of the stirring tube 111 through the bevel gear transmission component. The stirring tube 111 drives the horizontal tube 13 and the stirring plate 14 to rotate together, and uses the horizontal tube 13 and the stirring tube 111 to stir the mother liquor. While controlling the operation of the stirring motor 112, the controller 2 also controls the operation of the air pump 20. The air pump 20 transports the externally filtered gas to the air supply pipe 21 and then to the stirring tube 111 through the air supply pipe 21. Since the horizontal tube 13 is connected to the stirring tube 111, the gas will also be transported to the exhaust pipe 22 through the horizontal tube 13. When the internal air pressure of the exhaust pipe 22, the horizontal tube 13, and the stirring tube 111 exceeds the threshold of the pressure valve 23, the gas will be transported into the mother liquor through the exhaust pipe 22, so that bubbles can be transported into the mother liquor, thereby accelerating the stirring of the mother liquor. The exhausted gas will be discharged from the crystallizer housing 1 through the air pressure pipe 24, and there is no need to increase the rotation speed of the stirring tube 111 and the stirring plate 14, thus avoiding the problem that the too-fast stirring speed of the stirring plate 14 will affect the subsequent crystal growth and cause the mother liquor in the crystallizer to flow too violently, making the heat transfer process complex and unstable, resulting in too low local temperature of the mother liquor, causing the solute to crystallize rapidly locally while the crystallization process in other regions is inhibited, affecting the overall crystallization efficiency and product quality; During the crystallization process of the mother liquor, its viscosity will gradually increase. When the supersaturation of the mother liquor reaches the metastable zone and is about to enter the unstable zone, the viscosity of the mother liquor will reach the set threshold. During the stirring process, the stirring plate 14 will be subject to a large resistance, and the resistance will be transmitted to the rotating rod 12 through the horizontal tube 13, the stirring tube 111, and the bevel gear transmission component. The detection cylinder 151 will continuously rotate under the drive of the stirring motor 112. The detection cylinder 151 will drive the fixing plate 16 to rotate, and the fixing plate 16 will apply pressure to the connecting plate 152 by compressing the arc-shaped elastic rod 17. When the rotating rod 12 is subject to a large resistance due to the increased viscosity of the mother liquor, the fixing plate 16 needs to compress the arc-shaped elastic rod 17 by a large stroke to overcome the resistance. Therefore, the connecting plate 152 will drive the conductive block 18 to move relative to the detection cylinder 151. During the movement of the conductive block 18, it will contact the conductive plate 19. The conductive block 18 is electrically connected to the external power supply, and the conductive plate 19 is electrically connected to the controller 2. When the conductive block 18 contacts the conductive plate 19, an electrical signal will be sent to the controller 2. After receiving this electrical signal, the controller 2 will control the drive motor 28 to operate for a set time and transport a certain amount of crystal seeds into the crystallizer; The driving motor 28 drives the circular plate 29 to rotate. Under the action of gravity, part of the seeds placed in the storage cylinder 252 are stored in the storage tank 30. During the rotation of the circular plate 29, the seeds inside the storage tank 30 are driven to rotate to the lower part. Under the action of gravity, the seeds inside the storage tank 30 fall into the air supply pipe 21 through the vertical pipe 31. Referring to the above principle, the seeds are evenly discharged into the mother liquor through the exhaust pipe 22, enabling the arylpyrazole nitrile solute in the mother liquor to fully contact the seeds and crystallize on their surfaces, improving the utilization rate of the solute, accelerating the crystallization speed, thereby improving the efficiency of the entire crystallization process, shortening the crystallization time, and the crystal growth is uniform, the particle size distribution is uniform, and the various physical and chemical properties of the product are more consistent and the quality is more stable, which is beneficial to subsequent processing and application; When the crystallization device is working and the discharge pipe 5 is blocked, after the controller 2 detects this situation through the flowmeter 36, it will control the first control valve 33 to open (arylpyrazole nitrile will only be discharged after the seeds are put in, and it is possible to cause the blockage of the discharge pipe 5. At this time, the seed feeding work has been completed, and there will be no seeds in the stirring pipe 111). Referring to the above principle, the gas conveyed by the air pump 20 is conveyed into the telescopic pipe 34 through the air inlet pipe 322, increasing the air pressure inside the telescopic pipe 34. The lower end of the telescopic pipe 34 will expand, driving the cleaning cone head 35 to move downward against the elastic force of the spring and extend into the discharge pipe 5. And the cleaning cone head 35 rotates with the stirring pipe 111, so as to dredge the blocked materials inside the discharge pipe 5, ensuring the discharge speed of the crystallization device.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aryl pyrazole nitrile continuous crystallization device, comprising a crystallizer housing (1), a controller (2) is fixedly connected to the front side wall of the crystallizer housing (1), a plurality of support frames (3) are fixedly connected to the outer wall of the crystallizer housing (1), a feed pipe (4) is fixedly communicated with the side wall of the crystallizer housing (1), a discharge pipe (5) is fixedly communicated with the lower side wall of the crystallizer housing (1), a discharge valve (6) is arranged in the discharge pipe (5), and it is characterized in that, It also includes: A cooling jacket (7) fixedly sleeved on the outer wall of the crystallizer shell (1). A spiral plate (8) is fixedly connected to the inner wall of the cooling jacket (7). The cooling jacket (7) is divided into spiral water channels by the spiral plate (8). A water inlet pipe (9) is fixedly communicated with the right side wall of the cooling jacket (7), and a water outlet pipe (10) is fixedly communicated with the left side wall of the cooling jacket (7). A stirring assembly (11) is arranged on the upper side wall of the crystallizer shell (1) for stirring the mother liquor in the crystallizer shell (1). A feeding assembly (25) is arranged on the upper side wall of the crystallizer shell (1) for uniformly feeding crystal seeds. A dredging assembly (32) is arranged at the lower end of the stirring assembly (11) for dredging the discharge pipe (5).

2. The continuous crystallization device for arylpyrazole nitrile according to claim 1, wherein, The stirring assembly (11) includes a stirring pipe (111) rotatably connected to the upper side wall of the crystallizer shell (1). Both the upper and lower ends of the stirring pipe (111) are of open structures. A stirring motor (112) is connected to the upper side wall of the crystallizer shell (1) through a support seat. The output end of the stirring motor (112) is connected to a rotating rod (12) through a detection assembly (15). The right end of the rotating rod (12) is in transmission connection with the stirring pipe (111) through a bevel gear transmission assembly. A plurality of transverse pipes (13) are fixedly communicated with the rod wall of the stirring pipe (111) inside the crystallizer shell (1). One end of the transverse pipes (13) on the same side away from the stirring pipe (111) is fixedly connected to the same stirring plate (14).

3. The continuous crystallization device for aryl pyrazole nitrile according to claim 2, characterized in that, The detection assembly (15) includes a detection cylinder (151) fixedly connected to the output end of the stirring motor (112). Both the left and right ends of the detection cylinder (151) are of closed structures. The left inner wall of the detection cylinder (151) is rotatably connected to the rotating rod (12). Two connecting plates (152) are fixedly connected to the rod wall of the rotating rod (12). Two fixing plates (16) are fixedly connected to the inner wall of the detection cylinder (151). The same arc-shaped elastic rod (17) is fixedly connected to the opposite side walls of the connecting plate (152) and the fixing plate (16). One end of one of the connecting plates (152) away from the rotating rod (12) is fixedly connected to a conductive block (18). A conductive plate (19) is embedded in the inner wall of the detection cylinder (151). The conductive block (18) is electrically connected to an external power source, and the conductive plate (19) is electrically connected to a controller (2).

4. The continuous crystallization device for arylpyrazole nitrile according to claim 3, wherein, An air pump (20) is fixedly connected to the upper side wall of the crystallizer shell (1). The air outlet end of the air pump (20) is fixedly communicated with an air delivery pipe (21). The air delivery pipe (21) is of an inverted L-shaped structure. The lower end of the air delivery pipe (21) is rotatably connected to the upper port of the stirring pipe (111) through a sealing bearing. A plurality of exhaust pipes (22) are fixedly communicated with the pipe wall of the transverse pipes (13). A pressure valve (23) is arranged in the exhaust pipes (22). An air pressure pipe (24) is fixedly communicated with the upper side wall of the crystallizer shell (1).

5. The continuous crystallization device for aryl pyrazole nitrile according to claim 4, characterized in that, The feeding component (25) includes a support cover (251) fixedly connected to the upper side wall of the crystallizer shell (1). The upper end of the air pressure pipe (24) passes through the support cover (251), and the intake end of the air pump (20) passes through the support cover (251). A storage cylinder (252) is connected to the upper side wall of the support cover (251) through a bracket. The lower side wall of the storage cylinder (252) is fixedly communicated with a feeding pipe (26). The lower end of the feeding pipe (26) passes through the support cover (251) and is fixedly communicated with a cylinder (27). A driving motor (28) is fixedly connected to the left side wall of the cylinder (27). The output end of the driving motor (28) passes through the cylinder (27) and is connected with a circular plate (29). A plurality of material storage grooves (30) are formed in the side wall of the circular plate (29). A vertical pipe (31) is fixedly communicated with the lower side wall of the storage cylinder (252). The lower end of the vertical pipe (31) is communicated with the air supply pipe (21).

6. The continuous crystallization device for arylpyrazole nitrile according to claim 1, wherein, The dredging component (32) includes a support plate (321) fixedly connected to the inner wall of the stirring pipe (111). An air inlet pipe (322) is fixedly communicated with the upper side wall of the support plate (321). A first control valve (33) is arranged in the air inlet pipe (322). The lower end of the air inlet pipe (322) extends out of the support plate (321) and is fixedly communicated with a telescopic pipe (34). A cleaning cone head (35) is fixedly connected to the lower end of the telescopic pipe (34). A spring is fixedly connected between the cleaning cone head (35) and the support plate (321). A flow meter (36) is arranged in the discharge pipe (5). The flow meter (36) is electrically connected to the controller (2).

7. The continuous crystallization device for arylpyrazole nitrile according to claim 6, characterized in that, Two guide pins (37) are fixedly connected to the lower side wall of the support plate (321). Two guide grooves matching the guide pins (37) are formed in the upper side wall of the cleaning cone head (35).

8. The continuous crystallization device for arylpyrazole nitrile according to claim 6, characterized in that, An air discharge pipe (38) is fixedly communicated with the pipe wall of the air inlet pipe (322). A second control valve (39) is arranged in the air discharge pipe (38). The end of the air discharge pipe (38) far away from the air inlet pipe (322) extends out of the stirring pipe (111).

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