Synthesis device of heterocyclic compound

Abstract

Belonging to the technical field of chemical equipment, the invention discloses a heterocyclic compound synthesis device, which belongs to the technical field of chemical equipment, and comprises a reaction cylinder, a guide hopper fixed at the middle position in the reaction cylinder, a stirring shaft rotatably mounted at the inner top of the reaction cylinder, a stirring motor mounted at the top of the stirring shaft, and a lifting assembly arranged at the top of the reaction cylinder and used for controlling the stirring shaft to slide up and down. A stirring part is arranged on the outer side of the stirring shaft in the reaction cylinder. The drying oven is arranged at the top of the reaction cylinder, a catalyst can be stored and activated before being added, the catalytic activity in the using process is improved, in addition, when the catalyst in the drying oven is discharged, a partition plate on a stirring shaft is used in a matched mode, and the using effect is improved. The catalyst can be discharged only when the material leakage hole in the partition plate is aligned with the discharge hole in the bottom of the drying oven, so that the device can perform intermittent discharging, side reactions are effectively reduced, and meanwhile, the selectivity and the yield of target products are improved.

Description

Technical Field

[0001] The invention relates to a synthesis device, in particular to a synthesis device for heterocyclic compounds, belonging to the technical field of chemical equipment. Background Art

[0002] In the prior art, for example, the invention with application number 202020003435.2 discloses a synthesis reaction device for nitrogen-containing heterocyclic compounds. In order to solve the problem that the solid raw materials cannot be evenly mixed in the process of preparing heterocyclic compounds, resulting in a low synthesis rate, thereby affecting the production efficiency of nitrogen-containing heterocyclic compounds; and the solid raw materials cannot fully react with each other, thereby reducing the yield of nitrogen-containing heterocyclic compounds, the second motor and the spindle-shaped drum are used together to facilitate the pre-mixing of the solid raw materials. The use of the rotating blades arranged in the spindle-shaped drum can remix the solid raw materials, so that the solid raw materials in the spindle-shaped drum are mixed more evenly, thereby improving the mixing efficiency between the solid raw materials. It also improves the reaction rate and yield of the subsequent preparation of nitrogen-containing heterocyclic compounds. The use of the first motor and the stirring blade can remix the solid raw materials. At the same time, the use of the rotating nozzle can make the alkaline liquid evenly sprinkled on the surface of the solid raw materials in the reactor body, and the alkaline liquid and the solid raw materials are evenly mixed by the stirring of the stirring blade, thereby improving the rate and yield of heterocyclic compound preparation.

[0003] Similar to the above application, there are still some shortcomings:

[0004] In the process of mixing and preparing raw materials, catalysts need to be added to increase the reaction rate. However, the current device lacks an addition component during use and can only add the raw materials once. For some complex reactions or reactions that are sensitive to catalyst concentration, the one-time addition method will lead to an increase in initial side reactions, and the inconvenience in reaction control can easily lead to the risk of catalyst deactivation. At the same time, activation treatment cannot be performed during addition, which affects the catalytic activity of the catalyst. In addition, after the catalysis is completed, the catalyst cannot be recycled, which is inconvenient to use.

[0005] Therefore, a synthesis device of heterocyclic compounds is designed to optimize the above problems. Summary of the invention

[0006] The main purpose of the present invention is to provide a synthesis device for heterocyclic compounds. By arranging an oven at the top of a reaction tube, the catalyst can be stored and activated before being added, thereby improving the catalytic activity during use. In addition, when discharging the catalyst inside the oven, it is used in conjunction with the partition on the stirring shaft. The catalyst can be discharged only when the leakage hole on the partition is aligned with the discharge port at the bottom of the oven, so that the device can be intermittently discharged, effectively reducing the occurrence of side reactions, while improving the selectivity and yield of the target product. By arranging a support plate at the bottom of the reaction tube, and rotatably installing a turntable on the top of the support plate, the catalyst is filtered and stored by using a storage tank on the top of the turntable, and the catalyst is discharged by stirring. The rectangular plug rod at the bottom of the mixing shaft is inserted into the rectangular socket to provide a power source for the rotation of the turntable, so that when the compound is discharged, the liquid is separated by high-speed centrifugation, and then the catalyst is stored in the oven by a circulation mechanism composed of a guide tube, a conveying tube, a conveying motor, and a spiral conveying rod, so as to complete the automatic circulation of the catalyst, thereby improving the functionality of the device and making it more practical. By installing a U-shaped rod and a cross bar on the stirring shaft, the solution can be rotated and stirred. In addition, a spiral blade is installed on the stirring shaft and used in conjunction with the sleeve on the blocking plate. During the mixing and stirring process, the catalyst deposited at the bottom of the solution can be transported upward to improve the contact effect with the solution, thereby increasing the reaction rate.

[0007] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0008] A synthesis device for heterocyclic compounds comprises a reaction tube, a feed hopper is fixed at the middle position inside the reaction tube, a stirring shaft is rotatably installed at the inner top of the reaction tube, a stirring motor is installed at the top of the stirring shaft, a lifting assembly for controlling the stirring shaft to slide up and down is provided at the top of the reaction tube, a stirring portion is provided on the outer side of the stirring shaft located inside the reaction tube, a blocking plate for blocking the bottom of the feed hopper is rotatably installed at the bottom end of the stirring shaft, an oven is installed at one side of the top of the reaction tube, a partition plate that fits the inner top of the reaction tube is fixed on the stirring shaft, a material leakage hole that matches the oven discharge port is opened on the partition plate, a separation mechanism for filtering catalysts is provided at the inner bottom of the reaction tube, and a circulation mechanism for transporting catalysts to the oven is provided below the separation mechanism.

[0009] Preferably: the lifting assembly comprises a lifting cylinder and a mounting plate, the lifting cylinder is mounted on the top of the reaction tube, the output end of the lifting cylinder is mounted with a mounting plate, and the stirring motor is mounted on the top of the mounting plate.

[0010] Preferably, the stirring part includes a through pipe, spiral blades, a U-shaped rod, and a cross bar. The through pipe is fixedly installed on the top of the plug plate, and there is a gap between the bottom end of the through pipe and the top of the plug plate. The bottom end of the stirring shaft is located inside the through pipe and is provided with spiral blades. A U-shaped rod is fixed on the stirring shaft. The through pipe is located inside the U-shaped rod, and cross bars are evenly fixed on both sides of the U-shaped rod.

[0011] Preferably, the separation mechanism includes a support plate, a turntable, a material storage groove, a first leakage hole, an annular screen, a second leakage hole, and a blocking mechanism. The support plate is horizontally fixed at the inner bottom of the reaction cylinder. A turntable is rotatably installed at the middle position of the top of the support plate. Material storage grooves are evenly formed along the circumference on the top of the turntable. First leakage holes communicating with the inside of the material storage grooves are formed on the outside of the turntable. An annular screen is fixed inside the reaction cylinder and below the material guiding hopper. The bottom of the annular screen is in contact with the side of the turntable. Second leakage holes are evenly formed along the circumference on the outside of the top of the support plate, and the second leakage holes are located in the gap between the outside of the turntable and the inner wall of the reaction cylinder. A blocking mechanism for controlling the discharge of the catalyst inside the material storage groove is provided on the support plate.

[0012] Preferably, the bottom end of the stirring shaft penetrates through the plug plate and is rotatably connected to the plug plate. A rectangular insertion rod is fixed at the bottom end of the stirring shaft. A rectangular insertion hole matching the rectangular insertion rod is formed at the middle position of the top of the turntable.

[0013] Preferably, a groove matching the plug plate is formed on the outside of the top of the rectangular insertion hole, and the depth of the groove is the same as the thickness of the rectangular insertion hole.

[0014] Preferably, the blocking mechanism includes a cross-shaped installation groove, a material discharge port, a blocking block, and a pulling mechanism. The cross-shaped installation groove is formed on the top of the support plate. Material discharge ports matching the material storage grooves are formed at the ends of the cross-shaped installation groove. Blocking blocks for blocking the material storage grooves and the material discharge ports are slidably arranged at the ends of the cross-shaped installation groove. A pulling mechanism for controlling the sliding of the blocking blocks is arranged at the middle position inside the cross-shaped installation groove.

[0015] Preferably, the pulling mechanism includes a rotary motor, a mounting plate, and connecting rods. The rotary motor is installed at the middle position of the bottom end of the support plate, and the output end of the rotary motor extends into the cross-shaped installation groove. A mounting plate is installed at the output end of the rotary motor. Connecting rods are evenly rotatably installed on the outside of the top of the mounting plate. The ends of the connecting rods away from the mounting plate are respectively hinged to the blocking blocks.

[0016] Preferably, the circulation mechanism includes a guiding pipe, a conveying pipe, a conveying motor, and a spiral conveyor rod. The guiding pipe is inclined and arranged at the bottom of the material discharge port. The conveying pipe is vertically installed on the outside of the reaction cylinder. The bottom end of the guiding pipe communicates with the inner bottom of the conveying pipe. The top end of the conveying pipe communicates with the oven. A conveying motor is installed at the top of the guiding pipe. A spiral conveyor rod is installed at the output end of the conveying motor, and the two ends of the spiral conveyor rod are respectively rotatably connected to the upper and lower ends of the conveying pipe.

[0017] Preferably: the bottom end of the reaction cylinder is evenly provided with supporting feet, and the bottom of the outer side of the reaction cylinder is provided with a discharge valve.

[0018] The beneficial effects of the present invention are:

[0019] The invention provides a heterocyclic compound synthesis device, which can store the catalyst and perform activation treatment before adding it by arranging an oven on the top of the reaction tube, thereby improving the catalytic activity during use. In addition, when discharging the catalyst inside the oven, it is used in conjunction with the partition on the stirring shaft. The catalyst can be discharged only when the leakage hole on the partition is aligned with the discharge port at the bottom of the oven, so that the device can perform intermittent discharging, effectively reducing the occurrence of side reactions, and at the same time improving the selectivity and yield of the target product.

[0020] A support plate is provided at the bottom of the reaction cylinder, and a turntable is rotatably installed on the top of the support plate. The catalyst is filtered and stored by using the storage tank on the top of the turntable, and a rectangular plug rod at the bottom of the stirring shaft is inserted into the inside of the rectangular plug hole to provide a power source for the rotation of the turntable, so that when the compound is discharged, liquid separation is performed by high-speed centrifugation, and then the catalyst is stored in the oven by using a circulation mechanism composed of a guide pipe, a conveying pipe, a conveying motor, and a spiral conveying rod, so as to complete the automatic circulation of the catalyst, thereby improving the functionality of the device and making it more practical.

[0021] By installing a U-shaped rod and a cross bar on the stirring shaft, the solution can be rotated and stirred. In addition, a spiral blade is installed on the stirring shaft and used in conjunction with the sleeve on the blocking plate. During the mixing and stirring process, the catalyst deposited at the bottom of the solution can be transported upward to improve the contact effect with the solution, thereby increasing the reaction rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front cross-sectional view of a preferred embodiment of a synthesis device for heterocyclic compounds of the present invention;

[0023] Figure 2 It is a partial structural diagram of the catalyst separation state at the top of the cylinder of a preferred embodiment of a synthesis device for heterocyclic compounds of the present invention;

[0024] Figure 3 A diagram showing the structure of a partition in a preferred embodiment of a synthesis device for heterocyclic compounds of the present invention;

[0025] Figure 4 A cross-sectional view of a support plate of a preferred embodiment of a synthesis device for heterocyclic compounds of the present invention;

[0026] Figure 5 A top view of a support plate of a preferred embodiment of a synthesis device for heterocyclic compounds of the present invention;

[0027] Figure 6 In a preferred embodiment of the synthesis apparatus for a heterocyclic compound of the present invention Figure 1 Enlarged view of location A

[0028] Figure 7 Structural diagram of the middle position inside the reaction cylinder in a preferred embodiment of the synthesis apparatus for a heterocyclic compound of the present invention

[0029] Figure 8 In a preferred embodiment of the synthesis apparatus for a heterocyclic compound of the present invention Figure 1 Enlarged view of location B

[0030] Fig. 9 Front view of a preferred embodiment of the synthesis apparatus for a heterocyclic compound of the present invention

[0031] In the figure: 1, reaction cylinder; 2, material guiding hopper; 3, plugging plate; 4, stirring shaft; 5, stirring motor; 6, lifting cylinder; 7, mounting plate; 8, oven; 9, partition plate; 10, leakage hole; 11, through pipe; 12, spiral blade; 13, U-shaped rod; 14, cross bar; 15, supporting plate; 16, turntable; 17, storage tank; 18, first leakage hole; 19, annular sieve; 20, second leakage hole; 21, plugging mechanism; 22, guiding pipe; 23, conveying pipe; 24, conveying motor; 25, spiral conveying rod; 26, rectangular insertion rod; 27, rectangular insertion hole; 28, cross-shaped mounting groove; 29, blanking port; 30, rotating motor; 31, mounting disc; 32, blocking block; 33, connecting rod Detailed implementation manners

[0032] To make the technical solutions of the present invention clearer and more definite for those skilled in the art, the present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings. However, the implementation manners of the present invention are not limited thereto

[0033] As Figure 1-Figure 9 shown, this embodiment provides a synthesis apparatus for a heterocyclic compound, including a reaction cylinder 1. A material guiding hopper 2 is fixed at the middle position inside the reaction cylinder 1. A stirring shaft 4 is rotatably installed at the inner top of the reaction cylinder 1. A stirring motor 5 is installed at the top of the stirring shaft 4. A lifting assembly for controlling the up and down sliding of the stirring shaft 4 is provided at the top of the reaction cylinder 1. A stirring part is provided on the outer side of the stirring shaft 4 inside the reaction cylinder 1. A plugging plate 3 for plugging the bottom of the material guiding hopper 2 is rotatably installed at the bottom end of the stirring shaft 4. An oven 8 is installed on one side of the top of the reaction cylinder 1. A partition plate 9 that fits with the inner top of the reaction cylinder 1 is fixed on the stirring shaft 4. A leakage hole 10 that cooperates with the discharge port of the oven 8 is opened on the partition plate 9. A separation mechanism for filtering the catalyst is provided at the inner bottom of the reaction cylinder 1, and a circulation mechanism for conveying the catalyst to the inside of the oven 8 is provided below the separation mechanism

[0034] Overall working principle: Before synthesizing nitrogen-containing heterocyclic compounds, place the metal catalyst inside the oven 8, heat it at a certain temperature for a period of time to activate the metal catalyst. During the synthesis process, first inject the raw materials into the reaction cylinder 1, and start the stirring motor 5 to drive the stirring shaft 4 to rotate to mix the raw materials. In addition, during the mixing of the raw materials, open the discharge port at the bottom of the oven 8. During the stirring process, the stirring shaft 4 will drive the partition plate 9 to rotate. Therefore, only when the leakage hole 10 is aligned with the discharge port, the catalyst will fall from the leakage hole 10, and the catalyst is added intermittently. After the feeding is completed, the stirring part controls the flow of the catalyst and the raw materials to ensure the stable synthesis of the stable compound. After the compound is synthesized, use the lifting assembly to control the downward movement of the stirring shaft 4, separate the blocking plate 3 from the bottom end of the material guiding hopper 2, and the compound and the catalyst are filtered and separated by the separation mechanism. Then the catalyst is collected and transported to the inside of the oven 8 through the circulation mechanism for secondary recycling.

[0035] In this embodiment, the lifting assembly includes a lifting cylinder 6 and a mounting plate 7. The lifting cylinder 6 is installed on the top of the reaction cylinder 1, and the output end of the lifting cylinder 6 is equipped with a mounting plate 7. The stirring motor 5 is installed on the top of the mounting plate 7.

[0036] Local working principle: During the process of controlling the lifting of the stirring shaft 4, start the lifting cylinder 6 to control the lifting of the mounting plate 7, thereby driving the stirring motor 5 and the stirring shaft 4 to move up and down.

[0037] In this embodiment, the stirring part includes a through pipe 11, a spiral blade 12, a U-shaped rod 13 and a cross bar 14. The through pipe 11 is fixedly installed on the top of the blocking plate 3, and there is a gap between the bottom end of the through pipe 11 and the top of the blocking plate 3. The bottom end of the stirring shaft 4 is located inside the through pipe 11 and is provided with a spiral blade 12. A U-shaped rod 13 is fixed on the stirring shaft 4. The through pipe 11 is located inside the U-shaped rod 13, and cross bars 14 are evenly fixed on both sides of the U-shaped rod 13.

[0038] Local working principle: During the rotation of the stirring shaft 4, the solution is disturbed by the U-shaped rod 13 and the cross bar 14. At the same time, the spiral blade 12 will also rotate. Since the catalyst has a large density and sinks to the bottom of the solution, it is gathered on the blocking plate 3 through the guiding action of the material guiding hopper 2. Through the rotation of the spiral blade 12, the catalyst can be transported upward and continuously thrown from the top of the through pipe 11 to contact the solution evenly, improving the catalytic effect.

[0039] In this embodiment, the separation mechanism includes a support plate 15, a turntable 16, a material storage trough 17, a first leakage hole 18, an annular screen 19, a second leakage hole 20 and a blocking mechanism 21. The support plate 15 is horizontally fixed on the inner bottom of the reaction tube 1, and the turntable 16 is rotatably installed at the middle position of the top of the support plate 15. The top of the turntable 16 is evenly provided with material storage troughs 17 along the circumferential direction, and the outer side of the turntable 16 is provided with a first leakage hole 18 connected to the inside of the material storage trough 17. An annular screen 19 is fixed on the inner side of the reaction tube 1 and below the feed hopper 2. The bottom of the annular screen 19 is in contact with the side of the turntable 16. The outer side of the top of the support plate 15 is evenly provided with second leakage holes 20 along the circumferential direction, and the second leakage holes 20 are located in the gap between the outer side of the turntable 16 and the inner wall of the reaction tube 1. The support plate 15 is provided with a blocking mechanism 21 for controlling the discharge of the catalyst inside the material storage trough 17.

[0040] Local working principle: After the compound is generated, the plugging plate 3 is opened, and the compound liquid and the catalyst flow downward at the same time, and the compound liquid directly flows out through the annular screen 19 and the first leakage hole 18 on the side of the storage tank 17, and then falls into the bottom of the reaction tube 1 through the second leakage hole 20. Only the catalyst is intercepted inside the storage tank 17. Then, the rotation of the turntable 16 is controlled, and the compound liquid on the surface of the catalyst is thrown out by centrifugal separation to ensure the dryness of the catalyst surface. Then, the plugging mechanism 21 is opened to discharge the catalyst, and it is transported to the inside of the oven 8 by the circulation mechanism.

[0041] In this embodiment, the bottom end of the stirring shaft 4 passes through the blocking plate 3 and is rotatably connected to the blocking plate 3. A rectangular plug rod 26 is fixed to the bottom end of the stirring shaft 4, and a rectangular hole 27 that cooperates with the rectangular plug rod 26 is opened at the middle position of the top of the turntable 16.

[0042] Local working principle: When the blocking state of the bottom end of the feed hopper 2 is released, the stirring shaft 4 is controlled to drive the blocking plate 3 to move downward, and the rectangular plug rod 26 at the bottom end of the stirring shaft 4 will be inserted into the interior of the rectangular plug hole 27. By turning on the stirring motor 5 again to drive the stirring shaft 4 to rotate in the opposite direction, it can not only accelerate the downward discharge of the compound, but also drive the rotation of the turntable 16, which is more practical.

[0043] In this embodiment, a groove adapted to the blocking plate 3 is provided on the outer side of the top of the rectangular insertion hole 27 , and the depth of the groove is the same as the thickness of the rectangular insertion hole 27 .

[0044] Partial working principle: After the rectangular plug rod 26 is inserted into the rectangular plug hole 27, the blocking plate 3 is simultaneously inserted into the groove, and the distance between the bottom end of the hopper 2 and the turntable 16 is large to facilitate the rapid outflow of the compound.

[0045] In this embodiment, the blocking mechanism 21 includes a cross-shaped mounting groove 28, a feed opening 29, a blocking block 32 and a pulling mechanism. The cross-shaped mounting groove 28 is opened at the top of the support plate 15. The ends of the cross-shaped mounting groove 28 are both provided with feed openings 29 that cooperate with the material storage groove 17. The ends of the cross-shaped mounting groove 28 are both slidably provided with blocking blocks 32 for blocking the material storage groove 17 and the feed opening 29. A pulling mechanism for controlling the sliding of the blocking block 32 is provided at the middle position inside the cross-shaped mounting groove 28.

[0046] Partial working principle: When the catalyst inside the storage tank 17 is centrifugally dried, the block 32 will block the bottom end of the storage tank 17 and the discharge port 29 to prevent the compound from flowing out of the discharge port 29, thereby ensuring the effect of centrifugal drying. After centrifugal drying, the pulling mechanism is used to control the multiple groups of blockages 32 to slide toward each other, thereby releasing the blocking state of the storage tank 17, and the catalyst will be discharged downward through the discharge port 29.

[0047] In this embodiment, the pulling mechanism includes a rotating motor 30, a mounting plate 31 and a connecting rod 33. The rotating motor 30 is installed at the middle position of the bottom end of the support plate 15, and the output end of the rotating motor 30 extends to the inside of the cross-shaped mounting groove 28. The output end of the rotating motor 30 is installed with a mounting plate 31, and a connecting rod 33 is evenly rotated and installed on the outer side of the top of the mounting plate 31. The end of the connecting rod 33 away from the mounting plate 31 is hinged to the block 32.

[0048] Local working principle: when controlling the movement of the blocking block 32, the rotating motor 30 is started to control the rotation of the mounting disk 31. The rotation of the mounting disk 31 changes the position of the connecting rod 33. The connecting rod 33 tilts and moves, and pulls the blocking block 32, driving the blocking block 32 to move simultaneously.

[0049] In this embodiment, the circulation mechanism includes a guide tube 22, a conveying tube 23, a conveying motor 24 and a spiral conveying rod 25. The guide tube 22 is tilted at the bottom of the discharge port 29, and the conveying tube 23 is vertically installed on the outside of the reaction tube 1. The bottom end of the guide tube 22 is connected to the inner bottom of the conveying tube 23, and the top of the conveying tube 23 is connected to the oven 8. The conveying motor 24 is installed on the top of the guide tube 22, and the output end of the conveying motor 24 is installed with a spiral conveying rod 25, and the two ends of the spiral conveying rod 25 are rotatably connected to the upper and lower ends of the conveying tube 23 respectively.

[0050] Local working principle: the catalyst discharged from the discharge port 29 falls into the interior of the guide pipe 22, and then enters the bottom end of the conveying pipe 23 along the guide pipe 22, and the conveying motor 24 is started to drive the spiral conveying rod 25 to rotate, and the catalyst is transported to the top, and then enters the interior of the oven 8 for storage.

[0051] In this embodiment, the bottom end of the reaction tube 1 is evenly provided with supporting feet, and the bottom outside the reaction tube 1 is provided with a discharge valve.

[0052] Partial working principle: The use of the support feet ensures the stability of the reaction tube 1, and the discharge valve is opened to discharge the liquid compound during discharge.

[0053] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A synthesis device for heterocyclic compounds, comprising a reaction tube (1), characterized in that: A feed hopper (2) is fixed at a middle position inside the reaction cylinder (1), a stirring shaft (4) is rotatably mounted on the top of the reaction cylinder (1), a stirring motor (5) is mounted on the top of the stirring shaft (4), a lifting assembly for controlling the stirring shaft (4) to slide up and down is provided on the top of the reaction cylinder (1), a stirring portion is provided on the outside of the stirring shaft (4) located inside the reaction cylinder (1), a blocking plate (3) for blocking the bottom of the feed hopper (2) is rotatably mounted on the bottom of the stirring shaft (4), an oven (8) is mounted on one side of the top of the reaction cylinder (1), a partition (9) is fixed on the stirring shaft (4) and is in contact with the top of the reaction cylinder (1), a material leakage hole (10) is provided on the partition (9) and is matched with an outlet of the oven (8), a separation mechanism for filtering the catalyst is provided at the bottom of the reaction cylinder (1), and a circulation mechanism for transporting the catalyst to the inside of the oven (8) is provided below the separation mechanism.

2. A synthesis device for heterocyclic compounds according to claim 1, characterized in that: The lifting assembly comprises a lifting cylinder (6) and a mounting plate (7); the lifting cylinder (6) is mounted on the top of the reaction tube (1); the output end of the lifting cylinder (6) is mounted with the mounting plate (7); and the stirring motor (5) is mounted on the top of the mounting plate (7).

3. A synthesis device for heterocyclic compounds according to claim 1 or 2, characterized in that: The stirring portion comprises a through pipe (11), a spiral blade (12), a shaped rod (13) and a cross bar (14); the through pipe (11) is fixedly mounted on the top of the blocking plate (3), and a gap is left between the bottom end of the through pipe (11) and the top of the blocking plate (3); the spiral blade (12) is provided at the bottom end of the stirring shaft (4) and located inside the through pipe (11); the shaped rod (13) is fixed on the stirring shaft (4); the through pipe (11) is located inside the shaped rod (13), and the cross bars (14) are evenly fixed on both sides of the shaped rod (13).

4. A synthesis device for heterocyclic compounds according to claim 3, characterized in that: The separation mechanism comprises a support plate (15), a rotating disk (16), a material storage groove (17), a first leakage hole (18), an annular screen (19), a second leakage hole (20) and a blocking mechanism (21). The support plate (15) is horizontally fixed to the inner bottom of the reaction cylinder (1). A rotating disk (16) is rotatably mounted at the middle position of the top of the support plate (15). The top of the rotating disk (16) is evenly provided with material storage grooves (17) along the circumferential direction. The outer side of the rotating disk (16) is provided with a A first leakage hole (18) is provided, an annular screen (19) is fixed inside the reaction tube (1) and below the feed hopper (2), the bottom of the annular screen (19) is in contact with the side of the turntable (16), a second leakage hole (20) is uniformly provided on the outside of the top of the support plate (15) along the circumferential direction, and the second leakage hole (20) is located in the gap between the outside of the turntable (16) and the inner wall of the reaction tube (1), and a blocking mechanism (21) for controlling the discharge of the catalyst inside the storage tank (17) is provided on the support plate (15).

5. A synthesis device for heterocyclic compounds according to claim 4, characterized in that: The bottom end of the stirring shaft (4) passes through the blocking plate (3) and is rotatably connected to the blocking plate (3). A rectangular plug rod (26) is fixed to the bottom end of the stirring shaft (4). A rectangular plug hole (27) that cooperates with the rectangular plug rod (26) is provided at the middle position of the top of the rotating disk (16).

6. A synthesis device for heterocyclic compounds according to claim 5, characterized in that: A groove adapted to the blocking plate (3) is provided on the outer side of the top of the rectangular plug hole (27), and the depth of the groove is the same as the thickness of the rectangular plug hole (27).

7. A synthesis device for heterocyclic compounds according to claim 4, 5 or 6, characterized in that: The blocking mechanism (21) comprises a cross-shaped mounting groove (28), a material discharge port (29), a blocking block (32) and a pulling mechanism. The cross-shaped mounting groove (28) is provided at the top of the support plate (15). The ends of the cross-shaped mounting groove (28) are provided with material discharge ports (29) that match the material storage groove (17). The ends of the cross-shaped mounting groove (28) are provided with blocking blocks (32) that are slidably provided to block the material storage groove (17) and the material discharge port (29). A pulling mechanism that controls the sliding of the blocking block (32) is provided at a middle position inside the cross-shaped mounting groove (28).

8. A synthesis device for heterocyclic compounds according to claim 7, characterized in that: The pulling mechanism comprises a rotating motor (30), a mounting plate (31) and a connecting rod (33); the rotating motor (30) is mounted at a middle position of the bottom end of the support plate (15), and the output end of the rotating motor (30) extends to the inside of the cross-shaped mounting groove (28); the output end of the rotating motor (30) is mounted with the mounting plate (31); the connecting rod (33) is evenly rotatably mounted on the outer side of the top of the mounting plate (31); and one end of the connecting rod (33) away from the mounting plate (31) is hinged to a blocking block (32).

9. A synthesis device for heterocyclic compounds according to claim 8, characterized in that: The circulation mechanism comprises a guide tube (22), a conveying tube (23), a conveying motor (24) and a spiral conveying rod (25); the guide tube (22) is obliquely arranged at the bottom of a material discharge port (29); the conveying tube (23) is vertically installed on the outside of a reaction tube (1); the bottom end of the guide tube (22) is connected to the inner bottom of the conveying tube (23); the top end of the conveying tube (23) is connected to an oven (8); the top of the guide tube (22) is installed with a conveying motor (24); the output end of the conveying motor (24) is installed with a spiral conveying rod (25); and the two ends of the spiral conveying rod (25) are rotatably connected to the upper and lower ends of the conveying tube (23) respectively.

10. The synthesis device of a heterocyclic compound according to claim 1, characterized in that: The bottom end of the reaction cylinder (1) is evenly provided with supporting feet, and the bottom outside the reaction cylinder (1) is provided with a discharge valve.

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