Efficient reaction kettle for continuous synthesis of pyrrole nitrile

Abstract

The invention relates to the technical field of reaction kettles, in particular to an efficient reaction kettle for continuous synthesis of pyrrole nitrile, which comprises a kettle body, a plurality of feed pumps and a discharge pump are arranged on the kettle body, and two outlet pipes of the discharge pump are provided with first electromagnetic valves; a stirring unit and a floating plate are arranged in the kettle body, a material guide channel penetrating through the upper side and the lower side of the floating plate is arranged on the floating plate, and an opening and closing unit is arranged at the material guide channel; the storage barrels are sequentially arranged in the vertical direction, and partition plates are embedded in the storage barrels in a sliding mode in the axial direction of the storage barrels; the left end and the right end of the uppermost storage barrel are communicated with two outlet pipes of a discharging pump respectively, the same ends of every two adjacent storage barrels are communicated through a connecting pipe, a second electromagnetic valve is installed on the connecting pipe, the left end and the right end of the lowermost storage barrel are communicated with discharging pipes, and third electromagnetic valves are installed on the discharging pipes; and a plurality of electric heating rods are arranged on the kettle body and the storage barrel. The preparation method can improve the preparation efficiency of the pyrrole nitrile.

Description

Technical Field

[0001] This application relates to the technical field of reaction kettles, and particularly to an efficient reaction kettle for the continuous synthesis of pyrrole nitrile. Background Art

[0002] By introducing various functional groups, pyrrole nitrile can be synthesized into highly efficient and low-toxic insecticides with good insecticidal, acaricidal, and molluscicidal effects.

[0003] Currently, during the preparation of pyrrole nitrile, raw materials and ingredients need to be fed into the reaction kettle first, and then the raw materials and ingredients are stirred and mixed. After the raw materials and ingredients are mixed evenly, the mixture is left standing and heated for a specified period of time. After the heating is completed, the mixture is discharged from the reaction kettle.

[0004] The above-mentioned related technologies have the following defects: The feeding of raw materials and ingredients, the stirring and mixing of raw materials and ingredients, the standing and heating of the mixture, and the discharging of the mixture all take a long time, and each process needs to be carried out in sequence. Therefore, the preparation time of pyrrole nitrile is approximately equal to the sum of the times consumed by each process, resulting in low preparation efficiency of pyrrole nitrile. Therefore, improvement is needed. Summary of the Invention

[0005] In order to improve the preparation efficiency of pyrrole nitrile, this application provides an efficient reaction kettle for the continuous synthesis of pyrrole nitrile.

[0006] The efficient reaction kettle for the continuous synthesis of pyrrole nitrile provided by this application adopts the following technical solutions: The efficient reaction kettle for the continuous synthesis of pyrrole nitrile includes a kettle body. There are several feed pumps and one discharge pump on the kettle body. The outlet pipe of the feed pump is connected to the top of the kettle body, the inlet pipe of the discharge pump is connected to the bottom of the kettle body, and the outlet pipe of the discharge pump is divided into two and is equipped with a first solenoid valve;

[0007] A stirring unit and a floating plate are arranged in the kettle body. The floating plate is slidably embedded in the kettle body in the vertical direction. The stirring unit rotates through the floating plate. The floating plate can move up and down along the stirring unit, and a material guiding channel penetrating through the upper and lower sides of the floating plate is arranged on the floating plate, and an opening and closing unit is arranged at the material guiding channel;

[0008] It also includes several storage barrels arranged in sequence in the vertical direction. The storage barrels are horizontally arranged. A partition is slidably embedded in the storage barrel along its own axial direction. The partition can slide between the left and right ends of the storage barrel;

[0009] The left and right ends of the uppermost storage barrel are respectively connected to the two outlet pipes of the discharge pump. The same ends of every two adjacent storage barrels are connected through a connecting pipe. A second solenoid valve is installed on the connecting pipe. The left and right ends of the lowermost storage barrel are both connected to a discharge pipe, and a third solenoid valve is installed on the discharge pipe;

[0010] Several electric heating rods are arranged on both the kettle body and the storage barrel.

[0011] Optionally, the opening and closing unit includes a bracket arranged on the floating plate, a lifting rod is slidably penetrated on the bracket in the vertical direction, a sealing block for blocking the material guiding channel is arranged on the lifting rod, and the lifting rod is connected to the bracket through a first spring, and when the first spring is in a natural state, the sealing block will be inserted into the material guiding channel;

[0012] A first magnetic plate is provided at the bottom of the kettle body. When the floating plate drops to the lowest state, the first magnetic plate will adsorb and fix the lifting rod downward, and the lifting rod will drive the sealing block to drop and separate from the material guiding channel.

[0013] Optionally, a slot is provided on the side of the lifting rod, a clamp rod is slidably penetrated through the bracket in the horizontal direction, the clamp rod is connected to the bracket through a second spring, and when the second spring is in a natural state, the clamp rod will be clamped in the slot, and the sealing block will be located below the material guide channel;

[0014] A stopper and an annular groove are arranged on the inner side wall of the kettle body, and a magnetic ring is fixedly installed in the annular groove. When the floating plate rises and contacts the stopper, the magnetic ring will adsorb and fix the clamping rod, and the clamping rod will be separated from the clamping groove.

[0015] Optionally, the cross-sectional area of ​​the material guiding channel gradually increases from top to bottom, and a second magnetic plate for adsorbing and fixing the sealing block is installed on the groove wall of the material guiding channel.

[0016] Optionally, the stirring unit includes a motor arranged on the kettle body, the output shaft of the motor is coaxially arranged with the kettle body, and a rotating shaft is coaxially connected to the output shaft of the motor, an impeller located at the bottom wall of the kettle body is installed on the rotating shaft, and the rotating shaft is rotatably penetrated through a floating plate, and the impeller is located below the floating plate.

[0017] Optionally, it further includes a control unit, which includes a controller, a first contact sensor and a plurality of second contact sensors, wherein the first contact sensor, the second contact sensor, the motor, the feed pump, the discharge pump, the first solenoid valve, the second solenoid valve and the third solenoid valve are all coupled to the controller, the first contact sensor is installed on the stopper and is contacted by the floating plate when it rises, and the second contact sensor is installed on the inner end wall of the storage barrel and is contacted by the partition plate when it moves;

[0018] When the floating plate rises and contacts the first contact sensor, the first contact sensor will send a stirring signal to the controller, and the controller will start timing and control the motor to start and the feed pump to shut down;

[0019] When the controller counts up to the specified duration, the controller will control the feed pump and the discharge pump to start, the first solenoid valve corresponding to the second contact sensor resisted by the partition to start, the second solenoid valve located diagonally to the above-mentioned first solenoid valve to start, the remaining second solenoid valves adjacent to the upper second solenoid valve and located diagonally to the upper second solenoid valve to start, and the third solenoid valve located diagonally to the lowest opened second solenoid valve to start. The feed pump will feed raw materials and ingredients into the kettle body. The mixed materials in the kettle body will enter the uppermost storage bucket, the mixed materials in the storage bucket will enter the storage bucket below it, and the mixed materials in the lowermost storage bucket will be discharged through the discharge pipe.

[0020] When the partition moves and resists the second contact sensor, the second contact sensor will transmit a static signal to the controller, and the controller will control the discharge pump to close, the first solenoid valve to close, the second solenoid valve to close, and the third solenoid valve to close.

[0021] In summary, the present application includes the following beneficial technical effects:

[0022] 1. The mixed materials in the kettle body can flow into the uppermost storage bucket, the mixed materials in each storage bucket can flow into the storage bucket below it, and the mixed materials in the lowermost storage bucket can be directly discharged. Moreover, the mixed materials in the kettle body and the mixed materials in each storage bucket are not mixed with each other, enabling the feeding of raw materials and ingredients, the stirring and mixing of raw materials and ingredients, the static heating of the mixed materials, and the discharging of the mixed materials to be carried out simultaneously, greatly shortening the preparation time of pyrrole nitrile and thus improving the preparation efficiency of pyrrole nitrile.

[0023] 2. When the floating plate rises and resists the first contact sensor, the first contact sensor will transmit a stirring signal to the controller, and the controller will control the feed pump to close. Moreover, workers can control the flow rate of each feed pump through the controller, enabling the raw materials and ingredients to be fed in a specified ratio, realizing the automatic quantitative feeding of raw materials and ingredients.

[0024] 3. The controller will start counting up to the specified duration. After that, the feed pump will feed materials into the upper cavity of the kettle body. The mixed materials in the lower cavity of the kettle body will be discharged to the upper storage bucket through the discharge pump. The mixed materials in the upper storage bucket will be discharged to the lower storage bucket, and the mixed materials in the lower storage bucket will be discharged through the discharge pipe, realizing the automation of multiple processes such as feeding, material changing, and discharging, and thus further improving the preparation efficiency of pyrrole nitrile. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0026] Figure 2 is the overall sectional structural schematic diagram of the embodiment of the present application;

[0027] Figure 3 It is a schematic cross-sectional structure diagram of the kettle body in the embodiment of the present application;

[0028] Figure 4 It is a schematic structure diagram of the floating plate and the opening and closing unit in the embodiment of the present application;

[0029] Figure 5 It is a schematic cross-sectional structure diagram of the floating plate and the opening and closing unit in the embodiment of the present application;

[0030] Figure 6 It is a schematic structure diagram when the floating plate in the embodiment of the present application descends to the lowest state.

[0031] Reference numerals: 1. Kettle body; 11. Feed pump; 12. Discharge pump; 121. First solenoid valve; 13. Electric heating rod; 14. Protective shell; 15. Groove; 16. First magnetic plate; 17. Block; 18. Ring groove; 19. Magnetic ring; 2. Stirring unit; 21. Motor; 22. Rotating shaft; 23. Impeller; 3. Floating plate; 31. Installation groove; 32. Sealing bearing; 33. Material guiding channel; 34. Second magnetic plate; 4. Opening and closing unit; 41. Bracket; 42. Lifting rod; 421. Card slot; 43. Sealing block; 44. First spring; 45. Clamping rod; 46. Second spring; 5. Storage bucket; 51. Partition board; 52. Connecting pipe; 521. Second solenoid valve; 53. Discharge pipe; 531. Third solenoid valve; 6. Control unit; 61. Controller; 62. First contact sensor; 63. Second contact sensor. Detailed implementation manners

[0032] The following further elaborates on the present application in conjunction with the attached Figure 1-6 for a more detailed description of the present application.

[0033] The embodiment of the present application discloses a high-efficiency reactor for the continuous synthesis of pyrrole nitrile. As Figure 1 shown, the high-efficiency reactor for the continuous synthesis of pyrrole nitrile includes a vertically arranged kettle body 1. A plurality of feed pumps 11 are installed at the top of the kettle body 1, and the outlet pipe of the feed pump 11 communicates with the top of the kettle body 1; the number of feed pumps 11 is determined according to the total types of raw materials and ingredients, and each feed pump 11 only extracts one kind of raw material or ingredient to ensure the accurate proportioning of raw materials and ingredients; a discharge pump 12 is installed at the bottom of the kettle body 1, and the inlet pipe of the discharge pump 12 communicates with the bottom of the kettle body 1, so as to extract the mixed material in the kettle body 1; the outlet pipe of the discharge pump 12 is divided into two and is equipped with a first solenoid valve 121, so that the mixed material can be discharged through any one of the outlet pipes of the discharge pump 12.

[0034] As Figure 1 and Figure 2As shown in the figure, a stirring unit 2 is provided inside the kettle body 1. The stirring unit 2 includes a motor 21 installed at the top of the kettle body 1. The output shaft of the motor 21 is coaxially arranged with the kettle body 1, and a rotating shaft 22 is coaxially connected to the output shaft of the motor 21. The lower end of the rotating shaft 22 is provided with an impeller 23 located at the inner bottom wall of the kettle body 1. The motor 21 can drive the impeller 23 to rotate through the rotating shaft 22, so that the impeller 23 rotates to stir the raw materials and ingredients in the kettle body 1.

[0035] As Figure 3 and Figure 4 shown in the figure, a floating plate 3 is slidably embedded in the kettle body 1 in the vertical direction. The floating plate 3 is disc-shaped. An installation groove 31 is provided at the center of the floating plate 3. A sealed bearing 32 is fixedly embedded in the installation groove 31. The rotating shaft 22 rotates through the inner side of the sealed bearing 32. The sealed bearing 32 can move up and down on the rotating shaft 22, and the impeller 23 is always located below the floating plate 3, so that the stirring unit 2 will not affect the floating and sinking of the floating plate 3 in the kettle body 1.

[0036] A plurality of material guiding channels 33 penetrating through the upper and lower sides of the floating plate 3 are provided on the floating plate 3. An opening and closing unit 4 is provided at the material guiding channel 33. When the opening and closing unit 4 is closed, the floating plate 3 can divide the inner side of the kettle body 1 into upper and lower cavities. The upper cavity can be used for feeding raw materials and ingredients, and the lower cavity can be used for discharging the mixed material, so that the two processes of feeding and discharging can be carried out simultaneously, shortening the preparation time of pyrrole nitrile; by opening the opening and closing unit 4, the mixed material on the upper side of the floating plate 3 can flow through the material guiding channel 33 to the lower side of the floating plate 3, so that the mixed material can be discharged through the discharge pump 12 after being stirred and mixed evenly.

[0037] In this embodiment, the number of the material guiding channels 33 is four, so that the mixed material on the upper side of the floating plate 3 can flow to the lower side of the floating plate 3 as soon as possible.

[0038] As Figure 3 shown in the figure, a plurality of electric heating rods 13 are installed on the outer side wall of the kettle body 1. A protective shell 14 is covered outside the electric heating rods 13. The contact part of the electric heating rods 13 with the kettle body 1 is used to heat the mixed material in the kettle body 1, and the rest of the electric heating rods 13 will be wrapped by the protective shell 14 to avoid danger caused by accidental contact by workers.

[0039] As Figure 4 and Figure 5As shown, the opening and closing unit 4 includes a bracket 41 installed on the lower surface of the floating plate 3. A lifting rod 42 is slidably inserted through the bracket 41 in the vertical direction. The lifting rod 42 is vertically arranged, and a sealing block 43 is installed at the upper end of the lifting rod 42. The lifting rod 42 is connected to the bracket 41 through a first spring 44. One end of the first spring 44 is fixedly connected to the lifting rod 42, and the other end of the first spring 44 is fixedly connected to the bracket 41. When the first spring 44 is in the natural state, the sealing block 43 will be inserted into the material guiding channel 33. At this time, the material guiding channel 33 will be blocked, so that the floating plate 3 separates the upper and lower cavities in the kettle body 1.

[0040] The cross-sectional area of the material guiding channel 33 gradually increases from top to bottom. A second magnetic plate 34 is installed on the groove wall of the material guiding channel 33. The sealing block 43 is an iron block, and the second magnetic plate 34 can adsorb and fix the sealing block 43, so that the sealing block 43 stably blocks the material guiding channel 33 to prevent the upper and lower cavities in the kettle body 1 from communicating with each other.

[0041] As Figure 3 and Figure 6 shown, a plurality of grooves 15 are provided at the bottom of the kettle body 1. A first magnetic plate 16 is fixedly embedded in the grooves 15. The number of the first magnetic plates 16 corresponds to the number of the lifting rods 42 one by one, and the lifting rods 42 are iron rods. When the mixture in the lower cavity of the kettle body 1 is about to be completely discharged, the mixture in the upper cavity of the kettle body 1 will press down the floating plate 3 to the lowest state. At this time, the lifting rod 42 will move to the position of the first magnetic plate 16, and the first magnetic plate 16 will adsorb and fix the lifting rod 42 downward. The lifting rod 42 will drive the sealing block 43 to descend and separate from the second magnetic plate 34 and the material guiding channel 33, so that the mixture in the upper cavity of the kettle body 1 can flow through the material guiding channel 33 to the lower cavity of the kettle body 1, so as to facilitate the subsequent raw materials and ingredients to continue to be fed into the upper cavity of the kettle body 1.

[0042] It should be noted that Figure 6 This is only a schematic diagram of the positions of the floating plate 3 and the sealing block 43. During the actual use of the reaction kettle, workers can select a lifting rod 42 with an appropriate length according to needs, so as to change the distance between the floating plate 3 and the sealing block 43 in the lowest state, and adjust the speed of the mixture passing through the material guiding channel 33.

[0043] A clamping groove 421 is provided on the side of the lifting rod 42. A clamping rod 45 is slidably inserted through the support 41 horizontally. The clamping rod 45 is connected to the support 41 by a second spring 46. One end of the second spring 46 is fixedly connected to the clamping rod 45, and the other end of the second spring 46 is fixedly connected to the support 41. When the first magnetic plate 16 adsorbs and fixes the lifting rod 42 downward, the second spring 46 will return to its natural state, causing the clamping rod 45 to slide and be clamped in the clamping groove 421. At this time, the lifting rod 42 will be clamped and fixed, ensuring that the material guiding channel 33 can be continuously opened, and the mixture in the upper cavity of the kettle body 1 can continuously flow into the lower cavity of the kettle body 1.

[0044] After the lower cavity of the kettle body 1 is filled with the mixture, the mixture in the upper cavity of the kettle body 1 will decrease, the downward pressure on the floating plate 3 will decrease, and the upward buoyancy force on the floating plate 3 will increase, causing the floating plate 3 to gradually rise. The lifting rod 42 will rise and separate from the first magnetic plate 16. The clamping rod 45 will still be clamped in the clamping groove 421, keeping the material guiding channel 33 in an open state, thereby prompting the floating plate 3 to continuously rise in the kettle body 1.

[0045] As Figure 3 and Figure 5 shown, a stop block 17 is installed on the inner side wall of the kettle body 1, and an annular groove 18 is provided on the inner side wall of the kettle body 1. A magnetic ring 19 is fixedly installed in the annular groove 18. The clamping rod 45 is an iron rod. When the floating plate 3 rises and abuts against the stop block 17, the floating plate 3 has risen to the highest state. At this time, the clamping rod 45 will move to the inside of the magnetic ring 19, and the magnetic ring 19 will adsorb and fix the clamping rod 45, causing the clamping rod 45 to disengage from the clamping groove 421. At this time, the first spring 44 will return to its natural state, causing the sealing block 43 to re-seal the material guiding channel 33. At this time, all the mixture in the kettle body 1 is located below the floating plate 3, so that the stirring unit 2 can stir and mix this part of the mixture.

[0046] As Figure 1 and Figure 2 shown, several storage buckets 5 are arranged in sequence along the vertical direction below the kettle body 1. The storage buckets 5 are horizontally arranged. A partition plate 51 is slidably embedded in the storage bucket 5 along its own axis. The partition plate 51 has a certain thickness, so that the partition plate 51 can only slide and rotate around its own axis in the storage bucket 5. The partition plate 51 can divide the inside of the storage bucket 5 into two left and right cavities, and the partition plate 51 can slide between the left and right ends of the storage bucket 5, thereby changing the volumes of the two left and right cavities inside the storage bucket 5.

[0047] The left and right ends of the uppermost storage bucket 5 are respectively connected to the two outlet pipes of the discharge pump 12. The same ends of every two adjacent storage buckets 5 are connected through a connecting pipe 52. A second solenoid valve 521 is installed on the connecting pipe 52. The left and right ends of the lowermost storage bucket 5 are both connected to a discharge pipe 53. A third solenoid valve 531 is installed on the discharge pipe 53.

[0048] A number of electric heating rods 13 are installed on the outer side wall of the material storage tank. A protective shell 14 is covered outside the electric heating rods 13. The contact part of the electric heating rods 13 with the material storage tank 5 is used to heat the mixture in the material storage tank 5, and the rest of the electric heating rods 13 will be wrapped by the protective shell 14 to prevent workers from accidentally touching and causing danger.

[0049] By controlling the opening and closing of the first solenoid valve 121, the second solenoid valve 521 and the third solenoid valve 531, the mixture in the kettle body 1 can flow into the uppermost material storage tank 5. The mixture in each material storage tank 5 can flow into the material storage tank 5 below it. The mixture in the lowermost material storage tank 5 can be directly discharged, and the mixture in the kettle body 1 and the mixture in each material storage tank 5 are not mixed with each other, so that the feeding of raw materials and ingredients, the stirring and mixing of raw materials and ingredients, the static heating of the mixture, and the discharging of the mixture can be carried out simultaneously, greatly shortening the preparation time of pyrrole nitrile and thus improving the preparation efficiency of pyrrole nitrile.

[0050] It should be noted that the flow of the mixture in each material storage tank 5 will make the mixture not easy to deposit and make the mixture further mixed evenly.

[0051] Such as Figure 1 、 Figure 2 and Figure 5 shown, it further includes a control unit 6. The control unit 6 includes a controller 61, a first contact sensor 62 and a number of second contact sensors 63. The first contact sensor 62, the second contact sensor 63, the motor 21, the feed pump 11, the discharge pump 12, the first solenoid valve 121, the second solenoid valve 521 and the third solenoid valve 531 are all coupled to the controller 61. The first contact sensor 62 is installed on the stop block 17 and is used for the floating plate 3 to rise and touch, and the second contact sensor 63 is installed on the inner end wall of the material storage tank 5 and is used for the partition plate 51 to move and touch.

[0052] It should be noted that workers can control the flow rate of each feed pump 11 through the controller 61 so that the raw materials and ingredients are fed in a specified ratio.

[0053] The implementation principle of the high-efficiency reactor for continuous synthesis of pyrrole nitrile in the embodiment of the present application is as follows: during the preparation process of pyrrole nitrile, the floating plate 3 will be in the highest state and will contact the first contact sensor 62, the first contact sensor 62 will transmit a stirring signal to the controller 61, the controller 61 will start timing and control the motor 21 to start and the feed pump 11 to close, the lower cavity of the kettle body 1 and one of the cavities of each storage barrel 5 will be filled with mixed materials, the motor 21 will drive the impeller 23 to rotate and stir the mixed materials in the kettle body 1 through the rotating shaft 22, the electric heating rod 13 will heat the mixed materials in the kettle body 1 and the storage barrel 5, the feed pump 11, the discharge pump 12, the first solenoid valve 121, the second solenoid valve 521 and the third solenoid valve 531 are all in the closed state, the partitions 51 will be arranged in a serpentine shape, and the partitions 51 will contact the second contact sensor 63, and the second contact sensor 63 will transmit a delayed opening signal to the controller 61.

[0054] When the controller 61 starts timing to the specified time, it means that the mixture in the kettle body 1 has been stirred and the subsequent raw materials and ingredients can be stirred. At this time, the controller 61 will control the feed pump 11 and the discharge pump 12 to open, the first solenoid valve 121 corresponding to the second contact sensor 63 that is abutted by the partition 51 to open, the second solenoid valve 521 located at the diagonal of the above-mentioned first solenoid valve 121 to open, the remaining second solenoid valves 521 adjacent to the upper second solenoid valve 521 and located at the diagonal of the upper second solenoid valve 521 to open, and the third solenoid valve 531 located at the diagonal of the second solenoid valve 521 that is opened at the bottom to open.

[0055] Taking the attached figure as an example, the feed pump 11 will feed into the upper cavity of the kettle body 1, and the mixed material in the lower cavity of the kettle body 1 will be discharged into the left cavity of the upper storage barrel 5 through the discharge pump 12, and the mixed material in the left cavity of the upper storage barrel 5 will squeeze the upper partition 51, so that the mixed material in the right cavity of the upper storage barrel 5 is discharged into the right cavity of the lower storage barrel 5 through the right connecting pipe 52, and the mixed material in the right cavity of the lower storage barrel 5 will squeeze the lower partition 51, so that the mixed material in the left cavity of the lower storage barrel 5 is discharged through the left discharge pipe 53.

[0056] When the upper partition plate 51 touches the second contact sensor 63 on the right side of the upper storage bucket 5, the lower partition plate 51 will touch the second contact sensor 63 on the left side of the lower storage bucket 5. The floating plate 3 has dropped to the lowest state, and the second contact sensor 63 will send a static signal to the controller 61. The controller 61 will control the discharge pump 12 to close, the first solenoid valve 121 to close, the second solenoid valve 521 to close, and the third solenoid valve 531 to close, so that the mixture in the storage bucket 5 can be statically heated. At the same time, the lifting rod 42 will move to the first magnetic plate 16, and the first magnetic plate 16 will adsorb and fix the lifting rod 42 downward. The lifting rod 42 will drive the sealing block 43 to drop away from the second magnetic plate 34 and the material guiding channel 33, and the second spring 46 will return to its natural state, enabling the clamping rod 45 to slide and be clamped in the clamping groove 421. At this time, the lifting rod 42 will be clamped and fixed, ensuring that the material guiding channel 33 can be continuously opened, and the mixture in the upper cavity of the kettle body 1 can continuously flow into the lower cavity of the kettle body 1. Then the floating plate 3 will gradually rise, the lifting rod 42 will rise away from the first magnetic plate 16, and the clamping rod 45 will still be clamped in the clamping groove 421, keeping the material guiding channel 33 in an open state, thereby prompting the floating plate 3 to continuously rise in the kettle body 1 until the floating plate 3 rises and touches the stop block 17 and the first contact sensor 62. At this time, the floating plate 3 will be in the highest state, and the first contact sensor 62 will send a stirring signal to the controller 61, enabling the stirring unit 2 to continue stirring and mixing the mixture that has just been loaded.

[0057] In summary, the feeding of raw materials and ingredients, the stirring and mixing of raw materials and ingredients, the static heating of the mixture, and the discharging of the mixture can be carried out simultaneously and automatically, greatly shortening the preparation time of pyrrole nitrile, thereby improving the preparation efficiency of pyrrole nitrile.

[0058] The above are all preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A high-efficiency reactor for continuous synthesis of pyrrole carbonitrile, comprising a reactor body (1), characterized in that: The kettle body (1) is provided with a plurality of feed pumps (11) and a discharge pump (12); the discharge pipe of the feed pump (11) is connected to the top of the kettle body (1), the feed pipe of the discharge pump (12) is connected to the bottom of the kettle body (1), and the discharge pipe of the discharge pump (12) is divided into two and is provided with a first electromagnetic valve (121); A stirring unit (2) and a floating plate (3) are provided in the kettle body (1); the floating plate (3) is slidably embedded in the kettle body (1) in a vertical direction; the stirring unit (2) is rotatably arranged on the floating plate (3); the floating plate (3) can be raised and lowered on the stirring unit (2); and a material guide channel (33) is provided on the floating plate (3) and passes through the upper and lower sides of the floating plate (3); and an opening and closing unit (4) is provided at the material guide channel (33); It also includes a plurality of material storage barrels (5) arranged in sequence along the vertical direction. The material storage barrels (5) are arranged horizontally. A partition plate (51) is embedded in the material storage barrel (5) along its own axial direction. The partition plate (51) can slide between the left and right ends of the material storage barrel (5); The left and right ends of the uppermost storage barrel (5) are respectively connected to the two outlet pipes of the discharge pump (12), and the same end of every two adjacent storage barrels (5) is connected through a connecting pipe (52), and a second electromagnetic valve (521) is installed on the connecting pipe (52); the left and right ends of the lowermost storage barrel (5) are connected to the discharge pipe (53), and a third electromagnetic valve (531) is installed on the discharge pipe (53); A plurality of electric heating rods (13) are provided on the kettle body (1) and the material storage barrel (5).

2. The high-efficiency reactor for continuous synthesis of pyrrole carbonitrile according to claim 1, characterized in that: The opening and closing unit (4) comprises a bracket (41) arranged on the floating plate (3), a lifting rod (42) is slidably penetrated through the bracket (41) in the vertical direction, a sealing block (43) for blocking the material guiding channel (33) is arranged on the lifting rod (42), and the lifting rod (42) is connected to the bracket (41) through a first spring (44), and when the first spring (44) is in a natural state, the sealing block (43) will be inserted into the material guiding channel (33); A first magnetic plate (16) is provided at the bottom of the kettle body (1). When the floating plate (3) descends to the lowest state, the first magnetic plate (16) will absorb and fix the lifting rod (42) downward, and the lifting rod (42) will drive the sealing block (43) to descend and separate from the material guide channel (33).

3. The high-efficiency reactor for continuous synthesis of pyrrole carbonitrile according to claim 2, characterized in that: A clamping groove (421) is provided on the side of the lifting rod (42), and a clamping rod (45) is slidably penetrated in the horizontal direction on the bracket (41). The clamping rod (45) is connected to the bracket (41) through a second spring (46). When the second spring (46) is in a natural state, the clamping rod (45) will be clamped in the clamping groove (421), and the sealing block (43) will be located below the material guiding channel (33); A stopper (17) and an annular groove (18) are provided on the inner side wall of the kettle body (1), and a magnetic ring (19) is fixedly installed in the annular groove (18). When the floating plate (3) rises and contacts the stopper (17), the magnetic ring (19) will absorb and fix the clamping rod (45), and the clamping rod (45) will be separated from the clamping groove (421).

4. The high-efficiency reactor for continuous synthesis of pyrrole carbonitrile according to claim 3, characterized in that: The cross-sectional area of ​​the material guiding channel (33) gradually increases from top to bottom, and a second magnetic plate (34) for adsorbing and fixing the sealing block (43) is installed on the groove wall of the material guiding channel (33).

5. The high-efficiency reactor for continuous synthesis of pyrrole carbonitrile according to claim 4, characterized in that: The stirring unit (2) comprises a motor (21) arranged on the kettle body (1), the output shaft of the motor (21) being coaxially arranged with the kettle body (1), and a rotating shaft (22) being coaxially connected to the output shaft of the motor (21), an impeller (23) being mounted on the rotating shaft (22) and being located at the inner bottom wall of the kettle body (1), and the rotating shaft (22) being rotatably arranged to penetrate the floating plate (3), and the impeller (23) being located below the floating plate (3).

6. The high-efficiency reactor for continuous synthesis of pyrrole carbonitrile according to any one of claims 1 to 5, characterized in that: The control unit (6) further comprises a controller (61), a first contact sensor (62) and a plurality of second contact sensors (63), wherein the first contact sensor (62), the second contact sensor (63), the motor (21), the feed pump (11), the discharge pump (12), the first solenoid valve (121), the second solenoid valve (521) and the third solenoid valve (531) are all coupled to the controller (61), the first contact sensor (62) is mounted on the stopper (17) and is provided for the floating plate (3) to rise and contact, and the second contact sensor (63) is mounted on the inner end wall of the storage barrel (5) and is provided for the partition plate (51) to move and contact; When the floating plate (3) rises and contacts the first contact sensor (62), the first contact sensor (62) will send a stirring signal to the controller (61), and the controller (61) will start timing and control the motor (21) to start and the feed pump (11) to stop; When the controller (61) counts to a specified time, the controller (61) controls the feed pump (11) and the discharge pump (12) to open, the first solenoid valve (121) corresponding to the second contact sensor (63) abutted by the partition (51) to open, the second solenoid valve (521) located at the diagonal position of the first solenoid valve (121) to open, the remaining second solenoid valves (521) adjacent to the upper second solenoid valve (521) and located at the diagonal position of the upper second solenoid valve (521) to open, and the third solenoid valve (531) located at the diagonal position of the second solenoid valve (521) opened at the bottom to open, the feed pump (11) will introduce raw materials and ingredients into the kettle body (1), the mixed material in the kettle body (1) will enter the uppermost storage barrel (5), the mixed material in the storage barrel (5) will enter the storage barrel (5) below it, and the mixed material in the lowermost storage barrel (5) will be discharged through the discharge pipe (53); When the partition (51) moves and contacts the second contact sensor (63), the second contact sensor (63) will transmit a static signal to the controller (61), and the controller (61) will control the discharge pump (12) to be closed, the first solenoid valve (121) to be closed, the second solenoid valve (521) to be closed, and the third solenoid valve (531) to be closed.

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