Multifunctional reaction kettle for automatic production of 4, 6-dichloro-5-methoxypyrimidine

Abstract

The utility model discloses a multifunctional reaction kettle for automatic production of 4, 6-dichloro-5-methoxypyrimidine, which relates to the technical field of chemical production and comprises a jacket, a feed stirring unit and an automatic control unit. The jacket is arranged on the outer side of the middle lower section of the kettle body, and a heating device is embedded in the jacket. The reaction kettle is provided with the reliable feeding and stirring unit, can independently feed solid and liquid reaction raw materials in different forms, has the functions of heating the kettle body, stirring materials and the like, and can effectively improve the speed of chemical reaction; the device is further provided with an automatic control unit, the single injection amount of each material can be set through a touch screen on the front side of a control center, after the introduction amount of the reaction raw materials reaches a set value, a microcomputer sends out a control signal to close each channel, and discharging is continued after the current reaction is completed, so that automatic, connected and efficient processing production is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production, in particular to a multifunctional reaction kettle for the automated production of 4,6-dichloro-5-methoxypyrimidine. Background Art

[0002] 4,6-Dichloro-5-methoxypyrimidine is an important chemical substance commonly used in the synthesis of pharmaceutical intermediates and can also be used as an intermediate for sulfamethoxypyrimidine. In the chemical industry, there are many methods for preparing and producing 4,6-dichloro-5-methoxypyrimidine. One production process uses 4,6-dichloropyrimidine as a raw material, reacting it with an organic solution of carbon tetrachloride, chlorine gas, and phosphorus oxychloride in a microreactor to produce 4,5,6-trichloropyrimidine. Liquid sodium methoxide is then used to heat the reactor and control the residence time of the reaction to produce 4,6-dichloro-5-methoxypyrimidine.

[0003] The reactor used for the production of 4,6-dichloro-5-methoxypyrimidine in the prior art has a relatively simple structure at the feed end, and various materials share the same feed channel. The three solid and liquid raw materials required for the above-mentioned production process cannot be independently fed, and the various reactants are easily reacted during feeding. In addition, the function of the reactor is relatively single, lacking effective support for increasing the reaction rate. The degree of automation of the reactor is also low, and it cannot support continuous and efficient production and processing. Therefore, we propose a multifunctional reactor for the automated production of 4,6-dichloro-5-methoxypyrimidine. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a multifunctional reactor for the automated production of 4,6-dichloro-5-methoxypyrimidine. The reactor has a reliable feeding and stirring unit, can independently feed three different forms of reaction raw materials, solid and liquid, and has the functions of heating the reactor body and stirring the materials, which can effectively improve the rate of chemical reaction; the reactor also has an automatic control unit, and the single injection amount of each material can be set through the touch screen on the front side of the control center. When the amount of reaction raw materials introduced reaches the set value, the microcomputer sends a control signal to close each channel, and continues to discharge the material after the current reaction is completed, thereby realizing automatic, connected and efficient processing and production, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a multifunctional reactor for the automated production of 4,6-dichloro-5-methoxypyrimidine, comprising a jacket, a feeding and stirring unit, and an automatic control unit;

[0006] Jacket: arranged on the outside of the lower middle section of the kettle body, and a heating device is embedded in the inside of the jacket;

[0007] Feed stirring unit: comprises a solid material channel, a liquid inlet pipe, an air inlet pipe, a transmission column, a stirring frame, a solenoid valve and a discharge pipe. The upper right corner of the kettle body is fixedly connected with an obliquely upward solid material channel, and the upper left side of the kettle body is installed with a liquid inlet pipe and an air inlet pipe. Both the liquid inlet pipe and the air inlet pipe are L-shaped structures, and their lower ends lead to the interior of the kettle body. A vertical transmission column is installed at the middle position inside the kettle body, and the upper end of the transmission column is rotatably connected to the middle position of the top of the kettle body. A spiral stirring frame is fixedly connected to the outer side of the middle and lower sections of the transmission column. A power device connected to the transmission column is installed at the upper end of the kettle body. The discharge pipe is fixedly connected to the lower side of the kettle body. The discharge pipe vertically passes through the jacket, and a solenoid valve is installed in the middle section of the discharge pipe.

[0008] Automatic control unit: installed on the upper end and front side of the kettle body.

[0009] The jacket is installed on the outside of the kettle body and can heat the kettle body through an internal heating device to provide a temperature suitable for the chemical reaction. The discharge pipe on the lower side of the kettle body is used to discharge the product downward, and the solenoid valve is used to control the opening and closing of the discharge pipe; the solid material channel is used to introduce the solid material required for the reaction into the interior of the kettle body, and the liquid inlet pipe and the air inlet pipe are used to introduce the solution and gas required for the reaction into the interior of the kettle body respectively, thereby meeting the needs of various raw materials in different forms; when the transmission column rotates, the spiral stirring rack can continuously stir the reaction substances in the kettle body, so that various raw materials are in uniform contact, thereby further improving the reaction rate; the automatic control unit can automatically input various reaction raw materials in a quantitative manner, thereby achieving continuous and efficient production.

[0010] Furthermore, the feed stirring unit further includes a motor mount and an electric motor. The motor mount is fixedly connected to the center of the upper end of the kettle body. The motor is mounted and clamped on the upper end of the motor mount. A sealed bearing is embedded and installed inside the lower section of the motor mount. The output shaft of the motor passes downward through the inner ring side of the sealed bearing and is fixedly connected to the inner part of the center axis of the upper end of the transmission column. The motor mount is used to install and clamp the motor, which provides the power required for the rotation of the transmission column.

[0011] Furthermore, the automatic control unit includes an electric gate, an electronic scale, a liquid storage tank, and a liquid flow valve. The electric gate is installed in the middle section of the solid material channel. The gate plate of the electric gate is horizontally slidably connected to the interior of the solid material channel, and an electronic scale is embedded in the upper end of the gate plate. The section of the liquid inlet pipe located on the upper side of the kettle body is connected to the liquid storage tank and the liquid flow valve in sequence, and the liquid flow valve is fixed to the upper side of the kettle body. The electric gate is used to control the opening and closing of the solid material channel. When the solid material channel is closed, the electronic scale embedded in the upper side of the gate plate can weigh the solid material that falls into it. When the set value is reached, the electric gate opens, and the reaction material slides into the interior of the kettle body. The liquid storage tank is used to temporarily store the reaction solution, and the liquid flow valve is used to measure the solution passing through. When the set amount is reached, the injection of the solution is stopped.

[0012] Furthermore, the automatic control unit also includes a gas flow valve, a one-way gas valve and a control center. The air inlet pipe is located in a section inside the kettle body and extends vertically to the bottom of the kettle body, and a one-way gas valve is installed at its lower end. A gas flow valve is installed at the port of the air inlet pipe. The front side of the kettle body is installed with a control center, which consists of an internal microcomputer and a touch display screen on the front side. The input ends of the electric gate, electronic scale, liquid flow valve and gas flow valve are all bidirectionally electrically connected to the data port of the microcomputer in the control center. The gas flow valve is used to quantitatively control the gas introduced into the kettle body. The lower end of the air inlet pipe is close to the bottom of the kettle body, so that the gas can pass into the interior of the solution, so that the various reaction raw materials can effectively react. The one-way gas valve can prevent the reaction material from flowing back along the lower end of the air inlet pipe; the control center is used to receive data information from the gas flow valve, liquid flow valve and electronic scale, and send control signals to realize the opening and closing control of each feed channel; the single injection volume of each material can be set through the touch screen on the front side of the control center. When the input amount of the reaction raw material reaches the set value, the microcomputer sends a control signal to close each channel, and continue to discharge the material after the current reaction is completed, thereby realizing automatic, connected and efficient processing and production.

[0013] Furthermore, the device further comprises a support and a base. The lower end of the jacket is fixedly connected to three support pillars in a circumferential array, and the lower end of each support pillar is fixedly connected to a disc-shaped base. The support pillars are used to support the device, and the base makes the device more stable.

[0014] Furthermore, the device also includes connecting rods and a safety valve. A horizontal connecting rod is fixedly connected between every two adjacent pillars, and a safety valve is installed at the front upper side of the kettle. The triangular structure formed by the three connecting rods can enhance the overall structural stability of the device. The safety valve can prevent excessive pressure inside the kettle, thereby ensuring safe production.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the multifunctional reactor for the automated production of 4,6-dichloro-5-methoxypyrimidine has the following advantages:

[0016] 1. It has a reliable feeding and stirring unit, which can independently feed three different forms of reaction raw materials, solid and liquid, and has the functions of kettle heating and stirring materials, which can effectively increase the rate of chemical reaction;

[0017] 2. It has an automatic control unit. The single injection volume of each material can be set through the touch screen on the front side of the control center. When the amount of reaction raw materials introduced reaches the set value, the microcomputer sends a control signal to close each channel and continue to discharge the material after the current reaction is completed, thus realizing automatic, connected and efficient processing and production;

[0018] 3. The utility model has a reliable feeding and stirring unit, which can independently feed three different forms of reaction raw materials, solid and liquid, and has the functions of kettle heating and stirring materials, which can effectively improve the rate of chemical reaction; it also has an automatic control unit, and the single injection volume of each material can be set through the touch screen on the front side of the control center. When the input amount of the reaction raw material reaches the set value, the microcomputer sends a control signal to close each channel, and continues to discharge the material after the current reaction is completed, thereby realizing automatic, connected and efficient processing and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a partial cross-sectional view of the utility model;

[0021] Figure 3 This is a schematic diagram of the oblique upper structure of the utility model.

[0022] In the figure: 1 jacket, 2 kettle body, 3 feeding stirring unit, 31 solid material channel, 32 liquid inlet pipe, 33 air inlet pipe, 34 motor mounting base, 35 electric motor, 36 transmission column, 37 stirring frame, 38 solenoid valve, 39 discharge pipe, 4 automatic control unit, 41 electric gate, 42 electronic scale, 43 liquid storage tank, 44 liquid flow valve, 45 gas flow valve, 46 one-way air valve, 47 control center, 5 pillar, 6 base, 7 connecting rod, 8 safety valve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 3 , this embodiment provides a technical solution: a multifunctional reactor for automated production of 4,6-dichloro-5-methoxypyrimidine, comprising a jacket 1, a feeding and stirring unit 3, and an automatic control unit 4;

[0025] Jacket 1: arranged on the outside of the lower middle section of the kettle body 2, and a heating device is embedded in the inside of the jacket 1;

[0026] The feeding and stirring unit 3: comprises a solid material channel 31, a liquid inlet pipe 32, an air inlet pipe 33, a transmission column 36, a stirring frame 37, a solenoid valve 38 and a discharge pipe 39. The upper right corner of the kettle body 2 is fixedly connected with the obliquely upward solid material channel 31, the upper left side of the kettle body 2 is installed with a liquid inlet pipe 32 and an air inlet pipe 33, both of which are L-shaped structures, and their lower ends both lead to the interior of the kettle body 2, a vertical transmission column 36 is installed at the middle position inside the kettle body 2, the upper end of the transmission column 36 is rotatably connected to the middle position of the top of the kettle body 2, the outer side of the middle and lower section of the transmission column 36 is fixedly connected with a spiral stirring frame 37, the upper end of the kettle body 2 is installed with a power device connected to the transmission column 36, the lower side of the kettle body 2 is fixedly connected with the discharge pipe 39, the discharge pipe 39 vertically passes through the jacket 1, and a solenoid valve 38 is installed in the middle section of the discharge pipe 39;

[0027] Automatic control unit 4: installed on the upper end and front side of the kettle body 2.

[0028] The jacket 1 is installed on the outside of the kettle body 2 and can heat the kettle body 2 through an internal heating device to provide a temperature suitable for the chemical reaction. The discharge pipe 39 on the lower side of the kettle body 2 is used to discharge the product downward, and the solenoid valve 38 is used to control the opening and closing of the discharge pipe 39; the solid material channel 31 is used to introduce the solid material required for the reaction into the interior of the kettle body 2, and the liquid inlet pipe 32 and the air inlet pipe 33 are respectively used to introduce the solution and gas required for the reaction into the interior of the kettle body 2, thereby meeting the processing needs of various raw materials in different forms; when the transmission column 36 rotates, the spiral stirring rack 37 can continuously stir the reaction material in the kettle body 2, so that the various raw materials are evenly contacted, thereby further improving the reaction rate; the automatic control unit 4 can automatically input various reaction raw materials in a quantitative manner, thereby achieving continuous and efficient production.

[0029] The feed stirring unit 3 further includes a motor mount 34 and a motor 35. The motor mount 34 is fixedly connected to the center of the upper end of the kettle body 2. The motor 35 is mounted and clamped on the upper end of the motor mount 34. A sealed bearing is embedded and installed inside the lower section of the motor mount 34. The output shaft of the motor 35 passes downward through the inner ring side of the sealed bearing and is fixedly connected to the inner side of the center axis of the upper end of the transmission column 36. The motor mount 34 is used to install and clamp the motor 35, which provides the power required for the rotation of the transmission column 36.

[0030] The automatic control unit 4 includes an electric gate 41, an electronic scale 42, a liquid storage tank 43, and a liquid flow valve 44. The electric gate 41 is installed in the middle section of the solid material channel 31. The gate of the electric gate 41 is horizontally slidably connected to the interior of the solid material channel 31, and the electronic scale 42 is embedded in the upper end of the gate. The section of the liquid inlet pipe 32 located on the upper side of the kettle body 2 is connected to the liquid storage tank 43 and the liquid flow valve 44 in sequence. The liquid flow valve 44 is fixed to the upper side of the kettle body 2. The electric gate 41 is used to control the opening and closing of the solid material channel 31. When the solid material channel 31 is closed, the electronic scale 42 embedded in the upper side of the gate can weigh the solid material that falls into it. When the set value is reached, the electric gate 41 opens, and the reaction material slides into the interior of the kettle body 2. The liquid storage tank 43 is used to temporarily store the reaction solution. The liquid flow valve 44 is used to measure the solution passing through. When the set amount is reached, the solution injection is stopped.

[0031] The automatic control unit 4 also includes a gas flow valve 45, a one-way gas valve 46 and a control center 47. The air inlet pipe 33 is located in a section inside the kettle body 2 and extends vertically to the bottom of the kettle body, and a one-way gas valve 46 is installed at its lower end. The gas flow valve 45 is installed at the end of the air inlet pipe 33. The control center 47 is installed on the front side of the kettle body 2. The control center 47 consists of an internal microcomputer and a touch display screen on the front side. The input ends of the electric gate 41, electronic scale 42, liquid flow valve 44 and gas flow valve 45 are all bidirectionally electrically connected to the data port of the microcomputer in the control center 47. The gas flow valve 45 is used to quantitatively control the gas entering the interior of the kettle body 2. The lower end of the air inlet pipe 33 is close to the bottom of the kettle body 2, so that the gas can enter the interior of the solution, so that the various reaction raw materials can effectively react. The one-way air valve 46 can prevent the reaction material from flowing back along the lower end of the air inlet pipe 33; the control center 47 is used to receive data information from the gas flow valve 45, the liquid flow valve 44 and the electronic scale 42, and send control signals to realize the opening and closing control of each feed channel; the single injection amount of each material can be set through the touch screen on the front side of the control center 47. When the amount of reaction raw materials introduced reaches the set value, the microcomputer sends a control signal to close each channel, and continue to discharge the material after the current reaction is completed, thereby realizing automatic, connected and efficient processing and production.

[0032] It also includes pillars 5 and a base 6. The lower end of the jacket 1 is fixedly connected to three pillars 5 in a circumferential array, and the lower end of each pillar 5 is fixedly connected to a disc-shaped base 6. The pillars 5 are used to support the equipment, and the base 6 makes the device more stable.

[0033] The device also includes a connecting rod 7 and a safety valve 8. A horizontal connecting rod 7 is fixedly connected between every two adjacent pillars 5, and a safety valve 8 is installed at the front upper side of the kettle body 2. The triangular structure formed by the three connecting rods 7 can enhance the structural stability of the entire device. The safety valve 8 can prevent the internal pressure of the kettle body 2 from being too high, thereby ensuring safe production.

[0034] The working principle of a multifunctional reactor for the automated production of 4,6-dichloro-5-methoxypyrimidine provided by the present invention is as follows: the reactor has a reliable feeding and stirring unit 3, which can independently feed three different forms of reaction raw materials, solid and liquid, and has the functions of heating the reactor body and stirring the materials, which can effectively improve the rate of chemical reaction: the jacket 1 is installed on the outside of the reactor body 2, and can heat the reactor body 2 through the internal heating device to provide a temperature suitable for the chemical reaction. The discharge pipe 39 on the lower side of the reactor body 2 is used to discharge the product downward, and the solenoid valve 3 is connected to the reactor body 2. 8 is used to control the opening and closing of the discharge pipe 39; the solid material channel 31 is used to introduce the solid material required for the reaction into the interior of the kettle body 2, and the liquid inlet pipe 32 and the air inlet pipe 33 are respectively used to introduce the solution and gas required for the reaction into the interior of the kettle body 2, thereby meeting the processing needs of various raw materials in different forms; the motor mounting seat 34 is used for the installation and fixing of the motor 35, and the motor 35 provides the power required for the rotation of the transmission column 36. When the transmission column 36 rotates, the spiral stirring frame 37 can continuously stir the reaction material in the kettle body 2, so that various raw materials are in uniform contact, thereby further improving the reaction rate. The reactor also has an automatic control unit 4. The single injection amount of each material can be set through the touch screen on the front side of the control center 47. When the amount of reaction raw materials introduced reaches the set value, the microcomputer sends a control signal to close each channel and continue to discharge the material after the current reaction is completed, thereby realizing automatic, connected and efficient processing and production: the electric gate 41 is used to control the opening and closing of the solid material channel 31. When the solid material channel 31 is closed, the electronic scale 42 embedded on the upper side of the gate can weigh the solid material that falls in. When the set value is reached, the electric gate is turned off. When the dynamic gate 41 opens, the reaction materials slide into the interior of the kettle 2. The liquid storage tank 43 is used to temporarily store the reaction solution. The liquid flow valve 44 is used to measure the solution passing through. When the set amount is reached, the injection of the solution is stopped. The gas flow valve 45 is used to quantitatively control the gas entering the interior of the kettle 2. The lower end of the air inlet pipe 33 is close to the bottom of the kettle 2, so that the gas can pass into the interior of the solution, so that the various parts of the reaction raw materials can effectively react. The one-way air valve 46 can prevent the reaction materials from flowing back along the lower end of the air inlet pipe 33. In addition, the pillar 5 is used to support the equipment, the base 6 makes the device more stable, and the triangular structure formed by the three connecting rods 7 can enhance the overall structural stability of the device. The safety valve 8 can prevent the internal pressure of the kettle 2 from being too high, thereby ensuring safe production.

[0035] It is noteworthy that the input ends of the motor 35, solenoid valve 38, electric gate 41, electronic scale 42, liquid flow valve 44, gas flow valve 45, and the internal heating device of the jacket 1 disclosed in the above embodiment are all bidirectionally electrically connected to the control center 47. The microcomputer in the control center 47 is electrically connected to the output end of the external power supply through the external control switch group. The control center 47 controls the operation of the above electrical devices using methods commonly used in the prior art.

[0036] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multifunctional reactor for automated production of 4,6-dichloro-5-methoxypyrimidine, characterized by: It comprises a jacket (1), a feeding and stirring unit (3) and an automatic control unit (4); The jacket (1) is arranged on the outer side of the middle and lower section of the kettle body (2), and a heating device is embedded in the interior of the jacket (1); The feeding and stirring unit (3) comprises a solid material channel (31), a liquid inlet pipe (32), an air inlet pipe (33), a transmission column (36), a stirring frame (37), a solenoid valve (38) and a discharge pipe (39). The upper right corner of the kettle body (2) is fixedly connected with an upwardly inclined solid material channel (31). The upper left side of the kettle body (2) is provided with a liquid inlet pipe (32) and an air inlet pipe (33). Both the liquid inlet pipe (32) and the air inlet pipe (33) are L-shaped structures, and their lower ends are connected to the interior of the kettle body (2). The kettle body (2) A vertical transmission column (36) is installed at the middle position of the interior, the upper end of the transmission column (36) is rotatably connected to the middle position of the top of the kettle body (2), a spiral stirring frame (37) is fixedly connected to the outer side of the middle and lower sections of the transmission column (36), a power device connected to the transmission column (36) is installed at the upper end of the kettle body (2), a discharge pipe (39) is fixedly connected to the lower side of the kettle body (2), the discharge pipe (39) vertically passes through the jacket (1), and a solenoid valve (38) is installed in the middle section of the discharge pipe (39); Automatic control unit (4): installed on the upper end and front side of the kettle body (2).

2. The multifunctional reactor for automated production of 4,6-dichloro-5-methoxypyrimidine according to claim 1, characterized in that: The feeding stirring unit (3) further comprises a motor mounting seat (34) and a motor (35); the motor mounting seat (34) is fixedly connected to the center position of the upper end of the kettle body (2); the motor (35) is mounted on the upper end of the motor mounting seat (34); a sealed bearing is embedded in the lower section of the motor mounting seat (34); the output shaft of the motor (35) passes downward through the inner ring side of the sealed bearing and is fixedly connected to the inside of the central axis position of the upper end of the transmission column (36).

3. The multifunctional reactor for automated production of 4,6-dichloro-5-methoxypyrimidine according to claim 1, characterized in that: The automatic control unit (4) comprises an electric gate (41), an electronic scale (42), a liquid storage tank (43) and a liquid flow valve (44). The electric gate (41) is installed in the middle section of the solid material channel (31). The gate plate of the electric gate (41) is horizontally slidably connected to the interior of the solid material channel (31), and the electronic scale (42) is embedded and installed on the upper end of the gate plate. A section of the liquid inlet pipe (32) located on the upper side of the kettle body (2) is connected to the liquid storage tank (43) and the liquid flow valve (44) in sequence. The liquid flow valve (44) is fixedly installed on the upper side of the kettle body (2).

4. The multifunctional reactor for automated production of 4,6-dichloro-5-methoxypyrimidine according to claim 3, characterized in that: The automatic control unit (4) further comprises a gas flow valve (45), a one-way gas valve (46) and a control center (47). The air inlet pipe (33) is located in a section inside the kettle body (2) and extends vertically to the bottom of the kettle body, and a one-way gas valve (46) is installed at its lower end. The gas flow valve (45) is installed at the end of the air inlet pipe (33). The control center (47) is installed on the front side of the kettle body (2). The control center (47) comprises an internal microcomputer and a touch screen on the front side. The input ends of the electric gate (41), the electronic scale (42), the liquid flow valve (44) and the gas flow valve (45) are all bidirectionally electrically connected to the data port of the microcomputer in the control center (47).

5. The multifunctional reactor for automated production of 4,6-dichloro-5-methoxypyrimidine according to claim 1, characterized in that: It also includes pillars (5) and a base (6). The lower end of the jacket (1) is fixedly connected to three pillars (5) in a circumferential array, and the lower end of each pillar (5) is fixedly connected to a disc-shaped base (6).

6. The multifunctional reactor for automated production of 4,6-dichloro-5-methoxypyrimidine according to claim 5, characterized in that: It also includes a connecting rod (7) and a safety valve (8). A horizontal connecting rod (7) is fixedly connected between every two adjacent pillars (5). A safety valve (8) is installed at the front position on the upper side of the kettle body (2).

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