Distillation reaction kettle

Abstract

The utility model discloses a distillation reaction kettle, which comprises a reaction kettle body, a heating cavity and a cover body, the reaction kettle body comprises an inner container and an outer container, a heating cavity and a cover body are formed between the inner container and the outer container, the cover body is connected with a mounting frame, and the cover body and the mounting frame are coaxially hinged on the reaction kettle body; the stirring mechanism is rotationally connected to the cover body, the stirring mechanism comprises a first stirring assembly and a second stirring assembly, and the first stirring assembly and the second stirring assembly enable a target solution to form opposite spiral directions during stirring; the driving motor is mounted on the mounting frame, and the driving motor is in transmission connection with the stirring mechanism. The utility model solves the problems in the background art that when the existing distillation reaction kettle is used for preparing a target mixed solution, the mixed solution rotates along with a stirring paddle during stirring, eddy current is easy to generate, the mixing effect is poor, and the stirring is not uniform.

Description

Technical Field

[0001] This utility model relates to a distillation reactor, belonging to the field of chemical pharmaceutical equipment technology. Background Technology

[0002] In the chemical pharmaceutical industry, distillation reactors are a key piece of process equipment used to complete important production processes such as drug synthesis, solvent recovery, and product purification. These devices integrate reaction and distillation functions, and their performance directly affects the efficiency, safety, and product quality of the pharmaceutical process.

[0003] Existing distillation reactors utilize a stirring paddle with a certain rotational speed to drive the mixture, which is then mixed into a relatively uniform target mixture through collision and impact with the inner wall of the stirring tank and the stirring action of the paddle, as illustrated in Chinese Patent Publication No. CN219423745U. However, in the preparation of the target mixture, the mixture rotates along with the stirring paddle during stirring, which easily generates eddies, resulting in poor mixing effect and uneven stirring. Summary of the Invention

[0004] The purpose of this invention is to provide a distillation reactor that solves the problem mentioned in the background art that when preparing a target mixture, the mixture rotates with the stirring paddle during stirring, which easily generates eddies, resulting in poor mixing effect and uneven stirring.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A distillation reactor, comprising:

[0007] The reactor body includes an inner liner and an outer liner, with a heating chamber formed between the inner liner and the outer liner.

[0008] A cover body, wherein the cover body is connected to a mounting bracket, and the cover body and the mounting bracket are coaxially hinged to the reactor body;

[0009] A stirring mechanism is rotatably connected to the cover. The stirring mechanism includes a first stirring component and a second stirring component. When the first stirring component and the second stirring component are stirring, the target solution forms a spiral direction in opposite directions.

[0010] A drive motor is mounted on the mounting bracket, and the drive motor is connected to the stirring mechanism in a transmission manner.

[0011] Preferably, the first stirring assembly includes:

[0012] A stirring shaft passes through the cover and is rotatably connected to the cover;

[0013] A circular connector is fixedly connected to the end of the stirring shaft; the circular connector is provided with a plurality of first stirring blades at equal intervals around its circumference, and the plurality of first stirring blades are arranged at an angle to the circular connector.

[0014] Preferably, the second stirring assembly includes:

[0015] A fixed disc is fixedly connected to the stirring shaft;

[0016] There are two annular plates, and multiple second stirring blades are installed at equal circumferential intervals between the two annular plates. The rotation direction of the second stirring blades is opposite to that of the first stirring blades.

[0017] Multiple connecting rods are provided, and the multiple connecting rods are used to fix the annular plate to the fixed plate.

[0018] Preferably, the first stirring blade is located between two annular plates.

[0019] Preferably, an annular turbulence mesh is provided between the first stirring blade and the second stirring blade, and the annular turbulence mesh is installed between the two annular plates.

[0020] Preferably, the mounting bracket is provided with a connecting part, the connecting part is connected to a cylinder, the other end of the cylinder is hinged to a cylinder mounting base, the cylinder mounting base is welded to the reactor body, and the cylinder is used to open or close the cover.

[0021] Preferably, a locking device is provided between the reactor body and the cover, the locking device being used to lock the cover onto the reactor body.

[0022] Preferably, the locking device includes:

[0023] The locking rod is hinged to the reactor body via a pin; the locking rod is provided with a threaded structure.

[0024] A locking member, wherein the locking member is provided with a threaded connection portion, the threaded connection portion being threadedly connected to the threaded structure;

[0025] An abutment portion is provided on the cover body, and the abutment portion is provided with a groove, the width of which is greater than the outer diameter of the locking rod and less than the outer diameter of the threaded connection portion.

[0026] Preferably, the cover is provided with multiple steam backup outlets.

[0027] Preferably, the cover is also provided with a raw material solution inlet.

[0028] The beneficial effects of this utility model are:

[0029] Compared with the prior art, this utility model starts a servo motor, which drives the stirring shaft to rotate via a first pulley, a belt, and a second pulley. This causes the circular connector fixedly connected to the end of the stirring shaft and the first stirring blade fixedly mounted on the circular connector to rotate. Simultaneously, the fixed disk fixedly connected to the stirring shaft rotates, and the fixed disk drives the second stirring blade fixedly connected between the two annular plates to rotate via a connecting rod. Since the rotation direction of the second stirring blade is opposite to that of the first stirring blade, the eddies generated by the two stirring the target solution are in opposite directions when they are stirring. This allows the portion of the target solution stirred by the first stirring blade to mix with the portion stirred by the second stirring blade, thus overcoming the eddy phenomenon mentioned in the prior art and improving the mixing effect of the target solution. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0031] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0032] Figure 3 This is a structural schematic diagram of the cover and mounting bracket of this utility model;

[0033] Figure 4 This is a schematic diagram of the stirring mechanism of this utility model;

[0034] Figure 5 This is a schematic diagram showing the position and structure of the first and second stirring blades of this utility model.

[0035] Figure 6 For the present utility model Figure 1 A magnified schematic diagram of the locking mechanism in section A.

[0036] In the diagram: 1. Reactor body; 101. Outer liner; 102. Inner liner; 103. Heating chamber; 2. Electric heater; 3. First resistance thermometer; 4. Second resistance thermometer; 5. Support leg; 6. Cover; 7. Mounting bracket; 701. Connecting part; 8. Drive motor; 9. Cylinder; 10. Stirring shaft; 11. Belt; 12. Second pulley; 13. Steam backup outlet; 14. Raw material solution inlet; 15. Locking rod; 16. Locking element; 17. Abutment part; 18. Circular connecting part; 19. First stirring blade; 20. Circular ring plate; 21. Second stirring blade; 22. Circular turbulence mesh; 23. Connecting rod; 24. Bushing; 25. Fixed plate. Detailed Implementation

[0037] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The following disclosure provides numerous different embodiments or examples of various structures for implementing embodiments of the present invention. To simplify the disclosure of embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0041] like Figures 1-6 As shown, a distillation reactor includes: a reactor body 1, a cover 6, a stirring mechanism, and a drive motor 8.

[0042] The specific reactor body 1 includes an inner liner 102 and an outer liner 101, with a heating chamber 103 formed between the inner liner 102 and the outer liner 101. An electric heater 2 is installed on the reactor body 1, and an electric heating element is disposed in the heating chamber 103. The electric heating element is connected to the electric heater 2. The connection method between the electric heating element and the electric heater 2 is existing technology and will not be described in detail. A heat transfer oil inlet and a heat transfer oil outlet are provided on the outer liner 101. The heat transfer oil inlet is used to fill the heating chamber 103 with heat transfer oil, and the heat transfer oil outlet is used to replace the heat transfer oil. Both are sealed with sealing plugs when not in use. Four support legs 5 are fixedly installed at the bottom of the reactor body 1, and the four support legs 5 are arranged symmetrically in pairs. The inner liner 102 and the cover 6 together form a closed stirring chamber. A first resistance thermometer 3 and a second resistance thermometer 4 are also installed on the reactor body 1. The first resistance thermometer 3 penetrates the inner liner 102 and extends into the stirring chamber, and is used to detect the temperature of the target solution within the stirring chamber. The second resistance thermometer 4 is connected to the heating chamber 103 and is used to detect the temperature of the heat transfer oil within the heating chamber 103. A discharge pipe is connected to the bottom of the inner liner 102, and a discharge valve is installed on the discharge pipe for opening or closing the discharge pipe channel. The discharge valve is existing technology.

[0043] The cover 6 is fixedly connected to a mounting bracket 7. The cover 6 and the mounting bracket 7 are coaxially hinged to the reactor body 1, allowing personnel to open the cover 6 to clean the inner liner 102 or add solid raw materials to the inner liner 102. The cover 6 has multiple spare steam output ports 13 to simultaneously supply steam to multiple devices. When not supplying other devices, the spare steam output ports 13 are sealed with plugs and clamps. The cover 6 also has two raw material solution inlet ports 14, allowing the required raw material solution to be added to the inner liner 102 of the reactor body 1. These ports are connected to the raw material solution supply pipe during use.

[0044] A stirring mechanism is rotatably connected to the cover 6 and extends into the inner liner 102. The stirring mechanism includes a first stirring component and a second stirring component. When the first stirring component and the second stirring component are stirring, they cause the target solution to form opposite spiral directions, thereby causing the target solution stirred by the first stirring component and the target solution stirred by the second stirring component to be mixed in a turbulent manner, so as to achieve a more uniform and thorough mixing effect. A drive motor 8, the drive motor 8 of this application is a servo motor. The servo motor is mounted on the mounting bracket 7. The output shaft of the servo motor passes through the mounting plate of the mounting bracket 7 and is fixedly connected to a first belt pulley 11. The output shaft is rotatably connected to the mounting plate. A second belt pulley 12 is fixedly connected to the stirring shaft 10 of the stirring mechanism. The first belt pulley 11 and the second belt pulley 12 are connected by a belt 11, and the outer diameter of the first belt pulley 11 is smaller than the outer diameter of the second belt pulley 12.

[0045] In a preferred embodiment, the first stirring assembly includes: a stirring shaft 10, which passes through the cover 6 and is rotatably connected to the cover 6; a circular connector 18, which is fixedly connected to the end of the stirring shaft 10; the circular connector 18 is provided with a plurality of first stirring blades 19 at equal intervals around its circumference, and each of the first stirring blades 19 is provided with a slot, which is engaged with the circular connector 18 and then welded by a welding gun, and the plurality of first stirring blades 19 are arranged at an angle to the circular connector 18. The second stirring assembly includes: a fixed disk 25, which is fixedly connected to the stirring shaft 10 by a key, and the fixed disk is rotatably connected to a bushing 24, which is fixedly connected to the cover 6; two annular plates 20, which are axially spaced apart, and a plurality of second stirring blades 21 are circumferentially evenly installed between the two annular plates 20, the rotation direction of the second stirring blades 21 being opposite to the rotation direction of the first stirring blade 19; and multiple connecting rods 23, which are used to fix the annular plates 20 to the fixed disk by bolts. Specifically, each connecting rod 23 has an internal threaded hole at its end, and the bolt passes through the two annular plates 20 and is threaded into the internal threaded hole. The first stirring blade 19 is located between the two annular plates 20.

[0046] To further improve the mixing effect of the target solution, an annular turbulence mesh 22 is provided between the first stirring blade 19 and the second stirring blade 21. The annular turbulence mesh 22 is installed between the two annular plates 20. After the target solution stirred by the first stirring component passes through the mesh of the annular turbulence mesh 22, it is turbulent by the annular turbulence mesh 22 and then mixed with the target solution stirred by the second stirring component in a vortex direction opposite to that of the first stirring component, so as to achieve further mixing and further improve the mixing effect of the target solution.

[0047] In a preferred embodiment, the mounting bracket 7 is provided with a connecting part 701, which is hinged to the free end of the cylinder 9. The other end of the cylinder 9 is hinged to the cylinder 9 mounting seat. The cylinder 9 mounting seat is fixedly connected to the reactor body 1 and welded to the reactor body 1. The cylinder 9 is used to open or close the cover 6. It should be noted that the cylinder 9 in this document is connected to the air compressor and solenoid valve of the air supply system, and the cylinder 9, air compressor, and solenoid valve air supply system are all prior art and will not be described in detail here.

[0048] In a preferred embodiment, a locking device is provided between the reactor body 1 and the cover 6, the locking device being used to lock the cover 6 onto the reactor body 1. Specifically, the locking device includes:

[0049] A locking rod 15 is hinged to a hinged portion on the reactor body 1 via a pin; the locking rod 15 has a threaded structure; a locking member 16 has a threaded connection portion 701, which is threadedly connected to the threaded structure; an abutment portion 17 is disposed on the cover 6, and the abutment portion 17 has a slot, the width of which is greater than the outer diameter of the locking rod 15 and less than the outer diameter of the threaded connection portion 701. The locking member 16 has a locked position and an unlocked position. When the locking member 16 is in the locked position, the locking rod 15 is located in the slot, and the locking member 16 abuts against the abutment portion 17; when the locking member 16 is in the unlocked position, by twisting the locking member 16, the locking member 16 is disengaged from the abutment portion 17, and then the locking rod 15 is rotated to disengage from the slot, thereby achieving the purpose of unlocking. Multiple locking devices are arranged along the circumference of the cover 6.

[0050] Principle: The servo motor is started, and the servo motor drives the stirring shaft 10 to rotate through the first belt pulley 11, the belt 11 and the second belt pulley 12. This causes the circular connector 18 fixedly connected to the end of the stirring shaft 10 and the first stirring blade 19 fixedly mounted on the circular connector 18 to rotate. At the same time, the fixed disk fixedly connected to the stirring shaft 10 rotates. The fixed disk is driven by the connecting rod 23 to rotate the second stirring blade 21 fixedly connected between the two annular plates 20. Since the rotation direction of the second stirring blade 21 is opposite to that of the first stirring blade 19, when they stir, the eddies generated by the two stirring the target solution are exactly opposite in direction. This allows the portion of the target solution stirred by the first stirring blade 19 to mix with the portion stirred by the second stirring blade 21, thus overcoming the eddy phenomenon mentioned in the background art and improving the mixing effect of the target solution.

[0051] It should also be noted that each connection is equipped with a sealing element for sealing. All sealing elements at each connection are existing technologies. The material selection of the distillation reactor must strictly meet the requirements of corrosion resistance, high temperature resistance, and sanitary standards to ensure the safety and quality of drug production, such as 316L stainless steel or nickel-based alloys, etc., which will not be elaborated here.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A distillation reactor characterized by, The utility model relates to a reaction kettle, which comprises: a reaction kettle body comprising an inner container and an outer container, a heating cavity being formed between the inner container and the outer container, a cover body connected with a mounting frame, the cover body and the mounting frame being coaxially hinged to the reaction kettle body, a stirring mechanism rotatably connected to the cover body, the stirring mechanism comprising a first stirring assembly and a second stirring assembly, the first stirring assembly and the second stirring assembly being configured to form opposite helical directions for a target solution during stirring, a driving motor mounted on the mounting frame and in transmission connection with the stirring mechanism.

2. A distillation reaction still according to claim 1, wherein, The first stirring assembly comprises: a stirring shaft penetrating through the cover body and rotatably connected to the cover body, a circular connector fixedly connected to an end of the stirring shaft, the circular connector being provided with a plurality of first stirring blades at equal intervals in a circumferential direction, and the first stirring blades being arranged at an angle with the circular connector.

3. A distillation reaction still according to claim 2, wherein, The second stirring assembly comprises: a fixed disc fixedly connected to the stirring shaft, a circular ring plate provided with a plurality of second stirring blades mounted at equal intervals in a circumferential direction between two circular ring plates, the second stirring blades being arranged in a rotation direction opposite to that of the first stirring blades, a plurality of connecting rods for fixedly connecting the circular ring plate to the fixed disc.

4. A distillation reaction still according to claim 3, wherein The first stirring blades are located between the two circular ring plates.

5. A distillation reaction still according to claim 4, wherein: An annular turbulence grid is arranged between the first stirring blades and the second stirring blades, and the annular turbulence grid is mounted between the two circular ring plates.

6. The distillation reaction still according to claim 1 or 5, characterized in that: The mounting frame is provided with a connecting portion hingedly connected with a pneumatic cylinder, the other end of the pneumatic cylinder being hingedly connected to a pneumatic cylinder mounting seat, the pneumatic cylinder mounting seat being welded to the reaction kettle body, and the pneumatic cylinder being used for opening or closing the cover body.

7. A distillation reaction still according to claim 6, wherein: A lock is arranged between the reaction kettle body and the cover body, and the lock is used for locking the cover body on the reaction kettle body.

8. A distillation reaction still according to claim 7, wherein: The lock comprises: a locking rod hingedly connected to the reaction kettle body by a pin shaft, the locking rod being provided with a threaded structure, a locking member provided with a threaded connecting portion, the threaded connecting portion being threadedly connected to the threaded structure, an abutting portion provided on the cover body, the abutting portion being provided with a slot, the width of the slot being greater than the outer diameter of the locking rod and less than the outer diameter of the threaded connecting portion.

9. A distillation reaction still according to claim 6, wherein: A plurality of steam standby outlets are provided on the cover body.

10. The distillation reaction kettle of claim 7, wherein: A raw material solution inlet is further provided on the cover body.

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