Parallel experimental equipment for photochemical synthesis reaction in low-temperature environment

Abstract

The utility model relates to the technical field of photochemical reaction, and discloses parallel experimental equipment for photochemical synthesis reaction in a low-temperature environment, which comprises a shell and a support table, the support table is fixed in the shell, a plurality of parallel reaction tubes are arranged above the support table, and light units are arranged in the parallel reaction tubes; a main gear and a plurality of pinions are rotationally mounted on the supporting table, the main gear is arranged in the center of the supporting table, parallel reaction tubes are correspondingly arranged above the pinions, a cylindrical heat conduction cylinder is further fixedly arranged in the shell, and a cooling tube is spirally wound on the heat conduction cylinder; in the reaction process, due to the fact that each parallel reaction tube is internally provided with the light unit, the illumination condition and the reaction process in each reaction tube can be independently controlled, only part of the reaction tubes can be started for reaction, other reaction tubes which are not started are not affected, and the flexibility and the experiment efficiency of the device are improved through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of photochemical reactions, in particular to parallel experimental equipment for photochemical synthesis reactions in a low-temperature environment. Background Art

[0002] In recent years, photochemical synthesis has gained widespread application in the pharmaceutical field due to its green, environmentally friendly, and renewable advantages. Compared to traditional mercury and xenon lamps, LED lamps, with their low heat release and excellent monochromaticity, have become the preferred light source for photochemical synthesis equipment. LED lamps not only precisely select a single wavelength, avoiding side reactions caused by stray light sources, but also, due to their low heat generation, reduce the impact on reactions and light source life, thereby improving overall experimental stability and reliability. Furthermore, continuous flow technology, with its high reaction efficiency, high conversion rate, and safety and environmental advantages, has gradually become a key tool in the pharmaceutical synthesis field in recent years. The combination of these technologies provides a more efficient, reliable, and sustainable solution for pharmaceutical synthesis, driving innovation and development in the industry.

[0003] However, there are some problems with the current photochemical parallel reactors on the market, especially they cannot be used for low-temperature chemical reactions. For example, a high-throughput refrigeration reaction device with publication number CN217473509U cannot control the temperature and observe each parallel reaction tube individually during use, and each parallel reaction tube can only be started and ended synchronously. These limitations limit its practicality and flexibility in actual applications. Utility Model Content

[0004] (1) Technical problems solved: In response to the shortcomings of the existing technology, the present invention provides a parallel experimental equipment for photochemical synthesis reactions in a low-temperature environment. It has the advantage of being able to control the illumination and temperature of each parallel reaction tube by independent illumination during the photochemical synthesis reaction in a low-temperature environment, thus solving the problem that each parallel reaction tube cannot react and control the temperature independently when using the existing equipment.

[0005] (2) Technical solution: In order to achieve the purpose of being able to control the illumination and temperature of parallel reaction tubes by independent illumination in the above-mentioned photochemical synthesis reaction under a low-temperature environment, the present invention provides the following technical solution: A parallel experimental equipment for photochemical synthesis reaction under a low-temperature environment, comprising a shell and a support platform, the support platform being fixed in the shell, a plurality of parallel reaction tubes being arranged above the support platform, and a light unit being arranged in the parallel reaction tubes; a main gear and a plurality of pinion gears are rotatably mounted on the support platform, the main gear being arranged at the center of the support platform, the pinion gears being meshed in opposite directions along the circumference of the main gear, a parallel reaction tube being arranged correspondingly above each of the pinion gears, and a magnetic stirring unit being arranged on the pinion gear; a cylindrical heat-conducting tube is also fixedly arranged in the shell, a cooling tube is spirally wound on the heat-conducting tube, and a compressor is connected to the bottom of the cooling tube.

[0006] Preferably, a motor is provided at the bottom of the main gear, and the motor is fixedly mounted on the support platform.

[0007] Preferably, the main gear is connected to the support platform via a bearing, and the pinion gear is connected to the support platform via a bearing.

[0008] Preferably, a circulation fan is fixedly mounted on the top of the main gear.

[0009] Preferably, the parallel reaction tubes are filled with test tubes or reaction tubes that require reaction.

[0010] Preferably, the top of the shell is provided with discharge ports corresponding to the plurality of parallel reaction tubes.

[0011] Preferably, a power interface and a control panel are provided on the housing.

[0012] (III) Beneficial effects: Compared with the prior art, the present invention provides a parallel experimental device for photochemical synthesis reactions under low temperature conditions, which has the following beneficial effects:

[0013] 1. This parallel experimental equipment for photochemical synthesis reactions in a low-temperature environment uses a parallel reaction tube structure in conjunction with a light unit structure. During the reaction process, since each parallel reaction tube is equipped with a light unit, the lighting conditions and reaction progress in each reaction tube can be independently controlled. Only some reaction tubes can be started for reaction without affecting other unstarted reaction tubes. This design improves the flexibility of the equipment and experimental efficiency.

[0014] 2. This is a parallel experimental equipment for photochemical synthesis reactions in a low-temperature environment. Through the use of a main gear structure and a pinion structure, when the pinion rotates during the reaction, the magnetic stirring unit above it will rotate accordingly. When the magnetic stirring unit rotates, it will drive the magnetic stirring bar in the parallel reaction tube to rotate through the action of magnetism. This non-contact stirring method can effectively mix the reactants, avoid reactant contamination and improve reaction efficiency.

[0015] 3. This is a parallel experimental equipment for photochemical synthesis reactions in a low-temperature environment. Through the coordinated use of a circulation fan structure, a main gear structure, and a cooling pipe structure, during the reaction, the rotation of the main gear will also drive the circulation fan to rotate together. The circulation fan will make the air circulation between several parallel reaction tubes faster, thereby making the temperature between the parallel reaction tubes uniform. In addition, this structure is an auxiliary structure installed on the main gear, which simplifies the installation structure of the circulation fan and saves the volume within the equipment. At the same time, through the use of cooling pipes and heat conduction tubes, multiple parallel reaction tubes can react at the same temperature, thereby improving the accuracy and repeatability of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the parallel experimental equipment for photochemical synthesis reaction in a low-temperature environment in the present invention;

[0017] Figure 2 This is a front view of the structure of the parallel experimental equipment for photochemical synthesis reaction in a low temperature environment in the present invention;

[0018] Figure 3 This is a top view of the structure of the parallel experimental equipment for photochemical synthesis reaction in a low temperature environment in the present invention;

[0019] Figure 4 for Figure 3 AA-direction cross-sectional view;

[0020] Figure 5 It is a three-dimensional schematic diagram of parallel reaction tubes;

[0021] Figure 6 Schematic diagram of the meshing of main gear and pinion gear;

[0022] Figure 7 A three-dimensional schematic diagram of the cooling pipe.

[0023] In the figure: 1. Shell; 12. Discharge port; 2. Support platform; 3. Parallel reaction tubes; 31. Light unit; 4. Main gear; 5. Pinion; 51. Magnetic stirring unit; 6. Compressor; 61. Cooling tube; 7. Motor; 8. Circulation fan. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 A parallel experimental device for photochemical synthesis reactions in a low-temperature environment includes a housing 1 and a support platform 2. The support platform 2 is fixed within the housing 1. Several parallel reaction tubes 3 are arranged above the support platform 2. This structure allows multiple experiments to be conducted simultaneously, thereby improving experimental efficiency and throughput. Each reaction tube can independently perform reactions, allowing the device to conduct parallel experiments, improving experimental repeatability and data reliability. A lighting unit 31 is installed within the parallel reaction tubes 3. Photochemical reactions require a light source to excite the reactants. Therefore, installing a lighting unit 31 in each reaction tube ensures that the light source directly and evenly illuminates the reactants. In addition, the independent lighting unit 31 design allows for individual control of the lighting conditions for each reaction tube, making experiments more flexible. A main gear 4 and several pinion gears 5 are rotatably mounted on the support platform 2. The main gear 4 is located at the center of the support platform 2. The gear system is used to transmit the rotational motion of the motor 7 to the multiple pinion gears 5, thereby achieving synchronous rotation of multiple magnetic stirring units 51. The central location of the main gear 4 can evenly distribute power and simplify the transmission structure. Pinions 5 mesh in opposite directions along the circumference of the main gear 4. Parallel reaction tubes 3 are positioned above each pinion 5. A magnetic stirring unit 51 is mounted on each pinion 5. The pinions 5 rotate the magnetic stirring unit 51, which then stirs the reaction tubes through magnetic force. This design provides a contactless stirring method, avoiding contamination while ensuring thorough mixing of the reactants and improving reaction efficiency. A cylindrical heat-conducting tube is also fixed within the housing 1 to help maintain temperature uniformity within the device. Combined with a cooling system, this system can quickly adjust and stabilize the experimental environment temperature to suit various experimental requirements. A cooling tube 61 is spirally wound around the heat-conducting tube, with a compressor 6 connected to its base. The cooling tube 61 and compressor 6 effectively control and reduce the system temperature. The spiral winding design of the cooling tube 61 increases the heat exchange area and improves cooling efficiency, ensuring that each reaction tube is at the appropriate temperature for reaction, thereby ensuring experimental accuracy and repeatability.

[0026] See also Figure 2 Figure 3 、 Figure 4 、 Figure 6 A motor 7 is mounted at the bottom of the main gear 4 and fixed to the support platform 2. The motor 7 rotates the main gear 4, driving the pinion 5 and the stirring unit. Securing the motor 7 to the support platform 2 increases the stability of the device and prevents vibrations from the motor 7 affecting other parts of the device. This layout also provides a compact and space-saving design. The main gear 4 is connected to the support platform 2 via bearings, and the pinion 5 is connected to the support platform 2 via bearings. The use of bearings reduces friction during gear rotation, improving transmission efficiency and the device's lifespan. They ensure smooth and precise gear rotation while also reducing maintenance requirements. A circulating fan 8 is also fixed to the top of the main gear 4. The circulating fan 8 is designed to facilitate air circulation between the reaction tubes and ensure temperature uniformity. Mounting the circulating fan 8 on top of the main gear 4 simplifies the structural design, using the rotation of the gears to drive the fan blades, improving the compactness and efficiency of the device. The parallel reaction tubes 3 contain the test tubes or reaction tubes required for the reaction. This design allows users to flexibly select and replace reactant containers according to experimental needs. This provides convenient experiments and accommodates various types and scales of photochemical reactions. The top of the housing 1 is provided with a discharge port 12 corresponding to several parallel reaction tubes 3. The design of the discharge port 12 facilitates the addition and removal of experimental substances while reducing interference with other reaction tubes during operation. It provides a convenient interface for quick and efficient experimental processing. The housing 1 is provided with a power interface and a control panel. The power interface provides the necessary power support for the equipment, while the control panel is the core interface for operating and monitoring the equipment. Users can set and adjust experimental conditions through the control panel to ensure the accuracy and controllability of the experiment. This design simplifies the operation of the equipment and improves safety.

[0027] Working Principle: When using this device, the reactants to be reacted are placed in the parallel reaction tubes 3. Then, the lighting unit 31 is activated to illuminate the parallel reaction tubes 3. Simultaneously, the motor 7 drives the main gear 4 and the pinion 5 to rotate. As the pinion 5 rotates, the magnetic stirring unit 51 above it rotates accordingly. As the magnetic stirring unit 51 rotates, it magnetically drives the magnetic stirrers in the parallel reaction tubes 3 to rotate. This contactless stirring method effectively mixes the reactants, avoids contamination, and improves reaction efficiency. During the reaction process, the compressor 6 fills the cooling tube 61 with cooling liquid. The cooling liquid changes the temperature of the heat transfer barrel, ensuring that the parallel reaction tubes 3 are all at the appropriate temperature for reaction. Because each parallel reaction tube 3 is equipped with a lighting unit 31, the device can independently control the lighting conditions and reaction progress within each reaction tube, allowing only some reaction tubes to be activated for reaction without affecting other unactivated reaction tubes. This design improves the device's flexibility and experimental efficiency.

[0028] In addition, during the rotation of the main gear 4, the circulation fan 8 is also driven to rotate together. The circulation fan 8 will make the air circulation between the parallel reaction tubes 3 faster, so that the temperature between the parallel reaction tubes 3 is uniform. In addition, this structure is an auxiliary structure installed on the main gear 4, which simplifies the installation structure of the circulation fan 8 and saves the volume in the equipment. At the same time, through the use of the cooling tube 61 and the heat-conducting tube, multiple parallel reaction tubes 3 can react at the same temperature, thereby improving the accuracy and repeatability of the experiment.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A parallel experimental device for photochemical synthesis reaction in a low temperature environment, comprising a housing (1) and a support platform (2), wherein the support platform (2) is fixed in the housing (1), and a plurality of parallel reaction tubes (3) are arranged above the support platform (2), characterized in that: A lighting unit (31) is provided in the parallel reaction tube (3); a main gear (4) and a plurality of pinions (5) are rotatably mounted on the support platform (2); the main gear (4) is provided at the center of the support platform (2); the pinions (5) mesh in opposite directions along the circumference of the main gear (4); a parallel reaction tube (3) is provided above each pinion (5); a magnetic stirring unit (51) is provided on the pinion (5); a cylindrical heat-conducting tube is also fixedly provided in the shell (1); a cooling tube (61) is spirally wound on the heat-conducting tube; and a compressor (6) is connected to the bottom of the cooling tube (61).

2. The parallel experimental device for photochemical synthesis reaction in a low temperature environment according to claim 1, characterized in that: A motor (7) is provided at the bottom of the main gear (4), and the motor (7) is fixedly mounted on the support platform (2).

3. The parallel experimental device for photochemical synthesis reaction in a low temperature environment according to claim 1, characterized in that: The main gear (4) and the support platform (2) are connected via a bearing, and the pinion gear (5) and the support platform (2) are connected via a bearing.

4. The parallel experimental device for photochemical synthesis reaction in a low temperature environment according to claim 1, characterized in that: A circulation fan (8) is also fixedly mounted on the top of the main gear (4).

5. The parallel experimental device for photochemical synthesis reaction in a low temperature environment according to claim 1, characterized in that: The parallel reaction tube (3) is filled with a test tube or reaction tube that needs to be reacted.

6. The parallel experimental device for photochemical synthesis reaction in a low temperature environment according to claim 1, characterized in that: The top of the shell (1) is provided with a discharge port (12) corresponding to the plurality of parallel reaction tubes (3).

7. The parallel experimental device for photochemical synthesis reaction in a low temperature environment according to claim 1, characterized in that: The housing (1) is provided with a power interface and a control panel.

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