Automatic control chemical experiment reaction device

Abstract

The invention discloses an automatic control chemical experiment reaction device which comprises a back plate, a clamping assembly, a stirring assembly and an injection thruster, the clamping assembly is fixedly connected to the back plate, the stirring assembly is placed on the front side of the back plate, the position of the stirring assembly is matched with that of the clamping assembly, and the injection thruster is placed on one side of the back plate. A driver and a controller which are fixedly connected with the back plate are arranged on the back plate, the controller is in electric signal connection with the driver, and the driver is in electric signal connection with the clamping assembly, the stirring assembly and the injection propeller; according to the device, by adopting a modular motor driving system, a plurality of assemblies with different functions are coordinated and dispatched, so that the steps of automatic clamping, heating and stirring, reagent injection and the like of a reaction container are sequentially completed by each assembly according to a preset program, the defects existing in manual operation in the whole process are greatly reduced, and the production efficiency is improved. A large amount of time can be saved, and meanwhile the implementation efficiency and repeatability are indirectly improved.

Description

Technical Field

[0001] This invention relates to the field of experimental reaction technology, and in particular to an automated control device for chemical experimental reactions. Background Technology

[0002] In modern chemical experimental research, experimental reaction processes typically involve multiple consecutive and interrelated operational steps, such as heating and isothermal control of the reaction system, uniform stirring of the solution, quantitative addition of different reagents, precise control of reaction time, and separation or termination of the reaction of products. To ensure the reliability and reproducibility of reaction results, researchers must finely control each step. Especially in experiments such as organic synthesis, catalytic reactions, and inorganic material preparation, any slight operational deviation can lead to significant differences in product selectivity, yield, or structural characteristics. Under current experimental conditions, these operations are mainly performed manually.

[0003] For this reason, existing experimental reaction devices have the following drawbacks: First, human operation has a large margin of error, which affects the repeatability of experiments. Second, traditional experimental procedures require the experimenter to stay in front of the fume hood for a long time to observe the changes in the system in real time and perform various operations. Especially for experiments involving multi-step reactions, intermittent feeding or temperature control, it often takes several hours or even longer. Third, when conducting some dangerous experiments, manual operation poses a high safety risk.

[0004] In view of this, there is an urgent need for an automated control device for chemical experimental reactions to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an automated control device for chemical experimental reactions that solves the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic control chemical experimental reaction device, comprising:

[0007] The back plate, clamping assembly, stirring assembly, and injection pusher are provided. The clamping assembly is fixedly connected to the back plate. The stirring assembly is placed on the front side of the back plate, and the position of the stirring assembly matches that of the clamping assembly. The injection pusher is placed on one side of the back plate. The back plate is provided with a driver and a controller fixedly connected to it. The controller and the driver are electrically connected. The driver is electrically connected to the clamping assembly, the stirring assembly, and the injection pusher, respectively.

[0008] Preferably, the clamping assembly includes a motor, a ball screw, an upper fixed block, a lower fixed block, a threaded slider, and a mechanical gripper. The upper fixed block is fixedly connected to the upper end of the front sidewall of the back plate, and the lower fixed block is fixedly connected to the lower end of the front sidewall of the back plate. The lower end of the ball screw passes through the threaded slider and is rotatably connected to the lower fixed block. The upper end of the ball screw passes through the upper fixed block and is connected to the motor. The ball screw and the upper fixed block are in clearance fit. The motor is fixedly connected to the back plate and is electrically connected to the driver. The threaded slider is threadedly connected to the ball screw. The mechanical gripper is fixedly connected to the threaded slider and is electrically connected to the driver.

[0009] Preferably, the stirring assembly includes a magnetic stirrer and a magnetic rotor. The magnetic stirrer is located on the front side of the back plate and is electrically connected to the driver. The magnetic rotor is matched with the magnetic stirrer.

[0010] Preferably, the magnetic stirrer is a thermostatic magnetic stirrer.

[0011] Preferably, the position of the magnetic stirrer matches the position of the mechanical gripper.

[0012] Preferably, the surface of the magnetic stirrer is provided with a stepped annular groove.

[0013] Preferably, the back plate is provided with at least one hose clamp.

[0014] Preferably, the controller is a programmable logic controller.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This device uses a modular motor drive system to coordinate and schedule multiple components with different functions. This allows each component to complete the steps of automatic clamping of the reaction vessel, heating and stirring, and reagent injection in sequence according to a preset program. The whole process greatly reduces the drawbacks of manual operation, which not only saves a lot of time, but also achieves precise control of temperature, stirring rate and feeding amount through components with different functions, indirectly improving efficiency and repeatability.

[0017] 2. This device integrates components with different functions in a modular way, which allows the device to be flexibly combined and used according to needs. It is suitable for various experimental scenarios such as organic synthesis, inorganic reaction, catalytic testing and material preparation, thus indirectly expanding the applicability of this device.

[0018] 3. This device integrates various components with different functions to form an automated system, which significantly reduces manpower input, frees experimental personnel from repetitive labor, indirectly reduces reliance on and cost of manual labor, and indirectly reduces the risk of accidents during manual operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an automated chemical experimental reaction apparatus.

[0020] Figure 2 This is a schematic diagram of the experimental steps of an automated chemical experimental reaction apparatus.

[0021] In the diagram: 1. Backplate; 10. Driver; 11. Controller; 12. Hose clamp; 2. Clamping assembly; 20. Motor; 21. Ball screw; 22. Upper fixing block; 23. Lower fixing block; 24. Threaded slider; 25. Mechanical claw; 3. Stirring assembly; 31. Magnetic stirrer; 310. Stepped annular groove; 32. Magnetic rotor; 4. Injection propeller. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Please see the appendix Figure 1-2 An automated chemical experimental reaction control device, comprising:

[0024] The back plate 1, clamping assembly 2, stirring assembly 3, and injection pusher 4 are provided. The clamping assembly 2 is fixedly connected to the back plate 1. The stirring assembly 3 is placed on the front side of the back plate 1, and the position of the stirring assembly 3 matches that of the clamping assembly 2. The injection pusher 4 is placed on one side of the back plate 1. The back plate 1 is provided with a driver 10 and a controller 11 fixedly connected thereto. The controller 11 is electrically connected to the driver 10. The driver 10 is electrically connected to the clamping assembly 2, the stirring assembly 3, and the injection pusher 4, respectively.

[0025] In practical application, first start the test equipment and weigh the required reagents. Then, place the reaction container on the magnetic stirrer 31 in the stirring assembly 3, and then fix the reaction container with the clamping assembly 2. Then, start the stirring function of the magnetic stirrer 31 to complete the mixing of the solution in the reaction container. After the solution is mixed, turn off the stirring function of the magnetic stirrer 31 and start the heating function of the magnetic stirrer 31 to heat the solution. After the solution reaches the predetermined temperature, inject the prepared reagent into the reaction container through the injection pusher 4. After the whole process is completed, the power can be turned off through the driver 10.

[0026] The above steps are the detailed steps of the entire reaction. In existing experiments, the above steps are mostly operated manually. However, in this invention, the magnetic stirrer 31, the injection propeller 4 and the clamping assembly 2 are all controlled by the driver 10. The specific control timing can be programmed in advance in the controller 11. It should be noted that the controller 11 itself is a programming carrier, and the specific operation still requires an external operating device, usually connected to a computer to complete the programming of the controller 11.

[0027] Specifically, the clamping assembly 2 includes a motor 20, a ball screw 21, an upper fixing block 22, a lower fixing block 23, a threaded slider 24, and a mechanical claw 25. The upper fixing block 22 is fixedly connected to the upper end of the front sidewall of the back plate 1, and the lower fixing block 23 is fixedly connected to the lower end of the front sidewall of the back plate 1. The lower end of the ball screw 21 passes through the threaded slider 24 and is rotatably connected to the lower fixing block 23. The upper end of the ball screw 21 passes through the upper fixing block 22 and is connected to the motor 20. The ball screw 21 and the upper fixing block 23 are in clearance fit. The motor 20 is fixedly connected to the back plate 1 and is electrically connected to the driver 10. The threaded slider 24 is threadedly connected to the ball screw 21. The mechanical claw 25 is fixedly connected to the threaded slider 24 and is electrically connected to the driver 10.

[0028] The clamping assembly 2, as a crucial component for securing the reaction vessel, primarily needs to fulfill two functions: firstly, to clamp the reaction vessel (in this invention, a mechanical gripper 25 is used); and secondly, the mechanical gripper 25 needs to have vertical displacement capability to adjust its gripping position and facilitate the removal of the reaction vessel after the experiment. This invention employs a threaded connection between a ball screw 21 and a threaded slider 24 to achieve these objectives, as detailed below:

[0029] When the position of the mechanical gripper 25 needs to be adjusted, the driver 10 first starts the motor 20 through an electrical signal (mainly RS485 communication protocol), which drives the ball screw 21 to rotate. Since the ball screw 21 is threadedly connected to the threaded slider 24 and the threaded slider 24 is close to the back plate 1, the threaded slider 24 cannot rotate with the ball screw 21. Under the action of the two phases, the threaded slider 24 will be displaced in the vertical direction with the rotation of the ball screw 21. After the threaded slider 24 slides to the appropriate position, the driver 10 controls the mechanical gripper 25 to complete the clamping of the reaction vessel through an electrical signal. At the same time, the upper fixing block 22 and the lower fixing block 23 set on the back plate 1 can not only limit the position of the ball screw 21, but also the lower fixing block 23 can serve as a support for the back plate 1.

[0030] It should be noted that, in principle, when the threaded slider 24 is close to the back plate 1, the rotation of the ball screw 21 can only drive the threaded slider 24 to move vertically. In actual applications, if there is a large gap between the threaded slider 24 and the back plate 1, the threaded slider 24 will rotate slightly at the beginning of the displacement. If this rotation does not affect the experimental results, it can be ignored. If this rotation affects the experimental results, a sliding post fixedly connected to the threaded slider 24 can be set on the side of the threaded slider 24 close to the back plate 1, and a groove matching the sliding post can be set on the back plate 1 to improve the situation. Whether or not improvement is needed depends on the experimental accuracy.

[0031] Specifically, the stirring assembly 3 includes a magnetic stirrer 31 and a magnetic rotor 32. The magnetic stirrer 31 is located on the front side of the back plate 1 and is electrically connected to the driver 10. The magnetic rotor 32 is matched with the magnetic stirrer 31.

[0032] Considering that the main purpose of this invention is to improve the experimental system and achieve automation, the stirring component 3 adopts a magnetic stirrer 31 and a magnetic rotor 32, which are currently highly automated, to achieve the purpose of stirring.

[0033] Specifically, the magnetic stirrer 31 is a thermostatic magnetic stirrer; considering that after the solution in the reaction vessel is stirred evenly, some of the solution needs to be heated before the reagent is injected, the magnetic stirrer 31 adopts a thermostatic magnetic stirrer with heating function.

[0034] Specifically, the position of the magnetic stirrer 31 matches the position of the mechanical claw 25.

[0035] Specifically, the surface of the magnetic stirrer 31 is provided with a stepped annular groove 310;

[0036] Considering that different reaction vessels are used in different experiments, and that the gripping position of the mechanical claw 25 is located in the middle or upper part of the reaction vessel in most experiments, in order to avoid the bottom of the reaction vessel shaking due to excessive stirring force of the magnetic rotor 32, a stepped annular groove 310 suitable for most reaction vessels is set on the magnetic stirrer 31. The basic position of the bottom of the reaction vessel is fixed by the stepped grooves of different diameters on the stepped annular groove 310.

[0037] Specifically, the back plate 1 is provided with at least one hose clamp 12. Considering that the injection pusher 4 needs to be used with an injection hose for injection, directly putting one end of the hose into the reaction container will inevitably result in the hose touching the bottom, which may affect the injection rate of the injection pusher 4. At the same time, in some experiments, the reaction solution needs to be heated to a high temperature. In order to avoid adverse reactions caused by the high temperature after the hose touches the bottom, which would affect the experimental results, at least one hose clamp 12 is provided on the back plate 1. The specific position of the hose in the reaction container can be controlled by clamping the hose.

[0038] Specifically, the controller 11 is a programmable logic controller (PLC). Since programming is completed in the controller 11 in this invention, the operation of each component can be indirectly controlled through the driver 10. Therefore, the controller 11 needs to be a PLC.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic control chemical experimental reaction apparatus, characterized in that... include: The back plate (1), clamping assembly (2), stirring assembly (3) and injection pusher (4) are fixedly connected to the back plate (1). The stirring assembly (3) is placed on the front side of the back plate (1) and the position of the stirring assembly (3) matches that of the clamping assembly (2). The injection pusher (4) is placed on one side of the back plate (1). The back plate (1) is provided with a driver (10) and a controller (11) fixedly connected to it. The controller (11) is electrically connected to the driver (10). The driver (10) is electrically connected to the clamping assembly (2), the stirring assembly (3) and the injection pusher (4) respectively.

2. The automatic control chemical experimental reaction apparatus according to claim 1, characterized in that: The clamping assembly (2) includes a motor (20), a ball screw (21), an upper fixing block (22), a lower fixing block (23), a threaded slider (24), and a mechanical gripper (25). The upper fixing block (22) is fixedly connected to the upper end of the front sidewall of the back plate (1), and the lower fixing block (23) is fixedly connected to the lower end of the front sidewall of the back plate (1). The lower end of the ball screw (21) passes through the threaded slider (24) and is rotatably connected to the lower fixing block (23). The upper end of the ball screw (21) passes through... The upper fixing block (22) is connected to the motor (20), and the ball screw (21) is clearance-fitted with the upper fixing block (23). The motor (20) is fixedly connected to the back plate (1), and the motor (20) is electrically connected to the driver (10). The threaded slider (24) is threadedly connected to the ball screw (21). The mechanical claw (25) is fixedly connected to the threaded slider (24), and the mechanical claw (25) is electrically connected to the driver (10).

3. The automatic control chemical experimental reaction apparatus according to claim 2, characterized in that: The stirring assembly (3) includes a magnetic stirrer (31) and a magnetic rotor (32). The magnetic stirrer (31) is located on the front side of the back plate (1) and is electrically connected to the driver (10). The magnetic rotor (32) is matched with the magnetic stirrer (31).

4. An automatically controlled chemical experimental reaction apparatus according to claim 3, characterized in that: The magnetic stirrer (31) is a thermostatic magnetic stirrer.

5. An automatically controlled chemical experimental reaction apparatus according to claim 3, characterized in that: The position of the magnetic stirrer (31) matches the position of the mechanical claw (25).

6. An automatically controlled chemical experimental reaction apparatus according to claim 3, characterized in that: The magnetic stirrer (31) has a stepped annular groove (310) on its surface.

7. An automatically controlled chemical experimental reaction apparatus according to claim 2, characterized in that: At least one hose clamp (12) is provided on the back plate (1).

8. An automatic control chemical experimental reaction apparatus according to claim 1, characterized in that: The controller (11) is a programmable logic controller.

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