Circulating emptying system of reaction kettle

Abstract

The utility model discloses a circulating emptying system of a reaction kettle, and relates to the technical field of reaction kettles. The circulating emptying system for the reaction kettle comprises the reaction kettle, a driving part and external equipment which are communicated in sequence, the reaction kettle, the driving part and the external equipment are respectively communicated through a solvent circulating pipeline and a solvent emptying pipeline; wherein the circulating emptying system has a solvent circulating mode and a solvent emptying mode; when the circulating emptying system is switched to the solvent circulating mode, the preset first valve group in the solvent circulating pipeline is opened or closed according to a preset sequence, and the reaction kettle and the external equipment are driven by the driving part to circulate the solvent according to the preset solvent circulating pipeline. According to the reaction kettle system, the problems that manual intervention is often needed when a traditional reaction kettle system carries out operations such as discharging, circulating, emptying and equipment cleaning, the operation complexity and the working intensity are increased, process deviation is easily caused by human factors, and the product quality is further influenced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reactors, in particular to a reactor circulation emptying system. Background Art

[0002] In the chemical reaction process, reactors, as core equipment, are widely used in the process operations of various chemical reactions.

[0003] However, traditional reactor systems often require manual intervention for operations such as discharging, circulation, emptying, and equipment cleaning. This not only increases operational complexity and workload, but also easily leads to process deviations due to human factors, thereby affecting product quality. Currently, no effective solution has been proposed to address these issues. Utility Model Content

[0004] The purpose of the utility model is to provide a reactor circulation emptying system to at least solve one of the problems existing in the above-mentioned prior art.

[0005] Technical solution: A reactor circulation and emptying system, comprising: a reactor, a driving component and an external device connected in sequence; the reactor, the driving component and the external device are connected through a solvent circulation pipeline and a solvent emptying pipeline respectively; wherein, the circulation and emptying system has a solvent circulation mode and a solvent emptying mode; when the circulation and emptying system switches to the solvent circulation mode, the preset first valve group in the solvent circulation pipeline is opened or closed according to a preset sequence, and the driving component drives the reactor and the external device to circulate the solvent according to the preset solvent circulation pipeline; when the circulation and emptying system switches to the solvent emptying mode, the preset second valve group in the solvent emptying pipeline is opened or closed according to a preset sequence, and the driving component drives at least the reactor and / or the external device to empty the solvent according to the solvent emptying pipeline.

[0006] Preferably, the reactor comprises a reactor body, an outlet is provided at the bottom of the reactor body, a flange is provided at the outlet, and an inlet is provided on one side of the reactor body close to the top.

[0007] Preferably, the solvent circulation pipeline includes: a first pipeline connected to the bottom of the reactor, the end of the first pipeline is connected to the input end of the driving component, the output end of the driving component is connected to the input end of the external device through a second pipeline, and the output end of the external device is connected to the inlet of the reactor through a third pipeline.

[0008] Preferably, a first switch valve is provided on the first pipeline, and a second switch valve is provided on the second pipeline.

[0009] Preferably, the solvent exhaust pipeline includes: a fourth pipeline, the input end of the driving component is connected to the input end of the external device through the fourth pipeline, and the second pipeline is provided with a bypass pipeline;

[0010] The fourth pipeline intersects with the second pipeline at a first node, and the first node is located at the outlet of the second switch valve; the fourth pipeline intersects with the first pipeline at a second node, and the second node is located at the outlet of the first switch valve.

[0011] Preferably, a third switch valve is provided on the fourth pipeline, and a fourth switch valve is provided on the bypass pipeline;

[0012] When the first on-off valve and the second on-off valve are opened, and the third on-off valve and the fourth on-off valve are closed, the reaction kettle and the external device circulate the solvent through the driving component.

[0013] Preferably, when the first on-off valve, the third on-off valve and the fourth on-off valve are opened and the second on-off valve is closed, the reaction kettle and the external device are emptied of the solvent through the driving component;

[0014] When the first on-off valve and the fourth on-off valve are opened, and the second on-off valve and the third on-off valve are closed, the reaction kettle is emptied of the solvent through the driving component;

[0015] When the third on-off valve and the fourth on-off valve are opened and the first on-off valve and the second on-off valve are closed, the external device exhausts the solvent through the driving component.

[0016] Preferably, the first switch valve, the second switch valve, the third switch valve and the fourth switch valve are three-way valves.

[0017] Preferably, the device further comprises: a main controller, the main controller being electrically connected to the driving component, the solvent circulation pipeline and the solvent exhaust pipeline respectively;

[0018] The main controller issues control instructions according to the received operation instructions to respectively control the actions of the switch valves in the solvent circulation pipeline and the solvent exhaust pipeline to switch between multiple modes.

[0019] Preferably, the driving component is a diaphragm pump.

[0020] Beneficial effect: In the embodiment of the present application, a preset circulation emptying pipeline is adopted, and the circulation emptying system has a solvent circulation mode and a solvent emptying mode; when the circulation emptying system switches to the solvent circulation mode, the preset first valve group in the solvent circulation pipeline is opened or closed according to a preset sequence, and the driving component drives the reactor and the external equipment to circulate the solvent according to the preset solvent circulation pipeline; when the circulation emptying system switches to the solvent emptying mode, the preset second valve group in the solvent emptying pipeline is opened or closed according to a preset sequence, and the driving component drives at least the reactor and / or the external equipment to empty the solvent according to the solvent emptying pipeline, thereby achieving the purpose of circulating and emptying the solvent, thereby realizing the technical effect of multiple modes being switchable, improving work efficiency and process accuracy, and thus solving the problem that traditional reactor systems often require manual intervention during operations such as discharging, circulation, emptying and equipment cleaning, which not only increases the complexity and work intensity of the operation, but also easily causes process deviations due to human factors, thereby affecting product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the reactor circulation emptying system of the utility model; and

[0022] Figure 2 It is a structural diagram of another reactor circulation emptying system of the present utility model.

[0023] The accompanying drawings are:

[0024] 10. Reactor; 101. Reactor body; 102. Flange; 103. Inlet;

[0025] 20. Driving components;

[0026] 30. External devices;

[0027] 40. Solvent circulation pipeline; 401. First pipeline; 402. Second pipeline; 403. Third pipeline; 404. First on-off valve; 405. Second on-off valve;

[0028] 50, solvent exhaust pipeline; 501, fourth pipeline; 502, bypass pipeline; 503, third switch valve; 504, fourth switch valve;

[0029] a. First node;

[0030] b. The second node. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] like Figure 1-2 As shown, the present application relates to a reactor circulation and emptying system. The reactor circulation and emptying system comprises: a reactor 10, a drive component 20, and an external device 30, which are connected in sequence. The reactor 10 is the core part of the system and is used to perform a chemical reaction. The materials in the reactor 10 undergo a chemical reaction under specific temperature, pressure, and stirring conditions to produce a target product or intermediate.

[0036] The drive unit 20 is connected between the reactor 10 and the external device 30. The drive unit 20 includes, but is not limited to, a pump or compressor, which controls the flow of materials, regulates pressure, or transmits power. For example, a pump can transport materials from the reactor 10 to the external device 30 or circulate and stir materials within the reactor 10. A compressor can be used to pressurize the system.

[0037] External equipment 30 is connected to reactor 10 via drive unit 20 and is used to assist and support the reaction process. For example, this equipment involves a solution flowing through various chemical reaction methods, such as optical, electrical, acoustic, and magnetic. External equipment 30 may include, but is not limited to, coils, condensers, filters, heat exchangers, or storage tanks, performing functions such as cooling, heating, separation, storage, or filtration to ensure the stability and efficiency of the reaction process.

[0038] Preferably, the external device 30 is a coil. The coil is typically installed inside or outside the reactor 10 to control the temperature within the reactor 10. The temperature within the reactor 10 is adjusted by introducing a cooling or heating medium to ensure that the reaction proceeds at the optimal temperature. Temperature control is crucial for many chemical reactions, as excessively high or low temperatures can affect the reaction rate and the quality of the final product. Precise temperature control of the coil allows the reactor 10 to be maintained within a set temperature range, thereby improving reaction efficiency and product quality consistency.

[0039] The reactor 10, the driving component 20 and the external device 30 are connected via a solvent circulation pipeline 40 and a solvent emptying pipeline 50 respectively; good pipeline connection effect can be achieved, thereby ensuring good solvent circulation and emptying effects, and further achieving multiple functional effects.

[0040] Wherein, the circulation and emptying system has a solvent circulation mode and a solvent emptying mode;

[0041] When the circulating emptying system switches to the solvent circulation mode, the preset first valve group in the solvent circulation pipeline 40 is opened or closed according to a preset sequence, and the driving component 20 drives the reactor 10 and the external device 30 to circulate the solvent in the solvent circulation pipeline 40 according to the preset sequence;

[0042] When the circulating emptying system switches to the solvent emptying mode, the preset second valve group in the solvent emptying pipeline 50 is opened or closed according to a preset sequence, and the driving component 20 drives at least the reactor 10 and / or the external device 30 to empty the solvent according to the solvent emptying pipeline 50.

[0043] By presetting the solvent circulation mode and the solvent emptying mode, the reactor 10 and the external device 30 can achieve good solvent circulation and emptying effects, thereby achieving the effects of multiple working modes and meeting diverse usage requirements.

[0044] When the solvent circulation mode is switched to, the preset first valve group in the solvent circulation pipeline 40 is opened or closed according to a preset sequence, and the driving component 20 drives the reactor 10 and the external device 30 to circulate the solvent in the solvent circulation pipeline 40 according to the preset sequence; wherein the first valve group comprises a plurality of switch valves, and by controlling the opening or closing of the corresponding switch valves, a pipeline circulation effect can be achieved, thereby achieving a good solvent circulation effect for the reactor 10, the driving component 20 and the external device 30;

[0045] When the solvent drain mode is switched to, the preset second valve group in the solvent drain line 50 is opened or closed in a preset sequence, and the driving component 20 drives at least the reactor 10 and / or the external device 30 to drain the solvent through the solvent drain line 50. The second valve group comprises a plurality of on-off valves, and by controlling the opening or closing of the corresponding on-off valves, the reactor 10 and the external device 30 can be placed in different solvent drain states, thereby achieving multiple functional effects.

[0046] This application is used to precisely control the discharge, circulation, and emptying of the reactor 10, as well as the cleaning of the equipment, and is applicable to processes requiring various chemical reactions. The system uses an intelligent control system with valve opening and closing logic to implement a circulation system between the reactor 10 and the external device 30, empty the solvent between the reactor 10 and the external device 30, and empty the solvent from the reactor 10 to the external device 30, thereby achieving automated and precise process control.

[0047] From the above description, it can be seen that this application achieves the following technical effects:

[0048] In the embodiment of the present application, a preset circulation and emptying pipeline is adopted, and the circulation and emptying system has a solvent circulation mode and a solvent emptying mode; when the circulation and emptying system is switched to the solvent circulation mode, the preset first valve group in the solvent circulation pipeline 40 is opened or closed according to a preset sequence, and the driving component 20 drives the reactor 10 and the external device 30 to circulate the solvent according to the preset solvent circulation pipeline 40; when the circulation and emptying system is switched to the solvent emptying mode, the preset second valve group in the solvent emptying pipeline 50 is opened or closed according to a preset sequence, and the driving component 20 drives at least the reactor 10 and / or the external device 30 to empty the solvent according to the solvent emptying pipeline 50, thereby achieving the purpose of circulating and emptying the solvent, thereby achieving the technical effect of multiple modes being switchable, improving work efficiency and process accuracy, and thus solving the technical problem that the traditional reactor 10 system often requires manual intervention during operations such as discharging, circulation, emptying and equipment cleaning, which not only increases the complexity and work intensity of the operation, but also easily causes process deviations due to human factors, thereby affecting product quality.

[0049] Furthermore, the reactor 10 includes a reactor body 101, an outlet at the bottom of the reactor body 101, a flange 102 at the outlet, and an inlet 103 near the top of the reactor body 101. It is understood that a good assembly effect can be achieved, and at the same time, a good material inlet and outlet effect can be achieved.

[0050] Furthermore, the solvent circulation line 40 includes a first line 401 connected to the bottom of the reactor 10. The end of the first line 401 is connected to the input of the drive unit 20. The output of the drive unit 20 is connected to the input of the external device 30 via a second line 402. The output of the external device 30 is connected to the inlet 103 of the reactor 10 via a third line 403. It will be appreciated that the connection between the reactor 10, the drive unit 20, and the external device 30 via the first line 401 and the second line 402 ensures a good circulation path effect.

[0051] Furthermore, the first pipeline 401 is provided with a first on-off valve 404, and the second pipeline 402 is provided with a second on-off valve 405. It is understood that by providing the first on-off valve 404 and the second on-off valve 405, respectively, it is possible to achieve a good control effect on the opening or closing of the pipeline, thereby enabling the operation of the desired pipeline to be specified.

[0052] Furthermore, the solvent exhaust pipeline 50 includes: a fourth pipeline 501, the input end of the driving component 20 is connected to the input end of the external device 30 through the fourth pipeline 501, and the second pipeline 402 is provided with a bypass pipeline 502;

[0053] The fourth pipeline 501 intersects with the second pipeline 402 at a first node 60, which is located at the outlet of the second on-off valve 405. The fourth pipeline 501 intersects with the first pipeline 401 at a second node 70, which is located at the outlet of the first on-off valve 404. It can be understood that the fourth pipeline 501 and the bypass pipeline 502 can achieve the effect of connecting the reactor 10, the drive component 20, and the external device 30, thereby providing a pipeline foundation for solvent exhaustion.

[0054] Furthermore, a third switch valve 503 is provided on the fourth pipeline 501, and a fourth switch valve 504 is provided on the bypass pipeline 502;

[0055] When the first on-off valve 404 and the second on-off valve 405 are open, and the third on-off valve 503 and the fourth on-off valve 504 are closed, the reaction kettle 10 and the external device 30 circulate the solvent via the driving component 20. It is understood that by separately providing the third on-off valve 503 and the fourth on-off valve 504, a good coordination effect with the first on-off valve 404 and the second on-off valve 405 can be achieved, thereby achieving a good control effect on the opening or closing of the pipeline, and further enabling the operation of the desired pipeline to be specified.

[0056] Furthermore, when the first switch valve 404, the third switch valve 503 and the fourth switch valve 504 are opened and the second switch valve 405 is closed, the reaction kettle 10 and the external device 30 are emptied of the solvent through the driving component 20;

[0057] When the first on-off valve 404 and the fourth on-off valve 504 are opened, and the second on-off valve 405 and the third on-off valve 503 are closed, the reaction kettle 10 is emptied of the solvent through the driving component 20;

[0058] When the third on-off valve 503 and the fourth on-off valve 504 are open, and the first on-off valve 404 and the second on-off valve 405 are closed, the external device 30 drains the solvent via the driving component 20. It is understood that by controlling the opening and closing of multiple on-off valves, multiple operating modes can be achieved, while also achieving a good switching effect between operating modes, thereby achieving multiple functional effects.

[0059] Specifically, the system adjusts the various functions of the reactor 10 by opening or closing the valve. When the following operations are performed, the pump is in the normally open state:

[0060] 1. Circulation system between the reactor 10 and the external device 30: When circulating through the reactor 10 and the external device 30, the first on-off valve 404 and the second on-off valve 405 are opened, and the third on-off valve 503 and the fourth on-off valve 504 are closed. The system controls the pump to circulate between the reactor 10 and the external device 30 through the corresponding pipelines;

[0061] 2. Draining the solvent from the reactor 10 and the external device 30: When it is necessary to drain the solvent from the reactor 10 and the external device 30, the first on-off valve 404, the third on-off valve 503, and the fourth on-off valve 504 are opened, and the second on-off valve 405 is closed. The system controls the pump to drain the solvent from the reactor 10 and the external device 30 through the corresponding pipelines.

[0062] 3. Emptying the solvent from the reactor 10: When the solvent in the reactor 10 needs to be empty, the first on-off valve 404 and the fourth on-off valve 504 are opened, and the second on-off valve 405 and the third on-off valve 503 are closed. The system controls the pump to empty the solvent from the reactor 10 through the corresponding pipeline.

[0063] 4. Emptying the solvent of the external device 30: When the solvent of the external device 30 needs to be empty, the third switch valve 503 and the fourth switch valve 504 are opened, and the first switch valve 404 and the second switch valve 405 are closed. The system controls the pump to empty the solvent of the external device 30 through the corresponding pipeline.

[0064] Furthermore, the first on-off valve 404, the second on-off valve 405, the third on-off valve 503 and the fourth on-off valve 504 are three-way valves. It can be understood that this can achieve an effect that is easy to implement and convenient to operate.

[0065] Furthermore, it further comprises: a main controller (not shown), the main controller being electrically connected to the driving component 20, the solvent circulation pipeline 40 and the solvent exhaust pipeline 50 respectively;

[0066] The main controller issues control instructions based on received operation instructions to control the on / off valves in the solvent circulation line 40 and the solvent exhaust line 50, respectively, to switch between various modes. It is understood that by using an intelligent controller to control the on / off status of each valve according to different functional logics, good control effects can be achieved, thereby realizing the effect of intelligent mode switching.

[0067] Furthermore, the main controller is an MCU, SOC or PLC. It is understandable that a variety of main controller models can be selected, thereby achieving the effect of flexible use and further achieving the effect of improving market competitiveness.

[0068] Furthermore, the driving component 20 is a membrane pump. It is understood that a membrane pump, also known as a diaphragm pump, is a positive displacement pump that uses a flexible diaphragm (usually rubber, thermoplastic or other elastic material) to propel fluids, and is used in liquid delivery applications that require precision, cleanliness or corrosion resistance.

[0069] It should be noted that the working principle of the diaphragm pump is based on the reciprocating motion of the diaphragm. The driving device (such as an electric motor, pneumatic device or mechanical drive) drives the diaphragm to reciprocate in the pump chamber, changing the volume of the pump chamber and thus generating a pressure difference.

[0070] The specific process is as follows:

[0071] Suction process: When the diaphragm is pulled outward, the internal volume of the pump chamber increases, the pressure decreases, and a vacuum is generated. At this time, the inlet valve opens and the fluid is sucked into the pump chamber.

[0072] Discharge process: When the diaphragm is pushed inward, the volume of the pump chamber decreases, the internal pressure increases, forcing the outlet valve to open and the fluid to be discharged.

[0073] Diaphragm pumps typically have two or more pump chambers that can suction and discharge at different times, providing a continuous flow rate.

[0074] It should be noted that the devices that can implement the above system include but are not limited to: a reactor 10, the outlet of the reactor 10 is connected to two three-way valves through pipelines, the two three-way valves are connected to a diaphragm pump through pipelines, the diaphragm pump is connected to an external device 30 through a pipeline, and the external device 30 is connected to the inlet 103 of the reactor 10 through a pipeline.

[0075] Of course, other components can be added based on actual usage requirements to meet the needs of multiple functions.

[0076] The utility model also has the following beneficial effects:

[0077] 1. Intelligent control: The system is equipped with a controller to adjust the opening and closing of valves according to the circulation, emptying and other functions, ensuring the efficient integration of the reactor 10 and the external equipment 30 to achieve different functions.

[0078] 2. Automatic valve switching: By switching the open and closed state of the valve and the normally open state of the pump, the circulation system of the reactor 10 and the external equipment 30, the solvent emptying of the reactor 10 and the external equipment 30, the solvent emptying of the reactor 10, the solvent emptying of the external equipment 30 and other process flows are realized, thereby improving the operation convenience and system stability.

[0079] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the scope of protection of the present invention.

Claims

1. Reactor circulation emptying system, characterized by: include: A reaction kettle (10), a driving component (20) and an external device (30) connected in sequence; The reactor (10), the driving component (20) and the external device (30) are respectively connected via a solvent circulation pipeline (40) and a solvent exhaust pipeline (50); Wherein, the circulation and emptying system has a solvent circulation mode and a solvent emptying mode; When the circulating emptying system is switched to the solvent circulation mode, the preset first valve group in the solvent circulation pipeline (40) is opened or closed according to a preset sequence, and the driving component (20) drives the reaction kettle (10) and the external device (30) to circulate the solvent according to the preset solvent circulation pipeline (40); When the circulating emptying system switches to the solvent emptying mode, the preset second valve group in the solvent emptying pipeline (50) is opened or closed according to a preset sequence, and the driving component (20) drives at least the reactor (10) and / or the external device (30) to empty the solvent according to the solvent emptying pipeline (50).

2. The circulating emptying system of the reactor (10) according to claim 1, characterized in that: The reactor (10) comprises a reactor body (101), an outlet is provided at the bottom of the reactor body (101), a flange (102) is provided at the outlet, and an inlet (103) is provided on one side of the reactor body (101) close to the top.

3. The circulating emptying system of the reactor (10) according to claim 1, characterized in that: The solvent circulation pipeline (40) comprises: a first pipeline (401) connected to the bottom of the reactor (10); the end of the first pipeline (401) is connected to the input end of the driving component (20); the output end of the driving component (20) is connected to the input end of the external device (30) through a second pipeline (402); and the output end of the external device (30) is connected to the inlet (103) of the reactor (10) through a third pipeline (403).

4. The circulating emptying system of the reactor (10) according to claim 3, characterized in that: The first pipeline (401) is provided with a first switch valve (404), and the second pipeline (402) is provided with a second switch valve (405).

5. The circulating emptying system of the reactor (10) according to claim 4, characterized in that: The solvent exhaust pipeline (50) comprises: a fourth pipeline (501), the input end of the driving component (20) is connected to the input end of the external device (30) through the fourth pipeline (501), and the second pipeline (402) is provided with a bypass pipeline (502); The fourth pipeline (501) intersects with the second pipeline (402) at a first node (60), and the first node (60) is located at the outlet of the second switch valve (405); the fourth pipeline (501) intersects with the first pipeline (401) at a second node (70), and the second node (70) is located at the outlet of the first switch valve (404).

6. The circulating emptying system of the reactor (10) according to claim 5, characterized in that: The fourth pipeline (501) is provided with a third switch valve (503), and the bypass pipeline (502) is provided with a fourth switch valve (504); When the first switch valve (404) and the second switch valve (405) are opened, and the third switch valve (503) and the fourth switch valve (504) are closed, the reaction kettle (10) and the external device (30) circulate the solvent through the driving component (20).

7. The circulating emptying system of the reactor (10) according to claim 6, characterized in that: When the first on-off valve (404), the third on-off valve (503) and the fourth on-off valve (504) are opened and the second on-off valve (405) is closed, the reaction kettle (10) and the external device (30) are emptied of the solvent through the driving component (20); When the first on-off valve (404) and the fourth on-off valve (504) are opened, and the second on-off valve (405) and the third on-off valve (503) are closed, the reaction kettle (10) is emptied of the solvent through the driving component (20); When the third on-off valve (503) and the fourth on-off valve (504) are opened, and the first on-off valve (404) and the second on-off valve (405) are closed, the external device (30) empties the solvent through the driving component (20).

8. The circulating emptying system of the reactor (10) according to claim 7, characterized in that: The first on-off valve (404), the second on-off valve (405), the third on-off valve (503) and the fourth on-off valve (504) are three-way valves.

9. The circulating emptying system of the reactor (10) according to claim 1, characterized in that: Also includes: a main controller, the main controller being electrically connected to the driving component (20), the solvent circulation pipeline (40) and the solvent exhaust pipeline (50) respectively; The main controller issues control instructions according to the received operation instructions to respectively control the actions of the switch valves in the solvent circulation pipeline (40) and the solvent exhaust pipeline (50) to switch between multiple modes.

10. The circulating emptying system of the reactor (10) according to claim 1, characterized in that: The driving component (20) is a diaphragm pump.

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