Automatic sampling device in chemical synthesis process

Abstract

The invention relates to the technical field of chemical synthesis, and discloses an automatic sampling device in a chemical synthesis process, the automatic sampling device comprises a reaction furnace body, the inner side of the reaction furnace body is fixedly provided with two fixed cylinders, the interiors of the fixed cylinders are slidably connected with pistons, the outer sides of the pistons are fixedly connected with movable rods, and the movable rods are fixedly connected with the fixed cylinders. And the outer surface of the fixing barrel sequentially communicates with an air inlet pipe and a conveying pipe, first one-way valves are installed in the conveying pipe and the air inlet pipe correspondingly, and one end of the conveying pipe communicates with a mounting pipe. The sampling mechanism is arranged on the side surface of the reaction furnace, and a driving disc is used for driving a hinge rod to reciprocate, so that a piston reciprocates along the interior of a fixed cylinder, and gas is generated in a conveying pipe. The liquid in the reaction furnace is collected into the collecting bottle according to the Bernoulli principle, so that the sampling efficiency is remarkably improved, the sampling time is shortened, meanwhile, the interference to the internal environment of the reaction furnace is reduced, and the continuity and stability of the reaction process are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical synthesis, and particularly to an automatic sampling device in the process of chemical synthesis. Background Art

[0002] In the process of chemical synthesis, the reaction furnace, as the core equipment, undertakes the key task of converting raw materials into target products. Chemical synthesis usually involves complex chemical reactions, which need to be carried out under strict temperature, pressure and fluid environment conditions to ensure the efficiency of the reaction and the stability of the product. In order to monitor the reaction process in real time, optimize the process parameters and ensure the product quality, sampling technology plays an indispensable role in chemical synthesis. However, there are many deficiencies in the existing sampling technologies. Traditional sampling methods mostly rely on manual operation, which is not only inefficient, but also complex in operation, and is prone to sampling errors due to human factors. In addition, manual sampling requires frequent opening of the reaction furnace, which not only increases energy consumption, but also may introduce external impurities, interfere with the reaction environment, and affect the continuity and stability of the reaction. In recent years, although some automatic sampling devices have been applied, these devices still have obvious limitations in dealing with high-viscosity and easily crystallizable liquids. The fluidity of high-viscosity liquids is poor, and it is difficult for traditional sampling devices to effectively extract them; while easily crystallizable liquids are prone to block the pipeline during the sampling process, resulting in the failure of the device.

[0003] Therefore, those skilled in the art propose an automatic sampling device in the process of chemical synthesis to solve the above problems. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an automatic sampling device in the process of chemical synthesis, which solves the problems raised in the above background art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: An automatic sampling device in the process of chemical synthesis, including a reaction furnace body, two fixed cylinders are fixedly installed inside the reaction furnace body, a piston is slidably connected inside the fixed cylinder, a movable rod is fixedly connected to the outside of the piston, an air inlet pipe and a transport pipe are sequentially communicated on the outer surface of the fixed cylinder, one-way valves I are installed inside both the transport pipe and the air inlet pipe, one end of the transport pipe is communicated with an installation pipe, a plurality of sampling pipes are communicated on the outer surface of the installation pipe, one end of the installation pipe is communicated with a connecting pipe, a collection bottle is detachably connected to the outer surface of the connecting pipe, and a cleaning component is installed outside the reaction furnace body, and the cleaning component is used to clean the chemical liquid remaining inside the transport pipe and the installation pipe.

[0006] Preferably, the cleaning assembly includes a filter tube detachably connected to the outside of the reaction furnace body. A pump body is installed outside the filter tube. The output end of the pump body is fixedly connected to a second connecting pipe, and the input end of the pump body is fixedly connected to two first connecting pipes. A second one-way valve is installed inside the first connecting pipe. One end of the connecting pipe communicates with the filter tube, and one side of the filter tube communicates with a return pipe.

[0007] Preferably, an activated carbon filter screen is installed inside the filter tube. The activated carbon filter screen is used to clean the impurities contained in the inert gas. One end of the return pipe communicates with the top of the filter tube.

[0008] Preferably, one end of the second connecting pipe communicates with the bottom of the filter tube, and one end of the first connecting pipe communicates with the inside of the transport pipe.

[0009] Preferably, the conduction directions of the two first one-way valves are opposite, and the cross-sectional area of the fixed cylinder is larger than that of the installation pipe.

[0010] Preferably, a second drive motor is fixedly installed outside the reaction furnace body. The output end of the second drive motor is fixedly connected to a transmission shaft. One end of the transmission shaft penetrates through the outside of the reaction furnace body and is fixedly connected to a second bevel gear. The inside of the reaction furnace body is movably connected to an installation shaft through a bearing. The top of the installation shaft is fixedly connected to a drive disk. A first bevel gear is fixedly connected to the outside of the installation shaft. Two hinge rods are hinged to the eccentric part outside the drive disk.

[0011] Preferably, the outside of the second bevel gear is meshed with the outside of the first bevel gear. A dredging blade is fixedly connected to the middle of the outside of the installation shaft. The dredging blade is used to dredge the discharge pipe at the bottom of the reaction furnace body. A support frame is rotatably connected to the outside of the installation shaft. The bottom of the support frame is fixedly connected to the inner wall of the reaction furnace body.

[0012] Preferably, the end of the movable rod away from the piston penetrates through one side of the fixed cylinder and is movably connected to one end of the hinge rod. A connecting plate is fixedly connected to the outer surface of the movable rod. The same number of sealing pipes as the sampling pipes are fixedly connected to the outside of the connecting plate. The sealing pipes are adapted to the sampling pipes.

[0013] Preferably, a first drive motor is installed on the top of the reaction furnace body. The output end of the first drive motor is fixedly connected to a drive shaft. A plurality of mixing blades are fixedly connected to the outer surface of the drive shaft.

[0014] Preferably, a liquid inlet pipe communicates with one side of the top of the reaction furnace body. The liquid inlet pipe is used to transport chemical liquid into the reaction furnace body.

[0015] The present invention provides an automatic sampling device in the process of chemical synthesis. It has the following beneficial effects:

[0016] 1. In the present invention, a sampling mechanism is arranged on the side of the reaction furnace body. The driving disk drives the articulated rod to reciprocate, so that the piston reciprocates inside the fixed cylinder, thereby generating gas inside the transport pipe. And the liquid in the reaction furnace body is collected into the collection bottle through the Bernoulli principle. This sampling method significantly improves the sampling efficiency, reduces the sampling time, and at the same time reduces the interference with the internal environment of the reaction furnace, ensuring the continuity and stability of the reaction process. At the same time, this device is applicable to high-viscosity and easily crystallizable liquids, greatly improving the flexibility of the device.

[0017] 2. In the present invention, inert gas is used to clean the residual liquid inside the transport pipe and the installation pipe, which can quickly and effectively remove the liquid residue on the inner wall of the pipe, ensure the cleanliness of the pipe after sampling, and at the same time ensure the cleanliness of the pipe after each sampling, avoiding cross-contamination between different batches or different types of liquids, ensuring the representativeness of the sample and the accuracy of the test results. And the present invention can recover and purify the inert gas to ensure the cleanliness of the gas, realize the recycling of the inert gas, reduce the operation cost, and reduce resource waste.

[0018] 3. When the present invention does not sample, a plurality of sealed pipes can be respectively sleeved outside the sampling pipe to prevent chemical liquid from entering the inside of the sampling pipe, thus keeping the inside of the sampling pipe clean, reducing the cleaning workload before sampling, and at the same time effectively preventing pressure fluctuations caused by liquid entering the pipe, ensuring the pressure stability of the inside of the reaction furnace body, and maintaining the continuity of the reaction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of the present invention;

[0020] Figure 2 is a schematic structural view of the reflux pipe of the present invention;

[0021] Figure 3 is a schematic structural view of the inside of the fixed cylinder of the present invention;

[0022] Figure 4 is a schematic structural view of the inside of the reaction furnace body of the present invention;

[0023] Figure 5 is a schematic structural view of the first connecting pipe of the present invention;

[0024] Figure 6 is Figure 4 the enlarged view at A in

[0025] Figure 7 is Figure 2 the enlarged view at B in

[0026] Figure 8 Schematic diagram of the drive disk structure of the present invention.

[0027] Among them, 1 is the reaction furnace body; 201 is the first drive motor; 202 is the drive shaft; 203 is the mixing blade; 301 is the second drive motor; 302 is the transmission shaft; 303 is the drive disk; 304 is the articulated rod; 305 is the first bevel gear; 306 is the second bevel gear; 401 is the fixed cylinder; 402 is the intake pipe; 403 is the movable rod; 404 is the transport pipe; 405 is the installation pipe; 406 is the sampling pipe; 407 is the connection pipe; 408 is the collection bottle; 409 is the first one-way valve; 410 is the piston; 501 is the return pipe; 502 is the filter pipe; 503 is the first connecting pipe; 504 is the second one-way valve; 505 is the second connecting pipe; 506 is the pump body; 6 is the liquid inlet pipe; 7 is the support frame; 8 is the installation shaft; 9 is the dredging blade; 10 is the connecting plate; 11 is the sealing pipe. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to the attached Figure 1 -attached Figure 8 , the embodiment of the present invention provides an automatic sampling device in the chemical synthesis process, including a reaction furnace body 1. Two fixed cylinders 401 are fixedly installed inside the reaction furnace body 1. A piston 410 is slidably connected inside the fixed cylinder 401. An outer side of the piston 410 is fixedly connected with a movable rod 403. An intake pipe 402 and a transport pipe 404 are sequentially communicated on an outer surface of the fixed cylinder 401. One-way valves 409 are installed inside both the transport pipe 404 and the intake pipe 402. One end of the transport pipe 404 is communicated with an installation pipe 405. A plurality of sampling pipes 406 are communicated on an outer surface of the installation pipe 405. One end of the installation pipe 405 is communicated with a connection pipe 407. A collection bottle 408 is detachably connected to an outer surface of the connection pipe 407. A cleaning assembly is installed outside the reaction furnace body 1. The cleaning assembly is used to clean the chemical liquid remaining inside the transport pipe 404 and the installation pipe 405. The conduction directions of the two one-way valves 409 are opposite. A cross-sectional area of the fixed cylinder 401 is larger than a cross-sectional area of the installation pipe 405.

[0030] Specifically, the reaction furnace body 1 is used for carrying out chemical synthesis reactions, and monitors are installed inside to monitor the reaction process. The piston 410 slides inside the fixed cylinder 401, thereby changing the gas volume and pressure inside the fixed cylinder 401. The installation pipe 405 is used to guide the flow of gas and liquid. The sampling pipe 406 extends into the reaction furnace body 1 to suck liquid samples. The collection bottle 408 is used to store the sampled liquid. The cleaning component is used to clean the chemical liquid remaining inside the transport pipe 404 and the installation pipe 405, ensuring the accuracy of the sampling process and the long-term stable operation of the device.

[0031] The movable rod 403 drives the piston 410 to reciprocate left and right inside the fixed cylinder 401, changing the gas volume and pressure inside the fixed cylinder 401. When the piston 410 moves towards the movable rod 403, the one-way valve 409 in the intake pipe 402 closes, and the one-way valve 409 in the transport pipe 404 opens, and gas enters the fixed cylinder 401 through the intake pipe 402. When the piston 410 moves in the opposite direction, the states of the two one-way valves 409 change, and the gas is discharged from the fixed cylinder 401 through the transport pipe 404. Since the cross-sectional area of the installation pipe 405 is much smaller than that of the fixed cylinder 401, when the gas enters the installation pipe 405, the flow rate increases rapidly. According to Bernoulli's principle, the faster the flow rate, the lower the pressure, thereby generating suction in the sampling pipe 406 to suck the liquid in the reaction furnace body 1 into the collection bottle 408. The liquid flows into the collection bottle 408 through the installation pipe 405 and the connecting pipe 407, completing the sampling process.

[0032] It has the following advantages:

[0033] First, the entire sampling process does not require opening the cover plate of the reaction furnace body 1, reducing the operation steps and time, and improving the sampling efficiency.

[0034] Second, it avoids liquid leakage and volatilization, reduces environmental pollution, meets the environmental protection requirements of modern chemical production, and at the same time prevents liquid leakage and pressure fluctuations, ensuring the continuity and stability of the reaction process and reducing the operation risk.

[0035] Third, it is applicable to a variety of liquid properties and reaction conditions, including high-viscosity, easily crystallizable liquids, as well as different pressure and temperature environments, with wide applicability and good compatibility.

[0036] The cleaning component includes a filter tube 502 detachably connected to the outside of the reaction furnace body 1. A pump body 506 is installed outside the filter tube 502. The output end of the pump body 506 is fixedly connected to a second connecting pipe 505, and the input end of the pump body 506 is fixedly connected to two first connecting pipes 503. A second check valve 504 is installed inside the first connecting pipe 503. One end of a connecting pipe 407 communicates with the filter tube 502, and one side of the filter tube 502 communicates with a return pipe 501. An activated carbon filter screen is installed inside the filter tube 502, and the activated carbon filter screen is used to clean the impurities contained in the inert gas. One end of the return pipe 501 communicates with the top of the filter tube 502. One end of the second connecting pipe 505 communicates with the bottom of the filter tube 502, and one end of the first connecting pipe 503 communicates with the inside of a transport pipe 404.

[0037] Specifically, the filter tube 502 is used to filter the inert gas. The pump body 506 is used to drive the flow of the inert gas. The second connecting pipe 505 is used to transfer the inert gas to the transport pipe 404. The first connecting pipe 503 is used to introduce the inert gas into the pump body 506. The second check valve 504 is used to ensure that the inert gas can only flow in one direction. The return pipe 501 is used to return the filtered inert gas to the filter tube 502. The activated carbon filter screen is used to clean the impurities in the inert gas.

[0038] By starting the pump body 506, the inert gas stored inside the filter tube 502 is transferred to the first connecting pipe 503 through the second connecting pipe 505. The inert gas is discharged into the transport pipe 404 through the first connecting pipe 503 and flows inside the transport pipe 404, the installation pipe 405, and the connecting pipe 407. By adjusting the flow rate and pressure of the inert gas, a high-speed gas flow is formed inside the pipeline, so as to effectively strip and remove the liquid residue on the inner wall. After the cleaning is completed, the inert gas is filtered through the activated carbon filter screen inside the filter tube 502 to remove the impurities in the gas. The filtered inert gas is returned to the filter tube 502 through the return pipe 501, realizing the recycling of the inert gas and reducing resource waste.

[0039] The liquid residue on the inner wall of the pipeline is effectively stripped and removed by the high-speed gas flow, ensuring the cleanliness of the pipeline after each sampling. At the same time, it ensures no cross-contamination between different batches or different types of liquids, guaranteeing the representativeness of the samples and the accuracy of the test results. This cleaning process is automated, reducing manual intervention and improving the convenience and efficiency of the operation.

[0040] A drive motor two 301 is fixedly installed on the outer side of the reaction furnace body 1. The output end of the drive motor two 301 is fixedly connected with a transmission shaft 302. One end of the transmission shaft 302 penetrates through the outside of the reaction furnace body 1 and is fixedly connected with a bevel gear two 306. Inside the reaction furnace body 1, an installation shaft 8 is movably connected through a bearing. The top of the installation shaft 8 is fixedly connected with a drive disk 303. On the outer side of the installation shaft 8, a bevel gear one 305 is fixedly connected. At an eccentric position outside the drive disk 303, two hinge rods 304 are hinged. The outer side of the bevel gear two 306 is meshed and connected with the outer side of the bevel gear one 305. In the middle of the outer side of the installation shaft 8, a dredging blade 9 is fixedly connected. The dredging blade 9 is used to dredge the discharge pipe at the bottom of the reaction furnace body 1. The outside of the installation shaft 8 is rotatably connected with a support frame 7. The bottom of the support frame 7 is fixedly connected with the inner wall of the reaction furnace body 1.

[0041] Specifically, the transmission shaft 302 is used to transmit rotational motion. The bevel gear two 306 is used to change the direction of motion and transmit power. The installation shaft 8 is used to dredge the discharge pipe at the bottom of the reaction furnace body 1. The bevel gear one 305 is meshed with the bevel gear two 306.

[0042] Start the drive motor two 301, and its output end drives the transmission shaft 302 to rotate synchronously. The rotational motion of the transmission shaft 302 is transmitted to the bevel gear two 306, causing it to rotate coaxially. The bevel gear two 306 drives the bevel gear one 305 meshed with it to rotate synchronously. The rotation of the bevel gear one 305 drives the drive disk 303 to rotate. When the drive disk 303 rotates, one end of the hinge rod 304 hinged at its eccentric position swings. The swing of the hinge rod 304 acts on the movable rod 403 through traction force, causing it to move left and right reciprocally. When the installation shaft 8 rotates, it drives the dredging blade 9 to rotate synchronously. This hybrid structure realizes the efficient mixing of the liquid in the reaction furnace body 1 through reasonable mechanical design and power transmission, provides reliable support for the automatic sampling device in the chemical synthesis process, and ensures the accuracy of sampling and the stability of the reaction process.

[0043] One end of the movable rod 403 away from the piston 410 penetrates through one side of the fixed cylinder 401 and is movably connected with one end of the hinge rod 304. On the outer surface of the movable rod 403, a connecting plate 10 is fixedly connected. On the outer side of the connecting plate 10, a sealing pipe 11 with the same number as the sampling pipe 406 is fixedly connected. The sealing pipe 11 is adapted to the sampling pipe 406.

[0044] Specifically, the sealing pipe 11 is designed to be adapted to the sampling pipe 406 and is used to sleeved outside the sampling pipe 406 in the non-sampling state to prevent liquid from entering.

[0045] After the cleaning component finishes cleaning the pipeline, the movement of the movable rod 403 drives the connecting plate 10 to move synchronously. The movement of the connecting plate 10 sleevs the sealing pipe 11 outside the sampling pipe 406. The sealing pipe 11 fits tightly with the sampling pipe 406 to form an effective seal. After the sealing pipe 11 is sleeved outside the sampling pipe 406, it prevents chemical liquid from entering the interior of the relevant pipeline through the sampling pipe 406, avoiding liquid leakage. By preventing liquid from entering the pipeline, the sealing system effectively avoids pressure fluctuations inside the reaction furnace body 1 caused by liquid leakage, ensuring the continuity and stability of the reaction process.

[0046] The tight fit between the sealing pipe 11 and the sampling pipe 406 ensures the sealing performance of the pipeline in the non-sampling state, effectively preventing liquid leakage. At the same time, it avoids pressure fluctuations caused by liquid entering the pipeline, ensuring the stability of the internal environment of the reaction furnace body 1.

[0047] A driving motor 201 is installed at the top of the reaction furnace body 1. The output end of the driving motor 201 is fixedly connected to a driving shaft 202, and the outer surface of the driving shaft 202 is fixedly connected with a plurality of mixing blades 203. One side of the top of the reaction furnace body 1 is communicated with a liquid inlet pipe 6, and the liquid inlet pipe 6 is used to transport chemical liquid into the reaction furnace body 1.

[0048] Specifically, start the driving motor 201, and its output end drives the driving shaft 202 to rotate. The rotation of the driving shaft 202 drives the mixing blades 203 to rotate synchronously, stirring the chemical liquid in the reaction furnace body 1.

[0049] Through the rotation of the mixing blades 203, it is ensured that the chemical liquid in the reaction furnace body 1 is fully mixed, improving the uniformity of the liquid. Chemical liquid is transported into the reaction furnace body 1 through the liquid inlet pipe 6 to ensure sufficient raw materials for the reaction.

[0050] Working principle: When specifically using this device, it includes the following detailed operating principles:

[0051] When it is necessary to extract the chemical liquid inside the reaction furnace body 1, the driving motor two 301 is started. The rotation of the output end of the driving motor two 301 drives the transmission shaft 302 to rotate synchronously. The rotation of the transmission shaft 302 drives the bevel gear two 306 to rotate coaxially. The bevel gear two 306 drives the engaged bevel gear one 305 to rotate synchronously. The bevel gear one 305 drives the driving disk 303 to rotate. When the driving disk 303 rotates, it drives one end of the articulated rod 304 to swing. Under the traction force of the articulated rod 304, the movable rod 403 moves left and right reciprocally, and then drives the piston 410 to move left and right reciprocally along the inner wall of the fixed cylinder 401. When the piston 410 moves towards the direction of the movable rod 403, the check valve one 409 inside the intake pipe 402 is closed, while the check valve one 409 inside the transport pipe 404 is opened. The gas enters the inner cavity of the fixed cylinder 401 through the intake pipe 402. When the piston 410 moves in the opposite direction, the states of the two check valves one 409 change. At this time, the gas inside the fixed cylinder 401 is discharged into the installation pipe 405 through the transport pipe 404. Since the cross-sectional area of the installation pipe 405 is much smaller than that of the fixed cylinder 401, when the gas enters the installation pipe 405, its speed increases rapidly. Due to the acceleration of the gas in the installation pipe 405 and its relatively large flow rate, according to Bernoulli's principle, the faster the gas flow rate, the smaller its pressure. Thus, the pressure inside the sampling pipe 406 is relatively small, and then a suction force is generated inside the sampling pipe 406, sucking the chemical liquid inside the reaction furnace body 1 into the collection bottle 408 through the installation pipe 405 for collection. Such an operation is simple and convenient, reduces the interference to the internal environment of the reaction furnace body 1, and ensures the continuity and stability of the reaction process;

[0052] After the sampling is completed, the inert gas stored inside the filter pipe 502 is transmitted to the connecting pipe one 503 through the connecting pipe two 505 by starting the pump body 506, and is discharged into the transport pipe 404 through the connecting pipe one 503. Then, the inert gas flows inside the transport pipe 404, the installation pipe 405 and the connecting pipe 407. By adjusting the flow rate and pressure of the inert gas, a high-speed gas flow is formed inside the pipeline, effectively stripping and removing the liquid residues on the inner wall, ensuring the cleanliness of the pipeline after each sampling, avoiding cross-contamination between different batches or different types of liquids, ensuring the representativeness of the samples and the accuracy of the test results. Then, the inert gas is filtered by the filter pipe 502 and flows back into the return pipe 501, and then flows back into the filter pipe 502 through the return pipe 501, reducing the waste of inert gas resources;

[0053] After the cleaning is completed, the movement of the movable rod 403 drives the connecting plate 10 to move synchronously, and then the sealing pipe 11 is sleeved outside the sampling pipe 406, preventing the chemical liquid from entering the inside of the relevant pipeline through the sampling pipe 406 and preventing the pressure fluctuation caused by the liquid inside the reaction furnace body 1 from entering the pipeline.

[0054] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sampling device in a chemical synthesis process, comprising a reaction furnace body (1), characterized in that: Two fixed cylinders (401) are fixedly installed on the inner side of the reaction furnace body (1), a piston (410) is slidably connected to the interior of the fixed cylinder (401), a movable rod (403) is fixedly connected to the outer side of the piston (410), an air intake pipe (402) and a transport pipe (404) are sequentially connected to the outer surface of the fixed cylinder (401), a one-way valve (409) is installed inside the transport pipe (404) and the air intake pipe (402), and the transport pipe (404) and the air intake pipe (402) are both One end of the (404) is connected to a mounting tube (405), the outer surface of the mounting tube (405) is connected to a plurality of sampling tubes (406), one end of the mounting tube (405) is connected to a connecting tube (407), the outer surface of the connecting tube (407) is detachably connected to a collecting bottle (408), and a cleaning assembly is installed on the outer side of the reaction furnace body (1), and the cleaning assembly is used to clean the chemical liquid remaining inside the transport tube (404) and the mounting tube (405).

2. The automatic sampling device in a chemical synthesis process according to claim 1, characterized in that: The cleaning assembly comprises a filter tube (502) detachably connected to the outside of the reaction furnace body (1); a pump body (506) is installed outside the filter tube (502); the output end of the pump body (506) is fixedly connected to a second connecting tube (505); the input end of the pump body (506) is fixedly connected to two first connecting tubes (503); a second one-way valve (504) is installed inside the first connecting tube (503); one end of the connecting tube (407) is connected to the filter tube (502); and one side of the filter tube (502) is connected to a reflux pipe (501).

3. The automatic sampling device in a chemical synthesis process according to claim 2, characterized in that: An activated carbon filter is installed inside the filter tube (502), and the activated carbon filter is used to clean impurities contained in the inert gas. One end of the reflux pipe (501) is connected to the top of the filter tube (502).

4. The automatic sampling device in a chemical synthesis process according to claim 2, characterized in that: One end of the second connecting pipe (505) is connected to the bottom of the filter pipe (502), and one end of the first connecting pipe (503) is connected to the inside of the transport pipe (404).

5. The automatic sampling device in a chemical synthesis process according to claim 1, characterized in that: The two one-way valves (409) have opposite conduction directions, and the cross-sectional area of ​​the fixing tube (401) is larger than the cross-sectional area of ​​the installation tube (405).

6. The automatic sampling device in a chemical synthesis process according to claim 1, characterized in that: A second drive motor (301) is fixedly mounted on the outside of the reaction furnace body (1); the output end of the second drive motor (301) is fixedly connected to a transmission shaft (302); one end of the transmission shaft (302) passes through the outside of the reaction furnace body (1) and is fixedly connected to a second bevel gear (306); the inside of the reaction furnace body (1) is movably connected to a mounting shaft (8) via a bearing; the top of the mounting shaft (8) is fixedly connected to a drive disk (303); the outside of the mounting shaft (8) is fixedly connected to a first bevel gear (305); and two hinged rods (304) are hinged at an eccentric position on the outside of the drive disk (303).

7. The automatic sampling device in a chemical synthesis process according to claim 6, characterized in that: The outer side of the bevel gear 2 (306) is meshingly connected with the outer side of the bevel gear 1 (305); a dredging blade (9) is fixedly connected to the middle part of the outer side of the mounting shaft (8); the dredging blade (9) is used to dredge the discharge pipe at the bottom of the reaction furnace body (1); the outer side of the mounting shaft (8) is rotatably connected to a support frame (7); the bottom of the support frame (7) is fixedly connected to the inner wall of the reaction furnace body (1).

8. The automatic sampling device in a chemical synthesis process according to claim 1, characterized in that: The end of the movable rod (403) away from the piston (410) passes through one side of the fixed cylinder (401) and is movably connected to one end of the hinged rod (304); the outer surface of the movable rod (403) is fixedly connected to a connecting plate (10); the outer side of the connecting plate (10) is fixedly connected to the same number of sealing tubes (11) as the sampling tube (406); the sealing tubes (11) are adapted to the sampling tubes (406).

9. The automatic sampling device in a chemical synthesis process according to claim 1, characterized in that: A driving motor 1 (201) is installed on the top of the reaction furnace body (1); the output end of the driving motor 1 (201) is fixedly connected to a driving shaft (202); and the outer surface of the driving shaft (202) is fixedly connected to a plurality of mixing blades (203).

10. The automatic sampling device in a chemical synthesis process according to claim 1, characterized in that: A liquid inlet pipe (6) is connected to one side of the top of the reaction furnace body (1), and the liquid inlet pipe (6) is used to transport chemical liquid into the interior of the reaction furnace body (1).

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