Automatic and high-throughput integrated device for sample detection pretreatment of gas chromatograph

Abstract

The invention discloses an automatic and high-flux integrated device for sample detection pretreatment of a gas chromatograph, and relates to the technical field of detection equipment, the automatic and high-flux integrated device comprises a gas chromatograph main body and a shell, one end of the gas chromatograph main body is fixedly connected with the shell, the top end of the shell is fixedly connected with a placing rack, a weighing mechanism and an extraction mechanism, and the placing rack is fixedly connected with the gas chromatograph main body. One end of the extraction mechanism is communicated with a liquid separation mechanism, a liquid outlet is formed in the inner side of the shell, one end of the shell is rotatably connected with a second door plate, and a waste liquid box is placed on the inner side of the shell. After sample treatment is completed, the device can automatically execute a cleaning procedure without manual intervention, and due to the high-automation design, the automation level of the device is remarkably improved, the overall detection efficiency is greatly improved, and powerful support is provided for experimental analysis work.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and particularly to an automated and high-throughput integrated device for the pretreatment of samples before detection by a gas chromatograph. Background Art

[0002] A gas chromatograph is an instrument that uses chromatographic separation technology and detection technology to qualitatively and quantitatively analyze complex mixtures of multiple components. It can generally be used to analyze organic substances in soil that are thermally stable and have a boiling point not exceeding 500 °C, such as volatile organic compounds, organochlorines, organophosphorus, polycyclic aromatic hydrocarbons, phthalic acid esters, etc.

[0003] Before the sample is processed by the gas chromatograph, it needs to be extracted first. Common extraction methods include liquid-liquid extraction and Soxhlet extraction, etc. The existing gas chromatographs do not have a mechanism for the pretreatment of samples before detection, and manual processing of samples is required before detection. The manual processing has low work efficiency, and the corresponding tools need to be manually cleaned after processing, which is not conducive to the processing and detection of multiple samples. Therefore, an automated and high-throughput integrated device for the pretreatment of samples before detection by a gas chromatograph is proposed for the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an automated and high-throughput integrated device for the pretreatment of samples before detection by a gas chromatograph to solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] An automated and high-throughput integrated device for the pretreatment of samples before detection by a gas chromatograph includes a gas chromatograph main body and a housing. One end of the gas chromatograph main body is fixedly connected to the housing. An injector is provided at the medicine inlet of the gas chromatograph main body. A regulating mechanism is provided on one side of the injector. A test tube is placed on the top of the regulating mechanism. A placement rack, a weighing mechanism, and an extraction mechanism are fixedly connected to the top of the housing. One end of the extraction mechanism is communicated with a liquid separation mechanism, and the outlet end of the liquid separation mechanism is arranged at the inlet of the test tube. A liquid discharge port is opened inside the housing. A second door panel is rotatably connected to one end of the housing. A waste liquid tank is placed inside the housing, and the liquid discharge port is arranged above the waste liquid tank;

[0007] A solvent tank is placed inside the placement rack. A second support plate is fixedly connected to the top of the housing. A fourth electric telescopic rod is fixedly connected to the inside of the second support plate. One end of the fourth electric telescopic rod is fixedly connected to a placement plate. A second water pump is fixedly connected to the top of the placement plate. The inlet end of the second water pump is connected to a flow valve, and the flow valve is communicated with the solvent tank through a pipeline;

[0008] A first support plate is fixedly connected to the top end of the housing. A second electric telescopic rod is fixedly connected to the inner side of the first support plate. The other end of the second electric telescopic rod is fixedly connected to a third electric telescopic rod. The bottom end of the third electric telescopic rod is fixedly connected to a first lower liquid cylinder.

[0009] A protective cover is fixedly connected to the top end of the housing. A first door panel is rotatably connected to one end of the protective cover. A third support plate is fixedly connected to the top end of the protective cover. A fifth electric telescopic rod is fixedly connected to one end of the third support plate. The bottom end of the fifth electric telescopic rod is fixedly connected to a second lower liquid cylinder. A feeding hopper is communicated with the top end of the protective cover, and the position of the feeding hopper corresponds to the inlet of the weighing mechanism.

[0010] Preferably, the weighing mechanism includes a first motor fixedly connected to the housing. A placing plate is fixedly connected to the end of the main shaft of the first motor. A second flap valve is fixedly connected to the top end of the placing plate. A first feeding pipe is connected to the bottom end of the second flap valve. A weight sensor is fixedly connected to the top end of the valve core of the second flap valve. A first flap valve is fixedly connected to the top end of the second flap valve. A storage shell is fixedly connected to the top end of the first flap valve. A filter screen is rotatably connected to the inner side of the storage shell. A guide hopper is fixedly connected to the top end of the storage shell. A slider is slidably connected to the inner side of the top end of the storage shell. A second motor is fixedly connected to the inner side of the slider. A crushing rod is fixedly connected to the end of the main shaft of the second motor. A lifting assembly is arranged at one end of the slider.

[0011] Preferably, the lifting assembly includes a fixing frame fixedly connected to the storage shell. A third motor is fixedly connected to one end of the fixing frame. A first gear is fixedly connected to the outer side of the main shaft of the third motor, and the main shaft penetrates through the first gear and is fixedly connected to the filter screen. A rack is meshed with one end of the first gear. The outer side of the rack is slidably connected to a guide frame, and the guide frame is fixedly connected to the storage shell. A connecting rod is fixedly connected to the top end of the rack, and the connecting rod is fixedly connected to the slider.

[0012] Preferably, the extraction mechanism includes a first water pump fixedly connected to the housing. The outlet end of the first water pump is connected to a circulation pipe, and the other end of the circulation pipe is connected to the inlet end of the first water pump. A stirring assembly is arranged inside the circulation pipe. One end of the circulation pipe is communicated with a feed pipe arranged in a "Y" shape. A first electromagnetic valve is connected to the outer side of the feed pipe. One end of the circulation pipe is communicated with a bent pipe. The other end of the bent pipe is connected to the liquid separation mechanism. A fourth electromagnetic valve is communicated with the outer side of the bent pipe. A second electromagnetic valve is connected to the outer side of the circulation pipe. A ventilation pipe is communicated with the top end of the circulation pipe. A third electromagnetic valve is connected to the outer side of the ventilation pipe.

[0013] Preferably, the stirring assembly includes a support seat fixedly connected to the housing. A fourth motor is fixedly connected to the inner side of the support seat. The end of the main shaft of the fourth motor is fixedly connected to a turntable. One end of the turntable is rotatably connected to a push rod. The other end of the push rod is rotatably connected to a connection disk. A guide shaft is slidably connected to the inner side of the support seat. The guide shaft is fixedly connected to the connection disk. One end of the connection disk is rotatably connected to an outer cylinder. An inner rod is slidably connected to the inner side of the outer cylinder. One end of the inner rod is fixedly connected to a rotating ball. The outer side of the rotating ball is rotatably connected to a limiting ring, and the limiting ring is fixedly connected to the circulation pipe. One end of the rotating ball in the circulation pipe is fixedly connected to a stirring rod. Baffle rods are fixedly connected to both the top end and the bottom end of the stirring rod.

[0014] Preferably, the liquid separation mechanism includes an outer box body fixedly connected to the elbow pipe. A first shaft seal is fixedly connected to the inner side of the other end of the outer box body. A transition pipe is fixedly connected to the inner side of the first shaft seal. A first shaft seal is also fixedly connected to the outer side of the other end of the transition pipe, and the other end of the transition pipe is rotatably connected to one of the outer box bodies through the first shaft seal. A filter cylinder is rotatably connected to the inner side of the outer box body. End caps are fixedly connected to both ends of the filter cylinder, and one end of the transition pipe is fixedly connected to one of the end caps. A knocking assembly is arranged inside the filter cylinder. A sixth motor is fixedly connected to one end of the outer box body. The end of the main shaft of the sixth motor is fixedly connected to a second gear. A toothed ring is engaged with one end of the second gear, and the toothed ring is fixedly connected to the transition pipe. A filter membrane is fixedly connected to the outer side of the filter cylinder on the right side. Collection frames are rotatably arranged at the bottom ends of the filter cylinder and the filter membrane on the left side, and the collection frames are fixedly connected to the filter cylinder and the outer box body. A sewage discharge pipe is connected to the bottom end of the collection frame, and the outlet end of the sewage discharge pipe is arranged above the waste liquid tank. A fifth solenoid valve is connected to the outer side of the sewage discharge pipe.

[0015] Preferably, the knocking assembly includes a fixed rod fixedly connected to the outer box body. A rotating shaft is fixedly connected to the top end of the fixed rod. A second shaft seal is fixedly connected to the outer side of the rotating shaft, and the rotating shaft is rotatably connected to the end cap through the second shaft seal. A dial rod is fixedly connected to the outer side of the rotating shaft. One end of the dial rod is movably provided with a knocking rod. One end of the knocking rod is rotatably connected to a fixing plate, and the fixing plate is fixedly connected to the filter cylinder. A torsion spring is arranged between the knocking rod and the fixing plate.

[0016] Preferably, the outlet end of the transition pipe on the right side is rotatably connected to a straight pipe through a corresponding first shaft seal. The other end of the straight pipe is fixedly connected to a flexible pipe. The other end of the flexible pipe is fixedly connected to a second blanking pipe. A fifth motor is fixedly connected to one end of the second blanking pipe through a main shaft, and the fifth motor is fixedly connected to the housing.

[0017] Preferably, the adjusting mechanism includes a seventh motor fixedly connected to the main body of the gas chromatograph. The end of the main shaft of the seventh motor is fixedly connected to a connection box. Inside the connection box is fixedly connected a first electric telescopic rod. The top of the first electric telescopic rod is fixedly connected to a connection frame. One end of the connection frame is fixedly connected to a ninth motor. The end of the main shaft of the ninth motor is fixedly connected to a fixing seat. The fixing seat is fixedly connected to the test tube. One end of the connection box is fixedly connected to a sewage pipe, and the outlet end of the sewage pipe is arranged above the waste liquid tank. Inside the connection box is fixedly connected an eighth motor. The end of the main shaft of the eighth motor is fixedly connected to a nozzle.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The automated and high-throughput integrated device for pre-treatment of gas chromatograph samples. Through key components such as the weighing mechanism, extraction mechanism, liquid separation mechanism, adjusting mechanism, first lower liquid cylinder, and second lower liquid cylinder, relying on these components, the device can efficiently and accurately complete a series of pre-treatment operations such as rapid weighing, crushing, and extraction of samples. More prominently, after the sample treatment is completed, the device can automatically execute the cleaning procedure without manual intervention. This highly automated design not only significantly improves the automation level of the device but also greatly enhances the overall detection efficiency, providing strong support for experimental analysis work.

[0020] 2. The automated and high-throughput integrated device for pre-treatment of gas chromatograph samples. Through the extraction mechanism provided, the extraction liquid can circulate in the circulation pipe, which can significantly shorten the extraction time. This method promotes the transfer of the target substance from the organic pollutant to the extraction agent by increasing the contact area and mass transfer efficiency between the organic pollutant and the extraction agent, and shortens the extraction time compared with traditional manual oscillation, stirring, etc.

[0021] 3. The automated and high-throughput integrated device for pre-treatment of gas chromatograph samples. Through the liquid separation mechanism, continuous liquid separation can be carried out without the need to stand for a period of time before liquid separation, thereby improving the liquid separation efficiency. At the same time, when separating liquid through the filter membrane, the collection frame can scrape the dirt on the surface of the filter membrane in real time, such as (adsorption or deposition of organic substances (such as proteins, polysaccharides) on the membrane surface, scaling of inorganic salts (such as calcium carbonate, calcium sulfate) on the membrane surface), so as to ensure that the membrane flux of the filter membrane will not be affected, thereby maintaining the filtration efficiency of the filter membrane all the time and improving the overall processing efficiency.

[0022] 4. An automated and high-throughput integrated device for pre-processing samples in a gas chromatograph. The liquid samples can be weighed by a weighing mechanism. For solid samples, they can be crushed by a crushing rod and then weighed, so as to select an appropriate amount of organic solvent according to the weight of the test samples. After weighing, the filter screen is turned over to facilitate backwashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Figure 1 It is a schematic diagram of the overall structure of the automated and high-throughput integrated device for pre-processing samples in a gas chromatograph of the present invention.

[0025] Figure 2 It is a schematic diagram of the installation structure of the solvent tank of the automated and high-throughput integrated device for pre-processing samples in a gas chromatograph of the present invention.

[0026] Figure 3 It is a schematic diagram of the installation structure of the first motor of the automated and high-throughput integrated device for pre-processing samples in a gas chromatograph of the present invention.

[0027] Figure 4 It is a schematic diagram of the installation structure of the slider of the automated and high-throughput integrated device for pre-processing samples in a gas chromatograph of the present invention.

[0028] Figure 5 It is a schematic diagram of the installation structure of the filter screen of the automated and high-throughput integrated device for pre-processing samples in a gas chromatograph of the present invention.

[0029] Figure 6 It is a schematic diagram of the installation structure of the weight sensor of the automated and high-throughput integrated device for pre-processing samples in a gas chromatograph of the present invention.

[0030] Figure 7 It is a schematic diagram of the installation structure of the circulation pipe of the automated and high-throughput integrated device for pre-processing samples in a gas chromatograph of the present invention.

[0031] Figure 8 It is a schematic diagram of the installation structure of the stirring rod of the automated and high-throughput integrated device for pre-processing samples in a gas chromatograph of the present invention.

[0032] Figure 9Schematic diagram of the installation structure of the transition pipe of the automated and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the present invention.

[0033] Figure 10 Schematic diagram of the installation structure of the second gear of the automated and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the present invention.

[0034] Figure 11 Schematic diagram of the installation structure of the filter cartridge of the automated and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the present invention.

[0035] Figure 12 Schematic diagram of the installation structure of the filter membrane of the automated and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the present invention.

[0036] Figure 13 For the automated and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the present invention Figure 11 Schematic diagram of the structure at position A.

[0037] Figure 14 Schematic diagram of the internal installation structure of the connection box of the automated and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the present invention.

[0038] Figure 15 Schematic diagram of the installation structure of the second liquid discharge cylinder of the automated and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the present invention.

[0039] Figure 16 Schematic diagram of the installation structure of the second water pump of the automated and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the present invention.

[0040] Figure 17 Schematic diagram of the installation structure of the first liquid discharge cylinder of the automated and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the present invention.

[0041] In the figure: 1. weighing mechanism; 101. first motor; 102. placing plate; 103. storage shell; 104. slider; 105. second motor; 106. crushing rod; 107. filter screen; 108. feeding hopper; 109. connecting rod; 110. guiding frame; 111. rack; 112. first gear; 113. third motor; 114. fixing frame; 115. first flap valve; 116. second flap valve; 117. weight sensor; 118. first blanking pipe;

[0042] 2. Extraction mechanism; 201. First water pump; 202. Circulation pipe; 203. Limit ring; 204. Rotating ball; 205. Stirring rod; 206. Stop rod; 207. Inner rod; 208. Outer cylinder; 209. Connecting plate; 210. Support seat; 211. Fourth motor; 212. Turntable; 213. Push rod; 214. Feed pipe; 215. First solenoid valve; 216. Second solenoid valve; 217. Vent pipe; 218. Third solenoid valve; 219. Elbow pipe; 220. Fourth solenoid valve; 221. Guide shaft;

[0043] 3. Liquid separation mechanism; 301. Outer box body; 302. Transition pipe; 303. First shaft seal; 304. End cover; 305. Filter cartridge; 306. Collection frame; 307. Second shaft seal; 308. Rotating shaft; 309. Sewage pipe; 310. Sixth motor; 311. Fifth solenoid valve; 312. Second gear; 313. Tooth ring; 314. Filter membrane; 315. Fixed rod; 316. Poking rod; 317. Fixed plate; 318. Knocking rod; 319. Straight pipe; 320. Hose; 321. Second blanking pipe; 322. Fifth motor;

[0044] 4. Adjusting mechanism; 401. First electric telescopic rod; 402. Connecting frame; 403. Seventh motor; 404. Eighth motor; 405. Nozzle; 406. Connecting box; 407. Ninth motor; 408. Fixed seat; 409. Sewage pipe;

[0045] 5. Gas chromatograph main body; 6. Sampler; 7. Test tube; 8. Shell; 9. Placing rack; 10. Protective cover; 11. First door panel; 12. Second door panel; 13. Hopper; 14. Solvent tank; 15. Drain port; 16. Second electric telescopic rod; 17. First support plate; 18. Third electric telescopic rod; 19. First lower liquid cylinder; 20. Fourth electric telescopic rod; 21. Second support plate; 22. Second water pump; 23. Flow valve; 24. Placing plate; 25. Third support plate; 26. Second lower liquid cylinder; 27. Fifth electric telescopic rod; 28. Waste liquid tank. Detailed implementation manners

[0046] The present invention will be further described below in conjunction with the detailed implementation manners. Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present invention. In order to better illustrate the detailed implementation manners of the present invention, some components in the attached drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. Based on the detailed implementation manners in the present invention, all other detailed implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0047] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, it should be noted in the description of the present invention that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The present invention will be further described below in conjunction with specific embodiments.

[0048] Embodiment

[0049] As Figures 1 - 17 As shown, an automated and high-throughput integrated device for pretreatment of gas chromatography samples includes a gas chromatography main body 5 and a housing 8. One end of the gas chromatography main body 5 is fixedly connected to the housing 8. A sampler 6 is provided at the medicine inlet of the gas chromatography main body 5. The gas chromatography main body 5 and the sampler 6 adopt existing technologies, and their working principles will not be elaborated here. A regulating mechanism 4 is arranged on one side of the sampler 6. A test tube 7 is placed on the top of the regulating mechanism 4. The test tube 7 is used to hold an organic solvent containing organic pollutants for subsequent relevant experimental analysis. A placement rack 9, a weighing mechanism 1 and an extraction mechanism 2 are fixedly connected to the top of the housing 8. One end of the extraction mechanism 2 is communicated with a liquid separation mechanism 3, and the outlet end of the liquid separation mechanism 3 is arranged at the inlet of the test tube 7. A liquid discharge port 15 is opened inside the housing 8. The waste liquid generated by cleaning the weighing mechanism 1 will be discharged into the waste liquid tank 28 through the liquid discharge port 15. One end of the housing 8 is rotatably connected to a second door panel 12. A waste liquid tank 28 is placed inside the housing 8. The liquid discharge port 15 is arranged above the waste liquid tank 28. The waste liquid tank 28 can store the waste liquid generated during equipment cleaning;

[0050] Inside the placement rack 9, there is a solvent tank 14. Multiple solvent tanks 14 containing different types of extractants are placed in the placement rack 9, and each solvent tank 14 is numbered in sequence with Arabic numerals for easy subsequent selection. These solvent tanks 14 can store multiple extractants, and during subsequent extraction, the appropriate extractant can be selected according to the characteristics of different organic pollutants. At the top of the housing 8, there is a second support plate 21 fixedly connected. Inside the second support plate 21, there is a fourth electric telescopic rod 20 fixedly connected. One end of the fourth electric telescopic rod 20 is fixedly connected to a placement plate 24. At the top of the placement plate 24, there is a second water pump 22 fixedly connected. The inlet end of the second water pump 22 is connected to a flow valve 23. The flow valve 23 is connected to the solvent tank 14 through a pipeline. When it is necessary to add an extractant to the feed pipe 214, start the fourth electric telescopic rod 20 to drive the outlet end of the second water pump 22 to move above the feed pipe 214 through the placement plate 24. According to the selected extractant, turn on the corresponding second water pump 22 to inject the extractant into the feed pipe 214. During this process, the flow valve 23 monitors the addition amount of the extractant in real time and accurately controls the addition amount according to the weight of the organic pollutant to ensure the efficiency and effect of extraction.

[0051] At the top of the housing 8, there is a first support plate 17 fixedly connected. Inside the first support plate 17, there is a second electric telescopic rod 16 fixedly connected. The other end of the second electric telescopic rod 16 is fixedly connected to a third electric telescopic rod 18. The bottom end of the third electric telescopic rod 18 is fixedly connected to a first lower liquid cylinder 19. The first lower liquid cylinder 19 is connected to an external water source. If it is necessary to clean the extraction mechanism 2, the positions of the first lower liquid cylinder 19 can be adjusted by means of the second electric telescopic rod 16 and the third electric telescopic rod 18. Specifically, adjustments are made in the horizontal and vertical directions to accurately move the first lower liquid cylinder 19 above the feed pipe 214 of the extraction mechanism 2. Then, cleaning water is introduced into the feed pipe 214 through the first lower liquid cylinder 19 to clean the extraction mechanism 2. The purpose of this is to prevent the residual solution in the extraction mechanism 2 from affecting subsequent extraction experiments and ultimately improve the accuracy of detection.

[0052] A protective cover 10 is fixedly connected to the top end of the housing 8. One end of the protective cover 10 is rotatably connected to a first door panel 11. A third support plate 25 is fixedly connected to the top end of the protective cover 10. One end of the third support plate 25 is fixedly connected to a fifth electric telescopic rod 27. The bottom end of the fifth electric telescopic rod 27 is fixedly connected to a second lower liquid cylinder 26. The top end of the protective cover 10 is communicated with a feeding hopper 13, and the position of the feeding hopper 13 corresponds to the entrance of the weighing mechanism 1. The second lower liquid cylinder 26 is communicated with an external water source. If it is necessary to clean a certain storage shell 103, move the storage shell 103 to be cleaned under the second lower liquid cylinder 26, and then use the fifth electric telescopic rod 27 to bring the second lower liquid cylinder 26 and the feeding hopper 13 together. Pass cleaning water into the feeding hopper 13 through the second lower liquid cylinder 26, and then the cleaning water enters the inside of the storage shell 103 through the corresponding material guiding hopper 108, so as to realize the cleaning of the inside of the storage shell 103.

[0053] As a further improvement of the present invention, as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown in the figure, the weighing mechanism 1 includes a first motor 101 fixedly connected to the housing 8. The end of the main shaft of the first motor 101 is fixedly connected with a placement plate 102. The top of the placement plate 102 is fixedly connected with a second flap valve 116. The bottom of the second flap valve 116 is connected with a first blanking pipe 118. The top of the valve core of the second flap valve 116 is fixedly connected with a weight sensor 117. The top of the second flap valve 116 is fixedly connected with a first flap valve 115. The top of the first flap valve 115 is fixedly connected with a storage shell 103. The number of storage shells 103 can be determined according to the design requirements and can be 8, 16 or even more. The inner side of the storage shell 103 is rotatably connected with a filter screen 107. The top of the storage shell 103 is fixedly connected with a feeding hopper 108. The top surface of the feeding hopper 108 is attached to the inner wall of the housing 8. At the same time, the storage shell 103 can drive the feeding hopper 108 to rotate along the inner wall of the housing 8. When the feeding hopper 108 rotates to the lower part of the discharging hopper 13, the organic pollutant sample inside the discharging hopper 13 will enter the inner side of the storage shell 103 through the feeding hopper 108. The inner side of the top of the storage shell 103 is slidably connected with a slider 104. The inner side of the slider 104 is fixedly connected with a second motor 105. The end of the main shaft of the second motor 105 is fixedly connected with a crushing rod 106. One end of the slider 104 is provided with a lifting assembly;When it is necessary to add an organic pollutant sample to the inside of the storage shell 103, the first motor 101 drives the guide hopper 108 to rotate to the lower part of the discharge hopper 13 through the placement plate 102, the second flap valve 116, the first flap valve 115 and the storage shell 103. Then, the organic pollutant sample is put into the inside of the storage shell 103 through the discharge hopper 13 and the guide hopper 108. An extraction agent database is preset in the operating system, which covers information on various common extraction agents on the market. When adding an organic pollutant sample, the name of the added organic pollutant sample and the name of the required extraction agent can be input through the operation panel of the gas chromatograph main body 5. Once the input and selection of the sample name and extraction agent name are completed, the system will automatically store this information in the internal database and associate it with the current sample processing task to facilitate the subsequent automatic addition of the extraction agent. This intelligent operation method not only improves work efficiency but also reduces the risk of human operation errors, ensuring the accuracy and stability of the entire extraction process. The organic pollutant sample can be liquid or solid. When the organic pollutant is liquid (for example, when detecting organic pollutants in environmental water samples, organic solvents such as n-hexane can be used for liquid-liquid extraction of the water sample, extracting the organic pollutants in the water into the n-hexane phase, and then taking the n-hexane phase for gas chromatography analysis), the liquid organic pollutant sample will directly pass through the filter screen 107 and fall onto the inside of the first flap valve 115. When the organic pollutant sample is solid (commonly used for the extraction of organic pollutants in samples such as soil and plants, such as extracting polycyclic aromatic hydrocarbons from soil), the second motor 105 drives the crushing rod 106 to break the solid organic pollutant. At the same time, the filter screen 107 will screen the broken solid organic pollutant, allowing the qualified solid organic pollutant to pass through the filter screen 107 and fall onto the first flap valve 115. After the solid organic pollutant is broken, its particle size becomes smaller and the specific surface area increases significantly. When in contact with the extraction agent, more pollutant surfaces can directly interact with the extraction agent molecules, increasing the mass transfer area during the extraction process and accelerating the mass transfer rate between the extraction agent and the pollutant, thereby improving the extraction efficiency and achieving extraction equilibrium in a shorter time. Moreover, the mixture formed by the broken solid organic pollutant and the extraction agent usually has better fluidity than before, which is beneficial for transportation in subsequent processing, reducing the operation difficulty and improving the efficiency and stability of the entire processing process. When the first flap valve 115 rotates, the organic pollutant sample will fall onto the weight sensor 117 inside the second flap valve 116. By cooperating with the weight sensor 117, the material weight is accurately measured and the data is fed back to the relevant control system. The addition amount of the extraction agent is controlled by the measured weight of the organic pollutant sample to ensure the extraction efficiency and effect. Then, the second flap valve 116 opens, allowing the organic pollutant sample to enter the inside of the circulation pipe 202 through the feed pipe 214.;

[0054] As a further improvement of the present invention, asFigure 4 and Figure 5 As shown in Figure 5 , the lifting assembly includes a fixing frame 114 fixedly connected to the storage shell 103. One end of the fixing frame 114 is fixedly connected to a third motor 113. The outer side of the main shaft of the third motor 113 is fixedly connected to a first gear 112, and the main shaft passes through the first gear 112 and is fixedly connected to the filter screen 107. One end of the first gear 112 meshes with a rack 111. The outer side of the rack 111 is slidably connected to a guide frame 110, and the guide frame 110 is fixedly connected to the storage shell 103. The top end of the rack 111 is fixedly connected to a connecting rod 109, and the connecting rod 109 is fixedly connected to the slider 104. When it is necessary to clean the inside of the used storage shell 103, start the third motor 113 to drive the first gear 112 and the filter screen 107 to rotate counterclockwise synchronously. During this process, the first gear 112, through the meshing action with the rack 111, pushes the slider 104 upward through the connecting rod 109. Subsequently, the slider 104 drives the second motor 105 connected thereto, and further moves the crushing rod 106 upward. In this way, while the filter screen 107 rotates counterclockwise, the crushing rod 106 moves upward to ensure that the crushing rod 106 does not interfere with the rotation of the filter screen 107. After the filter screen 107 is flipped 180 degrees, inject cleaning water into the inner side of the storage shell 103 through the material guiding hopper 108. The injection of the cleaning water can not only backwash the filter screen 107, but also comprehensively clean the inside of the storage shell 103. At the same time, as the cleaning water flows downward, it can also wash the first flap valve 115, the second flap valve 116, and the first blanking pipe 118. During the flushing, the discharge port of the first blanking pipe 118 needs to be placed above the liquid discharge port 15 so that the sewage is discharged into the waste liquid tank 28 through the liquid discharge port 15.

[0055] As a further improvement of the present invention, as shown in Figure 2 、 Figure 7 and Figure 8As shown, the extraction mechanism 2 includes a first water pump 201 fixedly connected to the housing 8. The outlet end of the first water pump 201 is connected to a circulation pipe 202, and the other end of the circulation pipe 202 is connected to the inlet end of the first water pump 201. A stirring assembly is arranged inside the circulation pipe 202. One end of the circulation pipe 202 communicates with a feed pipe 214 arranged in a "Y" shape. A first electromagnetic valve 215 is connected to the outside of the feed pipe 214. One end of the circulation pipe 202 communicates with an elbow pipe 219, and the other end of the elbow pipe 219 is connected to the liquid separation mechanism 3. A fourth electromagnetic valve 220 communicates with the outside of the elbow pipe 219. When adding organic pollutants and extractant into the inside of the circulation pipe 202, the fourth electromagnetic valve 220 is in a closed state. When the circulation pipe 202 discharges materials outward, the fourth electromagnetic valve 220 is opened. A second electromagnetic valve 216 is connected to the outside of the circulation pipe 202. When the extractant and organic pollutants circulate inside the circulation pipe 202, the second electromagnetic valve 216 is in an open state. When the circulation pipe 202 discharges materials outward, the second electromagnetic valve 216 is in a closed state. The top end of the circulation pipe 202 communicates with a ventilation pipe 217, and a third electromagnetic valve 218 is connected to the outside of the ventilation pipe 217. When adding organic pollutants and extractant into the inside of the circulation pipe 202, the third electromagnetic valve 218 is opened to ensure that the excess gas inside the circulation pipe 202 can be discharged normally. When the organic pollutants and extractant inside the circulation pipe 202 are discharged, the third electromagnetic valve 218 is also in an open state. The organic pollutants flowing out from the first blanking pipe 118 will enter the inside of the circulation pipe 202 through the feed pipe 214. At the same time, the corresponding extractant will also enter the inside of the circulation pipe 202 through the feed pipe 214. After the organic pollutants and extractant enter the inside of the circulation pipe 202, the first electromagnetic valve 215 is closed. Then, the first water pump 201 drives the organic pollutants and extractant inside the circulation pipe 202 to flow reciprocally, so that the organic pollutants and extractant circulate inside the circulation pipe 202, which can significantly shorten the extraction time. This method promotes the transfer of the target substance from the organic pollutants to the extractant by increasing the contact area and mass transfer efficiency between the organic pollutants and the extractant, and shortens the extraction time compared with traditional methods such as manual oscillation and stirring.

[0056] As a further improvement of the present invention, as Figure 7 and Figure 8As shown in the figure, the stirring assembly includes a support base 210 fixedly connected to the housing 8. A fourth motor 211 is fixedly connected to the inner side of the support base 210. The end of the main shaft of the fourth motor 211 is fixedly connected to a turntable 212. One end of the turntable 212 is rotatably connected to a push rod 213, and the other end of the push rod 213 is rotatably connected to a connecting disc 209. A guide shaft 221 is slidably connected to the inner side of the support base 210, and the guide shaft 221 is fixedly connected to the connecting disc 209. One end of the connecting disc 209 is rotatably connected to an outer cylinder 208. An inner rod 207 is slidably connected to the inner side of the outer cylinder 208. One end of the inner rod 207 is fixedly connected to a rotating ball 204. A limiting ring 203 is rotatably connected to the outer side of the rotating ball 204, and the limiting ring 203 is fixedly connected to the circulation pipe 202. A sealing gasket is provided between the limiting ring 203 and the rotating ball 204 to ensure the sealing between the rotating ball 204 and the limiting ring 203. One end of the rotating ball 204 located in the circulation pipe 202 is fixedly connected to a stirring rod 205. The arc of the stirring rod 205 is the same as the arc of the circulation pipe 202 to ensure that the stirring rod 205 can stir normally inside the circulation pipe 202. The top and bottom of the stirring rod 205 are both fixedly connected to a stop rod 206. When the organic pollutants and the extractant circulate inside the circulation pipe 202, the fourth motor 211 drives the turntable 212 to rotate reciprocally. Then the turntable 212 drives the connecting disc 209 to move reciprocally in the vertical direction through the push rod 213. Then the connecting disc 209 drives the rotating ball 204 to swing reciprocally inside the limiting ring 203 through the outer cylinder 208 and the inner rod 207. Then the rotating ball 204 drives the stirring rod 205 and the stop rod 206 to stir reciprocally inside the circulation pipe 202. The mixing effect during the extraction process is enhanced through stirring. At the same time, stirring can also prevent the solid organic pollutants from precipitating inside the circulation pipe 202.

[0057] As a further improvement of the present invention, as Figure 2 , Figure 7 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13As shown in the figure, the liquid separation mechanism 3 includes an outer box body 301 fixedly connected to the elbow pipe 219. At the inner side of the other end of the outer box body 301, a first shaft seal 303 is fixedly connected. Inside the first shaft seal 303, a transition pipe 302 is fixedly connected. At the outer side of the other end of the transition pipe 302, a first shaft seal 303 is also fixedly connected. And the other end of the transition pipe 302 is rotatably connected to an outer box body 301 through the first shaft seal 303. Inside the outer box body 301, a filter cylinder 305 is rotatably connected. At both ends of the filter cylinder 305, end caps 304 are fixedly connected. And one end of the transition pipe 302 is fixedly connected to one of the end caps 304. The end cap 304 on the right side is provided with through holes for the liquid to flow through. Inside the filter cylinder 305, a knocking component is arranged. At one end of the outer box body 301, a sixth motor 310 is fixedly connected. At the end of the main shaft of the sixth motor 310, a second gear 312 is fixedly connected. One end of the second gear 312 meshes with a toothed ring 313. And the toothed ring 313 is fixedly connected to the transition pipe 302. At the outer side of the filter cylinder 305 on the right side, a filter membrane 314 is fixedly connected. The filter membrane 314 is a hydrophobic membrane (such as PTFE membrane), which only allows the organic phase to pass through. At the bottom ends of the filter cylinder 305 and the filter membrane 314 on the left side, collection frames 306 are rotatably arranged. And the collection frames 306 are fixedly connected to the outer box body 301 of the filter cylinder 305. At the bottom end of the collection frame 306, a sewage discharge pipe 309 is connected. And the outlet end of the sewage discharge pipe 309 is arranged above the waste liquid tank 28. At the outer side of the sewage discharge pipe 309, a fifth solenoid valve 311 is connected. Regarding the judgment of the completion of extraction, the method closely related to the operating system is as follows: First, various sensors are installed at specific positions of the circulation pipe 202, such as a concentration sensor, a color sensor, or a conductivity sensor, etc. These sensors establish a real-time data transmission connection with the operating system of the gas chromatograph main body 5, and the monitored physical and chemical parameters such as the solution concentration, color, and conductivity are real-time fed back to the data analysis module of the operating system. This module has preset extraction equilibrium indicators. When the sensor data remains stable for a period of time and all parameters meet the preset extraction equilibrium indicators, the operating system determines that the extraction is completed and sends instructions to relevant executing components;Or secondly, the operating system stores the established extraction process information, which includes the estimated extraction time obtained based on previous experimental or empirical data. When the operator starts the extraction process, they input the corresponding extraction process number through the operation panel. The operating system automatically calls the estimated extraction time data of this process and starts the internal timing module. When the time displayed by the timing module reaches the estimated extraction time, the operating system considers the extraction to be completed and also sends subsequent operation instructions to the relevant execution components. After the extraction is completed, the fourth solenoid valve 220, the second solenoid valve 216, and the third solenoid valve 218 will be automatically opened, so that the extracted solution inside the circulation pipe 202 enters the inside of the outer box body 301 through the elbow pipe 219. The extracted solution is first filtered through the filter cartridge 305, and then the filtered solution enters the inside of the next outer box body 301 through the transition pipe 302. The extracted solution is separated through the filter membrane 314, and the organic phase enters the inside of the straight pipe 319 through the corresponding transition pipe 302, and then enters the inside of the test tube 7 through the hose 320 and the second discharge pipe 321 and is stored in the test tube 7, facilitating the sampler 6 to sequentially extract the organic phase in the test tube 7 for detection. And through the functions of the filter cartridge 305 and the filter membrane 314, liquid separation can be continuously carried out without the need to stand for a period of time before liquid separation, thus improving the efficiency of liquid separation.;

[0058] As a further improvement of the present invention, as Figure 9 , Figure 10 , Figure 11 and Figure 12As shown in the figure, the knocking component includes a fixing rod 315 fixedly connected to the outer box body 301. The top end of the fixing rod 315 is fixedly connected to a rotating shaft 308. The outer side of the rotating shaft 308 is fixedly connected to a second shaft seal 307, and the rotating shaft 308 is rotatably connected to the end cover 304 through the second shaft seal 307. The outer side of the rotating shaft 308 is fixedly connected to a dial rod 316. One end of the dial rod 316 is movably provided with a knocking rod 318. One end of the knocking rod 318 is rotatably connected to a fixing plate 317, and the fixing plate 317 is fixedly connected to the filter cylinder 305. A torsion spring is arranged between the knocking rod 318 and the fixing plate 317. When the extracted solution passes through the filter cylinder 305 and the filter membrane 314 in sequence, the second gear 312 drives the transition pipe 302 to rotate together through the toothed ring 313, so that the transition pipe 302 drives the filter cylinder 305 and the filter membrane 314 to rotate clockwise simultaneously through the corresponding end cover 304, so that the filter cylinder 305 drives the knocking rod 318 to pass through the dial rod 316 through the fixing plate 317. When the knocking rod 318 just contacts the dial rod 316, the knocking rod 318 will separate from the filter cylinder 305 under the limiting action of the dial rod 316. When the knocking rod 318 crosses the dial rod 316, the knocking rod 318 will knock the filter cylinder 305 under the torsion force of the torsion spring. The mechanical impact force generated by the rotation of the knocking rod 318 on the filter cylinder 305 can destroy the adhesion force between foreign matters and the surfaces of the filter cylinder 305 and the filter membrane 314. Some loose particulate or flaky foreign matters are easy to fall off from the surfaces of the filter cylinder 305 and the filter membrane 314 under the action of the knocking force, so as to achieve the purpose of reducing the amount of foreign matter adhesion. The rotation of the knocking rod 318 not only directly knocks, but also drives the fluid near the filter cylinder 305 and the filter membrane 314 to generate disturbance. The movement of this fluid helps to wash the surfaces of the filter cylinder 305 and the filter membrane 314. Cooperating with the mechanical action of knocking, it can more effectively remove some sticky or slightly stronger adhesion foreign matters. At the same time, the collection frame 306 will also scrape the foreign matters on the surfaces of the corresponding filter cylinder 305 and the filter membrane 314, so that the foreign matters stay temporarily inside the collection frame 306. The foreign matters on the surface of the filter membrane 314 can be scraped in real time through the collection frame 306, so as to ensure that the membrane flux of the filter membrane 314 will not be affected, so as to keep the filtration efficiency of the filter membrane 314 all the time and improve the overall treatment efficiency.

[0059] As a further improvement of the present invention, as Figure 7As shown, the outlet end of the transition pipe 302 on the right is rotatably connected to a straight pipe 319 through a corresponding first shaft seal 303. The other end of the straight pipe 319 is fixedly connected to a flexible pipe 320. The other end of the flexible pipe 320 is fixedly connected to a second blanking pipe 321. One end of the second blanking pipe 321 is fixedly connected to a fifth motor 322 through a main shaft, and the fifth motor 322 is fixedly connected to the housing 8. During the cleaning of the cleaning circulation pipe 202, the cleaning water will also clean other components inside the outer box 301, such as the outer box 301, the filter cylinder 305, the filter membrane 314, the collection frame 306, etc. Part of the sewage generated by the cleaning will be discharged through the collection frame 306, the sewage discharge pipe 309, and the fifth solenoid valve 311. Part of it will also be discharged into the inner side of the waste liquid tank 28 through the second blanking pipe 321. At the same time, the fifth motor 322 drives the second blanking pipe 321 to rotate towards the waste liquid tank 28, so that the liquid outlet of the second blanking pipe 321 is above the waste liquid tank 28.

[0060] As a further improvement of the present invention, as Figure 2 and Figure 14 shown, the adjustment mechanism 4 includes a seventh motor 403 fixedly connected to the gas chromatograph main body 5. The end of the main shaft of the seventh motor 403 is fixedly connected to a connection box 406. A first electric telescopic rod 401 is fixedly connected inside the connection box 406. The top end of the first electric telescopic rod 401 is fixedly connected to a connection frame 402. One end of the connection frame 402 is fixedly connected to a ninth motor 407. The end of the main shaft of the ninth motor 407 is fixedly connected to a fixing seat 408. The fixing seat 408 is fixedly connected to the test tube 7. One end of the connection box 406 is fixedly connected to a sewage pipe 409, and the outlet end of the sewage pipe 409 is arranged above the waste liquid tank 28. An eighth motor 404 is fixedly connected inside the connection box 406. The end of the main shaft of the eighth motor 404 is fixedly connected to a spray head 405. The spray head 405 is communicated with an external water source. When the test tube 7 is in normal use, the test tube 7 extends out of the inside of the connection box 406. When it is necessary to clean the used test tube 7, the first electric telescopic rod 401 pulls the test tube 7 into the inside of the connection box 406 through the connection frame 402 and the fixing seat 408. At the same time, the ninth motor 407 drives the fixing seat 408 and the test tube 7 to rotate 90 degrees, so that the test tube 7 is in a horizontal state. Then the eighth motor 404 drives the spray head 405 to rotate, so that the spray head 405 faces the test tube 7. Then the spray head 405 can spray water into the inside of the test tube 7 for cleaning, and the sewage is discharged from the inside of the sewage pipe 409. When the eighth motor 404 works, it first rotates counterclockwise by 360 degrees, and then rotates clockwise by 360 degrees to ensure that the water pipe connected to the spray head 405 will not be entangled. The seventh motor 403 also first rotates counterclockwise by 360 degrees, and then rotates clockwise by 360 degrees, so that the organic phase to be detected rotates below the injector 6. The injector 6 extracts the organic phase and inputs it into the inside of the gas chromatograph main body 5 for detection by the gas chromatograph main body 5.

[0061] The above is the preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the protection scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated and high-throughput integrated device for sample pretreatment before detection by a gas chromatograph, comprising a gas chromatograph main body (5) and a housing (8), characterized in that: One end of the gas chromatograph main body (5) is fixedly connected to a housing (8). An injector (6) is provided at the medicine inlet of the gas chromatograph main body (5). A regulating mechanism (4) is arranged on one side of the injector (6). A test tube (7) is placed on the top end of the regulating mechanism (4). A placement rack (9), a weighing mechanism (1) and an extraction mechanism (2) are fixedly connected to the top end of the housing (8). One end of the extraction mechanism (2) is communicated with a liquid separation mechanism (3), and the outlet end of the liquid separation mechanism (3) is arranged at the inlet of the test tube (7). A liquid discharge port (15) is formed inside the housing (8). A second door panel (12) is rotatably connected to one end of the housing (8). A waste liquid tank (28) is placed inside the housing (8). The liquid discharge port (15) is arranged above the waste liquid tank (28). A solvent tank (14) is placed inside the placement rack (9). A second support plate (21) is fixedly connected to the top end of the housing (8). A fourth electric telescopic rod (20) is fixedly connected inside the second support plate (21). A placement plate (24) is fixedly connected to one end of the fourth electric telescopic rod (20). A second water pump (22) is fixedly connected to the top end of the placement plate (24). The inlet end of the second water pump (22) is connected to a flow valve (23). The flow valve (23) is communicated with the solvent tank (14) through a pipeline. A first support plate (17) is fixedly connected to the top end of the housing (8). A second electric telescopic rod (16) is fixedly connected inside the first support plate (17). A third electric telescopic rod (18) is fixedly connected to the other end of the second electric telescopic rod (16). A first lower liquid cylinder (19) is fixedly connected to the bottom end of the third electric telescopic rod (18). A protective cover (10) is fixedly connected to the top end of the housing (8). A first door panel (11) is rotatably connected to one end of the protective cover (10). A third support plate (25) is fixedly connected to the top end of the protective cover (10). A fifth electric telescopic rod (27) is fixedly connected to one end of the third support plate (25). A second lower liquid cylinder (26) is fixedly connected to the bottom end of the fifth electric telescopic rod (27). A feeding hopper (13) is communicated with the top end of the protective cover (10), and the position of the feeding hopper (13) corresponds to the inlet of the weighing mechanism (1).

2. The automated and high-throughput integrated device for sample pretreatment before detection of a gas chromatograph according to claim 1, characterized in that: The weighing mechanism (1) includes a first motor (101) fixedly connected to the housing (8). The end of the main shaft of the first motor (101) is fixedly connected to a placement plate (102). The top of the placement plate (102) is fixedly connected to a second flap valve (116). The bottom of the second flap valve (116) is connected to a first feed pipe (118). The top of the valve core of the second flap valve (116) is fixedly connected to a weight sensor (117). The top of the second flap valve (116) is fixedly connected to a first flap valve (115). The top of the first flap valve (115) is fixedly connected to a storage shell (103). The inner side of the storage shell (103) is rotatably connected to a filter screen (107). The top of the storage shell (103) is fixedly connected to a feed hopper (108). The inner side of the top of the storage shell (103) is slidably connected to a slider (104). The inner side of the slider (104) is fixedly connected to a second motor (105). The end of the main shaft of the second motor (105) is fixedly connected to a crushing rod (106). One end of the slider (104) is provided with a lifting component.

3. The automated and high-throughput integrated device for sample pretreatment before detection by a gas chromatograph according to claim 2, wherein: The lifting component includes a fixed frame (114) fixedly connected to the storage shell (103). One end of the fixed frame (114) is fixedly connected to a third motor (113). The outer side of the main shaft of the third motor (113) is fixedly connected to a first gear (112), and the main shaft passes through the first gear (112) and is fixedly connected to the filter screen (107). One end of the first gear (112) meshes with a rack (111). The outer side of the rack (111) is slidably connected to a guide frame (110), and the guide frame (110) is fixedly connected to the storage shell (103). The top of the rack (111) is fixedly connected to a connecting rod (109), and the connecting rod (109) is fixedly connected to the slider (104).

4. The automated and high-throughput integrated device for pre-treatment of gas chromatograph samples before detection according to claim 1, characterized in that: The extraction mechanism (2) includes a first water pump (201) fixedly connected to the housing (8). The outlet end of the first water pump (201) is connected to a circulation pipe (202), and the other end of the circulation pipe (202) is connected to the inlet end of the first water pump (201). A stirring component is arranged inside the circulation pipe (202). One end of the circulation pipe (202) communicates with a feed pipe (214) arranged in a "Y" shape. The outer side of the feed pipe (214) is connected to a first solenoid valve (215). One end of the circulation pipe (202) communicates with an elbow pipe (219). The other end of the elbow pipe (219) is connected to a liquid separation mechanism (3). The outer side of the elbow pipe (219) communicates with a fourth solenoid valve (220). The outer side of the circulation pipe (202) is connected to a second solenoid valve (216). The top of the circulation pipe (202) communicates with a ventilation pipe (217). The outer side of the ventilation pipe (217) is connected to a third solenoid valve (218).

5. The automated and high-throughput integrated device for pretreatment of gas chromatograph samples before detection according to claim 4, wherein: The stirring assembly includes a support base (210) fixedly connected to the housing (8). A fourth motor (211) is fixedly connected to the inner side of the support base (210). The end of the main shaft of the fourth motor (211) is fixedly connected to a turntable (212). One end of the turntable (212) is rotatably connected to a push rod (213). The other end of the push rod (213) is rotatably connected to a connection disk (209). A guide shaft (221) is slidably connected to the inner side of the support base (210). The guide shaft (221) is fixedly connected to the connection disk (209). One end of the connection disk (209) is rotatably connected to an outer cylinder (208). An inner rod (207) is slidably connected to the inner side of the outer cylinder (208). One end of the inner rod (207) is fixedly connected to a rotating ball (204). A limiting ring (203) is rotatably connected to the outer side of the rotating ball (204), and the limiting ring (203) is fixedly connected to the circulation pipe (202). One end of the rotating ball (204) located in the circulation pipe (202) is fixedly connected to a stirring rod (205). Stop rods (206) are fixedly connected to both the top end and the bottom end of the stirring rod (205).

6. The automated and high-throughput integrated device for pretreatment of gas chromatograph samples before detection according to claim 4, wherein: The liquid separation mechanism (3) includes an outer box body (301) fixedly connected to the elbow pipe (219). A first shaft seal (303) is fixedly connected to the inner side of the other end of the outer box body (301). A transition pipe (302) is fixedly connected to the inner side of the first shaft seal (303). A first shaft seal (303) is also fixedly connected to the outer side of the other end of the transition pipe (302), and the other end of the transition pipe (302) is rotatably connected to one of the outer box bodies (301) through the first shaft seal (303). A filter cylinder (305) is rotatably connected to the inner side of the outer box body (301). End covers (304) are fixedly connected to both ends of the filter cylinder (305), and one end of the transition pipe (302) is fixedly connected to one of the end covers (304). A knocking assembly is arranged inside the filter cylinder (305). A sixth motor (310) is fixedly connected to one end of the outer box body (301). The end of the main shaft of the sixth motor (310) is fixedly connected to a second gear (312). A toothed ring (313) is engaged with one end of the second gear (312), and the toothed ring (313) is fixedly connected to the transition pipe (302). A filter membrane (314) is fixedly connected to the outer side of the filter cylinder (305) on the right side. Collection frames (306) are rotatably arranged at the bottom ends of the filter cylinder (305) and the filter membrane (314) on the left side, and the collection frames (306) are fixedly connected to the outer box body (301) of the filter cylinder (305). A sewage discharge pipe (309) is connected to the bottom end of the collection frame (306), and the outlet end of the sewage discharge pipe (309) is arranged above the waste liquid tank (28). A fifth solenoid valve (311) is connected to the outer side of the sewage discharge pipe (309).

7. The automated and high-throughput integrated device for pre-treatment of gas chromatograph samples before detection according to claim 6, characterized in that: The knocking component includes a fixed rod (315) fixedly connected to the outer box body (301). The top end of the fixed rod (315) is fixedly connected with a rotating shaft (308). The outer side of the rotating shaft (308) is fixedly connected with a second shaft seal (307), and the rotating shaft (308) is rotatably connected to the end cover (304) through the second shaft seal (307). The outer side of the rotating shaft (308) is fixedly connected with a dial rod (316). One end of the dial rod (316) is movably provided with a knocking rod (318). One end of the knocking rod (318) is rotatably connected to a fixing plate (317), and the fixing plate (317) is fixedly connected with the filter cartridge (305). A torsion spring is arranged between the knocking rod (318) and the fixing plate (317).

8. The automated and high-throughput integrated device for pretreatment of gas chromatograph samples before detection according to claim 6, characterized in that: The outlet end of the transition pipe (302) on the right is rotatably connected with a straight pipe (319) through a corresponding first shaft seal (303). The other end of the straight pipe (319) is fixedly connected with a flexible pipe (320). The other end of the flexible pipe (320) is fixedly connected with a second blanking pipe (321). One end of the second blanking pipe (321) is fixedly connected with a fifth motor (322) through a main shaft, and the fifth motor (322) is fixedly connected with the housing (8).

9. The automated and high-throughput integrated device for pretreatment of gas chromatograph samples before detection according to claim 1, wherein: The adjusting mechanism (4) includes a seventh motor (403) fixedly connected to the gas chromatograph main body (5). The end of the main shaft of the seventh motor (403) is fixedly connected with a connecting box (406). The inner side of the connecting box (406) is fixedly connected with a first electric telescopic rod (401). The top end of the first electric telescopic rod (401) is fixedly connected with a connecting frame (402). One end of the connecting frame (402) is fixedly connected with a ninth motor (407). The end of the main shaft of the ninth motor (407) is fixedly connected with a fixing seat (408). The fixing seat (408) is fixedly connected with the test tube (7). One end of the connecting box (406) is fixedly connected with a sewage pipe (409), and the outlet end of the sewage pipe (409) is arranged above the waste liquid tank (28). The inner side of the connecting box (406) is fixedly connected with an eighth motor (404). The end of the main shaft of the eighth motor (404) is fixedly connected with a spray head (405).

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