Automated, high-throughput integrated device for sample preparation prior to detection by gas chromatograph

Abstract

The application discloses an automatic and high-throughput integrated device for sample pretreatment of a gas chromatograph, relates to the technical field of detection equipment, and 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, one end of the extraction mechanism is communicated with a liquid separation mechanism, a liquid discharge port is arranged in the inner side of the shell, one end of the shell is rotationally connected with a second door plate, and a waste liquid tank is arranged in the inner side of the shell. The device can efficiently and accurately complete a series of pretreatment operations such as rapid weighing, crushing and extraction of samples, and more prominently, after sample treatment is completed, the device can automatically execute a cleaning program without manual intervention. This highly automated design not only significantly improves the automation level of the device, but also greatly improves the overall detection efficiency, and provides strong support for experimental analysis work.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of detection equipment, in particular to an automatic high-throughput integrated device for sample pretreatment of a gas chromatograph. BACKGROUND

[0002] The gas chromatograph is an instrument for qualitatively and quantitatively analyzing complex mixtures of multiple components by using chromatographic separation technology and detection technology. The gas chromatograph can be usually used for analyzing soil organic matters, such as volatile organic matters, organic chlorine, organic phosphorus, polycyclic aromatic hydrocarbons and phthalate esters, which are heat stable and have a boiling point not higher than 500 DEG C.

[0003] Before the sample is processed by the gas chromatograph, the sample needs to be extracted by a common extraction method such as liquid-liquid extraction and Soxhlet extraction. The existing gas chromatograph does not have a mechanism for pretreatment of the sample before detection, and the sample needs to be manually processed before detection. Manual processing has low working 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, the automatic high-throughput integrated device for sample pretreatment of a gas chromatograph is proposed to solve the above problems. SUMMARY

[0004] The purpose of the application is to provide an automatic high-throughput integrated device for sample pretreatment of a gas chromatograph to solve the problems in the background art.

[0005] To achieve the above purpose, the technical scheme adopted by the application is as follows:

[0006] The automatic high-throughput integrated device for sample pretreatment of a gas chromatograph comprises a gas chromatograph main body and a shell, one end of the gas chromatograph main body is fixedly connected with the shell, a sample inlet of the gas chromatograph main body is provided with a sample injector, one side of the sample injector is provided with an adjusting mechanism, a test tube is placed at the top end of the adjusting mechanism, the top end of the shell is fixedly connected with a placing rack, a weighing mechanism and an extraction mechanism, 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 formed in the inner side of the shell, one end of the shell is rotatably connected with a second door plate, a waste liquid tank is placed in the inner side of the shell, and the liquid discharge port is arranged above the waste liquid tank.

[0007] The inner side of the placing rack is provided with a solvent tank, the top end of the shell is fixedly connected with a second support plate, the inner side of the second support plate is fixedly connected with a fourth electric telescopic rod, one end of the fourth electric telescopic rod is fixedly connected with a placing plate, the top end of the placing plate is fixedly connected with a second water pump, the inlet end of the second water pump is connected with a flow valve, and the flow valve is communicated with the solvent tank through a pipeline.

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

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

[0010] Preferably, the weighing mechanism comprises a first motor fixedly connected with the shell, a placement disc fixedly connected with the main shaft of the first motor, a second flap valve fixedly connected with the top end of the placement disc, a first discharge pipe connected with the bottom end of the second flap valve, a weight sensor fixedly connected with the valve core of the second flap valve, a first flap valve fixedly connected with the top end of the second flap valve, a storage shell fixedly connected with the top end of the first flap valve, a filter screen rotatably connected with the inner side of the storage shell, a guide hopper fixedly connected with the top end of the storage shell, a sliding block slidably connected with the top end of the storage shell, a second motor fixedly connected with the inner side of the sliding block, a crushing rod fixedly connected with the main shaft of the second motor, and a lifting assembly arranged at one end of the sliding block.

[0011] Preferably, the lifting assembly comprises a fixing frame fixedly connected with the storage shell, a third motor fixedly connected with one end of the fixing frame, a first gear fixedly connected with the outer side of the main shaft of the third motor and penetrating through the first gear to be fixedly connected with the filter screen, a rack engaged with one end of the first gear, a guide frame slidably connected with the outer side of the rack and fixedly connected with the storage shell, a connecting rod fixedly connected with the top end of the rack and the sliding block.

[0012] Preferably, the extraction mechanism comprises a first water pump fixedly connected with the shell, a circulating pipe connected with the outlet end of the first water pump, the other end of the circulating pipe connected with the inlet end of the first water pump, a stirring assembly arranged on the inner side of the circulating pipe, a feed pipe in the shape of "Y" communicated with one end of the circulating pipe, a first electromagnetic valve connected with the outer side of the feed pipe, a bend pipe communicated with one end of the circulating pipe, the other end of the bend pipe connected with the liquid separation mechanism, a fourth electromagnetic valve communicated with the outer side of the bend pipe, a second electromagnetic valve connected with the outer side of the circulating pipe, a breather pipe communicated with the top end of the circulating pipe, and a third electromagnetic valve connected with the outer side of the breather pipe.

[0013] Preferably, the stirring assembly comprises a support seat fixedly connected with the shell, a fourth motor fixedly connected at the inner side of the support seat, a rotating disc fixedly connected at the main shaft end of the fourth motor, a push rod rotatably connected at one end of the rotating disc, a connecting disc rotatably connected at the other end of the push rod, a guide shaft slidably connected at the inner side of the support seat, the connecting disc fixedly connected with the guide shaft, an outer cylinder rotatably connected at one end of the connecting disc, an inner rod slidably connected at the inner side of the outer cylinder, a rotating ball fixedly connected at one end of the inner rod, a limiting ring rotatably connected at the outer side of the rotating ball, the limiting ring fixedly connected with the circulating pipe, a stirring rod fixedly connected at one end of the rotating ball located at the circulating pipe, and a blocking rod fixedly connected at the top end and the bottom end of the stirring rod.

[0014] Preferably, the liquid separation mechanism comprises an outer box body fixedly connected with the elbow, a first shaft seal fixedly connected at the other end of the inner side of the outer box body, a transition pipe fixedly connected at the inner side of the first shaft seal, another first shaft seal fixedly connected at the other end of the outer side of the transition pipe, the other end of the transition pipe rotatably connected with one of the outer box bodies through the first shaft seal, a filter cylinder rotatably connected at the inner side of the outer box body, end covers fixedly connected at both ends of the filter cylinder, one end of the transition pipe fixedly connected with one of the end covers, a knocking assembly arranged at the inner side of the filter cylinder, a sixth motor fixedly connected at one end of the outer box body, a second gear fixedly connected at the main shaft end of the sixth motor, a tooth ring engaged at one end of the second gear, the tooth ring fixedly connected with the transition pipe, a filter membrane fixedly connected at the outer side of the filter cylinder located at the right side, a collecting frame rotatably arranged at the bottom end of the filter cylinder located at the left side and the filter membrane, the collecting frame fixedly connected with the filter cylinder outer box body, a blowdown pipe connected at the bottom end of the collecting frame, the outlet end of the blowdown pipe arranged above the waste liquid tank, and a fifth electromagnetic valve connected at the outer side of the blowdown pipe.

[0015] Preferably, the knocking assembly comprises a fixed rod fixedly connected with the outer box body, a rotating shaft fixedly connected at the top end of the fixed rod, a second shaft seal fixedly connected at the outer side of the rotating shaft, the rotating shaft rotatably connected with the end cover through the second shaft seal, a push rod fixedly connected at the outer side of the rotating shaft, a knocking rod movably arranged at one end of the push rod, a fixed plate rotatably connected at one end of the knocking rod, the fixed plate fixedly connected with the filter cylinder, and a torsional spring arranged between the knocking rod and the fixed plate.

[0016] Preferably, the outlet end of the transition pipe located at the right side is rotatably connected with a straight pipe through a corresponding first shaft seal, the other end of the straight pipe is fixedly connected with a hose, the other end of the hose is fixedly connected with a second downpipe, one end of the second downpipe is fixedly connected with a fifth motor through a main shaft, and the fifth motor is fixedly connected with the shell.

[0017] Preferably, the adjusting mechanism comprises a seventh motor fixedly connected with the gas chromatograph body, a connecting box fixedly connected at the end of the main shaft of the seventh motor, a first electric telescopic rod fixedly connected to the inner side of the connecting box, a connecting frame fixedly connected to the top end of the first electric telescopic rod, a ninth motor fixedly connected to one end of the connecting frame, a fixing seat fixedly connected to the end of the main shaft of the ninth motor, and a test tube fixedly connected with the fixing seat, a sewage pipe fixedly connected to one end of the connecting box, and the outlet end of the sewage pipe is arranged above the waste liquid tank, an eighth motor fixedly connected to the inner side of the connecting box, and a spray head fixedly connected to the end of the main shaft of the eighth motor.

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

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

[0020] 2. The automatic and high-throughput integrated device for sample pretreatment of a gas chromatograph, through the extraction mechanism, the extraction liquid circulates in the circulation pipe, which can significantly speed up the extraction time. This method increases the contact area and mass transfer efficiency of organic pollutants and extractants, promotes the transfer of target substances from organic pollutants to extractants, and shortens the extraction time compared with traditional manual shaking and stirring methods.

[0021] 3. The automatic and high-throughput integrated device for sample pretreatment of a gas chromatograph, through the liquid separation mechanism, continuous liquid separation can be performed without the need for standing for a period of time before liquid separation, thereby improving the efficiency of liquid separation. At the same time, when the liquid separation is performed through the filter membrane, the collection frame can scrape the dirt on the surface of the filter membrane in real time, such as organic matter (e.g. protein, polysaccharide) adsorbed or deposited on the membrane surface, inorganic salt (e.g. calcium carbonate, calcium sulfate) scaling on the membrane surface, thereby ensuring that the membrane flux of the filter membrane is not affected, thereby maintaining the filtration efficiency of the filter membrane and improving the overall processing efficiency.

[0022] 4. An automated, high-throughput integrated device for sample pretreatment in gas chromatographs. It can weigh liquid samples via a weighing mechanism, and for solid samples, it can be crushed by a crusher before weighing. This allows for the selection of an appropriate amount of organic solvent based on the weight of the sample. After weighing, the filter screen is flipped over for easy backwashing. Attached Figure Description

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Figure 1 This is a schematic diagram of the overall structure of the automated, high-throughput integrated device for sample pretreatment in gas chromatographs according to the present invention.

[0025] Figure 2 This is a schematic diagram of the solvent tank installation structure of the automated, high-throughput integrated device for sample pretreatment in gas chromatograph according to the present invention.

[0026] Figure 3 This is a schematic diagram of the installation structure of the first motor in the automated, high-throughput integrated device for sample pretreatment of a gas chromatograph according to the present invention.

[0027] Figure 4 This is a schematic diagram of the slider installation structure of the automated, high-throughput integrated device for sample pretreatment in gas chromatograph according to the present invention.

[0028] Figure 5 This is a schematic diagram of the filter installation structure of the automated, high-throughput integrated device for sample pretreatment in gas chromatograph according to the present invention.

[0029] Figure 6 This is a schematic diagram of the installation structure of the weight sensor in the automated, high-throughput integrated device for sample pretreatment of a gas chromatograph according to the present invention.

[0030] Figure 7 This is a schematic diagram of the installation structure of the circulation tube of the automated, high-throughput integrated device for sample pretreatment in gas chromatograph according to the present invention.

[0031] Figure 8 This is a schematic diagram of the installation structure of the stirring rod in the automated, high-throughput integrated device for sample pretreatment of a gas chromatograph according to the present invention.

[0032] Figure 9The installation structure diagram of the transition pipe of the automatic and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the application.

[0033] Figure 10 The installation structure diagram of the second gear of the automatic and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the application.

[0034] Figure 11 The installation structure diagram of the filter cartridge of the automatic and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the application.

[0035] Figure 12 The installation structure diagram of the filter membrane of the automatic and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the application.

[0036] Figure 13 The installation structure diagram of the automatic and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the application Figure 11 The structure diagram of A of the application.

[0037] Figure 14 The internal installation structure diagram of the connection box of the automatic and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the application.

[0038] Figure 15 The installation structure diagram of the second lower liquid cylinder of the automatic and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the application.

[0039] Figure 16 The installation structure diagram of the second water pump of the automatic and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the application.

[0040] Figure 17 The installation structure diagram of the first lower liquid cylinder of the automatic and high-throughput integrated device for sample pretreatment before detection of the gas chromatograph of the application.

[0041] In the figure: 1, weighing mechanism; 101, first motor; 102, placing disc; 103, storage shell; 104, sliding block; 105, second motor; 106, crushing rod; 107, filter screen; 108, material guide hopper; 109, connecting rod; 110, guide frame; 111, rack; 112, first gear; 113, third motor; 114, fixed frame; 115, first flap valve; 116, second flap valve; 117, weight sensor; 118, first discharging pipe;

[0042] 2, extraction mechanism; 201, first water pump; 202, circulation pipe; 203, limiting ring; 204, rotating ball; 205, stirring rod; 206, blocking rod; 207, inner rod; 208, outer cylinder; 209, connecting disc; 210, support seat; 211, fourth motor; 212, rotating disc; 213, push rod; 214, feeding pipe; 215, first electromagnetic valve; 216, second electromagnetic valve; 217, air pipe; 218, third electromagnetic valve; 219, elbow pipe; 220, fourth electromagnetic valve; 221, guide shaft;

[0043] 3, 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, blowdown pipe; 310, sixth motor; 311, fifth electromagnetic valve; 312, second gear; 313, gear ring; 314, filter membrane; 315, fixed rod; 316, shifting rod; 317, fixed plate; 318, knocking rod; 319, straight pipe; 320, hose; 321, second blanking pipe; 322, fifth motor;

[0044] 4, adjustment mechanism; 401, first electric telescopic rod; 402, connecting frame; 403, seventh motor; 404, eighth motor; 405, spray head; 406, connecting box; 407, ninth motor; 408, fixed seat; 409, sewage pipe;

[0045] 5, gas chromatograph main body; 6, sample injector; 7, test tube; 8, shell; 9, placing rack; 10, protective cover; 11, first door plate; 12, second door plate; 13, discharge hopper; 14, solvent tank; 15, liquid discharge port; 16, second electric telescopic rod; 17, first support plate; 18, third electric telescopic rod; 19, first liquid discharge 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 liquid discharge cylinder; 27, fifth electric telescopic rod; 28, waste liquid tank. DETAILED DESCRIPTION

[0046] The application will be further described below in conjunction with the specific embodiments, wherein the drawings are only used for exemplary illustration, and the representations are only schematic diagrams, not physical diagrams, and cannot be understood as limitations of the application. In order to better illustrate the specific embodiments of the application, some components in the drawings will be omitted, enlarged or reduced, and it is understandable for those skilled in the art that some known structures and their descriptions in the drawings can be omitted. Based on the specific embodiments in the application, all other specific embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0047] To make the technical means, creative features, objectives, and effects of this invention easier to understand, it should be noted in the description of this invention that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The invention will be further described below in conjunction with specific embodiments.

[0048] Example

[0049] like Figures 1-17 As shown, the automated, high-throughput integrated device for sample pretreatment in gas chromatography includes a gas chromatograph main body 5 and a housing 8. The housing 8 is fixedly connected to one end of the gas chromatograph main body 5. An injector 6 is installed at the inlet of the gas chromatograph main body 5. The gas chromatograph main body 5 and the injector 6 utilize existing technology, and their working principles will not be detailed here. An adjustment mechanism 4 is installed on one side of the injector 6, and a test tube 7 is placed at the top of the adjustment mechanism 4. The test tube 7 is used to hold organic solvents containing organic contaminants for subsequent experimental analysis. The housing... The top of the housing 8 is fixedly connected to a placement rack 9, a weighing mechanism 1, and an extraction mechanism 2. One end of the extraction mechanism 2 is connected to a liquid separation mechanism 3, and the outlet end of the liquid separation mechanism 3 is located at the inlet of the test tube 7. A drain port 15 is provided on the inner side of the housing 8. The waste liquid generated by cleaning the weighing mechanism 1 will be discharged into the inner side of the waste liquid tank 28 through the drain port 15. A second door plate 12 is rotatably connected to one end of the housing 8. The waste liquid tank 28 is placed on the inner side of the housing 8. The drain port 15 is located above the waste liquid tank 28. The waste liquid tank 28 can store the waste liquid generated during the cleaning of the equipment.

[0050] The inner side of the placing rack 9 is placed with a solvent tank 14, a plurality of solvent tanks 14 containing different kinds of extractants are placed in the placing rack 9, and each solvent tank 14 is sequentially numbered by Arabic numerals for subsequent selection. These solvent tanks 14 can store a variety of extractants, and can select the appropriate extractant according to the characteristics of different organic pollutants during subsequent extraction. The top end of the shell 8 is fixedly connected with a second support plate 21, the inner side of the second support plate 21 is fixedly connected with a fourth electric telescopic rod 20, one end of the fourth electric telescopic rod 20 is fixedly connected with a placing plate 24, the top end of the placing plate 24 is fixedly connected with a second water pump 22, the inlet end of the second water pump 22 is connected with a flow valve 23, the flow valve 23 is communicated with the solvent tank 14 through a pipeline. When it is necessary to add extractant to the feed pipe 214, the fourth electric telescopic rod 20 is started to move the outlet end of the second water pump 22 to the upper side of the feed pipe 214 through the placing plate 24. According to the selected extractant, the corresponding second water pump 22 is opened to inject the extractant into the feed pipe 214. In this process, the flow valve 23 monitors the extractant addition amount in real time, and accurately controls the addition amount according to the weight of the organic pollutants, so as to ensure the efficiency and effect of extraction.

[0051] The top end of the shell 8 is fixedly connected with a first support plate 17, the inner side of the first support plate 17 is fixedly connected with a second electric telescopic rod 16, the other end of the second electric telescopic rod 16 is fixedly connected with a third electric telescopic rod 18, the bottom end of the third electric telescopic rod 18 is fixedly connected with a first lower liquid cylinder 19, and the first lower liquid cylinder 19 is communicated with an external water source. If it is necessary to clean the extraction mechanism 2, the position 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, the position of the first lower liquid cylinder 19 is adjusted in the horizontal and vertical directions, so that the first lower liquid cylinder 19 accurately moves to the upper side of the feed pipe 214 of the extraction mechanism 2. Then, clean 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 the subsequent extraction experiment, so as to finally improve the accuracy of detection.

[0052] The top end of the shell 8 is fixedly connected with a protective cover 10, one end of the protective cover 10 is rotatably connected with a first door plate 11, the top end of the protective cover 10 is fixedly connected with a third supporting plate 25, one end of the third supporting plate 25 is fixedly connected with a fifth electric telescopic rod 27, the bottom end of the fifth electric telescopic rod 27 is fixedly connected with a second lower liquid cylinder 26, the top end of the protective cover 10 is communicated with a discharge hopper 13, the position of the discharge 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 needed to clean a certain storage shell 103, the 103 needed to be cleaned is moved below the second lower liquid cylinder 26, then the second lower liquid cylinder 26 is covered together with the discharge hopper 13 through the fifth electric telescopic rod 27, cleaning water is introduced into the discharge hopper 13 through the second lower liquid cylinder 26, then the cleaning water enters the inside of the storage shell 103 through the corresponding material guide hopper 108, so that the cleaning of the inside of the storage shell 103 is realized.

[0053] As a further improvement of the application, as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, the weighing mechanism 1 comprises a first motor 101 fixedly connected with the shell 8, a placement disc 102 fixedly connected at the end of the main shaft of the first motor 101, a second flap valve 116 fixedly connected at the top end of the placement disc 102, a first discharging pipe 118 connected at the bottom end of the second flap valve 116, a weight sensor 117 fixedly connected at the top end of the valve core of the second flap valve 116, a first flap valve 115 fixedly connected at the top end of the second flap valve 116, a storage shell 103 fixedly connected at the top end of the first flap valve 115, the number of the storage shell 103 can be determined according to the design requirement, which can be 8, 16 or even more, a filter screen 107 rotatably connected at the inner side of the storage shell 103, a material guide hopper 108 fixedly connected at the top end of the storage shell 103, the top end surface of the material guide hopper 108 is attached to the inner wall of the shell 8, at the same time, the storage shell 103 can rotate along the inner wall of the shell 8 with the material guide hopper 108, when the material guide hopper 108 rotates to the lower side of the discharging hopper 13, the organic pollutant sample in the discharging hopper 13 enters the inner side of the storage shell 103 through the material guide hopper 108, a sliding block 104 is slidably connected at the top end of the inner side of the storage shell 103, a second motor 105 is fixedly connected at the inner side of the sliding block 104, a crushing rod 106 is fixedly connected at the end of the main shaft of the second motor 105, and a lifting assembly is arranged at one end of the sliding block 104.When it is necessary to add the organic pollutant sample to the inside of the storage shell 103, the first motor 101 is rotated with the placing disc 102, the second flap valve 116, the first flap valve 115 and the storage shell 103 and the guide hopper 108 to the lower side of the discharging hopper 13, and then the organic pollutant sample is added to the inside of the storage shell 103 through the discharging hopper 13 and the guide hopper 108, and an extraction agent database is preset in the operation system, which covers the information of various common extraction agents on the market, and when the organic pollutant sample is added, 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, and once the input and selection of the sample name and the extraction agent name are completed, the system will automatically store these information in the internal database and associate it with the current sample processing task, so as to realize the automatic addition of the extraction agent in the subsequent process. This intelligent operation mode not only improves the work efficiency, but also reduces the risk of human operation errors, and ensures 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 water samples, and the organic pollutants in the water are extracted into the n-hexane phase, and then the n-hexane phase is taken for gas chromatographic analysis), the liquid organic pollutant sample directly passes through the filter screen 107 and falls to the inside of the first flap valve 115. When the organic pollutant sample is solid (commonly used for extraction of organic pollutants in soil, plant and other samples, such as extraction of polycyclic aromatic hydrocarbons from soil), the second motor 105 breaks the solid organic pollutant with the crushing rod 106, and the filter screen 107 screens the broken solid organic pollutant, so that the qualified solid organic pollutant passes through the filter screen 107 and falls onto the first flap valve 115. After the solid organic pollutant is broken, its particle size is smaller and the specific surface area is significantly increased. When the solid organic pollutant contacts with the extraction agent, more pollutant surfaces can directly interact with the extraction agent molecules, so that the mass transfer area in the extraction process is increased, the mass exchange rate between the extraction agent and the pollutant is accelerated, and the extraction efficiency is improved. The extraction equilibrium can be reached in a shorter time, and the flowability of the mixture of the broken solid organic pollutant and the extraction agent is usually better than that of the unbroken one, which is conducive to the transportation in the subsequent process, reduces the operation difficulty, and improves the efficiency and stability of the entire process. When the first flap valve 115 rotates, the organic pollutant sample falls onto the weight sensor 117 inside the second flap valve 116. Through the cooperation of the weight sensor 117, the weight of the material is accurately measured, and the data is fed back to the related control system. The weight of the organic pollutant sample is measured to control the addition amount of the extraction agent, so as to ensure the efficiency and effect of the extraction. Then the second flap valve 116 is opened, and the organic pollutant sample enters the inside of the circulating pipe 202 through the feeding pipe 214.

[0054] As a further improvement of the present application, asFigure 4 and Figure 5 As shown in the figure, the lifting assembly comprises a fixed frame 114 fixedly connected with the storage shell 103, one end of the fixed frame 114 is fixedly connected with a third motor 113, the outer side of the main shaft of the third motor 113 is fixedly connected with a first gear 112, and the main shaft penetrates through the first gear 112 and is fixedly connected with the filter screen 107, one end of the first gear 112 is engaged with a rack 111, the outer side of the rack 111 is slidingly connected with a guide frame 110, and the guide frame 110 is fixedly connected with the storage shell 103, the top end of the rack 111 is fixedly connected with a connecting rod 109, and the connecting rod 109 is fixedly connected with the sliding block 104, when it is needed to clean the inside of the storage shell 103 after use, the third motor 113 is started to drive the first gear 112 and the filter screen 107 to rotate counterclockwise synchronously, in this process, the first gear 112 drives the sliding block 104 to move upward through the meshing action with the rack 111 and the connecting rod 109, then the sliding block 104 drives the second motor 105 connected therewith, and in turn drives the crushing rod 106 to move upward, in this way, the crushing rod 106 moves upward while the filter screen 107 rotates counterclockwise, so that the crushing rod 106 does not interfere with the rotation of the filter screen 107, when the filter screen 107 is turned over by 180 degrees, the cleaning water is injected into the inside of the storage shell 103 through the guide chute 108, the injection of the cleaning water not only can backwash the filter screen 107, but also can clean the inside of the storage shell 103 comprehensively, at the same time, with the downward flow of the cleaning water, the first flap valve 115, the second flap valve 116 and the first discharge pipe 118 can also be washed, when washing, the discharge opening of the first discharge pipe 118 is placed above the liquid discharge opening 15, so that the sewage is discharged into the waste liquid tank 28 through the liquid discharge opening 15.

[0055] As a further improvement of the present application, as Figure 2 , Figure 7 and Figure 8As shown, the extraction mechanism 2 comprises a first water pump 201 fixedly connected with the shell 8, the outlet end of the first water pump 201 is connected with a circulating pipe 202, the other end of the circulating pipe 202 is connected with the inlet end of the first water pump 201, the inner side of the circulating pipe 202 is provided with a stirring assembly, one end of the circulating pipe 202 is communicated with a feed pipe 214 arranged in a "Y" shape, the outer side of the feed pipe 214 is connected with a first electromagnetic valve 215, one end of the circulating pipe 202 is communicated with an elbow pipe 219, the other end of the elbow pipe 219 is connected with the liquid separation mechanism 3, the outer side of the elbow pipe 219 is communicated with a fourth electromagnetic valve 220, when the organic pollutants and the extractant are added to the inner side of the circulating pipe 202, the fourth electromagnetic valve 220 is in a closed state, when the circulating pipe 202 is discharged, the fourth electromagnetic valve 220 is opened, the outer side of the circulating pipe 202 is connected with a second electromagnetic valve 216, when the extractant and the organic pollutants flow in the circulating pipe 202, the second electromagnetic valve 216 is in an opened state, when the circulating pipe 202 is discharged, the second electromagnetic valve 216 is in a closed state, the top end of the circulating pipe 202 is communicated with an air pipe 217, the outer side of the air pipe 217 is connected with a third electromagnetic valve 218, when the organic pollutants and the extractant are added to the inner side of the circulating pipe 202, the third electromagnetic valve 218 is opened, so that the excess gas in the circulating pipe 202 can be normally discharged, and when the organic pollutants and the extractant in the circulating pipe 202 are discharged, the third electromagnetic valve 218 is also in an opened state, the organic pollutants flowing out of the first discharge pipe 118 enter the inner side of the circulating pipe 202 through the feed pipe 214, and the corresponding extractant also enters the inner side of the circulating pipe 202 through the feed pipe 214, after the organic pollutants and the extractant enter the inner side of the circulating pipe 202, the first electromagnetic valve 215 is closed, then the first water pump 201 repeatedly flows with the organic pollutants and the extractant in the inner side of the circulating pipe 202, so that the organic pollutants and the extractant flow in the circulating pipe 202, which can significantly speed up the extraction time, this method can promote the transfer of the target from the organic pollutants to the extractant by increasing the contact area and the mass transfer efficiency of the organic pollutants and the extractant, compared with the traditional manual oscillation, stirring and other methods, the extraction time is shortened.

[0056] As a further improvement of the present application, as Figure 7 and Figure 8As shown, the stirring assembly comprises a support base 210 fixedly connected with the shell 8, the inner side of the support base 210 is fixedly connected with a fourth motor 211, the main shaft tail end of the fourth motor 211 is fixedly connected with a rotating disc 212, one end of the rotating disc 212 is rotatably connected with a push rod 213, the other end of the push rod 213 is rotatably connected with a connecting disc 209, the inner side of the support base 210 is slidably connected with a guide shaft 221, the guide shaft 221 is fixedly connected with the connecting disc 209, one end of the connecting disc 209 is rotatably connected with an outer cylinder 208, the inner side of the outer cylinder 208 is slidably connected with an inner rod 207, one end of the inner rod 207 is fixedly connected with a rotating ball 204, the outer side of the rotating ball 204 is rotatably connected with a limiting ring 203, and the limiting ring 203 is fixedly connected with the circulating pipe 202, a sealing gasket is arranged between the limiting ring 203 and the rotating ball 204, so as to ensure the sealing property between the rotating ball 204 and the limiting ring 203, one end of the rotating ball 204 located at the circulating pipe 202 is fixedly connected with a stirring rod 205, the curvature of the stirring rod 205 is same with the curvature of the circulating pipe 202, so as to ensure that the stirring rod 205 can normally stir inside the circulating pipe 202, the top end and the bottom end of the stirring rod 205 are fixedly connected with a blocking rod 206, when the organic pollutants and the extractant flow inside the circulating pipe 202, the fourth motor 211 drives the rotating disc 212 to reciprocating rotate, then the rotating disc 212 drives the connecting disc 209 to reciprocating move in the vertical direction through the push rod 213, then the connecting disc 209 drives the rotating ball 204 to reciprocating swing 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 blocking rod 206 to reciprocating stir inside the circulating pipe 202, through the stirring, the mixing effect in the extraction process is enhanced, and at the same time, through the stirring, the solid organic pollutants can also be prevented from depositing inside the circulating pipe 202.

[0057] As a further improvement of the application, as Figure 2 、 Figure 7 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13As shown, the liquid separation mechanism 3 comprises an outer box body 301 fixedly connected with the elbow 219, the other end of the outer box body 301 is fixedly connected with a first shaft seal 303, the inner side of the first shaft seal 303 is fixedly connected with a transition pipe 302, the other end of the transition pipe 302 is also fixedly connected with a first shaft seal 303, and the other end of the transition pipe 302 is also rotatably connected with an outer box body 301 through the first shaft seal 303, the inner side of the outer box body 301 is rotatably connected with a filter cartridge 305, both ends of the filter cartridge 305 are fixedly connected with end covers 304, one end of the transition pipe 302 is fixedly connected with one of the end covers 304, the end cover 304 on the right side is provided with a through hole for liquid flow, the inner side of the filter cartridge 305 is provided with a knocking assembly, one end of the outer box body 301 is fixedly connected with a sixth motor 310, the main shaft of the sixth motor 310 is fixedly connected with a second gear 312, one end of the second gear 312 is engaged with a gear ring 313, and the gear ring 313 is fixedly connected with the transition pipe 302, the outer side of the filter cartridge 305 on the right side is fixedly connected with a filter membrane 314, the filter membrane 314 is a hydrophobic membrane (such as a PTFE membrane), which only allows the organic phase to pass through, the bottom end of the filter cartridge 305 on the left side and the filter membrane 314 are rotatably provided with a collection frame 306, and the collection frame 306 is fixedly connected with the filter cartridge 305 and the outer box body 301, the bottom end of the collection frame 306 is connected with a blowdown pipe 309, and the outlet end of the blowdown pipe 309 is arranged above the waste liquid tank 28, the outer side of the blowdown pipe 309 is connected with a fifth electromagnetic valve 311, and the judgment of the completion of extraction is closely related to the operation system in the following manner: firstly, a plurality of sensors such as concentration sensors, color sensors or conductivity sensors are installed at specific positions of the circulation pipe 202, these sensors are in real-time data transmission connection with the operation system of the gas chromatograph main body 5, and the monitored physical and chemical parameters such as solution concentration, color and conductivity are fed back to the data analysis module of the operation system in real time, the module is pre-set with an extraction equilibrium index, when the sensor data remains stable for a period of time and all parameters meet the pre-set extraction equilibrium index, the operation system determines that the extraction is completed, and sends instructions to the relevant executing components;Or the second, the operating system memory storage set extraction process information, including based on the previous experiment or experience data derived estimates extraction time, the operator in the start of extraction process, by operating panel input corresponding extraction process number, operating system automatically call the process of estimated extraction time data, and start internal timing module, when the timing module display time reaches the estimated extraction time, the operating system considers extraction complete, also to the relevant execution components issued subsequent operation instructions, extraction complete, will automatically open the fourth solenoid valve 220, the second solenoid valve 216 and the third solenoid valve 218, make the inside of the circulating pipe 202 after the extraction solution through the elbow pipe 219 into the inside of the outer box 301, make the extraction solution through the filter cartridge 305 first filtration, then the filtered solution through the transition pipe 302 into the next outer box 301 inside, make the extraction solution through the filter membrane 314 to realize the separation, make the organic phase through the corresponding transition pipe 302 into the inside of the straight pipe 319, then through the hose 320 and the second discharge pipe 321 into the inside of the test tube 7, through the test tube 7 storage, convenient sampler 6 in order to extract the organic phase in test tube 7 detection, and through the filter cartridge 305 and filter membrane 314 can continue to carry out the separation, do not need to stand for a period of time after the separation, thereby improving the efficiency of the separation.

[0058] As a further improvement of the present application, as Figure 9 、 Figure 10 、 Figure 11 and Figure 12As shown, the knocking assembly includes a fixed rod 315 fixedly connected with the outer box body 301, a top end of the fixed rod 315 is fixedly connected with a rotating shaft 308, an outer side of the rotating shaft 308 is fixedly connected with a second shaft seal 307, and the rotating shaft 308 is rotatably connected with the end cover 304 through the second shaft seal 307, an outer side of the rotating shaft 308 is fixedly connected with a push rod 316, one end of the push rod 316 is movably provided with a knocking rod 318, one end of the knocking rod 318 is rotatably connected with a fixed plate 317, and the fixed plate 317 is fixedly connected with the filter cartridge 305, a torsional spring is arranged between the knocking rod 318 and the fixed plate 317, and when the extracted solution passes through the filter cartridge 305 and the filter membrane 314 in sequence, the second gear 312 rotates with the transition pipe 302 through the gear ring 313, so that the transition pipe 302 rotates clockwise with the filter cartridge 305 and the filter membrane 314 through the corresponding end cover 304, and the filter cartridge 305 passes through the fixed plate 317 with the knocking rod 318 through the push rod 316, when the knocking rod 318 first contacts the push rod 316, the knocking rod 318 is separated from the filter cartridge 305 under the limiting action of the push rod 316, and when the knocking rod 318 passes through the push rod 316, the knocking rod 318 knocks the filter cartridge 305 under the torsional force of the torsional spring, the mechanical impact force generated by the rotation of the knocking rod 318 on the filter cartridge 305 can destroy the adhesion between the foreign matter and the surfaces of the filter cartridge 305 and the filter membrane 314, and some loose and attached granular or sheet-shaped foreign matters are easily separated from the surfaces of the filter cartridge 305 and the filter membrane 314 under the action of the knocking force, so that the amount of attached foreign matters is reduced, in addition to direct knocking, the rotation of the knocking rod 318 also drives the fluid near the filter cartridge 305 and the filter membrane 314 to generate disturbance, the movement of the fluid helps to flush the surfaces of the filter cartridge 305 and the filter membrane 314, and in cooperation with the mechanical action of knocking, some foreign matters with strong adhesion or attachment force can be more effectively removed, meanwhile, the collecting frame 306 also scrapes the foreign matters on the surfaces of the filter cartridge 305 and the filter membrane 314, so that the foreign matters are temporarily retained on the inner side of the collecting frame 306, the foreign matters on the surface of the filter membrane 314 can be scraped in real time through the collecting frame 306, so that the membrane flux of the filter membrane 314 is not affected, so that the filtering efficiency of the filter membrane 314 is maintained, and the overall processing efficiency is improved.

[0059] As a further improvement of the present application, as Figure 7As shown, the outlet end of the transition pipe 302 on the right side 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 hose 320, the other end of the hose 320 is fixedly connected with a second downpipe 321, one end of the second downpipe 321 is fixedly connected with a fifth motor 322 through a main shaft, and the fifth motor 322 is fixedly connected with the shell 8. During the cleaning cycle of the pipe 202, the cleaning water also cleans other components inside the outer shell 301, such as the filter cylinder 305, the filter membrane 314, and the collection frame 306. Part of the sewage generated by the cleaning is discharged through the collection frame 306, the sewage pipe 309, and the fifth electromagnetic valve 311. Part of it is also discharged to the inside of the waste liquid tank 28 through the second downpipe 321. At the same time, the fifth motor 322 rotates the second downpipe 321 in the direction of the waste liquid tank 28, so that the liquid outlet of the second downpipe 321 is above the waste liquid tank 28.

[0060] As a further improvement of the present application, as shown in Figure 2 and Figure 14 As shown, the adjusting mechanism 4 includes a seventh motor 403 fixedly connected with the gas chromatograph main body 5, a connecting box 406 fixedly connected at the end of the main shaft of the seventh motor 403, a first electric telescopic rod 401 fixedly connected inside the connecting box 406, a connecting frame 402 fixedly connected at the top end of the first electric telescopic rod 401, a ninth motor 407 fixedly connected at one end of the connecting frame 402, a fixing seat 408 fixedly connected at the end of the main shaft of the ninth motor 407, the fixing seat 408 being fixedly connected with the test tube 7, a sewage pipe 409 fixedly connected at one end of the connecting box 406, the outlet end of the sewage pipe 409 being arranged above the waste liquid tank 28, an eighth motor 404 fixedly connected inside the connecting box 406, a spray head 405 fixedly connected at the end of the main shaft of the eighth motor 404, the spray head 405 being in communication with an external water source, the test tube 7 being normally used with the inside of the connecting box 406 being extended, when the test tube 7 needs to be cleaned after use, the first electric telescopic rod 401 pulls the test tube 7 into the inside of the connecting box 406 through the connecting frame 402 and the fixing seat 408, at the same time, the ninth motor 407 rotates the fixing seat 408 and the test tube 7 by 90 degrees, so that the test tube 7 is in a horizontal state, then the eighth motor 404 rotates the spray head 405, 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, and the eighth motor 404 rotates counterclockwise by 360 degrees first, and then rotates clockwise by 360 degrees, to ensure that the water pipes connected with the spray head 405 are not entangled together, and the seventh motor 403 also rotates counterclockwise by 360 degrees first, and then rotates clockwise by 360 degrees, to rotate the organic phase to be detected below the sampler 6, so that the organic phase is extracted by the sampler 6 and input into the inside of the gas chromatograph main body 5, and detected by the gas chromatograph main body 5.

[0061] The foregoing is considered as a preferred embodiment of the present application. The essential principles and main features of the present application and the advantages thereof have been shown and described above. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only intended to illustrate the principles of the present application. Without departing from the scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

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

2. The automated, high-throughput, integrated device for sample pre-treatment prior to detection in a gas chromatograph of claim 1, wherein: The weighing mechanism (1) includes a first motor (101) fixedly connected with the shell (8), the main shaft end of the first motor (101) is fixedly connected with a placing disc (102), the top end of the placing disc (102) is fixedly connected with a second flap valve (116), the bottom end of the second flap valve (116) is connected with a first blanking pipe (118), the top end of the valve core of the second flap valve (116) is fixedly connected with a weight sensor (117), the top end of the second flap valve (116) is fixedly connected with a first flap valve (115), the top end of the first flap valve (115) is fixedly connected with a storage shell (103), the inner side of the storage shell (103) is rotatably connected with a filter screen (107), the top end of the storage shell (103) is fixedly connected with a material guide hopper (108), the inner side of the top end of the storage shell (103) is slidably connected with a sliding block (104), the inner side of the sliding block (104) is fixedly connected with a second motor (105), the main shaft end of the second motor (105) is fixedly connected with a crushing rod (106), one end of the sliding block (104) is provided with a lifting assembly.

3. The automated, high-throughput, integrated device for sample pre-treatment prior to detection in a gas chromatograph of claim 2, wherein: The lifting assembly includes a fixed frame (114) fixedly connected with the storage shell (103), one end of the fixed frame (114) is fixedly connected with a third motor (113), the outer side of the main shaft of the third motor (113) is fixedly connected with a first gear (112), and the main shaft penetrates through the first gear (112) and is fixedly connected with the filter screen (107), one end of the first gear (112) is engaged with a rack (111), the outer side of the rack (111) is slidably connected with a guide frame (110), and the guide frame (110) is fixedly connected with the storage shell (103), the top end of the rack (111) is fixedly connected with a connecting rod (109), and the connecting rod (109) is fixedly connected with the sliding block (104).

4. The automated, high-throughput, integrated device for sample pre-treatment prior to detection in a gas chromatograph of claim 1, wherein: The extraction mechanism (2) includes a first water pump (201) fixedly connected with the shell (8), the outlet end of the first water pump (201) is connected with a circulating pipe (202), the other end of the circulating pipe (202) is connected with the inlet end of the first water pump (201), the inner side of the circulating pipe (202) is provided with a stirring assembly, one end of the circulating pipe (202) is communicated with a "Y"-shaped feed pipe (214), the outer side of the feed pipe (214) is connected with a first electromagnetic valve (215), one end of the circulating pipe (202) is communicated with an elbow pipe (219), the other end of the elbow pipe (219) is connected with a liquid separation mechanism (3), the outer side of the elbow pipe (219) is communicated with a fourth electromagnetic valve (220), the outer side of the circulating pipe (202) is connected with a second electromagnetic valve (216), the top end of the circulating pipe (202) is communicated with a vent pipe (217), and the outer side of the vent pipe (217) is connected with a third electromagnetic valve (218).

5. The automated, high-throughput, integrated device for sample pre-treatment prior to detection in a gas chromatograph of claim 4, wherein: The stirring assembly includes a support seat (210) fixedly connected with the shell (8), the inner side of the support seat (210) is fixedly connected with a fourth motor (211), the main shaft end of the fourth motor (211) is fixedly connected with a rotating disc (212), one end of the rotating disc (212) is rotatably connected with a push rod (213), the other end of the push rod (213) is rotatably connected with a connecting disc (209), the inner side of the support seat (210) is slidably connected with a guide shaft (221), the guide shaft (221) is fixedly connected with the connecting disc (209), one end of the connecting disc (209) is rotatably connected with an outer cylinder (208), the inner side of the outer cylinder (208) is slidably connected with an inner rod (207), one end of the inner rod (207) is fixedly connected with a rotating ball (204), the outer side of the rotating ball (204) is rotatably connected with a limiting ring (203), the limiting ring (203) is fixedly connected with a circulating pipe (202), one end of the rotating ball (204) in the circulating pipe (202) is fixedly connected with a stirring rod (205), and the top end and the bottom end of the stirring rod (205) are fixedly connected with a blocking rod (206).

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

7. The automated, high-throughput, integrated device for sample pre-treatment prior to detection in a gas chromatograph of claim 6, wherein: The knocking assembly includes a fixed rod (315) fixedly connected with the outer box body (301), a rotating shaft (308) fixedly connected at the top end of the fixed rod (315), a second shaft seal (307) fixedly connected at the outer side of the rotating shaft (308), and the rotating shaft (308) is rotatably connected with the end cover (304) through the second shaft seal (307), a push rod (316) fixedly connected at the outer side of the rotating shaft (308), a knocking rod (318) movably arranged at one end of the push rod (316), a fixed plate (317) rotatably connected at one end of the knocking rod (318), and the fixed plate (317) is fixedly connected with the filter cartridge (305), and a torsional spring is arranged between the knocking rod (318) and the fixed plate (317).

8. The automated, high-throughput, integrated device for sample pre-treatment prior to detection in a gas chromatograph of claim 6, wherein: The outlet end of the transition pipe (302) on the right side is rotatably connected with a straight pipe (319) through a corresponding first shaft seal (303), one end of the straight pipe (319) is fixedly connected with a hose (320), the other end of the hose (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 shell (8).

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

Images