A sample preparation device

Abstract

The present invention belongs to the technical field of chemical detection, and is particularly a sample preparation device, including a device base, a sample preparation cylinder, a gas storage cylinder, an analysis and detection machine, a sampling pump, a motor, a delivery pump, a reagent storage cylinder, and a heating copper tube; a sample preparation cylinder is installed in the middle of the device base, an oscillation and stirring preparation chamber is arranged inside the sample preparation cylinder, a heating copper tube is installed on the outer wall of the oscillation and stirring preparation chamber inside the sample preparation cylinder, a stirring rod is installed in the oscillation and stirring preparation chamber, a motor connected to the stirring rod is installed on the top of the sample preparation cylinder, and an analysis and detection machine is installed on the left end of the device base. The present invention enables multiple types of original samples to complete the extraction of effective components on a set of equipment, saving instrument costs; the analysis and detection machine, sampling pump, motor, delivery pump and heating copper tube are electrically connected to the controller respectively; mechanical automatic control is realized, and reaction waste liquid can be recovered; reaction efficiency is improved, and the reaction is more sufficient and thorough.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical detection, and in particular relates to a sample preparation device. Background Art

[0002] Laboratory proficiency verification refers to the determination of the technical capabilities of laboratories in conducting specific testing activities by comparing designated test data between laboratories. The China National Accreditation Service for Conformity Assessment (CNAS) has formulated proficiency verification policies and requirements in accordance with the relevant requirements of the International Laboratory Accreditation Cooperation (ILAC) and the Asia-Pacific Laboratory Accreditation Cooperation (APLAC), organized proficiency verification activities and participated in international proficiency verification programs. Proficiency verification providers are laboratories that have established a quality assurance system in accordance with CNAS-CL03 "Criteria for Accreditation of Proficiency Verification Program Providers", passed the proficiency verification provider system review, and can be commissioned by the China National Accreditation Service for Conformity Assessment (CNAS) or operate proficiency verification programs within its accreditation scope.

[0003] At present, the sample pretreatment methods in the industry vary from laboratory to laboratory, the experimental equipment is scattered and diverse, the experimental operation is manually performed, and the experimental operators are required to have high skills. With the advancement of chemical detection and analysis technology and the continuous expansion of application fields, the experimental methods are constantly developing in depth and refinement, and the sample volume is also growing rapidly. The existing equipment and methods have low working efficiency and cannot avoid various difficult problems that arise in manual experimental operations. Summary of the invention

[0004] To solve the problems raised in the above background technology. The present invention provides a sample preparation device, which enables multiple types of original samples to complete the extraction of effective components on a set of equipment, saving instrument costs; the analysis and detection machine, sampling pump, motor, delivery pump and heating copper tube are electrically connected to the controller respectively; mechanical automatic control is realized, and reaction waste liquid can be recovered; the reaction efficiency is improved, and the reaction is more sufficient and thorough.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sample preparation device, including a device base, a sample preparation cylinder, a gas storage cylinder, a multi-channel control valve I, an analysis and detection machine, a sampling pump, a motor, a collector, a delivery pump, a multi-channel control valve II, a reagent storage cylinder, a waste cylinder and a heating copper tube; a sample preparation cylinder is installed in the middle of the device base, an oscillating stirring preparation chamber is arranged inside the sample preparation cylinder, a heating copper tube is installed on the outer wall of the oscillating stirring preparation chamber in the sample preparation cylinder, a stirring rod is installed in the oscillating stirring preparation chamber, a motor connected to the stirring rod is installed on the top of the sample preparation cylinder, and a motor connected to the stirring rod is installed on the left end of the device base. An analysis and detection machine is installed on it, which is connected to the oscillation and stirring preparation chamber through a sampling pump via a sampling tube. An air storage cylinder is installed on the top of the analysis and detection machine, and the top of the air storage cylinder is connected to the sample preparation cylinder through an air supply pipe via a multi-channel control valve I. Several reagent storage cylinders are installed on the right end of the equipment base, and the reagent storage cylinders are connected to the delivery pump through a multi-channel control valve II via an infusion pipe, and the delivery pump is connected to the sample preparation cylinder through a manifold and a liquid inlet pipe; the bottom of the sample preparation cylinder is connected to a waste liquid pipe and a connecting pipe through a three-way pipe, and is respectively connected to the waste cylinder and the delivery pump through the waste liquid pipe and the connecting pipe; a controller is also installed on the sample preparation cylinder.

[0006] Preferably, the gas cylinder is connected with an air inlet pipe, and a dispersion head is connected to the end of the air inlet pipe inside the gas cylinder; a first solenoid valve is installed on each channel of the multi-channel control valve I, and the top of the gas cylinder is connected to the air supply pipe which is connected to the air inlet interface at the top of the sample preparation cylinder through the multi-channel control valve I and the first solenoid valve; the first solenoid valve is electrically connected to the controller.

[0007] Preferably, a second solenoid valve is installed on each channel of the multi-channel control valve II; the reagent storage cylinder is arranged in one-to-one correspondence with the channels on the multi-channel control valve II through a hose via the second solenoid valve; and the second solenoid valve is electrically connected to the controller.

[0008] Preferably, a liquid inlet interface connected to a liquid inlet tube is installed on the top of the sample preparation tube.

[0009] Preferably, the waste liquid pipe and the connecting pipe are respectively provided with a first switch valve and a second switch valve.

[0010] Preferably, a liquid level sensor is installed on the top of the sample preparation tube, and a temperature sensor is installed on the upper end of the inner wall of the sample preparation tube. The liquid level sensor and the temperature sensor are electrically connected to the controller respectively.

[0011] Preferably, a support column is installed at the bottom of the equipment base, and a supporting caster is installed at the bottom of the support column.

[0012] Preferably, the analysis and detection machine, sampling pump, motor, delivery pump and heating copper tube are electrically connected to the controller respectively, a power supply electrically connected to the controller is installed on the base of the equipment, and the controller is connected to an external computer body; the analysis and detection machine, sampling pump, motor, delivery pump and heating copper tube are electrically connected to the power supply respectively.

[0013] Furthermore, a sample preparation device is provided, wherein the sample preparation method comprises the following steps:

[0014] S1, connecting the gas storage cylinder and the sample preparation cylinder to each other through the gas delivery pipe via the multi-channel control valve I; connecting the reagent storage cylinder to the delivery pump via the multi-channel control valve II and the infusion pipe, and then connecting the delivery pump to the sample preparation cylinder through the manifold and the liquid inlet pipe;

[0015] S2. During the sample preparation process, the original sample is placed in the sample preparation tube, and the delivery pump is started to open the second solenoid valve on the multi-channel control valve II corresponding to the chemical reagent in the reagent storage tube. The reagent is then transferred into the sample preparation tube through the infusion tube, the manifold and the liquid inlet tube, and the liquid level in the oscillation stirring chamber is monitored in real time by the liquid level sensor and fed back to the controller; at the same time, the motor is started to drive the stirring rod to perform oscillation stirring operation;

[0016] S3. If the sample preparation tube needs to be heated during the preparation process, the controller controls the heating copper tube to heat the sample preparation tube, and the temperature sensor monitors the temperature inside the oscillating stirring chamber in real time and feeds back to the controller; so that the original sample and the reaction reagent are fully in contact, the reaction efficiency is improved, the reaction time is shortened, and the chemical reaction is more complete and thorough within the effective reaction time;

[0017] S4. If gas needs to be introduced for reaction during the preparation process, the controller can be used to control the first solenoid valve to open, and the gas in the gas storage cylinder is input into the oscillation stirring chamber through the gas pipe and the multi-channel control valve I for reaction with chemical reagents to prepare the sample operation;

[0018] S5. After the specified preparation time, the controller starts the sampling pump to extract the sample inside the oscillating stirring chamber through the sampling tube and enter the analysis and detection machine, and compares and analyzes the sample information input by the analysis and detection machine; if the sample analysis and detection meets the standard, it can be output;

[0019] If the sample analysis test does not meet the standard, open the second switch valve, mix the sample in the oscillation stirring chamber and the reagent in the reagent storage cylinder through the delivery pump, and then input the mixed sample into the oscillation stirring chamber in the sample preparation cylinder for sample preparation again; after preparation, repeat the sampling analysis test, and the sample analysis test is passed; if the sample analysis test is unqualified, open the first switch valve to output the waste liquid through the waste liquid pipe to the waste cylinder for recovery.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The integrated sample preparation device of the present invention enables multiple types of original samples to complete the extraction of effective components on a set of equipment, saving instrument costs; the analysis and detection machine, sampling pump, motor, delivery pump and heating copper tube are electrically connected to the controller respectively; mechanical automatic control is realized to solve the problems of low efficiency, high cost, chemical reagent exposure and poor repeatability caused by manual operation; reaction waste liquid can be recovered; under automatic stirring control, the structure can make the original sample and the reaction reagent fully contact, improve the reaction efficiency, shorten the reaction time, and make the chemical reaction more sufficient and thorough within the effective reaction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the internal structure of a sample preparation device of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a sample preparation device of the present invention;

[0025] Figure 3 It is a schematic diagram of the side structure of the connection between the multi-channel control valve II and the reagent storage cylinder in a sample preparation device of the present invention;

[0026] Figure 4 The figure is a schematic diagram of the control principle structure of a sample preparation device of the present invention.

[0027] In the figure: 1. Equipment base; 2. Sample preparation cylinder; 3. Gas storage cylinder; 4. Multi-channel control valve I; 5. Analytical detection machine; 6. Sampling pump; 7. Motor; 8. Collector; 9. Delivery pump; 10. Multi-channel control valve II; 11. Reagent storage cylinder; 12. Waste cylinder; 13. Liquid inlet pipe; 14. Infusion pipe; 15. Heating copper pipe; 16. Connecting pipe; 17. Second switch valve; 18. First switch valve; 19. Support casters; 20. Support column; 21. Air inlet interface; 22. Liquid inlet interface; 23. Liquid level sensor; 24. Temperature sensor; 25. Stirring rod; 31. Air inlet pipe; 32. Air delivery pipe; 33. Dispersing head; 41. First solenoid valve; 101. Second solenoid valve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] Example 1

[0032] See also Figure 1-4The present invention provides the following technical solutions: a sample preparation device, including a device base 1, a sample preparation cylinder 2, a gas storage cylinder 3, a multi-channel control valve I 4, an analysis and detection machine 5, a sampling pump 6, a motor 7, a collector 8, a delivery pump 9, a multi-channel control valve II 10, a reagent storage cylinder 11, a waste cylinder 12 and a heating copper tube 15; a sample preparation cylinder 2 is installed in the middle of the device base 1, an oscillation stirring preparation chamber is arranged inside the sample preparation cylinder 2, a heating copper tube 15 is installed on the outer wall of the oscillation stirring preparation chamber in the sample preparation cylinder 2, a stirring rod 25 is installed in the oscillation stirring preparation chamber, a motor 7 connected to the stirring rod 25 is installed on the top of the sample preparation cylinder 2, and a separation cylinder 11 is installed on the left end of the device base 1. The analysis and detection machine 5 is connected to the oscillation and stirring preparation chamber through the sampling pump 6 via the sampling tube. A gas storage cylinder 3 is installed on the top of the analysis and detection machine 5. The top of the gas storage cylinder 3 is connected to the sample preparation cylinder 2 through the gas delivery pipe 32 via the multi-channel control valve Ⅰ4. A plurality of reagent storage cylinders 11 are installed on the right end of the equipment base 1. The reagent storage cylinder 11 is connected to the delivery pump 9 through the multi-channel control valve Ⅱ10 via the infusion pipe 14. The delivery pump 9 is connected to the sample preparation cylinder 2 through the manifold 8 via the liquid inlet pipe 13; the bottom of the sample preparation cylinder 2 is connected to the waste liquid pipe and the connecting pipe 16 through the three-way pipe, and is respectively connected to the waste cylinder 12 and the delivery pump 9 through the waste liquid pipe and the connecting pipe 16; the sample preparation cylinder 2 is also equipped with a controller.

[0033] Specifically, the gas cylinder 3 is connected with an air inlet pipe 31, and a dispersion head 33 is connected to the end of the air inlet pipe 31 inside the gas cylinder 3; a first solenoid valve 41 is installed on each channel of the multi-channel control valve Ⅰ4, and the top of the gas cylinder 3 is connected to the air supply pipe 32, which is connected to the air inlet interface 21 at the top of the sample preparation cylinder 2 through the multi-channel control valve Ⅰ4 and the first solenoid valve 41; the first solenoid valve 41 is electrically connected to the controller.

[0034] Specifically, a second solenoid valve 101 is installed on each channel of the multi-channel control valve II10; the reagent storage cylinder 11 is arranged one-to-one with the channels on the multi-channel control valve II10 through a hose through the second solenoid valve 101; and the second solenoid valve 101 is electrically connected to the controller.

[0035] Specifically, a liquid inlet interface 22 connected to the liquid inlet tube 13 is installed on the top of the sample preparation tube 2 .

[0036] Specifically, the waste liquid pipe and the connecting pipe 16 are respectively provided with a first switch valve 18 and a second switch valve 17 .

[0037] Specifically, a liquid level sensor 23 is installed on the top of the sample preparation tube 2, and a temperature sensor 24 is installed on the upper end of the inner wall of the sample preparation tube 2. The liquid level sensor 23 and the temperature sensor 24 are electrically connected to the controller respectively.

[0038] Specifically, a support column 20 is installed at the bottom of the equipment base 1, and a supporting caster 19 is installed at the bottom of the support column 20.

[0039] Specifically, the analysis and detection machine 5, sampling pump 6, motor 7, delivery pump 9 and heating copper tube 15 are electrically connected to the controller respectively, a power supply electrically connected to the controller is installed on the equipment base 1, and the controller is connected to the external computer body; the analysis and detection machine 5, sampling pump 6, motor 7, delivery pump 9 and heating copper tube 15 are electrically connected to the power supply respectively.

[0040] The working principle and use process of the present invention are as follows: when the present invention is used, the gas storage cylinder 3 and the sample preparation cylinder 2 are connected to each other through the gas delivery pipe 32 via the multi-channel control valve Ⅰ4, the gas used in the sample preparation process is introduced into the gas storage cylinder 3 through the air inlet pipe 31, the reagent storage cylinder 11 is connected to the delivery pump 9 through the multi-channel control valve Ⅱ10 and the infusion pipe 14, and the delivery pump 9 is connected to the sample preparation cylinder 2 through the manifold 8 through the inlet pipe 13; during the sample preparation process, the original sample is introduced into the sample preparation cylinder 2, the delivery pump 9 is started to open the second solenoid valve 101 on the multi-channel control valve Ⅱ10 corresponding to the required chemical reagent in the reagent storage cylinder 11, and then the chemical reagent is input into the sample preparation cylinder 2 through the infusion pipe 14, the manifold 8 and the inlet pipe 13, and the liquid level inside the oscillation stirring chamber is monitored in real time by the liquid level sensor 23, and the liquid level is fed back to the controller; the device is integrated so that various types of original samples can complete the extraction of effective components on a set of devices, saving the instrument cost; at the same time, the motor 7 is started to drive the stirring rod 25 to perform oscillation stirring operation;

[0041] If it is necessary to heat the inside of the sample preparation tube 2 during the preparation process, the controller can control the heating copper tube 15 to heat the inside of the sample preparation tube 2, and the temperature sensor 24 can monitor the internal temperature of the oscillation stirring chamber in real time and feed back to the controller; so that the original sample and the reaction reagent can be fully contacted, the reaction efficiency can be improved, the reaction time can be shortened, and the chemical reaction can be more sufficient and thorough within the effective reaction time.

[0042] If it is necessary to react the gas introduced into the sample preparation cylinder 2 during the preparation process, the controller can control the first solenoid valve 41 to open, and the gas in the gas storage cylinder 3 is input into the oscillation stirring chamber through the gas delivery pipe 32 and the multi-channel control valve I4 for reacting with the chemical reagent to prepare the sample;

[0043] After the specified preparation time, the controller starts the sampling pump 6 to extract the sample inside the oscillating stirring chamber through the sampling tube and enter the analysis and detection machine 5, and compares and analyzes it with the sample information of the analysis and detection machine 5 input; if the sample analysis and detection meet the standards, it can be output; if the sample analysis and detection do not meet the standards, open the second switch valve 17, and mix the sample in the oscillating stirring chamber with the reagent in the reagent storage cylinder 11 through the delivery pump 9, and then input it into the oscillating stirring chamber in the sample preparation cylinder 2 for sample preparation again; after preparation, repeat the sampling and analysis, and the sample analysis and detection pass; if the sample analysis and detection fails, open the first switch valve 18 and output it from the waste liquid pipe to the waste material cylinder 12 for processing; (the above-mentioned sample preparation sampling and analysis detection times can be repeated several times according to experimental needs).

[0044] It realizes mechanical automation control, solves the problems of low efficiency, high cost, chemical reagent exposure and poor repeatability caused by manual operation; and can recycle reaction waste liquid.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sample preparation device, characterized in that: The invention comprises an equipment base (1), a sample preparation cylinder (2), an air storage cylinder (3), a multi-channel control valve I (4), an analysis and detection machine (5), a sampling pump (6), a motor (7), a collector (8), a delivery pump (9), a multi-channel control valve II (10), a reagent storage cylinder (11), a waste cylinder (12) and a heating copper tube (15); a sample preparation cylinder (2) is installed in the middle of the equipment base (1), an oscillating and stirring preparation chamber is arranged inside the sample preparation cylinder (2), a heating copper tube (15) is installed on the outer wall of the oscillating and stirring preparation chamber inside the sample preparation cylinder (2), and a heating copper tube (15) is installed inside the oscillating and stirring preparation chamber. A stirring rod (25) is installed, a motor (7) connected to the stirring rod (25) is installed on the top of the sample preparation tube (2), an analysis and detection machine (5) is installed on the left end of the equipment base (1), the analysis and detection machine (5) is connected to the oscillation stirring preparation chamber through a sampling pump (6) via a sampling tube, an air storage cylinder (3) is installed on the top of the analysis and detection machine (5), the top of the air storage cylinder (3) is connected to the sample preparation tube (2) through an air supply pipe (32) through a multi-channel control valve I (4), and a plurality of reagent storage cylinders (11) are installed on the right end of the equipment base (1), the reagent storage cylinders (11) are connected to the sample preparation tube (2) through a multi-channel control valve II (10) is connected to the delivery pump (9) through the infusion tube (14), and the delivery pump (9) is connected to the sample preparation cylinder (2) through the manifold (8) and the liquid inlet tube (13); the bottom of the sample preparation cylinder (2) is connected to a waste liquid tube and a connecting tube (16) through a three-way tube, and is respectively connected to the waste cylinder (12) and the delivery pump (9) through the waste liquid tube and the connecting tube (16); the sample preparation cylinder (2) is also equipped with a controller; the gas storage cylinder (3) is connected to an air inlet tube (31), and a dispersion head (33) is connected to the end of the air inlet tube (31) inside the gas storage cylinder (3); the multi-channel control valve I ( A first solenoid valve (41) is installed on each channel of the multi-channel control valve (4); the top of the gas storage cylinder (3) is connected to the gas supply pipe (32) and is connected to the gas inlet interface (21) at the top of the sample preparation cylinder (2) through the multi-channel control valve I (4) and the first solenoid valve (41); the first solenoid valve (41) is electrically connected to the controller; a second solenoid valve (101) is installed on each channel of the multi-channel control valve II (10); the reagent storage cylinder (11) is arranged in a one-to-one correspondence with the channels on the multi-channel control valve II (10) through a hose through the second solenoid valve (101); the second solenoid valve (101) is electrically connected to the controller.

2. A sample preparation device according to claim 1, characterized in that: A liquid inlet interface (22) connected to a liquid inlet tube (13) is installed on the top of the sample preparation cylinder (2).

3. A sample preparation device according to claim 1, characterized in that: The waste liquid pipe and the connecting pipe (16) are respectively provided with a first switch valve (18) and a second switch valve (17).

4. A sample preparation device according to claim 1, characterized in that: A liquid level sensor (23) is installed on the top of the sample preparation tube (2), and a temperature sensor (24) is installed on the upper end of the inner wall of the sample preparation tube (2). The liquid level sensor (23) and the temperature sensor (24) are electrically connected to the controller respectively.

5. A sample preparation device according to claim 1, characterized in that: A support column (20) is installed at the bottom of the equipment base (1), and a support caster (19) is installed at the bottom of the support column (20).

6. A sample preparation device according to claim 1, characterized in that: The analysis and detection machine (5), the sampling pump (6), the motor (7), the delivery pump (9) and the heating copper tube (15) are respectively electrically connected to the controller; a power supply electrically connected to the controller is installed on the equipment base (1); the controller is connected to an external computer body; the analysis and detection machine (5), the sampling pump (6), the motor (7), the delivery pump (9) and the heating copper tube (15) are respectively electrically connected to the power supply.

7. A sample preparation device according to claim 1, characterized in that: The sample preparation method steps are as follows: S1, connecting the gas storage cylinder (3) and the sample preparation cylinder (2) to each other through the gas delivery pipe (32) and the multi-channel control valve I (4); connecting the reagent storage cylinder (11) to the delivery pump (9) through the multi-channel control valve II (10) and the infusion pipe (14); and then connecting the delivery pump (9) to the sample preparation cylinder (2) through the manifold (8) and the liquid inlet pipe (13); S2, during the sample preparation process, the original sample is placed in the sample preparation tube (2), the delivery pump (9) is started to open the second solenoid valve (101) on the multi-channel control valve II (10) corresponding to the chemical reagent in the reagent storage tube (11), and then the chemical reagent is introduced into the sample preparation tube (2) through the infusion tube (14), the collector (8) and the liquid inlet tube (13), and the liquid level in the oscillation stirring chamber is monitored in real time by the liquid level sensor (23) and fed back to the controller; at the same time, the motor (7) is started to drive the stirring rod (25) to perform the oscillation stirring operation; S3. If it is necessary to heat the inside of the sample preparation tube (2) during the preparation process, the controller controls the heating copper tube (15) to heat the inside of the sample preparation tube (2), and the temperature sensor (24) monitors the temperature inside the oscillating stirring chamber in real time and feeds back to the controller; the original sample and the reaction reagent are fully contacted, the reaction efficiency is improved, the reaction time is shortened, and the chemical reaction is more complete and thorough within the effective reaction time; S4. If gas needs to be introduced for reaction during the preparation process, the controller can be used to control the first solenoid valve (41) to open, and the gas in the gas storage cylinder (3) is input into the oscillation stirring chamber through the gas supply pipe (32) and the multi-channel control valve I (4) for reaction with the chemical reagent to prepare the sample; S5, after the specified preparation time, the controller starts the sampling pump (6) to extract the sample in the oscillating stirring chamber through the sampling tube and enter the analysis and detection machine (5), and compares and analyzes the sample information input by the analysis and detection machine (5); If the sample analysis and testing meets the standards, it can be output; If the sample analysis test fails to meet the standard, the second switch valve (17) is opened, and the sample in the oscillating stirring chamber and the reagent in the reagent storage cylinder (11) are mixed by the delivery pump (9) and then input into the oscillating stirring chamber in the sample preparation cylinder (2) for sample preparation again; after preparation, the sampling analysis test is repeated, and the sample analysis test passes; if the sample analysis test fails, the first switch valve (18) is opened to output the sample through the waste liquid pipe to the waste cylinder (12) for recovery.

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