A sewage enrichment instrument for drug tracing

Abstract

The present invention relates to the technical field of drug tracing, specifically a sewage enrichment instrument for drug tracing, which is composed of a casing panel, a bottom plate and a back plate connected as one, and internally integrates a control unit, a power supply unit, a peristaltic pump, a filtering unit, a collection unit, an enrichment unit, a concentration unit, a multi-connected reagent tank and a multi-channel injection pump. The peristaltic pump is arranged on the outside of the panel, and each unit corresponds to a hole to form an operating space. The present invention simplifies the operating process, is convenient for non-professionals to use, and improves the efficiency and convenience of sewage enrichment.

Description

Technical Field

[0001] The invention relates to the technical field of drug tracing, in particular to a sewage enrichment device used for drug tracing. Background Art

[0002] In order to effectively monitor and combat drug abuse, sewage drug testing technology has emerged. This technology conducts chemical analysis on untreated domestic sewage to detect and quantify trace drug residues in it, thereby assessing drug use in a specific area.

[0003] The application of sewage drug testing technology can not only reflect the drug consumption, types and population size in a region at a macro level, but also achieve accurate positioning from sewage mains to branches, regions, communities and even units through a progressive tracing method. This tracing capability is of great significance in revealing the geographical distribution and sources of drug abuse, and provides precise targets for crackdowns and prevention strategies.

[0004] However, the traditional sewage drug testing process has many limitations. The operation process is cumbersome and requires multiple steps to be completed manually, which increases the complexity of the operation and prolongs the detection cycle. Water samples collected on site need to be stored and transported under specific conditions, which increases the difficulty of sample processing. In addition, operators need to have certain professional skills to ensure the accuracy of the operation and the reliability of the results. These factors together limit the widespread application and rapid popularization of sewage drug testing technology. Summary of the invention

[0005] In order to overcome these shortcomings, the present invention proposes a new type of sewage enrichment instrument for drug tracing. The design of the instrument makes it possible to quickly enrich drug residues in sewage on site, greatly simplifies the operation process, and reduces the dependence on professional operators. The portable design allows operators to carry out enrichment work directly at the sewage collection site without taking water samples back to the laboratory, thereby saving time and cost, and improving the timeliness and flexibility of detection. In addition, the application of this instrument also helps to realize the progressive tracing of sewage drug testing technology, provides more precise strike targets and prevention strategies, and further enhances the pertinence and effectiveness of drug monitoring. To this end, the technical solution adopted by the present invention is:

[0006] A sewage enrichment instrument for drug tracing, wherein the front panel, bottom panel and back panel of the casing are connected as one, and the top panel and two side panels are connected as one; a control unit and a power supply unit are arranged in the casing, and different from the prior art, a peristaltic pump for extracting water samples, a filtering unit for removing impurities from the water samples, a collection unit for volume fixing and acidifying the water samples after impurities removal, an enrichment unit for enriching drugs in the water samples after volume fixing and acidification, a concentration unit for concentrating the eluent after enrichment, a multi-unit reagent tank for storing reagents, and a multi-channel injection pump for driving the transfer or addition of water samples, reagents and air between the units; an extrusion rotor and an extrusion hose of the peristaltic pump are arranged on the outer side of the panel, and holes are opened on the panels corresponding to the filtering unit, the collection unit, the enrichment unit and the concentration unit, and the operating space of each unit is formed in the holes.

[0007] Furthermore, a water inlet pipe of the peristaltic pump is connected to a water inlet installed on the back plate.

[0008] Furthermore, the filter unit includes a filter, a filter hole is opened on the panel, a filter shell connected to the filter hole is fixedly arranged in the panel, and an operating space for replacing the filter is formed in the filter shell; a fixed angle plate is fixedly arranged on the inner side of the panel below the filter shell, and a second guide rail with a vertical stroke is fixedly arranged on the fixed angle plate, and the second guide rail slides with the second slider, and a movable angle plate is fixedly arranged on the second slider, and a filter lower seat is fixedly arranged on the movable angle plate, and the filter lower seat is connected to the lower end of the filter after passing through the filter shell through the gap, and the upper end of the filter shell is fixedly arranged with a filter upper seat suitable for connecting with the upper end of the filter; a heavy-duty cabinet door rebounder is fixedly arranged on the inner side of the panel below the movable angle plate, and the telescopic rod of the heavy-duty cabinet door rebounder abuts the movable angle plate; the filter upper seat is connected to one port of the second three-way valve, the second port of the second three-way valve is connected to the water outlet pipe of the peristaltic pump, and the third port of the second three-way valve is connected to the pressure sensor; the filter lower seat is connected to the sampling tube of the collection unit through the pipe channel.

[0009] Furthermore, the collection unit includes a water sample quantitative cup, a water sample collection hole is provided on the panel, a water sample collection shell connected to the water sample collection hole is fixedly arranged in the panel, and an operating space for taking and placing the water sample quantitative cup is formed in the water sample collection shell; a fixed plate is fixedly arranged above the water sample collection shell, a first guide rail with a vertical stroke is fixedly arranged on the fixed plate, the first guide rail slidably cooperates with the first slider, a mounting block is fixedly arranged on the first slider, an inlet tube, a sample outlet tube and two electrodes that can be extended into or withdrawn from the through hole at the upper end of the water sample collection shell are installed on the mounting block, the length of the inlet tube is less than the length of the sample outlet tube, the inlet tube is connected to the filter lower seat of the filter unit, the sample outlet tube is connected to the 4 channels of the multi-channel injection pump through a pipeline, and the two electrodes are connected to the control unit that controls the peristaltic pump; a first strip hole and a second strip hole with a vertical length that overlap are provided on the mounting block and the panel, and the rod of the handle passes through the second strip hole and the first strip hole and is fixedly connected to the mounting block.

[0010] Furthermore, the enrichment unit includes an extraction column, an enrichment hole is opened on the panel, an enrichment shell connected to the enrichment hole is fixedly arranged in the panel, and an operation space for replacing the extraction column is formed in the enrichment shell; a fixed angle plate is fixedly arranged on the inner side of the panel below the enrichment shell, a second guide rail with a vertical stroke is fixedly arranged on the fixed angle plate, the second guide rail slides and cooperates with the second slider, a movable angle plate is fixedly arranged on the second slider, a lower seat of the extraction column is fixedly arranged on the movable angle plate, and the lower seat of the extraction column is connected to the lower end of the extraction column after passing through the enrichment shell; an upper seat of the extraction column suitable for connecting with the upper end of the extraction column is fixedly arranged on the upper end of the enrichment shell; a heavy-duty cabinet door rebounder is fixedly arranged on the inner side of the panel below the movable angle plate, and the telescopic rod of the heavy-duty cabinet door rebounder abuts the movable angle plate; the upper seat of the extraction column is connected to the 5 channels of the multi-channel injection pump through a pipe channel, the lower seat of the extraction column is connected to one port of the first three-way valve, the second port of the first three-way valve is connected to the sample enrichment liquid channel opened in the upper chuck of the concentration unit, and the third port of the first three-way valve is connected to the waste liquid port installed on the back plate.

[0011] Furthermore, the concentration unit includes a collecting tube, a concentration hole is provided on the panel, a concentration shell connected to the concentration hole is fixedly arranged in the panel, and a concentration operation space is formed in the concentration shell; an upper clamp is arranged at the upper end of the concentration shell, and a lower clamp is arranged at the lower end, and the collecting tube is floatingly installed between the upper clamp and the lower clamp; the upper clamp includes an outer limit ring and an inner limit platform which pass through the concentration shell and enter into the inner portion thereof, and the outer limit ring and the inner limit platform are connected by a plurality of abutting spokes, the inner diameter of the outer limit ring is slightly larger than the outer diameter of the collecting tube, the outer diameter of the inner limit platform is slightly smaller than the inner diameter of the collecting tube, and the thickness of the abutting spokes is The thickness of the sample enrichment liquid channel, the forced evaporation airflow channel and the rehydration solution channel are smaller than the thickness of the outer limit ring and the inner limit platform, and the upper chuck is provided with a sample enrichment liquid channel, a forced evaporation airflow channel and a rehydration solution channel, and the three channels are respectively opened at the upper end face of the upper chuck or the adjacent surface of the upper end face and the lower end face of the inner limit platform; the upper end of the collecting tube is abutted with one or more abutting spokes; a fan is fixedly arranged in the panel, the air outlet of the fan is connected to the upper end of the air duct, and the lower end of the air duct is connected to the forced evaporation airflow channel; the sample enrichment liquid channel is connected to the second port of the first three-way valve of the enrichment unit through a pipeline; the rehydration solution channel is connected to the 6 channels of the multi-channel injection pump through a pipeline.

[0012] Furthermore, a heating wire is wound around the air duct, a temperature sensor is installed near the lower end of the air duct, a temperature controller is installed on a panel next to the concentration hole, and the temperature sensor is connected to the temperature controller; the lower chuck includes a cylindrical elastomer that passes through the concentration shell and enters the inside thereof, a bell mouth is provided at the upper end of the cylindrical elastomer, the opening diameter of the bell mouth is larger than the outer diameter of the collecting tube, and the conical arc surface of the bell mouth abuts against the lower end of the collecting tube; the cylindrical elastomer passes through the concentration shell with a large gap, and a driving groove is provided at the lower end; a motor is installed in the panel and below the concentration shell, the motor shaft of the motor is fixedly connected to a vibration disk, the driving shaft is fixedly connected to the vibration disk, the vibration disk and the driving shaft are not coaxial with the motor shaft of the motor, and the driving shaft is embedded in the driving groove; the upper end of the cylindrical elastomer extends outward and downward to form a skirt, the lower end of the skirt abuts against the bottom wall of the concentration shell, and the outer diameter of the lower end of the skirt is larger than the gap between the bottom wall of the concentration shell and the cylindrical elastomer; the motor is installed on the body in the panel through elastic support.

[0013] Furthermore, the quadruple reagent tank includes a rectangular polytetrafluoroethylene tank body, and four cylindrical cavities A, B, C and D are vertically opened on the polytetrafluoroethylene tank body to respectively hold an activator, a resolvent, an eluent and an acid regulator, and the reagent outlets opened at the lowest points of the cylindrical cavities A, B, C and D are connected to channel 1, channel 2, channel 3 and channel 7 of a multi-channel injection pump through pipelines; the upper ends of the cylindrical cavities A, B, C and D are screwed with polytetrafluoroethylene covers, a screw hole is opened at the upper end of the polytetrafluoroethylene cover, a light hole with a smaller diameter is opened at the bottom of the screw hole, a latex duckbill valve is inserted into the light hole, a polytetrafluoroethylene hexagonal stud is screwed into the screw hole, and an air hole is opened in the polytetrafluoroethylene hexagonal stud along the axial direction; liquid level sensors are respectively installed near the lower ends of the cylindrical cavities A, B, C and D.

[0014] Furthermore, the channels of the multi-channel injection pump can be blocked or connected, wherein channel 8 is connected to the atmosphere, channel 9 is connected to the waste liquid port installed on the back plate through a tee, and unused channels are blocked by plugs.

[0015] Furthermore, the power supply unit integrates a lithium-ion battery pack. The power supply unit has a dual-mode power supply mechanism, allowing selection between two power supply modes. When the mains power is available, it uses the mains power supply and charges the lithium-ion battery pack through the built-in charging channel; when the mains power supply is interrupted or unavailable, it seamlessly switches to the lithium-ion battery pack for power supply to maintain continuous operation.

[0016] Compared with the prior art, the sewage enrichment device of the present invention has the following beneficial technical effects:

[0017] 1. Ease of operation: The integrated design simplifies the operation process and reduces the manual operation steps, so that non-professionals can quickly get started with sewage enrichment operations.

[0018] 2. On-site applicability: The portable design allows enrichment work to be carried out directly at the sewage collection site, eliminating the step of bringing water samples back to the laboratory and improving work efficiency.

[0019] 3. Improved timeliness: Since enrichment processing can be carried out immediately at the collection site, the time period from water sample collection to result analysis is greatly shortened.

[0020] 4. Cost savings: Reduces the cost of sample storage, transportation and laboratory processing, making drug monitoring more economical and efficient.

[0021] 5. Improved flexibility: The portability of the instrument allows monitoring work to be carried out flexibly in different locations and adapt to different field conditions.

[0022] 6. Multifunctional integration: It integrates the functions of extraction, filtration, volume determination, acidification, enrichment, concentration, rotation mixing and reagent storage, realizing the full process automation of water sample treatment.

[0023] 7. Environmental adaptability: The design of the instrument takes into account the adaptability to different environmental conditions, especially the parts in contact with reagents are made of polytetrafluoroethylene, such as multi-unit reagent tanks, because polytetrafluoroethylene material has stable performance, especially methanol solvent placed in a polytetrafluoroethylene container can ensure stable operation in various environments.

[0024] 8. Data accuracy: The accuracy of drug detection data is improved by precisely controlling the transfer or addition of water samples and reagents.

[0025] 9. High degree of automation: The use of multi-channel injection pumps improves the degree of automation and reduces errors caused by human operation.

[0026] 10. Optimized reagent management: The design of the multi-reagent tank optimizes the storage and management of reagents, making it easier for users to replace and use reagents. It is equipped with a liquid level detection function, which allows users to add liquid in time when the liquid is insufficient.

[0027] 11. User-friendliness: The instrument has a friendly operating interface, which is easy to understand and operate, improving the user experience.

[0028] 12. Easy maintenance: The instrument is designed with maintenance convenience in mind, allowing for regular inspection and maintenance to ensure long-term stable operation.

[0029] In summary, the sewage enrichment instrument of the present invention solves the limitations of traditional sewage drug testing technology through technological innovation and provides an efficient, accurate and simple drug tracing solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 It is a schematic diagram of the structure of the present invention after the top plate and the side plates are hidden.

[0032] Figure 3 This is a schematic structural diagram of another viewing angle of the present invention after the top plate and the side plates are hidden.

[0033] Figure 4 This is a schematic diagram of the structure from another perspective after the top plate and the side plates are hidden in the present invention, wherein the upper small picture is a partial enlarged picture of the virtual frame.

[0034] Figure 5 It is a schematic diagram of the structure of the filtration unit and the enrichment unit of the present invention.

[0035] Figure 6 It is a structural schematic diagram of the acquisition unit of the present invention.

[0036] Figure 7 It is a structural schematic diagram of the acquisition unit of the present invention from another perspective.

[0037] Figure 8 It is a schematic structural diagram of the polytetrafluoroethylene cover of the present invention.

[0038] Fig. 9 It is a schematic structural diagram of the upper chuck of the present invention.

[0039] Fig.10 It is a structural schematic diagram of the upper chuck of the present invention from another perspective.

[0040] Fig.11 It is a cross-sectional view of the upper chuck and the collecting tube of the present invention when combined, wherein the red dotted arrow is the channel diameter of the forced evaporation airflow.

[0041] Fig.12 It is a schematic structural diagram of the lower chuck of the present invention.

[0042] Fig.13 It is a cross-sectional view of the lower clamp of the present invention when combined with the collecting tube.

[0043] Fig.14 It is a schematic diagram of the elastic support, motor, vibration plate and drive shaft structure of the present invention.

[0044] Numbers in the figure: panel 100, concentration hole 101, water sample collection hole 102, second strip hole 103, filtration hole 104, enrichment hole 105, water inlet 106, waste liquid outlet 107; concentration unit 200, concentration shell 201, upper clamp 202, outer limit ring 2021, inner limit table 2022, abutting spoke plate 2023, sample enrichment liquid channel 2024, forced evaporation air flow channel 2025, re-solution channel 2026, lower clamp 203, cylindrical elastic body 2031, bell mouth 2032, driving groove 2033, collection tube 204, fan 205, air duct 206, motor 207, vibration plate 208, driving shaft 209, Elastic support-210, temperature controller-211; collection unit-300, water sample quantitative cup-301, water sample collection shell-302, fixed plate-303, long hole-3031, first guide rail-304, first slider-305, mounting block-306, sample inlet tube-307, sample outlet tube-308, electrode-309, handle-310; peristaltic pump-400; filter unit-500, filter-501, filter shell-502, fixed angle plate-561, second guide rail-562, second slider-563, movable angle plate-564, heavy cabinet door rebounder-565, filter lower seat-503, filter upper seat-504; enrichment unit-600, extraction column-601, enrichment shell-602, extraction column lower seat-603, Extraction column upper base-604; quadruple reagent tank-700, polytetrafluoroethylene tank body-701, polytetrafluoroethylene cover-703, screw hole-705, latex duckbill valve-707, polytetrafluoroethylene hexagonal stud-708, air hole-709, liquid level sensor-711, nine-channel injection pump-800, lithium ion battery pack-900. DETAILED DESCRIPTION

[0045] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.

[0048] like Figure 1-14A sewage enrichment instrument for drug tracing is shown, and its casing panel 100, bottom plate and back plate are connected as one, and the top plate and two side plates are connected as one; a control unit and a power supply unit are arranged in the casing, and a peristaltic pump 400 for extracting water samples, a filtering unit 500 for removing impurities from the water sample, a collection unit 300 for volume fixing and acidifying the water sample after impurities removal, an enrichment unit 600 for enriching drugs in the water sample after volume fixing and acidification, a concentration unit 200 for concentrating the eluent after enrichment, a multi-connected reagent tank 700 for storing reagents, and in this embodiment, the multi-connected reagent tank 700 is a quadruple tank; a multi-channel injection pump 800 for driving the transfer or addition of water samples, reagents, and air between units; an extrusion rotor and an extrusion hose of the peristaltic pump 400 are arranged on the outer side of the panel 100, and holes are opened on the panel 100 corresponding to the filtering unit 500, the collection unit 300, the enrichment unit 600 and the concentration unit 200, and the operating space of each unit is formed in the hole. The peristaltic pump 400 extracts water samples from a sewage waterway or a sewage bucket through its extrusion rotor and extrusion hose. The peristaltic pump usually squeezes the hose by precisely controlling the rotation of the rotor to achieve quantitative extraction of the water sample. The extracted water sample first enters the filtration unit 500, which is responsible for removing impurities and large particulate matter in the water sample to reduce interference and contamination in subsequent processing steps. The filtered water sample is then sent to the collection unit 300, in which the water sample is fixed to a precise volume and acidified, usually by adjusting the pH value to 1-2 to adapt to subsequent chemical reactions and enrichment processes. The fixed-volume and acidified water sample enters the enrichment unit 600, where a specific enrichment technology is used to enrich the drug residues in the water sample. The drug-containing eluate obtained during the enrichment process is sent to the concentration unit 200, where the eluate is concentrated to increase the concentration of drug residues for easy detection and analysis. The multi-reagent tank 700 is used to store various reagents required, such as activators, resolvents, eluents and acid regulators, and is connected to the multi-channel injection pump 800 through a pipeline to achieve accurate delivery and addition of reagents. The multi-channel injection pump 800 is responsible for driving the transfer or addition of water samples, reagents, and air in the system to ensure accurate control and automation of the entire enrichment process. A hole is provided on the panel 100 of the casing, corresponding to the filter unit 500, the collection unit 300, the enrichment unit 600 and the concentration unit 200, and the operating space of each unit is formed in the hole, which is convenient for observation and operation. The entire enrichment process is coordinated by the control unit to ensure the accurate execution of each step and the automatic control of the process. The power supply unit provides stable power support for the entire instrument to ensure that all components work normally. The sewage enrichment instrument of this embodiment can automatically complete the enrichment process of drug residues in sewage, and has the characteristics of simplicity, portability, and high efficiency, which improves the efficiency and accuracy of drug tracing.

[0049] Each unit is described in detail below.

[0050] The water inlet pipe of the peristaltic pump 400 is connected to the water inlet 106 installed on the back plate to ensure that the water sample can smoothly enter the pump body. It is the starting point of the entire enrichment process.

[0051] The filter unit 500 includes a filter 501, a filter hole 104 is provided on the panel 100, a filter housing 502 connected to the filter hole 104 is fixedly arranged in the panel 100, and an operation space for convenient replacement of the filter 501 is formed in the filter housing 502; a fixed angle plate 561 is fixedly arranged on the inner side of the panel 100 below the filter housing 502, a second guide rail 562 with a vertical stroke is fixedly arranged on the fixed angle plate 561, the second guide rail 562 is slidably matched with a second slider 563, a movable angle plate 564 is fixedly arranged on the second slider 563, a filter lower seat 503 is fixedly arranged on the movable angle plate 564, and the filter lower seat 503 is fixedly arranged on the filter lower seat 503. 03 gap passes through the filter housing 502 and then connects to the lower end of the filter 501. The upper end of the filter housing 502 is fixed with a filter upper seat 504 suitable for connecting with the upper end of the filter 501; a heavy cabinet door rebounder 565 is fixed on the inner side of the panel 100 below the movable corner plate 564, and the telescopic rod of the heavy cabinet door rebounder 565 abuts the movable corner plate 564; the filter upper seat 504 is connected to one port of the second three-way valve, the second port of the second three-way valve is connected to the outlet pipe of the peristaltic pump 400, and the third port of the second three-way valve is connected to the pressure sensor; the filter lower seat 503 is connected to the sample inlet pipe 307 of the collection unit 300 through the pipe channel. The filter 501 is the core component of the filter unit and is responsible for intercepting impurities and particulate matter in the water sample. The filter 501 can be used once, and if the water quality is good, it can also be used multiple times to ensure the accuracy of the analysis results and avoid cross contamination. The filter hole 104 opened on the panel 100 provides a channel for installing and replacing the filter 501. The filter housing 502 connected to the filter hole 104 provides an installation space for the filter 501. The installation and removal process of the filter becomes simple and direct. The internal design of the housing allows the user to easily replace or clean the filter 501. The fixed angle plate 561 is installed on the inner side of the panel 100 below the filter housing 502, and the second guide rail 562 fixed thereon allows the second slider 563 to slide vertically thereon. The second slider 563 slides along the second guide rail 562, and the movable angle plate 564 fixed thereon can be moved to facilitate approaching or leaving the filter 501. The filter lower seat 503 is fixed on the movable angle plate 564, passes through the filter housing 502 through the gap, and is connected to the lower end of the filter 501 to form the downstream outlet of the filter channel. The filter upper seat 504 fixed at the upper end of the filter housing 502 is connected to the upper end of the filter 501 to form the upstream inlet of the filter channel. The heavy-duty cabinet door rebounder 565 is installed on the inner side of the panel 100 below the movable corner plate 564, and its telescopic rod abuts against the movable corner plate 564 to provide power for the movable corner plate 564 so that it can be opened and closed smoothly. The second three-way valve connected to the filter upper seat 504 is responsible for controlling the flow direction of the water sample. One port is connected to the outlet pipe of the peristaltic pump 400, the second port is connected to the filter 501, and the third port is connected to the pressure sensor to monitor the pressure change during the filtration process.The pressure sensor is connected to the three ports of the second three-way valve to monitor the pressure inside the filter unit to ensure that the filtration process is carried out within a safe and effective pressure range. When the pressure sensor detects that the pressure value exceeds the preset threshold, it will automatically send a signal to the controller. After receiving the signal, the controller triggers the corresponding response mechanism. The controller instructs the peristaltic pump to perform a backwashing operation, that is, to change the direction of operation of the pump. The purpose of backwashing is to promote the reverse flow of the liquid to clear the blockage in the tube channel. This preventive measure helps to prevent the blockage of the tube channel and the filter, and ensure the continuity and stability of the filtration process. The filter lower seat 503 is connected to the sample inlet tube 307 of the collection unit 300 through the tube channel to transport the filtered water sample to the next processing unit. Through the above design, the filter unit 500 not only provides an efficient water sample pretreatment stage, but also ensures the stability and repeatability of the entire filtration process through automated components and precise control. This design reduces the need for manual operation, reduces the risk of contamination, and improves the working efficiency of the entire sewage enrichment instrument. The heavy-duty cabinet door rebounder, which is a mature product on the market, is widely used in the furniture industry. The principle is similar to a cabinet door rebounder disclosed in publication number CN216641796U. When the user presses the filter lower seat 503 or the extraction column lower seat 603 described below for the first time, the telescopic rod in the heavy cabinet door rebounder 565 will play a role. The telescopic rod causes the filter lower seat or the extraction column lower seat to move down a certain distance and then stop, but it will not rebound. In this state, the user can remove the filter 501 or the extraction column 601. When the user presses the filter lower seat 503 or the extraction column lower seat 603 described below for the second time, the telescopic rod is activated again. This time, the telescopic rod will make the filter lower seat or the extraction column lower seat press against the filter or extraction column, and continue to apply a pressing force. This continuous pressing force ensures that the extraction column or filter can be sealed back in place. The whole process is designed to facilitate user operation and ensure the sealing and stability of the equipment components. Through this design, users can easily replace and install the extraction column or filter while maintaining the sealing performance of the equipment.

[0052] The collection unit 300 includes a water sample quantitative cup 301, a water sample collection hole 102 is provided on the panel 100, a water sample collection shell 302 connected to the water sample collection hole 102 is fixedly arranged in the panel 100, and an operation space for conveniently taking and placing the water sample quantitative cup 301 is formed in the water sample collection shell 302; a fixing plate 303 is fixedly arranged above the water sample collection shell 302, a first guide rail 304 with a vertical stroke is fixedly arranged on the fixing plate 303, the first guide rail 304 is slidably matched with a first slider 305, a mounting block 306 is fixedly arranged on the first slider 305, and a mounting block 306 is installed on the mounting block 306, which can be extended into or withdrawn from the upper end of the water sample collection shell 302 The sample inlet tube 307, the sample outlet tube 308 and the two electrodes 309 of the hole 3021, the length of the sample inlet tube 307 is less than the length of the sample outlet tube 308, the sample inlet tube 307 is connected to the filter lower seat 503 of the filter unit 500, the sample outlet tube 308 is connected to the 4 channels of the multi-channel injection pump 800 through a pipeline, and the two electrodes 309 are connected to the control unit for controlling the peristaltic pump 400; the first strip hole 3031 and the second strip hole 103 with overlapping length in the vertical direction are opened on the mounting block 306 and the panel 100, and the rod of the handle 310 passes through the second strip hole 103 and the first strip hole 3031 and is fixed to the mounting block 306. The water sample quantitative cup 301 is used to hold the filtered water sample and ensure that the volume of the water sample is quantitative, so as to facilitate subsequent processing and analysis. The water sample collection hole opened on the panel 100 provides a channel for access and operation of the water sample quantitative cup 301. The housing connected to the water sample collection hole 102 forms an operating space inside, which is convenient for users to take or operate the water sample quantitative cup 301, making the collection process simple and direct. The fixed plate 303 is installed above the water sample collection housing 302 to provide fixation and support for the first guide rail 304. The first guide rail 304 is installed on the fixed plate 303 and has a vertical stroke, allowing the first slider 305 to slide along it. The first slider 305 slides on the first guide rail 304, and a mounting block 306 is fixed thereon to achieve vertical movement. The mounting block 306 is fixed on the first slider 305 and is used to install the sample inlet tube 307, the sample outlet tube 308 and the electrode 309. The sample inlet tube 307 is installed on the mounting block 306, and its length is less than the sample outlet tube 308. It is connected to the filter lower seat 503 of the filter unit 500 and is used to introduce the filtered water sample into the collection unit 300. The sample outlet tube 308 is also installed on the mounting block 306 and connected to the fourth channel of the multi-channel injection pump 800 through a pipeline, so as to transport the water sample in the collection unit 300 to the subsequent processing unit.Two electrodes 309 are mounted on the mounting block 306 and connected to the control unit for controlling the peristaltic pump 400, and are used to monitor the water sample level, control the pumping action of the peristaltic pump, and prevent the water sample from overflowing; the mounting block 306 and the sewage enrichment instrument panel 100 are provided with a first strip hole 3031 and a second strip hole 103 with a vertical direction, and the rod of the handle 310 passes through the second strip hole 103 and the first strip hole 3031 and is fixedly connected to the mounting block 306. When the handle 310 is pulled up to the upper ends of the first strip hole 3031 and the second strip hole 103, the lower end of the sample outlet tube 308 is higher than the cup mouth of the water sample quantitative cup 301; when the handle 310 is pressed down to the lower ends of the first strip hole 3031 and the second strip hole 103, the lower end of the sample outlet tube 308 is close to the bottom of the water sample quantitative cup 301. When the water sample quantitative cup 301 needs to be replaced or cleaned, the mounting block 306 and its components (inlet tube, outlet tube, electrode) are lifted to the top of the water sample collection housing 302 by the lifting handle 310. After the operation is completed, the lifting handle 310 is released, and the mounting block 306 and its components slide back into the operating space through the action of the guide rail 304 and the slider 305 and return to the working position. The length of the electrode 309 is less than the length of the inlet tube 307, and the length difference between the electrode 309 and the outlet tube 308 is proportional to the volume of the water sample. This means that by adjusting the length difference between the two tubes, the required water sample volume can be changed. For example, if a larger volume of water sample needs to be collected, the electrode 309 can be adjusted upward to make the gap between it and the outlet tube 308 larger. The sample outlet tube 308 is connected to the multi-channel injection pump of the sewage enrichment instrument. The multi-channel injection pump adds an acidifier into the water sample quantitative cup 301 through the sample outlet tube 308, blows in air for mixing, or extracts an acidified water sample to supply a downstream processing unit or a processing flow. The sample outlet tube also has the function of blowing in air, which is used to mix the water sample after acid addition. In order to achieve a better aeration mixing effect, this design provides an integrated and automated water sample processing solution, which improves the efficiency and accuracy of the experiment by accurately controlling the addition and mixing of the acidifier and the extraction of the water sample. At the same time, through automated control, the need for manual operation is reduced, and the risk of operating errors is reduced. The acidifier can use a hydrochloric acid solution.

[0053] The enrichment unit 600 includes an extraction column 601, which is the core component of the enrichment unit and is used to adsorb and enrich specific substances in the water sample. The extraction column is usually filled with a solid phase extraction material, such as silica gel, a polymer or a chemically bonded phase. An enrichment hole 105 is opened on the panel 100, providing a channel for installation and replacement of the extraction column 601. An enrichment shell 602 connected to the enrichment hole 105 is fixed in the panel 100, and an operating space is formed in the enrichment shell 602 for facilitating the replacement of the extraction column 601, making the operation simple and direct. A fixed angle plate 561 is fixedly arranged on the inner side of the panel 100 below the enrichment shell 602, and a second guide rail 562 with a vertical stroke is fixedly arranged on the fixed angle plate 561, and the second guide rail 562 slidably cooperates with the second slider 563, and a movable angle plate 564 is fixedly arranged on the second slider 563, and an extraction column lower seat 603 is fixedly arranged on the movable angle plate 564, and the extraction column lower seat 603 passes through the enrichment shell 602 in a gap and is connected to the lower end of the extraction column 601; an extraction column upper seat 604 suitable for connecting with the upper end of the extraction column 601 is fixedly arranged on the upper end of the enrichment shell 602; a heavy-duty cabinet door rebounder 565 is fixedly arranged on the inner side of the panel 100 below the movable angle plate 564, and the telescopic rod of the heavy-duty cabinet door rebounder 565 abuts against the movable angle plate 564; these structures are similar to those of the above-mentioned filtration unit and are not repeated here. The extraction column upper seat 604 is connected to the 5 channels of the multi-channel injection pump 800 through the tube channel, and the nine-channel injection pump injects the activator, the acidified water sample as the eluent and the de-eluent into the extraction column 601 through the extraction column upper seat 604 to achieve effective enrichment of the target compound; the extraction column lower seat 603 is connected to one port of the first three-way valve, the second port of the first three-way valve is connected to the sample enrichment liquid channel 2024 opened in the upper chuck 202 of the concentration unit 200, and the third port of the first three-way valve is connected to the waste liquid port 107 installed on the back plate for discharging the waste liquid generated during the enrichment process. The activator can be selected as methanol, and the de-eluent can be selected as ammonia-methanol.

[0054] The concentration unit 200 includes a collecting tube 204, a concentration hole 101 is provided on the panel 100, a concentration shell 201 connected to the concentration hole 101 is fixedly arranged in the panel 100, and a concentration operation space is formed in the concentration shell 201; an upper clamp 202 is arranged at the upper end of the concentration shell 201, and a lower clamp 203 is arranged at the lower end, and the collecting tube 204 is floatingly installed between the upper clamp 202 and the lower clamp 203; the upper clamp 202 includes an outer limiting ring 2021 and an inner limiting platform 2022 that pass through the concentration shell 201 and enter the inner portion thereof, and the outer limiting ring 2021 and the inner limiting platform 2022 are connected by a plurality of abutting spokes 2023, the inner diameter of the outer limiting ring 2021 is slightly larger than the outer diameter of the collecting tube 204, the outer diameter of the inner limiting platform 2022 is slightly smaller than the inner diameter of the collecting tube 204, and the abutting spokes 2023 are connected to each other. The thickness of 023 is less than that of the outer limit ring 2021 and the inner limit platform 2022, and a sample enrichment liquid channel 2024, a forced evaporation airflow channel 2025 and a re-solution channel 2026 are opened in the upper chuck 202, and the three channels are respectively opened at the upper end face of the upper chuck 202 or the adjacent face of the upper end face and the lower end face of the inner limit platform 2022; the upper end of the collecting tube 204 abuts against one or more of the abutting spokes 2023; a fan 205 is fixedly arranged in the panel 100, and the air outlet of the fan 205 is connected to the upper end of the air duct 206, and the lower end of the air duct 206 is connected to the forced evaporation airflow channel 2025; the sample enrichment liquid channel 2024 is connected to the second port of the first three-way valve of the enrichment unit 600 through a pipeline; the re-solution channel 2026 is connected to the 6 channels of the multi-channel injection pump 800 through a pipeline. When the collecting tube 204 is to be installed, when the collecting tube 204 is pressed down, the conical arc surface of the collecting tube 204 is plastically deformed outward and downward so that the upper end of the collecting tube 204 can enter the outer limit ring 2021 of the upper clamp 202 and the outer inner limit platform 2022. After releasing the hand, the conical arc surface of the collecting tube 204 rebounds upward and inward so that the upper end of the collecting tube 204 is tightly abutted against one or more abutting spokes 2023. When the collecting tube 204 is to be removed, the reverse operation is sufficient. The forced evaporation airflow is blown into the collecting tube 204 from the forced evaporation airflow channel 2025, and after the sample enrichment liquid surface in the collecting tube 204 is reversed, it is discharged from the gap between the adjacent abutting spokes 2023. The design of the upper clamp 202 integrates the limit function and the fluid channel in one component. This design is very unique. It simplifies the structure, reduces the number of components, and improves the overall compactness and efficiency. The upper chuck 202 not only precisely controls the position of the collection tube 204, but also provides a sample enrichment liquid channel 2024, a forced evaporation air flow channel 2025 and a reconstitution solution channel 2026. The integrated design of these three channels allows multiple functions to be realized in the same component, thereby improving the convenience and efficiency of operation.By precisely designing the dimensions of the outer limit ring 2021 and the inner limit platform 2022, the stable positioning of the collection tube 204 is ensured. At the same time, the thickness of the unique abutting radial plate 2023 is less than the thickness of the limit ring and the inner limit platform, providing a channel for the evaporation airflow to flow out. This sophisticated design provides an innovative and effective sample processing solution. The design of the forced evaporation airflow channel 2025 allows the airflow to act directly on the sample in the collection tube 204, accelerating the evaporation process. The layout design of the three channels allows different fluids to be provided on demand without the need for additional pipes or components. The integrated design of the upper chuck 202 simplifies the maintenance and cleaning process of the equipment because all channels are concentrated on one component, which reduces maintenance time and cost in the field. Through the design of the concentration unit, efficient enrichment of drug components in sewage is achieved, and the detection sensitivity is improved. The loading and unloading process of the collection tube 204 is simple, and fast loading and unloading is achieved through elastic deformation, which improves the convenience of operation. The concentration unit has a compact structure, and the various components work together to reduce space occupancy and facilitate integration into existing systems. By setting a plurality of channels in the upper chuck 202, the supply of sample enrichment solution, evaporation gas flow and reconstitution solution can be accurately controlled to optimize the enrichment effect. The forced evaporation process helps to remove water from the sample, concentrate the drug components, and improve the accuracy of the test results. The design of the concentration unit provides a basis for automated control, and automated operation can be achieved by further integrating control elements. Ammonium formate-formic acid can be used as the reconstitution solution.

[0055] In another preferred embodiment, a heating wire is wound around the air duct 206, a temperature sensor is installed near the lower end of the air duct 206, a temperature controller 211 is installed on the panel 100 next to the concentration hole 101, and the temperature sensor is connected to the temperature controller 211; the lower clamp 203 includes a cylindrical elastic body 2031 that passes through the concentration shell 201 and enters therein, a bell mouth 2032 is opened at the upper end of the cylindrical elastic body 2031, the opening diameter of the bell mouth 2032 is larger than the outer diameter of the collecting tube 204, and the conical arc surface of the bell mouth 2032 abuts against the lower end of the collecting tube 204; the cylindrical elastic body 2031 passes through the concentration shell 201 with a large gap, and a driving Slot 2033; a motor 207 is installed in the panel 100 and below the concentrated shell 201, the motor shaft of the motor 207 is fixedly connected to the vibration disk 208, the drive shaft 209 is fixedly connected to the vibration disk, the vibration disk and the drive shaft 209 are not coaxial with the motor shaft of the motor 207, and the drive shaft 209 is embedded in the drive slot 2033; the upper end of the cylindrical elastic body 2031 extends outward and downward to form a skirt 2034, the lower end of the skirt 2034 abuts against the bottom wall of the concentrated shell 201, and the outer diameter of the lower end of the skirt 2034 is greater than the gap between the bottom wall of the concentrated shell 201 and the cylindrical elastic body 2031; the motor 207 is installed on the body in the panel 100 through the elastic support 210. When the temperature detected by the temperature sensor reaches the lower limit set by the temperature controller 211, the heating wire turns on the power; when the temperature detected by the temperature sensor reaches the upper limit set by the temperature controller 211, the heating wire turns off the power. Used to adjust the temperature of the forced evaporation airflow. The preferred upper limit temperature is 60°C and the lower limit temperature is 45°C. The application of hot air significantly increases the evaporation rate, making the concentration process faster. The appropriate hot air temperature can not only speed up the evaporation rate, but also not destroy the sample, which helps to maintain the stability of the active ingredients in the sample. By adjusting the temperature and flow rate of the hot air, it is possible to adapt to the situation where the liquid level in the collection tube 204 gradually decreases. The control screen 212 installed on the sewage enrichment instrument panel 100 can set the timing, duration and air volume change curve of the fan 205 when the fan 205 enters the concentration process. Accurately controlling the start-up and operation of the fan 205 helps to optimize the concentration process according to actual needs and improve efficiency. The setting of the air volume change curve provides the possibility of flexibly adjusting the air volume to meet the concentration requirements at different stages. The setting of the control screen 212 lays the foundation for realizing the automated control of the entire concentration process, helps to reduce manual intervention, and improves repeatability and reliability. Different working parameters can be set according to different sample characteristics and processing requirements, thereby enhancing the adaptability of the equipment.When the hot air concentrates the sample to the bottom of the collection tube, the motor 207 starts to rotate. Since the vibration disk and the drive shaft 209 are not coaxial with the motor shaft of the motor 207, vibrations will occur. At the same time, since the drive shaft 209 is not coaxial with the motor shaft of the motor 207, the collection tube 204 will be driven to perform circular motion. The circular motion takes the vertical line of the center of the inner limit table 2022 as the rotation axis, and the motion trajectory of the collection tube 204 forms a conical surface, so that the collection tube 204 is tilted and rotated low, and each part of its inner wall can receive the re-solution solution dripped from the re-solution solution channel of the upper chuck 202, so that the re-solution solution flows along its inner wall and is evenly distributed. At the same time, the liquid in the collection tube 204 also vortexes and swirls, so that the drug components remaining on the tube wall after the eluent evaporates can be redissolved by the re-solution solution and concentrated to the bottom of the collection tube. After several turns of rotation, it is ensured that the residual drug components in each part of the inner wall of the collection tube can be effectively redissolved and collected. The method of hot air concentration and oscillation re-dissolution not only improves the efficiency and accuracy of sample processing, but also reduces manual intervention through automated control, providing an efficient and reliable solution for sample pre-treatment of sewage drug testing. The outer diameter of the lower end of the skirt 2034 is larger than the gap between the bottom wall of the concentration shell 201 and the cylindrical elastomer 2031. Thus, the large gap between the bottom wall of the concentration shell 201 and the cylindrical elastomer 2031 is closed. The skirt 2034 also provides additional support to enhance the stability of the cylindrical elastomer 2031 in the concentration shell 201. The skirt 2034 also helps to keep the environment of the operating space clean and improve the safety of the working environment. The elastic support 210 helps to reduce the loss of vibration during the transmission process and ensure that the vibration generated by the vibration disk 208 can be effectively transmitted to the collection tube 204. By maintaining the integrity of the vibration, the uniformity and efficiency of mixing the re-solution solution with the sample residue can be improved. The elastic support 210 reduces the direct impact and vibration of the motor on the body structure when the motor is running, and prolongs the service life of the body. The use of elastic support helps to absorb and isolate noise and improve the working environment.

[0056] The multi-reagent tank 700 includes a rectangular polytetrafluoroethylene tank body 701. In this embodiment, four cylindrical cavities A, B, C and D are vertically opened on the polytetrafluoroethylene tank body 701 to respectively hold an activator, a resolvent, an eluent and an acid regulator. The reagent outlets opened at the lowest points of the cylindrical cavities A, B, C and D are connected to the 1st channel, 2nd channel, 3rd channel and 7th channel of the multi-channel injection pump 800 through pipelines; the cylindrical cavities A, B, C and D are connected to the 1st channel, 2nd channel, 3rd channel and 7th channel of the multi-channel injection pump 800 through pipelines. The upper ends of cavity B, cylindrical cavity C and cylindrical cavity D are screwed to polytetrafluoroethylene cover 703, a screw hole 705 is provided at the upper end of polytetrafluoroethylene cover 703, a light hole with a smaller diameter is provided at the bottom of screw hole 705, a latex duckbill valve 707 is installed in the light hole, a polytetrafluoroethylene hexagonal stud 708 is screwed into the screw hole 705, and an air hole 709 is provided in the axial direction of the polytetrafluoroethylene hexagonal stud 708; liquid level sensors 711 are respectively installed near the lower ends of cylindrical cavity A, cylindrical cavity B, cylindrical cavity C and cylindrical cavity D. The polytetrafluoroethylene cover ensures the sealing of each reagent cavity. A screw hole is provided at the upper end of the polytetrafluoroethylene cover, a light hole with a smaller diameter is provided at the bottom of the screw hole, and a latex duckbill valve is built in to achieve one-way flow and prevent volatilization. A polytetrafluoroethylene hexagonal stud is screwed into the screw hole, and an air hole is provided in the hexagonal stud along the axial direction to ensure gas exchange while preventing liquid leakage. The function of the liquid level sensor is to monitor the liquid level status of the reagent in each cylindrical cavity in real time, helping the operator or the automatic control system to understand the remaining amount of the reagent and replenish or replace it in time. The design of the sensor installation hole makes the installation, maintenance or replacement of the liquid level sensor 711 simple and quick.

[0057] The multi-channel syringe pump 800 of this embodiment has 9 channels, 8 of which are connected to the atmosphere, and 9 channels are connected to the waste liquid port 107 installed on the back plate through a three-way connection. The multi-channel syringe pump 800 of this embodiment has nine independent channels, each of which can be controlled separately to achieve different delivery tasks. Each channel is equipped with a valve or a similar cut-off mechanism, which can open or close the channel to control the flow of the fluid. Among them, 8 channels are connected to the atmosphere. This design allows these channels to introduce air into the system to blow air into the water sample quantitative cup 301 for mixing, reduce manual operation, improve efficiency, and reduce the risk of sample contamination caused by improper operation. 9 channels are connected to the waste liquid port 107 to achieve a unique and effective liquid processing cycle, and the specific steps are: the syringe pump first extracts the required reagents. Then, the extracted reagents are discharged into the waste liquid port through the nine-way syringe pump to prepare for the next extraction. The syringe pump extracts fresh reagents again to ensure the purity of the reagents. Then, the extracted reagents are pushed to the corresponding outlets to prepare for the next operation. Air is extracted through an eight-way syringe pump. This step helps reduce the generation of bubbles and ensures the smoothness of liquid delivery. Finally, the extracted air is pushed to the corresponding outlet to complete the gas exchange and prepare for the next liquid extraction. This process not only improves the accuracy of each liquid extraction, but also effectively avoids cross-contamination between different reagents, ensuring the accuracy and repeatability of the experiment. By precisely controlling the delivery of liquid and air, the design of the syringe pump optimizes the entire liquid handling process and improves the efficiency and safety of the operation.

[0058] In other embodiments, a 12-channel syringe pump has been used. When the redundant channels are not functionally expanded, the unused channels are blocked by plugs. The remaining channels can be used as backup and functionally expanded according to experimental requirements; or when a channel fails or requires maintenance, the backup channels can be used as emergency backup to ensure the continuity of the experiment or production process.

[0059] The power supply unit integrates a lithium-ion battery pack 900. The power supply unit has a dual-mode power supply mechanism, which allows selection between two power supply modes. When the mains power is available, the mains power is used for power supply, and the lithium-ion battery pack 900 is charged through the built-in charging channel; when the mains power supply is interrupted or unavailable, the power supply is seamlessly switched to the lithium-ion battery pack 900 to maintain continuous operation. The two power supply modes not only improve the reliability and stability of the device, but also enhance the adaptability and portability of the device, so that it can play a role in more scenarios.

[0060] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

[0061] The matters not described in detail in the present invention are the prior art or common knowledge in the field.

Claims

1. A sewage enrichment instrument for drug tracing, wherein the panel (100), the bottom plate and the back plate of the casing are connected as one, and the top plate and two side plates are connected as one; a control unit and a power supply unit are arranged in the casing, characterized in that: The housing is also provided with a peristaltic pump (400) for extracting water samples, a filtering unit (500) for removing impurities from the water samples, a collection unit (300) for fixing the volume and acidifying the water samples after the impurities are removed, an enrichment unit (600) for enriching drugs in the water samples after fixing the volume and acidifying, a concentration unit (200) for concentrating the eluent after enrichment, a multi-connected reagent tank (700) for storing reagents, and a multi-channel injection pump (800) for driving the transfer or addition of water samples, reagents, and air between the units; the extrusion rotor and the extrusion hose of the peristaltic pump (400) are arranged on the outer side of the panel (100), and holes are opened on the panels (100) corresponding to the filtering unit (500), the collection unit (300), the enrichment unit (600), and the concentration unit (200), and the operating space of each unit is formed in the hole; The filter unit (500) comprises a filter (501), a filter hole (104) is provided on the panel (100), a filter housing (502) connected to the filter hole (104) is fixedly arranged in the panel (100), and an operation space for conveniently replacing the filter (501) is formed in the filter housing (502); a fixed angle plate (561) is fixedly arranged on the inner side of the panel (100) below the filter housing (502), a second guide rail (562) having a vertical stroke is fixedly arranged on the fixed angle plate (561), the second guide rail (562) is slidably matched with a second slider (563), a movable angle plate (564) is fixedly arranged on the second slider (563), a filter lower seat (503) is fixedly arranged on the movable angle plate (564), and the filter The lower seat (503) of the filter passes through the filter housing (502) through a gap and is connected to the lower end of the filter (501); the upper end of the filter housing (502) is fixedly provided with a filter upper seat (504) suitable for connecting with the upper end of the filter (501); a heavy-duty cabinet door rebounder (565) is fixedly provided on the inner side of the panel (100) below the movable corner plate (564); the telescopic rod of the heavy-duty cabinet door rebounder (565) abuts against the movable corner plate (564); the filter upper seat (504) is connected to one port of the second three-way valve, the second port of the second three-way valve is connected to the water outlet pipe of the peristaltic pump (400), and the third port of the second three-way valve is connected to the pressure sensor; the filter lower seat (503) is connected to the sample inlet pipe (307) of the collection unit (300) through a pipe channel; The collection unit (300) comprises a water sample quantitative cup (301), a water sample collection hole (102) is provided on the panel (100), a water sample collection housing (302) connected to the water sample collection hole (102) is fixedly arranged in the panel (100), and an operation space for conveniently taking out and placing the water sample quantitative cup (301) is formed in the water sample collection housing (302); a fixing plate (303) is fixedly arranged above the water sample collection housing (302), a first guide rail (304) having a vertical stroke is fixedly arranged on the fixing plate (303), the first guide rail (304) slidably cooperates with a first slider (305), a mounting block (306) is fixedly arranged on the first slider (305), and a through hole (306) which can be extended into or withdrawn from the upper end of the water sample collection housing (302) is installed on the mounting block (306). The invention relates to a filter unit (500) having a first strip hole (3031) and a second strip hole (103) with a length in the vertical direction. The rod of the handle (310) passes through the second strip hole (103) and the first strip hole (3031) and is fixedly connected to the mounting block (306); The enrichment unit (600) comprises an extraction column (601), an enrichment hole (105) is provided on the panel (100), an enrichment shell (602) connected to the enrichment hole (105) is fixedly arranged in the panel (100), and an operation space for convenient replacement of the extraction column (601) is formed in the enrichment shell (602); a fixed angle plate (561) is fixedly arranged on the inner side of the panel (100) below the enrichment shell (602), a second guide rail (562) having a vertical stroke is fixedly arranged on the fixed angle plate (561), the second guide rail (562) is slidably matched with a second slider (563), a movable angle plate (564) is fixedly arranged on the second slider (563), an extraction column lower seat (603) is fixedly arranged on the movable angle plate (564), and a gap of the extraction column lower seat (603) passes through the enrichment shell. The lower end of the extraction column (601) is connected to the rear of the enrichment shell (602); an extraction column upper seat (604) suitable for connecting with the upper end of the extraction column (601) is fixedly provided at the upper end of the enrichment shell (602); a heavy cabinet door rebounder (565) is fixedly provided on the inner side of the panel (100) below the movable corner plate (564), and the telescopic rod of the heavy cabinet door rebounder (565) abuts against the movable corner plate (564); the extraction column upper seat (604) is connected to the 5 channels of the multi-channel injection pump (800) through the pipe channel, the extraction column lower seat (603) is connected to one port of the first three-way valve, the second port of the first three-way valve is connected to the sample enrichment liquid channel (2024) opened in the upper chuck (202) of the concentration unit (200), and the third port of the first three-way valve is connected to the waste liquid port (107) installed on the back plate; The concentration unit (200) comprises a collecting tube (204), a concentration hole (101) is provided on the panel (100), a concentration shell (201) connected to the concentration hole (101) is fixedly arranged in the panel (100), and a concentration operation space is formed in the concentration shell (201); an upper clamp (202) is arranged at the upper end of the concentration shell (201), and a lower clamp (203) is arranged at the lower end; the collecting tube (204) is floatingly installed between the upper clamp (202) and the lower clamp (203); the upper clamp (202) comprises an outer limiting ring (2021) and an inner limiting platform (2022) which pass through the concentrating shell (201) and enter the concentrating shell (201); the outer limiting ring (2021) and the inner limiting platform (2022) are connected via a plurality of abutting spokes (2023); the inner diameter of the outer limiting ring (2021) is slightly larger than the outer diameter of the collecting tube (204); the outer diameter of the inner limiting platform (2022) is slightly smaller than the inner diameter of the collecting tube (204); the thickness of the abutting spokes (2023) is less than the outer diameter of the collecting tube (204); The thickness of the limiting ring (2021) and the inner limiting platform (2022) is set, and a sample enrichment liquid channel (2024), a forced evaporation airflow channel (2025) and a re-solution channel (2026) are opened in the upper chuck (202), and the sample enrichment liquid channel (2024), the forced evaporation airflow channel (2025) and the re-solution channel (2026) are opened at the upper end surface of the upper chuck (202) or the adjacent surface of the upper end surface and the lower end surface of the inner limiting platform (2022); the collecting tube (20 4) is in contact with one or more of the contacting spokes (2023); a fan (205) is fixedly arranged in the panel (100); an air outlet of the fan (205) is connected to the upper end of the air duct (206); and a lower end of the air duct (206) is connected to the forced evaporation air flow channel (2025); the sample enrichment liquid channel (2024) is connected to the second port of the first three-way valve of the enrichment unit (600) through a pipeline; and the reconstitution solution channel (2026) is connected to the six channels of the multi-channel injection pump (800) through a pipeline.

2. A sewage enrichment device for drug tracing according to claim 1, characterized in that: The water inlet pipe of the peristaltic pump (400) is connected to the water inlet (106) installed on the back plate.

3. A sewage enrichment device for drug tracing according to claim 1, characterized in that: An electric heating wire is wound around the air duct (206); a temperature sensor is installed near the lower end of the air duct (206); a temperature controller (211) is installed on the panel (100) next to the concentration hole (101); the temperature sensor is connected to the temperature controller (211); the lower clamp (203) comprises a cylindrical elastic body (2031) that passes through the concentration shell (201) and enters the concentration shell (201); a bell mouth (2032) is provided at the upper end of the cylindrical elastic body (2031); the opening diameter of the bell mouth (2032) is larger than the outer diameter of the collection tube (204); the conical arc surface of the bell mouth (2032) abuts against the lower end of the collection tube (204); the cylindrical elastic body (2031) passes through the concentration shell (201) with a large gap; a driving spring is provided at the lower end of the cylindrical elastic body (2031); The invention relates to a motor (207) installed in the panel (100) and below the concentration shell (201); the motor shaft of the motor (207) is fixedly connected to the vibration disk (208); the driving shaft (209) is fixedly connected to the vibration disk; the vibration disk and the driving shaft (209) are not coaxial with the motor shaft of the motor (207); the driving shaft (209) is embedded in the driving groove (2033); the upper end of the cylindrical elastic body (2031) extends outward and downward to form a skirt (2034); the lower end of the skirt (2034) abuts against the bottom wall of the concentration shell (201); the outer diameter of the lower end of the skirt (2034) is larger than the gap between the bottom wall of the concentration shell (201) and the cylindrical elastic body (2031); the motor (207) is installed on the body in the panel (100) through the elastic support (210).

4. A sewage enrichment device for drug tracing according to claim 1, characterized in that: The multi-reagent tank (700) is a quadruple reagent tank, comprising a rectangular polytetrafluoroethylene tank body (701), on which four cylindrical cavities A for holding an activator, a cylindrical cavity B for holding a resolvent, a cylindrical cavity C for holding an eluent, and a cylindrical cavity D for holding an acid-adjusting agent are vertically provided, and reagent outlets provided at the lowest points of the cylindrical cavity A, the cylindrical cavity B, the cylindrical cavity C, and the cylindrical cavity D are connected to channel 1, channel 2, channel 3, and channel 7 of a multi-channel injection pump (800) through pipelines; the cylindrical cavity A, the cylindrical cavity B, the cylindrical cavity C, and the cylindrical cavity D are connected to the cylindrical cavity A, the cylindrical cavity B, the cylindrical cavity C, and the cylindrical cavity D; A polytetrafluoroethylene cover (703) is screwed to the upper end of the cylindrical cavity D, a screw hole (705) is provided at the upper end of the polytetrafluoroethylene cover (703), a light hole with a diameter smaller than that of the screw hole (705) is provided at the bottom of the screw hole (705), a latex duckbill valve (707) is installed in the light hole, a polytetrafluoroethylene hexagonal stud (708) is screwed into the screw hole (705), and an air hole (709) is provided in the polytetrafluoroethylene hexagonal stud (708) along the axial direction; liquid level sensors (711) are respectively installed near the lower ends of the cylindrical cavity A, the cylindrical cavity B, the cylindrical cavity C and the cylindrical cavity D.

5. The sewage enrichment device for drug tracing according to claim 1 is characterized in that: The channels of the multi-channel injection pump (800) can be blocked or connected, wherein channel 8 is connected to the atmosphere, channel 9 is connected to a waste liquid port (107) mounted on the back plate via a tee, and unused channels are blocked via plugs.

6. A sewage enrichment device for drug tracing according to claim 1, characterized in that: The power supply unit integrates a lithium-ion battery pack (900). The power supply unit has a dual-mode power supply mechanism, allowing selection between two power supply modes. When the mains power is available, the mains power is used for power supply, and the lithium-ion battery pack (900) is charged through a built-in charging channel. When the mains power supply is interrupted or unavailable, the power supply is seamlessly switched to the lithium-ion battery pack (900) to maintain continuous operation.

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