Anti-counterfeiting detection device and sampling device

Abstract

This invention discloses an anti-counterfeiting detection device and a sampling device for detecting whether a sealing cap on a sampling container has been opened. The anti-counterfeiting detection device includes at least one retractable movable part and a protrusion on the sampling container. The movable part is installed inside the sealing cap, protruding from the sealing cap and extending toward the sampling container, and is detachably contactable with the protrusion of the sampling container. The anti-counterfeiting detection device of this invention, installed inside the sealing cap and equipped with at least one retractable movable part, interrupts the detection signal when the sealing cap is opened under unauthorized conditions, thereby determining that the sample liquid in the sampling container is invalid.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring technology, and in particular, to an anti-counterfeiting detection device and a sampling device. Background Technology

[0002] In recent years, with the continuous development of my country's social economy and the expansion of urban areas, more toxic and harmful substances have been indiscriminately discharged into rivers, lakes, and oceans, seriously endangering people's lives, drinking water safety, and their own health. Currently, environmental monitoring departments mainly rely on manual sampling, which suffers from limited sampling frequency, high manpower and material resources investment, significant safety hazards, and long sampling cycles. The water quality sampling method has become a bottleneck restricting the development and evaluation of environmental monitoring.

[0003] In water quality monitoring, the authenticity and representativeness of water samples directly impact the analytical results. Accurate acquisition of water pollution information depends not only on the quality control of the water quality monitoring laboratory but also on the assurance of source water quality and quality at every stage of the sampling process. In a sense, the authenticity and validity of the sampled water directly affect the monitoring results. However, in actual monitoring operations, numerous cases of falsifying environmental monitoring data have been exposed, such as diluting the sampled source and arbitrarily replacing the sample source solution. Ensuring the authenticity and representativeness of the water samples after sampling remains a challenging problem in the field of water quality monitoring. Summary of the Invention

[0004] This invention provides an anti-counterfeiting detection device and a sampling device to solve the technical problem that existing sampling devices cannot guarantee the authenticity and validity of the sample liquid in the sampling container after sampling.

[0005] According to one aspect of the present invention, an anti-counterfeiting detection device is provided for detecting whether a sealing cap on a sampling container has been opened. The anti-counterfeiting detection device includes at least one retractable movable part and a protrusion provided on the sampling container. The movable part is installed inside the sealing cap, protruding from the sealing cap toward the sampling container and is configured to be separably contacted with the protrusion of the sampling container.

[0006] Furthermore, the anti-counterfeiting detection device includes a detection circuit installed inside the sealed cover and a tactile switch for controlling the on / off state of the detection circuit. By utilizing the squeezing force between the sealed cover and the sampling container when the cover is closed, the two ends of the movable part are respectively pressed against the tactile switch and the sampling container, triggering the tactile switch and forming a closed loop in the detection circuit, thereby determining that the sealed cover and the sampling container are in a closed state. When the sealed cover is loose or opened, the movable part separates from the tactile switch, causing the detection circuit to disconnect, thereby determining that the sealed cover and the sampling container are in an open state.

[0007] Furthermore, the anti-counterfeiting detection device also includes a communication module connected to the detection circuit for transmitting detection information.

[0008] Furthermore, the anti-counterfeiting detection device also includes a display module connected to the detection circuit for displaying detection information.

[0009] Furthermore, the active part includes a pressure drive shaft, which uses the squeezing force between the sealed cover and the sampling container when the cover is closed to cause both ends of the pressure drive shaft to abut against the tactile switch and the sampling container, respectively.

[0010] Furthermore, the movable part also includes a spring sleeved on the pressure transmission shaft, with the top end of the spring abutting against the sealing cover and the bottom end of the spring abutting against the pressure transmission shaft.

[0011] Furthermore, the active part also includes a trigger ball installed inside the sealing cover and abutting against the pressure transmission shaft. The bottom surface of the sealing cover in contact with the sampling container is provided with a through hole with a diameter smaller than that of the trigger ball, so that the trigger ball protrudes from the through hole.

[0012] Furthermore, it also includes an anti-tamper mechanism installed within the sealing cap for active connection with the sampling container.

[0013] Furthermore, the anti-tampering mechanism includes a lifting and locking unit installed inside the sealing cover and a limiting plate that covers the mouth of the sampling container and is movably connected to the movable end of the lifting and locking unit. The bottom surface of the limiting plate is provided with a limiting groove in the radial direction, and the inner wall surface of the mouth of the sampling container is provided with a limiting block that matches the limiting groove.

[0014] According to another aspect of the present invention, a sampling device is also provided, including a sampling container, a sealing cap, and the aforementioned anti-counterfeiting detection device.

[0015] The present invention has the following beneficial effects:

[0016] The anti-counterfeiting detection device of the present invention is installed inside a sealed cover and is provided with at least one retractable movable part. When the sealed cover is opened, the movable part extends into the sampling container and protrudes from the contact surface between the sealed cover and the sampling container, thereby determining that the sealed cover is in the open state, and thus determining that the sample liquid in the sampling container is invalid.

[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the anti-counterfeiting detection device according to a preferred embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the anti-counterfeiting detection device according to another embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the anti-counterfeiting detection device according to another embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the anti-counterfeiting detection device according to another embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the anti-tamper mechanism according to a preferred embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the anti-tamper mechanism according to a preferred embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the anti-tamper mechanism according to a preferred embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the anti-tamper mechanism according to a preferred embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the sampling device according to a preferred embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the sampling device according to a preferred embodiment of the present invention;

[0029] Figure 11 This is an overall schematic diagram of the sampling device according to a preferred embodiment of the present invention;

[0030] Figure 12 This is a schematic diagram of the sampling device in use according to a preferred embodiment of the present invention;

[0031] Figure 13 This is a schematic diagram of the sampling device according to another embodiment of the present invention;

[0032] Figure 14 This is a schematic diagram of the switching component of a sampling device according to another embodiment of the present invention;

[0033] Figure 15 This is an overall schematic diagram of the sampling device according to a preferred embodiment of the present invention;

[0034] Figure 16 This is a sample introduction state diagram of the sampling device according to a preferred embodiment of the present invention;

[0035] Figure 17This is a diagram showing the sealed state of the sampling device according to a preferred embodiment of the present invention;

[0036] Figure 18 This is a schematic diagram of the sampling device according to another embodiment of the invention.

[0037] Legend:

[0038] 1. Sampling container; 2. Sealing cap; 3. Top cover; 4. First channel; 5. Second channel; 6. Lifting drive unit; 7. Fixing plate; 8. Piston; 9. Power module; 10. Rotation drive unit; 11. Switching plate; 12. Cover plate; 13. Control board; 14. Pressure transmission shaft; 15. Spring; 16. Tactile switch; 17. Trigger ball; 18. Counterweight; 19. Pressure measuring module; 20. Pressure measuring chamber; 21. Protrusion; 22. Limiting block; 23. Limiting groove; 24. Flow channel; 25. Anti-counterfeiting magnetic strip; 26. Strong magnetic column; 27. Induction circuit; 28. Magnetic induction switch; 29. ​​Lifting locking unit; 30. Pin rod; 31. Pin hole; 32. Limiting plate. Detailed Implementation

[0039] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0040] Figure 1 This is a schematic diagram of the anti-counterfeiting detection device according to a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the anti-counterfeiting detection device according to another embodiment of the present invention; Figure 3 This is a schematic diagram of the anti-counterfeiting detection device according to another embodiment of the present invention; Figure 4 This is a schematic diagram of the anti-counterfeiting detection device according to another embodiment of the present invention; Figure 5 This is a schematic diagram of the anti-tamper mechanism according to a preferred embodiment of the present invention; Figure 6 This is a schematic diagram of the anti-tamper mechanism according to a preferred embodiment of the present invention; Figure 7 This is a schematic diagram of the anti-tamper mechanism according to a preferred embodiment of the present invention; Figure 8 This is a schematic diagram of the anti-tamper mechanism according to a preferred embodiment of the present invention; Figure 9 This is a schematic diagram of the sampling device according to a preferred embodiment of the present invention; Figure 10 This is a schematic diagram of the sampling device according to a preferred embodiment of the present invention; Figure 11 This is an overall schematic diagram of the sampling device according to a preferred embodiment of the present invention; Figure 12 This is a schematic diagram of the sampling device in use according to a preferred embodiment of the present invention; Figure 13 This is a schematic diagram of the sampling device according to another embodiment of the present invention; Figure 14 This is a schematic diagram of the switching component of a sampling device according to another embodiment of the present invention; Figure 15This is an overall schematic diagram of the sampling device according to a preferred embodiment of the present invention; Figure 16 This is a sample introduction state diagram of the sampling device according to a preferred embodiment of the present invention; Figure 17 This is a diagram showing the sealed state of the sampling device according to a preferred embodiment of the present invention; Figure 18 This is a schematic diagram of the sampling device according to another embodiment of the invention.

[0041] like Figure 1-2 As shown, the anti-counterfeiting detection device of this embodiment is used to detect whether the sealing cap 2 on the sampling container 1 has been opened. The anti-counterfeiting detection device includes at least one retractable movable part and a protrusion 21 provided on the sampling container 1. The movable part is installed inside the sealing cap 2, protruding from the sealing cap 2 and extending toward the sampling container 1, and is detachably contactable with the protrusion 21 of the sampling container 1. The anti-counterfeiting detection device of the present invention is installed inside the sealing cap 2 and is provided with at least one retractable movable part. When the sealing cap 2 is opened, the movable part extends toward the sampling container 1 and protrudes from the contact surface between the sealing cap 2 and the sampling container 1, thereby determining that the sealing cap 2 is in an open state, and therefore determining that the sample liquid in the sampling container 1 is invalid.

[0042] The anti-counterfeiting detection device also includes a detection circuit installed inside the sealing cover 2 and a tactile switch 16 for controlling the on / off state of the detection circuit. When the sealing cover 2 and the sampling container 1 are closed, the two ends of the movable part press against the tactile switch 16 and the sampling container 1 respectively, triggering the tactile switch 16 and forming a closed loop in the detection circuit, thus determining that the sealing cover 2 and the sampling container 1 are closed. When the sealing cover 2 and the sampling container 1 are open, the movable part separates from the tactile switch 16, disconnecting the detection circuit, thus determining that the sealing cover 2 and the sampling container 1 are open. When the sealing cover 2 and the sampling container 1 are closed, the movable part is compressed and retracts upward against the tactile switch 16. When the sealing cover 2 is loosened, the pressure on the movable part decreases, causing it to extend downward and separate from the tactile switch 16.

[0043] like Figure 3-4As shown, in another embodiment, the anti-counterfeiting detection device includes a sensing circuit 27 disposed within the sealing cover 2, a permanent magnet disposed on the sampling container 1, and a magnetic induction switch 28 disposed within the sealing cover 2 and corresponding to the permanent magnet for controlling the on / off state of the sensing circuit 27. The anti-counterfeiting detection device of the present invention, by providing a sensing circuit 27 within the sealing cover 2 and a magnetic induction switch 28 controlling the on / off state of the sensing circuit 27, and by providing a permanent magnet on the sampling container 1, and by having the permanent magnet on the sampling container 1, when the sealing cover 2 is closed, the position of the permanent magnet on the sampling container 1 corresponds to the position of the magnetic induction switch 28 within the sealing cover 2. Therefore, the magnetic induction switch 28 closes under the magnetic field of the permanent magnet, thereby connecting the sensing circuit 27, thus determining that the sealing cover 2 is closed. When the sealing cover 2 is loosened and rotated a certain angle or separated from the sampling container 1, the relative position between the magnetic induction switch 28 and the permanent magnet changes. When the magnetic induction switch 28 disconnects from the magnetic field of the permanent magnet, the induction circuit 27 is disconnected, thus determining that the sealing cover 2 is in a loose or open state. Alternatively, the magnetic induction switch 28 disconnects under the influence of the magnetic field of the permanent magnet, thus disconnecting the induction circuit 27, thus determining that the sealing cover 2 is in a closed state. When the sealing cover 2 is loosened and rotated a certain angle or separated from the sampling container 1, the relative position between the magnetic induction switch 28 and the permanent magnet changes, and the magnetic induction switch 28 disconnects from the magnetic field of the permanent magnet and closes, thus connecting the induction circuit 27, thus determining that the sealing cover 2 is in a loose or open state, and therefore determining that the sample liquid in the sampling container 1 is invalid. In addition, the sealing cover 2 is threadedly connected to the sampling container 1. The sealing cover 2 is opened or tightened after rotating in the opposite direction a fixed number of turns, and the state of the magnetic induction switch 28 changes during the rotation of the sealing cover 2. Therefore, the number of turns of the sealing cover 2 is determined by the number of times the magnetic induction switch 28 is switched on and off, thus determining the degree of loosening or whether the sealing cover 2 is fully tightened.

[0044] A permanent magnet is installed on the inner wall of the sampling container 1, the outer wall of the sampling container 1, and / or on the protrusion 21 of the sampling container 1 that contacts the sealing cap 2. The permanent magnet includes an anti-counterfeiting magnetic strip 25 and / or a strong magnetic column 26. Optionally, the inner wall of the sampling container 1 has a groove for installing the anti-counterfeiting magnetic strip 25. Optionally, the outer side of the sampling container 1 has a protrusion 21 that contacts the sealing cap 2, and the strong magnetic column 26 is installed on the protrusion 21.

[0045] like Figure 1-2As shown, the anti-counterfeiting detection device also includes a communication module connected to the detection circuit for transmitting detection information. The communication module transmits information indicating that the detection circuit is disconnected to a remote management platform, thereby determining whether the sealing cover 2 has been opened. Optionally, the anti-counterfeiting detection device also includes a display module connected to the detection circuit for displaying detection information. The display module indicates whether the sealing cover 2 has been opened. Optionally, the anti-counterfeiting detection device also includes a sound module connected to the detection circuit for identifying detection information. The sound module's voice or ringtone indicates whether the sealing cover 2 has been opened. In this embodiment, the detection circuit and communication module, among other electronic components, are all located on a control board 13 inside the sealing cover 2. A power module 9 connected to the control board 13 is also installed inside the sealing cover 2.

[0046] The communication module is located in an area above or near the liquid surface on the sampling container 1, where it can transmit signals after sampling. In this embodiment, after sampling, the communication module is positioned above or at least 25 cm below the liquid surface to transmit the sampling signal to the remote management platform. Optionally, the communication module includes a 3G / 4G / 5G module, an NB-IoT module, an eMTC module, a LoRa module, or a Sigfox module, thereby enabling real-time remote transmission of detection parameters to the remote management platform; alternatively, the communication module can be an NFC module, a Bluetooth module, a Wi-Fi module, or a Zigbee module, allowing personnel to bring the management terminal to the site and establish a wireless connection with the communication module to wirelessly read the monitoring data stored in the control module. Furthermore, in other embodiments of the invention, the communication module can be omitted; after the sampling container 1 is retrieved from the water environment, the monitoring data in the control module can be directly read via an interface using the management terminal.

[0047] The movable part includes a pressure drive shaft 14. By utilizing the pressure between the sealing cap 2 and the sampling container 1 when the cap is closed, the two ends of the pressure drive shaft 14 abut against the tactile switch 16 and the sampling container 1, respectively. When the sealing cap 2 loosens, the pressure drive shaft 14 moves downward under its own gravity and separates from the tactile switch 16.

[0048] The movable part also includes a spring 15 sleeved on the pressure transmission shaft 14. The top end of the spring 15 abuts against the sealing cover 2, and the bottom end of the spring 15 abuts against the pressure transmission shaft 14. When the sealing cover 2 is loosened, the pressure transmission shaft 14 quickly separates from the tactile switch 16 under its own gravity and the elastic restoring force of the spring 15.

[0049] The active part also includes a trigger ball 17 installed inside the sealing cover 2 and abutting against the pressure transmission shaft 14. The sealing cover 2 has a through hole on its contact surface with the sampling container 1, with a diameter smaller than that of the trigger ball 17, allowing the trigger ball 17 to protrude from the through hole. When the sealing cover 2 is closed, the trigger ball 17 is pressed upwards by the sampling container 1, which in turn pushes the pressure transmission shaft 14 upwards and against the tactile switch 16, closing the detection circuit. When the sealing cover 2 is loosened, the trigger ball 17 is released downwards, causing the pressure transmission shaft 14 to move downwards and separate from the tactile switch 16, thus disconnecting the detection circuit.

[0050] like Figure 1 and Figure 2 As shown, the sealing cap 2 includes an inner cap that covers the sampling container 1 and an outer cap connected to the inner cap. An anti-counterfeiting detection device is installed inside the outer cap, and a sliding groove for the telescopic movement of the movable part is provided between the inner and outer caps. As shown in the figure, in this embodiment, a trigger ball 17 is installed at the bottom of the sliding groove, and the bottom of the sliding groove has a through hole for the trigger ball 17 to protrude. The top end of the pressure transmission shaft 14 passes through the sliding groove and abuts against the tactile switch 16, while the bottom end of the pressure transmission shaft 14 abuts against the trigger ball 17. The top end of the sliding groove has a top plate for abutting against the top end of the spring 15. The pressure transmission shaft 14 has a bottom plate for abutting against the bottom end of the spring 15. By utilizing the squeezing force between the sealing cap 2 and the sampling container 1 in the closed state, both ends of the pressure transmission shaft 14 abut against the tactile switch 16 and the trigger ball 17 respectively, causing the trigger ball 17 to protrude and abut against the sampling container 1. The trigger ball 17 and the sampling container 1 are in point-to-surface contact, thus making the loosening of the sealing cap 2 more sensitive. As shown in the figure, in another embodiment, the pressure drive shaft 14 passes through a groove. A through hole is provided at the bottom of the groove. The bottom end of the pressure drive shaft 14 has a stop to prevent it from falling out of the groove and a protruding ball connected to the stop for protruding through the through hole. By utilizing the pressure between the sealing cap 2 and the sampling container 1 when closed, the top end of the pressure drive shaft 14 passes through the groove and abuts against the tactile switch 16, while the protruding ball at the bottom end of the pressure drive shaft 14 passes through the groove and abuts against the sampling container 1, thereby forming a closed loop in the detection circuit.

[0051] like Figure 5-8As shown, the anti-counterfeiting detection device also includes an anti-tampering mechanism installed inside the sealing cover 2 for movably connecting with the sampling container 1. The anti-tampering mechanism includes a lifting locking unit 29 installed inside the sealing cover 2 and a limiting plate 32 that covers the container opening of the sampling container 1 and is movably connected to the movable end of the lifting locking unit 29. The bottom surface of the limiting plate 32 has a radially arranged limiting groove 23, and the inner wall of the container opening of the sampling container 1 has a limiting block 22 that matches the limiting groove 23. At least one pin 30 is installed on the movable end of the lifting locking unit 29, and the limiting plate 32 has a pin hole 31 that matches the pin 30. The lifting locking unit 29 drives the pin 30 to descend and insert it into the pin hole 31 to connect with the limiting plate 32, thereby circumferentially limiting the sealing cover 2 through the limiting plate 32. Multiple limiting blocks 22 are evenly arranged circumferentially along the container opening of the sampling container 1. The limiting groove 23 is arranged radially along the limiting plate 32. When the sealing cap 2 is placed on the sampling container 1, the limiting groove 23 on the limiting plate 32 matches the limiting block 22 on the sampling container 1. By controlling the lifting and locking unit 29, the pin 30 is driven to descend and insert into the pin hole 31 of the limiting plate 32 to connect with the limiting plate 32. Thus, the limiting plate 32 circumferentially limits the sealing cap 2. Since the limiting groove 23 matches the limiting block 22, the sealing cap 2 cannot be loosened by rotating circumferentially, thus locking and fixing the sealing cap 2 in the closed state. When it is necessary to open the sealing cap 2 to test the sample liquid in the sampling container 1, the lifting and locking unit 29 is controlled to drive the pin 30 to rise and move out of the pin hole 31 to separate from the limiting plate 32. Then, the sealing cap 2 is rotated to separate from the sampling container 1. Finally, the limiting plate 32 is removed for sampling and testing.

[0052] In summary, the anti-counterfeiting detection device installed between the sampling container 1 and the sealing cap 2 can effectively identify and record whether the sealing cap 1 is open. This allows for easy determination of whether the sealing cap 2 is separated from the sampling container 1 after sampling, thus determining whether the sample liquid inside the sampling container 1 is open. The anti-tampering mechanism inside the sealing cap 2, which is used for movable connection with the sampling container 1, prevents the possibility of opening the sealing cap 2 to replace or dilute the sample liquid after sampling, thereby ensuring the authenticity, validity, and representativeness of the sample liquid inside the sampling container 1.

[0053] like Figure 9-18As shown, the sampling device of this embodiment includes the aforementioned anti-counterfeiting detection device. The sampling device of this embodiment includes a sampling container 1, a sealing cap 2, and the aforementioned anti-counterfeiting detection device. By using the anti-counterfeiting detection device positioned between the sealing cap 2 and the sampling container 1, it is possible to automatically identify whether the sampling container 1 and the sealing cap 2 have separated after sampling, thereby determining the validity of the sample liquid inside the sampling container 1. The anti-counterfeiting detection device prevents the tampering of the sample liquid after the sampling container 1 has been opened, ensuring that the sample liquid inside the sampling container 1 is not affected by external factors, such as replacement or dilution, after sampling is completed. This ensures the authenticity of the sample liquid from the source, thereby ensuring the validity of the water quality monitoring data.

[0054] like Figure 9-14 As shown, the sampling device of this embodiment includes a sampling container 1, a sealing cap 2 covering the sampling container 1, and a communicating channel on the sealing cap 2 that communicates with the inner cavity of the sampling container 1. The sealing cap 2 includes a switching component fixed inside and arranged along the path of the communicating channel, which can be disconnected or connected to the communicating channel. It also includes an anti-counterfeiting detection device disposed inside the sampling container 1 and arranged between the sampling container 1 and the sealing cap 2. The anti-counterfeiting detection device includes at least one retractable movable part. The sampling container 1 has a protrusion 21, which protrudes from the sealing cap 2 and extends toward the sampling container 1, and is detachably contactable with the protrusion 21 of the sampling container 1. In this embodiment, the protrusion 21 is located outside the container opening of the sampling container 1 and below the movable part. The sampling device provided by this invention allows the sample liquid to enter the sampling container 1 through a connecting channel opened on the sealing cap 2. A switching component arranged along the sampling channel allows for easy isolation or connection of the sampling channel, enabling on-demand sampling of the sampling container 1 and meeting the requirements of different operating scenarios. After sampling, the sampling channel is isolated and sealed, ensuring the airtightness of the sampling container 1. An anti-counterfeiting detection device positioned between the sealing cap 2 and the sampling container 1 automatically identifies whether the sampling container 1 and the sealing cap 2 have separated after sampling, thereby determining the validity of the sample liquid inside the sampling container 1. Thus, the switching component arranged along the sampling channel prevents the falsification of the sample liquid from the sampling channel, and the anti-counterfeiting detection device prevents falsification of the sample liquid after the sampling container 1 has been opened. This ensures that the sample liquid inside the sampling container 1 is not affected by external factors, such as replacement or dilution, after sampling, ensuring the authenticity of the sample liquid from the source and thus ensuring the validity of the water quality monitoring data.

[0055] The connecting channels include a first channel 4 and a second channel 5. When the switching component is connected to the first channel 4 and the second channel 5, the sample liquid enters the sampling container 1 through the first channel 4, and the gas in the sampling container 1 is discharged to the outside through the second channel 5, thus initiating sample injection. When the switching component disconnects the first channel 4 and the second channel 5, sample injection is stopped. Specifically, the switching component controls the opening of the channel interface of the first channel 4 and the channel interface of the second channel 5, making the first channel 4 and the second channel 5 connected to the inner cavity of the sampling container 1. Since a pressure difference is formed between the inner cavity of the sampling container 1 and the sample liquid surface after the sample liquid is emptied, the sample liquid enters the inner cavity of the sampling container 1 through the first channel 4 and / or the second channel 5, realizing sample injection. When the switching component is switched to the disconnected state with the first channel 4 and the second channel 5, the inner cavity of the sampling container 1 forms a sealed space, thus stopping sample injection and completing the sample collection.

[0056] Optionally, by controlling the opening of the inlet of the first channel 4 and the outlet of the second channel 5 through the switching component, the sample liquid enters the inner cavity of the sampling container 1 through the first channel 4, and the gas in the inner cavity of the sampling container 1 is discharged through the second channel 5, thereby starting the sample injection; by controlling the closing of the inlet of the first channel 4 and the outlet of the second channel 5 through the switching component, the sample liquid cannot enter the sampling container 1 from the first channel 4 and the second channel 5, and the sample liquid collected in the sampling container 1 is prevented from flowing out from the first channel 4 and the second channel 5, thereby stopping the sample injection and completing the sample collection. Optionally, by controlling the opening of the sample outlet of the first channel 4 and the air inlet of the second channel 5 through the switching component, the sample liquid enters the inner cavity of the sampling container 1 through the first channel 4, and the gas in the inner cavity of the sampling container 1 is discharged through the second channel 5, thereby starting the sample injection; by controlling the closing of the sample inlet of the first channel 4 and the air outlet of the second channel 5 through the switching component, the sample liquid cannot enter the sampling container 1 from the first channel 4 and the second channel 5, and the sample liquid collected in the sampling container 1 is prevented from flowing out from the first channel 4 and the second channel 5, thereby stopping the sample injection and completing the sample collection.

[0057] Optionally, the switching assembly includes a lifting drive unit 6 installed inside the sealing cover 2, a fixing plate 7 installed on the output end of the lifting drive unit 6, two pistons 8 installed on the fixing plate 7, a power module 9 connected to the input end of the lifting drive unit 6, and a control module for controlling the start and stop of the lifting drive unit 6. The lifting drive unit 6 drives the fixing plate 7 to rise, causing the two pistons 8 to disengage from the sample inlet of the first channel 4 and the internal pipe of the second channel 5 respectively to start sample injection. The lifting drive unit 6 drives the fixing plate 7 to fall, causing the two pistons 8 to insert into the internal pipe of the first channel 4 and the internal pipe of the second channel 5 respectively to stop sample injection. Alternatively, the lifting drive unit 6 drives the fixing plate 7 to fall, causing the two pistons 8 to disengage from the sample outlet of the first channel 4 and the internal pipe of the second channel 5 respectively to start sample injection. The lifting drive unit 6 drives the fixing plate 7 to rise, causing the two pistons 8 to insert into the internal pipe of the first channel 4 and the internal pipe of the second channel 5 respectively to stop sample injection.

[0058] In this embodiment, the sealing cap 2 is also provided with a pressure measuring chamber 20 that communicates with the sample inlet of the first channel 4. The sampling container 1 also includes a top cover 3 for mounting the fixing plate 7 on top of the sealing cap 2, and an air hole is provided between the top cover 3 and the sealing cap 2. The air hole communicates with the first channel 4 and / or the second channel 5. Under the action of the cavity switching component, it can be isolated or connected to the inner cavity of the sampling container 1. In this way, through the air hole communicating with the first channel 4 and / or the second channel 5, when the first channel 4 and / or the second channel 5 is below the liquid surface, it avoids the sample liquid forming a liquid column inside the pipe of the first channel 4 and / or the second channel 5. The air-tight stable state formed in the inner cavity of the sampling container 1 ensures that the inner cavity of the sampling container 1 can always smoothly flow gas and / or liquid with the outside, thereby ensuring the stability of the sample injection.

[0059] The bottom of the sealing cover 2 is provided with a cover plate 12 for covering the opening of the sampling container 1. The sample outlet of the first channel 4 is connected to the cover plate 12, and the air inlet of the second channel 5 is connected to the cover plate 12. The lifting drive unit 6 is installed inside the sealing cover 2, and the output end of the lifting drive unit 6 passes through the top of the sealing cover 2 and is connected to the fixing plate 7 installed inside the top cover 3. The fixing plate 7 is equipped with an injection piston 8 and an exhaust piston 8. The sealing cover 2 is provided with an injection piston hole for the injection piston 8 to pass through and an exhaust piston hole for the exhaust piston 8 to pass through. The second channel 5 is connected to the exhaust piston hole, and the exhaust piston hole and the exhaust piston 8 are clearance-fitted so that the inner cavity of the top cover 3 is connected to the second channel 5. When sample injection begins, the injection piston 8 moves upward, disengaging from the internal pipe of the first channel 4 and inserting into the injection piston hole. The external sample liquid first enters the pressure measuring chamber 20, then enters the inner cavity of the sampling container 1 through the first channel 4. The exhaust piston 8 moves upward, disengaging from the internal pipe of the second channel 5, allowing gas from the sampling container 1 to enter the top cover 3 through the gap between the exhaust piston hole and the exhaust piston 8 in the second channel 5, and finally exit through the vent between the top cover 3 and the sealing cap 2. When sample injection stops, the injection piston 8 passes through the top of the sealing cap 2 and inserts into the internal pipe of the lower first channel 4, and the exhaust piston 8 passes through the top of the sealing cap 2 and inserts into the internal pipe of the lower second channel 5. The lifting drive unit 6 uses a lifting motor.

[0060] Optionally, the switching assembly includes a rotary drive unit 10 installed inside the sealing cover 2, a switching plate 11 connected to the output end of the rotary drive unit 10, a power module 9 connected to the input end of the rotary drive unit 10, and a control module for controlling the start and stop of the rotary drive unit 10. The bottom of the sealing cover 2 is provided with a cover plate 12 for covering the opening of the sampling container 1. The cover plate 12 has a flow port. The switching plate 11 is installed between the cover plate 12 and the connecting channel and has two flow holes. By rotating the switching plate 11 through the rotary drive unit 10, the two flow holes on the switching plate 11 are switched to be connected to or misaligned with the first channel 4 and the second channel 5 respectively. In this way, the first channel 4 and the second channel 5 are switched to be isolated from or connected to the internal cavity of the sampling container 1.

[0061] Optionally, sample injection begins when the outlet of the first channel 4 and the inlet of the second channel 5 are opposite each other. The switching plate 11 is rotated by the rotary drive unit 10 to block the outlet of the first channel 4 and the inlet of the second channel 5, thereby stopping the sample injection. Alternatively, the switching plate 11 is rotated by the rotary drive unit 10 to make the two flow holes on the switching plate 11 opposite the outlet of the first channel 4 and the outlet of the second channel 5, respectively, thereby starting the sample injection. The switching plate 11 is rotated by the rotary drive unit 10 to block the outlet of the first channel 4 and the outlet of the second channel 5, thereby stopping the sample injection.

[0062] Optionally, the switching assembly includes a rotary drive unit 10 installed inside the sealing cover 2, a switching plate 11 connected to the output end of the rotary drive unit 10, a power module 9 connected to the input end of the rotary drive unit 10, and a control module for controlling the start and stop of the rotary drive unit 10. The bottom of the sealing cover 2 is provided with a cover plate 12 for covering the opening of the sampling container 1. The cover plate 12 has two flow ports that are respectively connected to the first channel 4 and the second channel. The switching plate 11 is installed below the cover plate 12. The switching plate 11 is rotated by the rotary drive unit 10 to offset the switching plate 11 from the sample outlet of the first channel 4 and the air inlet of the second channel 5, thus initiating sample injection. The switching plate 11 is also rotated by the rotary drive unit 10 to block the sample outlet of the first channel 4 and the air inlet of the second channel 5, thus stopping sample injection. Alternatively, the switching plate 11 is rotated by the rotary drive unit 10 to offset the switching plate 11 from the sample outlet of the first channel 4 and the air outlet of the second channel 5, thus initiating sample injection. The switching plate 11 is also rotated by the rotary drive unit 10 to block the sample outlet of the first channel 4 and the air outlet of the second channel 5, thus stopping sample injection.

[0063] In another embodiment, the sampling container 1 includes a sampling container 1 and a sealing cap 2 covering the sampling container 1. A first channel 4 and a second channel 5 are both installed inside the sealing cap 2. The bottom of the sealing cap 2 is provided with a cover plate 12 for covering the opening of the sampling container 1. The sample outlet of the first channel 4 is connected to the cover plate 12, and the air inlet of the second channel 5 is connected to the cover plate 12. A rotary drive unit 10 is installed inside the sealing cap 2, and the output end of the rotary drive unit 10 passes through the cover plate 12 and is connected to a switching plate 11 below the cover plate 12. By rotating the switching plate 11 with the rotary drive unit 10, the switching plate 11 is offset from the sample outlet and air inlet on the cover plate 12 to begin sample injection. By rotating the switching plate 11 with the rotary drive unit 10, the switching plate 11 blocks the sample outlet and air inlet on the cover plate 12 to stop sample injection. The rotary drive unit 10 is a drive motor. The top of the sealing cover 2 is provided with a pressure measuring chamber 20 that communicates with the first channel 4 and the sample discharge channel, and the sealing cover 2 is provided with an air hole that communicates with the pressure measuring chamber 20.

[0064] The switching assembly also includes a pressure measuring module 19 for measuring the sample liquid pressure, which is connected to the power module 9 and the control module. The pressure measuring module 19 is installed inside the sealing cover 2, and the measuring end of the pressure measuring module 19 extends into the pressure measuring chamber 20. The pressure measuring module 19 measures the sample liquid pressure in the pressure measuring chamber 20 and transmits the pressure measurement signal to the control module. The control module determines whether the sampling device has reached the required sampling depth based on the pressure measurement signal, and then controls the sample injection.

[0065] In this design, the components inside the sealing cap 2 are biased towards the sample inlet for fixation. After the sampling container 1 is placed at the sampling point, the area near the sample inlet sinks below the liquid surface, while the exhaust port remains above the liquid surface. This allows the sample to be collected from the inlet into the sampling container 1, while the gas inside the sampling container 1 is discharged to the outside through the exhaust port. Optionally, a counterweight 18 is provided near the sample inlet on the sealing cap 2.

[0066] like Figure 15-18 As shown, another embodiment of the sampling device includes a sampling container 1 and a sealing cover 2 connected to the sampling container 1. The sealing cover 2 is machined with a flow channel 24 that communicates with the sampling container 1. It also includes a switching component fixed inside the sealing cover 2 and arranged along the path of the flow channel 24. The switching component is configured to be isolated from or connected to the flow channel 24. The sampling container 1 is a compressible structure with a variable shape, and its internal volume and / or pressure are variable. The sampling device of the present invention has a sampling container 1 connected to a sealing cap 2, and a flow channel 24 communicating with the sampling container 1 is provided on the sealing cap 2. A switching component is also arranged inside the sealing cap 2. By setting the sampling container 1 as a compressible structure with a variable shape, its internal volume and / or pressure can be varied. Therefore, before sampling, the sampling container 1 is compressed to reduce the pressure inside the sampling container 1, and the flow channel 24 is isolated from the sampling container 1 by the switching component, so that the sample liquid or other gases and impurities cannot enter the sampling container 1 through the flow channel 24. When the sampling device reaches the sampling point, the flow channel 24 is connected to the sampling container 1 by the switching component, so that the sample liquid outside is sent into the sampling container 1 through the flow channel 24 under the action of the pressure difference between the sampling container 1 and the external pressure. When the pressure inside the sampling container 1 increases to be equal to the external pressure, the sample liquid injection stops, and the flow channel 24 is isolated from the sampling container 1 by the switching component, thereby sealing and storing the quantitatively collected sample liquid in the sampling container 1. By using the switching components arranged along the flow channel 24, the falsification of the sample solution from the sampling channel is eliminated, ensuring that the sample solution in the sampling container 1 will not be affected by external factors after sampling, such as replacement or dilution, thus ensuring the authenticity of the sample solution from the source and ensuring the validity of the water quality monitoring data.

[0067] In a preferred embodiment of the present invention, the sampling container 1 is a compressible / stretchable structure, for example, the sampling container 1 is a corrugated tubular compressible structure. By compressing the sampling container 1, the volume and / or pressure inside the sampling container 1 are changed, so that a pressure difference is formed inside and outside the cavity of the sampling container 1. Then, the sample liquid is automatically and quantitatively pumped from the flow channel 24 to the inner cavity of the sampling container 1 by utilizing the pressure difference between the inside and outside of the inner cavity of the sampling container 1.

[0068] In this embodiment, the sealing cap 2 is provided with a cover plate 12 that covers the opening of the sampling container 1. The cover plate 12 has a flow port communicating with the flow channel 24. A switching assembly is installed above the cover plate 12. The switching assembly includes a lifting drive unit 6 installed inside the sealing cap 2, a piston 8 installed on the output end of the lifting drive unit 6, a power module 9 connected to the input end of the lifting drive unit 6, and a control module for controlling the start and stop of the lifting drive unit 6. The lifting drive unit 6 drives the fixed plate 7 to rise, causing the piston 8 to disengage from the inlet of the flow channel 24 and switch to the sample injection state to start sample injection. The lifting drive unit 6 drives the fixed plate 7 to fall, causing the piston 8 to enter the inlet of the flow channel 24 and switch to the sealed state to stop sample injection. Optionally, the lifting drive unit 6 drives the fixed plate 7 to fall, causing the piston 8 to disengage from the outlet of the flow channel 24 and switch to the sample injection state to start sample injection. The lifting drive unit 6 drives the fixed plate 7 to rise, causing the piston 8 to enter the outlet of the flow channel 24 and switch to the sealed state to stop sample injection.

[0069] In another embodiment, the switching assembly includes a rotary drive unit 10 within the sealing cap 2, a switching plate 11 connected to the output end of the rotary drive unit 10, a power module 9 connected to the input end of the rotary drive unit 10, and a control module for controlling the start and stop of the rotary drive unit 10. The switching plate 11 has a flow-through hole. Rotating the switching plate 11 by the rotary drive unit 10 aligns the flow-through hole on the switching plate 11 with the sample outlet of the flow channel 24, switching to a sample inlet state to begin sample inlet. Rotating the switching plate 11 by the rotary drive unit 10 also blocks the sample outlet of the flow channel 24, switching to a sealed state to stop sample inlet. Optionally, rotating the switching plate 11 by the rotary drive unit 10 aligns the flow-through hole on the switching plate 11 with the sample inlet of the flow channel 24, switching to a sample inlet state to begin sample inlet. Rotating the switching plate 11 by the rotary drive unit 10 also blocks the sample inlet of the flow channel 24, switching to a sealed state to stop sample inlet. In this embodiment, the switching plate 11 is provided with a flow passage. By rotating the switching plate 11 through the rotation drive unit 10, the flow passage, the sample outlet of the flow channel 24, and the flow port of the cover plate 12 are connected, thus switching to the sample injection state to start sample injection. By rotating the switching plate 11 through the rotation drive unit 10, the flow passage and the sample outlet of the flow channel 24 are misaligned, and the switching plate 11 is blocked between the sample outlet of the flow channel 24 and the flow port of the cover plate 12, thus switching to the sealed state to stop sample injection.

[0070] In this embodiment, the switching assembly further includes a pressure measuring module 19 connected to the power module 9 and the control module for measuring the sample liquid pressure. The sealing cover 2 has a pressure measuring chamber 20 that communicates with the outside. The pressure measuring module 19 is installed inside the sealing cover 2, with its measuring end extending into the pressure measuring chamber 20. The pressure measuring module 19 measures the sample liquid pressure within the pressure measuring chamber 20 and transmits the pressure signal to the control module. The control module determines whether the sampling device has reached the required sampling depth based on the pressure signal, and then controls the sample injection.

[0071] Optionally, the sampling container 1 and the sealing cap 2 are integrally formed.

[0072] In this embodiment, the sampling container 1 and the sealing cap 2 are separate structures. The sampling device also includes an anti-counterfeiting detection device disposed between the sampling container 1 and the sealing cap 2. The anti-counterfeiting detection device disposed between the sealing cap 2 and the sampling container 1 can automatically identify whether the sampling container 1 and the sealing cap 2 have separated after sampling. In this embodiment, a communication module for transmitting detection information, connected to the anti-counterfeiting detection device, is installed inside the sealing cap 2. The communication module transmits information indicating that the detection circuit is disconnected to a remote management platform, thereby determining whether the sealing cap 2 has been opened. Optionally, a display module for displaying detection information, connected to the anti-counterfeiting detection device, is also included. The display module indicates whether the sealing cap 2 has been opened. Optionally, a sound module for identifying detection information, connected to the anti-counterfeiting detection device, is also included. The sound module's voice or ringtone indicates whether the sealing cap 2 has been opened.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An anti-counterfeiting detection device for detecting whether the sealing cap (2) on the sampling container (1) has been opened. Its features are, The anti-counterfeiting detection device includes at least one retractable movable part and a protrusion (21) provided on the sampling container (1). The movable part is installed inside the sealing cover (2), protruding from the sealing cover (2) and extending toward the sampling container (1), and is detachably contactable with the protrusion of the sampling container (1). It also includes an anti-tampering mechanism installed inside the sealing cover (2) for movably connecting with the sampling container (1). The anti-tampering mechanism includes a lifting locking unit (29) installed inside the sealing cover (2) and a limiting plate (32) that covers the container opening of the sampling container (1) and is movably connected to the movable end of the lifting locking unit (29). The bottom surface of the limiting plate (32) is provided with a limiting groove (23) in the radial direction. The inner side wall of the container opening of the sampling container (1) is provided with a limiting block (22) that matches the limiting groove (23). At least one pin (30) is installed on the movable end of the lifting locking unit (29). The limiting plate (32) is provided with a pin hole (31) that matches the pin (30). The lifting locking unit (29) is used to drive the pin (30) down and insert it into the pin hole (31) to connect with the limiting plate (32), thereby circumferentially limiting the sealing cover (2) through the limiting plate (32).

2. The anti-counterfeiting detection device according to claim 1, characterized in that, The anti-counterfeiting detection device includes a detection circuit installed inside the sealed cover (2) and a tactile switch (16) for controlling the on / off state of the detection circuit. By utilizing the squeezing force between the sealing cap (2) and the sampling container (1) in the closed state, the two ends of the movable part are respectively pressed against the touch switch (16) and the sampling container (1), triggering the touch switch (16) to form a closed circuit in the detection circuit, thereby determining that the sealing cap (2) and the sampling container (1) are in the closed state; When the sealing cover (2) is loose or opened, the moving part separates from the tactile switch (16), causing the detection circuit to disconnect, thereby determining that the sealing cover (2) and the sampling container (1) are in the open state.

3. The anti-counterfeiting detection device according to claim 2, characterized in that, The anti-counterfeiting detection device also includes a communication module connected to the detection circuit for transmitting detection information.

4. The anti-counterfeiting detection device according to claim 2, characterized in that, The anti-counterfeiting detection device also includes a display module connected to the detection circuit for displaying detection information.

5. The anti-counterfeiting detection device according to claim 2, characterized in that, The active part includes a pressure drive shaft (14), which uses the squeezing force between the sealing cover (2) and the sampling container (1) in the closed state to make the two ends of the pressure drive shaft (14) abut against the tactile switch (16) and the sampling container (1) respectively.

6. The anti-counterfeiting detection device according to claim 5, characterized in that, The movable part also includes a spring (15) sleeved on the pressure transmission shaft (14), with the top end of the spring (15) abutting against the sealing cover (2) and the bottom end of the spring (15) abutting against the pressure transmission shaft (14).

7. The anti-counterfeiting detection device according to claim 5, characterized in that, The active part also includes a trigger ball (17) installed inside the sealing cover (2) and abutting against the pressure transmission shaft (14). The bottom surface of the sealing cover (2) is provided with a through hole with a diameter smaller than that of the trigger ball (17) so that the trigger ball (17) protrudes from the through hole.

8. A sampling device, characterized in that, It includes a sampling container (1), a sealing cap (2), and the anti-counterfeiting detection device according to any one of claims 1-7.

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