An internet of things selling system and method capable of tracing liquid goods

Abstract

The application relates to the technical field of automatic selling devices for bulk wine, bulk beverage and the like liquid, and discloses an Internet of Things selling system and method capable of tracing liquid commodities, wherein the Internet of Things selling system comprises an intelligent selling device, a container and a liquid storage device, the intelligent selling device comprises a liquid access device and a machine head; the liquid access device comprises a machine body and a liquid acquisition mechanism; the application first carries out double verification on the identity of the container, and opens a storage door after the identity verification of the container is successful; the identity of an opening and closing cover on the container is verified after the storage door is closed, and the opening and closing cover is opened after the identity verification of the opening and closing cover is successful; the identity of each socket is verified after the opening and closing cover is opened, and the liquid acquisition mechanism performs a docking operation after the identity verification of each socket is successful, so that the liquid can be stored into the selling device under the condition that no one contacts and multiple verifications are successful, and the selling liquid is provided with the guarantee of whole-process tracing, dynamic supervision and prevention of liquid pollution.

Description

Technical Field

[0001] This application relates to the technical field of automated self-service vending devices for liquids such as bulk wine and bulk beverages. More specifically, it relates to an Internet of Things (IoT) vending system and method that enables traceability of liquid products. Background Technology

[0002] The content in this section provides only background information related to this application and may not constitute prior art.

[0003] With the continuous development of vending machines, various types of vending machines have emerged, including liquid vending machines that can automatically and self-service sell bulk liquid beverages such as liquor, beer, wine, cooking oil, soy sauce, vinegar, and bulk drinks.

[0004] In related technologies, known liquid vending machines and ordinary water dispensers have roughly the same structure. Specifically, such liquid vending machines generally include a machine head with a liquid outlet and a body for storing containers. The container is used to hold the liquid to be sold and is placed in a cavity inside the body. The liquid outlet on the machine head is connected to the inside of the container by means of a suction component (usually a suction pump). Thus, during the sales process, when a user places an order through human-computer interaction, the suction component can draw out the liquid from the container so that the liquid can flow out from the liquid outlet and be obtained by the user.

[0005] Existing liquid vending machines typically use cabinets with mechanically locked doors to store the liquids, and the containers are usually covered. When the liquid in a container runs out and needs replenishment, personnel simply open the machine and the container lid to add more liquid. However, this method of storing and replenishing liquids has at least the following drawbacks: Liquids such as spirits and beer are food products that can be consumed directly, making food safety paramount. While lockable cabinets can prevent illegal tampering to some extent, in practice, containers and liquids may be switched, resulting in liquids sold that are not from the authorized party (e.g., the "manufacturer"), thus disrupting the market and potentially causing food safety incidents. Furthermore, traceability is difficult in the event of a sales incident. Summary of the Invention

[0006] To address the aforementioned shortcomings of existing technologies, this application provides an IoT vending system and method for tracing the origin of liquid products. The IoT vending system includes a smart vending device, a container, and a liquid storage device. The smart vending device includes a liquid storage and retrieval device and a head. The liquid storage and retrieval device includes a body and a liquid dispensing mechanism. This application first performs dual verification of the container's identity, and opens the storage door after successful container identity verification. After the storage door closes, the identity of the open / closed lid on the container is verified, and the lid is opened after successful identity verification. After the lid is opened, the identity of each connector is verified. After successful identity verification of each connector, the liquid dispensing mechanism performs a docking operation. This enables the dispensing of liquid into the vending device without human contact and with multiple successful verifications, providing full traceability, dynamic monitoring, and protection against liquid contamination for the sold liquids.

[0007] The technical solution adopted in this application to solve the technical problem is as follows:

[0008] On the one hand, this application provides an IoT vending system capable of tracing the origin of liquid products, the specific technical solution of which is as follows:

[0009] An IoT vending system capable of tracing the origin of liquid products includes a smart vending device, a container, and a liquid storage device, wherein the smart vending device includes a liquid storage and retrieval device and a machine head;

[0010] The liquid storage and retrieval device includes a body and a liquid acquisition mechanism;

[0011] The container includes a body and a cover attached to the body; the body defines a holding cavity suitable for holding liquid, and a first identity tag containing first identity information is provided on the body;

[0012] The body is provided with a storage cavity suitable for storing containers. One side of the storage cavity is provided with a storage door that can be opened and closed. The storage door can be locked in the closed position by a controllable electronic lock. The electronic lock is provided with a container identification reading and writing device.

[0013] The cover has a receiving cavity, and a liquid outlet and a liquid outlet solenoid valve are provided in the receiving cavity. One end of the liquid outlet is connected to the receiving cavity, and the other end is connected to one end of the liquid outlet solenoid valve. The other end of the liquid outlet solenoid valve is provided with a liquid outlet extending outside the receiving cavity. The cover has an openable and closable cover. The openable and closable cover can be locked in the closed position by a controllable openable and closable cover electronic lock to block the liquid outlet extending outside the receiving cavity.

[0014] The machine head includes a cargo retrieval chamber and a liquid dispensing mechanism. One side of the cargo retrieval chamber is provided with an openable and closable machine head cabinet door. The machine head cabinet door can be locked in the closed position by a controllable machine head cabinet door electronic lock. The machine head cabinet door electronic lock is configured to be unlocked by the user via a human-machine interaction display screen. The human-machine interaction display screen is configured to allow the user to perform human-machine interaction.

[0015] The liquid storage device is installed in the licensor's warehouse and is used to supply liquids for sale to smart vending machines. The liquid storage device includes a shell, a storage tank, and a docking mechanism.

[0016] Furthermore, the liquid acquisition mechanism includes a movable plate, a suction component, and a liquid identification reading and writing device; the movable plate is arranged above the liquid outlet extending outside the receiving cavity and is configured to move linearly towards or away from the liquid outlet; the movable plate is provided with a liquid outlet interface, which is aligned with the liquid outlet, and the input end of the suction component is connected to the liquid outlet interface.

[0017] The cavity is also equipped with a liquid inlet and a liquid inlet solenoid valve. One end of the liquid inlet is connected to the container cavity, and the other end of the liquid inlet is connected to one end of the liquid inlet solenoid valve. The other end of the liquid inlet solenoid valve is provided with a liquid inlet port extending outside the cavity.

[0018] Furthermore, the cavity is also equipped with a ventilation port and a ventilation solenoid valve. One end of the ventilation port is connected to the container cavity, and the other end is connected to one end of the ventilation solenoid valve. The other end of the ventilation solenoid valve is provided with a ventilation port extending to the outside of the cavity. The cavity is also equipped with a solenoid valve power port extending to the outside of the cavity.

[0019] When the opening and closing cover is locked in the closed position by the opening and closing cover electronic lock, the opening and closing cover can also block the ventilation port, liquid inlet port and solenoid valve power port that extend outside the receiving cavity.

[0020] The liquid inlet, the air exchange port, and the solenoid valve power socket are all located below the movable plate. The movable plate can move linearly towards or away from the liquid inlet, the air exchange port, and the solenoid valve power socket. The movable plate is also provided with an air exchange interface and a power supply interface, which are aligned with the air exchange port and the solenoid valve power socket, respectively.

[0021] The aforementioned IoT vending system capable of tracing the origin of liquid products includes a second identity tag containing second identity information on the opening and closing lid. The container identity reading and writing device is configured to read the first identity information of the first identity tag and the second identity information of the second identity tag. Furthermore, the container identity reading and writing device can compare the read first identity information and second identity information with first preset identity information, which has been pre-written into the container identity reading and writing device.

[0022] Specifically, when the first identity information and the second identity information read by the container identity reading device both match the first preset identity information, the electronic lock on the storage door used to lock the storage door is unlocked.

[0023] Furthermore, the electronic lock for opening and closing the lid is equipped with a third identity tag containing third identity information; the liquid identity reading and writing device is configured to read the third identity information of the third identity tag when the container is located in the storage cavity and the storage door is closed, and the liquid identity reading and writing device can compare the read third identity information with second preset identity information; the second preset identity information has been written into the liquid identity reading and writing device in advance;

[0024] When the third identity information read by the liquid identity reading and writing device matches the second preset identity information, the electronic lock for locking the opening and closing cover is unlocked, and the opening and closing cover is opened to expose the ventilation port, liquid inlet port, liquid outlet port and solenoid valve power port.

[0025] Furthermore, the ventilation port, liquid outlet port, liquid inlet port, and solenoid valve power port extending outside the cavity are all sealed by a disposable sealing cap, which is equipped with a fourth identity label containing fourth identity information.

[0026] The liquid identity reading and writing device is also configured to read the fourth identity information of the fourth identity tag when the cover is in the open state, and the liquid identity reading and writing device can compare the read fourth identity information with the third preset identity information; the third preset identity information is written into the liquid identity reading and writing device in advance.

[0027] When the fourth identity information read by the liquid identity reading and writing device matches the third preset identity information, the moving plate makes a linear movement close to each port, so that the air exchange port, liquid outlet port and power supply port on the moving plate are connected and connected to the air exchange port, liquid outlet port and solenoid valve power supply port respectively.

[0028] Preferably, the liquid dispensing mechanism includes a protective chamber, a dispensing nozzle, a dispensing nozzle sealing device, and a three-way solenoid valve; the protective chamber is provided with a dispensing nozzle channel communicating with the picking chamber, the dispensing nozzle is located in the protective chamber, the dispensing nozzle is configured to enter or exit the picking chamber through the dispensing nozzle channel, and the dispensing nozzle sealing device is used to selectively open or close the dispensing nozzle channel.

[0029] The first end of the three-way solenoid valve is connected to the liquid outlet, the second end of the three-way solenoid valve is connected to the output end of the suction component, and the third end of the three-way solenoid valve is connected to an air conduit.

[0030] The machine head is also equipped with a security system, which includes cameras and fire-fighting facilities.

[0031] More preferably, the body further includes an installation cavity located above the storage cavity, the movable plate is disposed in the installation cavity, and a first inlet / outlet channel adapted to the movable plate is provided between the installation cavity and the storage cavity;

[0032] The top of the storage cavity is provided with a shielding plate for blocking the first entry and exit channel. The shielding plate is used to block the liquid identity reading and writing device from reading and writing third identity information and fourth identity information. The shielding plate is configured to be able to reciprocate horizontally at the top of the storage cavity to block or open the first entry and exit channel.

[0033] In the aforementioned IoT vending system capable of tracing the origin of liquid products, the storage door is hinged to the body; the shielding plate is slidably disposed on the top of the storage cavity, so that the shielding plate can slide horizontally toward or away from the storage door;

[0034] A connecting rod is provided between the shielding plate and the storage door. One end of the connecting rod is hinged to the storage door, and the other end of the connecting rod is hinged to the shielding plate.

[0035] Furthermore, the housing defines a storage cavity and a placement cavity located above the storage cavity. A cover is provided on the storage tank, and an opening and closing cover is connected to the cover. The housing is connected to the cover of the storage tank, such that the opening and closing cover of the storage tank's cover is located inside the storage cavity.

[0036] The docking mechanism is arranged inside the placement cavity, and a liquid extraction component is provided on the docking mechanism. The liquid extraction component is located outside the placement cavity, and the output end of the liquid extraction component is connected to the output end of the suction component of the liquid acquisition mechanism through a liquid replenishment pipeline.

[0037] Furthermore, the storage tank is also equipped with a liquid level sensor, a positioner, and a flow rate sensor; a shielding plate driving device is installed inside the shell; an identification tag marking its identity information is installed on the storage tank; a second access channel is provided between the storage cavity and the placement cavity; a second shielding plate is provided at the second access channel for opening or closing the second access channel; the second shielding plate is driven by the shielding plate driving device and can shield the identity information of the corresponding identification tag on the storage tank.

[0038] On the other hand, this application also provides an IoT-based sales method for liquid products that enables traceability, employing the aforementioned IoT sales system, specifically including the following steps:

[0039] Step S100: The container, which has been filled with liquid to be sold, has been assigned a first identity tag and / or a second identity tag, and has been sealed, is delivered to the smart vending device and brought close to the electronic lock of the storage door of the device. The container identity reading and writing device inside the electronic lock of the storage door reads the first identity tag and / or the second identity tag.

[0040] Step S200: When the first identity information in the first identity tag and / or the second identity information in the second identity tag read by the container identity reading device both match the first preset identity information, the electronic lock of the storage door used to lock the storage door is unlocked, the staff opens the storage door, places the container containing the liquid to be sold into the storage cavity and closes the storage door, and the electronic lock of the storage door locks the storage door.

[0041] Step S300: After the liquid storage device confirms that the storage door electronic lock has locked the storage door, the liquid identity reading and writing device reads the third identity information in the third identity tag in the opening and closing cover electronic lock, and compares the read third identity information with the second preset identity information. When the third identity information matches the second preset identity information, the opening and closing cover electronic lock used to lock the opening and closing cover is unlocked, and the opening and closing cover is opened.

[0042] Step S400: The moving plate of the liquid acquisition mechanism moves, so that the air exchange interface, liquid outlet interface and power supply interface on the moving plate are connected to the air exchange socket, liquid outlet socket and solenoid valve power supply socket respectively.

[0043] Furthermore, between step S300 and step S400, the following steps are also included:

[0044] Step S350: When the cover is in the open state, the liquid identification reader reads the fourth identification information in the fourth identification tag on the disposable packaging cover and compares the fourth identification information with the third preset identification information. When the fourth identification information matches the third preset identification information, step S400 is executed.

[0045] When a user purchases liquid through a smart vending machine, the following steps are performed:

[0046] Step S500: The user places an order using the human-computer interaction display screen. After the order is successfully placed and payment is made, the electronic lock of the cabinet door is unlocked, the cabinet door is opened, and the user puts the container into the retrieval chamber. The liquid dispensing nozzle drive device drives the liquid dispensing nozzle from the protective chamber through the liquid dispensing nozzle channel into the retrieval chamber. The suction component of the liquid acquisition mechanism is activated, the liquid dispensing solenoid valve is opened, and the liquid in the container is drawn out through the suction component and flows out through the liquid dispensing nozzle into the user's container.

[0047] Furthermore, when the container is initially empty or when the liquid in the container has been sold out and it is necessary to fill or replenish the container with liquid to be sold, the liquid storage and retrieval device is used to fill or replenish the container with liquid to be sold, including the following steps:

[0048] Step S600: When the container is brought close to the body of the liquid storage device and close to the electronic lock of the storage door, the container identification reading and writing device inside the electronic lock reads the first identification tag and / or the second identification tag on the container; when the first identification information in the first identification tag and / or the second identification information in the second identification tag both match the first preset identification information, the electronic lock of the storage door used to lock the storage door is unlocked, the staff opens the storage door, places the container of liquid to be replenished into the storage cavity and closes the storage door, and the electronic lock of the storage door locks the storage door.

[0049] If the container was originally inside the liquid storage device and had sold part or all of the liquid in the holding chamber, and it is necessary to replenish the liquid to be sold into the holding chamber of the container while it is still in place, then step S600 will not be executed.

[0050] Step S700: The movable plate on the liquid acquisition mechanism 30 moves, so that the liquid inlet, air exchange interface and power supply interface on the movable plate are connected to the liquid inlet, air exchange interface and solenoid valve power supply interface respectively.

[0051] Step S800: Fill or replenish the liquid to be sold into the container's holding chamber through the inlet via a pipe.

[0052] The aforementioned IoT-based sales method for tracing liquid products requires that, when filling or replenishing the container with the liquid to be sold from the liquid storage device, a liquid access device must be installed next to the liquid storage device before proceeding to step S600; and between steps S700 and S800, the following steps are also included:

[0053] Step S710: The shielding plate driving device drives the second shielding plate to move, opening the second inlet and outlet channel. The docking mechanism performs the operation of verifying the identity of the open and close cover on the storage tank cover. After the identity verification of the open and close cover is passed and the open and close cover is opened, the docking mechanism performs the operation of verifying the identity of each socket on the cover. After the identity verification of each socket on the cover is passed, the docking mechanism performs the docking and conduction operation, so that each socket on the storage tank is connected and conducted with each pair of interfaces of the docking mechanism.

[0054] Step S720: Activate the suction component of the liquid acquisition mechanism to draw the liquid in the storage tank into the container's holding chamber through the replenishment pipeline.

[0055] Furthermore, when replenishing liquid into the storage tank of the liquid storage device, two sets of liquid storage devices are used in conjunction to replenish the liquid into the storage tank, including the following steps:

[0056] Step S900: One set of liquid storage devices has a storage tank containing liquid, while the other set of liquid storage devices has no storage tank containing liquid. When replenishing liquid to the storage tank that does not contain liquid, the two sets of liquid storage devices are first connected to each other through their respective replenishment pipelines. After the two sets of liquid storage devices are connected to each other through their respective replenishment pipelines, the shielding plate driving device of each liquid storage device drives the second shielding plate to move, so as to open the second inlet and outlet channels of each liquid storage device.

[0057] Step S1000: The two liquid storage devices perform their respective authentication and docking operations. First, the docking mechanism verifies the identity of the open and closed caps on the storage tank. After the authentication of the open and closed caps is passed and the open and closed caps are opened, the docking mechanism verifies the identity of each port on the cap. After the authentication of each port on the cap is passed, the docking mechanism performs the docking operation to connect each port on the cap of the storage tank with each pair of interfaces on the docking mechanism.

[0058] Step S1100: Activate the suction component on one of the liquid storage devices to extract the liquid from the liquid-filled storage tank to the liquid-free storage tank.

[0059] The technical solutions of this application have at least the following advantages and beneficial effects:

[0060] 1. This application establishes a first identification tag and a second identification tag on the container body and the lid, respectively, to identify the container. This ensures that the storage door of the machine can only be opened when a correctly identified container arrives at the machine. This effectively prevents unauthorized containers from being placed in the storage chamber for the sale of unauthorized liquids, thus providing reliable protection for the sale of authorized liquids. Furthermore, by establishing the first and second identification tags on the body and lid respectively, the container's identity can be "double-verified." Compared to simply setting identification tags on the body or lid, this effectively prevents the body or lid from being swapped, further enhancing the security of container use. Simultaneously, since the container's identity is verified before each opening of the storage door, and the container identification reading device records the read identification information, traceability can be achieved by using the recorded identification information in the event of an unforeseen sales incident.

[0061] 2. This application further restricts the liquid identification device of the liquid dispensing mechanism to verify the identity of the open / closed lid only when the storage door is closed. Only after successful identification of the open / closed lid, allowing it to open, can the liquid identification device verify the identity of each port on the lid. Only after successful identification of each port can the moving plate of the liquid dispensing mechanism approach each port, enabling the interfaces on the moving plate to connect and conduct. This method allows for multiple verifications of the liquid's identity within the container, enabling the replenishment of liquid to the liquid-based IoT traceability smart vending device without human contact. It also further prevents the container from being temporarily switched while the liquid dispensing mechanism is performing the aforementioned operation of connecting the interfaces to the ports on the lid, thus providing reliable assurance for the sale of authorized liquids. Furthermore, this application allows the liquid to be obtained from the container without opening the lid, effectively preventing contamination and significantly improving food safety when selling liquids compared to opening the lid to add or retrieve liquid.

[0062] 3. By improving the structure of the dispensing head, this application can reliably protect the dispensing nozzle when not selling liquids, thereby reducing the risk of the dispensing nozzle being contaminated by long-term exposure to the external environment and reducing the risk of criminals releasing harmful substances through the dispensing nozzle. Attached Figure Description

[0063] Figure 1 A schematic diagram of the structure of a liquid-based IoT traceability smart vending device provided for an embodiment of this application;

[0064] Figure 2 for Figure 1A cross-sectional view of a liquid-based IoT traceability smart vending device is shown.

[0065] Figure 3 A schematic diagram of the structure of a container provided for an embodiment of this application;

[0066] Figure 4 for Figure 3 A cross-sectional view of the container shown;

[0067] Figure 5 for Figure 4 Enlarged view of the local structure at point A;

[0068] Figure 6 A schematic diagram of the structure of the liquid acquisition mechanism provided in the embodiments of this application;

[0069] Figure 7 for Figure 2 An enlarged view of a partial structure in the middle body shows the state when the pairs of interfaces on the liquid acquisition mechanism are not connected to the ports on the cover.

[0070] Figure 8 A schematic diagram showing the connection between each pair of interfaces on the liquid dispensing mechanism and each socket on the cover.

[0071] Figure 9 This is a partial structural diagram of the storage cavity of the machine body, showing the state when the shielding plate opens the first inlet / outlet channel;

[0072] Figure 10 for Figure 2 An enlarged view of a portion of the structure at the central nozzle shows the state when the liquid outlet is located inside the protective cavity;

[0073] Figure 11 This is a schematic diagram showing the liquid outlet extending into the cargo handling chamber.

[0074] Figure 12 This is a schematic diagram of Embodiment 2 of this application, which shows the use of a liquid-type IoT traceability smart storage and retrieval device as a liquid replenishment device and in conjunction with a liquid storage device to replenish liquid into a container.

[0075] Figure 13 for Figure 12 The diagram shows the structure of the storage tank.

[0076] Figure 14 This is a schematic diagram of the structure of the two sets of liquid storage devices 100 used in conjunction as proposed in Example 3.

[0077] Icons: 10-Container, 11-Body, 1101-Serving Chamber, 12-Lid, 1201-Receiving Chamber, 13-Ventilation Port, 14-Liquid Outlet Port, 15-Liquid Inlet Port, 16-Ventilation Solenoid Valve, 17-Liquid Outlet Solenoid Valve, 18-Liquid Inlet Solenoid Valve, 19-Ventilation Inlet, 110-Liquid Outlet Inlet, 111-Liquid Inlet Inlet, 112-Solenoid Valve Power Inlet, 113-Lid Opening / Closing, 114-Lid Opening / Closing Electronic Lock, 115-Disposable Sealing Lid, 20-Body, 21-Storage Chamber, 22-Storage Door, 23-Storage Door Electronic Lock, 24-Installation Chamber, 25-First In / Out Channel, 26 - Shielding plate, 27- Linkage rod, 30- Liquid acquisition mechanism, 31- Moving plate, 32- Suction component, 33- Liquid identification reader / writer, 34- Moving drive device, 35- Ventilation interface, 36- Liquid outlet interface, 37- Power supply interface, 38- Flow monitoring component, 40- Machine head, 41- Cargo chamber, 42- Machine head cabinet door, 43- Machine head cabinet door electronic lock, 44- Protective chamber, 45- Liquid outlet nozzle, 46- Three-way solenoid valve, 47- Liquid outlet nozzle channel, 48- Liquid outlet nozzle drive device, 49- Sealing plate, 410- Sealing plate drive device, 411- Air duct, 50- Human-machine interaction display screen;

[0078] 100-Liquid storage device, 101-Housing shell, 1011-Storage cavity, 1012-Placement cavity, 102-Storage tank, 103-Docking mechanism, 104-Liquid level sensor, 105-Positioner, 106-Water flow sensor, 107-Liquid replenishment pipeline, 108-Second inlet / outlet channel, 109-Second shielding plate, 1010-Shielding plate driving device;

[0079] The liquid storage device 100 includes a suction component 32', a cover 12', and an opening / closing cover 113'. Detailed Implementation

[0080] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0081] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this application may have fewer components, other components not shown in the drawings, different components, differently arranged components, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0082] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains. The terms “first,” “second,” and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a,” and similar terms, do not necessarily indicate a limitation of quantity.

[0083] The liquids mentioned in the embodiments of this application can be bulk liquids such as liquor, beer, wine, cooking oil, soy sauce, vinegar, and bulk beverages.

[0084] Please refer to Figures 1 to 14 On the one hand, embodiments of this application disclose an Internet of Things (IoT) vending system capable of tracing the origin of liquid products, including a smart vending device, a container 10, and a liquid storage device 100. The smart vending device further includes a liquid storage and retrieval device and a machine head 40. The liquid storage and retrieval device further includes a body 20 and a liquid acquisition mechanism 30, as detailed in the following embodiments.

[0085] Example 1

[0086] Please refer to Figures 1 to 11 The container 10 includes a body 11 and a cover 12 connected to the body 11. The body 11 defines a holding cavity 1101 suitable for holding liquids, wherein the liquid refers to liquids such as liquor, wine, soy sauce, vinegar, or bulk beverages. Furthermore, the body 11 is provided with a first identification tag (not shown in the figure) containing first identification information, preferably disposed on the outer periphery of the body 11. It should be noted that the identification tag described throughout this application can be an RFID electronic tag, a QR code tag, or a barcode tag. Correspondingly, for the identification reading and writing device described below, when the identification tag is an RFID electronic tag, a QR code tag, or a barcode tag, the identification reading and writing device corresponds to an RFID reader, a QR code tag reader, or a barcode tag reader.

[0087] The cover 12 has a receiving cavity 1201, and the receiving cavity 1201 is provided with a ventilation port 13, a liquid outlet port 14, a liquid inlet port 15, a ventilation solenoid valve 16, a liquid outlet solenoid valve 17, and a liquid inlet solenoid valve 18. Among them, one end of the ventilation port 13, the liquid outlet port 14, and the liquid inlet port 15 are connected to the holding cavity 1101, and the other end of the ventilation port 13, the liquid outlet port 14, and the liquid inlet port 15 are respectively connected to one end of the ventilation solenoid valve 16, the liquid outlet solenoid valve 17, and the liquid inlet solenoid valve 18. The other end of the ventilation solenoid valve 16, the liquid outlet solenoid valve 17, and the liquid inlet solenoid valve 18 is respectively provided with a ventilation port 19, a liquid outlet port 110, and a liquid inlet port 111 extending outside the receiving cavity 1201. The receiving cavity 1201 is also provided with a solenoid valve power port 112 extending outside the receiving cavity 1201.

[0088] In this application, the ventilation port 13, the ventilation solenoid valve 16, and the ventilation inlet 19 are used in conjunction to achieve air exchange between the container 1101 and the external environment by appropriately opening and closing the ventilation solenoid valve 16 when adding liquid to or extracting liquid from the container 1101, thereby maintaining the air pressure in the container 1101 within a reasonable range. The liquid outlet port 14, the liquid outlet solenoid valve 17, and the liquid outlet inlet 110 are used to allow liquid to flow out of the container 1101. The liquid inlet port 15, the liquid inlet solenoid valve 18, and the liquid inlet 111 are used to allow liquid to enter the container 1101. For example, the licensor (e.g., the manufacturer) can fill the container 1101 with liquid using the liquid inlet 111. The solenoid valve power socket 112 is used to cooperate with the power supply interface 37, which will be described below. When the power supply interface 37 is connected to the solenoid valve power socket 112, the power supply interface 37 can supply power to the electrical components such as the ventilation solenoid valve 16, the liquid discharge solenoid valve 17, and the liquid inlet solenoid valve 18 in the receiving cavity 1201 through the solenoid valve power socket 112. The power supply interface 37 is electrically connected to the power supply in the body 20.

[0089] Furthermore, the cover 12 is provided with an openable and closable cover 113, which may be a component hinged to the cover 12. The cover 113 can be locked in the closed position by a controllable electronic lock 114, thereby blocking the ventilation port 19, liquid outlet port 110, liquid inlet port 111, and solenoid valve power port 112 extending outside the receiving cavity 1201. That is, when the cover 113 is closed, the ventilation port 19, liquid outlet port 110, liquid inlet port 111, and solenoid valve power port 112 are all blocked and hidden. Simultaneously, the cover 113 is provided with a second identity tag containing second identity information (not shown in the figure), and the electronic lock 114 contains a third identity tag containing third identity information (not shown in the figure).

[0090] Furthermore, refer to Figure 3 As shown, the ventilation port 19, liquid outlet port 110, liquid inlet port 111, and solenoid valve power port 112 extending outside the accommodating cavity 1201 are all sealed by a disposable sealing cap 115, which is provided with a fourth identity label containing fourth identity information (not shown in the figure).

[0091] Combination Figure 2 As shown, the body 20 is provided with a storage cavity 21 suitable for storing the container 10. One side of the storage cavity 21 is provided with an openable and closable storage door 22, which may be a component hinged to the body 20. Furthermore, when the storage door 22 is locked in the closed position by a controllable storage door electronic lock 23, the storage door electronic lock 23 is provided with a container identification reading and writing device (not shown in the figure).

[0092] The container identity reading and writing device is configured to read or modify the first identity information of the first identity tag and the second identity information of the second identity tag, and the container identity reading and writing device can compare the read first identity information and second identity information with first preset identity information respectively; the first preset identity information is written into the container identity reading and writing device.

[0093] Specifically, when both the first and second identity information read by the container identity reader match the first preset identity information, the electronic lock 23 of the storage door 22, used to lock the storage door 22, is unlocked. In other words, during the actual use of this liquid-based IoT traceability smart vending device, when personnel bring container 10 to the device, they must first read the first and second identity information through the container identity reader, and then compare each of the first and second identity information with the first preset identity information. The first preset identity information may include information about the liquid manufacturer, etc.

[0094] Based on this, if both the first identity information and the second identity information match the first preset identity information, it indicates that the container 10 comes from the manufacturer. In this case, the electronic lock 23 of the storage door unlocks, allowing the storage door 22 to be opened and the container 10 placed into the storage cavity 21 of the body 20. Conversely, if one or both of the first identity information and the second identity information do not match the first preset identity information, it indicates that the container 10 does not come from the manufacturer. In this case, the electronic lock 23 of the storage door remains locked, and the storage door 22 cannot be opened.

[0095] Understandably, this method effectively prevents incorrectly identified containers 10 from being placed into the storage cavity 21 of the body 20. Furthermore, by setting a first identification tag and a second identification tag on the body 11 and the cover 12 respectively to identify the container 10, the identity of the container 10 can be "double-verified." Compared to setting identification tags only on the body 11 or the cover 12, the method adopted in this application effectively prevents the body 11 or the cover 12 from being swapped, further improving the security of the container 10 during use. Simultaneously, since the identity verification operation of the container 10 is included before each opening of the storage door 22, and the container identification reading device can record the read identification information, in the event of an unforeseen sales incident, the identification information recorded by the container identification reading device can be used for traceability, thereby achieving traceability.

[0096] In the embodiments of this application, the liquid acquisition mechanism 30 is used to acquire the liquid in the container 10 after the container 10 is placed into the storage cavity 21.

[0097] Combination Figures 6 to 8 As shown, the liquid acquisition mechanism 30 includes a movable plate 31, a suction component 32, and a liquid identification reader / writer 33. The movable plate 31 is arranged above each of the ports extending outside the receiving cavity 1201 and is configured to move linearly towards or away from each port. Each port refers to the aforementioned ventilation port 19, liquid outlet port 110, liquid inlet port 111, and solenoid valve power port 112 located on the cover 12. The movable plate 31 can move linearly towards or away from each port under the drive of a movable drive device 34, which can be a conventional linear actuator such as a cylinder or electric actuator.

[0098] Meanwhile, the movable plate 31 is equipped with a ventilation interface 35, a liquid outlet interface 36, and a power supply interface 37, which are respectively aligned with the ventilation port 19, the liquid outlet port 110, and the solenoid valve power supply port 112. Thus, during the liquid acquisition stage, the movable plate 31, driven by the movable drive device 34, approaches each port on the cover 12 until the ventilation interface 35 is connected to the ventilation port 19, the liquid outlet interface 36 to the liquid outlet port 110, and the power supply interface 37 to the solenoid valve power supply port 112. The ventilation interface 35 facilitates air exchange between the container cavity 1101 and the external environment; the liquid outlet interface 36 allows liquid to flow out of the container cavity 1101; and the power supply interface 37 supplies power to the electrical components such as the ventilation solenoid valve 16, the liquid outlet solenoid valve 17, and the liquid inlet solenoid valve 18 within the receiving cavity 1201 via the solenoid valve power supply port 112. At this time, the input end of the suction component 32 is connected to the liquid outlet interface 36 through a hose. The suction component 32 can be a pump. After the connection between each pair of interfaces and each port is completed, the liquid in the container 1101 can be extracted through the liquid outlet interface 36 using the suction component 32, so as to facilitate the sale of the liquid in conjunction with the machine head 40, which will be described below.

[0099] In embodiments of this application, the liquid identity reader / writer 33 is configured to read or modify the third identity information of the third identity tag when the container 10 is located inside the storage cavity 21 and the storage door 22 is closed. Furthermore, the liquid identity reader / writer 33 can compare the read third identity information with second preset identity information; the second preset identity information is written into the liquid identity reader / writer 33. The liquid identity reader / writer 33 may be mounted on the movable plate 31.

[0100] When the third identity information read by the liquid identity reader 33 matches the second preset identity information, the electronic lock 114 for locking the opening and closing cover 113 is unlocked, and the opening and closing cover 113 opens to expose the ventilation port 19, the liquid outlet port 110, the liquid inlet port 111, and the solenoid valve power socket 112. The opening and closing cover 113 and the cover body 12 can be hinged together by a hinge shaft, and an elastic element such as a torsion spring can be provided on the hinge shaft so that after the electronic lock 114 is unlocked, the opening and closing cover 113 can automatically open under the action of the torsion spring or other elastic element to expose the ventilation port 19, the liquid outlet port 110, the liquid inlet port 111, and the solenoid valve power socket 112.

[0101] In other words, when container 10 passes authentication and is placed into storage cavity 21, and storage door 22 is closed, the identity of the open / closed cover 113 on cover 12 needs to be verified first. This involves using liquid identity reading / writing device 33 to read the third identity information representing the identity of open / closed cover 113 and comparing the third identity information with second preset identity information. The second preset identity information can be liquid manufacturer information, liquid type information, etc.

[0102] Based on this, if the third identity information matches the second preset identity information, it further indicates that the liquid in container 10 comes from the manufacturer. In this case, the electronic lock 114 of the opening and closing cover is unlocked, so that the opening and closing cover 113 can be opened to expose the various ports on the cover 12 that were previously blocked by the opening and closing cover 113. Conversely, if the third identity information does not match the second preset identity information, it indicates that the liquid in container 10 may not come from the manufacturer. In this case, the electronic lock 114 of the opening and closing cover is not unlocked, and the opening and closing cover 113 is not opened, thus preventing the liquid acquisition mechanism 30 from acquiring the liquid in container 10.

[0103] Furthermore, the liquid identity reading and writing device 33 is also configured to read or modify the fourth identity information of the fourth identity tag when the cover 113 is in the open state, and the liquid identity reading and writing device 33 can compare the read fourth identity information with the third preset identity information, and write the third preset identity information into the liquid identity reading and writing device 33.

[0104] When the fourth identity information read by the liquid identity reader 33 matches the third preset identity information, the moving plate 31 moves linearly closer to each port, so that the ventilation port 35, liquid outlet port 36, and power supply port 37 on the moving plate 31 are connected to the ventilation port 19, liquid outlet port 110, and solenoid valve power supply port 112, respectively. In other words, after verifying the identity of the open / closed cap 113 and opening it, the identity of the disposable sealing cap 115 on each port needs to be verified first. That is, the fourth identity information representing the identity of the disposable sealing cap 115 is read again by the liquid identity reader 33, and compared with the third preset identity information. The third preset identity information can also be liquid manufacturer information, liquid type information, etc.

[0105] Based on this, if the fourth identity information matches the third preset identity information, it further indicates that the liquid in container 10 comes from the manufacturer. At this time, the moving plate 31, driven by the moving drive device 34, approaches the various insertion ports on the cover 12, so that the ventilation port 35, liquid outlet port 36, and power supply port 37 on the moving plate 31 pierce the disposable sealing caps 115 on the ventilation port 19, liquid outlet port 110, and solenoid valve power supply port 112, respectively. This allows the ventilation port 35, liquid outlet port 36, and power supply port 37 on the moving plate 31 to connect and conduct with the ventilation port 19, liquid outlet port 110, and solenoid valve power supply port 112 on the cover 12, respectively. This completes the operation of placing container 10 into storage cavity 21 and enabling liquid acquisition mechanism 30 to acquire liquid.

[0106] It is worth noting that, through the above-mentioned setup, after container 10 is placed into storage chamber 21, storage door 22 must be closed first before liquid identification device 33 can verify the identity of open / closed cover 113. After successful identity verification of open / closed cover 113 and opening of cover 113, liquid identification device 33 will re-verify the identity of each insertion port. It is understandable that by adopting the above-mentioned multi-verification method, liquid can be replenished to the liquid-based IoT traceability smart vending device without human contact, and further prevents container 10 from being temporarily switched when liquid dispensing mechanism 30 performs the aforementioned operation of connecting each pair of interfaces to the insertion ports on cover 12, thus providing reliable assurance for the sale of authorized liquids.

[0107] In the embodiments of this application, it can be achieved as follows: when the container 10 is located in the storage cavity 21 and the storage door 22 is closed, the liquid identity reading and writing device 33 first verifies the third identity information to unlock the opening and closing cover electronic lock 114, thereby opening the opening and closing cover 113 to expose each socket, and then the liquid identity reading and writing device 33 can further verify the fourth identity information.

[0108] Specifically, in combination Figure 7 or Figure 8 As shown, the body 20 also has a mounting cavity 24 located above the storage cavity 21. The movable plate 31 is disposed in the mounting cavity 24, and a first entry / exit channel 25 adapted to the movable plate 31 is provided between the mounting cavity 24 and the storage cavity 21. That is to say, the movable plate 31 can enter the storage cavity 21 through the first entry / exit channel 25 or retract from the storage cavity 21 to the mounting cavity 24 under the drive of the moving drive device 34.

[0109] At this time, a shielding plate 26 for blocking the first access channel 25 is provided on the top of the storage cavity 21. The shielding plate 26 is used to block the liquid identity reading and writing device 33 from reading and writing the third identity information and the fourth identity information. The shielding plate 26 is configured to be able to move back and forth in the horizontal direction on the top of the storage cavity 21 so that the shielding plate 26 can block or open the first access channel 25.

[0110] Thus, when the storage door 22 is open, the shielding plate 26 blocks the first access channel 25. At this time, since the shielding plate 26 can shield the third identity information of the third identity tag, even if the container 10 is placed in the target position in the storage cavity 21, the liquid identity reading and writing device 33 on the moving plate 31 in the installation cavity 24 cannot obtain the third identity information of the third identity tag. At this time, the opening and closing cover 113 cannot be opened, and thus the aforementioned docking and connection operation cannot be achieved. Correspondingly, when the storage door 22 is closed, the shielding plate 26 can move from the closed position blocking the first access channel 25 to the open position opening the first access channel 25. At this time, since the first access channel 25 is opened, the liquid identity reading and writing device 33 can read the third identity information of the third identity tag to verify the identity of the opening and closing cover 113. In conjunction with the above, after the identity verification of the opening and closing cover 113 is passed, the opening and closing cover electronic lock 114 is unlocked, and the opening and closing cover 113 is opened to expose the various slots on the cover body 12. At this time, the liquid identity reading and writing device 33 can further verify the fourth identity information of the fourth identity tag on the disposable sealing cover 115 of each slot.

[0111] In order to optimize the structural design within the storage cavity 21 and reduce the cost of moving the shielding plate 26 between the closed position of blocking the first access channel 25 and the open position of opening the first access channel 25, the movement of the shielding plate 26 can be achieved by linking the storage door 22 with the shielding plate 26.

[0112] Specifically, refer to Figure 9 As shown, the shielding plate 26 can be slidably mounted on the top of the storage cavity 21 by means of a slide rail, so that the shielding plate 26 can slide horizontally closer to or further away from the storage door 22. At the same time, a connecting rod 27 is provided between the shielding plate 26 and the storage door 22. One end of the connecting rod 27 is hinged to the storage door 22, and the other end of the connecting rod 27 is hinged to the shielding plate 26.

[0113] Thus, when storage door 22 is in such a position Figure 7 or Figure 8In the closed state, the shielding plate 26 is located away from the storage door 22 and does not block the first access channel 25, which is in the open state. Correspondingly, as the storage door 22 pivots outward to gradually open, the pivoting motion of the storage door 22 is converted into a horizontal linear motion of the shielding plate 26 under the transmission action of the connecting rod 27. This causes the shielding plate 26 to gradually approach the first access channel 25. When the storage door 22 is at its maximum opening, the shielding plate 26 moves to completely block the first access channel 25. At this point, even if the container 10 is placed in the target position within the storage cavity 21, the liquid identification reader 33 cannot read the third identification information of the third identification tag. Correspondingly, when the storage door 22 closes again, the shielding plate 26 can move in the opposite direction under the action of the connecting rod 27, thereby opening the first access channel 25.

[0114] In embodiments of this application, in order to sell liquids, the liquid IoT traceability smart vending device may also include a head 40 disposed above the body 20.

[0115] Combination Figure 1 , Figure 2 , Figure 10 and Figure 11 The dispenser 40, as shown, includes a dispensing chamber 41 and a liquid dispensing mechanism. One side of the dispensing chamber 41 has an openable and closable dispenser cabinet door 42, which is locked in the closed position by a controllable electronic lock 43. The electronic lock 43 is configured to unlock after a user places an order and makes payment via a human-machine interface display screen 50. The human-machine interface display screen 50 is configured for user interaction. For example, the human-machine interface display screen 50 can be installed at an appropriate location on the outer wall of the dispenser 40. When a user needs to purchase liquid, they can directly place an order through the human-machine interface display screen 50, and after the user places an order and makes payment, the electronic lock 43 automatically unlocks, allowing the dispenser cabinet door 42 to open.

[0116] Based on this, considering that the liquid outlet of a common liquid vending machine is always exposed to the external environment under normal circumstances, this method is disadvantageous for selling liquids such as liquor. The reason is that the liquid outlet is easily contaminated by being exposed to the external environment for a long time, which will contaminate the liquid dispensed from the outlet. At the same time, if the liquid outlet is exposed to the external environment for a long time, it will increase the risk that criminals will put harmful substances into the liquid outlet.

[0117] Therefore, the embodiments of this application further improve the structure of the head 40. Specifically, continue to refer to... Figure 10 and Figure 11The liquid dispensing mechanism includes a protective chamber 44, a dispensing nozzle 45, a dispensing nozzle sealing device, and a three-way solenoid valve 46. The protective chamber 44 can be positioned above the receiving chamber 41, and it has a dispensing nozzle channel 47 communicating with the receiving chamber 41. The dispensing nozzle 45 is located within the protective chamber 44 and is configured to enter or exit the receiving chamber 41 via the dispensing nozzle channel 47. The dispensing nozzle 45 can enter and exit the receiving chamber 41 under the drive of a dispensing nozzle driving device 48, which can be a conventional linear actuator such as a cylinder or electric actuator arranged within the protective chamber 44.

[0118] The nozzle sealing device is used to selectively open or close the nozzle channel 47. Further, the nozzle sealing device may include a sealing plate 49 and a sealing plate driving device 410, wherein the sealing plate 49 is capable of reciprocating in the horizontal direction towards or away from the nozzle channel 47 under the drive of the sealing plate driving device 410, and the sealing plate driving device 410 may be a conventional linear actuator such as a cylinder or electric actuator.

[0119] The three-way solenoid valve 46 is used to control the opening and closing of the dispensing nozzle 45. Specifically, the first end of the three-way solenoid valve 46 is connected to the dispensing nozzle 45, the second end of the three-way solenoid valve 46 is connected to the output end of the aforementioned suction component 32 via a hose, and the third end of the three-way solenoid valve 46 is connected to an air conduit 411 to maintain the air pressure inside the three-way solenoid valve 46 within a reasonable range.

[0120] Based on the above settings, when a user needs to purchase liquid, the user can first place an order using the human-computer interaction display screen 50. After the user successfully places an order and makes payment, the electronic lock 43 of the cabinet door is unlocked to open the cabinet door 42. Subsequently, the sealing plate drive device 410 of the liquid outlet sealing device drives the sealing plate 49 away from the liquid outlet channel 47, the liquid outlet channel 47 is opened, and the liquid outlet drive device 48 drives the liquid outlet 45 from the protective cavity 44 through the liquid outlet channel 47 into the picking cavity 41. After the liquid outlet 45 enters the receiving chamber 41, the suction component 32 of the liquid acquisition mechanism 30 is activated, and the liquid outlet solenoid valve 17 is opened to extract the liquid from the holding chamber 1101 through the suction component 32. The liquid flows sequentially through the liquid outlet 14, the liquid outlet solenoid valve 17, the liquid outlet port 110, the liquid outlet port 36, the suction component 32, and the three-way solenoid valve 46 before flowing out through the liquid outlet 45. At this time, the user can obtain the liquid flowing out from the liquid outlet 45.

[0121] After a single sale is completed, the suction component 32 stops, the liquid outlet solenoid valve 17 and the three-way solenoid valve 46 close, the liquid outlet 45 retracts to the protective chamber 44 under the drive of the liquid outlet drive device 48, and the sealing plate drive device 410 drives the sealing plate 49 to close the liquid outlet channel 47, and the machine head cabinet door 42 is closed by the user.

[0122] Understandably, the above-mentioned setup can reliably protect the dispensing nozzle 45 when liquids are not being sold, thereby reducing the risk of the dispensing nozzle 45 being contaminated by long-term exposure to the external environment and reducing the risk of criminals releasing harmful substances through the dispensing nozzle 45.

[0123] Furthermore, in combination Figure 6 As shown, a flow monitoring component 38, such as a flow meter, can also be installed on the pipeline between the suction component 32 and the three-way solenoid valve 46 to facilitate real-time detection of the amount of liquid extracted by the suction component 32.

[0124] Furthermore, a security system can be installed on the head unit 40. This security system may include a camera (not shown in the figure) installed on the head unit 40, as well as fire-fighting equipment (such as fire extinguishers, not shown in the figure) stored inside the head unit 40. The camera is used to monitor the usage of the liquid IoT traceability smart vending device in real time, while the fire-fighting equipment is used in case of emergencies (such as fire).

[0125] It should be noted that although the above embodiments of this application only describe the use of a single container 10 in conjunction with a single vending machine 40 to sell a single type of liquid, the liquid IoT traceability smart vending device disclosed in the embodiments of this application is not limited to this. For example, in actual implementation, a single liquid IoT traceability smart vending device can be equipped with multiple containers 10 to hold liquids of different types, tastes, or qualities, and multiple containers 10 can be used in conjunction with a single vending machine 40 to sell multiple liquids of different types, tastes, or qualities contained in multiple containers 10 using a single vending machine 40. Of course, when there are multiple containers 10, a one-to-one correspondence between the vending machine 40 and the containers 10 can be adopted to realize the sale of liquid in a single container 10 using a single vending machine 40. In this case, a single liquid IoT traceability smart vending device can also sell multiple liquids of different types, tastes, or qualities.

[0126] Example 2

[0127] like Figure 12 and Figure 13 As shown, it should be further explained that in practical applications, the liquid storage device 100 in the IoT vending system for tracing liquid products disclosed in Embodiment 1 of this application can be used not only in conjunction with the vending machine head 40 as a liquid vending machine, but also independently as a liquid replenishment device to replenish liquid into the empty container 10. In this case, the suction component 32 of the liquid acquisition mechanism 30 can be a bidirectional pump with bidirectional liquid extraction capability, such as a peristaltic pump.

[0128] When the liquid-based IoT traceability smart storage and retrieval device is used alone as a liquid replenishment device, the container 10 from the liquid vending machine can be placed into the storage cavity 21 of the machine body 20 in the manner described in Embodiment 1. After completing the docking and connection operation, the output end of the suction component 32 can be connected to an external liquid source through a pipeline, thereby drawing liquid from the liquid source into the holding cavity 1101 of the container 10 through the suction component 32. Replenishing liquid to the container 10 in this way helps to improve the safety of liquid replenishment.

[0129] Furthermore, considering the possibility that the liquid being replenished to container 10 might be from an unauthorized source, it is advisable to equip the authorized party's warehouse with a liquid storage device 100 as a liquid source, thereby further enhancing the safety of liquid replenishment.

[0130] Specifically, combined Figure 12 and Figure 13 As shown, the liquid storage device 100 may include a housing 101, a storage tank 102, and a docking mechanism 103.

[0131] The housing 101 defines a storage cavity 1011 and a placement cavity 1012 located above the storage cavity 1011. Further, the housing 101 can be connected to the lid 12' of the storage tank 102, such that the opening and closing cover 113' of the lid 12' of the storage tank 102 is located within the storage cavity 1011, thereby protecting the opening and closing cover 113' of the lid 12' of the storage tank 102. In this embodiment, the storage tank 102 has a structure substantially the same as that of the container 10 described in Embodiment 1, and this storage tank 102 is suitable for the licensor to store large quantities of liquid in warehouses and other locations. The difference between the storage tank 102 and the container 10 is that, as... Figure 11 As shown, the storage tank 102 is also equipped with a liquid level sensor 104, a positioner 105, and a water flow sensor 106. The liquid level sensor 104 is used to detect the liquid level stored in the storage tank 102, the positioner 105 is used to detect the storage position in the storage tank 102, and the water flow sensor 106 is used to monitor the flow of the liquid stored in the storage tank 102. The liquid level sensor 104, positioner 105, and water flow sensor 106 enable the licensor to more effectively manage the liquid within the storage tank 102.

[0132] The docking mechanism 103 can be arranged inside the placement cavity 1012. This docking mechanism 103 has a basically the same structure as the liquid acquisition mechanism 30 described in Embodiment 1. The difference is that the suction component 32' of the docking mechanism 103 can be located outside the placement cavity 1012, and the output end of the suction component 32' is connected to the output end of the suction component 32 of the liquid acquisition mechanism 30 via a replenishment pipeline 107. The suction component 32' of the docking mechanism 103 is generally not used under normal conditions; therefore, the suction component 32' of the docking mechanism 103 can be a circulating pump that can still supply fluid flow even when no power is applied.

[0133] At this time, a second access channel 108 is provided between the storage cavity 1011 and the placement cavity 1012. A second shielding plate 109 is also provided at the second access channel 108 for opening or closing the channel, and the second shielding plate 109 is suitable for shielding the identity information of the corresponding identification tag on the storage tank 102. Unlike the liquid-based IoT traceability intelligent storage and retrieval device in Embodiment 1, the second shielding plate 109 in the liquid storage device 100 can be operated by a shielding plate driving device 1010 to open or close the second access channel 108. The shielding plate driving device 1010 can be a linear actuator such as a cylinder.

[0134] With the above settings, when the liquid-based IoT traceability intelligent storage and retrieval device disclosed in this application embodiment is used as a liquid replenishment device and needs to replenish liquid into the empty container 10, in conjunction with the content described in the aforementioned embodiment 1, after the container 10 is authenticated and placed into the storage cavity 21, each pair of interfaces on the liquid acquisition mechanism 30 and each port on the container 10 are connected and connected.

[0135] For the liquid storage device 100, the shielding plate drive device 1010 can only be powered on and drive the second shielding plate 109 to move after the container 10 has been authenticated and placed into the storage cavity 21, and after the interfaces on the liquid acquisition mechanism 30 have been connected to the ports on the container 10. Figure 10The position shown is used to open the second access channel 108, thereby facilitating the docking mechanism 103 to perform the operation of verifying the identity of the opening and closing cover 113' on the cover 12' of the storage tank 102. After the identity verification of the opening and closing cover 113' is passed and the opening and closing cover 113' is opened, the docking mechanism 103 performs the operation of verifying the identity of each socket on the cover 12'. After the identity verification of each socket on the cover 12' is passed, the docking mechanism 103 performs the docking connection operation so that each socket on the storage tank 102 is connected and connected to each pair of interfaces of the docking mechanism 103. The operation performed by the docking mechanism 103 to verify the identity of the open / closed cap 113' and the identity of each port on the cap 12' is the same as the operation performed by the liquid acquisition mechanism 30 in the aforementioned embodiment 1 to verify the identity of the open / closed cap 113 of the container 10 and the identity of each port on the cap 12. Furthermore, the docking and connection operation performed by the docking mechanism 103 is the same as the docking and connection process between the liquid acquisition mechanism 30 and the container 10 in the aforementioned embodiment 1, and will not be elaborated further here.

[0136] Then the suction component 32 of the liquid acquisition mechanism 30 can be activated to draw the liquid in the storage tank 102 into the container cavity 1101 of the container 10 via the replenishment pipeline 107.

[0137] Understandably, by adopting the above-mentioned method of replenishing liquid, it can be further ensured that only liquids authorized by the licensor can be replenished into container 10, thereby providing a reliable guarantee for the sale of authorized liquids.

[0138] Example 3

[0139] Based on Example 2, considering the safety of replenishing liquid into the storage tank 102 of the liquid storage device 100, two sets of liquid storage devices 100 can be used in combination to improve the safety of replenishing liquid into the storage tank 102.

[0140] Specifically, combined Figure 14 As shown, when the two liquid storage devices 100 are used together, it is assumed that the storage tank 102 of one liquid storage device 100 contains liquid, while the storage tank 102 of the other liquid storage device 100 does not contain liquid.

[0141] Based on this, when it is necessary to replenish liquid to the storage tank 102 that is not filled with liquid, the two sets of liquid storage devices 100 are first connected to each other through their respective replenishment pipelines 107. After the two sets of liquid storage devices 100 are connected to each other through their respective replenishment pipelines 107, the shielding plate drive device 1010 of each liquid storage device 100 can be energized and drive the second shielding plate 109 of each device to move, so as to open the second inlet and outlet channels 108 of each liquid storage device 100.

[0142] Subsequently, each liquid storage device 100 performed authentication and connection operations. Specifically, for a single liquid storage device 100, the docking mechanism 103 first verifies the identity of the open / closed cap 113' on the storage tank 102. After the identity verification of the open / closed cap 113' is passed and the open / closed cap 113' is opened, the docking mechanism 103 verifies the identity of each socket on the cover 12'. After the identity verification of each socket on the cover 12' is passed, the docking mechanism 103 performs a docking connection operation to connect each socket on the cover 12' of the storage tank 102 with each interface on the docking mechanism 103. The operations performed by the docking mechanism 103 to verify the identity of the open / closed cap 113' and the identity of each socket on the cover 12' are the same as the operations performed by the liquid acquisition mechanism 30 in Embodiment 1 to verify the identity of the open / closed cap 113' and the identity of each socket on the cover 12' of the container 10. Furthermore, the docking connection operation performed by the docking mechanism 103 is the same as the docking connection process between the liquid acquisition mechanism 30 and the container 10 in Embodiment 1, and will not be elaborated further here.

[0143] Subsequently, the suction component 32' on one of the liquid storage devices 100 is activated to draw liquid from the liquid-filled storage tank 102 to the empty storage tank 102. In conjunction with the above embodiment 2, the suction component 32' on each liquid storage device 100 can be a circulating pump that can still supply fluid flow even without power, so that liquid extraction can be achieved by activating only one suction component 32'.

[0144] On the other hand, embodiments of this application also disclose an IoT-based sales method capable of tracing the origin of liquid products, employing the IoT sales system described in embodiments 1 to 3 above, specifically including the following steps:

[0145] Step S100: The container 10, which has been filled with liquid for sale, assigned a first identity tag and / or a second identity tag, and is sealed, is delivered to the smart vending device and brought close to the storage door electronic lock 23 of the machine body 20. The container identity reading and writing device inside the storage door electronic lock 23 reads the first identity tag and / or the second identity tag.

[0146] Step S200: When the first identity information in the first identity tag and / or the second identity information in the second identity tag read by the container identity reading device both match the first preset identity information, the electronic lock 23 of the storage door used to lock the storage door 22 is unlocked, the staff opens the storage door 22, places the container 10 containing the liquid to be sold into the storage cavity 21 and closes the storage door 22, and the electronic lock 23 of the storage door locks the storage door 22.

[0147] Step S300: After the liquid storage device confirms that the storage door electronic lock 23 has locked the storage door 22, the liquid identity reading and writing device 33 reads the third identity information in the third identity tag in the opening and closing cover electronic lock 114, and compares the read third identity information with the second preset identity information. When the third identity information matches the second preset identity information, the opening and closing cover electronic lock 114 used to lock the opening and closing cover 113 is unlocked, and the opening and closing cover 113 is opened.

[0148] Step S400: The movable plate 31 of the liquid acquisition mechanism 30 moves, so that the air exchange port 35, liquid outlet port 36 and power supply port 37 on the movable plate 31 are connected to the air exchange port 19, the liquid outlet port 110 and the solenoid valve power supply port 111 respectively.

[0149] Furthermore, between step S300 and step S400, the following steps are also included:

[0150] Step S350: When the opening and closing cover 113 is in the open state, the liquid identity reading and writing device 33 reads the fourth identity information in the fourth identity tag on the disposable sealing cover 115 and compares the fourth identity information with the third preset identity information. When the fourth identity information matches the third preset identity information, step S400 is executed.

[0151] When a user purchases liquid through a smart vending machine, the following steps are performed:

[0152] Step S500: The user places an order using the human-computer interaction display screen 50. After the order is successfully placed and payment is made, the electronic lock 43 of the cabinet door is unlocked, the cabinet door 42 is opened, and the user puts the container into the retrieval chamber 41. The dispensing nozzle drive device 48 drives the dispensing nozzle 45 from the protective chamber 44 through the dispensing nozzle channel 47 into the retrieval chamber 41. The suction component 32 of the liquid acquisition mechanism 30 is activated, the dispensing solenoid valve 17 is opened, and the liquid in the container chamber 1101 is extracted through the suction component 32 and flows out through the dispensing nozzle 45 into the user's container.

[0153] Preferably, when container 10 is initially empty or when the liquid in container 10 has been sold out and it is necessary to fill or replenish the container 10 with liquid to be sold, the liquid storage and retrieval device is used to fill or replenish the container 10 with liquid to be sold, including the following steps:

[0154] Step S600: When the container 10 is brought close to the body 20 of the liquid storage and retrieval device and close to the electronic lock 23 of the storage door of the body 20, the container identity reading and writing device inside the electronic lock 23 reads the first identity tag and / or the second identity tag on the container 10; when the first identity information in the first identity tag and / or the second identity information in the second identity tag both match the first preset identity information, the electronic lock 23 used to lock the storage door 22 is unlocked, the staff opens the storage door 22, places the container 10 that needs to be replenished with liquid into the storage cavity 21 and closes the storage door 22, and the electronic lock 23 locks the storage door 22.

[0155] If container 10 was originally inside the body 20 of the liquid storage device and has sold part or all of the liquid in the holding cavity, and it is necessary to replenish the liquid to be sold into the holding cavity of container 10 while it is still in place, then container 10 is already located in the storage cavity 21 of the body 20, and step S600 is not executed.

[0156] Step S700: The movable plate 31 on the liquid acquisition mechanism 30 moves, so that the liquid inlet 15, the air exchange port 35 and the power supply port 37 on the movable plate 31 are connected to the liquid inlet 111, the air exchange port 19 and the solenoid valve power supply port 111 respectively.

[0157] Step S800: The liquid to be replenished is filled or added into the holding chamber of container 10 through the inlet port 111 via a pipe.

[0158] Furthermore, when filling or replenishing the container 10 with liquid for sale from the liquid storage device 100, the liquid storage and retrieval device must be installed beside the liquid storage device 100 before proceeding to step S600; and between steps S700 and S800, the following steps are also included:

[0159] Step S710: The shielding plate driving device 1010 drives the second shielding plate 109 to move, opening the second inlet / outlet channel 108. The docking mechanism 103 performs the operation of verifying the identity of the opening and closing cover 113' on the cover 12' of the storage tank 102. After the identity verification of the opening and closing cover 113' is passed and the opening and closing cover 113' is opened, the docking mechanism 103 performs the operation of verifying the identity of each socket on the cover 12'. After the identity verification of each socket on the cover 12' is passed, the docking mechanism 103 performs the docking and conduction operation, so that each socket on the storage tank 102 is connected and conducted with each interface of the docking mechanism 103.

[0160] Step S720: Activate the suction component 32 of the liquid acquisition mechanism 30 to draw the liquid in the storage tank 102 into the holding chamber 1101 of the container 10 through the replenishment pipeline 107.

[0161] Preferably, when replenishing liquid into the storage tank 102 of the liquid storage device 100, two sets of liquid storage devices 100 are used in combination to replenish the liquid into the storage tank 102, including the following steps:

[0162] Step S900: One set of liquid storage devices 100 has a storage tank 102 containing liquid, while the other set of liquid storage devices 100 has a storage tank 102 without liquid. When replenishing liquid to the storage tank 102 without liquid, the two sets of liquid storage devices 100 are first connected to each other through their respective replenishment pipes 107. After the two sets of liquid storage devices 100 are connected to each other through their respective replenishment pipes 107, the shielding plate driving device 1010 of each liquid storage device 100 drives its respective second shielding plate 109 to move, so as to open the second inlet and outlet channel 108 of each liquid storage device 100.

[0163] Step S1000: The two liquid storage devices 100 respectively perform their own authentication and docking operations. First, the docking mechanism 103 verifies the identity of the open / closed cover 113' on the storage tank 102. After the authentication of the open / closed cover 113' is passed and the open / closed cover 113' is opened, the docking mechanism 103 verifies the identity of each socket on the cover 12'. After the authentication of each socket on the cover 12' is passed, the docking mechanism 103 performs the docking operation to connect and connect each socket on the cover 12' of the storage tank 102 with each pair of interfaces on the docking mechanism 103.

[0164] Step S1100: Activate the suction component 32' on one of the liquid storage devices 100 to extract the liquid from the liquid-containing storage tank 102 to the liquid-free storage tank 102.

[0165] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An Internet of Things (IoT) vending system for tracing liquid products, comprising a smart vending device, a container (10), and a liquid storage device (100), characterized in that: The intelligent vending device includes a liquid storage and dispensing device and a machine head (40). The liquid storage and retrieval device includes a body (20) and a liquid acquisition mechanism (30); The container (10) includes a body (11) and a cover (12) connected to the body (11); the body (11) defines a holding cavity (1101) suitable for holding liquid, and a first identity tag containing first identity information is provided on the body (11); The body (20) is provided with a storage cavity (21) suitable for storing a container (10). A storage door (22) that can be opened and closed is provided on one side of the storage cavity (21). The storage door (22) can be locked in the closed position by a controllable storage door electronic lock (23). The storage door electronic lock (23) is provided with a container identity reading and writing device. The cover (12) is provided with a receiving cavity (1201), and a liquid outlet (14) and a liquid outlet solenoid valve (17) are provided in the receiving cavity (1201). One end of the liquid outlet (14) is connected to the holding cavity, and the other end is connected to one end of the liquid outlet solenoid valve (17). The other end of the liquid outlet solenoid valve (17) is provided with a liquid outlet (110) extending to the outside of the receiving cavity (1201). The cover (12) is provided with an openable and closable cover (113). The openable and closable cover (113) can be locked in the closed position by a controllable openable and closable cover electronic lock (114) to block the liquid outlet (110) extending to the outside of the receiving cavity (1201). The machine head (40) includes a loading chamber (41) and a liquid dispensing mechanism. The liquid dispensing mechanism includes a dispensing nozzle (45). A machine head cabinet door (42) that can be opened and closed is provided on one side of the loading chamber (41). The machine head cabinet door (42) can be locked in the closed position by a controllable machine head cabinet door electronic lock (43). The machine head cabinet door electronic lock (43) is configured to be unlocked by the user via a human-computer interaction display screen (50). The human-computer interaction display screen (50) is configured to allow the user to perform human-computer interaction. The liquid storage device (100) is installed in the warehouse of the licensor and is used to supply liquid for sale to smart vending devices. The liquid storage device (100) includes a shell (101), a storage tank (102) and a docking mechanism (103). The opening and closing cover (113) is provided with a second identity tag containing second identity information. The container identity reading and writing device is configured to read the first identity information of the first identity tag and the second identity information of the second identity tag. Furthermore, the container identity reading and writing device can compare the read first identity information and second identity information with first preset identity information respectively. The first preset identity information has been written into the container identity reading and writing device in advance. When the first identity information and the second identity information read by the container identity reading device both match the first preset identity information, the electronic lock (23) of the storage door used to lock the storage door (22) is unlocked; The liquid acquisition mechanism (30) includes a movable plate (31), a suction component (32), and a liquid identity reading and writing device (33); the electronic lock (114) for opening and closing the lid is provided with a third identity tag containing third identity information; the liquid identity reading and writing device (33) is configured to read the third identity information of the third identity tag when the container (10) is located in the storage cavity (21) and the storage door (22) is closed, and the liquid identity reading and writing device (33) can compare the read third identity information with second preset identity information; the second preset identity information has been written into the liquid identity reading and writing device (33) in advance. When the third identity information read by the liquid identity reading and writing device (33) matches the second preset identity information, the electronic lock (114) for locking the opening and closing cover (113) is unlocked, and the opening and closing cover (113) is opened. The movable plate (31) is provided with a liquid outlet interface (36), a ventilation interface (35) and a power supply interface (37), with the liquid outlet interface (36) aligned with the liquid outlet socket (110); the receiving cavity (1201) is also provided with a liquid inlet interface (15), a liquid inlet solenoid valve (18), a liquid level sensor (104), a positioner (105), a flow rate sensor (106), a ventilation interface (13) and a ventilation solenoid valve (16), with a liquid inlet socket (111) extending to the outside of the receiving cavity (1201) at the other end of the liquid inlet solenoid valve (18), and a ventilation socket (19) extending to the outside of the receiving cavity (1201) at the other end of the ventilation solenoid valve (16). The receiving cavity (1201) is also provided with a solenoid valve power socket (112) extending to the outside of the receiving cavity (1201). The ventilation port (19), liquid outlet port (110), liquid inlet port (111), and solenoid valve power port (112) extending outside the accommodating cavity (1201) are all sealed by a disposable sealing cap (115), which is provided with a fourth identity label containing fourth identity information. The liquid identity reading and writing device (33) is also configured to read the fourth identity information of the fourth identity tag when the open / closed cover (113) is in the open state, and the liquid identity reading and writing device (113) can compare the read fourth identity information with the third preset identity information; the third preset identity information is written into the liquid identity reading and writing device (33) in advance. When the fourth identity information read by the liquid identity reading and writing device (33) matches the third preset identity information, the moving plate (31) moves and the air exchange interface (35), liquid outlet interface (36) and power supply interface (37) on the moving plate (31) are connected to the air exchange port (19), liquid outlet port (110) and solenoid valve power supply port (112) respectively.

2. The IoT vending system for tracing liquid products according to claim 1, characterized in that: The housing (101) defines a storage cavity (1011) and a placement cavity (1012) located above the storage cavity (1011). A cover (12') is provided on the storage tank (102), and an opening and closing cover (113') is connected to the cover (12'). The housing (101) is connected to the cover (12') of the storage tank (102) such that the opening and closing cover (113') of the cover (12') of the storage tank (102) is located inside the storage cavity (1011). The docking mechanism (103) is arranged inside the placement cavity (1012). A liquid extraction component (32') is provided on the docking mechanism (103). The liquid extraction component (32') is located outside the placement cavity (1012), and the output end of the liquid extraction component (32') is connected to the output end of the suction component (32) of the liquid acquisition mechanism (30) through the liquid replenishment pipeline (107).

3. The IoT vending system for tracing liquid products according to claim 2, characterized in that: The storage tank (102) is also equipped with a liquid level sensor (104), a positioner (105) and a flow rate sensor (106); a shielding plate driving device (1010) is provided inside the shell (101), and an identity label marking its identity information is provided on the storage tank (102). A second access channel (108) is provided between the storage cavity (1011) and the placement cavity (1012). A second shielding plate (109) is provided at the second access channel (108) for opening or closing the second access channel (108). The second shielding plate (109) is driven by the shielding plate driving device (1010) and can shield the identity information of the corresponding identity label on the storage tank (102).

4. An IoT-based sales method for tracing the origin of liquid products, employing the IoT sales system as described in claim 3, characterized in that... Includes the following steps: Step S100: The container (10) that has been filled with liquid to be sold, has been given a first identity tag and / or a second identity tag, and has been sealed is delivered to the smart vending device and brought close to the electronic lock (23) of the storage door of the machine body (20). The container identity reading and writing device inside the electronic lock (23) reads the first identity tag and / or the second identity tag. Step S200: When the first identity information in the first identity tag and / or the second identity information in the second identity tag read by the container identity reading device both match the first preset identity information, the electronic lock (23) of the storage door used to lock the storage door (22) is unlocked, the storage door (22) is opened, the container (10) containing the liquid to be sold is placed into the storage cavity (21) and the storage door (22) is closed, and the electronic lock (23) of the storage door locks the storage door (22). Step S300: After the liquid storage device confirms that the storage door electronic lock (23) has locked the storage door (22), the liquid identity reading and writing device (33) reads the third identity information in the third identity tag in the opening and closing cover electronic lock (114) and compares the read third identity information with the second preset identity information. When the third identity information matches the second preset identity information, the opening and closing cover electronic lock (114) used to lock the opening and closing cover (113) is unlocked and the opening and closing cover (113) is opened. Step S400: The moving plate (31) of the liquid acquisition mechanism (30) moves, so that the air exchange interface (35), liquid outlet interface (36) and power supply interface (37) on the moving plate (31) are connected to the air exchange port (19), liquid outlet port (110) and solenoid valve power supply port (111) respectively.

5. The IoT-based sales method for liquid products with traceability according to claim 4, characterized in that: Between step S300 and step S400, the following steps are also included: Step S350: When the opening and closing cover (113) is in the open state, the liquid identity reading and writing device (33) reads the fourth identity information in the fourth identity tag on the disposable sealing cover (115) and compares the fourth identity information with the third preset identity information. When the fourth identity information matches the third preset identity information, step S400 is executed. When a user purchases liquids through a smart vending machine, the following steps are performed: Step S500: The user places an order using the human-computer interaction display screen (50). After the order is successfully placed and payment is made, the electronic lock (43) of the cabinet door is unlocked, the cabinet door (42) is opened, and the user puts the container into the retrieval chamber (41). The suction component (32) of the liquid acquisition mechanism (30) is activated, the liquid discharge solenoid valve (17) is opened, and the liquid in the retrieval chamber (1101) is extracted through the suction component (32) and flows out into the user's container through the liquid outlet (45).

6. The IoT-based sales method for liquid products with traceability according to claim 5, characterized in that: When the container (10) is initially empty or when the liquid in the container (10) has been sold out, and it is necessary to fill or replenish the container (10) with liquid to be sold, the liquid storage and retrieval device is used to fill or replenish the container (10) with liquid to be sold, including the following steps: Step S600: When the container (10) is brought close to the body (20) of the liquid storage device, and close to the electronic lock (23) of the storage door of the body (20), the container identity reading and writing device in the electronic lock (23) reads the first identity tag and / or the second identity tag on the container (10); when the first identity information in the first identity tag and / or the second identity information in the second identity tag both match the first preset identity information, the electronic lock (23) used to lock the storage door (22) is unlocked, the staff opens the storage door (22), puts the container (10) to be replenished into the storage cavity (21) and closes the storage door (22), and the electronic lock (23) locks the storage door (22). If the container (10) was originally inside the body (20) of the liquid storage device and has sold part or all of the liquid in the holding chamber (1101), and the container (10) needs to be replenished with liquid to be sold in the holding chamber (1101) of the container (10) while it is still in place, then the container (10) is already in the storage chamber (21) of the body (20), and step S600 is not executed. Step S700: The movable plate (31) on the liquid acquisition mechanism (30) moves, so that the liquid inlet (15), the air exchange port (35) and the power supply port (37) on the movable plate (31) are connected to the liquid inlet (111), the air exchange port (19) and the solenoid valve power supply port (111) respectively. Step S800: The liquid to be replenished is filled or added into the holding chamber (1101) of the container (10) through the inlet (111) via a pipe.

7. The IoT-based sales method for liquid products with traceability according to claim 6, characterized in that: When filling or replenishing the container (10) with liquid for sale from the liquid storage device (100), the liquid access device must be installed next to the liquid storage device (100) before proceeding to step S600; and between steps S700 and S800, the following steps are also included: Step S710: The shielding plate driving device (1010) drives the second shielding plate (109) to move, opening the second inlet / outlet channel (108). The docking mechanism (103) performs the operation of verifying the identity of the opening and closing cover (113') on the cover (12'). After the identity verification of the opening and closing cover (113') is passed and the opening and closing cover (113') is opened, the docking mechanism (103) performs the operation of verifying the identity of each socket on the cover (12'). After the identity verification of each socket on the cover (12') is passed, the docking mechanism (103) performs the docking and conduction operation, so that each socket on the storage tank (102) is connected and conducted with each pair of interfaces of the docking mechanism (103). Step S720: Activate the suction component (32) of the liquid acquisition mechanism (30) to draw the liquid in the storage tank (102) into the holding chamber (1101) of the container (10) through the replenishment pipeline (107).

8. The IoT-based sales method for liquid products with traceability according to claim 7, characterized in that: When replenishing liquid into the storage tank (102) of the liquid storage device (100), the liquid is replenished into the storage tank (102) by using two sets of liquid storage devices (100) in combination, including the following steps: Step S900: One set of liquid storage devices (100) has a storage tank (102) containing liquid, while the other set of liquid storage devices (100) has a storage tank (102) without liquid. When replenishing liquid to the storage tank (102) without liquid, the two sets of liquid storage devices (100) are first connected to each other through their respective replenishment pipelines (107). After the two sets of liquid storage devices (100) are connected to each other through their respective replenishment pipelines (107), the shielding plate driving device (1010) of each liquid storage device (100) drives its respective second shielding plate (109) to move, so as to open the second inlet and outlet channels (108) of each liquid storage device (100). Step S1000: The two liquid storage devices (100) respectively perform their own authentication and docking operations. First, the docking mechanism (103) verifies the identity of the open and close cover (113') on the storage tank (102). After the authentication of the open and close cover (113') is passed and the open and close cover (113') is opened, the docking mechanism (103) verifies the identity of each socket on the cover (12'). After the authentication of each socket on the cover (12') is passed, the docking mechanism (103) performs the docking operation, so that each socket on the cover (12') of the storage tank (102) is connected and connected with each pair of interfaces on the docking mechanism (103); Step S1100: Start the suction component (32') on one of the liquid storage devices (100) to extract the liquid in the storage tank (102) containing liquid to the storage tank (102) that does not contain liquid.

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