Automatic liquid discharge and transfer system and working method

Abstract

The present invention provides an automatic liquid discharge and transfer system and operating method, comprising: an automatic liquid discharge system, a flow detection system, a total residual liquid tank system, and an automated guided vehicle (AGV) system. The automatic liquid discharge system is connected to the flow detection system, and waste liquid flows from the automatic liquid discharge system into the flow detection system for detection; the flow detection system is connected to the total residual liquid tank system, and waste liquid flows from the flow detection system into the total residual liquid tank system for collection; the total residual liquid tank system is connected to the automated guided vehicle (AGV) system, and waste liquid flows from the total residual liquid tank system into the AGV system for transport. This system can be controlled by the WMS system while completing complex processes, without requiring human intervention.

Description

Technical Field

[0001] The present invention relates to a device for treating waste liquid after formation of a secondary battery, and in particular to an automatic liquid discharge and transfer system and a working method. Background Art

[0002] Conventional waste liquid collection involves manually opening the manual valve of the residual liquid cup, collecting it with a cup, and then pouring it into a large residual liquid tank. The large residual liquid tank is then manually transported to the waste liquid treatment station. The entire process is time-consuming and labor-intensive, and the waste liquid is volatile and irritating, which will affect the working environment. At the same time, if the battery is undergoing a negative pressure formation process, if you want to discharge the waste liquid at this time, you must close the manual valve of the gas-liquid separator between the gas-liquid separator and the residual liquid cup to discharge the waste liquid. Otherwise, due to the existence of negative pressure, the waste liquid in the residual liquid cup will not only not be discharged, but will also cause the negative pressure to be unstable, thereby causing damage to the entire tray of batteries. In addition, if the manual valve of the residual liquid cup is not closed tightly, it will also cause the negative pressure maintenance to fail, affecting production capacity and battery quality. These are difficult to avoid during manual operation, so it is necessary to provide a systematic, automatic liquid discharge and transfer system that does not require manual operation. Summary of the Invention

[0003] In view of the defects in the prior art, the purpose of the present invention is to provide an automatic liquid discharge and transfer system and a working method.

[0004] According to the present invention, an automatic liquid discharge and transfer system is provided, which includes: an automatic liquid discharge system, a flow detection system, a total residual liquid tank system, an AGV system, and a WMS system. The WMS system (Warehouse Management System) is a warehouse management system well known in the art;

[0005] The automatic liquid drainage system is connected to the flow detection system, and the waste liquid flows from the automatic liquid drainage system into the flow detection system for detection;

[0006] The flow detection system is connected to the total residual liquid tank system, and the waste liquid flows from the flow detection system into the total residual liquid tank system for collection;

[0007] The total residual liquid tank system is connected to the AGV trolley system, and the waste liquid flows from the total residual liquid tank system into the AGV trolley system and is transported away by the AGV trolley system;

[0008] The liquid flow meter slave PLC, the total residual liquid tank slave PLC and the large residual liquid tank slave PLC are all connected to the WMS system;

[0009] The WMS system controls the waste liquid of the automatic drainage system to flow into the flow detection system in one direction;

[0010] The WMS system is used to detect whether waste liquid continues to be discharged from the flow detection system, so as to control the waste liquid to flow from the flow detection system into the total residual liquid tank system for collection;

[0011] The amount of waste liquid in the total residual liquid tank system is detected by the WMS system, and the AGV system is controlled to transport the waste liquid from the total residual liquid tank system.

[0012] Preferably, the automatic liquid discharge system comprises: a gas-liquid separator, a gas-liquid separator manual valve, a residual liquid cup, a residual liquid cup manual valve and a liquid discharge solenoid valve;

[0013] The gas-liquid separator is connected to the gas-liquid separator manual valve, the gas-liquid separator manual valve is connected to the residual liquid cup, the residual liquid cup is connected to the residual liquid cup manual valve, and the residual liquid cup manual valve is connected to the drain solenoid valve.

[0014] Preferably, the flow detection system comprises: a one-way valve, a one-way valve bus, a liquid flow meter, a liquid flow meter slave PLC and a liquid flow meter solenoid valve;

[0015] The liquid inlet of the one-way valve is connected to the liquid discharge solenoid valve, and the gas-liquid separator, the gas-liquid separator manual valve, the residual liquid cup, the residual liquid cup manual valve, the liquid discharge solenoid valve and the one-way valve are provided in one or more groups, and the liquid outlets of the multiple groups of the one-way valves are connected to the one-way valve bus;

[0016] The one-way valve bus is connected to the liquid flow meter, and the liquid flow meter is connected to the liquid flow meter slave PLC and the liquid flow meter solenoid valve.

[0017] Preferably, the total residual liquid tank system includes: a liquid flow meter bus, a total residual liquid tank slave PLC, a total residual liquid tank body, a total residual liquid tank solenoid valve, and a total residual liquid tank drain port;

[0018] The liquid flow meter solenoid valve is connected to the liquid flow meter bus, the liquid flow meter bus is connected to the total residual liquid tank body, the total residual liquid tank body is connected to the total residual liquid tank solenoid valve, and the total residual liquid tank solenoid valve is connected to the total residual liquid tank discharge port;

[0019] The total residual liquid tank slave PLC is installed on the total residual liquid tank body.

[0020] Preferably, a first total residual liquid tank level sensor, a second total residual liquid tank level sensor and a third total residual liquid tank level sensor are installed on the side of the total residual liquid tank body from high to low respectively.

[0021] Preferably, the AGV system includes: a large residual liquid tank receiving port, a photoelectric sensor, a large residual liquid tank receiving port solenoid valve, a large residual liquid tank, a large residual liquid tank solenoid valve, a large residual liquid tank discharge port, a large residual liquid tank slave PLC and an AGV body;

[0022] The large residual liquid tank liquid receiving port is connected to the large residual liquid tank liquid receiving port solenoid valve, the large residual liquid tank liquid receiving port solenoid valve is connected to the large residual liquid tank, the large residual liquid tank is connected to the large residual liquid tank solenoid valve, and the large residual liquid tank solenoid valve is connected to the large residual liquid tank discharge port;

[0023] The large residual liquid tank is installed on the AGV trolley body, the large residual liquid tank slave PLC is installed on the AGV trolley body, and the photoelectric sensor is installed at the liquid receiving port of the large residual liquid tank.

[0024] Preferably, a first large residual liquid tank level sensor and a second large residual liquid tank level sensor are respectively installed on the side of the large residual liquid tank from high to low.

[0025] Preferably, the liquid discharge solenoid valve and the liquid flow meter solenoid valve are connected to the liquid flow meter slave PLC;

[0026] The first total residual liquid tank liquid level sensor, the second total residual liquid tank liquid level sensor, the third total residual liquid tank liquid level sensor, and the total residual liquid tank solenoid valve are connected to the total residual liquid tank slave PLC;

[0027] The photoelectric sensor, the large residual liquid tank liquid receiving port electromagnetic valve, the first large residual liquid tank liquid level sensor, the second large residual liquid tank liquid level sensor, and the large residual liquid tank electromagnetic valve are connected to the large residual liquid tank slave PLC.

[0028] Preferably, when the AGV system takes out waste liquid from the total residual liquid tank system, the total residual liquid tank discharge port is connected to the large residual liquid tank liquid receiving port;

[0029] The discharge port of the total residual liquid tank is configured as a pipe structure with a tapered end, and the diameter of the discharge port of the total residual liquid tank is smaller than the diameter of the liquid receiving port of the large residual liquid tank;

[0030] The liquid discharge solenoid valve and the one-way valve, as well as the liquid flow meter solenoid valve and the liquid flow meter bus bar are connected by corrosion-resistant pipes.

[0031] Preferably, a working method of the automatic liquid discharge and transfer system according to claim 1 comprises the following steps:

[0032] Step S1: The gas-liquid separator manual valve and the residual liquid cup manual valve are in a normally open state, and the WMS system opens the plurality of drain solenoid valves in sequence. The waste liquid in the residual liquid cup flows from the opened drain solenoid valves through the one-way valves and is then converged to the liquid flow meter through the one-way valve busbar.

[0033] Step S2, the liquid flow meter records the discharge volume and uploads it to the WMS system. When no waste liquid is discharged, the solenoid valve of the liquid flow meter is opened, and the waste liquid enters the total residual liquid tank body through the liquid flow meter bus, and the solenoid valve of the liquid flow meter is closed;

[0034] Step S3: When the waste liquid in the total residual liquid tank body is sensed by the second total residual liquid tank level sensor, the WMS system controls the AGV system to take the liquid. When the first total residual liquid tank level sensor senses the waste liquid, the WMS system triggers an alarm to notify manual processing.

[0035] Step S4, when the AGV system takes liquid, the discharge port of the total residual liquid tank is connected to the liquid receiving port of the large residual liquid tank, and the photoelectric sensor detects whether the connection is in place;

[0036] Step S5, when the discharge port of the total residual liquid tank is docked with the liquid receiving port of the large residual liquid tank, the solenoid valve of the total residual liquid tank and the solenoid valve of the liquid receiving port of the large residual liquid tank are opened, and the waste liquid enters the large residual liquid tank;

[0037] Step S6: When the liquid level sensor of the first large residual liquid tank senses waste liquid, the WMS system first closes the solenoid valve of the total residual liquid tank and then closes the solenoid valve of the liquid receiving port of the large residual liquid tank;

[0038] In step S7, the AGV vehicle body drives to the waste liquid treatment station.

[0039] Preferably, the AGV vehicle in this field refers to an automatic guided vehicle, which is an existing transport vehicle, and the WMS system in this field refers to a warehouse management system, which is an existing warehouse management system.

[0040] Preferably, the gas-liquid separator manual valve and the residual liquid cup manual valve are in a normally open state.

[0041] Preferably, the liquid flow meter slave PLC, the total residual liquid tank slave PLC and the large residual liquid tank slave PLC are connected to the WMS system using signals.

[0042] Preferably, the AGV vehicle body is provided with laser navigation, TOF (time of flight) obstacle avoidance, warning lights and emergency brakes.

[0043] Preferably, the plurality of liquid discharge solenoid valves are opened individually.

[0044] Preferably, the one-way valve busbar is vertical to ensure that all waste liquid will not accumulate in the one-way valve busbar.

[0045] Preferably, the liquid flow meter bus is provided with a plurality of interfaces, each of which can correspond to a liquid flow meter of a single storage location, thereby realizing the confluence of waste liquids from multiple storage locations.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. This system can realize complicated processes while being controlled through the WMS system, without the need for human participation in the whole process;

[0048] 2. This system adopts systematic and standardized design to reduce design costs and facilitate subsequent use;

[0049] 3. In this application, the gas-liquid separator is in a normally open state, which avoids repeated operation of the gas-liquid separator to cause air leakage, greatly reducing the frequency of gas-liquid separator replacement, and even to the extent that it does not need to be replaced, thereby reducing maintenance costs;

[0050] 4. This application monitors the discharge volume of a single storage location, sorts out abnormal storage locations, and improves battery quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0052] Figure 1 A schematic structural diagram of the automatic liquid discharge and transfer system provided in an embodiment of the present application;

[0053] As shown in the figure:

[0054] DETAILED DESCRIPTION

[0055] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0056] like Figure 1As shown, the automatic liquid discharge and transfer system provided in this embodiment includes: an automatic liquid discharge system, a flow detection system, a total residual liquid tank system, an AGV system, and a WMS system 30. The automatic liquid discharge system is connected to the flow detection system, and waste liquid flows from the automatic liquid discharge system into the flow detection system for detection. The flow detection system is connected to the total residual liquid tank system, and waste liquid flows from the flow detection system into the total residual liquid tank system for collection. The total residual liquid tank system is connected to the AGV system, and waste liquid flows from the total residual liquid tank system into the AGV system and is transported away by the AGV system. The automatic liquid discharge system, flow detection system, total residual liquid tank system, and AGV system are all controlled by the WMS system 30.

[0057] The automatic liquid drainage system is used to discharge waste liquid in a unidirectional manner to a flow detection system. In one possible embodiment, the automatic liquid drainage system may include: a gas-liquid separator 1, a gas-liquid separator manual valve 2, a residual liquid cup 3, a residual liquid cup manual valve 4, and a liquid drainage solenoid valve 5; the gas-liquid separator 1 is connected to the gas-liquid separator manual valve 2, the gas-liquid separator manual valve 2 is connected to the residual liquid cup 3, the residual liquid cup 3 is connected to the residual liquid cup manual valve 4, and the residual liquid cup manual valve 4 is connected to the liquid drainage solenoid valve 5. During operation of the automatic liquid drainage system, the gas-liquid separator manual valve 2 between the gas-liquid separator 1 and the residual liquid cup 3 is normally open, and the residual liquid cup manual valve 4 between the residual liquid cup 3 and the liquid drainage solenoid valve 5 is also normally open. In other possible implementations, the automatic liquid discharge system may also not include the gas-liquid separator manual valve 2 and the residual liquid cup manual valve 4. The gas-liquid separator 1 is directly connected to the residual liquid cup 3, and the residual liquid cup 3 is directly connected to the drain solenoid valve 5. After the waste liquid from the gas-liquid separator 1 flows into the residual liquid cup 3, it flows from the residual liquid cup 3 to the drain solenoid valve 5. In the embodiment of the present application, the automatic liquid discharge system including the gas-liquid separator 1, the gas-liquid separator manual valve 2, the residual liquid cup 3, the residual liquid cup manual valve 4 and the drain solenoid valve 5 is used as an example for description, but the invention is not limited thereto.

[0058] The automatic drainage system may include one or more groups: a gas-liquid separator 1, a gas-liquid separator manual valve 2, a residual liquid cup 3, a residual liquid cup manual valve 4 and a drainage solenoid valve 5. Figure 1 The automatic liquid drainage system is described as including 4 groups as an example, but the embodiments of the present application are not limited to this. In other possible implementations, the automatic liquid drainage system can also include 2 groups, 3 groups, 5 groups, 6 groups, etc., and can be specifically set according to actual conditions.

[0059] When the automatic liquid discharge system includes multiple groups: gas-liquid separator 1, gas-liquid separator manual valve 2, residual liquid cup 3, residual liquid cup manual valve 4 and liquid discharge solenoid valve 5, the WMS system 30 controls the multiple liquid discharge solenoid valves 5 to open in sequence to avoid the situation where multiple liquid discharge solenoid valves 5 are opened simultaneously at the same time. After the negative pressure formation process is completed, the residual liquid cup 3 has stored the waste liquid generated by this batch of batteries. The WMS system 30 checks whether there are liquid discharge solenoid valves 5 opened in other storage locations. According to the first-in-first-out principle, if there is a liquid discharge solenoid valve 5 that is open, the other liquid discharge solenoid valves 5 will wait. If not, the remaining liquid discharge solenoid valve 5 will be opened. At this time, the waste liquid originally stored in the residual liquid cup 3 will flow along the pipeline to the flow detection system.

[0060] The flow detection system is used to detect whether there is continued discharge of waste liquid and feed it back to the WMS system 30. The WMS system 30 controls the waste liquid to flow from the flow detection system into the total residual liquid tank system based on the feedback; in a possible embodiment, the flow detection system includes: a one-way valve 6, a one-way valve bus 7, a liquid flow meter 8, a liquid flow meter slave PLC9 and a liquid flow meter solenoid valve 10; the flow detection system can be connected to the discharge battery valve 5 of the automatic drainage system through the one-way valve 6 to allow the waste liquid to flow from the automatic drainage system into the flow detection system.

[0061] Exemplarily, the upper end of the one-way valve 6 can be connected to the drain solenoid valve 5 by using an anti-corrosion pipe. By adopting the one-way valve 6, the waste liquid can be prevented from flowing back, ensuring the safety of the automatic drain transfer system, and the one-way valve 6 and the drain battery valve 5 are connected by an anti-corrosion transparent air pipe, which can further ensure the reliability of the connecting pipe. In other possible embodiments, the one-way valve 6 and the drain solenoid valve 5 can be connected by using an anti-corrosion transparent pipe, which not only ensures the reliability of the connecting pipe, but also allows the drainage status of the automatic drain system to be observed.

[0062] The one-way valve 6 can be set to one or more, respectively connected to each group of drainage solenoid valves 5 in the automatic drainage system. In actual use, each warehouse can be equipped with a group of gas-liquid separators 1, gas-liquid separator manual valves 2, residual liquid cups 3, residual liquid cup manual valves 4, drainage solenoid valves 5 and one-way valves 6. The liquid outlets of multiple groups of one-way valves 6 are connected to the one-way valve bus 7, the one-way valve bus 7 is connected to the liquid flow meter 8, and the liquid flow meter 8 is connected to the liquid flow meter slave PLC 9 and the liquid flow meter solenoid valve 10. The waste liquid flows from the one-way valve 6 along the corrosion-resistant pipe into the one-way valve bus 7. The one-way valve bus 7 can be vertical to ensure that all the waste liquid flowing down will not remain in the one-way valve bus 7 and can all flow into the liquid flow meter 8. When the WMS system 30 opens the discharge solenoid valve 5, it notifies the liquid flow meter slave PLC9 that it can start recording the waste liquid volume in real time. The analog output of the liquid flow meter 8 is connected to the liquid flow meter slave PLC9. Generally, this process does not exceed 20 seconds. If the amount of waste liquid does not increase within 5 seconds, it is considered that the waste liquid in the residual liquid cup 3 has been completely discharged, and the discharge volume at this time is recorded. Among them, the analog output of the liquid flow meter 8 refers to the analog signal value corresponding to the actual flow rate measured by the liquid flow meter 8 when the waste liquid flows through the liquid flow meter 8, and the analog signal value is sent to the liquid flow meter slave PLC9 in real time. After processing, the liquid flow meter slave PLC9 obtains the actual flow value of the waste liquid and records it in real time.

[0063] The liquid flow meter slave PLC9 synchronously uploads the actual waste liquid flow rate to the WMS system 30 for recording. The WMS system can also compare the current discharge situation of this storage location with previous discharges and other storage locations to determine whether the storage location is abnormal and requires maintenance. The liquid flow meter slave PLC9 controls the liquid flow meter solenoid valve 10 to open, and the waste liquid is completely discharged from the liquid flow meter 8. This process lasts approximately 10 seconds, at which point the liquid flow meter slave PLC9 controls the liquid flow meter solenoid valve 10 to close.

[0064] After the waste liquid flows out of the flow detection system, it flows into the total residual liquid tank system, which is used to collect the outflowing waste liquid and detect the collected waste liquid volume. When the total residual liquid tank system detects that the waste liquid volume reaches the target value, it feeds back the information to the WMS system 30.

[0065] In one possible embodiment, the automatic liquid discharge and transfer system provided in the embodiment of the present application, the total residual liquid tank system may include: a liquid flow meter bus 12, a total residual liquid tank slave PLC 13, a total residual liquid tank body 14, a total residual liquid tank solenoid valve 18 and a total residual liquid tank discharge port 19.

[0066] Based on the above embodiment, the total residual liquid tank system can be connected to the liquid flow meter solenoid valve 10 of the flow detection system via a liquid flow meter bus 12. A corrosion-resistant pipe 11 can be used to connect the liquid flow meter solenoid valve 10 and the liquid flow meter bus 12. There can be one or more liquid flow meter busses 12, and each liquid flow meter bus 12 can have multiple interfaces corresponding to multiple waste liquids discharged from the liquid flow meter 8.

[0067] The liquid flow meter bus 12 is connected to the total residual liquid tank body 14, the total residual liquid tank body 14 is connected to the total residual liquid tank solenoid valve 18, the total residual liquid tank solenoid valve 18 is connected to the total residual liquid tank discharge port 19, and the total residual liquid tank slave PLC 13 is installed on the total residual liquid tank body 14.

[0068] In one possible embodiment, a first total residual liquid tank level sensor 15, a second total residual liquid tank level sensor 16, and a third total residual liquid tank level sensor 17 are installed on the side of the total residual liquid tank body 14, from high to low. The total residual liquid tank body 14 stores waste liquid from the entire production line. The first total residual liquid tank level sensor 15, the second total residual liquid tank level sensor 16, and the third total residual liquid tank level sensor 17 are used to detect the liquid height in the total residual liquid tank body 14. The total residual liquid tank slave PLC 13 is used to control the total residual liquid tank solenoid valve 18 to open the total residual liquid tank drain port 19 to discharge the waste liquid. When the third total residual liquid tank level sensor 17 is triggered, it indicates that the total residual liquid tank body 14 has waste liquid. The third total residual liquid tank level sensor 17 is installed at the bottom of the side of the total residual liquid tank body 14. When the second total residual liquid tank level sensor 16 is triggered, it indicates that the waste liquid in the total residual liquid tank body 14 has reached the target value, and the WMS system 30 can be notified to remove the waste liquid. The second total residual liquid tank level sensor 16 is installed in the middle of the side of the total residual liquid tank body 14 and can be adjusted up and down as needed. After the first total residual liquid tank level sensor 15 is triggered, it indicates that the total residual liquid tank body 14 is almost full. The first total residual liquid tank level sensor 15 is installed at the top of the side of the total residual liquid tank body 14 and can be adjusted up and down as needed, but generally speaking, it cannot reach the first total residual liquid tank level sensor 15. It is used as a warning to inform the WMS system 30 that manual intervention may be required. The total residual liquid tank slave PLC 13 is mainly used to communicate with the WMS system 30, detect the status of the three liquid level sensors, and control the switch of the total residual liquid tank solenoid valve 18.

[0069] In other possible implementations, the second total residual liquid tank level sensor 16 may be provided only in the middle of the side of the total residual liquid tank body 14. Alternatively, two total residual liquid tank level sensors may be provided, including the second total residual liquid tank level sensor 16 and the first total residual liquid tank level sensor 15 or the third total residual liquid tank level sensor 17.

[0070] When the waste liquid in the total residual liquid tank body 14 reaches the target value, a signal can be sent to the WMS system, thereby enabling the WMS system to control the AGV system to transport the waste liquid in the total residual liquid tank body 14 .

[0071] In one possible embodiment, the AGV vehicle system may include: a large residual liquid tank liquid receiving port 20, a large residual liquid tank liquid receiving port solenoid valve 22, a large residual liquid tank 23, a large residual liquid tank solenoid valve 26, a large residual liquid tank liquid discharge port 27, a large residual liquid tank slave PLC 28 and an AGV vehicle body 29.

[0072] The AGV trolley system is connected to the main residual liquid tank body 14 through the large residual liquid tank liquid receiving port 20, the large residual liquid tank liquid receiving port 20 is connected to the large residual liquid tank liquid receiving port solenoid valve 22, the large residual liquid tank liquid receiving port solenoid valve 22 is connected to the large residual liquid tank 23, the large residual liquid tank 23 is connected to the large residual liquid tank solenoid valve 26, the large residual liquid tank solenoid valve 26 is connected to the large residual liquid tank discharge port 27, the large residual liquid tank 23 is installed on the AGV trolley body 29, and the large residual liquid tank slave PLC 28 is installed on the AGV trolley body 29.

[0073] When the total residual liquid tank body 14 reaches a state where it needs to be drained, the WMS system 30 calls the AGV vehicle body 29 to collect the liquid. Specifically, during docking, the total residual liquid tank discharge port 19 on the total residual liquid tank body 14 is docked with the large residual liquid tank liquid receiving port 20, and the waste liquid flows from the total residual liquid tank body 14 into the large residual liquid tank 23 through the large residual liquid tank liquid receiving port 20 and the total residual liquid tank discharge port 19. Optionally, the total residual liquid tank discharge port 19 on the total residual liquid tank body 14 can be configured as a tapered pipe with a smaller diameter than the large residual liquid tank liquid receiving port 20 to ensure correct docking.

[0074] In order to further ensure the accurate connection between the total residual liquid tank body 14 and the AGV trolley system, a photoelectric sensor 21 can also be set on the large residual liquid tank liquid receiving port 20. When the total residual liquid tank discharge port 19 is connected to the large residual liquid tank liquid receiving port 20, the photoelectric sensor 21 detects whether it is correctly connected. If it is not correctly connected, the large residual liquid tank liquid receiving port solenoid valve 22 and the total residual liquid tank solenoid valve 18 are not allowed to open to prevent the waste liquid from volatilizing. After the correct connection, the WMS system 30 controls the total residual liquid tank slave PLC13 and the large residual liquid tank slave PLC28 to open the large residual liquid tank liquid receiving port solenoid valve 22 and the total residual liquid tank solenoid valve 18. At this time, the waste liquid flows from the total residual liquid tank body 14 into the large residual liquid tank 23.

[0075] The embodiment of the present application does not limit the specific structure and shape of the large residual liquid tank 23. In one possible implementation, a first large residual liquid tank level sensor 24 and a second large residual liquid tank level sensor 25 are installed on the side of the large residual liquid tank 23 from high to low. There are two liquid level sensors in the large residual liquid tank 23, namely the first large residual liquid tank level sensor 24 and the second large residual liquid tank level sensor 25. The function of the second large residual liquid tank level sensor 25 is to detect whether there is liquid in the large residual liquid tank 23. It is generally installed at the bottom of the side of the tank body. The first large residual liquid tank level sensor 24 is used to check whether it is close to full load and needs to stop receiving liquid. It is generally installed at a position higher on the side of the tank body and can be moved according to needs.

[0076] When the liquid level sensor 24 of the first large residual liquid tank is triggered, indicating that the level has reached the level required for transportation, the main residual liquid tank solenoid valve 18 is first closed to allow all the residual liquid in the main residual liquid tank discharge port 19 to flow into the large residual liquid tank 23. This takes about 45 seconds. Then, the large residual liquid tank liquid inlet solenoid valve 22 is closed, thus completing the transfer of waste liquid from the main residual liquid tank body 14 to the large residual liquid tank 23. The WMS system 30 then drives the AGV trolley body 29 to drive to the waste liquid treatment station. The AGV trolley body 29 has an obstacle avoidance function and docks with the waste liquid treatment station after arriving at the waste liquid treatment station. The docking method is the same as the docking method between the main residual liquid tank body 14 and the large residual liquid tank 23. The large residual tank discharge port 27 docks with the waste liquid treatment station, and the two are physically connected. The large residual liquid tank solenoid valve 26 is opened, and all waste liquid flows from the large residual tank discharge port 27 into the final waste liquid treatment station. Among them, the front of the AGV car body 29 is equipped with laser navigation, TOF obstacle avoidance, warning lights, emergency brakes and other safety devices to ensure safe driving during automatic transportation. The WMS system 30 is used to dispatch the entire regional logistics transportation and other instructions based on information data.

[0077] The liquid flow meter slave PLC9, the total residual liquid tank slave PLC13, and the large residual liquid tank slave PLC28 are all connected to the WMS system 30. The liquid discharge solenoid valve 5 and the liquid flow meter solenoid valve 10 are connected to the liquid flow meter slave PLC9. The first total residual liquid tank level sensor 15, the second total residual liquid tank level sensor 16, the third total residual liquid tank level sensor 17, and the total residual liquid tank solenoid valve 18 are connected to the total residual liquid tank slave PLC13. The photoelectric sensor 21, the large residual liquid tank liquid inlet solenoid valve 22, the first large residual liquid tank level sensor 24, the second large residual liquid tank level sensor 25, and the large residual liquid tank solenoid valve 26 are connected to the large residual liquid tank slave PLC28. The liquid flow meter slave PLC9, the total residual liquid tank slave PLC13, and the large residual liquid tank slave PLC28 are programmable logic controllers known in the art and are used to implement control functions. The photoelectric sensor 21, the first large residual liquid tank level sensor 24, the second large residual liquid tank level sensor 25, the first total residual liquid tank level sensor 15, the second total residual liquid tank level sensor 16, and the third total residual liquid tank level sensor 17 are known sensor elements. In the process of this embodiment, all solenoid valves are controlled by corresponding PLC modules, and the WMS system 30 performs global scheduling. The WMS system 30 communicates with each slave PLC and the AGV vehicle body 29 respectively, ensuring that there is no human intervention in the entire process, reducing the investment in human capital, and also reducing the possibility of waste liquid volatilization. It can also monitor whether there are abnormalities in the negative pressure storage location. For example, if the normal flow rate is 50-55ML, and a certain storage location subsequently has a flow rate greater than 55ML for multiple times, then we can confirm that there is an abnormality in this negative pressure storage location and inform the equipment personnel and production personnel through the WMS system 30.

[0078] The present application also provides an embodiment of a working method of an automatic liquid discharge and transfer system, which is performed by the automatic liquid discharge and transfer system provided by any of the above embodiments of the present application, and includes:

[0079] The WMS system 30 controls the one-way flow of waste liquid from the automatic liquid discharge system to the flow detection system: when discharging waste liquid, the WMS system 30 controls and opens the liquid discharge solenoid valve 5 of the automatic liquid discharge system, and the waste liquid is discharged from the liquid discharge solenoid valve 5;

[0080] The WMS system 30 detects the waste liquid discharge status in the flow detection system to control the waste liquid from flowing into the total residual liquid tank system for summary: the waste liquid discharged by the discharge solenoid valve 5 will be detected by the liquid flow meter 8 when flowing through the liquid flow meter 8 of the flow detection system. The liquid flow meter 8 feeds back the detection data to the WMS system 30 through the liquid flow meter slave PLC 9. When there is no waste liquid discharged, the WMS system 30 opens the liquid flow meter solenoid valve 10, and the waste liquid flows out from the liquid flow meter solenoid valve 10 and is summarized into the total residual liquid tank system through the liquid flow meter bus 12;

[0081] The amount of waste liquid in the total residual liquid tank system is detected by the WMS system 30, and the AGV trolley system is controlled to transport the waste liquid from the total residual liquid tank system: the total residual liquid tank system is equipped with a liquid level sensor. When the waste liquid in the total residual liquid tank system accumulates to the point where it is sensed by the second total residual liquid tank liquid level sensor 16, the second total residual liquid tank liquid level sensor 16 will feedback information to the WMS system 30 through the total residual liquid tank slave PLC13. The WMS system 30 then controls the AGV trolley system to transport the waste liquid from the total residual liquid tank system through the large residual liquid tank slave PLC28 based on the feedback information.

[0082] Illustratively, the automatic liquid discharge system in the embodiment of the present application may include: a gas-liquid separator manual valve 2, a residual liquid cup 3, a residual liquid cup manual valve 4 and a liquid discharge solenoid valve 5; the flow detection system includes: a one-way valve 6, a one-way valve bus 7, a liquid flow meter 8 and a liquid flow meter solenoid valve 10; the total residual liquid tank system includes: a liquid flow meter bus 12, a total residual liquid tank body 14, a first total residual liquid tank level sensor 15, a second total residual liquid tank level sensor 16, a total residual liquid tank solenoid valve 18 and a total residual liquid tank discharge port 19; the AGV trolley system includes: a large residual liquid tank liquid receiving port 20, a photoelectric sensor 21, a large residual liquid tank liquid receiving port solenoid valve 22, a large residual liquid tank 23, a first large residual liquid tank level sensor 24 and an AGV trolley body 29.

[0083] The working method of the automatic liquid discharge and transfer system provided in the embodiment of the present application may specifically include:

[0084] Step S1: The gas-liquid separator manual valve 2 and the residual liquid cup manual valve 4 are in a normally open state. The WMS system 30 opens multiple drain solenoid valves 5 in sequence. The waste liquid in the residual liquid cup 3 flows from the opened drain solenoid valves 5 through the one-way valve 6 and then through the one-way valve bus 7 to the liquid flow meter 8.

[0085] Step S2: The liquid flow meter 8 records the discharge volume and uploads it to the WMS system 30. When no waste liquid is discharged, the liquid flow meter solenoid valve 10 is opened, and the waste liquid enters the total residual liquid tank body 14 through the liquid flow meter bus 12. The liquid flow meter solenoid valve 10 is closed.

[0086] Step S3: When the waste liquid in the total residual liquid tank body 14 is sensed by the second total residual liquid tank level sensor 16, the WMS system 30 controls the AGV system to take the liquid. When the first total residual liquid tank level sensor 15 senses the waste liquid, the WMS system 30 triggers an alarm to notify manual processing.

[0087] Step S4: When the AGV system takes liquid, the total residual liquid tank discharge port 19 is connected to the large residual liquid tank receiving port 20, and the photoelectric sensor 21 detects whether the connection is in place;

[0088] Step S5: When the total residual liquid tank discharge port 19 is connected to the large residual liquid tank receiving port 20, the total residual liquid tank solenoid valve 18 and the large residual liquid tank receiving port solenoid valve 22 are opened, and the waste liquid enters the large residual liquid tank 23;

[0089] Step S6: When the liquid level sensor 24 of the first large residual liquid tank senses waste liquid, the WMS system 30 first closes the main residual liquid tank solenoid valve 18 and then closes the large residual liquid tank liquid receiving port solenoid valve 22;

[0090] In step S7, the AGV trolley body 29 drives to the waste liquid treatment station.

[0091] The working method of the automatic liquid drainage and transfer system provided in the embodiment of the present application is not limited to the above-mentioned steps S1-S7 in terms of its steps and sequence, and can be adjusted according to the specific structure of the automatic liquid drainage and transfer system. For example, some steps can be omitted or added, or the sequence of the above-mentioned steps can be adjusted according to the structure of the automatic liquid drainage and transfer system, etc. This embodiment of the present application will not go into details about this.

[0092] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0093] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A working method of an automatic liquid discharge and transfer system, characterized in that: The automatic liquid discharge and transfer system includes: an automatic liquid discharge system, a flow detection system, a total residual liquid tank system, an AGV trolley system and a WMS system (30); The automatic liquid discharge system comprises: a gas-liquid separator manual valve (2), a residual liquid cup (3), a residual liquid cup manual valve (4) and a liquid discharge solenoid valve (5); The flow detection system comprises: a one-way valve (6), a one-way valve bus (7), a liquid flow meter (8), and a liquid flow meter solenoid valve (10); The total residual liquid tank system comprises: a liquid flow meter bus (12), a total residual liquid tank body (14), a first total residual liquid tank liquid level sensor (15), a second total residual liquid tank liquid level sensor (16), a total residual liquid tank solenoid valve (18), and a total residual liquid tank discharge port (19); The AGV system comprises: a large residual liquid tank receiving port (20), a photoelectric sensor (21), a large residual liquid tank receiving port electromagnetic valve (22), a large residual liquid tank (23), a first large residual liquid tank level sensor (24) and an AGV body (29); The method specifically includes: Step S1: The gas-liquid separator manual valve (2) and the residual liquid cup manual valve (4) are in a normally open state, and the WMS system (30) opens the plurality of liquid discharge solenoid valves (5) in sequence, and the waste liquid in the residual liquid cup (3) flows from the opened liquid discharge solenoid valves (5) through the one-way valve (6) and is then converged to the liquid flow meter (8) through the one-way valve bus (7); Step S2, the liquid flow meter (8) records the discharge volume and uploads it to the WMS system (30); when no waste liquid is discharged, the liquid flow meter solenoid valve (10) is opened, and the waste liquid enters the total residual liquid tank body (14) through the liquid flow meter bus (12), and the liquid flow meter solenoid valve (10) is closed; Step S3, when the waste liquid in the total residual liquid tank body (14) is sensed by the second total residual liquid tank level sensor (16), the WMS system (30) controls the AGV system to come and take the liquid; when the first total residual liquid tank level sensor (15) senses the waste liquid, the WMS system (30) triggers an alarm to notify manual processing; Step S4, when the AGV system takes liquid, the total residual liquid tank discharge port (19) is docked with the large residual liquid tank liquid receiving port (20), and the photoelectric sensor (21) detects whether the docking is in place; Step S5, when the total residual liquid tank discharge port (19) is docked with the large residual liquid tank liquid receiving port (20), the total residual liquid tank solenoid valve (18) and the large residual liquid tank liquid receiving port solenoid valve (22) are opened, and the waste liquid enters the large residual liquid tank (23); Step S6, when the first large residual liquid tank level sensor (24) senses waste liquid, the WMS system (30) first closes the total residual liquid tank solenoid valve (18), and then closes the large residual liquid tank liquid receiving port solenoid valve (22); In step S7, the AGV vehicle body (29) drives to the waste liquid treatment station.

2. The working method of the automatic liquid discharge and transfer system according to claim 1, characterized in that: The gas-liquid separator (1) is connected to the gas-liquid separator manual valve (2), the gas-liquid separator manual valve (2) is connected to the residual liquid cup (3), the residual liquid cup (3) is connected to the residual liquid cup manual valve (4), the residual liquid cup manual valve (4) is connected to the liquid discharge solenoid valve (5), and the liquid discharge solenoid valve (5) is connected to the flow detection system; The gas-liquid separator (1), the gas-liquid separator manual valve (2), the residual liquid cup (3), the residual liquid cup manual valve (4), and the liquid discharge solenoid valve (5) are provided in one or more groups.

3. The working method of the automatic liquid discharge and transfer system according to claim 1 or 2, characterized in that: The liquid flow meter bus (12) is connected to the flow detection system, the liquid flow meter bus (12) is connected to the total residual liquid tank body (14), the total residual liquid tank body (14) is connected to the total residual liquid tank electromagnetic valve (18), and the total residual liquid tank electromagnetic valve (18) is connected to the total residual liquid tank discharge port (19); The total residual liquid tank body (14) is equipped with a total residual liquid tank slave PLC (13).

4. The working method of the automatic liquid discharge and transfer system according to claim 3, characterized in that: A first total residual liquid tank level sensor (15), a second total residual liquid tank level sensor (16) and a third total residual liquid tank level sensor (17) are respectively installed on the side of the total residual liquid tank body (14) from high to low; The first total residual liquid tank level sensor (15), the second total residual liquid tank level sensor (16), the third total residual liquid tank level sensor (17), and the total residual liquid tank solenoid valve (18) are connected to the total residual liquid tank slave PLC (13).

5. The working method of the automatic liquid discharge and transfer system according to claim 1 or 2, characterized in that: The large residual liquid tank liquid receiving port (20) is connected to the large residual liquid tank liquid receiving port electromagnetic valve (22), the large residual liquid tank liquid receiving port electromagnetic valve (22) is connected to the large residual liquid tank (23), the large residual liquid tank (23) is connected to the large residual liquid tank electromagnetic valve (26), and the large residual liquid tank electromagnetic valve (26) is connected to the large residual liquid tank liquid discharge port (27); The large residual liquid tank (23) is installed on the AGV trolley body (29), a large residual liquid tank slave PLC (28) is installed on the AGV trolley body (29), and the photoelectric sensor (21) is installed at the liquid receiving port (20) of the large residual liquid tank.

6. The operating method of the automatic liquid discharge and transfer system according to claim 5, characterized in that: A first large residual liquid tank level sensor (24) and a second large residual liquid tank level sensor (25) are respectively installed on the side of the large residual liquid tank (23) from high to low; The photoelectric sensor (21), the large residual liquid tank liquid inlet electromagnetic valve (22), the first large residual liquid tank liquid level sensor (24), the second large residual liquid tank liquid level sensor (25), and the large residual liquid tank electromagnetic valve (26) are connected to the large residual liquid tank slave PLC (28); The total residual liquid tank system includes a total residual liquid tank discharge port (19). When the AGV system takes out waste liquid from the total residual liquid tank system, the total residual liquid tank discharge port (19) is connected to the large residual liquid tank liquid receiving port (20). The total residual liquid tank discharge port (19) is configured as a pipe structure with a tapered end, and the diameter of the total residual liquid tank discharge port (19) is smaller than the diameter of the large residual liquid tank liquid receiving port (20).

7. The operating method of the automatic liquid discharge and transfer system according to claim 1, characterized in that: The flow detection system includes a liquid flow meter slave PLC (9), the total residual liquid tank system includes a total residual liquid tank slave PLC (13), the AGV system includes a large residual liquid tank slave PLC (28), and the liquid flow meter slave PLC (9), the total residual liquid tank slave PLC (13) and the large residual liquid tank slave PLC (28) are all connected to the WMS system (30); The liquid discharge solenoid valve (5) is connected to the liquid flow meter slave PLC (9).

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