Container flushing device and flushing method

Abstract

The invention discloses a flushing device and method for a container. The flushing device comprises a flushing mechanism, a liquid storage system, a cleaning liquid circulation system and a pressurization system. The flushing mechanism is used for extending into the container and flushing the container; the liquid outlet end of the liquid storage system is connected with the flushing mechanism; the cleaning liquid circulation system forms a circulation loop between the liquid outlet end of the container and the liquid storage system; the pressurization system comprises an air source and a pressure sensor, the air source can be communicated with the container through a first pipeline, and the pressure sensor can be connected with the container and used for monitoring air pressure in the container; according to the flushing device, through the cleaning liquid circulating system, the cleaning liquid can circulate between the liquid storage system and the container, the utilization rate of the cleaning liquid is increased, and waste of the cleaning liquid is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of container cleaning equipment, and in particular to a container flushing device and a container flushing method. Background Art

[0002] During transportation, containers are loaded with various liquid goods. After unloading, some of the goods may remain inside the container. If the container is not cleaned in time, the residue may contaminate the next batch of goods or even cause corrosion inside the container, affecting the service life and safety of the container.

[0003] Currently, sealed or semi-sealed containers (such as tanks in tank trucks) are typically cleaned using high-pressure water jets, which utilize the powerful impact of the water jet to directly break and scale the glass. However, this cleaning method does not allow the rinse water to be collected and recycled, resulting in significant waste.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a container flushing device and flushing method, aiming to reduce the consumption of cleaning fluid.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions: On the one hand, the present application discloses a flushing device for a container, which includes a flushing mechanism, a liquid storage system, a cleaning liquid circulation system and a boosting system; the flushing mechanism is used to extend into the container to flush the container; the liquid outlet end of the liquid storage system is connected to the flushing mechanism; the cleaning liquid circulation system forms a circulation loop between the liquid outlet end of the container and the liquid storage system; the boosting system includes an air source and a pressure sensor, the air source can be connected to the container through a first pipe, and the pressure sensor can be connected to the container and is used to monitor the air pressure in the container.

[0007] In some embodiments of the present application, the liquid storage system includes a liquid storage tank and a first valve body; the liquid outlet end of the liquid storage tank is connected to the flushing mechanism through a second pipe; the first valve body is arranged in the second pipe and is located between the liquid storage tank and the flushing mechanism.

[0008] In some embodiments of the present application, the liquid storage system includes a first pump body; the first pump body is arranged in the second pipeline and is located between the liquid storage tank and the first valve body, and the first pump body is used to output the cleaning fluid in the liquid storage tank to the flushing mechanism.

[0009] In some embodiments of the present application, the liquid storage system includes a second valve body; the second valve body is provided in the second pipeline and is located between the liquid outlet end of the liquid storage tank and the first pump body; The cleaning liquid circulation system includes a first circulation pipe and a second circulation pipe; the first circulation pipe is respectively connected to the liquid outlet end of the container and the liquid inlet end of the liquid storage tank, and a third valve body is provided on the first circulation pipe; the second circulation pipe is respectively connected to the second pipe and the liquid inlet end of the liquid storage tank, and the connection between the second circulation pipe and the second pipe is located between the first valve body and the second valve body, and a fourth valve body is provided on the second circulation pipe.

[0010] In some embodiments of the present application, the cleaning liquid circulation system includes a flow meter, and the flow meter is connected to the first circulation pipe.

[0011] In some embodiments of the present application, the flushing device includes a waste discharge system, which includes a third pipe, a waste liquid storage device and a fifth valve body. The waste liquid storage device is connected to the liquid outlet end of the liquid storage system through the third pipe, and the fifth valve body is arranged in the third pipe.

[0012] In some embodiments of the present application, the flushing device includes a heat exchange system, which is used to heat the cleaning liquid. The liquid outlet of the heat exchange system is connected to the liquid inlet of the liquid storage system.

[0013] In some embodiments of the present application, the heat exchange system includes a heat exchanger, a second pump body, a fourth pipeline and a sixth valve body. The heat exchanger is used to heat the cleaning fluid. The liquid outlet end of the heat exchanger is connected to the liquid inlet end of the liquid storage system through a fourth pipeline. The second pump body and the sixth valve body are respectively arranged in the fourth pipeline. The second pump body is used to output the cleaning fluid in the heat exchanger to the liquid storage system.

[0014] In some embodiments of the present application, the flushing device includes a controller, which is electrically connected to the flushing mechanism, the liquid storage system, the cleaning liquid circulation system, the boosting system, and the heat exchange system respectively.

[0015] On the other hand, the present application further discloses a method for flushing a container, wherein the flushing method uses the flushing device as described in any one of the above items, and the flushing method comprises the following steps: Opening the flushing mechanism, adding compressed air into the container through the pressurization system, and stopping adding compressed air into the container when the pressure reaches a set value; connecting the circulation loops between the liquid storage system and the flushing mechanism, and between the container and the liquid storage system, respectively, and flushing the container through the flushing mechanism; After flushing is completed, the passage between the liquid storage system and the flushing mechanism is closed, so that the cleaning liquid in the container flows back to the liquid storage system; The air pressure in the container is released to a safe value, and the circulation loop between the container and the liquid storage system is closed.

[0016] In some embodiments of the present application, if the flushing device includes a heat exchange system, and the liquid outlet of the heat exchange system is connected to the liquid inlet of the liquid storage system, then the step of adding compressed air to the container through the pressurizing system, when the pressure reaches a set value, before stopping the addition of compressed air to the container, further includes: The cleaning liquid is heated to a certain temperature, the heated cleaning liquid is added to the liquid storage system, and the passage between the heat exchange system and the liquid storage system is closed.

[0017] In some embodiments of the present application, if the flushing device includes a waste discharge system, and the waste discharge system is connected to the liquid outlet of the liquid storage system; then, after releasing the air pressure in the container to a safe value and closing the circulation loop between the container and the liquid storage system, it also includes connecting the waste discharge system and the liquid storage system to discharge the waste liquid in the liquid storage system.

[0018] Beneficial effects: The flushing device provided in the present application forms a circulation loop between the liquid outlet end of the container and the liquid storage system by setting up a cleaning liquid circulation system, so that the flushing liquid after flushing the container can flow back to the liquid storage system and be reused, thereby improving the utilization rate of the cleaning liquid; in addition, by setting up a boosting system connected to the container and pressurizing the container, the cleaning liquid in the container is easier to discharge and flow back to the liquid storage system, thereby avoiding residual cleaning liquid in the container.

[0019] The flushing method provided in the present application improves the utilization rate of the cleaning liquid by circulating the cleaning liquid in the liquid storage system, the container and the cleaning liquid circulation system. Compressed air is added to the container through the booster system to facilitate the rapid discharge of the cleaning liquid after flushing the container, thereby improving the flushing efficiency and avoiding residual cleaning liquid in the container. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the connection structure of a flushing device for a container provided in one embodiment of the present application.

[0021] Description of main component symbols: 1. Flushing mechanism; 2. Liquid storage system; 21. Liquid storage tank; 22. Second pipeline; 23. First valve body; 24. First pump body; 25. Second valve body; 3. Cleaning liquid circulation system; 31. First circulation pipe; 32. Third valve body; 33. Second circulation pipe; 34. Fourth valve body; 35. Flow meter; 4. Pressurization system; 41. Air source; 42. Pressure sensor; 43. First pipeline; 44. First manual valve; 45. First solenoid valve; 5. Waste discharge system; 51. Third pipeline; 52. Waste liquid storage; 53. Fifth valve body; 6. Heat exchange system; 61. Heat exchanger; 62. Second pump body; 63. Fourth pipeline; 64. Sixth valve body; 100. Container. DETAILED DESCRIPTION

[0022] This application provides a container flushing device and flushing method. To make the purpose, technical solution, and effects of this application more clear and explicit, this application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only intended to explain this application and are not intended to limit this application.

[0023] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They 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, and a specific orientation structure and operation. Therefore, they cannot be understood as limitations on this application. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "multiple" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0025] See also Figure 1The present application provides a container flushing device that can effectively collect and recycle cleaning fluid, thereby reducing the amount of cleaning fluid used. The cleaning fluid can be water. While providing a satisfactory flushing effect, water as a cleaning fluid can avoid secondary contamination of the container.

[0026] It is worth noting that the container 100 has a sealed structure that can accommodate changes in air pressure during the cleaning process. Large containers 100, such as the tank body of a tank truck, are relatively large and have a sealed structure. Conventional high-pressure water jet cleaning methods cannot recycle the cleaning water, requiring a large amount of cleaning water and resulting in significant resource waste. Using the flushing device provided in the application to clean the tank body allows for the recycling of cleaning water, reducing resource waste.

[0027] Specifically, the flushing device includes a flushing mechanism 1, a liquid storage system 2, a cleaning liquid circulation system 3 and a boosting system 4. The flushing mechanism 1 can be arranged in the container 100, or the flushing mechanism 1 can be partially extended into the container 100 to flush the container 100. The liquid outlet end of the liquid storage system 2 is connected to the flushing mechanism 1 to output the cleaning liquid in the liquid storage system 2 to the flushing mechanism 1. The cleaning liquid circulation system 3 forms a circulation loop between the liquid outlet end of the container 100 and the liquid storage system 2, so that the cleaning liquid can circulate between the container 100 and the liquid storage system 2. The boosting system 4 includes an air source 41 and a pressure sensor 42. The air source 41 can be connected to the container 100 through a first pipe 43. The pressure sensor 42 can be connected to the container 100 and is used to monitor the air pressure in the container 100.

[0028] In the above description, the cleaning liquid circulation system 3 forms a circulation loop between the liquid outlet of the container 100 and the liquid storage system 2. After rinsing the container 100, the cleaning liquid can flow back into the liquid storage system 2 through the cleaning liquid circulation system 3 for recycling, thereby improving the utilization rate of the cleaning liquid and reducing cleaning liquid waste. The boosting system 4 inputs compressed gas into the container 100, raising the air pressure within the container 100 to a set value, providing power for the discharge of the cleaning liquid from the container 100. The pressure sensor 42 can monitor the air pressure within the container 100 in real time to ensure the safe operation of the device.

[0029] In some embodiments, the pressure sensor 42 may be disposed on the first pipe 43. The first pipe 43 is in communication with the container 100, so that the pressure in the container can be detected by the pressure sensor 42.

[0030] In other embodiments, the pressure sensor 42 may be disposed within the container 100. For example, the pressure sensor 42 may be disposed on a manhole cover of a tank. The pressure sensor 42 disposed within the container 100 may more intuitively reflect the air pressure within the container 100.

[0031] In order to realize the automatic control of the flushing device and the control accuracy, the flushing device further comprises a controller (not shown in the figure). The controller can include a PLC controller and a touch screen. Different flushing pressures can be set through the touch screen to meet different flushing effects. The controller is electrically connected with the flushing mechanism 1, the liquid storage system 2, the cleaning liquid circulation system 3 and the pressurizing system 4 respectively.

[0032] The PLC controller has powerful data processing capability and flexible programming function, which can meet the control requirements of the flushing device. The PLC controller can set a certain flushing program, and through the preset program, the PLC controller can accurately control the opening and closing of the gas source 41, as well as the running time of the liquid storage system 2 and the cleaning liquid circulation system 3, to realize the automatic control of the flushing process. At the same time, the PLC controller can also receive the real-time monitoring data of the pressure sensor 42, and timely adjust the output pressure of the gas source 41 according to the change of the gas pressure in the container 100, to ensure that the gas pressure in the container 100 always maintains within the set value range, thereby improving the running stability and safety of the flushing device.

[0033] In some embodiments, the gas source 41 can be set as a compressed air storage tank, which is connected with the air inlet of the container 100 through the first pipeline 43. The first pipeline 43 can enter the container 100 from the position of the cleaning hole or manhole of the container 100, which can reduce the opening of the container 100 and facilitate the layout of the pipeline.

[0034] The compressed air storage tank can be connected with a gas conveying pipeline, which can be connected with an air compression device, so that compressed air can be supplemented into the compressed air storage tank in time.

[0035] In other embodiments, the gas source 41 can also use other inert gases, including but not limited to nitrogen.

[0036] The first pipeline 43 can be provided with a first manual valve 44 and a first electromagnetic valve 45. The first manual valve 44 is set as a normally open state, which can be manually closed when the gas source 41 fails, to ensure the running safety of the flushing device. The first electromagnetic valve 45 is electrically connected with the controller, and the opening degree of the first electromagnetic valve 45 is controlled by the controller to adjust the flow of compressed air in the first pipeline 43, with high control accuracy.

[0037] The flushing mechanism 1 can be provided with a plurality of nozzles. The plurality of nozzles can be set as non-passing jet angles to more comprehensively flush the inside of the container 100. In order to further improve the flushing effect, the nozzles can use pressurized nozzles, which have stronger flushing capacity and improve the flushing efficiency.

[0038] In some embodiments, the liquid storage system 2 includes a liquid tank 21 and a first valve body 23. The liquid outlet of the liquid tank 21 is connected to the flushing mechanism 1 via a second pipe 22. To ensure the safe operation of the flushing device, the liquid tank 21 is configured as a non-enclosed container to facilitate pressure relief from the flushing device and avoid safety hazards caused by excessive pressure in the liquid tank 21. The first valve body 23 is disposed in the second pipe 22, located between the liquid tank 21 and the flushing mechanism 1, and is used to control the opening and closing of the second pipe 22, thereby controlling the flow of the cleaning fluid.

[0039] The liquid storage system 2 further includes a first pump body 24, which is disposed within the second conduit 22 and between the liquid storage tank 21 and the first valve body 23. The first pump body 24 is configured to deliver cleaning fluid from the liquid storage tank 21 to the flushing mechanism 1. The first pump body 24 can be a quantitative liquid-feeding pump, which can precisely control the amount of cleaning fluid added, allowing for quantitative addition of cleaning fluid to ensure a thorough cleaning of the container 100.

[0040] The cleaning liquid circulation system 3 includes a first circulation conduit 31, which is connected to the liquid outlet of the container 100 and the liquid inlet of the liquid storage tank 21, respectively, and is used to return the cleaning liquid in the container 100 to the liquid storage tank 21. A third valve body 32 is provided on the first circulation conduit 31 to control the opening and closing of the first circulation conduit 31. The third valve body 32 can be a solenoid valve electrically connected to a controller. The controller controls the solenoid valve to circulate the cleaning liquid between the container 100 and the liquid storage tank 21.

[0041] The first circulation conduit 31 can be connected to the discharge port of the container 100, reducing the number of openings in the container 100 and ensuring the sealing performance of the container 100. A pipe joint is provided at the end of the first circulation conduit 31, and a flange is provided at the discharge port of the container 100. The pipe joint and the flange are connected by a quick connector, facilitating the assembly and disassembly of the first circulation conduit 31 and the container 2.

[0042] The liquid storage system 2 also includes a second valve body 25, which is provided in the second pipe 22 and is located between the liquid outlet end of the liquid storage tank 21 and the first pump body 24. The cleaning liquid circulation system 3 includes a second circulation pipe 33, which is respectively connected to the second pipe 22 and the liquid inlet end of the liquid storage tank 21, and the connection between the second circulation pipe 33 and the second pipe 22 is located between the first valve body 23 and the second valve body 25. When the flushing device has just finished the flushing procedure, the air pressure in the container 100 and the second pipe 22 is relatively high. After the first valve body 23 is closed, the excessive air pressure can easily cause the second pipe 22 to rupture, posing a safety hazard. At this time, the second circulation pipe 33 is connected, and the air pressure in the second pipe 22 can be released to the liquid storage tank 21 through the second circulation pipe 33, and then emptied, thereby ensuring the safety of the system operation.

[0043] The cleaning liquid circulating system 3 further comprises a fourth valve 34. The fourth valve 34 is arranged on the second circulating pipeline 33 and is used to control the opening and closing of the second circulating pipeline 33. When the air pressure in the second pipeline 22 does not need to be adjusted, the second circulating pipeline 33 can be closed by the fourth valve 34 to form a closed circuit, so that the cleaning liquid can only enter the flushing mechanism 1 through the second pipeline 22 to ensure the supply of cleaning liquid in the flushing mechanism 1. The fourth valve 34 can be an electromagnetic valve, which is electrically connected to the controller and is controlled by the controller to improve the automation and control accuracy of the flushing program.

[0044] The second valve 25 is arranged near the liquid outlet of the liquid storage tank 21, and the first valve 23 is arranged near the container 100, so that the air pressure in the second pipeline 22 can be reduced as much as possible.

[0045] The cleaning liquid circulating system 3 further comprises a flow meter 35. The flow meter 35 is connected to the first circulating pipeline 31 and is used to monitor the flow of cleaning liquid in the first circulating pipeline 31. The flow meter 35 is electrically connected to the controller, and the flow data of the flow meter 35 can be obtained by the controller to determine whether the cleaning liquid in the container 100 has been completely drained to avoid liquid accumulation in the container 100. In addition, when the flow data obtained by the flow meter 35 is zero after the flushing program is completed, the pressure in the container 100 can be released. That is, according to the flow data obtained by the flow meter 35, the timing of releasing the pressure in the container 100 can be grasped to improve the efficiency and reliability of the flushing device. In order to more accurately reflect whether the container 100 is completely drained, the flow meter 35 is arranged near the liquid outlet of the container 100.

[0046] The flushing device further comprises a waste liquid discharge system 5. The waste liquid discharge system 5 comprises a third pipeline 51, a waste liquid storage tank 52 and a fifth valve 53. The waste liquid storage tank 52 is connected to the liquid outlet of the liquid storage system 2 through the third pipeline 51, and the fifth valve 53 is arranged on the third pipeline 51 and is used to control the opening and closing of the third pipeline 51. In order to ensure the cleaning effect of the container 100, the cleaning liquid in the liquid storage tank 21 needs to be replaced regularly or according to the cleaning condition. When the cleaning liquid is replaced, the cleaning liquid in the liquid storage tank 21 can be discharged into the waste liquid storage tank 52 through the third pipeline 51 for centralized treatment. The third pipeline 51 is connected to the second pipeline 22 between the first valve 23 and the second valve 25, and when the cleaning liquid does not need to be replaced, the fifth valve 53 is in a closed state, so that the cleaning liquid can only flow to the flushing mechanism 1. When the liquid storage tank 21 needs to be replaced, the first valve 23 is closed to prevent the cleaning liquid from entering the container 100. The second valve 25 and the fifth valve 53 are opened, and the waste liquid in the liquid storage tank 21 is discharged into the waste liquid storage tank 52 through the second pipeline 22 and the third pipeline 51.

[0047] The fifth valve 53 can be an electromagnetic valve and is electrically connected to the controller to realize the automation of the waste liquid discharge of the flushing device.

[0048] To further enhance the flushing effect of the flushing device, the flushing device also includes a heat exchange system 6. Heat exchange system 6 is electrically connected to the controller and is located upstream of the liquid storage system 2. The liquid storage end of heat exchange system 6 is connected to the liquid inlet end of the liquid storage system 2, and is used to heat the cleaning liquid and deliver the heated cleaning liquid to the liquid storage tank 21. Container 100 is generally used to hold liquid. Raising the temperature of the cleaning liquid can enhance its cleaning ability, thereby improving the cleaning effect of container 100.

[0049] Furthermore, the heat exchange system 6 includes a heat exchanger 61, a second pump body 2, a fourth pipe 63 and a sixth valve body 64. The heat exchanger 61 is used to heat the cleaning liquid. The liquid outlet of the heat exchanger 61 is connected to the liquid inlet of the liquid storage system 2 through the fourth pipe 63. The second pump body 2 and the sixth valve body 64 are respectively arranged on the fourth pipe 63. The second pump body 2 is used to output the cleaning liquid in the heat exchanger 61 to the liquid storage system 2. The cleaning liquid is heated by the heat exchanger 61, thereby improving the cleaning ability of the cleaning liquid. A temperature controller is provided in the heat exchanger 61, and the heating temperature of the cleaning liquid is controlled by the temperature controller so that the cleaning liquid can be stably heated to a set temperature value, thereby ensuring the stability of the cleaning effect of the cleaning liquid. The second pump body 2 can adopt a quantitative liquid adding pump to stably deliver the cleaning liquid to the liquid storage tank 21.

[0050] It can be understood that a liquid level sensor is set in the liquid storage tank 21, and the data of the liquid level sensor is collected by the controller. When the cleaning liquid is added to the set liquid level, the sixth valve body 64 is closed and the cleaning liquid is stopped from being transported to the liquid storage tank 21 to avoid the cleaning liquid overflowing from the liquid storage tank 21 and causing waste.

[0051] To facilitate the delivery of cleaning fluid to tank 21, fourth conduit 63 communicates with the upper portion of tank 21. Generally, the cleaning fluid level in tank 21 is no higher than the connection between fourth conduit 63 and tank 21. That is, when tank 21 is fully filled with cleaning fluid, it contains both gas and liquid spaces, ensuring sufficient pressure-stabilizing space at the top of tank 21, allowing the system to release excess pressure.

[0052] Through the system pressure fed back by the pressure sensor 42, the controller can adjust the opening of each electronic valve body of the flushing device to ensure the safe operation of the pipeline.

[0053] The other party of the present application also provides a flushing method for a container 100. The flushing method is implemented by using the flushing device described above. Before performing the flushing procedure, the flushing mechanism 1 is first installed in the container 100 to be flushed, and then the flushing procedure is performed. The flushing method includes the following steps: Step S001 , heating the cleaning liquid to a certain temperature, adding the heated cleaning liquid to the liquid storage system 2 , and closing the passage between the heat exchange system 6 and the liquid storage system 2 .

[0054] Specifically, the heat exchanger 61 is activated to heat the cleaning liquid to a set temperature, such as 40°C, 45°C, or 50°C. Generally, the heating temperature of the cleaning liquid can be set based on the actual application, that is, the difficulty of cleaning the contents of the container 100. After the cleaning liquid is heated to the set temperature, the sixth valve body 64 and the second pump body 2 are opened to deliver the cleaning liquid to the liquid storage tank 21. When the cleaning liquid in the liquid storage tank 21 reaches the set liquid level, the second pump body 2 and the sixth valve body 64 are closed to stop the delivery of the cleaning liquid.

[0055] It is understandable that during the flushing process of the container 100 , the second pump body 2 and the sixth valve body 64 can be opened in time according to the volume of the remaining cleaning liquid in the liquid storage tank 21 to replenish the cleaning liquid into the liquid storage tank 21 .

[0056] Step S002: Turn on the flushing mechanism 1 and add compressed air into the container 100 through the boosting system 4. When the pressure reaches a set value, stop adding compressed air into the container 100.

[0057] Specifically, after the flushing mechanism 1 is turned on, the first solenoid valve 45 on the first pipe 43 is opened, so that the compressed air in the compressed air storage tank can be transported to the container 100 through the first pipe 43. The pressure sensor 42 on the first pipe 43 monitors the air pressure value of the first pipe 43. Since the container 100 is connected to the first pipe 43, it can be understood as the pressure value in the container 100. When the air pressure in the container 100 rises to a certain value, the first solenoid valve 45 is closed.

[0058] Step S003 , connecting the circulation loops between the liquid storage system 2 and the flushing mechanism 1 , and between the container 100 and the liquid storage system 2 , and flushing the container 100 through the flushing mechanism 1 .

[0059] Specifically, the first valve body 23, the second valve body 25, and the first pump body 24 on the second pipe 22 connecting the liquid storage system 2 and the flushing mechanism 1 are opened, allowing the cleaning liquid in the liquid storage tank 21 to pass through the action of the first pump body 24 and enter the flushing mechanism 1 along the second pipe 22. The flushing mechanism 1 sprays the cleaning liquid into the container 100 to clean the container 100. At the same time, the third valve body 32 on the first circulation pipe 31 is opened, allowing the cleaning liquid after cleaning the container 100 to return to the liquid storage tank 21 through the first circulation pipe 31 for recycling.

[0060] It is worth noting that during the flushing process of the container 100, the container 100 includes a gas space and a liquid space, that is, the cleaning liquid will not fill the container 100, ensuring that the container 100 has sufficient air pressure to provide power for the discharge of the cleaning liquid.

[0061] Step S004 , after the flushing is completed, the passage between the liquid storage system 2 and the flushing mechanism 1 is closed, so that the cleaning liquid in the container 100 flows back to the liquid storage system 2 .

[0062] Specifically, after the flushing process is completed, the first pump body 24, the first valve body 23, and the second valve body 25 are closed, so that no more cleaning liquid enters the container 100. At this time, the cleaning liquid in the container 100 can quickly enter the first circulation pipe 31 under the action of high air pressure and circulate to the liquid storage tank 21. The flow rate of the cleaning liquid in the first circulation pipe 31 can be obtained in real time through the flow meter 35 connected to the first circulation pipe 31. When the flow rate obtained by the flow meter 35 is 0, it can be determined that the cleaning liquid in the container 100 has been basically drained.

[0063] To prevent the second pipeline 22 from being damaged due to excessive internal air pressure, before closing the first valve body 23 and the second valve body 25, the fourth valve body 34 on the second circulation pipeline 33 is opened so that the air pressure of the second pipeline 22 can be discharged to the liquid storage tank 21 through the second circulation pipeline 33, thereby maintaining the air pressure in the second pipeline 22 within a safe range.

[0064] Step S005 , releasing the gas and liquid in the container 100 to a safe value, and closing the circulation loop between the container 100 and the liquid storage system 2 .

[0065] After the cleaning liquid in container 100 is drained, the pressure in container 100 can continue to be relieved through first circulation pipe 31 until the pressure in container 100 returns to a safe level. After the pressure in container 100 is relieved, third valve body 32 on first circulation pipe 31 is closed to prevent external air from entering first circulation pipe 31 when the connection between container 100 and first circulation pipe 31 is disconnected.

[0066] In other embodiments, the flushing procedure can be set multiple times. When the flushing procedure is set multiple times, after the first flushing procedure is completed and the cleaning liquid in the container 100 is emptied, the above steps S003 and S004 can be repeated in sequence until all flushing procedures are completed, and then the container 100 is depressurized.

[0067] When the cleaning fluid needs to be replaced, the above method may further include: Step S006 , connecting the waste discharge system 5 with the liquid storage system 2 to discharge the waste liquid in the liquid storage system 2 .

[0068] Specifically, when the liquid storage tank 21 needs to discharge waste liquid, the second valve body 25, the fifth valve body 53 and the first pump body 24 are opened, so that the liquid storage tank 21 is communicated with the waste liquid storage 52 through the second pipeline 22 and the third pipeline 51, and then the waste liquid in the liquid storage tank 21 can be discharged. After the waste liquid is discharged, the first pump body 24, the second valve body 25 and the fifth valve body 53 are closed. When the next round of flushing program is started, the cleaning liquid is added to the liquid storage tank 21 through the heat exchange system 6 again.

[0069] After the waste liquid is discharged, the flushing mechanism 1 in the container 100 can be removed, the flushing mechanism 1 is taken out, and the connection between the container 100 and the first circulating pipeline 31 is disassembled, and the next container 100 to be cleaned is replaced.

[0070] It should be noted that each step of the above flushing method is controlled by the controller, and the automatic operation of the flushing device is realized.

[0071] In summary, the cleaning liquid circulation system is arranged between the liquid outlet of the container and the liquid storage system, so that the cleaning liquid can circulate between the container and the liquid storage tank, the utilization rate of the cleaning liquid is improved, and the waste of the cleaning liquid is reduced.

[0072] The application increases the air pressure in the container by arranging the booster system, provides power for the circulation of the cleaning liquid in the container, facilitates the discharge of the cleaning liquid from the container, avoids the existence of residual cleaning liquid in the container, and improves the cleaning effect of the container. The application sets the second circulating pipeline between the connecting pipeline between the liquid storage tank and the flushing mechanism and the input end of the liquid storage tank to release pressure, and improves the operation safety of the flushing device.

[0073] The application sets the heat exchange system upstream of the liquid storage tank, heats the cleaning liquid through the heat exchange system, improves the cleaning effect of the cleaning liquid on the container, and improves the cleaning efficiency of the flushing device.

[0074] It can be understood that, for those skilled in the art, equivalent replacement or change can be made according to the technical scheme of the application and the application concept, and all these changes or replacements shall belong to the protection scope of the claims attached to the application.

Claims

1. A container flushing device, characterized in that: The flushing device comprises: A flushing mechanism, configured to extend into the container and flush the container; A liquid storage system, wherein a liquid outlet end of the liquid storage system is connected to the flushing mechanism; a cleaning liquid circulation system, forming a circulation loop between the liquid outlet end of the container and the liquid storage system; The pressurization system includes an air source and a pressure sensor. The air source can be connected to the container through a first pipe. The pressure sensor can be connected to the container and is used to monitor the air pressure in the container.

2. The flushing device according to claim 1, characterized in that The liquid storage system comprises: a liquid storage tank, wherein a liquid outlet end of the liquid storage tank is connected to the flushing mechanism via a second pipe; The first valve body is provided in the second pipeline and is located between the liquid storage tank and the flushing mechanism.

3. The flushing device according to claim 2, characterized in that The liquid storage system comprises: The first pump body is provided in the second pipeline and is located between the liquid storage tank and the first valve body. The first pump body is used to output the cleaning liquid in the liquid storage tank to the flushing mechanism.

4. The flushing device according to claim 3, characterized in that The liquid storage system comprises: a second valve body, provided in the second pipeline and located between the liquid outlet end of the liquid storage tank and the first pump body; The cleaning fluid circulation system comprises: a first circulation pipe connected to the liquid outlet of the container and the liquid inlet of the liquid storage tank, respectively; and a third valve body is provided on the first circulation pipe; The second circulation pipeline is connected to the second pipeline and the liquid inlet end of the liquid storage tank respectively. The connection between the second circulation pipeline and the second pipeline is located between the first valve body and the second valve body. The second circulation pipeline is provided with a fourth valve body.

5. The flushing device according to claim 4, characterized in that The cleaning fluid circulation system comprises: A flow meter is connected to the first circulation pipeline.

6. The flushing device according to claim 1, characterized in that The flushing device comprises: The waste discharge system includes a third pipeline, a waste liquid storage and a fifth valve body. The waste liquid storage is connected to the liquid outlet end of the liquid storage system through the third pipeline, and the fifth valve body is arranged on the third pipeline.

7. The flushing device according to any one of claims 1 to 6, characterized in that: The flushing device comprises: The heat exchange system is used to heat the cleaning liquid, and the liquid outlet end of the heat exchange system is connected to the liquid inlet end of the liquid storage system.

8. The flushing device according to claim 7, characterized in that The heat exchange system includes a heat exchanger, a second pump body, a fourth pipeline and a sixth valve body. The heat exchanger is used to heat the cleaning fluid. The liquid outlet end of the heat exchanger is connected to the liquid inlet end of the liquid storage system through a fourth pipeline. The second pump body and the sixth valve body are respectively arranged in the fourth pipeline. The second pump body is used to output the cleaning fluid in the heat exchanger to the liquid storage system.

9. The flushing device according to claim 7, characterized in that: The flushing device comprises: The controller is electrically connected to the flushing mechanism, the liquid storage system, the cleaning liquid circulation system, the pressurizing system and the heat exchange system respectively.

10. A method for flushing a container, characterized in that: Using the flushing device according to any one of claims 1 to 9, the flushing method comprises the following steps: Opening the flushing mechanism, adding compressed air into the container through the pressurization system, and stopping adding compressed air into the container when the pressure reaches a set value; connecting the circulation loops between the liquid storage system and the flushing mechanism, and between the container and the liquid storage system, respectively, and flushing the container through the flushing mechanism; After flushing is completed, the passage between the liquid storage system and the flushing mechanism is closed, so that the cleaning liquid in the container flows back to the liquid storage system; The air pressure in the container is released to a safe value, and the circulation loop between the container and the liquid storage system is closed.

11. The flushing method according to claim 10, characterized in that: If the flushing device includes a heat exchange system, and the liquid outlet of the heat exchange system is connected to the liquid inlet of the liquid storage system, then the method of adding compressed air into the container through the pressurizing system, when the pressure reaches a set value, before stopping adding compressed air to the container, further includes: The cleaning liquid is heated to a certain temperature, the heated cleaning liquid is added to the liquid storage system, and the passage between the heat exchange system and the liquid storage system is closed.

12. The flushing method according to claim 10, characterized in that: If the flushing device includes a waste discharge system, and the waste discharge system is connected to the liquid outlet end of the liquid storage system; then, after releasing the air pressure in the container to a safe value and closing the circulation loop between the container and the liquid storage system, it also includes connecting the waste discharge system and the liquid storage system to discharge the waste liquid in the liquid storage system.

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