A container closed type automatic cleaning system and method

Abstract

The present invention relates to a closed automatic cleaning system for a container, characterized in that: it comprises an isolation valve installed on the cleaning port of a reactor, a cleaning mechanism storage box is installed on the isolation valve, and a cleaning unit is installed on the cleaning mechanism storage box; the cleaning unit comprises a telescopic motor, a lifting rod, an upper limit switch, a lower limit switch, a three-dimensional spray head and a water supply unit for providing high-pressure cleaning liquid; the telescopic motor drives the lifting rod to lift and lower longitudinally, and the output end of the lifting rod passes through the cleaning mechanism storage box and the isolation valve in turn, and then penetrates into the reactor, and the end of the lifting rod is installed with a three-dimensional spray head connected to the water supply unit; the cleaning mechanism storage box is provided with a spray rod sealing guide cavity. The present invention has strong practicality and is easy to promote.

Description

Technical Field

[0001] The invention relates to the technical field of reactor cleaning, and in particular to a closed container automatic cleaning system and a cleaning method thereof. Background Art

[0002] The reactor is a chemical reaction container in chemical production. During the reaction process, the reacted substances will adhere to the inner surface of the container. If these substances are not cleaned on the inner surface of the container, they will affect the next reaction. Therefore, after the reactor is used, the substances attached to the inner wall of the reactor must be cleaned.

[0003] At present, the cleaning of reactors in my country's chemical enterprises is gradually developing towards automation. In the field of automated cleaning of reactors, the mainstream is to clean through a lifting and positioning mechanism. The isolation valve is opened during cleaning and closed during reaction. However, most domestic reactors do not have a closed cleaning function, that is, the container replaces the residual reaction gas before cleaning and recovers the residual gas. This operation ensures that there is no reaction gas in the container before the cleaning mechanism is extended into the container for cleaning. This method increases the replacement time before cleaning and the time for vacuuming before the reaction to ensure that the oxygen content is qualified, which greatly increases the time between reactions in each reactor. For this reason, a closed automatic cleaning equipment was designed to address this situation, and the original automatic mechanism was optimized to improve the system stability, reliability, cleaning life and reduce the reaction preparation time.

[0004] According to the prior art, there are the following technical problems:

[0005] 1. The Chinese utility model (application number 201320001050.2, entitled "Automatic cleaning device for chemical reactor") and the Chinese invention patent (application number 201520034033.8, entitled "Automatic cleaning reactor") both proposed solutions for automatic cleaning of reactors. However, the automatic cleaning mechanisms of the above solutions cannot achieve closed cleaning of reactors. Reactors that need to be deoxygenated before reaction still need to be deoxygenated. Summary of the invention

[0006] In view of the deficiencies in the prior art, an object of the present invention is to provide a closed automatic cleaning system for a container and a cleaning method thereof.

[0007] The technical solution of the present invention is implemented as follows: a container closed automatic cleaning system, characterized in that: it includes an isolation valve installed on the cleaning port of the reactor, a cleaning mechanism storage box is installed on the isolation valve, and a cleaning unit is installed on the cleaning mechanism storage box; the cleaning unit includes a telescopic motor, a lifting rod, an upper limit switch, a lower limit switch, a three-dimensional nozzle and a water supply unit for providing high-pressure cleaning liquid; the telescopic motor drives the lifting rod to lift and lower longitudinally, and the output end of the lifting rod passes through the cleaning mechanism storage box and the isolation valve in turn, and then penetrates into the interior of the reactor, and the end of the lifting rod is installed with a three-dimensional nozzle connected to the water supply unit; the cleaning mechanism storage box is provided with a spray rod sealing guide cavity.

[0008] The beneficial effects of the present invention are:

[0009] By adopting a closed installation of the cleaning mechanism, the telescopic rod moves up and down in the sealed guide cavity, so as to prevent waste gas and waste liquid from escaping to the outside, so as to achieve the effect of closed cleaning, and effectively solve the traditional method of replacing the residual reaction gas in the container before cleaning and recovering the residual gas. By this operation, it is ensured that there is no reaction gas in the container before the cleaning mechanism is extended into the container for cleaning, which increases the replacement time before cleaning and the time for vacuuming before the reaction to ensure that the oxygen content is qualified, and greatly increases the time between reactions of each reactor, so as to achieve the effect of synchronous cleaning and save cleaning time.

[0010] Furthermore, it also includes a spray rod self-cleaning unit for cleaning the spray rod; the spray rod self-cleaning unit includes a self-cleaning nozzle self-cleaning pipe, a self-cleaning water inlet automatic valve, an automatic washing pipe pressure sensor, a front-end valve of the automatic washing pipe pressure sensor and a self-cleaning water inlet manual valve; the input end of the self-cleaning pipe is connected to the water supply unit; the self-cleaning water inlet automatic valve and the self-cleaning water inlet manual valve are both installed on the self-cleaning pipe, and the output end of the self-cleaning pipe is uniformly penetrated into the cleaning mechanism storage box along the circumference of the cleaning mechanism storage box through a plurality of self-cleaning branch pipes; a detection branch pipe is installed on the self-cleaning pipe, and the automatic washing pipe pressure sensor and the front-end valve of the automatic washing pipe pressure sensor are installed on the detection branch pipe.

[0011] The beneficial effects of the present invention are:

[0012] By providing a spray rod self-cleaning unit, the waste liquid attached to the spray rod when cleaning the reactor can be effectively cleaned in a sealed environment to avoid the phenomenon that the spray rod has residual reaction liquid after long-term use, causing related chemical reactions during the next preparation and affecting the reaction purity, thereby improving the cleaning ability and scientificity of the cleaning device.

[0013] Furthermore, a cleaning spray rod piston seal is provided on the sealing guide cavity; the spray rod piston comprises upper and lower sealing rings sleeved on lifting rods at the upper and lower ends of the cleaning mechanism storage box.

[0014] Furthermore, a water seal is also provided on the guide sealing cavity; the water seal is installed around the lifting rod and is provided with a sealing ring water seal water outlet and a sealing water seal water inlet which are connected to the outside.

[0015] Furthermore, a storage replacement unit is provided on the guide sealing cavity; the storage replacement unit comprises a water seal isolation module which realizes container sealing by pressure difference and an exhaust gas replacement module which realizes sealing by absorbing gas with deoxygenated water.

[0016] Furthermore, the water seal isolation module has a water seal water source with metering function, a sealed cavity water inlet pipe, a sealed cavity water inlet pressure sensor, a front-end valve of the sealed cavity water inlet pressure sensor, a sealed cavity water inlet pneumatic valve, a sealed cavity water inlet manual valve, a sealed cavity outlet valve, a storage cavity vent pipe, a storage cavity vent pipe manual valve, a storage cavity water outlet replacement pipe pneumatic valve, a storage cavity vent pipe pressure gauge, a storage cavity vent pipe pressure sensor, a front-end valve of the storage cavity vent pipe pressure gauge, and a sealed cavity outlet drain pipe; the two ends of the sealed cavity water inlet pipe are respectively connected to the water seal and the water seal water source; the sealed cavity water inlet pipe A pressure sensor, a front-end valve of a sealed chamber water inlet pressure sensor, a sealed chamber water inlet pneumatic valve, and a sealed chamber water inlet manual valve are sequentially installed on the sealed chamber water inlet pipe; one section of the sealed chamber outlet discharge pipe is connected to the sealed water seal outlet, and the other end is connected to the storage chamber vent pipe; the storage chamber vent pipe is sequentially installed with the storage chamber vent pipe pressure sensor, the front-end valve of the storage chamber vent pipe pressure gauge, the storage chamber vent pipe pressure gauge, the storage chamber water outlet replacement pipe pneumatic valve, and the storage chamber vent pipe manual valve along the water flow direction; a liquid level switch is also installed at the output end of the storage chamber vent pipe.

[0017] Furthermore, the exhaust gas replacement module includes a storage chamber water inlet pipe, a storage chamber water inlet source, a storage chamber water inlet replacement pneumatic valve, a storage chamber water inlet replacement manual valve and a storage chamber water inlet manual valve in a normally open state; the two ends of the storage chamber water inlet pipe are respectively connected to the storage chamber water inlet source and a cleaning mechanism storage box; the storage chamber water inlet replacement pneumatic valve, the storage chamber water inlet replacement manual valve and the storage chamber water inlet manual valve in a normally open state are all installed on the storage chamber water inlet pipe; the cleaning mechanism storage box is connected to the storage chamber vent pipe through an output pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By providing a piston shaft seal and a water seal, such a setting can prevent the gas inside the reactor from escaping, which would cause the leakage of waste gas or even toxic gas; and after the cleaning structure, the waste gas remaining in the pipeline can be removed, which can further prevent the leakage of waste gas.

[0020] In addition, the present invention also discloses an automatic cleaning method of a closed container automatic cleaning system, which is characterized by comprising the following steps:

[0021] S1: Before starting cleaning, keep the isolation valve closed and control the replacement unit to operate. After the air inside the storage chamber is exhausted, the replacement unit stops working;

[0022] S2: After the replacement unit is finished, the isolation valve is opened, and the three-dimensional nozzle is controlled to rise and fall through the telescopic motor to achieve fixed-point cleaning of the three-dimensional nozzle inside the reactor;

[0023] S3: During the cleaning process, a certain amount of water is input into the spray rod seal guide cavity through the water seal isolation module, so that the shaft seal outlet water pressure is always higher than the storage cavity pressure by 0.03-0.05 MPa, thus achieving water sealing;

[0024] S4: After the reactor is cleaned, the telescopic motor controls the three-dimensional nozzle to reset and close the isolation valve.

[0025] Furthermore, during the cleaning process, the spray boom is lifted and lowered, and a self-cleaning nozzle is installed in the storage chamber to clean the spray boom during extension and retraction, thereby ensuring the cleanliness of the spray boom.

[0026] Furthermore, during the cleaning process, the isolation valve is opened and the gas in the container enters the storage chamber. To ensure that the gas remaining in the storage chamber will not leak after the cleaning is completed, after the cleaning is completed and the isolation valve is closed, deoxygenated water is introduced to empty the gas in the storage chamber.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The cleaning mechanism is installed in a closed manner, and the telescopic rod moves up and down in the sealed guide cavity to prevent waste gas and waste liquid from escaping to the outside, so as to achieve the effect of closed cleaning. It effectively solves the traditional method of replacing the residual reaction gas in the container before cleaning and recovering the residual gas. This operation ensures that there is no reaction gas in the container before the cleaning mechanism is extended into the container for cleaning, which increases the replacement time before cleaning and the vacuuming time before the reaction starts to ensure that the oxygen content is qualified, greatly increasing the time between reactions in each reactor, and achieving the effect of synchronous cleaning and saving cleaning time.

[0029] 2. By performing closed cleaning on the spray rod, it is possible to avoid the residual liquid on the spray rod being brought into the reactor when the reactor is used next time, thereby improving the quality of the finished product.

[0030] 3. By replacing the gas, internal residual gas can be avoided, which may lead to leakage and affect the next preparation, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 It is a schematic diagram of the cleaning unit structure;

[0033] Figure 2 Schematic diagram of the self-cleaning unit structure;

[0034] Figure 3 A schematic diagram of the structure of the storage replacement unit;

[0035] Figure 4 Schematic diagram of the sealing unit structure. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] like Figure 1As shown, the present invention discloses a closed automatic cleaning system for a container. In a specific embodiment of the present invention, it includes an isolation valve installed on the cleaning port of the reactor, a cleaning mechanism storage box 13 is installed on the isolation valve, and a cleaning unit is installed on the cleaning mechanism storage box 13; the cleaning unit includes a telescopic motor 42, a lifting rod 400, an upper limit switch 43, a lower limit switch 44, a three-dimensional spray head 39 and a water supply unit for providing high-pressure cleaning liquid; the telescopic motor 42 drives the lifting rod 400 to lift and lower longitudinally, and the output end of the lifting rod 400 passes through the cleaning mechanism storage box 13 and the isolation valve in turn, and then penetrates into the interior of the reactor, and the end of the lifting rod 400 is installed with a three-dimensional spray head 39 connected to the water supply unit; the cleaning mechanism storage box 13 is provided with a spray rod sealing guide cavity 12.

[0039] The bottom of the reactor is provided with an automatic waste liquid cut-off valve 40 to realize automatic opening and closing of the waste liquid.

[0040] The beneficial effects of the present invention are:

[0041] By adopting a closed installation of the cleaning mechanism, the telescopic rod moves up and down in the sealed guide cavity, so as to prevent waste gas and waste liquid from escaping to the outside, so as to achieve the effect of closed cleaning, and effectively solve the traditional method of replacing the residual reaction gas in the container before cleaning and recovering the residual gas. By this operation, it is ensured that there is no reaction gas in the container before the cleaning mechanism is extended into the container for cleaning, which increases the replacement time before cleaning and the time for vacuuming before the reaction to ensure that the oxygen content is qualified, and greatly increases the time between reactions of each reactor, so as to achieve the effect of synchronous cleaning and save cleaning time.

[0042] It should be noted that: during use, the cleaning mechanism is controlled by a motor to telescope and position; the upper limit switch and the lower limit switch control the extreme positions of the two ends of the telescopic mechanism;

[0043] In addition, the three-dimensional nozzle is installed at the cleaning mechanism and moves up and down accordingly; the water inlet pipe of the three-dimensional nozzle is connected to a high-pressure hose, which is connected to the water supply unit through the high-pressure hose with a telescopic function. The water source in the water supply unit is pressurized by a high-pressure pump and then transported to the cleaning mechanism through the high-pressure hose to achieve cleaning of the material;

[0044] Furthermore, the three-dimensional nozzle is lifted and lowered by a telescopic rod, and the telescopic rod realizes a piston sealing function by guiding the sealing cavity.

[0045] Embodiment 2 is different from Embodiment 1 in that

[0046] like Figure 2As shown, in a specific embodiment of the present invention, a spray rod self-cleaning unit for cleaning the spray rod is also included; the spray rod self-cleaning unit includes a self-cleaning nozzle self-cleaning pipe 31, a self-cleaning water inlet automatic valve 32, an automatic washing pipe pressure sensor 33, a front-end valve 34 of the automatic washing pipe pressure sensor and a self-cleaning water inlet manual valve 35; the input end of the self-cleaning pipe 31 is connected to the water supply unit; the self-cleaning water inlet automatic valve 32 and the self-cleaning water inlet manual valve 35 are both installed on the self-cleaning pipe 31, and the output end of the self-cleaning pipe 31 is uniformly penetrated into the cleaning mechanism storage box 13 along the circumference of the cleaning mechanism storage box 13 through a plurality of self-cleaning branch pipes; a detection branch pipe is installed on the self-cleaning pipe 31, and the automatic washing pipe pressure sensor 33 and the front-end valve 34 of the automatic washing pipe pressure sensor are installed on the detection branch pipe.

[0047] The beneficial effects of the present invention are:

[0048] By providing a spray rod self-cleaning unit, the waste liquid attached to the spray rod when cleaning the reactor can be effectively cleaned in a sealed environment to avoid the phenomenon that the spray rod has residual reaction liquid after long-term use, causing related chemical reactions during the next preparation and affecting the reaction purity, thereby improving the cleaning ability and scientificity of the cleaning device.

[0049] It should be noted that during the lifting and lowering process of the spray boom, the self-cleaning water inlet manual valve is kept open to manually cut off the circuit, the self-cleaning water inlet automatic valve is opened, the valve at the front end of the automatic washing pipe pressure sensor is opened, the self-cleaning pipe pressure is detected by the automatic washing pipe pressure sensor, the cleaning water pressure is controlled, and a self-cleaning nozzle is installed in the storage chamber to clean the spray boom in extension and extension, thereby realizing automatic cleaning of the spray boom.

[0050] Embodiment 3 is different from Embodiment 1 or 2 in that

[0051] like Figure 3-4 As shown, in a specific embodiment of the present invention, a cleaning spray rod piston seal is provided on the sealing guide cavity; the spray rod piston comprises upper and lower sealing rings sleeved on the lifting rods at the upper and lower ends of the cleaning mechanism storage box.

[0052] In a specific embodiment of the present invention, a water seal is further provided on the guide sealing cavity; the water seal is installed around the lifting rod and is provided with a sealing ring water seal outlet and a sealing water seal inlet communicated with the outside.

[0053] In a specific embodiment of the present invention, a storage replacement unit is provided on the guide sealing cavity; the storage replacement unit comprises a water seal isolation module for sealing the container by pressure difference and an exhaust gas replacement module for sealing by absorbing gas with deoxygenated water.

[0054] In a specific embodiment of the present invention, the water seal isolation module has a water seal water source 25 with metering function, a sealed cavity water inlet pipe 20, a sealed cavity water inlet pressure sensor 14, a sealed cavity water inlet pressure sensor front end valve 15, a sealed cavity water inlet pneumatic valve 18, a sealed cavity water inlet manual valve 19, a sealed cavity outlet valve 10, a storage cavity vent pipe 9, a storage cavity vent pipe manual valve 2, a storage cavity water outlet replacement pipe pneumatic valve 3, a storage cavity vent pipe pressure gauge 5, a storage cavity vent pipe pressure sensor 6, a storage cavity vent pipe pressure gauge front end valve 7, and a sealed cavity outlet drain pipe 8; the two ends of the sealed cavity water inlet pipe 20 are respectively connected to the water seal and the water seal water source 25; The sealed chamber water inlet pressure sensor 14, the sealed chamber water inlet pressure sensor front end valve 15, the sealed chamber water inlet pneumatic valve 18, and the sealed chamber water inlet manual valve 19 are sequentially installed on the sealed chamber water inlet pipe 20; one section of the sealed chamber outlet drain pipe 8 is connected to the sealed water seal outlet, and the other end is connected to the storage chamber vent pipe 9; the storage chamber vent pipe 9 is sequentially installed with the storage chamber vent pipe pressure sensor 6, the storage chamber vent pipe pressure gauge front end valve 7, the storage chamber vent pipe pressure gauge 5, the storage chamber water outlet replacement pipe pneumatic valve 3 and the storage chamber vent pipe manual valve 2 along the water flow direction; the output end of the storage chamber vent pipe 9 is also installed with a liquid level switch 1.

[0055] In a specific embodiment of the present invention, the exhaust gas replacement module includes a storage chamber water inlet pipe 21, a storage chamber water inlet source 23, a storage chamber water inlet replacement pneumatic valve 16, a storage chamber water inlet replacement manual valve 17 and a storage chamber water inlet manual valve 22 in a normally open state; the two ends of the storage chamber water inlet pipe 21 are respectively connected to the storage chamber water inlet source 23 and a cleaning mechanism storage box; the storage chamber water inlet replacement pneumatic valve 16, the storage chamber water inlet replacement manual valve 17 and the storage chamber water inlet manual valve 22 in a normally open state are all installed on the storage chamber water inlet pipe 21; the cleaning mechanism storage box is connected to the storage chamber vent pipe 9 through an output pipe.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] By providing a piston shaft seal and a water seal, such a setting can prevent the gas inside the reactor from escaping, which would cause the leakage of waste gas or even toxic gas; and after the cleaning structure, the waste gas remaining in the pipeline can be removed, which can further prevent the leakage of waste gas.

[0058] It should be noted that: the storage chamber pressure is detected by the storage chamber pipeline pressure sensor, the water seal pressure is detected by the guide sealing chamber water inlet pressure sensor, the pressure sensors on both sides are compared, and the metering pump is controlled by the PLC control system to supply a predetermined amount of water to the kettle, so that the shaft seal outlet water pressure is always 0.03-0.05 MPa higher than the storage chamber pressure to ensure the reliability of the water seal. The sealing chamber outlet valve 10 is kept normally closed, the front end valve 15 of the sealing chamber water inlet pressure sensor, the sealing chamber water inlet manual valve 19 are kept open, and the sealing chamber water inlet pneumatic valve 18 and the sealing chamber water inlet metering pump 24 are kept open in the telescopic state.

[0059] In addition, during the cleaning phase, the isolation valve is opened, and the gas in the container enters the storage chamber. To ensure that the gas remaining in the storage chamber will not leak after the cleaning is completed, after the cleaning is completed and the isolation valve is closed, deoxygenated water is introduced to empty the gas in the storage chamber. The operation is as follows: open the storage chamber water inlet replacement pneumatic valve 16, the storage chamber water outlet replacement pipe pneumatic valve 3, the storage chamber vent pipe manual valve 2, the storage chamber vent pipe pressure gauge front end valve 7, and the storage chamber water inlet replacement manual valve 17 are normally open valves. After a certain period of time, check whether the liquid level switch 1 has a liquid level. After a signal is received, close the storage chamber water inlet replacement pneumatic valve 16 and the storage chamber water outlet replacement pipe pneumatic valve 3, and the replacement is completed at this time.

[0060] Example 4

[0061] In addition, the present invention also discloses an automatic cleaning method of a closed container automatic cleaning system, which is characterized by comprising the following steps:

[0062] S1: Before starting cleaning, keep the isolation valve closed and control the replacement unit to operate. After the air inside the storage chamber is exhausted, the replacement unit stops working;

[0063] S2: After the replacement unit is finished, the isolation valve is opened, and the three-dimensional nozzle is controlled to rise and fall through the telescopic motor to achieve fixed-point cleaning of the three-dimensional nozzle inside the reactor;

[0064] S3: During the cleaning process, a certain amount of water is input into the spray rod seal guide cavity through the water seal isolation module, so that the shaft seal outlet water pressure is always higher than the storage cavity pressure by 0.03-0.05 MPa, thus achieving water sealing;

[0065] S4: After the reactor is cleaned, the telescopic motor controls the three-dimensional nozzle to reset and close the isolation valve.

[0066] Furthermore, during the cleaning process, the spray boom is lifted and lowered, and a self-cleaning nozzle is installed in the storage chamber to clean the spray boom during extension and retraction, thereby ensuring the cleanliness of the spray boom.

[0067] Furthermore, during the cleaning process, the isolation valve is opened and the gas in the container enters the storage chamber. To ensure that the gas remaining in the storage chamber will not leak after the cleaning is completed, after the cleaning is completed and the isolation valve is closed, deoxygenated water is introduced to empty the gas in the storage chamber.

[0068] Compared with the prior art, the present invention has the following beneficial effects:

[0069] 1. The cleaning mechanism is installed in a closed manner, and the telescopic rod moves up and down in the sealed guide cavity to prevent waste gas and waste liquid from escaping to the outside, so as to achieve the effect of closed cleaning. It effectively solves the traditional method of replacing the residual reaction gas in the container before cleaning and recovering the residual gas. This operation ensures that there is no reaction gas in the container before the cleaning mechanism is extended into the container for cleaning, which increases the replacement time before cleaning and the vacuuming time before the reaction starts to ensure that the oxygen content is qualified, greatly increasing the time between reactions in each reactor, and achieving the effect of synchronous cleaning and saving cleaning time.

[0070] 2. By performing closed cleaning on the spray rod, it is possible to avoid the residual liquid on the spray rod being brought into the reactor when the reactor is used next time, thereby improving the quality of the finished product.

[0071] 3. By replacing the gas, internal residual gas can be avoided, which may lead to leakage and affect the next preparation, thereby improving the cleaning effect.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A closed automatic cleaning system for containers, characterized in that: It comprises an isolation valve installed on the cleaning port of the reactor, a cleaning mechanism storage box is installed on the isolation valve, and a cleaning unit is installed on the cleaning mechanism storage box; the cleaning unit comprises a telescopic motor, a lifting rod, an upper limit switch, a lower limit switch, a three-dimensional spray head and a water supply unit for providing high-pressure cleaning liquid; the telescopic motor drives the lifting rod to lift and lower longitudinally, and the output end of the lifting rod passes through the cleaning mechanism storage box and the isolation valve in turn, and then penetrates into the reactor, and the end of the lifting rod is installed with a three-dimensional spray head connected to the water supply unit; the cleaning mechanism storage box is provided with a spray rod sealing guide cavity; It also includes a spray rod self-cleaning unit for cleaning the spray rod; the spray rod self-cleaning unit includes a self-cleaning nozzle self-cleaning pipe, a self-cleaning water inlet automatic valve, an automatic washing pipe pressure sensor, a front-end valve of the automatic washing pipe pressure sensor and a self-cleaning water inlet manual valve; the input end of the self-cleaning pipe is connected to the water supply unit; the self-cleaning water inlet automatic valve and the self-cleaning water inlet manual valve are both installed on the self-cleaning pipe, and the output end of the self-cleaning pipe is uniformly penetrated into the cleaning mechanism storage box along the circumference of the cleaning mechanism storage box through a plurality of self-cleaning branch pipes; a detection branch pipe is installed on the self-cleaning pipe, and the automatic washing pipe pressure sensor and the front-end valve of the automatic washing pipe pressure sensor are installed on the detection branch pipe; The sealing guide cavity is provided with a piston seal for cleaning the spray rod; the piston comprises upper and lower sealing rings sleeved on the lifting rods at the upper and lower ends of the cleaning mechanism storage box; The sealing guide cavity is also provided with a water seal; the water seal is installed around the lifting rod and is provided with a sealing ring water seal outlet and a sealing water seal inlet communicated with the outside; The sealing guide cavity is provided with a storage replacement unit; the storage replacement unit comprises a water seal isolation module that realizes container sealing through pressure difference and an exhaust gas replacement module that realizes sealing through deoxygenated water absorbing gas; The water seal isolation module has a water seal water source with metering function, a sealed cavity water inlet pipe, a sealed cavity water inlet pressure sensor, a front-end valve of the sealed cavity water inlet pressure sensor, a sealed cavity water inlet pneumatic valve, a sealed cavity water inlet manual valve, a sealed cavity outlet valve, a storage cavity vent pipe, a storage cavity vent pipe manual valve, a storage cavity water outlet replacement pipe pneumatic valve, a storage cavity vent pipe pressure gauge, a storage cavity vent pipe pressure sensor, a front-end valve of the storage cavity vent pipe pressure gauge, and a sealed cavity outlet drainage pipe; the two ends of the sealed cavity water inlet pipe are respectively connected to the water seal and the water seal water source; the sealed cavity water inlet pressure sensor The sensor, the front valve of the sealed chamber water inlet pressure sensor, the sealed chamber water inlet pneumatic valve, and the sealed chamber water inlet manual valve are sequentially installed on the sealed chamber water inlet pipe; one section of the sealed chamber outlet discharge pipe is connected to the sealed water seal outlet, and the other end is connected to the storage chamber vent pipe; the storage chamber vent pipe is sequentially installed with the storage chamber vent pipe pressure sensor, the front valve of the storage chamber vent pipe pressure gauge, the storage chamber vent pipe pressure gauge, the storage chamber water outlet replacement pipe pneumatic valve, and the storage chamber vent pipe manual valve along the water flow direction; the output end of the storage chamber vent pipe is also installed with a liquid level switch; The exhaust gas replacement module includes a storage chamber water inlet pipe, a storage chamber water inlet source, a storage chamber water inlet replacement pneumatic valve, a storage chamber water inlet replacement manual valve and a storage chamber water inlet manual valve in a normally open state; the two ends of the storage chamber water inlet pipe are respectively connected to the storage chamber water inlet source and a cleaning mechanism storage box; the storage chamber water inlet replacement pneumatic valve, the storage chamber water inlet replacement manual valve and the storage chamber water inlet manual valve in a normally open state are all installed on the storage chamber water inlet pipe; the cleaning mechanism storage box is connected to the storage chamber vent pipe through an output pipe.

2. An automatic cleaning method applicable to a closed container automatic cleaning system as claimed in claim 1, characterized in that: The steps include: S1: Before starting cleaning, keep the isolation valve closed and control the replacement unit to operate. After the air inside the storage chamber is exhausted, the replacement unit stops working; S2: After the replacement unit is finished, the isolation valve is opened, and the three-dimensional nozzle is controlled to rise and fall by the telescopic motor to achieve fixed-point cleaning of the three-dimensional nozzle inside the reactor; S3: During the cleaning process, a certain amount of water is input into the spray rod seal guide cavity through the water seal isolation module, so that the shaft seal outlet water pressure is always higher than the storage cavity pressure by 0.03-0.05 MPa, thus achieving water sealing; S4: After the reactor is cleaned, the telescopic motor controls the three-dimensional nozzle to reset and close the isolation valve.

3. The automatic cleaning method of the closed container automatic cleaning system according to claim 2, characterized in that: During the cleaning process, the spray boom is raised and lowered, and a self-cleaning nozzle is installed through the storage chamber to clean the spray boom during extension and retraction to ensure the cleanliness of the spray boom.

4. The automatic cleaning method of the closed container automatic cleaning system according to claim 3, characterized in that: After cleaning is completed and the isolation valve is closed, deoxygenated water is introduced to exhaust the gas in the storage chamber.

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