Valve cleaning device and valve cleaning method

Abstract

The invention discloses a valve cleaning device and a valve cleaning method, and belongs to the technical field of special gas conveying. And a liquid outlet of a storage container in the valve cleaning device is selectively communicated with the first pipe orifice of the valve mounting pipe. The valve mounting pipe is arranged in the containing cavity of the ultrasonic groove and provided with a first connector and a second connector, the first connector and the second connector are configured to be communicated with two connectors of a valve to be cleaned, and a second pipe opening of the valve mounting pipe extends out of the ultrasonic groove. The ultrasonic tank is configured to vibrate the ultrasonic medium within the receiving chamber. The blow-drying assembly comprises a gas conveying pipe, an outlet of the gas conveying pipe is selectively communicated with the first pipe opening, and an inlet of the gas conveying pipe is configured to be communicated with the gas supply unit. When the valve cleaning device is used for cleaning the valve, the valve does not need to be disassembled, and the cleaning quality and the cleaning efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of special gas transportation technology, and more specifically, to a valve cleaning device and a valve cleaning method. Background Technology

[0002] After a period of use, ultrapure gas valves may retain contaminants at their sealing points, affecting the cylinder's seal and product quality. Therefore, to ensure product quality, a valve cleaning device is needed. Summary of the Invention

[0003] In view of the above-mentioned shortcomings, this application provides a valve cleaning device and a valve cleaning method, which can clean valves and improve cleaning efficiency and cleaning quality.

[0004] This application is implemented as follows: In a first aspect, an example of this application provides a valve cleaning apparatus, including a storage container, an ultrasonic tank, and a drying assembly. The storage container has a liquid outlet. A valve mounting tube is disposed within the receiving chamber of the ultrasonic tank, the valve mounting tube having a first port and a second port, and a first interface and a second interface disposed between the first port and the second port, the first interface and the second interface being configured to communicate with two interfaces of a valve to be cleaned. The second port extends beyond the ultrasonic tank. The liquid outlet is optionally connected to the first port. The ultrasonic tank is configured to vibrate an ultrasonic medium within the receiving chamber. The drying assembly includes a gas delivery pipe, the outlet of which is optionally connected to the first port, and the inlet of which is configured to communicate with a gas supply unit.

[0005] In the above-described process, when using the valve cleaning device to clean the valve, the two ports of the valve to be cleaned can be installed at the first and second ports of the valve mounting pipe, respectively, connecting the valve to be cleaned and the valve mounting pipe. Then, the cleaning agent in the storage container is delivered from the outlet to the valve mounting pipe, flowing into the valve to be cleaned to clean its internal cavities. The cleaning residue is then discharged from the second port of the valve mounting pipe to the outside of the receiving tank, preventing cross-contamination between the cleaning agent and the ultrasonic medium. Since the valve cleaning pipe is located inside the ultrasonic tank, the ultrasonic transducer in the ultrasonic tank can vibrate the ultrasonic medium within the tank, transmitting the vibrational force to the valve mounting pipe and the cleaning agent inside the valve to be cleaned, increasing the contact strength between the cleaning agent and the valve and improving the cleaning effect. After cleaning is complete, the delivery of cleaning agent to the valve mounting pipe is stopped, and dry gas is blown into the valve mounting pipe using the gas delivery pipe of the drying assembly to dry the internal cavities of the valve, thus achieving the cleaning of the valve.

[0006] The valve cleaning device described above cleans valves without requiring disassembly or reassembly of valve components (the valve body and valve core do not need to be removed before cleaning, nor do they need to be reassembled after cleaning), thus improving cleaning efficiency. Furthermore, during cleaning, the cleaning agent is directly delivered into the valve, and ultrasonic vibration ensures that all dirty cleaning agent is discharged directly after cleaning each valve, avoiding cross-contamination between the cleaning agent and the ultrasonic medium, and between different types of dirty cleaning agent, thereby improving the cleaning effect. Directly blowing dry gas into the valve not only helps to remove residual dirty cleaning agent but also keeps the valve dry after cleaning, further enhancing the cleaning effect.

[0007] In conjunction with the first aspect, in an alternative embodiment, the storage container is further provided with an air inlet configured to communicate with a gas supply unit.

[0008] Optionally, the gas supply unit is equipped to supply nitrogen.

[0009] In the above implementation process, an air inlet is provided in the storage container. Gas can be supplied to the air inlet through the gas supply unit to maintain a certain pressure inside the storage container. This allows the cleaning agent to be delivered to the cavity of the valve to be cleaned under pressure, further enhancing the contact between the cleaning agent and the valve cavity and improving the cleaning effect. Furthermore, using the same gas supply unit to achieve pressurized cleaning and purging drying of the valve improves the integration of the valve cleaning device.

[0010] In conjunction with the first aspect, in one optional embodiment, the valve mounting pipe includes a first main pipe and a second main pipe. The first main pipe is connected to a plurality of first branch pipes, each of which has a first interface. The second main pipe is connected to a plurality of second branch pipes, each of which has a second interface. An outlet may optionally communicate via a first pipe to a first port located on the first main pipe. A second port of the second main pipe extends beyond the ultrasonic tank.

[0011] In the above implementation process, a first main pipe and a second main pipe are set in the ultrasonic tank, and multiple first branch pipes are connected to the first main pipe and multiple second branch pipes are connected to the second main pipe. This can form multiple first interfaces and second interfaces for installing valves to be cleaned, allowing multiple valves to be cleaned to be installed simultaneously for synchronous cleaning, which can further improve cleaning efficiency.

[0012] In conjunction with the first aspect, in one alternative implementation, each first branch pipe is provided with a first switching valve.

[0013] And / or, each second branch pipe is equipped with a second switching valve.

[0014] In the above implementation process, a first switch valve is provided at each first branch pipe. When it is not necessary to install the valve to be cleaned at the first interface of the branch pipe, the branch pipe can be closed by the first switch valve to prevent the cleaning agent delivered by the first main pipe from leaking into the ultrasonic tank from the first branch pipe and contaminating the ultrasonic medium.

[0015] In conjunction with the first aspect, in one optional embodiment, the valve cleaning device further includes a solvent recovery tank. A second port located on the second main pipe is connected to the solvent recovery tank.

[0016] In the above process, connecting the second port of the second main pipe to the solvent recovery tank allows for the recovery of the dirty cleaning agent after cleaning the valve, facilitating subsequent processing and reuse, and reducing cleaning costs.

[0017] In conjunction with the first aspect, in one alternative implementation, a filter is provided at the end of the second main pipe away from the second branch pipe.

[0018] In the above implementation process, a filter is installed between the second main pipe and the solvent recovery tank to filter the cleaning agent after cleaning the valve, thereby filtering out the contaminants and residues carried by the cleaning agent and preventing them from entering the solvent recovery tank.

[0019] In conjunction with the first aspect, in one alternative implementation, the second main pipe is provided with a vent valve.

[0020] Optionally, the vent valve is located upstream of the filter.

[0021] Optionally, the second main pipe is also provided with a third switching valve, which is located between the vent valve and the filter.

[0022] In the above implementation process, a vent valve is installed at the second main pipe. When the valve to be cleaned needs to be purged and dried, the vent valve can be opened to release the gas and prevent it from being blown into the solvent recovery tank. The vent valve is located upstream of the filter to prevent purging gas from entering the filter. A third switch valve is installed at the second main pipe, also upstream of the filter. When purging and drying the valve, the third switch valve can be closed, and then the vent valve can be opened.

[0023] In conjunction with the first aspect, in one alternative embodiment, the air inlet may be selectively connected to a gas supply unit via a second conduit, the second conduit being equipped with a first pressure regulating valve. And / or, the gas delivery pipe is equipped with a second pressure regulating valve.

[0024] In the above implementation process, a first pressure regulating valve is installed at the second pipeline to regulate the pressure inside the storage container, allowing the cleaning agent to pass through the valve to be cleaned under a certain pressure. Similarly, a second pressure regulating valve is installed at the gas delivery pipe to regulate the pressure of the purging gas delivered to the valve to be cleaned.

[0025] In conjunction with the first aspect, in an alternative embodiment, the drying assembly is provided with a heater, and a gas delivery pipe passes through the heating chamber of the heater.

[0026] In the above-mentioned process, the gas delivery pipe is passed through the heating chamber of the heater, and the heater can be used to heat the purging gas to deliver higher temperature purging gas to the valve to be cleaned, thereby improving the drying effect.

[0027] In a second aspect, embodiments of this application provide a valve cleaning method using the valve cleaning apparatus provided in the first aspect. The cleaning method includes: Connect the two ports of the valve to be cleaned to the first and second ports respectively. Fill the ultrasonic tank with ultrasonic medium and turn on the ultrasonic transducer to perform ultrasonic vibration. Connect the outlet valve installation pipe and supply cleaning agent to the valve to be cleaned for ultrasonic cleaning. After the set ultrasonic cleaning time, disconnect the outlet from the valve installation pipe to stop the supply of cleaning agent. Connect the gas supply pipe to the valve installation pipe and supply gas to the valve to be cleaned for purging. After cleaning, drain the ultrasonic medium from the ultrasonic tank and remove the valve from the valve installation pipe.

[0028] In the above-described process, the valve cleaning device provided in the first aspect cleans the valves without disassembling or reassembling the valve components (the valve body and valve core do not need to be removed before cleaning, nor do they need to be reassembled after cleaning), thus improving cleaning efficiency. Furthermore, during cleaning, the cleaning agent is directly delivered into the valve, and ultrasonic vibration of the cleaning agent allows for direct discharge of the dirty cleaning agent from each valve, avoiding cross-contamination between the cleaning agent and the ultrasonic medium, and between different types of dirty cleaning agent, thereby improving the cleaning effect. Directly blowing dry gas into the valves not only helps to remove residual dirty cleaning agent but also keeps the valves dry after cleaning, further enhancing the cleaning effect.

[0029] In conjunction with the second aspect, in one optional embodiment, the valve to be cleaned is a valve for a phosphine cylinder. The cleaning agent comprises, by mass percentage, 10-20% methanol, 10-20% ethanol, 10-20% propanol, 20-60% water, and 10-20% isopropanol.

[0030] In the above-mentioned process, when cleaning the valve of the phosphine cylinder, the cleaning agent with the above-mentioned ratio can dissolve the contaminants deposited in the phosphine valve. Compared with other cleaning agents, the cleaning effect of the above-mentioned cleaning agent is better. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0032] Figure 1 This is a plan view of the valve cleaning device provided in the embodiments of this application; Figure 2 A flow chart of valve cleaning process provided in the embodiments of this application.

[0033] Reference numerals: 100-Valve cleaning device; 200-Valve to be cleaned; 1-Storage container; 11-Outlet; 12-Inlet; 13-Air inlet; 14-First pipe; 15-Second pipe; 2-Ultrasonic tank; 3-Valve mounting pipe; 31-First interface; 32-Second interface; 33-First main pipe; 34-Second main pipe; 35-First branch pipe; 36-Second branch pipe; 4-Drying assembly; 41-Gas delivery pipe; 42-Heater; 51-First switching valve; 52-Second switching valve; 53-Third switching valve; 54-Drain valve; 55-First pressure regulating valve; 56-Second pressure regulating valve; 6-Solvent recovery tank; 7-Filter. Detailed Implementation

[0034] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0036] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] In the description of the embodiments of this application, the technical terms "front", "rear", "upper", "lower", "bottom", "inner", "outer" and other indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0039] After a period of use, ultrapure gas valves may accumulate contaminants at their sealing points, affecting the cylinder's seal and product quality. For example, valves used in phosphine cylinders may accumulate contaminants inside during use. Therefore, valves need to be cleaned after a certain period of use.

[0040] Currently, when cleaning valve 200, it is often necessary to disassemble the valve into its individual components, such as separating the valve body and valve core. Each component is then cleaned individually. After cleaning, the components are reassembled. This valve disassembly and reassembly process is cumbersome, leading to low cleaning efficiency. Furthermore, small valve parts are easily lost during cleaning, rendering the valve unusable.

[0041] Furthermore, currently, the cleaning of various components is usually done manually, with operators immersing each component in a cleaning agent before removing it. During the cleaning process, the cleaning agent that has removed dirt mixes with other cleaning agents, causing the dirt to re-adhere to other components, resulting in low cleaning quality and efficiency. For the cleaning of some valves, solvents with a certain degree of volatility, corrosiveness, or toxicity are required, which can easily cause harm to operators.

[0042] Therefore, this application provides a valve cleaning device, which can improve the cleaning efficiency and quality of valves to a certain extent. To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0043] Please see Figure 1 The valve cleaning device 100 includes a storage container 1, an ultrasonic tank 2, and a drying assembly 4.

[0044] The storage container 1 has a liquid outlet 11.

[0045] The ultrasonic tank 2 contains a valve mounting pipe 3 within its accommodating chamber. The valve mounting pipe 3 has a first port and a second port (not shown in the figure), and a first interface 31 and a second interface 32 located between the first and second ports. The first interface 31 and the second interface 32 are configured to communicate with the two interfaces of the valve 200 to be cleaned. The second port extends beyond the ultrasonic tank 2. The liquid outlet 11 is optionally connected to the first port. The ultrasonic tank 2 is configured to generate vibrations in the ultrasonic medium within its accommodating chamber.

[0046] The drying assembly 4 includes a gas delivery pipe 41, the outlet of which is optionally connected to a first port, and the inlet of which is configured to be connected to a gas supply unit.

[0047] The valve cleaning device 100 described above cleans the valve 200 without disassembling or reassembling its components (the valve body and valve core do not need to be removed before cleaning, nor do they need to be reassembled after cleaning), thus improving cleaning efficiency. Furthermore, during cleaning, the cleaning agent is directly introduced into the valve, and ultrasonic vibration ensures that all dirty cleaning agent is discharged directly after cleaning each valve, avoiding cross-contamination between the cleaning agent and the ultrasonic medium, and between different types of dirty cleaning agent, thereby improving the cleaning effect. Directly blowing dry gas into the valve 200 not only helps to remove residual dirty cleaning agent but also keeps the valve dry after cleaning, further enhancing the cleaning effect.

[0048] The storage container 1 is used to store the cleaning agent and can discharge the cleaning agent from the outlet 11 of the storage container 1 so that the cleaning agent flows to the valve mounting pipe 3 to clean the valve 200 to be cleaned.

[0049] As an example, the outlet 11 of the storage container 1 can be optionally connected to the valve mounting pipe 3 via the first pipe 14. A corresponding on / off valve can be installed at the first pipe 14.

[0050] This application does not limit the specific structure of the storage container 1, as long as it can store the cleaning agent.

[0051] In some embodiments, the storage container 1 is provided with a liquid inlet 12, which is configured to deliver cleaning agent into the storage container 1.

[0052] In some embodiments, storage container 1 is a sealed container. See also... Figure 2 The storage container 1 is also provided with an air inlet 13, which is configured to be connected to the gas supply unit.

[0053] As an example, the air inlet 13 can be connected to the gas supply unit via the second pipe 15.

[0054] It is understandable that after the gas supply unit supplies a certain amount of gas to the storage container 1 through the air inlet 13, a certain gas pressure can be maintained inside the storage container 1. Therefore, corresponding switching valves can be installed at each opening of the storage container 1 or at the pipes connected to the openings. For example, a switching valve can be installed at the liquid inlet 12, and the switching valve at the liquid inlet 12 can be closed when it is not necessary to inject the delivery agent to prevent gas leakage. Similarly, a switching valve can be installed at the liquid outlet 11 or at the first pipe 14 connected to the liquid outlet 11, and this switching valve can be closed when it is not necessary to discharge the cleaning agent.

[0055] As an example, during use, a certain amount of gas can be supplied to the storage container using a gas supply unit to maintain the gas pressure inside the storage container 1 at around 4 Bar. When cleaning the valve, the outlet 11 of the storage container 1 is connected to the first pipe 14. Under pressure, the cleaning agent in the storage container 1 can be discharged from the outlet 11 to the first pipe 14, and then flow into the valve mounting pipe 3 at the rear end and the valve 200 to be cleaned.

[0056] Furthermore, in some embodiments, to facilitate the delivery of gas into the storage container 1 and the discharge of cleaning agent, the air inlet 13 can be located at the top of the storage container 1, and the drain outlet can be located at the bottom of the storage container 1. With the air inlet 13 above the liquid surface in the storage container 1, bubbling of the cleaning agent can be avoided when gas is delivered into the storage container 1, preventing disturbance of the cleaning agent and affecting its component distribution. Simultaneously, with the drain outlet 11 below the liquid surface, the cleaning agent can be discharged more smoothly.

[0057] Alternatively, in some other embodiments, both the air inlet 13 and the liquid outlet 11 are located at the top of the storage container 1, and one end of the first pipe 14 can be inserted into the storage container 1 from the liquid inlet 12, near the bottom of the storage container 1.

[0058] As an example, the gas supply unit is capable of supplying high-purity nitrogen.

[0059] It is understandable that storage container 1 needs to have a certain degree of high-pressure resistance and stability; therefore, the material of the container needs to have a certain strength. As an example, storage container 1 can be made of stainless steel, such as 304 stainless steel.

[0060] Furthermore, to facilitate the adjustment of the air pressure inside the storage container 1, in some embodiments, a first pressure regulating valve 55 may be provided at the second pipe 15. Furthermore, a pressure gauge may also be provided at the second pipe 15. Both the pressure regulating valve and the pressure gauge are conventional pipeline pressure regulating valves and pressure gauges, and this application does not impose any limitations on them.

[0061] Similarly, to facilitate the adjustment of the gas pressure in the gas delivery pipe 41, in some embodiments, a second pressure regulating valve 56 can be provided at the gas delivery pipe 41. A pressure gauge can also be provided at the gas delivery pipe 41.

[0062] In the valve cleaning device 100 provided in the application embodiment, the gas supply unit can be connected to the gas delivery pipe 41 to purge and dry the valve 200 to be cleaned at the rear end, and can also be connected to the second pipe 15 to deliver gas into the storage container 1 so that the inside of the storage container 1 is under high pressure.

[0063] As an example, the end of the gas supply unit's gas delivery pipe is connected to the second pipe 15 and the gas delivery pipe 41 respectively via a multi-port pipe joint.

[0064] This application does not limit how the gas delivery pipe 41 can be selectively connected to the first port of the valve mounting pipe 3. In some embodiments, the gas delivery pipe 41 can be connected to the first pipe 14, and a switching valve can be installed on the gas delivery pipe 41 near the first pipe 14. To prevent gas from flowing from the first pipe 14 into the storage container 1, a switching valve can also be installed at the front end of the first pipe 14 near the gas delivery pipe 41. The aforementioned switching valve can be a one-way valve, allowing the gas delivered by the gas delivery pipe 41 to flow into the first pipe 14 and then to the rear valve mounting pipe 3, and allowing the cleaning agent in the storage container 1 to flow from the first pipe 14 to the rear valve mounting pipe 3.

[0065] Furthermore, to improve the drying effect of the valve 200 to be cleaned, in some embodiments, the drying assembly 4 is provided with a heater 42. The gas delivery pipe 41 passes through the heating chamber of the heater 42.

[0066] When the gas delivery pipe 41 passes through the heating chamber of the heater 42, the gas inside the gas delivery pipe 41 will be heated.

[0067] This application does not limit the heating temperature of heater 42. In some embodiments, the heating temperature of heater 42 is 50~80°C to avoid damage to the internal sealing structure of valve 200 to be cleaned due to excessive temperature.

[0068] This application does not limit the specific type of heater 42. As an example, heater 42 has a sealed chamber through which gas delivery pipe 41 can pass. Alternatively, gas delivery pipe 41 can be directly connected to the sealed chamber, with gas delivered into the sealed chamber for heating and then discharged from the sealed chamber to the rear gas delivery pipe 41. Heater 42 may also be equipped with a resistance wire to heat the sealed chamber. Heater 42 may also be equipped with a corresponding temperature control device.

[0069] The ultrasonic tank 2 forms a cavity for accommodating the valve mounting pipe 3, the valve 200 to be cleaned, and the ultrasonic medium. The ultrasonic tank 2 can vibrate the ultrasonic medium and cleaning agents.

[0070] This application does not limit the specific type of ultrasonic tank 2, which can be a conventional ultrasonic cleaning machine.

[0071] As an example, the ultrasonic tank 2 is also provided with a drain port for discharging the ultrasonic medium.

[0072] The valve mounting pipe 3 is installed inside the ultrasonic mounting tank to provide an installation position for the valve 200 to be cleaned and to fix the valve 200 to be cleaned. It is also used to connect the outlet 11 of the storage container 1 to the valve 200 to be cleaned, so that the cleaning fluid can flow into the valve 200 to be cleaned and can be discharged from the second port of the valve mounting pipe 3 to the outside of the ultrasonic tank 2 after the valve is cleaned.

[0073] This application does not limit the specific structure of the valve mounting pipe 3. In some embodiments, please refer to [link / reference needed]. Figure 1 The valve mounting pipe 3 includes a first main pipe 33 and a second main pipe 34. The first main pipe 33 is connected to multiple first branch pipes 35, each of which has a first interface 31. The second main pipe 34 is connected to multiple second branch pipes 36, each of which has a second interface 32. The outlet 11 can optionally communicate with the first port of the first main pipe 33 via a first pipe 14. The second port of the second main pipe 34 extends beyond the ultrasonic tank 2.

[0074] A first main pipe 33 and a second main pipe 34 are set in the ultrasonic tank 2, and multiple first branch pipes 35 are connected to the first main pipe 33 and multiple second branch pipes 36 are connected to the second main pipe 34. Multiple first interfaces 31 and second interfaces 32 for installing valves 200 to be cleaned can be formed, and multiple valves 200 to be cleaned can be installed at the same time for synchronous cleaning, which can further improve the cleaning efficiency.

[0075] As an example, four sets of first interfaces 31 and second interfaces 32 for installing the valve 200 to be cleaned can be formed at the valve mounting pipe 3.

[0076] Furthermore, in order to facilitate the use of valve mounting pipe 3 to fix the valve 200 to be cleaned and to prevent the valve 200 to be cleaned from moving and colliding with the inner wall of the ultrasonic tank 2 or other components during the ultrasonic cleaning process, thus damaging the valve 200 to be cleaned, in some embodiments, one of the first main pipe 33 and the second main pipe 34 can be fixed in the ultrasonic tank 2. The fixing method includes, but is not limited to, welding.

[0077] This application does not limit the specific arrangement direction of the first main pipe 33 and the second main pipe 34 within the ultrasonic tank 2. As an example, the first main pipe 33 can be fixed laterally within the ultrasonic tank 2, and multiple vertical first branch pipes 35 can be evenly spaced and installed on the first main pipe 33 along its extension direction. The second main pipe 34 and its second branch pipes 36 can be flexibly arranged. Alternatively, the first main pipe 33 can be fixed vertically within the ultrasonic tank 2, and each first branch pipe 35 can be laterally connected to the first main pipe 33.

[0078] To facilitate the ultrasonic medium submerging the valve 200 to be cleaned and improve cleaning quality, in some embodiments, such as... Figure 1 As shown, the positions of the first and second interfaces in the height direction do not exceed the opening of the ultrasonic groove.

[0079] The second main pipe 34 and the second branch pipe 36 can be flexibly configured to accommodate the installation of valves 200 to be cleaned with different interface orientations. For example, the second main pipe 34 and the second branch pipe 36 can be plastic pipes, while the first main pipe 33 and the first branch pipe 35 can be stainless steel pipes.

[0080] Furthermore, to accommodate the connection of valves 200 to be cleaned with different interface sizes, in some embodiments, multiple sets of first interfaces 31 and second interfaces 32 may have different interface sizes. For example, a first set of first interfaces 31 and second interfaces 32 has a first size for mounting a first valve 200 to be cleaned. A second set of first interfaces 31 and second interfaces has a second size for mounting a second valve 200 to be cleaned.

[0081] Furthermore, when multiple sets of first interfaces 31 and second interfaces 32 are provided at the valve installation pipe 3, if it is not necessary to install the valve to be cleaned 200 at each first interface 31 and second interface 32 during cleaning, in order to prevent the cleaning agent from leaking into the ultrasonic tank 2 from the first interface 31 where the valve to be cleaned 200 is not installed, in some embodiments, please refer to [the relevant documentation / reference needed]. Figure 1 Each first branch pipe 35 can be equipped with a first switching valve 51. The first switching valve 51 can be used to individually control the connection or closure of each first branch pipe 35 and the first main pipe 33.

[0082] In some embodiments, to prevent residual cleaning agent in the second branch pipe 36 from flowing back into the ultrasonic tank 2, a second switching valve 52 may be installed at each of the second branch pipes 36. As an example, the second switching valve 52 may be a one-way valve.

[0083] Furthermore, to facilitate the recovery and reuse of the cleaning agent after cleaning, please refer to the following embodiments. Figure 1 The valve cleaning device 100 is also equipped with a solvent recovery tank 6. The second port of the second main pipe 34 is connected to the solvent recovery tank 6.

[0084] Solvent recovery tank 6 can be relatively airtight. By directly connecting the second port of the second main pipe 34 to solvent recovery tank 6, the cleaning agent can be isolated from the external environment during the cleaning process. If some cleaning agents are volatile or toxic, this can improve the safety of operators.

[0085] In some embodiments, a filter 7 is provided at the end of the second main pipe 34 away from the second branch pipe 36. Providing the filter 7 at the end of the second main pipe 34 away from the second branch pipe 36 allows for the filtration of contaminants and residues carried by the cleaning agent, preventing them from entering the solvent recovery tank 6.

[0086] As an example, the pore size of filter 7 can be 0.01~0.1μm.

[0087] Furthermore, to facilitate the discharge of gas after purging and drying the valve 200 to be cleaned, and to prevent this gas from flowing into the solvent recovery tank 6, in some embodiments, the second main pipe 34 is provided with a vent valve 54. Further, the vent valve 54 is located upstream of the filter 7. Further, the second main pipe 34 is also provided with a third switching valve 53, which is located between the vent valve 54 and the filter 7.

[0088] After ultrasonic cleaning with cleaning agent is completed, the delivery of cleaning agent can be stopped, the third switch valve 53 can be closed, the vent valve 54 can be opened, and then gas can be supplied to the valve 200 to be cleaned using the gas supply unit for purging and drying. The gas discharged from the second main pipe 34 can be discharged through the vent valve 54.

[0089] Furthermore, the outlet of the vent valve 54 can be connected to the exhaust gas treatment tank via a pipeline.

[0090] The switching valve, vent valve 54, and pressure regulating valve in this application are all conventional control valves, and this application does not impose any restrictions.

[0091] Furthermore, this application also provides a method for cleaning valves using the valve cleaning device 100 described above. Please refer to [link to relevant documentation]. Figure 2 ,include: S1. Connect the two ports of the valve 200 to be cleaned to the first port 31 and the second port 32 respectively.

[0092] S2. Fill the ultrasonic tank 2 with ultrasonic medium and turn on the ultrasonic transducer of the ultrasonic tank 2 to perform ultrasonic vibration.

[0093] S3. Connect the outlet 11 to the valve mounting pipe 3, and deliver cleaning agent to the valve 200 to be cleaned for ultrasonic cleaning.

[0094] S4. After the ultrasonic cleaning time is set, disconnect the outlet 11 from the valve mounting pipe 3 to stop the delivery of cleaning agent. Connect the gas delivery pipe 41 to the valve mounting pipe 3 and deliver gas to the valve 200 to be cleaned for purging.

[0095] S5. After cleaning, drain the ultrasonic medium from the ultrasonic tank 2 and remove the valve 200 to be cleaned from the valve mounting pipe 3.

[0096] As an example, in step S1, the valve 200 to be cleaned can be a valve used for phosphine cylinders. The sealing structure of this valve 200 may contain residual contaminants such as phosphine.

[0097] As an example, in step S2, the ultrasonic medium can be water. The ultrasonic medium can submerge the valve 200 to be cleaned.

[0098] As an example, in step S3, the cleaning agent comprises 10-20% methanol, 10-20% ethanol, 10-20% propanol, 20-60% water, and 10-20% isopropanol by mass percentage.

[0099] As an example, in step S4, the gas delivered by gas delivery pipe 41 can be high-purity nitrogen. After stopping the delivery of the cleaning agent, the ultrasonic transducer of ultrasonic tank 2 can be turned off to stop the ultrasound.

[0100] As an example, in step S5, before removing the valve 200 to be cleaned, the cleaned valve can be wiped dry or blown dry. Alternatively, after removing the valve, it can be placed in an oven to dry the water stains on its surface.

[0101] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A valve cleaning device, characterized in that, include: A storage container having a liquid outlet; An ultrasonic bath, wherein a valve mounting pipe is provided in the receiving chamber of the ultrasonic bath, the valve mounting pipe having a first port and a second port, and a first interface and a second interface disposed between the first port and the second port, the first interface and the second interface being configured to communicate with two interfaces of the valve to be cleaned, and the second port extending outside the ultrasonic bath; The liquid outlet can be selectively connected to the first pipe opening; the ultrasonic tank is configured to generate vibration of the ultrasonic medium in the receiving chamber; The drying assembly includes a gas delivery pipe, the outlet of which is optionally connected to the first port, and the inlet of which is configured to be connected to a gas supply unit.

2. The valve cleaning device according to claim 1, characterized in that, The storage container is also provided with an air inlet, which is configured to be connected to the gas supply unit. Optionally, the gas supply unit is equipped to supply nitrogen.

3. The valve cleaning device according to claim 1, characterized in that, The valve mounting pipe includes a first main pipe and a second main pipe. The first main pipe is connected to a plurality of first branch pipes, each of which has a first interface. The second main pipe is connected to a plurality of second branch pipes, each of which has a second interface. The liquid outlet can be selectively connected to the first pipe opening located on the first main pipe via a first pipe. The second pipe opening located on the second main pipe extends beyond the ultrasonic tank.

4. The valve cleaning device according to claim 3, characterized in that, Each of the first branch pipes is equipped with a first switching valve; Optionally, each of the second branch pipes is provided with a second switching valve.

5. The valve cleaning device according to claim 3, characterized in that, The valve cleaning device is also equipped with a solvent recovery tank; the second port of the second main pipe is connected to the solvent recovery tank.

6. The valve cleaning device according to claim 5, characterized in that, A filter is installed at the end of the second main pipe away from the second branch pipe.

7. The valve cleaning device according to claim 6, characterized in that, The second main pipe is equipped with an air vent valve; Optionally, the vent valve is located at the front end of the filter; Optionally, the second main pipe is further provided with a third switching valve, which is located between the vent valve and the filter.

8. The valve cleaning device according to claim 2, characterized in that, The air inlet can be selectively connected to the gas supply unit via a second pipe, the second pipe being equipped with a first pressure regulating valve; And / or, the gas delivery pipe is provided with a second pressure regulating valve.

9. The valve cleaning device according to claim 3, characterized in that, The drying assembly is equipped with a heater, and the gas delivery pipe passes through the heating chamber of the heater.

10. A method for cleaning a valve, characterized in that, The valve cleaning device according to any one of claims 1 to 9 is used to clean the valve to be cleaned; the cleaning method includes: Connect the two ports of the valve to be cleaned to the first port and the second port respectively; fill the ultrasonic tank with ultrasonic medium and turn on the ultrasonic transducer of the ultrasonic tank to perform ultrasonic vibration; Connect the outlet to the valve mounting pipe, deliver cleaning agent to the valve to be cleaned, and perform ultrasonic cleaning on the valve to be cleaned; After the ultrasonic cleaning time is set, disconnect the liquid outlet from the valve mounting pipe to stop the delivery of the cleaning agent; connect the gas delivery pipe to the valve mounting pipe and deliver gas to the valve to be cleaned for purging; after cleaning is completed, discharge the ultrasonic medium in the ultrasonic tank and remove the valve to be cleaned from the valve mounting pipe.

11. The cleaning method according to claim 10, characterized in that, The valve to be cleaned is a valve used in phosphine cylinders; the cleaning agent comprises, by mass percentage, 10-20% methanol, 10-20% ethanol, 10-20% propanol, 20-60% water, and 10-20% isopropanol.

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