Automatic online cleaning system

Abstract

The invention discloses an automatic online cleaning system. The top of the PW water storage tank is connected with a water adding pipeline, and the bottom of the PW water storage tank is provided with a water outlet; the heat circulation device is composed of a centrifugal pump, a heat exchanger, a steam pipeline and a connecting pipeline and can heat the PW water to 85 DEG C for circulation; the temperature monitoring device is arranged in the PW water storage tank to monitor the water temperature and set an alarm threshold value; the CIP station comprises a circulating pump and a disinfection device, and forms a loop with the water consumption point pipeline system and the bottom of the PW water storage tank; the air drying assembly is provided with a compressed air pipeline, a compression control valve and an air filtering device which are used for blow-drying the pipeline. All the components are connected and controlled through specific valves, and the automatic process from water heating, pipeline cleaning, disinfection to drying is achieved. The system has precise regulation and control capability, can be used for deep cleaning, comprehensive disinfection and reliable drying, is wide in adaptability, can effectively improve the cleaning efficiency and sanitary safety of pipelines in multiple industries, and guarantees the production stability and the product quality.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning equipment, in particular to an automatic online cleaning system. Background Art

[0002] In modern industrial production, pipeline systems, as key infrastructure for material transmission, are widely used in many industries, including but not limited to chemical, food, pharmaceutical, beverage, dairy and electronics. These industries have strict requirements on the hygiene and quality control of the production process, and the cleanliness of the pipeline system directly affects product quality and production safety.

[0003] In traditional pipeline cleaning practices, manual cleaning is a common method. This method has many disadvantages. First, the efficiency of manual cleaning is extremely low. For complex and lengthy pipeline systems, cleaning workers need to spend a lot of time to check and clean the inside of the pipelines one by one. For example, in large chemical companies, their production pipelines may stretch for several kilometers, and manual cleaning may take weeks or even months, which will undoubtedly lead to long production stagnation time and seriously affect production efficiency.

[0004] Secondly, manual cleaning cannot guarantee the thoroughness and consistency of cleaning. The internal structure of the pipeline is often complex, with various elbows, tees, reducers and other parts, which can easily become blind spots for cleaning. Manual operation is limited by the flexibility of tools and human operation, and cannot ensure that every inner wall of the pipeline can be cleaned evenly and thoroughly. In the food and pharmaceutical industries, residual dirt, microorganisms or material components from the previous batch in the pipeline may be mixed into the next batch of products, causing product contamination and causing serious food safety or drug quality problems.

[0005] Furthermore, with the development of the industry, more and more production processes have put forward higher requirements for sanitary conditions. For example, in the pharmaceutical industry, aseptic production is a crucial link. The pipelines must not only be cleaned, but also strictly disinfected. In the food industry, especially in the production of dairy products and beverages, the growth of bacteria in the pipelines will cause product deterioration and shorten the shelf life of the products. However, it is difficult to achieve effective disinfection operations with traditional manual cleaning methods, and if the pipelines cannot be dried in time and thoroughly after cleaning, the residual moisture will become a breeding ground for bacteria.

[0006] In addition, manual cleaning also has the problems of high labor intensity and labor cost. As labor costs continue to rise, companies' expenditures on pipeline cleaning are also increasing year by year. Moreover, during manual cleaning, pipelines may be damaged due to improper operation, increasing the company's maintenance costs and equipment replacement frequency.

[0007] Although there are some simple pipeline cleaning equipment on the market, these equipment often have single functions and cannot meet the integrated needs of online cleaning, disinfection and drying of pipeline systems in industrial production. For example, some equipment can only perform simple water flushing, cannot circulate and heat the cleaning water to a specific temperature to enhance the cleaning effect, and lack the function of effectively disinfecting and thoroughly drying the pipeline after cleaning. Therefore, the development of a system that can efficiently and automatically realize online cleaning, disinfection and drying of pipeline systems has important practical significance and broad application prospects. Summary of the invention

[0008] The purpose of the present invention is to provide an automatic online cleaning system, which can realize automatic online cleaning, disinfection and drying of a pipeline system, improve the cleaning efficiency and quality, and ensure the sanitation and safety of the pipeline system during the production process.

[0009] In order to achieve the above object, the present invention is implemented through the following technical solution: an automatic online cleaning system, comprising:

[0010] A PW water storage tank, wherein a pipeline for adding PW water is provided at the top of the PW water storage tank, and a water outlet is provided at the bottom of the PW water storage tank;

[0011] A thermal circulation device, the thermal circulation device is connected to the water outlet and is used to extract the water in the PW water storage tank, heat it and circulate it back to the PW water storage tank until the water temperature in the tank reaches 85°C;

[0012] A temperature monitoring device, disposed in the PW water storage tank, for monitoring the water temperature in the tank;

[0013] A CIP station, the CIP station includes a circulation pump and a disinfection device; the CIP station is connected to the water point pipeline system through a pipeline to form a cleaning water circulation loop, and the CIP station is connected to the bottom of the PW water storage tank through a pipeline to receive the cleaned water and discharge it to the drainage system;

[0014] The air-drying component is used to introduce compressed air into the pipeline system to dry the entire pipeline after cleaning and disinfection are completed.

[0015] As a further improvement of the technical solution of the present invention, the thermal circulation device includes a centrifugal pump, a heat exchanger, a steam pipe and a pipe connecting the centrifugal pump, the heat exchanger and the steam pipe; the water inlet of the centrifugal pump is connected to the water outlet of the PW water storage tank; the water inlet of the heat exchanger is connected to the water outlet of the centrifugal pump, and the heat exchanger is connected to the steam pipe; the steam pipe is used to provide a heat source to the heat exchanger, and the water outlet of the heat exchanger is connected to the top inlet of the PW water storage tank through a pipe.

[0016] As a further improvement of the technical solution of the present invention, the air-drying component includes a compressed air pipeline and a compression control valve arranged on the compressed air pipeline, and the compressed air pipeline is connected to the entire pipeline system for drying the pipeline after cleaning and disinfection are completed.

[0017] As a further improvement of the technical solution of the present invention, the air-drying component also includes an air filtering device.

[0018] As a further improvement of the technical solution of the present invention, when the temperature monitoring device detects that the water temperature in the PW water storage tank reaches 85°C, the operation of the centrifugal pump and the steam entering the heat exchanger are stopped, and at the same time, the pipeline valve leading to the water point pipeline system is opened to allow hot water to enter the water point pipeline system for cleaning. The temperature monitoring device is provided with a temperature threshold for realizing the alarm function.

[0019] As a further improvement of the technical solution of the present invention, a water inlet valve is provided on the top inlet pipe of the PW water storage tank to control the heated water to enter the PW water storage tank.

[0020] As a further improvement of the technical solution of the present invention, a steam valve is provided on the steam pipe for controlling the steam to enter the heat exchanger; an output valve is provided on the connecting pipe between the centrifugal pump and the PW water storage tank for controlling the water to flow out of the PW water storage tank to the centrifugal pump; a heat exchange valve is provided on the connecting pipe between the heat exchanger and the PW water storage tank for controlling the heated water to enter the PW water storage tank from the heat exchanger.

[0021] As a further improvement of the technical solution of the present invention, a circulation valve is provided on the connecting pipe between the CIP station and the water point pipeline system, which is used to control the circulation of cleaning water between the water point pipeline system and the CIP station; a recovery valve is provided on the connecting pipe between the CIP station and the bottom of the PW water storage tank, which is used to control the cleaning water to be discharged from the CIP station to the bottom of the PW water storage tank and enter the drainage system.

[0022] As a further improvement of the technical solution of the present invention, after all water points are cleaned, the CIP station is started to perform circulating self-cleaning and disinfection operations on the returned cleaning water, and the disinfection device uses one or more of ultraviolet rays, ozone or chemical disinfectants.

[0023] As a further improvement of the technical solution of the present invention, after self-cleaning and disinfection are completed, the recovery valve of the pipe connecting the CIP station and the bottom of the PW water storage tank is opened to discharge the cleaning water to the drainage system, and then the compression control valve of the compressed air pipe is opened to blow the pipeline dry.

[0024] The present invention has the following beneficial effects:

[0025] Excellent and efficient automation performance:

[0026] This automatic online cleaning system integrates advanced automation control technology. It can autonomously and smoothly complete a whole set of processes from PW water heating circulation, comprehensive cleaning of pipelines, self-cleaning and disinfection of CIP stations to compressed air drying according to preset procedures and parameters, without manual intervention. For example, in the stage of cleaning water circulation heating, the temperature monitoring device accurately senses the water temperature and interacts with the control center of the system in real time. Once the set threshold of 85°C is reached, the system will quickly and automatically switch to the cleaning stage. The coordinated actions of various related valves and equipment are accurate and correct, which greatly reduces the errors and delays that may be caused by human operation and significantly improves the overall efficiency of the cleaning operation. Compared with the traditional manual cleaning method, this system can greatly shorten the cleaning cycle. Taking the cleaning of the production pipeline of a medium-sized food processing enterprise as an example, manual cleaning may take 10-15 hours, while this system only takes 2-3 hours, which greatly reduces the production downtime caused by cleaning, thereby effectively improving the production capacity and economic benefits of the enterprise, while also greatly reducing labor costs and reducing the human burden of the enterprise.

[0027] Unparalleled cleaning thoroughness and hygienic safety:

[0028] With the help of a well-designed thermal circulation device, the system can stably heat the PW water to 85°C and circulate it for flushing. The high-temperature water flow can effectively dissolve and remove various pollutants such as oil, protein dirt, mineral precipitation, and microbial flora that are stubbornly attached to the inner wall of the pipe. During the cleaning stage, hot water is driven by pressure to flow evenly through every corner of the pipeline system, including various complex elbows, tees, reducers and other parts that are prone to dead corners, ensuring that there is no residual dirt. Subsequently, the powerful disinfection function of the CIP station is further exerted. The various disinfection methods it adopts, such as ultraviolet rays, ozone or high-efficiency chemical disinfectants, can deeply disinfect the cleaning water and the inner wall of the pipe, and completely kill harmful microorganisms such as bacteria, viruses, spores, etc. that may remain. In the food and pharmaceutical industries, this high standard of cleaning and disinfection can effectively prevent cross-contamination of products, ensure the quality safety and hygiene compliance of each batch of products, greatly reduce the risk of product recalls due to pipeline contamination, and effectively maintain the brand reputation and market image of the company.

[0029] Excellent prevention of bacterial growth:

[0030] After completing the cleaning and disinfection process, the air drying component starts quickly, and the strictly filtered pure compressed air enters the entire pipeline system at an appropriate pressure and flow rate. The compressed air flows quickly in the pipeline, forming a strong airflow, which quickly blows away the trace moisture remaining on the inner wall of the pipeline and takes it out of the pipeline. The reasonable pipe diameter design and high-quality material selection of the compressed air pipeline ensure the efficiency and stability of the drying process. In this way, the humidity in the pipeline can be reduced to an extremely low level, effectively destroying the humid environment required for bacterial growth, and eliminating the possibility of bacteria, mold and other microorganisms breeding and growing in the pipeline from the source. This feature allows the pipeline system to always remain clean and dry between two cleaning operations, providing reliable hygiene protection for the next production process. It is especially suitable for industries with extremely strict requirements for microbial control, such as high-end food processing, biopharmaceuticals, etc., which significantly extends the shelf life and shelf life of the product and reduces the product quality risk caused by microbial contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0032] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an automatic online cleaning system according to an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the top view of an automatic online cleaning system according to an embodiment of the present invention;

[0034] Figure 3 for Figure 2 AA section view.

[0035] In the figure: 1-PW water storage tank; 2-thermal circulation device; 3-air drying component; 21-centrifugal pump; 22-heat exchanger; 23-steam pipe; 31-compressed air pipe. DETAILED DESCRIPTION

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In the present invention, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features; in addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0041] See also Figures 1 to 3 The present invention provides a technical solution: an automatic online cleaning system, comprising:

[0042] A PW water storage tank 1, wherein a pipeline for adding PW water is provided at the top of the PW water storage tank 1, and a water outlet is provided at the bottom of the PW water storage tank 1;

[0043] A thermal circulation device 2, the thermal circulation device 2 is connected to the water outlet and is used to extract the water in the PW water storage tank 1, heat it and circulate it back to the PW water storage tank 1 until the water temperature in the tank reaches 85°C;

[0044] A temperature monitoring device, arranged in the PW water storage tank 1, for monitoring the water temperature in the tank;

[0045] A CIP station, the CIP station includes a circulation pump and a disinfection device; the CIP station is connected to the water point pipeline system through a pipeline to form a cleaning water circulation loop, and the CIP station is connected to the bottom of the PW water storage tank 1 through a pipeline to receive the cleaned water and discharge it to the drainage system;

[0046] The air-drying component 3 is used to introduce compressed air into the pipeline system to dry the entire pipeline after cleaning and disinfection are completed.

[0047] Specifically, in this embodiment, the thermal cycle device 2 includes a centrifugal pump 21, a heat exchanger 22, a steam pipe 23, and a pipe connecting the centrifugal pump 21, the heat exchanger 22, and the steam pipe 23; the water inlet of the centrifugal pump 21 is connected to the water outlet of the PW water storage tank 1; the water inlet of the heat exchanger 22 is connected to the water outlet of the centrifugal pump 21, and the heat exchanger 22 is connected to the steam pipe 23; the steam pipe 23 is used to provide a heat source for the heat exchanger 22, and the water outlet of the heat exchanger 22 is connected to the top inlet of the PW water storage tank 1 through a pipe. It should be noted that the thermal cycle device 2 of the present invention has efficient heat transfer and precise temperature control functions: the centrifugal pump 21 provides stable water flow power to ensure that the water circulates smoothly in the system, so that the heat can be evenly distributed to the water in the PW water storage tank 1. The heat exchanger 22 has an efficient heat exchange structure and material, which can quickly transfer the heat of steam to the circulating water, so that the water temperature rises rapidly. The steam pipe 23 provides a reliable heat source for the heat exchanger 22. Through the coordinated work of various components, the PW water can be accurately heated to 85°C, ensuring the temperature conditions of the cleaning water and helping to improve the cleaning effect. For example, in removing oil stains, protein stains, etc., suitable high temperature can significantly enhance the cleaning efficiency and quality.

[0048] Stable circulation system: The pipelines connecting the various components are reasonably designed to ensure the sealing and stability of the entire thermal cycle process, reduce the risk of heat loss and water leakage, enable the thermal cycler 2 to operate continuously and reliably, reduce the risk of cleaning interruption due to equipment failure, improve the operating stability and reliability of the entire cleaning system, and ensure the continuity of the production process.

[0049] Specifically, in the present embodiment, the air-drying component 3 includes a compressed air pipe 31 and a compression control valve arranged on the compressed air pipe 31, and the compressed air pipe 31 is connected to the entire pipeline system for drying the pipeline after cleaning and disinfection. It should be noted that the air-drying component 3 of the present invention has precise airflow control: the compression control valve can accurately adjust the flow and pressure of the compressed air, and can be personalized according to different pipeline system requirements. During the drying process, the amount of compressed air entering can be reasonably adjusted according to factors such as the length, diameter, and complexity of the pipeline, ensuring that the pipeline can be dried quickly without causing damage to the pipeline due to excessive pressure, thereby achieving efficient and safe drying operations, effectively improving the drying efficiency and extending the service life of the pipeline.

[0050] Convenient operation and integration: The connection design of the compressed air pipeline 31 and the entire pipeline system facilitates the installation and layout of the system, so that the air-drying component 3 can be seamlessly integrated into the automatic online cleaning system. The operator can easily start and stop the drying process by controlling the compression control valve, which simplifies the operation process, improves the ease of use and operability of the system, reduces the technical requirements for operators, and facilitates promotion and application in different production environments.

[0051] Specifically, in the present embodiment, the air-drying component 3 also includes an air filter. It should be noted that the air-drying component 3 is equipped with an air filter to prevent secondary pollution: the air filter can effectively remove impurities, moisture, oil, microorganisms and other pollutants in the compressed air. When drying the pipeline, these impurities are prevented from entering the pipeline system, preventing secondary pollution of the pipeline that has been cleaned and disinfected, ensuring the cleanliness and sanitary safety of the pipeline system, and is particularly suitable for industries such as food and pharmaceuticals that have extremely high hygiene requirements, ensuring that product quality is not affected by external pollution factors.

[0052] Extend equipment life: Filtering out harmful components in compressed air can reduce the deposition of these impurities in the pipeline and the erosion of the inner wall of the pipeline, reduce the corrosion and wear rate of the pipeline, extend the service life of the pipeline system and other equipment connected to it, reduce equipment maintenance and replacement costs, and in the long run, improve the economy and stability of the entire production system.

[0053] Specifically, in this embodiment, when the temperature monitoring device detects that the water temperature in the PW water storage tank 1 reaches 85°C, the operation of the centrifugal pump 21 and the steam entering the heat exchanger 22 are stopped, and the pipeline valve leading to the water point pipeline system is opened at the same time, so that hot water enters the water point pipeline system for cleaning. The temperature monitoring device is provided with a temperature threshold for realizing the alarm function. It should be noted that the temperature monitoring device has the functions of accurate monitoring and timely response: the temperature threshold alarm function enables the temperature monitoring device to monitor the water temperature in the PW water storage tank 1 in real time, and quickly issues an alarm signal when the water temperature reaches the preset 85°C. This ensures the precise control of the thermal cycle process. Once the temperature rises abnormally or fails to reach the set temperature, the operator can receive a notification in time and take corresponding measures, such as checking the operating status of the equipment, the steam supply, etc., effectively avoiding problems such as poor cleaning effect or equipment damage caused by water temperature out of control, and improving the safety and reliability of the system. Through accurate temperature monitoring and alarm, the switching time point of the cleaning process can be accurately grasped, avoiding energy waste, time delay or incomplete cleaning caused by entering the cleaning stage too early or too late. For example, it prevents cleaning from starting before the water temperature reaches the requirement, resulting in unsatisfactory cleaning effect and the need for secondary cleaning; it also avoids continuous heating of the water temperature that is too high, wasting steam energy and extending the overall cleaning cycle, thereby optimizing the production process and efficiently utilizing resources, improving production efficiency and economic benefits.

[0054] Specifically, in the present embodiment, a water inlet valve is provided on the top inlet pipe of the PW water storage tank 1 to control the heated water to enter the PW water storage tank 1. It should be noted that the water inlet valve can accurately control the flow rate and time of the heated water entering the PW water storage tank 1. During the thermal cycle, the water inlet speed can be adjusted as needed to ensure the circulation balance of water between the heat exchanger 22 and the storage tank and optimize the heat exchange efficiency. During the cleaning stage, the timing and flow rate of hot water entering the water point pipeline system can be controlled to ensure the orderly progress of the cleaning process. For example, in a complex pipeline system with multiple water points, the cleaning of different areas can be started in sequence in a specific order, which improves the pertinence and effect of the cleaning. When the system is in a non-water inlet state or a specific maintenance stage, the closing of the water inlet valve can effectively isolate the PW water storage tank 1 from the external pipeline, prevent water backflow or accidental leakage, and enhance the safety and stability of the system. At the same time, in the event of equipment failure or abnormality, the water inlet passage can be quickly cut off to avoid further expansion of the accident, reduce the risk of equipment damage and production accidents caused by floods, and ensure the safe environment and normal operation of equipment at the production site.

[0055] Specifically, in the present embodiment, a steam valve is provided on the steam pipe 23 to control the steam to enter the heat exchanger 22; an output valve is provided on the connecting pipe between the centrifugal pump 21 and the PW water storage tank 1 to control the water to flow out from the PW water storage tank 1 to the centrifugal pump 21; a heat exchange valve is provided on the connecting pipe between the heat exchanger 22 and the PW water storage tank 1 to control the heated water to enter the PW water storage tank 1 from the heat exchanger 22. It should be noted that the steam valve can accurately control the flow rate and pressure of steam entering the heat exchanger 22, flexibly adjust the steam supply according to the water temperature demand, realize the precise regulation of the heat exchange process, ensure the heating efficiency and water temperature stability, avoid steam waste and damage to the heat exchanger 22 due to excessive steam pressure. The output valve can adjust the flow rate of PW water flowing out of the storage tank to the centrifugal pump 21, cooperate with the operating characteristics of the centrifugal pump 21, optimize the water flow pressure distribution of the entire thermal cycle system, ensure the stable circulation of water in the system, and effectively prevent the flow of water when the thermal cycle needs to be suspended. The heat exchange valve precisely controls the process of heated water returning from the heat exchanger 22 to the PW water storage tank 1, ensuring the smooth reflux of hot water and maintaining the uniformity of the water temperature in the storage tank, preventing hot water from flowing back or leaking. The three valves work together on their respective connecting pipes, comprehensively improving the operational stability, controllability and safety of the thermal cycle device 2, and laying a solid foundation for the efficient and stable operation of the entire automatic online cleaning system. During the operation of the system, if problems such as abnormal temperature, pressure fluctuations or unstable flow occur, these valves can serve as key troubleshooting nodes. By checking the opening and closing status of the valve, the flow regulation function, and the connection with adjacent equipment, the source of the fault can be quickly located, facilitating timely maintenance and adjustment. During equipment maintenance, closing the corresponding valve can effectively isolate the various components, making it convenient to inspect, replace or clean a single device or local pipeline, reducing the difficulty and workload of maintenance, improving the maintainability and maintenance efficiency of the system, and reducing production downtime caused by equipment maintenance.

[0056] Specifically, in the present embodiment, a circulation valve is provided on the connecting pipe between the CIP station and the water point pipeline system, which is used to control the circulation of the cleaning water between the water point pipeline system and the CIP station; a recovery valve is provided on the connecting pipe between the CIP station and the bottom of the PW water storage tank 1, which is used to control the cleaning water to be discharged from the CIP station to the bottom of the PW water storage tank 1 and enter the drainage system. It should be noted that the circulation valve can accurately control the circulation path and flow rate of the cleaning water between the water point pipeline system and the CIP station. During the cleaning stage, the circulation speed and time can be adjusted according to the degree of contamination and cleaning requirements of the water point to ensure that each water point can be fully cleaned and improve the uniformity and thoroughness of the cleaning effect. The recovery valve is responsible for controlling the process of the cleaning water being discharged from the CIP station to the bottom of the PW water storage tank 1 and entering the drainage system. After self-cleaning and disinfection are completed, the sewage can be discharged in an orderly manner, avoiding the sewage from flowing back to the cleaning system or the water point pipeline system, ensuring the sanitation and cleanliness of the entire system, and also facilitating the centralized treatment and discharge management of the cleaning wastewater, which meets environmental protection requirements. The setting of these two valves makes the coordination between the CIP station and the entire pipeline system closer and more efficient. By reasonably controlling the opening and closing sequence and time of the circulation valve and the recovery valve, the process of cleaning, self-cleaning, disinfection and drainage can be optimized, the waiting time and transition loss between each link can be reduced, and the working efficiency and resource utilization of the entire automatic online cleaning system can be improved. For example, after completing the cleaning of the water point, closing the circulation valve in time and opening the recovery valve can quickly introduce the cleaning water into the drainage system, and then quickly start the self-cleaning and disinfection program of the CIP station, shortening the cleaning cycle, improving the turnover efficiency of the equipment, and bringing higher economic benefits to the production enterprise.

[0057] Specifically, in the present embodiment, after all water points are cleaned, the CIP station is started to perform a circulation self-cleaning and disinfection operation on the refluxed cleaning water, and the disinfection device uses one or more of ultraviolet rays, ozone or chemical disinfectants. It should be noted that ultraviolet disinfection has the advantages of fast sterilization speed and no chemical residue, and can effectively destroy the DNA structure of microorganisms and kill a variety of bacteria, viruses and fungi. Ozone disinfection has strong oxidizing properties, which can oxidize and decompose organic matter and enzymes in microbial cells, has a broad spectrum of sterilization, and can be decomposed into oxygen by itself after disinfection without secondary pollution. Chemical disinfectants can be selected according to different types of microorganisms and degrees of pollution. For example, chlorine-containing disinfectants have a good killing effect on bacteria and viruses, and peracetic acid has a special effect on microorganisms with strong tolerance such as spores. The combination of multiple disinfection methods can give full play to their respective advantages and make up for the shortcomings of a single disinfection method. It can achieve comprehensive and thorough disinfection of various types of microorganisms and pollutants of different natures, ensure the high sanitation and safety of the pipeline system after cleaning, effectively prevent the growth and reproduction of microorganisms in the pipeline, and ensure the stability and reliability of product quality in the production process. It is especially suitable for industries with extremely high requirements for hygiene standards, such as biopharmaceuticals, high-end food processing and other fields. In the actual production process, different products, production processes and pollution conditions have different requirements for disinfection. The choice of multiple disinfection methods enables the CIP station to flexibly adjust the disinfection strategy according to specific needs. For example, for some product production pipelines that are sensitive to chemical residues, ultraviolet and ozone disinfection can be used first; while for pipelines with a higher risk of contamination by specific pathogens, the use of chemical disinfectants can be increased in a targeted manner. This flexibility improves the adaptability of the automatic online cleaning system to different production environments and process requirements, expands its scope of application, and provides enterprises with more personalized and professional pipeline cleaning and disinfection solutions, which helps enterprises optimize production processes and reduce production costs while meeting hygiene standards.

[0058] Specifically, in this embodiment, after self-cleaning and disinfection are completed, the recovery valve of the pipe connecting the CIP station and the bottom of the PW water storage tank 1 is opened to discharge the cleaning water to the drainage system, and then the compression control valve of the compressed air pipe 31 is opened to blow the pipeline dry.

[0059] Example:

[0060] The automatic online cleaning system includes a PW water storage tank 1 with a specific geometric shape and structure, a centrifugal pump 21, a heat exchanger 22, a CIP (Clean-In-Place) station, a steam pipe 23, a compressed air pipe 31, a temperature monitoring device, a thermal cycle device 2 and an air drying component 3, as well as a water point piping system.

[0061] The top of the PW water storage tank 1 is provided with a pipeline for adding PW water, and the bottom is provided with a water outlet, the position and size of which are adapted to the water inlet of the centrifugal pump 21 to ensure smooth water flow.

[0062] The water inlet of the centrifugal pump 21 is connected to the water outlet of the PW water storage tank 1. The centrifugal pump 21 has a power output sufficient to drive water circulation and a specific impeller structure, and can provide a stable water flow pressure.

[0063] The water inlet of the heat exchanger 22 is connected to the water outlet of the centrifugal pump 21. The heat exchanger 22 is connected to a steam pipe 23 for providing a heat source. The water outlet of the heat exchanger 22 is connected to the top inlet of the PW water storage tank 1 through a pipe. The heat exchanger 22 has an efficient heat exchange structure and material to achieve fast and efficient heat transfer.

[0064] The temperature monitoring device is arranged in the PW water storage tank 1 to monitor the water temperature in the tank. The temperature monitoring device has a precise temperature sensing element and a data transmission component, and can accurately feedback the water temperature information in real time.

[0065] The CIP station is connected to the water point pipeline system through pipelines to form a cleaning water circulation loop, and the CIP station is connected to the bottom of the PW water storage tank 1 through a pipeline to receive the cleaned water and discharge it to the drainage system. The CIP station is equipped with a circulation pump and a disinfection device. The disinfection device can use ultraviolet rays, ozone or chemical disinfectants to ensure that the cleaning water is thoroughly disinfected.

[0066] The compressed air pipe 31 is connected to the entire pipeline system for drying the pipeline after cleaning and disinfection. The diameter and material of the compressed air pipe 31 should meet the requirements of rapid drying, and the air drying component 3 includes an air filter to prevent impurities from entering the pipeline system.

[0067] The thermal circulation device 2 includes a centrifugal pump 21, a heat exchanger 22, a steam pipe 23 and pipes connecting them. The thermal circulation device 2 is used to extract water from the PW water storage tank 1, heat it and circulate it back to the PW water storage tank 1 until the water temperature in the tank reaches 85°C. The pipes of the thermal circulation device 2 have an insulation structure to reduce heat loss and improve heating efficiency.

[0068] System installation and debugging:

[0069] According to the design requirements, the PW water storage tank 1, centrifugal pump 21, heat exchanger 22, CIP station, steam pipe 23, compressed air pipe 31, temperature monitoring device and water point piping system are installed and connected to ensure that each component is tightly connected and meets the design specifications.

[0070] After the installation is completed, the temperature monitoring device, centrifugal pump 21, heat exchanger 22 and other equipment are debugged to check the accuracy of temperature sensing, the operating status of the centrifugal pump 21, the heat exchange efficiency of the heat exchanger 22, etc. to ensure their normal operation.

[0071] Cleaning operation process:

[0072] First, open the valve of the PW water adding pipeline, and add the PW water into the PW water storage tank 1 through the tank top pipeline until the preset water level is reached. This valve is a temperature-resistant valve and has a precise opening and closing control mechanism.

[0073] Start the centrifugal pump 21 to make the water flow out from the bottom of the tank, and enter the heat exchanger 22 after being pressurized by the centrifugal pump 21. At the same time, open the steam pipe valve to allow steam to enter the heat exchanger 22 to provide a heat source for the water. The steam pipe valve can withstand the steam pressure and has a precise flow control function. After the water is heated in the heat exchanger 22, it re-enters the PW water storage tank 1 from the top of the tank. The water temperature in the tank is monitored by the temperature monitoring device. When the water temperature reaches 85°C, close the centrifugal pump 21 and the steam pipe valve to stop the water circulation heating. The valve on the pipe connecting the centrifugal pump 21 and the PW water storage tank 1 has a leak-proof structure, and the valve on the pipe connecting the heat exchanger 22 and the PW water storage tank 1 has high temperature and high pressure resistance.

[0074] Open the valve leading to the water point piping system and pump hot water to each water point for cleaning. After the hot water completes the cleaning work at the water point, it flows back to the CIP station through the pipe. The valve on the pipe connecting the CIP station and the water point piping system has good chemical corrosion resistance.

[0075] When all water points are cleaned, the CIP station is started. The CIP station circulates the returned cleaning water to achieve self-cleaning and disinfection operations. The time for self-cleaning and disinfection is set according to actual conditions, for example, it can be set to 30 minutes.

[0076] After self-cleaning and disinfection are completed, open the valve of the pipe connecting the CIP station and the bottom of the PW water storage tank 1 to discharge the cleaning water to the drainage system. The valve has a reliable opening and closing function. Then open the compressed air pipeline valve to introduce compressed air into the entire pipeline system to dry the pipeline in preparation for the next cleaning. The time for introducing compressed air can be determined based on factors such as the pipeline length and diameter. For example, it can be set to 15 minutes. The valve on the compressed air pipeline 31 can effectively control the air flow.

[0077] Working principle of the present invention:

[0078] Cleaning water circulation heating stage

[0079] The heat circulation device 2 is composed of a centrifugal pump 21, a heat exchanger 22, a steam pipe 23 and pipes connecting them. Its core function is to realize the circulation heating of water in the PW water storage tank 1.

[0080] First, the PW water enters the PW water storage tank 1 through the tank top pipe. After starting the centrifugal pump 21, the water is pumped out from the water outlet at the bottom of the PW water storage tank 1 under the action of the impeller of the centrifugal pump 21. The centrifugal pump 21 has a specific impeller structure and sufficient power output, and can stably transport water to the heat exchanger 22.

[0081] The water from the centrifugal pump 21 enters the water inlet of the heat exchanger 22. The heat exchanger 22 is connected to a steam pipe 23, and the steam enters the heat exchanger 22 through the steam pipe 23 to provide a heat source for the heat exchanger 22. The heat exchanger 22 itself has an efficient heat exchange structure and material, which can quickly and fully transfer the heat of the steam to the water entering it.

[0082] The heated water flows out from the outlet of the heat exchanger 22, returns to the top inlet of the PW water storage tank 1 through the pipe, and re-enters the PW water storage tank 1. The pipe of the heat circulation device 2 has a heat preservation structure, which can reduce the heat loss in the process of water returning from the heat exchanger 22 to the PW water storage tank 1, ensuring that as much heat as possible is used to increase the temperature of the water in the PW water storage tank 1.

[0083] During the entire cycle, the temperature monitoring device installed in the PW water storage tank 1 monitors the water temperature in the tank in real time. The precise temperature sensing element in the temperature monitoring device can accurately obtain the water temperature data and feed the data back to the control system through the data transmission component. When the water temperature reaches 85°C, the control system will issue an instruction to stop the operation of the centrifugal pump 21 and close the valve for steam to enter the heat exchanger 22, terminating the thermal cycle process and preparing to enter the cleaning stage.

[0084] Cleaning stage

[0085] When the water temperature reaches 85°C, the hot water is pumped through the pipe system to various water use points for cleaning. After the hot water completes the cleaning work at the water use points, it flows back to the CIP station through the pipe.

[0086] Self-cleaning and disinfecting stages

[0087] After all water points are cleaned, the CIP station is started. The CIP station circulates the returned cleaning water to achieve self-cleaning and disinfection operations, relying on the disinfection device in the CIP station to ensure that the cleaning water is thoroughly disinfected.

[0088] Drainage and drying phase

[0089] After the self-cleaning and disinfection are completed, the cleaning water is discharged from the CIP station through the pipeline from the bottom of the PW water storage tank 1 to the drainage system. After the drainage process is completed, the air drying component 3 is started to perform the drying operation.

[0090] The compressed air pipeline 31 in the air drying component 3 is connected to the entire pipeline system. When drying begins, the valve on the compressed air pipeline 31 is opened, and the compressed air filtered by the air filter device enters the entire pipeline system. The air filter device can effectively remove impurities, moisture, oil, etc. in the compressed air, preventing these pollutants from entering the pipeline during the drying process and causing secondary pollution.

[0091] Since compressed air has a certain pressure, when it enters the pipeline, it will flow from one end of the pipeline to the other end. During this flow process, the compressed air will blow the residual moisture on the inner wall of the pipeline away from the pipe wall, and discharge it from the outlet of the pipeline with the moisture. The diameter and material of the compressed air pipeline 31 are designed, and the diameter is moderate, which can ensure sufficient air flow for rapid drying, and will not cause insufficient air pressure due to excessive diameter; its material has good pressure resistance and corrosion resistance, ensuring that it will not be damaged by the pressure of compressed air and possible chemicals during long-term use.

[0092] As the compressed air continues to circulate and flow in the pipeline system, the moisture in the pipeline gradually decreases until the entire pipeline is dried. The entire drying process can determine the required compressed air flow rate and drying time based on factors such as the length, diameter and complexity of the pipeline. For example, for a simpler short pipeline system, it may only take a short time (such as 5-10 minutes) and a smaller air flow rate to complete the drying; while for a complex long pipeline system, it may take 15-30 minutes or even longer, and a larger air flow rate is required to ensure that all pipelines can be thoroughly dried. When it is determined that the pipeline has been dried through a preset detection method (such as a humidity sensor detecting that the humidity in the pipeline has reached a specified value), the valve on the compressed air pipeline 31 is closed to complete the entire drying process. At this time, the system is ready for the next cleaning.

[0093] To sum up, the automatic online cleaning system of the present invention, with its excellent integration, precise process control, outstanding cleaning and disinfection effects, reliable drying processing capabilities, wide adaptability and outstanding safety and stability, has brought a new technical solution that is efficient, intelligent, hygienic and safe to the field of industrial pipeline cleaning. It has huge application value and broad market prospects, and is expected to be widely promoted and applied in many industries such as chemical, food, and pharmaceuticals, helping enterprises to improve production efficiency, ensure product quality, reduce operating costs and enhance market competitiveness.

[0094] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An automatic online cleaning system, characterized in that: include A PW water storage tank, wherein a pipeline for adding PW water is provided at the top of the PW water storage tank, and a water outlet is provided at the bottom of the PW water storage tank; A thermal circulation device, the thermal circulation device is connected to the water outlet and is used to extract the water in the PW water storage tank, heat it and circulate it back to the PW water storage tank until the water temperature in the tank reaches 85°C; A temperature monitoring device, disposed in the PW water storage tank, for monitoring the water temperature in the tank; A CIP station, the CIP station includes a circulation pump and a disinfection device; the CIP station is connected to the water point pipeline system through a pipeline to form a cleaning water circulation loop, and the CIP station is connected to the bottom of the PW water storage tank through a pipeline to receive the cleaned water and discharge it to the drainage system; The air-drying component is used to introduce compressed air into the pipeline system to dry the entire pipeline after cleaning and disinfection are completed.

2. An automatic online cleaning system according to claim 1, characterized in that: The thermal circulation device includes a centrifugal pump, a heat exchanger, a steam pipe and a pipe connecting the centrifugal pump, the heat exchanger and the steam pipe; the water inlet of the centrifugal pump is connected to the water outlet of the PW water storage tank; the water inlet of the heat exchanger is connected to the water outlet of the centrifugal pump, and the heat exchanger is connected to the steam pipe; the steam pipe is used to provide a heat source for the heat exchanger, and the water outlet of the heat exchanger is connected to the top inlet of the PW water storage tank through a pipe.

3. The automatic online cleaning system according to claim 1, characterized in that: The air-drying component includes a compressed air pipeline and a compression control valve arranged on the compressed air pipeline. The compressed air pipeline is connected to the entire pipeline system for drying the pipeline after cleaning and disinfection are completed.

4. An automatic online cleaning system according to claim 3, characterized in that: The air drying component also includes an air filtering device.

5. The automatic online cleaning system according to claim 2, characterized in that: When the temperature monitoring device detects that the water temperature in the PW water storage tank reaches 85°C, the operation of the centrifugal pump and the steam entering the heat exchanger are stopped, and at the same time, the pipeline valve leading to the water point pipeline system is opened to allow hot water to enter the water point pipeline system for cleaning. The temperature monitoring device is provided with a temperature threshold for realizing the alarm function.

6. The automatic online cleaning system according to claim 1, characterized in that: A water inlet valve is provided on the top inlet pipe of the PW water storage tank to control the heated water to enter the PW water storage tank.

7. The automatic online cleaning system according to claim 2, characterized in that: A steam valve is provided on the steam pipe for controlling the steam entering the heat exchanger; an output valve is provided on the connecting pipe between the centrifugal pump and the PW water storage tank for controlling the water flowing out of the PW water storage tank to the centrifugal pump; a heat exchange valve is provided on the connecting pipe between the heat exchanger and the PW water storage tank for controlling the heated water entering the PW water storage tank from the heat exchanger.

8. The automatic online cleaning system according to claim 1, characterized in that: A circulation valve is provided on the connecting pipe between the CIP station and the water point pipeline system, which is used to control the circulation of cleaning water between the water point pipeline system and the CIP station; a recovery valve is provided on the connecting pipe between the CIP station and the bottom of the PW water storage tank, which is used to control the cleaning water to be discharged from the CIP station to the bottom of the PW water storage tank and enter the drainage system.

9. The automatic online cleaning system according to claim 1, characterized in that: After all water points are cleaned, the CIP station is started to perform circulating self-cleaning and disinfection operations on the returned cleaning water. The disinfection device uses one or more of ultraviolet rays, ozone or chemical disinfectants.

10. The automatic online cleaning system according to claim 1, characterized in that: After self-cleaning and disinfection are completed, the recovery valve of the pipe connecting the CIP station and the bottom of the PW water storage tank is opened to discharge the cleaning water to the drainage system, and then the compression control valve of the compressed air pipeline is opened to blow the pipeline dry.

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