Chemical flushing device control system and device and control method thereof

Abstract

The invention discloses a chemical flushing device control system and device and a control method thereof, and the system comprises a monitoring unit, an acquisition module which comprises an infrared sensor, a chemical gas sensor and a voice recognition module, is installed on a cleaning support, and is used for recognizing the information of an operator, and a control unit which is used for collecting and transmitting the data of the acquisition module. The electromagnetic valve is used for controlling the opening and closing of the electromagnetic valve, the electromagnetic valve is used for controlling the flow of liquid in the branch pipeline, automatic induction starting is achieved, manual operation is not needed, the response time under the emergency condition is greatly shortened, flushing can be provided for a user in time, and the harm of chemical substances to the human body is effectively reduced; and the equipment can be conveniently and quickly started under the special conditions that the hands of the user are occupied or the user is inconvenient to move.

Description

Technical Field

[0001] This invention relates to the field of safety protection equipment, and in particular to a control system, device, and control method for a chemical rinsing apparatus. Background Technology

[0002] In various work environments involving hazardous chemicals, such as chemical production facilities, research laboratories, and pharmaceutical manufacturing workshops, workers face the risk of accidental spills of chemicals onto their bodies or eyes. Traditional safety showers and eyewash stations generally rely on manual operation. In emergencies, operators may be unable to operate them promptly and accurately due to injury, physiological stress, or physical limitations of protective equipment, leading to delays in critical rinsing time and exacerbating the damage. Traditional equipment also has significant functional limitations, with a single cleaning mechanism that only provides water rinsing and lacks an automatic neutralizing agent dispensing system for different types of chemicals. This leads to harmful residues continuously eroding tissues, requiring users to use auxiliary cleaning solutions themselves. This process may cause secondary injuries and delays in treatment due to the injury or panic. Parameter control is lacking, making it impossible to dynamically adjust parameters such as water pressure and temperature according to the type of chemical substance or the severity of the injury. Inappropriate water flow or low-temperature environments may aggravate damage or reduce treatment compliance. Traditional equipment is insufficient in collaborative emergency response, lacking both an automatic alarm module to transmit accident information to rescuers in real time and an integrated voice control or other alternative start / stop methods. It is difficult to meet the needs of special scenarios such as contaminated hands or limited mobility of operators, further delaying the timeliness of collaborative rescue. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is that the water output cannot be made suitable due to the influence of human operation, which will increase the degree of harm to the victim.

[0004] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a control system for a chemical rinsing device, which includes...

[0005] The monitoring unit, including a data acquisition module, comprising an infrared sensor, a chemical gas sensor, and a voice recognition module, is mounted on a cleaning bracket and is used to identify operator information.

[0006] The control unit is used to collect and transmit data from the acquisition module and control the opening and closing of the solenoid valve.

[0007] The solenoid valve is used to control the liquid flow rate in the branch pipeline.

[0008] In a preferred embodiment of the chemical flushing device control system of the present invention: the infrared sensor is used to detect the approach of a human body. When a person enters the sensing area, the system is initially triggered. The chemical gas sensor is used to identify the concentration of chemical gases within 50 centimeters of the shower and eyewash station, and sends a signal to the control unit after the gas concentration exceeds a safety threshold. The safety threshold is set according to different types of chemical substances. For acidic substances, the safety threshold is: the maximum permissible concentration is less than 1 mg / m³. 3 The safety threshold for alkaline substances is: the maximum permissible concentration is less than 2 mg / m³. 3 .

[0009] In a preferred embodiment of the chemical flushing device control system of the present invention: the solenoid valve adjustment mechanism is as follows: based on the type and concentration of hazardous chemicals detected by the chemical gas sensor, and the information on the human body location and degree of harm obtained by the infrared sensor, the control unit adjusts the water flow of the shower and eyewash station through the solenoid valve. When the concentration is high, the water flow is increased to quickly flush away harmful substances; when the concentration is low, the water flow is reduced to avoid excessive flushing and unnecessary harm to the human body.

[0010] A chemical flushing device, comprising

[0011] A cleaning bracket, wherein a shower is provided at the upper end of the cleaning bracket and an eyewash station is provided at the center of the cleaning bracket;

[0012] The data acquisition module is located at one end of the cleaning bracket near the eyewash station.

[0013] In a preferred embodiment of the chemical rinsing device of the present invention: a main pipeline is provided on the cleaning bracket, and branch pipelines are provided on the main pipeline. The main pipeline is interconnected with the shower and the eyewash station through the branch pipelines.

[0014] In a preferred embodiment of the chemical rinsing device of the present invention: a solenoid valve is provided on both the main pipeline and the branch pipeline, and a cleaning solution storage tank is provided at the end of the branch pipeline away from the shower and eyewash station for auxiliary rinsing of chemical substances.

[0015] In a preferred embodiment of the chemical rinsing device of the present invention: three cleaning fluid storage tanks are provided for storing 0.5% sodium bicarbonate solution, 2% dilute boric acid solution, and 1% acetic acid solution, and a level gauge is provided in each cleaning fluid storage tank.

[0016] In a preferred embodiment of the chemical rinsing device of the present invention: a mounting base is provided at the lower end of the cleaning bracket, and a pressure sensor is also provided on the mounting base.

[0017] A control method, including

[0018] The device identifies whether anyone is approaching by collecting data and activates the device based on the identified information.

[0019] After the device is started, it identifies the nature of chemical substances within 50 centimeters of the shower and eyewash station by using the chemical gas sensor embedded in the acquisition module, and then uses clean water and corresponding cleaning solution to rinse and clean according to the chemical properties.

[0020] After cleaning, the cleaning solution inside the shower and eyewash pipes is rinsed with clean water.

[0021] In a preferred embodiment of the control method described in this invention: the rinsing time with clean water during personnel cleaning is 3 to 5 minutes, the rinsing time with cleaning solution is 2 to 3 minutes, and the cleaning time with cleaning solution inside the pipeline is 3 to 5 minutes.

[0022] The beneficial effects of this invention are as follows: it achieves automatic sensor start-up, eliminating the need for manual operation, significantly shortening the response time in emergency situations, providing timely rinsing for users, effectively reducing the harm of chemicals to the human body, and the newly added voice control function allows for convenient and quick activation of the equipment even when the user's hands are occupied or their mobility is limited. The intelligent parameter adjustment system can automatically adjust parameters such as water flow, water temperature, type of cleaning fluid, and rinsing time according to different dangerous situations, providing targeted rinsing solutions, improving the rinsing effect and comfort, and the water purification system ensures the quality of the rinsing water, avoiding secondary harm to the human body due to water quality problems. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein:

[0024] Figure 1 A schematic diagram of the overall structure of the present invention is shown;

[0025] Figure 2 A schematic diagram of the pipeline structure of the present invention is shown;

[0026] Figure 3 A schematic diagram of the rinsing time determination process of the present invention is shown;

[0027] Figure 4 A schematic diagram of the detection process of the present invention is shown;

[0028] Figure 5 A schematic diagram of the system processing flow of the present invention is shown;

[0029] Figure 6 A schematic diagram of the chemical substance detection process of the present invention is shown. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0031] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0032] Reference Figure 1 and Figure 2 This embodiment provides a chemical rinsing device control system, device, and control method, including a data acquisition module 4, which includes an infrared sensor, a chemical gas sensor, and a voice recognition module, installed on a cleaning bracket 1, for identifying operator information. A control unit is used to collect and transmit data from the data acquisition module 2 and control the opening and closing of a solenoid valve 7, which controls the liquid flow rate in a branch pipe 6. The infrared sensor detects the approach of a person; when a person enters the sensing area, the system is initially triggered. The chemical gas sensor identifies the concentration of chemical gases within 50 centimeters of the showerhead 2 and eyewash station 3, and sends a signal to the control unit when the gas concentration exceeds a safety threshold. The safety threshold is set according to different types of chemical substances. The voice recognition module is installed in a conspicuous location with good sound acquisition, such as above the front of the showerhead and eyewash station, approximately 1.6 to 1.8 meters above the ground, ensuring that the user's voice commands can be clearly acquired when operating while standing. To reduce environmental noise interference, a noise-canceling microphone can be equipped to improve voice recognition accuracy.

[0033] The speech recognition module extensively collects speech data related to safe chemical rinsing devices, covering start commands such as "start the shower" and "turn on the eyewash station" with different accents, speaking speeds, and volumes. It also collects background noise from the surrounding environment, such as the operation of chemical equipment and laboratory instrument noise, to construct a rich dataset simulating real-world usage. The collected speech data is cleaned by removing noise and invalid segments, adjusting the audio format and sampling rate to a standard format suitable for model processing, thus improving data quality and laying a solid foundation for training. The preprocessed data is divided into training, validation, and test sets. The model is trained using the training set, and it continuously learns the correspondence between speech features and the semantics of commands. During training, internal parameters are adjusted, and the model performance is evaluated using the validation set. Training strategies are adjusted in a timely manner to prevent overfitting and ensure the model's generalization ability. The trained model is comprehensively evaluated using the test set, taking into account metrics such as accuracy and recall. If the metrics do not meet expectations, the error types and causes are analyzed, and targeted optimizations are made, such as increasing data diversity, adjusting the model structure, and optimizing the training algorithm. The model is continuously iterated to improve recognition accuracy. The trained speech recognition module is integrated into the cleaning stand 1 for field testing to observe its recognition performance in real-world scenarios. User feedback is collected, and for any problems that arise, such as misrecognition in specific environments or delays in command recognition, the model is optimized again or the recognition threshold is adjusted until it meets the actual usage requirements.

[0034] The safety threshold for acidic substances is: the maximum permissible concentration is less than 1 mg / m³. 3 The safety threshold for alkaline substances is: the maximum permissible concentration is less than 2 mg / m3, and the chemical gas sensor model is [model number missing]. Installed in a location easily accessible to air and the surrounding environment, such as above or to the side of the shower 2 and eyewash station 3 in well-ventilated areas, and to avoid obstruction, it can be installed 110 to 20 centimeters away from the cleaning bracket. This ensures timely monitoring of hazardous chemicals in the air and surrounding environment. For example, in a pharmaceutical production workshop, hazardous chemicals generated by drug volatilization can be quickly detected by the sensor. The infrared sensor model is HC-SR501. It should be installed around the shower 2 and eyewash station 3 at a suitable height and angle, generally about 1.5-1.7 meters from the ground, at a horizontal or slightly downward angle to ensure effective detection of human approach. When a person enters the sensing area with a radius of about 1 to 2 meters, the system can be quickly and initially triggered. For example, in a chemical workshop, when a worker approaches the equipment from the side, the infrared sensor can promptly capture the human signal. When a highly corrosive chemical splash is detected, the control system sends a signal to increase the opening; if it is a minor splash, it sends a signal to decrease the opening.

[0035] The solenoid valve 7's adjustment mechanism works as follows: Based on the type and concentration of hazardous chemicals detected by the chemical gas sensor, and the information on the human body's location and degree of harm obtained by the infrared sensor, the control unit adjusts the water flow of the shower 2 and eyewash station 3 via the solenoid valve 7. When the concentration is high, the water flow is increased to quickly flush away harmful substances; when the concentration is low, the water flow is decreased to avoid excessive rinsing and unnecessary harm to the human body. The eyes are relatively fragile and cannot withstand excessive water flow even when splashed with highly corrosive chemicals. Generally, the maximum water flow rate is controlled at 3-5 L / min, and the minimum at 1-2 L / min. For situations where large areas of skin come into contact with highly corrosive chemicals, such as the arms and legs, the water flow rate should be controlled to ensure the skin is properly protected. To quickly remove chemicals, the water flow rate can be appropriately increased, provided the skin can tolerate it. Generally, the maximum water flow rate is controlled at 8-10 L / min, and the minimum at 3-5 L / min. After receiving the control signal, the solenoid valve 7 changes the valve opening. The change in valve opening directly affects the cross-sectional area of ​​the water flow channel, thereby achieving precise adjustment of the water flow. When the valve opening increases, the cross-sectional area of ​​the water flow channel increases, and the water flow increases. When the valve opening decreases, the cross-sectional area of ​​the water flow channel decreases, and the water flow decreases. The solenoid valve 7 is equipped with a position feedback device to feed back the actual valve opening to the control system. The control system compares the actual opening with the target opening. If there is a deviation, it makes dynamic adjustments to ensure accurate valve opening and achieve stable and precise water flow regulation.

[0036] refer to Figures 3 to 6In one embodiment provided in this application, a cleaning bracket 1 is provided. A shower 2 is provided at the upper end of the cleaning bracket 1, and an eyewash station 3 is provided at the center of the cleaning bracket 1. A data collection module 4 is provided at the end of the cleaning bracket 1 near the eyewash station 3. A main pipe 5 is provided on the cleaning bracket 1, and branch pipes 6 are provided on the main pipe 5. The main pipe 5 is interconnected with the shower 2 and the eyewash station 3 through the branch pipes 6. Solenoid valves 7 are provided on both the main pipe 5 and the branch pipes 6. A cleaning fluid storage tank is provided at the end of the branch pipes 6 away from the shower 2 and the eyewash station 3 for assisting in rinsing chemical substances. A mounting base 8 is provided at the lower end of the cleaning bracket 1. A pressure sensor is also provided on the mounting base 8. Three cleaning fluid storage tanks are provided for storing 0.5% sodium bicarbonate solution, 2% dilute boric acid solution, and 1% acetic acid solution. The cleaning solution storage tank is equipped with a level gauge, with pressure sensors of model PT124B-214. Some of these sensors are installed near the nozzles to detect whether a person touches the nozzles, while others are installed on the ground around the shower 2 and eyewash station 3. Three to four sensors are evenly distributed within a circular area with a radius of 0.5 to 1 meter centered on the equipment to detect the position of a person, the splashing of objects, or collisions. As long as a person stands in this area or touches the nozzle, the system can be initially triggered, and a timely response can be made in the event of reagent spills in the laboratory. The level gauges are installed in the storage tanks for 0.5% sodium bicarbonate solution, 2% dilute boric acid solution, and 1% acetic acid solution, respectively, located on the side of the tank near the top, 10 to 20 centimeters from the tank opening, to monitor the cleaning solution level in real time. When the cleaning solution is insufficient, the system will promptly report the problem to the control system to ensure the supply of cleaning solution.

[0037] When the chemical gas sensor detects an acidic substance, after rinsing with water, open the valve of the 0.5% sodium bicarbonate solution storage tank, close the water rinsing, and proceed with subsequent cleaning with the 0.5% sodium bicarbonate solution. When the chemical gas sensor detects an alkaline substance, for eye rinsing, after rinsing with water, open the valve of the 2% dilute boric acid solution storage tank, close the water rinsing, and proceed with subsequent cleaning with the 2% dilute boric acid solution. For skin rinsing, after rinsing with water, open the valve of the 1% acetic acid solution storage tank, close the water rinsing, and proceed with subsequent cleaning with the 1% acetic acid solution.

[0038] refer to Figures 1 to 6The acquisition module 4, including an infrared sensor, a chemical gas sensor, and a voice recognition module, is installed on the cleaning bracket 1 to identify operator information. The control unit is used to collect and transmit data from the acquisition module 2 and control the opening and closing of the solenoid valve 7, which controls the liquid flow rate in the branch pipe 6. The cleaning bracket 1 has a shower 2 at its upper end and an eyewash station 3 at its center. The acquisition module 4 is located at the end of the cleaning bracket 1 near the eyewash station 3. The acquisition module 4 identifies whether personnel are approaching and activates the device based on the identification information. After activation, the chemical gas sensor embedded in the acquisition module 4 identifies the chemical properties within 50 cm of the shower 2 and eyewash station 3 and uses clean water and corresponding cleaning solutions to rinse and clean them according to the chemical properties. After personnel clean, the cleaning solution in the pipes of the shower 2 and eyewash station 3 is rinsed with clean water. The rinsing time with clean water is 3 to 5 minutes, the rinsing time with cleaning solution is 2 to 3 minutes, and the rinsing time with cleaning solution in the pipes is 3 to 5 minutes.

[0039] A water temperature monitoring device can also be installed on the equipment, mounted on the water outlet pipe of the shower and eyewash station, close to the showerhead, about 10-15 cm away. This allows for real-time and accurate monitoring of the rinsing water temperature, providing data support for intelligent temperature adjustment and preventing secondary harm to the user from unsuitable water temperatures. A vital signs monitoring device can also be installed on the side of the equipment, close to the user: a sensor can be installed on the side of the main body of the shower and eyewash station, at a height of about 1.5-1.7 meters above the ground. For example, a non-contact vital signs monitoring sensor using infrared technology can be used; when a person approaches the equipment to rinse, the sensor can detect the vital signs at a certain distance. The device monitors the respiratory rate and heart rate of personnel. This installation method avoids direct contact with the human body, thus preventing hygiene issues. It is not limited by whether personnel actively contact the equipment. As long as the personnel are within the effective detection range, vital sign data can be obtained in a timely manner. The pipeline temperature acquisition device is installed on the outside of the pipeline and around the water tank. On the pipeline, one device is installed every 1 to 2 meters, with a focus on installing it at bends, valves, and other easily frozen parts. Around the water tank, it is installed on the outer wall of the water tank near the bottom and top. It is used to monitor the ambient temperature in real time, provide data for the northern anti-freezing system, control the start and stop of the electric heating tape, and prevent the liquid in the pipeline and water tank from freezing.

[0040] During use, the system initializes, activating the remote monitoring and alarm system. Initial settings are performed on the wireless communication module, vital sign monitoring sensors, and remote monitoring center equipment to ensure all components function correctly. Data acquisition begins, with various sensors on the shower and eyewash station collecting data, including equipment operating status, sensor data, cleaning fluid levels, and vital sign data. The wireless communication module packages the collected data and transmits it in real-time to the remote monitoring center. The remote monitoring center receives the data, parses and stores it, and determines if the equipment is malfunctioning. The monitoring center analyzes the received data to determine if there is a fault, insufficient cleaning fluid, or a need for maintenance. If an anomaly is detected, an alarm is triggered and maintenance personnel are notified. If the equipment is functioning normally, the system checks for automatic sensor activation, triggering an alarm and notifying maintenance personnel. When an anomaly occurs, the monitoring center automatically sends alerts to maintenance personnel via SMS and email, informing them of the anomaly, recording and processing the information. The control center records equipment malfunction information. Maintenance personnel inspect and repair the equipment according to the notification, handle abnormal situations, and determine if anyone has triggered the automatic sensor activation system. If the equipment is normal, the monitoring center continues to monitor whether anyone has triggered the automatic sensor activation system. If not, monitoring continues. If triggered, a vital signs monitoring sensor is used to detect the person's vital signs. The vital signs monitoring sensor starts working and monitors the user's heart rate, respiration, and other vital signs data in real time to determine if the vital signs are abnormal. The vital signs data is analyzed to determine if the person's vital signs are abnormal. If the vital signs are abnormal, injury information is obtained and a notification is sent. If the vital signs are normal, monitoring continues, injury information is obtained, and a notification is sent. When vital signs are abnormal, the system obtains information such as the location of the injury and the types of hazardous chemicals that may have been exposed, and sends it to the preset rescue personnel and relevant management personnel through various means such as SMS, voice calls, and emails. The monitoring center issues a high-decibel audible and visual alarm to remind monitoring personnel to pay attention to and handle the injury situation in a timely manner, and then records and handles the abnormal information.

[0041] Chemical gas sensors detect hazardous chemicals in the surrounding environment and transmit the detected types and concentrations to the control system. Upon receiving the data, the control system determines the type and concentration of the hazardous chemicals. For concentrated acids or high-concentration hazardous chemicals, a preset rinsing time of 15-20 minutes is used; for concentrated alkalis or medium-concentration hazardous chemicals, a preset time of 10-15 minutes is used; and for dilute acids, dilute alkalis, or low-concentration hazardous chemicals, a preset time of 5-10 minutes is used. After the preset time is set, the control system starts a timing program. During the timing process, the system continuously checks whether the preset rinsing time has been reached. If the preset time has not been reached, the system checks for a voice command to extend the rinsing time. If a command is received, the rinsing time is extended and the timing continues; otherwise, it waits until the preset time is reached. When the preset rinsing time is reached, the system automatically shuts off the water flow, ending the rinsing process.

[0042] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A control system for a chemical rinsing device, characterized in that: include, A cleaning support (1) is provided with a data acquisition module (4), which consists of an infrared sensor, a chemical gas sensor and a voice recognition module, and is used to identify operator and environmental information. The control unit is located on the acquisition module (4) and is used to process the data acquired by the acquisition module (4) and control the fluid on / off state and flow parameters in the pipeline according to the adjustment mechanism.

2. The control system for the chemical rinsing apparatus according to claim 1, characterized in that: The infrared sensor is used to detect the approach of a human body. When a person enters the sensing area, the system is initially triggered. The chemical gas sensor is used to identify the concentration of chemical gases within 50 centimeters of the shower (2) and eyewash station (3), and sends a signal to the control unit after the gas concentration exceeds the safety threshold. The safety threshold is set according to different types of chemical substances. The safety threshold for acidic substances is: the maximum allowable concentration is less than 1 mg / m³. 3 The safety threshold for alkaline substances is: the maximum permissible concentration is less than 2 mg / m³. 3 .

3. The control system for the chemical rinsing apparatus according to claim 1, characterized in that: The adjustment mechanism is as follows: based on the type and concentration of hazardous chemicals detected by the chemical gas sensor, and the information on the location and degree of injury of the human body obtained by the infrared sensor, the control unit adjusts the water flow of the shower (2) and the eyewash station (3) through the solenoid valve (7). When the concentration is high, the water flow is increased to quickly wash away the harmful substances. When the concentration is low, the water flow is reduced to avoid excessive washing and unnecessary harm to the human body.

4. A chemical rinsing apparatus, comprising a chemical rinsing apparatus control system as described in any one of claims 1 to 3, characterized in that: include A cleaning bracket (1) is provided with a shower (2) at the upper end of the cleaning bracket (1) and an eyewash station (3) is provided at the center of the cleaning bracket (1); The acquisition module (4) is located at one end of the cleaning bracket (1) near the eyewash station (3).

5. The chemical rinsing apparatus according to claim 4, characterized in that: The cleaning bracket (1) is provided with a main pipe (5), and the main pipe (5) is provided with a branch pipe (6). The main pipe (5) is connected to the shower (2) and the eyewash station (3) through the branch pipe (6).

6. The chemical rinsing apparatus according to claim 5, characterized in that: Solenoid valves (7) are installed on both the main pipeline (5) and the branch pipeline (6). A cleaning fluid storage tank is installed at the end of the branch pipeline (6) away from the shower (2) and the eyewash station (3) to assist in rinsing chemical substances.

7. The chemical rinsing apparatus according to claim 6, characterized in that: The cleaning solution storage tank is provided in three parts, which are used to store 0.5% sodium bicarbonate solution, 2% dilute boric acid solution, and 1% acetic acid solution. Each cleaning solution storage tank is equipped with a level gauge.

8. The chemical rinsing apparatus according to claim 4, characterized in that: The cleaning bracket (1) is provided with a mounting base (8) at its lower end, and a pressure sensor is also provided on the mounting base (8).

9. A control method, comprising the chemical rinsing apparatus as described in any one of claims 4 to 8, characterized in that: include The acquisition module (4) identifies whether a person is approaching and activates the device based on the identification information; After the device is started, the chemical gas sensor embedded in the acquisition module (4) identifies the chemical properties of the shower (2) and eyewash station (3) within 50 cm, and uses clean water and corresponding cleaning solution to rinse and clean according to the chemical properties. After cleaning, rinse the cleaning solution in the shower (2) and eyewash (3) pipes with clean water.

10. The control method according to claim 9, characterized in that: When cleaning personnel, the rinsing time with clean water is 3 to 5 minutes, the rinsing time with cleaning solution is 2 to 3 minutes, and the cleaning time with cleaning solution inside the pipeline is 3 to 5 minutes.

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