Construction method of PVDF polymerization post-processing clean space

Abstract

The application discloses a construction method of a PVDF post-polymerization processing clean space, and comprises the following steps: S1, a wind air conditioning unit is arranged on the top of the clean space; S2, a circulating hot water pipeline or an electric heating film is embedded in the ground or the wall surface; S3, a face recognition access control is arranged at the entrance of the clean space; S4, an automatic induction type phosphorus-free cleaning product dispenser is arranged in the bathroom; S5, the changing room is divided into a common changing area and a clean changing area; S6, the clean pipeline of the clean space adopts a PVDF pipeline with a mirror-polished inner wall; S7, the equipment in the clean space that contacts materials all adopts 316L stainless steel; S8, the fireproof ceiling adopts a double-layer structure; S9, the ground of the clean space adopts an anti-static epoxy self-leveling coating; and S10, the above parameters are controlled through a PLC controller and an industrial Ethernet, and five units of environmental parameter acquisition, personnel management, material conveying monitoring, equipment state monitoring and safety early warning are integrated.

Description

Technical Field

[0001] This invention relates to the field of PVDF chemical production technology, and in particular to a method for constructing a clean space for PVDF post-polymerization treatment. Background Technology

[0002] In the post-polymerization processing of PVDF, product quality requires extremely high standards for the cleanliness, temperature and humidity stability, and safety of the production environment. Existing technologies suffer from the following problems: First, traditional air conditioning systems struggle to simultaneously meet high-precision temperature and humidity requirements (temperature fluctuation ±1℃, humidity fluctuation ±5%) and high-level cleanliness (ISO 5 and above). Conventional heating methods easily trigger air convection dust, leading to suspended pollutants. Second, when personnel enter the cleanroom, ordinary shower rooms and changing rooms cannot effectively remove contaminants such as clothing, hair, and dander, and lack identity verification and purification process control. Third, material conveying pipelines are mostly made of ordinary materials with rough inner walls that easily retain impurities; non-stainless steel equipment poses a risk of corrosion and particle shedding, and electrostatic protection measures are insufficient. Fourth, existing cleanroom ceilings have poor fire resistance, floor cleaning and maintenance are difficult, and there is a lack of real-time monitoring mechanisms for flammable / toxic gases, posing safety hazards. These problems make PVDF resin susceptible to contamination during production, affecting product purity and performance stability, and failing to meet the demands of high-end applications. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a method for constructing a clean space after PVDF polymerization and treatment.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: A method for constructing a clean space after PVDF polymerization and treatment includes the following steps: S1. An air conditioning unit is installed at the top of the clean space. The air conditioning unit includes a three-stage filtration system of primary, medium and high efficiency filters. It uses chilled water for cooling, electric heating and wet film humidification. It integrates temperature and humidity sensors and a dust particle counter to adjust the temperature, humidity and cleanliness in real time. S2. Install circulating hot water pipes or electric heating films in the ground or walls to achieve radiant heating through closed circulation, avoiding dust generation from air convection, and achieving a heating temperature control accuracy of ±1℃. S3. Install facial recognition access control at the entrance of the clean space, link it with the enterprise ERP system to realize personnel identity verification, and implement hierarchical access control and traceability of entry and exit records; S4. The bathroom is equipped with an automatic sensor-type phosphate-free cleaning product dispenser, a thermostatic shower head, a high-pressure shoe cleaner, and a floor drainage channel and a three-stage filtration device. S5. Divide the changing room into a regular changing area and a clean changing area, and install an air shower in the middle; S6. Cleanroom piping uses PVDF pipes with mirror-polished inner walls, connected by hot-melt welding, and pressure sensors and leak detection devices are installed at the connection points. S7. All equipment in the clean space that comes into contact with materials is made of 316L stainless steel with electrolytic polishing treatment and a design without dead corners in the internal flow channels. At the same time, 6mm² stainless steel jumpers are used between the equipment and the pipes, which are bolted and coated with conductive grease. Static monitoring sensors are installed at the jumper points. S8. The fireproof ceiling adopts a double-layer structure, with an outer layer of stainless steel plate and an inner layer filled with fireproof rock wool; fire sprinkler pipes and smoke sensors are pre-embedded, which automatically start the sprinkler system and cut off the power supply in case of fire. At the same time, combustible gas and toxic gas sensors are evenly distributed on the fireproof ceiling. When the levels exceed the limits, an audible and visual alarm is triggered, and the air conditioning unit is activated to provide full-volume ventilation, increasing the ventilation volume to 150%. S9. The floor of the clean space is coated with an anti-static epoxy self-leveling layer and is equipped with a sloped drainage channel that connects to the sewage treatment system. S10. The above parameters are integrated through a PLC controller and an industrial Ethernet, encompassing five major units: environmental parameter acquisition, personnel management, material conveying monitoring, equipment status monitoring, and safety early warning, to achieve remote monitoring, fault early warning, and multi-module emergency linkage.

[0005] In step S1, the three-stage filtration device has a primary efficiency of G4, a medium efficiency of F8, and a high efficiency of H13; the integrated temperature and humidity sensor has an accuracy of ±0.5℃ / ±2%RH; the dust particle counter can monitor particles larger than 0.3μm; the real-time temperature adjustment range is 20-25℃; the humidity is 40-60%; and the cleanliness is maintained at ISO5 level.

[0006] In step S2, the circulating hot water pipe has a diameter of DN20 and a spacing of 200mm.

[0007] In step S3, the facial recognition access control system incorporates an AI image recognition algorithm; achieves a recognition error rate of <0.1% for personnel identity verification; classifies access permissions into ordinary operators, technicians, and managers; and maintains a storage period of ≥180 days for tracing entry and exit records.

[0008] In step S4, the automatic sensor-type phosphate-free cleaning product dispenser has a liquid output of 5-15 mL; the temperature of the thermostatic shower head is 38±2℃; the water pressure of the shoe sole high-pressure cleaner is ≥0.8MPa; the slope of the ground with the guide channel is ≥2%; and the filtration accuracy of the three-stage filtration device is ≤1mm.

[0009] In step S5, the ordinary changing area is equipped with a smart locker with facial recognition and an opening response time of <2s; the clean changing area is equipped with an automatic protective equipment dispensing machine with a dispensing efficiency of ≤10s / person; the air shower channel has an air speed of ≥25m / s and a showering time of 15-45s.

[0010] In step S6, the roughness Ra of the inner wall of the PVDF pipe is ≤0.2μm; the welding strength of the hot-melt welded connection is ≥95% of the pipe body strength; the accuracy of the pressure sensor is ±0.01MPa; and the detection accuracy of the leak detection device is ≤0.01L / min.

[0011] In step S7, the wall thickness of the 316L stainless steel is ≥3mm; the surface roughness Ra after electrolytic polishing is ≤0.4μm; the corner radius of the internal flow channel is ≥5mm; and the conductivity of the 6mm² stainless steel jumper wire is ≥5.8×10⁻⁶. 6 S / m; contact resistance of conductive paste ≤5mΩ; resolution of electrostatic monitoring sensor ±1V.

[0012] In step S8, the thickness of the stainless steel plate is ≥1.5mm; the thickness of the fireproof rock wool is ≥80mm; the overall fire resistance limit is ≥2 hours; the spacing of the pre-embedded fire sprinkler pipes is ≤3m; the response time of the smoke sensor is <10s; and the detection accuracy of the combustible gas and toxic gas sensors is ≤1ppm.

[0013] In step S9, the surface resistance of the antistatic epoxy self-leveling coating is 10. 6 -10 9 Ω, thickness ≥ 3mm; width of slope guide channel ≥ 100mm; filtration accuracy of sewage treatment system ≤ 50μm; in step S10, scanning cycle of PLC controller ≤ 10ms; transmission rate of industrial Ethernet 100Mbps; remote monitoring delay ≤ 2s; response time of fault warning ≤ 3s.

[0014] The beneficial effects of this invention are: 1. This invention provides a PVDF post-polymerization clean space system and operation method that integrates precise environmental control, graded personnel purification, low-pollution material transportation, equipment electrostatic protection, and intelligent safety monitoring. It solves the problems of inaccurate environmental control, high risk of personnel contamination, easy contamination of materials during handling, and weak safety protection in the prior art, and ensures the consistency of PVDF resin product quality and production safety.

[0015] 2. Precise environmental control: Dual cold source technology and three-stage filtration enable simultaneous and precise control of temperature, humidity and cleanliness, meeting the stringent requirements of PVDF production; 3. Highly efficient personnel purification: The integration of facial recognition and smart devices enables rapid verification of personnel identities and standardization of purification processes, reducing the risk of contamination by more than 90%. 4. Reliable material protection: The design of PVDF pipelines and stainless steel equipment is combined with real-time monitoring to prevent contamination during material transportation and processing. 5. Intelligent Safety Protection: The fireproof ceiling is integrated with a gas alarm system, and with the help of intelligent emergency linkage, the accident response time is shortened to 3-5 seconds; 6. System energy saving and efficiency improvement: Radiant heating and variable air volume control reduce energy consumption by 15-20%, and intelligent monitoring reduces manual intervention and improves production efficiency.

[0016] 7. This invention integrates six modules: environmental control, personnel purification, material conveying, equipment protection, safety protection, and ground treatment. Through hardware configurations such as a three-stage filtered air conditioning system, radiant dust-free heating, facial recognition access control, PVDF clean pipelines, stainless steel electrostatic protection equipment, fireproof ceilings, and gas alarms, combined with an intelligent control system's adaptive regulation, tiered purification, full-process monitoring, and risk linkage methods, it achieves high-precision control of the production environment, prevention of personnel contamination sources, low-risk material conveying, and intelligent safety protection. This invention solves the problems of inaccurate environmental control, high risk of personnel contamination, susceptibility to contamination during material handling, and weak safety protection in existing technologies, and is suitable for the industrial production of high-end PVDF resin products.

[0017] 8. This invention achieves coordinated control of temperature, humidity and cleanliness through PID algorithm; a personnel-level purification step that automatically allocates equipment and sets air shower time according to permissions; a material conveying full-process monitoring step that monitors pipeline pressure and equipment static electricity in real time; and a safety risk intelligent linkage step that realizes fire early warning, gas leak emergency response and multi-module linkage. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of the invention.

[0019] A method for constructing a clean space after PVDF polymerization and treatment includes the following steps: S1. An air conditioning unit is installed at the top of the clean space. The air conditioning unit includes a three-stage filtration system of primary, medium and high efficiency filters. It uses chilled water for cooling, electric heating and wet film humidification. It integrates temperature and humidity sensors and a dust particle counter to adjust the temperature, humidity and cleanliness in real time. S2. Install circulating hot water pipes or electric heating films in the ground or walls to achieve radiant heating through closed circulation, avoiding dust generation from air convection, and achieving a heating temperature control accuracy of ±1℃. S3. Install facial recognition access control at the entrance of the clean space, link it with the enterprise ERP system to realize personnel identity verification, and implement hierarchical access control and traceability of entry and exit records; S4. The bathroom is equipped with an automatic sensor-type phosphate-free cleaning product dispenser, a thermostatic shower head, a high-pressure shoe cleaner, and a floor drainage channel and a three-stage filtration device. S5. Divide the changing room into a regular changing area and a clean changing area, and install an air shower in the middle; S6. Cleanroom piping uses PVDF pipes with mirror-polished inner walls, connected by hot-melt welding, and pressure sensors and leak detection devices are installed at the connection points. S7. All equipment in the clean space that comes into contact with materials is made of 316L stainless steel with electrolytic polishing treatment and a design without dead corners in the internal flow channels. At the same time, 6mm² stainless steel jumpers are used between the equipment and the pipes, which are bolted and coated with conductive grease. Static monitoring sensors are installed at the jumper points. S8. The fireproof ceiling adopts a double-layer structure, with an outer layer of stainless steel plate and an inner layer filled with fireproof rock wool; fire sprinkler pipes and smoke sensors are pre-embedded, which automatically start the sprinkler system and cut off the power supply in case of fire. At the same time, combustible gas and toxic gas sensors are evenly distributed on the fireproof ceiling. When the levels exceed the limits, an audible and visual alarm is triggered, and the air conditioning unit is activated to provide full-volume ventilation, increasing the ventilation volume to 150%. S9. The floor of the clean space is coated with an anti-static epoxy self-leveling layer and is equipped with a sloped drainage channel that connects to the sewage treatment system. S10. The above parameters are integrated through a PLC controller and an industrial Ethernet, encompassing five major units: environmental parameter acquisition, personnel management, material conveying monitoring, equipment status monitoring, and safety early warning, to achieve remote monitoring, fault early warning, and multi-module emergency linkage.

[0020] In step S1, the three-stage filtration device has a primary efficiency of G4, a medium efficiency of F8, and a high efficiency of H13; the integrated temperature and humidity sensor has an accuracy of ±0.5℃ / ±2%RH; the dust particle counter can monitor particles larger than 0.3μm; the real-time temperature adjustment range is 20-25℃; the humidity is 40-60%; and the cleanliness is maintained at ISO5 level.

[0021] In step S2, the circulating hot water pipe has a diameter of DN20 and a spacing of 200mm.

[0022] In step S3, the facial recognition access control system incorporates an AI image recognition algorithm; achieves a recognition error rate of <0.1% for personnel identity verification; classifies access permissions into ordinary operators, technicians, and managers; and maintains a storage period of ≥180 days for tracing entry and exit records.

[0023] In step S4, the automatic sensor-type phosphate-free cleaning product dispenser has a liquid output of 5-15 mL; the temperature of the thermostatic shower head is 38±2℃; the water pressure of the shoe sole high-pressure cleaner is ≥0.8MPa; the slope of the ground with the guide channel is ≥2%; and the filtration accuracy of the three-stage filtration device is ≤1mm.

[0024] In step S5, the ordinary changing area is equipped with a smart locker with facial recognition and an opening response time of <2s; the clean changing area is equipped with an automatic protective equipment dispensing machine with a dispensing efficiency of ≤10s / person; the air shower channel has an air speed of ≥25m / s and a showering time of 15-45s.

[0025] In step S6, the roughness Ra of the inner wall of the PVDF pipe is ≤0.2μm; the welding strength of the hot-melt welded connection is ≥95% of the pipe body strength; the accuracy of the pressure sensor is ±0.01MPa; and the detection accuracy of the leak detection device is ≤0.01L / min.

[0026] In step S7, the wall thickness of the 316L stainless steel is ≥3mm; the surface roughness Ra after electrolytic polishing is ≤0.4μm; the corner radius of the internal flow channel is ≥5mm; and the conductivity of the 6mm² stainless steel jumper wire is ≥5.8×10⁻⁶. 6 S / m; contact resistance of conductive paste ≤5mΩ; resolution of electrostatic monitoring sensor ±1V.

[0027] In step S8, the thickness of the stainless steel plate is ≥1.5mm; the thickness of the fireproof rock wool is ≥80mm; the overall fire resistance limit is ≥2 hours; the spacing of the pre-embedded fire sprinkler pipes is ≤3m; the response time of the smoke sensor is <10s; and the detection accuracy of the combustible gas and toxic gas sensors is ≤1ppm.

[0028] In step S9, the surface resistance of the antistatic epoxy self-leveling coating is 10. 6 -10 9 Ω, thickness ≥ 3mm; width of slope guide channel ≥ 100mm; filtration accuracy of sewage treatment system ≤ 50μm; in step S10, scanning cycle of PLC controller ≤ 10ms; transmission rate of industrial Ethernet 100Mbps; remote monitoring delay ≤ 2s; response time of fault warning ≤ 3s.

[0029] This invention operates by the following method: 1. Environmental adaptive control method Based on sensor data, the air conditioning unit automatically adjusts the output of the cold and heat sources and the fan frequency (adjustment accuracy ±5%) through a PID algorithm to achieve coordinated control of temperature, humidity and cleanliness; when the cleanliness decreases, it automatically increases the fan speed to 120% of the rated air volume.

[0030] The dust-free heating system automatically switches heating modes (hot water flow regulation or electric heating film power regulation) based on room temperature sensor data to ensure dust-free heating.

[0031] 3. Personnel-based purification control method After facial recognition access control verification is successful, the system allocates bathroom equipment (such as a dedicated shower stall for management personnel) according to personnel permissions and records the cleaning start time; those who have not completed the cleaning process are prohibited from entering the clean space. After changing clothes, the air shower passage automatically sets the air shower time according to personnel type (30 seconds for ordinary personnel, 45 seconds for technicians), and passage is prohibited if the air shower does not meet the standard.

[0032] 4. Monitoring methods for the entire material conveying process The clean pipeline pressure sensor monitors the delivery pressure in real time. When the pressure fluctuation exceeds ±10%, it automatically triggers a sealing test program. If a leak is detected, delivery is immediately stopped and the leak point is located. The stainless steel jumper wire electrostatic monitoring sensor continuously monitors the equipment potential. When it exceeds ±100V, it automatically activates the grounding enhancement device and pushes a maintenance reminder to the central control system.

[0033] 5. Intelligent linkage method for safety risks When the smoke sensor detects a smoke concentration ≥5%obs / m, it automatically activates the fire sprinkler system (spray intensity ≥8L / min·m²), cuts off the power supply and material conveying pipeline valves, and turns on emergency lighting and evacuation indicators. When the gas alarm detects that the gas concentration reaches the warning value (e.g., hydrogen concentration ≥1%LEL), it immediately alarms and activates ventilation; if the concentration continues to rise, it initiates the emergency shutdown procedure.

[0034] Example 1: Laboratory-grade clean space (50㎡) 1. System parameters Air conditioning unit: air volume 1500m³ / h, cooling capacity 3kW, heating capacity 2kW; Personnel purification: Single-channel access control, 1 shower station, air shower tunnel dimensions 1.2m×0.8m×2m; Material pipeline: DN25 PVDF pipeline, total length 50m; Safety features: 50mm thick rock wool ceiling; gas sensor detection range 0-10ppm.

[0035] 2. Building and Running The air conditioning unit is suspended in the center of the top, and the pipes are welded with sockets; the bathroom and changing room are designed in a compact manner, and the air shower channel is adjusted to a wind speed of 28m / s.

[0036] Personnel entered the space via facial recognition and underwent a 15-second air shower after cleaning. The system maintained a temperature of 22±0.8℃, humidity of 50±3%, and a cleanliness level of ISO 5. During operation, there were no leaks in the pipelines, the equipment's electrostatic potential was <±50V, and the gas sensor response time was 4 seconds.

[0037] Example 2: Medium-sized production workshop (300㎡) 1. System parameters Air conditioning unit: 4 units of 5000m³ / h in parallel, with a cooling capacity of 15kW and a heating capacity of 12kW; Personnel purification: dual-channel access control, 6 shower stalls, air shower tunnel dimensions 2m×1.5m×2m; Material pipeline: DN50 PVDF pipeline, total length 200m; Safety features: 80mm thick rock wool ceiling; gas sensor detection range 0-100ppm.

[0038] 2. Building and Running The air conditioning units are arranged in zones and use variable air volume valves (VAV) to regulate airflow; the bathroom is equipped with a wastewater recycling system and the changing room is equipped with an ultraviolet sterilization device.

[0039] The system achieves a personnel passage efficiency of 20 people / hour, maintains a temperature of 23±0.5℃ and a humidity of 45±2%. During operation, pipeline pressure fluctuations are <±5%, static electricity discharge rate is 100%, smoke sensor response time is 6s, and ventilation volume can be increased to 15000m³ / h in just 10s.

[0040] Example 3: Large-scale industrial cleanroom (1000㎡) 1. System parameters Air conditioning unit: 12 units of 10,000 m³ / h equipment, with a cooling capacity of 50 kW and a heating capacity of 40 kW; Personnel purification: Four-channel access control, 20 shower stalls, air shower tunnel dimensions 4m×3m×2.5m; Material pipeline: DN100 PVDF pipeline, total length 800m; Safety features: 100mm thick rock wool ceiling; gas sensor detection range 0-1000ppm.

[0041] 2. Building and Running The air conditioning unit uses a centralized cold and heat source, and a pressure-independent VAV valve controls the air volume; the ground diversion channel is connected to the central sewage treatment system, and the jumper wire forms a ring grounding network (grounding resistance ≤1Ω).

[0042] Personnel throughput is 50 people / hour, temperature is stable at 24±0.3℃, and humidity is 50±1.5%. During operation, a minor hydrogen leak occurred due to aging of equipment seals. The gas alarm responded within 3 seconds, and the ventilation system switched to full air volume within 5 seconds, preventing any accidents. The overall energy consumption of the system was reduced by 18%.

[0043] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A method for constructing a clean space after PVDF polymerization and treatment, characterized in that, Includes the following steps: S1. An air conditioning unit is installed at the top of the clean space. The air conditioning unit includes a three-stage filtration system of primary, medium and high efficiency filters. It uses chilled water for cooling, electric heating and wet film humidification. It integrates temperature and humidity sensors and a dust particle counter to adjust the temperature, humidity and cleanliness in real time. S2. Install circulating hot water pipes or electric heating films in the ground or walls to achieve radiant heating through closed circulation, avoiding dust generation from air convection, and achieving heating temperature control accuracy of ±1℃. S3. Install facial recognition access control at the entrance of the clean space, link it with the enterprise ERP system to realize personnel identity verification, and implement hierarchical access control and traceability of entry and exit records; S4. The bathroom is equipped with an automatic sensor-type phosphate-free cleaning product dispenser, a thermostatic shower head, a high-pressure shoe cleaner, and a floor drainage channel and a three-stage filtration device. S5. Divide the changing room into a regular changing area and a clean changing area, and install an air shower in the middle; S6. Cleanroom piping uses PVDF pipes with mirror-polished inner walls, connected by hot-melt welding, and pressure sensors and leak detection devices are installed at the connection points. S7. All equipment in the clean space that comes into contact with materials is made of 316L stainless steel with electrolytic polishing treatment and a design without dead corners in the internal flow channels. At the same time, 6mm² stainless steel jumpers are used between the equipment and the pipes, which are bolted and coated with conductive grease. Static monitoring sensors are installed at the jumper points. S8. The fireproof ceiling adopts a double-layer structure, with an outer layer of stainless steel plate and an inner layer filled with fireproof rock wool; fire sprinkler pipes and smoke sensors are pre-embedded, which automatically start the sprinkler system and cut off the power supply in case of fire. At the same time, combustible gas and toxic gas sensors are evenly distributed on the fireproof ceiling. When the levels exceed the limits, an audible and visual alarm is triggered, and the air conditioning unit is activated to provide full-volume ventilation, increasing the ventilation volume to 150%. S9. The floor of the clean space is coated with an anti-static epoxy self-leveling layer and is equipped with a sloped drainage channel that connects to the sewage treatment system. The S10 integrates five major units—environmental parameter acquisition, personnel management, material conveying monitoring, equipment status monitoring, and safety early warning—through a PLC controller and industrial Ethernet, enabling remote monitoring, fault early warning, and multi-module emergency linkage.

2. The method for constructing a clean space after PVDF polymerization and treatment according to claim 1, characterized in that, In step S1, the three-stage filtration device has a primary efficiency of G4, a medium efficiency of F8, and a high efficiency of H13; the integrated temperature and humidity sensor has an accuracy of ±0.5℃ / ±2%RH, the dust particle counter can monitor particles larger than 0.3μm, the real-time temperature adjustment range is 20-25℃, the humidity is 40-60%, and the cleanliness is maintained at ISO5 level.

3. The method for constructing a clean space after PVDF polymerization and treatment according to claim 1, characterized in that, In step S2, the diameter of the circulating hot water pipe is DN20 and the spacing is 200mm.

4. The method for constructing a clean space after PVDF polymerization and treatment according to claim 1, characterized in that, In step S3, the facial recognition access control system incorporates an AI image recognition algorithm; it achieves a recognition error rate of <0.1% for personnel identity verification; it classifies access permissions into ordinary operators, technicians, and managers; and it maintains a storage period of ≥180 days for tracing entry and exit records.

5. The method for constructing a clean space after PVDF polymerization and treatment according to claim 1, characterized in that, In step S4, the automatic sensor-type phosphate-free cleaning product dispenser has a liquid output of 5-15 mL; the temperature of the constant temperature shower head is 38±2℃; the water pressure of the shoe sole high-pressure cleaner is ≥0.8MPa; the slope of the ground with the guide channel is ≥2%; and the filtration accuracy of the three-stage filtration device is ≤1mm.

6. The method for constructing a clean space after PVDF polymerization and treatment according to claim 1, characterized in that, In step S5, the ordinary changing area is equipped with a smart locker with facial recognition and an opening response time of <2s; the clean changing area is equipped with an automatic protective equipment dispenser with a dispensing efficiency of ≤10s / person; the air shower channel has an air speed of ≥25m / s and a showering time of 15-45s.

7. The method for constructing a clean space after PVDF polymerization and treatment according to claim 1, characterized in that, In step S6, the roughness Ra of the inner wall of the PVDF pipe is ≤0.2μm; the welding strength of the hot-melt welded connection is ≥95% of the pipe body strength; the accuracy of the pressure sensor is ±0.01MPa; and the detection accuracy of the leak detection device is ≤0.01L / min.

8. The method for constructing a clean space after PVDF polymerization and treatment according to claim 1, characterized in that, In step S7, the wall thickness of the 316L stainless steel is ≥3mm; the surface roughness Ra after electrolytic polishing is ≤0.4μm; the corner radius of the internal flow channel is ≥5mm; and the conductivity of the 6mm² stainless steel jumper wire is ≥5.8×10⁻⁶. 6 S / m; contact resistance of conductive paste ≤5mΩ; resolution of electrostatic monitoring sensor ±1V.

9. The method for constructing a clean space after PVDF polymerization and treatment according to claim 1, characterized in that, In step S8, the thickness of the stainless steel plate is ≥1.5mm; the thickness of the fireproof rock wool is ≥80mm; the overall fire resistance limit is ≥2 hours; the spacing of the pre-embedded fire sprinkler pipes is ≤3m; the response time of the smoke sensor is <10s; and the detection accuracy of the combustible gas and toxic gas sensors is ≤1ppm.

10. The method for constructing a clean space after PVDF polymerization and treatment according to claim 1, characterized in that, In step S9, the surface resistance of the antistatic epoxy self-leveling coating is 10. 6 -10 9 Ω, thickness ≥ 3mm; width of slope guide channel ≥ 100mm; filtration accuracy of sewage treatment system ≤ 50μm; in step S10, scanning cycle of PLC controller ≤ 10ms; transmission rate of industrial Ethernet 100Mbps; remote monitoring delay ≤ 2s; response time of fault warning ≤ 3s.