There is no fixed standard for the cleaning frequency of the mother and child frame washable filter. It mainly depends on three key factors: the concentration of pollutants in the usage environment, the operating load of the equipment, and the change in the filtration pressure difference. Specifically, it can be classified and referred to according to the following scenarios: High-pollution industrial scenarios It is suitable for environments with high concentrations of dust and particulate matter such as painting workshops, chemical raw material workshops, and ventilation systems for mines, where the filters are prone to rapid dust accumulation. Cleaning frequency: once every 1 to 2 weeks Supplementary judgment: When the pressure difference before and after the filter reaches 1.5 to 2 times the initial pressure difference, it needs to be cleaned immediately to avoid blockage and affect ventilation efficiency. Commercial medium-pollution scenarios It is applicable to places with dense populations but moderate pollutant concentrations such as office buildings, shopping malls, general departments of hospitals, and hotels. Cleaning frequency: Once every 3 to 4 weeks Supplementary judgment: It can be combined with the operating status of the central air conditioning system. If the air volume at the air outlet drops significantly or

A clean booth is a local clean space that can be quickly set up and flexibly deployed. It achieves air circulation purification through fan filter units (FFUs) and can meet the cleanliness requirements of Class 100 to 100,000. It is widely used in industry scenarios with clear standards for environmental cleanliness. The core application areas are as follows: The electronic semiconductor industry This is the most core application field of the clean booth. The production and inspection processes of semiconductor chips, integrated circuits, PCB circuit boards, liquid crystal displays (LCD/LED), and photovoltaic modules are extremely sensitive to dust and static electricity. The adhesion of tiny particles can directly lead to product failure. The clean booth can be used as a local clean area on the production line to ensure that the environment for key processes such as photolithography, packaging, and surface mount technology meets the standards. The biomedical and medical device industry Pharmaceutical production: It is used in the ingredient preparation, filling and sampling processes of sterile preparations (such as injections and vaccines), as well as in the purification treatment of traditional Chinese medicine extracts to prevent microbial contamination. Medical devices: The assembly and post-sterilization treatment of surgical instruments and

There is no fixed standard for the service life of a clean booth. It mainly depends on three factors: the quality of core components, the usage environment, and the maintenance frequency. Under normal circumstances, the service life range is as follows: Ordinary configuration clean booth: Mainly composed of domestic economical fan filter units (FFU) and color steel plate frames, under general clean environment (such as food packaging, ordinary electronic assembly) and proper maintenance conditions, its service life is approximately 5 to 8 years. High-end configuration clean booth: It adopts imported FFU, high-quality aluminum alloy frame and efficient sealing materials, and is applied in high-cleanliness requirement scenarios (such as semiconductors and biomedicine). It strictly follows maintenance regulations and has a service life of up to 10 to 15 years. Key factors affecting service life The core component loss FFU is the core of the clean booth, and the aging speed of its fan motor directly determines the overall lifespan. Poor-quality motors may experience increased noise and reduced air volume after continuous operation for 2 to 3 years. High-quality variable-frequency motors can operate stably for 8 to 10 years at reasonable start-stop frequencies. In addition, high-efficiency filters (HEPA/ULPA) are consumables and need

I. Core Service Life of Negative Pressure Weighing Chamber (Industry General Standard) The conventional design service life is 8 to 12 years. The design life of core components (fans, filters, control systems) is 5 to 8 years. They need to be replaced regularly to maintain performance. If the maintenance is in place and the working conditions are good, the entire equipment can be extended for 10 to 15 years (only for compliant operation and maintenance scenarios). Ii. Key Influencing Factors (Ranked by Influence Weight) Core component wear and tear (weight 40%) Fan system: The wear of the motor bearings and impellers of the centrifugal fan/fan filter unit (FFU) directly affects the stability of negative pressure (under normal operating conditions, they need to be replaced every 5 to 8 years; frequent starts and stops or high-load operation will shorten the period to 3 to 5 years). Filtration system Primary filter (G4) : Replace every 6 to 12 months. If not replaced in time, it will cause overload of medium and high-efficiency filters, accelerating the clogging of high-efficiency filters (HEPA/ULPA) (the normal service life of high-efficiency filters is 1 to 3 years, and overload use will shorten it to 6 to 18

The negative pressure weighing chamber is a core specialized equipment in the raw material weighing and batching processes of pharmaceutical factories. Its functions revolve around three core demands: personnel safety, material purity, and environmental cleanliness. It is a key facility to ensure the compliance of drug production and product quality. Its specific functions are as follows: When the negative pressure weighing chamber is in operation, it maintains a negative pressure relative to the outside inside, and the airflow will flow unidirectionally from the outside to the inside to ensure the safety of the operators. When operators weigh and repackage highly active, toxic and allergenic active pharmaceutical ingredients, this air flow organization can effectively prevent harmful substances such as dust and aerosols from leaking into the production workshop, avoid inhalation or skin contact by operators, and reduce occupational health risks. The negative pressure weighing chamber is equipped with a high-efficiency filtration system (HEPA/ULPA) to ensure the purity of materials and the quality of drugs. The air entering the chamber is strictly filtered to remove particles, microorganisms and other pollutants in the air. On the one hand, it prevents external impurities from contaminating the active pharmaceutical ingredients in the weighing process and

High-efficiency exhaust devices refer to exhaust equipment with high ventilation efficiency, low energy consumption, and the ability to precisely control the direction and volume of air flow. Their core function is to quickly expel stale air, harmful gases, dust, and residual heat within a local or overall space, ensuring the safety and comfort of the air environment. Its application fields cover multiple sectors such as industrial production, medical and health care, commercial buildings, civil residences, and special scenarios. The specific classification and application scenarios are as follows: The field of industrial production This is the core application scenario of the high-efficiency exhaust device, mainly used to solve the problem of pollutant emissions generated in industrial processes, ensuring production safety and personnel health. Heavy industry and manufacturing: In metallurgical, chemical, and mechanical processing workshops, it is used to discharge harmful media such as welding fumes, metal dust, chemical waste gas, and volatile paint (VOCs). In casting and forging workshops, high-temperature waste heat and dust can be quickly discharged, reducing the workshop temperature and improving the working environment. In the electronic semiconductor industry: In clean workshops for chip manufacturing and circuit board production, a fresh air system is used in conjunction to

The core of the daily maintenance of high-efficiency exhaust devices is to ensure smooth airflow, effective filtration, and low-consumption operation of the equipment, while avoiding problems such as reduced exhaust efficiency, increased noise, and safety hazards caused by dust accumulation and component aging. The following is elaborated in the order of “core maintenance modules + cycles + key operation points”, taking into account both universality and industry adaptability: I. Basic Maintenance (Daily/Weekly, Operable by All staff) Operation status inspection (Daily) Check the operating sound of the fan: no abnormal sounds or vibrations, stable fan speed, and no jamming. Confirm the exhaust effect: By sensing the wind speed at the air outlet and the speed at which indoor odors/smoke are expelled, determine whether the exhaust is normal. Check the instrument data: If air volume, air pressure and temperature and humidity meters are equipped, record the data to ensure it is within the rated range (deviations need to be checked in time). External cleaning (weekly) Wipe the fan casing and control panel to remove surface dust and oil stains (in industrial scenarios, focus on cleaning accumulated oil stains). Clear debris from the air inlet and outlet: Remove obstructions from the air outlet

The supply air ceiling of the operating room is the core component of the air purification system in the clean operating room, directly affecting the cleanliness of the operating room and the safety of the surgical environment. Its daily maintenance should follow the principles of precision, standardization and regularity. The specific maintenance contents and procedures are as follows: I. Daily Inspection (Daily/Before and After Each Surgery) Visual inspection Check whether the ceiling panel for the supply air is flat, free from deformation and damage, and whether the sealing strips at the connection points are intact to prevent air leakage and affect the air flow organization. Check the cleanliness of the panel surface and promptly wipe off dust and stains with medical non-woven fabric dipped in neutral detergent to prevent accumulated dust from falling and contaminating the surgical area. Operation status check After turning on the purification system, observe whether the air velocity at the air outlet of the supply ceiling is uniform and there is no obvious abnormal noise (such as abnormal noise from the fan or panel vibration noise). Check the reading of the differential pressure gauge to ensure that the pressure difference between the operating room and the

The replacement cycle of the filters on the supply air ceiling of the operating room should be comprehensively determined based on the type of filter, the usage frequency of the operating room, the environmental dust load and the pressure difference monitoring data. The specific standards are as follows: Primary filter The regular replacement cycle is 1 to 3 months. If the average daily number of surgeries in the operating room is high, the amount of dust in the surrounding environment is large, or the reading of the differential pressure gauge reaches twice the initial differential pressure, it needs to be replaced immediately. After each operation, large particles of dust on the surface can be cleaned with a vacuum cleaner to extend the service life. Medium-efficiency filter The regular replacement cycle is 3 to 6 months. As a “pre-protection” for high-efficiency filters, it needs to be replaced in advance if there is a significant decrease in air volume, severe dust accumulation at the air outlet, or excessive pressure difference. High-efficiency filter The regular replacement cycle is 1 to 2 years. This is the core component of air purification in clean operating rooms, and the pressure difference monitoring data serves as the

Laminar flow sampling carts (also known as clean sampling carts) are mobile local clean environment equipment. Their core is to generate unidirectional clean air flow through a high-efficiency filtration system, creating a sterile and dust-free clean space in the sampling operation area. This prevents samples from being contaminated by environmental microorganisms and particles, while also protecting the safety of operators and the environment. Its application fields are highly focused on scenarios with extremely high requirements for sample purity, experimental accuracy, and production compliance. The core application fields and detailed scenarios are as follows: I. Pharmaceutical and Biopharmaceutical Industry (Core Application Areas) As a key piece of equipment for GMP compliance requirements in the pharmaceutical industry, laminar flow sampling vehicles are an “essential tool” in the production and inspection processes of drugs, mainly used to prevent deviations in inspection results or batch nonconformity of products caused by sample contamination. Pharmaceutical production process: Sampling of raw materials, intermediates and finished products (such as raw material powder, oral liquid preparations, tablets/capsules, sterile injections, etc.) to ensure that the sampling process complies with GMP (Good Manufacturing Practice) requirements and prevent environmental impurities from mixing into the samples. Biopharmaceutical process: Sampling of biological reagents, vaccines,

The core working logic of air purification and disinfection machines is “first purify particulate matter and harmful gases, and then kill microorganisms and bacteria”. Different devices will combine multiple technologies to achieve functions. The mainstream working principles can be divided into two major categories: purification technology and disinfection technology, as follows: I. Core Purification Technology (Removal of Particulate Matter and Harmful Gases) This type of technology mainly addresses common air pollution problems such as dust, hair, formaldehyde and odors. High-efficiency filtration technology (HEPA filter filtration) is the core technology of air purification, with the mainstream being H13/H14 grade HEPA filters. Its filter screen is made of superfine glass fibers interwoven, with pore diameters as low as 0.3 microns. Through interception, inertial collision, diffusion adsorption and other effects, it can capture fine particles such as PM2.5, pollen, dust mite excrement and pet dander in the air, and the filtration efficiency can reach over 99.97%. Filters are usually of composite structure, from the outside to the inside, they are coarse filters (for intercepting hair and large dust particles), HEPA filters (for intercepting fine particles), and activated carbon filters (for adsorbing harmful gases). Activated carbon adsorption technology: Activated carbon has a large number

The air purification and disinfection machine is a device that integrates air purification and sterilization and disinfection functions. With its comprehensive treatment capabilities for particulate matter, harmful gases, and microorganisms, it is widely used in multiple fields such as medical and health care, public buildings, industrial production, and family life. The specific classification and application scenarios are as follows 1. Medical and health care field This is one of the core application scenarios of air purification and disinfection machines, with extremely high requirements for the sterilization efficiency and cleanliness level of the equipment. Hospital departments: operating rooms, icus, neonatal wards, fever clinics, infectious disease wards, etc., can effectively remove bacteria, viruses (such as influenza virus, novel coronavirus), and fungal spores in the air, reducing the risk of cross-infection. General wards and outpatient clinics are used to improve the medical environment and reduce the infection probability for both patients and medical staff. Affiliated areas of medical institutions: pharmacies, laboratories, sterile wards, and temporary storage rooms for medical waste, to prevent the spread of bacteria and contamination of drugs and samples. Other medical scenarios: community clinics, dental clinics, and vaccination sites provide clean and safe treatment Spaces for both medical staff and