The cleaning cycle of the automatic double-opening air shower should be classified based on the type of components, the dust concentration in the usage environment, and the operating frequency of the equipment. The core cleaning/maintenance cycle is as follows: 1. Internal cleaning (wall panels, floor, nozzles Basic cycle: Clean after daily use (wipe with a lint-free cloth to remove surface dust and debris); Enhanced cleaning: Deep wiping every week (targeting dead corners such as nozzle gaps and grooves of door body sealing strips); Special scenarios: If it is applied in industries with a large amount of dust (such as building materials, metal processing) or used more than 10 times a day, it should be changed to cleaning per shift (once in the morning and once in the evening). 2. Pre-filter (Primary filter) Cleaning cycle: Once a week (blow with compressed air or rinse with clean water, dry and reinstall); Replacement threshold: When the number of water washes reaches 3 times or the pressure difference is ≥200Pa, replace directly (no further cleaning is required). Special scenarios: In high-dust environments, reduce the purging to once every three days. Replace in a timely manner when the pressure difference rises rapidly. 3. High-efficiency filter

The core working principle of the automatic winding filter device is to achieve continuous and uninterrupted air filtration through the automatic winding and replacement of filter materials, and to complete automated operation and maintenance in combination with differential pressure feedback control. The specific disassembly is as follows: 1. Basic filtration mechanism (consistent with conventional air filters) When dusty air passes through the air inlet side of the device, the airflow passes through the filter material (usually non-woven fabric, glass fiber mat and other primary/medium efficiency filter materials). Dust particles are intercepted by the fibers of the filter material (interception mechanisms include: inertial collision, diffusion effect, direct interception, electrostatic adsorption, etc.). The filtered clean air is discharged from the air outlet side, completing the basic gas-solid separation. 2. Core automated winding drive system The device is equipped with a built-in drum-type filter material assembly: The filter material is pre-wound on the “original drum” at the top of the device, and a “waste drum” is set at the bottom. One end of the filter material is fixed on the waste drum. When dust accumulates on the surface of the filter material, the filtration resistance gradually increases, and the differential pressure sensor of

The advantages and disadvantages of the dynamic winding type filtration device need to be analyzed in combination with its core design (automatic winding, continuous filtration) and actual application scenarios. The following is a clear summary: I. Core Advantages It enables continuous and uninterrupted filtration without the need to stop the machine to replace filter materials. The automatic winding mechanism completes the filter material update during the filtration process. It is particularly suitable for scenarios such as chemical engineering, coating, and data centers that require 24-hour continuous operation, avoiding production interruption or equipment failure caused by stopping the machine to replace filter materials. Significantly reduce manual operation and maintenance costs by replacing the traditional manual inspection, replacement, and disassembly processes of filters. Only the filter material rolls need to be replaced as a whole at regular intervals (the frequency is much lower than that of a single filter material replacement), reducing human input. It is especially suitable for working conditions with high dust concentration and fast filter material consumption (such as metallurgical and cement workshops). The filtration efficiency is stable and controllable. The pressure difference is taken as the core trigger condition for filter material replacement, avoiding the subjectivity of manual

The core advantage of the ultra-low resistance medium and high efficiency filtration unit is its low air resistance and medium and high efficiency filtration efficiency (typically corresponding to F7-F9 levels). It can not only effectively intercept dust and particles but also reduce the energy consumption of the ventilation system. Therefore, its application fields focus on scenarios where filtration efficiency is required and energy consumption/wind pressure loss needs to be controlled, specifically including HVAC (Heating, Ventilation and Air Conditioning) system Central air conditioning fresh air/return air filtration for commercial buildings (office buildings, shopping malls, hotels) and residential buildings: Replacing traditional medium-efficiency filters, it ensures indoor air cleanliness while reducing the energy consumption of the air conditioning unit’s fan and lowering operating costs. Ventilation systems in industrial plants: such as ventilation and filtration in electronic and mechanical processing workshops, to prevent dust from entering the production area and affecting product quality, while reducing the energy consumption load of the ventilation system. 2. Pretreatment stage of cleanroom Cleanrooms (10,000 grade, 100,000 grade) in the pharmaceutical, electronic, food and other industries: As a pre-filtering unit for high-efficiency filters (HEPA/ULPA), it intercepts large particle dust, extends the service life of high-efficiency filters, and reduces the

The core filtration efficiency of the ultra-low resistance medium and high efficiency filter unit corresponds to the medium and high efficiency grade of the air filter (usually referring to F7 to F9 grades in the industry, and some products can cover the H10 entry-level high efficiency grade). The specific efficiency values are classified according to international standards (such as EN 779, ASHRAE 52.2). The following are the clear indicators: 1. Core grades and Efficiency Range (in accordance with EN 779 standard) F7 grade: For particles with a diameter of ≥1.0μm, the filtration efficiency is 80% to 90% (the gravimetric method efficiency is ≥65%). F8 level: For particles with a diameter of ≥1.0μm, the filtration efficiency is 90% to 95% (the efficiency of the gravimetric method is ≥80%). F9 grade: For particles with a diameter of ≥1.0μm, the filtration efficiency is 95% to 99% (the gravimetric method efficiency is ≥90%). Some high-end ultra-low resistance products can reach H10 level (EN 1822 standard) : for particles with a diameter of ≥0.3μm, the filtration efficiency is ≥95% (sodium flame method), still maintaining low resistance characteristics (initial resistance ≤120Pa). 2. Test Standard Description Efficiency tests typically employ manual dust weighing method (for evaluating coarse

As a key equipment for providing a local high-cleanliness environment, the operational stability and purification effect of laminar flow hoods directly depend on standardized daily maintenance and care. Scientific maintenance and care not only extend the service life of equipment but also ensure that it continuously meets the cleanliness requirements of various application fields. The following are detailed daily maintenance and care methods: I. Daily inspection and cleaning 1. Daily surface cleaning: Every day, use a clean lint-free cloth dipped in neutral detergent to gently wipe the outer shell, operating table surface and observation window of the laminar flow hood. Avoid using highly corrosive cleaning agents to prevent damage to the surface coating and seals of the equipment. After cleaning, wipe it clean with pure water to ensure there is no residue of cleaning agents and to prevent the volatilization of residual substances from contaminating the clean area. 2. Operation status check: Before starting the machine every day, check the power supply of the equipment and the operation status of the fan, and observe whether the fan has any abnormal noise, vibration or other conditions. At the same time, check whether the indicator lights, pressure gauges (if any), and other

The core basis for determining whether the high-efficiency filter of the laminar flow hood needs to be replaced is the pressure difference index, filtration performance, physical condition and the requirements of the usage scenario. Specifically, it can be comprehensively judged from the following dimensions: I. Core Judgment Index: Pressure Difference (The most direct basis) When the operating pressure difference reaches the final resistance threshold marked by the manufacturer (or 1.5 to 2 times the initial pressure difference), it must be replaced. HEPA filters (H13/H14) : The final resistance is usually 400 to 600 Pa (depending on the manufacturer’s parameters). ULPA filters (U15/U16) : The final resistance is usually 600 to 800 Pa. For example, the initial pressure difference of a certain filter is 250 Pa. During operation, the pressure difference rises to 500 Pa (twice the initial value), and it needs to be replaced immediately. The pressure difference often fluctuates A sudden increase in pressure difference within a short period of time (such as an increase of more than 50 Pa within 1 to 2 days) : It is highly likely that the surface of the filter is severely clogged (such as accumulation of dust and oil stains), or there

Daily maintenance regulations for box-type filters Box-type filters (also known as box-type air filters) are core filtration components in industrial clean workshops, central air conditioning systems, and commercial ventilation equipment. Their maintenance effectiveness directly affects filtration efficiency, equipment energy consumption, and service life. The following are the standardized daily maintenance procedures and precautions: I. Daily Inspection (Daily/Shift) Pressure difference monitoring Record the initial and final resistance of the filter every day and compare the data with the rated parameters of the equipment. When the running resistance reaches 1.2 times the final resistance, cleaning or replacement should be arranged in a timely manner. If the resistance rises sharply, it may be due to the filter material being clogged or the seal failing. Immediate inspection is required. Visual inspection Check whether the filter box is deformed, damaged or leaking air, and whether the sealing strip is intact and has not fallen off. Observe whether there is obvious dust accumulation, oil stains or foreign matter blockage on the surface of the filter material. If it is a glass fiber filter material, pay attention to whether there is fiber shedding. Check whether the connection between the filter and the installation frame is firm to

There is no fixed standard for the cleaning cycle of box-type filters. It mainly depends on the dust concentration in the usage environment, the type of filter material, and the operating resistance of the equipment. For specific classification, please refer to the following: Classified by usage environment For low-dust environments such as clean workshops and office Spaces, it is recommended that box-type filters made of synthetic fiber filter materials be cleaned once every 1 to 2 months. It is recommended that the fiberglass filter material be purged once every 1.5 to 2 months. In high-dust environments such as industrial plants, mines, and painting workshops: Synthetic fiber filter materials need to be cleaned once every 2 to 4 weeks. The fiberglass filter material needs to be purged once every 1 to 2 weeks. For scenarios with a lot of cooking fumes and oil stains (such as the kitchen exhaust system) : It is recommended to clean it once every 1 to 2 weeks to prevent oil stains from clogging the pores of the filter material. Classified by filter material type Non-woven fabric/synthetic fiber filter material: It can be washed with water and blown clean. The cleaning cycle should follow the above

Daily Maintenance Regulations for High-Efficiency Exhaust Filter Units The high-efficiency exhaust filtration unit (HEPA/ULPA exhaust filtration device) is a core equipment for controlling the emission of polluted gases and dust, and is widely used in laboratories, clean workshops, medical negative pressure wards and other scenarios. Daily maintenance should follow the principle of “regular inspection – cleaning and maintenance – replacement and upgrade – record archiving” to ensure the operational efficiency of the equipment, extend its service life, and avoid secondary pollution at the same time. I. Daily Inspection (Daily/Shift) Operation status check Observe the operating sound of the fan: There should be no abnormal sounds or severe vibrations. If the noise increases or the fan shakes, stop the machine immediately for inspection. Check the operating parameters: Confirm that the fan current, voltage and air pressure are within the rated range of the equipment, and the exhaust air volume meets the design requirements (which can be monitored with the assistance of a differential pressure gauge and an air volume meter). Check the sealing condition: The sealing strips at the connection points between the filter unit and the box body and the air duct should not fall off or crack to ensure

The core basis for determining whether the filter of the high-efficiency exhaust air filter unit (HEPA/ULPA) needs to be replaced lies in three key indicators: differential pressure monitoring, appearance condition, and service life. A comprehensive judgment should be made in combination with the actual operating scenarios to avoid premature replacement causing waste or over-use leading to pollution and equipment failure. Specifically, the following four types of situations can be precisely determined Compatible with all application scenarios such as industrial clean workshops, laboratories, and medical negative pressure zones I. Core Determination Basis (Priority execution, most accurate) : The pressure difference reaches the final resistance standard This is the most scientific and core indicator for determining the replacement of filters. The resistance change of high-efficiency filters directly reflects the degree of clogging and can be determined without disassembly Basic logic: During the operation of the filter, dust and pollutants adhere to the surface of the filter material, and the resistance will gradually increase. When the final resistance equals 2 to 3 times the initial resistance, the filter material is close to saturation and cannot effectively filter, and it will also increase the load on the fan. Specific operation: Record the reading of

The mother-and-child frame washable filter, with its core advantages of being reusable, easy to maintain, having a high dust holding capacity and low resistance, is mainly applied in ventilation and filtration scenarios that require long-term stable filtration, high maintenance frequency and low cost. It covers three core fields: civil buildings, industrial production and special places. The specific scenarios and adaptation logic are as follows (adapted to the marketing copy of air purification enterprises) Highlight the value of scenario-based scenarios I. Ventilation and Air Conditioning Systems for Civil Buildings (Core Mainstream Scenarios Adaptation logic: In such scenarios, the air volume demand is large, the filtration cycle is long, the long-term operation and maintenance costs need to be controlled, and the maintenance convenience requirement is high. It perfectly matches the core advantages of the washable filter of the mother-and-child frame. Pre-filtering for central air conditioning and fresh air units in large public buildings such as office buildings, shopping malls, hotels, exhibition centers, and stadiums is used to intercept dust, willow catkins, and particulate matter in outdoor fresh air, protecting the back-end fans, coil units, and other equipment. At the same time, it reduces the frequency of filter replacement and lowers the property