Glass fiber bag air filters (also known as glass fiber bag filters) take glass fiber filter material as the core and have the advantages of high temperature resistance, chemical corrosion resistance, high filtration accuracy (mainly medium and high efficiency levels), and large dust holding capacity. They are mainly used in “medium efficiency filtration” or “pre-protection for high efficiency filtration” scenarios in air purification. It is especially suitable for environments with high temperatures, corrosive gases or high cleanliness requirements. Its core application fields can be classified into three major dimensions: “industrial production”, “special manufacturing”, and “public and civilian”, as follows: I. Industrial production field: Withstand harsh environments and ensure compliance with equipment and emissions In industrial scenarios, the core value of fiberglass bag filters lies in achieving efficient filtration and equipment protection in high-temperature, corrosive or high-dust environments, preventing dust from affecting production or exceeding emission standards. Typical applications include: Energy and Power Industry (High-temperature Flue Gas Filtration) Thermal power plants/waste incineration plants: Flue gas filtration at the tail end of boilers and after the denitration system (SCR). Glass fiber can withstand temperatures up to 250-300℃ (with some special models having even higher temperatures), which can intercept fly ash and unburned

Flat plate air filters, with their simple structure, low cost and strong adaptability, are widely used in the “pre-filtration” or “primary filtration” scenarios of air purification. Some medium and high-efficiency models can also be used for specific mid-range purification needs. The core application fields can be classified into three major categories: “civil buildings”, “industrial production” and “special scenarios”, as follows: I. Civil Buildings and Public Spaces: Ensuring Indoor air quality The core demand of such scenarios is to filter out large particles such as suspended dust, hair, and pollen in the air, protect the air conditioning and ventilation system, and improve indoor comfort at the same time. Common application scenarios include: Office and commercial Spaces: Central air conditioning fresh air systems for office buildings, commercial buildings, shopping malls, supermarkets, hotel lobbies, etc. As a pre-filtering device, it can intercept dust, poplar catkins and other substances in the outdoor fresh air, prevent the accumulation of dust and the breeding of bacteria inside the air conditioner, and extend the service life of core components such as fans and coil units. Medical and educational facilities: hospital outpatient halls, corridors of inpatient departments, school classrooms, libraries, etc. It is necessary to filter out dust

The cleaning and maintenance cycle of flat air filters is not fixed and uniform. It needs to be comprehensively judged based on three core factors: the type of filter material, the dust concentration in the usage environment, and the actual resistance change. The following are specific standards and operation suggestions: To discuss cleaning cycles, it is important to note that this applies only to “washable filter materials” as outlined below. Flat plate filters are classified into “washable” and “one-time non-washable” media. For washable filter media, the cleaning cycle must be clearly defined. For one-time filter media (such as some paper filter media and low dust-holding capacity glass fiber filter media), they can be directly replaced when clogged without cleaning. 1. Applicable types of washable filter media The mainstream is polyester synthetic fiber filter media (such as spunbonded polyester and needle-punched polyester). These filter media have high fluveness, are resistant to water and weak alkali, and their filtration performance can be restored by 70% to 90% after cleaning. Usually, they can be washed 2 to 3 times repeatedly. A few nylon mesh filter materials (used for coarse filtration, such as intercepting large particles of dust and hair) can also be cleaned

The maintenance and upkeep cycle of the air shower transfer window should be comprehensively determined based on factors such as usage frequency, application scenarios (such as cleanliness level requirements), and the degree of environmental pollution. The core objective is to ensure its air shower purification effect, sealing performance, and equipment stability, and to prevent cross-contamination in the clean area due to improper maintenance. The following are the industry-wide standards for maintenance and servicing cycles and their specific contents, which can be adjusted according to actual circumstances I. Daily Maintenance (Daily/After Each Use) Frequency: Once before starting work daily + after each use (if the usage frequency is high, such as in the pharmaceutical or semiconductor industries) Core objective: Timely remove surface contaminants to ensure normal basic functions, suitable for all application scenarios (such as food, electronics, medical care). Specific content Appearance and cleaning: Use a clean cloth dipped in neutral detergent (avoid corrosive reagents) to wipe the inner and outer surfaces of the transfer window and the observation window glass to remove dust, stains or residual materials, and prevent dust accumulation and bacterial growth. Sealing performance inspection: After closing the transfer window door, observe whether the sealing rubber strips between

The air shower transfer window is a purification device that combines the functions of air shower dust removal and item transfer. Its core function is to remove the dust particles adhering to the surface of the items through high-speed clean air flow when transferring items between the clean area and the non-clean area (or areas of different cleanliness grades), prevent cross-contamination, and at the same time avoid the disruption of the air pressure balance in the clean area during the transfer process. Its application fields are highly concentrated in industries with strict requirements for cleanliness, sterility and dust control, and can be specifically classified into the following categories: I. Biomedical and Medical Device Industry The control of microorganisms, dust and foreign objects in this industry is directly related to product safety (such as the purity of drugs and the sterility of instruments), and it is one of the core application scenarios of air shower transfer Windows In the field of pharmaceutical production: It is used for material transfer in raw material drug workshops, preparation workshops (such as injections, oral solid dosage forms), and biopharmaceutical workshops (such as vaccine and antibody production). For instance, before transferring externally purchased auxiliary materials and

The performance of high-temperature resistant air filters with separators (core indicators include filtration efficiency, resistance, dust holding capacity, temperature stability, and structural integrity) is influenced by multiple factors. It is not only directly related to the design, material selection, and manufacturing process of the product itself, but also closely associated with the environmental conditions and operating parameters of the actual application scenarios. The following breaks down the key influencing factors from two major dimensions: “product’s own attributes” and “external usage conditions” I. Product inherent attributes: Determine the “upper limit of basic performance” of the filter Such factors are the core design and manufacturing indicators of the filter before it leaves the factory, directly determining its filtration capacity and temperature reliability under rated conditions, and they are the “inherent conditions” of performance. 1. Filter material selection: The core of filtration efficiency and temperature resistance Filter material is the core component for filters to achieve “air purification”. Its material, structure and processing technology directly determine the filtration efficiency, upper limit of temperature resistance and dust holding capacity, and are the primary factors affecting performance. Filter material: It is necessary to meet the dual requirements of “high-temperature resistance” and “filtration efficiency” simultaneously. The

High-temperature resistant air filters with separators (typically with a temperature resistance range of 150℃-300℃, and some special models can be even higher) are widely used in industrial and special scenarios with high temperatures, high humidity or hot air flows due to their stable filtration efficiency (mostly medium to high efficiency, such as F8-H14 levels) and structural tolerance in high-temperature environments. The core is to address the “demand for air purification in high-temperature environments”. The following are its main application fields and specific scenarios, classified and sorted by industry as follows: The first major application area is the industrial manufacturing field. In this context, the core demand is dust and impurity filtration in high-temperature production processes, to protect equipment and maintain product quality. Industrial manufacturing is the primary application scenario for this type of filter, especially in processes involving high-temperature heating, baking, and smelting. It is necessary to filter out contaminants such as dust, fibers, and metal shavings in the hot air flow to prevent equipment damage or product defects. Automobile and parts manufacturing Painting workshop: The intake air filtration of high-temperature drying furnaces (such as drying after body electrophoresis and topcoat drying, with temperatures usually ranging from 120℃ to 220℃)

FFU filters (mainly referring to HEPA or ULPA high-efficiency filters) are core purification components. The timing of their replacement should be determined based on the actual usage conditions. If the filtration efficiency decreases or the resistance is too large, it will directly affect the cleaning effect and equipment energy consumption. The following are the specific methods and bases for judgment: I. Core Judgment Indicators: Resistance Change The resistance of the filter (air pressure) is the most intuitive basis for judgment, which is divided into “initial resistance” and “final resistance” : Initial resistance: The air flow resistance when the filter is brand new (determined by the type and material of the filter. Generally, the initial resistance of HEPA is about 100-200Pa, and that of ULPA is higher). Final resistance: The resistance of the filter when it reaches the designed replacement threshold, usually set at 1.5 to 2 times the initial resistance (for example, if the initial resistance is 150Pa, replacement is required when the final resistance reaches 225 to 300Pa). Operation method Regularly monitor the pressure difference before and after the filter through the built-in differential pressure gauge of the FFU (or an external differential pressure gauge). When the reading reaches

The service life of FFU is not a fixed value and is influenced by multiple factors. Generally, the reasonable service life of the entire equipment is about 5 to 10 years. However, the lifespan of core components varies, and regular maintenance or replacement is required to ensure the continuous and effective operation of the equipment. The following are the specific influencing factors and the lifespan characteristics of each component: 1. The lifespan differences of core components Fan: As the power source of FFU, its lifespan mainly depends on the quality of the motor and the frequency of use. High-quality motors (such as imported brands or high-precision DC motors) can have a lifespan of 5 to 8 years under normal operation (8 to 12 hours per day) and stable load conditions. If it operates at full load for a long time (24 hours without interruption) or the voltage is unstable, it may be shortened to 3 to 5 years. Filters (HEPA/ULPA) : These are consumables with a lifespan much shorter than that of the entire equipment. In environments with high cleanliness levels (such as cleanrooms of Class 10,000 or above), filters generally need to be replaced every 6 to 12 months.

The maintenance and upkeep of box-type filters are key to ensuring their filtration efficiency and extending their service life. Targeted measures should be taken based on the different characteristics of air and liquid types. The following are detailed maintenance and care methods I. Maintenance and Care of Air Box Filters 1. Regular inspection and cleaning Primary/Medium efficiency box-type filter Check once every 1 to 3 months to observe the dust accumulation on the surface of the filter material. If the surface of the filter material turns obviously black, accumulates too much dust, or the air pressure of the ventilation system increases significantly, it is necessary to clean or replace it in time. Compressed air can be used for reverse purging (with pressure controlled at 0.2-0.3MPa to avoid damaging the filter material), or it can be rinsed with clean water (only applicable to washable filter materials, dry after rinsing before installation, and avoid direct sunlight). Note: The primary filter can generally be cleaned 2 to 3 times, while the medium-efficiency filter is recommended to be replaced directly after cleaning 1 to 2 times to avoid clogging of the filter material and affecting the filtration effect. High-efficiency box-type filter Check every 3

Box-type filters, with their diverse types and flexible filtration capabilities, have a wide range of applications, covering two major fields: air purification and liquid filtration. Specifically, they are as follows: I. Application Scenarios of Air Box Filters Air box filters are mainly used to remove dust, particles, microorganisms (tiny living organisms such as bacteria), and other impurities from the air. Depending on how efficiently they filter particles (filtration efficiency refers to the percentage of particles removed from the air by the filter), their application scenarios have different focuses: Primary efficiency box-type filter It is suitable for primary filtration in ventilation systems. This includes the pre-treatment of fresh air in central air conditioning systems, which are found in large shopping malls, office buildings, stadiums, and other public places. It can filter out large dust particles (above 5μm, where μm means micrometers, or one-millionth of a meter) in the air and protect the subsequent medium and high-efficiency filters. Ventilation systems used in agricultural and livestock breeding sites reduce dust, hair and other substances in the air and improve the breeding environment. As a pre-filtering device for ventilation in industrial plants, such as mechanical processing workshops and storage warehouses, it reduces the amount

When replacing the filter material of the aluminum frame combined filter, attention should be paid to the standardization of operation, safety and the guarantee of filtration effect. The following are detailed precautions: I. Preparations Before Replacement System shutdown and safety protection First, turn off the ventilation and air conditioning system where the filter is located. Make sure the machine is shut down before operating to prevent dust from spreading due to air flow or causing accidental contact by personnel. If the filtration environment contains harmful gases or dust (such as in chemical workshops), protective masks and gloves should be worn. If necessary, protective clothing should be worn to prevent pollutants from coming into contact with the skin or being inhaled into the body. Preparation of tools and new filter materials Prepare appropriate disassembly tools (such as screwdrivers, wrenches, snap-on screwdrivers, etc.), and check in advance whether the tools are in good condition to avoid damaging the aluminum frame during operation. Confirm that the specifications (size, filtration grade, material) of the new filter material are consistent with those of the original filter material and meet the system design requirements (such as air volume compatibility) to avoid a decrease in filtration efficiency