Product Details
1. Product Introduction
Shenzhen Mingyang Purification Technology Co., Ltd. has been deeply engaged in the air purification field for over ten years, specializing in the research and development and production of pre-filters, medium-efficiency filters, high-efficiency filters, and air conditioning filter nets. The products are widely used in air purification processes in central air conditioning systems, clean rooms, industrial plants, and more. The mother-and-child frame pre-filter is the company's core pre-filter product designed for harsh working conditions and high dust holding capacity requirements, making it an optimal choice for pre-filtration in ventilation and air conditioning systems.
Mingyang's APP mother-and-child frame pre-filter adopts a detachable plate-type aluminum alloy frame as the basic structure, paired with aluminum alloy corners or plastic right angles for reinforcement. The core support is a φ4.0mm thick galvanized iron wire mother-and-child frame mesh with added reinforcement ribs. The filter material is made of high-quality non-woven fabric and polyester synthetic fibers, using air pressure adsorption as the filtration principle, achieving a filtration efficiency of G3 (80%) and G4 (90%) dual-grade standards, primarily filtering out large particles of dust, hair, fibers, and other impurities ≥5μm in the air.
The product is designed for poor working environments, with a robust and impact-resistant overall structure that is not easily deformed. The detachable outer frame allows for individual replacement of the filter material, and the frame can be reused. It achieves a large dust holding capacity while ensuring low airflow resistance, effectively extending the service life of downstream medium-efficiency filters. It is suitable for centralized ventilation and air conditioning systems in various large buildings, industrial plants, and clean rooms, and supports custom specifications to fully meet different customers' personalized filtration needs.
2. Core product features
- 2.1 High-strength frame, resistant to harsh working conditions: Adopting a detachable plate-type aluminum alloy frame, combined with aluminum alloy corners or plastic right angles for dual fixation, the structure is robust and stable, effectively preventing the filter from deforming or being damaged even in poor working environments with vibrations, high wind speeds, and high dust concentrations, ensuring long-term stable operation.
- 2.2 Detachable design for cost reduction through recycling: The outer frame adopts a modular detachable structure, allowing for the replacement of only the filter core once the filter material reaches its lifespan. The aluminum alloy frame and mother-and-child frame mesh can be reused, significantly reducing consumable procurement costs, aligning with green and environmentally friendly usage concepts, and lowering long-term operational expenses.
- 2.3 Low resistance and high dust holding capacity, enhancing ventilation efficiency: The mother-and-child frame filter mesh is equipped with special reinforcement ribs, optimizing the airflow passage, effectively reducing air resistance while enhancing structural robustness, and the fluffy filter material structure combined with reasonable frame layout achieves a large dust holding capacity, reducing cleaning and replacement frequency, and extending maintenance cycles.
- 2.4 High-quality filter material, washable and durable with a long lifespan: The filter material is made of high-tensile non-woven fabric and polyester synthetic fibers, possessing good washability and tensile resistance, allowing for repeated cleaning and reuse. Under normal maintenance, its lifespan far exceeds that of ordinary pre-filter materials, and its filtration performance remains stable without significant degradation.
- 2.5 Gradual filtration to protect downstream filtration equipment: The filter material adopts a fluffy and gradually dense fiber structure design, efficiently intercepting large particles of impurities in the air, preventing them from entering subsequent medium and high-efficiency filters and causing clogging, effectively extending the service life of downstream high-precision filtration equipment and lowering the maintenance costs of the entire air purification system.
- 2.6 Standardized dimensions for wide installation compatibility: Using industry-standard external frame dimensions, it can directly connect to various central air conditioning and centralized ventilation equipment filter segment interfaces, requiring no additional equipment modifications for installation. The disassembly and replacement process is simple and can be operated by one person, compatible with different brands and models of ventilation and air conditioning systems.
3. Product application range
3.1 Large Civil Building Ventilation and Air Conditioning Systems
Suitable for centralized air conditioning and ventilation systems in large civil buildings such as offices, conference rooms, hospitals, shopping malls, airports, high-speed rail stations, and sports venues for pre-filtration, effectively intercepting large particles of impurities such as dust, hair, and fibers in the air, improving indoor air cleanliness, while protecting the internal heat exchange equipment of air conditioning systems and reducing efficiency loss due to dust accumulation.
3.2 General Industrial Workshop Ventilation Pre-Filtering
Suitable for pre-filtration in centralized ventilation and air conditioning systems of ordinary industrial plants such as mechanical processing, textiles, and hardware. The high-strength frame can withstand vibrations from workshop equipment and high wind speed impacts in harsh working conditions. The high dust holding capacity feature can reduce the hassle of frequent maintenance, effectively intercepting industrial dust and improving the working environment in workshops while protecting ventilation equipment.
3.3 Pre-filtering for Clean Rooms
As pre-filtration equipment for centralized ventilation and air conditioning systems in clean rooms of industries such as electronics, pharmaceuticals, food, and optics, it effectively filters large particles of dust from the air, reducing the burden on subsequent medium and high-efficiency filtration stages, slowing down the clogging speed of high-precision filters, ensuring the cleanliness level of the clean room, and lowering the overall operational and maintenance costs of the clean room filtration system.
4. Product technical parameters
4.1 Basic parameters
| Project | Detailed Specifications |
|---|---|
| Product Name | Mother-Daughter Frame Pre-Filter |
| Brand | Mingyang |
| Model Series | APP mother-and-child frame pre-filter series |
| Frame material | Aluminum alloy profile (detachable panel type) |
| Support structure | φ4.0mm thick galvanized iron wire mother and child frame mesh + reinforcement ribs |
| Fixed accessories | Aluminum alloy corner/plastic right angle |
| Filter media type | Non-woven fabric, polyester synthetic fiber |
| Filtration principle | Air pressure adsorption method |
| Weight-based efficiency | G3（80%）、G4（90%） |
| Applicable filtration objects | Air purification, mainly filtering particles ≥5μm such as dust, hair, fibers, etc. |
| Initial resistance at rated air volume | ≤85Pa (G3 level) / ≤110Pa (G4 level) |
| Product features | Sturdy structure, detachable, low resistance, high dust holding capacity, washable, reusable frame |
| Quality standards | GB/T 14295-2019 |
| Applicable Fields | Pre-filtration for ventilation and air conditioning systems in civil buildings, industrial plants, clean rooms, etc. |
4.2 APP Mother and Child Frame Series Common Specifications Rated Parameters
| Model | Specifications Class | Dimensions W×H×D (mm) | Filter Area (m²) | Rated Airflow (m³/h) | Initial resistance 70% (Pa) | Initial resistance 100% (Pa) |
|---|---|---|---|---|---|---|
| APP 6605-G3 | G3 | 595×595×46 | 0.6 | 3600 | 65 | 85 |
| APP 5605-G3 | G3 | 495×595×46 | 0.5 | 3000 | 65 | 85 |
| APP 5505-G3 | G3 | 495×495×46 | 0.42 | 2500 | 65 | 85 |
| APP 3605-G3 | G3 | 290×595×46 | 0.3 | 1800 | 65 | 85 |
| APP 6605-G4 | G4 | 595×595×46 | 0.6 | 3600 | 70 | 110 |
| APP 5605-G4 | G4 | 495×595×46 | 0.5 | 3000 | 70 | 110 |
| APP 5505-G4 | G4 | 495×495×46 | 0.42 | 2500 | 70 | 110 |
| APP 3605-G4 | G4 | 290×595×46 | 0.3 | 1800 | 70 | 110 |
Note: The above are only some commonly used specifications and models. Shenzhen Mingyang Purification Technology Co., Ltd. can customize various non-standard specifications of mother-and-child frame pre-filters according to the customer's actual installation space, air volume requirements, and working conditions. Customized products also adhere to the national execution standard GB/T 14295-2019 and undergo strict resistance and efficiency testing before leaving the factory to ensure filtration performance and operational stability.
5. Frequently asked questions
5.1 How should the filter material of the parent-child frame pre-filter be cleaned and replaced?
The filter material can be gently rinsed in the direction of the fiber with low-pressure clean water (water pressure ≤0.3MPa) or compressed air (air pressure ≤0.4MPa). It can be combined with neutral detergents to remove stubborn stains. Reverse rinsing, high-pressure water/air impact, and the use of strong acids or strong alkalis are prohibited. After cleaning, place it in a cool, ventilated area to air dry naturally, avoiding direct sunlight and high-temperature drying. If the filter material is damaged, deformed, or if the filtration efficiency significantly decreases after 3-5 cleanings, the aluminum alloy corners/plastic right angles can be disassembled to replace the filter core individually, and the frame can continue to be reused if undamaged.
How to select the G3 and G4 grade sub-frame pre-filter?
Select models based on cleanliness requirements of the usage scenario and protection requirements for downstream filtration equipment: G3 grade offers high cost-effectiveness, suitable for scenarios with high dust content and general filtration precision requirements, such as ordinary industrial plants, shopping malls, airports, and other civil building ventilation pre-filtration; G4 grade offers higher filtration precision, suitable for scenarios with slightly higher pre-filtration requirements, such as hospitals, food processing workshops, and clean rooms, effectively intercepting impurities and better protecting downstream medium and high-efficiency filters.
5.3 What is the core difference between the mother-and-child frame pre-filter and the ordinary plate-type pre-filter?
The core differences are reflected in the structure and applicable working conditions: The mother-and-child frame pre-filter is equipped with a φ4.0mm thick galvanized iron wire mother-and-child frame mesh + reinforcement ribs, making the structure more robust, with strong impact resistance and deformation resistance, suitable for harsh conditions in industrial plants, and designed to be detachable for frame reuse; the ordinary plate-type pre-filter lacks mother-and-child frame support, has a simple structure, and is suitable for milder conditions in civil buildings, often being a disposable overall structure, resulting in higher long-term usage costs. Additionally, the mother-and-child frame version has a larger dust holding capacity, effectively extending maintenance intervals.
5.4 How should the maintenance cycle for the parent-child frame pre-filter be determined?
Regular maintenance cycles should be adjusted based on the dust concentration of the usage environment: For ordinary civil building scenarios, it is recommended to clean once every 1-2 months; for industrial plants with higher dust concentrations, it is recommended to clean once every 15-30 days. When the pressure difference before and after the filter reaches twice the initial resistance, immediate cleaning or replacement of the filter material is required. Under normal use, the filter material has a lifespan of approximately 6-12 months, and the replacement cycle can be shortened in harsh working conditions.
6. Brand and service guarantee
Shenzhen Mingyang Purification Technology Co., Ltd. was established in 2008 and has seventeen years of experience in the research and development and production of air filtration equipment. It is a professional enterprise certified by both ISO9001 quality management system and ISO14001 environmental management system. The company is equipped with advanced automated production equipment and professional testing equipment, and all products have passed national authoritative testing. The mother-and-child frame pre-filter has undergone rigorous simulated testing under harsh working conditions, ensuring reliable quality.
