What is Medium Efficiency Filtration?

In the world of industrial and commercial ventilation, medium-efficiency filters―classified as F-series filters―play an essential role bridging coarse prefiltration and high-efficiency HEPA systems. As industries in Europe, the Middle East, and Southeast Asia tighten their air quality standards, medium filters have become indispensable across HVAC systems, cleanrooms, and heavy-duty factories.

Types of Medium Filters

Medium filters come in several designs, each addressing specific operating environments:

• Bag type filters (F5, F6, F7, F8, F9): Common in large air handling systems where airflow volume is high.

• Panel type (FB): Compact and easy to install, widely used in commercial buildings.

• Separator type (FS): Designed for systems requiring uniform air distribution.

• Combination type (FV): Modular structures for high-capacity filtration.

How Medium Filters Work

Unlike basic prefilters, F-class media are engineered with gradient density structures. This ensures that as air passes through, coarse particles are trapped in the outer layers, while finer dust is captured deeper inside. In practical terms, these filters can efficiently capture suspended particles sized 1C5 microns, reducing the load on downstream filters and protecting sensitive equipment.

With innovations such as heat-melt bonded fiber media and stable frame designs, modern medium filters minimize leakage risks, offer longer service life, and can even be cleaned and reused in certain settings.

Key Features of Medium Efficiency Filters

1. Capture of 1C5 μm dust and suspended particles.

2. Stable hot-melt construction to reduce leakage.

3. High airflow capacity with low resistance.

4. Large dust-holding volume, ensuring long operational cycles.

5. Available in frameless or framed bag formats.

6. Media options: special nonwoven fabrics or glass fiber.

7. Efficiency range: 60C95% (colorimetric method).

8. Maximum operating conditions: 80°C, 80% relative humidity.

The Role of HICLOVER Automatic Roll Air Filters

While F-class filters are reliable, global industries increasingly adopt HICLOVER Automatic Roll Air Filters as part of multi-stage filtration. These PLC-controlled systems automatically advance filter media when differential pressure rises, cutting down manual maintenance.

For mining workshops in Australia, data centers in Canada, or pharmaceutical plants in the Middle East, this combination―coarse prefilters, medium bag filters, and automatic roll filters―offers an efficient strategy to protect workers, extend equipment lifespan, and maintain compliance with international clean air standards.

---

什么是中效过滤？

在工业和商业通风领域，中效过滤器（F系列）是连接初效预过滤和高效HEPA系统的重要环节。随着欧洲、中东和东南亚等地空气质量标准的收紧，中效过滤器已成为暖通空调系统、洁净室以及大型工厂中不可或缺的部分。

中效过滤器的类型

根据使用环境不同，中效过滤器有多种设计形式：

• 袋式（F5、F6、F7、F8、F9）： 常用于空气量大的大型空调系统。

• 板式（FB）： 结构紧凑，适用于商业建筑。

• 隔板式（FS）： 满足送风均匀的系统需求。

• 组合式（FV）： 模块化设计，适合大风量高效过滤。

中效过滤器的工作原理

与普通初效不同，F系列滤料采用梯度密度设计：外层截留较粗颗粒，内层捕获更细粉尘。这种方式使过滤器能高效拦截直径 1C5 微米的悬浮颗粒，从而降低后端高效过滤器负担，保护设备。

现代中效过滤器通过热熔纤维技术与稳固框架结构，减少破漏风险，延长使用寿命，有些产品甚至可清洗重复使用。

中效过滤器的特点

1. 捕集 1C5 微米粉尘及悬浮物。

2. 热熔工艺，结构稳定，降低破漏风险。

3. 风量大，阻力小。

4. 容尘量高，寿命长。

5. 型式：无框袋式与有框袋式。

6. 滤料：特殊无纺布或玻璃纤维。

7. 效率：60%C95%（比色法）。

8. 使用条件：最高温度 80℃，湿度 80%。

HICLOVER 卷绕式自动过滤器的作用

虽然中效过滤器表现稳定，但全球越来越多企业选择结合 HICLOVER 自动卷绕式过滤器 进行多级过滤。这种PLC智能控制系统在压差升高时自动卷动滤料，减少人工维护。

无论是在澳大利亚矿山车间、加拿大数据中心，还是中东制药工厂，通过组合初效预过滤、中效袋式过滤器和自动卷绕式过滤器，都能高效保护员工健康，延长设备寿命，并满足国际洁净空气标准。

---

Understanding Basic Filtration: From G4 to F9 and Beyond

As industries across the world―from mining in Australia to cleanrooms in Singapore―face stricter requirements for air quality, the role of air filters has become more critical than ever. Modern HVAC and industrial ventilation systems no longer rely on a single filter type; instead, they apply multi-stage solutions ranging from coarse prefilters (G1CG4) to medium-efficiency filters (F5CF9), and finally to high-efficiency HEPA or ULPA systems.

Coarse Filtration (G1CG4, including HICLOVER’s G4 Stainless Steel Filters)

Coarse or “primary” filters such as the G4 grade stainless steel prefilter offered by HICLOVER are widely used in mining camps, power plants, and centralized HVAC systems. These filters remove particles ≥5C10 microns, including dust, fibers, and larger aerosols.

Key Features:

• Frame: water-resistant cardboard or stainless steel mesh.

• Media: synthetic fiber non-woven fabric, nylon mesh, or activated carbon options.

• Typical efficiency: 60C90% for coarse particles.

• Applications: prefiltration in central air conditioning, compressor intakes, and as the first stage before roll-type automatic filters.

Advantages:

• Low resistance with high airflow capacity.

• Extended filter life due to large dust holding capacity.

• Lightweight and easily replaceable, reducing operating costs.

Medium Efficiency Filtration (F5CF9 Bag Filters)

Medium-efficiency air filters―commonly bag-type filters made from synthetic or glass fiber media―form the second stage in multi-layer filtration systems. In industries such as semiconductors, pharmaceuticals, and precision machinery, they protect high-efficiency filters by capturing particles in the 1C10 micron range.

Key Features:

• Frame: aluminum alloy, often modular for international HVAC systems.

• Media: multi-layer synthetic fiber or glass fiber.

• Efficiency: 85C95% for PM10, graded from F5 to F9.

• Structures: bag type, panel type, or separator style.

Advantages:

• Stable performance with high dust-holding capacity.

• Good air permeability, making them ideal for continuous ventilation corridors in industrial plants in Europe and North America.

• Easy installation and compatibility across different systems.

Automatic Roll Air Filters: Bridging Pre-Filtration and Efficiency

While coarse and medium-efficiency filters are widely used, large-scale facilities increasingly adopt Automatic Roll Air Filters for prefiltration. HICLOVER’s PLC-controlled system advances filter media automatically when differential pressure rises, reducing manual maintenance. This is particularly beneficial in data centers in Canada, oil and gas ventilation systems in the Middle East, and industrial laboratories across Africa.

By combining G4 stainless steel prefilters, F5CF9 bag filters, and automatic roll filter systems, operators achieve a layered defense against airborne dust and particles, ensuring compliance, extending equipment life, and improving workplace health.

---

空气过滤基础知识：从G4到F9的应用

随着全球范围内对空气质量的要求日益严格，从澳大利亚矿山到新加坡洁净室，空气过滤器在工业和商业系统中的作用愈发重要。现代空调与工业通风系统已不再依赖单一过滤器，而是普遍采用多级过滤方案，涵盖粗效过滤器（G1CG4）、中效过滤器（F5CF9）以及高效HEPA/ULPA系统。

粗效过滤（G1CG4，含HICLOVER不锈钢G4过滤器）

粗效过滤器，也称为初效过滤器，例如 HICLOVER 提供的 G4不锈钢过滤器，广泛应用于矿区营地、电厂和集中式空调系统。这类过滤器主要拦截≥5C10微米的粉尘、纤维及较大颗粒。

主要特点：

• 外框：防潮纸板或不锈钢框架。

• 滤料：化纤无纺布、尼龙网、活性碳或金属网。

• 过滤效率：60C90%，适用于粗尘过滤。

• 应用领域：中央空调预过滤、大型空压机进气过滤，以及自动卷绕式过滤器的前置保护。

优势：

• 阻力小、过滤面积大。

• 容尘量高、寿命长。

• 重量轻、通用性强，滤料可拆卸更换，降低运行成本。

中效过滤（F5CF9 袋式过滤器）

中效空气过滤器常见为袋式结构，滤料多采用合成纤维或玻璃纤维。在半导体、制药、精密机械等行业中，它们作为高效过滤器的保护层，捕集直径在1C10微米的颗粒。

主要特点：

• 外框：铝合金框架，模块化设计，便于国际化系统兼容。

• 滤料：合成纤维或玻璃纤维，平均效率85C95%。

• 效率等级：F5 至 F9。

• 结构形式：袋式、板式、隔板式。

优势：

• 对1C10微米颗粒有较好捕集效率。

• 性能稳定，透气性好。

• 容尘量大、阻力低，适用于欧洲与北美大型厂房的通风系统。

卷绕式自动空气过滤器：连接预过滤与中效过滤的桥梁

除了粗效与中效过滤器，大型工业场所正逐渐采用 自动卷绕式过滤器。HICLOVER的PLC控制系统能在压差达到设定值时自动卷动滤料，大幅减少人工维护。这一技术在加拿大数据中心、中东油气通风走廊、以及非洲科研实验室中尤其具有优势。

通过组合 G4不锈钢预过滤器、F5CF9袋式过滤器 和 自动卷绕式空气过滤器，可形成多层防护，实现对空气中粉尘和颗粒的高效控制，延长设备寿命，保障员工健康，并满足国际排放与洁净标准。

---

新疆伊宁达达木图镇项目电动卷绕式空气过滤器

 

设备名称：电动卷绕式空气过滤器

过滤风量：8000m3/h

设备数量：4台

发货日期：2025年07月19日

 

自动卷绕式过滤器设备框架材质：优质碳钢喷塑材质，控制系统：PLC自动/手动系统更换滤棉，多台拼接，三相减速电机：100W，滤棉效率：G3，配套安装固定附件。

 

卷帘式全自动粗空气过滤器主要用于鼓风机房进风廊道的空气过滤，卷帘式全自动粗空气过滤器应是装配完整的成套设备，其供货范围应包括上箱、立柱、挡料栏、压料栏、滤材、传动机构、控制箱、电缆及必要的安装附件等。

 

卷帘式全自动粗空气过滤器应采用合成纤维为过滤介质，以过滤器前后压差为传感信号而进行自动控制更换滤材的一种空气除尘设备，当滤料被空气中的灰尘阻塞不能满足使用要求时，应能将信号发送至控制系统，此时传动机构将自动卷绕滤料，将新过滤面平覆在进风口，直到初阻力达到设定值。