Fixed Filter Frame for Panel and Bag Filters - China Suppliers & Factory, Galvanized Steel, Aluminum, Stainless Steel
Application Area
🌏 Widely used in different kinds of Panel type pre-filter and Bag filter holding frame.
Main Characteristics
- 🔒 Fixing and Supporting: Provides stable support for the air filter, preventing it from shaking, deforming, or detaching under airflow impact.
- 🧳 Ensuring Sealing: Prevents unfiltered air from "short-circuiting" through gaps between the filter edges and the frame, ensuring all air passes through the filter media.
- 🔧 Facilitating Installation and Replacement: A well-designed installation frame should allow for simple and quick installation and removal of the filter, reducing maintenance difficulty and time.
- 🛡 Protecting the Filter: Prevents damage to the filter edges during handling and installation.
Panel-Type / Sheet Metal Holding Frame
This is the most common type, typically made of metal (such as galvanized steel sheet, aluminum profile) or plastic.
⚡ Key Features
- ✓ Simple structure and low cost.
- ✓ Usually used with panel filters (primary, medium efficiency).
- ✓ Installation is mostly done by sliding the filter into a slot from one side, or securing it via clamping strips or magnetic strips.
Common Designs
- Slot-Type: The frame has guide slots; the filter is inserted directly.
- Clamping Strip / Clip-Type: After placing the filter, it is pressed tightly against the frame using metal clamping strips or plastic clips.
- Magnetic-Type: The frame is equipped with magnetic strips, allowing it to be directly attached to a metal air handling unit or air vent for easy removal.
Bag Filter Holding Frame
Specifically designed for installing bag filters.
⚡ Key Features
- ✓ The frame has multiple openings, each equipped with a set of clamping devices (such as spring clips, cam lock handles).
- ✓ During installation, the flange of the bag filter is placed into the opening, and then the lock handle is actuated to press and seal it tightly.
- ✓ Excellent sealing; replacing a single bag does not affect the others.
Common Designs
- Single-Bag / Multi-Bag Holding Frame: Depending on airflow requirements, one frame can hold from 1 to multiple bag filters.
- Cam Lock Handle: The most common fastening method, offering effortless operation and reliable sealing.
Frequently Asked Questions
Q
What is the main purpose of a fixed filter holding frame?
A fixed filter holding frame serves to securely support and seal air filters — including panel filters and bag filters — within an air handling system. It prevents the filter from shaking, deforming, or allowing unfiltered air to bypass through gaps, ensuring full filtration efficiency.
Q
What materials are commonly used to manufacture filter holding frames?
Filter holding frames are most commonly made from galvanized steel sheet, aluminum profile, or durable plastic. The choice of material depends on the application environment, required strength, corrosion resistance, and cost considerations.
Q
What is the difference between a panel-type holding frame and a bag filter holding frame?
A panel-type holding frame is designed for flat panel filters (primary or medium efficiency) and typically uses slot, clamping strip, or magnetic designs for installation. A bag filter holding frame has multiple openings with dedicated clamping devices (such as cam lock handles or spring clips) specifically engineered to seat and seal the flanged edges of bag filters.
Q
How does a magnetic-type filter frame work?
A magnetic-type filter frame is equipped with built-in magnetic strips along its edges. This allows the frame — along with the installed filter — to attach directly to metal surfaces such as air handling units or metal air vents without the need for tools. This design makes filter removal and replacement extremely quick and convenient.
Q
Can a single bag filter holding frame accommodate multiple bag filters?
Yes. Bag filter holding frames are available in single-bag or multi-bag configurations. Depending on the airflow requirements of the system, one frame can be designed to hold anywhere from 1 to multiple bag filters simultaneously, with each bag sealed and secured independently.
Q
Why is proper sealing of the filter holding frame so important?
Proper sealing is critical to prevent air "short-circuiting" — a condition where unfiltered air bypasses the filter media through gaps between the filter edge and the frame. Without an airtight seal, contaminated air can pass directly into the clean air stream, reducing filtration effectiveness and potentially compromising the downstream environment or equipment.