Getting Started with Primary Filters？
Introduction of primary filter:
The primary filter is suitable for the primary filtration of air-conditioning systems, mainly used to filter dust particles above 5μm. The primary filter has three styles: plate type, folding type and bag type. The outer frame materials include paper frame, aluminum frame, and galvanized iron frame. The filter materials include non-woven fabric, nylon mesh, activated carbon filter material, metal mesh, etc. The net has double-sided sprayed wire mesh and double-sided galvanized wire mesh.
Features of primary filter: low price, light weight, good versatility and compact structure. Mainly used for: pre-filtration of central air conditioning and centralized ventilation systems, pre-filtration of large air compressors, clean air return systems, pre-filtration of local high-efficiency filtration devices, high-temperature air filters, stainless steel outer frame, high temperature resistance 250-300 ℃ Filtration efficiency.
Filters of this efficiency are commonly used in primary filtration of air conditioning and ventilation systems, and are also suitable for simple air conditioning and ventilation systems that only require primary filtration.
G series coarse air filter is divided into eight varieties, namely: G1, G2, G3, G4, GN (nylon mesh filter), GH (metal mesh filter), GC (activated carbon panel air filter manufacturer), GT (high temperature resistant filter) coarse filter).
Primary filter structure
The outer frame of the filter is composed of a solid waterproof plate, which is used to fix the folded filter material. The diagonal design of the outer frame can provide a large filter area and make the inner filter material tightly adhere to the outer frame. The surrounding of the filter is bonded to the outer frame with special professional adhesive glue, which can prevent air leakage or damage caused by wind resistance pressure.
The outer frame of the disposable paper frame filter is generally divided into a general cardboard frame and a high-strength touch-cut cardboard, and the filter element is a pleated fiber filter material lined with a single-sided wire mesh. Beautiful appearance. Sturdy and durable construction. Generally, the outer frame of cardboard is used to manufacture non-standard filters, and can be used for the production of filters of any size. It has high strength and is not suitable for deformation. High-strength felt and cardboard is used to manufacture standard-sized filters, which are characterized by high specification accuracy and low cost. If imported surface fiber or synthetic fiber filter material is used, its various performance indicators can reach or exceed the same production as imported filter.
The filter material is packed into high-strength cardboard in a folded form, and the windward area is increased. The dust particles in the inflowing air are effectively blocked between pleats and pleats by the filter material. Clean air flows out evenly from the other side, so the airflow through the filter is smooth and even. Depending on the filter material, the particle size it blocks varies from 0.5μm to 5μm, and the filtration efficiency is also different!