Stationary welding fume purifier equipment generally occupies a small space, and has multiple forms such as movable, fixed, and ceiling, and it is very flexible to choose according to needs. Xiaoyang Environmental Protection Company also mass-produces various welding fume vacuum cleaners, especially mobile single-arm and double-arm welding fume vacuum cleaners. Today, Xiaoyang environmental protection discusses three types of suction hoods commonly used in welding fume vacuum cleaners.

The form of fixed Welding fume purifier gas hood: The groove side suction hood is divided into single-sided suction, double-sided suction, peripheral suction and other forms. The cover surface subdivided into the slot side suction cover is divided into three forms: slit, flat seam and reverse seam. Most of its shapes are umbrella-shaped, so it is also called umbrella-shaped cover. The shape of the umbrella can be divided into cold umbrella and hot umbrella.

When choosing a welding fume hood to vacuum, pay attention to three points.

The air inlet hood of the fixed welding fume purifier shall be as close as possible to the pollution source.

Generally speaking, the suction hood of Welding Fume Vacuum Cleaner should be as close as possible to the source of pollution without affecting the technical operation, and try to avoid horizontal airflow drying.

2. A flange should be installed around the exhaust hood of the welding fume vacuum cleaner.

Adding a flange edge around the exhaust pipe can reduce the exhaust volume. The width of the flange is generally between 150 and 200 mm.

The expansion angle of the fixed welding fume purifier air-collecting dust-collecting hood has a great influence on the velocity distribution of the hood and the pressure drop in the hood.

The expansion angle of the outer air-collecting dust hood is 30~60°. When the pressure loss is small, the expansion angle a should be less than (or equal to) 60°; when the expansion angle is large and it is difficult to meet the above requirements, measures such as suction increase should be taken .

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