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When the air supply outlet is opened, the air outlet shall be removed. The sampling shall collect all dust accumulated on the surface of the duct in a certain area and take it out of the duct in good condition. The inspection equipment, inspection and analysis method of dust accumulation in ventilation duct are the same as those after cleaning. Detection method of total number of microorganisms on the inner surface of ventilation duct and bacteria on the inner surface of air duct in central air conditioning ventilation system

1.對于矩形風管的直管段，無論是用同一塊板連接還是用幾塊板拼接，表面應光滑，角線應平直。組裝前，應清除板材切割面上的切割粉末、灰塵和雜物。

1. For the straight section of rectangular duct, whether it is connected by the same plate or spliced by several plates, the surface shall be smooth and the corner line shall be straight. Before assembly, the cutting powder, dust and debris on the cutting surface of the plate shall be removed.

2.管段組合后，外部接頭應修整45度，板的外表面應用鋁箔帶密封。每邊寬度不小于20毫米，用角尺和鋼帶檢查并調整垂直度和角線，偏差，符合規范要求。

2. After the pipe section is assembled, the external joint shall be trimmed for 45 degrees, and the outer surface of the plate shall be sealed with aluminum foil. The width of each side shall not be less than 20 mm. The perpendicularity and angle line shall be checked and adjusted with angle ruler and steel strip, and the deviation shall meet the specification requirements.

濟南通風管道

Jinan ventilation pipe

3.風管的圓弧面或折線面下料彎曲完成后，應與平板預組裝，然后涂上膠粘劑，以保證管件的幾何形狀、尺寸和壓痕。

3. After the arc surface or broken line surface of the air duct is cut and bent, it shall be pre assembled with the flat plate, and then coated with adhesive to ensure the geometric shape, size and indentation of the pipe.

4.連接和組合后的管段應垂直放置，直到它們在移動前成型。

4. The connected and combined pipe sections shall be placed vertically until they are formed before moving.

5.鋁箔復合保溫管用膠粘劑應為板材制造商認可的專用膠粘劑。如果單獨購買粘合劑，濟南通風管道需要進行連接效果對比測試，并且粘合劑要經過監理和板制造商的檢查和批準后才能使用。

5. The adhesive for aluminum foil composite insulation pipe shall be the special adhesive approved by the plate manufacturer. If the brand adhesive is purchased separately, Jinan ventilation duct needs to be tested for connection effect, and the adhesive can only be used after being inspected and approved by the supervisor and the board manufacturer.

對管道內表面污垢進行高壓水射流剝離清洗。濟南通風管道主要用于短距離管道，并且管道直徑要求大于50cm以上。該技術具有速度快，成本低等特點。它們都有各自的功能。

The inner surface of the pipe was cleaned by high pressure water jet. Jinan ventilation pipe is mainly used for short distance pipe, and the pipe diameter is required to be more than 50cm. This technology has the characteristics of high speed and low cost. They all have their own functions.

通風管道設備一般用于通風、環境保護系統的各個領域，隨著技術的發展，通風管道設備的風格也有空間的選擇，常見的圓，矩形，現在仍然螺旋形狀等

Ventilation duct equipment is generally used in various fields of ventilation and environmental protection system. With the development of technology, the style of ventilation duct equipment also has the choice of space, such as circle, rectangle, spiral shape and so on