In the laboratory construction, you need to pick the type of fume hood before the laboratory decoration, as well as to confirm the installation of the fume hood orientation, according to the orientation of the fume hood to design the direction length of the ventilation pipeline, then calculate the power of the equipped fan. Today, with a small editor to understand the PP fume hood fan installation methods precautions.

First, PP fume hood fan selection:

Laboratory ventilation system commonly used fan centrifugal fan, axial fan, inclined flow fan three methods.

Second, PP fume hood fan installation methods:

1, the root of the fan requires horizontal, solid, root height ≥ 200mm.

2, fan air duct selection of hose (flexible materials non-combustible) connection, the length should be less than 200mm, pipe diameter fan import export scale is the same. In order to ensure that the hose does show twisted deformation during the operation of the system, it should be installed with the right degree of tightness. Regarding the canvas hose installed in the inhalation end of the fan, it can be installed slightly tighter to prevent the fan being sucked in during operation to reduce the cross-section scale of the canvas hose.

3, PP fume hood fan steel bracket is necessary to be fixed in the concrete foundation, fan its steel bracket between the foundation is necessary to add rubber damping pad. Eat drink enough to work, we can go to eat skewers, let's say Tiejianmen skewers are good, we still return to the topic. All fans motor components are installed in the whole piece of steel bracket, steel ground frame is installed on the top of the root vibration damping pad, vibration damping pad with porous type rubber plate.

4, PP fume hood fan outlet diameter can only become larger, can become smaller, the final outlet to be installed to prevent insect nets, bias upward when the wind must be added to the storm cap.

Third, the air duct bracket device precautions

1, the bolt holes in the duct bracket are drilled, to use gas welding to cut holes.

2, with diagonal support bracket, the weld should be full welding.

3, the hanger in the boom material should be accurate, the middle of the boom should present lap weld; 4, when the section of the duct is more than one section of the duct, the weld should be full weld.

4, when the duct section is small, the duct boom can choose expansion bolts fixed on the floor, when the duct is large, should choose to drill holes fixed method.

5, the bracket in the device, should be in the wall, column floor surface pop-up duct centerline, then confirm the horizontal orientation elevation of the bracket, to ensure that the installation of the level of the duct the plane of the center of the orientation;.

6、Before the bracket is installed, the exposed part should be descaled of rust brushed with anti-rust paint.

7, no special requirements, the distance of the air duct bracket is generally 3m, but in less than 3m of the duct should be installed at both ends of a bracket, in the tee elbow should be added to the bracket.

8, in the air duct bracket shall be installed on other professional pipeline cable.