专注通风管道加工·排烟罩

1、 Spiral duct connection requirements:

1）单壁螺旋风管直径≤600mm采用芯管插接加自攻螺丝连接方式，直径＞600mm采用角钢法兰连接。

1) Single wall spiral air duct with diameter less than or equal to 600mm shall be connected by core pipe plug-in and self tapping screw, and the diameter greater than 600mm shall be connected by angle steel flange.

2）双壁螺旋风管直径＜650mm采用机械法兰连接，直径≥650mm采用角钢法兰连接。

2) Double wall spiral air duct with diameter less than 650mm is connected with mechanical flange, and diameter ≥ 650mm is connected with angle steel flange.

二、双壁螺旋风管加工一般规定:

2、 General requirements for processing double wall spiral air duct:

1）外层螺旋风管镀锌板为热镀锌，其外层镀锌板厚度同单壁螺旋风管要求。

1) The galvanized sheet of outer spiral air duct is hot-dip galvanized, and its thickness is the same as that of single wall spiral cyclone tube.

2）内层板为0.55mm厚的穿孔镀锌板，穿孔率应在30％以上。

2) The inner layer is 0.55mm thick perforated galvanized sheet, and the perforation rate should be more than 30%.

3）中间保温层采用厚度为25mm、密度为32kg／m3的玻璃棉做保温吸声，外贴碳化无纺布。

3) Glass wool with thickness of 25 mm and density of 32 kg / m3 is used as insulation and sound absorption layer, and carbonized non-woven fabric is pasted outside.

三、单壁螺旋风管加工:

3、 Single wall spiral air duct processing:

钢带架上装好成卷的薄钢带，薄钢带通过切断与焊接机构进入压制成型工作部分，成型工作头（专用模具）使通风管道按规定的管径锁缝成形。成型螺旋管沿成品架不断加工，向前延长，移动锯根据所需尺寸截取卷好的圆形螺旋通风管。然后从成品架上卸下放成品区，按系统编好号。

The thin steel strip in coils is installed on the steel belt rack, and the thin steel strip enters the pressing forming part through the cutting and welding mechanism, and the forming working head (special mold) makes the ventilation pipe seam forming according to the specified pipe diameter. The forming spiral pipe is continuously processed along the finished product rack and extended forward. The circular spiral ventilation pipe is cut off by moving saw according to the required size. Then it is unloaded from the finished product rack to the finished product area and numbered according to the system.

A、济南风管加工厂家生产的螺旋风管上的消声器制做与安装操作要点

A. Manufacturing and installation operation points of muffler on spiral air duct produced by Jinan air duct processing factory

1．消声器和消声弯管应单独设支架，其重量不得由风管承受。

1. Mufflers and silencing elbows shall be provided with separate supports, and their weight shall not be borne by the air duct.

2．消声材料的选用应符合设计的防水、防腐、防潮要求。

2. The selection of anechoic materials should meet the design requirements of waterproof, anti-corrosion and moisture-proof.

3. 消声片单体安装、固定端不得松动，片距应均匀。

3. The installation and fixed end of the anechoic sheet shall not be loose, and the spacing between the sheets shall be uniform.

4．消声器的穿孔板应平整，孔眼排列应均匀，不得有毛刺，其穿孔率应符合设计的要求。

4. The perforated plate of muffler shall be flat, the hole arrangement shall be uniform, without burr, and the perforation rate shall meet the design requirements.

B、硬聚氯乙烯螺旋风管的部件制做操作要点

B. Key points of manufacturing and operation of UPVC spiral air duct

1. 防火阀安装方向位置应正确，易熔件应在系统安装后装入。

1. The installation direction and position of fire damper shall be correct, and the fusible parts shall be installed after system installation.

2. 螺旋风管水平安装，水平度的允许偏差每m不应大于3mm，总偏差不应大于20mm。螺旋风管垂直安装；垂直度的允许偏差每m不度大于2mm，总偏差不应大于20mm

2. For horizontal installation of spiral air duct, the allowable deviation of levelness shall not be greater than 3mm per m, and the total deviation shall not be greater than 20mm. Spiral air duct shall be installed vertically; the allowable deviation of perpendicularity shall not be greater than 2mm per m, and the total deviation shall not be greater than 20mm

3. 各类风口的安装应平整、位置应正确、转动部分灵活，与螺旋风管的连接应牢固。

3. The installation of all kinds of tuyere should be flat, the position should be correct, the rotating part should be flexible, and the connection with spiral air duct should be firm.

4. 支吊、托架不应设置在风口，阀门检视口处，吊架不得直接甩在法兰上。

4. Supports and brackets shall not be set at the air outlet and valve inspection port, and the hanger shall not be directly thrown on the flange.