Screw conveyor design help

You have to find a professional manufacturer for this, their suggestions are more professional. Or refer to the author of "Powder Engineering and Equipment": Tao Zhendong Zheng Shaohua Publishing House: Chemical Industry Press publication date: 2005-8

This is easy to calculate. Since it is used on food, it should be made of stainless steel. The conveying capacity depends on the pitch and blade diameter, and the length is related to the size of the selected motor!

1. Selection calculation ① Calculate the conveying volume: Q=60φ.β0.krnD3 In the formula: Q—Conveying capacity t/h φ—Material filling coefficient, see Table 3 for selection β0—Inclination coefficient, see Table 4 for selection K—Pitch and diameter proportional coefficient, calculated and evaluated by the screw conveyor of selected specifications r—Material bulk density t/m3 See Table 5 n—Rotation speed r/min d—Screw diameter m ② The minimum screw diameter of the screw conveyor depends on the required conveying volume and the size of the bulk particles. For conveying bulk materials, unsorted materials: D≥(8~10)d Sorted materials: D≥(4~6)dm d=average block size of the material (mm) dm=maximum block size of the material (mm) ③ The circumferential speed of the screw conveyor is not allowed to be too large, otherwise the materials being transported will be subject to strong centrifugal force, which will affect the transportation process. The LS screw conveyor refers to international standards and has four non-rotating speeds (see technical performance table, namely Table 1) for different specifications. It is recommended to use. If you have special requirements, please mention them when ordering. ④ Power calculation: (First from ISO>119~1981) P=Q (λL+H) 367 where: P—Screw machine power KW λ—Operating resistance coefficient, see Table 5 L—Spiral length m H—Spiral inclination height m D—Spiral diameter m ⑤ Motor power P0=p/η η is generally 0.88~0.94 Calculation parameter table of LS screw conveyor: Table 3 Material characteristics: easy to flow, little wear, a small amount of wear and granular to small pieces, abrasive and corrosive φ 0.45 0.33 0.15 Table 4 Inclination angle 0 ≦5 ≦10 ≦15 ≦20 β0 1.0 0.90 0.80 0.70 0.65 The bulk density r and running resistance coefficient of some bulk materials are entered (total resistance coefficient) Table 5 Material R (t/m3) λ Ash and slag 0.7~1.0 3 Lignite 1.1~1.3 2.2 Hematite 1.4 2.2 Heavy ore (Cw-p6) 2.0~2.5 2.2 Light ore 1.25~2.0 2.2 Oats, barley 0.5 1.9 Graphite 0.4~0.6 1.9 Quicklime 0.9 2.2 Dry lime 0.5 1.9 Potato 0.7 1.9 Gravel 1.5~1.8 3 Coke 0.5 3 Raw coal 0.8 2.2 First coal 0.9 1.9 Clay: moist soil 1.8 1.9 Flour 0.5 1.9 Limestone 1.6~1.9 2.2 Sand paddle 1.8~2.1 3 Corn, rye, rice 0.5~0.7 1.9 Sand 1.4~1.7 3 Wheat 0.8 1.9 Cement 1.0~1.3 1.9 　

When designing, pay attention to whether the feed inlet is at the head or the tail. The bearing selection must be accurate. This involves force analysis and careful consideration. Those who study mechanics should understand this.

I am going to design a screw conveyor. The ninth floor only talks about the general steps, but to design reasonable equipment, you need someone with design experience. You have to decide whether to design a material seal based on the process? Hope you get it up and running soon.

The "Transportation Machinery Design and Selection Manual" specifically includes the design and selection calculations of screw conveyors! You can go check it out! address: http://ishare.iask.sina.com.cn/f/5105351.html

There are detailed calculation steps in the "Transportation Machinery Design and Selection Manual".

① Calculate delivery volume: Q=60φ.β0.krnD3 In the formula: Q—Conveying capacity t/h φ—Material filling coefficient, see Table 3 for selection β0—Inclination coefficient, see Table 4 for selection K—Pitch and diameter proportional coefficient, calculated and evaluated by the screw conveyor of selected specifications r—Material bulk density t/m3 See Table 5 n—Rotation speed r/min d—Screw diameter m ② The minimum screw diameter of the screw conveyor depends on the required conveying volume and the size of the bulk particles. For conveying bulk materials, unsorted materials ≥ (8~10)d sorted materials ≥ (4~6)dm d=average block size of the material (mm) dm=maximum block size of the material (mm) ③ The circumferential speed of the screw conveyor is not allowed to be too large, otherwise the materials being transported will be subject to strong centrifugal force, which will affect the transportation process. The LS screw conveyor refers to international standards and has four non-rotating speeds (see technical performance table, namely Table 1) for different specifications. It is recommended to use. If you have special requirements, please mention them when ordering. ④ Power calculation: (First from ISO>119~1981) P=Q (λL+H) 367 where: P—Screw machine power KW λ—Operating resistance coefficient, see Table 5 L—Spiral length m H—Spiral inclination height m D—Spiral diameter m ⑤ Motor power P0=p/η η is generally 0.88~0.94 Calculation parameter table of LS screw conveyor: Table 3 Material characteristics: easy to flow, little wear, a small amount of wear and granular to small pieces, abrasive and corrosive φ 0.45 0.33 0.15 Table 4 Inclination angle 0 ≦5 ≦10 ≦15 ≦20 β0 1.0 0.90 0.80 0.70 0.65