스크류 컨베이어 용량계산

[도우미]

 스크류 컨베이어 
 
 
    
1. SPECIFICATION  
1) CAPACITY   :  6.6 ton/hr  ( 7 m3/hr ) 
2) SCREW DIA   :  0.35 m 
3) SCREW LENGTH  :  4.8 m 
4) SCREW PITCH   :  0.29 m 
5) BULK DENSITY  :  30 ton/m3 
6) QUANTITY    :  1 set 
 
2. CAPACITY 
  Q = 60 × A × N × ø × γ 
 A  =  VOLUME 
 N  =  SCREW R.P.M 
 ø =  단면효율 
 γ =  BULK DENSITY 
 P  =  SCREW PITCH 
 A = 3.14 × ( D 2 - d 2 ) × P  = 3.14 × ( 0.35 2 - 0.114 2 ) × 0.29 
                4                              4  
 = 0.0249  m3/R.P.M 
 D = SCREW DIA  
 d = SCREW SHAFT DIA.   
 N = 1750 × 1 × 17 = 47 RPM 
             30   21
 Q = 60 × 0.0249  × 47 × 0.35 × 0.95 
  = 23.35 ton/hr > 9.5 ton/hr ----------- OK 
        
        
        
        
3. MOTOR POWER     
 H = C × Q × L + Q × h                                  H : 소요동력 
          270       270                                    C : 운반물의 성질에 의한 계수    
 Hm = H                                                    L : SCREW CONVEYOR 길이(m) 
      η                                                   h : 양정(m) 
 H = 4 × 22.12 × 4.8 + 22.12 × 3                        Hm : MOTOR 출력(HP) 
            270               270                          η : 구동전달 효율  
 = 1.81 HP 
  
  Hm = 1.81  = 2.5 HP 
        0.7 
  ∴ 사용 MOTOR  : 3HP × 4 P × 1/30 -----------   OK    
 
4. R.S. SPROCKET 
 i = MOTOR RPM  × GEARED RATIO × 1/SCREW RPM 
 i = 1750 × 1/30 × 1/47 
 = 1.24    
 DRIVING SPROCKET : 17 NT 
  
 HEAD SPROCKET NT = D / SPROCKET NT × i 
    = 17 × 1.24 = 21 NT 
  USED CHAIN & SPROCKET :  RS #80 × 17 NT × 21 NT  ------------ OK