ตัวอย่างการคำนวณ Screw Conveyor แบบ Horizontal

ตัวอย่างรายงานการคำนวณ Screw Conveyor แบบ Horizontal 

รับออกแบบ เขียนแบบ คำนวณ เซ็นแบบ โดย EngineerM ConveyorMan 

 

Example of Vertical Screw Conveyor calculation

Calculation of Vertical screw conveyor to Khun Hoon Hamw

1

General Arrangement and bulk material

1.1

Height of the screw conveyor

7.5

m ,

24.6063

ft

1.2

Diameter

0.4

m ,

16

in

Assumed to STD size

1.3

Bulk material

Earth

2700

kg/m³ ,

168.56

lb/ft³

1.4

The maximum lump size of material

5

cm ,

2

in

1.5

The capacity of the conveyor

1

TPH

2204.62

lb/hr

2

Calculation of the vertical screw conveyor

From Table 7-1, 16" Size screw rpm shouldn't over 230 rpm

The basic HP formula is

HP

=

(HPf+HPv)/0.9

----------------(1)

When ;

HPf

=

Drive empty conveyor horsepower

HPv

=

Material convey due to vertical

Where ;

HPf

=

L1NFdFb/1000000

------------------------------------------------------(2)

And,

HPv

=

CLWFv/1000000

------------------------------------------------------(3)

and where:

L1

=

Length of vertical screw conveyor

N

=

Speed of the flight shaft

Fd

=

Screw diameter factor

Fb

=

Hanger bearing factor

L

=

Total lift height

C

=

Capacity

Fv

=

Empirical factor

From (2)

HPf

=

(24.6063)(135)(106)(1.7)/1000000

=

0.598597

Hp

From (3)

HPv

=

(2204.62)(24.3)(168.56)(1.1)/1000000

=

9.924252

Hp

Sub into (1)

HP

=

11.69206

Hp

Final drive, Chain

=

HP/0.93

=

12.5721

Hp

------------------------------------------------------ ANS

3

Calculation's conclusion

3.1

Drive: Top drive with perpendicular chain and sprocket

3.2

RPM of the shaft: 135 rpm *

3.3

Horsepower required: 12.6 Hp

3.4

Hanger bearing material: Ball bearing, Brass

3.5

Pitch flight: Short pitch

3.6

Flight clearance: 1/4 "