What is the working preparation for screw conveyor installation?

1.The screw conveyor foundation should be completed before installation for 20 days which will make the foundation secure and reliable,and will prevent screw conveyor from sinking and deformation to ensure screw conveyor with enough stability when running.
2.The casing installation should accord with following stipulation:
(1)Allowed longitudinal straightness error is 1/1000 of length,total length error is 3mm.
(2)Allowed horizontal straightness error is 1/5000 of width.
(3)The inner wall of the casing is equal to the two sides of the screw blade,and the error is allowed to be 2 mm,the bottom interval error is ±2 mm.
(4)The connection of casing should be closely,and no interval is allowed.
(5)The casing should be fully contacted with structure support.
3.Allowed overlap error of center line between shaft and bearing is 0.5mm.
4.There should be no apparent height difference between two adjacent casings.
5.Please adjust and steady casing before tightening foundation bolts.
6.Output shaft of driven device should be in the same axis line with screw conveyor shaft.
7.If the inlet and outlet need to be installed on site,please weld them after fixing the total machine.

The key points for screw conveyor selection

1.Conveyor capacity
Screw conveyor conveying capacity refers to the amount of material per unit time.Users should consider whether the conveyor can support the use of other production equipment before design in order to design a reasonable conveyor model.
2.Conveying speed
Conveying speed can improve the transmission capacity. For conveyor which adopts chain as traction, the transporting speed should not be too fast, in order to prevent the power load increasing .
3.Component dimensions
The component dimensions of conveyor includes conveyor trough width or pipe diameter , etc. Which directly affect the transmission capacity of screw conveyor.
4.Conveyor length and inclination
Conveyor length and inclination directly affects the total resistance and required power of the conveyor. Screw conveyors installation can be level and inclined, so please let us know the using condition when select the model.
5.Screw conveyor motors
Motor selection can be speed controlled motor or general motor to control the conveying speed and throughput per hour.
6.Others
Whether hopper should be considered in the inlet or not,as well as the feeding hopper size.  

Screw Conveyor

What is the required parameter for screw conveyor model selection?

In our daily life,screw conveyor is a common used equipment.In order to ask manufacturers  to select model and quote price more quickly and accurately,we need to provide complete machine technical parameter and requirement to manufacturers. Here,PK Machinery lists the parameter needs to offer for reference:
1. Material name _______
2. Material size _______mm
3.Size distribution_______%?
4 .Material water content _______%?
5 .Handling capacity________t/h
6 .Material density ________t/m3?
7 .Material temperature _______ ℃?
8. Material is corrosive or not_______?
9. Distances between inlet and outlet ______m
10.Voltage __V__HZ 3 phase
11.Upstream and downstream equipment _______
12.Working environment _______

What Factors that Affect the Screw Conveyor Conveying Efficiency ?

The factors are listed as follows:
1.The material has great viscosity and is easy to agglomerate. 
The viscous material is easy to stick on the screw blade and the inner wall of the screw conveyor, which will increase the resistance in the process of conveying, and directly affect the production efficiency.
2.The diameter size of the screw pipe.
Under the same conditions, conveying efficiency of the screw conveyor with larger diameter is higher than the conveyor with small diameter.

3.The dip angle and transportation distance of screw conveyor.
4.The particle size, temperature, moisture, abrasion and corrosion of the material.
Specific parameters can refer to: Screw conveyors and conveying technical parameters calculation formulas.
5.The rotate speed of the screw conveyor.
The rotating speed of the screw conveyor is related to the power of conveyor motor . The working speed of screw conveyor has a close relationship with the material characteristics. High speed screw conveyor requires strict assembly, and demands a better balance. 
Further information,please click:www.pkmachinery.com