Selection condition of the Screw Conveyor

Primary considerations for the selection of a screw conveyor are as follow:

1. Type and condition of the materials to be handled, including maximum particle size, and, if available, the specific bulk density of the material to be conveyed.

2. Quantity of transported material, expressed in pounds or tons per hour.

3. The distance for which the material is to be conveyed.

Below is the necessary information for the selection of a screw conveyor system, presented in a series of five steps. These steps are arranged in logical order, and are pided into separate sections for simplicity. The five steps are:

1. Establishing the characteristics of the material to be conveyed.

2. Locating conveyor capacity (conveyor size and speed) on capacity tables.

3. Selection of conveyor components.

4. Calculation of required horsepower.

5. Checking of components torque capacities (including selection of shaft types and sizes)

For more information, pls do not hesitate to contact us via : 

Web:http:www.pkmachinery.com

Mobilephoe:+86 18338953783

Tel: +86 373 579 9198

Fax: +86 373 507 1699

Address: 289 Yellow River Road, Xinxiang City, Henan Province, China

typical hazard and safeguarding methods of screw conveyor

Screw Conveyors

Hazards:

Screw conveyors are troughs with a revolving shaft with a spiral or twisted plate. In-going nip points for the entire length of the screw conveyor exist between the revolving shaft and trough. Because the trough may be covered and the conveyor may be located at or near floor level, screw conveyors can be particularly dangerous. 

Hazards Controls:

Screw conveyor housing must completely enclose moving elements (screw mechanism and power transmission apparatus), except for loading and discharge points. Permanent affixed grids or polycarbonate can be installed for visibility purposes to allow the operator to monitor the operation. Besides, trough side walls should be higher to prevent workers from reaching into or falling into the trough. If it is an open troughs, workers must be protected by secondary safeguarding methods such as railing or fence. Feeding loading and discharge points can be guarded by enclosures, screening, grating, or some other interruption across the openings which allow the passage of materials but do not allow entry of the body. 

 -------------------------------------------------------------------------

Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, andVibrating screen, Bucket elevator, Screw conveyor, Scraper conveyor using the world's most advanced technology, we are willing to serve every company to meet your custom needs. our goal is "be the future global leader of mining machinery industry". have any questions, please contact us without any hesitation.

For more information, pls do not hesitate to contact us via : 

Web:http:www.pkmachinery.com

Mobilephoe:+86 18338953783

Tel: +86 373 579 9198

Fax: +86 373 507 1699

Address: 289 Yellow River Road, Xinxiang City, Henan Province, China

How to Clean the Remaining Material of the Screw Conveyor?

There are two kinds of screw conveyer : tubular type and trough type. According to different designs , the cleaning method is also different.

Tubular screw conveyor: it has two cleaning methods since the casing is a steel pipe: water injection cleaning and ventilation cleaning. Water injection cleaning means that inject a large amount of water at the inlet and wash the internal tube, flushing the remaining water out of screw conveyor. Ventilation cleaning which uses the air pump or fan to bring the air inside the tube and blow the material out of the tube. The two methods are very convenient to clean up the material inside the tube.

Trough screw conveyor: since the casing is trough type and there is cover plate on the trough casing, so please take down the fixed bolts when clean the material and remove the cover plate, then start to clean up the material. It is very easy to clean the kind of material, you can also clean it directly by air pump.

After completing operation of screw conveyor, a certain amount of material can not be discharged thoroughly, only when you make sure the machine stops running, you can start to clean the screw conveyor, otherwise there will be accident.

For more information, pls do not hesitate to contact us via : 

Web:http:www.pkmachinery.com

Mobilephoe:+86 18338953783

Tel: +86 373 579 9198

Fax: +86 373 507 1699

Address: 289 Yellow River Road, Xinxiang City, Henan Province, China

Introduction of screw conveyor

Henan pingyuan mining machinery Co., Ltd provides three types of screw conveyor which are U - type screw conveyor, pipe screw conveyor and cement screw conveyor.

U- type Screw conveyor

A screw conveyor is one of the most versatile and cost effective mechanical conveyors for handling dry bulk solids such as flakes, grains, powders, seeds and granules. The conveyor provides enclosed transfer while moving materials-horizontally, vertically or at an incline and can deliver materials from one or more inlet points to one or more discharge points. It usually consist of a trough or tube containing either a spiral blade coiled around a shaft, driven at one end and held at the other, or a "shaftless spiral", driven at one end and free at the other. Screw conveyors can be operated with the flow of material inclined upward. When space allows, this is a very economical method of elevating and conveying. As the angle of inclination increases, the capacity of a given unit rapidly decreases.

Pipe screw conveyor

GX tubular screw conveyor is bulk material handling equipment, which usually consists of a tube containing either a spiral blade coiled around a shaft (sometimes called an auger), driven at one end and held at the other. The  main parts include tube, shaft with spiral blades, inlet and outlet chutes, as well as driving device. 

The closed pipe-type screw  conveyor  is a pipe  with a  shaft  inside  with welded  screw blades  and  passive  bearing.The screw’s  blades  have different  pitch which depends  on the type of the  transported  raw  material  and the planned capacity. This  type of conveyor  is closed, which  means that the  screw cannot  be accessed  directly. Due to the closed  structure,  the transported  raw material does not  spill outside the machine during  transport.

The machine can be equipped with a pull screw. In this version, the drive unit is located in the direction of the raw material feeding. Some screw conveyors are equipped with push screws with gear motor installed on the feeding side. The screw conveyor is fitted with an initial or end bearing. Depending on the type of transported raw  material, slide or bearing rests are installed.

Horizontal screw conveyor has the advantages of sealed operation, simple structure. screw conveyor suitable for conveying powdery, granular and small bulk materials horizontally or aslope, such as coal, ash, slag, cement,  food, etc. screw conveyor is an new transportation equipment

Cement Screw Conveyor

Cement screw conveyor is bulk material handling equipment, which usually consists of a tube containing either a spiral blade coiled around a shaft (sometimes called an auger), driven at one end and held at the other. The main parts include tube, shaft with spiral blades, inlet and outlet chutes, as well as driving device.

For more information, pls do not hesitate to contact us via : 

Web:http:www.pkmachinery.com

Mobilephoe:+86 18338953783

Tel: +86 373 579 9198

Fax: +86 373 507 1699

Address: 289 Yellow River Road, Xinxiang City, Henan Province, China