Comparing pneumatic conveying system and tubular chain conveyor

Tube Chain Conveyor

Tube Chain Conveyor

The tubular chain conveyor is a continuous powder transportation equipment, which has good performance in terms of transportation quality and safety, and its application in the field of powder transportation is becoming more and more widespread.

Its principle is to use the chain plates as the driving component to move the powder materials along the conveying pipeline within a relatively sealed pipeline.

When the internal friction between the powder materials is much greater than the external friction between the material and the conveying pipe, the powder materials will gradually move with the driving chain plates and eventually form a relatively stable material flow.

In the vertical transportation process, the powder materials inside the transportation channel will be subjected to the upward force of the driving chain plates.

As the lower part of the powder materials will bear the downward sliding force of the upper part of the powder materials, a certain lateral pressure will be generated, which will increase the internal friction of the powder materials.

If the internal friction is greater than the weight of the powder materials and the external friction, the materials will gradually move upward with the driving chain plates to produce a stable powder transport flow.

Tube Chain Conveyor Process Flow Diagram

  1. Horizontal tube chain conveyor;
  2. Vertical tube chain conveyor;
  3. Feed Funnel;
  4. Dust collector with bag filter;
  5. Electric winch;
  6. Buffer funnel;
  7. Rotary Valve;
  8. Extension reserved for the tubular chain conveyor.

Comparison of advantages between two powder transport systems

Advantages of the pneumatic conveying system:

(1) The equipment construction is simple and easy to install, with lower control cost and short construction time. The main components of the pneumatic conveying system are welded structures made of steel sheets and pipe and tank sections. The components do not move relative to each other and maintenance operations are relatively easy. It's easy to achieve automation operation.

(2) Transportation efficiency is high and there is no return transportation of equipment. Other transport tools have the disadvantage of returning empty-handed. The transport medium of the pneumatic conveying system is air, which only needs to be discharged into the air at the terminal. During the conveying process, the feeding port can continuously add materials to achieve continuous conveying.

(3) Working and health conditions are good. When material is transported by air, it flows in the pipe and the pressure inside the pipe is negative. Dust will not fly, material will not scatter or pollute the environment.

(4) Pneumatic conveying system conveying piping is easy to configure a piping network according to local conditions, with simple and flexible layout. It can fully utilize the workshop area and is easy to adapt to the workshop environment.

Advantages of tubular chain conveyor system:

(1) The system is completely closed, with good sealing effect.

Because the tubular chain conveyor system is a cylindrical structure assembled into sections, it is easy to seal and has excellent sealing performance, which can achieve a complete sealing effect.

(2) The structure is compact and the transportation efficiency is high.

Due to the special structure of the internal conveying part, material settlement is minimal during the conveying process, so the conveying efficiency is relatively high.

(3) The system has flexible layout and easy installation.

Because the structure of the tubular chain conveyor is tubular, it can be designed according to the user's needs in an existing or original factory location, and can fully meet various usage occasions.

(4) The maintenance rate is low and the installation is convenient.

Due to the simple, reliable and durable internal structure of the tubular chain conveyor system and the use of special process treatment on the internal structure parts, the maintenance rate is extremely low, greatly improving the service life.

Schematic diagram of tubular chain conveyor layout.

Applications of two powder transport systems

(1) Positive pressure pneumatic conveying equipment was previously widely used in power plant ash conveying system. Its characteristics such as closed transportation and easy layout, as well as national environmental protection requirements in recent years, have gradually promoted its application in the chemical industry. There have been many application examples in polyolefin powder transportation and other aspects.

(2) In recent years, tubular chain conveyors have been relatively maturely applied in industries such as PTA, and are currently widely used in the transportation of small powder and fluid materials.

The tubular chain conveyor system has internal mechanisms such as chains, conveying discs and corner chain wheels.

Many research results have emerged for the transportation of discs, chains, tensioning devices, etc. in recent years, which have solved some of the problems in the manufacture and use of tubular chain conveyor systems and are conducive to the promotion and use of tubular chain conveyor systems.

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