Shaftless Screw Conveyor

1. Structural features

WLS Shaftless Screw Conveyor

U-shaped section: The overall structure and dimensions are basically the same as the LS series screw conveyor. Shaftless helix: The helix is a thicker ribbon helix without a helix shaft, and the head is connected to the drive shaft. There are two types of single and double blades in structure, and two types of carbon steel and stainless steel in terms of material. According to the pitch ratio, there are 1:1 and 2:3.

Sliding lining plate: the middle and rear working supports of the shaftless spiral body, the materials are divided into three categories: high-strength engineering plastics, stainless steel, and other high wear-resistant materials.

WLSY Shaftless Screw Conveyor

Working parts: Basically the same as WLS type working parts. It absorbs the excellent and mature technology of LSY series screw conveyor, and has the structural characteristics of WLS type screw conveyor.

Round tube casing: good airtight performance, up to air tightness (0.02mpa) performance, can work under positive and negative pressure conditions.

2. Scope of application

WLS Shaftless Screw Conveyor Ordinary model: It has unique advantages for conveying winding materials (such as domestic waste) and fibrous materials (such as wood chips and wood chips).

Heat-resistant models: conveying hot materials and high-temperature materials without end support. Such as high temperature recovery of blast furnace dust, high temperature ash (slag) transportation.

WLSY Shaftless Screw Conveyor Ordinary model: conveying strong adhesion and paste-like viscous materials. Such as sludge in sewage, slag with high moisture content, etc.

Explosion-proof model: conveying flammable and explosive materials. Such as fuel chamber fuel (coal) feed.

Application range: It is widely used in chemical industry, building materials, metallurgy, grain and other departments. Under the condition of inclination angle β < 20 °, it can transport powdery, granular and small pieces of materials that are not viscous, not easy to deteriorate, and do not agglomerate.

Shaftless screw conveyor is a kind of machine for conveying goods. Compared with traditional shafted screw conveyor, it adopts the design of no central shaft and uses a certain flexible integral steel screw to push materials, so it has the following outstanding advantages: strong anti-winding.

There is no central axis interference, and it has special advantages for conveying belt-shaped and easy-to-wind materials. Application of Shaftless Screw Conveyor: WLS series shaftless screw conveyor is used in sewage treatment plant to transport materials such as decontamination machine grating slag and filter press mud cake with medium and fine gratings with a net distance of 50mm. Good environmental performance. The use of fully enclosed conveying and easy-to-clean spiral surfaces can ensure environmental sanitation and the materials to be delivered are not polluted or leaked. Large torque and low energy consumption. Because the screw has no shaft, the material is not easy to be blocked, and the discharge port is not blocked, so it can run at a lower speed, drive smoothly, and reduce energy consumption. The torque can reach 4000N/m. Large delivery volume. The conveying capacity is 1.5 times that of the traditional shaft screw conveyor of the same diameter. Long conveying distance. The conveying length of a single machine can reach 60 meters. According to the needs of users, multi-stage series installation can be adopted to transport materials over long distances. Able to work flexibly, one machine can be used for multiple purposes. It can be discharged from the bottom and from the end. Using special lining board, the machine can work under high temperature. Compact structure, space saving, beautiful appearance, easy operation, economical and durable.

Structure: Shaftless screw conveyor is mainly composed of driving device, head assembly, casing, shaftless screw, trough liner, feeding port, discharging port, cover (when necessary), base and so on. Driving device: Cycloidal pinwheel reducer or shaft-mounted hard-tooth surface gear reducer is used. In the design, the driving device should be set at the end of the discharge port as much as possible, so that the screw body is in a tension state during operation. The head is equipped with a thrust bearing, which can bear the axial force generated when conveying materials. Chassis: The chassis is U-shaped or O-shaped, with a rain-proof cover on the upper part, and the material is stainless steel or carbon steel or FRP. Shaftless Spiral: The material is stainless steel or carbon steel. Tank liner: The material is wear-resistant plastic plate or rubber plate or cast stone plate, etc. Inlet and outlet: There are two kinds of square and round. Generally, the form of inlet and outlet is determined by the user.

Reasons and Solutions for Blade Damage of Shaftless Screw Conveyor

1> The blade is too thin. Because the shaftless screw conveyor lacks an intermediate shaft, all the stress points are on the blade, so the thickness of the blade has a very important influence on the actual use of the equipment. Choosing a screw blade with an appropriate thickness directly affects the use effect of the shaftless screw conveyor. 2>. The wheelbase of the blade is too small, and the diameter of the spiral pipe is not properly selected. When conveying powder or flake materials, the blade wheelbase is too small, resulting in excessive extrusion force, which directly damages the blade. With the rotation of the shaft, the thicker blade will also cause a certain amount of damage. Another reason is that the diameter of the pipe is small, which will also cause excessive pressure. cause severe leaf damage. After taking the above two measures, the blade speed can be reduced at the same time. to achieve this effect.

Technical Data:

Model	blade diameter (mm)	Rotate Speed (r/min)	Conveying capacity (m³/h)
WLS150	Φ148	60	5
WLS200	Φ180	50	10
WLS250	Φ233	45	15
WLS300	Φ278	40	25
WLS400	Φ365	30	40
WLS500	Φ470	25	65

Note: lenght can becustom-made according to customer's requirements.

1.Service:

a.If buyers visit our factory and check the machine, we will teach you how to install and use the

machine,

b.Without visiting, we will send you user manual and video to teach you to install and operate.

c.One year guarantee for whole machine.

d.24 hours technical support by email or calling

2.How to visit your company?

a.Fly to Beijing airport:By high speed train From Beijing Nan to Cangzhou Xi (1 hour), then we can

pick up you.

b.Fly to Shanghai Airport: By high speed train From Shanghai Hongqiao to Cangzhou Xi(4.5 hours),

then we can pick up you.

3.Can you be responsible for transport?

Yes,please tell me the destination port or address.we have rich experience in transport.

4.You are trade company or factory?

we have own factory.

5.What can you do if the machine broken?

The buyer send us the photos or videos. We will let our engineer to check and provide professional suggestions. If it needs change parts, we will send the new parts only collect cost fee.