Tubular Screw Conveyor

▼ Technical Parameters

The tubular screw conveyor is an enclosed continuous conveying equipment that utilizes a cylindrical housing to encase the spiral blade. It is suitable for horizontal or inclined transportation of powdered, granular, and small lump materials. Its sealed structure effectively prevents material leakage and environmental pollution, making it widely used in industries such as building materials, chemicals, grain, and metallurgy.  

▼ Structural Features
1. Enclosed Conveying:The cylindrical pipe housing eliminates dust emissions, meeting environmental requirements.  
2. Flexible Layout:Supports horizontal, inclined (≤20°), and combined installation configurations.  
3. Low-Maintenance Design:No exposed moving parts, reducing potential failure points.  
4. Customizable Options:Can be equipped with explosion-proof motors, wear-resistant liners, variable frequency speed control, and more.  

  
▼ Industrial Applications
1. Building Materials Industry
Widely used in the transportation of powdered materials such as cement, mortar, lime powder, and fly ash.  It can be used in material conveying, batching systems, and loading/unloading systems. Its enclosed structure reduces dust leakage, meeting environmental protection requirements.
2. Chemical Industry
Suitable for conveying chemical powders, additives, resin powders, and fertilizer raw materials that require high levels of sealing and pollution prevention. Corrosion-resistant materials can be selected according to the corrosiveness of the materials, making the equipment suitable for chemical environments.
3. Grain and Food Processing
Suitable for conveying grain particles, wheat, corn, soybeans, and other materials. It can also be used for the enclosed transportation of food raw materials, preventing moisture and contamination, and improving production hygiene.
4. Environmental Protection Industry
Shaftless screw conveyors are prominently used in sludge dewatering, sewage treatment, waste treatment, and kitchen waste treatment systems. They can convey wet sludge, high-solids sludge, and viscous waste materials, preventing clogging and requiring minimal maintenance.
5. Metallurgy and Mining
Can be used to transport highly abrasive materials such as iron powder, ore powder, and slag.  It can be equipped with wear-resistant liners and high-strength screw blades to extend equipment life.
6. Power Industry
Mainly used for conveying materials such as fly ash and coal powder. The enclosed structure effectively reduces dust, improving safety and environmental performance.

▼ FAQ

What is the working principle of a screw conveyor?
A screw conveyor primarily relies on the rotation of a helical blade within a trough to continuously push material along the axial direction. The material forms a stable flow under the action of compression, friction, and gravity from the screw. The equipment can achieve horizontal, inclined, or even vertical conveying, and features a simple structure and good sealing. It is suitable for conveying powdery, granular, and small lump materials. Its smooth operation and continuous working capability make it a common piece of industrial conveying equipment.

What materials and application scenarios are suitable for screw conveyors?
Screw conveyors are suitable for conveying dry powders, granules, small lumps, and some viscous materials, such as cement, grain, feed, fly ash, and sand. They are widely used in building materials, chemical, grain processing, and environmental sludge treatment industries. Because they can provide enclosed conveying, they reduce dust leakage and are suitable for applications with high environmental requirements. Depending on the working conditions, a shaftless screw structure can also be selected to handle highly viscous or easily tangled materials.

How to perform daily maintenance on a screw conveyor?
Maintenance mainly includes checking the wear of bearings, couplings, and helical blades, regularly replenishing lubricating oil, and maintaining the good operation of the transmission components. It is also necessary to clean residual material from the trough to prevent blockages that affect conveying efficiency. If increased vibration, abnormal noise, or increased torque is detected, the machine should be stopped immediately for inspection to prevent equipment damage. Maintaining the screw in good working condition can extend the overall lifespan of the machine and ensure conveying stability.

▼ Company Introduction

Yancheng Jierda Environmental Protection Equipment Co., Ltd. specializes in the R&D and manufacturing of advanced solutions for gas purification, including filtration and adsorption technologies for dust and pollutant-laden gases, gas-liquid mixing, collision, interception and capture processes, as well as catalytic combustion systems for organic waste treatment. Continuously innovating in technology and applications, we deliver cutting-edge products and engineering services tailored to industrial needs.
Backed by strong technical expertise, we provide end-to-end services in the design, manufacturing, and installation of environmental projects such as industrial VOC treatment, dust removal systems, flue gas desulfurization (FGD), and denitrification (SCR/SNCR) solutions.
We warmly welcome partners and clients from around the world to visit our facilities, explore cooperation opportunities, and collaborate for a greener future.