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Bamboo Powder Tubular Screw Conveyor uses a seamless circular steel pipe as its shell, with an internal rotating shaft equipped with helical blades. It utilizes the thrust of the helical blades to smoothly move bamboo powder along the pipe's axis, making it an ideal material conveying equipment for industries such as bamboo processing and biomass energy. Material: Carbon steel, stainless steel
Diameter: 89-800mm
Length: 2-30 meters
Angle: Horizontal, Inclined, Vertical
Optional Configurations: Explosion-proof motor, valves, casters
Suitable Materials: Bamboo powder, charcoal powder, plastic powder, feed powder


Bamboo Powder Tubular Screw Conveyor is a fully enclosed continuous conveying device for transporting lightweight biomass powders such as bamboo powder and wood powder. It uses a seamless circular steel pipe as its shell, with an internal rotating shaft equipped with helical blades. The rotating helical blades propel the material axially within the pipe, achieving continuous conveying from the inlet to the outlet. It effectively solves the problems of dust and material bridging during bamboo powder conveying. The product supports horizontal, inclined, and vertical conveying, with a single unit horizontal length of up to 30 meters. Non-standard customization is also supported, allowing for custom production based on existing site conditions and conveying requirements, ensuring perfect integration with existing production lines for stable bamboo powder conveying.

The Bamboo Powder Tubular Screw Conveyor addresses environmental concerns with its fully enclosed, dust-free conveying system. Its variable pitch anti-clogging design overcomes material bridging challenges, and wear-resistant reinforced components combat the friction and wear of bamboo fibers. Energy-efficient, fast, and flexible in layout, it is a reliable conveying solution for the bamboo processing industry.

Anti-clogging design: Utilizing a variable pitch or intermittent screw design, it structurally disrupts material bridging conditions; an enlarged inlet size or a forced feeding device ensures uniform and smooth feeding, solving clogging problems.
Fully enclosed structure: Employing a sealed circular tube design, coupled with precise inlet and outlet seals, it ensures a completely leak-free and dust-free conveying process.
Wear-resistant reinforcement: The screw blades are made of high-wear-resistant alloy materials or undergo surface hardening treatment; wear-resistant liners can be added to the inner wall of the tube. Reinforced to address the frictional characteristics of bamboo powder.
Variable Frequency Speed Control: Equipped with a variable frequency speed control motor, the conveying volume and speed can be adjusted in real time according to production needs, achieving energy saving and consumption reduction, while avoiding material overheating or damage due to excessive speed.
The Bamboo Powder Tubular Screw Conveyor is precisely assembled from core components such as the screw body, tubular shell, drive unit, intermediate hanger bearings, and inlet/outlet ports. The coordinated operation of these components ensures smooth material conveying while also considering the equipment's durability and ease of maintenance.

Screw Body: Composed of a screw shaft and screw blades welded to the shaft. The screw blades adopt a variable pitch design; the larger pitch in the feeding section facilitates feeding, while the pitch gradually decreases in the conveying section to generate extrusive conveying force, effectively preventing bamboo powder from bridging and clogging at the inlet.
Tubular Shell: Made of seamless steel pipe, with each section connected as a whole by flange bolts. The fully enclosed tubular structure ensures no leakage or dust generation during bamboo powder conveying, while also possessing good rigidity.
Drive Unit: Composed of an electric motor, reducer, and transmission mechanism, providing power for the rotation of the screw. It can be equipped with frequency converter speed control to adjust the conveying volume in real time according to production needs.
Inlet/Outlet: Can be designed for multi-point feeding and multi-point discharging according to customer requirements, flexibly matching different production process layouts.
When the Bamboo Powder Tubular Screw Conveyor is working, the electric motor drives the screw shaft to rotate through the reducer. After the bamboo powder enters the tube through the inlet, it is pushed by the rotating screw blades, subjected to the combined action of thrust, tube wall friction, and its own gravity. The variable pitch design gradually compresses and pushes the bamboo powder forward, finally discharging it from the outlet, forming a continuous and stable material flow.
To accommodate differences in bamboo powder moisture content and cleanliness, we offer both carbon steel and stainless steel options. Carbon steel is economical and durable, suitable for routine working conditions; stainless steel is corrosion-resistant and pollution-resistant, suitable for high humidity or food-grade environments.

Carbon steel: Features high strength and cost-effectiveness, suitable for bamboo powder conveying under general working conditions. The carbon steel shell surface is usually rust-proofed, meeting the routine needs of most bamboo processing enterprises.
Stainless steel: Offers excellent corrosion resistance and wear resistance, particularly suitable for production scenarios with high bamboo powder moisture content or strict requirements for material cleanliness.
| LS type | 100 | 160 | 200 | 250 | 315 | 400 | 500 | 630 | 800 | 1000 | 1250 |
| GX type | 200 | 250 | 300 | 400 | 500 | ||||||
| Spiral diameter (mm) | 100 | 160 | 200 | 250 | 315 | 400 | 500 | 630 | 800 | 1000 | 1250 |
| Pitch (mm) | 100 | 160 | 200 | 250 | 315 | 355 | 400 | 450 | 500 | 560 | 630 |
| Speed (r/min) | 140 | 120 | 90 | 90 | 75 | 75 | 60 | 60 | 45 | 35 | 30 |
| Delivery capacity QΦ=0.33 (m³/h) | 2.2 | 7.6 | 11 | 22 | 36.4 | 66.1 | 93.1 | 160 | 223 | 304 | 458 |
| 功率Pd 1=10m(KW) | 1.1 | 1.5 | 2.2 | 2.4 | 3.2 | 5.1 | 4.1 | 8.6 | 12 | 16 | 24.4 |
| Power Pd 1=30m (KW) | 1.6 | 2.8 | 3.2 | 5.3 | 8.4 | 11 | 15.3 | 25.9 | 36 | 48 | 73.3 |
| Speed (r/min) | 120 | 90 | 75 | 75 | 60 | 60 | 45 | 45 | 35 | 30 | 20 |
| Delivery capacity QΦ=0.33 (m³/h) | 1.9 | 5.7 | 18 | 18 | 29.1 | 52.9 | 69.8 | 125 | 174 | 261 | 305 |
| Power Pd 1=10m (KW) | 1.0 | 1.3 | 2.1 | 2.1 | 2.9 | 4.1 | 4.7 | 6.8 | 9.4 | 14.1 | 16.5 |
| Power Pd 1=30m (KW) | 1.5 | 2.3 | 4.5 | 4.5 | 7 | 8.9 | 11.6 | 20.4 | 28.3 | 42.2 | 49.5 |
| Speed (r/min) | 90 | 75 | 60 | 60 | 45 | 45 | 35 | 35 | 30 | 20 | 16 |
| Delivery capacity QΦ=0.33 (m³/h) | 1.4 | 4.8 | 15 | 15 | 21.8 | 39.6 | 54.3 | 97 | 149 | 174 | 244 |
| Power Pd 1=10m (KW) | 0.9 | 1.2 | 1.9 | 1.9 | 2.5 | 3.4 | 4.3 | 5.4 | 8.1 | 9.5 | 13.3 |
| Power Pd 1=30m (KW) | 1.2 | 2.2 | 3.8 | 3.8 | 5.4 | 6.8 | 9.2 | 16 | 24.4 | 28.6 | 39.9 |
| Speed (r/min) | 75 | 60 | 45 | 45 | 35 | 35 | 30 | 30 | 20 | 16 | 13 |
| Delivery capacity QΦ=0.33 (m³/h) | 1.2 | 3.8 | 11 | 11 | 17 | 31.7 | 46.5 | 73.0 | 99.3 | 139 | 199 |
| Power Pd 1=10m (KW) | 0.75 | 1.1 | 1.6 | 1.6 | 2.1 | 3.1 | 3.7 | 4.6 | 5.7 | 7.7 | 11 |
| Power Pd 1=30m (KW) | 1.1 | 1.8 | 3.4 | 3.4 | 4.4 | 5.6 | 8 | 14 | 16.7 | 23.2 | 33 |
Bamboo powder, as a lightweight, high-fiber, and dust-prone biomass powder, is effectively protected by a fully enclosed tube in a tubular screw conveyor. Variable pitch design and forced feeding device effectively prevent bridging and clogging; wear-resistant materials extend equipment life.

Bridging and Clogging: Bamboo powder has poor flowability and is prone to bridging at the inlet of ordinary conveying equipment, leading to conveying interruptions.
High Dust Pollution: The conveying process generates a large amount of dust, which not only pollutes the environment and wastes materials, but also poses a safety hazard of dust explosion.
Equipment Wear: Bamboo fiber has a certain degree of friction, causing rapid wear on conveying components.
The Bamboo Powder Tubular Screw Conveyor has been successfully applied in numerous bamboo processing and biomass energy companies worldwide. From horizontal long-distance conveying to steep-angle lifting, from single-point feeding to multi-point distribution, our equipment has withstood the practical test of various working conditions, winning the trust and repeat purchases of customers with its stable performance and significant conveying effect.

Bamboo Fiber Board Factory: The customer needed to convey bamboo powder from the crushing workshop to the board production line, a conveying distance of 22 meters, requiring stable capacity and dust-free conveying. A tubular screw conveyor with a pipe diameter of Φ273mm was selected, equipped with a 7.5kW variable frequency motor. After commissioning, the conveying capacity stabilized at 8-10 tons/hour, and the dust concentration in the workshop was reduced by more than 90%.
Biomass Pellet Fuel Plant: The customer needs to lift bamboo powder to an 8-meter-high pellet mill hopper, requiring a fully enclosed, explosion-proof conveying system. A Φ219mm stainless steel tubular screw conveyor with an explosion-proof motor is selected, with a 45° conveying angle and a single-unit conveying length of 15 meters, achieving a stable feed rate of 6 tons/hour.
Selecting a Bamboo Powder Tubular Screw Conveyor requires comprehensive consideration of multiple factors, including material characteristics, conveying distance, installation space, and explosion-proof requirements. We provide one-on-one technical consultation to precisely match the pipe diameter, material, and drive configuration according to your actual working conditions.

Material Characteristics: Determine the moisture content, bulk density, and particle size distribution of the bamboo powder. For higher moisture content, stainless steel is recommended to avoid material adhesion and corrosion.
Conveying Capacity and Distance: Determine the hourly conveying capacity and horizontal/vertical conveying distance based on production needs. Larger pipe diameters and higher power result in stronger conveying capacity.
Installation Space and Inclination Angle: Confirm available site space and determine the horizontal, inclined, or vertical installation method. For large-angle conveyors, a smaller screw pitch design is required to prevent material slippage.
Explosion-proof Requirements: Bamboo powder is a combustible dust. For dusty environments, it is recommended to configure an explosion-proof motor and anti-static sealing device.
To adapt to different process layouts and operating scenarios, the bamboo powder tubular screw conveyor offers a wide range of optional configurations, including flange connections, multi-point inlet/outlet, frequency conversion control, and explosion-proof motors. The modular design allows for flexible equipment combinations, ensuring the most suitable configuration for both new production lines and existing line upgrades.

Flange Connections: All pipe sections and inlet/outlet ports are connected using flange bolts to ensure overall rigidity and sealing. Flange connections facilitate segmented transportation, rapid on-site installation, and subsequent maintenance disassembly.
Multi-point feeding/discharging: Multiple feed inlets or outlets can be installed on the pipe body according to production process needs, allowing one machine to simultaneously feed materials from different locations or supply materials to multiple workstations.
Variable frequency control: Equipped with a variable frequency speed controller, the screw speed can be adjusted in real time according to the actual production load, thereby precisely controlling the conveying volume.
Explosion-proof motor: Bamboo powder is a combustible dust, and if it reaches a certain concentration in a confined space, it poses an explosion risk upon contact with a spark. Equipped with an explosion-proof motor and anti-static sealing device, it eliminates ignition sources at the source, ensuring production safety.
How far can a bamboo powder tubular screw conveyor transport?
The horizontal conveying distance of a single unit is typically 20-30 meters. The actual maximum length is limited by the screw shaft rigidity and the arrangement of intermediate hanger bearings, and needs to be calculated comprehensively based on the conveying volume, pipe diameter, and material characteristics. For longer distances, a segmented relay conveying method can be used.
What is the maximum tilt angle?
The maximum tilt angle is generally recommended not to exceed 60°. The larger the angle, the more obvious the downward trend of the material, and the lower the conveying efficiency. When the tilt angle exceeds 45°, a small-pitch design and reduced rotation speed are required to ensure the bamboo powder is effectively lifted without slipping.
Does it support a mobile design?
Yes. The entire machine can be mounted on a mobile base with casters or track wheels, allowing for flexible transfer between different workstations.
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