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The SHANGHAI YOUWEI’S Screw Conveyor Engineering Guide will provide assistance in the design of a screw conveyor or system,yielding optimum performance and efficiency.

Basic Screw Feeder DesignScrew conveyors are mainly used for horizontal transportation and vertical lifting of various powdery, granular and small pieces of loose materials. This equipment has the characteristics of small spiral diameter, high rotation speed, large conveying capacity, high precision, and good conveying conditions. It is simple to operate and maintain; for one conveyor, it can be loaded at multiple points or unloaded at multiple points on the conveying line; during the process of conveying materials, materials can be mixed, stirred or cooled at the same time, and the rigidity of the shell can withstand a certain external force. The conveyor shell is made of high-quality seamless pipes and flange connections. It has good overall rigidity and large load-bearing capacity.It can be transported continuously whether horizontally or at a large angle during transportation. The working position andworking state can be selected at will, disassembled, assembled and moved. convenient

1.The conveying capacity is related to the working angle and length as well as the nature of the material. The above conveyingcapacity is for reference only. 2. A debug motor can be selected according to customer requirements and equipped with frequencyconversion speed regulation. 3. The above table shows the standard series product models. Special specifications for special products require consultation and separate design.

1.Establish characteristics of the bulk material to be conveyed.2.Determine conveyor size and speed based on capacity.3.Calculate horsepower requirements.4.Verify torque rating of components.5.Select conveyor components.

Screw feeders are designed to meter bulk materials and are typically located at the beginning of a process. Capacity or feed rate can be accurately controlled with screw feeders. Variable speed drives improve metering accuracy and can provide a wide range of feed rates. Screw feeders are available in a variety of sizes, lengths, configurations and materials of construction.The inlet of a screw feeder is always flood loaded (100-percent). A screw feeder is typically mounted directly to : * Hopper – Square or rectangular in shape with sloped bottom and limited storage capacity * Bin – Square or rectangular in shape with sloped bottom and large storage capacity * Silo – Cylindrical in shape with cone or mass-flow bottom and large storage capacity

Horizontal screw conveyors are the most widely used type of screw conveyor. Used to convey bulk materials from one part of a process to another, horizontal screw conveyors are available in a wide range of sizes, lengths, configurations and materials of construction. Screw conveyors are typically designed to convey bulk materials at 15, 30 or 45-percent trough loading, depending upon material characteristics of the specific bulk material. As a general rule, trough loading of 45-percent can be used for light, free-flowing and non-abrasive bulk materials. Trough loadings of 15 and 30-percent are typically used for denser, sluggish and more abrasive bulk materials.The inlet of a screw conveyor is always control fed by another device such as: * Screw Conveyor * Screw Feeder * Belt Conveyor * Rotary Airlock * Volumetric or Gravimetric Feeder

Inclined screw conveyors typically operate from slightly above the horizontal position to 45-degrees from the horizontal position.Above 45-degrees an inclined screw conveyor is considered a vertical screw conveyor and must be designed in accordance with the YOUWEI Engineering Guide for Vertical Screw Conveyors. As the degree of incline increases, conveying efficiency is reduced and horsepower requirements increase due to the effects of gravity and bulk material fall back.Conveying efficiency is affected by angle of incline, characteristics of the specific bulk material, type of screw conveyor trough and screw pitch. YOUWEI recommends designing screw conveyors using the lowest possible degree of incline for maximum efficiency.

Bulk materials discharged from centrifuges, filter presses or mixers can easily be conveyed using a YOUWEI’S Shaftless Screw Conveyor. Our shaftless design provides a non-clogging conveying surface that allows difficult-to-convey materials to become easy-to-convey. The perfect solution for handling bulk materials with high moisture content is the YOUWEI Shaftless Screw Conveyor.

Vertical screw conveyors are a very efficient method for elevating a variety of bulk materials at very steep inclines or completely vertical. UV considers any screw conveyor located on an incline over 45-degrees to be a vertical screw conveyor.The compact design allows for the vertical screw conveyor to fit into almost any plant layout. With a minimum number of moving parts,the vertical screw conveyor is a cost-effective and dependable component of any bulk material handling process.

Founded in 2011, Shanghai Youwei Powder Equipment Co., Ltd. is a production-oriented processing enterprise specializing in powder unpacking, conveying, weighing, metering, batching and packaging equipment manufacturing. The registered capital of the company is 12 million. The company has two processing bases in Zhangjiagang City and Qidong City, with a plant area of nearly 8,000 square meters. For more than ten years, we have been deeply engaged in the field of material handling automation, and we have always been guided by customer needs, and have independently developed equipment such as small bag feeding station, ton bag unpacking machine, vacuum feeding machine, weighing and metering batching, ton bag packaging machine and so on. We have rich industry experience in the food ingredients industry, lithium battery cathode and anode industry, and pharmaceutical intermediates industry. The company adheres to the spirit of integrity, pragmatism and innovation, and provides high-quality systematic solutions for all kinds of users with rich experience in technology development , and goes hand in hand with users to create a better future.