How does a screw conveyor work?

The screw conveyor is to use the rotating screw to move the conveyed material along the fixed casing and carry out the conveying work, the head and tail bearings are moved to the outside of the shell, the lifting bearing adopts the sliding bearing and is equipped with a dustproof sealing device, the bearing generally adopts powder metallurgy, the cement is conveyed with felt bearing, and the hanging shaft and the screw shaft are connected by slider. The screw conveyor is generally composed of three parts: the conveyor body, the inlet and outlet and the driving device; The spiral blades of the screw conveyor have three forms: solid spiral surface belt spiral surface and blade spiral surface, wherein, the application of vane spiral surface is relatively rare, mainly used for conveying viscosity and compressibility materials, this spiral suspension type, in the process of completing the conveying operation, has and completes the functions of stirring and mixing of materials at the same time. Compared with other conveying equipment, the screw conveyor has the advantages of small cross-sectional size, good sealing performance, stable and reliable operation, multi-point loading and unloading in the middle, safe operation and easy maintenance.

The head and tail bearings of the screw conveyor are moved to the outside of the shell, the lifting bearing adopts sliding bearing, is equipped with a dust-proof sealing device, the bearing generally adopts powder metallurgy, the cement is conveyed using felt bearings, the hanging shaft and the screw shaft are connected by sliders, when disassembling the spiral, there is no need to move the driving device, there is no need to move the spiral when disassembling the lifting bearing, and the lifting bearing can be lubricated without disassembling the cover plate, the whole machine has high reliability, long life, strong adaptability, and convenient installation and maintenance.

1. The vertical screw conveyor is a continuous conveying equipment that uses forced feeding spiral rotation to convey materials for lifting. It is suitable for powdery, lumpy and granular materials, such as flour, cereals, cement, fertilizer, ash, sand, gravel, pulverized coal, lump coal and other materials. It is used in building materials, metallurgy, chemical industry, mining, coal ash, tobacco, grain, food, medicine and other industries.

Due to the small circulation area in the hub, it is not suitable to convey materials that are easy to deteriorate, sticky, corrosive and easy to agglomerate.

2. The screw conveyor is divided into two parts: the horizontal groove body (that is, the feeding spiral groove body) and the vertical body. The vertical body is divided into three parts: the head section, the middle section and the tail section, and each part has the length of different specifications to be selected according to the height of the machine, which can form a whole machine with different heights of 3 15m, and the screw machine is increased to a height specification for the user to choose.

3. The driving form is driven by vertical and horizontal spirals, in which the vertical body is driven upward.

Screw conveyor is a kind of continuous material conveying machinery, because the continuous conveyor is different in terms of working principle, structural characteristics, method and direction of conveying materials, and a series of other characteristics, so there are many types. In the design of the screw conveyor, the productivity and power of the screw conveyor are mainly determined according to the nature of the conveyed material, the amount of conveying, the conveying distance, the inclination angle of conveying, and the speed of the screw.

There are two main types of design parameters, one is the design constant, which is the known data or pre-given parameters determined according to objective laws and specific conditions. The other type is the design variable, which is the structural parameters that need to be determined that can be changed in the design.

Because there are many kinds of brick-making raw materials, and the characteristics of raw materials change with various factors such as the type of raw materials, the place of origin, the humidity and the purification mode and effect of the material, therefore, when determining the main parameters of the screw conveyor, it is necessary to start from its conveying mechanism, the characteristics of the material, etc., and carry out a variety of tests as much as possible to obtain some design parameters, so as to design the spiral conveying that conforms to the characteristics of the material.

Screw conveyor is a machine that uses a motor to drive the screw to rotate and move materials to achieve the purpose of conveying. When the spiral shaft rotates, due to the gravity of the material and the friction generated by it and the tank wall, the material can only move forward along the bottom of the groove of the conveyor under the push of the blades.

The material conveying of the screw conveyor is mainly based on liquids, powders, and small particles, and we need to know what are the components of the screw conveyor before understanding the working principle of the screw conveyor. In this way, we can clearly understand the working principle of the screw conveyor. In fact, there are not many components of the screw conveyor, which are mainly divided into three parts, the body of the screw conveyor, the inlet and outlet device, and the driving device.

Among them, the spiral body is mainly composed of the head section, the middle section, the tail section, the spiral shaft and the spiral blade. The inlet and outlet devices are set in the nose and tail according to the customer's needs; The drive device is composed of a motor, a reducer, a coupling, etc. The conveying process of the screw conveyor mainly relies on the driving device to provide power, the screw bearing is connected by the coupling for movement, the screw blades follow the bearing to rotate, and the material relies on friction to generate driving force with the casing and screw blades, and moves forward along the bottom of the screw conveyor. With the continuous entry of materials, the materials that come in later produce a certain thrust, which greatly reduces the power consumption of the screw conveyor during operation.

Screw conveyor is a kind of conveying equipment widely used in chemical, building materials, grain and other departments, mainly conveying powdery, granular and small block materials. It is not suitable for conveying perishable, viscous and caking materials.

The ambient temperature used by the screw conveyor is -20 50 ° C; The material temperature is less than 200°C; The inclination of the conveyor is 20°; The conveying length is generally less than 40m, and the longest is not more than 70m.

Compared with other conveying equipment, screw conveying has the advantages of simple structure, small cross-sectional size, good sealing performance, multi-point loading in the middle, safe and convenient operation and low manufacturing cost.

This structure must be combined with an outer cylinder in order to convey the material. The coefficient of friction of the outer cylinder is comparatively large, while the coefficient of friction of the spiral structure is very small.

If you only analyze the spiral structure, of course you can't analyze it.