Working principle of belt conveyor

The determination of speed is very important for the design of belt conveyor, which is related to the transportation volume and cost. Increasing the belt speed of belt conveyor can improve the conveying capacity. Under the same transportation conditions, a smaller bandwidth can be used, and the linear load and tension of the conveyor belt can be reduced. However, raising the speed of the conveyor belt may also cause dust, which will increase the wear of the conveyor belt in the material. The guide groove, sweeper, etc. should also be considered. 2. If the conveying capacity is large and the belt is wide, a higher belt speed should be selected. 3. For a longer horizontal conveyor, a higher belt speed should be selected. The larger the inclination of the conveyor, the shorter the transmission distance and the lower the side belt speed. 4. It is generally used for conveying materials with large amount of dust, and the belt speed is 0.8 ~ 1m / s. 5. When weighing artificial ingredients, the belt speed should not be greater than 1.25m/s. 6. When using plough unloader, the belt speed should not exceed 2.0m/s. 7. When using unloading truck, the belt speed should not exceed 2.5m/s. When conveying small materials, the belt speed is allowed to be 3.15m/s. 8. When there is a scale, the belt speed should be determined according to the requirements of the automatic scale. 9. When conveying finished products, the belt speed is generally less than 1.25m/s. 2. The roller is light. The shaft and wheel are connected by a single key, and the spokes are welded. The shaft is connected with the wheel expansion sleeve, and the spokes are welded. The shaft is connected with the expansion sleeve of the wheel, and the cylinder block is welded with the spoke plate. 4. The packaging is divided into herringbone and prism shape. The herringbone shape follows the conveying direction, and the prism shape is suitable for forward and reverse belt conveyor. 5. According to the process, the roller sleeve is divided into hot vulcanization and cold vulcanization. ① Traditional hot vulcanizing cots have low vulcanization pressure and high sulfur content. In addition, the rubber content of the coated plate is low, the rubber wear resistance is poor, the service life is very short, and it is easier to aging under normal working conditions. After aging, it will harden, which will reduce the adhesion between the conveyor roller and the belt. ② the cold vulcanization roller rubber coating adopts the on-site cold cladding technology, which has the advantages of convenient on-site construction, high bonding strength, fast vulcanization speed and long service life. The rubber plate of roller is made of corrosion-resistant and wear-resistant rubber plate, which is compact and compact. High rubber content, excellent tensile strength and tear resistance. Service life is usually 5-8 times of the same kind of rubber. It is naturally vulcanized under normal temperature and pressure. This kind of cold vulcanization adhesive ability is household heat vulcanization packaging. The standard diameters of the supporting rods are 89mm, 108mm, 133mm, 159mm, 194mm, 219mm and 219mm, which are selected according to the belt speed. The speed is usually not more than 600 R / min. Idler is divided into material: seamless steel tube wheel and plastic (phenolic compound) wheel; idler structure, the main technical indicators of its manufacturing quality are driving resistance coefficient and service life. 2. Groove roller groove roller is used to support heavy objects. There are two types of conveyor belts: fixed and hinged. The former is used for fixed conveyor and the latter is used for movable conveyor. The groove angle is usually 30 ° to 35 °. The distance between rollers is usually 1.2m1.5m. 3. Flat roll: the parallel upper roll is used to carry the branch to transport the finished products, and the parallel lower roll is used to make the branch return to support the conveyor belt. 4. Damping roller: it is installed under the receiving part to reduce the impact of the conveyor belt, and the spacing is generally between 100 ~ 600mm. 5. The lower roller is used for the lower branch to support the conveyor belt. There are V-type, reverse V-type and parallel type. V-shape and V-shape can reduce the possibility of belt deviation. When V-shape and anti-v-shape are combined to form prism section, the deviation of conveyor belt can be prevented more effectively. 6. Self aligning idler eccentric idler can prevent and correct the deviation of conveyor belt. It is mainly used for fixed conveyor. Every 10 groups of upper rolls are placed in one group. 7. The transition roller can make the conveyor belt gradually slotted or flattened by the groove, which can reduce the edge tension of the conveyor belt and prevent the material from suddenly flattening. There are three transition rolls: 10 ° 20 ° 30 °. 7. Other idlers: comb type idlers and spiral idlers have the characteristics of non stick roll, strong self-cleaning ability and non stick belt when conveying sticky wet materials. 4、 Lifting angle 1. The lifting angle of ordinary belt conveyor generally does not exceed 20 degrees, because when the inclination angle of belt conveyor is greater than 20 degrees, most materials will fall. The lifting angle of coal belt conveyor shall not exceed 15 degrees. The sintering particle size is less than 12 degrees, the relative particle size of the material is small, and the larger lifting angle can be selected

Post time: Mar-03-2021