Thread Content
Belt conveyors, which are widely used in various industries, offer multiple functions and a high conveying capacity. When transporting materials, they can operate either as individual units or in combination with other conveying devices to form horizontal or inclined conveying systems, thereby meeting the requirements of different layout configurations for production lines. The working principle of a belt conveyor consists mainly of two end drums and a closed conveyor belt wrapped around them. The drum that drives the conveyor belt is what we call a drive drum ； Another drum that merely changes the direction of belt movement is called a direction-changing drum. When a belt conveyor transports materials, the belt speed is a constant value; this constant conveying speed serves as a standard that enables companies to achieve economic benefits. The belt speed of a conveyor is not fixed; it must be selected based on the properties of the material being conveyed, such as its appearance, shape, and physical state. When a belt conveyor is used to transport large volumes of material and has a wide conveyor belt, a higher belt speed should be selected. For materials that are easy to rotate, have a small particle size, are highly abrasive, tend to generate dust easily, or require high standards in terms of hygiene, it is more appropriate to use a lower belt speed. For belt conveyors that transport materials over long distances in intervals, a higher belt speed should be selected ； When the conveying interval is short and the conveyor has a large inclination angle, the belt speed becomes slower, and thus the conveying speed is also slower. When the amount of dust conveyed is low, the belt speed can be set between 0.8 m/s and 1 m/s ； Or it is determined based on material characteristics and process requirements. When manually weighing the ingredients, the belt speed should not exceed 1.25 m/s. When using a plow-type unloader, the belt speed should not exceed 2.0 m/s. When using a unloading vehicle, the belt speed should generally not exceed 2.5 m/s ； When transporting fine materials or small pieces, the allowable belt speed is 3.15 m/s. When a weighing scale is available, the belt speed should be determined based on the request of the active weighing scale. When transporting products, the belt speed is generally less than 1.25 m/s. The selection of the speed of a belt conveyor depends on the harmony between the belt thickness and the belt width, as well as on the conveying capacity, the properties of the material, its particle size, and the inclination angle of the conveyor’s track. As the conveyor moves upward, the inclination angle increases and the belt speed decreases ； The belt speed should also be determined based on the type of discharge assembly used on the conveyor; when a plow-type discharge device is employed, the belt speed should not exceed 3.15 m/s. ont face="Calibri">; The chains should be connected using couplings, with the coupling pieces facing outward – this is the correct way to connect the chains of a belt conveyor. The specific method is as follows: The conveyor belt system is installed horizontally on the machine frame; after the frame is installed, each foot must be adjusted until the entire machine is level. When installing the mesh belt, it is important to measure the contact dimensions between the chain and the track to ensure proper contact between them; there should be no twisting or misalignment. After determining the exact length, the parts should be joined in a circular pattern. The initial adjustment of the belt tension should be set slightly looser than the normal tension. The motor of the belt conveyor must be securely fixed, the chain tension should be adjusted to the proper level, and then the sealing cover should be installed. When starting a belt conveyor, a step-by-step start method should be used: set the frequency converter to 40HZ, and only press the button fully after confirming that there is no noise or vibration.