What should we know about the weightless feeder

The weightless feeder is a conveying equipment for loose materials. On the one hand, the weightless feeder can transport small materials with particle sizes below 5mm, and on the other hand, this equipment can also transport large materials with a side length of over 1m. It has the advantages of continuous and uniform transportation, adjustability, and strong adaptability. Therefore, it is widely used in the processing and production lines of materials in industries such as building materials, metallurgy, power, coal, and chemical casting. In the cement industry, it is used for the transportation of large blocks of limestone or gypsum from the bottom of the ore bin to the crusher, playing a continuous and uniform feeding role, which can greatly improve work efficiency.

The working principle of the weightless feeder is very simple, mainly that the plate feeder is powered by an electric motor, which drives the chain plate device to move continuously and uniformly at low speed through a reducer and an active sprocket device, achieving the purpose of transporting materials. Due to the fact that many important components on the weightless feeder are processed and riveted parts, there are often quality issues in production. Generally, users do not pay timely attention to them during the initial use of the equipment, which may gradually reflect some manufacturing quality issues of the weightless feeder equipment in the form of equipment failures after production and operation. Therefore, it is recommended to control the manufacturing quality of the weightless feeder during the manufacturing process to reduce equipment problems during production. The weightless feeder in the production process equipment configuration of cement plants is generally used for the transportation of materials such as clay, raw materials, clinker, slag, gypsum, etc. The specific composition of the weightless feeder equipment used in the cement industry mainly includes frame, chain, sprocket, transmission device, material tray, guide groove (including lining plate), cleaning chain, device, and other accessories. The transmission device is composed of a motor, a reducer, a hydraulic coupling, a coupling, and a transmission base.

There are currently three solutions to the problem of the weightless feeder not being able to start with heavy loads. Firstly, to reduce the impact of ore on the weightless feeder, the traditional approach is to reduce the inclination angle of the rear wall of the silo through experiments based on the specific situation of each unit. However, this approach will prevent the material from sliding smoothly and have adverse effects on production. This approach not only does not affect production, but also solves the impact problem, The particle size of the ore fed into the silo can be limited, such as being less than 800 millimeters, and there must be certain requirements for the thickness of the rear of the weightless feeder, such as being more than 1 meter; Secondly, it is also possible to enhance the impact resistance of the weightless feeder by strengthening the supporting crossbeam at the rear of the weightless feeder and enhancing the impact resistance of the sliding rail at the rear of the weightless feeder; Thirdly, it can also be improved by checking the starting ability of the main motor of the weightless feeder. After general force analysis, the results show that the main reason why the weightless feeder cannot start under heavy load is because the starting torque of the main motor of the weightless feeder does not match the load torque. Therefore, the main motor of the weightless feeder has been replaced, and a weightless feeder main motor that is both economical and can meet the requirements of heavy-duty starting can be selected.

Currently, improvements are generally made in several aspects, such as setting valve plates, improving limestone feeding slots, and setting grids, for belt scale crushing and belt wear. On both sides of the pouring groove, one can be set up for up and down movement

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