Conveyor roller is an important part of a belt conveyor, with many types and large quantities.Conveyor roller is to support the conveyor belt and the weight of the material.And conveyor roller accounts for 35% of the total cost of a belt conveyor,produces more than 70% of the resistance,and reduces the conveyor belt friction.Although the conveyor roller is a smaller parts of the belt conveyor, the quality of the conveyor roller is particularly important.
According to the materials, conveyor roller can divide into steel roller, rubber roller, HDPE roller, and nylon roller.According to the effect,conveyor roller includes troughing carrier roller. impact roller,return roller,rubber disc return roller, self aligning idler roller, sprial return roller.
1:Troughing carrier roller is used for conveying bulk handling materials.The angle of troughing carrier roller is usually 25°30°35°45°.Troughing carrier roller is widely used in the outdoor with dust and high corrosive environment, such as mining,power plants, steel mills,quarry plant,cement plant, coal plant, salt mills,fertilizer plant,the prot,etc.Troughing carrier roller has the characteristics of corrosion resistance, so acid and alkali salt are difficult to corrosion effect on it. Troughing carrier roller is strong hardness strong and high resistance to wear.Troughing carrier roller is high quality with good seal.Troughing carrier roller is fully sealed,with labyrinth seal.The flattering oil will not let out.Troughing carrier roller is smooth surface, can reduce the friction caused by the contact with the conveyor belt.Troughing carrier roller is long service life, can make the belt not run deviation,prolong the service life of the conveyor belt.
2: Impact roller is installed on the conveyor below section, reduce the impact when the blanking material drop on the conveyor belt,in order to prolong the service life of conveyor belt.Impact roller’s spece is usually 100-600 mm.Impact roller is a kind of roller mainly developed for coal, coking plant, chemical plant and other corrosive environment.Impact roller has the toughness is 10 times more than ordinary metals,corrosion resistant flame retardant, anti-static electricity,and light weight.Impact roller is widly used in mining.For the installation of impact roller, one is to improve the density of installation;Second,check and replace timely of the damaged roller.For blanking gap bigger conveyor belt, we suggest to install buffer gas lock, and imapct roller is insteaded for impact bed.In the choose and buy impact roller, according to the characteristics , please pay attention to the following,roller radial runout, roller flexibility, momentum, roller dustproof performance, waterproof performance, supporting roller bearing performance, rollers shock resistance etc.For the impact roller temperature protection,the drum of belt conveyor and belt friction makes the temperature overrun, close to the drum of installation of the detector signal overtemperature, after receiving the signal receiver, the 3s delay, make the part of the action, to cut off the motor power supply, automatic conveyor stalling, temperature protection effect.For roller set speed protection,if there are obstacles of the conveyor, such as motor burned, mechanical transmission parts damage, belt or chain snap, belt creep, etc., installed on the conveyor passive parts of accident sensor magnetic control switch in the SG cannot be closed or not according to normal speed closed when the control system will be effected according to the inverse time characteristics after a certain delay, speed protection circuit, make the part of the action, to cut off the motor power supply, in order to avoid accidents.