The conveyer belt winds about the transmission drum and the turnabout drum in the tail part to form an annular sealing belt. The supporting rollers are used for bearing the conveyer belt and the materials being transported on it. The tension device enables the conveyer belt to have adequate tensile force, so that friction force occurs between the tension device and the transmission drum to avoid slipping of the conveyer belt. During working, the transmission drum is driven by a speed reducer to drive the conveyer belt through a tooth profile, thus the materials enter from a feeding device to move along with the conveyer belt, and they reach the discharge port via a certain distance to shift to the next process.

It adopts a groove type for the upper supporting roller, which facilitates to bear loose materials. It adopts a V type for a return roller, which can effectively avoid off tracking of a belt conveyor. The installation of lower flat supporting rollers in the front and the rear parts of a nonleaded cleanser is in favor of clearing materials.

It adopts a screw tension device and a heavy hammer tension device for tensioning the conveyer belt, wherein the screw tension device also can adjust off tracking of the belt conveyor.

The guide chute is mounted along the full length of the conveyer belt on two sides of the working face of the conveyer belt. The guide chute is composed of trough plates and rubber plates in a combination form, wherein the rubber plates are contacted with the conveyer belt to form a groove shape section, so that the function of increasing a delivery value is realized, and the materials are also prevented from falling. It adopts the compaction form of bolts and pressing plates for the fixation mode of the guide chute plates and the rubber plates, drilling is not required for the rubber plates, and meanwhile the rubber plates are conveniently adjusted according to the wear pattern of the rubber plates, so that the rubber plates are maintained in a sealing status with the conveyer belt.

A head cleanser and a nonleaded cleanser are mounted in the head and the tail parts of the conveyor. The head cleanser is of a heavy hammer and scraper type structure, and it is arranged below the transmission drum for clearing sticking materials on the working face of the conveyer belt. The nonleaded cleanser is of a scraper type structure, and it is installed above the non-working face close to the tail part of the conveyer belt for eliminating materials on the non-working face of the conveyer belt.

It adopts a polyester canvas belt for the conveyer belt, which has the characteristics of oil, acid and alkali resistance. It adopts a vulcanized joint, and the safety factor of the joint is 10 to 12.

Installation and Debugging

● The supporting legs, columns or platforms of the conveyor should be securely fixed onto the ground with chemical anchor bolts.

● All the mounting bolts for various parts of the rack should be tightened. Each supporting roller can be freely revolved. The axes of the supporting rollers, the transmission drum and the turnabout drum should be perpendicular to the longitudinal center line of the rack.

● All the mounting bolts for various parts of the rack should be tightened. Each supporting roller can be freely revolved. The axes of the supporting rollers, the transmission drum and the turnabout drum should be perpendicular to the longitudinal center line of the rack.

● The spiral tensioning stroke should be 1% to 1.5% of the conveyor length.

● The rubber scrapers of the cleansers and the guide chute should be completely contacted with the conveyer belt, otherwise the mounting bolts of the cleansers and the guide chute should be adjusted to enable the scrapers to be contacted with the conveyer belt.

● Carry out no-load commissioning after correction installation. The commissioning time should be not less than 2 hours, and it should carry out the following inspections:

1. The supporting rollers should be contacted with the conveyer belt, and they can freely revolve.

2. There is no oil leakage in each lubrication part.

3. There is no loosening for each fastener.

4. The temperature rise of each bearing should be not greater than 40°C, and the maximum temperature should not exceed 80°C.

5. During normal operation, the conveyor should stably operate, and there should be neither off tracking nor abnormal noise.

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