What Is a Scrap Conveyor?

The waste conveyor is the main equipment for conveying waste. The most commonly used in the waste transportation process are plate conveyors, chain conveyors and belt conveyors.

mainly divided:

The conveying chain plate is stamped and formed. The width of the chain plate can be customized according to customer requirements. The pitch of the conveying chain on both sides can be selected from 25.4-100. The chain plate runs on non-standard guide rails, which has the advantages of stable operation, strong load capacity, and oil resistance. The frame is made of non-standard plates or profiles, the guide rails are made of national standard profiles, the chain plates are stamped and formed, and the labyrinth structure is used to ensure that the small materials in the chain plate cannot jam the joints of the conveyor belt during the conveying process. 0.5mm power, horizontal motor, linear speed variable frequency speed regulation (optional), the fastest linear speed can reach 30 meters / minute. It is the first choice for conveying stamped parts, scraps, hardware, fasteners, and metal parts ^[2]

The installation of the belt conveyor is generally carried out in the following stages:

(1) Frame for installing belt conveyor

The installation of the frame starts from the head frame, then installs the middle frame of each section in sequence, and finally installs the tail frame. Before installing a rack, first pull the centerline over the entire length of the conveyor. Keeping the centerline of the conveyor on the straight line is an important condition for the normal operation of the conveyor belt, so when installing each section of the rack, you must Align the center line, and also level the rack. The allowable error of the rack to the center line is ± 0.1mm per meter. However, the error of the center of the rack over the entire length of the conveyor must not exceed 35mm. After all the single sections are installed and correctly located, the individual sections can be connected.

(2) Install the driving device

When installing the driving device, care must be taken to make the transmission shaft of the belt conveyor perpendicular to the centerline of the belt conveyor, make the center of the width of the driving roller coincide with the centerline of the conveyor, and the axis of the reducer parallel to the transmission axis. At the same time, all shafts and rollers should be leveled. The horizontal error of the shaft is allowed in the range of 0.5-1.5mm according to the width of the conveyor. When the driving device is installed, a tensioning device such as a tail wheel can be installed. The roller axis of the tensioning device should be perpendicular to the center line of the belt conveyor.

(3) Install the supporting roller

After the frame, transmission and tensioning device are installed, the upper and lower idler roller racks can be installed to make the conveyor belt slowly bend, and the interval between the idler rollers in the turning section is 1 / 2 to 1/3. After the rollers are installed, they should be flexible and brisk.

(4) Final alignment of the belt conveyor

To ensure that the conveyor belt always runs on the centerline of the rollers and rollers, the following requirements must be met when installing the rollers, racks and rollers:

a. All the supporting rollers must be lined up, parallel to each other, and kept horizontal and horizontal.

b. All the rollers are lined up parallel to each other.

c. The supporting structure must be straight and horizontal. For this reason, after the installation of the driving roller and the roller frame, the centerline and level of the conveyor should be finally adjusted.

d. Then fix the rack to the foundation or floor. After the belt conveyor is fixed, feeding and unloading devices can be installed.

e. Hanging the conveyor belt. When hanging the conveyor belt, first lay the conveyor belt strip on the idler section of the idler roller, surround the drive roller, and then apply it on the idler section of the idler roller. Hanging belt can use 0.5-1.5t hand winch.

When tightening the strap for connection, the roller of the tensioning device should be moved to the extreme position, the trolley and the spiral tensioning device should be moved toward the transmission device; and the vertical picking device should be moved to the top . Before tightening the conveyor belt, the reducer and motor should be installed, and the braking device should be installed on the inclined conveyor. After the belt conveyor is installed, an idling test machine is required.

In the idling test machine, pay attention to the deviation of the conveyor belt during operation, the operating temperature of the driving part, the movement of the rollers, the tightness of the contact between the scanning device and the guide plate and the conveyor belt surface. Make the necessary adjustments and test the machine with load only after all components are normal. If a screw-type tensioning device is used, when the test machine is running under load, its tightness must be adjusted again.

The conveyor should generally be started under no-load conditions. When several belt conveyors are installed in sequence, a lockable starting device should be used in order to start and stop in a certain order through the central control room.

In addition, in order to prevent unexpected accidents, each conveyor should also be equipped with on-site start or stop buttons, which can stop any one of them individually. In order to prevent the conveyor belt from being torn longitudinally for some reason, when the conveyor length exceeds 30m, a stop button should be installed at a certain distance (such as 25-30m) along the entire length of the conveyor.

In order to ensure the reliable operation of the belt conveyor, the most important thing is to find and eliminate the possible faults in time. To this end, the driver must observe the working condition of the transport aircraft at any time, and if any abnormality is found, it should be handled in time. It is important that mechanics regularly inspect and inspect any situation or component that requires attention. For example, a roller is not very important, but a high-speed conveyor belt that transports worn materials may quickly wear through its shell, and a blade may appear, which may seriously damage an expensive conveyor belt. Trained workers or experienced staff can detect impending accidents in time and prevent them before they occur. The conveyor belt of a belt conveyor accounts for a considerable proportion of the entire conveyor cost.

In order to reduce the cost of replacing and repairing the conveyor belt, we must attach importance to the training of operators and maintenance personnel on the operation and maintenance knowledge of the conveyor belt ^[3] .