1、 Startup and shutdown: the conveyor shall be started under no-load condition generally. When several belt conveyors are installed in sequence, the lockable starting device shall be used to start and stop in a certain order through the central control room. Teflon conveyor belt In addition, in order to prevent accidents, each conveyor should also be equipped with a local start or stop button, which can stop any one separately. To prevent Conveyor belt If it is longitudinally torn for some reason, when the length of the conveyor exceeds 30m, a stop button should be installed at a certain distance (such as 25-30m) along the whole length of the conveyor.
2、 Maintenance of belt conveyor: in order to make the belt conveyor operate reliably, the main task is to find and eliminate possible faults in time. For this reason, the operator must observe the working condition of the conveyor at any time, and deal with any abnormality found in a timely manner. It is very important that the machinist should regularly patrol and check any conditions or parts that need attention. For example, an idler is not very important, but the high-speed conveyor belt conveying worn materials may soon wear its shell through, and a blade may seriously damage an expensive conveyor belt. Trained workers or experienced staff can find the impending accident in time and prevent it before it happens. The conveyor belt of belt conveyor accounts for a considerable proportion in the whole conveyor cost. In order to reduce the cost of replacing and maintaining the conveyor belt, attention must be paid to the training of operators and maintenance personnel on the operation and maintenance knowledge of the conveyor belt. Table l-40 lists a large number of reasons and solutions for operation problems of conveyor belts. The causes of belt conveyor failure and its elimination methods.
Teflon conveyor belt
3、 Belt conveyor installation Belt conveyor installation is generally carried out in the following stages.
1) The installation of the rack and frame of the belt conveyor starts from the head frame, then the middle frame of each section is installed in sequence, and then the tail frame is installed. Before installing the rack, first pull the center line over the entire length of the conveyor. Since keeping the center line of the conveyor on a straight line is an important condition for the normal operation of the conveyor belt, when installing each section of rack, it must be aligned with the center line, and at the same time, it must be leveled by erecting the rack. The allowable error of the rack to the center line is ± 0.1mm per meter of machine length. However, the error to the center of the rack on the whole length of the conveyor shall not exceed 35mm. After all single sections are installed and aligned, each single section can be connected.
2) Installation of drive device: When installing the drive device, attention must be paid to making the drive shaft of the belt conveyor perpendicular to the center line of the belt conveyor, so that the center of the width of the drive drum coincides with the center line of the conveyor, and the axis of the reducer is parallel to the drive axis. At the same time, all shafts and rollers shall be leveled. The horizontal error of the shaft is allowed to be within 0.5-1.5mm according to the width of the conveyor. When installing the drive device, the tail wheel and other tensioning devices can be installed. The drum axis of the tensioning device should be perpendicular to the center line of the belt conveyor.
3) Installation of idlers: after the installation of the rack, transmission device and tensioning device, the idlers of the upper and lower idlers can be installed to make the conveyor belt have a slowly changing arc. The spacing of the idlers in the bending section is 1/2~1/3 of the spacing of the normal idlers. After the installation of the carrier roller, make it rotate flexibly and quickly.
4) Alignment of belt conveyor: in order to keep the conveyor belt running on the center line of idler and roller, when installing idler, rack and roller,
The following requirements must be met:
1) All idlers must be arranged in rows, parallel to each other, and kept horizontally.
2) All rollers are arranged in rows and parallel to each other.
3) The supporting frame must be straight and horizontal. For this reason, after the installation of the drive drum and idler frame, the centerline and level of the conveyor should be aligned.
4) Then fix the rack on the foundation or floor. After the belt conveyor is fixed, feeding and unloading devices can be installed.
5) Hanging the conveyor belt: when hanging the conveyor belt, first lay the conveyor belt strip on the idler in the no-load section, surround the drive roller, and then lay it on the idler in the heavy load section. 0.5-1.5t hand winch can be used to hang the strip. When the tension belt is connected, the drum of the tension device shall be moved to the limit position, and the trolley and screw tension device shall be pulled to the direction of the transmission device; The vertical take-up device should move the drum to the top. Before tensioning the conveyor belt, the reducer and motor shall be installed, and the inclined conveyor shall be equipped with a braking device. After the installation of belt conveyor, it is necessary to conduct idle running test.
During the idle running test run, pay attention to whether there is deviation phenomenon during the operation of the conveyor belt, the operating temperature of the drive part, the movement of the idler during the operation, the contact tightness between the cleaning device and the guide plate and the surface of the conveyor belt, etc. At the same time, make necessary adjustments. The running test run with load can be carried out only after all parts are normal. If the screw type tensioning device is used, its tightness shall be adjusted again during the test run with load.
