The transmission principle of the sidewall belt conveyor is similar to that of the ordinary belt conveyor. The main difference is in the structure and form of the conveyor belt. In addition, the parts of the bend drum and the return supporting roller are also different.This article will introduce the common problems and solution of sidewall belt conveyor in daily use.
1) Belt crack problems
The sidewall belt appear sidewall serious wear and crack and basebond after running a period of time, by the analysis of the reasons for this phenomenon is: (1) the original design variable angle round of big and small wheel structure, under the same speed, small wheel rim linear velocity, caused in the process of small block edge rim pull damage; (2)The original design only sets the return short belt roller, which can only support the outside of the base belt. Due to insufficient transverse rigidity, the deformation of the conveyor belt is gradually aggravated, resulting in tearing phenomenon.
Measures taken: (1) change the round angle changed structure, overloading angle changed into many roller arc roll edge structure, no-load variable Angle round wheel bearing installation, flush with the big wheel produces relative rotation does not produce drag belt phenomenon (2) to increase the return long belt roller, long and short support belt roller at the same time hold wavy guard outside and baseband, and adopts elastic structure, thick the two with the roller spacing for uniform adhesive tape as a whole.
2) Coal dumping problem
The original design of the heavy load variable angle wheel structure, due to the structural limitations, the diameter of the variable Angle wheel is limited, and no effective transition measures have been taken.
When the conveyor belt is running, it suddenly changes direction and the radius of running curvature is small, and the coal is thrown seriously under the action of inertia force and centrifugal force.
Measures taken: Using multi-roller arc slide structure instead of the original ordinary Angle changing wheel, belt running curvature radius increased by more than 3 times. to make the belt transition angle changing stable, effectively solve the problem of coal throwing.
3) Coal loading effect
The sidewall belt with the same parameters is found in use. The dip volume of 90°and 60° is reduced by 1/3. The main reasons are as follows: (1) at 90° Variable Angle section coal dumping; (2) The transition from the heavy load flat section to the vertical section forms a natural stacking Angle, and part of the coal rolls off. Under the action of the diaphragm, the front edge sags, which aggravates the coal rolls off.
Measures taken: (1) the structure of the variable Angle wheel was changed to reduce the coal dumping. (2) The stiffness of the diaphragm was increased, and the connection mode was adopted with the wave edge to change the flat plate form to the outer end to the front 30 Angle to increase the coal accumulation Angle; (3) Under the premise of not changing the base band size of the frame structure, the width and height of the wave edge should be appropriately increased, and the number of diaphragm should be appropriately increased.
After taking the above measures, the loading effect of sidewall belt conveyor is obviously improved, and the measured transportation volume is increased by 40%.
4)Coal sticking problem
Sidewall belt conveyor because of its groove bucket structure characteristics, and the raw coal inevitably water, in the diaphragm and wavy retaining edge and base zone transition Angle, especially prone to the phenomenon of coal sticking, and the higher the accumulation, not easy to fall off by itself, is the use of wavy retaining edge conveyor to transport coal to solve the problem.
Measures to be taken: Install the electric beater at the appropriate position behind the unloading point of the sidewall belt conveyor, and beat the back of the vibration return belt continuously according to the adjusted frequency to make the bonded coal fall off, with ideal effect. The successful application of wave-shaped retaining edge large dip Angle conveyor in our coal preparation plant not only solves the problem that there is no space to install the common belt in the expansion project, but also omits the truss corridor to install the belt, reduces the capital by 40%-50%, and fully shows the superiority and economy of the wave-shaped retaining edge conveyor with large dip Angle. It can be widely used in the transformation project of mine surface production system, such as the upper silo belt system of the new mine coal storage bunker, the continuous transportation between different elevations in the underground coal mine, so as to achieve the purpose of reducing links and improving traffic volume.
