If the conveyor belt is broken, it is recommended to use cold vulcanized joints or hot vulcanized joints. Do not use large belt buckles. If the belt buckle parts pass through the sweeper, it will easily cause secondary damage. In severe cases, the conveyor belt will be torn for a long distance. .
The conveyor belt cold vulcanization joint is a cold vulcanization bond to the conveyor belt part by means of the cold vulcanization adhesive SK313, but only for nylon canvas conveyor belts. The steel belt conveyor belt and the PVC whole core flame-retardant conveyor belt must be made of heat-cured joints.
The hot vulcanized joint is used to pass the part of the conveying belt through the vulcanizing machine, and the conveying belt is subjected to high temperature and high pressure vulcanization to achieve the purpose of the joint. The materials used include core rubber, surface rubber and hot vulcanized rubber SK823. The hot vulcanized joint has a high vulcanization bond strength, but the vulcanization time is relatively long, and a large vulcanization apparatus is installed on the conveyor belt.
Rubber conveyor belt (also known as rubber conveyor belt) is the most common material conveying equipment in industrial production, and is widely used in various processes of material transportation. During the use of the conveyor belt, the most common problems are: foreign object scratches, local foreign body damage, wear, perforation, and the like.
First, the cause of rubber conveyor damage
1. During the falling process of the ore, the vibration impact causes the fastener to loosen and fall off, causing the falling coal pipe liner and the guide plate to fall.
2. Foreign matter is mixed into the material, the foreign matter is hard and angular, and the coal tube is clogged and squeezed.
3. The roller is missing, and the roller frame causes scratches.
4. The conveyor belt is severely eccentric and is hung by the frame.
5. The cleaner is rolled into the drum (return sweeper), the bolts are loose, and there is a precursor to bouncing.
6. The high-strength continuous impact causes the joint between the lying roller and the side roller to break, and the horizontal roller rises to damage the belt.
Second, the rubber belt repair method comparison
1. Traditional repair method for rubber conveyor belt
Hot vulcanized gluing connection: its advantages are high bonding strength, can reach 90% of the original tape; the joint is flat, no impact; the flexibility is relatively good. The disadvantage is that the heat source is high in vulcanization, the equipment is heavy and unfavorable for handling; the process is complicated, the time is long, and the environment temperature and humidity are greatly affected. Moreover, the vulcanized portion of the joint is prone to cracking.
Mechanical connection: The advantage is that the operation is simple, fast and inexpensive. The disadvantage is that the strength of the tape joint is weakened, only 35 %.-45% of the original tape, easy to fatigue damage, short service life, and the joint is not flat. The impact on the roller is serious in the operation, accompanied by leakage. problem.
2, Fu Shilan polymer composite material repair rubber conveyor belt
The cold bonding method of foreign advanced polymer rubber materials introduced by Fu Shilan Company is the most effective solution for repairing rubber conveyor belt scratches worldwide: the advantage is simple construction, no special tools, and aging resistance and wear resistance. Far higher than the polyurethane belt itself, the overall cost-effective. On-site repair can be put into production immediately after one hour.
Fusit Blue polymer rubber repair technology has achieved remarkable results in repairing damaged products such as rubber, polyurethane liner, conveyor belt, pulley, and insulation. And it has the characteristics of wear resistance, anti-corrosion, strong flexibility, high elasticity, strong adhesion, self-leveling without any sag phenomenon, convenient construction and environmental protection.
Third, the rubber belt damage repair case
Case 1: Rubber belt damage on-site repair
The damaged size is about 1 cm deep and the width is about 1.5-2 cm. According to the calculation, the length of the 2 kg material can be repaired by about 6 meters.
a. Polish the inner and outer surfaces of the damaged part of the rubber belt with a polishing pad and a wire wheel.
b. After cleaning the debris with a brush, wipe off the cleaned surface with alcohol.
c. Brush the Fushun Blue M20 pretreatment agent on the inner and outer surfaces. (white after 10 seconds, the outer surface extends 5cm)
d, 3333 rapid rubber repair material is preheated and melted and filled into the inner surface groove, and is scraped and flattened from the inner and outer sides by a hot air gun scraper.
e. Follow the hot air gun melting material to fill all the potholes, and use a hot air gun to scrape and trim.
f. After the repair is completed, clean the material of the high point and the edge of the outer surface of the groove.
Case 2: Rubber conveyor belt scratch damage repair
Case 3: Rubber belt damage repair