In the process of using nylon conveyor belt, the phenomenon of rubber layer aging and shedding is simple. Baoding Hangda Rubber Belt Co., Ltd. has discussed the factors that cause rubber aging in the following aspects:

1) Oxygen: Oxygen reacts with the free radical chain of rubber molecules in the rubber, and the molecular chain is cracked or excessively cross-linked, causing the rubber function to change. Oxidation effect is one of the important reasons for rubber aging.

2) The chemical activity of ozone and ozone is much higher than that of oxygen, and it is more damaging. It also causes the molecular chain to crack, but the effect of ozone on rubber varies with whether the rubber is deformed or not. When the effect is on deformed rubber (mainly unsaturated rubber), cracks that are perpendicular to the direction of the stress effect appear, so-called "ozone cracks"; when the effect is on deformed rubber, only an oxide film is formed on the outer surface without cracking.

3) Heat: Increasing the temperature can cause thermal cracking or thermal crosslinking of the rubber. But the fundamental effect of heat is still the activation effect. Increase the oxygen diffusion rate and activate the oxidation reaction, thereby accelerating the rubber oxidation reaction speed, which is a common aging phenomenon-thermal oxygen aging.

4) Light: The shorter the light wave, the greater the energy. The damage to the rubber is the higher energy ultraviolet rays. In addition to ultraviolet rays can directly cause the cracking and cross-linking of the rubber molecular chain, the rubber generates free radicals due to the absorption of light energy, which initiates and accelerates the reaction process of the oxidation chain. Ultraviolet light has a heating effect. Another feature of the light effect (different from the thermal effect) is that it mainly grows on the outer surface of the rubber. Samples with high gel content will show network cracks on both sides, the so-called "light outer layer cracks".

5) Mechanical stress: under the repeated effects of mechanical stress and the continuous friction process between the conveyor belt and the idler roller, the rubber molecular chain will crack and generate free radicals, trigger the reaction of the oxidation chain, and form a mechanochemical process. Mechanical cracking of molecular chains and mechanical activation of the oxidation process. Which one can prevail depends on the conditions in which it is located. In addition, it simply causes ozone cracking under the effect of stress.

6) Moisture: The effect of moisture has two aspects: rubber is simply damaged when it is exposed to rain or immersed in water in humid air. This is because the water-soluble substances and clear water groups in the rubber are extracted and dissolved by water. Caused by hydrolysis or absorption. Especially under the alternating effect of water immersion and atmospheric exposure, it will accelerate the damage of rubber. However, under certain conditions, moisture has no damaging effect on rubber, and even has the effect of delaying aging.

7) Others: The effect factors on rubber include chemical media, variable metal ions, high-energy radiation, electricity and biology.

The idler in the belt conveyor machinery is mainly used to support the conveyor belt and reduce the running resistance. Due to its different assembly form, it will affect the conveying capacity of the conveyor. In addition, the idler is a large number of parts in the belt conveyor. Its structure, shape and assembly method have a great influence on the normal operation, use effect, production investment and operating cost of the belt conveyor.

The number of beams of the individual rollers in the branch roller group on the belt conveyor is different. At present, the common one is a group of three. The assembly structure of the upper branch roller group is generally trough type, which is mainly caused by It is composed of three rollers of equal length. This form is mainly used to reduce the impact of the bulk material on the supporting rollers on both sides when conveying bulk materials, so as to extend the service life of it and the industrial transportation belt. At the same time, the structure of the supporting rollers is also considered. Uniform form and interchange in use, but this isometric structure does not consider the impact of materials with different accumulation angles on the conveying capacity of the belt conveyor. It is conveying granular materials such as pulverized coal, grains, sand and chemical products. At this time, we should improve the conveying capacity of the belt conveyor and prolong the service life of the idler. Therefore, it is necessary to start from the length of the intermediate idler to analyze the influence on the conveyor capacity of the conveyor to find the use length of the intermediate idler of the conveyor belt. .

As far as the conveying capacity of the conveyor is concerned, the length of the intermediate roller should be appropriately shortened, and the advantages of shortening the length of the intermediate roller, in addition to improving the conveying capacity, can also reduce the load borne by the intermediate roller, thereby extending it When the groove angle of the side roller is 30 degrees, the load on the middle roller is 70% of the total load, and the load on each side roller is only 14.5% of the total load. , It can be seen that when conveying large materials such as raw coal, it is more reasonable to use equal-length rollers, but for conveying granular materials such as pulverized coal, grain, sand and chemical products, a shortened intermediate roller is used. The length is reasonable.

The length of the intermediate roller will gradually decrease with the increase of the dynamic accumulation angle of the material and the increase of the groove angle of the side roller. When conveying bulk granular materials, if the required industrial conveyor belt bandwidth is not too large, it can be known that The range value between the intermediate rollers, so if the belt width you need is less than one meter, including one meter, you can appropriately widen the gap between the two rollers and cancel the intermediate roller to form a double roller group. The existing belt conveyor adopts a double roller set for this reason. The load on each roller is smaller than when three rollers are used, and the service cycle will increase accordingly.

Due to the continuous increase in the use of mining materials, the corresponding mining scale is constantly increasing. During the production process, it is necessary to ensure the normal operation of the work. Therefore, the requirements for the stable operation of the sidewall belt conveyor are also very important. We will use the belt below. The more stable operation of the machine is explained in detail.

Belt conveyors are indispensable in mining: they have the advantages of large capacity, long transmission distance, continuous transportation, etc., and can be automated and remotely controlled. Therefore, conveyor equipment has a wide range of applications, but with the rapid level of technology automation The increase and the increase in the number of mining have a higher demand for operation requirements and efficiency. In the operation and production process, a large inclination and long-distance belt conveyor machine with higher operation intensity has been invested. The current large inclination can reach 50 degrees, but it is increasing. At the same time of large inclination, special attention must be paid to the operation stability of the equipment. In addition to the equipped brake equipment, a scientific and reasonable layout is also required to make the belt conveyor equipment operate more stably.

If the belt conveyor stops transporting a large amount of mineral materials, there will be materials attached to the skirt conveyor belt, and the sliding force will cause the whole machine to slide backward, which will cause abnormal accidents. To avoid such problems, reliable protection must be configured. Inverter, this can ensure the stable operation of the large-incline belt conveyor. The prerequisite for the selection is to measure the sliding moment of the conveyor at the time of working capacity. Within ten meters from the loading point to the front of the operation, the installation angle of the tailstock and the middle frame of this section is reduced to less than 30 degrees, so that the installation angle of the whole machine is smaller than the dynamic dumping angle of the raw materials, so that the materials are waiting to be loaded. After stabilizing on the rubber belt, enter the operating condition of large inclination.

In order to avoid the problem of belt slippage when the belt conveyor is in use, a high-strength flame-retardant pattern steel wire rope core tear-resistant conveyor belt can be selected to increase the frictional resistance between the belt surface and the belt body is laid flat in a deep groove shape. For the roller group, the upper groove angle of the misaligned roller can be selected to be 60 degrees to increase the lateral squeezing force between the material and the wire rope conveyor belt and prevent the whole machine from spattering during use. According to the sidewall belt conveyor The carrying capacity needs to be equipped with an appropriate loading mechanism, and then use the hopper to select an appropriate angle according to the site conditions. The chute is designed into a spoon shape, and the blanking direction is changed to horizontal. This can ensure smoother conveying and reduce the impact on the belt. .

In addition, choose a suitable frequency conversion soft start method, and set a closed protective device on the upper belt to prevent the material rolling due to excessive inclination. A closed scraper is placed in the middle of the lower belt to prevent the material from rolling towards the machine. These tails are very important to the smooth operation of the conveyor. Reasonable protection of the tail can prevent abnormalities such as misalignment of the belt caused by debris and stones, and damage to the broken belt. We can completely seal the tail.

Increase the storage capacity to reduce the frequent operation of the belt conveyor, avoid overloading operation, strictly control the moisture of the material, prevent the mixing of water in other production and transportation links, repair the belt pattern wear, after technical analysis and field observation, the large inclination belt conveyor Due to the frictional resistance between the material and the non-slip rubber conveyor belt when running at a constant speed, the rapid increase in the sliding speed will cause the pattern part of the industrial rubber belt to wear. If it is not repaired in time, the belt will not be able to convey the material. Therefore, professional rubber should be used. Repair in time such as cold sticking method;

Conveyor belts with large inclination wavy ribs are also widely used. If you want to use the conveyor belt correctly and maintain the conveyor belt correctly, you must have a certain understanding of the conveyor belt products. Our company’s technical staff has compiled the relevant information for you The relevant knowledge of the large inverted corrugated rib conveyor belt can help you understand the conveyor belt product to a certain extent.

The large inclination corrugated sidewall belt is composed of three parts: the base belt, the sidewall and the diaphragm. The ribs mainly play the role of preventing the material from slipping and falling off. At the same time, in order to easily bypass the drum, the designer deliberately designed the ribs to be corrugated. The function of the diaphragm is to support the material. Taking into account the function of large inclination conveying, the designer also deliberately adopts the T-type TC-type diaphragm. Moreover, the ribs and the diaphragm are connected to the base belt by a secondary vulcanization method, so it has a high connection strength.

The following is a summary of the characteristics of the large inclination corrugated sidewall belt product itself:

1. Increase the conveying angle (30~90 degrees);

2. Small footprint and low investment;

3. Large conveying capacity and higher lifting height;

4. It can realize a smooth transition from horizontal to inclined (or vertical);

5. Suitable for conveying powdery, granular, small lumps, paste and liquid materials that are easy to scatter;

6. Low energy consumption, simple structure, high tape strength and long service life.

In the process of using steel cord flame-retardant conveyor belts, wear problems will inevitably occur. In order to reduce the level of wear and extend the service life, it is necessary to understand the parts that are easy to wear. The running speed of the conveyor belt should not exceed 2.5m/s. The data of large lumps, large wear, and fixed discharge device should be as low as possible. According to the design criteria of the belt conveyor, the relationship between the diameter of the transmission drum and the layer of the conveyor belt, the matching of the transmission drum and the reversing drum, and the requirements for the groove angle of the idler are reasonably selected. What are the main wearing parts of the steel wire rope core flame-retardant conveyor belt? Nowadays, the technical staff of the steel wire rope core flame-retardant transport belt manufacturer explained to customers and friends.

Due to defects in the manufacturing, installation and use of the conveyor belt, the friction between the frame and the conveyor belt will cause deflection. When the deviation is too large, the conveyor belt will come into contact with the roller frame and the frame, causing side rubber wear and even flanging of the conveyor belt. The friction between the guide groove baffle and the conveying belt, and the wear of the baffle to the conveying belt is a special kind of wear, such as the improvement of baffle design and maintenance attention, etc., this kind of wear can simply be avoided.

The friction between the idler and the conveyor belt and the bottom cover of the conveyor belt is also affected by the friction between the centering idler roller and the front chute idler. The transition section between the trough roller and the roller and the curved protrusion of the conveyor are locally worn. The friction between the cleaner and the conveyor belt, and the wear of the cleaner on the conveyor belt is usually average, but when a harder steel plate is used as a cleaning plate, if the method is improperly used, the rubber except for dirt will be cut off. When foreign matter enters between the cleaning head and the transport belt, it will leave deep scars on the entire length of the transport belt.

With the rapid development of society and technology, the speed of industrial development is particularly prominent. Conveyor belt has become an indispensable part of industrial automation consumption. As usual, the coal industry is still the main industry in our country, and the mining belt is the main equipment for the transmission and transshipment of coal materials. So, what is the difference between the mining belt and the ordinary belt? The mining belt must have sufficient strength.

The mine conveyor belt should have a sufficient width for the specific characteristics of the flowers and the conveying materials. When the core of the mining belt is exposed, it must be repaired in time. If it is broken, the damaged area must be changed immediately. Mine conveyor belts are divided into whole-core flame-retardant conveyor belts and steel wire rope-core flame-retardant conveyor belts. They have the characteristics of high strength, large capacity, and balanced transportation. At the same time, the two products have good flame retardant, antistatic, impact resistance, and Corrosion and other properties. Good corrosion resistance, resistance to various strong acids and alkalis, non-extinguishing, and aging resistance.

From the point of view of use, the mine transport belt is mainly suitable for underground transportation in coal mines, and also for material transportation in the metallurgical and chemical industries. The whole core belt can be divided into PVC type and PVG type, steel wire rope belt is divided into flame-retardant type and anti-tear type; technical request: implementation of MT914-2008, MT668-2008 specifications; in summary, the mining belt is also better than ordinary The requirements of the walking belt are higher in terms of strength, embossing, flame retardancy, and corrosiveness. When we purchase mining belts, we must look for the right manufacturer and strictly check whether the product batch number, warranty certificate and after-sale service measures are complete. Remember, do not use ordinary ones to replace mining ones!

The diameter of the transmission roller of the conveyor belt is related to the cloth layer of the conveyor belt, and the supporting equipment of the transmission roller and the reversing roller and the rules for the groove angle of the buffer idler should be effectively selected according to the requirements of the design scheme of the transport aircraft. The feeding direction should follow the operating direction of the conveyor belt. In order to reduce the impact of the raw material on the conveyor belt, the runner should be used to reduce the rugged distance of the raw material; the conveyor belt receiving section should reduce the distance of the buffer roller and use the buffer buffer roller as For overflow, the conveyor belt is suitable for selecting soft and appropriate baffle plates to prevent the thick baffle plates from scratching the nylon conveyor belt surface of the conveyor belt.

Avoid starting with load. The direction deviation of the heat-resistant conveyor belt should be corrected immediately by certain effective methods. Conveyor belts of different varieties, specifications, and superimposed layers are not suitable to be used together, and their connectors are glued. The variety, structure, specifications, and number of layers of the conveyor belt should be effectively adopted in accordance with the application specifications. The operating speed of the conveyor belt is generally not suitable for exceeding 2.5m/s. The raw materials with large lumpiness and abrasion and the unmoving equipment using fixed pears should be used as low as possible.

When the belt conveyor is in use, if there is a shortage of buffer rollers, they should be added and repaired immediately; the buffer rollers are concealed by the raw materials, resulting in insensitive rotation, avoiding the overflow of material stuck in the center of the drum and the tape, pay attention to the theme activities of the conveyor belt Part of the lubrication, but not oily conveyor belt.

The flame-retardant conveyor belt is different from other layered nylon canvas conveyor belts and steel cord conveyor belts.

So when the flame-retardant conveyor belt is scratched, damaged, or jointed, be cautious and never use iron wire or belt buckles to simply repair the trouble. Because the above methods are used to repair the whole core flame-retardant conveyor belt, it is very easy to induce secondary damage to the whole core flame-retardant conveyor belt, or even longitudinal tear instead.

Flame-retardant conveyor belt is a quick way to repair scratches, breakages, etc.

The effective way to replace the flame retardant conveyor belt with scratches, breakages and other damages is to use RAMIMTECH cold vulcanization bonding to repair.

The specific operation steps are as follows:

Polish the surface of the conveyor belt, and the depth of polishing must be higher than the height of the repair strip.

Clean and polish the surface of the conveyor belt to ensure that there is no dirt and debris on the polished surface of the conveyor belt.

Warm reminder: If it feels like dry but not dry, you can touch the bonding surface with the back of your finger. If it feels like sticky or not dry, you can start the bonding repair.

4. Use compaction rollers to roll and bond the RIT repair strip from one side to the other, which can effectively prevent air from entering and improve the bonding strength of the repaired part.

5. Apply adhesive once along the edge seam of the bonding surface to block the small seams.

Note: If the conveyor belt is cut through, the same method can be used to paste the RIT repair strips on the upper and lower sides.

For flame-retardant conveyor belt thermal vulcanization joints, it is necessary to choose a regular unit and use better materials for bonding. Inmate flame-retardant conveyor belt thermal vulcanization joint material is a good choice, using regular flame-retardant conveyor belt thermal vulcanization joints The material can effectively prevent the joints of the conveyor belt from pulling.