The setting range of tension force should be reasonably determined. If the setting range of grinding pressure is narrow, it will not only weaken the buffer capacity of ultrafine vertical mill in hydraulic system, but also make the high-pressure oil pump of hydraulic station start and stop frequently in a short time, which will cause the high-pressure motor to burn down in serious cases. Generally, reasonable grinding pressure parameters should be determined according to the abradability of materials.

Check and clean the hydraulic valve (and pressure relief valve). The hydraulic valve belongs to the precise parts, and the pressure relief will be caused once there is debris in the valve port.

In a word, it is one of the main ways to reduce system failure and improve grinding efficiency of mill to use and maintain hydraulic system correctly and keep hydraulic system running well.

Nitrogen must be used for charging the accumulator. It is strictly forbidden to replace it with other gases. Before filling nitrogen, the remaining air in the ultrafine vertical mill shall be removed. Otherwise, the mixture of air and nitrogen will easily cause the burst of ling. According to relevant standards, the general inflation pressure is controlled in 60% - 70% of the system working pressure.

During normal production, it is required to check nitrogen of accumulator once a week. When the vertical mill is inflated, the ling expands at the upper part with large diameter and thin wall, then expands to the lower part, pushes the ling outward to the side wall of the shell, and the vertical mill is filled with the whole container, and the friction between the outer wall of the ling and the inner wall of the shell is large.

Therefore, during installation, the hydraulic oil shall be applied to the outer wall and inner wall of the shell of the ling to reduce the friction between the ling and the inner wall of the shell, and protect the ling. Before removing the accumulator, the pressure oil in the accumulator must be removed, and then the nitrogen in the leather bag can be released by the filling tool before the other parts can be removed.

Compared with ordinary linings, the heat resistance and strength of composite linings have been greatly improved. Especially in service life, the composite lining is twice the function of traditional lining, which greatly improves the economic benefits of enterprises.

In addition, the composite lining has low noise, low weight and is easy to be popularized, but lacks practice. However, it has broad market prospects and has great development space in dealing with aging and wearing of lining.

In conclusion, in order to deal with such problems as the wear of lining plate of vertical roller mill, it is necessary to analyze the reasons for the wear of lining plate and put forward corresponding measures.For example, reasonable selection of steel balls and lining plates, control of the running state of the vertical roller mill, use of new material lining plates, etc., thus reducing unnecessary losses in operation.Welcome to leave a message to communicate your problems.

Compared with ordinary linings, the heat resistance and strength of composite linings have been greatly improved. Especially in service life, the composite lining is twice the function of traditional lining, which greatly improves the economic benefits of enterprises.

In addition, the composite lining has low noise, low weight and is easy to be popularized, but lacks practice. However, it has broad market prospects and has great development space in dealing with aging and wearing of lining.

In conclusion, in order to deal with such problems as the wear of lining plate of vertical roller mill, it is necessary to analyze the reasons for the wear of lining plate and put forward corresponding measures.For example, reasonable selection of steel balls and lining plates, control of the running state of the vertical roller mill, use of new material lining plates, etc., thus reducing unnecessary losses in operation.Welcome to leave a message to communicate your problems.

Material and heat treatment process of liner directly determine the mechanical properties of liner and will have an important impact on the wear of liner.If the lining material is not properly selected and the heat treatment process is unreasonable, the fatigue strength and service life of the lining will be greatly reduced, which will not meet the requirements of grinding operation of vertical roller mill, and even cause some problems such as plastic deformation and drum.

Heat treatment of lining plate is an important way to reduce wear of lining plate of vertical roller mill. Therefore, proper heat treatment process should be selected according to the material of lining plate.However, in actual work, the relevant staff lacks the knowledge of lining material, so in heat treatment, the processing of lining is not enough, which not only does not play a strengthening role, but also makes the strength of lining lower. When hit by steel balls and materials, plastic deformation will occur.

Grinding machine is widely used in grinding of mineral products in metallurgy, building materials, chemical industry, mines and other fields. According to the fineness of the plastic and the fineness of the material, the grinding machine can be divided into many kinds, such as Raymond grinding, superfine grinding, trapezoidal grinding, etc.

The production efficiency of vertical roller mill directly affects the profit of the manufacturer. For the factors affecting the production efficiency of the ultrafine vertical mill, more attention must be paid to it in the production. Today, we will discuss with you what factors affect the efficiency of the ultrafine vertical mill.

Material hardness is an important factor affecting the production efficiency of vertical roller mill. The harder the material, the more difficult it is to process, and the more serious the wear of the equipment.

When the user demands the higher the particle size of the finished product, the smaller the grinding ability of the grinder. Because the material needs to be ground in the grinder for a longer time, the finished products produced in the same time are relatively small and the production efficiency is reduced. If you have high requirements for the material discharging granularity, you can add other equipment according to your own production capacity and economic strength to ensure the production efficiency.

Besides the external factors described above, there are also some internal factors that will also affect the production efficiency of the grinder, such as improper operation of the operator and insufficient lubrication of the equipment. In the actual production, we should avoid these problems in time according to the actual situation, so as to improve the production efficiency of ultrafine vertical mill and ensure the economic benefits of the enterprise.

The wear of the nozzle ring and damage to the upper cover of the nozzle ring cause the wind speed in vertical roller mill to not reach the design wind speed, and the material cannot be lifted in time, causing spitting.

The grinding disc ring is severely worn, the gap is enlarged, and the air leakage is serious, causing slag spitting.

The guide cone is severely worn and cannot effectively play the role of guiding logistics and airflow.

The grinding roller skin and the grinding disc liner are severely worn, which causes the grinding pressure to drop, the grinding effect is not good, and the internal circulation load of vertical roller mill increases and causes slag spitting.

According to the actual situation, disengage the automatic grinding group when necessary, manually control the amount of coal, stabilize the load and steam temperature and vapor pressure. Immediately contact the coal handling duty officer to check the coal level of the original coal hopper to determine whether the original coal hopper is empty;

When the coal vertical roller mill is not tripped and the raw coal enters the coal vertical roller mill intermittently, the coal vertical roller mill must be cut to manual adjustment in time, strictly control the outlet temperature not to exceed 80 ℃, and put in fire-fighting steam when necessary to avoid air dust caused by the broken coal The ratio imbalance causes dust explosion in the coal vertical roller mill;

Strengthen the combustion adjustment, put oil in time for unstable combustion, start the backup coal vertical roller mill in time according to the load, and pay attention to the change of the main steam pressure and main steam temperature of the boiler.

The barrel is an important part of the vertical roller mill, and the price is relatively expensive. After the liner is installed in the barrel, the barrel will not directly bear the impact and grinding of the grinding medium and the material to be ground, thereby protecting the barrel and extending the barrel and the entire The service life of the equipment. The lining board and the cylinder body are tightly combined, and also play a role in enhancing the rigidity of the cylinder body.

In other words, the automatic grading liner can gather the larger steel balls in the same grinding bin at the feed end of the bin to smash larger pieces of material, and at the same time make the smaller steel balls gather at the discharge end of the bin.