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How to reduce the wear rate of pneumatic conveying?

How to reduce the wear rate of pneumatic conveying?

(Summary description)Different from other conveying methods, pneumatic conveying relies on air energy to convey materials. In order to prevent the materials from being stagnant in the pipeline, it is necessary to keep the materials moving at a certain speed. The movement in the pipeline causes the loss of the pipeline and the destruction of the material. Generally speaking, the pipeline in the straight section is less worn, and the most easily worn part should be the elbow at the conveying reversal. The degree of wear is mainly affected by the following factors: 1. The nature of the conveyed material The larger the particle size of the material, the greater the wear; the greater the specific gravity and hardness of the material, the greater the wear and tear. When the moisture content of the material increases within a certain limit, the faster the oxidation of the iron and steel material, the wear will be increased, but if the moisture content exceeds this limit, the mechanical wear will decrease, and the wear will decrease. The material is corrosive and will also wear more to the pipeline. 2. The influence of air supply The material-to-air ratio is the ratio of the quality of the conveyed material in the pipeline per unit time to the air mass required to convey the material. The larger the ratio, the more serious the wear of the pipeline. 3. The effect of conveying air velocity on wear The air velocity during conveying has the greatest influence on the wear of the pipe wall. If other conditions are the same, reducing the speed of the material hitting the wall or changing the impact angle of the material can greatly reduce the wall wear. Because wear is caused by the impact or friction of particles with the inner wall of the pipe. Therefore, the velocity of the particles is greater. The greater the energy of impact or friction, the greater the wear. Generally, the wear amount can be roughly considered to be proportional to the third power of the conveying air velocity. If the velocity of the air flow is too low, the conveyed material will deposit in the pipes and block the pipes. Therefore, reasonable selection of airflow speed is the key to ensure the normal operation of the system. 4. The influence of pipe diameter and pipe structure Select the appropriate pipe diameter according to the conveying distance and conveying materials. If the pipe is too thin, not only the conveying capacity will be reduced, but also the conveying of large specific gravity materials will be slow, and the wear will increase. The larger the radius of curvature of the long radius elbow. The more serious the impact. The more impact collision points, the greater the energy loss and the more serious the wear. also. The smoothness of the elbow is small, the greater the frictional resistance, the easier the elbow is to wear. Usually, smooth materials are selected at the elbow; if too many elbows are used, the energy consumption will be greater, the pipeline will be easily blocked and the wear of the elbow will be accelerated; the smaller the pipe diameter, the greater the resistance to the airflow, and the more serious the damage to the pipe wall. In order to reduce wear and tear, first of all, the pipeline should be reasonably designed, the inclined section of the elbow should be minimized, and the elbow should be specially designed if necessary. Keli Technology focuses on the conveying of powder and granular ingredients, and can provide you with a full service of design, manufacturing, installation and commissioning.

How to reduce the wear rate of pneumatic conveying?

(Summary description)Different from other conveying methods, pneumatic conveying relies on air energy to convey materials. In order to prevent the materials from being stagnant in the pipeline, it is necessary to keep the materials moving at a certain speed. The movement in the pipeline causes the loss of the pipeline and the destruction of the material. Generally speaking, the pipeline in the straight section is less worn, and the most easily worn part should be the elbow at the conveying reversal.

The degree of wear is mainly affected by the following factors:

1. The nature of the conveyed material

The larger the particle size of the material, the greater the wear; the greater the specific gravity and hardness of the material, the greater the wear and tear. When the moisture content of the material increases within a certain limit, the faster the oxidation of the iron and steel material, the wear will be increased, but if the moisture content exceeds this limit, the mechanical wear will decrease, and the wear will decrease. The material is corrosive and will also wear more to the pipeline.

2. The influence of air supply

The material-to-air ratio is the ratio of the quality of the conveyed material in the pipeline per unit time to the air mass required to convey the material. The larger the ratio, the more serious the wear of the pipeline.

3. The effect of conveying air velocity on wear

The air velocity during conveying has the greatest influence on the wear of the pipe wall. If other conditions are the same, reducing the speed of the material hitting the wall or changing the impact angle of the material can greatly reduce the wall wear. Because wear is caused by the impact or friction of particles with the inner wall of the pipe. Therefore, the velocity of the particles is greater. The greater the energy of impact or friction, the greater the wear. Generally, the wear amount can be roughly considered to be proportional to the third power of the conveying air velocity. If the velocity of the air flow is too low, the conveyed material will deposit in the pipes and block the pipes. Therefore, reasonable selection of airflow speed is the key to ensure the normal operation of the system.

4. The influence of pipe diameter and pipe structure

Select the appropriate pipe diameter according to the conveying distance and conveying materials. If the pipe is too thin, not only the conveying capacity will be reduced, but also the conveying of large specific gravity materials will be slow, and the wear will increase.

The larger the radius of curvature of the long radius elbow. The more serious the impact. The more impact collision points, the greater the energy loss and the more serious the wear. also. The smoothness of the elbow is small, the greater the frictional resistance, the easier the elbow is to wear. Usually, smooth materials are selected at the elbow; if too many elbows are used, the energy consumption will be greater, the pipeline will be easily blocked and the wear of the elbow will be accelerated; the smaller the pipe diameter, the greater the resistance to the airflow, and the more serious the damage to the pipe wall.

In order to reduce wear and tear, first of all, the pipeline should be reasonably designed, the inclined section of the elbow should be minimized, and the elbow should be specially designed if necessary. Keli Technology focuses on the conveying of powder and granular ingredients, and can provide you with a full service of design, manufacturing, installation and commissioning.

Information

Different from other conveying methods, pneumatic conveying relies on air energy to convey materials. In order to prevent the materials from being stagnant in the pipeline, it is necessary to keep the materials moving at a certain speed. The movement in the pipeline causes the loss of the pipeline and the destruction of the material. Generally speaking, the pipeline in the straight section is less worn, and the most easily worn part should be the elbow at the conveying reversal.

The degree of wear is mainly affected by the following factors:

1. The nature of the conveyed material

The larger the particle size of the material, the greater the wear; the greater the specific gravity and hardness of the material, the greater the wear and tear. When the moisture content of the material increases within a certain limit, the faster the oxidation of the iron and steel material, the wear will be increased, but if the moisture content exceeds this limit, the mechanical wear will decrease, and the wear will decrease. The material is corrosive and will also wear more to the pipeline.

2. The influence of air supply

The material-to-air ratio is the ratio of the quality of the conveyed material in the pipeline per unit time to the air mass required to convey the material. The larger the ratio, the more serious the wear of the pipeline.

3. The effect of conveying air velocity on wear

The air velocity during conveying has the greatest influence on the wear of the pipe wall. If other conditions are the same, reducing the speed of the material hitting the wall or changing the impact angle of the material can greatly reduce the wall wear. Because wear is caused by the impact or friction of particles with the inner wall of the pipe. Therefore, the velocity of the particles is greater. The greater the energy of impact or friction, the greater the wear. Generally, the wear amount can be roughly considered to be proportional to the third power of the conveying air velocity. If the velocity of the air flow is too low, the conveyed material will deposit in the pipes and block the pipes. Therefore, reasonable selection of airflow speed is the key to ensure the normal operation of the system.

4. The influence of pipe diameter and pipe structure

Select the appropriate pipe diameter according to the conveying distance and conveying materials. If the pipe is too thin, not only the conveying capacity will be reduced, but also the conveying of large specific gravity materials will be slow, and the wear will increase.

The larger the radius of curvature of the long radius elbow. The more serious the impact. The more impact collision points, the greater the energy loss and the more serious the wear. also. The smoothness of the elbow is small, the greater the frictional resistance, the easier the elbow is to wear. Usually, smooth materials are selected at the elbow; if too many elbows are used, the energy consumption will be greater, the pipeline will be easily blocked and the wear of the elbow will be accelerated; the smaller the pipe diameter, the greater the resistance to the airflow, and the more serious the damage to the pipe wall.

In order to reduce wear and tear, first of all, the pipeline should be reasonably designed, the inclined section of the elbow should be minimized, and the elbow should be specially designed if necessary. Keli Technology focuses on the conveying of powder and granular ingredients, and can provide you with a full service of design, manufacturing, installation and commissioning.

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