The system of the pulverizer consists of feeding, auxiliary suction, and discharge. Only when these parts are matched to each other can the pulverizer perform well.
The pulverizer is generally fed by an impeller feeder or a belt feeder. The impeller feeder and the belt feeder are provided with auxiliary suction ports, and the suction port is appropriately opened by the adjusting plate, so that when the pulverizer is working, a negative pressure is formed in the pulverizing chamber, which is favorable for discharging the pulverized powder in time. Screen. If the opening degree of the adjusting plate is too small, the air intake amount is not large, the negative pressure in the pulverizing chamber is small, the powder material is discharged poorly, the powder material is excessively pulverized, and the heat in the pulverizing chamber cannot be discharged in time, and the pulverizer is inevitably "fever". When the pulverizer "fever", the opening of the adjustment plate must be checked.
The auxiliary suction system of the pulverizer is composed of a material sedimentation chamber after pulverization, a pulse dust collector and a fan.
The space for pulverizing the material sedimentation chamber should be as large as possible, which is a guarantee for the smooth passage of the powder road, which is conducive to the smooth and timely discharge of the pulverized material. The space for pulverizing the material sedimentation chamber is small, which is also the cause of poor powder discharge. Therefore, appropriate space should be reserved during design to meet the process requirements.
According to different types of pulverizers, select the corresponding pulse dust collector. The selection of the dust collector should be determined according to the filtering wind speed, the filtering area and the checking air volume. To ensure the dust removal efficiency, the air volume of the fan should be selected as close to the intermediate value as possible, and the wind pressure should not exceed 20% of the design value. Installed on the air outlet of the dust collector. A large space sedimentation chamber must be provided between the dust collector and the material seal auger to make the gas entering the dust collector inlet have a low dust concentration.
The filter bag filter used in the dust collector is mostly polyester needled filter felt. The temperature is ≤120°C, the acid resistance is good, and the alkali resistance is poor. For dust with a particle size of ≤1μm or high moisture, the peritoneal polyester needle can be used. Puncture filter felt, but dust with a large particle size and a large difference in particle size distribution is not suitable.
The smooth surface of the filter material is suitable as the dust-receiving surface: a) dust for lighter or containing frivolous debris; b) dust with higher humidity; c) greater viscosity and higher adsorption of dust; d) treatment of dust concentration Higher gas.
The rough surface of the filter material is suitable as the dust-receiving surface: a) the particle size of the dust is small; b) the particle size distribution of the dust is relatively uniform; c) the humidity of the dust is not large; d) the viscosity of the dust is small and the adsorption is small.
Due to the high-speed rotation of the pulverizer hammer and the friction material, the moisture and fine dust in the material will be adhered by the pulse dust collector bag, and the wind resistance will increase. As time goes by, the air volume and wind pressure of the dust collector will be lost. The pulverizer will "fever" and the output will be reduced. The bag of the dust collector must be replaced or cleaned in time.
The discharge system of the pulverizer is composed of a material-sealed auger, a bucket elevator and the like. The function is to transport the powder passing through the screen to the next process to ensure continuous and smooth discharge of the pulverizer. At the discharge end of the auger, there is a material sealing baffle, which is used to allow the material to be discharged smoothly, and the wind that blocks the discharge end of the auger does not enter the dust collector. Therefore, it is necessary to ensure that the material sealing baffle swings freely. When there is material, the material is lifted up by the baffle. When there is no material, the baffle will hang down freely, and the wind that blocks the discharge port is not sucked.
When the pulverizer is working, allow sufficient cold air to enter from the suction port of the feeder, and take the powder through the sifting chamber through the sieve to take the only correct passage of the wind path. If the installation accuracy is not high, the door, cover, air duct and joint are not well sealed, and the wind path will be short-circuited. The air volume passing through the crushing chamber is insufficient, causing the crusher to “feverâ€.
Improper use of the pulse controller can reduce the use of the pulse dust collector and indirectly cause insufficient air volume through the crushing chamber. The correct method of use is the loop setting and the number of blowing pipelines; the pulse width adjustment is in the middle; the interval adjustment is in the middle; the pulse dust collector is not effective, the pulse controller should be checked to adjust the pulse width and the adjustment interval.
If there is too much oil in the oil separator before the air bag, the separation effect will decrease, the oil will stick to the filter felt after air bag blowing; or the compressed air pressure is too low (<0.7MPa), it will also reduce the pulse dust collector. Effect.
Improper use of the pulverizer, long-term work under overload conditions, will also cause the pulverizer to have a fever, or even burn the motor. The correct condition is that the motor operates at 90% of the rated load.
In summary, the "fever" of the pulverizer is caused by insufficient system volume or improper use, resulting in insufficient air volume through the pulverization chamber; excessive pulverization of the material due to poor powder discharge, which accelerates the decline in production; Smooth and fast gathering, the pulverizer rotor works in a high temperature and high speed environment, which aggravates the wear of the hammer and pin.
IV Infusion:
Intravenous simply means "within vein" (or "inside the vein"). Therapies administered intravenously are often included in the designation of specialty drugs. Intravenous infusions are commonly referred to as drips because many systems of administration employ a drip chamber, which prevents air from entering the blood stream (air embolism), and allows an estimation of flow rate.
Intravenous therapy may be used to correct electrolyte imbalances, to deliver medications, for blood transfusion or as fluid replacement to correct, for example, dehydration. Intravenous therapy can also be used for chemotherapy.
Compared with other routes of administration, the intravenous route is the fastest way to deliver fluids and medications throughout the body. The bioavailability of the medication is 100% in IV therapy.
Intravenous infusions are fluid solutions administered through a vein. There are numerous different types of solutions available, but they can be broken down into simple categories depending on the function they serve. Some replace lost fluids, and others provide nutrients, replace lost blood, and deliver medications.
One of the most common uses for intravenous infusions is to replenish fluids lost through dehydration. These infusions often contain normal saline solution, a combination of sterile water and sodium chloride. This solution is known as an isotonic crystalloid, or a solution that contains the same amount of electrolytes as plasma in the body. It is used in cases of moderate to severe dehydration, such as that caused by vomiting or diarrhea, when replacing the fluids quickly is vital.
When a patient`s gastrointestinal tract is compromised and nutrients cannot be absorbed - or eating can worsen the condition - intravenous infusions called total parenteral nutrition may be given. These solutions contain a mix of sterile water, electrolytes, sugar, proteins, fats, and other nutrients, depending on the needs of the patient. Diseases and disorders that commonly require total parenteral nutrition include late stages of Crohn`s disease, obstructive bowel disorder, and ulcerative colitis.
Intravenous infusions are also used to deliver medication directly to the blood stream. Certain medications, such as intravenous immunoglobulin, a type of antibody, can only be given through the vein. Other medications, such as certain narcotic pain relievers, are given intravenously because the method allows them to they work faster than when taken orally. Chemotherapy for treatment of cancer is also typically given intravenously.
When performed by a medical professional, intravenous infusions are typically safe. The most common reaction is mild pain and redness at the site of the injection, although different medications may cause different side effects. Any time the skin is punctured, there is a risk of infection. Having a medical professional, typically a nurse, monitor the intravenous infusion and change the injection site when irritation is evident can help prevent complications.
IV Infusion, Glucose IV Infusion,Intravenous Infusion
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