Changzhou kai industrial drying equipment co., LTD. Remind you

A, before using the centrifugal spray dryer should be checked as follows:

1, check each device of the bearing and sealing parts of dryer connection whether is loose;

2, check the mechanical parts of the lubricating oil and the water, wind, slurry pipe valve port, whether in the required position;

3, check the pipe joint is installed seal material, and then connect it, life is not without heating the air into the drying chamber;

4, whether the inspection door and observation hole is closed, and whether the leak;

5, check the running direction of rotation of the centrifugal fan is correct;

6, check whether the regulation of the centrifugal fan outlet butterfly valve is open, don't put the butterfly valve closing, otherwise will damage the electric heater HeJinFeng pipes, this must cause enough attention;

7, check the feed pump of the connecting pipe is connected and the motor and pump in the direction of rotation is correct;

8, check whether put spray head on top of drying chamber cover, in order to avoid air leakage;

9, atomizer lubricating oil cooling pipe joint is connected and the cooling water is open.

Then, check whether the voltage and the instrument is turning on the power supply is normal, final inspection slurry mixing barrel of the amount of slurry and concentration, etc., if a problem should be ruled out in time.

Second, day-to-day operations

1, open centrifugal fan first, and then open the electric heating, and check for leakage, such as normal preheating tube body can be made, because of the hot air preheating decides the evaporation capacity of drying equipment, in does not affect the drying of material under the premise of quality, should as far as possible improve the inlet air temperature;

2, preheating, drying room and cyclone separator at the bottom of the feed opening of the valve must be closed, so as to avoid the cold wind into the drying chamber, reduce the heating efficiency;

3, when the inlet temperature of drying chamber reaches 180 ℃ ~ 220 ℃, open centrifugal nozzle, sprinkler when achieving the maximum speed, open feeding pump, to join the material liquid, feed rate should be from small to large, otherwise will produce wall sticking phenomenon, until to adjust to the appropriate volume. Material liquid concentration should be prepared according to the nature of the material drying temperature, dry to ensure that the product has good liquidity;

4, drying temperature and humidity of products, depending on the exhaust temperature, in the process of operation, guarantee the exhaust temperature of a constant is extremely important, it depends on the size of the feed rate, feed rate of stable regulation, outlet temperature is not change. If the solid content of slurry outlet temperature and flow rate changes will change;

5, the product temperature is too low, can reduce the feed rate, in order to improve the outlet temperature. Product temperature is too high, vice versa. For the product with low temperature heat can increase the rate of raw materials, to reduce exhaust temperature, but the products of humidity will increase;

6, after drying of finished product is collected, and the lower part of cyclone separator at the bottom of the tower body of pollination, should before pollination device without full of exchange, the exchange pollination, must first to the butterfly valve closing can;

7, if the dry product is hygroscopic, cyclone separator and pipeline, pollination and application of the insulation bandaging parts, so that you can avoid drying the moisture absorption of moisture absorption.

In addition, for heat-sensitive materials, low softening point, exhaust temperature is too high, the softening material, need to increase the cooling air flow.

Third, end and to clean

Centrifugal spray drying machine to normal after the operation, should also be regularly receiving, regularly check the system operation, record the process parameters. Should first shut down at the end of heating device, and to replace the material liquid with water to flush pipe residual material liquid, and then close the feeding pump. When the inlet temperature decreases to below 100 ℃ can stop the operation of the blower and exhauster. Then out drying tower and the filter within the remaining material, close the dust collector and air hammer, finally shut off the main power supply, complete the operation. In case of emergency, must immediately shut down equipment, should first close blower and pump. If sudden power outages, should make natural cooling tower body, and then open the drain valve and exhaust all slurry pipe size, and cleaning equipment.

In addition, after using spray tray to be removed, should be immersed in the water, the residual material clean with water. In wash not to drop, the application of brush to scrub. Because spray tray residue can bring spray is not balance, seriously affect the service life of the nozzle and even damage other parts. Shower after work and in the process of transport don't lie. Was not correct, can make the main shaft bending, affect the use, therefore placed should have fixed frame.

cleaning

In order to ensure the drying tower body parts and all contact with the finished product and pipe cleaning, get the first-class products, there are rules of cleaning equipment is very necessary. When products replace, or equipment, have been shut for more than 24 h and unwashed, should make a thorough cleaning.

Cleaning method, can choose according to actual dry clean, wet wash or chemical wash.

Dry cleaning: use brushes, vacuum cleaners cleaning (applicable to small drying machine).

Wet cleaning: with 60 ~ 80 ℃ hot water wash.

Chemical cleaning: clean with alkali, acid and all kinds of detergent. Among them, the acid pickling, HNO3 match into 1 ~ 2% concentration of the solution, heating temperature does not exceed 65 ℃ for washing, then wash with water; Caustic: NaOH with into 0.5 ~ 1% concentration of the solution, heating temperature does not exceed 65 ℃ for washing, then wash with clear water.

When wet cleaning and chemical cleaning, equipment and components shall be installed, the high temperature disinfection, time 15 ~ 30 min.

When cleaning equipment, washing note can't use chlorine and its compounds.

Air filter cleaning, should according to the ambient conditions, namely the height of the air dust content, usually wash a high content of 3 ~ 6 weeks, low dust content of 6 ~ 8 weeks. By alkaline cleaning method of stainless steel filaments, after washing, still should be equally equipped to within the framework of air filter, and sprayed with lightweight spindle oil or vacuum pump oil.

News source: http://www.kgdry.com/Cn_Products.html