Common sense about how to discharge ash from cement tank trucks
1. What is the working principle of the general bulk cement tank truck ash blasting speed?
The speed is not more than 0.1mm in diameter to dry the material.
The working principle of bulk cement tank truck dusting: The powder tank assembly mainly consists of a cylinder, a feed port at the upper end of the tank, a fluidized bed, a discharge pipe assembly, an air inlet pipe and Composed of other accessories. The front and rear air chambers of the bulk cement truck are each equipped with an air inlet pipe, and the functions of simultaneous opening and independent control can be realized through ball valves.
The working principle of the system is as follows: the working power is drawn from the automobile gearbox, and the air compressor is driven through the transmission device. The generated compressed air enters the air chamber through the control pipeline, causing the powder materials in the tank to produce a fluid state. phenomenon. When the pressure reaches 0.196Mpa, the discharge butterfly valve is opened to realize discharge.
Extended information:
When the female end and the sub-end of the tank truck are connected, the air compressor begins to blow compressed air into the tank. Regulations require that the pressure gauge starts to display 0.2Kpa. It takes a long time to put out the ash. When putting out the ash normally, the pressure gauge needle always swings around a fixed value. At this time, it works normally. When there is not much cement left in the bulk cement truck tank, the relative space inside the tank has increased.
When the pointer suddenly drops to the lowest point (close to the "0" value of the pressure gauge), the air outlet of the bulk cement flow tank quickly sprays out a large group of air-ash mixed airflow, which indicates that the flow tank is filled with ash. The process ends.
After this process, if the bulk cement tanker driver wants to check the remaining material in the bulk cement tanker tank, the first choice is to open the gas unloading switch to exhaust the remaining gas in the tank to avoid collision when opening the tank lid. Incidents of injuries caused by opening can lids. You can check the air pressure in the tank through the air pressure gauge. 0 means there is no air pressure in the tank.
Sogou Encyclopedia - Cement Tank Truck
2. Operation steps of dusting the ash tank of bulk cement truck
1. Before loading, the tank should be inspected and cleared There should be no dust, slagging, etc. in the body and discharge pipes; all pipes and valves should open and close flexibly, and there should be no blockage, air leakage, etc.; all connecting parts should be firm and reliable before loading.
2. Before opening the charging port, the exhaust valve should be opened to eliminate the residual air pressure in the tank.
3. When loading, the switch of the material level indicator in the tank should be turned on. When the material level indicator sends a full sound signal, the filling should be stopped immediately.
4. After loading is completed, the cement accumulated on the edge of the loading port should be cleaned, the feed port cover should be closed, and the latch should be inserted and locked.
5. Before unloading, the vehicle should be parked on a flat unloading site, the unloading pipe should be installed, the butterfly valve of the unloading pipe and the ball valve of the pressure relief pipe should be closed, the secondary air pipe should be opened and the compression should be turned on. air to ensure that the air compressor starts without load.
6. When pressurizing the tank, make sure that the discharge valve is closed. When the air pressure in the tank reaches the discharge pressure, the secondary air nozzle valve should be opened slightly first and then the discharge valve, and the opening of the secondary air nozzle valve should be adjusted to adjust the optimal ratio of air and cement.
7. During the unloading process, the pressure change of the pressure gauge should be observed. If the pressure suddenly rises and the air hose is blocked and the material is no longer discharged, the air supply should be stopped and the pressure in the pipe should be released, and then the blockage should be cleared. .
8. During unloading operations, a dedicated person should be responsible for the air compressor, and other personnel are not allowed to operate it without authorization. During pressurized unloading, the internal combustion engine speed must not be changed.
9. After unloading, open the vent valve, drain out the remaining air in the tank, and close all valves. There must be no pressure inside the tank while the vehicle is in motion.
10. Do not load and unload cement in the open air on rainy days. Frequent inspection should be made to ensure that the feed port cover is closed tightly and no water or humid air is allowed to enter the tank.
11. When performing maintenance and inspection under the car, the internal combustion engine should be turned off, the hand brake should be tightened and the wheels should be wedged firmly.
12. When a vehicle needs to be tested after being repaired, it should be driven by a qualified person. No people or objects are allowed on the vehicle. When it needs to be tested on the road, it should have a test license issued by the traffic management department.
13. When parking on a slope, the reverse gear should be engaged when parking downhill, and the first gear should be engaged when parking uphill, and the tires should be tightened with triangular wooden wedges.
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3. The working principle of the ash removal speed of general bulk cement tankers
1. Brief description of bulk cement truck:
Bulk cement truck, also known as powder material transport truck, consists of a special car chassis, bulk cement truck tank, gas pipeline system, automatic unloading device and other parts. It is suitable for bulk transportation of dry materials with particle diameters not larger than 0.1mm, such as fly ash, cement, lime powder, ore powder, and granular alkali. Mainly used in cement plants, cement warehouses and large construction sites, it can save a lot of packaging materials and loading and unloading labor.
2. Bulk cement truck chassis:
You can choose Dongfeng chassis, Jiefang chassis, SINOTRUK Steyr chassis, and JAC chassis.
3. Bulk cement truck tank:
The bulk cement truck tank mainly consists of a cylinder, a feed port at the upper end of the tank, a fluidized bed, and a discharge pipe assembly , intake pipe and other accessories.
The top of the tank is equipped with two or three feeding ports
4. Bulk cement truck gas pipeline system:
The front and rear of the bulk cement truck Each air chamber is equipped with an air inlet pipe, and the functions of simultaneous opening and independent control can be realized through ball valves.
The working principle of the system is as follows: the working power is drawn from the automobile gearbox, and the air compressor is driven through the transmission device. The generated compressed air enters the air chamber through the control pipeline, causing the powder materials in the tank to produce a fluid state. phenomenon. When the pressure reaches 0.196Mpa, the discharge butterfly valve is opened to realize discharge.
5. Bulk cement truck user manual:
1. Do not overspeed or overpressure when driving a bulk cement truck. Overspeeding and overpressure will seriously damage the air compressor. The maximum speed of this machine is shown in the main technical parameter table, and the working pressure is 0.2MPa.
2. Do not start or stop the air compressor quickly, but increase or decrease the speed slowly. Otherwise, the punching force will damage the air compressor.
3. Do not change the rotation direction of the air compressor, otherwise, the machine will be seriously damaged if the oil pump does not supply oil.
4. Do not stop the air compressor before decompression, otherwise, powdery materials may flow back into the cylinder, causing serious damage to the air compressor.
5. Check the oil level before starting the machine. The oil level must not be lower than the lower limit of the oil mark; it is necessary to frequently check whether the oil pump is supplying oil. If it is not supplying oil, stop the machine immediately for inspection. Otherwise, lack of oil will seriously damage the air compressor.
6. Replace lubricating oil on schedule. After the new machine has been used for 30 hours, drain the oil from the crankcase, clean the inside of the crankcase and the oil filter, and then change the oil. From now on, change the oil once a year as above.
7. Check and clean the oil filter. Under normal circumstances, the machine should be inspected and cleaned once a quarter. If the machine usage rate is high, it should be inspected and cleaned once a month.
8. The lubricating oil used in this machine is CD40 diesel engine oil. It is forbidden to mix lubricating oils of different brands, otherwise the deterioration of the lubricating oil will affect the lubrication effect.
9. Maintain and clean the air filter element every 30 hours of work. While rotating the filter element, blow compressed air with a pressure less than 0.6MPa from the inside out. After five maintenances, please replace the filter element with a new one. It is strictly forbidden to use oil or water to clean the filter element.