Cement bulk carrier, the full name of the powder material transport vehicle, it is suitable for bulk transportation of fly ash, cement, lime powder, ore powder, granular alkali and other granular materials with a diameter of not more than 0.1mm. The powder material transport vehicle is a special-purpose vehicle widely used in industry, agriculture, commerce, power plants, construction, etc.
The powder is shipped from the factory, transported and stored without being packed in paper bags and shipped directly through the Cement Bulk Carrier. Therefore, it has the following advantages:
1. Reduce labor consumption, increase labor productivity, and improve working conditions;
2. Save the cost of packaging and crushing raw materials and paper bags, and reduce transportation costs;
3. The cement loss is reduced, the loss rate is generally below 0.5%, and the bagging loss rate is greater than this ratio;
4. To ensure the quality of cement, bulk cement is not easy to get wet during transportation, and it rarely deteriorates after one year of storage;
5. Reduce environmental pollution;
1.Cement Bulk Carrier consists of two parts: the car chassis and the powder bulk transportation special device;
2. The top loading part mainly includes the transmission system, the tank body, the pipeline system, the auxiliary device and the auxiliary beam;
3. Cement Bulk Carrier working principle: The power of the automobile engine is transmitted to the air compressor through the mobile device such as the power take-off device and the transmission shaft, and the compressed air generated by the air compressor enters the tank body, and the powder material is liquefied through the liquefaction device. The pressure difference generated inside and outside the tank, the powder material is transported along the discharge line to the designated position along with the air.
When the gas enters the powder layer from the lower part of the vessel, if the gas flow rate exceeds a certain value (cement is 0.015 m/s), the frictional force of the gas and the powder particles is equal to the weight of the powder and granules, and the powder and granules no longer flow. The bed is supported, at which point they can move freely, from high to low, keeping the upper plane of the powder layer horizontal, similar to liquid properties. If the side wall of the container is open at this time, the powder can also be ejected from the hole. This is called fluidization. The cement truck utilizes the fluidization characteristics of the powder to achieve unloading. The function of the fluidized cloth is that the compressed air forms a fine, uniform airflow into the powder layer to fluidize the powder.
The main body of the tank, the cylinder, the manhole cover and the liquefaction device;
a. The head adopts the standard elliptical head, the main specifications are EH2300, EH2400, EH2500, EH2600, EH2700mm;
b. The head and cylinder materials are Q345, QST420, 610, etc.;
c. Manhole cover adopts two structures, one is the inner button type inlet cover (the height of the whole vehicle is 100mm lower than the external pressure spring lifting structure after loading, but the operation maneuverability is poor, the operation is troublesome), one external three-jaw External pressure manhole cover (high height, good maneuverability, easy operation), standard configuration for inner button manhole cover;
d. The internal fluidization device is the core component of the Cement Bulk Carrier. It mainly consists of a canvas liquefaction device (consisting of a perforated plate, a side slide, and a support structure below, the angle between the perforated plate and the side slide at an angle to the horizontal plane) In order to improve the effect of liquefaction, a ridge plate is also smashed on the perforated plate for diverting the cement and increasing the gas flow rate. The liquefied cloth is pressed against the perforated plate by bolts, and a closed air chamber is formed under the fluidized cloth. The air chambers are not connected, the front and rear compartments can be unloaded independently, and the gas permeable liquefaction unit.
Transmission system: mainly consists of power take-off, drive shaft, air compressor (rated working pressure is 0.2Mpa, speed is 800-1100r/min), etc.; a magnetoelectric tachometer is installed outside the tank to monitor the air pressure. Machine speed, by adjusting the throttle controller, the engine throttle can be adjusted to change the air compressor speed.
Piping system: After the gas is output from the air compressor, it enters each compartment through the check valve and ball valve. A safety valve is installed before and after the check valve to prevent the air pressure from being too high to damage the air compressor when there is an accident. The valve setting meter has a bleed pressure of 0.2Mpa; the secondary assisting blowing line is connected to the discharge line and assists in blowing during discharge. It is prevented by the ball valve, rubber hose and blow-behind valve. In the pipeline; the external air supply is provided for the user not using the air compressor of the vehicle, but using the outside compressed air. A pressure relief valve is installed on the top of the tank to discharge the residual pressure in the tank, and to deflate the air before the user opens the material cover and stops the discharge.
The discharge pipeline mainly has a suction port, a butterfly valve (sealed by a rubber sealing ring, which can be replaced if damaged), a discharge steel pipe, a discharge pipe joint, a discharge hose (a wear-resistant steel wire discharge hose, a diameter of 102 mm), etc. Composition; a shock-resistant pressure gauge is installed on the tank to monitor the change of pressure in the tank to guide the discharge; 8. The residual value is according to the requirements of QC/T560-1999 "Technical Conditions for Bulk Cement Trucks": 15m in vertical height, horizontal When the distance is 5m and the working pressure is 0.2Mpa, the average discharge speed of the cement truck is not less than 1.2t/min, and the residual rate is not more than 3%.
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