Coal Slurry Pump gasification unit using high-pressure coal slurry pumps are diaphragm reciprocating pump, is now more common on the market to see a pump. Coal
Slurry Pump is widely used in a wide range of industries, mainly used in the transport of some with mortar, mud, coal water slurry ... and other liquids. The following is the author to share with you the working principle of coal slurry pump. The working principle of coal slurry pump Coal slurry pump works: 1, most of the high-pressure coal slurry pumps used in gasification plants are diaphragm reciprocating pumps, there are two main types of cylinder structure: three cylinders Diaphragm reciprocating pump and four-cylinder diaphragm reciprocating pump, the motor rotation through the transmission gear drive mechanism for each cylinder piston, so that the piston reciprocating motion. A single cylinder as an example to introduce the action of the process (shown below): reciprocating piston using the drive fluid incompressibility, through the drive fluid pressure transfer to the diaphragm, the diaphragm expansion or contraction, and then use the one-way valve action , To achieve the inhalation of coal slurry and shot. From the perspective of the action of a single cylinder, the suction and discharge of coal slurry in each cylinder are intermittent, so the delivery of coal slurry can be said to be pulsed, the output pressure is unstable, in order to solve the problem of pressure instability, In a cycle evenly distributed piston advance, so that the piston at the same time to avoid forward or retraction, which can effectively stabilize the pressure of the coal slurry pump outlet, and then set in the coal slurry pump buffer tank, to further stabilize the outlet pressure. 2, drive fluid supply system. In each cylinder, set the cylinder diaphragm rod position detection probe, the use of the diaphragm connected to the rod movement of the magnet to trigger the drive fluid is normal. When the probe detects the signal, send a message to the PLC system, the PLC control solenoid valve switch, and then control the pneumatic valve for oiling or oil discharge, so that the cylinder drive fluid in a normal state. Drive fluid supply system can detect whether the drive fluid is normal, and then automatically realize the injection of oil discharge action to protect the normal operation of the cylinder, while protecting the diaphragm, to prevent membrane damage. 3, the role of the probe: real-time monitoring of the cylinder drive fluid is normal (lack of oil or over oil), trigger the probe through the magnetic ring. (1) When the driving fluid in the cylinder is normal, the reciprocating range of the magnetic ring on the rod moves. (2) When the driving fluid in the cylinder is lack of oil, the reciprocating motion of the magnetic ring on the rod moves. During one cycle of the reciprocating motion of the rod, the magnetic ring moves to the bottom of the oiling probe once to trigger the oiling probe to close and control to the cylinder Within the oil, until the normal drive fluid stop oiling. (3) When the driving fluid in the cylinder passes the oil, the reciprocating motion of the magnetic ring on the rod moves, and during one cycle of the reciprocating motion of the rod, the magnetic ring moves to the bottom of the oil discharge probe once to trigger the oil discharge probe to close control Discharge the oil from the tank to the tank until the drive fluid is normal and stop discharging oil. Further reading: Motor IFAT China's top ten brands Guangzhou Exhibition building
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August 22, 2023
