First, the causes and treatment methods of the self-priming fire pump of Shanghai Liangong Pumps are as follows:
1. Insufficient priming pump (or the gas in the pump is not exhausted). Treatment method: Refill the pump.
2, the pump steering is wrong. Processing method: check the direction of rotation.
3, pump speed is too low. Processing methods: check the speed, increase speed.
4, filter plug, bottom valve is not working. Processing methods: check the filter to eliminate debris.
5, suction height is too high, or vacuum suction tank. Treatment: reduce the suction height; check the suction tank pressure.
Second, the causes and treatment methods of the interruption of the self-priming fire pump discharge of Shanghai Liangong Pump are as follows:
1. Leakage of the suction line. Processing method: Check the connection of the suction pipe and the sealing of the stuffing box.
2, the suction side of the pump when the gas is not drained. Treatment: Re-injection pump required.
3, the suction side suddenly blocked by foreign matter. Processing methods: stop the pump to deal with foreign matter.
4, inhaled a lot of gas. Treatment methods: Check whether the inlet vortex, submerged depth is too shallow.
Third, the reasons for the large power consumption in the operation and processing methods are as follows:
1. The impeller and the wear ring, the impeller and the shell have friction. Treatment methods: Check and repair.
2. Four items in the same five. Processing method: Reduce the flow.
3, increase the liquid density. Treatment method: check the liquid density.
4, the packing pressure is too tight or dry friction. Treatment method: relax the packing, check the water seal tube.
5, bearing damage. Treatment: Check the repair or replacement of bearings.
6, high speed. Processing methods: check the driver and power supply.
7, the pump shaft bending. Processing methods: correct the pump shaft.
8, the axial force balance device failure. Treatment: Check the balance hole, return pipe is blocked.
9. Coupling misalignment or axial clearance is too small. Processing method: check alignment and adjust axial clearance.
Fourth, the pump can not start or start the cause of the load and processing methods are as follows:
1. The prime mover or the power supply is abnormal. Processing method: Check the power supply and prime mover.
2. The pump is stuck. Processing method: Check the coupling by hand and dismantle the check if necessary to eliminate part of the malfunction.
3, packing pressure is too tight. Treatment methods: relax the packing.
4. The discharge valve is not closed. Processing method: Close the discharge valve and restart.
5, the balance tube is not smooth. Treatment method: to clear the balance tube.
1. Insufficient priming pump (or the gas in the pump is not exhausted). Treatment method: Refill the pump.
2, the pump steering is wrong. Processing method: check the direction of rotation.
3, pump speed is too low. Processing methods: check the speed, increase speed.
4, filter plug, bottom valve is not working. Processing methods: check the filter to eliminate debris.
5, suction height is too high, or vacuum suction tank. Treatment: reduce the suction height; check the suction tank pressure.
Second, the causes and treatment methods of the interruption of the self-priming fire pump discharge of Shanghai Liangong Pump are as follows:
1. Leakage of the suction line. Processing method: Check the connection of the suction pipe and the sealing of the stuffing box.
2, the suction side of the pump when the gas is not drained. Treatment: Re-injection pump required.
3, the suction side suddenly blocked by foreign matter. Processing methods: stop the pump to deal with foreign matter.
4, inhaled a lot of gas. Treatment methods: Check whether the inlet vortex, submerged depth is too shallow.
Third, the reasons for the large power consumption in the operation and processing methods are as follows:
1. The impeller and the wear ring, the impeller and the shell have friction. Treatment methods: Check and repair.
2. Four items in the same five. Processing method: Reduce the flow.
3, increase the liquid density. Treatment method: check the liquid density.
4, the packing pressure is too tight or dry friction. Treatment method: relax the packing, check the water seal tube.
5, bearing damage. Treatment: Check the repair or replacement of bearings.
6, high speed. Processing methods: check the driver and power supply.
7, the pump shaft bending. Processing methods: correct the pump shaft.
8, the axial force balance device failure. Treatment: Check the balance hole, return pipe is blocked.
9. Coupling misalignment or axial clearance is too small. Processing method: check alignment and adjust axial clearance.
Fourth, the pump can not start or start the cause of the load and processing methods are as follows:
1. The prime mover or the power supply is abnormal. Processing method: Check the power supply and prime mover.
2. The pump is stuck. Processing method: Check the coupling by hand and dismantle the check if necessary to eliminate part of the malfunction.
3, packing pressure is too tight. Treatment methods: relax the packing.
4. The discharge valve is not closed. Processing method: Close the discharge valve and restart.
5, the balance tube is not smooth. Treatment method: to clear the balance tube.
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