cancel the valve at the end to improve efficiency
September 14, 2021
1. Cancel the bottom valve, the valve resistance coefficient at the end of the larger, generally reduce the head of about 1.5 meters. The efficiency of the pump will be significantly improved after the bottom valve is removed. If the mouth in the outlet pipe fitted a pat door, and then sealed the stuffing box with butter, so stop the pump after starting again do not have to fill. 2. Cancel gate and check valve, gate valve and check valve resistance coefficient is relatively large, the role of gate valve is to regulate the amount of water, but not necessarily the amount of agricultural pump water regulation, it can be omitted. The role of check valve is to prevent the water back, with the door, it does not need a check valve. 3. Slant the pump (or turn the pump volute) so that the water can flow straight in and out of the pool to reduce the elbow. 4. To reduce the loss of pipeline filter O.8 mm steel wire instead of the filter, so that cross-section of the porosity increased to reduce the power consumption. 5. Inlet pipe should have sufficient depth of submergence When submerged depth is not enough, the water will produce vortex, the air into the pump, reducing pump efficiency. Submerged depth of influent pipe should be greater than 0.5 meters. 6. Avoid "anti-aircraft" type water law As the outlet pipe is higher than the surface of the water pool, head loss, nozzle water will produce reflected waves in the sidewalls, increasing the outlet pressure, affecting water. 7. The selection of economic pipe diameter resistance loss and pipe diameter inversely proportional to the fifth power, the smaller the pipe diameter, the greater the resistance. The outlet pipe of the economic diameter of the pump flow after the O.65-O.8, the economic pipe diameter of the water flow after the 0.8-0.92 times. 8. Clear runner blockages in a timely manner if there is impurities block the inlet and outlet pipes, impeller or diversion channel, will reduce the amount of water. 9. Improve the belt transmission efficiency Note that the tight edge of the belt and the loose side of the drive package angle, do not use the wide belt into a narrow belt, and pay attention to the tightness of the belt. 10. Change the ring, adjust the axial gap impeller mouth ring gap, the volume efficiency decreases. Therefore, to regularly check the mouth ring gap. The value of axial clearance, should be adjusted according to the factory instructions.
