Agricultural stainless steel submersible pump is essential for irrigation and drainage drainage machinery, the correct purchase and installation, to ensure the safe operation of units, improve pumping efficiency, is of great significance.
Purchase
Many types of agricultural stainless steel submersible pumps, submersible pumps here, for example, to introduce their purchase precautions.
1. Select the maximum outside diameter of the pump according to the ID of the well pipe. Purchase should not only consider whether the pump into the well tube, but also consider the pump installed in the underground parts shall not touch the inner wall of the well, to prevent the pump in the operation of vibration, damage to the well. General requirements The maximum outside diameter of the pump than the well diameter 25-30 mm. If the well is slightly curved, the difference in diameter between the two can be slightly larger.
2. Select the maximum flow rate of the pump according to the water volume of the well. The flow rate of the pump is based on the data given on the nameplate or in the product specification. The general requirements of the maximum water level of the wells should not exceed 50% of the depth of well water to prevent the collapse of the water level caused by excessive wells or siltation pump.
3. According to the actual needs of the lift pump head selection. The actual need to lift the water level to the water level of the vertical distance to the pond, the pump head should be equal to the actual lift and lift pipe in the sum of the loss of head. Head loss in the lift pipe, usually according to the actual lift of 6% -9% (usually 1-2 meters). National standards, submersible pump safety lift should be provided in the range of 83% -140%.
4. Select the product that is qualified. When you determine the type of pump, the official purchase should pay attention to the following points, to prevent the purchase of inferior products.
installation
1. Pump location should be as close to water as possible to reduce the suction; the same time, should choose the soil hard, solid foundation to prevent collapse, the installation location should facilitate disassembly and maintenance.
2. If the pump is directly connected to the power unit, the two should have a common base, the water pump shaft line to maintain the level, and the power machine axis in the same line.
3.Belt drive, should make the pump axis parallel; flat belt drive when the center distance of two axes shall not be less than 2 meters, and the flat belt in the next tight side, the loose edge in order to increase the flat band angle, reduce skidding , Improve transmission efficiency; transmission belt should be set up protective net or protective cover.
4. The inlet pipe along the flow direction should be gradually increased, any point shall not be higher than the pump inlet; into the water pipe shall not have arch parts, so as not to keep the air in the tube, reducing work efficiency.
5. The inlet pipe diameter can be greater than the pump inlet diameter, but the pump inlet, the use of cone eccentric tube connection, and eccentric part down, so as to avoid air retention, the formation of air resistance.
6. If the inlet pipe and water pump if the elbow, the elbow may not be close to the pump inlet, so as to avoid uneven flow of water pumping efficiency; elbow radius should be slightly larger, and the elbow and pump inlet should be between the folder Straight tube or cone, straight tube length should be 2-3 times the diameter.
7. The inlet pipe should be installed as little as possible elbow, joints, in order to reduce the hydraulic loss; inlet pipe joints must be tight, not leak.
8. Centrifugal pump into the bottom should be submerged underwater 0.5 meters; axial pump inlet should be submerged underwater 1.0-1.5 m, so as not to form a vortex inlet water surface of the suction air, affecting the continuity of the work of the pump.
9. Axial flow pump inlet and the bottom of the distance into the water, preferably 0.5 times the diameter of the inlet, when the pool side of the loose sediment, then the distance for the inlet diameter of 1.0-1.5 times.
10. If the inlet pipes of several pumps are pumped in the same place, the center distance of the water inlet should be twice the inlet diameter, and the distance between the center line of the pipe and the wall of the pool should be twice the diameter of the inlet. Keep spacious, so as to avoid the phenomenon of water wins.
11. The entire outlet pipe should be reliable support to withstand the weight, so as to avoid unit displacement or damage due to vibration of the pipeline connection.
Purchase
Many types of agricultural stainless steel submersible pumps, submersible pumps here, for example, to introduce their purchase precautions.
1. Select the maximum outside diameter of the pump according to the ID of the well pipe. Purchase should not only consider whether the pump into the well tube, but also consider the pump installed in the underground parts shall not touch the inner wall of the well, to prevent the pump in the operation of vibration, damage to the well. General requirements The maximum outside diameter of the pump than the well diameter 25-30 mm. If the well is slightly curved, the difference in diameter between the two can be slightly larger.
2. Select the maximum flow rate of the pump according to the water volume of the well. The flow rate of the pump is based on the data given on the nameplate or in the product specification. The general requirements of the maximum water level of the wells should not exceed 50% of the depth of well water to prevent the collapse of the water level caused by excessive wells or siltation pump.
3. According to the actual needs of the lift pump head selection. The actual need to lift the water level to the water level of the vertical distance to the pond, the pump head should be equal to the actual lift and lift pipe in the sum of the loss of head. Head loss in the lift pipe, usually according to the actual lift of 6% -9% (usually 1-2 meters). National standards, submersible pump safety lift should be provided in the range of 83% -140%.
4. Select the product that is qualified. When you determine the type of pump, the official purchase should pay attention to the following points, to prevent the purchase of inferior products.
installation
1. Pump location should be as close to water as possible to reduce the suction; the same time, should choose the soil hard, solid foundation to prevent collapse, the installation location should facilitate disassembly and maintenance.
2. If the pump is directly connected to the power unit, the two should have a common base, the water pump shaft line to maintain the level, and the power machine axis in the same line.
3.Belt drive, should make the pump axis parallel; flat belt drive when the center distance of two axes shall not be less than 2 meters, and the flat belt in the next tight side, the loose edge in order to increase the flat band angle, reduce skidding , Improve transmission efficiency; transmission belt should be set up protective net or protective cover.
4. The inlet pipe along the flow direction should be gradually increased, any point shall not be higher than the pump inlet; into the water pipe shall not have arch parts, so as not to keep the air in the tube, reducing work efficiency.
5. The inlet pipe diameter can be greater than the pump inlet diameter, but the pump inlet, the use of cone eccentric tube connection, and eccentric part down, so as to avoid air retention, the formation of air resistance.
6. If the inlet pipe and water pump if the elbow, the elbow may not be close to the pump inlet, so as to avoid uneven flow of water pumping efficiency; elbow radius should be slightly larger, and the elbow and pump inlet should be between the folder Straight tube or cone, straight tube length should be 2-3 times the diameter.
7. The inlet pipe should be installed as little as possible elbow, joints, in order to reduce the hydraulic loss; inlet pipe joints must be tight, not leak.
8. Centrifugal pump into the bottom should be submerged underwater 0.5 meters; axial pump inlet should be submerged underwater 1.0-1.5 m, so as not to form a vortex inlet water surface of the suction air, affecting the continuity of the work of the pump.
9. Axial flow pump inlet and the bottom of the distance into the water, preferably 0.5 times the diameter of the inlet, when the pool side of the loose sediment, then the distance for the inlet diameter of 1.0-1.5 times.
10. If the inlet pipes of several pumps are pumped in the same place, the center distance of the water inlet should be twice the inlet diameter, and the distance between the center line of the pipe and the wall of the pool should be twice the diameter of the inlet. Keep spacious, so as to avoid the phenomenon of water wins.
11. The entire outlet pipe should be reliable support to withstand the weight, so as to avoid unit displacement or damage due to vibration of the pipeline connection.
Manufacturers recommend: Shenlong stainless steel submersible pump
Keywords:Agricultural stainless steel submersible pumps, purchase attention.
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