What Are The Requirements For The Shutdown Of Spiral Centrifugal Pumps?

What are the requirements for spiral centrifugal pump shutdown?A more critical part of the spiral centrifugal pump is its best spiral centrifugal impeller, which has both spiral sections and centrifugal sections, combining the advantages of the rate of traditional centrifugal pumps and the non-blocking properties of the spiral pump.The initial purpose was to help the fishing plant transport live fish from the fishing boat. Relying on the non-blocking and gentle transport characteristics of the spiral centrifugal impeller, the pump can transport live fish from the fish net to the ship intact and then from the ship to the processing plant.With the increasing development and improvement of the products, its application areas have gradually expanded.Compared with ordinary impurity pumps and cyclone pumps, spiral centrifugal pumps have good non-blocking performance. The large channels formed by the blades, coupled with the inlet guide and spiral propulsion, can transport liquids containing large particles and fiber substances, especially long fiber objects, which can pass smoothly.The conveyed solid concentration is higher than other types of non-blocking pumps, and the diameter can be much higher than that of traditional centrifugal impellers with similar outer diameters.The advantage of the spiral centrifugal pump without blockage is that the impeller has a twisted spiral blade, which extends axially from the suction port, and the radius of the blade gradually increases, forming a very open spiral flow channel.The shell consists of three parts: suction port, inner lining and vortex shell. The impeller of the suction port produces a spiral propulsion effect. The impeller of the vortex shell produces a centrifugal effect. The acute angle part of the inlet of the blade guides the debris to the axial attachment, and then uses the spiral action to push it along the axis. After the solid particles enter the impeller, they are subjected to a balanced spiral force to rotate along the parabola formed by the spiral blade. Although it also rotates 90 degrees, the trajectory of the particles through the spiral centrifugal pump is gradually changed, so the liquid flow passes through the pump under low stress and low mixing conditions.Moreover, this * design also allows liquids with large solid content to pass without blockage.Spiral centrifugal pumps are widely used.If users maintain it well during use, the service life of the pump will also be extended. If not maintained, it will not only affect the service life of the pump, but also not achieve higher efficiency. Therefore, we must pay attention to some basic requirements during use.Below, the editor will introduce to you how to shut down the spiral centrifugal pump without harming itself?Requirements after the spiral centrifugal pump stops operation: 1. After the operation is stopped, the population valve of the pump should be closed, and the valves of the auxiliary system should be closed in turn after the pump cools down.2. Parking should be carried out according to the provisions of the equipment technical documents. After parking, you should turn half a turn of 20 to 30 minutes until the pump body temperature drops to 50℃.3. When parking, when there are no special requirements, the pump should be filled with liquid frequently; the suction valve and discharge valve should remain normally open; a low-temperature pump with dual-end mechanical sealing is adopted, and the liquid level controller and the sealing liquid in the pump sealing chamber should maintain the grouting pressure of the pump.4. For pumps that convey media that are easy to crystallize, solidify, and precipitate, they should prevent blockage after stopping the pump, and flush the pump and pipelines with clean water or other media in time.5. Exhaust the liquid accumulated in the pump to prevent rusting and freezing of the spiral centrifugal pump.