Quick water-free starting device applied to centrifugal pump

Abstract

The invention provides a quick water-free starting device applied to a centrifugal pump. The quick water-free starting device comprises a one-way channel, a self-suction cavity shell, a sliding device, a self-suction cavity, a concave-convex impeller, two side inlet flow channels connected with the self-suction cavity, a spring device of an upper side x-shaped gas-liquid separation device, an upper side x-shaped gas-liquid separation device, an upper and middle side gas-liquid separation device connecting shaft, a middle side gas-liquid separation device, a lower side backflow type gas-liquid separation device, a v-shaped backflow flow channel, an inverted v-shaped inlet flow channel and an inlet which are sequentially arranged from top to bottom. According to the quick water-free starting device, the centrifugal pump can directly enter the normal operation working condition after water-free starting, and 36 times of exhaust can be completed by rotating an impeller in a self-suction cavity by a circle in the earlier stage. In addition, the device is provided with an upper gas-liquid separation device, a middle gas-liquid separation device and a lower gas-liquid separation device, gas-liquid separation is fully achieved, gas can be exhausted more quickly, a cavity is filled with water, the working efficiency can be remarkably improved, and the operation process is greatly simplified.

Description

technical field [0001] The invention belongs to the field of quick anhydrous starting devices, in particular to a quick anhydrous starting device applied to centrifugal pumps. Background technique [0002] Centrifugal pumps are widely used in agricultural irrigation, industrial fluid transportation and other fields. But before the centrifugal pump is started, because the chamber is filled with air, the impeller can only drive the air in the pump to rotate, and the air has a low gravity, so the centrifugal force generated is too low. If the air is not discharged, the pump cannot carry water. Therefore, the pumping operation needs to be performed before starting, and this operation is cumbersome and complicated. If the external auxiliary equipment is used for vacuuming, the energy consumption is high, the noise is large, and the start-up time is greatly prolonged, especially for emergency water delivery places. Contents of the invention [0003] Aiming at the deficiencies i...

AI Technical Summary

Problems solved by technology

But before the centrifugal pump is started, because the cavity is filled with air, the impeller can only drive the air in the pump to rotate, and the air has a low gravity, so the centrifugal force generated is too low. If the air is not discharged, the pump cannot carry water.

Therefore, the pumping operation needs to be performed before starting, and this operation is cumbersome and complicated. If the external auxiliary equipment is used for vacuuming, the energy consumption is high, the noise is large, and the start-up time is greatly prolonged, especially for emergency water delivery places.

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