Combined self-priming pump

Abstract

The invention relates to a self-sucking pump, in particular to a combined type self-sucking pump. The combined type self-sucking pump consists of a scuttlebutt, a water pump, a gas-water separator, a return valve, an exhaust valve and a connecting piece, and is characterized in that the scuttlebutt is connected at the front end of a water inlet of the water pump; the gas-water separator is connected at the rear end of a water outlet of the water pump; the return valve is connected on a reflux hole under the gas-water separator and connected with a liquid inlet hole in front of an entrance of the water pump by a connecting pipeline; the exhaust valve is connected on an exhaust hole at the position above the gas-water separator; and the scuttlebutt comprises an upper part water conduit, a lower part water conduit, a water storage tank, etc. The invention aims at providing the combined type self-sucking pump which has shorter self-sucking watering time than a centrifugal self-priming pump, occupies smaller land than a pump scuttlebutt, is stronger in working reliability than a common water pump, the centrifugal self-priming pump and the pump scuttlebutt that adopt bottom valve structure, and has the characteristics of simple product structure, better universality and high unit efficiency.

Description

technical field [0001] The invention relates to a self-priming pump, in particular to a combined self-priming pump. Background technique [0002] When the ordinary water pump sucks water from the lower pool, a bottom valve is installed at the bottom of the suction pipeline, and the entire suction pipeline must be filled with water before starting. However, the bottom valve often breaks down due to inclusion of debris or lax closure itself. These failures are absolutely not allowed under many working conditions such as fire protection and automatic water supply. Even under the permissible working conditions, it is necessary to eliminate these failures It takes a lot of labor. [0003] The biggest feature of the centrifugal self-priming pump is that it can be self-priming, but at the same time it brings disadvantages such as complicated structure, large loss, low efficiency, poor versatility, few product varieties, and long self-priming water filling time. Wherein, the short...

AI Technical Summary

Problems solved by technology

Therefore, the pump water diversion device has the defects of high cost, large volume, and large occupied area.

In addition, when the water diverter for the pump is used for fire protection or frequency conversion water supply for high-rise buildings, due to the frequent start-up of the water pump and the uncertainty of the working time, improper control will also cause the water storage in the diverter to decrease, which will further affect the next time the pump starts. normal water supply

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