Pot-type pressure-superposed water supply device with small-flow auxiliary pump for energy saving

Abstract

The invention discloses a pot-type pressure-superposed water supply device with a small-flow auxiliary pump for energy saving. The pot-type pressure-superposed water supply device is mainly composed of a flow stabilization compensator, a non-negative-pressure controller, an air pressure water tank, the small-flow auxiliary pump, a solenoid valve, a main pump, a flow detecting device and a control cabinet. A second bypass pipe is arranged between a water distribution header pipe and a water outlet header pipe in the manner of bypassing a main pump, and a small-flow pipe is arranged at the position, behind a third check valve, of the second bypass pipe to be connected with the air pressure water tank; and the solenoid valve and a second pressure detecting meter are installed on the small-flow pipe, and a first bypass pipe is further arranged at the position, by passing the solenoid valve and the second pressure detecting meter, of the small-flow pipe. The pot-type pressure-superposed water supply device has the beneficial effects that the small-flow auxiliary pump and the air pressure water tank are arranged, so that the energy saving water supply effect can be better achieved when the flow is small; the pressure-superposed water supply energy-saving potential is further excavated, and the energy-saving flow range is enlarged; in addition, the using rate of the effective volume of the air pressure water tank can be greatly improved through the small-flow auxiliary pump, and the investment and the occupied land are better saved.

Description

technical field [0001] The invention relates to the technical field of secondary water supply, in particular to a tank-type stacked pressure water supply equipment equipped with a small-flow auxiliary pump for energy saving. Background technique [0002] Tank-type stacked water supply equipment has the advantages of energy saving, sanitation, less land occupation, low investment, and convenient management and maintenance. It has been widely used in secondary water supply fields such as residences, offices, shops, hospitals, and schools. When the equipment has a small flow rate, it cannot solve the energy-saving problem that the water pump deviates from the high-efficiency zone. Therefore, many tank-type superimposed water supply equipment on the market are equipped with air pressure water tanks at the water outlets, aiming at maintaining pressure at low flow rates and saving energy. The adjustment volume of the tank is small, and its adjustment volume accounts for less than ...

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Problems solved by technology

[0002] Tank-type stacked water supply equipment has the advantages of energy saving, sanitation, less land occupation, low investment, and convenient management and maintenance. It has been widely used in secondary water supply fields such as residences, offices, shops, hospitals, and schools. When the equipment has a small flow rate, it cannot solve the energy-saving problem that the water pump deviates from the high-efficiency zone. Therefore, many tank-type superimposed water supply equipment on the market are equipped with air pressure water tanks at the water outlets, aiming at maintaining pressure at low flow rates and saving energy. The adjustment volume of the tank is small, and its adjustment volume accounts for less than 1 / 3 of the total volume. Increasing the adjustment volume will inevitably increase the total volume of the pressure water tank, which not only increases the investment, but also takes up space for installation. Therefore, the tank-type stacked water supply The diameter of the air pressure water tank set in the equipment is often below φ800mm, and the adjustment volume is less than 0.3m 3 , the energy-saving effect brought by small flow pressure holding is very limited, and some are almost zero, just for decoration

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