Classified water mixing pump user unit

Abstract

The invention provides a classified water mixing pump user unit which comprises a water mixing pipe arranged between a water supply pipe and a water return pipe, a water mixing pump arranged on the water supply pipe in the rear of the water mixing pipe, and a classifying pump arranged on the water return pipe in the rear of the water mixing pipe. The classifying pump provides power for flowing water in a main transmission and distribution water supply pipe network to the water supply pipe; and the water mixing pump is used for mixing water in the water supply pipe and returned water in the water return pipe to obtain the water with the temperature required by a user, and then the water is supplied to the user. According to the classified water mixing pump user unit provided by the invention, the flows of a classifying pump and the water mixing pump can be changed through adjusting the motor speeds of the classifying pump and the water mixing pump, so that the problems of the oversupplyof the flow at the front end of the pipe network and the undersupply of the flow at the tail end of the pipe network are effectively solved.

Description

technical field [0001] The invention relates to the field of pipeline network transmission and distribution systems, in particular to a user unit of a graded mixed water pump. Background technique [0002] In the past few decades, my country's cooling and heating pipeline network transmission and distribution methods have adopted centralized pipeline network transmission and distribution systems. During operation, there will be excessive pressure on the resources of near-end users of the pipeline network and excessive flow; The far-end user's resource pressure is too small, the flow rate is too small, and the water mixing device installed at the user's place in the centralized cooling and heating pipe network transmission and distribution system is equipped with a throttling valve, which consumes the excess pressure of the near-end pipe network and generates waste. Power consumption reduces the transmission efficiency of cooling and heating pipe networks. [0003] Therefore, ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a user unit of graded mixed water pump, which installs graded pump and mixed water pump on the water supply pipe, which solves the problem that the throttling valve in the prior art consumes a large amount of power consumption of the pipe network and causes excessive flow at the front end of the pipe network , the terminal flow supply is insufficient, which makes the hydraulic imbalance of the pipe network, resulting in the loss of cooling and heat transmission and distribution, and the problem of wasting electric energy

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