Central hot water one-way valve and central hot water circulating system thereof

Abstract

The invention discloses a central hot water one-way valve. The central hot water one-way valve comprises a valve body 1; and a hot water inlet, a cold water inlet, a hot water outlet and a cold water outlet are formed in the valve body. The central hot water one-way valve is characterized in that a one-way valve element is arranged between the hot water inlet and the cold water outlet and the cold water inlet; a hole is formed in the valve body; and the one-way valve element is positioned on a water way in the valve body through the hole for fixation. A screw plug is sealed at the external of the mounting hole; and the one-way valve is fixed on the water way in the valve body through the screw plug. A filter screen is arranged on one side of a one-way valve body; and one end of the filter screen is ejected to the one-way valve element, and the other end is fixedly connected with the screw plug. The invention further discloses a central hot water circulating system adopting the one-way valve. The central hot water one-way valve has such advantages as convenience to mount and maintain and difficult blockage.

Description

technical field [0001] The invention relates to the technical field of one-way valves, in particular to a central hot water cooling and heating one-way valve and a central hot water circulation system. Background technique [0002] At present, the central hot water is divided into two types with return pipes and without return pipes. In order to use the instant heating function when there is no return pipe, it is necessary to install a one-way valve at the water terminal to connect the cold and hot water pipes to form a circuit. At present, the central hot water in the non-return pipeline generally chooses to add a check valve in the pipeline, but it is relatively rare to integrate the check valve into the check valve. [0003] There are many types of one-way valves for central hot water on the market, their structures are different, and their installation positions and methods are also inconsistent. At present, this type of one-way valve has the following problems: [00...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of inconvenient installation, difficult maintenance and easy blockage of the existing one-way valve in view of the deficiencies of the prior art, and propose a central hot water cooling and heating one-way valve with a one-way valve which is easy to install and maintain and is not easy to be blocked. valve

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