Balance pressure water compensating valve

Abstract

The present invention provides a constant-pressure water replenishing valve, pertaining to valve technique field. The present invention resolves problems that strict lower stream water return current can not be achieved, water replenishing pressure error is large in the existing water replenishing equipment. The constant-pressure water replenishing valve includes a valve body with a water inlet and a water outlet, the valve body is separated into a chamber 1 and a chamber 2 by a separation plate, a spring 1 and a sealing member are respectively arranged in the chamber 1 and the chamber 2, the chamber 1 communicates with the water inlet, the chamber 2 communicates with the water outlet, a through hole 1 for communicating the chamber 1 and the chamber 2 is arranged on the separation plate, a valve core base having a through hole 2 is arranged in the chamber 1, the spring 1 and the sealing member are provided respectively in the valve core base, the sealing member contacts with the through hole 2 to seal in effect of the spring 1. The constant-pressure water replenishing valve has advantages of automatically replenishing water and preventing water reverse flow for the water outlet, and integrating functions of replenishing water automatically, stopping water return, reducing pressure.

Description

technical field [0001] The invention belongs to the technical field of valves, and relates to a water replenishing device for air-conditioning and heating systems, in particular to a constant-pressure water replenishing valve with a decompression function and capable of preventing water from flowing backward. Background technique [0002] As we all know, air-conditioning and refrigeration equipment, boilers and heating systems must use constant pressure water replenishment and devices to treat the water quality of the above systems to ensure that the system does not vaporize, not empty, not overpressure and not corroded. Traditionally, water tanks are used. Constant pressure hydration. Later, people used the replenishment valve to replenish water. The function of the replenishment valve is that when the downstream water pressure is insufficient, the valve will automatically open to replenish water, and it will automatically close after replenishment. However, because the ex...

AI Technical Summary

Problems solved by technology

However, because the existing replenishment valve cannot strictly control the backflow, abnormal phenomena often occur in the water delivery pipeline, and the downstream water backflow occurs when the upstream inlet water pressure decreases or the water is cut off; Closing the replenishment valve cannot achieve the effect of automatic decompression, so the combination of replenishment valve and safety valve is generally used for installation, but this is labor-intensive and costly. Large error in water supply pressure, causing adverse hidden dangers to air-conditioning equipment and heating systems

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