Pressure water storage barrel

Abstract

The invention relates to a pressure water storage barrel, which comprises a barrel body, wherein the barrel body is provided with an inner cavity, and consists of an upper cover and a lower cover through being connected in a sealed way, a flexible separation film is tightly pressed and fixed between the upper cover and the lower cover, the inner cavity of the barrel body can be separated into a purified water cavity and an air cavity through the flexible separation film, and a water inlet and outlet opening of the purified water cavity is communicated with a purified water inlet and outlet opening of a reverse osmosis film unit through a pipeline. The invention is characterized in that a pressure limiting assembly is arranged on the communication pipeline of the pressure water storage barrel and the purified water inlet and outlet opening of the reverse osmosis film unit, and a water inlet opening of the pressure limiting assembly is communicated with the water inlet and outlet opening of the reverse osmosis film unit, and a water outlet opening of the pressure limiting assembly is communicated with the water inlet and outlet opening of the purified water cavity. The invention has the advantages that the potential safety hazard on the work of a purified water machine system by increase of water pressure in the pressure storage barrel can be avoided, at the same time, the requirement on the materials of the prepared pressure water storage barrel and the pressure bearing design parameters is lowered, and the cost is reduced.

Description

technical field [0001] The invention relates to a pressure water storage tank. Background technique [0002] With the development of the economy, the situation of water resources has deteriorated in many places. The shortage and pollution of water resources have become more and more serious, and the problem of drinking water safety for urban residents has become prominent. Aiming at the secondary pollution of tap water in cities and the persistent presence of harmful substances in tap water due to source water pollution, more and more household water purifiers with reverse osmosis membrane as the core filter unit have entered thousands of households. The existing household pure water machine uses the reverse osmosis membrane as the core filter unit. After multi-stage pretreatment and pressurization of tap water, it enters the water unit of the pure water machine. The pure water produced can fully meet the domestic drinking needs of developed countries. water standard. [0...

AI Technical Summary

Problems solved by technology

However, when the high-pressure switch breaks down, it is impossible to effectively control the increase in water pressure in the pressure water storage tank, resulting in the following two problems: 1. With the increase of the water pressure in the pressure water storage tank, the pure water There are potential safety hazards in the work of the machine system; 2. The materials and design parameters of the prepared pressure water storage tank have great requirements for pressure bearing, which leads to high manufacturing cost of the pressure water storage tank

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