Steel-plastic composite water supply pressure tank

Abstract

The invention provides the technical scheme of a steel-plastic composite water supply pressure tank. The steel-plastic composite water supply pressure tank comprises a bracket, wherein a steel tank body is arranged above the bracket, two ends of the tank body are arc-shaped, the inner surface of the tank body is subjected to chemical treatment to produce a layer of protective film, an electric contact pressure relay mounting screw hole and a pressure gauge mounting screw hole are arranged above the tank body, a water inlet pipe is arranged at one side of the lower end of the tank body, a water outlet pipe is arranged at the other side of the lower end of the tank body, a safety valve screw mouth and a sewer valve screw mouth are arranged at the bottom of the tank body, and the inner part of the tank body is subjected to injection molding, so that plastic is uniformly coated on the inner surface of the steel tank body to form a 1-2mm injection molding anti-corrosion layer so as to achieve the purpose of avoiding corrosion forever.

Description

Technical field: [0001] The invention relates to an automatic water supply device, in particular to a steel-plastic composite water supply pressure tank. Background technique: [0002] In the prior art, the known water supply pressure tank is the technical solution of <water supply pressure tank> announced by the State Intellectual Property Office, the published patent number: 01220970. The steel pipe at the mouth is used as the water inlet and outlet. The water supply pressure tank of this scheme has the advantages of no corrosion, easy manufacture, and low cost. However, due to the plastic itself, it is easy to age, become brittle and crack after a long time, and is not easy to withstand pressure. There is no safety guarantee, especially no safety valve, once the pressure automatic control breaks down, there will be a danger of explosion, which will cause life danger to people. This is the weak point in the existing technology. Invention content: [0003] The purp...

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Problems solved by technology

[0002] In the prior art, the known water supply pressure tank is the technical solution of announced by the State Intellectual Property Office, the published patent number: 01220970. The steel pipe at the mouth is used as the water inlet and outlet. The water supply pressure tank of this scheme has the advantages of no corrosion, easy manufacture, and low cost. However, due to the plastic itself, it is easy to age, become brittle and crack after a long time, and is not easy to withstand pressure. There is no safety guarantee, especially no safety valve. Once the automatic pressure control fails, there will be a danger of explosion, which will endanger people's lives. This is the deficiency of the existing technology

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