Pneumatic emptying device for solar water heater pipe

Abstract

The invention discloses a pneumatic emptying device for a solar water heater pipe. The pneumatic emptying device comprises a seal plug, wherein the seal plug is mounted on a reserved opening in the bottom of a solar water heater water tank. The seal plug is provided with a water pipe joint and an air pipe joint. The upper end of the water pipe joint is connected with a rubber water pipe, and an air bag is fixed to the upper end of the rubber water pipe. The upper end of the air pipe joint is connected with a rubber air pipe, and the upper end of the rubber air pipe communicates with the air bag. The lower end of the water pipe joint is connected with a water delivery pipe. The lower end of the air pipe joint is connected with an air exhausting device. The pneumatic emptying device is simple in structure, stable in performance, low in failure rate and long in service life, and the problems that a solar water heater pipe used in a cold region is blocked due to freeze in winter, and coldwater exists in the pipe are solved.

Description

technical field [0001] The invention belongs to the technical field of solar water heaters, in particular to a pneumatic emptying device for pipelines of solar water heaters. Background technique [0002] Solar water heaters are energy-saving and environmentally friendly, and are deeply loved by people. The water delivery pipe joints of traditional solar water heaters are all at the bottom of the water tank. As long as there is water in the solar water heater tank, the water delivery pipeline will always maintain a state of water. In cold areas, the outdoor temperature is very low in winter, and solar water heaters have the problems of freezing water pipelines and cold water in pipelines. The traditional solution is to use electric heating belts to keep water pipelines warm. Long-term energization and heat preservation of electric heating belts consume a lot of electric energy, resulting in energy waste. Temporary energization and thawing before using hot water requires wai...

AI Technical Summary

Problems solved by technology

Long-term energization and heat preservation of electric heating belts consume a lot of power, resulting in waste of energy. Temporary power-on thawing before using hot water requires waiting for a period of time, which is very inconvenient to use

In order to solve the problem of freezing pipelines of solar water heaters in cold areas in winter, researchers in the industry have developed various types of pipeline emptying valves for many years, but all of them cannot be used because of the high failure rate of the emptying valves. Today, There is still no ideal solar water heater pipeline emptying valve product that can be popularized and applied

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