Multifunctional valve having pipeline drainage function

Abstract

The invention discloses a multifunctional valve having a pipeline drainage function. The multifunctional valve comprises a valve body and a valve core, wherein a cold water inlet, a water consumption port and a hot water inlet are arranged on the valve body, and the valve core can be used for connecting or closing the cold water inlet, the water consumption port and the hot water inlet under the action of a handle, so that various operations such as water feeding and water mixing for a solar water heater can be achieved; a ventilating port is arranged on the valve body, one end of the ventilating port is communicated with the atmosphere through the valve core, the other end of the ventilating port is provided with a ventilating pipeline to be communicated with a highest point of a water inlet pipe and a highest point of a water outlet pipe of the solar water heater, and when the valve core is located at a position under the action of the handle, the ventilating port is connected with the ventilating pipeline between the water inlet pipe and the water outlet pipe of the solar water heater at the same time when the hot water inlet is connected with the water consumption port. By the aid of the multifunctional valve, residual water in the water inlet pipe and the water outlet pipe can be drained after water consumption and water feeding of the solar water heater are finished, and the multifunctional valve has the advantages of being simple in structure, safe and convenient to use and reliable in performance.

Description

[0001] technical field [0002] The invention relates to a valve for supplying and mixing water for solar energy, in particular to a multifunctional valve with the function of emptying pipelines. Background technique [0003] At present, solar water heaters have been used more and more because of their remarkable energy-saving and environmental protection characteristics. However, in the process of use, especially when the temperature is low, the outdoor pipes have unused water. When the temperature is low, the outdoor water inlet and outlet pipes are often blocked by freezing, which not only causes the waste of water sources, but also seriously Affect the normal use of solar water heaters. For solving the problems referred to above, people have also thought of various ways, mainly contain following three kinds: 1, adopt pipeline heating belt; 2, adopt electronic emptying valve; However, the above-mentioned various methods have also produced many problems in the process of...

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Problems solved by technology

However, the above-mentioned various methods have also produced many problems in the process of use, such as unsafe electric heating cables, which are easy to cause fires and personal electric shock accidents, high energy consumption, and short life; Unstable; using superconducting heat pipe technology, the cost of the existing technology is expensive, the performance is average, and it is difficult to popularize and apply

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