Solar water heater electric, manual double-purpose pipeline empty valve

Abstract

The invention provides an electric-operated and manual-operated dual-purpose pipe blow-off valve for solar water heaters, which belongs to a valve. The invention is particularly adapted for intake and drainage pipes, which has functions of intake, drainage and emptying pipes. The invention comprises a valve body and a valve plug disposed in the inner chamber of the valve body, which is characterized in that the valve body is in an elongated pole shape, one end of the tall narrow pole is an air outlet end which extends at the top of the water tank of the solar water heater and is above water all the time, the other end of the tall narrow pole is a pipe end which is fixed on the water tank of the solar water heater and is communicated with an in-out water pipe, a magnetic coil is arranged out of the valve body, an in-out air hole is opened at one side of the air outlet end of the valve body, and an in-out water hole is opened at the position which is corresponding with a ring groove on the valve body. The valve plug is equipped with a central through-hole, an air cover is disposed at the position which is corresponding with the central through-hole on the valve body, and the valve plug portion which is corresponding with the magnetic coil is an iron work. The dual-purpose pipe blow-off valve being electric-operated and manual-operated of solar water heater not only can be manual-operated, but also be electric-operated, is simple and convenient in operation, and has not air gap when draining water.

Description

Technical field [0001] The invention belongs to a valve, which is especially suitable for the inlet and outlet pipes of solar water heaters, and has the functions of inlet and outlet and emptying the pipes. Background technique [0002] At present, solar water heater pipeline emptying valves are divided into two categories. The first category is the electric pipeline emptying valve, such as ZL99229954.3 and ZL2005b0088400.9. Their advantages are simple operation, and there are two main defects: [0003] 1. The switch of the valve is completely controlled by the circuit. Once the power is cut off, the valve cannot be switched on and off, causing inconvenience to the user; [0004] 2. When the pipeline is emptied, the valve connects the pipeline with the outside air. Therefore, in the emptied state, the pipeline is filled with air, but when the valve is in the water state, it cannot exhaust, resulting in air accumulation in the pipeline and poor water flow. The second type o...

AI Technical Summary

Problems solved by technology

[0003] 1. The switch of the valve is completely controlled by the circuit. Once the power is cut off, the valve cannot be switched on and off, causing inconvenience to the user;

[0004] 2. When the pipeline is emptied, the valve connects the pipeline with the outside air. Therefore, in the emptied state, the pipeline is filled with air, but when the valve is in the water state, it cannot exhaust, resulting in air accumulation in the pipeline and poor water flow.

The second type of pipeline emptying valve is a manual mechanical pipeline emptying valve, such as ZL200420079600.3, etc. Their advantage is that they are not controlled by power consumption and can operate normally with or without electricity. The disadvantage is that the user operation is cumbersome and not enough concise

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