The utility model provides a thermal insulation device for an overflow port of a water storage tank of a solar water heater, which aims to ensure that the overflow port not only has overflow and air outlet functions, but also has thermal insulation effect. The technical scheme of the utility model is that
The utility model mainly consists of a three-way pipe and two one-way valves, the middle part of the three-way pipe is connected with the overflow port of the water storage tank, and the other upper and lower ports are connected with the one-way valves respectively, and the opening directions of the two one-way valves are opposite. Among them, the one-way valve body connected to the upper port of the tee is in an open state upward, and the one-way valve body connected to the lower port of the tee is in an open state downward.
The utility model has the advantages that (1) can automatically realize the overflow function. When the water inflow of the water storage tank exceeds the overflow hole position, the one-way valve located below the overflow hole position is subjected to the gravity of water, that is, it automatically opens to discharge the overflow water.
(2) The utility model can automatically realize the air outlet function. When the air pressure of the water storage tank is too high, the one-way valve located above the overflow hole is pushed open by the air pressure to automatically exhaust and decompress.
(3) In the normal state that people don't use the hot water in the water storage tank, the two one-way valves are in the closed state, so that the hot air in the water storage tank won't overflow and play the role of heat preservation.
(4) When people need to use the hot water in the water storage tank, they can use the control device of the lower one-way valve to open the closed body to make the water storage tank communicate with the atmosphere. As long as the valve body of the hot water outlet is opened, the hot water can flow out smoothly.
The attached drawing is the structural schematic diagram of the utility model connected with the water storage tank.
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As shown in the figure,
The utility model mainly consists of a tee 1, an upper one-way width 2 and a lower one-way valve 3, wherein the middle channel 1 1 of the tee is connected with the overflow port 4 1 of the water storage tank 4, and the upper channel 12 is connected with the upper one-way valve 2; The through hole 13 at its lower end is connected with the lower check valve 3, and the valve bodies of the upper check valve and the lower check valve are opened in opposite directions. Wherein, the upper one-way valve body 2 1 faces upwards when in the open state, and the lower one-way valve body 3 1 faces downwards when in the open state. In another drawing, 42 denotes a water inlet and a water outlet of a water storage tank.
The utility model can achieve the expected invention purpose.
Claim 1, the thermal insulation device for the overflow port of the water storage tank of solar water heater, is characterized by mainly consisting of a tee pipe and two check valves, wherein the middle channel of the tee pipe is connected with the overflow port of the water storage tank, the other upper and lower ports are connected with the check valves respectively, and the opening directions of the two check valves are opposite, wherein the opening state of the check valve body connected with the upper port of the tee pipe is upward, and it is connected with the check valve body connected with the lower port of the tee pipe.
The utility model relates to an overflow heat preservation device for a water storage tank of a solar water heater. The device mainly consists of a three-way pipe and two one-way valves. The middle port of the tee pipe is connected with the overflow port of the water storage tank, and the other upper and lower ports are connected with one-way valves respectively, and the opening directions of the two one-way valves are opposite. The open state of the check valve body at the upper port is upward, and the open state of the check valve body at the lower port is downward. The utility model can automatically realize the functions of overflow and ventilation, and has good heat preservation effect on the premise of ensuring the above functions.