CN2866988Y - Air control valve for solar water heater - Google Patents

Abstract

The utility model provides a valve for controlling water in and out of a solar water heater. Existing solar water heaters use hot water to retain water in the outlet pipe, which will turn into cold water when used next time, and the hot water must be used only after the cold water is released, which is inconvenient and wastes water. The utility model overcomes the deficiencies in the prior art. It includes an air bag and a valve body. The upper shell and the lower shell are screwed together with the middle shell respectively; The through hole at the top of the lower shell communicates with the outside of the lower shell, the outer wall of the trachea port is sealed with the lower shell, and there is a water outlet on the lower shell; the tapered plunger is integrated with the guide rod, and the center of the middle shell has a cone The tapered hole corresponding to the shaped plunger, the tapered plunger and the tapered hole are movably matched; the end of the guide rod is located in the guide hole of the upper casing, the guide rod is equipped with a spring, and the upper casing has an upper nozzle. A piston is arranged between the air bag and the tapered plunger.

Description

Air control valve for solar water heater

technical field

The utility model relates to a valve, in particular to a valve used for controlling water in and out of a solar water heater.

Background technique

At present, solar water heaters are widely used in people's home life. Existing solar water heaters are all installed on the roof. When using hot water, there is cold water in the outlet pipe, so you must wait for the cold water to run out before you can use hot water; In the water pipe, when the hot water is used next time, this part of the hot water has become cold water, and the above-mentioned use process will occur again. Therefore, existing solar water heaters not only waste thermal energy, but also waste water resources, and can not use hot water immediately. When the solar water heater is farther away from the user's floor, this phenomenon is more serious. Therefore, many low-rise households do not install solar water heaters. In view of the above problems, there are also solutions to install solenoid valves. Because the solenoid valve works with electricity, it must be installed on the roof of the building. It is easy to bring safety hazards through wind, rain, and sun for many years. Moreover, it cannot be used normally when the power is cut off, which brings a lot of inconvenience to users.

Contents of the invention

In order to overcome the problem of unsafe and unreliable use of the solenoid valve for controlling the water in and out of the existing solar water heater, the utility model provides a water in and out control valve for the solar water heater, which can safely and reliably control the water in and out of the solar water heater.

The technical scheme of the utility model is: it includes an air bag and a valve body, the upper shell and the lower shell are screwed together with the middle shell respectively; The through hole at the top communicates with the outside of the lower shell, the outer wall of the trachea port is sealed with the lower shell, and there is a water outlet on the lower shell; the tapered plunger is integrated with the guide rod, and the center of the middle shell has a Corresponding to the tapered hole, the tapered plunger is movably matched with the tapered hole; the end of the guide rod is located in the guide hole of the upper casing, the guide rod is equipped with a spring, and the upper casing has an upper nozzle.

A piston is installed between the air bag and the tapered plunger.

The beneficial effect of the utility model is that the use of the air bag as the power source for valve opening and closing control is safer and more convenient.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described

Fig. 1 is the structural representation of the utility model.

In Fig. 1, 1. trachea mouth, 2. air bag, 3. piston, 4. lower housing, 5. tapered plunger, 6. middle housing, 7. upper nozzle, 8. upper housing, 9. guide rod , 10. Guide hole, 11. Spring, 12. Water outlet.

Detailed ways

In Fig. 1, the air bag (2) is contained in the valve body. The upper casing (8) and the lower casing (4) are screwed together with the middle casing (6) respectively, the air bag (2) is positioned at the top of the lower casing (4), and the trachea mouth ( 1) communicate with the outside of the lower housing (4) through the through hole at the top of the lower housing (4). Between the outer wall of the trachea port (1) and the lower housing (4), seal with a sealing ring or sealant to prevent water leakage. The lower casing (4) is provided with a water outlet (12), which is convenient to be connected with the water inlet and outlet pipes. The tapered plunger (5) is integrated with the guide rod (9), and the center of the middle casing (6) has a tapered hole corresponding to the tapered plunger (5), and the tapered plunger (5) passes through the guide rod (9) and spring (11) are movably matched with the tapered hole. The end of the guide rod (9) is located in the guide hole (10) of the upper housing (8), the guide rod (9) is equipped with a spring (11), and the upper housing (8) is provided with an upper nozzle (7). For improving the reliability of work, also can load onto piston (3) between air bag (2) and tapered plunger (5). Connect the water outlet of the solar water heater with the upper water outlet (7), connect the lower water outlet (12) with the hot water pipe, connect the air pipe mouth (1) with the air pipe, and install an air nozzle with a valve core at the end of the air pipe. The gas nozzle is connected with the gas cylinder. A vent valve is installed on the trachea. The working process of the utility model is as follows: when using for the first time, close the deflation valve, operate the gas cylinder to expand the volume of the air bag (2), and the expanded air bag (2) pushes the tapered plunger (5) to move, thereby opening the valve. At this time, when the tap water supply valve is opened, the tap water will inject cold water into the solar water heater through the water inlet (12), the valve and the water inlet (7); During the valve on the hot water pipe, the hot water in the solar water heater finally flows out from the valve on the hot water pipe by the upper water port (7), the valve and the lower water port (12). After use, open the release valve to discharge the gas in the air bag (2) until the valve resets and closes. When using hot water for the first time after going up the cold water, still retain cold water in the hot water pipe that links to each other with water outlet (12), but after using once hot water, no longer stay water in the hot water pipe.

Claims (2)

1. A solar water heater air control valve, comprising an air bag (2) and a valve body, is characterized in that: the upper casing (8) and the lower casing (4) are respectively integrally screwed with the middle casing (6); the air bag (2) Located at the top of the lower housing (4), the trachea port (1) integrated with the air bag (2) communicates with the outside of the lower housing (4) through the through hole at the top of the lower housing (4), and the trachea port (1) ) is sealed between the outer wall and the lower casing (4), and the lower casing (4) has a water outlet (12); the tapered plunger (5) is integrated with the guide rod (9), and the center of the middle casing (6) There is a tapered hole corresponding to the tapered plunger (5), and the tapered plunger (5) is movably matched with the tapered hole; the end of the guide rod (9) is located in the guide hole (10) of the upper casing (8) Among them, a spring (11) is housed on the guide rod (9), and an upper nozzle (7) is arranged on the upper housing (8). 2. An air control valve for a solar water heater according to claim 1, characterized in that a piston (3) is installed between the air bag (2) and the tapered plunger (5).