CN2596130Y - Pipeline emptying valve of solar water heater - Google Patents

Abstract

The utility model discloses a solar water heater pipeline drain valve, comprising a valve body installed in a water tank and connected from top to bottom, the bottom port of the valve body is a water port, the upper part of the valve body is a vent hole, a water outlet is arranged in the middle of the valve body, a cavity piston is installed in the valve body, an upper adjustment bolt is arranged in the valve body above the piston, a lower adjustment bolt is arranged in the valve body below the piston, an upper electromagnetic coil is installed in the valve body above the water outlet, and a lower electromagnetic coil is installed in the valve body below the water outlet. When the utility model connects the upper electromagnetic coil, the piston moves upward, the water outlet is opened, and the hot water in the water tank flows into the upper and lower water pipes and enters the room, and when the lower electromagnetic coil is connected, the piston moves downward, the water outlet is closed, and the water in the upper and lower water pipes is drained, effectively preventing the pipeline from freezing and blocking. The utility model can significantly improve the performance of the solar water heater, and has a simple structure, low production cost, safe and convenient use, and is conducive to the popularization of solar water heaters.

Description

Solar water heater pipe emptying valve

Technical Field The utility model relates to a valve, in particular to a solar water heater emptying valve used on a solar water heater to control the emptying of pipelines.

BACKGROUND OF THE INVENTION Solar water heaters are popular among people due to their advantages of energy saving, safety and sanitation, and ease of use, and are gradually being widely used in cities and towns. However, due to the relatively cold winter in the northern region, the use of solar water heaters in winter has the problem of freezing and blocking the upper and lower water pipes. This problem has not been solved satisfactorily for many years. In order to solve this problem, the pipeline emptying valve is basically used now. , Drain the water in the pipeline to avoid freezing blockage. There are many problems in the use of existing pipeline emptying valves, mainly in the following aspects: 1. The existing emptying valves use micro-motors to control the opening and closing of the emptying valves, so the torque-changing gears of micro-motors A variety of reasons, such as wear, damage, loosening of gear fixing parts, water seal leakage of the transmission shaft, motor failure, etc., will cause the exhaust valve to fail, so that the exhaust valve cannot work normally; 2. The existing exhaust valve vent hole They are all located outside the water tank, and there are many disadvantages of setting the vent hole outside the water tank. Sometimes the vent hole is blocked by freezing in winter. After freezing, the upper and lower water pipes are vacuumed, so that the exhaust valve cannot be emptied, and the seal of the vent hole is not tight. Water leaks from time to time, and water leakage from the air hole in winter will easily freeze the emptying valve, causing the emptying valve to fail to work; The core is twisted to pieces, so that the emptying valve is not closed tightly, and the phenomenon that it cannot be emptied occurs; 4, the existing emptying valve must be opened before the emptying valve can be filled with water, which is cumbersome and inconvenient to use. In a word, there are many problems in the existing emptying valve, and the failure rate is too high, which brings a lot of troubles to after-sales maintenance, dissatisfaction of users, and even affects the reputation of solar water heaters, resulting in negative effects.

SUMMARY OF THE INVENTION The purpose of this utility model is to provide a solar water heater pipeline emptying valve with reliable performance, simple structure, strong practicability, convenient use and durability.

The purpose of this utility model is achieved by the following technical solutions:

A solar water heater pipe emptying valve, comprising a valve body installed in the water tank up and down through the valve body, the bottom port of the valve body is a water outlet, the upper port of the valve body above the water surface is a vent hole, the valve body There is a water outlet in the middle, and the main points of its structure are: a cavity piston is installed in the valve body, an upper adjusting bolt is arranged in the valve body above the piston to limit the stroke of the plug, and a valve body is provided to limit the stroke of the piston in the valve body below the piston. The lower adjustment bolts, the upper adjustment bolts and the lower adjustment bolts are both cavities, the electromagnetic coil is installed on the valve body at the upper part of the water outlet, and the lower electromagnetic coil is installed at the valve body at the lower part of the water outlet . When the utility model works, the upper electromagnetic coil is connected, the piston moves upward under the action of the magnetic force, the water outlet is opened, the hot water in the water tank flows into the upper and lower water pipes and enters the room, and when the lower electromagnetic coil is connected, the piston moves downward under the action of the magnetic force , close the water outlet, turn on the hot water faucet in the room at this time, the water in the upper and lower water pipes can be emptied, effectively prevent the pipeline from freezing and blocking, the use is simple and convenient, the moving distance of the piston in the valve body is adjusted by the upper adjustment bolt and the lower Bolt to control.

Piston sealing rings are respectively installed on said piston upper and lower.

The advantages of the utility model are as follows: firstly, the utility model adopts a piston valve, which overcomes the phenomenon that the magnetic core valve is easily stuck or twisted by scale and causes lax closure, and ensures the performance of the emptying valve; The emptying valve is all installed in the water tank without any other heat preservation measures, which can ensure that the emptying valve and the upper and lower water pipes will not be frozen and blocked, and the pipes will not be frozen and blocked, and there is no cold water in the pipeline. When in use, it will be discharged into the water tank of the solar water heater The hot water is easy to use and can save water; thirdly, the vent hole is set in the water tank, so that the structure of the emptying valve is simple and the performance is improved, and the vent hole will not be closed tightly, blocked, frozen, or leaked. , completely solved all the disadvantages caused by the air vent being located outside the water tank; fourth, using electromagnetic coils as power, there is no power transmission failure caused by wear and tear, the structure is simpler than that of the motor transmission, and there is basically no operating failure; fifth, the above The water is not subject to any restrictions, and the tap water can be turned on to supply water, which is extremely convenient to use; sixth, there is no operation failure, and the amount of repair and maintenance is greatly reduced; seventh, the utility model has simple structure, low production cost, convenient installation and use, and is practical Strong performance, significantly improved the performance of solar water heaters, conducive to market competition, and conducive to popularization of solar water heaters.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic structural view of the utility model.

Specific embodiments As shown in Figure 1, a solar water heater pipeline emptying valve, the emptying valve is installed in the water tank from the bottom of the water tank as a whole, the emptying valve is fixed by the fixed pressure plate 2 on the outer cylinder 12 of the water tank, and the inner bucket 14 of the water tank is connected to the water tank. Seal with valve body sealing ring 4 between the empty valves, between the outer cylinder of the water tank and the inner cylinder of the water tank is an insulation layer 13, and an overflow port 15 is provided on the top of the water tank. High temperature resistant injection molded products, the inside of the valve body is a round cavity through up and down, the bottom port of the valve body is the water outlet, the upper part of the valve body above the water surface is the air hole 10, and the middle of the valve body is provided with an outlet Water port 5, an iron cavity piston 6 is installed in said valve body, and the piston cavity is used as a vent hole for the upper and lower water pipes to communicate with the atmosphere. Piston sealing rings 7 are respectively installed on the top and bottom of the piston. There is an upper adjusting bolt 9 that limits the stroke of the piston, and a lower adjusting bolt 1 that limits the stroke of the piston is arranged in the valve body at the lower part of the piston. The upper adjusting bolt and the lower adjusting bolt are connected with the valve body by threads, and the movement of the piston in the valve body The distance is controlled by the upper adjustment bolt and the lower adjustment bolt. Adjust the position of the upper adjustment bolt and the lower adjustment bolt in the valve body according to the needs. The upper adjustment bolt and the lower adjustment bolt are both cavities. An electromagnetic coil 8 is installed outside the valve body on the top of the water outlet to open the water outlet, and an electromagnetic coil 3 is installed on the valve body at the bottom of the water outlet to close the water outlet. The opening or closing of the water outlet of the utility model is controlled by the upward and downward movement of the piston. The upward and downward movement of the piston is driven by the upper electromagnetic coil and the lower electromagnetic coil. When the upper electromagnetic coil is connected, the piston moves upward under the action of magnetic force. , the water outlet is opened, and the hot water in the water tank flows into the upper and lower water pipes and enters the room. When the lower electromagnetic coil is connected, the piston moves downward under the action of the magnetic force, and the water outlet is closed. The water is emptied, and the air is normally connected to the upper and lower water pipes through the vent hole on the top of the valve body through the cavity of the piston. There is no seal at the vent port. The above water is not limited by the opening or closing of the emptying valve.

Claims (2)

1. A solar water heater pipeline emptying valve, comprising a valve body (11) that is installed in the water tank and penetrates up and down. The bottom port of the valve body is a water outlet, and the port above the water surface on the top of the valve body is a vent hole (10), there is a water outlet (5) in the middle of the valve body, which is characterized in that: a cavity piston (6) is installed in the valve body, and the valve body on the upper part of the piston is provided with an upper adjustment bolt to limit the stroke of the piston (9), the valve body at the lower part of the piston is provided with a lower adjustment bolt (1) that limits the stroke of the piston. Both the upper adjustment bolt and the lower adjustment bolt are cavities, and are installed outside the valve body at the upper part of the water outlet. Last electromagnetic coil (8), the lower electromagnetic coil (3) is installed outside the valve body of said water outlet bottom. 2. The pipeline emptying valve for solar water heaters according to claim 1, characterized in that piston sealing rings (7) are respectively installed above and below the piston.

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