CN201162830Y - Antifreeze, anti-backflow, water-saving and energy-saving valve for solar water heater pipeline - Google Patents

Abstract

The utility model discloses a solar water heater pipeline antifreeze anti-backflow water-saving energy-saving valve, which is characterized in that it is composed of a direct current solenoid valve and a one-way pressure valve. The direct current solenoid valve is mainly composed of a coil, a valve core cover, a The valve core in the body and the permanent magnet on the valve core are formed, and the coil is arranged around the valve core cover; the one-way pressure valve is composed of a cone valve core, a pressure regulating nut and a spring installed in the valve body, and the one-way pressure valve The inlet communicates with the atmosphere, and its outlet communicates with the inlet and outlet pipes in the valve body. Because the utility model is designed with a direct current solenoid valve and a one-way pressure valve, the hot water in the upper and lower water pipes of the solar water heater can be fully utilized, the utilization rate of water in the upper and lower water pipes is improved, and the pipeline of the solar water heater is avoided at the same time. The phenomenon of being frozen and cracked in winter.

Description

Antifreeze, anti-backflow, water-saving and energy-saving valve for solar water heater pipeline

technical field

The utility model relates to a valve for an upper and lower water pipeline of a solar water heater, in particular to an antifreeze, backflow, water-saving and energy-saving valve for the pipeline of a solar water heater.

Background technique

The upper and lower water pipelines of solar water heaters will freeze and crack in the northern regions in winter. At present, the pipeline moisturizing method is used and wrapped with thermal insulation materials. But even using thicker insulation doesn't prevent freezing. Also have to add electric heating tape in insulation material, but effect is undesirable and power consumption. The use of alpine-resistant pipes cannot prevent freezing blockage. Depending on the floor, the water stored in the pipeline can range from one liter to several liters, and it will be wasted in the next use after heat dissipation and cooling.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art, and provide a water-saving and energy-saving valve for improving the utilization rate of water resources and preventing the pipeline of the solar water heater from being blocked or cracked by freezing in winter.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a solar water heater pipeline anti-freeze anti-backflow water-saving energy-saving valve, which is characterized in that it is composed of a DC solenoid valve and a one-way pressure valve, and the DC solenoid valve is mainly composed of The coil, the spool cover, the spool installed in the valve body and the permanent magnet on the spool, the coil is arranged around the spool cover; the one-way pressure valve is composed of a cone spool installed in the valve body, a pressure regulating nut and The one-way pressure valve is composed of a spring, the inlet of the one-way pressure valve communicates with the atmosphere, and its outlet communicates with the water inlet and outlet pipes in the valve body.

A coil cover is provided outside the coil; a buffer pad is installed inside the valve core cover; a sealing pad is provided at the bottom of the valve core; a sealing ring is provided between the valve core cover and the valve body.

Compared with the prior art, the utility model has the following advantages: because the utility model is designed with a direct-current solenoid valve and a one-way pressure valve, the hot water in the upper and lower water pipes of the solar water heater can be fully utilized, and the water in the upper and lower water pipes is improved. Water utilization rate, while avoiding the phenomenon that the solar water heater pipeline is frozen and cracked in winter.

Description of drawings

Fig. 1 is a structural schematic diagram of existing solar water heater pipelines.

Fig. 2 is a structural schematic diagram of a pipeline of a solar water heater installed with the utility model.

Fig. 3 is a structural schematic diagram of the utility model.

In Fig. 1, Fig. 2, and Fig. 3: 1 water tank, 2 overflow pipe, 3 upper and lower water pipes, 4 water mixing valve, 5 water supply valve, 6 indoor, 7 tap water pipe, 8 solar water heater pipeline antifreeze, anti-backflow, water saving and energy saving Valve, 8-1 nut, 8-2 spool cover, 8-3 cushion, 8-4 coil, 8-5 coil cover, 8-6 permanent magnet, 8-7 sealing ring, 8-8 spool, 8 -9 gasket, 8-10 screw, 8-11 valve body, 8-12 pressure regulating nut, 8-13 cone valve core, 8-14 spring.

Below in conjunction with accompanying drawing, the utility model is further described:

Detailed ways

The pipeline of the existing solar water heater is shown in Figure 1. During use, open the water supply valve 5, close the water supply valve 5 after the water tank 1 is full, and the water in the water tank 1 is heated and stored. Open the water mixing valve 4 to use, the hot water just flows out after the cold water in the upper and lower water pipes 3 has flowed out, and the water mixing valve 4 is closed, and the heavy hot water heat dissipation in the pipeline becomes cool. Repeat in next use, winter is very cold, this part of water utilization rate is very low, causes repeated waste, outdoors, this part of water is the reason that causes upper and lower water pipes 3 to freeze and crack.

As shown in Figure 2, the utility model solar water heater pipeline antifreeze anti-backflow water-saving energy-saving valve 8 is installed near the water tank 1 at the uppermost end of the upper and lower water pipes 3. When the valve is closed, the water in the water tank 1 and the upper and lower water pipes 3 pipelines is cut off. The water in the pipeline utilizes its own pressure to inhale air and continue to flow downward, so that the hot water in the pipeline can be fully utilized, and at the same time, the purpose of antifreezing, water saving and energy saving can be achieved.

A solar water heater pipeline antifreeze anti-backflow water-saving energy-saving valve as shown in Figure 3 is composed of a DC solenoid valve and a one-way pressure valve. The DC solenoid valve is mainly composed of a coil 8-4 and a valve core cover 8-2 1. The spool 8-8 installed in the valve body 8-11 and the permanent magnet 8-6 on the spool 8-8 are formed, and the coil 8-4 is arranged around the spool cover 8-2; the one-way pressure valve It is composed of a cone valve core 8-13 installed in the valve body 8-11, a pressure regulating nut 8-12 and a spring 8-14. The inlet of the one-way pressure valve is connected to the atmosphere, and its outlet is connected to the inside of the valve body 8-8. The inlet and outlet pipes are connected. The upper and lower parts of the spool cover 8-2 are made of a paramagnetic substance, and the middle part is made of a diamagnetic substance.

As shown in Figure 3, the coil 8-4 is provided with a coil cover 8-5; the valve core cover 8-2 is equipped with a buffer pad 8-3; the bottom of the valve core 8-8 is passed through the screw 8- 10 is provided with a sealing gasket 8-9; a sealing ring 8-7 is provided between the valve core cover 8-2 and the valve body 8-11.

During flooding, water upwards jacks up spool 8-8 and enters water tank 1 along pipeline, and after spool 8-8 jacks up, spool 8-8 bears the same force up and down. The height that the spool 8-8 rises depends on the flow rate. When the spool 8-8 rises by 5-7 millimeters, the flow area is the same as the cross-sectional area of the pipeline. Now the permanent magnet 8-6 is greater than the attraction to the top to the spool cover 8-2 bottom. When the water supply is stopped or the water pressure is insufficient, the spool 8-8 closes the water outlet downwards to prevent backflow. After stopping the water supply, the pipeline is full of water, which cannot prevent freezing and blocking. Open the water mixing valve 4 and drain the water in the pipeline to prevent freezing and blocking. During use, the coil 8-4 is connected with direct current, and when the direction of the magnetic field generated by the coil 8-4 is the same as the direction of the magnetic field generated by the permanent magnet 8-6, the spool 8-8 opens upwards and connects with the upper part of the spool cover 8-2. The paramagnetic substances attract each other, and when opposite, the spool 8-8 closes the water outlet downwards, and keeps closing after power failure. At this time, the pressure in the pipeline is the atmospheric pressure minus the water pressure. Since the pressure in the pipeline is less than the atmospheric pressure, the cone valve core 8-13 opens, air enters the pipeline, and the water in the pipeline continues to flow out from the water mixing valve 4 until the pressure is balanced. . This process is repeated for the next use. Since there is a large amount of cold water in the pipeline only after water supply, and there is only a small amount of water in the pipeline after each use, the hot water in the pipeline can be fully utilized, improving the utilization rate of water resources and reducing heat loss. , and a small amount of water is concentrated at the bottom of the pipeline, all located indoors 6, to prevent freezing blockage and cracking. The antifreeze, backflow, water-saving and energy-saving energy-saving valve 8 of the pipeline of the solar water heater is very close to the water tank 1, and it is subjected to the effect of heat transfer and properly insulated, so that it itself will not be frozen.

During the process of water flowing out from the water tank 1 and discharging air to the water mixing valve 4, the water in the pipeline is accelerated by gravity for a period of time. At this time, the pressure in the pipeline is less than atmospheric pressure. In order to prevent new air from being sucked into the pipeline , The one-way pressure valve should be pre-adjusted to a pressure. When the pre-pressure is greater than 400 mm of water column through the test, the gas will not be sucked into the pipeline. When the water in the pipeline is constantly flowing or the mixing valve 4 is closed, the cone valve core 8-13 is closed under pressure.

The utility model is only energized when changing the position of the spool, so it saves electricity very much. In the period of use of the solar water heater, only switch the antifreeze, anti-backflow, water-saving and energy-saving valve of the solar water heater pipeline at the beginning and end, and switch the mixing valve during use, which will not cause cumbersome use.

Claims (5)

1. A solar water heater pipeline antifreeze anti-backflow water-saving energy-saving valve is characterized in that it is composed of a DC solenoid valve and a one-way pressure valve. The DC solenoid valve is mainly composed of a coil (8-4), a valve core cover (8 -2), the spool (8-8) installed in the valve body (8-11) and the permanent magnet (8-6) on the spool (8-8) are composed, and the coil (8-4) is located in the valve Around the core cover (8-2); the one-way pressure valve consists of a cone valve core (8-13), a pressure regulating nut (8-12) and a spring (8-14) installed in the valve body (8-11). ) form, the inlet of the one-way pressure valve communicates with the atmosphere, and its outlet communicates with the inlet and outlet pipes in the valve body (8-8). 2. The antifreeze, anti-backflow, water-saving and energy-saving valve for solar water heater pipelines according to claim 1, characterized in that the coil (8-4) is provided with a coil cover (8-5) outside. 3. The solar water heater pipeline anti-freezing, anti-backflow, water-saving and energy-saving valve according to claim 1, characterized in that a buffer pad (8-3) is installed inside the valve core cover (8-2). 4. The solar water heater pipeline anti-freezing, anti-backflow, water-saving and energy-saving valve according to claim 1, characterized in that a sealing gasket (8-9) is provided at the bottom of the valve core (8-8). 5. The antifreeze, anti-backflow, water-saving and energy-saving valve for solar water heater pipelines according to claim 1, characterized in that a sealing ring (8- 7).

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