CN2733130Y - Water-supply automatic stop valve for solar water heater - Google Patents

Abstract

An automatic water supply stop valve of a solar water heater comprises a valve body, a water level pipe, a string core swim bladder and a one-way throttling joint, wherein the valve body is provided with a lower connector, a side connector and an upper connector; a communicating hole is arranged between the upper connector and the side connector, and a flow blocking wall is arranged in front of the communicating hole; the core-string swim bladder is arranged in the water level pipe and the valve body, the one-way throttling joint is connected with the indoor water pipe, and the height of the water level pipe is more than or equal to that of the water tank; the one-way throttling joint, the string core swim bladder and the flow blocking wall are arranged, so that water can be slowly supplied, the siphonage phenomenon of the communicating hole is eliminated, the water level in the water level pipe is ensured to be equal to the water level of the solar water tank, the water is quickly discharged, and the working stability and reliability of the solar water tank are ensured; when the water tank is full, the water source can be automatically closed, and the technical problem that solar water supply needs to be monitored and managed is effectively solved.

Description

Automatic shut-off valve for solar water heater

Technical field:

The utility model relates to a water supply valve of a solar water heater.

Background technique:

There are many types of automatic water supply control devices for existing solar water heaters, such as the solenoid valve control widely used in hydraulic systems in the industrial field, which is characterized by stable and reliable performance to facilitate full-automatic control, but requires power supply. Electricity involves safety issues, grid power supply should not be used, ordinary dry batteries have limited capacity, and insufficient power will directly affect the use effect if not replaced in time. Besides, the price of solenoid valves is also relatively high, so they are rarely used in general civilian solar energy. Several automatic water supply devices are also disclosed in CN2627422Y and CN2526611Y, and their characteristics are: a float chamber is equipped with the overflow port of the solar water tank to communicate with the overflow port of the solar water tank at its device top, after the water tank overflowed into the float chamber, The float floats, thereby controlling the closing of the water valve. This device is owing to needing the bulky floating ball water tank of external equipment, only relying on mouthpiece (welded on the very thin stainless steel skin liner) to be directly externally connected on the solar water tank is not only unbearable, but also troublesome to install. There are also some other types of shut-off valves, such as "float valves" and "lever valves" used in solar water tanks, which also have some defects of their own and are difficult to apply.

Invention content:

The purpose of the utility model is to provide a solar water heater automatic cut-off valve.

The solar water heater automatic cut-off valve for water supply according to the utility model includes a valve body, a water level pipe, a stringed swim bladder, and a one-way throttling joint. The valve body is provided with a lower interface, a side interface, and an upper interface. The water level pipe is sealed and connected, the side interface is connected to the water tank of the solar water heater, the lower interface is connected to the indoor water pipe, and a one-way throttling joint is provided in the lower interface; a mouth is provided in the middle of the valve body, and a lower guide is provided above the mouth There is a communication hole between the upper interface and the side interface. The actuator rod of the stringed swim bladder is inserted into the lower guide hole of the valve body. A sealing cover is installed at the lower end of the actuator rod. Below the pass, on the upper surface of the one-way throttling joint, there are peripheral oblique holes and water discharge and flow increase holes, and a single-pass sealing cover is provided below the water discharge and flow increase holes. The height of the water level pipe should be greater than or equal to the height of the water tank. .

To the improvement of the utility model, a guide pipe is also provided on the upper end of the swim bladder, and an upper guide hole is arranged on the top of the water level pipe, and the guide pipe is inserted in the upper guide hole.

As a further improvement of the utility model, a blocking wall is provided on the left side of the communicating hole.

Because there is a one-way throttling joint in the lower interface, when the water is supplied, the water flow forces the water discharge and flow increase hole to close, and the water flow can only be slowly injected into the water tank through the outer peripheral inclined hole along the wall of the valve housing cavity, so as to avoid the water flow directly impacting the sealing cover and causing malfunction. ; When water is released, the water discharge and flow increase hole is automatically opened under the action of water pressure, and the water in the water tank can flow out from the peripheral inclined hole and the water discharge and flow increase hole at the same time; Effectively eliminate the siphon phenomenon to the connecting hole, ensure the water level in the water level pipe is equal to the water level of the water tank, and ensure the stability and reliability of the utility model; the utility model only needs to be connected with the water inlet and outlet nozzles on the existing solar water heater water tank , no need to connect with the overflow nozzle, the assembly is simpler. It is compact in structure, light and handy, reliable in performance, economical and practical, and safe to use. It can automatically control the water supply to the solar water heater without a power supply. When the water tank is full, it will automatically turn off the water source without human care, which effectively solves the need for solar energy water supply. Caretaker's technical problems.

Description of drawings:

Fig. 1 is a structural schematic diagram of the utility model; Fig. 2 is a structural schematic diagram of a valve body;

In the figure: 1-valve body; 2-water level pipe; 3-swim bladder; 4-one-way throttling joint; 11-lower interface; 12-side interface; 13-upper interface; 14-pass; 15-sealing plane ;16-lower guide hole; 17-connecting hole; 18-blocking wall; 21-upper guide hole; 31-guiding pipe; 32-executive rod; 33-maw; 42-single-way sealing cover; 43-release water and increase the flow hole.

Detailed ways:

The specific embodiment of the utility model is described below in conjunction with accompanying drawing:

The utility model is made up of valve body 1, water level pipe 2, string core swim bladder 3, one-way throttling joint 4 four major components. The valve body 1 is provided with a lower interface 11, a side interface 12, and an upper interface 13. The upper interface 13 is in sealing connection with the water level pipe 2, the side interface 12 is connected with the water tank of the solar water heater, and the lower interface 13 is connected with the one-way throttling joint 4; In the middle of the valve body 1 is provided with a mouth 14, the lower end of the mouth 14 is a sealing plane 15, a lower guide hole 16 is provided above the mouth 14, and a communication hole 17 is provided between the upper interface 13 and the side interface 12. The front of the hole 17 is provided with a blocking wall 18; the stringed fish swim bladder 3 is composed of a guide tube 31, an executive rod 32, a swim bladder 33 and a sealing cover 34, and the guide tube 31 of the stringed swim bladder 3 is inserted into the upper guide hole 21 on the top of the water level pipe Among them, the actuator rod 32 is inserted in the lower guide hole 16 of the valve body, and a sealing cover 34 is installed at the lower end of the fish swim bladder actuator rod 32; the upper guide hole 21 on the water level pipe 2 and the lower guide hole 16 on the valve body 1 Coaxial, their axes are perpendicular to the sealing plane 15 at the lower end of the mouth 14; on the upper end surface of the one-way throttling joint 4 are provided with an outer peripheral oblique hole 41, a single-way sealing cover 42 and a water discharge and flow-increasing hole 43, and the single-way sealing Cover 42 is close to the below of discharge water flow increasing hole 43, and one-way throttling joint 4 links to each other with the indoor water pipe, and the height L of water level pipe 2 should be greater than or equal to the height of water tank.

The working process of the utility model is as follows: open the water supply valve in the room, and the water flow slowly bypasses the sealing cover 34 from the outer peripheral inclined hole 41 on the one-way throttling joint 4 and flows to the side interface 12 along the valve shell cavity wall to inject water into the solar water tank. At this time, the water discharge and flow increasing hole is closed; due to the effect of the blocking wall 18, a small backflow area is formed below the communication hole 17, thereby eliminating the siphon phenomenon to the communication hole 17, ensuring that the water level in the water level pipe 2 is consistent with the solar energy. The water level in the tank is consistent. When the water level in the water level pipe 2 rises to a predetermined height, the stringed swim bladder 3 floats up, driving the sealing cover 34 installed at the bottom of the actuator rod 32 to lift up, sealing the pass 14, automatically closing the water source, and stopping continuing to the solar water tank. water supply. When discharging water, under the effect of hydraulic pressure in the solar water tank, the water flow flushes the one-way sealing cover 42 in the one-way throttling joint 4, and the water in the water tank then flows out from the water discharge increasing flow hole 43 and the peripheral oblique hole 41.

Claims (3)

1. An automatic cut-off valve for solar water heater filling, which is characterized in that it includes a valve body (1), a water level pipe (2), a stringed swim bladder (3), and a one-way throttle joint (4). 1) A lower interface (11), a side interface (12), and an upper interface (13) are arranged on the top, the upper interface (13) is sealed and connected to the water level pipe (2), the side interface (12) is connected to the water tank of the solar water heater, and the lower The interface (13) is connected to the indoor water pipe, and a one-way throttling joint (4) is provided in the lower interface (13); a mouth (14) is provided in the valve body (1), and a There is a lower guide hole (16), and a communication hole (17) is provided between the upper interface (13) and the side interface (12), and the actuator rod (32) of the stringed swim bladder (3) is inserted into the lower guide hole of the valve body In (16), a seal cover (34) is installed at the lower end of the actuator rod (32), the swim bladder (33) is arranged in the water level pipe (2), and the seal cover (34) is arranged below the pass (14), in the single The upper end surface of the throttling joint (4) is provided with an outer peripheral inclined hole (41) and a water discharge and flow increase hole (43), and a one-way sealing cover (42) is provided below the water discharge and flow increase hole (43), and the water level pipe (2) The height should be greater than or equal to the height of the water tank. 2. According to claim 1, the solar water heater automatic cut-off valve is characterized in that: a guide pipe (31) is provided at the upper end of the swim bladder (33), and an upper guide hole (21) is provided at the top of the water level pipe (2). ), the guide tube (31) is inserted in the upper guide hole (21). 3. According to claim 1 or 2, the solar water heater automatic cut-off valve is characterized in that: a blocking wall (18) is provided on the left side of the communication hole (17).

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