CN217603423U - Water return valve and zero-cold-water supply system - Google Patents

Abstract

The utility model provides a water return valve and a zero-cold water supply system, which relate to the technical field of water supply systems, wherein the water return valve comprises a three-way pipe and a one-way valve; the three-way pipe is provided with a water inlet flow passage and a circulating flow passage, and one end of the circulating flow passage is communicated with the water inlet flow passage; the three-way pipe is provided with two three-way pipes, and the inlet and the outlet of the one-way valve are respectively connected with the two circulating flow passages; the check valve is connected with the two three-way pipes through a first detachable connecting structure and a second detachable connecting structure respectively. The zero cold water supply system includes a return valve. Through this backwater valve, solved current H type backwater valve and needed the technical problem that a whole set of used in the water supply system who has the return water pipeline, practiced thrift man-hour of installation and assisted material.

Description

Water return valve and zero-cold-water supply system

Technical Field

The utility model belongs to the technical field of water supply system technique and specifically relates to a return valve and zero cold water supply system are related to.

Background

The water supply system, such as a water heater water supply system or a wall-mounted furnace water supply system, is used for providing water for a user, and generally comprises a gas heating device (such as a gas water heater or a wall-mounted furnace), a cold water pipe, a hot water pipe, a water mixing device and a water outlet end, wherein the water outlet end is connected with the gas heating device through the cold water pipe, the hot water pipe and the water mixing device.

In the related art, in order to make the water supply system have a zero-cold-water function, an H-shaped water return valve having a check valve is usually added in the water supply system to form a water return waterway in the water supply system. Because the check valve is arranged in the H-shaped water return valve, when a water return pipeline is reserved in a user house, the whole set of H-shaped water return valve needs to be used, so that installation parts such as plugs need to be added, the whole set of H-shaped water return valve is large in size and multiple in joint, when the H-shaped water return valve is installed below a gas water heater, the whole attractiveness is affected, and meanwhile, the number of the plugs and the number of the pipelines which extend out of the H-shaped water return valve is large, and the hidden danger of water leakage is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a return water valve and zero cold water supply system to alleviate H type return water valve in the correlation technique and need the technical problem of a whole set of use in the water supply system that has return water pipeline.

In order to solve the technical problem, the utility model discloses the technical means who takes does:

first aspect, the utility model provides a return water valve includes: a three-way pipe and a one-way valve;

the three-way pipe is provided with a water inlet flow passage and a circulating flow passage, and one end of the circulating flow passage is communicated with the water inlet flow passage;

the three-way pipe is provided with two three-way pipes, and the inlet and the outlet of the one-way valve are respectively connected with the two circulating flow passages;

the check valves are connected with the two three-way pipes through a first detachable connecting structure and a second detachable connecting structure respectively.

Further, the first detachable connecting structure comprises a first male thread and a first female thread matched with the first male thread;

one of the first male thread and the first female thread is provided at an inlet of the check valve, and the other is provided at a free end of the circulation flow passage.

Further, a first external thread joint and a first loose joint nut are arranged between the one-way valve and the three-way pipe;

the first external thread joint is arranged on the one-way valve, and the first loose joint nut is arranged on the three-way pipe;

the first male thread is arranged on the first outer thread joint, and the first female thread is arranged on the first loose joint nut.

Further, a first sealing gasket is arranged between the first external thread joint and the first loose joint nut;

the first sealing gasket is positioned in the first loose joint nut and is abutted between the one-way valve and the three-way pipe.

Further, the second detachable connecting structure comprises a second male thread and a second female thread matched with the second male thread;

one of the second male thread and the second female thread is provided at a free end portion of the circulation flow passage, and the other is provided at an outlet of the check valve.

Furthermore, a second loose joint nut and a second external thread joint are arranged between the one-way valve and the three-way pipe;

the second loose joint nut is arranged on the one-way valve, and the second external thread joint is arranged on the three-way pipe;

the second female thread is arranged on the second loose joint nut, and the second male thread is arranged on the second external thread connector.

Further, a second sealing gasket is arranged between the second external thread joint and the second loose joint nut;

the second sealing gasket is positioned in the second loose joint nut and is abutted between the one-way valve and the three-way pipe.

In a second aspect, the zero-cold-water supply system provided by the utility model comprises a gas water heater, a water supply pipeline and the return valve;

the water supply pipeline is communicated with the gas water heater;

the water return valve is arranged on the water supply pipeline.

Furthermore, a water return port of the gas water heater is provided with a plug;

one three-way pipe of the water return valve is communicated with a water outlet of the gas water heater, the other three-way pipe of the water return valve is communicated with a water inlet of the gas water heater, and the one-way valve is connected between the two three-way pipes.

Further, the water supply pipeline comprises a water return pipe;

and the one-way valve of the water return valve is connected between the water return pipe and the water return port of the gas water heater.

Compared with the prior art, the utility model provides a return water valve's beneficial effect does:

in this application, the return water valve includes check valve and two three-way pipes, and the check valve can be dismantled connection structure and the second through first and can be dismantled connection structure and be connected with two three-way pipes respectively. When the water return device is applied specifically, if a user does not reserve a water return pipeline, a whole set of water return valves consisting of the one-way valves and the three-way pipes can be arranged in the water supply pipeline to form a water return waterway; if a water return pipeline is reserved for a user, the one-way valve can be detached from the two three-way pipes and then is independently arranged at a water return port of the gas water heater to form a water return waterway.

It can be seen from above that, this return valve's check valve can freely be dismantled, and according to the application scene of difference, check valve and three-way pipe can regard as a whole to go to use, and the check valve also can go to use alone. Compared with the prior art, when a water return pipeline is reserved in a user home, the water return valve does not need to be used in a whole set, and the one-way valve can be directly matched with a water return port of the whole machine, so that installation parts such as plugs on a three-way pipe are saved, pipeline interfaces and water pipe connection points are reduced, the water leakage risk is reduced, and the integral attractiveness and installation convenience are guaranteed.

The utility model provides a pair of zero cold water supply system's beneficial effect does:

the utility model provides a zero cold water supply system includes the wet return, from this, technical advantage and effect that this zero cold water supply system reached include technical advantage and effect that above-mentioned wet return reached equally, and here is no longer repeated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a water return valve provided in an embodiment of the present invention;

fig. 2 is an exploded view of a water return valve provided in the embodiment of the present invention;

FIG. 3 is a front view of a water return valve according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a water return valve provided in an embodiment of the present invention;

fig. 5 is a cross-sectional view of a check valve of a water return valve provided in an embodiment of the present invention;

fig. 6 is a schematic view of the water return valve according to the embodiment of the present invention applied to a zero-cold water supply system without a reserved water return pipe;

fig. 7 is a schematic view of the water return valve provided by the embodiment of the present invention when being applied to a zero-cold water supply system with a reserved water return pipe.

Icon:

100-three-way pipe; 110-a water inlet channel; 120-a circulating flow channel;

200-a one-way valve;

300-a first external thread joint; 400-a first loose joint nut; 500-a first gasket; 600-a second loose joint nut; 700-a second external thread joint; 800-a second gasket;

900-gas water heater; 910-water return port; 920-water outlet; 930-water inlet;

1000-water supply line; 1010-a water return pipe;

1100-plug.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The water return valve provided by the present embodiment, referring to fig. 1 to 7, includes a three-way pipe 100 and a check valve 200; the three-way pipe 100 is provided with a water inlet flow passage 110 and a circulating flow passage 120, and one end of the circulating flow passage 120 is communicated with the water inlet flow passage 110; the three-way pipe 100 has two, and the inlet and outlet of the check valve 200 are respectively connected with the two circulation flow channels 120; the check valve 200 is connected with the two three-way pipes 100 through a first detachable connection structure and a second detachable connection structure respectively.

Referring to fig. 1, the water return valve includes a check valve 200 and two three-way pipes 100, and the check valve 200 is connected to the two three-way pipes 100 through a first detachable connection structure and a second detachable connection structure, respectively. Referring to fig. 6 and 7, in a specific application, if a user does not reserve the water return pipe 1010, a whole set of water return valves composed of the check valve 200 and the tee pipe 100 may be disposed in the water supply pipe 1000 to form a water return water path; if a user reserves a water return pipe 1010, the one-way valve 200 can be detached from the two three-way pipes 100 and then is separately arranged at the water return port 910 of the gas water heater 900 to form a water return water path.

It can be seen from the above that the check valve 200 of this return valve can freely dismantle, and according to different application scenarios, check valve 200 and three-way pipe 100 can go to use as an organic whole, and check valve 200 also can go to use alone. Compared with the prior art, when a water return pipe 1010 is reserved in a user home, the water return valve does not need to be used in a whole set, and the one-way valve 200 can be directly matched with the whole machine water return port 910, so that installation parts such as a plug 1100 on the three-way pipe 100 are saved, pipe joints and water pipe connection points are reduced, water leakage risks are reduced, and the overall attractiveness and installation convenience are guaranteed.

In addition, referring to fig. 4, the circulation flow passage 120 is perpendicular to the water inlet flow passage 110, so that the water return valve composed of the check valve 200 and the two three-way pipes 100 is H-shaped, and referring to fig. 6, the H-shaped water return valve enables the pipes to be arranged in order, thereby ensuring the smooth flow of water.

In one embodiment of the present application, the first detachable connection structure includes a first male thread and a first female thread matching the first male thread; one of the first male thread and the first female thread is provided at an inlet of the check valve 200, and the other is provided at a free end of the circulation flow passage 120.

Specifically, the first detachable connecting structure comprises a first male thread and a first female thread, and through the matching of the first male thread and the first female thread, the threaded connection is realized between the check valve 200 and the three-way pipe 100. By adopting the design, the one-way valve 200 and the three-way pipe 100 are convenient to disassemble and assemble and are quick to operate. In addition, besides the screw connection, a flange connection can be adopted between the check valve 200 and the tee 100, and the details are not described here.

Taking the example that the first male thread is arranged on the check valve 200 and the first female thread is arranged on the three-way pipe 100, referring to fig. 2, a first external thread joint 300 and a first union nut 400 are arranged between the check valve 200 and the three-way pipe 100; the first external thread joint 300 is arranged on the one-way valve 200, and the first union nut 400 is arranged on the three-way pipe 100; the first male thread is disposed on the first external thread joint 300, and the first female thread is disposed on the first union nut 400.

Referring to fig. 1 and 2, during installation, the first external thread joint 300 is screwed into the first union nut 400, and the first external thread joint and the first union nut are fixedly connected, that is, the check valve 200 and the three-way pipe 100 are fixedly connected; during disassembly, the first external thread joint 300 is screwed out of the first loose joint nut 400, and the first loose joint nut are separated, namely, the one-way valve 200 and the three-way pipe 100 are disassembled. By adopting the design, the one-way valve 200 and the three-way pipe 100 are convenient to disassemble and assemble, and can be quickly applied to different scenes.

Further, referring to fig. 2 and 4, a first sealing gasket 500 is disposed between the first external thread joint 300 and the first union nut 400; the first gasket 500 is located in the first union nut 400 and abuts between the check valve 200 and the tee 100.

The advantage of the above arrangement is that through the first sealing gasket 500, the sealing connection between the check valve 200 and the three-way pipe 100 is realized, water leakage is avoided when in use, and the utilization rate of water is improved.

In one embodiment of the present application, the second detachable connection structure includes a second male thread and a second female thread matching the second male thread; one of the second male thread and the second female thread is provided at a free end of the circulation flow passage 120, and the other is provided at an outlet of the check valve 200.

Specifically, the second detachable connecting structure comprises a second male thread and a second female thread, and through the matching of the second male thread and the second female thread, the one-way valve 200 is in threaded connection with the other three-way pipe 100. By adopting the design, the one-way valve 200 and the three-way pipe 100 are convenient to disassemble and assemble and are quick to operate. In addition, besides the screw connection, a flange connection can be adopted between the check valve 200 and the tee 100, and the details are not described here.

For the following example, a second male thread is arranged on the three-way pipe 100, and a second female thread is arranged on the check valve 200, referring to fig. 2, a second loose joint nut 600 and a second external thread joint 700 are further arranged between the check valve 200 and the three-way pipe 100; the second loose joint nut 600 is arranged on the one-way valve 200, and the second external thread joint 700 is arranged on the three-way pipe 100; the second female thread is provided in the second union nut 600, and the second male thread is provided in the second male connector 700.

By adopting the design, the one-way valve 200 and the three-way pipe 100 are convenient to disassemble and assemble and can be quickly applied to different scenes; one of the loose joint nut and the external thread joint is positioned at the inlet of the one-way valve 200, and the other is positioned at the outlet, so that the one-way valve 200 can be suitable for different water return ports 910 of different models.

The material of the check valve 200 and the tee 100 of the present embodiment may be a heat-resistant and pressure-resistant material such as copper or plastic.

Further, referring to fig. 2 and 4, a second sealing gasket 800 is disposed between the second external thread joint 700 and the second union nut 600; the second sealing gasket 800 is positioned in the second union nut 600 and is abutted between the check valve 200 and the tee 100. By the design, water leakage in application is avoided, and the utilization rate of water is improved.

Referring to fig. 6 and 7, the zero-cold-water supply system provided by the present embodiment includes a gas water heater 900, a water supply line 1000, and a water return valve; the water supply pipeline 1000 is communicated with the gas water heater 900; the return valve is disposed on the water supply pipeline 1000, so that the whole water supply system has a zero-cold-water function.

Referring to fig. 6, a water return port 910 of the gas water heater 900 is provided with a plug 1100; one of the three-way pipes 100 of the water return valve is communicated with the water outlet 920 of the gas water heater 900, the other three-way pipe 100 is communicated with the water inlet 930 of the gas water heater 900, and the one-way valve 200 is connected between the two three-way pipes 100.

With continued reference to fig. 6, the user does not reserve the water return pipe 1010 at home, and at this time, the cold water pipeline is used as the water return pipe 1010, and at the remote water consumption point, the water return valve is connected between the cold water pipeline and the hot water pipeline, so that the water outlet 920 and the water inlet 930 form a loop from the water consumption point to the water inlet 930, thereby ensuring instant heating.

Referring to fig. 7, the water supply line 1000 includes a return pipe 1010; the check valve 200 of the return valve is connected between the return pipe 1010 and the return port 910 of the gas water heater 900.

With continued reference to fig. 7, the user reserves a water return pipe 1010, at this time, the check valve 200 on the water return valve can be detached, and the union nut of the check valve 200 is connected and fixed with the water return port 910 in a threaded manner.

The zero cold water supply system that this embodiment provided includes the return valve, and from this, the technical advantage and the effect that this zero cold water supply system reaches include technical advantage and the effect that above-mentioned return valve reaches equally, and this no longer gives details here.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made on the technical solutions described in the foregoing embodiments, or some or all of the technical features of the present invention may be replaced by other technical features of the present invention without departing from the scope of the technical solutions of the present invention.

Claims (10)

1. A water return valve, comprising: a three-way pipe (100) and a one-way valve (200);

the three-way pipe (100) is provided with a water inlet flow channel (110) and a circulating flow channel (120), and one end of the circulating flow channel (120) is communicated with the water inlet flow channel (110);

the three-way pipe (100) is provided with two, and the inlet and the outlet of the one-way valve (200) are respectively connected with the two circulating flow channels (120);

the check valve (200) is connected with the two three-way pipes (100) through a first detachable connecting structure and a second detachable connecting structure respectively.

2. The water return valve according to claim 1, wherein the first detachable connection structure comprises a first male thread and a first female thread matching the first male thread;

one of the first male thread and the first female thread is provided at an inlet of the check valve (200), and the other is provided at a free end of the circulation flow passage (120).

3. The water return valve according to claim 2, characterized in that a first external thread joint (300) and a first union nut (400) are arranged between the one-way valve (200) and the three-way pipe (100);

the first external thread joint (300) is arranged on the one-way valve (200), and the first loose joint nut (400) is arranged on the three-way pipe (100);

the first male thread is arranged on the first outer thread joint (300), and the first female thread is arranged on the first loose joint nut (400).

4. The water return valve according to claim 3, characterized in that a first sealing gasket (500) is arranged between the first external thread joint (300) and the first loose joint nut (400);

the first sealing gasket (500) is positioned in the first loose joint nut (400) and abutted between the one-way valve (200) and the three-way pipe (100).

5. The water return valve of claim 3 wherein said second removable connection includes a second male thread and a second female thread that mates with said second male thread;

one of the second male thread and the second female thread is provided at a free end of the circulation flow passage (120), and the other is provided at an outlet of the check valve (200).

6. The water return valve according to claim 5, characterized in that a second loose joint nut (600) and a second external thread joint (700) are further arranged between the one-way valve (200) and the three-way pipe (100);

the second loose joint nut (600) is arranged on the one-way valve (200), and the second external thread joint (700) is arranged on the three-way pipe (100);

the second female thread is arranged on the second loose joint nut (600), and the second male thread is arranged on the second outer thread joint (700).

7. The water return valve according to claim 6, characterized in that a second sealing gasket (800) is arranged between the second outer thread joint (700) and the second union nut (600);

the second sealing gasket (800) is positioned in the second loose joint nut (600) and abutted between the one-way valve (200) and the three-way pipe (100).

8. A zero cold water supply system, characterized by comprising a gas water heater (900), a water supply line (1000) and a water return valve according to any one of claims 1-7;

the water supply pipeline (1000) is communicated with the gas water heater (900);

the water return valve is arranged on the water supply pipeline (1000).

9. The zero-cold water supply system according to claim 8, wherein the water return port (910) of the gas water heater (900) is provided with a plug (1100);

one tee pipe (100) of the water return valve is communicated with a water outlet (920) of the gas water heater (900), the other tee pipe (100) of the water return valve is communicated with a water inlet (930) of the gas water heater (900), and the check valve (200) is connected between the two tee pipes (100).

10. A zero cold water supply system according to claim 8, wherein said water supply line (1000) comprises a return pipe (1010);

and a one-way valve (200) of the water return valve is connected between the water return pipe (1010) and a water return port (910) of the gas water heater (900).

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