CN212718523U

CN212718523U - Water return valve assembly

Info

Publication number: CN212718523U
Application number: CN202021010730.7U
Authority: CN
Inventors: 卢宇凡; 陈军
Original assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Current assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-03-16
Anticipated expiration: 2030-06-04

Abstract

The utility model discloses a return water valve assembly, include: the water inlet pipe is arranged at the left end of the water inlet pipe, a first-stage sinking platform is arranged at the left end of the water inlet pipe, and a one-way valve is arranged in the first-stage sinking platform; the return water nozzle is provided with a return water channel in the return water nozzle, the return water nozzle is provided with a blocking portion, the right end of the blocking portion is arranged at the outlet of the return water channel, the blocking portion is arranged on the left side of the one-way valve, the return water channel is communicated with the water flow channel through the one-way valve, and the return water nozzle is detachably connected with the shell. The one-way valve is arranged in the first-stage sinking platform and the blocking part is arranged on the left side of the one-way valve, so that the movement of the one-way valve is limited, the one-way valve is fixed in the first-stage sinking platform, and the problem of diversion failure caused by displacement of the one-way valve is solved.

Description

Water return valve assembly

Technical Field

The utility model relates to the technical field of valves, in particular to return valve subassembly.

Background

The zero-cold water type water heater is generally internally provided with a water return valve component for guiding municipal water supply and circulating return water. At present, a water return valve is mostly realized by a copper shell and a built-in one-way valve, and the fixing mode of the built-in one-way valve is usually positioned by a clamp spring, namely, the one-way valve is firstly installed in the copper shell and then the clamp spring is riveted, so that the one-way valve is prevented from falling off; however, the clamp spring is easily deformed and falls off from the shell due to the action force of the one-way valve, and the one-way valve is displaced along with the deformation, so that the diversion of the water return valve is disabled.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a return water valve assembly.

According to the utility model discloses return valve subassembly, include: the water inlet pipe comprises a shell, wherein a water flow channel is arranged in the shell, the shell is provided with a water inlet pipe which is transversely arranged, the left end of the water inlet pipe is an inlet of the water flow channel, the left end of the water inlet pipe is provided with a primary sinking platform, and a check valve is arranged in the primary sinking platform; the water return nozzle is provided with a water return channel, the water return nozzle is provided with a blocking portion, the outlet of the water return channel is arranged at the right end of the blocking portion, the blocking portion is arranged on the left side of the one-way valve, the water return channel is communicated with the water flow channel through the one-way valve, and the water return nozzle is detachably connected with the shell.

According to the utility model discloses return water valve assembly has following technological effect at least: the one-way valve is arranged in the first-stage sinking platform and the blocking part is arranged on the left side of the one-way valve, so that the movement of the one-way valve is limited, the one-way valve is fixed in the first-stage sinking platform, and the problem of diversion failure caused by displacement of the one-way valve is solved.

According to some embodiments of the utility model, the barrier part is the tubulose of horizontal setting, the internal diameter of barrier part is less than the internal diameter of the heavy platform of one-level.

According to some embodiments of the invention, the housing is three-way, the housing has three interfaces, one of which the interface is the inlet of the water flow channel.

According to some embodiments of the invention, the housing is made of plastic.

According to the utility model discloses a some embodiments, the stop part with be equipped with the retaining ring between the check valve, the retaining ring is made by elastic material, the periphery of retaining ring with the inner wall interference fit of inlet tube.

According to other embodiments of the present invention, a first boss is disposed at the right end of the blocking portion, and an outlet of the return water passage is disposed in the first boss; the first boss is arranged in the primary sinking platform, the check valve is arranged between the check valve and the first boss, and the first boss is abutted to the check ring.

According to some embodiments of the present invention, a first boss is provided at the right end of the blocking portion, and an outlet of the return water passage is provided in the first boss; the left end of the primary sinking platform is provided with a secondary sinking platform, the first boss is arranged in the secondary sinking platform, and the outer diameter of the first boss is larger than the inner diameter of the primary sinking platform; the check ring is arranged in the secondary sinking platform, the check ring is arranged between the one-way valve and the first boss, and the first boss is abutted to the check ring.

According to some embodiments of the utility model, the check valve with be equipped with the sealing washer between the inner wall of one-level heavy platform.

According to the utility model discloses a some embodiments, the outside cover of inlet tube is equipped with first ring flange, the outside cover of stop part is equipped with the second ring flange, first ring flange with the second ring flange passes through bolted connection.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a return valve assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an exploded view of the return valve assembly according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a return valve assembly according to further embodiments of the present invention;

fig. 5 is an enlarged schematic view of a portion B in fig. 4.

Reference numerals:

the water return device comprises a shell 100, a water inlet pipe 110, a primary sinking platform 111, a secondary sinking platform 112, a first flange plate 120, a water flow channel 150, a water return nozzle 200, a blocking part 210, a first boss 211, a second flange plate 220, a water return channel 250, a one-way valve 300, a sealing ring 310 and a retaining ring 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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. The terms "a" or "an" mean one or more, the terms "a" or "an" mean two or more, the terms larger than, smaller than, exceeding, and the like are understood to include the number, and the terms "larger than, smaller than, within, and the like are understood to include the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

A return valve assembly according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

According to the utility model discloses return valve subassembly, include: the water return device comprises a shell 100 and a water return nozzle 200, wherein a water flow channel 150 is arranged in the shell 100, the shell 100 is provided with a water inlet pipe 110 which is transversely arranged, the left end of the water inlet pipe 110 is an inlet of the water flow channel 150, the left end of the water inlet pipe 110 is provided with a primary sinking platform 111, and a one-way valve 300 is arranged in the primary sinking platform 111; the water return nozzle 200 is internally provided with a water return channel 250, the water return nozzle 200 is provided with a blocking part 210, the outlet of the water return channel 250 is arranged at the right end of the blocking part 210, the blocking part 210 is arranged at the left side of the one-way valve 300, the water return channel 250 is communicated with the water flow channel 150 through the one-way valve 300, and the water return nozzle 200 is detachably connected with the shell 100.

For example, as shown in fig. 1 to 3, the housing 100 is in a three-way shape, of the three ports of the housing 100, the port located on the left side is an inlet of the water flow channel 150 and is connected with the water return nozzle 200, the port located on the upper side is an outlet of the water flow channel 150 and is connected with a water inlet end of a water heater, and the port located on the right side is connected with municipal water supply; the check valve 300 conducts water flow flowing from left to right and stops water flow flowing from right to left, when backflow is not needed, as the right side of the check valve 300 is connected with municipal water supply, the check valve 300 is forced to left, so that the check valve 300 has a tendency of moving to left, and the blocking part 210 supports against the check valve 300 from left to right, so that the check valve 300 cannot move to left and leaves the position of the primary sinking platform 111; the water return nozzle 200 can be made of copper alloy, plastic or other materials; the conventional housing 100 is made of copper alloy, and the housing 100 may be made of plastic for reducing the cost.

The one-way valve 300 is arranged in the primary sinking platform 111, and the blocking part 210 is arranged on the left side of the one-way valve 300, so that the movement of the one-way valve 300 is limited, the one-way valve 300 is fixed in the primary sinking platform 111, and the problem of flow guide failure caused by the displacement of the one-way valve 300 is solved; meanwhile, when the check valve 300 is damaged, the water nozzle 200 and the shell 100 can be disassembled, the check valve 300 can be replaced, in addition, an inner hole groove does not need to be machined for fixing the position of the clamp spring, the strength of the clamp spring does not need to be designed independently aiming at the conditions that the flow is different and the size of the check valve 300 is different, and the difficulty of production and manufacturing is reduced.

In some embodiments of the present invention, the blocking portion 210 is a transversely disposed tube, and the inner diameter of the blocking portion 210 is smaller than the inner diameter of the first-stage sinking platform 111. The primary sinking platform 111 can be processed according to the size of the one-way valve 300 or the one-way valve 300 can be selected according to the size of the primary sinking platform 111, so that the one-way valve 300 can be just placed in the primary sinking platform 111, and the periphery of the blocking part 210 can abut against the periphery of the one-way valve 300 by setting the inner diameter of the blocking part 210 to be smaller than the inner diameter of the primary sinking platform 111, so that a larger flow area is reserved; the inner diameter of the blocking part 210 can also be larger than that of the primary sinking platform 111, and then a separation net or other separation parts are arranged at the right end of the blocking part 210 to prevent the one-way valve 300 from moving leftwards; the blocking portion 210 may be formed in a square tube shape or other shapes to abut against the check valve 300 from left to right.

In some embodiments of the present invention, a retainer ring 400 is disposed between the blocking portion 210 and the check valve 300, the retainer ring 400 is made of an elastic material, and the periphery of the retainer ring 400 is in interference fit with the inner wall of the water inlet pipe 110. The check ring 400 can be made of rubber, during assembly, the check valve 300 is placed into the first-level sinking platform 111, the check valve 300 is pre-fixed by the check ring 400, and then the water return nozzle 200 is assembled in a final assembly workshop, so that the process is reasonably arranged, and mass production and assembly are facilitated.

In some embodiments of the present invention, the right end of the blocking portion 210 is provided with a first boss 211, and the outlet of the water return channel 250 is disposed in the first boss 211; the left end of the primary sinking platform 111 is provided with a secondary sinking platform 112, a first boss 211 is arranged in the secondary sinking platform 112, and the outer diameter of the first boss 211 is larger than the inner diameter of the primary sinking platform 111; the retainer ring 400 is arranged in the secondary sinking platform 112, the retainer ring 400 is arranged between the check valve 300 and the first boss 211, and the first boss 211 is abutted against the retainer ring 400. Therefore, the retainer ring 400 can be tightly abutted to the right end of the primary sinking platform 111 by the first boss 211, and the retainer ring 400 also plays a role in sealing to prevent water in the water return channel 250 from overflowing into the secondary sinking platform 112 and then flowing out; meanwhile, the check valve 300 does not need to bear the pressure applied by the first boss 211, and the first boss 211 is prevented from being squeezed to damage the check valve 300.

In some embodiments of the present invention, a sealing ring 310 is disposed between the check valve 300 and the inner wall of the primary sinking platform 111. This can prevent the water in the return water passage 250 from passing through the gap between the check valve 300 and the inner wall of the first boss 211, not through the check valve 300; because the sealing ring 310 is arranged between the check valve 300 and the inner wall of the primary sinking platform 111, the transverse dimension of the primary sinking platform 111 can be arranged to be slightly larger than that of the check valve 300, and the check ring 400 does not need to tightly abut against the check valve 300, so that the check valve 300 is prevented from being extruded and damaged.

In some embodiments of the present invention, the outer side of the water inlet pipe 110 is sleeved with the first flange 120, the outer side of the blocking portion 210 is sleeved with the second flange 220, and the first flange 120 and the second flange 220 are connected by bolts. The first flange 120 and the shell can be integrally formed components and are formed by injection molding, and the second flange 220 and the return water nozzle 200 can be integrally formed components and are formed by casting copper alloy; the left end surface of the water inlet pipe 110 and the left end surface of the first flange plate 120 can be arranged on the same plane, the right end surface of the blocking part 210 and the right end surface of the second flange plate 220 are arranged on the same plane, and when the first flange plate 120 and the second flange plate 220 are connected together, the blocking part 210 just props against the one-way valve 300; a boss can be arranged at the right end of the blocking part 210 and extends into the water inlet pipe 110, so that the water return nozzle 200 can be accurately positioned when being assembled; except through setting up flange dish bolted connection, return water nozzle 200 still can be connected through other releasable connection structure with casing 100, if stop portion 210 outside sets up the external screw thread, inlet tube 110 is inboard sets up the internal thread, stop portion 210 in the direct threaded connection of inlet tube 110, again if return water nozzle 200 passes through buckle connection etc. with casing 100.

In other embodiments of the present invention, as shown in fig. 4 and 5, the difference from the above embodiments is that the right end of the blocking portion 210 is provided with a first boss 211, and the outlet of the water return channel 250 is provided in the first boss 211; the first boss 211 is arranged in the first-stage sink 111, the check ring 400 is arranged between the check valve 300 and the first boss 211, and the first boss 211 is abutted against the check ring 400. Therefore, the left side and the right side of the retainer ring 400 are respectively abutted against the first boss 211 and the one-way valve 300, the secondary sinking platform 112 is not required to be arranged, and the retainer ring 400 can also play a sealing role; however, when the first flange 120 and the second flange 220 are bolted together, the first boss 211 applies pressure to the check valve 300, and if the tightening force of the bolts is too large, the check valve 300 may be damaged.

The above description is for the purpose of illustrating the preferred embodiments of the present invention, but the present invention is not limited to the illustrated embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope of the present invention defined by the appended claims.

Claims

1. A water return valve assembly, comprising:

the water inlet pipe comprises a shell, wherein a water flow channel is arranged in the shell, the shell is provided with a water inlet pipe which is transversely arranged, the left end of the water inlet pipe is an inlet of the water flow channel, the left end of the water inlet pipe is provided with a primary sinking platform, and a check valve is arranged in the primary sinking platform;

the water return nozzle is provided with a water return channel, the water return nozzle is provided with a blocking portion, the outlet of the water return channel is arranged at the right end of the blocking portion, the blocking portion is arranged on the left side of the one-way valve, the water return channel is communicated with the water flow channel through the one-way valve, and the water return nozzle is detachably connected with the shell.

2. The water return valve assembly of claim 1 wherein: the blocking part is in a transversely arranged tubular shape, and the inner diameter of the blocking part is smaller than that of the primary sinking platform.

3. The water return valve assembly of claim 1 wherein: the shell is in a three-way shape and is provided with three interfaces, wherein one interface is an inlet of the water flow channel.

4. The water return valve assembly of claim 1 wherein: the shell is made of plastic materials.

5. The water return valve assembly of claim 1 wherein: and a check ring is arranged between the blocking part and the one-way valve and is made of elastic material, and the periphery of the check ring is in interference fit with the inner wall of the water inlet pipe.

6. The return water valve assembly of claim 5, wherein: a first boss is arranged at the right end of the blocking part, and an outlet of the water return channel is arranged in the first boss; the first boss is arranged in the primary sinking platform, the check valve is arranged between the check valve and the first boss, and the first boss is abutted to the check ring.

7. The return water valve assembly of claim 5, wherein: a first boss is arranged at the right end of the blocking part, and an outlet of the water return channel is arranged in the first boss; the left end of the primary sinking platform is provided with a secondary sinking platform, the first boss is arranged in the secondary sinking platform, and the outer diameter of the first boss is larger than the inner diameter of the primary sinking platform; the check ring is arranged in the secondary sinking platform, the check ring is arranged between the one-way valve and the first boss, and the first boss is abutted to the check ring.

8. The return water valve assembly of claim 1 or 7, wherein: and a sealing ring is arranged between the one-way valve and the inner wall of the primary sinking platform.

9. The water return valve assembly of claim 1 wherein: the outside cover of inlet tube is equipped with first ring flange, the outside cover of stop part is equipped with the second ring flange, first ring flange with the second ring flange passes through bolted connection.