Water pipe connector structure

Abstract

The utility model discloses a water pipe connector structure which comprises a stainless steel pipe, the front end of the stainless steel pipe is connected with a circular pipe sleeve in a sealed and close-fit mode, the front end of the circular pipe sleeve is connected with a circular inner container pipe nozzle in a sealed and sleeved mode through an inner hexagonal outer tooth connecting piece, and a first sealing ring is arranged between the inner container pipe nozzle and the circular pipe sleeve. A second sealing ring is arranged between the circular pipe sleeve and the inner hexagonal and outer tooth connecting piece, a connecting sleeve is further arranged at the front end of the inner hexagonal and outer tooth connecting piece in the inner container pipe mouth, a positioning protrusion is arranged on the inner wall of the rear end of the inner container pipe mouth, and a positioning notch matched with the positioning protrusion is formed in the outer wall of the circular pipe sleeve. The positioning protrusions on the inner wall of the liner nozzle are matched with the positioning notches on the outer wall of the circular pipe sleeve, so that the effects of rotation prevention and direction positioning of the stainless steel pipe are achieved, the water outlet end of the water inlet pipe can be effectively ensured to face downwards, the water inlet end of the water outlet pipe can be effectively ensured to face upwards, and the water inlet end and the water outlet end are effectively prevented from facing reversely.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water pipe joint structure, more specifically to a joint structure of a water outlet pipe or a water inlet pipe of a water tank inner container of a water heater. BACKGROUND

[0002] The structure of the heat pump water heater mainly comprises the following core components: compressor, condenser, evaporator, throttling device and water tank assembly. The water tank assembly comprises an inner container, a water inlet pipe, a water outlet pipe and a heat exchange pipe. The inner container is provided with a heating cavity. The water inlet pipe is in communication with the bottom of the heating cavity. The water outlet pipe is in communication with the top of the heating cavity. However, the existing connection between the inner container and the water inlet pipe and the water outlet pipe has the following defects: 1. The water in the inner container flows back to the inner wall of the inner container nozzle. Since the inner container nozzle is generally made of metal material, the inner wall of the inner container nozzle rusts due to the water, thereby producing rust water, which is unhygienic and affects the service life of the water pipe; 2. When the water inlet pipe and the water outlet pipe are connected with the inner container, the water inlet pipe and the water outlet pipe cannot be positioned and rotate, which easily causes the water inlet end and the water outlet end of the water inlet pipe and the water outlet pipe to be installed in the wrong direction. SUMMARY

[0003] The utility model aims at overcoming the defects of the prior art, providing a water pipe joint structure with long service life, better hygiene, and effective guarantee of downward water outlet end of the water inlet pipe and upward water inlet end of the water outlet pipe during assembly, and effective prevention of the water inlet end and the water outlet end being installed in the wrong direction.

[0004] The utility model is realized as follows:

[0005] A water pipe joint structure comprises a stainless steel pipe, a circular pipe sleeve is tightly connected to the front end of the stainless steel pipe in a sealed manner, characterized in that a circular inner container nozzle is connected to the front end of the circular pipe sleeve in a sealed manner through a hexagonal external tooth connecting piece, a first sealing ring is arranged between the circular inner container nozzle and the circular pipe sleeve, a second sealing ring is arranged between the circular pipe sleeve and the hexagonal external tooth connecting piece, a connecting sleeve is further arranged at the front end of the hexagonal external tooth connecting piece in the circular inner container nozzle, a positioning protrusion is arranged on the rear end inner wall of the circular inner container nozzle, and a positioning notch matched with the positioning protrusion is arranged on the outer wall of the circular pipe sleeve.

[0006] The water pipe joint structure as described above is characterized in that an external thread is arranged on the outer wall of the hexagonal external tooth connecting piece, and an internal thread is arranged on the inner wall of the circular inner container nozzle.

[0007] The water pipe joint structure as described above is characterized in that an external ring is arranged on the outer wall of the connecting sleeve, and a third sealing ring and a fourth sealing ring are arranged at the front end and the rear end of the external ring on the outer wall of the connecting sleeve.

[0008] The water pipe joint structure as described above is characterized in that the circular pipe sleeve comprises a circular pipe body, the outer wall of the front end of the circular pipe body is provided with a sleeve protruding ring, the inner wall of the rear end of the inner liner pipe nozzle is provided with an inner liner pipe nozzle protruding ring, the first sealing ring is arranged between the sleeve protruding ring and the inner liner pipe nozzle protruding ring, the positioning protrusion is arranged on the inner wall of the inner liner pipe nozzle protruding ring, and the positioning notch is arranged on the outer wall of the front end of the circular pipe body.

[0009] The water pipe joint structure as described above is characterized in that the inner liner pipe nozzle and the positioning protrusion are an integral structure.

[0010] The water pipe joint structure as described above is characterized in that the inner liner pipe nozzle and the positioning protrusion are an integral structure.

[0011] The water pipe joint structure as described above is characterized in that the inner liner pipe nozzle and the positioning protrusion are an integral structure.

DRAWINGS

[0012] Figure 1 is a perspective view of the utility model;

[0013] Figure 2 is a sectional view of the utility model;

[0014] Figure 3 is a structure explosion drawing of the utility model;

[0015] Figure 4 is a structure drawing of the inner liner pipe nozzle of the utility model.

CONCRETE IMPLEMENTATION

[0016] The utility model will be further described in connection with the drawings:

[0017] The utility model provides a kind of water pipe joint structure, mainly is used for the connection of water heater inner container and outlet pipe or inlet pipe, it includes stainless steel pipe 1, stainless steel pipe 1 is elbow pipe and is used to connect in hot water inner container, the front end of stainless steel pipe 1 is sealed and tightly fitted connection has round pipe sleeve 2, the front end of round pipe sleeve 2 is sealed and connected with round inner container pipe nozzle 4 by internal hex external tooth connecting piece 3, inner container pipe nozzle 4 is used to be welded with the inner container of water heater, first sealing ring 5 is arranged between inner container pipe nozzle 4 and round pipe sleeve 2, second sealing ring 6 is arranged between round pipe sleeve 2 and internal hex external tooth connecting piece 3, internal hex external tooth connecting piece front end in inner container pipe nozzle 4 is further provided with connecting sleeve 7, the rear end inner wall of inner container pipe nozzle 4 is provided with positioning protrusion 41, the outer wall of round pipe sleeve 2 is provided with positioning notch 21 matched with positioning protrusion 41.The positioning protrusion 41 of inner wall of the inner container pipe nozzle 4 of the utility model is matched with the positioning notch 21 of the outer wall of the round pipe sleeve 2, and the direction positioning effect of anti-rotation and stainless steel pipe 1 is achieved, the water outlet end of inlet pipe can be effectively ensured to be downward, the water inlet end of outlet pipe can be effectively ensured to be upward, the inlet end and the water outlet end can be effectively prevented from being installed reversely.The first sealing ring 5 is arranged between inner container pipe nozzle 4 and round pipe sleeve 2, and the second sealing ring 6 is arranged between round pipe sleeve 2 and internal hex external tooth connecting piece 3, so that the water in the inner container can be prevented from flowing to the inner wall of the inner container pipe nozzle 4, the water in the inner container can be completely prevented from flowing to the inner wall of the inner container pipe nozzle 4, and the inner wall of the pipe nozzle can be prevented from rusting due to water, so that rust water is prevented from coming out.

[0018] The internal hex external tooth connecting piece 3 of the utility model is made of copper, and a hexagonal hole is arranged in the middle part.

[0019] The outer wall of the internal hex external tooth connecting piece 3 of the utility model is provided with external threads 31, and the inner wall of the inner container pipe nozzle 4 is provided with internal threads 42 matched with the external threads 31.

[0020] The connecting sleeve 7 of the utility model is also a cylinder, the outer ring 71 of the outer wall of the connecting sleeve 7 is provided with third sealing ring 72 and fourth sealing ring 73 at the front end and the rear end.

[0021] The connecting sleeve 7 and the outer ring 71 of the utility model are integrally injection molded by using plastic material.

[0022] The round pipe sleeve 2 of the utility model includes a round pipe body 22, the front end outer wall of the round pipe body 22 is provided with a sleeve protruding ring 23, the rear end inner wall of the inner container pipe nozzle 4 is provided with an inner container pipe nozzle protruding ring 43, the first sealing ring 5 is arranged between the sleeve protruding ring 23 and the inner container pipe nozzle protruding ring 43, the positioning protrusion 41 is arranged in the inner ring wall of the inner container pipe nozzle protruding ring 43, and the positioning notch 21 is arranged on the outer wall of the round pipe body 22.

[0023] The round pipe body 22 and the sleeve protruding ring 23 of the utility model are integrally injection molded by using plastic material.

[0024] The inner tube nozzle 4 is made of metal material, and the inner tube nozzle 4 and the positioning protrusion 41 are integrally formed by using metal material.

Claims

1. A water pipe joint structure comprising a stainless steel pipe (1), a front end of the stainless steel pipe (1) being sealingly and tightly connected with a circular pipe sleeve (2), characterized in that The front end of the circular sleeve (2) is sealed and sleeved with a circular inner tube nozzle (4) through a hexagonal external tooth connector (3), a first sealing ring (5) is arranged between the circular inner tube nozzle (4) and the circular sleeve (2), a second sealing ring (6) is arranged between the hexagonal external tooth connector (3) and the circular sleeve (2), a connecting sleeve (7) is further arranged at the front end of the hexagonal external tooth connector in the circular inner tube nozzle (4), a positioning protrusion (41) is arranged on the inner wall of the rear end of the circular inner tube nozzle (4), and a positioning notch (21) is arranged on the outer wall of the circular sleeve (2).

2. A water pipe joint structure according to claim 1, wherein An external thread (31) is arranged on the outer wall of the hexagonal external tooth connector (3), and an internal thread (42) is arranged on the inner wall of the circular inner tube nozzle (4).

3. A water pipe joint structure according to claim 1, wherein An external ring (71) is arranged on the outer wall of the connecting sleeve (7), and a third sealing ring (72) and a fourth sealing ring (73) are arranged at the front end and the rear end of the external ring (71) of the connecting sleeve (7).

4. A water pipe joint structure according to claim 1, wherein The circular sleeve (2) comprises a circular sleeve body (22), the front end of the circular sleeve body (22) is provided with a sleeve protruding ring (23), the rear end of the circular inner tube nozzle (4) is provided with an inner tube nozzle protruding ring (43), the first sealing ring (5) is arranged between the sleeve protruding ring (23) and the inner tube nozzle protruding ring (43), the positioning protrusion (41) is arranged on the inner wall of the inner tube nozzle protruding ring (43), and the positioning notch (21) is arranged on the front end of the circular sleeve body (22).

5. A water pipe joint structure according to claim 1, wherein The circular inner tube nozzle (4) and the positioning protrusion (41) are an integral structure.

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