Connecting structure of water inlet electromagnetic valve of water purifier

Abstract

The utility model relates to a connecting structure of a water inlet electromagnetic valve of a water purifier, which comprises a base of the water inlet electromagnetic valve, the base comprises a water inlet pipe, and the connecting structure is characterized by further comprising a limit ring and a screw cap used for being in threaded connection with an angle valve, the rear end part of the screw cap extends from the periphery of the screw cap to the direction of the center line of the screw cap to form a circle of flange; a penetrating hole is formed in the center of the flange, the front end of the water inlet pipe penetrates through the penetrating hole to extend into the nut, the limiting ring is located in the nut and arranged on the water inlet pipe in a sleeving mode, the wall face, facing the interior of the nut, of the flange is called as a first wall face, the wall face, back to the interior of the nut, of the flange is called as a second wall face, and the limiting ring can abut against the first wall face of the flange. According to the angle valve, the nut and the limiting ring are arranged, the nut can be in threaded connection with the angle valve, the water inlet pipe of the water inlet electromagnetic valve is inserted into the nut, the limiting ring in the nut is fixedly arranged on the water inlet pipe in a sleeving mode, and the limiting ring can abut against the first wall face of the flange so that the nut can be prevented from being disengaged from the water inlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a connection structure of a water inlet solenoid valve of a water purifier. Background Art

[0002] The water inlet solenoid valve of the water purifier is a component installed on the angle valve under the kitchen. It is the water diversion component of the water system of the water purifier. Its function is to draw water from the household water pipe and supply it to the water purifier. It is usually connected to the water outlet of the angle valve of the household water circuit by a thread, as shown in the "Intelligent Control System for Tap Water, Pure Water and Ice Water" disclosed in the Chinese utility model patent with patent application number CN201520535591.2 (publication number CN204959878U), which includes an angle valve, a water inlet solenoid valve, and a first three-way valve arranged in sequence along the tap water cold water inlet direction, and the water is diverted through the first three-way valve.

[0003] The water inlet solenoid valve of the water purifier has the function of controlling the on-and-off of the water circuit. It is controlled by the main signal of the water purifier and can protect the internal water circuit of the water purifier. When the water purifier is not making water, the water inlet solenoid valve is closed to protect the internal pipeline of the water purifier from the impact of water pressure changes in the municipal water supply network, and can prevent water leakage. The connection reliability of the water inlet solenoid valve and the angle valve is directly related to the guarantee of household water safety. Once the connection structure between the water purifier inlet solenoid valve and the angle valve falls off, the family will have a water soaking accident, so the connection structure between the water inlet solenoid valve and the angle valve is crucial. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a connection structure of a water inlet solenoid valve of a water purifier in which the water inlet solenoid valve and the angle valve are firmly connected in view of the current status of the prior art.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a connection structure of a water inlet solenoid valve of a water purifier, including a base of the water inlet solenoid valve, the base including a water inlet pipe, characterized in that it also includes a limit ring and a nut for threaded connection with the angle valve, the rear end of the nut extends from its circumference toward its center line to form a circle of flange, a through hole is formed in the central part of the flange, the front end of the water inlet pipe passes through the through hole and extends into the interior of the nut, the limit ring is located inside the nut and is sleeved on the water inlet pipe, the wall surface of the flange facing the interior of the nut is called the first wall surface, and the wall surface of the flange facing away from the interior of the nut is called the second wall surface, and the limit ring can be offset against the first wall surface of the flange.

[0006] In order to prevent the limiting ring from axially moving relative to the water inlet pipe, a circle of embedding grooves is provided on the outer peripheral wall of the water inlet pipe, and the limiting ring is partially embedded in the embedding groove, which plays a role in limiting the movement of the limiting ring in the axial direction.

[0007] In order to facilitate the water inlet pipe to pass through the limiting ring, the limiting ring is in an unclosed ring shape, so that the limiting ring has a certain deformation ability in the radial direction, which is convenient for being sleeved on the water inlet pipe.

[0008] In order to further facilitate the deformation of the limiting ring in the radial direction, the limiting ring is provided with a groove along the middle part of its circumference, and the groove is located on the outer peripheral wall of the limiting ring.

[0009] Preferably, the rear edge of the inner ring wall of the limiting ring is a first inclined surface, and the first inclined surface is inclined from back to front toward the center line of the limiting ring. In this way, when the limiting ring is installed on the water inlet pipe, the first inclined surface can play a guiding role, which is convenient for installation.

[0010] In order to ensure that the limiting ring is firmly mounted on the water inlet pipe, a limiting portion is formed on the inner wall of the nut along its circumference. When the limiting ring and the first wall surface of the flange are in contact with each other, the limiting portion and the outer wall of the limiting ring are in contact with each other. At this time, the limiting portion restricts the limiting ring in radial direction, so that the limiting ring cannot expand in radial direction and will not fall off the water inlet pipe.

[0011] Preferably, the front edge of the limiting portion is a second inclined surface inclined from front to back toward the center line of the nut, and the second inclined surface guides the nut when it returns to its original position to facilitate movement.

[0012] In order to prevent the nut from moving backward relative to the water inlet pipe, a vertically extending limiting wall is formed on the peripheral wall of the water inlet pipe, and a clamping ring is sleeved on the water inlet pipe. When the limiting ring abuts against the first wall of the flange, the clamping ring is squeezed between the limiting wall and the second wall of the flange. The clamping ring plays a role in limiting the backward movement of the nut, and the clamping ring and the limiting ring cooperate to limit the axial movement of the nut.

[0013] In order to facilitate the mounting of the clamping ring on the water inlet pipe, the clamping ring is in an unclosed ring shape, and both end walls of the clamping ring are arc-shaped structures arched toward each other.

[0014] In order to prevent mud and sand from entering the water inlet pipe, a filter screen is installed at the front end of the water inlet pipe, and the filter screen can filter the mud and sand.

[0015] In order to position the filter, the filter is installed on a positioning ring. A convex rib is provided on the outer peripheral wall of the positioning ring. The convex rib can be embedded in the thread groove of the nut to prevent the positioning ring from axially moving relative to the nut. The positioning ring can be a flexible part.

[0016] Preferably, when the rib on the positioning ring is embedded in the thread groove of the nut, the rear part of the positioning ring is sleeved on the water inlet pipe, and the rear wall of the positioning ring abuts against the front wall of the limiting ring. In this way, the positioning ring can also play a role in positioning the limiting ring.

[0017] Preferably, the central hole of the positioning ring is a stepped hole, which is a large hole and a small hole from front to back, the aperture of the large hole is larger than the aperture of the small hole, the filter screen includes a mounting ring and a mesh, the mounting ring includes an annular body and a limit plate extending radially outward from the front end of the annular body, the annular body is inserted in the small hole, the limit plate is inserted in the large hole, and the mesh is installed in the central part of the large hole. The mounting ring can be made of metal to prevent the positioning ring from deforming.

[0018] Compared with the prior art, the utility model has the following advantages: the utility model provides a nut and a limit ring, the nut can be threadedly connected to the angle valve, and the water inlet pipe of the water inlet solenoid valve is inserted in the nut, the limit ring in the nut is fixedly sleeved on the water inlet pipe, and the limit ring can abut against the first wall surface of the flange to prevent the nut from falling off the water inlet pipe, so that the water inlet solenoid valve and the angle valve are firmly connected, and the connection structure of the water inlet solenoid valve of the utility model involves fewer components and a streamlined structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A cross-sectional view of

[0021] Figure 3 for Figure 2 A magnified image of point A;

[0022] Figure 4 for Figure 3 A schematic diagram of the structure of the nut in FIG.

[0023] Figure 5 for Figure 3 A schematic diagram of the structure of the positioning ring;

[0024] Figure 6 for Figure 3 A schematic diagram of the structure of the limit ring in FIG.

[0025] Figure 7 for Figure 3 A schematic diagram of the structure of the snap ring;

[0026] Figure 8 for Figure 3 A schematic diagram of the structure of the filter screen;

[0027] Fig. 9 for Figure 3 Schematic diagram of the structure of the base. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] like Figures 1 to 9 As shown, the connection structure of the water inlet solenoid valve of the water purifier of this preferred embodiment includes a base 1 of the water inlet solenoid valve, a nut 2, a limiting ring 3, a clamping ring 4 and a filter screen 5.

[0030] like Figure 3 As shown, the base 1 includes a water inlet pipe 11, and the nut 2 is used to connect the angle valve and the water inlet pipe 11. The nut is threadedly connected to the angle valve. The rear end of the nut 2 extends from its circumference toward its center line to form a circle of flange 21. A through hole 22 is formed in the central part of the flange 21. The front end of the water inlet pipe 11 passes through the through hole 22 and extends into the interior of the nut 2. The limiting ring 3 is located inside the nut 2 and is sleeved on the water inlet pipe 11.

[0031] A circle of embedding groove 12 is provided on the outer peripheral wall of the water inlet pipe 11, and the limiting ring 3 is partially embedded in the embedding groove 12. The embedding groove 12 plays a role in limiting the movement of the limiting ring 3 in the axial direction.

[0032] In this embodiment, Figure 3 , 6 As shown, the limiting ring 3 is in an unclosed ring shape, so that the limiting ring 3 has a certain deformation ability in the radial direction, which is convenient for being mounted on the water inlet pipe 11, and the limiting ring 3 is provided with a groove 31 along the middle of its circumference, and the groove 31 is located on the outer peripheral wall of the limiting ring 3, which further facilitates the deformation of the limiting ring 3 in the radial direction. The rear edge of the inner ring wall of the limiting ring 3 is a first inclined surface 32, and the first inclined surface 32 is inclined from the back to the front toward the center line of the limiting ring 3. In this way, when the limiting ring 3 is installed on the water inlet pipe 11, the first inclined surface 32 can play a guiding role, which is convenient for installation.

[0033] The wall surface of the flange 21 facing the interior of the nut 2 is called a first wall surface, and the wall surface of the flange 21 facing away from the interior of the nut 2 is called a second wall surface. The limiting ring 3 can abut against the first wall surface of the flange 21.

[0034] A vertically extending limiting wall 13 is formed on the peripheral wall of the water inlet pipe 11, and a clamping ring 4 is sleeved on the water inlet pipe 11. When the limiting ring 3 abuts against the first wall surface of the flange 21, the clamping ring 4 is squeezed between the limiting wall 13 and the second wall surface of the flange 21. The clamping ring 4 plays a role in limiting the backward movement of the nut 2. The clamping ring 4 and the limiting ring 3 cooperate together to limit the axial movement of the nut 2.

[0035] In order to facilitate the clamping ring 4 to be sleeved on the water inlet pipe 11, Figure 7 As shown, the clamp ring 4 is in an unclosed ring shape, and the two end walls of the clamp ring 4 are arc-shaped structures 41 that arch toward each other. A buckle ring 42 is provided on the peripheral wall of the clamp ring 4 for the user's finger to buckle in.

[0036] A circle of limiting parts 23 are formed on the inner wall of the nut 2 along its circumference. When the limiting ring 3 abuts against the first wall surface of the flange 21, the limiting part 23 abuts against the outer wall of the limiting ring 3. At this time, the limiting part 23 restricts the limiting ring 3 in the radial direction, so that the limiting ring 3 cannot expand in the radial direction and will not fall off the water inlet pipe 11.

[0037] The front edge of the limiting portion 23 is a second inclined surface 24 which is inclined from front to back toward the center line of the nut 2. The second inclined surface 24 guides the nut 2 when it returns to its original position, so as to facilitate its movement.

[0038] like Figure 3 , 5 As shown in FIG. 8 , a filter screen 5 is installed at the front end of the water inlet pipe 11, and the filter screen 5 can filter mud and sand. The filter screen 5 is installed on the positioning ring 6, and a convex rib 61 is provided on the outer peripheral wall of the positioning ring 6. The convex rib 61 can be embedded in the thread groove 20 of the nut 2 to prevent the positioning ring 6 from axially moving relative to the nut 2. The positioning ring 6 can be a flexible member.

[0039] When the rib 61 on the positioning ring 6 is embedded in the thread groove 20 of the nut 2, the rear part of the positioning ring 6 is sleeved on the water inlet pipe 11, and the rear wall of the positioning ring 6 abuts against the front wall of the limiting ring 3. In this way, the positioning ring 6 can also play a role in positioning the limiting ring 3.

[0040] In this embodiment, the central hole of the positioning ring 6 is a stepped hole, which is a large hole 62 and a small hole 63 from front to back, the aperture of the large hole 62 is larger than the aperture of the small hole 63, the filter screen 5 includes a mounting ring 51 and a mesh 52, the mounting ring 51 includes an annular body 511 and a limit plate 512 extending radially outward from the front end of the annular body 511, the annular body 511 is inserted in the small hole 63, the limit plate 512 is inserted in the large hole 62, and the mesh 52 is installed in the central part of the large hole 62. The mounting ring 51 can be made of metal to prevent the positioning ring 6 from deformation.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A connection structure of a water inlet solenoid valve of a water purifier, comprising a base (1) of the water inlet solenoid valve, wherein the base (1) comprises a water inlet pipe (11), characterized in that: It also includes a limiting ring (3) and a nut (2) for threaded connection with the angle valve, the rear end of the nut (2) extending from its circumference to its center line to form a circle of flange (21), the central part of the flange (21) forms a through hole (22), the front end of the water inlet pipe (11) passes through the through hole (22) and extends into the interior of the nut (2), the limiting ring (3) is located inside the nut (2) and is sleeved on the water inlet pipe (11), the wall surface of the flange (21) facing the interior of the nut (2) is called the first wall surface, and the wall surface of the flange (21) facing away from the interior of the nut (2) is called the second wall surface, and the limiting ring (3) can be abutted against the first wall surface of the flange (21).

2. The connection structure according to claim 1, characterized in that: A circle of embedding groove (12) is provided on the outer peripheral wall of the water inlet pipe (11), and the limiting ring (3) is partially embedded in the embedding groove (12).

3. The connection structure according to claim 1, characterized in that: The limiting ring (3) is in the shape of an unclosed ring.

4. The connection structure according to claim 3, characterized in that: The limiting ring (3) is provided with a groove (31) along the middle part of its circumference, and the groove (31) is located on the outer peripheral wall of the limiting ring (3).

5. The connection structure according to claim 1, characterized in that: The rear edge of the inner ring wall of the limiting ring (3) is in the form of a first inclined surface (32), and the first inclined surface (32) is inclined from the rear to the front toward the center line of the limiting ring (3).

6. The connection structure according to claim 1, characterized in that: A circle of limiting parts (23) is formed on the inner peripheral wall of the nut (2) along its circumference, and when the limiting ring (3) and the first wall surface of the flange (21) are in contact with each other, the limiting part (23) and the outer peripheral wall of the limiting ring (3) are in contact with each other.

7. The connection structure according to claim 6, characterized in that: The front edge of the limiting portion (23) is a second inclined surface (24) which is inclined from front to back towards the center line of the nut (2).

8. The connection structure according to claim 1, characterized in that: A vertically extending limiting wall (13) is formed on the peripheral wall of the water inlet pipe (11), and a clamping ring (4) is sleeved on the water inlet pipe (11). When the limiting ring (3) abuts against the first wall surface of the flange (21), the clamping ring (4) is squeezed between the limiting wall (13) and the second wall surface of the flange (21).

9. The connection structure according to claim 8, characterized in that: The clamping ring (4) is in the form of an unclosed ring, and both end walls of the clamping ring (4) are arc-shaped structures (41) that arch toward each other.

10. The connection structure according to any one of claims 1 to 9, characterized in that: A filter screen (5) is installed at the front end of the water inlet pipe (11).

11. The connection structure according to claim 10, characterized in that: The filter screen (5) is mounted on a positioning ring (6). A convex rib (61) is provided on the outer peripheral wall of the positioning ring (6). The convex rib (61) can be embedded in the thread groove (20) of the nut (2).

12. The connection structure according to claim 11, characterized in that: When the convex rib (61) on the positioning ring (6) is embedded in the thread groove (20) of the nut (2), the rear part of the positioning ring (6) is sleeved on the water inlet pipe (11), and the rear wall surface of the positioning ring (6) abuts against the front wall surface of the limiting ring (3).

13. The connection structure according to claim 11, characterized in that: The central hole of the positioning ring (6) is a stepped hole, which is a large hole (62) and a small hole (63) from front to back, the aperture of the large hole (62) is larger than the aperture of the small hole (63), the filter screen (5) comprises a mounting ring (51) and a mesh (52), the mounting ring (51) comprises an annular body (511) and a limiting plate (512) extending radially outward from the front end of the annular body (511), the annular body (511) is inserted into the small hole (63), the limiting plate (512) is inserted into the large hole (62), and the mesh (52) is installed in the central part of the large hole (62).

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