CN212080200U - Water inlet valve not easy to loosen - Google Patents

Abstract

The utility model provides a water inlet valve which is not easy to loosen, comprising a valve body and a pilot valve. The valve body is provided with a water inlet, a water outlet and an installation interface; the water inlet and the water outlet are communicated through a flow passage, a cavity is arranged in the flow passage and communicated with the mounting interface, and internal threads are arranged on the inner wall of the mounting interface. The pilot valve comprises a valve and an installation joint; the valve is positioned in the cavity and cuts off a flow passage between the cavity and the water outlet; the outer wall of the installing joint is provided with an external thread, and the installing joint is connected with the installing interface through the external thread and the internal thread in a screwing mode. The installation joint and the installation interface are also fixedly connected in the circumferential direction through a limiting mechanism, so that the relative rotation between the valve body and the pilot valve caused by vibration in the use process of the water inlet valve is limited, the water inlet valve is prevented from leaking due to the fact that the valve body and the pilot valve are loosened, the structure is simple, and the reliability is high.

Description

Water inlet valve not easy to loosen

Technical Field

The utility model relates to a water intaking valve mechanical structure, IPC classification belongs to F16K 27/12.

Background

Generally, the valve body and the pilot valve of the water inlet valve are screwed at the interface, and the fastening effect is enhanced by other auxiliary means. The magnetic yoke is used as an electromagnetic component of the pilot valve and is often used as a supporting device fixedly connected with the valve body, for example, the technical means disclosed in the chinese utility model patent CN 203215026U-the situation that the threaded connection of the valve body and the pilot valve is loosened due to the vibration generated when the water inlet valve is used can be prevented by fixedly connecting the magnetic yoke and the valve body with the mounting screws. However, for the novel integrated water inlet valve, the electromagnetic part of the valve is wrapped by plastic package, and the magnet yoke in the plastic package layer cannot be simply and fixedly connected with the valve body through screws. Without a supporting device which is easy to use and can be fixedly connected with the valve body, the valve is easy to leak water due to the problems in use, and the reliability of the product is affected.

For terms and common general knowledge, refer to the mechanical engineering handbook, the electric engineering handbook, and the national standard GB/T21465-.

Disclosure of Invention

In order to solve the problem, the utility model provides a water intaking valve that is difficult for pine to take off, including valve body and pilot valve. The valve body is provided with a water inlet, a water outlet and an installation interface; the water inlet and the water outlet are communicated through a flow passage, a cavity is arranged in the flow passage and communicated with the mounting interface, and internal threads are arranged on the inner wall of the mounting interface. The pilot valve comprises a valve and an installation joint; the valve is positioned in the cavity and cuts off a flow passage between the cavity and the water outlet; the outer wall of the installing joint is provided with an external thread, and the installing joint is connected with the installing interface through the external thread and the internal thread in a screwing mode. The mounting joint and the mounting interface are also fixedly connected in the circumferential direction through a limiting mechanism.

One of the specific embodiments of the limiting mechanism is that the limiting mechanism comprises: the mounting joint is arranged on a limit block radially extending out of the port of the external thread, and the mounting joint is arranged on an axial gap formed in the port of the internal thread. The notch and the limiting block are adaptive in shape and size, so that when the mounting connector is screwed on the mounting interface, the limiting block axially sinks into the notch to be clamped.

Preferably, both ends of the notch protrude from the outer edge of the mounting interface.

A second embodiment of the limiting mechanism is that the limiting mechanism comprises: screws or pins; the mounting interface is arranged on a through hole arranged on a wall body with internal threads; the mounting joint is provided with a blind hole on a wall body with an external thread; the through hole and the blind hole correspond to each other after the internal thread and the external thread are completely screwed, and the mounting interface and the mounting connector are fixedly connected in the circumferential direction through screws or pins which are driven into the through hole and the blind hole.

The utility model discloses the technical means who adopts and produced beneficial effect as follows:

1. the limiting mechanism is arranged on the threads of the mounting joint and the mounting interface, so that the relative rotation between the valve body and the pilot valve caused by vibration in the using process of the water inlet valve is limited, the valve body and the pilot valve are prevented from being loosened to cause the water leakage condition of the water inlet valve, and the water inlet valve is simple in structure and high in reliability.

2. The stability that stopper and breach block are connected is further strengthened to the interference fit of breach and stopper, and the circumference fixed connection effect of erection joint and installation interface is better.

Drawings

FIG. 1 is a schematic sectional view of example 1;

FIG. 2 is a schematic perspective view of embodiment 1;

FIG. 3 is an enlarged schematic view of the snap-fit connection of the notch and the stopper in embodiment 1;

FIG. 4 is a schematic sectional view of example 2;

FIG. 5 is a schematic perspective view of embodiment 2;

FIG. 6 is a schematic sectional view of example 3;

fig. 7 is a schematic perspective view of embodiment 3.

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 accompanying 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 is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "driven" are to be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; the two components can be directly connected or indirectly connected through an intermediate medium, and can be communicated with each other inside the two components or in an interaction relationship of the two components; it can be driven directly or indirectly through an intermediate.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not being in direct contact, but rather being in contact with each other via additional features between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The present invention will be described in detail with reference to the following specific examples.

Example 1

The water inlet valve which is not easy to loosen provided by the embodiment 1 comprises a valve body 1 and a pilot valve 2.

Referring to fig. 1, 2 and 3, the valve body 1 has a water inlet 11, a water outlet 12 and a mounting interface 13. The water inlet 11 and the water outlet 12 are communicated through a flow passage, a cavity 14 is arranged in the flow passage, the cavity 14 is communicated with the mounting interface 13, and the inner wall of the mounting interface 13 is provided with internal threads 131. The pilot valve 2 comprises a valve 21 and a mounting nipple 22. The outer wall of the mounting joint 22 is provided with an external thread 221, the mounting joint 22 is screwed with the mounting interface 13 through the external thread 221 and the internal thread 131, and the valve 21 extends into the chamber 14 and closes off the communication between the chamber 14 and the water outlet 12.

The mounting joint 22 has a stopper 222 extending in a radial direction at the end of the external thread 221. The installation interface 13 is provided with a notch 132 at the tail of the internal thread 131, and the size of the notch 132 is adapted to the limit block 222. The ends of the gap 132 are slightly higher than the outer edge of the mounting interface 13.

In the process of screwing the internal thread 131 and the external thread 221, the limiting block 222 forms an interference fit with two ends of the notch 132. The stopper 222 elastically deforms when approaching both ends of the notch 132, and is clamped into the notch 132 by the restoring force of the elastic deformation of the stopper, and is fastened and fixed with the notch 132 when the internal thread 131 and the external thread 221 are completely screwed.

In this embodiment 1, an alternative design is provided, if the shape of the notch 132 is changed to a step shape, the size of the notch of the lowest step is adapted to the stopper 222, and when the internal thread 131 and the external thread 221 are completely screwed, the stopper 222 is fastened and fixed with the notch of the lowest step. If the shape of the notch 132 is changed to be arc, the shape of the stopper 222 is changed to be cylindrical correspondingly. The notch 132 and the limiting block 222 are adapted to each other to achieve a good engagement connection therebetween, and the description of the shape matching manner of the notch 132 and the limiting block 222 derived from the above concept is omitted.

In this embodiment 1, the circumferential fixed connection between the installation joint 22 and the installation interface 13 is realized through the snap-fit connection between the limiting block 222 and the notch 132, so that the fixed connection effect between the pilot valve 2 and the valve body 1 is enhanced.

Example 2

In embodiment 2, on the basis of embodiment 1, the pilot valve 2 and the valve body 1 are designed to be replaced in a circumferential fixed connection manner.

Referring to fig. 4 and 5, the mounting interface 13 is provided with a through hole 133 on the wall body with the internal thread 131, and the mounting adapter 22 is provided with a blind hole 223 on the wall body with the external thread 221, wherein the through hole 133 and the blind hole 223 correspond to each other after the internal thread 131 and the external thread 221 are completely screwed together. The through hole 133 and the blind hole 223 are driven with a screw 31, and the mounting interface 13 and the mounting joint 22 are connected through the screw 31, so that the valve body 1 and the pilot valve 2 are prevented from rotating relatively.

Referring to fig. 6 and 7, in embodiment 2, the screw 31 is replaced by a pin 32, which can also achieve the same effect and is not described in detail.

While various specific embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the described embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (4)

1. A water inlet valve which is not easy to loosen comprises a valve body (1) and a pilot valve (2); it is characterized in that the preparation method is characterized in that,

-the valve body (1) has a water inlet (11), a water outlet (12) and a mounting interface (13); the water inlet (11) and the water outlet (12) are communicated through a flow passage, a cavity (14) is arranged in the flow passage, the cavity (14) is communicated with the mounting interface (13), and the inner wall of the mounting interface (13) is provided with internal threads (131);

-the pilot valve (2) comprises a valve (21) and a mounting nipple (22); the valve (21) is positioned in the chamber (14) and cuts off a flow passage between the chamber (14) and the water outlet (12); the outer wall of the mounting joint (22) is provided with an external thread (221), and the mounting joint (22) is connected with the mounting interface (13) in a screwing mode through the external thread (221) and the internal thread (131); the mounting joint (22) and the mounting interface (13) are also fixedly connected in the circumferential direction through a limiting mechanism.

2. The fill valve of claim 1, wherein the stop mechanism comprises:

-a stop block (222) for mounting the joint (22) in a radially projecting position at the end of the external thread (221);

-the mounting interface (13) is formed with an axial notch (132) at the end of the internal thread (131), said notch (132) and said stop (222) having a shape and size adapted to allow said stop (222) to be axially recessed into said notch (132) to be locked when said mounting interface (22) is tightened down on said mounting interface (13).

3. The fill valve of claim 2, wherein both ends of the notch (132) protrude beyond the outer edge of the mounting adapter (13).

4. The inlet valve according to claim 1, wherein the limiting mechanism comprises a screw (31) or a pin (32), and,

-a through hole (133) provided in the wall provided with an internal thread (131) for mounting the interface (13);

-installing the joint (22) in a blind hole (223) provided in the wall provided with the external thread (221), said through hole (133) and blind hole (223) corresponding after the internal thread (131) and external thread (221) are completely screwed together;

the mounting joint (22) and the mounting interface (13) are fixedly connected in the circumferential direction through screws (31) or pins (32) driven into the through holes (133) and the blind holes (223).

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