CN215980971U

CN215980971U - Stop check valve structure

Info

Publication number: CN215980971U
Application number: CN202120172116.9U
Authority: CN
Inventors: 方元坤
Original assignee: Xiamen Apisi Intelligent Manufacturing System Co ltd
Current assignee: Xiamen Apisi Intelligent Manufacturing System Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2022-03-08
Anticipated expiration: 2031-01-21

Abstract

The utility model discloses a stop check valve structure, which comprises a valve cavity and a check valve body arranged in the valve cavity, wherein a fixing device is arranged between the check valve body and the valve cavity, the check valve body and the valve cavity can be fixedly connected, the fixing device is of a buckle structure, and the check valve body is in buckle connection with the valve cavity. The structure solves the problem that the check valve is easy to flush water out of the valve cavity, avoids the problem that the product cannot check to cause water backflow and pollute the water source after the check valve is flushed out, ensures that the check valve plays a check role in the true sense, protects the cleanness of the water source, and really achieves healthy water.

Description

Stop check valve structure

Technical Field

The utility model relates to a stop check valve structure.

Background

In the process of daily life, when the switch of the water tap is closed, certain negative pressure can be generated between the water tap and a container for containing water, and the negative pressure can cause the back suction effect of gas in the water tap, so that dirty water can be sucked back, and a check valve is created for solving the problem. The existing check valve structurally has no stop structure, when the water pressure in the valve cavity is slightly higher, the check valve can be easily flushed out of the valve cavity, so that the check valve cannot achieve the check effect, water flows back, and a water source is polluted.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a structure of a check stop valve.

The utility model is realized by the following technical scheme:

a stop check valve structure comprises a valve cavity and a check valve body arranged in the valve cavity, wherein a fixing device is arranged between the check valve body and the valve cavity, and the check valve body and the valve cavity can be fixedly connected.

In the embodiment of the utility model, the fixing device is of a buckle structure, and the check valve body is connected with the valve cavity in a buckle mode.

In the embodiment of the utility model, the outer annular wall of the check valve body is provided with an annular first groove, and the inner annular wall of the valve cavity is provided with a convex rib matched with the first groove.

In the embodiment of the utility model, the outer annular wall of the check valve body is provided with an annular bulge, and the inner annular wall of the valve cavity is provided with a second groove matched with the annular bulge.

In the embodiment of the utility model, the outer annular wall of the check valve body is provided with a convex block, and the inner annular wall of the valve cavity is provided with a third groove matched with the convex block.

In the embodiment of the utility model, the convex blocks are distributed on the outer annular wall of the check valve body in a central mode.

In the embodiment of the utility model, the fixing device is a magnetic part, the check valve body is provided with a first magnetic part, the valve cavity is provided with a second magnetic part matched with the first magnetic part, and the check valve body is magnetically connected with the valve cavity.

In the embodiment of the utility model, the fixing device is a screw thread, the check valve body is provided with a first screw thread, the valve cavity is provided with a second screw thread matched with the first screw thread, and the check valve body is spirally connected with the valve cavity.

In the embodiment of the utility model, the check valve body comprises a valve body, the end part of the valve body is provided with a valve cover, a valve core is arranged in the valve body, an elastic part is arranged between the valve core and the valve cover, the valve core comprises a guide post, and the valve cover is provided with a guide groove capable of accommodating the guide post.

In the embodiment of the utility model, a first sealing ring is arranged between the valve body and the valve cavity, and a second sealing ring is arranged between the valve core and the valve body.

The stop check valve structure has the following beneficial effects: the structure solves the problem that the check valve is easy to flush water out of the valve cavity, avoids the problem that the product cannot check to cause water backflow and pollute the water source after the check valve is flushed out, ensures that the check valve plays a check role in the true sense, protects the cleanness of the water source, and really achieves healthy water.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a sectional view of a first embodiment of the present invention.

Fig. 2 is a sectional view of a check valve body according to an embodiment of the present invention.

Fig. 3 is a perspective view of a check valve body according to an embodiment of the present invention.

Fig. 4 is a sectional view of a second embodiment of the present invention.

Fig. 5 is a sectional view of a check valve body according to a second embodiment of the present invention.

Fig. 6 is a perspective view of a check valve body according to a second embodiment of the present invention.

Fig. 7 is a sectional view of a third embodiment of the present invention.

Fig. 8 is a perspective view of a three-way check valve body according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the utility model. In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein.

Referring to the attached drawings, the utility model provides a stop check valve structure, which comprises a valve cavity 200 and a check valve body 100 arranged in the valve cavity, wherein a fixing device is arranged between the check valve body and the valve cavity, and the check valve body and the valve cavity can be fixedly connected.

In this embodiment, the check valve body includes a valve body 10, a valve cover 20 is disposed at a lower end of the valve body, a water hole is disposed on the valve cover, a valve core 30 is disposed in the valve body, an elastic member 32 is disposed between the valve core and the valve cover, the valve core includes a guide post 31, and a guide groove 21 capable of accommodating the guide post is disposed on the valve cover. The working principle of the check valve is as follows: because the check valve adopts a one-way circulation structure, when water flows into the check valve from the valve cover, the elastic element gives an elastic force to the valve core, so that the valve core and the valve body are tightly combined, and a water flow channel is closed. When the water flow switch is opened, water flow flows into the non-return valve body from the upper end of the valve body, at the moment, the water flow gives an impact force to the valve core, and the impact force forces the valve core to move downwards to overcome the elastic force of the elastic piece, so that the water flow channel is opened. Furthermore, a first sealing ring 11 can be arranged between the valve body and the valve cavity, a second sealing ring 12 is arranged between the valve core and the valve body, and the sealing ring is arranged at the joint for sealing.

In one embodiment, the fixing device is a snap structure, that is, the check valve body is connected with the valve cavity in a snap manner. The fastening structure in this embodiment is not limited to the three cases described below, and all structures that can fasten the check valve body and the valve cavity, such as the hook, the bolt, and the guide groove, are within the protection scope of this embodiment.

In the first embodiment, the annular first groove 110 is disposed on the outer annular wall of the check valve body, and the rib 210 matched with the first groove is disposed on the inner annular wall of the valve chamber. Specifically, a first groove structure can be added on the valve cover of the check valve body, and the stop effect is achieved through the cooperation of the first groove structure and the convex rib structure of the valve cavity. It is of course also possible to provide the first recess in the outer circumferential wall of the valve body. The first grooves and the convex ribs can be matched in multiple groups, so that the firmness of connection between the valve cavity and the check valve body is improved, and the check valve body is more difficult to separate from the valve cavity. The first grooves and the ribs can be arranged on the valve body, the valve cover or both the valve body and the valve cover.

In the second embodiment, an annular protrusion 120 is disposed on the outer annular wall of the check valve body, and a second groove 220 is disposed on the inner annular wall of the valve chamber and matches with the annular protrusion. Specifically, an annular bulge can be added on the top end of the valve body of the check valve body, and the stop effect is achieved through the structural matching of the annular bulge and the second groove of the valve cavity. Of course, an annular protrusion can be added on the valve cover. The annular projection may be a full circle or an open ring. The annular projection and the second groove can be matched in number and are arranged on the valve body partially and the valve cover partially.

In the third embodiment, the protrusion 130 is disposed on the outer annular wall of the check valve body, and the third groove 230 is disposed on the inner annular wall of the valve chamber and matches with the protrusion. Specifically, a bump can be added on the valve cover or the top end of the valve body of the check valve, and the bump is matched with the third groove structure of the valve cavity, so that the stopping effect is achieved. The projections may be centrally disposed on the outer circumferential wall of the check valve body. Of course, multiple sets of protrusions and third grooves may be provided to increase the firmness of the connection. The number of the convex blocks is preferably three, and the convex blocks are distributed on the top end of the valve cover or the valve body in the center.

In one embodiment, the fixing device is a magnetic member, a first magnetic member (not shown) is disposed on the check valve body, a second magnetic member (not shown) is disposed on the valve cavity and cooperates with the first magnetic member, and the check valve body is magnetically coupled with the valve cavity.

In another embodiment, the fixing device is a screw thread, the check valve body is provided with a first screw thread (not shown), the valve cavity is provided with a second screw thread (not shown) matched with the first screw thread, and the check valve body is spirally connected with the valve cavity. When the check valve is used, the check valve body is screwed into the screw threads of the valve cavity, so that the check valve body is in screw connection with the screw threads, and the check valve body is not easily taken out of the valve cavity by water flow. The check valve body can be unscrewed when no longer in use.

The fixation means between the valve chamber and the non-return valve body are not limited to the embodiments described above, all removable and non-removable within the contemplation of the present invention.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A stop check valve structure is characterized by comprising a valve cavity and a check valve body arranged in the valve cavity, wherein a fixing device is arranged between the check valve body and the valve cavity, the check valve body and the valve cavity can be fixedly connected, the fixing device is of a buckle structure, and the check valve body is in buckle connection with the valve cavity.

2. The stop check valve structure as claimed in claim 1, wherein an annular first groove is formed on an outer annular wall of the check valve body, and a rib engaged with the first groove is formed on an inner annular wall of the valve chamber.

3. The structure of a stop check valve as claimed in claim 1, wherein an annular protrusion is formed on an outer annular wall of the check valve body, and a second groove matched with the annular protrusion is formed on an inner annular wall of the valve chamber.

4. The stop check valve structure as claimed in claim 1, wherein a protrusion is formed on an outer circumferential wall of the check valve body, and a third groove is formed on an inner circumferential wall of the valve chamber to be engaged with the protrusion.

5. A stop check valve structure according to claim 4, wherein said projections are centrally located on the outer annular wall of the check valve body.

6. The structure of a stop check valve according to any one of claims 1 to 5, wherein the check valve body comprises a valve body, a valve cover is provided at an end of the valve body, a valve core is provided in the valve body, an elastic member is provided between the valve core and the valve cover, the valve core comprises a guide post, and a guide groove capable of receiving the guide post is provided on the valve cover.

7. The stop check valve structure as claimed in claim 6, wherein a first sealing ring is disposed between the valve body and the valve chamber, and a second sealing ring is disposed between the valve core and the valve body.