CN217108232U

CN217108232U - Self-sealing valve

Info

Publication number: CN217108232U
Application number: CN202220610953.XU
Authority: CN
Inventors: 陈光凯; 钱华祥
Original assignee: Ivalve Tech Tongling Co ltd
Current assignee: Ivalve Tech Tongling Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-08-02
Anticipated expiration: 2032-03-21

Abstract

The utility model discloses a self sealss valve relates to valve technical field. The utility model comprises a valve body, wherein the valve body is provided with a valve seat which is in a tubular structure, and the upper end of the valve seat is fixedly connected with a valve cover; the valve cover is fixedly connected with a nut, and is connected with a screw rod through the nut; the lower end of the screw rod extends into the valve seat and is connected with a sealing plug body matched with the inner wall of the valve seat; the lower end face of the sealing plug body is fixedly connected with a valve plug block; the periphery of the sealing plug body is provided with a plurality of annular grooves, and the annular grooves are internally provided with sealing rings for sealing the space between the valve seat and the sealing plug body through the sealing rings. The utility model discloses a set up the lead screw and connect sealed cock body, utilize sealed cock body and disk seat cooperation, realize the sealing between disk seat and valve body inner chamber, solved the decline of current valve rotation portion sealing performance, influence the problem of self sealss valve life and performance.

Description

Self-sealing valve

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to a self sealss valve.

Background

The valve is a control part in a fluid conveying system, has the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, is used for the valve of the fluid control system, and has quite a plurality of varieties and specifications from the simplest stop valve to various valves used in an extremely complicated automatic control system. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

The valve self-sealing is mainly applied to some high-pressure working conditions, the valve is sealed through bolt pre-tightening, the wedge-shaped sealing in the structure of the valve becomes tighter and tighter along with the increase of working pressure, and the sealing performance is better. However, after the existing valve is used for a long time, the sealing performance of the rotating part of the existing valve is reduced, so that the situation that the valve seat at the top end of the valve is easy to seep water is caused, and the service performance and the service life of the self-sealing valve are seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a self sealss valve connects sealed cock body through setting up the lead screw, utilizes sealed cock body and disk seat cooperation, realizes having solved the decline of current valve rotation portion sealing performance to the sealed of disk seat and valve body inner chamber within a definite time, influences the problem of self sealss valve life and performance.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a self-sealing valve, which comprises a valve body, wherein the valve body is provided with a valve seat, the valve seat is of a tubular structure, and the upper end of the valve seat is fixedly connected with a valve cover; the valve cover is fixedly connected with a nut, and is connected with a screw rod through the nut; the lower end of the screw rod extends into the valve seat and is connected with a sealing plug body matched with the inner wall of the valve seat; the lower end face of the sealing plug body is fixedly connected with a valve plug block; the periphery of the sealing plug body is provided with a plurality of annular grooves, and sealing rings are arranged in the annular grooves and used for sealing the valve seat and the sealing plug body through the sealing rings.

As an optimized technical scheme of the utility model, the lead screw lower extreme rotates between with the sealing plug body and is connected.

As the utility model discloses a preferred technical scheme, the sealing plug body is the open tubular structure in upper end, and the lead screw lower extreme is connected with the interior diapire of the sealing plug body.

As an optimized technical scheme of the utility model, a plurality of strengthening ribs of fixedly connected with between sealed cock body inside wall and interior diapire.

As an optimized technical scheme of the utility model, the inclosed hollow tank body structure of sealing plug body, and the lead screw lower extreme is connected with sealing plug body's roof.

The utility model discloses following beneficial effect has:

the utility model discloses a sealed cock body is connected to the lead screw, utilizes the sealed between sealed cock body and disk seat, realizes the sealed between the inner chamber of disk seat upper end valve gap and valve body, has avoided long-time use or rotation between lead screw and screw, leads to the sealing performance to descend, and the condition of infiltration appears takes place to make the sealing performance of self sealss valve obtain effectual improvement, thereby the effectual life and the performance that has improved self sealss valve.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a self-sealing valve of the present invention;

FIG. 2 is a half sectional view of FIG. 1;

FIG. 3 is an enlarged view of the portion A in FIG. 2;

FIG. 4 is a schematic view of the self-sealing valve when open;

in the drawings, the components represented by the respective reference numerals are listed below:

1-valve body, 2-screw rod, 3-sealing plug body, 101-valve seat, 102-valve cover, 103-nut, 301-valve plug block, 302-sealing ring and 303-reinforcing rib.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements 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.

Example one

Please refer to fig. 1 and 2, the present invention relates to a self-sealing valve, which comprises a valve body 1, wherein the valve body 1 is provided with a valve seat 101, the valve body 1 and the valve seat 101 can be an integrated structure, the valve seat 101 is a tubular structure, and the upper end of the valve seat 101 is fixedly connected with a valve cover 102 through a bolt.

The valve cover 102 is fixedly connected with a nut 103, and is connected with a screw rod 2 through the nut 103, the screw rod 2 is matched with the nut 103, a hand wheel is installed at the upper end of the screw rod 2, so that the screw rod 2 can be conveniently rotated, the axial movement of the screw rod 2 is realized through the rotation of the screw rod, the lower end of the screw rod 2 extends into the valve seat 101, and is connected with a sealing plug body 3 matched with the inner wall of the valve seat 101.

The terminal surface passes through spliced pole fixed connection valve chock 301 under the sealed chock 3, drives 3 axial displacement of sealed chock through lead screw 2, drives valve chock 301 then, realizes opening and close to valve body 1 through valve chock 301.

As shown in fig. 3, two to six annular grooves are formed in the circumferential surface of the sealing plug body 3, and sealing rings 302 are installed in the annular grooves and used for sealing between the valve seat 101 and the sealing plug body 3 through the sealing rings 302.

As shown in fig. 2 and 4, seal between the inner chamber of valve body 1 and valve seat 101 through sealed cock body 3, drive the in-process of sealed cock body 3 axial displacement through lead screw 2, guarantee throughout that lead screw 2 can not contact the inside fluid of valve body 1, the corruption of lead screw 2 is ageing, and the sealing pressure of valve gap 102 department has been reduced, thereby avoid the condition emergence of the infiltration easily appearing in current self sealss valve disk seat upper end, thereby make the holistic life of self sealss valve and performance of this application obtain effectual improvement.

Meanwhile, the lower end of the screw rod 2 is rotatably connected with the sealing plug body 3, if a bearing seat is arranged on the sealing plug body 3, the lower end of the screw rod 2 is connected with the bearing seat, and axial position limitation is carried out through a nut or a snap spring. Through rotating between lead screw 2 and the sealed cock body 3 and being connected, can avoid sealed cock body 3 to rotate along with lead screw 2 is synchronous, and increases the lead screw 2 and rotate the degree of difficulty to and increase the condition emergence of wearing and tearing between sealing washer 302 and the disk seat 101 inner wall, be favorable to improving holistic convenience of use and life.

Example two

In addition to the first embodiment, as shown in fig. 3, the sealing plug body 3 is a cylindrical structure with an open upper end, and the lower end of the screw rod 2 is connected with the inner bottom wall of the sealing plug body 3. Set up the sealing plug body 3 into tubular structure for the obtaining of sealing plug body 3 reduces, thereby is favorable to reducing the holistic quality of self sealss valve. Meanwhile, the sealing plug body 3 is of a cylindrical structure with an open upper end, so that after the foreign matters such as lubricating grease or chips between the screw rod 2 and the screw 103 fall into the valve seat 101, the foreign matters can directly fall into the sealing plug body 3, the situation that the foreign matters are clamped between the sealing plug body 3 and the inner wall of the valve seat 101 is avoided, and the foreign matters are brought into the inner cavity of the valve body 1 after being used for a long time.

Four to eight reinforcing ribs 303 are welded or integrally cast between the inner side wall and the inner bottom wall of the sealing plug body 3, so as to improve the overall structural strength of the sealing plug body 3.

EXAMPLE III

On the basis of embodiment one, sealed cock body 3 still can set up to inclosed hollow tank structure, and 2 lower extremes of lead screw are connected with sealed cock body 3's roof, and the holistic structural strength of sealed cock body 3 of hollow tank structure compares the tubular structure of embodiment two higher, compares the quality of embodiment one also lower simultaneously to make sealed cock body 3's performance more comprehensive, make the holistic practicality of self-sealing valve and performance obtain improving.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-sealing valve, comprising a valve body (1), characterized in that: the valve body (1) is provided with a valve seat (101), the valve seat (101) is of a tubular structure, and the upper end of the valve seat (101) is fixedly connected with a valve cover (102);

the valve cover (102) is fixedly connected with a nut (103), and is connected with a screw rod (2) through the nut (103); the lower end of the screw rod (2) extends into the valve seat (101) and is connected with a sealing plug body (3) matched with the inner wall of the valve seat (101);

the lower end face of the sealing plug body (3) is fixedly connected with a valve plug block (301); the periphery of the sealing plug body (3) is provided with a plurality of annular grooves, and sealing rings (302) are arranged in the annular grooves and used for sealing between the valve seat (101) and the sealing plug body (3) through the sealing rings (302).

2. A self-sealing valve according to claim 1, characterised in that the lower end of the screw (2) is rotatably connected to the sealing plug body (3).

3. A self-sealing valve according to claim 1 or 2, wherein the sealing plug body (3) is a cylindrical structure with an open upper end, and the lower end of the screw rod (2) is connected with the inner bottom wall of the sealing plug body (3).

4. A self-sealing valve as claimed in claim 3, characterised in that a plurality of ribs (303) are fixedly connected between the inner side wall and the inner bottom wall of the sealing plug body (3).

5. A self-sealing valve as claimed in claim 1 or 2, characterised in that the sealing plug body (3) is of a closed hollow can construction and the lower end of the screw (2) is connected to the top wall of the sealing plug body (3).