CN214999952U

CN214999952U - Plug-in type quick joint

Info

Publication number: CN214999952U
Application number: CN202120146309.7U
Authority: CN
Inventors: 黄伟; 林爱素
Original assignee: Ningbo Taiyi Gas Equipment Technology Co ltd
Current assignee: Ningbo Taiyi Gas Equipment Technology Co ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-12-03
Anticipated expiration: 2031-01-20

Abstract

The utility model relates to an inserted quick-operation joint, this joint includes fixed joint and quick connector, fixed joint is equipped with the trepanning that is used for pegging graft quick connector, the fixed joint outer peripheral face is equipped with the ring slot that sets up for the trepanning annular, ring slot ring shape equipartition is equipped with the ball groove along the rand groove, ball groove outer end communicates with each other with the rand groove, ball inslot communicates with each other with fixed joint's trepanning, put into the ball in the ball groove, the rand of rand inslot embedding C type open type, the ball stretches into fixed joint's trepanning under the rand effect partially in, the external diameter face that quick connector inserted trepanning part is equipped with and blocks spacing ring channel with the downthehole ball of cover, the fixed joint outer peripheral face is equipped with the external screw thread, and threaded connection gland nut, support tight external diameter face when gland nut locks, and the part that keeps the ball stretches into fixed joint's trepanning supports tight ring channel in. The utility model discloses overall structure is comparatively simple, easily preparation and equipment use, and the pipe connector is comparatively reliable, stable, and life is longer.

Description

Plug-in type quick joint

Technical Field

The utility model relates to a pipe joint, in particular to a plug-in quick joint.

Background

The quick connector is a connector which can realize pipeline connection or disconnection without tools, and according to different connection modes, a common quick connector is divided into a plug-in type and a screwing type, the plug-in type quick connector can form quick sealing connection through plug-in connection of a parent body and a daughter, and the structure of the connector is usually locked by matching of balls and rolling grooves, for example, an annular groove is formed in the parent body, the daughter is provided with the balls moving along the radial direction, the outer diameter of the daughter is connected with a locking sleeve, the locking sleeve is used for providing radial acting force for the balls, and when the parent body is plugged with the daughter, the balls are embedded into the annular groove under the radial acting force, so that the quick pipe connecting operation is formed. Its advantage is convenient to connect, but the shortcoming lies in that the reliability of ball locking is influenced by radial constraint power, when radial force loss or not enough, will not realize reliable butt joint, and easy pine takes off. The existing plug-in type quick connector is limited by the locking sleeve which is required to be radially arranged on the ball, so that the locking sleeve and the ball are usually positioned on the same parent body or daughter, and the locking sleeve is required not to be loosened relative to the connector, so that the locking sleeves of a plurality of plug-in type quick connectors are not easy to detach, when the ball is damaged or abraded, the ball can only be integrally replaced, and the replacement cost is high. In addition, because the existing locking sleeve is in direct contact with the ball, when the joint encounters large disengaging force, the ball reversely forms large impact force on the locking sleeve, and the point stress of the ball is concentrated, so that the locking sleeve is easily damaged. For this reason, there is a need for an improvement of the existing plug-in quick coupling.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a plug-in quick coupling to the field, which solves the technical problems that the assembly of the existing similar quick coupling structure is complex, easy to damage, difficult to detach and maintain and the maintenance cost is high. The purpose is realized by the following technical scheme.

An inserted quick connector comprises a fixed connector and a quick connector, wherein the fixed connector is provided with a trepan boring for inserting the quick connector, and is characterized in that the peripheral surface of the fixed connector is provided with a clamping ring groove which is annularly arranged relative to the trepan boring, ball grooves are annularly and uniformly distributed along the clamping ring groove, the outer ends of the ball grooves are communicated with the clamping ring groove, the inner ends of the ball grooves are communicated with the trepan boring of the fixed connector, balls are put into the ball grooves, a C-shaped opening type clamping ring is embedded into the clamping ring groove, the balls partially extend into the trepan boring of the fixed connector under the action of the clamping ring, the outer diameter surface of the quick connector inserted trepan boring is provided with an annular groove which is clamped and limited by the balls in the trepan boring, the peripheral surface of the fixed connector is provided with external threads and is connected with a compression nut through threads, the outer diameter surface of the clamping ring is tightly pressed when the compression nut is compressed, and the part of the balls is kept to extend into the trepan boring of the fixed connector and tightly press the annular groove, when the compression nut is unscrewed, the abutting effect on the outer diameter of the clamping ring is removed. Through above-mentioned structure, utilize the rand spacing with the ball in the main joint, it is spacing that prior art adopts the lock sleeve to compare spacing mode, and the structure is comparatively simple, and ball and snap ring all are easily changed, and the replacement cost is lower. In addition, when the quick connector meets a large disengaging force, the peripheral surface of the clamping ring is contacted with the inner wall of the external compression nut, so that the compression nut can be effectively prevented from being damaged, and the service life is prolonged.

The outer diameter of the quick connector is provided with an annular sealing groove, and an O-shaped sealing ring used for sealing the quick connector and the inner wall of a sleeve hole of the fixed connector is arranged in the annular sealing groove. Through this structure, realize this quick-operation joint's reliable sealed.

One end of the compression nut is provided with a conical guide opening for guiding the clamping ring to enter the compression nut when the compression nut is locked. Through the structure, the compression nut locking connection is easier and more convenient, the clamping ring can be ensured to clamp the annular groove of the quick connector, and the locking effect is improved.

The two sides of the annular groove of the quick connector are provided with inclined planes which guide the ball to be separated from the annular groove when the quick connector moves axially relative to the trepan boring of the fixed connector. Through the structure, when the quick connector and the fixed joint are separated from each other, the ball is automatically jacked up, and abrasion between the ball and the annular groove is reduced.

And the peripheral surfaces of the fixed joint, the quick-plugging joint and the compression nut are respectively integrated with a screwing part for assisting in screwing operation. Through this structure, make things convenient for fixed joint and quick connector to revolve to twist to adjust.

The utility model discloses overall structure is comparatively simple, easily preparation and equipment use, and the pipe connector is comparatively reliable, stable, and life is longer, and is not fragile, and changes cost of maintenance relatively lower, is fit for the quick-operation joint use as all kinds of bellows, or the institutional advancement of similar joint.

Drawings

Fig. 1 is a schematic sectional structure diagram of the present invention.

Fig. 2 is a schematic view of the structure of the fixing joint in partial section.

Fig. 3 is a schematic view of the structure of the quick connector according to the present invention.

Fig. 4 is a schematic view of the structure of the present invention in a partial cross section.

The sequence numbers and names in the figure are: 1. the quick-connection type ball valve comprises a fixed joint, 101, a trepan boring, 102, a clamping ring groove, 103, a ball groove, 2, a quick-connection plug, 201, an annular groove, 202, an annular sealing groove, 203, an inclined plane, 3, a ball, 4, a clamping ring, 5, a compression nut, 501 and a conical guide opening.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

As shown in fig. 1-4, the plug-in quick coupling includes a fixed coupling 1 and a quick connector 2, the fixed coupling is provided with a trepan boring 101 for plugging the quick connector, the peripheral surface of the fixed coupling is provided with a ring groove 102 annularly arranged relative to the trepan boring, ball grooves 103 are annularly and uniformly distributed along the ring groove, the outer ends of the ball grooves are communicated with the ring groove, the inner ends of the ball grooves are communicated with the trepan boring of the fixed coupling, balls 3 are put in the ball grooves, a C-shaped opening type ring 4 is embedded in the ring groove, the ring is a circular steel wire structure or a flat structure with a rectangular cross section, the balls partially extend into the trepan boring of the fixed coupling under the action of the ring, the outer diameter surface of the portion of the quick connector inserted into the trepan boring is provided with a ring groove 201 for limiting the ball in the trepan boring, and the two sides of the ring groove are provided with inclined surfaces 203 for guiding the balls to separate from the ring groove when the quick connector moves axially relative to the trepan boring of the fixed coupling. The outer peripheral surface of the fixed joint is provided with external threads and is in threaded connection with a compression nut 8, and one end of the compression nut is provided with a conical guide opening 801 for guiding the clamping ring to enter the compression nut when the compression nut is locked. When the compression nut is locked, the compression nut tightly abuts against the outer diameter surface of the retainer ring and keeps the part of the ball to extend into the sleeve hole of the fixed joint to be clamped with the annular groove; when the compression nut is unscrewed, the abutting effect on the outer diameter of the clamping ring is removed, and the quick-connection plug can be inserted or separated relative to the fixed joint.

In order to form reliable sealing between the quick connector 2 and the fixed connector 1, more than one annular sealing groove 202 is arranged on the outer diameter of the quick connector, and an O-shaped sealing ring for sealing the quick connector and the inner wall of the trepanning 101 of the fixed connector is arranged in the annular sealing groove.

In order to adjust the screwing adjustment of the fixed joint 1 and the quick-plugging joint 2 conveniently, the peripheral surfaces of the fixed joint, the quick-plugging joint and the compression nut 5 are respectively integrated with screwing parts for assisting the screwing operation.

The above contents are intended to illustrate the technical means of the present invention, and do not limit the technical scope of the present invention. Obvious modifications to the invention, combined with the prior common general knowledge, are also within the scope of the claims of the invention.

Claims

1. An insertion type quick connector comprises a fixed connector (1) and a quick connector (2), wherein the fixed connector is provided with a trepan boring (101) for inserting the quick connector, and is characterized in that the peripheral surface of the fixed connector (1) is provided with a clamping ring groove (102) which is annularly arranged relative to the trepan boring (101), ball grooves (103) are annularly and uniformly distributed along the clamping ring groove, the outer ends of the ball grooves are communicated with the clamping ring groove, the inner ends of the ball grooves are communicated with the trepan boring of the fixed connector, balls (3) are placed in the ball grooves, a C-shaped open type clamping ring (4) is embedded in the clamping ring groove, the balls partially extend into the trepan boring of the fixed connector under the action of the clamping ring, the outer diameter surface of the part of the quick connector inserted into the trepan boring is provided with an annular groove (201) which is blocked and limited by the balls in the trepan boring, the peripheral surface of the fixed connector is provided with external threads and is in threaded connection with a compression nut (5), when the compression nut is locked, the compression nut tightly abuts against the outer diameter surface of the clamping ring, the part of the ball is kept to extend into the sleeve hole of the fixed joint and tightly abuts against the annular groove, and when the compression nut is loosened, the abutting effect on the outer diameter of the clamping ring is removed.

2. The quick connector according to claim 1, wherein the outer diameter of the quick connector (2) is provided with an annular sealing groove (202), and an O-shaped sealing ring for sealing the quick connector with the inner wall of the trepan boring (101) of the fixed connector (1) is arranged in the annular sealing groove.

3. A male quick-coupling according to claim 1, characterized in that the clamping nut (5) is provided at one end with a conical guide opening (501) for guiding the collar (4) into the clamping nut when the clamping nut is tightened.

4. The plug-in quick coupling according to claim 1, characterized in that the annular groove (201) of the quick coupling (2) is flanked by ramps (203) which guide the balls (3) out of the annular groove as the quick coupling moves axially relative to the trepan (101) of the fixed coupling (1).

5. The plug-in quick coupling according to claim 1, characterized in that the respective outer peripheries of the fastening coupling (1), the quick connector coupling (2) and the clamping nut (5) are provided with a screwing portion for assisting the screwing operation.