CN202109130U

CN202109130U - Valve core structure of quick coupling of fluid pipeline

Info

Publication number: CN202109130U
Application number: CN201120204410XU
Authority: CN
Inventors: 杨丽梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-16
Filing date: 2011-06-16
Publication date: 2012-01-11
Anticipated expiration: 2021-06-16

Abstract

The utility model discloses a valve core structure of a quick coupling of a fluid pipeline, which comprises a rear seat, a rear sliding sleeve, a middle seat and a valve core, wherein the middle seat is in threaded connection with the inner cavity of the rear seat; the rear sliding sleeve is sheathed in the inner cavity at one end of the middle seat to be in sealing fit with the rear seat; the valve core is divided into two sections of a valve core body and a front sliding sleeve; a sealing pad is arranged between the valve core body and the front sliding sleeve; one end of the valve core body is provided with a sealing ring to be sheathed in the rear sliding sleeve in a sliding way; the front sliding sleeve is arranged in the inner cavity at the other end of the middle seat; the other end of the valve core body is provided with an annular boss; a blind hole is arranged at the center of the other end of the valve core body; one end of the sealing pad is provided with an annular groove to be in sealing fit with the annular boss; the other end of the sealing pad is provided with a groove for containing a pipeline joint inserted core; a conical connector with the large end facing to the annular boss is arranged between the sealing ring of the valve core body and the annular boss; and the conical connector is provided with an opening to be connected with the blind hole. The valve core structure has good sealing performance, the sealing pad is not easy to be pulled out after repeated use, and the plugging resistance when the quick coupling is plugged can be reduced.

Description

A kind of valve core structure of fluid circuit rapid pipe joint

Technical field

The utility model relates to the valve core structure of the rapid pipe joint that a kind of fluid circuit uses.

Background technique

The rapid pipe joint of using in liquid, the fluid delivery pipeline system such as pneumatic is a kind of pipe joint that instrument just can fast assembling-disassembling that do not need; It is plug-in mounting fast; And has unidirectional check function after breaking off; This rapid pipe joint is easy to use flexibly, in all kinds of electric equipment such as package packing machine, medical machinery, power equipment, welding equipment or industry, is widely used.

As shown in Figure 1; Utility model patent ZL 201020549769.6 " a kind of rapid pipe joint of fluid delivery pipeline " discloses a kind of rapid pipe joint, comprises back seat 11, back sliding sleeve 12, middle seat 13, air valve seat 14, and said middle seat 13 is threadedly connected to back seat 11 inner chambers; During being set in, back sliding sleeve 12 is sealed and matched in the seat 13 1 end inner chambers 131 and with back seat 11; Wherein said air valve seat 14 is divided into

valve body

141 and 142 two sections of preceding sliding sleeves, is provided with sealing gasket 3 between valve body 141 and the preceding sliding sleeve 142, and valve body 141 flip sleeves are located in the sliding sleeve 12 of back; Preceding sliding sleeve 142 is located in middle seat 13 the other end inner chambers 132; Be provided with the cavity that is interconnected 1411 of conveyance fluid in the valve body 141, valve body 141 is provided with protruding annular protrusion 1413, and sealing gasket 3 one ends are provided with annular groove 31 and are sealed and matched with annular protrusion 1413; Sliding sleeve 142 before the other end 32 of sealing gasket 3 connects, the end face 32 of sealing pad 3 also are tightly connected with the pipe coupling lock pin 2 that seat 13 the other end inner chambers 132 therefrom penetrate.Air valve seat 14 is divided into

valve body

141 and 142 two sections of preceding sliding sleeves; And between valve body 141 and the preceding sliding sleeve 142 sealing gasket 3 is set; Guaranteeing that rapid pipe joint has excellent sealing performance, and guarantee that sealing gasket is not easy to be pulled out after repeatedly rapid pipe joint is used in plug, improved the performance of rapid pipe joint.

Valve seat 14 in this rapid pipe joint is also referred to as spool, is relatively more crucial in a rapid pipe joint part, and spool and valve core can design multiple structure according to actual needs, further improves and improves.

Summary of the invention

The utility model purpose provides a kind of good sealing effect, the convenient valve core structure of making and can reducing the rapid pipe joint of the fluid delivery pipeline that plugs resistance.

The utility model adopts following scheme to realize: the valve core structure of fluid circuit rapid pipe joint comprises back seat, back sliding sleeve, middle seat, spool; Seat is threadedly connected to the back seat inner chamber in said; During back sliding sleeve is set in the seat one end inner chamber and be sealed and matched with back seat, spool is divided into two sections of valve core and preceding sliding sleeves, is provided with sealing gasket between valve core and the preceding sliding sleeve; Valve core one end is provided with the seal ring flip sleeve and is located in the sliding sleeve of back; In the seat the other end inner chamber, the valve core the other end is provided with annular protrusion in advancing slip being sheathed on, and valve core the other end center is provided with blind hole; Sealing gasket one end is provided with annular groove and annular protrusion is sealed and matched; The other end of wherein said sealing gasket is provided with the groove of ccontaining pipe coupling lock pin, is provided with the conical connecting body of big end towards annular protrusion between the seal ring of said valve core and the annular protrusion, and conical connecting body is provided with opening and links to each other with blind hole.

The outer ring of the annular groove of said sealing gasket is provided with the sealing strip of skirt shape, and sealing strip and middle seat inner chamber middle part are sealed and matched.

The beneficial effect of the utility model is: adopt said structure; Between the seal ring of valve core and annular protrusion, be provided with the conical connecting body of big end towards annular protrusion; Reduce the area of contact of valve core and back sliding sleeve, the plug resistance in the time of can reducing the rapid pipe joint plug; The other end of said sealing gasket is provided with the groove of ccontaining lock pin simultaneously, and sliding sleeve and sealing gasket better are sealed and matched before making; The outer ring of the annular groove of said sealing gasket is provided with the sealing strip of skirt shape, and the sealing strip of the skirt shape of assurance sealing gasket can be good at strutting with middle seat bore seal and cooperates, and it is had with good sealability, can not leak gas.

The utility model guarantees that enough better rapid pipe joint has excellent sealing performance, repeatedly plug uses the back sealing gasket to be not easy to be pulled out, the plug resistance in the time of reducing the rapid pipe joint plug again.

Description of drawings

Combine accompanying drawing that the utility model is done further elaboration at present:

Fig. 1 is the cross-sectional schematic of the rapid pipe joint in the patent formerly;

Cross-sectional schematic when Fig. 2 is the utility model rapid pipe joint insertion lock pin;

Fig. 3 is the perspective view of the utility model rapid pipe joint spool;

Fig. 4 is the cross-sectional schematic of the utility model rapid pipe joint sealing gasket;

Fig. 5 is the cross-sectional schematic of the utility model rapid pipe joint when not inserting lock pin.

Embodiment

Extremely shown in Figure 5 like Fig. 2; The utility model comprises back seat 11, back sliding sleeve 12, middle seat 13, spool 14, and said middle seat 13 is threadedly connected to back seat 11 inner chambers, is sealed and matched in the seat 13 1 end inner chambers 131 and with back seat 11 during back sliding sleeve 12 is set in; Spool 14 is divided into

valve core

141 and 142 two sections of preceding sliding sleeves; Be provided with sealing gasket 3 between valve core 141 and the preceding sliding sleeve 142, valve core 141 1 ends are provided with seal ring 15 flip sleeves and are located in the sliding sleeve 12 of back, and preceding sliding sleeve 142 is located in middle seat 13 the other end inner chambers 132; Valve core 141 the other ends are provided with annular protrusion 1413; Valve core 141 the other end centers are provided with blind hole 1411, and sealing gasket 3 one ends are provided with annular groove 31 and are sealed and matched with annular protrusion 1413, and wherein the other end of sealing gasket 3 is provided with the groove 34 of ccontaining pipe coupling lock pin 2; Be provided with the conical connecting body 1414 of big end towards annular protrusion 1413 between the seal ring 15 of said valve core 141 and the annular protrusion 1413, conical connecting body 1414 is provided with opening 1415 and links to each other with blind hole 1411.

The outer ring of the annular groove 31 of said sealing gasket 3 is provided with the sealing strip 33 of skirt shape, and sealing strip 33 is sealed and matched with middle seat 13 inner chambers middle part.

When rapid pipe joint has pipe coupling lock pin 2 to insert; Leave the gap between seal ring 15 that is provided with on the valve core 141 and the back sliding sleeve 12; The blind hole 1411 that liquid, fluid such as pneumatic get into valve core 141 and opening 1415 backs flow to left end from the right-hand members of rapid pipe joint, and liquid, fluid such as pneumatic also can flow to right-hand member from left end; The sealing strip 33 of the skirt shape of sealing gasket 3 can be good at strutting with middle seat 13 bore seal and cooperates, and it is had with good sealability, can not leak gas.

When not having pipe coupling lock pin 2 to insert in the rapid pipe joint, under the effect of returning spring, closely cooperate between seal ring 15 that is provided with on the valve core 141 and the back sliding sleeve 12, the right ends of rapid pipe joint is not communicated with.

Claims

1. the valve core structure of a fluid circuit rapid pipe joint; Comprise back seat, back sliding sleeve, middle seat, spool, said middle seat is threadedly connected to the back seat inner chamber, is sealed and matched in the seat one end inner chamber and with back seat during back sliding sleeve is set in; Spool is divided into two sections of valve core and preceding sliding sleeves; Be provided with sealing gasket between valve core and the preceding sliding sleeve, valve core one end is provided with the seal ring flip sleeve and is located in the sliding sleeve of back, advancing slip being sheathed in the middle seat the other end inner chamber; The valve core the other end is provided with annular protrusion; Valve core the other end center is provided with blind hole, and sealing gasket one end is provided with annular groove and annular protrusion is sealed and matched, and it is characterized in that: the other end of said sealing gasket is provided with the groove of ccontaining pipe coupling lock pin; Be provided with the conical connecting body of big end towards annular protrusion between the seal ring of said valve core and the annular protrusion, conical connecting body is provided with opening and links to each other with blind hole.

2. the valve core structure of a kind of fluid circuit rapid pipe joint according to claim 1 is characterized in that: the outer ring of the annular groove of said sealing gasket is provided with the sealing strip of skirt shape, and sealing strip and middle seat inner chamber middle part are sealed and matched.