CN201803030U

CN201803030U - Quick coupling for fluid conveying pipeline

Info

Publication number: CN201803030U
Application number: CN2010205497696U
Authority: CN
Inventors: 涂柏明
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-11
Filing date: 2010-10-11
Publication date: 2011-04-20
Anticipated expiration: 2020-10-11

Abstract

The utility model discloses a quick coupling for a fluid conveying pipeline, comprising a rear base, rear sliding sleeves, middle bases and an air valve seat, wherein the middle bases are connected with the cavity of the rear base by threads; the rear sliding sleeves are sleeved in the cavities at one end of the middle bases and are in seal fit with the rear base; the air valve seat is divided into a valve seat body and a front sliding sleeve; sealing gaskets are arranged between the valve seat body and the front sliding sleeve; the valve seat body is sleeved in the rear sliding sleeves in a sliding manner; the front sliding sleeve is arranged in the cavities at the other end of the middle bases; the valve seat body is provided with a cavity and raised ring-shaped bosses; one end of the sealing gaskets is provided with ring-shaped grooves in seal fit with the ring-shaped bosses; the other end faces of the sealing gaskets are connected with the front sliding sleeve and are in seal connection with a pipeline coupling; more than two oval holes are arranged on cylindrical surfaces at the other end of the middle bases; oval steel balls are arranged in the oval holes; and the steel balls are fit with the ring-shaped grooves on the pipeline coupling to connect the quick coupling with the pipeline coupling through clamping and fixing. The utility model improves the sealing property of the quick coupling and connection stability.

Description

A kind of rapid pipe joint of fluid delivery pipeline

Technical field

The utility model relates to a kind of rapid pipe joint of fluid delivery pipeline.

Background technique

The rapid pipe joint of using in hydraulic pressure, 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, and this rapid pipe joint is easy to use flexibly, uses very extensive.The structure of existing rapid pipe joint 1 as shown in Figure 1, comprise back seat 11, back sliding sleeve 12, middle seat 13, air valve seat 14, seat 13 is threadedly connected in the back seat 11 in described, 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, the sheathed air valve seat 14 of slip in the back sliding sleeve 12, be provided with the cavity that is interconnected 1411 of conveyance fluid in the air valve seat 14, be provided with a ring groove 1412 in the cavity 1411, be provided with sealing gasket 3 in this ring groove 1412, sealability when sealing gasket 3 pipe coupling 2 that seat 13 inner chambers penetrate that is tightly connected therefrom, sealing pad 3 guarantee that rapid pipe joints 1 are connected with pipe coupling 2, can not leak gas; In also be provided with two above holes 133 on the cylndrical surface of seat 13 the other end inner chambers 132, be provided with steel ball 4 in the hole 133, steel ball 4 cooperates with circular groove 21 in the pipe coupling 2 rapid pipe joint 1 and pipe coupling 2 fixings is linked together.

Adopt said structure, need in air valve seat 14, process a ring groove 1412, after repeatedly plug connects rapid pipe joint 1 and pipe coupling 2, the sealing gasket of being located in the ring groove 1,412 3 is pulled out easily, cause the seal failure of rapid pipe joint 1, and ring groove 1412 difficult processing, the bad installation of sealing gasket; Rapid pipe joint 1 is connected the steel ball 4 of general employing circle with the fixing of pipe coupling 2 in addition, and the surface of contact between the circular groove 21 in steel ball 4 and the pipe coupling 2 is very little, and wearing and tearing make it fix relatively instability of connection easily.

Summary of the invention

The utility model purpose provides a kind of good sealing effect, conveniently makes and connect the rapid pipe joint of firm fluid delivery pipeline.

The utility model adopts following scheme to realize: rapid pipe joint comprises back seat, back sliding sleeve, middle seat, air valve seat, seat is threadedly connected to the back seat inner chamber in described, during being set in, back sliding sleeve is sealed and matched in the seat one end inner chamber and with back seat, wherein said air valve seat is divided into two sections of valve body and preceding sliding sleeves, be provided with sealing gasket between valve body and the preceding sliding sleeve, the valve body flip sleeve is located in the sliding sleeve of back, advancing slip being sheathed in the middle seat the other end inner chamber, be provided with the cavity that is interconnected of conveyance fluid in the valve body, valve body is provided with the annular boss of projection, sealing gasket one end is provided with annular groove and annular boss is sealed and matched, sliding sleeve before the other end of sealing gasket connects, the end face of sealing pad also are tightly connected with the pipe coupling that seat the other end inner chamber therefrom penetrates.

Also be provided with two above slotted eyes on the seat the other end cylndrical surface in described, be provided with oval-shaped steel ball in the slotted eye, steel ball cooperates with circular groove in the pipe coupling rapid pipe joint and pipe coupling fixing is linked together.

The beneficial effects of the utility model are: adopt said structure, air valve seat is divided into two sections of valve body and preceding sliding sleeves, sealing gasket is located between valve body and the preceding sliding sleeve, not only guaranteed the rapid pipe joint favorable sealing property but guarantee repeatedly plug connect rapid pipe joint and pipe coupling after sealing gasket be not easy to be pulled out, and air valve seat is divided into two sections better processing, the fine assembling of sealing gasket; The circular steel ball that will fix the connecting tube joint simultaneously changes oval steel ball into, increases the surface of contact between the circular groove in steel ball and the pipe coupling, makes it be not easy wearing and tearing, improves to fix connection stability.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is further elaborated:

Fig. 1 is the cross-sectional schematic of the rapid pipe joint of prior art;

Fig. 2 is the cross-sectional schematic of the utility model rapid pipe joint;

Fig. 3 is the decomposing schematic representation of the utility model rapid pipe joint;

Fig. 4 is the partial schematic diagram of the oval steel ball structure of the utility model.

Embodiment

Extremely shown in Figure 4 as Fig. 2, the utility model rapid pipe joint 1 comprises back seat 11, back sliding sleeve 12, middle seat 13, air valve seat 14, seat 13 is threadedly connected to back seat 11 inner chambers in described, 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 142 two sections of valve body 141 and preceding sliding sleeves, be provided with sealing gasket 3 between valve body 141 and the preceding sliding sleeve 142, 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 the annular boss 1413 of projection, sealing gasket 3 one ends are provided with annular groove 31 and are sealed and matched with annular boss 1413, sliding sleeve 142 before the other end 32 of sealing gasket 3 connects, the end face 32 of sealing pad 3 also with seat 13 the other end inner chambers 132 therefrom in the pipe coupling 2 that penetrates be tightly connected.

Also be provided with two above slotted eyes 133 on the cylndrical surface of seat 13 the other end inner chambers 132 in described, be provided with oval-shaped steel ball 4 in the slotted eye 133, steel ball 4 cooperates with circular groove 21 in the pipe coupling 2 rapid pipe joint 1 fixed with pipe coupling 2 and links together.

Claims

1. the rapid pipe joint of a fluid delivery pipeline, comprise back seat, back sliding sleeve, middle seat, air valve seat, seat is threadedly connected to the back seat inner chamber in described, during being set in, back sliding sleeve is sealed and matched in the seat one end inner chamber and with back seat, it is characterized in that: described air valve seat is divided into two sections of valve body and preceding sliding sleeves, be provided with sealing gasket between valve body and the preceding sliding sleeve, the valve body flip sleeve is located in the sliding sleeve of back, advancing slip being sheathed in the middle seat the other end inner chamber, be provided with the cavity that is interconnected of conveyance fluid in the valve body, valve body is provided with the annular boss of projection, sealing gasket one end is provided with annular groove and annular boss is sealed and matched, sliding sleeve before the other end of sealing gasket connects, the end face of sealing pad also are tightly connected with the pipe coupling that seat the other end inner chamber therefrom penetrates.

2. the rapid pipe joint of a kind of fluid delivery pipeline according to claim 1, it is characterized in that: also be provided with two above slotted eyes on the seat the other end cylndrical surface in described, be provided with oval-shaped steel ball in the slotted eye, steel ball cooperates with circular groove in the pipe coupling rapid pipe joint and pipe coupling fixed and links together.