CN201836574U

CN201836574U - Improved flat-head quick connector

Info

Publication number: CN201836574U
Application number: CN201020272257XU
Authority: CN
Inventors: 谢贵
Original assignee: CHONGQING YEDONG TECHNOLOGY CO LTD
Current assignee: CHONGQING YEDONG TECHNOLOGY CO LTD
Priority date: 2010-07-27
Filing date: 2010-07-27
Publication date: 2011-05-18
Anticipated expiration: 2020-07-27

Abstract

The utility model discloses an improved flat-head quick connector which comprises a locking ring, a steel ball, a valve core, a locking ring reset ring, a connector body, a connection seat, seal sleeves, star-shaped seal rings, an oil through-hole and a through-hole, wherein the through-hole is communicated with the oil through-hole, the oil through-hole is formed above the through-hole that is used for oil supply, the valve core and the connection seat are integrally formed to form an integral valve core, the outer wall of the integral valve core is in a clearance fit with the inner sealing surfaces of the seal sleeves to achieve the sliding guide function, the star-shaped seal rings are two and include a front star-shaped seal rings and a rear star-shaped seal ring, the front star-shaped seal ring and the rear star-shaped seal ring are arranged between the seal sleeves and the integral valve core and in the position corresponding to the oil through-hole, and a closed space is formed between the two star-shaped seal rings that are arranged on the seal sleeves. The utility model solves the problem of the prior art that the connection bolt is dangerous under high pressure and the valve housing fails to return to the original position during the motion process, and solves the problem of opposite connection of the quick connector under a certain pressure.

Description

A kind of modified model tack quick release coupling

Technical field

The utility model relates to used rapid abutting joint device in gas braking or gas-liquid delivery pipe road and the device, relates in particular to a kind of modified model tack quick release coupling, belongs to the pipe connector technical field.

Background technique

At present, Motor Vehicle in air brake piping or the can car of transfer gas, liquid in can in jar or when draining gas, liquid, all to use rapid abutting joint device, i.e. quick union.Especially traditional its structure of tack quick release coupling of existing quick union is as shown in Figure 1: the quick release coupling of conventional construction comprises locking ring 1, valve core seal ring 2, steel ball 3, guide sleeve 4, spool 5, valve pocket 6, locking ring return circle 7, valve pocket seal ring 8, guide sleeve return spring 9, valve pocket return spring 10, fittings body 11, connecting base 12, connecting bolt 13.Described steel ball 3 locks the effect that 1 pair of connection-peg that enters in this quick release coupling of ring plays locking.In addition, the spool 5 and the connecting base 12 of conventional construction are split type, link together with connecting bolt 13, owing to need the processing oil paths around the connecting base 12, must cause the connecting bolt 13 can not be excessive, high-pressure need be born in quick union inside, therefore, adopt the Placement of connecting bolt 13, have certain risk in its joint.

The motion mode of conventional construction is: after connection-peg inserts from left, overcome the spring force of guide sleeve return spring 9 earlier, promoting guide sleeve 4 moves right, when moving to certain position, be guide sleeve 4 when contacting, also need overcome the spring force of guide sleeve return spring 9 and valve pocket return spring 10, when there is certain pressure in connection-peg inside with valve pocket 6, also need overcome this pressure valve pocket 6 is moved right, thereby valve pocket 6 moves to separate with valve core seal ring 2 and makes oil circuit unimpeded; When joint inside exists pressure big, then butt joint difficulty.After taking out connection-peg, valve kit 6 is got back to original state again with guide sleeve 4 under the active force of valve pocket return spring 10 and guide sleeve return spring 9, thereby plays the effect of sealing.Can see that from accompanying drawing 1 valve pocket 6 inside and outside walls will seal with spool 5 and connecting base 12 respectively, need the sealing surface of processing many, and the Geometrical Tolerance Principle of each component are higher.Owing to the existence of two groups of kinematic pair is arranged, in movement process, catching phenomenon, return difficulty can take place.

The model utility content

At above-mentioned the deficiencies in the prior art part, the purpose of this utility model is: provide a kind of need to overcome low-force, and the easy modified model tack quick release coupling of return, can effectively solve the problem that above-mentioned prior art exists.

To achieve these goals, the technical solution adopted in the utility model is: disclose a kind of modified model tack quick release coupling, it comprises locking ring, steel ball, spool, locking ring return circle, fittings body, connecting base, stuffing box gland, star-like seal ring, oil-through hole and via hole, the oily aperture of described mistake is connected with oil-through hole, and oil-through hole was positioned at oil with on the via hole, described spool and connecting base integral body are processed to form the integrated type spool, the inner sealing surface Spielpassung of the outer wall of described integrated type spool and stuffing box gland, form the slide-and-guide effect, before star-like seal ring is, each one of back, be located between stuffing box gland and the integrated type spool and corresponding with the position of oil-through hole, the stuffing box gland between two star-like seal rings forms an airtight space.

As preferably, stuffing box gland is provided with the stuffing box gland return spring.

Compared with prior art, the beneficial effect that this model utility is brought is: this model utility is simple and reasonable for structure, solved on traditional quick release coupling structure because of be provided with in risk that connecting bolt exists and the movement process not return phenomenon of valve pocket under high pressure, spool in the conventional construction and connecting base are processed as the integrated type spool as a whole, have fundamentally stopped the risk that traditional tack quick release coupling exists because of connecting bolt is little; In addition, the utility model has been cancelled the guide sleeve of traditional jointing, the guiding of whole motion process is finished by the integrated type spool after improving, under off working state, whole pressure forms balance pressure on stuffing box gland, thereby guarantee only need overcome spring force when connection-peg promotes the stuffing box gland motion, and then solved quick release coupling in the butt joint problem that has under the certain pressure situation, butt joint is more prone to.

Description of drawings

Accompanying drawing 1 is the cross-sectional view of traditional quick release coupling;

Accompanying drawing 2 is the cross-sectional view of the utility model quick release coupling.

In the accompanying drawing: the star-like seal ring of 1-locking ring 2-valve core seal ring 3-steel ball 4-guide sleeve 5-spool 6-valve pocket 7-locking ring return circle 8-valve pocket seal ring 9-guide sleeve return spring 10-valve pocket return spring 11-fittings body 12-connecting base 13-connecting bolt 14-stuffing box gland 15-stuffing box gland return spring 16-integrated type spool 17-oil-through hole 18-via hole 19-

Embodiment

Technique scheme of the present utility model and advantage thereof are not difficult to obtain to understand in depth from following selected embodiment's detailed description and accompanying drawing.

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

As shown in Figure 2, as a kind of embodiment of the present utility model, this modified model tack quick release coupling comprises locking ring 1, steel ball 3, spool 5, locking ring return circle 7, fittings body 11, connecting base 12, stuffing box gland 14, oil-through hole 17, via hole 18 and star-like seal ring 19.Described via hole 18 is connected with oil-through hole 17, and described spool 5 is processed to form integrated type spool 16 with connecting base 12 integral body, and the inner sealing surface Spielpassung of the outer wall of described integrated type spool 16 and stuffing box gland 14 forms the slide-and-guide effect.Star-like seal ring 19 is forward and backward each one, is located between stuffing box gland 14 and the integrated type spool 16 and corresponding with the position of oil-through hole 17 airtight space of formation between the forward and backward two star-like seal rings 19 on the stuffing box gland 14.Stuffing box gland 14 is provided with stuffing box gland return spring 15.

In conjunction with the accompanying drawings 1 and the structure and the motion principle of 2 pairs of the utility model quick release couplings of accompanying drawing be described further: spool in traditional quick release coupling 5 and connecting base 12 are processed as integrated type spool 16 as a whole, and cancelled the guide sleeve 4 in traditional quick release coupling, its guidance mode is modified into and relies on the sealing surface leading role of integrated type spool 16 and stuffing box gland 14 to realize.Owing to form an airtight space between the forward and backward two star-like seal rings 19 on the stuffing box gland 14, thereby guarantee that the hydraulic coupling on stuffing box gland 14 is in a kind of state of equilibrium, when connection-peg promotion stuffing box gland 14 moves right, only need overcome the spring force of stuffing box gland return spring 15, can realize finishing the guiding of whole motion process by integrated type spool 16.Specifically, after connection-peg inserted from left, locking ring 1 and the steel ball 3 that is positioned at locking ring 1 inboard can be locked connection-peg, form certain pressure.Stuffing box gland 14 moves right under the effect of the power of connection-peg, because the laterally steering effect that the outer wall of integrated type spool 16 is play stuffing box gland 14, star-like seal ring 19 on the stuffing box gland 14 also moves thereupon, when star-like seal ring 19 is crossed oil-through hole 17, because oil-through hole 17 is connected with via hole 18, thereby makes that whole oil circuit is unimpeded.When withdrawing from connection-peg, stuffing box gland 14 is got back to original state under the effect of stuffing box gland return spring 15, and oil circuit is closed.Locking ring return spring 7 can make locking ring 1 return fast when withdrawing.Compare with conventional construction, it is simpler that this improves structure, the component motion flexibly, under off working state, whole pressure forms balance pressure on stuffing box gland 14, thereby guarantee only need overcome spring force when connection-peg promotes stuffing box gland 14 motions, and then solved quick release coupling, make butt joint be more prone in the butt joint problem that has under the certain pressure situation.

The above only is the detailed description of the utility model preferred embodiment and graphic, is not to be used for limiting the utility model, and the embodiment or the approximate construction of all similar variations of doing according to creation spirit of the present utility model all should be contained among the utility model.

Claims

1. modified model tack quick release coupling, comprise locking ring (1), steel ball (3), spool (5), locking ring return circle (7), fittings body (11), connecting base (12), oil-through hole (17) and via hole (18), described oil-through hole (17) is connected with via hole (18), it is characterized in that: also comprise stuffing box gland (14) and star-like seal ring (19), described spool (5) is processed to form integrated type spool (16) with connecting base (12) integral body, the inner sealing surface Spielpassung of the outer wall of described integrated type spool (16) and stuffing box gland (14), form the slide-and-guide effect, before star-like seal ring (19) is, each one of back, be located between stuffing box gland (14) and the integrated type spool (16) and corresponding, form an airtight space at stuffing box gland (14) between two star-like seal rings (19) with the position of oil-through hole (17).

2. a kind of modified model tack quick release coupling according to claim 1, it is characterized in that: stuffing box gland (14) is provided with stuffing box gland return spring (15).