CN201344334Y

CN201344334Y - Safety-type quick coupling

Info

Publication number: CN201344334Y
Application number: CNU2008201674143U
Authority: CN
Inventors: 蔡洪明
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-06
Filing date: 2008-11-06
Publication date: 2009-11-11
Anticipated expiration: 2018-11-06

Abstract

The utility model relates to a safety-type quick coupling for transferring high-pressure gases. The quick coupling comprises an external connecter, a sealed casing, an inner core, a valve body and a casing. The utility model is characterized in that two ends of the valve body are respectively and fixedly connected with the external connecter and the inner core; the sealed casing and the casing are sleeved on the valve body and the inner core; the upper end of the sealed casing is in clearance fit with the valve body; the lower side of the sealed casing is in clearance fit with the outer wall of the casing; an isolating layer is arranged in the valve body; an air inlet and an air outlet are respectively formed on the upper and the lower sides of the isolating layer; an isolation sealing ring can correspond to the isolating layer in the valve body; the inner wall of the outer casing can be in clearance fit with the valve body and the inner core; a clamping hole is formed in the inner core; a steel ball is arranged in the clamping hole; an inclined surface is formed on the outer side of the inner core; an inclined surface is also formed on the casing; the inclined surface of the inner core can fit with the inclined surface of the outer casing; a retainer ring, a valve core and a valve-core reset spring are arranged in the inner hole of the inner core; and the retainer ring can be mactched with the inner hole wall of the valve core and the clamping hole. The utility model has the advantages of simple structure, reliable connection, safe operation and the like.

Description

Safety type rapid pipe joint

Technical field

The invention belongs to fluid tranmission techniques field, particularly relate to a kind of safety type rapid pipe joint that transmits pressurized gas.

Background technique

In the prior art, the rapid pipe joint that is used for transferring high voltage gas is mainly by external, shell, inner core and spool constitute, wherein, inner core is fixedlyed connected with external, in inner core, be provided with spool, offer pore and seal groove on the spool, be provided with seal ring in the seal groove, socket is by shell on external and inner core, can match with external in this shell upper end, can match with the flange of inner core bottom in its lower end, inside the shell and be provided with the shell Returnning spring between external, on inner core, offer blocked hole and limited step, steel ball is housed in the blocked hole, and this blocked hole can be corresponding with the groove of shell inboard, and limited step is positioned at the downside of blocked hole, in inner core, be provided with spool successively, buffer ring and movable link stopper, movable link stopper can contact with limited step; The air outlet end of spool is provided with the convex edge, and the upper end of spool is a blind hole, and the inlet hole of spool is arranged on the sidewall of spool, and the inlet hole of spool can match with Sealing shield ring, is provided with valve core reseting spring between Sealing shield ring and spool convex edge; In the time of in off position, pore and Sealing shield ring on the spool sidewall fit, and the seal ring in the seal spool groove matches with Sealing shield ring, play a part to stop the air-flow conducting; And after public access was plugged in inner core, the active force of public access acted on the valve core spring by back-up ring, buffer ring, spool, and valve core spring pressurized back valve core can move to the airflow inlet direction, until spool pore and external inner chamber conducting; Because spool of the prior art and seal ring, back-up ring and public access be directly effect successively, high pressure draught is released public access easily fast, in addition, relatively requires great effort or landing when public access is pegged graft, and brings certain potential safety hazard for user or machinery equipment.

Summary of the invention

The object of the present invention is to provide a kind of simple in structurely, reasonable in design, connect reliable safety type rapid pipe joint.

The objective of the invention is to adopt such technical solution to realize: it comprises external, can, inner core, valve body and shell constitute, it is characterized in that described valve body two ends fixedly connected with inner core with external respectively, be socketed with can and shell on valve body and the inner core, the upper end of can cooperates with valve body is movable, its downside cooperates with outer shell outer wall is movable, in can, be provided with upper end seal ring and isolating seal circle, in valve body, be provided with separation layer, the both sides up and down of separation layer are respectively equipped with inlet hole and air outlet hole, the isolating seal circle can be corresponding with the valve body separation layer, the inwall of described shell can cooperate with valve body and inner core activity, described inner core is provided with blocked hole, be placed with steel ball in the blocked hole, the diameter of blocked hole is greater than the diameter of steel ball, the inner chamber of inner core is made of endoporus and outer hole, outer bore dia is less than diameter of bore, blocked hole is positioned at the endoporus lower end, the outside of inner core is provided with a plane of inclination, also be provided with an inclined-plane in the shell, the plane of inclination of inner core can fit with the inclined-plane of shell, in the endoporus of inner core, be provided with back-up ring, spool and valve core reseting spring, spool is made of pipe and convex edge, Returnning spring is between spool convex edge and valve body separation layer, back-up ring is positioned at the below of spool, and this back-up ring can match with spool inner hole wall and blocked hole.

The present invention compared with prior art, owing to adopt shell, can to cooperate with valve body and inner core activity, blocked hole and steel ball are set in the spool, and the structure that back-up ring, spool and Returnning spring are set at heart, make the present invention when not connecing the public access state, separation layer can be blocked the air-flow conducting under the effect of air pressure; When connecting public access, after striking up partnership, public access and inner core card just can back down separation layer; When separating public access, behind the blocking-up high pressure draught, public access can break away from inner core, thereby, have advantage such as be connected firmly, safe in utilization.

Below in conjunction with drawings and Examples, the invention will be further described.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is a utilization structure schematic representation of the present invention

The drawing reference numeral explanation: 1-is external, 2-first seal ring, the 3-valve body, 4-second seal ring, the 5-can, the 6-inner core, the 7-pipe, the 8-convex edge, the 9-inclined-plane, the 10-shell, the 11-blocked hole, the 12-plane of inclination, the 13-back-up ring, the outer hole of 14-, the 15-endoporus, the 16-steel ball, the 17-buffer ring, 18-the 4th seal ring, 19-shell Returnning spring, 20-the 3rd seal ring, the 21-valve core reseting spring, the 22-inlet hole, the 23-separation layer, the 24-air outlet hole, the 25-buckling groove, the 26-insertion pipe, the 27-public access

Embodiment

With reference to Fig. 1, Fig. 2: the present invention includes external 1, can 5, inner core 6, valve body 3 and shell 10 constitute, fixedly connected with inner core 6 with external 1 respectively in described valve body 3 two ends, be socketed with can 5 and shell 10 on valve body 3 and the inner core 6, inner core 6 can match with shell 10, the upper end of can 5 and 3 movable cooperations of valve body, its lower end and shell 1 socket-connect, certain free gap is arranged between the two, in can 5, be provided with first seal ring 2 and second seal ring 4, in valve body 3, be provided with separation layer 23, the both sides up and down of separation layer 23 are respectively equipped with air outlet hole 24 and inlet hole 22, the inwall of described shell 10 can cooperate with valve body 3 and inner core 6 activities, at shell, be provided with shell Returnning spring 19 between valve body 3 and the inner core 6, described inner core 6 is provided with blocked hole 11, be placed with steel ball 16 in the blocked hole 11, the diameter of blocked hole 11 is greater than the diameter of steel ball 16, the inner chamber of inner core 6 is made of endoporus 15 and outer hole 14, outer hole 14 diameters are less than endoporus 15 diameters, blocked hole 11 is positioned at endoporus 15 lower ends, the outside of inner core 6 is provided with a plane of inclination 12, also be provided with an inclined-plane 9 in the shell 10, the plane of inclination 12 of inner core 6 can fit with the inclined-plane 9 of shell 10, in the endoporus 15 of inner core 6, be provided with back-up ring 13, buffer ring 17, spool 7 and valve core reseting spring 21, the lower end of spool 7 is provided with convex edge 8 and constitutes, valve core reseting spring 7 is between convex edge 8 and valve body separation layer 23, back-up ring 13 is positioned at the below of spool 7, and this back-up ring 13 can match with spool endoporus 15 and blocked hole 11; Back-up ring 13 can be limited in steel ball 16 in the blocked hole 11, and inner core 6 and shell 10 clampings are integral; Be provided with the 4th seal ring 18 between described shell 10 and the inner core 6, between valve body 3 and shell 10, be provided with the 3rd seal ring 20, play a part to stop gas leakage; When the present invention uses, be connected with pressure duct external 1 earlier, at this moment the separation layer 23 of valve body 3 is positioned at second seal ring, 23 positions, and air-flow can't enter inlet hole 22 from air outlet hole 24, and then inner core 6 one sides do not have gas pressure; When to inner core 6 grafting public access 27, the insertion pipe 26 of public access 27 inserts inner core 6, in the grafting process, insertion pipe 26 promotes back-up ring 13 and moves to separation layer 23 places, shell 10 moves down under effect at shell Returnning spring 19, overcome the pressure of valve core reseting spring 21 and high-pressure air when public access 27, the buckling groove 25 that is provided with on public access 27 insertion pipes 26 and blocked hole 11 corresponding matching of inner core 6, at this moment steel ball 16 breaks away from the clamping state of inner core 6 and shell 10, the part of steel ball 16 is arranged in buckling groove 25, then inner core 6 fits with shell 10, simultaneously, public access 27 is by steel ball 16, buckling groove 25, after blocked hole 11 was connected together with inner core 6, pressurized gas are conducting immediately; In the time of need withdrawing from public access 27, can 5 is pulled to shell, like this, second seal ring 4 in the can 5 is between air outlet hole 24 and inlet hole 22, separation layer 23 can be isolated in pressurized gas the top of separation layer 23, and the pressurized gas in the inner core 6 can pass through inlet hole 22, discharge from the gap between can 5 and the shell 10, under stress-free situation, public access 27 can be extracted from inner core 6 very easily.

Advantage of the present invention is as follows:

1 job security: in the process of public access plug, in the situation that does not have the pressure-air effect, advance all the time OK, both safety was again light;

2 work continuitys: in working order lower, pressure-air acts on shell, has guaranteed that shell can not move, Public access can not eject, and has guaranteed the continuity of work, security;

3 work convenience: in the process of public access plug, by inside self-locking structure and the no pressure of snap joint Situation can just truly show one-handed performance;

4 work versatilities: be applicable to that use is Japanese, American, all kinds of snap joints of European public access.

Claims

1, safety type rapid pipe joint, comprise external, can, inner core, valve body and shell constitute, it is characterized in that described valve body two ends fixedly connected with inner core with external respectively, be socketed with can and shell on valve body and the inner core, the upper end of can cooperates with valve body is movable, its downside cooperates with outer shell outer wall is movable, in can, be provided with upper end seal ring and isolating seal circle, in valve body, be provided with separation layer, the both sides up and down of separation layer are respectively equipped with inlet hole and air outlet hole, the isolating seal circle can be corresponding with the valve body separation layer, the inwall of described shell can cooperate with valve body and inner core activity, described inner core is provided with blocked hole, be placed with steel ball in the blocked hole, the diameter of blocked hole is greater than the diameter of steel ball, the inner chamber of inner core is made of endoporus and outer hole, outer bore dia is less than diameter of bore, blocked hole is positioned at the endoporus lower end, the outside of inner core is provided with a plane of inclination, also be provided with an inclined-plane in the shell, the plane of inclination of inner core can fit with the inclined-plane of shell, in the endoporus of inner core, be provided with back-up ring, spool and valve core reseting spring, spool is made of pipe and convex edge, Returnning spring is between spool convex edge and valve body separation layer, back-up ring is positioned at the below of spool, and this back-up ring can match with spool inner hole wall and blocked hole.

2, safety type rapid pipe joint according to claim 1 is characterized in that being provided with between described shell and the inner core the 4th seal ring.

3, safety type rapid pipe joint according to claim 1 is characterized in that being provided with between described valve body and the shell the 3rd seal ring.