CN206958449U - Quick coupler - Google Patents

Abstract

It the utility model is related to a kind of attachment means of fast assembling-disassembling, especially quick coupler.Quick coupler, including public plug and mother socket, public plug includes plug, plug inwall extends internally out gear mouth, plug bushing is provided with gear mouth, plug valve rod is cased with plug bushing, plug valve rod rear portion is set on plug valve seat, plug valve element valve pocket is arranged with plug valve rod front end, plug valve element inner ring bar is arranged with plug valve element valve pocket, mother socket includes housing, rear sleeve is provided with housing valve pocket in the housing, overcoat is arranged with outside housing and shell joint body front portion, front portion is arranged with case bushing seat in housing valve pocket, case bushing is arranged with case bushing seat, case bushing inner ring is arranged with case bushing, housing valve seat is provided with case bushing inner ring.Usefulness of the present utility model：Designed with loop, pressure source can not shutdown operation, public plug is directly inserted into mother socket, is attached and disconnects, can self pressure release, proof pressure is high.

Description

Quick coupler

Technical field

It the utility model is related to a kind of attachment means of fast assembling-disassembling, especially quick coupler.

Background technology

Snap joint includes hydraulic quick coupling and various fluid quick joints, and it is a kind of quick connection or off-tube Road, realize the attachment means of fast assembling-disassembling.Because there is dual check function pipeline to disconnect No leakage for snap joint, therefore in stone Oil, metallurgy, water power, engineering machinery, ship, electromechanical equipment etc. are widely used in field.Connecting structure for quick coupling is The most important part of snap joint, its connected mode and structure directly determine the ease of use of snap joint, reliability And product quality.Snap joint is made up of public plug and mother socket two parts, and public plug and mother socket include valve arrangement, common Valve arrangement is more simple, and plug valve element and housing valve element push opening runner, and runner can not simply form the loop of circulation, run into Special circumstances, it can not also complete not shutdown operation, it is therefore desirable to rational valve arrangement, it is ensured that smooth butt joint when switching on and off Inner structure has no adverse effects, and avoids damaging joint.

Utility model content

In order to solve the technical problem in the above-mentioned loop that can not be completed not shutdown operation and can not form circulation, this practicality is new Type provides quick coupler.

The technical solution of the utility model is as follows：

Quick coupler, including public plug and mother socket, public plug include plug, plug valve rod, plug valve element inner ring Bar and plug valve element valve pocket, the plug connector rear are provided with plug connector body, plug head hollow out, and plug inwall extends internally out gear Mouthful, keep off at mouth and be provided with plug bushing, space is left between plug bushing rear portion and plug inwall, plug valve is cased with plug bushing Bar, plug bushing spring, plug bushing and plug valve rod smooth engagement, plug are provided between plug bushing and plug valve rod rear portion Valve rod rear portion is set on plug valve seat, and plug valve element valve pocket is arranged with plug valve rod front end, is arranged in plug valve element valve pocket There is plug valve element inner ring bar, plug valve core spring is provided between plug valve element inner ring bar and plug valve seat, plug head outer wall is recessed Fall into and be provided with helicla flute, plug connector body forward, central part inwall is provided with runner hole, and the back side is provided with two horizontal installing ports, plug valve Seat rear portion contacts with runner hole front inner wall, and an installing port connects with runner hole, and another installing port leads to plug connector body Wall angle, plug valve seat is hollow, and mother socket includes housing, housing valve pocket and housing valve seat, and rear sleeve is provided with shell in the housing Body valve pocket, housing valve pocket rear sleeve are provided with shell joint body, overcoat, housing valve pocket are arranged with outside housing and shell joint body front portion Interior front portion is arranged with case bushing seat, and housing valve pocket spring, case bushing are provided between case bushing seat and housing valve pocket rear portion Case bushing is arranged with seat, case bushing inner ring is arranged with case bushing, housing valve seat, shell are provided with case bushing inner ring Body valve seat is anterior and middle part is provided with through hole, and anterior through hole is sheltered from by case bushing inner ring, and housing valve seat rear portion outer wall projection is set There is a through hole C, shell joint body forward, central part inwall is provided with runner hole, and the back side is provided with two horizontal installing ports, after housing valve seat Portion contacts with runner hole front inner wall, and an installing port connects with runner hole, and another installing port leads to wall in shell joint body Angle, connected with through hole C, housing valve seat open rearward end forms runner, before runner extends to housing valve seat front portion through hole.

The housing valve pocket is anterior the utensil receiving opening for accommodating plug head annular mouth between housing, and inner walls are inwardly prolonged Stretch out the dop coordinated with helicla flute.

Housing is cased with outside the housing valve pocket, housing steel ball, the housing and overcoat are provided between housing valve pocket and housing Connected by casing bolts, overcoat rear portion contacts with shell joint body.

The housing valve seat, housing valve seat include annular solid A and annular solid B, and annular solid A and annular solid B are formed in one, For annular solid A preceding, the annular solid A external diameters are less than annular solid B external diameters, and annular solid A front ends are provided with projection, and convex surfaces are smooth, Annular solid A is longitudinally through provided with through hole A and through hole B, and through hole A is located in front of through hole B, annular solid B rear portions outer wall outwardly convex shape Into torus A, torus A is horizontal through through hole C is provided with, and annular solid B open rearward ends form runner, and runner extends to annular solid A Front portion, runner are runner A, runner B, runner C successively from front to back, and through hole A is located at runner A, and through hole B is located at runner B, runner C In annular solid B.

The length of the through hole A and through hole B are less than annular solid A external diameters, and through hole A and through hole B outer walls both sides are horizontally disposed with, water Flat to sentence inclined-plane and be connected with annular solid A outer walls, annular solid A is connected with annular solid B junctions with inclined-plane, the raised cross section To be trapezoidal, annular solid B rear ends are provided with curve slope, and the through hole C is distributed with even circumferential, and runner internal diameter is runner from small to large A, runner B, runner C.

The housing valve pocket, housing valve pocket front end are provided with annular solid C, and housing valve pocket rear end inwall outwards is recessed to form card Groove, housing valve pocket rear and front end opening, housing valve pocket inner hollow form passage B, and the housing valve pocket front inner wall is inwardly prolonged Stretch to form bayonet socket B.

The annular solid C rear portions outer wall outwardly convex forms annular solid D, and annular solid D front ends are provided with groove, the groove type Shape is circle, and slot opening direction is housing valve pocket front portion direction, and annular solid D outer walls middle part outwardly convex forms bulge loop, described The cross section of bulge loop is trapezoidal, and bulge loop front portion is provided with step body, and the passage B front portions internal diameter is less than passage B rear portions internal diameter, neck It is horizontally disposed that inwall between bayonet socket B, which has three sections, and internal diameter is from big to small.

The plug valve rod includes annular solid E and annular solid F, and annular solid E and annular solid F are formed in one, after annular solid F Outer wall outwardly convex is held to form torus B, torus B levels, which run through, through hole D, plug valve rod rear and front end opening, plug valve Bar inner hollow forms passage A, and the annular solid E front inner walls extend inwardly to form bayonet socket A.

The corner recess of torus B front ends outer wall one, it is horizontally disposed that the inwall on the inside of bayonet socket A, which has two sections, and radius is from small To big, length is from being short to length.

Plug valve rod inner ring is arranged with the plug valve rod, plug valve element valve pocket is arranged with plug valve rod inner ring, is inserted Hole is provided with the middle part of head valve bar inner ring, space is left between plug valve element inner ring bar rear portion and plug valve rod inner ring.

Using the technical solution of the utility model, the design of new type of valve, the impact of high-velocity fluid and pulse can be resisted, Higher performance is provided；Fabricated using single solid steel bar, so durability is good；Snap joint designs with loop, pressure Source can not shutdown operation, public plug is directly inserted into mother socket, is attached and disconnects, can self pressure release, proof pressure is high, right Joint inner structure has no adverse effects, and avoids damaging joint；The supporting connection design of dop and helicla flute, connection is firm, consolidates resistance to With；Novel flow channel designs, and operating pressure runner is resistant to 70MPa high pressures, and medium loop runner is resistant to 10MPa pressure.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the structural representation of the utility model mother socket；

Fig. 3 is the structural representation of the utility model public plug；

Fig. 4,5 be the utility model housing valve seat structural representation；

Fig. 6,7 be the utility model plug valve rod structural representation；

Fig. 8,9 be the utility model housing valve pocket structural representation.

Embodiment

The utility model is described in further detail with reference to the accompanying drawings and examples.

Embodiment

Quick coupler as shown in Fig. 1,2,3,4,5,6,7,8,9, including public plug and mother socket, public plug include Plug 1, plug valve rod 3, plug valve element inner ring bar 5 and plug valve element valve pocket 6, the rear portion of plug 1 are provided with plug connector body 11, Plug 1 is connected with plug connector body 11 by screw thread, and adds fluid sealant, and stable connection is durable in use, the outer wall of plug 1 Plug connector body O-ring 18 is provided between rear portion and plug connector body 11, for improving between plug 1 and plug connector body 11 Sealing, and medium loop runner is sealed, the front end hollow out of plug 1, the outer wall of plug 1 is provided with plug O-ring A14, plug 1 inwall front portion is equipped with plug O-ring B20 and plug King 21, for the inwall of sealing plug 1 and shell after the insertion of plug 1 The outer wall of body valve pocket 27, the inwall of plug 1 are extended internally out gear mouth, keep off at mouth and are provided with plug bushing 2, and the front of plug bushing 2, which is provided with, to be served as a contrast Pad is covered, bushing pad is axially through there are multiple runner mouths, and for connecting medium loop runner, the outer wall of plug bushing 2 is provided with oblique Face is in close contact with the inwall of plug 1, and plug bushing O-ring A15 is housed, lift-off seal effect, on the back interior wall of plug bushing 2 Provided with plug bushing O-ring B16, strengthen sealing when being not inserted into for public plug, keep air-tightness, the rear portion of plug bushing 2 with Leave space between the inwall of plug 1, form a medium loop runner after public plug insertion, plug bushing 2 and the rear portion of plug 1 it Between be provided with plug bushing spring 12, be cased with plug valve rod 3 in plug bushing 2, set between plug bushing 2 and the rear portion of plug valve rod 3 There are plug bushing spring 12, plug bushing 2 and the smooth engagement of plug valve rod 3, action is smooth naturally, the rear portion of plug valve rod 3 is with inserting First 1 rear portion is fixedly connected, and the rear portion of plug valve rod 3 is axially through with multiple through hole C43, connects medium loop runner and public plug T runners, the rear portion of plug valve rod 3 are set on plug valve seat 10, and plug valve rod 3 is connected with plug valve seat 10 using hard encapsulation process Connect, stable connection, good airproof performance, plug valve seat O-ring 19 be equipped between the back interior wall of plug valve rod 3 and plug valve seat 10, The sealing between plug valve rod 3 and plug valve seat 10 is improved, plug valve element valve pocket 6, plug are arranged with the front end of plug valve rod 3 The outer wall front portion of valve element valve pocket 6 is arranged with plug valve element King 8 and plug valve element plastic spacer 9, in the rear portion of plug valve element valve pocket 6 Wall is provided with plug valve core housing sealing ring 7, and plug valve element plastics O-ring 17, plug valve element are arranged with outside plug valve element plastic spacer 9 King 8 and the outer wall of plug valve element plastics O-ring 17 and the inwall front contact of plug valve rod 3, before public plug insertion, for sealing Operating pressure runner in public plug, after public plug insertion, for improving the sealing between plug valve rod 3 and housing valve seat 29 Property, and then sealed operating pressure runner, plug valve element inner ring bar 5, plug valve element inner ring bar 5 are arranged with plug valve element valve pocket 6 Rear portion longitudinal cross-section is triangle, and chamfered edge processing is longitudinally done in Atria bar side position, and with the work pressure in plug valve seat 10 Power runner penetrates, and leaves space between the rear portion of plug valve element inner ring bar 5 and plug valve rod inner ring 4, inside plug valve element inner ring bar 5 Insertion, forms the operating pressure runner of insertion after public plug insertion, be provided with and insert between plug valve element inner ring bar 5 and plug valve seat 10 Head spool spring 13, the front end outer wall depression of plug 1 are provided with helicla flute, and the forward, central part inwall of plug connector body 11 is provided with runner hole, The back side is provided with two horizontal installing ports, and the rear portion of plug valve seat 10 contacts with runner hole front inner wall, an installing port and runner Hole connects, and another installing port leads to the wall angle of plug connector body 11, and plug valve seat 10 is hollow, and one is located at middle part, another Positioned at sidepiece, sidepiece is to be able to complete backflow, and mother socket includes housing 22, housing valve pocket 27 and housing valve seat 29, described Rear sleeve is provided with housing valve pocket 27 in housing 22, and the rear sleeve of housing valve pocket 27 is provided with shell joint body 31, housing valve pocket 27 and shell Body fittings body 31 is connected by screw thread, and adds fluid sealant, and stable connection is durable in use, the outer wall of housing valve pocket 27 and shell Housing valve element O-ring 34 is provided between body fittings body 31 and the inwall of housing 22, is arranged outside housing 22 and the front portion of shell joint body 31 There is overcoat 23, shell joint body O-ring 35 is provided between the external rear wall of housing valve pocket 27 and shell joint body 31, for improving shell Sealing between body valve pocket 27 and shell joint body 31, and medium loop runner is sealed, housing 22 and shell joint Body 31 it is anterior it is outer is arranged with overcoat 23, there is certain protective effect to housing 22 and shell joint body 31, before housing valve pocket 27 Portion's depression has multiple grooves, and groove horizontal level is located between the front portion of housing valve pocket 27 and housing 22, during assembly and disassembly Impetus is provided for rotation housing valve pocket 27, front portion is arranged with case bushing seat 25 in housing valve pocket 27, and case bushing seat 25 is Rear cross-sectional is the U-shaped body at right angle, and right angle is easily installed housing valve pocket spring 28, and the outer wall of case bushing seat 25 is provided with spacing Block, housing valve pocket spring 28 is provided between case bushing seat 25 and the rear portion of housing valve pocket 27, shell is arranged with case bushing seat 25 Body bushing 24, case bushing 24 are to face outwardly vertically, and middle inside is provided with flange collar, and the back interior wall of case bushing seat 25 serves as a contrast with housing Case bushing O-ring A36, the inwall of case bushing seat 25 and the inwall of housing valve pocket 27 and the outer wall of case bushing 24 are provided between set 24 Between be provided with case bushing O-ring B37, be case bushing O-ring A36 and case bushing O-ring B37 on the outside of flange collar, public plug The medium loop runner in mother socket is sealed before insertion, to improving the medium loop stream in mother socket after public plug insertion The sealing in road, prevent medium from entering between case bushing seat 25 and case bushing 24, improve case bushing seat 25 and served as a contrast with housing The sealing between 24 is covered, being arranged with case bushing 24 on the inside of case bushing inner ring 26, that is, flange collar has in case bushing Circle 26, there are housing valve element King 40 and housing valve element plastic spacer 39, housing valve element King in the both sides of case bushing inner ring 26 40 recess are provided with housing valve element plastics O-ring 38, case bushing inner ring 26, housing valve element King 40 and housing valve element plastics Pad 39 is applied in combination, and the opening and closing of 29 anterior through hole of housing valve seat and middle through-hole, portion are determined by anterior-posterior translation Part decomposes that manufacture is convenient, and performance can be guaranteed, and is provided with housing valve seat 29 in case bushing inner ring 26, after housing valve seat 29 Portion is fixedly connected with the rear portion of housing valve pocket 27, and the rear portion of housing valve seat 29 is axially through with multiple through holes, connects medium loop runner With the T interfaces of mother socket, housing valve seat 29 is anterior and middle part is provided with through hole, and anterior through hole is sheltered from by case bushing inner ring 26, The front and rear sliding of case bushing inner ring 26 determines anterior and middle through-hole break-make, and the rear portion outer wall of housing valve seat 29 is raised to be provided with through hole C43, the forward, central part inwall of shell joint body 31 are provided with runner hole, and the back side is provided with two horizontal installing ports, after housing valve seat 29 Portion is contacted with runner hole front inner wall, and an installing port is connected with runner hole, and another installing port is led in shell joint body 31 Wall angle, connected with through hole C43, the open rearward end of housing valve seat 29 forms runner, before runner extends to 29 anterior through hole of housing valve seat. Middle through-hole and medium loop flow passage when public plug is not inserted into, for medium back flow, when mother socket is connected with public plug, in Portion's through hole is sheltered from by case bushing inner ring 26, and anterior through hole is opened, and operating pressure runner is got through, the rear portion of housing valve seat 29 and shell Space is left between body valve pocket 27, forms medium loop runner.

The housing valve pocket 27 is anterior a utensil receiving opening for accommodating the front end annular mouth of plug 1 between housing 22, in housing 22 The dop 32 that wall extends internally out with helicla flute cooperation.

Housing 22 is cased with outside the housing valve pocket 27, housing steel ball 30 is provided between housing valve pocket 27 and housing 22, it is described Housing 22 is connected with overcoat 23 by casing bolts 33, and the rear portion of overcoat 23 is contacted with shell joint body 31, and stable connection, assembling is torn open Unload conveniently, for reducing frictional force when public plug inserts between housing 22 and housing valve pocket 27 so that be rotatably inserted into action more Add it is smooth, it is not jerky.

The housing valve seat 29 includes annular solid A46 and annular solid B47, and annular solid A46 and annular solid B47 are integrated into Type, for annular solid A46 preceding, the annular solid A46 external diameters are less than annular solid B47 external diameters, and annular solid A46 front ends are provided with projection 42, Raised 42 surfacings, longitudinally through provided with through hole A44 and through hole B45, through hole A44 is located in front of through hole B45 annular solid A46, Annular solid B47 rear portions outer wall outwardly convex forms torus A, and torus A levels, which run through, is provided with through hole C43, torus A and neck 53 contacts, and through hole C43 inwalls are not less than annular solid D55 inwalls, avoid media impingement from wearing, annular solid B47 open rearward end shapes Into runner, runner extends to annular solid A front portions, and runner is runner A41, runner B48, runner C49 successively from front to back, through hole A44 is located at runner A41, and through hole B45 is located at runner B48, and runner C49 is located in annular solid B47.Before through hole A44 is located at runner A41 Portion, through hole B45 are located at runner B48 front portions.It can complete back

Stream and not shutdown operation, public plug and mother socket are required for corresponding valve arrangement, and housing valve seat 29 is not only mother Socket intermediary

The logical critical piece of mass flow, and the not critical piece of shutdown operation, it is the part that backflow needs to pass through, it is also true Protect backflow

Runner is unobstructed, and the inwall of housing valve pocket 27 and the outer wall of housing valve seat 29 have gap, is easy to backflow to use.

The length of the through hole A44 and through hole B45 are less than annular solid A46 external diameters, through hole A44 and through hole B45 outer walls both sides Horizontally disposed, level is sentenced inclined-plane and is connected with annular solid A46 outer walls, and annular solid A46 and annular solid B47 junctions are connected with inclined-plane Connect, raised 42 cross section is trapezoidal, and annular solid B47 rear ends are provided with curve slope, and the through hole C43 is with even circumferential point Cloth runner internal diameter is runner A41, runner B48, runner C49 from small to large.Runner A41 flows are small, are because through hole A44 passes through stream Thickness that is limited, and also ensureing inwall herein is measured, namely intensity is big greatly for thickness, can use for a long time.

The housing valve pocket 27, the front end of housing valve pocket 27 are provided with annular solid C54, and the rear end inwall of housing valve pocket 27 is outwards recessed Neck 53, the rear and front end opening of housing valve pocket 27 are formed, the inner hollow of housing valve pocket 27 forms passage B50, the housing valve pocket 27 front inner walls extend inwardly to form bayonet socket B52.Housing valve pocket 27 is not only used to fixed shell valve seat 29, also

Ensure that the runner of backflow is unobstructed, the inwall of housing valve pocket 27 and the outer wall of housing valve seat 29 have gap, are easy to backflow to use.

The annular solid C54 rear portions outer wall outwardly convex forms annular solid D55, and annular solid D55 front ends are provided with groove 56, institute State groove 56 and be shaped as circle, the opening direction of groove 56 is 27 anterior direction of housing valve pocket, convex in the middle part of annular solid D55 outer walls Rise and form bulge loop 51, the cross section of the bulge loop 51 is trapezoidal, and bulge loop 51 is anterior to be provided with step body, in the passage B50 front portions Footpath is less than passage B50 rear portions internal diameter, and it is horizontally disposed that the inwall between neck 53 and bayonet socket B52, which has three sections, and internal diameter is from big to small.

The plug valve rod 3 includes annular solid E60 and annular solid F61, and annular solid E60 and annular solid F61 are formed in one, Annular solid F61 rear ends outer wall outwardly convex forms torus B, and torus B levels, which run through, through hole D59, two before and after plug valve rod 3 End opening, the inner hollow of plug valve rod 3 form passage A57, and the annular solid E60 front inner walls extend inwardly to form bayonet socket A58. The inwall of plug 1 is provided with the breach to clamping rings body B, and installation is firm.Plug valve rod 3 is not only flow of media in public plug Critical piece, and the part that backflow needs pass through, mainly have gap by through hole D59, plug 1 and the outer wall of plug valve rod 3, It is easy to backflow to use.

The corner recess of torus B front ends outer wall one, the inwall on the inside of bayonet socket A58 have two sections be it is horizontally disposed, radius from It is small to big, length is from being short to length.

Plug valve rod inner ring 4 is arranged with the plug valve rod 3, plug valve element valve pocket is arranged with plug valve rod inner ring 4 6, the middle part of plug valve rod inner ring 4 is provided with hole, and front inner wall has inclined-plane, and rear portion is smooth, increases width of flow path, also acts as to front portion Position-limiting action, space is left between the rear portion of plug valve element inner ring bar 5 and plug valve rod inner ring 4.

In use, in the 27 anterior utensil receiving opening between housing 22 of the axial-rotation of plug 1 insertion housing valve pocket, dop 32 is inserted Enter in helicla flute, the front portion of housing valve pocket 27 is inserted into the space between plug 1 and plug valve rod 3, shifts plug bushing 2 onto plug 1 rear portion, plug bushing spring 12 are compressed, and plug valve rod 3 is inserted into the space between housing valve pocket 27 and housing valve seat 29, will The related case bushing seat 25 of case bushing 24 and case bushing inner ring 26 shift the rear portion of housing valve pocket 27, the quilt of housing valve pocket spring 28 onto Compression, now medium loop runner is got through, meanwhile, housing valve seat 29 is inserted into plug valve rod 3, by the He of plug valve element valve pocket 6 Plug valve element inner ring bar 5 shifts the rear portion of plug valve element inner ring 4 onto, and plug valve core spring 13 is compressed, moved after case bushing inner ring 26, The through hole A44 of housing valve seat 29 is opened, and through hole B45 is blocked, and is produced between plug valve element valve pocket 6 and plug valve element inner ring 4 Raw gap is connected with the through hole A44 of housing valve seat 29, and now operating pressure runner is got through, when exiting, case bushing inner ring 26 Reach, the through hole A44 of housing valve seat 29 are blocked, and through hole B45 is opened, and residual medium is back to medium by through hole B45 Loop runner, reach the purpose of self pressure release.P runners are operating pressure runner, are resistant to 70MPa high pressures, and T runners are medium loop Runner, is resistant to 10MPa pressure, and female joint designs under logical pressure condition with loop, pressure source can not shutdown operation, now Pressure medium enters from mother socket P ends, is flowed out, passed through from the through hole B45 of housing valve seat 29 by the inner flow passage of housing valve seat 29 Space between housing valve seat 29 and housing valve pocket 27, mother socket T ends are back to, public plug is used for connection pressure instrument, insertion Preceding obstructed pressure；Under male and female off-state, male and female joint two-port P and T connect circulation pipe fitting respectively.If public plug inserts, with The distance of the stroke of plug 1, public plug P ends and T ends are opened, and mother socket P ends disconnect straight-through mother socket T ends, and pressure is from mother socket P Public plug P ends are passed through at end, and are back to mother socket T ends from public plug T ends.

It should be appreciated that the foregoing is only preferred embodiment of the present utility model, it e insufficient to limit this reality With new technical scheme, for those of ordinary skills, within the spirit and principles of the utility model, Ke Yigen Increased and decreased according to described above, replaced, converted or improved, and the technical side after all these increases and decreases, replacement, conversion or improvement Case, it should all belong to the protection domain of the appended claims for the utility model.

Claims (10)

1. quick coupler, including public plug and mother socket, it is characterised in that：Public plug includes plug（1）, plug valve rod （3）, plug valve element inner ring bar（5）With plug valve element valve pocket（6）, the plug（1）Rear portion is provided with plug connector body（11）, plug （1）Front end hollow out, plug（1）Inwall extends internally out gear mouth, keeps off at mouth and is provided with plug bushing（2）, plug bushing（2）Rear portion with Plug（1）Space, plug bushing are left between inwall（2）In be cased with plug valve rod（3）, plug bushing（2）With plug valve rod（3） Plug bushing spring is provided between rear portion（12）, plug bushing（2）With plug valve rod（3）Smooth engagement, plug valve rod（3）Rear portion It is set in plug valve seat（10）On, plug valve rod（3）Plug valve element valve pocket is arranged with front end（6）, plug valve element valve pocket（6）It is interior It is arranged with plug valve element inner ring bar（5）, plug valve element inner ring bar（5）With plug valve seat（10）Between be provided with plug valve core spring （13）, plug（1）Front end outer wall depression is provided with helicla flute, plug connector body（11）Forward, central part inwall is provided with runner hole, the back side Provided with two horizontal installing ports, plug valve seat（10）Rear portion contacts with runner hole front inner wall, an installing port and runner hole Connection, another installing port lead to plug connector body（11）Wall angle, plug valve seat（10）Hollow, mother socket includes housing （22）, housing valve pocket（27）With housing valve seat（29）, the housing（22）Interior rear sleeve is provided with housing valve pocket（27）, housing valve pocket （27）Rear sleeve is provided with shell joint body（31）, housing（22）With shell joint body（31）Overcoat is arranged with outside anterior（23）, shell Body valve pocket（27）Interior front portion is arranged with case bushing seat（25）, case bushing seat（25）With housing valve pocket（27）It is provided between rear portion Housing valve pocket spring（28）, case bushing seat（25）Inside it is arranged with case bushing（24）, case bushing（24）Inside it is arranged with housing Bushing inner ring（26）, case bushing inner ring（26）It is interior to be provided with housing valve seat（29）, housing valve seat（29）Anterior and middle part is provided with logical Hole, anterior through hole is by case bushing inner ring（26）Shelter from, case bushing inner ring（26）Front and rear sliding determines that anterior and middle part leads to The break-make in hole, housing valve seat（29）Rear portion outer wall is raised to be provided with through hole C（43）, shell joint body（31）Forward, central part inwall is provided with Runner hole, the back side are provided with two horizontal installing ports, housing valve seat（29）Rear portion contacts with runner hole front inner wall, an installation Mouth connects with runner hole, and another installing port leads to shell joint body（31）Wall angle, with through hole C（43）Connection, housing valve seat （29）Open rearward end forms runner, and runner extends to housing valve seat（29）Before anterior through hole.

2. quick coupler according to claim 1, it is characterised in that：The housing valve pocket（27）Anterior and housing （22）Between have receiving plug（1）The utensil receiving opening of front end annular mouth, housing（22）Inwall extends internally out what is coordinated with helicla flute Dop（32）.

3. quick coupler according to claim 1, it is characterised in that：The housing valve pocket（27）It is cased with housing outside （22）, housing valve pocket（27）With housing（22）Between be provided with housing steel ball（30）, the housing（22）With overcoat（23）Pass through shell Body bolt（33）Connection, overcoat（23）Rear portion and shell joint body（31）Contact.

4. quick coupler according to claim 1, it is characterised in that：The housing valve seat（29）Including annular solid A （46）With annular solid B（47）, annular solid A（46）With annular solid B（47）It is formed in one, annular solid A（46）In preceding, the annular Body A（46）External diameter is less than annular solid B（47）External diameter, annular solid A（46）Front end is provided with projection（42）, it is raised（42）Surfacing, Annular solid A（46）Longitudinally through provided with through hole A（44）With through hole B（45）, through hole A（44）Positioned at through hole B（45）Front, annular solid B（47）Rear portion outer wall outwardly convex forms torus A, and torus A levels, which run through, is provided with through hole C（43）, annular solid B（47）Rear end Opening forms runner, and runner extends to annular solid A（46）Front portion, runner are runner A successively from front to back（41）, runner B（48）、 Runner C（49）, through hole A（44）Positioned at runner A（41）, through hole B（45）Positioned at runner B（48）, runner C（49）Positioned at annular solid B （47）It is interior.

5. quick coupler according to claim 4, it is characterised in that：The through hole A（44）With through hole B（45）Length Degree is less than annular solid A（46）External diameter, through hole A（44）With through hole B（45）Outer wall both sides are horizontally disposed with, and level sentences inclined-plane and annular Body A（46）Outer wall connects, annular solid A（46）With annular solid B（47）Junction is connected with inclined-plane, the projection（42）Cross section To be trapezoidal, annular solid B（47）Rear end is provided with curve slope, the through hole C（43）Be distributed with even circumferential, runner internal diameter from it is small to It is runner A greatly（41）, runner B（48）, runner C（49）.

6. quick coupler according to claim 1, it is characterised in that：The housing valve pocket（27）, housing valve pocket （27）Front end is provided with annular solid C（54）, housing valve pocket（27）Outwards depression forms neck to rear end inwall（53）, housing valve pocket（27） Rear and front end opening, housing valve pocket（27）Inner hollow forms passage B（50）, the housing valve pocket（27）Front inner wall is inwardly prolonged Stretch to form bayonet socket B（52）.

7. quick coupler according to claim 6, it is characterised in that：The annular solid C（54）Rear portion outer wall is outside Convex to form annular solid D（55）, annular solid D（55）Front end is provided with groove（56）, the groove（56）It is shaped as circle, groove （56）Opening direction is housing valve pocket（27）Anterior direction, annular solid D（55）Outwardly convex forms bulge loop in the middle part of outer wall（51）, institute State bulge loop（51）Cross section be trapezoidal, bulge loop（51）Front portion is provided with step body, the passage B（50）Anterior internal diameter is less than passage B（50）Rear portion internal diameter, neck（53）With bayonet socket B（52）Between inwall to have three sections be horizontally disposed, internal diameter is from big to small.

8. quick coupler according to claim 1, it is characterised in that：The plug valve rod（3）Including annular solid E （60）With annular solid F（61）, annular solid E（60）With annular solid F（61）It is formed in one, annular solid F（61）Rear end outer wall is outside Torus B is convexed to form, torus B levels, which run through, through hole D（59）, plug valve rod（3）Rear and front end opening, plug valve rod （3）Inner hollow forms passage A（57）, the annular solid E（60）Front inner wall extends inwardly to form bayonet socket A（58）.

9. quick coupler according to claim 8, it is characterised in that：The corner recess of torus B front ends outer wall one, Bayonet socket A（58）It is horizontally disposed that the inwall of inner side, which has two sections, and from small to large, length is from being short to length for radius.

10. quick coupler according to claim 1, it is characterised in that：The plug valve rod（3）Inside it is arranged with plug Valve rod inner ring（4）, plug valve rod inner ring（4）Inside it is arranged with plug valve element valve pocket（6）, plug valve rod inner ring（4）Middle part is provided with hole, Plug valve element inner ring bar（5）Rear portion and plug valve rod inner ring（4）Between leave space.