The fluid quick joint of band button latch
Technical field
The present invention relates to a kind of joint of fluid circuit, be meant a kind of joint that can make pipeline connect fast, disconnect fast specifically.
Background technique
The fluid quick joint of band button latch has check function owing to energy fast insert-pull, unidirectional blocking, therefore at oil, chemical industry, metallurgy, water power, engineering machinery, boats and ships, obtains using very widely in the fields such as electromechanical equipment.The fluid quick joint of existing band button latch is made up of socket and plug two-part, at one group of steel ball of socket circumference uniform distribution, plug body is provided with locking slot, steel ball can slip in the locking slot of plug body when plug body stretches into socket, and with overcoat steel ball is locked, just pipeline can be connected.After unclamping overcoat, the pulling plug body makes steel ball skid off locking slot and makes the pipeline disconnection.The complicated volume of this product structure is big, manufacture cost is high, must move simultaneously by both hands during operation, requires installing space big, influences the using effect and the usability of rapid pipe joint.The notice of authorization of Patent Office of the People's Republic of China's disclosed mandate on the 26th November in 2008 number is " self locking quick connector " of " CN201155643Y ", it includes hexagonal part and the round valve core that cross-drilled hole is arranged of a hollow, by the integral connector body that is threaded, fittings body inside by after be coaxially arranged with spring forward successively, the joint core body, two O RunddichtringOs, self-locking inner shield ring, fittings body outer installment have the outer back-up ring of self-locking, spring, steel ball, expanding ring, when male is inserted, the compression of fittings body inner spring, the joint core body, two O RunddichtringOs and self-locking inner shield ring axially move in the past backward simultaneously, under the effect of fittings body external springs, the outer back-up ring of self-locking moves forward to the expanding ring place, and the little internal diameter of its step blocks steel ball, thereby block male, realize that the fluid circuit self-locking connects fast.This product still prolongs has used the manufacture cost height, complicated steel ball is installed is come the male locking, and the operation of connecting, disconnecting is cumbersome.
Summary of the invention
The objective of the invention is to defective and deficiency at above-mentioned prior art, for people provide a kind of simple in structure, cost is low, the fluid quick joint of the easy to operate band button latch of connecting, disconnecting.
The present invention for the technical measures that solve its technical problem and take is: the fluid quick joint of this band button latch comprises the fittings body that links to each other with the feed liquor pipeline, with fittings body by socket that is threaded and the plug body that has central through bore that cooperates with socket, described socket internal fixation is equipped with the guide pin bushing of band endoporus, be movably installed with non-return valve core between guide pin bushing and the fittings body, described plug body comprises forward sealing portion, the nut that middle guiding tight lock part and rear end link to each other with the fluid pipeline, its forward sealing portion stretches into the endoporus of guide pin bushing and offsets with non-return valve core, outer wall of guiding tight lock part offers locking slot in the middle of it, described socket radially is equipped with button latch, between described button latch and the socket inwall button spring is installed, button latch laterally offers the through hole that the sealed department that supplies plug body and the tight lock part that leads pass through, the bottom of this through hole is provided with the dead bolt that is complementary with locking slot, described non-return valve core comprises valve core case and is positioned at the valve core head that center on the valve core case has counterbore and the uniform runner of perisporium hole, joint at valve core case and valve core head is provided with groove, the 3rd seal ring is installed in this groove, between the inwall of the perisporium of valve core case and socket, be provided with arcuate flow path, between valve core case and fittings body pressure spring is installed, described valve core head can movable be interspersed in the endoporus of described guide pin bushing.
The locking slot front side of described plug body is a vertical surface, and rear side is the conical surface of inclination angle scope 30 to 60 degree, and the dead bolt front side of described button latch is the conical surface of inclination angle scope 30 to 60 degree, and rear side is a vertical surface.
The front end positioning part of described guide pin bushing and the via bottoms of button latch offset.
The present invention can be installed in the pipeline of various fluids, reaches the purpose that pipeline is switched on or switched off fast.When pipeline need connect, plug body is pushed in the socket, the plug body forward sealing portion is inserted in the guide pin bushing endoporus seal ring non-return valve core pushed open pipeline is connected, simultaneously the button latch pinning plug body of having an effect on the socket.Only need click the button latch on the socket when pipeline need disconnect, plug body promptly ejects from socket automatically, simultaneously under the thrust of pressure spring, the 3rd seal ring on the non-return valve core is pressed on the conical surface of guide pin bushing, sealed the runner hole, pipeline disconnects, and guarantees that fluid can not leak.Advantage simple in structure, aesthetic in appearance, that volume is little, cost is low, easy to operate that this invention has can be widely used in oil, chemical industry, metallurgy, water power, engineering machinery, boats and ships, fields such as electromechanical equipment.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of button latch of the present invention.
Fig. 3 is the cross-sectional schematic of button latch of the present invention.
Fig. 4 is that the A of Fig. 3 is to view.
Fig. 5 is the structural representation of non-return valve core of the present invention.
Fig. 6 is that the B of Fig. 5 is to view.
Fig. 7 is a pipeline of the present invention structural representation when disconnecting.
Reference character: 1-fittings body, 2-socket, 3-pressure spring, 4-non-return valve core, the 4a-valve core case, 4b-valve core head, 4c-runner hole, 4d-arcuate flow path, the 5-check ring, 6-the-seal ring, 7-guide pin bushing, 7a-positioning part, 8-second seal ring, 9-button latch, 9a-through hole, 9b-dead bolt, the 9c-spring holder, 10-plug body, 10a-sealed department, the 10b-tight lock part that leads, the 10c-locking slot, 11-button spring, 12-the 3rd seal ring, 13-the 4th seal ring.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the fluid quick joint of band button latch of the present invention comprises the fittings body 1 that links to each other with the feed liquor pipeline, the socket 2 that links to each other with fittings body 1 by screw thread and the plug body that has central through bore 10 that cooperates with socket 2.The thread root of described fittings body 1 is provided with the 4th seal ring 13, prevents that fluid from leaking from the joint of fittings body 1 and socket 2.Described plug body 10 comprises the nut that forward sealing portion 10a, middle part guiding tight lock part 10b and rear end link to each other with the fluid pipeline, and its sealed department 10a and guiding tight lock part 10b can stretch in the socket 2.The external diameter of described guiding tight lock part 10b offers locking slot 10c greater than sealed department 10a on the outer wall of guiding tight lock part 10b, this locking slot 10c is processed into vertical surface in the front side, and the conical surface of 30 to 60 degree is processed in its rear end.Joint at guiding tight lock part 10b and sealed department 10a is provided with the conical surface, and the range of tilt angles of its conical surface is 30 to 60 degree.
Described socket 2 radially is equipped with button latch 9, between this button latch 9 and socket 2 inwalls button spring 11 is installed, be shifted during for fear of length of spring compressed, be provided with spring holder 9c in the bottom of button latch 9, corresponding position at socket 2 inwalls is offered the spring containing groove, one end of button spring 11 is set among the spring holder 9c, and the other end then places in the spring containing groove.Described button latch 9 laterally offers the through hole 9a that can pass through for the sealed department 10a of plug body 10 and guiding tight lock part 10b, the bottom of through hole 9a be provided with plug body 10 on the dead bolt 9b that is complementary of locking slot 10c.The front side of this dead bolt 9b is the conical surface of inclination angle scope 30 to 60 degree, and the guiding tight lock part 10b that the conical surface setting of dead bolt 9b can convenient plug body 10 enters the through hole 9a of button latch 9.The rear side of described dead bolt 9b and through hole 9a bottom vertical, when dead bolt 9b is embedded into locking slot 10c, the vertical surface of dead bolt 9b leans on mutually with the vertical surface of locking slot 10c, can not deviate to guarantee plug body 10.
In the described socket 2 guide pin bushing 7 is installed, this guide pin bushing 7 axially offer endoporus, the rear end of this endoporus is the little conical surface of outer imperial palace.Described plug body 10 forward sealing portion 10a can be interspersed in the endoporus of guide pin bushing 7.These guide pin bushing 7 front ends have the step in a seam and the socket 2 to lean on mutually, and the bottom of the through hole 9a of its front end positioning part 7a and button latch 9 offsets, and button latch 9 can not deviate from from socket 2.Described socket 2 offers restraining groove on the inwall of guide pin bushing 7 rear ends, check ring 5 is installed in restraining groove, and this check ring 5 can be fixed on guide pin bushing 7 in the socket 2.Described guide pin bushing 7 outer walls are provided with groove, in establish first seal ring 6, prevent that fluid from overflowing between socket 2 and guide pin bushing 7.Described guide pin bushing 7 inner hole walls also are provided with groove, in establish second seal ring 8, the sealing when stretching into guide pin bushing 7 endoporus with the sealed department 10a that guarantees plug body 10.Between described guide pin bushing 7 and the fittings body 1 non-return valve core 4 is installed.
As Fig. 5, shown in Figure 6, described non-return valve core 4 comprises valve core case 4a and valve core head 4b, and this valve core head 4b center has counterbore, and the uniform runner hole 4c of perisporium.Between safety check core print seat 4a and valve core head 4b, be provided with a groove, the 3rd seal ring 12 is installed in it.The perisporium of described valve core case 4a passes through for fluid by forming arcuate channel 4d between cutting and socket 2 inwalls.The present invention mainly adopts 3 arcuate flow path 4d to be distributed on the perisporium of valve core case 4a, and it is bigger to make fluid pass through the flow of valve core case 4a, and can not influence the stationarity that non-return valve core 4 moves forward and backward.Be provided with pressure spring 3 between the valve core case 4a of described non-return valve core 4 and the fittings body 1, the time be not shifted in compression in order to make pressure spring 3, offer in valve core case 4a bottom can ccontaining pressure spring 3 round counterbore.The movable endoporus that is interspersed in described guide pin bushing 7 of the valve core head 4b of described non-return valve core 4, and offset with the sealed department 10a end of stretching into the plug body 10 in guide pin bushing 7 endoporus.When the valve core head 4b of non-return valve core 4 is ejected the endoporus of guide pin bushing 7 by the sealed department 10a of plug body 10, fluid can flow into from the runner hole 4c of the valve core head 4b sidewall of non-return valve core, flowed out by valve core head 4b front end, the through hole of process plug body 10 is to fluid pipeline, pipeline connection again.
As shown in Figure 7, when plug body 10 is left socket 2, because under the effect of pressure spring 3 restoring forces, described non-return valve core 4 moves to guide pin bushing 7, the valve core head 4b of non-return valve core 4 stretches in the endoporus of guide pin bushing 7, the conical surface that is positioned at the 3rd seal ring 12 and guide pin bushing 7 endoporus rear ends on the non-return valve core 4 fits tightly, and stoped fluid to flow out by the runner hole 4c of non-return valve core 4, and pipeline disconnects.
During installation, the first step, earlier an end of button spring 11 is set on the spring holder of button latch 9 bottoms, again button latch 9 and button spring 11 is put into together the radial hole of socket 2, the other end of button spring is placed in the spring containing groove of socket 2 inwalls.Second step, first seal ring 6 and second seal ring 8 are installed on respectively in the groove of the outer wall of guide pin bushing 7 and inwall, and guide pin bushing 7 filled in the socket 2, press the button lock again, step in guide pin bushing 7 front end seams and the socket 2 is leaned on mutually, the front end positioning part 7a of guide pin bushing 7 stretches among the through hole 9a of button latch 9, and the vertical surface of dead bolt 9b of guaranteeing button latch 9 is relative with guide pin bushing 7, decontrol button latch 9 then, the front end positioning part 7a of guide pin bushing 7 and the bottom of through hole 9a are offseted, afterwards check ring 5 is embedded the restraining groove that socket 2 inwalls are arranged in guide pin bushing 7 rear ends, guide pin bushing 7 is fixing.The 3rd step was installed to the 3rd seal ring 12 on the non-return valve core 4, and the valve core head 4b of non-return valve core 4 is relative with guide pin bushing 7, and non-return valve core 4 is positioned over guide pin bushing 7 rear sides, pressure spring 3 was positioned in the counterbore of non-return valve core 4 valve core case 4a again.The 4th step was installed to the thread root of fittings body 1 with the 4th seal ring 13, then fittings body 1 was positioned over pressure spring 3 rear sides, and with socket 2 by being threaded.At last, fittings body 1 and feed liquor pipeline are connected, plug body 10 and fluid pipeline are connected, just finished installation.
When pipeline need connect, the sealed department 10a and the guiding tight lock part 10b of plug body 10 are pushed in the socket 2, slide into the dead bolt 9b place of button latch 9 as the locking slot 10c of plug body 10, button latch 9 resets, dead bolt 9b is embedded among the locking slot 10c, the vertical surface of dead bolt 9b leans on mutually with the vertical surface of plug body 10 locking slots, and plug body 10 can't be withdrawed from from socket 2.Meanwhile, the sealed department 10a of plug body 10 front ends promotes non-return valve core 4, make the valve core head 4b of non-return valve core 4 withdraw from guide pin bushing 7, this moment, the runner hole 4c of the valve core head 4b sidewall that fluid can be by non-return valve core 4 flow into the through hole of the plug body 10 that offsets with non-return valve core 4, and pipeline is connected.
When pipeline need disconnect, only need click the button latch 9 on the socket 2, owing to removed the locking of dead bolt 9b to plug body 10 locking slot 10c, under the 3 restoring force effects of the pressure spring between non-return valve core 4 and the fittings body 1, the valve core head 4b of non-return valve core 4 stretches in the guide pin bushing 7, makes runner hole 4c sealing, and with outside the plug body 10 release sockets 2, pipeline is disconnected, and the 3rd seal ring 12 on the non-return valve core 4 embeds the conical surface of guide pin bushing 7 endoporus, can guarantee that pipeline disconnects the back fluid and can not leak.